Folding device of printing machine

Abstract

The invention discloses a folding device of a printing machine. The folding device comprises a roller, a folding knife, a folding knife shaft, an idler shaft, a planetary gear train and a power mechanism. The roller is hollow, only the semi roller face above a roller shaft is arranged between the printing machine and a wallboard. The folding knife is arranged on the folding knife shaft, the folding knife shaft is arranged between the two end faces of the roller and located below the roller shaft, the planetary gear train comprises a sun wheel, a planet wheel and an idle wheel, the idle wheel is respectively meshed with the sun wheel and the planet wheel, the idle wheel is arranged on the end face of the roller through the idler shaft, the sun wheel is arranged at one end of the roller shaft of the roller, and the planet wheel is arranged at one end of the folding knife shaft. The power mechanism is arranged at one end of the roller shaft of the roller. The folding device solves the vibration problem of the printing machine in the folding process, is stable in work, improves the folding quality, meanwhile, is simple and compact in structure, saves space and reduces cost.

Description

technical field [0001] The invention relates to the field of printing equipment, in particular to a folding device of a printing machine. Background technique [0002] Printing machines are generally equipped with special folding devices, which are customarily called folding machines. The folding machine is an important part of the printing machine, which is directly connected with the printing part to complete the work of cutting and folding the printed sheets. Folding is the last important process in printing production, and it is an important link to improve labor productivity, reduce paper loss, and increase yield. [0003] The folding method of the folding machine can generally be divided into impact folding machine and rolling folding machine. The difference between them is that the action of the folding knife is different when folding. The folding knife of the impact folding machine not only rotates with the folding roller, but also rotates around the center of the ...

AI Technical Summary

Problems solved by technology

The motion law of the cam mechanism type jackknife can be selected reasonably, but the cost is too high, and it is prone to vibration at high speed; while the structure of the crank swing rod mechanism is relatively simple, but it is very easy to vibrate at high speed, and the folding knife moves The law is fixed, and the installation requires a large space

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