A copper wire drawing device and method for diode connection leads

Abstract

This invention relates to the field of diode assembly technology and discloses a copper wire drawing device and method for diode connection leads. The device includes a mounting plate, a copper wire coil, a power clamping mechanism, and a clamping mechanism. The copper wire coil is wound on a spool located at one end of the mounting plate. A connecting platform is located at the other end of the mounting plate. The power clamping mechanism includes a motor and a power gear. The motor can drive the power gear to rotate in both directions via a belt. The clamping mechanism includes a support plate and a clamping head. The clamping head can move along the support plate. By controlling the working state of the motor, this invention can control the clamping components to clamp the copper wire at all times, preventing the copper wire from falling and ensuring smooth clamping. Simultaneously, through gear transmission, the clamping head can be driven by a lead screw to achieve the purpose of drawing the copper wire.

Description

Technical Field

[0001] This invention relates to the field of diode assembly equipment technology, specifically to a copper wire drawing device and method for diode connection leads. Background Technology

[0002] A diode is an electronic device that conducts current in one direction only. Inside a semiconductor diode is a PN junction with two leads. This type of diode exhibits unidirectional current conduction depending on the direction of the applied voltage. Generally, a surface-mount diode is a PN junction interface formed by sintering P-type and N-type semiconductors. A space charge layer forms on both sides of this interface, creating a built-in electric field. When the applied voltage is zero, the diffusion current caused by the concentration difference of charge carriers on both sides of the PN junction and the drift current caused by the built-in electric field are equal, resulting in an electrical equilibrium state.

[0003] Diodes are widely used in important fields such as in-vehicle electronic equipment and safety driving systems in fuel vehicles and new energy vehicles due to their simple structure and high reliability. However, due to their simple structure and small size, the assembly of diodes in the current technology often involves manually pulling copper wires to connect them to the diode leads and then fixing them by soldering. This is time-consuming, labor-intensive, inefficient, and increases labor costs. Therefore, a copper wire pulling device is needed to solve the above problems. Summary of the Invention

[0004] The purpose of this invention is to provide a copper wire drawing device and method for diode connection leads, so as to solve the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution:

[0006] This invention relates to a copper wire drawing device and method for diode connection leads, comprising a mounting plate and a copper wire coil, the copper wire coil being wound on a spool, the spool being rotatably connected to a sleeve, the sleeve being fixedly installed between a pair of vertical plates, the vertical plates being fixedly connected to one end of the upper surface of the mounting plate, and a connecting platform being fixedly installed on the upper surface of the mounting plate away from the spool. The invention also includes: a power clamping mechanism comprising a motor and a power gear; the motor being fixedly installed on the end of the mounting plate near the connecting platform via a base fixedly connected to its side wall; the power gear being disposed between the copper wire coil and the connecting platform; and a clamping mechanism comprising a support plate and a clamping head; the support plate being fixedly installed on the center of the upper surface of the mounting plate via mounting posts fixedly connected to the four corners of its lower surface; and the clamping head being located between the support plate and the mounting plate.

[0007] Furthermore, a small transmission wheel and a first bevel gear are fixedly connected in sequence to the output end of the motor. A belt is driven to the small transmission wheel, and a large transmission wheel is fixedly connected to the other end of the belt.

[0008] Furthermore, a drive shaft is fixedly connected to the center of the power gear, the large drive wheel is fixedly connected to the drive shaft, and sliding plates are provided on both sides of the power gear. Several protruding teeth are fixedly connected to the side of the sliding plate closest to the power gear, and the power gear meshes with the protruding teeth. Guide rails are fixedly connected to the side walls of the sliding plate adjacent to the power gear, and the sliding plate is slidably disposed between a set of slide rails via the guide rails. The slide rails are fixedly connected to the mounting plate.

[0009] Furthermore, a first groove is provided at the upper end of the sliding plate, and a second groove is provided on both side walls of the first groove. A clamping plate is slidably disposed inside the second groove, and a clamping spring is fixedly connected between the clamping plate and the inner side wall of the first groove.

[0010] Furthermore, a limiting block is fixedly connected to the center of one end of the bearing plate near the motor, and a vertically placed transmission rod is provided on one side of the motor output end. The upper and lower ends of the transmission rod pass through the limiting block and the limiting plate respectively, and a second bevel gear is fixedly connected to them. The second bevel gear located at the lower end of the transmission rod meshes with the first bevel gear, and the limiting plate is fixedly installed on the upper surface of the mounting plate.

[0011] Furthermore, the bearing plate has a square groove inside and an elliptical hole through it. The upper surface of the bearing plate is fixedly connected to both ends of the bearing plate, and a lead screw is rotatably connected inside the mounting ring. The end of the lead screw near the motor is fixedly connected to a third bevel gear through the mounting ring. The third bevel gear meshes with the second bevel gear. A set of fixing plates is fixedly connected to the lower surface of the bearing plate away from the third bevel gear. The lower end of the fixing plates is rotatably connected to two rollers.

[0012] Furthermore, the clamping head consists of two intersecting long rods, and the end of the clamping head has an arc-shaped plate design. A cylinder is rotatably connected to the intersection of the clamping heads. The end of the clamping head away from the end of the clamping head is rotatably connected to the inside of the block. The block is slidably mounted on the crossbar. The crossbar is mounted inside the square groove. A transmission block is fixedly connected to the middle of the crossbar. The transmission block is connected to the lead screw through a screw hole opened inside it. A return spring is fixedly connected between the block and the transmission block.

[0013] Furthermore, each of the clamping heads is fixedly connected to a short column in the middle, and each of the two short columns is rotatably connected to a limiting tooth that can engage with each other. A circular groove is opened at the end of the limiting tooth near the short column, and a spring clamp is fixedly connected between the side wall of the circular groove and the short column. Two opposite reset teeth are fixedly connected to the lower surface of the bearing plate near the motor.

[0014] The drawing method for copper wire drawing devices for diode connection leads includes the following steps:

[0015] Step 1: Start the motor to rotate forward. Through the transmission of the first bevel gear, the second bevel gear and the third bevel gear, the lead screw is driven to rotate. As the lead screw rotates, the transmission block will move along the lead screw in the direction away from the motor end. During the movement of the clamping head, it passes over the two sliding plates without colliding.

[0016] Step 2: When the crossbar moves to the center of the bearing plate, the return spring is in normal state. Then the transmission block continues to move in the same direction. With the setting of the elliptical hole, the distance between the two blocks is reduced, the return spring is compressed, and at this time the clamping head rotates. The distance between the ends of the two clamping heads is reduced, and the copper wire can be clamped.

[0017] Step 3: The two limiting teeth come into contact with each other, the spring clamp is compressed, the two limiting teeth engage, the spring clamp resets, and the limiting teeth are fixed to prevent the clamping head from resetting due to the action of the reset spring.

[0018] Step four: The motor reverses, and the transmission block moves with the lead screw towards the side closer to the motor, pulling the copper wire to the connection platform to facilitate the connection between the copper wire and the diode body. Then, the clamping head contacts the reset tooth, and the clamping head is rotated to disengage the two clamping heads. When the clamping head passes over the two sliding plates, the height of the two sliding plates is interchanged, and the horizontal position between the two sliding plates is nearly the same and lower than the horizontal height of the end of the clamping head to prevent collision between the clamping head and the sliding plates.

[0019] The present invention has the following beneficial effects:

[0020] (1) The present invention uses a bearing plate and an elliptical hole on the bearing plate to make the crossbar move synchronously along the square groove with the transmission block. When the crossbar is on the side of the bearing plate away from the motor, the distance between the two square blocks decreases and the reset spring is compressed. At this time, the clamping head rotates and the distance between the ends of the two clamping heads decreases, so that the copper wire can be clamped.

[0021] (2) By setting the limiting teeth and the reset teeth, the limiting teeth contact each other, the spring clamp is compressed, the two limiting teeth engage, the spring clamp resets, and the limiting teeth are fixed, thereby preventing the clamping head from resetting due to the action of the reset spring. The clamping head contacts the reset teeth, and the clamping head rotates, so that the two clamping heads disengage, which facilitates the smooth operation of the next clamping action.

[0022] (3) By setting the sliding plates, the clamping head moves away from the motor and passes over the two sliding plates without colliding. When the clamping head moves towards the motor, the height of the two sliding plates is interchanged by setting the power gear, and the horizontal position of the two sliding plates is close to the same and lower than the horizontal height of the end of the clamping head, which prevents the clamping head from colliding with the sliding plates and ensures the smooth progress of the stretching action.

[0023] Of course, any product implementing this invention does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0024] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2 This is a schematic diagram of the mounting plate structure of the present invention;

[0027] Figure 3 This is a schematic diagram of the power clamping mechanism of the present invention;

[0028] Figure 4 This is a schematic diagram of the sliding plate structure of the present invention;

[0029] Figure 5 This is a schematic diagram of the bearing plate structure of the present invention;

[0030] Figure 6 This is a schematic diagram of the clamping head structure of the present invention;

[0031] Figure 7 For the present invention Figure 3 A magnified view of part A in the diagram;

[0032] Figure 8 For the present invention Figure 6 A magnified view of part B in the diagram.

[0033] The attached diagram lists the components represented by each number as follows:

[0034] In the diagram: 1. Mounting plate; 11. Connecting platform; 2. Copper wire coil; 21. Drum; 22. Sleeve; 23. Vertical plate; 3. Motor; 31. Small transmission wheel; 311. Belt; 312. Large transmission wheel; 32. First bevel gear; 33. Transmission rod; 331. Second bevel gear; 332. Limiting plate; 4. Power gear; 401. Transmission shaft; 41. Sliding plate; 411. Convex tooth; 412. Guide rail; 413. Slide rail; 42. Groove 1; 421. Groove 2; 43. Clamping plate; 44. Clamping spring; 5. Bearing plate; 501. Mounting column; 502. Limiting block; 51. Square groove; 52. Elliptical hole; 53. Mounting ring; 54. Lead screw; 541. Third bevel gear; 55. Fixing plate; 551. Roller; 6. Clamping head; 601. Short column; 61. Cylindrical column; 62. Square block; 63. Crossbar; 64. Transmission block; 641. Return spring; 65. Limiting tooth; 651. Circular groove; 652. Spring clamp; 66. Return tooth. Detailed Implementation

[0035] 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.

[0036] Please see Figures 1-8 As shown, the present invention is a copper wire drawing device and drawing method for diode connection leads, including a mounting plate 1 and a copper wire coil 2. The copper wire coil 2 is wound on a drum 21, which is rotatably connected to a sleeve 22. The sleeve 22 is fixedly installed between a pair of vertical plates 23. The vertical plates 23 are fixedly connected to one end of the upper surface of the mounting plate 1. A connecting platform 11 is fixedly installed on the upper surface of the mounting plate 1 away from the drum 21. The invention also includes: a power clamping mechanism, which includes a motor 3 and a power gear 4. The motor 3 is fixedly installed on the end of the mounting plate 1 near the connecting platform 11 by a base fixedly connected to its side wall. The power gear 4 is located between the copper wire coil 2 and the connecting platform 11. A clamping mechanism, which includes a bearing plate 5 and a clamping head 6. The bearing plate 5 is fixedly installed on the center of the upper surface of the mounting plate 1 by mounting posts 501 fixedly connected to the four corners of its lower surface. The clamping head 6 is located between the bearing plate 5 and the mounting plate 1.

[0037] The output end of motor 3 is sequentially and fixedly connected to a small transmission wheel 31 and a first bevel gear 32. A belt 311 is connected to the small transmission wheel 31, and a large transmission wheel 312 is fixedly connected to the other end of the belt 311.

[0038] A drive shaft 401 is fixedly connected to the shaft of the power gear 4. The large drive wheel 312 is fixedly connected to the drive shaft 401. Sliding plates 41 are provided on both sides of the power gear 4. Several protruding teeth 411 are fixedly connected to the side of the sliding plate 41 closest to the power gear 4. The power gear 4 is meshed with the protruding teeth 411. The purpose of this arrangement is to facilitate the control of the two sliding plates 41 to rise or fall by the movement of the power gear 4. Guide rails 412 are fixedly connected to the side walls of the sliding plates 41 adjacent to the power gear 4. The sliding plates 41 are slidably arranged between a set of slide rails 413 through the guide rails 412. The slide rails 413 are fixedly connected to the mounting plate 1.

[0039] The upper end of the sliding plate 41 has a groove 42, and the two side walls of the groove 42 have grooves 421. A clamping plate 43 is slidably arranged inside the groove 421. A clamping spring 44 is fixedly connected between the clamping plate 43 and the inner side wall of the groove 42. The purpose of this arrangement is to make it easier to use the elasticity of the clamping spring 44 to clamp the copper wire.

[0040] A limiting block 502 is fixedly connected to the center of one end of the bearing plate 5 near the motor 3. A vertically placed transmission rod 33 is provided on one side of the output end of the motor 3. The upper and lower ends of the transmission rod 33 pass through the limiting block 502 and the limiting plate 332 respectively, and are fixedly connected to the second bevel gear 331. The second bevel gear 331 located at the lower end of the transmission rod 33 meshes with the first bevel gear 32. The limiting plate 331 is fixedly installed on the upper surface of the mounting plate 1. The purpose of this arrangement is to facilitate the rotation of the transmission rod 33 by utilizing the effect of gear transmission.

[0041] The support plate 5 has a square groove 51 inside, and an elliptical hole 52 is opened through the support plate 5. The two ends of the upper surface of the support plate 5 are fixedly connected to the mounting rings 53. The mounting rings 53 are rotatably connected to the lead screw 54. The end of the lead screw 54 near the motor 3 is fixedly connected to the third bevel gear 541 through the mounting ring 53. The third bevel gear 541 is meshed with the second bevel gear 331. The lower surface of the support plate 5 away from the third bevel gear 541 is fixedly connected to a set of fixing plates 55. The lower end of the fixing plates 55 is rotatably connected to two rollers 551. The purpose of this arrangement is to facilitate the guidance of the copper wire.

[0042] The clamping head 6 consists of two intersecting long rods, and the end of the clamping head 6 has an arc-shaped plate design. A cylinder 61 is rotatably connected at the intersection of the clamping heads 6. The end of the clamping head 6 away from the end of the clamping head 6 is rotatably connected inside the block 62. The block 62 is slidably mounted on the crossbar 63. The crossbar 63 is mounted inside the square groove 51. A transmission block 64 is fixedly connected to the middle of the crossbar 63. The transmission block 64 is connected to the lead screw 54 through a screw hole opened inside it. A return spring 641 is fixedly connected between the block 61 and the transmission block 64. The purpose of this arrangement is to facilitate the reset of the clamping head 6 and ensure the smooth operation of the next clamping action.

[0043] Each clamping head 6 has a short post 601 fixedly connected to its middle section. Each short post 601 has a limiting tooth 65 that can engage with each other. This is designed to limit the clamping head 6 after clamping the copper wire and maintain the clamping state of the copper wire. The end of the limiting tooth 65 near the short post 601 has a circular groove 651. A spring clamp 652 is fixedly connected between the side wall of the circular groove 651 and the short post 601. Two opposite reset teeth 66 are fixedly connected to the lower surface of the bearing plate 5 near the motor 3. This is designed to facilitate the disengagement of the two limiting teeth 65 and reset the clamping head 6.

[0044] In use, the spool 21 with copper wire wound around it can be installed on the sleeve 22, and the copper wire can be pulled out and guided by the roller 551 so that the copper wire is engaged inside the clamping plate 43. Then, the motor 3 is started, and through the transmission action of the first bevel gear 32, the second bevel gear 331 and the third bevel gear 541, the lead screw 54 can be driven to rotate. The motor 3 is controlled to rotate forward, and the lead screw 54 rotates. Through the transmission action between the lead screw 54 and the transmission block 64, the transmission block 64 will move away from the end of the lead screw 54. At the same time, through the setting of the bearing plate 5, the crossbar 63 moves synchronously with the transmission block 64 along the square groove 51. When the crossbar 63 moves to the center of the bearing plate 5, the return spring 641 is in the normal state. Then the transmission block 64 continues to move in the same direction. Through the setting of the elliptical hole 52, the two square As the distance between blocks 62 decreases, the return spring 641 is compressed, causing the clamping head 6 to rotate. The distance between the ends of the two clamping heads 6 decreases, allowing for the clamping of the copper wire. Simultaneously, the two limiting teeth 65 contact each other, compressing the spring clamp 652. Afterward, the two limiting teeth 65 engage, and the spring clamp 652 resets, fixing the limiting teeth 65 to prevent the clamping head 6 from resetting due to the action of the return spring 641. Then, the control motor 3 reverses, and the transmission block 64 moves with the lead screw 54 towards the side closer to the motor 3, allowing the copper wire to be pulled out onto the connecting platform 11 for subsequent connection of the copper wire and the diode body. After that, the clamping head 6 contacts the return tooth 66, causing the clamping head 6 to rotate and disengage, facilitating the smooth execution of the next clamping action.

[0045] When motor 3 rotates forward, the drive gear 4 rotates via belt 311. The drive gear 4 meshes with the teeth 41 on the sliding plates 41 located on both sides, allowing the sliding plate 41 on the side closer to motor 3 to slide downwards and the sliding plate 41 on the other side to slide upwards, maintaining a constant clamping effect on the copper wire. During its movement, the clamping head 6 passes over the two sliding plates 41 without colliding. When motor 3 rotates in reverse, the clamping head 6 remains in a clamping state, the horizontal position of the end of the clamping head 6 decreases, and both sets of clamping plates 43 lose their clamping effect on the copper wire. The clamping action of the wire, after the clamping head 6 passes above the two sliding plates 41, the height of the two sliding plates 41 is interchanged, and the horizontal position of the two sliding plates 41 is almost the same and lower than the horizontal height of the end of the clamping head 6, to prevent the clamping head 6 from colliding with the sliding plates 41 and to ensure the smooth progress of the stretching action. Afterwards, the clamping plate 43 located on the side closer to the motor 3 continues to rise, and the copper wire enters between the clamping plates 43 to fix the copper wire, which can ensure that the end position of the copper wire is fixed when the copper wire is cut and connected to the diode, and to ensure the smooth progress of the subsequent clamping action. Example

[0046] The drawing method for copper wire drawing devices for diode connection leads includes the following steps:

[0047] Step 1: Start the motor 3 to rotate forward. Through the transmission of the first bevel gear 32, the second bevel gear 331 and the third bevel gear 541, the lead screw 54 is driven to rotate. As the lead screw 54 rotates, the transmission block 64 will move along the lead screw 54 in the direction away from the motor 3. During the movement of the clamping head 6, it passes over the two sliding plates 41 without colliding.

[0048] Step 2: When the crossbar 63 moves to the center of the bearing plate 5, the return spring 641 is in normal state. Then the transmission block 64 continues to move in the same direction. With the setting of the elliptical hole 52, the distance between the two blocks 62 is reduced, the return spring 641 is compressed, and at this time the clamping head 6 rotates. The distance between the ends of the two clamping heads 6 is reduced, and the copper wire can be clamped.

[0049] Step 3: The two limiting teeth 65 come into contact with each other, the spring clamp 652 is compressed, the two limiting teeth 65 engage, the spring clamp 652 resets, and the limiting teeth 65 are fixed to prevent the clamping head 6 from resetting due to the action of the reset spring 641.

[0050] Step four: Motor 3 reverses direction, and transmission block 64 moves with lead screw 54 towards the side closer to motor 3, pulling the copper wire onto connecting platform 11 to facilitate connection between the copper wire and diode body. Then, clamping head 6 contacts reset tooth 66, causing clamping head 6 to rotate and disengage the two clamping heads 6. When clamping head 6 passes over the two sliding plates 41, the heights of the two sliding plates 41 are interchanged, and the horizontal positions of the two sliding plates 41 are nearly the same and lower than the horizontal height of the end of clamping head 6, preventing collision between clamping head 6 and sliding plate 41.

[0051] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A copper wire drafting device for diode connection lead, comprising a mounting plate (1) and a copper wire coil (2), the copper wire coil (2) is wound on a winding drum (21), the winding drum (21) is rotationally connected on a sleeve (22), the sleeve (22) is fixedly installed between a pair of vertical plates (23), the vertical plates (23) are fixedly connected on one end of the upper surface of the mounting plate (1), a connecting platform (11) is fixedly installed on the upper surface of the end of the mounting plate (1) away from the winding drum (21), further comprising: a power clamping mechanism, the power clamping mechanism comprises a motor (3) and a power gear (4), the motor (3) is fixedly installed on one end of the mounting plate (1) close to the connecting platform (11) through a base fixedly connected on the side wall thereof, the power gear (4) is arranged between the copper wire coil (2) and the connecting platform (11); a clamping mechanism, the clamping mechanism comprises a bearing plate (5) and a clamping head (6), the bearing plate (5) is fixedly installed on the upper surface of the mounting plate (1) in the center through mounting columns (501) fixedly connected on four corners of the lower surface thereof, the clamping head (6) is located between the bearing plate (5) and the mounting plate (1); characterized in that: the output end of the motor (3) is sequentially fixedly connected with a small transmission wheel (31) and a first bevel gear (32), a belt (311) is drivingly connected on the small transmission wheel (31), the other end of the belt (311) is drivingly connected with a large transmission wheel (312); a transmission shaft (401) is fixedly connected at the shaft center of the power gear (4), the large transmission wheel (312) is fixedly connected on the transmission shaft (401), a sliding plate (41) is arranged on both sides of the power gear (4), a plurality of protrusions (411) are fixedly connected on the side of the sliding plate (41) close to the power gear (4), the power gear (4) is arranged in meshing with the protrusions (411), guide rails (412) are fixedly connected on the two side walls adjacent to the power gear (4) of the sliding plate (41), the sliding plate (41) is slidingly arranged between a group of slide rails (413) through the guide rails (412), the slide rails (413) are fixedly connected on the mounting plate (1); a recess one (42) is opened on the upper end of the sliding plate (41), recess twos (421) are opened on the two side walls of the recess one (42), a clamping plate (43) is arranged inside the recess two (421), clamping springs (44) are fixedly connected between the clamping plate (43) and the inner side wall of the recess one (42); a limiting block (502) is fixedly connected on the central end of the bearing plate (5) close to the motor (3), a transmission rod (33) is arranged vertically on one side of the output end of the motor (3), the transmission rod (33) penetrates the limiting block (502) and a limiting plate (332) at the upper and lower ends thereof and is fixedly connected with a second bevel gear (331), the second bevel gear (331) located at the lower end of the transmission rod (33) is arranged in meshing with the first bevel gear (32), the limiting plate (332) is fixedly installed on the upper surface of the mounting plate (1).

2. A copper wire stretching device for diode connecting leads as defined in claim 1, characterized in that: The bearing plate (5) is internally provided with a square groove (51), and an elliptical hole (52) is formed through the bearing plate (5), the upper surface of the bearing plate (5) is fixedly connected with mounting rings (53) at both ends, the mounting rings (53) are rotatably connected with lead screws (54) inside, one end of the lead screw (54) close to the motor (3) is fixedly connected with a third bevel gear (541) penetrating the mounting ring (53), the third bevel gear (541) is in meshing connection with the second bevel gear (331), the lower surface of one end of the bearing plate (5) away from the third bevel gear (541) is fixedly connected with a group of fixed plates (55), and the lower end of the fixed plate (55) is rotatably connected with two upper and lower rollers (551).

3. A copper wire stretching device for diode connecting leads as defined in claim 2, characterized in that: The clamping head (6) is composed of two crossed long rods, and the end of the clamping head (6) is designed as an arc plate, the crossed part of the clamping head (6) is rotatably connected with a cylinder (61), one end of the clamping head (6) away from the end of the clamping head (6) is rotatably connected inside a square block (62), the square block (62) is slidably arranged on a cross rod (63), the cross rod (63) is arranged inside the square groove (51), the middle of the cross rod (63) is fixedly connected with a transmission block (64), the transmission block (64) is in transmission connection with the lead screw (54) through the screw hole formed in the transmission block (64), and the square block (62) and the transmission block (64) are fixedly connected with reset springs (641) therebetween.

4. A copper wire stretching device for diode connecting leads as defined in claim 3, characterized in that: The middle of the clamping head (6) is fixedly connected with a short column (601), the two short columns (601) are rotatably connected with limit teeth (65) capable of being clamped with each other, one end of the limit tooth (65) close to the short column (601) is provided with a circular groove (651), the spring clamps (652) are fixedly connected between the side wall of the circular groove (651) and the short column (601), and the lower surface of one end of the bearing plate (5) close to the motor (3) is fixedly connected with two opposite reset teeth (66).

5. A drawing method of the copper wire drawing apparatus for diode connecting lead wire including the copper wire drawing apparatus for diode connecting lead wire according to claim 4, characterized by, The method comprises the following steps: Step one, start the motor (3) to rotate in the positive direction, drive the lead screw (54) to rotate through the transmission of the first bevel gear (32), the second bevel gear (331) and the third bevel gear (541), the transmission block (64) moves away from the motor (3) along the lead screw (54), the clamping head (6) moves over the two sliding plates (41) without collision; Step two, when the cross rod (63) moves to the center of the bearing plate (5), the reset spring (641) is in a normal state, then the transmission block (64) continues to move in the same direction, the distance between the two square blocks (62) is reduced through the arrangement of the elliptical hole (52), the reset spring (641) is compressed, at this time, the clamping head (6) rotates, the distance between the two ends of the clamping head (6) is reduced, and the copper wire can be clamped. Step three, two limit teeth (65) contact each other, spring clamp (652) is compressed, two limit teeth (65) are clamped, spring clamp (652) resets, and limit teeth (65) are fixed, preventing the clamping head (6) from resetting due to the action of the reset spring (641); Step four, the motor (3) is reversed, the transmission block (64) moves along with the screw rod (54) to the side close to the motor (3), the copper wire is drawn out to the connection platform (11), the copper wire and the diode body are connected, then the limit tooth (65) contacts the reset tooth (66), the limit tooth (65) is rotated to make the two limit teeth (65) separate, wherein when the clamping head (6) passes above the two sliding plates (41), the height between the two sliding plates (41) is interchanged, the horizontal positions between the two sliding plates (41) are close to each other, and the horizontal height between the two sliding plates (41) is lower than the end of the clamping head (6), preventing the clamping head (6) from colliding with the sliding plate (41).

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