Circular weaving machine

Abstract

A circular weaving machine includes a warp feeding system and a cloth coiling system. The warp feeding system includes a warp feeding motor, a warp feeding motor controller, a warp feeding device anda drive system. The warp feeding motor is a permanent magnet brushless direct current motor or a permanent magnet synchronous motor, the warp feeding motor controller is in communication connection with a main motor, the warp feeding device is provided with a warp feeding rod, and the drive system is driven by the warp feeding motor and used for driving the warp feeding device and the warp feedingrod of the circular weaving machine. The warp feeding motor controller makes the speed of warp yarn and the speed of the warp feeding rob synchronized and the speed adjustable in advance through control over the motor speed, and the warp feeding motor controller adopts a timing stop control method. Through the timing stop control method, shutdown of the warp feeding system can be delayed, the phenomenon that excessive warp yarn is fed is effectively avoided, and the problem is effectively solved that an existing warp feeding motor and a main motor shunt down and stop at the same time and thuswarp yarn thus is easily broken. The shut-down time can be controlled and adjusted, and the service life of the whole circular weaving machine is effectively guaranteed.

Description

technical field [0001] The invention relates to the technical field of a weaving machine, in particular to a motor specially used for the warp let-off system of a circular loom. Background technique [0002] A general circular loom includes a main engine, a let-off system, a cloth rolling system, 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. First, will the machine be in a state of frequent downtime? Frequent downtime will reduce production efficiency and increase costs. Second, the energy saving status of the machine, because the woven bags produ...

AI Technical Summary

Problems solved by technology

3. Whether the quality or efficiency will be affected after temporary shutdown or restart after failure or replacement of parts

[0003] The let-off system motors of circular looms generally use three-phase torque asynchronous motors, which lead to high energy consumption due to poor efficiency, power factor and load rate of AC asynchronous motors.

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

Furthermore, due to the high input power, once a temporary stop occurs, the stop time of each motor between the warp let-off motors is different, and the warp is easy to be broken or over-feed due to inertia.