A super high-speed digital printing machine

Abstract

The application relates to the technical field of digital printing machines, and discloses an ultrahigh-speed digital printing machine which comprises a rack, an unwinding mechanism, a first constant-tension roller mechanism used for transmitting medium and keeping the medium in a constant-tension state, a printing device used for printing the medium, a printing platform mechanism used for transmitting the medium and cooperating with the printing device to complete printing of the medium, a drying mechanism used for drying ink on the medium after printing is completed, and a winding mechanism used for storing the medium. Compared with the prior art, the ultrahigh-speed digital printing machine adopts a structure without a guide belt, utilizes the medium itself for transmission, can effectively improve printing precision, and effectively improves printing efficiency by utilizing high-speed transmission of the medium itself. In addition, the unwinding mechanism, the winding mechanism, the printing device and the drying mechanism are integrally designed, which can not only ensure consistent tension of the medium during printing and precision of the medium during transmission, but also make the printing machine smaller in size, save space and improve the overall precision of the printing machine.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of digital printing machines, in particular to a super-speed digital printing machine. BACKGROUND

[0002] Digital printing is a printing method using digital technology. Digital printing technology is a high-tech product integrating machinery, computer and electronic information technology, which gradually formed with the continuous development of computer technology. The production process of digital printing is simply described as follows: various digital means such as scanning, digital photos, images or computer-made and processed digital patterns are input into a computer, and then the computer color separation printing system processes the digital patterns, and the RIP software specially used for the printing system sprays various special dyes (reactive, dispersed, acid and main coating materials) onto various fabrics or other media, and then processes and processes to obtain various high-precision printed products on various textile fabrics.

[0003] The existing digital printing machines mainly have two forms. One is a scanning type digital printing machine, such as patent No. CN202010044147.6, which discloses a scanning type textile digital printing machine. The nozzle is installed on the nozzle support, and the nozzle support moves back and forth on the beam to perform scanning type digital printing. Since the nozzle moves back and forth, it takes time, so the scanning type digital printing machine has low production efficiency. The other is a tape guide type digital printing machine, such as patent No. CN02107229.9, which discloses a tape guide type digital jet printing machine. The nozzle is fixed, but the transmission of the printing medium is carried out by using the tape guide. The tape guide type digital printing machine effectively improves the printing efficiency compared with the scanning type digital printing machine. However, when the tape guide type digital printing machine is printing, the printing medium is transmitted by using the tape guide. The tape guide cannot be completely synchronized with the transmission of the printing medium, and there will be a certain deviation. For example, when the tape guide starts, the tape guide will start first and then drive the printing medium to transport. The tape guide will travel 2mm to 10mm more than the printing medium. When the tape guide stops, the tape guide stops, but the printing medium will continue to transport for 2mm to 10mm. Different printing medium materials and different tape guide transmission speeds will cause different distance deviations. When there is a distance deviation, it will affect the printing accuracy of the digital printing machine. Especially when the tape guide runs at super-speed, the printing accuracy becomes a technical difficulty. SUMMARY

[0004] Based on the above, the purpose of the present application is to provide a super-speed digital printing machine which can effectively improve the printing accuracy and printing efficiency.

[0005] To achieve the above purpose, the technical scheme adopted by the present application is as follows:

[0006] The application provides a super-high-speed digital printing machine, which comprises:

[0007] a rack;

[0008] an unwinding mechanism arranged on the rack and used for outputting a medium;

[0009] a first constant-tension roller mechanism arranged on the rack and used for transmitting the medium and keeping the medium in a constant-tension state;

[0010] a printing device arranged on the rack and used for printing the medium;

[0011] a printing platform mechanism arranged on the rack and located below the printing device, used for transmitting the medium and cooperating with the printing device to complete the printing of the medium, wherein the printing platform mechanism comprises a vacuum adsorption platform, a driving roller and a driven roller, and the driving roller and the driven roller are arranged on two sides of the vacuum adsorption platform along a first direction respectively;

[0012] a drying mechanism arranged on the rack and used for drying ink on the medium after the printing is completed;

[0013] a winding mechanism arranged on the rack and used for accommodating the medium.

[0014] The first constant-tension roller mechanism is arranged between the unwinding mechanism and the printing platform mechanism.

[0015] The first constant-tension roller mechanism comprises at least two first electronic shelves arranged side by side, a brake roller is arranged on the first electronic shelf and slides along the length direction of the first electronic shelf, and a first corner roller is arranged above the middle of the two adjacent first electronic shelves.

[0016] The first constant-tension roller mechanism further comprises a first brush roller, and the first brush roller is arranged between the first constant-tension roller mechanism and the printing platform mechanism.

[0017] The first constant-tension roller mechanism further comprises a corner-enclosing roller, the corner-enclosing roller is arranged between the first brush roller and the driving roller, and the center of the corner-enclosing roller, the center of the driving roller and the center of the driven roller are connected to form an acute angle.

[0018] The first constant-tension roller mechanism further comprises a nozzle vacuum moisturizing device, and the nozzle vacuum moisturizing device is arranged on the rack and can slide to below the printing device along the first direction.

[0019] The nozzle vacuum moisturizing device is provided with a nozzle cleaning device which can slide along a second direction.

[0020] The first constant-tension roller mechanism further comprises an ink path system, and the ink path system is connected to the printing device.

[0021] The drying mechanism is arranged below the printing platform mechanism.

[0022] A second electronic frame is arranged between the printing platform mechanism and the drying mechanism, and a second brush roller is arranged on the second electronic frame in a sliding manner.

[0023] A second constant tension roller mechanism is arranged between the winding mechanism and the drying mechanism.

[0024] The present application has the following advantages:

[0025] The present application provides an ultra-high-speed digital printing machine, which is mainly used for winding media. The working principle is that the unwinding mechanism transports the winding media to the printing platform, the first constant tension roller mechanism keeps the media in a constant tension state, the vacuum adsorption platform on the printing platform adsorbs the media on its surface, the driving roller is used to provide power for high-speed transmission, the printing device above the printing platform prints the media, the drying mechanism dries the ink on the media after printing, and finally the winding mechanism stores the media. Compared with the prior art, the present application adopts a structure without a guide belt, uses the media itself for transmission, can effectively improve the printing accuracy, and effectively improves the printing efficiency by using the high-speed transmission of the media itself. In addition, the unwinding mechanism, the winding mechanism, the printing device and the drying mechanism are designed integrally, which can not only ensure the consistent tension of the media during printing and the accuracy of the media during transmission, but also make the printing machine smaller in size, save space and improve the overall accuracy of the printing machine. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the description of the embodiments of the present application will be briefly introduced. 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 on the basis of the contents of the embodiments of the present application and the drawings.

[0027] Figure 1 A structure schematic view of the ultra-high-speed digital printing machine provided for the first embodiment of the present application is provided.

[0028] Figure 2 A structure schematic view of the printing platform mechanism provided for the first embodiment of the present application is provided.

[0029] Figure 3 A structure schematic view of the nozzle vacuum moisturizing device and the nozzle cleaning device provided for the first embodiment of the present application is provided.

[0030] Figure 4 Another visual structure schematic view of the nozzle vacuum moisturizing device and the nozzle cleaning device provided for the first embodiment of the present application is provided.

[0031] Figure 5 is an enlarged structural schematic view of A of Figure 3

[0032] Figure 6 is an enlarged structural schematic view of B of Figure 4

[0033] Figure 7 is a structural schematic view of an ink path system provided by an embodiment of the present application;

[0034] Figure 8 is a structural schematic view of an ultra-high-speed digital printing machine provided by an embodiment of the present application.

[0035] In the figure:

[0036] C, medium; X, first direction; Y, second direction; Z, third direction;

[0037] 1, frame; 11, unwinding roller; 110, fourth corner roller; 111, fourth brush roller; 113, second constant tension roller mechanism; 12, winding roller; 13, second corner roller; 14, first brush roller; 15, corner wrapping roller; 16, second electronic frame; 17, second brush roller; 18, third corner roller; 19, third brush roller;

[0038] 2, first constant tension roller mechanism; 21, first electronic frame; 211, sliding groove; 22, brake roller; 23, first corner roller;

[0039] 3, printing device; 31, spray head support; 32, spray head; 33, first driving mechanism;

[0040] 4, printing platform mechanism; 41, vacuum suction platform; 42, driving roller; 43, driven roller; 44, first arc-shaped notch; 45, second arc-shaped notch;

[0041] 5, drying mechanism;

[0042] 6, spray head vacuum moisturizing device; 61, mounting frame; 611, water tank; 612, water outlet; 62, bottom frame; 63, vacuum moisturizing assembly; 631, base; 632, vacuum moisturizing cavity; 633, base; 634, first sealing strip; 635, second sealing strip; 636, third sealing strip; 637, fourth sealing strip; 64, second driving mechanism; 65, first sliding rail; 66, first sliding part; 67, connecting frame; 68, second sliding rail;

[0043] ​​7, cleaning device; 71, cleaning plate; 711, cleaning groove; 712, first connecting plate; 713, second connecting plate; 714, third connecting plate; 715, fourth connecting plate; 716, bearing plate; 717, second sliding part; 72, third driving mechanism; 721, motor; 722, driving wheel; 723, driven wheel; 724, tension belt; 73, water spraying hole; 74, scraper; 75, cleaning seat; 751, inclined surface; 761, water inlet pipe; 762, water outlet pipe; 77, clamping block; 78, bearing groove; 79, drainage hole;

[0044] 8, ink extraction device;

[0045] 9, ink path system; 901, ink adding barrel; 902, first filter; 903, ink supply pump; 904, one-way valve; 905, ink inlet cavity; 906, butterfly filter; 908, ink outlet cavity; 909, circulating ink pump; 910, degassing lung; 911, first buffer tank; 912, first straight-through electromagnetic valve; 913, vacuum pump; 914, first vacuum gauge; 915, third filter; 916, negative pressure generator; 917, pressure sensor; 918, second buffer tank; 919, negative pressure shunt; 920, second straight-through electromagnetic valve; 921, second vacuum gauge; 922, second filter; 923, ink press pump; 924, pressure regulating valve; 925, positive pressure gauge; 926, three-way valve assembly; 927, liquid level sensor; 928, heating device. DETAILED DESCRIPTION

[0046] In order to make the technical problems solved by the present application, the technical solutions adopted and the technical effects achieved more clear, the technical solutions of the embodiments of the present application will be further described in detail below with reference to the drawings. Obviously, the described embodiments are only a part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0047] In the description of the present application, unless otherwise explicitly specified and limited, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0048] In the present application, unless otherwise explicitly specified and limited, "on" or "under" of a first feature to a second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, "on", "above" and "over" of a first feature to a second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the first feature is higher in horizontal height than the second feature. "Under", "below" and "underneath" of a first feature to a second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the first feature is lower in horizontal height than the second feature.

[0049] In the description of the present embodiments, the terms "upper", "lower", "left", "right", and other orientation or position relations shown in the drawings are based on the orientation or position relations shown in the drawings, only for the convenience of description and simplification of operation, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second" are only used to distinguish in description, and have no special meaning.

[0050] Embodiment One

[0051] As Figure 1 and 2As shown, the embodiment of the present application provides a super high-speed digital printing machine, which is mainly used for printing of roll media. The media C can be paper, cloth or other printable plastic materials, and the media C is not limited to the above-mentioned materials. The super high-speed digital printing machine comprises a rack 1. Preferably, the rack 1 is a marble rack. The marble has uniform structure, extremely small linear expansion coefficient, and completely disappeared internal stress, and has the characteristics of no deformation, good rigidity, high hardness, strong wear resistance and the like. When applied to the rack 1, the rack 1 has good stress. From the technical aspect, the marble rack can solve the problem of the rack precision of the steel structure of the current digital printing machine. A unwinding mechanism is arranged on the rack 1 and used for outputting the media C. A first constant tension roller mechanism 2 is arranged on the rack 1 and used for transmitting the media C and keeping the media C in a constant tension state. A printing device 3 is arranged on the rack 1 and used for printing the media C. A printing platform mechanism 4 is arranged on the rack 1 and located below the printing device 3, and used for transmitting the media C and cooperating with the printing device 3 to complete the printing of the media C. The printing platform mechanism 4 comprises a vacuum adsorption platform 41, a driving roller 42 and a driven roller 43. The driving roller 42 and the driven roller 43 are arranged on both sides of the vacuum adsorption platform 41 along a first direction X. A drying mechanism 5 is arranged on the rack 1 and used for drying the ink on the media C after the printing is completed. A winding mechanism is arranged on the rack 1 and used for receiving the media C. Preferably, the printing device 3 comprises a nozzle support 31, a nozzle 32 and a first driving mechanism 33. The nozzle 32 is installed on the nozzle support 31. The output end of the first driving mechanism 33 is connected to the nozzle support 31. The first driving mechanism 33 can control the nozzle support 31 to move up and down along a third direction Z. The first direction X and the third direction Z are perpendicular to each other. In this embodiment, the first driving mechanism 33 is a pneumatic cylinder.

[0052] The embodiment of the present application provides a kind of super-speed digital printing machine, it is mainly used for medium of winding, its working principle is, unwinding mechanism is sent to printing platform mechanism 4 with medium C, first constant tension roller mechanism 2 makes that medium C keeps constant tension state, vacuum adsorption platform 41 on printing platform mechanism 4 is adsorbed on its surface with medium C, driving roller 42 is used to provide the power of high-speed transmission, printing device 3 is printed on the top of printing platform with medium C, after completing printing, drying mechanism 5 is dried with ink on medium C after completing printing, finally, medium C is received with winding mechanism.It is compared to prior art, the embodiment of the present application adopts the structure of no guide band, utilizes medium C itself to be transmitted, can effectively improve printing precision, and utilizes the high-speed transmission of medium C itself, effectively improves printing efficiency.In addition, unwinding mechanism, winding mechanism, printing device 3 and drying mechanism 5 are integrally designed, can guarantee the consistent tension of medium when printing and the precision of medium when transmission, also can make the volume of printing machine smaller, save space, improve the precision of printing machine as a whole.

[0053] As shown in Figure 1 The first constant tension roller mechanism 2 is arranged between the unwinding mechanism and the printing platform mechanism 4 as a preferred mode of the embodiment of the present application.

[0054] The first constant tension roller mechanism 2 includes at least two first electronic shelves 21 arranged side by side, a brake roller 22 is slidably arranged on the first electronic shelf 21 along the length direction of the first electronic shelf 21, and a first corner roller 23 is arranged above the middle of the adjacent two first electronic shelves 21.

[0055] The unwinding mechanism comprises an unwinding roller 11 and an unwinding motor (not shown in the figure), the medium C is wound on the unwinding roller 11, the output end of the unwinding motor is connected to the unwinding roller 11, the unwinding roller 11 is driven to rotate, thereby conveying the medium C to the first constant tension roller mechanism 2, a second corner roller 13 is arranged between the unwinding roller 11 and the first constant tension roller mechanism 2, the second corner roller 13 is rotatably arranged on the rack 1, and the second corner roller 13 can keep the medium C in a tensioned state when the medium C is transmitted between the unwinding roller 11 and the first constant tension roller mechanism 2. In the embodiment of the application, the medium C is conveyed to the brake roller 22 of the first first electronic frame 21 after being unwound from the unwinding roller 11, the medium C is wound around the lower part of the brake roller 22 of the first first electronic frame 21, then is conveyed from the brake roller 22 to the first corner roller 23, the medium C is wound around the upper part of the first corner roller 23, then is conveyed from the first corner roller 23 to the brake roller 22 of the second first electronic frame 21, the medium C is wound around the lower part of the brake roller 22 of the second first electronic frame 21, and then is conveyed to the printing platform mechanism 4 for printing. The first electronic frame 21 and the brake roller 22 can be provided with at least two groups. Specifically, when the medium C is too tensioned, the unwinding mechanism will speed up the unwinding speed in order to keep constant tension, when the medium C is too loose, the unwinding mechanism will slow down the unwinding speed, through the adjustment of the at least two brake rollers 22, the medium C can keep a precise constant tension state when super-high-speed digital printing is performed, and the printing precision is effectively improved. Further, the first electronic frame 21 is provided with an upper displacement sensor (not shown in the figure) and a lower displacement sensor (not shown in the figure), the upper displacement sensor is located at the upper part of the first electronic frame 21 along the length direction, and the lower displacement sensor is located at the lower part of the first electronic frame 21 along the length direction. Specifically, the brake roller 22 is arranged between the upper displacement sensor and the lower displacement sensor, when the medium C is too tensioned, the medium C will lift the brake roller 22 along the length direction of the first electronic frame 21 and lift upward, when the position of the brake roller 22 sliding upward reaches the upper displacement sensor, the upper displacement sensor senses that the medium C is too tensioned, sends a signal to the unwinding mechanism, the unwinding mechanism speeds up the unwinding speed, so that the medium C is loosened, then the brake roller 22 slides downward under the action of gravity, when the medium C is too loose, the brake roller 22 slides downward to the lower displacement sensor under the action of gravity, the lower displacement sensor senses that the medium C is too loose, sends a signal to the unwinding mechanism, the unwinding mechanism slows down the unwinding speed, so that the medium C is tensioned, the whole process ensures that the brake roller 22 is between the upper displacement sensor and the lower displacement sensor, thereby keeping a constant tension, and the printing precision is effectively improved.Further, the first electronic frame 21 is provided with a sliding groove 211, and the brake roller 22 is slidingly arranged in the sliding groove 211. The brake roller 22 is rotatably and slidingly arranged in the sliding groove 211. An upper displacement sensor and a lower displacement sensor are arranged at the upper portion and the lower portion of the sliding groove 211, respectively. It is to be noted that the brake roller 22 is slidingly arranged on the first electronic frame 21, and can also be other sliding structures, such as a sliding rail and the like. In the embodiment of the present application, the first constant tension roller mechanism 2 and the unwinding mechanism are matched, and the first constant tension roller mechanism 2 plays a buffering role, so that the medium C is kept in a constant tension state. When the digital printing machine is paused, aerated or accelerated or decelerated, the printing medium C is always kept in a constant tension state, and cannot be loose. Otherwise, when printing, the alignment will be inaccurate, and a large number of unqualified products will be produced.

[0056] As shown in Figure 1 As a preferred mode of the embodiment of the present application, the present application provides an ultra-high-speed digital printing machine further comprising a first brush roller 14, which is arranged between the first constant tension roller mechanism 2 and the printing platform mechanism 4.

[0057] The first brush roller 14 is rotatably arranged on the rack 1. The first brush roller 14 can effectively prevent the medium C from being raised and the two sides from being loose. In the embodiment, the first electronic frame 21 is arranged in three, and the three first electronic frames 21 are arranged side by side. Specifically, the brake roller 22 is slidingly arranged on each of the three first electronic frames 21. The upper portion of the middle of the two adjacent first electronic frames 21 is also provided with a first corner roller 23. The second corner roller 13, the brake roller 22 of the first first electronic frame 21 and the first first corner roller 23 form a first "V" shape. The first first corner roller 23, the brake roller 22 of the second first electronic frame 21 and the second first corner roller 23 form a second "V" shape. The second first corner roller 23, the brake roller 22 of the third first electronic frame 21 and the first brush roller 14 form a third "V" shape. The medium C forms three "V" shapes, and the bottom of the "V" shape is adjustable, so that the medium C is kept in an optimal constant tension state, and the printing precision is effectively improved.

[0058] As shown in Figure 1 As a preferred mode of the embodiment of the present application, the present application provides an ultra-high-speed digital printing machine further comprising a corner wrapping roller 15, which is arranged between the first brush roller 14 and the driving roller 42. The center of the corner wrapping roller 15, the center of the driving roller 42 and the center of the driven roller 43 are connected to form an acute angle.

[0059] The wrap angle roller 15 is rotatably arranged on the frame 1, the wrap angle roller 15 is below the driving roller 42, and the center of the wrap angle roller 15, the center of the driving roller 42 and the center of the driven roller 43 form an acute angle, preferably, a magnetic powder brake (not shown in the figure) is arranged on the wrap angle roller 15, so that the resistance of the conveying medium C is increased, so as to ensure that the medium C does not slip when entering the driving roller 42, and keeps a constant tension state, thereby affecting the printing accuracy.

[0060] As shown in Figure 2 As a preferred mode of the embodiment of the present application, the vacuum adsorption platform 41 is provided with a first arc-shaped notch 44 on the side close to the driving roller 42 along the first direction X, the driving roller 42 is arranged in the first arc-shaped notch 44, the vacuum adsorption platform 41 is provided with a second arc-shaped notch 45 on the side close to the driven roller 43 along the first direction X, the driven roller 43 is arranged in the second arc-shaped notch 45, the driving roller 42 is rotatably arranged on the frame 1 by a driving roller motor (not shown in the figure), the driven roller 43 is rotatably arranged on the frame 1, the driving roller 42 is arranged in the first arc-shaped notch 44, and the driven roller 43 is arranged in the second arc-shaped notch 45, so as to reduce the gap between the medium C and the driving roller 42 and the gap between the vacuum system platform 41 and the driven roller 43, thereby preventing the medium C from being folded and rolled into the gap, so that the medium C is kept flat on the vacuum adsorption platform 41, a plurality of vacuum adsorption holes (not shown in the figure) are arranged on the vacuum adsorption platform 41, the principle of vacuum adsorption is the prior art, which will not be repeated here, in the embodiment of the present application, a structure without a guide belt is adopted, the medium C itself is used for transmission, and the medium C keeps a constant tension state and a perfect flat state during transmission, which can effectively improve the printing accuracy, and the high-speed transmission of the medium C itself effectively improves the printing efficiency.

[0061] As shown in Figure 3 、 4 As a preferred mode of the embodiment of the present application, the present application provides an ultrahigh-speed digital printing machine, as shown in

[0062] When the nozzles 32 are not working, the nozzle vacuum humidifying device can be moved to the right below the nozzles 32 along the first direction X, and then the nozzles 32 are moved downward to embed on the nozzle vacuum humidifying device 6 under the drive of the first driving mechanism 33. In the embodiment of the present application, the nozzle vacuum humidifying device 6 comprises a chassis 62 extending along the second direction Y, the second direction being perpendicular to the first direction and the third direction, and the upper surface of the chassis 62 is provided with n vacuum humidifying assemblies 63 corresponding to the n nozzles 32, n being a natural number. Specifically, the vacuum humidifying assemblies 63 are provided according to the number of the nozzles 32, if the number of the nozzles 32 on the super-high digital printing machine is one hundred, then one hundred vacuum humidifying assemblies 63 are correspondingly provided. The vacuum humidifying assembly 63 comprises a base 631 and a vacuum humidifying cavity 632 provided with an opening on the top, the base 631 is fixed to the chassis 62, preferably, the base 631 is detachably fixed to the chassis 62 by screws, so that the number of the vacuum humidifying assemblies 63 can be freely selected according to the number of the nozzles 32, and the vacuum humidifying cavity 632 is arranged above the base 631, the shape and size of the vacuum humidifying cavity 632 match those of the nozzle 32. Specifically, when the nozzle 32 stops working, the nozzle 32 is embedded in the vacuum humidifying cavity 632, and the shape and size of the vacuum humidifying cavity 632 match those of the nozzle 32. Compared with the traditional large nozzle vacuum humidifying device 6, the embodiment of the present application can make the nozzle 32 maintain vacuum, which is beneficial to the maintenance and protection of the nozzle 32, and the nozzles 32 do not affect each other. Further, the vacuum humidifying assembly 63 further comprises a base 633 arranged above the base 631, and the upper surface of the base 633 is provided with a first sealing strip 634, a second sealing strip 635, a third sealing strip 636 and a fourth sealing strip 637, the first sealing strip 634, the second sealing strip 635, the third sealing strip 636, the fourth sealing strip 637 and the base 633 surround the vacuum humidifying cavity 632. Specifically, the first sealing strip 634, the second sealing strip 635, the third sealing strip 636 and the fourth sealing strip 637 are connected end to end to form a sealing ring, when the nozzle 32 is embedded in the vacuum humidifying cavity 632, the first sealing strip 634, the second sealing strip 635, the third sealing strip 636 and the fourth sealing strip 637 seal each side of the nozzle 32 to maintain the sealed vacuum state of the vacuum humidifying cavity 632. Preferably, the vacuum humidifying assembly 63 further comprises a vacuum pumping device (not shown in the figure), which communicates with the vacuum humidifying cavity 632 to ensure the vacuum of the vacuum humidifying cavity 632.The vacuum moisturizing cavity 632 can also communicate with a pipeline for collecting ink, because the inkjet head 32 will be scattered at irregular intervals when not working to avoid clogging of the inkjet head 32, and the scattered ink can be recycled through the pipeline to avoid waste of ink. Further, the inkjet head vacuum moisturizing device 6 further comprises a mounting frame 61 and a second driving mechanism 64, the chassis 62 is arranged on the mounting frame 61, and the mounting frame 61 is arranged along the second direction Y, and the second driving mechanism 64 can drive the mounting frame 61 to slide along the first direction X, and the first direction X, the second direction Y and the third direction Z are perpendicular. Specifically, in actual work, for the super-speed digital printing machine, the inkjet head 32 moves up and down, and the printing platform mechanism 4 is directly below the inkjet head 32, so it is necessary to arrange the vacuum moisturizing assembly 63 below the inkjet head 32. In the embodiment, the second driving mechanism 64 can drive the mounting frame 61 to slide along the first direction X, so as to drive the vacuum moisturizing assembly 63 to slide directly below the inkjet head 32, and then the inkjet head 32 is lowered to be embedded in the vacuum moisturizing assembly 63. When the inkjet head 32 needs to work, the mounting frame 61 is driven to move out by the second driving mechanism 64. Further, the inkjet head vacuum moisturizing device 6 further comprises a first sliding rail 65, the first sliding rail 65 is mounted on the rack 1, and the mounting frame 61 is provided with the first sliding rail 65 on both sides along the second direction Y, and the mounting frame 61 is provided with a first sliding part 66 at the bottom of both sides along the second direction Y, preferably, the first sliding part 66 is a pulley or a sliding block, the first sliding part 66 is slidably arranged on the first sliding rail 65, the output end of the second driving mechanism 64 is connected with the mounting frame 61, and the second driving mechanism 64 can be provided with two groups or one group, and in the embodiment, the second driving mechanism 64 is provided with two groups and arranged on both sides of the mounting frame 61 along the second direction Y. Specifically, the output end of the second driving mechanism 64 controls the mounting frame 61 to slide along the first direction X on the first sliding rail 65 through the first sliding part 66. Further, the second driving mechanism 64 is a linear motor 721, and the mounting frame 61 is provided with a connecting frame 67, and the output end of the linear motor 721 is connected with the connecting frame 67.

[0063] As Figure 3 、 4 and 6, the inkjet head cleaning device 7 is slidably arranged on the inkjet head vacuum moisturizing device 6 and can slide along the second direction Y.

[0064] After the working of the spray head 32, the spray head 32 needs to be cleaned, otherwise the spray head 32 will be blocked, the spray head vacuum moisturizing device in the embodiment of the application is combined with the spray head cleaning device 7, the mounting frame 61 slides to the lower side of the spray head 32 along the first direction X, and then the spray head cleaning device 7 slides along the second direction Y to clean the spray head 32. Specifically, the spray head cleaning device 7 comprises a cleaning plate 71 which is slidingly arranged on both sides of the mounting frame 61 along the first direction X; a third driving mechanism 72, the output end of which is connected to the cleaning plate 71, so that the cleaning plate 71 can automatically slide on the mounting frame 61 along the second direction Y; wherein the cleaning plate 71 is provided with a water spraying hole 73 and a scraper 74, and the water spraying hole 73 and the scraper 74 are arranged side by side along the second direction Y. When the water spraying hole 73 and the scraper 74 are arranged side by side along the second direction Y, the left and right positions of the water spraying hole 73 and the scraper 74 are not limited, because in actual work, if the mounting frame 61 slides from the right to the left along the second direction Y, the scraper 74 is on the right side of the water spraying hole 73, and if the mounting frame 61 slides from the left to the right along the second direction Y, the scraper 74 is on the left side of the water spraying hole 73. Preferably, the scraper 74 is a flexible scraper 74, which can avoid damage to the spray head 32 caused by a hard scraper 74. Specifically, when the spray head cleaning device 7 is working, the spray head 32 is above the mounting frame 61, the cleaning plate 71 slides on the mounting frame 61 along the second direction Y, in the sliding process, the water spraying hole 73 sprays water upward to clean the spray head 32, and simultaneously, because the water spraying hole 73 and the scraper 74 are arranged side by side along the second direction Y, the scraper 74 immediately scrapes the spray head 32 after spraying, effectively improving the cleaning efficiency of the spray head 32, and when the number of spray heads 32 is too large, the cleaning of the spray heads 32 can also be quickly completed with the sliding of the cleaning plate 71. Further, the cleaning plate 71 comprises a cleaning groove 711 provided with an opening at the top, and the water spraying hole 73 and the scraper 74 are arranged in the cleaning groove 711. Specifically, the cleaning plate 71 comprises a first connecting plate 712, a second connecting plate 713, a third connecting plate 714, a fourth connecting plate 715 and a bearing plate 716, the first connecting plate 712, the second connecting plate 713, the third connecting plate 714, the fourth connecting plate 715 and the bearing plate 716 surround the cleaning groove 711 provided with an opening at the top, and the water spraying hole 73 and the scraper 74 are arranged on the upper surface of the middle part of the bearing plate 716. Further, the cleaning groove 711 is provided with a cleaning seat 75, the water spraying hole 73 is arranged on the upper surface of the cleaning seat 75, and the side surface of the cleaning seat 75 is provided with a water delivery pipe which communicates with the water spraying hole 73.Specifically, the cleaning seat 75 is fixedly arranged on the upper surface of the bearing plate 716 and fixed to the bearing plate 716 by a screw. The number of the cleaning seat 75 is not limited and can be set according to the arrangement number corresponding to the nozzle 32. In this embodiment, two cleaning seats 75 are arranged side by side along the first direction X. The water supply pipe includes a water inlet pipe 761 and a water outlet pipe 762. In this embodiment, the water inlet pipe 761 is arranged on the side of one of the cleaning seats 75, and the water outlet pipe 762 is arranged on the side of the other cleaning seat 75. Water can flow through the water inlet pipe 761 to the water outlet pipe 762. It should be noted that when there is only one cleaning seat 75, the water inlet pipe 761 and the water outlet pipe 762 are arranged on the cleaning seat 75. When there are multiple cleaning seats 75, the water inlet pipe 761 is arranged on the first cleaning seat 75, and the water outlet pipe 762 is arranged on the other cleaning seat 75. Then, the remaining cleaning seats 75 are communicated. In this way, the redundancy of arranging multiple water inlet pipes 761 and multiple water outlet pipes 762 can be avoided. Specifically, when water flows into the water supply pipe, the water is sprayed from the water spray hole 73 under the action of water pressure to clean the nozzle 32. It should be noted that a corresponding pressure device (not shown in the figure) can also be arranged in the cleaning seat 75 to control the size of the water pressure. Preferably, the scraper 74 is mounted on the cleaning seat 75. Specifically, the scraper 74 is arranged side by side with the water spray hole 73 along the second direction Y. The scraper 74 is mounted on both sides of the cleaning seat 75 along the second direction Y. The scraper 74 can be mounted by a screw or other means. In this embodiment, the cleaning seat 75 further includes a clamping block 77. The clamping block 77 clamps the scraper 74, and then the clamping block 77 is fixed to the cleaning seat 75 by a screw to complete the installation of the scraper 74. Preferably, the first connecting plate 712 is provided with a bearing groove 78, which is mainly used for positioning the connection of the water supply pipe and the external water supply pipeline. Further, in order to drain the sewage after cleaning the nozzle 32, the bottom of the cleaning tank 711 is provided with a drain hole 79, and the mounting frame 61 is provided with a water tank 611. The water tank 611 is communicated with the drain hole 79. Specifically, the bearing plate 716 is provided with a drain hole 79, and the mounting frame 61 is provided with an open water tank 611 at the top. The water tank 611 is communicated with the drain hole 79 by a pipeline. The sewage after cleaning the nozzle 32 can be drained into the water tank 611. The water tank 611 is provided with a water outlet 612 to drain the sewage after cleaning. Further, the cleaning seat 75 includes an inclined surface 751 connected to the upper surface of the cleaning seat 75. The inclined surface 751 is arranged on one side close to the drain hole 79. When the nozzle 32 is cleaned, the water will fall again. The inclined surface 751 helps the water flow along the inclined surface 751 to the drain hole 79 to quickly drain the sewage after cleaning.Furthermore, the mounting bracket 61 is provided with second slide rails 68 on both sides along the first direction X, and the cleaning plate 71 is provided with second sliding components 717 on both sides along the first direction X. Preferably, the second sliding component 717 is a slider or a pulley; in this embodiment, it is a slider. Furthermore, the third drive mechanism 72 includes a motor 721, a drive wheel 722, a driven wheel 723, and a tension belt 724. The output end of the motor 721 is connected to the drive wheel 722. The driven wheel 723 is rotatably disposed on the side of the mounting bracket 61 along the first direction X. The tension belt 724 is disposed between the drive wheel 722 and the driven wheel 723, and is parallel to the second slide rails 68. The tension belt 724 is connected to the cleaning plate 71. The tension belt 724 is connected to the second sliding component 717. When the motor 721 rotates, it drives the drive wheel 722 to rotate, thereby causing the tension belt 724 to move linearly between the drive wheel 722 and the driven wheel 723, which in turn causes the second sliding component 717 to slide, and thus the entire cleaning plate 71 to slide. In this embodiment of the invention, during actual operation, the mounting bracket 61 slides below the nozzle 32, the nozzle 32 moves downward to a suitable cleaning position, and the cleaning seat 75 slides along the second direction Y. During the sliding process, the water spray hole 73 sprays water to clean the nozzle 32, and the scraper 74 simultaneously scrapes across the nozzle 32. After cleaning, the cleaning plate 71 is reset, and then the nozzle 32 continues to move downward and embed into the nozzle vacuum humidification device 6 for maintenance and protection.

[0065] like Figure 7 As shown, in a preferred embodiment of the present invention, the present invention provides an ultra-high-speed digital printing machine that further includes an ink path system 9, which is connected to the printing device 3.

[0066] The ink path system 9 is arranged on the frame 1, and is connected with the nozzle 32 of the printing device 3 to supply ink to the nozzle 32, wherein the nozzle 32 is an Epson non-industrial nozzle 32; preferably, the nozzle 32 is an Epson S3220 nozzle or the nozzle is an Epson I3220 nozzle. The ink path system 9 comprises: an ink adding assembly for supplying ink to the ink path system 9; an ink circulation assembly connected with the ink adding assembly and used for controlling the circulation and pressure difference relationship of the nozzle 32; and a positive and negative pressure control assembly connected with the ink circulation assembly and used for controlling the positive and negative pressure of the ink circulation assembly. In the embodiment of the present application, the ink path system 9 is connected with the nozzle 32 to supply ink to the nozzle 32, wherein the nozzle 32 is an Epson non-industrial nozzle 32; the ink adding assembly supplies ink to the ink path system 9; the ink circulation assembly is used for controlling the circulation and pressure difference relationship of the nozzle 32; and the positive and negative pressure control assembly is connected with the ink circulation assembly and used for controlling the positive and negative pressure of the ink circulation assembly. Through the ink circulation assembly and the positive and negative pressure control assembly, the whole ink path system 9 can maintain stable negative pressure, so that the ink supply of the whole super-high-speed digital printing machine is stable, and the structure is simple, and the production efficiency is effectively improved. The ink circulation assembly comprises: a secondary ink box comprising an ink inlet cavity 905 and an ink outlet cavity 908, wherein liquid level sensors 927 are arranged in the ink inlet cavity 905 and the ink outlet cavity 908, the liquid level sensors 927 are used for sensing the liquid level of ink in the ink inlet cavity 905 and the ink outlet cavity 908 to ensure that the liquid level height is maintained during the ink printing process, the ink inlet cavity 905 is connected with an ink inlet of the nozzle 32, and the ink outlet cavity 908 is connected with an ink outlet of the nozzle 32; specifically, the ink adding assembly is connected with the ink inlet cavity 905 to supply ink to the whole ink circulation assembly, after the ink enters the ink inlet cavity 905, the ink is transmitted to the ink inlet of the nozzle 32, preferably, a butterfly filter 906 is arranged between the ink inlet cavity 905 and the ink inlet of the nozzle 32, the butterfly filter 906 can filter out impurities above 5 μm in the ink to prevent the nozzle 32 from being blocked due to too large impurity particles during printing, and the printing quality is improved; a circulation ink pump 909 is connected with the ink outlet cavity 908 and used for pumping out the ink in the ink outlet cavity 908 to control the circulation and pressure difference relationship of the nozzle 32 by adjusting the flow of the circulation ink pump 909; and a degassing lung 910 is connected with the circulation ink pump 909 and the ink inlet cavity 905 respectively, and the degassing lung 910 is further connected with a circulation negative pressure component.Specifically, since the ink force is large and accompanied by bubbles after passing through the ink supply pump 903, it will affect the stability of the entire ink circulation assembly and also affect the printing effect of the printhead 32. The degassing lung 910 can remove the bubbles, and the ink is removed from the bubbles before being transmitted to the ink inlet chamber 905. Preferably, the circulation negative pressure component comprises: a first buffer tank 911 connected with the degassing lung 910; a first vacuum gauge 914 connected with the first buffer tank 911; a first straight-through electromagnetic valve 912 connected with the first buffer tank 911; and a vacuum pump 913 connected with the first straight-through electromagnetic valve 912. Specifically, the circulation negative pressure component is used to ensure a stable negative pressure of the ink circulation assembly. The requirement of the negative pressure is -70Kpa to -80Kpa. Preferably, the first buffer tank 911 is made of stainless steel, and the capacity of the first buffer tank 911 is 1L. The first buffer tank 911 made of stainless steel can prevent the material from changing and rusting, thereby affecting the stability of the negative pressure. The capacity of 1L is an optimal selection for the negative pressure fluctuation during printing, which plays a buffering role during the negative pressure to ensure the stability of the negative pressure. Further, the ink adding assembly comprises: an ink adding barrel 901, which is provided with an ink adding port for adding ink to the ink adding barrel 901, and is internally provided with a liquid level sensor. The liquid level sensor 927 can sense the liquid level of the ink in the ink adding barrel 901 to ensure that the ink maintains a certain liquid level; a first filter 902 connected with the ink adding, which is used to filter impurities above 10μm in the ink; an ink supply pump 903 connected with the first filter 902, which draws out the ink in the ink adding barrel 901 to supply ink to the ink inlet chamber 905; a one-way valve 904, one end of which is connected with the ink supply pump 903, and the other end of which is connected with the ink inlet chamber 905. The one-way valve 904 ensures that the ink is delivered in one direction and cannot backflow. Further, the positive and negative pressure control assembly comprises a positive pressure control assembly and a negative pressure control assembly; the positive pressure control assembly is connected with the ink inlet chamber 905; and the negative pressure control assembly is connected with the ink outlet chamber 908 to maintain a pressure difference of -20Kpa to -40Kpa between the ink inlet chamber 905 and the ink outlet chamber 908.The positive pressure control assembly comprises a second filter 922 in communication with external air for filtering impurities in the air, an ink pump 923 connected with the second filter 922 for providing positive pressure, a pressure regulating valve 924 connected with the ink pump 923 for adjusting the size of the positive pressure, a three-way valve assembly 926 connected with the pressure regulating valve 924 and also connected with the ink inlet cavity 905 and the ink outlet cavity 908 respectively, the three-way valve assembly 926 being capable of freely switching to the ink inlet cavity 905 or the ink outlet cavity 908, and a positive pressure gauge 925 connected with the pressure regulating valve 924 for detecting the size of the positive pressure after the adjustment of the pressure regulating valve 924, so as to ensure that the positive pressure is within 0-80 Kpa. Further, the negative pressure control assembly comprises a third filter 915 connected with external air for filtering impurities in the control, a negative pressure generator 916 connected with the third filter 915 for providing negative pressure, a second buffer tank 918 connected with the negative pressure generator 916, the second buffer tank 918 also being connected with a pressure sensor 917, preferably, the second buffer tank 918 is made of stainless steel, the capacity of the second buffer tank 918 being 1L, the second buffer tank 918 being made of stainless steel can prevent the material from being changed and rusted, so as to affect the stability of the negative pressure, and the capacity of 1L is an optimal selection for the negative pressure fluctuation during printing, the second buffer tank 918 playing a buffering role to ensure the stability of the negative pressure, the pressure sensor 917 being used for reflecting the value of the pressure, a negative pressure shunt pipe 919 connected with the second buffer tank 918, the negative pressure being capable of being divided into four through the negative pressure shunt pipe 919 and connected to the ink outlet cavity 908, so as to avoid that each ink outlet cavity 908 is connected with the second buffer tank 918, simplify the connection structure, save the space and avoid redundancy, a second straight electromagnetic valve 920 connected with the negative pressure shunt pipe 919, the second straight electromagnetic valve 920 also being connected with the ink outlet cavity 908, and a second vacuum gauge 921 connected with the second buffer tank 918. In the embodiment of the application, the ink adding assembly supplies ink for the secondary ink cartridge, the positive pressure assembly provides positive pressure for the ink inlet cavity 905 of the secondary ink cartridge, the negative pressure control assembly provides negative pressure for the ink outlet cavity 908 of the secondary ink cartridge, the circulating ink pump 909 and the circulating negative pressure component provide circulating negative pressure for the ink inlet cavity 905, the inkjet head 32 and the ink outlet cavity 908, the whole ink path system 9 has simple structure and high stability, and can effectively improve the printing quality. Further, when the inkjet head 32 needs to be cleaned, the first straight electromagnetic valve 912 and the second straight electromagnetic valve 920 can be closed, and the ink supply is stopped at the same time, the cleaning of the inkjet head 32 is assisted by the positive pressure of the positive pressure control assembly, when the cleaning is completed, the three-way valve assembly is connected from the ink inlet cavity 905 to the ink outlet cavity 908, the switching of the positive pressure and the negative pressure is completed, and the cleaning of the inkjet head 32 is stopped, and the switching of the three-way valve can be performed according to the need of the switching of the positive pressure and the negative pressure.Further, the secondary ink cartridge and / or the ink adding barrel 901 is provided with a heating device 928 capable of monitoring the temperature of the ink and heating the ink. Specifically, the heating device 928 is provided with a temperature control function, which can monitor the temperature of the ink. When the temperature of the ink is too low, the viscosity of the ink will change, which will affect the printing quality. At this time, the heating device will heat the ink, which can improve the stability of the ink and prevent the viscosity of the ink from changing greatly, thereby ensuring the smoothness and color stability of the ink.

[0067] As shown in Figure 1 As a preferred mode of the embodiment of the present application, the drying mechanism 5 is arranged below the printing platform mechanism 4. In this way, the space of the super-high-speed digital printing machine can be saved, and the structure of the super-high-speed digital printing machine is more compact and has a higher integration. A second electronic frame 16 is arranged between the printing platform mechanism 4 and the drying mechanism 5, and a second brush roller 17 is slidingly arranged on the second electronic frame 16. The principle of slidingly arranging the second brush roller 17 on the second electronic frame 16 is the same as that of the first electronic frame 21, which will not be described here. By arranging the second brush roller 17, the medium C can be effectively prevented from being buckled between the drying mechanism 5 and the printing platform mechanism 4, and a constant tension and a steering function can be achieved. A third corner roller 18 assisting in corner turning is arranged between the drying mechanism 5 and the second brush roller 17, and the third corner roller 18 is rotatably arranged on the rack 1. The drying mechanism 5 is a prior art, which will not be described here. Further, a third brush roller 19 is arranged between the drying mechanism 5 and the winding mechanism, and the third brush roller 19 is rotatably arranged on the rack 1. The third brush roller 19 also effectively prevents the medium C from being buckled, so that the medium C can be smoothly wound on the winding mechanism. The winding mechanism includes a winding roller 12 and a winding motor (not shown in the figure), and the output end of the winding motor is connected to the winding roller 12 to control the rotation of the winding roller 12.

[0068] As shown in Figure 1 As a preferred mode of the embodiment of the present application, the drying mechanism 5 is arranged below the printing platform mechanism 4. In this way, the space of the super-high-speed digital printing machine can be saved, and the structure of the super-high-speed digital printing machine is more compact and has a higher integration. A second electronic frame 16 is arranged between the printing platform mechanism 4 and the drying mechanism 5, and a second brush roller 17 is slidingly arranged on the second electronic frame 16. The principle of slidingly arranging the second brush roller 17 on the second electronic frame 16 is the same as that of the first electronic frame 21, which will not be described here. By arranging the second brush roller 17, the medium C can be effectively prevented from being buckled between the drying mechanism 5 and the printing platform mechanism 4, and a constant tension and a steering function can be achieved. A third corner roller 18 assisting in corner turning is arranged between the drying mechanism 5 and the second brush roller 17, and the third corner roller 18 is rotatably arranged on the rack 1. The drying mechanism 5 is a prior art, which will not be described here. Further, a third brush roller 19 is arranged between the drying mechanism 5 and the winding mechanism, and the third brush roller 19 is rotatably arranged on the rack 1. The third brush roller 19 also effectively prevents the medium C from being buckled, so that the medium C can be smoothly wound on the winding mechanism. The winding mechanism includes a winding roller 12 and a winding motor (not shown in the figure), and the output end of the winding motor is connected to the winding roller 12 to control the rotation of the winding roller 12.

[0069] Embodiment Two

[0070] As shown in Figure 8As shown, on the basis of the first embodiment, the embodiment of the present application provides an ultra-high-speed digital printing machine, a second constant tension roller mechanism 113 is arranged between the winding mechanism and the drying mechanism 5. The second constant tension roller mechanism 113 can further make the medium C keep a constant tension state, the principle of the second constant tension roller mechanism 113 is the same as that of the first constant tension roller mechanism 2, which will not be repeated here, a fourth corner roller 110 for corner and a fourth brush roller 111 for preventing wrinkles are further arranged between the second constant tension roller mechanism 113 and the drying mechanism 5, and the fourth corner roller 110 and the fourth brush roller 111 are rotationally arranged on the rack 1.

[0071] It should be noted that the above are only the preferred embodiments of the present application and the technical principles applied. Those skilled in the art will understand that the present application is not limited to the specific embodiments described herein, and those skilled in the art can make various obvious changes, readjustments and substitutions without departing from the scope of the present application. Therefore, although the present application has been described in more detail through the above embodiments, the present application is not limited to the above embodiments, and can include more other equivalent embodiments without departing from the concept of the present application, and the scope of the present application is determined by the scope of the appended claims.

Claims

1. An ultra-high speed digital printing machine, characterized in that, The utility model relates to a printing device, including: Frame (1); Unwinding mechanism, be provided with on the frame (1), be used for output medium; First constant tension roller mechanism (2), be provided with on the frame (1), be used for transmission medium, and make medium keep constant tension state; Printing device (3), be provided with on the frame (1), be used for printing to medium; Printing platform mechanism (4), be provided with on the frame (1), and be located the below of printing device (3), and printing device (3) includes the nozzle (32), be used for transmission medium and cooperate printing device (3) complete printing to medium, printing platform mechanism (4) includes vacuum adsorption platform (41), driving roller (42) and driven roller (43), driving roller (42) and driven roller (43) are arranged respectively in the two sides of vacuum adsorption platform (41) along the first direction, the first arc-shaped gap (44) is set up in the side of vacuum adsorption platform (41) along the first direction close to driving roller (42), and driving roller (42) is set up in the first arc-shaped gap (44), the second arc-shaped gap (45) is set up in the side of vacuum adsorption platform (41) along the first direction close to driven roller (43), and driven roller (43) is set up in the second arc-shaped gap (45), a plurality of vacuum adsorption holes are set up on vacuum adsorption platform (41), and it is the structure form without guide band, utilizes medium itself to transmission, and medium keeps constant tension state and perfect flat state in the transmission process; Drying mechanism (5), be provided with on the frame (1), be used for drying the ink on medium after printing is completed; Winding mechanism, be provided with on the frame (1), be used for accomodating medium; Nozzle vacuum moisturizing device (6), nozzle vacuum moisturizing device (6) is set up on the frame (1), can slide to the below of printing device (3) along the first direction; Nozzle vacuum moisturizing device (6) includes mounting bracket (61), underframe (62), second drive mechanism (64) and vacuum moisturizing component (63), underframe (62) is set up on mounting bracket (61), vacuum moisturizing component (63) is set up on the upper surface of underframe (62), the both sides of mounting bracket (61) along the second direction are provided with first slide rail (65), and the bottom of both sides of mounting bracket (61) along the second direction is provided with first sliding part (66), first sliding part (66) is set up on first slide rail (65), the output end of second drive mechanism (64) is connected mounting bracket (61), and the output end of second drive mechanism (64) controls mounting bracket (61) to slide along the first direction on first slide rail (65) through first sliding part (66), and second drive mechanism (64) is linear motor, and connecting frame (67) is set up on mounting bracket (61), and the output end of linear motor is connected connecting frame (67); The nozzle cleaning device (7) is slidably arranged on the nozzle vacuum moisturizing device (6), and the nozzle cleaning device (7) can slide along the second direction. The nozzle cleaning device comprises a cleaning plate (71) and a third driving mechanism (72), the output end of the third driving mechanism (72) is connected with the cleaning plate (71), so that the cleaning plate (71) can automatically slide on the mounting rack (61) along a second direction, the cleaning plate (71) comprises a cleaning groove (711) provided with an opening at the top, a cleaning seat (75) is arranged in the cleaning groove (711), a water spraying hole (73) is arranged on the upper surface of the cleaning seat (75), a scraper (74) is arranged on the cleaning seat (75), and the cleaning seat (75) comprises an inclined surface (751) connected with the upper surface of the cleaning seat (75); The mounting rack (61) slides to the lower side of the nozzle (32), the nozzle (32) moves downward to a suitable cleaning position, the cleaning seat (75) slides along the second direction, in the process of sliding, the water spraying hole (73) sprays water to clean the nozzle (32), the scraper (74) simultaneously scrapes the nozzle (32), after cleaning, the cleaning plate (71) is reset, and then the nozzle (32) continues to move downward to be embedded into the nozzle vacuum moisturizing device (6) to be maintained and protected; Second sliding parts are arranged on the two sides of the cleaning plate along the first direction. The first direction is the X axis, the second direction is the Y axis, and the third direction is the Z axis, and the first direction, the second direction and the third direction are perpendicular to each other.

2. The super high speed digital printing machine according to claim 1, wherein The first constant tension roller mechanism (2) is arranged between the unwinding mechanism and the printing platform mechanism (4). The first constant tension roller mechanism (2) comprises at least two first electronic frames (21) arranged side by side, a brake roller (22) is slidably arranged on the first electronic frame (21) along the length direction of the first electronic frame (21), and a first corner roller (23) is arranged above the middle of the two adjacent first electronic frames (21).

3. The super high speed digital printing machine according to claim 2, wherein A first brush roller (14) is further arranged between the first constant tension roller mechanism (2) and the printing platform mechanism (4).

4. The super high speed digital printing machine according to claim 3, wherein An angle wrapping roller (15) is further arranged between the first brush roller (14) and the driving roller (42), and the center of the angle wrapping roller (15), the center of the driving roller (42) and the center of the driven roller (43) are connected to form an acute angle.

5. The super high speed digital printing machine according to claim 1, wherein An ink path system (9) is further connected with the printing device (3). The ink path system (9) comprises an ink adding assembly, an ink circulation assembly and a positive and negative pressure control assembly, the ink adding assembly provides ink for the ink path system (9), the ink circulation assembly is connected with the ink adding assembly and is used for controlling the circulation and pressure difference relationship of the nozzle (32), and the positive and negative pressure control assembly is connected with the ink circulation assembly and is used for controlling the positive and negative pressure of the ink circulation assembly. The ink circulation assembly comprises a secondary ink cartridge comprising an ink inlet cavity (905) and an ink outlet cavity (908). The positive and negative pressure control assembly comprises a positive pressure control assembly and a negative pressure control assembly; the positive pressure control assembly is connected with the ink inlet cavity (905); the negative pressure control assembly is connected with the ink outlet cavity (908), and the pressure difference between the ink inlet cavity (905) and the ink outlet cavity (908) is kept at-20KPa to-40KPa.

6. The ultra-high-speed digital printing machine according to any one of claims 1 to 5, characterized in that, The drying mechanism (5) is arranged below the printing platform mechanism (4).

7. The super high speed digital printing machine according to claim 6, wherein A second electronic frame (16) is arranged between the printing platform mechanism (4) and the drying mechanism (5), and a second brush roller (17) is slidably arranged on the second electronic frame (16).

8. The super high speed digital printing machine according to claim 6, wherein A second constant tension roller mechanism (113) is arranged between the winding mechanism and the drying mechanism (5).

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