S-shaped spring extrusion punching die

Abstract

The invention discloses an S-shaped spring extrusion punching die. A lower die comprises a lower die cavity, an upper die comprises an upper die block matched with the lower die cavity, the lower die cavity comprises a U-shaped lower die groove, semicircular protrusions are symmetrically arranged on the two sides of the lower die groove, and the outer sides of the protrusions are connected with lower shearing openings; the upper die block comprises an upper protruding block matched with the lower die groove, upper die grooves matched with the protrusions are symmetrically formed in the two sides of the upper protruding block, and the outer sides of the upper die grooves are connected with upper shearing blade portions. The machining manner of an S-shaped spring is thoroughly changed; the traditional curling and bending manner is abandoned, through the cooperation effect of an upper die and the lower die, the upper die block and the lower die cavity are used for extruding a steel wire for molding, through the extrusion molding manner, the machining speed of the S-shaped spring can be greatly improved, in the machining process, manual extrusion is not needed, and labor force can be saved; due to the fact that the lower shearing openings and the upper shearing blade portions are arranged, the lower shearing openings and the upper shearing blade portions can directly shear off redundant steel wires while the upper die and the lower die carry out extrusion.

Description

technical field [0001] The invention relates to a machining die, in particular to an S-shaped spring extrusion punching die. Background technique [0002] S-shaped spring is also called serpentine spring, its elastic force is superior to that of spiral spring, but its disadvantage is that it is not strong. Suitable for making sofa backrests or upholstered sofa bases. Existing S-shaped springs are generally formed by winding and bending steel wires, which require a special bending machine for bending and forming, and after forming a continuous strip, according to actual needs, the strip-shaped S-shaped spring Cut to form a single spring, which is used in the next manufacturing process. In the prior art, a special bending machine is required to wind and bend the steel wire, which increases the processing cost, and the bending accuracy of the generally low-cost bending machine is poor, and it is difficult to guarantee the product quality. The use of expensive bending equipme...

AI Technical Summary

Problems solved by technology

In the prior art, a special bending machine is required to wind and bend the steel wire, which increases the processing cost, and the bending accuracy of the generally low-cost bending machine is poor, and it is difficult to guarantee the product quality

The use of expensive bending equipment will increase the burden on the enterprise, and the applicability is poor

Furthermore, the continuous strip formed after bending requires a special shearing machine to be cut into shape. Firstly, it is necessary to purchase a shearing machine for shearing processing. Second, increasing the shearing step will increase the processing cost and reduce the production efficiency. Not conducive to improving the company's competitive advantage

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