Opening and stopping delay protection device for spinning workshop

Abstract

The invention discloses an opening and stopping delay protection device for a spinning workshop. The structure of the device comprises an alternating current power source, a first circuit breaker, anda first button. After a first contactor is de-energized and disconnected, the normally open auxiliary contact of the first contactor inputs a jump negative pulse to the input end of a PLC. The outputend of the PLC works. A first relay is closed. The normally closed contact of the first relay is disconnected. After a circuit timer in the PLC reaches the set time, the first relay is disconnected.The normally closed contact of the first relay of a control loop is closed to achieve the stopping delay protection. After a first metering pump is started, the normally open auxiliary contact of thefirst contactor inputs a jump positive pulse to the input end of the PLC. The output end of the PLC works. A second relay, a third relay, and a fourth relay are closed. The normally closed contacts ofthe second relay, the third relay, and the fourth relay of the control loop are disconnected to achieve the opening delay protection. Therefore, the beneficial effects of eliminating the phenomenon of filaments in the middle of a finished wire due to false operation and improving the product quality are achieved.

Description

technical field [0001] The invention relates to the technical field of time-delay protection for opening and stopping positions, in particular to an additional time-delay protection device for opening and stopping positions in a spinning workshop. Background technique [0002] In the chemical fiber industry, filaments appearing in the middle of the finished yarn is a problem that cannot be eliminated. In addition to mechanical reasons, the misoperation of the operator is also an important factor for the production of filaments. After pressing the stop button by mistake, press the start button immediately. As long as this period of time is not too long, the finished yarn will not break. The test shows that: in the normal production process, after pressing the stop button for seven seconds, and then pressing the start button, the finished yarn will continue, and this section of finished yarn is in the inspection room. After testing, it was found that the thinnest part of the f...

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the deficiencies of the existing technology, a delay protection device for opening and stopping positions is proposed in the spinning workshop to solve the phenomenon of filaments appearing in the middle of the finished yarn caused by misoperation, so as to prevent the occurrence of filaments in the middle of the finished yarn caused by misoperation. The phenomenon of filaments, the beneficial effect of improving product quality

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