Negative angle wedge mechanism of stamping die
By introducing a negative angle wedge mechanism into the stamping die, shortening the stroke and optimizing the guide surface design, the problems of workpiece deformation and instability caused by the wedge mechanism are solved, and efficient side forming and automated production are achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-01
- Publication Date
- 2026-03-13
AI Technical Summary
Existing wedge mechanisms are prone to workpiece deformation, excessive stroke, and instability when stamping side-forming workpieces with negative angle surfaces, thus affecting the efficiency of automated production.
Design a negative angle wedge mechanism for a stamping die. By cooperating with the wedge body and the guide block, the stroke is shortened and the workpiece is stamped from the inside below. Combined with the guide surface design, the guiding stability and workpiece quality are ensured.
It enables smooth demolding of side-shaped workpieces with negative angle surfaces during stamping, improving processing efficiency and workpiece quality, and is suitable for multi-station automated production.
Smart Images
Figure CN223988915U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of stamping dies, and in particular relates to a negative angle wedge mechanism for stamping dies. Background Technology
[0002] In automotive sheet metal stamping, multi-station stamping is required to complete the side-forming of workpieces with negative angle surfaces. Currently, stamping dies use wedge mechanisms for side-forming, which typically include a fork cutter, a slider, and a drive component. Existing wedge mechanisms drive the fork cutter via the slider and drive component, which can easily cause workpiece deformation. Furthermore, existing wedge strokes are relatively long, typically exceeding 40mm, to ensure smooth demolding. Long wedge strokes can lead to unstable guidance and the risk of wedge jamming, making them unsuitable for multi-station automated production. Utility Model Content
[0003] In view of this, the present invention aims to propose a negative angle wedge mechanism for stamping dies, which is suitable for stamping side-shaped workpieces with negative angle surfaces. After stamping, the workpieces can be easily demolded, thereby improving processing efficiency.
[0004] To achieve the above objectives, the technical solution of this utility model is implemented as follows:
[0005] A negative angle wedge mechanism for a stamping die, based on an upper die, a lower die, and a wedge mechanism, wherein the negative angle wedge mechanism is disposed on the lower die and located below the workpiece; the negative angle wedge mechanism includes a wedge body, a wedge mechanism, a wedge block, a wedge insert, and a guide block; the wedge body is mounted on the wedge mechanism, and the wedge mechanism drives the wedge body to reciprocate in an upward direction; the front end of the wedge body is provided with a wedge insert and a wedge block, the lower part of the wedge insert is connected to the wedge block, and the rear end of the wedge body is provided with a guide surface; the guide block is connected to the upper die and located outside the wedge body, and the side wall of the guide block is provided with a guide surface, which corresponds to the guide surface.
[0006] Furthermore, the wedge insert is provided with a stamped negative angle surface, which is provided in correspondence with the negative angle surface of the workpiece.
[0007] Furthermore, the guide surface includes a first guide surface and a second guide surface, the first guide surface being arranged in a vertical direction and the second guide surface being arranged at an angle.
[0008] Furthermore, the first guide surface is connected to the second guide surface, and the second guide surface has an inclination angle of 15° to 35°.
[0009] Furthermore, the stroke of the wedge mechanism is 10mm to 15mm.
[0010] Furthermore, the stamping die also includes a side punch, which is disposed on the upper die of the stamping die via a wedge mechanism.
[0011] Compared with the prior art, the negative angle wedge mechanism of the stamping die described in this utility model has the following advantages:
[0012] The wedge mechanism for negative angle side forming described in this utility model can stamp workpieces with negative angles by stamping from the inside below the workpiece through the cavity of the side forming stamping die and the negative angle surface of the cavity; it can reduce the number of processing stations, improve workpiece quality, and increase stamping efficiency; by driving through the guide surface outside the workpiece area, it does not affect the product; in addition, the stroke in the driving direction of the wedge is shortened, which can ensure demolding of the workpiece; the mechanism has a small stroke and a stable structure, which is suitable for automated production at the workstation. Attached Figure Description
[0013] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:
[0014] Figure 1 This is a schematic diagram of the negative angle wedge mechanism structure described in an embodiment of the present invention;
[0015] Figure 2 This is a perspective view of the negative angle wedge mechanism described in an embodiment of the present utility model;
[0016] Figure 3 This is a schematic diagram of the workpiece structure according to an embodiment of the present utility model.
[0017] Figure 4 This is a schematic diagram of the side punch structure according to an embodiment of the present utility model.
[0018] Explanation of reference numerals in the attached figures:
[0019] 1-Wedge mechanism; 2-Wedge block; 3-Wedge insert; 4-Workpiece; 5-Wedge body; 6-First guide surface; 7-Guide block; 8-Second guide surface; 9-Guide surface; 10-Workpiece side shaping; 11-Workpiece negative angle surface; 12-Punching negative angle surface; 13-Cavity; 14-Side punch. Detailed Implementation
[0020] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.
[0021] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.
[0022] like Figure 3As shown, this is a side-forming workpiece with a negative angle surface. Workpiece 4 has a side-forming part 10 and a negative angle surface 11. Currently, there are two solutions for stamping. Solution 1: It is necessary to rotate the workpiece angle to form the workpiece. When punching, the workpiece is rotated back to the original angle, which increases the complexity of transferring the clamp. Solution 2: It is necessary to use a wedge block when side-forming. The existing wedge block needs to transfer the driving force through the workpiece, and the structure has a large stroke, which affects the surface quality of the workpiece. At the same time, the structure is unstable and not conducive to automated production.
[0023] like Figure 1 and Figure 2 As shown, a negative angle wedge mechanism for a stamping die is based on an upper die, a lower die, and a wedge mechanism. The negative angle wedge mechanism is located on the lower die and below the workpiece 4. The negative angle wedge mechanism includes a wedge body 5, a wedge mechanism 1, a wedge block 2, a wedge insert 3, and a guide block 7. The wedge body 5 is mounted on the wedge mechanism 1, and the wedge mechanism 1 drives the wedge body 5 to reciprocate along an upward direction. Furthermore, the wedge mechanism 1 drives the wedge body 5 to reciprocate along an upward 20° angle. The wedge insert 3 and the wedge block 2 are provided at the front end of the wedge body 5, and the lower part of the wedge insert 3 is connected to the wedge block 2. A guide surface 9 is provided at the rear end of the wedge body 5. The guide block 7 is connected to the upper die and is located outside the wedge body 5. A guide surface is provided on the side wall of the guide block 7, and the guide surface is correspondingly provided with the guide surface 9.
[0024] The working principle of the negative angle wedge mechanism of this stamping die is as follows: the workpiece is fixed inside the stamping die, the upper die presses downward, driving the wedge mechanism to work, causing the wedge body 5 to move forward in an upward direction, pressing the workpiece from the inside below; after stamping, the upper die is lifted, the wedge mechanism drives the wedge body 5 to move backward, and the wedge insert 3 and wedge block 2 retract away from the workpiece. This negative angle wedge mechanism of the stamping die can realize the stamping of side-shaped workpieces with negative angles. It reduces processing stations, improves workpiece quality, and increases stamping efficiency. Furthermore, the guide surface reduces the slider stroke, improving guiding stability.
[0025] like Figure 2 As shown, the wedge insert 3 is provided with a stamped negative angle surface 12, which corresponds to the negative angle surface 11 of the workpiece. The wedge insert 3 stamps the workpiece from the inner side below, thus stamping the negative angle surface 12.
[0026] like Figure 1 As shown, the guide surface includes a first guide surface 6 and a second guide surface 8. The first guide surface 6 is arranged vertically, and the second guide surface 8 is inclined. Furthermore, the first guide surface 6 connects to the second guide surface 8, and the inclination angle of the second guide surface 8 is 15° to 35°. The guide surfaces further reduce the slider stroke and improve guiding stability.
[0027] The stroke of the wedge mechanism 1 is 10mm to 15mm. By shortening the stroke of the wedge mechanism 1, the demolding of the workpiece can be guaranteed; moreover, the short stroke of the mechanism results in a stable structure, which is beneficial for automated production at the workstation.
[0028] like Figure 4 As shown, the stamping die also includes a side punch 14, which is mounted on the upper die of the stamping die via a wedge mechanism. When using the negative angle wedge mechanism described in this invention, the side punch 14 is driven by the upper die wedge mechanism to stamp the workpiece side shaping 10 and the workpiece negative angle surface 11. After stamping is completed and the upper die is lifted, the wedge mechanism drives the wedge body 5 to move backward, and the wedge insert 3 and wedge block 2 retract away from the workpiece. This enables the stamping of workpieces with negative angle surfaces to achieve side shaping, avoiding the transmission of driving force through the workpiece, thus solving the problems of large structural stroke affecting the surface quality of the workpiece and structural instability, which is detrimental to automated production.
[0029] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A negative-angle cam mechanism of a press die, based on an upper die, a lower die, and a cam mechanism of a press die, characterized by: The negative angle inclined wedge mechanism is arranged in the lower die and below the workpiece (4); the negative angle inclined wedge mechanism comprises an inclined wedge body (5), an inclined wedge mechanism (1), a wedge block (2), an inclined wedge insert (3) and a guide block (7); the inclined wedge body (5) is fitted on the inclined wedge mechanism (1), the inclined wedge mechanism (1) drives the inclined wedge body (5) to reciprocate in the obliquely upward direction; the inclined wedge body (5) is provided at the front end with the inclined wedge insert (3) and the wedge block (2), the inclined wedge insert (3) is connected with the wedge block (2) at the lower part, and the inclined wedge body (5) is provided at the rear end with a guide sliding surface (9); the guide block (7) is connected with the upper die and located outside the inclined wedge body (5), the sidewall of the guide block (7) is provided with a guide surface, and the guide surface is correspondingly arranged with the guide sliding surface (9).
2. The negative-angle wedge mechanism of a punch press die according to claim 1, characterized by: The inclined wedge insert (3) is provided with a stamping negative angle surface (12), and the stamping negative angle surface (12) is correspondingly arranged with a workpiece negative angle surface (11).
3. The negative-angle wedge mechanism of a punch press die according to claim 1, characterized by: The guide surface comprises a first guide surface (6) and a second guide surface (8), the first guide surface (6) is arranged in the vertical direction, and the second guide surface (8) is arranged obliquely.
4. The negative-angle wedge mechanism of a punch press die according to claim 3, characterized by: The first guide surface (6) is connected with the second guide surface (8), and the inclination angle of the second guide surface (8) is 15° to 35°.
5. The negative-angle wedge mechanism of a punch press die of claim 3, wherein: The stroke of the inclined wedge mechanism (1) is 10mm to 15mm.
6. The negative-angle wedge mechanism of a punch press die according to any one of claims 1 to 5, characterized in that: The stamping die further comprises a side punch (14), and the side punch (14) is arranged in the upper die of the stamping die through the inclined wedge mechanism.