Piezoelectric ceramic polarization clamp

Abstract

The utility model relates to a piezoelectric ceramic polarization clamp, which comprises a seat body, an electrode and a driving part, the electrode comprises a connecting electrode, an electrode shaft and an electrode needle, the connecting electrode is mounted on the seat body, the electrode shaft is rotationally mounted on the seat body, and one end of the electrode needle is connected to the electrode shaft; and the driving part is mounted on the seat body, is in driving connection with the electrode shaft and is used for driving the electrode shaft to rotate, so that the electrode needle can drive a workpiece sleeved on the electrode needle to press against or break away from the connecting electrode when rotating along with the electrode shaft. According to the scheme, an operator only needs to sleeve the circular tube sample on the electrode needle and then correspondingly drive the electrode shaft to rotate, so that the operation is simple and convenient, the polarization efficiency is improved, the sample is not easy to extrude and damage, the sample quality is ensured, the structure is simple, and the cost is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of polarization fixtures, and particularly relates to a polarization fixture for piezoelectric ceramics. Background Art

[0002] As a functional material that can convert mechanical properties and electrical properties into each other, piezoelectric ceramics are widely used in various fields such as communication, measurement, biology, and aerospace. Before being used, piezoelectric materials need to be polarized to keep their electric domains in the same direction and then experiments can be carried out.

[0003] For example, Patent CN202063841U discloses a fixture for polarizing piezoelectric ceramic sheets. An adjusting nut is installed below the upper support plate on the conductive column, and a spring is sleeved between the upper support plate and the adjusting nut on the conductive column; a conductive sheet adapted to the position of the conductive column is provided on the lower support plate. The spring is arranged between the upper support plate and the adjusting nut to adjust the pressure between the conductive column and the conductive sheet, so that ceramic sheets with different thicknesses can be polarized.

[0004] However, in this patent, the piezoelectric ceramic sheet is placed between the conductive column and the conductive sheet for polarization, which is not convenient for polarizing tubular piezoelectric ceramics. There is an urgent need to develop a polarization fixture for tubular piezoelectric ceramics. Summary of the Utility Model

[0005] In view of this, it is necessary to provide a polarization fixture for piezoelectric ceramics to solve the technical problem that the existing polarization fixture is not convenient for polarizing tubular piezoelectric ceramics, and there is an urgent need to develop a polarization fixture for tubular piezoelectric ceramics.

[0006] The utility model provides a polarization fixture for piezoelectric ceramics, which includes:

[0007] A seat body;

[0008] An electrode, including a connecting electrode, an electrode shaft, and an electrode needle. The connecting electrode is installed on the seat body, the electrode shaft is rotatably installed on the seat body, and one end of the electrode needle is connected to the electrode shaft; and

[0009] A driving part, installed on the seat body and drivingly connected to the electrode shaft, for driving the electrode shaft to rotate, so that when the electrode needle rotates following the electrode shaft, it can drive the workpiece sleeved on the electrode needle to press against or disengage from the connecting electrode.

[0010] Optionally, the seat body includes a bottom plate and a mounting table. The mounting table is installed on the bottom plate. The connecting electrode is arranged on the bottom plate and is on the same side of the bottom plate as the mounting table;

[0011] The electrode shaft is rotatably mounted on the mounting table and is connected with a turbine. The driving part includes a driving worm, and the driving worm is rotatably mounted on the mounting table and meshes with the turbine to drive the electrode shaft to rotate when rotating.

[0012] Optionally, the driving worm includes a driving shaft, a worm and a worm setscrew. The driving shaft is rotatably mounted on the mounting table and corresponds to the turbine. The worm is provided with a worm shaft hole for the driving shaft to pass through. The side wall of the worm shaft hole is provided with a worm screw hole communicating with the outer wall. The worm setscrew is screwed into the worm screw hole and presses against the worm.

[0013] Optionally, a limiting plane is provided on the side wall of the driving shaft, and one end of the worm setscrew extending into the worm shaft hole presses against the limiting plane.

[0014] Optionally, the driving part further includes a rotating handle and a handle setscrew. The rotating handle is provided with a handle shaft hole and a handle screw hole. The handle shaft hole is for the driving shaft to pass through. The handle screw hole communicates with the handle shaft hole. The handle setscrew is screwed into the handle screw hole and presses against the driving shaft.

[0015] Optionally, anti-slip grooves are arranged on the side wall of the rotating handle.

[0016] Optionally, the turbine is provided with a turbine shaft hole and a turbine screw hole. The electrode shaft is provided with a connecting shaft corresponding to the turbine shaft hole. The connecting shaft is arranged in the turbine shaft hole. The turbine screw hole communicates with the turbine shaft hole;

[0017] The driving part further includes a turbine setscrew. The turbine setscrew is screwed into the turbine screw hole and presses against the connecting shaft.

[0018] Optionally, the base body further includes a support table. The support table is mounted on the bottom plate and is on the same side of the bottom plate as the mounting table, and is provided with a support groove. A part of the electrode shaft is placed in the support groove.

[0019] Optionally, there are multiple electrode needles. The multiple electrode needles are arranged at intervals along the axial direction of the electrode shaft. The connecting electrodes are provided in multiple numbers corresponding to the electrode needles;

[0020] The support table is provided with multiple electrode grooves at intervals along the axial direction of the electrode shaft. One side of each electrode groove close to the bottom plate is open. The multiple connecting electrodes are respectively located in the multiple electrode grooves. The support groove extends along the axial direction of the electrode shaft and communicates with the multiple electrode grooves. Among them, the electrode needles can extend into the electrode grooves.

[0021] Optionally, the connecting electrode is a spring probe, and the electrode further includes an electrode plate which is embedded in the bottom plate and partially placed in a plurality of the electrode grooves, and each of the spring probes is electrically connected to the electrode plate.

[0022] Compared with the prior art, when using the piezoelectric ceramic polarization fixture provided by the present invention, first drive the electrode shaft to rotate through the driving part until the electrode needle deviates from the position of the connecting electrode, and then sleeved the round tube-like sample (round tube-like piezoelectric ceramic) on the electrode needle; then drive the electrode shaft to rotate through the driving part, and make the round tube-like sample on the electrode needle be able to press against the connecting electrode to form a connected circuit, and then introduce high voltage electricity as a medium to polarize the sample. In this way, the operator only needs to sleeve the round tube-like sample on the electrode needle and then correspondingly drive the electrode shaft to rotate, which is simple and convenient to operate, improves the polarization efficiency, is not easy to squeeze and damage the sample, ensures the sample quality, and at the same time has a simple structure and saves costs.

[0023] The above description is only an overview of the technical solution of the present invention. In order to be able to understand the technical means of the present invention more clearly and implement it in accordance with the content of the specification, the preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. The specific implementation manners of the present invention are given in detail by the following embodiments and their accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The drawings described herein are used to provide a further understanding of the present invention, and constitute a part of this application. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention. In the drawings:

[0025] Figure 1 is a schematic structural diagram of an embodiment when the piezoelectric ceramic polarization fixture provided by the present invention is placed with a round tube-like sample;

[0026] Figure 2 is Figure 1 a cross-sectional view of the piezoelectric ceramic polarization fixture in

[0027] Figure 3 is Figure 1 a schematic structural diagram of the driving part in

[0028] Figure 4 is Figure 3 an exploded view of the driving worm in

[0029] Figure 5 is Figure 1 a schematic structural diagram of the electrode shaft and the electrode needle in

[0030] Figure 6 is Figure 5 a partial cross-sectional view of the electrode shaft in

[0031] Figure 7 is Figure 1 a partial schematic view of the piezoelectric ceramic polarization fixture in

[0032] Figure 8 is Figure 1 a schematic structural view of the middle seat body and the connecting electrode.

[0033] Description of the reference numerals in the drawings:

[0034] 100, piezoelectric ceramic polarization fixture; 1, seat body; 11, bottom plate; 12, mounting table; 13, support table; 13a, support groove; 13b, electrode groove; 2, connecting electrode; 21, spring probe; 3, electrode shaft; 31, turbine; 32, connecting shaft; 4, electrode needle; 5, driving part; 51, driving worm; 52, driving shaft; 521, limiting plane; 53, worm; 53a, worm shaft hole; 53b, worm screw hole; 54, worm set screw; 55, rotating handle; 55a, handle screw hole; 551, handle set screw; 56, turbine set screw; 6, electrode plate; 200, tubular sample. Detailed implementation manners

[0035] Next, the preferred embodiments of the present invention will be specifically described with reference to the accompanying drawings. The accompanying drawings form a part of this application and are used together with the embodiments of the present invention to explain the principle of the present invention, rather than to limit the scope of the present invention.

[0036] Please refer to Figures 1 to 8 , this piezoelectric ceramic polarization fixture 100 includes a seat body 1, an electrode and a driving part 5; the electrode includes a connecting electrode 2, an electrode shaft 3 and an electrode needle 4. The connecting electrode 2 is installed on the seat body 1, the electrode shaft 3 is rotatably installed on the seat body 1, and one end of the electrode needle 4 is connected to the electrode shaft 3; the driving part 5 is installed on the seat body 1 and is drivingly connected to the electrode shaft 3 to drive the electrode shaft 3 to rotate, so that when the electrode needle 4 rotates following the electrode shaft 3, the workpiece sleeved on the electrode needle 4 can be driven to press against or separate from the connecting electrode 2. It should be noted that the electrode needle 4 can be in electrical contact with the connecting electrode 2 when rotating following the electrode shaft 3.

[0037] When using the piezoelectric ceramic polarization fixture 100 provided by the present utility model, first drive the electrode shaft 3 to rotate through the driving part 5 until the electrode needle 4 deviates from the position of the connecting electrode 2, and then sleeved the tubular sample 200 (tubular piezoelectric ceramic) on the electrode needle 4; then drive the electrode shaft 3 to rotate through the driving part 5, and make the tubular sample 200 on the electrode needle 4 press against the connecting electrode 2 to form a connected loop, and then introduce high-voltage electricity as a medium to polarize the sample. In this way, the operator only needs to sleeve the tubular sample 200 on the electrode needle 4 and then correspondingly drive the electrode shaft 3 to rotate, which is simple and convenient to operate, improves the polarization efficiency, is not easy to squeeze and damage the sample, ensures the sample quality, and at the same time has a simple structure and saves costs.

[0038] It should be noted that in other embodiments, the driving part 5 can be a rotary motor installed on the seat body 1, or can be realized by gear meshing transmission to drive the rotation of the electrode shaft 3. In this embodiment, please refer to Figure 2 and Figure 3 , the seat body 1 includes a bottom plate 11 and a mounting table 12, the mounting table 12 is installed on the bottom plate 11, the connecting electrode 2 is arranged on the bottom plate 11 and is on the same side of the bottom plate 11 as the mounting table 12; the electrode shaft 3 is rotatably installed on the mounting table 12 and is connected with a turbine 31, the driving part 5 includes a driving worm 51, the driving worm 51 is rotatably installed on the mounting table 12 and meshes with the turbine 31 to drive the electrode shaft 3 to rotate when rotating. In this embodiment, the electrode shaft 3 is driven to rotate by rotating the driving worm 51, so that the electrode shaft 3 can rotate stably. It should be noted that in this solution, bearing seats are respectively arranged between the two ends of the electrode shaft 3 and the seat body 1.

[0039] Furthermore, please refer to Figure 4 , the driving worm 51 includes a driving shaft 52, a worm 53 and a worm setscrew 54, the driving shaft 52 is rotatably installed on the mounting table 12 and corresponds to the turbine 31, the worm 53 is provided with a worm shaft hole 53a for the driving shaft 52 to pass through, and a worm screw hole 53b communicating with the outer wall is arranged on the side wall of the worm shaft hole 53a, and the worm setscrew 54 is screwed into the worm screw hole 53b and presses against the worm 53. In this way, the worm 53 can be repaired and replaced by loosening and tightening the worm setscrew 54, ensuring that the worm 53 and the turbine 31 can be smoothly driven. Specifically, a limiting plane 521 is arranged on the side wall of the driving shaft 52, and one end of the worm setscrew 54 extending into the worm shaft hole 53a presses against the limiting plane 521. In this solution, the worm setscrew 54 presses against the limiting plane 521 to further limit the relative rotation of the worm 53 with respect to the driving shaft 52 and improve the transmission efficiency of the worm 53.

[0040] Further, the driving part 5 further includes a rotating handle 55 and a handle set screw 551. The rotating handle 55 is provided with a handle shaft hole and a handle screw hole 55a. The handle shaft hole is for the driving shaft 52 to pass through. The handle screw hole 55a communicates with the handle shaft hole. The handle set screw 551 is screwed into the handle screw hole 55a and presses against the driving shaft 52. In this embodiment, a rotating handle 55 detachably connected to the driving shaft 52 is further provided, so as to facilitate the operator to rotate the worm 53, improve convenience, and at the same time not affect the maintenance and replacement of the worm 53. Further, anti-slip grooves are arranged on the side wall of the rotating handle 55 to prevent slipping during the process of rotating the rotating handle 55.

[0041] Similarly, please refer to Figure 5 and Figure 6 , the turbine 31 is provided with a turbine 31 shaft hole and a turbine 31 screw hole. The electrode shaft 3 is provided with a connecting shaft 32 corresponding to the turbine 31 shaft hole. The connecting shaft 32 passes through the turbine 31 shaft hole. The turbine 31 screw hole communicates with the turbine 31 shaft hole; the driving part 5 further includes a turbine set screw 56. The turbine set screw 56 is screwed into the turbine 31 screw hole and presses against the connecting shaft 32. In this embodiment, the turbine 31 is fixed on the connecting shaft 32 of the electrode shaft 3 through the turbine set screw 56, so as to facilitate the operator to repair and replace the turbine 31.

[0042] Further, please refer to Figure 7 and Figure 8 , the base body 1 further includes a support platform 13. The support platform 13 is installed on the bottom plate 11, is on the same side of the bottom plate 11 as the installation platform 12, and is provided with a support groove 13a. A part of the electrode shaft 3 is placed in the support groove 13a. In this solution, a support groove 13a is provided on the support platform 13 corresponding to the electrode shaft 3, so that a part of the electrode shaft 3 falls into the support groove 13a, enabling the electrode shaft 3 to rotate stably, avoiding deviation between the electrode needle 4 and the connecting electrode 2, and ensuring the formation of an effective connection circuit.

[0043] Further, a plurality of electrode needles 4 are provided. The plurality of electrode needles 4 are arranged at intervals along the axial direction of the electrode shaft 3. A plurality of connecting electrodes 2 are provided corresponding to the electrode needles 4; a plurality of electrode grooves 13b are arranged at intervals along the axial direction of the electrode shaft 3 on the support platform 13. One side of each electrode groove 13b close to the bottom plate 11 is open. The plurality of connecting electrodes 2 are respectively located in the plurality of electrode grooves 13b. The support groove 13a extends along the axial direction of the electrode shaft 3 and communicates with the plurality of electrode grooves 13b. Among them, the electrode needle 4 can extend into the electrode groove 13b. In this embodiment, a plurality of electrode needles 4 and connecting electrodes 2 are correspondingly arranged to be able to polarize a plurality of samples simultaneously, further improving the polarization efficiency.

[0044] Further, the connecting electrode 2 is a spring probe 21. The electrode further includes an electrode plate 6 which is embedded in the bottom plate 11 and partially placed in a plurality of electrode grooves 13b, and each spring probe 21 is electrically connected to the electrode plate 6. In this embodiment, the electrode plate 6 is used to electrically connect a plurality of spring probes 21 simultaneously, which saves costs and makes the structure relatively compact. It should be noted that in this embodiment, there are two sets of electrodes and the driving part 5, and the two sets of electrodes and the driving part 5 are arranged on the seat body 1 at intervals. In addition, a copper grounding block is also provided at the bottom of the seat body 1.

[0045] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention.

Claims

1. A piezoelectric ceramic polarization fixture, characterized in that: It includes: seat body; The electrode comprises a connecting electrode, an electrode shaft and an electrode needle, wherein the connecting electrode is mounted on the base, the electrode shaft is rotatably mounted on the base, and one end of the electrode needle is connected to the electrode shaft; and The driving part is installed on the seat body and is drivingly connected to the electrode shaft to drive the electrode shaft to rotate, so that when the electrode needle rotates with the electrode shaft, it can drive the workpiece sleeved on the electrode needle to press against or separate from the connecting electrode.

2. The piezoelectric ceramic polarization fixture according to claim 1, characterized in that: The base body includes a bottom plate and a mounting platform, the mounting platform is mounted on the bottom plate, the connecting electrode is arranged on the bottom plate, and is located on the same side of the bottom plate as the mounting platform; The electrode shaft is rotatably mounted on the mounting platform and is connected to a turbine. The driving unit includes a driving worm, which is rotatably mounted on the mounting platform and meshes with the turbine to drive the electrode shaft to rotate when rotating.

3. The piezoelectric ceramic polarization fixture according to claim 2, characterized in that: The driving worm includes a driving shaft, a worm and a worm top screw. The driving shaft is rotatably mounted on the mounting platform and corresponds to the turbine. The worm is provided with a worm shaft hole for the driving shaft to pass through. The side wall of the worm shaft hole is provided with a worm screw hole connected to the outer wall. The worm top screw is screwed into the worm screw hole and pressed against the worm.

4. The piezoelectric ceramic polarization fixture according to claim 3, characterized in that: A limiting plane is provided on the side wall of the driving shaft, and one end of the worm screw extending into the worm shaft hole is pressed against the limiting plane.

5. The piezoelectric ceramic polarization fixture according to claim 3, characterized in that: The driving part also includes a rotating handle and a handle top screw. The rotating handle is provided with a handle shaft hole and a handle screw hole. The handle shaft hole is for the driving shaft to pass through. The handle screw hole is connected to the handle shaft hole. The handle top screw is screwed in the handle screw hole and pressed against the driving shaft.

6. The piezoelectric ceramic polarization fixture according to claim 5, characterized in that: The side wall of the rotating handle is provided with an anti-slip groove.

7. The piezoelectric ceramic polarization fixture according to claim 2, characterized in that: The turbine is provided with a turbine shaft hole and a turbine screw hole, the electrode shaft is provided with a connecting shaft corresponding to the turbine shaft hole, the connecting shaft is passed through the turbine shaft hole, and the turbine screw hole is connected to the turbine shaft hole; The driving part also includes a turbine top screw, which is screwed into the turbine screw hole and pressed against the connecting shaft.

8. The piezoelectric ceramic polarization fixture according to claim 2, characterized in that: The seat body also includes a support platform, which is installed on the bottom plate and is located on the same side of the bottom plate as the mounting platform, and is provided with a support groove, in which the electrode shaft portion is placed.

9. The piezoelectric ceramic polarization fixture according to claim 8, characterized in that: There are a plurality of electrode needles, which are spaced apart along the axial direction of the electrode axis, and a plurality of connecting electrodes are provided corresponding to the electrode needles; The support platform is provided with a plurality of electrode grooves at intervals along the axial direction of the electrode axis, each of the electrode grooves is open on one side close to the bottom plate, a plurality of connecting electrodes are respectively located in the plurality of electrode grooves, the support groove extends along the axial direction of the electrode axis and connects the plurality of electrode grooves, wherein the electrode needle can extend into the electrode groove.

10. The piezoelectric ceramic polarization fixture according to claim 9, characterized in that: The connecting electrode is a spring probe, and the electrode further comprises an electrode plate, which is embedded in the bottom plate and partially disposed in a plurality of the electrode grooves, and each of the spring probes is electrically connected to the electrode plate.

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