AUTOMATIC WEB-JOINING SYSTEM

Title:

AUTOMATIC WEB-JOINING SYSTEM

Document Type and Number:

WIPO Patent Application WO/1991/016255

Kind Code:

A1

Abstract:

At the start of web joining, braking power is strengthened to thereby reduce the speed of an old shaft, and, at this time, a pay-out roll is brought into a freely running condition. A second motor is instructed to run at a speed equal to a value of correction for tension plus (a line speed - a pay-out speed), and an accumulator roll unit starts moving simultaneously with the speed reduction of the old shaft. At the time of start of a new shaft, the pay-out roll is accelerated to (the line speed + a catching-up speed) at a constant rate. When the accumulator roll unit reaches a synchronizing position, a catching-up speed is reduced to zero to thereby synchronize with the line speed.

Inventors:

TOKUNO MASATERU (JP)
ITO MASAAKI (JP)

Application Number:

PCT/JP1991/000479

Publication Date:

October 31, 1991

Filing Date:

April 12, 1991

Export Citation:

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Assignee:

SK ENG CO LTD (JP)
RELIANCE ELECTRIC LTD (JP)

International Classes:

B65H19/16; B65H19/18; B65H19/24; B65H20/34; B65H23/188; (IPC1-7): B65H19/18

Foreign References:

JPS5385266A	1978-07-27
JPS62205954A	1987-09-10
JPH0286537A	1990-03-27
JPS60144267A	1985-07-30

Other References: