Control method of yarn hooking and releasing device of three-dimensional loom

Abstract

The invention relates to a control method of a yarn hooking and releasing device of a three-dimensional loom. The control method comprises the following steps that 1) a user sets a distance between ayarn and a hook knife; 2) the stroke of the hook knife and a rapier is calculated according to the distance information; 3) a motor rotates forwardly, a lead screw platform slides, and the hook knifeand the rapier reach specified positions; 4) an air cylinder moves to drive a lifting ring to move with the yarn, so that the yarn is inclined, and the yarn is in a hook knife backhaul path; 5) the motor rotates reversely, so that the hook knife and the rapier return, the yarn slides into the hook knife in the movement process and is hooked by the hook knife; 6) the hook knife and the rapier return to the designated positions, the end of a lever is in contact with a rapier positioning table, and the lever moves forwards, so that the hook knife rotates and the yarn is disengaged; 7) the motor rotates forwardly, the lever and the rapier positioning table are no longer in contact; and 8) a return spring returns the hook to the original position. According to the control method, the pluralityof yarns can be hooked and released at the same time, the weft insertion efficiency and reliability are improved, and the industrial requirements of the three-dimensional woven fabric are met.

Description

【Technical field】 [0001] The invention relates to a control method of a three-dimensional loom, in particular to a control method of a yarn hooking device of a three-dimensional loom, and belongs to the technical field of three-dimensional weaving. 【Background technique】 [0002] With the rapid development of modern industry, three-dimensional woven composites have been widely concerned in various industrial fields. As the main production device of three-dimensional woven composite materials, the three-dimensional loom needs to increase the degree of automation and reduce the damage of yarn weaving. [0003] Different from ordinary looms, three-dimensional looms have great designability in yarn hook placement, which can improve the degree of production and production reliability through yarn hook placement. Therefore, the use process requires the design of the three-dimensional loom yarn hooking device. However, the yarn weft insertion mechanism in the prior art has a low ...

AI Technical Summary

Problems solved by technology

However, the yarn weft insertion mechanism in the prior art has a low degree of automation and serious yarn wear, resulting in low efficiency and low product quality of the three-dimensional loom

Images