Winding – tensioning – or guiding – Coil holder or support – Mounted coil holder or spindle
Reexamination Certificate
1999-06-25
2001-08-21
Nguyen, John Q. (Department: 3653)
Winding, tensioning, or guiding
Coil holder or support
Mounted coil holder or spindle
C242S533200, C066S151000
Reexamination Certificate
active
06276630
ABSTRACT:
BACKGROUND OF THE INVENTION
The invention relates to a device for winding webs of fabric into a lap, arranged on a lap rod, with a machine frame, a lap carrier which can move to and fro with respect to the machine frame between a winding position and an unloading position and is provided with receiving means for the two ends of the lap rod, which have positioning guides which position the lap rod in the winding position of the lap carrier in a winding rotational position, and with securing elements which secure the lap rod, in the winding position of the lap carrier, against any movement out of the positioning guides.
Such a device is known from German Patent 41 07 690. In the patent, the securing element is designed as a wedge-shaped latching element arranged permanently on the machine frame.
Such a wedge-shaped latching element arranged permanently on the machine frame needs to be adjusted exactly if it is intended to be fully effective, so that achieving perfect security requires a considerable amount of effort to adjust every single device.
In addition, the know device is provided with a closing device which, in the event of operator errors, does not reliably hold the lap carrier in the winding position, with the result that the lap carrier can move independently towards the unloading position and the securing element therefore also becomes ineffective.
The invention is therefore based on the object of improving a device of this generic type such that the lap carrier is reliably secured in the winding position.
SUMMARY OF THE INVENTION
The invention achieves this object in a device of the type described in the introduction in that the securing elements are designed as movable blocking elements which can be moved between a position which secures the lap rod and a position which releases the lap rod, and in that, when the lap carrier is in the winding position, the blocking elements are in the position which secures the lap rod and are fixed in this position.
The advantage of the solution according to the invention can thus been seen in that the securing elements designed as movable blocking elements eliminate the problem of needing to adjust the securing element exactly, because, on account of the mobility provided, the blocking elements are in a position, on the one hand, to secure the lap rod reliably in the position which secures it, and on the other hand, in the position which releases it, to permit the lap rod to move out of the winding position.
The further advantage of the solution according to the invention can be seen in that the movable blocking elements can be fixed by the lap carrier situated in the winding position, so that the movable blocking elements can thus secure the lap rod as desired.
In principle, it is possible to implement fixing of the movable blocking elements by the lap carrier situated in the winding position in different ways. For example, it would be conceivable to allow the lap carrier to act on the movable blocking elements directly or by means of an intermediate element in order to fix them.
However, a particularly expedient solution, in design terms, provides that, in the winding position, the movable blocking elements are fixed in the position which secures the lap rod by the receiving means acting on the said blocking elements. The advantage of this solution lies in the simplicity of its design and also in the fact that the movable blocking elements have in any case to be arranged near to the receiving means in order to fix the lap rod in the winding position, so that, to fix movable blocking elements, use is expediently made of the receiving means which are situated near to them in any case.
In order for it to be a simple matter to allow the movable blocking elements to pass into the position which releases the lap rod, the invention preferably provides that the blocking elements release the lap rod while the lap carrier is moving from the winding position into the unloading position, the movement of the lap carrier, in particular, towards the unloading position also causing the receiving means to release the movable blocking elements fixed in the winding position.
The positioning guides for the lap rod, contained by the receiving means, can be of different design in principle. One particularly advantageous solution provides that the positioning guides are designed such that the ends of the lap rod are positioned in the winding rotational position on account of the gravitational force acting on the lap in the winding position. A particularly simple and cost-effective embodiment of such positioning guides provides that they have guide faces for the lap rod which are arranged in a U- or V- or semicircular shape with respect to one another.
As regards the action of the blocking elements specifically, no further details have hitherto been given. Hence, one advantageous exemplary embodiment provides that the movable blocking elements secure the lap rod against moving out of the receiving means, that is to say that the receiving means are designed such that the lap rod can move out of them, whether as a result of a movement along a rising slope or of lifting out, and that all these movements are prevented by the blocking elements.
In this context, it is particularly expedient if the blocking elements secure the lap rod against moving out of the positioning guides of the receiving means. This means that the blocking elements not only prevent the lap rod from leaving the receiving means taken as a whole, but that the blocking elements even prevent movement out of the positioning guides of the receiving means, that is to say movement into other sections of the receiving means which are not covered by the positioning guides. This ensures that the positioning guides always position the lap rod in the winding position exactly, and also that the lap rod does not leave the exact position predetermined by the positioning guides.
With the solution according to the invention, it is in principle conceivable for the lap carrier to move from the winding position into the unloading position in any desired manner. For example, it would be conceivable to have a translational movement, or alternatively a translational movement combined with a rotational movement. A particularly simple and expedient solution provides that the lap carrier can pivot about a pivot axis, and in that the lap rod held in the receiving means can move along a circular path between the winding position and the unloading positioning. The simplicity of design and also the simple operability of this solution mean that is has considerable advantages over the other solutions mentioned above.
In the context of the explanation of the previous exemplary embodiments of the solution according to the invention, the receiving means have not been defined in any more detail; they were merely defined as having positioning guides for the lap rod. In order, in particular, to fix a defined movement for the lap arranged on the lap rod during unloading, and particularly to ensure that the lap does not fall out of the lap carrier in an uncontrolled manner, the invention preferably provides that the receiving means have guide paths which adjoin the positioning guides in an unloading direction and along which the lap rod can move when changing from the winding position into the unloading position. The solution has the advantage that the guide paths may be designed such that the lap rod moves, together with the lap arranged on it, in a controlled fashion along the guide paths and can thus also be transferred into a transport device in a controlled fashion, for example.
It would, in principle, be conceivable to design these receiving means such that moving the lap rod along the guide paths requires the action of the additional force on the lap or the lap rod. A particularly advantageous solution provides that the lap rod follows the guide paths in a direction leading ways from the positioning guides on account of the gravitational force acting on the said lap carrier when the lap carrier changes from the windin
Engelfried Werner
Mueller Armin
Lipsitz Barry R.
Nguyen John Q.
Terrot Strickmaschinen GmbH
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