Anti-expansion mechanism of printing machine
A technology for printing presses and printing units, applied in printing presses, printing, general parts of printing machinery, etc., can solve the problems of reducing printing efficiency and printing quality, roller swinging up and down, and increasing waste rate, etc., to achieve printing efficiency and printing quality. High, guaranteed accuracy, low scrap rate
Pending Publication Date: 2022-04-05
WUXI BAONAN MACHINE MFG
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Problems solved by technology
The fan-shaped expansion caused by paper deformation will affect the accuracy of overprinting, reduce printing efficiency and printing quality, and increase the reject rate
[0003] In order to avoid the fan-shaped expansion of the paper, an anti-expansion mechanism can usually be installed in the printing machine, but in the anti-expansion mechanism of the existing printing machine, the rollers swing up and down on the paper at the same time, and it is impossible to make each roller swing up and down on the paper. The problem of paper fanning is still not effectively solved
Method used
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[0020] The technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings and embodiments. Apparently, the described embodiments are only a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0021] Such as Figure 1 to Figure 3 As shown: an anti-expansion mechanism for a printing machine, including a main shaft 14, and support seats 1 are provided at both ends of the main shaft 14; an anti-expansion mechanism 21 is provided between every two adjacent printing units on the main shaft 14 The anti-expansion mechanism 21 includes opposite connecting plates 7; a roller assembly 22 is provided between one end of the two connecting plates 7, and a shaft 13 is provided at the other end....
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The invention provides an anti-expansion mechanism of a printing machine. The anti-expansion mechanism comprises a main shaft, and supporting seats are arranged at the two ends of the main shaft; an anti-expansion mechanism is arranged between every two adjacent printing units on the main shaft; the anti-expansion mechanism comprises connecting plates which are oppositely arranged; a roller assembly is arranged between one ends of the two connecting plates, and a shaft is arranged at the other ends of the two connecting plates. The connecting plate can swing up and down by adjusting the adjusting rod, so that the roller is driven to swing up and down on paper, the problem of fan-shaped expansion caused by paper deformation after the paper is watered is effectively solved, and the overprinting accuracy is guaranteed. The device is reasonable in structure, high in printing efficiency and printing quality and low in rejection rate.
Description
technical field [0001] The invention relates to the field of printing equipment, in particular to an anti-expansion mechanism of a printing machine. Background technique [0002] When the existing printing machine is working, due to the reason of the paper itself, the weight is different, and the water absorption is also different. After the paper is printed by each color group unit, it will absorb the water on the printing plate, and the phenomenon of fan-shaped expansion of the paper will appear. Even for paper of the same quality, due to different formats, the degree of expansion is different, and the degree of expansion of each area of the paper is also different. The fan-shaped expansion caused by paper deformation will affect the accuracy of overprinting, reduce printing efficiency and printing quality, and lead to an increase in reject rate. [0003] In order to avoid the fan-shaped expansion of the paper, an anti-expansion mechanism can usually be installed in the...
Claims
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Inventor 李雷
Owner WUXI BAONAN MACHINE MFG