Automatic plate-feeding device of printer

Abstract

The invention discloses an automatic plate-feeding device of a printer. The device comprises a plate cylinder, a central shaft, a bearing plate, a plate supporting roller, a plate tail clamp bar and a plate head clamp bar, wherein cam shafts are arranged on the plate tail clamp bar and the plate head clamp bar respectively; a pressing plate is arranged opposite to the plate tail clamp bar and theplate head clamp bar; the device also comprises a plate tail tensioning device and a pneumatic control device; the pneumatic control device comprises a rotary pneumatic device and a telescopic pneumatic device; a plate tail tensioning pushing swing rod and a plate tail tensioning transmission swing rod are sleeved on a plate tail tensioning swing rod shaft; a transmission tooth is arranged on a driving swing rod; the transmission tooth on the driving swing rod is in engaged transmission with a plate tail tensioning swing rod driving shaft; a rotary cylinder is arranged outside the bearing plate; a rotary cylinder driving swing rod is in engaged transmission with a transmission gear of a telescopic cylinder; the telescopic cylinder is fixed outside the bearing plate; and transmission grooves are formed at end parts of a gear shaft respectively. The automatic plate-feeding device of the printer has the advantages of simple structure, accurate tensity of a printing plate, simple transmission process, high working efficiency, low manufacturing cost and application to printing houses of all scales.

Description

technical field [0001] The invention relates to an auxiliary machine in the printing machine industry, in particular to an automatic plate loading device for a printing machine. Background technique [0002] At present, the plate loading operation in the printing machine industry is mostly manual plate loading. This traditional plate loading method takes a long time. The tension of the printing plate depends on the operator's feeling and experience. There is an error in the tension of a set of printing plates. It will affect the overprint accuracy and printing effect, so the traditional plate loading method has high requirements on the technical level of the operator, and is time-consuming and laborious, and the work efficiency is low. [0003] Although there are also semi-automatic plate loading devices, such as the Chinese patent "Semi-automatic plate loading mechanism for printing presses (ZL200810015910.1)", this patent discloses a mechanism that realizes plate loading t...

AI Technical Summary

Problems solved by technology

[0002] At present, the plate loading operation in the printing machine industry is mostly manual plate loading. This traditional plate loading method takes a long time. The tension of the printing plate depends on the operator's feeling and experience. There is an error in the tension of a set of printing plates. It will affect the overprinting accuracy and printing effect, so the traditional loading method has high requirements on the technical level of the operator, and it is time-consuming and laborious, and the work efficiency is low.

[0003] Although there are also semi-automatic plate loading devices, such as the Chinese patent "Semi-automatic plate loading mechanism for printing presses (ZL200810015910.1)", this patent discloses a mechanism that realizes plate loading through cylinders, sliders, and connecting rods. The clamping and loosening of the printing plate of this loading mechanism needs to be controlled by different cylinders, the structure is complicated, and the transmission process is cumbersome, which greatly reduces the accuracy of the tension, and the production cost is high, which increases the cost of the entire printing machine. Not good for wide use

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