Automatic cop changing device for a weaving machine

Details Automatic cop changing device for a weaving machine Automatic cop changing device for a weaving machine

1989-11-29

1991-05-21

Falik, Andrew M.

Textiles: weaving

Weft manipulation

Replenishing

139 1R, 139224R, 139241, D03D 4520

Patent

active

050166778

ABSTRACT:
An automatic cop changing device for a weaving machine in which a shuttle carrying a cop consisting of a bobbin around which a weft is wound is reciprocated between warps so as to weave the weft between the warps, comprising: a cop positioning unit for securing the shuttle stationary near a terminal point of its reciprocating movement when the weft of a current cop mounted on the shuttle is consumed by more than a precribed amount; a cop storage unit for storing a plurlaity of new cops; a robot arm carrying a weft gripping hand for drawing the weft from the current cop and a weft from one of the new cops stored in the cop storage unit, and crossing the two wefts, a cop engaging hand for moving the cop in the shuttle between its upright position and its retracted position, and a cop gripping hand for removing the old cop from the shuttle and carrying the new cop into the shuttle; a weft tying unit for tying the crossed part of the wefts; and a weft trimming unit for trimming an extraneous part of the tied weft. This device permits quick replacement of cops without causing undue strain on the weft. The advantageous use of a robot arm permits a compact and simple design of the entire device.

REFERENCES:
patent: 3228431 (1966-01-01), Merki
patent: 4063635 (1977-12-01), Heckel
patent: 4106973 (1978-08-01), Wright
patent: 4877061 (1989-10-01), Yarita et al.

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