Weft yarn handling apparatus in a jet loom

Dispositif pour manipuler des fils de trame dans une machine à tisser à jet

Vorrichtung zum Handhaben von Schussfäden in einer Düsenwebmaschine

Abstract

The weft yarn handling apparatus for a jet looms includes means (8a) for unwinding the weft from a weft supply cheese (3). The length of the unwound weft yarn (Y) is measured and the yarn is stored on a drum (8b) of the measuring and storing device (8) The weft (Y) thus measured and reserved is then transferred to the main nozzle (13) of an air jet loom and then inserted through the shed by fluid injected from the main picking nozzle (13). On the downtream side of the weft measuring and storage device (8) there is a nozzle block arrangement (15; 12, 8a, 15a, 15b, 16) for transferring weft yarn from the measuring and storage device (8) to the main nozzle 13 and in addition means (40) for retaining weft yarn in the case of a weft yarn break. The nozzle block further includes means (22) for cutting the weft (Y) at a predetermined position while said part of the weft (Y) is being retained by said retaining means (40). One cut end of weft yarn (Y) is blown or sucked to a trash box (19) and the other end is guided to the region of suction adjacent to the inlet of weft injection main nozzle (13). The arrangement is operated automatically by a control C, that starts operating when a weft yarn break is detected that required threading of the main nozzle (13). The arrangment provides for a non complicated, fast threading of the main nozzle (13) and low failure rate.

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Patent Citations (3)

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    EP-0372618-A1June 13, 1990Picanol N.V.Düsenwebmaschine mit verbesserter Schussfadenzufuhr
    EP-0388680-A2September 26, 1990Kabushiki Kaisha Toyoda Jidoshokki SeisakushoWeft processing apparatus in a jet loom
    US-4890650-AJanuary 02, 1990Kabushiki Kaisha Toyoda Jidoshokki SeisakushoDetecting and removing faulty weft in a jet loom

NO-Patent Citations (0)

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Cited By (1)

    Publication numberPublication dateAssigneeTitle
    EP-0544623-A1June 02, 1993Kabushiki Kaisha Toyoda Jidoshokki SeisakushoApparatus and method for feeding a weft yarn