Steel wire drawing and releasing automatic tracing and controlling method and device for multi-wire cutting machine

Abstract

The invention relates to a steel wire automatic tracing method and an automatic tracing device in a wire drawing device and a wire releasing device of a multi-wire cutting machine. The automatic wire drawing device and the automatic wire releasing device respectively use a servo motor, a gear rack driving transportation platform, wherein, two trolley wheels are arranged on the transportation platform, and a steel wire passes between the two trolley wheels; the transportation platform are respectively provided with two rotary encoders linking with the two trolley wheels; the rotary encoders are connected with a controller which is connected with the servo motor. The motion direction of the servo motor is determined by the two rotary encoders respectively through the controller so as to automatically correct the position of the steel wire in the wire drawing device and the wire releasing device to ensure that the steel wire is closely and uniformly arranged in the wire drawing device and the wire releasing device. The steel wire drawing and releasing automatic tracing and controlling method and the device for multi-wire cutting machine of the invention can reduce broken wires caused by nonuniform wire drawing and releasing of the wire drawing device and the wire releasing device of the multi-wire cutting machine by more than 95%, which increases the reliability of the machine and ensures the cutting quality of the multi-wire cutting machine for hard materials, such as monocrystalline silicon, polycrystalline silicon and the like, so that the economic benefit is increased.

Description

1. Technical field: [0001] The invention relates to a steel wire tracking control method in a multi-wire cutting machine take-up and pay-off device, in particular to a steel wire automatic tracking method in a multi-wire cutting machine take-up and pay-off device and an automatic tracking device for realizing the method. 2. Background technology: [0002] Multi-wire cutting machine is a kind of machine that uses thin steel wire to cut hard materials such as monocrystalline silicon and polycrystalline silicon. During the cutting process, the steel wire periodically reciprocates at high speed, and there is an acceleration and deceleration process. Each wire wheel must perform a wire take-up and pay-off process within a cycle. Since the diameters of the take-up and pay-off wheels change, the take-up 1. The angular velocity of the pay-off reel also changes, so it is necessary to ensure that the steel wires are evenly arranged on the take-up and pay-off reel. [0003] see image...

AI Technical Summary

Problems solved by technology

In the production process of multi-wire cutting machines cutting hard materials such as monocrystalline silicon and polycrystalline silicon, the receiving and unwinding devices used ordinary gear reduction motors for speed regulation. This kind of motor has slow speed response and poor instantaneous commutation performance. The frequent positive and negative movement of the pulley and the change of angular velocity will often cause the steel wire to not be evenly wound on the wire pulley, which will cause the steel wire on the take-up and pay-off pulley to be arranged in a spindle shape, and even cause the steel wire to break and make silicon Fragments are broken, causing large economic losses

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