Intelligent ink supply device with multi-protection function and implementation method thereof

Abstract

The invention discloses an intelligent ink supply device with a multi-protection function and an implementation method thereof. The intelligent ink supply device comprises a secondary ink box, an ink supply passage and a negative-pressure gas circuit. The ink supply passage and the negative-pressure gas circuit are both connected with the secondary ink box. The negative-pressure gas circuit comprises a vacuum pump, a flow limiting valve, a two-position five-port manual valve, a negative-pressure cavity, a negative-pressure meter and a negative-pressure box. The vacuum pump is connected to one end of the two-position five-port manual valve through the flow limiting valve. The other end of the two-position five-port manual valve is connected with the negative-pressure cavity, the negative-pressure meter and the negative-pressure box. The ink supply passage comprises an ink supply pump control device, an ink barrel and an ink supply pump. The ink supply pump control device and the ink barrel are connected with the ink supply pump. Through cooperative action of the three protection measures, the situation that an ink supply pump supplies ink continuously, accordingly, ink overflows, and a vacuum pump is damaged can be effectively prevented. Meanwhile, since the negative-pressure cavity is additionally formed, the buffer volume of negative pressure is increased, and the negative pressure is more stable.

Description

technical field [0001] The invention relates to the technical field of ink supply protection for automatic ink supply of a digital printer, in particular to an intelligent ink supply device with a negative pressure system and multiple protection functions and a realization method thereof. Background technique [0002] Its principle of work of present known negative pressure ink supply device is: by vacuum pump air is pumped to atmosphere and produces negative pressure, and negative pressure receives secondary ink box after the negative pressure box buffers. The ink supply pump draws ink from the ink barrels to the secondary ink cartridges. The secondary ink cartridge then supplies ink to the printheads. There is a level sensor (float switch) in the secondary ink tank to detect whether the ink is full. When it is detected that the ink is not full, turn on the ink supply pump to supply ink. When it is detected that the ink is full, turn off the ink supply pump to stop the i...

AI Technical Summary

Problems solved by technology

[0003] The disadvantages of the existing negative pressure ink supply device are: the safety is poor, and the ink supply pump may supply ink all the time, which may cause ink overflow to damage the equipment and pollute the machine and products

This will cause the ink to corrode the vacuum pump and cause damage to the vacuum pump

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