False tooth carving knife
By designing a dental engraving cutter with a limiting ring, fixing rod, and spring structure, the problem of inconvenient cutter replacement in existing technologies has been solved, enabling quick replacement and protection, and improving work efficiency and engraving accuracy.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-08
- Publication Date
- 2026-04-03
AI Technical Summary
Existing dental prosthesis carving tools cannot be quickly replaced with different sized tools, resulting in low work efficiency, low carving precision, and frequent tool replacements.
A dental prosthesis carving knife was designed. Through a combination of a limiting ring, a fixing rod, a spring, and a limiting plate, the knife can be quickly replaced and protected, ensuring the stable installation of carving knives of different sizes.
It improves carving efficiency, maintains the sharpness of carving tools, extends their service life, and ensures carving accuracy and safety.
Smart Images
Figure CN224070619U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of dental prosthesis manufacturing technology, and in particular to a dental prosthesis carving tool. Background Technology
[0002] Dentures, also known as "false teeth," are restorations that replace missing teeth. They restore chewing function, aid in food digestion and absorption, improve pronunciation for clearer expression, enhance appearance and confidence, maintain oral health, and prevent tooth displacement and malocclusion. A carving tool is indispensable in denture fabrication because it can precisely carve the wax or resin material to shape the denture, ensuring its harmony with surrounding tissues. It can also adjust the occlusal surface to guarantee chewing function. Dentures can be customized according to the patient's oral condition and needs. Furthermore, it can repair, grind, and polish flawed or modified dentures to improve their quality and performance.
[0003] Dental prosthesis carving tools generally consist of a blade head, a handle, and connecting parts. Through manual operation, the tool uses a blade head with a hardness higher than the denture material and a sharp edge to cut and change the shape and size of denture materials such as wax and resin under external force. It also involves controlling the angle, force, and direction of movement to smooth the surface, adjust detailed structures, and use pushing, pulling, and pressing motions to plastically deform the material. The entire process requires the carver to precisely control the tool's movement with experience and skill to achieve accurate shaping of the denture, meeting both aesthetic and functional requirements.
[0004] Existing dental prosthesis carving tools cannot be quickly changed to different sizes, which has many disadvantages, such as reduced work efficiency, carvers spending a lot of time searching for and changing tools, affecting carving accuracy, being forced to use unsuitable carving tools, making it difficult to achieve the ideal shape and detail requirements, increasing the difficulty of the work, and requiring constant adjustment of techniques to adapt to a single size carving tool. Therefore, a new dental prosthesis carving tool is proposed to solve the above problems. Utility Model Content
[0005] To overcome the above shortcomings, this utility model provides a dental prosthesis carving knife, which aims to improve the problem that existing technologies cannot quickly change carving knives of different sizes.
[0006] To achieve the above objectives, the present invention adopts the following technical solution:
[0007] A denture carving knife includes a handle, with carving knives slidably connected to both sides of the inside of the handle, two limiting rings slidably connected inside the handle, a fixing rod slidably connected inside the limiting rings, a limiting plate rotatably connected to the outside of the fixing rod, a sliding post slidably connected to the outside of the limiting rings, and a connecting component fixedly connected to the outside of the handle.
[0008] Furthermore, when it is necessary to replace the carving knife, press down the fixing rod, which will cause the limiting plate to move downwards, compressing it against the inner wall of the limiting ring and disengaging it from the slot. This allows the sliding post and carving knife to be removed from the handle, thus replacing the carving knife. When installing a new carving knife, slide the sliding post into the handle, and then slide the limiting ring in. At this time, the limiting plate will be compressed as it enters the sliding post, sliding to the slot and being ejected by the spring to lock in place, thus securing the carving knife. The connecting component on the outside of the handle can be connected to the outer shell. When operating the outer shell, the outer shell can be easily installed or removed through the cooperation of the limiting block, limiting plate two, and spring three, to protect or expose the carving knife for denture carving operations.
[0009] As a further description of the above technical solution:
[0010] The connecting assembly includes a fixing plate, the bottom of which is fixedly connected to the outside of the handle, a connecting plate fixedly connected inside the fixing plate, a fixing block fixedly connected to the top of the connecting plate, a limiting plate rotatably connected to the outside of the fixing block, and a limiting block slidably connected to the outside of the connecting plate.
[0011] Furthermore, by pressing the second limiting plate to compress the spring and disengage it from the limiting block, the relevant components connected to the limiting block can be removed. The limiting block is then aligned with the connecting plate and slid. The inner wall of the limiting block presses against the second limiting plate. When the plate slides to a specific position, the second limiting plate pops out under the action of the spring, completing the connection and enabling convenient loading and unloading of the relevant components.
[0012] As a further description of the above technical solution:
[0013] A spring three is fixedly connected inside the limiting plate two, and the other end of the spring three is fixedly connected to the top of the connecting plate;
[0014] Furthermore, by pressing the second limiting plate to compress the spring and disengage it from the limiting block, the relevant components connected to the limiting block can be removed. During installation, the limiting block is aligned with the connecting plate and slid. The inner wall of the limiting block presses against the second limiting plate. When the plate is slid to a specific position, the second limiting plate pops out under the action of the spring, completing the connection and enabling convenient installation and removal of the relevant components.
[0015] As a further description of the above technical solution:
[0016] The limiting block has a groove inside, and the outer side of the second limiting plate is slidably connected to the inside of the groove;
[0017] Furthermore, when the limiting block is pushed to compress the limiting plate two, the spring three is compressed and stores elastic potential energy. When the limiting block slides past a specific position and loses the squeezing force, the spring three releases the elastic potential energy, pushing the limiting plate two to reset so that it can be locked into the corresponding position of the limiting block, thereby fixing or unlocking the outer shell and other components and ensuring the normal operation of the connecting components.
[0018] As a further description of the above technical solution:
[0019] The sliding column has multiple slots inside, and the outer side of the limiting plate is slidably connected to the inside of the slots;
[0020] Furthermore, when the limiting block slides, the second limiting plate moves within the groove and is compressed. When the second limiting plate retracts into the groove, it pops out again with the help of a spring after the pressure is released, thus completing the fixing and disassembly of the component.
[0021] As a further description of the above technical solution:
[0022] A second spring is fixedly connected inside the sliding column, and the other end of the second spring is slidably connected to the bottom of the fixed rod;
[0023] Furthermore, the second spring of the pressure fixing rod is compressed, the pressure spring is released and springs back to push the fixing rod to reset, so that the first limiting plate is accurately inserted into the slot, completing the installation and fixing of the carving knife.
[0024] As a further description of the above technical solution:
[0025] A spring is fixedly connected to the outside of the fixing rod, and the other end of the spring is fixedly connected to the inside of the limiting plate.
[0026] Furthermore, pressing down the fixing rod causes the limiting plate to retract under pressure, compressing the spring and releasing the fixing rod. The spring then rebounds, pushing the limiting plate out and quickly locking it into the slot, thus achieving a secure installation of the carving knife.
[0027] As a further description of the above technical solution:
[0028] The outer side of the limiting plate is slidably connected to the inside of the limiting ring, and the outer side of the carving knife is slidably connected to a shell;
[0029] Furthermore, when replacing the carving knife, pressing down the fixing rod causes the limiting plate to retract into the limiting ring to remove the carving knife. When reinstalling, the limiting plate pops out to fix the carving knife, and the outer shell can slide to protect the carving knife.
[0030] This utility model has the following beneficial effects:
[0031] 1. In this utility model, a limiting ring is used in conjunction with a fixing rod, the fixing rod is used in conjunction with a spring, the spring is used in conjunction with a limiting plate, the limiting plate is used in conjunction with a slot, and the slot is used in conjunction with a sliding column, thereby achieving the effect of replacing carving knives of different sizes. In the process of denture fabrication, various sizes of carving knives are required depending on different denture models and carving needs. This design of replaceable carving knives eliminates the need for workers to frequently change the entire carving tool. They can simply change the carving knife to quickly adapt to different work requirements, saving time on tool changes and thus improving overall work efficiency.
[0032] 2. In this utility model, a fixed plate is used in conjunction with a connecting plate, a connecting plate with a fixed block, a fixed block with a limiting plate, and a limiting plate with a spring and a limiting block. This achieves protection for the carving knife when it is not in use. The blade of the dental prosthesis carving knife is quite sharp. If it is left lying around when not in use, it is easy to collide with other objects, causing the blade to become damaged, dull, or chipped. By using the above-mentioned components to store the carving knife in the outer shell for protection, the blade can be prevented from contacting external objects, effectively maintaining the sharpness and integrity of the blade, extending the service life of the carving knife, and ensuring a good carving effect every time it is used. Attached Figure Description
[0033] Figure 1 This is a three-dimensional schematic diagram of a dental prosthesis carving knife proposed in this utility model;
[0034] Figure 2 This is a schematic diagram of the structure of the limiting ring of a dental prosthesis carving tool proposed in this utility model;
[0035] Figure 3 for Figure 2 Enlarged view of point A in the middle;
[0036] Figure 4 for Figure 2 Enlarged view of point B in the middle;
[0037] Figure 5 for Figure 2 A magnified view of point C in the middle.
[0038] Legend:
[0039] 1. Handle; 2. Carving knife; 3. Restricting ring; 4. Fixing rod; 5. Restricting plate one; 6. Spring one; 7. Sliding column; 8. Spring two; 9. Slot; 10. Connecting plate; 11. Spring three; 12. Restricting block; 13. Restricting plate two; 14. Slide groove; 15. Fixing block; 16. Outer shell; 17. Fixing plate. Detailed Implementation
[0040] 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.
[0041] Reference Figures 2 to 4This utility model provides an embodiment of a dental prosthesis carving knife, including a handle 1. The handle 1 adopts an ergonomic design for a comfortable grip. Carving knives 2 are slidably connected to both sides of the handle 1. This design makes it easy to install and remove the carving knives 2 and allows for quick switching between different carving knives 2 during dental prosthesis carving. Two limiting rings 3 are slidably connected inside the handle 1. The limiting rings 3 serve to position and fix the carving knives 2, ensuring that the carving knives 2 do not shake during operation. A fixing rod 4 is slidably connected inside the limiting rings 3. The fixing rod 4 can move flexibly up and down within the limiting rings 3 to control the related structures connected to the carving knives 2. A limiting plate 5 is rotatably connected to the outside of the fixing rod 4. The limiting plate 5 can rotate around the connection point with the fixing rod 4 as an axis, thereby enabling it to engage or disengage with slots 9 at different positions. The outside of the limiting plate 5 is slidably connected inside the limiting rings 3 and slides inside the limiting rings 3, allowing the limiting plate 5 to operate stably during the fixing and releasing of the carving knives 2.
[0042] A spring 6 is fixedly connected to the outside of the fixing rod 4. The spring 6 provides an outward elastic force to the limiting plate 5, ensuring that the limiting plate 5 is pushed into the slot 9 at the appropriate time to achieve a stable fixation of the carving knife 2. The other end of the spring 6 is fixedly connected to the inside of the limiting plate 5. This connection method ensures that the elastic force of the spring 6 can be accurately applied to the limiting plate 5. A sliding post 7 is slidably connected to the outside of the limiting ring 3. The sliding post 7 can slide relative to the limiting ring 3, and the sliding is used to cooperate with the installation and removal of the carving knife 2.
[0043] A second spring 8 is fixedly connected inside the sliding column 7. The second spring 8 provides upward support force to the fixed rod 4, maintaining the stability of the fixed rod 4 and related structures when no external force is applied to the fixed rod 4. The other end of the second spring 8 is slidably connected to the bottom of the fixed rod 4, ensuring that the second spring 8 can effectively apply force to the fixed rod 4. Multiple slots 9 are opened inside the sliding column 7. These slots 9 cooperate with the first limiting plate 5. The slots 9 at different positions can adapt to the fixing requirements of different sized carving knives 2. The first limiting plate 5 is inserted into different slots 9 to achieve stable fixing of different carving knives 2. The outer side of the first limiting plate 5 is slidably connected to the inside of the slots 9, so that the first limiting plate 5 can smoothly insert into or detach from the slots 9 as needed. A connecting component is fixedly connected to the outer side of the handle 1.
[0044] Reference Figure 1 , Figure 2 and Figure 5The connecting assembly includes a fixing plate 17, which is firmly fixed to the outside of the handle 1, providing a stable mounting base for the entire connecting assembly. The bottom of the fixing plate 17 is fixedly connected to the outside of the handle 1, ensuring the stability of the connection between the fixing plate 17 and the handle 1. A connecting plate 10 is fixedly connected inside the fixing plate 17. The connecting plate 10 can move to a certain extent within the fixing plate 17 and connects the fixing block 15 and other structures to the handle 1, thus transmitting the operating force. A fixing block 15 is fixedly connected to the top of the connecting plate 10. The fixing block 15 is used to install the limiting plate 13 and plays a key positioning role in the operation of the entire connecting assembly.
[0045] A limiting plate 13 is rotatably connected to the outside of the fixing block 15. The limiting plate 13 can rotate flexibly around the connection point with the fixing block 15 to control the fixed and separated states between the outer shell 16 and the carving knife 2. A spring 11 is fixedly connected inside the limiting plate 13. The spring 11 provides an upward springing force for the limiting plate 13. When the conditions are met, the limiting plate 13 is lifted up so that it cooperates with the limiting block 12 to fix the outer shell 16.
[0046] The other end of spring 3 11 is fixedly connected to the top of connecting plate 10, ensuring that spring 3 11 can stably apply force to limiting plate 2 13. A limiting block 12 is slidably connected to the outside of connecting plate 10. The limiting block 12 guides and restricts the sliding of connecting plate 10. At the same time, through cooperation with limiting plate 2 13, it realizes the fixing or release of the outer shell 16. A sliding groove 14 is opened inside the limiting block 12. The sliding groove 14 provides a track for the sliding of limiting plate 2 13, allowing it to move within a specific path, ensuring the accuracy and stability of the connecting component. The outside of limiting plate 2 13 is slidably connected to the inside of the sliding groove 14, ensuring that limiting plate 2 13 can slide smoothly within the sliding groove 14 to complete the corresponding fixing and unlocking actions.
[0047] Working principle: When the worker needs to work on the denture, the second limiting plate 13 can be compressed downwards into the limiting block 12, causing the third spring 11 to be compressed downwards. This allows the second limiting plate 13 to slide down against one end of the inner side of the limiting block 12, at which point the second limiting plate 13 can be removed from the inside of the limiting block 12, thereby removing the outer shell 16 from the outside of the carving knife 2. The carving knife 2 can then be used to work on the denture. When the carving knife 2 is no longer needed, the connecting plate 10 can be slid back into the limiting block 12, and the second limiting plate 13 can be compressed downwards through the inner wall of the limiting block 12. The limiting block 12 has a sliding groove 14 inside. When the second limiting plate 13 slides to the outside of the sliding groove 14, it will be pushed upwards by the compressed third spring 11, thereby restricting the outer shell 16 to the outside of the carving knife 2.
[0048] When it is necessary to replace the carving knife 2, the fixing rod 4 can be pressed down. This will cause the fixing rod 4 to pull the multiple outer limiting plates 5 downwards together, compressing the limiting plates 5 against the inner wall of the limiting ring 3 and disengaging them from the slot 9. Once the limiting plates 5 are no longer restrained by the slot 9, the sliding post 7 can be removed from the handle 1. After the sliding post 7 is removed from the handle 1, the limiting ring 3 can also be removed from the handle 1. At this point, the carving knife 2 can be removed from the handle 1 for replacement. When it is necessary to restrain carving knives 2 of different sizes within the handle 1... When the blade 2 is inside, the sliding post 7 can be slid back into the handle 1. A hole is also opened inside one end of the blade 2. After the sliding post 7 is slid into the handle 1, the limiting ring 3 is slid back into the handle 1. When the limiting plate 5 connected to the outside of the fixing rod 4 enters the sliding post 7, it will be compressed into the limiting ring 3 by the inner wall of the sliding post 7. When the limiting plate 5 is slid to the outside of the slot 9, it will be pushed out of the limiting ring 3 by the compressed spring 6, so that the limiting plate 5 is pushed into the slot 9, thereby realizing the replacement of different sizes of blades 2.
[0049] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A denture carving knife comprising a handle (1), characterized in that: Both sides of the handle (1) are slidingly connected with the chisel (2), the handle (1) is slidingly connected with two limiting rings (3), the limiting ring (3) is slidingly connected with the fixed rod (4), the outer side of the fixed rod (4) is rotatably connected with the limiting plate one (5), the outer side of the limiting ring (3) is slidingly connected with the sliding column (7), the outer side of the handle (1) is fixedly connected with the connecting assembly.
2. A denture carving knife according to claim 1 wherein: The connecting assembly includes the fixed plate (17), the bottom of the fixed plate (17) is fixedly connected with the outer side of the handle (1), the inside of the fixed plate (17) is fixedly connected with the connecting plate (10), the top of the connecting plate (10) is fixedly connected with the fixed block (15), the outer side of the fixed block (15) is rotatably connected with the limiting plate two (13), the outer side of the connecting plate (10) is slidingly connected with the limiting block (12).
3. A denture carving knife according to claim 2, wherein: The inside of the limiting plate two (13) is fixedly connected with the spring three (11), the other end of the spring three (11) is fixedly connected with the top of the connecting plate (10).
4. The denture carving knife of claim 2, wherein: The inside of the limiting block (12) is provided with the sliding slot (14), the outer side of the limiting plate two (13) is slidingly connected with the inside of the sliding slot (14).
5. The denture carving knife of claim 1, wherein: The inside of the sliding column (7) is provided with a plurality of clamping grooves (9), the outer side of the limiting plate one (5) is slidingly connected with the inside of the clamping groove (9).
6. The denture carving knife of claim 1, wherein: The inside of the sliding column (7) is fixedly connected with the spring two (8), the other end of the spring two (8) is slidingly connected with the bottom of the fixed rod (4).
7. The denture carving knife of claim 1, wherein: The outer side of the fixed rod (4) is fixedly connected with the spring one (6), the other end of the spring one (6) is fixedly connected with the inside of the limiting plate one (5).
8. The denture carving knife of claim 1, wherein: The outer side of the limiting plate one (5) is slidingly connected with the inside of the limiting ring (3), the outer side of the chisel (2) is slidingly connected with the shell (16).