Hot stamping die of snakelike cooling water channel type

Abstract

The invention discloses a hot stamping die of a snakelike cooling water channel type, and the hot stamping die comprises a convex die insert and a concave die insert, which are arranged in a paired manner. The convex die insert is provided with a convex part so as to enable the cross section of the convex die insert to be convex. The concave die insert is provided with a concave part so as to enable the cross section of the concave die insert to be concave. The interiors of the convex and concave die inserts are respectively provided with a snakelike cooling water channel, and the depths of the snakelike cooling water channels are set in a manner that the bottoms of the snakelike cooling water channels are close to surface where the convex die insert with the concave die insert. The hot stamping die is simple in machining mode, has no cooling dead zone, and is uniform in cooling degree and speed. Moreover, the sizes of the inserts are not limited, thereby simplifying the structure of the die, improving the machining efficiency, achieving a good cooling effect, facilitating the assembly and maintenance, and reducing the cost.

Description

technical field [0001] The invention relates to a die, in particular to a stamping die. Background technique [0002] Hot stamping forming technology is a new process that utilizes the characteristics of rapid increase in plasticity and ductility and rapid decrease in yield strength of metals at high temperatures to form parts on hot stamping dies, and at the same time use die cooling and quenching to achieve ultra-high strength. The use of hot stamping technology can not only overcome the fatal defects of traditional high-strength steel plate forming difficulties and low dimensional accuracy of parts, but also significantly improve the safety and comfort of automobiles, reduce vehicle weight, and reduce gas emissions. Hot forming technology is suitable for the manufacture of parts with high comfort and safety requirements and high strength levels (about 1500Mpa), such as bumpers, anti-collision beams, B-pillars and their reinforcements, etc. These parts are made of traditio...

AI Technical Summary

Problems solved by technology

Existing hot stamping dies generally adopt the way of drilling holes in the inserts to arrange cooling water channels. The processing of the cooling system requires professional 5-axis drilling equipment, and deep hole drilling is difficult and inefficient; and due to the limitation of processing methods, the type For parts with complex surfaces, the straight water pipe cannot be well close to the surface of the mold, and the cooling efficiency is reduced; at the same time, the depth of the drilling limits the size of the inserts that constitute the hot stamping die, making the number of inserts too large and the mold structure complex

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