Coating defect detection device

Abstract

The invention relates to the technical field of coating defect detection, in particular to a coating defect detection device which comprises a main working table, an auxiliary supporting table fixed to the main working table is arranged on one side of the main working table, and a visual detection system is arranged above the main working table. The visual detection system comprises a first detection module and a second detection module perpendicular to the first detection module, industrial detection cameras used for defect detection are arranged in the structures of the first detection module and the second detection module, and a carrying module used for hoisting and moving workpieces is installed above the auxiliary supporting table. The carrying module comprises a linear control module, a carrying plate moved by the linear control module and a workpiece fixing piece fixed below the carrying plate, the linear control module is composed of a servo motor and a lead screw, and a workpiece fixing hook is arranged in the workpiece fixing piece.

Description

Technical Field

[0001] The present invention relates to the technical field of coating defect detection, and in particular to a coating defect detection device. Background Art

[0002] Sheet metal spraying is a process of applying a coating to the surface of metal sheets, aiming to improve the corrosion resistance, wear resistance and aesthetics of the product. After spraying, sheet metal spray defect detection is a key quality control step, which ensures the appearance and functional quality of sheet metal products. With the development of technology, modern spray defect detection technology includes non-destructive testing technologies such as X-ray detection, ultrasonic detection, optical detection, and the application of machine learning and deep learning technologies. These technologies can realize the autonomous identification and classification of sheet metal defects and improve the accuracy and efficiency of detection.

[0003] At present, a Chinese patent with publication number CN105057229A discloses a spray surface defect detection machine, which includes an inlet, an outlet, a feeding mechanism, and a first CCD detection module and a second CCD detection module arranged between the inlet and the outlet, wherein the first CCD detection module is arranged close to the inlet relative to the second CCD detection module, the first CCD detection module is used to perform CCD rough inspection on the surface defects of the product, and remove defective products with predetermined larger surface defects after detection, and the second CCD detection module is used to perform CCD micro inspection on the surface defects of the product, and remove defective products with predetermined smaller surface defects after detection.

[0004] Although this defect detection machine can efficiently and accurately detect the defects of the product's sprayed surface, it has some defects: it can only be used to process small sheet metal workpieces, and its structural design cannot accommodate, transport, and detect large-sized workpieces. During the detection process, it is also unable to adjust the angle position of the workpiece during the transportation process, and cannot process workpieces with special-shaped structures. Summary of the invention

[0005] In view of the above situation, in order to overcome the defects of the prior art, the purpose of the present invention is to provide a coating defect detection device, and the above technical purpose is achieved through the following technical solutions: A coating defect detection device comprises a main workbench, a secondary support platform fixed to the main workbench is provided on one side of the main workbench, a visual inspection system is provided above the main workbench, the visual inspection system comprises a first inspection module and a second inspection module vertically arranged to the first inspection module, the first inspection module and the second inspection module are both provided with industrial inspection cameras for defect detection, a transport module for hoisting and moving workpieces is installed above the secondary support platform, the transport module comprises a linear control module, a transport plate moved by the linear control module, and a workpiece fixing part fixed under the transport plate, the linear control module is composed of a servo motor and a screw rod, and the workpiece fixing part is provided with a workpiece fixing hook.

[0006] Furthermore, the detection direction of the first detection module is toward the right side of the main workbench, and it is fixed as a whole to the upper end of the main workbench. The first detection module includes a first mounting substrate, four groups of first industrial detection cameras, a bottom support plate, and a lateral support plate. The four groups of the first industrial detection cameras are embedded and fixed inside the first mounting substrate, the bottom support plate is fixed to the lower side of the first mounting substrate, and the bottom support plate is fixed above the main workbench, the lateral support plate is fixed to one side of the first mounting substrate, and the lateral support plate is fixed to the side wall of the auxiliary support platform.

[0007] Furthermore, the detection direction of the second detection module is toward the direction of the secondary support platform, and a sliding track is fixedly provided above the main workbench. The second detection module is slidably assembled above the sliding track. The second detection module includes a second mounting substrate, four groups of second industrial detection cameras, a bottom mounting block, a connecting block, and a control cylinder. The four groups of the second industrial detection cameras are embedded and fixed inside the second mounting substrate. The bottom mounting blocks are provided with two groups and are respectively fixed on both sides of the lower end of the second mounting substrate. The connecting blocks are arranged corresponding to each group of bottom mounting blocks and fixed on their outer side walls. The control cylinder is placed on the upper end of the main workbench, and the piston rod of the control cylinder is directly connected and fixed to the connecting block.

[0008] Furthermore, the workpiece fixing part also includes a fixed column, a connecting rod, and a suspension rod. The fixed column is fixedly connected to the lower end of the carrying plate, the connecting rod is fixed to the inner side of the fixed column, the suspension rod is fixed to the lower end of the connecting rod, and the workpiece fixing hook is installed on the suspension rod, and the workpiece fixing hook can rotate along the suspension rod.

[0009] Furthermore, a positioning rod is provided at the upper end of the main workbench, one end of which is fixed to the side wall of the auxiliary support platform, and the bottom mounting block is arranged through the positioning rod to enhance the stability of the second mounting base plate when it moves.

[0010] In summary, the present invention has the following beneficial effects: There are devices based on industrial cameras to detect surface defects of workpieces in both directions of the inspection station, which can inspect both sides of the surface at the same time; The workpiece fixing method is relatively flexible. Since the hook can rotate freely, the workpiece can be placed in an adjustable direction before being transported to the inspection station to better meet the inspection needs of workpieces of different shapes. In the inspection station, one group of inspection modules is fixedly installed, and the other group of inspection modules can be adjusted forward and backward in position, so as to adjust the distance from the auxiliary support platform according to the size of the workpiece to be tested, and can better handle workpieces of different sizes. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present application, but do not constitute an improper limitation of the present invention. In the drawings: Figure 1 It is an oblique view of the present invention; Figure 2 is a front view of the present invention; Figure 3 is a side view of the present invention; Figure 4 It is a top view of the present invention.

[0012] In the figure, 1, main working table; 2, auxiliary supporting table; 3, first detection module; 301, first mounting substrate; 302, first industrial detection camera; 303, bottom support plate; 304, lateral support plate; 4, second detection module; 401, second mounting substrate; 402, second industrial detection camera; 403, bottom mounting block; 404, connecting block; 405, control cylinder; 5, transport plate; 6, servo motor; 7, screw rod; 8, workpiece fixing hook; 9, fixing column; 10, connecting rod; 11, suspension rod; 12, positioning rod. DETAILED DESCRIPTION

[0013] The above and other technical contents, features and effects of the present invention are described in detail below with reference to the attached Figure 1 To Attachment Figure 4 The detailed description of the embodiments will clearly show that the structural contents mentioned in the following embodiments are all based on the drawings in the specification.

[0014] Exemplary embodiments of the present invention will be described below with reference to the accompanying drawings. Example

[0015] A coating defect detection device includes a main workbench, a secondary support platform fixed to the main workbench is provided on one side of the main workbench, a visual inspection system is provided above the main workbench, the visual inspection system includes a first inspection module, and a second inspection module vertically arranged with the first inspection module, the first inspection module and the second inspection module are both provided with industrial inspection cameras for defect detection, the industrial inspection cameras capture surface image information of workpieces, and transmit it to a processing terminal for image processing and inspection, a transport module for hoisting and moving workpieces is installed above the secondary support platform, the transport module includes a linear control module, a transport plate moved by the linear control module, and a workpiece fixing part fixed under the transport plate, the linear control module is composed of a servo motor and a lead screw, and since the linear control module composed of the servo motor and the lead screw belongs to the public technical content that those skilled in the art should be familiar with, it will not be disclosed here additionally.

[0016] The detection direction of the first detection module is toward the right side of the main workbench, and it is fixed as a whole to the upper end of the main workbench. The first detection module includes a first mounting substrate, four groups of first industrial detection cameras, a bottom support plate, and a lateral support plate. The four groups of first industrial detection cameras are embedded and fixed inside the first mounting substrate, the bottom support plate is fixed to the lower side of the first mounting substrate, and the bottom support plate is fixed above the main workbench, the lateral support plate is fixed to one side of the first mounting substrate, and the lateral support plate is fixed to the side wall of the auxiliary support platform.

[0017] The detection direction of the second detection module is toward the direction of the secondary support platform. A sliding track is fixed above the main workbench. The second detection module is slidably assembled above the sliding track. The second detection module includes a second mounting substrate, four groups of second industrial detection cameras, a bottom mounting block, a connecting block, and a control cylinder. The four groups of second industrial detection cameras are embedded and fixed inside the second mounting substrate. Two groups of bottom mounting blocks are provided and are respectively fixed on both sides of the lower end of the second mounting substrate. A connecting block is arranged corresponding to each group of bottom mounting blocks and fixed on its outer side wall. The control cylinder is placed on the upper end of the main workbench, and the piston rod of the control cylinder is directly connected and fixed to the connecting block.

[0018] In the above structure, the first industrial inspection camera and the second industrial inspection camera are arranged in such a manner as to cover the four corners of the workpiece surface and to capture image information of all positions on the workpiece surface as much as possible.

[0019] The workpiece fixing part includes a workpiece fixing hook, a fixing column, a connecting rod, and a suspension rod. The fixing column is fixedly connected to the lower end of the transport plate, the connecting rod is fixed to the inner side of the fixing column, the suspension rod is fixed to the lower end of the connecting rod, the workpiece fixing hook is installed on the suspension rod, and the workpiece fixing hook can rotate along the suspension rod.

[0020] A positioning rod is provided at the upper end of the main workbench, one end of which is fixed to the side wall of the auxiliary support platform, and a bottom mounting block is arranged through the positioning rod to enhance the stability of the second mounting base plate when it moves.

[0021] In an embodiment of the present invention, the hole groove on the workpiece to be measured is hung on the workpiece fixing hook, and then two groups of advance preparations are performed according to the size and shape of the workpiece. ① According to the shape of the workpiece, the angle at which the workpiece is placed and transported to the detection station is selected. In order to enhance stability and prevent the workpiece from rotating, the workpiece needs to be hung on two groups of workpiece fixing hooks at the same time. However, if there is a non-right-angle structure in the workpiece structure, only one group of workpiece hooks can be used at this time, and the placement angle of the workpiece is adjusted so that at least one surface to be measured faces the first detection module or the second detection module; ② The position of the second detection module is adjusted according to the size of the workpiece. At this time, the piston rod of the control cylinder is adjusted to drive the bottom mounting block to move through the connecting block, thereby achieving the purpose of adjusting the position of the second mounting substrate; when the above preparations are completed, the workpiece to be measured is controlled by the linear control module to move to the detection station. At this time, the first industrial detection camera in the first detection module and the second industrial detection camera in the second detection module capture the image of the workpiece surface, and transmit the image information to the processing terminal for image processing.

[0022] The above is a further detailed description of the present invention in combination with a specific implementation method, and it cannot be determined that the specific implementation of the present invention is limited to this; for technical personnel in the technical field to which the present invention belongs and related technical fields, based on the technical solution of the present invention, the expansion and replacement of operating methods and data should all fall within the protection scope of the present invention.

Claims

1. A coating defect detection device, characterized in that: The invention comprises a main workbench (1), a secondary support platform (2) fixed to the main workbench (1) is provided on one side of the main workbench (1), a visual inspection system is provided above the main workbench (1), the visual inspection system comprises a first inspection module (3), and a second inspection module (4) arranged perpendicular to the first inspection module (3), the first inspection module (3) and the second inspection module (4) are both provided with industrial inspection cameras for defect inspection, a transport module for hoisting and moving workpieces is installed above the secondary support platform (2), the transport module comprises a linear control module, a transport plate (5) moved by the linear control module, and a workpiece fixing member fixed below the transport plate (5), the linear control module is composed of a servo motor (6) and a screw rod (7), and the workpiece fixing member is provided with a workpiece fixing hook (8).

2. A coating defect detection device according to claim 1, characterized in that: The detection direction of the first detection module (3) is toward the right side of the main workbench (1), and the first detection module (3) is fixed as a whole to the upper end of the main workbench (1). The first detection module (3) comprises a first mounting substrate (301), four groups of first industrial detection cameras (302), a bottom support plate (303), and a lateral support plate (304). The four groups of first industrial detection cameras (302) are embedded and fixed inside the first mounting substrate (301), the bottom support plate (303) is fixed to a side below the first mounting substrate (301), and the bottom support plate (303) is fixed above the main workbench (1), the lateral support plate (304) is fixed to a side of the first mounting substrate (301), and the lateral support plate (304) is fixed to a side of the first mounting substrate (301), and the lateral support plate (304) is fixed to a side wall of the auxiliary support platform (2).

3. A coating defect detection device according to claim 1, characterized in that: The detection direction of the second detection module (4) is toward the direction of the secondary support platform (2); a sliding track is fixedly provided above the main workbench (1); the second detection module (4) is slidably assembled above the sliding track; the second detection module (4) comprises a second mounting substrate (401), four groups of second industrial detection cameras (402), a bottom mounting block (403), a connecting block (404), and a control cylinder (405); the four groups of second industrial detection cameras (402) are embedded and fixed inside the second mounting substrate (401); the bottom mounting block (403) is provided with two groups and is respectively fixed at the positions on both sides of the lower end of the second mounting substrate (401); the connecting block (404) is provided corresponding to each group of bottom mounting blocks (403) and is fixed at the outer side wall thereof; the control cylinder (405) is placed at the upper end of the main workbench (1), and the piston rod of the control cylinder (405) is directly connected and fixed to the connecting block (404).

4. A coating defect detection device according to claim 1, characterized in that: The workpiece fixing member further comprises a fixing column (9), a connecting rod (10), and a hanging rod (11); the fixing column (9) is fixedly connected to the lower end of the transport plate (5); the connecting rod (10) is fixed to the inner side of the fixing column (9); the hanging rod (11) is fixed to the lower end of the connecting rod (10); the workpiece fixing hook (8) is mounted on the hanging rod (11); and the workpiece fixing hook (8) can rotate along the hanging rod (11).

5. A coating defect detection device according to claim 3, characterized in that: A positioning rod (12) is provided at the upper end of the main workbench (1), one end of the positioning rod (12) is fixed to the side wall of the auxiliary support platform (2), and the bottom mounting block (403) is arranged through the positioning rod (12) to enhance the stability of the second mounting base plate (401) when moving.

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