Plate roller mechanism with water cooling structure and printer

Abstract

The invention discloses a plate roller mechanism with a water cooling structure and a printer. The printer comprises the plate roller mechanism; the plate roller mechanism with the water cooling structure comprises a plate roller drum sleeving a plate roller shaft; the plate roller drum and the plate roller shaft are rotated at the same time; multiple channels are formed in the plate roller drum;the channels communicate to form a loop; a rotating joint device is arranged on the plate roller shaft, and is provided with a water inlet and a water outlet; the water inlet always communicates withan inlet of the loop; the water outlet always communicates with an outlet of the loop; the plate roller mechanism is provided with the water cooling structure; cooling liquid (such as water) is introduced in the water cooling structure to achieve an effect of controlling the temperature of the plate roller drum (mainly lowering the temperature); the cooling liquid can be fed from the water inlet and drained from the water outlet; and the cooling liquid can exchange heat with the plate roller drum to prevent influence on ink by the temperature rise of the plate roller drum.

Description

technical field [0001] The present invention relates to printing equipment, in particular to a plate roller mechanism. Background technique [0002] A printing machine with an offset printing unit is a commonly used printing equipment. When printing, the printing plate with printed graphics is installed on the plate roller, and the ink form roller transfers the ink to the printing plate of the plate roller, and the plate roller will The printed graphics on the printing plate are transferred to the rubber cylinder (that is, the transfer roller), and then transferred to the paper by the rubber cylinder. [0003] The plate cylinder is pressed against the ink form roller and transfer roller during printing, and the temperature on the plate cylinder will change, mainly due to the temperature rise. The temperature change of the plate cylinder will affect the ink, resulting in affecting the printing quality, such as When the printing time is long, the temperature on the plate cyli...

AI Technical Summary

Problems solved by technology

[0003] The plate cylinder is pressed against the ink form roller and transfer roller during printing, and the temperature on the plate cylinder will change, mainly due to the temperature rise. The temperature change of the plate cylinder will affect the ink, resulting in affecting the printing quality, such as When the printing time is long, the temperature on the plate cylinder rises rapidly, which will cause the temperature of the ink to rise and become thinner, resulting in more printing defects and seriously affecting the printing quality of the printed matter.

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