Anti-wrinkle welding tool

Abstract

The utility model discloses a kind of anti-crease upset welding tool, including upper die part and lower die part, the upper die part and the lower die part are oppositely arranged, the upper die part includes upper die, upper pressure ring, upper die holder and nitrogen gas spring, the upper die holder inner wall is inserted and is assembled with upper pressure ring, the upper pressure ring inner wall is inserted and is assembled with upper die, the surface of the upper pressure ring is assembled with multiple nitrogen gas springs, and the nitrogen gas spring is connected with equipment main body, the lower die part includes lower punch, lower pressure ring, lower die holder and nitrogen gas spring, the lower die holder inner wall is inserted and is assembled with lower pressure ring, the lower pressure ring inner wall is inserted and is assembled with lower punch, the lower end of the lower pressure ring is assembled with multiple nitrogen gas springs, and the nitrogen gas spring is connected with equipment main body, so reduce the structure optimization part forming process wrinkling problem, improve material utilization, both can better guarantee product quality and can improve production efficiency.

Description

Technical Field

[0001] This utility model relates to the field of stamping and welding fixtures, specifically to an anti-wrinkling stamping and welding fixture. Background Technology

[0002] In the CAE analysis process, existing automotive stamping parts have wrinkling problems. These problems are often solved by applying for ECR from the OEM to change the shape or adding additional wrinkle-absorbing areas. However, the probability of obtaining ECR approval from the OEM is extremely low. During the analysis process, it was found that the lower punch contacting the material before forming is beneficial to improving wrinkling. However, the lower punch contacting the material first will cause the material to move unstably during the forming process. Adding wrinkle-absorbing areas will reduce material utilization and increase part costs. Utility Model Content

[0003] The purpose of this utility model is to provide an anti-wrinkling welding fixture to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: an anti-wrinkling punching and welding fixture, comprising an upper die portion and a lower die portion, wherein the upper die portion and the lower die portion are disposed opposite to each other;

[0005] The upper mold part includes an upper die, an upper pressure ring, an upper mold base, and nitrogen springs. The upper pressure ring is inserted into the inner wall of the upper mold base, and the upper die is inserted into the inner wall of the upper pressure ring. Multiple nitrogen springs are mounted on the surface of the upper pressure ring, and the nitrogen springs are connected to the main body of the equipment.

[0006] The lower die part includes a lower punch, a lower pressure ring, a lower die base, and nitrogen springs. The lower pressure ring is inserted into the inner wall of the lower die base, and the lower punch is inserted into the inner wall of the lower pressure ring. Multiple nitrogen springs are installed at the lower end of the lower pressure ring, and the nitrogen springs are connected to the main body of the equipment.

[0007] The parts have a large difference in shape, which causes wrinkling during the molding process. To address this, an upper pressure ring is added during molding. This ring contacts the material first, clamps the material, and allows the lower punch to contact the material first. After the upper pressure ring moves upward along the equipment's guide rail to the bottom, the lower pressure ring moves downward along the equipment's guide rail to complete the molding process.

[0008] Preferably, both the upper and lower pressure rings are powered by nitrogen springs. The upper and lower pressure rings move along the guide rail of the equipment via these pressure sources. The upper pressure ring is controlled by a separate pressure source, and the lower pressure ring is controlled by a separate pressure source. The pressure source, namely the nitrogen spring, clamps the sheet in advance to prevent the lower punch from touching the sheet first and causing it to move. The two independently controlled springs allow for better control of the material feeding speed during the forming process, ensuring good forming.

[0009] Compared with the prior art, the beneficial effects of this utility model are as follows: the upper pressure ring is installed on the upper die base, and moves along the guide rail with the upper pressure source as power. The upper die is installed on the upper die base and can penetrate the inner wall of the upper pressure ring. The lower pressure ring is installed on the lower die base, and moves along the guide rail with the lower pressure source as power. The sheet metal is placed between the upper and lower pressure rings, and the sheet metal is clamped by the upper and lower pressure rings. The lower punch touches the material first and then stretches and forms the sheet metal. This reduces the wrinkling problem in the forming process of the structurally optimized parts, improves the material utilization rate, and can better ensure product quality and improve production efficiency. Attached Figure Description

[0010] Figure 1 This is a three-dimensional structural schematic diagram of the present invention.

[0011] In the diagram: 1-Upper die, 2-Upper pressure ring, 3-Upper die base, 4-Lower pressure ring, 5-Lower die base, 6-Lower punch, 7-Nitrogen spring. Detailed Implementation

[0012] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0013] Please see Figure 1 This utility model provides an anti-wrinkling punching and welding fixture, including an upper die part and a lower die part, which are arranged opposite to each other;

[0014] The upper mold part includes an upper die 1, an upper pressure ring 2, an upper mold base 3, and a nitrogen spring 7. The upper pressure ring 2 is inserted into the inner wall of the upper mold base 3, and the upper die 1 is inserted into the inner wall of the upper pressure ring 2. Multiple nitrogen springs 7 are mounted on the surface of the upper pressure ring 2, and the nitrogen springs 7 are connected to the main body of the equipment.

[0015] The lower die part includes a lower punch 6, a lower pressure ring 4, a lower die base 5, and nitrogen springs 7. The lower pressure ring 4 is inserted and assembled into the inner wall of the lower die base 5, and the lower punch 6 is inserted and assembled into the inner wall of the lower pressure ring 4. Multiple nitrogen springs 7 are assembled at the lower end of the lower pressure ring 4, and the nitrogen springs 7 are connected to the main body of the equipment.

[0016] The part has a large difference in shape, which causes wrinkling during the molding process. To address this, an upper pressure ring 2 is added during the molding process. This ring is used to contact the material first, clamping the material so that the lower punch 6 contacts the material first. After the upper pressure ring 2 moves upward along the equipment's guide rail to the bottom, the lower pressure ring 4 moves downward along the equipment's guide rail to complete the molding process.

[0017] Both the upper pressure ring 2 and the lower pressure ring 4 are powered by nitrogen springs 7, which move along the guide rail of the equipment.

[0018] The upper pressure ring 2 is controlled by a separate pressure source, and the lower pressure ring 4 is controlled by a separate pressure source, namely the nitrogen spring 7. The pressure source clamps the sheet in advance to prevent the lower punch 6 from touching the sheet first and causing it to move. The two independently controlled pressure sources can better control the material feeding speed during the forming process and ensure good forming.

[0019] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A crease-resistant flash welding tool, characterized by: It includes an upper mold portion and a lower mold portion, which are arranged opposite to each other; The upper mold part includes an upper die (1), an upper pressure ring (2), an upper mold base (3), and a nitrogen spring (7). The upper pressure ring (2) is inserted into the inner wall of the upper mold base (3), and the upper die (1) is inserted into the inner wall of the upper pressure ring (2). Multiple nitrogen springs (7) are mounted on the surface of the upper pressure ring (2), and the nitrogen springs (7) are connected to the main body of the equipment. The lower die part includes a lower punch (6), a lower pressure ring (4), a lower die base (5), and nitrogen springs (7). The lower pressure ring (4) is inserted into the inner wall of the lower die base (5), and the lower punch (6) is inserted into the inner wall of the lower pressure ring (4). Multiple nitrogen springs (7) are installed at the lower end of the lower pressure ring (4), and the nitrogen springs (7) are connected to the main body of the equipment.

2. A flash welding tool according to claim 1, wherein: Both the upper pressure ring (2) and the lower pressure ring (4) are powered by nitrogen springs (7), which move along the guide rail of the equipment.

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