Pulsating glue head for folding machines

Details Pulsating glue head for folding machines Pulsating glue head for folding machines

1976-08-18

1978-08-08

McIntosh, John P.

Coating apparatus

With vacuum or fluid pressure chamber

118 32, 118411, 156357, 156443, 156578, B05C 502

Patent

active

041049837

ABSTRACT:
Apparatus for automatically spot gluing printed sheets on a folding machine. The apparatus comprises an applicator head, an internally defined cylinder interconnected with a source of fluid pressure, and a reciprocally displaceable piston disposed within the cylinder for selectively engaging to be glued. The piston includes a glue output orifice adapted to contact a printed sheet to be folded and glued in a folded condition. The orifice is in fluid flow communication with a glue input source. In a single action embodiment the apparatus includes a return spring for resetting the piston after each spot gluing operation, and in an alternative double action embodiment fluid pressure is utilized to automatically reset the piston at a preselected instant.
The spot gluer is located immediately in front of a stop bar which serves to stop moving sheets and buckle them between folding rollers.

REFERENCES:
patent: 2670102 (1954-02-01), Mangano
patent: 3420208 (1969-01-01), Guthrie
patent: 3429482 (1969-02-01), Nord et al.
patent: 3661679 (1972-05-01), Law
patent: 3747917 (1973-07-01), Roda
patent: 3947175 (1976-03-01), Melcher

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