A let-off control device for a weaving machine

(19)

(11)

EP 1 091 032 A3

(12)	EUROPEAN PATENT APPLICATION

(88)	Date of publication A3:
	01.10.2003 Bulletin 2003/40

(43)	Date of publication A2:
	11.04.2001 Bulletin 2001/15

(21)	Application number: 00120680.4

(22)	Date of filing: 21.09.2000

(51)	International Patent Classification (IPC)⁷: D03D 49/06

(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

(30)

Priority:

07.10.1999 JP 28743299

(71)	Applicant: TSUDAKOMA KOGYO KABUSHIKI KAISHA
	Kanazawa-shi, Ishikawa-ken 921-8650 (JP)

(72)	Inventor:
	Sainen, Tsutomu, Tsudakoma Kogyo Kabushiki Kaisha Kanazawa-shi, Ishikawa-ken 921-8650 (JP)

(74)	Representative: Müller-Boré & Partner Patentanwälte
	Grafinger Strasse 2 81671 München 81671 München (DE)

(54)	A let-off control device for a weaving machine

(57) A let-off control device for a weaving machine comprises a basic speed calculator (11), an average tension calculator (18), controller (14) and a control amplifier (17) to drive a let-off motor (M). The controller (14) operates in synchronism with an operating cycle determined by a clock signal (Sc), independently of operating cycle of the average tension calculator (18), with no likelihood that substantial control parameters will fluctuate due to variations in the operation speed of the weaving machine.

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