A scanning inkjet apparatus and a method of cleaning a printhead

Abstract

The embodiment of the present application provides a scanning inkjet equipment and a nozzle cleaning method, wherein the equipment comprises a nozzle moving module, a guide rail and a first ink receiving container, the nozzle moving module is integrated with a plurality of nozzles, the nozzle moving module is slidably connected with the guide rail, the first ink receiving container is arranged in a preset cleaning area arranged at one end of the guide rail, the jetting direction of the nozzle is perpendicular to the plane where the top opening of the first ink receiving container is located, and the nozzle is in a state of moving ink in a piezoelectric inkjet mode during the movement of the nozzle above the first ink receiving container along the guide rail. The present application improves the cleaning efficiency of the nozzle of the scanning inkjet equipment.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of printing technology, in particular to a scanning inkjet device and a nozzle cleaning method. BACKGROUND

[0002] An inkjet printer is a device that prints images by spraying ink through nozzles. When the ink in the nozzles solidifies and causes blockage, the inkjet printer will not be able to print images normally.

[0003] In order to avoid nozzle blockage, the nozzle is usually moved to a non-image printing area and then controlled to press ink to remove the solidified ink in the nozzle. Ink press refers to the process of adjusting the pressure inside the nozzle to press out the solidified ink. During the pressurization process, the pressure gradually rises, which causes non-solidified ink to be contaminated on the outside of the nozzle due to insufficient pressure and the influence of nozzle airflow. After stopping pressurization, the ink contaminated on the outside of the nozzle will be affected by gravity and will gather at the nozzle opening. After solidification, it will still cause nozzle blockage.

[0004] In order to solve the above problems, the prior art proposes a liftable ink receiving tray provided with a dust suction port. When cleaning the nozzle, the ink receiving tray is controlled to rise to a cleaning height to receive the ink discharged during nozzle ink pressing. After the nozzle ink pressing is completed, the ink receiving tray is continuously controlled to rise so that the dust suction port approaches the nozzle and sucks the residual ink contaminated on the outside of the nozzle. Finally, when there is no residual ink on the outside of the nozzle, the ink receiving tray is controlled to descend to a safe height to avoid collision between the nozzle and the ink receiving tray or the dust suction port when the nozzle moves to the image printing area.

[0005] However, in order to avoid the risk of collision between the ink receiving tray and the nozzle caused by the rapid upward movement of the ink receiving tray, the upward and downward speed of the above-mentioned ink receiving tray is slow, and the nozzle needs to remain stationary during the lifting and lowering of the ink receiving tray, which reduces the efficiency of the entire nozzle cleaning process. SUMMARY

[0006] The purpose of the embodiments of the present application is to provide a scanning inkjet device and a nozzle cleaning method to achieve the purpose of improving the cleaning efficiency of the nozzle of the scanning inkjet device. The specific technical solutions are as follows:

[0007] A scanning inkjet device, the device comprising:

[0008] a nozzle moving module, a guide rail, and a first ink receiving container;

[0009] The nozzle moving module is integrated with a plurality of nozzles, and the nozzle moving module is in sliding connection with the guide rail;

[0010] The first ink receiving container is arranged in a preset cleaning area arranged at one end of the guide rail, and the spray direction of the spray head is perpendicular to the plane where the top opening of the first ink receiving container is located.

[0011] During the movement of the spray head along the guide rail above the first ink receiving container, the spray head is in a state of moving ink in a piezoelectric inkjet manner.

[0012] Optionally, during the movement of the spray head along the guide rail above the first ink receiving container, the distance between the plane where the top opening of the first ink receiving container is located and the spray head is within a preset interval.

[0013] Optionally, the length of the top opening of the first ink receiving container is not less than the inkjet length when the spray head performs the moving ink.

[0014] Optionally, the device further comprises a lifting mechanism arranged in the preset cleaning area, and the lifting mechanism is used to support the first ink receiving container to be lifted before the scanning inkjet device is operated, so that the distance between the plane where the top opening of the first ink receiving container is located and the spray head is within a preset interval.

[0015] Optionally, the first ink receiving container is a container with a reversible cover plate arranged at the bottom.

[0016] Optionally, the spray direction of the spray head moving along the guide rail is perpendicular to the plane where the preset cleaning area is located.

[0017] A spray head cleaning method applied to any one of the scanning inkjet devices described above, the scanning inkjet device comprising a spray head moving module, a guide rail and a first ink receiving container, the method comprising:

[0018] When the cleaning condition is reached, the spray head moving module is controlled to move along the guide rail above the first ink receiving container, and the spray head on the spray head moving module is controlled to be in a moving ink state during the movement above the first ink receiving container.

[0019] Optionally, the method further comprises:

[0020] The moving position of the spray head moving module is monitored, and when the spray head moving module completes one complete movement, the current moving number is updated to a value obtained by adding 1 to the value of the current moving number, wherein the complete movement is the movement of the spray head moving module from any one of the first end and the second end of the guide rail to the other end, the first end is a preset spraying starting end, and the second end is a preset spraying turnaround end.

[0021] If yes, the output content is the output result of the cleaning condition being reached; if no, the operation of monitoring the moving position of the nozzle moving module is performed again, and in the case that the nozzle moving module completes one complete movement, the current moving number is updated to the value of the current moving number plus 1.

[0022] Optionally, the operation of monitoring the moving position of the nozzle moving module comprises:

[0023] The moment when the moving speed of the nozzle moving module changes from zero to non-zero is determined as an initial moment, and based on the initial moment, a time variable and the acceleration of the nozzle moving module at each monitoring moment, the moving distance of the nozzle moving module at each monitoring moment is determined, the monitoring moment is a moment obtained by sequentially adding the time variable to the initial moment, and the moving distance is the distance between the current position at the corresponding monitoring moment and the departure end, the departure end being any one of the first end and the second end.

[0024] For the moving distance at each monitoring moment, the moving distance at the monitoring moment is determined as the current moving distance, and it is judged whether the current moving distance is not less than the distance between the first end and the second end; if yes, the output result of the nozzle moving module completing one complete movement is output; if no, the current moving distance is updated to the moving distance at one monitoring moment after the monitoring moment, and the operation of judging whether the current moving distance is not less than the distance between the first end and the second end is triggered.

[0025] Optionally, the operation of monitoring the moving position of the nozzle moving module comprises:

[0026] In the case that the first trigger signal is received, it is judged whether the second trigger signal is received; if yes, the output result of the nozzle moving module completing one complete movement is output, wherein the first trigger signal is a trigger signal generated when the sensor deployed at the departure end detects that the nozzle moving module leaves, the second trigger signal is a trigger signal generated when the sensor deployed at the destination end detects that the nozzle moving module enters, the departure end being any one of the first end and the second end, and the destination end being the other end of the first end and the second end except the departure end.

[0027] The scanning inkjet equipment and the nozzle cleaning method provided by the embodiment of the present application can realize inkjet in a piezoelectric inkjet mode, and the piezoelectric inkjet mode does not cause residual ink outside the nozzle, so that the residual ink does not need to be sucked by the ink receiving disc in the mode of rising of the ink receiving disc, and the lifting mechanism of the ink receiving disc does not need to be configured. The first ink receiving container of the present application is arranged in the preset cleaning area arranged at one end of the guide rail, and the nozzle can be directly moved above the first ink receiving container to realize inkjet without waiting in a stationary state when piezoelectric inkjet is needed. At the same time, the nozzle is moved above the first ink receiving container in the mode of inkjet while moving, so that the cleaning efficiency of the nozzle can be effectively improved without inkjet in a stationary state. It can be seen that the cleaning efficiency of the nozzle of the scanning inkjet equipment is improved.

[0028] Of course, implementing any product or method of the present application does not necessarily need to achieve all the advantages described above. BRIEF DESCRIPTION OF DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0030] Figure 1 A structure schematic diagram of the scanning inkjet equipment according to an embodiment of the present application is provided.

[0031] Figure 2 A top view of the first ink receiving container according to an optional embodiment of the present application is provided.

[0032] Figure 3 A schematic diagram of the arrangement of the second ink receiving container and the first ink receiving container according to an optional embodiment of the present application is provided.

[0033] Figure 4 A structure schematic diagram of the lifting mechanism according to an optional embodiment of the present application is provided.

[0034] Figure 5 A structure schematic diagram of the support column of the lifting mechanism according to an optional embodiment of the present application is provided.

[0035] Figure 6 A structure schematic diagram of the first ink receiving container according to an optional embodiment of the present application is provided.

[0036] Figure 7 A schematic diagram of the moving position of the nozzle moving module when performing the spraying operation according to an optional embodiment of the present application is provided.

[0037] Figure 8 A flow chart of a nozzle cleaning method provided for an optional embodiment of the present application is shown in the figure;

[0038] Figure 9 A block diagram of a nozzle cleaning device provided for an embodiment of the present application is shown in the figure. DETAILED DESCRIPTION

[0039] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0040] The embodiments of the present application provide a scanning inkjet device, as shown in the figure, which comprises: Figure 1

[0041] a nozzle moving module 101, a guide rail 102 and a first ink receiving container 103.

[0042] The nozzle moving module 101 is integrated with a plurality of nozzles 104, and the nozzle moving module 101 is in sliding connection with the guide rail 102.

[0043] The first ink receiving container 103 is disposed in a preset cleaning area arranged at one end of the guide rail 102, and the ejection direction of the nozzle 104 is perpendicular to the plane where the top opening of the first ink receiving container 103 is located.

[0044] During the movement of the nozzle 104 along the guide rail 102 above the first ink receiving container 103, the nozzle 104 is in a state of moving inkjet in a piezoelectric inkjet manner.

[0045] It should be noted that, in the actual application scenario, the above-mentioned piezoelectric inkjet manner is a kind of inkjet manner that applies voltage to the piezoelectric ceramic arranged near the nozzle of the nozzle, and uniformly sprays the ink by using the deformation of the piezoelectric ceramic. Since the ejection pressure of the piezoelectric inkjet manner is uniform, the nozzle will not store ink outside when inkjet is performed in the piezoelectric inkjet manner.

[0046] Optionally, in an optional embodiment of the present application, the above-mentioned state of moving inkjet can be configured to be performed in the direction in which the nozzle 104 moves along the guide rail 102 to the first ink receiving container 103. The nozzle 104 is not in the state of moving inkjet when it moves from the end where the first ink receiving container 103 is located to the other end of the guide rail.

[0047] ​It should be noted that in actual application scenarios, in order to reduce the vibration generated by the printhead moving module during movement, the scanning inkjet equipment usually sets part of the area at both ends of the guide rail as a deceleration area, that is, when the printhead moving module 101 enters the deceleration area, the printhead moving module 101 will decelerate and finally stop in the deceleration area. Therefore, by configuring the preset cleaning area to be arranged in the deceleration area at one end of the guide rail 102, and configuring the jetting direction of the printhead 104 moving along the guide rail 102 to be perpendicular to the plane where the preset cleaning area is located, when the first ink receiving container 103 is fixedly installed in the preset cleaning area arranged at one end of the guide rail 102, the airflow velocity caused by the movement of the printhead moving module 101 can be reduced by using the deceleration process, thereby reducing the risk of the ink particles remaining in the first ink receiving container 103 being carried out.

[0048] The printhead in the scanning inkjet equipment provided by the application can perform inkjet in a piezoelectric inkjet manner. The piezoelectric inkjet manner does not have residual ink outside the printhead, so it is not necessary to use the way of lifting the ink receiving disc to suck the residual ink, and it is not necessary to configure a lifting mechanism of the ink receiving disc. The first ink receiving container of the application is arranged in the preset cleaning area arranged at one end of the guide rail. When the printhead needs to be cleaned, it can be directly moved above the first ink receiving container for moving inkjet, without the need to wait for a stationary state. At the same time, during the movement of the printhead along the guide rail through the upper part of the first ink receiving container, the printhead moves in the way of moving while inkjet, which can effectively improve the cleaning efficiency of the printhead, without the need to inkjet in a stationary state. It can be seen that the application improves the cleaning efficiency of the printhead of the scanning inkjet equipment.

[0049] Optionally, when the printhead 104 moves along the guide rail 102 through the upper part of the first ink receiving container 103, the distance between the plane where the top opening of the first ink receiving container 103 is located and the printhead 104 is within a preset interval.

[0050] It should be noted that in actual application scenarios, the above-mentioned preset interval is a safe distance interval in which the ink jetted by the printhead 104 will not splash out of the first ink receiving container 103 when the printhead 104 moves along the guide rail 102 through the upper part of the first ink receiving container 103. By configuring the distance between the plane where the top opening of the first ink receiving container 103 is located and the printhead 104 to be within the preset interval, the application avoids the splashing of the jetted ink to the area outside the first ink receiving container 103, thereby avoiding the pollution to the inkjet medium.

[0051] Optionally, the length of the top opening of the first ink container 103 is not less than the ink spraying length when the printhead 104 moves to spray ink. In this way, the length of the top opening of the first ink container 103 can be set according to the different thicknesses of the printing medium, thereby ensuring that the preset area can meet the requirement that the ink can always fall into the first ink container 103 exactly when the printhead 104 moves above the first ink container 103 to spray ink.

[0052] To facilitate understanding of the length of the top opening of the first ink container 103, an optional embodiment of the present invention is described here:

[0053] like Figure 2 The image shown is a top view of the first ink container 103. Figure 2 In the top view shown, the circle represents the nozzle, and the nozzle moves along guide rail 102 from... Figure 2 The printhead moves from position 201 to position 202. During this process, the printhead moves and sprays ink, and the ink strip is the area shown by the dashed box 203. The length X of this ink strip is the ink spray length mentioned above. The length of the top opening of the first ink receiving container 103 is L. Obviously, by configuring the length of the top opening of the first ink receiving container 103 to be no less than the ink spray length when the printhead 104 is moving and spraying ink, it is possible to prevent the ink sprayed by the printhead 104 in the moving ink spraying state from being carried out to other areas of the scanning inkjet device by the airflow generated by the movement of the printhead 104.

[0054] In this embodiment, in order to ensure that the width of the first ink container 103 can be adapted to the width of the printhead 104 to prevent the printhead 104 from ejecting ink outside the first ink container 103 when spraying ink from above it, the width of the top opening of the first ink container 103 can be configured to be no less than the ink spraying width of the printhead 104. (Continue to see...) Figure 2 That is, the width Y of the ink strip 203 is the inkjet width, and the width W of the first ink container 103 is not less than the inkjet width Y.

[0055] Optionally, in another alternative embodiment of the present invention, to prevent the ink ejected by the printhead 104 in the moving inkjet state from being carried out to other areas of the scanning inkjet device by the airflow generated by the movement of the printhead 104, in addition to configuring the top opening length and width of the first ink receiving container 103 to be not less than the inkjet length and inkjet width as described above, a second ink receiving container 105 can also be arranged adjacent to the first ink receiving container 103. Specifically, the second ink receiving container 105 can be a moistening tray of an existing scanning inkjet device. The arrangement of the second ink receiving container and the first ink receiving container can be as follows: Figure 3As shown. The printhead moving module 101 is positioned in the moving direction of one end 106 of the guide rail 102. During the movement of the printhead 104 above the first ink container 103, the printhead 104 is in a state of moving and spraying ink using piezoelectric inkjet technology. The second ink container 105 is positioned as shown... Figure 2 The first ink receiving container 103 is positioned adjacent to the second ink receiving container 105, and there is no gap between the second ink receiving container 105 and the first ink receiving container 103. Clearly, when the printhead 104 exceeds the boundary near one end 106 of the first ink receiving container 103, the airflow generated by the printhead moving module 101 risks carrying the ejected ink out of the first ink receiving container 103. By configuring the second ink receiving container 105, the ink carried out by the airflow can be caught.

[0056] Optionally, in another alternative embodiment of the invention, to avoid such Figure 3 When the printhead 104 moves from section 106 toward the first ink container 103, the airflow carried by the printhead moving module 101 carries the ink particles in the second ink container 105 to the ink-jet medium. The height of the first ink container 103 can be set to be greater than the height of the second ink container 105, so that the first ink container 103 can block the ink particles carried by the airflow in the second ink container 105, thus avoiding the risk of ink particles being carried to the ink-jet medium.

[0057] Optionally, the above are as follows: Figure 1 The scanning inkjet device shown also includes a lifting mechanism deployed in a preset cleaning area. The lifting mechanism is used to support the first ink receiving container for lifting before the scanning inkjet device is operated, so that the distance between the plane where the top opening of the first ink receiving container is located and the printhead is within a preset range.

[0058] It should be noted that in practical applications, when scanning inkjet equipment performs coating operations on different ink-spraying media, the height of the printhead on the plane perpendicular to the ink-spraying media will be adjusted for media of different thicknesses. At this time, because the height of the printhead 104 changes, the distance between the plane containing the top opening of the first ink container 103 and the printhead 104 will also change accordingly. Therefore, this invention configures a lifting mechanism in a preset cleaning area to support the first ink container 103. Before the scanning inkjet equipment operates, the mechanism lifts and lowers the first ink container 103 according to the height of the printhead 104 to ensure that the distance between the plane containing the top opening of the first ink container 103 and the printhead 104 is within a preset range. This avoids the risk of ink leakage or collision between the printhead 104 and the first ink container 103 during cleaning due to changes in the height of the printhead 104 and a fixed height of the first ink container 103.

[0059] It should be noted that, in practical applications, the above-mentioned lifting mechanism can have various different configurations. Here, one example is provided:

[0060] like Figure 4 The diagram shows a structural schematic of a lifting mechanism, wherein, located at Figure 4 The dashed box 402 in support column 401 represents a slot. For example... Figure 5 As shown Figure 4 A structural schematic diagram of the central support column 401. Please refer to the diagram. Figure 4 and Figure 5 The support plate 403 is movably connected to the support column 401 via the drive shafts 405 of two drive motors 404 configured at the bottom. The support column 401 has a slot 402, and serrations 406 are provided in the slot 402. The serrations 406 mesh with the serrations on the drive shaft 405. When the printhead height is adjusted, the drive motors 404 will drive the support plate 403 to move up and down according to the printhead height sent by the host computer. The first ink container is fixedly installed on the upper surface of the support plate 403.

[0061] Optionally, the first ink container 103 is a container with a flip-up cover at the bottom.

[0062] It should be noted that in practical applications, after multiple inkjet printing sessions, a significant amount of ink accumulates in the first ink receiving container 103. As the amount of ink accumulated increases, the vertical distance between the upper surface of the accumulated ink in the first ink receiving container 103 and the printhead 104 gradually decreases. This means that when the upper surface of the accumulated ink in the first ink receiving container 103 is close to the printhead 104, the airflow generated by the printhead moving module 101 will carry the ink particles from the upper surface of the accumulated ink to the inkjet medium, thus contaminating the inkjet medium. Therefore, this invention configures the first ink receiving container 103 as a container with a flip-top cover at the bottom. When a certain amount of ink accumulates, the flip-top cover flips, allowing the accumulated ink to flow out of the first ink receiving container 103 through the gap created by the flip-top cover. This avoids the risk of contaminating the inkjet medium.

[0063] It should be noted that, in practical applications, the structure of the first ink container 103 with a flip-up cover at the bottom can have various forms; one such example is provided here. Figure 6 One example is shown. In this example, the flip-up cover 108 is movably connected to the base plate of the first ink container 103 via two connecting shafts 107.

[0064] Optionally, in another alternative embodiment of the present invention, in addition to the flip-up cover plate configured at the bottom of the first ink receiving container 103 as described above, ink can also be adsorbed by filling the first ink receiving container with ink-absorbing material (such as foam), thereby avoiding the contamination of the inkjet medium by the flying ink.

[0065] Optionally, the spraying direction of the spray head 104 moving along the guide rail 102 is perpendicular to the plane where the preset cleaning area is located.

[0066] It should be noted that in the actual application scenario, by configuring the spraying direction of the spray head 104 moving along the guide rail 102 to be perpendicular to the plane where the preset cleaning area is located, the plane where the top opening of the first ink receiving container 103 fixedly installed in the preset cleaning area is also perpendicular to the spraying direction of the spray head, thereby avoiding the ink sprayed due to the existence of the inclination angle between the spraying direction of the spray head and the top opening of the first ink receiving container 103 from falling outside the first ink receiving container 103, and avoiding the ink sprayed due to the inclination angle from being bounced by the side wall of the first ink receiving container 103 to the spray head, thereby avoiding the risk of blockage caused by the ink remaining outside the spray head 104.

[0067] The embodiment of the present application also provides a spray head cleaning method, which is applied to any one of the scanning inkjet devices as described above and comprises the following steps. Figure 1 The scanning inkjet device comprises a spray head moving module, a guide rail and a first ink receiving container.

[0068] In the case of reaching the cleaning condition, the spray head moving module is controlled to pass above the first ink receiving container along the guide rail, and the spray head on the spray head moving module is controlled to be in the moving ink spraying state during the passing above the first ink receiving container.

[0069] It should be noted that in the actual application scenario, the above-mentioned preset cleaning threshold can be set according to the number of continuous movements of the spray head moving module before the spray head is blocked in the historical maintenance records. The present application controls the spray head moving module to pass above the first ink receiving container along the guide rail for cleaning in the case that the current number of movements of the spray head moving module is greater than the preset cleaning threshold, thereby reducing the cleaning frequency and improving the working efficiency of the scanning inkjet device while ensuring the cleaning quality.

[0070] The present application controls the spray head moving module to pass above the first ink receiving container along the guide rail, and controls the spray head on the spray head moving module to be in the moving ink spraying state during the passing above the first ink receiving container, thereby improving the cleaning efficiency of the spray head without ink spraying in the stationary state.

[0071] Optionally, the above-mentioned spray head cleaning method further comprises the following steps.

[0072] monitoring the moving position of the nozzle moving module, and updating the current moving number to a value obtained by adding 1 to the current moving number in the case that the nozzle moving module completes one complete movement, wherein the complete movement is a movement process in which the nozzle moving module moves from any one of the first end and the second end of the guide rail to the other end, the first end is a preset spraying starting end, and the second end is a preset spraying turnaround end;

[0073] determining whether the current moving number is greater than the preset cleaning threshold, if yes, outputting the output result that the cleaning condition is reached, and if not, returning to the operation step of monitoring the moving position of the nozzle moving module and updating the current moving number to a value obtained by adding 1 to the current moving number in the case that the nozzle moving module completes one complete movement.

[0074] It should be noted that in the actual application scenario, the above-mentioned preset spraying starting end is the initial position of the nozzle moving module on the guide rail when starting to perform the spraying operation. The above-mentioned preset spraying turnaround end is the position of the nozzle moving module on the guide rail when needing to perform the second spraying operation after completing the spraying operation. Specifically, as shown in Figure 7 the moving position schematic diagram of the nozzle moving module when performing the spraying operation. The dashed box 109 is a spraying area, and when performing the spraying operation, the nozzle moving module 101 reciprocally moves in the spraying area along the guide rail 102 and sprays ink to the sprayed medium arranged in the spraying area in the moving process. The dashed box 110 is a preset cleaning area, and the first ink container 103 is installed in the preset cleaning area. Assuming that the moving direction of the nozzle moving module 101 currently performing the spraying operation is the preset cleaning area direction. And the starting position is the preset spraying starting end represented by the dashed box 112. Then after the nozzle moving module 101 moves to the preset spraying turnaround end represented by the dashed box 111, the moving direction of the nozzle moving module 101 will be changed to moving towards the preset spraying starting end.

[0075] Optionally, the above-mentioned monitoring the moving position of the nozzle moving module comprises:

[0076] determining the initial time as the time when the moving speed of the nozzle moving module changes from zero to a non-zero value, and determining the moving distance of the nozzle moving module at each monitoring time based on the initial time, the time variable and the acceleration of the nozzle moving module at each monitoring time, wherein the monitoring time is a time obtained by sequentially adding the time variable to the initial time, the moving distance is the distance between the current position at the corresponding monitoring time and the starting end, and the starting end is any one of the first end and the second end;

[0077] The moving distance at each monitoring moment is determined as the current moving distance, and it is judged whether the current moving distance is not less than the distance between the first end and the second end, if yes, the output result of the nozzle moving module completing a complete movement is output, if not, the current moving distance is updated as the moving distance at a monitoring moment after the monitoring moment, and the operation step of judging whether the current moving distance is not less than the distance between the first end and the second end is triggered.

[0078] Optionally, in an optional embodiment of the present application, the time variable is the time difference between two adjacent monitoring moments, for example, the first monitoring moment is the first second, the second monitoring moment is the second second, and the third monitoring moment is the third second, and the time variable is 1 second, and the initial moment is 0 second.

[0079] In order to facilitate the understanding of the above-mentioned nozzle cleaning method, an optional embodiment of the present application is described as follows:

[0080] As shown in the flow chart of a nozzle cleaning method, the specific operation steps are as follows: Figure 8

[0081] Step S801, when the moving speed of the nozzle moving module is monitored from zero to non-zero, the moving position of the nozzle moving module is monitored, and step S802 is triggered.

[0082] Step S802, based on the initial moment, the time variable and the acceleration of the nozzle moving module at the current monitoring moment, the moving distance of the nozzle moving module at the current monitoring moment is determined, and step S803 is triggered.

[0083] Step S803, it is judged whether the moving distance at the current monitoring moment is not less than the distance between the preset spraying starting end and the preset spraying turning end, if yes, step S804 is triggered, if not, step S805 is triggered.

[0084] Step S804, the output result of the nozzle moving module completing a complete movement is output, and the current moving number is updated as the value of the current moving number plus 1. And step S806 is triggered.

[0085] Step S805, the current monitoring moment is updated as a monitoring moment after the current monitoring moment, and step S802 is executed.

[0086] Step S806, it is judged whether the current moving number is greater than the preset cleaning threshold, if yes, step S807 is triggered, if not, step S801 is executed.

[0087] ​Step S807, control the nozzle moving module to move above the first ink receiving container along the guide rail, and control the nozzles on the nozzle moving module to be in the moving inkjet state during the movement above the first ink receiving container. And trigger step S808.

[0088] Step S808, after each nozzle ends the moving inkjet state, set the current moving number to zero. And trigger step S809.

[0089] Step S809, judge whether to end the printing. If not, return to execute step S801, if yes, end the spraying.

[0090] Optionally, the above monitoring the moving position of the nozzle moving module comprises:

[0091] In the case of receiving the first trigger signal, judge whether the second trigger signal is received, if yes, output the output result of the nozzle moving module completing a complete movement, wherein the first trigger signal is a trigger signal generated when the sensor deployed at the departure end monitors the nozzle moving module to leave, the second trigger signal is a trigger signal generated when the sensor deployed at the destination end monitors the nozzle moving module to enter, the departure end is any one of the first end and the second end, and the destination end is the other end except the departure end among the first end and the second end.

[0092] It should be noted that in actual application scenarios, the working mode of the above-mentioned sensor is various, and one of them is exemplarily provided herein:

[0093] Suppose the sensor is a sensor based on the sliding rheostat principle. When the nozzle moving module is stationary at the departure end, the contact sheet of the nozzle moving module is in full contact with the sensor, which is equivalent to the maximum resistance state of the sliding rheostat. When the nozzle moving module leaves the departure end, the contact area between the contact sheet and the sensor gradually decreases, which is equivalent to the gradually decreasing resistance of the sliding rheostat. When the sensor monitors that the resistance of the sliding rheostat decreases to 0, it indicates that the nozzle moving module completely leaves the departure end, and at this time the sensor generates the first trigger signal.

[0094] Similarly, the process of the nozzle moving module entering the destination end is equivalent to the gradually increasing resistance of the sliding rheostat. When the sensor monitors that the resistance of the sliding rheostat reaches the maximum value, it indicates that the nozzle moving module completely enters the destination end, and at this time the sensor generates the second trigger signal.

[0095] The embodiment of the application also provides a nozzle cleaning device, as shown in the figure, the nozzle cleaning device comprises: Figure 9

[0096] a processor 901;

[0097] a memory 902 for storing executable instructions of the processor 901;​

[0098] The processor 901 is configured to execute instructions to implement any of the nozzle cleaning methods described above.

[0099] The embodiments of the present application also provide a computer readable storage medium, when instructions in the computer readable storage medium are executed by a processor of a nozzle cleaning device, the nozzle cleaning device is enabled to perform any of the nozzle cleaning methods described above.

[0100] The present application is described with reference to flowcharts and / or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the present application. It should be understood that each flow and / or block in the flowcharts and / or block diagrams, and a combination of flows and / or blocks in the flowcharts 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, a special-purpose computer, an embedded processor, or other programmable data processing apparatus to produce a machine, so that the instructions, which are executed via the processor of the computer or other programmable data processing apparatus, generate a means for implementing the functions specified in the flowcharts and / or block diagrams. Figure 1 The functions specified in a flow or multiple flows and / or blocks Figure 1 The functions specified in a flow or multiple flows and / or blocks

[0101] In a typical configuration, the apparatus includes one or more processors (CPUs), memories, and buses. The apparatus can also include input / output interfaces, network interfaces, and the like.

[0102] The memory can include non-persistent memory in the computer readable medium, random access memory (RAM) and / or non-volatile memory, such as read-only memory (ROM) or flash memory (flash RAM), including at least one memory chip. The memory is an example of computer readable media.

[0103] Computer-readable media includes permanent and non-permanent, movable and non-movable media that can be implemented by any method or technology to store information. The 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 technologies, compact disc read-only memory (CD-ROM), digital versatile disc (DVD) or other optical storage, magnetic cassette, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other non-transmission medium that can be used to store information accessible by a computing device. According to the definition herein, computer-readable media does not include transitory media such as modulated data signals and carriers.

[0104] Those skilled in the art will appreciate that embodiments of the present application can be provided as methods, systems or computer program products. Therefore, the present application can take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Moreover, the present application can take the form of a computer program product implemented on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROMs, optical storage, etc.) containing computer-usable program code.

[0105] It should be noted that, in the present text, relational terms such as first and second and the like can only be used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is any such actual relationship or order between these entities or operations. It should also be noted that the terms "comprise", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus including a series of elements includes not only those elements, but also other elements not explicitly listed, or other elements inherent to such a process, method, article or apparatus. Without more limitations, the element defined by the statement "comprises a" does not exclude the presence of another identical element in the process, method, article or apparatus including the element.

[0106] Each of the embodiments in the specification is described in a relevant manner, and the same or similar parts between each of the embodiments can be referred to each other, and each of the embodiments focuses on the difference from other embodiments. In particular, for system embodiments, since they are basically similar to method embodiments, the description is relatively simple, and the relevant parts can be referred to the part of the description of the method embodiment.

[0107] The above merely provides an example of the present application, and is not intended to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present application shall fall into the scope of claims of the present application.

Claims

1. A scanning inkjet apparatus, characterized by, The device comprises: a nozzle moving module, a guide rail, a first ink receiving container and a second ink receiving container; the nozzle moving module is integrated with a plurality of nozzles, and the nozzle moving module is in sliding connection with the guide rail; the first ink receiving container is arranged in a preset cleaning area arranged at one end of the guide rail, and the spraying direction of the nozzles is perpendicular to the plane where the top opening of the first ink receiving container is located; the second ink receiving container is arranged adjacent to the first ink receiving container, the height of the first ink receiving container is greater than the height of the second ink receiving container, and the first ink receiving container can block the ink particles in the second ink receiving container from being carried by the air flow; during the movement of the nozzles above the first ink receiving container along the guide rail, the nozzles are in a state of moving ink in a piezoelectric inkjet manner.

2. The apparatus of claim 1, wherein, When the nozzles pass above the first ink receiving container along the guide rail, the distance between the plane where the top opening of the first ink receiving container is located and the nozzles is within a preset interval.

3. The apparatus of claim 2, wherein, The length of the top opening of the first ink receiving container is not less than the inkjet length when the nozzles perform the moving ink.

4. The apparatus of claim 3, wherein, The device further comprises a lifting mechanism arranged in the preset cleaning area, and the lifting mechanism is used to support the first ink receiving container to lift before the scanning inkjet device is operated, so that the distance between the plane where the top opening of the first ink receiving container is located and the nozzles is within a preset interval.

5. The apparatus of any one of claims 1 to 4, wherein, The first ink receiving container is a container with a reversible cover plate arranged at the bottom.

6. The apparatus of claim 1, wherein, The spraying direction of the nozzles moving along the guide rail is perpendicular to the plane where the preset cleaning area is located.

7. A method of cleaning a showerhead, the method comprising: The method is applied to the scanning inkjet device as claimed in any one of claims 1 to 6, the scanning inkjet device comprises a nozzle moving module, a guide rail, a first ink receiving container and a second ink receiving container, and the method comprises: if the cleaning condition is reached, controlling the nozzle moving module to pass above the first ink receiving container along the guide rail, and controlling the nozzles on the nozzle moving module to be in a moving ink state during the movement above the first ink receiving container.

8. The method of claim 7, wherein, The method further comprises: monitoring the moving position of the nozzle moving module, and updating the current moving number to a value obtained by adding 1 to the current moving number if the nozzle moving module completes a complete movement, wherein the complete movement is the movement of the nozzle moving module from any one of the first end and the second end of the guide rail to the other end, the first end is a preset spraying starting end, and the second end is a preset spraying return end; determining whether the current moving number is greater than a preset cleaning threshold, if yes, the output content is the output result of the cleaning condition being reached, and if no, returning to perform the operation steps of monitoring the moving position of the nozzle moving module and updating the current moving number to a value obtained by adding 1 to the current moving number if the nozzle moving module completes a complete movement.

9. The method of claim 8, wherein, The monitoring of the moving position of the nozzle moving module comprises: The moment when the moving speed of the nozzle moving module changes from zero to nonzero is determined as an initial moment, and based on the initial moment, a time variable, and the acceleration of the nozzle moving module at each monitoring moment, the moving distance of the nozzle moving module at each monitoring moment is determined, the monitoring moment being a moment obtained by sequentially superimposing the time variable on the initial moment, and the moving distance being the distance between the current position at the corresponding monitoring moment and the departure end, the departure end being any one of the first end and the second end; For the moving distance at each monitoring moment: the moving distance at the monitoring moment is determined as the current moving distance, and it is judged whether the current moving distance is not less than the distance between the first end and the second end, if yes, the output result of the nozzle moving module completing one complete movement is output, if not, the current moving distance is updated to the moving distance at one monitoring moment after the monitoring moment, and the operation step of judging whether the current moving distance is not less than the distance between the first end and the second end is triggered.

10. The method of claim 8, wherein, The monitoring of the moving position of the nozzle moving module comprises: In the case of receiving a first trigger signal, it is judged whether a second trigger signal is received, if yes, the output result of the nozzle moving module completing one complete movement is output, wherein the first trigger signal is a trigger signal generated when the sensor deployed at the departure end detects that the nozzle moving module leaves, the second trigger signal is a trigger signal generated when the sensor deployed at the destination end detects that the nozzle moving module enters, the departure end is any one of the first end and the second end, and the destination end is the other end of the first end and the second end except the departure end.

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