False tooth crack detection device

Abstract

The utility model discloses a false tooth crack detection device, which particularly relates to the technical field of false tooth production and comprises a base, a support frame fixedly connected to the top end of the base, an ultrasonic flaw detector mounted at the top end of the base, a detection head mounted at one end of the ultrasonic flaw detector, an adjusting mechanism mounted on the inner side of the support frame, and a limiting component mounted at the top end of the base. The limiting assembly comprises a first variable frequency motor, the first variable frequency motor is installed in the base, the output end of the first variable frequency motor is fixedly connected with a fixing frame, and a second variable frequency motor is installed in the fixing frame. Therefore, the detection head can conveniently detect the false teeth from multiple angles, the influence of human factors on the detection result is reduced, meanwhile, the detection requirements of the false teeth of different shapes and sizes can be met, and the detection efficiency and flexibility can be improved.

Description

Technical Field

[0001] This utility model relates to the field of dental prosthesis manufacturing technology, and more specifically, to a dental prosthesis crack detection device. Background Technology

[0002] In current denture manufacturing processes, dentures are often sintered using zirconia. After sintering, the dentures undergo grinding, trimming, polishing, and glazing to obtain the finished product. During grinding and polishing, auxiliary tools such as grinding guns and scrapers are often required, which can easily cause internal cracks in the dentures. In addition, if the zirconia raw material is not sintered properly during the denture sintering process, delamination and cracks can easily form inside the denture. Therefore, after the dentures are ground and shaped, quality inspection and screening are often required to remove dentures with internal cracks caused by improper grinding operations, collisions between dentures, or poor zirconia sintering, in order to ensure the quality of the finished dentures.

[0003] In existing technologies, when operators inspect dentures for cracks, they mainly place the dentures under a spotlight one by one and observe whether there are cracks on the surface of the dentures under the light. This crack detection method has low detection efficiency, and operators cannot detect cracks hidden inside the dentures with the naked eye, resulting in low detection accuracy. There is room for improvement.

[0004] A search revealed that Chinese patent CN221038862U discloses a denture crack detection device. This device, through the coordinated use of a connector, an infrared through-beam sensor (thin-film pressure sensor), a microcontroller, and an ultrasonic flaw detector, can automatically detect the connection between the ultrasonic flaw detector and the connector. When the operator removes the detection probe to inspect for cracks in the denture, the microcontroller automatically controls the ultrasonic flaw detector to start. The operator can directly use the detection probe to detect cracks inside the denture and observe the detection waveform on the ultrasonic flaw detector's display. Based on the detected waveform, the operator can accurately and conveniently understand the cracks inside the denture.

[0005] In actual use, the denture crack detection device requires the operator to manually hold the denture for inspection, which may cause the denture to move or wobble during the inspection process. In addition, manually holding the denture for inspection not only increases the operator's labor intensity, but also requires repeated inspections due to human factors, thereby reducing the inspection efficiency. Utility Model Content

[0006] In order to overcome the above-mentioned defects of the prior art, the present invention provides a denture crack detection device to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A denture crack detection device includes a base, a support frame fixedly connected to the top of the base, an ultrasonic flaw detector mounted on the top of the base, a probe head mounted on one end of the ultrasonic flaw detector, an adjustment mechanism mounted inside the support frame, and a limit component mounted on the top of the base.

[0009] The limiting assembly includes a first variable frequency motor, which is installed inside the base. A fixed frame is fixedly connected to the output end of the first variable frequency motor. A second variable frequency motor is installed inside the fixed frame. A rotating rod is fixedly connected to the output end of the second variable frequency motor. The rotating rod is rotatably connected to the inside of the fixed frame. A first sprocket is fixedly connected to the outside of the rotating rod. A chain is engaged on the outside of the first sprocket. A second sprocket is engaged on the inside of the chain. The second sprocket is rotatably connected to the inside of the fixed frame. A first clamping plate is fixedly connected to one side of the second sprocket. The first clamping plate passes through the fixed frame and is rotatably connected to the inside of the fixed frame. Two first sliding grooves are formed on the upper surface of the fixed frame. A movable plate is slidably connected to the inside of the first sliding grooves. A second clamping plate is rotatably connected to one side of the movable plate. An electric push rod is installed inside the fixed frame. The output end of the electric push rod is fixedly connected to one side of the second clamping plate.

[0010] By adopting the above technical solution, the denture can be rotated in multiple directions during the probe, so that the probe head can better probe the denture.

[0011] As a further description of the above technical solution: the adjustment mechanism includes a first stepper motor, which is fixedly connected to one side of the support frame. A first lead screw is fixedly connected to the output end of the first stepper motor. The first lead screw is rotatably connected to the inner side of the support frame. A movable frame is threadedly connected to the outer side of the first lead screw. Two second sliding grooves are opened on the front side of the support frame. The movable frame is slidably connected to the inner side of the second sliding grooves. A second stepper motor is installed at the top of the movable frame. A second lead screw is fixedly connected to the output end of the second stepper motor. The second lead screw is rotatably connected to the inner side of the movable frame. A movable plate is threadedly connected to the outer side of the second lead screw. Two guide posts are slidably connected to one side of the movable plate. The guide posts are fixedly connected to the inner side of the movable frame. A connector is fixedly connected to the other side of the movable plate. The bottom end of the connector is fixedly connected to the probe.

[0012] By adopting the above technical solution, the position of the probe can be adjusted according to the different sizes of the dentures and the actual dimensions, thereby improving the flexibility of the test.

[0013] The technical effects and advantages of this utility model are as follows:

[0014] 1. By setting a limiting component, compared with the existing technology, the fixed frame can drive the electric denture to rotate clockwise, and the first clamping plate and the second clamping plate can drive the denture itself to rotate. This allows the denture to rotate along multiple trajectories during the inspection process, which makes it easier for the probe to inspect the denture from multiple angles, reduces the manual handling and flipping of the denture, and reduces the impact of human factors on the inspection results.

[0015] 2. By setting an adjustment mechanism, compared with the existing technology, the probe head can be adjusted up and down by the second lead screw, and the probe head can be adjusted left and right by the first lead screw. This allows for more precise adjustment of the probe head according to the size of the denture and the testing requirements during testing, thereby enhancing testing efficiency and flexibility. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0017] Figure 2 This is a cross-sectional view of the base structure of this utility model.

[0018] Figure 3 This is a schematic diagram of the top structure of the base of this utility model.

[0019] Figure 4 This is a cross-sectional view of the fixing frame of this utility model.

[0020] Figure 5 This is a schematic diagram of the first bevel gear and the second bevel gear of this utility model.

[0021] Figure 6 This is a schematic diagram of the movable frame structure of this utility model.

[0022] The attached figures are labeled as follows: 1. Base; 2. Support frame; 3. Ultrasonic flaw detector; 4. First variable frequency motor; 6. Fixed frame; 7. Second variable frequency motor; 8. Rotating rod; 10. First sprocket; 11. Chain; 12. Second sprocket; 13. First clamping plate; 14. First slide groove; 15. Moving plate; 16. Second clamping plate; 17. Electric push rod; 18. First stepper motor; 19. First lead screw; 20. Movable frame; 21. Second slide groove; 22. Second stepper motor; 23. Second lead screw; 24. Movable plate; 25. Guide column; 26. Connector; 27. Probe head. Detailed Implementation

[0023] 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.

[0024] The embodiments disclosed in this application are as follows: Figure 1-6 The device for detecting cracks in dentures shown includes a base 1, a support frame 2 fixedly connected to the top of the base 1, an ultrasonic flaw detector 3 installed at the top of the base 1, a probe head 27 installed at one end of the ultrasonic flaw detector 3, an adjustment mechanism installed inside the support frame 2, and a limit component installed at the top of the base 1.

[0025] The limiting assembly includes a first variable frequency motor 4, which is installed inside the base 1. A fixed frame 6 is fixedly connected to the output end of the first variable frequency motor 4. A second variable frequency motor 7 is installed inside the fixed frame 6. A rotating rod 8 is fixedly connected to the output end of the second variable frequency motor 7 and is rotatably connected to the inside of the fixed frame 6. A first sprocket 10 is fixedly connected to the outside of the rotating rod 8. A chain 11 meshes with the outside of the first sprocket 10, and a second sprocket 12 meshes with the inside of the chain 11. The second sprocket 12 is rotatably connected to the inside of the fixed frame 6. A first clamping plate 13 is fixedly connected to one side of the second sprocket 12, penetrating the fixed frame 6 and rotatably connected to the inside of the fixed frame 6. Two first sliding grooves 14 are formed on the upper surface of the fixed frame 6. A movable plate 15 is slidably connected to the inside of the first sliding grooves 14, and a second clamping plate 16 is rotatably connected to one side of the movable plate 15. An electric push rod 17 is installed inside the fixing frame 6. The output end of the electric push rod 17 is fixedly connected to one side of the second clamping plate 16. The fixing frame 6 is driven to rotate clockwise by the first variable frequency motor 4. At the same time, the fixing frame 6 can drive the denture to rotate. While the fixing frame 6 is rotating, the rotating rod 8 is driven by the second variable frequency motor 7 to drive the first sprocket 10 to rotate. The outer side of the first sprocket 10 is engaged with the chain 11, so that the first sprocket 10 is connected to the second sprocket 12 through the chain 11 to rotate. This allows the second sprocket 12 to drive the first clamping plate 13 to rotate. Thus, the first clamping plate 13 and the second clamping plate 16 in the clamping state can drive the denture itself to rotate. This makes it easier for the probe 27 to detect the denture from multiple angles, reducing the need for manual handling and flipping of the denture, and reducing the impact of human factors on the detection results.

[0026] Reference Figure 1 and 6As shown, the adjustment mechanism includes a first stepper motor 18, which is fixedly connected to one side of the support frame 2. A first lead screw 19 is fixedly connected to the output end of the first stepper motor 18, and the first lead screw 19 is rotatably connected to the inner side of the support frame 2. A movable frame 20 is threadedly connected to the outer side of the first lead screw 19. Two second slide grooves 21 are opened on the front side of the support frame 2, and the movable frame 20 is slidably connected to the inner side of the second slide grooves 21. A second stepper motor 22 is installed at the top of the movable frame 20, and a second lead screw 23 is fixedly connected to the output end of the second stepper motor 22. The second lead screw 23 is rotatably connected to the inner side of the movable frame 20, and a movable plate 24 is threadedly connected to the outer side of the second lead screw 23. Two guide posts 25 are slidably connected to one side of the movable plate 24, and the guide posts 25 are fixedly connected to the inner side of the movable frame 20. A connector 26 is fixedly connected to the other side of the plate 24. The bottom end of the connector 26 is fixedly connected to the probe head 27. The first stepper motor 18 drives the first lead screw 19 to rotate. The first lead screw 19 can drive the movable frame 20 to move through the thread. The two second slide grooves 21 can provide guidance for the movement of the movable frame 20, so that the movable frame 20 can drive the probe head 27 to move left and right. The second stepper motor 22 drives the second lead screw 23 to rotate, so that the second lead screw 23 can drive the movable plate 24 to move up and down through the thread. The two guide posts 25 can provide guidance for the movement of the movable plate 24, so that the movable plate 24 can drive the probe head 27 to move up and down. This allows for adjustment according to dentures of different shapes and sizes during detection, thereby enhancing detection efficiency and flexibility.

[0027] Working principle of this utility model: This utility model designs a denture crack detection device, the specific structure of which is shown in the attached instruction manual. Figure 1-6As shown, in this technical solution, through the cooperation of various structures, when crack detection of the denture is required, one end of the denture is first placed against one side of the first clamping plate 13. Then, the electric push rod 17 is activated, which pushes the moving plate 15 to move. The two first sliding grooves 14 provide guidance for the movement of the moving plate 15, allowing the moving plate 15 to drive the second clamping plate 16 to fit against the other end of the denture. Thus, the first clamping plate 13 and the second clamping plate 16 can clamp the denture. Subsequently, the second stepper motor 22 and the first stepper motor 18 are activated in sequence. The second stepper motor 22 drives the second lead screw 23 to rotate, allowing the second lead screw 23 to drive the movable plate 24 to move downward through the thread. The two guide posts 25 provide guidance for the movement of the movable plate 24, allowing the movable plate 24 to drive the probe head 27 to fit against the denture surface. At the same time, the first stepper motor 18 drives the first lead screw 19 to rotate, and the first lead screw 19 can drive the movable frame 20 to move back and forth left and right through the thread, so as to facilitate the detection of the denture surface. During the detection process, the first variable frequency motor 4 is activated, driving the fixing frame 6 to rotate clockwise, thus rotating the denture. Simultaneously, the second variable frequency motor 7 is activated, driving the rotating rod 8 to rotate, which in turn rotates the first sprocket 10. The outer side of the first sprocket 10 engages with the chain 11, allowing the first sprocket 10 to drive the second sprocket 12 via the chain 11. The second sprocket 12 then rotates the first clamping device. The first clamping plate 13 rotates, clamping the denture through the first clamping plate 13 and the second clamping plate 16. At the same time, the second clamping plate 16 is rotatably connected to one side of the moving plate 15, so that while the fixed frame 6 drives the denture to rotate clockwise, the first clamping plate 13 and the second clamping plate 16 can drive the denture to rotate on its own, allowing the denture to move along more varied trajectories, so that the probe 27 can better detect the surface of the denture. Then the probe 27 can display the detection data on the display screen on the front side of the ultrasonic flaw detector 3.

[0028] In the accompanying drawings of the embodiments disclosed in this utility model, only the structures involved in the embodiments of this utility model are shown. Other structures can be referred to with ordinary design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.

[0029] All contents not described in detail in the specification are existing technologies known to those skilled in the art, and the model parameters of each electrical appliance are not specifically limited; conventional equipment can be used. Electrical control components not mentioned in this technical solution are existing technologies and are therefore not shown in the figures and will not be described here.

[0030] In conclusion, the above are merely preferred embodiments of this utility model and are not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A denture crack detection device comprising a base (1), characterized in that: The top end of the base (1) is fixedly connected with a support frame (2), the top end of the base (1) is provided with an ultrasonic flaw detector (3), one end of the ultrasonic flaw detector (3) is provided with a probe head (27), the inner side of the support frame (2) is provided with an adjusting mechanism, and the top end of the base (1) is provided with a limiting component; The limiting component comprises a first variable frequency motor (4), the first variable frequency motor (4) is installed in the base (1), the output end of the first variable frequency motor (4) is fixedly connected with a fixed frame (6), the fixed frame (6) is internally provided with a second variable frequency motor (7), the output end of the second variable frequency motor (7) is fixedly connected with a rotating rod (8), the rotating rod (8) is rotatably connected with the inside of the fixed frame (6), and the outer side of the rotating rod (8) is fixedly connected with a first chain wheel (10).

2. The denture crack detection apparatus of claim 1, wherein: The outer side of the first chain wheel (10) is engaged with a chain (11), the inner side of the chain (11) is engaged with a second chain wheel (12), the second chain wheel (12) is rotatably connected with the inside of the fixed frame (6), one side of the second chain wheel (12) is fixedly connected with a first clamping disc (13), and the first clamping disc (13) penetrates through the fixed frame (6) and is rotatably connected with the inside of the fixed frame (6).

3. The denture crack detection apparatus of claim 1, wherein: Two first sliding grooves (14) are formed in the upper surface of the fixed frame (6), a moving plate (15) is slidably connected to the inner side of the first sliding groove (14), and a second clamping disc (16) is rotatably connected to one side of the moving plate (15).

4. The denture crack detection apparatus of claim 1, wherein: An electric push rod (17) is installed in the fixed frame (6), and the output end of the electric push rod (17) is fixedly connected to one side of the second clamping disc (16).

5. The denture crack detection apparatus of claim 1, wherein: The adjusting mechanism comprises a first stepper motor (18), the first stepper motor (18) is fixedly connected to one side of the support frame (2), the output end of the first stepper motor (18) is fixedly connected with a first screw rod (19), the first screw rod (19) is rotatably connected with the inner side of the support frame (2), and the outer side of the first screw rod (19) is threadedly connected with a movable frame (20).

6. The denture crack detection apparatus of claim 5, wherein: Two second sliding grooves (21) are formed in the front side of the support frame (2), the movable frame (20) is slidably connected to the inner side of the second sliding groove (21), a second stepper motor (22) is installed at the top end of the movable frame (20), the output end of the second stepper motor (22) is fixedly connected with a second screw rod (23), and the second screw rod (23) is rotatably connected with the inner side of the movable frame (20).

7. The denture crack detection apparatus of claim 6, wherein: The outer side of the second screw rod (23) is threadedly connected with a movable plate (24), one side of the movable plate (24) is slidably connected with two guide columns (25), the guide columns (25) are fixedly connected to the inner side of the movable frame (20), the other side of the movable plate (24) is fixedly connected with a connecting head (26), and the bottom end of the connecting head (26) is fixedly connected with the probe head (27).

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