WO2019091184A1 - Ink path of ceramic inkjet printer, and printer - Google Patents

Abstract

An ink path of a ceramic inkjet printer, and a printer. The ink path of a ceramic inkjet printer comprises: an ink pipeline, an ink barrel (1), an ink container, a drive assembly, a spray nozzle (8), and at least one ultrasonic detector (5). The drive assembly pushes ink in the ink barrel (1) into the ink container via the ink pipeline. The ink container is connected to the spray nozzle (8). The ultrasonic detector (5) is installed between the drive assembly and the ink container and is used to detect whether ink flow is present at a discharge opening of the drive assembly. The condition of a segment of the ink pipeline at the discharge opening of the drive assembly is monitored in real-time by the ultrasonic detector. Upon detection of an anomaly of the drive assembly, an immediate prompt for replacing the drive assembly is generated to prevent blockage of the spray nozzle, thereby increasing the service life of the spray nozzle.

Description

Ceramic inkjet printer ink circuit and printer Technical field

The present invention relates to the field of printer technology, and more particularly to a ceramic inkjet printer ink path and printer.

Background technique

Ceramic inkjet printers have been widely used in many ceramic manufacturers due to their unique advantages. The pattern print quality of ceramic inkjet printers is closely related to the ceramic ink in the ceramic inkjet printer ink path. In addition to the components of solvents, dispersants, binders, and surfactants in conventional inks, commonly used ceramic inks also contain large particulate materials such as ceramic powders (colorants, colorants), while ceramic powders are easily precipitated. , which affects the cycle of the printer's ink path. When the ink path of the printer is unstable, it is easy to cause problems such as hanging lines, dripping ink, no printing, defective printing colors, and even clogging of the ink jet head.

The existing ceramic inkjet printer maintains the half-moon bending state of the ink at the nozzle hole, uses a gear pump to adjust the ink circulation speed in the ink path in real time, and uses a vacuum proportional valve to control the negative pressure in the ink path to make the ink path. The pressure remains stable.

However, since the ceramic ink contains ceramic powder, when the gear pump is used for circulating speed regulation, the gear in the gear pump is worn by the ceramic powder as the use time increases. While the worn gear pump can continue to operate, but lacks power, it will cause the ink in the ink path to stop circulating, causing the ink to settle. If the worn gear pump cannot be found and replaced in time, the nozzle will be blocked and the service life of the nozzle will be reduced.

Summary of the invention

The invention provides a ceramic inkjet printer ink path and a printer to monitor the circulation condition of the ink path of the ceramic inkjet printer, and timely find the wear gear pump with insufficient power in the ceramic printer, thereby reminding to replace the gear pump and avoid the gear The nozzle is blocked by the wear of the pump, and the service life of the nozzle is prolonged.

In a first aspect, the invention provides an ink path of a ceramic inkjet printer, comprising: an ink pipeline, an ink tank, an ink cartridge, a driving component, and a spray head, wherein the driving component presses the ink in the ink tank into the ink through the ink pipeline. In the ink cartridge, the ink cartridge is connected to the spray head, and further comprises: at least one ultrasonic detector;

The ultrasonic detector is installed between the drive assembly and the ink cartridge for detecting whether the outlet of the drive assembly has ink flow.

Optionally, the method further includes: an ink supply pump, an ink inlet buffer tank, and an ink outlet buffer tank; and the ink cartridge includes an ink inlet ink cartridge and an ink outlet ink cartridge, and the driving assembly includes an ink inlet circulation gear pump and Ink outlet gear pump; where:

The ink supply pump presses ink in the ink tank into the ink inlet buffer tank, and the ink inlet buffer tank communicates with a rear end of the ink inlet ink cartridge, and the ink inlet circulation gear pump will The ink in the ink inlet buffer tank is pressed into the front end of the ink inlet ink cartridge, and the ink of the ink inlet ink cartridge flows through the nozzle to the front end of the ink outlet ink cartridge, and the rear end of the ink outlet ink cartridge In communication with the ink outlet buffer tank, the ink in the ink outlet buffer tank is returned to the front end of the ink outlet ink cartridge through the ink outlet circulation gear pump.

Optionally, the method further includes: a defoamer and a first ultrasonic detector;

The defoamer is mounted on an ink line between the ink inlet circulation gear pump and the ink inlet ink cartridge for eliminating gas in the ink pipeline;

The first ultrasonic detector is installed on an ink line between the defoamer and the ink inlet circulation gear pump for detecting whether the ink line of the outlet section of the ink inlet circulation gear pump has ink flow.

Optionally, the first ultrasonic detector adopts a collimator type ultrasonic detector, and the first ultrasonic detector is held on the ink pipeline according to a preset angle;

When the ink in the ink line flows, the ultrasonic signal emitted by the transmitting end of the first ultrasonic detector is blocked by the ink in the ink line, and the receiving end of the first ultrasonic detector cannot Receiving an ultrasonic signal; determining that the ink inlet circulation gear pump is operating normally;

When there is no ink flowing in the ink pipeline, the ultrasonic signal emitted by the transmitting end of the first ultrasonic detector is received by the receiving end of the first ultrasonic detector; then it is determined that the ink inlet circulating gear pump has Wear, remind the replacement of the ink inlet circulation gear pump.

Optionally, the method further includes: a second ultrasonic detector;

The second ultrasonic detector is installed on the ink line between the ink outlet circulation gear pump and the ink outlet ink cartridge, and is used for detecting whether the ink pipeline of the outlet section of the ink outlet circulation gear pump has The ink flows.

Optionally, the second ultrasonic detector adopts a collimator type ultrasonic detector, and the second ultrasonic detector is held on the ink pipeline according to a preset angle;

When there is ink flowing in the ink line, an ultrasonic signal emitted from a transmitting end of the second ultrasonic detector is blocked by ink in the ink line, and a receiving end of the second ultrasonic detecting device cannot receive Obtaining an ultrasonic signal; determining that the ink outlet circulation gear pump is operating normally;

When there is no ink flowing in the ink pipeline, the ultrasonic signal emitted by the transmitting end of the second ultrasonic detector is received by the receiving end of the second ultrasonic detector; then it is determined that the ink outlet circulating gear pump has Wear, remind the replacement of the ink outlet cycle gear pump.

Optionally, the method further includes: an electronic vacuum proportional valve, a damping valve, and a three-way valve;

The electronic vacuum proportional valve, the damping valve and the three-way valve are installed on the ink line between the ink inlet buffer tank and the ink outlet buffer tank for controlling the pressure at both ends of the nozzle.

Optionally, the method further includes: a third ultrasonic detector;

The third ultrasonic detector is mounted on the ink line between the damping valve and the three-way valve for detecting whether ink flow between the damping valve and the three-way valve has ink flow.

Optionally, the third ultrasonic detector adopts a collimator type ultrasonic detector, and the third ultrasonic detector is held on the ink pipeline according to a preset angle;

When there is no ink flowing in the ink pipeline, the ultrasonic signal emitted by the transmitting end of the third ultrasonic detector is received by the receiving end of the third ultrasonic detector; then it is determined that there is no ink in the electronic vacuum proportional valve enter;

When there is ink flowing in the ink line, an ultrasonic signal emitted from a transmitting end of the third ultrasonic detector is blocked by ink in the ink line, and a receiving end of the third ultrasonic detecting device cannot receive To the ultrasonic signal; determining that there is ink entering in the electronic vacuum proportional valve, and controlling the damping valve to cut off the ink line.

In a second aspect, the invention provides a printer, the ceramic inkjet printer ink path of any of the first aspects.

The inkjet printer ink path and the printer provided by the invention provide at least one ultrasonic detector between the driving component and the ink cartridge, thereby real-time monitoring the ink line of the outlet section of the driving component by using the ultrasonic detector, and discovering the driving When the component is abnormal, promptly replace the drive component to avoid nozzle clogging and prolong the service life of the nozzle.

DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, a brief description of the drawings used in the embodiments or the prior art description will be briefly described below. Obviously, the drawings in the following description It is a certain embodiment of the present invention, and other drawings can be obtained from those skilled in the art without any inventive labor.

1 is a schematic structural view of a ceramic inkjet printer;

2 is a schematic structural view of an ink path of a ceramic inkjet printer according to Embodiment 1 of the present invention;

Description of the reference signs:

1-ink bucket;

2-ink pump;

3-inlet buffer tank;

4-ink inlet circulation gear pump;

5-first ultrasonic detector;

6-defoamer;

7- Ink cartridge;

8-sprinkler;

9-ink outlet cartridge;

10-ink outlet buffer tank;

11-Ink outlet circulation gear pump;

12-second ultrasonic detector;

13-electronic vacuum proportional valve;

14-damper valve;

15-third ultrasonic detector;

16-three-way valve.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. It is a partial embodiment of the invention, and not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

The terms "first", "second", "third", "fourth", etc. (if present) in the specification and claims of the present invention and the above figures are used to distinguish similar objects without being used for Describe a specific order or order. It is to be understood that the data so used may be interchanged as appropriate, such that the embodiments of the invention described herein can be implemented, for example, in a sequence other than those illustrated or described herein. In addition, the terms "comprises" and "comprises" and "the" and "the" are intended to cover a non-exclusive inclusion, for example, a process, method, system, product, or device that comprises a series of steps or units is not necessarily limited to Those steps or units may include other steps or units not explicitly listed or inherent to such processes, methods, products or devices.

The technical solutions of the present invention will be described in detail below with specific embodiments. The following specific embodiments may be combined with each other, and the same or similar concepts or processes may not be described in some embodiments.

In the following, some of the terms in this application are explained so as to be understood by those skilled in the art:

1) Ceramic inkjet printer refers to a printer that outputs images using ink dot control technology, which can print patterns on any material.

The ceramic inkjet printer ink path provided by the invention can be applied to existing ceramic inkjet printers. 1 is a schematic structural view of a ceramic inkjet printer, comprising a cover, an ink path circulation device, and a printing unit. The cover is provided with a plurality of inkjet printing units, each of which is provided with a printing nozzle, and the ink path is cycled. The device delivers ink to the printheads of each inkjet printing unit. Among them, the ink path circulation device uses a gear pump to adjust the ink circulation speed in the ink path in real time, and uses a vacuum proportional valve to control the negative pressure in the ink path to maintain the ink path pressure stable.

However, since the ceramic ink contains ceramic powder, when the gear pump is used for circulating speed regulation, the gear in the gear pump is worn by the ceramic powder as the use time increases. While the worn gear pump can continue to operate, but lacks power, it will cause the ink in the ink path to stop circulating, causing the ink to settle. If the worn gear pump cannot be found and replaced in time, the nozzle will be blocked and the service life of the nozzle will be reduced.

The ceramic inkjet printer ink path provided by the present invention is intended to solve the above technical problems of the prior art.

The technical solutions of the present invention and how the technical solutions of the present application solve the above technical problems will be described in detail below with reference to specific embodiments. The following specific embodiments may be combined with each other, and the same or similar concepts or processes may not be described in some embodiments. Embodiments of the present invention will be described below with reference to the accompanying drawings.

2 is a schematic structural view of an ink path of a ceramic inkjet printer according to Embodiment 1 of the present invention. As shown in FIG. 2, the ink path of the ceramic inkjet printer in this embodiment may include: an ink pipeline, an ink tank, an ink cartridge, a driving assembly, a head 8 and at least one ultrasonic detector, the driving assembly presses ink in the ink tank 1 into the ink cartridge through an ink line, the ink cartridge is connected to the head 8; the ultrasonic detector is installed at Between the driving component and the ink cartridge, it is used to detect whether the outlet of the driving component has ink flow.

In this embodiment, by installing at least one ultrasonic detector between the driving component and the ink cartridge, the ultrasonic detector is used to monitor the ink line of the outlet section of the driving component in real time, and when the abnormality of the driving component is found, the driver is promptly replaced. Components to avoid nozzle blockage and extend the life of the nozzle.

In one embodiment, the ceramic inkjet printer ink path further includes: an ink supply pump 2, an ink inlet buffer tank 3, and an ink outlet buffer tank 10; and the ink cartridge includes an ink inlet ink cartridge 7 and an ink outlet Ink cartridge 9, the drive assembly includes an ink inlet circulation gear pump 4 and an ink outlet circulation gear pump 11; wherein:

The ink supply pump 2 presses the ink in the ink tank 1 into the ink inlet buffer tank 3, and the ink inlet buffer tank 3 communicates with the rear end of the ink inlet ink cartridge 7, the ink feed The mouth circulation gear pump 4 presses the ink in the ink inlet buffer tank 3 to the front end of the ink inlet ink cartridge 7, and the ink of the ink inlet ink cartridge 7 flows through the head 8 to the ink outlet ink cartridge 9. At the front end, the rear end of the ink outlet ink cartridge 9 communicates with the ink discharge port buffer tank 10, and the ink in the ink discharge port buffer tank 10 is returned to the ink outlet ink cartridge 9 through the ink outlet circulation gear pump 11. front end.

In the present embodiment, the ink inlet buffer tank 3 and the ink outlet buffer tank 10 are used as a buffer tank for the ink line for storing and buffering the ink, ensuring that the ink in the ink line is kept sufficient, and alleviating the ink line. pressure. And the ink in the ink inlet buffer tank 3 is pressed into the ink inlet ink cartridge 7 by the ink inlet circulation gear pump 4, and the ink in the ink outlet buffer tank 10 is pressed into the ink using the ink outlet circulation gear pump 11. The ink outlet ink cartridge 9 constitutes a circulation circuit for the flowing ink to prevent clogging of the nozzle due to ink deposition.

In one embodiment, the ceramic inkjet printer ink path further includes: a defoamer 6 and a first ultrasonic detector 5; the defoamer 6 is mounted on the ink inlet circulation gear pump 4 and the It is described on the ink line between the ink cartridges 7 for eliminating the gas in the ink line.

Optionally, the first ultrasonic detector 5 is mounted on an ink line between the defoamer and the ink inlet circulation gear pump 4 for detecting the outlet section of the ink inlet circulation gear pump 4. Whether the ink line has ink flow.

Optionally, the first ultrasonic detector 5 adopts a collimator type ultrasonic detector, and the first ultrasonic detector 5 is held on the ink pipeline at a preset angle.

In this embodiment, when the ink flows in the ink line, the ultrasonic signal emitted by the transmitting end of the first ultrasonic detector 5 is blocked by the ink in the ink line, and the first ultrasonic wave The receiving end of the detector 5 cannot receive the ultrasonic signal; then it is determined that the ink inlet circulating gear pump 4 is operating normally. When no ink flows in the ink line, the ultrasonic signal emitted by the transmitting end of the first ultrasonic detector 5 is received by the receiving end of the first ultrasonic detector 5; then the ink inlet circulating gear is determined The pump 4 is worn, reminding the replacement of the ink inlet circulation gear pump.

In this embodiment, by installing the first ultrasonic detector 5 on the ink line of the outlet section of the ink inlet circulation gear pump 4, it is possible to monitor in real time whether the ink inlet circulation gear pump 4 is operating normally, and when the ink inlet is circulated When the gear pump 4 is operating normally, the ink line is filled with ink. When the ink inlet circulation gear pump 4 is worn, the ink stops circulating in the ink line due to lack of power, and at this time, the ink line held by the first ultrasonic detector 5 will have a vacuum, and the first ultrasonic detector 5 receives The terminal can receive the signal transmitted by the transmitting end of the first ultrasonic detector 5. Therefore, the first ultrasonic detector 5 can detect whether there is ink flowing in the outlet of the ink inlet circulation gear pump 4, thereby judging whether the ink inlet circulation gear pump 4 is worn, and when there is wear, promptly reminding that the replacement has worn out. The gear pump prevents ink from settling and causes the nozzle to clog.

In one embodiment, the ceramic inkjet printer ink path further includes: a second ultrasonic detector 12; the second ultrasonic detector 12 is mounted on the ink outlet circulation gear pump 11 and the ink discharge The ink line between the ink cartridges 9 is used to detect whether or not the ink line of the outlet section of the ink discharge port circulating gear pump 11 has ink flow.

Optionally, the second ultrasonic detector 12 adopts a collimating ultrasonic detector, and the second ultrasonic detector 12 is held on the ink pipeline at a preset angle.

In this embodiment, when ink flows in the ink line, the ultrasonic signal emitted by the transmitting end of the second ultrasonic detector 12 is blocked by the ink in the ink line, and the second ultrasonic detecting The receiving end of the meter 12 cannot receive the ultrasonic signal; thus, it can be determined that the ink outlet circulating gear pump is operating normally. When there is no ink flowing in the ink pipeline, the ultrasonic signal emitted by the transmitting end of the second ultrasonic detector 12 is received by the receiving end of the second ultrasonic detector 12; then the ink outlet circulating gear is determined The pump 11 is worn to remind the replacement of the outlet port circulation gear pump.

In this embodiment, by installing the second ultrasonic detector 12 on the ink line of the outlet section of the ink outlet circulation gear pump 11, it is possible to monitor in real time whether the ink outlet circulation gear pump 11 is operating normally, and when the ink outlet is circulating When the gear pump 11 is operating normally, the ink line is filled with ink. When the ink outlet circulation gear pump 11 is worn, the ink stops circulating in the ink line due to lack of power, and at this time, the ink line held by the second ultrasonic detector 12 is vacuumed, and the second ultrasonic detector 12 receives The terminal can receive the signal transmitted by the transmitting end of the second ultrasonic detector 12. Therefore, the second ultrasonic detector 12 can detect whether there is ink flowing in the outlet of the ink outlet circulation gear pump 11, thereby judging whether the ink circulation gear pump 11 is worn, and when there is wear, promptly reminding that the replacement has worn out. The gear pump prevents ink from settling and causes the nozzle to clog.

In one embodiment, the ceramic inkjet printer ink path further includes: an electronic vacuum proportional valve 13, a damping valve 14, and a three-way valve 16; the electronic vacuum proportional valve 13, the damping valve 14, and the three-way valve 16 It is installed on the ink line between the ink inlet buffer tank 3 and the ink outlet buffer tank 10 for controlling the pressure at both ends of the nozzle 8.

In one embodiment, the ceramic inkjet printer ink path further includes: a third ultrasonic detector 15; the third ultrasonic detector 15 is installed between the damping valve 14 and the three-way valve 16 On the ink line, it is used to detect whether the ink line between the damping valve 14 and the three-way valve 16 has ink flow.

Optionally, the third ultrasonic detector 15 adopts a collimating ultrasonic detector, and the third ultrasonic detector 15 is held on the ink pipeline at a preset angle.

In this embodiment, when there is no ink flowing in the ink pipeline, the ultrasonic signal emitted by the transmitting end of the third ultrasonic detector 15 is received by the receiving end of the third ultrasonic detector 15; No ink enters in the electronic vacuum proportional valve 13. When there is ink flowing in the ink line, the ultrasonic signal emitted from the transmitting end of the third ultrasonic detector 15 is blocked by the ink in the ink line, and the receiving end of the third ultrasonic detector 15 The ultrasonic signal cannot be received; then it is determined that ink is entered in the electronic vacuum proportional valve 13, and the damping valve 14 is controlled to cut off the ink line.

In this embodiment, an electronic vacuum proportional valve 13 is adopted to control the pressure at both ends of the spray head 8. The vacuum proportional valve 13 passes through the damping valve 14, the three-way valve 16, and two buffer tanks (the ink inlet buffer tank 3 and the ink outlet port buffer) Tank 10) connected. A third ultrasonic detector 15 is mounted on the line between the damper valve 14 and the three-way valve 16 to detect whether or not ink is sucked into the electronic vacuum proportional valve 13. When the third ultrasonic detector 15 detects that there is liquid ink in the ink pipeline, a corresponding feedback signal is generated, and the damping valve 14 is controlled to cut off the ink pipeline according to the feedback signal, thereby effectively preventing the ink from entering the electronic vacuum proportional valve 13 and avoiding The electronic vacuum proportional valve 13 is damaged.

Further, since the ink line is cut off, the air path in the ink cartridge is closed, so that the pressure on both sides of the nozzle 8 can be maintained for a period of time, thereby reducing the occurrence of ink drop on the nozzle.

The present invention also provides a printer to which the ink path of the ceramic ink jet printer shown in Fig. 1 is applied. For the implementation process and technical effects, please refer to the related description of the device shown in FIG. 1 , and details are not described herein again.

In this embodiment, the important components in the ink path of the ceramic inkjet printer are monitored and protected by the ultrasonic detector, which effectively reduces the maintenance cost, improves the stability of the ink path of the ceramic inkjet printer, improves the print quality, and prolongs the length. The service life of the nozzle.

In the description of the present invention, it is to be understood that the terms "center", "length", "width", "thickness", "top", "bottom", "upper", "lower", " Left or right, right, front, back, vertical, horizontal, inner, outer, axial, circumferential, etc. The orientation or positional relationship shown in the drawings is merely for the convenience of the description of the present invention and the description of the present invention, and is not intended to indicate or imply that the position or the original is to have a specific orientation, a specific configuration and operation, and therefore cannot be understood as a Limitations of the invention.

In the present invention, the terms "installation", "connected", "connected", "fixed" and the like should be understood broadly, and may be, for example, a fixed connection or a detachable connection, or It can be a mechanical connection, it can be a mechanical connection, or it can be electrically connected or can communicate with each other; it can be directly connected or indirectly connected through an intermediate medium, which can make the internal connection of two components or the interaction of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood on a case-by-case basis.

Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, and are not intended to be limiting; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that The technical solutions described in the foregoing embodiments may be modified, or some or all of the technical features may be equivalently replaced; and the modifications or substitutions do not deviate from the technical solutions of the embodiments of the present invention. range.

Claims (10)

1. An inkjet printer ink path comprising: an ink line, an ink tank, an ink cartridge, a driving component, and a spray head, wherein the driving component presses ink in the ink tank into the ink cartridge through an ink pipeline, the ink cartridge Connected to the spray head, characterized in that it further comprises: at least one ultrasonic detector;

   The ultrasonic detector is installed between the drive assembly and the ink cartridge for detecting whether the outlet of the drive assembly has ink flow.
2. The ink path of the ceramic inkjet printer according to claim 1, further comprising: an ink supply pump, an ink inlet buffer tank, and an ink outlet buffer tank; and the ink cartridge comprises an ink inlet ink cartridge and an ink outlet An ink cartridge, the drive assembly comprising an ink inlet circulation gear pump and an ink outlet circulation gear pump; wherein:

   The ink supply pump presses ink in the ink tank into the ink inlet buffer tank, and the ink inlet buffer tank communicates with a rear end of the ink inlet ink cartridge, and the ink inlet circulation gear pump will The ink in the ink inlet buffer tank is pressed into the front end of the ink inlet ink cartridge, and the ink of the ink inlet ink cartridge flows through the nozzle to the front end of the ink outlet ink cartridge, and the rear end of the ink outlet ink cartridge In communication with the ink outlet buffer tank, the ink in the ink outlet buffer tank is returned to the front end of the ink outlet ink cartridge through the ink outlet circulation gear pump.
3. The inkjet printer ink path according to claim 2, further comprising: a defoamer and a first ultrasonic detector;

   The defoamer is mounted on an ink line between the ink inlet circulation gear pump and the ink inlet ink cartridge for eliminating gas in the ink pipeline;

   The first ultrasonic detector is installed on an ink line between the defoamer and the ink inlet circulation gear pump for detecting whether the ink line of the outlet section of the ink inlet circulation gear pump has ink flow.
4. The ink path of the ceramic ink jet printer according to claim 2 or 3, wherein the first ultrasonic detector adopts a collimator type ultrasonic detector, and the first ultrasonic detector is held at a preset angle On the ink line;

   When the ink in the ink line flows, the ultrasonic signal emitted by the transmitting end of the first ultrasonic detector is blocked by the ink in the ink line, and the receiving end of the first ultrasonic detector cannot Receiving an ultrasonic signal; determining that the ink inlet circulation gear pump is operating normally;

   When there is no ink flowing in the ink pipeline, the ultrasonic signal emitted by the transmitting end of the first ultrasonic detector is received by the receiving end of the first ultrasonic detector; then it is determined that the ink inlet circulating gear pump has Wear, remind the replacement of the ink inlet circulation gear pump.
5. The inkjet printer ink path according to claim 2, further comprising: a second ultrasonic detector;

   The second ultrasonic detector is installed on the ink line between the ink outlet circulation gear pump and the ink outlet ink cartridge, and is used for detecting whether the ink pipeline of the outlet section of the ink outlet circulation gear pump has The ink flows.
6. The ink path of the ceramic ink jet printer according to claim 5, wherein the second ultrasonic detector adopts a collimator type ultrasonic detector, and the second ultrasonic detector holds the ink tube at a preset angle. On the road

   When there is ink flowing in the ink line, an ultrasonic signal emitted from a transmitting end of the second ultrasonic detector is blocked by ink in the ink line, and a receiving end of the second ultrasonic detecting device cannot receive Obtaining an ultrasonic signal; determining that the ink outlet circulation gear pump is operating normally;

   When there is no ink flowing in the ink pipeline, the ultrasonic signal emitted by the transmitting end of the second ultrasonic detector is received by the receiving end of the second ultrasonic detector; then it is determined that the ink outlet circulating gear pump has Wear, remind the replacement of the ink outlet cycle gear pump.
7. The ink path of the ceramic inkjet printer according to claim 2, further comprising: an electronic vacuum proportional valve, a damping valve, and a three-way valve;

   The electronic vacuum proportional valve, the damping valve and the three-way valve are installed on the ink line between the ink inlet buffer tank and the ink outlet buffer tank for controlling the pressure at both ends of the nozzle.
8. The inkjet printer ink path according to claim 7, further comprising: a third ultrasonic detector;

   The third ultrasonic detector is mounted on the ink line between the damping valve and the three-way valve for detecting whether ink flow between the damping valve and the three-way valve has ink flow.
9. The ink path of the ceramic ink jet printer according to claim 8, wherein the third ultrasonic detector adopts a collimator type ultrasonic detector, and the third ultrasonic detector holds the ink tube at a preset angle. On the road

   When there is no ink flowing in the ink pipeline, the ultrasonic signal emitted by the transmitting end of the third ultrasonic detector is received by the receiving end of the third ultrasonic detector; then it is determined that there is no ink in the electronic vacuum proportional valve enter;

   When there is ink flowing in the ink line, an ultrasonic signal emitted from a transmitting end of the third ultrasonic detector is blocked by ink in the ink line, and a receiving end of the third ultrasonic detecting device cannot receive To the ultrasonic signal; determining that there is ink entering in the electronic vacuum proportional valve, and controlling the damping valve to cut off the ink line.
10. A printer characterized by applying the ink path of the ceramic ink jet printer according to any one of claims 1-9.

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