Method for continuous processing of modular parts

Abstract

The application discloses a kind of continuous processing method of combined parts, comprising the following steps: material belt is arranged between a plurality of relatively arranged punch punch and stamping die, moves material belt so that each forming area can be sequentially intermittently moved from initial position to a plurality of die-cutting positions, the forming area with riveting through hole obtained in step two is sequentially intermittently moved to at least one riveting position, and the riveting punch and riveting die are arranged opposite in each riveting position, when being in open die state, the rivet to be riveted is sent to the riveting through hole directly below the forming area, when being in closed die state, the rivet is pressed on the riveting through hole by the riveting punch and riveting die, so that the forming area with 2 rivets obtained in step three is sequentially intermittently moved to a plurality of die-cutting positions, so that the stamping through hole is obtained between the 2 rivets in the forming area on the material belt. The application improves the efficiency of production, saves processing procedure and equipment cost.

Description

Technical Field

[0001] This invention relates to a continuous processing method for modular parts, belonging to the field of medical device processing technology. Background Technology

[0002] Riveting, a common joining method in machining, is mainly used to join two plates of similar thickness by drilling holes in them, inserting rivets, and then using a die to deform the rivets. Currently, drilling and riveting require two separate machines, resulting in low efficiency. Summary of the Invention

[0003] The purpose of this invention is to provide a continuous processing method for modular parts, which integrates stamping and riveting to obtain stamped and riveted parts, thereby improving production efficiency and saving processing steps and equipment costs.

[0004] To achieve the above objectives, the technical solution adopted by the present invention is: a continuous processing method for modular parts, comprising the following steps: Step 1: The strip is placed between several sets of oppositely arranged stamping punches and stamping dies. The intermittently movable strip has several forming areas spaced apart along its length. At least one part can be processed in each forming area. The component includes: a stamped single piece with a stamped through hole, two riveting through holes on both sides of the stamped through hole, and rivets that are riveted and connected to the riveting through holes respectively. Step 2: Move the strip so that each forming area can move intermittently from its initial position to several punching positions. Each punching position has a set of oppositely arranged punching punches and punching dies. When the forming area on the strip moves to the punching position, the punching punch and punching die at the corresponding punching position close together to punch the forming area on the strip, thereby obtaining two riveting through holes in the forming area on the strip. Step 3: The forming area with riveting through holes obtained in Step 2 is intermittently moved to at least one riveting position. At each riveting position, a riveting punch and a riveting die are set up opposite each other. When the mold is open, the rivet to be riveted is sent to the riveting through hole in the forming area. When the mold is closed, the rivet is pressed onto the riveting through hole by the riveting punch and the riveting die. Step 4: Continue to move the strip so that the forming area with two rivets obtained in Step 3 moves intermittently to several punching positions, thereby obtaining a punched through hole between the two rivets in the forming area on the strip. Step 5: Continue moving the material strip so that the forming area obtained in Step 4 moves intermittently to the blanking and punching position. Use the blanking tool to punch the forming area to obtain the part.

[0005] The following are further improvements to the above technical solution: 1. In the above scheme, there are two riveting positions in step three, which are set diagonally opposite each other.

[0006] 2. In the above scheme, the riveting die in step three further includes: a movable block installed on the lower template and corresponding to the riveting punch; a groove is formed on the lower surface of the movable block, which can move a stroke H1 in the vertical direction; a pin hole communicating with the groove is formed on the upper surface of the movable block; the main body of a limiting pin, which can move a stroke H2 in the vertical direction, slides in contact with the inner wall of the pin hole; a needle guide portion extending upward from the pin hole is provided in the center of the upper surface of the main body; a first flange portion extending radially outward is provided at the lower end of the main body; the lower end of a first spring fitted on the limiting pin is pressed in contact with the upper surface of the first flange portion; the upper end of the first spring is embedded in the groove formed on the lower surface of the movable block; H1 > H2; and when in the mold-opening state, the movable block is higher than the upper surface of the lower template; when in the mold-closed state, the movable block moves down H1 and is flush with the upper surface of the lower template; and moves down H2 so that the upper surface of the main body of the limiting pin is flush with the upper surface of the movable block.

[0007] 3. In the above scheme, a partition plate and a base plate are stacked sequentially on the lower surface of the lower template. A stop block is installed on the upper surface of the partition plate and directly below the movable block. The stop block has a through hole for the first flange portion of the limiting pin to be inserted. The upper end of a pin that can move in the vertical direction passes through the partition plate and presses against the lower surface of the limiting pin. The lower end of the pin has a second flange portion that extends radially outward. A blind hole is opened on the upper surface of the base plate for the second flange portion to be inserted. The upper end of a second spring that is inserted into the blind hole presses against the lower surface of the second flange portion. When the mold is open, there is a distance H1 between the movable block and the stop block, and a distance H2 between the limiting pin and the partition plate. The upper surface of the second flange portion is in contact with the lower surface of the partition plate. When the mold is closed, the movable block is in contact with the stop block, the limiting pin is in contact with the partition plate, and there is a distance H2 between the upper surface of the second flange portion and the lower surface of the partition plate.

[0008] 4. In the above scheme, step three is based on a feeding mechanism for transporting rivets to the riveting through hole directly below the forming area. It includes: a bracket and a base plate movably mounted on the bracket. The base plate, which can move perpendicular to the material strip moving direction, has a vertically penetrating mounting groove at one end near the material strip. A sub-guide rail extending along the moving direction of the base plate is mounted on the upper surface of the base plate and on both sides of the mounting groove. A movable plate with a sub-slider mounted on the lower surface is movably mounted on the base plate through the mutually cooperating sub-slider and sub-guide rail. The end of the movable plate opposite to the material strip is connected to a sub-cylinder mounted on the upper surface of the base plate. Below the movable plate and within the mounting groove, there is a fixed base and vertical cylinders and movable supports located on both sides of the fixed base. The vertically arranged fixed base and vertical cylinders are each mounted on the lower surface of the movable plate. The movable support is movably mounted on the side of the fixed base near the material belt and is connected to the piston rod of the vertical cylinder. A pneumatic gripper and a vertical pressure head are mounted on the vertically movable support. The vertical pressure head is located on the side of the pneumatic gripper near the material belt and is collinear with the pneumatic gripper in the length direction of the sub-guide rail, and the lower end of the vertical pressure head is lower than the lower end of the pneumatic gripper.

[0009] 5. In the above scheme, a feeding assembly that cooperates with a pneumatic gripper is provided between the support and the material belt and below the substrate, away from the material belt. Two guide rails extending along their length direction are installed parallel to and spaced apart on the lower surface of the substrate. At least two sliders that cooperate with each of the guide rails are installed at intervals on the support. A feeding cylinder is installed on the support and outside the substrate. The piston rod of the feeding cylinder is connected to the substrate through a connecting block.

[0010] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art: 1. The continuous processing method for modular parts of the present invention continuously punches and cuts the strip to continuously obtain stamped single parts, while placing the riveting punch and riveting die on the stamping equipment to achieve integrated processing of stamping and riveting, obtaining stamped and riveted parts, improving production efficiency, and saving processing steps and equipment costs; furthermore, it causes the forming area with two rivets obtained in step three to move intermittently to several punching positions, thereby obtaining a punched through hole between the two rivets in the forming area on the strip. The punched through hole is processed after the riveting operation is completed, which can effectively ensure the structural strength of the strip during the riveting operation, avoid the situation where the strip is locally deformed due to excessive force applied to the strip during the riveting process, and improve the processing accuracy and yield of the finished product.

[0011] 2. The continuous processing method for the modular parts of the present invention further includes a riveting die comprising: a movable block mounted on a lower template and corresponding to a riveting punch; a groove formed on the lower surface of the movable block, which can move a stroke H1 in the vertical direction; a pin hole communicating with the groove formed on the upper surface of the movable block; a main body of a limiting pin, which can move a stroke H2 in the vertical direction, slidingly contacting the inner wall of the pin hole; a guide pin portion extending upward from the pin hole at the center of the upper surface of the main body; a first flange portion extending radially outward at the lower end of the main body; and the lower end of a first spring fitted on the limiting pin pressing against the upper surface of the first flange portion. The upper end of the first spring is embedded in a groove on the lower surface of the movable block, where H1 > H2. When the mold is open, the movable block is higher than the upper surface of the lower mold plate. When the mold is closed, the movable block moves down H1 and becomes flush with the upper surface of the lower mold plate. Moving down H2 makes the upper surface of the main body of the limiting pin flush with the upper surface of the movable block. This allows the limiting pin to support the rivet during mold closing to ensure the stability of the riveting. It also allows the rivet that has been riveted to the strip to separate from the limiting pin during mold opening, preventing the strip from getting stuck on the limiting pin and affecting the normal operation of subsequent processes, thus improving the stability of the processing. Attached Figure Description

[0012] Appendix Figure 1 This is a schematic diagram of the product of the present invention before riveting; Appendix Figure 2 This is a schematic diagram of the finished product after riveting according to the present invention; Appendix Figure 3 This is a front view of the strip structure at each station in the continuous processing method of the modular parts of the present invention; Appendix Figure 4 This is a three-dimensional structural diagram of the strip in the continuous processing method of the combined parts of the present invention; Appendix Figure 5 This is a partial structural cross-sectional view of the riveted joint; Appendix Figure 6 This is a partial structural diagram of the mold based on this invention in the mold-closed state; Appendix Figure 7 This is a partial structural cross-sectional view of the mold on which the present invention is based, in the mold-closed state. Appendix Figure 8 for Figure 7 Enlarged view of a local structure in the image; Appendix Figure 9 This is a partial structural cross-sectional view of the mold on which the present invention is based, in the mold-opening state. Appendix Figure 10 for Figure 9 Enlarged view of a local structure in the image; Appendix Figure 11 This is a schematic diagram of the feeding mechanism upon which the present invention is based; Appendix Figure 12 for Figure 11 Enlarged view of point A in the middle; Appendix Figure 13 This is a partial structural diagram of the feeding mechanism upon which the present invention is based; Appendix Figure 14 for Figure 13 Enlarged view of a local structure in the image; Appendix Figure 15 for Figure 14 A cross-sectional view at point BB.

[0013] In the above figures: 1. Strip material; 2. Stamping punch; 3. Stamping die; 4. Forming area; 5. Riveting punch; 6. Riveting die; 7. Movable block; 8. Groove; 9. Pin hole; 10. Limiting pin; 11. Main body; 12. Guiding pin part; 13. First flange part; 14. First spring; 15. Lower template; 16. Partition plate; 17. Base plate; 18. Stop block; 19. Through hole; 20. Pin; 21. Second flange part; 22. Blind hole; 23. Second spring; 31. Bracket; 32. Base plate; 321. Mounting groove; 331. Guide rail; 332 34. Slider; 35. Feeding cylinder; 36. Fixed seat; 37. Vertical cylinder; 38. Movable support; 39. Vertical part; 30. Horizontal part; 31. Pneumatic gripper; 32. Clamping cylinder; 33. First chuck; 34. Second chuck; 35. Clamping area; 46. Strip block; 47. Sub-guide rail; 48. Movable plate; 49. Sub-slider; 40. Sub-cylinder; 41. Vertical pressure head; 42. Alternating through groove; 43. Stop bar; 100. Part; 101. Stamped single piece; 102. Stamped through hole; 103. Riveting through hole; 104. Rivet. Implementation

[0014] The present patent can be further understood through the specific embodiments given below, but they are not intended to limit the present patent.

[0015] The purpose of this application is to develop a stamped part with riveting rivets. The product consists of two parts, as shown in the attached document. Figure 1 As shown, 104 is a rivet, and 101 is a stamped part. The stamped part has two riveting through holes 103 and a stamped through hole 102 located between the two riveting through holes 103. The two rivets 104 are riveted into the two riveting through holes 103 on the stamped part 101 to obtain the following result. Figure 2 The finished product shown.

[0016] The conventional development method is to obtain a stamped single part 101 by continuous die stamping, then manually place two rivets on the body of the stamped single part 101, and then manually press the rivets and the stamped single part together using a set of riveting dies.

[0017] This application combines the riveting process into the progressive die stamping process, eliminating the manual riveting device and using a robotic arm to feed rivets into the stamping die from the outside. The riveting die feature is designed into the structure of the progressive die. Then, the die feeds the rivets when it opens during stamping, and presses the rivets into the product during the die closing process, thereby reducing manpower, saving processes, improving product efficiency, and reducing costs.

[0018] Example 1: A continuous machining method for a modular part, comprising the following steps: Step 1: The strip 1 is placed between several sets of oppositely arranged stamping punches 2 and stamping dies 3. The strip 1, which can move intermittently, has several forming areas 4 spaced apart along its length. At least one part 100 can be processed in each forming area 4. The part 100 includes: a stamped single piece 101 with a stamped through hole 102, two riveting through holes 103 opened on both sides of the stamped through hole 102, and rivets 104 respectively riveted and connected in the riveting through holes 103. Step 2: Move the strip 1 so that each forming area 4 can be moved intermittently from the initial position to several punching positions. Each punching position has a set of oppositely arranged punching punches 2 and punching dies 3. When the forming area 4 on the strip 1 moves to the punching position, the punching punches 2 and punching dies 3 at the corresponding punching position close to punch the forming area 4 on the strip 1, thereby obtaining two riveting through holes 103 in the forming area 4 on the strip 1. Step 3: The forming area 4 with riveting through hole 103 obtained in Step 2 is intermittently moved to at least one riveting position. At each riveting position, a riveting punch 5 and a riveting die 6 are provided opposite to each other. When the mold is open, the rivet 104 to be riveted is sent to the riveting through hole 103 directly below the forming area 4. When the mold is closed, the rivet 104 is pressed onto the riveting through hole 103 by the riveting punch 5 and the riveting die 6. Step 4: Continue to move the strip 1 so that the forming area 4 with two rivets 104 obtained in Step 3 moves intermittently to several punching positions, thereby obtaining a punched through hole 102 between the two rivets 104 in the forming area 4 on the strip 1. Step 5: Continue to move the material strip 1 so that the forming area 4 obtained in Step 4 moves intermittently to the blanking and punching position. Use the blanking tool to punch the forming area 4 to obtain part 100.

[0019] Example 2: A continuous machining method for a modular part, comprising the following steps: Step 1: The strip 1 is placed between several sets of oppositely arranged stamping punches 2 and stamping dies 3. The strip 1, which can move intermittently, has several forming areas 4 spaced apart along its length. At least one part 100 can be processed in each forming area 4. The part 100 includes: a stamped single piece 101 with a stamped through hole 102, two riveting through holes 103 opened on both sides of the stamped through hole 102, and rivets 104 respectively riveted and connected in the riveting through holes 103. Step 2: Move the strip 1 so that each forming area 4 can be moved intermittently from the initial position to several punching positions. Each punching position has a set of oppositely arranged punching punches 2 and punching dies 3. When the forming area 4 on the strip 1 moves to the punching position, the punching punches 2 and punching dies 3 at the corresponding punching position close to punch the forming area 4 on the strip 1, thereby obtaining two riveting through holes 103 in the forming area 4 on the strip 1. Step 3: The forming area 4 with riveting through hole 103 obtained in Step 2 is intermittently moved to at least one riveting position. At each riveting position, a riveting punch 5 and a riveting die 6 are provided opposite to each other. When the mold is open, the rivet 104 to be riveted is sent to the riveting through hole 103 directly below the forming area 4. When the mold is closed, the rivet 104 is pressed onto the riveting through hole 103 by the riveting punch 5 and the riveting die 6. Step 4: Continue to move the strip 1 so that the forming area 4 with two rivets 104 obtained in Step 3 moves intermittently to several punching positions, thereby obtaining a punched through hole 102 between the two rivets 104 in the forming area 4 on the strip 1. Step 5: Continue to move the material strip 1 so that the forming area 4 obtained in Step 4 moves intermittently to the blanking and punching position. Use the blanking tool to punch the forming area 4 to obtain part 100.

[0020] There are two riveting positions in step three, which are diagonally opposite each other. By using two sets of staggered feeding mechanisms, two rivets can be fed at once, improving processing efficiency. The riveting die 6 in step three further includes: a movable block 7 mounted on the lower template 15 and corresponding to the riveting punch 5; a groove 8 formed on the lower surface of the movable block 7, which can move a stroke H1 in the vertical direction; a pin hole 9 communicating with the groove 8 formed on the upper surface of the movable block 7; a main body 11 of a limiting pin 10, which can move a stroke H2 in the vertical direction, slidingly contacting the inner wall of the pin hole 9; a guide pin portion 12 extending upward from the pin hole 9 at the center of the upper surface of the main body 11; and a lower end of the main body 11 having... A first flange portion 13 extends radially outward, and the lower end of a first spring 14 fitted on a limiting pin 10 presses against the upper surface of the first flange portion 13. The upper end of the first spring 14 is embedded in a groove 8 opened on the lower surface of the movable block 7. H1 > H2. When the mold is open, the movable block 7 is higher than the upper surface of the lower template 15. When the mold is closed, the movable block 7 moves down H1 and is flush with the upper surface of the lower template 15. Moving down H2 makes the upper surface of the main body portion 11 of the limiting pin 10 flush with the upper surface of the movable block 7. A partition plate 16 and a base plate 17 are stacked sequentially on the lower surface of the lower template 15. A stop strip 18 is installed on the upper surface of the partition plate 16, directly below the movable block 7. The stop strip 18 has a through hole 19 for the first flange portion 13 of the limiting pin 10 to be inserted. The upper end of a vertically movable pin 20 passes through the partition plate 16 and presses against the lower surface of the limiting pin 10. The lower end of the pin 20 has a second flange portion 21 that extends radially outward. A blind hole 22 is provided on the upper surface of the base plate 17 for the second flange portion 21 to be inserted. The upper end of the second spring 23, which is embedded in the blind hole 22, is pressed against the lower surface of the second flange 21. When the mold is open, there is a gap H1 between the movable block 7 and the stop bar 18, and a gap H2 between the limiting pin 10 and the partition 16. The upper surface of the second flange 21 is in contact with the lower surface of the partition 16. When the mold is closed, the movable block 7 is in contact with the stop bar 18, the limiting pin 10 is in contact with the partition 16, and a gap H2 is between the upper surface of the second flange 21 and the lower surface of the partition 16.

[0021] Step 3 is based on a feeding mechanism for transporting rivets 104 to the riveting through hole 103 directly below the forming area 4. It includes a bracket 31 and a base plate 32 movably mounted on the bracket 31. The base plate 32, which can move perpendicular to the moving direction of the material strip 1, has a vertically penetrating mounting groove 321 at one end near the material strip 1. A sub-guide rail 40 extending along the moving direction of the base plate 32 is mounted on the upper surface of the base plate 32 and on both sides of the mounting groove 321. A movable plate 41 with a sub-slider 42 mounted on the lower surface is movably mounted on the base plate 32 through the sub-slider 42 and the sub-guide rail 40. The end of the movable plate 41 opposite to the material strip 1 is connected to a sub-cylinder 43 mounted on the upper surface of the base plate 32. Below the aforementioned movable plate 41 and within the mounting groove 321, a fixed base 35 and vertical cylinders 36 and movable supports 37 are respectively located on both sides of the fixed base 35. The vertically arranged fixed base 35 and vertical cylinders 36 are each mounted on the lower surface of the movable plate 41. The movable support 37 is movably mounted on the side of the fixed base 35 near the material belt 1 and connected to the piston rod of the vertical cylinder 36. A pneumatic gripper 38 is mounted on the vertically movable support 37. A vertical pressure head 44 is located on the side of the pneumatic gripper 38 near the material belt 1 and is collinear with the pneumatic gripper 38 in the length direction of the sub-guide rail 40. The lower end of the vertical pressure head 44 is lower than the lower end of the pneumatic gripper 38. Through the cooperation of the pneumatic gripper, the vertical pressure head and the sub-cylinder, the pneumatic gripper can automatically feed the rivets, and the vertical pressure head can immediately press the placed rivets down into the accurate position, which is convenient for subsequent riveting operations and improves the positional accuracy of feeding. A feeding assembly that cooperates with a pneumatic gripper 38 is provided between the support 31, which is located away from the material belt 1, and below the substrate 32. Two guide rails 331 extending along their length direction are installed parallel to and spaced apart on the lower surface of the substrate 32. At least two sliders 332 that cooperate with each of the guide rails 331 are spaced apart and installed on the support 31. A feeding cylinder 34 is installed on the support 31 and located outside the substrate 32. The piston rod of the feeding cylinder 34 is connected to the substrate 32 through a connecting block 35. By setting the fixed sliders and the movable guide rails on the substrate, automatic and continuous material picking and feeding operations are realized in a limited space. After the feeding is completed, the pneumatic gripper that performs the feeding operation can be completely away from the part to be riveted, avoiding interference with the subsequent riveting process. The aforementioned mounting groove 321 is located between two guide rails 331; when the piston rod of the feeding cylinder 34 is in the extended state and the piston rod of the sub-cylinder 43 is in the extended state, the aforementioned pneumatic gripper 38 holding the rivet 104 is located directly below the riveting through hole 103; when the piston rod of the feeding cylinder 34 is in the extended state and the piston rod of the sub-cylinder 43 is in the retracted state, the aforementioned vertical pressure head 44 is located directly above the rivet 104. The vertical part 371 of the movable support 37 is connected to the fixed base 35 by a slider and a slide rail. The pneumatic gripper 38 and the vertical pressure head 44 are both installed on the lower surface of the horizontal part 372 of the movable support 37. The lower end of the piston rod of the vertical cylinder 36 is connected to the lower end of the vertical part 371 of the movable support 37 by a strip block 39. The movable plate 41 is provided with a clearance groove 45 for the vertical part 371 of the movable support 37 to pass through. The upper end of the vertical part 371 of the movable support 37 passes through the clearance groove 45 and is equipped with a stop strip 46. The other end of the stop strip 46, which is connected to the vertical part 371 of the movable support 37 at one end, extends to the top of the movable plate 41. The pneumatic gripper 38 further includes a gripping cylinder 381 and a first chuck 382 and a second chuck 383 respectively mounted on the gripping cylinder 381. The opposing surfaces of the first chuck 382 and the second chuck 383 are each provided with a gripping groove that engages with the rivet 104, thereby forming a gripping area 384 between the two gripping grooves for the rivet 104 to be inserted.

[0022] Working principle: The rivets to be riveted are arranged sequentially on the feeding assembly. The vertical cylinder is placed in the retracted state to avoid interference with other components when the pneumatic gripper moves horizontally with the substrate. At the same time, the piston rod of the sub-cylinder is placed in the extended state. The piston rod of the feeding cylinder retracts so that the pneumatic gripper is above the rivet to be clamped, and the two chucks of the pneumatic gripper open. The piston rod of the vertical cylinder drives the movable support to move the pneumatic gripper downward, so that the two chucks of the pneumatic gripper are located on both sides of the upper end of the rivet to be clamped, and the clamping cylinder is driven to make the pneumatic gripper hold the rivet tightly. The piston rod of the vertical cylinder drives the pneumatic gripper to move upward. The piston rod of the feeding cylinder drives the pneumatic gripper to move with the substrate to below the riveting through hole formed in the corresponding forming area on the strip. The piston rod of the vertical cylinder drives the pneumatic gripper to move downward. At the same time, the two chucks of the pneumatic gripper open, placing the rivet on the movable block and allowing the guide pin of the limiting pin to pass through the through hole in the center of the rivet, thus achieving the initial positioning of the rivet. The piston rod of the vertical cylinder is reset upward, while the piston rod of the sub-cylinder is retracted, causing the vertical pressure head to move directly above the placed rivet. The piston rod of the vertical cylinder drives the vertical pressure head downward, pressing the rivet into the pinhole on the movable block, which facilitates subsequent riveting operations and ensures the accuracy of the rivet position.

[0023] When using the above-mentioned continuous processing method for combined parts, while continuously punching the strip to obtain stamped single parts, the riveting punch and riveting die are placed on the stamping equipment to achieve integrated processing of stamping and riveting, obtaining stamped and riveted parts, improving production efficiency and saving processing steps and equipment costs. Furthermore, the forming area with two rivets obtained in step three is intermittently moved to several punching positions, thereby obtaining a punched through hole between the two rivets in the forming area on the strip. The punched through hole is processed after the riveting operation is completed, which can effectively ensure the structural strength of the strip during the riveting operation, avoid the local deformation of the strip due to excessive force applied to the strip during riveting, and improve the processing accuracy and yield of the finished product. Furthermore, the main body of the limiting pin can support the rivet during mold closing to ensure the stability of the riveting, and the rivet that has been riveted to the strip can be separated from the main body of the limiting pin during mold opening to prevent the strip from getting stuck on the limiting pin and affecting the normal operation of the subsequent processes, thereby improving the stability of the processing.

[0024] The above embodiments are only for illustrating the technical concept and features of the present invention, and are intended to enable those skilled in the art to understand the content of the present invention and implement it accordingly. They should not be construed as limiting the scope of protection of the present invention. All equivalent changes or modifications made in accordance with the spirit and essence of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A method for continuous machining of a modular part, comprising the following steps: Step 1: The strip (1) is placed between several sets of stamping punches (2) and stamping dies (3) arranged opposite to each other. The strip (1) that can move intermittently has several forming areas (4) arranged at intervals along its length. At least one part (100) can be processed in each forming area (4). The feature is that the part (100) includes: a stamped single piece (101) having a stamped through hole (102), two riveting through holes (103) opened on both sides of the stamped through hole (102), and rivets (104) respectively riveted and connected in the riveting through hole (103). Step 2: Move the strip (1) so that each of the forming areas (4) can be moved intermittently from the initial position to several punching positions. Each punching position has a set of stamping punches (2) and stamping dies (3) arranged opposite to each other. When the forming area (4) on the strip (1) moves to the punching position, the stamping punches (2) and stamping dies (3) on the corresponding punching position close the die to punch the forming area (4) on the strip (1), thereby obtaining two riveting through holes (103) in the forming area (4) on the strip (1). Step 3: The forming area (4) with the riveting through hole (103) obtained in Step 2 is moved intermittently to at least one riveting position. At each riveting position, there is a riveting punch (5) and a riveting die (6) arranged opposite to each other. When the mold is open, the rivet (104) to be riveted is sent to the riveting through hole (103) in the forming area (4). When the mold is closed, the rivet (104) is pressed onto the riveting through hole (103) by the riveting punch (5) and the riveting die (6). The riveting die (6) further includes: a movable block (7) mounted on the lower template (15) and corresponding to the riveting punch (5); a groove (8) is formed on the lower surface of the movable block (7) which can move a stroke H1 in the vertical direction; a pin hole (9) communicating with the groove (8) is formed on the upper surface of the movable block (7); the main body (11) of a limiting pin (10) which can move a stroke H2 in the vertical direction slides in contact with the inner wall of the pin hole (9); a needle guide (12) extending upward from the pin hole (9) is provided in the center of the upper surface of the main body (11); and the lower end of the main body (11) has a... There is a first flange (13) extending radially outward. The lower end of a first spring (14) fitted on a limiting pin (10) is pressed against the upper surface of the first flange (13). The upper end of the first spring (14) is embedded in a groove (8) opened on the lower surface of the movable block (7). H1 > H2. When the mold is open, the movable block (7) is higher than the upper surface of the lower template (15). When the mold is closed, the movable block (7) moves down H1 and is flush with the upper surface of the lower template (15). When it moves down H2, the upper surface of the main body (11) of the limiting pin (10) is flush with the upper surface of the movable block (7). Step 4: Continue to move the strip (1) so that the forming area (4) with two rivets (104) obtained in Step 3 is moved intermittently to several punching positions, thereby obtaining a punched through hole (102) between the two rivets (104) in the forming area (4) on the strip (1). Step 5: Continue to move the strip (1) so that the forming area (4) obtained in Step 4 moves intermittently to the blanking and punching position. Use the blanking tool to punch the forming area (4) to obtain the part (100).

2. The continuous machining method for modular parts according to claim 1, characterized in that: There are two riveting positions in step three, and they are set diagonally opposite each other.

3. The continuous machining method for modular parts according to claim 1, characterized in that: A partition plate (16) and a base plate (17) are stacked sequentially on the lower surface of the lower template (15). A stop block (18) is installed on the upper surface of the partition plate (16) and directly below the movable block (7). The stop block (18) has a through hole (19) for the first flange (13) of the limiting pin (10) to be inserted. The upper end of a vertically movable pin (20) passes through the partition plate (16) and presses against the lower surface of the limiting pin (10). The lower end of the pin (20) has a second flange (21) that extends radially outward. A blind hole (21) is opened on the upper surface of the base plate (17) for the second flange (21) to be inserted. 22), the upper end of the second spring (23) embedded in the blind hole (22) is pressed against the lower surface of the second flange (21). When in the mold open state, there is a gap H1 between the movable block (7) and the stop block (18), and a gap H2 between the limit pin (10) and the partition (16). The upper surface of the second flange (21) is in contact with the lower surface of the partition (16). When in the mold closed state, the movable block (7) is in contact with the stop block (18), and the limit pin (10) is in contact with the partition (16). The upper surface of the second flange (21) is in contact with the lower surface of the partition (16).

4. The continuous machining method for combined parts according to any one of claims 1 to 3, characterized in that: Step 3 is based on a feeding mechanism for transporting rivets (104) to the riveting through hole (103) in the forming area (4) directly below it. The mechanism includes a bracket (31) and a base plate (32) movably mounted on the bracket (31). The base plate (32), which can move perpendicular to the moving direction of the strip (1), has a vertically penetrating mounting groove (321) at one end near the strip (1). A sub-guide rail (40) extending along the moving direction of the base plate (32) is mounted on the upper surface of the base plate (32) and on both sides of the mounting groove (321). A movable plate (41) with a sub-slider (42) mounted on the lower surface is movably mounted on the base plate (32) through the sub-slider (42) and the sub-guide rail (40). The end of the movable plate (41) opposite to the strip (1) is connected to a sub-cylinder (43) mounted on the upper surface of the base plate (32). Below the movable plate (41) and within the mounting groove (321), there is a fixed seat (35) and vertical cylinders (36) and movable supports (37) located on both sides of the fixed seat (35). The vertically arranged fixed seat (35) and vertical cylinders (36) are each installed on the lower surface of the movable plate (41). The movable support (37) is movably installed on the side of the fixed seat (35) near the material belt (1) and connected to the piston rod of the vertical cylinder (36). A pneumatic gripper (38) and a vertical pressure head (44) are installed on the movable support (37) which can move in the vertical direction. The vertical pressure head (44) is located on the side of the pneumatic gripper (38) near the material belt (1) and is collinear with the pneumatic gripper (38) in the length direction of the sub-guide rail (40). The lower end of the vertical pressure head (44) is lower than the lower end of the pneumatic gripper (38).

5. The continuous machining method for modular parts according to claim 4, characterized in that: A feeding assembly that cooperates with a pneumatic gripper (38) is provided between the support (31) and the material belt (1) and below the substrate (32). Two guide rails (331) extending along their length direction are installed parallel to and spaced apart on the lower surface of the substrate (32). At least two sliders (332) that cooperate with each guide rail (331) are installed on the support (31) at intervals. A feeding cylinder (34) is installed on the support (31) and outside the substrate (32). The piston rod of the feeding cylinder (34) is connected to the substrate (32) through a connecting block.

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