CN209831394U

CN209831394U - Resistor substrate clamp

Info

Publication number: CN209831394U
Application number: CN201920301429.2U
Authority: CN
Inventors: 许根夫; 谢永良; 陆志华
Original assignee: Shenzhen JPT Optoelectronics Co Ltd
Current assignee: Shenzhen JPT Optoelectronics Co Ltd
Priority date: 2019-03-11
Filing date: 2019-03-11
Publication date: 2019-12-24
Anticipated expiration: 2029-03-11

Abstract

A resistive substrate fixture, comprising: the bearing mechanism, the positioning mechanism connected with the bearing mechanism and the laminating mechanism connected with the bearing mechanism are arranged on the bearing mechanism; the bearing mechanism comprises a carrier and a panel arranged on the carrier; the panel comprises a main bearing part; the panel is connected with a plurality of directional pieces corresponding to the edges of the main bearing part; the positioning mechanism is used for pushing the resistance substrate so as to enable the resistance substrate to be attached to the orienting piece; the attaching mechanism comprises at least two side pressure components which are arranged corresponding to the panel; the side pressure assembly comprises a guide block connected with the bearing mechanism, a side connecting block connected with the guide block in a sliding manner, a pressing plate connected with the side connecting block, and a first elastic piece connected with the bearing mechanism; the pressing plate is arranged corresponding to the edge of the main bearing part; the first elastic member is also connected to the side block. The pressing plate is pressed to the edge of the main bearing part through the tension of the first elastic piece, and the edge of the resistance substrate is attached to the main bearing part through the pressing plate, so that the resistance substrate is well attached to the panel, the deviation caused by bending of the resistance substrate is reduced, and the resistance repairing quality is improved.

Description

Resistor substrate clamp

Technical Field

The utility model relates to a resistance repair hinders the technique, especially relates to a resistance substrate anchor clamps.

Background

With the development of electronic material technology, resistive elements tend to be miniaturized, and some types of resistors are manufactured by evaporating a material with a certain resistivity on the surface of an insulating material by a similar evaporation method, and generally, the insulating material commonly used for such resistors is a ceramic substrate. Because the miniaturization requirement of resistance, the resistance base plate is thinner and thinner, however, under the condition that resistance base plate thickness is undersized, certain bending is produced to the easy production of resistance base plate, leads to repairing the unable smooth surface of laminating to anchor clamps of in-process base plate, because the resistance volume on the resistance base plate is less, the slight bending of base plate can bring the deviation that has great influence for the location of resistance to influence and repair and hinder the quality.

SUMMERY OF THE UTILITY MODEL

Accordingly, it is desirable to provide a resistor substrate fixture for solving the problem that the substrate cannot be smoothly attached to the surface of the fixture during the trimming process.

A resistive substrate fixture, comprising: the bearing mechanism, the positioning mechanism connected with the bearing mechanism and the attaching mechanism connected with the bearing mechanism; the carrying mechanism comprises a carrier and a panel arranged on the carrier; the panel comprises a main bearing part; the panel is connected with a plurality of directional pieces corresponding to the edges of the main bearing part; the positioning mechanism is used for pushing the resistor substrate so as to enable the resistor substrate to be attached to the orienting piece; the attaching mechanism comprises at least two side pressure components which are arranged corresponding to the panel; the side pressure assembly comprises a guide block connected with the bearing mechanism, a side connecting block connected with the guide block in a sliding manner, a pressing plate connected with the side connecting block, and a first elastic piece connected with the bearing mechanism; the pressing plate is arranged corresponding to the edge of the main bearing part; the first elastic member is also connected to the side block.

The resistor substrate clamp pushes the resistor substrate through the positioning mechanism, and the resistor substrate can be positioned after the edge of the resistor substrate is attached to the orienting piece; the clamp plate follows the relative guide block of side joint piece and slides, and the pulling force of first elastic component makes the clamp plate press to the edge of main portion of holding, and the clamp plate makes the edge laminating of resistance substrate to main portion of holding to make resistance substrate and panel laminate well, reduce the crooked deviation that brings of resistance substrate, improve and repair and hinder the quality.

In one embodiment, the side connecting block is sleeved on the guide block, a guide groove is formed in the outer side of the guide block, a guide piece corresponding to the guide groove is connected to the inner side of the side connecting block, the guide piece is accommodated in the guide groove, and the number of the guide pieces accommodated in the same guide groove is at least two.

In one embodiment, the extending direction of the guide groove is obliquely arranged relative to the surface of the panel.

In one embodiment, the lateral pressure assembly further comprises an outward pushing cylinder connected with the bearing mechanism and a bearing plate connected with the lateral connecting block; the main body of the outward pushing cylinder is fixedly connected with the carrier, and the push bearing plate is arranged corresponding to a piston rod of the outward pushing cylinder; one end of the first elastic piece is connected with the carrier, and the other end of the first elastic piece is connected with the bearing plate.

In one embodiment, the inner side of the pressure plate is provided with an inner groove, and the inner groove is arranged corresponding to the edge of the main bearing part.

In one embodiment, the orientation members are distributed along a right angle; the positioning mechanism comprises a positioning cylinder arranged on the carrier, an adapter plate arranged on the positioning cylinder, a sliding seat arranged on the adapter plate, a plurality of pushing plate parts arranged on the sliding seat and a second elastic part connected with the adapter plate; the positioning cylinder drives the adapter plate to move along the direction of the opening of the directional piece at the right angle, the pushing plate piece is arranged in the panel in a penetrating manner, the pushing plate piece is arranged corresponding to the edge of the main bearing part, and the pushing plate piece is arranged opposite to the right angle of the directional piece at the right angle; the sliding seat is rotatably connected with the adapter plate; and two ends of the second elastic piece are respectively connected with the adapter plate and the carrier frame.

In one embodiment, the adapter plate is provided with a convex column; the sliding seat is provided with a sliding hole, and the convex column is arranged in the sliding hole in a penetrating way; the sliding seat is provided with a support tube part at two sides of the sliding hole, and the pushing plate part is arranged on the support tube part.

In one embodiment, the positioning mechanism further comprises a balance bearing piece sleeved on the convex column; the balance bearing member is accommodated in the slider.

In one embodiment, the device further comprises a direction adjusting mechanism; the bearing mechanism also comprises a base and a main bearing piece connected with the base; the carrier is accommodated in the base; the base comprises a lower bottom plate and a side wall connected with the lower bottom plate; the direction adjusting mechanism comprises a motor connected with the side wall, a wheel disc connected with the motor, a ball piece installed on the carrier and a third elastic piece connected with the carrier; the carrier is rotationally connected with the lower bottom plate through the main bearing piece; the ball piece is arranged corresponding to the wheel disc, and the side surface of the wheel disc corresponding to the ball piece is obliquely arranged relative to the output shaft of the motor; the third elastic piece enables the ball piece to be abutted against the side face of the wheel disc.

In one embodiment, the panel is provided with air extraction grooves on the main bearing part, and the air extraction grooves are uniformly distributed on the main bearing part; one side of the panel is provided with an air outlet; and the panel is provided with a through flow channel communicated with the air exhaust groove and the air outlet hole.

Drawings

Fig. 1 is a schematic perspective view of a resistor substrate fixture according to a preferred embodiment of the present invention;

FIG. 2 is a perspective view of the resistor substrate fixture of FIG. 1 at another angle;

FIG. 3 is an exploded view of the perspective view of FIG. 1;

FIG. 4 is a perspective view of the side pressure assembly;

FIG. 5 is an exploded view of the side pressure assembly;

FIG. 6 is an exploded view of the side pressure assembly at another angle;

FIG. 7 is an exploded view of the positioning mechanism of FIG. 3;

FIG. 8 is a perspective view of the resistor substrate fixture with the base and the transfer plate added;

FIG. 9 is an exploded view of the resistor substrate fixture of FIG. 8 after separation of the transfer plate;

fig. 10 is an exploded view of the resistor substrate holder shown in fig. 9 after the base is separated.

Detailed Description

In order to facilitate understanding of the present invention, the present invention will be described more fully below. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

Referring to fig. 1 to 10, a resistor substrate fixture 100 according to a preferred embodiment of the present invention is used for positioning and clamping a resistor substrate to perform a trimming process. The resistor substrate fixture 100 comprises a bearing mechanism 20, a positioning mechanism 30 connected with the bearing mechanism 20, and a bonding mechanism connected with the bearing mechanism 20; the carrying mechanism 20 comprises a carrier 21 and a panel 22 mounted on the carrier 21; the panel 22 includes a main support portion 222; a plurality of directional pieces 221 corresponding to the edges of the main bearing part 222 are connected on the panel 22; the positioning mechanism 30 is used for pushing the resistor substrate to adhere the resistor substrate to the orienting member 221; the attaching mechanism comprises at least two side pressure components 50 which are arranged corresponding to the panel 22; the side pressure assembly 50 comprises a guide block 51 connected with the bearing mechanism 20, a side block 52 connected with the guide block 51 in a sliding way, a pressure plate 53 connected with the side block 52, and a first elastic piece 54 connected with the bearing mechanism 20; the pressing plate 53 is arranged corresponding to the edge of the main bearing part 222; the first elastic member 54 is also connected to the side block 52.

The resistor substrate is pushed by the positioning mechanism 30, and the resistor substrate can be positioned after the edge of the resistor substrate is attached to the orienting piece 221; the pressing plate 53 slides relative to the guide block 51 along with the side connecting block 52, the pressing plate 53 is pressed to the edge of the main bearing part 222 by the tensile force of the first elastic piece 54, and the edge of the resistance substrate is attached to the main bearing part 222 by the pressing plate 53, so that the resistance substrate is well attached to the panel 22, the deviation caused by bending of the resistance substrate is reduced, and the resistance repairing quality is improved.

Referring to fig. 4 to 6, in one embodiment, in order to realize the sliding connection between the side connection block 52 and the guide block 51 and improve the compactness of the side pressure assembly 50, the side connection block 52 is sleeved on the guide block 51, a guide groove 511 is formed on the outer side of the guide block 51, a guide piece 521 corresponding to the guide groove 511 is connected to the inner side of the side connection block 52, the guide piece 521 is accommodated in the guide groove 511, and the number of the guide pieces 521 accommodated in the same guide groove 511 is at least two; the sliding connection between the side connecting block 52 and the guide block 51 is realized through the matching of the guide piece 521 and the guide groove 511; further, by installing a bearing member inside the pin-shaped guide 521, friction between the guide 521 and the guide block 51 can be reduced; specifically, the guide block 51 is fixedly connected with the carriage 21; in other embodiments, the guide block 51 and the side block 52 may be connected by a slide rail regardless of the compactness.

In one embodiment, in order to provide a force component perpendicular to the surface of the panel 22 to the resistor substrate by the pressing plate 53 and avoid the influence of the pressing plate 53 on the loading and unloading of the resistor substrate after leaving the surface of the panel 22, the extending direction of the guide slot 511 is inclined relative to the surface of the panel 22; therefore, the pressing plate 53 is moved away from the surface of the panel 22 in the vertical direction and is moved away from the edge of the main supporting portion 222 in the horizontal direction, thereby avoiding the influence on the taking and placing of the resistor substrate.

In one embodiment, after the trimming process on the resistive substrate is completed, in order to automatically separate the pressing plate 53 from the panel 22, the lateral pressing assembly 50 further includes an outward pushing cylinder 55 connected to the supporting mechanism 20, and a pushing plate 56 connected to the lateral connecting block 52; the main body of the push-out cylinder 55 is fixedly connected with the carrier 21, and the push bearing plate 56 is arranged corresponding to the piston rod of the push-out cylinder 55; one end of the first elastic piece 54 is connected with the carrier 21, and the other end of the first elastic piece 54 is connected with the bearing plate 56; under the contraction state of the outward pushing air cylinder 55, under the action of the pulling force of the first elastic piece 54, the pressing plate 53 contracts towards the edge of the main bearing part 222, so that the edge of the resistance substrate is well jointed with the edge of the main bearing part 222; in the state that the outward pushing cylinder 55 is extended, the piston rod of the outward pushing cylinder 55 pushes the bearing plate 56, so that the pressure plate 53 leaves the edge of the main bearing part 222; in order to facilitate the connection between the first elastic member 54 and the supporting plate 56, the outer end of the first elastic member 54 is provided with a bayonet lock, and the bayonet lock is located at the outer side of the supporting plate 56.

In one embodiment, to improve compactness and ensure mechanical strength of the pressure plate 53, the inner side of the pressure plate 53 is provided with an inner groove 531, and the inner groove 531 is arranged corresponding to the edge of the main bearing part 222; when the pressing plate 53 is contracted, the edge of the resistor substrate and the edge of the main bearing part 222 are just accommodated in the inner groove 531; by providing the inner groove 531, the vertical extension length of the side joint block 52 can be reduced, and the compactness can be improved; since the portion of the pressure plate 53 above the inner groove 531 abuts against the resistor substrate, the length of the horizontal extension of the inner groove 531 is short, the thickness of the entire pressure plate 53 is kept constant, and the mechanical strength of the pressure plate 53 is ensured.

Referring to fig. 7, in one embodiment, in order to push the resistor substrate by the positioning mechanism 30 and make the edge of the resistor substrate adhere to the orientation member 221, the orientation member 221 is distributed along a right angle; the positioning mechanism 30 comprises a positioning cylinder 31 mounted on the carrier 21, an adapter plate 32 mounted on the positioning cylinder 31, a sliding seat 33 mounted on the adapter plate 32, a plurality of pushing plate members 34 mounted on the sliding seat 33, and a second elastic member 35 connected with the adapter plate 32; the positioning cylinder 31 drives the adapter plate 32 to move along the direction of the opening of the directional piece 221 at right angle, the push plate piece 34 is arranged in the panel 22 in a penetrating way, the push plate piece 34 is arranged corresponding to the edge of the main bearing part 222, and the push plate piece 34 is arranged opposite to the right angle of the directional piece 221; the sliding seat 33 is rotatably connected with the adapter plate 32; two ends of the second elastic piece 35 are respectively connected with the adapter plate 32 and the carrier 21; when the positioning cylinder 31 is extended, the push plate member 34 moves away from the directional member 221, so that the resistive substrate can be conveniently taken and placed on the panel 22; when the positioning cylinder 31 contracts, the adapter plate 32 and the pushing plate 34 move close to the orienting member 221, and push the resistor substrate, so that the resistor substrate is attached to the orienting member 221.

In one embodiment, in order to balance the acting force of the pushing plate 34 on the resistance substrate, the convex pillar 321 is disposed on the adapter plate 32; the sliding base 33 is provided with a sliding hole 331, and the convex column 321 is arranged in the sliding hole 331 in a penetrating way; the slide base 33 is provided with a support cylinder part 332 on both sides of the slide hole 331, and the push plate member 34 is mounted on the support cylinder part 332; thereby providing pushing to the resistance substrate from different directions through the pushing plate member 34 on the two support cylinder portions 332, so that the resistance substrate can be attached to the orientation member 221 in different directions; since the sliding base 33 is rotatably connected with the adapter plate 32 through the sliding hole 331, the acting forces of the pushing plate 34 in different directions can be balanced, so that the resistor substrate can be better attached to the orienting member 221.

In one embodiment, to reduce the friction between the sliding seat 33 and the adapter plate 32, the positioning mechanism 30 further includes a balance bearing member 36 disposed on the protruding pillar 321; the balance bearing member 36 is accommodated in the slider 33.

Referring to fig. 10, in one embodiment, in order to eliminate the angle deviation of the resistor substrate in the horizontal direction to improve the resistance trimming precision, the resistor substrate fixture 100 further includes a direction adjustment mechanism 60; the bearing mechanism 20 further comprises a base 23 and a main bearing component 24 connected with the base 23; the carrier 21 is accommodated in the base 23; the base 23 includes a bottom plate 231 and a sidewall 232 connected to the bottom plate 231; the direction adjusting mechanism 60 comprises a motor 61 connected with the side wall 232, a wheel disc 62 connected with an output shaft of the motor 61, a ball piece 63 arranged on the carrier 21 and a third elastic piece 64 connected with the carrier 21; the carrier 21 is rotatably connected with the lower bottom plate 231 through a main bearing piece 24; the ball piece 63 is arranged corresponding to the wheel disc 62, and the side surface of the wheel disc 62 corresponding to the ball piece 63 is obliquely arranged relative to the output shaft of the motor 61; the third elastic member 64 makes the ball member 63 abut against the side surface of the wheel disc 62; because the carrier 21 is rotatably connected with the lower base plate 231 through the main bearing piece 24, and the side surface of the wheel disc 62 corresponding to the ball piece 63 is obliquely arranged relative to the output shaft of the motor 61, when the motor 61 drives the wheel disc 62 to rotate, the distance between the ball piece 63 and the main body of the motor 61 is changed, so that the angle of the panel 22 relative to the base 23 is accurately adjusted; specifically, the third elastic member 64 is a spring, and two ends of the third elastic member 64 are connected to the carrier 21 and the base 23, respectively.

Referring to fig. 8 and 9, in one embodiment, since the predetermined direction of the trimming laser beam is perpendicular to the horizontal direction, in order to adjust the levelness of the panel 22 and ensure the trimming accuracy, the supporting mechanism 20 further includes a transferring plate 25 and a plurality of horizontal adjusting components 26 connected to the transferring plate 25; the horizontal adjustment assembly 26 comprises a hollow screw 261 which is arranged on the lower bottom plate 231 in a penetrating way, and an inner screw 262 which is arranged in the hollow screw 261 in a penetrating way; the base 23 is arranged above the transfer plate 25, the hollow screw 261 is in threaded connection with the base 23, and the inner screw 262 is in threaded connection with the transfer plate 25; specifically, the horizontal adjusting assemblies 26 are uniformly distributed on the corners of the lower base plate 231, before the internal screws 262 are tightened, the distances between different parts of the base 23 and the transfer plate 25 are adjusted by rotating the hollow screws 261 to adjust the levelness of the panel 22, after the adjustment of the hollow screws 261 is completed, the internal screws 262 are tightened under the condition that the angles of the hollow screws 261 are not changed, so that the positions and the angles of the hollow screws 261 can be locked, and the levelness adjustment of the panel 22 is completed.

In one embodiment, in order to improve the flatness of the resistor substrate and prevent the resistor substrate from sliding relative to the panel 22 during the resistor repairing process, the panel 22 is provided with air exhaust grooves 223 on the main bearing part 222, and the air exhaust grooves 223 are uniformly distributed on the main bearing part 222; one side of the panel 22 is provided with an air outlet 224; a through flow channel communicated with the air exhaust groove 223 and the air outlet 224 is arranged on the panel 22; the adsorption of each part of the bottom surface of the resistor substrate by the air exhaust grooves 223 enables the resistor substrate to be better attached to the panel 22, and improves the flatness of the resistor substrate.

Specifically, the main bearing portion 222 is disposed corresponding to the resistor substrate, and in order to reduce friction between the resistor substrate and the orientation member 221 during the positioning process, the orientation member 221 is a bearing, and in other embodiments, the orientation member 221 may be a pin.

In order to limit the stroke of the side connecting block 52 and avoid the guide 521 from separating from the guide groove 511, the panel 22 is provided with a through groove 225 on the outer side of the main bearing part 222, the side connecting block 52 is arranged in the corresponding through groove 225 in a penetrating way, and the width of the through groove 225 corresponds to the moving range of the side connecting block 52; due to the limitation of the through groove 225, the side block 52 is prevented from moving too far, so that the guide piece 521 is prevented from being separated from the guide groove 511.

In the present embodiment, the two side pressing assemblies 50 are oppositely arranged at both sides of the main bearing part 222, and in other embodiments, a plurality of side pressing assemblies 50 can be arranged to improve the flatness of the resistance substrate; further, in order to prevent the guide member 221 or the push plate member 34 from affecting the movement of the pressure plate 53, a groove 532 corresponding to the guide member 221 or the push plate member 34 is provided on the pressure plate 53.

Referring to fig. 6, further, in order to conveniently confirm whether the pressing plate 53 is in the folded state, the attaching mechanism further includes a folding detection assembly 70 connected to the side pressing assembly 50, and the folding detection assembly 70 includes a blocking piece 71 connected to the side connecting block 52 and a sensor 72 connected to the carrier 21; the blocking piece 71 is arranged corresponding to the inductor 72.

In the embodiment, the resistor substrate is pushed by the positioning mechanism, and the resistor substrate can be positioned after the edge of the resistor substrate is attached to the orienting piece; the clamp plate follows the relative guide block of side joint piece and slides, and the pulling force of first elastic component makes the clamp plate press to the edge of main portion of holding, and the clamp plate makes the edge laminating of resistance substrate to main portion of holding to make resistance substrate and panel laminate well, reduce the crooked deviation that brings of resistance substrate, improve and repair and hinder the quality.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A resistive substrate fixture, comprising: the bearing mechanism, the positioning mechanism connected with the bearing mechanism and the attaching mechanism connected with the bearing mechanism; the carrying mechanism comprises a carrier and a panel arranged on the carrier; the panel comprises a main bearing part; the panel is connected with a plurality of directional pieces corresponding to the edges of the main bearing part; the positioning mechanism is used for pushing the resistor substrate so as to enable the resistor substrate to be attached to the orienting piece; the attaching mechanism comprises at least two side pressure components which are arranged corresponding to the panel; the side pressure assembly comprises a guide block connected with the bearing mechanism, a side connecting block connected with the guide block in a sliding manner, a pressing plate connected with the side connecting block, and a first elastic piece connected with the bearing mechanism; the pressing plate is arranged corresponding to the edge of the main bearing part; the first elastic member is also connected to the side block.

2. The resistor substrate clamp according to claim 1, wherein the side connecting block is sleeved on the guide block, a guide groove is formed in an outer side of the guide block, a guide member corresponding to the guide groove is connected to an inner side of the side connecting block, the guide member is accommodated in the guide groove, and the number of the guide members accommodated in the same guide groove is at least two.

3. The resistive substrate fixture of claim 2, wherein the channels extend in a direction that is oblique to the surface of the faceplate.

4. The resistive substrate fixture of claim 3, wherein the lateral compression assembly further comprises an out-pushing cylinder coupled to the load bearing mechanism and a push bearing plate coupled to the lateral abutment block; the main body of the outward pushing cylinder is fixedly connected with the carrier, and the push bearing plate is arranged corresponding to a piston rod of the outward pushing cylinder; one end of the first elastic piece is connected with the carrier, and the other end of the first elastic piece is connected with the bearing plate.

5. The resistive substrate fixture of claim 1, wherein the inner side of the pressure plate defines inner grooves corresponding to edges of the main support portion.

6. The resistive substrate fixture of claim 1, wherein the orientation features are distributed along a right angle; the positioning mechanism comprises a positioning cylinder arranged on the carrier, an adapter plate arranged on the positioning cylinder, a sliding seat arranged on the adapter plate, a plurality of pushing plate parts arranged on the sliding seat and a second elastic part connected with the adapter plate; the positioning cylinder drives the adapter plate to move along the direction of the opening of the directional piece at the right angle, the pushing plate piece is arranged in the panel in a penetrating manner, the pushing plate piece is arranged corresponding to the edge of the main bearing part, and the pushing plate piece is arranged opposite to the right angle of the directional piece at the right angle; the sliding seat is rotatably connected with the adapter plate; and two ends of the second elastic piece are respectively connected with the adapter plate and the carrier frame.

7. The resistive substrate fixture of claim 6, wherein the interposer has posts; the sliding seat is provided with a sliding hole, and the convex column is arranged in the sliding hole in a penetrating way; the sliding seat is provided with a support tube part at two sides of the sliding hole, and the pushing plate part is arranged on the support tube part.

8. The resistive substrate fixture of claim 7, wherein the positioning mechanism further comprises a balance bearing member disposed over the post; the balance bearing member is accommodated in the slider.

9. The resistive substrate fixture of claim 1, further comprising a direction adjustment mechanism; the bearing mechanism also comprises a base and a main bearing piece connected with the base; the carrier is accommodated in the base; the base comprises a lower bottom plate and a side wall connected with the lower bottom plate; the direction adjusting mechanism comprises a motor connected with the side wall, a wheel disc connected with the motor, a ball piece installed on the carrier and a third elastic piece connected with the carrier; the carrier is rotationally connected with the lower bottom plate through the main bearing piece; the ball piece is arranged corresponding to the wheel disc, and the side surface of the wheel disc corresponding to the ball piece is obliquely arranged relative to the output shaft of the motor; the third elastic piece enables the ball piece to be abutted against the side face of the wheel disc.

10. The resistive substrate fixture of claim 1, wherein the faceplate has air extraction grooves on the main bearing portion, the air extraction grooves being evenly distributed on the main bearing portion; one side of the panel is provided with an air outlet; and the panel is provided with a through flow channel communicated with the air exhaust groove and the air outlet hole.