Textiles: weaving – Miscellaneous – Loom cleaning
Patent
1996-09-11
1998-07-07
Falik, Andy
Textiles: weaving
Miscellaneous
Loom cleaning
28201, 28208, 28209, 156158, D03J 100, D03J 102
Patent
active
057753806
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
The subject of the invention is a method for passing new warp threads through a warp stop motion device and/or a shedding device and/or a weaving reed of a power weaving loom whereby old warp threads are attached to the new warp threads of a new warp beam and are taken up by means of a winding device in which the attached warp threads are wound onto the winding element until the area in which the old warp threads and the new warp threads are attached is located in the area of the winding element, and also an apparatus for carrying out the method.
It is customary to attach the new warp threads of a new warp beam to the old warp threads which run through drop wires of a warp stop motion device and/or the heddle of shafts and/or the weaving reed. For example, the threads can be attached by means of knots or splicing. U.S. Pat. No. 4,768,564 discloses a method in which the attached warp threads are pulled through the warp stop motion device and/or the shafts and/or the weaving reed by means of a fabric take-up device until the attachment points have passed the weaving reed. At this point the weaving process can continue. Such a method is disadvantageous in that the power weaving loom is idle and does not weave while the threads are attached and pulled through. In addition, the new warp threads are attached and pulled through directly on the power weaving loom under unfavorable working conditions such as poor lighting, climate and ambient noise.
It is also customary (EP 0 557 745 A1) for a part of a power weaving loom to be removed, which part contains the warp beam, the warp stop motion device and/or the shedding devices. When a warp beam in such a machine is used up and must be replaced with a new warp beam, the part can be removed from the power weaving loom and can be moved to a different location. Here the warp threads of the new warp beam can be tied or spliced to the warp threads of the used warp beam and drawn in under ideal conditions.
It is also customary (WO 93/19233) to bond a plastic foil to the beginnings of a new warp thread assemblage so that these warp threads can easily be introduced into the power weaving loom, especially into the fabric take-up roller of the power weaving loom.
OBJECTS AND SUMMARY OF THE INVENTION
The object of the invention is to enable the new warp threads which are pulled through a warp stop motion device and/or a shedding device and/or a weaving reed to be prepared in a manner which makes it possible to pull them further into the power weaving loom in a simple manner.
The object of the invention is attained in that the winding device, after the warp threads are taken up, is moved with the warp threads from a take-up position into a receiving position in which the warp threads are received.
By moving the winding element from a take-up position into a take-over position the new warp threads can be taken over effectively so that the subsequent processing and the further introduction of the warp thread assemblage into the power weaving loom is simplified.
In a beneficial embodiment of the invention the winding element rotates in the direction of the uncoiling process while it is moved from the winding position to the take-over position. This makes the transition easy.
In another embodiment of the invention the winding element is rolled on guide devices to the take-over device whereby the direction of rotation of the rolling motion corresponds to the direction of rotation of the uncoiling movement. This means that it is easy to operate the winding element which can also be carried out manually.
Taking the invention one step further the winding element is moved to a bonding device and the warp threads are bonded to a foil.
In a preferred method the old warp threads are separated in the area of the woven material and then the used up warp beam together with the warp stop motion device and/or the shedding device and/or the weaving reed is moved from a power weaving loom. Then, the old warp threads are taken up by a winding element, are separated f
REFERENCES:
patent: 2585708 (1952-02-01), Welch
patent: 4768564 (1988-09-01), Yamada
patent: 4934413 (1990-06-01), Yao
patent: 5316048 (1994-05-01), Gruwez
patent: 5371930 (1994-12-01), Lindenmueller et al.
patent: 5430916 (1995-07-01), Plaschy et al.
patent: 5514234 (1996-05-01), Plaschy et al.
Roelstraete Kristof
Shaw Henry
Falik Andy
Santrade Ltd.
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