Low-speed spinning threading control system

Abstract

A low-speed spinning threading control system comprises a metering pump, a winder and a frequency converter, a second speed signal is added to a frequency conversion control board of the frequency converter, when a stop signal of the winder is sent, a second speed of the frequency converter is triggered, and when a start signal of the winder is sent, the frequency converter is switched to a first speed automatically. Speed switching of the frequency converter is achieved through a multispeed terminal S5. The frequency converter further comprises a metering pump operation control terminal S1 with a start-stop function, when the S1 is on and the S5 is on, the metering pump is in high-speed operation; when the S5 is off, the metering pump is in low-speed operation; and when the S1 is off, no matter the S5 is on or off, the metering pump is out of operation. The stop / start signals of the winder are sent through a relay, and contacts of the relay are connected with the multispeed terminal S5. By the aid of the low-speed spinning threading control system, when the winder brakes down to stop operation, the rotating speed of the metering pump is automatically controlled to be decreased through the signals, waste silk quantity is decreased greatly, and production cost is reduced for enterprises.

Description

technical field [0001] The invention relates to the technical field of spinning, in particular to a low-speed spin-in control system for spinning. Background technique [0002] A spinning machine is a machine that forms a fiber-forming polymer solution or melt into filaments. According to different fiber spinning methods, the spinning machine is divided into three types: wet spinning machine, melt spinning machine and dry spinning machine. Among them, the wet spinning machine is suitable for spinning viscose fiber, acrylic fiber, vinylon, etc. The wet spinning machine is further divided into: (1) Short fiber spinning machine: the spinning stock solution is introduced from the infusion tube, accurately metered by the metering pump, filtered through the filter and entered into the spinneret, and squeezed out from the spinneret hole to enter the coagulation After solidification, the nascent fibers are collected into bundles through the godet and then washed or stretched. (2)...

AI Technical Summary

Problems solved by technology

[0005] However, in the above spinning process, abnormal production conditions such as spinning trimming, winding machine failure, and broken filaments will occur basically every day in spinning production. The winding machine stops working, but the speed of the metering pump cannot be automatically reduced, and the spinneret continues to spin, resulting in an increase in the amount of waste silk

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