Pulsating glue head for folding machines

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

B - Operations, Transporting

67

D

32/1

B67D 7/08 (2010.01)

Patent

CA 1097496

PULSATING GLUE HEAD FOR FOLDING MACHINES ABSTRACT OF THE DISCLOSURE 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 a sheet to be glued. The piston includes a glue output orifice adapted to contact a printed sheet to be folded and glued in a folded con- dition. 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 em- bodiment 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 be- tween folding rollers.

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