CN104553329A - Ink jet head cleaning device - Google Patents
Ink jet head cleaning device Download PDFInfo
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- CN104553329A CN104553329A CN201310469738.8A CN201310469738A CN104553329A CN 104553329 A CN104553329 A CN 104553329A CN 201310469738 A CN201310469738 A CN 201310469738A CN 104553329 A CN104553329 A CN 104553329A
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- container
- fluid switch
- shower nozzle
- fluid
- nozzle
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Abstract
The invention provides an ink jet head cleaning device which comprises an air compressor, a first container, a second container, a first fluid switch and a negative pressure generating device, wherein an exhaust hole of the air compressor is connected with an air inlet of the first container, the air compressor is used for producing compressed air with a constant pressure; an ink inlet of an ink jet head is connected with a liquid outlet of the first container, an ink outlet of the ink jet head is connected with the first fluid switch, a closed space is formed between the outer surface of a nozzle and the inner surface of the second container, when the negative pressure generating device is in an opening state and the first fluid switch is in a closed state, a cleaning solution in the first container outflows through the ink inlet of the ink jet head and the nozzle; when the negative pressure generating device works, a negative pressure is formed in the second container. According to the ink jet head cleaning device, a structure of the ink jet head is prevented from being damaged by an overlarge pressure, and tiny dust is prevented from being adsorbed on the nozzle of the ink jet head to block the nozzle.
Description
Technical field
The present invention relates to printing technology, particularly relate to a kind of spray head cleaning device.
Background technology
In the use procedure of ink-jet printing apparatus, the nozzle place of shower nozzle is owing to adsorbing the attachment ink cured produced in minute dusts and ink jet process for a long time, occur gaging somebody or askew pin phenomenon through often after causing shower nozzle to use a period of time, directly affect spray printing printing quality.In order to recover the duty of shower nozzle, improving gaging somebody and askew pin phenomenon of producing in shower nozzle inkjet printing process, needing to carry out cleaning treatment to shower nozzle.
In prior art, mainly through syringe under manual control, the ink entrance of cleaning fluid from shower nozzle is injected, thus complete cleaning process.
But prior art exists following shortcoming: the nozzle of shower nozzle is exposed in open air, minute dusts in cleaning process, cannot be avoided to be adsorbed on spray nozzle place plug nozzle; Injector to inject cleaning fluid pressure not too easily controls, easily because the excessive damage nozzle structure of pressure.
Summary of the invention
The invention provides a kind of spray head cleaning device, minute dusts cannot be avoided to be adsorbed on spray nozzle place and easily because the problem of the excessive damage nozzle structure of pressure in order to solve in the cleaning process that exists in prior art.
The invention provides a kind of spray head cleaning device, comprising: air compressor, the first container, second container, first fluid switch and depression generator, wherein:
The exhaust outlet of described air compressor is connected with the air inlet of described first container, for inputing in described first container by the compressed air with constant pressure produced, flows out from the leakage fluid dram of described first container to make the cleaning fluid in described first container;
The ink entrance of shower nozzle is connected with the leakage fluid dram of described first container, the ink outlet port of described shower nozzle is connected with described first fluid switch, described shower nozzle is fixedly mounted on described second container, and the inner surface of the outer surface of the nozzle of described shower nozzle and described second container forms confined space, for be in open mode when described depression generator and described first fluid switch is in closed condition time, make the cleaning fluid in described first container flow in described second container after the nozzle of the leakage fluid dram of described first container, the ink entrance of described shower nozzle and described shower nozzle;
Described depression generator is connected with the pumping surfaces of described second container, for be in open mode when described depression generator and described first fluid switch is in closed condition time, make to form negative pressure in described second container.
Spray head cleaning device provided by the invention, the compressed air with constant pressure produced by air compressor makes the cleaning fluid in the first container through the nozzle flow of shower nozzle in second container, and make to form negative pressure in second container by depression generator, enhance the cleaning performance to spray nozzle, avoid because of the excessive damage nozzle structure of pressure; And the inner surface of the outer surface of the nozzle of shower nozzle and second container forms confined space, avoid in cleaning process, minute dusts is adsorbed on spray nozzle place plug nozzle.
Accompanying drawing explanation
Fig. 1 is the structural representation of a spray head cleaning device provided by the invention embodiment;
Fig. 2 is the structural representation of another embodiment of spray head cleaning device provided by the invention.
Detailed description of the invention
Below by specific embodiment and accompanying drawing, technical scheme of the present invention is described in further detail.
Fig. 1 is the structural representation of a spray head cleaning device provided by the invention embodiment.As shown in Figure 1, this device specifically can comprise: air compressor 11, first container 12, second container 13, first fluid switch 14 and depression generator 15, wherein:
The exhaust outlet of air compressor 11 is connected with the air inlet of the first container 12, for inputing in the first container 12 by the compressed air with constant pressure produced, flows out from the leakage fluid dram of the first container 12 to make the cleaning fluid in the first container 12;
The ink entrance of shower nozzle 16 is connected with the leakage fluid dram of the first container 12, the ink outlet port of shower nozzle 16 is connected with first fluid switch 14, shower nozzle 16 is fixedly mounted on second container 13, and the outer surface of the nozzle 17 of shower nozzle 16 and the inner surface of second container 13 form confined space, for when depression generator 15 is in open mode and first fluid switch 14 is in closed condition, the cleaning fluid in the first container 12 is made to flow in second container 13 after the nozzle 17 of the leakage fluid dram of the first container 12, the ink entrance of shower nozzle 16 and shower nozzle 16;
Depression generator 15 is connected with the pumping surfaces of second container 13, for when first fluid switch 14 is in closed condition, makes to form negative pressure in second container 13.
Concrete, the air inlet of the first container 12 is higher than the liquid level of the first container 12 cleaning liquid inside, and the leakage fluid dram of the first container 12 can be arranged on the bottom of the first container 12, is beneficial to cleaning fluid and flows out.Second container 13 is the container of a half opening, opening surface towards the nozzle 17 of shower nozzle 16, for receiving the liquid flowed out from the nozzle 17 of shower nozzle 16.The pumping surfaces of second container 13 is higher than the liquid level of liquid in second container 13, prevents depression generator 15 from aspirating liquid in second container 13.First fluid switch 14 is specifically as follows magnetic valve, flows out the ink outlet port of shower nozzle 16 for controlling liquid.
The operation principle of this device is:
When air compressor 11 and depression generator 15 are all in open mode, and first fluid switch 14 is when being in closed condition, the compressed air with constant pressure generated inputs in the first container 12 by the exhaust outlet of air compressor 11 and the air inlet of the first container 12 by air compressor 11, flow out from the leakage fluid dram bottom the first container 12 with the cleaning fluid of oppressing in the first container 12, and flow in shower nozzle 16 through the ink entrance of shower nozzle 16.Because first fluid switch 14 is in closed condition, depression generator 15 is in open mode, and the liquid therefore in shower nozzle 16 can only be flowed out in second container 13 by the nozzle 17 of shower nozzle 16.This process is called " malleation cleaning process ".
It should be noted that, the liquid of nozzle 17 outflow of shower nozzle 16 is the mixture of cleaning fluid and ink, also can be called " waste liquid " herein.
The spray head cleaning device that the present embodiment provides, the compressed air with constant pressure produced by air compressor makes the cleaning fluid in the first container through the nozzle flow of shower nozzle in second container, and make to form negative pressure in second container by depression generator, enhance the cleaning performance to spray nozzle, avoid because of the excessive damage nozzle structure of pressure; And the inner surface of the outer surface of the nozzle of shower nozzle and second container forms confined space, avoid in cleaning process, minute dusts is adsorbed on spray nozzle place plug nozzle.
Fig. 2 is the structural representation of another embodiment of spray head cleaning device provided by the invention.As shown in Figure 2, the spray head cleaning device that the present embodiment provides, on basis embodiment illustrated in fig. 1, can also realize " wash cycles process ", concrete:
Shower nozzle 16 in embodiment illustrated in fig. 1 can also be used for: when depression generator 15 is in closed condition and first fluid switch 14 is in open mode, and the cleaning fluid in the first container 12 is flowed out after the ink outlet port of the leakage fluid dram of the first container 12, the ink entrance of shower nozzle 16 and shower nozzle 16.
Concrete, the operation principle that this device realizes " wash cycles process " is:
When first fluid switch 14 and air compressor 11 are all in open mode, and depression generator 15 is when being in closed condition, the compressed air with constant pressure generated inputs in the first container 12 by the exhaust outlet of air compressor 11 and the air inlet of the first container 12 by air compressor 11, flow out from the leakage fluid dram bottom the first container 12 with the cleaning fluid of oppressing in the first container 12, and flow in shower nozzle 16 through the ink entrance of shower nozzle 16.Because depression generator 15 is in closed condition, first fluid switch 14 is in open mode, and the liquid therefore in shower nozzle 16 can only be flowed out by the ink outlet port of shower nozzle 16.This process is called " wash cycles process ".
It should be noted that, the liquid of the ink outlet port outflow of shower nozzle 16 is also the mixture of cleaning fluid and ink, i.e. waste liquid herein.
Further, the spray head cleaning device that the present embodiment provides, on basis embodiment illustrated in fig. 1, can also comprise: the 3rd container 21.
The inlet of the 3rd container 21 is connected with first fluid switch 14, for depositing the liquid flowed out from the ink outlet port of shower nozzle 16.
Concrete, the 3rd container 21 is connected with the ink outlet port of shower nozzle 16 by first fluid switch 14, and when first fluid switch 14 is in open mode, the liquid in shower nozzle 16 flows in the 3rd container 21 through the ink outlet port of shower nozzle 16 and the inlet of the 3rd container 21.The inlet of the 3rd container 21 can be arranged on the top of the 3rd container 21, and the waste liquid that the ink outlet port being conducive to collecting shower nozzle 16 flows out also is deposited, to avoid because waste liquid discharges arbitrarily the problem of environmental pollution brought.
Further, the spray head cleaning device that the present embodiment provides can also comprise: second fluid switch 22.
Second fluid switch 22 is connected between the leakage fluid dram of second container 13 and the inlet of the 3rd container 21, for being in open mode when second fluid switch 22, depression generator 15 be in closed condition and air compressor 11 is in closed condition time, the liquid flowed out from the leakage fluid dram of second container 13 is flowed into the 3rd container 21.Second fluid switch 22 is specifically as follows magnetic valve.
Concrete, 3rd container 21 is by the leakage fluid dram of second fluid switch 22 with second container 13, when second fluid switch 22 be in open mode, depression generator 15 be in closed condition and air compressor 11 is in closed condition time, the liquid in second container 13 flows in the 3rd container 21 through the inlet of the leakage fluid dram of second container 13 and the 3rd container 21.The leakage fluid dram of second container 13 can be arranged on the bottom of second container 13, and the waste liquid be conducive in second container 13 flows out.The inlet of the 3rd container 21 can lower than the leakage fluid dram of second container, and the waste liquid be conducive in second container 13 flow in the 3rd container 21 smoothly.The waste liquid that the leakage fluid dram that second container 13 collected by 3rd container 21 flows out also is deposited, to avoid being aspirated by depression generator 15 because depositing too much liquid in second container 13 and to discharge arbitrarily the problem of environmental pollution brought because of waste liquid.This process can be called " waste collection process ".
Further, the spray head cleaning device that the present embodiment provides can also comprise: controller 23.
Controller 23 is connected with first fluid switch 14, second fluid switch 22, air compressor 11 and depression generator 15 respectively, is in open mode for controlling first fluid switch 14 and air compressor 11 in the first setting-up time and controls second fluid switch 22 and depression generator 15 is in closed condition.
Further, controller 23 can also be used for:
In the second setting-up time, control depression generator and air compressor be in open mode and control first fluid switch and second fluid switch is in closed condition.
Further, controller 23 can also be used for:
In the 3rd setting-up time, control second fluid switch be in open mode and control depression generator and air compressor and be in closed condition.
Concrete, in the present embodiment, the state (opening or closing) of first fluid switch 14, second fluid switch 22, air compressor 11 and depression generator 15 can be controlled according to the first setting-up time preset, the second setting-up time and the 3rd setting-up time successively by controller 23, and control without the need to manual hand manipulation, can realize automatically cleaning shower nozzle.Namely first setting-up time performs the time of above-mentioned " wash cycles process ", and namely the second setting-up time performs the time of above-mentioned " malleation cleaning process ", and namely the 3rd setting-up time performs the time of above-mentioned " waste collection process ".
It should be noted that herein, those skilled in the art easily expect the effect for improving cleaning, and controller can control first fluid switch 14, second fluid switch 22, air compressor 11 and depression generator 15 multiple exercise above-mentioned " wash cycles process ", " malleation cleaning process " and " waste collection process ".
The spray head cleaning device that the present embodiment provides, the compressed air with constant pressure produced by air compressor makes the cleaning fluid in the first container through the nozzle flow of shower nozzle in second container, and make to form negative pressure in second container by depression generator, enhance the cleaning performance to spray nozzle, avoid because of the excessive damage nozzle structure of pressure; And the inner surface of the outer surface of the nozzle of shower nozzle and second container forms confined space, avoid in cleaning process, minute dusts is adsorbed on spray nozzle place plug nozzle; And can realize automatically cleaning shower nozzle.
Last it is noted that above each embodiment is only in order to illustrate technical scheme of the present invention, be not intended to limit; Although with reference to foregoing embodiments to invention has been detailed description, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein some or all of technical characteristic; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the scope of various embodiments of the present invention technical scheme.
Claims (8)
1. a spray head cleaning device, is characterized in that, comprising: air compressor, the first container, second container, first fluid switch and depression generator, wherein:
The exhaust outlet of described air compressor is connected with the air inlet of described first container, for inputing in described first container by the compressed air with constant pressure produced, flows out from the leakage fluid dram of described first container to make the cleaning fluid in described first container;
The ink entrance of shower nozzle is connected with the leakage fluid dram of described first container, the ink outlet port of described shower nozzle is connected with described first fluid switch, described shower nozzle is fixedly mounted on described second container, and the inner surface of the outer surface of the nozzle of described shower nozzle and described second container forms confined space, for be in open mode when described depression generator and described first fluid switch is in closed condition time, make the cleaning fluid in described first container flow in described second container after the nozzle of the leakage fluid dram of described first container, the ink entrance of described shower nozzle and described shower nozzle;
Described depression generator is connected with the pumping surfaces of described second container, for be in open mode when described depression generator and described first fluid switch is in closed condition time, make to form negative pressure in described second container.
2. device according to claim 1, is characterized in that, described shower nozzle also for:
When described depression generator is in closed condition and described first fluid switch is in open mode, the cleaning fluid in described first container is flowed out after the ink outlet port of the leakage fluid dram of described first container, the ink entrance of described shower nozzle and described shower nozzle.
3. device according to claim 2, is characterized in that, also comprises: the 3rd container;
The inlet of described 3rd container is connected with described first fluid switch, for depositing the liquid flowed out from the ink outlet port of described shower nozzle.
4. device according to claim 3, is characterized in that, also comprises: second fluid switch;
Described second fluid switch is connected between the leakage fluid dram of described second container and the inlet of described 3rd container, for being in open mode when described second fluid switch, described depression generator be in closed condition and described air compressor is in closed condition time, the liquid flowed out from the leakage fluid dram of described second container is flowed into described 3rd container.
5. device according to claim 4, is characterized in that, also comprises: controller;
Described controller is connected with described first fluid switch, described second fluid switch, described air compressor and described depression generator respectively, is in open mode for controlling described first fluid switch and described air compressor in the first setting-up time and controls described second fluid switch and described depression generator is in closed condition.
6. device according to claim 5, is characterized in that, described controller also for:
In the second setting-up time, control depression generator and described air compressor be in open mode and control described first fluid switch and described second fluid switch is in closed condition.
7. the device according to claim 5 or 6, is characterized in that, described controller also for:
In the 3rd setting-up time, control described second fluid switch be in open mode and control described depression generator and described air compressor is in closed condition.
8. the device according to any one of claim 4-6, is characterized in that, described first fluid switch and described second fluid switch are magnetic valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310469738.8A CN104553329B (en) | 2013-10-10 | 2013-10-10 | Spray head cleaning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310469738.8A CN104553329B (en) | 2013-10-10 | 2013-10-10 | Spray head cleaning device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104553329A true CN104553329A (en) | 2015-04-29 |
| CN104553329B CN104553329B (en) | 2016-06-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310469738.8A Expired - Fee Related CN104553329B (en) | 2013-10-10 | 2013-10-10 | Spray head cleaning device |
Country Status (1)
| Country | Link |
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| CN (1) | CN104553329B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105437772A (en) * | 2015-12-17 | 2016-03-30 | 重庆宏劲印务有限责任公司 | Inkjet printer nozzle cleaning device |
| CN105562412A (en) * | 2015-12-25 | 2016-05-11 | 北海绩迅电子科技有限公司 | Cleaning machine and cleaning method for renewable cartridge |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101049761A (en) * | 2007-05-10 | 2007-10-10 | 复旦大学 | Method and device for cleaning out printing head of piezoelectric type ink jet printer |
| CN101189131A (en) * | 2005-01-07 | 2008-05-28 | 富士胶卷迪马蒂克斯股份有限公司 | Fluid drop ejection |
| CN201186533Y (en) * | 2008-06-13 | 2009-01-28 | 福建鸿博印刷股份有限公司 | Ink jet head cleaner |
| CN102001226A (en) * | 2009-08-31 | 2011-04-06 | 精工爱普生株式会社 | Liquid ejecting apparatus and method of cleaning liquid ejecting head of liquid ejecting apparatus |
| CN201824645U (en) * | 2010-06-30 | 2011-05-11 | 北大方正集团有限公司 | Nozzle cleaning device |
| US20110115844A1 (en) * | 2008-06-24 | 2011-05-19 | Chizuo Ozawa | Printing device |
| CN102211459A (en) * | 2010-03-16 | 2011-10-12 | 精工爱普生株式会社 | Liquid ejection device |
| CN102442068A (en) * | 2010-09-30 | 2012-05-09 | 北大方正集团有限公司 | Spray head cleaning device and working method thereof |
| CN103144436A (en) * | 2011-12-06 | 2013-06-12 | 北大方正集团有限公司 | Shower nozzle washing device and washing method |
| CN203110524U (en) * | 2012-10-17 | 2013-08-07 | 廖永红 | Anti-settlement EL jet printing ink path system capable of performing double-negative-pressure circulating side jet |
| CN104582973A (en) * | 2012-08-24 | 2015-04-29 | 株式会社御牧工程 | Head cleaning device, ink-jet recording device, and head cleaning method |
-
2013
- 2013-10-10 CN CN201310469738.8A patent/CN104553329B/en not_active Expired - Fee Related
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101189131A (en) * | 2005-01-07 | 2008-05-28 | 富士胶卷迪马蒂克斯股份有限公司 | Fluid drop ejection |
| CN101049761A (en) * | 2007-05-10 | 2007-10-10 | 复旦大学 | Method and device for cleaning out printing head of piezoelectric type ink jet printer |
| CN201186533Y (en) * | 2008-06-13 | 2009-01-28 | 福建鸿博印刷股份有限公司 | Ink jet head cleaner |
| US20110115844A1 (en) * | 2008-06-24 | 2011-05-19 | Chizuo Ozawa | Printing device |
| CN102001226A (en) * | 2009-08-31 | 2011-04-06 | 精工爱普生株式会社 | Liquid ejecting apparatus and method of cleaning liquid ejecting head of liquid ejecting apparatus |
| CN102211459A (en) * | 2010-03-16 | 2011-10-12 | 精工爱普生株式会社 | Liquid ejection device |
| CN201824645U (en) * | 2010-06-30 | 2011-05-11 | 北大方正集团有限公司 | Nozzle cleaning device |
| CN102442068A (en) * | 2010-09-30 | 2012-05-09 | 北大方正集团有限公司 | Spray head cleaning device and working method thereof |
| CN103144436A (en) * | 2011-12-06 | 2013-06-12 | 北大方正集团有限公司 | Shower nozzle washing device and washing method |
| CN104582973A (en) * | 2012-08-24 | 2015-04-29 | 株式会社御牧工程 | Head cleaning device, ink-jet recording device, and head cleaning method |
| CN203110524U (en) * | 2012-10-17 | 2013-08-07 | 廖永红 | Anti-settlement EL jet printing ink path system capable of performing double-negative-pressure circulating side jet |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105437772A (en) * | 2015-12-17 | 2016-03-30 | 重庆宏劲印务有限责任公司 | Inkjet printer nozzle cleaning device |
| CN105562412A (en) * | 2015-12-25 | 2016-05-11 | 北海绩迅电子科技有限公司 | Cleaning machine and cleaning method for renewable cartridge |
| CN105562412B (en) * | 2015-12-25 | 2017-10-03 | 北海绩迅电子科技有限公司 | The cleaning machine and cleaning method of a kind of ink horn of regeneration |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104553329B (en) | 2016-06-08 |
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