CN217396029U

CN217396029U - Self-balancing ink supply system for ink-jet printer

Info

Publication number: CN217396029U
Application number: CN202221047551.XU
Authority: CN
Inventors: 钱余; 孙建飞
Original assignee: Wuxi Chenhao Technology Co ltd
Current assignee: Wuxi Chenhao Technology Co ltd
Priority date: 2022-05-05
Filing date: 2022-05-05
Publication date: 2022-09-09
Anticipated expiration: 2032-05-05

Abstract

The utility model relates to the technical field of ink-jet printing, in particular to a self-balancing ink supply system for an ink-jet printer, which comprises an ink box with a first ink cavity and a second ink cavity, wherein the ink box comprises a cover plate matched with the ink box; the first ink cavity comprises an ink inlet and a first circulating port, the ink inlet is connected with an ink supply pump through a hose, and the other end of the ink supply pump is connected with an ink barrel; the second ink cavity comprises an air pressure port, an ink outlet and a second circulating port, the air pressure port is connected with the air pressure pump through a hose, and the ink outlet is connected with the printing nozzle through a hose; the first circulation port and the second circulation port are respectively connected with a circulation pump through hoses; the ink supply pump, the pneumatic pump and the circulating pump are respectively connected with a master control system. The system is simple in structure, can ensure the printing quality when providing stable ink for the printing nozzle, and has the function of cleaning the printing nozzle, so that the service life of the printing nozzle can be greatly prolonged.

Description

Self-balancing ink supply system for ink-jet printer

Technical Field

The utility model relates to an inkjet printing technical field especially relates to a self-balancing ink supply system for inkjet printer.

Background

The ink-jet printer sprays the liquid ink into fine particles through a nozzle onto printing paper, the ink enters an ink box through an ink bottle, and then the ink is supplied to a printing nozzle for ink-jet printing through the ink box. Traditional ink horn is single chamber ink horn, because the ink gets into the ink horn from the ink bottle through pressure, so often can produce the surge in the ink horn under the effect of impact force, this ink that just leads to getting into the printing shower nozzle is unstable, can bring the air into even, can seriously influence the printing effect that spouts of printing the shower nozzle. Further, since the ink is deposited in the ink cartridge for a long time, if the ink is printed without shaking, not only color difference occurs, but also clogging of the printing head may occur.

Therefore, a new technology is urgently needed to solve the technical problem.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome above-mentioned prior art's problem, provide a self-balancing ink supply system for inkjet printer, adopt two china ink chambeies to set up, the ink is in main china ink bucket through supplying the china ink pump to take out the first china ink intracavity of ink horn, and the rethread circulating pump is taken out the second china ink intracavity to the ink from first china ink chamber, forms stable ink environment reentrant printing shower nozzle. The system is simple in structure, can ensure the printing quality when providing stable ink for the printing nozzle, and has the function of cleaning the printing nozzle, so that the service life of the printing nozzle can be greatly prolonged.

The above purpose is realized by the following technical scheme:

a self-balancing ink supply system for an ink-jet printer comprises an ink box with a first ink cavity and a second ink cavity, wherein the ink box comprises a cover plate matched with the ink box; the first ink cavity comprises an ink inlet and a first circulating port, the ink inlet is connected with an ink supply pump through a hose, and the other end of the ink supply pump is connected with an ink barrel; the second ink cavity comprises an air pressure port, an ink outlet and a second circulating port, the air pressure port is connected with the air pressure pump through a hose, and the ink outlet is connected with the printing nozzle through a hose; the first circulation port and the second circulation port are respectively connected with a circulation pump through hoses; the ink supply pump, the pneumatic pump and the circulating pump are respectively connected with a master control system.

Furthermore, a three-way valve is arranged between the pneumatic pump and the pneumatic port, a first interface of the three-way valve is connected with the pneumatic port through a hose, a second interface of the three-way valve is connected with the pneumatic pump through a hose, and a third interface of the three-way valve is communicated with the outside; the pneumatic pump is a positive pneumatic pump.

Furthermore, the circulating pump is also connected with a speed regulating plate for regulating the speed of the circulating pump.

Further, the first ink chamber and the second ink chamber are partitioned by a partition.

Furthermore, a notch is formed in the top of the partition plate and used for enabling the high liquid level to overflow to the low liquid level; the bottom edge of the notch and the bottom of the printing nozzle are positioned on the same horizontal line.

Furthermore, at least 1 ink inlet is arranged on the cover plate corresponding to the first ink cavity; at least 1 ink outlet is arranged at the bottom side of the second ink cavity; the first circulation port and the second circulation port are respectively arranged at the bottom sides of the first ink cavity and the second ink cavity; the air pressure port is arranged on the cover plate corresponding to the second ink cavity.

Furthermore, a liquid level sensor is arranged in the first ink cavity, the liquid level sensor is connected with the cover plate, and the liquid level state in the first ink cavity is monitored through connection with the master control system.

Further, the partition plate and the ink box are integrally injection-molded.

Furthermore, a groove which can be matched with the cavity groove in shape is formed in the bottom side of the cover plate, and a sealing ring is arranged on the inner wall of the groove; the cover plate is connected with the ink box through screws.

Further, the printing width of the printing nozzle is 54.1mm, the number of the nozzles is 4 multiplied by 320, double colors can be printed, the physical precision is 300DPI with double colors, and 600DPI with single color is obtained; the ejection frequency is 20KHZ, the ink drop size is 7-35PL, and the gray scale is 4.

Further, the printing width of the printing nozzle is 72.8mm, the number of nozzles is 1024, the firing frequency is 30KHZ, the physical precision is 360DPI, the ink drop size is 7-35PL, and the gray scale is 6 levels.

Further, the printing width of the printing nozzle is 72.19mm, the number of nozzles is 1024, the firing frequency is 45KHZ, the physical precision is 360DPI, the ink drop size is 7-35PL, and the gray scale level is 8.

Advantageous effects

A pair of self-balancing ink supply system for ink jet printer adopts two black chambeies to set up, and the ink is in main china ink bucket through supplying the china ink pump to take out the ink the first china ink intracavity of ink horn, and the rethread circulating pump is taken out the second china ink intracavity to the ink from first china ink chamber, forms stable ink environment reentrant printing shower nozzle. The system is simple in structure and convenient to control, can ensure the printing quality when providing stable ink for the printing nozzle, and meanwhile has the function of cleaning the printing nozzle, so that the service life of the printing nozzle can be greatly prolonged.

Drawings

Fig. 1 is a schematic structural view of a self-balancing ink supply system for an inkjet printer according to the present invention;

fig. 2 is a perspective view of an ink cartridge of a self-balanced ink supply system for an inkjet printer according to the present invention;

fig. 3 is a schematic structural view of a cover plate in an ink cartridge of a self-balancing ink supply system for an inkjet printer according to the present invention;

fig. 4 is an exploded view of the ink cartridge of the self-balancing ink supply system for an inkjet printer according to the present invention;

fig. 5 is the ink supply and cleaning schematic diagram of a self-balancing ink supply system for an inkjet printer.

Graphic notation:

1-a first ink cavity, 2-a second ink cavity, 3-an ink box, 4-a cover plate, 5-an ink inlet, 6-a first circulating port, 7-an ink supply pump, 8-an ink barrel, 9-an air pressure port, 10-an ink outlet, 11-a second circulating port, 12-an air pressure pump, 13-a printing nozzle, 14-a circulating pump, 15-a three-way valve, 16-a speed regulation plate, 17-a partition plate, 18-a notch, 19-a liquid level sensor, 20-a groove and 21-a sealing ring.

Detailed Description

The present invention will be described in further detail with reference to the drawings and examples.

As shown in fig. 1 and 2, a self-balancing ink supply system for an inkjet printer comprises an ink box 3 with a first ink chamber 1 and a second ink chamber 2, wherein the ink box 3 comprises a cover plate 4 matched with the ink box; the first ink cavity 1 comprises an ink inlet 5 and a first circulating port 6, the ink inlet 5 is connected with an ink supply pump 7 through a hose, and the other end of the ink supply pump 7 is connected with an ink barrel 8; the second ink cavity 2 comprises an air pressure port 9, an ink outlet 10 and a second circulating port 11, the air pressure port 9 is connected with an air pressure pump 12 through a hose, and the ink outlet 10 is connected with a printing nozzle 13 through a hose; the first circulation port 6 and the second circulation port 11 are respectively connected with a circulation pump 14 through hoses; the ink supply pump 7, the pneumatic pump 12 and the circulating pump 14 are respectively connected with a main control system (not labeled in the figure).

The working principle is as follows:

as shown in fig. 5, the system is started, the ink supply pump 7 pumps the ink in the ink barrel 8 to the first ink chamber 1 of the ink cartridge 3, and the ink level in the first ink chamber 1 is increased continuously with the passage of time; meanwhile, the circulation pump 14 works to pump the ink in the first ink chamber 1 into the second ink chamber 2, so as to provide a stable ink environment for the second ink chamber 2, including the following 2 working modes:

1. printing nozzle and pipeline cleaning mode

The air pressure pump 12 is started to inject positive pressure into the second ink cavity 2, ink in the second ink cavity 2 flows to the printing nozzle 13 along the pipeline quickly under the action of the positive pressure, the purpose of emptying the pipeline and air in the printing nozzle 13 is achieved, and the printing nozzle 13 is ensured to normally discharge ink in a subsequent normal printing mode.

2. Normal print mode

After the master control system receives the printing instruction, constantly control the ink supply pump 7 will ink in the china ink bucket 8 pumps extremely ink cartridge 3 first china ink intracavity 1, when first china ink chamber 1 continuously provides stable ink output to second china ink chamber 2, the ink in second china ink chamber 2 constantly gets into along the pipeline and prints shower nozzle 13 in, realizes providing the normal ink supply of printing shower nozzle 13, does benefit to the normal clear of printing.

In the present system, as shown in fig. 5, the first ink chamber 1 is separated from the second ink chamber 2 by a partition 17; the top of the partition 17 is provided with a notch 18, and the bottom edge of the notch 18 and the bottom of the print head 13 (i.e. the bottom of the nozzle) are located at the same horizontal line, so that the internal pressure balance between the print head 13 and the ink cartridge 3 can be ensured, and the inks inside of the print head 13 and the ink cartridge 3 are located at the same height, which is convenient for printing in a normal mode.

As a further description of the system, the air pump 12 in the system is used for inputting positive pressure scavenging air into the second ink chamber 2 when ink break or ink discharge (nozzle blockage) occurs during printing, so as to clean the pipeline and the printing nozzle 13;

the ink box 3 and the printing nozzle 13 are kept at the same horizontal line, so that the heights of the inks in the ink box and the printing nozzle are consistent, and the inks printed by the ink box are normal due to pressure balance (similar to the principle that the page in a U-shaped pipe is horizontal);

if the print head 13 is higher than the ink box 3, the ink will flow back into the ink box, and air will enter the pipeline along the nozzle, so that the print head 13 will not discharge ink;

if the print head 13 is lower than the ink cartridge 3, the pressure of the print head 12 is lower than the pressure of the second ink chamber 2, which may cause the ink to overflow the print head 13 and prevent normal printing.

As an optimization of the ink cartridge 3 in this embodiment, the first ink chamber 1 is separated from the second ink chamber 2 by a partition 17; the top of the partition plate 17 is provided with a notch 18 for overflowing the high liquid level to the low liquid level; that is, after the ink entering the first ink chamber 1 continuously rises, the ink can slowly adhere to the side wall of the partition 17 through the notch 18 and enter the second ink chamber 2, so that overflow of the ink cartridge 1 is effectively prevented, and meanwhile, as the overflowing ink can be located on the page of the second ink chamber 2, surging caused by the ink entering the bottom through the second circulation port 11 can be effectively suppressed, a more stable liquid level environment can be provided, and stable ink can be provided for the printing nozzle 13.

When the printing nozzle needs to be cleaned by pressing ink, the pneumatic pump 12 is started to press air pressure into the second ink chamber 2, so that the ink in the second ink chamber 2 quickly flows into the printing nozzle 13, and the purpose of cleaning the nozzle in the printing nozzle 13 is achieved.

As an optimization of the present embodiment, a three-way valve 15 is further disposed between the pneumatic pump 12 and the pneumatic port 9, a first port of the three-way valve 15 is connected to the pneumatic port 9 through a hose, a second port of the three-way valve 15 is connected to the pneumatic pump 12 through a hose, and a third port of the three-way valve 15 is communicated with the outside; here, the pneumatic pump 12 is a positive pneumatic pump for supplying positive air pressure into the second ink chamber 2.

As for optimization of control of the circulating pump 14, the circulating pump 14 is further connected with a speed regulation plate 16 for regulating the speed of the circulating pump 14, where the circulating pump 14 can pump the ink in the first ink chamber 1 into the second ink chamber 2, and can also realize rapid circulating interaction of the ink in the first ink chamber 1 and the second ink chamber 2 by controlling the speed, so as to achieve the purpose of homogenizing precipitates in the ink.

In this embodiment, at least 1 ink inlet is disposed on the cover plate 4 corresponding to the first ink chamber 1; at least 1 ink outlet is arranged at the bottom side of the second ink cavity 2; the first circulation port 6 and the second circulation port 11 are respectively arranged at the bottom sides of the first ink cavity 1 and the second ink cavity 2; the air pressure port 9 is arranged on the cover plate 4 corresponding to the second ink chamber 2.

This device still has the liquid level monitoring function for the liquid level state of ink in the intelligent monitoring ink horn, the outside major control system of being convenient for stops the injection of ink, prevents to take place to fill the china ink and leads to the ink horn to take place the ink leakage, specifically does be provided with level sensor 19 in the first china ink chamber 1, level sensor 19 with apron 4 is connected, through with major control system's connection realizes right ink liquid level state monitoring in the first china ink chamber 1.

In order to facilitate the mold opening and the firmness of the whole ink box, the partition board 17 and the ink box 3 are integrally formed by injection molding and are made of corrosion-resistant plastic materials.

As for the sealing connection between the cover plate 4 and the ink cartridge 3 in this embodiment, a groove 20 that can match the shapes of the first ink chamber 1 and the second ink chamber 2 is formed on the bottom side of the cover plate 4, a sealing ring 21 is disposed on the inner wall of the groove 20, and the cover plate 4 and the ink cartridge 3 are fastened and then connected by screws to form a seal.

As the specification selection of the printing head described in the present embodiment, the following is made:

the printing width of the printing nozzle 13 is 54.1mm, the number of nozzles is 4 multiplied by 320, double colors can be printed, the physical precision is 300DPI with double colors, and 600DPI with single color; the ejection frequency is 20KHZ, the ink drop size is 7-35PL, and the gray scale is 4.

The printing width of the printing nozzle 13 is 72.8mm, the number of nozzles is 1024, the ignition frequency is 30KHZ, the physical precision is 360DPI, the ink drop size is 7-35PL, and the gray scale is 6 levels.

The printing width 72.19mm, the number of nozzles 1024, the firing frequency 45KHZ, the physical precision 360DPI, the ink drop size 7-35PL and the gray scale level 8 of the printing nozzle 13.

The above description is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any conceivable changes or substitutions by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A self-balancing ink supply system for an ink-jet printer is characterized by comprising an ink box with a first ink cavity and a second ink cavity, wherein the ink box comprises a cover plate matched with the ink box; the first ink cavity comprises an ink inlet and a first circulating port, the ink inlet is connected with an ink supply pump through a hose, and the other end of the ink supply pump is connected with an ink barrel; the second ink cavity comprises an air pressure port, an ink outlet and a second circulating port, the air pressure port is connected with the air pressure pump through a hose, and the ink outlet is connected with the printing nozzle through a hose; the first circulation port and the second circulation port are respectively connected with a circulation pump through hoses; the ink supply pump, the pneumatic pump and the circulating pump are respectively connected with a master control system.

2. The self-balancing ink supply system for the inkjet printer according to claim 1, wherein a three-way valve is further disposed between the pneumatic pump and the pneumatic port, a first port of the three-way valve is connected to the pneumatic port through a hose, a second port of the three-way valve is connected to the pneumatic pump through a hose, and a third port of the three-way valve is communicated with the outside; the pneumatic pump is a positive pneumatic pump.

3. The self-balancing ink supply system of claim 1, wherein the circulation pump is further coupled to a speed adjustment plate for adjusting the speed of the circulation pump.

4. The self-balancing ink supply system of claim 1, wherein the first ink chamber is separated from the second ink chamber by a partition.

5. The self-balancing ink supply system for the inkjet printer as recited in claim 4, wherein a notch is formed at a top of the partition for overflowing the high liquid level to the low liquid level; the bottom edge of the notch and the bottom of the printing nozzle are positioned on the same horizontal line.

6. The self-balancing ink supply system of claim 1, wherein at least 1 of the ink inlets is disposed on the cover plate corresponding to the first ink chamber; at least 1 ink outlet is arranged at the bottom side of the second ink cavity; the first circulating port and the second circulating port are respectively arranged at the bottom sides of the first ink cavity and the second ink cavity; the air pressure port is arranged on the cover plate corresponding to the second ink cavity.

7. The self-balancing ink supply system for the inkjet printer according to claim 1, wherein a liquid level sensor is disposed in the first ink chamber, the liquid level sensor is connected to the cover plate, and monitoring of a liquid level state in the first ink chamber is achieved through connection with the main control system.

8. The self-balancing ink supply system of claim 1, wherein the print head has a print width of 54.1mm, a number of nozzles of 4 x 320, two colors capable of being printed, a physical accuracy of 300DPI for two colors, and 600DPI for one color; the ejection frequency is 20KHZ, the ink drop size is 7-35PL, and the gray scale is 4.

9. The self-balancing ink supply system for the inkjet printer as claimed in claim 1, wherein the printing head has a printing width of 72.8mm, a nozzle number of 1024, an ignition frequency of 30KHZ, a physical accuracy of 360DPI, an ink drop size of 7-35PL, and a gray scale of 6.

10. The self-balancing ink supply system for the inkjet printer according to claim 1, wherein the printing width of the printing nozzle is 72.19mm, the number of nozzles is 1024, the firing frequency is 45KHZ, the physical precision is 360DPI, the ink drop size is 7-35PL, and the gray scale is 8.