Arc-shaped piezoelectric ceramic silver printing device

Abstract

This utility model relates to an arc-shaped piezoelectric ceramic silver printing device, belonging to the field of piezoelectric ceramic electrode printing technology. The technical solution is as follows: the suction nozzle (2) is a plug-in suction nozzle, the outer circle of the piezoelectric ceramic (19) is positioned by being tightly attached to the top of the positioning fixture (20), the piezoelectric ceramic and the suction nozzle are positioned at the same rotation center, and the piezoelectric ceramic is fixed on the suction nozzle by negative pressure adsorption; the hollow shaft stepper motor (5) drives the suction nozzle quick change part (3), the suction nozzle (2) and the piezoelectric ceramic to rotate together, and the silver paste is applied to the rotating piezoelectric ceramic by the silver-coating pen above. The beneficial effects of this utility model are: after positioning the arc-shaped piezoelectric ceramic and fixing it on the rotating equipment for silver printing, it is possible to produce piezoelectric ceramics of different specifications and achieve rapid production change, which is more efficient, compatible with small batch sampling, and the silver paste thickness is more uniform and there is no missing printing. It not only meets the requirements of work efficiency, but also allows for rapid product change and ensures the quality of printed electrodes.

Description

Technical Field

[0001] This utility model relates to an arc-shaped piezoelectric ceramic silver printing device, belonging to the field of piezoelectric ceramic electrode printing technology. Background Technology

[0002] In recent years, with the development of technology, the applications of piezoelectric ceramics have become increasingly diversified. The demand for curved piezoelectric ceramics is growing in fields such as medical, industrial, consumer electronics, and aerospace. During the production and processing of piezoelectric ceramic sheets, electrodes must be created by printing silver paste. While printing methods for planar piezoelectric ceramics are relatively mature, the printing methods for curved piezoelectric ceramics are still underdeveloped. The core of printing silver paste for curved piezoelectric ceramics is adapting to the curved surface shape to ensure uniform adhesion and no dripping. Some existing technologies use screen printing for printing silver paste on curved piezoelectric ceramics, such as Chinese patent CN201820731790.4 entitled "A Multilayer...". The paper titled "A Piezoelectric Ceramic Silver Printing Machine" and CN201921931557.1, among others, uses screen printing, requiring a customized flexible screen plate matched to the curvature of the arc. The problems include: screen printing is commonly used in planar printing processes; in arc-shaped surface printing, issues arise such as poor adhesion between the screen and the curved surface, uneven squeegee pressure, silver paste accumulation on one side of the arc, missing areas at the apex, and poor electrode consistency. It's difficult to achieve a tight fit between the screen and the ceramic surface during printing, and it's also difficult to evenly transfer the silver paste using a squeegee. Furthermore, the screen has a short lifespan and high cost, making it unsuitable for printing silver on thin-walled, curved piezoelectric ceramics. Another approach is purely manual coating. Since the piezoelectric ceramic cannot be positioned and fixed on rotating equipment, it must remain stationary, and silver paste is manually applied to the ceramic with a brush. The problems include: difficulty in controlling the accuracy and uniformity of the electrode pattern and thickness, unsuitability for mass production, low efficiency, large human error, and high cost. In actual production, the sizes of arc-shaped piezoelectric ceramics vary, and the production quantity differs greatly between prototyping and batch product orders. It is necessary to meet the requirements of efficiency, quick product changeover, and ensure the quality of printed electrodes. Utility Model Content

[0003] The purpose of this invention is to provide a circular arc-shaped piezoelectric ceramic silver printing device. After positioning the circular arc-shaped piezoelectric ceramic, it is fixed on a rotating device for silver printing. This device can produce piezoelectric ceramics of different specifications, achieve rapid production changeover, and is more efficient. It is compatible with small-batch sampling, more flexible in operation, and simple to operate. The silver paste thickness is more uniform, with no missing printing. It is highly efficient, stable, and easy to operate, solving the above-mentioned technical problems existing in the prior art.

[0004] The technical solution of this utility model is: An arc-shaped piezoelectric ceramic silver printing device includes a main frame, an adsorption rotation module, and a positioning fixture. The adsorption rotation module is housed within the main frame and includes a nozzle, a quick-change nozzle assembly, a top connector, a hollow shaft stepper motor, a tail connector, and a negative pressure air pipe connector. The hollow shaft stepper motor is located within the main frame, and its front end is threadedly connected to the quick-change nozzle assembly via the top connector. The nozzle is a pluggable nozzle, inserted into the inner hole of the quick-change nozzle assembly. The rear end of the hollow shaft of the stepper motor is connected to the negative pressure air pipe connector via the tail connector. The nozzle, the inner hole of the quick-change nozzle assembly, the hollow shaft, and the negative pressure air pipe connector form a negative pressure gas channel. The outer diameter of the quick-change nozzle assembly is larger than the outer diameter of the nozzle itself. Positioning planes are provided on both sides of the top of the quick-change nozzle assembly, and a platform larger than its outer diameter is provided at the bottom. The positioning fixture is a semi-cylindrical shape coaxial with the rotation center of the nozzle. The positioning fixture, placed on a platform at the bottom of the quick-change nozzle, has an inner diameter at its top and bottom that is larger than its middle inner diameter, forming a stepped shape with a higher middle and lower ends. Positioning planes are provided on both sides of the bottom of the positioning fixture, and these two positioning planes match the positioning planes on both sides of the top of the quick-change nozzle, positioning the fixture on the platform at the bottom of the quick-change nozzle. The middle inner diameter of the positioning fixture is larger than the top outer diameter of the quick-change nozzle, and the top inner diameter of the positioning fixture matches the outer diameter of the piezoelectric ceramic to be silvered. The piezoelectric ceramic is arc-shaped, and its outer circumference is positioned by being tightly attached to the top of the positioning fixture. The piezoelectric ceramic and the nozzle are positioned at the same rotation center, and the piezoelectric ceramic is fixed to the nozzle by negative pressure adsorption. After the piezoelectric ceramic is positioned, the positioning fixture is removed. A hollow shaft stepper motor drives the quick-change nozzle, the nozzle, and the piezoelectric ceramic to rotate together, and a silver-coating pen above applies silver paste to the rotating piezoelectric ceramic. Different specifications of piezoelectric ceramics are matched with different specifications of suction nozzles. The suction nozzles can be quickly inserted and removed from the quick-change nozzle assembly, making replacement convenient. Different specifications of positioning fixtures are matched with different specifications of piezoelectric ceramics for positioning. The bottom inner diameter of the positioning fixtures is the same, matching the same quick-change nozzle assembly. The top inner diameter of the positioning fixtures is different, matching piezoelectric ceramics with different outer diameters. Producing piezoelectric ceramics of different specifications only requires changing the corresponding specifications of suction nozzles and positioning fixtures, which is very convenient.

[0005] The quick-change nozzle is positioned above the main frame, and a slurry collection hood is provided around the nozzle on the main frame.

[0006] The silver-coating pen can be operated manually or controlled by a robotic arm.

[0007] The main frame contains a control module, which includes a DC power supply, a motor controller, a jog switch, and a motor stop button. The DC power supply is connected to the hollow shaft stepper motor through the motor controller, jog switch, and motor stop button, and provides power to the hollow shaft stepper motor. The motor controller is a known and commonly used motor control circuit. The jog switch and motor stop button are connected in series in the motor control circuit to control the start and stop of the hollow shaft stepper motor.

[0008] The main frame is composed of a support, an upper cover plate, a lower cover plate, a front cover plate, a left cover plate, a right cover plate, and a rear cover plate. The quick-change nozzle is higher than the upper cover plate, and a slurry collection cover is provided on the upper cover plate around the nozzle.

[0009] The jog switch and motor stop button are located on the upper cover plate.

[0010] The hollow shaft stepper motor, pluggable suction nozzle, silver coating pen, and robotic arm involved in this utility model are all commercially available and known products.

[0011] The beneficial effects of this utility model are: after positioning the arc-shaped piezoelectric ceramic, it is fixed on the rotating equipment for silver printing, which can realize the production of piezoelectric ceramics of different specifications and achieve rapid production changeover, resulting in higher efficiency. It is compatible with small-batch prototyping, more flexible and simple operation, better uniformity of silver paste thickness, and no missing printing. It not only meets the requirements of work efficiency, but also allows for rapid product changeover and ensures the quality of printed electrodes. It is highly efficient, stable, and easy to operate. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the appearance of an embodiment of the present utility model; Figure 2 This is a schematic diagram of the overall structure of an embodiment of the present utility model; Figure 3 This is a schematic diagram of the adsorption rotation module in an embodiment of the present invention; Figure 4 This is a schematic diagram of the positioning fixture according to an embodiment of the present utility model; Figure 5 This is a partially enlarged schematic diagram of an embodiment of the present utility model; Figure 6 A schematic diagram of the robotic arm used in an embodiment of this utility model; In the diagram: 1. Slurry collection hood; 2. Suction nozzle; 3. Suction nozzle quick-change part; 4. Top connector; 5. Hollow shaft stepper motor; 6. Tail connector; 7. Negative pressure air pipe connector; 8. DC power supply; 9. Motor controller; 10. Jog switch; 11. Motor stop button; 12. Bracket; 13. Upper cover plate; 14. Lower cover plate; 15. Front cover plate; 16. Left cover plate; 17. Right cover plate; 18. Rear cover plate; 19. Piezoelectric ceramic; 20. Positioning fixture; 21. Hollow shaft; 22. Positioning plane one; 23. Platform; 24. Positioning plane two; 25. Robotic arm. Detailed Implementation

[0013] The present invention will be further described below with reference to the accompanying drawings and examples.

[0014] An arc-shaped piezoelectric ceramic silver printing device includes a main frame, an adsorption and rotation module, and a positioning fixture 20. The adsorption and rotation module is housed within the main frame. The adsorption and rotation module includes a suction nozzle 2, a quick-change nozzle 3, a top connector 4, a hollow shaft stepper motor 5, a tail connector 6, and a negative pressure air pipe connector 7. The hollow shaft stepper motor 5 is located within the main frame. The front end of the hollow shaft 21 of the hollow shaft stepper motor 5 is threadedly connected to the quick-change nozzle 3 via the top connector 4. The suction nozzle 2 is a pluggable nozzle, which is inserted into the quick-change nozzle. The hollow shaft 21 of the hollow shaft stepper motor 5 is connected to the negative pressure air pipe connector 7 via the tail connector 6. The inner hole of the nozzle 2, the nozzle quick-change part 3, the hollow shaft 21, and the negative pressure air pipe connector 7 form a negative pressure gas channel. The outer diameter of the nozzle quick-change part 3 is larger than the outer diameter of the nozzle 2. The top two sides of the nozzle quick-change part 3 are provided with positioning planes 22, and the bottom of the nozzle quick-change part 3 is provided with a platform 23 larger than the outer diameter of the nozzle quick-change part 3. The positioning fixture 20 is a semi-cylindrical shape coaxial with the rotation center of the nozzle 2 and is placed in the nozzle quick-change part. On the platform 23 at the bottom of component 3, the inner diameter of the top and bottom of the positioning fixture 20 is larger than the inner diameter of the middle, and the interior is generally stepped, with the middle higher and the two ends lower. Positioning planes 24 are provided on both sides of the bottom of the positioning fixture 20. These positioning planes 24 on both sides of the bottom of the positioning fixture 20 match the positioning planes 22 on both sides of the top of the quick-change nozzle component 3, thus positioning the positioning fixture 20 on the platform 23 at the bottom of the quick-change nozzle component 3. The inner diameter of the middle of the positioning fixture 20 is larger than the outer diameter of the top of the quick-change nozzle component 3, and the top of the positioning fixture 20... The inner diameter matches the outer diameter of the piezoelectric ceramic 19 that needs to be silvered. The piezoelectric ceramic 19 is arc-shaped. The outer circle of the piezoelectric ceramic 19 is positioned by being tightly attached to the top of the positioning fixture 20. The piezoelectric ceramic 19 and the suction nozzle 2 are positioned at the same rotation center. The piezoelectric ceramic 19 is fixed to the suction nozzle 2 by negative pressure adsorption. After the piezoelectric ceramic 19 is positioned, the positioning fixture 20 is removed. The hollow shaft stepper motor 5 drives the suction nozzle quick-change part 3, the suction nozzle 2 and the piezoelectric ceramic 19 to rotate together. The silver paste is applied to the rotating piezoelectric ceramic 19 by dipping the silver-coating pen above. Different specifications of piezoelectric ceramics 19 are matched with different specifications of suction nozzles 2. The suction nozzles 2 can be quickly inserted and removed from the suction nozzle quick-change piece 3, making replacement convenient. Different specifications of piezoelectric ceramics 19 are matched with different specifications of positioning fixtures 20 for positioning. The bottom inner diameter of the positioning fixtures 20 is the same, matching the same suction nozzle quick-change piece 3. The top inner diameter of the positioning fixtures 20 is different, matching piezoelectric ceramics 19 with different outer diameters. To produce piezoelectric ceramics 19 of different specifications, only the corresponding specifications of suction nozzles 2 and positioning fixtures 20 need to be replaced, which is very convenient.

[0015] The quick-change nozzle 3 and the nozzle 2 are higher than the main frame, and a slurry collection cover 1 is set on the main frame around the nozzle 2.

[0016] In this embodiment, the silver-coating pen is controlled by a robotic arm 25.

[0017] The main frame contains a control module, which includes a DC power supply 8, a motor controller 9, a jog switch 10, and a motor stop button 11. The DC power supply 8 is connected to the hollow shaft stepper motor 5 through the motor controller 9, the jog switch 10, and the motor stop button 11. The DC power supply 8 provides power to the hollow shaft stepper motor 5. The motor controller 9 is a known and commonly used motor control circuit. The jog switch 10 and the motor stop button 11 are connected in series in the motor control circuit to control the start and stop of the hollow shaft stepper motor 5.

[0018] The DC power supply 8 is a 24V DC power supply.

[0019] The main frame is composed of a support 12, an upper cover plate 13, a lower cover plate 14, a front cover plate 15, a left cover plate 16, a right cover plate 17, and a rear cover plate 18. The quick-change nozzle 3 and the nozzle 2 are higher than the upper cover plate 13, and a slurry collection cover 1 surrounding the nozzle 2 is provided on the upper cover plate 13.

[0020] The jog switch 10 and the motor stop button 11 are arranged on the upper cover plate 13.

[0021] When using this invention, when there is a processing task, select a suitable nozzle 2 and positioning fixture 20 according to the size of the piezoelectric ceramic 19. Place the positioning fixture 20 onto the nozzle quick-change part 3 using the positioning features of the positioning fixture 20. Then, accurately place the piezoelectric ceramic 19 onto the nozzle 2 using the positioning fixture 20 to keep it concentric. Turn on the negative pressure switch. After the nozzle uses negative pressure to adsorb and fix the piezoelectric ceramic 19, remove the positioning fixture 20. Turn on the jog switch 10. Adjust the speed of the hollow shaft stepper motor 5 according to the size of the piezoelectric ceramic 19. Use a silver pen to apply silver paste to the piezoelectric ceramic 19. The hollow shaft stepper motor 5 achieves silver paste printing by controlling the speed and cooperating with centrifugal force. Then, press the motor stop button 11 to turn off the negative pressure switch. Use tweezers to remove the printed piezoelectric ceramic 19 to complete the printing.

Claims

1. An arc-shaped piezoelectric ceramic silver printing device, characterized in that: It includes a main frame, an adsorption rotation module and a positioning fixture (20). The adsorption rotation module is provided inside the main frame. The adsorption rotation module includes a suction nozzle (2), a suction nozzle quick-change part (3), a top connector (4), a hollow shaft stepper motor (5), a tail connector (6) and a negative pressure air pipe connector (7). The hollow shaft stepper motor (5) is located inside the main frame. The front end of the hollow shaft (21) of the hollow shaft stepper motor (5) is threadedly connected to the suction nozzle quick-change part (3) through the top connector (4). The suction nozzle (2) is a plug-in suction nozzle. The suction nozzle (2) is inserted into the inner hole of the suction nozzle quick-change part (3). The hollow shaft (21) of the hollow shaft stepper motor (5) is connected to the negative pressure air pipe connector (7) via the tail connector (6). The nozzle (2), the inner hole of the nozzle quick-change part (3), the hollow shaft (21) and the negative pressure air pipe connector (7) form a negative pressure gas channel. The outer diameter of the nozzle quick-change part (3) is larger than the outer diameter of the nozzle (2). The top two sides of the nozzle quick-change part (3) are provided with positioning planes (22), and the bottom of the nozzle quick-change part (3) is provided with a platform (23) larger than the outer diameter of the nozzle quick-change part (3). The positioning fixture (20) is a semi-cylindrical shape coaxial with the rotation center of the nozzle (2). The positioning fixture (20) is placed on the platform (23) at the bottom of the quick-change nozzle (3). The inner diameter of the top and bottom of the positioning fixture (20) is larger than the inner diameter of the middle part, and the interior is stepped with a high middle and low ends. The two sides of the bottom of the positioning fixture (20) are respectively provided with positioning plane two (24). The positioning plane two (24) on both sides of the bottom of the positioning fixture (20) matches the positioning plane one (22) on both sides of the top of the quick-change nozzle (3), so that the positioning fixture (20) is positioned on the platform (23) at the bottom of the quick-change nozzle (3). The inner diameter of the middle part of the positioning fixture (20) is larger than the inner diameter of the top of the quick-change nozzle (3). The outer diameter of the positioning fixture (20) is matched with the outer diameter of the piezoelectric ceramic (19) to be printed with silver. The piezoelectric ceramic (19) is arc-shaped. The outer circle of the piezoelectric ceramic (19) is positioned by being close to the top of the positioning fixture (20). The piezoelectric ceramic (19) and the suction nozzle (2) are positioned at the same rotation center. The piezoelectric ceramic (19) is fixed on the suction nozzle (2) by negative pressure adsorption. The hollow shaft stepper motor (5) drives the suction nozzle quick change part (3), the suction nozzle (2) and the piezoelectric ceramic (19) to rotate together. The silver paste is applied to the rotating piezoelectric ceramic (19) by the silver-coating pen above.

2. The arc-shaped piezoelectric ceramic silver printing device according to claim 1, characterized in that: The quick-change nozzle (3) and the nozzle (2) are higher than the main frame, and a slurry collection cover (1) is set on the main frame around the nozzle (2).

3. The circular-arc piezoelectric ceramic silvering device according to claim 1 or 2, characterized in that: The main frame is equipped with a control module, which includes a DC power supply (8), a motor controller (9), a jog switch (10), and a motor stop button (11). The DC power supply (8) is connected to the hollow shaft stepper motor (5) through the motor controller (9), the jog switch (10), and the motor stop button (11). The DC power supply (8) provides power to the hollow shaft stepper motor (5).

4. The circular-arc piezoelectric ceramic silvering device according to claim 3, characterized in that: The main frame is composed of a bracket (12), an upper cover plate (13), a lower cover plate (14), a front cover plate (15), a left cover plate (16), a right cover plate (17), and a rear cover plate (18). The quick-change nozzle component (3) and the nozzle (2) are higher than the upper cover plate (13), and a slurry collection cover (1) is provided on the upper cover plate (13) around the nozzle (2).

5. The circular-arc piezoelectric ceramic silvering device according to claim 4, characterized in that: The jog switch (10) and the motor stop button (11) are arranged on the upper cover plate (13).

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