CN214001017U - Double-negative-pressure ink circulation printer - Google Patents
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- CN214001017U CN214001017U CN202022903868.6U CN202022903868U CN214001017U CN 214001017 U CN214001017 U CN 214001017U CN 202022903868 U CN202022903868 U CN 202022903868U CN 214001017 U CN214001017 U CN 214001017U
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Abstract
The utility model discloses a double negative pressure ink circulation printer, which comprises a first-level ink barrel, a second-level ink box, a spray head and a circulation ink box, wherein a first ink conveying mechanism for conveying ink to the second-level ink box is connected between the first-level ink barrel and the second-level ink box, and a second ink conveying mechanism for conveying ink to the first-level ink barrel is connected between the circulation ink box and the first-level ink barrel; the second-stage ink box is arranged above the spray head and connected with the first negative pressure mechanism, and the circulating ink box is connected with the second negative pressure mechanism used for sucking ink at the spray head. The double-negative-pressure ink circulation printer can reduce the phenomenon of broken needles of the spray head and ensure the normal operation of the printer.
Description
Technical Field
The utility model relates to a printer field, in particular to two negative pressure ink circulation printers.
Background
In the application of a digital printer, ink can be deposited, and the ink can cause a plug after being stored for a long time or accumulated for a long time, so that the spray head can be seriously scrapped. There is also a case where the ink is not used for a short time (for example, for one night or one or two days), bubbles are precipitated from the ink due to external temperature change, and if the ink is not circulated, the ink is broken. The broken needle refers to that when air exists in the ink in the nozzle or the dissolved oxygen is too high, the nozzle can generate partial air instead of ink drops which are sprayed from the nozzle, and the field is called broken needle. Therefore, the ink must be circulated to reduce settling and to discharge air bubbles. In the prior art, an ink supply pump is adopted by a printer to pump ink in an ink box I to be conveyed to an ink box II, the ink is conveyed to a two-way nozzle by the ink box to be printed, the ink at the nozzle is conveyed to the ink box II through another ink supply pump, the ink supply pump has large disturbance to the nozzle, and the nozzle is easy to generate bubbles to break a needle.
Therefore, how to avoid the broken pin of the printer becomes a technical problem to be solved by those skilled in the art.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a two negative pressure ink circulation printers, this printer ink circulation is stable, can reduce the disconnected needle phenomenon of shower nozzle, ensures printer normal operating.
In order to achieve the purpose, the utility model provides a double negative pressure ink circulation printer, including first-level ink barrel, second grade ink horn, shower nozzle and circulation ink horn, be connected with the first inking mechanism to the inking of second grade ink horn between first-level ink barrel and the second grade ink horn, be connected with the second inking mechanism to the inking of first-level ink barrel between the circulation ink horn and the first-level ink barrel;
the second-stage ink box is arranged above the spray head and connected with the first negative pressure mechanism, and the circulating ink box is connected with the second negative pressure mechanism used for sucking ink at the spray head.
Optionally, the first negative pressure mechanism includes a first negative pressure source communicated with the secondary ink cartridge, a first pressure regulating valve connected between the first negative pressure source and the secondary ink cartridge, and a first negative pressure gauge.
Optionally, the second negative pressure mechanism includes a second negative pressure source communicated with the circulation ink tank, a second pressure regulating valve connected between the second negative pressure source and the circulation ink tank, and a second negative pressure gauge.
Optionally, the first inking mechanism and the second inking mechanism are both ink supply pumps.
Optionally, a first liquid level sensor is arranged in the secondary ink box, and the first liquid level sensor is used for controlling the first inking mechanism to operate and maintaining the liquid level of the secondary ink box within a preset range.
Optionally, a second liquid level sensor is arranged in the circulating ink box, and the second liquid level sensor is used for controlling the second inking mechanism to operate and maintaining the liquid level of the circulating ink box within a preset range.
Optionally, the secondary ink cartridge is disposed higher than the primary ink tank, and a check valve is connected between the secondary ink cartridge and the primary ink tank.
Optionally, the primary ink barrel is provided with a liquid level alarm mechanism, and when the liquid level in the primary ink barrel is lower than a warning line, the liquid level alarm mechanism gives an alarm.
Optionally, a filtering device is disposed between the first inking mechanism and the second-stage ink cartridge, and a degassing device is disposed between the second-stage ink cartridge and the nozzle.
Optionally, a solenoid valve is arranged between the circulating ink box and the primary ink barrel, and the solenoid valve is closed when the second inking mechanism stops operating.
For above-mentioned background art, the utility model provides a two negative pressure ink circulation printer's ink circulation route is: the first-level ink barrel, the first inking mechanism, the second-level ink box, the spray head, the circulating ink box, the second inking mechanism and the first-level ink barrel are stable and reliable in circulation. The secondary ink box is arranged above the spray head, the ink is conveyed to the spray head under the action of gravity for printing, the secondary ink box is provided with a first negative pressure mechanism, the gravity of the ink is balanced by the first negative pressure mechanism, and the speed of the ink flowing out of the spray head is adjusted; the first negative pressure mechanism and the second negative pressure mechanism can reduce bubbles in the secondary ink box and the circulating ink box and reduce bubbles in the circulating ink; the ink in the circulating ink box is conveyed to the first-stage ink barrel through the second ink conveying mechanism, and the disturbance of the second ink conveying mechanism to the spray head is relieved due to the arrangement of the circulating ink box.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic view of a dual negative pressure ink circulation printer according to an embodiment of the present invention.
Wherein:
1-first-stage ink barrel, 2-one-way valve, 3-first inking mechanism, 4-second-stage ink box, 41-first negative pressure source, 42-first pressure regulating valve, 43-first negative pressure meter, 44-first liquid level sensor, 5-filtering device, 6-degasser, 7-sprayer, 8-circulation ink box, 81-second negative pressure source, 82-second pressure regulating valve, 83-second negative pressure meter, 84-second liquid level sensor, 9-second inking mechanism and 10-electromagnetic valve.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In order to make the technical field of the present invention better understand, the present invention will be described in detail with reference to the accompanying drawings and the detailed description.
Referring to fig. 1, fig. 1 is a schematic view of a dual negative pressure ink circulation printer according to an embodiment of the present invention.
The utility model provides a two negative pressure ink circulation printers include one-level china ink bucket 1, second grade ink horn 4 and circulation ink horn 8, one-level china ink bucket 1 is as being the ink source, the ink is not enough, need guarantee the ink circulation of printer to the filling ink in the one-level china ink bucket 1, the ink in the one-level china ink bucket 1 is carried to second grade ink horn 4 through first inking mechanism 3, second grade ink horn 4 sets up the top at shower nozzle 7, the ink is carried to shower nozzle 7 under the action of gravity and is printed, the ink of shower nozzle 7 of flowing through is carried to circulation ink horn 8 under the effect of second negative pressure mechanism, then carry to one-level china ink bucket 1 by second inking mechanism 9.
The second-stage ink box 4 is provided with a first negative pressure mechanism, and the gravity of the ink is balanced by the first negative pressure mechanism, so that the flowing speed of the ink from the nozzle 7 is adjusted; the circulating ink box 8 is used for recovering the ink flowing through the nozzle 7, and the ink flowing through the nozzle 7 is stably drawn back to the circulating ink box 8 by means of the differential pressure generated by the second negative pressure mechanism, so that the disturbance to the work of the nozzle 7 is reduced. The ink in the circulating ink box 8 is conveyed to the primary ink barrel 1 through the second ink conveying mechanism 9, and the disturbance of the second ink conveying mechanism 9 to the spray head 7 is relieved by the arrangement of the circulating ink box 8. Even environmental problem changes, also can adjust the vacuum of first negative pressure mechanism and second negative pressure mechanism and satisfy the ink circulation requirement, and through negative pressure drive ink circulation, avoided the production of useless ink and bubble, the setting of first negative pressure mechanism and second negative pressure mechanism can in time be discharged the bubble in second grade ink horn 4 and the circulation ink horn 8, reduces the bubble in the circulation ink, avoids the broken needle of printer.
In the embodiment provided by the present invention, the first negative pressure mechanism includes a first negative pressure source 41 communicated with the second-stage ink cartridge 4 through a pipeline, and the first negative pressure source 41 can specifically adopt a vacuum pump. The pipeline is provided with a first pressure regulating valve 42 and a first negative pressure gauge 43, when the density of the ink changes due to the change of the ambient temperature, the speed of the ink flowing to the nozzle 7 can be regulated and controlled by adjusting the vacuum degree of the first negative pressure source 41 and the opening degree of the first pressure regulating valve 42, the vacuum degree of the secondary ink box 4 can be observed in real time by the arrangement of the first negative pressure gauge 43, and the first pressure regulating valve 42 adopts a precise pressure regulating valve and can regulate the pressure within the range of +/-0.1 KPa.
Correspondingly, the second negative pressure mechanism comprises a second negative pressure source 81 communicated with the circulating ink box 8 through a pipeline, the second negative pressure source 81 adopts a vacuum pump or other vacuum pumping equipment, a second pressure regulating valve 82 is arranged between the second negative pressure source 81 and the pipeline of the circulating ink box 8, and a second negative pressure gauge 83 is also arranged. The vacuum degree of the circulating ink box 8 can be adjusted by changing the vacuum degree of the second negative pressure source 81 and the opening degree of the second pressure regulating valve 82, the pressure difference between the circulating ink box 8 and the spray head 7 is changed, stable suction of the printed ink is realized, the work disturbance of the spray head 7 is avoided, and bubbles are prevented from being generated.
In the above embodiment, the first inking mechanism 3 and the second inking mechanism 9 both use ink supply pumps, the first inking mechanism 3 transfers the ink in the primary ink tank 1 to the secondary ink tank 4, and the first negative pressure mechanism is arranged to adjust the speed of the ink flowing to the nozzle 7, facilitate the escape of bubbles transferred to the secondary ink tank 4, and reduce the bubble content in the circulating ink. Because the installation position of the second ink box 4 in the printer is higher than the first ink barrel 1, in order to prevent the ink in the second ink box 4 from flowing back to the first ink barrel 1 when the first inking mechanism 3 is not in operation, a one-way valve 2 is also arranged between the first ink barrel 1 and the second ink box 4, and the one-way valve 2 only allows the ink in the first ink barrel 1 to flow to the second ink box 4 in one way. The check valve 2 may be specifically provided between the first inking mechanism 3 and the primary ink tank 1.
Preferably, in order to ensure the normal ink supply of the nozzle 7 during the ink circulation process, a first liquid level sensor 44 is further arranged in the secondary ink box 4, the first liquid level sensor 44 is used for detecting the liquid level in the secondary ink box 4 in real time and transmitting a liquid level signal to a control mechanism of the first ink conveying mechanism 3, the control mechanism controls the operation of the first ink conveying mechanism 3 according to the liquid level of the secondary ink box 4, the liquid level of the secondary ink box 4 is maintained within a preset range, and the normal ink supply and the stable ink supply speed of the nozzle 7 are ensured. Specifically, when the first liquid level sensor 44 detects that the liquid level of the secondary ink tank 4 is lower than the lowest value of the preset range, the first ink conveying mechanism 3 is controlled to start to operate, and the ink in the primary ink barrel 1 is conveyed to the secondary ink tank 4; when the liquid level in the secondary ink tank 4 rises and reaches the highest value of the preset range, the first liquid level sensor 44 controls the second inking mechanism 9 to stop running until the liquid level of the secondary ink tank 4 falls again.
The second liquid level sensor 84 is arranged in the circulating ink box 8, and the second liquid level sensor 84 is used for controlling the second inking mechanism 9 to maintain the liquid level in the circulating ink box 8 within a preset range, so that the circulating ink box 8 can stably suck the ink at the nozzle 7. Specifically, when the liquid level in the circulating ink tank 8 exceeds the highest value of the preset range, the second inking mechanism 9 starts to operate, the ink in the circulating ink tank 8 is conveyed to the primary ink tank 1, and when the liquid level in the circulating ink tank 8 falls below the lowest value of the preset range, the second inking mechanism 9 stops operating.
As the second negative pressure mechanism sucks the ink at the head 7, the liquid level in the circulating ink tank 8 rises again, and so on. An electromagnetic valve 10 is arranged between the circulating ink box 8 and the primary ink barrel 1, and the electromagnetic valve 10 is opened only when the second inking mechanism 9 operates; when the second inking mechanism 9 stops operating, the electromagnetic valve 10 is closed, which is beneficial to maintaining the vacuum degree in the circulating ink box 8 and keeping the stable suction of the ink at the nozzle 7, thereby reducing the energy consumption of the second negative pressure mechanism.
In the ink circulation process, inevitably produce useless ink and bubble, for guaranteeing the normal work of shower nozzle 7, the utility model provides a two negative pressure ink circulation printers still include filter equipment 5 and degasser 6. A filtering device 5 is arranged between the first inking mechanism 3 and the secondary ink box 4 to ensure the purity of the ink entering the secondary ink box 4; a filtering device 5 and a degassing device 6 are arranged between the secondary ink box 4 and the spray head 7, so that waste ink is prevented from blocking the spray head 7, and the phenomenon of needle breakage at the spray head 7 is reduced. The arrangement of the filtration device 5 and the degassing device 6 can be referred to the prior art.
Further, the primary ink tank 1 serves as an ink source, and as the number of times of circulation increases and ink is consumed, the liquid level in the primary ink tank 1 will inevitably decrease while the normal liquid levels of the secondary ink tank 4 and the circulation ink tank 8 are maintained, and the normal operation of the printer will be affected if the liquid level decreases below a warning line and ink is not replenished in time. This application still sets up liquid level alarm mechanism in one-level china ink bucket 1, and liquid level alarm mechanism includes third liquid level detector and the alarm module who is connected with third level sensor. Detect the liquid level of one-level china ink bucket 1 through third level sensor, send liquid level signal for alarm module when the liquid level is less than the warning liquid level, add black by alarm module suggestion, alarm module specifically can be the touch-control operating panel of printer, also can be for setting up the warning light in printer one side.
It is noted that, in this specification, relational terms such as first and second, and the like are used solely to distinguish one entity from another entity without necessarily requiring or implying any actual such relationship or order between such entities.
It is right above that the utility model provides a two negative pressure ink circulation printers introduce in detail. The principles and embodiments of the present invention have been explained herein using specific examples, and the above descriptions of the embodiments are only used to help understand the method and its core ideas of the present invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.
Claims (10)
1. A double negative pressure ink circulation printer is characterized by comprising a primary ink barrel (1), a secondary ink box (4), a spray head (7) and a circulation ink box (8), wherein a first ink conveying mechanism (3) for conveying ink to the secondary ink box (4) is connected between the primary ink barrel (1) and the secondary ink box (4), and a second ink conveying mechanism (9) for conveying ink to the primary ink barrel (1) is connected between the circulation ink box (8) and the primary ink barrel (1);
the secondary ink box (4) is arranged above the spray head (7), the secondary ink box (4) is connected with a first negative pressure mechanism, and the circulating ink box (8) is connected with a second negative pressure mechanism used for sucking ink at the spray head (7).
2. The printer according to claim 1, wherein the first negative pressure mechanism includes a first negative pressure source (41) communicating with the secondary ink tank (4), a first pressure regulating valve (42) connected between the first negative pressure source (41) and the secondary ink tank (4), and a first negative pressure gauge (43).
3. The printer of claim 2, wherein the second negative pressure mechanism comprises a second negative pressure source (81) communicating with the circulation tank (8), a second pressure regulating valve (82) connected between the second negative pressure source (81) and the circulation tank (8), and a second negative pressure gauge (83).
4. A dual negative pressure ink circulation printer according to claim 3, wherein the first inking mechanism (3) and the second inking mechanism (9) are both ink supply pumps.
5. The printer of claim 3, wherein a first level sensor (44) is provided in the secondary cartridge (4), the first level sensor (44) being configured to control the operation of the first inking mechanism (3) and to maintain the level of the secondary cartridge (4) within a predetermined range.
6. The printer of claim 3, wherein a second level sensor (84) is provided in the circulating ink tank (8), the second level sensor (84) being configured to control the operation of the second inking mechanism (9) and to maintain the level of the circulating ink tank (8) within a predetermined range.
7. The printer according to any one of claims 1 to 6, wherein the secondary ink tank (4) is arranged higher than the primary ink tank (1), and a check valve (2) is connected between the secondary ink tank (4) and the primary ink tank (1).
8. The printer of claim 7, wherein the primary ink tank (1) is provided with a liquid level alarm mechanism, and when the liquid level in the primary ink tank (1) is lower than a warning line, the liquid level alarm mechanism alarms.
9. The printer according to any of claims 1 to 6, wherein a filter device (5) is provided between the first inking unit (3) and the secondary ink container (4) and between the secondary ink container (4) and the spray head (7), and a degassing device (6) is provided between the secondary ink container (4) and the spray head (7).
10. The printer according to claim 9, wherein a solenoid valve (10) is provided between the circulating ink tank (8) and the primary ink tank (1), the solenoid valve (10) being closed when the second inking mechanism (9) stops operating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022903868.6U CN214001017U (en) | 2020-12-04 | 2020-12-04 | Double-negative-pressure ink circulation printer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022903868.6U CN214001017U (en) | 2020-12-04 | 2020-12-04 | Double-negative-pressure ink circulation printer |
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| Publication Number | Publication Date |
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| CN214001017U true CN214001017U (en) | 2021-08-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202022903868.6U Active CN214001017U (en) | 2020-12-04 | 2020-12-04 | Double-negative-pressure ink circulation printer |
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| CN (1) | CN214001017U (en) |
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- 2020-12-04 CN CN202022903868.6U patent/CN214001017U/en active Active
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