A device for precisely preparing a wear-resistant coating on a surface of a denture

Abstract

The application discloses a precision preparation device for a wear-resistant coating on a surface of a false tooth and relates to the field of false tooth preparation.The device comprises a preparation device, a support platform is fixedly installed on the upper surface of the preparation device, a plurality of equipment processing parts are arranged around the edge of the upper surface of the support platform, a fixing groove is formed in the middle of the top of the support platform, a five-axis linkage table is rotatably installed on the inner wall bottom of the fixing groove, a multidirectional adjusting mechanism is arranged on the upper surface of the five-axis linkage table and is used for adjusting the processing angle of the false tooth, and the multidirectional adjusting mechanism comprises a No.1 support base.Through the five-axis linkage table and the multidirectional adjusting mechanism, the structure design of the double-drive part linkage universal shaft can drive the false tooth to realize full-dimension and dead-angle-free posture adjustment in space, ensure that the coating deposition particles are always perpendicular to the surface to be processed, fundamentally solve the problems of uneven curved surface deposition and existence of shadow dead angle caused by the fixed target position and simple rotating stand of the existing device, and improve the uniformity and precision of coating preparation compared with the prior art.

Description

Technical Field

[0001] This invention relates to denture fabrication technology, specifically to a device for precisely preparing a wear-resistant coating on the surface of dentures. Background Technology

[0002] In the fields of clinical prosthodontics and denture manufacturing, denture surface coating preparation refers to the core processing step of preparing a functional, wear-resistant, and protective coating with high hardness, low coefficient of friction, and excellent biocompatibility on the surface of various dental prostheses, such as all-ceramic dentures, metal dentures, and resin-based dentures, using surface engineering techniques such as physical vapor deposition, chemical vapor deposition, and surface modification. This process effectively solves problems such as occlusal surface wear, marginal chipping, and abnormal wear of opposing natural teeth that occur during the long-term service of dentures in the oral cavity. It directly determines the clinical lifespan, occlusal stability, and restorative effect of dentures and is an indispensable key process in the precision manufacturing of personalized dentures. As dental prosthodontics technology develops towards high precision, long lifespan, and minimally invasive techniques, the industry has placed stringent nanometer-level requirements on the uniformity of denture wear-resistant coating thickness, preparation accuracy, and surface adaptability.

[0003] However, most existing devices for preparing wear-resistant coatings for dentures are general-purpose industrial coating equipment, lacking specific structural design and optimization tailored to the structural characteristics of denture products. This results in insurmountable technical defects during actual fabrication: customized dentures possess extremely complex three-dimensional anatomical morphology; a single crown contains numerous irregular curved surfaces with abrupt curvature changes, including cusps, pits, fissures, proximal surfaces, axial surfaces, and cervical margins. Fixed bridges and complete dentures exhibit even more complex structural features, such as continuous changes in multiple curved surfaces and numerous concave dead angles. Existing devices generally employ a fixed target position combined with a simple rotating workpiece holder, which cannot adapt to the complex morphological changes of denture surfaces. This leads to variations in the incident angle and deposition distance of coating particles at different curved surface positions on the denture. Significant differences in coating thickness can easily lead to deposition shadows in hidden areas such as pits, fissures, and proximal surfaces, resulting in uneven coating thickness distribution and large differences in density. Furthermore, existing devices lack precise measurement and control structures for the micro-areas of the denture's curved surfaces, making it impossible to monitor and dynamically adjust the coating deposition state at different locations in real time. This directly leads to a complete loss of control over coating preparation precision. Not only is excessively thick coating on the occlusal surface prone to damaging denture occlusal accuracy and causing poor clinical placement and occlusal interference, but also excessively thin coating on areas such as the cervical margin and proximal surfaces fails to provide wear-resistant protection. This significantly reduces the finished product qualification rate and clinical reliability of denture wear-resistant coatings, making it difficult to meet the high-precision and high-consistency preparation requirements of the dental restoration field for denture wear-resistant coatings. Summary of the Invention

[0004] The purpose of this invention is to provide a precision preparation device for wear-resistant coatings on denture surfaces, in order to solve the problems in the prior art where wear-resistant coating preparation devices cannot adapt to the complex curved surfaces of dentures, are prone to uneven coating deposition and loss of precision, and have scattered preparation processes, multiple clamping operations that easily lead to positioning errors and surface contamination, and low production efficiency.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a device for precise preparation of wear-resistant coating on denture surface, comprising a preparation device, a support platform fixedly installed on the upper surface of the preparation device, a plurality of processing parts arranged around the edge of the upper surface of the support platform, a fixed groove opened at the top center of the support platform, a five-axis linkage table rotatably installed at the bottom of the inner wall of the fixed groove, and a multi-directional adjustment mechanism provided on the upper surface of the five-axis linkage table for adjusting the processing angle of the denture;

[0006] The multi-directional adjustment mechanism includes a first support, which is fixedly installed on the edge of the upper surface of the five-axis linkage platform. A second drive unit is provided on the upper surface of the first support. A connecting frame is installed at the output end of the second drive unit. A universal shaft is rotatably installed inside the connecting frame. An adsorption element is provided on the upper surface of the universal shaft. A denture is adsorbed on the upper surface of the adsorption element.

[0007] A second support is fixedly installed on the upper surface of the five-axis linkage platform perpendicular to the first support. A third drive unit is provided on the upper surface of the second support. A first connector is installed at the output end of the third drive unit. A second connector is rotatably installed at the bottom middle of the first connector. The top of the second connector is rotatably installed on the outer surface of the universal joint.

[0008] The preparation equipment is also equipped with an intermittent transmission structure, which is used to adjust the denture to be placed in different processing sections of the equipment for processing.

[0009] Furthermore, the intermittent transmission structure includes a fixed inner cavity, which is located at the bottom of the preparation equipment. A support shaft extends from the middle of the bottom end of the five-axis linkage table into the fixed inner cavity. A grooved wheel is fixedly connected to the top of the outer surface of the support shaft, and several guide grooves are formed on the outer surface of the grooved wheel.

[0010] A first driving part is provided at the bottom of one side of the inner wall of the fixed inner cavity. A control plate is installed at the output end of the upper surface of the first driving part. A limit lever is fixedly connected to one side of the upper surface of the control plate.

[0011] Furthermore, near the bottom of the grooved wheel, the outer diameter of the limiting lever is smaller than the distance between the two sides of the inner wall of the guide groove, and the middle part of one side of the outer surface of the limiting lever is located inside the guide groove, and the guide groove and the limiting lever are engaged with each other.

[0012] Furthermore, the upper surface of the support platform is a hexagonal structure, and the number of equipment processing parts is five. The equipment processing parts are correspondingly arranged on the side of the outer surface of the support platform, and each side of the outer surface of the support platform forms an open space.

[0013] Furthermore, electromagnetic shielding isolation doors are provided at the bottom of both the front and rear ends of the processing section of the equipment. A sealing door body is movably installed on one side of the inner wall of the electromagnetic shielding isolation door, and the bottom surface of the sealing door body abuts against the upper surface of the five-axis linkage table.

[0014] Furthermore, the number of guide grooves is six, and the guide grooves and the equipment processing section are arranged vertically aligned.

[0015] Furthermore, the upper surface of the adsorption element is provided with an adsorption port, and the bottom end of the adsorption element extends through a universal joint to the inside of the preparation equipment where a connecting air pipe is installed. The lower bottom surface of the denture is engaged in the opening of the adsorption port.

[0016] Furthermore, the connecting frame and the second connecting member rotate in the same direction, while the first connecting member rotates in a direction perpendicular to the rotation directions of the connecting frame and the second connecting member.

[0017] Compared with the prior art, the device for precisely preparing a wear-resistant coating on the surface of a denture provided by the present invention has the following beneficial effects:

[0018] 1. This invention, through a five-axis linkage stage combined with a multi-directional adjustment mechanism and a dual-drive unit linked universal joint structure design, can drive the denture to achieve full-dimensional, dead-angle-free posture adjustment within space. It can adjust the relative angle between the surface to be processed and the processing execution end in real time for complex anatomical surfaces such as cusps, pits, fissures, proximal surfaces, and cervical margins of dentures, ensuring that the coating deposition particles are always perpendicularly incident on the surface to be processed. This fundamentally solves the problems of uneven surface deposition and shadow dead angles caused by fixed target positions and simple rotating frames in existing devices. Compared with existing technologies, it improves the uniformity and accuracy of coating preparation.

[0019] 2. This invention utilizes the micro-negative pressure adsorption structure of the adsorption component to adsorb and fix the denture using the uncoated inner crown bonding surface. This completely avoids obstructing all areas to be coated, including the occlusal surface, axial surface, and proximal surface of the denture. This solves the problem of incomplete coating coverage caused by existing clamps obstructing the surface to be processed. At the same time, it avoids scratches and damage to the denture surface caused by mechanical clamping. Compared with existing technologies, this invention improves the integrity of coating preparation and the yield rate of finished products.

[0020] 3. This invention, through an intermittent transmission structure and a surrounding multi-station processing unit, enables the entire process of pretreatment, deposition, testing, and posttreatment for denture wear-resistant coating preparation to be completed continuously within the same device. This eliminates the need for multiple clamping and transfer of dentures between devices, avoiding the cumulative positioning errors caused by multiple clamping and preventing secondary surface contamination during transfer. Compared with existing technologies, this invention improves preparation efficiency and the adhesion between the coating and the substrate.

[0021] 4. This invention achieves intermittent transmission through a Geneva mechanism, which can drive a five-axis linkage table to complete precise indexing rotation, accurately positioning the denture to the corresponding processing station. The transmission is smooth and the positioning accuracy is high. With the electromagnetic shielding isolation door of the equipment's processing section, the cavity can be sealed and isolated after the denture enters the corresponding processing section, avoiding plasma cross-interference and target material cross-contamination between different processes, ensuring the processing stability of each process, and allowing multiple stations to operate simultaneously. Compared with the existing technology, this invention improves the operating stability and batch processing efficiency of the device. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0023] Figure 1 This is a schematic diagram of the overall structure provided for an embodiment of the present invention;

[0024] Figure 2 This is a schematic cross-sectional view of the preparation equipment provided in an embodiment of the present invention;

[0025] Figure 3 This is a schematic diagram of the internal structure of the fixed cavity provided in an embodiment of the present invention;

[0026] Figure 4 This is a schematic diagram of the adsorption element structure provided in an embodiment of the present invention;

[0027] Figure 5 The diagram shows the structure of connector No. 1 and connector No. 2 provided in the embodiment of the present invention.

[0028] Explanation of reference numerals in the attached figures:

[0029] 1. Preparation equipment; 2. Support platform; 3. Equipment processing department; 4. Fixing groove; 5. Five-axis linkage table; 6. Fixed inner cavity; 7. Support shaft; 8. Grooved wheel; 9. Guide groove; 10. First drive unit; 11. Control panel; 12. Limit lever; 13. Support No. 1; 14. Second drive unit; 15. Connecting frame; 16. Universal joint; 17. Adsorption component; 18. Adsorption port; 19. Connecting air pipe; 20. Support No. 2; 21. Third drive unit; 22. Connecting component No. 1; 23. Connecting component No. 2; 24. Electromagnetic shielding isolation door; 25. Sealed door body. Detailed Implementation

[0030] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0031] As attached Figure 1 To be continued Figure 5 As shown:

[0032] Example 1:

[0033] This invention provides a device for precisely preparing a wear-resistant coating on the surface of a denture, including a preparation device 1. A support platform 2 is fixedly installed on the upper surface of the preparation device 1. Several processing parts 3 are arranged around the edge of the upper surface of the support platform 2. The upper surface of the support platform 2 has a hexagonal structure. There are five processing parts 3, which are correspondingly arranged on the side of the outer surface of the support platform 2. Each side of the outer surface of the support platform 2 forms an open space. A fixing groove 4 is opened in the middle of the top of the support platform 2. A five-axis linkage table 5 is rotatably installed at the bottom of the inner wall of the fixing groove 4. A multi-directional adjustment mechanism is provided on the upper surface of the five-axis linkage table 5 for adjusting the processing angle of the denture.

[0034] The multi-directional adjustment mechanism includes a first support 13, which is fixedly installed on the edge of the upper surface of the five-axis linkage table 5. A second drive unit 14 is provided on the upper surface of the first support 13. A connecting frame 15 is installed at the output end of the second drive unit 14. A universal shaft 16 is rotatably installed inside the connecting frame 15. An adsorption element 17 is provided on the upper surface of the universal shaft 16. A denture is adsorbed on the upper surface of the adsorption element 17.

[0035] The upper surface of the adsorption component 17 is provided with an adsorption port 18. The bottom end of the adsorption component 17 extends through the universal shaft 16 to the inside of the preparation equipment 1 and is equipped with a connecting air pipe 19. The lower bottom surface of the denture is engaged in the opening of the adsorption port 18.

[0036] A second support 20 is fixedly installed on the upper surface of the five-axis linkage table 5 at a position perpendicular to the first support 13. A third drive unit 21 is provided on the upper surface of the second support 20. A first connector 22 is installed at the output end of the third drive unit 21. A second connector 23 is rotatably installed at the bottom middle of the first connector 22. The top of the second connector 23 is rotatably installed on the outer surface of the universal joint 16.

[0037] The connecting frame 15 and the second connecting piece 23 rotate in the same direction, while the first connecting piece 22 rotates in a direction perpendicular to the rotation directions of the connecting frame 15 and the second connecting piece 23.

[0038] The preparation equipment 1 is also equipped with an intermittent transmission structure, which is used to adjust the dentures to be processed in different processing sections 3.

[0039] Working principle: First, the staff completes the pre-start debugging of the device, confirms that all drive components, negative pressure system and equipment processing section 3 are in normal standby state, and completes the device initialization;

[0040] Next, the staff placed the pre-treated denture to be processed on the suction component 17 at the loading and unloading opening of the support platform 2, so that the bonding surface of the inner crown of the denture was in contact with the suction port 18, and the negative pressure system was activated to firmly suction and fix the denture. This method only contacts the non-processed surface of the denture, without obstruction or damage, providing a stable foundation for subsequent processing.

[0041] Then, the staff starts the fully automated processing flow. The intermittent transmission structure drives the five-axis linkage table 5 to complete the indexing rotation, accurately transporting the denture to the plasma etching pretreatment station. After the equipment processing section 3 is closed and sealed, the multi-directional adjustment mechanism starts working. During the processing, the second drive unit 14 and the third drive unit 21 work together. Through the linkage of the connecting frame 15, the first connecting part 22 and the second connecting part 23, the universal joint 16 is driven to make full-dimensional posture adjustments, so that all surfaces of the denture to be treated can be etched evenly, ensuring the consistency of the pretreatment effect.

[0042] After the pretreatment is completed, the intermittent transmission structure sequentially transports the denture to the coating deposition, thickness detection, passivation post-treatment, and finished product cleaning stations. During each process, the multi-directional adjustment mechanism can adjust the denture posture in real time according to the process requirements. It dynamically adjusts the relative angle between the denture and the processing end for the complex curved surface of the denture to ensure uniform coating deposition without dead corners and solve the problems of uneven deposition and shadow dead corners on curved surfaces.

[0043] Finally, after all processes are completed, the five-axis linkage stage 5 is reset to the loading and unloading station, and the operator shuts off the negative pressure system to remove the finished denture, completing the entire preparation process. The entire process requires only one clamping to complete continuous processing of all steps, avoiding positioning errors and surface contamination from multiple clampings, and significantly improving preparation accuracy and efficiency.

[0044] Example 2:

[0045] This embodiment is basically the same as the previous embodiment, except that the intermittent transmission structure includes a fixed inner cavity 6, which is located at the bottom of the preparation equipment 1. A support shaft 7 is provided in the fixed inner cavity 6, which extends from the middle of the bottom end of the five-axis linkage table 5. A grooved wheel 8 is fixedly connected to the top of the outer surface of the support shaft 7, and a plurality of guide grooves 9 are provided on the outer surface of the grooved wheel 8.

[0046] A first drive unit 10 is provided at the bottom of one side of the inner wall of the fixed inner cavity 6. A control plate 11 is installed at the output end of the upper surface of the first drive unit 10. A limit lever 12 is fixedly connected to one side of the upper surface of the control plate 11.

[0047] The first drive unit 10, the second drive unit 14 and the third drive unit 21 are all servo self-locking motors;

[0048] The control plate 11 is located near the bottom of the groove wheel 8. The outer diameter of the limit lever 12 is smaller than the distance between the two sides of the inner wall of the guide groove 9. The middle part of one side of the outer surface of the limit lever 12 is located inside the guide groove 9. The guide groove 9 and the limit lever 12 are engaged with each other.

[0049] There are six guide grooves 9, and the guide grooves 9 and the equipment processing section 3 are arranged vertically aligned.

[0050] Working principle: First, during the device initialization phase, the staff completes the parameter calibration of the first drive unit 10, confirms that the guide groove 9 of the Geneva wheel 8 corresponds one-to-one with each station, and ensures the accuracy of the indexing rotation.

[0051] When the control system issues a workstation switching command, the first drive unit 10 starts, driving the control panel 11 to rotate at a fixed angle. The limit lever 12 on the control panel 11 is inserted into the guide groove 9 of the grooved wheel 8, and drives the grooved wheel 8 and the support shaft 7 to rotate through the engagement transmission. When the control panel 11 completes the preset angle rotation, the limit lever 12 disengages from the guide groove 9, and the grooved wheel 8 and the five-axis linkage table 5 stop synchronously, completing a precise 60° indexing rotation and transporting the denture to the target workstation.

[0052] During the processing, after each step is completed, the first drive unit 10 repeats the above actions to achieve sequential switching of workstations. The first drive unit 10 uses a servo self-locking motor, which can lock immediately after the workstation switching is completed. In conjunction with the locking structure of the grooved wheel 8, it prevents the five-axis linkage table 5 from rotating accidentally, ensuring positioning stability during the processing. After all steps are completed, the first drive unit 10 drives the five-axis linkage table 5 to reset to the loading and unloading workstation, completing one processing cycle.

[0053] Example 3:

[0054] This embodiment is basically the same as the previous embodiment, except that electromagnetic shielding isolation doors 24 are provided at the bottom of both the front and rear ends of the equipment processing section 3, and a sealing door 25 is movably installed on one side of the inner wall of the electromagnetic shielding isolation door 24, with the bottom surface of the sealing door 25 abutting against the upper surface of the five-axis linkage table 5.

[0055] Working principle: First, during device initialization, the action interlocking settings between the electromagnetic shielding isolation door 24 and the five-axis linkage table 5 are completed to ensure that the five-axis linkage table 5 can only rotate after the door is fully opened, thus avoiding structural interference.

[0056] After the five-axis linkage stage 5 accurately delivers the denture to the workstation of the target equipment processing section 3, the control system sends a closing command to the electromagnetic shielding isolation door 24, driving the sealing door 25 to descend synchronously until its bottom surface tightly abuts against the upper surface of the five-axis linkage stage 5, forming a closed and independent processing chamber with the cavity of the equipment processing section 3.

[0057] After the sealing door 25 is closed, it can isolate electromagnetic interference from the inside and outside of the chamber, ensuring the stability of the processing technology, and prevent the leakage of process gases, dust and debris, avoiding cross-contamination between different workstations, and providing a stable sealed environment for the processing. After this process is completed, the electromagnetic shielding isolation door 24 drives the sealing door 25 to rise and open synchronously, releasing the obstruction of the five-axis linkage table 5, so that the intermittent transmission structure can drive the denture to switch to the next workstation, repeating the above door opening and closing process until all processes are completed.

[0058] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A device for precisely preparing a wear-resistant coating on the surface of a denture, comprising a preparation device (1), wherein a support platform (2) is fixedly mounted on the upper surface of the preparation device (1), characterized in that, The upper surface of the support platform (2) is surrounded by several equipment processing parts (3). A fixed groove (4) is opened at the middle of the top of the support platform (2). A five-axis linkage table (5) is rotatably installed at the bottom of the inner wall of the fixed groove (4). A multi-directional adjustment mechanism is provided on the upper surface of the five-axis linkage table (5) for adjusting the processing angle of the denture. The multi-directional adjustment mechanism includes a first support (13), which is fixedly installed on the edge of the upper surface of the five-axis linkage table (5). A second drive unit (14) is provided on the upper surface of the first support (13). A connecting frame (15) is installed at the output end of the second drive unit (14). A universal joint (16) is rotatably installed inside the connecting frame (15). An adsorption element (17) is provided on the upper surface of the universal joint (16). A denture is adsorbed on the upper surface of the adsorption element (17). The upper surface of the five-axis linkage table (5) is fixedly installed with a second support (20) perpendicular to the first support (13). The upper surface of the second support (20) is provided with a third drive unit (21). A first connector (22) is installed at the output end of the third drive unit (21). A second connector (23) is rotatably installed at the bottom middle of the first connector (22). The top of the second connector (23) is rotatably installed on the outer surface of the universal joint (16). The preparation equipment (1) is also equipped with an intermittent transmission structure for adjusting the denture to be placed in different processing sections (3) for processing.

2. The device for precisely preparing a wear-resistant coating on a denture surface according to claim 1, characterized in that, The intermittent transmission structure includes a fixed inner cavity (6), which is located at the bottom of the preparation equipment (1). The bottom middle of the five-axis linkage table (5) extends into the fixed inner cavity (6) and a support shaft (7) is provided therein. A grooved wheel (8) is fixedly connected to the top of the outer surface of the support shaft (7). Several guide grooves (9) are provided on the outer surface of the grooved wheel (8). A first driving part (10) is provided at the bottom of one side of the inner wall of the fixed inner cavity (6). A control plate (11) is installed at the output end of the upper surface of the first driving part (10). A limit lever (12) is fixedly connected to one side of the upper surface of the control plate (11).

3. The device for precisely preparing a wear-resistant coating on a denture surface according to claim 2, characterized in that, The control disc (11) is located near the bottom of the groove wheel (8). The outer diameter of the limiting lever (12) is smaller than the distance between the two sides of the inner wall of the guide groove (9). The middle part of one side of the outer surface of the limiting lever (12) is located inside the guide groove (9). The guide groove (9) and the limiting lever (12) are engaged with each other.

4. The device for precisely preparing a wear-resistant coating on a denture surface according to claim 1, characterized in that, The upper surface of the support platform (2) is a hexagonal structure. There are five processing parts (3). The processing parts (3) are respectively located on the side of the outer surface of the support platform (2). Each side of the outer surface of the support platform (2) forms an open space.

5. The device for precisely preparing a wear-resistant coating on a denture surface according to claim 1, characterized in that, Electromagnetic shielding isolation doors (24) are provided at the bottom of both the front and rear ends of the processing section (3). A sealing door body (25) is movably installed on one side of the inner wall of the electromagnetic shielding isolation door (24). The bottom surface of the sealing door body (25) abuts against the upper surface of the five-axis linkage table (5).

6. The device for precisely preparing a wear-resistant coating on a denture surface according to claim 2, characterized in that, The number of guide grooves (9) is six, and the guide grooves (9) and the equipment processing section (3) are arranged vertically aligned.

7. The device for precisely preparing a wear-resistant coating on a denture surface according to claim 1, characterized in that, The upper surface of the adsorption element (17) is provided with an adsorption port (18). The bottom end of the adsorption element (17) extends through the universal joint (16) to the preparation equipment (1) and is equipped with a connecting air pipe (19). The bottom surface of the denture is engaged in the opening of the adsorption port (18).

8. The device for precisely preparing a wear-resistant coating on a denture surface according to claim 1, characterized in that, The connecting frame (15) and the second connecting piece (23) rotate in the same direction, and the first connecting piece (22) rotates in a direction perpendicular to the rotation direction of the connecting frame (15) and the second connecting piece (23).

Images