Selvage portion gripping device for loom, loom, and method of manufacturing woven fabric

Abstract

A device is capable of reducing occurrence of cloth fell retreat at a selvage portion of a woven fabric and warp yarn looseness in a base cloth selvage portion when a high-density woven fabric is woven at a high speed. The selvage portion gripping device for a loom has a space where a selvage portion can pass in which the selvage portion formed by weaving additional yarns and weft yarns can pass through in a woven fabric forwarding direction, a small space where the weft yarn can move in which the weft yarn can move in the woven fabric forwarding direction, and a means to maintain a woven condition of the selvage portion even when the weft yarn is cut with a weft yarn cutter.

1 - 7 . (canceled) 
     
     
         8 . A loom on which a weft yarn nozzle, a weft yarn cutter, and a selvage portion gripping device are mounted, wherein
 the selvage portion gripping device comprises a space where a selvage portion can pass in which the selvage portion formed by weaving additional yarns and weft yarns can pass through in a woven fabric forwarding direction, a tiny space where the weft yarn can move in which the weft yarn can pass through, and a device that maintains a woven condition of the selvage portion even when the weft yarn is cut with a weft yarn cutter,   the selvage portion gripping device is only disposed at a weft yarn nozzle side of the woven fabric, or the selvage portion gripping device is disposed both at the weft yarn nozzle side of the woven fabric and an opposite side of the weft yarn nozzle,   when the selvage portion gripping device is disposed at the weft yarn nozzle side, the weft yarn cutter is provided between the weft yarn nozzle and the selvage portion gripping device, and   when the selvage portion gripping device is disposed at the opposite side of the weft yarn nozzle, the selvage portion gripping device is provided between the other weft yarn cutter provided at the opposite side of the weft yarn nozzle and the woven fabric.   
     
     
         9 . The loom according to  claim 8 , wherein the device that maintains the woven condition of the selvage portion in the selvage portion gripping device is an elastic part that catches the selvage portion existing in the space where the selvage portion can pass. 
     
     
         10 . The loom according to  claim 9 , wherein the elastic part that catches the selvage portion is a part formed of a plate spring, or an elastic member and a plate material. 
     
     
         11 . A loom on which a weft yarn nozzle, a weft yarn cutter, and a selvage portion gripping device are mounted, wherein
 the selvage portion gripping device comprises a space where a selvage portion can pass in which the selvage portion formed by weaving additional yarns and weft yarns can pass through in a woven fabric forwarding direction, a small space where the weft yarn can move in which the weft yarn can pass through, and an elastic part which catches the selvage portion,   the selvage portion gripping device is only disposed at a weft yarn nozzle side of the woven fabric, or the selvage portion gripping device is disposed both at the weft yarn nozzle side of the woven fabric and an opposite side of the weft yarn nozzle,   when the selvage portion gripping device is disposed at the weft yarn nozzle side, the weft yarn cutter is provided between the weft yarn nozzle and the selvage portion gripping device, and   when the selvage portion gripping device is disposed at the opposite side of the weft yarn nozzle, the selvage portion gripping device is provided between the other weft yarn cutter provided at the opposite side of the weft yarn nozzle and the woven fabric.   
     
     
         12 . A method of manufacturing a woven fabric where a predetermined number of warp yarns are parallelized, additional yarns are parallelized on an outside of the parallelized warp yarns, and a weft yarn is supplied to the warp yarns and the additional yarns, comprising: by using the loom according to  claim 8 , gripping a selvage portion by a selvage portion gripping device for a loom that exists in the loom at the time of cutting the weft yarn. 
     
     
         13 . The method according to  claim 12 , further comprising gradually separating the additional yarns from the selvage portion discharged from the selvage portion gripping device for the loom. 
     
     
         14 . A method of manufacturing a woven fabric where a predetermined number of warp yarns are parallelized, additional yarns are parallelized on an outside of the parallelized warp yarns, and a weft yarn is supplied to the warp yarns and the additional yarns, comprising: after the weft yarn is supplied and the woven fabric is subjected to reed beating, gripping a selvage portion formed by weaving the additional yarns and the weft yarns when the weft yarn is cut between the weft yarn at a side where the weft yarn is supplied and the selvage portion formed by weaving additional yarns and weft yarns. 
     
     
         15 . The method according to  claim 14 , wherein when the weft yarn at the side where the weft yarn is supplied is further cut, the selvage portion formed by weaving the additional yarns and the weft yarns is gripped between the woven fabric and the cut portion. 
     
     
         16 . The method according to  claim 14 , wherein the additional yarn has a total fineness larger than total fineness of the weft yarn. 
     
     
         17 . A selvage portion gripping device for a loom mounted on a loom, the selvage portion gripping device comprising: a space where a selvage portion can pass in which the selvage portion formed by weaving additional yarns and weft yarns can pass through in a woven fabric forwarding direction; and a small space where the weft yarn can move in which the weft yarn can pass through, wherein
 the selvage portion gripping device is only disposed at a weft yarn nozzle side of the woven fabric, or the selvage portion gripping device is disposed both at the weft yarn nozzle side of the woven fabric and an opposite side of the weft yarn nozzle, when the selvage portion gripping device is disposed at the weft yarn nozzle side of the woven fabric, a weft yarn cutter is provided between the weft yarn nozzle and the selvage portion gripping device, when the selvage portion gripping device for the loom is disposed at the opposite side of the weft yarn nozzle, the selvage portion gripping device is provided between the woven fabric and the weft yarn cutter which is allocated at the opposite side of the weft yarn nozzle and, accordingly, the selvage portion gripping device for the loom comprises a means for maintaining a woven condition of the selvage portion even when the weft yarn is cut with the weft yarn cutter of the loom.   
     
     
         18 . The selvage portion gripping device according to  claim 17 , further having an elastic part that catches the selvage portion. 
     
     
         19 . The method according to  claim 12 , wherein the additional yarn has a total fineness larger than total fineness of the weft yarn. 
     
     
         20 . The method according to  claim 14  comprising gradually separating the additional yarns from the selvage portion discharged from the selvage portion gripping device for the loom. 
     
     
         21 . The method according to  claim 20 , wherein the additional yarn has a total fineness larger than total fineness of the weft yarn.