Winding material expansion device

Abstract

The invention relates to a winding material expansion device ( 10 ). In the winding material expansion device ( 10 ) a winding material ( 5 ) is guided in a meandering manner between rollers ( 16, 17, 18, 19 ) for guiding and/or expanding the winding material ( 5 ). For simplifying a removal of the winding material ( 5 ) from the winding material expansion device ( 10 ) and/or introducing the winding material ( 5 ) into the winding material expansion device ( 10 ) rollers ( 16, 17 ) are displaceable, in particular pivotable, such that in a removal position of the rollers ( 16, 18 ) the winding material is freely accessible.

1 . A device for a winding machine for a winding material in the form of a bundle of fibres, the device having a first roller and a second roller, said first roller and second roller being arranged for guiding the winding material along a meandering path, wherein the first roller is displaceable between
 a) a first operating position, wherein in the first operating position the winding material is guided along said meandering path, and   b) a second operating position, wherein in the second operating position a distance of the first roller from the second roller is larger than the distance of the first roller from the second roller in the first operating position,   c) wherein the first operating position is a winding position and the second operating position is at least one position of the group of positions consisting of: a removal position for the winding material and a introduction position for the winding material.   
     
     
         2 . The device according to  claim 1  with an actuator for causing the movement of the first roller between the first operating position and the second operating position. 
     
     
         3 . The device according to  claim 2 , wherein the actuator is a pneumatic actuating cylinder. 
     
     
         4 . The device according to  claim 2 , wherein the actuator is built with a turret of the winding machine. 
     
     
         5 . The device according to  claim 1 , wherein the movement of the first roller is a movement around a pivot axis. 
     
     
         6 . The device according to  claim 5 , wherein the pivot axis has an orientation transverse to a conveying direction of the winding material. 
     
     
         7 . The device according to  claim 5 , wherein the pivot axis has an orientation parallel to a conveying direction of the winding material. 
     
     
         8 . The device according to  claim 2 , wherein a drive mechanism is connected between the actuator and the first roller. 
     
     
         9 . The device according to  claim 4 , wherein a drive mechanism is connected between the actuator and the first roller. 
     
     
         10 . The device according to  claim 8 , wherein the connection of the drive mechanism between the actuator and the first roller is releasable. 
     
     
         11 . The device according to  claim 9 , wherein the connection of the drive mechanism between the actuator and the first roller is releasable. 
     
     
         12 . The device according to  claim 11 , wherein the release of the drive mechanism is controlled by a movement. 
     
     
         13 . The device according to  claim 8 , wherein the drive mechanism is built with a lever which is pivoted about a pivot axis which has an orientation parallel to an axis of rotation of the coil to be wound, wherein the actuator acts on a first lever portion and the first roller is arranged on a second lever portion. 
     
     
         14 . The device according to  claim 13  comprising a rotatable cam acting on the first lever portion. 
     
     
         15 . The device according to  claim 14 , wherein the actuator is linked with a crank wherein the crank drives the cam. 
     
     
         16 . The device according to  claim 14 , wherein the cam is connected with a coupling shaft for actuating another cam causing a movement of a first roller of an adjacent device. 
     
     
         17 . The device according to  claim 15 , wherein the cam is connected with a coupling shaft for actuating another cam causing a movement of a first roller of an adjacent device. 
     
     
         18 . The device according to  claim 14 , wherein at least one element of the group of elements consisting of the actuator, the cam, the coupling shaft and the crank is mounted with the machine frame. 
     
     
         19 . A traversing device for a winding machine comprising at least one device according to  claim 1 . 
     
     
         20 . A Winding machine having at least one traversing device according to  claim 19 . 
     
     
         21 . The winding machine according to  claim 20  comprising at least one turret rotatably retaining two spindles, wherein in an alternating fashion
 a) a coil is wound in a winding station and 
 b) a completely wound coil is removed in a changing station. 
 
     
     
         22 . The winding machine according to  claim 21 , wherein the winding machine comprises at least one device of the group of devices consisting of:
 a) a changing device moving the winding material automatically from a spindle with a completely wound coil located thereon to the other spindle,   b) a catch device for catching the winding material during the changing process,   c) a separation device for separating the winding material after the changing process and   d) a change-over thread guide for removing the winding material in the removal position of the first roller from device.   
     
     
         23 . Method for operating a winding machine comprising a traversing device according to  claim 19 , a turret and two spindles wherein the spindles are rotated by the turret between a winding station and a changing station, the method comprising the following steps:
 a) winding a coil at the winding station while the first roller is in the winding position,   b) moving the first roller from the winding position into the removal position,   c) removing the winding material from the device,   d) transferring the winding material to an empty spindle,   e) introducing the winding material into the device and   f) moving the first roller from the removal position into the winding position.