SQUEEGEE AND FLOOD BAR ACTUATOR WITH PEELING SCREEN CLAMP

摘要

The squeegee and flood bar assemblies of a screen printing machine are reciprocally moved along a spaced pair of parallel rails to alternately effect a printing stroke and a flood stroke. The rails are part of a frame which is pivoted for tilting movement between a printing position and a flood position. The squeegee assembly is slideably engaged in a third rail or control rail which is raised and lowered in coordination with the movement of the frame to lower the squeegee into contact with the printing screen at the start of the printing stroke and to raise it above the screen at the start of the flood stroke. The flood bar assembly is linked to the squeegee assembly to raise the flood bar when the squeegee is lowered and to lower the flood bar when the squeegee is raised. The front end of the printing screen is held in a clamp which is suspended below the parallel rails and includes a rod rotatably attached to the frame along an axis which is transverse to the rails, a pair of spaced lever arms projecting from the rod, and a linear clamp member suspended from the lever arms. The rear end of the screen is suspended from the frame by turnbuckles which allow the position of the screen to be manually adjusted.