CN211858686U - Multi-chuck self-heating oil bath type piezoelectric ceramic polarization device - Google Patents

Abstract

The utility model discloses a multi-chuck self-heating oil bath type piezoelectric ceramic polarization device, which comprises a polarization box with an opening at the top, a lifting mechanism arranged in the polarization box and a clamping mechanism arranged at the top of the lifting mechanism, wherein a pair of thermocouples are symmetrically inserted at the left side and the right side in the polarization box so as to heat silicon oil stored in the polarization box; the clamping mechanism comprises an insulating plate fixedly connected with the top of the lifting mechanism, a first conducting block and a second conducting block, wherein the first conducting block and the second conducting block are fixed on the upper surface of the insulating plate in parallel through a positioning screw and a nut, a plurality of through holes are formed in the first conducting block and the second conducting block at opposite positions in the horizontal direction at equal intervals, a set of clamping assembly used for clamping a sample is arranged in each through hole, each clamping assembly comprises two detachable chucks, and the chuck is various in form. The utility model discloses can polarize in room temperature ~250 ℃ oil bath environment to the piezoceramics sample of multiple shape and size, the sample loading and unloading can go on in the air, safe and reliable, and the centre gripping mode is nimble, various, and the clamp force is adjustable, difficult damage sample.

Description

Multi-chuck self-heating oil bath type piezoelectric ceramic polarization device

Technical Field

The utility model belongs to the technical field of piezoceramics material polarizes, relate to through polarize the equipment of handling so that it has piezoelectric property to piezoceramics, concretely relates to many chucks self-heating oil bath formula piezoceramics polarization device.

Background

The piezoelectric ceramic is an inorganic material with the function of realizing the interconversion of electric energy and mechanical energy, has wide application in the field of equipment manufacturing such as communication electronics, automobile industry, test and measurement and the like, and is a precise electronic component material in a modern industrial system. With the rapid development of science and technology, more rigorous requirements are put on the application of piezoelectric ceramics in many emerging technical fields, and particularly, materials are often required to have high piezoelectric performance in special fields such as aerospace, nuclear power generation and the like which relate to high-temperature environments. The piezoelectric ceramic has piezoelectric properties after being polarized (i.e. the electric domain is forced to be uniformly oriented along the direction of an external electric field by an external electric field so as to form a certain remanent polarization strength of polycrystal), and the polarization is a key step for obtaining the piezoelectric ceramic material with excellent performance. Under laboratory and industrial environment, the shapes, sizes, materials and the like of piezoelectric ceramics needing to be polarized are different, so that a sample needs to be polarized under a proper electric field, time and temperature to fully activate the piezoelectric performance of the piezoelectric ceramics, and the application under harsh conditions is expected to be met. The polarization of the piezoelectric ceramic is usually carried out in three modes, one mode is air polarization, the polarization voltage is generally 2-4 times of the coercive field, and the polarization time is 10-60 min; one is silicone oil polarization, and the polarization process is 100-180 ℃, 3-10 kV/mm, 10-60 min; one is a high-temperature air polarization method, the polarization temperature is gradually reduced from above the Curie temperature to below 100 ℃, and the polarization electric field is gradually enhanced; after the polarized sample is placed for 24 hours, the experimental test is carried out. The polarization mode is determined according to the actual condition of the material, the oil bath polarization method is suitable when the polarization electric field is high, the air polarization method is suitable for the soft material with lower coercive field, and the air high-temperature polarization method is suitable for the piezoelectric ceramic material with large size.

At present, most of piezoelectric ceramic polarization devices on the market are designed by users. The design is rough, spare and accessory parts are difficult to process, the processing cost is high, and the method is not economical; the handling of the sample needs to be operated in a silicone oil environment, and the danger of high-temperature scalding exists; particularly, uniform polarization is difficult to realize for samples with different shapes and sizes, and polarization of the same sample in different directions is difficult to realize; in addition, there are also loose grips and easily damaged samples; and cannot polarize a plurality of samples simultaneously.

SUMMERY OF THE UTILITY MODEL

To above-mentioned prior art in the polarizing device design coarse, difficult processing, can not adapt to the sample of different shapes and size, the potential safety hazard big and inefficiency scheduling problem, the utility model aims at providing a many chucks self-heating oil bath formula piezoceramics polarizing device, this polarizing device can be to the sample of different shapes/size, satisfy different polarization directions, have advantages such as the centre gripping is reliable, area of centre gripping and clamping-force are adjustable, the loading and unloading sample is easy, multistation polarizes simultaneously, operation safety, economy high efficiency.

In order to solve the technical problem, the utility model provides a multi-chuck self-heating oil bath type piezoelectric ceramic polarization device, which comprises a polarization box with an opening at the top, a lifting mechanism arranged in the polarization box and a clamping mechanism arranged at the top of the lifting mechanism, wherein a pair of thermocouples are symmetrically arranged and inserted in the polarization box to heat silicon oil, and the outer side surface of the polarization box is provided with a grounding terminal;

the clamping mechanism comprises an insulating plate fixedly connected with the top of the lifting mechanism, a first conducting block and a second conducting block, wherein the first conducting block and the second conducting block are fixed on the upper surface of the insulating plate in parallel through a positioning screw and a nut; and the tail parts of the positioning screws are respectively used as a front binding post and a rear binding post.

The fixed clamping assembly comprises a first clamping rod connected with a first conducting block through hole in a threaded manner, the sliding clamping assembly comprises a second clamping rod which can slide along a second conducting block through hole and has a fixing part at the tail part, the front end parts of the first clamping rod and the second clamping rod are provided with chucks which can be detachably connected, and elastic pieces are sleeved between the chucks of the second clamping rod and the side surfaces of the second conducting block.

Above-mentioned many chucks self-heating oil bath formula piezoceramics polarization device, supporting rod one and supporting rod two are the double-threaded screw that the afterbody was equipped with the nut, and the front end portion chuck is rather than threaded connection, and the nut is as the mounting of two afterbody of supporting rod. For convenience of operation, two nuts are preferably assembled on the two tail parts of the clamping rod at a certain interval, and a detachable insulating base plate is arranged between the two side surfaces of the conductive block and the adjacent nut. In order to adapt to various samples, the first chuck and the second chuck can be point type, line type, plane type and other chucks commonly used in the field. The resilient member is preferably a spring.

In the multi-chuck self-heating oil bath type piezoelectric ceramic polarization device, the lifting mechanism comprises a positioning block assembly, a guide block assembly and a support rod assembly;

the positioning block assembly comprises a first positioning block and a second positioning block which are fixed on one side of the lower surface of the insulating plate in parallel, and a third positioning block and a fourth positioning block which are arranged on one side of the bottom of the polarization box in parallel and correspond to the first positioning block and the second positioning block in position;

the guide block assembly comprises a first guide block and a second guide block which are fixed on the other side of the bottom of the polarization box in parallel, and a third guide block and a fourth guide block which are arranged on the other side of the lower surface of the insulating plate in parallel and correspond to the first guide block and the second guide block in position, and guide through holes along the horizontal direction are formed in the first guide block, the second guide block, the third guide block and the fourth guide block;

the support rod assembly comprises a first support rod, a second support rod, a third support rod, a fourth support rod and a fourth support rod, wherein the first support rod, the second support rod and the third support rod are arranged between the first positioning block and the first guide block in a crossed mode, the third support rod, the fourth positioning block and the fourth guide block are arranged between the second positioning block and the second guide block in a crossed mode, the first support rod and the third support rod are located on the inner side;

the distance between the first positioning block 5, the first guide block 10, the third positioning block 4 and the third guide block 19 in the horizontal projection is the thickness of the supporting rod, and the distance between the second positioning block 42, the second guide block 31, the fourth positioning block 41 and the fourth guide block 33 in the horizontal projection is the thickness of the supporting rod;

the lift mechanism also includes a connecting rail assembly for connecting the end of the support rod and the locating/guide block.

Above-mentioned many chucks self-heating oil bath formula piezoceramics polarization device, it includes that both ends are equallyd divide and do not be equipped with the horizontal pole one of nut to connect the horizontal pole subassembly, horizontal pole two, horizontal pole three, horizontal pole four, horizontal pole one wears to establish locating piece three in proper order, two low tip of bracing piece, four low tip and the locating piece four of bracing piece, horizontal pole two wears to establish locating piece one in proper order, bracing piece one high tip, three high tip of bracing piece and locating piece two, horizontal pole three wears to establish three guide hole of guide block in proper order, two high tip of bracing piece, four high tip of bracing piece and guide hole of guide block four, four guide hole of wearing to establish guide block one in proper order of horizontal pole, one low tip of bracing piece, three low tip of bracing piece and. The multi-chuck self-heating oil bath type piezoelectric ceramic polarization device is characterized in that a handle for controlling the lifting mechanism to lift so as to drive the clamping mechanism to move up and down is further arranged on the insulating plate. The handle and the insulating plate can be fixedly connected or detachably connected, and the detachable connection is preferred in the invention.

Furthermore, in order to facilitate control of lifting and positioning, through holes are formed in the vertical direction and the corresponding positions of the insulating plate on the upper side walls of the third guide block and the fourth guide block, and positioning nails are inserted into the through holes for positioning.

According to the multi-chuck self-heating oil bath type piezoelectric ceramic polarization device, the clamping blocks are arranged on the left side and the right side of the polarization box, and the thermocouples are inserted into the clamping blocks.

The utility model provides a many chucks self-heating oil bath formula piezoceramics polarization device has following beneficial effect:

1. the utility model discloses a chuck of connection can be dismantled in the exposed core setting of fixed/slip centre gripping subassembly, the chuck front side can be selected according to required centre gripping piezoceramics sample to distance between an adjustable centre gripping exposed core and the conducting block side makes the centre gripping subassembly can carry out the centre gripping to arbitrary shape (like ring piece, circle thin slice, square thin slice, rectangular, square, pipe, cylinder, hemisphere etc.) and the piezoceramics of size, has guaranteed the flexibility and the variety of centre gripping piezoceramics sample, and application scope is wide.

2. The utility model discloses a set up the elastic component in the cover between chuck and conducting block two sides on the supporting rod two of slip centre gripping subassembly, utilize the elasticity of elastic component to compress tightly the piezoceramics sample, and then through the distance adjustment clamp force between two exposed core of adjustment supporting rod and the conducting block two, make it the centre gripping reliably and be difficult for damaging the potsherd.

3. The piezoelectric ceramic sample can be taken and placed by pulling the second clamping rod of the sliding clamping assembly towards the direction of the compression elastic piece, the operation is simple, and the sample direction can be adjusted so as to meet different polarization directions; and through set up the fixed clamping assembly of multiunit/slip on the conducting block to can realize the polarization simultaneously of multistation, economy and high efficiency.

4. The utility model discloses an elevating system adjusts fixture's upper and lower position to satisfy polarization and the chuck of changing clamping structure, guarantee the security and the high efficiency of operation, and go up and down with pulling elevating system through setting up the handle on the insulation board, further guarantee the convenience of operation.

Drawings

FIG. 1 is a front view of the multi-chuck self-heating oil bath type piezoelectric ceramic polarizer of the present invention;

FIG. 2 is a top view of the multi-chuck self-heating oil bath type piezoelectric ceramic polarizer of the present invention;

fig. 3 is a plan view of the lifting mechanism of the present invention.

1. A thermocouple; 2. a clamping block; 3. a polarization box; 4. a third positioning block; 5. a first positioning block; 6. 8, 16, 20, 25, 26, 29, 32, 35, 37, 40, 45, nut; 7. a first supporting rod; 9. a second supporting rod; 10. a first guide block; 11. a grounding binding post; 12. an insulating plate; 13. positioning a first nail; 14. a first conductive block; 15. positioning a first screw rod; 17. a first double-end screw; 18. a handle; 19; a third guide block; 21. a second conductive block; 22. positioning a second screw rod; 23. a spring; 24. an insulating base plate; 27. a chuck; 28. a second cross bar; 30. A cross bar III; 31. a second guide block; 33. A guide block IV; 34. a second positioning nail; 36. a fourth supporting rod; 38. a third supporting rod; 39. a cross bar V; 41. A positioning block IV; 42. a second positioning block; 43. a first cross bar; 44. and a cross bar IV.

Detailed Description

So that the technical solutions of the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings, it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, belong to the present invention.

As shown in fig. 1, the utility model discloses a many chucks self-heating oil bath formula piezoceramics polarization device is equipped with open-ended polarization case 3, sets up elevating system in polarization case 3 and sets up in the fixture at elevating system top including the top.

The polarization box 3 is used for containing silicon oil for polarization, is integrally of a cuboid structure, is fixedly provided with clamping blocks 2 with completely the same structure on the left side wall and the right side wall respectively, and is provided with a thermocouple 1 in the clamping blocks 2 in an inserted mode. And the outer side surface of the polarization box 3 is provided with a grounding terminal 11.

The clamping mechanism is used for clamping the polarization sample, and as shown in fig. 2, comprises an insulating plate 12 fixedly connected with the top of the lifting mechanism, and a first conducting block 14 and a second conducting block 21 which are arranged on the upper surface of the insulating plate 12 in parallel. The first conductive block 14 and the second conductive block 21 are long blocks with the same external dimension. The left end and the right end of the first conducting block 14 and the second conducting block 21 are respectively provided with a through hole along the vertical direction, the insulating plate 12 is provided with four blind holes corresponding to the through holes of the first conducting block 14 and the second conducting block 21, and the insulating plate 12 is fixedly connected with the first conducting block 14 and the second conducting block 21 through two positioning screws 15, two positioning screws 22 and matched nuts 16. The tail parts of one of the first positioning screw rods 15 and one of the second positioning screw rods 22 are respectively used as a front binding post and a rear binding post. The first conductive block 14 is provided with five tapping through holes in the horizontal direction, and the second conductive block 21 is provided with five non-tapping through holes in the opposite position in the horizontal direction. The purpose of the first conductive block tapping is that a double-threaded screw matched with the conductive block tapping can rotate to adjust the screwing-in depth of the double-threaded screw, so that the clamping width and the clamping force are adjusted; the purpose of the second non-tapping conductive block is to push a matched double-threaded screw to clamp a sample under the action of adjustable spring elasticity. And a fixed clamping assembly and a sliding clamping assembly for clamping a sample are respectively arranged in the through holes on the first conductive block 14 and the second conductive block 21 which are opposite in position. The fixed clamp assembly includes a first clamp rod (in this embodiment, a first double-threaded screw 17) and a clamp head 27. The first double-threaded rod 17 is screwed into the through hole of the first conductive block 14, the nut 20 is assembled at the tail part of the first double-threaded rod 17, and the clamping head 27 is connected to the front end of the first double-threaded rod 17 through threads. The clamping end of the first double-threaded screw 17 is opposite to the second conductive block 21 and is spaced from the side face of the first conductive block 14 by a certain distance. The sliding clamping assembly comprises a second clamping rod (a second double-threaded screw in the embodiment) and a clamping head 27. The second double-threaded screw penetrates through the through hole of the second conducting block 21, the tail of the second double-threaded screw is sequentially provided with a nut 25 and a nut 26 at a certain interval, and the chuck 27 is in threaded connection with the front end of the second double-threaded nut. The clamping end of the double-head screw rod II is opposite to the clamping head 27 of the double-head screw rod I17 and is spaced from the side surface of the second conductive block 21 by a certain distance. The double-end screw rod II is sleeved with a spring 23, and the spring 23 is located between the chuck 27 and the side face of the second conducting block 21. An insulating pad 24 is detachably connected between the nut 26 and the side surface of the second conductive block 21. Before clamping the sample, the insulating pad 24 makes the first conductive block 14 and the chuck on the second conductive block 21 spaced by a certain distance, so as to prevent the formation of an electric loop under high voltage; when only a portion of the stations are used, the insulating spacer 24 isolates the two clamps of the unused stations from forming an electrical circuit. In order to adapt to various samples, the rear side of the chuck is provided with a tapping blind hole matched with the double-head screw, and the front side of the chuck is processed into a point type chuck, a line type chuck, a surface type chuck and other chucks commonly used in the field. In addition, the clamping distance and the clamping force can be adjusted by adjusting the distance between the clamping end of the first double-threaded screw 17/the second double-threaded screw and the side face of the first conductive block 14/the second conductive block 21, so that piezoelectric ceramic samples with different sizes and shapes can be polarized at the same time, and the piezoelectric ceramic sample is prevented from being damaged.

The lifting mechanism is used for driving the clamping mechanism to move up and down, and comprises a positioning block assembly, a guide block assembly, a supporting rod assembly and a connecting cross rod assembly as shown in figures 1 and 3. The positioning block assembly comprises a first positioning block 5, a second positioning block 42, a third positioning block 4 and a fourth positioning block 41 which are consistent in shape and size. The first positioning block 5 and the second positioning block 42 are fixed on the left side of the lower surface of the insulating plate 12 in parallel, and the third positioning block 4 and the fourth positioning block 41 are arranged on the left side of the bottom of the polarization box 3 in parallel, correspond to the first positioning block 5 and the second positioning block 42 in position respectively, and move the thickness of the support rod outwards. The guide block assembly comprises a first guide block 10, a second guide block 31, a third guide block 19 and a fourth guide block 33 which are consistent in shape and size and are provided with guide through holes. The first guide block 10 and the second guide block 31 are fixed on the right side of the bottom of the polarization box 3 in parallel, and the third guide block 19 and the fourth guide block 33 are arranged on the right side of the lower surface of the insulating plate 12 in parallel and respectively correspond to the first guide block 10 and the second guide block 31 in position and move the thickness of the support rod outwards.

The support rod assembly comprises a first support rod 7, a second support rod 9, a third support rod 38 and a fourth support rod 36 which are the same in thickness. The connecting rail assembly includes first rail 43, second rail 28, third rail 30, fourth rail 44, and fifth rail 39. Through holes are formed in the first positioning block 5, the second positioning block 42, the third positioning block 4 and the fourth positioning block 41. And guide through holes along the horizontal direction are formed in the first guide block 10, the second guide block 31, the third guide block 19 and the fourth guide block 33. The first support rod 7 is arranged between the first positioning block 5 and the first guide block 10, and the third support rod 38 is arranged between the second positioning block 42 and the second guide block 31; the second cross rod 28 sequentially penetrates through the through hole of the first positioning block 5, the left end of the first support rod 7, the left end of the third support rod 38 and the through hole of the second positioning block 42, and the two ends of the second cross rod are respectively provided with a nut 6 and another nut (not shown in the figure) for fixing; the cross bar IV 44 sequentially penetrates through the guide through hole of the guide block I10, the right end part of the support bar I7, the right end part of the support bar III 38 and the guide through hole of the guide block II 31, and the two ends of the cross bar IV are respectively provided with a nut 35 and a nut 45 for fixing. The second support rod 9 is arranged between the third positioning block 4 and the third guide block 19, and the fourth support rod 36 is arranged between the fourth positioning block 41 and the fourth guide block 33; the first cross rod 43 sequentially penetrates through the through hole of the third positioning block 4, the left end of the second supporting rod 9, the left end of the fourth supporting rod 36 and the through hole of the fourth positioning block 41, and the two ends of the first cross rod are respectively assembled with a nut 29 and a nut 40 for fixing; the third cross rod 30 is sequentially inserted through the guide through hole of the third guide block 19, the right end of the second support rod 9, the right end of the fourth support rod 36 and the guide through hole of the fourth guide block 33, and the two ends of the third cross rod are respectively provided with a nut 32 and another nut (not shown in the figure) for fixing. A cross rod five 39 sequentially penetrates through the intersection of the support rod one 7 and the support rod two 9 and the intersection of the support rod three 38 and the support rod four 36, and nuts 8 and nuts 37 are respectively assembled at the two ends of the cross rod five for fixing; the distance between the first positioning block 5, the first guide block 10, the third positioning block 4 and the third guide block 19 in the horizontal projection is the thickness of the support rod, and the distance between the second positioning block 42, the second guide block 31, the fourth positioning block 41 and the fourth guide block 33 in the horizontal projection is the thickness of the support rod. When the lifting mechanism is lifted up and down, the supporting rod rotates at the end part of the positioning block by taking the cross rod as a shaft, and the supporting rod slides along the guide through hole at the end part of the guide block. In order to control the lifting distance, a first through hole and a second through hole are respectively formed in the side walls of the guide through holes of the third guide block 19 and the fourth guide block 33, corresponding through holes are also formed in the positions, corresponding to the first through hole and the second through hole, of the insulating plate 12, and a first positioning nail 13 and a second positioning nail 34 are inserted into the first through hole and the second through hole for positioning.

It should be noted that the embodiment of the connecting rail assembly is not limited to this embodiment, and for example, each positioning/guiding block and the end of the supporting rod may be connected together by a separate connecting rod and nuts may be fitted to both ends of the connecting rod. By adopting the embodiment of the connecting cross rod assembly provided by the embodiment, the stability of the device can be further increased.

In order to control the lifting mechanism to lift and lower to drive the clamping mechanism to move up and down, the center of the insulating plate 12 is provided with a tapping blind hole and a handle 18 screwed with the tapping blind hole.

Following right the utility model provides a many chucks self-heating oil bath formula piezoceramics polarization device's working process carries out detailed description to further demonstrate the utility model's advantage:

a front binding post and a rear binding post in the device are respectively connected to a positive pole and a negative pole of a high-voltage power supply through high-voltage conducting wires, silicone oil is poured into a polarization box 3, a handle 18 is screwed into a through hole in the center of an insulating plate 12, the handle 18 is pulled upwards to enable a clamping mechanism to be separated from the oil surface, and then a first positioning nail 13 and a second positioning nail 34 are installed to enable the clamping mechanism to be fixed and not to move up and down. And selecting a required clamping head 27 according to a required polarized ceramic sample, respectively assembling the required clamping head 27 on the first double-head screw 17 and the second double-head screw, taking down the insulating base plate 24 on the second conducting block 21, clamping the screw between the nut 25 and the nut 26 on the second double-head screw by using tweezers, pulling the second double-head screw towards the direction of the compression spring 23, simultaneously clamping the piezoelectric ceramic sample required to be polarized to the clamping head 27 on the first double-head screw 17 corresponding to the station by using another tweezers, slowly loosening the clamping head of the clamping screw, and pushing the second double-head screw by using the spring 23 to clamp the piezoelectric ceramic sample required to be polarized between the two clamping heads 27. And (5) removing the first positioning nail 13 and the second positioning nail 34, pressing the handle 18 downwards to the lowest position, and reversely screwing the handle 18 out. And electrifying the logarithmic sensible heat couple 1, and introducing high-voltage electricity into the front binding post and the rear binding post to carry out polarization operation when the temperature reaches the required polarization temperature. And after the polarization is finished, the high-voltage power supply is turned off, the handle 18 is screwed in and pulled upwards, the clamping mechanism is separated from the oil surface, the positioning nail I13 and the positioning nail II 34 are arranged, the clamping mechanism is separated from the oil surface for a certain distance and is fixed, the polarized piezoelectric ceramic sample is clamped by the tweezers, meanwhile, the screw rod between the nut 25 and the nut 26 on the double-head screw rod II is clamped by the other tweezers, the double-head screw rod II is pulled towards the direction of the compression spring 23, the polarized piezoelectric ceramic sample is taken down, and the insulating cushion block of the station is installed by the tweezers.

Wholly speaking, the utility model provides a pair of many chucks self-heating oil bath formula piezoceramics polarization device can design a plurality of stations according to actual demand, cooperate multiple chuck, but the piezoceramics of centre gripping arbitrary shape and size polarizes in room temperature ~250 ℃'s oil bath environment, satisfy different polarization directions, the flexibility and the variety of centre gripping piezoceramics sample have been guaranteed, it is reliable to have the centre gripping, centre gripping scope and clamping-force are adjustable, the loading and unloading sample is easy, the multistation polarizes simultaneously, advantages such as safe in operation and economic high efficiency.

It will be appreciated by those of ordinary skill in the art that the embodiments described herein are intended to assist the reader in understanding the principles of the invention, and it is to be understood that the scope of the invention is not limited to such specific statements and embodiments. Those skilled in the art can make various other specific modifications and combinations based on the teachings of the present invention without departing from the spirit of the invention, and such modifications and combinations are still within the scope of the invention.

Claims (9)

1. The utility model provides a many chucks self-heating oil bath formula piezoceramics polarization device which characterized in that: the multi-chuck self-heating oil bath type piezoelectric ceramic polarization device comprises a polarization box (3) with an opening at the top, a lifting mechanism arranged in the polarization box (3) and a clamping mechanism arranged at the top of the lifting mechanism, wherein a pair of thermocouples (1) are symmetrically inserted in the polarization box (3), and the outer side surface of the polarization box (3) is provided with a grounding terminal (11);

the clamping mechanism comprises an insulating plate (12) fixedly connected with the top of the lifting mechanism, and a first conducting block (14) and a second conducting block (21) which are fixed on the upper surface of the insulating plate (12) in parallel through a positioning screw and a nut, wherein a plurality of through holes are formed in the horizontal direction opposite positions of the first conducting block (14) and the second conducting block (21), and a fixed clamping assembly and a sliding clamping assembly for clamping a sample are respectively arranged in the through holes opposite to the positions on the first conducting block (14) and the second conducting block (21);

the fixed clamping assembly comprises a first clamping rod connected with a first conducting block (14) through hole in a threaded mode, the sliding clamping assembly comprises a second clamping rod which can slide along a second conducting block (21) through hole and has a fixing piece at the tail part, the front end parts of the first clamping rod and the second clamping rod are provided with clamping heads (27) which can be detachably connected, and elastic pieces are sleeved between the clamping heads (27) of the second clamping rod and the side faces of the second conducting block (21).

2. The multi-cartridge self-heating oil bath type piezoceramic polarization device according to claim 1, wherein: the first clamping rod and the second clamping rod are double-threaded screws with nuts assembled at the tail parts, the front end chuck (27) is in threaded connection with the double-threaded screws, and the nuts serve as fixing pieces at the tail parts of the first clamping rods and the second clamping rods.

3. The multi-cartridge self-heating oil bath type piezoceramic polarization device according to claim 2, wherein: two nuts at a certain distance are assembled at the tail parts of the two clamping rods, and a detachable insulating base plate (24) is arranged between the side surface of the second conducting block (21) and the adjacent nut.

4. The multi-cartridge self-heating oil bath type piezoceramic polarization device according to claim 1, wherein: the lifting mechanism comprises a positioning block assembly, a guide block assembly and a support rod assembly;

the positioning block assembly comprises a first positioning block (5), a second positioning block (42) and a third positioning block (4) and a fourth positioning block (41), wherein the first positioning block (5) and the second positioning block (42) are parallelly fixed on one side of the lower surface of the insulating plate (12), and the third positioning block (4) and the fourth positioning block (41) are parallelly arranged on one side of the bottom of the polarization box (3) and correspond to the first positioning block (;

the guide block assembly comprises a first guide block (10) and a second guide block (31) which are parallelly fixed on the other side of the bottom of the polarization box (3), and a third guide block (19) and a fourth guide block (33) which are parallelly arranged on the other side of the lower surface of the insulating plate (12) and correspond to the first guide block (10) and the second guide block (31) in position, wherein guide through holes along the horizontal direction are formed in the first guide block (10), the second guide block (31), the third guide block (19) and the fourth guide block (33);

the supporting rod assembly comprises a first supporting rod (7) arranged between a first positioning block (5) and a first guide block (10) in a crossed mode, a second supporting rod (9) arranged between a third positioning block (4) and a third guide block (19) in a crossed mode, a third supporting rod (38) arranged between a second positioning block (42) and a second guide block (31) in a crossed mode, a fourth supporting rod (36) arranged between a fourth positioning block (41) and a fourth guide block (33), the first supporting rod (7) and the third supporting rod (38) are located on the inner side, and the second supporting rod (9) and the fourth supporting rod (36) are located on the outer side;

the distance between the horizontal projections of the first positioning block (5), the first guide block (10), the third positioning block (4) and the third guide block (19) is the thickness of the supporting rod, and the distance between the horizontal projections of the second positioning block (42), the second guide block (31), the fourth positioning block (41) and the fourth guide block (33) is the thickness of the supporting rod;

the lift mechanism also includes a connecting rail assembly for connecting the end of the support rod and the locating/guide block.

5. The multi-cartridge self-heating oil bath type piezoceramic polarization device according to claim 4, wherein: the connecting cross rod component comprises a first cross rod (43), a second cross rod (28), a third cross rod (30) and a fourth cross rod (44) which are respectively provided with nuts at two ends, wherein the first cross rod (43) sequentially penetrates through a third positioning block (4), a low end part of a second supporting rod (9), a low end part of a fourth supporting rod (36) and a fourth positioning block (41), the second cross rod (28) sequentially penetrates through a first positioning block (5), a high end part of a first supporting rod (7), a high end part of a third supporting rod (38) and a second positioning block (42), the third cross rod (30) sequentially penetrates through a guide through hole of a third guide block (19), a high end part of the second supporting rod (9), a high end part of the fourth supporting rod (36) and a guide through hole of a, the cross rod four (44) sequentially penetrates through a guide through hole of the guide block one (10), a lower end part of the support rod one (7), a lower end part of the support rod three (38) and a guide through hole of the guide block two (31).

6. The multi-cartridge self-heating oil bath type piezoceramic polarization device according to claim 5, wherein: the connecting cross rod assembly further comprises a cross rod five (39), the cross position of the support rod one (7) and the support rod two (9) and the cross position of the support rod three (38) and the support rod four (36) are sequentially penetrated through the cross rod five (39), and nuts are respectively assembled at two ends of the cross rod five (39) for fixing.

7. The multi-cartridge self-heating oil bath type piezoceramic polarization device according to claim 1, wherein: and a handle (18) which is used for controlling the lifting mechanism to lift so as to drive the clamping mechanism to move up and down and is detachably connected is also arranged on the insulating plate (12).

8. The multi-cartridge self-heating oil bath type piezoceramic polarization device according to claim 4, wherein: through holes are formed in the vertical direction and the corresponding positions of the insulating plate (12) on the upper side walls of the three guide blocks (19) and the four guide blocks (33) for guiding the through holes, and positioning nails are inserted in the through holes to control the lifting distance.

9. The multi-cartridge self-heating oil bath type piezoceramic polarization device according to claim 1, wherein: and clamping blocks (2) for inserting the thermocouples (1) are arranged on the left side and the right side of the polarization box (3).

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