Workpiece defect detection system based on machine vision information acquisition

Abstract

The invention discloses a workpiece defect detection system based on machine vision information collection, and relates to the technical field of visual defect detection.The workpiece defect detection system comprises a lower frame, an upper frame is fixed to the upper end face of the lower frame, and a plurality of illuminating lamps are fixed in the lower frame; the number of the lifting devices is two, and the lifting devices are symmetrically fixed to the upper frame. The camera I is fixed at the output end of the lifting equipment; the two feeding assemblies are symmetrically arranged on the lower frame and correspond to the lifting devices in a one-to-one mode. The two feeding cylinder bodies are symmetrically fixed to the upper end face of the lower frame, and the output ends of the feeding cylinder bodies are connected with the feeding assembly. The multiple workpieces can be continuously detected through the two feeding assemblies, the workpieces can be located at the center position of the containing plate through the multiple positioning cylinder bodies during detection, and visual detection of the first camera and the lower detection assembly is facilitated.

Description

Technical Field

[0001] The present invention relates to the technical field of visual defect detection, and in particular to a workpiece defect detection system based on machine vision information collection. Background Art

[0002] The workpiece defect detection system based on machine vision information acquisition is an automated inspection system based on computer vision technology. It uses a camera lens to capture images or videos of workpieces, and analyzes and identifies them through image processing, pattern recognition, deep learning and other methods, thereby achieving accurate detection of workpiece defects.

[0003] The existing workpiece defect detection system based on machine vision information acquisition has great limitations. It cannot detect multiple surfaces of a workpiece at the same time, which requires the workpiece to be flipped, affecting the detection efficiency. In addition, the visual acquisition camera is easily affected by external light sources during detection, resulting in inaccurate detection results.

[0004] In view of the above problems, the present invention provides a workpiece defect detection system based on machine vision information acquisition to solve the above problems. Summary of the invention

[0005] To achieve the above object, the present invention provides the following technical solution: a workpiece defect detection system based on machine vision information acquisition, comprising: A lower frame, an upper frame being fixed to an upper end surface thereof, and a plurality of lighting lamps being fixed inside the lower frame; The lifting device is configured as two and symmetrically fixed on the upper frame; Camera 1, fixed at the output end of the lifting device; The feeding assembly is configured as two, symmetrically arranged on the lower frame and corresponding to the lifting device one by one; The feeding cylinder is configured as two and is symmetrically fixed on the upper end surface of the lower frame, and its output end is connected to the feeding assembly; Among them, the loading assembly includes guide rails and positioning pieces, both of which are fixed on the lower frame, and the guide rails are configured as two, and a pushing block is fixed on the side of the two guide rails that are away from each other, and a guiding inclined surface is provided on the pushing block, and a sliding plate is slidably arranged on the guide rail, and the sliding plate is limited by the positioning piece, and a placement plate is slidably arranged in the middle position of the sliding plate, and a plurality of positioning cylinders are symmetrically fixed on the upper end surface of the sliding plate, and an adjusting assembly is fixed in the lower frame, and when the placement plate is in contact with the positioning piece, the adjusting assembly is located directly below the placement plate.

[0006] Further, preferably, four limit columns are slidably arranged in the sliding plate, and a connecting block is fixed on every two of the limit columns, a tension spring is arranged between the connecting block and the sliding plate, and four positioning blocks are also slidably arranged in the sliding plate, and a pressing spring is arranged between the positioning block and the sliding plate.

[0007] Further, preferably, a guide surface is provided on the connecting block, the guide surface corresponds to the guide inclined surface of the pushing block, and an arc surface is provided on the positioning block.

[0008] Further, preferably, the placement plate is made of a transparent material, a limiting groove is provided on the placement plate at a position corresponding to the limiting column, a positioning groove is provided on the placement plate at a position corresponding to the positioning block, two pulling blocks are symmetrically fixed on the lower end surface of the placement plate, a pulling groove is provided on the pulling block, and the pulling groove is a T-shaped groove.

[0009] Further, preferably, the adjustment component comprises: An adjusting disk, fixed in the lower frame; An adjusting chamber is configured in a ring shape and is coaxially opened in the adjusting disk; The guide grooves are configured as two annular structures, are coaxially opened in the adjustment disk, and are equidistantly arranged on both sides of the adjustment chamber; A fixed gear coaxially fixed in the adjustment chamber; A lower detection assembly is fixed at the axis center position of the adjustment disk; A side detection assembly is configured as a plurality of assemblies, each of which is slidably disposed in the adjustment bin and the guide groove; The pulling cylinders are configured into two and are symmetrically fixed in the adjusting disk. A connecting piece is fixed on the output end of the pulling cylinders, and the connecting piece is slidably connected with the pulling groove.

[0010] Further, preferably, the lower detection assembly and the side detection assembly both include: A guide plate connected with a detection cylinder; A detection plate, slidably disposed on the guide plate and driven by a detection cylinder fixed on the guide plate; Camera 2 is fixed on the detection board.

[0011] Further, preferably, the side detection component also includes: The guide rollers are configured in four numbers, all of which are rotatably arranged on the lower end surface of the guide plate and correspond to the two guide grooves; A motor compartment is fixed on the lower end surface of the guide plate, and an adjusting motor is fixed inside the motor compartment; The adjusting gear is fixed at the output end of the adjusting motor and meshes with the fixed gear.

[0012] Compared with the prior art, the present invention provides a workpiece defect detection system based on machine vision information collection, which has the following beneficial effects: In the present invention, multiple workpieces can be continuously inspected through two loading assemblies, and during inspection, the workpiece can be placed in the center of the placement plate through multiple positioning cylinders, which is convenient for visual inspection by camera one and the lower detection assembly. The workpiece can also be adjusted to the lower frame for inspection through the adjustment assembly to avoid the influence of external light sources on camera one and camera two. Moreover, the surfaces of multiple different workpieces can be synchronously inspected through camera one, the lower detection assembly and the side detection assembly, thereby greatly improving the inspection efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of a workpiece defect detection system based on machine vision information acquisition; Figure 2 It is a schematic diagram of the structure of a feeding component of a workpiece defect detection system based on machine vision information acquisition; Figure 3 It is a schematic diagram of the deployment of a placement plate and a sliding plate of a workpiece defect detection system based on machine vision information acquisition; Figure 4 It is a schematic diagram of the structure of an adjustment component of a workpiece defect detection system based on machine vision information acquisition; Figure 5 Schematic diagram of the side detection component structure of a workpiece defect detection system based on machine vision information acquisition In the figure: 1, lower frame; 2, upper frame; 3, lifting device; 4, camera 1; 5, feeding assembly; 6, feeding cylinder; 51, guide rail; 52, positioning piece; 53, pushing block; 54, sliding plate; 55, placing plate; 56, positioning cylinder; 57, adjusting assembly; 541, limiting column; 542, connecting block; 543, positioning block; 551, limiting groove; 552, positioning groove; 553, pulling block; 5 54. Pulling groove; 571. Adjusting plate; 572. Adjusting bin; 573. Guide groove; 574. Fixed gear; 575. Lower detection assembly; 576. Side detection assembly; 577. Pulling cylinder; 578. Connecting piece; 5761. Guide plate; 5762. Detection plate; 5763. Detection cylinder; 5764. Camera 2; 5765. Guide roller; 5766. Motor bin; 5767. Adjusting gear. DETAILED DESCRIPTION

[0014] Reference Figure 1-Figure 5 The present invention provides a technical solution: a workpiece defect detection system based on machine vision information acquisition, comprising: A lower frame 1, an upper frame 2 is fixed on its upper end surface, and a plurality of lighting lamps are fixed inside the lower frame 1; The lifting device 3 is configured as two and symmetrically fixed on the upper frame 2; A camera 4 is fixed at the output end of the lifting device 3; The loading assembly 5 is configured as two, symmetrically arranged on the lower frame 1, and corresponding to the lifting device 3 one by one; The feeding cylinder 6 is configured as two and symmetrically fixed on the upper end surface of the lower frame 1, and its output end is connected to the feeding assembly 5; Among them, the loading assembly 5 includes a guide rail 51 and a positioning member 52, both of which are fixed on the lower frame 1, and the guide rail 51 is configured as two, and a pushing block 53 is fixed on the side of the two guide rails 51 away from each other, and a guiding inclined surface is provided on the pushing block 53, and a sliding plate 54 is slidably arranged on the guide rail 51, and the sliding plate 54 is limited by the positioning member 52, and a placement plate 55 is slidably arranged in the middle position of the sliding plate 54, and a plurality of positioning cylinders 56 are symmetrically fixed on the upper end surface of the sliding plate 54, and an adjusting assembly 57 is fixed in the lower frame 1, and when the placement plate 55 contacts the positioning member 52, the adjusting assembly 57 is located directly below the placement plate 55.

[0015] Specifically, during inspection, the loading and unloading can be performed by a robotic arm first, so that the two loading components 5 can be inspected alternately to improve the inspection efficiency, and when the workpiece is placed on the placement plate 55, the workpiece can be located at the center of the placement plate 55 through multiple positioning cylinders 56, which is convenient for inspection. After placement, the sliding plate 54 is slid toward the positioning member 52 through the loading cylinder 6, so that the workpiece is located below the camera 4, and then the placement plate 55 and the workpiece are sent into the lower frame 1 together through the adjustment component 57, and the inspection brightness is provided by the lighting lamp, thereby improving the stability of the inspection.

[0016] In this embodiment, four limiting columns 541 are slidably arranged in the sliding plate 54, and a connecting block 542 is fixed on every two of the limiting columns 541, and a tension spring is arranged between the connecting block 542 and the sliding plate 54. Four positioning blocks 543 are also slidably arranged in the sliding plate 54, and a pressing spring is arranged between the positioning block 543 and the sliding plate 54.

[0017] As a preferred embodiment, a guide surface is provided on the connecting block 542 , and the guide surface corresponds to the guide inclined surface of the pushing block 53 , and an arc surface is provided on the positioning block 543 .

[0018] As a preferred embodiment, the placement plate 55 is made of transparent material, and a limiting groove 551 is provided on the placement plate 55 at a position corresponding to the limiting column 541, and a positioning groove 552 is provided on the placement plate 55 at a position corresponding to the positioning block 543, and two pulling blocks 553 are symmetrically fixed on the lower end surface of the placement plate 55, and a pulling groove 554 is provided on the pulling block 553, and the pulling groove 554 is a T-shaped groove.

[0019] That is to say, when the workpiece is located below the camera 4, the pushing block 53 is inserted into the connecting block 542 and the sliding plate 54 directly through the guiding slope, so that the connecting block 542 drives the limiting column 541 to slide, so that the limiting groove 551 of the placing plate 55 is out of the limiting state, and at this time the pulling block 553 is connected to the adjusting component 57, so that the adjusting component 57 drives the placing plate 55 to be out of the sliding plate 54, thereby avoiding the influence of external light sources on the detection.

[0020] As a preferred embodiment, the adjustment component 57 includes: An adjusting disk 571 is fixed in the lower frame 1; The regulating chamber 572 is configured in an annular shape and is coaxially opened in the regulating disk 571; The guide grooves 573 are configured as two annular structures, are coaxially opened in the adjustment disk 571, and are equidistantly arranged on both sides of the adjustment chamber 572; A fixed gear 574, coaxially fixed in the adjustment chamber 572; The lower detection assembly 575 is fixed at the axis position of the adjustment disk 571; The side detection assembly 576 is configured as a plurality of components, each of which is slidably disposed in the adjustment bin 572 and the guide groove 575; The pulling cylinders 577 are configured as two and are symmetrically fixed in the adjusting disk 571 . A connecting piece 578 is fixed to the output end of the pulling cylinders 577 , and the connecting piece 578 is slidably connected to the pulling groove 554 .

[0021] Among them, when the loading cylinder 6 makes the sliding plate 54 slide toward the positioning member 52, the connecting member 578 slides into the pulling groove 554 of the pulling block 553, so that the pulling cylinder 577 can drive the placement plate 55 to separate from the sliding plate 54 and enter the lower frame 1, thereby avoiding the influence of external light sources on detection.

[0022] As a preferred embodiment, the lower detection component 575 and the side detection component 576 both include: The guide plate 5761 is connected with a detection cylinder 5763; A detection plate 5762 is slidably disposed on the guide plate 5761 and driven by a detection cylinder 5763 fixed on the guide plate 5761; Camera 2 5764 is fixed on the detection board 5762.

[0023] As a preferred embodiment, the side detection component 576 further includes: There are four guide rollers 5765, all of which are rotatably disposed on the lower end surface of the guide plate 5761 and correspond to the two guide grooves 573; The motor compartment 5766 is fixed on the lower end surface of the guide plate 5761 and has an adjusting motor fixed therein; The adjusting gear 5767 is fixed at the output end of the adjusting motor and meshes with the fixed gear 574 .

[0024] That is to say, when the workpiece enters the lower frame 1 with the placement plate 55, the workpiece is located between the multiple side detection components 576, and the multiple side detection components 576 can be rotated and adjusted according to the shape of the workpiece, so that multiple faces of the workpiece correspond to the camera 2 5764, which is convenient for a comprehensive visual inspection of the side wall of the workpiece. At the same time, the camera 1 4 and the lower detection component 575 detect the top and bottom of the workpiece, thereby improving the accuracy of the inspection. During the inspection, the distance between the camera 1 4 and the camera 2 5764 and the workpiece can be adjusted by the lifting device 3 and the inspection cylinder 5763, thereby adjusting the inspection range and focal length, thereby further improving the accuracy of the inspection.

[0025] Specifically, firstly, loading and unloading are performed by a robotic arm, so that the two loading components 5 are inspected alternately to improve the inspection efficiency, and the workpiece is placed on the placement plate 55 by the robotic arm, and then the workpiece is placed in the center position of the placement plate 55 by multiple positioning cylinders 56 to facilitate inspection. After the placement is completed, the sliding plate 54 is slid toward the positioning member 52 by the loading cylinder 6, so that the workpiece is located below the camera 4, and then the placement plate 55 and the workpiece are sent into the lower frame 1 together by the adjusting component 57, and the inspection brightness is provided by the lighting lamp, so as to perform a comprehensive inspection of the workpiece. After the inspection is completed, the workpiece is sent out by the adjusting component 57, and the workpiece is placed in the loading position by the loading component 5, and then the unloading operation is performed by the robotic arm.

[0026] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A workpiece defect detection system based on machine vision information acquisition, characterized in that: include: A lower frame (1), the upper end surface of which is fixed with an upper frame (2), and a plurality of lighting lamps are fixed inside the lower frame (1); The lifting device (3) is configured as two and symmetrically fixed on the upper frame (2); Camera 1 (4), fixed at the output end of the lifting device (3); The loading assembly (5) is configured as two, symmetrically arranged on the lower frame (1), and corresponding one to one with the lifting device (3); The feeding cylinder (6) is configured as two and is symmetrically fixed on the upper end surface of the lower frame (1), and its output end is connected to the feeding assembly (5); The loading assembly (5) comprises a guide rail (51) and a positioning member (52), both of which are fixed on the lower frame (1), and the guide rail (51) is configured as two, and a push block (53) is fixed on the side of the two guide rails (51) away from each other, and a guide inclined surface is provided on the push block (53), a sliding plate (54) is slidably arranged on the guide rail (51), and the sliding plate (54) is limited by the positioning member (52), and a placement plate (55) is slidably arranged in the middle position of the sliding plate (54), and a plurality of positioning cylinders (56) are symmetrically fixed on the upper end surface of the sliding plate (54), and an adjustment assembly (57) is fixed in the lower frame (1), and when the placement plate (55) contacts the positioning member (52), the adjustment assembly (57) is located directly below the placement plate (55).

2. A workpiece defect detection system based on machine vision information acquisition according to claim 1, characterized in that: Four limiting columns (541) are slidably arranged in the sliding plate (54), and a connecting block (542) is fixed on every two limiting columns (541), and a tension spring is arranged between the connecting block (542) and the sliding plate (54). Four positioning blocks (543) are also slidably arranged in the sliding plate (54), and a pressing spring is arranged between the positioning block (543) and the sliding plate (54).

3. A workpiece defect detection system based on machine vision information acquisition according to claim 2, characterized in that: The connecting block (542) is provided with a guide surface, the guide surface corresponds to the guide inclined surface of the pushing block (53), and the positioning block (543) is provided with an arc surface.

4. A workpiece defect detection system based on machine vision information acquisition according to claim 3, characterized in that: The placement plate (55) is made of a transparent material. A limiting groove (551) is provided on the placement plate (55) at a position corresponding to the limiting column (541). A positioning groove (552) is provided on the placement plate (55) at a position corresponding to the positioning block (543). Two pulling blocks (553) are symmetrically fixed on the lower end surface of the placement plate (55). A pulling groove (554) is provided on the pulling block (553), and the pulling groove (554) is a T-shaped groove.

5. The workpiece defect detection system based on machine vision information acquisition according to claim 4 is characterized in that: The regulating component (57) comprises: An adjusting disk (571) fixed in the lower frame (1); An adjustment chamber (572) is configured in a ring shape and is coaxially opened in the adjustment disk (571); The guide grooves (573) are configured as two annular structures, are coaxially opened in the adjustment disk (571), and are equidistantly arranged on both sides of the adjustment chamber (572); A fixed gear (574) coaxially fixed in the adjustment chamber (572); A lower detection component (575) fixed at the axis center position of the adjustment disk (571); The side detection components (576) are configured as a plurality of components, each of which is slidably disposed in the adjustment bin (572) and the guide groove (575); The pulling cylinder body (577) is configured as two and is symmetrically fixed in the adjustment disk (571); a connecting piece (578) is fixed to the output end of the pulling cylinder body (577), and the connecting piece (578) is slidably connected to the pulling groove (554).

6. A workpiece defect detection system based on machine vision information acquisition according to claim 5, characterized in that: The lower detection assembly (575) and the side detection assembly (576) both include: A guide plate (5761) is connected to a detection cylinder (5763); A detection plate (5762) is slidably disposed on the guide plate (5761) and is driven by a detection cylinder (5763) fixed on the guide plate (5761); Camera 2 (5764) is fixed on the detection board (5762).

7. A workpiece defect detection system based on machine vision information collection according to claim 6, characterized in that: The side detection component (576) further includes: The guide rollers (5765) are configured as four rollers, each of which is rotatably disposed on the lower end surface of the guide plate (5761) and corresponds to the two guide grooves (573); A motor compartment (5766) is fixed to the lower end surface of the guide plate (5761) and has an adjusting motor fixed therein; The adjusting gear (5767) is fixed to the output end of the adjusting motor and meshes with the fixed gear (574).

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