A columnar interdigitated electrode piezoelectric ceramic polarization platform device

Abstract

The present invention belongs to the technical field of piezoelectric ceramic polarization, and particularly relates to a columnar interdigital electrode piezoelectric ceramic polarization platform device, comprising a base plate, a polarization chamber assembly, a first wire groove, a first locking nut, a first handle, a second locking nut, a protective cover plate, an oil inlet and outlet mesh hole, a second handle, a third locking nut, a fourth locking nut, a first terminal, a locking nut, a base plate through hole, and a polarization chamber assembly arranged on the base plate and connected to the base plate. It does not require welding electrodes when used specifically, has high positioning accuracy for piezoelectric ceramics, has perfect high-voltage protection measures, can simultaneously polarize single or multiple columnar piezoelectric ceramics, is simple to operate, and meets people's use requirements for the columnar interdigital electrode piezoelectric ceramic polarization platform device.

Description

Technical Field

[0001] The invention belongs to the technical field of piezoelectric ceramic polarization, and in particular relates to a columnar interdigital electrode piezoelectric ceramic polarization platform device. Background Art

[0002] Piezoelectric ceramics need to be polarized before they can have driving performance. At present, most of the polarization processes for columnar piezoelectric ceramics on the market still use traditional polarization methods. Electrodes are attached to the surface of piezoelectric ceramics by spraying, pasting, coating, etc., and then the DC power line is connected to the polarization electrode on the surface of the columnar piezoelectric ceramic by welding. Finally, it is placed in a polarization chamber for polarization. Fig.10 As shown in the figure, the electrode structure is arranged in a cross-finger shape on the outer surface of the piezoelectric ceramic cylinder. When polarized by the traditional polarization method, it is easy to cause damage to the columnar cross-finger electrode piezoelectric ceramic substrate and the polarization electrode during the welding process. In addition, there are no high-voltage protection measures. Short circuit is very likely to occur during high-voltage polarization, posing a serious safety hazard. Summary of the invention

[0003] In order to solve the shortcomings and deficiencies in the above-mentioned background technology, the present invention proposes a columnar interdigital electrode piezoelectric ceramic polarization platform device. It has the advantages of no need to weld electrodes, high positioning accuracy for piezoelectric ceramics, perfect high-voltage protection measures, and can polarize single or multiple columnar piezoelectric ceramics at one time, and is easy to operate. In order to achieve the above-mentioned purpose, the technical scheme of the present invention is as follows: a columnar interdigital electrode piezoelectric ceramic polarization platform device, comprising a base plate, a polarization chamber assembly, a first wire groove, a first locking nut, a first handle, a second locking nut, a protective cover, an oil inlet and outlet mesh hole, a second handle, a third locking nut, a fourth locking nut, a first terminal, a locking nut, a base plate through hole, a second wire groove, a second terminal, a threaded through hole, and a protective cover through hole. The polarization chamber assembly is arranged on the base plate and connected to the base plate. The base plate is provided with a first wire groove and a second wire groove for wire embedding and installation. The first terminal and the second terminal are arranged on the upper part of the base plate and fixedly connected to the base plate. The first terminal is connected to the initial end of the first wire groove, and the second terminal is connected to the initial end of the second wire groove. The first handle and the second handle for installing the protective cover are arranged on both sides of the upper part of the base plate. The protective cover is installed on the first handle and the second handle and covers the polarization chamber assembly between the base plate and the protective cover.

[0004] The polarization chamber assembly mainly includes a movable spring, a first lock, a first semi-polarization chamber, a second semi-polarization chamber, a second lock, a link, an oil seepage hole, a first through hole, a second through hole, a first polarization line groove, and a second polarization line groove. The first semi-polarization chamber is fixed on a bottom plate, and the second semi-polarization chamber is hinged to the first semi-polarization chamber through a link, so that the first semi-polarization chamber and the second semi-polarization chamber can be opened and closed. A first lock is provided on the first semi-polarization chamber, and a second lock is provided on the second semi-polarization chamber. The first lock and the second lock are connected by a movable spring.

[0005] The first semi-polarization chamber is provided with a first polarization line slot and a second polarization line slot for embedding wires in a forked shape, and wires for polarization operation are installed in the first polarization line slot and the second polarization line slot. The first wire slot is connected to the second polarization line slot through a first through hole, and the second wire slot is connected to the first polarization line slot through a second through hole.

[0006] The first semi-polarization chamber is provided with an oil seepage hole.

[0007] The protective cover plate is provided with a protective cover plate through hole for the first handle and the second handle to be installed through, and a threaded through hole is provided in the radial direction of the protective cover plate through hole.

[0008] The threaded through hole is provided with a first locking nut, a second locking nut, a third locking nut and a fourth locking nut for locking the protective cover plate on the first handle and the second handle.

[0009] The first locking nut and the second locking nut pass through the threaded through hole to fix the protective cover plate on the first handle. By loosening and tightening the first locking nut and the second locking nut, the protective cover plate can be moved up and down along the first handle.

[0010] The third locking nut and the fourth locking nut pass through the threaded through hole to fix the protective cover plate on the second handle. By loosening and tightening the third locking nut and the fourth locking nut, the protective cover plate can be moved up and down along the second handle.

[0011] The protective cover plate is provided with oil inlet and outlet mesh holes.

[0012] The first handle and the second handle are U-shaped structures, and locking nuts are installed at the openings at both ends of the U-shaped structure. The open ends of the U-shaped structure pass through the protective cover plate through holes on the protective cover plate and are connected to the locking nuts through the bottom plate through holes.

[0013] At least one polarization chamber assembly is arranged on the bottom plate.

[0014] The material of the polarization platform device is polytetrafluoroethylene; the material of the metal electrodes embedded in the first terminal, the second terminal and the first wire groove, the second wire groove, the first polarization groove and the second polarization groove are all conductive silver.

[0015] The beneficial effects of the present invention are as follows: the core of the present invention is to provide a columnar forked-finger electrode piezoelectric ceramic polarization platform device, which does not require electrode welding during specific use, has high positioning accuracy for piezoelectric ceramics, has perfect high-voltage protection measures, can polarize single or multiple columnar piezoelectric ceramics at the same time, is simple to operate, and meets people's requirements for the use of the columnar forked-finger electrode piezoelectric ceramic polarization platform device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of this patent;

[0017] Figure 2 It is a bottom view of this patent;

[0018] Figure 3 It is a schematic diagram of the structure of the base plate;

[0019] Figure 4 is a top view of the base plate;

[0020] Figure 5 is a schematic diagram of the structure of the polarization chamber components;

[0021] Figure 6 It is the left view of the polarization chamber assembly;

[0022] Figure 7 is a right view of the polarization chamber assembly;

[0023] Figure 8 It is a schematic diagram of the internal structure of the polarization chamber assembly;

[0024] Fig. 9 It is a schematic diagram of the structure of the protective cover;

[0025] Fig.10 It is a schematic diagram of a columnar interdigitated electrode piezoelectric ceramic;

[0026] The numbers in the figure are: 1, bottom plate; 2, polarization chamber assembly; 3, first wire groove; 4, first locking nut; 5, first handle; 6, second locking nut; 7, protective cover; 8, oil inlet and outlet mesh holes; 9, second handle; 10, third locking nut; 11, fourth locking nut; 12, first terminal; 13, locking nut; 14, bottom plate through hole; 15, second wire groove; 16, second terminal; 17, threaded through hole; 18, protective cover through hole; 201, movable spring; 202, first locking buckle; 203, first semi-polarization chamber; 204, second semi-polarization chamber; 205, second locking buckle; 206, connecting piece; 207, oil seepage hole; 208, first through hole; 209, second through hole; 210, first polarization wire groove; 211, second polarization wire groove. DETAILED DESCRIPTION

[0027] The core of the present invention is to provide a columnar interdigital electrode piezoelectric ceramic polarization platform device, which does not require welding electrodes when used, has high positioning accuracy for piezoelectric ceramics, and has perfect high-voltage protection measures. It can simultaneously polarize a single or multiple columnar piezoelectric ceramics, and is easy to operate, meeting people's requirements for the use of columnar interdigital electrode piezoelectric ceramic polarization platform devices. In order to enable people in this technical field to better understand the technical solution of this patent, the following is combined with the attached Figures 1 to 10 This patent is further described.

[0028] Specific embodiment 1: A columnar interdigital electrode piezoelectric ceramic polarization platform device, including a bottom plate 1; a polarization chamber assembly 2; a first wire groove 3; a first locking nut 4; a first handle 5; a second locking nut 6; a protective cover plate 7; an oil inlet and outlet mesh hole 8; a second handle 9; a third locking nut 10; a fourth locking nut 11; a first terminal 12; a locking nut 13; a bottom plate through hole 14; a second wire groove 15; a second terminal 16; a threaded through hole 17; a protective cover plate through hole 18, the polarization chamber assembly 2 is arranged on the bottom plate 1 and connected to the bottom plate 1, the bottom plate 1 is made of "plastic king" polytetrafluoroethylene, and during high-voltage polarization, the metal wire is well insulated from the metal wall of the oil bath box. The bottom plate 1 is provided with a first wire groove 3 and a second wire groove 15 for wire inlay installation to prevent the wire from falling off and causing a short circuit during the polarization process, which may cause safety hazards to the equipment and the human body. The first terminal 12 and the second terminal 16 are arranged on the upper part of the bottom plate 1 and are fixedly connected to the bottom plate 1. The first terminal 12 is connected to the initial end of the first wire groove 3, and the second terminal 16 is connected to the initial end of the second wire groove 15. The DC power line can be directly electrically connected to the first terminal 12 and the second terminal 16, avoiding damage to the polarization platform caused by welding of the DC power line and the wire. The first handle 5 and the second handle 9 for installing the protective cover 7 are arranged on both sides of the upper part of the bottom plate 1. The closed ends of the first handle 5 and the second handle 9 are higher than the silicone oil working height. The polarization platform can be safely placed in or pulled out before and after polarization to avoid silicone oil splashing and causing harm to the human body. The protective cover plate 7 is installed on the first handle 5 and the second handle 9 and covers the polarization chamber assembly 2 between the bottom plate 1 and the protective cover plate 7 to prevent the piezoelectric ceramic from falling off during the polarization process. The polarization chamber assembly 2 mainly includes a movable spring 201, a first lock 202, a first half polarization chamber 203, a second half polarization chamber 204, a second lock 205, a link 206, an oil seepage hole 207, a first through hole 208, a second through hole 209, a first polarization line slot 210, a second polarization line slot 211, and the first half polarization chamber 203 is fixed on the bottom plate 1 The second semi-polarization chamber 204 is hinged to the first semi-polarization chamber 203 through a link 206, so that the first semi-polarization chamber 203 and the second semi-polarization chamber 204 can be opened and closed. A first lock buckle 202 is arranged on the first semi-polarization chamber 203, and a second lock buckle 205 is arranged on the second semi-polarization chamber 204. The first lock buckle 202 and the second lock buckle 205 are connected by a movable spring 201 to prevent the polarization chamber assembly 2 from being damaged or falling off when the size changes due to the thermal expansion coefficient or there are errors in the piezoelectric ceramic structure.The first polarization chamber 203 is provided with a first polarization line slot 210 and a second polarization line slot 211 for embedding wires in a forked-finger distribution. The first polarization line slot 210 and the second polarization line slot 211 are arranged in a forked-finger distribution to improve the polarization operation effect. Wires for polarization operation are installed in the first polarization line slot 210 and the second polarization line slot 211. Compared with the traditional electrode attachment technology, the polarization line slot reduces the test cost and improves the operability. The first wire slot 3 is connected to the second polarization line slot 211 through the first through hole 208, and the second wire slot 15 is connected to the first polarization line slot 210 through the second through hole 209. The first semi-polarization chamber 203 is provided with an oil seepage hole 207, which connects the inside and outside of the polarization chamber assembly 2 to facilitate the entry and exit of oil, and is also suitable for oil bath polarization, reducing the breakdown rate of piezoelectric ceramics, improving the polarization efficiency, and ensuring the polarization quality. A protective cover through hole 18 for the first handle 5 and the second handle 9 to be installed therethrough is provided on the protective cover 7, and a threaded through hole 17 is provided in the radial direction of the protective cover through hole 18. The first locking nut 4, the second locking nut 6, the third locking nut 10 and the fourth locking nut 11 for locking the protective cover 7 on the first handle 5 and the second handle 9 are installed in the threaded through hole 17. The first locking nut 4 and the second locking nut 6 pass through the threaded through hole 17 to fix the protective cover 7 on the first handle 5. By loosening and tightening the first locking nut 4 and the second locking nut 6, the protective cover 7 can be moved up and down along the first handle 5. The third locking nut 10 and the fourth locking nut 11 pass through the threaded through hole 17 to fix the protective cover 7 on the second handle 9. By loosening and tightening the third locking nut 10 and the fourth locking nut 11, the protective cover 7 can be moved up and down along the second handle 9. The protective cover plate 7 is provided with oil inlet and outlet mesh holes 8, which enhance the fluidity of silicone oil during oil bath polarization and play a good role in insulation and heating. The first handle 5 and the second handle 9 are U-shaped structures, and locking nuts 13 are installed at the openings at both ends of the U-shaped structure. The open end of the U-shaped structure passes through the protective cover plate through hole 18 on the protective cover plate 7 and is connected to the locking nut 13 through the bottom plate through hole 14. According to different usage requirements, at least one polarization chamber assembly 2 is provided on the bottom plate 1. The polarization platform device material is made of polytetrafluoroethylene, which can be used for a long time at -180 to 260°C and is suitable for high-temperature oil bath polarization; the metal electrode material embedded in the first terminal 12, the second terminal 16 and the first wire groove 3, the second wire groove 15, the first polarization wire groove 210, and the second polarization wire groove 211 is made of conductive silver.The specific use process of this patent is as follows: put the piezoelectric ceramic into the polarization chamber assembly 2, use the movable spring 201 to connect the first semi-polarization chamber 203 and the second semi-polarization chamber 204, the first handle 5 and the second handle 9 pass through the protective cover plate through hole 18 on the protective cover plate 7 and the bottom plate through hole 14 on the bottom plate 1 respectively, loosen the first locking nut 4, the second locking nut 6, the third locking nut 10, and the fourth locking nut 11, so that the protective cover plate 7 is close to the upper part of the polarization chamber assembly 2, adjust the locking nut 13 to connect the first handle 5 and the second handle 9 to the bottom plate 1, and fix the positive and negative poles of the DC power supply to the first terminal 12 and the second terminal 16. At room temperature, place the polarization platform in the oil bath box, when the silicone oil is heated to the polarization temperature, turn on the DC power switch, set the polarization voltage, keep the DC voltage continuously output according to the required polarization time, turn off the oil bath box heating device, wait for the silicone oil to cool to room temperature, turn off the DC power switch, take out the polarization platform, and the piezoelectric ceramic is polarized. Finally, it should be noted that the above is only a preferred embodiment of this patent and is not intended to limit this patent. Although this patent is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features with equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of this patent shall be included in the protection scope of this patent.

Claims

1. A columnar interdigital electrode piezoelectric ceramic polarization platform device, characterized in that: It includes a bottom plate, a polarization chamber assembly, a first wire groove, a first locking nut, a first handle, a second locking nut, a protective cover plate, an oil inlet and outlet mesh hole, a second handle, a third locking nut, a fourth locking nut, a first terminal, a locking nut, a bottom plate through hole, a second wire groove, a second terminal, a threaded through hole, and a protective cover plate through hole. The polarization chamber assembly is arranged on the bottom plate and connected to the bottom plate. The bottom plate is provided with a first wire groove and a second wire groove for wire inlay installation. The first terminal and the second terminal are arranged on the upper part of the bottom plate and are fixedly connected to the bottom plate. The first terminal is connected to the initial end of the first wire groove, and the second terminal is connected to the initial end of the second wire groove. The first handle and the second handle for installing the protective cover plate are arranged on both sides of the upper part of the bottom plate. The protective cover plate is installed on the first handle and the second handle and covers the polarization chamber assembly between the bottom plate and the protective cover plate. The polarization chamber assembly mainly includes a movable spring, a first lock, a first semi-polarization chamber, a second semi-polarization chamber, a second lock, a link, an oil seepage hole, a first through hole, a second through hole, a first polarization line slot, and a second polarization line slot. The first semi-polarization chamber is fixed on the bottom plate, and the second semi-polarization chamber is hinged to the first semi-polarization chamber through the link, so that the first semi-polarization chamber and the second semi-polarization chamber can be opened and closed. The first semi-polarization chamber is provided with a first lock, and the second semi-polarization chamber is provided with a second lock, and the first lock and the second lock are connected by a movable spring. A first polarization line slot and a second polarization line slot for embedding conductors are provided in the first semi-polarization chamber, and conductors for polarization operation are installed in the first polarization line slot and the second polarization line slot; The first wire groove is connected with the second polarization wire groove through the first through hole, and the second wire groove is connected with the first polarization wire groove through the second through hole.

2. A columnar interdigital electrode piezoelectric ceramic polarization platform device according to claim 1, characterized in that: The first semi-polarization chamber is provided with an oil seepage hole.

3. The columnar interdigital electrode piezoelectric ceramic polarization platform device according to claim 1, characterized in that: The protective cover plate is provided with a protective cover plate through hole for the first handle and the second handle to be installed through, and a threaded through hole is provided in the radial direction of the protective cover plate through hole.

4. The columnar interdigital electrode piezoelectric ceramic polarization platform device according to claim 1, characterized in that: A first locking nut, a second locking nut, a third locking nut and a fourth locking nut for locking the protective cover plate on the first handle and the second handle are installed in the threaded through hole.

5. The columnar interdigital electrode piezoelectric ceramic polarization platform device according to claim 1, characterized in that: The first locking nut and the second locking nut pass through the threaded through hole to fix the protective cover plate on the first handle, and the protective cover plate can be moved up and down along the first handle by loosening and tightening the first locking nut and the second locking nut.

6. The columnar interdigital electrode piezoelectric ceramic polarization platform device according to claim 1, characterized in that: The third locking nut and the fourth locking nut pass through the threaded through hole to fix the protective cover plate on the second handle, and the protective cover plate can be moved up and down along the second handle by loosening and tightening the third locking nut and the fourth locking nut.

7. The columnar interdigital electrode piezoelectric ceramic polarization platform device according to claim 1, characterized in that: The protective cover plate is provided with oil inlet and outlet mesh holes.

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