Denture sintering device
By using a servo motor-driven threaded rod and gear transmission system, the problem of uneven cooling in the denture sintering device was solved, achieving rapid and uniform cooling and heating, and improving sintering efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANGHAI SUCHENG DENTURE CO LTD
- Filing Date
- 2025-06-23
- Publication Date
- 2026-06-09
AI Technical Summary
Existing denture sintering devices typically use natural cooling during the cooling process, which wastes time and leads to uneven heat distribution, affecting efficiency.
A servo motor-driven threaded rod and gear transmission system are used to control the entry and exit of the cooling box and the rotation of the denture, achieving rapid and uniform cooling and heating.
The cooling rate was increased, the cooling time was reduced, and the heat distribution of the denture within the sintering apparatus was ensured to be uniform, thereby improving the sintering efficiency.
Smart Images

Figure CN224340683U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of dental prosthesis processing technology, and more specifically, it relates to a dental prosthesis sintering device. Background Technology
[0002] With the continuous development of medical technology, denture restoration technology has become an important branch of oral medicine. In the denture restoration process, a sintering furnace is used to sinter the denture for porcelain bonding. Sintering is a crucial step, involving the curing, hardness, and stability improvement of the denture material. Therefore, a denture sintering furnace is a device that uses high-temperature sintering technology to heat zirconia material to a certain temperature, causing the particles to bond together and form a strong denture substrate.
[0003] Based on the above, the following problems were found: After the existing dentures are sintered, they need to be left to cool down inside the sintering device. Cooling is usually done naturally, which not only wastes a lot of time but also occupies the sintering device and prevents the dentures from being sintered. At the same time, the existing dentures are usually in a static state inside the sintering device, but the sintering device is not heated in all directions, which can easily lead to some areas having higher temperatures, resulting in uneven heating of the dentures during sintering.
[0004] Therefore, in view of this, we have studied and improved the existing structure and its shortcomings, and provided a denture sintering device to achieve a more practical purpose. Utility Model Content
[0005] To solve the above-mentioned technical problems, this utility model provides a denture sintering device to address the issue that current cooling methods typically involve natural cooling, which not only wastes a lot of time but also occupies the sintering device and prevents the denture from being sintered further.
[0006] This utility model provides a denture sintering device, which is achieved by the following specific technical means:
[0007] A denture sintering apparatus includes a sintering chamber, a chamber door hinged to the middle of one side of the outer wall of the sintering chamber, the sintering chamber being hollow and double-layered, a cooling box movably sleeved inside the sintering chamber on the side away from the chamber door, a heat insulation plate fixed to the side of the cooling box near the sintering chamber, a first servo motor fixed to the bottom of one side of the outer wall of the sintering chamber, a threaded rod fixed to the power output end of the first servo motor, threaded sleeves threaded through both sides of the middle of the threaded rod, transmission rods hinged to one side of each of the two threaded sleeves, the two transmission rods hinged to the bottom of one side of the heat insulation plate, a partition plate fixed to the middle of the interior of the sintering chamber, a holding tray movably mounted on the top of the partition plate, and a rotating mechanism provided at the bottom of the holding tray.
[0008] Furthermore, the threads at both ends of the threaded rod are in opposite directions, and the threaded rod moves through the outer wall of the sintering chamber and is rotatably connected to the inner wall of the sintering chamber. The threaded rod is located inside the hollow cavity of the sintering chamber.
[0009] Furthermore, the length of the transmission rod is adapted to the width of the inner wall of the sintering chamber, and the width of the heat insulation plate is adapted to the width of the inner cavity of the sintering chamber.
[0010] Furthermore, the rotating mechanism includes a second servo motor, which is fixed to the lower center of one side of the inner wall of the sintering chamber via a support rod, and a drive gear is fixed to the power output end of the second servo motor.
[0011] Furthermore, a connecting shaft is fixed to the bottom of the holding tray, and the connecting shaft is rotatably connected to the middle of the partition plate. A driven gear is fixed to the bottom of the connecting shaft. The driven gear and the driving gear mesh with each other, and the diameter of the root circle of the driven gear is greater than the diameter of the root circle of the driving gear.
[0012] Furthermore, the interior of the cooling box is hollow, and a water outlet pipe is fixed through the top of one side of the cooling box, while a water inlet pipe is fixed through the bottom of one side of the cooling box.
[0013] Furthermore, the sintering chamber door and the holding tray are located on the same horizontal plane, a second connecting block is fixed to one end of the sintering chamber door, and a first connecting block is fixed to the middle of one side of the sintering chamber. The first connecting block and the second connecting block are used together.
[0014] Compared with the prior art, the present invention has the following beneficial effects:
[0015] 1. In this utility model, the rotation of the first servo motor drives the threaded rod to rotate, and the transmission rod pushes the cooling box out of the sintering chamber. At this time, the heat insulation plate is located in the middle of the cooling box and the sintering chamber, so that the heat is not absorbed by the cooling box during sintering. After sintering is completed, the cooling box is controlled to enter the sintering chamber to quickly absorb the heat inside the sintering chamber, thereby increasing the cooling speed, reducing the cooling time of the denture inside the sintering device, and improving the sintering efficiency.
[0016] 2. In this utility model, the rotation of the second servo motor drives the rotation of the drive gear, which in turn drives the driven gear to rotate slowly, thereby causing the holding tray to rotate slowly. This allows the dentures inside the holding tray to be heated more evenly. Through the transmission between the driven gear and the drive gear, the second servo motor is prevented from being directly affected by the heat transfer from the connecting shaft, thus achieving the effect of rotating and heating the dentures while minimizing the impact of heat on the rotating device. Attached Figure Description
[0017] Figure 1 This is a side view of the overall structure of this utility model.
[0018] Figure 2 This is a schematic diagram of the internal structure of the sintering chamber of this utility model.
[0019] Figure 3 This is a front view structural diagram of the sintering chamber of this utility model.
[0020] Figure 4 This is a schematic diagram of the cooling box structure of this utility model.
[0021] Figure 5 This is a cross-sectional structural diagram of the present invention.
[0022] The correspondence between the component names in the diagram and the attached drawing numbers is as follows:
[0023] 1. Sintering chamber; 2. Chamber door; 3. First connecting block; 4. Second connecting block; 5. First servo motor; 6. Threaded rod; 7. Threaded sleeve; 8. Transmission rod; 9. Heat insulation plate; 10. Cooling box; 11. Water outlet pipe; 12. Water inlet pipe; 13. Partition plate; 14. Second servo motor; 15. Drive gear; 16. Driven gear; 17. Connecting shaft; 18. Container tray. Detailed Implementation
[0024] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.
[0025] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more; in addition, the terms "first," "second," "third," etc. are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0026] Example:
[0027] As attached Figure 1 To be continued Figure 5 As shown:
[0028] This utility model provides a denture sintering device, including a sintering chamber 1. A chamber door 2 is hinged to the middle of one side of the outer wall of the sintering chamber 1. The sintering chamber 1 is hollow and double-layered. A cooling box 10 is movably sleeved inside the side of the sintering chamber 1 away from the chamber door 2. A heat insulation plate 9 is fixed to the side of the cooling box 10 near the sintering chamber 1. A first servo motor 5 is fixed to the bottom of one side of the outer wall of the sintering chamber 1. A threaded rod 6 is fixed to the power output end of the first servo motor 5. Threaded sleeves 7 are threadedly connected to both sides of the middle of the threaded rod 6. A transmission rod 8 is hinged to one side of each of the two threaded sleeves 7. The two transmission rods 8 are hinged to the bottom of one side of the heat insulation plate 9. A partition plate 13 is fixed to the middle of the interior of the sintering chamber 1. A holding tray 18 is movably installed on the top of the partition plate 13. A rotating mechanism is provided at the bottom of the holding tray 18.
[0029] The threads at both ends of the threaded rod 6 are in opposite directions, and the threaded rod 6 moves through the outer wall of the sintering chamber 1 and is rotatably connected to the inner wall of the sintering chamber 1. The threaded rod 6 is located inside the hollow cavity of the sintering chamber 1. The first servo motor 5 drives the threaded rod 6 to rotate, which in turn drives the two threaded sleeves 7 to move in opposite directions on the threaded rod 6, thereby changing the included angle between the two transmission rods 8.
[0030] The length of the transmission rod 8 is matched with the width of the inner wall of the sintering chamber 1, and the width of the heat insulation plate 9 is matched with the width of the inner cavity of the sintering chamber 1. When the two transmission rods 8 are parallel, the transmission rods 8 push the cooling box 10 out of the sintering chamber 1. At this time, the heat insulation plate 9 is located in the middle of the cooling box 10 and the sintering chamber 1, so that the heat during sintering will not be absorbed by the cooling box 10. After sintering is completed, the cooling box 10 is then controlled to enter the sintering chamber 1 to quickly absorb the heat inside the sintering chamber 1.
[0031] The rotating mechanism includes a second servo motor 14, which is fixed to the lower middle part of one side of the inner wall of the sintering chamber 1 by a support rod. The power output end of the second servo motor 14 is fixed with a drive gear 15. The drive gear 15 is driven to rotate by the rotation of the second servo motor 14. The second servo motor 14 is located at the bottom of the partition plate 13 and is less affected by heat during heating.
[0032] The bottom of the holding tray 18 is fixed with a connecting shaft 17, which is rotatably connected to the middle of the partition plate 13. A driven gear 16 is fixed at the bottom of the connecting shaft 17. The driven gear 16 and the driving gear 15 mesh with each other. The diameter of the root circle of the driven gear 16 is larger than that of the root circle of the driving gear 15. The driving gear 15 drives the driven gear 16 to rotate slowly, which in turn drives the holding tray 18 to rotate slowly. This allows the dentures inside the holding tray 18 to be heated more evenly. Through the transmission between the driven gear 16 and the driving gear 15, the second servo motor 14 is prevented from being directly affected by the heat transfer of the connecting shaft 17.
[0033] The cooling tank 10 is hollow inside, with a water outlet pipe 11 fixed through the top of one side and a water inlet pipe 12 fixed through the bottom of one side. When cooling is needed, water is injected into the cooling tank 10 through the water inlet pipe 12. When the water temperature inside the cooling tank 10 is high after frequent use, water can be released from the water outlet pipe 11 and new cooling water can be injected.
[0034] The sintering chamber 2 and the holding tray 18 are located on the same horizontal plane. A second connecting block 4 is fixed to one end of the sintering chamber 2, and a first connecting block 3 is fixed to the middle of one side of the sintering chamber 1. The first connecting block 3 and the second connecting block 4 are used together. The smaller sintering chamber 2 reduces the outflow of heat during sintering. The sintering chamber 2 can be closed and opened by connecting and separating the first connecting block 3 and the second connecting block 4.
[0035] The specific usage and function of this embodiment are as follows:
[0036] In this invention, the chamber door 2 is first opened, and the denture to be sintered is placed in the center of the holding tray 18. At this time, the inside of the sintering chamber 1 is heated, and simultaneously the second servo motor 14 is started. The second servo motor 14 is located at the bottom of the partition plate 13, so it is less affected by heat during heating. The rotation of the second servo motor 14 drives the drive gear 15 to rotate, which in turn drives the driven gear 16 to rotate slowly, thereby causing the holding tray 18 to rotate slowly. This ensures that the denture inside the holding tray 18 is heated more evenly. The transmission between the driven gear 16 and the drive gear 15 avoids the second servo motor 14 being directly affected by heat transfer from the connecting shaft 17, while simultaneously controlling the second servo motor 14 to rotate. A servo motor 5 rotates, driving the threaded rod 6 to rotate, which in turn drives the two threaded sleeves 7 to move in opposite directions on the threaded rod 6, changing the included angle between the two transmission rods 8. The transmission rods 8 push the cooling box 10 out of the sintering chamber 1. At this time, the heat insulation plate 9 is located in the middle of the cooling box 10 and the sintering chamber 1, so that the heat during sintering will not be absorbed by the cooling box 10. After sintering is completed, the cooling box 10 is controlled to enter the sintering chamber 1 to quickly absorb the heat inside the sintering chamber 1. Water is injected into the cooling box 10 through the water inlet pipe 12. When the water temperature inside the cooling box 10 is high after frequent use, water can be released from the water outlet pipe 11 and new cooling water can be injected.
[0037] The embodiments of this utility model are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the utility model to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical applications of this utility model, and to enable those skilled in the art to understand this utility model and design various embodiments with various modifications suitable for a particular purpose.
Claims
1. A denture sintering apparatus, comprising a sintering chamber (1), wherein a chamber door (2) is hinged to the middle of one side of the outer wall of the sintering chamber (1), characterized in that: The sintering chamber (1) is hollow and double-layered. A cooling box (10) is movably sleeved inside the sintering chamber (1) on the side away from the chamber door (2). A heat insulation plate (9) is fixed on the side of the cooling box (10) close to the sintering chamber (1). A first servo motor (5) is fixed at the bottom of one side of the outer wall of the sintering chamber (1). A threaded rod (6) is fixed at the power output end of the first servo motor (5). Threaded sleeves (7) are threaded through both sides of the middle of the threaded rod (6). A transmission rod (8) is hinged on one side of each of the two threaded sleeves (7). The two transmission rods (8) are hinged to the bottom of one side of the heat insulation plate (9). A partition plate (13) is fixed in the middle of the interior of the sintering chamber (1). A holding tray (18) is movably installed on the top of the partition plate (13). A rotating mechanism is provided at the bottom of the holding tray (18).
2. The denture sintering apparatus as described in claim 1, characterized in that: The threads at both ends of the threaded rod (6) are opposite in direction, and the threaded rod (6) moves through the outer wall of the sintering chamber (1) and is rotatably connected to the inner wall of the sintering chamber (1). The threaded rod (6) is located inside the hollow cavity of the sintering chamber (1).
3. The denture sintering apparatus as described in claim 1, characterized in that: The length of the transmission rod (8) is matched with the width of the inner wall of the sintering chamber (1), and the width of the heat insulation plate (9) is matched with the width of the inner cavity of the sintering chamber (1).
4. The denture sintering apparatus as described in claim 1, characterized in that: The rotating mechanism includes a second servo motor (14), which is fixed to the lower middle part of one side of the inner wall of the sintering chamber (1) by a support rod, and a drive gear (15) is fixed to the power output end of the second servo motor (14).
5. The denture sintering apparatus as described in claim 4, characterized in that: The bottom of the holding tray (18) is fixed with a connecting shaft (17), which is rotatably connected to the middle of the partition plate (13). A driven gear (16) is fixed at the bottom of the connecting shaft (17). The driven gear (16) and the driving gear (15) mesh with each other, and the diameter of the root circle of the driven gear (16) is greater than the diameter of the root circle of the driving gear (15).
6. The denture sintering apparatus as described in claim 1, characterized in that: The cooling box (10) is hollow inside, and a water outlet pipe (11) is fixed through the top of one side of the cooling box (10), and a water inlet pipe (12) is fixed through the bottom of one side of the cooling box (10).
7. The denture sintering apparatus as described in claim 1, characterized in that: The sintering chamber (2) and the holding tray (18) are located on the same horizontal plane. A second connecting block (4) is fixed at one end of the sintering chamber (2), and a first connecting block (3) is fixed in the middle of one side of the sintering chamber (1). The first connecting block (3) and the second connecting block (4) are used together.