CN108162601A - A kind of digital printer ink supply constant negative pressure device - Google Patents
A kind of digital printer ink supply constant negative pressure device Download PDFInfo
- Publication number
- CN108162601A CN108162601A CN201711429474.8A CN201711429474A CN108162601A CN 108162601 A CN108162601 A CN 108162601A CN 201711429474 A CN201711429474 A CN 201711429474A CN 108162601 A CN108162601 A CN 108162601A
- Authority
- CN
- China
- Prior art keywords
- negative pressure
- holding meanss
- briquetting
- vacuum pump
- digital printer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
- B41J2/01—Ink jet
- B41J2/17—Ink jet characterised by ink handling
- B41J2/175—Ink supply systems ; Circuit parts therefor
- B41J2/17503—Ink cartridges
- B41J2/17556—Means for regulating the pressure in the cartridge
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
- B41J2/01—Ink jet
- B41J2/17—Ink jet characterised by ink handling
- B41J2/175—Ink supply systems ; Circuit parts therefor
- B41J2/17503—Ink cartridges
- B41J2/17506—Refilling of the cartridge
- B41J2/17509—Whilst mounted in the printer
Landscapes
- Ink Jet (AREA)
Abstract
The invention discloses a kind of digital printer ink supply constant negative pressure devices; including vacuum pump, check valve, negative pressure holding meanss, secondary protection device, two level ink sac device, pump, print cartridge and nozzle; the vacuum pump, check valve, negative pressure holding meanss, secondary protection device, two level ink sac device, pump and print cartridge are sequentially connected, and nozzle is also associated on two level ink sac device；Guide post is additionally provided between the negative pressure head cover and negative pressure bottom cover, the lower end of guide post is fixedly connected with spring by baffle ring, and lower spring end is fixedly connected with briquetting, and briquetting lower end is equipped with diaphragm, and diaphragm is fixedly mounted on negative pressure bottom cover.The present invention offsets the pressure of negative pressure by increasing briquetting, by the gravity of briquetting, reduces the rigidity of spring, in the case where ensureing that pressure is constant, provides more air variable quantities, increases the stability of negative pressure system.And reduce the volume of negative pressure holding meanss.
Description
Technical field
The present invention relates to digital printing field, specifically a kind of digital printer ink supply constant negative pressure device.
Background technology
With the continuous development of digital printing, the requirement that people work for digital printing function lasting stability is increasingly
Height, nozzle can not occur blocking in prolonged print procedure and ink bleed, it is therefore desirable to which the ink inside spray nozzle is in nozzle
Surface forms a curved liquid, and the condition for forming meniscus is one negative pressure of formation in two level ink sac, and ink is held by atmospheric pressure
Water, when negative pressure is excessive, nozzle is not enough to offset atmospheric pressure when working, and ink can not spray, and is that nozzle blocks；When negative pressure mistake
Hour, atmospheric pressure is enough to offset the pressure that ink leans on gravity to generate, ink exudation；If negative pressure is unstable, can influence to print matter
Amount.
In the prior art, a kind of scheme is to extract air, while extract the fast of gas by throttle valve adjustment by vacuum pump
Slowly, the stabilization of ink feeding system internal pressure is kept.Another scheme is an external cylinder, by the way that cylinder volume is increased,
To keep the stabilization of ink feeding system internal pressure；It needs to adjust throttle valve size manually when the first scheme is not only switched on, also
In vacuum pump work, the fluctuation of output gas flow causes its negative pressure unstable, and second scheme is not easy to pacify since negative pressure cylinder is excessive
It fills and puts, wasting space influences beauty.
Invention content
The purpose of the present invention is to provide a kind of digital printer ink supply constant negative pressure device, to solve above-mentioned background technology
The problem of middle proposition.
To achieve the above object, the present invention provides following technical solution：
A kind of digital printer ink supply constant negative pressure device is protected including vacuum pump, check valve, negative pressure holding meanss, two level
Protection unit, two level ink sac device, pump, print cartridge and nozzle, the vacuum pump, check valve, negative pressure holding meanss, second class protection dress
Put, two level ink sac device, pump and print cartridge are sequentially connected, and are also associated with nozzle on two level ink sac device, vacuum pump is that negative pressure is protected
It holds device and stable power source is provided, when check valve can prevent the vacuum pump to be stopped, external pressure enters negative pressure holding meanss
In, pump is that the ink in print cartridge is evacuated in two level ink sac device, and two level ink sac device is used to give nozzle ink supply, second class protection
Device can prevent some hole position liquid level sensor inside two level ink sac device from breaking down so that ink flows into negative pressure and keeps dress
The second barrier put；The negative pressure holding meanss include negative pressure head cover, negative pressure cylinder and negative pressure bottom cover, on the negative pressure head cover
Embedded to be equipped with B/P EGR Back Pressure Transducer EGR, B/P EGR Back Pressure Transducer EGR is used to detect the device of negative pressure holding meanss internal pressure, negative pressure head cover top
Portion is additionally provided with several groups of gas-tpe fittings, passes through gas-tpe fitting phase between vacuum pump and two level ink sac device and negative pressure holding meanss
Even, guide post is additionally provided between negative pressure head cover and negative pressure bottom cover, the lower end of guide post is fixedly connected with spring, lower spring end by baffle ring
Briquetting is fixedly connected with, briquetting is used to offset most pressure, the briquetting lower end that the internal negative pressure of negative pressure holding meanss generates
Equipped with diaphragm, diaphragm is fixedly mounted on negative pressure bottom cover, and diaphragm changes for sensing negative pressure holding meanss internal volume.
As further embodiment of the present invention：Sealing ring A is equipped between the negative pressure head cover and negative pressure cylinder.
As further scheme of the invention：Sealing ring B is equipped between the negative pressure cylinder and negative pressure bottom cover.
Compared with prior art, the beneficial effects of the invention are as follows：The present invention is supported by increasing briquetting by the gravity of briquetting
The pressure for the negative pressure that disappears reduces the rigidity of spring, in the case where ensureing that pressure is constant, provides more air variable quantities, increases
The stability of negative pressure system is added.And reduce the volume of negative pressure holding meanss.
Description of the drawings
Fig. 1 is a kind of structure diagram of digital printer ink supply constant negative pressure device entirety.
Fig. 2 is a kind of structure diagram of negative pressure holding meanss in digital printer ink supply constant negative pressure device.
Fig. 3 is structure diagram when negative pressure holding meanss are installed in a kind of digital printer ink supply constant negative pressure device.
Fig. 4 is structure diagram when negative pressure holding meanss work in a kind of digital printer ink supply constant negative pressure device.
In figure, 1- vacuum pumps, 2- check valves, 3- negative pressure holding meanss, 4- secondary protection devices, 5- two level ink sacs device,
6- pumps, 7- print cartridges, 8- nozzles, 301- B/P EGR Back Pressure Transducer EGRs, 302- gas-tpe fittings, 303- negative pressure head cover, 304- sealing rings A,
305- guide posts, 306- negative pressure cylinders, 307- baffle rings, 308- springs, 309- briquettings, 310- diaphragms, 311- sealing ring B, 312- negative pressure
Bottom cover,
Specific embodiment
The technical solution of this patent is described in more detail With reference to embodiment.
- 4 are please referred to Fig.1, a kind of digital printer ink supply constant negative pressure device is protected including vacuum pump 1, check valve 2, negative pressure
Device 3, secondary protection device 4, two level ink sac device 5, pump 6, print cartridge 7 and nozzle 8 are held, the vacuum pump 1, is born check valve 2
Pressure retaining device 3, secondary protection device 4, two level ink sac device 5, pump 6 and print cartridge 7 are sequentially connected, on two level ink sac device 5
Nozzle 8 is also associated with, vacuum pump 1 provides stable power source for negative pressure holding meanss 3, and check valve 2 can prevent vacuum pump 1 from stopping
During work, external pressure enters in negative pressure holding meanss 3, and pump 6 is that the ink in print cartridge 7 is evacuated in two level ink sac device 5,
For two level ink sac device 5 for giving nozzle 8 ink supply, secondary protection device 4 can prevent some hole position liquid inside two level ink sac device 5
Level sensor breaks down so that ink flows into the second barrier of negative pressure holding meanss 3；It is wrapped in the negative pressure holding meanss 3
Negative pressure head cover 303, negative pressure cylinder 306 and negative pressure bottom cover 312 are included, sealing ring is equipped between negative pressure head cover 303 and negative pressure cylinder 306
A304 is played between negative pressure cylinder 306 and negative pressure bottom cover 312 equipped with sealing ring B311, sealing ring A304 and sealing ring B311 close
Envelope acts on, and embedded on the negative pressure head cover 303 to be equipped with B/P EGR Back Pressure Transducer EGR 301, B/P EGR Back Pressure Transducer EGR 301 keeps for detecting negative pressure
The device of 3 internal pressure of device, 303 top of negative pressure head cover are additionally provided with several groups of gas-tpe fittings 302, vacuum pump 1 and two level ink sac
It is connected between device 5 and negative pressure holding meanss 3 by gas-tpe fitting 302, is also set between negative pressure head cover 303 and negative pressure bottom cover 312
There is guide post 305, the lower end of guide post 305 is fixedly connected with spring 308 by baffle ring 307, and 308 lower end of spring is fixedly connected with briquetting
309, briquetting 309 is used to offset most pressure of the internal negative pressure generation of negative pressure holding meanss 3,309 lower end of briquetting is equipped with
Diaphragm 310, diaphragm 310 are fixedly mounted on negative pressure bottom cover 312, and diaphragm 310 becomes for sensing 3 internal volume of negative pressure holding meanss
Change.
The present invention operation principle be：During booting, vacuum pump 1 is started to work, and negative pressure holding meanss 3, second class protection are filled
The air put in 4, two level ink sac device 5 extracts, and diaphragm 310 starts indent, while holds up briquetting 309 and spring 308, entire to supply
A negative pressure system is formed inside ink system, B/P EGR Back Pressure Transducer EGR 301, which changes internal pressure, to be exported by voltage change to PLC,
When PLC detects that 3 internal negative pressure of negative pressure holding meanss reaches given maximum value, vacuum pump 1 is stopped.
When digital printer starts printing work, 5 internal ink volume change of two level ink sac device occurs with when working
Gas infiltration and the Minute pores that bring of when 6 pumping ink of vacuum pump, can internal negative pressure be changed, at the same in order to weaken because
For the negative pressure variation brought of appeal reason, the picking-up briquetting 309 of diaphragm 310 inside negative pressure holding meanss 3 is fallen after rise, and spring 308 returns
Bullet, by changing the internal volume of whole device, to maintain the internal negative pressure of whole system, when the negative pressure of whole device drops to
During given minimum value, the task again of vacuum pump 1.
Negative pressure holding meanss 3 reduce the rigidity of spring 308 by increasing briquetting 309；Negative pressure holding meanss 3 are working
When, diaphragm 310 is by upward pulling force PA (P is negative pressure system internal negative pressure, A is diaphragm forced area), while by downward
Power Mg+kX (M be briquetting 309 weight, k be spring 308 rigidity, x be spring flexible value), i.e. PA=Mg+kX is being beaten
The sum of gravity of the size of print process negative pressure suffered by ink and the power needed for formation meniscus, but in order to stablize printing,
Changing value and very little；Further according to gas and the formula PV=nRT of pressure, when gas infiltration occurs in entire ink feeding system, negative pressure
The volume that internal system can change is bigger, and negative pressure is more stable；Therefore apparatus of the present invention go to offset big portion by the gravity of briquetting 309
Divide pressure caused by negative pressure so that the smaller that the rigidity of spring 308 is done.
The better embodiment of this patent is explained in detail above, but this patent is not limited to above-mentioned embodiment party
Formula in the knowledge that those skilled in the art has, can make change under the premise of this patent objective is not departed from
Change.
Claims (3)
1. a kind of digital printer ink supply constant negative pressure device, including vacuum pump (1), check valve (2), negative pressure holding meanss (3),
Secondary protection device (4), two level ink sac device (5), pump (6), print cartridge (7) and nozzle (8), it is characterised in that：The vacuum
Pump (1), check valve (2), negative pressure holding meanss (3), secondary protection device (4), two level ink sac device (5), pump (6) and print cartridge
(7) it is sequentially connected, nozzle (8) is also associated on two level ink sac device (5)；The negative pressure holding meanss (3) include negative pressure top
(303), negative pressure cylinder (306) and negative pressure bottom cover (312) are covered, is embedded on the negative pressure head cover (303) and B/P EGR Back Pressure Transducer EGR is installed
(301), be additionally provided at the top of negative pressure head cover (303) several groups of gas-tpe fittings (302), vacuum pump (1) and two level ink sac device (5) and
It is connected between negative pressure holding meanss (3) by gas-tpe fitting (302), is also set between negative pressure head cover (303) and negative pressure bottom cover (312)
There is guide post (305), the lower end of guide post (305) is fixedly connected with spring (308) by baffle ring (307), and spring (308) lower end is fixed
Briquetting (309) is connected with, briquetting (309) lower end is equipped with diaphragm (310), and diaphragm (310) is fixedly mounted on negative pressure bottom cover (312)
On.
2. a kind of digital printer ink supply constant negative pressure device according to claim 1, it is characterised in that：The negative pressure top
It covers and sealing ring A (304) is equipped between (303) and negative pressure cylinder (306).
3. a kind of digital printer ink supply constant negative pressure device according to claim 1, it is characterised in that：The negative pressure cylinder
(306) sealing ring B (311) is equipped between negative pressure bottom cover (312).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711429474.8A CN108162601B (en) | 2017-12-26 | 2017-12-26 | Ink supply constant negative pressure device of digital printer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711429474.8A CN108162601B (en) | 2017-12-26 | 2017-12-26 | Ink supply constant negative pressure device of digital printer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108162601A true CN108162601A (en) | 2018-06-15 |
| CN108162601B CN108162601B (en) | 2023-10-20 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711429474.8A Active CN108162601B (en) | 2017-12-26 | 2017-12-26 | Ink supply constant negative pressure device of digital printer |
Country Status (1)
| Country | Link |
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| CN (1) | CN108162601B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109334238A (en) * | 2018-10-30 | 2019-02-15 | 青岛蓝谷川上工业科技有限公司 | A kind of intaglio printing ink-jet digital printer |
| CN111409366A (en) * | 2020-04-24 | 2020-07-14 | 厦门墨逦标识科技有限公司 | Automatic ink supply adjusting system and negative pressure adjusting method for vacuum negative pressure of printing head |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109334238A (en) * | 2018-10-30 | 2019-02-15 | 青岛蓝谷川上工业科技有限公司 | A kind of intaglio printing ink-jet digital printer |
| CN111409366A (en) * | 2020-04-24 | 2020-07-14 | 厦门墨逦标识科技有限公司 | Automatic ink supply adjusting system and negative pressure adjusting method for vacuum negative pressure of printing head |
| CN111409366B (en) * | 2020-04-24 | 2023-12-22 | 广州番麦光电仪器有限公司 | Automatic regulating ink supply system and negative pressure regulating method for vacuum negative pressure of printing head |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108162601B (en) | 2023-10-20 |
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| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: No. 101, No. 7, Fengshun Road, Tongxin Community, Baolong Street, Longgang District, Shenzhen City, Guangdong Province, 518000 Applicant after: Shenzhen Wande Digital Technology Co.,Ltd. Address before: 518000 No.5 Fumin Road, Fumin Industrial Zone, Pinghu street, Longgang District, Shenzhen City, Guangdong Province Applicant before: SHENZHEN WONDER PRINTING SYSTEM Co.,Ltd. |
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