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Real time automatic cleaning method and apparatus for ink-jet head of digital ink-jet printer

A digital inkjet and automatic cleaning technology, applied in printing and other fields, can solve the problems of difficult to control the cleaning operation time reasonably, cannot realize automatic real-time operation, low degree of automation, etc., and achieve the effect of convenient real-time cleaning, simple structure and high degree of automation

Inactive Publication Date: 2008-06-18
HANGZHOU HONGHUA DIGITAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention mainly solves the technical problems in the prior art that the degree of automation is low, the cleaning operation time is difficult to be reasonably controlled, and the structure is relatively complicated.
[0006] The invention also solves the technical problems in the prior art that the nozzle cleaning method and device of the digital inkjet printer are not reasonable, the stability is not high, and the cleaning effect is poor.
In particular, it solves the technical problem of being unable to realize automatic real-time operation existing in the prior art

Method used

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  • Real time automatic cleaning method and apparatus for ink-jet head of digital ink-jet printer
  • Real time automatic cleaning method and apparatus for ink-jet head of digital ink-jet printer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Embodiment 1: As shown in Figure 1, the ink in the main ink bottle of each color passes through the liquid flow pump and the ink filter, and injects the ink of this color into the ink supply bottle 4 of each color as required. The compressed air of the cleaning device of the present invention is produced by the air pump 1, injected into the main air circuit 2 after being filtered, and after passing through the valve body 7 on the main air circuit 2, the air flows through several three-way valves 8 to connect with each branch air circuit respectively. 3 connected to each other, then enter the ink supply bottles 4 of various colors, and be connected to each nozzle 6 by the ink filling pipeline 5 inserted into the bottom of each ink supply bottle 4. The valve body 7 is a three-way valve controlled by a relay, and one foot thereof is directly connected with the outside world. The plane where the nozzles of the spray head 6 are located is higher than the liquid level of the ...

Embodiment 2

[0027] Embodiment 2: As shown in Figure 2, the main gas path here is not connected to each branch gas path through a three-way pipe, but a buffer cavity 9 is provided on the main gas path 2, and the buffer cavity 9 is connected to each branch gas path Connected; the buffer chamber 9 is provided with an air inlet 10 and an air outlet 11 connected with the air branch 3 . The rest are the same as in Embodiment 1, and will not be repeated here.

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PUM

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Abstract

The invention relates to a real-time cleaning method of the blowing head of digital blowing drawing machine using dissolvent ink, and its device. The method includes following steps: a. hangs on the printing operation and shift the blowing head out of printing area when the digital blowing drawing machine is in service; b.. force the inks to flow out from the blowing head for a time with compressed air so to clean the blowing head; c. wait for a time after the cleaning is finished and then shift the blowing head back to the printing area to go back for the printing operation. The compressed air is generated by an air pump and transferred though the main air channel then to each branch air channels and into ink bottles of different color which connected to each blowing head through ink pouring tubes dipped to the bottom of the bottles. The main air channel is set with a valve. So the invention has a rational steps, high automation, remarkable cleaning effect, fine stability, simple device structure and rational tube arrangement which acquires the real-time cleaning handily and lengthen the service life of the blowing head.

Description

technical field [0001] The invention relates to a method and a device for cleaning a nozzle of a digital inkjet printer, in particular to a method and a device for real-time automatic cleaning of a nozzle of a digital inkjet printer using solvent-based ink. Background technique [0002] Inkjet printers spray ink droplets of various colors onto the printing medium through the nozzles to form printing patterns. Because it uses volatile solvent-based ink, the ink is easy to dry, condense, and agglomerate on the nozzle, so that the ink cannot be ejected from the nozzle smoothly, thereby seriously affecting the printing quality. In addition, because the ink contains a small amount of impurities, air bubbles, etc., it may cause blockage to the nozzle of the nozzle when it is used continuously for a long time; Unable to spray and so on. [0003] In order to meet the high-quality printing requirements, people have conducted long-term explorations and proposed various solutions for...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B41J2/165
Inventor 杨诚
Owner HANGZHOU HONGHUA DIGITAL TECH