Extra-large down-print corrugated case press with suction-assisted sheet feed

Abstract

The invention discloses a super-large downwards-pressing type corrugated paper box printing machine provided with an air-suction auxiliary paper feeding device. The machine comprise a pressing and printing roller and a printing roller which are arranged on the upper side and the lower side of corrugated paper; the printing length of the printing roller ranges from 4.5 m to 6 m; the air-suction auxiliary paper feeding device is further arranged above the corrugated paper and comprises an air suction chamber, an air suction chamber mounting frame and an auxiliary paper feeding mechanism; the air suction chamber is mounted on the printing machine through the air suction chamber mounting frame and is located on the outer side of the pressing and printing roller; and the auxiliary paper feeding mechanism is arranged in the air suction chamber. The machine is designed for printing of large or super-large corrugated paper boxes, the corrugated paper feeding process stability of the printing machine is improved by adding the air-suction auxiliary paper feeding device on the basis that the size of a printing platform is substantially increased, the corrugated paper is kept stable all the time to pass through the printing area between the printing roller and the pressing and printing roller and is not affected by the size, and the pressure stability between the corrugated paper and a printing plate is guaranteed, so that the printing quality is guaranteed.

Description

technical field [0001] The invention relates to the technical field of corrugated carton printing, in particular to a super-large bottom-print corrugated carton printing machine with a suction auxiliary paper feeding device. Background technique [0002] As product packaging boxes, corrugated boxes can be seen everywhere in life, and their surfaces are generally printed with relevant product information and advertisements. At present, the main components of a printing machine for corrugated boxes include printing rollers, anilox rollers, rubber rollers, embossing rollers, paper feed rollers, paper feed shafts, and paper feed wheels. In the printing process of corrugated cartons, according to the packaging requirements of different products, the specifications of corrugated cartons are also constantly changing, so corrugated carton printing machines of different specifications are required to complete the printing of corrugated cartons of corresponding specifications. [000...

AI Technical Summary

Problems solved by technology

However, for the above-mentioned large or super large corrugated boxes, due to the large area and thickness of the cardboard, and due to the installation requirements of the printing machine, the horizontal center distance between the paper feed roller and the printing roller is generally large, and the distance between the two sets of paper feed rollers The distance between the horizontal center of the corrugated paper is larger. During the process of conveying the corrugated paper from the feed roller and the feed roller to the printing roller and the embossing roller, due to the bending of the cardboard or the drooping of its own weight, as well as the vibration of the cardboard, it will cause the cardboard and the printing plate The pressure between them is unstable, which affects the printing quality

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