Zirconium oxide false tooth preparation device

Abstract

The invention relates to the technical field of false tooth preparation, and discloses a zirconium oxide false tooth preparation device which comprises a clamping disc arranged on a porcelain furnace, the porcelain furnace comprises a base and a furnace body, a mounting ring is rotatably mounted at the upper end of the base, the clamping disc is rotatably mounted on the inner side of the mounting ring, a plurality of placement grooves are formed in the upper end of the clamping disc, and the furnace body is arranged in the placement grooves. An arc-shaped sawtooth rod is rotatably installed in the annular groove, a plurality of sets of clamping teeth are fixedly installed on the inner side of a circular ring in the clamping disc, the clamping teeth are meshed with the arc-shaped sawtooth rod, a sliding rod connected with the circular ring is slidably arranged in an arc-shaped sliding groove of the clamping disc, and the lower end of the sliding rod is fixedly connected with an L-shaped column; after single false teeth are placed in a plurality of placing grooves, an L-shaped column is controlled to rotate, a plurality of circular rings are pushed to rotate through a sliding rod, a plurality of groups of clamping teeth move, a plurality of arc-shaped sawtooth rods are made to rotate, the false teeth are clamped and fixed, in the subsequent baking process, a clamping disc is controlled to rotate, and the false teeth cannot fall off.

Description

Technical Field

[0001] The present invention relates to the technical field of denture preparation, in particular to a zirconia denture preparation device. Background Art

[0002] Zirconia ceramics have become the material of choice in modern dentistry due to their unique physical and chemical properties. Dentures need to be fixed and placed during baking. Existing denture porcelain furnace fixing structures, such as the one disclosed in Authorization Announcement No. CN220385213U, include a base plate, a fixing plate fixedly connected to one side of the top of the base plate, and a housing connected to the other end of the fixing plate via a crossbar. The bottom end of the housing is provided with a mounting plate, a slot is defined at the top of the mounting plate, a base is inserted into the slot, and mounting chambers are fixedly connected to both sides of the top of the base. The inner sidewalls of the mounting chamber are fixedly connected to springs, and the other ends of the springs are fixedly connected to push blocks. Limiting grooves are defined on the front and rear sides of the inner sidewalls of the mounting chamber, and push blocks are connected to the limit blocks within the limit grooves. The denture to be baked is placed on the top of the base, and then the push block is pushed by the spring to move within the mounting chamber and extend out of the mounting chamber, thereby clamping and fixing the denture through the cooperation of the push blocks.

[0003] When firing existing dentures, the dentures are first placed on a firing tray and then inserted into a porcelain furnace. There are single dentures and multiple dentures fixed together. The above-mentioned existing technology is convenient for clamping multiple dentures fixed together, but it is relatively inconvenient to fix multiple individual dentures. At present, when placing multiple individual dentures, they are generally placed on a firing tray with multiple circular grooves, which is then placed on a porcelain furnace and then inserted into the furnace for firing. This placement cannot fix multiple individual dentures, and in order to ensure uniform firing, the firing tray is generally controlled to rotate during firing, and the dentures that are not fixed are easily thrown out. Summary of the Invention

[0004] In view of the shortcomings of the prior art, the present invention provides a zirconia denture preparation device, which is convenient for clamping and fixing multiple individual dentures when they are fired.

[0005] The cam is provided with a toothed plate, and the cam is provided with a toothed plate, and the toothed plate is provided with a toothed plate, and the toothed plate is provided with a toothed plate, and the cam ...

[0006] Preferably, the telescopic rod includes a support column fixedly connected to the lower end of the furnace body, a rotating rod is slidably provided at the lower end of the support column, the lower end of the rotating rod is rotatably connected to the base, and the first gear ring is fixedly sleeved on the rotating rod.

[0007] Preferably, the pushing member includes a cylinder fixedly installed in the base and an electric push rod, a support block fixedly installed on the upper end of the electric push rod, the support block is rotatably installed on the outside of the support column, the support column passes through the cylinder, and vertical grooves and arc grooves that are interconnected are opened on the outside of the support column, and a slider that slides with the vertical groove and arc groove is fixedly installed on the inner wall of the cylinder.

[0008] Preferably, the clamping member comprises an arcuate sawtooth rod rotatably mounted in the annular groove, wherein the saw teeth of the arcuate sawtooth rod are located at an end thereof.

[0009] Preferably, the rotating part includes a plurality of circular rings rotatably mounted in the clamping disk, a plurality of sets of latches are fixedly mounted on the inner side of the circular rings, the latches are engaged with the arc-shaped serrated rods, the portion of the circular rings with latches is located in the annular groove, a plurality of arc-shaped grooves are provided at the bottom of the clamping disk, the lower ends of the circular rings are fixedly connected with sliding rods, the sliding rods are slidably connected to the arc-shaped grooves, and the lower ends of the plurality of sliding rods are fixedly connected to the L-shaped columns.

[0010] Preferably, the connecting member includes a serrated rod slidably connected to the base, a second gear ring is fixedly sleeved at the lower end of the L-shaped column, the serrated rod is engaged with the first gear ring and the second gear ring, and the serrations on the serrated rod at one end of the first gear ring are more than the serrations on the other end of the second gear ring.

[0011] Preferably, the power assembly includes a motor fixedly installed in the base, a gear is fixedly installed at the output end of the motor, an annular sleeve is provided on the outer rotating sleeve of the L-shaped column, a third gear ring is provided on the outer fixed sleeve of the annular sleeve that meshes with the gear, a connecting rod is fixedly provided between the annular sleeve and the mounting ring, and a limiting member is provided between the annular sleeve and the L-shaped column.

[0012] Preferably, the limiting member includes a connecting ring fixedly sleeved on the outside of the L-shaped column, a plurality of elastic rings are fixedly installed at equal intervals on the outside of the connecting ring, the number of the elastic rings is the same as the number of serrations of the second gear ring, a limiting ring for limiting the elastic ring is fixedly installed in the annular sleeve, a groove is provided at the lower end of the annular sleeve, an annular arc-shaped protrusion and an L-shaped plug-in block are slidably provided in the groove, the arc-shaped protrusion is fixedly connected to the L-shaped plug-in block, one end of the L-shaped plug-in block is used to insert the elastic ring for limiting, a plurality of springs are fixedly arranged between the arc-shaped protrusion and the groove, the serrated rod is provided with a notch at one end of the second gear ring, and part of the serrated rod is in sliding contact with the arc-shaped protrusion.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. The present invention provides an annular groove at the bottom of the placement groove of the clamping disk, and a curved serrated rod is rotatably installed in the annular groove. The serrations of the curved serrated rod are located at its end, and multiple groups of latches are fixedly installed on the inner side of the circular ring in the clamping disk. The latches engage with the curved serrated rod, and the portion of the circular ring with latches is located in the annular groove. A sliding rod connected to the circular ring is slidably set in the arcuate slide groove of the clamping disk, and the lower end of the sliding rod is fixedly connected to the L-shaped column. After individual dentures are placed in multiple placement grooves respectively, the L-shaped column is controlled to rotate, and the multiple circular rings are pushed to rotate by the sliding rod, and the multiple groups of latches move, so that the multiple curved serrated rods are rotated to clamp and fix the multiple dentures. In the subsequent baking process, the clamping disk is controlled to rotate, and the dentures will not fall off.

[0015] 2. The present invention installs a cylinder and an electric push rod in the base, and the support block at the upper end of the electric push rod is rotatably connected to the support column at the lower end of the furnace body. Vertical grooves and arc grooves that are interconnected are provided on the outside of the support column. A slider that slides in the vertical groove and the arc groove is fixedly installed on the inner wall of the cylinder. By starting the electric push rod, the slider first slides in the vertical groove to separate the furnace body from the clamping plate, and then the slider slides in the arc groove to rotate the furnace body, thereby preventing the furnace body from being too close to the clamping plate, making it convenient to place and take out dentures.

[0016] 3. The present invention sets a serrated rod by sliding on the base, and fixes a second gear ring on the lower end of the L-shaped column. The serrated rod is engaged with the first gear ring and the second gear ring. The serrations on the serrated rod at one end of the first gear ring are redundant with the serrations on one end of the second gear ring. When controlling the rotation of the furnace body, the first gear ring will be driven to rotate, and the first gear ring will push the serrated rod to move. The serrated rod will initially push the second gear ring to rotate, which is used to control the rotation of the arc-shaped serrated rod to clamp and fix multiple dentures. The subsequent movement of the serrated rod will not engage with the second gear ring, which is convenient for subsequent control of the synchronous rotation of the clamping plate and the mounting ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention;

[0018] Figure 2 A schematic diagram of a three-dimensional cross-sectional structure of the base of the present invention;

[0019] Figure 3 is another schematic diagram of a three-dimensional cross-sectional structure of the base of the present invention;

[0020] Figure 4 for Figure 3 Schematic diagram of the enlarged structure of A;

[0021] Figure 5 for Figure 3 Schematic diagram of the enlarged structure of B;

[0022] Figure 6 This is a schematic structural diagram of the positional relationship between the connector and the power assembly of the present invention;

[0023] Figure 7 for Figure 6 Schematic diagram of the enlarged structure of D in the middle;

[0024] Figure 8 It is a schematic diagram of the cross-sectional structure of the clamping plate of the present invention when viewed from above;

[0025] Figure 9 for Figure 8 Schematic diagram of the enlarged structure of C in the middle;

[0026] Figure 10 It is a schematic diagram of the three-dimensional structure of the rotating part of the present invention;

[0027] Figure 11 This is a schematic diagram of the connection structure between the arc-shaped sawtooth rod and the circular ring of the present invention;

[0028] Figure 12 A schematic diagram of the three-dimensional cross-sectional structure of the annular sleeve of the present invention.

[0029] In the figure: 1. base; 2. furnace body; 3. mounting ring; 4. clamping plate; 5. placement groove; 6. support column; 7. cylinder; 8. arc groove; 9. support block; 10. rotating rod; 11. serrated rod; 12. annular sleeve; 13. third gear ring; 14. motor; 15. gear; 16. first gear ring; 17. electric push rod; 18. vertical groove; 19. slide rod; 20. connecting rod; 21. circular ring; 22. L-shaped column; 23. second gear ring; 24. arc-shaped protrusion; 25. annular groove; 26. arc-shaped serrated rod; 27. latching teeth; 28. limiting ring; 29. ​​notch; 30. slide block; 31. connecting ring; 32. spring; 33. L-shaped plug block; 34. elastic ring; 35. arc-shaped slide groove; 36. groove. DETAILED DESCRIPTION

[0030] The following embodiments of the present disclosure are further described in detail with reference to the accompanying drawings and examples. The detailed description of the following examples and the accompanying drawings are intended to illustrate the principles of the present disclosure, but are not intended to limit the scope of the present disclosure. The present disclosure can be implemented in many different forms and is not limited to the specific embodiments disclosed herein, but rather includes all technical solutions within the scope of the claims.

[0031] See also Figures 1-12 A zirconia denture preparation device includes a clamping plate 4 arranged on a porcelain furnace, and the porcelain furnace includes a base 1 and a furnace body 2 ( Figure 1 In the fired state, Figure 2-Figure 12The furnace body 2 is in a state of being rotated and opened), a mounting ring 3 is rotatably installed on the upper end of the base 1, and a clamping plate 4 is rotatably installed on the inner side of the mounting ring 3. A plurality of placement grooves 5 are provided on the upper end of the clamping plate 4, and an annular groove 25 is provided at the bottom of the placement groove 5. A clamping piece is rotatably installed in the annular groove 25. A telescopic rod is fixedly installed on the lower end of the furnace body 2, and the lower end of the telescopic rod is located in the base 1 and is fixedly sleeved with a first gear ring 16. The telescopic rod includes a support column 6 fixedly connected to the lower end of the furnace body 2, and a rotating rod 10 is slidably provided at the lower end of the support column 6. The lower end of the rotating rod 10 is rotatably connected to the base 1, and the first gear ring 16 is fixedly sleeved on the rotating rod 10. A pushing member for controlling the lifting and rotation of the telescopic rod is provided in the base 1, and the pushing member includes a cylinder 7 and an electric push rod 17 fixedly installed in the base 1. A support block 9 is fixedly installed on the upper end of the electric push rod 17, and the support block 9 is rotatably mounted on the outside of the support column 6. The support column 6 passes through the cylinder 7. The outer side of the support column 6 is provided with a vertical groove 18 and an arc groove 8 that are interconnected. The inner wall of the cylinder 7 is fixedly installed with a slider 30 that slides with the vertical groove 18 and the arc groove 8. When placing the denture, the electric push rod 17 is started to push the support block 9 to move up, and the support block 9 pushes the support column 6 to move up, and the slider 30 slides in the vertical groove 18, and the support column 6 pushes the furnace body 2 to move up and disengage from the clamping plate 4. The electric push rod 17 continues to work, and then the slider 30 slides in the arc groove 8, so that the furnace body 2 rotates to prevent the furnace body 2 from being too close to the clamping plate 4, which is convenient for placing and taking the denture. After the denture is placed, the electric push rod 17 is started to push the support block 9 to move down, and the support block 9 pushes the support column 6 to move down, and the slider 30 slides in the arc groove 8 first, so that the furnace body 2 rotates and resets, and the electric push rod 17 continues to work, and then the slider 30 slides in the vertical groove 18, so that the furnace body 2 moves down, and the clamping plate 4 enters the furnace body 2;

[0032] An L-shaped column 22 is rotatably installed in the base 1, and a rotating member for controlling the rotation of the clamping member is provided on the clamping disk 4. The lower end of the rotating member is fixedly connected to the L-shaped column 22. A connecting member is provided between the L-shaped column 22 and the first gear ring 16. The connecting member is used to control the rotation of the L-shaped column 22. The clamping member includes an arcuate serrated rod 26 rotatably installed in the annular groove 25. The teeth of the arcuate serrated rod 26 are located at its end. The rotating member includes a plurality of circular rings 21 rotatably installed in the clamping disk 4. A plurality of groups of latch teeth 27 are fixedly installed on the inner side of the circular ring 21. The latch teeth 27 mesh with the arcuate serrated rod 26. The portion of the circular ring 21 with the latch teeth 27 is located in the annular groove 25. A plurality of arcuate slide grooves 35 are provided at the bottom of the clamping disk 4. The lower end of the circular ring 21 is fixedly connected to a slide rod 19. The slide rod 19 is connected to the arcuate shaped slide groove 35 is slidably connected, and the lower ends of multiple slide rods 19 are fixedly connected to the L-shaped column 22. The connecting part includes a serrated rod 11 slidably connected to the base 1. The lower end of the L-shaped column 22 is fixedly sleeved with a second gear ring 23. The serrated rod 11 is engaged with the first gear ring 16 and the second gear ring 23. The serrations of the serrated rod 11 at one end of the first gear ring 16 are redundant with the serrations at one end of the second gear ring 23. In the above work, before placing the dentures, the electric push rod 17 works, causing the slider 30 to slide in the arc groove 8 so that the furnace body 2 rotates away from the clamping plate 4. The support column 6 rotates, and the support column 6 drives the rotating rod 10 to rotate. The rotating rod 10 drives the first gear ring 16 to rotate. The first gear ring 16 pushes the serrated rod 11 to move, and the serrated rod 11 pushes the second gear ring 23 to rotate (due to the serrations The serrations on one end of the first gear ring 16 of the rod 11 are more than the serrations on one end of the second gear ring 23. The first gear ring 16 pushes the serrated rod 11 to move. The serrated rod 11 does not mesh with the second gear ring 23 at first. Then the serrated rod 11 moves and meshes with the second gear ring 23, driving the second gear ring 23 to rotate). The second gear ring 23 drives the L-shaped column 22 to rotate. The L-shaped column 22 drives multiple slide rods 19 to slide in the arc-shaped slide groove 35. The slide rod 19 pushes the circular ring 21 to rotate. The circular ring 21 drives multiple groups of latch teeth 27 to move, so that the multiple arc-shaped serrated rods 26 rotate without hindering the placement of the dentures. Then, after the individual dentures are placed in the multiple placement slots 5 respectively, according to the above steps, the electric push rod 17 works, so that when the furnace body 2 rotates and resets, the support column 6 reverses. After reset, the support column 6 drives the rotating rod 10 to rotate, the rotating rod 10 drives the first gear ring 16 to rotate, the first gear ring 16 drives the serrated rod 11 to move, and the serrated rod 11 drives the second gear ring 23 to rotate (because the serrated rod 11 has more serrations at one end of the first gear ring 16 than at one end of the second gear ring 23, the first gear ring 16 drives the serrated rod 11 to move, and the serrated rod 11 initially drives the second gear ring 23 to rotate, and then the serrated rod 11 moves and does not mesh with the second gear ring 23, and the second gear ring 23 does not rotate), the second gear ring 23 drives the L-shaped column 22 to rotate, the L-shaped column 22 drives multiple slide rods 19 to slide in the arc-shaped slot 35, the slide rod 19 drives the circular ring 21 to rotate, and the circular ring 21 drives multiple groups of latch teeth 27 to move, thereby clamping and fixing multiple dentures;

[0033] A power assembly for controlling the synchronous rotation of the clamping disc 4 and the mounting ring 3 is also provided in the base 1 .

[0034] As a further technical solution of the present invention, the power assembly includes a motor 14 fixedly mounted in the base 1, a gear 15 is fixedly mounted on the output end of the motor 14, an annular sleeve 12 is provided on the outer side of the L-shaped column 22, and a third gear ring 13 is provided on the outer side of the annular sleeve 12 to engage with the gear 15. A connecting rod 20 is fixedly provided between the annular sleeve 12 and the mounting ring 3, and a limiting member is provided between the annular sleeve 12 and the L-shaped column 22. The limiting member includes a connecting ring 31 fixedly mounted on the outer side of the L-shaped column 22, and a plurality of elastic rings 34 are fixedly mounted on the outer side of the connecting ring 31 at equal intervals. The elastic ring 3 The number of teeth of the second gear ring 23 is the same as that of the saw teeth of the second gear ring 23. A limiting ring 28 for limiting the elastic ring 34 is fixedly installed in the annular sleeve 12. A groove 36 is provided at the lower end of the annular sleeve 12. A ring-shaped arc-shaped protrusion 24 and an L-shaped plug 33 are slidingly provided in the groove 36. The arc-shaped protrusion 24 is fixedly connected to the L-shaped plug 33. The lower end of the L-shaped plug 33 is used to insert the elastic ring 34 for limiting. A plurality of springs 32 are fixedly provided between the arc-shaped protrusion 24 and the groove 36. A notch 29 is provided at one end of the sawtooth rod 11 at the second gear ring 23. Part of the position of the sawtooth rod 11 is aligned with the arc-shaped protrusion 2 4 sliding contact. In the above operation, when the electric push rod 17 works to control the furnace body 2 to move away from the clamping plate 4, the sawtooth rod 11 does not engage with the second toothed ring 23 at the beginning (during this process, the upper end of the sawtooth rod 11 squeezes the arc-shaped protrusion 24, the spring 32 is squeezed, and one end of the L-shaped plug 33 is inserted into one of the elastic rings 34). Then the sawtooth rod 11 moves and disengages from the squeezed arc-shaped protrusion 24. Due to the action of the spring 32, the L-shaped plug 33 disengages from the elastic ring 34. After the denture is placed, the electric push rod 17 works to control the furnace body 2 to reset, and the sawtooth rod 11 starts to engage with the second toothed ring 23. (During this process, the serrated rod 11 moves, and due to the presence of the notch 29, the serrated rod 11 does not contact the arc-shaped protrusion 24), and then the serrated rod 11 moves and does not engage with the second gear ring 23 (at this time, the serrated rod 11 contacts the arc-shaped protrusion 24, squeezing the arc-shaped protrusion 24, the spring 32 is squeezed, and one end of the L-shaped plug 33 is inserted into one of the elastic rings 34). At this time, firing is performed, and then the motor 14 is started. Through the cooperation of the gear 15 and the third gear ring 13, the annular sleeve 12 is driven to rotate, and through the connecting rod 20 and the L-shaped plug 33, the mounting ring 3 and the clamping disk 4 can be driven to rotate synchronously.

[0035] Working principle:

[0036] Now, the description begins with the state that the furnace body 2 is rotated and opened ( Figure 1 In the fired state, Figure 2-Figure 12 The furnace body 2 is rotated and opened);

[0037] After the furnace body 2 is rotated and opened, individual dentures are placed in the multiple placement slots 5, and then the electric push rod 17 is started to work. The electric push rod 17 pushes the support block 9 to move downward, and the support block 9 pushes the support column 6 to move downward. The slider 30 first slides in the arc groove 8, driving the support column 6 to rotate, and the support column 6 drives the furnace body 2 to rotate and reset;

[0038] The support column 6 also drives the rotating rod 10 to rotate, and the rotating rod 10 drives the first gear ring 16 to rotate. The first gear ring 16 pushes the sawtooth rod 11 to move, and the sawtooth rod 11 drives the second gear ring 23 to rotate (because the sawtooth rod 11 has more saw teeth at one end of the first gear ring 16 than at one end of the second gear ring 23, the sawtooth rod 11 initially pushes the second gear ring 23 to rotate, and then the sawtooth rod 11 moves and does not engage with the second gear ring 23, and the second gear ring 23 does not rotate), and the second gear ring 23 drives the L-shaped column 22 to rotate (the second gear ring 23 is in the state of rotation). During the process, the serrated rod 11 moves. Due to the presence of the notch 29, the serrated rod 11 does not contact the arc-shaped protrusion 24. The L-shaped column 22 drives the multiple sliding rods 19 to slide in the arc-shaped slot 35. The sliding rods 19 push the ring 21 to rotate, and the ring 21 drives the multiple sets of latch teeth 27 to move, thereby clamping and fixing multiple dentures. When the second gear ring 23 does not rotate, the serrated rod 11 moves. At this time, the serrated rod 11 contacts the arc-shaped protrusion 24, squeezing the arc-shaped protrusion 24, squeezing the spring 32, and inserting one end of the L-shaped insert 33 into one of the elastic rings 34.

[0039] The electric push rod 17 continues to work, and then the slider 30 slides in the vertical slot 18, causing the furnace body 2 to move downward, and the clamping plate 4 enters the furnace body 2 to start the firing process;

[0040] Then, the motor 14 is started, which drives the gear 15 to rotate, which drives the third gear ring 13 to rotate, which drives the annular sleeve 12 to rotate, and the annular sleeve 12 drives the connecting rod 20 and the L-shaped insert 33 to move, so that the mounting ring 3 and the clamping plate 4 rotate synchronously, and the denture will not be thrown out during the firing process;

[0041] After firing is completed, the motor 14 (each rotation of the motor 14 is an integer circle) stops working, and then the electric push rod 17 is started to push the support block 9 upward. The furnace body 2 first moves up to separate from the clamping plate 4, and then rotates away from the clamping plate 4, making it easier to place and take out the dentures.

[0042] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the above embodiments, it is obvious to those skilled in the art that the features thereof can be replaced with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the scope of protection of the present invention.

[0043] The technical principles of the present invention have been described above with reference to specific embodiments. These descriptions are intended solely to illustrate the principles of the present invention and are not to be construed in any way as limiting the scope of protection of the present invention. Based on the explanations herein, those skilled in the art will readily devise other specific embodiments of the present invention without inventive effort, and such embodiments will fall within the scope of protection of the claims of the present invention.

Claims

1. A zirconia denture preparation device, comprising a clamping plate (4) arranged on a porcelain furnace, characterized in that: The porcelain furnace comprises a base (1) and a furnace body (2), wherein a mounting ring (3) is rotatably mounted on the upper end of the base (1), and the clamping plate (4) is rotatably mounted on the inner side of the mounting ring (3). A plurality of placement grooves (5) are provided on the upper end of the clamping plate (4), and an annular groove (25) is provided at the bottom of the placement groove (5). A clamping piece is rotatably mounted in the annular groove (25). A telescopic rod is fixedly mounted on the lower end of the furnace body (2), and the lower end of the telescopic rod is located in the base (1) and is fixedly sleeved with a first gear ring (16). A pushing member for controlling the lifting and rotation of the telescopic rod is provided in the base (1); an L-shaped column (22) is rotatably installed in the base (1); a rotating member for controlling the rotation of the clamping member is provided on the clamping disk (4); the lower end of the rotating member is fixedly connected to the L-shaped column (22); a connecting member is provided between the L-shaped column (22) and the first gear ring (16); the connecting member is used to control the rotation of the L-shaped column (22); and a power assembly for controlling the synchronous rotation of the clamping disk (4) and the mounting ring (3) is also provided in the base (1).

2. A zirconia denture preparation device according to claim 1, characterized in that: The telescopic rod comprises a support column (6) fixedly connected to the lower end of the furnace body (2); a rotating rod (10) is slidably provided at the lower end of the support column (6); the lower end of the rotating rod (10) is rotatably connected to the base (1); and the first gear ring (16) is fixedly sleeved on the rotating rod (10).

3. A zirconia denture preparation device according to claim 2, characterized in that: The pushing member comprises a cylinder (7) and an electric push rod (17) fixedly mounted in the base (1); a support block (9) is fixedly mounted on the upper end of the electric push rod (17); the support block (9) is rotatably mounted on the outside of a support column (6); the support column (6) passes through the cylinder (7); a vertical groove (18) and an arc groove (8) that are interconnected are opened on the outside of the support column (6); a slider (30) that slides with the vertical groove (18) and the arc groove (8) is fixedly mounted on the inner wall of the cylinder (7).

4. A zirconia denture preparation device according to claim 3, characterized in that: The clamping member comprises an arc-shaped sawtooth rod (26) rotatably mounted in an annular groove (25), wherein the saw teeth of the arc-shaped sawtooth rod (26) are located at the end thereof.

5. A zirconia denture preparation device according to claim 4, characterized in that: The rotating member comprises a plurality of circular rings (21) rotatably mounted in the clamping disk (4), a plurality of groups of latch teeth (27) are fixedly mounted on the inner side of the circular rings (21), the latch teeth (27) are engaged with the arc-shaped sawtooth rod (26), the portion of the circular rings (21) with the latch teeth (27) is located in the annular groove (25), a plurality of arc-shaped sliding grooves (35) are provided at the bottom of the clamping disk (4), the lower ends of the circular rings (21) are fixedly connected with sliding rods (19), the sliding rods (19) are slidably connected to the arc-shaped sliding grooves (35), and the lower ends of the plurality of sliding rods (19) are fixedly connected to the L-shaped columns (22).

6. A zirconia denture preparation device according to claim 5, characterized in that: The connecting member comprises a sawtooth rod (11) slidably connected to the base (1); a second toothed ring (23) is fixedly sleeved on the lower end of the L-shaped column (22); the sawtooth rod (11) is engaged with the first toothed ring (16) and the second toothed ring (23); and the sawtooth rod (11) has more sawteeth at one end of the first toothed ring (16) than at one end of the second toothed ring (23).

7. A zirconia denture preparation device according to claim 6, characterized in that: The power assembly comprises a motor (14) fixedly mounted in a base (1); a gear (15) is fixedly mounted on the output end of the motor (14); an annular sleeve (12) is provided on the outer rotating sleeve of the L-shaped column (22); a third gear ring (13) meshing with the gear (15) is provided on the outer fixed sleeve of the annular sleeve (12); a connecting rod (20) is fixedly arranged between the annular sleeve (12) and the mounting ring (3); and a limiting member is provided between the annular sleeve (12) and the L-shaped column (22).

8. The zirconia denture preparation device according to claim 7, characterized in that: The limiting member comprises a connecting ring (31) fixedly mounted on the outside of the L-shaped column (22); a plurality of elastic rings (34) are fixedly mounted at equal intervals on the outside of the connecting ring (31); the number of the elastic rings (34) is the same as the number of serrations of the second gear ring (23); a limiting ring (28) for limiting the elastic ring (34) is fixedly mounted in the annular sleeve (12); a groove (36) is provided at the lower end of the annular sleeve (12); an annular ring (36) is slidably arranged in the groove (36). The arc-shaped protrusion (24) and the L-shaped plug-in block (33) are fixedly connected to each other, one end of the L-shaped plug-in block (33) is used to insert the elastic ring (34) for limiting, a plurality of springs (32) are fixedly arranged between the arc-shaped protrusion (24) and the groove (36), a notch (29) is opened at one end of the sawtooth rod (11) located at the second gear ring (23), and a part of the sawtooth rod (11) is in sliding contact with the arc-shaped protrusion (24).

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