Weaving Machine Comprising Pneumatic Weft Insertion

Abstract

The weaving machine comprises a pneumatic weft insertion. It is fitted with a weaving reed ( 12 ), wherein a guiding device ( 42 ) is associated with a guiding channel ( 40 ) for a weft thread ( 10 ). The guiding channel ( 10 ) comprising the weaving reed ( 12 ) can be pivoted between an insertion position and a stop position for the weft thread ( 10 ). Also, a fixed weft thread insertion device ( 8 ), which comprises at least two blast nozzles ( 22 ), is associated with the guiding channel ( 40 ) in the insertion position. A fixed blade ( 46 ) is used to cut the inserted weft thread ( 10 ). The blast nozzles ( 22 ) are pivotably mounted in the transversal direction (Q) counter to the blade ( 46 ) in order to improve the weaving machine and are connected by means of a motor drive device ( 28 ) in order to displace the blast nozzles ( 22 ) counter to the blade ( 46 ).

1 . A weaving machine comprising pneumatic weft insertion, with a reed which is assigned a guide device with a guide duct for a weft thread, the guide duct being pivotable, together with the reed, between an insertion position and a beating-up position for the weft thread, furthermore the guide duct being assigned, in the insertion position, a fixed weft insertion device with at least two blow nozzles, and also with fixedly arranged shears for cutting off the inserted weft thread, characterized in that the blow nozzles are mounted pivotably in the transverse direction toward the shears and are connected to a motor drive device, in order to move the blow nozzles toward the shears. 
   
   
       2 . The weaving machine as claimed in  claim 1 , characterized in that the drive device is designed such that the cutting of an inserted weft thread takes place in the region of the beating-up edge of the cloth web. 
   
   
       3 . The weaving machine as claimed in  claim 1 , characterized in that the drive device is designed for the at least approximately coaxial alignment in each case of a blow nozzle in the transverse direction with respect to the guide duct. 
   
   
       4 . The weaving machine as claimed in  claim 1 , characterized in that the blow nozzles are mounted pivotably and can be driven further in the vertical direction transversely to the transverse direction. 
   
   
       5 . The weaving machine as claimed in  claim 4 , characterized in that the blow nozzles are connected to a further motor drive device for the vertical direction, in order to align one of the blow nozzles with the guide duct in the vertical direction. 
   
   
       6 . The weaving machine as claimed in  claim 1 , characterized in that the weft insertion device has a plurality of blow nozzles arranged in the transverse direction and in the vertical direction. 
   
   
       7 . The weaving machine as claimed in  claim 1 , characterized in that the motor drive devices have in each case a servomotor, direct-current motor or AC motor. 
   
   
       8 . The weaving machine as claimed in  claim 1 , characterized in that it has a control device for pattern control, which is connected to each motor drive device for the control of the latter. 
   
   
       9 . The weaving machine as claimed in  claim 1 , characterized in that the control device is designed such that, in the event of a thread break, the weft thread is not movable into the shears. 
   
   
       10 . The weaving machine as claimed in  claim 2 , characterized in that the drive device is designed for the at least approximately coaxial alignment in each case of a blow nozzle in the transverse direction with respect to the guide duct. 
   
   
       11 . The weaving machine as claimed in  claim 2 , characterized in that the blow nozzles are mounted pivotably and can be driven further in the vertical direction transversely to the transverse direction. 
   
   
       12 . The weaving machine as claimed in  claim 3 , characterized in that the blow nozzles are mounted pivotably and can be driven further in the vertical direction transversely to the transverse direction. 
   
   
       13 . The weaving machine as claimed in  claim 11 , characterized in that the blow nozzles are connected to a further motor drive device for the vertical direction, in order to align one of the blow nozzles with the guide duct in the vertical direction. 
   
   
       14 . The weaving machine as claimed in  claim 12 , characterized in that the blow nozzles are connected to a further motor drive device for the vertical direction, in order to align one of the blow nozzles with the guide duct in the vertical direction. 
   
   
       15 . The weaving machine as claimed in  claim 2 , characterized in that the weft insertion device has a plurality of blow nozzles arranged in the transverse direction and in the vertical direction. 
   
   
       16 . The weaving machine as claimed in  claim 3 , characterized in that the weft insertion device has a plurality of blow nozzles arranged in the transverse direction and in the vertical direction. 
   
   
       17 . The weaving machine as claimed in  claim 4 , characterized in that the weft insertion device has a plurality of blow nozzles arranged in the transverse direction and in the vertical direction. 
   
   
       18 . The weaving machine as claimed in  claim 5 , characterized in that the weft insertion device has a plurality of blow nozzles arranged in the transverse direction and in the vertical direction. 
   
   
       19 . The weaving machine as claimed in  claim 18 , characterized in that the motor drive devices have in each case a servomotor, direct-current motor or AC motor. 
   
   
       20 . The weaving machine as claimed in  claim 19 , characterized in that it has a control device for pattern control, which is connected to each motor drive device for the control of the latter.