Drawing bench

FIELD: drawing processes and equipment, namely manufacture of hardware for making wire by drawing.

SUBSTANCE: drawing bench includes housing; arranged in it traction drum with reversing drive; two driven reversing unwinding-winding units with bobbins and draw plate holder. According to invention axes of unwinding-winding units are parallel to axis of traction drum and they are shifted relative to it for providing possibility for crossing by angle 60 - 120° wire branch climbing on drum and wire branch descending from it. Draw plate holder is in the form of tie rod with two rows of seats crossing in pairs by angle 60 - 120° in its cross section. In said seats along their axes draw plates are placed. Tie rod is mounted with possibility of moving on guides in parallel to drum axis and it is provided with means for fixing it in working positions corresponding to alternating matching of axes of draw plates with climbing wire branch. Between said seats in each row there are parallel to seat through openings for descending wire branch.

EFFECT: improved design providing combined in one unit function of draw plate holder and mechanism for automatically changing draw plates.

4 cl, 2 dwg

 

The invention relates to the field of drawing and can be used in the manufacture of fasteners for wire production method of drawing.

Known wire drawing mill, containing a traction drum, unwinding and winding units with coils of wire and volontargatan with tool - Molokai (see "Guide wire drawer" can BE Gorlovka and others, Moscow, metallurgy, 1993, s-178).

The disadvantage of this mill is that when performing multi-pass processing of the wire after each passage, you must rearrange (rearrange) empty and full coil, and change portages. This increases the auxiliary processing time and requires manual labor. In addition, these countries due to the linear arrangement of the nodes have a large size in length, which increases the required production area.

Known wire drawing mill, comprising a housing, placed in it the traction drum reversible drive two driven reversible unwinding-winding unit with coils and volontargatan (see SU 1782684 A1. 23.12.1992).

In this known rolling mill drives the drum and unwinding-unwinding of nodes is made reversible, which to some extent reduces required for drawing equipment production area, however, this construction when osuwestvlenieaj.in drawing requires repeated permutations of the coils and change fiber, what complicates the process of drawing and increases its duration.

The objective of the invention is to increase the processability of the drawing equipment, reduce production area required for its placement, as well as to reduce the auxiliary time required for the implementation of multi-pass drawing.

The task is solved in that drawing machine, comprising a housing, placed in it the traction drum reversible drive two driven reversible unwinding-winding unit with coils and volontargatan, in accordance with the invention, the axis of unwinding-winding assemblies are installed parallel to the axis of the traction drum and offset it with the possibility of a crossing angle of 60 to 120° rolling the drum with cascading branches of the wire, volontargatan made in the form of a rod with two rows of nests, pairs intersecting at an angle of 60-120° in its cross-section, placed in them portages, if this rod is mounted for movement along the guide rails parallel to the axis of the traction drum and has a means of fixing the working position, corresponding to alternate alignment of the axes of the fiber with a forced branch wire, and between the slots in each row is made parallel slots through holes for saving the surrounding branches of the wire.

In addition, the rod may have a drive movement.

The drive movement of the rod may be made in the form of built in RAM.

Means for fixing the rod may be made in the form of release that is installed with the opportunity to interact with the nest drawing dies, next working Molokai.

In the claimed design drawing of the rod mill performs the functions of the store fiber and volontariats for working drawing dies. One series of slots contains drawing dies used for drawing in the forward direction, the second row is for drawing in the opposite direction.

The execution of volontariats in the form of a rod above-described construction, provided the elements of the drawing mill with the possibility of a crossing angle of 60 to 120° rolling the drum with cascading branches of the wire, allows for multi-pass wire drawing in a single mill without swapping the coils in the reverse mode with automatic change of fiber.

This allows the process multipass drawing high-tech mode, the minimum required production space, with minimal auxiliary time for its implementation.

Proposed equipment layout drawing of the mill with the provision of a crossing branches ol the portages at an angle of 60° -120° has two advantages:

1) allows, by integrating rod with cross branches, to perform the mechanism of change fiber in a single node, since any other arrangement would have to introduce two mechanisms for changing tracks - one for each branch, which would significantly complicate the design of the mill.

2) can further reduce the size of mill length and occupied area.

The range of angles of crossing branches of the wire is installed in the conduct experimental tests of the drawing mill and is optimal from the point of view of the stability of the process performing multi-pass drawing and mechanical properties of the resulting product.

The range of angles of crossing nests (axes) placed in them, coaxially with them, portages must match the range of angles of crossing branches of the wire to allow alternate alignment of the axes of the fiber with a forced branch wire and respectively the axes of the through holes is eloping branch wire. With different ranges of angles of crossing branches of the wire and the axes of the sockets (that is, the axes of the fiber) of a possible break in the wire, resulting in uneven wear of the fiber and the deterioration of wire. The drive movement of the rod may be made in the form, for example, built-in rod hydraulic cylinder, and DL is the commit (indexing) in the working position can be used clamp, contact with the socket, drawing dies, the next in operation. This solution simplifies the design of the mill, because it eliminates the need for a separate housing in the cylinder and in carrying on the rod special nests for the release.

We offer wire drawing mill is illustrated in the drawings, which shows:

figure 1 is a - front view;

figure 2 - top view;

figure 3, 4 - sections a-a and b-B of the rod.

In case 1 installed: shaft 2 is rigidly mounted thereon a traction drum 3 and reverse drive (not shown); the shafts 4 and 5 attached to them by the coils 6 and 7 for the processing of wire, kinematically connected with the drive of the traction drum 3. Each shaft 4, and 5 provided with a clutch coupling (not shown) to enable or disable rotation, and a friction brake (not shown) to create a tension of coiled wire. Incident 8 on the drum and ran 9 drum branches of the processed wire cross at an angle βwithin the 60°-120°and are within the cross section of the rod 10. The latter is installed in the housing 1 in the guide Bush 11 and can be moved parallel to the axis of the traction drum 3 from the cylinder 12, the piston rod 13 which is rigidly fixed in the housing 1. The rod 10 has two rows of slots 14 with the dies 15, 16, and the axis of the jacks and fiber pairwise overlap subtopics same angle that incident 8 and 9 cascading branches of the processed wire. In each row axis nests (and fiber) coincide with the incident in this passage branch processed wire. In addition, between the slots 14 in each row bar is made through holes 17, 18 parallel to the axes of the fiber used to pass down the branches of the wire. The housing 1 is rigidly secured housing 19 with the spring loaded clamp 20 mounted so that when a pair of tracks 15, 16 in the working position of his teeth in contact with the socket, the subsequent drawing dies and indexes (captures) the rod 10. Coils 6 and 7 in the process can move along the axes of the shafts 4 and 5 from the special mechanisms (not shown). This movement of the coils synchronized with their rotation and ensures a constant position of coiled and spooled branches of the wire in the horizontal plane, which in turn increases the winding quality and reliability of the camp.

The work described mill is as follows.

In the initial position the coil 6 to be processed wire set, for example, on the shaft 4, and the empty coil 7 on the shaft 5 (Fig 1). The shaft 4 that performs this transition function node roll-out of its clutch coupling is disconnected from the actuator rotation and braking clutch is enabled and generates a braking torque to maintain the tension of coiled the th wire. The shaft 5 that performs this transition function node winding, on the contrary, is connected to the rotational drive, and braking clutch is disabled.

The rod 10 is fixed by a clamp 20 in the extreme retracted position, the first technology fiber pair 15, 16 is in the working position, i.e. their axes are lines tangent to the working bucket traction drum. Pre-tipped processed wire passes through the fibrous 15 and fixed on the traction drum 3. Then include the rotational drive of the drum 3 in the clockwise direction (see figure 1) and begin the process of drawing. When this wire with a force determined by the adjustment of the brake clutch, leaves the coil 6 and passing through the working rummaging 15 wound on the traction drum 3, working the fillet which constantly shifts wound coils along the axis of the drum to its open end.

At this time, the shaft 5 with the receiving coil 7 rotates idle. After winding the first 8÷10 turns of rotation of the traction drum is stopped, the previously clamped in him the sharp end of the wire choose to unpin it and, after passing it through a through hole 17 in the rod 10, fixed on the empty reel 7.

Then include the rotation of the traction drum 3 in the same direction - clockwise and make a drawing of all remaining wire. When this wire is Chennai wire wound on the spool 7, the rotation is communicated through the shaft 5 from the drive of the traction drum. The accumulation of wire diameter of the winding increases and to avoid breakages coupling clutch in the drive shaft 5 is configured so that secures the effort of winding of the wire, and when it exceeds this value - slips. In the process, the coil 7 is continuously moved on the shaft 5 from one extreme position to the other and back, providing high-quality winding turns (tight, but without overlap).

The first transition - drawing through the 1st rummaging 15 - ends after full winding wire coil 6, passing her rummaging through the winding of the coil 7. After that, the rotation of the traction drum stop and make the operation of sharpening the rear end of the wound on the spool 7 wire. Then, after passing it through the 2nd rummaging 16 and securing the traction drum 3, include the rotation of the latter in the opposite direction (counterclockwise) and produce a drawing of 8 to 10 turns. The shaft 5 with the coil 7 performs the function of unwinding, and the shaft 4 with the coil 6 is wound. Further, by stopping the drum 3 and by unsnapping the end of the wire, put it in the hole 18 of the rod 10 and is fixed in the coil 6, produce a drawing of the remaining wire.

Before performing the next 3-year cycle transition is made automatic shift plate. For this work the first fluid is supplied into the piston cylinder chamber 12, whereupon the rod 10 is moved, squeezing the latch 20 from the slot portages. As soon as the rod moves to the next working position, the tooth of the latch 20 under the action of the spring falls into the next slot of the rod, thus actuates limit switch (not shown), the working fluid is supplied into the rod cavity of the hydraulic cylinder 12 and the rod 10 is moved until it engages in the tooth retainer. Thus, in the working position, you enter the following fiber pair and the next pair of holes for the passage running from the drum of the branches of the wire. The process is repeated until the execution of the drawing through all portages technology.

Drawing camp of the proposed design eliminates the need for manual work associated with the removal and relocation of the coils, with the replacement of the fiber. The process multipass drawing on this high-tech equipment by combining the functions of volontariats and automatic shift plate in one constructive element that can significantly reduce the auxiliary time required for the implementation of multi-pass drawing, and also reduce the production area required for placement.

1. Drawing mill, comprising a housing, placed in it the traction drum reversible drive two driven reversible unwinding-winding unit with Tuscany and volontargatan, characterized in that the axis of unwinding-winding assemblies are installed parallel to the axis of the traction drum and offset it with the possibility of a crossing angle of 60 to 120° rolling the drum with cascading branches of the wire, volontargatan made in the form of a rod with two rows of nests, pairs intersecting at an angle of 60-120° in its cross-section, placed in them by portages, if this rod is mounted for movement along the guide rails parallel to the axis of the traction drum and has a means of fixing the working position, corresponding to alternate alignment of the axes of the fiber with a forced branch wire and between the slots in each row is made parallel slots through holes for cascading branches of the wire.

2. The mill according to claim 1, characterized in that the rod has the drive movement.

3. The mill according to claim 2, characterized in that the drive movement of the rod is made in the form of built in RAM.

4. The mill according to claim 1, characterized in that the means for fixing the rod is made in the form of a clamp that is installed with the opportunity to interact with the nest drawing dies, next working Molokai.



 

Same patents:

Drawing bench // 2270071

FIELD: drawing processes and equipment, namely manufacture of hardware for making wire by drawing.

SUBSTANCE: drawing bench includes housing; arranged in it traction drum with reversing drive; two driven reversing unwinding-winding units with bobbins and draw plate holder. According to invention axes of unwinding-winding units are parallel to axis of traction drum and they are shifted relative to it for providing possibility for crossing by angle 60 - 120° wire branch climbing on drum and wire branch descending from it. Draw plate holder is in the form of tie rod with two rows of seats crossing in pairs by angle 60 - 120° in its cross section. In said seats along their axes draw plates are placed. Tie rod is mounted with possibility of moving on guides in parallel to drum axis and it is provided with means for fixing it in working positions corresponding to alternating matching of axes of draw plates with climbing wire branch. Between said seats in each row there are parallel to seat through openings for descending wire branch.

EFFECT: improved design providing combined in one unit function of draw plate holder and mechanism for automatically changing draw plates.

4 cl, 2 dwg

FIELD: plastic metal working, possibly manufacture of different types of tubes.

SUBSTANCE: apparatus includes draw plate holder in the form of rod with through cavity for mounting draw plate; source of radial ultrasonic oscillations secured to draw plate holder and embracing draw plate. Apparatus is also provided with second source of radial ultrasonic oscillations secured to outer surface of draw plate holder and with second draw plate mounted in cavity of draw plate holder on the same axis as first draw plate. Length of draw plate holder consists of 0.2 -0.45 of length of longitudinal ultrasound wave inside its material. Draw plate holder includes two mutually joined cone portions. Length of source of ultrasonic oscillations consists of 14 - 40% of draw plate holder length. Both draw plates are mounted in such a way that distance between their centers consists of 0.057 - 0.154 of length of longitudinal ultrasound wave in material of holder. Working surface of each source of ultrasonic oscillations has conicity degree corresponding to conicity of outer surface of draw plate holder and it is normalized by means of given mathematical relation. Invention lowers risk of tube rupture due to stabilized drawing effort at stable mode of drawing that is achieved in the result of providing resonance frequency band of apparatus and lowered number of frequency errors for each source of ultrasonic oscillations.

EFFECT: increased yield of apparatus.

7 cl, 4 dwg, 2 ex

Drawing machine // 2385195

FIELD: process engineering.

SUBSTANCE: die-head blocks (1) with drawing dies (2) are mounted along the feed of every wire (3). Pulsating lengthwise strains that reduce drawing friction result from making intermediate gear device consisting of drive crankshaft (5), rods (6) and two frames (7)moving in lengthwise direction and supporting clamps (8) that grip wise in feed direction and let it pass in back direction, and generate pulsating lengthwise strains in said wire two times per one crankshaft revolution. At the same time, load on drum (4) is reduced, said drum making the main drive member of drawing machine.

EFFECT: simplified design.

2 cl, 1 dwg

Intermediate drive // 2385196

FIELD: process engineering.

SUBSTANCE: proposed device comprises two sets of drive elements, arranged at regular intervals so that elements of one set face gaps between elements of another set. Pulsating lengthwise strains in wire are generated per one revolution of the drive thanks to that the base moving lengthwise accommodates the first set of said drive elements and bell crank hinged thereto. Second set of drive elements is arranged on first arm of bell crank. Second arm of said bell crank is furnished with inertia load and arranged across feed direction so that delay of inertia element fitted thereon, when drive elements move in feed direction, makes sets of drive elements approach. Inertia element is arranged on second arm to move and be adjusted thereon. Above described drive of aforesaid sets of drive elements cab reciprocate.

EFFECT: simplified design.

3 dwg

FIELD: process engineering.

SUBSTANCE: invention relates to metal forming and may be used in making semis or rods and wire with ultra fine structure. Proposed method comprises deformation of long metal by drawing via two aligned and fixed tape dies with extra shearing by simultaneous alternating bending and twisting about metal lengthwise axis. Note here that metal axial speed and that of its rotation in area between fibers are kept constant.

EFFECT: expanded processing performances, higher physical properties.

1 dwg, 1 tbl

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