Integrated waterway doctor blade self-cleaning mechanism
By integrating a water-channel self-cleaning mechanism for the doctor blade, the self-cleaning of the doctor blade is achieved through water pump supply and angle adjustment mechanism, which solves the problem of ink drying on the doctor blade and improves the stability and cleaning efficiency of printing equipment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGXI HONGDA DIGITAL TECHNOLOGY CO LTD
- Filing Date
- 2025-08-15
- Publication Date
- 2026-05-29
AI Technical Summary
The ink on the doctor blade is prone to drying out after use, which may damage the printhead when doctoring next time, and the cleaning work is also very demanding.
The design integrates a water-channel self-cleaning mechanism for the scraper blade. Water is supplied by a water pump, and the scraper blade is cleaned under gravity using water channels and an angle adjustment mechanism, which prevents ink from clumping and reduces the amount of manual cleaning required.
It achieves a self-cleaning function for the doctor blade, preventing ink clumping from damaging the printhead, reducing the cleaning burden, and improving the stability and quality of printing equipment.
Smart Images

Figure CN224296846U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of printing equipment technology, and in particular to an integrated water channel scraper self-cleaning mechanism. Background Technology
[0002] In printing equipment (especially inkjet printing systems), the doctor blade (also called a scraper or wiper) is a core component for maintaining the stability of the printhead and the quality of prints. After the printhead has finished printing, ink droplets or ink splatter can easily remain around the nozzle. The doctor blade uses precise mechanical movement to horizontally scrape the surface of the printhead, physically removing any unsprayed ink and preventing the ink from drying, clumping, and clogging the nozzle.
[0003] In daily use, the doctor blade needs to be cleaned promptly after each use; otherwise, the ink on the doctor blade will dry and harden, making it easy to damage the printhead during the next use. Utility Model Content
[0004] The purpose of this invention is to provide an integrated water channel self-cleaning mechanism for the doctor blade, in order to solve the problem mentioned in the background art of ink drying on the doctor blade and easy damage to the print head during the next doctor blade cleaning.
[0005] To achieve the above objectives, this utility model provides the following technical solution: an integrated water channel self-cleaning mechanism for the ink scraper, including an ink cartridge. A water inlet is provided on one outer wall of the ink cartridge, and a water channel is provided inside this side wall, connected to the water inlet. Several rotating shafts are rotatably mounted on the ink cartridge. Each rotating shaft is hollow and connected to the water channel. Each rotating shaft is equipped with an ink scraper seat, with the ink scraper seats on every two adjacent rotating shafts staggered. Each ink scraper seat has a connecting hole connected to the interior of the rotating shaft. Each ink scraper seat is equipped with a scraper blade for scraping ink. An angle adjustment mechanism is provided on the ink cartridge, and the rotating shafts are connected to the angle adjustment mechanism.
[0006] Preferably, the angle adjustment mechanism includes an electric telescopic rod disposed on the outer wall of the ink cartridge. A movable shaft is connected to the output shaft of the electric telescopic rod, and a plurality of adjusting rods are slidably connected to the movable shaft. The other ends of the plurality of adjusting rods are rotatably connected to the wall of the ink cartridge. A connecting groove is provided on the adjusting rod, and a connecting rod is slidably adapted in the connecting groove. The other end of the connecting rod is connected to the end face of the rotating shaft.
[0007] Preferably, a plurality of U-shaped connectors are provided on the lower wall of the movable shaft, and a first connecting block is slidably connected in each of the plurality of U-shaped connectors, and the first connecting block is rotatably connected to the end of the adjusting rod.
[0008] Preferably, each of the connecting rods has a second connecting block rotatably connected to the end away from the pivot, and the second connecting block is slidably adapted in the connecting groove.
[0009] Preferably, each of the plurality of rotating shafts is provided with a bearing at both ends, and the bearings are disposed on the two side walls of the ink cartridge.
[0010] Preferably, each of the several rotating shafts is provided with an oil seal at one end near the water inlet.
[0011] Preferably, the bottom of the ink cartridge is recessed, and a drain outlet is provided at the lower middle part of the ink cartridge, which is connected to the interior of the ink cartridge.
[0012] The beneficial effects of this utility model are:
[0013] In this invention, a flexible hose connects to the water inlet, allowing water to enter through the inlet, flow into the rotating shaft via the water channel, and then into the scraper holder through the connecting hole. An angle adjustment mechanism then rotates several shafts, causing the top of the scraper to be positioned downwards. Under gravity, the water in the scraper holder flows downwards along the scraper through the connecting hole. This water flow cleans the scraper, preventing ink from clumping and damaging the printhead during scraping. It also reduces the workload of cleaning the scraper and achieves a self-cleaning function. Attached Figure Description
[0014] Figure 1 This is a three-dimensional structural diagram of the integrated water channel scraper self-cleaning mechanism proposed in this utility model;
[0015] Figure 2 This is a schematic diagram of the angle adjustment mechanism of the integrated water channel scraper self-cleaning mechanism proposed in this utility model.
[0016] Figure 3 This is a cross-sectional structural diagram of the water channel and ink cartridge of the integrated water channel scraper self-cleaning mechanism proposed in this utility model.
[0017] Figure 4 This is a side cross-sectional view of the scraper seat and scraper of the integrated water channel scraper self-cleaning mechanism proposed in this utility model.
[0018] Figure 5 This is a top view cross-sectional structural diagram of the rotating shaft of the integrated water channel scraper self-cleaning mechanism proposed in this utility model.
[0019] In the diagram: 1. Ink cartridge; 2. Shaft; 3. Squeegee holder; 4. Connecting channel; 5. Squeegee; 6. Water inlet; 7. Water channel; 8. Angle adjustment mechanism; 9. Bearing; 10. Drain outlet; 11. Oil seal;
[0020] 81. Electric telescopic rod; 82. Moving shaft; 83. Adjusting rod; 84. Connecting groove; 85. Connecting rod; 86. U-shaped connector; 87. First connecting block; 88. Second connecting block. Detailed Implementation
[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0022] Reference Figure 1-5 The integrated water channel self-cleaning mechanism for the ink scraper includes an ink cartridge 1. An inlet 6 is provided on one outer wall of the ink cartridge 1. A water channel 7 is provided inside the same outer wall of the ink cartridge 1, and the water channel 7 is connected to the inlet 6. Several rotating shafts 2 are rotatably mounted on the ink cartridge 1. The interior of each rotating shaft 2 is hollow and connected to the water channel 7. Each rotating shaft 2 is equipped with a scraper seat 3. The scraper seats 3 on every two adjacent rotating shafts 2 are staggered. Each of the scraper seats 3 is provided with a connecting channel 4, which is connected to the interior of the rotating shaft 2. Each of the scraper seats 3 is equipped with a scraper blade 5 for scraping ink. An angle adjustment mechanism 8 is provided on the ink cartridge 1, and the rotating shafts 2 are all connected to the angle adjustment mechanism 8.
[0023] When in use, the device is supplied with water by a water pump (not shown in the figure). The water is connected to the inlet 6 through a hose, allowing water to enter through the inlet 6, flow into the rotating shaft 2 through the water channel 7, and enter the scraper seat 3 through the connecting hole 4. Then, the angle adjustment mechanism 8 drives several rotating shafts 2 to rotate 180°, so that the top of the scraper 5 is at the bottom. Under the action of gravity, the water in the scraper seat 3 flows down the scraper 5 through the connecting hole 4. The water flows on the scraper 5 to clean it, preventing ink from clumping on the scraper 5 and damaging the print head during scraping. It also reduces the workload of cleaning the scraper and realizes the self-cleaning function of the scraper.
[0024] Specifically, in this embodiment, the angle adjustment mechanism 8 includes an electric telescopic rod 81 disposed on the outer wall of the ink cartridge 1. A movable shaft 82 is connected to the output shaft of the electric telescopic rod 81. A plurality of adjustment rods 83 are slidably connected to the movable shaft 82. The other ends of the plurality of adjustment rods 83 are rotatably connected to the wall of the ink cartridge 1. A connecting groove 84 is provided on the adjustment rod 83. A connecting rod 85 is slidably adapted in the connecting groove 84. The other end of the connecting rod 85 is connected to the end face of the rotating shaft 2.
[0025] When the angle of the rotating shaft 2 needs to be adjusted, the output end of the electric telescopic rod 81 is extended, driving the moving shaft 82 to move forward, thereby causing several adjusting rods 83 slidably connected to the moving shaft 82 to rotate, so that the connecting rod 85 slidably connected in the connecting groove 84 rotates around the rotating shaft 2, thereby driving the rotating shaft 2 to rotate synchronously, thus achieving the purpose of adjusting the angle of the rotating shaft 2, so as to cooperate with the water flow to clean the scraper 5.
[0026] Specifically, in this embodiment, a plurality of U-shaped connectors 86 are provided on the lower wall surface of the movable shaft 82, and a first connecting block 87 is slidably connected within each of the U-shaped connectors 86. The first connecting block 87 is rotatably connected to the end of the adjusting rod 83. This allows the adjusting rod 83 to be slidably connected to the U-shaped connectors 86 via the first connecting block 87, ensuring a stable connection between the adjusting rod 83 and the movable shaft 82 when the movable shaft 82 moves and drives the adjusting rod 83 to rotate.
[0027] Specifically, in this embodiment, a number of connecting rods 85 are rotatably connected to a second connecting block 88 at the end away from the rotating shaft 2. The second connecting block 88 is slidably adapted in the connecting groove 84, so that the connecting rod 85 can be slidably adapted in the connecting groove 84 through the second connecting block 88, thereby enabling the adjusting rod 83 to drive the connecting rod 85 to rotate synchronously when it rotates.
[0028] Specifically, in this embodiment, bearings 9 are provided at both ends of several rotating shafts 2, and the bearings 9 are disposed on the side walls of the ink cartridge 1. The bearings 9 enable the rotating shafts 2 to be rotatably connected to the ink cartridge 1, thereby ensuring the rotation of the rotating shafts 2.
[0029] Specifically, in this embodiment, each of the several rotating shafts 2 is provided with an oil seal 11 at one end near the water inlet 6. The oil seal 11 is used to seal the rotating shaft 2, thereby preventing water leakage inside the rotating shaft 2.
[0030] Specifically, in this embodiment, the bottom of the ink cartridge 1 is recessed, and a drain outlet 10 is provided at the lower middle part of the ink cartridge 1. The drain outlet 10 is connected to the inside of the ink cartridge 1, so that the wastewater left in the ink cartridge 1 after use can gather at the bottom of the ink cartridge 1 and then be discharged through the drain outlet 10, thereby achieving the purpose of cleaning the wastewater.
[0031] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.
Claims
1. An integrated water channel scraper self-cleaning mechanism, including an ink cartridge (1), characterized in that: A water inlet (6) is provided on one side of the outer wall of the ink cartridge (1). A water channel (7) is provided inside the side wall of the ink cartridge (1). The water channel (7) is connected to the water inlet (6). Several rotating shafts (2) are rotatably provided on the ink cartridge (1). The rotating shafts (2) are hollow inside and are connected to the water channel (7). Each rotating shaft (2) is provided with a scraper seat (3). The scraper seats (3) on each two adjacent rotating shafts (2) are staggered. Each of the scraper seats (3) is provided with a connecting hole (4). The connecting hole (4) is connected to the inside of the rotating shaft (2). Each of the scraper seats (3) is provided with a scraper blade (5) for scraping ink. An angle adjustment mechanism (8) is provided on the ink cartridge (1). The rotating shafts (2) are all connected to the angle adjustment mechanism (8).
2. The integrated water channel scraper self-cleaning mechanism according to claim 1, characterized in that: The angle adjustment mechanism (8) includes an electric telescopic rod (81) set on the outer wall of the ink cartridge (1). A movable shaft (82) is connected to the output shaft of the electric telescopic rod (81). Several adjusting rods (83) are slidably connected to the movable shaft (82). The other end of the several adjusting rods (83) is rotatably connected to the wall of the ink cartridge (1). A connecting groove (84) is provided on the adjusting rod (83). A connecting rod (85) is slidably adapted in the connecting groove (84). The other end of the connecting rod (85) is connected to the end face of the rotating shaft (2).
3. The integrated water channel scraper self-cleaning mechanism according to claim 2, characterized in that: The lower wall of the movable shaft (82) is provided with a plurality of U-shaped connectors (86), and a first connecting block (87) is slidably connected in each of the plurality of U-shaped connectors (86). The first connecting block (87) is rotatably connected to the end of the adjusting rod (83).
4. The integrated water channel scraper self-cleaning mechanism according to claim 2, characterized in that: Each of the connecting rods (85) is rotatably connected to a second connecting block (88) at the end away from the pivot (2), and the second connecting block (88) is slidably fitted in the connecting groove (84).
5. The integrated water channel scraper self-cleaning mechanism according to claim 1, characterized in that: Each of the aforementioned rotating shafts (2) is provided with a bearing (9) at both ends, and the bearing (9) is provided on both sides of the ink cartridge (1).
6. The integrated water channel scraper self-cleaning mechanism according to claim 1, characterized in that: Each of the aforementioned rotating shafts (2) is provided with an oil seal (11) at one end near the water inlet (6).
7. The integrated water channel scraper self-cleaning mechanism according to claim 1, characterized in that: The bottom of the ink cartridge (1) is recessed, and a drain outlet (10) is provided at the lower middle part of the ink cartridge (1). The drain outlet (10) is connected to the interior of the ink cartridge (1).