Flat hook needle production device
Patent Information
- Application Number
- CN202522418974.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-13
- Publication Date
- 2026-10-30
- Estimated Expiration
- 2035-11-13
AI Technical Summary
[0004]在进行往复运动的过程中，冲压件的运动轨迹会发生偏移，这样会导致裁切出来的线材出现长短不一致的情况，而长短不一的线材在进行弯折形成最终工件时达不到加工要求，这样导致工件的良品率不高
1.本申请中设置有导向杆和导向块对冲压件的移动轨迹进行限定，在冲头在竖向方向进行移动的过程中，导向块上开设的滑槽与连接板的两侧壁相抵接，而导向杆的周侧壁则受到挡板上贯穿孔壁面的约束，使连接板的移动轨迹被限定，阻止连接板在运动过程中发生偏移，导致线材被冲裁得长短不一的可能性，能够较好地保障生产而出的工件的精度。
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Figure CN224913474U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of workpiece processing equipment technology, and in particular to a flat hook needle production device. Background Technology
[0002] In the production and use of flat crochet hooks, metal wire is continuously fed to the production device as raw material. The metal wire is cut and bent by the device to be processed into the specified shape. The production device mainly includes a worktable, stamping parts and bending parts, with the stamping parts and bending parts placed on the worktable.
[0003] In this process, the stamping part cuts the metal wire into wire segments, while the bending part bends the cut wire segments. During the cutting process of the stamping part, the metal wire is fed to the lower side of the stamping part, and the stamping part will continuously reciprocate in the vertical direction.
[0004] During the reciprocating motion, the movement trajectory of the stamped part will deviate, which will result in inconsistent lengths of the cut wires. When the wires of inconsistent lengths are bent to form the final workpiece, they will not meet the processing requirements, resulting in a low yield rate of the workpieces. Utility Model Content
[0005] This application provides a flat hook needle production apparatus that can improve the yield of workpieces.
[0006] The flat crochet needle production device provided in this application adopts the following technical solution: A flat crochet hook production apparatus includes a cutting assembly, a guiding assembly, and a limiting part for supporting the thread, all placed on the side of a workbench. The guiding assembly is connected to the cutting assembly and is used to limit the movement trajectory of the cutting assembly. The cutting assembly includes a stamping part placed on the top side of the limiting part and a bending part placed on the bottom side of the limiting part. Both the stamping part and the bending part are movable toward the limiting part. The stamping part includes a connecting plate and a punch for cutting wire. The punch is connected to the bottom side of the connecting plate. The guide assembly includes a vertically arranged guide rod and a guide block with a groove on its side wall. The connecting plate is inserted into the groove and slidably connected to the guide block. A baffle extends laterally from the side of the worktable. The guide rod passes through the baffle and is connected to the connecting plate.
[0007] By adopting the above technical solution, during the vertical movement of the punch, the groove on the guide block abuts against the two side walls of the connecting plate, while the peripheral side wall of the guide rod is constrained by the through hole wall on the baffle, thus limiting the movement trajectory of the connecting plate and preventing the connecting plate from shifting during the movement, which could lead to the possibility of the wire being punched to uneven lengths. This can better ensure the accuracy of the produced workpieces.
[0008] Optionally, it also includes a cam for driving the connecting plate to move. The top side of the connecting plate is detachably connected to a mating block with an arc-shaped end. The mating block abuts against the cam. A reset elastic element is sleeved on the guide rod, and a protruding edge is arranged around the side away from the connecting plate. The two ends of the reset elastic element act on the protruding edge and the baffle, respectively.
[0009] By adopting the above technical solution, during the rotation of the cam, it will press the mating block, causing the connecting plate and the guide rod to move vertically downward together, so as to realize the cutting and bending of the wire by the punch. At this time, the reset elastic element contracts, the cam continues to move, and the cam no longer presses the mating block. The elastic element extends, causing the punch to retract. The reset elastic element resets the punch.
[0010] Optionally, the bending member includes a first bending rod vertically disposed on the bottom side of the limiting part and two second bending rods respectively located on both sides of the first bending rod. The second bending rods are inclined and their output ends face the limiting part. Both the first bending rod and the second bending rod can move along their own length direction.
[0011] By adopting the above technical solution, the two second bending rods located on both sides of the first bending rod first move toward the limiting platform, further bending the wire segment whose ends have been bent vertically downward toward its own center. Then the second bending rods move backward, and the first bending rod moves toward the limiting platform, contacting the two ends of the wire segment and making the two ends of the wire segment fit against the bottom side of the limiting platform, thus completing the final bending.
[0012] Optionally, it also includes a connecting block for moving the second folding rod, wherein a connecting groove is provided on one end side wall of the connecting block, and the second folding rod is placed in the connecting groove and detachably connected to the connecting block.
[0013] By adopting the above technical solution, relevant personnel can produce workpieces of different specifications by replacing different models of the second bending rod, thus increasing versatility.
[0014] Optionally, the limiting part includes a first limiting block, a limiting platform, and a second limiting block arranged sequentially at intervals along the transverse direction on the worktable. The end of the punch is provided with a mating groove that mates with the limiting platform, and both sides of the punch are respectively attached to the side walls of the first limiting block and the second limiting block.
[0015] By adopting the above technical solution, during the downward movement of the punch, the wire segment will be bent by the limiting effect of the mating groove and the limiting table. The first limiting block and the second limiting block can also prevent the possibility of the punch's movement trajectory deviating when the punch cuts the wire.
[0016] Optionally, the limiting platform has guide wires extending laterally in a direction away from the worktable, and the side of the guide wires away from the worktable is bent downwards.
[0017] By adopting the above technical solution, after the wire segment is bent to form a workpiece, the workpiece is sleeved on the outer end of the limiting plate. Under the guidance of the guide wire, the workpiece moves along the bending direction of the guide wire to complete the unloading. By setting the guide wire, the workpiece is prevented from splashing everywhere during the unloading process.
[0018] Optionally, the top of the limiting platform is provided with a mounting block for mounting the first limiting block and the second limiting block. The mounting block has a mounting groove along its own length and a plurality of mounting holes on the inner wall of the mounting groove. The first limiting block and the second limiting block both have a protrusion that matches the mounting groove on the side of the platform that is close to the worktable. The protrusion can be inserted into the mounting groove and threaded into the mounting hole.
[0019] By adopting the above technical solution, after the assembly is completed, the side wall of the protrusion abuts against the groove wall of the mounting groove to limit the first and second limiting blocks. In addition, by inserting it into the mounting holes at different positions, the gap between the first and second limiting blocks can be adjusted to accommodate different types of punches.
[0020] Optionally, a lead tube for wires to pass through is provided on the side of the first limiting block away from the limiting platform. The lead tube is connected to the worktable. An avoidance hole for wires to pass through is provided on the first limiting block. The lead tube and the avoidance hole are coaxially arranged.
[0021] By adopting the above technical solution, the inner wall of the lead tube and the clearance hole can guide the wire and ensure that the wire remains straight during feeding.
[0022] Optionally, an arc-shaped groove is formed on the side of the second limiting block near the limiting platform.
[0023] By adopting the above technical solution, when the cutting component malfunctions and the wire is not cut by the stamping part, the wire will be guided by the arc groove and bend downwards, preventing the second limit block of the wire from causing continuous damage.
[0024] Optionally, the guiding assembly further includes multiple vertically staggered guide plates, which are sequentially connected to the workbench. Two sets of guide wheels are rotatably connected to the guide plates, which are arranged along the length of the guide plates. The two sets of guide wheels are fitted with a clearance and allow wires to pass through.
[0025] By adopting the above technical solution, and by setting up guide plates and guide wheel sets, the wire is constrained, ensuring that the wire can be continuously fed in a straight state.
[0026] In summary, this application includes at least one of the following beneficial technical effects: 1. In this application, a guide rod and a guide block are provided to limit the movement trajectory of the stamping part. During the vertical movement of the punch, the groove on the guide block abuts against the two side walls of the connecting plate, while the peripheral side wall of the guide rod is constrained by the through hole wall on the baffle, thus limiting the movement trajectory of the connecting plate and preventing the connecting plate from shifting during the movement, which could lead to the possibility of the wire being punched to uneven lengths. This can better ensure the accuracy of the produced workpiece.
[0027] 2. This application includes a reset elastic element to enable the punch to reciprocate in the vertical direction. During the rotation of the cam, it presses against the mating block, causing the connecting plate and guide rod to move vertically downward together, thereby enabling the punch to cut and bend the wire. At this time, the reset elastic element contracts, the cam continues to move, and the cam no longer presses against the mating block. The elastic element then extends, causing the punch to retract.
[0028] 3. In this application, a bending component is provided to further bend the wire segment. During bending, the two second bending rods located on both sides of the first bending rod first move toward the limiting platform, further bending the wire segment, which has already been bent vertically downwards at both ends, toward its own center. Then the second bending rods retract, and the first bending rod moves toward the limiting platform, contacting the two ends of the wire segment and making the two ends of the wire segment fit against the bottom side of the limiting platform, thus completing the final bending. Attached Figure Description
[0029] Figure 1 This is a three-dimensional structural schematic diagram of a flat crochet needle production device according to this application; Figure 2 This is a partial three-dimensional structural schematic diagram of a flat crochet needle production device according to this application; Figure 3 yes Figure 2 A magnified view of part A in the middle; Figure 4 This is a three-dimensional structural schematic diagram of another part of a flat crochet needle production device in this application.
[0030] In the picture, 1. Workbench; 2. Cutting assembly; 21. Stamping part; 211. Connecting plate; 212. Punch; 2121. Mating groove; 22. Bending part; 221. First bending rod; 2211. Protrusion; 222. Second bending rod; 3. Guide assembly; 31. Guide rod; 32. Guide block; 321. Slide groove; 33. Guide plate; 34. Guide wheel assembly; 341. Guide wheel; 342. Guide groove; 4. Limiting part; 41. First limiting block; 411. Clearance hole; 42. Limiting platform; 421. Limiting post; 422. Limiting plate; 4221. Ramp; 43. Second limiting block; 431. Arc groove; 44. Protrusion; 5. Connecting block; 51. Connecting groove; 6. Guide wire; 7. Mounting block; 71. Mounting groove; 72. Mounting hole; 8. Drive assembly; 81. Movable rod; 82. Movable block; 20. Baffle; 30. Cam; 40. Mating block; 50. Protruding edge; 60. Reset elastic element; 70. Lead tube; 80. Wire. Detailed Implementation
[0031] The following is in conjunction with the appendix Figure 1 - Appendix Figure 4 This application will be described in further detail below.
[0032] A flat crochet needle production device, as shown in the reference. Figure 1 and Figure 2 It includes a cutting component 2, a guide component 3, and a limiting part 4 for supporting wire 80, which are placed on the side of the workbench 1. The guide component 3 is connected to the cutting component 2 and is used to limit the movement trajectory of the cutting component 2. The cutting component 2 includes a stamping part 21 placed on the top side of the limiting part 4 and a bending part 22 placed on the bottom side of the limiting part 4. Both the stamping part 21 and the bending part 22 can move toward the limiting part 4. Reference Figure 2 and Figure 3 The stamping part 21 is used to cut the wire 80. It includes a connecting plate 211 and a punch 212 for cutting the wire 80. The punch 212 is detachably connected to the bottom side of the connecting plate 211 by bolts. When the wire 80 is pushed to the limiting part 4, the connecting plate 211 moves vertically downward, causing the punch 212 to move downward and cut the wire 80.
[0033] Furthermore, the limiting part 4 includes a first limiting block 41, a limiting platform 42, and a second limiting block 43 arranged sequentially and spaced apart on the worktable 1 in the horizontal direction. The limiting platform 42 mainly supports the wire 80, and the wire 80 is continuously fed to the limiting platform 42. The connecting plate 211 repeatedly reciprocates in the vertical direction to cut into equal-length wire segments 80. In addition, the punch 212 presses down on both ends of the wire segments 80 to initially bend the wire segments 80.
[0034] Furthermore, the two sides of the punch 212 abut against the side walls of the first limiting block 41 and the second limiting block 43 respectively, to prevent the possibility of the movement trajectory of the punch 212 deviating when the punch 212 cuts the wire 80. The two ends of the bottom side of the punch 212 have cutting edges for cutting the wire 80. The middle part of the bottom side of the punch 212 is provided with a matching groove 2121 that matches the limiting table 42. During the downward movement of the punch 212, the wire 80 segment will be bent by the limiting effect of the matching groove 2121 and the limiting table 42.
[0035] It should be noted that the wire 80 is fed from the side of the first limiting block 41 toward the direction close to the limiting platform 42.
[0036] In addition, combined Figure 3 The second limiting block 43 has an arc-shaped groove 431 on the side near the limiting platform 42. When the cutting component 2 malfunctions and the wire 80 is not cut by the stamping part 21, the wire 80 will be guided by the arc-shaped groove 431 and bend downwards, preventing the second limiting block 43 from causing continuous damage to the wire 80.
[0037] Reference Figure 2 The top of the limiting platform 42 is horizontally provided with a mounting block 7 for mounting the first limiting block 41 and the second limiting block 43. The mounting block 7 has a mounting groove 71 along its own length direction and a plurality of mounting holes 72 on the inner wall of the mounting groove 71. In addition, the first limiting block 41 and the second limiting block 43 have protrusions 44 that match the mounting groove 71 on the side close to the worktable 1. The protrusions 44 can be inserted into the mounting groove 71 and threadedly engaged with the mounting holes 72.
[0038] Once the engagement is complete, the side wall of the protrusion 44 abuts against the groove wall of the mounting groove 71 to limit the first limiting block 41 and the second limiting block 43. In addition, by inserting it into the mounting holes 72 at different positions, the gap between the first limiting block 41 and the second limiting block 43 can be adjusted to accommodate different types of punches 212.
[0039] Reference Figure 1 and Figure 2 The guide assembly 3 includes a vertically arranged guide rod 31 and a guide block 32 with a groove 321 on its side wall. The connecting plate 211 is inserted into the groove 321 and slidably connected to the guide block 32. A baffle 20 extends laterally on the side of the workbench 1. The guide rod 31 passes through the baffle 20 and is fixedly connected to the connecting plate 211 by bolts. During the movement of the connecting plate 211, it will be constrained by the wall of the groove 321 and the guide rod 31 to prevent the connecting plate 211 from shifting.
[0040] Reference Figure 2It also includes a cam 30 for driving the connecting plate 211 to move. The cam 30 is fan-shaped, that is, the outer ring has an arc edge and a straight edge. Correspondingly, the top side of the connecting plate 211 is detachably connected to a mating block 40 with an arc-shaped end by bolts. The mating block 40 is always engaged with the cam 30. During the rotation of the cam 30, if the end of the mating block 40 transitions from abutting the straight edge of the cam 30 to abutting the arc edge, the mating block 40 and the connecting plate 211 move vertically downward to cut the wire 80. If the end of the mating block 40 transitions from abutting the arc edge of the cam 30 to abutting the straight edge, the mating block 40 and the connecting plate 211 move vertically upward to reset.
[0041] Specifically, the reset of the connecting plate 211 is achieved by the following features: A reset elastic element 60 is sleeved on the guide rod 31. In this embodiment, the reset elastic element 60 is selected as a spring. In addition, a protruding edge 50 is arranged around the side of the guide rod 31 away from the connecting plate 211. The protruding edge 50 is fixed to the guide rod 31 by welding. One end of the spring abuts against the protruding edge 50, and the other end of the spring abuts against the baffle 20.
[0042] When the connecting plate 211 moves vertically downward, the guide rod 31 moves downward synchronously with the connecting plate 211. The spring on the guide rod 31 is compressed by the protrusion 50 and contracts. When the end of the mating block 40 transitions from contacting the arc edge of the cam 30 to contacting the straight edge, the spring stretches, causing the guide rod 31 to move vertically upward. The guide rod 31 synchronously drives the connecting plate 211 to move upward.
[0043] Reference Figure 2 The bending component 22 includes a first bending rod 221 vertically disposed on the bottom side of the limiting part 4 and two second bending rods 222 respectively located on both sides of the first bending rod 221. The second bending rods 222 are inclined and their output ends face the limiting part 4. Both the first bending rod 221 and the second bending rod 222 can move along their own length direction.
[0044] During the movement, the two second bending rods 222 located on both sides of the first bending rod 221 first move toward the limiting platform 42, further bending the wire 80 segment, which has already been bent vertically downwards at both ends, toward its own center. Then the second bending rods 222 move backwards, and the first bending rod 221 moves toward the limiting platform 42, contacting the two ends of the wire 80 segment and making the two ends of the wire 80 segment fit against the bottom side of the limiting platform 42, thus completing the final bending.
[0045] In addition, when the first bending rod 221 performs the final bending of the wire 80 segment, the first bending rod 221 will press the part of the wire 80 segment that was originally bent, so that the bent part will have a bend.
[0046] Specifically, refer to Figure 2 and Figure 3 The limiting platform 42 mainly includes a limiting post 421 and a limiting plate 422. The limiting post 421 and the limiting plate 422 are spaced apart and their top surfaces are flush. After the punch 212 cuts out 80 segments of wire and bends both ends of the 80 segments of wire, the bottom side of the limiting plate 422 has a ramp 4221 with an inclined direction facing the limiting post 421. The top surface of the first bending rod 221 is inclined to match the slope 4221. Furthermore, one side of the top surface of the first bending rod 221 protrudes to form a protrusion 2211. When the first bending rod 221 bends the wire 80 segment, the protrusion 2211 extends into the gap between the limiting post 421 and the limiting plate 422 to bend the already bent part of the wire 80 segment, thereby forming a bend and forming the final workpiece.
[0047] In addition, the limiting platform 42 has a guide wire 6 extending laterally in the direction away from the worktable 1. The side of the guide wire 6 away from the worktable 1 is bent downward, so that the guide wire 6 is arc-shaped. After the wire 80 segment is bent to form a workpiece, the workpiece is sleeved on the outer end of the limiting plate 422. Under the guidance of the guide wire 6, the workpiece moves along the bending direction of the guide wire 6 to complete the unloading. By setting the guide wire 6, the workpiece is prevented from splashing everywhere during the unloading process.
[0048] Reference Figure 2 It also includes a connecting block 5 for moving the second folding rod 222. A connecting groove 51 is provided on one side wall of the connecting block 5. The second folding rod 222 is placed in the connecting groove 51 and detachably connected to the connecting block 5 by bolts. Personnel can produce workpieces of different specifications by replacing different models of the second folding rod 222.
[0049] In addition, guide blocks 32 are provided at both the connecting block 5 and the second bending rod 222. The guide blocks 32 are fixed on the workbench 1, and the connecting block 5 and the second bending rod 222 are inserted into the grooves 321 of the corresponding guide blocks 32 to constrain the movement trajectory of the first bending rod 221 and the second bending rod 222, ensuring the smooth bending of the 80 segments of wire.
[0050] Furthermore, the other end of the connecting block 5 is connected to a drive assembly 8 to drive the connecting block 5. The drive assembly 8 mainly includes a movable rod 81 and a movable block 82. One end of the movable block 82 is hinged to the side of the worktable 1, and the other end of the movable block 82 is hinged to the input end of the movable rod 81. The output end of the movable rod 81 is hinged to the connecting block 5. When the movable block 82 rotates, it drives the movable rod 81 to move, and the movable rod 81 drives the connecting block 5 to move. In this way, the circular motion is converted into direct motion.
[0051] Reference Figure 2The first limiting block 41 has a lead tube 70 for the wire 80 to pass through on the side away from the limiting platform 42. The lead tube 70 is fixedly connected to the workbench 1 by welding. The first limiting block 41 has a clearance hole 411 for the wire 80 to pass through. The lead tube 70 and the clearance hole 411 are coaxially arranged. The wire 80 is guided by the lead tube 70 and the inner wall of the clearance hole 411 to ensure that the wire 80 remains straight during feeding.
[0052] Reference Figure 1 and Figure 4 The guide assembly 3 also includes multiple vertically staggered guide plates 33. Specifically, one of the adjacent guide plates 33 is rotated 90 degrees around its own length centerline. The multiple guide plates 33 are connected to the workbench 1 in sequence. Two sets of guide wheel groups 34 are rotatably connected to the guide plates 33 along the length of the guide plates 33. The two sets of guide wheel groups 34 are staggered along the length of the guide plates 33. In addition, the two sets of guide wheel groups 34 are fitted with a clearance to allow the wire 80 to pass through. Furthermore, multiple guide wheels 341 in the guide wheel group 34 are provided with guide grooves 342. The guide grooves 342 are arranged around the guide wheels 341 to constrain the wire 80.
[0053] The implementation principle of this application embodiment is as follows: during the vertical movement of the punch 212, the groove 321 on the guide block 32 abuts against the two side walls of the connecting plate 211, while the peripheral side wall of the guide rod 31 is constrained by the through hole wall of the baffle 20, thus limiting the movement trajectory of the connecting plate 211 and preventing the connecting plate 211 from shifting during the movement, which could lead to the possibility of the wire 80 being punched to uneven lengths, thereby better ensuring the accuracy of the produced workpiece.
[0054] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be covered within the scope of protection of this application.
Claims
1. A flat crochet hook production device, characterized in that, The device includes a cutting assembly (2), a guide assembly (3), and a limiting part (4) for supporting wire (80) placed on the side of the workbench (1). The guide assembly (3) is connected to the cutting assembly (2) and is used to limit the movement trajectory of the cutting assembly (2). The cutting assembly (2) includes a stamping part (21) placed on the top side of the limiting part (4) and a bending part (22) placed on the bottom side of the limiting part (4). Both the stamping part (21) and the bending part (22) can move toward the limiting part (4). The stamping part (21) includes a connecting plate (211) and a punch (212) for cutting wire (80). The punch (212) is connected to the bottom side of the connecting plate (211). The guide assembly (3) includes a vertically arranged guide rod (31) and a guide block (32) with a groove (321) on its side wall. The connecting plate (211) is inserted into the groove (321) and slidably connected to the guide block (32). A baffle (20) extends laterally on the side of the worktable (1). The guide rod (31) passes through the baffle (20) and is connected to the connecting plate (211).
2. The flat crochet hook production device according to claim 1, characterized in that, It also includes a cam (30) for driving the connecting plate (211) to move. The top side of the connecting plate (211) is detachably connected to a mating block (40) with an arc-shaped end. The mating block (40) abuts against the cam (30). A reset elastic element (60) is sleeved on the guide rod (31) and a protruding edge (50) is arranged around the side away from the connecting plate (211). The two ends of the reset elastic element (60) act on the protruding edge (50) and the baffle (20) respectively.
3. The flat crochet hook production device according to claim 1, characterized in that, The bending member (22) includes a first bending rod (221) vertically disposed on the bottom side of the limiting part (4) and two second bending rods (222) respectively located on both sides of the first bending rod (221). The second bending rods (222) are inclined and their output ends face the limiting part (4). Both the first bending rod (221) and the second bending rods (222) can move along their own length direction.
4. The flat crochet hook production device according to claim 3, characterized in that, It also includes a connecting block (5) for moving the second folding rod (222). A connecting groove (51) is provided on one side wall of the connecting block (5). The second folding rod (222) is placed in the connecting groove (51) and is detachably connected to the connecting block (5).
5. A flat crochet hook production device according to claim 3, characterized in that, The limiting part (4) includes a first limiting block (41), a limiting platform (42) and a second limiting block (43) arranged sequentially and at intervals on the worktable (1) in the transverse direction. The end of the punch (212) is provided with a mating groove (2121) that mates with the limiting platform (42). The two sides of the punch (212) are respectively attached to the side walls of the first limiting block (41) and the second limiting block (43).
6. A flat crochet hook production device according to claim 5, characterized in that, The limiting platform (42) has a guide wire (6) extending laterally in the direction away from the worktable (1), and the guide wire (6) bends downward on the side away from the worktable (1).
7. A flat crochet hook production device according to claim 5, characterized in that, The top of the limiting platform (42) is horizontally provided with a mounting block (7) for mounting the first limiting block (41) and the second limiting block (43). The mounting block (7) has a mounting groove (71) along its own length direction and a plurality of mounting holes (72) are provided on the inner wall of the mounting groove (71). The first limiting block (41) and the second limiting block (43) have protrusions (44) that match the mounting groove (71) on the side of the working table (1). The protrusions (44) can be inserted into the mounting groove (71) and threadedly engaged with the mounting holes (72).
8. A flat crochet hook production device according to claim 7, characterized in that, The first limiting block (41) is provided with a lead tube (70) for the wire (80) to pass through on the side away from the limiting platform (42). The lead tube (70) is connected to the workbench (1). The first limiting block (41) is provided with a clearance hole (411) for the wire (80) to pass through. The lead tube (70) and the clearance hole (411) are coaxially arranged.
9. A flat crochet hook production device according to claim 7, characterized in that, The second limiting block (43) has an arc-shaped groove (431) on the side near the limiting platform (42).
10. A flat crochet hook production device according to claim 1, characterized in that, The guide assembly (3) also includes a plurality of vertically staggered guide plates (33), which are sequentially connected to the workbench (1). Two sets of guide wheel sets (34) are rotatably connected to the guide plates (33) along the length of the guide plates (33). The two sets of guide wheel sets (34) are fitted with a clearance and can allow wires (80) to pass through.