Dampening mechanism for offset printing equipment, and printing machine

Abstract

The invention relates to the field of offset printing equipment, in particular to a dampening mechanism for offset printing equipment, and a printing machine. The dampening mechanism comprises part ofmounting frames; a cylinder, a dampening roller, a water distributing roller, a metering roller and a water tank roller are arranged between the mounting frames in a horizontal-rotation mode; the cylinder abuts against the dampening roller, the water distributing roller is arranged on the lower side of the dampening roller and abuts against the dampening roller, and the metering roller is arranged on the side, away from the cylinder, of the dampening roller and abuts against the dampening roller; the water tank roller is connected with the mounting frames through position control assemblies,a liquid storage tank is fixedly arranged on the lower side of the water tank roller, and the water tank roller extends into the liquid storage tank; and a temperature control assembly is arranged inthe liquid storage tank, the cylinder, the dampening roller and the water distributing roller are connected through a first transmission assembly, and the dampening roller, the metering roller and thewater tank roller are connected through a second transmission assembly. The effect of dampening on the cylinder can be additionally achieved, meanwhile the thickness of a water film can be changed, the purpose of meeting different offset printing demands is achieved, meanwhile the influence on the environment can be avoided, and the offset printing effect is further ensured.

Description

technical field [0001] The invention relates to the field of offset printing equipment, in particular to a watering mechanism and a printing machine of the offset printing equipment. Background technique [0002] Offset printing equipment is a kind of lithographic printing machine. When printing, the printed graphics and texts are first printed from the printing plate to the rubber cylinder, and then transferred to the paper by the rubber cylinder. The elasticity of the rubber cylinder is used to ensure the printing clarity, and the printing effect is better. High, before offset printing, it is often necessary to apply water to the plate cylinder, because the pattern part on the plate cylinder is made of water-repellent material, while the blank part is made of hydrophilic material. Offset sharpness. [0003] However, the thickness of the existing offset printing water film cannot be adjusted. In the case of changing the plate cylinder, etc., the effect of watering is lik...

AI Technical Summary

Problems solved by technology

[0006] 1. In this scheme, the water impingement roller and the water roller are directly offset. The water impingement effect of the water impregnation roller on the plate cylinder is poor. At the same time, the position of the water roller is adjusted to change the pressure between it and the water roller to control the thickness of the water film, which is easy The contact effect between the water roller and the plate cylinder is poor, which affects the water effect

[0007] 2. This solution does not consider the impact of the environment on the dampening solution, and in some environments it is easy to reduce the dampening effect

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