Textiles: spinning – twisting – and twining – Apparatus and processes – Doffing or donning
Patent
1986-12-30
1988-04-05
Petrakes, John
Textiles: spinning, twisting, and twining
Apparatus and processes
Doffing or donning
19159A, 57 90, 57276, 57281, D01H 918
Patent
active
047350407
DESCRIPTION:
BRIEF SUMMARY
CROSS REFERENCE TO RELATED APPLICATIONS
This application is a national phase application corresponding to PCT/CH86/0030 filed Mar. 6, 1986 and based, in turn, on Swiss application No. 01829/85-2 filed Apr. 30, 1985
FIELD OF THE INVENTION
The invention relates to method of and an apparatus for the automatic feeding of full cans and the automatic removed of empty cans from the spinning units of a spinning machine.
More particularly, the invention relates to an apparatus having a supply station which is connected with the spinning units along a spinning machine via a floor-conveyor installation with at least one independently moving floor-conveyor truck. The floor-conveyor truck comprises a plurality of arms extendable transversely to the direction of movement and including a first arm arranged to receive and deliver a full can and a second arm constructed to receive and deliver an empty can. The spinning units are equipped with transmitters for transmitting orders to the conveyor truck and the conveyor truck has a first control unit for an automatic control of its displacement and a second control unit for the automatic receiving and delivery of the cans.
BACKGROUND OF THE INVENTION
In spinning mills, it is usual to lay out several large spinning machines parallel to each other, whereby the individual spinning machines have a plurality of spinning units, for instance 20 to 200 units, on each side receiving the fiber strands to be spinned from cans which are arranged standing on the bottom, underneath the spinning units. As a rule, two cans are provided for each spinning unit, whereby from one of the cans the fiber strand is taken up for spinning, and the other can is either a full spare can or an already empty one. As a rule, the fiber strand is taken up from the can which stands in the front, in the first row. As soon as this is empty, it is replaced by the full can standing in the second row. The supply, exchange and monitoring of the cans at the spinning units are relatively time-consuming and cumbersome.
From the German open application DE OS No. 26 46 313 and installation of the afore-described kind is known which makes possible the automatic exchange of cans at the spinning units of a spinning machine. The conveying installation used is an overhead conveyor whose tracks are arranged at the spinning machine. The conveyor truck comprises two arms, of which one arm serves for the receiving of an empty can from the spinning unit and its evacuation, while the other arm serves for the feeding and delivery of full cans to the spinning unit. In order to be able to manipulate the cans arranged one after the other in rows at a spinning unit, three or four cans of neighboring spinning units are arranged on a turn table, which is actuatable from the devices of the conveyor truck. This apparatus has the disadvantage that all spinning units have to be equipped with such complicated turntables, whereby it becomes expensive and complicated to operate, especially since the mounting of such a conveying installation at already existing spinning machines is not possible for many reasons, and in any case would be complicated and expensive.
OBJECT OF THE INVENTION
It is the object of the invention to provide an apparatus of the type described, which is especially simple and necessitates little intervention at the spinning machine as possible, so that it can also be mounted on spinning machines which are already in use.
SUMMARY OF THE INVENTION
This object is attained, in accordance with the invention in that the floor-conveyor truck has a third arm extendable transversely to the direction of movement, which preferably is mounted between the first and the second arms and serves to grip for a limited time a can in use at the spinning units making it possible to pick up an empty can positioned behind this gripped can. Due to the additional or third arm for the time-limited engagement of a can in use at the spinning unit, the cans can be manipulated at the spinning unit without complicated turntables. As a result,
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Buro Patent AG
Dubno Herbert
Petrakes John
Ross Karl F.
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