Textiles: weaving – Weft manipulation – Weaving with stationary weft supply
Patent
1989-06-01
1990-11-06
Falik, Andrew M.
Textiles: weaving
Weft manipulation
Weaving with stationary weft supply
1394352, 139452, D03D 4730
Patent
active
049678060
ABSTRACT:
A weft picking control system for accomplishing weft picking in a high response throughout a wide region of operating conditions of an air jet loom. The loom has a weft inserting nozzle which projects a weft yarn under the influence of air ejection therefrom. The weft picking control system has a first device for detecting a weft reaching timing at which the weft yarn projected from the weft inserting nozzle reaches a counter-weft picking side. A second device is provided to control an effective air ejection time for weft picking depending upon the air ejection of the weft inserting nozzle, in accordance with the detected weft reaching timing. The effective air ejection time is defined by at least one of a pawl disengagement timing (at which a weft retaining pawl is disengaged from a drum of a weft measuring and storing unit) and an air ejection termination timing (at which air ejection from the weft inserting nozzle is terminated). A third device is provided to compare at least one of the pawl disengagement timing and the air ejection termination timing with predetermined upper and lower limit values. Additionally, a fourth device is provided to change air pressure (under which the air ejection from the weft inserting nozzle is made) to be fed to the weft inserting nozzle when at least one of the pawl disengagement timing and the air ejection termination timing exceeds the predetermined upper and lower limit values.
REFERENCES:
patent: 4378821 (1983-04-01), Umezawa
patent: 4550753 (1985-11-01), Tsuji
patent: 4646791 (1987-03-01), Tsuji et al.
patent: 4658865 (1987-04-01), Gotoh
patent: 4673004 (1987-06-01), Rosseel et al.
patent: 4766937 (1988-08-01), Kojima et al.
patent: 4827990 (1989-05-01), Takegawa
Imamura Shuichiro
Wakai Shinji
Falik Andrew M.
Nissan Motor Co,. Ltd.
LandOfFree
Automatic weft picking control system for fluid jet loom does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Automatic weft picking control system for fluid jet loom, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Automatic weft picking control system for fluid jet loom will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1301631