CN217277921U - Article surface defect detection device based on machine vision - Google Patents
Article surface defect detection device based on machine vision Download PDFInfo
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- CN217277921U CN217277921U CN202123331034.3U CN202123331034U CN217277921U CN 217277921 U CN217277921 U CN 217277921U CN 202123331034 U CN202123331034 U CN 202123331034U CN 217277921 U CN217277921 U CN 217277921U
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Abstract
The utility model relates to a product appearance defect check out test set makes technical field, specific article surface defect detection device based on machine vision that can accomplish the continuous automatic feeding of the product that awaits measuring, article surface image gather and can will mark the detection back article after marking according to the testing result according to the continuous automatic pile of order, material loading transport mechanism adopts linear guide or ball screw mechanism, testing platform fixes on linear guide or ball screw mechanism's nut seat, image acquisition mechanism erects in material loading transport mechanism's top, the rear end that the mechanism is located material loading transport mechanism is collected to the product order after the detection.
Description
The technical field is as follows:
the utility model relates to a product appearance defect check out test set makes technical field, specific can accomplish the continuous automatic feeding of product that awaits measuring, article surface image acquisition and can will be based on machine vision's article surface defect detection device according to the continuous automatic pile of order with article after the detection after demarcating according to the testing result that says so.
The background art comprises the following steps:
the generation of surface defects is often unavoidable during the manufacture of the product. The surface defects of different products have different definitions and types, and generally the surface defects are local areas with non-uniform physical or chemical properties on the surface of the product, such as scratches, spots, holes on the metal surface, color differences and indentations on the paper surface, inclusions, breakage, stains on the non-metal surface of glass and the like. The surface defects not only affect the beauty and comfort of the product, but also generally bring adverse effects to the service performance of the product, so that great manpower and material resources are consumed to carry out quality control related to the surface defects in the production process.
At present, the quality inspection of most industrial parts in the market still adopts a manual mode to carry out the traditional detection of surface defects, the method has the advantages of low sampling rate, low accuracy, poor real-time performance, low efficiency, high labor intensity and great influence by manual experience and subjective factors, and the detection method based on machine vision can overcome the defects to a great extent. However, the existing equipment or device often has the problems of single function, low automation degree of the whole machine design and low defect detection efficiency, and particularly, the existing equipment cannot realize continuous feeding and image acquisition of a plurality of products to be detected and sequential collection of the detected products calibrated according to detection results.
The invention content is as follows:
the utility model discloses shortcoming and not enough to exist among the prior art, provided one kind can accomplish the continuous automatic feeding of product that awaits measuring, article surface image gathers and can will be based on machine vision's article surface defect detection device according to the continuous automatic pile of order with article after the detection after demarcating according to the testing result.
The utility model discloses a following measure reaches:
the utility model provides an article surface defect detection device based on machine vision, is equipped with material loading transport mechanism, testing platform, image acquisition mechanism and detects back product order and collects the mechanism, its characterized in that, material loading transport mechanism adopts linear guide or ball screw mechanism, testing platform fixes on linear guide or ball screw mechanism's nut seat, image acquisition mechanism erects in material loading transport mechanism's top, it is located material loading transport mechanism's rear end to detect back product order collection mechanism.
The utility model discloses a be equipped with the second transport mechanism that is used for sending out the material after the mark in proper order in the product order collection mechanism after detecting, second transport mechanism adopts belt transport mechanism to realize, in order to guarantee that the product is placed on drive belt and not skidded, the surface of conveying belt is equipped with the dog, and when belt transport mechanism operates, the dog moves along with drive belt and promotes the product to be sent out; furthermore, a second conveying mechanism is adjacent to the rear end of the feeding conveying mechanism, the second conveying mechanism and the feeding conveying mechanism are combined to be in an L shape, a transfer mechanism is further arranged at the joint of the second conveying mechanism and the feeding conveying mechanism, a material fork lifting mechanism, a material fork base and a linear sliding table are arranged in the transfer mechanism, the material fork lifting mechanism is fixed below the material fork, the lower end of the material fork lifting mechanism is fixedly connected with the material fork base, the material fork base is fixedly connected with a nut seat of the linear sliding table, a side vertical plate is further arranged on the material fork base, the side vertical plate corresponds to the lowest point of movement of the material fork and is respectively provided with a position sensor, the linear sliding table in the transfer mechanism is arranged in parallel with the second conveying mechanism, and the material fork picks up materials from the tail end of the feeding conveying mechanism and conveys the materials to the second conveying mechanism.
The utility model discloses product order collection mechanism still is equipped with the case and gathers materials case elevating system after the detection, the box side of case that gathers materials is equipped with the material receiving mouth, is equipped with the layered type storage space that is used for with the dull and stereotyped material one-to-one that waits to collect in the box, gathers materials case box and gathers materials case elevating system upper end through gathering materials case spacing frame and be connected, gathers materials case and gathers materials the mouth and sets up towards the end of second transport mechanism for collect the product that second transport mechanism sent out in proper order; the material collecting port of the material collecting box is also provided with a feeding mechanism used for pushing the flat plate type material into the material collecting port of the material collecting box, the feeding mechanism comprises a pushing fork and a pushing fork driving mechanism used for driving the pushing fork to do linear motion in the horizontal direction, and the pushing fork driving mechanism is realized by matching a motor with a connecting rod or by adopting an air cylinder.
The image acquisition mechanism of the utility model comprises a support frame, a tripod head mechanism, a light source and a camera, wherein the light source and the camera are respectively connected on the tripod head mechanism, the tripod head mechanism is arranged above a feeding conveying mechanism through the support frame, the tripod head mechanism comprises a horizontal rotating mechanism, a light source mounting bracket and a camera mounting bracket which are arranged below the horizontal rotating mechanism, a bearing base fixed at the top of the support frame is arranged in the horizontal rotating mechanism, a crossed roller bearing is arranged on the bearing base, the outer ring of the crossed roller bearing is connected with the support frame, the inner ring is connected with an electric rotator, the electric rotator is connected with a connecting plate below the horizontal rotating mechanism, the light source mounting bracket is sequentially provided with a light source X-axis sliding table, a light source Z-axis sliding table and a light source mounting bracket from top to bottom, wherein the light source X-axis sliding table is connected with the lower part of the connecting plate, the upper end of the light source Z-axis sliding table is connected with a slider in the light source X-axis sliding table, the light source mounting frame is fixedly connected with a sliding block in the light source Z-axis sliding table; camera carry support top-down is equipped with camera X axle slip table, camera Z axle slip table and camera fixed plate in proper order, camera X axle slip table is connected with the connecting plate below, camera Z axle slip table and the slider fixed connection of camera X axle slip table, and the camera fixed plate links to each other with the slider of camera Z axle slip table.
The box body of the material collecting box is a cuboid, one side surface provided with the material receiving port is open, a side wall opposite to the material receiving port is provided with a baffle strip or a baffle plate, the material is prevented from being pushed out when the pushing fork pushes the material, a plurality of bearing bosses are symmetrically arranged on the two side walls, so that two ends of the flat plate type material are respectively supported by the bearing bosses, and the adjacent flat plate type materials are stacked at intervals to prevent collision and scratching; furthermore, the material collecting box lifting mechanism comprises a side vertical plate, a linear sliding table or a ball screw and a lifting motor, wherein the lifting motor and the linear sliding table or the ball screw are fixed on the side vertical plate, the material collecting box limiting frame is fixedly connected with a sliding block in the linear sliding table or a nut seat in the ball screw, and the lifting motor drives the linear sliding table or the ball screw to drive the material collecting box limiting frame to reciprocate in the vertical direction.
The material fork and the material fork actuating mechanism that are used for putting flat product fork on testing platform still are equipped with to material conveying mechanism front end.
The utility model discloses at work, will detect article fork and put on testing platform through the material fork of material loading transport mechanism front end, drive testing platform stable and accurate removal to the light source and camera below by material loading transport mechanism, because light source and camera are respectively through the support to be carried on horizontal rotary mechanism, through horizontal rotary mechanism and carry the support, can realize the accurate adjustment of parameters such as light source and camera interval, light source projection angle, light source vertical position, light source horizontal position, the horizontal position of camera, camera vertical position, camera angle of pitch, guarantee that the camera can catch the complete topography characteristic of product surface that detects, after image acquisition finishes, material loading transport mechanism drives to detect the product and conveys to the second transport mechanism front end, through the transfer mechanism of second transport mechanism and material loading transport mechanism junction, will detect the product fork and put on the second transport mechanism, through the conveyer among the second transport mechanism, to wait to detect the product and deliver to and beat the mark process, mark the testing result on the product, this process is realized through marking machine, this is not repeated, the product after the mark is beaten in the completion is seen off by second transport mechanism is terminal, and collect the mechanism and take in proper order by detecting back product order and gather the workbin, owing to adopt layered form collecting space in the workbin, can realize that a plurality of back products of examining are independently deposited, effectively avoid receiving colliding with or the fish tail problem of receipts material in-process.
Compared with the prior art, the utility model, through reasonable arranging, will be integrated as an organic whole based on machine vision detection flow, have compact structure, account for the advantage that the space is little, work efficiency height is showing.
Description of the drawings:
fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic structural diagram of the feeding and conveying mechanism and the second conveying mechanism of the present invention.
Fig. 3 is a schematic structural diagram of the middle holder mechanism of the present invention.
Fig. 4 is a schematic structural diagram of the material collecting box of the present invention.
Reference numerals: the device comprises a feeding conveying mechanism 1, a detection platform 2, a second conveying mechanism 3, a transfer mechanism 4, a material collecting box 5, a material collecting box limiting frame 6, a flat-plate-shaped material 7, a stop block 8, a transfer material fork 9, a stop block sensor 10, a push fork 11, a push fork driving mechanism 12, a material collecting box lifting mechanism 13, a side vertical plate 14, a bearing boss 15, a support frame 16, a light source 17, a camera 18 and a horizontal rotating mechanism 19.
The specific implementation mode is as follows:
the present invention will be further described with reference to the accompanying drawings and examples.
Example 1:
as shown in fig. 1 and fig. 2, the present embodiment provides a device for continuously detecting surface defects of flat plate-shaped products, which is provided with a feeding and conveying mechanism 1, a detection platform 2, an image acquisition mechanism and a detected product sequence collecting mechanism, wherein the feeding and conveying mechanism 1 adopts a linear guide rail or a ball screw mechanism, and the front end of the feeding and conveying mechanism 1 is further provided with a material fork and a material fork driving mechanism, which are used for forking the flat plate-shaped products on the detection platform 2; the detection platform 2 is fixed on a linear guide rail or a nut seat of the ball screw mechanism, the image acquisition mechanism is erected above the feeding conveying mechanism 1, and the detected product sequence collection mechanism is positioned at the rear end of the feeding conveying mechanism 1;
as shown in fig. 2, a second conveying mechanism 3 for sequentially sending out the marked materials is arranged in the detected product sequence collecting mechanism, the second conveying mechanism 3 is realized by adopting a belt conveying mechanism, in order to ensure that the products are placed on a transmission belt and do not slip, a stop block 8 is arranged on the surface of the transmission belt, when the belt conveying mechanism operates, the stop block 8 operates along with the transmission belt and pushes the products to be sent out, in order to adapt to the conveying of the flat-plate-shaped materials 7, the second conveying mechanism 3 is provided with two parallel transmission belts which operate synchronously and are both provided with the stop block 8, in order to ensure that the flat-plate-shaped materials 7 to be conveyed can be accurately pushed by the stop block 8 when the equipment operates, one end of the second conveying mechanism 3 close to the feeding conveying mechanism 1 is also provided with a stop block sensor 10 for detecting the in-position condition of the stop block 8, the stop block sensor 10 adopts a reflective infrared sensor, related electrical circuits are prior art and are not described herein;
as shown in fig. 2, the second conveying mechanism 3 is adjacent to the rear end of the feeding conveying mechanism 1, the second conveying mechanism 3 and the feeding conveying mechanism 1 are combined into an L shape, a transfer mechanism 4 is further arranged at the joint of the second conveying mechanism 3 and the feeding conveying mechanism 1, the transfer mechanism 4 is internally provided with a transfer fork 9, a fork lifting mechanism, a fork base and a linear sliding table, the material fork lifting mechanism is fixed below the material fork, the lower end of the material fork lifting mechanism is fixedly connected with the material fork base, the material fork base is fixedly connected with the nut seat of the linear sliding table, the material fork base is also provided with a side vertical plate, the side vertical plate is respectively provided with a position sensor corresponding to the lowest point and the highest point of the movement of the material fork, a linear sliding table in the transfer mechanism is arranged in parallel with the second conveying mechanism 3, and the material fork forks the material from the tail end of the feeding conveying mechanism 1 and conveys the material to the second conveying mechanism 3;
as shown in fig. 4, in this example, the product sequential collection mechanism after detection is further provided with a collection box 5 and a collection box lifting mechanism 13, a collection port is arranged on a side surface of a box body of the collection box 5, layered storage spaces for one-to-one correspondence to flat plate materials to be collected are arranged in the box body, the box body of the collection box 5 is connected with the upper end of the collection box lifting mechanism 13 through a collection box limiting frame 6, and the collection port of the collection box is arranged towards the tail end of the second conveying mechanism 3 and is used for sequentially collecting products sent out by the second conveying mechanism 3; the material collecting port of the material collecting box 5 is also provided with a feeding mechanism for pushing the flat plate type material into the material collecting port of the material collecting box, the feeding mechanism comprises a push fork 11 and a push fork driving mechanism 12 for driving the push fork to linearly move in the horizontal direction, and the push fork driving mechanism 12 is realized by matching a motor with a connecting rod or adopting an air cylinder;
the material collecting box lifting mechanism 13 comprises a side vertical plate 14, a linear sliding table or a ball screw and a lifting motor, wherein the lifting motor and the linear sliding table or the ball screw are fixed on the side vertical plate 14, the material collecting box limiting frame 6 is fixedly connected with a sliding block in the linear sliding table or a nut seat in the ball screw, and the lifting motor drives the linear sliding table or the ball screw to drive the material collecting box limiting frame 6 to reciprocate in the vertical direction;
the box body of the material collecting box 5 is a cuboid, one side surface provided with the material receiving port is open, a blocking strip or a baffle is arranged on one side wall opposite to the material receiving port, the pushing of the material is prevented when the pushing fork pushes the material, a plurality of bearing bosses 15 are symmetrically arranged on the two side walls, so that two ends of the flat plate type material are respectively supported by the bearing bosses 15, and the adjacent flat plate type materials are stacked at intervals to prevent collision and scratching; when the automatic material collecting device works, a material collecting port of a material collecting box 5 is arranged opposite to the tail end of a production line, the position of a vacant layered containing space in the material collecting box is adjusted to be consistent with the pushing height of a pushing fork 11 through a material collecting box lifting mechanism 13, then a flat plate type material at the tail end of the production line is pushed into a corresponding layered containing space in the material collecting box along the material collecting port through the pushing fork in a feeding mechanism, after the material is successfully collected, the material collecting box lifting mechanism is repeatedly adjusted to enable the position of the next vacant layered containing space to be adjusted to be consistent with the pushing height of the pushing fork, after the material collecting is repeated for a plurality of times, all layered containing spaces of the material collecting box are used for containing the material, and the current material collecting box 5 is fully collected;
in this example, the image collecting mechanism includes a support frame 16, a pan-tilt mechanism, a light source 17 and a camera 18, wherein the light source 17 and the camera 18 are respectively connected to the pan-tilt mechanism, the pan-tilt mechanism is arranged above the feeding conveying mechanism 1 through the support frame 16, the pan-tilt mechanism includes a horizontal rotating mechanism 19, and a light source mounting bracket and a camera mounting bracket which are arranged below the horizontal rotating mechanism 19, a bearing base fixed on the top of the support frame is arranged in the horizontal rotating mechanism 19, a crossed roller bearing is arranged on the bearing base, the outer ring of the crossed roller bearing is connected with the support frame, the inner ring is connected with an electric rotator, the electric rotator is connected with a connecting plate below the horizontal rotating mechanism, the light source mounting bracket is sequentially provided with a light source X-axis sliding table, a light source Z-axis sliding table and a light source mounting bracket from top to bottom, wherein the light source X-axis sliding table is connected with the lower part of the connecting plate, the upper end of the light source Z-axis sliding table is connected with a sliding block in the light source X-axis sliding table, and the light source mounting frame is fixedly connected with the sliding block in the light source Z-axis sliding table; the camera mounting bracket is sequentially provided with a camera X-axis sliding table, a camera Z-axis sliding table and a camera fixing plate from top to bottom, the camera X-axis sliding table is connected with the lower part of the connecting plate, the camera Z-axis sliding table is fixedly connected with a sliding block of the camera X-axis sliding table, and the camera fixing plate is connected with a sliding block of the camera Z-axis sliding table;
when the system works, an article to be detected is forked on a detection platform through a material fork at the front end of a material loading conveying mechanism, the detection platform is driven by the material loading conveying mechanism to stably and accurately move to the position below a light source and a camera, the light source and the camera are respectively hung on a horizontal rotating mechanism through a bracket, parameters such as the distance between the light source and the camera, the projection angle of the light source, the vertical position of the light source, the horizontal position of the camera, the vertical position of the camera, the pitch angle of the camera and the like can be accurately adjusted through the horizontal rotating mechanism and the hanging bracket, the complete surface appearance characteristics of the product to be detected can be captured by the camera, after image acquisition is finished, the material loading conveying mechanism drives the product to be detected to be conveyed to the front end of a second conveying mechanism, and the product to be detected is forked on the second conveying mechanism through a transfer mechanism at the adjacent position of the second conveying mechanism and the material loading conveying mechanism, through the conveyer among the second transport mechanism, will wait to detect the product and deliver to and beat the mark process, mark the testing result on the product, this process is realized through marking machine, this is not repeated, the product after accomplishing to beat the mark is seen off by second transport mechanism is terminal to collect the mechanism by detecting back product order and take in the case that gathers materials in proper order, owing to adopt layered type collecting space in the case that gathers materials, can realize that a plurality of back products of examining are independently deposited, effectively avoid receiving clashing with or the fish tail problem of receipts material in-process.
Compared with the prior art, the utility model, through reasonable arranging, will be integrated as an organic whole based on machine vision detection flow, have compact structure, account for the advantage that the space is little, work efficiency height is showing.
Claims (7)
1. The utility model provides an article surface defect detection device based on machine vision, is equipped with material loading transport mechanism, testing platform, image acquisition mechanism and detects back product order and collects the mechanism, its characterized in that, material loading transport mechanism adopts linear guide or ball screw mechanism, testing platform fixes on linear guide or ball screw mechanism's nut seat, image acquisition mechanism erects in material loading transport mechanism's top, the mechanism is located material loading transport mechanism's rear end is collected to product order after the detection.
2. The article surface defect detecting device based on machine vision as claimed in claim 1, wherein a second conveying mechanism for sequentially sending out the marked materials is arranged in the detected product sequence collecting mechanism, the second conveying mechanism is realized by a belt conveying mechanism, in order to ensure that the products are placed on the transmission belt without slipping, a stop block is arranged on the surface of the conveying belt, and when the belt conveying mechanism runs, the stop block runs along with the transmission belt and pushes the products to be sent out.
3. The article surface defect detecting device based on machine vision as claimed in claim 2, wherein the second conveying mechanism is adjacent to the rear end of the feeding conveying mechanism, the second conveying mechanism and the feeding conveying mechanism are combined into an L shape, a transfer mechanism is further provided at the position where the second conveying mechanism and the feeding conveying mechanism are adjacent, a fork lifting mechanism, a fork base and a linear sliding table are provided in the transfer mechanism, the fork lifting mechanism is fixed below the fork, the lower end of the fork lifting mechanism is fixedly connected with the fork base, the fork base is fixedly connected with a nut seat of the linear sliding table, a side vertical plate is further provided on the fork base, the side vertical plate is respectively provided with a position sensor corresponding to the lowest point and the highest point of movement of the fork, the linear sliding table in the transfer mechanism is arranged in parallel with the second conveying mechanism, the fork picks up the material from the tail end of the feeding conveying mechanism, and the material is sent to a second conveying mechanism.
4. The article surface defect detection device based on the machine vision is characterized in that the product sequential collection mechanism after detection is further provided with a collection box and a collection box lifting mechanism, a collection port is arranged on the side face of the collection box, layered storage spaces which correspond to the flat plate materials to be collected one by one are arranged in the collection box, the collection box body is connected with the upper end of the collection box lifting mechanism through a collection box limiting frame, and the collection port of the collection box is arranged towards the tail end of the second conveying mechanism and used for sequentially collecting the products sent out by the second conveying mechanism; the material collecting port of the material collecting box is also provided with a feeding mechanism used for pushing the flat plate type material into the material collecting port of the material collecting box, the feeding mechanism comprises a pushing fork and a pushing fork driving mechanism used for driving the pushing fork to do linear motion in the horizontal direction, and the pushing fork driving mechanism is realized by matching a motor with a connecting rod or by adopting an air cylinder.
5. The device for detecting surface defects of objects based on machine vision according to claim 1, wherein the image capturing mechanism comprises a supporting frame, a pan-tilt mechanism, a light source and a camera, wherein the light source and the camera are respectively connected to the pan-tilt mechanism, the pan-tilt mechanism is arranged above the feeding conveying mechanism through the supporting frame, the pan-tilt mechanism comprises a horizontal rotating mechanism, and a light source mounting bracket and a camera mounting bracket which are arranged below the horizontal rotating mechanism, the horizontal rotating mechanism is provided with a bearing base fixed at the top of the supporting frame, the bearing base is provided with a crossed roller bearing, the outer ring of the crossed roller bearing is connected with the supporting frame, the inner ring of the crossed roller bearing is connected with an electric rotator, the electric rotator is connected with a connecting plate below the horizontal rotating mechanism, the light source mounting bracket is provided with a light source X-axis sliding table, a camera, a light source and a camera from top to bottom in sequence, The light source X-axis sliding table is connected with the lower part of the connecting plate, the upper end of the light source Z-axis sliding table is connected with a sliding block in the light source X-axis sliding table, and the light source mounting frame is fixedly connected with the sliding block in the light source Z-axis sliding table; camera carry support top-down is equipped with camera X axle slip table, camera Z axle slip table and camera fixed plate in proper order, camera X axle slip table is connected with the connecting plate below, camera Z axle slip table and the slider fixed connection of camera X axle slip table, and the camera fixed plate links to each other with the slider of camera Z axle slip table.
6. The device for detecting the surface defects of the article based on the machine vision as claimed in claim 4, wherein the box body of the material collecting box is a cuboid, one side surface provided with the material receiving port is open, a baffle strip or a baffle plate is arranged on one side wall opposite to the material receiving port to prevent the pushing fork from pushing the material out when pushing the material, a plurality of bearing bosses are symmetrically arranged on two side walls, so that two ends of the flat plate type material are respectively supported by the bearing bosses, and adjacent flat plate type materials are stacked at intervals to prevent collision and scratching.
7. The article surface defect detection device based on machine vision as claimed in claim 6, characterized in that the collection box lifting mechanism comprises a side vertical plate, a linear sliding table or a ball screw, and a lifting motor, wherein the lifting motor and the linear sliding table or the ball screw are fixed on the side vertical plate, the collection box limit frame is fixedly connected with a sliding block in the linear sliding table or a nut seat in the ball screw, and the lifting motor drives the linear sliding table or the ball screw to drive the collection box limit frame to reciprocate in the vertical direction.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202123331034.3U CN217277921U (en) | 2021-12-27 | 2021-12-27 | Article surface defect detection device based on machine vision |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202123331034.3U CN217277921U (en) | 2021-12-27 | 2021-12-27 | Article surface defect detection device based on machine vision |
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| CN217277921U true CN217277921U (en) | 2022-08-23 |
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| CN202123331034.3U Active CN217277921U (en) | 2021-12-27 | 2021-12-27 | Article surface defect detection device based on machine vision |
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2021
- 2021-12-27 CN CN202123331034.3U patent/CN217277921U/en active Active
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