Circulation ink providing device and printing equipment

Abstract

The invention discloses a circulation ink providing device and printing equipment. The circulation ink providing device is simple in structure and the ink flowing speed of a nozzle and an ink pressure range needed by the nozzle can be adjusted in a wide amplitude. The circulation ink providing device comprises a nozzle, a pump, a main ink barrel and an ink feeding device and is characterized by further comprising a pressure generating device. The pressure generating device is connected with the main ink barrel and used for providing inner circumstance pressure for the main ink barrel so that the ink in the ink barrel can flow into the nozzle and ejected out of the nozzle under the action of the inner circumstance pressure.

Description

Technical field [0001] The invention relates to the technical field of ink supply, in particular to a circulating ink supply device and a printing device. Background technique [0002] Digital inkjet printing equipment is a kind of printing equipment commonly used in modern industry. Due to its digital printing characteristics, it can directly print data without going through the plate making process in the printing process of traditional printing equipment, and can realize variable data printing, etc. The advantages are favored by people. [0003] In inkjet printing equipment, a through flow circulating ink supply device is usually used, and ink is supplied to the nozzles in a circulating manner. Such a circulating ink supply device utilizes the circulation of ink in the nozzle to take away impurities and bubbles in the nozzle, so as to prevent the impurities or bubbles from blocking the nozzle or affecting the printing effect of the printing equipment. At the same time, the cir...

AI Technical Summary

Problems solved by technology

[0007] In the above-mentioned circulating ink supply device, see figure 1 , the flow rate of the ink in the pump 3 is controlled by the flow rate regulating valve 7, the device is relatively complicated, and accordingly, the control complexity of the system is also relatively high, which is not conducive to cost saving

Moreover, in the prior art, usually the control of the inkjet pressure and the ink flow rate of the nozzle cannot be taken into account at the same time, and the good working performance of the nozzle cannot be guaranteed.

[0008] To sum up, the structure and control system of the existing circulating ink supply device are relatively complicated, the cost is high, and the working performance of the device is relatively poor.

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