Overturning electrode large circular tube piezoelectric ceramic polarization device

Abstract

The utility model relates to a turnover electrode large circular tube piezoelectric ceramic polarization device, which comprises an upper polarization plate, a lower polarization plate, an insulating connecting rod and a polarization rod, the upper polarization plate, the lower polarization plate and the polarization rod are all made of conductive materials, and the upper polarization plate and the lower polarization plate are arranged at intervals up and down through the insulating connecting rod. The upper ends of the polarization rods contact with the polarization upper plate; the lower end of the polarization rod is used for abutting against a to-be-polarized electrode turning large circular tube. According to the polarization device, the polarization breakdown rate can be reduced, damage to the piezoelectric ceramic silver layer is effectively avoided, operation is simple, and the consistency of polarization efficiency and polarization performance is improved.

Description

Technical field:

[0001] The utility model belongs to the technical field of electronic component manufacturing, and in particular relates to a flip-electrode large round tube piezoelectric ceramic polarization device. Background technology:

[0002] In the polarization process of the piezoelectric ceramic with flipped electrode, the traditional method is to place an insulating plate on the copper plate at the bottom of the polarization fixture, place the bottom of the ceramic tube without electrode on the insulating plate, and place two elastic copper sheets between the insulating plate and the copper plate at the bottom of the polarization fixture. One end of the elastic copper sheet is in contact with the copper plate, and the other end is in contact with the outer wall of the flipped electrode large round tube. The inner wall is contacted with another two cross-elastic copper sheets. A copper rod is inserted into the intersection of the elastic copper sheets to make it contact with the polarization fixture.

[0003] The traditional polarization method has the following problems:

[0004] (1) Only one large circular electrode tube can be polarized in the polarization cell at a time, resulting in low polarization efficiency.

[0005] (2) During the contact between the bottom of the electrode-turned large round tube and the insulating plate, the amount of silicone oil between the two is very small, which cannot provide a good insulation effect. Therefore, many electrode-turned large round tubes are broken down during the polarization process, greatly reducing the yield rate.

[0006] (3) During the contact between the elastic copper sheet and the silver layer of the large round tube of the electrode, the silver layer is easily scratched, affecting the appearance of the finished product. At a high oil temperature of 150-160°C, the complex operation process is more likely to cause burns to the operator. Utility model content:

[0007] The technical problem to be solved by the utility model is to provide a flip-electrode large round tube piezoelectric ceramic polarization device, which can reduce the polarization breakdown rate, effectively avoid damage to the piezoelectric ceramic silver layer, is simple to operate, and improves the polarization efficiency and consistency of polarization performance.

[0008] The technical solution of the utility model is to provide a piezoelectric ceramic polarization device for a flip electrode large circular tube, comprising a polarization upper plate, a polarization lower plate, an insulating connecting rod and a polarization rod, wherein the polarization upper plate and the polarization lower plate are arranged at upper and lower intervals through the insulating connecting rod, and the polarity connection between the polarization upper plate and the polarization lower plate and the power supply is determined according to the polarity of the flip electrode large circular tube, taking the flip electrode large circular tube as an example with positive inside and negative outside, the polarization upper plate and the polarization lower plate are respectively connected to the positive and negative electrodes of the power supply; the upper end of the polarization rod is in contact with the polarization upper plate; and the lower end of the polarization rod is used to abut against the flip electrode large circular tube to be polarized.

[0009] The utility model uses an insulating connecting rod to connect and fix the polarization upper plate and the polarization lower plate. The polarization upper plate and the polarization lower plate are connected to the positive and negative poles of the power supply respectively, and the polarization rod is in contact with the polarization upper plate. A DC electric field of a certain magnitude is passed between the polarization upper plate and the polarization lower plate to complete the polarization of the flip electrode large round tube piezoelectric ceramic element. When the polarization device is polarized, the polarization device is placed in silicone oil, and the flip electrode large round tube is placed on the polarization lower plate so that the silicone oil immerses the entire flip electrode large round tube. The polarization device can reduce the polarization breakdown rate, effectively avoid damage to the piezoelectric ceramic silver layer, and is simple to operate, and improves the polarization efficiency and consistency of polarization performance.

[0010] Preferably, the polarization upper plate and the polarization lower plate are square structures, and connection holes are opened on the four corners of the polarization upper plate and the polarization lower plate. There are four insulating connecting rods, and the upper and lower ends of the insulating connecting rods are respectively inserted into the corresponding connecting holes of the polarization upper plate and the polarization lower plate.

[0011] Preferably, the front part of the lower end of the polarization rod is in the shape of a hook, and the upper end of the polarization rod passes through the polarization upper plate upward and contacts the polarization upper plate. The hook shape of the lower end of the polarization rod facilitates contact with the large round tube of the flip electrode placed on the polarization lower plate, and at the same time, the weight of the polarization rod prevents the large round tube of the flip electrode from tipping over.

[0012] Preferably, the polarization upper plate has regularly arranged through holes for the polarization rods to pass through.

[0013] Preferably, a positioning groove is provided on the polarization lower plate, and the positioning groove is a through groove, so that the arrangement of the positioning groove facilitates the placement of the flip electrode large round tube on the polarization lower plate.

[0014] Preferably, two groups of positioning grooves are symmetrically arranged on the polarization lower plate, and each group of positioning grooves includes two through grooves arranged front and back. Multiple large round tubes of flip electrodes can be placed for polarization at the same time.

[0015] Preferably, a through hole is provided in the middle of the polarization lower plate, and the through hole is connected to each positioning groove, so that the rear end of the flip electrode large circular tube placed on the polarization lower plate is suspended.

[0016] Furthermore, the insulating connecting rod is a polytetrafluoroethylene tube, and the polarizing rod is a brass rod.

[0017] Compared with the prior art, the utility model has the following advantages:

[0018] The utility model places the end with the larger silver layer on the outer wall of the flip electrode large round tube at the positioning groove of the polarization lower plate, suspends the other end, inserts the lower end of the polarization rod on the inner wall of the flip electrode large round tube, connects the upper end of the polarization rod with the polarization upper plate, passes a direct current electric field between the polarization upper plate and the polarization lower plate, and polarization of the flip electrode large round tube piezoelectric ceramic element can be completed, the polarization breakdown rate can be reduced, and the damage to the piezoelectric ceramic silver layer is effectively avoided. The operation is simple and the polarization efficiency and the consistency of polarization performance are improved. Description of the drawings:

[0019] Figure 1 Schematic diagram of polarized upper plate.

[0020] Figure 2 Schematic diagram of the polarized lower plate.

[0021] Figure 3 Schematic diagram of the insulating connecting rod.

[0022] Figure 4 Schematic diagram of the polarization rod. Specific implementation method:

[0023] The present invention will be further described below with reference to the accompanying drawings:

[0024] like Figure 1-4 As shown, the flip electrode large round tube piezoelectric ceramic polarization device of the utility model comprises a polarization upper plate 1, a polarization lower plate 2, an insulating connecting rod 3 and a polarization rod 4. Among them, the polarization upper plate 1, the polarization lower plate 2 and the polarization rod 4 are made of conductive materials, and brass is selected in this embodiment; the insulating connecting rod 3 is a polytetrafluoroethylene tube.

[0025] The structure of the polarization upper plate 1 and the polarization lower plate 2 is as follows Figure 1 and 2 As shown, the polarization upper plate 1 and the polarization lower plate 2 are both square in shape and have the same size. Among them, 9×11 regularly arranged through holes 11 are opened on the polarization upper plate 1, the diameter of the through holes is 6-8mm, and the distance between adjacent through holes is 25mm. The polarization lower plate 2 is hollowed out in the center, and the hollowed-out part is square in shape. The hollowed-out part is provided with through grooves on both sides of the polarization lower plate 2. The through grooves are positioning grooves 21, and their width is adapted to the arc outer wall of the large circular tube of the flip electrode, which can be used to position the large circular tube of the flip electrode to prevent it from rolling. In this embodiment, four positioning grooves 21 are symmetrically opened on both sides, and the positioning grooves 21 on the same side are arranged at intervals, so that a gap is left between the large circular tubes of the flip electrode after the large circular tube of the flip electrode is placed. In this way, the four positioning grooves 21 can polarize four large circular tube elements at a time and reduce mutual interference.

[0026] The four corners of the polarization upper plate 1 and the polarization lower plate 2 are provided with connection holes 12 with a diameter of 10 mm. Figure 3The insulating connecting rod 3 is connected and fixed. The insulating connecting rod 3 has a diameter of 20 mm and a length of 200 mm, and has M6 internal threads at both ends. The polarization upper plate 1, the polarization lower plate 2 and the insulating connecting rod 3 are connected and fixed by bolts. In addition, a support leg about 15 mm long can be connected to the lower end of the insulating connecting rod.

[0027] like Figure 4 The polarization rod 4 is a brass rod with a hook at the front end. The straight rod part is 6 mm in diameter and 220 mm long. The hook part is 4 mm in diameter and about 30 mm long with a conical tip. The main function of the polarization rod 4 is to lead the current of the polarization upper plate to the inner wall electrode of the flip electrode tube. At the same time, it can also prevent the flip electrode tube from tipping over.

[0028] This embodiment is explained by taking the example of a large circular tube with positive inside and negative outside of the flipped electrode. When in use, the polarization device is placed in a polarization tank, the end with a larger silver layer on the outer wall of the large circular tube of the flipped electrode is placed on the positioning groove of the polarization lower plate, and the other end is left hanging. Then the upper end of the polarization rod is passed through the opening of the polarization upper plate, and the lower end with a hook is inserted into the inner wall of the large circular tube of the flipped electrode to connect it to the polarization upper plate. Then silicone oil is added to the polarization tank to immerse the entire large circular tube of the flipped electrode. Finally, a DC electric field of a certain size is passed between the polarization upper plate and the polarization lower plate to complete the polarization process of the piezoelectric ceramic element of the large circular tube of the flipped electrode.

[0029] By adopting the piezoelectric ceramic polarization device of the utility model, the bottom end of the large round tube of the flip electrode that is not coated with silver can fully contact the silicone oil, which can effectively reduce the breakdown rate; 4 large round tubes of flip electrodes can be polarized each time, and the polarization efficiency is increased by 4 times; the damage of the copper sheet to the silver layer during the polarization process can be avoided, ensuring the beauty of the round tube; the entire polarization process is simple to operate, and it is not easy to cause silicone oil splashing to burn the operator. This polarization device is not only suitable for polarizing large round tubes of flip electrodes, but also suitable for ordinary large round tubes of various sizes.

Claims

1. A piezoelectric ceramic polarization device with a large round tube and a flip electrode, characterized in that: It includes a polarization upper plate, a polarization lower plate, an insulating connecting rod and a polarization rod. The polarization upper plate, the polarization lower plate and the polarization rod are all made of conductive materials. The polarization upper plate and the polarization lower plate are arranged at upper and lower intervals through the insulating connecting rod. The upper end of the polarization rod is in contact with the polarization upper plate; the lower end of the polarization rod is used to abut against the large circular tube of the flip electrode to be polarized.

2. The flip-electrode large round tube piezoelectric ceramic polarization device according to claim 1, characterized in that: The polarization upper plate and the polarization lower plate are square structures, and connection holes are opened on the four corners of the polarization upper plate and the polarization lower plate. There are 4 insulating connecting rods, and the upper and lower ends of the insulating connecting rods are respectively inserted into the corresponding connection holes of the polarization upper plate and the polarization lower plate.

3. The flip-electrode large round tube piezoelectric ceramic polarization device according to claim 1, characterized in that: The front part of the lower end of the polarization rod is in a hook shape, and the upper end of the polarization rod penetrates the polarization upper plate from bottom to top.

4. The flip-electrode large round tube piezoelectric ceramic polarization device according to claim 1, characterized in that: The polarization upper plate is regularly arranged with through holes for the polarization rods to pass through.

5. The flip-electrode large round tube piezoelectric ceramic polarization device according to claim 1, characterized in that: A positioning groove is provided on the polarization lower plate, and the positioning groove is a through groove.

6. The flip-electrode large round tube piezoelectric ceramic polarization device according to claim 5, characterized in that: Two groups of positioning grooves are symmetrically arranged on the polarization lower plate, and each group of positioning grooves includes two through grooves arranged front and back.

7. The flip-electrode large round tube piezoelectric ceramic polarization device according to claim 6, characterized in that: A through hole is provided in the middle of the polarization lower plate, and the through hole is connected with each positioning groove.

8. The flip-electrode large round tube piezoelectric ceramic polarization device according to claim 1, characterized in that: The insulating connecting rod is a polytetrafluoroethylene tube and the polarizing rod is a brass rod.

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