Printing device for plastic package bags

Abstract

The invention discloses a printing device for plastic package bags. The printing device comprises a machine frame. An unwinding roller is arranged on the machine frame. A supporting roller is arrangedon the lower right side of the unwinding roller and tangent to a printing roller. An ink roller is arranged on one side of the printing roller. A first guide roller and a second guide roller are arranged on the lower left side of the supporting roller. A winding roller is arranged on one side of the second guide roller. A motor is arranged on the machine frame. The output end of the motor is fixedly connected with one end of a rotating shaft. The other end of the rotating shaft is fixedly connected with one end of the ink roller. A first ink inlet is formed in one end of the ink roller. An annular sponge is arranged on the inner wall of the ink roller. Ink outlets are evenly formed in the wall of the ink roller. An ink sleeve is arranged on the outer wall of the ink roller. An ink tank isarranged at the bottom of the machine frame. A second ink inlet is formed in the upper end of the ink tank. An ink outlet is formed in the bottom end of the ink tank and connected with a pump throughan ink outlet pipe. The pump is connected with the first ink inlet through an ink inlet pipe. By means of the printing device for the plastic package bags, ink can be evenly laid on the printing roller, and the printing quality is improved.

Description

technical field [0001] The invention relates to a printing device, in particular to a printing device for plastic packaging bags. Background technique [0002] The emergence of plastic bags has brought great convenience to people's life and travel. With the continuous development of society, the use of plastic bags is also increasing. For the sake of aesthetics and publicity, characters and patterns are often printed on the surface of plastic bags. In the existing gravure printing machine for plastic bags, the printing roller is soaked in the ink tank for ink, which will lead to excessive printing ink, even if the ink is scraped later. It is still impossible to completely remove excess ink, and the printing effect is poor. In addition, because the ink tank is static, the concentration of the ink in it is uneven due to precipitation, which eventually leads to color differences in the later stage. If the agitator is directly installed in the ink tank, the agitator will genera...

AI Technical Summary

Problems solved by technology

For the sake of aesthetics and publicity, characters and patterns are often printed on the surface of plastic bags. In the existing gravure printing machine for plastic bags, the printing roller is soaked in the ink tank to get ink, which will lead to excessive printing ink, even if the ink is scraped later. Still unable to completely remove excess ink, poor printing effect

In addition, since the ink tank is static, the concentration of the ink in it is uneven due to precipitation, which will eventually lead to color differences in the later stage. If the agitator is directly installed in the ink tank, the agitator will generate heat during the work process, which will affect the ink. quality

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