Patent ID: 6224530
Filing Date: 2001-05-01
Classification: B65H

Abstract:
A buckle folding mechanism with two or three folding pockets, comprising a plurality of folding rollers mounted in a folding mechanism block detachable from a machine frame, and a drive arranged outside the folding mechanism block, wherein the folding mechanism block comprises a sheet input on one of its sides and a sheet output on its opposite side and wherein the sheets are fed to the folding mechanism block via transport devices along an input plane in a paper feed direction and are transported away along an outlet plane in the same direction, wherein the inlet plane and the outlet plane of the transport devices are arranged substantially in a common plane, the folding rollers and folding pockets are so arranged in the folding mechanism block that the sheet inlet and the sheet outlet also lie in a region of the common plane in the existing installed position of the folding mechanism block in the machine frame, wherein all folding rollers are drivably coupled together in the folding mechanism block by coupling gearwheels arranged on one end of each of the folding rollers, the drive is arranged in the machine frame and comprises a driving gearwheel which is mounted in the region of the folding mechanism block in the machine frame and meshes with one of the coupling gearwheels in a first installed position of the folding mechanism block, and one of the folding rollers carries on its other end a driven gearwheel which meshes with the driving gearwheel in a second installed position of the folding mechanism block, at which the folding mechanism block is fitted in the machine frame rotated relative to its first installed position through 180.degree. about a conceptual axis running parallel to the paper feed direction.