CN111761938B - Ink supply device of industrial digital printer - Google Patents
Ink supply device of industrial digital printer Download PDFInfo
- Publication number
- CN111761938B CN111761938B CN202010658646.4A CN202010658646A CN111761938B CN 111761938 B CN111761938 B CN 111761938B CN 202010658646 A CN202010658646 A CN 202010658646A CN 111761938 B CN111761938 B CN 111761938B
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- Prior art keywords
- ink
- ink supply
- liquid level
- path
- negative pressure
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- 239000007921 spray Substances 0.000 claims abstract description 38
- 238000005086 pumping Methods 0.000 claims abstract description 9
- 238000001914 filtration Methods 0.000 claims abstract description 5
- 239000007788 liquid Substances 0.000 claims description 51
- 210000004072 lung Anatomy 0.000 claims description 17
- 238000007872 degassing Methods 0.000 claims description 12
- 238000004891 communication Methods 0.000 claims description 8
- 238000001179 sorption measurement Methods 0.000 claims description 6
- 230000002572 peristaltic effect Effects 0.000 claims description 5
- 238000005273 aeration Methods 0.000 claims description 3
- 238000009825 accumulation Methods 0.000 abstract description 3
- 238000007639 printing Methods 0.000 abstract description 3
- 238000011084 recovery Methods 0.000 abstract description 3
- 238000004062 sedimentation Methods 0.000 abstract description 2
- 239000000976 ink Substances 0.000 description 161
- 238000001556 precipitation Methods 0.000 description 5
- 239000012535 impurity Substances 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 239000002244 precipitate Substances 0.000 description 2
- 239000013049 sediment Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Images
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
-
- 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
- B41J2/17563—Ink filters
-
- 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
- B41J2/18—Ink recirculation systems
-
- 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
- B41J2/19—Ink jet characterised by ink handling for removing air bubbles
Abstract
The invention is suitable for the technical field of printer ink supply devices, and provides an ink supply device of an industrial digital printer, which comprises a spray head; the active ink supply path with the second-stage filtration is arranged and used for supplying ink to the nozzle; an internal circulation ink path for removing air bubbles in the ink supplied to the head; and is used for preventing the ink from flowing back into the spray head through the internal circulation ink path; and the external circulation ink path is used for pumping the redundant ink back into the active ink supply ink path. The ink supply device provided by the invention has the advantages that the flowing speed of ink is accelerated, the phenomenon of air accumulation of a filter is solved, the possibility of ink sedimentation is reduced, and the ink path is prevented from being obstructed; the traditional two-stage ink box is cancelled, the risk of the broken line of the spray head is reduced, the ink-jet smoothness is improved, the backflow problem can be quickly processed when the ink backflow occurs, and the printing recovery time of the printer is greatly shortened.
Description
Technical Field
The invention belongs to the technical field of printer ink supply devices, and particularly relates to an ink supply device of an industrial digital printer.
Background
At present, industrial digital printers on the market mostly adopt a two-stage ink box mode to supply ink, and a filter is additionally arranged below the two-stage ink box for preventing impurities by some manufacturers, but the filter is easy to accumulate bubbles, so that an ink path is not smooth, and a broken line is caused. In addition, some manufacturers remove the filter and directly connect the nozzle, which easily causes the nozzle to enter impurities and affects the service life of the nozzle. Some manufacturers on the market have introduced negative pressure difference backflow and ink box height difference backflow modes for preventing precipitation. However, the method has the defect of slow circulation speed, and may require 4-5 hours to circulate 1 liter of ink, so that the effect on the anti-precipitation function of the ink is not ideal.
Disclosure of Invention
An object of an embodiment of the present invention is to provide an ink supply device for an industrial digital printer, which aims to solve the problems mentioned in the background art.
The embodiment of the invention is realized in such a way that the ink supply device of the industrial digital printer comprises a spray head, and the ink supply device further comprises:
the active ink supply path with the secondary filtration is arranged and used for supplying ink to the spray head;
an internal circulation ink path for removing air bubbles in the ink supplied to the head by negative pressure adsorption; and is used for preventing the ink from flowing back into the nozzle through the internal circulation ink path in a positive pressure extruding mode;
and the external circulation ink path is used for enabling the ink exceeding the liquid level limit of the spray head to be pumped back into the active ink supply path.
Preferably, the active ink supply path includes:
an ink tank for storing ink;
an ink supply pump; the ink supply pump is communicated with the ink barrel;
a main filter; the main filter is communicated with the ink supply pump;
a one-way valve; the one-way valve is communicated with the main filter;
degassing the lung; the de-gassed lung is in communication with the one-way valve;
a pre-head filter; the pre-head filter is in communication with the de-aeration lung; the pre-head filter is communicated with the spray head.
Preferably, the ink supply pump adopts a peristaltic pump.
Preferably, the internal circulation ink path includes:
a first non-contact liquid level sensor; the first non-contact liquid level sensor is arranged on one side of the spray head;
a second non-contact liquid level sensor; the second non-contact liquid level sensor is arranged on one side of the spray head, which is far away from the first non-contact liquid level sensor;
a negative pressure box; the negative pressure box is electrically connected with the first non-contact liquid level sensor and the second non-contact liquid level sensor; the negative pressure box is communicated with the spray head;
and the power assembly is used for providing negative pressure and positive pressure for the negative pressure box.
Preferably, the height of the second non-contact liquid level sensor is the liquid level limit of the spray head.
Preferably, the power assembly comprises:
a two-way solenoid valve; the two-way electromagnetic valve is communicated with the negative pressure box;
a positive pressure generator; the positive pressure generator is communicated with the two-way electromagnetic valve;
a negative pressure generator; the negative pressure generator is communicated with the two-way electromagnetic valve.
Preferably, the outer circulation ink path includes:
a back-pumping pump; the back-pumping pump is communicated with the spray head and the ink barrel.
According to the ink supply device of the industrial digital printer, the active ink supply path with the secondary filtration is arranged, the peristaltic pump is adopted to provide the power for the ink to flow, and the pre-head filter is arranged behind the degassing lung, so that the flow speed of the ink is accelerated, the problem of filter gas accumulation is solved, the possibility of ink precipitation is reduced, and the problem of unsmooth ink flow caused by the fact that the filter is arranged in front of the spray head is solved; by arranging the internal circulation ink path, the traditional secondary ink box is cancelled, so that ink without bubbles flows into the nozzle, the risk of disconnection of the nozzle is reduced, the ink jet smoothness is improved, the backflow problem can be quickly solved when the ink backflow occurs, and the printing recovery time of the printer is greatly shortened; through setting up the extrinsic cycle ink route for in excessive ink pumpback into the china ink bucket, formed a rapid and stable ink extrinsic cycle system.
Drawings
Fig. 1 is a schematic structural diagram of an ink supply device of an industrial digital printer according to an embodiment of the present invention.
In the drawings: 1. an ink tank; 2. an ink supply pump; 3. a main filter; 4. a one-way valve; 5. degassing the lung; 6. a pre-head filter; 7. a first non-contact liquid level sensor; 8. a spray head; 9. a second non-contact liquid level sensor; 10. a negative pressure box; 11. a back-pumping pump; 12. a two-way solenoid valve; 13. a positive pressure generator; 14. a negative pressure generator.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Specific implementations of the present invention are described in detail below with reference to specific embodiments.
As shown in fig. 1, an ink supply device for an industrial digital printer according to an embodiment of the present invention includes a nozzle 8, and the ink supply device further includes:
an active ink supply path with two-stage filtration is arranged and used for supplying ink to the spray head 8;
an internal circulation ink path for removing air bubbles in the ink supplied to the head 8 by negative pressure adsorption; and is used for preventing the ink from flowing back into the nozzle 8 through the internal circulation ink path in a positive pressure extruding mode;
and the external circulation ink path is used for pumping the ink exceeding the liquid level limit of the spray head 8 back into the active ink supply path.
In practical application, the active ink supply path is communicated with the spray head 8 through an ink supply pipeline, the spray head 8 is communicated with the internal circulation path and the external circulation path through the ink supply pipeline, and the external circulation path is communicated with the active ink supply path through the ink supply pipeline. The active ink supply path supplies ink to the nozzle 8 in an active ink supply mode, and the supplied ink is filtered twice in the active ink supply path; then the internal circulation ink path removes air bubbles in the ink flowing into the nozzle 8 in a negative pressure adsorption mode, and when unexpected air bubbles (ink) flow through the internal circulation ink path and then flow into the nozzle 8, the air bubbles (ink) can be folded back from the inflow path in a positive pressure extrusion mode; when the ink flowing through the nozzle 8 is excessive, the excessive ink can be pumped back into the active ink supply path through the external circulation path. The ink supply device provided by the embodiment of the invention accelerates the flowing speed of ink, solves the problem of air accumulation of a filter, reduces the possibility of ink sedimentation and prevents an ink path from being unsmooth; the traditional two-stage ink box is cancelled, the risk of 8 broken lines of the spray head is reduced, the ink-jet smoothness is improved, the backflow problem can be quickly processed when ink backflow occurs, and the printing recovery time of the printer is greatly shortened.
As shown in fig. 1, as a preferred embodiment of the present invention, the active ink supply path includes:
an ink tank 1 for storing ink;
an ink supply pump 2; the ink supply pump 2 is communicated with the ink barrel 1;
a main filter 3; the main filter 3 is communicated with the ink supply pump 2;
a check valve 4; the one-way valve 4 is communicated with the main filter 3;
degassing the lung 5; the degassing lung 5 is in communication with the one-way valve 4;
a pre-head filter 6; the pre-head filter 6 is in communication with the de-aeration lung 5; the pre-head filter 6 is in communication with the spray head 8.
Specifically, the ink barrel 1 is communicated with an ink supply pump 2 through an ink supply pipeline, the ink supply pump 2 is communicated with a main filter 3 through the ink supply pipeline, the main filter 3 is communicated with a one-way valve 4 through the ink supply pipeline, the one-way valve 4 is communicated with a degassing lung 5 through the ink supply pipeline, and the degassing lung 5 is communicated with a pre-head filter 6 through the ink supply pipeline. Generally, after the degassing lung 5 is used for one year, relatively more precipitates are formed on the membrane filaments in the degassing lung 5, and the precipitates easily flow to the filter net of the nozzle 8 along with the ink path, so that the nozzle 8 is blocked, and the service life is shortened. Therefore, the pre-head filter 6 is additionally arranged behind the degassing lung 5, and ink sediment accumulated on the membrane wires can be effectively prevented from entering the spray head 8.
As a preferred embodiment of the present invention, the ink supply pump 2 is a peristaltic pump.
Specifically, the peristaltic pump can actively supply ink to the nozzle 8, so that the flow speed of the ink is increased, and the possibility of ink precipitation is reduced.
As shown in fig. 1, as a preferred embodiment of the present invention, the internal circulation ink path includes:
a first non-contact level sensor 7; the first non-contact liquid level sensor 7 is arranged on one side of the spray head 8;
a second non-contact level sensor 9; the second non-contact liquid level sensor 9 is arranged on one side of the spray head 8 far away from the first non-contact liquid level sensor 7;
a negative pressure case 10; the negative pressure box 10 is electrically connected with the first non-contact liquid level sensor 7 and the second non-contact liquid level sensor 9; the negative pressure box 10 is communicated with the spray head 8;
and the power assembly is used for providing negative pressure and positive pressure for the negative pressure box 10.
Specifically, the negative pressure box 10 is communicated with the spray head 8 through two ink supply pipelines; the first non-contact liquid level sensor 7 is also called as an ink supply non-contact liquid level sensor and is arranged on one of the ink supply pipelines; the second non-contact liquid level sensor 9, also called a withdrawal non-contact liquid level sensor, is arranged on the other ink supply pipe. The ink filtered by the pre-head filter 6 flows through the head 8. The ink from the pre-head filter 6 contains bubbles, the bubbles are sucked into an ink supply pipeline provided with the first non-contact liquid level sensor 7 by the negative pressure box 10 in a negative pressure adsorption mode, and the ink without bubbles flows into the spray head 8, so that the risk of line breakage of the spray head 8 is reduced, and the ink jet fluency is improved. Due to the separation of the air bubbles and the ink, when unexpected air bubbles (ink) flow back into the negative pressure box 10, the air bubbles (ink) can be quickly pressed out through positive pressure, and the backflow problem is quickly solved. Under the traditional situation, the pre-head filter 6 is generally arranged below the secondary ink box and flows into the spray head 8 in a self-weight mode of ink in the ink box, and once fine bubbles appear in the filter, ink is not smoothly sprayed on an ink path of the color, and the ink breaking situation often appears. The embodiment of the invention adopts a non-contact liquid level sensor, utilizes the principle of a U-shaped pipe, simultaneously removes a secondary ink box, achieves the function of rapid circulation (1 liter of ink can be circulated in 0.5-1 hour, the speed difference depends on the viscosity of the ink), and simultaneously reduces the sediment of the former secondary ink box from entering the spray head 8.
As shown in the attached FIG. 1, as a preferred embodiment of the present invention, the height of the second non-contact liquid level sensor 9 is the liquid level limit of the spray head.
Specifically, when the height of the ink exceeds the second non-contact liquid level sensor 9, the external circulation ink path draws the excess ink back into the ink tank 1.
As shown in fig. 1, as a preferred embodiment of the present invention, the power assembly includes:
a two-way electromagnetic valve 12; the two-way electromagnetic valve 12 is communicated with the negative pressure box 10;
a positive pressure generator 13; the positive pressure generator 13 is communicated with the two-way electromagnetic valve 12;
a negative pressure generator 14; the negative pressure generator 14 is in communication with the two-way solenoid valve 12.
Specifically, when the negative pressure cartridge 10 needs to remove air bubbles in the ink supplied to the ejection head 8 by means of negative pressure adsorption, negative pressure is supplied to the negative pressure cartridge 10 by the negative pressure generator 14; when the negative pressure cartridge 10 needs to prevent ink from flowing back into the ejection head 8 through the negative pressure cartridge 10 by means of positive pressure pressing, positive pressure is supplied to the negative pressure cartridge 10 by the positive pressure generator 13.
As shown in fig. 1, as a preferred embodiment of the present invention, the outer circulation ink path includes:
a back-suction pump 11; the suction pump 11 is communicated with the spray head 8 and the ink barrel 1.
Specifically, the suction pump 11 is communicated with the nozzle 8 and the ink tank 1 through an ink supply pipe. When the ink is lower than the position of the first non-contact liquid level sensor 7, the ink supply pump 2 operates so that the liquid level of the ink is maintained above the first non-contact liquid level sensor 7. Because the first non-contact liquid level sensor 7 and the second non-contact liquid level sensor 9 have a height difference, the ink can continuously flow from the end with the high liquid level of the first non-contact liquid level sensor 7 to the end with the low liquid level of the second non-contact liquid level sensor 9. When the ink liquid level reaches the second non-contact liquid level sensor 9, the back-pumping pump 11 starts to work, and the ink exceeding the second non-contact liquid level sensor 9 is back pumped to the ink barrel 1, so that a fast and stable ink external circulation system is formed.
In summary, when the ink supply device operates, the ink supply pump 2 pumps the ink out of the ink barrel 1, the ink flows through the main filter 3, the one-way valve 4, the degassing lung 5 and the pre-head filter 6 in sequence, and the ink is filtered twice through the main filter 3 and the pre-head filter 6, so that the condition that the nozzle 8 is blocked due to ink precipitation is avoided; when unexpected bubbles (ink) flow back into the negative pressure box 10, positive pressure is provided for the negative pressure box 10 through the positive pressure generator 13, the bubbles (ink) flowing back into the negative pressure box 10 are pressed out, and the backflow problem is rapidly solved; when the liquid level of the ink reaches the second non-contact liquid level sensor 9, the pumpback pump 11 starts to work to pumpback the excessive ink into the ink barrel 1, so that a fast and stable ink external circulation system is formed.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (6)
1. The utility model provides an ink supply unit of industry digital printer, includes the shower nozzle, its characterized in that, ink supply unit still includes:
the active ink supply path with the secondary filtration is arranged and used for supplying ink to the spray head;
an internal circulation ink path for removing air bubbles in the ink supplied to the head by negative pressure adsorption; and is used for preventing the ink from flowing back into the nozzle through the internal circulation ink path in a positive pressure extruding mode;
the external circulation ink path is used for pumping the ink exceeding the liquid level limit of the spray head back into the active ink supply ink path;
the internal circulation ink path includes:
a first non-contact liquid level sensor; the first non-contact liquid level sensor is arranged on one side of the spray head;
a second non-contact liquid level sensor; the second non-contact liquid level sensor is arranged on one side of the spray head, which is far away from the first non-contact liquid level sensor;
a negative pressure box; the negative pressure box is electrically connected with the first non-contact liquid level sensor and the second non-contact liquid level sensor; the negative pressure box is communicated with the spray head;
and the power assembly is used for providing negative pressure and positive pressure for the negative pressure box.
2. The ink supply device of industrial digital printer according to claim 1, wherein said active ink supply path comprises:
an ink tank for storing ink;
an ink supply pump; the ink supply pump is communicated with the ink barrel;
a main filter; the main filter is communicated with the ink supply pump;
a one-way valve; the one-way valve is communicated with the main filter;
degassing the lung; the de-gassed lung is in communication with the one-way valve;
a pre-head filter; the pre-head filter is in communication with the de-aeration lung; the pre-head filter is communicated with the spray head.
3. The ink supply device of industrial digital printer according to claim 2, characterized in that the ink supply pump is a peristaltic pump.
4. The ink supply device of industrial digital printer according to claim 1, wherein the height of the second non-contact liquid level sensor is the liquid level limit of the nozzle.
5. An ink supply for an industrial digital printer as claimed in claim 1, wherein said power assembly includes:
a two-way solenoid valve; the two-way electromagnetic valve is communicated with the negative pressure box;
a positive pressure generator; the positive pressure generator is communicated with the two-way electromagnetic valve;
a negative pressure generator; the negative pressure generator is communicated with the two-way electromagnetic valve.
6. The ink supply device for industrial digital printer according to claim 2, wherein said external circulation ink path comprises:
a back-pumping pump; the back-pumping pump is communicated with the spray head and the ink barrel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010658646.4A CN111761938B (en) | 2020-07-09 | 2020-07-09 | Ink supply device of industrial digital printer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010658646.4A CN111761938B (en) | 2020-07-09 | 2020-07-09 | Ink supply device of industrial digital printer |
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| Publication Number | Publication Date |
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| CN111761938A CN111761938A (en) | 2020-10-13 |
| CN111761938B true CN111761938B (en) | 2021-02-26 |
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| CN202010658646.4A Active CN111761938B (en) | 2020-07-09 | 2020-07-09 | Ink supply device of industrial digital printer |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113291060A (en) * | 2021-04-01 | 2021-08-24 | 深圳传顺科技有限公司 | Ink supply system and ink supply method for printer |
| CN113978129B (en) * | 2021-09-22 | 2023-10-03 | 无锡普瑞特喷印科技有限公司 | Printer ink path system with stable ink circulation |
| CN115402010B (en) * | 2022-11-01 | 2023-03-03 | 苏州优备精密智能装备股份有限公司 | Ink-jet printing ink supply system for realizing stable ink supply and ink supply recovery method thereof |
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| CN111070900A (en) * | 2020-01-17 | 2020-04-28 | 福州大学 | Piezoelectric ink-jet printing device for removing printing ink bubbles and control method thereof |
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| JPS6480544A (en) * | 1987-09-24 | 1989-03-27 | Fujitsu Ltd | Purge mechanism |
| CN101746126A (en) * | 2008-12-05 | 2010-06-23 | 佳能株式会社 | Recording device, recording system and liquid filling method |
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| CN111761938A (en) | 2020-10-13 |
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Denomination of invention: An ink supply device for industrial digital printer Effective date of registration: 20230112 Granted publication date: 20210226 Pledgee: Shanghai Pudong Development Bank Co.,Ltd. Shenzhen Branch Pledgor: SHENZHEN TEXTALK GRAPHIC TECHNOLOGY Co.,Ltd. Registration number: Y2023980031102 |
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Granted publication date: 20210226 Pledgee: Shanghai Pudong Development Bank Co.,Ltd. Shenzhen Branch Pledgor: SHENZHEN TEXTALK GRAPHIC TECHNOLOGY Co.,Ltd. Registration number: Y2023980031102 |
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