Device for electrodes replacement ensuring improved safety

FIELD: machine building.

SUBSTANCE: invention relates to the device for electrode replacement in welding device electrode holder. The device has container for spent electrodes with hole, on which an assembly is installed containing throughput channel (7) with longitudinal axis (X), the channel connects with the container the socket (46) holding the electrode holder end ensuring the mandrel. This axis (X) is approximately vertical. Device also contains equipment (46) for the electrode holder mandrel tightening or loosing, equipment (54) for electrode securing in the specified device, and equipment (28) for the spent electrode discharge in the container enabling or disabling.

EFFECT: device simplifies new electrode installation instead of the spent electrode, and reduces time for electrode replacement.

25 cl, 18 dwg

 

The technical field to which the invention relates

The invention relates to a changer electrodes, and more particularly, to a device intended for installation of the electrode in the device and removal of the electrode from the device intended for the manufacture of nuclear fuel rods.

The level of technology

The fuel rod contains the shell, inside which is placed a tablet of nuclear fuel, and the plug for closing the shell.

The plug is then welded to the first welding device along the entire periphery. The cap has an opening through which the fuel rod is filled with a gas. The hole was then covered with another welding device, called the sealing of the welding device.

Each of these welding devices contains the electrode intended for welding. This electrode is exposed to wear and must be replaced. This substitution in this case is carried out manually by an operator.

One end of the electrode is inserted into the electrode holder and the other end is used for welding.

When the operator wants to replace the electrode, he takes his fingers over the loose end and pulling for him to pull out of the electrode holder. When the operator wants to install a new electrode, he takes it for welding end and inserts the other end into the electrode�holder.

Moreover, these devices are located in the glove chambers, isolating the fuel rods from the operator. The operator can perform the actions with welding devices only through gloves attached to the wall of the glove box. Therefore, these actions are difficult.

Should be guaranteed the integrity of the insulation, and, therefore, it is necessary to avoid tearing gloves. However, the ends of the electrodes used for welding are very sharp. Therefore, the operator can tear your gloves when replacing the electrode.

It should be recalled that the inner space of the glove box can be radioactive, and this gap can lead to contamination of the operator and the environment.

Disclosure of the invention

Therefore, one of the objectives of the invention is to provide a device, intended for replacement of the electrodes and providing additional security, and more specifically, protecting against the risk of rupture of the electrode.

The above mentioned problem is solved by using the device for replacement of the electrodes containing the container for the used electrodes, means for separating the electrode from the electrode holder or attach it to the electrode holder, the means of fixing it in the replacement device, then used the electrode under the action of gravity falls in the container, while lying� replacement electrode holder is in the upright position.

This device can in this case to rule out any operations manually used with the electrode and to reduce the steps manually with the new electrode.

When using the device in accordance with the present invention the operator need only insert the mild end of the new electrode in the device, and the remaining steps do not require any direct contact with the electrode.

Preferably, the device could be used to install a new electrode directly to the right place.

The object of the invention is a device intended for removal of the electrode from the electrode holder and/or installation of the electrode in the electrode holder, and the said electrode holder is a part of the welding device, wherein said device includes a container for the used electrodes made with hole in it, and on the specified hole installed node, wherein said node includes a through channel, a longitudinal axis which connects the slot designed to hold one end of the electrode holder forming mandrel and the container, wherein said longitudinal axis is made essentially vertically, means for tightening or loosening of the mandrel of the electrode holder, the fastening means elektroda the specified device, and a vehicle for delivering or blocking of the discharge electrode used in the container.

For example, the fixture comprises a housing and a means of tightening or loosening of the mandrel of the electrode holder, a means of fixing the electrode in the specified device and a support mounted on the opening of the container, which contains a means of execution or blocking of the discharge electrode used in the container.

For example, a means of tightening or loosening of the mandrel of the electrode holder is formed by a recess in the named case and corresponding to the shape of the nut tightening/loosening. The recess may be formed either directly to the side walls of the housing, or for an additional insert on the bottom of the hull.

The means of fixing the electrode in the specified device may contain two elements that are free to move around two axes, and have completed two ends contacting with the electrode to clamp it. For example, two movable elements that lie in the plane containing the longitudinal axis or in a plane perpendicular to the longitudinal axis. Preferably executes a return vehicle designed to return two of the movable element in a position in which they are separated from each other to secure the electrode in the specified device.

A vehicle for delivering or blocking of the discharge electrode used in the containers�R may preferably contain, for example, the flap overlying a longitudinal channel in which there is a hole, which in the initial position is not aligned with said channel, and which could be combined with it by moving the damper. The dampers can be installed so that it can freely move in the support along an axis perpendicular to the longitudinal axis. Preferably, is a vehicle designed to return the cover in a position which overlaps with the channel.

For example, the damper includes a plate made with the specified hole, and a control terminal, connected to the outside of the support.

Device for removal of the electrode from the electrode holder and/or installation of the electrode in the electrode holder preferably includes means for regulating the distance between the flap and the body of the said mandrel device. For example, the fixture is mounted on a support by means of at least two threaded rods, the adjustment means is formed from a nut and/or locknut screwed on the threaded rods.

The device may also contain a support electrode holder, the electrode holder on the end holding the electrode has a tapered portion, and the specified bearing Keeper plate has a tapering body corresponding to the shape of the tapered portion of the electrode holder, and forms in�rikaline lengthening the body of the electrode holder. Bearing the electrode holder, for example, can be attached to the specified device in the axial direction and can rotate freely relative to it around its longitudinal axis.

For example, the support electrode holder includes an annular rack opposite the end through which is inserted the electrode holder, wherein said strut is inserted into the body of the specified fixtures. Bearing Keeper plate may include an internal thread intended to interact with the threads on the electrode holder, wherein said thread is located on the upper side of the narrowing of the body.

The device may in this case contain a means of holding the electrode holder mounts on the axle, made in the form of legs attached to the fixture.

Another object of this invention is a method of removing the electrode from the electrode holder through the device, made in accordance with this invention, containing the following steps:

- insert the electrode holder into the slot, part of a tightening of the mandrel penetrates the means of tightening/loosening, and the free end of the electrode comes in contact with a damper,

electrode holder is rotated for loosening,

- fix the electrode in the given device

- remove the electrode holder,

- disconnect the e�ectrum from said device,

- open the channel leading into the container, and the electrode under the action of gravity falls in the specified container.

To loosen, you can rotate the specified bearing capacity of the electrode holder, and the rotation is transmitted to the electrode holder.

When the electrode holder is inserted into the socket, the electrode holder is preferably bolted to the support of the electrode holder.

Another object of this invention is a method of installing the electrode in the electrode holder with the use of devices made in accordance with this invention, containing the following steps:

- the electrode is placed in the channel, with the sharp end of the electrode comes in contact with a damper,

electrode holder without the electrode is placed in the slot, wherein the end of the electrode protrudes from the device and penetrates the mandrel,

- rotate the mandrel to tighten, locking the electrode in the mandrel,

- remove the electrode holder, equipped with an electrode.

To tighten, you can rotate the specified bearing capacity of the electrode holder, and the rotation is transmitted to the electrode holder.

Preferably, the electrode holder was screwed into the support of the electrode holder before or during the insertion of the electrode holder into the slot, and to the electrode holder was removed from the supports of the electrode holder before or during removal of the electrode holder.

Brief OPIE�C drawings

The invention will be more clear after reading the following description and drawings.

Fig.1A shows a first variant implementation of the device electrode replacement, front view;

Fig.1B shows in detail a part of Fig.1A;

Fig.2 shows the upper part of the apparatus shown in Fig.1A, a view in longitudinal section;

Fig.3 shows the device shown in Fig.1A, a top view with partial cross-section;

Fig.4A shows a separate part of the device shown in Fig.1A, forming a support, a perspective view;

Fig.4B shows the top view of Fig.4A;

Fig.5 shows the damper, which is inserted into a support, shown in Fig.4A, a top view;

Fig.6A shows a separate part of the fixture device shown in Fig.1A, a perspective view;

Fig.6B shows a portion of Fig.6A, a sectional view along the plane a-A;

Fig.7 shows a separate part forming a clamp fixture, perspective view;

Fig.8 shows an electrode holder, equipped with an electrode, to which very well fits the device depicted in Fig.1A, a perspective view;

Fig.9A shows a second variant implementation of the device electrode replacement, side view;

Fig.9B shows the upper part of the apparatus shown in Fig.9A, a view in longitudinal section;

on figs shows the upper part of the device shown in Fig.9A, a perspective view;

Fig.10 shows a separate part of the device shown in Fig.9A, forming a support electrode holder, perspective view;

Fig.11A shows a separate part of the device shown in Fig.11A, forming a support, a perspective view;

Fig.11B shows a top view of Fig.11A.

Fig.12 shows a valve that is inserted into a support, shown in Fig.11A, a top view;

Fig.13A shows one of the parts of the device in the device depicted in Fig.9A, a perspective view;

Fig.13C shows another part of the fixture attached to the part shown in Fig.13A top view;

Fig.13C shows a portion of Fig.13A is a sectional view along the plane b-b;

Fig.14 shows a separate part forming a clamp fixture, perspective view;

Fig.15 shows a separate part, designed to tighten and loosen the mandrel perspective view;

Fig.16A and 16B shows the device shown in Fig.9B, in the initial position, types in cross sections along two parallel planes C-C and D-D;

Fig.17A is the same as in Fig.16A, wherein the clamp is screwed in position on the electrode;

Fig.17B is the same as in Fig.16B, when the damper is in the open position;

Fig.18 shows the tool holder, sleep�by the electrode, which is very suitable for the device of Fig.9A, a perspective view.

The implementation of the invention

The described device is symmetrical about the longitudinal axis X. In Fig.1A and 1B shows a side view of the first example of a device D1 replacement of electrodes, is well adapted for replacement of electrodes used for welding plugs on the shell of the nuclear fuel rod.

Device D1 includes a container 2 for storing the used electrodes, a device 4 for replacement of electrodes, designed to remove the electrode from the electrode holder or the installation of the electrode in the electrode holder, and a support 6 devices for replacement of electrodes which is installed on the container 2, is removable and it also forms a cover for the container.

The device D1 has a longitudinal axis X and channel 7 for the electrode with the X axis, which passes through the fixture 4 and a support 6 and opens into the container 2.

Channel 7 can be seen in the sectional view of Fig.2.

For simplicity, in the remainder of the description of the device 4 for replacement of the electrodes will be referred to as "device 4".

Fig.8 shows an example of the electrode holder T welding device to which the machine is adapted for the D1.

The electrode holder 7' includes an elongated housing formed with about�the dressing on one end, which holds the electrode 11 is in its place; wherein the mandrel includes jam nut 13 that is used to secure the electrode 11.

The container 2 is a container whose top has a hole (not visible) surrounded by a collar (not visible). In the example shown, the container is inserted into the element 12, which holds the container in an upright position.

In the example shown, the supporting element 12 is made in the form of a frame of metal wire, which, first, generates a frame 12.1 for the container, and secondly, stand 12.2, designed to keep the container in a stable upright position.

Can be applied to any other support element, for example, molded from plastic, the use of which does not exceed the limits of the invention.

Preferably, the collar 10 has been completed with thread to secure the support 6 on the container.

However, there may be used any other means of fixation, for example, the connection snap or bayonet connection.

Support 6 devices, which is visible in Fig.2, 4A and 4B, comprises a housing 14 having a longitudinal axis X, is made with a through channel 16, also having a longitudinal axis X, through which the used electrode can enter the inside of the container 2.

The housing 14 also contains an end wall 18 at first�m side sent to the device 4, and an annular recess 20 with internal thread 22 on the second end face, which interacts with a thread formed on the neck of the container, resulting in the neck enters the recess 20.

The wall 18 includes an opening 24, which forms one end of the channel 16.

The housing 14 includes an intermediate portion 25 located between the end wall 18 and the recess 20, and a hole 24 which includes a valve 26 and moves freely in the housing 14 along the Y axis, perpendicular to the longitudinal axis X.

The damper 26 is moved along the surface of the wall 18 opposite the wall, directed towards the fixture 4.

Fig.5 depicts the example shown separately movable flaps 26, which contains the plate 28 and the control rod 30 fixed to one end of the plate 28.

The plate 28 is made with a through hole 32 having a diameter sufficient to pass through the electrode.

The intermediate portion 25 includes a side wall, is made with a lateral slot 34, in which the slide plate 28, and opposite transverse hole 35 along the Y axis, through which the control rod 30.

When the plate 28 moves along the Y axis under the action of a control rod 30, the hole 32 in the plate can be combined with a through hole 24 of the end wall 18, �that allows the electrode to pass through the support 6 and fall into the container 2.

Plate 28 is normally in the closed position. Preferably, it was found elastic return means designed to return the plate 28 in a position in which a through hole 24 is closed.

The example shown includes a helical spring 35, mounted in a loaded condition between the outer surface of the intermediate portion 25 and the button 36 mounted on the free end of the control rod 30.

In the example shown, the through hole 32 of the plate 28 is located so that in order to align the opening in the plate with a through hole 24 in the end wall, to control rod 30 should be applied force in the direction of the axis X of the control bar.

Alternatively, the damper may be designed so that in order to align the openings 24 and 32, it is necessary to apply a force causing separation along the X axis, i.e. to the terminal 30 of a tension force is applied.

In the example shown, the plate preferably contains subtle side edges that limit the friction when the plate slides in the lateral groove 34.

In the example shown, the outer diameter of the intermediate portion 25 is smaller than the external diameter of the end in which a recess, is the reduction of the diameter is made so that it could fit the end of the control rod 30, which is equipped�th button 36. In this case, the transverse size is limited.

Reducing the diameter is such that it may be formed by an annular side surface 38, which protrude from two threaded rods 40 that are installed, the fixture 4.

Device 4, shown separately in Fig.6A and 6B, comprises a housing 42, is made with a through channel 44, through which the electrode and the axis of which coincides with the axis X. it also made the socket end of the electrode holder, so that the electrode can be removed from the electrode holder or attached to the electrode holder.

This channel contains the first section 46 on one longitudinal end of the channel 44.1, located opposite the support, and having a section that prevents rotation of the end of the electrode holder, and more specifically, the nut 13, which firmly holds the electrode in the electrode holder. The channel 44 includes a second section 48 having a smaller cross-section, and a third section 50 of smaller diameter, allowing the correct direction when the electrode is inserted into the fixture.

In the example shown, the slot 46 has an oblong cross-section, and the nut 13 has a hexagonal cross-section, the distance separating two parallel faces 46.1 from the wall of the oblong slot, is made approximately equal to the distance separating the two parallel faces of the nut 13.

Multifunc�consumption also includes means 52, designed for fixation of the electrode in the device. In the example shown, the tool 52 is formed by fixing clamp, driven by the operator.

The means 52 includes two parts 54, mounted in the housing 42 and having the opportunity to freely rotate around an axis 55 perpendicular to the axis X. a Separate part 54 shown in Fig.7. Two parts 54 are located opposite each other on opposite sides of the longitudinal axis X.

Each piece 54 is made with a ledge 56 facing to the X-axis, which is in contact with the electrode, wherein the electrode is sandwiched between the two protrusions 56.

Part 54 also contain two working end 58 located radially from the axis X, which the operator uses to move the parts around the axes 54 and 55.

The two tabs 56 to move the electrode in the space between the fixture 4 and a support 6 devices.

The housing 42 has two slots 57 that passes perpendicular to the X-axis and located on either side of the X axis, wherein each socket is part 54, as shown in Fig.2.

Also a vehicle designed to return the tabs of the clips in a split position and consisting of two springs 62 that are installed in stressed condition between the parts 54 and the Central part 64 of the housing 42. In the example shown, the springs 62 are installed in the holes 63, designed�built in edge parts 54.

Moreover, as already described, the fixture is mounted on two threaded rods. For this purpose, the housing 42 of the fixture 4 on each side of the X-axis contains two lateral protrusion 66, each of which is drilled hole 68, through which pass threaded rods.

Fixture position 4 relative to the support 6 in this case can be adjusted by blocks 70 nuts and locknuts.

Blocks 70 nuts and locknuts adjust the distance between the bottom of the first section 46, which passes through the tool body supporting the electrode holder, and the plate 28 of the flap 26.

This distance is equal to the length of the electrode holder acts as the electrode. To obtain a good weld this distance must be accurately recorded. Thus, this length is automatically recorded when the electrode is installed. The operator need not take any action to adjust the distance.

This device D1 replacement of electrodes suitable to replace the welding electrode for which the electrode holder shown in Fig.8, is relatively small.

Now we explain how to operate this device D1 replacement of the electrodes.

In order to remove the electrode, the operator detaches from the electrode holder of the welding device; during this stage it �sushestvam manipulation end of the electrode holder, the opposite end of which acts as an electrode.

During the next stage, it inserts the electrode holder to the fixture 4, first inserting the free end of the electrode into the channel in the fixture 4 to until the electrode holder will not stop, resting in the lower part of the first section 46 of the channel 7.

The electrode is supported on the upper surface of the plate 28 of the flap 26.

The operator then rotates the electrode holder in a direction to loosen the nut of the electrode holder, through the interaction of the nut and the recess of the first section 46 of the channel passing through the device 4.

Now the electrode is no longer secured in the electrode holder.

Then with one hand the operator presses the two parts 54 of the clamps to move them toward each other and clamp the electrode, which in this case is fixed in the fixture 4, and remove the electrode holder with the other hand.

The operator then releases the part 54, which under the action of springs 62 is moved away from the electrode.

The operator then presses the button 36 on the control rod 30 of the damper 26, which leads to the alignment of the holes 32, 24 passing through the plate 28 and the wall 18, so that the electrode falls into the container 2.

Using this invention, the operator can remove the electrode without having to touch the sharp end.

Use�bathing the electrode then can be discharged by tilting the container, from which were removed the prop and fixture.

To install a new electrode in place, the operator takes out a new electrode out of the box, taking him by the mild end. Note that this is the only end for which the operator can take.

He then inserts an electrode into the device sharp end first into the fixture 4, and then into the support 6, until it stops fixed to the upper surface of the plate 28 of the flap 26.

The operator then takes the electrode holder at the end opposite to that which will keep the electrode, and sets it on the end of the electrode protruding from the fixture 4, and this end is not sharp.

The electrode holder stops fixed in the lower part of the first section 46 of the channel 7 fixtures. If fixture position 4 relative to the support 6 has been correctly adjusted, the length of the electrode protruding from the electrode holder, is correct.

The operator then fixes the electrode in the electrode holder by tightening the nut; it rotates the electrode holder in the direction of rotation opposite to the direction of rotation, which has cleared the electrode and the nut is tightened by means of the socket fixture 4.

Then the operator removes the electrode holder, equipped with a new electrode. Electrode holder with a new electrode is ready �environment in place in the welding device.

Using this invention, the operator will never have to manipulate the sharp end of the electrode, which will be protected during all stages of removal and installation of electrode, and also at his disposal.

The only stage during which the sharp end of the electrode is visible, appears during removal of the electrode holder of the welding device and install the electrode holder with the new electrode into the welding device; during these stages, the operator does not need to perform actions with the device D1 replacement, so it can more carefully to manipulate the sharp end of the electrode.

Moreover, the actions are very simple, which is especially recommended in the case of works in the glove chamber.

Therefore, a risk that the glove will be torn by the sharp end, is very much reduced.

Accurate positioning of the electrode in the electrode holder also easily achieved.

The device D1 in the example shown is a portable, but the container can be inserted in a fixed place in the glove chamber.

The entire device may be made of a rigid material such as stainless steel or anodized aluminum. However, the damper plate is made of stainless steel to ensure that the new electrode will not get aluminum particles that can� to degrade your welding quality.

Fig.9A-9C shows another example of embodiment of the device D2 replacement electrodes well suited for replacement of electrodes sealed welding intended for welding the ends of the stub shafts.

However, as will be explained below, the device D2 may be adapted to replace the welding electrodes.

The device D1 may be adapted for replacement of electrodes sealed welding.

First will be described an example of a sealed electrode holder welding shown in Fig.18.

The electrode holder 74 is sealed welding comprises a housing 76 in which the mandrel 78, holds the electrode surrounded by a porcelain tapering part 80; the end of the mandrel protrudes from the tapered portion 80 and has a nut 82 that is used to tighten the electrode 11 in the housing 76.

In the shown electrode holder body 76 also includes threads 84 on the upper part of the tapered portion 80, which will be used to install the device in a sealed weld.

As the device D1 device D2 includes a container 86, a device 88 for replacement of electrodes and a support fixture 90, mounted on the container 86 and the holding device 88 for electrode replacement. Closing the channel 91 passes through the device in the longitudinal direction.

For simplicity, in ostavshys� portions of the fixture 88 to replace the electrodes will be referred to as a "fixture 88".

The device D2 also contains shown in Fig.10 support 92 of the electrode holder mounted on the fixture 88. Bearing 92 of the electrode holder can be manufactured, for example, from ertalon®.

Bearing 92 of the electrode holder has a shape similar to the shape of the truncation of a hollow cone, the inner profile of which corresponds to the outer profile of the tapered portion 80 of the electrode holder 74, wherein the cone 80 are made so as to be inserted into the support 92.

Bearing 92 of the electrode holder includes a hole 94 of large diameter, through which is inserted the electrode holder 74, and the hole 96 of small diameter, which is the end of the electrode holder and the sharp end of the electrode.

The hole 96 of small diameter is preferably surrounded by an annular rim 97, forming a support rack for supporting 92 of the electrode holder when the electrode holder is mounted on the fixture 88.

In the example shown by the holes 96 at the end of the leg 92 of the electrode holder preferably has openings so that the operator can see the electrode, when it is mounted in place.

As for the device D1, the container 86 is in the form of a vessel, whose top has a hole 98 is surrounded by a collar 100.

Support element 102 holding the container in an upright position can be performed the same way as for D1.

Preferably, the collar 100 has been executed with thread to secure the support 90 on the container 86. However, there may be used other means of fixation, for example, the connection snap or bayonet connection.

The design of the support 90 is very similar to the supports 6 devices D1.

A support fixture 90, which is visible in Fig.11A and 11B, includes a housing 104 having a longitudinal axis X, is made with a through channel 106, also having a longitudinal axis X, through which the used electrode can enter the interior of the container 86.

The housing 104 at the first longitudinal end has a end wall 108, which is aimed at device 88, and the second longitudinal end of the annular recess 110 surrounded by the inner thread cooperating with the thread, made the collar 100, whereby the collar 100 may enter the recess 110.

Wall 108 includes a hole 114, which forms one end of the channel 106.

The housing 104 includes an intermediate portion 115 located between the end wall 108 and recess 110, which is placed in the valve hole 116 114, which moves freely in the housing 104 along the Y axis, perpendicular to the longitudinal axis X. the Valve 116 is moved along the wall surface 108 is directed from the fixture 88.

Fig.12 shows an example shown separately can reduce the bubble sliding� 116, which contains the plate 118 and the control rod 120 is fixed to one end of the plate 118.

Plate 118 is made with a through hole 122 having a diameter sufficient to ensure that he passed through the electrode.

The intermediate part 115 includes a side wall made with side slit 124 which slide plate 118, and with opposite transverse hole 125 along the Y axis, through which control rod 120.

When the plate 118 moves along the Y axis under the action of a control rod 120, the hole 122 in the plate 118 can be combined with a through hole 114 in the end wall 108, so that the electrode can pass through the support 90.

Plate 118 is normally in the closed position (Fig.16B).

Preferably, it was found elastic return means designed to return the plate 118 to a position at which a through hole 114 is closed.

In the example shown, coil spring 124, is installed in stressed condition between the outer surface of the intermediate part 115 and the button 126 mounted on the free end of the control rod 120.

In the example shown, the through hole 122 of the plate 118 is located so that in order to combine it with a through hole 114 in the end wall (Fig.17B), to the Manager erased�Nude 120 should be applied force in the direction of the x axis.

Alternatively, the damper may be designed so that in order to align the holes 114 and 122, it is necessary to apply a force in the direction from the x axis.

In the example shown, the plate contains a thin side edges, designed to reduce friction when the plate is shifted in the lateral groove 124.

Valve, which control rod 120 is formed by extending the plate, is not beyond the scope of this invention.

In the example shown, the intermediate part 115 is preferably made with two faces 130, located on its lateral surface on each side of the axis X, parallel to each other, designed to prevent blockage in the part denoted by the reference position 136 and formed the basis of the fixture 88, and which can be seen in Fig.13A-13C.

Bearing 90 is also provided with two lateral protrusions 132 protruding from each side of the axis X in a plane perpendicular to the X-axis, wherein each protrusion has a hole 134 into which can be inserted in the fixture 88.

In the example shown, the fixture 88, shown separately in Fig.13A-13C, consists mainly of three parts: the first part 136, which forms the basis for securing the fixture to a support, the second portion 138 forming a guide for placement of the support 92 of the electrode holder, and plate 140 tightening�experiences-attenuation which interacts with a nut electrode holder.

The base 136 for fastening includes an annular connecting surface 137 of the guide portion 138 and two protrusions 140 protruding from each side of the x axis.

Each projection 140 is provided with holes 142 accommodating the threaded rods 144, each of which passes between the lip 132 of the support ledge and 140 bases 136 to secure the fixture 88.

Preferably, the holes in the two lugs 140 are in the form of the cut and not in the form of drilled holes, to make it easier to install the threaded rods 144.

In the example shown, the upper surface of the protrusions 140 and the connecting plate 137 are located in two different planes.

In the example shown, the connecting plate 137 includes a slit 141 is such that in the top view cross-section of the plate is C-shaped.

This incision 141 preferably accommodates a control rod 120 of the damper 116, so that there may be obtained a more compact device, as shown in Fig.13A.

The base 136 to secure also contains two drilled holes 143 located radially opposite each other, formed in the connection plate 137, and through which the axis about which it can freely rotate the parts for clamping the electrode, which will be described below.

Education�Lenno holes contain the first section 143.1 large diameter sections 143.2 smaller diameter, in sections 143.1 large diameter head is the axis, thus eliminating the need protrusion parts that could do the installation on a support 90 is difficult.

In the example shown, the diameter on which there are two drilled holes 143, not lying on one straight line with the axis passing between the two holes 142 so that you can control the clamping parts.

In the example shown, the threaded rods 144 on one end contain the head and 144.1 flange 144.2 located along their axis and perpendicular to their axis, while the distance separating the head from the flange is made so that one can insert protrusions 140.

The protrusions 140 136 fundamentals for secure fit between the head and 144.1 flange of each screw.

Nut 144.3 screwed on the threaded portion of each rod 144 and is located under the support ledge 90. The distance between the pad 90 and the fixture 88 can be adjusted by tightening or loosening nuts 144.3, which fix the length of the electrode protruding from the electrode holder.

The guide portion 138 (Fig.13B and 13C) has an approximately annular wall 145 around the X-axis, closed at the end of the front wall 146. The end wall 146 also contains in the center a through hole 148 along the X-axis, which can pass through the electrode.

At the end of a round on one line with about�Orlandini in the base 136 for fixing holes drilled holes 143 149.

Annular wall 145 and the end wall 146 define the boundaries of the slot 151 having a diameter approximately equal to the external diameter of the support stanchion 97 supports 92 of the electrode holder.

In the example shown, the end wall 146 includes a recess 150 from the opening 148 in which is fixed the plate 152 shown in Fig.15, equipped with a hole 153 having a shape corresponding to the shape of the nut electrode holder, where that nut is placed and will interact with him for tightening or loosening the nut.

This plate 152 is fixed, e.g. by screws at the bottom of the slot 151 so that it can be replaced, for example, if it is worn out, or if you want to use a device that has a nut with another form.

If you do not want to replace the plate, then it may be rigidly secured, for example by gluing or welding.

Preferably, the guide portion 138 contained means 154 that is designed to hold the supports 92 of the electrode holder in the axial position, while she could freely rotate around the x axis.

In the example shown, the means 154 are formed by three retaining clamps fixed on the upper face of the guide portion 138 and forming an axial retainer for the supports for the supports 92 of the electrode holder, preventing its displacement with when�of poseleniya 88.

In the example shown, the guide portion 138 includes three recesses 156, made at its upper edge and spaced from each other at an angle of 120°, each of which are mounted on the retaining plate 154. Plate 154 can be fastened with screws.

Device 88 also includes means 56 is designed for fixation of the electrode in the fixture 88. The locking means 56 forms a clamp comprising two tightening parts 158 pivotally mounted on the axis 160 that is parallel to the x axis.

In this embodiment, the implementation of the clamping elements move in a plane perpendicular to the axis X. In Fig.14 separately shows one of the parts 158. Fig.16A addictive part 158 are visible in the initial position, which corresponds to the extended position, and Fig.17A addictive parts are in contact with an electrode.

Addictive part 158 have the shape of approximately a quarter of the disk, in this case the area with the right angle 162 is intended to come into contact with the electrode.

Addictive parts contain a hole 164 through which passes the axis 160, approximately located in the angle formed between the rounded edge of the clamping portion 158 and a flat edge. The rounded edge also contains the protruding section 165, located in front of the hole so that the operator can operate the clamping parts. One horse� axis 160 is installed in the holes 143.1, 143.2 bases 136 to secure and the other end installed in the holes 149 of the guide part. Preferably, in the holes 149 was cut an internal thread, and the axis 160 were made of screws that screw into the holes 149, thereby fixing the guide portion on the base to secure it.

Preferably, the product installed 166, designed to return the clamping parts in extended position, for example, it may be spring 166 mounted in a loaded condition between the guide part and clamping parts, the springs 166 are installed in the holes 168, performed at the sending side.

Form a quarter of the disc makes possible the inclusion of the clamping parts in a fixture that has a circular cross section, remain exposed only two working station.

This makes the device more compact.

As well as the device D1, the device D2 may be made of hard material, such as stainless steel or anodized aluminum.

However, the plate 118 of the damper 116 is made of stainless steel to ensure that the new electrode will not get aluminum particles that can degrade your welding quality.

Then follows the explanation of the operation of the device D2 replacement of the electrodes.

The electrode holder removes'm sealing�his welding device and is screwed into a support 92 of the electrode holder.

In the case where the bearing 92 of the electrode holder is not attached to the fixture 88, the operator preferably establishes a support 92 of the electrode holder into place on the fixture 88 by setting the support leg 97 in place in the slot 151 of the guide portion 138, and the operator then screwed into the electrode holder to a support 92 of the electrode holder to reduce the risk of pitting corrosion.

Nut electrode holder is installed in the hole 153 of the plate 154, and then the electrode holder is screwed into a support 92 of the electrode holder.

The operator stops tightening when the nut stops fixed in the end wall 146 of the guide portion 138.

The operator separates the electrode from the electrode holder by loosening the nut, and in order to do this, he rotates the support 92 of the electrode holder around the X axis, which rotates the electrode holder around the axis X. since the nut is held from rotation while inside plate 154, it is weakened.

Recall that the axle 92 of the electrode holder can rotate freely around the x-axis.

Then the electrode is released from the electrode holder.

If bearing 92 of the electrode holder contains no thread cooperating with the thread of the electrode holder, the operator applies the electrode holder axial force in the direction to a support 92, whilst rotation

The interaction between the conical shapes usually leads to the fact that the axle 92 of the electrode holder and the electrode holder are blocked in the rotation, and attached to a support 92 of the electrode holder debilitating rotation is transmitted to the electrode holder.

The operator applies a force to the clamping portions 158 to capture the electrode 11 and to keep it in the fixture, and at the same time he removes the electrode holder (Fig.17A).

Next, the operator ceases to act on the clamping portion 158, which then under the action of springs 166 are moving away from the electrode 11, freeing it, and by pressing the button of the control rod 120 moves the valve 116 to line up the holes 122, 114, valve 116, and a support 90, and when the combination is reached, the electrode 11 under the action of gravity falls into the container 86 (Fig.17V).

The operator sets a new electrode 11 into place, taking a new electrode for mild end, sets him in his place the sharp end in the fixture, while the pointed end is in contact with the top face of the plate 118 of the damper 116.

The operator then sets the electrode holder to the fixture 88 by inserting the mild end of the electrode in the electrode holder.

The electrode holder is then screwed into the support 92 of the electrode holder.

The operator then rotates the support 92 of the electrode holder in the direction of tightening the nut electro�the obsessed one, and then, the electrode 11 is fixed in the electrode holder.

Then, the electrode holder vylinivaya out of the socket 92 of the electrode holder and removed from the support 92 of the electrode holder, and is set back in place in the sealing of the welding device.

In the example shown bearing 92 of the electrode holder is attached to the fixture 88 in the axial direction, but you can run it independent, then it would separately davincibles on the electrode holder, and formed thus the node would be established by the fixture.

The main difference between the devices D1 and D2, except for the presence of a support 92 of the electrode holder, is the orientation of the clamping parts of the locking means of the electrode device, in which the device D2 is movable in a horizontal plane, while in the device D1 they are mobile in a vertical plane.

The device D2 can be very simply adapted to the welding electrode holder, for example, by changing the shape of the housing of the guide part so as to receive the housing corresponding to the shape of the nut welding electrode holder.

Devices D1 and D2 contain a portable container used for the electrodes, it is possible to install this container at the workplace in the glove chamber, with access to it elsewhere, and �to pustoaica, for example, it could automatically, further reducing the risk of exposure.

The device for replacement of the electrodes in accordance with the invention protects the operator during all phases of removal and installation of the electrode, thus, a risk that gloves can be torn, significantly reduced. Moreover, manipulation of electrodes used are made only through the container, which, moreover, is closed before you take out the glove box.

The operator is in contact only with new electrodes and only those parts that are not sharp.

The device for replacement of the electrodes in accordance with this invention also have the advantage that they are very reliable. The functioning process is completely mechanical and does not require any complex design. Moreover, they are very compact, thanks to their vertical configuration.

The fixture 88 device D2 has a very low height due to the horizontal orientation of the clamping parts, which compensates for the height 92 of the electrode holder.

Implementation of the device D1 with clamping parts, oriented horizontally, as in the device D2, preferably can give a relatively low height.

The damper may be actuated automatically, for example, by a pneumatic control�management.

1. The device for replacement of the electrode in the electrode holder of the welding device comprising a container (2, 86) used for electrodes made with hole in it, a device (4, 88) to replace the electrode, comprising a housing (42), which is executed on a single vertical axis (X) of the slot (46) for retaining the end of the electrode holder in the form of the mandrel and coupled with the socket (46) through channel (7, 91) for electrode connected with the opening of the container (2, 86), the tool for tightening or loosening of the mandrel of the electrode holder and the means for fixing the electrode, and a support (6, 90) with a means to reset or lock discharge electrode used in the container mounted on the hole of the container (2, 86).

2. The device according to claim 1, wherein the means for tightening or loosening of the mandrel of the electrode holder is made in the form of a recess formed in the specified slot (46) and the appropriate form of the nut tightening/loosening of the mandrel of the electrode holder.

3. The device according to claim 2, wherein the recess is formed directly in the side walls of the socket (46).

4. The device according to claim 2, wherein the recess formed in the plate (140) mounted at the bottom of the socket(46).

5. The device according to claim 1, wherein the means for fixing the electrode contains two elements (54, 158) mounted in the housing (42) is movable in�range of axles and provided with two ends, intended to enter into contact with the electrode for his capture.

6. The device according to claim 5, in which two of the movable element (54) lie in the plane of the vertical axis (X).

7. The device according to claim 5, in which two of the movable element (158) lie in a plane perpendicular to the vertical axis (X).

8. The device according to claim 5, containing a means to return two mobile elements (54, 158) in the position in which they are spaced from each other to secure the electrode in the specified device.

9. The device according to claim 1, in which the tool is executing or blocking the discharge electrode used in the container (2, 86) comprises a flap (26, 116), overlying a longitudinal channel (7, 91), wherein the damper is formed by the hole (32, 122), which in the rest position is not aligned with said channel (7, 91) and which can be combined with it by moving the flaps (26, 116).

10. The device according to claim 9, in which the flap (26, 116) are mounted for free sliding in the bearings (6, 90) along the axis (Y) perpendicular to the longitudinal axis (X).

11. The device according to claim 9, containing a means for returning the flaps (26, 116) in a position in which the channel (7, 91) is blocked.

12. The device according to claim 9, in which the flap (26, 116) is made in the form of a plate (28, 118) formed in it the specified hole (32, 122) and provided with a control rod (30, 120), R�polozhennym outside support (6, 90).

13. The device according to claim 9, containing means for regulating the distance between the flap and a slot of the specified mandrel of the device.

14. The device according to claim 13, wherein the housing (42) fit for replacement of the electrode is mounted on a support (6, 90) by means of at least two threaded rods, a means of adjustment are formed in the form of a nut and jam nut, or nuts, or nut, is screwed on the threaded rods.

15. The device according to claim 1, which further comprises a support (92) of the electrode holder, and the specified bearing (92) of the electrode holder has a tapered socket, the second end shape of the electrode holder, and forms a continuation of the inlet socket of the electrode holder.

16. The device according to claim 1, which further comprises a support (92) of the electrode holder, and the specified bearing (92) of the electrode holder has a tapered socket, the second end shape of the electrode holder, and forms a continuation of the inlet socket of the electrode holder, bearing (92) of the electrode holder are rigidly connected with the specified device (88) in the axial direction and can rotate freely relative to it around its longitudinal axis.

17. The device according to claim 16, in which the bearing (92) of the electrode holder includes an annular rack (97) located opposite the end through which comes the electrode holder, the decree�Naya hour (97) is installed in socket (151) of the specified device (88) for replacement of the electrode.

18. The device according to claim 15, in which the bearing (92) of the electrode holder contains an internal thread, made with possibility of interaction with the threads on the electrode holder, wherein said thread is made on the upper part of the tapering of the slot.

19. The device according to claim 15, which includes means for retaining a support (92) of the electrode holder along the axis, made in the form of pads (154) attached to the fixture (88) to replace the electrode.

20. Method of replacement of the electrode in the electrode holder of the welding device by removing it from a device according to one of claims. 1-19, comprising stages on which:
- insert the electrode holder into the slot (46), providing a set of element tightening the mandrel of the electrode holder into the tool, tightening/loosening of the fixture to replace the input electrode and the free end of the electrode in contact with the flap (26, 116),
electrode holder is rotated to loosen the nut electrode holder,
- fixed electrode (11) in a specified device
- remove the electrode holder,
- disconnect the electrode (11) of said device,
- open the through-passage (7, 91) for electrode connected with the opening of the container (2, 86) for providing drop electrode (11) under the action of gravity in the specified container (2, 86).

21. A method according to claim 20, in which for reducing the tightening torque�t prop (92) of the electrode holder with the transmission of the rotation of the electrode holder.

22. A method according to claim 20 in which the electrode holder is screwed into the support (92) of the electrode holder when installed in the slot (46).

23. Method of replacement of the electrode in the electrode holder of the welding device by setting it using the device according to one of claims. 1-19, comprising stages on which:
- set electrode (11) in the channel (7) and enter the sharp end of the electrode in contact with a damper,
- place the electrode holder without electrode into the socket and ensure that the call of the speaker from the device end of the electrode in the electrode holder mandrel,
- rotate the mandrel of the electrode holder to tighten, locking in the electrode (11),
- remove the electrode holder, equipped with an electrode (11).

24. A method according to claim 23, which rotate to tighten the support (92) of the electrode holder with the transmission of the rotation of the electrode holder.

25. A method according to claim 24 in which the electrode holder is screwed into the support (92) of the electrode holder before or during the insertion of the electrode holder into the slot or removed from the electrode holder support (92) of the electrode holder before or during removal of the electrode holder.



 

Same patents:

FIELD: process engineering.

SUBSTANCE: invention relates to electrode replacement device in welding system. This device comprises first part (12) to house the electrode holder (2). Said first part (12) comprises tool electrode holder retainer Second part (14) is arranged around said first part (12) to cover electrode part (8) extending from said first part (12). Second part (14) can be detached from first part (12) at sliding along electrode and revolve relative to fixed part (14) at surrounding it. Second part (14) comprises clamping or releasing means of mandrel (6), and electrode and second part retainer (36) to withdraw it from mandrel (6) when first part (12) and second part (14) are separated.

EFFECT: perfected design.

21 cl, 6 dwg

FIELD: process engineering.

SUBSTANCE: invention relates to welding. Proposed system (34) comprises heating inductor (36) arranged nearby welding torch or plasma cutter unit (16). Power supply induction source (38) of heating system (34) is configured to generate AC. Step-down transformer (42) is connected with said source (38). Inductor (36) is connected with step-down transformer (42) to receive AC and to induce eddy currents in part (32) to be welded for its heating ahead of moving welding arc or plasma cutter to homology temperature making at least 0.5. Said homology temperature is the relationship between material actual temperature and material fusion point, both being expressed in absolute units of temperature.

EFFECT: higher welding rate, increased penetration and higher mechanical properties and quality.

18 cl, 6 dwg

FIELD: process engineering.

SUBSTANCE: invention relates to welding. Wire carcass 26 is locked by wire inlet nozzle 27 in butting device 29. Wire inlet nozzle 27 is connected by fastening device 31 to butting device 29, said fastening device being composed of cylinder with at least one spline 36 to make at least two moving jaws 37. Fastening device 31 is arranged at the end opposite the wire inlet element 32 with oval jumper, higher than cylindrical zone.

EFFECT: reliable locking of carcass in welding device.

8 cl, 9 dwg

FIELD: process engineering.

SUBSTANCE: invention relates to welding equipment, particularly to current feed nozzle for welding to narrow cut at welding of 300-500 mm thick vessels operated at pressure, etc. Current feed nozzle comprises flat casing with welding wire feed channels and those for pendulum tip cylindrical rod and flexible lead-in. Said tip is articulated with said casing and consists of fixed pendulum contact plate and movable contact plate. Symmetric rectangular slots with semi-cylinder grooves are made at lateral surfaces of the casing and pendulum fixed contact plate mating surface. Flexible lead-in consists of several twisted conducting wires fitted in said semi-cylinder grooves and locked by pressure plates having appropriate semi-cylinder grooves tightened by threaded elements.

EFFECT: longer life, higher quality of welding.

7 cl, 4 dwg

FIELD: process engineering.

SUBSTANCE: invention relates to welding wire feed mechanism casing 10 and casing separator 40. Casing 10 comprises front and rear sides, top and bottom, opposed side holes spaced apart by casing width to receive side panel and separator 40 arranged, preferably between front and rear sides, top and bottom to extend through the center of casing width to divide the casing inner volume into working side 20 and user's side. Separator 40 is composed by the panel with one or several reinforcing elements 60 extending vertically outward from the panel side surface in immediate proximity to spindle mounting position. Said separator is made integral with one or several reinforcing elements.

EFFECT: perfected design.

26 cl, 12 dwg

FIELD: process engineering.

SUBSTANCE: invention relates to control over welding set 1 and to welding set. Proposed welding set comprises electrochemical storage 2, torch 7 for arcing 6 connected with device 4 of control over I/O device 5 for adjustment of welding current and power section for conversion of electrochemical storage power. Said control device 4 computes estimated magnitude of residuary welding time for arcing 6 depending of the capacity of said electrochemical storage 2 and steady-state welding current. Besides it comprises display 27 to indicate computed residuary welding time.

EFFECT: control device 4 corrects residuary welding time proceeding from actual welding current magnitudes.

13 cl, 5 dwg

FIELD: process engineering.

SUBSTANCE: invention relates to device 27 for protection of welding set housing element 26. Proposed device 27 is composed of plate 28. Outer side 29 of plate 28 has ledges 30. Note here that plate 28 is secured to housing 26 so that said outer side 29 interacts with the surface over which housing 26 displaces in changing of its position.

EFFECT: optimised protection.

9 cl, 8 dwg

FIELD: process engineering.

SUBSTANCE: invention relates to method and device for current source control 1 connected with hand-held working tool composed of torch 4. Current source parameters are with the help of control elements 3 of control and indication unit 2 at current source 1. Processing unit 9 built in current source 1 registers the torch displacement in space 6. Fast control over current source without taking off of protective clothes is allowed by activation of control function at current source. Then, displacement of torch 4 in space 6 is registered to set the torch position resultant from said displacement to control unit 2.

EFFECT: higher efficiency.

16 cl, 9 dwg

FIELD: process engineering.

SUBSTANCE: invention relates to welding, particularly to attachment of gas nozzle 33 to welding torch and to gas welding. Gas nozzle 33 is secured at holder 30 arranged at welding torch 10 for plug-in connection of gas nozzle 33 by turning the latter. To make this connection work, one of nozzle holder stages is composed of cam clamp to receive ring-like retainer 35. Second stage has guide surface 38 for gas nozzle 33. This stage has end thrust surface 37 for gas nozzle 33. Nozzle pipe 31 of welding torch 10 has at least one section composed of second guide surface 38 for nozzle 33.

EFFECT: better attachment.

8 cl, 10 dwg

FIELD: process engineering.

SUBSTANCE: invention relates to mount 29 of welding parameter I/O device 18 for welding set 1. Said mount is composed of elastic element or film 30 with two recesses 33 for fitting on two rotary handles of device 18 with first part 38 and second part 39. First part 38 of every recess 33 makes a passage for rotary handle 34. Second part 39 of every recess 33 serves to retain rotary handles 34 between two rotary axles 37. Extra data 31 and/or scale 32 is applied on aforesaid element.

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2 cl, 4 dwg

FIELD: process engineering.

SUBSTANCE: invention relates to method and device for current source control 1 connected with hand-held working tool composed of torch 4. Current source parameters are with the help of control elements 3 of control and indication unit 2 at current source 1. Processing unit 9 built in current source 1 registers the torch displacement in space 6. Fast control over current source without taking off of protective clothes is allowed by activation of control function at current source. Then, displacement of torch 4 in space 6 is registered to set the torch position resultant from said displacement to control unit 2.

EFFECT: higher efficiency.

16 cl, 9 dwg

FIELD: process engineering.

SUBSTANCE: set of invention relates to arc welding by consumable wire. Proposed method comprises feeding wire at the rate adjusted in compliance with measured electrical parameters in arc space. During sharp voltage drop in said arc space, it is bridged for short interval by controlled power switch located in area closer to welding head while at abrupt voltage rise in said space, wide feed rate is decreased in discrete steps to bridge said gap by said switch. After breaking said switch, wire feed rate is resumed. Proposed plant comprises welding head, power supply, control system with gap space electric parameters transducers and wire feeder. Controlled power switch is arranged parallel with arc space and connected to control system whereto connected is wider feeder that allows varying feed rate in discrete steps and resuming it in response to signals of electric parameter abrupt variation in dap space.

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3 cl, 3 dwg

FIELD: process engineering.

SUBSTANCE: invention relates to making welding electrode tip 13 wit relevant combination between material-diameter for fitting in guide channel 12. Welding electrode 13 is fed wire feeder via, at least, one guide channel 12 by means of contact tube arranged in welding torch 10. For process automation purposes, electric arc 15 is generated, prior to dressing, between contact plate 30 connected with electric power supply and welding electrode 13 to make electrode tip with due allowance for electrode material and diameter. Welding electrode tip is made half-round with diameter not exceeding, in fact, that of welding electrode 13.

EFFECT: easier electrode dressing.

18 cl, 14 dwg

FIELD: process engineering.

SUBSTANCE: invention relates to welding electrode rotation and feed device and may be used in chemical, oil industry and machine building. Welding electrode is fed in axial channel of rotary central shaft by feed rollers. Said rollers are mounted on said central shaft together with electrode feed mechanism, its inlet link, drive bevel gear, being fitted in sleeve revolving of central shaft. Said sleeve is articulated with central shaft and electrode feed drive by mechanical gearing made up of planetary one-row differential mechanisms. Quantity of gearing kinematic pairs is even, its gear ratio equal to unity. Differential mechanism with two inputs sums two motions, i.e. central shaft rotation and that of pinion frames of electrode feed drive differential mechanisms. Algebraic difference of angular speeds of central shaft and sleeve with bevel gear defines amount and angular rotation speed direction, hence welding electrode feed direction.

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1 dwg

FIELD: process engineering.

SUBSTANCE: invention relates to welding wire feed device used in arc welding of workpieces of strips. Proposed device comprises feed mechanism with drive and roller system, cartridge with wire, current feeding tip 7 connected with current feed line and furnished with outer 8 and inner 9 sleeves, copper nozzle 10 and arc protection nozzle 11 arranged on outer sleeve 8. Cylindrical torsion spring 12 is arranged on outer sleeve 8 of current feeding tip 7. Inner sleeve 9 is made from steel and has wire feed eccentric channel 13 and threaded hole on side surface, and is mounted to turn about axis with the help of said torsion spring 12. Bronze outer sleeve 8 has horizontal groove. Copper tip channel is arranged aligned with wire feed eccentric channel. Outer sleeve horizontal groove accommodates screw stop 16 connected with inner sleeve 9 and one end of spring 12. The other end of said spring is jointed to ring 17 arranged on outer sleeve 8 to be locked thereon by screw 18.

EFFECT: simple process of producing defectless welded joint, higher efficiency and reduced consumption of non-ferrous metal.

3 dwg

FIELD: technological processes.

SUBSTANCE: invention may be used to restore worn surfaces of cylindrical parts, and also to provide part surface with specific physical-mechanical properties in process of their manufacturing. Body 1 of cooled welding head has channel 18 for feeding filler wire into welding bath. In plane of head body inverted to processed part, recess 19 is arranged in the form of truncated cone side surface segment. In process of build-up, head is installed in transverse direction at the same distance from built-up part, and in axial direction - as inclined to the side of build-up along part axis. Pins 3 are evenly arranged around outlet of channel for feed of filler wire. Tungsten electrode used in device is arranged with blunt sharpening angle of 90-110° and with rounding radius on top of this angle equal to 0.5-0.75 of electrode diametre. Number of pins makes at least three, besides area occupied with them makes not more than 30% of their location circumference area.

EFFECT: improved efficiency of build-up process by provision of rational build-up thickness, reduced ridgeness of built-up layer, improved efficiency ratio of arc and prolonged service life of device with preservation of high process efficiency.

3 cl, 7 dwg

FIELD: electricity.

SUBSTANCE: mechanism includes body (1), core (2) being installed so that to move reciprocally, electromagnetic coil (4), core (2), retaining disc (9) fixed to the body (1), limiting nuts (8), ball-type electrode clamps and impulsive compression spring (7), control unit (19), cover (3) and plate (5) with nut (6). The ball-type electrode clamps are implemented as a set of balls (16) equal to electrodes number. The electromagnetic coil (4) is located in cover (3). The electromagnetic coil (4) and cover (3) form linear electromagnetic motor (LEMM), which is installed separately from electrode clamps and connected to control unit (19). The plate (5) is fixed to the core (2) while impulsive compression spring (7) is installed between the plate (5), limiting nuts and retaining disc (9).

EFFECT: improved welding rate due to electrode wire supply in bundle consisting of several electrodes in program-controllable mode.

3 cl, 4 dwg

FIELD: mechanics; electrical engineering.

SUBSTANCE: device consists of a welding head with a contactor tube and a guide roller travelling along the edges being welded. The roller holder is joined to the contactor tube. The welding head with the contactor tube and the holder with the guide roller are mounted so that to enable relocation across the welded joint. The axes of the guide roller holder and the contactor tube are positioned at an angle to each other. The guide roller is fabricated of a thermally resistant electrically non-conductive material. On the roller working surface there is a V-groove arranged with an angle of 45-90° whose depth exceeds the maximum arc depth value. The contactor tube and the guide roller holder are interconnected so that to enable their relocation relative to each other.

EFFECT: improved quality of the welded joint due to refined precision of the welding electrode orientation relative to the edges being welded combined with the welding process acceleration due to elimination of power arc capacity losses.

4 dwg

FIELD: electricity.

SUBSTANCE: input element of portable wire feeder is electrically connected with power supply. The output element is selectively and electrically connected with input element for receiving welding current. The contactor includes the first electrical terminal, the second electrical terminal and conductive jumper for selective electrical connection of the input element with output element. The first electrical terminal is electrically connected with the input element, while the second electrical terminal is electrically connected with the output element. The conductive jumper is implemented so that it can displace between the first position, when it connects electrically the first terminal with the second one, and the second position, when it is separated from at least one of terminals in order to disconnect terminals from each other. At least one of the following elements, i.e. the first electrical terminal, the second electrical terminal and/or jumper are implemented so that they can be disconnected from contactor independently for maintenance, repair or replacement purposes. Driving mechanism of wire feeding system includes motor and motor-actuated feed roller. It is intended for weld wire guiding to outlet element to ensure welding operation performance through guiding sleeve.

EFFECT: easier replacement of failed elements and reduction of wastes polluting environment.

10 cl, 6 dwg

FIELD: instrument making.

SUBSTANCE: invention relates to welding works, in particular, to the devices feeding the welding wire. The device comprises a pair of engaging gear wheels with a saddle-like circular groove set on parallel shafts arranged in the casing. The said wheels are fixed in the casing with a constant spacing on centers and axially shifted by the value depending upon the fed wire diameter. The above circular grooves have the opening angle of 0° to 120° with the difference in opening angles of the wheels should make at least 10°. The driving wheel shaft is provided with a pressure nut and a spring. The driven wheel shaft accommodates a spring or a spacer sleeve made from elastic material for the driven wheel to be fitted thereon, and an adjusting washer to vary the elastic properties of the said sleeve. The driving and driven wheels feature different angles of opening of the circular groove, while the wheels teeth have rounded off sharp edges, the teeth surface being polished.

EFFECT: continuous feed of wires of various diameters, both powder wires and a continuous cross-section wires, is ensured ruling out whatever defects on the wire surface in feeding.

3 cl, 4 dwg

FIELD: machine engineering, namely apparatus for feeding wire with connector suitable for supplying welding wire to cable-hose of welding torch.

SUBSTANCE: apparatus includes portion for feeding wire and connection portion. Carrying bracket of wire feeding portion and housing of connection portion are made as one-piece block of plastics material. Inlet opening of portion for feeding wire is arranged opposite relative to opening for wire inlet at inner side of connection portion; the last opening is arranged at lower side of recess for guiding wire. There is member for introducing wire inside inner opening. Wire motion path restricted by said two openings passes between feeding roller and pressure roller. Axle of pressure lever supporting pressure roller or axle of fixing lever is secured to inner end of housing of connection portion, preferably to lug. Axle of other lever is secured to protrusion of carrying bracket of wire feeding portion. Said protrusion is arranged opposite another protrusion in order to provide possibility of angular motion of levers. Such design prevents bending and skewing of wire.

EFFECT: improved design providing easy access to apparatus and to connector at repairing and adjustment.

7 cl, 6 dwg

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