Defect detection device for surface of dental restoration product

Abstract

The utility model belongs to the technical field of defect detection, and particularly relates to a defect detection device for the surface of a dental restoration product, which comprises a support base, a plurality of conveying rollers and a machine vision component, the plurality of conveying rollers are rotatably connected to the inner side of the support base, and the top end of the support base is fixedly connected with a support frame; two sequencing guide plates are fixedly connected to the top end of the supporting base, a linkage base is arranged above the supporting base, the machine vision assembly is fixedly connected to the bottom end of the linkage base, a plurality of trigger blocks are fixedly connected to the bottom end of the linkage base, and a positioning frame is arranged between the linkage base and the supporting base; through cooperation of the sorting guide plate, the positioning frame and other parts, when the zirconia porcelain block is subjected to surface defect detection through the vision technology, the zirconia porcelain block can be positioned relative to the position of the machine vision assembly, so that the image processing analysis result of the machine vision assembly on the zirconia porcelain block is ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of defect detection, and particularly relates to a defect detection device for the surface of dental restoration products. Background Art

[0002] Porcelain teeth are relatively common in dental restoration products. They are usually made of zirconia ceramic blocks. After the zirconia ceramic blocks are manufactured, some defects often occur, such as cracks, spots, breakages, etc. If defects appear on the surface of the zirconia ceramic blocks, it will cause problems with the quality of the final dental restoration products. Therefore, defect detection is carried out on the zirconia ceramic blocks after production. At present, when generally detecting the surface defects of zirconia ceramic blocks based on machine vision technology, the principle is to use a camera to collect images of the surface of the zirconia ceramic blocks, and analyze the surface defects through an image processing algorithm. When using this method to collect images of the zirconia ceramic blocks by the camera, if the zirconia ceramic blocks are tilted during transportation, etc., it will cause their positions to deviate from the original positions, resulting in a certain angle between the camera and the zirconia ceramic blocks, leading to low image collection quality, thus affecting the final image processing and analysis results. Content of the Utility Model

[0003] The utility model provides a defect detection device for the surface of dental restoration products, which has the characteristic that when detecting the quality of zirconia ceramic blocks based on machine vision technology, the position of the zirconia ceramic blocks can be positioned, so as to ensure the final image processing and analysis effect.

[0004] The utility model provides the following technical solutions: including a support base, a plurality of conveying rollers and a machine vision component. The plurality of conveying rollers are all rotatably connected to the inner side of the support base. A support frame is fixedly connected to the top end of the support base. Two sorting guide plates are fixedly connected to the top end of the support base. A linkage seat is arranged above the support base. The machine vision component is fixedly connected to the bottom end of the linkage seat. A plurality of trigger blocks are fixedly connected to the bottom end of the linkage seat. A positioning frame is arranged between the linkage seat and the support base. The trigger blocks slide inside the positioning frame. A driving rod is fixedly connected to one side of the positioning frame. A diversion rod slides above the support base.

[0005] Wherein, a guide block is fixedly connected to one side of the support frame. A driving block is fixedly connected to the top end of the linkage seat. The driving block slides inside the guide block.

[0006] Wherein, a collection bin is fixedly connected to one side of the support base. A concentration bin is fixedly connected to the other side of the support base.

[0007] Among them, a positioning groove is formed inside the positioning frame, and a first driving part is fixedly connected to one side of the support base, and the driving rod is slidably connected to one side of the first driving part.

[0008] Among them, a second driving part is fixedly connected to one side of the support base, and the diversion rod is slidably connected to the top of the second driving part.

[0009] The beneficial effects of the utility model are as follows: Through the cooperation of components such as the sorting guide plate and the positioning frame, when the surface defects of the zirconia ceramic block are detected by visual technology, the position of the zirconia ceramic block relative to the machine vision component can be positioned, so as to ensure the image processing and analysis results of the machine vision component for the zirconia ceramic block.

[0010] The parts not involved in this device are the same as the prior art or can be realized by using the prior art. Description of the Drawings

[0011] Figure 1 is a three-dimensional structural schematic diagram of the utility model;

[0012] Figure 2 is a state schematic diagram when the utility model is in use;

[0013] Figure 3 is a three-dimensional structural schematic diagram of the linkage seat and the positioning frame in the utility model;

[0014] Figure 4 is Figure 1 an enlarged schematic diagram of part A in

[0015] In the figure: 1. Support base; 11. Conveyor roller; 12. Support frame; 121. Guide block; 13. Collection bin; 14. Central bin; 2. Sorting guide plate; 3. Linkage seat; 31. Machine vision component; 32. Trigger block; 33. Driving block; 4. Positioning frame; 41. Driving rod; 42. Positioning groove; 43. First driving part; 5. Diversion rod; 51. Second driving part. Detailed Embodiment

[0016] Please refer to Figures 1 - 4 , the utility model provides the following technical solutions: including a support base 1, a plurality of conveyor rollers 11 and a machine vision component 31. A plurality of conveyor rollers 11 are rotatably connected to the inside of the support base 1. A support frame 12 is fixedly connected to the top of the support base 1. Two sorting guide plates 2 are fixedly connected to the top of the support base 1. A linkage seat 3 is arranged above the support base 1. The machine vision component 31 is fixedly connected to the bottom of the linkage seat 3. A plurality of trigger blocks 32 are fixedly connected to the bottom of the linkage seat 3. A positioning frame 4 is arranged between the linkage seat 3 and the support base 1. The trigger blocks 32 slide inside the positioning frame 4. A driving rod 41 is fixedly connected to one side of the positioning frame 4. A diversion rod 5 slides above the support base 1.

[0017] In this embodiment: The support base 1 is used to support and connect various components, so as to complete the defect detection work of dental restoration products, that is, zirconia ceramic blocks, through the cooperation of other components. A number of conveying rollers 11 rotate inside the support base 1. The conveying rollers 11 are used for the conveying work of zirconia ceramic blocks, so that the zirconia ceramic blocks can be conveyed to the position corresponding to the machine vision component 31. Then, the machine vision component 31 collects images of the surface of the zirconia ceramic blocks, and the image processing algorithm completes the detection and analysis work of the surface defect conditions of the zirconia ceramic blocks. A sorting guide plate 2 is fixed at the top of the support base 1. When the conveying rollers 11 convey the zirconia ceramic blocks, the zirconia ceramic blocks will contact the sorting guide plate 2. There are two sorting guide plates 2, and the two sorting guide plates 2 are symmetrically arranged obliquely, so that the zirconia ceramic blocks can move through the gap between the sorting guide plates 2, and then the sorting guide plate 2 is used to limit the moving position of the zirconia ceramic blocks. A linkage seat 3 is arranged above the support base 1. The machine vision component 31 is fixed at the bottom of the linkage seat 3. A camera for collecting images and an analysis module for detecting images are installed inside the machine vision component 31. When the zirconia ceramic blocks move to the position corresponding to the machine vision component 31, the linkage seat 3 will drive the machine vision component 31 to move vertically downward, reducing the distance between the machine vision component 31 and the zirconia ceramic blocks, so as to ensure that the machine vision component 31 can complete the collection and analysis work of the surface image information of the zirconia ceramic blocks. A positioning frame 4 is arranged between the linkage seat 3 and the support base 1. After the zirconia ceramic blocks are guided by the sorting guide plate 2, they will correspond to the position of the positioning frame 4. At this time, the active rod 41 fixed on one side of the positioning frame 4 will drive the positioning frame 4 to move vertically, so that the positioning frame 4 contacts the top of the conveying roller 11. When the conveying roller 11 conveys the zirconia ceramic blocks, the zirconia ceramic blocks will reach the inside of the positioning frame 4, and then the positioning frame 4 completes the positioning work of the zirconia ceramic blocks. When the linkage seat 3 drives the machine vision component 31 to move towards the zirconia ceramic blocks, the trigger block 32 at the bottom of the linkage seat 3 will be inserted into the inside of the positioning frame 4. A proximity switch is installed inside the positioning frame 4. When the trigger block 32 is inserted into the inside of the positioning frame 4, the proximity switch will sense the approach of the trigger block 32, that is, the machine vision component 31 has reached the appropriate position. At this time, the proximity switch will send a signal to the machine vision component 31, so that the machine vision component 31 is started to complete the collection and analysis work of the surface image of the zirconia ceramic blocks. After the defect detection of the surface of the zirconia ceramic blocks is completed, the positioning frame 4 will move vertically upward to cancel the limit on the zirconia ceramic blocks, so that the zirconia ceramic blocks can continue to move through the conveying roller 11 until they contact the diversion rod 5. At this time, the diversion rod 5 will guide the qualified or unqualified zirconia ceramic blocks to different positions for collection, so as to facilitate the subsequent processing work of the zirconia ceramic blocks.

[0018] On one side of the support frame 12, a guide block 121 is fixedly connected. At the top of the linkage seat 3, a driving block 33 is fixedly connected. The driving block 33 slides inside the guide block 121. The guide block 121 fixed on one side of the support frame 12 is used to guide the movement of the linkage seat 3. A driving block 33 is fixed at the top of the linkage seat 3, and the driving block 33 slides inside the guide block 121. And components such as a motor and a rack for driving the driving block 33 are installed inside the support frame 12 and the guide block 121, so that the driving block 33 can drive the linkage seat 3 to move, and then the linkage seat 3 can drive the machine vision component 31 to move to a suitable position.

[0019] On one side of the support base 1, a collection bin 13 is fixedly connected. On the other side of the support base 1, a concentration bin 14 is fixedly connected. The collection bin 13 fixed on one side of the support base 1 is used to collect the qualified zirconia ceramic blocks. After the detection work of the zirconia ceramic blocks is completed, when the conveying roller 11 continues to drive the zirconia ceramic blocks to move, if the zirconia ceramic blocks are qualified, the zirconia ceramic blocks will directly contact the guide rod 5. Since one side of the guide rod 5 in contact with the zirconia ceramic block is an inclined surface, the guide rod 5 will guide the zirconia ceramic blocks into the collection bin 13 for collection. If the zirconia ceramic blocks are unqualified, the guide rod 5 will first move horizontally, causing a change in the guiding direction of the zirconia ceramic blocks, so that the guide rod 5 can guide the zirconia ceramic blocks into the concentration bin 14, and then complete the collection work of the unqualified zirconia ceramic blocks through the concentration bin 14.

[0020] A positioning groove 42 is formed inside the positioning frame 4. On one side of the support base 1, a driving part 43 is fixedly connected. The driving rod 41 is slidably connected to one side of the driving part 43. The positioning groove 42 formed inside the positioning frame 4 is used to make way for the sliding of the trigger block 32. And a proximity switch is installed on the bottom inner wall of the positioning groove 42. After the trigger block 32 is inserted into the trigger block 32, the proximity switch will sense the approach of the trigger block 32, and then transmit a signal to the machine vision component 31, and the machine vision component 31 completes the acquisition of the surface information of the zirconia ceramic blocks. The driving part 43 fixed on one side of the support base 1 is used to drive the driving rod 41. Components such as a motor and a rack are installed inside the driving part 43, so that the driving rod 41 can drive the positioning frame 4 to move vertically and complete the positioning work of the zirconia ceramic blocks.

[0021] One side of the support base 1 is fixedly connected with a driving part two 51, and the diversion rod 5 is slidably connected to the top of the driving part two 51; the driving part two 51 fixed on one side of the support base 1 is used to drive the diversion rod 5. The inside of the diversion rod 5 is also equipped with components such as a motor and a rack, so that the diversion rod 5 can move horizontally at the top of the driving part two 51. Furthermore, the diversion rod 5 can change the guiding position of the zirconia ceramic block by changing its horizontal position, and then complete the work of guiding the qualified or unqualified zirconia ceramic blocks into the collection bin 13 and the centralized bin 14 respectively.

[0022] The working principle and usage process of the present utility model: When the staff needs to detect the surface defects of the zirconia ceramic block, the staff can place the zirconia ceramic block on the top of the conveying roller 11. At this time, the conveying roller 11 will rotate, so as to convey the zirconia ceramic block. When the zirconia ceramic block on the top of the conveying roller 11 moves, it will contact the sorting and guiding plate 2 and move under the guidance of the sorting and guiding plate 2. At this time, the driving rod 41 will drive the positioning frame 4 to move vertically, and the zirconia ceramic block guided by the sorting and guiding plate 2 will move to the inside of the positioning frame 4, and the positioning of the zirconia ceramic block is completed through the positioning frame 4. At this time, the linkage seat 3 will drive the machine vision component 31 and the trigger block 32 to move vertically downward. After the trigger block 32 moves a certain distance, it will insert into the alignment slot 42 and approach the proximity switch installed on the inner wall of the bottom end of the alignment slot 42, so that the proximity switch will sense the approach of the trigger block 32 and transmit the signal to the machine vision component 31. At this time, the machine vision component 31 will collect an image of the surface of the zirconia ceramic block and analyze the collected image information to judge whether there are defects on the surface of the zirconia ceramic block. After the judgment is completed, the positioning frame 4 will move vertically to cancel the limit of the zirconia ceramic block by the positioning frame 4, and the zirconia ceramic block will continue to move under the drive of the conveying roller 11. If the zirconia ceramic block is detected as qualified, the zirconia ceramic block will directly contact the diversion rod 5 and move into the collection bin 13 under the guidance of the diversion rod 5. If the zirconia ceramic block is detected as unqualified, the diversion rod 5 will first move horizontally to change the guiding position of the diversion rod 5 for the zirconia ceramic block, so that the unqualified zirconia ceramic block will be guided by the diversion rod 5 into the centralized bin 14 for collection, which is convenient for the staff to carry out the subsequent centralized treatment work of the zirconia ceramic block.

Claims

1. A defect detection device for the surface of a dental restoration product, comprising a support base (1), a plurality of conveying rollers (11) and a machine vision component (31), characterized in that: A plurality of conveying rollers (11) are rotatably connected to the inner side of the support base (1); a support frame (12) is fixedly connected to the top of the support base (1); two sorting guide plates (2) are fixedly connected to the top of the support base (1); a linkage seat (3) is provided above the support base (1); the machine vision component (31) is fixedly connected to the bottom of the linkage seat (3); a plurality of trigger blocks (32) are fixedly connected to the bottom of the linkage seat (3); a positioning frame (4) is provided between the linkage seat (3) and the support base (1); the trigger block (32) slides inside the positioning frame (4); an active rod (41) is fixedly connected to one side of the positioning frame (4); and a guide rod (5) slides above the support base (1).

2. A defect detection device for the surface of a dental restoration product according to claim 1, characterized in that: A guide block (121) is fixedly connected to one side of the support frame (12), a driving block (33) is fixedly connected to the top of the linkage seat (3), and the driving block (33) slides inside the guide block (121).

3. A defect detection device for the surface of a dental restoration product according to claim 1, characterized in that: A collection bin (13) is fixedly connected to one side of the support base (1), and a concentration bin (14) is fixedly connected to the other side of the support base (1).

4. A defect detection device for the surface of a dental restoration product according to claim 1, characterized in that: An alignment groove (42) is provided inside the positioning frame (4), a driving part (43) is fixedly connected to one side of the support base (1), and the active rod (41) is slidably connected to one side of the driving part (43).

5. A defect detection device for the surface of a dental restoration product according to claim 1, characterized in that: The support base (1) is fixedly connected to one side with a second driving part (51), and the guide rod (5) is slidably connected to the top of the second driving part (51).

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