Patent EP-0216220-A2 (EP)
Inventor: TAKEHANA TATSUO
IPC: D03D47/36
Filed: 1986-09-04
Abstract: A method of automatically resetting a weft storage device (1) wherein a weft yarn (2) delivered from a supplier (3) is wound around an outer circumference of a storage drum (8) by a rotable movement of a rotatable yarn guide (7) and engaging operation of an engaging pin (9) while the weft yarn (2) is metered and stored on said storage drum (8), and the weft yarn (2) on said drum (8) is engaged with or released from an engaging pin (9) which is retractable toward a circumference surface of said storage drum (8), said method comprising steps of a first step of stopping said rotatable yarn guide (7) at a prescribed first stoppage postion (P1) when the weft yarn (2) is broken between said supplier (3) and a main nozzle (11) for weft insertion, a second step of holding the weft yarn (2) in said rotatable yarn guide (7) by a yarn holder (21) and rotating again said rotatable yarn guide (7) to a second stoppage position (P2) to thereby interpose the weft yarn (2) in a moving path of said rotatable yarn guide member (22), a third step of guiding the weft yarn (2) to said main nozzle while the weft yarn (2) is held by movement of said yarn guide member (22), and fourth step of winding in advance the weft yarn (2) around the circumference of said storage drum (8) at a prescribed number of turns by a rotation of said rotatable yarn guide (7) while said engaging pin (9) is advanced to the circumference surface of said storage durm (8). An apparatus for automatically resetting a weft storage device comprising a storage drum (8) having an outer circumference around which a weft yarn (2) delivered from a supplier (3) is wound, a rotatable yarn guide (7) rotatable around said storage drum (8) for winding the weft yarn (2) supplied from said supplier (3) around the surcumference of said storage drum (8), an engaging pin (9) provided retractably toward a circumference surface of said storage drum (8) for engaging the weft yarn (2) to meter and store the weft yarn (2) around said storage drum with cooperation of a rotatable movement of said rotatable yarn guide (7) and for releasing the weft yarn (2) to allow the weft yarn (2) to be in free state, a rotation controller (23) for stopping said rotatable yarn guide (7) at a first prescribed stoppage position (P1) when the weft yarn (2) is broken between said supplier (3) and a main nozzle (11) for weft insertion and rotatably moving said rotatable yarn guide (7) to a second stoppage position (P2), a holder (21) holding an end of the weft yarn (2) in said rotatable yarn guide (7), a yarn guide member (22) for holding the weft yarn (2) stretched between said holer (21) and said rotatable yarn guide (7) positioned at the second stoppage position, guiding the weft yarn (2) to a main nozzle (11) and releasing the weft yarn (2), and a preparation winding controller (43) for allowing said engaging pin (9) to advance to the circumference of said storage drum (8) upon confirmation of advance of said yarn guide member (22), issuing a preliminary signal to said rotation controller (23) to wind the weft yarn (2) around said storage drum at a prescribed number of turns.