Automatic piezoelectric ceramic polarization machine for sensor production

Abstract

The application belongs to the technical field of polarization equipment, and relates to an automatic piezoelectric ceramic polarization machine for sensor production. An oil bath pot for preheating and impurity removal of silicon oil is arranged in the polarization instrument. A cantilever is arranged above the oil bath pot. The cantilever is slidingly connected to a sliding rail. One end of the cantilever is connected to an output end of an electric push rod. A ceramic chip clamp for reducing mechanical vibration influence is connected to a lower end of the cantilever. An adjustable cable mounting support for reducing frictional damage of a cable to a support is arranged in the polarization instrument. Power supply cables in the polarization instrument are all connected in series in the adjustable cable mounting support. The oil bath pot can purify silicon oil and improve product quality.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of polarization equipment, and relates to an automatic piezoelectric ceramic polarization machine for sensor production. BACKGROUND

[0002] Piezoelectric ceramics are functional inorganic materials capable of realizing mutual conversion of electric energy and mechanical energy, and are widely used in equipment manufacturing fields such as communication electronics, automobile industry and test measurement, and are a kind of precise electronic component materials in modern industrial system. With the rapid development of science and technology, more stringent requirements are put forward for the application of piezoelectric ceramics in many emerging technical fields, especially in special fields such as aerospace and nuclear power generation involving high-temperature environments, which often require materials to have high piezoelectric properties. Piezoelectric ceramics must be subjected to polarization treatment to have piezoelectric properties (i.e. the electric domains are forced to be uniformly oriented along the direction of the external electric field to form a certain residual polarization strength of the polycrystal), and polarization is a key step to obtain piezoelectric ceramic materials with excellent performance. There are three ways for polarization of piezoelectric ceramics, one is air polarization, the polarization voltage is generally 2-4 times the coercive field, and the polarization time is 10-60 min; one is silicon oil polarization, the polarization process is 100-180 DEG C, 3-10 kV / mm, 10-60 min; one is high-temperature air polarization method, the polarization temperature gradually decreases from above the Curie temperature to below 100 DEG C, and the polarization electric field gradually increases; the sample after polarization should be placed for 24 h before experimental test; the polarization method should be determined according to the actual situation of the material, the oil bath polarization method is suitable for high polarization electric field, the air polarization method is suitable for soft materials with low coercive field, and the air high-temperature polarization method is suitable for large-size piezoelectric ceramic materials. The existing automatic piezoelectric ceramic polarization machine will generate high temperature during use, and is prone to scalding and injury after polarization processing, and has low safety. At the same time, during the polarization process, the material is loose, which will lead to poor quality of the subsequent product, and impurities are easy to be generated during oil bath polarization. Therefore, it is urgent to design a new type of automatic piezoelectric ceramic polarization machine for sensor production. SUMMARY

[0003] The application aims to overcome the shortcomings of the prior art, and provides an automatic piezoelectric ceramic polarization machine for sensor production.

[0004] To achieve the above-mentioned purpose, the automatic piezoelectric ceramic polarization machine for sensor production comprises a polarization instrument, an oil bath pot for preheating and removing impurities of silicon oil is arranged in the polarization instrument, a cantilever is arranged above the oil bath pot, the cantilever is slidingly connected to a sliding rail, one end of the cantilever is connected to an output end of an electric push rod, a ceramic chip clamp for reducing mechanical vibration is connected to a lower end of the cantilever, an adjustable cable mounting support for reducing friction damage of cables and supports is arranged in the polarization instrument, and power supply cables in the polarization instrument are connected in series in the adjustable cable mounting support.

[0005] As a further technical scheme of the present application, the oil bath pot comprises a heating pot and a preheating pot, the heating pot is fixed on one side of the oil bath pot support, and the heating pot is used for heating the impurity-removed silicon oil in the preheating pot; the preheating pot is fixed on the other side of the oil bath pot support, and the preheating pot is used for preheating and impurity removal of the silicon oil.

[0006] As a further technical scheme of the present application, the inside of the heating pot is provided with a first heating rod and a first temperature sensor, the inside of the preheating pot is provided with a second heating rod and a second temperature sensor, the volume of the preheating pot is greater than that of the heating pot, and an oil suction pump is arranged on the support between the heating pot and the preheating pot, the oil suction pump comprises an oil inlet pipe and an oil outlet pipe, the input end of the oil suction pump is connected with the oil inlet pipe, the output end of the oil suction pump is connected with the oil outlet pipe, the oil inlet pipe extends into the preheating pot, and the lower end of the oil inlet pipe is close to the lower end wall of the preheating pot; the oil outlet pipe extends into the heating pot, and the lower end of the oil outlet pipe is close to the lower end wall of the heating pot.

[0007] As a further technical scheme of the present application, the adjustable cable mounting support comprises a cable clamp main body, a mounting plate is arranged on one side of the cable clamp main body, and the cable clamp main body is movably connected with one end of the mounting plate through a plurality of sets of buffer assemblies; a fixed clamping block is fixedly connected to the inner wall of one side of the cable clamp main body, and a movable clamping block is movably connected to the other side of the cable clamp main body; the buffer assembly comprises a cross rod, a round sleeve and a spring, a cavity is formed in the round sleeve, the spring is fixedly connected to the inner wall of the cavity of the round sleeve, and the other end of the spring is fixedly connected with one end of the cross rod; the round sleeve is sleeved on one end of the cross rod and movably connected with the cross rod.

[0008] As a further technical scheme of the present application, the cross-sectional shape of the fixed clamping block and the movable clamping block is arc-shaped, and the fixed clamping block and the movable clamping block are symmetrically arranged along the two sides of the cable clamp main body; a limiting nut is arranged on one side of the cable clamp main body, a threaded hole is formed in the top end of one side of the movable clamping block and matched with the limiting nut, a threaded groove is formed in the top end of one side of the cable clamp main body and matched with the limiting nut, and the threaded groove in the top end of the cable clamp main body, the threaded hole in the top end of one side of the movable clamping block and the limiting nut are located in the same plane.

[0009] As a further technical scheme of the present application, the ceramic sheet clamp comprises a mounting block, a clamp main body is arranged on one side of the mounting block, and a cavity is formed in the clamp main body; a horizontal plate is fixedly connected to one end of the clamp main body, and a vertical rod is connected through the horizontal plate; mounting sleeves are elastically connected to the two ends of the vertical rod, respectively; limiting blocks are arranged along the inner wall of the cavity of the clamp main body in a circumferential direction, and each limiting block is provided with a reset assembly at one end; each limiting block is movably connected with the inner wall of the cavity of the clamp main body through the reset assembly.

[0010] As a further technical solution of the present invention, each mounting sleeve has an inner cavity, and each mounting sleeve inner cavity is provided with a spring. The two ends of the spring in the inner cavity of the mounting sleeve are respectively fixedly connected to one end of the vertical rod and one end of the inner wall of the inner cavity of the mounting sleeve. One end of the limiting block is provided with an arc-shaped locking block, and the bottom end of the arc-shaped locking block of the limiting block is fixedly connected with a protruding block. The reset assembly includes a horizontal rod, a collar and a spring. The collar has a cavity, and the spring is provided in the cavity. The two ends of the spring are respectively fixedly connected to one end of the inner wall of the collar cavity and one end of the horizontal rod. The collar is sleeved on the horizontal rod and slidably connected to the horizontal rod.

[0011] Compared with the prior art, the beneficial effects of the present invention are:

[0012] 1. The silicone oil is preheated in a preheating pot to separate the impurities in the silicone oil into layers. The lower layer of clean silicone oil is then taken out and added to the heating pot to be heated to the operating temperature. This method can reduce the impact of impurities in the silicone oil on the polarization of the product.

[0013] 2. All power supply cables inside the polarizer are connected in series in the adjustable cable mounting bracket to reduce friction damage between the cables and the bracket;

[0014] 3. The limiting block is elastically connected to the fixture body through the reset component, which facilitates the clamping and fixing of the ceramic sheet. At the same time, the extension and retraction of the spring in the reset component buffers the mechanical vibration from the horizontal direction. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the appearance of the present invention;

[0016] Figure 2 This is a schematic diagram of the internal structure of the present invention;

[0017] Figure 3 This is a schematic diagram of the oil bath pot of the present invention;

[0018] Figure 4 This is a schematic diagram of the automatic oil absorption structure of the oil bath pot of the present invention;

[0019] Figure 5 This is a three-dimensional structural schematic diagram of the adjustable cable mounting bracket of the present invention;

[0020] Figure 6 This is an enlarged schematic diagram of the structure at point A of the adjustable cable mounting bracket of the present invention;

[0021] Figure 7 This is a schematic diagram of the movable clamping block structure of the adjustable cable mounting bracket of the present invention;

[0022] Figure 8 This is a schematic diagram of the internal structure of the buffer assembly of the adjustable cable mounting bracket of the present invention;

[0023] Figure 9 Fig. 3 is a schematic view of the three-dimensional structure of the ceramic sheet clamp of the present application;

[0024] Figure 10 Fig. 4 is an enlarged schematic view of the structure at B of the ceramic sheet clamp of the present application;

[0025] Figure 11 Fig. 5 is a schematic view of the internal structure of the ceramic sheet clamp of the present application;

[0026] Figure 12 Fig. 6 is a schematic view of the internal structure of the reset assembly of the ceramic sheet clamp of the present application;

[0027] Figure 13 Fig. 7 is a view of one assembly mode of the ceramic sheet clamp of the present application.

[0028] In the figure: 1, poling instrument; 2, cantilever; 3, slide rail; 4, electric push rod; 5, oil bath pot; 6, ceramic sheet clamp; 7, adjustable cable mounting bracket; 51, heating pot; 52, preheating pot; 511, first heating rod; 512, first temperature sensor; 521, second heating rod; 522, second temperature sensor; 53, oil suction pump; 531, oil inlet pipe; 532, oil outlet pipe; 54, bracket; 61, mounting block; 62, clamp body; 63, cross plate; 64, mounting sleeve; 65, limit block; 66, reset assembly; 71, cable clamp body; 72, buffer assembly; 73, mounting plate; 74, fixed clamp block; 75, movable clamp block; 76, limit nut. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application.

[0030] Embodiment 1:

[0031] The automatic piezoelectric ceramic poling machine for sensor production described in this embodiment comprises a poling instrument 1, the inside of the poling instrument 1 is provided with an oil bath pot 5 for preheating and removing impurities of silicon oil, the upper part of the oil bath pot 5 is provided with a cantilever 2, the cantilever 2 is slidingly connected to a slide rail 3, and one end of the cantilever 2 is connected to the output end of an electric push rod 4, the lower end of the cantilever 2 is connected to a ceramic sheet clamp 6 for reducing the influence of mechanical vibration, the inside of the poling instrument 1 is further provided with an adjustable cable mounting bracket 7 for reducing the frictional damage of the cable to the bracket, and the power supply cables inside the poling instrument 1 are all connected in series in the adjustable cable mounting bracket 7;

[0032] The oil bath pot 5 includes a heating pot 51 and a preheating pot 52, the heating pot 51 is fixed on one side of the oil bath pot support, and the heating pot 51 is used for heating the impurity-removed silicon oil in the preheating pot 52; the preheating pot 52 is fixed on the other side of the oil bath pot support, and the preheating pot 52 is used for preheating and impurity removal of the silicon oil; the inside of the heating pot 51 is provided with a first heating rod 511 and a first temperature sensor 512, the first heating rod 511 can heat the silicon oil in the heating pot 51, and the first temperature sensor 512 can detect the oil temperature in the heating pot 51, so as to accurately control the heating effect; the inside of the preheating pot 52 is provided with a second heating rod 521 and a second temperature sensor 522, the second heating rod 521 can heat the silicon oil in the preheating pot 52, and the second temperature sensor 522 can detect the oil temperature in the preheating pot 52, so as to accurately control the heating effect; the volume of the preheating pot 52 is greater than that of the heating pot 51, and the pure oil in the preheating pot 52 only accounts for a part of the crude oil, so that the volume of the preheating pot 52 needs to be greater than that of the heating pot 51, so as to take out the same volume of pure oil in the preheating pot 52 as the heating pot 51; when the silicon oil preheated in the preheating pot 52 is stratified, the user can manually scoop out the impurities, and then add the pure silicon oil into the heating pot 51;

[0033] The support 54 between the heating pot 51 and the preheating pot 52 is provided with an oil suction pump 53, the oil suction pump 53 includes an oil inlet pipe 531 and an oil outlet pipe 532, the input end of the oil suction pump 53 is connected with the oil inlet pipe 531, the output end of the oil suction pump 53 is connected with the oil outlet pipe 532, the oil inlet pipe 531 extends into the preheating pot 52, and the lower end of the oil inlet pipe 531 is close to the lower end wall of the preheating pot 52, the oil outlet pipe 532 extends into the heating pot 51, and the lower end of the oil outlet pipe 532 is close to the lower end wall of the heating pot 51, the stratified pure silicon oil in the preheating pot 52 is directly introduced into the heating pot 51 through the oil suction pump 53, and the oil inlet pipe 531 and the oil outlet pipe 532 are close to the lower end of the oil bath pot, so as to prevent the oil from splashing when being transported;

[0034] The adjustable cable mounting support 7 comprises a cable clamp body 71, one side of the cable clamp body 71 is provided with a mounting plate 73, and the cable clamp body 71 is movably connected with one end of the mounting plate 73 through a plurality of groups of buffer assemblies 72, a fixed clamping block 74 is fixedly connected to the inner wall of one side of the cable clamp body 71, and a movable clamping block 75 is slidably connected to the other side of the cable clamp body 71, the buffer assembly 72 comprises a cross rod, a round sleeve and a spring, the round sleeve is provided with a cavity, the inner wall of the cavity of the round sleeve is fixedly connected with the spring, one end of the spring is fixedly connected with the cross rod, and the round sleeve is sleeved on one end of the cross rod and movably connected with the cross rod; the cross section shape of the fixed clamping block 74 and the movable clamping block 75 is arc-shaped, and the fixed clamping block 74 and the movable clamping block 75 are symmetrically arranged along the two sides of the cable clamp body 71, the cable is fixed on the cable clamp body 71, and the movable clamping block 75 is slid along one side of the cable clamp body 71; a limiting nut 76 is arranged on one side of the cable clamp body 71, so as to facilitate the fixed connection between the movable clamping block 75 and the cable clamp body 71; a threaded hole is formed in the top end of one side of the movable clamping block 75 and matched with the limiting nut 76 in screw thread, so as to facilitate the fixation of one end of the movable clamping block 75 through the screw thread cooperation between the limiting nut 76 and the movable clamping block 75; a threaded groove is formed in the top end of one side of the cable clamp body 71 and matched with the limiting nut 76 in screw thread, the threaded groove of the cable clamp body 71 and the limiting nut 76 are matched with each other, so as to facilitate the fixed connection between the limiting nut 76 and one side of the cable clamp body 71; the threaded groove in the top end of the cable clamp body 71, the threaded hole in the top end of one side of the movable clamping block 75 and the limiting nut 76 are located in the same plane, so as to facilitate the fixation of the movable clamping block 75 during sliding;

[0035] The ceramic sheet clamp 6 comprises a mounting block 61, one side of which is provided with a clamp body 62, the clamp body 62 is provided with a cavity, one end of the clamp body 62 is fixedly connected with a horizontal plate 63, a vertical rod is connected through the horizontal plate 63, both ends of the vertical rod are elastically connected with mounting sleeves 64, the clamp body 62 is provided with a limiting block 65 along the inner wall of the cavity in the circumferential direction, one end of each limiting block 65 is provided with a reset assembly 66, each limiting block 65 is movably connected with the inner wall of the cavity of the clamp body 62 through the reset assembly 66, each mounting sleeve 64 is provided with an inner cavity, and each mounting sleeve 64 is provided with a spring in the inner cavity, both ends of the spring in the inner cavity of each mounting sleeve 64 are fixedly connected with one end of the vertical rod and one end of the inner wall of the inner cavity of the mounting sleeve 64, when the device is subjected to mechanical vibration, the mechanical vibration is buffered through the cooperation of the mounting sleeve 4, the vertical rod and the spring; one end of the limiting block 65 is provided with an arc-shaped clamping block, so that the limiting block 65 is adapted to the ceramic sheet; the bottom end of the arc-shaped clamping block of the limiting block 65 is fixedly connected with a protruding block, so as to fix one end of the ceramic sheet; the reset assembly 66 comprises a horizontal rod, a sleeve ring and a spring, the sleeve ring is provided with a cavity, and the cavity is provided with a spring, both ends of the spring are fixedly connected with one end of the inner wall of the cavity of the sleeve ring and one end of the horizontal rod, the sleeve ring is sleeved on the horizontal rod and is slidably connected with the horizontal rod, the limiting block 65 is elastically connected with the clamp body 62 through the reset assembly 66, so as to clamp and fix the ceramic sheet, and at the same time, the mechanical vibration from the horizontal direction can be buffered through the extension and contraction process of the spring in the reset assembly 66.

[0036] Embodiment 2

[0037] The embodiment provides one of the assembly modes of the ceramic sheet clamp, a plurality of ceramic sheet clamps are arranged at one end of the mounting frame, one end of the mounting block 61 of each ceramic sheet clamp is fixedly installed at one end of the mounting frame, in order to make the clamp body 62 buffer the mechanical vibration from the outside through the horizontal plate 63 arranged at one end, the spring is arranged in the mounting sleeve 64, the mechanical vibration is buffered through the extension and contraction process of the spring, both ends of the spring arranged in the inner cavity of the mounting sleeve 64 are fixedly connected with the vertical rod and the inner cavity of the mounting sleeve 64, when the device is subjected to mechanical vibration, the mechanical vibration can be buffered through the cooperation of the mounting sleeve 64, the vertical rod and the spring, in order to make the limiting block 65 adapt to the ceramic sheet, the arc-shaped clamping block is arranged at one end of the limiting block 65, the protruding block is arranged at the bottom end of the arc-shaped clamping block of the limiting block 65, so as to fix one end of the ceramic sheet, the reset assembly 66 is arranged in the circumferential direction of the limiting block 65, and the spring is arranged in the reset assembly 66, on the one hand, the limiting block 65 is elastically connected with the clamp body 62 through the reset assembly 66, so as to clamp and fix the ceramic sheet, and at the same time, the mechanical vibration from the horizontal direction can be buffered through the extension and contraction process of the spring in the reset assembly 66.

[0038] The above is further detailed description of the present application in combination with specific embodiments, and cannot be deemed as limitation of the present application to these descriptions. For those skilled in the art of the present application, without departing from the concept of the present application, some simple deductions or substitutions can be made, which shall be deemed as falling within the protection scope of the present application as defined by the claims.

Claims

1. An automatic piezoelectric ceramic poling machine for sensor production, comprising a poling instrument (1), characterized in that: The inside of the polarizer (1) is provided with an oil bath (5) for preheating and impurity removal of silicone oil, an overhanging arm (2) is arranged above the oil bath (5), the overhanging arm (2) is slidingly connected to a sliding rail (3), one end of the overhanging arm (2) is connected to the output end of an electric push rod (4), the lower end of the overhanging arm (2) is connected to a ceramic chip clamp (6) for reducing mechanical vibration, the inside of the polarizer (1) is provided with an adjustable cable mounting bracket (7) for reducing the friction damage of the cable to the support, and the power supply cables in the polarizer (1) are all connected in series in the adjustable cable mounting bracket (7); the oil bath (5) comprises a heating pot (51) and a preheating pot (52), the heating pot (51) is fixed on one side of an oil bath support, and the heating pot (51) is used for heating the silicone oil removed from the preheating pot (52); the preheating pot (52) is fixed on the other side of the oil bath support, and the preheating pot (52) is used for preheating and impurity removal of the silicone oil; the inside of the heating pot (51) is provided with a first heating rod (511) and a first temperature sensor (512), the inside of the preheating pot (52) is provided with a second heating rod (521) and a second temperature sensor (522), the volume of the preheating pot (52) is greater than that of the heating pot (51), and an oil suction pump (53) is arranged on a support (54) between the heating pot (51) and the preheating pot (52), the oil suction pump (53) comprises an oil inlet pipe (531) and an oil outlet pipe (532), the input end of the oil suction pump (53) is connected to the oil inlet pipe (531), the output end of the oil suction pump (53) is connected to the oil outlet pipe (532), the oil inlet pipe (531) extends into the preheating pot (52), the lower end of the oil inlet pipe (531) is close to the lower end wall of the preheating pot (52), the oil outlet pipe (532) extends into the heating pot (51), and the lower end of the oil outlet pipe (532) is close to the lower end wall of the heating pot (51).

2. The automatic piezoelectric ceramic poling machine for sensor production according to claim 1, characterized in that: The adjustable cable mounting bracket (7) comprises a cable clamp main body (71), one side of the cable clamp main body (71) is provided with a mounting plate (73), the cable clamp main body (71) is movably connected to one end of the mounting plate (73) through a plurality of sets of buffer assemblies (72), a fixed clamping block (74) is fixedly connected to the inner wall of one side of the cable clamp main body (71), a movable clamping block (75) is slidingly connected to the other side of the cable clamp main body (71), the buffer assembly (72) comprises a cross rod, a round sleeve and a spring, a cavity is formed in the round sleeve, the spring is fixedly connected to the inner wall of the cavity of the round sleeve, and one end of the spring is fixedly connected to the cross rod; the round sleeve is sleeved on one end of the cross rod and movably connected with the cross rod.

3. The automatic piezoelectric ceramic poling machine for sensor production according to claim 2, characterized in that: The fixed clamping block (74) and the movable clamping block (75) are both arc-shaped in cross section, and the fixed clamping block (74) and the movable clamping block (75) are symmetrically arranged on both sides of the cable clamp body (71); a limiting nut (76) is arranged on one side of the cable clamp body (71); a threaded hole is formed in the top end of one side of the movable clamping block (75) and is threadedly connected with the limiting nut (76); and a threaded slot is formed in the top end of one side of the cable clamp body (71) and is threadedly connected with the limiting nut (76); and the threaded slot in the top end of the cable clamp body (71), the threaded hole in the top end of one side of the movable clamping block (75), and the limiting nut (76) are located in the same plane.

4. The automatic piezoelectric ceramic poling machine for sensor production according to claim 1, characterized in that: The ceramic sheet clamp (6) comprises a mounting block (61), one side of the mounting block (61) is provided with a clamp body (62), the clamp body (62) is provided with a cavity, one end of the clamp body (62) is fixedly connected with a horizontal plate (63), the horizontal plate (63) is connected with a vertical rod in a penetrating mode, both ends of the vertical rod are elastically connected with mounting sleeves (64), the clamp body (62) is provided with limiting blocks (65) along the inner wall of the cavity in a circumferential mode, one end of each limiting block (65) is provided with a reset assembly (66), and each limiting block (65) is movably connected with the inner wall of the cavity of the clamp body (62) through the reset assembly (66).

5. The automatic piezoelectric ceramic poling machine for sensor production according to claim 4, characterized in that: Each mounting sleeve (64) is provided with an inner cavity, and a spring is arranged in the inner cavity of each mounting sleeve (64); the spring in the inner cavity of the mounting sleeve (64) is fixedly connected with one end of the vertical rod and one end of the inner wall of the inner cavity of the mounting sleeve (64); one end of the limiting block (65) is provided with an arc-shaped clamping block, the bottom end of the arc-shaped clamping block of the limiting block (65) is fixedly connected with a protruding block; and the reset assembly (66) comprises a horizontal rod, a sleeve ring and a spring, the sleeve ring is provided with a cavity, the cavity is provided with a spring, and both ends of the spring are fixedly connected with one end of the inner wall of the cavity of the sleeve ring and one end of the horizontal rod. The sleeve ring is sleeved on the horizontal rod and is in sliding connection with the horizontal rod.

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