Maintenance device and printer

Abstract

The present application relates to the field of printing technology, and in particular to a maintenance device and a printer. The maintenance device includes a lifting drive assembly, an ink scraping assembly, and an air shower assembly; the lifting drive assembly is used to drive the ink scraping assembly to lift and lower; the ink scraping assembly includes a mounting plate, an ink scraping blade, and an elastic sheet, the mounting plate is arranged on a movable frame, and a through leakage hole is arranged at the bottom of the mounting plate, one end of the elastic sheet is connected to the mounting plate, and the other end of the elastic sheet is connected to the ink scraping blade, and the ink scraping blade is used to scrape the liquid from the print head; the air shower assembly includes a cover plate and an air nozzle, the cover plate is used to cover the mounting plate, and when the cover plate is covered on the mounting plate, the air nozzle faces the ink scraping blade, and the air nozzle is used to blow air to the ink scraping blade. Through the above method, the service life of the ink scraping blade and the print head can be extended, the problem of ink dispersion of the print head can be improved, and the problem of ink contamination of the printing environment can be improved.

Description

Technical Field

[0001] The present application relates to the field of printing technology, and in particular to a maintenance device and a printer. Background Art

[0002] The print head is a precise and important component in an inkjet printer. After the print head has been working for a long time, ink will remain on the surface of the print head, affecting the printing effect of the print head and even causing the print head to be clogged and damaged.

[0003] Existing technology typically uses a scraper to scrape any remaining ink from the outside of the printhead after the ink is applied. During this scraping process, the scraper needs to penetrate the printhead from the side to a depth of approximately 1 mm. This causes the scraper to pass through the sharp edge of the printhead's starting point, causing physical damage after a few days of use, making it unusable and ultimately useless. Summary of the Invention

[0004] The embodiments of the present application aim to provide a maintenance device and a printer, so as to at least extend the service life of the scraper.

[0005] In order to solve the above technical problems, the embodiments of the present application adopt the following technical solutions:

[0006] In the first aspect, an embodiment of the present application provides a maintenance device, which includes a lifting drive assembly, an ink scraping assembly and an air shower assembly; the lifting drive assembly includes a fixed frame, a movable frame and a first drive member, the movable frame is slidably arranged on the fixed frame, and the first drive member is used to drive the movable frame to move up and down relative to the fixed frame; the ink scraping assembly includes a mounting plate, an ink scraping blade and an elastic sheet, the mounting plate is arranged on the movable frame, and a through leakage hole is provided at the bottom of the mounting plate, one end of the elastic sheet is connected to the mounting plate, and the other end of the elastic sheet is connected to the ink scraping blade, The scraper is used to scrape liquid from the print head; the air shower assembly includes a cover plate and an air nozzle, the cover plate is rotatably arranged on the fixed frame, and the air nozzle is arranged on one side of the cover plate; wherein, the cover plate is used to rotate relative to the fixed frame to a first storage position to avoid the mounting disk when the first driving member drives the movable frame to rise; the cover plate is also used to rotate relative to the fixed frame to cover the mounting disk when the first driving member drives the movable frame to descend to the second storage position; when the cover plate is covered on the mounting disk, the air nozzle faces the scraper, and the air nozzle is used to blow air to the scraper.

[0007] In some embodiments, the scraper assembly further includes a first mounting block and a second mounting block, the first mounting block is arranged on the mounting disk, the two ends of the elastic sheet are respectively connected to the first mounting block and the second mounting block, and the scraper is arranged on the second mounting block; along a direction parallel to the mounting disk, the first mounting block is spaced from the second mounting block; along a direction perpendicular to the mounting disk, the second mounting block is spaced from the mounting disk.

[0008] In some embodiments, at least one of the second mounting blocks includes a mounting base, a mounting platform and a baffle, the mounting base is connected to the elastic sheet, the mounting platform and the baffle are both arranged on the side of the mounting base away from the mounting disk; the scraper is arranged on the mounting platform, the baffle surrounds the mounting platform, and the baffle is provided with a notch on the side of the mounting platform away from the edge of the mounting disk.

[0009] In some embodiments, when viewed in a direction perpendicular to the mounting plate, the projection of the ink scraper coincides with the projection of the leakage hole.

[0010] In some embodiments, the air shower assembly further includes a rotating shaft, which is rotatably disposed on the fixed frame, and the cover plate is disposed on the rotating shaft; the maintenance device further includes a rotation drive assembly, which includes a drive arm and a telescopic drive, one end of the drive arm is connected to the rotating shaft, one end of the telescopic drive is rotatably connected to the fixed frame, and the other end of the telescopic drive is rotatably connected to the other end of the drive arm to drive the cover plate to rotate relative to the fixed frame.

[0011] In some embodiments, the maintenance device also includes a first liquid collecting trough, which is arranged on the movable frame, and the first liquid collecting trough is located directly below the mounting plate, and the first liquid collecting trough is used to collect liquid leaked from the leakage hole; there is a gap between the first liquid collecting trough and the mounting plate, and the gap is used to discharge the gas blown out by the nozzle.

[0012] In some embodiments, the maintenance device also includes a second liquid collection trough, which is arranged on the fixed frame; when the cover plate is in the first storage position, the cover plate is at least partially located directly above the second liquid collection trough, so that the second liquid collection trough collects liquid dripping from the cover plate.

[0013] In some embodiments, a guide groove is provided on one side of the cover plate where the air nozzle is provided; when the cover plate is in the first storage position, the guide groove is used to guide the liquid attached to the cover plate to the middle part of the cover plate along a direction parallel to the rotation axis of the cover plate.

[0014] In some embodiments, the ink scraping assembly further includes a receiving plate, one end of which is connected to the top surface of the mounting plate, and the other end of which is directed toward the fixing frame and extends upward.

[0015] In some embodiments, the air shower assembly further includes a positioning post, which is disposed on the cover plate; when the cover plate is disposed on the mounting plate, the positioning post is supported against the mounting plate.

[0016] In some embodiments, the air shower assembly further includes a sealing plate, which is disposed on a side of the cover plate where the air nozzle is disposed, and the sealing plate surrounds the air nozzle; when the cover plate is disposed on the mounting plate, the sealing plate extends into the mounting plate.

[0017] In some embodiments, the air shower assembly further includes a plurality of electrically controlled valves and a plurality of diverters, the diverter includes an air inlet pipe and a plurality of air outlet pipes, the air outlet pipe is connected to the air inlet pipe, one of the air inlet pipes is connected to one of the electrically controlled valves, and one of the air outlet pipes is connected to one of the air nozzles.

[0018] In a second aspect, an embodiment of the present application provides a printer, comprising a maintenance device as described in any one of the above items.

[0019] In the maintenance device and printer of the embodiments of the present application, an elastic sheet connects the ink scraper to the mounting plate, alleviating the problem of severe wear and tear caused by hard contact between the ink scraper and the print head, and reducing damage to the ink scraper from the sharp edge of the print head starting point, thereby extending the service life of the ink scraper and the print head. Blowing air through a nozzle to the ink scraper to clean the ink from the ink scraper can reduce the amount of ink remaining on the ink scraper, improve the problem of ink on the ink scraper re-adhering to the print head and the occurrence of stringing between the ink scraper and the print head, and thus improve the problem of ink dispersion in the print head. Furthermore, when the nozzle blows air, a cover plate is placed on the mounting plate, which can reduce the amount of ink flying off the mounting plate and improve the problem of ink contaminating the printing environment.

[0020] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] One or more embodiments are exemplarily illustrated by corresponding drawings, which do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings are represented as similar elements, and unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0022] Figure 1is a schematic structural diagram of a maintenance device according to an embodiment of the present application;

[0023] Figure 2 This is a schematic structural diagram of the maintenance device according to another embodiment of the present application;

[0024] Figure 3 yes Figure 1 A partial enlarged view of the middle scraper assembly;

[0025] Figure 4 yes Figure 1 A schematic diagram of the structure of part of the maintenance device;

[0026] Figure 5 yes Figure 1 A schematic diagram of the structure of part of the maintenance device;

[0027] Figure 6 yes Figure 1 Schematic diagram of the structure of the stroke mouth.

[0028] The accompanying drawings in the specific implementation manner are as follows:

[0029] 100. Maintenance device;

[0030] 1. Lifting drive assembly; 11. Fixed frame; 111. Slide rail; 12. Moving frame; 121. Slider; 13. First drive member;

[0031] 2. Ink scraper assembly; 21. Mounting plate; 211. Liquid leakage hole; 22. Ink scraper blade; 221. Arc-shaped tip; 23. Elastic piece; 24. First mounting block; 25. Second mounting block; 251. Mounting base; 2511. Through hole; 252. Mounting platform; 253. Baffle; 2531. Notch; 2532. First wall; 2533. Second wall; 26. Adapter plate;

[0032] 3. Air shower assembly; 31. Cover plate; 311. Guide groove; 32. Air nozzle; 321. Air outlet; 33. Rotating shaft; 34. Positioning column; 35. Sealing plate; 36. Electric control valve; 37. Diverter; 371. Air inlet pipe; 372. Air outlet pipe;

[0033] 4. The first liquid collecting tank;

[0034] 5. Rotation drive assembly; 51. Drive arm; 52. Telescopic drive;

[0035] 6. The second liquid collecting tank. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solutions and advantages of the present application clearer, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not intended to limit the present application. It should be noted that when an element is described as "fixed on" another element, it can be directly on the other element, or there can be one or more centered elements therebetween. When an element is described as "connected to" another element, it can be directly connected to the other element, or there can be one or more centered elements therebetween. It should be noted that, if there is no conflict, the various features in the embodiments of the present application can be combined with each other, all within the scope of protection of the present application. In addition, although the functional modules are divided in the device schematic and the logical order is shown in the flow chart, in some cases, the steps shown or described can be performed in a different module division than in the device schematic or in the order in the flow chart.

[0037] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned figure descriptions are intended to cover non-exclusive inclusions.

[0038] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0039] In the description of the embodiments of this application, the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, these terms have no special meaning and therefore should not be construed as limiting the scope of protection of this application. In the description of the embodiments of this application, the meaning of "plurality" is two or more, unless otherwise specifically defined.

[0040] Unless otherwise defined, all technical and scientific terms used in this specification have the same meanings as those commonly understood by those skilled in the art to which this application belongs. The terms used in this specification are intended only to describe specific embodiments and are not intended to limit this application. The term "and / or" as used in this specification includes any and all combinations of one or more of the relevant listed items.

[0041] In addition, the technical features involved in different embodiments of the present application described below can be combined with each other as long as they do not conflict with each other.

[0042] First, see Figure 1 and Figure 2 The present invention provides a maintenance device 100, comprising a lift drive assembly 1, an ink scraper assembly 2, and an air shower assembly 3. The lift drive assembly 1 is used to drive the ink scraper assembly 2 to move upward and downward, and the ink scraper assembly 2 is used to scrape liquid from the print head. The air shower assembly 3 is mounted on a mounting plate 21 and blows air toward the ink scraper blade 22. In the prior art, print heads are typically positioned downward, i.e., the print head prints on the print medium below. The present invention describes an example in which the ink scraper assembly 2 is positioned below the print head and moves relative to the print head to move closer to or further away from the print head. It is understood that in other embodiments of the present invention, the ink scraper assembly 2 can also move closer to or further away from the print head in other directions. In the present embodiment, the ink scraper assembly 2 is used to scrape liquid from the print head, and the liquid is primarily ink. Therefore, the present invention describes the liquid as ink. It is understood that in other embodiments of the present invention, the liquid can also be other liquids, such as a mixture of ink and water, a mixture of ink and dust, or a mixture of ink and lubricating oil.

[0043] For the above lift assemblies, see Figure 1 and Figure 2 The lift drive assembly 1 is used to drive the scraper assembly 2 to move up and down. The lift drive assembly 1 includes a fixed frame 11, a movable frame 12, and a first drive member 13. Both the fixed frame 11 and the movable frame 12 can be flat. The movable frame 12 is slidably mounted on the fixed frame 11. The first drive member 13 is used to drive the movable frame 12 to move up and down relative to the fixed frame 11. The scraper assembly 2 is mounted on the movable frame 12, so that the lift assembly drives the scraper assembly 2 to move toward or away from the printhead.

[0044] Among them, the fixing frame 11 is provided with a slide rail 111, and the moving frame 12 is provided with a slider 121. The slide rail 111 extends in the up and down direction, and the slider 121 is slidably connected to the slide rail 111, so that the moving frame 12 is arranged on the fixing frame 11 in a slidable manner in the up and down direction. The first driving member 13 can be an electric cylinder. The first driving member 13 is arranged on the fixing frame 11, and the output shaft of the first driving member 13 is connected to the moving frame 12. The output shaft of the first driving member 13 is parallel to the slide rail 111, so that the first driving member 13 can drive the moving frame 12 to move up and down relative to the fixing frame 11. In some other embodiments, the first driving member 13 can also be a servo motor, and the moving frame 12 is driven to move up and down relative to the fixing frame 11 through the cooperation of a gear and a rack, or the moving frame 12 is driven to move up and down relative to the fixing frame 11 through the cooperation of a threaded rod and a nut.

[0045] For the above-mentioned ink scraping assembly 2, please refer to Figure 1 and Figure 2 , the ink scraping assembly 2 includes a mounting plate 21 and an ink scraping blade 22. The mounting plate 21 can be in the shape of a rectangular plate and can be arranged horizontally, and the ink scraping blade 22 can be in the shape of a rectangular sheet. The mounting plate 21 is arranged on the moving frame 12, and the ink scraping blade 22 is arranged on the mounting plate 21. The ink scraping blade 22 is used to scrape the ink on the bottom surface of the printing head. The mounting plate 21 and the ink scraping blade 22 can move up and down synchronously with the moving frame 12, so that the ink scraping blade 22 approaches and contacts the printing head. After the ink scraping blade 22 contacts the printing head, the printing head moves horizontally relative to the ink scraping blade 22, so that the ink scraping blade 22 scrapes away the ink of the printing head. The horizontal movement of the printing head relative to the ink scraping blade 22 can be realized by driving the printing head to move horizontally by the printer, or by driving the maintenance device 100 to move horizontally. It can be understood that the contact surface between the ink scraping blade 22 and the printing head is usually in a linear shape. When the ink scraping blade 22 moves horizontally relative to the printing head, the moving direction of the ink scraping blade 22 is perpendicular to the line, so as to maximize the ink scraping area of the ink scraping blade 22.

[0046] Among them, please refer to Figure 1 , the number of the ink scraping blades 22 is multiple, and the position of each ink scraping blade 22 corresponds to the position of a printing head up and down. That is, when observing in the up and down direction, the projection of each ink scraping blade 22 at least partially coincides with the projection of a printing head. Therefore, the ink scraping assembly 2 can scrape the ink of multiple printing heads at the same time, improving the ink scraping efficiency. The number of the ink scraping blades 22 can be one-half, one-third, one-fourth, etc. of the total number of the printing heads on the printer. The ink scraping assembly 2 performs partitioned ink scraping on the printing heads of the printer and scrapes each partition one by one; the number of the ink scraping blades 22 can also be equal to the total number of the printing heads on the printer, and the ink scraping assembly 2 can complete ink scraping on all the printing heads of the printer at the same time. Optionally, the multiple ink scraping blades 22 are arranged in a "pin" shape.

[0047] In some embodiments, please refer to Figure 1 The bottom of the mounting plate 21 is provided with a through-hole 211. After the ink scraper 22 scrapes the ink from the print head, the ink flows down along the scraper 22 to the bottom of the mounting plate 21 and can flow out of the mounting plate 21 through the leaking hole 211, thereby improving the problem of ink accumulation in the mounting plate 21. The number of leaking holes 211 can be multiple, and the size of each leaking hole 211 can be much larger than that of the scraper 22, so that the bottom of the mounting plate 21 has good liquid and gas permeability, making it easier to blow the ink out of the mounting plate 21 through the leaking hole 211 when the air shower assembly 3 blows air.

[0048] In order to receive the ink leaking from the leakage hole 211, in some embodiments, refer to Figure 1 The maintenance device 100 also includes a first liquid collecting tank 4, which is provided on the movable frame 12. The first liquid collecting tank 4 is located directly below the mounting plate 21. The first liquid collecting tank 4 is used to collect ink leaked from the leakage hole 211. The first liquid collecting tank 4 is located directly below the mounting plate 21, which means that when observed in a direction perpendicular to the mounting plate 21, the projection of the first liquid collecting tank 4 coincides with the projection of the mounting plate 21, or the projection of the mounting plate 21 coincides with the projection of the first liquid collecting tank 4. By collecting the ink leaked from the leakage hole 211, the problem of ink contamination of the printing environment can be improved. The printing environment refers to the environment in which the printer and the printing medium are located. A poor printing environment will affect the printing effect and also contaminate the printing medium.

[0049] There is a gap between the first sump 4 and the mounting plate 21, which is used to discharge the gas blown by the nozzle 32. Discharging the gas blown by the nozzle 32 through the gap can accelerate the flow rate of the gas in the mounting plate 21 and the first sump 4, thereby improving the efficiency of blowing ink out of the ink scraping assembly 2.

[0050] It should be noted that when the lifting drive assembly 1 drives the ink scraping assembly 2 to rise and contact the print head, the ink scraping blade 22 makes hard contact with the print head, for example, the ink scraping blade 22 digs into the print head from the side of the print head to a depth of about 1 mm. When the ink scraping blade 22 then scrapes the ink, the ink scraping blade 22 will pass through the sharp edge of the starting point of the print head, causing the ink scraping blade 22 to be physically damaged after a few days of use, such as severe wear and tear, and even grooves and notches. The physically damaged ink scraping blade 22 cannot be used any longer and can only be scrapped, that is, the service life of the ink scraping blade 22 is short, which increases the cost of using the ink scraping blade 22. The ink scraping blade 22 will also scratch the surface of the print head, shortening the service life of the print head. To improve this deficiency, in some embodiments, please refer to Figure 3The ink scraping assembly 2 further includes an elastic sheet 23, which connects the ink scraping blade 22 to the mounting plate 21. For example, one end of the elastic sheet 23 is connected to the mounting plate 21, and the other end of the elastic sheet 23 is connected to the ink scraping blade 22. The elastic sheet 23 can be a metal sheet, such as a steel sheet, a copper sheet, etc., which has good elasticity. The elastic sheet 23 is used to deform when the ink scraping blade 22 contacts the print head. For example, when the ink scraping blade 22 contacts the print head, the reaction force of the print head on the ink scraping blade 22 drives the elastic sheet 23 to bend, so that the pressure between the ink scraping blade 22 and the print head is proportional to the degree of bending of the elastic sheet 23, thereby improving the problem of severe wear of the ink scraping blade 22 due to hard contact with the print head, and extending the service life of the ink scraping blade 22 and the print head. Moreover, when the scraper 22 penetrates the print head from the side to a depth of about 1 mm and scrapes the ink, the scraper 22 will pass through the sharp edge of the starting point of the print head. However, since the elastic sheet 23 connects the scraper 22 to the mounting plate 21, the reaction force of the print head on the scraper 22 drives the elastic sheet 23 to bend, so that the scraper 22 as a whole moves in the direction away from the print head until the scraper 22 contacts the bottom surface of the print head. This can reduce the damage to the scraper 22 caused by the sharp edge of the starting point of the print head and extend the service life of the scraper 22.

[0051] In particular, because the elastic sheet 23 connects the wiper blade 22 to the mounting plate 21, when the wiper blade 22 moves upward to contact the print head, the relative horizontal positions of the wiper blade 22 and the print head can be controlled so that the wiper blade 22 directly contacts the bottom surface of the print head. The print head is then controlled to move horizontally relative to the wiper blade 22 to achieve ink scraping. If the wiper blade 22 moves horizontally outside the print head, that is, when viewed from above and below, the wiper blade 22 is controlled to descend, and the above steps of contacting the print head with the wiper blade 22 are repeated. By making the scraper 22 directly contact the bottom surface of the print head and making the scraper 22 contact the bottom surface of the print head again when the scraper 22 moves horizontally to the outside of the print head, it is possible to directly avoid the situation where the sharp edge of the starting point of the print head contacts the scraper 22, reduce the damage to the scraper 22 caused by the sharp edge of the starting point of the print head, extend the service life of the scraper 22, and improve the problem of the scraper 22 adhering ink to the side of the print head, making the ink difficult to clean.

[0052] The elastic sheet 23 can be directly connected to the mounting plate 21 and the ink scraper 22 by screws or bolts, or can be indirectly connected by some parts. Figure 3The ink scraping assembly 2 further includes a first mounting block 24 and a second mounting block 25. The first mounting block 24 is disposed on the mounting plate 21. The two ends of the elastic sheet 23 are respectively connected to the first mounting block 24 and the second mounting block 25. The ink scraping blade 22 is disposed on the second mounting block 25. The first mounting block 24 is connected to the mounting plate 21 and the elastic sheet 23 by screws or bolts, and the second mounting block 25 is connected to the elastic sheet 23 and the ink scraping blade 22 by screws or bolts.

[0053] Among them, see Figure 3 The first mounting block 24 is spaced apart from the second mounting block 25 in a direction parallel to the mounting plate 21; the second mounting block 25 is spaced apart from the mounting plate 21 in a direction perpendicular to the mounting plate 21. Because the first mounting block 24 and the second mounting block 25 are spaced apart in a direction parallel to the mounting plate 21, the first mounting block 24 does not affect the movement of the second mounting block 25 in a direction perpendicular to the mounting plate 21. The spacing of the second mounting block 25 from the mounting plate 21 allows the second mounting block 25 to move closer to the mounting plate 21 and bend the elastic sheet 23 when the wiper blade 22 contacts the printhead. Alternatively, the elastic sheet 23 is parallel to the mounting plate 21.

[0054] In some embodiments, see Figure 1 and Figure 3 Observed from a direction perpendicular to the mounting plate 21, the projection of the ink scraper 22 overlaps with the projection of the leakage hole 211. Because the first mounting block 24 is spaced apart from the second mounting block 25, the second mounting block 25 extends relative to the first mounting block 24 in a direction parallel to the mounting plate 21. The second mounting block 25 can extend above the leakage hole 211, thereby mounting the ink scraper 22 above the leakage hole 211. When the air shower assembly 3 blows air toward the ink scraper 22, ink on the ink scraper 22 is blown into the leakage hole 211 and leaves the mounting plate 21 from the leakage hole 211, reducing ink adhesion to the inner wall of the mounting plate 21 and improving the efficiency of blowing ink away from the ink scraper assembly 2.

[0055] In some embodiments, see Figure 3 The second mounting block 25 includes a mounting base 251 and a mounting platform 252. The mounting base 251 is connected to the elastic sheet 23. The mounting platform 252 is arranged on the side of the mounting base 251 away from the mounting plate 21. The ink scraping blade 22 is arranged on the mounting platform 252. The ink scraping blade 22 is mounted on the mounting platform 252, and the ink scraping blade 22 can be installed upright, for example, at a right angle or an acute angle between the ink scraping blade 22 and the mounting plate 21. In the embodiment of the present application, please refer to Figure 3 The mounting platform 252 is ridge-shaped, that is, the mounting platform 252 is in the shape of a lying triangular column, and the scraper 22 is installed on one side of the mounting platform 252. Therefore, there is an acute angle between the scraper 22 and the mounting plate 21. When the scraper 22 contacts the print head, there is also an acute angle between the scraper 22 and the print head.

[0056] In some embodiments, see Figure 3 , the angle between the side of the scraping blade 22 facing the scraping direction and the mounting plate 21 is an obtuse angle, that is, the angle between the side of the scraping blade 22 facing the scraping direction and the print head is an acute angle. Among them, when the scraping blade 22 scrapes ink on the print head, the direction in which the scraping blade 22 moves relative to the print head is the scraping direction. The scraping direction is usually unique, that is, the scraping blade 22 only moves in one direction when scraping ink on the print head, so as to improve the problem of unclean scraping caused by the scraping blade 22 scraping ink back and forth. By making the angle between the side of the scraping blade 22 facing the scraping direction and the print head an acute angle, the friction between the print head and the scraping blade 22 can be reduced, the damage to the print head and the scraping blade 22 can be reduced, and the service life of the print head and the scraping blade 22 can be extended.

[0057] In some embodiments, see Figure 3 The end of the scraper blade 22 facing away from the mounting plate 21 is provided with a curved tip 221. The angle between the curved tip 221 and the rest of the scraper blade 22 is obtuse. The angle between the curved tip 221 and the mounting plate 21, which faces the scraping direction, is acute. That is, the angle between the curved tip 221 and the print head, which faces the scraping direction, is obtuse. When the curved tip 221 scrapes ink from the print head, it acts like a scoop, causing the ink to gradually slide away from the print head along the curved tip 221, making it easier for the ink to separate from the print head.

[0058] In some embodiments, see Figure 3 The second mounting block 25 is provided with a through hole 2511, which can be specifically provided on the mounting base 251 and is located between the ink scraping blade 22 and the mounting plate 21. When the air shower assembly 3 blows air toward the ink scraping blade 22, the ink on the ink scraping blade 22 will flow to the top of the second mounting block 25 and then flow through the through hole 2511 to the leakage hole 211 below the second mounting block 25, thereby reducing the accumulation of ink above the second mounting block 25 and improving the efficiency of blowing the ink away from the ink scraping assembly 2. For further information, please refer to Figure 3 When viewed in a direction perpendicular to the mounting plate 21 , the projection of the through hole 2511 coincides with the projection of the leakage hole 211 , so the ink can directly enter the leakage hole 211 after passing through the through hole 2511 , thereby improving the efficiency of blowing the ink away from the ink scraping assembly 2 .

[0059] Among them, see Figure 3 At least one ink scraper 22 is too close to the edge of the mounting plate 21 to allow for a liquid leakage hole 211 to be formed below it. This causes ink to easily accumulate below the ink scraper 22 on the mounting plate 21, and the ink is too far from the liquid leakage hole 211 to flow out. To improve this problem, in some embodiments, see Figure 3At least one second mounting block 25 includes a baffle 253, which is disposed on the side of the mounting base 251 facing away from the mounting plate 21. The baffle 253 surrounds the mounting platform 252 and has a notch 2531 disposed on the side of the mounting platform 252 facing away from the edge of the mounting plate 21. The scraper blade 22 is disposed on the mounting platform 252, with the baffle 253 surrounding the end of the scraper blade 22 adjacent to the mounting base 251. When the air shower assembly 3 blows air toward the scraper blade 22, ink is blown toward the end of the scraper blade 22 adjacent to the mounting base 251 and the mounting platform 252. The baffle 253 surrounds the mounting platform 252 and is provided with a notch 2531 on the side of the mounting platform 252 facing away from the edge of the mounting plate 21. This allows the ink to be directed toward the adjacent leakage hole 211, thereby reducing ink splashing onto the edge of the mounting plate 21 or flying out of the mounting plate 21 from above. This alleviates the problem of ink adhering to the edge of the mounting plate 21, making it difficult to clean, and ink flying outside the mounting plate 21, thereby contaminating the printing environment. It will be appreciated that the notch 2531 faces the adjacent scraper blade 22, thereby directing the ink toward the leakage hole 211 corresponding to the adjacent scraper blade 22, thereby alleviating the problem of ink being too far away from the leakage hole 211 and having difficulty flowing out of the leakage hole 211.

[0060] For the above baffle 253, see Figure 3 The baffle 253 includes a first wall 2532 and a second wall 2533. The first wall 2532 is located on the side of the mounting platform 252 away from the notch 2531. There are two second walls 2533, each connected to the ends of the first wall 2532. Both second walls 2533 are perpendicular to the first wall 2532, thereby forming a semi-enclosed baffle 253. The first wall 2532 can be integrally formed with the mounting base 251, and the second wall 2533 can be detachably connected to the mounting base 251. For example, the second wall 2533 can be a metal plate, such as an iron sheet or a copper sheet.

[0061] For the above air shower assembly 3, please refer to Figure 1The air shower assembly 3 includes a cover plate 31 and an air nozzle 32. The cover plate 31 is rotatably mounted on the fixed frame 11, and the air nozzle 32 is mounted on one side of the cover plate 31. The cover plate 31 is used to rotate relative to the fixed frame 11 to a first storage position so as to avoid the mounting plate 21 when the first driving member 13 drives the movable frame 12 to rise. The cover plate 31 is also used to rotate relative to the fixed frame 11 to cover the mounting plate 21 when the first driving member 13 drives the movable frame 12 to descend to the second storage position. When the cover plate 31 covers the mounting plate 21, the air nozzle 32 faces the ink scraping blade 22, and the air nozzle 32 is used to blow air toward the ink scraping blade 22. It should be noted that the "first storage position" and "second storage position" in the embodiment of the present application are both pre-set positions. When the cover plate 31 is in the first storage position, the cover plate 31 does not affect the lifting and lowering movement of the scraper assembly 2. For example, in the embodiment of the present application, the cover plate 31 is in a vertical state when it is in the first storage position and is located on one side of the mounting plate 21 in a direction parallel to the mounting plate 21. Therefore, in the horizontal direction, the scraper assembly 2 is spaced apart from the cover plate 31, thereby not affecting the lifting and lowering movement of the scraper assembly 2. It can be understood that in other embodiments of the present application, the first storage position can also be adaptively adjusted on this basis. When the movable frame 12 is in the second storage position, it can be rotated to cover the mounting plate 21. For example, in the embodiment of the present application, the mounting plate 21 is slightly lower than the cover plate 31, so that the cover plate 31 can be rotated to above the mounting plate 21 and cover the mounting plate 21, and then the air nozzle 32 can be directed toward the scraper blade 22 to blow air to the scraper blade 22 to clean the ink on the scraper blade 22. By blowing air toward the ink scraper 22 through the air nozzle 32 to clean the ink on the ink scraper 22, the amount of ink residue on the ink scraper 22 can be reduced, the problem of ink on the ink scraper 22 adhering to the print head again and the problem of wire drawing between the ink scraper 22 and the print head can be improved, and the problem of ink dispersion from the print head can be improved: and when the air nozzle 32 blows air, the cover plate 31 is covered on the mounting plate 21, which can reduce the ink flying out of the mounting plate 21 and improve the problem of ink contaminating the printing environment.

[0062] In some other embodiments, the cover plate 31 can be directly placed on the mounting plate 21 manually, that is, the cover plate 31 is not connected to the fixing frame 11, and the cover plate 31 is placed on or removed from the mounting plate 21 manually.

[0063] In order to rotatably mount the cover plate 31 on the fixing frame 11 and drive the cover plate 31 to rotate, in some embodiments, refer to Figure 4The air shower assembly 3 further includes a rotating shaft 33, which is rotatably mounted on the fixed frame 11, and the cover plate 31 is mounted on the rotating shaft 33. The maintenance device 100 further includes a rotation drive assembly 5, which includes a drive arm 51 and a telescopic drive 52. One end of the drive arm 51 is connected to the rotating shaft 33, one end of the telescopic drive 52 is rotatably mounted on the fixed frame 11, and the other end of the telescopic drive 52 is rotatably mounted on the other end of the drive arm 51, thereby driving the cover plate 31 to rotate relative to the fixed frame 11. The second drive member may be an electric cylinder, which is rotatably mounted on the fixed frame 11, and the output shaft of the second drive member is rotatably mounted on one end of the drive arm 51, so that the first drive member 13 can drive the drive arm 51 to rotate about the rotating shaft 33, and simultaneously drive the rotating shaft 33 to rotate, thereby driving the cover plate 31 to rotate relative to the fixed frame 11.

[0064] When the cover plate 31 is in the first storage position, the ink attached to the cover plate 31 will drip downward to the ground, polluting the printing environment. To improve this shortcoming, in some embodiments, the maintenance device 100 also includes a second liquid collection tank 6, which is arranged on the fixing frame 11; when the cover plate 31 is in the first storage position, the cover plate 31 is at least partially located directly above the second liquid collection tank 6, so that the second liquid collection tank 6 collects the ink dripping from the cover plate 31. The cover plate 31 is at least partially located directly above the second liquid collection tank 6, which means that when viewed in a direction perpendicular to the mounting plate 21, the projection of the cover plate 31 at least partially overlaps with the second liquid collection tank 6. The second liquid collection tank 6 can collect at least part of the ink dripping from the cover plate 31 to improve the problem of ink polluting the printing environment.

[0065] Please note that Figure 1 and Figure 4 The length of the maintenance device 100 along the direction parallel to the rotating shaft 33 is mainly determined by the length of the cover plate 31 and the mounting plate 21. To reduce the length of the maintenance device 100 along this direction, the length of the rotating shaft 33 is usually less than or equal to the length of the cover plate 31. However, both ends of the rotating shaft 33 need to be rotatably connected to the fixing frame 11. Therefore, ink on the cover plate 31 may drip onto the connection between the rotating shaft 33 and the fixing frame 11, affecting the lubrication between the rotating shaft 33 and the fixing frame 11. To improve this deficiency, in some embodiments, see Figure 1 and Figure 4 A guide groove 311 is provided on one side of the cover plate 31 where the nozzle 32 is provided; when the cover plate 31 is in the first storage position, the guide groove 311 is used to guide the ink attached to the cover plate 31 to the middle part of the cover plate 31 along the direction parallel to the rotation axis of the cover plate 31. Figure 1 and Figure 3When the cover plate 31 is in the first storage position, the guide groove 311 gradually moves from the end of the cover plate 31 toward the center of the cover plate 31, parallel to the rotation axis of the cover plate 31. Therefore, when ink enters the guide groove 311, it gradually flows toward the center of the cover plate 31, making it less likely for ink to drip onto the connection between the rotating shaft 33 and the fixing frame 11. Furthermore, by directing the ink to the center of the cover plate 31, the length of the second sump 6 parallel to the rotation axis 33 is shortened.

[0066] When the cover plate 31 rotates relative to the fixing frame 11, the cover plate 31 will rotate to the top of the gap between the mounting plate 21 and the fixing frame 11, that is, the ink on the cover plate 31 will drip from the gap between the mounting plate 21 and the fixing frame 11 to the ground. Figure 1 and Figure 4 The ink scraper assembly 2 also includes a receiving plate 26, one end of which is connected to the top surface of the mounting plate 21, and the other end of which extends upward toward the mounting frame 11. When ink from the cover plate 31 drips from above the gap between the mounting plate 21 and the mounting frame 11, the ink drips onto the receiving plate 26. Furthermore, as the receiving plate 26 extends toward the mounting frame 11, it also extends upward, thus tilting toward the mounting plate 21. Ink from the receiving plate 26 flows into the mounting plate 21, thereby improving the problem of ink contamination of the printing environment.

[0067] In some embodiments, see Figure 1 and Figure 4 The air shower assembly 3 further includes a positioning post 34, which is disposed on the cover plate 31. When the cover plate 31 is placed on the mounting plate 21, the positioning post 34 abuts against the mounting plate 21. There are multiple positioning posts 34, each supported on the mounting plate 21. These positioning posts 34 can position the cover plate 31 relative to the mounting plate 21, thereby positioning the distance between the air nozzle 32 and the ink scraping blade 22, for example, at 1 mm. This ensures that the air nozzle 32 effectively cleans the ink scraping blade 22, while also reducing the risk of the air nozzle 32 being contaminated by ink from the scraping blade 22 due to contact with the ink scraping blade 22.

[0068] In some embodiments, see Figure 1 and Figure 4 The air shower assembly 3 further includes a sealing plate 35, which is disposed on one side of the cover plate 31 where the air nozzle 32 is disposed. The sealing plate 35 surrounds the air nozzle 32. When the cover plate 31 is placed on the mounting plate 21, the sealing plate 35 extends into the mounting plate 21. The sealing plate 35 extends into the mounting plate 21, i.e., intersecting the edge of the mounting plate 21 in a direction perpendicular to the mounting plate 21. This helps to reduce ink splashing from above the mounting plate 21 to the outside of the mounting plate 21, thereby improving the problem of ink contamination of the printing environment.

[0069] In some embodiments, see Figure 5 The air shower assembly 3 also includes multiple electrically controlled valves 36 and multiple flow diverters 37. The flow diverter 37 includes an air inlet pipe 371 and multiple air outlet pipes 372. The air outlet pipes 372 are connected to the air inlet pipe 371, each air inlet pipe 371 is connected to an electrically controlled valve 36, and each air outlet pipe 372 is connected to an air nozzle 32. The electrically controlled valves 36 enable zoned control of the multiple air nozzles 32. For example, if each flow diverter 37 includes four air outlet pipes 372, each electrically controlled valve 36 can control four air nozzles 32. The corresponding air nozzles 32 can be opened appropriately based on the ink contamination of the ink scraping blade 22 on the mounting plate 21 to reduce air waste. This also allows for more concentrated air supply, increasing the flow rate of the air blown out of the air nozzles 32, faster removal of ink from the ink scraping blade 22, and improved efficiency in blowing ink away from the ink scraping assembly 2. Optionally, the electrically controlled valve 36 is a solenoid valve. Optionally, the flow diverter 37 is a five-way pipe.

[0070] For the above-mentioned nozzle 32, see Figure 6 The air nozzle 32 is provided with an air outlet 321. When the cover plate 31 is placed on the mounting plate 21, the air outlet 321 faces the ink scraping blade 22, so that the air nozzle 32 blows air toward the ink scraping blade 22. The air outlet 321 is in an elongated strip shape. Along a length direction parallel to the air outlet 321, the length of the air outlet 321 matches the width of the ink scraping blade 22. For example, along a length direction parallel to the air outlet 321, the length of the air outlet 321 is equal to the width of the ink scraping blade 22, or the length of the air outlet 321 is 1 to 2 mm greater than the width of the ink scraping blade 22. This allows the air blown out of the air outlet 321 to be concentrated on the ink scraping blade 22, allowing the ink on the ink scraping blade 22 to be blown away more quickly, thereby improving the efficiency of blowing the ink away from the ink scraping assembly 2.

[0071] In a second aspect, embodiments of the present application provide a printer (not shown) including a maintenance device 100. The printer has the structural features and beneficial effects of the maintenance device 100, which are not described in detail here. The printer can be a flatbed printer, such as a UV (Ultraviolet LED Inkjet Printer) printer.

[0072] The maintenance device 100 and printer of the embodiment of the present application, by blowing air toward the ink scraper 22 through the air nozzle 32 to clean the ink from the ink scraper 22, can reduce the amount of ink residue on the ink scraper 22, improve the problem of ink on the ink scraper 22 adhering to the print head again and the problem of stringing between the ink scraper 22 and the print head, thereby improving the problem of ink dispersion from the print head. Moreover, when the air nozzle 32 blows air, the cover plate 31 is covered on the mounting plate 21, and the sealing plate 35 is staggered with the edge of the mounting plate 21, which can reduce the problem of ink flying out of the mounting plate 21 and improve the problem of ink contaminating the printing environment. The baffle 253 can reduce the ink from splashing onto the edge of the mounting plate 21 or flying out of the mounting plate 21, and can also guide the ink toward the leakage hole 211 corresponding to another adjacent ink scraper 22, thereby improving the problem of ink contaminating the printing environment and the difficulty of ink flowing out of the leakage hole 211. The bottom of the mounting plate 21 is provided with a through leakage hole 211. When viewed in a direction perpendicular to the mounting plate 21, the projection of the ink scraper 22 overlaps with the projection of the leakage hole 211, and the projection of the through hole 2511 overlaps with the projection of the leakage hole 211, thereby improving the efficiency of blowing ink away from the ink scraper assembly 2. The multiple air nozzles 32 are respectively controlled by multiple electrically controlled valves 36. The air nozzles 32 can be opened reasonably to reduce air waste, and the flow rate of the air blown out by the air nozzles 32 can be increased, thereby improving the efficiency of blowing ink away from the ink scraper assembly 2. The elastic sheet 23 connects the ink scraper 22 to the mounting plate 21, improving the problem of severe wear caused by hard contact between the ink scraper 22 and the print head, and reducing damage to the ink scraper 22 caused by the sharp edge of the print head starting point, thereby extending the service life of the ink scraper 22 and the print head.

[0073] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Based on the concept of the present application, the technical features in the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other changes in different aspects of the present application as described above. For the sake of simplicity, they are not provided in detail. Although the present application has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A maintenance device, characterized in that: include: a lifting drive assembly, the lifting drive assembly comprising a fixed frame, a movable frame, and a first drive member, the movable frame being slidably disposed on the fixed frame, the first drive member being used to drive the movable frame to move up and down relative to the fixed frame; An ink scraping assembly includes a mounting plate, an ink scraping blade, and an elastic sheet. The mounting plate is mounted on the movable frame. A through-hole for liquid leakage is provided at the bottom of the mounting plate. One end of the elastic sheet is connected to the mounting plate, and the other end of the elastic sheet is connected to the ink scraping blade. The ink scraping blade is used to scrape liquid from the print head. An air shower assembly, comprising a cover plate and an air nozzle, wherein the cover plate is rotatably arranged on the fixing frame, and the air nozzle is arranged on one side of the cover plate; The cover plate is used to rotate relative to the fixed frame to a first storage position so as to avoid the mounting plate when the first driving member drives the movable frame to rise; the cover plate is also used to rotate relative to the fixed frame to cover the mounting plate when the first driving member drives the movable frame to descend to the second storage position; when the cover plate is covered on the mounting plate, the air nozzle faces the scraper blade, and the air nozzle is used to blow air toward the scraper blade.

2. The maintenance device according to claim 1, characterized in that The ink scraping assembly further includes a first mounting block and a second mounting block, wherein the first mounting block is arranged on the mounting plate, two ends of the elastic sheet are respectively connected to the first mounting block and the second mounting block, and the ink scraping sheet is arranged on the second mounting block; The first mounting block is spaced apart from the second mounting block in a direction parallel to the mounting plate; The second mounting block is spaced apart from the mounting plate in a direction perpendicular to the mounting plate.

3. The maintenance device according to claim 2, characterized in that: At least one second mounting block includes a mounting base, a mounting platform and a baffle, wherein the mounting base is connected to the elastic sheet, and the mounting platform and the baffle are both arranged on a side of the mounting base away from the mounting plate; The ink scraper is arranged on the mounting platform, the baffle surrounds the mounting platform, and the baffle is provided with a notch on a side of the mounting platform away from the edge of the mounting plate.

4. The maintenance device according to claim 1, characterized in that When viewed in a direction perpendicular to the mounting plate, the projection of the ink scraper coincides with the projection of the liquid leakage hole.

5. The maintenance device according to claim 1, characterized in that The air shower assembly further includes a rotating shaft, which is rotatably disposed on the fixing frame, and the cover plate is disposed on the rotating shaft; The maintenance device also includes a rotation drive assembly, which includes a drive arm and a telescopic drive, one end of the drive arm is connected to the rotating shaft, one end of the telescopic drive is rotatably connected to the fixed frame, and the other end of the telescopic drive is rotatably connected to the other end of the drive arm to drive the cover to rotate relative to the fixed frame.

6. The maintenance device according to claim 1, characterized in that The maintenance device further includes a first liquid collecting trough, which is provided on the movable frame and is located directly below the mounting plate, and is used to collect liquid leaking from the leakage hole; A gap is provided between the first liquid collecting tank and the mounting plate, and the gap is used to discharge the gas blown out by the air nozzle.

7. The maintenance device according to claim 1, characterized in that: The maintenance device further includes a second liquid collecting tank, which is arranged on the fixing frame; When the cover plate is in the first storage position, the cover plate is at least partially located directly above the second liquid collecting trough, so that the second liquid collecting trough collects liquid dripping from the cover plate.

8. The maintenance device according to claim 7, characterized in that: A guide groove is provided on one side of the cover plate where the air nozzle is provided; When the cover plate is in the first storage position, the guide groove is used to guide the liquid attached to the cover plate to the middle part of the cover plate along a direction parallel to the rotation axis of the cover plate.

9. The maintenance device according to claim 1, characterized in that: The ink scraping assembly further includes a receiving plate, one end of which is connected to the top surface of the mounting plate, and the other end of which is directed toward the fixing frame and extends upward.

10. The maintenance device according to claim 1, characterized in that: The air shower assembly further includes a positioning column, which is arranged on the cover plate; When the cover plate is disposed on the mounting plate, the positioning post abuts against the mounting plate.

11. The maintenance device according to claim 1, characterized in that: The air shower assembly further includes a sealing plate, which is arranged on one side of the cover plate where the air nozzle is arranged, and the sealing plate surrounds the air nozzle; When the cover plate is arranged on the mounting plate, the sealing plate extends into the mounting plate.

12. The maintenance device according to claim 1, characterized in that The air shower assembly also includes multiple electric control valves and multiple diverters. The diverter includes an air inlet pipe and multiple air outlet pipes. The air outlet pipe is connected to the air inlet pipe. One of the air inlet pipes is connected to one of the electric control valves, and one of the air outlet pipes is connected to one of the air nozzles.

13. A printer, characterized in that: Comprising the maintenance device according to any one of claims 1 to 12.

Images