Passive yarn cutter

Abstract

The invention discloses a passive yarn cutter which is characterized by comprising a cutter rest, a yarn-cutting blade, a safe cutter cover and a yarn-capturing device; the yarn-cutting blade is obliquely arranged on the cutter rest; the cutting edge thereof is scissor-type and form a yarn-leading groove with the cutter rest and a notch of the safe cutter cover; and the yarn-capturing device which arranges filament bundles into the yarn-leading groove is arranged at the front of the cutter rest. Compared with the prior art, the yarn cutter has the advantages of fast yarn capturing and yarn cutting, high success ratio of yarn cutting, simple structure and stable quality of products.

Description

technical field [0001] The invention relates to a shredder in a textile machine, in particular to a shredding device for catching and cutting silk threads during the spinning process of chemical fiber filaments. Background technique [0002] During the spinning process of the automatic doffing false twist texturing machine, the chemical fiber filament needs to be wound onto the bobbin through the winding mechanism to complete the winding of the thread. When a bobbin is fully wound, it is necessary to automatically replace the bobbin through a series of mechanical action combinations. During this process, the filaments must be cut and the winding stopped. On the one hand, the broken filaments are sent to the suction device for the spinning of empty bobbins, and on the other hand, new bobbins are replaced. [0003] The device used to cut the filament is called the shredding device. Usually, there are two types of shredding devices, one is active shredding, that is, after the...

AI Technical Summary

Problems solved by technology

The disadvantages of this shredder are: 1. Only one blade is installed in the wire guide groove. When the tow is driven in, it does not directly hit the blade but hits the other side of the wire guide groove without a blade. Cannot be effectively cut off instantly

2. The wire catcher adopts a rotary cylinder, which has a complex structure and high cost

3. The wire catching rod adopts a steel wire rod structure. When the tow is thick and the strength is high, the tow cannot be caught, and the broken wire fails, which causes the failure of automatic doffing and the machine cannot operate normally.

Images