Process for water transferring on the surface of large workpiece and equipment thereof

Abstract

A method and the equipment carrying out the water transfer printing on the surface of the large workpiece are provided. The water transfer printing method comprises the steps that (1) the workpiece is fixed on a frame and the water is poured into a water pool; (2) the water transfer printing membrane is smoothly paved on the water surface and the bubble below the printing membrane is removed; (3) an oil ink activator is sprayed on the surface of the water transfer printing membrane; (4) the frame is downwards rotated, ensuring the workpiece to be dipped below the water surface; (5) after the water transfer printing membrane is completely coated on the surface of the workpiece, the frame is upwards rotated, ensuring the workpiece to be exposed out of the water in a vertical condition, and the workpiece is removed from the frame and is flatly arranged on a cleaning table; (6) the oil sewage on the surface of the workpiece is cleaned. The invention also comprises the large workpiece water transfer printing equipment and the cleaning pool. The invention is especially suitable for the graph-text water transfer printed on the surface of the large workpiece, the graph-text by transfer printed without distortion or deformation has no rupture crack and oblique crack, and has good quality and high efficiency.

Description

technical field [0001] The invention relates to a printing method and equipment, in particular to a method and equipment for water transfer printing on the surface of a large workpiece. Background technique [0002] Water transfer printing technology is a kind of printing technology. It uses the pressure of water to coat graphics and text on the surface of the workpiece for transfer printing. It solves the technical problem of printing patterns and characters on irregular curved surfaces of products made of various materials. Now it is widely used for image water transfer printing on ceramics, wood, plastic, glass, metal and other products (such as various small handicrafts, decorations, car interiors, etc.). [0003] However, the existing water transfer printing technology still has the following defects: the pattern is easily stretched during the coating process, causing pattern distortion and deformation; it is only suitable for transfer printing on small workpieces, and...

AI Technical Summary

Problems solved by technology

[0003] However, the existing water transfer printing technology still has the following defects: the pattern is easily stretched during the coating process, causing pattern distortion and deformation; it is only suitable for transfer printing on small workpieces, and it is difficult to print on larger workpieces (such as door pockets, Door leaves, furniture panels, tabletops, with an area greater than 1.5m 2 Glass, stone, ceramic products, refrigerators, water dispenser panels, etc.) are successfully transferred. The reason is that the water transfer film pattern floating on the water surface is difficult to completely cover the surface of the large workpiece, and there are often only a few Part of the surface is covered with graphics. When the workpiece is taken out of the water, the water transfer mold covered on the surface of the workpiece always slides off from the surface of the workpiece; When the solvent is sprayed on the surface of the printing film, the water transfer film sprayed with the solvent first has already melted, and then the water transfer film sprayed has not yet melted, so there is no way to cover it at all; the third is that even if the surface of the workpiece is covered with water transfer film However, there are often large areas of blisters; Fourth, even if the water transfer film is covered, the pattern on the surface of the workpiece will either have broken lines or twill lines.

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