Textiles: weaving – Miscellaneous – Loom cleaning
Patent
1995-11-09
1998-10-27
Falik, Andy
Textiles: weaving
Miscellaneous
Loom cleaning
444401, 444911, 28208, 2425338, D03J 100, D02H 1338
Patent
active
058266240
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
The invention relates to a process and a device for parallel aligning a transporting carriage for loom or cloth beams. The transporting carriage can be positioned in front of a weaving machine, and the undercarriage of the transporting carriage has two wheels which are arranged at a longitudinal distance from one another, can be steered, and, if necessary, can be driven by a motor.
BACKGROUND OF THE INVENTION
Loom beam transporting carriages of this type are mainly utilized for the loom beam exchange on weaving machines. The full loom beam must for this purpose be picked up from the ground or a storage frame, must be transported to the weaving machine, must be positioned in front of the weaving machine, and must be suspended on a loom-beam support on the machine frame. The operator usually aligns the transporting carriage by sight and through repeated transverse and longitudinal movement of the undercarriage until the carriage is parallel with the weaving machine. This operation is complicated and depending on the skill of the operator rather time-consuming. In the case of incorrect positioning, collisions occur repeatedly in the storage area of the weaving machine, in the bearing arms, and in the area of the projecting tube ends of the loom beams, thus causing unnecessary wear or damage.
Loom-beam transporting carriages of this type are mainly utilized for the cloth-beam exchange on weaving machines. A cloth-beam transporting carriage has the task to lift a full cloth beam out of a weaving machine, to cut the cloth strand, to wind the free end of the cloth strand onto an empty cloth beam, and to insert the empty cloth beam with the cloth strand to be wound thereon into the weaving machine. The loom-beam transporting carriage is for the loom-beam exchange task positioned in the cloth path in front of the respective weaving machine. The positioning in longitudinal direction can be very exact, but the parallel alignment positioning with respect to the weaving machine is difficult. If the carriage and weaving machine are not parallel, then the danger exists that an undesired crease formation occurs during winding and subsequent insertion of the new loom beam. In order to prevent this, the loom-beam transporting carriage must be aligned parallel with respect to the weaving machine.
SUMMARY OF THE INVENTION
The basic purpose of the invention is to provide a process and a device to effect a parallel alignment of the transporting carriage and the weaving machine.
This purpose is attained according to the invention by the following process steps: to the weaving machine in a longitudinal direction and is aligned with at least one of its steerable wheels in a transverse travelling direction with respect to the weaving machine; reference surfaces are thereafter measured without contact while forming distance signals from two undercarriage-fixed positions which are arranged at a longitudinal distance from one another, and the distance signals are converted into a driving and/or steering movement of the wheels for paralleling the transporting carriage.
The two wheels are driven by a motor and are aligned in a transverse travelling direction. The wheels are oppositely driven in accordance with the distance signals or in accordance with a difference signal formed out of the distance signals until the transporting carriage is parallel aligned. With a sufficient lateral guiding of the undercarriage, it is possible to thereafter move the transporting carriage without any further measuring operation in transverse travelling direction toward the weaving machine.
As an alternative, it is possible to individually stop or to drive the two wheels, which are driven by a motor and are aligned in transverse travelling direction, in the same direction with different speeds in accordance with the distance signals or a difference signal formed out of the distance signals to parallel the transporting carriage to the weaving machine. During the transverse travel of the transporting carriage toward the weavin
REFERENCES:
patent: 4843373 (1989-06-01), Trickle et al.
patent: 5042533 (1991-08-01), Kuwahara et al.
patent: 5261463 (1993-11-01), Sato
Falik Andy
Genkinger Hebe- und Foerderchnik GmbH
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