Paper printing device with drying function

Abstract

The present invention discloses a paper printing device with a drying function, and relates to the technical field of printing devices. The present invention comprises a fully enclosed shell, an unwinding machine is arranged inside one end of the fully enclosed shell, a plurality of evenly distributed monochrome printing boxes are fixedly installed inside the fully enclosed shell, and a printing roller group, a heating roller and a pressure roller are driven and installed inside the monochrome printing boxes, the heating roller and the pressure roller are both located on the side of the printing roller group away from the unwinding machine, and the heating roller is located on the top of the pressure roller. The present invention sets a pretreatment component, so that the precooling roller and the preheating roller respectively precool or preheat the printing paper, if the ambient temperature is high, the precooling roller cools the printing paper, if the ambient temperature is low, the preheating roller heats the printing paper, so that the printing paper can maintain a relatively constant and suitable temperature before each printing, reducing the influence of the ambient temperature on the printing quality.

Description

Technical Field

[0001] The invention relates to the technical field of printing devices, and in particular to a paper printing device with a drying function. Background Art

[0002] A printing press is a machine for printing text and images. Modern printing presses are generally composed of mechanisms such as plate loading, inking, embossing, and paper feeding (including folding). Its working principle is to print the images and texts on the printing plate on the printing material through the transfer of ink or toner. That is, by transferring specific patterns and texts to paper through ink, batch processing of patterns and texts can be achieved. When printing, heating or ventilation is often used to accelerate the drying of the ink on the paper.

[0003] When existing printing presses use heaters or fans to accelerate the drying of printed paper, it is difficult to take into account the influence of environmental factors. Factors such as indoor temperature, humidity, air quality, and ventilation volume will obviously affect the drying of ink. The current printing presses are unable to change the temperature of the printing plate or printing roller according to the on-site environmental conditions, which causes the printing ink to lose some wet strength or not dry enough, thereby causing the printed ink color to become lighter or the ink marks to not dry, directly resulting in poor printing quality. For this reason, a paper printing device with a drying function is proposed. Summary of the invention

[0004] The purpose of the present invention is to solve the problem that the current printing machine cannot change the temperature of the printing plate or the printing roller according to the environmental conditions on site, which causes the printing ink to lose part of its wet strength or not dry sufficiently, and then makes the printing ink color lighter or the ink mark not dry, which directly leads to poor printing quality. The present invention provides a paper printing device with a drying function.

[0005] In order to achieve the above-mentioned purpose, the present invention specifically adopts the following technical solutions:

[0006] A paper printing device with a drying function comprises a fully enclosed shell, an unwinding machine is arranged inside one end of the fully enclosed shell, a plurality of evenly distributed single-color printing boxes are fixedly installed inside the fully enclosed shell, a printing roller group, a heating roller and a pressure roller are driven and installed inside the single-color printing boxes, the heating roller and the pressure roller are both located on the side of the printing roller group away from the unwinding machine, the heating roller is located on the top of the pressure roller, a winding box is fixedly installed at one end of the fully enclosed shell away from the unwinding machine, the winding box is connected to the interior of the fully enclosed shell, a flap is rotatably installed on the top of the winding box, a winding machine is fixedly installed inside the winding box, the interior of the unwinding machine winds up the printing paper, one end of the printing paper passes through the plurality of printing roller groups in sequence and is wound on the winding machine, the heating roller and the pressure roller located at the same place are respectively located on the top and bottom of the printing paper, and a pretreatment component is arranged inside the fully enclosed shell;

[0007] The pretreatment component is used to preheat and precool the printing paper before printing, and the pretreatment component is located between the unwinder and the plurality of single-color printing boxes;

[0008] The pretreatment component includes a precooling roller and a preheating roller which are driven and installed inside the all-inclusive shell, the precooling roller and the preheating roller are both located between the unwinding machine and the plurality of single-color printing boxes, the precooling roller is located on the top of the preheating roller, the printing paper is located between the precooling roller and the preheating roller, a cold water tank is fixedly installed inside the all-inclusive shell, a circulating water pump is fixedly installed on one side of the cold water tank, the water inlet end of the circulating water pump is connected to the inside of the cold water tank, and circulating water pipes are rotatably installed at both ends of the precooling roller, the bottom end of one of the circulating water pipes is connected to the water outlet end of the circulating water pump, and the bottom end of the other circulating water pipe is connected to the inside of the cold water tank;

[0009] A colorimetric component for comparing the color of the printed paper after printing is arranged inside the all-inclusive shell;

[0010] The colorimetric component includes a product dark box and a colorimetric card dark box fixedly installed inside the all-inclusive shell, the product dark box and the colorimetric card dark box are both located between the multiple single-color printing boxes and the winder, the colorimetric card dark box is fixedly installed at the bottom of the product dark box, both sides of the product dark box are provided with entry and exit holes, the printed paper is located inside the two entry and exit holes, a colorimetric card placement tray is fixedly installed inside the colorimetric card dark box, first visual recognition instruments are fixedly installed on the top inner walls of the product dark box and the colorimetric card dark box, and the two first visual recognition instruments face the printed paper and the colorimetric card placement tray respectively.

[0011] Furthermore, a finished product dark box is fixedly installed at the bottom of the colorimetric card dark box, a finished product placement tray is fixedly installed inside the finished product dark box, and a second visual identifier is fixedly installed on the top inner wall of the finished product dark box, and the second visual identifier faces the finished product placement tray.

[0012] Furthermore, simulation holes are provided on both sides of the colorimetric card dark box and the finished product dark box, and the simulation holes are consistent in shape and position with the inlet and outlet holes.

[0013] Furthermore, anti-interference lighting lamps are fixedly installed on the inner walls of both sides of the product dark box, the colorimetric card dark box and the finished product dark box.

[0014] Furthermore, a drying fan is fixedly installed on one side of the full-enclosed shell, an air outlet of the drying fan is connected to the interior of the full-enclosed shell, and the drying fan is located between the plurality of single-color printing boxes and the production dark box.

[0015] Furthermore, a guide air outlet duct is fixedly installed at the air outlet end of the drying fan, and the guide air outlet duct extends to the interior of the full-enclosed shell, and a guide exhaust duct is fixedly installed on the other side of the full-enclosed shell, and the guide air outlet duct and the guide exhaust duct are both located on the top of the printing paper and parallel to the printing paper, and a dustproof flap is provided at one end of the guide exhaust duct located outside the full-enclosed shell, and the top side edge of the dustproof flap is rotatably installed on the top side edge of the guide exhaust duct.

[0016] Furthermore, an air inlet heat conductive block is fixedly installed at the air inlet end of the drying fan, a plurality of evenly distributed honeycomb air holes are opened on the side wall of the air inlet heat conductive block, the honeycomb air holes are all connected to the air inlet end of the drying fan, and a heater is fixedly installed on the air inlet heat conductive block.

[0017] Furthermore, a mixing water tank and a plurality of evenly distributed temperature regulating water tanks are fixedly installed inside the cold water tank, the temperature regulating water tanks are all connected to the inside of the mixing water tank, and the water inlet end of the circulating water pump is connected to the inside of the mixing water tank.

[0018] The beneficial effects of the present invention are as follows:

[0019] 1. The present invention sets a pretreatment component so that the printing paper first passes through a precooling roller and a preheating roller, so that the precooling roller and the preheating roller respectively precool or preheat the printing paper. If the ambient temperature is high, the precooling roller cools the printing paper, and if the ambient temperature is low, the preheating roller heats the printing paper, so that the printing paper can maintain a relatively constant and suitable temperature before each printing, reducing the influence of the ambient temperature on the printing quality;

[0020] 2. The present invention provides a colorimetric component so that the printed paper will stay briefly in the production dark box. The first visual recognition device inside the production dark box and the colorimetric card dark box will take pictures of the printed paper and the colorimetric card respectively for comparison. If color difference occurs, the temperature of the pre-cooling roller, the circulating water pipe and the heating roller can be adjusted to make the printed color of the printed paper gradually approach the colorimetric card, thereby adjusting the printing temperature and ensuring the printing quality.

[0021] 3. The present invention sets a finished product dark box, so that the finished product placement tray in the finished product dark box is filled with finished product printing paper. The second visual recognition device in the finished product dark box will take a picture of the finished product printing paper, and then compare it with the printing paper of this printing to determine whether the text, pattern, color distribution, depth and other indicators are consistent or similar. If there is a deviation, the temperature of each component of the paper printing device is adjusted to restore the standard printing quality;

[0022] 4. The present invention sets the simulation hole so that the printing paper needs to pass through the product dark box with the help of the front and rear inlet and outlet holes. The two inlet and outlet holes will inevitably cause slight light leakage into the inside of the product dark box. The colorimetric card dark box and the finished product dark box are also provided with simulation holes with the same shape and position as the inlet and outlet holes, which can ensure that the lighting conditions inside the colorimetric card dark box and the finished product dark box are similar to those of the product dark box, thereby reducing the error caused by light problems during colorimetry;

[0023] 5. The present invention provides a drying fan, so that after the printing paper has been subjected to multiple single-color printing and multiple hot pressing, the printing area on the upper part of the printing paper has become stable, but is still not completely dry. At this time, the printing paper will pass the position of the drying fan, and the drying fan will blow air to accelerate the air flow on the top of the printing paper, so that the printing area on the printing paper is quickly dried, ensuring the printing quality while preventing the undried ink from affecting the contrast color result;

[0024] 6. The present invention sets a guide exhaust duct so that the wind blown by the drying fan will blow over the top of the printing paper under the guidance of the guide exhaust duct, and will not blow directly on the surface of the printing paper, thereby avoiding the problem of undried ink on the printing paper being blown away. When the drying fan stops running, the dust-proof flap will sag under the action of gravity, closing the outer end of the guide exhaust duct, thereby reducing the entry of dust;

[0025] 7. The present invention provides an air intake heat conduction block, so that when the drying fan blows air, the air enters the drying fan through the honeycomb air holes on the air intake heat conduction block, the heater heats the air intake heat conduction block, and the honeycomb air holes can increase the contact area between the airflow and the air intake heat conduction block, thereby accelerating the temperature rise of the airflow, so that the airflow blown from the guide air outlet duct to the inside of the full-enclosed shell is kept above a certain temperature, thereby accelerating the drying of the printing ink on the surface of the printing paper;

[0026] 8. The present invention arranges a mixing water tank so that cooling water of different temperatures is stored in real time inside a plurality of temperature-adjusting water tanks. When the temperature of the cooling water inside the pre-cooling roller needs to be adjusted, each temperature-adjusting water tank will respectively inject cooling water of different capacities into the mixing water tank, so that the mixing water tank can quickly obtain cooling water within a specified temperature range, so that the pre-cooling roller can quickly reach the specified temperature, thereby reducing the waiting time for adjustment. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0028] Figure 2 This is a schematic diagram of the internal three-dimensional structure of the all-inclusive housing of the present invention;

[0029] Figure 3 It is a schematic diagram of the internal three-dimensional structure of the monochrome printing box of the present invention;

[0030] Figure 4 It is a schematic diagram of the three-dimensional structure of the pre-cooling roller and the pre-heating roller of the present invention;

[0031] Figure 5 It is a schematic diagram of the three-dimensional structure of the colorimetric component of the present invention;

[0032] Figure 6 It is a schematic diagram of the internal three-dimensional structure of the product dark box, the colorimetric card dark box and the finished product dark box of the present invention;

[0033] Figure 7 It is a schematic diagram of the three-dimensional structure of the drying fan and the air intake heat conduction block of the present invention;

[0034] Figure 8 It is a schematic diagram of the three-dimensional structure of the guide exhaust duct and the dustproof flap of the present invention;

[0035] Figure numerals: 1. All-inclusive shell; 2. Unwinder; 3. Monochrome printing box; 4. Printing roller group; 5. Heating roller; 6. Pressure roller; 7. Winding box; 8. Flap; 9. Winder; 10. Printing paper; 11. Pre-cooling roller; 12. Cold water tank; 13. Circulating water pump; 14. Circulating water pipe; 15. Preheating roller; 16. Drying fan; 17. Product dark box; 18. Colorimetric card dark box; 19. Inlet and outlet holes; 20. First visual recognition instrument; 21. Colorimetric card placement tray; 22. Finished product dark box; 23. Finished product placement tray; 24. Anti-interference lighting; 25. Simulation hole; 26. Guide outlet duct; 27. Guide exhaust duct; 28. Dust-proof flap; 29. ​​Inlet heat conduction block; 30. Honeycomb air holes; 31. Heater; 32. Mixing water tank; 33. Temperature control water tank; 34. Second visual recognition instrument. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0037] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings. In addition, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0039] In the description of the embodiments of the present invention, it should be noted that the terms "inside", "outside", "upper", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the inventive product is usually placed when used. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0040] like Figures 1 to 8 As shown, a paper printing device with a drying function comprises a fully enclosed housing 1, and an unwinding machine 2 is arranged inside one end of the fully enclosed housing 1. Figure 2 As shown, a plurality of evenly distributed single-color printing boxes 3 are fixedly installed inside the all-inclusive housing 1, such as Figure 3 As shown, the interior of the monochrome printing box 3 is driven to install a printing roller group 4, a heating roller 5 and a pressure roller 6. The heating roller 5 and the pressure roller 6 are both located on the side of the printing roller group 4 away from the unwinding machine 2, and the heating roller 5 is located on the top of the pressure roller 6. Figure 1 As shown, a winding box 7 is fixedly installed at one end of the full-enclosed shell 1 away from the unwinding machine 2, and the winding box 7 is connected to the interior of the full-enclosed shell 1. A flip cover 8 is rotatably installed on the top of the winding box 7. In this embodiment, the flip cover 8 is made of a non-transparent material, such as Figure 2 As shown, a reel 9 is fixedly installed inside the reel box 7, and printing paper 10 is reeled inside the unwinder 2. In this embodiment, the printing device provided by this scheme adopts a rotary printing mechanism, and the printing paper 10 placed in the unwinder 2 is a printing roll paper, such as Figure 3 As shown, one end of the printing paper 10 passes through a plurality of printing roller groups 4 in sequence and is wound on a winder 9, a heating roller 5 and a pressure roller 6 located at the same place are respectively located at the top and bottom of the printing paper 10, and a pretreatment component is arranged inside the all-inclusive housing 1; specifically, when the paper printing device is in use, the winder 9 winds up the printing paper 10, so that the printing paper 10 passes through a plurality of monochrome printing boxes 3 in sequence, and the printing is gradually completed under the monochrome printing of the plurality of printing roller groups 4, and the printing paper 10 is preliminarily dried by using the plurality of heating rollers 5 and the pressure rollers 6;

[0041] The pretreatment component is used to preheat and precool the printing paper 10 before printing, and the pretreatment component is located between the unwinder 2 and the plurality of single-color printing boxes 3;

[0042] like Figure 2 , Figure 4 As shown, the pretreatment component includes a precooling roller 11 and a preheating roller 15 which are driven and installed inside the full-enclosed shell 1. The precooling roller 11 and the preheating roller 15 are both located between the unwinding machine 2 and the multiple monochrome printing boxes 3. The precooling roller 11 is located on the top of the preheating roller 15, and the printing paper 10 is located between the precooling roller 11 and the preheating roller 15. A cold water tank 12 is fixedly installed inside the full-enclosed shell 1, and a circulating water pump 13 is fixedly installed on one side of the cold water tank 12. The water inlet end of the circulating water pump 13 is connected to the inside of the cold water tank 12. Circulating water pipes 14 are rotatably installed at both ends of the precooling roller 11. In this embodiment, a circulating water circuit is provided inside the precooling roller 11, and the two ends of the water circuit are respectively connected to two circulating water pipes 14, wherein the bottom end of one circulating water pipe 14 is connected to the water outlet end of the circulating water pump 13, and the other circulating water pipe 1 The bottom end of the printing paper 10 is connected to the inside of the cold water tank 12; specifically, by setting the pretreatment component, before the printing paper 10 is printed by each printing roller group 4, it will first pass through the pre-cooling roller 11 and the pre-heating roller 15, so that the pre-cooling roller 11 and the pre-heating roller 15 respectively pre-cool or pre-heat the printing paper 10. If the ambient temperature is high, the circulating water pump 13 will draw cooling water from the cold water tank 12 and transport it to the pre-cooling roller 11 through the circulating water pipe 14 for circulation, thereby cooling the printing paper 10 at the bottom, so that the printing paper 10 is cooled before printing. If the ambient temperature is low, the pre-heating roller 15 will heat the top printing paper 10 to heat the printing paper 10, so that the printing paper 10 can maintain a relatively constant and suitable temperature before each printing, thereby reducing the influence of the ambient temperature on the printing quality;

[0043] A colorimetric component for comparing the color of the printed paper 10 is disposed inside the all-inclusive housing 1;

[0044] like Figure 2 , Figure 5As shown, the colorimetric assembly includes a product dark box 17 and a colorimetric card dark box 18 fixedly installed inside the all-inclusive housing 1. The product dark box 17 and the colorimetric card dark box 18 are both located between the plurality of monochrome printing boxes 3 and the winder 9. The colorimetric card dark box 18 is fixedly installed at the bottom of the product dark box 17. Both sides of the product dark box 17 are provided with inlet and outlet holes 19. The printing paper 10 is located inside the two inlet and outlet holes 19. Figure 6 As shown, a colorimetric card placement tray 21 is fixedly installed inside the colorimetric card dark box 18, and first visual recognition instruments 20 are fixedly installed on the top inner walls of the output dark box 17 and the colorimetric card dark box 18. The two first visual recognition instruments 20 face the printing paper 10 and the colorimetric card placement tray 21 respectively. In this embodiment, a colorimetric card under a standard printing process is placed in the colorimetric card placement tray 21; specifically, by setting a colorimetric component, when the same batch of printing papers 10 are printed for the first time, the first printing area on the printing paper 10 will enter the output dark box 17. The paper 10 is placed in the product dark box 17 and stays for a short time. At this time, the standard colorimetric card for this printing is placed in the colorimetric card placement tray 21. The first visual recognition device 20 inside the product dark box 17 and the colorimetric card dark box 18 respectively takes pictures of the printing paper 10 and the colorimetric card for comparison. If color difference occurs, the printing problem of the paper printing device can be checked, and the temperatures of the pre-cooling roller 11, the circulating water pipe 14 and the heating roller 5 can be adjusted to make the printed color of the printing paper 10 gradually approach the colorimetric card, so as to adjust the printing temperature and ensure the printing quality.

[0045] like Figure 5 As shown, a finished product dark box 22 is fixedly installed at the bottom of the colorimetric card dark box 18. Figure 6 As shown, a finished product placement tray 23 is fixedly installed inside the finished product dark box 22, and a second visual recognition device 34 is fixedly installed on the top inner wall of the finished product dark box 22. The second visual recognition device 34 faces the finished product placement tray 23. In this embodiment, the finished product placement tray 23 is placed with finished printed paper 10 cut under the standard printing process; specifically, by setting the finished product dark box 22, the finished product placement tray 23 in the finished product dark box 22 is placed with finished printed paper 10. The second visual recognition device 34 in the finished product dark box 22 will take a picture of the finished printed paper 10, and then compare it with the printed paper 10 printed this time to determine whether the text, pattern, color distribution, depth and other indicators are consistent or similar. If there is a deviation, the temperature of each component of the paper printing device is adjusted to restore the standard printing quality.

[0046] like Figure 5As shown, both sides of the colorimetric card dark box 18 and the finished product dark box 22 are provided with simulation holes 25, and the simulation holes 25 are consistent with the shape and position of the inlet and outlet holes 19; specifically, by providing the simulation holes 25, the printing paper 10 needs to rely on the front and rear inlet and outlet holes 19 to pass through the product dark box 17, and the two inlet and outlet holes 19 will inevitably have the problem of slight light leakage into the product dark box 17. Simulation holes 25 that are consistent with the shape and position of the inlet and outlet holes 19 are also provided in the colorimetric card dark box 18 and the finished product dark box 22, which can ensure that the lighting conditions inside the colorimetric card dark box 18 and the finished product dark box 22 are similar to those of the product dark box 17, thereby reducing the error caused by light problems during colorimetry.

[0047] like Figure 6 As shown, anti-interference lamps 24 are fixedly installed on the inner walls on both sides of the product dark box 17, the colorimetric card dark box 18 and the finished product dark box 22; specifically, by setting the anti-interference lamps 24, the anti-interference lamps 24 on both sides can illuminate the interior of the product dark box 17, the colorimetric card dark box 18 and the finished product dark box 22, thereby reducing the impact of external light leakage on the internal environment and further reducing light errors.

[0048] like Figure 1 As shown, a drying fan 16 is fixedly installed on one side of the full-enclosed housing 1, and the air outlet of the drying fan 16 is connected to the interior of the full-enclosed housing 1, as shown in FIG. Figure 2 As shown, the drying fan 16 is located between the multiple monochrome printing boxes 3 and the production dark box 17; specifically, by setting the drying fan 16, after the printing paper 10 has been subjected to multiple monochrome printings and multiple hot pressings, the printing area on the upper part has become stable, but is still not completely dry. At this time, the printing paper 10 will pass through the position of the drying fan 16, and the drying fan 16 will blow air to accelerate the air flow on the top of the printing paper 10, so that the printing area on the printing paper 10 is quickly dried, ensuring the printing quality while preventing the undried ink from affecting the contrast color result.

[0049] like Figure 7 As shown, the air outlet end of the drying fan 16 is fixedly installed with a guide air outlet pipe 26, and the guide air outlet pipe 26 extends to the interior of the full-enclosed housing 1, as shown in FIG. Figure 8As shown, a guide exhaust duct 27 is fixedly installed on the other side of the full-enclosed shell 1, and the guide outlet duct 26 and the guide exhaust duct 27 are both located on the top of the printing paper 10 and parallel to the printing paper 10. A dust-proof flap 28 is provided at one end of the guide exhaust duct 27 located outside the full-enclosed shell 1, and the top side of the dust-proof flap 28 is rotatably installed on the top side of the guide exhaust duct 27; specifically, the guide exhaust duct 27 is provided when passing through, so that the wind blown by the drying fan 16 will be on the guide outlet duct 26. Under the guiding action, the dust is blown over the top of the printing paper 10 and discharged through the guiding exhaust pipe 27, but will not be blown directly on the surface of the printing paper 10, thereby avoiding the problem of undried ink on the printing paper 10 being blown away. When the drying fan 16 blows air, the dust-proof flap 28 at the outer end of the guiding exhaust pipe 27 will be blown to facilitate air flow. When the drying fan 16 stops running, the dust-proof flap 28 will sag under the action of gravity, closing the outer end of the guiding exhaust pipe 27, thereby reducing the entry of dust.

[0050] like Figure 7 As shown, an air inlet heat conductive block 29 is fixedly installed at the air inlet end of the drying fan 16, and a plurality of evenly distributed honeycomb air holes 30 are opened on the side wall of the air inlet heat conductive block 29. In the present embodiment, dustproof filters are arranged inside the honeycomb air holes 30, and the honeycomb air holes 30 are all connected with the air inlet end of the drying fan 16, and a heater 31 is fixedly installed on the air inlet heat conductive block 29. Specifically, by arranging the air inlet heat conductive block 29, when the drying fan 16 blows air, the air in the environment will enter the drying fan 16 through the honeycomb air holes 30 on the air inlet heat conductive block 29, and the heater 31 on the air inlet heat conductive block 29 will heat the air inlet heat conductive block 29, and the honeycomb air holes 30 can increase the contact area between the airflow and the air inlet heat conductive block 29, thereby accelerating the heating speed of the airflow, so that the airflow blown out from the guide air outlet duct 26 to the inside of the all-inclusive shell 1 is kept above a certain temperature, thereby accelerating the drying of the printing ink on the surface of the printing paper 10.

[0051] like Figure 4As shown, a mixing water tank 32 and a plurality of uniformly distributed temperature-adjusting water tanks 33 are fixedly installed inside the cold water tank 12, the temperature-adjusting water tanks 33 are all connected to the interior of the mixing water tank 32, and the water inlet end of the circulating water pump 13 is connected to the interior of the mixing water tank 32. In this embodiment, a heating device is arranged inside the temperature-adjusting water tank 33, and each temperature-adjusting water tank 33 is connected to the mixing water tank 32 through a double circulation pipe. A micro water pump is used as a power source and controlled by an electromagnetic valve to ensure that the cooling water circulates back and forth between the temperature-adjusting water tank 33, the mixing water tank 32 and the pre-cooling roller 11; specifically, by arranging the mixing water tank 32, cooling water of different temperatures is stored in real time inside the plurality of temperature-adjusting water tanks 33. When the temperature of the cooling water inside the pre-cooling roller 11 needs to be adjusted, each temperature-adjusting water tank 33 will respectively inject cooling water of different capacities into the mixing water tank 32, so that the mixing water tank 32 can quickly obtain cooling water within a specified temperature range, so that the pre-cooling roller 11 can quickly reach a specified temperature, thereby reducing the waiting time for adjustment.

[0052] In summary: when the paper printing device is in use, the winder 9 winds up the printing paper 10, so that the printing paper 10 passes through multiple monochrome printing boxes 3 in sequence, and gradually completes printing under the monochrome printing of multiple printing roller groups 4, and uses multiple groups of heating rollers 5 and pressure rollers 6 to preliminarily dry the printing paper 10. By setting a pretreatment component, before the printing paper 10 is printed by each printing roller group 4, it will first pass between the precooling roller 11 and the preheating roller 15, so that the precooling roller 11 and the preheating roller 15 precool or preheat the printing paper 10 respectively. If the ambient temperature is high, the circulating water pump 13 will draw cooling water from the cold water tank 12 and transport it to the precooling roller 11 through the circulating water pipe 14 for circulation, thereby cooling the bottom of the printing paper 10, so that the printing paper 1 0 is cooled before printing. If the ambient temperature is low, the preheating roller 15 will heat the top printing paper 10 to heat up the printing paper 10, so that the printing paper 10 can maintain a relatively constant and suitable temperature before each printing, reducing the impact of the ambient temperature on the printing quality. By setting the colorimetric component, when the same batch of printing paper 10 is printed for the first time, the first printing area on the printing paper 10 will enter the production dark box 17 and stay for a short time. At this time, the standard colorimetric card for this printing is placed in the colorimetric card placement tray 21. The first visual recognition device 20 in the production dark box 17 and the colorimetric card dark box 18 respectively takes pictures of the printing paper 10 and the colorimetric card for comparison. If color difference occurs, the printing problem of the paper printing device can be investigated. The temperature of the pre-cooling roller 11, the circulating water pipe 14 and the heating roller 5 is adjusted to make the printing color of the printing paper 10 gradually approach the colorimetric card, so as to adjust the printing temperature and ensure the printing quality. The finished product dark box 22 is set so that the finished product placement tray 23 in the finished product dark box 22 is filled with the finished printing paper 10. The second visual recognition device 34 in the finished product dark box 22 will take a picture of the finished printing paper 10, and then compare it with the printing paper 10 printed this time to determine whether the text, pattern, color distribution, depth and other indicators are consistent or similar. If there is a deviation, the temperature of each component of the paper printing device is adjusted to restore the standard printing quality. The simulation hole 25 is set so that the printing paper 10 needs to pass through the front and rear two inlet and outlet holes 19. The product dark box 17, and the two inlet and outlet holes 19 will inevitably have the problem of slight light leakage into the product dark box 17. The colorimetric card dark box 18 and the finished product dark box 22 are also provided with simulation holes 25 with the same shape and position as the inlet and outlet holes 19, which can ensure that the lighting conditions inside the colorimetric card dark box 18 and the finished product dark box 22 are similar to those of the product dark box 17, thereby reducing the error caused by light problems during colorimetry. By setting up anti-interference lighting lamps 24, the anti-interference lighting lamps 24 on both sides can illuminate the interior of the product dark box 17, the colorimetric card dark box 18 and the finished product dark box 22, thereby reducing the influence of external light leakage on the internal environment, and further reducing light errors. By setting up a drying fan 16, after the printing paper 10 has been subjected to multiple single-color printing and multiple hot pressing,The printing area on the upper part thereof has become stable but is still not completely dry. At this time, the printing paper 10 will pass through the position of the drying fan 16. The drying fan 16 will blow air to accelerate the air flow on the top of the printing paper 10, so that the printing area on the printing paper 10 can be dried quickly, ensuring the printing quality while preventing the undried ink from affecting the contrast color result. A guide exhaust pipe 27 is set during the passage, so that the air blown by the drying fan 16 will blow through the top of the printing paper 10 under the guidance of the guide exhaust pipe 26 and be discharged through the guide exhaust pipe 27, and will not be directly blown on the surface of the printing paper 10, thereby avoiding the problem of undried ink on the printing paper 10 being blown away. When the drying fan 16 blows air, the dust-proof flap 28 at the outer end of the guide exhaust pipe 27 will be blown to facilitate air flow. When the drying fan 16 stops running, the dust-proof flap 28 will droop under the action of gravity to close the outer end of the guide exhaust pipe 27, thereby reducing the entry of dust. By setting the air intake heat conduction block 29, when the drying fan 16 blows, the air in the environment will enter the drying fan 16 through the honeycomb air holes 30 on the air intake heat conduction block 29, and the heater 31 on the air intake heat conduction block 29 will heat the air intake heat conduction block 29, and the honeycomb air holes 30 can increase the contact area between the airflow and the air intake heat conduction block 29, thereby accelerating the temperature rise rate of the airflow, so that the airflow blown out from the guide air outlet duct 26 to the inside of the all-inclusive shell 1 is kept above a certain temperature, thereby accelerating the drying of the printing ink on the surface of the printing paper 10. By setting the mixing water tank 32, cooling water of different temperatures is stored in real time in multiple temperature-adjusting water tanks 33. When it is necessary to adjust the temperature of the cooling water in the pre-cooling roller 11, each temperature-adjusting water tank 33 will respectively inject cooling water of different capacities into the mixing water tank 32, so that the mixing water tank 32 can quickly obtain cooling water within the specified temperature range, so that the pre-cooling roller 11 can quickly reach the specified temperature, reducing the waiting time for adjustment.

[0053] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions only describe the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention. These changes and improvements fall within the scope of the present invention. The scope of protection claimed by the present invention is defined by the attached claims and their equivalents.

Claims

1. A paper printing device with a drying function, characterized in that: The invention comprises a fully enclosed shell (1), wherein an unwinding machine (2) is arranged inside one end of the fully enclosed shell (1), wherein a plurality of evenly distributed single-color printing boxes (3) are fixedly installed inside the fully enclosed shell (1), wherein a printing roller group (4), a heating roller (5) and a pressure roller (6) are driven and installed inside each of the single-color printing boxes (3), wherein the heating roller (5) and the pressure roller (6) are both located on a side of the printing roller group (4) away from the unwinding machine (2), the heating roller (5) is located on the top of the pressure roller (6), and a winding machine (2) is fixedly installed on one end of the fully enclosed shell (1) away from the unwinding machine (2). A winding box (7), the winding box (7) is connected to the interior of the all-inclusive shell (1), a flap (8) is rotatably mounted on the top of the winding box (7), a winding machine (9) is fixedly mounted inside the winding box (7), the printing paper (10) is wound inside the unwinding machine (2), one end of the printing paper (10) passes through the plurality of printing roller groups (4) in sequence and is wound on the winding machine (9), the heating roller (5) and the pressure roller (6) located at the same place are respectively located at the top and bottom of the printing paper (10), and a pre-treatment component is arranged inside the all-inclusive shell (1); The pretreatment component is used to preheat and precool the printing paper (10) before printing, and the pretreatment component is located between the unwinder (2) and the plurality of single-color printing boxes (3); The pretreatment assembly comprises a precooling roller (11) and a preheating roller (15) which are driven and installed inside the full-enclosed shell (1), wherein the precooling roller (11) and the preheating roller (15) are both located between the unwinding machine (2) and the plurality of single-color printing boxes (3), the precooling roller (11) is located on top of the preheating roller (15), the printing paper (10) is located between the precooling roller (11) and the preheating roller (15), and the interior of the full-enclosed shell (1) is fixedly installed. A cold water tank (12) is provided, a circulating water pump (13) is fixedly installed on one side of the cold water tank (12), a water inlet end of the circulating water pump (13) is connected to the inside of the cold water tank (12), and circulating water pipes (14) are rotatably installed at both ends of the pre-cooling roller (11), a bottom end of one of the circulating water pipes (14) is connected to the water outlet end of the circulating water pump (13), and a bottom end of the other circulating water pipe (14) is connected to the inside of the cold water tank (12); A colorimetric component for comparing the color of the printed paper (10) after printing is arranged inside the all-inclusive shell (1); The colorimetric component comprises a product dark box (17) and a colorimetric card dark box (18) fixedly mounted inside the all-inclusive housing (1); the product dark box (17) and the colorimetric card dark box (18) are both located between the plurality of single-color printing boxes (3) and the winder (9); the colorimetric card dark box (18) is fixedly mounted at the bottom of the product dark box (17); both sides of the product dark box (17) are provided with inlet and outlet holes (19); the printing paper (10) is located inside the two inlet and outlet holes (19); a colorimetric card placement tray (21) is fixedly mounted inside the colorimetric card dark box (18); first visual recognition instruments (20) are fixedly mounted on the top inner walls of the product dark box (17) and the colorimetric card dark box (18); the two first visual recognition instruments (20) face the printing paper (10) and the colorimetric card placement tray (21), respectively.

2. A paper printing device with drying function according to claim 1, characterized in that: A finished product dark box (22) is fixedly mounted on the bottom of the colorimetric card dark box (18), a finished product placement tray (23) is fixedly mounted inside the finished product dark box (22), and a second visual recognition instrument (34) is fixedly mounted on the top inner wall of the finished product dark box (22), the second visual recognition instrument (34) faces the finished product placement tray (23).

3. A paper printing device with drying function according to claim 2, characterized in that: Simulation holes (25) are provided on both sides of the colorimetric card dark box (18) and the finished product dark box (22), and the simulation holes (25) are consistent in shape and position with the inlet and outlet holes (19).

4. A paper printing device with drying function according to claim 2, characterized in that: Anti-interference lighting lamps (24) are fixedly mounted on the inner walls of both sides of the product dark box (17), the colorimetric card dark box (18) and the finished product dark box (22).

5. The paper printing device with drying function according to claim 1, characterized in that: A drying fan (16) is fixedly mounted on one side of the all-encompassing shell (1); an air outlet end of the drying fan (16) is connected to the interior of the all-encompassing shell (1); and the drying fan (16) is located between the plurality of single-color printing boxes (3) and the output black box (17).

6. A paper printing device with drying function according to claim 5, characterized in that: A guide air outlet pipe (26) is fixedly mounted on the air outlet end of the drying fan (16), and the guide air outlet pipe (26) extends to the interior of the fully enclosed shell (1). A guide exhaust pipe (27) is fixedly mounted on the other side of the fully enclosed shell (1). Both the guide air outlet pipe (26) and the guide exhaust pipe (27) are located on the top of the printing paper (10) and are parallel to the printing paper (10). A dustproof flap (28) is provided at one end of the guide exhaust pipe (27) located outside the fully enclosed shell (1), and the top side edge of the dustproof flap (28) is rotatably mounted on the top side edge of the guide exhaust pipe (27).

7. The paper printing device with drying function according to claim 5, characterized in that: An air intake heat conduction block (29) is fixedly mounted on the air intake end of the drying fan (16); a plurality of evenly distributed honeycomb air holes (30) are provided on the side wall of the air intake heat conduction block (29); the honeycomb air holes (30) are all connected to the air intake end of the drying fan (16); and a heater (31) is fixedly mounted on the air intake heat conduction block (29).

8. The paper printing device with drying function according to claim 1, characterized in that: A mixing water tank (32) and a plurality of evenly distributed temperature regulating water tanks (33) are fixedly installed inside the cold water tank (12); the temperature regulating water tanks (33) are all connected to the inside of the mixing water tank (32); and the water inlet end of the circulating water pump (13) is connected to the inside of the mixing water tank (32).

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