Method for separating a broken warp thread at the warp stop motion from the warp sheet on a weaving machine, and a device which uses this method
AssigneePicanol N.V.
InventorDirk Gryson
Life of this patent
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Abstract
A method and apparatus for separating a broken warp thread at the warp stop motion from the warp sheet on a weaving machine in which the warp stop motion includes several rows of drop wires, the method including the step of extracting a loop in the broken warp thread caused by a sag as a result of the corresponding drop wire falling away from the fallen drop wire. The apparatus includes a series of suction or blower nozzles or grippers which are sequentially activated to pass the loop between the adjacent nozzles or grippers toward the side of the warp sheet.
Claims16
A method for removing a broken warp thread from a warp sheet at a warp stop motion, said warp stop motion including a plurality of warp threads forming the warp sheet extending in a first direction and a plurality of drop wires arrayed in rows, the rows extending in a second direction transverse to said first direction, said drop wires being arranged such that when one of said warp threads breaks, one of said drop wires falls, causing said broken warp thread to sag and form a loop, said method comprising the steps of:
- raising said fallen drop wire;
- removing the slack in said loop by forming a second loop adjacent said first loop in said first direction;
- and
- successively repeating said second loop forming step in said first direction, thereby successively removing the slack in said broken warp thread at a previous location opposite said first direction and causing the excess thread contained in said slack to move in said first direction towards an edge of the stop motion.
Dependencies are inferred from the claim text.