Die structure capable of reducing corner collapse
By employing a multi-tooth ring design in the mold structure to prevent lateral material flow, the problem of collapse exceeding product requirements was solved, resulting in process simplification and cost reduction.
Patent Information
- Application Number
- CN202520059782.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-10
- Publication Date
- 2026-02-06
- Estimated Expiration
- 2035-01-10
AI Technical Summary
During fine blanking, the collapse of the corners caused by the plastic flow of the material exceeds the product requirements, requiring multiple process corrections, resulting in high mold costs and pressure damage.
The mold structure with a multi-tooth ring design generates lateral force through the interaction of the tooth rings, which prevents the material from flowing laterally and reduces corner collapse.
It simplifies the production process, reduces corner collapse, lowers production costs, and improves production efficiency.
Smart Images
Figure CN223875894U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of stamping mold technology, specifically to a mold structure that can reduce corner collapse. Background Technology
[0002] Currently, during fine blanking, due to the plastic flow of the material, die roll inevitably occurs on one side of the workpiece. The die roll of some parts exceeds product requirements, necessitating multiple processes such as pre-punching and trimming to achieve the required die roll. These multiple processes result in longer die stations, higher die costs, and repeated shearing during stamping can lead to excessive burrs, causing pressure marks and cross-sectional issues. Utility Model Content
[0003] This invention aims to overcome the shortcomings of existing technologies by providing a mold structure that can reduce corner collapse.
[0004] The present invention solves the technical problem by adopting the following technical solution: a mold structure that can reduce corner collapse, comprising a punch and a die set opposite to each other, wherein the punch has at least one convex mold cavity and the die has at least one concave mold cavity, the convex mold cavity and the concave mold cavity are positioned correspondingly, a first toothed ring and a second toothed ring are provided on the outer side of the convex mold cavity, the first toothed ring has a gap between it and the outer edge of the convex mold cavity, and the second toothed ring is set in contact with the outer edge of the convex mold cavity; a third toothed ring and a fourth toothed ring are provided on the outer side of the concave mold cavity, the third toothed ring has a gap between it and the outer edge of the concave mold cavity, and the fourth toothed ring is set in contact with the outer edge of the convex mold cavity, the first toothed ring and the third toothed ring are positioned correspondingly, and the fourth toothed ring and the second toothed ring are positioned correspondingly.
[0005] In several embodiments, the first toothed ring and the second toothed ring are distributed along the trajectory of the outer edge of the convex model cavity and surround the outer edge of the convex model cavity.
[0006] In several embodiments, the third and fourth toothed rings are distributed along the trajectory of the outer edge of the convex model cavity and surround the outer edge of the concave model cavity.
[0007] In several embodiments, the first gear ring and the third gear ring are inverted V-shaped.
[0008] In several embodiments, the second and fourth gear rings include two inclined sidewalls and a horizontal upper wall disposed between the two sidewalls.
[0009] In several embodiments, the male die part comprises an upper die base, a guide plate is arranged below the upper die base, an upper backing plate and a clamping plate are arranged between the guide plate and the upper die plate, a male die plate is arranged below the guide plate, a male die body is arranged in the male die plate, and a male die cavity is arranged in the male die plate and cooperates with the male die body.
[0010] In several embodiments, the female die part comprises a female die plate, a female die body is arranged in the female die plate, a lower backing plate is arranged below the female die body, a lower die base is arranged below the lower backing plate, a female die cavity is arranged in the female die body, an ejection block is arranged in the female die cavity, and a force transmission pin is arranged below the ejection block.
[0011] The present application has the advantages that:
[0012] The present application has the advantages that: BRIEF DESCRIPTION OF DRAWINGS
[0013] The accompanying drawings described herein are for the purpose of illustrating selected embodiments and are not intended to limit the scope of the present application, and should not be considered as limiting the scope of the present application.
[0014] Figure 1 The overall structure of the die structure capable of reducing the collapse angle in the present embodiment is schematically shown;
[0015] Figure 2 The overall structure of the die structure capable of reducing the collapse angle in the present embodiment is schematically shown; Figure 1
[0016] Figure 3 The overall structure of the die structure capable of reducing the collapse angle in the present embodiment is schematically shown; Figure 1
[0017] Figure 4 The overall structure of the die structure capable of reducing the collapse angle in the present embodiment is schematically shown; Figure 1
[0018] Figure 5 The overall structure of the die structure capable of reducing the collapse angle in the present embodiment is schematically shown; Figure 1
[0019] Figure 6 The overall structure of the die structure capable of reducing the collapse angle in the present embodiment is schematically shown; Figure 5
[0020] Figure 7 The overall structure of the die structure capable of reducing the collapse angle in the present embodiment is schematically shown; Figure 5 DETAILED DESCRIPTION
[0021] In the following, the embodiments of the present application will be described in detail with reference to the drawings, so that the purpose, technical scheme and advantages of the embodiments of the present application are more clear. The technical scheme of the embodiments of the present application will be clearly and completely described in the following with reference to the drawings of the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, but not all the embodiments of the present application.
[0022] Therefore, the detailed description of the embodiments of the present application provided in the following with reference to the drawings is not intended to limit the scope of the claimed present application, but only represents the selected embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by the ordinary skilled in the art without making creative efforts are within the scope of the present application.
[0023] As shown in the drawings, specifically, the die structure capable of reducing the collapse angle mainly comprises a punch part and a die part arranged oppositely, which combine to stamp and form the material belt. Figures 1-2
[0024] Specifically, the punch part comprises an upper die seat 11, a guide plate 12 arranged below the upper die seat 11, an upper backing plate 13 and a clamping plate 14 arranged between the guide plate 12 and the upper die seat 11, a punch plate 15 arranged below the guide plate 12, a punch body 16 arranged in the punch plate 15, a punch cavity 100 arranged in the punch plate 15, the punch body 16 cooperating with the punch cavity 100, a force guiding pin 17 penetrating through the upper backing plate 13 and the clamping plate 14 until the punch plate 15, and the punch body 16 penetrating out of the punch plate 15 and the clamping plate 14 until the upper backing plate 13, so as to realize the transmission connection.
[0025] In addition, the die part comprises a die plate 21, a die body 22 arranged in the die plate 21, a lower backing plate 23 arranged below the die body 22, a lower die seat 24 arranged below the lower backing plate 23, a die cavity 200 arranged in the die body 22, an ejection block 25 arranged in the die cavity 200, and a force transmission pin 26 arranged below the ejection block 25, penetrating through the lower backing plate 23 and the lower die seat 24 to the outside.
[0026] In combination with Figures 3-7 As shown, specifically, the positions of the convex model cavity 100 and the concave model cavity 200 correspond, the convex model cavity 100 is provided with a first gear ring 31 and a second gear ring 32 on the outside of the convex model cavity 100, the first gear ring 31 is spaced apart from the outer edge of the convex model cavity 100, and the second gear ring 32 is arranged in close contact with the outer edge of the convex model cavity 100; the concave model cavity 200 is provided with a third gear ring 41 and a fourth gear ring 42 on the outside of the concave model cavity 200, the third gear ring 41 is spaced apart from the outer edge of the concave model cavity 200, and the fourth gear ring 42 is arranged in close contact with the outer edge of the concave model cavity 200; the positions of the first gear ring 31 and the third gear ring 41 correspond, and the positions of the fourth gear ring 42 and the second gear ring 32 correspond.
[0027] The first gear ring 31 and the second gear ring 32 are distributed along the track of the outer edge of the convex model cavity 100 and surround the outer edge of the convex model cavity 100, and the third gear ring 41 and the fourth gear ring 42 are distributed along the track of the outer edge of the convex model cavity 100 and surround the outer edge of the concave model cavity 200.
[0028] The first gear ring 31 and the third gear ring 41 are inverted V-shaped, and the second gear ring 32 and the fourth gear ring 42 include two inclined side walls 301 and an upper wall 302 arranged horizontally between the two side walls 301, and the second gear ring 32 and the fourth gear ring 42 are generally in the shape of an isosceles trapezoid.
[0029] Therefore, the first gear ring, the second gear ring, the third gear ring, and the third gear ring are matched to generate a transverse lateral force on the inner side, prevent the material from flowing transversely in the shear area, thereby reducing the product corner collapse, and the third gear ring and the third gear ring are closer to the material and can be used for distribution in the precision required area.
[0030] All the descriptions herein can be performed in any suitable order. Any and all examples, or exemplary language provided herein, merely to better illustrate the present application, are not intended to limit the scope of the present application unless the claims. The language in the detailed description should not be construed as indicating any essential factor to practice the present application that is not recited in the claims.
[0031] The present application describes the preferred embodiments, including the best way to practice the present application known to the present inventors. Of course, those skilled in the art can obviously see the changes of these preferred embodiments. The present inventors expect that skilled persons can use the changes as appropriate, and the present inventors indicate that the present application can be implemented in other ways different from the specific description herein. Therefore, the present application includes all improvements included in the main idea and scope of the present application defined by the claims. Moreover, unless otherwise stated or contextually obviously contradictory, the present application includes any of the above factors and all possible changes thereof.
Claims
1. A mold structure for reducing corner collapse, comprising a punch and a die disposed opposite to each other, wherein the punch has at least one punch cavity (100) and the die has at least one die cavity (200), the punch cavity (100) and the die cavity (200) being positioned correspondingly, characterized in that, The convex model cavity (100) is provided with a first gear ring (31) and a second gear ring (32) on the outside, the first gear ring (31) is spaced from the outer edge of the convex model cavity (100), and the second gear ring (32) is arranged in close contact with the outer edge of the convex model cavity (100); the concave model cavity (200) is provided with a third gear ring (41) and a fourth gear ring (42) on the outside, the third gear ring (41) is spaced from the outer edge of the concave model cavity (200), and the fourth gear ring (42) is arranged in close contact with the outer edge of the convex model cavity (100), the positions of the first gear ring (31) and the third gear ring (41) correspond, and the positions of the fourth gear ring (42) and the second gear ring (32) correspond.
2. The mold structure capable of reducing the sink marks according to claim 1, wherein, The first gear ring (31) and the second gear ring (32) are distributed along the track of the outer edge of the convex model cavity (100) and surround the outer edge of the convex model cavity (100) from the inside.
3. A mold structure capable of reducing a sink mark according to claim 2, wherein The third gear ring (41) and the fourth gear ring (42) are distributed along the track of the outer edge of the convex model cavity (100) and surround the outer edge of the concave model cavity (200) from the inside.
4. The mold structure capable of reducing the sink marks according to claim 3, wherein, The first gear ring (31) and the third gear ring (41) are inverted V-shaped.
5. A mold structure capable of reducing a sink mark according to claim 4, wherein The second gear ring (32) and the fourth gear ring (42) include two inclined side walls (301) and an upper wall (302) arranged horizontally between the two side walls (301).
6. A mold structure capable of reducing a sink mark according to claim 5, wherein The convex die part includes an upper die seat (11), a guide plate (12) is arranged below the upper die seat (11), an upper backing plate (13) and a clamping plate (14) are arranged between the guide plate (12) and the upper die seat (11), a convex die plate (15) is arranged below the guide plate (12), a convex die body (16) is arranged in the convex die plate (15), the convex model cavity (100) is arranged in the convex die plate (15), and the convex die body (16) cooperates with the convex model cavity (100).
7. A mold structure capable of reducing a sink mark according to claim 6, wherein The concave die part includes a concave die plate (21), a concave die body (22) is arranged in the concave die plate (21), a lower backing plate (23) is arranged below the concave die body (22), a lower die seat (24) is arranged below the lower backing plate (23), the concave model cavity (200) is arranged in the concave die body (22), and an ejection block (25) is arranged in the concave model cavity (200).