Flexible clamping polarization device

Abstract

The utility model relates to a polarization device with flexible clamping. The polarization device comprises a rack, a heating seat and a polarization clamping assembly, the heating seat is mounted on the rack and is used for heating a workpiece; the polarization clamping assembly comprises an electrode arm and an elastic piece, the electrode arm is movably installed on the rack and provided with an output electrode, the output electrode can be close to the heating base and abut against the workpiece in the moving stroke of the electrode arm so that the workpiece can be fixed to the heating base, and the elastic piece is connected to the electrode arm and the rack and used for driving the output electrode to elastically abut against the workpiece in a pressing mode. According to the scheme, stable polarization of the piezoelectric ceramic can be ensured; meanwhile, the output electrode can elastically abut against the piezoelectric ceramic under the elastic driving of the elastic piece, the elastic piece provides pulling force and buffering elastic force, flexible contact is achieved, the buffering and damping effects are effectively achieved, brittle rupture of the piezoelectric ceramic is avoided, and polarization effectiveness is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of polarization tooling, in particular to a polarization device with flexible clamping. Background Art

[0002] As a functional material that can convert mechanical properties and electrical properties with each other, piezoelectric ceramics are widely used in various fields such as communication, measurement, biology, and aerospace. Piezoelectric ceramics must be polarized to have piezoelectric effect, that is, a strong DC electric field is applied to the piezoelectric ceramics to make the electric domains in the ceramics align along the direction of the electric field, also known as artificial polarization treatment.

[0003] For example, Patent CN207250566U discloses an air polarization tooling for piezoelectric ceramic sheets. The piezoelectric ceramic sheet to be polarized is inserted into the installation gap between adjacent conductive rods, so that one side of the piezoelectric ceramic sheet abuts against one of the conductive rods. Then, the utility model is placed in an oven, and the positive and negative wires of the polarization device are respectively connected to the first conductive layer and the second conductive layer. Next, the temperature of the oven is adjusted to about 200 °C, and after keeping warm for 5 minutes, the power supply of the polarization device is turned on. The voltage of the polarization device is applied to both ends of the conductive rod. After maintaining for 10 minutes, the power supply of the oven is turned off, and the oven door is opened. When the temperature drops to about 90 °C, the power supply of the polarization device is turned off, and the utility model is taken out, and the polarization is completed.

[0004] However, there is a certain thickness change in the piezoelectric ceramic sheet during the heating and polarization process. Since the size of the installation gap between the conductive rods is fixed, the thin and brittle piezoelectric ceramic sheet is prone to brittle fracture during the polarization process, making it difficult to ensure the effectiveness of polarization. Summary of the Utility Model

[0005] In view of this, it is necessary to provide a polarization device with flexible clamping to solve the technical problem that in the prior art, the fixed size of the installation gap between the conductive rods causes the thin and brittle piezoelectric ceramic sheet to be prone to brittle fracture during the polarization process, making it difficult to ensure the effectiveness of polarization.

[0006] The utility model provides a polarization device with flexible clamping, which includes:

[0007] A frame;

[0008] A heating seat, installed on the frame for heating the workpiece; and

[0009] A polarization clamping assembly, including an electrode arm and an elastic member. The electrode arm is movably installed on the frame and is provided with an output electrode. The output electrode can approach the heating seat and press against the workpiece during the moving stroke of the electrode arm to fix the workpiece on the heating seat. The elastic member is connected between the electrode arm and the frame to drive the output electrode to elastically press against the workpiece.

[0010] Optionally, the rack is provided with a guiding groove in the vertical direction and a limiting portion.

[0011] The electrode arm is provided with a guiding bearing corresponding to the guiding groove and a cooperating portion corresponding to the limiting portion. The guiding bearing is slidably disposed in the guiding groove, and the limiting portion cooperates with the cooperating portion to limit the rotation of the electrode arm. The elastic member is used to drive the electrode arm to elastically move in the vertical direction.

[0012] Optionally, there are a plurality of guiding grooves, and the plurality of guiding grooves are arranged at intervals. Correspondingly, there are a plurality of guiding bearings, and each guiding bearing is disposed through the corresponding guiding groove.

[0013] Wherein, one of the plurality of guiding grooves constitutes the limiting portion, and correspondingly, one of the plurality of guiding bearings constitutes the cooperating portion.

[0014] Optionally, an avoidance groove is extended in a direction away from the heating base at the upper end of the guiding groove. The elastic member is a tension spring, one end of the tension spring is connected to the electrode arm, and the other end is connected to the rack and is located on a side of the guiding groove away from the heating base.

[0015] Optionally, a limiting groove is extended downward at one end of the avoidance groove away from the guiding groove.

[0016] Optionally, the rack includes a seat body and a plurality of mounting seats. The plurality of mounting seats are sequentially and spacedly mounted on the seat body, and a mounting gap is formed between two adjacent mounting seats. Each mounting seat is provided with the guiding groove. The heating base is mounted on the seat body and is located on the same side of the plurality of mounting seats.

[0017] There are a plurality of the electrode arms and the elastic members respectively. The plurality of electrode arms are respectively placed in the plurality of mounting gaps, and each elastic member is connected to the corresponding electrode arm and the mounting seat.

[0018] Optionally, the heating base is recessed with a heating groove with an upward opening, and the heating groove is used for placing a workpiece.

[0019] Optionally, the polarization device with flexible clamping further includes a housing. The housing covers the outside of the rack and is provided with a transparent area corresponding to the heating base.

[0020] Optionally, the housing is provided with a heat dissipation port communicating with the outside corresponding to the electrode arm. The polarization device with flexible clamping further includes a heat dissipation fan, and the heat dissipation fan is mounted on the heat dissipation port.

[0021] Optionally, the output electrode is provided with an elastic probe.

[0022] Compared with the prior art, in the polarization device with flexible clamping provided by the present utility model, an external force is first applied to drive the output electrode of the electrode arm to move away from the heating base, and then the workpiece (piezoelectric ceramic) is placed on the heating base. The output motor of the electrode arm can approach and press against the piezoelectric ceramic under the elastic driving of the elastic member, so as to fix the piezoelectric ceramic on the heating base and ensure stable polarization of the piezoelectric ceramic. At the same time, the output electrode can elastically press against the piezoelectric ceramic under the elastic driving of the elastic member, and the elastic member provides tensile force and buffer elastic force to achieve flexible contact, effectively playing a role in buffering and shock absorption, avoiding brittle fracture of the piezoelectric ceramic, and ensuring the effectiveness of polarization.

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

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

[0025] Figure 1 is a schematic structural diagram of an embodiment of the polarization device with flexible clamping provided by the present utility model;

[0026] Figure 2 is Figure 1 the internal structural diagram of the polarization device with flexible clamping in;

[0027] Figure 3 is Figure 2 the structural diagram of the mounting base, heating base and electrode arm in;

[0028] Figure 4 is Figure 3 the structural diagram of the mounting base, electrode arm and elastic member in;

[0029] Figure 5 is Figure 4 the structural diagram of the mounting base in;

[0030] Figure 6 is Figure 4 the structural diagram of the electrode arm in.

[0031] Description of the Reference Numerals:

[0032] 100. Polarization device with flexible clamping; 1. Frame; 11. Base body; 12. Mounting seat; 12a. Guide groove; 12b. Avoidance groove; 12c. Limit groove; 2. Heating seat; 2a. Heating groove; 3. Electrode arm; 31. Output electrode; 32. Elastic probe; 33. Guide bearing; 34. Arm body; 35. Working boss; 36. Extension arm; 4. Elastic member; 5. Outer shell; 51. Transparent area; 6. Cooling fan; 7. High-voltage output module; 8. Electrical control module; 9. Control interaction module. Detailed implementation manner

[0033] The following will specifically describe the preferred embodiments of the present invention 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.

[0034] Please refer to Figures 1 to 6 , this polarization device 100 with flexible clamping includes a frame 1, a heating seat 2 and a polarization clamping assembly; the heating seat 2 is installed on the frame 1 for heating the workpiece; the polarization clamping assembly includes an electrode arm 3 and an elastic member 4. The electrode arm 3 is movably installed on the frame 1 and is provided with an output electrode 31. The output electrode 31 can approach the heating seat 2 and press against the workpiece during the moving stroke of the electrode arm 3 to fix the workpiece on the heating seat 2. The elastic member 4 is connected between the electrode arm 3 and the frame 1 for driving the output electrode 31 to elastically press against the workpiece.

[0035] In the polarization device 100 with flexible clamping provided by the present invention, an external force is first applied to drive the output electrode 31 of the electrode arm 3 to move away from the heating seat 2, and then the workpiece (piezoelectric ceramic) is placed on the heating seat 2. The output electrode of the electrode arm 3 can approach and press against the piezoelectric ceramic under the elastic drive of the elastic member 4 to fix the piezoelectric ceramic on the heating seat 2 and ensure stable polarization of the piezoelectric ceramic; at the same time, the output electrode 31 can elastically press against the piezoelectric ceramic under the elastic drive of the elastic member 4. The elastic member 4 provides tensile force and buffer elastic force to achieve flexible contact, effectively playing a role in buffering and shock absorption, avoiding brittle fracture of the piezoelectric ceramic, and ensuring the effectiveness of polarization.

[0036] Further, please refer to Figures 3 to 5 , the frame 1 is provided with a guide groove 12a in the vertical direction and a limiting portion; the electrode arm 3 is provided with a guide bearing 33 corresponding to the guide groove 12a and a matching portion corresponding to the limiting portion. The guide bearing 33 is slidably arranged in the guide groove 12a, and the limiting portion and the matching portion cooperate to limit the rotation of the electrode arm 3. The elastic member 4 is used to drive the electrode arm 3 to elastically move in the vertical direction. In this embodiment, the electrode arm 3 can move in the vertical direction under the cooperation of the guide bearing 33 and the guide groove 12a, which is convenient for taking and placing the piezoelectric ceramic, and the structure is simple and reliable; at the same time, the rotation of the output electrode around the guide bearing 33 is avoided under the cooperation of the limiting portion and the matching portion.

[0037] Further, please refer to Figure 5 , a plurality of guiding grooves 12a are provided, and the plurality of guiding grooves 12a are arranged at intervals. Correspondingly, a plurality of guiding bearings 33 are provided, and each guiding bearing 33 is inserted into a corresponding guiding groove 12a. Among them, one of the plurality of guiding grooves 12a constitutes a limiting portion, and correspondingly, one of the plurality of guiding bearings 33 constitutes a mating portion. In this solution, by providing a plurality of guiding grooves 12a and guiding bearings 33, the output electrode 31 can be prevented from rotating around the guiding bearing 33, and at the same time, a smooth guiding effect can be achieved.

[0038] Furthermore, an avoidance groove 12b is provided at the upper end of the guiding groove 12a and extends in a direction away from the heating base 2. The elastic member 4 is a tension spring. One end of the tension spring is connected to the electrode arm 3, and the other end is connected to the frame 1 and is located on the side of the guiding groove 12a away from the heating base 2. In this embodiment, when the polarization is completed, the guiding bearing 33 can be slid into the avoidance groove 12b, and the electrode arm 3 can be placed in the avoidance groove 12b under the action of the tension spring, so that there is a placement gap between the output electrode 31 and the heating base 2, facilitating the picking and placing of the piezoelectric ceramic. In addition, the output electrode 31 is further provided with an elastic probe 32, and the elastic probe 32 elastically contacts the piezoelectric ceramic, providing a certain degree of elastic freedom and further improving the practicability.

[0039] Furthermore, a limiting groove 12c is provided at the end of the avoidance groove 12b away from the guiding groove 12a and extends downward. In this way, when the guiding bearing 33 slides into the limiting groove 12c, it can be stably placed in the limiting groove 12c under the action of the pull rope spring, preventing the output electrode 31 from accidentally resetting into the guiding groove 12a, thereby further improving the convenience of picking and placing the piezoelectric ceramic.

[0040] Furthermore, the frame 1 includes a seat body 11 and a plurality of mounting seats 12. The plurality of mounting seats 12 are sequentially and spacedly mounted on the seat body 11, and an installation gap is formed between two adjacent mounting seats 12. Each mounting seat 12 is provided with a guiding groove 12a. The heating base 2 is mounted on the seat body 11 and is located on the same side of the plurality of mounting seats 12. A plurality of electrode arms 3 and elastic members 4 are respectively provided. The plurality of electrode arms 3 are respectively placed in the plurality of installation gaps, and each elastic member 4 is connected to the corresponding electrode arm 3 and mounting seat 12. In this embodiment, by providing a plurality of electrode arms 3, a plurality of piezoelectric ceramics can be polarized simultaneously, improving the polarization efficiency and having a compact structure. Specifically, guiding bearings 33 are respectively provided on opposite sides of each electrode arm 3, and the two guiding bearings 33 on both sides are respectively slidably arranged in the guiding grooves 12a of two adjacent mounting seats 12, improving the stability of the movement of the electrode arm 3.

[0041] Further, the heating base 2 is recessed with a heating groove 2a with an upward opening, and the heating groove 2a is used to place the workpiece. In this embodiment, the piezoelectric ceramic is placed in the heating groove 2a, and the piezoelectric ceramic is pressed against the bottom of the heating groove 2a through the output electrode 31. Specifically, please refer to Figure 6 , the electrode arm 3 includes an arm body 34, a working boss 35 and an extension arm 36. The working boss 35 is installed at one end of the arm body 34 corresponding to the heating groove 2a. One end of the extension arm 36 is connected to the arm body 34, and the other end corresponds to the guiding groove 12a at the bottom of the mounting base 12, and a guiding bearing 33 is provided thereon. Among them, the output electrode 31 is installed on the working boss 35. It should be noted that the heating method of the heating base 2 is not limited, as long as the piezoelectric ceramic can be heated to the preset temperature without affecting the normal operation of the output electrode 31. In one embodiment, the heating base 2 is heated by a resistance wire.

[0042] Further, the polarization device 100 with flexible clamping further includes a housing 5. The housing 5 covers the outside of the frame 1 and is provided with a transparent area 51 corresponding to the heating base 2. In this way, it is possible to avoid interference of external foreign objects with the polarization of the piezoelectric ceramic and further improve the effectiveness of polarization; at the same time, it is convenient for the operator to observe the polarization of the piezoelectric ceramic through the transparent area 51, improving the practicability.

[0043] Furthermore, the housing 5 is provided with a heat dissipation port communicating with the outside corresponding to the electrode arm 3. The polarization device 100 with flexible clamping further includes a heat dissipation fan 6, and the heat dissipation fan 6 is installed at the heat dissipation port. In this way, the heat dissipation efficiency inside the housing 5 can be improved, ensuring the smooth operation of the device.

[0044] It should be noted that in this embodiment, the polarization device 100 with flexible clamping further includes a high-voltage output module 7, an electrical control module 8 and a control interaction module 9. Among them, the high-voltage output module 7 includes a high-voltage power supply, a safety protection switch, and a high-voltage source power supply module, and it is provided with a high-voltage output port, a control port and a power supply port; the electrical control module 8 has the functions of output voltage control, feedback voltage acquisition, loop current acquisition, temperature control and safety self-locking control; the control interaction module 9 includes a voltage output and feedback control program, a temperature control part and a process parameter setting part. This is the prior art and will not be elaborated here.

[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 thought of by those skilled in the art within the technical scope disclosed by the present invention should be covered by the protection scope of the present invention.

Claims

1. A flexible clamping polarization device, characterized in that: It includes: frame; A heating seat, mounted on the frame, for heating the workpiece; as well as A polarization clamping assembly includes an electrode arm and an elastic member. The electrode arm is movably mounted on the frame and is provided with an output electrode. The output electrode can approach the heating seat and press against the workpiece during the movable stroke of the electrode arm to fix the workpiece on the heating seat. The elastic member is connected to the electrode arm and the frame to drive the output electrode to elastically press against the workpiece.

2. The flexible clamping polarization device according to claim 1, characterized in that: The frame is provided with a guide groove along the vertical direction and a limiting portion; The electrode arm is provided with a guide bearing corresponding to the guide groove, and a matching portion is provided corresponding to the limiting portion. The guide bearing is slidably arranged in the guide groove. The limiting portion cooperates with the matching portion to limit the rotation of the electrode arm. The elastic member is used to drive the electrode arm to elastically move in the vertical direction.

3. The flexible clamping polarization device according to claim 2, characterized in that: There are a plurality of guide grooves, which are arranged at intervals. Correspondingly, there are a plurality of guide bearings, each of which is inserted into the corresponding guide groove. Among them, one of the multiple guide grooves constitutes the limiting portion, and correspondingly, one of the multiple guide bearings constitutes the matching portion.

4. The flexible clamping polarization device according to claim 2, characterized in that: The upper end of the guide groove is provided with an avoidance groove extending in a direction away from the heating seat. The elastic member is a tension spring, one end of which is connected to the electrode arm, and the other end is connected to the frame and is located on a side of the guide groove away from the heating seat.

5. The flexibly clamped polarization device according to claim 4, characterized in that: One end of the avoidance groove away from the guide groove extends downward to be provided with a limiting groove.

6. The flexible clamping polarization device according to claim 2, characterized in that: The frame comprises a seat body and a plurality of mounting seats, wherein the plurality of mounting seats are sequentially installed on the seat body at intervals, and an installation gap is formed between two adjacent mounting seats, each mounting seat is provided with the guide groove, and the heating seat is installed on the seat body and is located on the same side of the plurality of mounting seats; The electrode arms and the elastic members are provided in plurality, respectively. The electrode arms are respectively placed in the installation gaps, and each elastic member is connected to the corresponding electrode arm and the installation seat.

7. The flexible clamping polarization device according to claim 1, characterized in that: The heating seat is concavely provided with a heating groove with an opening facing upwards, and the heating groove is used for placing a workpiece.

8. The flexible clamping polarization device according to claim 1, characterized in that: The flexible clamping polarization device also includes a shell, which is covered outside the frame and has a transparent area corresponding to the heating seat.

9. The flexibly clamped polarization device according to claim 8, characterized in that: The shell is provided with a heat dissipation port connected to the outside corresponding to the electrode arm, and the flexible clamping polarization device also includes a heat dissipation fan, which is installed on the heat dissipation port.

10. The flexible clamping polarization device according to claim 1, characterized in that: The output electrode is provided with an elastic probe.

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