WO2024119582A1

WO2024119582A1 - Ink path system

Info

Publication number: WO2024119582A1
Application number: PCT/CN2023/070386
Authority: WO
Inventors: 司志涛; 郭帅
Original assignee: 萨克米机械(佛山南海)有限公司
Priority date: 2022-12-05
Filing date: 2023-01-04
Publication date: 2024-06-13
Also published as: CN115848022A

Abstract

The present application discloses an ink path system. The ink path system comprises: an ink supply module, comprising head nozzles and configured to output ink through the head nozzles; a flow sensor, configured to measure flow data of the head nozzles; a liquid level measurement module, configured to measure liquid level data of the ink path system; a pressure measurement module, configured to measure pressure data of the ink path system; a viscosity measurement module, configured to measure viscosity data of ink in the ink path system; and a control unit, separately communicating with the ink supply module, the flow sensor, the liquid level measurement module, the pressure measurement module, and the viscosity measurement module, and configured to acquire the flow data, the liquid level data, the pressure data, and the viscosity data, and send corresponding control instructions according to the flow data, the liquid level data, the pressure data, and the viscosity data. According to the present application, the flow sensor, the liquid level measurement module, the pressure measurement module, and the viscosity measurement module are provided in the ink path system, such that the stability of the ink path system can be guaranteed, thereby improving the printing effect.

Description

An ink path system

CROSS-REFERENCE TO RELATED APPLICATIONS

This application claims the benefit of Chinese patent application 202211551647.4 filed on December 05, 2022, the contents of which are incorporated herein by reference.

Technical Field

The present application relates to the field of ink supply technology, and in particular to an ink path system.

Background technique

In the digital inkjet industry, in order to provide ink to the print head, it is necessary to use a variety of sensors, pumps, valves, control systems, etc. to form a negative pressure circulation ink circuit system to ensure that the nozzles connected to the system obtain a continuous supply of ink and ensure the normal operation of the nozzle system. However, first of all, for large-format printing systems, the existing technology usually has problems such as insufficient ink circulation, uneven ink temperature, and easy precipitation of ink. Secondly, since the existing technology uses intermittent control to control the ink supply component, it is easy to cause pressure fluctuations and affect the printing effect. Finally, the existing technology also has the problem of over-reliance on negative pressure adjustment to maintain system operation and ignoring the impact of nozzle flow and ink viscosity on system control parameters. Therefore, the existing technology has the problem of poor printing effect due to unstable ink properties, easy fluctuations in system pressure, and relatively one-sided control parameters.

Summary of the invention

The purpose of the embodiments of the present application is to provide an ink path system to solve the problem in the prior art of poor printing effect caused by unstable ink properties, easy fluctuation of system pressure and one-sided control parameters.

In order to achieve the above-mentioned object, the first aspect of the present application provides an ink circuit system, the ink circuit system comprising:

An ink supply module, including a nozzle, configured to output ink through the nozzle;

A flow sensor is configured to detect flow data of the sprinkler;

A liquid level detection module is configured to detect liquid level data of the ink path system;

A pressure detection module, configured to detect pressure data of the ink circuit system;

A viscosity detection module, configured to detect viscosity data of ink in the ink path system;

The control unit communicates with the ink supply module, the flow sensor, the liquid level detection module, the pressure detection module and the viscosity detection module respectively, and is configured to obtain flow data, liquid level data, pressure data and viscosity data, and send corresponding control instructions according to the flow data, liquid level data, pressure data and viscosity data.

In the embodiment of the present application, the ink circuit system further includes a heating component, and the control unit is further configured to:

Determining whether the viscosity data is within a first preset range;

When the viscosity data is not within the first preset range, the heating component is controlled to perform heating so that the viscosity data is within the first preset range.

In the embodiment of the present application, the ink circuit system further includes a temperature sensor, and the control unit is further configured as follows:

Acquiring temperature data through a temperature sensor, and determining whether the temperature data is within a second preset range;

When the viscosity data is not within the first preset range and the temperature data is not within the second preset range, a first alarm signal is sent.

In the embodiment of the present application, the ink circuit system further includes a high-frequency valve and a vacuum control component, and the control unit is further configured as follows:

When the pressure data of the ink circuit system is not within the third preset range, a pressure control instruction is sent to the high-frequency valve and the vacuum control component so that the pressure data of the ink circuit system is within the third preset range.

In an embodiment of the present application, the ink supply module includes a secondary ink barrel, the secondary ink barrel includes a first ink barrel and a second ink barrel, and the control unit is further configured as follows:

Obtaining a target flow value corresponding to the viscosity data;

Determine whether the flow data is greater than or less than the target flow value;

When the flow data is greater than the target flow value, the liquid level difference and pressure difference of the secondary ink barrel are reduced so that the flow data is equal to the target flow value;

When the flow data is less than the target flow value, the liquid level difference and pressure difference of the secondary ink barrel are increased to make the flow data equal to the target flow value;

The liquid level difference of the secondary ink barrel is the difference between the liquid level data of the first ink barrel and the liquid level data of the second ink barrel, and the pressure difference of the secondary ink barrel is the difference between the pressure data of the first ink barrel and the pressure data of the second ink barrel.

In the embodiment of the present application, the liquid level detection module includes an analog liquid level detection component, and the control unit is further configured to:

The liquid level data of the secondary ink barrel is collected by using an analog liquid level detection component, wherein the liquid level data of the secondary ink barrel includes the liquid level data of the first ink barrel and the liquid level data of the second ink barrel;

Determine a corresponding control voltage according to the liquid level data of the first ink barrel and the liquid level data of the second ink barrel respectively;

The control voltage is output to the ink supply pump and the ink return pump to increase or decrease the liquid level difference of the secondary ink barrel.

In the embodiment of the present application, the ink supply module further includes a first circulation pump and a second circulation pump, and the control unit is further configured to:

Respectively determine whether the liquid level data of the first ink barrel and the liquid level data of the second ink barrel are greater than a first preset liquid level value;

When the liquid level data of the first ink barrel is greater than the first preset liquid level value, controlling the first circulation pump to start;

When the liquid level data of the second ink barrel is greater than the first preset liquid level value, the second circulation pump is controlled to start.

In the embodiment of the present application, the ink supply module further includes a first ultrasonic sensor and a second ultrasonic sensor, and the control unit is further configured to:

When the first circulation pump is turned on, determining whether ink flows through the pipeline of the first circulation pump by means of the first ultrasonic sensor;

When the ink does not flow through the pipeline of the first circulation pump, a second alarm signal is sent;

When the second circulation pump is turned on, the second ultrasonic sensor is used to determine whether ink flows through the pipeline of the second circulation pump;

When the ink does not flow through the pipeline of the second circulation pump, a third alarm signal is sent.

In the embodiment of the present application, the control voltage includes a first control voltage and a second control voltage, and the ink path system further includes:

an ink supply filter connected to the ink supply module and configured to filter ink;

an ink supply pump connected to the ink supply filter and configured to obtain a first control voltage sent by the control unit and pump ink into the ink supply filter according to the first control voltage to control a liquid level difference of the secondary ink barrel;

The ink return pump is connected to the ink supply module and is configured to obtain a second control voltage sent by the control unit and pump ink into the ink storage barrel according to the second control voltage to control the liquid level difference of the secondary ink barrel;

The ink storage barrel is connected to the ink return pump and is configured to store ink.

In the embodiment of the present application, the pressure detection module includes a first pressure sensor and a second pressure sensor, the pressure data includes first pressure data and second pressure data, the first pressure sensor is connected to the ink supply filter, and is configured to obtain first pressure data of the ink supply filter and send the first pressure data to the control unit;

The ink supply module further includes a circulation filter, the second pressure sensor is connected to the circulation filter, and is configured to obtain second pressure data of the circulation filter and send the second pressure data to the control unit;

The control unit is further configured to:

Acquire first pressure data and second pressure data;

When the first pressure data is greater than the first preset pressure value, sending a fourth alarm signal;

When the second pressure data is greater than the second preset pressure value, a fifth alarm signal is sent.

The present application is based on an ink supply module that outputs ink through a nozzle, a flow sensor that detects flow data of the nozzle, a liquid level detection module that detects liquid level data of the ink circuit system, a pressure detection module that detects pressure data of the ink circuit system, a viscosity detection module that detects viscosity data of ink in the ink circuit system, and a control unit that communicates with the ink supply module, the flow sensor, the liquid level detection module, the pressure detection module and the viscosity detection module respectively to obtain flow data, liquid level data, pressure data and viscosity data, and sends corresponding control instructions according to the flow data, liquid level data, pressure data and viscosity data, so as to ensure the stability of the ink circuit system and thereby improve the printing effect.

Other features and advantages of the embodiments of the present application will be described in detail in the subsequent specific implementation section.

BRIEF DESCRIPTION OF THE DRAWINGS

The accompanying drawings are used to provide a further understanding of the present application and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present application but do not constitute a limitation to the present application. In the accompanying drawings:

FIG1 schematically shows a structural diagram of an ink circuit system according to an embodiment of the present application;

FIG. 2 schematically shows a structural diagram of an ink path system according to another embodiment of the present application.

In the figure: 1. first vacuum control component; 2. second vacuum control component; 3. solenoid valve; 4. first ink barrel; 5. second ink barrel; 6. first high-frequency valve; 7. second high-frequency valve; 8. first photoelectric switch; 9. second photoelectric switch; 10. first circulation pump; 11. second circulation pump; 12. first ultrasonic sensor; 13. second ultrasonic sensor; 14. first ink cartridge; 15. second ink cartridge; 16. nozzle; 17. first pressure sensor; 18. second pressure sensor; 19. ink supply filter; 20. circulation filter; 21. ink supply pump; 22. ink return pump; 23. ink storage barrel; 24. solid-state relay; 25. float switch; 26. temperature sensor; 27. second heating component; 28. first analog liquid level detection component; 29. second analog liquid level detection component.

Detailed ways

In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. It should be understood that the specific implementation methods described herein are only used to illustrate and explain the embodiments of the present application, and are not used to limit the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present application, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

FIG1 schematically shows a structural diagram of an ink circuit system according to an embodiment of the present application. As shown in FIG1 , the present application embodiment provides an ink circuit system, which may include:

The ink supply module 101 includes a nozzle and is configured to output ink through the nozzle;

A flow sensor 102 is configured to detect flow data of the nozzle;

The liquid level detection module 103 is configured to detect the liquid level data of the ink path system;

The pressure detection module 104 is configured to detect pressure data of the ink circuit system;

The viscosity detection module 105 is configured to detect the viscosity data of the ink in the ink path system;

The control unit 106 communicates with the ink supply module 101, the flow sensor 102, the liquid level detection module 103, the pressure detection module 104 and the viscosity detection module 105 respectively, and is configured to obtain flow data, liquid level data, pressure data and viscosity data, and send corresponding control instructions according to the flow data, liquid level data, pressure data and viscosity data.

In an embodiment of the present application, the ink circuit system includes an ink supply module 101, a flow sensor 102, a liquid level detection module 103, a pressure detection module 104, a viscosity detection module 105 and a control unit 106. FIG. 2 schematically shows a structural diagram of an ink circuit system according to another embodiment of the present application. As shown in FIG. 2, the ink supply module 101 includes a first ink barrel 4, a second ink barrel 5, a first ink cartridge 14, a second ink cartridge 15, a first circulation pump 10, a second circulation pump 11, a first ultrasonic sensor 12, a second ultrasonic sensor 13 and a nozzle 16. The flow sensor 102 is connected to the nozzle 16 in the ink supply module 101 and can detect the flow data of the nozzle 16.

The liquid level detection module 103 includes a float switch 25, a first photoelectric switch 8, a second photoelectric switch 9 and an analog liquid level detection component. The ink circuit system also includes an ink supply pump 21, an ink return pump 22, a solenoid valve 3, a high-frequency valve and a vacuum control component. The float switch 25 is arranged in the ink storage barrel 23, and is used to detect whether the liquid level of the ink storage barrel 23 is too low, and when the liquid level of the ink storage barrel 23 is too low, a signal of a low liquid level in the ink storage barrel is fed back to the control unit 106. If the control unit 106 continues to receive a signal of a low liquid level in the ink storage barrel for more than a first preset time, the control unit 106 can send an audible and visual alarm signal to prompt the ink to be added. The first preset time can be determined according to actual needs, for example, the first preset time can be 5 minutes. The first photoelectric switch 8 is connected to the first ink barrel 4 through a liquid circuit, and is used to detect whether the liquid level of the first ink barrel 4 is super high. When the liquid level of the first ink barrel 4 is super high, the first photoelectric switch 8 can send a first ink barrel super high signal to the control unit 106. When the control unit 106 receives the first ink barrel over-high signal, it can send a control instruction to the ink supply pump 21, the high-frequency valve and the vacuum control component to control the ink supply pump 21 to stop working, and control the high-frequency valve and the vacuum control component to adjust the vacuum degree of the ink path system to 0, thereby reducing the possibility of damage to the vacuum control component and the solenoid valve due to ink suction. Similarly, the second photoelectric switch 9 is connected to the second ink barrel 5 through a liquid circuit to detect whether the liquid level of the second ink barrel 5 is over-high. When the liquid level of the second ink barrel 5 is over-high, the second photoelectric switch 9 can send a second ink barrel over-high signal to the control unit 106. When the control unit 106 receives the second ink barrel over-high signal, it can send a control instruction to the ink supply pump 21, the high-frequency valve and the vacuum control component to control the ink supply pump 21 to stop working, and control the high-frequency valve and the vacuum control component to adjust the vacuum degree of the ink path system to 0.

The pressure detection module 104 includes a first pressure sensor 17 and a second pressure sensor 18, which can detect the pressure data of the ink supply filter 19 and the circulation filter 20 respectively, so as to provide a basis for customers to perform equipment maintenance, reduce the possibility of instability of the ink circuit system caused by damage to the ink supply filter 19 and the circulation filter 20, and ensure production continuity. In addition, the vacuum control component can also obtain the pressure data of the first ink barrel 4 and the second ink barrel 5, and can feed back the pressure data of the first ink barrel 4 and the second ink barrel 5 to the control unit 106. One end of the viscosity detection module 105 is connected to the second ink barrel 5 through a liquid circuit, and the other end is connected to the ink supply filter 19 through a liquid circuit, which is used to detect the viscosity data of the ink in the ink circuit system.

According to the viscosity data, the control unit 106 can determine a target flow value corresponding to the viscosity data. By comparing the flow data of the current nozzle 16 with the target flow value, the control unit 106 can control the vacuum control component, the ink supply pump 21 and the ink return pump 22 to adjust the liquid level difference and pressure difference between the first ink barrel 4 and the second ink barrel 5 so that the flow data of the nozzle 16 is equal to the target flow value. In this way, the stability of ink supply of the ink path system can be ensured.

In the embodiment of the present application, the ink circuit system may further include a heating component, and the control unit may further be configured as follows:

Determining whether the viscosity data is within a first preset range;

Specifically, as shown in FIG2 , through the viscosity detection module 105, the control unit 106 can obtain the viscosity data of the ink in the ink path system. The first preset range is the viscosity data range that can ensure the printing quality, which can be determined according to the actual situation. In order to ensure the quality of printing, the control unit 106 needs to control the viscosity data of the ink to be maintained within the first preset range. Since the viscosity of the ink decreases as the temperature rises, when the viscosity data of the ink is not within the first preset range, the control unit 106 can send a heating control instruction to the solid-state relay 24, and output current to the heating component through the solid-state relay 24. The heating component includes a first heating component (not shown in the figure) and a second heating component 27. The first heating component and the second heating component 27 are heated to make the viscosity data within the first preset range.

As shown in FIG. 2 , in the embodiment of the present application, the ink circuit system may further include a temperature sensor 26 , and the control unit 106 may further be configured as follows:

Acquiring temperature data through the temperature sensor 26, and determining whether the temperature data is within a second preset range;

Specifically, the ink circuit system further includes a temperature sensor 26 for detecting the temperature of the ink in the ink circuit system. When the temperature deviates from the second preset range and the viscosity data is still not within the first preset range, the control unit 106 sends a first alarm signal to indicate that there is a quality problem with the ink. The second preset range varies depending on the actual situation. For example, the first preset range is 8 mPa·s to 20 mPa·s, and the second preset range can be 38 degrees Celsius to 48 degrees Celsius. In this way, the control unit 106 can monitor the ink quality.

In the embodiment of the present application, the ink circuit system may further include a high-frequency valve and a vacuum control component, and the control unit may further be configured as follows:

Specifically, as shown in FIG2 , the ink circuit system includes a high-frequency valve and a vacuum control component. The high-frequency valve includes a first high-frequency valve 6 and a second high-frequency valve 7. The vacuum control component includes a first vacuum control component 1 and a second vacuum control component 2. The first high-frequency valve 6 and the second high-frequency valve 7 are both arranged on a gas circuit connected to the atmosphere, and the first vacuum control component 1 and the second vacuum control component 2 are both arranged on a gas circuit connected to the vacuum. Through the high-frequency valve and the vacuum control component, the pressure of the ink circuit system can be stabilized when the ink circuit system switches between positive and negative pressures, so that the pressure data of the ink circuit system is within a third preset range. In one example, when the solenoid valve 3 completes the action and the ink circuit system is in a positive pressure state, the control unit 106 can control the high-frequency valve to act frequently to connect to the atmosphere and release the compressed gas in the ink circuit system, thereby reducing the workload of the vacuum control component and preventing the ink circuit system from overshooting. In addition, when the vacuum degree of the secondary ink barrel is higher than the preset vacuum degree threshold, the control unit 106 can also stabilize the pressure data of the secondary ink barrel by controlling the high-frequency valve, thereby ensuring the stability of the ink supply. The preset vacuum degree threshold is set according to actual conditions.

As shown in FIG. 2 , in the embodiment of the present application, the ink supply module may include a secondary ink barrel, and the secondary ink barrel may include a first ink barrel 4 and a second ink barrel 5 . The control unit 106 may also be configured as follows:

Obtaining a target flow value corresponding to the viscosity data;

The liquid level difference of the secondary ink barrel is the difference between the liquid level data of the first ink barrel 4 and the liquid level data of the second ink barrel 5 , and the pressure difference of the secondary ink barrel is the difference between the pressure data of the first ink barrel 4 and the pressure data of the second ink barrel 5 .

Specifically, in order to maintain the stability of the flow data of the nozzle 16, the control unit 106 can control the liquid level difference and pressure difference of the secondary ink barrel according to the flow data and the target flow value. The liquid level difference of the secondary ink barrel is the difference between the liquid level data of the first ink barrel 4 and the liquid level data of the second ink barrel 5, and the pressure difference of the secondary ink barrel is the difference between the pressure data of the first ink barrel 4 and the pressure data of the second ink barrel 5. Since different viscosity data correspond to different target flow values, the control unit 106 can determine the corresponding target flow value according to the viscosity data of the current ink, and judge the relationship between the flow data and the target flow value. When the flow data is greater than the target flow value, the control unit 106 can send a control instruction to the ink supply pump 21, the ink return pump 22 and the vacuum control component to reduce the liquid level difference and pressure difference of the secondary ink barrel so that the flow data is equal to the target flow value. Similarly, when the flow data is less than the target flow value, the control unit 106 can also send a control voltage to the ink supply pump 21, the ink return pump 22 and the vacuum control component to increase the liquid level difference and pressure difference of the secondary ink barrel so that the flow data is equal to the target flow value.

As shown in FIG. 2 , in the embodiment of the present application, the liquid level detection module may include an analog liquid level detection component, and the control unit 106 may also be configured as follows:

The liquid level data of the secondary ink barrel is collected by the analog liquid level detection component, and the liquid level data of the secondary ink barrel includes the liquid level data of the first ink barrel 4 and the liquid level data of the second ink barrel 5;

Determine the corresponding control voltage according to the liquid level data of the first ink barrel 4 and the liquid level data of the second ink barrel 5 respectively;

The control voltage is output to the ink supply pump 21 and the ink return pump 22 to increase or decrease the liquid level difference of the secondary ink barrel.

Specifically, the analog liquid level detection component includes a first analog liquid level detection component 28 and a second analog liquid level detection component 29. The first analog liquid level detection component 28 is used to detect the liquid level data of the first ink barrel 4, and the second analog liquid level detection component 29 is used to detect the liquid level data of the second ink barrel 5. In the case of obtaining the liquid level data of the first ink barrel 4 and the liquid level data of the second ink barrel 5, the analog liquid level detection component can send the liquid level data of the first ink barrel 4 and the liquid level data of the second ink barrel 5 to the control unit 106. The control unit 106 can determine the corresponding control voltage according to the liquid level data of the first ink barrel 4 and the liquid level data of the second ink barrel 5, and output the control voltage to the ink supply pump 21 and the ink return pump 22, so as to increase or decrease the liquid level difference of the secondary ink barrels through the ink supply pump 21 and the ink return pump 22. The control voltage includes a first control voltage output to the ink supply pump 21 and a second control voltage output to the ink return pump 22. In one example, the control unit 106 can determine the corresponding control voltage based on the fuzzy control principle. In another example, the control unit 106 may determine the corresponding control voltage based on the proportional-integral-differential control principle. In this way, the control unit 106 may control the level difference of the secondary ink barrels.

As shown in FIG. 2 , in the embodiment of the present application, the ink supply module may further include a first circulation pump 10 and a second circulation pump 11, and the control unit 106 may further be configured as follows:

Determine whether the liquid level data of the first ink barrel 4 and the liquid level data of the second ink barrel 5 are greater than a first preset liquid level value;

When the liquid level data of the first ink barrel 4 is greater than the first preset liquid level value, the first circulation pump 10 is controlled to be turned on;

When the liquid level data of the second ink barrel 5 is greater than the first preset liquid level value, the second circulation pump 11 is controlled to start.

Specifically, in order to ensure the flow of ink in the ink path system and reduce the possibility of precipitation, the ink supply module also includes a first circulation pump 10 and a second circulation pump 11. The first circulation pump 10 is connected to the first ink barrel 4 through a liquid circuit, and is used to realize the circulation of the ink in the first ink barrel 4 and the ink in the first ink cartridge 14. The second circulation pump 11 is connected to the second ink barrel 5 through a liquid circuit, and is used to realize the circulation of the ink in the second ink barrel 5 and the ink in the second ink cartridge 15. To this end, the control unit 106 needs to obtain the liquid level data of the first ink barrel 4 and the liquid level data of the second ink barrel 5 sent by the analog liquid level detection component, and respectively determine whether the liquid level data of the first ink barrel 4 and the liquid level data of the second ink barrel 5 are greater than the first preset liquid level value. The first preset liquid level value refers to the minimum liquid level value of the secondary ink barrel when the circulation pump can be turned on, which is determined according to actual conditions. When the liquid level data of the first ink barrel 4 is greater than the first preset liquid level value, the first circulation pump 10 is controlled to be turned on to realize the circulation of the ink in the first ink barrel 4 and the ink in the first ink cartridge 14. When the liquid level data of the second ink barrel 5 is greater than the first preset liquid level value, the second circulation pump 11 is controlled to start, so as to realize the circulation of the ink in the second ink barrel 5 and the ink in the second ink cartridge 15 .

As shown in FIG. 2 , in the embodiment of the present application, the ink supply module may further include a first ultrasonic sensor 12 and a second ultrasonic sensor 13, and the control unit 106 may further be configured as follows:

When the first circulation pump 10 is turned on, the first ultrasonic sensor 12 is used to determine whether ink flows through the pipeline of the first circulation pump 10;

When the ink does not flow through the pipeline of the first circulation pump 10, a second alarm signal is sent;

When the second circulation pump 11 is turned on, the second ultrasonic sensor 13 is used to determine whether ink flows through the pipeline of the second circulation pump 11;

In the case where the ink does not flow through the pipeline of the second circulation pump 11, a third alarm signal is sent.

Specifically, the ink supply module may further include a first ultrasonic sensor 12 and a second ultrasonic sensor 13. One end of the first ultrasonic sensor 12 is connected to the first circulation pump 10 through a liquid circuit, and the other end is connected to the first ink cartridge 14 through a liquid circuit, for detecting whether ink flows through the pipeline of the first circulation pump 10. One end of the second ultrasonic sensor 13 is connected to the second circulation pump 11 through a liquid circuit, and the other end is connected to the circulation filter 20 through a liquid circuit, for detecting whether ink flows through the pipeline of the second circulation pump 11. When the first circulation pump 10 is turned on, the control unit 106 determines whether ink flows through the pipeline of the first circulation pump 10 through the first ultrasonic sensor 12. When the ink does not flow through the pipeline of the first circulation pump 10, the second preset time is delayed. If there is still no ink flowing through the pipeline of the first circulation pump 10, the control unit 106 may send a second alarm signal to indicate that the circulation process of the ink in the first ink barrel 4 and the ink in the first ink cartridge 14 is faulty. After the third preset delay time, if the first ultrasonic sensor 12 still cannot detect the ink flowing through the pipeline, the control unit 106 sends a reset control instruction to the first circulation pump 10 to control the first circulation pump 10 to reset and reduce the possibility of damaging the first circulation pump 10.

Similarly, when the second circulation pump 11 is turned on, the control unit 106 determines whether the ink flows through the pipeline of the second circulation pump 11 through the second ultrasonic sensor 13. When the ink does not flow through the pipeline of the second circulation pump 11, the fourth preset time is delayed. If there is still no ink flowing through the pipeline of the second circulation pump 11, the control unit 106 can send a third alarm signal to prompt that the circulation process of the ink in the second ink barrel 5 and the ink in the second ink cartridge 15 has a fault. After the fifth preset time is delayed, if the second ultrasonic sensor 13 still cannot detect the ink flowing through the pipeline, the control unit 106 sends a reset control instruction to the second circulation pump 11 to control the second circulation pump 11 to reset and reduce the possibility of damaging the second circulation pump 11. Among them, the second alarm signal and the third alarm signal are both sound and light alarm signals, and the second preset time, the third preset time, the fourth preset time and the fifth preset time can be determined according to actual conditions. For example, the second preset time can be 1 minute, the third preset time can be 2 minutes, the fourth preset time can be 1 minute, and the fifth preset time can be 2 minutes. By monitoring the circulation process of the ink in the ink supply module through the first ultrasonic sensor 12 and the second ultrasonic sensor 13 , the first circulation pump 10 and the second circulation pump 11 can be effectively protected.

As shown in FIG. 2 , in the embodiment of the present application, the control voltage includes a first control voltage and a second control voltage, and the ink path system may further include:

an ink supply filter 19, connected to the ink supply module and configured to filter ink;

The ink supply pump 21 is connected to the ink supply filter 19 and is configured to obtain the first control voltage sent by the control unit 106 and pump ink into the ink supply filter according to the first control voltage to control the liquid level difference of the secondary ink barrel;

The ink return pump 22 is connected to the ink supply module and is configured to obtain the second control voltage sent by the control unit 106 and pump ink into the ink storage barrel 23 according to the second control voltage to control the liquid level difference of the secondary ink barrel;

The ink storage barrel 23 is connected to the ink return pump 22 and is configured to store ink.

Specifically, the ink circuit system further includes an ink supply filter 19 connected to the ink supply module through a liquid circuit, an ink supply pump 21 connected to the ink supply filter through a liquid circuit, an ink return pump 22 connected to the ink supply module through a liquid circuit, and an ink storage barrel 23 connected to the ink return pump 22 through a liquid circuit. A viscosity detection module 105 is provided on the liquid circuit connecting the ink supply filter 19 to the ink supply module. The ink supply filter 19 is used to filter the ink pumped out by the ink supply pump 21. When the first control voltage sent by the control unit 106 is obtained, the ink supply pump 21 can pump the ink into the ink supply filter 19 according to the first control voltage. At the same time, the ink return pump 22 can receive the second control voltage sent by the control unit 106, and pump the ink flowing out of the first ink barrel 4 into the ink storage barrel 23 according to the second control voltage. In this way, the control unit 106 can control the liquid level difference of the secondary ink barrel by sending the control voltage to the ink supply pump 21 and the ink return pump 22.

As shown in FIG. 2 , in the embodiment of the present application, the pressure detection module may include a first pressure sensor 17 and a second pressure sensor 18, and the pressure data may include first pressure data and second pressure data. The first pressure sensor 17 is connected to the ink supply filter 19 and is configured to obtain the first pressure data of the ink supply filter 19 and send the first pressure data to the control unit 106;

The ink supply module may further include a circulation filter 20, and the second pressure sensor 18 is connected to the circulation filter 20, and is configured to obtain second pressure data of the circulation filter 20 and send the second pressure data to the control unit 106;

The control unit 106 may also be configured to:

Acquire first pressure data and second pressure data;

Specifically, one end of the circulation filter 20 is connected to the second ultrasonic sensor 13 through a liquid circuit, and the other end is connected to the second ink cartridge 15 through a liquid circuit, for filtering ink. The control unit 106 can obtain pressure data of the ink supply filter 19 and the circulation filter 20, and send an alarm signal when an abnormal situation occurs in the ink supply filter 19 and the circulation filter 20, so as to realize state monitoring of the ink supply filter 19 and the circulation filter 20. The first pressure sensor 17 is connected to the ink supply filter 19 through a liquid circuit, and is used to obtain first pressure data of the ink supply filter 19, and send the first pressure data to the control unit 106. The second pressure sensor 18 is connected to the circulation filter 20 through a liquid circuit, and is used to obtain second pressure data of the circulation filter 20, and send the second pressure data to the control unit 106. When the control unit 106 obtains the first pressure data and the second pressure data, it determines whether the first pressure data is greater than the first preset pressure value, and determines whether the second pressure data is greater than the second preset pressure value. The first preset pressure value refers to the pressure critical value that causes damage to the ink supply filter 19. The second preset pressure value refers to the pressure critical value that causes damage to the circulation filter 20. The first preset pressure value and the second preset pressure value are determined according to actual conditions. When the first pressure data is greater than the first preset pressure value, the control unit 106 may send a fourth alarm signal. When the second pressure data is greater than the second preset pressure value, the control unit 106 may send a fifth alarm signal. The fourth alarm signal and the fifth alarm signal may be sound and light alarm signals. In this way, it may be prompted that the ink supply filter 19 or the circulation filter 20 needs to be replaced, thereby reducing the possibility of damage to the ink supply pump 21 due to blockage of the ink supply filter 19 or damage to the second circulation pump 11 due to blockage of the circulation filter 20, thereby protecting the ink supply pump 21 and the second circulation pump 11.

Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems, or computer program products. Therefore, the present application may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment in combination with software and hardware. Moreover, the present application may adopt the form of a computer program product implemented in one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) that contain computer-usable program code.

The present application is described with reference to the flowchart and/or block diagram of the method, device (system) and computer program product according to the embodiment of the present application. It should be understood that each process and/or box in the flowchart and/or block diagram, and the combination of the process and/or box in the flowchart and/or block diagram can be realized by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device produce a device for realizing the function specified in one process or multiple processes in the flowchart and/or one box or multiple boxes in the block diagram.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing device to work in a specific manner, so that the instructions stored in the computer-readable memory produce a manufactured product including an instruction device that implements the functions specified in one or more processes in the flowchart and/or one or more boxes in the block diagram.

These computer program instructions may also be loaded onto a computer or other programmable data processing device so that a series of operational steps are executed on the computer or other programmable device to produce a computer-implemented process, whereby the instructions executed on the computer or other programmable device provide steps for implementing the functions specified in one or more processes in the flowchart and/or one or more boxes in the block diagram.

In a typical configuration, a computing device includes one or more processors (CPU), input/output interfaces, network interfaces, and memory.

Memory may include non-permanent storage in a computer-readable medium, in the form of random access memory (RAM) and/or non-volatile memory, such as read-only memory (ROM) or flash memory (flash RAM). Memory is an example of a computer-readable medium.

Computer readable media include permanent and non-permanent, removable and non-removable media that can be implemented by any method or technology to store information. Information can be computer readable instructions, data structures, program modules or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technology, compact disk read-only memory (CD-ROM), digital versatile disk (DVD) or other optical storage, magnetic cassettes, magnetic disk storage or other magnetic storage devices or any other non-transmission media that can be used to store information that can be accessed by a computing device. As defined in this article, computer readable media does not include temporary computer readable media (transitory media), such as modulated data signals and carrier waves.

It should also be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, commodity or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, commodity or device. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the process, method, commodity or device including the elements.

The above are only embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included within the scope of the claims of the present application.

Claims

An ink circuit system, characterized in that the ink circuit system comprises:

An ink supply module, including a nozzle, configured to output ink through the nozzle;

A flow sensor configured to detect flow data of the nozzle;

A liquid level detection module, configured to detect liquid level data of the ink path system;

A pressure detection module, configured to detect pressure data of the ink circuit system;

A viscosity detection module, configured to detect viscosity data of ink in the ink path system;

The control unit communicates with the ink supply module, the flow sensor, the liquid level detection module, the pressure detection module and the viscosity detection module respectively, and is configured to obtain the flow data, the liquid level data, the pressure data and the viscosity data, and send corresponding control instructions according to the flow data, the liquid level data, the pressure data and the viscosity data.
The ink circuit system according to claim 1, characterized in that the ink circuit system further comprises a heating component, and the control unit is further configured to:

Determining whether the viscosity data is within a first preset range;

When the viscosity data is not within the first preset range, the heating component is controlled to perform heating so that the viscosity data is within the first preset range.
The ink circuit system according to claim 2, characterized in that the ink circuit system further comprises a temperature sensor, and the control unit is further configured to:

Acquiring temperature data through the temperature sensor, and determining whether the temperature data is within a second preset range;

When the viscosity data is not within the first preset range and the temperature data is not within the second preset range, a first alarm signal is sent.
The ink circuit system according to claim 1, characterized in that the ink circuit system further comprises a high-frequency valve and a vacuum control component, and the control unit is further configured to:

When the pressure data of the ink circuit system is not within the third preset range, a pressure control instruction is sent to the high-frequency valve and the vacuum control component so that the pressure data of the ink circuit system is within the third preset range.
The ink circuit system according to claim 1, characterized in that the ink supply module includes a secondary ink barrel, the secondary ink barrel includes a first ink barrel and a second ink barrel, and the control unit is further configured to:

Obtaining a target flow value corresponding to the viscosity data;

Determining whether the flow data is greater than or less than the target flow value;

When the flow data is greater than the target flow value, reducing the liquid level difference and the pressure difference of the secondary ink barrel so that the flow data is equal to the target flow value;

When the flow data is less than the target flow value, increasing the liquid level difference and the pressure difference of the secondary ink barrel so that the flow data is equal to the target flow value;

The liquid level difference of the secondary ink barrel is the difference between the liquid level data of the first ink barrel and the liquid level data of the second ink barrel, and the pressure difference of the secondary ink barrel is the difference between the pressure data of the first ink barrel and the pressure data of the second ink barrel.
The ink circuit system according to claim 5, characterized in that the liquid level detection module includes an analog liquid level detection component, and the control unit is further configured to:

The liquid level data of the secondary ink barrel is collected by the analog liquid level detection component, and the liquid level data of the secondary ink barrel includes the liquid level data of the first ink barrel and the liquid level data of the second ink barrel;

Determining corresponding control voltages according to the liquid level data of the first ink barrel and the liquid level data of the second ink barrel respectively;

The control voltage is output to the ink supply pump and the ink return pump to increase or decrease the liquid level difference of the secondary ink barrel.
The ink circuit system according to claim 6, characterized in that the ink supply module further comprises a first circulation pump and a second circulation pump, and the control unit is further configured to:

respectively determining whether the liquid level data of the first ink barrel and the liquid level data of the second ink barrel are greater than a first preset liquid level value;

When the liquid level data of the first ink barrel is greater than a first preset liquid level value, controlling the first circulation pump to start;

When the liquid level data of the second ink barrel is greater than the first preset liquid level value, the second circulation pump is controlled to start.
According to the ink circuit system of claim 7, the ink supply module further comprises a first ultrasonic sensor and a second ultrasonic sensor, and the control unit is further configured to:

When the first circulation pump is turned on, determining whether the ink flows through a pipeline of the first circulation pump by using the first ultrasonic sensor;

When the ink does not flow through the pipeline of the first circulation pump, sending a second alarm signal;

When the second circulation pump is turned on, determining whether the ink flows through a pipeline of the second circulation pump by using the second ultrasonic sensor;

When the ink does not flow through the pipeline of the second circulation pump, a third alarm signal is sent.
The ink circuit system according to claim 6, characterized in that the control voltage includes a first control voltage and a second control voltage, and the ink circuit system further includes:

an ink supply filter, connected to the ink supply module and configured to filter the ink;

The ink supply pump is connected to the ink supply filter and is configured to obtain a first control voltage sent by the control unit and pump the ink into the ink supply filter according to the first control voltage to control the liquid level difference of the secondary ink barrel;

The ink return pump is connected to the ink supply module and is configured to obtain a second control voltage sent by the control unit, and pump the ink into the ink storage barrel according to the second control voltage to control the liquid level difference of the secondary ink barrel;

The ink storage barrel is connected to the ink return pump and is configured to store the ink.
The ink circuit system according to claim 9, characterized in that the pressure detection module comprises a first pressure sensor and a second pressure sensor, the pressure data comprises first pressure data and second pressure data, the first pressure sensor is connected to the ink supply filter, and is configured to obtain first pressure data of the ink supply filter and send the first pressure data to the control unit;

The ink supply module further includes a circulation filter, the second pressure sensor is connected to the circulation filter, and is configured to obtain second pressure data of the circulation filter and send the second pressure data to the control unit;

The control unit is further configured to:

acquiring the first pressure data and the second pressure data;

When the first pressure data is greater than a first preset pressure value, sending a fourth alarm signal;

When the second pressure data is greater than the second preset pressure value, a fifth alarm signal is sent.