Vacuum high-temperature denture sintering furnace

Abstract

The vacuum high-temperature denture sintering furnace comprises a furnace body, a tray is installed on one side of the furnace body in a sliding mode, a sealing block is fixedly installed on the top of the tray, and a heating wire is fixedly installed in an inner cavity of the furnace body; the cooling mechanism is used for cooling the sintered false tooth; the cooling mechanism comprises two clamping blocks, the two clamping blocks are slidably mounted on one side of the furnace body, a second threaded rod is rotatably mounted at the top of the furnace body and is in threaded connection with an electric telescopic rod, the output end of the electric telescopic rod is fixedly connected with a mounting block, and a fifth groove and a sixth groove are formed in one side of the mounting block. An output shaft of a third motor drives a gear to rotate, the gear enables two racks to slide on the inner surface of a limiting pipe, the racks drive two clamping rods to get close to each other to enable clamping pieces to clamp the false tooth, then a mounting block is made to move, the sintered false tooth is moved to the top of the other clamping block, and the false tooth to be sintered is moved to the top of a sealing block.

Description

Technical Field

[0001] The invention relates to the technical field of denture sintering, in particular to a vacuum high-temperature denture sintering furnace. Background Art

[0002] The vacuum high-temperature denture sintering furnace is one of the core equipment used in dental laboratories or dental clinics to process and manufacture high-strength, high-precision dental restorations (mainly all-ceramic restorations, but also metal restorations).

[0003] After searching, the patent document with publication number CN207066101U discloses a new type of fully automatic denture sintering furnace, which includes a furnace chamber, a heating element disposed in the furnace chamber, and the heating element includes a spiral quartz tube and a resistance heating wire running through the spiral quartz tube to achieve uniform temperature field distribution; a movable sample tray allows the sample to pass through the bottom of the furnace chamber and be located within the furnace chamber. The new fully automatic denture sintering furnace using this utility model can achieve uniform temperature field distribution, save energy, and keep the furnace chamber clean and pollution-free; it adopts a stable and reliable crucible tray lifting mechanism, which not only has adjustable lifting speed but also smooth and precise transmission; it arranges multiple spring members to evenly compress the O-ring of the sealing element to achieve vacuum or pressure atmosphere requirements; and it achieves the conversion of vacuum or atmosphere environment inside the high-temperature furnace chamber. The new fully automatic denture sintering furnace of the above design not only meets the needs of denture sintering, but can also be used for metal annealing and high-temperature sintering experiments, making the equipment more widely applicable.

[0004] When the above design is in use, after the denture is sintered, the denture is removed from the furnace chamber along with the movable sample plate. At this time, the temperature of the movable sample plate and the denture are very high. At this time, the staff will take out the sintered denture and put in a new denture to be sintered. During this process, the staff is easily burned by the high temperature.

[0005] Therefore, a vacuum high-temperature denture sintering furnace is proposed to address the above problems. Summary of the Invention

[0006] In order to make up for the shortcomings of the existing technology and solve the problem that workers are easily burned by newly sintered dentures, the present invention proposes a vacuum high-temperature denture sintering furnace.

[0007] A vacuum high-temperature denture sintering furnace comprises a furnace body, a tray is slidably mounted on one side of the furnace body, a sealing block is fixedly mounted on the top of the tray, and a heating wire is fixedly mounted in the inner cavity of the furnace body; It also includes a cooling mechanism for cooling the sintered denture; The cooling mechanism includes two clamping blocks, which are slidably installed on one side of the furnace body. A second threaded rod is rotatably installed on the top of the furnace body. The second threaded rod is threadedly connected to an electric telescopic rod. The output end of the electric telescopic rod is fixedly connected to a mounting block. A fifth groove and a sixth groove are provided on one side of the mounting block. Clamping rods are slidably installed on the inner surfaces of the fifth groove and the sixth groove, and two clips are fixedly installed on one side of the clamping rod.

[0008] Preferably, a first groove is provided on the top of the furnace body, the heating wire is fixedly installed in the inner cavity of the first groove, a second groove is provided on one side of the furnace body, a first motor is fixedly installed on the inner surface of the second groove, the output shaft of the first motor is fixedly connected to a first threaded rod, the tray is slidably installed on the inner surface of the second groove, and the first threaded rod is threadedly connected to the tray.

[0009] Preferably, a third groove is formed on the inner wall of the second groove, a connecting rod is slidably mounted on the inner surface of the third groove, and the connecting rod is fixedly connected to the tray.

[0010] Preferably, a first water pipe is fixedly installed on one side of the furnace body, a first piston is slidably installed in the inner cavity of the first water pipe, the first piston is movably installed at the bottom of the connecting rod, and a first spring is fixedly installed between the first piston and the connecting rod.

[0011] Preferably, two second water pipes are fixedly connected to the outer surface of the first water pipe, a second piston is slidably installed in the inner cavity of the second water pipe, the second piston is fixedly connected to the clamping block, a second spring is fixedly connected between the clamping block and the second piston, two support blocks are fixedly installed on the top of the furnace body, and the clamping block is slidably installed on the top of the support block.

[0012] Preferably, a fourth groove is provided on the top of the furnace body, the second threaded rod is rotatably mounted on the inner surface of the fourth groove, one end of the second threaded rod is fixedly connected to a second motor, and the second motor is fixedly mounted on one side of the furnace body.

[0013] Preferably, a rack is fixedly mounted on one side of the clamping rod, two opposite surfaces of the racks are engaged with a gear, a third motor is fixedly connected to the top of the gear, and the third motor is fixedly mounted on the top of the mounting block.

[0014] Preferably, a limiting tube is fixedly mounted on one side of the mounting block, a seventh groove is provided in the inner cavity of the limiting tube, a limiting rod is fixedly mounted on the outer surface of the rack, and the limiting rod is slidably mounted on the inner surface of the seventh groove.

[0015] The present invention is beneficial in that: 1. In the present invention, the first motor output shaft drives the first threaded rod to rotate, and the first threaded rod drives the tray to carry the sealing block up to the inner cavity of the first groove. The inner cavity of the first groove is placed in a vacuum state by a vacuum pump, and the inner cavity of the first groove is heated by a heating wire to complete the sintering of the denture.

[0016] 2. The present invention drives the tray to move downward through the first threaded rod so that the top of the sealing block and the top of the clamping block are at the same height. At this time, the tray will move downward with the connecting rod, and the connecting rod will squeeze the first piston. The first piston squeezes the water in the inner cavity of the first water pipe, so that the water flows evenly to the two second water pipes. The water in the inner cavity of the second water pipe will push the second piston, and the second piston further pushes the clamping block so that the two clamping blocks move to both sides of the sealing block.

[0017] 3. The present invention rotates the second threaded rod through the second motor output shaft, and the second threaded rod drives the electric telescopic rod and the mounting block to move. The mounting block moves to both sides of the denture, and the gear is rotated by the third motor output shaft. The gear causes the two racks to slide on the inner surface of the limiting tube. The rack drives the two clamping rods to approach each other so that the clamps clamp the denture, and then the mounting block is moved, and the sintered denture is moved to the top of the other clamping block, and the denture to be sintered is moved to the top of the sealing block. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present invention; Figure 2 This is a schematic diagram of the cross-sectional structure of a furnace body according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the cross-sectional structure of a first water pipe according to an embodiment of the present invention; Figure 4 This is a schematic diagram of the clamping block installation structure according to an embodiment of the present invention; Figure 5 This is a schematic diagram of the installation structure of the installation block according to an embodiment of the present invention; Figure 6 This is a schematic diagram of the clip installation structure of an embodiment of the present invention.

[0020] In the figure: 1. furnace body; 11. first groove; 12. heating wire; 13. second groove; 14. third groove; 2. tray; 201. sealing block; 21. first threaded rod; 22. first motor; 23. connecting rod; 24. first water pipe; 241. first piston; 242. first spring; 25. second water pipe; 26. second piston; 261. second spring; 27. clamping block; 271. supporting block; 3. fourth groove; 31. second threaded rod; 32. second motor; 33. electric telescopic rod; 34. mounting block; 341. fifth groove; 342. sixth groove; 343. clamping rod; 344. clip; 345. limiting tube; 3451. seventh groove; 3452. limiting rod; 346. rack; 347. gear; 348. third motor. DETAILED DESCRIPTION

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0022] See also Figures 1 to 6 As shown, a vacuum high-temperature denture sintering furnace includes a furnace body 1, a tray 2 is slidably installed on one side of the furnace body 1, a sealing block 201 is fixedly installed on the top of the tray 2, and a heating wire 12 is fixedly installed in the inner cavity of the furnace body 1; it also includes a cooling mechanism for cooling the sintered denture; the cooling mechanism includes two clamping blocks 27, the two clamping blocks 27 are slidably installed on one side of the furnace body 1, a second threaded rod 31 is rotatably installed on the top of the furnace body 1, the second threaded rod 31 is threadedly connected to an electric telescopic rod 33, and the output end of the electric telescopic rod 33 is fixedly connected to a mounting block 34, and a fifth groove 341 and a sixth groove 342 are provided on one side of the mounting block 34, and the inner surfaces of the fifth groove 341 and the sixth groove 342 are slidably installed with a clamping rod 343, and two clips 344 are fixedly installed on one side of the clamping rod 343.

[0023] After the denture is sintered, the staff needs to take out the sintered denture and place the new denture to be sintered on a movable sample tray. It is easy to get burned during this process.

[0024] When the present invention is in use, the denture is first placed on the top of the sealing block 201, and then the sealing block 201 is lifted to the inner cavity of the furnace body 1. The inner cavity of the furnace body 1 is connected to a vacuum pump. After the sealing block 201 enters the inner cavity of the furnace body 1, the vacuum pump is used to evacuate the inner cavity of the furnace body 1 to a vacuum state, and then the heating wire 12 is used to heat the inner cavity of the furnace body 1 to a predetermined temperature to complete the sintering of the denture. After the sintering is completed, the denture is moved away from the furnace body 1 by the sealing block 201, and the sealing block 201 and the clamping block 27 are at the same height. The denture to be sintered is first placed on the top of the clamping block 27 close to the side of the mounting block 34. The second threaded rod 31 is rotated to drive the electric telescopic rod 33 to slide the mounting block 34. The mounting block 34 pushes the denture to be sintered to the top of the sealing block 201, and at the same time pushes the sintered denture onto another clamping block 27. After the denture cools down, the staff can take out the denture, avoiding the risk of burns for the staff.

[0025] Further, such as Figure 2 As shown, a first groove 11 is formed on the top of the furnace body 1, and the heating wire 12 is fixedly installed in the inner cavity of the first groove 11. A second groove 13 is formed on one side of the furnace body 1, and a first motor 22 is fixedly installed on the inner surface of the second groove 13. The output shaft of the first motor 22 is fixedly connected to a first threaded rod 21. The tray 2 is slidably mounted on the inner surface of the second groove 13, and the first threaded rod 21 is threadedly connected to the tray 2. A third groove 14 is formed on the inner wall of the second groove 13 . A connecting rod 23 is slidably mounted on the inner surface of the third groove 14 . The connecting rod 23 is fixedly connected to the tray 2 .

[0026] When the present invention is in use, the output shaft of the first motor 22 drives the first threaded rod 21 to rotate, and the first threaded rod 21 cooperates with the second groove 13 to limit the tray 2 so that the tray 2 slides along the inner cavity of the second groove 13. This can enable the tray 2 to rise to the inner cavity of the first groove 11 with the sealing block 201, bring the denture between the heating wires 12 and seal the second groove 13, so that the vacuum pump can draw the second groove 13 to a vacuum state. When the denture is sintered and the tray 2 descends, the tray 2 will move downward with the connecting rod 23.

[0027] Further, such as Figure 3 As shown, a first water pipe 24 is fixedly installed on one side of the furnace body 1, a first piston 241 is slidably installed in the inner cavity of the first water pipe 24, the first piston 241 is movably installed at the bottom of the connecting rod 23, and a first spring 242 is fixedly installed between the first piston 241 and the connecting rod 23; Two second water pipes 25 are fixedly connected to the outer surface of the first water pipe 24, and a second piston 26 is slidably installed in the inner cavity of the second water pipe 25. The second piston 26 is fixedly connected to a clamping block 27, and a second spring 261 is fixedly connected between the clamping block 27 and the second piston 26. Two support blocks 271 are fixedly installed on the top of the furnace body 1, and the clamping block 27 is slidably installed on the top of the support block 271.

[0028] When the present invention is in use, the inner cavities of the first water pipe 24 and the second water pipe 25 are filled with water, and the inner cavity section of the first water pipe 24 is twice the cross-section of the second water pipe 25. The connecting rod 23 drives the first piston 241 downward to squeeze the first piston 241. The first piston 241 squeezes the water in the inner cavity of the second water pipe 25 so that the water flows evenly to the two second water pipes 25. At this time, the water pushes the two second pistons 26 out of the inner cavity of the second water pipe 25. Then the second piston 26 slides with the clamping block 27 on the top of the support block 271. The two clamping blocks 27 slide to both sides of the sealing block 201. When the connecting rod 23 moves upward, the first piston 241 moves upward under the tension of the first spring 242. At the same time, the second spring 261 also squeezes the second piston 26 so that the second piston 26 returns to the inner cavity of the second water pipe 25 again. This can keep the two clamping blocks 27 away from the sealing block 201, which can not only prevent the staff from being scalded when the denture is placed on the clamping block 27, but also keep the sintered denture away from the sealing block 201 for rapid heat dissipation.

[0029] Further, such as Figure 5 As shown, a fourth groove 3 is opened on the top of the furnace body 1, and the second threaded rod 31 is rotatably installed on the inner surface of the fourth groove 3. One end of the second threaded rod 31 is fixedly connected to a second motor 32, and the second motor 32 is fixedly installed on one side of the furnace body 1.

[0030] When the present invention is in use, the second threaded rod 31 is rotated by the output shaft of the second motor 32. The outer surface of the second threaded rod 31 is threadedly connected to a slider, which slides on the inner surface of the fourth groove 3. The electric telescopic rod 33 is at the top of the slider. By moving the electric telescopic rod 33 with the slider, the purpose of moving the electric telescopic rod 33 with the mounting block 34 is further achieved.

[0031] Further, such as Figure 6 As shown, a rack 346 is fixedly mounted on one side of the clamping rod 343, and a gear 347 is meshed with the opposing surfaces of the two racks 346. A third motor 348 is fixedly connected to the top of the gear 347, and the third motor 348 is fixedly mounted on the top of the mounting block 34; A limiting tube 345 is fixedly mounted on one side of the mounting block 34 , and a seventh groove 3451 is defined in the inner cavity of the limiting tube 345 . A limiting rod 3452 is fixedly mounted on the outer surface of the rack 346 , and the limiting rod 3452 is slidably mounted on the inner surface of the seventh groove 3451 .

[0032] When the present invention is in use, the electric telescopic rod 33 is first extended so that the mounting block 34 is at a height higher than the clamping block 27, and then the electric telescopic rod 33 is lowered with the mounting block 34 so that the mounting block 34 is close to the top of the clamping block 27. After the denture is sintered, the output shaft of the third motor 348 drives the gear 347 to rotate, and the gear 347 makes the two clamping rods 343 approach each other. At this time, the sintered denture and the denture to be sintered will be between the clamping pieces 344 and clamped by the clamping pieces 344. Then the mounting block 34 is moved to move the denture to be sintered to the top of the sealing block 201, and the sintered denture is moved to the top of the other clamping block 27 for heat dissipation.

[0033] Working principle: First, place the denture on the top of the sealing block 201, and rotate the first threaded rod 21 through the output shaft of the first motor 22. The first threaded rod 21 drives the tray 2 to carry the sealing block 201 to the inner cavity of the first groove 11. The inner cavity of the first groove 11 is placed in a vacuum state by the vacuum pump, and the inner cavity of the first groove 11 is heated by the heating wire 12 to complete the sintering of the denture. After sintering, the tray 2 is driven downward by the first threaded rod 21 so that the top of the sealing block 201 and the top of the clamping block 27 are at the same height. At this time, the tray 2 will move downward with the connecting rod 23, and the connecting rod 23 will squeeze the first piston 241. The first piston 241 squeezes the water in the inner cavity of the first water pipe 24, so that the water flows evenly to the two second water pipes 25. The water in the inner cavity of the second water pipe 25 will push the second piston 26. The second piston 26 further pushes the clamping block 27 to move the two clamping blocks 27 to both sides of the sealing block 201.

[0034] At this time, the denture to be sintered is placed on the top of the clamping block 27 close to the mounting block 34, and the second threaded rod 31 is rotated by the output shaft of the second motor 32. The second threaded rod 31 drives the electric telescopic rod 33 and the mounting block 34 to move, and the mounting block 34 moves to both sides of the denture. The gear 347 is rotated by the output shaft of the third motor 348. The gear 347 makes the two racks 346 slide on the inner surface of the limiting tube 345. The rack 346 drives the two clamping rods 343 to approach each other so that the clip 344 clamps the denture, and then the mounting block 34 is moved, and the sintered denture is moved to the top of another clamping block 27, and the denture to be sintered is moved to the top of the sealing block 201.

[0035] Since the structure of adding a vacuum pump to the inner cavity of the furnace body 1 to put the inner cavity of the furnace body 1 into a vacuum state belongs to the prior art, it is not described in the present invention document.

[0036] Throughout this specification, references to terms such as "one embodiment," "example," or "specific example" indicate that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0037] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and modifications fall within the scope of the invention as claimed.

Claims

1. A vacuum high-temperature denture sintering furnace, comprising a furnace body (1), a tray (2) slidably mounted on one side of the furnace body (1), a sealing block (201) fixedly mounted on the top of the tray (2), and a heating wire (12) fixedly mounted in the inner cavity of the furnace body (1); It also includes a cooling mechanism for cooling the sintered denture; Its characteristics are: The cooling mechanism comprises two clamping blocks (27), the two clamping blocks (27) being slidably mounted on one side of the furnace body (1), a second threaded rod (31) being rotatably mounted on the top of the furnace body (1), the second threaded rod (31) being threadedly connected to an electric telescopic rod (33), an output end of the electric telescopic rod (33) being fixedly connected to a mounting block (34), a fifth groove (341) and a sixth groove (342) being provided on one side of the mounting block (34), a clamping rod (343) being slidably mounted on the inner surfaces of the fifth groove (341) and the sixth groove (342), and two clamping pieces (344) being fixedly mounted on one side of the clamping rod (343).

2. The vacuum high-temperature denture sintering furnace according to claim 1, characterized in that: A first groove (11) is provided on the top of the furnace body (1), and the heating wire (12) is fixedly installed in the inner cavity of the first groove (11). A second groove (13) is provided on one side of the furnace body (1), and a first motor (22) is fixedly installed on the inner surface of the second groove (13). The output shaft of the first motor (22) is fixedly connected to a first threaded rod (21). The tray (2) is slidably installed on the inner surface of the second groove (13), and the first threaded rod (21) is threadedly connected to the tray (2).

3. The vacuum high-temperature denture sintering furnace according to claim 2, characterized in that: A third groove (14) is formed on the inner wall of the second groove (13), and a connecting rod (23) is slidably mounted on the inner surface of the third groove (14), wherein the connecting rod (23) is fixedly connected to the tray (2).

4. The vacuum high-temperature denture sintering furnace according to claim 3, characterized in that: A first water pipe (24) is fixedly mounted on one side of the furnace body (1); a first piston (241) is slidably mounted in the inner cavity of the first water pipe (24); the first piston (241) is movably mounted on the bottom of the connecting rod (23); and a first spring (242) is fixedly mounted between the first piston (241) and the connecting rod (23).

5. The vacuum high-temperature denture sintering furnace according to claim 4, characterized in that: Two second water pipes (25) are fixedly connected to the outer surface of the first water pipe (24); a second piston (26) is slidably mounted in the inner cavity of the second water pipe (25); the second piston (26) is fixedly connected to a clamping block (27); a second spring (261) is fixedly connected between the clamping block (27) and the second piston (26); two support blocks (271) are fixedly mounted on the top of the furnace body (1); the clamping block (27) is slidably mounted on the top of the support block (271).

6. The vacuum high-temperature denture sintering furnace according to claim 5, characterized in that: A fourth groove (3) is provided on the top of the furnace body (1); the second threaded rod (31) is rotatably mounted on the inner surface of the fourth groove (3); one end of the second threaded rod (31) is fixedly connected to a second motor (32); and the second motor (32) is fixedly mounted on one side of the furnace body (1).

7. The vacuum high-temperature denture sintering furnace according to claim 6, characterized in that: A rack (346) is fixedly mounted on one side of the clamping rod (343), and a gear (347) is meshed with the opposing surfaces of the two racks (346). A third motor (348) is fixedly connected to the top of the gear (347), and the third motor (348) is fixedly mounted on the top of the mounting block (34).

8. The vacuum high-temperature denture sintering furnace according to claim 7, characterized in that: A limiting tube (345) is fixedly mounted on one side of the mounting block (34), a seventh groove (3451) is provided in the inner cavity of the limiting tube (345), a limiting rod (3452) is fixedly mounted on the outer surface of the rack (346), and the limiting rod (3452) is slidably mounted on the inner surface of the seventh groove (3451).

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