Steel wire tension control method and device for winding multi-strand helical spring

Abstract

The invention relates to a tension control device of wrapping manufacturing multi-strand coil spring steel wire which includes a steel wire tension adjusting and signal radiation part, a steel wire tension signal receiving displaying part; the steel wire tension adjusting and signal radiation part includes an inner layer steel wire rotary rack and an outside layer rotary rack, the inner / outside layer steel wire rotary racks are equipped with an individual rack; the individual rack inside is equipped with a force sensor, the steel wire is educed from a third directive wheel through the force sensor; the force sensor on each individual rack of the inner / outside layer steel wire connects with a tension measuring plate circuit and a radio sending circuit through lead; the steel wire tension signal receiving displaying part includes a radio receiving plate, a computer and a display. The device has advantages that each steel wire of wrapped spring has basic coincident tension by controlling each steel wire tension of multi-strand coil spring, spring working is reliable and working life is prolonged.

Description

technical field [0001] The invention relates to a control device for winding steel wire ropes, in particular to a tension control device for winding and manufacturing multi-strand spiral spring steel wires. Background technique [0002] The multi-strand coil spring is a coil spring made of multiple strands of steel wire twisted into a steel cable and wound at the same time. Its structure is divided into coreless strands and cored strands (core strands are also divided into 1 strand or multiple strands of steel wire) coil spring. Multi-strand coil springs are characterized by high flexibility and high reliability, and have obvious advantages over coil springs wound by single-strand steel wires. At present, they are widely used in key parts such as reset and buffer of special machinery. In the machinery industry It has great promotion and application value. However, the manufacturing of multi-strand coil springs is relatively difficult, and increases with the increase in the...

AI Technical Summary

Problems solved by technology

However, it is more difficult to manufacture multi-strand coil springs, and it increases with the increase of the number of strands of steel wire, and also increases with the increase of the number of layers of steel wire.

The existing manufacturing technology is to pull each strand of steel wire from the steel wire box to the cable twister for direct twisting. Each strand of steel wire has no tension constraint and is completely random. The result is a multi-strand spiral The stress of each strand of steel wire in the spring is inconsistent, resulting in inconsistent timing of the contribution of each steel wire to the load at each working point of the coil spring when the coil spring is working, and the stress distribution is inconsistent, so that the load of each finished coil spring produced has a large dispersion. resistance, generally fluctuating above 200N, the qualified rate of coil spring finished products is only about 20%

When the coil spring is working, the difference between the direct pressure and the rebound force is greater than 35%, and the serious misalignment between the coils occurs when the coil spring is working, which makes it seriously interfere with the working mechanism; on the other hand, due to the inconsistency of the steel wire stress, As a result, the fatigue life of each steel wire of the coil spring is quite different, often causing individual steel wires to break in advance

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