Finished product receiving hand of feeding and blanking punching machine

Abstract

The utility model provides a finished product receiving hand of a feeding and blanking punching machine, which comprises a punching machine, a receiving mechanism and a conveying mechanism, and is characterized in that the punching machine and the conveying mechanism are both matched with the receiving mechanism; the material receiving mechanism comprises a bottom plate, a first limiting ring and a second limiting ring are fixedly arranged on the bottom plate, a sleeve is rotationally installed in the first limiting ring and the second limiting ring, a material receiving arm sliding in the axial direction is arranged on the sleeve, a rotating shaft is arranged on the material receiving arm, a first gear fixedly sleeves the rotating shaft, and a material receiving hopper is fixedly arranged at the end, away from the material receiving arm, of the rotating shaft. A slideway exists between the first limiting ring and the second limiting ring, and the material receiving arm is in sliding fit with the slideway; a limiting assembly is arranged in the material receiving arm, and the material receiving mechanism is in transmission connection with a driving mechanism used for driving the sleeve to rotate. When the motor is started, the material receiving hopper can move downwards in the rotating process. In addition, when the material receiving hopper moves to the position above the conveying belt, the material receiving hopper can automatically reverse and pour materials. The whole working process is simple in operation and high in automation degree.

Description

Technical Field

[0001] The utility model belongs to the technical field of punching machine processing, and particularly relates to a finished product receiving hand for an up-and-down blanking punching machine. Background Technique

[0002] A punching machine is a stamping press. Stamping production mainly targets sheet materials. Through molds, it can perform operations such as blanking, punching, forming, deep drawing, trimming, fine blanking, shaping, riveting, and extrusion. It has the advantages of low technical requirements for operators and the ability to produce products that cannot be achieved by mechanical processing through various mold applications. Therefore, its uses are becoming more and more extensive. After the material is processed and formed by the punching machine, a receiving mechanism is needed to cooperate for blanking to improve processing efficiency. Most of the existing receiving mechanisms have complex structures.

[0003] A patent with the publication number CN215237388U discloses an automatic continuous receiving device for a punching machine, including a punching machine, a receiving mechanism, and a conveying mechanism. An electric push rod is arranged on the punching machine, and a push plate is fixedly arranged at the output end of the electric push rod; the receiving mechanism is arranged between the punching machine and the conveying mechanism. The receiving mechanism includes a rotatable rotating column, and a receiving cantilever is arranged on the side wall of the rotating column. The receiving cantilever includes a horizontal plate and a U-shaped frame. A receiving disc is rotatably arranged in the U-shaped frame, and a motor c is fixedly arranged on the side wall of the U-shaped frame. The output end of the motor c passes through the U-shaped frame and is fixedly connected to the receiving disc; the receiving mechanism further includes a bottom plate and a fixing plate. The fixing plate is located above the bottom plate, and a motor a is fixedly arranged at the bottom of the fixing plate. The output end of the motor a is connected to the rotating column; a motor b is fixedly arranged at the top of the rotating column, and the output end of the motor b is connected to a lead screw.

[0004] In the process of receiving and discharging materials by the above device, multiple motors are required. First, motors a and b are used to adjust the position of the receiving cantilever. After adjusting the receiving cantilever to a position close to the punching machine workbench, the electric push rod is started to receive the workpiece. After the workpiece is received, motors a and b are controlled again to adjust the position of the receiving cantilever. When the receiving cantilever is adjusted above the conveying mechanism, motor c is started to drive the connecting disc to rotate, so as to slide the workpiece onto the conveyor belt to complete discharging. However, the process of receiving and discharging materials by the entire device is relatively cumbersome and the degree of automation is low. Repeatedly adjusting the position of the receiving cantilever by motors will waste a lot of time for the staff, and the overall practicality is not strong. Summary of the Utility Model

[0005] To solve the problems in the background technique, the utility model provides a finished product receiving hand for an up-and-down blanking punching machine.

[0006] To achieve the above purpose, the utility model provides the following technical solutions:

[0007] A finished product receiving arm of a loading and unloading punch press comprises a punch press, a receiving mechanism and a conveying mechanism, characterized in that the receiving mechanism is located between the punch press and the conveying mechanism, the punch press and the conveying mechanism both cooperate with the receiving mechanism, and the punch press is provided with a stamping assembly and a pushing assembly; the receiving mechanism comprises a bottom plate, a first limiting ring and a second limiting ring are fixedly arranged on the bottom plate, a sleeve is rotatably installed in the first limiting ring and the second limiting ring, a receiving arm that slides along the axial direction is provided on the sleeve, a rotating shaft is rotatably arranged on the receiving arm, a first gear is fixedly sleeved on the rotating shaft, and a receiving hopper is fixedly arranged at one end of the rotating shaft away from the receiving arm; a slideway is provided between the first limiting ring and the second limiting ring, and the receiving arm and the slideway are slidably matched; a rack is provided on the second limiting ring, and the first gear is contact-engaged with the rack. A limiting assembly is provided in the receiving arm, and the receiving mechanism is transmission-connected to a driving mechanism for driving the sleeve to rotate.

[0008] Furthermore, the stamping assembly includes a support column, the bottom of which is fixedly connected to the top of the punch press; a cylinder is fixedly arranged on the support column, the telescopic end of the cylinder passes through the support column, and the stamping die is fixedly arranged on the telescopic end of the cylinder.

[0009] Furthermore, the pusher assembly includes a push plate, an electric push rod is fixedly arranged on the top of the punch press, and the telescopic end of the electric push rod is fixedly connected to the push plate; the push plate is slidably connected to the punch press.

[0010] Furthermore, a fixed shaft is fixedly arranged on the top of the base plate, and the sleeve is rotatably sleeved on the fixed shaft; a bracket is fixedly arranged on the top of the fixed shaft, and the bracket is fixedly connected to the second limiting ring; fixed rods are fixedly arranged at both ends of the sleeve, a vertical rod is fixedly arranged between the two fixed rods, and the material receiving arm is slidably arranged on the vertical rod.

[0011] Furthermore, the driving mechanism includes a motor, a second gear is fixedly arranged at the bottom of the sleeve, and the second gear is movably sleeved on the outer surface of the fixed shaft; a limit block is fixedly sleeved on the fixed shaft, and the limit block is rotatably connected to the second gear; the motor is fixedly arranged on the top of the base plate, and a third gear is fixedly arranged at the output end of the motor, and the third gear is meshed with the second gear.

[0012] Furthermore, the limiting assembly includes a clamping block, a sliding groove is provided at one end of the material receiving arm away from the sleeve, and the rotating shaft is slidably arranged in the sliding groove; two limiting grooves are provided in the material receiving arm, the two limiting grooves are connected to the sliding groove, and the central axes of the two limiting grooves are perpendicular to the central axis of the sliding groove; a clamping block is slidably arranged in each of the limiting grooves, a spring is arranged between the clamping block and the limiting groove, one end of the spring is fixedly connected to the end of the clamping block away from the rotating shaft, and the other end of the spring is fixedly connected to the inner wall of the limiting groove on one side away from the rotating shaft; two clamping grooves are provided on the side wall of the rotating shaft, and the clamping block and the clamping groove are limited in cooperation.

[0013] Further, the limiting component includes a torsion spring sleeved on the rotating shaft. One end of the torsion spring is fixedly connected to the first gear, and the other end of the torsion spring is fixedly connected to the material receiving arm.

[0014] The present application has the following beneficial effects:

[0015] When the motor is started, the material receiving hopper will move downward during rotation. Moreover, when the material receiving hopper moves above the conveyor belt, it will automatically reverse and discharge materials. The entire working process is simple to operate and highly automated, without the need to repeatedly adjust the position of the material receiving hopper, saving time and effort. Description of the Drawings

[0016] By referring to the accompanying drawings and reading the following detailed description, the above and other objects, features, and advantages of the exemplary embodiments of the present utility model will become readily understood. In the drawings, several embodiments of the present utility model are shown in an exemplary rather than restrictive manner, and the same or corresponding reference numerals represent the same or corresponding parts, wherein:

[0017] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0018] Figure 2 is a schematic diagram of the internal structure of the material receiving mechanism of the present utility model;

[0019] Figure 3 is a schematic diagram of the structure of the material receiving hopper of the present utility model;

[0020] Figure 4 is a schematic diagram of the structure of the first gear of the present utility model;

[0021] Figure 5 is a schematic diagram of the structure of the torsion spring of the present utility model.

[0022] Explanation of the Reference Numerals in the Drawings:

[0023] 1. Punch press; 2. Support column; 3. Cylinder; 4. Stamping die; 5. Electric push rod; 6. Push plate; 7. Base plate; 8. First limiting ring; 9. Bracket; 10. Second limiting ring; 11. Slideway; 12. Fixed shaft; 13. Sleeve; 14. Fixed rod; 15. Vertical rod; 16. Material receiving arm; 17. Rotating shaft; 18. First gear; 19. Material receiving hopper; 20. Rack; 21. Second gear; 22. Limiting block; 23. Third gear; 24. Motor; 25. Block; 26. Slot; 27. Spring; 28. Connecting plate; 29. Conveyor belt; 30. Torsion spring. Detailed Embodiments

[0024] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Those skilled in the art should know that the embodiments described below are some, but not all, of the embodiments of the present disclosure. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0025] Embodiment 1

[0026] As Figures 1 - 4 shown, the technical solution adopted by the present utility model is as follows: A finished product receiving hand for a punching press for loading and unloading includes a punching press 1, a receiving mechanism, and a conveying mechanism. A punching component and a material pushing component are provided on the punching press 1.

[0027] The punching component includes a support column 2, the bottom of the support column 2 is fixedly connected to the top of the punching press 1. A top plate is provided at the top of the support column 2, and a cylinder 3 is fixedly arranged on the top plate. The telescopic end of the cylinder 3 vertically penetrates the top plate downward, and a punching die 4 is fixedly arranged at the telescopic end of the cylinder 3.

[0028] By placing the material to be punched below the punching die 4 and starting the cylinder 3, the cylinder 3 will drive the punching die 4 to move downward, thereby punching and shaping the material.

[0029] The material pushing component includes a push plate 6, an electric push rod 5 is fixedly arranged on the top of the punching press 1, and the telescopic end of the electric push rod 5 is fixedly connected to the push plate 6. The bottom of the push plate 6 is slidably connected to the top of the punching press 1.

[0030] The conveying mechanism includes a conveyor belt 29 that can automatically convey. The punching press 1 is located on the left side of the receiving mechanism, and the conveyor belt 29 is located on the right side of the receiving mechanism. By starting the electric push rod 5, the telescopic shaft of the electric push rod 5 will push the formed product to the right side of the punching press 1, thereby pushing the formed product towards the receiving mechanism.

[0031] The receiving mechanism includes a bottom plate 7, a first limiting ring 8 is fixedly arranged on the top of the bottom plate 7, and a fixed shaft 12 is fixedly arranged vertically on the top of the bottom plate 7. The fixed shaft 12 is located inside the first limiting ring 8.

[0032] A bracket 9 is fixedly arranged at the top of the fixed shaft 12. A second limiting ring 10 is fixedly arranged on the bracket 9. A connecting plate 28 is fixedly arranged at the bottom right of the second limiting ring 10. A rack 20 is fixedly arranged at the bottom of the connecting plate 28. There is a slideway 11 between the first limiting ring 8 and the second limiting ring 10. The end of the slideway 11 close to the punching machine 1 is higher than the end of the slideway 11 close to the conveyor belt 29. The ends of the slideway 11 close to the punching machine 1 and the end of the slideway 11 close to the conveyor belt 29 are both smooth tracks, and two inclined tracks are connected between the two smooth tracks. The two smooth tracks and the two inclined tracks are interconnected to jointly form an inclined and annular slideway 11.

[0033] A sleeve 13 is rotatably sleeved on the circumferential surface of the fixed shaft 12. Fixed rods 14 are fixedly arranged at the upper and lower ends of the sleeve 13. Two vertical rods 15 are fixedly arranged between the two fixed rods 14. The sleeve 13 is located between the two vertical rods 15, and each vertical rod 15 is a prism. A material receiving arm 16 is slidably arranged on the outer surface of the vertical rod 15. The material receiving arm 16 is both slidably and drivingly engaged with the slideway 11.

[0034] One end of the material receiving arm 16 away from the sleeve 13 is provided with a sliding groove, and a rotating shaft 17 is rotatably arranged in the sliding groove. A first gear 18 is fixedly sleeved on the rotating shaft 17. The first gear 18 is in contact meshing with the rack 20. One end of the rotating shaft 17 away from the material receiving arm 16 is fixedly provided with a material receiving hopper 19. When the material receiving hopper 19 is in the leftmost position, it is flush with the punching machine 1. When the material receiving hopper 19 is in the rightmost position, it cooperates with the conveyor belt 29.

[0035] A limiting component is arranged in the material receiving arm 16.

[0036] The limiting component includes a clamping block 25. Two limiting grooves are opened in the material receiving arm 16. The two limiting grooves are both communicated with the sliding groove, and the central axes of the two limiting grooves are perpendicular to the central axis of the sliding groove. A clamping block 25 is slidably arranged in each limiting groove. A spring 27 is arranged between the clamping block 25 and the limiting groove. One end of the spring 27 is fixedly connected to the end of the clamping block 25 away from the rotating shaft 17, and the other end of the spring 27 is fixedly connected to the inner wall of the side of the limiting groove away from the rotating shaft 17. Two clamping grooves 26 are opened on the side wall of the rotating shaft 17, and the clamping block 25 is in limiting clamping engagement with the clamping groove 26.

[0037] A driving mechanism for driving the sleeve 13 to rotate is arranged in the material receiving mechanism.

[0038] The driving mechanism includes a motor 24. A second gear 21 is fixedly arranged at the bottom of the sleeve 13, and the second gear 21 is movably sleeved on the outer surface of the fixed shaft 12. A limiting block 22 is fixedly sleeved on the fixed shaft 12. The limiting block 22 is located below the second gear 21 and is rotatably connected to the second gear 21. The motor 24 is fixedly arranged on the top of the bottom plate 7, and a third gear 23 is fixedly arranged at the output end of the motor 24. The third gear 23 meshes with the second gear 21.

[0039] In the initial state, the receiving hopper 19 is located at the leftmost end and contacts the punching machine 1. Start the electric push rod 5 to push the formed product into the receiving hopper 19. Since the rotating shaft 17 is abutted and clamped by the clamping block 25, the receiving hopper 19 is in a horizontal state at this time and will not rotate.

[0040] Start the motor 24. The output end of the motor 24 will drive the third gear 23 to rotate. The rotation of the third gear 23 drives the second gear 21 to rotate, and the rotation of the second gear 21 drives the sleeve 13 to rotate.

[0041] Since the slideway 11 is in sliding fit with the receiving arm 16, the receiving arm 16 will slide along the direction of the slideway 11 when rotating, so that the receiving hopper 19 gradually moves downward during the rotation process.

[0042] When the receiving arm 16 rotates to the right end, the slideway 11 is no longer inclined. At this time, the receiving arm 16 also slides to the lowermost end of the vertical rod 15. As the sleeve 13 continues to rotate, the receiving arm 16 will drive the first gear 18 to move below the rack 20.

[0043] Since the first gear 18 meshes with the rack 20, the first gear 18 will rotate. The rotation of the first gear 18 drives the rotating shaft 17 to rotate, and the rotation of the rotating shaft 17 drives the receiving hopper 19 to rotate. The rotation of the receiving hopper 19 causes the product in the receiving hopper 19 to fall onto the conveyor belt 29, thus completing the discharging.

[0044] When the rotating shaft 17 rotates, it will push open the two clamping blocks 25, making the compression amount of the spring 27 larger and releasing the limit of the clamping block 25 on the rotating shaft 17. As the sleeve 13 rotates, when the first gear 18 is completely disengaged from the rack 20, the receiving hopper 19 will rotate one week and return to the initial horizontal state. At this time, the spring 27 will push the clamping block 25 to be stuck in the clamping groove 26 again to complete the limit of the rotating shaft 17.

[0045] After the discharging is completed, as the sleeve 13 rotates, the receiving arm 16 will move upward along the slideway 11. When it moves to the leftmost end of the slideway 11, it contacts the punching machine 1 and returns to the initial state to receive materials.

[0046] Working principle

[0047] When using this device, the staff place the material to be stamped under the stamping die 4, and then start the cylinder 3. The cylinder 3 will drive the stamping die 4 to move downward, thereby stamping and plastifying the material. Then start the cylinder 3 to drive the stamping die 4 back to the initial position.

[0048] Start the electric push rod 5, and the telescopic shaft of the electric push rod 5 will push the formed product to move to the right side of the punching machine 1. In the initial state, one of the receiving hoppers 19 is flush with the punching machine 1, so the push plate 6 will push the product into the receiving hopper 19.

[0049] Since the rotating shaft 17 inside the receiving arm 16 is resisted by the clamping block 25 through the spring 27, the receiving hopper 19 is in a horizontal state and will not rotate.

[0050] Start the motor 24, and the output end of the motor 24 will drive the third gear 23 to rotate. The rotation of the third gear 23 drives the second gear 21 to rotate. The rotation of the second gear 21 will drive the sleeve 13 to rotate. The rotation of the sleeve 13 drives the fixed rod 14 and the vertical rod 15 to rotate. The vertical rod 15 will drive the receiving arm 16 to rotate, so that the receiving hopper 19 containing the product on the left rotates accordingly.

[0051] Since the slideway 11 is slidably matched with the receiving arm 16, the receiving arm 16 will slide along the direction of the slideway 11 when rotating, so that the receiving hopper 19 gradually moves downward during the rotation process.

[0052] When the receiving arm 16 rotates to the right end, the slideway 11 is no longer inclined. At this time, the receiving arm 16 also slides to the lowest end of the vertical rod 15. As the sleeve 13 continues to rotate, the receiving arm 16 will drive the first gear 18 to move below the rack 20.

[0053] Since the first gear 18 meshes with the rack 20, the first gear 18 will rotate. The rotation of the first gear 18 will drive the rotating shaft 17 to rotate. The rotation of the rotating shaft 17 will drive the receiving hopper 19 to rotate. The rotation of the receiving hopper 19 causes the product in the receiving hopper 19 to fall onto the conveyor belt 29 and is thus conveyed to the next place by the conveyor belt 29.

[0054] When the rotating shaft 17 rotates, it will push open the two clamping blocks 25, making the compression amount of the spring 27 larger, and at the same time releasing the limit of the clamping block 25 on the rotating shaft 17.

[0055] As the sleeve 13 rotates, when the first gear 18 is completely disengaged from the rack 20, the receiving hopper 19 will rotate one week back to the initial horizontal position. At this time, the spring 27 will push the clamping block 25 to be stuck in the card slot 26 to complete the limit of the rotating shaft 17, facilitating the next material receiving. The receiving arm 16 on the other side is the opposite, thus realizing one material receiving and one material discharging, improving the overall working efficiency.

[0056] Example 2

[0057] Compared with Example 1, in this Example 2, the spring 27 and the clamping block 25 are not provided in the limiting component. The limiting component includes a torsion spring 30, the torsion spring 30 is sleeved on the rotating shaft 17, one end of the torsion spring 30 is fixedly connected with the first gear 18, and the other end of the torsion spring 30 is fixedly connected with the material receiving arm 16.

[0058] The rotating shaft 17 is restricted by setting the torsion spring 30. Since the torsion spring 30 is arranged at the rotating part of the material receiving arm 16 and the rotating shaft 17, the material receiving hopper 19 will not rotate in the horizontal state.

[0059] With the start of the motor 24, since the first gear 18 meshes with the rack 20, the rotation of the first gear 18 will drive the rotation of the rotating shaft 17, thereby driving the rotation of the material receiving arm 16. And when the rotating shaft 17 rotates, it will generate a torsion force on the torsion spring 30.

[0060] When the first gear 18 is completely disengaged from the rack 20, the torsion spring 30 will drive the material receiving hopper 19 to rotate in the reverse direction for one week to return to the initial horizontal state through its own torsion force, so as to facilitate the next material receiving.

[0061] Working principle

[0062] Compared with Example 1, in this Example 2, the rotating shaft 17 is restricted by setting the torsion spring 30. Since the torsion spring 30 is arranged at the rotating part of the material receiving arm 16 and the rotating shaft 17, the material receiving hopper 19 will not rotate in the horizontal state.

[0063] With the start of the motor 24, since the first gear 18 meshes with the rack 20, the rotation of the first gear 18 will drive the rotation of the rotating shaft 17, thereby driving the rotation of the material receiving arm 16. And when the rotating shaft 17 rotates, it will generate a torsion force on the torsion spring 30.

[0064] When the first gear 18 is completely disengaged from the rack 20, the torsion spring 30 will drive the material receiving hopper 19 to rotate in the reverse direction for one week to return to the initial horizontal state through its own torsion force, so as to facilitate the next material receiving.

Claims

1. A finished product receiving arm for a loading and unloading punch press, comprising a punch press (1), a receiving mechanism and a conveying mechanism, characterized in that: The material receiving mechanism is located between the punch press (1) and the transmission mechanism. The punch press (1) and the transmission mechanism cooperate with the material receiving mechanism. The punch press (1) is provided with a punching assembly and a material pushing assembly. The material receiving mechanism comprises a bottom plate (7). A first limiting ring (8) and a second limiting ring (10) are fixedly arranged on the bottom plate (7). A sleeve (13) is rotatably installed in the first limiting ring (8) and the second limiting ring (10). A material receiving arm (16) that slides along the axial direction is provided on the sleeve (13). A rotating shaft (17) is rotatably arranged on the material receiving arm (16). The rotating shaft (17) A first gear (18) is fixedly sleeved on the upper part, and a receiving hopper (19) is fixedly arranged at one end of the rotating shaft (17) away from the receiving arm (16); a slideway (11) is provided between the first limiting ring (8) and the second limiting ring (10), and the receiving arm (16) and the slideway (11) are slidably matched; a rack (20) is provided on the second limiting ring (10), and the first gear (18) and the rack (20) are contact-engaged, and a limiting component is provided in the receiving arm (16), and the receiving mechanism is transmission-connected to a driving mechanism for driving the sleeve (13) to rotate.

2. The finished product receiving arm of the loading and unloading punch press according to claim 1 is characterized in that: The punching assembly comprises a support column (2), the bottom of the support column (2) being fixedly connected to the top of the punching machine (1); a cylinder (3) is fixedly arranged on the support column (2), the telescopic end of the cylinder (3) passes through the support column (2), and a punching die (4) is fixedly arranged at the telescopic end of the cylinder (3).

3. The finished product receiving arm of the loading and unloading punch press according to claim 1 is characterized in that: The pusher assembly comprises a push plate (6); an electric push rod (5) is fixedly arranged on the top of the punch press (1); the telescopic end of the electric push rod (5) is fixedly connected to the push plate (6); and the push plate (6) is slidably connected to the punch press (1).

4. The finished product receiving arm of the loading and unloading punch press according to claim 1 is characterized in that: A fixed shaft (12) is fixedly arranged on the top of the bottom plate (7), and the sleeve (13) is rotatably sleeved on the fixed shaft (12); a bracket (9) is fixedly arranged on the top of the fixed shaft (12), and the bracket (9) is fixedly connected to the second limiting ring (10); fixed rods (14) are fixedly arranged on both ends of the sleeve (13), a vertical rod (15) is fixedly arranged between the two fixed rods (14), and a material receiving arm (16) is slidably arranged on the vertical rod (15).

5. The finished product receiving arm of the loading and unloading punch press according to claim 4 is characterized in that: The driving mechanism comprises a motor (24); a second gear (21) is fixedly arranged at the bottom of the sleeve (13); the second gear (21) is movably sleeved on the outer surface of the fixed shaft (12); a limit block (22) is fixedly sleeved on the fixed shaft (12); the limit block (22) is rotatably connected to the second gear (21); the motor (24) is fixedly arranged on the top of the bottom plate (7); a third gear (23) is fixedly arranged at the output end of the motor (24); the third gear (23) is meshed with the second gear (21).

6. The finished product receiving arm of the loading and unloading punch press according to claim 1 is characterized in that: The limiting assembly comprises a clamping block (25); a sliding groove is provided at one end of the material receiving arm (16) away from the sleeve (13), and the rotating shaft (17) is slidably arranged in the sliding groove; two limiting grooves are provided in the material receiving arm (16), and the two limiting grooves are both connected to the sliding groove, and the central axes of the two limiting grooves are perpendicular to the central axis of the sliding groove; a clamping block (25) is slidably arranged in each of the limiting grooves, and a spring (27) is provided between the clamping block (25) and the limiting groove, one end of the spring (27) is fixedly connected to one end of the clamping block (25) away from the rotating shaft (17), and the other end of the spring (27) is fixedly connected to the inner wall of the limiting groove on one side away from the rotating shaft (17); two clamping grooves (26) are provided on the side wall of the rotating shaft (17), and the clamping block (25) and the clamping groove (26) are limitedly matched.

7. The finished product receiving arm of the loading and unloading punch press according to claim 1 is characterized in that: The limiting assembly comprises a torsion spring (30), which is sleeved on the rotating shaft (17), one end of the torsion spring (30) is fixedly connected to the first gear (18), and the other end of the torsion spring (30) is fixedly connected to the material receiving arm (16).

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