Flexographic printing and digital printing integrated apparatus

Abstract

The present invention relates to a flexographic printing and digital printing integrated apparatus, comprising a flexographic printing device and a digital printing device. The flexographic printing device comprises a support platform, flexographic-printing material feeding modules, a plurality of flexographic printing modules, and support rails provided above the rear of the flexographic printing modules, the flexographic printing modules being spaced apart from each other in the left-right direction on the support platform, and the flexographic-printing material feeding modules being arranged on the support platform and located between the flexographic printing modules. The digital printing device is arranged on the support rails, the position of the digital printing device on the support rails being adjustable; the digital printing device comprises printing modules and digital material feeding modules, the digital material feeding modules being located above the flexographic printing modules and corresponding to the flexographic-printing material feeding modules in position, and the printing modules being arranged above the digital material feeding modules and used for performing variable-data digital printing. The present invention realizes the effective integration of the digital printing device and the flexographic printing device, thereby realizing one-stop online printing of flexographic printing and digital printing, effectively reducing production costs, improving production efficiency, and saving upgrade and transformation costs.

Description

An integrated flexographic printing and digital printing device

[0001] Cross-reference to related applications

[0002] This application claims priority to Chinese Patent Application No. 2025101762621, filed on February 18, 2025, entitled “An Integrated Flexographic Printing and Digital Printing Device”, the entire contents of which are incorporated herein by reference. Technical Field

[0003] This invention relates to the field of printing equipment technology, and more specifically to an integrated flexographic printing and digital printing device. Background Technology

[0004] 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.

[0005] 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.

[0006] 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:

[0007] ① Traditional flexographic printing manufacturers need to purchase digital printers to print variable data sections, but digital printers are expensive, thus increasing production costs.

[0008] 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.

[0009] 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. Summary of the Invention

[0010] The present invention aims to provide an integrated flexographic printing and digital printing device 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.

[0011] An integrated flexographic printing and digital printing device includes a flexographic printing unit and a digital printing unit. The flexographic printing unit includes a support platform, a flexographic feed module, several flexographic modules, and a support rail 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 printing media. The flexographic feed module is disposed on the support platform and located between the flexographic modules, and is used to guide and convey the printing media. The digital printing unit is disposed on the support rail, and its position on the support rail is adjustable. The digital printing unit includes a printing module and a digital feed module. The digital feed module is located above the flexographic modules and its position corresponds to the flexographic feed modules. It is used to receive and convey the printing media from the flexographic feed modules. The printing module is disposed above the digital feed modules and is used to perform variable data digital printing on the printing media on the digital feed modules.

[0012] In this invention, there are multiple flexographic printing modules, each used to complete different flexographic printing operations. The digital printing device is set on a support rail above the flexographic printing device, and the digital feed module of the digital printing device is located above the flexographic feed module and its position matches that of the flexographic feed module, so as to receive and transmit the printing medium from the flexographic feed module. The position of the digital printing device on the support rail is adjustable. When using the integrated equipment, the digital printing device is adjusted to a suitable position on the support rail according to actual printing needs. The left and right sides of the flexographic printing unit are respectively equipped with a feed roll and a take-up roll. The printing media is mounted on the feed roll and wound around the flexographic feeding module, which is positioned between the flexographic modules to guide and transport the printing media. As needed, the printing media is pulled out from the flexographic feeding module and wound around the digital feeding module. After being guided by the digital feeding module, it is then wound around the subsequent flexographic feeding module. Thus, on the same equipment, both flexographic printing and variable data digital printing can be completed on the printing media using the flexographic modules and the digital printing device. Furthermore, the digital printing device can be placed between any steps of the flexographic printing process, enabling more diverse combinations of flexographic and digital printing. The integration of the flexographic printing device and the digital printing device into the same equipment, with the flexographic feeding module and the digital feeding module matching each other, facilitates color registration between flexographic and digital printing.

[0013] The flexographic printing and digital printing integrated device provided by this invention has the following beneficial effects:

[0014] 1) It realizes the effective integration of digital printing devices 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.

[0015] 2) The printing module and digital feeding module of the 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;

[0016] 3) For manufacturers with variable data printing needs, they only need to purchase digital printing equipment, that is, only the printing module and digital material feeding module, instead of purchasing a whole digital printer, which saves costs and allows for flexible production transformation and upgrading. Attached Figure Description

[0017] Figure 1 is a schematic diagram of the structure of the present invention;

[0018] Figure 2 is a schematic diagram of the color digital printing device in this invention;

[0019] Figure 3 is a structural schematic diagram of the color digital printing device of the present invention from another angle;

[0020] Figure 4 is a schematic diagram of the structure of the color lifting drive device in this invention;

[0021] Figure 5 is a schematic diagram of the structure of the colored lifting frame in this invention;

[0022] Figure 6 is a schematic diagram of the installation structure of the color nozzle base plate assembly in the color hoisting base frame in this invention;

[0023] Figure 7 is a schematic diagram of the structure of the color nozzle base plate assembly in this invention;

[0024] Figure 8 is a schematic diagram of the color feeding module in this invention;

[0025] Figure 9 is a schematic diagram of the structure of the colored moisturizing component in this invention;

[0026] Figure 10 is a schematic diagram of the structure of the color moisturizing moving drive device in this invention;

[0027] Figure 11 is a schematic diagram of the monochrome digital printing device of the present invention;

[0028] Figure 12 is a structural schematic diagram of the monochrome digital printing device of the present invention from another angle;

[0029] Figure 13 is a schematic diagram of the internal structure of the monochrome digital printing device in this invention;

[0030] Figure 14 is a schematic diagram of the monochrome printing module in this invention;

[0031] Figure 15 is a schematic diagram of the structure of the monochrome nozzle base plate assembly in this invention;

[0032] Figure 16 is a schematic diagram of the single-color lifting drive device in this invention;

[0033] Figure 17 is a schematic diagram of the structure of the monochrome moisturizing component in this invention;

[0034] Figure 18 is a schematic diagram of the single-color feeding module in this invention;

[0035] The reference numerals in the attached figures are, in order: 1. Flexographic printing device; 11. Support rail; 2. Color digital printing device; 21. Color printing module; 211. Color main frame; 2111. Color main side plate; 2112. Color main mounting plate; 2113. Color lifting motor; 2114. Color lifting screw; 2115. Color lifting screw nut; 2116. Color lifting screw nut seat; 212. Color lifting frame; 2121. Color lifting side plate; 2122. Color lifting front beam; 2123. Color lifting rear beam; 2124. Color lifting strip; 2125. Color base plate adjusting block; 2126. Color base plate positioning pin; 213. Color lifting frame; 2131. Color lifting back plate; 2132. Color lifting... Side panel lifter, 2133, Color lifting and hoisting hole, 2134, Color hoisting screw, 2135, Color hoisting spring, 214, Color secondary ink cartridge assembly, 215, Color printhead base plate assembly, 2151, Color base plate, 2152, Color base plate boss, 2153, Color printhead L-shaped adjusting block, 2154, Color printhead adjusting screw, 2155, Color elastic pin, 2156, Color V-shaped adjusting block, 2157, Color base plate UV lamp, 216, Color humidification assembly, 2161, Color humidification mounting frame, 2162, Color printhead humidification plate, 2163, Color doctor blade ink cartridge, 21631, Color doctor blade ink collection tray, 2164, Color doctor blade, 21651, Color humidification drive motor, 2165 2. Colored moisturizing active belt; 21653. Colored moisturizing first driven pulley; 21654. Colored moisturizing transmission belt; 21655. Colored moisturizing second driven pulley; 21656. Colored moisturizing connecting slider; 21657. Colored moisturizing belt pressure plate; 21658. Colored moisturizing guide rail; 22. Colored bottom support frame; 221. Colored bottom frame side plate; 222. Colored machine head bottom support plate; 23. Colored material feeding module; 231. Colored paper feeding platform assembly; 232. Colored paper feeding left frame; 233. Colored paper feeding left transmission roller; 234. Colored paper feeding left servo motor; 235. Colored paper feeding right frame; 236. Colored paper feeding right transmission roller; 237. Colored paper feeding right servo motor; 238. Colored paper feeding U... V-Lamp, 3. Monochrome Digital Printing Device, 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 Slot, 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, 3132. Monochrome Flow Guide Slot3133. Single-color ink guide groove; 3134. Single-color waste ink tube; 31351. Single-color moisturizing drive motor; 31352. Single-color moisturizing gear; 31353. Single-color moisturizing rack; 31354. Single-color moisturizing sliding block; 31355. Single-color moisturizing guide rail; 314. Single-color printing main mounting plate; 32. Single-color main frame; 321. Single-color main side plate; 322. Single-color printhead bottom support plate; 323. Single-color main back plate; 324. Single-color lifting motor; 325. Single-color lifting screw; 326. Single-color lifting screw nut; 327. Single-color screw nut seat; 33. Single-color feeding module; 331. Single-color paper feeding front side plate; 332. Single-color paper feeding rear side plate; 333. Single-color paper feeding guide roller; 334. Single-color paper feeding transmission roller; 335. Single-color paper feeding UV lamp; 34. Single-color printing UV lamp. Detailed Implementation

[0036] 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.

[0037] In this invention, the front, back, left, and right directions refer to the directions shown in Figure 1, with the left side being left and the right side being right.

[0038] Example 1:

[0039] Referring to Figure 1, an integrated flexographic printing and digital printing device is improved in that it includes a flexographic printing unit 1 and a digital printing unit. The flexographic printing unit 1 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 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 digital printing unit is disposed on the support rail 11, and its position on the support rail 11 is adjustable. The digital printing unit includes a printing module and a digital feeding module. The digital feeding module is located above the flexographic modules and its position corresponds to the flexographic feeding modules. It is used to receive and convey the printing media from the flexographic feeding modules. The printing module is disposed above the digital feeding modules and is used for variable data digital printing on the printing media on the digital feeding modules.

[0040] In this embodiment, there are multiple flexographic printing modules, each used to complete different flexographic printing operations. The digital printing device is set on the support rail 11 above the flexographic printing device 1, and the digital feed module of the digital printing device is located above the flexographic feed module and its position matches that of the flexographic feed module, so as to receive and transmit the printing media from the flexographic feed module. The position of the digital printing device on the support rail 11 is adjustable. When using the integrated equipment, the digital printing device is adjusted to a suitable position on the support rail 11 according to 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 mounted on the feeding roll and wound around the flexographic feeding module, which is positioned between the flexographic modules to guide and transport the printing medium. As needed, the printing medium is pulled out from the flexographic feeding module and wound around the digital feeding module. After being guided by the digital feeding module, it is wound around the subsequent flexographic feeding module. Thus, on the same equipment, both flexographic printing and variable data digital printing can be completed on the printing medium using the flexographic modules and the digital printing device. Furthermore, the digital printing device can be placed between any steps of the flexographic printing process according to printing needs, enabling more diverse combinations of flexographic printing and digital printing. The flexographic printing device 1 and the digital printing device are integrated into the same equipment, and the flexographic feeding module and the printing feeding module are matched, facilitating color registration between flexographic printing and digital printing.

[0041] This embodiment provides an integrated flexographic printing and digital printing device, which effectively integrates a digital printing device and a flexographic printing device, thereby achieving one-stop online printing for both flexographic printing and digital printing. This effectively reduces production costs and improves production efficiency. Compared with offline printing in the prior art, the problem of color misregistration is easier to solve. The printing module and digital feed module of the digital printing device are mounted on a track above the flexographic printing device, allowing the digital printing device to be adjusted arbitrarily on the track to meet different printing needs. For manufacturers with variable data printing needs, only the digital printing device, i.e., only the printing module and the digital feed module, needs to be purchased, without the need to purchase a complete digital printer, which saves costs and allows for flexible production transformation and upgrading.

[0042] Example 2:

[0043] Based on Embodiment 1, and referring to Figures 2 and 3, the digital printing device includes a color digital printing device 2. The color digital printing device 2 includes a color printing module 21, a color bottom support frame 22, and a color feed module 23. The color printing module 21 and the color feed module 23 are mounted on the color bottom support frame 22. The bottom of the color bottom support frame 22 is connected to the support rail 11, and the relative position of the color bottom support frame 22 and the support rail 11 is adjustable. The color feed module 23 is located at the front of the color bottom support frame 22 and is used to receive and convey the printing media from the flexographic feed module of the flexographic printing device 1. The color printing module 21 is located above the color bottom support frame 22. A plurality of printheads are mounted on the color printing module 21. The printheads are located above the color feed module 23, and the bottom surface of the printheads is parallel to the upper surface of the printing media on the color feed module 23 below them. The distance between the printheads and the printing media is adjustable.

[0044] In this embodiment, the color digital printing device 2 integrates a color printing module 21 containing a printhead for variable data digital printing, a color bottom support frame 22 connected to and supporting the support rail 11, and a color feeding module 23 corresponding to the flexographic feeding module. The support rail 11 and the flexographic feeding module on the flexographic printing device 1 replace the base and feeding / receiving module of the traditional digital printer, making the structure of the color digital printing device 2 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 feeding 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.

[0045] Further, referring to Figures 2 and 5, the color printing module 21 includes a color main frame 211, a color lifting frame 212, a color lifting frame 213, a color secondary ink cartridge assembly 214, a color printhead base plate assembly 215, and a color moisture retention assembly 216. The color lifting frame 213 is fitted outside the color lifting frame 212, and the relative height between the color lifting frame 213 and the color lifting frame 212 is adjustable. The color printhead base plate assembly 215 is installed side-by-side at intervals at the bottom of the color lifting frame 212, and the printhead is installed on... Inside the color printhead base plate assembly 215, the color secondary ink cartridge assembly 214 is installed on the upper end of the color lifting frame 212; the color main frame 211 is sleeved on the outside of the color lifting frame 213, the relative height between the color lifting frame 213 and the color main frame 211 is adjustable, the color main frame 211 is fixedly installed above the color bottom support frame 22, the color moisturizing component 216 is installed at the bottom of the color main frame 211, and the color moisturizing component 216 can move back and forth relative to the color main frame 211.

[0046] In this embodiment, the color printing module 21, as its name suggests, aims to print variable color data. For color digital printing, in order to match the printing speed of flexographic printing, it is necessary to arrange multiple high-precision printheads to achieve its color digital printing function. In order to integrate the color printing module 21 with the flexographic printing device 1, the color printing module 21 needs to be as small in size and as light in weight as possible. Due to the requirements of printing and printhead humidification, the distance between the printhead of the color printing module 21 and the printing medium needs to be adjustable. Since the printing speed is relatively fast, the curing of ink after printing needs to be timely, and UV lamps also need to be installed properly. Therefore, in this embodiment, the color printing module 21 adopts a multi-layer nested frame pattern, with the color printhead base plate assembly 215 and the color secondary ink cartridge assembly for supplying ink to the printhead mounted on the innermost color lifting frame 212. The color lifting frame 213 is fitted onto the outside of the color lifting frame 212. The relative height between the color lifting frame 213 and the color lifting frame 212 is micro-adjustable, thereby allowing for micro-adjustment of the height of the color lifting frame 212, and consequently micro-adjustment of the distance between the printhead and the printing medium. The height between the color lifting frame 213 and the color main frame 211 is also adjustable, allowing for coarse adjustment of the height of the color lifting frame 212 to provide space for the color moisturizing assembly 216 to move back and forth.

[0047] In use, when the distance between the print head and the printing medium in the color printing module 21 needs to be finely adjusted, it can be adjusted by adjusting the relative height of the color lifting frame 212 and the color lifting frame 213. When the print head needs maintenance after printing, the height between the color lifting frame 213 and the color main frame 211 can be adjusted so that the color moisturizing component 216 moves forward to below the color print head base plate assembly 215 and completes the ink scraping treatment at the bottom of the print head during the backward movement. Then it moves forward again to below the color print head base plate assembly 215 and makes the color print head moisturizing plate 2162 and the print head on the color base plate 2151 interlock to moisturize and maintain the print head.

[0048] Further, referring to Figure 4, the colored main frame 211 includes colored main side plates 2111 spaced apart on the left and right, and a colored main mounting plate 2112 horizontally arranged between the two colored main side plates 2111. The bottom end of the colored main side plates 2111 is fixedly connected to the upper end of the colored bottom support frame 22. The colored lifting frame 213 is connected to the colored main mounting plate 2112. A colored lifting drive device is provided between the colored lifting frame 213 and the colored main mounting plate 2112. The colored lifting drive device is used to drive the colored lifting frame 213 to move up and down, thereby adjusting the relative position of the colored lifting frame 213 and the colored main frame 211.

[0049] Furthermore, referring to FIG4, the color lifting drive device includes a color lifting motor 2113 fixedly installed on the color main mounting plate 2112. The output end of the color lifting motor 2113 faces upward and is fixedly connected to the bottom end of the color lifting screw 2114. A color lifting nut 2115 is sleeved on the color lifting screw 2114, and the color lifting nut 2115 is fixedly installed on the color lifting frame 213.

[0050] In this embodiment, when adjusting the height of the colored lifting frame 213 using the colored lifting drive device, the colored lifting motor 2113 is activated. The rotation of the colored lifting motor 2113 drives the colored lifting screw 2114 to rotate, thereby causing the colored lifting nut 2115 to move upward or downward along the colored lifting screw 2114, and thus causing the colored lifting frame 213 to move upward or downward. Since the height is adjusted using a motor and screw nut, coarse adjustment of the height of the colored lifting frame 213 can be achieved.

[0051] Furthermore, a colored lifting cable nut 2116 is fixedly installed on the rear surface of the colored lifting frame 213, and the colored lifting cable nut 2115 is fixedly installed inside the colored lifting cable nut 2116.

[0052] Furthermore, referring to Figures 5 and 6, the colored hoisting frame 212 includes colored hoisting side plates 2121 nested inside both sides of the colored hoisting frame 212 and a colored hoisting bottom frame disposed at the bottom of the colored hoisting side plates 2121. The number of colored nozzle bottom plate assemblies 215 is multiple and they are disposed at left and right intervals within the colored hoisting bottom frame.

[0053] Further, referring to Figure 5, the colored lifting frame 213 includes a colored lifting back plate 2131 and colored lifting side plates 2132 disposed on both sides of the colored lifting back plate 2131 and fixedly connected to it perpendicularly. The colored lifting back plate 2131 is connected to the colored main frame 211. Colored lifting hoisting holes 2133 are provided at the front and rear ends of the bottom of the colored lifting side plates 2132. Colored hoisting screws 2134 are respectively installed on the left and right sides of the colored hoisting base frame. The colored hoisting screws 2134 pass through the bottom of the colored hoisting base frame, and the upper end passes through the bottom of the colored lifting side plates 2132 and is inserted into the colored lifting hoisting holes 2133. The upper end is locked and fixed by colored hoisting nuts. A colored hoisting spring 2135 is sleeved on the outside of the part of the colored hoisting screws 2134 located between the colored lifting side plates 2132 and the colored hoisting base frame.

[0054] In this embodiment, when adjusting the relative height between the color lifting frame 213 and the color hoisting frame 212, the length of the color hoisting screws 2134 extending into the color lifting hoisting holes 2133 can be adjusted by turning the color hoisting screws 2134. This allows for fine adjustment of the distance between the color hoisting base frame and the color lifting side plate 2132, thereby achieving fine adjustment of the distance between the print head and the printing medium. Since color hoisting screws 2134 are provided at both the front and rear ends of the left and right color lifting side plates 2132, the tilt angle of the color hoisting base frame can be adjusted using the four color hoisting screws 2134. This ensures that the print head on the color print head base plate assembly 215 within the color hoisting base frame is parallel to the upper surface of the printing medium below it.

[0055] Furthermore, the colored hoisting base frame includes a colored hoisting front beam 2122 and a colored hoisting rear beam 2123 arranged parallel to each other. Colored hoisting strips 2124 are installed at the left and right ends between the colored hoisting front beam 2122 and the colored hoisting rear beam 2123. Colored hoisting screws 2134 are respectively connected to the colored hoisting strips 2124 and the colored lifting side plates 2132.

[0056] Example 3:

[0057] Based on Embodiment 2, and referring to Figures 6 and 7, the color printhead base plate assembly 215 includes a color base plate 2151, a color base plate adjustment device disposed between the color base plate 2151 and the color mounting base frame, a plurality of printing printheads installed in the color base plate 2151, a color printhead adjustment device disposed between the printing printheads and the color base plate 2151, and a color base plate UV lamp 2157 disposed at the right end of the color base plate 2151, wherein the irradiation range of the long side of the color base plate UV lamp 2157 covers the long side printing range of the printing printheads.

[0058] In this embodiment, multiple color printhead base plate assemblies 215 are arranged at intervals within the color mounting frame. Each color printhead base plate assembly 215 is equipped with several interconnected printheads. Each printhead on the color printhead base plate assembly 215 prints one color of ink. After printing, the ink is irradiated by a color base plate UV lamp on its side to allow for initial curing, preventing excessive droplet diffusion and thus quickly controlling the droplet diameter for higher quality printing. The final curing of the ink droplets depends on the color paper feeding UV lamp in the color feeding module.

[0059] Furthermore, the front end of the colored base plate 2151 is provided with an outwardly protruding colored base plate boss 2152, and the rear end is provided with an inwardly recessed colored base plate adjustment groove. The colored base plate adjustment device includes a colored base plate adjustment block 2125 disposed around the colored base plate boss 2152 and a colored base plate positioning pin 2126 disposed in the colored base plate adjustment groove. The colored base plate adjustment block 2125 is installed on the colored hoisting base frame, and the left and right sides of the colored base plate adjustment block 2125 are... Colored base plate adjusting nails are installed on the sides respectively. The ends of the colored base plate adjusting nails abut against the left and right side surfaces of the colored base plate boss 2152 respectively. Colored base plate adjusting nails and colored base plate fixing screws are installed at the front end of the colored base plate adjusting block 2125. The ends of the colored base plate adjusting nails at the front end of the colored base plate adjusting block 2125 abut against the front end surface of the colored base plate boss 2152. The ends of the colored base plate fixing screws are installed inside the front end surface of the colored base plate boss 2152.

[0060] In this embodiment, the front-to-back position and deflection angle of the color base plate 2151 are adjusted by the color base plate adjustment device. When adjusting the front-to-back position of the color base plate 2151, the length of the color base plate adjustment pin extending out of the color base plate adjustment block 2125 can be adjusted by screwing the color base plate adjustment pin at the front end of the color base plate adjustment block 2125, thereby moving the color base plate 2151 forward or backward. The rear end opening of the color base plate adjustment groove and the cooperation between the color base plate positioning pin 2126 and the color base plate adjustment groove play a limiting and guiding role in the front-to-back movement of the color base plate 2151. After the adjustment is completed, the position of the color base plate adjustment block 2125 and the color base plate boss 2152 can be fixed by screwing the color base plate fixing screw, thereby fixing the position of the color base plate 2151. When adjusting the deflection angle of the colored base plate 2151, the length of the colored base plate adjusting pins extending from the colored base plate adjusting block 2125 on both sides of the colored base plate adjusting block 2125 can be adjusted to push the colored base plate boss 2152 to move left or right, thereby causing the colored base plate 2151 to rotate around the colored base plate positioning pin 2126, thus adjusting the deflection angle of the colored base plate 2151. After adjustment, the colored base plate fixing screws can be tightened to fix the positions of the colored base plate adjusting block 2125 and the colored base plate boss 2152, thereby fixing the position of the colored base plate 2151. The hole on the colored base plate adjusting block 2125 for accommodating the colored base plate fixing screw is an oblong hole, thus providing space for the colored base plate fixing screw to move.

[0061] Furthermore, the color printhead adjustment device includes a color printhead L-shaped adjustment block 2153 disposed at one end of the printhead, a color V-shaped adjustment block 2156 disposed at the other end of the printhead, a color printhead adjustment screw 2154 mounted on the color base plate 2151 and abutting against the left side of the inner corner of the color printhead L-shaped adjustment block 2153, two color elastic pins 2155 mounted on the color base plate 2151 and abutting against the front right sides of the short side of the color printhead L-shaped adjustment block 2153 respectively, and a color printhead adjustment screw 2154 mounted on the color base plate 2151 and disposed in the V-groove of the color V-shaped adjustment block 2156. The contact surface between the color printhead adjustment screw 2154 and the color printhead L-shaped adjustment block 2156 and the color V-shaped adjustment block 2156 is a conical surface.

[0062] In this embodiment, the front-to-back position and deflection angle of the print head are adjusted by a color print head adjustment device. When adjusting the front-to-back position of the print head, the color print head adjustment screw 2154 on the rear side of the print head can be turned to move it downwards or upwards, thereby causing the print head to move forwards or backwards. When adjusting the deflection angle of the printhead, the color printhead adjusting screw 2154 is turned down or up. Since the contact surface between the color printhead adjusting screw 2154 and the color printhead L-shaped adjusting block 2156 is a conical surface, when the color printhead adjusting screw 2154 moves down, it exerts a squeezing force on the color printhead L-shaped adjusting block 2156, causing the color printhead L-shaped adjusting block to move to the right. This causes the printhead to rotate counterclockwise around the color printhead adjusting screw 2154, while the color elastic pin 2155 is always pressed against the front end and right side of the color printhead L-shaped adjusting block. When the color printhead adjusting screw 2154 moves up, under the pressing action of the color elastic pin 2155, the color printhead L-shaped adjusting block moves to the left, causing the printhead to rotate clockwise around the color printhead adjusting screw 2154.

[0063] Example 4:

[0064] Based on embodiment 2 or 3, and referring to Figure 8, the color feeding module 23 includes a color paper feeding platform assembly 231 and a left color paper feeding servo control assembly and a right color paper feeding servo control assembly disposed on the left and right sides of the color paper feeding platform assembly and are detachable. The left color paper feeding servo control assembly includes a left color paper feeding frame 232 disposed on the left side of the color paper feeding platform assembly 231 and is detachable. A left color paper feeding drive roller 233 is installed on the left color paper feeding frame 232, and a left color paper feeding servo motor 234 is installed at the end of the left color paper feeding drive roller 233. The right color paper feeding servo control assembly includes a right color paper feeding frame 235 disposed on the right side of the color paper feeding platform assembly 231 and is detachable. A right color paper feeding drive roller 236 is installed on the right color paper feeding frame 235, and a right color paper feeding servo motor 237 is installed at the end of the right color paper feeding module 23. A color paper feeding UV lamp 238 is installed at the right end of the color feeding module 23.

[0065] In this embodiment, detachable drive rollers equipped with servo motors are respectively provided on the left and right sides of the color paper feeding platform assembly 231. When the tension and feeding speed of the printing medium of the flexographic printing device 1 are relatively stable, and no additional servo motor is needed to control the transmission speed of the printing medium when the color digital printing device 2 and the flexographic printing device 1 are connected, the drive rollers on the left and right sides of the color paper feeding platform assembly 231 can be removed, which saves costs and reduces weight. When the flexographic printing device 1 and the color digital printing device 2 are connected, and an additional servo motor is needed to control the transmission speed of the printing medium, a frame, drive rollers and servo motor can be installed on the left and right sides of the color paper feeding platform 231, so that the operation of the color digital printing device 2 and the flexographic printing device 1 is more stable when integrated and connected, thereby ensuring the printing quality.

[0066] Furthermore, the color bottom support frame 22 includes a color printhead bottom support plate 222 connected to the support rail 11 and color bottom frame side plates 221 vertically arranged on the color printhead bottom support plate 222 and forming a square frame. The color feed module 23 is fixedly connected to the color bottom frame side plates 221 located on the front side of the color printhead bottom support plate 222, and the color main side plate 2111 is fixedly connected to the color bottom frame side plates 221 located on the left and right sides of the color printhead bottom support plate 222. The color paper feed UV lamp 238 is used for the final curing of ink on the printing medium at the end of the color feed module 23 after variable data digital printing is completed.

[0067] Example 5:

[0068] Based on embodiment 3 or 4, and referring to Figure 9, the color moisturizing component 216 includes a color moisturizing mounting frame 2161. Several color printhead moisturizing plates 2162 are arranged at intervals on the color moisturizing mounting frame 2161. The color printhead moisturizing plates 2162 are matched with the color base plate 2151. The bottom of each color printhead moisturizing plate 2162 has an ink leakage hole. A [missing information - likely a device or component] is installed on the front side of the color moisturizing mounting frame 2161 at a position corresponding to the color printhead moisturizing plates 2162. A color scraper cartridge 2163 is provided with a color scraper ink receiving groove 21631. Several color scraper blades 2164 are provided on the front side of the color scraper ink receiving groove 21631. The color scraper blades 2164 are matched with the print head on the color base plate 2151. An ink outlet hole is provided at the bottom of the color scraper ink receiving groove 21631. The color moisturizing mounting frame 2161 is installed at the bottom of the color main frame 211 and can move back and forth relative to the color main frame 211.

[0069] In this embodiment, the color printhead base plate assembly 215 is placed at the front end of the color printing module 21. During printing, the color moisturizing assembly 216 is placed at the rear bottom of the color printing module 21. When the printhead needs to be cleaned or moisturized after printing, the color printhead base plate assembly 215 is driven upward by the color lifting drive device to provide space for the color moisturizing assembly 216 to move. The color moisturizing mounting frame 2161 moves forward to below the color hanging base frame, so that the color printhead moisturizing plate 2162 and the part of the color base plate 2151 where the printhead is installed are interlocked. If necessary, the height of the color hanging base frame can be adjusted again by the color lifting drive device. The residual ink in the printhead is discharged by introducing cleaning fluid or positive pressure gas into the ink path. The ink is discharged into the color printhead moisturizing plate 2162 and discharged into the waste ink bucket from the ink leakage hole. For residual ink droplets at the bottom of the printhead, the color moisturizing mounting frame 2161 can be moved below the color mounting base frame, and the color scraper 2164 can be brought into contact with the bottom surface of the printhead on the color base plate 2151. Then, the color moisturizing mounting frame 2161 moves backward so that the color scraper 2164 can scrape off the residual ink droplets on the bottom surface of the printhead on the printhead base plate. The scraped-off ink droplets fall into the color scraper ink collection tray 21631 and are discharged from the ink outlet. When the printing job stops, to prevent the printhead nozzles from drying out and clogging, the color printhead moisturizing plate 2162 can be interlocked with the color base plate 2151 to moisturize the printhead. At this time, a moisturizing cotton soaked in cleaning solution can be placed in the color printhead moisturizing plate 2162.

[0070] Example 6:

[0071] Based on Embodiment 5, and referring to Figure 10, a color moisturizing moving drive device is provided between the color moisturizing mounting frame 2161 and the color main frame 211. The color moisturizing moving drive device includes a color moisturizing drive motor 21651 installed at one end of the bottom of the color main frame 211. A color moisturizing drive pulley is fixedly installed at the output end of the color moisturizing drive motor 21651. The color moisturizing drive pulley is connected to the color moisturizing first driven pulley 21653 through a color moisturizing drive belt 21652. The color moisturizing first driven pulley 21653 is connected to the color moisturizing drive belt 21654 through a color moisturizing transmission belt 21654. The second driven pulley 21655 is connected to the color moisturizing second driven pulley 21655, which is rotatably mounted on the other end of the bottom of the color main frame 2161. The color main frame 211 is equipped with a color moisturizing guide rail 21658, and the color moisturizing mounting frame 2161 is equipped with a color moisturizing connecting slider 21656. The color moisturizing connecting slider 21656 and the color moisturizing guide rail 21658 are connected to each other. The color moisturizing connecting slider 21656 is fixedly mounted with a color moisturizing belt pressure plate 21657, and the color moisturizing belt pressure plate 21657 is pressed and connected to the color moisturizing transmission belt 21654.

[0072] In this embodiment, when the colored moisturizing component 216 moves back and forth, the colored moisturizing drive motor 21651 rotates, driving the colored moisturizing active pulley to rotate. Then, the colored moisturizing active belt 21652 drives the colored moisturizing first driven pulley 21653 to rotate, and then drives the colored moisturizing second driven pulley 21655 to rotate through the colored moisturizing transmission belt 21654. This ensures that the colored moisturizing transmission belt 21654 is always kept taut and rotates clockwise or counterclockwise under the drive of the colored moisturizing drive motor 21651. The colored moisturizing transmission belt 21654 is connected to the colored moisturizing mounting frame 2161 through the colored moisturizing belt pressure plate 21657 and the colored moisturizing connecting slider 21656, so that the colored moisturizing mounting frame 2161 can move back and forth when the colored moisturizing transmission belt 21654 rotates. The cooperation between the colored moisturizing guide rail 21658 and the colored moisturizing connecting slider 21656 serves two purposes: firstly, it makes the connection between the colored moisturizing component 216 and the colored moisturizing moving drive device more stable; secondly, it makes the colored moisturizing component 216 move more smoothly and steadily when it moves back and forth under the drive of the colored moisturizing transmission belt 21654.

[0073] Example 7:

[0074] Based on Embodiment 1, referring to Figures 11 to 13, the digital printing device includes a monochrome digital printing device 3. The monochrome digital printing device 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.

[0075] In this embodiment, the monochrome digital printing device 3 integrates a monochrome printing module 31 containing a printhead 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 monochrome digital printing device 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.

[0076] Example 8:

[0077] Based on Embodiment 7, and referring to Figures 13 and 14, 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, 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 is movable back and forth relative to the monochrome printing main mounting plate 314.

[0078] 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.

[0079] 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.

[0080] Furthermore, referring to FIG16, 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, and the monochrome lifting nut 326 is fixedly mounted on the monochrome printing main mounting plate 314.

[0081] 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.

[0082] 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.

[0083] Example 9:

[0084] Based on Embodiment 8, and referring to Figures 14 and 15, 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 printhead main mounting plate 314, and the monochrome base plate rear fixing plate 31212 is fixedly installed on the bottom rear side of the monochrome printhead main mounting plate 314. The monochrome printhead base plate 3122 overlaps... Installed between the front fixing plate 31211 and the rear fixing plate 31212 of the monochrome base plate, the number of printheads is at least two and they are 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 printhead and is used to adjust the front and rear position and deflection angle of the printhead in the horizontal plane.

[0085] 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.

[0086] 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.

[0087] 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.

[0088] 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.

[0089] 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.

[0090] 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.

[0091] 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.

[0092] 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.

[0093] Furthermore, the monochrome lifting motor 324 is fixedly installed on the monochrome main back plate 323.

[0094] Example 10:

[0095] Based on Embodiment 9, referring to Figure 17, the monochrome moisturizing component 313 includes a monochrome moisturizing mounting frame. A monochrome printhead moisturizing plate 3131 is mounted on the upper end of the monochrome moisturizing mounting frame. The monochrome printhead moisturizing plate 3131 matches the monochrome printhead base plate 3122. An ink leakage hole is provided at the bottom of the monochrome printhead moisturizing plate 3131. A monochrome scraper cartridge is provided on the front side of the monochrome printhead moisturizing 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 moisturizing plate 3131 is mounted on the monochrome main frame 32 and can move back and forth relative to the monochrome main frame 32.

[0096] 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.

[0097] 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.

[0098] 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.

[0099] 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.

[0100] 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.

[0101] Example 11:

[0102] Based on Embodiment 7, and referring to FIG18, 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.

[0103] 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 transmission speed of the printing medium when the monochrome digital printing device 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 transmission speed of the printing medium when the flexographic printing device 1 is docked with the monochrome digital printing device 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 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.

[0104] 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.

[0105] 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.

[0106] 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.

[0107] 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.

[0108] 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.

[0109] 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.

[0110] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. An integrated device of flexographic printing and digital printing, characterized in that: The application relates to a printing device, which comprises a flexographic printing device (1) and a digital printing device, wherein the flexographic printing device (1) comprises a supporting platform, a flexographic printing feeding module, a plurality of flexographic printing modules and a supporting rail (11) arranged above the flexographic printing modules, the flexographic printing modules are arranged on the supporting platform in a left-right interval, the flexographic printing modules are used for flexographic printing of a printing medium, the flexographic printing feeding module is arranged on the supporting platform and located between the flexographic printing modules, and is used for guiding and conveying the printing medium; the digital printing device is arranged on the supporting rail (11), and the position of the digital printing device on the supporting rail (11) is adjustable; the digital printing device comprises a printing module and a digital printing feeding module, the digital printing feeding module is located above the flexographic printing modules and corresponds to the flexographic printing feeding module, is used for receiving and conveying the printing medium from the flexographic printing feeding module, and the printing module is arranged above the digital printing feeding module and is used for variable data digital printing of the printing medium on the digital printing feeding module.

2. The flexographic printing and digital printing integrated device according to claim 1, characterized in that: The digital printing device comprises a color digital printing device (2), the color digital printing device (2) comprises a color printing module (21), a color bottom supporting frame (22) and a color printing feeding module (23), the color printing module (21) and the color printing feeding module (23) are installed on the color bottom supporting frame (22), the bottom of the color bottom supporting frame (22) is connected with the supporting rail (11), and the relative position of the color bottom supporting frame (22) and the supporting rail (11) is adjustable; the color printing feeding module (23) is arranged at the front of the color bottom supporting frame (22) and is used for receiving and conveying the printing medium from the flexographic printing feeding module of the flexographic printing device (1); the color printing module (21) is arranged above the color bottom supporting frame (22), a plurality of printing nozzles are installed on the color printing module (21), the printing nozzles are located above the color printing feeding module (23), the bottom surface of the printing nozzles is parallel to the upper surface of the printing medium on the color printing feeding module (23) below the printing nozzles, and the distance between the printing nozzles and the printing medium is adjustable.

3. The flexographic printing and digital printing integrated device according to claim 2, characterized in that: The color printing module (21) includes a color main frame (211), a color mounting frame (212), a color lifting frame (213), a color secondary ink cartridge assembly (214), a color printhead base plate assembly (215), and a color moisturizing assembly (216). The color lifting frame (213) is fitted outside the color mounting frame (212), and the relative height between the color lifting frame (213) and the color mounting frame (212) is adjustable. The color printhead base plate assembly (215) is installed side by side at intervals at the bottom of the color mounting frame (212), and the printhead is installed on the color printhead base plate assembly. Inside the board assembly (215), the color secondary ink cartridge assembly (214) is installed on the upper end of the color lifting frame (212); the color main frame (211) is sleeved on the outside of the color lifting frame (213), the relative height between the color lifting frame (213) and the color main frame (211) is adjustable, the color main frame (211) is fixedly installed above the color bottom support frame (22), the color moisturizing component (216) is installed at the bottom of the color main frame (211), and the color moisturizing component (216) can move back and forth relative to the color main frame (211).

4. The flexographic printing and digital printing integrated device according to claim 3, characterized in that: The colored main frame (211) includes colored main side plates (2111) spaced apart on the left and right and a colored main mounting plate (2112) arranged horizontally between the two colored main side plates (2111). The bottom end of the colored main side plate (2111) is fixedly connected to the upper end of the colored bottom support frame (22). The colored lifting frame (213) is connected to the colored main mounting plate (2112). A colored lifting drive device is provided between the colored lifting frame (213) and the colored main mounting plate (2112). The colored lifting drive device is used to drive the colored lifting frame (213) to move up and down, thereby adjusting the relative position of the colored lifting frame (213) and the colored main frame (211).

5. The flexographic printing and digital printing integrated device according to claim 4, characterized in that: The color lifting drive device includes a color lifting motor (2113) fixedly installed on the color main mounting plate (2112). The output end of the color lifting motor (2113) faces upward and is fixedly connected to the bottom end of the color lifting screw (2114). A color lifting nut (2115) is sleeved on the color lifting screw (2114), and the color lifting nut (2115) is fixedly installed on the color lifting frame (213).

6. The flexographic printing and digital printing integrated device according to claim 3, characterized in that: The colored hoisting frame (212) includes colored hoisting side plates (2121) nested inside the colored hoisting frame (212) on both sides and a colored hoisting bottom frame disposed at the bottom of the colored hoisting side plates (2121). The number of colored nozzle bottom plate assemblies (215) is multiple and they are disposed at left and right intervals inside the colored hoisting bottom frame. Preferably, the colored lifting frame (213) includes a colored lifting back panel (2131) and colored lifting side panels (2132) disposed on both sides of the colored lifting back panel (2131) and fixedly connected to it perpendicularly. The colored lifting back panel (2131) is connected to the colored main frame (211). Colored lifting hoisting holes (2133) are provided at the front and rear ends of the bottom of the colored lifting side panels (2132). Colored lifting base frames are respectively installed on the left and right sides. Colored lifting screw (2134), the colored lifting screw (2134) extends out of the bottom of the colored lifting base frame, the upper end extends out of the bottom of the colored lifting side plate (2132) and passes through the colored lifting hole (2133), and the upper end is locked and fixed by a colored lifting nut. A colored lifting spring (2135) is sleeved on the outside of the part of the colored lifting screw (2134) located between the colored lifting side plate (2132) and the colored lifting base frame. Preferably, the color printhead base plate assembly (215) includes a color base plate (2151), a color base plate adjustment device disposed between the color base plate (2151) and the color hoisting base frame, a plurality of printing printheads installed in the color base plate (2151), a color printhead adjustment device disposed between the printing printheads and the color base plate (2151), and a color base plate UV lamp (2157) disposed at the right end of the color base plate (2151), wherein the irradiation range of the long side of the color base plate UV lamp (2157) covers the long side printing range of the printing printheads; Preferably, the front end of the colored base plate (2151) is provided with an outwardly protruding colored base plate boss (2152), and the rear end is provided with an inwardly recessed colored base plate adjustment groove. The colored base plate adjustment device includes a colored base plate adjustment block (2125) disposed around the colored base plate boss (2152) and a colored base plate positioning pin (2126) disposed in the colored base plate adjustment groove. The colored base plate adjustment block (2125) is installed on the colored hoisting base frame, and the left side of the colored base plate adjustment block (2125) is... Colored base plate adjusting nails are installed on both sides of the right side. The ends of the colored base plate adjusting nails abut against the left and right side surfaces of the colored base plate boss (2152). Colored base plate adjusting nails and colored base plate fixing screws are installed at the front end of the colored base plate adjusting block (2125). The ends of the colored base plate adjusting nails at the front end of the colored base plate adjusting block (2125) abut against the front end surface of the colored base plate boss (2152). The ends of the colored base plate fixing screws are installed inside the front end surface of the colored base plate boss (2152). Preferably, the color printhead adjustment device includes a color printhead L-shaped adjustment block (2153) disposed at one end of the printhead, a color V-shaped adjustment block (2156) disposed at the other end of the printhead, a color printhead adjustment screw (2154) mounted on the color base plate (2151) and abutting against the left side of the inner corner of the color printhead L-shaped adjustment block (2153), two color elastic pins (2155) mounted on the color base plate (2151) and abutting against the front right sides of the short side of the color printhead L-shaped adjustment block (2153), and a color printhead adjustment screw (2154) mounted on the color base plate (2151) and disposed in the V-groove of the color V-shaped adjustment block (2156). The contact surface between the color printhead adjustment screw (2154) and the color printhead L-shaped adjustment block (2156) and the color V-shaped adjustment block (2156) is a conical surface.

7. The flexographic printing and digital printing integrated device according to claim 2, characterized in that: The color feeding module (23) includes a color paper feeding platform assembly (231) and a left color paper feeding servo control assembly and a right color paper feeding servo control assembly, which are detachable and disposed on the left and right sides of the color paper feeding platform assembly. The left color paper feeding servo control assembly includes a detachable left color paper feeding frame (232) disposed on the left side of the color paper feeding platform assembly (231). A left color paper feeding drive roller (233) is mounted on the left color paper feeding frame (232). The end of the color feeding module (23) is equipped with a left servo motor (234) for color feeding. The right color feeding servo control component includes a detachable right frame (235) for color feeding, which is located on the right side of the color feeding platform component (231). A right transmission roller (236) for color feeding is installed on the right frame (235). A right servo motor (237) for color feeding is installed at the end of the right transmission roller (236). A color feeding UV lamp (238) for color feeding is installed at the right end of the color feeding module (23).

8. The flexographic printing and digital printing integrated device according to claim 6, characterized in that: The color moisturizing component (216) includes a color moisturizing mounting frame (2161), on which several color printhead moisturizing plates (2162) are arranged at intervals on the left and right sides. The color printhead moisturizing plates (2162) are matched with the color base plate (2151). The bottom of the color printhead moisturizing plate (2162) is provided with an ink leakage hole. A color doctor blade cartridge (2163) is installed on the front side of the color moisturizing mounting frame (2161) at a position corresponding to the color printhead moisturizing plate (2162). The color scraper ink cartridge (2163) is provided with a color scraper ink receiving groove (21631). Several color scraper blades (2164) are provided on the front side of the color scraper ink receiving groove (21631). The color scraper blades (2164) are matched with the print head on the color base plate (2151). The bottom of the color scraper ink receiving groove (21631) is provided with an ink outlet hole. The color moisturizing mounting frame (2161) is installed on the bottom of the color main frame (211) and can move back and forth relative to the color main frame (211). Preferably, a color moisturizing moving drive device is provided between the color moisturizing mounting frame (2161) and the color main frame (211). The color moisturizing moving drive device includes a color moisturizing drive motor (21651) installed at one end of the bottom of the color main frame (211). A color moisturizing drive pulley is fixedly installed at the output end of the color moisturizing drive motor (21651). The color moisturizing drive pulley is connected to the color moisturizing first driven pulley (21653) through a color moisturizing drive belt (21652). The color moisturizing first driven pulley (21653) is connected to the color moisturizing second driven pulley (2165) through a color moisturizing transmission belt (21654). 5) Connected, the second driven pulley (21655) for color moisturizing is rotatably mounted on the other end of the bottom of the main color frame (211). A color moisturizing guide rail (21658) is mounted on the main color frame (211). A color moisturizing connecting slider (21656) is mounted on the color moisturizing mounting frame (2161). The color moisturizing connecting slider (21656) and the color moisturizing guide rail (21658) are connected to each other. A color moisturizing belt pressure plate (21657) is fixedly mounted on the color moisturizing connecting slider (21656). The color moisturizing belt pressure plate (21657) and the color moisturizing transmission belt (21654) are pressed together and connected.

9. The flexographic printing and digital printing integrated device according to claim 1, characterized in that: The digital printing device includes a monochrome digital printing device (3), which includes a monochrome printing module (31), a monochrome main frame (32), and a monochrome feeding module (33). The monochrome printing module (31) and the monochrome feeding 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 feeding module (33) is equipped with... The front part of the monochrome main frame (32) is used to receive and convey the printing medium from the flexographic feeding module of the flexographic printing device (1); the monochrome printing module (31) is located above the monochrome main frame (32), and a plurality of printing nozzles are installed on the monochrome printing module (31). The printing nozzles are located above the monochrome feeding module (33), and the bottom surface of the printing nozzles is parallel to the upper surface of the printing medium on the monochrome feeding module (33) below them. The distance between the printing nozzles and the printing medium is adjustable. Preferably, the monochrome printing module (31) includes a monochrome secondary ink cartridge assembly (311), a monochrome printhead base plate assembly (312), a monochrome moisture-retaining 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), the monochrome moisture-retaining assembly (313) is mounted at the bottom of the monochrome printing main mounting plate (314), and the monochrome moisture-retaining assembly (313) can move back and forth relative to the monochrome printing main mounting plate (314). Preferably, 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). Preferably, 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) overlaps with the main mounting plate (314). Between the front fixing plate (31211) and the rear fixing plate (31212) of the monochrome base plate, the number of printing nozzles is at least two and they are disposed on the monochrome nozzle base plate (3122). The monochrome base plate adjustment device is disposed on the front and rear sides of the monochrome nozzle base plate (3122) for adjusting the front and rear position, deflection angle and tilt angle of the monochrome nozzle base plate (3122) in the horizontal plane. The monochrome nozzle adjustment device is disposed on the front and rear sides of the printing nozzle for adjusting the front and rear position and deflection angle of the printing nozzle in the horizontal plane. Preferably, 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 side of the single-color base plate adjustment block (3123) is... Single-color base plate adjusting nails are installed on both sides of the right side. 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). Preferably, 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). Preferably, 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, and two front right sides mounted on the monochrome printhead base plate (3122) and corresponding to the short side of the monochrome printhead L-shaped adjustment block (3125). A single-color elastic pin (3217) abuts against each other on each side, and a single-color nozzle positioning pin (3129) is installed on the single-color nozzle base plate (3122) and set in the V-groove of the single-color nozzle V-shaped adjustment block (3128). The contact surface between the single-color nozzle adjusting screw (3126) and the single-color nozzle L-shaped adjustment block (3125) is a conical surface, and the contact surface between the single-color nozzle positioning pin (3129) and the single-color nozzle V-shaped adjustment block (3128) is a conical surface. Preferably, the monochrome moisturizing component (313) includes a monochrome moisturizing mounting frame, a monochrome printhead moisturizing plate (3131) is mounted on the upper end of the monochrome moisturizing mounting frame, the monochrome printhead moisturizing plate (3131) is matched with the monochrome printhead base plate (3122), the bottom of the monochrome printhead moisturizing plate (3131) is provided with an ink leakage hole, a monochrome scraper box is provided on the front side of the monochrome printhead moisturizing 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 is matched with 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, and the monochrome printhead moisturizing plate (3131) is mounted on the monochrome main frame (32) and can move back and forth relative to the monochrome main frame (32). Preferably, 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), and the single-color moisturizing guide rail (31355) and the single-color moisturizing sliding block (31354) are mutually connected.

10. The flexographic printing and digital printing integrated device according to claim 9, characterized in that: 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). The monochrome paper feeding UV lamp (335) is located to the right of the monochrome printing UV lamp (34).

Images