Lock-out device for threading in a strip guide apparatus

Details Lock-out device for threading in a strip guide apparatus Lock-out device for threading in a strip guide apparatus

1995-02-14

1996-06-11

Stodola, Daniel P.

Advancing material of indeterminate length

With material-responsive control means

To position material laterally

226199, B65H 2000

Patent

active

055248047

ABSTRACT:
A lock-out device for an apparatus which guides strips of material toward a tire-building drum and which maintains the strip centered by compensating for minor variations in strip width. A pair of guide rails are adjustably mounted on a support housing and contain strip-engaging rollers which form a guide path for the strip moving therebetween. A panograph linkage is mounted on the housing and connects the guide rails for simultaneous movement of the rails toward and away from each other. A biasing mechanism, such as a spring or weight, biases the rails toward each other and the rollers into guiding engagement with the edges of the strip, and enables the guide rails to automatically move inward or outward to compensate for variations in strip width. The lock-out device includes a pressure-actuated piston which engages one of the guide rails, and when actuated, moves both rails apart and out of engagement with the longitudinal edges of the strip until the leading edge of the strip has been aligned and wrapped partially on the drum, and an angled front edge of the strip has moved beyond the guide rollers. The piston then is retracted and the biasing mechanism is operatively engaged with the guide rails to maintain the strip centered as it moves between the rails and around the tire-building drum.

REFERENCES:
patent: 1711074 (1929-04-01), Winkle
patent: 2947057 (1960-08-01), Meagher, Jr. et al.
patent: 3170829 (1965-02-01), Batten
patent: 3269627 (1966-08-01), O'Brien
patent: 3896983 (1975-07-01), Weinguni
patent: 3974953 (1976-08-01), Klose
patent: 4049486 (1977-09-01), Henley
patent: 4750660 (1988-06-01), Kamimura
patent: 4961813 (1990-10-01), Bailey

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