Printing-down machine

Abstract

The invention relates to a printing-down machine, which comprises a machine body and a sealing cover for opening or closing the opening of the machine body. A rotating shaft rotationally connected tothe machine body is fixed on one side of the sealing cover. A first gear is coaxially fixed at one end of the rotating shaft. A rack meshed with the first gear and a driving member for driving the rack to move linearly and limiting the displacement of the rack are arranged in a sliding manner on the machine body. The printing-down machine has the effects as follows: there is no need to use a gas spring to support the sealing cover, automatic turnover of the sealing cover is avoided to the greatest extent, and the safety of the staff is guaranteed.

Description

technical field [0001] The invention relates to the technical field of packaging box manufacturing equipment, in particular to a printing machine. Background technique [0002] At present, the printing machine is a kind of contact exposure imaging equipment used to make printing plates. It uses pressure (including atmospheric pressure and mechanical pressure) to make the original plate and the photosensitive plate closely bonded, so that the image on the original plate can be accurately imaged by photochemical reaction. Printed on a photosensitive plate. The plate printing machine is mainly composed of a light source device, an exposure chamber, a vacuum chamber, an electrical part, a machine base and other parts. [0003] The existing authorization announcement number is CN205374984U, which discloses a printing machine with good exposure effect, including a chassis, a glass plate, a gas spring, a height adjustment rod, a lighting lamp, a vacuum insulation board, a cooling ...

AI Technical Summary

Problems solved by technology

[0004] The above-mentioned existing technical solutions have the following defects: when the PS plate needs to be replaced, the sealing cover is directly flipped open, and the gas spring is used to limit the sealing cover to the opening state of the chassis. After the PS plate is replaced , and then manually turn the sealing cover downwards to seal the opening of the chassis, and then carry out the printing work

During this process, due to the frequent replacement of the PS plate, the sealing cover needs to be turned over frequently, resulting in frequent expansion and contraction of the gas spring, and the internal closure of the gas spring is easily damaged during the frequent expansion and contraction of the gas spring, causing the staff to In the process of replacing the PS plate, the gas spring may be damaged and lose its support for the sealing cover, and the sealing cover may turn over and hurt people, posing a certain safety hazard

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