Green and environment-friendly printing device and printing method

Abstract

The invention belongs to the technical field of green printing devices, and particularly relates to a green environment-friendly printing device and a printing method.The green environment-friendly printing device comprises a conveying assembly, a driving assembly used for changing the conveying state of a conveying belt is arranged at the top of the conveying assembly, and a detection assembly used for measuring the thickness of a printed part is arranged on one side of the driving assembly; in the conveying process of the to-be-printed piece through the conveying assembly, the to-be-printed piece sequentially passes through the detection assembly and the printing assembly, the thickness of the to-be-printed piece is detected through the detection assembly, the printing assembly measures the thickness of the to-be-printed piece according to the detection assembly, and the ink jet amount of the printing assembly is controlled according to the thickness. The conveying state of the conveying assembly is changed through the driving assembly so as to improve the ink jetting environment-friendly effect of the to-be-printed piece, and the accurate control over the ink jetting amount and the post-drying efficiency of the ink are improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of green printing devices, and in particular relates to a green environmentally friendly printing device and a printing method. Background Art

[0002] A printing device refers to a device that transfers ink from originals such as text, pictures, and photos to surfaces such as paper, foam boards, and plastic products through processes such as plate making, inking, and printing. This greatly facilitates the publishing of books. Therefore, the invention and development of printing devices plays a vital role in human civilization and cultural communication.

[0003] After searching, in the prior art, Chinese patent publication number CN217532296U, authorization announcement date: 2022-10-04, discloses a green and environmentally friendly printing device, including a printing table, a transport mechanism is provided on the printing table, a support frame is fixedly connected to one end of the printing table, a printing head is connected to the support frame, an ink cartridge is fixedly connected to the printing head, an ink absorbing component is provided near the printing head on the printing table, the ink absorbing component includes two mutually parallel first support plates, the first support plates are fixedly connected to the printing table, an ink absorbing head is fixed between the two first support plates, a vacuum pump for absorbing ink is connected to the outside of the ink absorbing head, and the end of the vacuum pump away from the ink absorbing head is connected to the ink cartridge. This application has the effect of reducing ink waste during printing.

[0004] However, the device still has the following defects: although it can reduce the waste of ink during printing, it cannot measure the different sizes of printed parts to control the amount of ink sprayed, and it is easy for excess ink to remain on the printed parts, resulting in a longer drying time. Summary of the invention

[0005] In response to the above problems, the present invention provides a green and environmentally friendly printing device, including a conveying component, a driving component for changing the conveying state of the conveyor belt is arranged on the top of the conveying component, a detection component for measuring the thickness of the printed work is arranged on one side of the driving component, a printing component for spraying the upper surface of the printed work is arranged in the driving component, the top of the conveying component is also rollingly connected to the work to be printed, and the work to be printed is horizontally moved from the detection component to the other end of the conveying component.

[0006] Furthermore, the conveying assembly includes a conveying platform; a guide groove is opened at one end of the side wall of the conveying platform, and the inner wall of the guide groove is slidably connected with a linkage pin, and one end of the side wall of the conveying platform is also fixedly connected with two groups of limit plates, and a tension spring is arranged between the two groups of the limit plates and the linkage pin, and both ends of the linkage pin are fixedly connected with linkage plates, and a first roller is rotatably connected between the two groups of the linkage plates, and a belt is sleeved on the first roller.

[0007] Furthermore, the driving assembly includes two groups of vertical plates; adjustment grooves are provided on the surfaces of the two groups of vertical plates, and the two groups of vertical plates are fixedly connected to the outer wall of the conveying platform, and a porous tube is slidably connected in the adjustment groove, and sleeves are provided at both ends of the porous tube. The tops of the two groups of sleeves are transmission-connected to the output ends of the first electric push rods, a heater is provided at one end of the porous tube, and the other end of the porous tube is transmission-connected to the output end of the servo motor.

[0008] Furthermore, second electric push rods are embedded and installed on the surfaces of the two groups of vertical plates, and the output ends of the two groups of second electric push rods are transmission-connected with linkage arms. One group of linkage arms is rotationally connected to the bottom of the heater, and the other group of linkage arms is rotationally connected to the bottom of the servo motor. The outer walls of the two groups of vertical plates are provided with arc-shaped guide members, and the inner walls of the two groups of arc-shaped guide members are rotationally connected with two groups of second rollers, and one side of the inner walls of the two groups of arc-shaped guide members is slidably fitted with a first pressing roller.

[0009] Furthermore, a second pressing roller is slidably connected to the other side of the inner wall of the two groups of arc-shaped guide members, compression springs are provided at both ends of the first pressing roller and the top of both ends of the second pressing roller, and the other end of the compression spring is abutted and connected to the top of the inner wall of the arc-shaped guide member, a scraper is attached to the top of the second pressing roller, and a storage shell is embedded in one side wall of the scraper, and the opening of the storage shell is located near the connection between the scraper and the second pressing roller.

[0010] Furthermore, the detection assembly includes two groups of positioning plates; a third roller is rotatably connected between the two groups of positioning plates, and the third roller is sleeved on the other end of the belt; guide rollers are fixedly connected to the two groups of positioning plates, and two groups of limiting mechanisms are slidably connected to the guide rollers.

[0011] Furthermore, the limiting mechanism includes a first baffle and a second baffle; one end of the first baffle is fixedly connected to a first guide ring, and the first guide ring is sleeved on the first pressing roller, the second baffle is hinged and rotatably connected to the first baffle, a side wall of the second baffle is fixedly connected to a second guide ring, and the first guide ring is sleeved on the guide roller, the top of the second baffle is rotatably connected to an air nozzle, and an infrared ranging sensor is embedded and installed on one side wall of the second baffle.

[0012] Furthermore, the printing assembly includes a slide; an ink cartridge is slidably connected to the top of the slide, a recovery pipe is connected between the top of the ink cartridge and the top of the storage shell, and a suction pump is provided on the recovery pipe, slide electric push rods are provided on both sides of the outer wall of the slide, and the output ends of the slide electric push rods are transmission-connected to the ink cartridge.

[0013] Furthermore, a printing nozzle is installed at the bottom of the ink cartridge, and the printing nozzle is electrically connected to an infrared ranging sensor. Ultraviolet drying lamps are embedded on both sides of the bottom of the slide, and the bottoms of the two groups of electric push rods of the slide are fixedly connected to the side of the first electric push rod away from the output end.

[0014] A printing method of a green environmentally friendly printing device comprises the following steps:

[0015] The conveying component is used to convey the printed piece so that the printed piece passes through the detection component and the printing component in sequence.

[0016] The thickness of the workpiece to be printed is detected by the detection component, so that the printing component measures the thickness of the workpiece to be printed according to the detection component;

[0017] controlling the ink jetting amount of the printing component according to the thickness;

[0018] The conveying state of the conveying component is changed by the driving component to improve the inkjet environmental protection effect of the printed part.

[0019] The beneficial effects of the present invention are:

[0020] 1. During the process of conveying the workpiece to be printed, the conveying component makes the workpiece to be printed pass through the detection component and the printing component in sequence. The detection component detects the thickness of the workpiece to be printed, and the printing component measures the thickness of the workpiece to be printed according to the detection component. The inkjet amount of the printing component is controlled according to the thickness. The conveying state of the conveying component is changed by the driving component to improve the inkjet environmental protection effect of the workpiece to be printed, and improve the precise control of the inkjet amount and the efficiency of post-drying of the ink.

[0021] 2. The output end of the first electric push rod is used to push the porous tube downward, and the porous tube is connected to the upper surface of the belt by means of abutment, so that a concave material cavity is formed between the first pressing roller and the second pressing roller of the belt, and the porous tube is rotatably connected in the concave material cavity, and the servo motor is used to drive the porous tube to rotate, and the second electric push rod is used to drive the porous tube to move back and forth horizontally, so that the porous tube is in a state of reciprocating horizontal movement during the rotation process in the concave material cavity, and while the heater is continuously working, the airflow is diffused from the porous tube to the top surface of the concave material cavity, so that the different positions on the bottom of the past to be printed parts are evenly dried after the ink is sprayed.

[0022] 3. The first pressing roller and the second pressing roller are pressed together by the compression spring at the top to prevent the printing head from performing inkjet printing on the uneven workpiece to be printed, thereby avoiding wrinkles or wavy deformation and making the paper surface smoother.

[0023] 4. After the second nip roller contacts the upper surface of the workpiece to be printed after inkjet printing, the dried workpiece to be printed can be flattened in time, and the excess ink attached to the second nip roller will be removed by the scraper and then sucked into the storage shell. Finally, under the action of the recovery pipe, the ink in the storage shell will flow back to the ink box, which is convenient for environmental protection and recycling.

[0024] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures pointed out in the description, claims and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 A schematic diagram of the structure of a green environmentally friendly printing device according to an embodiment of the present invention is shown;

[0027] Figure 2 A schematic diagram showing the structure of a driving component, a detection component and a printing component according to an embodiment of the present invention is shown;

[0028] Figure 3 A schematic diagram of the structure of a conveying assembly according to an embodiment of the present invention is shown;

[0029] Figure 4 A schematic diagram of the structure of a driving component according to an embodiment of the present invention is shown;

[0030] Figure 5 A schematic diagram of the structure of the second nip roller according to an embodiment of the present invention is shown;

[0031] Figure 6 A schematic diagram of the structure of a detection component according to an embodiment of the present invention is shown;

[0032] Figure 7 A schematic diagram of the structure of the limiting mechanism according to an embodiment of the present invention is shown;

[0033] Figure 8 The structure of the printing assembly of the embodiment of the present invention is shown Figure 1 ;

[0034] Fig. 9 The structure of the printing assembly of the embodiment of the present invention is shown Figure 2 .

[0035] In the figure: 1. conveying assembly; 11. conveying platform; 12. guide groove; 13. linkage pin; 14. limit plate; 15. tension spring; 16. linkage plate; 17. first roller; 18. belt; 2. driving assembly; 21. vertical plate; 22. adjustment groove; 23. porous tube; 24. sleeve; 25. first electric push rod; 26. second electric push rod; 27. linkage arm; 28. arc guide; 29. ​​second roller; 210. first pressing roller; 211. second pressing roller; 212. Scraper; 213, storage shell; 3, detection component; 31, positioning plate; 32, third roller; 33, guide roller; 34, limiting mechanism; 341, first baffle; 342, first guide ring; 343, second baffle; 344, second guide ring; 345, air nozzle; 346, infrared ranging sensor; 4, printing component; 41, slide; 42, ink cartridge; 43, recovery tube; 44, slide electric push rod; 45, printing nozzle; 46, ultraviolet drying lamp; 5, workpiece to be printed. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution 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. 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.

[0037] The embodiment of the present invention provides a green environmentally friendly printing device, including a conveying component 1; illustratively, as Figure 1 and Figure 2 shown.

[0038] A driving component 2 for changing the conveying state of the conveyor belt is arranged on the top of the conveying component 1, a detection component 3 for measuring the thickness of the printed work is arranged on one side of the driving component 2, a printing component 4 for spraying the upper surface of the printed work is arranged inside the driving component 2, and a workpiece 5 to be printed is also rollingly connected to the top of the conveying component 1, and the workpiece 5 to be printed is horizontally moved from the detection component 3 to the other end of the conveying component 1.

[0039] Specifically, the conveying component 1 is used to convey the workpiece 5 to be printed, so that the workpiece 5 to be printed passes through the detection component 3 and the printing component 4 in sequence. The detection component 3 can detect the thickness of the workpiece 5 to be printed, and the printing component 4 measures the thickness of the workpiece 5 to be printed according to the detection component 3. The inkjet amount of the printing component 4 is controlled according to the thickness to achieve the purpose of environmental protection, and then the driving component 2 is used to change the conveying state of the conveying component 1 to improve the environmental protection effect of the inkjet of the workpiece 5 to be printed.

[0040] The conveying assembly 1 includes a conveying platform 11; illustratively, as Figure 3 shown.

[0041] A guide groove 12 is provided at one end of the side wall of the conveying platform 11, and a linkage pin 13 is slidably connected to the inner wall of the guide groove 12. Two groups of limit plates 14 are also fixedly connected to one end of the side wall of the conveying platform 11, and a tension spring 15 is provided between the two groups of limit plates 14 and the linkage pin 13. Both ends of the linkage pin 13 are fixedly connected with linkage plates 16, and a first roller 17 is rotatably connected between the two groups of linkage plates 16, and a belt 18 is sleeved on the first roller 17.

[0042] The drive assembly 2 includes two sets of vertical plates 21; illustratively, Figure 4 and Figure 5 shown.

[0043] Adjustment grooves 22 are provided on the surfaces of the two groups of vertical plates 21, and the two groups of vertical plates 21 are fixedly connected to the outer wall of the conveying platform 11. A porous tube 23 is slidably connected in the adjustment groove 22. Both ends of the porous tube 23 are provided with sleeves 24. The tops of the two groups of sleeves 24 are transmission-connected with the output ends of the first electric push rods 25. A heater is provided at one end of the porous tube 23, and the other end of the porous tube 23 is transmission-connected with the output end of the servo motor. Second electric push rods 26 are embedded and installed on the surfaces of the two groups of vertical plates 21. The output ends of the two groups of the second electric push rods 26 are transmission-connected with linkage arms 27. One group of linkage arms 27 is rotationally connected to the bottom of the heater, and the other group of linkage arms 27 is rotationally connected to the bottom of the servo motor. The outer walls of 21 are all provided with arc-shaped guide members 28, and the inner walls of the two groups of the arc-shaped guide members 28 are rotatably connected with two groups of second rollers 29, one side of the inner walls of the two groups of the arc-shaped guide members 28 is slidably fitted with a first pressing roller 210, and the other side of the inner walls of the two groups of the arc-shaped guide members 28 is slidably fitted with a second pressing roller 211, and compression springs are provided at the tops of both ends of the first pressing roller 210 and both ends of the second pressing roller 211, and the other end of the compression spring is abutted and connected to the top of the inner wall of the arc-shaped guide member 28, the top of the second pressing roller 211 is fitted with a scraper 212, and a storage shell 213 is embedded in one side wall of the scraper 212, and the opening of the storage shell 213 is located near the connection between the scraper 212 and the second pressing roller 211.

[0044] The detection assembly 3 includes two sets of positioning plates 31; illustratively, as Figure 6 shown.

[0045] A third roller 32 is rotatably connected between the two groups of positioning plates 31, and the third roller 32 is sleeved on the other end of the belt 18. Guide rollers 33 are fixedly connected to the two groups of positioning plates 31, and two groups of limiting mechanisms 34 are slidably connected to the guide rollers 33.

[0046] The limiting mechanism 34 includes a first baffle 341 and a second baffle 343; illustratively, as Figure 7 shown.

[0047] One end of the first baffle plate 341 is fixedly connected to a first guide ring 342, and the first guide ring 342 is sleeved on the first pressing roller 210, the second baffle plate 343 is hingedly rotatably connected to the first baffle plate 341, a side wall of the second baffle plate 343 is fixedly connected to a second guide ring 344, and the second guide ring 344 is sleeved on the guide roller 33, the top of the second baffle plate 343 is rotatably connected to an air nozzle 345, and an infrared ranging sensor 346 is embedded in a side wall of the second baffle plate 343.

[0048] The printing assembly 4 includes a slide 41; illustratively, as Figure 8 and Fig. 9 shown.

[0049] An ink cartridge 42 is slidably connected to the top of the slide 41, a recovery pipe 43 is connected between the top of the ink cartridge 42 and the top of the storage shell 213, and a suction pump is provided on the recovery pipe 43, slide electric push rods 44 are provided on both sides of the outer wall of the slide 41, and the output ends of the slide electric push rods 44 are transmission-connected to the ink cartridge 42, a printing nozzle 45 is installed at the bottom of the ink cartridge 42, and the printing nozzle 45 is electrically connected to the infrared ranging sensor 346, ultraviolet drying lamps 46 are embedded and installed on both sides of the bottom of the slide 41, and the bottoms of the two groups of slide electric push rods 44 are fixedly connected to the side of the first electric push rod 25 away from the output end.

[0050] Specifically, the output end of the first electric push rod 25 pushes the porous tube 23 downward, and the porous tube 23 is connected to the upper surface of the belt 18 by means of the contact connection, so that a concave surface cavity is formed between the first nip roller 210 and the second nip roller 211 of the belt 18, and the porous tube 23 is rotatably connected in the concave surface cavity, and the servo motor is used to drive the porous tube 23 to rotate, and the second electric push rod 26 drives the porous tube 23 to reciprocate horizontally, so that the porous tube 23 is in a state of reciprocating horizontal movement during the rotation process in the concave surface cavity, and in the process of the continuous operation of the heater, the airflow is diffused from the porous tube 23 to the top surface of the concave surface cavity, and the different positions of the bottom of the past to-be-printed piece 5 are evenly dried after the ink is sprayed;

[0051] After the spacing between the first baffles 341 and the second baffles 343 on both sides is adjusted, the workpieces 5 to be printed of different widths can be guided, and the air nozzle 345 can be used to clean the surface of the workpieces 5 to be printed before printing. When the workpieces 5 to be printed move to the bottom of the first nip roller 210, the workpieces 5 to be printed will resist the first nip roller 210 upward due to the different thicknesses of the workpieces 5 to be printed, so that the first nip roller 210 drives the first baffle 341 to move upward, and the spacing between the side wall of the first baffle 341 and the infrared distance sensor 346 after the upward movement changes, so that the infrared distance sensor 346 transmits the changed signal to the printing nozzle 45, and the printing nozzle 45 changes the ink spraying amount of the printing nozzle 45 according to the measurement data of the infrared distance sensor 346, so as to avoid excessive printing of the thin workpieces 5 to be printed due to excessive ink volume, resulting in slow drying of the printed surface of the workpiece 5 to be printed.

[0052] The first nip roller 210 and the second nip roller 211 are both pressed against the workpiece 5 to be printed before and after printing by the resistance of the compression spring at the top, so as to prevent the printing head from performing inkjet printing on the uneven workpiece 5 to be printed, avoid wrinkles or wavy deformation, and make the paper surface smoother;

[0053] After the second pressing roller 211 contacts the upper surface of the workpiece 5 to be printed after inkjet printing, it can promptly flatten the dried workpiece 5 to be printed, and the excess ink attached to the second pressing roller 211 will be removed by the scraper 212 and then sucked into the storage shell 213, and finally, under the action of the recovery pipe 43, the ink in the storage shell 213 will flow back to the ink cartridge 42, so as to facilitate the purpose of environmental protection and recycling.

[0054] The working principle of a green environmentally friendly printing device proposed by the embodiment of the present invention is as follows:

[0055] After adjusting the spacing between the first baffles 341 and the second baffles 343 on both sides, the workpieces 5 to be printed of different widths can be guided, and the air nozzle 345 can also be used to clean the surface of the workpieces 5 to be printed before printing. When the workpieces 5 to be printed move to the bottom of the first nip roller 210, the workpieces 5 to be printed will resist the first nip roller 210 upward due to the different thicknesses of the workpieces 5 to be printed, so that the first nip roller 210 drives the first baffle 341 to move upward, and the spacing between the side wall of the first baffle 341 and the infrared distance sensor 346 after the upward movement changes, so that the infrared distance sensor 346 transmits the changed signal to the printing nozzle 45, and the printing nozzle 45 changes the ink spraying amount of the printing nozzle 45 according to the measurement data of the infrared distance sensor 346, so as to avoid excessive printing of the thin workpieces 5 to be printed due to excessive ink amount, resulting in slow drying of the printed surface of the workpiece 5 to be printed.

[0056] The output end of the first electric push rod 25 pushes the porous tube 23 downward, and the porous tube 23 is connected to the upper surface of the belt 18 by means of the contact connection between the porous tube 23 and the upper surface of the belt 18, so that a concave surface cavity is formed between the first nip roller 210 and the second nip roller 211 of the belt 18, and the porous tube 23 is rotatably connected in the concave surface cavity, and the servo motor is used to drive the porous tube 23 to rotate, and the second electric push rod 26 drives the porous tube 23 to reciprocate horizontally, so that the porous tube 23 is in a state of reciprocating horizontal movement during the rotation process in the concave surface cavity, and in the process of the continuous operation of the heater, the air flow is diffused from the porous tube 23 to the top surface of the concave surface cavity, and the different positions of the bottom of the past to-be-printed piece 5 are evenly dried after the ink is sprayed;

[0057] The first nip roller 210 and the second nip roller 211 are both pressed against each other by the compression spring at the top, so that the first nip roller 210 and the second nip roller 211 can press the workpiece 5 before and after printing, thereby preventing the printing head from performing inkjet printing on the uneven workpiece 5, avoiding wrinkles or wavy deformation, and making the paper surface smoother.

[0058] After the second pressing roller 211 contacts the upper surface of the workpiece 5 to be printed after inkjet printing, the dried workpiece 5 to be printed can be flattened in time, and the excess ink attached to the second pressing roller 211 will be removed by the scraper 212 and then sucked into the storage shell 213, and finally, under the action of the recovery pipe 43, the ink in the storage shell 213 will flow back to the ink cartridge 42, so as to facilitate the purpose of environmental protection and recycling.

[0059] Based on the above-mentioned green environmental protection printing device, an embodiment of the present invention further provides a printing method of the green environmental protection printing device, comprising the following steps:

[0060] The conveying component is used to convey the printed piece so that the printed piece passes through the detection component and the printing component in sequence.

[0061] The thickness of the workpiece to be printed is detected by the detection component, so that the printing component measures the thickness of the workpiece to be printed according to the detection component;

[0062] controlling the ink jetting amount of the printing component according to the thickness;

[0063] The conveying state of the conveying component is changed by the driving component to improve the inkjet environmental protection effect of the printed part.

[0064] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein; and these modifications or substitutions do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A green environmentally friendly printing device, characterized in that: It includes a conveying component, a driving component for changing the conveying state of the conveyor belt is arranged on the top of the conveying component, a detection component for measuring the thickness of the printed work is arranged on one side of the driving component, a printing component for spraying the upper surface of the printed work is arranged inside the driving component, and the top of the conveying component is also rollingly connected with the work to be printed, and the work to be printed is horizontally moved from the detection component to the other end of the conveying component.

2. The green environmentally friendly printing device according to claim 1, characterized in that: The conveying assembly includes a conveying platform; a guide groove is opened at one end of the side wall of the conveying platform, and a linkage pin is slidably connected to the inner wall of the guide groove; two groups of limit plates are also fixedly connected to one end of the side wall of the conveying platform, and a tension spring is arranged between the two groups of limit plates and the linkage pin, and both ends of the linkage pin are fixedly connected to the linkage plates, and a first roller is rotatably connected between the two groups of linkage plates, and a belt is sleeved on the first roller.

3. The green environmentally friendly printing device according to claim 1, characterized in that: The driving assembly includes two groups of vertical plates; the surfaces of the two groups of vertical plates are provided with adjustment grooves, and the two groups of vertical plates are fixedly connected to the outer wall of the conveying platform, and a porous tube is slidably connected in the adjustment groove, and sleeves are provided at both ends of the porous tube. The tops of the two groups of sleeves are transmission-connected to the output ends of the first electric push rods, a heater is provided at one end of the porous tube, and the other end of the porous tube is transmission-connected to the output end of the servo motor.

4. The green environmentally friendly printing device according to claim 3, characterized in that: A second electric push rod is embedded and installed on the surface of the two groups of vertical plates, and the output ends of the two groups of the second electric push rods are transmission-connected with linkage arms. One group of linkage arms is rotationally connected to the bottom of the heater, and the other group of linkage arms is rotationally connected to the bottom of the servo motor. The outer walls of the two groups of vertical plates are provided with arc-shaped guide members, and the inner walls of the two groups of arc-shaped guide members are rotationally connected with two groups of second rollers, and one side of the inner walls of the two groups of arc-shaped guide members is slidably fitted with a first pressing roller.

5. The green environmentally friendly printing device according to claim 4, characterized in that: A second pressing roller is slidably connected to the other side of the inner wall of the two groups of arc-shaped guide members, compression springs are provided at both ends of the first pressing roller and at both ends of the second pressing roller, and the other end of the compression spring is abutted and connected to the top of the inner wall of the arc-shaped guide member, a scraper is attached to the top of the second pressing roller, and a storage shell is embedded in one side wall of the scraper, and the opening of the storage shell is located near the connection between the scraper and the second pressing roller.

6. The green environmentally friendly printing device according to claim 1, characterized in that: The detection assembly includes two groups of positioning plates; a third roller is rotatably connected between the two groups of positioning plates, and the third roller is sleeved on the other end of the belt, and guide rollers are fixedly connected to the two groups of positioning plates, and two groups of limiting mechanisms are slidably connected to the guide rollers.

7. The green environmentally friendly printing device according to claim 6, characterized in that: The limiting mechanism includes a first baffle and a second baffle; one end of the first baffle is fixedly connected to a first guide ring, and the first guide ring is sleeved on the first pressing roller, the second baffle is hinged and rotatably connected to the first baffle, a side wall of the second baffle is fixedly connected to a second guide ring, and the first guide ring is sleeved on the guide roller, the top of the second baffle is rotatably connected to an air nozzle, and an infrared ranging sensor is embedded and installed on one side wall of the second baffle.

8. The green environmentally friendly printing device according to claim 1, characterized in that: The printing assembly includes a slide; an ink cartridge is slidably connected to the top of the slide, a recovery pipe is connected between the top of the ink cartridge and the top of the storage shell, and a suction pump is provided on the recovery pipe, slide electric push rods are provided on both sides of the outer wall of the slide, and the output ends of the slide electric push rods are transmission-connected to the ink cartridge.

9. The green environmentally friendly printing device according to claim 8, characterized in that: A printing nozzle is installed at the bottom of the ink cartridge, and the printing nozzle is electrically connected to an infrared ranging sensor. Ultraviolet drying lamps are embedded on both sides of the bottom of the slide, and the bottoms of the two groups of electric push rods of the slide are fixedly connected to the side of the first electric push rod away from the output end.

10. A printing method according to any one of claims 1 to 9, characterized in that: The printing method comprises: The conveying component is used to convey the printed piece so that the printed piece passes through the detection component and the printing component in sequence. The thickness of the workpiece to be printed is detected by the detection component, so that the printing component measures the thickness of the workpiece to be printed according to the detection component; controlling the ink jetting amount of the printing component according to the thickness; The conveying state of the conveying component is changed by the driving component to improve the inkjet environmental protection effect of the printed part.

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