An ultrasonic inkjet printing head frequency adjustment device

Abstract

The utility model relates to inkjet printing technical field, concretely is a kind of ultrasonic inkjet printing nozzle frequency adjusting device, including machine body, cover, screw rod, motor, threaded block, fixed plate, ink cartridge and adjusting device, cover and machine body articulate, screw rod and the inner wall rotation connection of machine body, motor is installed inside machine body, screw rod and the output end fixed connection of motor, threaded block and screw rod are threadedly connected, fixed plate is set below threaded block, ink cartridge and the lower surface fixed connection of fixed plate, adjusting device is set in the lower surface of ink cartridge, adjusting device includes nozzle.The utility model, by setting adjusting device, the flow rate of nozzle can be adjusted after the frequency of adjusting ultrasonic generating device, prevent drop stability and consistency decline, lead to both adaptation imbalance, drop offset, abnormality, stability decline or even block, finally influence printing precision and efficiency, effectively improve the reliability of equipment for this.

Description

Technical Field

[0001] This utility model relates to the field of inkjet printing technology, and in particular to an ultrasonic inkjet printer printhead frequency adjustment device. Background Technology

[0002] Ultrasonic inkjet printing is a non-contact printing technology. Its core principle is to use the energy generated by ultrasonic vibrations to form printing materials (such as ink, bio-ink, metal paste, etc.) into tiny droplets, and precisely control the jetting direction and landing point of the droplets to ultimately form patterns or structures on the substrate. Compared with traditional thermal inkjet printing (which relies on heating to generate bubbles that propel droplets) or piezoelectric inkjet printing (which uses the deformation of piezoelectric materials to drive droplets), ultrasonic inkjet printing has advantages such as no thermal damage, wide material compatibility, and controllable droplet size, and is currently widely used in fields such as electronics manufacturing, biomedicine, and materials science.

[0003] Existing ultrasonic inkjet printers can adjust the frequency to change the size of the ink and the jet frequency. However, if only the frequency is adjusted while the nozzle size remains unchanged, it will lead to an imbalance between the two, resulting in ink droplet deviation, abnormal shape, decreased stability, or even clogging. Ultimately, this will affect printing accuracy and efficiency, and improvements are needed. Utility Model Content

[0004] The purpose of this invention is to solve the problem of mismatch between ink droplets and nozzles in the prior art, and to propose an ultrasonic inkjet printer printhead frequency adjustment device.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: an ultrasonic inkjet printer printhead frequency adjustment device, comprising a body, a cover, a lead screw, a motor, a threaded block, a fixing plate, an ink cartridge, and an adjustment device. The cover is hinged to the body, the lead screw is rotatably connected to the inner wall of the body, the motor is installed inside the body, the lead screw is fixedly connected to the output end of the motor, the threaded block is threadedly connected to the lead screw, the fixing plate is disposed below the threaded block, the ink cartridge is fixedly connected to the lower surface of the fixing plate, the adjustment device is disposed on the lower surface of the ink cartridge, the adjustment device includes a printhead, the printhead is fixedly connected to the inner wall of the ink cartridge, a rotating cover is rotatably connected to the surface of the printhead, and a baffle plate is fixedly connected to the inner walls of both the printhead and the rotating cover. The baffle plate has a first leakage hole and a second leakage hole.

[0006] Furthermore, the nozzles are in multiple sets, arranged linearly and uniformly. A toothed ring is fixedly connected to the surface of the rotating cover, and a toothed rack is engaged on the surface of the toothed ring. A support column is fixedly connected to the lower surface of the rotating cover.

[0007] Furthermore, the rack is provided with a sliding groove, and the support column is slidably connected to the inner wall of the sliding groove. There are two sets of support columns.

[0008] Furthermore, a connecting plate is fixedly connected to the side of the rack, and a push rod is fixedly connected to the side of the ink cartridge near the connecting plate. The output end of the push rod is fixedly connected to the connecting plate.

[0009] Furthermore, a second connecting plate is fixedly connected to the upper surface of the fixing plate. There are two sets of the second connecting plates, which are arranged on both sides of the threaded block. Limiting grooves are formed on the threaded block and the second connecting plate.

[0010] Furthermore, a limiting plate is slidably connected to the inner wall of the limiting groove, and limiting holes are opened at both ends of the limiting plate. A sleeve is fixedly connected to the upper surface of the fixing plate.

[0011] Furthermore, a limiting rod is slidably connected to the inner wall of the sleeve, the limiting rod is slidably connected to the inner wall of the limiting hole, a spring is fixedly connected to the upper surface of the fixing plate, the spring is disposed inside the sleeve, and the other end of the spring is fixedly connected to the limiting rod.

[0012] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0013] In this invention, an adjustment device is provided to facilitate synchronous adjustment of the nozzle flow rate in conjunction with the ultrasonic device. When adjusting the nozzle flow rate, firstly, the push rod is activated, pushing the connecting plate two to slide. The connecting plate two slides along with the rack. As the rack slides on the support column surface, it rotates the toothed ring. The toothed ring, along with the rotating cover, rotates on the nozzle surface. The rotating cover and a baffle plate rotate simultaneously. When the first leak hole of the two baffle plates aligns, the water flow channel narrows, slowing the flow rate. When the second leak hole of the two baffle plates aligns, the water flow channel widens, increasing the flow rate. When both hole one and hole two are not aligned, the printhead will not spray ink. When disassembling the ink cartridge for maintenance, press the limit rods on both sides. The limit rods will slide into the sleeve, and the spring will retract at the same time. Then pull out the limit plate, and the connecting plate two will separate from the threaded block to remove the ink cartridge. By setting an adjustment device, the flow rate of the printhead can be adjusted after adjusting the frequency of the ultrasonic generator. This prevents the stability and consistency of ink droplets from decreasing, which can lead to mismatch between the two, droplet deviation, abnormal shape, decreased stability, or even blockage. Ultimately, this will affect printing accuracy and efficiency, thus effectively improving the reliability of the equipment. Attached Figure Description

[0014] Figure 1 This utility model provides a three-dimensional structural schematic diagram of an ultrasonic inkjet printer printhead frequency adjustment device;

[0015] Figure 2 This invention provides a schematic diagram of the internal structure of the ultrasonic inkjet printer printhead frequency adjustment device.

[0016] Figure 3 This utility model provides an overall structural diagram of the adjustment device in an ultrasonic inkjet printer printhead frequency adjustment device;

[0017] Figure 4 This utility model proposes an ultrasonic inkjet printer printhead frequency adjustment device. Figure 3 A magnified structural diagram at point A;

[0018] Figure 5 This invention provides a partial structural diagram of the adjustment device in an ultrasonic inkjet printer printhead frequency adjustment device.

[0019] Legend:

[0020] 1. Main body; 2. Cover; 3. Lead screw; 4. Motor; 5. Threaded block; 6. Fixing plate; 7. Ink cartridge; 8. Adjustment device; 81. Printhead; 82. Rotating cover; 83. Gear ring; 84. Baffle plate; 85. Leakage hole one; 86. Leakage hole two; 87. Rack; 88. Slide groove; 89. Support column; 810. Connecting plate one; 811. Push rod; 812. Connecting plate two; 813. Limiting groove; 814. Limiting plate; 815. Limiting hole; 816. Sleeve; 817. Limiting rod; 818. Spring. Detailed Implementation

[0021] Please see Figures 1-5 This utility model provides a technical solution: an ultrasonic inkjet printer printhead frequency adjustment device, including a body 1, a cover 2, a lead screw 3, a motor 4, a threaded block 5, a fixing plate 6, an ink cartridge 7, and an adjustment device 8. The cover 2 is hinged to the body 1, the lead screw 3 is rotatably connected to the inner wall of the body 1, the motor 4 is installed inside the body 1, the lead screw 3 is fixedly connected to the output end of the motor 4, the threaded block 5 is threadedly connected to the lead screw 3, the fixing plate 6 is located below the threaded block 5, the ink cartridge 7 is fixedly connected to the lower surface of the fixing plate 6, and the adjustment device 8 is located on the lower surface of the ink cartridge 7.

[0022] The specific settings and functions of its adjustment device 8 will be explained in detail below.

[0023] In this embodiment: the adjusting device 8 includes a printhead 81, which is fixedly connected to the inner wall of the ink cartridge 7. A rotating cover 82 is rotatably connected to the surface of the printhead 81. A baffle plate 84 is fixedly connected to the inner walls of both the printhead 81 and the rotating cover 82. A first leak hole 85 and a second leak hole 86 are provided on the baffle plate 84.

[0024] The effect achieved by the above components is as follows: when the first drain hole 85 and the second drain hole 86 are aligned, the water flow channel becomes smaller and the flow rate slows down. When the second drain hole 86 is aligned, the water flow channel becomes larger and the flow rate speeds up. When neither the first drain hole 85 nor the second drain hole 86 is aligned, the printhead 81 stops spraying ink.

[0025] Specifically, there are multiple sets of nozzles 81, which are arranged linearly and evenly. A toothed ring 83 is fixedly connected to the surface of the rotating cover 82, and a toothed rack 87 is engaged on the surface of the toothed ring 83. A support column 89 is fixedly connected to the lower surface of the rotating cover 82.

[0026] The effect achieved by the above components is that by setting the toothed ring 83 and the rack 87 together, the baffles 84 of multiple nozzles 81 can be adjusted simultaneously.

[0027] Specifically, the rack 87 has a groove 88, and the support column 89 is slidably connected to the inner wall of the groove 88. There are two sets of support columns 89.

[0028] The effect achieved by the above components is: to provide support column 89 to support rack 87 and prevent rack 87 from falling off rack ring 83.

[0029] Specifically, a connecting plate 810 is fixedly connected to the side of the rack 87, and a push rod 811 is fixedly connected to the side of the ink cartridge 7 near the connecting plate 810. The output end of the push rod 811 is fixedly connected to the connecting plate 810.

[0030] The effect achieved by the above components is: the connecting plate 810 is provided to facilitate the push rod 811 to push the rack 87.

[0031] Specifically, a second connecting plate 812 is fixedly connected to the upper surface of the fixing plate 6. There are two sets of the second connecting plate 812, which are arranged on both sides of the threaded block 5. Limiting grooves 813 are opened on the threaded block 5 and the second connecting plate 812.

[0032] Specifically, the inner wall of the limiting groove 813 is slidably connected to the limiting plate 814, the two ends of the limiting plate 814 are provided with limiting holes 815, and the upper surface of the fixing plate 6 is fixedly connected to the sleeve 816.

[0033] The effect achieved by the above components is: setting a limiting plate 814 to connect the fixing plate 6 and the threaded block 5 together.

[0034] Specifically, a limiting rod 817 is slidably connected to the inner wall of the sleeve 816, and the limiting rod 817 is slidably connected to the inner wall of the limiting hole 815. A spring 818 is fixedly connected to the upper surface of the fixing plate 6. The spring 818 is located inside the sleeve 816, and the other end of the spring 818 is fixedly connected to the limiting rod 817.

[0035] The effects achieved by the above components are as follows: a limiting rod 817 is provided to prevent the limiting plate 814 from sliding, and a spring 818 is provided to support the limiting rod 817.

[0036] Working principle: By setting the adjustment device 8, the flow rate of the nozzle 81 can be adjusted synchronously with the ultrasonic device. When adjusting the flow rate of the nozzle 81, the push rod 811 is first activated. The push rod 811 pushes the connecting plate 812 to slide. The connecting plate 812 slides with the rack 87. When the rack 87 slides on the surface of the support column 89, it rotates the toothed ring 83. The toothed ring 83 rotates the rotating cover 82 on the surface of the nozzle 81. The rotating cover 82 and a baffle plate 84 rotate simultaneously. When the first leak hole 85 is aligned, the water flow channel becomes smaller and the flow rate slows down. When the second leak hole 86 of the two baffles 84 is aligned, the water flow channel becomes larger and the flow rate speeds up. When the first leak hole 85 and the second leak hole 86 of the two baffles 84 are not aligned, the print head 81 stops spraying ink. When disassembling the ink cartridge 7 for maintenance, press the limit rods 817 on both sides. The limit rods 817 slide into the sleeve 816. At the same time, the spring 818 contracts. Then pull out the limit plate 814. The connecting plate 812 separates from the threaded block 5 and the ink cartridge 7 is removed.

[0037] By setting the adjustment device 8, the flow rate of the printhead 81 can be adjusted after adjusting the frequency of the ultrasonic generator, preventing the droplet stability and consistency from decreasing, which could lead to an imbalance between the two, droplet deviation, abnormal shape, decreased stability, or even blockage, ultimately affecting printing accuracy and efficiency. This effectively improves the reliability of the equipment.

Claims

1. An ultrasonic inkjet printer printhead frequency adjustment device, comprising a body (1), a cover (2), a lead screw (3), a motor (4), a threaded block (5), a fixing plate (6), an ink cartridge (7), and an adjustment device (8), characterized in that: The cover (2) is hinged to the body (1), the lead screw (3) is rotatably connected to the inner wall of the body (1), the motor (4) is installed inside the body (1), the lead screw (3) is fixedly connected to the output end of the motor (4), the threaded block (5) is threadedly connected to the lead screw (3), the fixing plate (6) is located below the threaded block (5), the ink cartridge (7) is fixedly connected to the lower surface of the fixing plate (6), and the adjusting device (8) is located on the lower surface of the ink cartridge (7). The adjustment device (8) includes a printhead (81), which is fixedly connected to the inner wall of the ink cartridge (7). A rotating cover (82) is rotatably connected to the surface of the printhead (81). A baffle plate (84) is fixedly connected to the inner walls of both the printhead (81) and the rotating cover (82). A first leak hole (85) and a second leak hole (86) are provided on the baffle plate (84).

2. The ultrasonic inkjet printer printhead frequency adjustment device according to claim 1, characterized in that: There are multiple sets of nozzles (81), which are arranged linearly and uniformly. A toothed ring (83) is fixedly connected to the surface of the rotating cover (82), and a toothed rack (87) meshes with the surface of the toothed ring (83). A support column (89) is fixedly connected to the lower surface of the rotating cover (82).

3. The ultrasonic inkjet printer printhead frequency adjustment device according to claim 2, characterized in that: The rack (87) is provided with a sliding groove (88), and the support column (89) is slidably connected to the inner wall of the sliding groove (88). There are two sets of support columns (89).

4. The ultrasonic inkjet printer printhead frequency adjustment device according to claim 3, characterized in that: A connecting plate (810) is fixedly connected to the side of the rack (87), and a push rod (811) is fixedly connected to the side of the ink cartridge (7) near the connecting plate (810). The output end of the push rod (811) is fixedly connected to the connecting plate (810).

5. The ultrasonic inkjet printer printhead frequency adjustment device according to claim 1, characterized in that: The upper surface of the fixed plate (6) is fixedly connected to the second connecting plate (812). There are two sets of the second connecting plate (812). The two sets of the second connecting plate (812) are arranged on both sides of the threaded block (5). Limiting grooves (813) are opened on the threaded block (5) and the second connecting plate (812).

6. The ultrasonic inkjet printer printhead frequency adjustment device according to claim 5, characterized in that: The inner wall of the limiting groove (813) is slidably connected to a limiting plate (814), and the two ends of the limiting plate (814) are provided with limiting holes (815). A sleeve (816) is fixedly connected to the upper surface of the fixing plate (6).

7. The ultrasonic inkjet printer printhead frequency adjustment device according to claim 6, characterized in that: A limiting rod (817) is slidably connected to the inner wall of the sleeve (816), and the limiting rod (817) is slidably connected to the inner wall of the limiting hole (815). A spring (818) is fixedly connected to the upper surface of the fixing plate (6), and the spring (818) is disposed inside the sleeve (816). The other end of the spring (818) is fixedly connected to the limiting rod (817).

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