Printing method for special-face conical bottles on common screen printing machines

Abstract

The invention discloses a printing method for special-face conical bottles on common screen printing machines. The printing method comprises the steps of a, deviating the rotation circle center of a printing bottom mold from the circle center of the printing bottom mold; b, arranging a rotation shaft and a connection rod on a printing nozzle additionally; c, conveying the special-face conical bottles to the part under a screen printing plate through a bottle support clamp and clamping and fixing the special-face conical bottles through the printing bottom mold and the printing nozzle; d, driving the bottle bottoms and the bottle openings of the special-face conical bottles to swing towards different directions in the horizontal direction through the printing bottom mold and the printing nozzle, lifting the bottle openings upwards and dropping the bottle bottoms slightly in the vertical direction; and e, swinging a scraper on the screen printing plate in a similar fan-shaped mode relative to the special-face conical bottles and applying printing ink to bottle bodies of the special-face conical bottles in a scraping mode. According to the printing method for the special-face conical bottles on the common screen printing machines, the problems that the printing surfaces of the special-face conical bottles are inclined, the size deviation of the upper parts and the lower parts of the printing areas is large and printing is difficult because the conical degree of the bottle bodies is large and the printing surfaces are irregular are solved.

Description

technical field [0001] The invention relates to the technical field of printing equipment, in particular to a printing method for different-surface conical bottles on a common screen printing machine. Background technique [0002] A screen printing machine is a machine that uses a screen printing plate to print. It belongs to a kind of printing machine. A screen printing machine is a machine for printing text and images. It is a general term for machines or equipment used to produce printed matter. The screen printing machine is a representative printing equipment in the stencil printing machine. The material for making the screen is not only silk, but also nylon wire, steel wire, copper wire or stainless steel wire. [0003] Screen printing machines are often used to print patterns on the side of plastic bottles. The general shape of plastic bottles is round, flat, and square. The shape of these plastic bottles is relatively regular and symmetrical, and the size of the prin...

AI Technical Summary

Problems solved by technology

[0005] (1) The cone structure leads to different sizes of the upper and lower printable areas of the bottle body. The printable area near the bottle mouth is the smallest, and the printable area near the bottom of the bottle is the largest. In this way, when selecting printing gears, it is impossible to achieve small printing area and large printing area. The print area is also taken into account (see Figure 1b )

[0006] (2) The cone structure will cause the curvature of the bottle body close to the mouth of the bottle to be large, and the curvature of the bottom of the bottle to be small. When the scraper moves laterally along a straight line, the position of the bottle mouth of the bottle body and the bottom of the bottle are not in contact with the scraper. (See Figure 2b ), while the mouth of the general plastic bottle and the bottom of the bottle are in contact with the scraper in a straight line (see Figure 2a )

[0007] Based on the characteristics of the different-sided conical flasks, there will be defects such as failure to print and unclear printing when printing on ordinary screen printing machines. For example, simply increasing the pressure of the squeegee cannot solve the problem.

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