Apparatus for manufacturing products of welded plastic sheets

Adhesive bonding and miscellaneous chemical manufacture – Surface bonding means and/or assembly means therefor – With gas – vapor – or flame contact means for work

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Details

100 93P, 100222, 100269A, 100270, 156498, 156510, 156553, 1565831, 1565835, B30B 1530, B30B 1534

Patent

active

047691069

ABSTRACT:
A machine for manufacture of products formed by welding of plastic film sheets is disclosed comprising a welding station, a cutting station, and a conveying apparatus which serves to guide the plastic sheets through the stations. The conveying apparatus consists of a moving carriage with grasping devices for grasping the plastic sheets. The carriage comprises a cam slot extending perpendicular to its direction of motion. A driven cam follower engaged in the cam slot drives the carriage from a first position, in which the grasping devices grasp the sheets, into a second position at the end of the feed carriage travel, at which the sheets are released. A conveyor belt supports the film sheets between the various stations. A lift mechanism activates the welding press during the reverse motion of the carriage; it is driven by the drive shaft driving the crank arm. The speed of the motor driving the drive shaft may be varied during each machine cycle to optimize its operation.

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patent: 3200686 (1965-08-01), Norton et al.
patent: 3701709 (1972-10-01), Bianchini
patent: 3770581 (1973-11-01), Orbison et al.
patent: 3933569 (1976-01-01), Grasvoll
patent: 4012275 (1977-03-01), Sjoholm et al.
patent: 4080241 (1978-03-01), Grevich et al.
patent: 4362593 (1982-12-01), Grevich
patent: 4460431 (1984-07-01), Keller et al.

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