A visual detection device for appearance defects of a board

Abstract

The utility model discloses a kind of plate appearance flaw visual inspection equipment, it includes: butt joint transmission plate's first transmission belt module, second transmission belt module, third transmission belt module;Back detection module is arranged between first transmission belt module and second transmission belt module and is used to detect the bottom of plate;Front detection module is arranged above second transmission belt module;Left side detection module and right side detection module are arranged between second transmission belt module and third transmission belt module and are used to detect the both sides of plate;Side push correction module is arranged above first transmission belt module and is used to correct the position of plate. Back detection module, front detection module, left side detection module and right side detection module are sequentially used to visually inspect four directions of plate, so that plate can be flaw detected after being transmitted by first transmission belt module, second transmission belt module and third transmission belt module.

Description

Technical fields:

[0001] This utility model relates to the field of quality inspection technology, and specifically refers to a visual inspection device for appearance defects of sheet metal. Background technology:

[0002] Appearance defects in sheet materials refer to surface defects caused by problems with raw materials, processes, and equipment during production or processing, such as scratches, cracks, bubbles, and dimensional deviations, which directly affect product quality and performance. Detecting these defects is crucial for ensuring product safety, optimizing processes, and reducing production costs. Current detection methods include traditional physical means such as manual visual inspection and magnetic particle testing, as well as intelligent detection technologies based on machine vision, laser scanning, and infrared thermal imaging. For example, Chinese Patent Application Publication No. CN 118988784 A discloses a board surface defect detection and rejection device, which includes a conveying mechanism, a flipping mechanism, an inspection mechanism, and a handling robot. This device uses the conveying mechanism and the flipping mechanism to flip the board surface on a complete conveyor line. With the assistance of front and back inspection components, the same board surface can be inspected on both sides on the same conveyor line, improving inspection efficiency and avoiding inspection errors caused by misplacement of boards during the inspection process. The intermittently rotating flipping mechanism allows the conveying mechanism and the flipping mechanism to form a continuous conveyor line, enabling continuous conveying of boards and simultaneous front and back inspection. The handling robot is used to handle and reject boards with defects, achieving the classification and categorization of qualified and defective boards.

[0003] In the aforementioned existing technologies, the appearance of boards is still mainly inspected manually by comparing them with samples. This method is inefficient and cannot guarantee quality. While visual inspection equipment for detecting and removing surface defects in boards requires flipping the boards during inspection, which necessitates a long production line and cannot inspect the sides of the boards, leading to missed defects.

[0004] In view of the above, the inventors propose the following technical solution. Utility Model Content:

[0005] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a visual inspection device for defects in the appearance of sheet materials.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a visual inspection device for sheet metal appearance defects, comprising: a first transmission belt module, a second transmission belt module, and a third transmission belt module for connecting and transferring sheet metal; a back detection module disposed between the first transmission belt module and the second transmission belt module for detecting the bottom of the sheet metal; a front detection module disposed above the second transmission belt module for detecting the top of the sheet metal; a left detection module and a right detection module disposed between the second transmission belt module and the third transmission belt module for detecting both sides of the sheet metal; and a side-push correction module disposed above the first transmission belt module for correcting the position of the sheet metal.

[0007] Furthermore, in the above technical solution, the second and third transmission belt modules are covered with a cover for supporting the front detection module, the left detection module and the right detection module.

[0008] Furthermore, in the above technical solution, a first support frame for installing the front detection module is provided inside the housing, and a first Z-axis motion module for driving the front detection module to rise and fall is provided on the first support frame.

[0009] Furthermore, in the above technical solution, a second support frame for mounting the left detection module and the right detection module is provided inside the housing, and a first X-axis motion module for driving the right detection module to move horizontally is provided on the second support frame.

[0010] Furthermore, in the above technical solution, a fresh air system is provided on the top of the enclosure, and a control computer is also provided on the outer wall of the enclosure.

[0011] Furthermore, in the above technical solution, the side-push correction module includes a left positioning guide wheel module disposed on one side of the first transmission belt module, a second X-axis motion module spanning across the first transmission belt module, and a right positioning guide wheel module suspended below the second X-axis motion module and used to cooperate with the left positioning guide wheel module to correct the plate. The right positioning guide wheel module is set at the same height as the left positioning guide wheel module, and the right positioning guide wheel module can move closer to and away from the left positioning guide wheel module as the second X-axis motion module moves.

[0012] Furthermore, in the above technical solution, the left positioning guide wheel module includes a support beam, an elastic buckle that can be detachably fastened to the support beam, multiple roller pins that are vertically mounted in parallel on the elastic buckle, and at least two guide wheels that are sleeved on the roller pins, wherein the guide wheels on adjacent roller pins are staggered.

[0013] Furthermore, in the above technical solution, the two ends of the elastic buckle are respectively provided with grooves and protrusions that can be fastened to each other. There are two grooves symmetrically arranged and located on the inner side, and two protrusions symmetrically arranged and capable of being fastened to the two grooves.

[0014] Furthermore, in the above technical solution, the elastic buckle frame is provided with multiple slots for fastening the roller pins, and the roller pins are also fitted with isolation sleeves for separating the guide wheels.

[0015] By adopting the above technical solution, this utility model has the following beneficial effects compared with the prior art:

[0016] 1. In this utility model, a back inspection module, a front inspection module, a left inspection module, and a right inspection module are used to perform visual inspection on the board material in four directions in sequence. After the board material is passed through the first transmission belt module, the second transmission belt module, and the third transmission belt module, multiple defects on the board material can be detected in time. This allows for timely detection of scratches, bumps, stains, and other defects on the board material. It also helps to identify whether there are any cut defects on the board material's edges, whether the edge banding is scratched, bumped, poorly attached, or not properly attached, and whether there is any glue leakage. Furthermore, it helps to identify defects such as the diameter and position of the openings, the width and position of the grooves, and whether there are any defects in the openings and grooves.

[0017] 2. In this utility model, the side-push correction module on the first transmission belt module corrects the position of the incoming plate, ensuring that plates of different sizes can always be close to the left side of the transmission module and at a suitable angle with each detection module after entering. Attached image description:

[0018] Figure 1 This is a schematic diagram of the structure of this utility model. Figure 1 ;

[0019] Figure 2 This is a schematic diagram of the structure of this utility model. Figure 2 ;

[0020] Figure 3 This is a schematic diagram of the internal structure of this utility model;

[0021] Figure 4 This is a schematic diagram of the side-push correction module in this utility model;

[0022] Figure 5 This is a schematic diagram of the left-side positioning guide wheel module in this utility model. Detailed implementation method:

[0023] The present invention will be further described below with reference to specific embodiments and accompanying drawings.

[0024] See Figures 1 to 5 As shown, a visual inspection device for sheet metal appearance defects includes: a first transmission belt module 1, a second transmission belt module 2, and a third transmission belt module 3 for connecting and transferring sheet metal A; a back inspection module 4 disposed between the first transmission belt module 1 and the second transmission belt module 2 for inspecting the bottom of sheet metal A; a front inspection module 5 disposed above the second transmission belt module 2 for inspecting the top of sheet metal A; a left inspection module 6 and a right inspection module 7 disposed between the second transmission belt module 2 and the third transmission belt module 3 for inspecting both sides of sheet metal A; and a side-pushing correction module 8 disposed above the first transmission belt module 1 for correcting the position of sheet metal A. The back inspection module 4, front inspection module 5, left inspection module 6, and right inspection module 7 are used to perform visual inspection on the four sides of the board A in sequence. This allows for the detection of defects on multiple sides of the board A after it is passed through the first transmission belt module 1, the second transmission belt module 2, and the third transmission belt module 3. This promptly identifies scratches, dents, stains, and cut defects on each side of the board A. It also checks for scratches, dents, improper adhesion, or glue leakage on the edge banding, as well as defects such as the diameter and position of openings, the width and position of grooves, and any chipping or breakage at the openings and grooves. Furthermore, the side-push correction module 8 on the first transmission belt module 1 corrects the position of the incoming board A, ensuring that boards A of different sizes remain flush against the left side of the transmission module and at the appropriate angle to each inspection module.

[0025] The second and third transmission belt modules 2 and 3 are covered by a housing 9 to support the front detection module 5, the left detection module 6, and the right detection module 7. Inside the housing 9 is a first support frame 91 for mounting the front detection module 5, and a first Z-axis motion module 92 for driving the front detection module 5 to move up and down. Inside the housing 9 is a second support frame 93 for mounting the left detection module 6 and the right detection module 7, and a first X-axis motion module 94 for driving the right detection module 7 to move horizontally. A fresh air system 95 is installed on the top of the housing 9, and a control computer 96 is installed on the outer wall of the housing 9. By using the first Z-axis motion module 92 and the first X-axis motion module 94 in the housing 9 to drive the front detection module 5 up and down and the right detection module 7 left and right, respectively, the detection of sheet materials A of different sizes and thicknesses can be achieved.

[0026] The side-push correction module 8 includes a left positioning guide wheel module 81 disposed on one side of the first transmission belt module 1, a second X-axis motion module 82 spanning across the first transmission belt module 1, and a right positioning guide wheel module 83 suspended below the second X-axis motion module 82 and used to cooperate with the left positioning guide wheel module 81 to correct the plate A. The right positioning guide wheel module 83 is set at the same height as the left positioning guide wheel module 81, and the right positioning guide wheel module 83 can move closer to and away from the left positioning guide wheel module 81 as the second X-axis motion module 82 moves.

[0027] The left-side positioning guide wheel module 81 includes a supporting beam 811, an elastic buckle 812 that is detachably fastened to the supporting beam 811, multiple roller pins 813 vertically mounted side-by-side on the elastic buckle 812, and at least two guide wheels 814 sleeved on the roller pins 813, wherein the guide wheels 814 on adjacent roller pins 813 are staggered. The elastic buckle 812 has interlocking grooves 812A and protrusions 812B at both ends, with two symmetrically arranged grooves 812A located on the inner side, and two symmetrically arranged protrusions 812B that can be fastened to the two grooves 812A. The elastic buckle 812 has multiple slots 812C for fastening the roller pins 813, and the roller pins 813 are also fitted with isolation sleeves 815 for separating the guide wheels 814.

[0028] In summary, during operation, the present invention places sheet A on the first transmission belt module 1, which then transfers sheet A to the second transmission belt module 2. The side-push correction module 8 guides and positions sheet A, ensuring that the transferred sheet A is oriented in the same direction and close to one side. Furthermore, when sheet A passes the back detection module 4, the back detection module 4 detects defects on the bottom of sheet A. Furthermore, when sheet A passes the front detection module 5, the front detection module 5 detects defects on the top surface of sheet A. Furthermore, when sheet A passes between the left detection module 6 and the right detection module 7, the left detection module 6 and the right detection module 7 respectively detect defects on both sides of sheet A. Moreover, when sheet A passes the back detection module 4, the front detection module 5, the left detection module 6, and the right detection module 7, the front and back of sheet A can be detected, thereby completing the appearance defect detection of each side of sheet A.

[0029] Of course, the above description is only a specific embodiment of the present utility model and is not intended to limit the scope of the present utility model. All equivalent changes or modifications made to the structure, features and principles described in the claims of the present utility model should be included in the scope of the claims of the present utility model.

Claims

1. A visual inspection device for surface defects in sheet metal, characterized in that, include: The first transmission belt module (1), the second transmission belt module (2), and the third transmission belt module (3) are connected to the plate material (A); A back-side detection module (4) is set between the first transmission belt module (1) and the second transmission belt module (2) and is used to detect the bottom of the plate (A); The front detection module (5) is located above the second transmission belt module (2) and is used to detect the front of the plate (A); The left detection module (6) and the right detection module (7) are located between the second transmission belt module (2) and the third transmission belt module (3) and are used to detect both sides of the plate (A); A side-push correction module (8) is set above the first transmission belt module (1) and is used to correct the position of the plate (A).

2. The visual inspection equipment for appearance defects of sheet metal according to claim 1, characterized in that: The second transmission belt module (2) and the third transmission belt module (3) are covered with a cover (9) for supporting the front detection module (5), the left detection module (6) and the right detection module (7).

3. The visual inspection equipment for appearance defects of sheet metal according to claim 2, characterized in that: The housing (9) is provided with a first support frame (91) for mounting the front detection module (5), and the first support frame (91) is provided with a first Z-axis motion module (92) for driving the front detection module (5) to rise and fall.

4. The visual inspection equipment for appearance defects of sheet metal according to claim 2, characterized in that: The housing (9) is provided with a second support frame (93) for mounting the left detection module (6) and the right detection module (7). The second support frame (93) is provided with a first X-axis motion module (94) for driving the right detection module (7) to move horizontally.

5. The visual inspection equipment for appearance defects of sheet metal according to claim 2, characterized in that: A fresh air system (95) is provided on the top of the hood (9), and a control computer (96) is also provided on the outer wall of the hood (9).

6. A visual inspection device for appearance defects in sheet metal according to any one of claims 1-5, characterized in that: The side-push correction module (8) includes a left positioning guide wheel module (81) disposed on one side of the first transmission belt module (1), a second X-axis motion module (82) spanning across the first transmission belt module (1), and a right positioning guide wheel module (83) suspended below the second X-axis motion module (82) and used to cooperate with the left positioning guide wheel module (81) to correct the plate (A). The right positioning guide wheel module (83) is set at the same height as the left positioning guide wheel module (81), and the right positioning guide wheel module (83) can move closer to and away from the left positioning guide wheel module (81) as the second X-axis motion module (82) moves.

7. The visual inspection equipment for appearance defects of sheet metal according to claim 6, characterized in that: The left positioning guide wheel module (81) includes a support beam (811), an elastic buckle (812) that can be detachably fastened to the support beam (811), a plurality of roller pins (813) that are vertically mounted in parallel on the elastic buckle (812), and at least two guide wheels (814) that are sleeved on the roller pins (813), wherein the guide wheels (814) on two adjacent roller pins (813) are staggered.

8. The visual inspection equipment for appearance defects of sheet metal according to claim 7, characterized in that: The elastic buckle (812) has two grooves (812A) and protrusions (812B) that can be fastened to each other at both ends. There are two grooves (812A) symmetrically arranged and located on the inner side, and two protrusions (812B) symmetrically arranged and can be fastened to the two grooves (812A).

9. A visual inspection device for appearance defects in sheet metal according to claim 7, characterized in that: The elastic buckle (812) is provided with a plurality of slots (812C) for fastening the roller pin (813), and the roller pin (813) is also fitted with an isolation sleeve (815) for separating the guide wheel (814).

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