An ink supply device for an inkjet printer

Abstract

This utility model discloses an ink supply device for an inkjet printer, relating to the field of inkjet printer technology. It includes an ink reservoir with a filling port at its upper end. Flat pressure ports are located on both sides of the filling port at the upper end of the ink reservoir. Guide rails are fixedly connected to the inner walls of the front and rear sides of the ink reservoir. Upper and lower limit plates are fixedly connected to the upper and lower ends of the guide rails, respectively. A flat pressure lifting plate is slidably connected to the outer surface of the guide rails. A feeding tube is connected to the upper surface of the flat pressure lifting plate. The feeding tube passes through the filling port and extends to the outside of the ink reservoir. A sealing cap is threaded to the upper end of the feeding tube, and a rotating handle is fixedly connected to the upper end of the sealing cap. The advantage of this utility model is that the flat pressure lifting plate can move up and down according to changes in ink volume, effectively balancing the air pressure inside the ink reservoir in conjunction with the flat pressure ports, ensuring continuous and stable ink supply.

Description

Technical Field

[0001] This utility model relates to the field of inkjet printer technology, specifically to an ink supply device for an inkjet printer. Background Technology

[0002] An inkjet printer is a device that forms images or text by spraying ink onto a medium such as paper. The ink supply unit, as the core component of an inkjet printer, primarily functions to store ink and, according to the printer's instructions, stably and accurately deliver the ink to the printhead to achieve high-quality print output. The performance of the ink supply unit directly affects the inkjet printer's print quality, printing efficiency, and operating costs.

[0003] In existing ink supply devices, the ink level drops during ink supply, causing a decrease in air pressure inside the ink reservoir, which creates negative pressure. As a result, the printhead cannot obtain a sufficient and stable ink supply, leading to intermittent printing. In severe cases, ink supply may even be interrupted, affecting the normal operation of printing tasks. Therefore, an ink supply device for inkjet printers is proposed to solve the problems mentioned above. Utility Model Content

[0004] To solve the above-mentioned technical problems, an ink supply device for inkjet printers is provided. This technical solution solves the problem of ink supply interruption caused by the drop in internal air pressure during the ink supply process of the ink reservoir mentioned in the background art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] An ink supply device for an inkjet printer includes an ink reservoir. The upper end of the ink reservoir has a filling port. Guide rails are fixedly connected to the inner walls of the front and rear sides of the ink reservoir. An upper limit plate and a lower limit plate are fixedly connected to the upper and lower ends of the guide rails, respectively. A flat pressure lifting plate is slidably connected to the outer surface of the guide rails. A feeding tube is connected to the upper surface of the flat pressure lifting plate. The feeding tube passes through the filling port and extends to the outside of the ink reservoir. A sealing cap is threaded to the upper end of the feeding tube. A rotating handle is fixedly connected to the upper end of the sealing cap.

[0007] Preferably, a connecting pipe is fixedly installed at the left end of the ink storage box, the output end of the connecting pipe is connected to a discharge pipe, the input end of the connecting pipe is connected to a pump body, and the other end of the pump body is connected to the left end of the ink storage box.

[0008] Preferably, a drive motor is fixedly installed at the front end of the ink storage box, the output end of the drive motor passes through the front end of the ink storage box and is fixedly connected to a threaded rod, the other end of the threaded rod is rotatably connected to the rear inner wall of the ink storage box, and a scraper is threadedly connected to the outer surface of the threaded rod.

[0009] Preferably, guide rods are fixedly connected to the inner walls of the front and rear sides of the ink storage box on both sides of the threaded rod, and the guide rods are slidably connected to the scraper.

[0010] Preferably, the bottom end of the scraper abuts against the inner wall of the bottom side of the ink reservoir.

[0011] Preferably, the upper end of the ink storage box has flat pressure ports on both the left and right sides of the feeding port.

[0012] Compared with the prior art, this utility model provides an ink supply device for inkjet printers, which has the following advantages:

[0013] This invention features a flat-pressure lifting plate that moves up and down with changes in ink volume. Combined with the flat-pressure port, it effectively balances the air pressure inside the ink reservoir, ensuring continuous and stable ink supply.

[0014] This invention features a scraper that, in conjunction with a drive motor, threaded rod, and guide rod, moves back and forth at the bottom of the ink reservoir to prevent ink from settling at the bottom, ensuring ink uniformity and avoiding inconsistent ink concentration caused by settling that could affect print quality. Attached Figure Description

[0015] Figure 1 This is an overall structural diagram of the present invention;

[0016] Figure 2 This is a front view of the present invention;

[0017] Figure 3 This is a cross-sectional structural diagram of the present invention;

[0018] Figure 4 This is a cross-sectional view of the present invention.

[0019] The numbers on the map are:

[0020] 1. Ink cartridge; 2. Connecting pipe; 3. Pump body; 4. Discharge pipe; 5. Drive motor; 6. Threaded rod; 7. Guide rod; 8. Scraper; 9. Feed port; 10. Guide rail; 11. Lower limit plate; 12. Upper limit plate; 13. Flat pressure lifting plate; 14. Feed pipe; 15. Sealing cover; 16. Rotating handle; 17. Flat pressure port; Detailed Implementation

[0021] The following description is intended to disclose the present invention so that those skilled in the art can implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art.

[0022] Reference Figures 1-4As shown, an ink supply device for an inkjet printer includes an ink reservoir 1. The upper end of the ink reservoir 1 has a feeding port 9. Guide rails 10 are fixedly connected to the inner walls of the front and rear sides of the ink reservoir 1. The upper and lower ends of the guide rails 10 are respectively fixedly connected to an upper limit plate 12 and a lower limit plate 11. A flat lifting plate 13 is slidably connected to the outer surface of the guide rails 10. The flat lifting plate 13 moves up and down along the guide rails 10 as the amount of ink in the ink reservoir 1 changes. The guide rails 10 provide a track for the up and down sliding of the flat lifting plate 13. A feeding tube 14 is connected to the upper surface of the flat lifting plate 13. Ink can be added to the ink reservoir 1 through the feeding tube 14. The feeding tube 14 passes through the feeding port 9 and extends to the outside of the ink reservoir 1. A sealing cap 15 is threaded to the upper end of the feeding tube 14. The sealing cap 15 is used to seal the feeding tube 14 when no ink is added to prevent the ink in the ink reservoir 1 from evaporating and prevent external dust and other impurities from entering the ink reservoir 1. A rotating handle 16 is fixedly connected to the upper end of the sealing cover 15. The rotating handle 16 makes it easier for the user to rotate the sealing cover 15, making the operation of unscrewing and tightening the sealing cover 15 easier.

[0023] Furthermore, a connecting pipe 2 is fixedly installed on the left end of the ink storage cartridge 1. The output end of the connecting pipe 2 is connected to the discharge pipe 4, and the input end of the connecting pipe 2 is connected to the pump body 3. The other end of the pump body 3 is connected to the left end of the ink storage cartridge 1, providing a power unit. One end of the pump body 3 is connected to the left end of the ink storage cartridge 1, and the other end is connected to the discharge pipe 4 through the connecting pipe 2. During operation, the pump body 3 starts to generate suction, drawing the ink out of the ink storage cartridge 1 and pressing it into the discharge pipe 4 through the connecting pipe 2, thus providing power for ink supply.

[0024] Furthermore, a drive motor 5 is fixedly installed at the front end of the ink storage box 1. The output end of the drive motor 5 passes through the front end of the ink storage box 1 and is fixedly connected to a threaded rod 6. The other end of the threaded rod 6 is rotatably connected to the rear inner wall of the ink storage box 1. A scraper 8 is threadedly connected to the outer surface of the threaded rod 6. Guide rods 7 are fixedly connected between the front and rear inner walls of the ink storage box 1 on both the left and right sides of the threaded rod 6. The guide rods 7 are slidably connected to the scraper 8. The bottom end of the scraper 8 abuts against the bottom inner wall of the ink storage box 1. Driven by the threaded rod 6, the scraper 8 moves along the guide rod 7 at the bottom of the ink storage box 1 to scrape up the deposited ink and make the ink evenly distributed, thereby preventing ink from depositing at the bottom of the ink storage box.

[0025] Furthermore, the upper end of the ink storage box 1 is provided with flat pressure ports 17 on both the left and right sides of the feeding port 9. The flat pressure ports 17 are used to balance the air pressure above the flat pressure lifting plate 13, so that the flat pressure lifting plate 13 can move up and down smoothly with the change of ink volume.

[0026] Working Principle: When using this invention, first install the device on the printer. Unscrew the sealing cover 15 by turning the handle 16, and add an appropriate amount of ink to the ink storage box 1 through the feeding tube 14 and the feeding port 9. After adding the ink, tighten the sealing cover 15 by turning the handle 16 again, start the pump body 3 and the drive motor 5. The pump body 3 generates suction to draw the ink out of the ink storage box 1, press it into the discharge tube 4 through the connecting tube 2, and finally deliver it to the print head of the printer for printing. At the same time, the drive motor 5 drives the threaded rod 6 to rotate, causing the scraper 8 to move back and forth along the guide rod 7 at the bottom of the ink storage box 1 to prevent ink deposition. As the amount of ink in the ink storage box 1 decreases, the flat pressure lifting plate 13 moves downward along the guide rail 10 under its own weight and other forces, cooperating with the flat pressure port 17 to balance the internal air pressure of the ink storage box 1 and ensure a continuous and stable ink supply. After printing is completed, turn off the pump body 3 and the drive motor 5. If the device is not used for a long time, check the amount of ink in the ink storage box 1. If it needs to be replenished, add ink according to the initial preparation steps, and ensure that the sealing cover 15 is tightened.

[0027] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An ink supply device for an inkjet printer, characterized by comprising: The ink storage box (1) is provided with a feeding port (9) at the upper end. The inner walls of the front and rear sides of the ink storage box (1) are fixedly connected with guide rails (10). The upper and lower ends of the guide rails (10) are fixedly connected with an upper limit plate (12) and a lower limit plate (11), respectively. The outer surface of the guide rails (10) is slidably connected with a flat pressure lifting plate (13). The upper surface of the flat pressure lifting plate (13) is connected to a feeding tube (14). The feeding tube (14) passes through the feeding port (9) and extends to the outside of the ink storage box (1). The upper end of the feeding tube (14) is threadedly connected with a sealing cap (15). The upper end of the sealing cap (15) is fixedly connected with a rotating handle (16).

2. The ink supply device for an inkjet printer according to claim 1, characterized by: A connecting pipe (2) is fixedly installed on the left end of the ink storage box (1). The output end of the connecting pipe (2) is connected to the discharge pipe (4). The input end of the connecting pipe (2) is connected to the pump body (3). The other end of the pump body (3) is connected to the left end of the ink storage box (1).

3. The ink supply device for an inkjet printer according to claim 1, characterized by: A drive motor (5) is fixedly installed at the front end of the ink storage box (1). The output end of the drive motor (5) passes through the front end of the ink storage box (1) and is fixedly connected to a threaded rod (6). The other end of the threaded rod (6) is rotatably connected to the inner rear wall of the ink storage box (1). A scraper (8) is threadedly connected to the outer surface of the threaded rod (6).

4. The ink supply device for an inkjet printer according to claim 3, characterized in that: Guide rods (7) are fixedly connected to the inner walls of the front and rear sides of the ink storage box (1) on both sides of the threaded rod (6), and the guide rods (7) are slidably connected to the scraper (8).

5. The ink supply device for an inkjet printer according to claim 3, characterized by: The bottom end of the scraper (8) abuts against the inner wall of the bottom side of the ink storage box (1).

6. The ink supply device for an inkjet printer according to claim 3, characterized by: The upper end of the ink storage box (1) is provided with flat pressure ports (17) on both the left and right sides of the feeding port (9).

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