An ink path system

Abstract

This application discloses an ink path system. The ink path system includes: an ink supply module, including a printhead, configured to output ink through the printhead; a flow sensor, configured to detect the flow rate data of the printhead; a level detection module, configured to detect the level data of the ink path system; a pressure detection module, configured to detect the pressure data of the ink path system; a viscosity detection module, configured to detect the viscosity data of the ink in the ink path system; and a control unit, communicating with the ink supply module, flow sensor, level detection module, pressure detection module, and viscosity detection module respectively, configured to acquire flow rate data, level data, pressure data, and viscosity data, and send corresponding control commands based on the flow rate data, level data, pressure data, and viscosity data. By incorporating a flow sensor, level detection module, pressure detection module, and viscosity detection module into the ink path system, this application ensures the stability of the ink path system, thereby improving printing quality.

Description

Technical Field

[0001] This application relates to the field of ink supply technology, and more specifically to an ink path system. Background Technology

[0002] In the digital inkjet industry, a negative pressure circulating ink path system is required to supply ink to the printhead, using various sensors, pumps, valves, and control systems. This ensures a continuous ink supply to the printhead and guarantees the normal operation of the printhead system. However, firstly, for large-format printing systems, existing technologies typically suffer from insufficient ink circulation, uneven ink temperature, and ink sedimentation. Secondly, because existing technologies use intermittent control of the ink supply components, pressure fluctuations are prone to occur, affecting print quality. Finally, existing technologies also rely excessively on negative pressure adjustment to maintain system operation, neglecting the impact of printhead flow rate and ink viscosity on system control parameters. Therefore, existing technologies suffer from poor print quality due to unstable ink properties, volatile system pressure, and incomplete control parameters. Summary of the Invention

[0003] The purpose of this application is to provide an ink path system to solve the problem of poor printing effect caused by unstable ink properties, easy fluctuation of system pressure and one-sided control parameters in the prior art.

[0004] To achieve the above objectives, the first aspect of this application provides an ink path system, which includes:

[0005] The ink supply module, including the printhead, is configured to output ink through the printhead;

[0006] A flow sensor is configured to detect the flow rate data of the nozzle;

[0007] The liquid level detection module is configured to detect the liquid level data of the ink path system;

[0008] The pressure detection module is configured to detect pressure data from the ink system.

[0009] The viscosity detection module is configured to detect the viscosity data of the ink in the ink path system;

[0010] The control unit communicates with the ink supply module, flow sensor, liquid level detection module, pressure detection module, and viscosity detection module respectively. It is configured to acquire flow data, liquid level data, pressure data, and viscosity data, and send corresponding control commands based on the flow data, liquid level data, pressure data, and viscosity data.

[0011] In this embodiment of the application, the ink path system further includes a heating component, and the control unit is further configured to:

[0012] Determine whether the viscosity data is within the first preset range;

[0013] If the viscosity data is not within the first preset range, the heating component is controlled to heat the viscosity data so that it falls within the first preset range.

[0014] In this embodiment of the application, the ink path system further includes a temperature sensor, and the control unit is further configured to:

[0015] Temperature data is acquired through a temperature sensor, and it is determined whether the temperature data is within a second preset range.

[0016] If 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.

[0017] In this embodiment, the ink path system further includes a high-frequency valve and a vacuum control assembly, and the control unit is further configured to:

[0018] If the pressure data of the ink system is not within the third preset range, a pressure control command is sent to the high-frequency valve and vacuum control component to bring the pressure data of the ink system within the third preset range.

[0019] In this embodiment of the application, the ink supply module includes a secondary ink tank, which includes a first ink tank and a second ink tank. The control unit is further configured to:

[0020] Obtain the target flow rate value corresponding to the viscosity data;

[0021] Determine whether the traffic data is greater than or less than the target traffic value;

[0022] If the flow rate is greater than the target flow rate, reduce the level difference and pressure difference of the secondary ink tank to make the flow rate equal to the target flow rate.

[0023] If the flow rate is less than the target flow rate, increase the level difference and pressure difference of the secondary ink tank to make the flow rate equal to the target flow rate.

[0024] The level difference between the two ink tanks is the difference between the level data of the first ink tank and the level data of the second ink tank, and the pressure difference between the two ink tanks is the difference between the pressure data of the first ink tank and the pressure data of the second ink tank.

[0025] In this embodiment, the liquid level detection module includes an analog liquid level detection component, and the control unit is further configured to:

[0026] The liquid level data of the secondary ink tank is collected by an analog liquid level detection component. The liquid level data of the secondary ink tank includes the liquid level data of the first ink tank and the liquid level data of the second ink tank.

[0027] The corresponding control voltage is determined based on the liquid level data of the first ink tank and the liquid level data of the second ink tank, respectively.

[0028] 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 tank.

[0029] In this embodiment, the ink supply module further includes a first circulation pump and a second circulation pump, and the control unit is further configured to:

[0030] Determine whether the liquid level data of the first ink tank and the liquid level data of the second ink tank are greater than the first preset liquid level value;

[0031] If the liquid level in the first ink tank is greater than the first preset liquid level value, the first circulation pump is turned on.

[0032] If the liquid level in the second ink tank is greater than the first preset liquid level value, the second circulation pump is activated.

[0033] In this embodiment, the ink supply module further includes a first ultrasonic sensor and a second ultrasonic sensor, and the control unit is further configured to:

[0034] With the first circulation pump turned on, the first ultrasonic sensor determines whether ink flows through the pipeline of the first circulation pump.

[0035] If ink does not flow through the pipeline of the first circulation pump, a second alarm signal is sent;

[0036] With the second circulation pump turned on, the second ultrasonic sensor determines whether ink flows through the pipeline of the second circulation pump.

[0037] If ink does not flow through the pipeline of the second circulation pump, a third alarm signal is sent.

[0038] In this embodiment, the control voltage includes a first control voltage and a second control voltage, and the ink path system further includes:

[0039] The ink supply filter, connected to the ink supply module, is configured to filter ink;

[0040] The ink supply pump, connected to the ink supply filter, is configured to receive a first control voltage sent by the control unit and pump ink into the ink supply filter according to the first control voltage in order to control the liquid level difference of the secondary ink tank.

[0041] The ink return pump, connected to the ink supply module, is configured to receive a second control voltage sent by the control unit and pump ink into the ink storage tank according to the second control voltage in order to control the liquid level difference of the secondary ink tank.

[0042] The ink reservoir, connected to the ink return pump, is configured to store ink.

[0043] In this embodiment of the application, the pressure detection module includes a first pressure sensor and a second pressure sensor, and 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 acquire the first pressure data of the ink supply filter and send the first pressure data to the control unit.

[0044] The ink supply module also includes a circulation filter, and a second pressure sensor is connected to the circulation filter and configured to acquire second pressure data of the circulation filter and send the second pressure data to the control unit;

[0045] The control unit is also configured to:

[0046] Acquire the first and second pressure data;

[0047] If the first pressure data exceeds the first preset pressure value, a fourth alarm signal is sent.

[0048] If the second pressure data exceeds the second preset pressure value, a fifth alarm signal is sent.

[0049] This application, based on an ink supply module that outputs ink through a printhead, a flow sensor that detects the printhead's flow rate data, a liquid level detection module that detects the liquid level data of the ink path system, a pressure detection module that detects the pressure data of the ink path system, a viscosity detection module that detects the viscosity data of the ink in the ink path system, and a control unit that communicates with the ink supply module, flow sensor, liquid level detection module, pressure detection module, and viscosity detection module respectively to obtain flow rate data, liquid level data, pressure data, and viscosity data, and sends corresponding control commands based on the flow rate data, liquid level data, pressure data, and viscosity data, can ensure the stability of the ink path system, thereby improving printing quality.

[0050] Other features and advantages of the embodiments of this application will be described in detail in the following detailed description section. Attached Figure Description

[0051] The accompanying drawings are provided to further illustrate the embodiments of this application and form part of the specification. They are used together with the following detailed description to explain the embodiments of this application, but do not constitute a limitation on the embodiments of this application. In the drawings:

[0052] Figure 1 The schematic diagram illustrates a structural diagram of an ink path system according to an embodiment of this application;

[0053] Figure 2 The schematic diagram illustrates a structural diagram of an ink path system according to another embodiment of this application.

[0054] Explanation of reference numerals in the attached figures

[0055] 1 First vacuum control component 2 Second vacuum control component

[0056] 3 Solenoid valve 4 First ink tank

[0057] 5 Second ink tank 6 First high-frequency valve

[0058] 7 Second high-frequency valve 8 First photoelectric switch

[0059] 9 Second photoelectric switch 10 First circulating pump

[0060] 11 Second circulation pump 12 First ultrasonic sensor

[0061] 13 Second ultrasonic sensor 14 First ink cartridge

[0062] 15 Second ink cartridge 16 Printhead

[0063] 17 First pressure sensor 18 Second pressure sensor

[0064] 19 Ink supply filter 20 Recirculation filter

[0065] 21 Ink supply pump 22 Ink return pump

[0066] 23 Ink reservoir 24 Solid state relay

[0067] 25 Float switch 26 Temperature sensor

[0068] 27 Second heating component 28 First analog liquid level detection component

[0069] 29 Second analog liquid level detection component Detailed Implementation

[0070] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only for illustration and explanation of the embodiments of this application and are not intended to limit the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0071] It should be noted that if the embodiments of this application involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0072] Furthermore, if the embodiments of this application involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0073] Figure 1 A schematic diagram illustrating the structure of an ink path system according to an embodiment of this application is shown. Figure 1 As shown, this application provides an ink path system, which may include:

[0074] The ink supply module 101 includes a printhead and is configured to output ink through the printhead;

[0075] The flow sensor 102 is configured to detect the flow data of the nozzle;

[0076] The liquid level detection module 103 is configured to detect the liquid level data of the ink system;

[0077] Pressure detection module 104 is configured to detect pressure data of the ink system;

[0078] The viscosity detection module 105 is configured to detect the viscosity data of the ink in the ink path system;

[0079] 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. It is configured to acquire flow data, liquid level data, pressure data, and viscosity data, and send corresponding control commands based on the flow data, liquid level data, pressure data, and viscosity data.

[0080] In this embodiment, the ink supply 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. Figure 2 A schematic diagram illustrating the structure of an ink path system according to another embodiment of this application is shown. Figure 2As shown, the ink supply module 101 includes a first ink tank 4, a second ink tank 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 printhead 16. A flow sensor 102 is connected to the printhead 16 in the ink supply module 101 and can detect the flow rate data of the printhead 16.

[0081] 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 supply system also includes an ink supply pump 21, a return ink pump 22, a solenoid valve 3, a high-frequency valve, and a vacuum control component. The float switch 25 is located in the ink reservoir 23 and is used to detect whether the liquid level in the ink reservoir 23 is too low. If the liquid level in the ink reservoir 23 is too low, it sends a low liquid level signal to the control unit 106. If the control unit 106 continuously receives the low liquid level signal for more than a first preset time, the control unit 106 can send an audible and visual alarm signal to prompt for ink refilling. 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 reservoir 4 through a liquid circuit and is used to detect whether the liquid level in the first ink reservoir 4 is too high. If the liquid level in the first ink reservoir 4 is too high, the first photoelectric switch 8 can send a high liquid level signal to the control unit 106. Upon receiving a high-level signal from the first ink tank, control unit 106 can send control commands to the ink supply pump 21, the high-frequency valve, and the vacuum control component to stop the ink supply pump 21 and to adjust the vacuum level of the ink system to 0, 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 tank 5 via a liquid circuit to detect whether the liquid level in the second ink tank 5 is too high. If the liquid level in the second ink tank 5 is too high, the second photoelectric switch 9 can send a high-level signal to control unit 106. Upon receiving this signal, control unit 106 can send control commands to the ink supply pump 21, the high-frequency valve, and the vacuum control component to stop the ink supply pump 21 and to adjust the vacuum level of the ink system to 0.

[0082] 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. This provides a basis for customer equipment maintenance, reduces the possibility of instability in the ink system due to damage to the ink supply filter 19 and the circulation filter 20, and ensures production continuity. In addition, the vacuum control component can also acquire the pressure data of the first ink tank 4 and the second ink tank 5, and can feed this pressure data back to the control unit 106. One end of the viscosity detection module 105 is connected to the second ink tank 5 via a liquid circuit, and the other end is connected to the ink supply filter 19 via a liquid circuit. It is used to detect the viscosity data of the ink in the ink system.

[0083] Based on the viscosity data, the control unit 106 can determine the target flow rate value corresponding to the viscosity data. By comparing the current flow rate data of the printhead 16 with the target flow rate 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 tank 4 and the second ink tank 5, so that the flow rate data of the printhead 16 is equal to the target flow rate value. This ensures the stability of the ink supply system.

[0084] This application, based on an ink supply module that outputs ink through a printhead, a flow sensor that detects the printhead's flow rate data, a liquid level detection module that detects the liquid level data of the ink path system, a pressure detection module that detects the pressure data of the ink path system, a viscosity detection module that detects the viscosity data of the ink in the ink path system, and a control unit that communicates with the ink supply module, flow sensor, liquid level detection module, pressure detection module, and viscosity detection module respectively to obtain flow rate data, liquid level data, pressure data, and viscosity data, and sends corresponding control commands based on the flow rate data, liquid level data, pressure data, and viscosity data, can ensure the stability of the ink path system, thereby improving printing quality.

[0085] In this embodiment of the application, the ink path system may further include a heating component, and the control unit may further be configured to:

[0086] Determine whether the viscosity data is within the first preset range;

[0087] If the viscosity data is not within the first preset range, the heating component is controlled to heat the viscosity data so that it falls within the first preset range.

[0088] Specifically, such as Figure 2As shown, the control unit 106 can acquire the viscosity data of the ink in the ink path system through the viscosity detection module 105. The first preset range is the viscosity data range that can guarantee printing quality, and can be determined according to the actual situation. To ensure printing quality, the control unit 106 needs to control the ink viscosity data to be maintained within the first preset range. Since the ink viscosity decreases as the temperature rises, when the ink viscosity data is not within the first preset range, the control unit 106 can send a heating control command to the solid-state relay 24, and the solid-state relay 24 outputs current to the heating component. 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 heat the ink to keep the viscosity data within the first preset range.

[0089] like Figure 2 As shown in the embodiments of this application, the ink path system may further include a temperature sensor 26, and the control unit 106 may further be configured to:

[0090] Temperature data is acquired through temperature sensor 26, and it is determined whether the temperature data is within the second preset range;

[0091] If 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.

[0092] Specifically, the ink path system also includes a temperature sensor 26 for detecting the temperature of the ink in the ink path 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.

[0093] In this embodiment, the ink path system may further include a high-frequency valve and a vacuum control component, and the control unit may further be configured to:

[0094] If the pressure data of the ink system is not within the third preset range, a pressure control command is sent to the high-frequency valve and vacuum control component to bring the pressure data of the ink system within the third preset range.

[0095] Specifically, such as Figure 2As shown, the ink supply system includes high-frequency valves and a vacuum control assembly. The high-frequency valves include a first high-frequency valve 6 and a second high-frequency valve 7. The vacuum control assembly includes a first vacuum control assembly 1 and a second vacuum control assembly 2. Both the first high-frequency valve 6 and the second high-frequency valve 7 are located in the gas circuit connected to the atmosphere, while both the first vacuum control assembly 1 and the second vacuum control assembly 2 are located in the gas circuit connected to a vacuum. Through the high-frequency valves and the vacuum control assembly, the pressure of the ink supply system can be stabilized during positive and negative pressure switching, ensuring that the pressure data of the ink supply system remains within a third preset range. In one example, when the solenoid valve 3 completes its action and the ink supply system is under positive pressure, the control unit 106 can control the high-frequency valves to frequently operate, connecting to the atmosphere and releasing compressed gas in the ink supply system, thereby reducing the workload of the vacuum control assembly and preventing overshoot of the ink supply system. Furthermore, when the vacuum level of the secondary ink tank is higher than a preset vacuum threshold, the control unit 106 can also stabilize the pressure data of the secondary ink tank by controlling the high-frequency valves, thus ensuring the stability of ink supply. The preset vacuum threshold is set according to actual conditions.

[0096] like Figure 2 As shown in this embodiment, the ink supply module may include a secondary ink tank, which may include a first ink tank 4 and a second ink tank 5. The control unit 106 may also be configured to:

[0097] Obtain the target flow rate value corresponding to the viscosity data;

[0098] Determine whether the traffic data is greater than or less than the target traffic value;

[0099] If the flow rate is greater than the target flow rate, reduce the level difference and pressure difference of the secondary ink tank to make the flow rate equal to the target flow rate.

[0100] If the flow rate is less than the target flow rate, increase the level difference and pressure difference of the secondary ink tank to make the flow rate equal to the target flow rate.

[0101] The liquid level difference of the two ink tanks is the difference between the liquid level data of the first ink tank 4 and the liquid level data of the second ink tank 5, and the pressure difference of the two ink tanks is the difference between the pressure data of the first ink tank 4 and the pressure data of the second ink tank 5.

[0102] Specifically, to maintain stable flow rate data of printhead 16, control unit 106 can control the level difference and pressure difference of the secondary ink tanks based on the flow rate data and the target flow rate value. The level difference of the secondary ink tanks is the difference between the level data of the first ink tank 4 and the level data of the second ink tank 5, and the pressure difference of the secondary ink tanks is the difference between the pressure data of the first ink tank 4 and the pressure data of the second ink tank 5. Since different viscosity data correspond to different target flow rates, control unit 106 can determine the corresponding target flow rate value based on the current ink viscosity data and judge the relationship between the flow rate data and the target flow rate value. When the flow rate data is greater than the target flow rate value, control unit 106 can send control commands to ink supply pump 21, ink return pump 22, and vacuum control component to reduce the level difference and pressure difference of the secondary ink tanks, so that the flow rate data is equal to the target flow rate value. Similarly, when the flow rate data is less than the target flow rate value, control unit 106 can also send control voltage to ink supply pump 21, ink return pump 22, and vacuum control component to increase the level difference and pressure difference of the secondary ink tanks, so that the flow rate data is equal to the target flow rate value.

[0103] like Figure 2 As shown in this embodiment, the liquid level detection module may include an analog liquid level detection component, and the control unit 106 may also be configured to:

[0104] The liquid level data of the secondary ink tank is collected by the analog liquid level detection component. The liquid level data of the secondary ink tank includes the liquid level data of the first ink tank 4 and the liquid level data of the second ink tank 5.

[0105] The corresponding control voltage is determined based on the liquid level data of the first ink tank 4 and the liquid level data of the second ink tank 5, respectively.

[0106] 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 tank.

[0107] 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 tank 4, and the second analog liquid level detection component 29 is used to detect the liquid level data of the second ink tank 5. Upon obtaining the liquid level data of the first ink tank 4 and the second ink tank 5, the analog liquid level detection components can send these data to the control unit 106. The control unit 106 can determine the corresponding control voltage based on the liquid level data of the first ink tank 4 and the second ink tank 5, and output the control voltage to the ink supply pump 21 and the ink return pump 22 to increase or decrease the liquid level difference between the two ink tanks. 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 fuzzy control principles. In another example, the control unit 106 can determine the corresponding control voltage based on the proportional-integral-derivative (PID) control principle. In this way, the control unit 106 can control the level difference in the secondary ink tank.

[0108] like Figure 2 As shown in the embodiments of this 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 to:

[0109] Determine whether the liquid level data of the first ink tank 4 and the liquid level data of the second ink tank 5 are greater than the first preset liquid level value;

[0110] If the liquid level in the first ink tank 4 is greater than the first preset liquid level value, the first circulation pump 10 is turned on.

[0111] If the liquid level in the second ink tank 5 is greater than the first preset liquid level value, the second circulation pump 11 is turned on.

[0112] Specifically, to ensure ink flow within the ink supply system and reduce the possibility of sedimentation, 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 tank 4 via a liquid circuit to circulate the ink within the first ink tank 4 and the ink within the first ink cartridge 14. The second circulation pump 11 is connected to the second ink tank 5 via a liquid circuit to circulate the ink within the second ink tank 5 and the ink within the second ink cartridge 15. For this purpose, the control unit 106 needs to acquire the liquid level data of the first ink tank 4 and the second ink tank 5 sent by the analog liquid level detection component, and determine whether the liquid level data of the first ink tank 4 and the second ink tank 5 are greater than a first preset liquid level value. The first preset liquid level value refers to the minimum liquid level value of the secondary ink tank when the circulation pump can be turned on, and is determined according to the actual situation. When the liquid level data of the first ink tank 4 is greater than the first preset liquid level value, the first circulation pump 10 is turned on to circulate the ink within the first ink tank 4 and the ink within the first ink cartridge 14. When the liquid level of the second ink tank 5 is greater than the first preset liquid level value, the second circulation pump 11 is turned on to realize the circulation of ink in the second ink tank 5 and ink in the second ink cartridge 15.

[0113] like Figure 2 As shown in this embodiment, 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 to:

[0114] When the first circulation pump 10 is turned on, the first ultrasonic sensor 12 determines whether ink flows through the pipeline of the first circulation pump 10.

[0115] If ink does not flow through the pipeline of the first circulation pump 10, a second alarm signal is sent;

[0116] When the second circulation pump 11 is turned on, the second ultrasonic sensor 13 determines whether ink flows through the pipeline of the second circulation pump 11.

[0117] If ink does not flow through the pipeline of the second circulation pump 11, a third alarm signal is sent.

[0118] 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 via a liquid circuit, and the other end is connected to the first ink cartridge 14 via a liquid circuit, used to detect 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 via a liquid circuit, and the other end is connected to the circulation filter 20 via a liquid circuit, used to detect 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 via the first ultrasonic sensor 12. If ink does not flow through the pipeline of the first circulation pump 10, a second preset time is delayed. If no ink still flows through the pipeline of the first circulation pump 10, the control unit 106 can send a second alarm signal, indicating that the circulation process of ink in the first ink tank 4 and ink in the first ink cartridge 14 has malfunctioned. If the first ultrasonic sensor 12 still cannot detect ink flowing through the pipeline after a third preset time delay, the control unit 106 sends a reset control command to the first circulation pump 10 to control the first circulation pump 10 to reset, thereby reducing the possibility of damaging the first circulation pump 10.

[0119] Similarly, when the second circulation pump 11 is turned on, the control unit 106 uses the second ultrasonic sensor 13 to determine whether ink is flowing through the pipeline of the second circulation pump 11. If ink is not flowing through the pipeline of the second circulation pump 11, a fourth preset time is delayed. If no ink still flows through the pipeline of the second circulation pump 11, the control unit 106 can send a third alarm signal to indicate a malfunction in the circulation process of ink in the second ink tank 5 and ink cartridge 15. After a fifth preset time, if the second ultrasonic sensor 13 still cannot detect ink flowing through the pipeline, the control unit 106 sends a reset control command to the second circulation pump 11 to control the second circulation pump 11 to reset, reducing the possibility of damage to the second circulation pump 11. The second and third alarm signals are both audible and visual alarm signals. The second, third, fourth, and fifth preset times 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 ink circulation process within the ink supply module using 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.

[0120] like Figure 2 As shown in the embodiments of this application, the control voltage includes a first control voltage and a second control voltage, and the ink path system may further include:

[0121] Ink supply filter 19 is connected to the ink supply module and is configured to filter ink;

[0122] The ink supply pump 21, connected to the ink supply filter 19, is configured to receive a 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 tank.

[0123] The ink return pump 22 is connected to the ink supply module and is configured to receive a second control voltage sent by the control unit 106, and pump ink into the ink storage tank 23 according to the second control voltage to control the liquid level difference of the secondary ink tank.

[0124] The ink reservoir 23, connected to the ink return pump 22, is configured to store ink.

[0125] Specifically, the ink supply system also includes an ink supply filter 19 connected to the ink supply module via a liquid circuit, an ink supply pump 21 connected to the ink supply filter via a liquid circuit, a return ink pump 22 connected to the ink supply module via a liquid circuit, and an ink storage tank 23 connected to the return ink pump 22 via a liquid circuit. A viscosity detection module 105 is installed on the liquid circuit connecting the ink supply filter 19 and the ink supply module. The ink supply filter 19 is used to filter the ink pumped out by the ink supply pump 21. When a first control voltage is received from the control unit 106, the ink supply pump 21 can pump ink into the ink supply filter 19 according to the first control voltage. Simultaneously, the return ink pump 22 can receive a second control voltage from the control unit 106 and pump the ink flowing out of the first ink tank 4 into the ink storage tank 23 according to the second control voltage. In this way, the control unit 106 can control the liquid level difference of the two ink tanks by sending control voltages to the ink supply pump 21 and the return ink pump 22.

[0126] like Figure 2 As shown in the embodiment of this 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 acquire the first pressure data of the ink supply filter 19 and send the first pressure data to the control unit 106.

[0127] The ink supply module may also include a circulation filter 20, and a second pressure sensor 18 connected to the circulation filter 20 and configured to acquire second pressure data of the circulation filter 20 and send the second pressure data to the control unit 106;

[0128] The control unit 106 can also be configured to:

[0129] Acquire the first and second pressure data;

[0130] If the first pressure data exceeds the first preset pressure value, a fourth alarm signal is sent.

[0131] If the second pressure data exceeds the second preset pressure value, a fifth alarm signal is sent.

[0132] Specifically, one end of the circulating filter 20 is connected to the second ultrasonic sensor 13 via a liquid circuit, and the other end is connected to the second ink cartridge 15 via a liquid circuit, for filtering ink. The control unit 106 can acquire pressure data of the ink supply filter 19 and the circulating filter 20, and send alarm signals when abnormal conditions occur in the ink supply filter 19 and the circulating filter 20, thereby realizing status monitoring of the ink supply filter 19 and the circulating filter 20. The first pressure sensor 17 is connected to the ink supply filter 19 via a liquid circuit, for acquiring the first pressure data of the ink supply filter 19, and sending the first pressure data to the control unit 106. The second pressure sensor 18 is connected to the circulating filter 20 via a liquid circuit, for acquiring the second pressure data of the circulating filter 20, and sending the second pressure data to the control unit 106. When the control unit 106 acquires the first pressure data and the second pressure data, it determines whether the first pressure data is greater than a first preset pressure value, and whether the second pressure data is greater than a second preset pressure value. The first preset pressure value refers to the critical pressure value that causes damage to the ink supply filter 19. The second preset pressure value refers to the critical pressure value that causes damage to the circulating filter 20. The first preset pressure value and the second preset pressure value are determined according to the actual situation. If the first pressure data exceeds a first preset pressure value, the control unit 106 may send a fourth alarm signal. If the second pressure data exceeds a second preset pressure value, the control unit 106 may send a fifth alarm signal. The fourth and fifth alarm signals can be audible and visual alarm signals. This can prompt the user to replace the ink supply filter 19 or the circulation filter 20, reducing the possibility of damage to the ink supply pump 21 due to clogging of the ink supply filter 19 or damage to the second circulation pump 11 due to clogging of the circulation filter 20, thus protecting the ink supply pump 21 and the second circulation pump 11.

[0133] Those skilled in the art will understand that embodiments of this application can be provided as methods, systems, or computer program products. Therefore, this application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this application can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0134] This application is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this application. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart... Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0135] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0136] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0137] In a typical configuration, a computing device includes one or more processors (CPU), input / output interfaces, network interfaces, and memory.

[0138] Memory may include non-persistent memory in computer-readable media, such as random access memory (RAM) and / or non-volatile memory, such as read-only memory (ROM) or flash RAM. Memory is an example of computer-readable media.

[0139] Computer-readable media includes both permanent and non-permanent, removable and non-removable media that can store information using any method or technology. Information can be computer-readable instructions, data structures, modules of programs, 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 technologies, CD-ROM, digital versatile optical disc (DVD) or other optical storage, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other non-transferable medium that can be used to store information accessible by a computing device. As defined herein, computer-readable media does not include transient computer-readable media, such as modulated data signals and carrier waves.

[0140] It should also be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0141] The above are merely embodiments of this application and are not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

Claims

1. An ink path system, characterized in that, The ink path system includes: An ink supply module, including a printhead, is configured to output ink through the printhead; A flow sensor is configured to detect flow data from the nozzle; The liquid level detection module is configured to detect the liquid level data of the ink path system; The pressure detection module is configured to detect pressure data of the ink system; A viscosity detection module is configured to detect the viscosity data of the 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 acquire the flow data, the liquid level data, the pressure data, and the viscosity data, and send corresponding control commands based on the flow data, the liquid level data, the pressure data, and the viscosity data; The ink supply module includes a two-stage ink tank, which comprises a first ink tank and a second ink tank. The control unit is further configured to: acquire a target flow rate value corresponding to the viscosity data; determine whether the flow rate data is greater than or less than the target flow rate value; if the flow rate data is greater than the target flow rate value, reduce the liquid level difference and pressure difference of the two-stage ink tanks to make the flow rate data equal to the target flow rate value; if the flow rate data is less than the target flow rate value, increase the liquid level difference and pressure difference of the two-stage ink tanks to make the flow rate data equal to the target flow rate value; wherein, the liquid level difference of the two-stage ink tanks is the difference between the liquid level data of the first ink tank and the liquid level data of the second ink tank, and the pressure difference of the two-stage ink tanks is the difference between the pressure data of the first ink tank and the pressure data of the second ink tank.

2. The ink path system according to claim 1, characterized in that, The ink path system also includes a heating component, and the control unit is further configured to: Determine whether the viscosity data is within a first preset range; If the viscosity data is not within the first preset range, the heating component is controlled to heat the viscosity data so that it falls within the first preset range.

3. The ink path system according to claim 2, characterized in that, The ink path system also includes a temperature sensor, and the control unit is further configured to: Temperature data is acquired through the temperature sensor, and it is determined whether the temperature data is within a second preset range; If 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.

4. The ink path system according to claim 1, characterized in that, The ink path system also includes a high-frequency valve and a vacuum control assembly, and the control unit is further configured to: If the pressure data of the ink system is not within the third preset range, a pressure control command is sent to the high-frequency valve and the vacuum control component to bring the pressure data of the ink system within the third preset range.

5. The ink path system according to claim 1, characterized in that, The liquid level detection module includes an analog liquid level detection component, and the control unit is further configured to: The analog liquid level detection component collects the liquid level data of the secondary ink tank, which includes the liquid level data of the first ink tank and the liquid level data of the second ink tank. The corresponding control voltage is determined based on the liquid level data of the first ink tank and the liquid level data of the second ink tank, 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 tank.

6. The ink path system according to claim 5, characterized in that, The ink supply module further includes a first circulation pump and a second circulation pump, and the control unit is further configured to: Determine whether the liquid level data of the first ink tank and the liquid level data of the second ink tank are greater than the first preset liquid level value; If the liquid level in the first ink tank is greater than the first preset liquid level value, control the first circulation pump to start. If the liquid level in the second ink tank is greater than the first preset liquid level value, the second circulation pump is turned on.

7. The ink supply system according to claim 6, wherein 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, the first ultrasonic sensor determines whether the ink flows through the pipeline of the first circulation pump. If 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 determines whether the ink flows through the pipeline of the second circulation pump; If the ink does not flow through the pipeline of the second circulation pump, a third alarm signal is sent.

8. The ink path system according to claim 5, characterized in that, The control voltage includes a first control voltage and a second control voltage, and the ink system further includes: An ink supply filter, connected to the ink supply module, is configured to filter the ink; The ink supply pump, connected to the ink supply filter, is configured to receive 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 tank. The ink return pump is connected to the ink supply module and is configured to acquire a second control voltage sent by the control unit, and pump the ink into the ink storage tank according to the second control voltage to control the liquid level difference of the secondary ink tank; The ink storage tank, connected to the ink return pump, is configured to store the ink.

9. The ink path system according to claim 8, characterized in that, 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 acquire the first pressure data of the ink supply filter and send the first pressure data to the control unit. The ink supply module also includes a circulation filter, and the second pressure sensor is connected to the circulation filter and configured to acquire second pressure data of the circulation filter and send the second pressure data to the control unit; The control unit is also configured to: Acquire the first pressure data and the second pressure data; If the first pressure data is greater than the first preset pressure value, a fourth alarm signal is sent; If the second pressure data is greater than the second preset pressure value, a fifth alarm signal is sent.

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