A pin processing device and processing method for manufacturing graphene diodes

Abstract

This invention relates to the field of graphene diode lead processing equipment, specifically a lead processing equipment and method for manufacturing graphene diodes. The equipment includes a pressing machine, a movable rod slidably mounted on the upper inner side of the pressing machine, an upper pressure plate fixedly mounted on the bottom end of the movable rod, a base fixedly mounted on the bottom inner side of the pressing machine, an upper sheath fixedly mounted on the bottom end of the upper pressure plate, a lower pressure plate below the upper pressure plate, connecting rods slidably mounted on the lower pressure plate near the upper sheath, a bending device below the lower pressure plate, and a lead socket mounted on the upper side of the base. The electrical performance of a graphene diode is highly dependent on the connection quality between the lead and the diode. By protecting the graphene diode and the lead, damage to the connection during bending can be avoided, which could lead to increased resistance, poor contact, or even short circuits. These protective measures ensure stable electrical performance at the connection, guaranteeing the diode's performance during use.

Description

Technical Field

[0001] This invention relates to the field of graphene diode pin processing equipment technology, specifically to a pin processing equipment and processing method for manufacturing graphene diodes. Background Technology

[0002] Graphene is a two-dimensional material composed of a single layer of carbon atoms. Due to its excellent electrical conductivity, mechanical strength and thermal conductivity, it is widely regarded as one of the important materials for future electronic devices. The application of graphene covers many fields such as sensors, energy storage devices, and conductive films. In particular, in the manufacture of graphene diodes, its high mobility and low operating voltage make it show great application potential in high-frequency electronic devices.

[0003] A search revealed that prior art publication number CN107052197B discloses a bending device for cylindrical diode leads. The device includes an inclined conveyor rail, with a roller inserted at the lower end of the rail. The roller has an arc-shaped groove formed on its outer wall. Pads are formed on the sidewalls of the conveyor rail on both sides of the groove. Connecting blocks are fixed to the pads, and a stop is formed at the lower end of each connecting block. An annular sleeve is formed at the lower end of each stop. The roller is fixed to a rotating shaft, and both ends of the shaft are hinged to the sleeve. One end of the shaft extends out of the sleeve and is fixed with a drive gear. This solution uses a mechanical method to bend the diode leads, replacing manual bending, thereby effectively improving production efficiency and ensuring consistent bending lengths at both ends of the diode leads.

[0004] Therefore, based on the above-mentioned search and combined with existing technologies, the connection between the pin and the diode is one of the most vulnerable parts of the entire diode structure during diode manufacturing. Therefore, during the bending process, it is most susceptible to concentrated stress, which may cause mechanical damage to the connection, leading to increased contact resistance, or even open circuit or short circuit. The above-mentioned solution uses a roller to push the diode to the stop for obstruction before bending, which will increase the stress at the connection between the diode and the pin, thus causing damage to the connection. This solution is not very practical. Therefore, we propose a pin processing device and processing method for graphene diode manufacturing. Summary of the Invention

[0005] The purpose of this invention is to provide a pin processing apparatus and method for manufacturing graphene diodes, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a lead processing device for manufacturing graphene diodes, comprising a pressing machine, a movable rod slidably mounted on the upper inner side of the pressing machine, an upper pressure plate fixedly mounted on the bottom end of the movable rod, a base fixedly mounted on the bottom inner side of the pressing machine, the base being located below the upper pressure plate, a graphene diode to be tested being placed on top of the base, an upper sheath fixedly mounted on the bottom end of the upper pressure plate, lower pressure plates being provided on both the left and right sides below the upper pressure plate, a connecting rod slidably mounted on the end of each lower pressure plate near the upper sheath, rectangular holes being opened at both the left and right ends of the upper pressure plate, the connecting rods being slidably mounted in the rectangular holes, a bending device for bending the leads of the graphene diode being provided below the lower pressure plate, and lead seats being slidably mounted on both the left and right ends of the upper side of the base, each lead seat having a groove at its upper end, the lead of the graphene diode being located in the groove.

[0007] As a further embodiment of the present invention, an adjustment shaft is rotatably mounted on the bottom end of the base, and an elastic connecting rod is fixedly mounted on the end of the pin holder away from the pin sleeve. The free end of the elastic connecting rod is wrapped around the outer surface of the adjustment shaft. Through the elastic characteristics of the elastic connecting rod, the elastic connecting rod can push the pin sleeve to move, so that pins with different requirements can be bent.

[0008] As a further embodiment of the present invention, the connecting rod and the lower pressure plate are connected by a resistance spring, the bottom end of the lower pressure plate is rotatably mounted with an abutment wheel, the inner end of the abutment wheel is fixedly mounted with a drive shaft, and both the front and rear ends of the drive shaft are rotatably mounted with passive shafts.

[0009] As a further embodiment of the present invention, the bending device includes a steering plate, and one end of the steering plate near the lower pressure plate is fixedly connected to the passive shaft. A spool is rotatably mounted on the inner end of the steering plate, and a traction line is wound around the outer surface of the spool. The spool is pulled out by the traction line, causing it to rotate.

[0010] As a further embodiment of the present invention, a stabilizing plate is fixedly installed on the left end of the steering plate, a driven gear is rotatably installed on the inner end of the stabilizing plate, a driving gear is fixedly installed on the upper end of the spool, and the driving gear meshes with the driven gear. A retaining ring is provided on the left end of the stabilizing plate. When the spool rotates, it can drive the meshing between the driven gear and the driven rack, causing the retaining ring to rotate, and then hooking the pin.

[0011] As a further embodiment of the present invention, the upper and lower ends of the retaining ring are provided with sliding grooves, and a connecting post is fixedly installed on the end of the stabilizing plate near the retaining ring. The connecting post is engaged in the sliding groove, and a passive rack is fixedly installed on the outer surface of the retaining ring. The passive rack meshes with a passive gear.

[0012] As a further embodiment of the present invention, an adjusting cylinder is fixedly installed on the right end of the lower pressure plate by bolts, and a threaded rod is rotatably installed on the inner end of the adjusting cylinder. The threaded rod is hollow, and a sliding block is slidably installed on the inner end of the threaded rod. The free end of the traction line is fixedly connected to the sliding block. A limiting sleeve is threaded on the outer surface of the threaded rod. The limiting sleeve is used to limit the sliding distance of the sliding block. The sliding block and the threaded rod are connected by a return spring.

[0013] As a further embodiment of the present invention, a passive rod is fixedly installed at the bottom end of the connecting rod, a through hole is provided on the outer surface of the lower pressure plate, and the passive rod passes through the through hole and the adjusting sleeve and is fixedly connected to the upper end of the sliding block.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] 1. When using the present invention, the electrical performance of the graphene diode is highly dependent on the connection quality between the pin and the diode. By protecting the graphene diode and the pin, the connection is prevented from being damaged during bending, which could lead to increased resistance, poor contact, or even short circuit. Through the protection measures, the electrical performance of the connection can be kept stable, thus ensuring the performance of the diode during use.

[0016] 2. When using this invention, the installation position and pin configuration of the graphene diode may vary. This invention provides a device that allows for free adjustment of the pin bending angle, enabling the graphene diode to be compatible with various types of circuit boards and packaging forms, thereby reducing inventory pressure for different product models. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of a pin processing device for manufacturing graphene diodes.

[0018] Figure 2 This is an enlarged schematic diagram of a pin processing device for manufacturing graphene diodes.

[0019] Figure 3 This is a structural diagram showing the positional relationship between the upper pressure plate and the base;

[0020] Figure 4 This is a schematic diagram showing the positional relationship between the lower pressure plate and the steering plate.

[0021] Figure 5 This is a schematic diagram of the bending device.

[0022] Figure 6 Disassembly diagram of the drive shaft and driven shaft;

[0023] Figure 7 This is an enlarged structural schematic diagram of the bending device;

[0024] Figure 8 This is a schematic diagram of the internal structure of the regulating cylinder;

[0025] Figure 9 This is a schematic diagram of the internal structure of a threaded rod.

[0026] In the diagram: 1. Lower press; 2. Upper press plate; 3. Controller; 4. Graphene diode; 5. Movable rod; 101. Lower press plate; 102. Steering plate; 103. Abutment wheel; 104. Snap ring; 105. Passive shaft; 106. Drive shaft; 107. Abutment block; 108. Snap ring; 109. Passive rod; 110. Stabilizing plate; 111. Passive ring; 201. Base; 202. Upper protective sleeve; 20 3. Pin sheath; 204. Connecting rod; 205. Resistance spring; 206. Pin holder; 207. Elastic connecting rod; 208. Adjusting shaft; 301. Adjusting cylinder; 302. Adjusting sleeve; 303. Threaded rod; 304. Sliding block; 305. Limiting sleeve; 306. Return spring; 401. Bollard; 402. Traction line; 403. Drive gear; 404. Driven gear; 405. Driven rack. Detailed Implementation

[0027] 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.

[0028] Example 1: Please refer to Figures 1-3 A pin processing device and processing method for manufacturing graphene diodes include a pressing machine 1. A movable rod 5 is slidably installed on the upper inner side of the pressing machine 1. An upper pressure plate 2 is fixedly installed on the bottom end of the movable rod 5 by bolts. A base 201 is fixedly installed on the bottom inner side of the pressing machine 1 by bolts. The base 201 is located below the upper pressure plate 2. Specifically, a controller 3 is fixedly installed on the front end of the pressing machine 1. An electric push rod (not shown in the figure) is fixedly installed on the inner end of the pressing machine 1. The telescopic end of the electric push rod is fixedly connected to the movable rod 5. The electric push rod and the controller 3 are electrically connected by wires. The controller 3 is used to control the extension and retraction of the telescopic end of the electric push rod.

[0029] The graphene diode 4 to be tested is placed on top of the base 201. A rubber sleeve is fixedly installed on the contact surface between the base 201 and the graphene diode 4 to prevent scratches on the outer surface of the graphene diode 4. An upper protective sleeve 202 is fixedly welded to the bottom of the upper pressure plate 2. A protective rubber sleeve is fixedly installed on the end of the upper protective sleeve 202 near the graphene diode 4 to maximize protection of the outer surface of the graphene diode 4 from scratches when in contact with it. Lower pressure plates 101 are provided on both the left and right sides below the upper pressure plate 2, with the lower pressure plates 101 close to the upper protective sleeve 2. One end of the upper pressure plate 2 is slidably mounted with a connecting rod 204. Both ends of the upper pressure plate 2 have rectangular holes. The connecting rod 204 is slidably mounted in the rectangular holes. Specifically, the outer surface of the connecting rod 204 has a rectangular groove. A rectangular block is fixedly installed in the rectangular hole. The rectangular block is located in the rectangular groove, thereby preventing the lower pressure plate 101 from rotating when it moves up or down. The connecting rod 204 can move left and right in the rectangular hole. A rectangular block is fixedly installed at the connection between the lower pressure plate 101 and the connecting rod 204, thereby further preventing the lower pressure plate 101 from rotating.

[0030] More specifically, the upper end of the connecting rod 204 is provided with a threaded groove, and a bolt is fitted on the inner wall of the threaded groove. The bolt is located on the upper side of the upper pressure plate 2, thereby fixing the current position of the connecting rod 204.

[0031] like Figure 2 , 3 As shown in Figure 4, a bending device for bending the pins of the graphene diode 4 is provided below the lower pressure plate 101. Pin holders 206 are slidably installed on both the left and right ends of the upper side of the base 201. The upper end of each pin holder 206 has a groove. The pins of the graphene diode 4 are located in the groove. The connection between the graphene diode 4 and the pin is very fragile. The pin holder 206 supports the connection of the graphene diode 4 pins, so that the stress generated during the pin bending process will not affect the connection of the graphene diode 4 pins. Furthermore, pin sleeves 203 are fixedly installed on both the left and right ends of the upper sheath 202. The bottom end of each pin sleeve 203 has a groove, and the pin sleeve 203 is parallel to the pin holder 206.

[0032] Example 2: Please refer to Figure 3 , 4 Based on Embodiment 1, an adjustment shaft 208 is rotatably mounted on the bottom end of the base 201, and an elastic connecting rod 207 is fixedly mounted on the end of the pin seat 206 away from the pin sleeve 203. The elastic connecting rod 207 is a part that can recover by its own elasticity after bending. It is a mature existing technology and will not be described in detail here. The free end of the elastic connecting rod 207 is wrapped around the outer surface of the adjustment shaft 208. After rotating the adjustment shaft 208, the pin seat 206 is driven to move left and right by wrapping or releasing the elastic connecting rod 207.

[0033] like Figure 4 , 5 As shown in Figure 6, the connecting rod 204 is connected to the lower pressure plate 101 by a resistance spring 205. The bottom end of the lower pressure plate 101 is rotatably mounted with an abutment wheel 103. The outer surface of the abutment wheel 103 is fixedly mounted with an anti-slip rubber sleeve. The inner end of the abutment wheel 103 is fixedly mounted with a drive shaft 106. Both the front and rear ends of the drive shaft 106 are rotatably mounted with a passive shaft 105. Specifically, a passive ring 111 is fixedly mounted on the end of the passive shaft 105 near the drive shaft 106. The outer surface of the passive ring 111 has multiple holes, and abutment blocks 107 are inserted into each hole. The abutment blocks 107 and the passive ring 111 are connected by a reset snap ring. The inner end of the drive shaft 106 has multiple snap blocks arranged in a ring shape, and the abutment block 107 is located between two adjacent snap blocks.

[0034] Please see Figure 5 , 6 7. The bending device includes a steering plate 102, and one end of the steering plate 102 near the lower pressure plate 101 is fixedly connected to the passive shaft 105. A spool 401 is rotatably mounted on the inner end of the steering plate 102. A traction line 402 is wound on the outer surface of the spool 401. The spool 401 and the steering plate 102 are engaged by a reset torsion spring. When the spool 401 is subjected to an external force and rotates at a certain angle, the reset torsion spring is compressed. As the force disappears, the spool 401 is restored to its initial state under the action of the reset torsion spring.

[0035] Specifically, the limiting ring is connected to the drive shaft 106 by a snap ring 108. Under the action of the snap ring 108, the lower pressure plate 101 and the steering plate 102 are in a non-perpendicular state.

[0036] A stabilizing plate 110 is fixedly installed on the left end of the steering plate 102. A driven gear 404 is rotatably installed on the inner end of the stabilizing plate 110. A driving gear 403 is fixedly installed on the upper end of the spool 401, and the driving gear 403 meshes with the driven gear 404. A retaining ring 104 is provided on the left end of the stabilizing plate 110. The retaining ring 104 is semi-circular, and both the upper and lower ends of the retaining ring 104 have grooves. A connecting post is fixedly installed on the end of the stabilizing plate 110 near the retaining ring 104. The connecting post is engaged in the groove. The groove is coated with lubricating grease to make the sliding smoother. When the retaining ring 104 rotates, it can hook the 4 pins of the graphene diode. A driven rack 405 is fixedly installed on the outer surface of the retaining ring 104, and the driven rack 405 meshes with the driven gear 404.

[0037] Please see Figure 5 , 89. An adjusting cylinder 301 is fixedly installed on the right end of the lower pressure plate 101 by bolts. A threaded rod 303 is rotatably installed on the inner end of the adjusting cylinder 301. The threaded rod 303 is hollow. An adjusting sleeve 302 is rotatably installed on the upper end of the adjusting cylinder 301. The adjusting sleeve 302 is fixedly connected to the threaded rod 303. A rectangular hole is opened on the outer surface of the threaded rod 303. A sliding block 304 is slidably installed on the inner end of the threaded rod 303. The free end of the traction line 402 is fixedly connected to the sliding block 304. A limiting sleeve is threaded on the outer surface of the threaded rod 303. 305, the limiting sleeve 305 is used to limit the sliding distance of the sliding block 304. The sliding block 304 is connected to the threaded rod 303 by a return spring 306. The limiting sleeve 305 moves upward and pushes the sliding block 304 to move upward, so that the traction line 402 on the outer surface of the spool 401 is released a certain distance in advance. When the traction line 402 is released, when the traction line 402 on the outer surface of the spool 401 is rotated by the maximum length of the pre-released traction line 402, the maximum pre-rotation angle of the retaining ring 104 can still hook the pin.

[0038] Specifically, the inner end of the adjusting cylinder 301 is provided with a sliding groove, and a protrusion is fixedly installed on the outer surface of the limiting sleeve 305. The protrusion is located in the sliding groove, so that when the threaded rod 303 rotates, the limiting sleeve 305 will not rotate along with it. Under the constraint of the protrusion and the sliding groove, the limiting sleeve 305 can move up or down. A protruding post is fixedly installed on the outer surface of the sliding block 304. After the protruding post passes through the rectangular hole on the outer surface of the threaded rod 303, it is parallel to the limiting sleeve 305.

[0039] like Figure 4 , 8 As shown, a passive rod 109 is fixedly installed at the bottom end of the connecting rod 204. A through hole is opened on the outer surface of the lower pressure plate 101, and the passive rod 109 passes through the through hole and the adjusting sleeve 302 and is fixedly connected to the upper end of the sliding block 304.

[0040] like Figure 2 As shown, a limiting ring is fixedly installed at one end of the pin base 206 near the lower pressure plate 101, and a latch is slidably installed at one end of the lower pressure plate 101 near the pin base 206. A spring piece is engaged between the latch and the lower pressure plate 101, thereby enabling the latch to have a telescopic function. When the latch is engaged in the limiting ring, the bottom end of the upper sleeve 202 is completely aligned with the top end of the base 201.

[0041] The working principle of this invention is:

[0042] In use, the graphene diode 4 is placed on the upper end of the base 201. Then, the adjusting shaft 208 and the adjusting connecting rod 204 are rotated according to the bending requirements. Then, the adjusting sleeve 302 is rotated to make the limiting sleeve 305 move the sliding block 304. When the sliding block 304 moves, the traction wire 402 on the outer surface of the spool 401 is released a certain distance in advance. In this way, the bending length of the pin can be adjusted.

[0043] Subsequently, the telescopic end of the electric actuator drives the movable rod 5 to move downward. As the upper pressure plate 2 continues to move downward, the abutment wheel 103 first contacts the pin of the graphene diode 4. As the abutment wheel 103 continues to move downward, the pin is pressed downward, achieving the first bending of the pin seat 206 away from the base 201. As the abutment wheel 103 moves downward, the abutment wheel 103 begins to rotate under the action of the anti-slip rubber sleeve. It drives the passive shaft 105 to rotate through the drive shaft 106. Then, under the action of the abutment block 107, the drive shaft 106 drives the passive shaft 105 to rotate until the steering plate 102 is parallel to the lower pressure plate 101.

[0044] So, until the latch is engaged within the limiting retaining ring, the bottom ends of the upper sheath 202 and the pin sheath 203 are respectively in contact with the upper ends of the base 201 and the pin seat 206. Then, the output shaft of the electric actuator drives the movable rod 5 upward. With the latch engaged within the limiting retaining ring, the connecting rod 204 drives the driven rod 109 upward. During the upward movement of the driven rod 109, the sliding block 304 pulls the traction wire 402, causing the spool 401 to rotate. Then, when the retaining ring 104 rotates, it is fitted onto the pin... On the outer surface, the retaining ring 104 rotates to its maximum angle and then cannot rotate any further. As the passive rod 109 continues to rise, the steering plate 102 rotates under the action of the traction line 402, which in turn causes the pins to bend twice. Finally, as the upward force continues, the latch breaks free from the limiting retaining ring. When the upper pressure plate 2 returns to its initial state, the graphene diode 4 is lifted up, and the two pins are inserted into the retaining ring 104. Then, the graphene diode 4 is grasped and moved left and right to remove the two pins from the retaining ring 104.

[0045] Subsequently, under the action of the resistance spring 205, the retaining ring 108 and the return torsion spring, the lower pressure plate 101 and the steering plate 102 return to their initial state.

[0046] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A pin processing apparatus for manufacturing graphene diodes, comprising a pressing machine (1), characterized in that: A movable rod (5) is slidably installed on the upper inner side of the press (1). An upper pressure plate (2) is fixedly installed on the bottom end of the movable rod (5). A base (201) is fixedly installed on the bottom inner side of the press (1). The base (201) is located below the upper pressure plate (2). A graphene diode (4) to be tested is placed on top of the base (201). An upper sheath (202) is fixedly installed on the bottom end of the upper pressure plate (2). Lower pressure plates (101) are provided on both the left and right sides below the upper pressure plate (2). 01) A connecting rod (204) is slidably installed at one end near the upper sheath (202). Rectangular holes are opened at both ends of the upper pressure plate (2). The connecting rod (204) is slidably installed in the rectangular holes. A bending device for bending the pins of the graphene diode (4) is provided below the lower pressure plate (101). Pin holders (206) are slidably installed at both ends of the upper side of the base (201). A groove is opened at the upper end of the pin holder (206). The pins of the graphene diode (4) are located in the groove. The bending device includes a steering plate (102), and one end of the steering plate (102) near the lower pressure plate (101) is fixedly connected to the passive shaft (105). A spool (401) is rotatably mounted on the inner end of the steering plate (102), and a traction line (402) is wound around the outer surface of the spool (401). A stabilizing plate (110) is fixedly installed on the left end of the steering plate (102), a driven gear (404) is rotatably installed on the inner end of the stabilizing plate (110), a driving gear (403) is fixedly installed on the upper end of the spool (401), and the driving gear (403) meshes with the driven gear (404). A retaining ring (104) is provided on the left end of the stabilizing plate (110). The retaining ring (104) has grooves at both the upper and lower ends. A connecting post is fixedly installed on one end of the stabilizing plate (110) near the retaining ring (104). The connecting post is engaged in the groove. A passive rack (405) is fixedly installed on the outer surface of the retaining ring (104). The passive rack (405) meshes with the passive gear (404). An adjusting cylinder (301) is fixedly installed on the right end of the lower pressure plate (101) by bolts. A threaded rod (303) is rotatably installed on the inner end of the adjusting cylinder (301). The threaded rod (303) is hollow. A sliding block (304) is slidably installed on the inner end of the threaded rod (303). The free end of the traction line (402) is fixedly connected to the sliding block (304). A limiting sleeve (305) is threaded on the outer surface of the threaded rod (303). The limiting sleeve (305) is used to limit the sliding distance of the sliding block (304). The sliding block (304) and the threaded rod (303) are connected by a return spring (306).

2. The lead processing apparatus for manufacturing graphene diodes according to claim 1, characterized in that: An adjusting shaft (208) is rotatably mounted on the bottom end of the base (201), and an elastic connecting rod (207) is fixedly mounted on the end of the pin seat (206) away from the pin sleeve (203). The free end of the elastic connecting rod (207) is wrapped around the outer surface of the adjusting shaft (208).

3. The lead processing apparatus for manufacturing graphene diodes according to claim 2, characterized in that: The connecting rod (204) is connected to the lower pressure plate (101) by a resistance spring (205). The bottom end of the lower pressure plate (101) is rotatably mounted with an abutment wheel (103). The inner end of the abutment wheel (103) is fixedly mounted with a drive shaft (106). Both the front and rear ends of the drive shaft (106) are rotatably mounted with passive shafts (105).

4. The pin processing apparatus for manufacturing graphene diodes according to claim 3, characterized in that: A passive rod (109) is fixedly installed at the bottom end of the connecting rod (204). A through hole is provided on the outer surface of the lower pressure plate (101), and the passive rod (109) passes through the through hole and the adjusting sleeve (302) and is fixedly connected to the upper end of the sliding block (304).

5. A method for processing leads in the manufacture of graphene diodes, applied to the lead processing apparatus for the manufacture of graphene diodes as described in any one of claims 1-4, characterized in that: S1: The movable rod (5) moves downward. As the upper pressure plate (2) continues to move downward, the abutment wheel (103) first contacts the pin of the graphene diode (4). As the abutment wheel (103) continues to move downward, the pin is pressed down, and the pin seat (206) is bent for the first time away from the base (201). As the abutment wheel (103) moves downward, the abutment wheel (103) starts to rotate under the action of the anti-slip rubber sleeve. The drive shaft (106) drives the passive shaft (105) to rotate. Then, under the action of the abutment block (107), the drive shaft (106) drives the passive shaft (105) to rotate until the steering plate (102) is parallel to the lower pressure plate (101). S2: The connecting rod (204) drives the passive rod (109) to move upward. During the upward movement of the passive rod (109), the traction line (402) is pulled by the sliding block (304) to make the spool (401) rotate. Then, when the retaining ring (104) rotates, it is sleeved on the outer surface of the pin. After the retaining ring (104) rotates to the maximum angle, it can no longer rotate. As the passive rod (109) continues to rise, the steering plate (102) is rotated under the action of the traction line (402), which in turn drives the pin to bend twice.

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