A cobalt-chromium partial denture strength testing device

Abstract

The present invention discloses a cobalt-chromium partial denture strength testing device, which relates to the field of denture strength testing devices, including a box body, a box cover connected to the top of the box body, a plurality of friction blocks for rubbing against dentures arranged in a ring shape in the box cover facing the box body, a fixed assembly for installing dentures is rotatably connected in the box body, and a pressure-applying assembly for applying pressure to the dentures in the direction of the friction blocks is arranged in the fixed assembly, and a camera assembly is installed in the box cover and the box body toward the motion trajectory of the dentures, and the viewing angles of the camera assembly are mutually orthogonal. The present invention performs friction detection between friction blocks of various hardnesses under different pressures on each denture, and uses two groups of cameras with mutually orthogonal viewing angles in the box body to shoot the dentures in the rotation process, thereby conveniently realizing adaptive wear detection of different dentures at the same time.

Description

Technical Field

[0001] The invention relates to the field of denture strength testing equipment, in particular to a cobalt-chromium partial denture strength testing equipment. Background Art

[0002] Cobalt-chromium partial dentures are artificial teeth that are used to replace missing teeth and can help users restore tooth function. When cobalt-chromium partial dentures are produced, they need to be sampled and tested to determine whether the batch of dentures can meet the user's long-term use needs.

[0003] A Chinese patent with related announcement number CN117347217B discloses a denture durability detection method and a denture detection device, in which a high-pressure fluid containing friction particles is sprayed on the occlusal surface of the denture to simulate the impact force on the occlusal surface during chewing; then, after the high-pressure fluid contacts the occlusal surface, the pressure and flow rate are reduced, that is, the subsequent low-pressure fluid can flow along the gap to the bottom wall of the groove and be discharged from the drainage part to simulate the friction force of food residues on the non-occlusal surface of the denture; then, the wear ratio of the denture sample is calculated, which is equivalent to measuring the durability of the denture sample, to evaluate whether the denture sample is qualified.

[0004] With respect to the above-mentioned related technologies, the friction particles in the fluid sprayed by the existing device for testing the durability of dentures are difficult to replace conveniently, and cannot simulate the wear of dentures caused by foods of various hardness in life. In addition, the friction and pressure between the partial dentures installed in various positions and the food are not consistent during use. For example, the front teeth are mainly used for cutting food, while the molars are mainly used for chewing food. The existing testing equipment also finds it difficult to perform wear tests on partial dentures at multiple positions under different pressures at the same time. In summary, the existing denture strength testing equipment finds it difficult to perform adaptive wear tests on different dentures. Summary of the invention

[0005] Based on this, the purpose of the present invention is to provide a cobalt-chromium partial denture strength testing device to solve the technical problem that the existing denture strength testing equipment is difficult to perform adaptive wear tests on different dentures.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a cobalt-chromium partial denture strength testing device, comprising a box body, a box cover is connected to the top of the box body, a plurality of friction blocks for rubbing against the denture are installed in a ring-shaped arrangement in the box cover facing the box body, a fixing component for installing the denture is rotatably connected in the box body, and a pressure component for applying pressure to the denture in the direction of the friction block is arranged in the fixing component, and a camera component is installed in the box cover and the box body towards the movement trajectory of the denture, and the viewing angles of the camera components are orthogonal to each other.

[0007] By adopting the above technical solution, the friction between friction blocks of various hardnesses under different pressures is tested for each denture respectively, and the denture in the rotation process is photographed by two sets of cameras with mutually orthogonal viewing angles in the box, thereby conveniently realizing adaptive wear detection of different dentures at the same time.

[0008] The present invention is further configured as follows: a rotating table is rotatably connected in the box body, and a driving component for driving the rotating table is installed, the rotating table is circumferentially connected with a plurality of horizontal fixed plates at intervals, the fixed plate is connected to one end of the plug plate at one end away from the rotating table, and the other end of the plug plate is connected to a vertical fixed column, the top of the fixed column is slidably connected to the mounting column in the vertical direction, the top of the mounting column is connected to the mounting table for mounting the denture, the inside of the fixed column is slidably connected with the mounting column, the first piston and the second piston in sequence from top to bottom, an elastic component is arranged between the mounting column and the first piston, a pressure sensor is installed between the first piston and the second piston, a telescopic column is fixedly connected below the second piston, the telescopic column includes a fixed part and a telescopic part, the fixed part of the telescopic column is fixedly connected to the second piston, and the telescopic part is connected to a ball head after extending downward from the fixed column, and the ball head is always in contact with the top surface of the first ring rail installed in the box body.

[0009] By adopting the above technical solution, the artificial tooth is connected by using the connecting assembly on the fixed column, so that it can revolve around the center of the rotating table when the rotating table is working, contact with the friction block and generate friction.

[0010] The present invention is further configured such that a second ring rail is fixedly connected in the box body, the top end of the fixed column is connected to a positioning ring through a plurality of connecting blocks, the mounting column is simultaneously slidably connected in the positioning ring and the fixed column, the mounting column is fixedly connected to a friction wheel between the positioning ring and the fixed column, the diameter of the friction wheel is larger than the fixed column, and the friction wheel is always in contact with the side wall of the second ring rail.

[0011] By adopting the above technical solution, the contact between the friction wheel and the second ring rail is utilized to make the artificial tooth rotate around the center of the mounting column while the fixed column revolves around the center of the rotating table.

[0012] The present invention is further configured such that an inspection box and a plurality of mounting boxes which together form an annular structure are arranged in the box cover, a friction block is inserted in the mounting box, a first camera facing the denture is installed in the inspection box, all the friction blocks and the bottom surface of the inspection box are in the same plane, the inspection box is provided with an inspection window at a position corresponding to the first camera, the inner wall of the box body is connected to a second camera facing the denture at the height of the denture, the viewing angle of the first camera is vertically toward the top surface of the denture, and the viewing angle of the second camera is horizontally toward the side surface of the denture.

[0013] By adopting the above technical solution, it is possible to determine whether the denture has completed the strength test.

[0014] The present invention is further configured such that cleaning brush wheels are rotatably connected to both sides of the first camera in the inspection box, and the bottom surface of the cleaning brush wheel extends downward beyond the bottom surface of the inspection box.

[0015] By adopting the above technical solution, the cleaning brush wheel can clean the top of the denture and brush off the powder generated by friction, thereby effectively improving the accuracy of camera detection.

[0016] The present invention is further configured as follows: an annular collecting groove lower than the first ring rail is provided in the box body, the bottom end of the fixed column can be connected to a scraper for scraping powder on the first ring rail into the collecting groove, the fixed plate can be connected to a scraper for pushing the powder in the collecting groove to the inner and outer edges of the collecting groove, a collecting bin is provided in the box body at a position lower than the collecting bin, a dust outlet connected to the outer edge of the collecting bin is provided at the top of the collecting bin, and a collection box for collecting powder is slidably connected in the collecting bin.

[0017] By adopting the above technical solution, the powder falling into the collecting trough is gradually moved away from the rotating table under the push of the scraper, and when passing through the dust outlet, the powder falls from the dust outlet into the collecting box in the collecting bin.

[0018] The present invention is further configured such that the plug plate is plugged into the fixed plate in a vertical direction, a vertical plug block is connected to the end of the plug plate, a slot for cooperating with the plug block is provided in the fixed plate, the plug block is used to limit the plug plate from sliding relative to the fixed plate in a horizontal direction, a sliding groove is provided in the length direction of the fixed plate, and a slider is slidably connected in the sliding groove, and when the slider slides to the top of the plug plate, it can limit the plug plate from sliding relative to the fixed plate in a vertical direction.

[0019] By adopting the above technical solution, stable positioning of the plug board is achieved.

[0020] The present invention is further configured such that the tail end of the slider is connected to a limiting column, the limiting column can be retracted into the slider, and a spring is connected between the end and the inner wall of the slider. When the limiting column extends from the slider, it is located in a slot, and the inner wall of the slot is provided with an inclined surface for allowing the limiting column to slide back into the slider.

[0021] By adopting the above technical solution, the limiting column in the slider can effectively prevent the slider from sliding uncontrollably away from the top of the plug plate.

[0022] The present invention is further configured such that friction blocks with different hardness can be installed in the box cover.

[0023] By adopting the above technical solution and using a plurality of friction blocks of different hardness, the denture is cyclically rubbed against the friction blocks, thereby effectively simulating the wear strength test of the denture.

[0024] In summary, the present invention mainly has the following beneficial effects:

[0025] 1. The present invention provides a mounting platform for mounting cobalt-chromium partial dentures in a rotatable manner in a box structure, and various friction blocks are fixedly connected to form a ring on the box cover. An adjusting component capable of adjusting the pressure between the denture and the friction block is provided below the denture mounting platform. The friction between the friction blocks of various hardnesses under different pressures is respectively detected for each denture. Two groups of cameras with mutually orthogonal viewing angles in the box are used to photograph the dentures in the rotating process, thereby conveniently realizing adaptive wear detection of different dentures at the same time.

[0026] 2. The present invention installs a ring track structure in the box body, and utilizes the friction wheel under the denture mounting platform to contact the ring track structure. When the fixed plate in the box body rotates, the friction wheel contacts the ring track structure, so that the denture revolves relative to the center of the box body and rotates on the mounting platform at the same time, so that the denture can fully achieve relative friction with the friction block, thereby obtaining more accurate wear information of the denture;

[0027] 3. The present invention provides a convenient plug-in structure between the fixing plate and the plug-in plate. When the dentures are tested, a corresponding number of fixing columns can be installed in the box according to the number of dentures to be tested, which effectively reduces the load of the rotating components in the box during the testing of a small number of dentures, and also facilitates the rapid replacement of the denture installation structure in the box.

[0028] 4. The present invention provides a ring-shaped mounting box on the box cover, and the friction block is inserted into the mounting box. When performing a strength test on the denture, the required number of friction blocks of different hardness can be conveniently installed according to the test requirements, or the friction blocks of different hardness can be installed on the friction box at intervals, thereby better simulating the wear of the denture by foods of different hardness in life;

[0029] 5. The present invention connects a cleaning structure under the fixed column and the fixed plate, and cleans the inside of the box while the rotating assembly rotates in the box, effectively preventing the powder generated by the relative friction between the denture and the friction block from affecting the camera shooting. A chamber for accommodating the powder is also provided in the box, which is conducive to cleaning and collecting the powder in the box;

[0030] 6. The present invention arranges cleaning brush wheel structures on both sides of the camera in the inspection box. Before the denture passes through the camera, the rotating cleaning brush wheel can clean the dust on the denture, effectively reducing the impact of dust or small particles on the denture on the camera shooting detection, thereby effectively improving the accuracy of denture strength detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 A perspective view of the present invention;

[0032] Figure 2 It is a three-dimensional diagram of the present invention in an opened state;

[0033] Figure 3 For the present invention Figure 2 A magnified view of middle;

[0034] Figure 4 Opening state stereogram for another perspective of the present invention;

[0035] Figure 5 For the present invention Figure 4 Enlarged view of middle B;

[0036] Figure 6 For the present invention Figure 4 Enlarged view of middle C;

[0037] Figure 7 A three-dimensional diagram of a fixing column of the present invention;

[0038] Figure 8 It is a three-dimensional diagram of the internal structure of the fixing column of the present invention;

[0039] Fig. 9 The box cover of the present invention is disassembled into a three-dimensional diagram of the friction block state;

[0040] Fig.10 A three-dimensional diagram of the inspection box of the present invention;

[0041] Fig.11 It is a three-dimensional diagram of the inspection box from another perspective of the present invention.

[0042] In the figure: 1. box body; 2. box cover; 3. collecting groove; 4. first ring rail; 5. second ring rail; 6. rotating table; 7. fixed plate; 701. slot; 702. slide groove; 8. plug plate; 801. plug block; 9. fixed column; 901. connecting block; 902. positioning ring; 10. mounting column; 11. friction wheel; 12. mounting table; 13. elastic component; 14. first piston; 15. pressure sensor; 16. second piston; 17. telescopic column; 18. ball head; 19. slider; 20. limit column; 21. scraper; 22. scraper; 23. collecting bin; 24. dust outlet; 25. collecting box; 26. mounting box; 27. friction block; 28. inspection box; 29. ​​first camera; 30. second camera; 31. inspection window; 32. cleaning brush wheel. DETAILED DESCRIPTION

[0043] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0044] The following describes an embodiment of the present invention based on its overall structure.

[0045] Embodiment 1

[0046] A cobalt-chromium partial denture strength testing device, such as Figure 1-11 As shown, it includes a box body 1, a box cover 2 is rotatably connected on the top of the box body 1, and a plurality of friction blocks 27 for rubbing against the denture are arranged in a ring shape toward the box body 1. A fixing component for installing the denture is rotatably connected in the box body 1, and a pressure component for applying pressure to the denture in the direction of the friction block 27 is arranged in the fixing component. Specifically, the fixing component includes a mounting table 12, and the pressure component includes a telescopic column 17 and an elastic component 13. Camera components are installed in the box cover 2 and the box body 1 towards the movement trajectory of the denture, and the viewing angles of the camera components are orthogonal to each other. Specifically, in order to make the captured image clearer, lighting lamps facing the denture are arranged around the camera component. Friction blocks 27 of different hardness can be installed in the box cover 2. By using a plurality of friction blocks 27 of different hardness, the denture is cyclically rubbed against the friction blocks 27, thereby effectively simulating the wear strength detection of the denture.

[0047] See also Figure 2-8 A rotating table 6 is rotatably connected in the box body 1, and a driving component for driving the rotating table 6 is installed. Specifically, the driving component for driving the rotating table 6 to rotate is a servo motor, and the rotation speed of the rotating table 6 is six revolutions per minute. The rotating table 6 is circumferentially connected with a plurality of horizontal fixed plates 7 at intervals, and one end of the fixed plate 7 away from the rotating table 6 is connected to one end of the plug plate 8, and the other end of the plug plate 8 is connected to a vertical fixed column 9. Specifically, a groove for vertically inserting the plug plate 8 is provided at the end of the fixed plate 7, and the top end of the fixed column 9 is slidably connected with a mounting column 10 in a vertical direction, and the top end of the mounting column 10 is connected to a mounting table 12 for mounting a denture, and the inside of the fixed column 9 is slidably connected with the mounting column 10, a first piston 14, and a second piston 16 from top to bottom in sequence.

[0048] See also Figure 2-5The box body 1 is provided with an annular collecting groove 3 lower than the first ring rail 4, the bottom end of the fixed column 9 can be connected to a scraper 21 for scraping the powder on the first ring rail 4 into the collecting groove 3, the fixed plate 7 can be connected to a scraper 22 for pushing the powder in the collecting groove 3 to the inner and outer edges of the collecting groove 3, a collecting bin 23 is provided at a position lower than the collecting groove 3 in the box body 1, a dust outlet 24 connected to the outer edge of the collecting groove 3 is opened at the top of the collecting bin 23, a collecting box 25 for collecting powder is slidably connected in the collecting bin 23, the powder falling from the first ring rail 4 is scraped into the collecting groove 3 during the rotation of the rotating table 6, so as to prevent the powder on the first ring rail 4 from affecting the sliding of the ball head 18, and the powder falling into the collecting groove 3 is gradually moved away from the rotating table 6 under the push of the scraper 22, and when passing through the dust outlet 24, the powder falls from the dust outlet 24 into the collecting box 25 in the collecting bin 23.

[0049] See also Figure 2-8 An elastic component 13 is provided between the mounting column 10 and the first piston 14. Specifically, the elastic component 13 is a spring, and may also be, for example, compressed air, elastic rubber, etc. A pressure sensor 15 is installed between the first piston 14 and the second piston 16. Specifically, the elongation of the telescopic column 17 is adjusted according to the data feedback of the pressure sensor 15, so that the pressure between the denture and the friction block 27 is maintained at a preset value. A telescopic column 17 is fixedly connected below the second piston 16. Specifically, the telescopic column 17 is coaxially arranged with the fixed column 9. The telescopic column 17 includes a fixed part and a telescopic part. The fixed part of the telescopic column 17 is fixedly connected to the second piston 16, and the telescopic part extends downward from the fixed column 9. A ball head 18 is connected at the rear, and the ball head can effectively reduce the friction resistance of the fixed column 9 when it revolves. The ball head 18 is always in contact with the top surface of the first ring rail 4 installed in the box body 1. When the ball head 18 contacts the first ring rail 4, the elastic component 13 is compressed, and the force opposite to the force that makes the denture contact the friction block 27 is applied to the first ring rail 4. The balance of the two forces can effectively improve the stability of the structure of the fixed plate 7 and the plug plate 8. Compared with directly installing the upwardly extending telescopic column 17 in the fixed column 9, it can effectively prevent the plug plate 8 from bending downward. The denture is connected by using the connecting component on the fixed column 9, so that it can revolve around the center of the rotating table 6 when the rotating table 6 is working, contact the friction block 27 and generate friction.

[0050] See also Figure 2-9The box cover 2 is provided with an inspection box 28 and a plurality of mounting boxes 26 which together form an annular structure. A friction block 27 is inserted in the mounting box 26. A first camera 29 facing the denture is installed in the inspection box 28. All the friction blocks 27 and the bottom surface of the inspection box 28 are in the same plane. The inspection box 28 is provided with an inspection window 31 at the position corresponding to the first camera 29. Specifically, the inspection window 31 is made of sapphire glass, which can effectively prevent the inspection window from being scratched by the denture during revolution, so that the first camera 2 9 can clearly capture the top surface of the denture. The inner wall of the box body 1 is connected to a second camera 30 facing the denture at the height of the denture. The viewing angle of the first camera 29 is vertically toward the top surface of the denture, while the viewing angle of the second camera 30 is horizontally toward the side of the denture. Specifically, when the denture passes through the second camera 30, since the friction wheel 11 continues to contact with the second ring rail 5, the denture can maintain a slow rotation state at this time, so that the second camera 30 can capture and detect multiple sides of the denture, effectively improving the accuracy of the detection.

[0051] See also Figure 2-9 After the rotating table 6 has worked for a preset number of circles, the first camera 29 photographs and detects the top surface of the denture, while the second camera 30 photographs and detects the side surface of the denture to determine whether the denture has completed the strength test. When the denture photographed by the first camera 29 or the second camera 30 reaches a preset degree of wear, the telescopic column 17 corresponding to the denture will shorten, and the elastic component 13 will gradually restore its original length until the denture is out of contact with the friction block 27. At this time, the number of revolutions of the denture is recorded as a basis for judging the strength of the denture.

[0052] See also Figure 2-6 The plug plate 8 is plugged into the fixed plate 7 along the vertical direction, and a vertical plug block 801 is connected to the end of the plug plate 8. A slot 701 for cooperating with the plug block 801 is provided in the fixed plate 7. The plug block 801 is used to limit the sliding of the plug plate 8 relative to the fixed plate 7 in the horizontal direction. The fixed plate 7 is provided with a slide groove 702 along the length direction, and a slider 19 is slidably connected in the slide groove 702. When the slider 19 slides to the top of the plug plate 8, it can limit the sliding of the plug plate 8 relative to the fixed plate 7 in the vertical direction. The slider 19 in the fixed plate 7 can effectively limit the upward sliding of the plug plate 8. The plug block 801 at the end of the plug plate 8 cooperates with the slot 701 to limit the horizontal direction, thereby realizing stable limiting of the plug plate 8.

[0053] Embodiment 2

[0054] A cobalt-chromium partial denture strength testing device, such as Figure 1-11As shown, on the basis of the first embodiment, the difference from the first embodiment is that the second ring rail 5 is fixedly connected in the box body 1, and the top of the fixed column 9 is connected to the positioning ring 902 through a plurality of connecting blocks 901. Specifically, the connecting block 901 includes horizontal parts at the top and bottom and a vertical part in the middle. The horizontal part of the connecting block 901 is arranged along the radial direction of the fixed column 9, and the vertical part is parallel to the axis of the fixed column 9. The mounting column 10 is connected to the positioning ring 902 and the fixed column 9 by sliding up and down at the same time. The mounting column 10 is in the positioning A friction wheel 11 is fixedly connected between the ring 902 and the fixed column 9. The height of the friction wheel 11 is smaller than the distance between the positioning ring 902 and the fixed column 9. The diameter of the friction wheel 11 is larger than the fixed column 9. The friction wheel 11 is always in contact with the side wall of the second ring rail 5. By utilizing the contact between the friction wheel 11 and the second ring rail 5, while the fixed column 9 revolves around the center of the rotating table 6, the denture rotates around the center of the mounting column 10, so that the denture is fully in contact with the friction block 27, thereby preventing the occurrence of inconsistent wear degrees of various parts along the radius of the rotating table 6.

[0055] See also Figure 3-8 After the box cover 2 is covered on the box body 1, the telescopic column 17 is extended, and the bottom surface of the friction block 27 contacts the top surface of the denture. Since the plane where the denture and food are often in contact is the top surface of the denture, testing the wear resistance of the top surface of the denture can reflect the strength of the denture. Under the action of the elastic force generated by the compression of the elastic component 13 in the fixed column 9, a force toward the friction block 27 is applied to the mounting column 10. Since the degree of wear of each friction block 27 may be inconsistent, the mounting column 10 can move in a small range in the vertical height direction. The fixed column 9 and the positioning ring 902 will not limit the friction wheel 11 within the range of vertical movement of the mounting column 10.

[0056] See also Figure 2-6 The tail end of the slider 19 is connected to the limit post 20, the limit post 20 can be retracted into the slider 19, and a spring is connected between the end and the inner wall of the slider 19. When the limit post 20 extends from the slider 19, it is located in the slot 701. The inner wall of the slot 701 is provided with an inclined surface for sliding the limit post 20 back into the slider 19. Specifically, the limit post 20 and the slide groove 702 are not in the same plane. When the head end of the slider 19 is slid toward the direction of the fixed post 9, the limit post 20 slides When it reaches the position of slot 701, the limit post 20 is extended from the slider 19 by the elastic force of the spring. When the slider 19 wants to reset to a state where it does not block the top surface of the plug board 8, the slider 19 needs to be pushed in the opposite direction so that the limit post 20 contacts the inclined surface of the slot 701. The limit post 20 compresses the spring and then retracts into the slider 19. During this process, a certain amount of thrust is required to enable the slider 19 to slide back to its original position. Therefore, the limit post 20 in the slider 19 can effectively prevent the slider 19 from sliding uncontrollably away from the top of the plug board 8.

[0057] Embodiment 3

[0058] A cobalt-chromium partial denture strength testing device, such as Figure 1-11 As shown, on the basis of Example 2, the difference from Example 2 lies in that cleaning brush wheels 32 are rotatably connected on both sides of the first camera 29 in the inspection box 28. In order to prevent the dust raised by the cleaning brush wheel 32 when working from affecting the shooting of the first camera 29, an independent sealed cavity is provided in the inspection box 28 at the first camera 29. A driving motor for independently driving the cleaning brush wheel 32 is installed in the inspection box 28. The driving motor drives the cleaning brush wheel 32 to rotate while the rotating table 6 is working.

[0059] See also Figure 10-11 The bottom surface of the cleaning brush wheel 32 extends downward beyond the bottom surface of the inspection box 28. The brush of the cleaning brush wheel 32 is a soft brush and will not block the revolution of the denture. The cleaning brush wheel 32 can clean the top of the denture and remove the powder generated by friction, thereby effectively improving the accuracy of camera detection.

[0060] The working principle of the present invention is as follows: the dentures to be tested are respectively installed on each mounting platform 12, the plug block 801 of the plug plate 8 is aligned with the slot 701 and inserted, and then the slider 19 is made to slide in the slide groove 702 to the top of the plug plate 8, and the limit column 20 at the tail end of the slider 19 limits the sliding of the slider 19, and the slider 19 limits the plug plate 8 from being pulled out upward, so that the plug plate 8 is stably connected with the fixed plate 7, and after installing a suitable number and hardness of friction blocks 27 on the box cover 2, the box cover 2 is closed to rotate the rotating table 6, and after the box cover 2 is closed, the telescopic column 17 under each denture extends a corresponding length to compress the elastic component 13 in the fixed column 9, and the force generated by the compression of the elastic component 13 makes the denture close to the friction block 27, and the expansion and contraction amount of the elastic component 13 is controlled by controlling the length of the telescopic column 17, and then the pressure between each denture and the friction block 27 is adjusted individually, and the denture revolves around the center of the rotating table 6. At the same time, due to the connection between the friction wheel 11 and the second ring rail 5, The denture also rotates around the center of the fixed column 9 at the same time. During the rotation, the ball head 18 at the bottom end of the telescopic column 17 is always in contact with the first ring rail 4 to keep the pressure between the denture and the friction block 27 constant. The denture circulates and rubs against each friction block 27. The powder generated during the friction process falls into the first ring rail 4 or the collecting groove 3. The powder is pushed by the scraper 21 and the scraper 22 until it falls from the dust outlet 24 into the collection box 25 in the collection bin 23. After the rotating table 6 rotates a predetermined number of times, the rotating table 6 slows down or stops rotating when the denture on the mounting table 12 passes the first camera 29 and the second camera 30. The first camera 29 and the second camera 30 take pictures and detect the denture. When the strength test of a denture is completed, the telescopic column 17 corresponding to the denture is shortened, and the strength test of the denture can be ended. The box cover 2 can be opened after the strength test of all dentures in the box is completed, and the test work for a batch of denture samples is completed.

[0061] Although an embodiment of the present invention has been shown and described, this specific embodiment is only an explanation of the present invention and is not a limitation of the invention. The specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions and variations to the embodiments without creative contribution as needed without departing from the principles and purpose of the present invention. However, as long as they are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. A cobalt-chromium partial denture strength testing device, comprising a housing (1), characterized in that: A box cover (2) is connected to the top of the box body (1), and a plurality of friction blocks (27) for rubbing against the artificial teeth are arranged in a ring on the box cover (2) toward the inside of the box body (1). A fixing component for mounting the artificial teeth is rotatably connected inside the box body (1), and a pressure applying component for applying pressure to the artificial teeth in a direction toward the friction blocks (27) is arranged inside the fixing component. Camera components are installed in the box cover (2) and the box body (1) toward the movement trajectory of the artificial teeth, and the viewing angles of the camera components are orthogonal to each other. A rotating table (6) is rotatably connected inside the box body (1), and a driving device is installed. A driving assembly of a rotating table (6), wherein the rotating table (6) is connected to a plurality of horizontal fixing plates (7) at intervals in an annular direction, one end of the fixing plate (7) away from the rotating table (6) is connected to one end of an inserting plate (8), the other end of the inserting plate (8) is connected to a vertical fixing column (9), the top end of the fixing column (9) is slidably connected to a mounting column (10) in a vertical direction, the top end of the mounting column (10) is connected to a mounting table (12) for mounting a denture, and the inside of the fixing column (9) is slidably connected to the mounting column (10), a first piston (14), a second piston (15), and a second piston (16) in sequence from top to bottom. The first piston (16) is provided with an elastic component (13) between the mounting column (10) and the first piston (14), a pressure sensor (15) is installed between the first piston (14) and the second piston (16), a telescopic column (17) is fixedly connected below the second piston (16), the telescopic column (17) comprises a fixed part and a telescopic part, the fixed part of the telescopic column (17) is fixedly connected to the second piston (16), and the telescopic part extends downward from the fixed column (9) and is connected to a ball head (18), the ball head (18) is always connected to the mounting column (9) in the box body (1). The housing (1) is provided with a second ring rail (5) fixedly connected therein; the top of the fixing column (9) is connected to a positioning ring (902) via a plurality of connecting blocks (901); the mounting column (10) is connected to the positioning ring (902) and the fixing column (9) by sliding up and down at the same time; the mounting column (10) is fixedly connected to a friction wheel (11) between the positioning ring (902) and the fixing column (9); the diameter of the friction wheel (11) is larger than that of the fixing column (9); and the friction wheel (11) is always in contact with the side wall of the second ring rail (5).

2. The cobalt-chromium partial denture strength testing device according to claim 1, characterized in that: The box cover (2) is provided with an inspection box (28) and a plurality of mounting boxes (26) which together form an annular structure. A friction block (27) is inserted into the mounting box (26). A first camera (29) facing the denture is installed in the inspection box (28). The bottom surfaces of all the friction blocks (27) and the inspection box (28) are located in the same plane. The inspection box (28) is provided with an inspection window (31) at a position corresponding to the first camera (29). The inner wall of the box body (1) is connected to a second camera (30) facing the denture at a height where the denture is located. The viewing angle of the first camera (29) is vertically directed toward the top surface of the denture, while the viewing angle of the second camera (30) is horizontally directed toward the side surface of the denture.

3. The cobalt-chromium partial denture strength testing device according to claim 2, characterized in that: Cleaning brush wheels (32) are rotatably connected to both sides of the first camera (29) in the visual inspection box (28), and the bottom surface of the cleaning brush wheel (32) extends downward beyond the bottom surface of the visual inspection box (28).

4. The cobalt-chromium partial denture strength testing device according to claim 1, characterized in that: The box body (1) is provided with an annular collecting groove (3) lower than the first ring rail (4); the bottom end of the fixed column (9) can be connected to a scraper (21) for scraping powder on the first ring rail (4) into the collecting groove (3); the fixed plate (7) can be connected to a scraper (22) for pushing the powder in the collecting groove (3) toward the inner and outer edges of the collecting groove (3); a collecting bin (23) is provided in the box body (1) at a position lower than the collecting groove (3); a dust outlet (24) communicating with the outer edge of the collecting groove (3) is provided at the top of the collecting bin (23); and a collecting box (25) for collecting powder is slidably connected in the collecting bin (23).

5. The cobalt-chromium partial denture strength testing device according to claim 1, characterized in that: The plug plate (8) is plugged into the fixed plate (7) in a vertical direction, a vertical plug block (801) is connected to the end of the plug plate (8), a slot (701) for matching the plug block (801) is provided in the fixed plate (7), the plug block (801) is used to limit the plug plate (8) from sliding relative to the fixed plate (7) in a horizontal direction, a sliding groove (702) is provided in the fixed plate (7) along the length direction, and a slider (19) is slidably connected in the sliding groove (702), and when the slider (19) slides to the top of the plug plate (8), it can limit the plug plate (8) from sliding relative to the fixed plate (7) in a vertical direction.

6. The cobalt-chromium partial denture strength testing device according to claim 5, characterized in that: The rear end of the slider (19) is connected to a limiting post (20), the limiting post (20) can be retracted into the slider (19), and a spring is connected between the end and the inner wall of the slider (19), the limiting post (20) is located in the slot (701) when extending from the slider (19), and the inner wall of the slot (701) is provided with an inclined surface for allowing the limiting post (20) to slide back into the slider (19).

7. The cobalt-chromium partial denture strength testing device according to claim 1, characterized in that: Friction blocks (27) of different hardness can be installed in the box cover (2).

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