Shedding control method an apparatus in a weaving machine

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EP 1 065 306 A3

(12)	EUROPEAN PATENT APPLICATION

(88)	Date of publication A3:
	20.06.2001 Bulletin 2001/25

(43)	Date of publication A2:
	03.01.2001 Bulletin 2001/01

(21)	Application number: 00105970.8

(22)	Date of filing: 24.03.2000

(51)	International Patent Classification (IPC)⁷: D03D 51/02, D03C 1/16

(84)	Designated Contracting States:
	AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
	Designated Extension States:
	AL LT LV MK RO SI

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Priority:

15.04.1999 JP 10771299

(71)	Applicant: KABUSHIKI KAISHA TOYODA JIDOSHOKKI SEISAKUSHO
	Kariya-shi, Aichi-ken (JP)

(72)	Inventors:
	Sugiyama, Hiromasa,c/o Kabushiki Kaisha Toyoda Kariya-shi, Aichi-ken (JP) Toda, Motoaki,c/o Kabushiki Kaisha Toyoda Kariya-shi, Aichi-ken (JP) Hara, Shigeru,c/o Kabushiki Kaisha Toyoda Kariya-shi, Aichi-ken (JP) Tsuji, Yukihiro,c/o Kabushiki Kaisha Toyoda Kariya-shi, Aichi-ken (JP) Abe, Hironobu,c/o Kabushiki Kaisha Toyoda Kariya-shi, Aichi-ken (JP)

(74)	Representative: HOFFMANN - EITLE
	Patent- und Rechtsanwälte Arabellastrasse 4 81925 München 81925 München (DE)

(54)	Shedding control method an apparatus in a weaving machine

(57) A control circuit 34 retrieves a shedding pattern for each of heddle frames 151, 152, 153 and 154 from a weave information memory device 27 for every single rotation of a weaving machine. The control circuit 34 selects a shedding curve for each of the heddle frames 151, 152, 153 and 154 from a shedding curve memory circuit 33 on the basis of the thus retrieved information. A control circuit 34 outputs control command to a drive circuit 35 so as to form the shedding curves thus selected. The drive circuit 35 oeprates shedding drive motors M1, M2, M3 and M4 so that the heddle frames 151, 152, 153 and 154 establish respective shedding curves selected correspondingly.

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