A tamper-proof cold stamping drawing die

Abstract

The invention discloses an anti-displacement cold stamping drawing mold, and aims to provide a drawing mold capable of effectively and quickly positioning a drawing plate, effectively protecting the plate and guaranteeing the finished product quality. The anti-displacement cold stamping drawing mold comprises a concave mold positioned on the upper side, and a convex mold positioned on the lower side; the concave mold includes a molding table; a plate cavity is formed in the convex mold; multiple pre-limiting parts are arranged on the concave mold; the pre-limiting parts include pre-limiting cylinders and positioning frames; the positioning frames are provided with pressing bars rotationally connected with the positioning frames through middle parts; transverse slide holes are formed in the pressing bars; rotating shafts are arranged in the transverse slide holes; piston rods of the pre-limiting cylinders are rotationally connected with the rotating shafts; and a pre-limiting anti-interference cavity is formed in the concave mold. The anti-displacement cold stamping drawing mold has the following beneficial effects: the anti-displacement cold stamping drawing mold can provide effective clamping and fixation to guarantee smooth actuation of previous drawing process, has an automatic ejecting structure for automatically realizing ejection after mold separation, and can continuously fix the plate after failure of a pre-positioning structure to realize automatic deviation when the mold is to be closed, so that the smoothness of mold closing process is maintained.

Description

technical field

[0001] The invention belongs to the technical field of drawing dies, in particular to an anti-tampering cold stamping drawing die. Background technique

[0002] There are many types of cold stamping dies, ranging from simple inner panel dies to large outer cover dies, and drawing dies, or drawing dies, are also commonly used. In automobile production, it is often necessary to stretch out L-shaped or similar L-shaped panels. However, this type of plate often has the phenomenon of part stringing in production. The reason for the problem is that the common material steel plate is straight, but the cross-sectional shape of the mold table of this type of plate or plate is close to L-shaped. When the flat After the straight plate is placed on the mold, there will be a section of the plate warped. The mold forms the plate by clamping the upper and lower molds. When the upper mold moves downward, the lower surface first contacts the plate with a relatively high warp...

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