Special motor for circular weaving machine

Abstract

A special motor for a circular weaving machine comprises a permanent magnet brushless direct-current motor or permanent magnet synchronous motor, a permanent magnet brushless direct-current motor or permanent magnet synchronous motor controller and a motor transmission system, wherein the permanent magnet brushless direct-current motor or permanent magnet synchronous motor controller comprises a control module, an angular position measuring unit, a speed obtaining and feedback module and an initial positioning module; the angular position measuring unit is used for measuring angular position signals of a stator and a rotor of the permanent magnet brushless direct-current motor or permanent magnet synchronous motor; the speed obtaining and feedback module is used for outputting a real speed signal of the permanent magnet brushless direct-current motor or permanent magnet synchronous motor and feeding the real speed signal back to the control module. Compared with a conventional alternating-current asynchronous motor, the motor has the advantages that the permanent magnet brushless direct-current motor or permanent magnet synchronous motor is adopted on the circular weaving machine, so that the motor has high efficiency, high power factor, good capacity index, small size, low weight and low temperature rise.

Description

technical field [0001] The invention relates to the technical field of a weaving machine, in particular to a motor specially used for a circular loom. Background technique [0002] A general circular loom includes a main engine, a warp let-off system, a winding device, and a frame; the main engine includes a main motor, a transmission system, a warp opening and delivery mechanism, and a weft insertion mechanism, and the weft insertion mechanism includes an upper door ring, a lower door ring, The connecting column, the shuttle and the propeller; the transmission system includes a pulley, a main shaft and a support; the transmission system is driven by the main motor. The quality of circular looms can be evaluated from the following aspects. 1. Will the machine shut down frequently? Frequent downtime will reduce production efficiency and increase costs. The second is the energy-saving status of the machine. Because the woven bags produced by the circular loom are fast-moving...

AI Technical Summary

Problems solved by technology

[0003] The current circular looms generally use Y series three-phase asynchronous motors, which lead to high energy consumption due to the efficiency, power factor difference and load rate of AC asynchronous motors.

The efficiency caused by the loss is about 80%, and due to factors such as frequency conversion nonlinear distortion, discontinuous state, slope effect and other factors, the actual efficiency is below 80%, the control accuracy and the stability of the circular loom become worse, and its efficiency and life are low.

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