An ink printing device capable of adjusting a printing thickness

Abstract

The utility model discloses an ink printing device of adjustable printing thickness, containing work table, two axle moving mechanism are equipped on the table, including vertical movement subassembly and transverse movement subassembly, transverse subassembly sliding guide rail connects silk screen printing plate, and moving plate connects mounting plate, and two electric push rods of board are connected respectively and scrape board, ink return plate subassembly, and board side slide rail connects sliding plate, and scrape board subassembly has installation shell, scrape board, worm wheel, worm, is connected with driving motor, and the lower part of silk screen printing plate is equipped with printing material platform, and it contains cavity, vacuum adsorption hole, and is connected with external vacuum generator, and the printing material is fixed with vacuum, and driving motor adjusts scrape board angle, and electric push rod adjusts pressure, and two axle mechanism adjusts position, and scrape board scrapes and coats, and ink return plate returns ink, the utility model can accurately adjust printing thickness, and the positioning of printing material is stable, and the movement transmission is stable, and convenient operation can satisfy different ink printing demand, and the utility model improves printing quality and efficiency.

Description

Technical Field

[0001] This utility model relates to the field of ink printing technology, specifically to an ink printing device with adjustable printing thickness. Background Technology

[0002] In the field of ink printing technology, precise control of printing thickness directly affects the appearance quality, color uniformity, and functional performance of printed materials (such as the conductivity of conductive inks and the recognizability of anti-counterfeiting inks). However, existing ink printing devices have many technical limitations in practical applications. For example, the squeegee angle of traditional printing devices is mostly fixed and cannot be flexibly adjusted according to ink viscosity, substrate material (such as paper, plastic, and metal), or printing pattern requirements. If the printing thickness needs to be changed, the squeegee or shim must be manually disassembled and replaced, which is not only time-consuming and labor-intensive, but also makes it difficult to achieve precise control of minute angles, resulting in poor printing thickness consistency and problems such as missing prints and excessive accumulation. Utility Model Content

[0003] The purpose of this invention is to solve the problems of the inflexible adjustment of the squeegee angle and the cumbersome adjustment of the printing thickness in traditional printing devices, and to provide an ink printing device with adjustable printing thickness.

[0004] This utility model achieves the above-mentioned objective through the following technical solution: an ink printing device with adjustable printing thickness, comprising a worktable, a two-axis moving mechanism on the top of the worktable, the two-axis moving mechanism comprising a vertical moving component and a horizontal moving component, the two ends of the sliding guide rail of the horizontal moving component being connected to a screen printing plate via a connecting plate, one end of the moving plate of the horizontal moving component being connected to a mounting plate, two electric push rods being mounted on the top of the mounting plate, one end of the telescopic rods of the two electric push rods being respectively connected to a scraper assembly and an ink return plate assembly; the scraper assembly comprising a mounting shell with a bottom opening, a scraper being disposed inside the mounting shell, the scraper being rotatably mounted inside the mounting shell via a top rotating shaft, a worm gear being fixedly disposed at the center position of the rotating shaft of the scraper, a worm being rotatably disposed above the worm gear via a transmission connection, the worm being rotatably disposed inside the mounting shell, a drive motor connected to the worm being mounted on the outer surface of the mounting shell; a substrate platform is disposed on the worktable below the screen printing plate.

[0005] Furthermore, sliding plates are slidably provided on both sides of the mounting plate via slide rails. The top of one sliding plate is connected to the telescopic rod of the electric push rod, and the bottom of the sliding plate is connected to the mounting shell; the bottom of the other sliding plate is connected to the ink return plate assembly.

[0006] Furthermore, the substrate platform is provided with a cavity, and multiple vacuum adsorption holes are evenly opened on the top surface of the platform. The cavity of the substrate platform is connected to an external vacuum generator through a connecting air pipe to provide negative pressure to the platform.

[0007] Furthermore, both the vertical moving component and the horizontal moving component are moved via a lead screw drive mechanism.

[0008] Compared with the prior art, the beneficial effects of this utility model are: 1. The scraper assembly adopts a "drive motor + worm gear" transmission structure. The worm gear transmission has the characteristics of self-locking (which can prevent the scraper angle from changing on its own due to external force) and large reduction ratio, which can realize the small incremental adjustment of the scraper angle. Combined with the electric push rod to quantitatively adjust the scraper pressure, the ink transfer amount can be precisely controlled to meet the printing needs of different thicknesses.

[0009] 2. The vacuum adsorption structure of the substrate platform adsorbs the substrate through uniformly distributed vacuum adsorption holes. Compared with traditional mechanical clamps, it can apply a more uniform fixing force and avoid substrate wrinkling or local deformation. At the same time, negative pressure adsorption can adapt to substrates of different sizes and materials, effectively solving the problem of substrate displacement during printing. Attached Figure Description

[0010] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is an installation view of the scraper assembly and the ink return plate assembly in this utility model; Figure 3 This is a schematic diagram of the scraper assembly in this utility model; Figure 4 This is a schematic diagram of the printing substrate platform in this utility model.

[0011] In the diagram: 1-Workbench, 2-Vertical moving assembly, 3-Horizontal moving assembly, 4-Connecting plate, 5-Screen printing plate, 6-Mounting plate, 7-Electric push rod, 8-Scraper assembly, 9-Ink return plate assembly, 10-Substrate platform, 11-Sliding plate, 31-Sliding guide rail, 32-Moving plate, 81-Mounting housing, 82-Scraper, 83-Worm gear, 84-Worm, 85-Drive motor, 101-Vacuum adsorption hole. Detailed Implementation

[0012] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0013] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0014] Combination Figures 1 to 4 The ink printing device with adjustable printing thickness shown includes a worktable 1. A two-axis moving mechanism is provided on the top of the worktable 1. The two-axis moving mechanism includes a vertical moving component 2 that moves in the Z-axis direction and a horizontal moving component 3 that moves in the X-axis direction. Both the vertical moving component 2 and the horizontal moving component 3 are moved by a lead screw transmission mechanism, which is a commonly used two-axis moving method in the prior art. The two ends of the sliding guide rail 31 of the transverse moving component 3 are connected to the screen printing plate 5 via the connecting plate 4. One end of the moving plate 32 of the transverse moving component 3 is connected to the mounting plate 6. Two electric push rods 7 are installed on the top of the mounting plate 6. One end of the telescopic rod of the two electric push rods 7 is connected to the scraper assembly 8 and the ink return plate assembly 9 respectively. The worktable 1 below the screen printing plate 5 is provided with a substrate platform 10. The vertical moving component 2 drives the horizontal moving component 3 to move up and down as a whole through the lead screw transmission mechanism, adjusting the vertical distance between the screen printing plate 5 and the substrate on the substrate platform 10, ensuring that the ink can be accurately transferred from the screen printing plate mesh to the substrate surface, and avoiding missing prints due to excessive distance or damage to the substrate due to insufficient distance.

[0015] The printing platform 10 has a cavity inside, and multiple vacuum adsorption holes 101 are evenly distributed on the top surface of the platform. The cavity of the printing platform 10 is connected to an external vacuum generator through a connecting air pipe to provide negative pressure to the platform. During printing, the substrate to be printed, such as paper or plastic sheet, is placed on the top surface of the printing platform 10 on the worktable 1. The external vacuum generator is started, and the vacuum generator draws negative pressure into the cavity inside the printing platform 10 through the connecting air pipe. The negative pressure in the cavity acts on the substrate through the evenly distributed vacuum adsorption holes 101 on the top surface, tightly adsorbing the substrate onto the platform surface and preventing the substrate from shifting due to scraping by the squeegee or movement of the mechanism during the printing process.

[0016] like Figure 2 As shown, sliding plates 11 are slidably mounted on both sides of the mounting plate 6 via slide rails. The top of one sliding plate 11 is connected to the telescopic rod of the electric push rod 7, and the bottom of the sliding plate 11 is connected to the mounting housing 81. The bottom of the other sliding plate 11 is connected to the ink return plate assembly 9. In use, the telescopic rod of the electric push rod 7 drives the corresponding sliding plate 11 to move up and down along the slide rails on both sides of the mounting plate 6. The sliding plates 11 are connected to the squeegee assembly 8 and the ink return plate assembly 9 respectively, thereby adjusting the contact pressure between the squeegee 82, the ink return plate and the screen printing plate 5 (the greater the pressure, the less ink is transferred; the lower the pressure, the more ink is transferred), and cooperating with the squeegee angle to achieve dual control of printing thickness.

[0017] like Figure 3 As shown, the scraper assembly 8 includes a mounting shell 81 with an opening at the bottom. A scraper 82 is housed inside the mounting shell 81 and is rotatably mounted within it via a rotating shaft at the top. A worm gear 83 is fixedly positioned at the center of the rotating shaft of the scraper 82. A worm 84 is connected above the worm gear 83 via a transmission connection and is rotatably mounted within the mounting shell 81. A drive motor 85 connected to the worm 84 is mounted on the outer surface of the mounting shell 81. When the printing thickness needs to be adjusted, the drive motor 85 of the scraper assembly 8 is activated, causing the drive motor 85 to move the worm 84 within the mounting shell 81. The worm gear 84 rotates inside the housing 81. Because the worm 84 meshes with the worm wheel 83 on the rotating shaft of the scraper 82, the rotation of the worm 84 is converted into the low-speed rotation of the worm wheel 83, which in turn drives the scraper 82 to tilt around the rotating shaft (increasing the tilt angle can reduce the amount of ink scraped, and decreasing the angle can increase the amount of ink scraped), so as to achieve precise adjustment of the scraper angle. In addition, the worm gear and worm wheel combination used in this utility model also has a self-locking function. The self-locking function can prevent the scraper 82 from shifting its angle due to the contact pressure during scraping, mechanism vibration or its own gravity, so as to stably maintain the preset printing thickness parameters.

[0018] Once the parameters are adjusted, the screw drive mechanism of the lateral movement component 3 is activated, driving the moving plate 32 to move laterally at a constant speed along the sliding guide rail 31; the moving plate 32 drives the mounting plate 6 to move laterally synchronously, and the mounting plate 6 drives the scraper assembly 8 and the ink return plate assembly 9 to move along the surface of the screen printing plate 5 via the sliding plate 11. The squeegee 82 first contacts the screen printing plate 5. During the lateral movement, it scrapes the ink on the screen printing plate 5 along the mesh to the surface of the substrate below, forming a printing layer of a preset thickness. The ink return plate assembly 9 moves synchronously with the squeegee 82. After the squeegee finishes scraping, the ink return plate scrapes the remaining ink on the screen printing plate 5 back in the initial direction, so that the ink is redistributed evenly on the screen printing plate, preparing for the next printing.

[0019] After a single printing is completed, the horizontal moving component 3 drives the moving plate 32 to return to its initial position, and the vertical moving component 2 drives the horizontal moving component 3 to rise and detach from the substrate; the vacuum generator stops working, the negative pressure on the substrate platform 10 disappears, the operator removes the printed substrate, and the device enters the next printing cycle.

[0020] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0021] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An ink printing apparatus with adjustable printing thickness, comprising a worktable (1), wherein a two-axis moving mechanism is provided on the top of the worktable (1), the two-axis moving mechanism comprising a vertical moving component (2) and a horizontal moving component (3), characterized in that: The two ends of the sliding guide rail (31) of the lateral moving component (3) are connected to the screen printing plate (5) via the connecting plate (4). One end of the moving plate (32) of the lateral moving component (3) is connected to the mounting plate (6). Two electric push rods (7) are installed on the top of the mounting plate (6). One end of the telescopic rod of the two electric push rods (7) is connected to the scraper assembly (8) and the ink return plate assembly (9), respectively. The scraper assembly (8) includes a mounting shell (81) with an opening at the bottom. The scraper (82) is provided inside the mounting shell (81). The scraper (82) is rotatably mounted in the mounting housing (81) via a rotating shaft at the top. A worm gear (83) is fixedly installed at the center of the rotating shaft of the scraper (82). A worm (84) is provided above the worm gear (83) via a transmission connection. The worm (84) is rotatably mounted in the mounting housing (81). A drive motor (85) connected to the worm (84) is installed on the outer side of the mounting housing (81). A substrate platform (10) is provided on the worktable (1) below the screen printing plate (5).

2. The ink printing apparatus with adjustable printing thickness according to claim 1, characterized in that: Both sides of the mounting plate (6) are provided with sliding plates (11) via slide rails. The top of one of the sliding plates (11) is connected to the telescopic rod of the electric push rod (7), and the bottom of the sliding plate (11) is connected to the mounting shell (81). The bottom of the other sliding plate (11) is connected to the ink return plate assembly (9).

3. The ink printing apparatus with adjustable printing thickness according to claim 2, characterized in that: The substrate platform (10) is provided with a cavity, and a plurality of vacuum adsorption holes (101) are uniformly opened on the top surface of the platform. The cavity of the substrate platform (10) is connected to an external vacuum generator through a connecting air pipe to provide negative pressure to the platform.

4. The ink printing apparatus with adjustable printing thickness according to claim 1, characterized in that: Both the vertical moving component (2) and the horizontal moving component (3) are moved by a screw drive mechanism.

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