Apparent defect full-automatic detection equipment

Abstract

The invention discloses an appearance defect full-automatic detection device, which comprises a rack, on which a three-dimensional motion module is arranged; the grabbing part is arranged on the three-dimensional motion module; the plurality of visual detection modules are positioned on each side surface of the to-be-detected product during operation; the at least one visual detection module is arranged on the three-dimensional motion module for fixing the grabbing part and moves in cooperation with the grabbing part. One visual detection module and the grabbing part are arranged on one motion module of the three-dimensional motion module together, cooperative driving can be carried out in one axial direction, and the grabbing action of the to-be-detected product can be achieved; the visual detection module can detect the appearance of the opposite side surface of the to-be-detected product; and the other visual detection modules are used for performing appearance detection on the other side surfaces of the to-be-detected product, so that the appearance detection operation can be quickly and efficiently realized, manual control participation is not needed, and the detection result is more accurate and effective.

Description

Technical Field

[0001] This invention belongs to the field of product appearance defect detection, specifically, it relates to a fully automated appearance defect detection device. Background Technology

[0002] Optical communication interface products are an important component of optical communication systems, mainly used to realize functions such as optical signal connection, conversion and transmission.

[0003] Currently, the main methods for visual inspection of small products like optical communication interfaces fall into two categories. One is manual visual inspection, which is prone to visual fatigue and errors due to prolonged work. Differences in the interpretation of standards by different personnel can also lead to defects remaining after inspection, or misclassifying qualified products as defective. The other method uses machine inspection, primarily through automated optical inspection equipment. This type of equipment uses automated algorithms for image processing and analysis, enabling automatic focusing and rapid detection of defects such as scratches on the device's end face. However, the overall automated operation and product movement involved are cumbersome, resulting in low efficiency in inspecting all sides of a single optical communication interface product. This makes it unsuitable for the rapid and comprehensive visual inspection requirements of existing production lines.

[0004] In view of this, the present invention is proposed. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a fully automated appearance defect detection device. By setting one of the vision detection modules and the gripping part together on one of the motion modules of the three-dimensional motion module, they can be driven in concert along one of the axes. This not only realizes the gripping action of the product to be inspected, but also realizes the appearance detection of the front side of the product to be inspected by the vision detection module. The other vision detection modules perform appearance detection on the other sides of the product to be inspected, thereby realizing the appearance inspection operation quickly and efficiently, without the need for manual control, and the detection results are more accurate and effective.

[0006] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by the present invention is to provide a fully automated inspection device for appearance defects, comprising, A frame on which a three-dimensional motion module is mounted; The gripping unit is mounted on the three-dimensional motion module. Driven by the three-dimensional motion module, the gripping unit can move along the XYZ axes to grip or place the product to be inspected. Multiple visual inspection modules are positioned on various sides of the product to be inspected during operation to detect appearance defects on each side of the product. At least one visual detection module is mounted on the three-dimensional motion module of the fixed gripping part and moves in coordination with the gripping part.

[0007] Furthermore, guide rails are symmetrically mounted on the left and right sides of the frame, and the guide rails extend along the Y-axis; The 3D motion module includes an X-axis motion module, a Y-axis motion module, and a Z-axis motion module. The X-axis motion module is horizontally mounted on the guide rail; The Y-axis motion module is connected to the X-axis motion module and is used to drive the X-axis motion module to move along the Y-axis. The Z-axis motion module is mounted on the X-axis motion module and is used to move along the X-axis with the X-axis motion module. The gripping part and one of the vision detection modules are mounted on the Z-axis motion module.

[0008] Furthermore, the Y-axis motion module is mounted on the bottom surface of the frame, and the symmetry axis of the two guide rails coincides with the orthographic projection of the Y-axis motion module on the frame.

[0009] Furthermore, it also includes an R-axis motion module, which is mounted on the Z-axis motion module, and a gripping part is mounted on the R-axis motion module, so that the gripping part can rotate at any angle under the drive of the R-axis motion module.

[0010] Furthermore, the multiple visual detection modules include a left-side detection module, a right-side detection module, a bottom detection module, a top detection module, and a rear-side detection module. The left and right detection modules are symmetrically arranged on the frame, and a detection stage that can move along the Y-axis is set on the axis of symmetry between the two. The rear detection module is mounted on the frame and is positioned in the direction of movement of the detection table; The bottom detection module is mounted on the frame, located on the left or right side of the detection table; The top detection module is located on the Z-axis motion module.

[0011] Furthermore, when the testing station is in the first position, it is aligned with the bottom testing module on the Y-axis.

[0012] Furthermore, when the testing station is in the second working position, it is located at the midpoint of the vertical line connecting the left and right testing modules.

[0013] Furthermore, the frame is also equipped with a detection table motion module, whose motion direction is the same as that of the Y-axis motion module, which is used to drive the detection table to move freely between the first and second workstations.

[0014] By adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art: (1) By setting one of the vision inspection modules and the gripping part together on one of the motion modules of the three-dimensional motion module, the present invention can be driven in concert along one of the axes. It can not only realize the gripping action of the product to be inspected, but also realize the appearance inspection of the front side of the product to be inspected by the vision inspection module; and perform appearance inspection of the other sides of the product to be inspected by other vision inspection modules, thereby realizing the appearance inspection operation quickly and efficiently, without the need for manual control, and the inspection results are more accurate and effective.

[0015] (2) The present invention provides a Y-axis motion module on the symmetrical axis of the left and right guide rails. The Y-axis motion module is connected to the X-axis motion module through a connecting rod. The X-axis motion module can be driven by a set of Y-axis motion modules. In conjunction with the left and right guide rails, the X-axis motion module runs more smoothly and stably.

[0016] (3) The present invention integrates an R-axis motion module on the Z-axis motion module, which can realize the angle adjustment of the gripping part. The R-axis motion module is used to rotate the product to be tested by 180°, and then the front side of the original product to be tested that was not tested is inspected by the rear side inspection module to perform appearance inspection, thereby achieving full inspection of the six sides of the product to be tested.

[0017] (4) The present invention drives the detection table to move to the first station and the second station according to the operation steps by the detection table motion module. At the first station, it can ensure that the suction nozzle and the top detection module mounted on the Z-axis motion module can move arbitrarily along the X-axis, avoiding interference of the rear detection module, the left detection module and the right detection module on the movement of the gripping part or the top detection module. At the second station, the detection table is located at the midpoint of the vertical line connecting the left detection module and the right detection module, so that the left detection module and the right detection module can simultaneously and symmetrically detect the left and right sides of the product.

[0018] The specific embodiments of the present invention will now be described in further detail with reference to the accompanying drawings. Attached Figure Description

[0019] The accompanying drawings, as part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments and descriptions of the invention are used to explain the invention, but do not constitute an undue limitation of the invention. Obviously, the drawings described below are merely some embodiments, and those skilled in the art can obtain other drawings based on these drawings without creative effort. In the drawings: Figure 1 This is a schematic diagram of the overall assembly structure of the present invention; Figure 2 This is a schematic diagram of the structure of the three-dimensional motion module of the present invention; Figure 3 This is a schematic diagram of the structure of the three-dimensional motion module and the detection table motion module of the present invention; Figure 4 This is a schematic diagram of the structure of the visual detection module of the present invention; Figure 5 This is a schematic diagram of the structure of the Z-axis motion module and the R-axis motion module of the present invention; Figure 6 This is a schematic diagram of the structure of the detection table and the detection table motion module of the present invention; Figure 7 This is a structural schematic diagram of the support frame, the carrying plate, and the material tray of the present invention.

[0020] In the diagram: 1. Frame; 2. Guide rail; 3. X-axis motion module; 4. Y-axis motion module; 41. Connecting rod; 5. Z-axis motion module; 6. Visual inspection module; 61. Left side inspection module; 62. Right side inspection module; 63. Rear side inspection module; 64. Bottom inspection module; 65. Top inspection module; 7. Motion module of the testing platform; 8. R-axis motion module; 9. Testing station; 10. Support frame; 11. Cargo tray; 12. Material tray; 13. Grabbing section.

[0021] It should be noted that these accompanying drawings and textual descriptions are not intended to limit the scope of the invention in any way, but rather to illustrate the concept of the invention to those skilled in the art by referring to specific embodiments. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0023] In the description of this invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0024] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0025] like Figures 1 to 7 As shown, the fully automated appearance defect detection device of the present invention includes, Frame 1, on which a three-dimensional motion module is mounted; The gripping part 13 is disposed on the three-dimensional motion module. Driven by the three-dimensional motion module, the gripping part 13 can move along the XYZ axis to grip or place the product to be tested. Multiple visual inspection modules 6 are positioned on various sides of the product to be inspected during operation to perform appearance defect detection on various sides of the product to be inspected. At least one visual detection module 6 is disposed on the three-dimensional motion module of the fixed gripping part 13 and moves in coordination with the gripping part 13.

[0026] In this invention, the frame 1 includes at least a mounting base, on which a plurality of assembly positioning holes are provided. A carrying plate 11 is mounted on the frame 1 via a plurality of vertical support frames 10. The carrying plate 11 is used to place a tray 12 pre-filled with products, and the tray 12 is located at the front side of the mounting base.

[0027] The mounting base is equipped with a three-dimensional motion module, which allows movement along the X, Y, and Z axes. For details, please refer to the instruction manual. The X-axis extends left and right, the Y-axis extends forward and backward perpendicular to the X-axis, and the Z-axis extends vertically perpendicular to the plane containing the X and Y axes.

[0028] Multiple vision inspection modules 6 are mounted on the mounting base, each corresponding to a side of the product to be inspected. One vision inspection module 6 is mounted on one of the motion modules of the three-dimensional motion module along a certain axis, enabling coordinated driving. This allows the motion module to control the movement of the gripper 13 and the vision inspection module along a specific axis, thus enabling the gripping of the product and the visual inspection module 6 to inspect the appearance of the product's front side. The integrated assembly design of the gripper 13 and the vision inspection module 6 allows for the assembly of a set of three-dimensional motion modules within the limited space of the rack 1, achieving the removal of the product and the appearance inspection of the corresponding side. Furthermore, the other vision inspection modules 6 can perform appearance inspection on the remaining sides of the product, enabling rapid and efficient appearance inspection without manual intervention, resulting in more accurate and effective inspection results.

[0029] Specifically, the gripping unit 13 can use a pneumatic suction nozzle, which can effectively and quickly grip or place the product to be tested. Furthermore, guide rails 2 are symmetrically mounted on the left and right sides of the frame 1, and the guide rails 2 extend along the Y-axis; The three-dimensional motion module includes X-axis motion module 3, Y-axis motion module 4, and Z-axis motion module 5. Among them, the X-axis motion module 3 is horizontally arranged on the guide rail 2; The Y-axis motion module 4 is connected to the X-axis motion module 3 and is used to drive the X-axis motion module 3 to move along the Y-axis. The Z-axis motion module 5 is mounted on the X-axis motion module 3 and is used to move along the X-axis with the X-axis motion module 3. The gripping part 13 and one of the vision detection modules 6 are mounted on the Z-axis motion module 5.

[0030] Furthermore, the Y-axis motion module 4 is mounted on the bottom surface of the frame 1, and the axis of symmetry of the two guide rails 2 coincides with the orthographic projection of the Y-axis motion module 4 onto the frame 1.

[0031] In this invention, guide rails 2 are provided on the mounting bases on the left and right sides of the material tray 12. The guide rails 2 extend axially along the Y-axis. An X-axis motion module 3, which can slide along the guide rails 2, is mounted on the guide rails 2. The movement direction of the X-axis motion module 3 extends laterally to the left and right. A Y-axis motion module 4 is provided on the symmetrical axis of the two guide rails 2. The Y-axis motion module 4 is connected to the X-axis motion module 3 through a connecting rod 41. Driven by the Y-axis motion module 4, the X-axis motion module 3 slides along the guide rails 2.

[0032] Since the downward projection of the Y-axis motion module 4 is located at the projection of the axis of symmetry of the two guide rails 2 onto the mounting base, the X-axis motion module 3 can be driven by a single Y-axis motion module 4. Combined with the guide rails 2 on both sides, this makes the X-axis motion module 3 run more smoothly and stably. The Z-axis motion module 5 is connected to the X-axis motion module 3. The moving end of the Z-axis motion module 5 is connected to the gripping part 13 and one of the vision inspection modules 6. The aforementioned three-dimensional motion modules enable the gripping part 13 to accurately grasp and move the product to be inspected. Through a dynamic vision inspection module 6 combined with multiple fixed vision inspection modules 6, comprehensive appearance inspection of all sides of the product to be inspected can be performed efficiently.

[0033] Furthermore, it also includes an R-axis motion module 8, which is disposed on the Z-axis motion module 5, and a gripping part 13 is disposed on the R-axis motion module 8, so that the gripping part 13 can rotate at any angle under the drive of the R-axis motion module 8.

[0034] In this invention, an R-axis motion module 8 is integrated on the Z-axis motion module 5, wherein the gripping part 13 is connected to the rotating shaft end of the R-axis. Driven by the three-dimensional motion module, the gripping part 13 can move arbitrarily in three-dimensional space. Simultaneously, in conjunction with the R-axis motion module 8, the angle of the gripping part 13 can be adjusted. Specifically, during actual operation, the product to be tested may require fine-tuning of its angle due to vibrations caused by movement during placement. This can be achieved through the R-axis motion module 8, ensuring that the product to be tested is in the correct placement position.

[0035] Furthermore, the multiple visual detection modules 6 respectively include a left detection module 61, a right detection module 62, a bottom detection module 64, a top detection module 65, and a rear detection module 63. The left detection module 61 and the right detection module 62 are symmetrically arranged on the frame 1, and a detection stage 9 that can move along the Y-axis is arranged on the axis of symmetry between the two. The rear detection module 63 is mounted on the frame 1 and is positioned in the direction of movement of the detection table 9; The bottom detection module 64 is mounted on the frame 1 and is located on the left or right side of the detection table 9; The top detection module 65 is mounted on the Z-axis motion module 5.

[0036] In this invention, a left-side inspection module 61 and a right-side inspection module 62 are symmetrically arranged on a mounting base. A rear-side inspection module 63 is positioned on the perpendicular bisector of the line connecting the two modules. The three visual inspection modules 6 form an isosceles or equilateral triangle on the spatial line. Similarly, an inspection platform 9, movable along the Y-axis, is positioned on the path of the perpendicular bisector of the line connecting the left-side and right-side inspection modules 61 and 62, for placing the product to be inspected. The inspection platform 9 also includes an inspection platform motion module 7 for adjusting the coordinates of the inspection platform 9. A bottom inspection module 64 is positioned on the left or right side of the inspection platform 9, allowing the five visual inspection modules 6 to perform appearance inspections on each side of the product to be inspected.

[0037] Specific implementation method: The gripping unit 13 is driven by the X-axis motion module 3, Y-axis motion module 4, and Z-axis motion module 5 to accurately grip the product to be inspected on the tray 12 and move it directly above the bottom inspection module 64 for appearance inspection of the bottom surface of the product. After inspection, the product to be inspected is placed on the inspection table 9, and the top inspection module 65, which is connected to the Z-axis motion module 5, moves to the top of the product to perform appearance inspection of the top. Then, the inspection table 9 is moved by the inspection table motion module 7 to the inspection area enclosed by the left inspection module 61, the right inspection module 62, and the rear inspection module 63 to perform appearance inspection of the left, right, and top sides of the product.

[0038] For special requirements, the R-axis motion module 8 can be used to rotate the product to be inspected 180°, allowing the rear inspection module to perform visual inspection on the uninspected front side of the product, thus achieving comprehensive inspection of all six sides of the product. The product's pass / fail status is determined based on the corresponding inspection information. The tray 12 includes an empty tray 12 without any products to be inspected; qualified and unqualified products are placed at preset positions on the empty tray 12.

[0039] Furthermore, when the testing station 9 is in the first working position, it is aligned with the bottom testing module 64 on the Y-axis.

[0040] Furthermore, when the testing station 9 is in the second working position, it is located at the midpoint of the vertical line connecting the left testing module 61 and the right testing module 62.

[0041] Furthermore, the frame 1 is also equipped with a motion module 7 for the inspection table 9, whose motion direction is the same as that of the Y-axis motion module, which is used to drive the inspection table 9 to move freely between the first and second workstations.

[0042] In this invention, in the initial stage, the inspection stage 9 is positioned at the same coordinate as the bottom inspection module 64 on the Y-axis. Specifically, during adjustment, the high-precision drive of the inspection stage motion module 7 can achieve zero-error alignment between the two in the Y-axis direction. This ensures that the nozzle mounted on the Z-axis motion module 5 and the top inspection module 65 can move arbitrarily along the X-axis, avoiding interference from the rear inspection module 63, left inspection module 61, and right inspection module 62 on the movement of the gripping part 13 or the top inspection module 65. This covers the entire lateral area of ​​the frame 1, ensuring the smoothness of product handling and the top inspection process. Next, the gripping part 13 can directly grip the product to be inspected and place it above the bottom inspection module 64 for appearance inspection of its bottom sidewalls. At this time, the top inspection module 65 (such as a high-definition industrial camera) can directly perform a comprehensive inspection of the top of the product carried by the inspection stage 9 without adjusting the position of the inspection module, significantly improving inspection efficiency.

[0043] When inspecting a product, the inspection platform 9 is precisely moved to the second workstation using the drive module 9. Specifically, the inspection platform 9 is positioned at the midpoint of the vertical line connecting the left and right inspection modules 61 and 62. This allows the left and right inspection modules 61 and 62 to simultaneously and symmetrically inspect the left and right sides of the product. Since the distances from the left and right inspection modules to the product are consistent, deviations in inspection data (such as dimensional measurement errors and missed defect identification) caused by differences in inspection distances are avoided.

[0044] It should be noted that the X-axis motion module 3, Y-axis motion module 4, Z-axis motion module 5 and the motion module 7 of the detection table 9 all use a drive motor as the power source, a ball screw transmission assembly and a linear guide rail 2 as the basic structural components. The movement of the moving end (slider) in each motion module is realized through the control of the drive motor.

[0045] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-described technical content to create equivalent embodiments without departing from the scope of the present invention. The implementation schemes in the above embodiments can also be further combined or replaced. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A fully automated inspection device for appearance defects, characterized in that: include, A frame on which a three-dimensional motion module is mounted; The gripping unit is mounted on the three-dimensional motion module. Driven by the three-dimensional motion module, the gripping unit can move along the XYZ axes to grip or place the product to be inspected. Multiple visual inspection modules are positioned on various sides of the product to be inspected during operation to detect appearance defects on each side of the product. At least one visual detection module is mounted on the three-dimensional motion module of the fixed gripping part and moves in coordination with the gripping part.

2. The fully automated appearance defect detection equipment according to claim 1, characterized in that: The frame is symmetrically equipped with guide rails on the left and right sides, and the guide rails extend along the Y-axis; The 3D motion module includes an X-axis motion module, a Y-axis motion module, and a Z-axis motion module. The X-axis motion module is horizontally mounted on the guide rail; The Y-axis motion module is connected to the X-axis motion module and is used to drive the X-axis motion module to move along the Y-axis. The Z-axis motion module is mounted on the X-axis motion module and is used to move along the X-axis with the X-axis motion module. The gripping part and one of the vision detection modules are mounted on the Z-axis motion module.

3. The fully automated appearance defect detection equipment according to claim 2, characterized in that: The Y-axis motion module is mounted on the bottom surface of the frame, and the symmetry axes of the two guide rails coincide with the orthographic projection of the Y-axis motion module on the frame.

4. A fully automated inspection device for appearance defects according to claim 2 or 3, characterized in that: It also includes an R-axis motion module, which is mounted on the Z-axis motion module, and a gripping part is mounted on the R-axis motion module, so that the gripping part can rotate at any angle under the drive of the R-axis motion module.

5. The fully automated appearance defect detection equipment according to claim 4, characterized in that: The multiple visual inspection modules include a left-side inspection module, a right-side inspection module, a bottom inspection module, a top inspection module, and a rear-side inspection module. The left and right detection modules are symmetrically arranged on the frame, and a detection stage that can move along the Y-axis is set on the axis of symmetry between the two. The rear detection module is mounted on the frame and is positioned in the direction of movement of the detection table; The bottom detection module is mounted on the frame, located on the left or right side of the detection table; The top detection module is located on the Z-axis motion module.

6. The fully automated appearance defect detection equipment according to claim 5, characterized in that: When the testing station is in the first position, it is aligned with the bottom testing module on the Y-axis.

7. The fully automated appearance defect detection equipment according to claim 6, characterized in that: When the testing station is in the second position, it is located at the midpoint of the vertical line connecting the left and right testing modules.

8. The fully automated appearance defect detection equipment according to claim 5, characterized in that: The frame is also equipped with a detection table motion module, whose motion direction is the same as that of the Y-axis motion module, which is used to drive the detection table to move freely between the first and second workstations.

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