Paper printing device

Abstract

This application discloses a paper printing apparatus, including a conveyor belt, a lifting plate, a paper feeding assembly, an electrostatic adsorption assembly, a printing mechanism, and a cleaning assembly. A second support plate is provided on one side of a first support plate, and a first linear motion mechanism is embedded in the opposite surfaces of the two second support plates. The lifting plate is connected to the first linear motion mechanism. The paper feeding assembly is disposed on the second support plate, and the electrostatic adsorption assembly and the printing mechanism are sequentially disposed above the conveyor belt along the conveying direction. A separation assembly is provided between the two first support plates and is connected to the electrostatic adsorption assembly. The cleaning assembly is disposed on one of the first support plates and is used to clean the nozzles of the printing mechanism. Thus, by pre-adsorbing particulate matter on the paper surface, contaminants are effectively prevented from entering the printing area, protecting the nozzles and stabilizing printing quality. Internal unclogging and external wiping of the nozzles can be performed without disassembling the printing head, significantly improving overall printing efficiency.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of printing, in particular to a paper printing device. BACKGROUND

[0002] Inkjet printing technology is an important digital printing method, which has the advantages of high flexibility, strong adaptability and easy to realize variable data printing, and has been widely used in office printing, commercial printing, industrial marking and textile printing and many other fields. The basic principle is to drive the tiny ink droplets by the control device, and to accurately spray and deposit on the surface of the paper and other printing materials from the printing head nozzle, so as to form the text and graphics.

[0003] In the actual printing process, whether using a roll paper or a single sheet paper supply, the surface of the paper will often adhere or produce particle pollutants such as paper powder, fiber debris, environmental dust and other particle pollutants during production, storage and transportation and conveying. In the printing process, these pollutants are easy to be raised under the action of air flow, static electricity and other actions, which may be deposited on the surface of the printing head or interfere with the flight of the ink droplets, thereby causing nozzle blockage and unstable spraying, which will cause the printed matter to appear white line, text and graphics missing, uneven concentration and other defects, affecting the printing quality. In addition, the nozzle blockage needs to be disassembled and cleaned one by one, which further reduces the production efficiency. SUMMARY

[0004] The present application aims to at least solve one of the technical problems in the related art to some extent.

[0005] To this end, one object of the present application is to provide a paper printing device, which can effectively block the pollutants from entering the printing area by pre-adsorbing the particles on the surface of the paper, protect the nozzle and stabilize the printing quality; the nozzle can be internally dredged and externally wiped without disassembling the printing head, which significantly improves the overall printing efficiency.

[0006] To achieve the above-mentioned object, the first aspect of the present application provides a paper printing device, comprising a conveying belt, a lifting plate, a paper feeding assembly, an electrostatic adsorption assembly, a printing mechanism and a cleaning assembly, wherein the conveying belt is arranged between two first support plates, one side of the first support plate is provided with a second support plate, the opposite surfaces of the two second support plates are respectively embedded with a first linear motion mechanism, and the lifting plate is connected with the first linear motion mechanism; the paper feeding assembly is arranged on the second support plate and above the lifting plate, and the paper feeding assembly is used for single sheet feeding of paper; the electrostatic adsorption assembly and the printing mechanism are sequentially arranged above the conveying belt along the conveying direction; a separation assembly is arranged between the two first support plates, and the separation assembly is connected with the electrostatic adsorption assembly; the cleaning assembly is arranged on one of the first support plates, and the cleaning assembly is used for cleaning the nozzle of the printing mechanism.

[0007] In addition, the paper printing apparatus proposed in this application may also have the following additional technical features:

[0008] In one embodiment of this application, the electrostatic adsorption assembly includes an electrostatic generator, an adsorption roller, and two pressure rollers, wherein the electrostatic generator is mounted on the side wall of one of the first support plates; the adsorption roller and the two pressure rollers are rotatably disposed between the two first support plates, and the adsorption roller is connected to the electrostatic generator; the two pressure rollers are disposed on both sides of the adsorption roller and are in contact with the upper surface of the conveyor belt.

[0009] In one embodiment of this application, the separation assembly includes a collection box, a scraper, a support shaft, a first spring, and an adsorption cover. The two ends of the collection box are respectively connected to the corresponding first support plates. The support shaft is disposed inside the collection box. The scraper is obliquely disposed inside the collection box, with one end rotatably connected to the support shaft and the other end of the scraper abutting against the outer wall of the adsorption roller. The two ends of the first spring are respectively connected to the scraper and the inner wall of the collection box. The adsorption cover is disposed above the scraper, with its adsorption port aligned with the contact position between the scraper and the adsorption roller.

[0010] In one embodiment of this application, the printing mechanism includes a housing, a second linear motion mechanism, and a printing head, wherein the housing is mounted on the first support plate; the second linear motion mechanism is disposed inside the housing; and the printing head is disposed on the slide of the second linear motion mechanism.

[0011] In one embodiment of this application, the cleaning assembly includes a housing, multiple turntables, multiple cleaning sponges, and multiple cleaning needles. A groove is provided on the first support plate, and a first driving component is installed within the groove. The housing is disposed at the output end of the first driving component, and a partition is provided inside the housing to divide it into a first cavity and a second cavity arranged vertically. Multiple turntables are rotatably disposed within the first cavity. Multiple cleaning sponges are connected to their respective turntables. Multiple cleaning needles are disposed at the center of their respective turntables, and the cleaning needles correspond to the nozzles of the printing head.

[0012] In one embodiment of this application, a plurality of rotating shafts corresponding to the turntable are rotatably connected inside the second cavity, and each rotating shaft is provided with a gear; the bottom of the housing is provided with two third linear motion mechanisms, and a slide plate is connected to the slide of the third linear motion mechanism, and the two side walls of the slide plate are respectively provided with a plurality of teeth that mesh with the gears.

[0013] In one embodiment of this application, the paper feeding assembly includes a second driving member, a rotating plate, a positioning shaft, a slide rod, and a plurality of suction cup assemblies. The positioning shaft is disposed on a second support plate. The second support plate is provided with an arc-shaped groove, and the slide rod is slidably connected to the arc-shaped groove. The second driving member is disposed on the side wall of one of the second support plates, and its telescopic end is hinged to the rotating plate. One end of the rotating plate is rotatably connected to the positioning shaft, and the other end of the rotating plate is connected to the slide rod. The plurality of suction cup assemblies are respectively disposed on the slide rod.

[0014] Compared with the prior art, the present invention has at least the following beneficial effects: (1) By pre-adsorbing particulate matter on the paper surface through the electrostatic adsorption component, the contaminants are effectively blocked from entering the printing area, thereby protecting the nozzle and stabilizing the printing quality; (2) By timely removing the contaminants accumulated on the adsorption roller through the separation component, the secondary pollution caused by the fall off of contaminants is avoided, and the continuous and efficient adsorption capacity of the adsorption roller is guaranteed; (3) The internal unblocking and external wiping of multiple nozzles can be performed simultaneously by using the rotatable cleaning needle and cleaning sponge, without disassembling the printing head, which is convenient to operate and improves the overall printing efficiency.

[0015] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0016] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, wherein:

[0017] Figure 1 This is a schematic diagram of the structure of a paper printing apparatus according to an embodiment of this application. Figure 1 ;

[0018] Figure 2 This is a cross-sectional view of a paper printing apparatus according to an embodiment of this application;

[0019] Figure 3 For this application Figure 2 Schematic diagram of the structure of area A in the middle;

[0020] Figure 4 This is a schematic diagram of the structure of a paper printing apparatus according to an embodiment of this application. Figure 2 ;

[0021] Figure 5 This is a schematic diagram of the printing mechanism in this application;

[0022] Figure 6 This is a schematic diagram of the cleaning component in this application. Figure 1 ;

[0023] Figure 7 This is a schematic diagram of the cleaning component in this application. Figure 2 ;

[0024] Figure 8 This is a cross-sectional view of the cleaning component in this application;

[0025] Figure 9 This is a schematic diagram showing the positional relationship between the printhead and the cleaning assembly in this application;

[0026] Figure 10 This is a schematic diagram of the suction cup assembly in this application.

[0027] As shown in the figure: 1. Conveyor belt; 2. Lifting plate; 3. Paper feeding assembly; 4. Electrostatic adsorption assembly; 5. Printing mechanism; 6. Cleaning assembly; 7. Separation assembly; 8. Partition; 10. First support plate; 11. Second support plate; 12. First linear movement mechanism; 13. Groove; 14. First driving component; 15. Rotating shaft; 16. Gear; 17. Third linear movement mechanism; 18. Slide plate; 19. Tooth; 20. Limiting plate; 31. Second driving component; 32. Rotating plate; 33. Positioning shaft; 34. Slide rod 35. Suction cup assembly; 351. Telescopic rod; 352. Rod sleeve; 353. Second spring; 354. Suction cup; 111. Arc-shaped chute; 41. Electrostatic generator; 42. Adsorption roller; 43. Pressure roller; 51. Outer shell; 52. Second linear movement mechanism; 53. Printing head; 61. Box; 62. Turntable; 63. Cleaning sponge; 64. Cleaning needle; 611. First cavity; 612. Second cavity; 71. Collection box; 72. Scraper; 73. Support shaft; 74. First spring; 75. Adsorption cover. Detailed Implementation

[0028] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application.

[0029] The paper printing apparatus of this application embodiment will now be described with reference to the accompanying drawings.

[0030] like Figures 1 to 10 As shown, the paper printing apparatus of this application embodiment may include a conveyor belt 1, a lifting plate 2, a paper feeding assembly 3, an electrostatic adsorption assembly 4, a printing mechanism 5, and a cleaning assembly 6.

[0031] The conveyor belt 1 is positioned between the two first support plates 10.

[0032] It should be noted that a conveyor roller is rotatably connected above the conveyor belt 1, and the conveyor roller is set near the input end of the conveyor belt 1 to achieve stable paper conveying.

[0033] A second support plate 11 is provided on one side of the first support plate 10. The opposite surfaces of the two second support plates 11 are respectively embedded with a first linear moving mechanism 12. The lifting plate 2 is connected to the first linear moving mechanism 12.

[0034] In the embodiments of this application, the first linear moving mechanism 12 can be a slide module, the structure of which is the prior art in the field. The first linear moving mechanism 12 is arranged vertically to adjust the height of the lifting plate 2. A plurality of position-adjustable limiting plates 20 are provided on the upper surface of the lifting plate 2. The limiting plates 20 are used to limit the stack of paper to prevent the paper from shifting during the feeding process.

[0035] The paper feeding assembly 3 is mounted on the second support plate 11 and located above the lifting plate 2. The paper feeding assembly 3 is used to feed paper sheets one by one.

[0036] In the embodiments of this application, the paper feeding component 3 can continuously place single sheets of paper on the conveyor belt 1 to achieve paper feeding.

[0037] The electrostatic adsorption component 4 and the printing mechanism 5 are arranged sequentially above the conveyor belt 1 along the conveying direction. A separation component 7 is provided between the two first support plates 10, and the separation component 7 is connected to the electrostatic adsorption component 4.

[0038] In the embodiments of this application, the electrostatic adsorption component 4 can quickly remove particulate contaminants from the paper surface, prevent them from entering the printing area, thereby avoiding nozzle contamination and ultimately ensuring printing quality.

[0039] Furthermore, the separation component 7 can immediately clean the contaminants on the electrostatic adsorption component 4, avoiding secondary pollution and improving the cleaning effect of contaminants.

[0040] To improve ink drying efficiency and prevent smudging, a drying mechanism can be installed behind the printing unit 5 to dry the printed matter immediately.

[0041] The cleaning component 6 is mounted on one of the first support plates 10 and is used to clean the nozzle of the printing mechanism 5.

[0042] In the embodiments of this application, the cleaning component 6 is used to clean the ink on the outer wall of the nozzle and unclog its internal channels, which can effectively prevent nozzle clogging and will not cause wear. This cleaning process does not require disassembling the print head 53, is convenient to operate, and is efficient, thus not delaying the printing progress.

[0043] To further clarify the above embodiments, in one embodiment of this application, such as Figure 1 and Figure 2 As shown, the electrostatic adsorption assembly 4 includes an electrostatic generator 41, an adsorption roller 42, and two pressure rollers 43. The electrostatic generator 41 is mounted on the side wall of one of the first support plates 10. The adsorption roller 42 and the two pressure rollers 43 are rotatably disposed between the two first support plates 10. The adsorption roller 42 is connected to the electrostatic generator 41. The two pressure rollers 43 are disposed on both sides of the adsorption roller 42 and are in contact with the upper surface of the conveyor belt 1.

[0044] It should be noted that the electrostatic generator 41 enables the surface of the adsorption roller 42 to carry static electricity. The adsorption roller 42 is located above the conveyor belt 1 and does not contact the conveyor belt 1. When the paper passes under the adsorption roller 42, the electrostatically charged adsorption roller 42 can adsorb particles on the paper onto the adsorption roller 42, thereby achieving the purpose of cleaning. By setting the intensity of the electrostatic force, it is ensured that the electrostatic force can adsorb particles, but is insufficient to adsorb paper, thus ensuring stable and non-deviation-free paper conveying.

[0045] Furthermore, the pressure roller 43 rolls and conveys the paper, further ensuring the stability of the paper conveying process.

[0046] As a possible solution, to ensure that the paper does not shift during transport, an adsorption plate can be installed below the conveyor belt 1. The adsorption plate is in close contact with the lower surface of the conveyor section, and a negative pressure is generated by the adsorption motor to adsorb the paper through the through holes on the conveyor belt 1, thereby keeping the paper stable.

[0047] As another possible scenario, the conveyor belt 1 can be electrostatically treated to help fix the paper using electrostatic adsorption.

[0048] Furthermore, such as Figure 3 As shown, the separation component 7 includes a collection box 71, a scraper 72, a support shaft 73, a first spring 74, and an adsorption cover 75. The two ends of the collection box 71 are respectively connected to the corresponding first support plate 10. The support shaft 73 is disposed inside the collection box 71. The scraper 72 is obliquely disposed inside the collection box 71, and one end of the scraper 72 is rotatably connected to the support shaft 73. The other end of the scraper 72 is in contact with the outer wall of the adsorption roller 42. The two ends of the first spring 74 are respectively connected to the scraper 72 and the inner wall of the collection box 71. The adsorption cover 75 is disposed above the scraper 72, and its adsorption port is aligned with the contact position of the scraper 72 and the adsorption roller 42.

[0049] It should be noted that a collection box for collecting particulate matter and an adsorption motor for providing suction are provided on the first support plate 10. The adsorption motor is connected to the collection box, and the collection box is connected to the adsorption cover 75 through a connecting pipe. The adsorption motor generates a certain suction force on the adsorption cover 75 to adsorb the pollutants scraped off by the scraper 72 into the collection box in a timely manner.

[0050] Further, see Figure 3 Under the tension of the first spring 74, one end of the scraper 72 remains in contact with the adsorption roller 42. The inclined setting of the scraper 72 helps to quickly separate particles from the roller surface, which not only prevents contaminants from falling and causing secondary contamination of the paper, but also ensures the cleanliness of the adsorption roller 42 surface, thereby maintaining its continuous and efficient adsorption capacity.

[0051] In one embodiment of this application, such as Figure 5 As shown, the printing mechanism 5 includes a housing 51, a second linear motion mechanism 52, and a printing head 53. The housing 51 is mounted on the first support plate 10, the second linear motion mechanism 52 is disposed inside the housing 51, and the printing head 53 is disposed on the slide of the second linear motion mechanism 52.

[0052] It should be noted that the printing mechanism 5 of this application also includes an ink supply system, which includes an ink cartridge and a delivery pump. The ink supply system continuously supplies ink to the print head 53 through an external large-capacity ink tank and a hose. The delivery pump is responsible for delivering ink from the storage unit to the print head 53. The printing principle of the printing mechanism 5 and the specific connection relationship of each component are existing technologies and will not be described in detail in this application.

[0053] Furthermore, the second linear motion mechanism 52 can be a slide module. The second linear motion mechanism 52 is perpendicular to the conveying direction of the conveyor belt 1. The second linear motion mechanism 52 can drive the printing head 53 to move back and forth, and use multiple nozzles on the printing head 53 to spray ink onto the paper to achieve printing.

[0054] Furthermore, such as Figure 6 , Figure 7 and Figure 8 As shown, the cleaning assembly 6 includes a housing 61, multiple turntables 62, multiple cleaning sponges 63, and multiple cleaning needles 64. The first support plate 10 has a groove 13, in which a first driving member 14 is installed. The housing 61 is located at the output end of the first driving member 14, and the housing 61 has a partition 8 inside, which divides the housing 61 into a first cavity 611 and a second cavity 612 arranged vertically. The multiple turntables 62 are rotatably arranged in the first cavity 611, the multiple cleaning sponges 63 are connected to the corresponding turntables 62, and the multiple cleaning needles 64 are respectively located at the center of the corresponding turntables 62, and the cleaning needles 64 are correspondingly arranged with the nozzles of the printing head 53.

[0055] It should be noted that the first driving component 14 can be an electric push rod. The height of the cleaning component 6 can be adjusted by the first driving component 14 to facilitate cleaning of the nozzle.

[0056] Furthermore, the cleaning sponge 63 is detachable, facilitating its replacement. The cleaning sponge 63 also features a cleaning groove inside that matches the nozzle, ensuring a better fit and improved nozzle cleaning efficiency. Additionally, the cleaning needle 64 can be inserted into the nozzle to unclog the nozzle channel and effectively prevent ink clogging.

[0057] In one embodiment of this application, such as Figure 7 and Figure 8 As shown, multiple rotating shafts 15 corresponding to the turntable 62 are rotatably connected inside the second cavity 612. Each rotating shaft 15 is equipped with a gear 16. Two third linear motion mechanisms 17 are provided at the bottom of the housing 61. A slide plate 18 is connected to the slide of the third linear motion mechanism 17. Multiple teeth 19 that mesh with the gear 16 are provided on the two side walls of the slide plate 18.

[0058] It should be noted that each third linear motion mechanism 17 is slidably connected to two slides, the two slides move in the same direction and are connected to the slide plate 18, using the slides to drive the slide plate 18 to move back and forth. The slide plate 18 slides within the second cavity 612, and the two side walls of the housing 61 are provided with through slots that allow the slide plate 18 to pass through.

[0059] Furthermore, since the multiple shafts 15 and multiple gears 16 are arranged in a matrix, refer to Figure 7 A slide plate 18 is provided between the two rows of horizontally arranged gears 16. When the slide plate 18 moves back and forth, it can drive the gears 16 to rotate, which in turn drives the cleaning sponge 63 to rotate. The cleaning sponge 63 rubs around the nozzle to clean away residual ink.

[0060] In one embodiment of this application, such as Figure 4 As shown, the paper feeding assembly 3 includes a second driving member 31, a rotating plate 32, a positioning shaft 33, a slide rod 34, and multiple suction cup assemblies 35. The positioning shaft 33 is mounted on a second support plate 11, and the second support plate 11 has an arc-shaped slide groove 111. The slide rod 34 is slidably connected to the arc-shaped slide groove 111. The second driving member 31 is mounted on the side wall of one of the second support plates 11, and its telescopic end is hinged to the rotating plate 32. One end of the rotating plate 32 is rotatably connected to the positioning shaft 33, and the other end of the rotating plate 32 is connected to the slide rod 34. Multiple suction cup assemblies 35 are respectively mounted on the slide rod 34.

[0061] It should be noted that the second driving component 31 can be an electric push rod, and the second driving component 31 is rotatably connected to the second support plate 11. The output end of the second driving component 31 is hinged to the middle of the rotating plate 32. The second driving component 31 can drive the rotating plate 32 to rotate around the positioning shaft 33 at a certain angle. Under the constraint of the arc-shaped slide groove 111, the slide rod 34 moves synchronously with the rotating plate 32, driving the suction cup assembly 35 on it to adsorb the paper and rotate together, thereby transferring the paper to the conveyor belt 1, and conveying it with the help of the conveyor belt 1.

[0062] Furthermore, multiple suction cup assemblies 35 are evenly distributed on the slide bar 34, and the position of the suction cup assemblies 35 is adjustable, thus facilitating the adaptation to paper of different widths.

[0063] Specifically, see Figure 10 The suction cup assembly 35 is connected to a controller (not shown in the figure). The suction cup assembly 35 includes a vacuum pump, a telescopic rod 351, a rod sleeve 352, a second spring 353, and a suction cup 354. One end of the telescopic rod 351 is slidably connected to the rod sleeve 352, and the other end of the telescopic rod 351 is connected to the suction cup 354. The second spring 353 is disposed inside the rod sleeve 352 and connected to the telescopic rod 351. The rod sleeve 352 is mounted on a slide rod 34. The vacuum pump is connected to the suction cup via a vacuum pipeline. Through the cooperation of the telescopic rod 351 and the second spring 353, the height of the paper can be adaptively adjusted, ensuring that the suction cup 354 can adhere to the topmost piece of paper.

[0064] When the suction cup is positioned above and in contact with the paper, the controller sends a "grab" signal, the vacuum solenoid valve activates, switches to the "adsorption" position, connecting the suction cup to the vacuum source while simultaneously closing the connection to the atmosphere. The vacuum pump starts working, quickly removing the air from the sealed space between the suction cup and the paper surface, causing the paper to be lifted. Once the suction cup assembly 35 rotates with the slide bar 34 above the conveyor belt 1, the controller sends a "release" signal, and the vacuum solenoid valve switches to the "release" position. At this point, the connection between the suction cup and the vacuum source is severed, and the suction cup is connected to the atmospheric environment. External air rapidly flows into the suction cup, restoring the internal and external pressures to equilibrium. The suction force acting on the paper instantly disappears, and the paper falls stably onto the conveyor belt 1. It is understood that the control method of the suction cup assembly 35 is prior art, and will not be elaborated upon further in this application.

[0065] Specifically, during printing, personnel place stacks of paper on the lifting plate 2 and limit the paper using the limiting plate 20.

[0066] After the equipment is started, the paper feeding assembly 3 starts to work. The second drive component 31 drives the rotating plate 32 to swing back and forth around the positioning shaft 33, while the slide bar 34 slides back and forth along the arc-shaped slide groove 111. When the suction cup assembly 35 remains vertical, it adsorbs the paper on the lifting plate 2. Then, it rotates a certain angle with the slide bar 34 to deliver the paper to the conveyor belt 1, and the paper moves with the conveyor belt 1.

[0067] The paper moves along the conveyor belt 1. When the paper passes under the electrostatic adsorption roller 42, the particulate contaminants on its surface are adsorbed and scraped off by the scraper 72. Then, the paper is sucked into the collection box by the adsorption hood 75 for unified treatment. Compared with direct adsorption by the adsorption hood 75, this separation method can avoid adsorbing the paper, ensure stable paper conveying, and remove the particulate matter carried by the paper to prevent it from entering the printing area, thereby ensuring printing quality.

[0068] As the paper passes through the printing mechanism 5, the print head 53 drips ink onto it in an orderly manner, forming the target image. After printing is completed, the paper continues to be transported by the conveyor belt 1 and is eventually separated from it.

[0069] When the printhead 53 requires cleaning after prolonged use, see [link to relevant documentation]. Figure 9 The relevant personnel move the cleaning head 53 directly above the cleaning assembly 6 using the second linear movement mechanism 52. Then, the first drive unit 14 is activated, causing the housing 61 to rise, allowing multiple cleaning needles 64 to insert into their respective nozzles, while multiple cleaning sponges 63 adhere to the outer wall of their respective nozzles. Next, the third linear movement mechanism 17 is activated, causing the slide plate 18 to move back and forth. Under the meshing of the teeth 19, the gear 16 rotates continuously in both directions, driving the turntable 62 to rotate. The cleaning sponges 63 rotate accordingly, rubbing against the outer wall of the nozzle to clean the ink, while the cleaning needles 64 unclog internal channels to prevent nozzle blockage. This cleaning process does not require disassembling the printing head 53, making it convenient and efficient.

[0070] In summary, the paper printing apparatus of this application, by pre-adsorbing particulate matter on the paper surface, effectively blocks contaminants from entering the printing area, protects the nozzles and stabilizes printing quality, and allows for internal unclogging and external wiping of the nozzles without disassembling the print head, significantly improving overall printing efficiency.

[0071] In the description of this specification, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0072] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

Claims

1. A paper printing apparatus, characterized in that, It includes a conveyor belt, a lifting plate, a paper feeding assembly, an electrostatic adsorption assembly, a printing mechanism, and a cleaning assembly, among which, The conveyor belt is disposed between the two first support plates; A second support plate is provided on one side of the first support plate, and a first linear motion mechanism is embedded in the opposite face of the two second support plates respectively. The lifting plate is connected to the first linear motion mechanism. The paper feeding assembly is disposed on the second support plate and located above the lifting plate. The paper feeding assembly is used to feed paper sheets one by one. The electrostatic adsorption component and the printing mechanism are sequentially arranged above the conveyor belt along the conveying direction; A separation assembly is provided between the two first support plates, and the separation assembly is connected to the electrostatic adsorption assembly; The cleaning component is disposed on one of the first support plates, and the cleaning component is used to clean the printhead of the printing mechanism; The separation assembly includes a collection box, a scraper, a support shaft, a first spring, and an adsorption cover. The two ends of the collection box are respectively connected to the corresponding first support plates. The support shaft is disposed inside the collection box. The scraper is obliquely disposed inside the collection box, with one end rotatably connected to the support shaft and the other end of the scraper in contact with the outer wall of the adsorption roller. The two ends of the first spring are respectively connected to the scraper and the inner wall of the collection box. The adsorption cover is disposed above the scraper, with its adsorption port aligned with the contact position between the scraper and the adsorption roller. The cleaning assembly includes a housing, multiple turntables, multiple cleaning sponges, and multiple cleaning needles. A first support plate has a groove in which a first driving component is installed. The housing is located at the output end of the first driving component, and its interior is divided into a first cavity and a second cavity arranged vertically. Multiple turntables are rotatably disposed within the first cavity. Multiple cleaning sponges are connected to their respective turntables, and each sponge has a cleaning groove inside that matches a nozzle. Multiple cleaning needles are positioned at the center of their respective turntables, and each cleaning needle corresponds to a nozzle on the printing head. The second cavity is rotatably connected to multiple rotating shafts corresponding to the turntable, and each rotating shaft is equipped with a gear; the bottom of the box is provided with two third linear motion mechanisms, and a slide plate is connected to the slide of the third linear motion mechanism. The two side walls of the slide plate are respectively provided with multiple teeth that mesh with the gears.

2. The paper printing apparatus according to claim 1, characterized in that, The electrostatic adsorption assembly includes an electrostatic generator, an adsorption roller, and two pressure rollers, wherein... The electrostatic generator is mounted on the side wall of one of the first support plates; The adsorption roller and the two pressure rollers are rotatably disposed between the two first support plates, and the adsorption roller is connected to the electrostatic generator; the two pressure rollers are disposed on both sides of the adsorption roller and are in contact with the upper surface of the conveyor belt.

3. The paper printing apparatus according to claim 1, characterized in that, The printing mechanism includes a housing, a second linear motion mechanism, and a printing head, wherein... The outer casing is mounted on the first support plate; The second linear motion mechanism is disposed inside the housing; The printing head is mounted on the slide of the second linear motion mechanism.

4. The paper printing apparatus according to claim 1, characterized in that, The paper feeding assembly includes a second driving component, a rotating plate, a positioning shaft, a slide rod, and multiple suction cup assemblies, wherein... The positioning shaft is disposed on the second support plate; The second support plate is provided with an arc-shaped groove, and the slide rod is slidably connected to the arc-shaped groove; The second driving member is disposed on the side wall of one of the second support plates, and its telescopic end is hinged to the rotating plate; One end of the rotating plate is rotatably connected to the positioning shaft, and the other end of the rotating plate is connected to the slide rod; Multiple suction cup assemblies are respectively disposed on the slide rod. Each suction cup assembly includes a vacuum pump, a telescopic rod, a rod sleeve, a second spring, and a suction cup. One end of the telescopic rod is slidably connected to the rod sleeve, and the other end of the telescopic rod is connected to the suction cup. The second spring is disposed inside the rod sleeve and connected to the telescopic rod. The rod sleeve is disposed on the slide rod, and the vacuum pump is connected to the suction cup through a vacuum pipeline.

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