Environment-friendly water-based ink printing equipment
By designing a combination of frame, ink bearing roller, telescopic cylinder, cleaning block, cleaning cotton and sliding components in ink printing equipment, fully automatic cleaning of the ink bearing roller surface is achieved, solving the problems of low cleaning efficiency and human wiping in the prior art, improving the cleaning effect and efficiency, and realizing automatic recycling and reuse to achieve the purpose of energy conservation and environmental protection.
Patent Information
- Application Number
- CN202422140509.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-30
- Publication Date
- 2025-05-27
- Estimated Expiration
- 2034-08-30
AI Technical Summary
When the existing ink printing equipment replaces the ink roller, the cleaning efficiency of the ink bearing roller surface is low and requires artificial wiping, resulting in poor cleaning effect.
An environmentally friendly water-based ink printing equipment is designed, which adopts a combination of frame, ink bearing roller, telescopic cylinder, cleaning block, cleaning cotton and sliding components. The drive element drives the ink bearing roller to rotate, and the telescopic cylinder drives the cleaning cotton to abut the surface of the ink bearing roller, and the sliding component realizes the cleaning cotton reciprocatingly on the surface of the ink bearing roller, and cooperates with the continuous rotation of the ink bearing roller to achieve full automatic cleaning.
It improves the cleaning effect and cleaning efficiency of the ink bearing roller surface, reduces artificial labor, is convenient and fast to control, and realizes the automatic recycling and reuse of cleaning liquid, achieving the purpose of energy conservation and environmental protection.
Smart Images

Figure CN222905140U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of printing equipment, in particular to an environment-friendly water-based ink printing equipment. Background Technique
[0002] A printing press is a machine for printing words and images. Generally, a printing press consists of mechanisms such as plate loading, inking, impression, and paper feeding. Its working principle is as follows: First, the words and images to be printed are made into a printing plate and installed on the printing press. Then, the printing press applies ink to the areas with words and images on the printing plate, and then directly or indirectly transfers them to paper or other printing substrates, thereby replicating the same printed matter as the printing plate.
[0003] Most of the ink printing equipment designed in the related art includes an ink tank and an ink-bearing roller. The ink-bearing roller is rotatably arranged in the ink tank, and the bottom end of the ink-bearing roller extends into the ink in the ink tank. By rotating the ink-bearing roller, the surface of the ink-bearing roller adheres to the ink and the ink-bearing roller is used to transport the ink. However, when different colors of ink are required, the ink in the ink tank needs to be replaced, and the surface of the ink-bearing roller needs to be cleaned. In the related art, the surface of the ink-bearing roller is mostly cleaned by manual wiping, with low cleaning efficiency and poor cleaning effect. Summary of the Utility Model
[0004] In order to facilitate the cleaning of the surface of the ink-bearing roller when replacing ink and improve the cleaning effect and efficiency, the present application provides an environment-friendly water-based ink printing equipment.
[0005] The environment-friendly water-based ink printing equipment provided by the present application adopts the following technical solutions:
[0006] An environment-friendly water-based ink printing equipment includes a frame and an ink-bearing roller rotatably arranged on the frame. An installation rod is arranged on the frame, and a group of telescopic cylinders are symmetrically arranged on the installation rod. The piston rods of the telescopic cylinders are commonly connected to a cleaning block. The length direction of the cleaning block is arranged along the length direction of the ink-bearing roller. A cleaning cotton is arranged on the cleaning block, and the cleaning cotton can be abutted against the surface of the ink-bearing roller; a sliding block is slidably arranged on the installation rod, the telescopic cylinder is arranged on the sliding block, and a sliding component is arranged on the frame for driving the sliding block to reciprocate along the length direction of the installation rod on the installation rod.
[0007] By adopting the above technical solution, when it is necessary to replace the ink and clean the surface of the ink-bearing roller, the driving element in the frame drives the ink-bearing roller to rotate on the frame. The piston rod of the telescopic cylinder extends to drive the cleaning block away from the mounting rod. At this time, the cleaning cotton on the cleaning block will abut against the surface of the ink-bearing roller. At the same time, the sliding component drives the sliding block to reciprocate along the length direction of the mounting rod on the mounting rod. Furthermore, the cleaning cotton reciprocates on the surface of the ink-bearing roller. With the continuous rotation of the ink-bearing roller, the cleaning cotton can wipe and clean different positions on the surface of the ink-bearing roller. At the same time, the cleaning effect is good, the control is convenient and fast, the manual labor is reduced, and the cleaning effect and cleaning efficiency are improved.
[0008] Preferably, the sliding component includes a rotating part, a rotating shaft and a linkage rod. The rotating shaft is rotatably arranged on the frame. The rotating part is arranged on the frame. The rotating part is used to drive the rotating shaft to rotate. A sliding groove for the linkage rod to slide is formed on the side wall of the mounting rod. The linkage rod penetrates through the sliding groove. A linkage groove is formed on the surface of the rotating shaft. The linkage groove is arranged in a wave shape. One end of the linkage rod is fixedly connected to the sliding block. The other end of the linkage rod is slidably arranged in the linkage groove.
[0009] By adopting the above technical solution, after the telescopic cylinder drives the cleaning cotton to abut against the surface of the ink-bearing roller, the rotating part drives the rotating shaft to rotate continuously. The linkage rod slides in the linkage groove. Since the linkage groove is wave-shaped, the linkage groove abuts against the linkage rod. At the same time, the linkage rod is guided by the sliding groove, so that the linkage rod continuously reciprocates in the sliding groove, and then drives the sliding block connected to the linkage rod to reciprocate on the mounting rod. By continuously rotating the rotating shaft, the cleaning cotton can be controlled to reciprocate on the surface of the ink-bearing roller.
[0010] Preferably, the rotating part includes a main synchronous pulley, a secondary synchronous pulley and a synchronous belt. The main synchronous pulley is arranged on the end wall of the ink-bearing roller. The secondary synchronous pulley is arranged on the end wall of the rotating shaft. The synchronous belt is jointly tensioned and sleeved on the main synchronous pulley and the secondary synchronous pulley.
[0011] By adopting the above technical solution, during cleaning, the driving element in the frame drives the ink-bearing roller to rotate on the frame. When the ink-bearing roller rotates, it drives the main synchronous pulley to rotate. The main synchronous pulley then drives the secondary synchronous pulley to rotate through the synchronous belt, and then drives the rotating shaft to rotate at the same time. By using the rotating part, the rotating shaft can be automatically driven to rotate when the ink-bearing roller rotates, and there is no need to separately control the element to control the rotation of the rotating shaft, saving the manufacturing cost of the equipment.
[0012] Preferably, a water tank is arranged on the side wall of the frame. The water tank is connected with a water pump. The water pump is connected with a water pipe. A sleeve is arranged on the mounting rod. A nozzle is arranged on one side of the cleaning block facing the cleaning cotton. The end of the water pipe away from the water pump penetrates through the sleeve and is communicated with the nozzle.
[0013] By adopting the above technical solution, when the cleaning cotton cleans the surface of the ink-carrying roller, the water pump transports the cleaning liquid in the water tank into the water pipe, and the nozzle sprays the cleaning liquid in the water pipe. The sleeve limits the position of the water pipe, and the water pipe can slide in the sleeve. The nozzle continuously sprays the cleaning liquid towards the cleaning cotton, which is beneficial to improving the cleaning effect of the cleaning cotton on the surface of the ink-carrying roller.
[0014] Preferably, a return plate is slidably arranged between the frames, and a sliding member for driving the return plate to slide is arranged on the frames; a guiding surface is arranged on the surface of the return plate, a return groove is arranged at the lowest end of the guiding surface, guiding blocks are arranged at both ends of the return plate, and guiding grooves for the guiding blocks to slide through are arranged through the surface of the frames. A return pipe is connected between one of the guiding blocks and the water tank, and the return pipe is communicated with the return groove.
[0015] Preferably, a filter is arranged between the return pipe and the water tank.
[0016] By adopting the above technical solution, when cleaning the ink-carrying roller, the sliding member is used to drive the return plate to slide on the frames, and the guiding blocks slide in the guiding grooves, so that the return plate slides to directly below the ink-carrying roller. After the nozzle sprays the cleaning liquid to clean the surface of the ink-carrying roller, the cleaning liquid will drip onto the return plate and be guided by the guiding surface to flow back into the return groove. Since the return groove is communicated with the return pipe, the cleaning liquid will flow back into the water tank through the return pipe after being filtered by the filter, thereby realizing the automatic recovery, filtration and reuse of the cleaning liquid, and achieving the effect of energy conservation and environmental protection.
[0017] Preferably, the sliding member is a sliding cylinder, the sliding cylinder is arranged on the side wall of the frame, and the piston rod of the sliding cylinder is connected with the guiding block.
[0018] By adopting the above technical solution, the piston rods of a group of sliding cylinders extend and retract simultaneously to drive the guiding blocks to slide in the guiding grooves, quickly controlling the return plate to slide on the frames. When it is necessary to clean the ink-carrying roller, the return plate is slid to directly below the ink-carrying roller, and when the ink-carrying roller needs to be used, the return plate is slid away from below the ink-carrying roller.
[0019] Preferably, the cleaning cotton and the cleaning block are detachably connected by a magic tape.
[0020] By adopting the above technical solution, it is convenient to clean and replace the cleaning cotton, ensuring that the cleaning cotton has a good cleaning effect.
[0021] In summary, the present application includes at least one of the following beneficial technical effects:
[0022] 1. By setting a frame, an ink-bearing roller, a mounting rod, a telescopic cylinder, a cleaning block, cleaning cotton, a sliding block and a sliding assembly, when it is necessary to replace the ink and clean the surface of the ink-bearing roller, the driving element in the frame is used to drive the ink-bearing roller to rotate on the frame, and the piston rod of the telescopic cylinder is extended to drive the cleaning cotton on the cleaning block to abut against the surface of the ink-bearing roller, and at the same time, the sliding assembly drives the sliding block to slide back and forth on the mounting rod along the length direction of the mounting rod, and then the cleaning cotton slides back and forth on the surface of the ink-bearing roller, and with the continuous rotation of the ink-bearing roller, the cleaning cotton can wipe and clean different positions on the surface of the ink-bearing roller, and at the same time, the cleaning effect is good, the control is convenient and quick, the manual labor is reduced, and the cleaning effect and cleaning efficiency are improved;
[0023] 2. By setting the main synchronous wheel, the secondary synchronous wheel, the synchronous belt, the rotating shaft and the linkage rod, during cleaning, the driving element in the frame drives the ink-bearing roller to rotate on the frame, and the rotation of the ink-bearing roller drives the main synchronous wheel and the secondary synchronous wheel to rotate at the same time, thereby driving the rotating shaft to rotate at the same time, and the linkage groove and the linkage rod are against each other. At the same time, the linkage rod is guided by the sliding groove, so that the linkage rod continuously slides back and forth in the sliding groove, thereby driving the sliding block connected to the linkage rod to slide back and forth on the mounting rod. The cleaning cotton can be controlled to slide back and forth on the surface of the ink-bearing roller by the continuous rotation of the rotating shaft, thereby saving the manufacturing cost of the equipment;
[0024] 3. By arranging a water tank, a water pump, a water pipe, a sleeve, a nozzle, a reflux plate, a sliding part, a guide surface, a reflux groove, a guide block, a guide groove, a reflux pipe and a filter, when the cleaning cotton cleans the surface of the ink-receiving roller, the water pump transports the cleaning liquid in the water tank to the water pipe, and the nozzle sprays the cleaning liquid in the water pipe, and the sliding frame drives the reflux plate to slide to the bottom of the ink-receiving roller, the cleaning liquid will drip onto the reflux plate and be guided by the guide surface to flow back into the reflux groove, and the cleaning liquid will pass through the reflux pipe and be filtered by the filter and flow back into the water tank, thereby realizing automatic recovery, filtration and reuse of the cleaning liquid, thereby achieving the effect of energy saving and environmental protection. BRIEF DESCRIPTION OF THE DRAWINGS
[0025] Figure 1 This is an overall diagram of an environmentally friendly water-based ink printing device disclosed in an embodiment of the present application.
[0026] Figure 2 This is a partial diagram of an environmentally friendly water-based ink printing device disclosed in an embodiment of the present application.
[0027] Description of reference numerals: 1, frame; 11, ink carrier roller; 2, mounting rod; 21, telescopic cylinder; 22, sleeve; 3, cleaning block; 31, cleaning cotton; 32, nozzle; 4, sliding block; 41, sliding groove; 5, sliding assembly; 51, rotating member; 511, main synchronous pulley; 512, secondary synchronous pulley; 513, synchronous belt; 52, rotating shaft; 521, linkage groove; 53, linkage rod; 6, water tank; 61, water pump; 62, water pipe; 7, return plate; 71, guiding surface; 711, return groove; 72, guiding block; 721, guiding groove; 8, return pipe; 81, filter; 9, sliding cylinder. Detailed implementation manners
[0028] The following further describes the present application in detail with reference to the Figure 1-2 accompanying drawings.
[0029] An embodiment of the present application discloses an environment-friendly water-based ink printing device. Referring to Figure 1 and Figure 2 , it includes a frame 1 and an ink carrier roller 11 rotatably arranged on the frame 1. A driving element in the frame 1 can drive the ink carrier roller 11 to rotate on the frame 1. A mounting rod 2 is fixedly arranged on the frame 1 by welding. The length direction of the mounting rod 2 is along the length direction of the ink carrier roller 11. A sliding block 4 is slidably arranged on the mounting rod 2, and a sliding assembly 5 is arranged on the frame 1. A group of telescopic cylinders 21 are symmetrically and fixedly arranged on the sliding block 4 by bolts. The piston rods of the telescopic cylinders 21 are commonly connected to a cleaning block 3. The length direction of the cleaning block 3 is along the length direction of the ink carrier roller 11. A cleaning cotton 31 is detachably connected to the cleaning block 3 by a magic tape. When it is necessary to replace the ink and clean the surface of the ink carrier roller 11, the driving element in the frame 1 drives the ink carrier roller 11 to rotate on the frame 1. The piston rods of the telescopic cylinders 21 extend to drive the cleaning block 3 away from the mounting rod 2. At this time, the cleaning cotton 31 on the cleaning block 3 will abut against the surface of the ink carrier roller 11. At the same time, the sliding assembly 5 drives the sliding block 4 to reciprocally slide along the length direction of the mounting rod 2 on the mounting rod 2. Then, the cleaning cotton 31 reciprocally slides on the surface of the ink carrier roller 11. Cooperating with the continuous rotation of the ink carrier roller 11, the cleaning cotton 31 can wipe and clean different positions on the surface of the ink carrier roller 11, without manual operation, and the control is convenient and fast.
[0030] Referring to Figure 1 and Figure 2, the sliding assembly 5 includes a rotating member 51, a rotating shaft 52 and a linkage rod 53. The rotating shaft 52 is rotatably arranged on the frame 1, and the length direction of the rotating shaft 52 is parallel to the length direction of the mounting rod 2. The rotating member 51 includes a main synchronous pulley 511, a secondary synchronous pulley 512 and a synchronous belt 513. The main synchronous pulley 511 is fixedly arranged on the end wall of the ink-carrying roller 11 and is coaxially arranged with the ink-carrying roller 11. The secondary synchronous pulley 512 is fixedly arranged on the end wall of the rotating shaft 52 and is coaxially arranged with the rotating shaft 52. The synchronous belt 513 is jointly tensioned and sleeved on the main synchronous pulley 511 and the secondary synchronous pulley 512. A sliding groove 41 for the linkage rod 53 to slide is formed in the side wall of the mounting rod 2 along its length direction. The linkage rod 53 penetrates through the sliding groove 41 and fits with the inner wall of the sliding groove 41. The linkage rod 53 is perpendicular to the mounting rod 2. A linkage groove 521 is formed on the surface of the rotating shaft 52, and the linkage groove 521 is arranged in a wavy shape. One end of the linkage rod 53 is fixedly connected to the sliding block 4, and the other end of the linkage rod 53 is slidably arranged in the linkage groove 521. When the telescopic cylinder 21 drives the cleaning cotton 31 to abut against the surface of the ink-carrying roller 11, the ink-carrying roller 11 rotates and drives the main synchronous pulley 511 to rotate at the same time. The main synchronous pulley 511 then drives the secondary synchronous pulley 512 to rotate through the synchronous belt 513, and further drives the rotating shaft 52 to rotate simultaneously. When the ink-carrying roller 11 rotates, the rotating member 51 automatically drives the rotating shaft 52 to rotate. The linkage rod 53 slides in the linkage groove 521. Since the linkage groove 521 is wavy and abuts against the linkage rod 53, and at the same time the linkage rod 53 is limited and guided by the sliding groove 41, the linkage rod 53 continuously reciprocates and slides in the sliding groove 41, and then drives the sliding block 4 connected to the linkage rod 53 to reciprocate and slide on the mounting rod 2. By continuously rotating the rotating shaft 52, the cleaning cotton 31 can be controlled to reciprocate and slide on the surface of the ink-carrying roller 11. The control is convenient and fast, and at the same time, the manufacturing cost of the equipment is low.
[0031] Refer to Figure 1 and Figure 2 , a water tank 6 is arranged on the side wall of the frame 1. The water tank 6 is connected with a water pump 61, and the water pump 61 is connected with a water pipe 62. The water pipe 62 is a flexible pipe. A sleeve 22 is fixedly welded on the mounting rod 2. A nozzle 32 is arranged on one side of the cleaning block 3 facing the cleaning cotton 31. One end of the water pipe 62 far away from the water pump 61 penetrates through the sleeve 22 and is communicated with the nozzle 32. When the cleaning cotton 31 cleans the surface of the ink-carrying roller 11, the water pump 61 transports the cleaning liquid in the water tank 6 into the water pipe 62, and the nozzle 32 sprays out the cleaning liquid in the water pipe 62. At the same time, the sleeve 22 limits the water pipe 62. The water pipe 62 can slide in the sleeve 22, and the nozzle 32 continuously sprays out the cleaning liquid towards the cleaning cotton 31, which is beneficial to improving the cleaning effect of the cleaning cotton 31 on the surface of the ink-carrying roller 11.
[0032] Refer to Figure 1 and Figure 2, a return plate 7 is slidably arranged between the frames 1, guide blocks 72 are arranged at both ends of the return plate 7, and a guide groove 721 for the guide block 72 to slide is arranged through the surface of the frame 1, and the length direction of the guide groove 721 is arranged along the length direction of the frame 1. A sliding member is arranged on the frame 1, and the sliding member is a sliding cylinder 9. The sliding cylinder 9 is arranged on the side wall of the frame 1, and the piston rod of the sliding cylinder 9 is connected to the guide block 72. The guide block 72 is driven to slide in the guide groove 721 by a group of piston rods of the sliding cylinder 9 extending and retracting at the same time, and the return plate 7 is quickly controlled to slide on the frame 1. When the ink receiving roller 11 needs to be cleaned, the return plate 7 is slid to the bottom of the ink receiving roller 11, and when the ink receiving roller 11 needs to be used, the return plate 7 is slid away from the bottom of the ink receiving roller 11.
[0033] Reference Figure 1 and Figure 2 The surface of the return plate 7 is inclinedly provided with a guide surface 71, and the lowest end of the guide surface 71 is provided with a return groove 711. A return pipe 8 is connected between one of the guide blocks 72 and the water tank 6. The return pipe 8 and the return groove 711 are interconnected, and a filter 81 is provided between the return pipe 8 and the water tank 6. When cleaning the ink receiving roller 11, the sliding cylinder 9 is used to drive the return plate 7 to slide on the frame 1, so that the return plate 7 slides to the bottom of the ink receiving roller 11. After the nozzle 32 sprays the cleaning liquid to clean the surface of the ink receiving roller 11, the cleaning liquid will drip on the return plate 7 and be guided by the guide surface 71 to flow back into the return groove 711. Since the return groove 711 is interconnected with the return pipe 8, the cleaning liquid will flow back into the water tank 6 through the return pipe 8 and the filter 81, thereby realizing automatic recovery, filtration and reuse of the cleaning liquid, achieving the effect of energy saving and environmental protection.
[0034] The implementation principle of an environmentally friendly water-based ink printing device in the embodiment of the present application is as follows: when the ink needs to be replaced and the surface of the ink receiving roller 11 needs to be cleaned, the driving element in the frame 1 is used to drive the ink receiving roller 11 to rotate on the frame 1, and the piston rod of the telescopic cylinder 21 is extended to drive the cleaning block 3 away from the mounting rod 2, at which time the cleaning cotton 31 on the cleaning block 3 will abut against the surface of the ink receiving roller 11; at the same time, the rotation of the ink receiving roller 11 drives the main synchronous wheel 511 to rotate, and the synchronous belt 513 drives the rotating shaft 52 to rotate, and the linkage groove 521 abuts against the linkage rod 53, and the linkage rod 53 is guided by the sliding groove 41. The linkage rod 53 is continuously slid back and forth in the sliding groove 41, thereby driving the sliding block 4 connected to the linkage rod 53 to slide back and forth on the mounting rod 2 along the length direction of the mounting rod 2; the cleaning cotton 31 is automatically controlled to slide back and forth on the surface of the ink receiving roller 11, and with the continuous rotation of the ink receiving roller 11, the cleaning cotton 31 can wipe and clean different positions on the surface of the ink receiving roller 11; and the nozzle 32 sprays the cleaning liquid in the water tank 6, and the reflux plate 7 recycles and reuses the cleaning liquid, thereby improving the cleaning effect and cleaning efficiency, being convenient and quick to control, reducing manual labor, and having a low production cost, which is beneficial to energy saving and environmental protection.
[0035] The above are all preferred embodiments of this application, and do not limit the protection scope of this application accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of this application shall be covered within the protection scope of this application.
Claims
1. An environmentally friendly water-based ink printing device, comprising a frame (1) and an ink receiving roller (11) rotatably arranged on the frame (1), characterized in that: The frame (1) is provided with a mounting rod (2), a group of telescopic cylinders (21) are symmetrically provided on the mounting rod (2), piston rods of the telescopic cylinders (21) are commonly connected to a cleaning block (3), the length direction of the cleaning block (3) is arranged along the length direction of the ink receiving roller (11), the cleaning block (3) is provided with cleaning cotton (31), and the cleaning cotton (31) can be abutted against the surface of the ink receiving roller (11); a sliding block (4) is slidably provided on the mounting rod (2), the telescopic cylinder (21) is arranged on the sliding block (4), and a sliding assembly (5) for driving the sliding block (4) to slide back and forth on the mounting rod (2) along the length direction of the mounting rod (2) is provided on the frame (1).
2. The environmentally friendly water-based ink printing device according to claim 1, characterized in that: The sliding assembly (5) comprises a rotating member (51), a rotating shaft (52) and a linkage rod (53); the rotating shaft (52) is rotatably arranged on the frame (1); the rotating member (51) is arranged on the frame (1); the rotating member (51) is used to drive the rotating shaft (52) to rotate; a sliding groove (41) for the linkage rod (53) to slide is provided on the side wall of the mounting rod (2); the linkage rod (53) passes through the sliding groove (41); a linkage groove (521) is provided on the surface of the rotating shaft (52); the linkage groove (521) is arranged in a wave shape; one end of the linkage rod (53) is connected and fixed to the sliding block (4); the other end of the linkage rod (53) is slidably arranged in the linkage groove (521).
3. The environmentally friendly water-based ink printing device according to claim 2, characterized in that: The rotating member (51) comprises a main synchronous wheel (511), a secondary synchronous wheel (512) and a synchronous belt (513); the main synchronous wheel (511) is arranged on the end wall of the ink receiving roller (11); the secondary synchronous wheel (512) is arranged on the end wall of the rotating shaft (52); and the synchronous belt (513) is tensioned and sleeved on the main synchronous wheel (511) and the secondary synchronous wheel (512).
4. The environmentally friendly water-based ink printing device according to claim 1, characterized in that: A water tank (6) is arranged on the side wall of the frame (1), the water tank (6) is connected to a water pump (61), the water pump (61) is connected to a water pipe (62), a sleeve (22) is arranged on the mounting rod (2), a nozzle (32) is arranged on the side of the cleaning block (3) facing the cleaning cotton (31), and an end of the water pipe (62) away from the water pump (61) passes through the sleeve (22) and is in communication with the nozzle (32).
5. The environmentally friendly water-based ink printing device according to claim 4, characterized in that: A return plate (7) is slidably arranged between the frames (1), and a sliding member for driving the return plate (7) to slide is arranged on the frame (1); a guide surface (71) is arranged on the surface of the return plate (7), and a return groove (711) is arranged at the lowest end of the guide surface (71); guide blocks (72) are arranged at both ends of the return plate (7); a guide groove (721) for the guide block (72) to slide is arranged through the surface of the frame (1), and a return pipe (8) is connected between one of the guide blocks (72) and the water tank (6), and the return pipe (8) and the return groove (711) are communicated with each other.
6. The environmentally friendly water-based ink printing device according to claim 5, characterized in that: A filter (81) is provided between the return pipe (8) and the water tank (6).
7. The environmentally friendly water-based ink printing device according to claim 5, characterized in that: The sliding member is a sliding cylinder (9), which is arranged on the side wall of the frame (1), and the piston rod of the sliding cylinder (9) is connected to the guide block (72).
8. The environmentally friendly water-based ink printing device according to claim 1, characterized in that: The cleaning cotton (31) and the cleaning block (3) are detachably connected via Velcro.