Digital printing device and method based on intelligent temperature control

Abstract

The invention relates to the technical field of digital printing and discloses a digital printing device and method based on intelligent temperature control, the digital printing device comprises a fixing frame, an ink box is arranged on the inner top wall of the fixing frame, a first motor is fixedly connected to the outer wall of the ink box, and a first transmission shaft is fixedly arranged at the output end of the first motor; and the outer wall of the first transmission shaft is rotationally connected to the interior of the ink box, a stirring rod is fixedly connected to the outer wall of the first transmission shaft, a transmission mechanism is arranged on the outer wall of the first transmission shaft, a first rotating shaft is connected to the transmission mechanism, and multiple sets of discharging pipes are arranged on the outer wall of the fixing frame. The stirring rod is driven by the first motor to stir static ink in the ink tank in real time, scatter large ink blocks and homogenize components, impurities are intercepted and the ink blocks are condensed layer by layer through the multiple sets of filter plates, accumulated objects on the surfaces of the filter plates are synchronously crushed in cooperation with the scraper, filter holes are prevented from being blocked, the residual ink blocks are broken, and the problems caused by impurity blocking are avoided; and the flowing smoothness of ink is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of digital printing, and specifically to a digital printing device and method based on intelligent temperature control. Background Art

[0002] With the continuous progress of technology, digital printing technology will continue to be optimized in terms of printing quality, speed, and cost. At the same time, its integration with technologies such as the Internet and big data will be closer, enabling more intelligent printing production and management. Digital printing directly transfers digital graphic and text information from a computer to a printing device for printing, without going through the plate-making process in traditional printing. It precisely transfers graphics and text to paper or other printing substrates by controlling imaging materials such as ink and toner.

[0003] After retrieval, Chinese Patent Publication No. CN210126351U discloses a digital inkjet printing device, which relates to the technical field of printing. The printing platform includes a first printing platform and a second printing platform, and the second printing platform is arranged below the first printing platform; pulleys are provided at both ends of the printing platform, a conveyor belt is sleeved on the pulleys, and the pulleys of the first printing platform rotate clockwise, while the pulleys of the second printing platform rotate counterclockwise; a first baffle is further provided at one end of the first printing platform; above the first printing platform and the second printing platform, a first fixing plate and a second fixing plate are respectively provided, and an inkjet device, a heat insulation device, and a drying device are sequentially arranged on the first fixing plate and the second fixing plate according to the driving direction of the corresponding printing platform; a linear motor is provided at one end of the second fixing plate close to the first baffle, and the output end of the linear motor is connected to a second baffle. A runner is also included, which is arranged between the first printing platform and the second printing platform, close to one end of the first baffle.

[0004] However, in actual use, in the field of inkjet printing, etc., after the ink in the ink tank stands still for a long time, sedimentation is likely to occur, and some components in the ink may also coagulate into lumps on the inner surface of the ink tank or the filter plate. If these impurities and coagulated ink lumps enter the ink flow channel, it is easy to cause blockage, affecting the normal supply of ink and resulting in printing interruption or defects. Summary of the Invention

[0005] Aiming at the deficiencies of the prior art, the present invention provides a digital printing device and method based on intelligent temperature control, which solves the problem that if impurities and coagulated ink lumps enter the ink flow channel, it is easy to cause blockage, resulting in printing interruption or defects.

[0006] To achieve the above objectives, the present invention is realized through the following technical solutions. A digital printing device based on intelligent temperature control includes a fixing frame. The inner top wall of the fixing frame is provided with an ink tank. The outer wall of the ink tank is fixedly connected with a first motor. The output end of the first motor is fixedly provided with a first transmission shaft. The outer wall of the first transmission shaft is rotatably connected inside the ink tank. The outer wall of the first transmission shaft is fixedly connected with a stirring rod. A transmission mechanism is arranged on the outer wall of the first transmission shaft. The transmission mechanism is connected with a first rotating shaft. Multiple discharge pipes are arranged on the outer wall of the fixing frame. A filter plate is installed inside the discharge pipe. The outer wall of the first rotating shaft is rotatably connected inside the filter plate. The outer wall of the power transmission sleeve is fixedly connected with a first electric heating resistor and a scraper. The outer wall of the scraper is rotatably connected to the outer wall of the filter plate. A feeding component is arranged on the outer wall of the ink tank.

[0007] Preferably, the feeding component includes a feeding port. The outer wall of the feeding port is arranged on the outer wall of the ink tank. The outer wall of the feeding port is snap-connected with a lid.

[0008] Preferably, the transmission mechanism includes a protection box. The outer wall of the protection box is fixedly connected inside the ink tank. The inside of the protection box is rotatably connected to the outer wall of the first transmission shaft. The outer wall of the first transmission shaft is fixedly connected with a first bevel gear. The tooth end of the first bevel gear is meshed and connected with a second bevel gear. The outer walls of the second bevel gear and the first bevel gear are both rotatably connected inside the protection box. The outer wall of the second bevel gear is fixedly connected to the outer wall of the first rotating shaft.

[0009] Preferably, the outer wall of the power transmission sleeve is rotatably connected with a housing. The outer wall of the housing is fixedly connected inside the discharge pipe. A conductive slip ring is arranged inside the housing. The conductive slip ring is electrically connected to the power transmission sleeve.

[0010] Preferably, the lower surface of the fixing frame is fixedly connected with a first support. A ink transfer pump is fixedly connected inside the first support. The input end of the ink transfer pump is fixedly connected to the discharge pipe. The output end of the ink transfer pump is fixedly connected with a connecting pipe.

[0011] Preferably, the inner top wall of the fixing frame is fixedly connected with a second motor. The output end of the second motor is fixedly provided with a lead screw. The outer wall of the lead screw is threadedly connected with a sliding frame. A sliding rod is slidably connected inside the sliding frame. The outer wall of the sliding rod is fixedly connected to the outer wall of the fixing frame. The upper surface of the sliding frame is fixedly connected with a nozzle. The nozzle is connected to the connecting pipe.

[0012] Preferably, a temperature sensor is installed on the outer wall of the sliding frame. The outer wall of the temperature sensor is arranged inside the connecting pipe. A heater is arranged on the outer wall of the sliding frame. A second electric heating resistor is arranged on the outer wall of the heater. The outer wall of the second electric heating resistor is arranged inside the connecting pipe.

[0013] Preferably, an installation plate is provided on the lower surface of the fixing frame. An electric motor three is fixedly connected to the outer wall of the installation plate. A transmission shaft two is fixedly arranged at the output end of the electric motor three. A pulley one is fixedly connected to the outer wall of the transmission shaft two. A synchronous belt is connected to the outer wall of the pulley one. The synchronous belt is connected to a pulley two. A rotating shaft two is fixedly connected inside the pulley two. The outer walls of the rotating shaft two and the transmission shaft two are rotatably connected to the outer wall of the fixing frame. Cleaning cloth cylinders are arranged on the outer walls of the rotating shaft two and the transmission shaft two. A guiding roller is slidably connected to the outer wall of the cleaning cloth cylinder. The guiding roller is arranged on the outer wall of the fixing frame.

[0014] Preferably, it further includes a controller, and the controller is electrically connected to the conductive slip ring, the temperature sensor, and the heater.

[0015] Preferably, a method for a digital printing device based on intelligent temperature control includes the following steps: Preparation stage: Place the paper to be printed on the fixing frame and check whether all parts are working properly: First, start the electric motor one to stir the ink in the ink tank through the stirring rod to make the ink components uniform: Start the ink delivery pump to drive the ink to flow. The controller preset the heating temperature of the heating resistor one. The ink is preheated by the heating resistor one first. At the same time, the filter plate filters the ink. When filtering, the scraper rotates on the outer wall of the filter plate to crush the accumulated ink blocks; The ink flows through the ink delivery pump to the connecting pipe. The temperature sensor first detects its temperature, and then the controller controls the heater to heat the ink again; Subsequently, the ink is sprayed out through the nozzle. When spraying the ink, the sliding frame is driven to slide by the electric motor two and the lead screw, and the ink can be sprayed reciprocally; After printing, the sliding frame drives the nozzle to slide towards the cleaning cloth cylinder. The cleaning cloth cylinder cleans the nozzle and absorbs the ink inside the nozzle at the same time. Starting the electric motor three can make the cleaning cloth slide, thereby updating the cleaning cloth.

[0016] Working principle: The operator places the paper to be printed flat on the fixing frame, checks the ink stock in the ink tank, and starts the electric motor one. The transmission shaft one at its output end drives the stirring rod to rotate in the ink tank to make the ink components uniform; The ink flows out through multiple discharge pipes on the outer wall of the ink tank. The filter plates in each discharge pipe filter in the order of decreasing filter diameter, layer by layer removing impurities and coagulated ink blocks. The transmission shaft one drives the rotating shaft one through a transmission mechanism, driving the conductive sleeve and the scraper to rotate synchronously. The scraper rotates along the outer wall of the filter plate, crushing the ink blocks accumulated at the filter holes in real time and removing the blockages, ensuring the filtering efficiency; The current-conducting sleeve accesses external current through a conductive slip ring inside the housing. The outer wall of the sleeve pre-heats a pair of inks through electrothermal resistors. The ink delivery pump transports the pre-heated ink to the front of the nozzle through a connecting pipe. The temperature sensor continuously detects the ink temperature and feeds it back to the controller. The ink is secondarily heated or adjusted through the electrothermal resistor two of the heater. The second motor drives the lead screw to rotate, driving the sliding frame to reciprocate along the slide rod, so that the nozzle evenly sprays ink on the paper surface according to a preset trajectory. After printing is completed, the second motor drives the sliding frame to move the nozzle to the cleaning cloth cylinder area for cleaning. The third motor is started, and through the first pulley, the synchronous belt, and the second pulley, the second rotating shaft and the second transmission shaft are driven to rotate in opposite directions. A new cleaning cloth is released from one side of the cloth cylinder; the dirty cloth cylinder is wound up on the other side.

[0017] The present invention provides a digital printing device and method based on intelligent temperature control, with the following beneficial effects: 1. In the present invention, the first motor drives the stirring rod to continuously stir the static ink in the ink tank, break up larger ink blocks and homogenize the components. Then, multiple groups of filter plates intercept impurities and coagulated ink blocks layer by layer, and cooperate with a scraper to synchronously crush the deposits on the surface of the filter plates, preventing the filter holes from being blocked and crushing the residual ink blocks, avoiding problems caused by impurity blockage, and ensuring the smooth flow of the ink.

[0018] 2. In the present invention, the electrothermal resistor one is powered by externally connecting a conductive slip ring through the current-conducting sleeve to pre-heat the ink to an appropriate temperature. Then, the temperature sensor continuously monitors the ink temperature in the connecting pipe, and the controller adjusts the electrothermal resistor two of the heater to achieve precise compensation of the ink temperature, avoiding viscosity changes caused by environmental temperature fluctuations, ensuring that the ink passes through the nozzle in the best state, and reducing printing defects.

[0019] 3. In the present invention, the third motor drives the two cleaning cloth cylinders on both sides to wind up / release in opposite directions through a pulley group. When the nozzle slides through the cleaning area, the dirty cloth cylinder is automatically wound up and a new cloth cylinder is synchronously unfolded, realizing continuous renewal of the cleaning cloth, avoiding nozzle contamination caused by repeated use of dirty cloth. The cleaning cloth has the dual functions of wiping the impurities on the surface of the nozzle and absorbing the residual ink inside, preventing the ink from drying up and blocking the nozzle holes, prolonging the service life of the nozzle, and reducing the downtime caused by nozzle maintenance. Description of the Drawings

[0020] Figure 1 is a three-dimensional structural schematic diagram of the present invention; Figure 2 is a partial structural schematic diagram of the first rotating shaft of the present invention; Figure 3 is a partial structural schematic diagram of the second bevel gear of the present invention; Figure 4 is a partial structural schematic diagram of the first electrothermal resistor of the present invention; Figure 5 is a partial structural schematic diagram of the connecting pipe of the present invention; Figure 6 Schematic diagram of the partial structure of the lead screw of the present invention; Figure 7 Schematic diagram of the partial structure of the nozzle of the present invention; Figure 8 Schematic diagram of the partial structure of the synchronous belt of the present invention Figure 9 Schematic diagram of the method flow of the present invention.

[0021] Among them, 1. Fixed frame; 2. Ink tank; 3. Motor 1; 4. Transmission shaft 1; 5. Stirring rod; 6. Transmission mechanism; 601. Bevel gear 1; 602. Bevel gear 2; 603. Protection box; 7. Rotating shaft 1; 8. Discharge pipe; 9. Filter plate; 10. Electric conduction sleeve; 11. Electric resistance heater 1; 12. Scraper; 13. Feeding port; 14. Lid; 15. Outer shell; 16. Conductive slip ring; 17. Support 1; 18. Ink delivery pump; 19. Connecting pipe; 20. Motor 2; 21. Lead screw; 22. Slide bar; 23. Sliding frame; 24. Nozzle; 25. Temperature sensor; 26. Heater; 27. Electric resistance heater 2; 28. Mounting plate; 29. Motor 3; 30. Transmission shaft 2; 31. Pulley 1; 32. Synchronous belt; 33. Pulley 2; 34. Rotating shaft 2; 35. Cleaning cloth cylinder; 36. Guide roller. Specific embodiments

[0022] Next, the technical solutions of the present invention will be clearly and completely described in conjunction with the drawings of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0023] Please refer to the attached Figure 1 - attached Figure 3 , the embodiments of the present invention provide a digital printing device and method based on intelligent temperature control, including a fixed frame 1. The inner top wall of the fixed frame 1 is provided with an ink tank 2. The outer wall of the ink tank 2 is fixedly connected with a motor 1. The output end of the motor 1 is fixedly provided with a transmission shaft 1. The outer wall of the transmission shaft 1 is rotatably connected inside the ink tank 2. The outer wall of the transmission shaft 1 is fixedly connected with a stirring rod 5. A transmission mechanism 6 is arranged on the outer wall of the transmission shaft 1. The transmission mechanism 6 is connected with a rotating shaft 1. The outer wall of the fixed frame 1 is provided with multiple groups of discharge pipes 8. A filter plate 9 is installed inside the discharge pipes 8. The outer wall of the rotating shaft 1 is rotatably connected inside the filter plate 9. The outer wall of the rotating shaft 1 is fixedly connected with an electric conduction sleeve 10. The outer wall of the electric conduction sleeve 10 is fixedly connected with an electric resistance heater 1 and a scraper 12. The outer wall of the scraper 12 is rotatably connected to the outer wall of the filter plate 9. A feeding component is arranged on the outer wall of the ink tank 2.

[0024] Specifically, the fixing bracket 1 fixes the ink cartridge 2. Ink is stored inside the ink cartridge 2. The ink cartridge 2 fixes the first motor 3 on the lower side. Starting the first motor 3 drives the transmission shaft 4 at the output end to rotate. The ink cartridge 2 supports the rotation of the transmission shaft 4. The transmission shaft 4 drives the stirring rod 5 to rotate, which can stir the ink that has settled and precipitate, first break up the larger ink blocks. Multiple discharge pipes 8 are arranged on the outer wall of the ink cartridge 2. The discharge pipes 8 can be assembled and connected. A filter plate 9 is arranged inside each discharge pipe 8. The filter diameters of the filter plates 9 are different and can filter in sequence. After the ink flows into the discharge pipe 8, the filter plate 9 filters the ink. The transmission shaft 4 drives the rotation shaft 7 to rotate through the transmission mechanism 6. The rotation shaft 7 drives the scraper 12 and the heating resistor 11 to rotate. The scraper 12 rotates on the outer wall of the filter plate 9, which can prevent the filter plate 9 from being blocked by impurities and can also crush the ink blocks, thus avoiding blockage due to ink during printing, especially preventing the nozzle 24 from being blocked.

[0025] Please refer to the attached Figure 2 , the feeding assembly includes a feeding port 13. The outer wall of the feeding port 13 is arranged on the outer wall of the ink cartridge 2. A lid 14 is snap-connected to the outer wall of the feeding port 13.

[0026] Specifically, after the ink is used up, the lid 14 can be removed to pour ink into the feeding port 13, thereby adding ink to the ink cartridge 2.

[0027] Please refer to the attached Figure 2 , the transmission mechanism 6 includes a protection box 603. The outer wall of the protection box 603 is fixedly connected inside the ink cartridge 2. The inside of the protection box 603 is rotatably connected to the outer wall of the transmission shaft 4. A bevel gear 601 is fixedly connected to the outer wall of the transmission shaft 4. The tooth end of the bevel gear 601 is meshed with a bevel gear 602. The outer walls of the bevel gear 602 and the bevel gear 601 are both rotatably connected inside the protection box 603. The outer wall of the bevel gear 602 is fixedly connected to the outer wall of the rotation shaft 7.

[0028] Specifically, when the transmission shaft 4 rotates, it can drive the bevel gear 602 to rotate through the bevel gear 601. The bevel gear 602 can drive the rotation shaft 7 to rotate, thereby realizing the transmission of power from the transmission shaft 4 to the rotation shaft 7. The protection box 603 can protect the bevel gear 602 and the bevel gear 601 to prevent the bevel gear 601 and the bevel gear 602 from being stuck by the ink.

[0029] Please refer to the attached Figure 4 , the outer wall of the power transmission sleeve 10 is rotatably connected to a housing 15. The outer wall of the housing 15 is fixedly connected inside the discharge pipe 8. A conductive slip ring 16 is arranged inside the housing 15. The conductive slip ring 16 is electrically connected to the power transmission sleeve 10.

[0030] Specifically, the conductive slip ring 16 can introduce current from the outside. The conductive slip ring 16 is used to convey current to the current-conducting sleeve 10, so as to realize the heating of the ink by the electrothermal resistor 11. The outer shell 15 can seal the connection between the current-conducting sleeve 10 and the conductive slip ring 16, preventing the current-conducting sleeve 10 and the conductive slip ring 16 from being contaminated by the ink.

[0031] Please refer to the appendix Figure 5 , a first support 17 is fixedly connected to the lower surface of the fixing frame 1. An ink pump 18 is fixedly connected inside the first support 17. The input end of the ink pump 18 is fixedly connected to the discharge pipe 8, and the output end of the ink pump 18 is fixedly connected to a connecting pipe 19.

[0032] Specifically, the first support 17 fixes the ink pump 18. The ink pump 18 is used to introduce ink from the discharge pipe 8 and then output it through the connecting pipe 19, so as to provide power for the ink flow.

[0033] Please refer to the appendix Figure 1 and the appendix Figure 5 , a second motor 20 is fixedly connected to the inner top wall of the fixing frame 1. A lead screw 21 is fixedly arranged at the output end of the second motor 20. A sliding frame 23 is threadedly connected to the outer wall of the lead screw 21. A sliding rod 22 is slidably connected inside the sliding frame 23. The outer wall of the sliding rod 22 is fixedly connected to the outer wall of the fixing frame 1. A nozzle 24 is fixedly connected to the upper surface of the sliding frame 23. The nozzle 24 is connected to the connecting pipe 19.

[0034] Specifically, the fixing frame 1 fixes the second motor 20. The second motor 20 drives the lead screw 21 at the output end to rotate. The lead screw 21 can push the sliding frame 23 to slide. The sliding rod 22 supports the sliding of the sliding frame 23. The sliding frame 23 drives the nozzle 24 to slide. The nozzle 24 is communicated with the connecting pipe 19. The connecting pipe 19 conveys the ink to the nozzle 24, and the nozzle 24 sprays ink for printing.

[0035] Please refer to the appendix Figure 5 - appendix Figure 7 , a temperature sensor 25 is installed on the outer wall of the sliding frame 23. The outer wall of the temperature sensor 25 is arranged inside the connecting pipe 19. A heater 26 is arranged on the outer wall of the sliding frame 23. A second electrothermal resistor 27 is arranged on the outer wall of the heater 26. The outer wall of the second electrothermal resistor 27 is arranged inside the connecting pipe 19.

[0036] Specifically, before the ink flows into the nozzle 24, its temperature is first detected by the temperature sensor 25, and then the ink is reheated by the heater 26 and the second electrothermal resistor 27, which can control the temperature of the ink, ensure that the viscosity of the ink is in a stable state, and avoid quality problems such as printing leakage points and ink breakage that affect the printed matter.

[0037] Please refer to the appendix Figure 6 - appendix Figure 8, the lower surface of the fixing frame 1 is provided with a mounting plate 28, the outer wall of the mounting plate 28 is fixedly connected with a third motor 29, the output end of the third motor 29 is fixedly provided with a second transmission shaft 30, the outer wall of the second transmission shaft 30 is fixedly connected with a first pulley 31, the outer wall of the first pulley 31 is connected with a synchronous belt 32, the synchronous belt 32 is connected with a second pulley 33, the inner part of the second pulley 33 is fixedly connected with a second rotating shaft 34, the outer walls of the second rotating shaft 34 and the second transmission shaft 30 are both rotatably connected to the outer wall of the fixing frame 1, the outer walls of the second rotating shaft 34 and the second transmission shaft 30 are both provided with cleaning cloth cylinders 35, the outer wall of the cleaning cloth cylinder 35 is slidably connected with a guiding roller 36, and the guiding roller 36 is arranged on the outer wall of the fixing frame 1.

[0038] Specifically, the mounting plate 28 fixes the third motor 29, the third motor 29 drives the second transmission shaft 30 at the output end to rotate, the second transmission shaft 30 can make the second rotating shaft 34 rotate through the first pulley 31, the synchronous belt 32 and the second pulley 33, the outer walls of the second rotating shaft 34 and the second transmission shaft 30 are both provided with cleaning cloth cylinders 35, and the cleaning cloth cylinders 35 on both sides are arranged in opposite directions, so that the cleaning cloth of one cleaning cloth cylinder 35 can be wound up while the cleaning cloth of the other cleaning cloth cylinder 35 is released. After the nozzle 24 slides over the surface of the cleaning cloth cylinder 35, the cleaning cloth cylinder 35 cleans the nozzle 24. The automatic replacement of the middle cleaning cloth can be realized by the release and winding of the cleaning cloth cylinder 35, which is convenient for the automatic cleaning of the nozzle 24 and improves the cleaning efficiency.

[0039] Please refer to the appendix Figure 9 , and further includes a controller, and the controller is electrically connected to the conductive slip ring 16, the temperature sensor 25 and the heater 26.

[0040] Specifically, the controller first presets the temperature, first controls the heating temperature of the first heating resistor 11 through the conductive slip ring 16, then receives the detection data of the temperature sensor 25, and then controls the heater 26 to heat the ink again according to the data of the temperature sensor 25, so that the temperature of the ink can be maintained within the required temperature range.

[0041] Please refer to the appendix Figure 9 , a method for a digital printing device based on intelligent temperature control includes the following steps: Preparation stage: Place the paper to be printed on the fixing frame 1 and check whether each part is working properly: First, start the first motor 3 to stir the ink in the ink tank 2 through the stirring rod 5 to make the ink components uniform: Start the ink delivery pump 18 to drive the ink to flow. The controller presets the heating temperature of the first heating resistor 11. The ink is first preheated through the first heating resistor 11, and at the same time, the filter plate 9 filters the ink. During the filtering, the scraper 12 rotates on the outer wall of the filter plate 9 to crush the accumulated ink blocks; The ink flows through the ink delivery pump 18 to the connecting pipe 19. The temperature sensor 25 first detects its temperature, and then the controller controls the heater 26 to heat the ink again. Subsequently, the ink is ejected through the nozzle 24. When spraying the ink, the motor two 20 and the lead screw 21 drive the sliding frame 23 to slide, and the ink can be sprayed back and forth. After printing is completed, the sliding frame 23 drives the nozzle 24 to slide towards the cleaning cloth cylinder 35. The cleaning cloth cylinder 35 cleans the nozzle 24 and absorbs the ink inside the nozzle 24 at the same time. Starting the motor three 29 can make the cleaning cloth slide, thereby updating the cleaning cloth.

[0042] Specifically, the operator first neatly places the paper to be printed on the fixing frame 1, ensures that the paper is flat and in the correct position, and firmly fixes the paper through the limiting device and pressing mechanism of the fixing frame 1. Then, a comprehensive and detailed inspection is carried out on each part of the equipment to make full preparations for the subsequent printing work. The motor one 3 drives the stirring rod 5 to start rotating in the ink tank 2 to avoid affecting the printing quality due to uneven ink composition. Start the ink delivery pump 18. While the ink starts to flow, the controller presets a suitable heating temperature, which is set according to the characteristics of the ink and the requirements of the printing process. The ink is first preheated through the electric resistance one 11, and the filter plate 9 filters the ink. The filter plate 9 can effectively block impurities, particles and coagulated ink blocks in the ink. At the same time, the scraper 12 rotates on the outer wall of the filter plate 9 to ensure the smooth filtration of the ink. The preheated and filtered ink flows through the ink delivery pump 18 to the connecting pipe 19. During the process of the ink flowing through the connecting pipe 19, the temperature sensor 25 continuously detects the temperature of the ink and transmits the detected temperature signal to the controller. The controller automatically controls the working state of the heater 26 according to the preset optimal printing temperature, and reheats or adjusts the ink to ensure that the ink has good fluidity and adhesion, and is ejected through the nozzle 24. The nozzle 24 can spray the ink evenly on the paper surface as it moves with the sliding frame 23. After the printing work is completed, the motor two 20 and the lead screw 21 move again, driving the sliding frame 23 to slide the nozzle 24 towards the cleaning cloth cylinder 35. The cleaning cloth of the cleaning cloth cylinder 35 is in close contact with the nozzle of the nozzle 24. Driven by the sliding frame 23, the cleaning cloth wipes the surface of the nozzle 24, removing the residual ink and impurities. At the same time, the cleaning cloth has good adsorption performance and can absorb the residual ink inside the nozzle 24 to prevent the ink from drying up and blocking the nozzle 24. To ensure the cleaning effect, the used part of the cleaning cloth is wound to one side of the cloth cylinder, and at the same time, a new part of the cleaning cloth is unfolded and covers the position where the nozzle 24 is cleaned, thereby realizing the automatic update of the cleaning cloth and making preparations for the cleaning work after the next printing is completed.

[0043] Although embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. Digital printing device based on intelligent temperature control, including a fixing frame (1), characterized in that, An ink tank (2) is provided on the inner top wall of the fixing frame (1). A first motor (3) is fixedly connected to the outer wall of the ink tank (2). A first transmission shaft (4) is fixedly provided at the output end of the first motor (3). The outer wall of the first transmission shaft (4) is rotatably connected inside the ink tank (2). A stirring rod (5) is fixedly connected to the outer wall of the first transmission shaft (4). A transmission mechanism (6) is provided on the outer wall of the first transmission shaft (4). The transmission mechanism (6) is connected to a first rotating shaft (7). A plurality of discharge pipes (8) are provided on the outer wall of the fixing frame (1). A filter plate (9) is installed inside the discharge pipe (8). The outer wall of the first rotating shaft (7) is rotatably connected inside the filter plate (9). A power transmission sleeve (10) is fixedly connected to the outer wall of the first rotating shaft (7). A first electric heating resistor (11) and a scraper (12) are fixedly connected to the outer wall of the power transmission sleeve (10). The outer wall of the scraper (12) is rotatably connected to the outer wall of the filter plate (9). A feeding assembly is provided on the outer wall of the ink tank (2).

2. The digital printing device based on intelligent temperature control according to claim 1, wherein The feeding assembly includes a feeding port (13). The outer wall of the feeding port (13) is provided on the outer wall of the ink tank (2). A lid (14) is snap-connected to the outer wall of the feeding port (13).

3. The digital printing device based on intelligent temperature control according to claim 1, wherein The transmission mechanism (6) includes a protection box (603). The outer wall of the protection box (603) is fixedly connected inside the ink tank (2). The inner part of the protection box (603) is rotatably connected to the outer wall of the first transmission shaft (4). A first bevel gear (601) is fixedly connected to the outer wall of the first transmission shaft (4). The tooth end of the first bevel gear (601) is meshed with a second bevel gear (602). The outer walls of the second bevel gear (602) and the first bevel gear (601) are both rotatably connected inside the protection box (603). The outer wall of the second bevel gear (602) is fixedly connected to the outer wall of the first rotating shaft (7).

4. The digital printing device based on intelligent temperature control according to claim 1, characterized in that, The outer wall of the power transmission sleeve (10) is rotatably connected to a housing (15). The outer wall of the housing (15) is fixedly connected inside the discharge pipe (8). A conductive slip ring (16) is provided inside the housing (15). The conductive slip ring (16) is electrically connected to the power transmission sleeve (10).

5. The digital printing device based on intelligent temperature control according to claim 1, wherein, A first support (17) is fixedly connected to the lower surface of the fixing frame (1). An ink delivery pump (18) is fixedly connected inside the first support (17). The input end of the ink delivery pump (18) is fixedly connected to the discharge pipe (8). The output end of the ink delivery pump (18) is fixedly connected to a connecting pipe (19).

6. The digital printing device based on intelligent temperature control according to claim 5, characterized in that, A second motor (20) is fixedly connected to the inner top wall of the fixing frame (1). A lead screw (21) is fixedly provided at the output end of the second motor (20). A sliding frame (23) is threadedly connected to the outer wall of the lead screw (21). A slide bar (22) is slidably connected inside the sliding frame (23). The outer wall of the slide bar (22) is fixedly connected to the outer wall of the fixing frame (1). A spray head (24) is fixedly connected to the upper surface of the sliding frame (23). The spray head (24) is connected to the connecting pipe (19).

7. The digital printing device based on intelligent temperature control according to claim 6, wherein, A temperature sensor (25) is installed on the outer wall of the sliding frame (23). The outer wall of the temperature sensor (25) is arranged inside the connecting pipe (19). A heater (26) is arranged on the outer wall of the sliding frame (23). An electric resistance two (27) is arranged on the outer wall of the heater (26). The outer wall of the electric resistance two (27) is arranged inside the connecting pipe (19).

8. The digital printing device based on intelligent temperature control according to claim 1, wherein, An installation plate (28) is arranged on the lower surface of the fixed frame (1). A motor three (29) is fixedly connected to the outer wall of the installation plate (28). A transmission shaft two (30) is fixedly arranged at the output end of the motor three (29). A pulley one (31) is fixedly connected to the outer wall of the transmission shaft two (30). A synchronous belt (32) is connected to the outer wall of the pulley one (31). The synchronous belt (32) is connected to a pulley two (33). A rotating shaft two (34) is fixedly connected inside the pulley two (33). The outer walls of the rotating shaft two (34) and the transmission shaft two (30) are both rotatably connected to the outer wall of the fixed frame (1). Cleaning cloth cylinders (35) are arranged on the outer walls of the rotating shaft two (34) and the transmission shaft two (30). Guide rollers (36) are slidably connected to the outer walls of the cleaning cloth cylinders (35). The guide rollers (36) are arranged on the outer wall of the fixed frame (1).

9. The digital printing device based on intelligent temperature control according to claim 7, characterized in that, It also includes a controller, and the controller is electrically connected to the conductive slip ring (16), the temperature sensor (25), and the heater (26).

10. The method of a digital printing device based on intelligent temperature control according to any one of claims 1-9, characterized in that, It includes the following steps: Preparation stage: Place the paper to be printed on the fixed frame (1) and check whether all parts are working properly: First, start the motor one (3) to stir the ink in the ink tank (2) through the stirring rod (5) to make the ink components uniform: Start the ink delivery pump (18) to drive the ink to flow. The controller presets the heating temperature of the electric resistance one (11). The ink is first preheated through the electric resistance one (11). At the same time, the filter plate (9) filters the ink. During the filtering, the scraper (12) rotates on the outer wall of the filter plate (9) to crush the accumulated ink blocks; The ink flows through the ink delivery pump (18) to the connecting pipe (19). The temperature sensor (25) first detects its temperature, and then the controller controls the heater (26) to heat the ink again; Subsequently, the ink is sprayed out through the nozzle (24). When spraying the ink, the sliding frame (23) is driven to slide by the motor two (20) and the lead screw (21), and the ink can be sprayed back and forth; After printing is completed, the sliding frame (23) drives the nozzle (24) to slide towards the cleaning cloth cylinder (35). The cleaning cloth cylinder (35) cleans the nozzle (24) and absorbs the ink inside the nozzle (24) at the same time. Starting the motor three (29) can make the cleaning cloth slide, thereby updating the cleaning cloth.

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