Inclined wedge type pre-extending drawing mould

Abstract

The invention relates to a drawing mould, in particular to an inclined wedge type pre-extending drawing mould. The inclined wedge type pre-extending drawing mould comprises a concave mould, a convex mould and a material pressing ring, wherein a lower movable material pressing plate is arranged on the material pressing ring; an upper movable material pressing plate is arranged on the concave mould; an upper inclined wedge guide plate is arranged on the lower movable material pressing plate; a lower inclined wedge guide plate is arranged on the convex mould; the upper inclined wedge guide plate and the lower inclined wedge guide plate are mutually matched, so that an inclined wedge assisted drawing mechanism drives the lower movable material pressing plate to move during drawing and molding; synchronous motion between the upper movable material pressing plate and the lower movable material pressing plate is realized through a synchronous mechanism, so that the upper movable material pressing plate and the lower movable material pressing plate clamp plates to simultaneously assist drawing while plate drawing and molding is guaranteed, and therefore, materials sufficiently flow, and are uniformly deformed; a motion gap is reserved between the upper inclined wedge guide plate and the lower inclined wedge guide plate, so that the movable material pressing plate does not move when an air cushion of a press is guaranteed to be pre-started and pre-accelerated; and relative distance, in a punching direction, of the upper inclined wedge guide plate and the lower inclined wedge guide plate is regulated, so that size of the motion gap can be regulated.

Description

technical field [0001] The invention relates to a drawing die, in particular to a wedge type pre-stretching drawing die. Background technique [0002] At present, my country's auto market is becoming saturated, and the competition among major auto brands is becoming increasingly fierce. Coupled with increasingly stringent environmental protection requirements, a major issue facing auto manufacturers is to reduce costs throughout the value chain. For body outer panels, under the premise of meeting the quality of the sheet metal, improving the utilization rate of materials is the first requirement. In the traditional stamping process, measures such as optimizing the supplementary surface of the process, reducing the drawing depth, and optimizing the layout are usually used to improve the material utilization rate. At present, the most common problem of the outer cover of the shallow-drawn sheet is insufficient rigidity, which will cause the vehicle to run. The phenomenon of r...

AI Technical Summary

Problems solved by technology

In the traditional stamping process, measures such as optimizing the supplementary surface of the process, reducing the drawing depth, and optimizing the layout are usually used to improve the material utilization rate. At present, the most common problem of the outer cover of the shallow-drawn sheet is insufficient rigidity, which will cause the vehicle to run. The phenomenon of restlessness at times leads to increased driving noise. In order to avoid the problem of insufficient rigidity during stamping and forming, it is required that the drawing depth should not be too shallow, which brings a great bottleneck to the improvement of material utilization.

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