An adjustment device for a piezoelectric inkjet printhead

Abstract

The utility model discloses a piezoelectric ink -jet print head's adjusting device, including mounting seat, ink tank and adjusting unit, adjusting unit includes the piezoelectric driver of being located below ink tank, is equipped with the vibration plate between ink tank and piezoelectric driver, and the buffer mechanism is installed between adjusting unit and mounting seat, and the buffer mechanism includes the rubber seal sleeve between the vibration plate and piezoelectric driver, and the inner wall both ends of mounting seat are connected with the mounting rod, and the mounting sleeve is slidably connected on every group mounting rod, and the mounting sleeve is connected with piezoelectric driver, and the rubber sleeve of two groups is sleeved on every group mounting rod. The utility model discloses through the adjacent rubber sleeve, rubber seal sleeve on buffer mechanism can alleviate the vibration of piezoelectric driver and vibration plate on adjusting unit, and piezoelectric ink -jet print head can quickly appease after printing, avoids the influence next new ink drop's volume and flight trajectory, has improved the use effect of adjusting device, has improved the printing effect of piezoelectric ink -jet print head.

Description

Technical Field

[0001] This utility model belongs to the field of inkjet printhead technology, and particularly relates to an adjustment device for a piezoelectric inkjet printhead. Background Technology

[0002] A piezoelectric inkjet printhead is a device that uses the piezoelectric effect to precisely eject ink from tiny nozzles, thereby forming patterns or text on a medium (such as paper). The adjustment mechanism of a piezoelectric inkjet printhead is a sophisticated mechatronic system. Its core task is to accurately and promptly convert electrical signals (drive waveforms) into the mechanical motion of piezoelectric elements, thereby controlling the ejection of ink droplets.

[0003] Existing piezoelectric inkjet printhead adjustment devices use electronically driven waveforms to precisely control the mechanical deformation of the piezoelectric actuator, ultimately achieving precise control of tiny ink droplets. However, after each ejection, the piezoelectric actuator and vibrating plate of the adjustment device do not immediately stop, but continue to vibrate for a period of time, similar to the aftermath of a bell being struck. This vibration is difficult to reduce, resulting in the vibration not completely subsiding before the next ejection, which affects the size and trajectory of the new ink droplets. This problem is particularly prominent during high-speed printing, affecting the effectiveness of the adjustment device. Therefore, based on actual usage, we have improved the aforementioned existing technology. Utility Model Content

[0004] This invention overcomes the shortcomings of the prior art by providing an adjustment device for a piezoelectric inkjet printhead to solve the problems existing in the prior art.

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

[0006] An adjustment device for a piezoelectric inkjet printhead includes a mounting base, an ink cartridge, and an adjustment unit. The adjustment unit includes a piezoelectric actuator located below the ink cartridge, a vibrating plate between the ink cartridge and the piezoelectric actuator, and a buffer mechanism between the adjustment unit and the mounting base.

[0007] The buffer mechanism includes a rubber sealing sleeve between the vibrating plate and the piezoelectric actuator. The inner walls of the mounting base are connected to mounting rods at both ends. Each set of mounting rods is slidably connected to a mounting sleeve, and the mounting sleeve is connected to the piezoelectric actuator. Each set of mounting rods is fitted with two sets of rubber sleeves.

[0008] In a preferred embodiment of the present invention, the buffer mechanism further includes a base plate fixed to the mounting base, and a mounting rod located between the base plate and the inner wall of the mounting base.

[0009] In a preferred embodiment of this utility model, a limiting plate is fixed to the outer wall of the end of the mounting rod away from the base plate, and two sets of rubber sleeves are located at both ends of the mounting sleeve.

[0010] In a preferred embodiment of this invention, the mounting sleeve is movably connected to the piezoelectric actuator by a snap-fit ​​connection.

[0011] In a preferred embodiment of this utility model, bolts are threadedly connected to both the base plate and the mounting base, and the bolts are threadedly connected to the mounting rod.

[0012] In a preferred embodiment of this utility model, the inner cavity of the ink cartridge is provided with a filter membrane, and a communication module is installed on the ink cartridge.

[0013] In a preferred embodiment of this utility model, two sets of interconnected ink inlet tubes are installed on the ink cartridge, and a nozzle plate is installed on the end of the piezoelectric actuator away from the ink cartridge.

[0014] This utility model solves the defects existing in the background technology, and has the following beneficial effects:

[0015] This invention utilizes adjacent rubber sleeves on the buffer mechanism to absorb the vibration of the mounting sleeve. Combined with a rubber sealing sleeve, it can alleviate the vibration of the piezoelectric actuator and vibrating plate on the adjustment unit. The piezoelectric inkjet printhead can quickly calm down after printing, avoiding affecting the volume and flight trajectory of the next new ink droplet, thus improving the effectiveness of the adjustment device and the printing effect of the piezoelectric inkjet printhead. The mounting sleeve of the buffer mechanism is snapped into the piezoelectric actuator, and the mounting rod is connected by two sets of bolts, which facilitates the disassembly and assembly of the buffer mechanism and makes maintenance convenient. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0017] Figure 1 This is a schematic diagram of the overall structure of a preferred embodiment of the present utility model;

[0018] Figure 2 This is a bottom view of the preferred embodiment of the present invention.

[0019] Figure 3 This is a preferred embodiment of the present utility model. Figure 2 Enlarged structural diagram at point A in the middle;

[0020] Figure 4 This is a cross-sectional schematic diagram of the connection structure between the ink cartridge and the piezoelectric driver according to a preferred embodiment of the present invention.

[0021] In the diagram: 10. Mounting base; 11. Ink cartridge; 12. Ink inlet tube; 13. Communication module; 14. Filter membrane; 20. Adjustment unit; 201. Piezoelectric actuator; 202. Nozzle plate; 203. Vibration plate; 30. Buffer mechanism; 301. Rubber sealing sleeve; 302. Mounting rod; 303. Mounting sleeve; 305. Base plate; 306. Bolt; 307. Limiting plate; 308. Rubber sleeve. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand and implement the present invention. However, the embodiments are not intended to limit the present invention.

[0023] Example:

[0024] Please refer to Figure 1-4 This is an embodiment of the present utility model. This embodiment provides an adjustment device for a piezoelectric inkjet printhead, including a mounting base 10, an ink cartridge 11 and an adjustment unit 20. The adjustment unit 20 includes a piezoelectric actuator 201 disposed below the ink cartridge 11. A vibrating plate 203 is provided between the ink cartridge 11 and the piezoelectric actuator 201. A buffer mechanism 30 is installed between the adjustment unit 20 and the mounting base 10.

[0025] It should be noted that the piezoelectric inkjet printhead is an existing device, and the specific model and working principle will not be described here. The adjustment device is the adjustment unit 20, which uses electronic drive waveform to precisely control the mechanical deformation of the piezoelectric driver 201, and finally achieves precise control of tiny ink droplets.

[0026] The buffer mechanism 30 includes a rubber sealing sleeve 301 disposed between the vibrating plate 203 and the piezoelectric actuator 201. Mounting rods 302 are connected to both ends of the inner wall of the mounting base 10. A mounting sleeve 303 is slidably connected to each mounting rod 302, and the mounting sleeve 303 is connected to the piezoelectric actuator 201. Two sets of rubber sleeves 308 are fitted onto each mounting rod 302. The rubber sealing sleeve 301 is through-hole in the middle to ensure communication between the ink in the ink cartridge 11 and the piezoelectric actuator 201. The rubber sleeve 308 and the rubber... The rubber sealing sleeve 301 is a damping material. When the piezoelectric inkjet printhead completes a print, the adjacent rubber sleeve 308 uses the characteristics of the damping material to absorb the vibration of the mounting sleeve 303. Together with the rubber sealing sleeve 301, it can alleviate the vibration of the piezoelectric driver 201 and the vibrating plate 203 on the adjustment unit 20. The piezoelectric inkjet printhead can quickly calm down after printing, avoiding affecting the volume and flight trajectory of the next new ink droplet, improving the use effect of the adjustment device and improving the printing effect of the piezoelectric inkjet printhead.

[0027] The buffer mechanism 30 also includes a base plate 305 fixed to the mounting base 10, and a mounting rod 302 located between the base plate 305 and the inner wall of the mounting base 10.

[0028] Furthermore, a limiting plate 307 is fixed to the outer wall of the end of the mounting rod 302 away from the base plate 305, and two sets of rubber sleeves 308 are located at both ends of the mounting sleeve 303; the limiting plate 307 and the base plate 305 limit the installation position of the adjacent rubber sleeves 308, thereby mitigating the vibration of the piezoelectric actuator 201 and the vibrating plate 203 in the vertical direction.

[0029] The mounting sleeve 303 is movably connected to the piezoelectric actuator 201 by a snap-fit ​​connection; a snap-fit ​​component is fixedly connected to one end of the mounting sleeve 303 facing the piezoelectric actuator 201, and a snap-fit ​​groove is provided on the piezoelectric actuator 201. The connection between the snap-fit ​​component and the snap-fit ​​groove plays a role in fixing the mounting sleeve 303 and the piezoelectric actuator 201.

[0030] The base plate 305 and the mounting base 10 are both threaded with bolts 306, which are threaded to the mounting rod 302. The mounting rod 302, which is installed by bolts 306, is easy to disassemble and assemble, and facilitates the later maintenance of the buffer mechanism 30.

[0031] The ink cartridge 11 has a filter membrane 14 inside and a communication module 13 installed on it.

[0032] The ink cartridge 11 is equipped with two sets of interconnected ink inlet pipes 12, and the piezoelectric actuator 201 is equipped with a nozzle plate 202 at the end away from the ink cartridge 11.

[0033] In use, first, place the mounting rod 302 of the buffer mechanism 30 between the mounting base 10 and the base plate 305, align the threaded holes between them, then rotate the bolt 306 to fix it between the mounting base 10 and the base plate 305, and then snap the mounting sleeve 303 onto the piezoelectric actuator 201, which facilitates the assembly of the buffer mechanism 30. When the piezoelectric actuator 201 on the adjustment unit 20 is working, the ink in the ink cartridge 11 is ejected through the nozzle plate 202, realizing precise control of tiny ink droplets and completing the printing work. During this process, the piezoelectric actuator 201 and the vibrating plate 203 will vibrate.

[0034] The adjacent rubber sleeves 308 on the buffer mechanism 30 can absorb the vibration of the mounting sleeve 303. Together with the rubber sealing sleeve 301, they can alleviate the vibration of the piezoelectric driver 201 and the vibration plate 203 on the adjustment unit 20. The piezoelectric inkjet printhead can quickly calm down after printing, avoiding affecting the volume and flight trajectory of the next new ink droplet, thus improving the effectiveness of the adjustment device.

[0035] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. An adjustment device for a piezoelectric inkjet printhead, comprising a mounting base (10), an ink cartridge (11), and an adjustment unit (20), characterized in that, The adjustment unit (20) includes a piezoelectric actuator (201) located below the ink cartridge (11), a vibrating plate (203) is provided between the ink cartridge (11) and the piezoelectric actuator (201), and a buffer mechanism (30) is installed between the adjustment unit (20) and the mounting base (10). The buffer mechanism (30) includes a rubber sealing sleeve (301) disposed between the vibrating plate (203) and the piezoelectric actuator (201). The inner walls of the mounting base (10) are connected to mounting rods (302) at both ends. Each set of mounting rods (302) is slidably connected to a mounting sleeve (303), and the mounting sleeve (303) is connected to the piezoelectric actuator (201). Each set of mounting rods (302) is fitted with two sets of rubber sleeves (308).

2. The adjustment device for the piezoelectric inkjet printhead according to claim 1, characterized in that, The buffer mechanism (30) also includes a base plate (305) fixed to the mounting base (10), and the mounting rod (302) is located between the base plate (305) and the inner wall of the mounting base (10).

3. The adjustment device for the piezoelectric inkjet printhead according to claim 2, characterized in that, The mounting rod (302) is fixed to the outer wall of the end away from the base plate (305) by a limiting plate (307), and two sets of rubber sleeves (308) are located at both ends of the mounting sleeve (303).

4. The adjustment device for the piezoelectric inkjet printhead according to claim 1, characterized in that, The mounting sleeve (303) is movably connected to the piezoelectric actuator (201) by a snap-fit ​​connection.

5. The adjustment device for the piezoelectric inkjet printhead according to claim 2, characterized in that, Bolts (306) are threaded onto the base plate (305) and the mounting base (10), and the bolts (306) are threaded onto the mounting rod (302).

6. The adjustment device for the piezoelectric inkjet printhead according to claim 1, characterized in that, The inner cavity of the ink cartridge (11) is provided with a filter membrane (14), and a communication module (13) is installed on the ink cartridge (11).

7. The adjustment device for the piezoelectric inkjet printhead according to claim 1, characterized in that, The ink cartridge (11) is equipped with two sets of interconnected ink inlet pipes (12), and the end of the piezoelectric actuator (201) away from the ink cartridge (11) is equipped with a nozzle plate (202).

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