Piezoelectric ceramic tube polarization tooling

Abstract

The utility model discloses a piezoelectric ceramic tube polarization frock, including insulating base, the surface of the insulating base is provided with the limit slot of accommodating piezoelectric ceramic tube, the bottom of the limit slot is embedded with the multiple conductive metal sheet that uniformly arranged and is protruding upwards, each conductive metal sheet is connected with power negative pole through the conductive busbar of embedding in the insulating base body, and two reed elastic clamps are equipped with in the both ends of limit slot, the utility model discloses simple structure convenient operation, through reed elastic clamp fixed metal stick, for the polarization piezoelectric ceramic tube to add a tetanic direct current field or voltage, guarantee the realization piezoelectric ceramic tube's radial polarization when manual polarization, can batch polarization piezoelectric ceramic tube, effectively improve the polarization efficiency of piezoelectric ceramic tube, be applicable to the radial polarization of tubular piezoelectric ceramic, especially be applicable to the polarization of small size miniature piezoelectric ceramic tube.

Description

Technical Field

[0001] This utility model relates to the field of piezoelectric ceramics and is applicable to the radial polarization of tubular piezoelectric ceramics, specifically a piezoelectric ceramic tube polarization apparatus. Background Technology

[0002] Piezoelectric ceramic tube actuators, also known as piezoelectric / electrostrictive ceramic micro-displacement actuators, have advantages such as small size, high output force, high precision and resolution, and high frequency response. They also generate no heat and produce no noise, and are currently widely used in optics, electronics, aerospace, mechanical manufacturing, bioengineering, robotics, and other fields. The miniature piezoelectric ceramic tube is the core component of a piezoelectric ceramic tube actuator.

[0003] "Polarization" involves applying a strong DC electric field or voltage to a piezoelectric ceramic, causing the ceramic's electric domains to align in the desired direction and thus exhibiting a certain piezoelectric effect. The polarization direction of a piezoelectric ceramic tube is radial polarization. Current polarization techniques mostly involve vertical polarization of piezoelectric ceramic sheets. Without tooling, it is difficult to achieve radial polarization of tubular piezoelectric ceramics, especially for small-sized micro piezoelectric ceramic tubes with dimensions of 1-10 mm. Utility Model Content

[0004] The purpose of this invention is to provide a piezoelectric ceramic tube polarization tooling to solve the problems mentioned in the background art, such as the fact that existing polarization technologies are mostly vertical polarization of piezoelectric ceramic sheets, radial polarization of tubular piezoelectric ceramics is difficult to achieve without tooling, and they are not suitable for polarization of small-sized micro piezoelectric ceramic tubes.

[0005] To achieve the above objectives, this utility model provides the following technical solution: it includes an insulating base; the surface of the insulating base is provided with a limiting groove for accommodating a piezoelectric ceramic tube, and multiple evenly arranged and upwardly protruding conductive metal sheets are pre-embedded at the bottom of the limiting groove. The top of each conductive metal sheet has an arc groove that matches the outer surface of the piezoelectric ceramic tube. Each conductive metal sheet is connected to the negative terminal of the power supply through a conductive busbar pre-embedded in the insulating base; both ends of the limiting groove have two spring-loaded elastic clips fixed on the insulating base and connected to the positive terminal of the power supply, and an electrode rod that matches the inner wall of the piezoelectric ceramic tube is clamped on the two spring-loaded elastic clips.

[0006] Preferably, the limiting groove is fixed with multiple partitions that evenly divide its interior into several segments, and each conductive metal sheet is located in each corresponding segment of the limiting groove.

[0007] Preferably, the top surface of each partition has a positioning groove adapted to the electrode rod, and the center line of each positioning groove is parallel to and coplanar with the center line of each arc groove.

[0008] Preferably, the electrode rod has an even number of polygonal geometric shapes near both ends.

[0009] The beneficial effects of this utility model are: This invention features a simple structure and convenient operation. It can fix a metal rod with a spring clip and apply voltage to the positive and negative conductors to create a strong DC electric field or voltage for the polarized piezoelectric ceramic tube. This ensures radial polarization of the piezoelectric ceramic tube during manual polarization and allows for batch polarization of piezoelectric ceramic tubes. It effectively improves the polarization efficiency of piezoelectric ceramic tubes and is suitable for radial polarization of tubular piezoelectric ceramics, especially for the polarization of small-sized micro piezoelectric ceramic tubes. It solves the technical problems of current polarization technologies, which mostly involve vertical polarization of piezoelectric ceramic sheets, difficulty in achieving radial polarization of tubular piezoelectric ceramics without tooling, and unsuitability for the polarization of small-sized micro piezoelectric ceramic tubes. Attached Figure Description

[0010] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 for Figure 1 AA section view in the middle; Figure 3 for Figure 2 BB section view in the middle.

[0011] In the diagram: 1. Conductive metal sheet; 2. Limiting groove; 3. Positioning groove; 4. Piezoelectric ceramic tube; 5. Electrode rod; 6. Partition plate; 7. Spring clip; 8. Insulating base; 9. Arc groove; 10. Conductive busbar. 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] Please see Figure 1-3 As shown, this invention provides a technical solution for a piezoelectric ceramic tube electrode tooling, used in conjunction with a tooling base and a metal rod, including an insulating base 8; the surface of the insulating base 8 is provided with a limiting groove 2 that can accommodate a piezoelectric ceramic tube 4, and the bottom of the limiting groove 2 is pre-embedded with a plurality of evenly arranged and upwardly protruding conductive metal sheets 1, the top of each conductive metal sheet 1 having an arc groove 9 adapted to the outer surface of the piezoelectric ceramic tube 4, and each conductive metal sheet 1 being connected to the negative terminal of the power supply through a conductive busbar 10 pre-embedded in the body of the insulating base 8; at both ends of the limiting groove 2 are two spring elastic clips 7 fixed on the insulating base 8, one of the spring elastic clips 7 being connected to the positive terminal of the power supply, and an electrode rod 5 adapted to the inner wall of the piezoelectric ceramic tube 4 being clamped on the two spring elastic clips 7, the electrode rod 5 having an even number of polygonal geometric shapes near both ends.

[0014] In this embodiment, the aforementioned limiting groove 2 is fixed with multiple partitions 6 that divide its interior into several segments. Each conductive metal sheet 1 is located in its corresponding segment of the limiting groove 2. The top surface of each partition 6 has a positioning groove 3 that is adapted to the electrode rod 5. The center line of each positioning groove 3 is parallel to and coplanar with the center line of the arc groove 9. The partitions 6 effectively prevent the piezoelectric ceramic tubes 4 from being damaged by mutual compression, while also ensuring that each piezoelectric ceramic tube 4 is evenly distributed and can maintain corresponding contact with the evenly arranged conductive metal sheets 1.

[0015] Specifically, the reed clip 7 is used to hold the metal rod. The reed clip 7 is made of two bent conductive copper sheets welded together. The openings of the two bent conductive copper sheets are obtuse angles. The distance between the openings and the distance between the internal clips are smaller than the rod size of the electrode rod 5, including but not limited to 0.5-1mm, to facilitate insertion and removal of the electrode rod. The electrode rod 5 has an overall cylindrical shape. The two ends of the electrode rod can be machined into square, rectangular, triangular, or rhomboid structures to facilitate stable clamping by the reed clip 7. The external dimensions of the electrode rod 5 match the inner diameter of the piezoelectric ceramic tube 4 to be polarized. The electrode rod 5 is connected in series with the piezoelectric ceramic tube 4 to contact the piezoelectric ceramic tube 4 and, during polarization, connects to the reed clip 7, contacting the inner wall of the piezoelectric ceramic tube 4, and applying a strong DC electric field or voltage to the polarized piezoelectric ceramic tube 4.

[0016] It should be noted that the conductive metal sheet 1 can be, but is not limited to, aluminum or copper sheets with good conductivity and resistance to high temperature and high pressure, and the electrode rod 5 can be, but is not limited to, copper rods, brass rods, iron rods, or aluminum rods with good conductivity. The piezoelectric ceramic tube 4 to be polarized is threaded onto the electrode rod 5, and the electrode rod is fixed with a spring clip 7. Positive and negative wires are connected to the power supply, and the tube is placed in the polarization tank. The power supply is then turned on to apply a strong DC electric field or voltage for polarization as required. This invention has a simple structure, is easy to operate, and effectively improves the polarization efficiency of the piezoelectric ceramic tube 4, especially for small-sized 1-10mm micro piezoelectric ceramic tubes 4.

[0017] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0018] The above embodiments only illustrate preferred embodiments of the present utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the utility model patent. It should be understood that for those skilled in the art, several modifications and improvements can be made without departing from the concept of the present utility model, and these all fall within the protection scope of the present utility model. In the present utility model, unless otherwise explicitly specified and limited, the terms "installation", "connection", "joining", "fixing", etc. should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral part; it can be a mechanical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal communication of two components or the interaction between two components. Among them, there are various ways of detachable installation, such as by plugging and snapping, or by bolt connection, etc.

Claims

1. A piezoelectric ceramic tube polarization tooling comprising an insulating base; characterized in that: The surface of the insulating base (8) is provided with a limiting groove (2) that can accommodate the piezoelectric ceramic tube (4). The bottom of the limiting groove is pre-embedded with a number of evenly arranged and upwardly protruding conductive metal sheets (1). The top of each conductive metal sheet (1) has an arc groove (9) that matches the outer surface of the piezoelectric ceramic tube (4). Each conductive metal sheet (1) is connected to the negative terminal of the power supply through a conductive busbar (10) pre-embedded in the body of the insulating base (8). The two ends of the limiting groove (2) are fixed on the insulating base (8) and connected to the positive terminal of the power supply. The electrode rod (5) adapted to the inner wall of the piezoelectric ceramic tube (4) is clamped on the two spring elastic clips (7).

2. The piezoelectric ceramic tube poling fixture of claim 1, wherein: The limiting groove (2) is fixed with multiple partitions (6) that evenly divide its interior into several segments, and each conductive metal sheet (1) is located in the corresponding limiting groove (2).

3. The piezoelectric ceramic tube poling fixture of claim 2, wherein: The top surface of the partition (6) has a positioning groove (3) that is compatible with the electrode rod (5). The center line of each positioning groove (3) is parallel to and coplanar with the center line of each arc groove (9).

4. The piezoelectric ceramic tube poling fixture according to any one of claims 1 to 3, characterized in that: The electrode rod (5) has an even number of polygonal geometric shapes near both ends.

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