Piercing stamping die for torsion limiter cover plate

Abstract

The utility model discloses a piercing stamping die for a torsion limiter cover plate, which comprises a piercing male die, a stamping male die and a piercing female die, the piercing male die comprises a piercing section, a stamping section and a fixing section which are sequentially connected, the piercing section is provided with a piercing blade, and the piercing blade is arranged along the circumferential edge of the lower surface of the stamping section; the material lifting lower die is used for supporting and fixing a to-be-machined workpiece; comprising a positioning pin and a piercing through hole, the positioning pin positions the to-be-machined part, and the piercing through hole is matched with the piercing male die to pierce and cut off the to-be-machined part; and the material pressing upper die is matched with the material lifting lower die, is pressed on the workpiece to be machined and is provided with a through hole for the piercing convex die to penetrate through. According to the utility model, a piercing and stamping combined mode is adopted, the piercing section firstly separates the waste material area from the workpiece to be machined along the circumferential edge of the piercing section, and then the stamping section is pressed on the waste material area to completely separate the waste material area from the workpiece to be machined; therefore, the cutting strength and the cutting efficiency are improved, and the production safety is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of puncture technology, specifically to a puncture stamping die for a torque limiter cover plate. Background Technology

[0002] A torque limiter, also known as a torque restrictor or torque force limiter, is used to limit the torque transmitted by a vehicle's transmission system, preventing mechanical overload and damage, extending engine life, and controlling pollutant emissions and fuel consumption (reducing fuel consumption when entering torque-limited mode, where power increases first and fuel consumption increases later). It is an important automotive safety device. The torque limiter cover is one of the key components of the torque limiter, serving a protective function.

[0003] Currently, in the forming process of a torque limiter cover plate, there are cases where the area of ​​the waste material to be removed is small. Using a stamping method to remove the small area of ​​waste material can easily damage the punch, seriously affecting the service life of the punch, and also resulting in low production safety. Utility Model Content

[0004] The purpose of this utility model is to overcome the defects existing in the prior art and provide a puncture stamping die for a torque limiter cover plate, thereby improving the cutting strength and cutting efficiency and ensuring production safety.

[0005] To achieve the above-mentioned technical effects, the technical solution of this utility model is: a puncture stamping die for a torque limiter cover plate, comprising:

[0006] A piercing punch includes a piercing section, a stamping section and a fixing section connected in sequence. The piercing section is provided with a piercing blade, which is arranged along the circumferential edge of the lower surface of the stamping section.

[0007] The material lifting die supports and fixes the workpiece to be processed; it includes a positioning pin and a piercing through hole. The positioning pin positions the workpiece to be processed, and the piercing through hole cooperates with the piercing punch to pierce and cut off the workpiece to be processed.

[0008] The upper die for pressing material cooperates with the lower die for lifting material and is pressed onto the workpiece to be processed. It is provided with a through hole for the piercing punch to pass through.

[0009] A preferred technical solution is that the lower die for lifting the material further includes a pressure rib punch.

[0010] The preferred technical solution is that at least two positioning pins are provided.

[0011] A preferred technical solution further includes an upper fixing plate, wherein the piercing punch is fixedly disposed on the upper fixing plate.

[0012] A preferred technical solution is that the upper fixing plate is connected to the upper pressing die via a first guide post, and the upper pressing die moves up and down along the first guide post.

[0013] A preferred technical solution is that a first elastic element is further provided between the upper fixed plate and the upper pressing die, and the first elastic element is sleeved on the first guide post; the distance between the upper fixed plate and the upper pressing die is adjusted by the extension and retraction of the first elastic element.

[0014] A preferred technical solution further includes a lower fixing plate, which is spaced apart from the lower lifting die, and the lower fixing plate is connected to the lower lifting die via a second elastic element.

[0015] A preferred technical solution is that the lower fixing plate is also connected to the lower lifting mold via a second guide post, and the second elastic element is sleeved on the second guide post.

[0016] A preferred technical solution is that the upper die for pressing the material is provided with a positioning groove for the positioning pin to move.

[0017] A preferred technical solution is to further provide an upper mold base connected to the upper fixed plate, a lower mold base connected to the lower fixed plate, and a guide mechanism connecting the upper mold base and the lower mold base.

[0018] The advantages and beneficial effects of this utility model are as follows: by adopting a combination of puncture and stamping, the puncture section first separates the waste area from the workpiece along its circumferential edge, and the stamping section then presses on the waste area to completely separate the waste area and the workpiece; thereby improving the cutting strength and cutting efficiency and ensuring production safety. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the workpiece to be processed in the piercing stamping die of the torque limiter cover plate in the embodiment;

[0020] Figure 2 yes Figure 1 Enlarged view of point B in the middle;

[0021] Figure 3 This is a three-dimensional structural schematic diagram of the piercing stamping die for the torque limiter cover plate in the embodiment;

[0022] Figure 4 This is a three-dimensional structural schematic diagram of the upper die assembly of the piercing stamping die for the torque limiter cover plate in the embodiment.

[0023] Figure 5 yes Figure 4 Enlarged view of point C in the middle;

[0024] Figure 6This is a three-dimensional structural diagram of the lower die assembly of the piercing stamping die for the torque limiter cover plate in the embodiment (excluding the workpiece to be processed).

[0025] Figure 7 yes Figure 6 Enlarged view of point D in the middle;

[0026] Figure 8 This is a three-dimensional structural diagram of the lower die assembly of the piercing stamping die for the torque limiter cover plate in the embodiment (including the part to be processed).

[0027] Figure 9 This is a left view of the piercing stamping die of the torque limiter cover plate in the embodiment;

[0028] Figure 10 yes Figure 9 Schematic diagram of the cross-sectional structure at the middle EE;

[0029] Figure 11 This is a three-dimensional structural diagram of the workpiece to be processed after the puncture stamping die treatment of the torque limiter cover plate in the embodiment.

[0030] In the diagram: 1. Puncture punch; 11. Puncture section; 111. Puncture blade; 12. Stamping section; 13. Fixing section; 2. Lower lifting die; 21. Positioning pin; 22. Puncture through hole; 23. Rib punch; 3. Upper pressing die; 31. Through hole; 32. Positioning groove; 33. Receiving groove; 4. Upper fixing plate; 51. First guide post; 52. Second guide post; 53. First elastic element; 54. Second elastic element; 6. Lower fixing plate; 7. Upper die base; 8. Lower die base; 9. Guiding mechanism; 91. Guide rod; 92. Guide hole; a. Workpiece to be processed; a1. Positioning hole; a2. Forming groove; a3. Scrap area; a4. Rib forming area. Detailed Implementation

[0031] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings and examples. The following examples are only used to more clearly illustrate the technical solution of this utility model and should not be construed as limiting the scope of protection of this utility model.

[0032] In the description of this utility model, it should be noted that, unless otherwise stated, "a plurality of" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer", etc., indicating the orientation or positional relationship are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0033] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integrally formed connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0034] like Figure 1-11 As shown in the embodiment, a puncture stamping die for a torque limiter cover is characterized by comprising:

[0035] The piercing punch 1 includes a piercing section 11, a stamping section 12 and a fixing section 13 connected in sequence. The piercing section 11 is provided with a piercing blade 111, which is arranged along the circumferential edge of the lower surface of the stamping section 12.

[0036] The lower die 2 supports and fixes the workpiece a to be processed; it includes a positioning pin 21 and a piercing through hole 22. The positioning pin 21 positions the workpiece a to be processed, and the piercing through hole 22 cooperates with the piercing punch 1 to pierce and cut off the workpiece a to be processed.

[0037] The upper die 3 for pressing material cooperates with the lower die 2 for lifting material and is pressed onto the workpiece a to be processed. It is provided with a through hole 31 for the punch 1 to pass through.

[0038] Furthermore, such as Figure 1-3 As shown, in this embodiment, the workpiece a to be processed includes a positioning hole a1 and a forming groove a2. Multiple forming grooves a2 are spaced apart along the circumferential edge of the workpiece a. A waste area a3 and a rib forming area a4 are provided between adjacent forming grooves a2. The lower surface of the workpiece a abuts against the lower lifting die 2, and the upper surface of the workpiece a abuts against the upper pressing die 3.

[0039] Furthermore, at least two positioning pins 21 are provided; the number of positioning holes a1 on the workpiece a corresponds one-to-one with the number of positioning pins 21, and the positioning pins 21 pass through the positioning holes a1 to fix the workpiece a. The upper die 3 of the pressing material is provided with positioning grooves 32 for the positioning pins 21 to move.

[0040] For the removal of small-area waste area a3, the punch design is limited, the punching cross section is small, and the strength of the punch cannot be guaranteed. Therefore, punching to remove small-area waste is prone to damage to the punch, greatly shortening the service life of the punch and resulting in low production safety.

[0041] Compared to stamping, puncturing involves a smaller force-bearing area and higher pressure, thus reducing cutting force while improving cutting efficiency. Furthermore, for the removal of small waste areas a3, puncturing extends the product's lifespan and improves production safety.

[0042] Furthermore, the length of the puncturing section 11 is greater than or equal to the thickness of the waste area a3; the length of the stamping section 12 is greater than or equal to the thickness of the waste area a3.

[0043] Furthermore, the puncturing section 11 and the stamping section 12 can be inserted into the workpiece a to remove the waste area a3 of the workpiece a.

[0044] Furthermore, the cross-sectional area of ​​the fixed section 13 perpendicular to the vertical direction is larger than the cross-sectional area of ​​the stamping section 12 perpendicular to the vertical direction, so as to enhance the strength of the piercing punch 1.

[0045] Furthermore, such as Figure 10 As shown, the piercing punch 1 passes through the upper die 3, the workpiece a, and the lower die 2 in sequence to pierce and remove the waste area a3, that is, it passes through the through hole 31 and the waste area a3 in sequence to pierce the through hole 22.

[0046] Furthermore, the puncture section 11 can be designed to gradually increase in width from bottom to top; this design is beneficial to the strength of the puncture punch 1.

[0047] Furthermore, the piercing blade 111 is partially or completely set along the circumferential edge of the stamping section 12.

[0048] like Figure 6-7 As shown, in another preferred embodiment, the lower die 2 for lifting the material also includes a pressing punch 23.

[0049] The rib-pressing punch 23 is set up to cooperate with the upper die 3 to stamp the workpiece a into a rib structure; specifically, the rib-pressing punch 23 corresponds to the rib forming area a4 of the workpiece a to stamp and form the rib structure.

[0050] Furthermore, such as Figure 4 As shown, the upper die 3 for pressing is provided with a receiving groove 33, and the lower die 2 for lifting can move up and down relative to the upper die 3 within the receiving groove 33; specifically, the side wall of the receiving groove 33 abuts against the side wall of the lower die 2 for lifting and moves relative to each other in the vertical direction; this arrangement allows the upper die 3 for pressing and the lower die 2 for lifting to restrict the deformation of the workpiece a in the circumferential circumference caused by stress during the processing.

[0051] like Figure 3-4 As shown, in another preferred embodiment, it also includes an upper fixing plate 4, and the piercing punch 1 is fixedly disposed on the upper fixing plate 4;

[0052] The upper fixed plate 4 is connected to the upper pressing die 3 via the first guide post 51, and the upper pressing die 3 moves up and down along the first guide post 51.

[0053] In this embodiment, the first guide post 51 restricts the movement of the upper die 3 in the vertical direction; one end of the first guide post 51 is fixedly connected to the upper fixed plate 4, and the other end is movably connected to the upper die 3. Furthermore, the upper die 3 is provided with a space for the first guide post 51 to move; the upper die 3 restricts the first guide post 51 to move up and down within the provided space to adjust the distance between the upper die 3 and the upper fixed plate 4.

[0054] Furthermore, a first elastic element 53 is provided between the upper fixed plate 4 and the upper die 3, and the first elastic element 53 is sleeved on the first guide post 51; the distance between the upper fixed plate 4 and the upper die 3 is adjusted by the extension and retraction of the elastic element.

[0055] The first elastic element 53 is set so that when the mold is opened, the distance between the upper fixed plate 4 and the upper die 3 is restored, so that the piercing punch 1 is retracted into the upper die 3, which protects the piercing punch 1 and prevents the piercing punch 1 from wearing.

[0056] In this embodiment, the first elastic element 53 is a compression spring.

[0057] like Figure 3 , Figure 6 and Figure 10 As shown, in another preferred embodiment, a lower fixing plate 6 is also included. The lower fixing plate 6 is spaced apart from the lower lifting mold 2, and the lower fixing plate 6 is connected to the lower lifting mold 2 through a second elastic member 54.

[0058] The second elastic element 54 serves two purposes: firstly, it creates a gap between the upper fixed plate 4 and the lower lifting die 2, allowing the waste material to fall from the puncture hole 22 of the lower lifting die 2 onto the lower fixed plate 6 after the puncture operation is completed, thus facilitating the cleaning of the waste material; secondly, it reduces the impact force during die closing.

[0059] In this embodiment, the second elastic element 54 is a compression spring.

[0060] Furthermore, the lower fixed plate 6 is also connected to the lower lifting mold 2 via the second guide post 52, and the second elastic element 54 is sleeved on the second guide post 52.

[0061] In this embodiment, one end of the second guide post 52 is fixedly connected to the lower fixed plate 6, and the other end is movably connected to the lower lifting mold 2. The lower lifting mold 2 is provided with space for the second guide post 52 to move up and down.

[0062] The second guide post 52 restricts the vertical movement of the lower die 2 and provides guidance for the extension and retraction of the second elastic element 54.

[0063] like Figure 3As shown, in another embodiment, an upper mold base 7 connected to the upper fixed plate 4, a lower mold base 8 connected to the lower fixed plate 6, and a guide mechanism 9 connecting the upper mold base 7 and the lower mold base 8 are also provided.

[0064] like Figure 3-6 As shown, the guiding mechanism 9 includes a guide rod 91 disposed on the lower mold base 8 and a guide hole 92 disposed on the upper mold base 7. The guide rod 91 and the guide hole 92 cooperate with each other to provide guidance for mold closing and ensure the accuracy of the positional alignment between the upper and lower molds.

[0065] like Figure 1-11 As shown, the operation steps of this utility model are as follows:

[0066] Step 1: First, place the workpiece a to be processed on the lower lifting mold 2, and fix the workpiece a by passing the positioning pin 21 through the positioning hole a1;

[0067] Step 2: Align the guide hole 92 of the upper die base 7 with the guide rod 91 of the lower die base 8, and drive the upper die base 7 to move downward; the upper die 3 presses against the workpiece a and cooperates with the clamping punch to perform rib structure stamping; after the upper die 3 abuts against the workpiece a, it no longer moves downward, and at the same time the second elastic element 54 is compressed into a contracted state.

[0068] Step 3: The upper mold base 7 continues to move downward, the first elastic element 53 contracts, the piercing punch 1 continues to move downward until it pierces the through hole 22, and the workpiece a is completed and the waste area a3 is pierced and removed.

[0069] Step 4: After the puncture stamping is completed, the upper die holder 7 moves upward, the second elastic element 54 recovers its deformation, and the waste on the lower fixed plate 6 is cleaned up periodically.

[0070] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A puncture stamping die for a torque limiter cover plate, characterized in that, include: The piercing punch (1) includes a piercing section (11), a stamping section (12) and a fixing section (13) connected in sequence. The piercing section (11) is provided with a piercing blade (111), which is arranged along the circumferential edge of the lower surface of the stamping section (12). The lower die (2) supports and fixes the workpiece (a) to be processed; it includes a positioning pin (21) and a piercing through hole (22). The positioning pin (21) positions the workpiece (a) to be processed, and the piercing through hole (22) cooperates with the piercing punch (1) to pierce and cut off the workpiece (a); The upper die (3) for pressing material cooperates with the lower die (2) for lifting material and is pressed onto the workpiece (a) to be processed. It is provided with a through hole (31) for the piercing punch (1) to pass through.

2. The puncture stamping die for the torque limiter cover plate according to claim 1, characterized in that, The lower lifting die (2) also includes a pressing punch (23).

3. The puncture stamping die for the torque limiter cover plate according to claim 1, characterized in that, At least two positioning pins (21) are provided.

4. The puncture stamping die for the torque limiter cover plate according to claim 1, characterized in that, It also includes an upper fixing plate (4), on which the piercing punch (1) is fixedly disposed.

5. The puncture stamping die for the torque limiter cover plate according to claim 4, characterized in that, The upper fixing plate (4) is connected to the upper pressing mold (3) via the first guide post (51), and the upper pressing mold (3) moves up and down along the first guide post (51).

6. The puncture stamping die for the torque limiter cover plate according to claim 5, characterized in that, A first elastic element (53) is also provided between the upper fixed plate (4) and the upper pressing die (3), and the first elastic element (53) is sleeved on the first guide post (51); the distance between the upper fixed plate (4) and the upper pressing die (3) is adjusted by the extension and retraction of the first elastic element (53).

7. The puncture stamping die for the torque limiter cover plate according to claim 4, characterized in that, It also includes a lower fixing plate (6), which is spaced apart from the lower lifting mold (2), and the lower fixing plate (6) is connected to the lower lifting mold (2) through a second elastic element (54).

8. The puncture stamping die for the torque limiter cover plate according to claim 7, characterized in that, The lower fixing plate (6) is also connected to the lower lifting mold (2) via the second guide post (52), and the second elastic element (54) is sleeved on the second guide post (52).

9. The puncture stamping die for the torque limiter cover plate according to claim 3, characterized in that, The upper die (3) for pressing is provided with a positioning groove (32) for the positioning pin (21) to move.

10. The puncture stamping die for the torque limiter cover plate according to claim 7, characterized in that, It is also provided with an upper mold base (7) connected to the upper fixed plate (4), a lower mold base (8) connected to the lower fixed plate (6), and a guide mechanism (9) connecting the upper mold base (7) and the lower mold base (8).

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