Rapier loom weft scissors

Abstract

The invention discloses rapier loom weft scissors, and belongs to the technical field of rapier loom accessories. The weft scissors are characterized in that a weft hook knife (4) is rotationally arranged on a hook knife mounting frame (9) through a hook knife rotating shaft (6); a rotating wheel (12) rotationally arranged in the vertical direction is disposed on one side face of the hook knife mounting frame (9), and a push rod (11) and a pull rod (14) are hinged to the end face of the rotating wheel (12) separately; the rotating wheel (12) is hinged to the tail portion of the weft hook knife(4) through the push rod (11), and the rotating wheel (12) is fixedly connected with one side of a cutter (3) through the pull rod (14). The push rod and the pull rod which are hinged to the rotatingwheel can be matched with the cutter to move back and forth to synchronously push the head portion of the weft hook knife to swing upwards or sink downwards, and the cutter and the weft hook knife are coordinating in action, so that the weft cutting time and frequency are controlled in a specific position and time, and the weft breaking phenomenon is avoided. The installation height and inclination angle of the cutter can be adjusted freely according to needs, and the cutter can be conveniently replaced in time.

Description

technical field [0001] A rapier loom weft scissors belongs to the technical field of rapier loom accessories. Background technique [0002] The rapier loom is a shuttleless loom that uses a reciprocating sword-like rod to fork or clamp the weft yarn into the shed. The rapier loom supplies weft from outside the machine, and the weft yarn is actively controlled by the rapier head, so the quality of weft insertion is high. Its main product is fabrics for clothing. Compared with other weft insertion methods, the weft insertion method of rapier looms is suitable for multi-color weft insertion, and can produce products with 12-color weft insertion and multi-pattern patterns, including various types of wefts in the past. Yarn, production of various types of fabrics. Positive rapier drive can complete weft insertion for many yarns that are difficult to weft insertion. [0003] However, in the weaving process of the original configuration of weft yarn scissors, it was found that b...

AI Technical Summary

Problems solved by technology

[0003] However, in the weaving process of the original configuration of weft yarn scissors, it was found that because the current weft yarn cutting structure adopts a chain transmission mechanism, the cam in the scissors box for cutting weft yarns is worn out, resulting in excessive clearance between the components, making the cutting time inaccurate and affecting The accuracy of the weft insertion action of the follow-up rapier head is affected, resulting in a large number of weft breaks, which seriously affects the production efficiency; at the same time, the device has many moving parts, the maintenance is time-consuming and laborious, and the replacement of vulnerable parts is inconvenient, which increases the maintenance cost.

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