Screen printing machines

Details Screen printing machines Screen printing machines

1997-09-29

1999-03-30

Eickholt, Eugene

Printing

Stenciling

Multicolor

101123, 101126, 152565, B41F 1504

Patent

active

058875190

ABSTRACT:
A screen printing machine has a drive mechanism for moving printing platens along an endless horizontal path through successive printing stations and a printing screen carried by a printing head above the endless path at each printing station. A platen alignment mechanism at each printing station has locating members movable vertically into and out of engagement with freely rotatable rollers on the platen supports. A screen positioning mechanism at each printing station has screen holders engageable with opposite sides of screens, and the screen holders each comprise a screen support mounted for pivotation to and fro between a position beneath one of the screens. A lifting system at each printing station has supports positioned to support opposite ends of one of the printing heads and a support drive mechanism operable to simultaneously raise the supports. A squeegee support bar is provided which has a recess extending longitudinally of the bar at an underside thereof, and an elongate retainer extending longitudinally of the bar and having a projecting portion. The elongate retainer is movable between an operative position, in which the projecting portion releasibly engages and retains a squeegee relative to the squeegee support bar, and a released position, in which the projecting portion releases the squeegee from the bar.

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