Winding – tensioning – or guiding – Helical or random winding of material – Including wound package or empty spool handling
Patent
1998-10-26
2000-05-02
Walsh, Donald P.
Winding, tensioning, or guiding
Helical or random winding of material
Including wound package or empty spool handling
B65H 5422
Patent
active
060562277
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
Our present invention relates to a method for automatically replacing peripherally driven thread bobbins on spooling devices of spinning machines for processing endlessly supplied textile threads and a spooling machine with a device by means of which the method can implemented.
BACKGROUND OF THE INVENTION
In such spinning machines full bobbins are removed as a rule while the machine operates in a so-called "random exchange", and are replaced by empty bobbins. Since the timing of the bobbin exchange and the bobbins which have to be replaced are largely determined at random, the machine has to be capable of carrying out this exchange automatically and at each spooling position, independently from other spooling positions. The resulting achieved advantage is the elimination of waiting time for the services of an operator or a robot. This again avoids standstill and loss of thread material when a bobbin is removed, or excessive length on the bobbins when they continue to run until they are replaced.
OBJECT OF THE INVENTION
It is the object of the invention to provide a spooling device with a replacement unit, by means of which a full bobbin can be automatically exchanged for an empty bobbin and for handling a continuously supplied thread.
SUMMARY OF THE INVENTION
The method of automatically replacing peripherally driven thread bobbins on spooling devices of a spinning machines for processing an endlessly supplied thread, according to the invention is characterized in that after a bobbin is full the supplied thread is guided towards a suction nozzle and a cutting device, whereby the supplied thread strand cut off by the cutting device is directed into the suction nozzle and the runoff strand is wound around the full bobbin. Then the full bobbin is released from its mounting and contact position at a drive roller and rolls on an inclined track from the winding position in a discharge position. Due to the motion of the full bobbin a prepared empty bobbin is released from its ready-to-use position to fall into the winding position in contact with the drive roller and into the mounting, where it is seized. The thread running in the suction nozzle is then wrapped around the empty bobbin by means of a thread-guiding element, and entraining the wrapped thread by the bobbin.
The spooling device on a spinning machine for processing endlessly supplied textile threads, works with a unit for automatically replacing thread bobbins which are mounted in a rotatable support and are peripherally driven by a drive roller against which they rest. The spooling device has the following components: direction of the thread, which takes up the oncoming strand of a cutoff thread; drive roller; position to a discharge position; releasing it; position to the winding position; and the thread suction nozzle can be applied to an empty bobbin guided into the winding position.
With this device a process run is made possible, wherein separate successive steps can be automatically initiated and performed. So for instance the mere opening of the clamping jaws holding a full bobbin not only releases the bobbin, but in addition the full bobbin rolls automatically out of the spooling position into a discharge position, thereby causing with its motion, the release of the empty bobbin from its ready-to-use position, which subsequently falls by itself into the spooling position. Therefore neither a separate actuation element, which brings the empty bobbin to its spooling position, nor a sensor which detects the disengagement of the spooling location and then releases the empty bobbin is required.
The rolling guide rails and the fall guide rails can have common tiltable rail pieces, which under the action of a spring are pressed into the trajectory of the fall guide rails and by the weight of a full bobbin rolling away on the rolling guide rails can be pressed into the trajectory of the fall guide rails.
A two-winged flap 19 can be provided, by means of which a full bobbin rolling away on the rolling guide rails can be
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Feiler Horst
Rippstein Klaus
Dubno Herbert
Walsh Donald P.
Webb Collin A.
Zinser Textilmaschinen GmbH
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