A continuous punching die for a circlip

Abstract

The utility model relates to a kind of continuous stamping die for clamping spring, including upper die, upper die includes fixed plate, stop plate, stripper plate and slitting punch, by setting slitting punch detachably connected on stop plate or mounting block, compared with directly setting slitting punch on fixed plate, the length of slitting punch is reduced by 40%, bending modulus is more than doubled, and in stamping process, stop plate acts rigid bearing body (the force received by slitting punch will be unloaded to rigid bearing body), so that the whole stamping process is more stable.

Description

Technical Field

[0001] This utility model belongs to the field of punching die technology, specifically relating to a continuous punching die for snap rings. Background Technology

[0002] Currently, slitting punches are generally mounted on the fixed plate of the upper mold, and then the slitting punch passes through the stop plate and the stripper plate. This setup results in a relatively long slitting punch, which can easily lead to punch breakage during production. To solve this problem, this solution was developed. Utility Model Content

[0003] In view of the shortcomings of the prior art, the technical problem to be solved by this utility model is to provide a continuous stamping die for snap rings, which shortens the length of the slitting punch by using a stop plate as a rigid load-bearing body.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a continuous stamping die for snap rings, including an upper die, the upper die including a fixed plate, a stop plate, a stripper plate and a slitting punch, the fixed plate, the stop plate and the stripper plate are arranged sequentially from top to bottom, the upper surface of the stop plate is provided with an installation groove, an installation block is detachably connected in the installation groove, the slitting punch is detachably connected to the installation block and its lower end passes through the stop plate and the stripper plate.

[0005] A continuous stamping die for a snap ring includes an upper die, which includes a fixed plate, a stop plate, a stripper plate, and a slitting punch. The fixed plate, the stop plate, and the stripper plate are arranged sequentially from top to bottom. The stop plate is provided with a punch mounting hole. The slitting punch is detachably connected to the punch mounting hole and its lower end passes through the stripper plate.

[0006] Furthermore, a first mounting hole is formed on the lower surface of the stop plate, the first mounting hole is interconnected with the mounting groove, and the mounting block and the stop plate are fixed by a first connector passing through the first mounting hole and being screwed into the mounting block.

[0007] Furthermore, the unloading plate has a first pin hole, and the stop plate has a second pin hole, with a synchronizing pin installed in the first and second pin holes.

[0008] Furthermore, the upper mold also includes an upper mold base and an upper pad, which are arranged sequentially from top to bottom.

[0009] Furthermore, a punch mounting hole is formed on the mounting block, and the cutting punch is inserted into the punch mounting hole from top to bottom and can be detached and connected. A clearance groove corresponding to the punch mounting hole is formed on the upper surface of the unloading plate.

[0010] Furthermore, the continuous stamping die also includes a lower die, which includes a concave template, a lower backing plate, and a lower die base. The concave template, the lower backing plate, and the lower die base are arranged sequentially from top to bottom. The concave template has a machining groove corresponding to the slitting punch.

[0011] Furthermore, the continuous stamping die also includes a lower die, which includes a concave template, a lower backing plate, and a lower die base, which are arranged sequentially from top to bottom; The upper mold base has a first positioning hole for mounting a positioning pin, and the lower mold base has a second positioning hole, which corresponds to the first positioning hole.

[0012] Furthermore, a drive connection hole is formed on the upper mold base.

[0013] Furthermore, a limiting hole is formed in the middle of the lower surface of the lower mold base.

[0014] Compared with the prior art, the present invention has the following beneficial effects: In this invention, by setting the slitting punch to be detachably connected to the stop plate or mounting block, compared to directly setting the slitting punch on the fixed plate, the length of the slitting punch is reduced by 40%, the bending modulus is increased by more than twice, and during the stamping process, the stop plate acts as a rigid load-bearing body (the force received by the slitting punch is unloaded onto the rigid load-bearing body), making the entire stamping process more stable. Attached Figure Description

[0015] Figure 1 This is a cross-sectional view of Embodiment 1 of the present invention; Figure 2 This is a cross-sectional view of the cutting punch position in Embodiment 1 of this utility model; Figure 3 This is a three-dimensional structural diagram of the present invention; Figure 4 This is a three-dimensional structural diagram of the stop baffle in Embodiment 1 of this utility model; Figure 5 This is a cross-sectional view of Embodiment 2 of the present invention; Figure 6 This is a three-dimensional structural diagram of the stop baffle in Embodiment 2 of this utility model.

[0016] The markings in the diagram are: 1. Upper mold; 11. Upper mold base; 111. First positioning hole; 112. Drive connection hole; 12. Upper pad; 13. Fixing plate; 14. Stop plate; 141. Mounting groove; 142. Mounting block; 143. Punch mounting hole; 15. Stripper plate; 16. Slitting punch; 2. Lower mold; 21. Concave template; 22. Lower pad; 23. Lower mold base; 231. Second positioning hole; 3. Synchronous pin. Detailed Implementation

[0017] To make the above-mentioned features and advantages of this utility model more apparent and understandable, specific embodiments are described below in conjunction with the accompanying drawings for detailed explanation.

[0018] Example 1 like Figures 1-4 As shown, this embodiment provides a continuous stamping die for snap rings, including an upper die 1 and a lower die 2.

[0019] The upper mold 1 also includes an upper mold base 11, an upper backing plate 12, a fixing plate 13, a stop plate 14, a stripper plate 15, and a slitting punch 16. The upper mold base 11, upper backing plate 12, fixing plate 13, stop plate 14, and stripper plate 15 are arranged sequentially from top to bottom.

[0020] The upper die base 11 has a first positioning hole 111 for mounting a positioning pin. The upper die base 11 also has a drive connection hole 112 for connecting to a drive cylinder, which may be a pneumatic cylinder, hydraulic cylinder, or electric cylinder. The upper surface of the stop plate 14 has a mounting groove 141, within which a mounting block 142 is detachably connected. Specifically, the lower surface of the stop plate 14 has a first mounting hole that communicates with the mounting groove 141. The mounting block 142 and the stop plate 14 are fixed by a first connector that passes through the first mounting hole and screws into the mounting block 142. The slitting punch 16 is detachably connected to the mounting block 142, and its lower end passes through the stop plate 14 and the unloading plate 15. Specifically, the mounting block 142 has a punch mounting hole 143, into which the slitting punch 16 is inserted from top to bottom and fixed by a wedge or lateral pin.

[0021] Preferably, the unloading plate 15 has a first pin hole, and the stop plate 14 has a second pin hole. Synchronous pins 3 are installed in both the first and second pin holes, enabling dynamic coordination between the unloading plate 15 and the stop plate 14. A clearance groove corresponding to the punch mounting hole 143 is formed on the upper surface of the unloading plate 15.

[0022] The upper mold base 11, upper pad 12, fixing plate 13 and stop plate 14 are connected using the connection method commonly used in existing molds, which will not be elaborated in this solution.

[0023] The lower mold 2 includes a concave template 21, a lower backing plate 22, and a lower mold base 23, arranged sequentially from top to bottom. The concave template 21 has a machining groove corresponding to the cutting punch 16. The lower mold base 23 has a second positioning hole 231, corresponding to the first positioning hole 111. During mold closing, the positioning pin is inserted into the second positioning hole 231. A limiting hole is formed in the middle of the lower surface of the lower mold base 23, and a limiting pin on the fixed surface engages with it. By inserting the limiting pin into the limiting hole, the lower mold base 23 is limited in the horizontal direction.

[0024] This solution reduces the length of the slitting punch 16 by 40% by detachably connecting it to the mounting block 142, compared to directly mounting the slitting punch 16 on the fixed plate 13. The bending modulus is increased by more than double. Furthermore, during the stamping process, the stop plate 14 acts as a rigid load-bearing body (the force received by the slitting punch 16 is unloaded onto the rigid load-bearing body), making the entire stamping process more stable.

[0025] Example 2 like Figure 3 , Figure 5 and Figure 6 As shown, the difference between this embodiment and embodiment 1 is that: the stop plate 14 does not have a mounting groove 141 and a mounting block 142, and the cutting punch 16 is directly fixed to the stop plate 14 by means of a wedge or a side pin.

[0026] This configuration also achieves the function of reducing the length of the slitting punch 16, which is cheaper than embodiment 1. However, embodiment 1 is still the best embodiment because directly opening the punch mounting hole 143 in the stop plate 14 and then installing the slitting punch 16 inside it results in poor stability and is difficult to install. Therefore, embodiment 1 uses the mounting block 142 to install the slitting punch 16 first, and then installs the mounting block 142 onto the stop plate 14. This configuration is more reasonable.

[0027] The foregoing has shown and described the basic principles and main features of this invention, as well as its advantages. Those skilled in the art should understand that this invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this invention. Various changes and modifications can be made to this invention without departing from its spirit and scope. All such changes and modifications fall within the scope of this invention as defined by the appended claims and their equivalents.

Claims

1. A continuous stamping die for a retaining ring, characterized in that: The upper mold includes a fixed plate, a stop plate, a stripper plate, and a cutting punch, wherein the fixed plate, the stop plate, and the stripper plate are arranged sequentially from top to bottom; The upper surface of the stop plate is provided with an installation groove, and an installation block is detachably connected in the installation groove. The slitting punch is detachably connected to the installation block and its lower end passes through the stop plate and the unloading plate. Alternatively, the stop plate is provided with a punch mounting hole, and the slitting punch is detachably connected in the punch mounting hole and its lower end passes through the unloading plate.

2. The continuous stamping die for a retaining ring according to claim 1, characterized in that: The lower surface of the stop plate has a first mounting hole, which communicates with the mounting groove. The mounting block and the stop plate are fixed by a first connector that passes through the first mounting hole and is screwed into the mounting block.

3. The continuous stamping die for a retaining ring according to claim 1, characterized in that: The unloading plate has a first pin hole, and the stop plate has a second pin hole. Synchronous pins are installed in the first pin hole and the second pin hole.

4. The continuous stamping die for a retaining ring according to claim 1, characterized in that: The upper mold also includes an upper mold base and an upper pad, which are arranged sequentially from top to bottom.

5. A continuous stamping die for a retaining ring according to claim 1, characterized in that: The mounting block has punch mounting holes, and the cutting punch is inserted into the punch mounting holes from top to bottom and can be detached and connected. The upper surface of the unloading plate has a clearance groove corresponding to the punch mounting holes.

6. A continuous stamping die for a retaining ring according to claim 1, characterized in that: The continuous stamping die also includes a lower die, which includes a concave template, a lower backing plate, and a lower die base. The concave template, the lower backing plate, and the lower die base are arranged sequentially from top to bottom. The concave template has a machining groove corresponding to the slitting punch.

7. A continuous stamping die for a retaining ring according to claim 4, characterized in that: The continuous stamping die also includes a lower die, which includes a concave template, a lower backing plate, and a lower die base, which are arranged sequentially from top to bottom; The upper mold base has a first positioning hole for mounting a positioning post, and the lower mold base has a second positioning hole, which corresponds to the first positioning hole.

8. A continuous stamping die for a retaining ring according to claim 7, characterized in that: The upper mold base has a drive connection hole.

9. A continuous stamping die for a retaining ring according to claim 7, characterized in that: A limiting hole is formed in the middle of the lower surface of the lower mold base.

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