Pick length setting method and device for use with a picking app

Details Pick length setting method and device for use with a picking app Pick length setting method and device for use with a picking app

1987-07-13

1988-07-12

Jaudon, Henry S.

Textiles: weaving

Weft manipulation

Weaving with stationary weft supply

242 4701, D03D 4736

Patent

active

047563443

ABSTRACT:
In a picking apparatus comprising: a weft yarn measuring and storing device including pick length adjusting mechanism capable of varying pick length, for winding a weft yarn on a weft yarn measuring drum to measure and store the weft yarn on the weft measuring drum; a picking nozzle for inserting the weft yarn released from the weft yarn measuring drum into a shed of warp by means of a fluid jet; and a weft yarn detector disposed at a fixed position on the weft yarn arrival side, outside and near the warp; a pick length setting method comprising: a data input process in which data at least including a target adjustment length is given to calculating means; a calculating process in which data corresponding to the target adjustment, for adjusting the setting of the pick length adjusting mechanism is obtained through calculation; a pick length adjusting process in which an initial pick length is diminished or increased gradually during tentative picking operation to a pick length which causes the weft yarn detection signal of the weft yarn detector to change; and a target pick length setting process in which a final mode of operation of the pick length adjusting mechanism is decided on the basis of the calculated data corresponding to the target adjustment length.

REFERENCES:
patent: 4595039 (1986-06-01), Tholander
patent: 4627474 (1986-12-01), Tholander
patent: 4702285 (1987-10-01), Sugita

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