CN113910777B - Ink supply system of ink-jet printer - Google Patents
Ink supply system of ink-jet printer Download PDFInfo
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- CN113910777B CN113910777B CN202111122430.7A CN202111122430A CN113910777B CN 113910777 B CN113910777 B CN 113910777B CN 202111122430 A CN202111122430 A CN 202111122430A CN 113910777 B CN113910777 B CN 113910777B
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- 238000011010 flushing procedure Methods 0.000 claims abstract description 45
- 239000007921 spray Substances 0.000 claims abstract description 14
- 230000033001 locomotion Effects 0.000 claims description 13
- 238000010438 heat treatment Methods 0.000 claims description 9
- 230000002093 peripheral effect Effects 0.000 claims description 4
- 238000001914 filtration Methods 0.000 claims description 3
- 238000005381 potential energy Methods 0.000 claims description 3
- 230000008676 import Effects 0.000 claims description 2
- 239000000976 ink Substances 0.000 description 201
- 238000000034 method Methods 0.000 description 12
- 230000008569 process Effects 0.000 description 11
- 238000007639 printing Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 7
- 238000005086 pumping Methods 0.000 description 6
- 241000114304 Laterallus jamaicensis Species 0.000 description 5
- 239000007788 liquid Substances 0.000 description 5
- 238000000926 separation method Methods 0.000 description 3
- 239000013589 supplement Substances 0.000 description 3
- 230000003139 buffering effect Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 230000001502 supplementing effect Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008447 perception Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
Images
Classifications
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- 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
- B41J2/1752—Mounting within the printer
- B41J2/17523—Ink connection
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- 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
- B41J2/135—Nozzles
- B41J2/165—Prevention or detection of nozzle clogging, e.g. cleaning, capping or moistening for nozzles
- B41J2/16517—Cleaning of print head nozzles
- B41J2/16552—Cleaning of print head nozzles using cleaning fluids
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- 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
- B41J2/17566—Ink level or ink residue control
-
- 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
- B41J2/135—Nozzles
- B41J2/165—Prevention or detection of nozzle clogging, e.g. cleaning, capping or moistening for nozzles
- B41J2/16517—Cleaning of print head nozzles
- B41J2002/1657—Cleaning of only nozzles or print head parts being selected
Landscapes
- Ink Jet (AREA)
Abstract
The invention relates to an ink supply system of an ink-jet printer, which comprises an ink storage module, an ink supply module, a flushing module and a plurality of nozzles. The ink storage module includes: a first ink tank and a second ink tank. An ink pump is arranged on a pipeline connecting the first ink barrel and the second ink barrel, and the ink pump can pump ink in the first ink barrel to the second ink barrel. The ink supply module comprises a buffer bin and an ink distributing rail. The inlet of the buffer bin is connected with the outlet of the second ink barrel, and the outlet of the buffer bin is connected with the ink inlet of the ink distributing rail. The ink distribution rail is provided with a flushing port and a plurality of ink outlets, ink distribution cavities communicated with the ink inlet, the ink outlet and the flushing port are arranged in the ink distribution rail, and the ink outlets are correspondingly connected with the spray heads one by one through pipelines. The flushing module is connected with the flushing port on the ink distributing rail through a pipeline, ink is stored in the flushing module, and the flushing module can inject the ink from the flushing port into the ink distributing cavity, so that the ink in the ink distributing cavity is sprayed out of the spray head.
Description
Technical Field
The invention relates to the technical field of printers, in particular to an ink supply system of an ink-jet printer.
Background
In the printing process of the ink-jet printer, ink is often directly supplied to the nozzle by the ink pot, and if air remains in the pipeline of the ink-jet printer, the printing effect is reduced. In the prior art, when the nozzle of the ink-jet printer is blocked, air enters the pipeline of the ink-jet printer due to the fact that the nozzle is flushed, and then the printing effect is reduced. In the ink replenishing process of the ink-jet printer, the ink is usually replenished from the ink barrel to the ink pot directly due to the need of ensuring the normal operation of the ink-jet printer, and at the moment, air is easy to enter the ink pot, and the ink pot cannot be vacuumized, so that the air enters a pipeline of the ink-jet printer.
Disclosure of Invention
Technical problem to be solved
The invention provides an ink supply system of an ink-jet printer, and aims to solve the problem that in the prior art, an ink pot cannot be vacuumized in the flushing process and the ink replenishing process of a nozzle of the ink-jet printer, so that air can easily enter a pipeline of the ink-jet printer.
(II) technical scheme
In order to solve the above problems, the present invention provides an ink supply system of an inkjet printer, which includes an ink storage module, an ink supply module, a flushing module and a plurality of nozzles;
the ink storage module includes: a first ink tank and a second ink tank;
the outlet of the first ink barrel is connected with the inlet of the second ink barrel through a pipeline, an ink pump is arranged on the pipeline connecting the first ink barrel and the second ink barrel, the ink pump can pump the ink in the first ink barrel to the second ink barrel, and the gravitational potential energy of the ink in the second ink barrel is larger than that of the ink in the first ink barrel;
the ink supply module comprises a buffer bin and an ink distribution rail;
the inlet of the buffer bin is connected with the outlet of the second ink barrel, and the outlet of the buffer bin is connected with the ink inlet of the ink distributing rail;
the ink distribution rail is provided with a flushing port and a plurality of ink outlets, ink distribution cavities which are communicated with the ink inlet, the ink outlets and the flushing port are arranged in the ink distribution rail, and the ink outlets are correspondingly connected with the nozzles one by one through pipelines;
the flushing module is connected with the flushing port on the ink distributing rail through a pipeline, ink is stored in the flushing module, and the flushing module can inject the ink into the ink distributing cavity from the flushing port, so that the ink in the ink distributing cavity is sprayed out of the spray head.
Preferably, the ink supply system of the inkjet printer further includes: a vacuum pumping module;
a first vacuum port is arranged on the buffer bin, and a second vacuum port communicated with the ink distribution cavity is arranged on the ink distribution rail;
the first vacuum port and the second vacuum port are connected with the vacuumizing module, and the vacuumizing module can vacuumize the ink distribution cavity and the buffer bin.
Preferably, the vacuum pumping module comprises: the vacuum air storage tank is provided with a first negative pressure port, a second negative pressure port and a vacuumizing port;
first negative pressure mouth through first vacuum pipe with first vacuum mouth links to each other, be provided with first vacuum valve on the first vacuum pipe, second negative pressure mouth through second vacuum pipe with the second vacuum mouth links to each other, be provided with the second vacuum valve on the second vacuum pipe, the import of negative pressure pump with on the vacuum gas holder the mouth of managing to find time links to each other, the negative pressure pump with still be provided with first check valve on the pipeline of vacuum gas holder connection, the negative pressure pump is used for right vacuum gas holder evacuation.
Preferably, the vacuum pumping module further comprises a first vacuum buffer tank and a second vacuum buffer tank;
the first vacuum buffer tank is positioned on the first vacuum pipeline, and the first vacuum buffer tank is positioned between the first vacuum valve and the first vacuum port;
the second vacuum buffer tank is located on the second vacuum pipeline, and the second vacuum buffer tank is located between the second vacuum valve and the second vacuum port.
Preferably, the flushing module comprises a sleeve, a piston, a linear propulsion assembly, a connecting rod and an elastic element;
the piston is slidably mounted in the sleeve, ink can be stored in the sleeve, and a pressure outlet of the sleeve is connected with the flushing port on the ink distribution rail;
a linear push rod is arranged in the linear propelling component and can do linear motion, the linear propelling component is connected with one end of the sleeve, and the motion direction of the linear push rod is consistent with the sliding direction of the piston in the sleeve; an axially extending hollow channel is formed in the linear push rod, a first through hole is formed in the first end of the linear push rod, a second through hole is formed in the second end of the linear push rod, and the first end of the linear push rod is opposite to the piston;
a limiting end head is arranged at the first end of the connecting rod, the limiting end head can slide in the hollow channel and can be abutted against the peripheral wall of the first through hole, and the second end of the connecting rod is fixedly connected with the piston;
the elastic element is located between the first end of the linear push rod and the piston.
Preferably, the linear propulsion assembly comprises: the device comprises a main shell, a screw rod, a pushing nut and a motor;
the one end of the main casing body with sleeve fixed connection, motor fixed mounting be in on the main casing body, the screw rod with advance the nut and be located in the main casing body, advance the nut cover and establish on the screw rod, just advance the nut with main casing body sliding connection, advance the nut can not be in main casing internal rotation, the one end of screw rod with the output shaft of motor, the other end of screw rod is located in the cavity passageway, just the second end of sharp push rod with advance nut fixed connection.
Preferably, the linear propulsion assembly further comprises a guide rod, the guide rod is fixedly installed in the main shell, and the guide rod is parallel to the linear push rod; the pushing nut is provided with a flange, the flange is provided with a guide through hole, and the guide through hole is sleeved on the guide rod.
Preferably, the elastic element is a spring, a spring bracket is fixedly mounted at a first end of the linear push rod, one end of the spring abuts against the spring bracket, the other end of the spring abuts against the piston, and the spring bracket is fixedly mounted on the linear push rod through threads.
Preferably, the side surface of the second end of the connecting rod is provided with an external thread, the end surface of the piston opposite to the linear push rod is provided with an internal thread connecting hole, and the second end of the connecting rod is fixedly arranged in the internal thread connecting hole.
Preferably:
a first valve is arranged on a pipeline connecting the buffer bin and the second ink barrel;
the buffer bin and the ink distributing rail are both positioned in the heating constant-temperature area, and a second valve is arranged on a pipeline connected with the buffer bin and the ink distributing rail;
and a third valve, a second one-way valve and a filtering device are sequentially arranged on a pipeline connected with the ink outlet and the spray head along the direction from the ink outlet to the spray head.
(III) advantageous effects
According to the invention, the buffer bin and the ink distributing rail are arranged in series between the second ink barrel and the spray head, when ink needs to be supplemented in the buffer bin, the connection between the buffer bin and the ink distributing rail is disconnected, the second ink barrel supplements ink to the buffer bin, and at the moment, the buffer bin and the ink distributing rail are in a disconnected state, so that air cannot enter the ink distributing rail. After the ink in the buffer bin is larger than a set value, the second ink barrel is disconnected from the buffer bin, the buffer bin is independently vacuumized by the vacuumizing module, and after the air remained in the buffer bin is pumped away, the buffer bin is opened to be connected with the ink distributing rail, so that the whole ink supplementing process is completed. In the whole ink replenishing process, the ink distributing rail can not generate air communication with the outside all the time, and the buffer bin is vacuumized by the vacuumizing module after ink replenishing is completed, so that the outside air is prevented from entering, and gas-liquid separation is realized. Meanwhile, the ink distribution chamber is pressurized by injecting ink into the ink distribution chamber, so that the nozzle is flushed, no air is involved in the flushing process of the nozzle, and air is prevented from entering the ink distribution chamber.
Drawings
FIG. 1 is a schematic diagram of an ink supply system of an inkjet printer according to the present invention;
FIG. 2 is a schematic view of the flushing module of the present invention with the resilient member in a compressed state;
fig. 3 is a schematic structural view of the elastic element in the flushing module of the present invention in a reset state.
[ description of reference ]
1: an ink storage module; 11: a first ink tank; 12: a second ink tank; 13: an ink pump; 14: a first valve;
2: an ink supply module; 21: a buffer bin; 22: an ink distributing rail; 23: an ink distributing cavity; 24: a second valve;
3: a flushing module; 31: a sleeve; 32: a piston; 320: an internal thread connecting hole; 33: a linear propulsion assembly; 331: a linear push rod; 3311: a hollow channel; 3312: a first through hole; 332: a main housing; 333: a screw; 334: pushing the nut; 3341: a flange; 335: a motor; 336: a guide bar; 337: a spring bracket; 34: a connecting rod; 35: a restraining tip; 36: an elastic element;
4: a spray head; 41: a third valve; 42: a second one-way valve; 43: a filtration device;
5: a vacuumizing module; 51: a vacuum gas storage tank; 52: a negative pressure pump; 53: a first vacuum valve; 54: a second vacuum valve; 55: a first check valve; 56: a first vacuum buffer tank; 57: and a second vacuum buffer tank.
Detailed Description
For the purpose of better explaining the present invention and to facilitate understanding, the present invention will be described in detail by way of specific embodiments with reference to the accompanying drawings.
It should be noted that all the directional indicators (such as upper, lower, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the motion situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.
In addition, the descriptions related to "first", "second", etc. in the present invention are only for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "connected," "secured," and the like are to be construed broadly, and for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
As shown in fig. 1, the present invention provides an ink supply system of an inkjet printer, which includes an ink storage module 1, an ink supply module 2, a flushing module 3, and a plurality of nozzles 4.
The ink storage module 1 includes: a first ink tank 11 and a second ink tank 12. The outlet of the first ink barrel 11 is connected with the inlet of the second ink barrel 12 through a pipeline, wherein an ink pump 13 is arranged on the pipeline connecting the first ink barrel 11 and the second ink barrel 12, the ink pump 13 can pump the ink in the first ink barrel 11 to the second ink barrel 12, and the gravitational potential energy of the ink in the second ink barrel 12 is greater than that of the ink in the first ink barrel 11. In a preferred embodiment, a liquid level sensor is disposed on each of the first ink tank 11 and the second ink tank 12, and a filter is disposed on a connection pipeline between the ink pump 13 and the first ink tank 11.
The ink supply module 2 includes a buffer tank 21 and an ink distribution rail 22. The inlet of the buffer bin 21 is connected with the outlet of the second ink barrel 12, and the outlet of the buffer bin 21 is connected with the ink inlet of the ink distributing rail 22. The ink distributing rail 22 is provided with a flushing port and a plurality of ink outlets, an ink distributing cavity 23 communicated with the ink inlet, the ink outlet and the flushing port is arranged in the ink distributing rail 22, and the ink outlets are correspondingly connected with the nozzles 4 one by one through pipelines. In a preferred embodiment, the buffer bin 21 and the ink distribution rail 22 are respectively provided with a liquid level sensor, when the ink jet printer works normally, the buffer bin 21 and the ink distribution rail 22 are in a communication state, and the ink distribution rail 22 directly supplies ink for the spray head 4; when the ink in the buffer bin 21 is less than a certain value, the ink-jet printer needs to replenish the ink, the connection between the ink distribution rail 22 and the buffer bin 21 is disconnected, the second ink barrel 12 supplies ink to the buffer bin 21, in the present embodiment, the ink in the second ink barrel 12 can flow into the buffer bin 21 under the action of its own gravity, and at this time, the buffer bin 21 and the ink distribution rail 22 are in a disconnected state, so that air cannot enter the ink distribution rail 22. When the ink in the buffer bin 21 is larger than the set value, the connection between the second ink barrel 12 and the buffer bin 21 is disconnected, and the connection between the buffer bin 21 and the ink distributing rail 22 is opened, so that the whole ink supplementing process is completed. At whole benefit black in-process, divide black rail 22 to produce the air with the external world all the time and exchange, and surge bin 21 is when mending black, only needs second china ink bucket 12 to fill up surge bin 21 and just can guarantee that there is not the entering of external air in surge bin 21, realizes gas-liquid separation, has guaranteed the printing effect.
The flushing module 3 is connected with the flushing port on the ink distributing rail 22 through a pipeline, ink is stored in the flushing module 3, the flushing module 3 can inject the ink into the ink distributing cavity 23 from the flushing port, and the ink in the ink distributing cavity 23 is sprayed out of the spray head 4. In the invention, the ink dividing cavity 23 is pressurized in a mode of injecting ink into the ink dividing cavity 23, so that the blocked spray head 4 is flushed by the ink in the ink dividing cavity 23. In the scheme of flushing the nozzle 4, high-pressure air is not introduced into the ink distribution cavity 23, but is pressurized by injecting ink, so that no air exists in the ink distribution cavity 23 in the whole flushing process.
In a preferred embodiment, a first valve 14 is arranged on a pipeline connecting the buffer bin 21 and the second ink barrel 12, and the first valve 14 is used for controlling the on-off between the buffer bin 21 and the second ink barrel 12. Surge bin 21 and branch black rail 22 all are located heating thermostatic zone, can set up electric heating wire in the heating thermostatic zone and be used for the heating, can also set up temperature sensor in the heating thermostatic zone and be used for the temperature in the perception heating thermostatic zone, and then make things convenient for the regulation of temperature. With buffering storehouse 21 and branch black rail 22 setting in heating constant temperature region for the ink in buffering storehouse 21 and the branch black rail 22 all is in the heating state, has avoided solidifying of ink, makes when printing, and the mobility of ink is better, and then has improved the printing effect. A second valve 24 is arranged on a pipeline connecting the buffer bin 21 and the ink distribution rail 22, and the second valve 24 is used for controlling the on-off between the buffer bin 21 and the ink distribution rail 22. On the pipeline that ink outlet and shower nozzle 4 are connected, the direction of following ink outlet to shower nozzle 4 has set gradually third valve 41, second check valve 42 and filter equipment 43, all set up third valve 41 between ink outlet and shower nozzle 4, just can be to carrying out solitary control of shower nozzle 4, after single shower nozzle 4 takes place to block up, only need control corresponding third valve 41, make the shower nozzle 4 that takes place to block up be in the connected state with dividing black rail 22, just can wash the shower nozzle 4 that takes place to block up alone, resources are saved. The second check valve 42 is provided so that ink can flow from the ink distribution rail 22 into the head 4 without affecting printing, but ink at the head 4 cannot flow back to the ink distribution rail 22.
Further, the ink supply system of the inkjet printer further includes a vacuum pumping module 5. The buffer bin 21 is provided with a first vacuum port, and the ink distribution rail 22 is provided with a second vacuum port communicated with the ink distribution cavity 23. The first vacuum port and the second vacuum port are both connected with the vacuumizing module 5, and the vacuumizing module 5 can vacuumize the ink distributing cavity 23 and the buffer bin 21. The buffer bin 21 and the ink cavity are vacuumized by the vacuumizing module 5, so that the buffer bin 21 and the ink distributing cavity 23 are always kept in a negative pressure state, and ink turbulence is avoided. In addition, the ink distributing rail 22 and the buffer bin 21 are both provided with pressure sensors, and the pressure sensors are used for sensing the pressure in the buffer bin 21 and the ink distributing cavity 23, so as to determine whether vacuum-pumping treatment is required. Meanwhile, the vacuumizing module 2 can also play a role in ink supplement, for example, after the second ink barrel 12 supplements ink to the buffer bin, the connection between the buffer bin 21 and the second ink barrel 12 is disconnected, the buffer bin 21 is vacuumized independently by the vacuumizing module 2, air remained in the buffer bin 21 is pumped away, then the connection between the buffer bin 21 and the ink distributing rail 22 is opened, gas-liquid separation is realized, and the air removing effect is more obvious.
Further, the evacuation module 5 includes: the vacuum air storage tank 51 is provided with a first negative pressure port, a second negative pressure port and a vacuumizing port, and the vacuum air storage tank 51 is provided with a negative pressure pump 52. The first negative pressure port is connected with the first vacuum port through a first vacuum pipeline, a first vacuum valve 53 is arranged on the first vacuum pipeline, the second negative pressure port is connected with the second vacuum port through a second vacuum pipeline, a second vacuum valve 54 is arranged on the second vacuum pipeline, an inlet of the negative pressure pump 52 is connected with an evacuation port on the vacuum gas storage tank 51, a first one-way valve 55 is further arranged on a pipeline connecting the negative pressure pump 52 and the vacuum gas storage tank 51, and the negative pressure pump 52 is used for evacuating the vacuum gas storage tank 51. The vacuum air storage tank 51 is vacuumized by the negative pressure pump 52, so that the inside of the vacuum air storage tank 51 is in a negative pressure state, and then the first vacuum valve 53 and the second vacuum valve 54 are used for controlling the vacuum air storage tank 51 to absorb air in the buffer bin 21 and the ink distribution rail 22, and enabling ink chambers in the buffer bin 21 and the ink distribution rail 22 to be in a negative pressure state.
In the preferred embodiment, the evacuation module 5 further includes a first vacuum buffer tank 56 and a second vacuum buffer tank 57. A first vacuum buffer tank 56 is located on the first vacuum line, and the first vacuum buffer tank 56 is located between the first vacuum valve 53 and the first vacuum port. A second vacuum buffer tank 57 is located on the second vacuum line, and the second vacuum buffer tank 57 is located between the second vacuum valve 54 and the second vacuum port. The addition of the first vacuum buffer tank 56 and the second vacuum buffer tank 57 enables the negative pressure pump 52 not to affect the buffer bin 21 and the ink distribution rail 22 when the vacuum air storage tank 51 is vacuumized. Further, a first check valve 55 is provided in a pipe connecting the negative pressure pump 52 and the vacuum air tank 51. The first check valve 55 is provided between the negative pressure pump 52 and the vacuum air tank 51, so that air is prevented from flowing from the negative pressure pump 52 to the vacuum air tank 51 on the premise that the vacuum air tank 51 is not subjected to vacuum pumping by the negative pressure pump 52.
Furthermore, as shown in fig. 2 and 3, the flushing module 3 comprises a sleeve 31, a piston 32, a linear propulsion assembly 33, a connecting rod 34 and an elastic element 36. The piston 32 is slidably arranged in the sleeve 31, the sleeve 31 can store ink, and a pressure outlet of the sleeve 31 is connected with a flushing port on the ink distribution rail 22; by storing the ink in the sleeve 31, when the piston 32 moves, the ink can enter the ink distribution cavity 23 of the ink distribution rail 22 from the pressure outlet on the sleeve 31, so that the ink distribution cavity 23 is pressurized, no gas is involved in the whole pressurization process, no relevant gas is left in the whole pipeline of the printer, and the situation that the printing effect is not ideal is avoided.
A linear push rod 331 is arranged in the linear propelling component 33, the linear push rod 331 can do linear motion, the linear propelling component 33 is connected with one end of the sleeve 31, and the motion direction of the linear push rod 331 is consistent with the sliding direction of the piston 32 in the sleeve 31; an axially extending hollow channel 3311 is formed in the linear push rod 331, a first through hole 3312 is formed at a first end of the linear push rod 331, a second through hole is formed at a second end of the linear push rod 331, and the first end of the linear push rod 331 is opposite to the piston 32. A first end of the connecting rod 34 is provided with a limiting end head 35, the limiting end head 35 can slide in the hollow channel 3311 and can abut against the peripheral wall of the first through hole 3312, and a second end of the connecting rod 34 is fixedly connected with the piston 32. The elastic member 36 is located between the first end of the linear push rod 331 and the piston 32. In a preferred embodiment, the elastic element 36 is a spring, a spring bracket 337 is fixedly mounted on a first end of the linear push rod 331, one end of the spring abuts against the spring bracket 337, and the other end of the spring abuts against the piston 32. The spring bracket 337 is fixedly mounted on the linear push rod 331 by a screw thread. When the nozzle 4 on the printer is blocked and needs to be flushed, the linear push rod 331 moves to the left, as shown in fig. 2, at this time, the elastic element 36 between the linear push rod 331 and the piston 32 is compressed, that is, the spring is compressed, at this time, the piston 32 moves to the left under the elastic force of the spring, and further ink in the sleeve 31 is pushed to enter the ink dividing chamber 23, so that pressurization of the ink dividing chamber 23 is realized, the pressure in the ink dividing chamber 23 can be adjusted by using the degree of compression of the spring by the linear push rod 331, the adjustment mode is simple, when the linear push rod 331 pushes the piston 32 to move to the left by the spring, the linear push rod 331 and the piston 32 are in elastic connection, and the change of the pressure is linear in the pressurization process. If the linear push rod 331 is directly connected to the piston 32, that is, the linear push rod 331 and the piston 32 are rigidly connected, when the ink chamber 23 is pressurized, the linear push rod 331 does not have a constant and stable movement speed, so that the pressure in the ink chamber is likely to change suddenly, and other components in the pipeline of the inkjet printer are damaged. In addition, the linear push rod 331 is elastically connected with the piston 32, and when the piston 32 moves leftwards, the elastic element 36 can absorb resistance force applied by the piston 32 during movement, so that the impact applied to the piston 32 and the sleeve 31 is reduced after the piston 32 directly hits the sleeve 31, and the service life is prolonged. When the nozzle 4 is flushed, the piston 32 needs to be reset, as shown in fig. 3, the linear push rod 331 moves to the right, and since the restriction end 35 of the connecting rod 34 cannot pass through the first through hole 3312, the restriction end 35 abuts against the peripheral wall of the first through hole 3312, and the piston 32 is pulled to the original position through the connecting rod 34.
Further, the linear propulsion assembly 33 includes: a main housing 332, a threaded rod 333, a push nut 334, and a motor 335. One end of the main housing 332 is fixedly connected with the sleeve 31, the motor 335 is fixedly mounted on the main housing 332, the screw 333 and the pushing nut 334 are located in the main housing 332, the pushing nut 334 is sleeved on the screw 333, the pushing nut 334 is slidably connected with the main housing 332, the pushing nut 334 cannot rotate in the main housing 332, one end of the screw 333 is connected with an output shaft of the motor 335, the other end of the screw 333 is located in the hollow channel 3311, and the second end of the linear push rod 331 is fixedly connected with the pushing nut 334. In the invention, the rotation of the output shaft of the motor is used as a power source and is connected with the output shaft of the motor through the screw 333, so that the rotation of the output shaft of the motor is converted into the left and right movement of the pushing nut 334 on the screw 333, and finally the pushing nut 334 drives the linear push rod 331 to do linear reciprocating motion.
In the preferred embodiment, the linear propulsion assembly 33 further includes a guide bar 336, the guide bar 336 is fixedly installed in the main housing 332, and the guide bar 336 is parallel to the linear push rod 331; the push nut 334 is provided with a flange 3341, the flange 3341 is provided with a guide through hole, and the guide through hole is sleeved on the guide rod 336. The guide rod 336 is used for guiding the movement direction of the pushing nut 334, so that the pushing nut 334 can more stably drive the linear push rod 331 to do linear reciprocating movement.
Finally, the side of the second end of the connecting rod 34 is provided with an external thread, the end surface of the piston 32 opposite to the linear push rod 331 is provided with an internal threaded connecting hole 320, and the second end of the connecting rod 34 is fixedly installed in the internal threaded connecting hole 320. The removable connection between the piston 32 and the connecting rod 34 is achieved by means of a threaded connection, facilitating subsequent maintenance. The connecting rod 34 is an inner hexagonal round-head screw 333, the limiting end 35 is a cylindrical head of the inner hexagonal round-head screw 333, and the diameter of the cylindrical head is larger than that of the first through hole 3312.
It should be understood that the above description of specific embodiments of the present invention is only for the purpose of illustrating the technical lines and features of the present invention, and is intended to enable those skilled in the art to understand the contents of the present invention and to implement the present invention, but the present invention is not limited to the above specific embodiments. It is intended that all such changes and modifications as fall within the scope of the appended claims be embraced therein.
Claims (5)
1. The ink supply system of the ink-jet printer is characterized by comprising an ink storage module, an ink supply module, a flushing module, a vacuumizing module and a plurality of spray heads;
the ink storage module includes: a first ink tank and a second ink tank;
the outlet of the first ink barrel is connected with the inlet of the second ink barrel through a pipeline, an ink pump is arranged on the pipeline connecting the first ink barrel and the second ink barrel, the ink pump can pump the ink in the first ink barrel to the second ink barrel, and the gravitational potential energy of the ink in the second ink barrel is larger than that of the ink in the first ink barrel;
the ink supply module comprises a buffer bin and an ink distributing rail;
an inlet of the buffer bin is connected with an outlet of the second ink barrel, and an outlet of the buffer bin is connected with an ink inlet of the ink distributing rail;
the ink distribution rail is provided with a flushing port and a plurality of ink outlets, ink distribution cavities which are communicated with the ink inlet, the ink outlets and the flushing port are arranged in the ink distribution rail, and the ink outlets are correspondingly connected with the nozzles one by one through pipelines;
the flushing module is connected with the flushing port on the ink distribution rail through a pipeline, ink is stored in the flushing module, and the flushing module can inject the ink into the ink distribution cavity from the flushing port, so that the ink in the ink distribution cavity is sprayed out of the spray head;
a first vacuum port is arranged on the buffer bin, and a second vacuum port communicated with the ink distribution cavity is arranged on the ink distribution rail; the first vacuum port and the second vacuum port are both connected with the vacuumizing module, and the vacuumizing module can vacuumize the ink distribution cavity and the buffer bin;
the flushing module comprises a sleeve, a piston, a linear propelling component, a connecting rod and an elastic element;
the piston is slidably mounted in the sleeve, ink can be stored in the sleeve, and a pressure outlet of the sleeve is connected with the flushing port on the ink distribution rail;
a linear push rod is arranged in the linear propelling component and can do linear motion, the linear propelling component is connected with one end of the sleeve, and the motion direction of the linear push rod is consistent with the sliding direction of the piston in the sleeve; an axially extending hollow channel is formed in the linear push rod, a first through hole is formed in the first end of the linear push rod, a second through hole is formed in the second end of the linear push rod, and the first end of the linear push rod is opposite to the piston;
a limiting end head is arranged at the first end of the connecting rod, the limiting end head can slide in the hollow channel and can be abutted against the peripheral wall of the first through hole, and the second end of the connecting rod is fixedly connected with the piston;
the elastic element is positioned between the first end of the linear push rod and the piston;
the linear propulsion assembly includes: the device comprises a main shell, a screw rod, a pushing nut and a motor;
one end of the main shell is fixedly connected with the sleeve, the motor is fixedly mounted on the main shell, the screw rod and the pushing nut are located in the main shell, the pushing nut is sleeved on the screw rod and is in sliding connection with the main shell, the pushing nut cannot rotate in the main shell, one end of the screw rod is connected with an output shaft of the motor, the other end of the screw rod is located in the hollow channel, and the second end of the linear push rod is fixedly connected with the pushing nut;
the linear propelling component also comprises a guide rod, the guide rod is fixedly arranged in the main shell, and the guide rod is parallel to the linear pushing rod; the pushing nut is provided with a flange, the flange is provided with a guide through hole, and the guide through hole is sleeved on the guide rod; the elastic element is a spring, a spring bracket is fixedly mounted at the first end of the linear push rod, one end of the spring abuts against the spring bracket, the other end of the spring abuts against the piston, and the spring bracket is fixedly mounted on the linear push rod through threads.
2. The ink supply system of an inkjet printer according to claim 1, wherein the vacuum module comprises: the vacuum air storage tank is provided with a first negative pressure port, a second negative pressure port and a vacuumizing port;
first negative pressure mouth through first vacuum pipe with first vacuum mouth links to each other, be provided with first vacuum valve on the first vacuum pipe, second negative pressure mouth through second vacuum pipe with second vacuum mouth links to each other, be provided with the second vacuum valve on the second vacuum pipe, the import of negative pressure pump with on the vacuum gas holder the mouth of managing to find time links to each other, the negative pressure pump with still be provided with first check valve on the pipeline of vacuum gas holder connection, the negative pressure pump is used for right vacuum gas holder evacuation.
3. The ink supply system of an inkjet printer of claim 2, wherein the evacuation module further comprises a first vacuum buffer tank and a second vacuum buffer tank;
the first vacuum buffer tank is positioned on the first vacuum pipeline, and the first vacuum buffer tank is positioned between the first vacuum valve and the first vacuum port;
the second vacuum buffer tank is positioned on the second vacuum pipeline, and the second vacuum buffer tank is positioned between the second vacuum valve and the second vacuum port.
4. The ink supply system of an ink jet printer as claimed in claim 1, wherein a side surface of the second end of said connecting rod is provided with an external thread, an end surface of said piston opposite to said linear push rod is provided with an internal threaded connection hole, and the second end of said connecting rod is fixedly installed in said internal threaded connection hole.
5. The ink supply system for an ink jet printer according to any one of claims 1 to 4, wherein:
a first valve is arranged on a pipeline connecting the buffer bin and the second ink barrel;
the buffer bin and the ink distribution rail are both positioned in the heating constant-temperature area, and a second valve is arranged on a pipeline connected with the buffer bin and the ink distribution rail;
and a third valve, a second one-way valve and a filtering device are sequentially arranged on a pipeline connected with the ink outlet and the spray head along the direction from the ink outlet to the spray head.
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| KR100408967B1 (en) * | 2002-10-24 | 2003-12-12 | Hypernics Co Ltd | Automatic ink feeding device by using pneumatic pressure |
| CN201333834Y (en) * | 2008-09-28 | 2009-10-28 | 上海泰威技术发展有限公司 | Nozzle compressed air cleaning device for digital inkjet printer |
| JP5600910B2 (en) * | 2009-08-31 | 2014-10-08 | セイコーエプソン株式会社 | Liquid ejecting apparatus and method for cleaning liquid ejecting head in liquid ejecting apparatus |
| CN101722733B (en) * | 2009-11-19 | 2012-01-11 | 南开大学 | Three-dimensional spray-painting ink supply system |
| CN107685543A (en) * | 2016-08-05 | 2018-02-13 | 深圳诚拓数码设备有限公司 | Ink temperature control system and digital-code printer |
| CN207274166U (en) * | 2017-10-09 | 2018-04-27 | 广东科达洁能股份有限公司 | Ceramic ink jet printer circulates ink system |
| CN109501470B (en) * | 2019-01-11 | 2020-03-10 | 京东方科技集团股份有限公司 | Ink supply system, control method thereof and ink-jet printing device |
| JP7346826B2 (en) * | 2019-01-24 | 2023-09-20 | 京セラドキュメントソリューションズ株式会社 | Head unit and inkjet recording device |
| CN113276565A (en) * | 2021-06-04 | 2021-08-20 | 上海锐尔发数码科技有限公司 | Ink supply system for ink jet printing head |
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Application publication date: 20220111 Assignee: Xinyin Intelligent Equipment Co.,Ltd. Assignor: Xinyin Technology Co.,Ltd. Contract record no.: X2023980040797 Denomination of invention: An ink supply system for inkjet printers Granted publication date: 20221104 License type: Common License Record date: 20230828 |
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Denomination of invention: An inkjet printer's ink supply system Effective date of registration: 20231130 Granted publication date: 20221104 Pledgee: Hunan Bank Co.,Ltd. Loudi Branch Pledgor: Xinyin Technology Co.,Ltd. Registration number: Y2023980068791 |
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