Method for carrying out an automatic can changing process at a spinning station of a spinning machine, and spinning machine and movable can changer

Abstract

A method for carrying out an automatic can changing process at a spinning station of a spinning machine uses a movable can change. At the spinning station, a supply device delivers a sliver in a delivery direction from a sliver can positioned underneath the spinning station. The sliver is clamped with a clamp on the can changer and, once clamped, the silver is separated. after separation of the sliver, the supply device is driven counter to the delivery direction such that a sliver residue remaining at the spinning station is returned by the supply device and ejected from the spinning station.

1 .- 16 . (canceled) 
     
     
         17 . A method for carrying out an automatic can changing process at a spinning station of a spinning machine with a movable can changer, wherein at the spinning station a supply device delivers a sliver in a delivery direction from a sliver can positioned underneath the spinning station, the method comprising:
 clamping the sliver with a clamp on the can changer;   once clamped, separating the sliver; and   after separation of the sliver, driving the supply device counter to the delivery direction such that a sliver residue remaining at the spinning station is returned by the supply device and ejected from the spinning station.   
     
     
         18 . The method according to  claim 17 , wherein the sliver residue is removed from a sliver guide at the spinning station and disposed of. 
     
     
         19 . The method according to  claim 17 , wherein the sliver is separated while production of a yarn from the sliver is underway at the spinning station. 
     
     
         20 . The method according to  claim 17 , wherein a length of the sliver residue is predefined and stored in a control, once the predefined length of the sliver residue has been reached, the can changing process is initiated and the shyer is separated. 
     
     
         21 . The method according to  claim 17 , wherein the sliver can is initially pulled by the can changer out from underneath the spinning station into a position in front of the spinning station before the shyer is clamped, and the sliver is then clamped at a front edge of the sliver can facing the spinning station. 
     
     
         22 . The method according to  claim 17 , wherein the clamp is a fixed clamp on a can gripper of the can changer. 
     
     
         23 . The method according to  claim 17 , wherein the sliver is separated by by the can changer moving the sliver can with the clamped sliver away from the spinning station. 
     
     
         24 . The method according to  claim 17 , wherein the clamp is a movable clamp, and the sliver separated by moving the movable clamp relative to the can. 
     
     
         25 . The method according to  claim 17 , wherein the sliver residue is removed by a suction device of the spinning machine or the can changer. 
     
     
         26 . A spinning machine, comprising:
 a plurality of adjacently arranged spinning stations;   each of the spinning stations comprising a supply device to deliver sliver to a spinning device;   a control unit, wherein the control unit is configured to carry out the process according to  claim 17 .   
     
     
         27 . The spinning machine according to  claim 26 , wherein the spinning stations each comprise a measuring device configured to determine a length of the sliver residue to be spun, a value for the length of the sliver residue predefined and stored in the control unit such that the can changing process is initiated when the value for the length of the sliver residue is reached. 
     
     
         28 . The spinning machine according to  claim 26 , further comprising a handling device configured to remove the remaining sliver residue from a sliver guide at the spinning station. 
     
     
         29 . A movable can changer, comprising:
 a can gripper;   a fixed clamp on the can gripper; and   the movable can changer configured to perform the method for carrying out an automatic can changing process at a spinning station of a spinning machine in accordance with  claim 17 .   
     
     
         30 . The movable can changer according to  claim 29 , further comprising a movable clamp configured on the can gripper. 
     
     
         31 . The movable can changer according to  claim 29 , further comprising a handling device configured to remove the sliver residue remaining at the spinning station from a sliver guide of the spinning station. 
     
     
         32 . The movable can changer according to  claim 31 , wherein the handling device comprises a suction device.