Linear drawing equipment based on nickel-titanium wire production and processing

Abstract

This invention discloses a linear drawing device based on nickel-titanium wire production and processing, relating to the technical field of metal wire drawing equipment. It includes a frame, a drawing mechanism, a telescopic support assembly, and an end cover. The frame includes a drive motor and a drive chain. The drawing mechanism includes a transverse connector, a vertical telescopic frame, and a drawing head. The end cover includes a lubricating fluid tank containing a die base and a drawing die. The telescopic support assembly includes a guide frame and a positioning frame. By fixing the guide frame to the frame and allowing the positioning frame to slide synchronously with the drawing mechanism, the guide frame and positioning frame can expand and contract relative to each other during the drawing stroke. The support positions of the first guide wheel assembly and the second guide wheel assembly change accordingly. By ensuring that the first and second guide wheels maintain constant contact with the nickel-titanium wire, the sagging, swaying, and lateral displacement of the nickel-titanium wire during long-stroke traction can be reduced, and the wire can obtain continuous support between the drawing die and the drawing head.

Description

Technical Field

[0001] This invention relates to the field of metal wire drawing equipment technology, specifically a linear drawing equipment based on nickel-titanium wire production and processing. Background Technology

[0002] Nickel-titanium wire is a type of metal wire. In production and processing, it usually needs to go through a drawing process to obtain the corresponding wire diameter and surface condition. Linear drawing equipment generally includes a frame for supporting various components, a transmission mechanism for providing traction force, a drawing head for clamping the wire material head, a die base with a drawing die, and a lubrication structure. During operation, the drawing head clamps the wire material head and moves along the drawing direction, so that the wire material is reduced in diameter by passing through the drawing die.

[0003] The drawing head of a chain linear drawing machine usually has a long travel stroke. As the drawing head moves away from or nears the drawing die, the effective support length between the drawing die and the drawing head and the force position of the wire will change. If only a fixed guide is set on the frame, the guide is difficult to change its support position synchronously with the stroke of the drawing head. The wire may shift laterally or swing locally during the drawing process, which will cause the position of the wire entering the drawing die to change.

[0004] In addition, the position adjustment of the drawing head, the guiding constraint of the wire, and the die entry positioning at the die holder are usually completed by different components. If there is no follow-up coordination between the components, the relative relationship between the guide path and the drawing head is not easy to maintain when the position of the drawing head changes, which may increase the risk of uneven friction between the wire and the wire drawing die inlet.

[0005] To address this issue, we propose a linear drawing device based on nickel-titanium wire production and processing. Summary of the Invention

[0006] In view of this, and to address the shortcomings of the prior art, the present invention provides a linear drawing device based on nickel-titanium wire production and processing, in order to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a linear drawing device based on nickel-titanium wire production and processing, comprising a frame, a drawing mechanism, a telescopic support assembly, and an end cover. The frame includes a drive motor and a drive chain. The drawing mechanism includes a transverse connector, a vertical telescopic frame, and a drawing head. The end cover includes a lubricating fluid tank, within which a die base and a drawing die are provided. The telescopic support assembly includes a guide frame, a positioning frame, a first guide wheel assembly, and a second guide wheel assembly. The first guide wheel assembly includes a first guide wheel and a first guide groove. The second guide wheel assembly includes a second guide wheel and a second guide groove. The drive motor drives the drive chain. During operation, the drive chain directly pulls the drawing mechanism to reciprocate along the frame. The drawing head directly clamps the nickel-titanium wire head and pulls the nickel-titanium wire through the drawing die. The guide frame is fixed to the frame, and the positioning frame is slidably set on the frame and moves synchronously with the drawing mechanism. The first guide wheel assembly is set on the guide frame, and the second guide wheel assembly is set on the positioning frame. The first guide wheel and the second guide wheel are spaced apart along the nickel-titanium wire drawing direction and are in normal contact with the nickel-titanium wire. The drawing head cooperates with the first guide groove and the second guide groove respectively. The vertical telescopic frame adjusts the position of the drawing head, so that the positioning frame extends and retracts relative to the guide frame, and the first guide wheel and the second guide wheel limit the deviation of the nickel-titanium wire.

[0008] Preferably, the frame further includes a drive shaft and drive sprockets, with the drive sprockets located at both ends of the drive shaft, driving the drive chain to rotate the drive shaft so that the drive sprockets rotate synchronously.

[0009] Preferably, the telescopic support assembly further includes a connector, a first guide wheel bracket, and a second guide wheel bracket. The connector connects the guide frame and the positioning frame. The first guide wheel bracket is disposed on the guide frame, and the second guide wheel bracket is disposed on the positioning frame. The first guide wheel assembly is mounted on the first guide wheel bracket, and the second guide wheel assembly is mounted on the second guide wheel bracket.

[0010] Preferably, the first guide wheel assembly further includes an upper connecting rod, which is disposed on the first guide wheel bracket, and the first guide wheel is rotatably disposed on the upper connecting rod.

[0011] Preferably, the second guide wheel assembly further includes a limiting rod, and the limiting rod, the second guide wheel, and the second guide groove are disposed on the second guide wheel bracket.

[0012] Preferably, the die base includes a limiting plate and a limiting groove, the limiting plate and the limiting groove cooperating to limit the position of the nickel-titanium wire entering the drawing die.

[0013] Preferably, the transverse connector extends laterally, the vertical telescopic frame is vertically positioned on the transverse connector, and the pull head is connected to the telescopic end of the vertical telescopic frame.

[0014] Preferably, the two sides of the pulling head are respectively engaged with the first guide groove and the second guide groove, and the pulling head is guided by the first guide groove and the second guide groove when it moves under the drive of the vertical telescopic frame.

[0015] Preferably, the first guide wheel is rotatably mounted on the first guide wheel bracket, and the second guide wheel is rotatably mounted on the second guide wheel bracket. The first guide wheel and the second guide wheel remain in contact with the nickel-titanium wire during the movement of the drawing mechanism.

[0016] Preferably, the drive motor is a reversible motor. When the drive motor rotates forward, it drives the pulling mechanism to perform pulling movement. When the drive motor rotates in reverse, it pulls the pulling mechanism back to its original position by driving the drive chain.

[0017] Compared with the prior art, the present invention provides a linear drawing device based on nickel-titanium wire production and processing, which has the following beneficial effects: By fixing the guide frame to the frame and making the positioning frame slide synchronously with the drawing mechanism, the guide frame and the positioning frame can expand and contract relative to each other with the drawing stroke. The support positions of the first guide wheel assembly and the second guide wheel assembly change accordingly. With the first guide wheel and the second guide wheel maintaining normal contact with the nickel-titanium wire, the sagging, swinging and lateral displacement of the nickel-titanium wire during long-stroke traction can be reduced, and the wire can obtain continuous support between the drawing die and the drawing head.

[0018] By cooperating with the first guide groove and the second guide groove, and adjusting the position of the pull head by the vertical telescopic frame, the position of the pull head can be adapted to the guide path formed by the double guide wheels. This avoids excessive differences between the traction direction and the guide position after the position of the pull head changes, which helps to maintain the stability of the force path of the nickel-titanium wire and reduces the impact of the position change of the pull head on the wire's guiding state.

[0019] By setting a die base and a drawing die in the lubrication tank, and using a limiting plate and a limiting slide to limit the entry position of the nickel-titanium wire, the wire can be positioned before drawing and lubrication conditions can be provided during the drawing process, reducing the dry friction between the wire and the drawing die and maintaining the wire feeding stability at the entrance of the drawing die.

[0020] The fixed guide frame is connected to the sliding positioning frame by a connector, and the first guide wheel bracket and the second guide wheel bracket respectively support the two sets of guide wheel assemblies. With the help of the limiting rod, the movement range of the second guide wheel assembly is limited, so that the double guide wheels can maintain a relatively stable support relationship during the reciprocating pulling process, reducing the possibility of guide path instability caused by excessive relative displacement of the support components. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0022] Figure 2 This is a schematic diagram of the overall structure from another perspective of the present invention.

[0023] Figure 3 This is a partial structural diagram of the end cover and telescopic support assembly of the present invention.

[0024] Figure 4 This is a partial structural diagram of the present invention.

[0025] Figure 5 for Figure 4 A magnified structural diagram of point A in the middle.

[0026] Figure 6 This is a schematic diagram of the telescopic support assembly of the present invention.

[0027] Figure 7 This is a top view of the telescopic support assembly of the present invention.

[0028] In the diagram: 11. Frame; 12. Drive motor; 13. Drive chain; 14. Drive shaft; 15. Drive sprocket; 2. Pulling mechanism; 21. Horizontal connector; 22. Vertical telescopic frame; 23. Pulling head; 4. Telescopic support assembly; 41. Guide frame; 42. First guide wheel bracket; 43. First guide wheel assembly; 431. Upper connecting rod; 432. First guide wheel; 433. First guide groove; 44. Connector; 45. Positioning frame; 46. Second guide wheel bracket; 47. Second guide wheel assembly; 471. Limiting rod; 472. Second guide wheel; 473. Second guide groove; 5. End cover; 51. Lubricating fluid tank; 52. Mold base; 53. Limiting plate; 54. Limiting slide. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] Embodiments of the present invention Reference Figure 1 and Figure 2This embodiment of a linear drawing device based on nickel-titanium wire production and processing includes a frame 11, a drawing mechanism 2, a telescopic support assembly 4, and an end cover 5. The frame 11 extends along the nickel-titanium wire drawing direction and serves as the mounting base for each component. The end cover 5 is located at one end of the frame 11. The drawing mechanism 2 is located within the drawing stroke of the frame 11. The telescopic support assembly 4 is located at the nickel-titanium wire running path between the drawing mechanism 2 and the end cover 5, so that the nickel-titanium wire is guided by the telescopic support assembly 4 after passing through the drawing die in the end cover 5, and is pulled by the drawing mechanism 2 to complete the drawing.

[0031] The frame 11 is equipped with a drive motor 12, a drive chain 13, a drive shaft 14, and drive sprockets 15. The drive shaft 14 is rotatably mounted on the frame 11 with conventional bearings. The two drive sprockets 15 are fixed to the two ends of the drive shaft 14 and form a transmission engagement with the drive chain 13. The pulling mechanism 2 is connected to the traction part of the drive chain 13. The drive motor 12 is a reversible motor. When the drive motor 12 rotates forward, the drive chain 13 runs, and the drive chain 13 drives the drive shaft 14 to rotate and makes the two drive sprockets 15 rotate synchronously. This causes the drive chain 13 to pull the pulling mechanism 2 along the frame 11. When the drive motor 12 rotates in reverse, the drive chain 13 drives the pulling mechanism 2 to return in the opposite direction. The drive shaft 14, drive sprockets 15, and drive chain 13 all adopt conventional chain drive engagement to ensure the continuity of movement of the pulling mechanism 2 in the pulling stroke and the return stroke.

[0032] The drawing mechanism 2 includes a transverse connector 21, a vertical telescopic frame 22, and a drawing head 23. The transverse connector 21 is arranged horizontally and serves as the mounting connection part of the vertical telescopic frame 22. The vertical telescopic frame 22 is arranged vertically on the transverse connector 21. The drawing head 23 is connected to the telescopic end of the vertical telescopic frame 22. The drawing head 23 is a clamp for holding the nickel-titanium wire head. After the nickel-titanium wire head is clamped in the drawing head 23, the traction force transmitted by the drive chain 13 through the drawing mechanism 2 acts on the nickel-titanium wire. The vertical telescopic frame 22 changes the position of the drawing head 23 by telescopic movement so that the drawing head 23 is adapted to the guiding position of the nickel-titanium wire.

[0033] Reference Figures 3 to 5 A lubricating fluid groove 51 is formed inside the end cover 5. A mold base 52 is set inside the lubricating fluid groove 51. The wire drawing die is installed inside the mold base 52. A limiting plate 53 and a limiting slide 54 are set on the mold base 52. The limiting plate 53 and the limiting slide 54 cooperate to keep the limiting plate 53 in a limited position relative to the mold base 52. When the nickel-titanium wire enters from the lubricating fluid groove 51 and passes through the wire drawing die, the limiting plate 53 and the limiting slide 54 constrain its entry position. The lubricating fluid in the lubricating fluid groove 51 acts on the wire drawing die and the passage part of the nickel-titanium wire to reduce the frictional impact when the nickel-titanium wire enters the wire drawing die. The wire drawing die is not assigned an independent number but serves as a functional component inside the mold base 52.

[0034] Reference Figure 6 and Figure 7 The telescopic support assembly 4 includes a guide frame 41, a first guide wheel bracket 42, a first guide wheel assembly 43, a connector 44, a positioning frame 45, a second guide wheel bracket 46, and a second guide wheel assembly 47. The guide frame 41 is fixed to the frame 11 and provides a relatively fixed support reference. The positioning frame 45 is slidably arranged along the length direction of the frame 11. The connector 44 connects the guide frame 41 and the positioning frame 45, so that the positioning frame 45 maintains the connection relationship with the guide frame 41 when it moves relative to the guide frame 41. The first guide wheel bracket 42 is arranged on the guide frame 41, and the second guide wheel bracket 46 is arranged on the positioning frame 45. The positioning frame 45 can be used to cooperate with the frame 11 using a conventional sliding pair. When the pulling mechanism 2 moves, it moves synchronously with the pulling mechanism 2, thereby forming a telescopic support area between the guide frame 41 and the positioning frame 45 that can change with the pulling stroke.

[0035] The first guide wheel assembly 43 is mounted on the first guide wheel bracket 42. The first guide wheel assembly 43 includes an upper connecting rod 431, a first guide wheel 432, and a first guide groove 433. The upper connecting rod 431 is disposed on the first guide wheel bracket 42, and the first guide wheel 432 is rotatably disposed on the upper connecting rod 431. The second guide wheel assembly 47 is mounted on the second guide wheel bracket 46. The second guide wheel assembly 47 includes a limiting rod 471, a second guide wheel 472, and a second guide groove 473. The limiting rod 471, the second guide wheel 472, and the second guide groove 473 are disposed on the second guide wheel bracket 46. The limiting rod 471 is used to limit the range of motion of the second guide wheel assembly 47 at the corresponding position. The first guide wheel 432 and the second guide wheel 472 are arranged at intervals along the nickel-titanium wire drawing direction and form a rolling guide for the nickel-titanium wire through a corresponding rotatable connection.

[0036] The two sides of the drawing head 23 are respectively engaged with the first guide groove 433 and the second guide groove 473. When the vertical telescopic frame 22 adjusts the position of the drawing head 23, the first guide groove 433 and the second guide groove 473 guide the relative position of the drawing head 23. The first guide wheel 432 and the second guide wheel 472 maintain normal contact with the nickel-titanium wire. When the positioning frame 45 moves synchronously with the drawing mechanism 2, the guide frame 41 remains fixed. The connector 44 keeps the guide frame 41 connected to the positioning frame 45. The first guide wheel assembly 43 and the second guide wheel assembly 47 change their support positions with the displacement of the positioning frame 45 relative to the guide frame 41, so that the nickel-titanium wire is still guided and limited during the change of the position of the drawing head 23, reducing the possibility of the wire deviating outside the drawing direction.

[0037] In the actual drawing and reset cycle, the nickel-titanium wire head is first introduced into the drawing die in the die holder 52 through the lubricating fluid tank 51, and the die entry position is determined by the limiting plate 53 and the limiting slide 54. Then, the nickel-titanium wire passes through the first guide wheel 432 and the second guide wheel 472 in sequence and is clamped in the drawing head 23. After the drive motor 12 rotates forward, the drive chain 13 drives the transmission shaft 14 and the transmission sprocket 15 to run synchronously, and pulls the drawing mechanism 2 to move along the frame 11. The drawing head 23 transmits the traction force to the nickel-titanium wire, so that the nickel-titanium wire passes through the drawing die in a lubricated state. During this process, the positioning frame... The guide frame 41, which is relatively fixed as the pulling mechanism 2 moves, expands and contracts. The first guide wheel 432 and the second guide wheel 472 continuously support and restrict the nickel-titanium wire. The pulling head 23 moves in coordination with the first guide groove 433 and the second guide groove 473 under the adjustment of the vertical telescopic frame 22, so that the position of the pulling head 23 is adapted to the guide path formed by the double guide wheels. After a single pulling is completed, the drive motor 12 reverses and the drive chain 13 pulls the pulling mechanism 2 to reset, thereby completing a complete work cycle including die positioning, guide support, traction pulling and reverse reset.

[0038] The overall working process and principle of the above embodiments are as follows: When the equipment is in its initial state, the drawing mechanism 2 is located on the side near the end cover 5, the drive motor 12 is in a stopped state, the positioning frame 45 and the drawing mechanism 2 are in the corresponding initial relative positions, the guide frame 41 is kept fixed, the operator leads out the nickel-titanium wire head in sequence through the lubricating oil tank 51, the drawing die in the die base 52, the first guide wheel 432 and the second guide wheel 472 and clamps it in the drawing head 23. The limiting plate 53 and the limiting slide 54 cooperate to limit the entry position of the nickel-titanium wire into the die. The first guide wheel 432 and the second guide wheel 472 are in normal contact with the nickel-titanium wire. The vertical telescopic frame 22 adjusts the position of the drawing head 23 so that the two sides of the drawing head 23 are in cooperation with the first guide groove 433 and the second guide groove 473 respectively, thereby forming a restricted guide path from the die base 52 to the drawing head 23 before the drawing begins.

[0039] During the drawing process, the drive motor 12 rotates forward, driving the chain 13 to run and drive the transmission shaft 14 to rotate. The transmission sprockets 15 at both ends of the transmission shaft 14 rotate synchronously. The traction part of the drive chain 13 drives the drawing mechanism 2 to move along the drawing direction of the frame 11. The drawing head 23 transmits the traction force provided by the chain drive to the nickel-titanium wire, so that the nickel-titanium wire passes through the drawing die under the lubrication conditions provided by the lubricating fluid tank 51. As the drawing mechanism 2 moves, the positioning frame 45 slides synchronously along the frame 11, while the guide frame 41 remains fixed. The connecting piece 44 keeps the guide frame 41 and the positioning frame 45 connected. The relative position between the two changes with the drawing stroke. The first guide wheel assembly 43 and the second guide wheel assembly 47 change the support position of the nickel-titanium wire accordingly, so that the nickel-titanium wire is continuously guided during the change of the effective support length.

[0040] While the positioning frame 45 moves synchronously, the first guide wheel 432 and the second guide wheel 472 bear and disperse the lateral offset tendency of the nickel-titanium wire through rolling contact with it. The first guide groove 433 and the second guide groove 473 guide the relative position of the drawing head 23. The vertical telescopic frame 22 adjusts the position of the drawing head 23 according to the relative change between the drawing head 23 and the guide position of the nickel-titanium wire, so that the guide path formed by the drawing head 23, the first guide wheel 432 and the second guide wheel 472 remains mutually adapted. The limiting rod 471 restricts the relative movement range of the second guide wheel assembly 47, thereby avoiding large lateral offset of the nickel-titanium wire when the position of the drawing head 23 changes and reducing the possibility of it rubbing against the wire drawing die inlet.

[0041] After a single pull is completed, the drive motor 12 reverses, the drive chain 13 drives the transmission shaft 14 and the transmission sprocket 15 to rotate in the opposite direction, and pulls the pull mechanism 2 back to the initial position. The positioning frame 45 slides in the opposite direction with the pull mechanism 2 and returns to the initial relative position with the guide frame 41. The first guide wheel 432 and the second guide wheel 472 still maintain the guiding state of the nickel-titanium wire. After the pull mechanism 2 is reset, the next section of nickel-titanium wire can be clamped again or the next pull can be performed, thus completing a pull cycle consisting of die positioning, guide support, chain traction and reverse reset.

[0042] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0043] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A linear drawing device based on nickel-titanium wire production and processing, comprising a frame (11), a drawing mechanism (2), a telescopic support assembly (4), and an end cover (5), characterized in that, The frame (11) includes a drive motor (12) and a drive chain (13). The drawing mechanism (2) includes a transverse connector (21), a vertical telescopic frame (22), and a drawing head (23). The end cover (5) includes a lubricating fluid tank (51). The lubricating fluid tank (51) is provided with a die base (52) and a drawing die. The telescopic support assembly (4) includes a guide frame (41), a positioning frame (45), a first guide wheel assembly (43), and a second guide wheel assembly (47). The first guide wheel assembly (43) includes a first guide wheel (432) and a first guide groove (433). The second guide wheel assembly (47) includes a second guide wheel (472) and a second guide groove (47). Guide chute (473), the drive motor drives the drive chain to run, the drive chain directly pulls the drawing mechanism to move back and forth along the frame, the drawing head directly clamps the nickel-titanium wire head and pulls the nickel-titanium wire through the drawing die, the guide frame is fixed to the frame, the positioning frame is slidably set on the frame and moves synchronously with the drawing mechanism, the first guide wheel assembly is set on the guide frame, the second guide wheel assembly is set on the positioning frame, the first guide wheel and the second guide wheel are spaced apart along the nickel-titanium wire drawing direction and are in normal contact with the nickel-titanium wire, the drawing head cooperates with the first guide chute and the second guide chute respectively, the vertical telescopic frame adjusts the position of the drawing head so that the positioning frame extends and retracts relative to the guide frame, and the first guide wheel and the second guide wheel limit the offset of the nickel-titanium wire.

2. The linear drawing equipment based on nickel-titanium wire production and processing according to claim 1, characterized in that, The frame (11) also includes a drive shaft (14) and a drive sprocket (15). The drive sprocket (15) is located at both ends of the drive shaft (14). The drive chain (13) drives the drive shaft (14) to rotate so that the drive sprocket (15) rotates synchronously.

3. The linear drawing equipment based on nickel-titanium wire production and processing according to claim 1, characterized in that, The telescopic support assembly (4) further includes a connector (44), a first guide wheel bracket (42), and a second guide wheel bracket (46). The connector (44) connects the guide frame (41) and the positioning frame (45). The first guide wheel bracket (42) is disposed on the guide frame (41), and the second guide wheel bracket (46) is disposed on the positioning frame (45). The first guide wheel assembly (43) is installed on the first guide wheel bracket (42), and the second guide wheel assembly (47) is installed on the second guide wheel bracket (46).

4. A linear drawing device based on nickel-titanium wire production and processing according to claim 3, characterized in that, The first guide wheel assembly (43) further includes an upper connecting rod (431), which is disposed on the first guide wheel bracket (42), and the first guide wheel (432) is rotatably disposed on the upper connecting rod (431).

5. A linear drawing device based on nickel-titanium wire production and processing according to claim 3, characterized in that, The second guide wheel assembly (47) also includes a limiting rod (471), the limiting rod (471), the second guide wheel (472) and the second guide groove (473) are disposed on the second guide wheel bracket (46).

6. A linear drawing device based on nickel-titanium wire production and processing according to claim 1, characterized in that, The mold base (52) includes a limiting plate (53) and a limiting groove (54). The limiting plate (53) cooperates with the limiting groove (54) to limit the position of the nickel-titanium wire entering the drawing die.

7. A linear drawing device based on nickel-titanium wire production and processing according to claim 1, characterized in that, The horizontal connector (21) extends horizontally, the vertical telescopic frame (22) is vertically arranged on the horizontal connector (21), and the pull head (23) is connected to the telescopic end of the vertical telescopic frame (22).

8. A linear drawing device based on nickel-titanium wire production and processing according to claim 1, characterized in that, The two sides of the pull head (23) are respectively engaged with the first guide groove (433) and the second guide groove (473). When the pull head (23) moves under the drive of the vertical telescopic frame (22), it is guided by the first guide groove (433) and the second guide groove (473).

9. A linear drawing device based on nickel-titanium wire production and processing according to claim 3, characterized in that, The first guide wheel (432) is rotatably mounted on the first guide wheel bracket (42), and the second guide wheel (472) is rotatably mounted on the second guide wheel bracket (46). The first guide wheel (432) and the second guide wheel (472) remain in contact with the nickel-titanium wire during the movement of the pulling mechanism (2).

10. A linear drawing device based on nickel-titanium wire production and processing according to claim 1, characterized in that, The drive motor (12) is a reversible motor. When the drive motor (12) rotates forward, it drives the pulling mechanism (2) to perform pulling movement. When the drive motor (12) rotates in reverse, it pulls the pulling mechanism (2) to reset through the drive chain (13).

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