A supporting frame for sintering zirconia porcelain blocks for dental restoration

Abstract

The utility model discloses a kind of zirconia porcelain block sintering's bearing frame for oral cavity restoration, including disc, the bottom of the disc is fixedly connected with three support legs, the bottom of the support leg is fixedly connected with bottom plate, the top of the disc is equipped with three blind holes, a kind of zirconia porcelain block sintering's bearing frame for oral cavity restoration of the utility model, when needing to stack multiple bearing frames, overturn the movable plate on the first bearing frame, movable plate is overturned upwards with pin shaft as center, movable plate is connected in the adjacent support leg outside by second recess groove, then rotate the threaded tube on the second bearing frame, threaded tube moves downwards under the action of screw thread, threaded tube moves downwards to with movable plate top adhesion, movable plate fixes and press at this time bottom plate, to fix two bearing frames stacked in this way, higher stability, avoid the situation that bearing frame after stacking appears side turn, to guarantee the normal progress of sintering work.

Description

Technical Field

[0001] This utility model relates to the field of oral restoration technology, specifically a firing support for sintering zirconia ceramic blocks for oral restoration. Background Technology

[0002] Zirconia ceramic blocks are primarily used for fixed denture restorations. They are typically disc-shaped, with a common market size of ￠98×14 mm. The standard production process for zirconia ceramic blocks involves: adding zirconia powder into a mold and using hydraulic pressing to shape the powder into the desired form; this process can be referred to as pre-pressing. The product is then finalized using isostatic pressing to achieve the desired shape. Finally, it undergoes high-temperature sintering, machining, screen printing, and packaging to obtain a marketable product. High-temperature sintering involves placing the pressed zirconia preform in a high-temperature furnace for a period of time. Because zirconia products are disc-shaped, they are not suitable for sintering upright. Currently, a stacking and flat-laying method is commonly used for sintering the zirconia ceramic block preforms.

[0003] Chinese patent CN204814242U describes a firing support for sintering zirconia ceramic blocks for dental restorations. The support includes a disc and three legs connected to the lower surface of the disc, forming a bench shape. The area between the three legs is sufficient to accommodate a zirconia ceramic block lying flat. The height of the legs is greater than the thickness of the zirconia ceramic block. The beneficial effect of this invention is that by utilizing the overlapping function of the firing supports, the ceramic blocks remain independent during sintering, avoiding the cracking that can easily occur when ceramic blocks are directly overlapped, thus effectively improving production efficiency.

[0004] However, in actual use, the two sintering supports are only positioned by the limiting recess and the support legs and then stacked. This stacking method has extremely poor stability. The stacked sintering supports are prone to tipping over, which affects the sintering process and is not suitable for widespread use. Utility Model Content

[0005] In view of the above-mentioned shortcomings in the existing technology, the purpose of this utility model is to provide a sintering support for zirconia ceramic blocks used in dental restoration.

[0006] The technical solution adopted by this utility model to achieve the above-mentioned objective is as follows: a sintering support for zirconia ceramic blocks used in dental restoration, comprising a disc, three supporting legs fixedly connected to the bottom of the disc, a base plate fixedly connected to the bottom end of each supporting leg, three blind holes opened at the top of the disc, a threaded tube, a movable ring, and a fixed ring sleeved on the outer edge of each supporting leg, the threaded tube being threadedly connected to the supporting leg, three movable plates provided on the outer edge of the disc, the movable plates having an L-shaped cross-section, a first groove opened on the side of the movable plate near the movable ring, a connecting rod being movably inserted into the inner cavity of the first groove, a pin being rotatably connected to the connecting rod, and a second groove opened on the side of the movable plate away from the movable ring.

[0007] In the above technical solution, the blind holes are matched with the base plate, and the three blind holes are arranged in a ring array.

[0008] In the above technical solution, the fixing ring is fixedly connected to the outer edge of the support leg, and the top of the fixing ring and the bottom of the movable ring are in contact with each other.

[0009] In the above technical solution, the movable ring is movably connected to the outer edge of the support leg, and the movable ring is close to the top of the support leg.

[0010] In the above technical solution, the threaded tube is located near the bottom of the support leg, and the outer edge of the support leg is provided with an external thread. The external thread matches the threaded tube, and several anti-slip strips are fixedly connected to the outer edge of the threaded tube.

[0011] In the above technical solution, the connecting rod is fixedly connected to the adjacent movable ring, and the pin is fixedly inserted through the inner wall of the first groove.

[0012] In the above technical solution, the second groove matches the support leg, the inner width of the second groove is smaller than the outer diameter of the base plate, and the inner width of the second groove is larger than the outer diameter of the support leg.

[0013] The beneficial effects of this utility model are:

[0014] 1. Improved stability: This utility model discloses a sintering support for zirconia ceramic blocks used in dental restoration. When multiple sintering supports need to be stacked, the movable plate on the first sintering support is flipped. The movable plate flips upward around the pin shaft and is engaged with the outer side of the adjacent support leg through the second groove. Then, the threaded tube on the second sintering support is rotated. The threaded tube moves downward under the action of the thread until it is in contact with the top of the movable plate. At this time, the movable plate presses and fixes the base plate, thereby fixing the two stacked sintering supports. This results in higher stability and prevents the stacked sintering supports from tipping over, thus ensuring the normal progress of the sintering process.

[0015] 2. Ease of operation: The sintering support for zirconia ceramic blocks for dental restoration of this utility model greatly increases the friction on the surface of the threaded tube by setting anti-slip strips, which facilitates the rotation of the threaded tube and thus facilitates the assembly and disassembly work. Attached Figure Description

[0016] Figure 1 This is a frontal perspective view of the present invention;

[0017] Figure 2 This is a perspective view of the disc component of this utility model;

[0018] Figure 3 This is a front perspective view of the support leg of the component of this utility model;

[0019] Figure 4 This is a bottom perspective view of the support leg of the component of this utility model;

[0020] Figure 5 This is a frontal perspective view of the movable plate of the component of this utility model.

[0021] In the diagram: 1. Disc; 2. Support leg; 3. Base plate; 4. Blind hole; 5. Threaded pipe; 6. Anti-slip strip; 7. Movable ring; 8. Fixed ring; 9. Connecting rod; 10. Movable plate; 11. First groove; 12. Pin; 13. Second groove. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figure 1-5 A sintering support for zirconia ceramic blocks used in dental restoration includes a disc 1. Three support legs 2 are fixedly connected to the bottom of the disc 1. A base plate 3 is fixedly connected to the bottom end of the support legs 2. Three blind holes 4 are opened on the top of the disc 1. A threaded tube 5, a movable ring 7, and a fixed ring 8 are sleeved on the outer edge of the support legs 2. The threaded tube 5 is threadedly connected to the support legs 2. Three movable plates 10 are provided on the outer edge of the disc 1. The movable plates 10 have an L-shaped cross-section. A first groove 11 is opened on the side of the movable plate 10 near the movable ring 7. A connecting rod 9 is movably inserted into the inner cavity of the first groove 11. A pin 12 is rotatably connected to the connecting rod 9. A second groove 13 is opened on the side of the movable plate 10 away from the movable ring 7.

[0024] In the above technical solution, the blind hole 4 matches the base plate 3, and the three blind holes 4 are arranged in a ring array.

[0025] In the above technical solution, the fixing ring 8 is fixedly connected to the outer edge of the support leg 2, and the top of the fixing ring 8 is in contact with the bottom of the movable ring 7.

[0026] In the above technical solution, the movable ring 7 is movably connected to the outer edge of the support leg 2, and the movable ring 7 is close to the top of the support leg 2.

[0027] In the above technical solution, the threaded tube 5 is close to the bottom end of the support leg 2, and the outer edge of the support leg 2 is provided with an external thread. The external thread matches the threaded tube 5. Several anti-slip strips 6 are fixedly connected to the outer edge of the threaded tube 5. By setting the anti-slip strips 6, the friction of the surface of the threaded tube 5 is greatly increased, making it easier to rotate the threaded tube 5, thereby facilitating the assembly and disassembly work.

[0028] In the above technical solution, the connecting rod 9 is fixedly connected to the adjacent movable ring 7, and the pin 12 is fixedly inserted through the inner wall of the first groove 11. Through the setting of the pin 12, the movable plate 10 can rotate around the pin 12 as the center.

[0029] In the above technical solution, the second groove 13 matches the support leg 2. The inner width of the second groove 13 is smaller than the outer diameter of the base plate 3, and the inner width of the second groove 13 is larger than the outer diameter of the support leg 2. The base plate 3 can be pressed and fixed by the movable plate 10.

[0030] Working Principle: This utility model discloses a sintering support for zirconia ceramic blocks used in dental restorations. During use, when multiple supports need to be stacked, the first support is placed on a horizontal surface. Then, the second support is moved. As the second support moves, the disc 1 drives the support leg 2, which in turn drives the base plate 3. The base plate 3 of the second support is inserted into the blind hole 4 of the first support. Then, the movable plate 10 on the first support is flipped upwards around the pin 12. The movable plate 10 is engaged with the outer side of the adjacent support leg 2 via the second groove 13. Then, the threaded tube 5 on the second support is rotated. The threaded tube 5 moves downwards under the action of the threads until it is in contact with the top of the movable plate 10. At this point, the movable plate 10 presses and fixes the base plate 3, thus fixing the two stacked supports. This provides higher stability and prevents the stacked supports from tipping over, ensuring the normal progress of the sintering process.

[0031] The anti-slip strip 6 greatly increases the friction on the surface of the threaded tube 5, making it easier to rotate the threaded tube 5 and thus facilitating assembly and disassembly.

[0032] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0033] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A firing stand for sintering zirconia ceramic blocks for dental restoration, comprising a disc (1), characterized in that: The bottom of the disc (1) is fixedly connected to three support legs (2), and the bottom end of the support legs (2) is fixedly connected to a base plate (3). The top of the disc (1) is provided with three blind holes (4). The outer edge of the support legs (2) is fitted with a threaded tube (5), a movable ring (7) and a fixed ring (8). The threaded tube (5) is threadedly connected to the support legs (2). The outer edge of the disc (1) is provided with three movable plates (10). The cross-section of the movable plate (10) is L-shaped. The movable plate (10) is provided with a first groove (11) on the side of the movable plate (10) close to the movable ring (7). A connecting rod (9) is movably inserted into the inner cavity of the first groove (11). A pin (12) is rotatably connected to the connecting rod (9). The movable plate (10) is provided with a second groove (13) on the side away from the movable ring (7).

2. The firing stand for sintering zirconia ceramic blocks for dental restoration according to claim 1, characterized in that: The blind holes (4) are matched with the base plate (3), and the three blind holes (4) are arranged in a ring array.

3. The firing stand for sintering zirconia ceramic blocks for dental restoration according to claim 1, characterized in that: The fixing ring (8) is fixedly connected to the outer edge of the support leg (2), and the top of the fixing ring (8) is in contact with the bottom of the movable ring (7).

4. The firing stand for sintering zirconia ceramic blocks for dental restoration according to claim 1, characterized in that: The movable ring (7) is movably connected to the outer edge of the support leg (2), and the movable ring (7) is close to the top of the support leg (2).

5. The firing stand for sintering zirconia ceramic blocks for dental restoration according to claim 1, characterized in that: The threaded tube (5) is located near the bottom of the support leg (2). The outer edge of the support leg (2) is provided with an external thread, which matches the threaded tube (5). Several anti-slip strips (6) are fixedly connected to the outer edge of the threaded tube (5).

6. The firing stand for sintering zirconia ceramic blocks for dental restorations according to claim 1, characterized in that: The connecting rod (9) is fixedly connected to the adjacent movable ring (7), and the pin (12) is fixedly inserted through the inner wall of the first groove (11).

7. The firing stand for sintering zirconia ceramic blocks for dental restorations according to claim 1, characterized in that: The second groove (13) matches the support leg (2). The inner width of the second groove (13) is smaller than the outer diameter of the base plate (3), and the inner width of the second groove (13) is larger than the outer diameter of the support leg (2).

Images