Circular piezoelectric ceramic piece polarization device

Abstract

The utility model discloses a circular piezoelectric ceramic piece polarization device, which relates to the technical field of piezoelectric ceramic pieces, solves the problems of low electrical property stability and poor consistency of the ceramic pieces polarized by the existing device, and adopts the following scheme: a convex column is fixedly arranged on the top surface of a bottom plate. Through the arrangement of the convex columns, the positioning holes A and the groove holes, the groove plates are accurately installed on the bottom plate through the positioning holes A and the positioning pins, then the ceramic chips are installed in the groove holes, the ceramic chips are conveniently placed and prevented from being cracked and damaged, the stability of the electrical performance of the ceramic chips is improved, and meanwhile through the arrangement of the positioning holes C, the metal wafers and the copper columns, the service life of the ceramic chips is prolonged. The circuit board can be accurately installed on the bottom plate through the positioning holes C and the positioning pins, the metal wafers make contact with the ceramic chips, the positive pole and the negative pole are connected with the positive pole and the negative pole of a power source respectively, the distances and the heights of the ceramic chips in each group are consistent, and therefore the consistency of the electrical performance of the produced ceramic chips is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of piezoelectric ceramic pieces, in particular to a circular piezoelectric ceramic piece polarization device. Background Art

[0002] Circular piezoelectric ceramic sheets are the core components of piezoelectric buzzers, piezoelectric sensors, and ultrasonic transducers. The polarization of piezoelectric ceramic sheets directly affects the consistency and excellence of the electrical properties of the ceramic sheets.

[0003] At present, the most common method of polarizing piezoelectric ceramic sheets is stacking polarization, and some companies in the industry use screening to perform stacking polarization. Although this method has good stacking height consistency, it is easy to cause cracks in thin ceramic sheets or scratches on the silver layer during the screening process; some companies even place the sheets directly without controlling the stacking height. Although this method is not prone to cracks and scratches on the silver layer, the stacking height consistency is poor, and the electrical performance stability and consistency of the ceramic sheets after polarization are poor; some companies place circular ceramic sheets in a groove and measure circular ceramic sheets of a certain height by comparing with the scale lines. This method has large visual errors, poor stacking height consistency, and extremely low efficiency.

[0004] Therefore, we propose a polarization device for circular piezoelectric ceramic pieces. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the utility model provides a circular piezoelectric ceramic piece polarization device, which solves the problems of low stability and poor consistency of the electrical performance of the ceramic piece after polarization in the existing device.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: A circular piezoelectric ceramic polarization device comprises a bottom plate, the top surface of which is equipped with a slot plate and a circuit board of matching specifications;

[0007] The top surface of the bottom plate is fixedly mounted with evenly distributed bosses, and the top surface of the bottom plate is provided with four groups of positioning holes A in opposite positions, and the positioning holes A are equipped with positioning pins of matching specifications. The top surface of the slot plate is provided with evenly distributed slots opposite to the bosses, and the top surface of the slot plate is provided with four groups of positioning holes B in opposite positions, and ceramic pieces of matching specifications are equipped in the slots.

[0008] Four groups of positioning holes C are provided on the top surface of the circuit board in opposite positions. The top surface of the circuit board is equipped with evenly distributed copper pillars. The bottom surface of the circuit board is fixedly installed with evenly distributed springs connected to the copper pillars. The bottom surface of the spring is fixedly installed with a metal disc of matching specifications. The top surface of the circuit board is fixedly installed with positive and negative poles in opposite positions.

[0009] Preferably, the diameter of the protrusion is smaller than the diameter of the slot hole, and the diameter is smaller in the range of 1 mm to 6 mm, so as to prevent the thin ceramic sheet from falling through the gap between the contact surface of the bottom plate and the slot plate.

[0010] Preferably, the base plate is made of stainless steel or aluminum plate with a thickness of 2 mm to 4 mm, which can improve the conductivity.

[0011] Preferably, the upper surface of the circuit board is formed by resistors with the same resistance value connected in parallel, the copper column is connected to the resistor, and the spring and the metal disc are made of copper material, which can make them have good conductivity.

[0012] Preferably, two groups of locking holes A are provided on the top surface of the base plate, and notches A connected to the locking holes A are respectively provided on the left and right sides of the base plate. Two groups of locking holes B are provided on the top surface of the circuit board, and notches B connected to the locking holes B are respectively provided on the left and right sides of the circuit board. The locking holes A are equipped with threaded rods of matching specifications, and the outer walls of the threaded rods are equipped with two groups of locking nuts A and locking nuts B of matching specifications and relative positions. In this way, the base plate and the circuit board can be limited and fixed to prevent the ceramic piece from tilting and ensure the overall stability of the device.

[0013] Preferably, a fastening nut with matching specifications is mounted on the outer wall of the copper column, so that the copper column can be locked.

[0014] 1. A circular piezoelectric ceramic polarization device, through the setting of the boss, positioning hole A and slot hole, the positioning hole A and the positioning pin accurately install the slot plate on the base plate, and then install the ceramic piece into the slot hole. The ceramic piece is precisely in contact with the boss, which facilitates the placement of the ceramic piece, prevents the ceramic piece from cracking and damage, and improves the stability of the electrical performance of the ceramic piece.

[0015] 2. At the same time, through the setting of positioning holes C, metal discs and copper columns, after the slot plate is removed from the base plate, the positioning holes C and positioning pins can accurately install the circuit board on the base plate. The metal disc is in contact with the ceramic sheet, and the positive column and negative column are respectively connected to the positive and negative poles of the power supply. The distance and height between each group of ceramic sheets are consistent, thereby improving the consistency of the electrical performance of the ceramic sheets after production and improving the production effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the bottom plate of the utility model;

[0018] Figure 3 This is a schematic structural diagram of the trough plate of the utility model;

[0019] Figure 4 This is a schematic diagram of the structure of the circuit board of the utility model;

[0020] Figure 5 This is a schematic diagram of the structure of the metal disc of the utility model;

[0021] Figure 6 This is a structural diagram of the threaded rod of the utility model.

[0022] In the figure: 1. Base plate; 2. Slot plate; 3. Circuit board; 4. Positioning hole A; 5. Positioning pin; 6. Boss; 7. Positioning hole B; 8. Slot hole; 9. Positioning hole C; 10. Copper column; 11. Fastening nut; 12. Spring; 13. Metal disc; 14. Locking hole A; 15. Notch A; 16. Locking hole B; 17. Notch B; 18. Threaded rod; 19. Locking nut A; 20. Locking nut B; 21. Positive pole; 22. Negative pole. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention. Example

[0024] like Figure 1-6 As shown: the top surface of the base plate 1 is fixedly installed with evenly distributed bosses 6, the top surface of the base plate 1 is provided with four groups of positioning holes A4 with relative positions, and the positioning holes A4 are equipped with positioning pins 5 with corresponding specifications, the top surface of the slot plate 2 is provided with evenly distributed slots 8 with relative positions to the bosses 6, the top surface of the slot plate 2 is provided with four groups of positioning holes B7 with relative positions, and the slot holes 8 are equipped with ceramic pieces with corresponding specifications. Through the setting of the bosses 6, positioning holes A4 and slot holes 8, the positioning holes A4 and positioning pins 5 accurately install the slot plate 2 on the base plate 1, and then install the ceramic piece into the slot hole 8. The ceramic piece is precisely in contact with the boss 6, which facilitates the placement of the ceramic piece, prevents the ceramic piece from cracking and damage, and improves the stability of the electrical properties of the ceramic piece. Example

[0025] like Figure 2-6As shown: four groups of positioning holes C9 with relative positions are provided on the top surface of the circuit board 3, and the top surface of the circuit board 3 is equipped with evenly distributed copper pillars 10. The bottom surface of the circuit board 3 is fixedly installed with springs 12 that are evenly distributed and connected to the copper pillars 10. The bottom surface of the spring 12 is fixedly installed with metal discs 13 of matching specifications. The top surface of the circuit board 3 is fixedly installed with positive poles 21 and negative poles 22 with relative positions. Through the setting of the positioning holes C9, metal discs 13 and copper pillars 10, after the slot plate 2 is removed from the base plate 1, the positioning holes C9 and the positioning pins 5 can accurately install the circuit board 3 on the base plate 1. The metal disc 13 is in contact with the ceramic sheet, and the positive pole 21 and the negative pole 22 are respectively connected to the positive and negative poles of the power supply. The distance between each group of ceramic sheets is consistent and the height is consistent, thereby improving the consistency of the electrical performance of the ceramic sheets after production and improving the production effect. Example

[0026] like Figure 2-3 As shown: two groups of locking holes A14 are provided on the top surface of the base plate 1, and notches A15 connected to the locking holes A14 are provided on the left and right sides of the base plate 1 respectively. Two groups of locking holes B16 are provided on the top surface of the circuit board 3, and notches B17 connected to the locking holes B16 are provided on the left and right sides of the circuit board 3 respectively. The locking holes A14 are equipped with threaded rods 18 of matching specifications, and the outer walls of the threaded rods 18 are equipped with two groups of locking nuts A19 and locking nuts B20 of matching specifications and relative positions. In this way, the base plate 1 and the circuit board 3 can be limited and fixed to prevent the ceramic piece from tilting and ensure the overall stability of the device.

[0027] The working principle and usage process of the present invention are as follows: when the device is required to work, the positioning hole A4 and the positioning pin 5 will accurately install the slot plate 2 on the base plate 1, and then the ceramic piece will be installed in the slot hole 8. The ceramic piece will be precisely in contact with the protruding column 6, which is convenient for the placement of the ceramic piece, prevents the ceramic piece from cracking and damage, and improves the stability of the electrical performance of the ceramic piece. Then, after the slot plate 2 is removed from the base plate 1, the positioning hole C9 and the positioning pin 5 can accurately install the circuit board 3 on the base plate 1, and the metal disc 13 will be in contact with the ceramic piece. The positive column 21 and the negative column 22 are respectively connected to the positive and negative poles of the power supply. The distance between each group of ceramic pieces is consistent and the height is consistent, thereby improving the consistency of the electrical performance of the ceramic pieces after production and improving the production effect.

[0028] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, from all perspectives, the embodiments should be regarded as illustrative and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes that fall within the meaning and range of equivalents of the claims be included in the present invention. Any reference signs in the claims should not be construed as limiting the claim to which they relate.

[0029] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A circular piezoelectric ceramic polarization device, comprising a base plate (1), the top surface of which is equipped with a slot plate (2) and a circuit board (3) of matching specifications; Its characteristics are: The top surface of the bottom plate (1) is fixedly mounted with evenly distributed bosses (6), the top surface of the bottom plate (1) is provided with four groups of positioning holes A (4) in opposite positions, and the positioning holes A (4) are equipped with positioning pins (5) of matching specifications, the top surface of the slot plate (2) is provided with evenly distributed slots (8) in opposite positions to the bosses (6), the top surface of the slot plate (2) is provided with four groups of positioning holes B (7) in opposite positions, and ceramic pieces of matching specifications are equipped in the slots (8); The top surface of the circuit board (3) is provided with four groups of positioning holes C (9) in opposite positions. The top surface of the circuit board (3) is equipped with evenly distributed copper pillars (10). The bottom surface of the circuit board (3) is fixedly installed with evenly distributed springs (12) connected to the copper pillars (10). The bottom surface of the spring (12) is fixedly installed with a metal disc (13) of matching specifications. The top surface of the circuit board (3) is fixedly installed with a positive pole (21) and a negative pole (22) in opposite positions.

2. The circular piezoelectric ceramic polarization device according to claim 1, characterized in that: The diameter of the protruding column (6) is smaller than the diameter of the slotted hole (8), and the range of the smaller diameter is between 1 mm and 6 mm.

3. The circular piezoelectric ceramic polarization device according to claim 1, characterized in that: The base plate (1) is made of stainless steel aluminum plate with a thickness of between 2 mm and 4 mm.

4. The circular piezoelectric ceramic polarization device according to claim 1, characterized in that: The upper surface of the circuit board (3) is formed by resistors with the same resistance value connected in parallel, the copper column (10) is connected to the resistor, and the spring (12) and the metal disc (13) are made of copper material.

5. The circular piezoelectric ceramic polarization device according to claim 1, characterized in that: The top surface of the base plate (1) is provided with two sets of locking holes A (14) in opposite positions, and the left and right sides of the base plate (1) are respectively provided with notches A (15) connected to the locking holes A (14). The top surface of the circuit board (3) is provided with two sets of locking holes B (16) in opposite positions, and the left and right sides of the circuit board (3) are respectively provided with notches B (17) connected to the locking holes B (16). The locking holes A (14) are equipped with threaded rods (18) of matching specifications, and the outer wall of the threaded rods (18) is equipped with two sets of locking nuts A (19) and locking nuts B (20) in opposite positions and matching specifications.

6. The circular piezoelectric ceramic polarization device according to claim 1, characterized in that: A fastening nut (11) of matching specifications is mounted on the outer wall of the copper column (10).

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