Mitsubishi Heavy Industries Printing & Packaging Machinery, Ltd.

Hironari Yamada

Osamu Hatano

A blade mount is attached or detached without bolts to save the time for the attaching and the detaching. Consequently, the operation efficiency of the rotary die cutter is enhanced, which is intended to achieve. Two fixing rings are freely fitted to a knife cylinder and the driving unit rotates the screw axis to move moving mounts. Thereby, yoke plates disposed on the moving mounts move the fixing rings to the end portion of a blade mount, and then an activated unit activates fixing units to fix the fixing rings to the outer circumference face of the knife cylinder, so that the blade mount is fixed. After the fixing rings are fixed, the yoke plates are separated from the fixing rings, so that abrasion of the yoke plates can be avoided.

Blade mount of rotary die cutter, and method and device for fixing blade mount

It is intended to improve work efficiency by eliminating the work of attaching and removing push rods during installing and dismounting the a blade mount and also to reduce abrasion of the push rods for pushing punching scrap out of a punching blade. The first push rodsare inserted movably in the first through-holesformed in the knife cylinder and the second push rodsare inserted movably in the second through-holesformed in the blade mount to permit the second push rodsto be abutted on the first push rods. A scrap push leveris mounted on the outer end of the second push rodto push out the punching scrap a and an eccentric cylinderis provided inside of the knife cylinderto push the first push rodoutward when pushing out the punching scrap a. The stroke of the first push rodis controlled so that the outer endof the first push roddoes not project from the outer peripheryof the knife cylinder. The first push rodand the second push rodare preferably made from one of self-lubricating resin and abrasion-resistant material.

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Mihara, Japan

Hironari Yamada