Automatic ink supply system

Abstract

The invention provides an automatic ink supply system and belongs to the technical field of screen ink printing. The automatic ink supply system is used for automatically supplying ink to a screen inkprinting machine and comprises a printing workbench and an ink barrel. An ink spraying device provided with an ink containing cavity for containing ink is arranged at one end of the printing workbench. The automatic ink supply system comprises an ink feeding pump, an ink return pump, a liquid level sensing part used for sensing the ink level of the ink containing cavity, and a control valve electrically connected with the ink feeding pump, the ink return pump and the liquid level sensing part; an input port of the ink feeding pump communicates with the ink barrel; an output port of the ink feeding pump communicates with the ink spraying device; an input port of the ink return pump communicates with the ink spraying device; an output port of the ink return pump communicates with the oil barrel; and the control valve is used for starting the ink return pump for suction operation when the liquid level sensing part senses that the ink level is higher than a preset liquid level. Through the automatic ink supply system, the liquid level of ink in the ink containing cavity can be monitored in real time, the ink is supplemented in time through the action of the control valve, the stability and uniformity of the ink are ensured, and the quality of finished printed products is improved.

Description

technical field [0001] The invention relates to the technical field of screen ink printing, in particular to an automatic ink supply system. Background technique [0002] The silk screen printing process of cigarette packs has always been characterized by brilliant colors, unique visual effects, thick touch, and strong three-dimensional sense. Due to the process characteristics of screen printing, the screen printing equipment needs to continuously add ink to the printing plate frame manually, and manually use the ink shovel Recycling ink, new and old inks will inevitably have differences after each ink addition, and the quality of inks is unstable, causing quality problems. Chinese patent CN204845110U discloses screen printing and when adding ink at one time, adding new ink and printing old ink in the original screen plate has very big differences, such as viscosity, temperature, hue, thixotropy, chemical properties, etc. If the ink on both sides of the screen is not stirr...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the above defects in the prior art, the present invention proposes an automatic ink supply system to solve the problems in the prior art that the ink quality is not stable, and the amount of ink in the ink cartridge is difficult to accurately control, etc.

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