High-precision stamping die for machining circular metal plate
By using a sliding fitting structure of lower nitrogen spring, limit support and limit column and limit sleeve in the stamping mold, the problem of difficult to ensure processing quality in traditional molds is solved, and high-precision edge pressing of circular sheet metal is achieved.
Patent Information
- Application Number
- CN202421135294.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-23
- Publication Date
- 2025-03-04
- Estimated Expiration
- 2034-05-23
AI Technical Summary
Traditional molds are difficult to ensure processing quality in the edge pressing process of circular sheet metal, resulting in low pass rate of finished products and cannot meet users' high requirements for accuracy.
A high-precision stamping mold is designed, using a combined structure of a lower nitrogen spring and a limit support to ensure the continuous and stable downward pressure and bearing of the circular sheet metal during the downward movement of the upper mold. It also ensures the stability of the mold clamping process through the L-shaped design of the limit support and the sliding fit between the limit column and the limit sleeve.
It effectively improves the stability of circular sheet metal during the edge pressing process, improves processing accuracy, and improves the pass rate of finished products.
Smart Images
Figure CN222551907U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of hardware processing, in particular to a high-precision stamping die for processing circular sheet metal. Background Art
[0002] Sheet metal materials have achieved a good balance in terms of weight, strength, and ease of processing. While they are widely used today, they still have a broad market. Before actual application, they need to be selectively subjected to multiple processes such as bending, crimping, and punching to meet usage requirements. Taking the crimping process of circular sheet metal as an example, although traditional molds can complete the crimping of corresponding positions by pressing the upper and lower molds, the structures that keep the circular sheet metal stable are mostly incomplete. Although this can ensure the processing quantity, the processing quality, reflected in the qualified rate of finished products, is always difficult to improve. In the past rough development era, this problem was not obvious, but with the development of technology, users have higher and higher requirements for the precision of circular sheet metal, and traditional molds are increasingly difficult to meet usage requirements. Based on this situation, how to improve the stability of circular sheet metal during the crimping process, thereby improving processing accuracy, has become an increasingly urgent problem that relevant technical personnel need to solve. Utility Model Content
[0003] In order to solve the above technical problems, the utility model provides a high-precision stamping die for processing circular sheet metal.
[0004] A high-precision stamping die for processing circular sheet metal, comprising a lower die and an upper die, characterized in that: the lower die comprises a lower die seat, a lower mounting plate is fixedly arranged on the upper part of the lower die seat, a lower template is fixedly arranged at the upper center position of the lower mounting plate, a pressure-bearing part is arranged on the upper part of the lower template, the upper die comprises an upper die seat, an upper mounting plate is fixedly arranged at the lower center position of the upper die seat, a transition plate is fixedly arranged at the lower part of the upper mounting plate, an upper template is fixedly arranged at the lower part of the transition plate, a lower pressing part is arranged at the lower part of the upper template, the lower pressing part is located directly above the pressure-bearing part, a lower nitrogen spring is fixedly arranged inside the lower mounting plate, and the lower nitrogen spring A limit support is arranged at the upper end of the spring, and the cross-sectional shape of the limit support is L-shaped. In the mold opening state, the upper surface of the horizontal part of the limit support is flush with the upper surface of the pressure-bearing part, and in the mold closing state, the upper surface of the horizontal part of the limit support is flush with the lowest position of the pressure-bearing part. An upper nitrogen spring is fixedly arranged at the inner center position of the upper mounting plate, and a through hole is penetrated at the center position of the transition plate and the upper template, and the lower end of the upper nitrogen spring penetrates the through hole. A pressure plate is fixedly arranged at the lower end of the upper nitrogen spring, and in the mold opening state, the pressure plate is located below the upper template, and in the mold closing state, the pressure plate is located inside the through hole.
[0005] Furthermore, the number of the lower nitrogen springs is 4 groups. In a top view, the 4 groups of the lower nitrogen springs are respectively located in the middle of the front, rear, left and right of the pressure-bearing part.
[0006] Furthermore, the four corners of the lower mounting plate are fixedly provided with limit sleeves, and the four corners of the lower part of the upper mold base are fixedly provided with limit posts. During the mold closing process, the limit posts and the limit sleeves are slidably fitted.
[0007] The beneficial effects of the high-precision stamping die for processing circular sheet metal of the utility model are:
[0008] 1. The upper nitrogen spring and pressure plate effectively ensure the continuous and stable downward pressure on the circular sheet metal during the downward movement of the upper die, and the lower nitrogen spring and limit support effectively ensure the continuous and stable load-bearing of the circular sheet metal during the downward movement of the upper die, thereby effectively improving the stability of the circular sheet metal during the edge pressing process, thereby effectively improving the processing accuracy;
[0009] 2. The L-shaped design of the limit support provides a good structural foundation for the stable placement of the circular sheet metal. The sliding fit between the limit column and the limit sleeve effectively ensures the stability of the upper and lower mold closing process, thereby further ensuring the processing accuracy. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below, but this does not limit the protection scope of the utility model.
[0011] Figure 1 This is a schematic diagram of the main structure of the utility model in the mold opening state;
[0012] Figure 2 This is a schematic diagram of the internal structure of the utility model in the mold opening state;
[0013] Figure 3 This is a schematic diagram of the internal structure of the utility model in a closed mold state;
[0014] Figure 4 It is a schematic diagram of the top view of the lower mold of the utility model.
[0015] Among them, 1-upper die base, 2-upper mounting plate, 3-transition plate, 4-upper template, 5-pressing plate, 6-limiting support, 7-lower die base, 8-lower mounting plate, 9-lower template, 10-upper nitrogen spring, 11-lower nitrogen spring, 12-limiting sleeve, 13-limiting column, 14-lower pressing part, 15-workpiece, 16-pressure-bearing part. DETAILED DESCRIPTION
[0016] To make the description clearer, a high-precision stamping die for processing circular sheet metal of the utility model is further described in conjunction with the accompanying drawings of the specification.
[0017] A high-precision stamping die for processing circular sheet metal, comprising a lower die and an upper die, characterized in that: the lower die comprises a lower die seat 7, a lower mounting plate 8 is fixedly arranged on the upper part of the lower die seat 7, a lower template 9 is fixedly arranged at the upper center position of the lower mounting plate 8, a pressure-bearing portion 16 is arranged on the upper part of the lower template 9, the upper die comprises an upper die seat 1, an upper mounting plate 2 is fixedly arranged at the lower center position of the upper die seat 1, a transition plate 3 is fixedly arranged at the lower part of the upper mounting plate 2, an upper template 4 is fixedly arranged at the lower part of the transition plate 3, a lower pressing portion 14 is arranged at the lower part of the upper template 4, the lower pressing portion 14 is located directly above the pressure-bearing portion 16, a lower nitrogen spring 11 is fixedly arranged inside the lower mounting plate 8, and the lower nitrogen spring 11 is fixedly arranged inside the lower mounting plate 8. A limit support 6 is arranged at the upper end of the spring 11, and the cross-sectional shape of the limit support 6 is L-shaped. In the mold opening state, the upper surface of the horizontal part of the limit support 6 is flush with the upper surface of the pressure-bearing part 16, and in the mold closing state, the upper surface of the horizontal part of the limit support 6 is flush with the lowest position of the pressure-bearing part 16. An upper nitrogen spring 10 is fixedly arranged at the inner center position of the upper mounting plate 2, and a through hole is penetrated at the center position of the transition plate 3 and the upper template 4, and the lower end of the upper nitrogen spring 10 penetrates the through hole. A pressing plate 5 is fixedly arranged at the lower end of the upper nitrogen spring 10, and in the mold opening state, the pressing plate 5 is located below the upper template 4, and in the mold closing state, the pressing plate 5 is located inside the through hole.
[0018] Furthermore, the number of the lower nitrogen springs 11 is 4 groups. In a top view, the 4 groups of the lower nitrogen springs 11 are respectively located in the middle of the front, rear, left and right of the pressure-bearing portion 16 .
[0019] Furthermore, the four corners of the lower mounting plate 8 are fixedly provided with limit sleeves 12, and the four corners of the lower part of the upper mold base 1 are fixedly provided with limit posts 13. During the mold closing process, the limit posts 13 and the limit sleeves 12 are slidably fitted.
[0020] The working principle of a high-precision stamping die for processing circular sheet metal of the utility model is as follows: the circular sheet metal to be processed, hereinafter referred to as "workpiece 15", is placed flat on the upper part of the pressure-bearing part 16, and the edge of the workpiece 15 is made to contact the inner surface of the vertical part of the limit support 6. At this time, the center position of the workpiece 15 is aligned with the center position of the pressure-bearing part 16 and remains stable, the upper die is moved vertically downward, the pressing plate 5 is first fitted with the workpiece 15, and the upper nitrogen spring 10 is contracted while the center position of the workpiece 15 is continuously pressed downward and kept stable, and then the upper template 4 is pressed with the edge position of the workpiece 15, and the lower nitrogen spring 11 is pressed against the limit support 6. While maintaining stable load-bearing, it continues to shrink stably until the lower pressing part 14, the pressure-bearing part 16 and the workpiece 15 are stably pressed together. At this point, the workpiece 15 is formed, and the upper mold is moved vertically upward. As the upper mold moves upward, the upper nitrogen spring 10 and the lower nitrogen spring 11 are reset. The reset of the upper nitrogen spring 10 releases the downward pressure on the workpiece 15 by the pressure plate 5, and the reset of the lower nitrogen spring 11 enables the limit support 6 to lift the workpiece 15, so that the staff can easily take away the formed workpiece 15, and thus a complete working process is completed. During this process, the limit column 13 and the limit sleeve 12 slide and fit together to keep the clamping process of the upper and lower molds stable.
[0021] The above are only specific implementations of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or substitutions that are not conceived through creative work should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope defined in the claims.
Claims
1. A high-precision stamping die for processing circular sheet metal, comprising a lower die and an upper die, characterized in that: The lower die comprises a lower die seat, a lower mounting plate is fixedly arranged on the upper part of the lower die seat, a lower template is fixedly arranged at the upper center position of the lower mounting plate, a pressure-bearing part is arranged on the upper part of the lower template, the upper die comprises an upper die seat, an upper mounting plate is fixedly arranged at the lower center position of the upper die seat, a transition plate is fixedly arranged at the lower part of the upper mounting plate, an upper template is fixedly arranged at the lower part of the transition plate, a lower pressing part is arranged at the lower part of the upper template, the lower pressing part is located directly above the pressure-bearing part, a lower nitrogen spring is fixedly arranged inside the lower mounting plate, a limiting support is arranged at the upper end of the lower nitrogen spring, and a cross-section of the limiting support is The shape is L-shaped. In the mold opening state, the upper surface of the horizontal part of the limit support is flush with the upper surface of the pressure-bearing part. In the mold closing state, the upper surface of the horizontal part of the limit support is flush with the lowest position of the pressure-bearing part. An upper nitrogen spring is fixedly arranged at the inner center position of the upper mounting plate. A through hole is penetrated at the center position of the transition plate and the upper template. The lower end of the upper nitrogen spring penetrates the through hole. A pressure plate is fixedly arranged at the lower end of the upper nitrogen spring. In the mold opening state, the pressure plate is located below the upper template. In the mold closing state, the pressure plate is located inside the through hole.
2. A high-precision stamping die for processing circular sheet metal according to claim 1, characterized in that: The number of the lower nitrogen springs is 4 groups. In a top view, the 4 groups of the lower nitrogen springs are respectively located in the middle of the front, rear, left and right of the pressure-bearing part.
3. The high-precision stamping die for processing circular sheet metal according to claim 1, characterized in that: Limit sleeves are fixedly arranged at the positions of the four corners inside the lower mounting plate, and limit posts are fixedly arranged at the positions of the four corners of the lower part of the upper die seat. During the mold closing process, the limit posts and the limit sleeves are slidably fitted.