Typesetting pull-up mechanism of a lithographic printing machine

Abstract

The invention discloses a typesetting pull-up mechanism of an offset press. Two typesetting pull-up mechanisms are respectively symmetrically mounted on the transmission side and the operation side of the offset press. The typesetting pull-up mechanism comprises an up-down action mechanism, a clamping mechanism, movable and static plate clamping rollers and a releasing mechanism. The clamping mechanism and the movable and static plate clamping rollers are mounted on the up-down action mechanism. The releasing mechanism is fixed below the up-down action mechanism. When the clamping mechanism moves downwardly along with the up-down action mechanism and touches the releasing mechanism, the movable and static plate clamping rollers are separated. When the clamping mechanism moves upwardly along with the up-down action mechanism and leaves the releasing mechanism, the movable and static plate clamping rollers are tangential. By the typesetting pull-up mechanism, automatic typesetting can be achieved, plate switching time during printing can be saved, and work efficiency can be increased.

Description

technical field [0001] The invention relates to a typesetting pull-up mechanism of a planographic printing machine. Background technique [0002] Lithographic printing machine needs to take out the old printing plate after printing from the printing plate cylinder of the printing machine before a new printing task starts after the end of a printing task. At present, most of the printing fields still use manual plate taking. The process of manually taking the plate is generally to loosen the tension shaft of the plate clamp first, then loosen the side plate clamp slightly, take out the side edge of the plate from the plate clamp, and then turn the plate cylinder to the bite of the plate clamp. On the mouth side, loosen the bite side of the printing plate to complete the removal of the old printing plate. The method of taking out the old printing plate like this is generally inefficient. If one person operates, each color group needs to take the printing plate once, and the ...

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