Special paper printing apparatus and printing method thereof

Abstract

The application relates to a special paper printing device and a printing method thereof, and relates to the technical field of special paper printing production, which comprises a chassis, a unwinding roller, a printing assembly, a controller, a tensioning assembly, a drying assembly and a pretreatment device; when working, an external driving device drives the first toothed disc to rotate, transmission is sequentially meshed through the second toothed disc and the third toothed disc, a dust suction box of a dust suction assembly moves transversely and reciprocally to suck dust, meanwhile, the second toothed disc drives a scraping strip of a scraping assembly to synchronously reciprocate and elastically scrape, a vertical plate of the scraping assembly drives a dust blowing assembly to follow, pulse intermittent blowing is realized through sliding of a conversion strip in a transmission groove, the three form a composite cleaning chain of blowing-scraping-suctioning, and the surface of the special paper is pretreated in multiple stages before printing. The application has the effects of efficiently removing special paper fiber chippings and dust, and significantly improving printing quality and product yield.

Description

Technical Field

[0001] This application relates to the technical field of specialty paper printing production, and in particular to a specialty paper printing equipment and its printing method. Background Technology

[0002] Currently, specialty paper is made by using paper machines to form different fibers into paper with special functions. For example, synthetic fibers, synthetic pulp or mixed wood pulp are used alone, and different materials are used for modification or processing to give the paper different functions and uses. When printing on the surface of specialty paper, fiber debris, dust and other impurities are easily attached to the paper surface. If they are not thoroughly removed before printing, it will lead to white spots in the printed text, reduced ink adhesion, or even printing waste. Therefore, surface cleaning treatment of specialty paper before printing is crucial.

[0003] Regarding the aforementioned technologies, an existing printing apparatus for producing specialty paper, with application number CN201920909263.2, uses a blower to blow airflow through a ventilation hood onto the printing surface of the paper for dust removal. A filter screen is installed to filter the airflow, and a brush is installed at the conveyor roller to clean the roller surface. The collected foreign objects fall into a drawer. However, the dust removal method of this apparatus relies solely on airflow, which is insufficient to remove stubborn debris embedded in the paper texture or electrostatically adsorbed. The blown dust is easily dispersed, causing secondary pollution. The lack of synergistic effect between scraping and suction results in limited cleaning effectiveness, especially for specialty papers with uneven surfaces or coatings, where the problem of incomplete dust removal is more prominent.

[0004] Therefore, there is an urgent need for a pretreatment device that can perform multi-stage, efficient cleaning of the surface of specialty paper before printing. Through the combined action of blowing, scraping, and vacuuming, fiber debris and dust on the paper surface can be thoroughly removed, preventing impurities from affecting printing quality and thus improving the yield and quality of specialty paper printing. Summary of the Invention

[0005] The purpose of this application is to provide a special paper printing device and printing method thereof to solve the problems in the prior art.

[0006] The special paper printing equipment provided in this application adopts the following technical solution: it includes a base frame, an unwinding roller, a printing component, a controller, a tensioning component, and a drying component. The unwinding roller is detachably installed on the front side of the base frame. The printing component is connected to the right side of the base frame. The controller is installed on the left side of the front end of the printing component. Tensioning components are provided on both sides of the bottom inside the printing component. The drying component is connected to the discharge end of the printing component, and the bottom of the drying component is connected to the base frame. It also includes a pretreatment device installed at the feeding end of the printing component.

[0007] By adopting the above technical solution, namely, adding a pretreatment device at the feeding end of the printing component to the base frame, unwinding roller, printing component, controller, tensioning component and drying component, the surface of special paper can be cleaned in a targeted manner before printing, effectively reducing impurities entering the printing area, thereby improving printing quality.

[0008] Preferably, the pretreatment device includes a treatment box, which is locked to the feeding end of the printing component. Positioning rollers are rotatably installed on both the upper and lower sides of the feeding end of the treatment box. A dust collection component is installed inside the treatment box, and one side of the dust collection component is connected to a scraping component. The scraping component is connected to the inner side of a connecting plate, and the connecting plate is installed on the inner wall of the treatment box. Guide rollers are rotatably installed on both the left and right ends of the connecting plate. A dust blowing component is connected to the top side of the dust collection component, and the dust blowing component is locked to the upper inner end of the connecting plate.

[0009] By adopting the above technical solution, namely the pretreatment device, multi-stage cleaning of special paper is achieved, which avoids dust contamination of special paper and ensures stable paper feeding.

[0010] Preferably, the vacuuming assembly includes a swing arm, which is built into the left side of the processing box. A first toothed disc, a second toothed disc, and a third toothed disc are installed sequentially from bottom to top on the front side of the swing arm. The rear side of the first toothed disc is connected to an external driving device, and the first, second, and third toothed discs are meshed together sequentially from bottom to top. A first connecting arm is rotatably connected to the outside of the third toothed disc. The right side of the first connecting arm is rotatably connected to a slide. The rear side of the slide is limited and slidably connected to a connecting plate. A vacuum box is installed on the front side of the slide. A flexible negative pressure pipe is connected to the top of the vacuum box, and the outside of the negative pressure pipe is connected to a negative pressure suction device.

[0011] By adopting the above technical solution, the first toothed disc in the dust collection component works with an external drive device to sequentially mesh with the second and third toothed discs, and with the swing arm swinging, the first connecting arm reciprocates to push and pull the slide and the dust collection box moves laterally along the connecting plate. With the negative pressure pipe connected to the external negative pressure suction device, dynamic dust collection of the entire surface of special paper is achieved, significantly improving the dust removal coverage.

[0012] Preferably, the scraping assembly includes a second connecting arm, which is rotatably connected to the outside of the second gear disc. The right side of the second connecting arm is rotatably connected to the connecting plate. A connecting shaft is connected to the lower right end of the second connecting arm, and the connecting shaft is inserted into the interior of the movable frame. The movable frame is limited to sliding within the lower end of the connecting plate. A vertical plate is fixed to the right side of the movable frame. A micro motor is provided inside the upper end of the vertical plate. A screw is connected to the top output end of the micro motor. A lifting seat is threaded to the upper end of the screw. Insertion rods are inserted into both sides inside the lifting seat. A second spring is provided outside the insertion rods on both sides. The upper ends of the insertion rods and the second springs on both sides are connected to a limiting block. The limiting block is built into the upper end of the vertical plate, and a scraper is connected to the front side of the limiting block.

[0013] By adopting the above technical solution, the second connecting arm in the scraping component is driven by the second gear plate to realize the left and right push-pull transmission between the connecting shaft and the moving frame. In this way, the vertical plate moves back and forth inside the connecting plate. At the same time, the micro motor drives the screw to make the lifting seat drive the plug rod, the second spring, the limit block and the scraper to adjust the pressure up and down, so as to realize the elastic scraping of stubborn debris on the surface of special paper, and the pressure is adjustable and does not damage the paper.

[0014] Preferably, the dust blowing assembly includes a connecting side plate, which is connected to the right side of the vertical plate. A protective plate is connected to the right side of the connecting side plate. An air supply pipe is provided inside the protective plate. The front end of the air supply pipe is connected to a jet plate, and the rear side of the air supply pipe is connected to a conversion strip. One end of the rear side of the conversion strip is inserted into a transmission groove, which is located inside a fixed plate. Both sides of the upper end of the fixed plate are bolted to the connecting plate. A first connecting pipe is connected to the right side of the fixed plate. A second connecting pipe is sleeved on the left side of the first connecting pipe. A third connecting pipe is connected to the left side of the second connecting pipe. The bottom of the third connecting pipe extends into the protective plate, and the bottom end of the third connecting pipe is sleeved on the outside of the air supply pipe.

[0015] By adopting the above technical solution, the dust blowing component uses the connecting side plate to move back and forth with the vertical plate, thereby driving the protective plate, air supply pipe and jet plate to move synchronously. At the same time, the conversion strip slides in the transmission groove of the fixed plate, so that the first pipe, second pipe, third pipe and air supply pipe are intermittently connected to the air supply pipe to achieve pulsed air blowing on the surface of special paper, pre-blowing the dust on the outside of the special paper and further improving the cleaning effect.

[0016] Preferably, the first, second, and third gears are vertically meshed together from bottom to top along the front side of the rocker arm, and the dimensions of the first, second, and third gears are consistent.

[0017] By adopting the above technical solution, the transmission ratio is ensured to be accurate and the movement is smooth, so that the reciprocating speed of the dust collection component and the scraping component is matched, thereby improving the synchronization of collaborative cleaning.

[0018] Preferably, the rear side of the slide block is arranged in a wedge shape, and the slide block is laterally limited and slidably connected to the front side of the connecting plate through the rear wedge-shaped block end.

[0019] By adopting the above technical solution, the wobbling or deflection of the slide during reciprocating movement is prevented, thereby improving the positioning accuracy and movement stability of the vacuum cleaner box.

[0020] Preferably, the second arm is configured in an inverted V-shape, and the lower right end of the second arm is connected to the groove inside the left side of the protective plate via a shaft.

[0021] By adopting the above technical solution, the reciprocating motion of the scraping component can simultaneously drive the protective plate of the dust blowing component to move, realizing the integrated linkage of scraping and dust blowing without the need for an additional power source.

[0022] Preferably, a connecting port is provided on one side of the gas transmission pipe, and the gas transmission pipe is connected to the third connecting pipe through the connecting port.

[0023] By adopting the above technical solution, compressed air can smoothly enter the air supply pipe from the first connector, the second connector, and the third connector and be delivered to the jet plate, thus avoiding airflow interruption or leakage.

[0024] Preferably, the transmission groove is composed of an inclined short groove and a transverse groove, and the transmission distance of the transmission groove is adapted to the reciprocating movement distance of the vertical plate.

[0025] By adopting the above technical solution, when the conversion bar slides in the transmission groove, it is possible to control the jet plate to open the air blowing within a specific stroke range, thereby realizing intermittent pulse purging and improving the dust pretreatment effect.

[0026] On the other hand, this application also provides a printing method for a special paper printing device, which specifically includes the following steps: S1. Special paper unwinding: The special paper roll to be printed is installed on the unwinding roller. The special paper is released by the rotation of the unwinding roller and enters the pretreatment device, printing component, tensioning component and drying component in sequence. S2, Tension Adjustment: After the specialty paper enters the printing assembly, a constant tension force is applied to the specialty paper through the tensioning assembly; S3. Printing Pre-treatment: When the special paper enters the pre-treatment device, it works with the dust collection component, scraping component and dust blowing component installed inside the treatment box to form a composite cleaning chain of blowing-scraping-dust collection. S4. Specialty paper printing: The pre-treated specialty paper enters the printing assembly, and the ink is transferred to the surface of the specialty paper to form printed images and text; S5. Hot air drying: The printed specialty paper enters the drying unit, where hot air generated by the drying unit dries the specialty paper. S6. Rewinding into a tube: The dried specialty paper is rewound into a tube by an external rewinding device to complete the printing process.

[0027] By adopting the above technical solution, the printing method, through continuous processes of unwinding, tension adjustment, printing pretreatment, printing, hot air drying, and winding into a tube, fully utilizes the synergistic effect of the dust collection component, scraping component, and dust blowing component in the pretreatment device, significantly improving the cleanliness of the special paper surface, thereby increasing the printing yield and quality.

[0028] In summary, this application includes at least one of the following beneficial technical effects: 1. This application comprises a base frame, an unwind roller, a printing assembly, a controller, a tensioning assembly, and a drying assembly. Specifically, the unwind roller is detachably installed on the front side of the base frame, the printing assembly is connected to the right side of the base frame, the controller is installed on the left side of the front end of the printing assembly, the tensioning assembly is located on both sides of the bottom inside the printing assembly, and the drying assembly is connected to the discharge end of the printing assembly and its bottom is connected to the base frame, forming a complete printing production line. Through the cooperation of the tensioning cylinder, tensioning frame, first spring, and tensioning roller in the tensioning assembly, a constant buffer tension force is applied to the special paper to ensure that the paper remains flat and stable during the conveying and printing process, avoiding misregistration or paper wrinkles caused by tension fluctuations.

[0029] 2. This application provides unwinding, tension adjustment, printing pretreatment, printing, hot air drying, and rewinding into a roll. The unwinding step stably releases the roll material; the tension adjustment step applies a constant tension force through a tensioning component to ensure smooth paper movement; the printing pretreatment step utilizes a "blowing-scraping-dust suction" composite cleaning chain to thoroughly remove dust and debris from the surface of the specialty paper before printing; the printing step precisely transfers ink to the paper surface; the hot air drying step provides clean hot air through a drying fan and filter to quickly cure the ink; and the rewinding into a roll completes the finished product collection. The processes are seamlessly connected and synergistically enhance each other, significantly improving printing quality and yield.

[0030] 3. This application incorporates a pre-treatment device that performs targeted multi-stage cleaning on the surface of specialty paper before printing. The pre-treatment device includes a treatment box, upper and lower positioning rollers at the feed end, an internal dust collection component, a scraping component, a dust blowing component, and left and right guide rollers. The positioning rollers and guide rollers ensure that the paper passes through the treatment box stably and horizontally. The dust collection, scraping, and dust blowing work together to form a "blowing-scraping-dust collection" composite cleaning chain, effectively removing fiber debris and dust, preventing impurities from entering the printing area, and significantly improving printing clarity and yield.

[0031] 4. This application sets up a dust collection component, namely an external drive device that drives the first toothed disc to rotate, which in turn meshes with the second and third toothed discs in sequence. The swing arm swings accordingly, and the third toothed disc pushes the slide and dust collection box to move laterally and reciprocally along the connecting plate through the first connecting arm. With the help of the negative pressure pipe connected to the external negative pressure suction device, dynamic dust collection of the entire width is achieved, covering all areas of the paper and significantly improving the dust removal coverage rate.

[0032] 5. This application sets up a scraping component, in which the second connecting arm swings with the second toothed disc, drives the moving frame and vertical plate to reciprocate left and right through the connecting shaft, and the micro motor drives the screw to make the lifting seat move up and down along the plug rod, the second spring, and the limit block, thereby adjusting the contact pressure between the scraper and the paper, so as to achieve elastic scraping of stubborn debris. The pressure is adjustable and does not damage the paper. The bottom of the scraper is set in an inverted triangle shape, which is conducive to quickly scraping away dust.

[0033] 6. This application sets up a dust blowing component, in which the connecting side plate moves with the vertical plate, driving the protective plate, air supply pipe and jet plate to move synchronously. The conversion bar slides in the transmission groove of the fixed plate. The transmission groove is composed of an inclined short groove and a horizontal section groove, so that the air supply pipe rotates 90° forward and backward when it moves, so that its internal connecting port is intermittently connected to the bottom opening of the third pipe, realizing pulse blowing. Combined with the multiple jet openings of the jet plate, the dust is pre-blown loosened, and the cleaning effect is further improved by vacuuming and scraping. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the overall structure of this application; Figure 2 This is a frontal view of the internal structure diagram of this application; Figure 3 This is a frontal view of the internal structure of the tensioning component of this application; Figure 4 This is a front view structural diagram of the preprocessing apparatus of this application; Figure 5 This is a schematic diagram of the three-dimensional structure of the pretreatment device in this application; Figure 6 This is a three-dimensional structural diagram of the dust collection component of this application; Figure 7 This is a partial disassembled structural diagram of the vacuuming component of this application; Figure 8 This is a three-dimensional schematic diagram of the scraping component of this application; Figure 9 This application Figure 8 Enlarged view of point A in the middle; Figure 10 This is a three-dimensional structural diagram of the dust blowing component of this application; Figure 11 This is a schematic diagram of the disassembled structure of the dust blowing component in this application; Figure 12This is a schematic diagram of the internal cross-sectional structure of the protective plate in this application. Figure 13 This is a schematic diagram of the printing method process for this application.

[0035] Explanation of reference numerals in the attached drawings: 1. Base frame; 2. Unwinding roller; 3. Printing chamber; 4. Controller; 5. Feed guide roller; 6. First conveyor roller; 7. Connecting cylinder; 8. Tensioning cylinder; 9. Docking frame; 10. Tensioning frame; 11. Vertical rod; 12. First spring; 13. Tensioning roller; 14. Ink cylinder; 15. Spray pipe; 16. Printing roller; 17. Adjusting cylinder; 18. Bearing roller; 19. Drying chamber; 20. Drying fan; 21. Filter screen; 22. Second conveyor roller; 23. Pre-treatment device; 231. Processing box; 232. Positioning roller; 233. Dust collection assembly; 2331. Swing arm; 2332. First gear plate; 2333. Second gear plate; 2334. Third gear plate; 2335. First connecting arm; 2336. Slide. ; 2337, Dust collection box; 2338, Negative pressure pipe; 234, Scraping assembly; 2341, Second connecting arm; 2342, Connecting shaft; 2343, Moving frame; 2344, Vertical plate; 2345, Micro motor; 2346, Screw; 2347, Lifting seat; 2348, Insert rod; 2349, Second spring; 23410, Limiting block; 23411, Scraper strip; 235, Connecting plate; 236, Guide roller; 237, Dust blowing assembly; 2371, Connecting side plate; 2372, Protective plate; 2373, Air supply pipe; 2374, Jet plate; 2375, Conversion bar; 2376, Transmission groove; 2377, Fixing plate; 2378, First connecting pipe; 2379, Second connecting pipe; 23710, Third connecting pipe. Detailed Implementation

[0036] The following is in conjunction with the appendix Figure 1 -Appendix Figure 13 This application will be described in further detail below.

[0037] A special paper printing device, with reference to Figures 1-3 The system includes a base frame 1, an unwinding roller 2, a printing assembly, a controller 4, a tensioning assembly, and a drying assembly. The unwinding roller 2 is detachably mounted on the front side of the base frame 1. The printing assembly is connected to the right side of the base frame 1. The controller 4 is installed on the left side of the front end of the printing assembly. Tensioning assemblies are provided on both sides of the bottom inside the printing assembly. The drying assembly is connected to the discharge end of the printing assembly, and the bottom of the drying assembly is connected to the base frame 1. The system also includes a pretreatment device 23 installed at the feed end of the printing assembly.

[0038] Specifically, based on the base frame 1, unwinding roller 2, printing assembly, controller 4, tensioning assembly and drying assembly, a pre-treatment device 23 is added to the feeding end of the printing assembly, which can perform targeted cleaning on the surface of special paper before printing, effectively reducing impurities entering the printing area, thereby improving printing quality. The printing assembly includes a printing box 3, a feed guide roller 5, a first conveying roller 6, an ink cylinder 14, a spray pipe 15, a printing roller 16, an adjusting cylinder 17, and a carrying roller 18. The printing box 3 is connected to the right side of the base frame 1. The left side of the printing box 3 is symmetrically equipped with feed guide rollers 5 for feeding and conveying special paper. Three first conveying rollers 6 are sequentially installed on the same horizontal plane in the middle of the printing box 3. The top of the printing box 3 is equipped with an ink cylinder 14, which contains a pump. 14 is connected to the top of the spray pipe 15 through the internal pump body, the bottom of the spray pipe 15 is connected to the printing roller 16, and there is a gap between the bottom opening of the spray pipe 15 and the printing roller 16. Adjusting cylinders 17 are installed on the upper ends of both sides of the printing roller 16, and the tops of the adjusting cylinders 17 on both sides are locked to the top of the printing box 3, so as to meet the flexible adjustment of the vertical position of the printing roller 16. The bottom of the printing roller 16 is equipped with a support roller 18, and the front and rear ends of the support roller 18 are rotatably connected to the printing box 3. The tensioning assembly includes a connecting cylinder 7, a tensioning cylinder 8, a docking frame 9, a tensioning frame 10, a vertical rod 11, a first spring 12, and a tensioning roller 13. The connecting cylinder 7 is installed on the bottom left and right sides of the printing box 3. The bottom of each connecting cylinder 7 is equipped with a tensioning cylinder 8. The top of the tensioning cylinder 8 is connected to the docking frame 9, and the docking frame 9 is slidably built into the upper end of the connecting cylinder 7. The tensioning frame 10 is inserted inside the docking frame 9, and the bottom two sides of the tensioning frame 10 are slidably connected to the vertical rod 11. The outside of each vertical rod 11 is equipped with a first spring 12 that is elastically engaged. The top of the tensioning frame 10 is equipped with a tensioning roller 13, and the tensioning roller 13 is respectively positioned on the left and right sides of the lower end of the carrying roller 18 to meet the tensioning and tilting transmission of special paper. The drying assembly includes a drying chamber 19, a drying fan 20, a filter screen 21, and a second conveying roller 22. The drying chamber 19 is connected to the discharge end of the printing box 3, and the drying fan 20 is provided at the top inside the drying chamber 19. The air inlet end of the drying fan 20 is detachably provided with a filter screen 21 for air filtration. The second conveying roller 22 is installed on both the left and right sides inside the drying chamber 19, and the positions of the second conveying roller 22 are opposite to the first conveying roller 6.

[0039] Reference Figures 4-5The pretreatment device 23 includes a treatment box 231, which is locked to the feeding end of the printing component. The left side of the treatment box 231 can be opened and closed to facilitate the maintenance of the internal equipment. Positioning rollers 232 are rotatably installed on both the upper and lower sides of the feeding end of the treatment box 231 to ensure stable feeding of special paper. A dust collection component 233 is installed inside the treatment box 231, and the outer side of the dust collection component 233 is connected to the scraping component 234. The scraping component 234 is connected to the inner side of the connecting plate 235, and the connecting plate 235 is installed on the inner wall of the treatment box 231. Guide rollers 236 are rotatably installed on both the left and right ends of the connecting plate 235. A dust blowing component 237 is connected to the top side of the dust collection component 233, and the dust blowing component 237 is locked to the upper inner end of the connecting plate 235.

[0040] Specifically, the pretreatment device 23 achieves multi-stage cleaning of the special paper, avoiding dust contamination of the special paper, while ensuring stable paper feeding.

[0041] Reference Figures 6-7 The vacuuming assembly 233 includes a swing arm 2331, which is built into the left side of the processing box 231. A first toothed disc 2332, a second toothed disc 2333, and a third toothed disc 2334 are sequentially mounted on the front side of the swing arm 2331 from bottom to top. The rear side of the first toothed disc 2332 is connected to an external drive device, and the first toothed disc 2332, the second toothed disc 2333, and the third toothed disc 2334 are sequentially meshed from bottom to top. The third toothed disc 2334 is externally rotatably connected. There is a first connecting arm 2335, which extends to the right. The right side of the first connecting arm 2335 is rotatably connected to the slide 2336. The rear side of the slide 2336 is limited and slidably connected to the connecting plate 235. A dust collection box 2337 is installed on the front side of the slide 2336 to enable the slide 2336 to move laterally and reciprocally. A flexible negative pressure pipe 2338 is connected to the top of the dust collection box 2337, and the outside of the negative pressure pipe 2338 is connected to a negative pressure suction device.

[0042] Specifically, the first toothed disc 2332 in the dust collection assembly 233 works with an external drive device to sequentially mesh with the second toothed disc 2333 and the third toothed disc 2334. In addition, the swing arm 2331 swings, causing the first connecting arm 2335 to reciprocate to push and pull the slide 2336 and the dust collection box 2337 to move laterally along the connecting plate 235. In conjunction with the negative pressure pipe 2338 connected to an external negative pressure suction device, dynamic dust collection of the entire surface of the special paper is achieved, significantly improving the dust removal coverage.

[0043] Among them, the first toothed disc 2332, the second toothed disc 2333 and the third toothed disc 2334 are vertically meshed and connected from bottom to top along the front side of the rocker arm 2331, and the dimensions of the first toothed disc 2332, the second toothed disc 2333 and the third toothed disc 2334 are consistent.

[0044] Specifically, this ensures precise transmission ratios and smooth movement, matching the reciprocating speeds of the vacuuming component 233 and the scraping component 234 to improve the synchronicity of collaborative cleaning.

[0045] The rear side of the slide block 2336 is generally wedge-shaped, and the slide block 2336 is laterally limited and slidably connected to the front side of the connecting plate 235 through the rear wedge-shaped block end.

[0046] Specifically, this prevents the slide 2336 from shaking or deflecting during reciprocating movement, thereby improving the positioning accuracy and movement stability of the vacuum box 2337.

[0047] Reference Figures 8-9 The scraping assembly 234 includes a second connecting arm 2341, which is rotatably connected to the outside of the second gear disk 2333. The right side of the second connecting arm 2341 is rotatably connected to the connecting plate 235. The lower right end of the second connecting arm 2341 is longitudinally connected to a connecting shaft 2342, which is inserted into the moving frame 2343. The moving frame 2343 is limited to sliding within the lower end of the connecting plate 235. A vertical groove is integrally formed inside the left side of the moving frame 2343 and is connected to the connecting shaft 2342 for transmission. A vertical plate 2344 is fixed to the right side of the moving frame 2343. A micro motor 2345 is provided inside the upper end of the vertical plate 2344. A screw 2346 is connected to the top output end of the machine 2345. A lifting seat 2347 is threaded to the upper end of the screw 2346. Insertion rods 2348 are vertically inserted into the front and rear sides of the lifting seat 2347. A second spring 2349 is provided on the outside of each insertion rod 2348. The upper ends of the insertion rods 2348 and the second springs 2349 are connected to the bottom of the limiting block 23410. The limiting block 23410 is internally housed in the upper end of the vertical plate 2344. A scraper 23411 is connected to the front side of the limiting block 23410. The bottom of the scraper 23411 is set in an inverted triangle shape to meet the requirements of rapid scraping of dust or debris on the outside of the special paper.

[0048] Specifically, the second connecting arm 2341 in the scraping assembly 234 is driven by the second gear plate 2333 to realize the left and right push-pull transmission between the connecting shaft 2342 and the moving frame 2343. In this way, the vertical plate 2344 moves back and forth inside the connecting plate 235. At the same time, the micro motor 2345 drives the screw 2346 to make the lifting seat 2347 drive the plug rod 2348, the second spring 2349, the limit block 23410 and the scraper 23411 to adjust the pressure up and down, so as to realize the elastic scraping of stubborn debris on the surface of special paper, and the pressure is adjustable and does not damage the paper.

[0049] The second arm 2341 is generally arranged in an inverted V-shaped arm shape, and the lower right end of the second arm 2341 is connected to the groove opened inside the left side of the protective plate 2372 through a shaft.

[0050] Specifically, the reciprocating motion of the scraping component 234 can simultaneously drive the protective plate 2372 of the dust blowing component 237 to move, realizing the integrated linkage of scraping and dust blowing without the need for an additional power source.

[0051] Reference Figures 10-12 The dust blowing assembly 237 includes a connecting side plate 2371, which is connected to the upper right side of the vertical plate 2344. A protective plate 2372 is connected to the right side of the connecting side plate 2371. An air supply pipe 2373 is longitudinally arranged inside the protective plate 2372. The front end of the air supply pipe 2373 is connected to a jet plate 2374, and the jet plate 2374 has multiple jet openings equidistantly arranged on its left side to allow for the loosening of dust on the exterior of the special paper. The rear side of the air supply pipe 2373 is connected to a conversion strip 2375. The right rear end of the conversion strip 2375 is inserted into the transmission groove 2376 through a shaft. The transmission groove 2376 is located inside the fixed plate 2377, i.e., it is guided by the transmission groove 2376 to... The movable conversion bar 2375 drives the gas pipe 2373 to rotate 90° in both directions. The upper left and right sides of the fixed plate 2377 are bolted to the connecting plate 235. The position of the fixed plate 2377 does not affect the left and right reciprocating movement of the vertical plate 2344. The right side of the fixed plate 2377 is connected to the first pipe 2378, and the left side of the first pipe 2378 is telescopically connected to the second pipe 2379 to adapt to the left and right movement of the protective plate 2372. The left side of the second pipe 2379 is connected to the third pipe 23710. The bottom of the third pipe 23710 extends into the interior of the protective plate 2372, and the bottom end of the third pipe 23710 is sleeved on the outside of the gas pipe 2373.

[0052] Specifically, the dust blowing assembly 237 uses the connecting side plate 2371 to move back and forth with the vertical plate 2344, thereby driving the protective plate 2372, the air supply pipe 2373 and the jet plate 2374 to move synchronously. At the same time, the conversion strip 2375 slides in the transmission groove 2376 of the fixed plate 2377, so that the first pipe 2378, the second pipe 2379, the third pipe 23710 and the air supply pipe 2373 are intermittently connected to supply air, realizing pulsed air blowing on the surface of special paper, pre-blowing the dust on the outside of the special paper, and further improving the cleaning effect.

[0053] The gas pipe 2373 has a connecting port on one side inside, and the gas pipe 2373 is connected to the third connecting pipe 23710 through the connecting port.

[0054] Specifically, compressed air smoothly enters the air supply pipe 2373 from the first pipe 2378, the second pipe 2379, and the third pipe 23710 and is delivered to the jet plate 2374, avoiding airflow interruption or leakage.

[0055] The transmission groove 2376 is composed of an inclined short groove and a transverse groove, and the transmission distance of the transmission groove 2376 is adapted to the reciprocating movement distance of the vertical plate 2344.

[0056] Specifically, when the conversion bar 2375 slides within the transmission groove 2376, it can control the jet plate 2374 to open and blow air within a specific stroke range, thereby achieving intermittent pulse purging and improving the dust pretreatment effect.

[0057] Reference Figure 13 This application provides a printing method for a special paper printing equipment, specifically including the following steps: S1. Special paper unwinding: The special paper roll to be printed is installed on the unwinding roller 2. The special paper is released by the rotation of the unwinding roller 2 and enters the pretreatment device 23, printing component, tensioning component and drying component in sequence. S2, Tension Adjustment: After the specialty paper enters the printing assembly, a constant tension force is applied to the specialty paper through the tensioning assembly; S3, Printing Pre-treatment: When the special paper enters the pre-treatment device 23, it works with the dust suction component 233, scraping component 234 and dust blowing component 237 installed inside the treatment box 231 to form a composite cleaning chain of blowing-scraping-dust suction. S4. Specialty paper printing: The pre-treated specialty paper enters the printing assembly, and the ink is transferred to the surface of the specialty paper to form printed images and text; S5. Hot air drying: The printed specialty paper enters the drying unit, where hot air generated by the drying unit dries the specialty paper. S6. Rewinding into a tube: The dried specialty paper is rewound into a tube by an external rewinding device to complete the printing process.

[0058] Specifically, the printing method, through continuous processes of unwinding, tension adjustment, printing pretreatment, printing, hot air drying, and winding into a tube, fully utilizes the synergistic effect of the dust suction component 233, the scraping component 234, and the dust blowing component 237 in the pretreatment device 23, which significantly improves the cleanliness of the special paper surface, thereby improving the printing yield and quality.

[0059] The working principle of this application is as follows: First, after the equipment is started, the special paper roll to be printed is installed on the unwinding roller 2. The unwinding roller 2 rotates to release the special paper. The paper passes through the upper and lower positioning rollers 232 at the feed end of the pretreatment device 23 in sequence to achieve stable feeding. Then it enters the processing box 231, where the guide rollers 236 at both ends of the connecting plate 235 guide the paper horizontally through the pretreatment area. When the paper enters the processing box 231, the external drive device drives the first toothed disc 2332 in the dust collection assembly 233 to rotate. The first toothed disc 2332 drives the second toothed disc 2333 and the third toothed disc 2334 to mesh and drive in sequence. The swing arm 2331 swings accordingly. The third toothed disc 2334 pushes the slide 2336 and the dust collection box 2337 to move laterally and reciprocally along the connecting plate 235 through the first connecting arm 2335. At the same time, the negative pressure pipe 2338 is connected to a negative pressure suction device, so that the dust collection box 2337 performs full-width dynamic dust collection on the surface of the special paper. At the same time, the second toothed disc 2333 drives the second connecting arm 2341 in the scraping assembly 234 to swing. The second connecting arm 2341 drives the moving frame 2343 and the vertical plate 2344 to move back and forth along the inside of the connecting plate 235 through the connecting shaft 2342. Meanwhile, the micro motor 2345 at the upper end of the vertical plate 2344 drives the screw 2346 to rotate, so that the lifting seat 2347 drives the plug rod 2348, the second spring 2349 and the limiting block 23410 to move up and down, thereby adjusting the contact pressure between the scraper 23411 and the paper surface to elastically scrape off stubborn debris from the surface. Secondly, the reciprocating movement of the vertical plate 2344 simultaneously drives the connecting side plate 2371, protective plate 2372, air supply pipe 2373, and jet plate 2374 in the dust blowing assembly 237 to reciprocate synchronously. During the left-right reciprocating movement of the air supply pipe 2373, the conversion strip 2375 connected to its rear side slides in the transmission groove 2376 of the fixed plate 2377. That is, in conjunction with the guide of the inclined groove of the transmission groove 2376, when the air supply pipe 2373 moves from left to right, it drives the conversion strip 2375 to rotate 90° counterclockwise. In this way, the air supply pipe 2373 rotates synchronously, adjusting the connecting port on one side of the air supply pipe 2373 to be opposite to the bottom opening of the third pipe 23710. As a result, compressed air will be intermittently supplied through the first pipe 2378, the second pipe 2379, the third pipe 23710 and the air supply pipe 2373. In conjunction with the multiple air jet openings on the outside of the jet plate 2374, pulse-type air blowing is achieved to remove dust from the outside of the special paper. This, combined with scraping and vacuuming, forms a composite cleaning chain of "blowing-scraping-vacuuming". After the pre-treated paper leaves the processing box 231, it enters the printing box 3. The tensioning components on both sides of the bottom of the printing box 3 work: the tensioning cylinder 8 pushes the docking frame 9 down, and the tensioning frame 10, under the buffering effect of the vertical rod 11 and the first spring 12, makes the tensioning roller 13 apply a constant tension force to the paper, ensuring that the paper remains flat and has stable tension during the printing process. The paper is guided to the printing station by the feed guide roller 5 and the first conveying roller 6. The ink in the ink cylinder 14 is pumped to the spray pipe 15. The spray pipe 15 sprays the ink onto the surface of the printing roller 16. The printing roller 16 can be adjusted up and down under the drive of the adjusting cylinder 17. It works with the carrying roller 18 below to transfer the ink to the paper surface to form pictures and text. At the same time, the tension rollers 13 are located on the left and right sides of the lower end of the carrying roller 18 to ensure that the paper is tilted and tensioned during the printing area. The printed paper enters the drying chamber 19. The drying fan 20 draws in air from the outside, which is filtered by the filter screen 21 and heated to form hot air to dry the paper. The second conveyor roller 22 guides the paper through the drying zone at a uniform speed. Finally, the dried special paper is wound into a tube by the external winding equipment, completing the entire printing process.

[0060] This application provides a special paper printing equipment and method, comprising a base frame 1, an unwinding roller 2, a printing assembly, a controller 4, a tensioning assembly, a drying assembly, and a pretreatment device 23. During operation, an external drive device rotates a first toothed disc 2332, which, through the sequential meshing of a second toothed disc 2333 and a third toothed disc 2334, causes the dust collection box 2337 of the dust collection assembly 233 to move laterally and reciprocally to collect dust. Simultaneously, the second toothed disc 2333 drives the scraper bar 23411 of the scraping assembly 234 to perform synchronous reciprocating elastic scraping. The vertical plate 2344 of the scraping assembly 234 drives the dust blowing assembly 237 to follow suit. Pulsed intermittent air blowing is achieved through the sliding of a conversion strip 2375 within the transmission groove 2376. These three components work together to form a composite cleaning chain of air blowing, scraping, and dust collection, performing multi-stage pretreatment on the surface of the special paper before printing. This application effectively removes fiber debris and dust from special paper, significantly improving printing quality and yield.

[0061] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be covered within the scope of protection of this application.

Claims

1. A special paper printing equipment, comprising a base frame (1), an unwinding roller (2), a printing component, a controller (4), a tensioning component and a drying component, wherein the unwinding roller (2) is detachably mounted on the front side of the base frame (1), the printing component is connected to the right side of the base frame (1), the controller (4) is installed on the left side of the front end of the printing component, tensioning components are provided on both sides of the bottom of the printing component, the discharge end of the printing component is connected to the drying component, and the bottom of the drying component is connected to the base frame (1); Its features are: It also includes a pretreatment device (23) installed at the feed end of the printing component. The pretreatment device (23) includes a treatment box (231). The treatment box (231) is locked at the feed end of the printing component. Positioning rollers (232) are rotatably installed on both the upper and lower sides of the feed end of the treatment box (231). A dust collection component (233) is installed inside the treatment box (231). The outer side of the dust collection component (233) is connected to the scraping component (234). The scraping component (234) is connected to the inner side of the connecting plate (235). The connecting plate (235) is installed on the inner wall of the treatment box (231). Guide rollers (236) are rotatably installed on both the left and right ends of the connecting plate (235). A dust blowing component (237) is connected to the top side of the dust collection component (233). The dust blowing component (237) is locked to the upper inner end of the connecting plate (235).

2. The special paper printing equipment according to claim 1, characterized in that: The vacuuming assembly (233) includes a swing arm (2331), which is built into the left side of the processing box (231). The front side of the swing arm (2331) is equipped with a first toothed disc (2332), a second toothed disc (2333), and a third toothed disc (2334) from bottom to top. The rear side of the first toothed disc (2332) is connected to an external drive device, and the first toothed disc (2332), the second toothed disc (2333), and the third toothed disc (2334) mesh from bottom to top. The third toothed disc (2334) is rotatably connected to a first connecting arm (2335). The right side of the first connecting arm (2335) is rotatably connected to a slide (2336). The rear side of the slide (2336) is limited and slidably connected to the connecting plate (235). A dust collection box (2337) is installed on the front side of the slide (2336). A flexible negative pressure pipe (2338) is connected to the top of the dust collection box (2337). The outside of the negative pressure pipe (2338) is connected to a negative pressure suction device.

3. The special paper printing equipment according to claim 2, characterized in that: The scraping assembly (234) includes a second connecting arm (2341), which is rotatably connected to the outside of the second gear disc (2333). The right side of the second connecting arm (2341) is rotatably connected to the connecting plate (235). A connecting shaft (2342) is connected to the lower right end of the second connecting arm (2341), and the connecting shaft (2342) is inserted into the interior of the movable frame (2343). The movable frame (2343) is limited to sliding within the lower end of the connecting plate (235). A vertical plate (2344) is fixed to the right side of the movable frame (2343). A micro motor (234) is provided inside the upper end of the vertical plate (2344). 5) The top output end of the micro motor (2345) is connected to a screw (2346), and the upper end of the screw (2346) is threadedly connected to a lifting seat (2347). The lifting seat (2347) has two insert rods (2348) inserted inside. The two insert rods (2348) on both sides are provided with a second spring (2349). The upper ends of the two insert rods (2348) and the second springs (2349) are connected to a limiting block (23410). The limiting block (23410) is built into the upper end of the vertical plate (2344), and a scraper (23411) is connected to the front side of the limiting block (23410).

4. The special paper printing equipment according to claim 3, characterized in that: The dust blowing assembly (237) includes a connecting side plate (2371), which is connected to the right side of the vertical plate (2344). A protective plate (2372) is connected to the right side of the connecting side plate (2371). An air supply pipe (2373) is provided inside the protective plate (2372). The front end of the air supply pipe (2373) is connected to a jet plate (2374), and the rear side of the air supply pipe (2373) is connected to a conversion strip (2375). One end of the rear side of the conversion strip (2375) is inserted into the transmission groove (2376), and the transmission groove (2376) is... The first pipe (2378) is connected to the right side of the fixed plate (2377). The second pipe (2379) is sleeved on the left side of the first pipe (2378). The third pipe (23710) is connected to the left side of the second pipe (2379). The bottom of the third pipe (23710) extends into the protective plate (2372), and the bottom end of the third pipe (23710) is sleeved on the outside of the gas pipe (2373).

5. The special paper printing equipment according to claim 2, characterized in that: The first toothed disc (2332), the second toothed disc (2333), and the third toothed disc (2334) are vertically meshed and connected from bottom to top along the front side of the rocker arm (2331), and the dimensions of the first toothed disc (2332), the second toothed disc (2333), and the third toothed disc (2334) are consistent.

6. The special paper printing equipment according to claim 2, characterized in that: The rear side of the slide block (2336) is generally arranged in a wedge shape, and the slide block (2336) is laterally limited and slidably connected to the front side of the connecting plate (235) through the rear wedge block end.

7. The special paper printing equipment according to claim 3, characterized in that: The second arm (2341) is generally arranged in an inverted V-shaped arm body, and the lower right end of the second arm (2341) is connected to the groove opened inside the left side of the protective plate (2372) through the shaft.

8. The special paper printing equipment according to claim 4, characterized in that: The gas supply pipe (2373) has a connecting port on one side inside, and the gas supply pipe (2373) is connected to the third pipe (23710) through the connecting port.

9. The special paper printing equipment according to claim 4, characterized in that: The transmission groove (2376) is composed of an inclined short groove and a transverse groove, and the transmission distance of the transmission groove (2376) is adapted to the reciprocating movement distance of the vertical plate (2344).

10. A printing method for a special paper printing device, wherein the special paper printing device according to any one of claims 1-9 is characterized in that, Specifically, the steps include the following: S1. Special paper unwinding: The special paper roll to be printed is installed on the unwinding roller (2). The special paper is released by the rotation of the unwinding roller (2) and enters the pretreatment device (23), printing assembly, tensioning assembly and drying assembly in sequence. S2, Tension Adjustment: After the specialty paper enters the printing assembly, a constant tension force is applied to the specialty paper through the tensioning assembly; S3, Printing Pre-treatment: When the special paper enters the pre-treatment device (23), it works with the dust suction component (233), scraping component (234) and dust blowing component (237) installed inside the treatment box (231) to form a composite cleaning chain of blowing-scraping-dust suction; S4. Specialty paper printing: The pre-treated specialty paper enters the printing assembly, and the ink is transferred to the surface of the specialty paper to form printed images and text; S5. Hot air drying: The printed specialty paper enters the drying unit, where hot air generated by the drying unit dries the specialty paper. S6. Rewinding into a tube: The dried specialty paper is rewound into a tube by an external rewinding device to complete the printing process.

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