Textiles: manufacturing – Warp preparing or handling – With means responsive to sensed condition
Patent
1987-03-30
1989-04-11
Mackey, Robert R.
Textiles: manufacturing
Warp preparing or handling
With means responsive to sensed condition
28191, 364470, D02H 1324
Patent
active
048193100
ABSTRACT:
During warping, the threads removed from the bobbins of a warp creel are supplied by means of a respective adjustable and settable thread brake to a reed located on the warping carriage of the warping machine and from that location the threads are ordered or arranged in a warp section prior to winding onto the warping drum. During operation of the warping machine, all of the thread brakes can be simultaneously adjusted by a central brake adjusting device controlled by control signals of a processor which, prior to the start of warping, stores by means of an input station, the warp section tension to be kept constant during operation, apart from other data. In the processor, the set or reference value of the warp section is constantly compared with actual value signals fed into the processor by a tension measuring device. If there exists a set value-actual value difference, the central brake adjusting device is controlled in the sense of correcting the thread tension by means of the thread brakes. The tension measuring device comprises a measuring roller which deflects the complete warp section between the reed and the warping drum and whose exposure to the warp section tension produces the actual value signal by means of displacement path transducers or pick-ups and this actual value signal is compared with the previously entered set or reference value in the processor.
REFERENCES:
patent: 3481011 (1969-12-01), Norton
patent: 3777959 (1973-12-01), Seney
patent: 4074404 (1978-12-01), Schenk
patent: 4141120 (1979-02-01), Schenk
patent: 4528631 (1985-07-01), Bogucki-Land
0012235, 06/1980, European Patent, Theihsen et al.
Beerli Markus
Guntli Erich
Benninger AG
Kleeman Werner S.
Mackey Robert R.
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