A tooling for forming the break of a snap ring

Abstract

This utility model relates to the field of spring manufacturing. Its purpose is to provide a snap ring forming fixture that solves the problem of low snap ring forming efficiency. The fixture includes an upper die assembly and a lower die assembly. The upper die assembly is positioned above the lower die assembly. The upper die assembly includes an upper die post, a stripper plate, multiple guide posts, multiple compression springs, and multiple bolts. The guide posts and bolts are located at the bottom of the upper die post. The two ends of the compression springs abut against the upper die post and the stripper plate, respectively. During snap ring forming, the snap ring passes over the upper surface of the insert and is positioned above the cutting hole. After the outer circumference of the snap ring reaches the set size, the upper die assembly presses down, the stripper plate presses onto the snap ring, and the cutter punches between two adjacent snap rings, cutting them off. The waste material enters the cutting hole with the cutter. Then, the upper die assembly resets upwards. This eliminates the need to place the formed snap ring on a punch press for punching, thus solving the problem of low snap ring forming efficiency.

Description

Technical Field

[0001] This utility model relates to the field of spring manufacturing, and in particular to a tooling for forming the break of a retaining spring. Background Technology

[0002] Snap rings are an important automotive component. Most snap rings have an inward or outward V-shaped opening, which requires punching the opening on a punch press after the spring is formed on a spring machine.

[0003] The existing punching process requires the operator to manually place the snap ring product into the mold and then press the machine button to punch it. During this process, the operator has to put their hands into the upper and lower molds, which is dangerous. In addition, because it is a manual operation, the cycle time of this process is slow, which affects production efficiency. Utility Model Content

[0004] The purpose of this invention is to provide a tooling for forming the break of a retaining ring, which solves the problem of low efficiency in forming the break of retaining rings.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] This utility model provides a tooling for forming the break of a retaining ring, including an upper mold assembly and a lower mold assembly, wherein the upper mold assembly is disposed above the lower mold assembly.

[0007] The upper mold assembly includes an upper mold post, a stripper plate, multiple guide posts, multiple compression springs, and multiple bolts. The guide posts and bolts are disposed at the bottom of the upper mold post. The stripper plate is slidably disposed on the guide posts and bolts. The bolts are configured to prevent the stripper plate from falling off. The compression springs are sleeved on the guide posts, and the two ends of the compression springs abut against the upper mold post and the stripper plate, respectively.

[0008] The lower mold assembly includes a lower mold pillar and an insert, the insert being disposed on the lower mold pillar and located on the moving path of the stripper plate;

[0009] A cutter is provided on the upper mold column, the cutter passes through the stripper plate, a cutter hole is provided on the insert, the cutter hole is located on the moving path of the cutter, the shape of the cutter hole matches the shape of the cutter, the insert is used to hold a retaining spring, and there is a retaining spring between the cutter and the cutter hole.

[0010] Optionally, the cutter is a triangular prism, and the cutter hole is a triangular hole.

[0011] Optionally, the stripper plate is provided with guide holes, bolt holes and cutter holes, the guide post passes through the guide holes, the bolt passes through the bolt holes, and the cutter passes through the cutter holes.

[0012] Optionally, the lower mold post is provided with a plurality of positioning holes, which are used to accommodate the guide post.

[0013] Optionally, the upper surface of the insert is flush with the upper surface of the lower mold column.

[0014] Optionally, the upper mold assembly further includes an upper module and an upper mold handle, with the upper module connected to the upper mold handle and the upper mold column at both ends, respectively.

[0015] Optionally, the lower mold assembly further includes a lower module and a lower mold shank, with the lower module connected to the lower mold shank and the lower mold post at both ends, respectively.

[0016] Furthermore, the lower mold post is provided with a blanking hole, which is connected to the cutting hole, and the cutting hole is located above the blanking hole.

[0017] Furthermore, the lower module is provided with a feeding hole, which communicates with the discharge hole and penetrates the top and side wall of the lower module.

[0018] Optionally, the lower mold column is provided with a groove, and the insert is disposed in the groove.

[0019] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art:

[0020] This utility model discloses a retaining spring break forming fixture. During the forming process, the retaining spring passes over the upper surface of the insert and is positioned above the cutter hole. After the outer circumference of the retaining spring reaches the set size, the upper die assembly presses down, the stripper plate presses on the retaining spring, and the cutter continues downward, punching between two adjacent retaining springs. The two adjacent retaining springs are cut off, and the waste material enters the cutter hole with the cutter. Then, the upper die assembly resets upward. This eliminates the need to place the formed retaining spring on a punch press for punching, thus solving the problem of low retaining spring break forming efficiency. Attached Figure Description

[0021] The following sections will describe some specific embodiments of the present invention in a detailed manner by way of example and not limitation, with reference to the accompanying drawings. The same reference numerals in the drawings denote the same or similar parts or components. Those skilled in the art should understand that these drawings are not necessarily drawn to scale. In the drawings:

[0022] Figure 1 This is a perspective view of a snap ring break forming tool according to a preferred embodiment of the present utility model;

[0023] Figure 2 yes Figure 1 A stereoscopic view from another perspective;

[0024] Figure 3It is a three-dimensional view showing the insert separated from the lower mold pillar;

[0025] Figure 4 yes Figure 1 A perspective view of the stripper plate shown;

[0026] Figure 5 This is another perspective view showing the separation of the upper mold column and the stripper plate;

[0027] Figure 6 This is a top view of the retaining ring on the lower mold post and insert.

[0028] The reference numerals in the attached figures are explained as follows:

[0029] 1. Upper mold assembly; 2. Lower mold assembly; 3. Upper mold shank; 4. Lower mold shank; 5. Snap ring; 10. Upper module; 11. Upper mold pillar; 12. Stripper plate; 13. Guide pillar; 14. Compression spring; 15. Bolt; 16. Cutter; 17. Guide hole; 18. Bolt hole; 19. Cutter hole; 21. Lower mold pillar; 22. Insert; 23. Cutter hole; 24. Positioning hole; 25. Blanking hole; 26. Lower module; 27. Blanking hole; 28. Insert groove; 150. Nut; 190. Limiting hole; 191. Coarse hole; 192. Fine hole; 193. Countersunk platform. Detailed Implementation

[0030] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0031] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and 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. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0032] Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0033] like Figure 1 and Figure 2 and Figure 3As shown, a snap ring break forming tooling includes an upper mold assembly 1 and a lower mold assembly 2. The upper mold assembly 1 is disposed above the lower mold assembly 2 and is disposed on a driver (not shown in the figure). The lower mold assembly 2 can be vertically disposed on the ground.

[0034] The upper mold assembly 1 includes an upper mold post 11, a stripper plate 12, multiple guide posts 13, multiple compression springs 14, and multiple bolts 15. The guide posts 13 are located at the bottom of the upper mold post 11. The stripper plate 12 is slidably mounted on the guide posts 13 and can move on the guide posts 13. The bolts 15 are connected to the stripper plate 12 and are configured to prevent the stripper plate 12 from falling off. The lower end of the bolts 15 prevents the stripper plate 12 from falling off.

[0035] Bolt 15 is slidably mounted on the upper mold column 11. Bolt 15 is threadedly connected to stripper plate 12. Stripper plate 12 and bolt 15 slide up and down together.

[0036] The compression spring 14 is sleeved on the guide post 13. The two ends of the compression spring 14 abut against the upper mold post 11 and the stripper plate 12 respectively. The compression spring 14 moves the stripper plate 12 away from the upper mold post 11.

[0037] The lower mold assembly 2 includes a lower mold post 21 and an insert 22. The insert 22 is disposed on the lower mold post 21 and is located on the moving path of the stripper plate 12. When the upper mold assembly 1 is pressed down, the stripper plate 12 can be laid flat on the insert 22 and the upper mold assembly 1 descends to a set height.

[0038] A cutter 16 is provided on the upper mold column 11. The cutter 16 passes through the stripper plate 12. A cutter hole 23 is provided on the insert 22. The cutter hole 23 is located on the moving path of the cutter 16. The shape of the cutter hole 23 matches the shape of the cutter 16. The insert 22 is used to hold the retaining spring 5. There is a retaining spring 5 between the cutter 16 and the cutter hole 23. The retaining spring 5 spans across the cutter hole 23.

[0039] When the connecting part of two adjacent retaining rings 5 ​​moves above the cutter hole 23, the upper mold assembly 1 presses downward, the stripper plate 12 presses on the insert 22 and the lower mold post 21, the compression spring 14 is squeezed by the lower mold post 21 and the stripper plate 12, the cutter 16 continues to move downward, the cutter 16 cuts the connecting part between two adjacent retaining rings 5, the cutter 16 and the waste material enter the cutter hole 23, after the cutter 16 descends to the set height, the cutter 16 returns to its original position upward with the upper mold assembly 1.

[0040] During the reset process of the upper mold assembly 1, the compression spring 14 springs back down to the stripper plate 12, causing the stripper plate 12 to reset quickly. Then, the connecting part between the two adjacent retaining springs 5 ​​continues to move below the cutter 16, and the above steps are repeated.

[0041] The cutter 16 is a triangular body, and the cutter hole 23 is a hollow triangular body hole. The cutter hole 23 passes through the upper and lower ends of the insert 22, and the cutter hole 23 matches the shape of the cutter 16.

[0042] The lower die post 21 is provided with multiple positioning holes 24, which are used to accommodate the guide post 13. When the upper die assembly 1 descends to a set height, the guide post 13 also descends to a set height. In this way, the lower part of the guide post 13 enters the positioning hole 24. When the stripper plate 12 presses against the lower die post 21, vibration will occur between the stripper plate 12 and the lower die post 21. The guide post 13 is in the positioning hole 24, which can prevent the lower die post 21 from shifting due to vibration. At this time, the compression spring 14 has a vibration damping effect on the stripper plate 12.

[0043] The upper surface of the insert 22 is flush with the upper surface of the lower mold pillar 21, so that the bottom surface of the stripper plate 12 can be laid flat on the upper surfaces of the insert 22 and the lower mold pillar 21.

[0044] The upper mold assembly 1 also includes an upper module 10 and an upper mold handle 3. The upper module 10 is connected to the upper mold handle 3 and the upper mold pillar 11 at both ends, respectively. The upper mold pillar 11 can be replaced with different specifications as needed. The upper mold handle 3 is used to connect to the driver (not shown in the figure).

[0045] The lower mold assembly 2 also includes a lower module 26 and a lower mold handle 4. The lower module 26 is connected to the lower mold handle 4 and the lower mold column 21 at both ends, respectively. The lower mold column 21 can be replaced with different specifications as needed. The lower mold handle 4 is used to fix it on the ground.

[0046] The lower mold column 21 is provided with a blanking hole 25, which is connected to the cutting hole 23. The cutting hole 23 is located above the blanking hole 25. The blanking hole 25 and the cutting hole 23 have the same shape. The waste material enters the blanking hole 25 from the cutting hole 23.

[0047] The lower module 26 is provided with a discharge hole 27, which communicates with the discharge hole 25. The discharge hole 27 penetrates the top and side wall of the lower module 26. The discharge hole 27 is bent downward so that the waste material falls from the discharge hole 27 at a reduced speed.

[0048] The lower mold column 21 is provided with a groove 28, and the insert 22 is disposed in the groove 28. The insert 22 is detachably disposed in the groove 28. In this example, the insert 22 is connected to the lower mold column 21 by screws.

[0049] like Figure 3 and Figure 4 and Figure 5 As shown, the stripper plate 12 is provided with a guide hole 17, a bolt hole 18 and a cutter hole 19. The guide post 13 passes through the guide hole 17 and guides the movement of the stripper plate 12 to prevent the stripper plate 12 from tilting and keep the stripper plate 12 stable during movement. The bolt 15 passes through the bolt hole 18 and is threadedly connected to the bolt hole 18. The lower end of the bolt 15 is located inside the bolt hole 18.

[0050] The bottom of the guide post 13 extends below the stripper plate 12. The cutter 16 passes through the cutter hole 19, which also guides the cutter 16 to prevent it from deviating.

[0051] The upper mold column 11 is provided with a limiting hole 190. The bolt 15 is slidably disposed in the limiting hole 190. The limiting hole 190 includes a coarse hole 191 and a fine hole 192 that are connected. The fine hole 192 is located at the lower end of the coarse hole 191. The bolt 15 passes through the coarse hole 191 and the fine hole 192. The bolt 15 has a nut 150. The upper end of the fine hole 192 and the lower end of the coarse hole 191 form a countersunk platform 193. The nut 150 slides in the coarse hole 191. The countersunk platform 193 prevents the nut 150 from moving downward. The upper module 10 prevents the nut 150 from moving upward.

[0052] like Figure 1 and Figure 6 As shown, the connecting part of the adjacent retaining spring 5 is located on the knife hole 23. The cutter 16 cuts the connecting part of the adjacent retaining spring 5 downwards, while the stripper plate 12 presses down on the retaining spring 5, so that the ends of the cut retaining spring 5 are pressed flat.

[0053] The above embodiments are only for illustrating the technical concept and features of this utility model. Their purpose is to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be used to limit the protection scope of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the protection scope of this utility model.

Claims

1. A tooling for forming the break of a retaining ring, comprising an upper mold assembly (1) and a lower mold assembly (2), wherein the upper mold assembly (1) is disposed above the lower mold assembly (2), characterized in that, The upper mold assembly (1) includes an upper mold post (11), a stripper plate (12), multiple guide posts (13), multiple compression springs (14), and multiple bolts (15). The guide posts (13) are disposed at the bottom of the upper mold post (11). The bolts (15) are slidably disposed on the upper mold post (11). The stripper plate (12) is slidably disposed on the guide posts (13). The bolts (15) are connected to the stripper plate (12). The bolts (15) are disposed to prevent the stripper plate (12) from falling off. The compression springs (14) are sleeved on the guide posts (13). The two ends of the compression springs (14) abut against the upper mold post (11) and the stripper plate (12), respectively. The lower mold assembly (2) includes a lower mold post (21) and an insert (22). The insert (22) is disposed on the lower mold post (21) and is located on the moving path of the stripper plate (12). A cutter (16) is provided on the upper mold column (11), the cutter (16) passes through the stripper plate (12), and a cutter hole (23) is provided on the insert (22). The cutter hole (23) is located on the moving path of the cutter (16), and the shape of the cutter hole (23) matches the shape of the cutter (16). The insert (22) is used to hold a retaining spring, and there is a retaining spring between the cutter (16) and the cutter hole (23).

2. The retaining ring break forming tooling according to claim 1, characterized in that, The cutter (16) is a triangular prism, and the cutter hole (23) is a triangular hole.

3. The retaining ring break forming tooling according to claim 1, characterized in that, The stripper plate (12) is provided with a guide hole (17), a bolt hole (18) and a cutter hole (19). The guide post (13) passes through the guide hole (17), the bolt (15) passes through the bolt hole (18), and the cutter (16) passes through the cutter hole (19).

4. The retaining ring break forming tooling according to claim 1, characterized in that, The lower mold column (21) is provided with a plurality of positioning holes (24), which are used to accommodate the guide column (13).

5. The retaining ring break forming tooling according to claim 1, characterized in that, The upper surface of the insert (22) is flush with the upper surface of the lower mold column (21).

6. The retaining ring break forming tooling according to claim 1, characterized in that, The upper mold assembly (1) further includes an upper module (10) and an upper mold handle (3), with the upper module (10) connected to the upper mold handle (3) and the upper mold column (11) at both ends respectively.

7. The retaining ring break forming tooling according to claim 1, characterized in that, The lower mold assembly (2) further includes a lower module (26) and a lower mold shank (4), with the lower module (26) connected to the lower mold shank (4) and the lower mold post (21) at both ends.

8. The retaining ring break forming tooling according to claim 7, characterized in that, The lower mold column (21) is provided with a blanking hole (25), which is connected to the cutting hole (23), and the cutting hole (23) is located above the blanking hole (25).

9. The retaining ring break forming tooling according to claim 8, characterized in that, The lower module (26) is provided with a feeding hole (27), which is connected to the discharge hole (25). The feeding hole (27) penetrates the top and side wall of the lower module (26).

10. The retaining ring break forming tooling according to claim 1, characterized in that, The lower mold column (21) is provided with a groove (28), and the insert (22) is disposed in the groove (28).

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