A fastener bending forming system

Abstract

This utility model belongs to the field of fastener processing and discloses a fastener bending and forming system, including a conveying mechanism, a stamping die, a positioning mechanism, and a robot. The conveying mechanism feeds the fastener, and the robot transfers the fastener body from the conveying mechanism to the positioning mechanism. By specially designing the threads of the clamping holes, the depth of the clamping holes and the final tightening torque can align the starting position of the threads on the fastener body with the bending direction. The robot clamps the fastener quickly and can apply a stable final tightening torque, ensuring high reliability. Furthermore, the robot can disassemble the fastener body relative to the clamping plate, eliminating the need for manual intervention during assembly and disassembly. The stamping process of the stamping die does not threaten worker safety, resulting in high safety.

Description

Technical Field

[0001] This utility model belongs to the field of fastener processing technology, specifically relating to a fastener bending and forming system. Background Technology

[0002] L-shaped threaded fasteners are commonly used to connect two components that are not on the same straight line. For example, in the installation and maintenance of mechanical equipment, these fasteners can provide additional stability and support. Furthermore, by aligning the starting end of the thread with the bent short side of the fastener, they can be used in situations requiring a specific angle of connection, achieving proper alignment and fixation between components. Common examples include L-shaped anchor bolts.

[0003] L-shaped threaded fasteners are often formed by bending and stamping straight threaded fasteners during processing. Existing forming equipment often uses a stamping mechanism to bend the straight fasteners. In order to ensure that the starting end of the thread and the short side of the bend are on the same side, the straight threaded fasteners are usually placed manually. However, manual placement is too slow and has poor accuracy. At the same time, it requires continuous loading and unloading, which is dangerous and not conducive to practical use. Utility Model Content

[0004] The present invention aims to provide a fastener bending and forming system to address the problems of low efficiency and poor accuracy of manual loading and unloading mentioned above.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a fastener bending and forming system, comprising...

[0006] A conveying mechanism is used to convey the fastener body;

[0007] A stamping die includes an upper die base and a lower die base. An elastic stripper plate and a bending punch are installed on the bottom surface of the upper die base. The bending punch is slidably inserted into the elastic stripper plate. A bending die and a side support plate are installed on the lower die base, with the bending die corresponding to the bending punch.

[0008] The positioning mechanism includes a lifting unit and a clamping plate. The side wall of the clamping plate has clamping holes for mounting fastener bodies. The clamping plate is located on the side of the upper mold base away from the conveying mechanism. The lifting unit is used to adjust the bottom edge height of the clamping plate.

[0009] The robotic arm can transfer the fastener body on the conveying mechanism and can install or remove the fastener body from the clamping hole.

[0010] The principle and effects of this technical solution:

[0011] 1. The fastener body is fed by a conveying mechanism, and the robot arm transfers the fastener body on the conveying mechanism to the positioning mechanism. By using specially designed threads for the clamping hole, the depth of the clamping hole and the final tightening torque can be aligned with the starting position and bending direction of the thread on the fastener body. The robot arm clamps the fastener body, which is fast and can apply a stable final tightening torque, with high reliability. The robot arm can also disassemble the fastener body relative to the clamping plate, so the disassembly and assembly process does not require human intervention. The stamping process of the stamping die does not threaten the safety of the workers, and the safety is high.

[0012] 2. The height of the clamping plate is controlled by the lifting unit so that when not stamping, the horizontal height of the clamping hole can be raised by lifting, so that the robot can remove or install fastening bolts in the clamping hole. When stamping, the fastener body clamped by the clamping plate can be moved to the bending die by lowering, so that the bending punch can stamp normally.

[0013] The present invention is further configured such that: the stamping die also includes a pressure plate, the pressure plate is fixed to the bottom surface of the elastic unloading plate, the position of the pressure plate corresponds to the position of the bending die, the bottom surface of the pressure plate and the top surface of the bending die are respectively provided with relief grooves, the cross-section of the relief grooves is semi-circular, and the cutting edge of the bending die is located on the side of the relief groove close to the conveying mechanism.

[0014] The principle and effect of this technical solution: By setting the pressure plate, the pressure plate and the bending die can jointly limit the position of the end of the fastener body held by the clamping hole through the relief groove, so as to avoid the end of the fastener body bending and moving in the horizontal direction during the stamping process, thus ensuring the feasibility of stamping bending.

[0015] The present invention is further configured such that the axial height of the clamping hole is not lower than the axial height of the relief groove located on the bending die, and not higher than the axial height of the relief groove located on the pressure plate.

[0016] The principle and effect of this technical solution: By limiting the minimum and maximum height of the clamping hole, the clamping hole, under the control of the lifting unit, will not interfere with the position of other components, thus ensuring the feasibility of the device.

[0017] This utility model is further configured as follows: the conveying mechanism includes a hopper, an intermittent feeding unit, and a material support frame. The intermittent feeding unit includes a drive motor, support plates, a feeding platform, and a rotating shaft. Two support plates are arranged opposite each other, and a rotating shaft is rotatably installed between the two support plates. The drive motor is installed on the outer side of one of the support plates, and the movable end of the drive motor is connected to the rotating shaft for transmission. The two ends of the rotating shaft are respectively fixedly fitted with feeding platforms. The feeding platforms are located on the inner side of the two support plates, and the feeding platforms are circumferentially spaced with multiple feeding slots with semi-circular cross-sections. The hopper is provided with... The material is placed above the material picking platform, and the distance between the bottom edge of the hopper and the top edge of the material picking platform is the same as the radius of the fastener body. The material support frame is located on the side of the material picking platform near the lower mold base, and the material support frame includes a material support plate, a connecting plate and a support leg. There are two material support plates, and the two ends of the connecting plate are connected to the two material support plates respectively. The material support plate is L-shaped, and the long side of the material support plate is inclined. The horizontal height of the end of the material support plate near the lower mold base is lower than the horizontal height of the end of the material support plate near the material picking platform. The support leg is fixed to the bottom surface of the material support plate.

[0018] The principle and effect of this technical solution: The material handling platform is driven to rotate by a drive motor, so that the material handling slots on the platform can be misaligned by rotation. By limiting the distance between the bottom edge of the hopper and the top surface of the material handling platform, when the material handling slots of the platform are not aligned with the bottom edge outlet of the hopper, the fastener body can be limited by the bottom edge of the hopper. When the material handling slots are aligned with the bottom edge outlets at both ends, the fastener body can fall into the material handling slots, thereby detaching from the hopper. The fastener body above is still restricted by the edge of the hopper and cannot detach from the hopper. By intermittently driving the material handling platform to rotate by the drive motor, the intermittent feeding effect can be achieved. The material intermittently removed by the material handling platform is placed on the material support frame for the robot arm to grasp and pick up.

[0019] The present invention is further configured such that: four picking slots are spaced apart around the circumference of the picking platform, and the radius of the picking slots is 1.1 times the radius of the fastener body.

[0020] The principle and effect of this technical solution: By having four picking slots, the picking platform can rotate intermittently by 90°, and there can be horizontal picking slots. Furthermore, by making the picking slots slightly larger than the shaft diameter of the fastener body, when the fastener body is in a horizontal state, the fastener body will abut against the lower semicircular inclined surface of the horizontal picking slot, and thus slide out of the picking slot under its own gravity to be accepted and supported by the material support frame.

[0021] The present invention is further configured such that: an arc-shaped anti-detachment plate is fixed on the outer side of the hopper, the axis of the anti-detachment plate coincides with the axis of the rotating shaft, and the distance between the inner edge of the anti-detachment plate and the outer edge of the material picking platform is the same as the radius of the fastener body.

[0022] The principle and effect of this technical solution: By setting up the anti-detachment plate, when the fastener body enters the material picking trough and the material picking platform rotates, the anti-detachment plate can limit and support the outer side of the fastener body, so as to prevent the fastener body from jumping out of the material picking trough under the action of centrifugal force and other factors before it reaches the designated position, that is, before it reaches the material support frame.

[0023] The present invention is further configured such that a retaining ring is fixed on the side of the material handling platform near the support plate.

[0024] The principle and effect of this technical solution: By setting the retaining ring, the end of the material picking groove can be limited to prevent the fastener body from moving to the outside of the material picking platform through the material picking groove, so as to ensure the stability of the material picking platform in limiting the position of the fastener body. Attached Figure Description

[0025] Figure 1 This is the front view of the present invention;

[0026] Figure 2 for Figure 1 Enlarged view of the middle stamping die;

[0027] Figure 3 for Figure 2 Enlarged cross-sectional view of the lifting component;

[0028] Figure 4 for Figure 3 Enlarged isometric view of the structure at the middle limiting plate;

[0029] Figure 5 for Figure 1 Enlarged view of the conveyor mechanism;

[0030] Figure 6 for Figure 5 Axonometric structural diagram of the intermittent material handling unit;

[0031] Figure 7 for Figure 5 Axonometric view of the back structure of the middle hopper;

[0032] Figure 8 Axonometric structural diagram of the back of the material support frame;

[0033] Figure 9 for Figure 2 Enlarged isometric view of the structure at the intermediate pressure plate and bending die;

[0034] Figure 10 for Figure 2 A diagram showing the state of the clamping plate when it moves to its lowest stroke position during the stamping process;

[0035] Figure 11 for Figure 2A diagram showing the state of the elastic unloading plate and pressure plate when they move to their lowest stroke position during the stamping process.

[0036] Figure 12 for Figure 2 A diagram showing the state of the bending punch when it moves to its lowest stroke position during the stamping process;

[0037] Figure 13 This is another embodiment of the clamping hole in this utility model. Detailed Implementation

[0038] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments:

[0039] The reference numerals in the accompanying drawings include:

[0040] 110. Upper die holder; 120. Elastic stripper plate; 130. Bending punch; 140. Pressure plate; 150. Lower die holder; 160. Bending die; 161. Cutting edge; 170. Side support plate; 180. Relief groove;

[0041] 210. Clamping plate; 211. Clamping hole; 212. Settling groove; 220. Clamping sleeve; 221. Clamping cavity;

[0042] 220. Base plate; 221. Limiting groove;

[0043] 230. Guide assembly; 231. Guide rod; 232. First limiting block; 233. Second limiting block; 234. Third limiting block; 235. Cover plate;

[0044] 240. Rotating mechanism;

[0045] 250. Lifting assembly; 251. Support lug; 252. Lifting rod; 253. Limiting plate; 2531. Limiting protrusion; 254. Limiting bolt;

[0046] 310. Fastener body;

[0047] 410. Hopper; 411. Anti-detachment plate; 420. Intermittent feeding unit; 421. Drive motor; 422. Support plate; 423. Feeding platform; 4231. Feeding trough; 424. Rotating shaft; 425. Retaining ring; 430. Material support frame; 431. Material support plate; 432. Connecting plate; 433. Support leg;

[0048] 510. Robotic arm.

[0049] Example:

[0050] As attached Figure 1-11As shown, this utility model discloses a fastener bending and forming system, including a conveying mechanism, a stamping die, a positioning mechanism, and a robot arm 510. The conveying mechanism is used to convey the fastener body 310 and includes a hopper 410, an intermittent material handling unit 420, and a material support frame 430. The intermittent material handling unit 420 includes a drive motor 421, a support plate 422, a material handling platform 423, and a rotating shaft 424. Two support plates 422 are arranged opposite each other, and the rotating shaft 424 is rotatably mounted between the two support plates 422. Motor 421 is mounted on the outer side of support plate 422 on one side. The movable end of motor 421 is connected to rotating shaft 424. Material picking platforms 423 are fixedly mounted on both ends of rotating shaft 424. The material picking platforms 423 are located inside the two support plates 422, and four semi-circular material picking slots 4231 are spaced apart circumferentially on the material picking platforms 423. The radius of each material picking slot 4231 is 1.1 times the radius of the fastener body 310. A hopper 410 is disposed on the material picking platform 422. Above 3, and the distance between the bottom edge of the hopper 410 and the top edge of the picking platform 423 is the same as the radius of the fastener body 310. The material support frame 430 is located on the side of the picking platform 423 near the lower mold base 150, and the material support frame 430 includes a material support plate 431, a connecting plate 432 and a support leg 433. There are two material support plates 431, and the two ends of the connecting plate 432 are respectively connected to the two material support plates 431. The material support plate 431 is L-shaped, and the long side of the material support plate 431 is inclined. The horizontal height of the end near the lower mold base 150 is lower than the horizontal height of the end of the material support plate 431 near the material pick-up platform 423. The support leg 433 is fixed to the bottom surface of the material support plate 431. An arc-shaped anti-detachment plate 411 is fixed to the outer side of the hopper 410. The axis of the anti-detachment plate 411 coincides with the axis of the rotating shaft 424. The distance between the inner edge of the anti-detachment plate 411 and the outer edge of the material pick-up platform 423 is the same as the radius of the fastener body 310. A retaining ring 425 is fixed to the side of the material pick-up platform 423 near the support plate 422. The specific position of the material support frame 430 is shown in the attached figure. Figure 5 As shown, when the picking platform 423 rotates to a horizontal state, since the radius of the picking groove 4231 is larger than that of the fastener body 310, the fastener body 310 will fall onto the lower half of the curved surface of the horizontal picking groove 4231 under its own gravity. This curved surface will cause the fastener body 310 to separate in the inclined direction due to gravity. This component force will cause the fastener body 310 to detach from the picking groove 4231 and enter the support plate 431. After rolling to abut against the short side of the support plate 431, it can be picked up and fed by the robot arm 510.

[0051] The stamping die includes a pressure plate 140, an upper die holder 110, and a lower die holder 150. An elastic stripper plate 120 and a bending punch 130 are mounted on the bottom surface of the upper die holder 110. The bending punch 130 is slidably inserted into the elastic stripper plate 120. A bending die 160 and a side support plate 170 are mounted on the lower die holder 150, with the position corresponding to the bending punch 130. The pressure plate 140 is fixed to the bottom surface of the elastic stripper plate 120, and the position of the pressure plate 140 corresponds to the position of the bending die 160. The bottom surface of the pressure plate 140 and the top surface of the bending die 160 are respectively provided with relief grooves 180. The cross-section of the relief grooves 180 is semi-circular. The cutting edge 161 of the bending die 160 is located on the side of the relief groove 180 near the conveying mechanism. The elastic stripper plate 120 can be composed of a stripper plate, mounting bolts, and a spring. The bending punch 130 is slidably inserted into the stripper plate. The elastic stripper plate 120 can also be composed of a stripper plate, mounting bolts, and a rubber block. These are all commonly used and existing structural components in molds. In this solution, the stripper plate, mounting bolts, and spring are used as an example. At the same time, a pad should be provided between the bending punch 130 and the upper mold base 110, and between the bending die 160 and the lower mold base 150 for their installation. However, it is not marked or shown in the illustrations of this solution. It is only briefly described here. These are commonly used structural components and usually exist as a set.

[0052] Among them, the stamping stroke of the upper die holder 110 is more determined by the guide post and guide sleeve than that of the lower die holder 150, which is not shown in the attached figure, and the guide post and guide sleeve can play the role of guiding and limiting.

[0053] The positioning mechanism includes a lifting unit and a clamping plate 210. The side wall of the clamping plate 210 has a clamping hole 211 for mounting the fastener body 310. The clamping hole 211 is a threaded hole (it can also be a countersunk hole, which allows the head of the bolt to be recessed during use to avoid damaging the outer surface of the part to be connected). A clamping sleeve 220 is slidably inserted into the clamping hole 211. The clamping sleeve 220 has a clamping cavity 221 with internal threads, which is threaded into the fastener body 310. Specifically, a flange plate can be fixed to the outside of the clamping sleeve 220. The flange plate is installed in the clamping hole 211 by bolt connection and pin positioning, thereby limiting the position of the clamping sleeve 220. Other detachable connection methods with installation and positioning effects can also be used, such as those shown in the attached figure. Figure 11 As shown), the clamping plate 210 is located on the side of the upper die holder 110 away from the conveying mechanism. The lifting unit is used to adjust the bottom edge height of the clamping plate 210. The axial height of the clamping hole 211 is not lower than the axial height of the relief groove 180 located on the bending die 160, and not higher than the axial height of the relief groove 180 located on the pressure plate 140.

[0054] In this design, clamping holes 211 are respectively provided on the left and right side walls of the clamping plate 210. The clamping holes 211 are threaded holes, and the axial direction of the clamping holes 211 is perpendicular to the stamping direction of the stamping die. The lifting unit includes a base plate 220, a lifting assembly 250, a rotating mechanism 240, and a guide assembly 230. The lifting assembly 250 is used to control the height of the clamping plate 210, the rotating mechanism 240 is used to control the periodic reciprocating rotation of the clamping plate 210, and the guide assembly 230 is used to guide the lifting and lowering of the clamping plate 210, so that the position of the clamping plate 210 can be controlled by the lifting assembly 250 to lift and lower, controlled by the rotating assembly to rotate, and guided by the guide assembly 230 to move stably. The base plate 220 is used to install and connect the guide assembly 230 and the rotating mechanism 240, so that the clamping plate 210 can be controlled by various movements.

[0055] The following example structures are the optimal structures applicable to this solution, and not limitations on the positioning mechanism of this solution.

[0056] The lifting assembly 250 includes a support lug 251, a lifting rod 252, and a limiting plate 253. The support lug 251 is fixed to the side wall of the upper mold base 110. The lifting rod 252 is slidably inserted into the support lug 251. The clamping plate 210 is slidably fitted onto the lifting rod 252. The limiting plates 253 are detachably installed at both ends of the lifting rod 252. The limiting plates 253 have limiting protrusions 2531. The cross-section of the limiting protrusions 2531 is irregular (it can be a square cross-section as shown in the attached figure, or other non-circular cross-section shapes). The limiting protrusions 2531 are slidably inserted into the lifting rod. Inside 252 (both ends of the lifting rod 252 have grooves that slide to fit the limiting protrusion 2531), and a limiting bolt 254 is slidably inserted on the limiting plate 253. The limiting bolt 254 passes through the limiting protrusion 2531 and is threaded into the lifting rod 252. A portion of the elastic unloading plate 120 is located above the clamping plate 210. Thus, when the elastic unloading plate 120 moves downward under the drive of the upper mold base 110, it can synchronously drive the clamping plate 210 downward by abutting, so as to avoid friction and other factors that hinder the clamping plate 210 from moving downward under its own weight.

[0057] A rotating mechanism 240 is installed at the bottom of the base plate 220. The rotating mechanism 240 is a rotary cylinder. The movable end of the rotary cylinder is connected to the bottom surface of the base plate 220. The rotary cylinder is installed on the machine base and is used to control the base plate 220 to rotate horizontally by 180°. It is used to control the periodic position change of the left and right clamping holes 211. The rotary cylinder is a commonly used rotation control component.

[0058] The guide assembly 230 includes a guide rod 231, a first limiting block 232, a second limiting block 233, a cover plate 235, and a third limiting block 234. A limiting groove 221 is formed inside the base plate 220. The first limiting block 232 is slidably fitted in the limiting groove 221. The guide rod 231 is fixed on the first limiting block 232. The second limiting block 233 is fitted and fixed on the guide rod 231 and is located between the clamping plate 210 and the base plate 220. A recessed groove 212 is formed on the top surface of the clamping plate 210. The cover plate 235 is installed on the clamping plate 210. The guide rod 231 extends into the recessed groove 212, and the top surface of the guide rod 231 abuts against the cover plate 235. The third limiting block 234 is threadedly fitted on the guide rod 231, and the third limiting block 234 abuts against the bottom surface of the recessed groove 212. Among them, multiple sets of guide components 230 are arranged at intervals along the circumference of the base plate 220. By setting multiple sets of guide components 230, a better guiding and limiting effect can be achieved, and stronger lateral pressure can be withstood.

[0059] Two sets of robotic arms 510 are provided. One set is installed between the conveying mechanism and the stamping die to clamp the fastener body 310 on the conveying mechanism and rotate it into the clamping hole 211 of the clamping plate 210 and apply a certain torque. The other set is installed on the side of the positioning mechanism away from the stamping die to rotate and disassemble the L-shaped threaded fastener that has been stamped and rotated to that position, so that the clamping hole 211 at that position can be left empty for direct installation after the next rotation. The robotic arm 510 can be a clamp with a multi-axis sliding joint, an electric wrench, and a thumb cylinder. The multi-axis sliding joint enables the electric wrench and thumb cylinder to move back and forth. The thumb cylinder is mounted on the electric wrench, allowing it to grip the fastener body 310. The electric wrench can rotate the fastener body 310 to engage with the clamping hole 211. The electric wrench can also apply a certain torque for complete and precise positioning. The above structures are common in existing robotic arms 510s. Only a simple explanation of the principle is provided here for understanding. In addition, for positioning accuracy and other requirements, the robotic arm should also be equipped with corresponding sensors and other structures for position positioning, data processing, and analysis.

[0060] The principle behind precisely limiting the starting thread direction of the threaded end of the fastener body 310 via the threaded hole is as follows: the threaded end of the fastener body 310 has an external thread starting point, and the threaded hole of the clamping hole 211 also has an internal thread starting point. Only when the starting point of the external thread corresponds to the starting point of the internal thread can the fastener body 310 be further inserted into the clamping hole 211 through subsequent rotation. Therefore, the starting point of the internal thread of the threaded hole of the clamping hole 211 can limit the screw-in angle of the fastener body 310. Furthermore, through a specific threaded hole depth, the fastener body 310 can be precisely positioned... 10. While rotating a specific number of turns to complete the thread conversion, the starting point of the external thread of the fastener body 310 is rotated to the position where it mates with the threaded hole. At this point, since the hole depth is fixed, the fastener body 310 cannot continue to go deeper. By applying a certain torque, the degree of engagement of the fastener body 310 is finely adjusted, so that the starting point of the thread of the fastener body 310 rotates to the final position, that is, the position corresponding to the bending and stamping direction. Then, the threaded end of the fastener body can be accurately positioned by the starting point of the threaded hole, the hole depth of the threaded hole, and the torque.

[0061] The parts of the device not covered herein are the same as or can be implemented using existing technologies.

[0062] Among them, insert and sliding insert are mating bodies with holes, the cross section of the shaft or rod matches the hole, and the shaft or rod can slide relative to the hole. Threaded insert is a hole with threads, the shaft or rod is threaded, and the shaft or rod is connected to the mating body by screwing. Detachable installation can be by bolt thread connection or bolt and nut connection, etc., depending on what can be actually achieved.

[0063] The above descriptions are merely embodiments of this utility model. Commonly known technical solutions or characteristics are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solution of this utility model. These modifications and improvements should also be considered within the scope of protection of this utility model, and will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A fastener bending and forming system characterized by: include A conveying mechanism is used to convey the fastener body; A stamping die includes an upper die base and a lower die base. An elastic stripper plate and a bending punch are mounted on the bottom surface of the upper die base. The bending punch is slidably inserted into the elastic stripper plate. A bending die and a side support plate are mounted on the lower die base, with the bending die positioned corresponding to the bending punch. The positioning mechanism includes a lifting unit and a clamping plate. The side wall of the clamping plate has clamping holes for mounting the fastener body. The clamping plate is located on the side of the upper mold base away from the conveying mechanism. The lifting unit is used to adjust the bottom edge height of the clamping plate. The robotic arm can transfer the fastener body on the conveying mechanism and can install or remove the fastener body from the clamping hole.

2. A fastener bending system as defined in claim 1, wherein: The stamping die also includes a pressure plate, which is fixed to the bottom surface of the elastic unloading plate. The position of the pressure plate corresponds to the position of the bending die. The bottom surface of the pressure plate and the top surface of the bending die are respectively provided with relief grooves. The cross-section of the relief groove is semi-circular. The cutting edge of the bending die is located on the side of the relief groove closer to the conveying mechanism.

3. A fastener bending system as defined in claim 2, wherein: The axial height of the clamping hole is not lower than the axial height of the relief groove located on the bending die, and not higher than the axial height of the relief groove located on the pressure plate.

4. A fastener bending system as defined in claim 1, wherein: The conveying mechanism includes a hopper, an intermittent feeding unit, and a support frame. The intermittent feeding unit includes a drive motor, support plates, a feeding platform, and a rotating shaft. Two support plates are arranged opposite each other, and the rotating shaft is rotatably mounted between the two support plates. The drive motor is mounted on the outer side of one of the support plates, and the movable end of the drive motor is connected to the rotating shaft. The feeding platform is fixedly fitted at both ends of the rotating shaft. The feeding platform is located inside the two support plates, and multiple semi-circular feeding slots are spaced apart around the circumference of the feeding platform. The hopper is positioned above the feeding platform. The distance between the bottom edge of the hopper and the top edge of the picking platform is the same as the radius of the fastener body. The material support frame is located on the side of the picking platform near the lower mold base. The material support frame includes a material support plate, a connecting plate, and a support leg. There are two material support plates, and the two ends of the connecting plate are respectively connected to the two material support plates. The material support plate is L-shaped, and the long side of the material support plate is inclined. The horizontal height of the end of the material support plate near the lower mold base is lower than the horizontal height of the end of the material support plate near the picking platform. The support leg is fixed to the bottom surface of the material support plate.

5. A fastener bending system as defined in claim 4, wherein: The material picking platform has four picking slots spaced apart around its circumference, and the radius of each picking slot is 1.1 times the radius of the fastener body.

6. A fastener bending system as defined in claim 5, wherein: An arc-shaped anti-detachment plate is fixed to the outside of the hopper. The axis of the anti-detachment plate coincides with the axis of the rotating shaft. The distance between the inner edge of the anti-detachment plate and the outer edge of the material picking platform is the same as the radius of the fastener body.

7. A fastener bending system as defined in claim 4, wherein: A retaining ring is fixed on the side of the material handling platform near the support plate.

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