Weft yarn cutting mechanism of warp knitting machine

Abstract

The invention discloses a weft yarn cutting mechanism of a warp knitting machine. The weft yarn cutting mechanism comprises an upper blade, a lower blade, and also comprises an upper blade up-down reciprocating movement mechanism, a lower blade reciprocating transverse movement mechanism and a clamping mechanism, wherein the upper blade and the lower blade are arranged up and down and used for cutting weft yarns, the upper blade up-down reciprocating movement mechanism drives the upper blade to move up and down in a reciprocating manner along the vertical direction of the warp knitting machine, the lower blade reciprocating transverse movement mechanism drives the lower blade to implement the reciprocating transverse movement along the length direction of the cross beam guide rail of the warp knitting machine, and the clamping mechanism clamps the weft yarns sent by a weft yarn frame of the warp knitting machine between the upper blade and the lower blade. According to the weft yarn cutting mechanism disclosed by the invention, the weft yarns sent by the weft yarn frame of the warp knitting machine in the unfolding state can be cut with fixed length, raw materials are saved, the waste is avoided, the structure is simple, the work is reliable, the cutting precision is high, and the weft yarn cutting mechanism is particularly suitable for being promoted and applied in a multi-axial warping knitting machine taking carbon fibers as raw materials.

Description

technical field [0001] The invention relates to a yarn cutting mechanism, in particular to a weft yarn cutting mechanism of a warp knitting machine. Background technique [0002] Chinese utility model patent ZL201120128272.1, the open specification titled warp knitting machine cloth cutting device discloses a cloth cutting device, which includes a disc-shaped cutting blade, the disc-shaped cutting blade includes an upper blade and a lower blade, the cutting blade The cloth device also includes an upper knife seat, an upper knife seat shell, a lower knife seat and a lower knife seat shell; The seat housing is fixedly installed on the frame of the warp knitting machine; the lower blade is fixedly installed on one end of the lower knife seat, and the lower knife seat is rotatably installed in the lower knife seat shell, and the lower knife seat shell is fixedly installed on the warp knitting machine. On the frame; the upper blade and the lower blade are arranged in the vertica...

AI Technical Summary

Problems solved by technology

The cloth cutting device of this structure can cut the warp-knitted fabric to meet the prescribed width requirements, but it also has the following defects in the work, that is, the cloth cutting device cannot cut off the weft yarn sent from the weft yarn frame of the warp knitting machine at a fixed length. Weft yarn, especially when the weft yarn material is expensive carbon fiber, often causes a lot of waste

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