An oblique punching die structure and punching method for automobile sheet metal stamping parts

Abstract

The invention relates to a die structure for an automobile metal plate punch piece and a punching method thereof, and provides a slant punching die structure of the automobile metal plate punch piece. The slant punching die structure of the automobile metal plate punch piece comprises a first sliding block mechanism (15) which moves horizontally and is provided with a punching concave die (8) and a second sliding block mechanism which moves aslant and is provided with a punching convex die (4). A material returning rod (10) is connected with the first sliding block mechanism through a limiting unit and a reset spring (9). When the material returning rod (10) makes contact with a stop dog (13), the reset spring (9) is pressed, the end portion of the material returning rod (10) moves outward and stretches out of waste material (19) pushed out of a hole cavity of the punching concave die (8). The punching method comprises the four stages that a die is opened, and the punch piece is placed; the die is closed, and punching is conducted; punching is finished, and the die is opened; the waste material is pushed out, and the punch die is taken out. According to the slant punching die structure of the automobile metal plate punch piece and the punching method thereof, the waste material of a slant punched hole is guaranteed to smoothly flow to a waste material sliding plate or a waste material groove, at the same time, the specific intensity of the die can be improved, the conveying condition of taking and placing the punch piece on a production line is improved, stable component positioning is guaranteed, the production takt is improved, and the production efficiency is improved.

Description

technical field [0001] The invention relates to a die structure and punching method for automobile sheet metal stamping parts, in particular to an oblique punching die structure and punching method for automobile sheet metal stamping parts. Background technique [0002] At present, in the field of automobile manufacturing, the outflow direction of waste materials for punching sheet metal stamping parts is usually the same as the punching direction. This stamping method is generally feasible for flat stamping parts. Feeding, punching , Cutting, also suitable for automation. However, for the edge of one side of the plate, it is bent twice to form a cross-section similar to an n shape, and punching holes at the folded edge, it is difficult to discharge the waste after loading, punching, blanking and punching, especially for flat plates Parts with larger areas are more difficult. For example, the rear cover parts of passenger cars have a large area, and several rectangular lam...

AI Technical Summary

Problems solved by technology

[0006] Second, for the horizontal side punching mechanism, although the normal punching and waste flow can be completed after the bending side is placed vertically, the vertical or oblique placement of the non-bending side will cause parts The drop and depth are large, and the pick-and-place stroke of the parts in the production process of the automatic line is particularly large, and the running stroke of the upper mold is large, which seriously affects the beat of the assembly line and production efficiency. In addition, the positioning of the parts is difficult, and the unstable positioning will increase the scrap rate and shutdown rate. It will cause losses to production, and it will also cause the shape of the waste outflow path to be complicated, and it is easy to store waste, and it is invisible. These are taboos for automated production

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