Flanging die counter pull mechanism

Abstract

The invention belongs to the technical field of automobile die machining, and particularly relates to a flanging die counter pull mechanism. The flanging die counter pull mechanism comprises a fixing base assembly, a rotating pair element, a spring assembly and a flanging element. One end of the rotating pair element is arranged on the fixing base assembly and can slide along the fixing base assembly, the other end of the rotating pair element is fixedly connected with the flanging element, the spring assembly is fixed to the rotating pair element, the spring assembly is connected with an upper base, the upper base is arranged above the rotating pair element, the end of the rotating pair element is fixedly connected with the flanging element, and a material contacting point of the flanging element faces the inclined lower portion and the fixing base assembly. The flanging die counter pull mechanism has the advantages that when an upper die insert is pressed thoroughly, the stress direction is good, the folded edges of a workpiece cannot be damaged by twisting, and the precision and the service life of the workpiece are guaranteed.

Description

technical field [0001] The invention belongs to the technical field of automobile mold processing, and in particular relates to a back-drawing mechanism of a hemming mold. Background technique [0002] With the development of automobile industry technology, people's requirements for automobiles have increased from practicability and reliability to comfort, aesthetics, safety, practical economy, etc., and many new requirements have been put forward for automobile bodies. Requirements, especially the surface quality of covered door and cover parts. The quality of the surface of the outer door cover parts plays a decisive role in the appearance quality of the whole vehicle. For example, the inner and outer panels of the car door. In order to ensure the appearance quality, the outer door panel and the inner panel of the door cannot be spot welded Welding, but after they are formed and trimmed separately, the hemming process is used, that is, the outer door panel is turned over ...

AI Technical Summary

Problems solved by technology

In the ordinary hemming mold, the upper mold knife block (or the upper mold insert) is always under the force, directly pressed to death by the upper mold insert, and the component force reacted to the workpiece will be very small, not only by If the force direction is not good, the hemming effect is not good, and there will be traces on the workpiece, so that the outer plate will have debris falling, which will affect the appearance of the hemming product

In addition, in the prior art, the direction of the spring pin and the hinge axis are not on a straight line, the spring is easily bent under force, and the spring pin is also bent accordingly, and breaks at the weakest area of ​​the thread, resulting in a short service life

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