Punching die for punching and cutting end portion of rocker arm

Abstract

The application discloses a stamping die for punching and cutting of a rocker arm end, which comprises an upper die seat and a lower die seat, the lower die seat is provided with a wide end mounting seat and a narrow end mounting seat, the wide end mounting seat is provided with a wide end material supporting protrusion, and the wide end mounting seat is detachably provided with a wide end forming block; the narrow end mounting seat is provided with a narrow end material supporting protrusion in the middle, the narrow end mounting seat is detachably provided with a narrow end forming block on the side of the narrow end material supporting protrusion and close to a center section of the lower die seat, the narrow end mounting seat is detachably provided with an end forming block on the side of the narrow end material supporting protrusion and away from the center section of the lower die seat, the lower die seat is provided with a lower narrow end wedge seat, the lower narrow end wedge seat is slidably provided with a cutting wedge, and the cutting wedge is provided with a cutting knife block for cutting excess material on one side of the narrow end of a workpiece; the upper die seat is provided with an upper narrow end wedge seat, the upper narrow end wedge seat is slidably provided with a narrow end side punching wedge, and the narrow end side punching wedge is provided with a narrow end side punch.

Description

Technical Field

[0001] This invention relates to a stamping die for punching and cutting material at the end of a rocker arm. Background Technology

[0002] When automotive spring rocker arm housings are used in the final product, they need to be installed and mate with other parts, requiring high overall molding precision. The specific structure is as follows... Figure 1 As shown, the two extended sections are long and narrow at one end and wide and short at the other. The side walls at both ends extend slightly beyond the top wall and have side punches. The overall curved surface is quite complex, and it is easy to deform during processing, making it difficult to control the dimensions. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a stamping die for punching and cutting material at the end of a rocker arm with accurate forming and high yield.

[0004] To solve the above technical problems, the technical solution adopted by the present invention is as follows: a stamping die for punching and cutting material at the end of a rocker arm, including an upper die base and a lower die base. The lower die base is provided with a wide end mounting base and a narrow end mounting base. The wide end mounting base is provided with a wide end material support protrusion. The wide end mounting base is detachably provided with a wide end forming block. The wide end forming block is provided with a positioning pin that cooperates with the corresponding positioning hole on the workpiece. The wide end forming block is provided with punching die buttons corresponding to the three punching positions on the workpiece. The upper die base is provided with a corresponding punching punch. The wide end forming block is provided with a blanking groove corresponding to the side punching position on the workpiece to be processed. The wide end forming block is provided with two side punching die buttons that communicate with the blanking groove corresponding to the side punching position on the workpiece to be processed.

[0005] The upper die base is provided with a pair of opposing punching wedge seats, and a punching wedge is slidably provided on the punching wedge seats. The punching wedge is provided with a first punch that cooperates with the side punching die button; the lower die base is provided with a first punching drive block that drives the punching wedge to move.

[0006] The narrow end mounting base has a narrow end material support protrusion in the middle. A narrow end forming block is detachably provided on the narrow end mounting base near the center of the lower die base next to the narrow end material support protrusion. The narrow end forming block is also provided with a positioning pin that mates with the corresponding positioning hole on the workpiece. An end forming block is detachably provided on the narrow end mounting base away from the center of the lower die base next to the narrow end material support protrusion. An upper punching die button is provided on the end forming block corresponding to the punching hole to be processed on the top surface of the narrow end of the workpiece. A blanking groove that communicates with the upper punching die button is provided on the end forming block. An upper punch that mates with the upper punching die button is provided on the upper die base.

[0007] The lower die base is provided with a cutting wedge seat, on which a cutting wedge slides, and on which a cutting blade is provided to cut off the excess material on the narrow end of the workpiece; the upper die base is provided with a cutting drive block to drive the cutting wedge; the upper die base is provided with an upper narrow end wedge seat, on which a narrow end side punching wedge slides, and on which a narrow end side punch is provided; the end forming block is provided with a narrow end side punching die button that communicates with the blanking groove; the lower die base is provided with a second punching drive block to drive the narrow end side punching wedge; the middle of the upper die base is provided with a pressure block, and on which a relief hole is provided to avoid the first punch.

[0008] As a preferred embodiment, the lower mold base is provided with guide holes at each of its four corners, and the upper mold base is provided with corresponding guide posts at each of its four corners.

[0009] As a preferred embodiment, the lower mold base is provided with adjustable limiting blocks on both sides of the wide end mounting base and the narrow end mounting base to restrict the position of the workpiece edge.

[0010] As a preferred embodiment, the lower mold base is provided with lower guide seats on both sides corresponding to the workpiece, and the upper mold base is provided with two upper guide seats that cooperate with the sides of the corresponding lower guide seats away from the workpiece.

[0011] The beneficial effects of this invention are:

[0012] This mold features a compact design with a reasonable layout of processing mechanisms. By rationally setting the forming blocks, the amount of special steel used is reduced, thereby lowering production costs and reducing processing difficulty. By cutting off the L-shaped excess material on one side of the narrow end of the workpiece and simultaneously punching a side hole at the end of the narrow end of the workpiece on the other side, excessive deformation of the workpiece during processing is avoided. This ensures that the mold can produce products with reliable dimensions and improves the yield rate.

[0013] Because the lower mold base has guide holes at its four corners and the upper mold base has corresponding guide pillars at its four corners, the reliability of mold closing is increased.

[0014] Because the lower die base has adjustable limiting blocks on both the wide end mounting base and the narrow end mounting base to limit the position of the workpiece edge, it facilitates accurate workpiece positioning and further ensures stamping accuracy.

[0015] Because the lower mold base is provided with lower guide seats on both sides corresponding to the workpiece, and the upper mold base is provided with two upper guide seats that cooperate with the side of the corresponding lower guide seats away from the workpiece, the upper mold runs stably and accurately during the mold closing process, further ensuring the mold closing accuracy. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the housing of a car spring rocker arm.

[0017] Figure 2 This is a schematic diagram of the structure of the car spring rocker arm housing before it is stamped using this mold.

[0018] Figure 3 This is a schematic diagram of the structure of the car spring rocker arm housing after it has been stamped using this mold.

[0019] Figure 4 This is a schematic diagram of the lower mold structure of the present invention.

[0020] Figure 5 This is a schematic diagram of the upper mold structure of the present invention.

[0021] Figures 1 to 5 In the middle: 1 upper mold base, 2 lower mold base, 3 wide end mounting base, 4 narrow end mounting base, 5 wide end material support protrusion, 6 wide end forming block, 7 positioning pin, 8 punching die button, 9 punching punch, 10 side punching die button.

[0022] 11 Punching wedge seat, 12 Punching wedge, 13 First punch; 14 First punching drive block; 15 Pressure block, 16 Narrow end material support protrusion, 17 Narrow end forming block, 18 End forming block, 19 Upper punching die button, 20 Upper punch; 21 Limiting block.

[0023] 22 Cutting wedge seat, 23 Cutting wedge, 24 Cutting blade block; 25 Cutting drive block; 26 Upper narrow end wedge seat, 27 Narrow end side punching wedge, 28 Guide post, 29 Narrow end side punch, 30 Upper guide seat, 31 Second punching drive block; 32 Lower guide seat. Detailed Implementation

[0024] The specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0025] like Figures 1-5 As shown, the stamping die for punching and cutting material at the end of the rocker arm includes an upper die base 1 and a lower die base 2. The lower die base 2 is provided with a wide end mounting base 3 and a narrow end mounting base 4. The wide end mounting base 3 is provided with a wide end material support protrusion 5. The wide end mounting base 3 is detachably provided with a wide end forming block 6. The wide end forming block 6 is provided with a positioning pin 7 that cooperates with the corresponding positioning hole on the workpiece. The wide end forming block 6 is provided with punching die buttons 8 corresponding to the three punching positions on the workpiece. The upper die base 1 is provided with a corresponding punching punch 9. The wide end forming block 6 is provided with a blanking groove corresponding to the side punching position on the workpiece. The wide end forming block 6 is provided with two side punching die buttons 10 that communicate with the blanking groove corresponding to the side punching position on the workpiece.

[0026] The upper die base 1 is provided with a pair of opposing punching wedge seats 11, and a punching wedge 12 is slidably provided on the punching wedge seat 11. The punching wedge 12 is provided with a first punch 13 that cooperates with the side punching die button 10. The lower die base 2 is provided with a first punching drive block 14 that drives the punching wedge 12 to move. The upper die base 1 is provided with a pressure block 15 in the middle, and the pressure block 15 is provided with a relief hole to avoid the first punch 13.

[0027] The narrow end mounting base 4 has a narrow end material support protrusion 16 in the middle. A narrow end forming block 17 is detachably provided on the narrow end mounting base 4 near the center section of the lower die base 2 next to the narrow end material support protrusion 16. The narrow end forming block 17 is also provided with a positioning pin 7 that cooperates with the corresponding positioning hole on the workpiece. An end forming block 18 is detachably provided on the narrow end mounting base 4 away from the center section of the lower die base 2 next to the narrow end material support protrusion 16. An upper punching die button 19 is provided on the end forming block 18 corresponding to the punching position to be processed on the top surface of the narrow end of the workpiece. A blanking groove is provided on the end forming block 18 that communicates with the upper punching die button 19. An upper punch 20 that cooperates with the upper punching die button 19 is provided on the upper die base 1. The lower die base 2 has adjustable limiting blocks 21 on both sides of the wide end mounting base 3 and the narrow end mounting base 4 to limit the position of the workpiece edge.

[0028] The lower die base 2 is provided with a cutting wedge seat 22, and a cutting wedge 23 is slidably provided on the cutting wedge seat 22. The cutting wedge 23 is provided with a cutting blade block 24 for cutting off the excess material on the narrow end side of the workpiece. The upper die base 1 is provided with a cutting drive block 25 for driving the cutting wedge 23 to move. The upper die base 1 is provided with an upper narrow end wedge seat 26, and a narrow end side punching wedge 27 is slidably provided on the upper narrow end wedge seat 26. A narrow end side punch 29 is provided on the narrow end side punching wedge 27. The end forming block 18 is provided with a narrow end side punching die button 10 that communicates with the blanking groove. The lower die base 2 is provided with a second punching drive block 31 for driving the narrow end side punching wedge 27 to move.

[0029] The lower mold base 2 is provided with lower guide seats 32 on both sides corresponding to the workpiece, and the upper mold base 1 is provided with two upper guide seats 30 that cooperate with the sides of the corresponding lower guide seats 32 away from the workpiece. The lower mold base 2 is provided with guide holes at its four corners, and the upper mold base 1 is provided with corresponding guide posts 28 at its four corners.

[0030] When this stamping die is closed, the two L-shaped excess materials at the wide end of the workpiece are cut off, the two through holes on the top surface of the narrow end of the workpiece, the through holes on the convex hull and the through holes in the recessed hole in the middle of the convex hull are punched, the L-shaped excess material on one side of the narrow end of the workpiece is cut off, and the side hole is punched at the end of the narrow end sidewall of the workpiece on the other side, and the two sides of the workpiece located on the convex hull near the wide end are punched.

[0031] The above embodiments are merely illustrative of the principles and effects of the present invention, as well as some examples of its application, and are not intended to limit the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the inventive concept of the present invention, and these modifications and improvements are all within the scope of protection of the present invention.

Claims

1. A stamping die for punching and cutting material at the end of a rocker arm, comprising an upper die base and a lower die base, characterized in that: The lower die base is provided with a wide end mounting base and a narrow end mounting base. The wide end mounting base is provided with a wide end material support protrusion. The wide end mounting base is detachably provided with a wide end forming block. The wide end forming block is provided with a positioning pin that mates with the corresponding positioning hole on the workpiece. The wide end forming block is provided with a punching die button corresponding to the three punching holes on the workpiece. The upper die base is provided with a corresponding punching punch. The wide end forming block is provided with a blanking groove corresponding to the side punching hole to be processed on the workpiece. The wide end forming block is provided with two side punching die buttons that communicate with the blanking groove corresponding to the side punching hole to be processed on the workpiece. The upper die base is provided with a pair of opposing punching wedge seats, and a punching wedge is slidably provided on the punching wedge seats. The punching wedge is provided with a first punch that cooperates with the side punching die button. A pressure block is provided in the middle of the upper die base, and a relief hole is provided on the pressure block to avoid the first punch. The lower die base is provided with a first punching drive block to drive the movement of the punching wedge. The narrow end mounting base has a narrow end material support protrusion in the middle. A narrow end forming block is detachably provided on the narrow end mounting base near the center of the lower die base next to the narrow end material support protrusion. The narrow end forming block is also provided with a positioning pin that mates with the corresponding positioning hole on the workpiece. An end forming block is detachably provided on the narrow end mounting base away from the center of the lower die base next to the narrow end material support protrusion. An upper punching die button is provided on the end forming block corresponding to the punching hole to be processed on the top surface of the narrow end of the workpiece. A blanking groove that communicates with the upper punching die button is provided on the end forming block. An upper punch that mates with the upper punching die button is provided on the upper die base. The lower die base is provided with a cutting wedge seat, on which a cutting wedge slides, and on which a cutting blade is provided to cut off the excess material on the narrow end of the workpiece; the upper die base is provided with a cutting drive block to drive the cutting wedge; the upper die base is provided with an upper narrow end wedge seat, on which a narrow end side punching wedge slides, and on which a narrow end side punch is provided; the end forming block is provided with a narrow end side punching die button that communicates with the blanking groove; the lower die base is provided with a second punching drive block to drive the narrow end side punching wedge.

2. The stamping die for punching and cutting material at the end of the rocker arm as described in claim 1, characterized in that: The lower mold base is provided with guide holes at its four corners, and the upper mold base is provided with corresponding guide posts at its four corners.

3. The stamping die for punching and cutting material at the end of the rocker arm as described in claim 2, characterized in that: The lower mold base has adjustable limiting blocks on both sides of the wide end mounting base and the narrow end mounting base to restrict the position of the workpiece edge.

4. The stamping die for punching and cutting material at the end of the rocker arm as described in claim 3, characterized in that: The lower mold base is provided with lower guide seats on both sides corresponding to the workpiece, and the upper mold base is provided with two upper guide seats that cooperate with the sides of the corresponding lower guide seats away from the workpiece.

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