CN115383632B - Thermal polishing device suitable for invisible appliance - Google Patents

Abstract

The application discloses a thermal polishing device suitable for an invisible appliance, which comprises a sand blasting chamber, a sand blasting assembly, a hot melting assembly and a conveying assembly, wherein the conveying assembly is used for conveying the invisible appliance into the sand blasting chamber and conveying the invisible appliance out of the sand blasting chamber; the clamping assembly is used for clamping the invisible appliance; the sand blasting assembly comprises a sand blasting gun head arranged inside a sand blasting chamber; the hot melting assembly comprises a supporting piece arranged in the sand blasting chamber, a heating piece and a fan are fixed on the supporting piece, and the fan is arranged towards the heating piece. The utility model provides a thermal polishing device promotes stealthy appliance deburring efficiency, promotes surface smoothness and planarization.

Description

Thermal polishing device suitable for invisible appliance

Technical Field

The application relates to the technical field of appliances, in particular to a thermal polishing device suitable for an invisible appliance.

Background

And (3) placing the three-dimensional molded tooth model into a dental film pressing machine for hot pressing and film pressing, and separating and cutting the film after the film is cooled to obtain the invisible appliance.

The root of the invisible appliance can generate burrs when the invisible appliance is cut, the invisible appliance is not suitable for being worn in the mouth of a patient, and sanding is generally required to be carried out by sand paper or a polishing wheel.

However, generally, after collecting the tooth model data of a plurality of patients, the hidden appliance is produced in a centralized way, and then polished one by one, which is easy to cause low efficiency, and moreover, the manual polishing is difficult to accurately grasp the quality control standard, and the hidden appliance is also likely to be scratched or damaged in the burr polishing process, so that the smoothness and flatness of the surface of the hidden appliance are reduced.

Disclosure of Invention

In order to improve the deburring efficiency of the invisible appliance, the control level of the whole product is improved, and then the smoothness and flatness of the surface of the invisible appliance are improved, the application provides a thermal polishing device suitable for the invisible appliance.

The application provides a thermal polishing device suitable for invisible appliance, adopts following technical scheme:

a thermal polishing device suitable for an invisible appliance, which comprises a sand blasting chamber, a sand blasting assembly, a hot melting assembly and a conveying assembly, wherein the conveying assembly is used for conveying the invisible appliance into the sand blasting chamber and conveying the invisible appliance out of the sand blasting chamber;

the clamping assembly is used for clamping the invisible appliance;

the sand blasting assembly comprises a sand blasting gun head arranged inside a sand blasting chamber;

the hot melting assembly comprises a supporting piece arranged in the sand blasting chamber, a heating piece and a fan are fixed on the supporting piece, and the fan is arranged towards the heating piece.

By adopting the technical scheme, after the clamping assembly clamps the invisible appliance, the clamping assembly is conveyed into the sand blasting chamber by the conveying assembly, the sand blasting gun head is started to carry out sand blasting operation on the invisible appliance, burrs on the invisible appliance are removed, and the processing efficiency is improved; after the invisible appliance is sandblasted, the heating element is started to heat, and the fan generates wind power to transfer the heat generated by the heating element to the invisible appliance so as to soften the frosted and tiny burrs on the surface of the invisible appliance after sandblasting and further improve the smoothness of the surface; meanwhile, the sand blasting material remained in the clamping assembly can be blown away, so that the product quality is improved.

Optionally, the clamping assembly includes an upper die, a lower die, and a substrate;

the substrate is arranged on the conveying assembly, and the lower die is connected with the substrate; a cavity for placing the invisible appliance is formed between the upper die and the lower die;

the two ends of the upper die are in one-to-one correspondence with the two ends of the lower die, the end parts of the upper die are hinged with the end parts of the lower die, and torsion springs are sleeved on the hinge shafts.

Through adopting above-mentioned technical scheme, separate upper die and lower mould and put into the die cavity with stealthy appliance, make upper die and lower mould clamp stealthy appliance under the elasticity effect of torsional spring, when a base plate connects a plurality of lower moulds, can once process a plurality of stealthy appliances, promote machining efficiency.

Optionally, the conveying assembly includes a conveyor belt penetrating the sandblasting booth, the conveyor belt passing through the sandblasting booth from one side of the sandblasting booth and extending to the other side of the sandblasting booth, the substrate being located on the conveyor belt.

By adopting the technical scheme, after the upper die and the lower die clamp the invisible appliance, the base plate is placed on the conveying belt, and the conveying belt conveys the base plate into the sand blasting room so as to carry out sand blasting operation on the invisible appliance.

Optionally, the blast room comprises a housing and a moving assembly disposed within the housing; the moving assembly comprises a supporting frame arranged on the inner wall of the shell, and the sand blasting gun head is arranged on the supporting frame.

Through adopting above-mentioned technical scheme, the sandblast rifle head sets up on the support frame, and the support frame can provide holding power to the sandblast rifle head, when setting up a plurality of sandblast rifle heads on the support frame, can promote sandblast efficiency, also can promote the homogeneity of sandblast to promote whole article accuse quality.

Optionally, two screw rods are arranged on the support frame, and the two screw rods are penetrated and connected with a sliding block in a threaded manner;

a first connecting rod is arranged between the two sliding blocks, two ends of the first connecting rod are respectively connected with the two sliding blocks, and the sand blasting gun head is connected with the first connecting rod.

Through adopting above-mentioned technical scheme, the head rod provides holding power to the sandblast rifle head, because slider and lead screw threaded connection, the slider can follow the axis direction reciprocating sliding of lead screw to drive sandblast rifle head reciprocating motion, realize the even sandblast to stealthy appliance, with the quality is controlled to the promotion whole article.

Optionally, a second connecting rod is further arranged between the two sliding blocks, two ends of the second connecting rod are respectively connected with the two sliding blocks, and the supporting piece is arranged on the second connecting rod.

Through adopting above-mentioned technical scheme, when the slider removes, drive the second connecting rod and remove together to drive hot melt subassembly reciprocating motion, heat the stealthy appliance after the sandblast, with the tiny burr of getting rid of, also can make stealthy appliance surface become smoother because of the dull polish surface that the sandblast formed simultaneously, thereby promote product quality.

Optionally, be provided with the extensible member that is used for driving support frame and base plate butt in the sandblast room, the extensible member is connected with the support frame.

Through adopting above-mentioned technical scheme, when the base plate was conveyed to the support frame below by the conveyer belt, the extension piece made the support frame move downwards until with base plate butt to press from both sides tight base plate, reduce because of the circumstances that leads to the base plate to take place to rock or shift in the sandblast process, promote sandblast stability, thereby promote the quality of polishing.

Optionally, the conveying assembly comprises a conveying chain, a supporting rod is connected to the conveying chain, and the substrate is located on the supporting rod.

Through adopting above-mentioned technical scheme, the bracing piece is driven by the conveying chain, places the base plate on the bracing piece, can convey the base plate to processing in the sandblast room, owing to there is the clearance between the bracing piece, and the sand blasting material can be followed the clearance whereabouts between the bracing piece, is convenient for the collection of sand blasting material, is favorable to the cyclic utilization of sand blasting material.

Optionally, a sand supply assembly is arranged on the shell, the sand supply assembly comprises a sand storage box, the sand storage box is positioned at the bottom of the shell, and the bottom of the shell is communicated with the top of the sand storage box;

the sand supply assembly further comprises a sand spraying pump and a conveying pipe; the sand-blasting device is characterized in that a feeding port of the sand-blasting pump is communicated with the sand storage box, a discharging port of the sand-blasting pump is connected with one end of a conveying pipe, and the other end of the conveying pipe is connected with a sand-blasting gun head.

Through adopting above-mentioned technical scheme, the sand blasting material is collected in storing up the sand box after the burring, is carried to the sand blasting rifle head through the conveyer pipe by sand blasting pump suction sand blasting material again, spouts by the sand blasting rifle head again to realize the cyclic utilization of sand blasting material.

Optionally, a filter plate is arranged between the shell and the sand storage box, and the filter plate is detachably connected with the sand storage box.

Through adopting above-mentioned technical scheme, the heat that heating member and fan transmitted makes burr piece melt or sintering, and the diameter of the impurity granule that forms is great to filtered by the filter plate, promote cyclic utilization's sand blasting material's purity, and then promote cyclic sand blasting material's processingquality.

In summary, the present application includes at least one of the following beneficial effects:

1. after the clamping assembly clamps the invisible appliance, the clamping assembly is conveyed into a sand blasting chamber by the conveying assembly, and burrs of the invisible appliance are removed by the sand blasting assembly, so that the processing efficiency is improved; after the sand blasting, the hot melting assembly is started to soften the frosted and tiny burrs on the surface of the invisible appliance after the sand blasting, and meanwhile, sand blasting materials remained on the clamping assembly can be blown away, so that the smoothness of the surface is further improved;

2. the telescopic piece can enable the support frame to move downwards until the support frame is abutted against the substrate, so that the substrate is clamped, the condition that the substrate shakes or shifts is reduced, the sand blasting stability is improved, and the polishing quality is improved;

3. the sliding block can drive the sand blasting assembly and the hot melting assembly to reciprocate, so that the invisible appliance is uniformly processed, and the overall quality is improved.

Drawings

FIG. 1 is a schematic view of the overall structure of embodiment 1 of the present application;

FIG. 2 is a schematic illustration of a blast room removal unit according to example 1 of the present application;

FIG. 3 is a schematic view showing the internal structure of a blasting chamber in example 1 of the present application;

FIG. 4 is an exploded view of the clamping assembly of embodiment 1 of the present application;

FIG. 5 is an exploded view of the hot melt assembly of example 1 of the present application;

FIG. 6 is a schematic overall structure of embodiment 2 of the present application;

fig. 7 is a partial schematic view showing a transfer assembly and a clamping assembly according to embodiment 2 of the present application.

Reference numerals illustrate: 1. a blasting chamber; 11. a housing; 12. a moving assembly; 121. a support frame; 122. a screw rod; 123. a slide block; 124. a first connecting rod; 125. a telescoping member; 126. a second connecting rod; 2. a transfer assembly; 21. a conveyor belt; 22. a conveyor chain; 23. a support rod; 3. a clamping assembly; 31. an upper die; 32. a lower die; 321. a cavity; 33. a torsion spring; 34. a substrate; 35. a handle; 4. a sand blasting assembly; 41. a sandblasting gun head; 42. a sand separating box; 5. a hot melt assembly; 51. a heating member; 52. a fan; 53. a support; 531. a connecting cylinder; 6. a sand supply assembly; 61. a sand storage box; 62. a sand-blasting pump; 63. a delivery tube; 64. a filter plate; 65. a scraper; 7. invisible appliance; 71. root.

Detailed Description

The present application is described in further detail below in conjunction with figures 1-7.

Example 1:

embodiment 1 of the application discloses a thermal polishing device suitable for an invisible appliance.

Referring to fig. 1 and 2, a thermal polishing device suitable for use in a concealed appliance includes a sandblasting booth 1, a delivery assembly 2, a clamping assembly 3, and a sandblasting assembly 4. The sand blasting chamber 1 comprises a shell 11, wherein the shell 11 is a rectangular body, and a cavity is formed in the shell 11. The conveyor assembly 2 includes a conveyor belt 21 extending from one side of the housing 11 through the housing 11 to the other side of the housing 11. The clamping assembly 3 is positioned on the conveyor belt 21, and the clamping assembly 3 is used for clamping the invisible appliance 7. The delivery assembly 2 transports the clamp assembly 3 into the shell 11 and the abrasive blasting assembly 4 removes burrs from the concealed appliance 7.

Referring to fig. 3 and 4, the clamping assembly 3 includes a base plate 34, and the base plate 34 is a rectangular plate. The substrate 34 is provided with an upper die 31 and a lower die 32, and the lower die 32 is fixedly connected with the substrate 34. Lower die 32 has cavity 321, and upper die 31 is inserted into cavity 321. The concealed appliance 7 comprises a root 71, the root 71 corresponds to the root of the tooth, the root 71 is upwards placed, namely, the area of the concealed appliance 7 with burrs is upwards placed, the concealed appliance 7 is embedded into the cavity 321, and the upper die 31 is embedded into the concealed appliance 7 so as to clamp the concealed appliance 7. Since each of the stealth appliances 7 is customized based on the dental model of the patient, each dental model has slight differences, resulting in different specific shapes of each of the stealth appliances 7, but the shapes of the teeth of each person are substantially the same, i.e., the general shapes of the different stealth appliances 7 are the same. The shape of the lower die 32 is the same as the general shape of the invisible appliance 7, and the applicability to different invisible appliances 7 can be improved.

The two ends of the upper die 31 correspond to the two ends of the lower die 32, the lower die 32 is hinged with the upper die 31 at the two ends, and the hinge sleeve is provided with a torsion spring 33. The upper die 31 is fixedly connected with a handle 35, and when the handle 35 is lifted, the upper die 31 and the lower die 32 can be separated, so that the invisible appliance 7 can be conveniently clamped in or taken out. The surfaces of the upper die 31 and the lower die 32, which are close to the invisible appliance 7, are made of elastic rubber, so that the situation of scraping the invisible appliance 7 can be reduced, and the irregular shape of the invisible appliance 7 can be better adapted.

Referring to fig. 1, a conveyor belt 21 is horizontally disposed, and the conveyor belt 21 is driven by a driving source, which may be a motor or the like. The substrate 34 is placed on the conveyor belt 21, the conveyor belt 21 conveys the invisible appliance 7 into the shell 11 for polishing, and the substrate 34 is conveyed out of the shell 11 after polishing is completed.

In other embodiments of the present application, when only a small amount of the concealed correction device 7 needs to be polished, the transfer assembly 2 may not be provided, and the base plate 34 is manually placed in the housing 11 to polish the concealed correction device 7, and the base plate 34 is taken out after polishing is completed.

Referring to fig. 2, the blast room 1 further includes a moving assembly 12, the moving assembly 12 includes a support frame 121 and a telescopic member 125, the support frame 121 is located inside the housing 11, the support frame 121 is a rectangular frame, and the length of the support frame 121 is smaller than the length of the substrate 34. The telescopic member 125 can be a cylinder, an oil cylinder, an electric push rod, etc., the telescopic member 125 is fixedly connected to the top inner wall of the housing 11, the telescopic end of the telescopic member 125 is fixedly connected to the supporting frame 121, and the telescopic member 125 can drive the supporting frame 121 to move up and down.

When the substrate 34 is conveyed below the supporting frame 121, the conveying belt 21 stops conveying, and the telescopic piece 125 enables the supporting frame 121 to move downwards until the supporting frame 121 abuts against two ends of the substrate 34, so that the substrate 34 is abutted, and the situation that the polishing effect is affected due to shaking of the invisible appliance 7 in the polishing process is reduced.

Referring to fig. 4, the moving assembly 12 further includes a screw 122 and two sliders 123 disposed on the screw 122, and the screw 122 is provided with two sliders 123 correspondingly.

Two ends of the screw rod 122 are rotatably connected with the supporting frame 121, two screw rods 122 are arranged, and the two screw rods 122 are parallel. The screw rods 122 are perpendicular to the transport direction of the conveyor belt 21, and the planes of the two screw rods 122 are parallel to the plane of the conveyor belt 21. The ends of the two screw rods 122 are driven to synchronously rotate by a power source, which can be a motor or the like, and the power source is fixedly connected with the support frame 121.

Both screw rods 122 are threaded on the slider 123, and thus, in the embodiment of the present application, the slider 123 is provided with two.

A first connecting rod 124 is arranged between the two sliding blocks 123, two ends of the first connecting rod 124 are fixedly connected with the two sliding blocks 123 respectively, and when the power source enables the screw rod 122 to rotate forwards or reversely, the sliding blocks 123 can slide back and forth along the screw rod 122.

Referring to fig. 4, the sand blasting assembly 4 includes a sand blasting gun head 41 and a sand separating box 42, the sand separating box 42 is rectangular, a cavity is formed in the sand separating box 42, the sand separating box 42 is fixedly connected with a first connecting rod 124, and the sand blasting gun head 41 is provided with a plurality of sand separating boxes 42 and is communicated with the sand separating boxes 42.

When the blasting material flows from the sand separating box 42 to the blasting gun heads 41, the sand separating box 42 promotes the blasting uniformity of each blasting gun head 41 to promote quality control. The sand separating box 42 moves together with the first connecting rod 124 so that the sand blasting gun head 41 can sequentially blast the concealed appliance 7.

Referring to fig. 1 and 2, a sand supply assembly 6 is disposed on a sand blasting chamber 1, the sand supply assembly 6 includes a sand storage box 61, the sand storage box 61 is a rectangular body with a cavity, the sand storage box 61 is located below a housing 11, the sand storage box 61 is communicated with the housing 11, and sand blasting materials after polishing can fall into the sand storage box 61 for storage.

The sand-blasting pump 62 is fixedly connected to the outer side of the sand storage box 61, the sand supply assembly 6 further comprises a conveying pipe 63, one end of the conveying pipe 63 is communicated with the sand-blasting pump 62, the other end of the conveying pipe 63 is communicated with the sand-dividing box 42, the sand-blasting pump 62 pumps sand-blasting materials in the sand storage box 61 to the sand-dividing box 42 through the conveying pipe 63, and the sand-blasting materials are ejected by the sand-blasting gun head 41 to form recycling of the sand-blasting materials. In other embodiments of the present application, a plurality of delivery pipes 63 may be provided, and the plurality of delivery pipes 63 are directly in one-to-one communication with the plurality of blasting gun heads 41.

Referring to fig. 1 and 2, a filter plate 64 is provided between the housing 11 and the sand storage box 61, the filter plate 64 is detachably connected with the sand storage box 61, and the filter plate 64 can filter impurities such as burr and chips in the sand blasting material, thereby improving the cleanliness of the recycled sand blasting material.

In order to facilitate the sand blasting material to fall into the sand storage box 61, a cylinder is arranged in the shell 11, the output end of the cylinder is fixedly connected with a scraper 65, and the scraper 65 is abutted with the conveyor belt 21. After the invisible appliance 7 of the base plate 34 is processed, the scraping plate 65 moves back and forth to scrape the sand blasting material retained on the conveyor belt 21 and scrape the sand blasting material into the sand storage box 61; when the next substrate 34 is transported into the housing 11, the squeegee 65 is reset and the scraping is stopped. In other embodiments of the present application, bristles may be provided on the side of the scraper 65 adjacent to the conveyor belt 21 to enhance the scraping effect on the blasting material.

Referring to fig. 4, a hot melt assembly 5 for heating the concealed appliance 7 is also provided within the shell 11. After the sand blasting operation, the surface of the invisible appliance 7 can form a frosted surface, so that the appearance of the invisible appliance 7 is affected, meanwhile, tiny burrs are formed on the surface after the sand blasting operation, and the requirement of the invisible appliance 7 on the removal of the burrs is high. Therefore, heating of the surface of the invisible appliance 7 is required to soften and remove the fine burrs and frosted surfaces.

Referring to fig. 4 and 5, a second connecting rod 126 is further disposed between the two sliders 123, and both ends of the second connecting rod 126 are fixedly connected with the two sliders 123, respectively. The hot melt assembly 5 includes a support 53, which support 53 is a connecting cylinder 531 in this embodiment, and may be a connecting rod or the like in other implementations of this embodiment. The connecting cylinder 531 is fixedly connected with the second connecting rod 126, the connecting cylinder 531 is a penetrating cylinder, and the axis of the connecting cylinder 531 is perpendicular to the plane where the conveyor belt 21 is located. The inside one end that is close to conveyer belt 21 of connecting cylinder 531 is provided with heating piece 51, and heating piece 51 can produce heat, and heating piece 51 can be heater strip, heating stick, hot plate etc.. A fan 52 is provided at an end of the inside of the connection cylinder 531 remote from the heating member 51, and the fan 52 can generate wind force.

After the sand blasting operation is completed, the hot melting assembly 5 is started, the heating piece 51 generates heat, and wind power generated by the fan 52 transfers the heat to the invisible appliance 7, so that the surface of the invisible appliance 7 is heated, the frosted surface of the invisible appliance 7 can be removed, and meanwhile, tiny burrs are removed, so that the surface of the invisible appliance 7 is smoother.

The hot melt assembly 5 can move along with the slider 123 to uniformly heat each of the concealed appliances 7, and the wind generated by the fan 52 can blow away the sand blasting material retained in the upper mold 31, the lower mold 32 and the concealed appliances 7. The heat generated by the hot melt assembly 5 also sinters the burr chips into a block shape, thereby facilitating the filtration of the filter plate 64.

The implementation principle of the thermal polishing device suitable for the invisible appliance in embodiment 1 of the application is as follows: the invisible appliance 7 is clamped between the upper die 31 and the lower die 32, the base plate 34 is placed on the conveying belt 21, the conveying belt 21 conveys the base plate 34 into the shell 11, the support frame 121 is abutted with the base plate 34 to fix the base plate 34, the sand blasting gun head 41 is used for sand blasting the invisible appliance 7 to remove burrs, and after sand blasting is finished, the invisible appliance 7 is heated by the hot melting assembly 5 to further remove burrs and enable the surface to be smoother. The slide block 123 drives the sand blasting assembly 4 and the hot melting assembly 5 to reciprocate, so that the processing uniformity is improved. The sand blasting material after sand blasting is filtered by the filter plate 64 and enters the sand storage box 61 for recycling.

Example 2:

embodiment 2 of the application discloses a thermal polishing device suitable for an invisible appliance.

Referring to fig. 6 and 7, embodiment 2 of the present application is different from embodiment 1 in that: the conveyor assembly 2 comprises two conveyor chains 22, the conveyor chains 22 replacing the conveyor belt 21. The conveying chains 22 are provided with two, a plurality of supporting rods 23 are arranged between the two conveying chains 22, two ends of each supporting rod 23 are fixedly connected with the two conveying chains 22 respectively, gaps are formed between the plurality of supporting rods 23, and the substrate 34 is placed on the adjacent supporting rods 23. The conveying chain 22 is driven by a driving source, which may be a motor or the like, to convey the substrate 34 into the housing 11 for processing, and the sandblasted material falls from the gaps between the support rods 23 to the sand storage box 61 for collection, so that the sandblasted material can be recycled.

The implementation principle of the thermal polishing device suitable for the invisible appliance in embodiment 2 of the application is as follows: the invisible appliance 7 is clamped between the upper die 31 and the lower die 32, then the base plate 34 is placed on the supporting rod 23, the conveying chain 22 drives the supporting rod 23 to convey the invisible appliance 7 into the shell 11 for sand blasting and heating, and after the invisible appliance 7 is processed, the conveying chain 22 conveys the invisible appliance 7 out of the shell 11.

The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.

Claims (9)

1. A thermal polishing device suitable for invisible appliance, characterized in that: the device comprises a sand blasting chamber (1), a sand blasting assembly (4), a hot melting assembly (5), and a conveying assembly (2) for conveying the invisible appliance (7) into the sand blasting chamber (1) and conveying the invisible appliance (7) out of the sand blasting chamber (1);

the transmission assembly (2) is provided with a clamping assembly (3) for clamping the invisible appliance (7);

the sand blasting assembly (4) comprises a sand blasting gun head (41) arranged inside the sand blasting chamber (1);

the hot melting assembly (5) comprises a supporting piece (53) arranged in the sand blasting chamber (1), a heating piece (51) and a fan (52) are fixed on the supporting piece (53), and the fan (52) is arranged towards the heating piece (51);

the clamping assembly (3) comprises an upper die (31), a lower die (32) and a substrate (34);

the substrate (34) is arranged on the conveying assembly (2), and the lower die (32) is connected with the substrate (34); a cavity (321) for placing the invisible appliance (7) is formed between the upper die (31) and the lower die (32);

two ends of the upper die (31) are in one-to-one correspondence with two ends of the lower die (32), the end part of the upper die (31) is hinged with the end part of the lower die (32), and a torsion spring (33) is sleeved on the hinge shaft.

2. A thermal polishing device for an invisible appliance according to claim 1, wherein: the conveyor assembly (2) comprises a conveyor belt (21), the conveyor belt (21) passes through the sandblasting booth (1) from one side of the sandblasting booth (1) and extends to the other side of the sandblasting booth (1), and the substrate (34) is located on the conveyor belt (21).

3. A thermal polishing device for an invisible appliance according to claim 1, wherein: the sandblasting booth (1) comprises a housing (11) and a moving assembly (12) disposed within the housing (11); the moving assembly (12) comprises a supporting frame (121) arranged on the inner wall of the shell (11), and the sand blasting gun head (41) is arranged on the supporting frame (121).

4. A thermal polishing device for an invisible appliance according to claim 3, wherein: two screw rods (122) are arranged on the support frame (121), and the two screw rods (122) are respectively penetrated and connected with a sliding block (123) in a threaded manner;

a first connecting rod (124) is arranged between the two sliding blocks (123), two ends of the first connecting rod (124) are respectively connected with the two sliding blocks (123), and the sand blasting gun head (41) is connected with the first connecting rod (124).

5. The thermal polishing device for an invisible appliance according to claim 4, wherein: and a second connecting rod (126) is further arranged between the two sliding blocks (123), two ends of the second connecting rod (126) are respectively connected with the two sliding blocks (123), and the supporting piece (53) is arranged on the second connecting rod (126).

6. The thermal polishing device for an invisible appliance according to claim 4, wherein: the sand blasting chamber (1) is internally provided with a telescopic piece (125) for driving the supporting frame (121) to be abutted against the substrate (34), and the telescopic piece (125) is connected with the supporting frame (121).

7. The thermal polishing device for an invisible appliance according to claim 6, wherein: the conveying assembly (2) comprises a conveying chain (22), a supporting rod (23) is connected to the conveying chain (22), and the substrate (34) is located on the supporting rod (23).

8. A thermal polishing device for an invisible appliance according to claim 3, wherein: the sand supply assembly (6) is arranged on the shell (11), the sand supply assembly (6) comprises a sand storage box (61), the sand storage box (61) is positioned at the bottom of the shell (11), and the bottom of the shell (11) is communicated with the top of the sand storage box (61);

the sand supply assembly (6) further comprises a sand spraying pump (62) and a conveying pipe (63); the feeding port of the sand blasting pump (62) is communicated with the sand storage box (61), the discharging port of the sand blasting pump (62) is connected with one end of a conveying pipe (63), and the other end of the conveying pipe (63) is connected with the sand blasting gun head (41).

9. The thermal polishing device for an invisible appliance according to claim 8, wherein: a filter plate (64) is arranged between the shell (11) and the sand storage box (61), and the filter plate (64) is detachably connected with the sand storage box (61).