Flexible sewing heavy-duty machine with set of automatic spool charger heads

FIELD: textile, paper.

SUBSTANCE: offered is sewing machine with automatic spool charger. Automatic spool charger accommodates clutch assembly mounted under sewing plane and fitted with spool receiver. Clutch assembly is actuated with drive shaft and moves from the first working position to the second charging position. Spool charger adjoins clutch assembly in the second position. Spool charger contains suction pipe removing any remained spool rod. Then spool charger charges equivalent spool from charging spool assembly to spool receiver before clutch assembly returns into position. In addition for sewing thick material, the needle is brought by needle carriage moving simultaneously with sewed material to support needle essentially in vertical position as being inside of sewed material.

EFFECT: possibility of sewing number of material layers with one or several stitch rows, as well as possibility of spool replacement in mid-seam.

28 cl, 21 dwg

 

The level of technology

The invention relates to sewing or strike machines and, more specifically, sewing or strike machines that perform Shuttle stitch, using the upper thread supplied to the needle, and the lower thread spool, or any other industrial stitch.

Has long been known sewing machine, using the upper thread supplied to the needle, which is inserted into the layers of the material to be knit together. The Shuttle mechanism of the hook hooks the loop in the thread on the end of the needle and loop the thread around the spool to form a Shuttle stitch before the needle is pulled back from the material when the material is pushed for the formation of the next stitch. Such sewing machines were effectively improved over the years with electronic control, which provides the ability to perform various types of automated stitching. However, a disadvantage of these known types of sewing machines is that they are designed only to pass through the fabric or material of limited thickness due to several factors, including the fact that the needle bends when it moves into the material and to provide the possibility of moving the stitching material, during the period of introduction. Additionally, because the spool is necessary to loop the upper thread that is s to form a Shuttle stitch, the ability of such machines for automated operation is limited by the need to replace the spool in the usual way, when the thread spool spent.

There are several inventions that relate to control the amount of residual thread spool to work when the car knew when to replace the spool before the thread ends. However, this does not apply to the time required to replace the spool and re-starting the stitching, especially in the middle of the long seams. Additionally, the process of alignment of the upper and lower threads and request removal of stitched material, in many cases, to gain access to the spool, are additional limiting factors to performance losses due to the required replacement of the spools.

In applications of the type staple fastening materials together, for example of the type of belts used to reduce a 20,000-pound payloads, for supplies and equipment in remote areas and/or for military use, the need to provide opportunities to sew multiple layers of high-strength fastening material may not be satisfied using known equipment, and all required work for flashing the finer material in the composite fields.

In other applications where it is desirable to sew impermeable layer of material on top of the mounting Mat is the real rough matting, known sewing machine can not achieve this goal, partly because of limited opportunities in height and inability to handle the thickness of the material on which the needle can penetrate and still perform homogeneous Shuttle stitch. Additionally, in some applications, the type of stitched canvas or large covers require parallel seams, which may be spaced at a distance from one to several inches, and/or hardening may have many rows of stitches. Currently this is done by using multiple passes of the sewing machine, which is both laborious and time consuming, depending on the length to be the stitching and material of the thread length of the spool, which can be wound on a spool.

It is desirable to create a sewing machine, having the flexibility to address many of these problems, and be able to sew multiple layers of material along one or more rows of stitches. Also extremely beneficial to solve the long-known problem need to replace the spool in the middle of a seam.

The invention

The present invention provides a sewing machine heavy duty, which is aimed at solving the aforementioned problems associated with the known sewing machines, and which enables shivani is together multiple layers of material to approximately four inches thick or more.

In accordance with one object of the invention is provided a sewing machine having automatic spoleczny charger. Automatic spoleczny charger contains an Assembly of hooks mounted below the plane of the staple, with the holder of the spools. Assembly hooks is driven by the drive shaft, and it can be moved, preferably by rotation of the first, working, position in the second, loading, position. Spoleczny charger installed adjacent manner with the Assembly of the hooks in the second position. Spoleczny charger includes a suction pipe, which removes any remaining core of the spool and free filaments. Suction is used to remove any remaining core of the spool, which is almost spent. Then spoleczny charger charges the replacement spool from the spool loader Assembly in the receiver of the spools in the Assembly hooks. Spoleczny pin preferably is moved from the Assembly hooks, and the Assembly hooks returned to the first operating position.

In a preferred embodiment, the Assembly hooks can rotate relative to the drive shaft hooks so that there is no need to disconnect and re-connect the drive system, which can potentially lead to loss of synchronization.

Preferably, spoleczny charger is also able to move the I to the Assembly hooks on it to charge the spool and to provide a gap during movement of the Assembly hooks.

In a preferred embodiment, the Assembly of the hooks includes a sensor for detecting when the spool is almost spent. Additionally, to ensure the passage of the material through the sewing machine is preferably provided with hook in the form of a set of toothed rollers, which can be hooked and be split between the drive wheel when the Assembly hooks is moved from the first, working, position to the second position charging spools.

In a preferred embodiment, spoleczny charger includes a supply of bobbins, charged on the traction mechanism. To charge one spool receiver spools Assembly hooks, pulleys traction mechanism are pulled forward so that the last spool slides off the end thrust of the feed mechanism in the receiver spools. Preferably the control lever enables the release of only one spool with the thrust of the feed mechanism in the receiver spools.

In a preferred embodiment, spoleczny pin preferably set to move in at least two coordinate axes, in order to ensure the possibility of moving to the Assembly hooks and from her when she is in the second, loading position. In a preferred embodiment, the suction pipe is formed by a Venturi tube and mounted to rotate is and loader spool Assembly.

Preferably, the presser lever spool is installed separately from the Assembly hooks and provides up and down simultaneously with the actuation of the sewing machine so that it rises up from the spool, to allow the loop of the upper thread to pass under the lever. Additionally, the lever attached to the sensors so that they define, when the spool is almost spent, and signal to the controller, causing the effect of recharge occurring automatically.

In the preferred embodiment, when determining the clamping lever, the spool is almost spent, thread cutter thread spool gears thread spool and cuts it. Additionally, the upper cutter gears preferably the upper thread and cuts it to prevent further stretching of the filaments during the replacement spool. Then the Assembly of the snap hooks from the first operating position to the second charging position, in which any remaining portion of the original spool is removed through the suction pipe, and load a new spool.

In one preferred embodiment, the Assembly hooks can slide on the drive shaft so that it can be located in any of a variety of provisions to ensure the ability to adjust the width of the neck of platinum sewing machine and/or provide the the ability to host multiple sewing heads next to each other, as described in more detail below.

Another object of the invention of the sewing machine, you can install one or more sewing heads and adjust to the required distance, to provide a variety of lines that are simultaneously executed.

In one preferred embodiment, the Assembly hooks is rotated from the first position to the second position by the actuator rotational motion.

Another object of the invention additional spool located on the retaining traction sheaves, is inserted into the receiver spools Assembly hooks, using a jet of compressed air.

Another object of the invention spoleczny pin can be moved into position replenishment, where you can charge one or more new spools, while the sewing machine continues to operate. Preferably, the thrust of the feed mechanism is rotated to the worker at the machine or automated device replenishment in the position of replenishment so that you can charge at the same time many new spools.

Another object of the invention to provide a sewing machine to sew multiple layers to be stitching together a thick material, which may have a thickness of 2 inches, 3 inches and 4 inches or more, using a uniform Shuttle stitch, needle summing up the upper thread octanal who live on the carriage of the needle. The slide needle set for sliding horizontal movement simultaneously with the movement of the material, the stitching sewing machine. Needle set for vertical movement (up and down) in the carriage of the needle. This provides the ability to move the needle up and down for stitching, while all the needle carriage is moved horizontally back and forth along with the material, the stitching during the period when the needle is inserted, so that the needle remains, in General, parallel, vertical alignment while stitching. This eliminates the deviation of the needle, which could break the needle in thick and/or rigid materials that need to be sewn together. It also provides high speed stitching multiple layers of material, because there is no binding tilting movement of the needle.

Preferably, the slide needle set for sliding movement, at least two horizontal guide rods and operate simultaneously with the movement of the needle into the material to be binding, and move horizontally simultaneously with the rollers that pull the material to be stitching using the sewing machine.

In the preferred embodiment, many of the upper-head sewing machine mounted for sliding peremeshany is on the top frame of the sewing machine and drive shafts so to the distance between a set of needles for parallel stitching can be adjusted to any desired interval.

Preferably, the upper thread is provided the device of the tension of the thread and cut the thread, and they include a first hook-driven power drive, which creates additional slack in the upper thread and the second power actuator, which pulls the thread from the needle to the actuator controlled by a device cutting of the thread, which cuts a thread, while still leaving sufficient tail in the needle to re-start stitching without having to re-start the thread in the needle.

Although the features and elements of the present invention is described in preferred embodiments, implementation in specific combinations, you can use each feature or element separately (without other features and elements of the preferred embodiments or in various combinations with the features and elements of the present invention or without them.

Brief description of drawings

The foregoing summary of the invention and the following detailed description of preferred embodiments of the invention will be better understood when read in connection with the accompanying drawings. Order to illustrate the invention the drawings shown embodiments of, the crust is ASEE time, which is preferable. However, it should be understood that the invention is not limited to the illustrated exact layout.

Figure 1 represents a front view, specifically, in cross section, showing the upper needle Assembly and lower hooks with the spool for sewing machine in accordance with a preferred embodiment of the present invention.

Figure 2 is a view similar to figure 1, with the Assembly of the hooks are rotated 90 degrees so that the receiver spools moved, in General, from a vertical orientation in a horizontal orientation.

Figure 3 is a perspective view, partly carved, depicting the Assembly of the hooks in the position shown in figure 2, with the Assembly spolecznego of the pin, is moved into position for suction spent almost the spool from the receiver spools.

Figure 4 is a perspective view similar to figure 3, which spoleczny pin is moved into the second position, in which the charging mechanism for spools aligned with the receiver of the spools in the Assembly hooks.

Figure 5 is a perspective view similar to figure 4, depicting the most recent spool for retaining traction loading spools of the spool Assembly, charged in the receiver spools Assembly hooks.

6 is a perspective view similar to figure 3, depicting a loaded spool in position when loading the spool Assembly is drawn.

Fig.7 is predstavljaet side view, depicting the Assembly of the hooks are rotated back into the first operating position.

Fig is a detailed perspective view of a preferred variant of the invention, depicting the Assembly of hooks and energizing the spool Assembly in the first position of the Assembly hooks.

Figure 9 is a detailed perspective view, similar Fig, depicting the Assembly of the hooks are rotated to a position in which the receiver of the spools can charge a new spool.

Figure 10 is a perspective view of another preferred variant of the invention, depicting two spool loader assemblies located next to each other in the position of charging bobbins for sewing machines having two parallel drive needles.

11 is a perspective view similar to figure 10, showing two spool loader Assembly is moved to the position of the replenishment of the spools.

Fig is a schematic front view of the sewing machine in accordance with the embodiment of the present invention, is shown in figure 10 and 11, with two movable upper head, the two assemblies, hooks and two spool loader assemblies on the frame of the sewing machine.

Fig is a detailed front view of the sewing machine with two movable upper head, the two assemblies, hooks and two charge what they spool assemblies (Fig).

Fig represents an enlarged front view in perspective of the Assembly of heads of the needles shown in Fig depicting the tensioning mechanisms and cutting the upper thread.

Fig is a schematic side view of the upper head of the sewing machine, showing the Assembly of the needle carriage and the drive device in accordance with a preferred embodiment of the invention.

Fig is a side view of the upper head of the sewing machine in accordance with another preferred embodiment of the invention, depicting the Assembly of the needle carriage and the drive device with the needle, shown in the upper position. (Note: the carriage of the needle should be brought to the right in this position before the needle touches the material to be binding.)

Fig is a view similar to Fig showing the upper head of the sewing machine with the needle in an intermediate position, in which the material to be binding, will be almost fully geared.

Fig is a view similar to Fig and 17, showing the upper head of the sewing machine with the needle shown in its lowest position in which the hook hooks the thread.

Fig is a detailed rear view of a sewing machine, depicted in Fig showing the drives for the upper head of the sewing machine.

Fig represents an enlarged detailed front view of the future drive system for a sewing machine in accordance with a preferred embodiment of the invention, shown in Fig.

Fig represents an enlarged detailed rear view in perspective of the drive system for a sewing machine in accordance with a preferred embodiment of the invention shown in Fig.

A detailed description of the preferred embodiments

In the following description uses a specific terminology for convenience only and should not be considered as limiting. The words "lower", "upper", "left" and "right" direction in the drawings to which reference is made. Additionally, the terms "a" and "one" are defined as including one or more of these elements, if not mentioned explicitly.

Referring now to figure 1-9, note that it is shown a sewing machine 10 with automatic charging spools in accordance with the present invention. Sewing machine 10 preferably includes a frame 11 (shown in more detail in Fig and 13)having an upper head 12 of the supply needle and the lower Assembly 14 of the hooks that hold the spool 16 for each combination of the upper head 12 needle/lower Assembly 14 hooks. As shown in figure 1, the Assembly hooks 14 preferably includes a rotating hook 18, which rotates around the receiver 20 spools. The hook 18 is driven by a drive shaft 22 and a pair of bevel gears 24, 25. Drive : is ADI in the form of feed material toothed wheels 26 are located near the hole for the needle and driven individual leading toothed wheel 27, as shown in Fig.7. Intermediate gears 28 are located between the gear wheels 26 so that they all were set in motion in the same direction. The lever 30 spolecznego of pin/sensor holds the spool 16 in position and is actuated through a Cam 31 on the drive shaft 22 through a servo mechanism 32 of the roller, which moves the support rod 33 of the lever up and down simultaneously with the movement of the hook 18 so that the loop of the upper thread, you could skip around the spool 16. The sensor 34 is attached to the end of the lever, as shown in Fig to determine when the lever 30 reaches down, indicating that the thread spool on the spool 16 is almost spent. Gear wheel 36 actuator connected with the Assembly hooks 14 and preferably is driven by a toothed belt 37 to move the Assembly 14 hooks in the charging position of the spool after the lever 30 spolecznego of pin/sensor indicates that the thread spool is almost spent.

Although the rotate 90° is the preferred move, you can use other layout to make the Assembly hooks 14 to move vertically and/or horizontally in the recharge position of the spool.

As shown in figure 2, after the upper and lower thread spool cut off automatic cutting mechanism, described in detail below, the entire Assembly 14 kruck is preferably in turns down a toothed belt 37, drive the toothed wheel 36 actuator attached to the Assembly 14 hooks. This rotation is preferably performed relative to the drive shaft 22. The feed material gears 26 are detached from the driving gear wheel 27 (shown in Fig.7). As soon as the Assembly 14 hooks turned in the position of figure 2, used auto spoleczny pin 40, which is shown in Fig.3-6, to insert a new spool 16 in the receiver 20 spools. As shown in figure 3, automatic spoleczny pin 40 includes a suction pipe 42 having air jet 43, which faces the direction, in General, from the receiver 20 spools. Spoleczny pin 40 is set to preferably move in the directions X and Y. In a preferred embodiment, spoleczny pin 40 is also capable of moving in the Z-direction, so that it can be moved from the progress of the Assembly 14 of the hooks to allow it to rotate to the desired position before it moves to the first position, in General, shown in figure 3, where the suction pipe 42 is located near the receiver 20 spools. Air is blown through air jet 43, creating a Venturi effect, drawing out any remaining thread spool or coil, which is still in the receiver 20 spools and must be removed. Preferably, suction t the UBA 42 mounted on the swing lever 44, driven by the actuator 45 so that it can be rotated from the receiver 20 spools and allow spoleczna the pin 40 to move only in the X direction for his next move so that the rod 46 charging cops, in General, aligned with the receiver 20 spools, as shown in figure 4.

Rod 46 charging the spool preferably includes cravings, which can easily slide many spools 16, for example, by providing spools 16 formed in the pipe, which can then easily slid out and install on the rod 46. In a preferred embodiment, the spool 16 can be placed on rod 46 charging spools, and they can freely slide along it. To enable easy charging itself spoleczny charger may be able to move into position over-charging, as described in more detail below, or rod 46 can rotate the image so that it can turn for easily accessible position charging.

Actuator 47 (shown in detail figure 11) with lever 48 is located near the end of spolecznego of pin 46 to prevent accidental falling of the spool 16 from the end. As soon as spoleczny pin 46 is located close to the receiver 20 spools, used air through the nozzles 50, as shown in figure 5, opposite the bowl-shaped netpolitik 5, located on the deadlift 46 charging spools, which pushes the spool 16 forward. Actuator 47 moves the lever 48 so that the receiver 20 spools charged one spool 16. Then the actuator 47 re-clamps the lever 48 in position to prevent any further decline of the spools 16 with the pin 46. Then automatic spoleczny pin 40 is moved from the receiver 20 spools, as shown in Fig.6, so that the spool 16 remains in the receiver 20 spools.

Note that in the preferred embodiment of the invention the tail 17 of the thread spool 16 should be free, and practically it was found that the spool 16 can be charged on rod 46 charging spool with tails hanging down several inches, without any problems. Although the mechanism for moving spolecznego of the pin 40 in the directions X, Y and Z preferably is a pneumatic cylinder and the respective linear guides, you can use any suitable mechanism. Additionally, you can include rotating the lever depending on the specific path programmed for spolecznego of the pin 40, however, been found particularly effective to have it tilted inward to accommodate the suction pipe 42 in the vicinity of the receiver 20 spools to ensure that any remaining portion of the spent spool will be half the awn sucked.

Referring now to Fig.7, we note that shows the front support rod 54, which holds the Assembly hooks 14 in the working position. Rod support 54 can be moved inward and outward, and it preferably engages in the slots 56 of the Assembly 14 hooks to ensure sustainable support to carry the load produced by the needle 13, when it is conducted through the material to be binding. Preferably, the rear end of the Assembly 14 hooks also in contact with the stationary support element 58 of the frame 11 of the sewing machine 10 for additional support and opportunities to support the load.

Fig provides a detailed view of the Assembly 14 hooks in the first, operative position and the automatic pin 40 of the spool in the standby position. Feed rollers 91 and 93 shown in position at the rear of the hook 14 for pulling the material through them, in addition to the 95 foot, which moves down to the location for compression of the material to the driven gear wheels 26. Preferably, the pad 95 is raised and lowered pneumatically and also preferably includes rollers. The rotary shaft 38 of the actuator used to actuate the timing belt 37, is also clearly shown. Although he is turning tool actuation in a preferred embodiment, if desired, you can use is to use straight actuator with articulated joints. Also shows clearly the stopper 33a movement of the lever 33. This stopper 33a preferably can be adjusted to prevent the overrun of the lever 33, particularly when the Assembly hooks 14 is rotated down into the charging position of the spool, shown in detail in figure 9. Also shows the bracket 34a sensor 34. Automatic spoleczny pin 40 is also shown in more detail.

Referring now to figure 9, note that shows a detailed view of the Assembly 14 of the hooks are rotated to a position in which the receiver 20 spools can charge a new spool 16 automatic spoleczny the pin 40. The lever 30 spolecznego of pin/sensor, which continues from the lever 33 is held in position by the stopper 33a and does not turn down the Assembly 14 hooks. The shaft 39, which rotates the lever 33, is also clearly shown. The drive sprocket 27 with the associated toothed drive belt and pulleys can also see when separated from the gear wheels 26 of the feed mechanism.

Although the preferred implementation of the automatic spolecznego of the pin 40 to the sewing machine 10 has been described in detail, the key characteristic of the preferred option for implementation, which provides the ability to perform the moving Assembly 14 of the hooks is to make the Assembly hooks 14 are able to rotate relative to the part of the drive shaft 22. This arrangement ensures that there are no synchronization problems created by the disconnection or re-connection of the actuator hooks. It also enables the receiver 20 spools on the Assembly 14 hooks to turn down, to ensure easier access for automatic replacement of the spool 16. Assembly 14 hooks also does not include the lock bolt, which is usually on most assemblies, hooks, and pins can also be optionally excluded. In this case, the Assembly 14 hooks made by changing the standard hook, available from Seiko (Seiko Company), Japan, by removing the latch bolt. The bolt can be removed and replaced with a small centering the ball in the base of the basket spool or receiver. There is no need for the latch, as the spool is held in position by the lever 30 during the normal operation of the staple when the Assembly hooks 14 is in the first operative position.

Referring again to Fig, note that the shown actuator 57, which pulls the floss spool 16 in the cutter 59. The end of the hook thrust 61 having an end that hooks the thread spool and pulls it in the cutter shown in dotted lines. Then the actuator 63 of the cutter is actuated to cut off the thread spool. The cutter 59 and actuators 57 and 63 are preferably installed on able in order to romatsa Assembly 14 hooks, to support and closeness cut a piece of thread of the spool, and the alignment of the thrust 61, which captures the thread spool and pulls her into the cutter 59.

Referring now to figure 10 and 11, we note that shows another object of the present invention, which shows two assemblies 40, 40' for the sewing machine with two needles/two hooks. Energizing the spool Assembly 40 is the same as described above, and the second loading of the spool Assembly 40' is her mirror, to be able to put the loader spool Assembly 40, 40' closer to each other. Although shown with two spool loader assemblies 40, 40', you can use more or fewer loader spool assemblies 40, 40', depending on the number provided layouts needles/hooks.

Energizing the spool Assembly 40, 40' are installed on are able to turn the frame element 110. The frame element 110 has a support 112 bearings at each end, as clearly shown at 11, and is rotated by the actuator 114 is approximately 90° so that traction 46, 46' charging spools are moved in a vertical position in which they can refill with new spools. This can be done at a time when the sewing machine continues to work to minimize the time.

In a preferred embodiment, the actuator 114 is a linear power actuator and connected srednem 116. The belt 116 rotates the pulley 118 which is connected with the shaft from the support bearings 112, which is connected with the movable element 110 of the frame. Although this arrangement is preferred, if desired, you can use other layout actuator comprising actuator rotational motion, and the amount of rotation can vary from about 75° up to approximately 135° depending on the specific layout. Preferably, actuators for energizing the spool assemblies are fully pneumatic and pneumatic lines (not shown) have enough extra clearance to allow the necessary rotation to reload.

Turning back to 11, we note that shows the actuators 128, 128' Z-direction for energizing the spool Assembly 40, 40'. Additionally, it also shows actuators 129, 129' X-direction. Fully actuator 47, 47' under the lever 48, 48' is also shown in detail and give effect to guarantee that charged only one new spool 16, as previously described. Also shows clearly the thrust 46, 46' charging spools with a bowl-shaped notepadfile 52, 52'.

In a preferred embodiment, a fully rotated element 110 of the frame loader spool assemblies 40, 40' is installed to move up and down in the direction Y. the Support 112 under lipnikov connected with power actuators 130, which move the element 110 of the frame up and down to adjust the height of the charging spool assemblies. Preferably, the actuators 130 are lowered to rotate the element 110 of the frame to rotate the loading of the spool Assembly 40, 40' in position replenishment, as shown in figure 11.

Turning now to Fig-14, note that in the preferred embodiment, the sewing machine 10 includes two upper heads 12, 12' feed needle. Although shown with two heads 12, 12', specialists in the art should understand that you can use one, three, four or more heads, and the heads 12, 12' along with assemblies 14, 14' of the hooks can slide on the frame 11 of the sewing machine 10 to provide the desired spacing between adjacent mirrored heads 12, 12', down to approximately 3 inches or less, without any additional measures being implemented. Energizing the spool Assembly 40, 40' can be placed in the same way.

Preferably, the drive shaft 66, 22 for each of the heads 12, 12' and assemblies 14, 14' hooks include a plane, which continues along the length of the shafts 66, 22, and drive pulleys, gears and/or sprockets can slide to the desired position for each of the drive shafts 66, 22.

Turning now to Fig, note that the needle 13 is installed on the host the needle shaft 62, which slides in the above and down in the carriage 60 of the needle. The drive lever 64 is connected to the shaft 62 of the needle and is driven by a drive mechanism for the distribution of the timing belt from the drive shaft 66. Provided system of weights and levers for other movements of perebejchika 68 threads in a way that should be obvious to experts in the given field of technology.

The carriage 60 needles are mounted for horizontal sliding movement in the direction of movement of the material to be binding, at least two parallel shafts 70. In one preferred embodiment, shown in Fig, provided with four parallel shaft 70, which extend through bushings in the carriage 60 of the needle. Separate the drive lever 72 connected to the drive shaft 74 is connected to the carriage 60 of the needle through the connecting device 76 to move the carriage 60 of the needle at the same speed that the stitching material in the feed direction of the material, indicated by arrows 82, while the needle 14 is in the lower position in which it penetrates into the material to be binding. The carriage 60 of the needle is returned back to its original position, when the needle 13 is in its upper position, rosapenna with stitched material. This arrangement ensures that the needle 13 stores the forward direction of movement up and down in the material and from it without any tilting movement to the Oia. This arrangement provides the ability to easily sew together thick materials, such as twelve or more layers of nylon fixing straps with thickness > 11/2inches, or flash through pages of the phone book more than two-inch thickness without breaking the needle 13 or damaging the machine 10.

In accordance with the invention used commercially available chetyrehdyuymovym needle to stitch a variety of materials. However, you might want to use a longer needle, and near the needle if desired, you can position the adjustable intermediate support depending on the thickness of stitched material.

In a particular preferred embodiment, using the sewing machine 10 for stitching two different types of materials, where one material is non-woven, randomly aligned fiber mesh thickness of at least 0.5 inch, which has some screening area, preferably at least 40%. It can be attached to an impenetrable layer of polymeric material by stitching, to form a composite material, which is porous in the grid area.

Turning now to Fig-18, note that the detail there is shown another preferred variant implementation of the head 12 in accordance with the invention. On Fig needle is 13 shown in "upper" position, on Fig needle 13 is shown in an intermediate position and Fig needle 13 is shown in a fully "lower" position. Note that in these drawings, the clutch 76 to move the carriage 60 of the needle not shown moved for clarity. However, on the basis of the present disclosure should be understood that during the actual operation of the stapling carriage needle 60 is in the most right position along the shaft 70 in Fig. 16, moved slightly to the left on the shafts 70 on Fig and in the middle part of the shaft on Fig. The carriage 60 will continue to move to the left when the needle 13 is lifted up and out of the material.

One difference from option exercise of the heads 12 on Fig and variant implementation of the head 12, shown in Fig-18, is that on Fig-18 uses only two of the shaft 70. The shafts 70 are functioning in an identical manner to enable sliding of the carriage 60 of the needle. Also shown actuator 96 for lifting and lowering the legs 95.

Referring again to Fig-14, we note that there is shown in detail automatic system 83, 83' cut the thread for the top thread 84, 84'. Automatic system 83, 83' cutting threads provided on each of the top heads 12, 12' feed needle. Automatic cutting system thread contains the first actuator 85, 85', which gears and pulls the excess thread from the yarn supply (not shown) before it cut off. C is the actuators 86, 86' cut the lead in action to pull the thread in the Assembly 87, 87' of the cutter where it is cut through the actuator 88, 88' (best shown in Fig), which closes the cutting plate type shear, opposite the fixed plate. This automatic cutting is beneficial for the removal of material and for cutting threads, when replacement of the spent spool used auto spoleczny pin 40.

Leading wheels 91, 93 material (Fig shows the top and bottom) for pulling the material through the sewing machine 10 also clearly shown in Fig along with a power actuator 131 to move the upper sprocket wheels 91 up and down. These wheels 91, 93 material can also slide back and forth on the drive shafts 133 and 135 so that they could be placed in an appropriate position depending on the position of the heads 12, 12' feed and needle assemblies 14, 14' hooks.

Drive arrangement for the preferred alternative implementation of the sewing machine 10 with two heads 12, 12', assemblies 14, 14' hooks and loader spool assemblies 40, 40' shown in Fig-21. All drive shafts are driven by the electric motor 201, shown on the left side Fig, through a series of drive sprockets and timing pulleys, Cams and tracking mechanisms and reciprocating mechanisms to ensure that government is Ino calculated rotational and vibrational motion to the driven components of the sewing machine 10. The motor 201 drives the toothed belt 202 through the pulley 204, shown in Fig. The guide roller 206 mounted for tensioning of the belt 202. A belt connected to the pulley 208 mounted on the drive shaft 22 of the hooks. The second pulley 210 is mounted on the drive shaft of the engine 201 and drives a second toothed belt 212. As shown in Fig and 21, the second toothed belt 212 is connected with a drive pulley 214 on the drive shaft 66 to actuate the needle. The pulley 216 on the shaft 66 is connected through a belt with a pulley 218 220 mounted on the shaft hand-drive manipulator 222. The sensor 224 speed preferably is located at the end of the shaft 66. Eccentric drive mechanism 226 is connected to the drive shaft hooks 22 and actuates the lower drive shaft 133 feed rollers using the connecting rod and the one-way clutch mechanism clutch. Such eccentric drive 228, which is connected with the shaft hand-drive manipulator 222, is connected via the connecting rod 230 and the one-way clutch mechanism clutch to the drive shaft 232 of the needle carriage. An additional lever 234 and the clutch 236 is connected with the shaft 232 and actuate the upper shaft 135 of the feed rolls through the one-way clutch 238 clutch. Reversing devices 240 and 242 are preferably provided on the lines from the management and the driven rollers and the shaft 232. Preferably, rotation of the shaft 38 is provided with a separate motor or actuator, shown in Fig and 9, to actuate the belt 37 for rotation of the Assembly 14, 14' of the hooks from the first, working, position to the second position charging spools.

Although Fig-21 shows the preferred drive arrangement, certain aspects of the drive are not critical and can change until secured correctly calculated move, as should be clear to experts in the given field of technology.

In a preferred embodiment, the power drives the sewing machine 10 are pneumatic. However, specialists in the art it should be clear that it is possible to use other types of actuators, such as electric or hydraulic, depending on the particular application.

Use the sewing machine 10 in accordance with the present invention provides a continuous stitching heavy duty mounting materials and/or other thick materials to a thickness of more than four inches effective way, without having to manually replace the spool 16 when the spool consumed by automatically detecting and replacing them. When many heads 12 are at the same time, you can post them nearer to or farther from each other, hung the basis of the particular application. You can also connect two adjacent upper head 12, 12' with the carriage mechanism, which feeds two very closely spaced needles. Assemblies 14, 14' hooks can move up closer to each other (within 1 inch)to provide a very close-spaced, parallel stitching heavy duty that may be useful for canvas or other applications for fastening materials heavy mode.

As the spool 16 is replaced automatically, this type of sewing machine can operate continuously. Accordingly, found that it is preferable to automatically apply oil to the hook Assembly 18 14 hooks during charging of the spool 16 to prevent excessive wear. Standard Assembly hooks do not bear a sufficiently large reservoir of oil for continuous heavy duty service, provide a sewing machine 10 according to the present invention. Assembly hooks 14 preferably has a standard type of Assembly hooks and compared with a standard installation it is modified only for establishing agile way. This is done to allow the Assembly of the hooks 14 to rotate relative to the drive shaft 22. In all other respects, the hook 18 operates in a known manner, looping the upper thread, captured from the needle 13, which penetrates through the material to be stitching around the spool 16 when the Mat is real, subject to the stitching, is pulled forward through the sewing machine 10.

Although automatic spoleczny charger is preferred in accordance with the sewing machine according to the present invention, it also can be adapted to use in other sewing machines, to alleviate the need for constant recharging of the spools. This is mainly ensured by the moving Assembly 14 hooks, preferably by rotation relative to the drive shaft 22 to provide access to install the new spool 16 while maintaining synchronization of the actuators needles and hooks. Additionally, although it is preferred to automatic Assembly spolecznych charger were installed to move into position replenish stocks to allow for automated or manual replenishment of new spools, it is not required in accordance with the invention.

Additionally, providing automatic upper and lower cutting threads, preferably performed in connection with automatic spoleczny the charger, can be performed separately, in order to provide automated cutting of threads of a product that was made.

The Assembly 60 of the carriage needles can also be performed separately in sewing machines, to ensure the stitching thicker material, allowing the needle 13 PE amestica only vertically relative to the stitched material, without any tilting movement, which leads to breakage of the needles. This is performed by moving the carriage 60 of the needle horizontally simultaneously with the stitching of the material during the period during which the needle 13 is inserted.

Therefore, the sewing machine 10 in accordance with the invention provides several advantages when sewing thick and/or hard ware continuously effective way and without breakage of the needle.

Preferably, the control of the sewing machine 10 is performed via the PLC (programmable logic controller) so that movement of the actuators can be operated using the provided sensors.

Although in the preferred embodiments of implementation have been described various actuators, such as using toothed belts and toothed pulleys, specialists in the art it should be clear that it is possible to use other types of motors, such as direct gear, chain mechanisms and the drive to the drive sprocket, or any other known actuator, which provides synchronization between the various components, to be of service.

Although there have been described preferred embodiments of the invention, the invention is not limited to the above specific options for implementation, which should Rass is atrevete just as an example. You can develop additional modifications and extensions of the present invention, and all such modifications, as expected, are within the scope of the present invention, as defined by the attached claims.

1. Sewing machine containing a frame having a top of the sewing head and the lower Assembly hooks supported by it, the Assembly hooks mounted below the supporting surface for the material to be binding, and includes the receiver of the spools, and the Assembly of the hooks is driven by the drive shaft, and it can be rotated about the axis of the drive shaft from the first operating position into the second position charging spools, spoleczny pin mounted for movement to a position adjacent the Assembly hooks in the second loading position, and spoleczny charger includes a removal device which removes any remaining core of the spool, and the feeder spools, which charges the replacement spool from spolecznego the pin in the receiver of the spools in the Assembly hooks.

2. Sewing machine according to claim 1, in which the Assembly of the hooks includes a sensor for detecting when the spool is almost spent.

3. Sewing machine according to claim 1 or 2, additionally containing a rotating hook to propel the material through the sewing machine, educated in widemouth toothed rollers, which can be disconnected from the drive wheel when the Assembly hooks is moved from the first operating position into the second position charging spools.

4. Sewing machine according to any one of claims 1 to 3, in which spoleczny charger includes a supply of bobbins, charged on the traction mechanism.

5. Sewing machine according to any one of claims 1 to 4, in which charging one spool receiver spools Assembly hooks pulleys traction mechanism are pushed forward by the pusher so that the last spool is adapted to slide from the end thrust of the feed mechanism in the receiver spools.

6. Sewing machine according to any one of claims 1 to 5, in which the control lever is located on spoleczna the pin to secure the release of only one spool with the thrust of the feed mechanism in the receiver spools.

7. Sewing machine according to any one of claims 1 to 6, in which spoleczny pin mounted for movement in at least two coordinate axes, in order to ensure the possibility of moving to the Assembly hooks and from her when she is in the second loading position.

8. Sewing machine according to any one of claims 1 to 7, in which the removal device contains the suction pipe.

9. The sewing machine of claim 8, in which the suction pipe use a Venturi to remove the spent spool from the receiver spools.

10. The sewing machine of claim 8, in which the suction pipe is recovered for rotational movement on the charger spools.

11. Sewing machine according to any one of claims 1 to 10, in which the presser lever spool is installed separately from the Assembly hooks and provides up and down simultaneously with the drive of the sewing machine so that it rises up from the spool to provide a loop of the upper thread passing under the arm.

12. Sewing machine according to claim 11, further containing sensors attached to the lever for detecting when the spool is almost spent, and signaling the controller to start the operation of reloading.

13. The sewing machine 12, which additionally contains the mechanism for cutting the thread spool, gears thread spool and cut it on prijemnom the lever when it detects that the spool receiver spools almost exhausted.

14. Sewing machine according to item 13, which additionally contains the mechanism for cutting the upper thread, which gears the upper thread and cut it to prevent further stretching of the filaments during the replacement spool.

15. Sewing machine according to any one of claims 1 to 14, in which the Assembly hooks can slide on the drive shaft so that it can be located in any of a number of provisions.

16. Sewing machine according to any one of claims 1 to 15, further containing a second upper cylinder, and a second Assembly of the hooks and the upper head Assembly hooks can slide on the frame and drive shafts to provide vozmozhnostregulirovaniya width of the neck of platinum sewing machine and/or to provide the ability to host multiple sewing heads at varying distances from each other.

17. Sewing machine according to any one of claims 1 to 16, in which the Assembly hooks is rotated from the first position to the second position by the actuator rotational motion.

18. Sewing machine according to any one of claims 1 to 17, in which the feed mechanism of spools includes a holding rod for spools on which the moving image is full of spools, and a pusher for pushing the last of the spool with the retaining rod in the receiver spools.

19. Sewing machine p, in which the spool is inserted into the receiver spools Assembly hooks, using a jet of compressed air.

20. Sewing machine according to any one of claims 1 to 19, in which spoleczny pin can move into the position of replenishment, which can charge one or more new spools, while the sewing machine continues to run.

21. Sewing machine according to claim 20, in which the thrust of the feeder holder spools rotatable manner is installed on spoleczna the pin and adapted for rotation to the worker at the machine in position to recharge so that at the same time you can charge a lot of new spools.

22. Sewing machine according to any one of claims 1 to 21, containing a lot of sewing heads and assemblies, hooks mounted on the frame, which can be adjusted to obtain the desired interval, to provide a variety of stitches to be performed at the same time.

23. Seam is ina machine according to any one of claims 1 to 22, in which the needle summing up the upper thread of the upper head installed on the carriage of the needle, to allow the sewing machine to sew multiple layers of thick material.

24. Sewing machine according to item 23, in which the needle carriage mounted for sliding horizontal movement simultaneously with the movement of the material, the stitching sewing machine.

25. Sewing machine according to item 23 or 24, in which the needle is mounted for vertical movement in the carriage of the needle so that the needle moves up and down to the stitching, while the needle carriage is moved horizontally back and forth simultaneously with the stitching material.

26. Sewing machine according to any one of p-25, in which the needle is inserted so that the needle is maintained essentially in parallel vertical alignment while stitching, eliminating the deviation of the needle.

27. Sewing machine according to any one of p-26, in which the needle carriage mounted for sliding movement, at least two horizontal rails tagum and is actuated simultaneously with the movement of the needle into the material to be binding, and is moved horizontally simultaneously with the feed rollers, which pull the material to be stitching through the sewing machine.

28. Sewing machine according to any one of the preceding paragraphs, further containing a scavenger which has to feed the thread and cut the thread, located on the top of the head to the upper thread, which includes a first hook, which controls the actuator to create additional slack in the upper thread, and a second actuator to pull the thread from the needle to the actuator that controls the cutting device, which cuts off the thread, still leaving sufficient tail of the thread in the needle to re-start stitching without having to re-start the thread in the needle.



 

Same patents:

FIELD: textile, paper.

SUBSTANCE: offered is sewing machine with automatic spool charger. Automatic spool charger accommodates clutch assembly mounted under sewing plane and fitted with spool receiver. Clutch assembly is actuated with drive shaft and moves from the first working position to the second charging position. Spool charger adjoins clutch assembly in the second position. Spool charger contains suction pipe removing any remained spool rod. Then spool charger charges equivalent spool from charging spool assembly to spool receiver before clutch assembly returns into position. In addition for sewing thick material, the needle is brought by needle carriage moving simultaneously with sewed material to support needle essentially in vertical position as being inside of sewed material.

EFFECT: possibility of sewing number of material layers with one or several stitch rows, as well as possibility of spool replacement in mid-seam.

28 cl, 21 dwg

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