CN115383632A

CN115383632A - Thermal polishing device suitable for invisible appliance

Info

Publication number: CN115383632A
Application number: CN202210975160.2A
Authority: CN
Inventors: 田雷; 张天举; 吴斌
Original assignee: Beijing Dijia Medical Equipment Co ltd
Current assignee: Beijing Dijia Medical Equipment Co ltd
Priority date: 2022-08-13
Filing date: 2022-08-13
Publication date: 2022-11-25
Anticipated expiration: 2042-08-13
Also published as: CN115383632B

Abstract

The application discloses a thermal polishing device suitable for an invisible appliance, which comprises a sand blasting chamber, a sand blasting component, a hot melting component and a conveying component, wherein the conveying component is used for conveying the invisible appliance into the sand blasting chamber and conveying the invisible appliance out of the sand blasting chamber; the conveying component is provided with a clamping component for clamping the invisible orthodontic appliance; the sand blasting assembly comprises a sand blasting gun head arranged in the sand blasting chamber; the hot-melt assembly comprises a support member arranged in the blasting chamber, a heating member and a fan are fixed on the support member, and the fan is arranged towards the heating member. The heating power burnishing device of this application promotes the efficiency that the ware deburring was rescued to stealthy, promotes smooth and the planarization in surface.

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) putting the three-dimensional formed tooth model into a dental film pressing machine for hot-pressing film pressing, and separating and cutting the film after the film is cooled to obtain the invisible appliance.

The stealthy ware of rescaling can produce the burr at stealthy root of rescuring the ware when cutting, is not fit for patient's intraoral wearing, still generally needs to polish with abrasive paper or buffing wheel.

However, generally collect a plurality of patient's tooth model data earlier and can concentrate production stealthy ware of rescuring after, then polish one by one to stealthy ware of rescuring, lead to efficiency on the low side easily, artifical polishing is difficult to accurate assurance to the product accuse standard moreover, still probably scrapes the flower or damages stealthy ware of rescuring at the in-process of polishing the burr to reduce the surperficial smoothness and the roughness of stealthy ware of rescuring.

Disclosure of Invention

In order to promote the efficiency that stealthy correction of ware deburring, promote whole article accuse level, and then promote stealthy correction of ware surface smoothness and planarization, this application provides a heating power burnishing device suitable for stealthy correction of ware.

The application provides a heating power burnishing device suitable for ware is rescued in stealthy, adopts following technical scheme:

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

the conveying component is provided with a clamping component for clamping the invisible orthodontic appliance;

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

the hot-melt assembly comprises a support member arranged in the blasting chamber, a heating member and a fan are fixed on the support member, and the fan is arranged towards the heating member.

By adopting the technical scheme, after the invisible appliance is clamped by the clamping component, the clamping component is conveyed into the sand blasting chamber by the conveying component, the sand blasting gun head is opened to carry out sand blasting operation on the invisible appliance, so that burrs on the invisible appliance are removed, and the processing efficiency is improved; after the invisible appliance is subjected to sand blasting, the heating element is started to heat, and the fan generates wind power to transfer heat generated by the heating element to the invisible appliance so as to soften frosted and fine burrs on the surface of the invisible appliance after the sand blasting, and further improve the smoothness of the surface; meanwhile, the sand blasting material retained 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 base plate is arranged on the conveying assembly, and the lower die is connected with the base plate; a cavity for placing the invisible orthodontic device is formed between the upper die and the lower die;

the two ends of the upper die correspond to the two ends of the lower die one by one, the end part of the upper die is hinged to the end part of the lower die, and a torsional spring is sleeved on the hinged shaft.

Through adopting above-mentioned technical scheme, separately go up mould and lower mould and with stealthy the ware of rescaling and put into the die cavity, make mould and lower mould press from both sides the stealthy ware of rescaling under the elastic action of torsional spring, when a plurality of lower moulds of base plate connection, can once process a plurality of stealthy ware of rescuring, promote machining efficiency.

Optionally, the conveying assembly comprises a conveying belt, the conveying belt penetrates through the sand blasting chamber from one side of the sand blasting chamber and extends to the other side of the sand blasting chamber, and the substrate is located on the conveying belt.

Through adopting above-mentioned technical scheme, go up mould and the stealthy ware of rescaling of lower mould centre gripping, place the base plate on the conveyer belt, the conveyer belt transports the base plate to in the sandblast room to rescure the ware and carry out the sandblast operation to stealthy.

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 the 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, the support frame is provided with two screw rods, and the two screw rods are both penetrated through and connected with a sliding block in a threaded manner;

and 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 the holding power to the sandblast rifle head, because slider and lead screw threaded connection, the slider can follow the axis direction reciprocating slide of lead screw to drive sandblast rifle head reciprocating motion, the realization is to the even sandblast of stealthy correction ware, in order to promote whole article accuse quality.

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 removed, drive the second connecting rod and remove together to drive hot melt subassembly reciprocating motion, heat the stealthy ware of rescaling after the sandblast, with getting rid of tiny burr, also enable the stealthy dull polish surface of rescuring the ware surface and forming because of the sandblast simultaneously and become more smooth, thereby promote product quality.

Optionally, the sandblast chamber is internally provided with a telescopic piece for driving the support frame to abut against the substrate, and the telescopic piece is connected with the support frame.

Through adopting above-mentioned technical scheme, when the base plate conveys to the support frame below by the conveyer belt, the extensible member makes the support frame remove downwards until with the base plate butt to press from both sides tight base plate, reduce because of the sandblast in-process leads to the base plate to take place to rock or the condition of aversion, promote sandblast stability, thereby promote the quality of polishing.

Optionally, the conveying assembly includes 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, because there is the clearance between the bracing piece, the sandblast material can be followed the clearance whereabouts between the bracing piece, and the collection of the sandblast material of being convenient for is favorable to the cyclic utilization of sandblast material.

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

the sand supply assembly also comprises a sand blasting pump and a conveying pipe; the feeding port of the sand blasting pump is communicated with the sand storage box, the discharge port of the sand blasting pump is connected with one end of the conveying pipe, and the other end of the conveying pipe is connected with the sand blasting gun head.

Through adopting above-mentioned technical scheme, the sandblast material is collected to storing up the sand box after the deburring, is carried to the sandblast rifle head through the conveyer pipe by the sandblast pump suction sandblast material again, is spout by the sandblast rifle head again to realize the cyclic utilization of sandblast 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 of heating-up member and fan transmission makes the burr piece melt or the sintering, and the diameter of the foreign particles who forms is great to being filtered by the filter plate, promoting cyclic utilization's the net degree of sandblast material, and then promoting the processingquality of endless sandblast material.

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

1. after the clamping component clamps the invisible appliance, the conveying component conveys the clamping component into the sand blasting chamber, and the sand blasting component removes burrs of the invisible appliance, so that the processing efficiency is improved; after sand blasting, the hot melting assembly is opened to soften frosted sand and fine burrs on the surface of the invisible appliance after sand blasting, and meanwhile, the sand blasting material remained in the clamping assembly can be blown away, so that the surface smoothness is further improved;

2. the telescopic piece can enable the support frame to move downwards until the support frame is abutted to the base plate, so that the base plate is clamped, the situation that the base plate shakes or shifts is reduced, the sand blasting stability is improved, and the grinding quality is improved;

3. the slider can drive sandblast subassembly and hot melt subassembly reciprocating motion to carry out even processing to stealthy ware of rescuring, promote whole quality.

Drawings

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

FIG. 2 is a schematic view of a removal booth according to example 1 of the present application;

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

FIG. 4 is an exploded view of the clamping assembly of example 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 view of the overall structure of embodiment 2 of the present application;

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

Description of reference numerals: 1. a sand blasting chamber; 11. a housing; 12. a moving assembly; 121. a support frame; 122. a screw rod; 123. a slider; 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 bar; 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 sandblasting assembly; 41. a sand blasting gun head; 42. separating sand box; 5. a hot melt assembly; 51. a heating member; 52. a fan; 53. a support member; 531. a connecting cylinder; 6. a sand supply assembly; 61. a sand storage box; 62. a sand blasting pump; 63. a delivery pipe; 64. filtering the plate; 65. a squeegee; 7. an invisible appliance; 71. and (4) root.

Detailed Description

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

Example 1:

the embodiment 1 of the application discloses a thermal polishing device suitable for stealthy ware of rescaling.

Referring to fig. 1 and 2, a thermal polishing apparatus suitable for use in an invisible appliance includes a blast chamber 1, a transfer assembly 2, a gripper assembly 3, and a blast assembly 4. The sandblasting room 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 comprises a conveyor belt 21, the conveyor belt 21 passing through the housing 11 from one side of the housing 11 and extending to the other side of the housing 11. The holding component 3 is positioned on the conveyor belt 21, and the holding component 3 is used for holding the invisible orthodontic appliance 7. The transfer assembly 2 transports the gripper assembly 3 into the housing 11 and the blast assembly 4 deburres the invisible 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 upper die 31 and the lower die 32 are provided on the base plate 34, and the lower die 32 is fixedly connected to the base plate 34. The lower die 32 defines a cavity 321, and the upper die 31 is inserted into the cavity 321. The invisible appliance 7 comprises a root part 71, the root part 71 corresponds to the tooth root of the tooth, the root part 71 is placed upwards, namely, the burr-containing area of the invisible appliance 7 is placed upwards, the invisible appliance 7 is embedded into the cavity 321, and the upper die 31 is embedded into the invisible appliance 7 so as to clamp the invisible appliance 7. Since each invisible appliance 7 is customized based on the patient's tooth model, there are slight differences in each tooth model, resulting in that the specific shape of each invisible appliance 7 is different from one another, but the tooth shape of each person is substantially the same, i.e., the general shape of the different invisible appliances 7 is the same. The shape of the lower mold 32 is the same as the approximate shape of the invisible orthosis 7, and the applicability to different invisible orthosis 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 to the upper die 31 at the two ends, and a torsional spring 33 is sleeved on the hinged shaft. The handle 35 is fixedly connected to the upper mold 31, and when the handle 35 is lifted, the upper mold 31 and the lower mold 32 can be separated, so that the invisible appliance 7 can be conveniently clamped or taken out. The surfaces of the upper die 31 and the lower die 32 close to the invisible appliance 7 are made of elastic rubber, so that the situation of scratching the invisible appliance 7 can be reduced, and the invisible appliance 7 can be better adapted to the irregular shape.

Referring to fig. 1, the 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 base plate 34 is placed on the conveyor belt 21, the conveyor belt 21 conveys the invisible appliance 7 into the shell 11 for polishing, and after polishing is completed, the base plate 34 is conveyed out of the shell 11.

In other embodiments of this application, when only need polish a small amount of stealthy and rescue ware 7, can not set up transfer module 2, place base plate 34 in shell 11 by the manual work to stealthy rescue ware 7 and polish, it can to take out base plate 34 after finishing polishing.

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

When base plate 34 carried support frame 121 below, conveyer belt 21 stopped carrying, and extensible member 125 makes support frame 121 move down, until support frame 121 and base plate 34's both ends looks butt to support tight base plate 34, reduce stealthy ware 7 of rescaling and produce and rock and influence the condition of the effect of polishing at the in-process of polishing.

Referring to fig. 4, the moving assembly 12 further includes a screw 122 and two sliding blocks 123 disposed on the screw 122, two screws 122 are disposed, and two sliding blocks 123 are also correspondingly disposed.

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

Both the two screw rods 122 are threaded and screwed on the sliding block 123, and therefore, in the embodiment of the present application, two sliding blocks 123 are provided.

A first connecting rod 124 is arranged between the two sliding blocks 123, two ends of the first connecting rod 124 are respectively and fixedly connected with the two sliding blocks 123, and when the power source enables the screw rod 122 to rotate forwards or backwards, 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 a rectangular body, 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 blasting guns and is communicated with the sand separating box 42.

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

Referring to fig. 1 and 2, be provided with on the sandblast room 1 and supply sand subassembly 6, supply sand subassembly 6 including storing up sand box 61, store up sand box 61 for the cuboid of seting up the cavity, store up sand box 61 and be located shell 11 below, chu Shahe and shell 11 intercommunication, the sandblast material after polishing can drop to storing up in the sand box 61 and store.

Store up sand box 61 outside fixedly connected with sand blasting pump 62, supply sand subassembly 6 still to include conveyer pipe 63, conveyer pipe 63 one end intercommunication sand blasting pump 62, other end intercommunication branch sand box 42, sand blasting pump 62 will store up the sandblast material in the sand box 61 and pump to dividing sand box 42 through conveyer pipe 63, spout by sandblast rifle head 41 again, form the cyclic utilization of sandblast material. In other embodiments of the present application, a plurality of delivery pipes 63 may be provided, and the plurality of delivery pipes 63 may directly communicate with the plurality of blasting tips 41 one by one.

Referring to fig. 1 and 2, a filter plate 64 is arranged 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 burrs and chips in the sand blasting material, so that the cleanliness of the sand blasting material recycled is improved.

In order to facilitate the sand blasting material to fall into the sand storage box 61, a cylinder is arranged in the shell 11, a scraping plate 65 is fixedly connected to the output end of the cylinder, and the scraping plate 65 is abutted to the conveyor belt 21. After the invisible appliance 7 of the substrate 34 is processed, the scraping plate 65 reciprocates 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 of the sand blast.

Referring to fig. 4, a heat fusible component 5 for heating the invisible appliance 7 is also provided within the shell 11. The stealthy ware 7 of rescaling can form dull polish surface on the surface after the sandblast operation to influence the pleasing to the eye of stealthy ware 7 of rescaling, still there is tiny burr on the surface after the sandblast operation simultaneously, and stealthy ware 7 of rescaling is higher to the requirement of getting rid of burr. Thus, the surface of the invisible appliance 7 needs to be heated to soften and remove fine burrs and a frosted surface.

Referring to fig. 4 and 5, a second connecting rod 126 is further disposed between the two sliders 123, and two ends of the second connecting rod 126 are respectively fixedly connected to the two sliders 123. The heat fusible component 5 includes a supporting member 53, in this embodiment, the supporting member 53 is a connecting cylinder 531, and in other embodiments of this application, it may also be a connecting rod, etc. 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 heating member 51 is provided inside the connecting cylinder 531 at an end close to the conveyor belt 21, and the heating member 51 can generate heat, and the heating member 51 may be a heating wire, a heating rod, a heating plate, or the like. The end of the inside of the connecting tube 531 away from the heating member 51 is provided with a fan 52, and the fan 52 can generate wind.

After the sandblast operation was accomplished, open hot melt component 5, heating member 51 produced heat, and the wind-force that fan 52 produced is with heat transfer to stealthy the ware 7 of correcting on to heat stealthy the surface of correcting the ware 7, can get rid of the dull polish surface that stealthy corrected the ware 7, get rid of tiny burr simultaneously, thereby make stealthy the surface of correcting the ware 7 more bright and clean.

The hot melting assembly 5 can move along with the sliding block 123, so that each invisible appliance 7 can be uniformly heated, and the wind power generated by the fan 52 can blow away the sand blasting materials remained in the upper die 31, the lower die 32 and the invisible appliances 7. The heat generated by the hot melt assembly 5 can also sinter the burred debris into a cake that facilitates filtration by the filter plate 64.

The application embodiment 1 a thermal polishing device suitable for stealthy ware of rescaling implements the principle and does: the invisible appliance 7 is clamped between the upper die 31 and the lower die 32, the substrate 34 is placed on the conveyor belt 21, the conveyor belt 21 conveys the substrate 34 into the shell 11, the support frame 121 is abutted to the substrate 34 to fix the substrate 34, the sand blasting gun head 41 performs sand blasting on the invisible appliance 7 to remove burrs, and after the sand blasting is finished, the hot melting assembly 5 performs heating to further remove the burrs and enable the surface to be smoother. The slider 123 drives the sand blasting component 4 and the hot melting component 5 to move back and forth, and machining uniformity is improved. The sandblasted material is filtered by the filter plate 64 and enters the sand storage box 61 for recycling.

Example 2:

the embodiment 2 of the application discloses a thermal polishing device suitable for stealthy ware of rescaling.

Referring to fig. 6 and 7, embodiment 2 of the present application differs from embodiment 1 in that: the conveyor assembly 2 comprises two conveyor chains 22, the conveyor chains 22 replacing the conveyor belts 21. The conveying chains 22 are provided with two, a plurality of support rods 23 are arranged between the two conveying chains 22, two ends of each support rod 23 are fixedly connected with the two conveying chains 22 respectively, gaps are formed among the support rods 23, and the base plates 34 are placed on the adjacent support rods 23. The conveying chain 22 is driven by a driving source, the driving source can be a motor and the like, the substrate 34 is conveyed into the shell 11 for processing, and the sandblasted materials fall from the gap between the supporting rods 23 to the sand storage box 61 for collection, so that the cyclic utilization of the sandblasted materials is facilitated.

The application embodiment 2 a thermal polishing device's suitable for stealthy ware of rescaling implementation principle does: the invisible appliance 7 is clamped between the upper die 31 and the lower die 32, the base plate 34 is placed on the support rod 23, the support rod 23 is driven by the conveyor chain 22 to convey the invisible appliance 7 into the shell 11 for sand blasting and heating, and the invisible appliance 7 is conveyed out of the shell 11 by the conveyor chain 22 after the invisible appliance is processed.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a thermal polishing device suitable for stealthy ware of rescaling which characterized in that: comprises a sand blasting chamber (1), a sand blasting component (4), a hot melting component (5), and a conveying component (2) used 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 conveying component (2) is provided with a clamping component (3) for clamping the invisible orthodontic appliance (7);

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

the hot-melt component (5) comprises a support member (53) arranged in the sand blasting chamber (1), a heating member (51) and a fan (52) are fixed on the support member (53), and the fan (52) is arranged towards the heating member (51).

2. The thermal polishing device for invisible appliances of claim 1, wherein: the clamping assembly (3) comprises an upper die (31), a lower die (32) and a base plate (34);

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

go up the both ends of mould (31) and the both ends one-to-one of lower mould (32), and go up mould (31) tip and lower mould (32) tip articulated, the cover is equipped with torsional spring (33) on the articulated shaft.

3. The thermal polishing device for invisible appliances of claim 2, wherein: the conveying assembly (2) comprises a conveying belt (21), the conveying belt (21) penetrates through the sand blasting chamber (1) from one side of the sand blasting chamber (1) and extends to the other side of the sand blasting chamber (1), and the substrate (34) is located on the conveying belt (21).

4. The thermal polishing device for invisible appliances of claim 2, wherein: the sandblasting booth (1) comprises a casing (11) and a moving assembly (12) arranged inside the casing (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).

5. The thermal polishing device for invisible appliances of claim 4, wherein: two screw rods (122) are arranged on the support frame (121), and the two screw rods (122) are both penetrated through and are in threaded connection with a sliding block (123);

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).

6. The thermal polishing device for invisible appliances of claim 5, wherein: 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).

7. The thermal polishing device for invisible appliances of claim 5, wherein: the sand blasting chamber (1) is internally provided with a telescopic piece (125) used for driving the support frame (121) to abut against the substrate (34), and the telescopic piece (125) is connected with the support frame (121).

8. The thermal polishing device for invisible appliances of claim 7, wherein: the conveying assembly (2) comprises a conveying chain (22), a supporting rod (23) is connected to the conveying chain (22), and the base plate (34) is located on the supporting rod (23).

9. The thermal polishing device for invisible orthodontic appliance of claim 4, wherein: a 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 blasting pump (62) and a conveying pipe (63); the feeding port of the sand blasting pump (62) is communicated with Chu Shahe (61), the discharging port of the sand blasting pump (62) is connected with one end of the conveying pipe (63), and the other end of the conveying pipe (63) is connected with the sand blasting gun head (41).

10. The thermal polishing device for invisible appliances of claim 9, wherein: a filter plate (64) is arranged between the shell (11) and the Chu Shahe (61), and the filter plate (64) is detachably connected with the Chu Shahe (61).