CN216885845U

CN216885845U - Ink supply system of piezoelectric type ink-jet printer

Info

Publication number: CN216885845U
Application number: CN202220280868.1U
Authority: CN
Inventors: 徐红宇; 张运辽
Original assignee: Zhengzhou Weiyan Printing Technology Co ltd
Current assignee: Zhengzhou Weiyan Printing Technology Co ltd
Priority date: 2022-02-11
Filing date: 2022-02-11
Publication date: 2022-07-05
Anticipated expiration: 2032-02-11

Abstract

The utility model relates to the technical field of printers, in particular to an ink supply system of a piezoelectric ink-jet printer, which comprises a main ink box, an auxiliary ink box, a waste ink box and a spray head, wherein the main ink box is connected with the auxiliary ink box through a hose, an overflow hole is formed in the side surface of the auxiliary ink box, the overflow hole is provided with a hose connected with the main ink box, the upper part of the auxiliary ink box is provided with an air hole, the bottom of the auxiliary ink box is connected with the spray head through a hose, a cleaning pump is arranged between the auxiliary ink box and the spray head, and the waste ink box is connected onto the cleaning pump. According to the utility model, the overflow hole is formed in the auxiliary ink box, when the electromagnetic switch fails, redundant ink can flow back into the main ink box through the overflow hole, so that the ink waste is prevented; a cleaning pump is arranged between the auxiliary ink box and the spray head, and a waste ink box is connected, so that the spray head can be cleaned conveniently, and waste ink can be recycled.

Description

Ink supply system of piezoelectric type ink-jet printer

Technical Field

The utility model relates to the technical field of printers, in particular to an ink supply system of a piezoelectric type ink-jet printer.

Background

The piezoelectric ink jet printing technology has strong control capability on ink drops, the particle shapes of the ink drops are more regular, the positioning is more accurate, the printing resolution is higher, and high-precision printing is easy to realize. Therefore, piezoelectric ink jet printers are widely used. The present piezoelectric ink-jet printer generally adopts a continuous ink supply system, and an external ink bottle is connected with an ink box of the printer by a conduit, so that the ink can be continuously provided for the ink box, and the continuous ink supply system has the greatest advantages of material benefit and much cheaper price than the original ink.

At present, the ink supply is generally controlled by an electromagnetic valve, but faults can occur in the control process, and ink is continuously supplied to cause ink overflow. In the use, the condition that the shower nozzle blockked up can appear, needs to dismantle the shower nozzle and get off to wash, and is very inconvenient.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical defects in the prior art, an object of the present invention is to provide an ink supply system for a piezoelectric ink jet printer, which can prevent ink overflow and facilitate cleaning of a nozzle.

In order to achieve the purpose, the utility model adopts the following technical scheme:

the utility model provides an ink supply system of piezoelectric type inkjet printer, includes main ink horn, vice ink horn, useless ink horn and shower nozzle, main ink horn with through the hose connection between the vice ink horn, the overflow hole has been seted up to vice ink horn side, be provided with hose connection to main ink horn on the overflow hole, air vent, bottom are seted up on vice ink horn upper portion and are passed through the hose and the shower nozzle is connected, be provided with the scavenging pump between vice ink horn and the shower nozzle, be connected with useless ink horn on the scavenging pump.

By adopting the technical scheme, when the electromagnetic switch fails and continuously supplies ink, redundant ink can flow back to the main ink box through the overflow hole, so that ink waste is avoided; when the head is clogged, the cleaning pump can be used for cleaning, and waste ink can be recovered.

Preferably, an ink pump, a filter and a flow regulating valve are arranged between the main ink box and the auxiliary ink box, the ink pump is used for conveying the ink in the main ink box to the auxiliary ink box, the filter is used for filtering impurities in the ink, and the flow regulating valve is used for regulating the ink supply flow.

By adopting the technical scheme, the ink can be conveyed into the auxiliary ink box through the ink pump; impurities in the ink can be filtered through the filter, so that the nozzle is prevented from being blocked; the ink supply rate can be controlled by a flow regulating valve.

Preferably, the filter and the hose are detachably connected.

By adopting the technical scheme, the filter can be conveniently cleaned.

Preferably, the height of the overflow hole is equal to the liquid level of the spray head, and a one-way valve is arranged on a hose between the overflow hole and the main ink box.

By adopting the technical scheme, the ink in the main ink box is prevented from entering the auxiliary ink box through the overflow hole.

Preferably, the main ink box and the auxiliary ink box are both arranged on the printer shell, and the installation position of the main ink box on the printer is higher than that of the auxiliary ink box.

By adopting the technical scheme, the ink in the main ink box can be conveniently conveyed to the auxiliary ink box.

Preferably, the main ink box is provided with an ink injection hole.

By adopting the technical scheme, ink can be conveniently added into the main ink box.

Preferably, a liquid level sensor is mounted on the auxiliary ink box, and the liquid level sensor is electrically connected with the ink pump.

By adopting the technical scheme, the ink adding is convenient to implement and control.

In conclusion, the beneficial effects of the utility model are as follows:

1. the overflow hole is formed in the auxiliary ink box, and when the electromagnetic switch fails, redundant ink can flow back into the main ink box through the overflow hole, so that waste of the ink is prevented;

2. a cleaning pump is arranged between the auxiliary ink box and the spray head, and a waste ink box is connected to facilitate cleaning of the spray head and recovery of waste ink.

Drawings

FIG. 1 is a schematic structural diagram of an embodiment of the present invention;

the reference numerals in the figures illustrate:

1. a main ink cartridge; 11. an ink injection hole; 2. a sub ink cartridge; 21. an overflow aperture; 3. a waste ink cartridge; 4. a spray head; 5. a hose; 6. cleaning the pump; 7. an ink pump; 8. a filter; 9. a flow regulating valve; 10. a one-way valve.

Detailed Description

The following describes an embodiment of the present invention in further detail with reference to fig. 1.

In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

An ink supply system of a piezoelectric ink-jet printer is disclosed, as shown in fig. 1, comprising a main ink box 1, a sub ink box 2, a waste ink box 3 and a nozzle 4, wherein the main ink box 1 is used for providing ink for the whole system, the sub ink box 2 is used for temporarily storing ink and providing the ink for the nozzle 4, the waste ink box 3 is used for containing waste ink discharged after cleaning the nozzle 4, the nozzle 4 is used for ink-jet printing, the main ink box 1 and the sub ink box 2 are connected through a hose 5, a spill hole 21 is formed in the side surface of the sub ink box 2, the hose 5 arranged on the spill hole 21 is connected to the main ink box 1, thereby preventing a solenoid valve between the main ink box 1 and the sub ink box 2 from being broken down, continuously supplying ink for the sub ink box 2, causing the ink in the sub ink box 2 to spill, and preventing the redundant ink in the sub ink box 2 from flowing back into the main ink box 1 through the spill hole 21, thereby preventing the waste of the ink. The liquid level sensor is arranged in the auxiliary ink box 2 and used for detecting the ink level, when the fact that the ink level in the auxiliary ink box 2 is lower than a limit value is detected, the system controls the main ink box 1 to supply ink to the auxiliary ink box 2 until the ink level reaches a normal value, the upper portion of the auxiliary ink box 2 is provided with a vent hole, the bottom of the auxiliary ink box is connected with the spray head 4 through the hose 5, outside air enters the auxiliary ink box 2 from the vent hole and presses the ink in the hose 5 to the spray head 4, the cleaning pump 6 is arranged between the auxiliary ink box 2 and the spray head 4, the waste ink box 3 is connected to the cleaning pump 6, in the embodiment, the cleaning pump 6 is a centrifugal pump, two functions of cleaning and printing can be achieved by controlling stopping and acting of the centrifugal pump, and the cleaned waste ink is discharged into the waste ink box 3.

In this embodiment, in order to facilitate the flexibility of production and processing in the industry, a parallel double-pipe structure consisting of a cleaning pipe for installing a peristaltic pump or a diaphragm pump and a bypass ink supply pipe controlled by an electromagnetic valve can be adopted between the auxiliary ink box 2 and the nozzle 4, the cleaning pipe and the bypass ink supply pipe can be connected in parallel and then are converged on the hose 5 for supplying ink to the nozzle 4, because the peristaltic pump or the diaphragm pump is closed in a non-working state, the cleaning pipe can be connected with the bypass ink supply pipe only when the cleaning function is realized, the bypass ink supply pipe is closed by the electromagnetic valve at the moment, ink backflow is prevented, the peristaltic pump or the diaphragm pump stops working in the printing process, the cleaning pipe is closed, and the bypass ink supply pipe is communicated.

In this embodiment, an ink pump 7, a filter 8 and a flow control valve 9 are disposed between a main ink cartridge 1 and a sub ink cartridge 2, the ink pump 7 is used for conveying ink in the main ink cartridge 1 to the sub ink cartridge 2, the installation height of the main ink cartridge 1 is higher than that of the sub ink cartridge 2, if ink supply is realized only by liquid level difference, the ink supply process is not easy to control and unstable, therefore, the ink pump 7 is installed between the main ink cartridge 1 and the sub ink cartridge 2, and an electromagnetic valve is installed for controlling the start and stop of the ink pump 7, the ink usually contains precipitates, which easily block the hose 5 or the nozzle 4, the filter 8 is also installed between the main ink cartridge 1 and the sub ink cartridge 2, the filter 8 is used for filtering impurities in the ink to prevent blocking of the pipeline or the nozzle 4, the hose 5 is sleeved on the filter 8, when the filter 8 needs to be cleaned, the hose 5 can be pulled out, the hose 5 is plugged on the filter 8 after cleaning, the hose 5 is also provided with a flow regulating valve 9 for regulating the ink supply flow, the printing speed determines the amount of ink used, the ink supply rate can be regulated according to the actual condition, and the ink supply shortage or the ink supply excessive overflow is prevented.

In this embodiment, the height of the overflow hole 21 is equal to the liquid level of the nozzle 4, which can ensure continuous ink supply to the nozzle 4 and prevent ink overflow caused by excessive ink, and the check valve 10 is disposed on the hose 5 between the overflow hole 21 and the main ink cartridge 1 to prevent the ink in the main ink cartridge 1 from flowing from the hose 5 to the sub ink cartridge 2.

The embodiments of the present invention are preferred embodiments of the present application, and the protection scope of the present application is not limited thereby, wherein like parts are denoted by like reference numerals. Therefore, the method comprises the following steps: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a piezoelectric type ink jet printer's ink supply system, its characterized in that, includes main ink horn (1), vice ink horn (2), useless ink horn (3) and shower nozzle (4), main ink horn (1) with connect through hose (5) between vice ink horn (2), overflow hole (21) have been seted up to vice ink horn (2) side, it is connected to main ink horn (1) to be provided with hose (5) on overflow hole (21), air vent, bottom have been seted up on vice ink horn (2) upper portion and have been passed through hose (5) and shower nozzle (4) and connect, be provided with scavenging pump (6) between vice ink horn (2) and shower nozzle (4), be connected with useless ink horn (3) on scavenging pump (6).

2. The ink supply system of the piezoelectric ink jet printer according to claim 1, wherein an ink pump (7), a filter (8) and a flow regulating valve (9) are arranged between the main ink box (1) and the sub ink box (2), the ink pump (7) is used for conveying the ink in the main ink box (1) to the sub ink box (2), the filter (8) is used for filtering impurities in the ink, and the flow regulating valve (9) is used for regulating the ink supply flow.

3. The ink supply system for piezoelectric ink jet printers according to claim 2, wherein the filter (8) and the hose (5) are detachably connected.

4. The system according to claim 1, wherein the height of the overflow hole (21) is equal to the liquid level of the nozzle (4), and a check valve (10) is arranged on the hose (5) between the overflow hole (21) and the main ink tank (1).

5. The ink supply system of piezoelectric ink jet printer according to claim 1, wherein the main ink cartridge (1) and the sub ink cartridge (2) are installed on the printer housing, and the main ink cartridge (1) is installed higher than the sub ink cartridge (2) on the printer.

6. The ink supply system of piezoelectric ink-jet printer according to claim 1, wherein the main ink cartridge (1) is provided with an ink injection hole (11).

7. The ink supply system of piezoelectric ink jet printer according to claim 1, wherein the sub cartridge (2) is mounted with a liquid level sensor, and the liquid level sensor is electrically connected to the ink pump (7).