A retainer punching die

Abstract

The utility model discloses a kind of retainer punching die, it is related to mould field, including upper die holder and lower die holder, upper die holder and lower die holder are connected by outer guide column;The upper die holder center connects punching core shaft, and punching core shaft outside is equipped with punching punch, punch pressing plate and punch pull plate;The upper end of the punching punch has sliding part, and sliding channel that is adapted with sliding part is formed between punch pressing plate and punch pull plate;The upper die holder is connected guide cylinder by supporting cylinder, and the upper die holder is also connected inner guide column, and inner guide column passes punch pressing plate, punch pull plate and guide cylinder in turn;The lower die holder installs punching concave die, and punching concave die outside is provided with concave die pressing plate, and concave die pressing plate is equipped with the guide channel that cooperates with inner guide column;The guide cylinder is connected material pressing plate by first spring, and material pressing plate is used to compactly place in the retainer of punching concave die.The utility model can realize to the retainer one-time high-precision punching, improve retainer punching quality and efficiency.

Description

Technical Field

[0001] This utility model relates to the field of molds, and in particular to a cage punching mold. Background Technology

[0002] In the manufacturing process of cages, the punching process is one of the key steps, directly affecting the quality and performance of the cage. Cages typically require the machining of multiple windows, and high requirements are placed on the dimensional accuracy, positional accuracy, and overall machining quality of these windows. Currently, existing cage punching dies have certain limitations in structure and function. On the one hand, some dies lack effective guidance during the punching process, causing the punching punch to easily shift or wobble during stamping, making it impossible to guarantee precise stamping of the cage. On the other hand, existing dies do not provide good fixation of the cage during the punching process, which also affects the punching quality. Utility Model Content

[0003] To address the shortcomings of existing technologies, the purpose of this utility model is to provide a cage punching die that can achieve high-precision punching of the cage in one go, thereby improving the quality and efficiency of cage punching.

[0004] To achieve the above objectives, this utility model is implemented through the following technical solution:

[0005] An embodiment of this utility model provides a cage punching die, including an upper die base and a lower die base, which are connected by an outer guide post; the upper die base is centrally connected to a punching mandrel, and a punching punch, a punch pressure plate, and a punch pull plate are provided on the outer side of the punching mandrel; the upper end of the punching punch has a sliding part, and a sliding channel adapted to the sliding part is formed between the punch pressure plate and the punch pull plate; the upper die base is connected to a guide cylinder through a support cylinder, and the upper die base is also connected to an inner guide post, which passes through the punch pressure plate, the punch pull plate, and the guide cylinder in sequence;

[0006] The lower die base is equipped with a punching die, and a die pressure plate is provided on the outside of the punching die. The die pressure plate has a guide channel that cooperates with the inner guide post. The guide cylinder is connected to the pressure plate through a first spring. The pressure plate is used to press the retainer placed in the punching die.

[0007] As a further implementation, the upper mold base includes an upper mold base body, an upper pad, and an upper clamping plate arranged sequentially from top to bottom. The punching mandrel is connected to the upper clamping plate, and the support cylinder is located on the outside of the upper clamping plate and connected to the upper pad.

[0008] The top of the inner guide post is connected to the upper clamping plate.

[0009] As a further implementation, the lower mold base includes an upper mold base body and a lower pad plate connected to the upper side of the upper mold base body;

[0010] The punching die and die plate are connected to the upper side of the lower pad.

[0011] As a further implementation, the bottom of the punch plate is also connected to a limiting post, and the guide cylinder and the pressure plate are respectively provided with through holes for the limiting post to pass through;

[0012] When the bottom of the limiting post contacts the die plate, the punching punch is in a state of waiting to be punched.

[0013] As a further implementation, the punch pressure plate and the punch pull plate are connected by a connector;

[0014] The sliding channel extends circumferentially along the punching mandrel.

[0015] As a further implementation, at least two inner guide posts are provided, and the inner guide posts are evenly distributed along the circumference of the punching mandrel.

[0016] As a further implementation, the punching mandrel is provided with an oil storage cavity, and the punching mandrel is provided with multiple downwardly inclined oil storage channels near the lower end, and the oil storage channels are connected to the oil storage cavity.

[0017] As a further implementation, the punch includes a plurality of punching units evenly distributed circumferentially along the punching mandrel, and the lower end of each punching unit has a punching cutter.

[0018] As a further implementation, the upper mold base is provided with a through hole, and a second spring is installed in the through hole, with the bottom of the second spring contacting the top of the punching pressure plate.

[0019] As a further implementation, the lower mold base is provided with a material discharge channel.

[0020] The beneficial effects of this utility model are as follows:

[0021] (1) The upper and lower die bases of this utility model are connected by an outer guide post, and the upper die base is connected by an inner guide post. The inner guide post passes through the punch pressure plate, the punch pull plate and the guide cylinder in sequence. It plays a good guiding role in the process of the punching mandrel pushing the punching punch, ensuring the accurate punching operation of the punching punch on the cage in the punching die, and realizing one-time high-precision punching. At the same time, the punching punch is composed of multiple punching units, which can process each window of the cage at the same time.

[0022] (2) A pressure plate is provided on the lower side of the guide cylinder of this utility model. The pressure plate is connected to the guide cylinder by a spring. During the punching operation, the pressure plate can press the retainer to prevent the retainer from shaking or deviating, thus ensuring the punching quality. After punching is completed, during the retraction of the punch, the pressure plate presses the retainer due to the action of the spring, thus preventing the retainer from being pulled out and ensuring the demolding effect.

[0023] (3) The bottom of the punch pull plate of this utility model is connected to the limiting post. The limiting post can abut against the top surface of the die pressure plate. When the two are in contact, the punching punch is completely inserted into the retainer. The punching mandrel continues to move down so that the punching punch can expand outward to perform punching operation, thus ensuring punching accuracy. Attached Figure Description

[0024] The accompanying drawings, which form part of this specification, are used to provide a further understanding of this utility model. The illustrative embodiments of this utility model and their descriptions are used to explain this utility model and do not constitute an improper limitation of this utility model.

[0025] Figure 1 This is a perspective view of a punching die according to one or more embodiments of the present invention;

[0026] Figure 2 This is a cross-sectional view of a punching die according to one or more embodiments of the present invention;

[0027] Figure 3 This is a schematic diagram of the support cylinder structure according to one or more embodiments of the present invention;

[0028] Figure 4 This is a schematic diagram of the guide cylinder structure according to one or more embodiments of the present invention;

[0029] Figure 5 This is a schematic diagram of the pressure plate structure according to one or more embodiments of the present invention;

[0030] Figure 6 This is a schematic diagram of the punching unit structure according to one or more embodiments of the present invention;

[0031] Figure 7 This is a schematic diagram of the cage structure according to one or more embodiments of the present invention.

[0032] The components are as follows: 1. Upper die base; 2. Upper pad; 3. Upper clamping plate; 4. Punching mandrel; 5. Punch pressure plate; 6. Punch pull plate; 7. Support cylinder; 8. Guide cylinder; 9. Sliding channel; 10. Through hole; 11. First spring; 12. Oil storage channel; 13. Punching punch; 14. Pressure plate; 15. Punching die; 16. Die pressure plate; 17. Lower pad; 18. Lower die base; 19. Outer guide post; 20. Inner guide post; 21. Guide channel; 22. Punching unit; 23. Sliding part; 24. Punching cutter head; 25. Discharge channel; 26. Countersunk platform; 27. Limiting post; 28. Clearance groove; 29. ​​Pressure body; 30. Conical cavity; 31. Pressure table; 32. Cage; 33. Window. Detailed Implementation

[0033] It should be noted that the following detailed description is illustrative and intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used in this invention have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0034] For ease of description, the words "upper," "lower," "inner," and "outer" appearing in this invention only indicate that they are consistent with the upper, lower, inner, and outer directions of the accompanying drawings themselves, and do not limit the structure. They are merely for the purpose of facilitating the description of this invention and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0035] Example 1:

[0036] This embodiment provides a cage punching die, such as Figure 1 and Figure 2 As shown, the punching die includes an upper die base, a lower die base, a punching mandrel 4, a punching punch 13, and a punching die 15. The upper die base and the lower die base are connected by external guide posts 19 (composed of guide posts and corresponding guide channels 21), which provides stable guidance during the up-and-down movement of the die and prevents inaccurate punching due to offset. The external guide posts 19 are located near the edges of the upper and lower die bases, and at least two are arranged circumferentially, for example, two external guide posts 19 are arranged at opposite corners of the die base and the lower die base.

[0037] Specifically, the upper mold base includes an upper mold base body 1, an upper pad 2, and an upper clamping plate 3 arranged sequentially from top to bottom. The upper pad 2 is fixedly connected to the upper mold base body 1 and the upper clamping plate 3 respectively. The lower mold base includes a lower mold base body 18 and a lower pad 17 installed on the upper side of the lower mold base body 18. In this embodiment, the upper mold base body 1 and the lower mold base body 18 are rectangular structures, the upper pad 2, the upper clamping plate 3, and the lower pad 17 are circular, and the diameter of the upper pad 2 is smaller than the lateral dimension of the upper mold base body 1, the diameter of the upper clamping plate 3 is smaller than the diameter of the upper pad 2, and the diameter of the lower pad 17 is smaller than the lateral dimension of the lower mold base body 18.

[0038] The lower die base and the punching die 15 are also provided with a discharge channel 25 for discharging the waste material formed by punching.

[0039] like Figure 2As shown, the upper clamping plate 3 is connected to the center of the punching mandrel 4. In this embodiment, the punching mandrel 4 is an integral structure, which includes a cylindrical part connected to the upper clamping plate 3 and a tapered part connected to the cylindrical part. A punching punch 13, a punch pressure plate 5, and a punch pull plate 6 are sequentially sleeved on the outer side of the punching mandrel 4. The punch pressure plate 5 is located on the upper side of the punch pull plate 6, and the punch pressure plate 5 and the punch pull plate 6 are connected by a connector. A sliding part 23 is provided at the upper end of the punching punch 13. A sliding channel 9 adapted to the sliding part 23 is formed between the punch pressure plate 5 and the punch pull plate 6. The sliding channel 9 extends circumferentially along the punching mandrel 4. The punching mandrel 4 and the punching punch 13 are slidably engaged, and the sliding part 23 is slidably engaged with the sliding channel 9, allowing the punching punch 13 to expand and contract under the action of the punching mandrel 4, thus achieving the desired punching action. Figure 7 The cage 32 shown is punched.

[0040] An oil storage cavity is provided inside the punching mandrel 4, and multiple downward-sloping oil storage channels 12 are provided near the lower end of the punching mandrel 4. The oil storage channels 12 are connected to the oil storage cavity, which can effectively provide lubricating oil between the punching punch 13 and the punching die 15, reducing friction and wear during the punching process.

[0041] To achieve precise guidance of the punch 13, the upper die holder is connected to the guide cylinder 8 via the support cylinder 7, and the upper die holder is also connected to the inner guide post 20. For example... Figure 2 As shown, the support cylinder 7 is coaxially arranged with the punching mandrel 4 and sleeved on the outside of the upper clamping plate 3. The top of the support cylinder 7 is connected to the upper pad plate 2. The support cylinder 7 has a certain height so that the punch pressure plate 5 and the punch pull plate 6 are both located inside the support cylinder 7. The bottom of the support cylinder 7 is connected to the guide cylinder 8. The punching mandrel 4 and the punching punch 13 pass through the center of the guide cylinder 8.

[0042] like Figure 4 As shown, the top surface of the guide cylinder 8 is provided with a recessed platform 26, which is a platform that is recessed at a certain distance from the top surface of the guide cylinder 8. Figure 3 As shown, the diameter of the support cylinder 7 is smaller than the diameter of the guide cylinder 8 so that the support cylinder 7 is locked inside the sink 26; the support cylinder 7 and the guide cylinder 8 are connected by bolts.

[0043] At least two inner guide posts 20 are connected to the edge of the upper clamping plate 3. The inner guide posts 20 are evenly distributed and are set in the vertical direction. They pass through the punch pressure plate 5, the punch pull plate 6 and the guide cylinder 8 in sequence. The die pressure plate 16 has a guide channel 21 corresponding to the inner guide post 20. The inner guide post 20 and the guide channel 21 are connected to each other to achieve the guiding effect in the punching process, so that the punching head 24 can accurately punch the cage 32 and ensure the punching accuracy.

[0044] like Figure 2As shown, the guide cylinder 8 is connected to the pressure plate 14 via a first spring 11. The guide cylinder 8 has a mounting groove for the first spring 11, and multiple first springs 11 are installed inside the guide cylinder 8. The pressure plate 14 and the first springs 11 cooperate. During the punching process, the first spring 11 is in a compressed state, causing the pressure plate 14 to press the retainer 32 tightly, preventing the retainer 32 from shaking. After punching, the first spring 11 extends based on its rebound force, causing the pressure plate 14 to press down on the retainer 32 during the ejection (rising) process, preventing the retainer 32 from coming out with the punching punch 13 and facilitating demolding.

[0045] In this embodiment, a limiting post 27 is connected to the bottom of the punch pull plate 6. The guide cylinder 8 and the pressure plate 14 are respectively provided with through holes for the limiting post 27 to pass through. The limiting post 27 is used to limit the descent height of the guide cylinder 8. When the bottom of the limiting post 27 contacts the die pressure plate 16, the punching punch 13 enters the inner side of the retainer 32 placed in the punching die 15; the punching mandrel 4 continues to move downward, pushing the punching punch 13 to expand outward along the sliding channel 9 to realize the punching operation.

[0046] The punching die 13 is composed of multiple punching units 22 evenly distributed circumferentially along the punching mandrel, such as... Figure 6 As shown, the top of the punching unit 22 is connected to the sliding part 23, and the sliding part 23 forms a certain angle with the main body of the punching unit 22, so that the sliding part 23 is inclined downward and cooperates with the sliding channel 9. The lower end of the punching unit 22 is connected to the punching head 24, and the shape of the punching head 24 is adapted to the window 33 to be processed.

[0047] A clearance groove 28 is provided on the outer side of the end of the punching body near the punching head 24, so that the punching punch 13 can enter the punching punch 13 in a retracted state through the pressure plate 14. Figure 5 As shown, the pressure plate 14 includes an annular pressure body 29, a conical cavity 30 is provided on the inner side of the pressure body 29, and a pressure table 31 is provided at the outlet end of the conical cavity 30. The pressure table 31 has a circular structure and the retainer 32 is pressed by the bottom surface of the pressure table 31.

[0048] In this embodiment, a through hole 10 is provided in the upper die holder, and a second spring (not shown in the figure) is installed in the through hole 10. The bottom of the second spring contacts the top of the punching plate, and a cover plate is installed on the top of the through hole 10 to restrict the longitudinal movement of the second spring. During the pressing down of the punching punch 13, the second spring is compressed, generating pressure on the punching plate; during the lifting up of the punching punch 13, the second spring rebounds, causing the punching plate to push the punching punch 13 back along the sliding channel 9.

[0049] The working principle of this embodiment is as follows:

[0050] When punching the retainer 32, the retainer 32 is first placed in the punching die 15. Then, the upper die holder moves downward under the drive of external power equipment such as a punch press. The punching mandrel 4 drives the punching punch 13, punch pressure plate 5 and punch pull plate 6 to move downward as a whole.

[0051] When the limiting post 27 at the bottom of the punch pull plate 6 contacts the die pressure plate 16, the pressure plate 14 presses the retainer 32 under the elastic force of the first spring 11; at this time, the punching punch 13 is completely inserted into the retainer 32. The punching mandrel 4 continues to move downward, causing the punching punch 13 to expand outward, thereby allowing the punching cutter head 24 to penetrate the retainer 32 and form a window 33 on the periphery of the retainer 32.

[0052] After punching is completed, the upper die holder rises and resets under the drive of the external power equipment. The punching punch 13 gradually retracts and resets under the action of the punch pressure plate 5 and the punch pull plate 6. At the same time, the pressure plate 14 continues to press the retainer 32 under the elastic force of the first spring 11, so that the punching punch 13 can be separated from the retainer 32.

[0053] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A cage punching die, characterized in that, The device includes an upper die base and a lower die base, which are connected by an outer guide post. The upper die base is connected to a punching mandrel at its center, and a punching punch, a punch pressure plate, and a punch pull plate are provided on the outer side of the punching mandrel. The upper end of the punching punch has a sliding part, and a sliding channel adapted to the sliding part is formed between the punch pressure plate and the punch pull plate. The upper die base is connected to a guide cylinder through a support cylinder, and the upper die base is also connected to an inner guide post, which passes through the punch pressure plate, the punch pull plate, and the guide cylinder in sequence. The lower die base is equipped with a punching die, and a die pressure plate is provided on the outside of the punching die. The die pressure plate has a guide channel that cooperates with the inner guide post. The guide cylinder is connected to the pressure plate through a first spring. The pressure plate is used to press the retainer placed in the punching die.

2. The cage punching die according to claim 1, characterized in that, The upper mold base includes an upper mold base body, an upper pad plate, and an upper clamping plate arranged sequentially from top to bottom. The punching mandrel is connected to the upper clamping plate, and the support cylinder is located on the outside of the upper clamping plate and connected to the upper pad plate. The top of the inner guide post is connected to the upper clamping plate.

3. A cage punching die according to claim 1 or 2, characterized in that, The lower mold base includes an upper mold base body and a lower pad plate connected to the upper side of the upper mold base body; The punching die and die plate are connected to the upper side of the lower pad.

4. The cage punching die according to claim 1, characterized in that, The bottom of the punch pull plate is also connected to a limit post, and the guide cylinder and the pressure plate are respectively provided with through holes for the limit post to pass through; When the bottom of the limiting post contacts the die plate, the punching punch is in a state of waiting to be punched.

5. A cage punching die according to claim 1, characterized in that, The punch pressure plate and the punch pull plate are connected by a connector; The sliding channel extends circumferentially along the punching mandrel.

6. A cage punching die according to claim 1 or 2, characterized in that, At least two inner guide posts are provided, and the inner guide posts are evenly distributed along the circumference of the punching mandrel.

7. A cage punching die according to claim 1 or 2, characterized in that, The punching mandrel has an oil storage cavity inside, and multiple downward-sloping oil storage channels are provided near the lower end of the punching mandrel. The oil storage channels are connected to the oil storage cavity.

8. A cage punching die according to claim 1, characterized in that, The punching die includes multiple punching units evenly distributed circumferentially along the punching mandrel, and each punching unit has a punching cutter at its lower end.

9. A cage punching die according to claim 1, characterized in that, The upper mold base is provided with a through hole, and a second spring is installed in the through hole. The bottom of the second spring contacts the top of the punching plate.

10. A cage punching die according to claim 1, characterized in that, The lower mold base is provided with a material discharge channel.

Images