Magnetic force self-sustaining electro-magnetic selector of knitting machine

Abstract

The invention relates to a magnetic force self-sustaining electro-magnetic selector of a knitting machine. The electro-magnetic selector is used in the knitting machine. A magnetic core of the electro-magnetic selector is made of high-remanence low-coercive-force magnetic materials, a coil of the magnetic core is connected with a pulse output interface of a control circuit board through a wire, the control circuit board processes knitting needle selection signals input through a data interface to output positive or negative short pulse drive signals from the pulse output interface to the coil of the magnetic core, so that the magnetic core gets into high-magnetic saturation instantly, and an N or S pole strong magnetic field is accordingly generated on the end face and is kept all the time. The magnetic force self-sustaining electro-magnetic selector has the advantages that the structure is reasonable; the maximum operating frequency of a tool bit of the selector can reach more than 200 Hz, and the selector is small in power consumption and low in heating amount when working for a long time; in addition, the selector is stable in work, safe, reliable and environmentally friendly, and energy is saved.

Description

technical field [0001] The invention relates to an electromagnetic needle selector for a knitting machine with self-maintaining magnetic force, specifically an electromagnetic needle selector that utilizes a magnetic core made of a material with high remanence and low coercive force to make the needle selector of a knitting machine work at low power consumption and high frequency. Solenoid selector with magnetic force. Background technique [0002] In the traditional knitting machine, the magnetic core of the needle selector is made of soft magnetic material. In the working state, there must be continuous current to generate magnetic force. The generated magnetic flux is relatively low between 40-60mT, so the reaction speed is relatively slow. The highest stable working frequency of the cutter head swing is generally between 100-150 Hz, and the magnetic force of the magnetic core disappears immediately after the coil is disconnected from the power supply! Therefore, the...

AI Technical Summary

Problems solved by technology

[0002] In the traditional knitting machine, the magnetic core of the needle selector is made of soft magnetic material. In the working state, there must be continuous current to generate magnetic force. The generated magnetic flux is relatively low between 40-60mT, so the reaction speed is relatively slow. The highest stable working frequency of the cutter head swing is generally between 100-150 Hz, and the magnetic force of the magnetic core disappears immediately after the coil is disconnected from the power supply! Therefore, the electromagnet coil needs to be continuously energized for a long time during work, and the temperature of the magnetic core will continue to rise under long-term work, and most of the power consumption is wasted on maintaining the magnetic force.

In order to reduce the calorific value of the electromagnet, there is also a product of a certain manufacturer that uses a high-voltage power supply when working and reduces the working voltage when not working. Although it can reduce part of the heat, the effect is not obvious, and the cumulative temperature of long-term work is still relatively high. , and the magnetic core suction decreases at low voltage, it is easy to cause dislocation of the needle selection head of the needle selector when it is under force, resulting in the phenomenon of weaving wrong flowers, resulting in unnecessary waste, so the needle selector in the knitting machine works with low power Energy consumption, low calorific value, high frequency, high efficiency and high stability are the problems that the knitting industry has always wanted to solve

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