Textile machine, especially spinning machine

In a textile machine, especially a spinning machine, an arrangement for doffing finished spools from a spindle rotatably mounted in said machine, said arrangement comprising:

• a slip-on mandrel axially aligned with said spindle, said mandrel being axially slidable in a gripper head and being normally disposed at a distance from said spindle;
• a cylinder/piston device interposed between said slip-on mandrel and said gripper head;
• means axially moving said gripper head with said slip-on mandrel therein in the direction of said spindle, the air in said cylinder incident to said movement being compressed upon abutment of one end of said slip-on mandrel with the adjacent end of said spindle, said compressed air tending to maintain said slip-on mandrel in abutting relation with said spindle;
• means sliding said finished spool off said spindle and onto said slip-on mandrel during said condition of abutment;
• and
• means axially moving said gripper head with said slip-on mandrel and the finished spool now carried thereby, in the direction away from said spindle.

In a textile machine, especially a spinning machine, with like winding devices arranged in tiers and having horizontal spool spindles, a spool changing carriage traversable along the machine and spool conveyor means traversable independently thereof along the machine, the improvement

• that the projecting spool spindles, the path of movement of the spool changing carriage as well as the path of movement of the spool conveyor means lie vertically underneath each other forwardly of the machine front;
• that the spool conveyor means have secured thereto, in projecting relationship and at a spacing corresponding to the distance between adjacent spindles, slip-on pins serving both as empty-spool storage devices and as finished-spool deposition locations;
• that there are provided means for traversing the spool changing carriage in a horizontal plane situated between the spool spindles and the path of movement of the spool conveyor means and that the carriage carries a gripper comprising a gripper shaft extending perpendicularly to the machine front, there being provided means for shifting said shaft in a forward and rearward direction, and said gripper having mounted thereon a crossarm the two ends of which carry a gripper head for finished spools and a gripper head for empty spools, respectively, so as to simultaneously execute a spool doffing operation and a spool donning operation, there being provided means for rotating said crossarm in a forward plane clear of said spool spindles, said spool changing carriage and said spool conveyor means;
• and
• that there are provided means for arresting the spool changing carriage and the spool conveyor means in predetermined locations such that at any time one spool spindle and one slip-on pin of the spool conveyor means lie on the path of movement of the gripper.