Apparatus for applying transverse weld seams to an intermittentl

Details Apparatus for applying transverse weld seams to an intermittentl Apparatus for applying transverse weld seams to an intermittentl

1985-11-08

1987-09-22

Czaja, Donald E.

Adhesive bonding and miscellaneous chemical manufacture

Surface bonding means and/or assembly means therefor

Automatic and/or material-triggered control

156251, 156515, 156538, B32B 3120

Patent

active

046953469

ABSTRACT:
An apparatus for applying transverse welds on a plastic foil web in dependence on the print register is provided with a conveyor which is advanced by means of a control unit intermittently and synchronously with respect to a welding unit. The control unit includes a drive disk whose eccentric pin is adjustable and guided by an eccentric block. Via a coupling rod, the drive disk is connected to a rocker which is accommodated in a gear segment and whose oscillation is adjustable by a spindle. The gear segment cooperates with the conveyor via a clutch-brake unit which provides the intermittent advance of the conveyor by uncoupling from or connecting the latter with the gear segment and is controlled by a plurality of contactless switch elements. For precise adjustment of the advance of the conveyor, the spindle cooperates with a motor which operates in dependence on the print register as monitored by a photocell. To allow a rough adjustment in the event of print registers of different kind, the eccentric pin on the drive disk is adjustable.

REFERENCES:
patent: 3650449 (1972-03-01), Mundus
patent: 4011978 (1977-03-01), Lehmacher
patent: 4217163 (1980-08-01), Utzmann
patent: 4371413 (1983-02-01), Mundus

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