Monochrome digital printing device used for being integrated with flexographic printing equipment

Abstract

The utility model relates to a single-color digital printing device used for being integrated with flexographic printing equipment, which comprises a single-color digital printing device body, the single-color digital printing device body comprises a single-color printing module, a single-color main frame and a single-color feeding module, the bottom of the single-color main frame is connected with a supporting track on a flexographic printing device, and the single-color feeding module is connected with the single-color printing module. The relative position between the single-color main frame and the supporting track can be adjusted; the single-color feeding module is arranged at the front part of the single-color main frame, the single-color printing module is arranged above the single-color main frame, a plurality of printing nozzles are mounted on the single-color printing module, the bottom surfaces of the printing nozzles are parallel to the upper surface of a printing medium on the single-color feeding module below the printing nozzles, and the distance between the printing nozzles and the printing medium is adjustable. Effective integration of a digital printing device and flexographic printing equipment is realized, so that one-stop online printing of flexographic printing and digital printing is realized, the production cost is effectively reduced, the production efficiency is improved, and the upgrading and reconstruction cost is saved.

Description

Technical Field

[0001] This utility model relates to the field of printing equipment technology, and specifically to a monochrome digital printing device for integration with flexographic printing equipment. Background Technology

[0002] Flexographic printing, initially known as aniline printing, originated in the United States in the early 1920s. Its development was hindered by the toxicity of aniline dye inks used. Subsequently, ink manufacturers began using more widely accepted and acceptable pigments, and in 1952, at the 14th Packaging Symposium in the United States, it was renamed flexographic printing. From the mid-1970s onwards, advancements in materials science, particularly the advent of polymer resin plates and metal-ceramic anilox rollers, spurred a qualitative leap in the development of flexographic printing. It became the fastest-growing printing method worldwide, especially in the United States, where it achieved significant development. Both printing press manufacturing technology and flexographic application technology represent the highest level of flexographic printing. Almost all product packaging seen in the US domestic market is flexographic printed. Statistics show that flexographic printing holds a 70% market share in flexible packaging printing, 85% in label printing, 98% in corrugated paper printing, and 25% in carton printing in the United States.

[0003] Flexographic printing boasts advantages such as high print quality, high production efficiency, high printing speed, low investment, and high returns. Thanks to high-quality resin plates and ceramic anilox rollers, printing precision reaches 175 lines per inch, with a full ink layer thickness, resulting in rich product detail and vibrant colors. It is particularly suitable for packaging printing, achieving a striking color effect that offset printing often cannot match. It combines the clarity of letterpress printing, the softness of offset printing, and the thick ink layer and high gloss of gravure printing. Flexographic printing equipment typically uses roll-to-roll materials, allowing for continuous operation from double-sided multi-color printing to varnishing, lamination, hot stamping, die-cutting, waste removal, rewinding, or slitting. In contrast, offset printing often requires more personnel and multiple machines in three or four steps. Therefore, flexographic printing significantly shortens the printing cycle and reduces costs, giving it a competitive edge in a highly competitive market. Flexographic printing speeds can reach 150–200 m / min, generally 1.5–2 times that of offset and gravure printing presses, enabling high-speed multi-color printing. Modern flexographic printing presses have advantages such as short ink transfer paths, fewer ink transfer parts, and lighter weight, resulting in a simpler structure and significantly reduced material usage. Therefore, the investment in flexographic printing machines is much lower than that of single-color offset printing presses. Consequently, flexographic printing holds a substantial market share in China.

[0004] However, due to market demand, printed designs in industries such as flexible packaging and labels often have variable data. If flexographic printing is still used, multiple plate-making and changing processes are required, making it less cost-effective. Therefore, digital printing is now widely used for variable data portions. Digital printing is the digitization of printing technology, unlike the plate-making process of flexographic printing. Its characteristics include single-sheet printing, no need for plate-making, variable printing, and on-demand printing. Currently, the combination of flexographic and digital printing in the market often involves first using flexographic printing to complete the printing of non-variable data, and then using a digital printer to print the variable data portions of the entire batch of printing media. This method has the following disadvantages:

[0005] ① Original flexographic printing manufacturers need to purchase digital printers to print variable data parts, but digital printers are expensive, thus increasing production costs.

[0006] ② Digital printing is usually performed on the printing media after flexographic printing. This method often produces color misregistration problems, which places high demands on the correction and color registration accuracy of the digital printer, thereby further increasing equipment and production costs. Even if the accuracy of the digital printer is improved, the problem of color misregistration cannot be avoided.

[0007] ③ Currently, some manufacturers in the market are trying to achieve one-stop printing by embedding a whole digital printer in the flexographic printing production line. However, this method can only add a whole digital printer before or after the overall flexographic printing production line module. It is not only bulky and takes up a lot of space, but also cannot be flexibly adjusted in position. It is highly specialized, and for special printing needs, it is impossible to insert the digital printer between two printing modules of flexographic printing, resulting in the inability to meet specific printing needs. Utility Model Content

[0008] The present invention aims to provide a monochrome digital printing device for integration with flexographic printing equipment to overcome the shortcomings of the prior art. The technical problem to be solved by the present invention is achieved through the following technical solution.

[0009] A monochrome digital printing device for integration with flexographic printing equipment includes a monochrome digital printing device body. The monochrome digital printing device body includes a monochrome printing module, a monochrome main frame, and a monochrome feed module. The monochrome printing module and the monochrome feed module are mounted on the monochrome main frame. The bottom of the monochrome main frame is connected to a support rail on the flexographic printing equipment, and the relative position between the monochrome main frame and the support rail is adjustable. The monochrome feed module is located at the front of the monochrome main frame and is used to receive and convey printing media from the flexographic feed module of the flexographic printing equipment. The monochrome printing module is located above the monochrome main frame and has a plurality of printheads mounted on it. The printheads are located above the monochrome feed module, and the bottom surface of the printheads is parallel to the upper surface of the printing media on the monochrome feed module below them. The distance between the printheads and the printing media is adjustable.

[0010] Preferably, the monochrome printing module includes a monochrome secondary ink cartridge assembly, a monochrome printhead base plate assembly, a monochrome moisture retention assembly, and a monochrome printing main mounting plate. The monochrome printing main mounting plate is mounted on the monochrome main frame, and the relative height between the monochrome printing main mounting plate and the monochrome main frame is adjustable. The monochrome printhead base plate assembly is mounted at the bottom of the monochrome printing main mounting plate, the monochrome secondary ink cartridge assembly is mounted at the top of the monochrome printing main mounting plate and located above the monochrome printhead base plate assembly, and the monochrome moisture retention assembly is mounted at the bottom of the monochrome printing main mounting plate, and the monochrome moisture retention assembly is movable back and forth relative to the monochrome printing main mounting plate.

[0011] Preferably, a monochrome lifting drive device is provided between the monochrome printing main mounting plate and the monochrome main frame. The monochrome lifting drive device includes a monochrome lifting motor fixedly installed on the monochrome main frame. The output end of the monochrome lifting motor faces upward and is fixedly connected to the bottom end of the monochrome lifting screw. A monochrome lifting nut is sleeved on the monochrome lifting screw, and the monochrome lifting nut is fixedly installed on the monochrome printing main mounting plate.

[0012] Preferably, the monochrome printhead base plate assembly includes a monochrome base plate front fixing plate, a monochrome base plate rear fixing plate, a monochrome printhead base plate, a printhead, a monochrome base plate adjustment device, and a monochrome printhead adjustment device. The monochrome base plate front fixing plate is fixedly installed on the bottom front side of the monochrome printing main mounting plate, and the monochrome base plate rear fixing plate is fixedly installed on the bottom rear side of the monochrome printing main mounting plate. The monochrome printhead base plate is overlapped between the monochrome base plate front fixing plate and the monochrome base plate rear fixing plate. The number of printheads is at least two and they are disposed on the monochrome printhead base plate. The monochrome base plate adjustment device is disposed on the front and rear sides of the monochrome printhead base plate and is used to adjust the front and rear position, deflection angle, and tilt angle of the monochrome printhead base plate in the horizontal plane. The monochrome printhead adjustment device is disposed on the front and rear sides of the printhead and is used to adjust the front and rear position and deflection angle of the printhead in the horizontal plane.

[0013] Preferably, the front end of the single-color nozzle base plate is provided with an outwardly protruding single-color base plate boss, and the rear end is provided with an inwardly recessed single-color base plate limiting groove. The single-color base plate adjustment device includes a single-color base plate adjustment block disposed around the single-color base plate boss and a single-color base plate locking screw disposed in the single-color base plate limiting groove. The single-color base plate adjustment block is installed on the front fixing plate of the single-color base plate. Single-color base plate adjustment nails are respectively installed on the left and right sides of the single-color base plate adjustment block. The ends of the single-color base plate adjustment nails abut against the left and right side surfaces of the single-color base plate boss. The front end of the single-color base plate adjustment block is provided with a single-color base plate adjustment nail and a single-color base plate fixing screw. The end of the single-color base plate adjustment nail at the front end of the single-color base plate adjustment block abuts against the front end surface of the single-color base plate boss. The end of the single-color base plate fixing screw protrudes from the single-color base plate adjustment block and is installed in the front end surface of the single-color base plate boss.

[0014] Preferably, the monochrome base plate adjustment device includes monochrome inclined set screws disposed at the four corners of the monochrome nozzle base plate. The monochrome inclined set screws are installed at the four corners of the monochrome nozzle base plate and their lower ends abut against the upper surfaces of the monochrome base plate front fixing plate and the monochrome base plate rear fixing plate.

[0015] Preferably, the monochrome printhead adjustment device includes a monochrome printhead L-shaped adjustment block disposed at one end of the printhead, a monochrome printhead V-shaped adjustment block disposed at the other end of the printhead, a monochrome printhead adjustment screw mounted on the monochrome printhead base plate and abutting against the left side of the inner corner of the monochrome printhead L-shaped adjustment block, two monochrome elastic pins mounted on the monochrome printhead base plate and abutting against the front right sides of the short side of the monochrome printhead L-shaped adjustment block, and a monochrome printhead positioning pin mounted on the monochrome printhead base plate and disposed in the V-groove of the monochrome printhead V-shaped adjustment block. The contact surface between the monochrome printhead adjustment screw and the monochrome printhead L-shaped adjustment block is a conical surface, and the contact surface between the monochrome printhead positioning pin and the monochrome printhead V-shaped adjustment block is a conical surface.

[0016] Preferably, the monochrome moisturizing component includes a monochrome moisturizing mounting frame, a monochrome printhead moisturizing plate is mounted on the upper end of the monochrome moisturizing mounting frame, the monochrome printhead moisturizing plate matches the monochrome printhead base plate, an ink leakage hole is provided at the bottom of the monochrome printhead moisturizing plate, a monochrome scraper cartridge is provided on the front side of the monochrome printhead moisturizing plate, a monochrome scraper ink receiving groove is provided on the monochrome scraper ink receiving groove, a monochrome scraper blade is provided on the front side of the monochrome scraper ink receiving groove, the monochrome scraper blade matches the printhead on the monochrome printhead base plate, an ink outlet hole is provided at the bottom of the monochrome scraper ink receiving groove, and the monochrome printhead moisturizing plate is mounted on the monochrome main frame and can move back and forth relative to the monochrome main frame.

[0017] Preferably, a single-color moisturizing moving drive device is provided between the single-color moisturizing mounting frame and the single-color main frame. The single-color moisturizing moving drive device includes a single-color moisturizing drive motor. A single-color moisturizing gear is fixedly installed at the output end of the single-color moisturizing drive motor. A single-color moisturizing rack that meshes with the single-color moisturizing gear is installed on the single-color main frame. A single-color moisturizing sliding block is fixedly connected to one side of the single-color moisturizing mounting frame. The single-color moisturizing drive motor is fixedly connected to the single-color moisturizing sliding block. A single-color moisturizing guide rail is installed on the single-color main frame. The single-color moisturizing guide rail and the single-color moisturizing sliding block are mutually connected.

[0018] Preferably, the monochrome feeding module includes a monochrome paper feeding front side plate and a monochrome paper feeding rear side plate that are spaced apart and fixedly connected to each other. A plurality of monochrome paper feeding guide rollers are arranged between the monochrome paper feeding front side plate and the monochrome paper feeding rear side plate. A monochrome paper feeding transmission roller is arranged at the right end between the monochrome paper feeding front side plate and the monochrome paper feeding rear side plate. A monochrome paper feeding servo motor is installed at the end of the monochrome paper feeding transmission roller. A monochrome printing UV lamp is arranged above the monochrome feeding module at the right side of the monochrome printing module. A monochrome paper feeding UV lamp is installed at the right end of the monochrome feeding module and is located to the right of the monochrome printing UV lamp.

[0019] The monochrome digital printing device provided by this utility model for integration with flexographic printing equipment has the following beneficial effects:

[0020] 1) It realizes the effective integration of monochrome digital printing device and flexographic printing equipment, thereby realizing one-stop online printing of flexographic printing and digital printing, effectively reducing production costs and improving production efficiency. Moreover, compared with offline printing in the existing technology, the problem of inaccurate color registration is easier to solve.

[0021] 2) The printing module and digital feeding module of the monochrome digital printing device are mounted on the track above the flexographic printing equipment, so that the digital printing device can be adjusted to any position on the track to meet different printing needs;

[0022] 3) For manufacturers with variable data printing needs, they only need to purchase a digital printing device, that is, only a monochrome digital printing device, instead of purchasing a whole digital printer, which saves costs and allows for flexible production transformation and upgrading. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of the monochrome digital printing device body in this utility model;

[0024] Figure 2 This is a structural schematic diagram of the monochrome digital printing device body from another angle in this utility model;

[0025] Figure 3 This is a schematic diagram of the internal structure of the monochrome digital printing device body in this utility model;

[0026] Figure 4 This is a schematic diagram of the monochrome printing module in this utility model;

[0027] Figure 5 This is a schematic diagram of the structure of the monochrome nozzle base plate assembly in this utility model;

[0028] Figure 6 This is a schematic diagram of the single-color lifting drive device in this utility model;

[0029] Figure 7 This is a schematic diagram of the single-color moisturizing component in this utility model;

[0030] Figure 8 This is a schematic diagram of the single-color feeding module in this utility model;

[0031] Figure 9 This is a schematic diagram of the assembly structure of the color digital printing device and the flexographic printing device in an embodiment of this utility model;

[0032] The reference numerals in the attached figures are, in order: 1. Flexographic printing device; 11. Support rail; 2. Color digital printing device; 3. Monochrome digital printing device body; 31. Monochrome printing module; 311. Monochrome secondary ink cartridge assembly; 312. Monochrome printhead base plate assembly; 31211. Monochrome base plate front fixing plate; 31212. Monochrome base plate rear fixing plate; 3122. Monochrome printhead base plate; 31221. Monochrome base plate boss; 31222. Monochrome base plate limiting groove; 3123. Monochrome base plate adjusting block; 3124. Monochrome insert screw; 3125. Monochrome printhead L-shaped adjusting block; 3126. Monochrome printhead adjusting screw; 3127. Monochrome elastic pin; 3128. Monochrome printhead V-shaped adjusting block; 3129. Monochrome printhead positioning pin; 313. Monochrome humidification assembly; 3131. Monochrome printhead humidification plate; 31 32. Monochrome ink guide channel; 3133. Monochrome ink guide channel; 3134. Monochrome waste ink tube; 31351. Monochrome moisturizing drive motor; 31352. Monochrome moisturizing gear; 31353. Monochrome moisturizing rack; 31354. Monochrome moisturizing sliding block; 31355. Monochrome moisturizing guide rail; 314. Monochrome printing main mounting plate; 32. Monochrome main frame; 321. Monochrome main side plate; 322. Monochrome printhead bottom support plate; 323. Monochrome main back plate; 324. Monochrome lifting motor; 325. Monochrome lifting lead screw; 326. Monochrome lifting lead screw nut; 327. Monochrome lead screw nut seat; 33. Monochrome feeding module; 331. Monochrome paper feeding front side plate; 332. Monochrome paper feeding rear side plate; 333. Monochrome paper feeding guide roller; 334. Monochrome paper feeding transmission roller; 335. Monochrome paper feeding UV lamp; 34. Monochrome printing UV lamp. Detailed Implementation

[0033] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0034] In this utility model, the terms "front," "back," "left," and "right" refer to... Figure 1 The directions shown are for reference, with the left side being left and the right side being right.

[0035] Example 1:

[0036] Reference Figure 9As shown, a monochrome digital printing device for integration with flexographic printing equipment is improved in that: the flexographic printing equipment includes a flexographic printing device 1, which includes a support platform, a flexographic feeding module, several flexographic modules, and a support rail 11 disposed above and behind the flexographic modules. The flexographic modules are arranged at intervals on the support platform and are used for flexographic printing on the printing media. The flexographic feeding module is disposed on the support platform and located between the flexographic modules, and is used for guiding and conveying the printing media. The monochrome digital printing device body 3 is disposed on the support rail 11, which can... Figure 9 The color digital printing device 2 in the diagram is replaced by a monochrome digital printing device body 3 as shown in this embodiment. The monochrome digital printing device body 3 is adjustable in position on the support rail 11. The monochrome digital printing device body 3 includes a monochrome printing module 31 and a monochrome feeding module 33. The monochrome feeding module 33 is located above the flexographic module and is positioned corresponding to the flexographic feeding module. It is used to receive and convey the printing medium from the flexographic feeding module. The monochrome printing module 31 is disposed above the digital feeding module and is used to perform variable data digital printing on the printing medium on the monochrome feeding module 33.

[0037] In this embodiment, there are multiple flexographic printing modules, each used to complete different flexographic printing operations. The monochrome printing device body is set on the support rail 11 above the flexographic printing device 1, and the monochrome feeding module 33 of the monochrome printing device body 3 is located above the flexographic feeding module and its position matches that of the flexographic feeding module, so as to receive and transmit the printing medium from the flexographic feeding module. The position of the monochrome printing device body 3 on the support rail 11 is adjustable. When using the integrated equipment, the monochrome printing device body 3 is adjusted to a suitable position on the support rail 11 according to the actual printing needs. The left and right sides of the flexographic printing device 1 are respectively equipped with a feeding roll and a receiving roll. The printing medium is installed on the feeding roll and wound around the flexographic feeding module. The flexographic feeding module is set between the flexographic modules to guide and convey the printing medium. As needed, the printing medium on the flexographic feeding module is pulled out and wound around the monochrome feeding module 33. After being guided by the monochrome feeding module 33, it is wound around the subsequent flexographic feeding module. Thus, on the same equipment, flexographic printing can be completed on the printing medium through the flexographic module, and variable data digital printing can be completed on the printing medium through the monochrome printing device body 3. Furthermore, the monochrome printing device body can be set between any process of flexographic printing according to the printing needs, thereby realizing more diverse combinations of flexographic printing and digital printing. The flexographic printing unit 1 and the monochrome printing unit are integrated into the same device, and the flexographic feeding module and the monochrome feeding module are matched with each other, which makes it easier to register colors between flexographic printing and digital printing.

[0038] Example 2:

[0039] Based on Example 1, referring to Figures 1 to 3 As shown, the digital printing device includes a monochrome digital printing device body 3. The monochrome digital printing device body 3 includes a monochrome printing module 31, a monochrome main frame 32, and a monochrome feed module 33. The monochrome printing module 31 and the monochrome feed module 33 are mounted on the monochrome main frame 32. The bottom of the monochrome main frame 32 is connected to the support rail 11, and the relative position between the monochrome main frame 32 and the support rail 11 is adjustable. The monochrome feed module 33 is located at the front of the monochrome main frame 32 and is used to receive and convey the printing media from the flexographic feed module of the flexographic printing device 1. The monochrome printing module 31 is located above the monochrome main frame 32. A plurality of printheads are mounted on the monochrome printing module 31. The printheads are located above the monochrome feed module 33, and the bottom surface of the printheads is parallel to the upper surface of the printing media on the monochrome feed module 33 below them. The distance between the printheads and the printing media is adjustable.

[0040] In this embodiment, the monochrome digital printing device body 3 integrates a monochrome printing module 31 containing a print head for variable data digital printing, a monochrome main frame 32 connected to and supporting the support rail 11, and a color feed module 23 corresponding to the flexographic feed module. The support rail 11 and the flexographic feed module on the flexographic printing device 1 replace the base and feed module of the traditional digital printer, making the structure of the monochrome digital printing device body 3 more compact. It is not only easy to integrate into the original flexographic printing device, but also has the function of receiving the printing media of the flexographic feed module and realizing variable data digital printing. For manufacturers that already have flexographic printing equipment and have variable data printing needs, they only need to purchase a color digital printing device for simple modification, without having to purchase a whole digital printer, which saves costs and allows for flexible production transformation and upgrading.

[0041] Example 3:

[0042] Based on Example 2, referring to Figure 3 and Figure 4As shown, the monochrome printing module 31 includes a monochrome secondary ink cartridge assembly 311, a monochrome printhead base plate assembly 312, a monochrome moisture retention assembly 313, and a monochrome printing main mounting plate 314. The monochrome printing main mounting plate 314 is mounted on the monochrome main frame 32, and the relative height between the monochrome printing main mounting plate 314 and the monochrome main frame 32 is adjustable. The monochrome printhead base plate assembly 312 is mounted at the bottom of the monochrome printing main mounting plate 314, the monochrome secondary ink cartridge assembly 311 is mounted at the top of the monochrome printing main mounting plate 314 and is located above the monochrome printhead base plate assembly 312, and the monochrome moisture retention assembly 313 is mounted at the bottom of the monochrome printing main mounting plate 314, and the monochrome moisture retention assembly 313 can move back and forth relative to the monochrome printing main mounting plate 314.

[0043] In this embodiment, the monochrome printing module 31 is used to print monochrome variable data. When integrating the monochrome printing device 3 with the flexographic printing device 1, the following requirements must be met: In order for the monochrome printing device 3 to match the printing speed and accuracy of the flexographic printing device 1, multiple high-precision printheads need to be spliced ​​and arranged to achieve good docking; the monochrome printing module 31 needs to be small in size and light in weight to facilitate flexible integration into the original flexographic printing device 1; due to the requirements of printing and printhead moisturizing, the time interval between the printhead of the monochrome printing module 31 and the printing medium needs to be adjustable; due to the fast printing speed, the curing of the printed ink needs to be timely, so a UV lamp also needs to be installed appropriately.

[0044] Therefore, in this embodiment, the monochrome printhead base plate assembly 312 and the monochrome secondary ink cartridge assembly 311 for supplying ink to the printhead are mounted on the monochrome printhead main mounting plate 314, making the single-plate support structure lighter. The monochrome printhead main mounting plate 314 is mounted on the monochrome main frame 32, and the relative height between the two is adjustable, thereby realizing the adjustment of the distance between the printhead and the printing medium, and simultaneously providing space for the monochrome ink-retaining assembly 313 to move back and forth. In use, the relative height between the monochrome printhead main mounting plate 314 and the monochrome main frame 32 is first adjusted to ensure a reasonable distance between the printhead and the printing medium, thereby ensuring print quality. When the printhead needs maintenance after printing, the relative height between the monochrome printhead main mounting plate 314 and the monochrome main frame 32 is adjusted to raise the monochrome printhead main mounting plate 314. Then, the monochrome humidification assembly 313 moves forward to below the monochrome printhead base plate assembly 312 and performs ink scraping on the bottom of the printhead during the backward movement. Then, it moves forward again to below the monochrome printhead base plate assembly 312 and lowers the monochrome printhead main mounting plate 314 so that the monochrome printhead humidification plate 3131 and the printhead on the monochrome printhead base plate 3122 are engaged to perform humidification maintenance on the printhead.

[0045] Furthermore, refer to Figure 6 As shown, a monochrome lifting drive device is provided between the monochrome printing main mounting plate 314 and the monochrome main frame 32. The monochrome lifting drive device includes a monochrome lifting motor 324 fixedly mounted on the monochrome main frame 32. The output end of the monochrome lifting motor 324 faces upward and is fixedly connected to the bottom end of the monochrome lifting screw 325. A monochrome lifting nut 326 is sleeved on the monochrome lifting screw 325. The monochrome lifting nut 326 is fixedly mounted on the monochrome printing main mounting plate 314.

[0046] In this embodiment, the height of the monochrome printing main mounting plate 314 is adjusted by the monochrome lifting drive device, which then starts the monochrome lifting motor 324. The monochrome lifting motor 324 rotates, which drives the monochrome lifting screw 325 to rotate, thereby driving the monochrome lifting screw nut 326 to move up or down along the monochrome lifting screw 325, and thus driving the monochrome printing main mounting plate 325 to move up or down.

[0047] Furthermore, a monochrome filament holder 327 is fixedly installed on the monochrome printing main mounting plate 314, and the monochrome lifting filament 326 is installed inside the monochrome filament holder 327.

[0048] Example 4:

[0049] Based on Example 3, referring to Figure 4 and Figure 5 As shown, the monochrome printhead base plate assembly 312 includes a monochrome base plate front fixing plate 31211, a monochrome base plate rear fixing plate 31212, a monochrome printhead base plate 3122, a printhead, a monochrome base plate adjustment device, and a monochrome printhead adjustment device. The monochrome base plate front fixing plate 31211 is fixedly installed on the bottom front side of the monochrome printing main mounting plate 314, the monochrome base plate rear fixing plate 31212 is fixedly installed on the bottom rear side of the monochrome printing main mounting plate 314, and the monochrome printhead base plate 3122 is overlapped and installed on the monochrome base plate. Between the front fixing plate 31211 and the monochrome base plate rear fixing plate 31212, the number of printing nozzles is at least two and is disposed on the monochrome printhead base plate 3122. The monochrome base plate adjustment device is disposed on the front and rear sides of the monochrome printhead base plate 3122 and is used to adjust the front and rear position, deflection angle and tilt angle of the monochrome printhead base plate 3122 in the horizontal plane. The monochrome printhead adjustment device is disposed on the front and rear sides of the printing nozzle and is used to adjust the front and rear position and deflection angle of the printing nozzle in the horizontal plane.

[0050] In this embodiment, the monochrome base plate adjustment device and the monochrome printhead adjustment device are both designed to adjust the printhead so that the bottom surface of the printhead is parallel to the upper surface of the printing medium, and the long side of the printhead is parallel to the side of the printing medium, thus avoiding skewing of the printed pattern and avoiding changes in the resolution of the printed pattern, thereby ensuring print quality.

[0051] Furthermore, the front end of the single-color nozzle base plate 3122 is provided with an outwardly protruding single-color base plate boss 31221, and the rear end is provided with an inwardly recessed single-color base plate limiting groove 31222. The single-color base plate adjustment device includes a single-color base plate adjustment block 3123 disposed around the single-color base plate boss 31221 and a single-color plug screw 3124 disposed in the single-color base plate limiting groove 31222. The single-color base plate adjustment block 3123 is installed on the front fixing plate 31211 of the single-color base plate. The left and right sides of the single-color base plate adjustment block 3123 are... Each is equipped with a single-color base plate adjusting nail. The ends of the single-color base plate adjusting nails abut against the left and right side surfaces of the single-color base plate boss 31221. The front end of the single-color base plate adjusting block 3123 is equipped with a single-color base plate adjusting nail and a single-color base plate fixing screw. The end of the single-color base plate adjusting nail at the front end of the single-color base plate adjusting block 3123 abuts against the front end surface of the single-color base plate boss 31221. The end of the single-color base plate fixing screw protrudes from the single-color base plate adjusting block 3123 and is installed in the front end surface of the single-color base plate boss 31221.

[0052] In this embodiment, the front-to-back position and deflection angle of the monochrome nozzle base plate 3122 are adjusted by a monochrome base plate adjustment device. When adjusting the front-to-back position of the monochrome nozzle base plate 3122, the length of the monochrome base plate adjusting pin extending beyond the monochrome base plate adjusting block 3123 can be adjusted by screwing the monochrome base plate adjusting pin at the front end of the monochrome base plate adjusting block 3123, thereby moving the monochrome nozzle base plate 3122 forward or backward. The monochrome base plate limiting groove 31222 at the rear end of the monochrome nozzle base plate 3122, in conjunction with the monochrome base plate locking screw 3124, serves to limit and guide the front-to-back movement of the monochrome nozzle base plate 3122. After adjustment, the position of the monochrome base plate 3122 can be fixed by screwing the monochrome base plate fixing screw, thereby fixing the position of the monochrome nozzle base plate 3122. When adjusting the deflection angle of the single-color printhead base plate 3122, the length of the single-color base plate adjusting pins extending from the left and right sides of the single-color base plate adjusting block 3123 can be adjusted, thereby pushing the single-color base plate boss 31221 to the left or right. This causes the single-color printhead base plate 3122 to rotate around the single-color plug screw 3124, thus adjusting the deflection angle of the single-color printhead base plate 3122. After adjustment, the position of the single-color base plate adjusting block 3123 and the single-color base plate boss 31221 can be fixed by tightening the single-color base plate fixing screw, thereby fixing the position of the single-color printhead base plate 3122. The hole on the single-color base plate adjusting block 3123 for accommodating the single-color base plate fixing screw is an oblong hole, thus providing space for the single-color base plate fixing screw to move.

[0053] Furthermore, the monochrome base plate adjustment device includes monochrome inclined set screws disposed at the four corners of the monochrome nozzle base plate 3122. The monochrome inclined set screws are installed at the four corners of the monochrome nozzle base plate 3122 and their lower ends abut against the upper surfaces of the monochrome base plate front fixing plate 31211 and the monochrome base plate rear fixing plate 31212.

[0054] In this embodiment, the tilt angle of the monochrome printhead base plate 3122 relative to the horizontal plane is adjusted by a monochrome base plate adjustment device. During adjustment, the monochrome tilting set screws at the four corners of the monochrome printhead base plate 3122 are turned to adjust the length of the monochrome tilting set screws extending beyond the lower surface of the monochrome printhead base plate 3122, thereby adjusting the distance between the four corners of the monochrome printhead base plate 3122 relative to the same horizontal plane, and thus adjusting the tilt angle of the monochrome printhead base plate 3122 relative to the horizontal plane.

[0055] Furthermore, the monochrome printhead adjustment device includes a monochrome printhead L-shaped adjustment block 3125 disposed at one end of the printhead, a monochrome printhead V-shaped adjustment block 3128 disposed at the other end of the printhead, a monochrome printhead adjustment screw 3126 mounted on the monochrome printhead base plate 3122 and abutting against the left side of the inner corner of the monochrome printhead L-shaped adjustment block, two monochrome elastic pins 3217 mounted on the monochrome printhead base plate 3122 and abutting against the front right sides of the short side of the monochrome printhead L-shaped adjustment block 3125, and a monochrome printhead positioning pin 3129 mounted on the monochrome printhead base plate 3122 and disposed in the V-groove of the monochrome printhead V-shaped adjustment block 3128. The contact surface between the monochrome printhead adjustment screw 3126 and the monochrome printhead L-shaped adjustment block 3125 is a conical surface, and the contact surface between the monochrome printhead positioning pin 3129 and the monochrome printhead V-shaped adjustment block 3128 is a conical surface.

[0056] In this embodiment, the front-to-back position and deflection angle of the print head are adjusted by a monochrome print head adjustment device. When adjusting the front-to-back position of the print head, the monochrome print head positioning pin 3129 on the rear side of the print head can be screwed to move it upward or downward. As a result, the print head moves forward or backward due to the pressure between the conical surface of the monochrome print head positioning pin 3129 and the monochrome print head V-shaped adjustment block 3128. When adjusting the deflection angle of the printhead, the monochrome printhead adjusting screw 3126 is turned down or up. Since the contact surface between the monochrome printhead adjusting screw 3126 and the monochrome printhead L-shaped adjusting block 3125 is a conical surface, when the monochrome printhead adjusting screw 3126 moves down, it exerts a squeezing force on the monochrome printhead L-shaped adjusting block 3125, causing the monochrome printhead L-shaped adjusting block to move to the right. This causes the printhead to rotate counterclockwise around the monochrome printhead positioning pin 3129. At this time, the monochrome elastic pins 3127 at the front end and right side of the monochrome printhead L-shaped adjusting block 3125 always keep the monochrome printhead L-shaped adjusting block pressed against it. When the monochrome printhead adjusting screw 3126 moves up, under the pressing action of the monochrome elastic pin 3127, the monochrome printhead L-shaped adjusting block 3125 moves to the left, causing the printhead to rotate clockwise around the monochrome elastic pin 3127.

[0057] Furthermore, the monochrome main frame 32 includes a monochrome machine head bottom support plate 322, a monochrome main side plate vertically fixed to the right end of the monochrome machine head bottom support plate 322, and a monochrome main back plate 323 vertically fixed to the left end of the monochrome machine head bottom support plate 322. The monochrome machine head bottom support plate 322 is connected to the support rail 11, and the left and right positions of the monochrome machine head bottom support plate 322 on the support rail 11 are adjustable.

[0058] Furthermore, the monochrome lifting motor 324 is fixedly installed on the monochrome main back plate 323.

[0059] Example 5:

[0060] Based on Example 4, referring to Figure 7 As shown, the monochrome humidification component 313 includes a monochrome humidification mounting frame. A monochrome printhead humidification plate 3131 is mounted on the upper end of the monochrome humidification mounting frame. The monochrome printhead humidification plate 3131 matches the monochrome printhead base plate 3122. An ink leakage hole is provided at the bottom of the monochrome printhead humidification plate 3131. A monochrome scraper cartridge is provided on the front side of the monochrome printhead humidification plate 3131. A monochrome scraper ink receiving groove is provided on the monochrome scraper ink receiving groove. A monochrome scraper blade is provided on the front side of the monochrome scraper ink receiving groove. The monochrome scraper blade matches the printhead on the monochrome printhead base plate 3122. An ink outlet hole is provided at the bottom of the monochrome scraper ink receiving groove. The monochrome printhead humidification plate 3131 is mounted on the monochrome main frame 32 and can move back and forth relative to the monochrome main frame 32.

[0061] In this embodiment, the monochrome printhead base plate assembly 312 is installed at the front end of the monochrome main frame 32. During printing, the monochrome moisturizing assembly 313 is placed at the rear of the monochrome main frame 32. When the printhead needs to be cleaned or moisturized after the printing operation is completed, the monochrome printhead base plate assembly 312 is driven to move upward by the monochrome lifting drive device to give the monochrome moisturizing assembly 313 space to move back and forth. The monochrome moisturizing assembly 313 moves forward to the bottom of the monochrome printhead base plate assembly 312, so that the monochrome printhead moisturizing plate 3131 and the part on the monochrome printhead base plate 3122 where the printhead is installed are engaged with each other. If necessary, the height of the monochrome printhead base plate assembly 312 can be adjusted again by the monochrome lifting drive device. The residual ink in the printhead is discharged into the monochrome printhead moisturizing plate 3131 by passing cleaning fluid or positive pressure gas in the ink path, and discharged from the ink leakage hole. For residual ink droplets on the bottom surface of the printhead, the monochrome humidification component 313 can be moved below the monochrome printhead base plate assembly 312, and the monochrome scraper blade can be brought into contact with the bottom surface of the printhead on the monochrome printhead base plate 3122. Then, the monochrome humidification component 313 moves backward so that the monochrome scraper blade can scrape off the residual ink droplets on the bottom surface of the printhead. The scraped-off ink droplets fall into the monochrome scraper ink collection trough and are discharged from the ink outlet. When the printing job stops, in order to prevent the printhead nozzles from drying out and clogging, the monochrome printhead humidification plate 3131 and the monochrome printhead base plate 3122 can be interlocked to moisturize the printhead. At this time, a moisturizing cotton soaked in cleaning solution can be placed inside the monochrome printhead humidification plate 3131.

[0062] Furthermore, a monochrome guide groove 3132 is provided below the monochrome moisturizing mounting frame. The size of the monochrome guide groove 3132 at least covers the positions of the ink leakage hole and the ink outlet hole. A monochrome ink guide groove 3133 is provided below the monochrome guide groove 3132 and communicates with it. A monochrome waste ink tank 3134 is provided below the monochrome ink guide groove 3133 and communicates with it.

[0063] Furthermore, a single-color moisturizing moving drive device is provided between the single-color moisturizing mounting frame and the single-color main frame 32. The single-color moisturizing moving drive device includes a single-color moisturizing drive motor 31351. A single-color moisturizing gear 31352 is fixedly installed at the output end of the single-color moisturizing drive motor 31351. A single-color moisturizing rack 31353 that meshes with the single-color moisturizing gear 31352 is installed on the single-color main frame 32. A single-color moisturizing sliding block 31354 is fixedly connected to one side of the single-color moisturizing mounting frame. The single-color moisturizing drive motor 31351 is fixedly connected to the single-color moisturizing sliding block 31354. A single-color moisturizing guide rail 31355 is installed on the single-color main frame 32. The single-color moisturizing guide rail 31355 and the single-color moisturizing sliding block 31354 are mutually connected.

[0064] In this embodiment, when the monochrome moisturizing component 313 moves back and forth, the monochrome moisturizing drive motor 31351 rotates, driving the monochrome moisturizing gear 31352 to rotate. Due to the meshing connection between the monochrome moisturizing gear 31352 and the monochrome moisturizing rack 31353, the monochrome moisturizing gear 31353 and the monochrome moisturizing drive motor 31351 move back and forth, thereby driving the monochrome moisturizing mounting frame to move back and forth through the monochrome moisturizing sliding block 31354. The cooperative connection between the monochrome moisturizing guide rail 31355 and the monochrome moisturizing sliding block 31354 serves two purposes: firstly, it makes the connection between the monochrome moisturizing mounting frame and the monochrome main frame 32 more stable; secondly, it makes the back and forth movement of the monochrome moisturizing component 313 more stable and smooth.

[0065] Furthermore, the monochrome moisturizing drive motor 31351, monochrome moisturizing rack 31353, and monochrome moisturizing guide rail 31355 are fixedly installed on the right side of the monochrome main back plate 323.

[0066] Example 6:

[0067] Based on Example 1, referring to Figure 8As shown, the monochrome feeding module 33 includes a monochrome paper feeding front side plate 331 and a monochrome paper feeding rear side plate 332 that are spaced apart and fixedly connected to each other. A plurality of monochrome paper feeding guide rollers 333 are arranged between the monochrome paper feeding front side plate 331 and the monochrome paper feeding rear side plate 332. A monochrome paper feeding transmission roller 334 is arranged at the right end between the monochrome paper feeding front side plate 331 and the monochrome paper feeding rear side plate 332. A monochrome paper feeding servo motor is installed at the end of the monochrome paper feeding transmission roller 334. A monochrome printing UV lamp 34 is arranged above the monochrome feeding module 33 on the right side of the monochrome printing module 31. A monochrome paper feeding UV lamp 335 is installed at the right end of the monochrome feeding module 33, and the monochrome paper feeding UV lamp 335 is located to the right of the monochrome printing UV lamp 34.

[0068] In this embodiment, the monochrome paper feed guide roller 333 is used to guide the printing medium, and the monochrome paper feed transmission roller 334 is used to guide and convey the printing medium. When the tension and feed speed of the printing medium in the flexographic printing device 1 are relatively stable, and no additional servo motor is needed to control the conveying speed of the printing medium when the monochrome digital printing device body 3 is docked with the flexographic printing device 1, the monochrome paper feed transmission roller 334 and its end monochrome paper feed servo motor can be removed, further saving costs and reducing weight. When an additional servo motor is needed to control the conveying speed of the printing medium when the flexographic printing device 1 is docked with the monochrome digital printing device body 3, the monochrome paper feed transmission roller 334 and the monochrome paper feed servo motor can be installed between the monochrome paper feed front side plate 331 and the monochrome paper feed rear side plate 332, thereby making the operation of the monochrome digital printing device body 3 more stable when integrated with the flexographic printing device 1, thus ensuring print quality. The monochrome printing UV lamp 34 is used to pre-cur the ink that has just passed through the print head in a timely manner, avoiding excessive diffusion of ink droplets, thereby controlling the diameter of the ink droplets as soon as possible, and thus completing higher quality printing. The monochrome paper feed UV lamp 335 is used for the final curing of ink on the printing medium at the end of the monochrome feed module 33 after variable data digital printing is completed.

[0069] It should be noted that the above detailed descriptions are exemplary and intended to provide further explanation of this application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0070] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments described in this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0071] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such terms can be used interchangeably where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0072] Furthermore, the terms “comprising” and “having”, and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such process, method, product, or apparatus.

[0073] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways, such as rotated 90 degrees or in other orientations, and the spatial relative descriptions used herein will be interpreted accordingly.

[0074] In the detailed description above, reference has been made to the accompanying drawings, which form part of this document. In the drawings, similar symbols typically identify similar parts unless the context otherwise indicates otherwise. The illustrated embodiments described in the detailed specification, drawings, and claims are not intended to be limiting. Other embodiments may be used and other changes may be made without departing from the spirit or scope of the subject matter presented herein.

[0075] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A monochrome digital printing device for integration with a flexographic printing apparatus, characterized by: The single-color digital printing device body (3) comprises a single-color printing module (31), a single-color main frame (32) and a single-color feeding module (33), the single-color printing module (31) and the single-color feeding module (33) are installed on the single-color main frame (32), the bottom of the single-color main frame (32) is connected with a support rail (11) on the flexographic printing device (1), and the relative position between the single-color main frame (32) and the support rail (11) is adjustable; the single-color feeding module (33) is arranged at the front of the single-color main frame (32) and is used for receiving and conveying the printing medium from the flexographic printing device (1); the single-color printing module (31) is arranged above the single-color main frame (32), a plurality of printing nozzles are installed on the single-color printing module (31), the printing nozzles are located above the single-color feeding module (33), the bottom surface of the printing nozzles is parallel to the upper surface of the printing medium on the single-color feeding module (33) below, and the distance between the printing nozzles and the printing medium is adjustable.

2. A monochrome digital printing device for integration with a flexographic printing apparatus according to claim 1, characterized in that: The single-color printing module (31) comprises a single-color secondary ink cartridge assembly (311), a single-color nozzle bottom plate assembly (312), a single-color moisturizing assembly (313) and a single-color printing main mounting plate (314), the single-color printing main mounting plate (314) is installed on the single-color main frame (32), and the relative height between the single-color printing main mounting plate (314) and the single-color main frame (32) is adjustable; the single-color nozzle bottom plate assembly (312) is installed at the bottom end of the single-color printing main mounting plate (314), the single-color secondary ink cartridge assembly (311) is installed at the upper end of the single-color printing main mounting plate (314) and is located above the single-color nozzle bottom plate assembly (312), and the single-color moisturizing assembly (313) is installed at the bottom of the single-color printing main mounting plate (314) and can move forward and backward relative to the single-color printing main mounting plate (314).

3. A monochrome digital printing device for integration with a flexographic printing apparatus according to claim 2, characterized in that: A single-color lifting driving device is arranged between the single-color printing main mounting plate (314) and the single-color main frame (32), the single-color lifting driving device comprises a single-color lifting motor (324) fixedly installed on the single-color main frame (32), the output end of the single-color lifting motor (324) faces upwards and is fixedly connected with the bottom end of a single-color lifting lead screw (325), a single-color lifting lead nut (326) is sleeved on the single-color lifting lead screw (325), and the single-color lifting lead nut (326) is fixedly installed on the single-color printing main mounting plate (314).

4. A monochrome digital printing device for integration with a flexographic printing apparatus according to claim 2, characterized in that: The monochrome nozzle base plate assembly (312) comprises a monochrome base plate front fixed plate (31211), a monochrome base plate rear fixed plate (31212), a monochrome nozzle base plate (3122), a print nozzle, a monochrome base plate adjusting device and a monochrome nozzle adjusting device, the monochrome base plate front fixed plate (31211) is fixedly installed on the bottom end front side of the monochrome print main mounting plate (314), the monochrome base plate rear fixed plate (31212) is fixedly installed on the bottom end rear side of the monochrome print main mounting plate (314), the monochrome nozzle base plate (3122) is lap jointly installed between the monochrome base plate front fixed plate (31211) and the monochrome base plate rear fixed plate (31212), the number of print nozzles is at least two and is arranged on the monochrome nozzle base plate (3122), the monochrome base plate adjusting device is arranged on the front and rear sides of the monochrome nozzle base plate (3122) and is used for adjusting the front and rear positions, deflection angles and inclination angles relative to the horizontal plane of the monochrome nozzle base plate (3122) in the horizontal plane, and the monochrome nozzle adjusting device is arranged on the front and rear sides of the print nozzle and is used for adjusting the front and rear positions and deflection angles of the print nozzle in the horizontal plane.

5. A monochrome digital printing device for integration with a flexographic printing apparatus according to claim 4, characterized in that: The front end of the monochrome nozzle base plate (3122) is provided with a monochrome base plate boss (31221) protruding outward, and the rear end is provided with a monochrome base plate limiting groove (31222) recessed inward, the monochrome base plate adjusting device comprises a monochrome base plate adjusting block (3123) arranged on the periphery of the monochrome base plate boss (31221) and a monochrome plug screw (3124) arranged in the monochrome base plate limiting groove (31222), the monochrome base plate adjusting block (3123) is installed on the monochrome base plate front fixed plate (31211), the left and right sides of the monochrome base plate adjusting block (3123) are respectively provided with monochrome base plate adjusting nails, the ends of the monochrome base plate adjusting nails are respectively abutted on the left and right side surfaces of the monochrome base plate boss (31221), the front end of the monochrome base plate adjusting block (3123) is provided with a monochrome base plate adjusting nail and a monochrome base plate fixing screw, the end of the monochrome base plate adjusting nail of the front end of the monochrome base plate adjusting block (3123) is abutted on the front end surface of the monochrome base plate boss (31221), and the end of the monochrome base plate fixing screw penetrates out of the monochrome base plate adjusting block (3123) and is installed in the front end surface of the monochrome base plate boss (31221).

6. A monochrome digital printing device for integration with a flexographic printing apparatus according to claim 4, characterized in that: The monochrome base plate adjusting device comprises monochrome inclined top screws arranged at four corner portions of the monochrome nozzle base plate (3122), the monochrome inclined top screws are installed at the four corner portions of the monochrome nozzle base plate (3122) and abut against the upper surfaces of the monochrome base plate front fixed plate (31211) and the monochrome base plate rear fixed plate (31212).

7. A monochrome digital printing device for integration with a flexographic printing apparatus according to claim 4, characterized in that: The monochrome inkjet head adjusting device comprises a monochrome inkjet head L-shaped adjusting block (3125) arranged at one end of the printing inkjet head, a monochrome inkjet head V-shaped adjusting block (3128) arranged at the other end of the printing inkjet head, a monochrome inkjet head adjusting screw (3126) installed on a monochrome inkjet head bottom plate (3122) and abutting against the left side surface of the inner corner of the monochrome inkjet head L-shaped adjusting block, two monochrome elastic column pins (3217) installed on the monochrome inkjet head bottom plate (3122) and abutting against the front right two side surfaces of the short side of the monochrome inkjet head L-shaped adjusting block (3125) respectively, and a monochrome inkjet head positioning pin (3129) installed on the monochrome inkjet head bottom plate (3122) and arranged in the V-shaped groove of the monochrome inkjet head V-shaped adjusting block (3128). The contact surface between the monochrome inkjet head adjusting screw (3126) and the monochrome inkjet head L-shaped adjusting block (3125) is a conical surface, and the contact surface between the monochrome inkjet head positioning pin (3129) and the monochrome inkjet head V-shaped adjusting block (3128) is also a conical surface.

8. A monochrome digital printing device for integration with a flexographic printing apparatus according to claim 4, characterized in that: The monochrome inkjet head moisturizing assembly (313) comprises a monochrome inkjet head moisturizing installation frame, the upper end of the monochrome inkjet head moisturizing installation frame is provided with a monochrome inkjet head moisturizing plate (3131), the monochrome inkjet head moisturizing plate (3131) is matched with the monochrome inkjet head bottom plate (3122), the bottom of the monochrome inkjet head moisturizing plate (3131) is provided with an ink leakage hole, the front side of the monochrome inkjet head moisturizing plate (3131) is provided with a monochrome ink scraping box, the monochrome ink scraping box is provided with a monochrome ink scraping ink receiving groove, the front side of the monochrome ink scraping ink receiving groove is provided with a monochrome scraping piece, the monochrome scraping piece is matched with the printing inkjet head on the monochrome inkjet head bottom plate (3122), the bottom of the monochrome ink scraping ink receiving groove is provided with an ink outlet hole, and the monochrome inkjet head moisturizing plate (3131) is installed on the monochrome main frame (32) and can move back and forth relative to the monochrome main frame (32).

9. A monochrome digital printing device for integration with a flexographic printing apparatus according to claim 8, characterized in that: A monochrome inkjet head moisturizing moving driving device is arranged between the monochrome inkjet head moisturizing installation frame and the monochrome main frame (32), the monochrome inkjet head moisturizing moving driving device comprises a monochrome inkjet head moisturizing driving motor (31351), the output end of the monochrome inkjet head moisturizing driving motor (31351) is fixedly provided with a monochrome inkjet head moisturizing gear (31352), the monochrome main frame (32) is provided with a monochrome inkjet head moisturizing rack (31353) which is in meshing connection with the monochrome inkjet head moisturizing gear (31352), one side of the monochrome inkjet head moisturizing installation frame is fixedly connected with a monochrome inkjet head moisturizing sliding block (31354), the monochrome inkjet head moisturizing driving motor (31351) is fixedly connected with the monochrome inkjet head moisturizing sliding block (31354), and the monochrome main frame (32) is provided with a monochrome inkjet head moisturizing guide rail (31355) which is in matching connection with the monochrome inkjet head moisturizing sliding block (31354).

10. A monochrome digital printing device for integration with a flexographic printing apparatus according to claim 1, characterized in that: The monochrome paper feeding module (33) comprises a front monochrome paper feeding side plate (331) and a rear monochrome paper feeding side plate (332) which are arranged at intervals and are fixedly connected with each other, a plurality of monochrome paper feeding guide rollers (333) are arranged between the front monochrome paper feeding side plate (331) and the rear monochrome paper feeding side plate (332), a monochrome paper feeding transmission roller (334) is arranged at the right end between the front monochrome paper feeding side plate (331) and the rear monochrome paper feeding side plate (332), a monochrome paper feeding servo motor is mounted at the end of the monochrome paper feeding transmission roller (334), a monochrome printing UV lamp (34) is arranged above the monochrome paper feeding module (33) and is located at the right side of the monochrome printing module (31), a monochrome paper feeding UV lamp (335) is mounted at the right end of the monochrome paper feeding module (33), and the monochrome paper feeding UV lamp (335) is located at the right side of the monochrome printing UV lamp (34).

Images