Elastic forming punch structure
By using an elastic forming punch structure and a tilting drive block to change the direction of movement of the elastic punch, the problem that traditional bending parts cannot form negative angles is solved, thus saving mold space and reducing costs while ensuring forming accuracy.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- EVA PRECISION IND ZHONGSHAN
- Filing Date
- 2025-06-19
- Publication Date
- 2026-06-02
AI Technical Summary
Traditional automotive hardware stamping bending forming process cannot achieve negative angle forming, and the side punch oblique wedge slider assembly occupies a large mold space and has high cost.
The elastic forming punch structure is adopted, including a punch fixing seat and an inclined drive block. The direction of movement of the elastic punch is changed by the inclined wedge drive block to achieve negative angle bending. The elastic punch is made of alloy spring steel such as 30W4Cr2VA, 60Si2CrVA, and 55CrSi.
It saves mold structure space, reduces mold costs, and at the same time ensures molding accuracy and product size, thus improving mold design.
Smart Images
Figure CN224309459U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of automotive sheet metal stamping, and in particular to a flexible forming punch structure. Background Technology
[0002] Currently, the bending parts in automotive hardware stamping require negative angles (less than 90°) due to process requirements. Traditional forming bending structures cannot achieve this, and side punching and oblique wedge slider assemblies are needed for forming. However, side punching and oblique wedge slider assemblies occupy a large mold structure space and are expensive to manufacture. Utility Model Content
[0003] To solve the above problems, this technical solution provides an elastic forming punch structure.
[0004] To achieve the above objectives, the technical solution is as follows:
[0005] A flexible forming punch structure includes a punch holder connected to a flexible punch, and a drive block that cooperates with the flexible punch to tilt the flexible punch.
[0006] In some embodiments, the sides of the drive block are designed with bevels.
[0007] In some embodiments, the upper end face of the drive block is provided with a first guide portion with an arc design, and the lower end face of the elastic punch is provided with a second guide portion.
[0008] In some embodiments, the middle section of the elastic punch is designed in an arc or bevel shape.
[0009] In some embodiments, the width of the middle section of the elastic punch is smaller than the width of the end section.
[0010] In some embodiments, the material of the elastic punch is one of 30W4Cr2VA, 60Si2CrVA, and 55CrS.
[0011] The beneficial effects of this application are:
[0012] This application improves the mold structure to meet the needs of mold design space shortages. This process improvement saves mold space and effectively reduces mold costs compared to the original production method. Attached Figure Description
[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below.
[0014] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model. Figure 1 ;
[0015] Figure 2 This is a schematic diagram of the structure of an embodiment of the present utility model. Figure 2 . Detailed Implementation
[0016] To make the technical problems solved, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.
[0017] Please refer to Figure 1-2 As shown, an elastic forming punch structure includes a punch holder 1, on which an elastic punch 2 is connected, and a drive block 3 that cooperates with the elastic punch 2 to tilt the elastic punch 2.
[0018] The stamping process of this mold is completed by changing the direction of movement of the elastic punch through the transmission of the inclined wedge drive block. First, the elastic punch moves downward, and then contacts the inclined surface of the drive block to change the direction of movement of the punch through the reaction force. The elastic punch applies pressure to the bending edge of the product to complete the bending of the product at a negative angle.
[0019] This mold has a simple structure, saves mold space, and effectively reduces mold costs. Furthermore, this production method improves the mold structure while ensuring molding accuracy and product dimensions.
[0020] In this embodiment, the side of the drive block 3 is designed with an angle.
[0021] In this embodiment, the upper end face of the drive block 3 is provided with a first guide portion 4 with an arc design, and the lower end face of the elastic punch 2 is provided with a second guide portion 5, which is beneficial for the elastic punch to bend quickly by utilizing the mutually cooperating guide portions after contacting the drive block.
[0022] In this embodiment, the middle section of the elastic punch 2 is designed with an arc or bevel, making the punch easier to bend.
[0023] In this embodiment, the width of the middle section of the elastic punch 2 is smaller than the width of the end section, which makes it easier for the punch to bend.
[0024] In this embodiment, the elastic punch is made of alloy spring steel such as 30W4Cr2VA, 60Si2CrVA, and 55CrSi to ensure sufficient rigidity and elasticity to guarantee the strength of the punch.
[0025] The above description is only a preferred embodiment of this application and is not intended to limit the scope of implementation of this application. Any other embodiments whose principles and basic structures are the same as or similar to those of this application are within the protection scope of this application.
Claims
1. A flexible forming punch structure, characterized in that, It includes a punch holder (1) to which an elastic punch (2) is connected, and a drive block (3) that cooperates with the elastic punch (2) to tilt the elastic punch (2).
2. The elastic forming punch structure according to claim 1, characterized in that: The side of the drive block (3) is designed with a slope.
3. The elastic forming punch structure according to claim 2, characterized in that: The upper end face of the drive block (3) is provided with a first guide part (4) with an arc design, and the lower end face of the elastic punch (2) is provided with a second guide part (5).
4. The elastic forming punch structure according to claim 1, characterized in that: The middle section of the elastic punch (2) is designed with an arc or a slope.
5. The elastic forming punch structure according to claim 1, characterized in that: The width of the middle section of the elastic punch (2) is smaller than the width of the end section.
6. The elastic forming punch structure according to claim 1, characterized in that: The elastic punch (2) is made of one of the following materials: 30W4Cr2VA, 60Si2CrVA, or 55CrS.