Multifunctional oil bath polarization device

Abstract

A multifunctional oil bath polarization device includes an oil bath box and a cover mounted on top of the oil bath box. A lower electrode of the oil bath box is disposed on the copper liner, and an upper electrode of the oil bath box is movably disposed on the cover. A multifunctional clamp is provided inside the oil bath box. The multifunctional clamp includes an upper clamp cover and a lower clamp cover, both made of high-temperature resistant insulating material. The upper and lower clamp covers are fixedly connected by a metal rod. Several upper electrodes are movably disposed on the upper clamp cover, and several lower electrodes are disposed on the lower clamp cover at positions corresponding to the upper electrodes. A test sample is placed between the upper and lower electrodes. This invention can apply voltage to both surfaces of the sample, or to the same surface of the sample. It has a simple structure, diverse functions, and can be applied to the testing and polarization processes of various piezoelectric materials of different shapes, sizes, and types, thus possessing significant application value.

Description

Technical Field

[0001] This invention belongs to the field of experimental equipment technology, specifically relating to a multifunctional oil bath polarization device, which can be used for the testing and polarization processes of various piezoelectric materials of different shapes and sizes. Background Technology

[0002] Based on the application categories of piezoelectric materials, there are two types of testing and polarization processes: one involves placing the piezoelectric material between two electrodes for testing and polarization; for example, when testing and polarizing common circular piezoelectric ceramics, voltage needs to be applied to both the upper and lower surfaces of the sample. The other involves placing the piezoelectric material between two upper electrodes; for example, when testing and polarizing multilayer parallel piezoelectric ceramics, only voltage needs to be applied to the same surface of the sample. This necessitates two different types of fixtures for testing and polarizing piezoelectric materials, and each fixture can only test and polarize piezoelectric materials of one shape and size. Therefore, for ease of use and cost savings, this application designs a device that can be used to test and polarize various piezoelectric materials of different shapes and sizes. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a multifunctional oil bath polarization device for testing and polarization processes of piezoelectric materials of various shapes and sizes, which addresses the shortcomings of the prior art. The present invention solves the problem that general polarization devices can only test and polarize one type of piezoelectric material and whose shape and size cannot be arbitrarily changed.

[0004] The following technical solution is adopted to solve the technical problem of the present invention.

[0005] A multifunctional oil bath polarization device includes an oil bath box and a cover mounted on top of the oil bath box. The interior of the oil bath box is lined with copper, and a lower electrode of the oil bath box is disposed on the copper liner. An upper electrode of the oil bath box is movably disposed on the cover. A multifunctional clamp is provided inside the oil bath box. The multifunctional clamp includes an upper clamp cover and a lower clamp cover, both made of high-temperature resistant insulating material. The upper and lower clamp covers are fixedly connected by a metal rod. Several upper electrodes are movably disposed on the upper clamp cover, and several lower electrodes are disposed on the lower clamp cover at positions corresponding to the upper electrodes. The upper and lower electrodes are electrically connected to the lower electrode of the oil bath box. A test sample is placed between the upper and lower electrodes. The lower clamp cover is inside the oil bath box and contacts the lower electrode of the oil bath box during use.

[0006] The upper cover of the fixture is provided with annular upper copper plates and upper cover grooves at intervals. Several upper electrodes are movably installed in the upper cover grooves. When in use, the upper electrodes are in contact with the upper copper plates. The lower cover of the fixture is provided with annular lower copper plates and lower cover grooves at intervals. Several lower electrodes are movably installed in the lower cover grooves.

[0007] The upper electrode includes a back cover, an electrode sleeve, an upper electrode nut, a spring, and a copper needle. The spring is connected between the back cover and the copper needle. The spring is fitted inside the electrode sleeve. The upper end of the electrode sleeve is adapted to the back cover. The upper electrode nut is installed at the lower end of the electrode sleeve. The spring passes through the upper cover of the clamp. The back cover and the electrode nut are located on the upper and lower sides of the upper cover of the clamp, respectively.

[0008] The clamp cover is configured as two non-communicating parts, and two oil bath electrodes are movably disposed on the cover, with each oil bath electrode contacting each part of the clamp cover.

[0009] The clamp cover and the upper copper sheet are provided with a first copper cap, and the upper electrode of the oil bath box is inserted into the first copper cap located on the clamp cover and the upper copper sheet, so that the upper electrode of the oil bath box is connected to the upper copper sheet.

[0010] The lower electrode includes a screw with a flat upper end and a lower electrode nut. The screw and the lower electrode nut work together to fix the lower electrode on the lower cover of the fixture.

[0011] The lower cover of the fixture is provided with a positioning hole, and a second copper cap 17 is installed on the positioning hole. The lower electrode of the oil bath box contacts the annular lower copper sheet through the second copper cap 17.

[0012] This invention allows for the application of voltage to both the upper and lower surfaces of a sample, as well as to the same surface. Furthermore, the upper and lower electrodes of the multi-functional fixture can move and be fixed freely. The upper and lower electrodes are located in grooves within the upper and lower covers of the fixture, respectively. They can move and be fixed freely along the gaps in the fixture covers. The number of electrodes can be increased or decreased as needed. Simultaneously, the spring within the upper electrode is extendable and retractable, enabling the fixture to hold samples of any shape, size, and thickness. Both the upper and lower covers of the multi-functional fixture are conductive, allowing their electrodes to be charged. However, the upper and lower covers are insulated from each other, ensuring that the polarity of the applied voltage is not affected. The upper cover is divided into two parts by an insulator, allowing it to carry both the same and different charges. By applying the same and different voltages to the electrodes on the oil bath, the testing and polarization process of the same and different surfaces of the piezoelectric material can be achieved.

[0013] The outer layer of the oil bath box of this invention is made of high-temperature resistant insulating material, and the inner layer is made of copper lining. The upper cover of the oil bath box contains two movable upper electrodes, and the lower copper lining has a lower electrode at its center. The oil bath box contains a multi-functional clamp, the upper and lower covers of which are both made of high-temperature resistant insulating material. The upper copper sheet is fixed to the upper cover of the clamp and is divided into two insulated parts. The lower copper sheet is fixed to the lower cover of the clamp. Both the clamp and the copper sheet have concentric gaps. The upper and lower electrodes can move freely between the circular gaps, and their positions can be fixed by nuts. The upper electrode has a built-in spring, allowing it to extend and retract freely to hold piezoelectric materials of different thicknesses and sizes. When the piezoelectric material being tested and polarized requires voltage to be applied to both its upper and lower surfaces, the two electrodes are moved to contact the upper and lower surfaces of the piezoelectric material respectively. A positive voltage is applied to the upper electrode, and a negative voltage is applied to the lower electrode. When the piezoelectric material being tested and polarized requires both a positive and a negative voltage to be applied to one surface simultaneously, the two upper electrodes are moved to appropriate positions on the sample surface, and a positive and a negative voltage are applied to the two upper electrode posts respectively. This invention's device has a simple structure, diverse functions, and can be applied to the testing and polarization processes of various piezoelectric materials of different shapes, sizes, and types, thus possessing significant application value. Attached Figure Description

[0014] Figure 1 This is a front view of the fixture structure of the present invention;

[0015] Figure 2 This is a top view of the fixture structure of the present invention;

[0016] Figure 3 This is a left view of the clamp structure of the present invention;

[0017] Figure 4 This is a front view of the oil bath box of the present invention;

[0018] Figure 5 This is a top view of the oil bath box of the present invention;

[0019] Figure 6 This is a schematic diagram of the assembly of the oil bath box and fixture of the present invention;

[0020] Figure 7 This is a schematic diagram of the assembly of the copper sheet and the clamp cover of the present invention;

[0021] Figure 8 This is a schematic diagram of the assembly of the lower copper sheet and the lower cover of the fixture according to the present invention;

[0022] Figure 9 This is a front view of the shape and structure of the upper electrode of the present invention;

[0023] Figure 10 This is a top view of the shape and structure of the upper electrode of the present invention;

[0024] Figure 11This is a schematic diagram showing the placement of the test sample according to the present invention;

[0025] Figure 12 This is a schematic diagram of the wiring of the oil bath box of the present invention. Detailed Implementation

[0026] The present invention will now be described in further detail with reference to the accompanying drawings.

[0027] As shown in the figure, a multifunctional oil bath polarization device includes an oil bath box 21 and a cover 18 installed above the oil bath box 21. The inside of the oil bath box 21 is a copper liner 22. A lower electrode 23 is installed on the copper liner at the center of the bottom of the oil bath box 21, and the lower electrode 23 is connected to the terminal block at the top of the copper liner of the oil bath box 21. Two first copper caps 14 are provided on the cover 1, and an upper electrode 19 is movably inserted into the first copper caps 14, so that the upper electrode is connected to the upper copper plate 2. A multifunctional clamp is provided inside the oil bath box 21, which includes a clamp upper cover 1 and a clamp lower cover 9. Both the clamp upper cover 1 and the clamp lower cover 9 are made of high-temperature resistant insulating material, and the clamp upper cover 1 and the clamp lower cover 9 are fixedly connected by four metal rods 11. An annular upper copper sheet 2 and an upper cover groove 15 are spaced apart on the upper cover 1 of the clamp. The upper cover 1 and the upper copper sheet 2 are physically connected by a positioning pin 3. The upper copper sheet 2 and the upper cover groove 15 are divided into two parts by a high-temperature resistant insulating material. The two separated parts can be subjected to different positive and negative voltages, such as... Figure 1 As shown, each of the upper electrodes 19 of the oil bath box contacts each part of the upper cover 1 of the fixture. Several upper electrodes are movably installed in the upper cover groove 15. During use, the upper electrodes contact the upper copper sheet 2. The lower cover 12 of the fixture is provided with an annular lower copper sheet 13 and a lower cover groove 16. The lower cover 12 and the lower copper sheet 13 are physically connected together by a second copper cap 17. Several lower electrodes are movably installed in the lower cover groove 16. The lower electrodes are located at positions corresponding to the upper electrodes. The upper and lower electrodes are electrically connected to the lower electrode 23 of the oil bath box. A test sample is placed between the upper and lower electrodes. The lower cover 12 of the fixture has positioning holes, and a second copper cap 17 is installed in the positioning holes. The lower electrode of the oil bath box contacts the lower copper sheet 13 through the second copper cap 17. The lower electrode 23 located at the center of the copper liner 22 is then connected through the second copper cap 17, energizing the lower cover 9 of the fixture. The upper electrode includes a rear cover 4, an upper electrode sleeve 5, an upper electrode nut 6, a spring 7, and a copper needle 8. The spring 7 connects the rear cover 4 and the copper needle 8, and is fitted inside the electrode sleeve 5. The upper end of the electrode sleeve 5 is fitted to the rear cover 4. The upper electrode nut 6 is installed at the lower end of the electrode sleeve 5. In use, the test sample is placed on the lower end of the copper needle 8. The electrode sleeve 5 and the upper electrode nut 6 are located on the upper and lower sides of the fixture cover 1 and the annular upper copper plate 2, respectively. The electrode sleeve 5 and the upper electrode nut 6 cooperate to fix the upper electrode to the fixture cover 1 and the annular upper copper plate 2, achieving contact between the upper electrode and the upper copper plate 2. Simultaneously, the spring 7 ensures tight contact between the lower end of the copper needle 8 and the test sample. Figure 1 As shown.

[0028] In use, the test sample is placed at the lower end of the copper needle 8. The electrode sleeve 5 and the upper electrode nut 6 are located on the upper and lower sides of the clamp cover 1 and the annular upper copper plate 2, respectively. The electrode sleeve 5 and the upper electrode nut 6 cooperate to fix the upper electrode to the clamp cover 1 and the annular upper copper plate 2, achieving contact between the upper electrode and the upper copper plate 2. At the same time, the spring 7 ensures that the lower end of the copper needle 8 is in close contact with the test sample.

[0029] In use, the oil bath box may or may not contain silicone oil. The multi-functional fixture is placed in the oil bath box 21 and contacts the lower electrode 23 of the oil bath box at the center of the copper liner 22. Figure 6 As shown. Move the upper and lower electrodes freely to their appropriate positions, then tighten the nuts on the upper and lower electrodes respectively to secure them. The sample is clamped between the two electrodes in the multi-functional fixture; the sample thickness is adjustable within the elastic limit of spring 7 on the upper electrode. The multi-functional fixture can hold multiple piezoelectric samples of different shapes and sizes, such as... Figure 11 The diagram shows the process. When testing and polarizing a piezoelectric sample requires applying voltage to two different surfaces, the upper electrode 19 of the oil bath 21 is charged with a positive (negative) voltage, while the lower electrode 23 of the oil bath liner is charged with a negative (positive) voltage. This allows the upper and lower electrodes of the multi-functional fixture to carry positive and negative voltages respectively for testing or polarizing the sample. When testing and polarizing a piezoelectric material requires applying both positive and negative voltages simultaneously to the same surface of the sample, the lower electrode 23 of the oil bath liner is not charged. Instead, positive and negative voltages are applied to the two upper electrodes 19 of the oil bath liner, respectively. This allows the upper electrodes of the multi-functional fixture to apply positive and negative voltages to the sample surface. The number and position of the upper and lower electrodes remain consistent, and the number of electrodes can be freely increased or decreased according to the size and quantity of the sample. The shape of the multi-functional fixture includes, but is not limited to, circles and squares, and the shape of the slots includes, but is not limited to, circles and squares.

Claims

1. A multifunctional oil bath polarization device, comprising an oil bath box and a cover mounted on top of the oil bath box, wherein the interior of the oil bath box is lined with copper, a lower electrode of the oil bath box is disposed on the copper liner, and an upper electrode of the oil bath box is movably disposed on the cover, characterized in that: The oil bath box (21) is equipped with a multi-functional clamp, which includes a clamp upper cover (1) and a clamp lower cover (12). The clamp upper cover (1) and clamp lower cover (12) are made of high temperature resistant insulating material. The clamp upper cover (1) and clamp lower cover (12) are fixedly connected by a metal rod (11). The clamp upper cover (1) is movably provided with several upper electrodes. The clamp lower cover (12) is provided with several lower electrodes at positions corresponding to the upper electrodes. The upper electrodes and lower electrodes are connected to the lower electrode (23) of the oil bath box. The test sample is placed between the upper electrodes and the lower electrodes. The clamp lower cover (12) is inside the oil bath box (21) and contacts the lower electrode (23) of the oil bath box when in use. The upper cover (1) of the clamp is provided with annular upper copper plates (2) and upper cover grooves (15) spaced apart. Several upper electrodes are movably installed in the upper cover grooves (15). When in use, the upper electrodes are in contact with the upper copper plates (2). The lower cover (12) of the clamp is provided with annular lower copper plates (13) and lower cover grooves (16) spaced apart. Several lower electrodes are movably installed in the lower cover grooves (16). The clamp cover (1) is configured as two non-communicating parts. Two oil bath electrode (19) are movably disposed on the cover (18), and each oil bath electrode (19) contacts each part of the clamp cover (1).

2. The multifunctional oil bath polarization device according to claim 1, characterized in that: The upper electrode includes a back cover (4), an electrode sleeve (5), an upper electrode nut (6), a spring (7), and a copper needle (8). The spring (7) is connected between the back cover (4) and the copper needle (8). The spring (7) is fitted inside the electrode sleeve (5). The upper end of the electrode sleeve (5) is adapted to the back cover (4). The upper electrode nut (6) is installed at the lower end of the electrode sleeve (5). The spring (7) passes through the upper cover (1) of the clamp. The back cover (4) and the upper electrode nut (6) are located on the upper and lower sides of the upper cover (1) of the clamp, respectively.

3. The multifunctional oil bath polarization device according to claim 1, characterized in that: The clamp cover (1) and the upper copper sheet (2) are provided with a first copper cap (14), and the upper electrode (19) of the oil bath box is inserted into the first copper cap (14) located on the clamp cover (1) and the upper copper sheet (2), so that the upper electrode (19) of the oil bath box is connected to the upper copper sheet (2).

4. The multifunctional oil bath polarization device according to claim 3, characterized in that: The lower electrode includes a flat upper screw (9) and a lower electrode nut (10), which work together to fix the lower electrode on the lower cover (12) of the fixture.

5. A multifunctional oil bath polarization device according to claim 3, characterized in that: The fixture lower cover (12) is provided with a positioning hole, and a second copper cap (17) is installed on the positioning hole. The lower electrode of the oil bath box contacts the annular lower copper sheet (13) through the second copper cap (17).

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