Visual inspection device for reducing visual inspection error rate

Abstract

The utility model provides a kind of visual inspection device for reducing visual inspection error rate, including two mirror image settings side support plate, the lower part of side support plate is fixedly connected with U-shaped groove, the inside fixed connection of U-shaped groove has image sensor, the upper portion of side support plate is slidably provided with lifting plate, and a plurality of first connecting ears are provided on lifting plate, the side wall of side support plate is fixedly connected with first electric cylinder, telescopic rod and first connecting ear are connected, lifting plate is fixedly connected with circular thin shell, the inside fixed connection of circular thin shell has electromagnet, the output of electromagnet is fixedly connected with clamping plate, the inside of circular thin shell is provided with second electric cylinder, and connecting rod extends out in the inside of second electric cylinder, connecting rod is fixedly connected with mask, and opening is provided on mask.The utility model, non-detection area is shielded, and the influence of ambient light is reduced simultaneously, to reduce the error rate of detection.

Description

Technical Field

[0001] This utility model relates to the field of visual inspection technology, and in particular to a visual inspection device for reducing the visual inspection error rate. Background Technology

[0002] Visual inspection uses machines to replace human eyes for measurement and judgment. It involves machine vision products converting the captured target into image signals, transmitting them to a dedicated image processing system, and then converting them into digital signals based on pixel distribution, brightness, color, and other information. The image system performs various calculations on these signals to extract the target's features, and then controls the on-site equipment based on the judgment results. It is a valuable mechanism for production, assembly, or packaging. It has immeasurable value in detecting defects and preventing defective products from being delivered to consumers.

[0003] During workpiece inspection, image sensors typically focus on the area being inspected. However, for workpieces that are large in size or have a long inspection area, non-inspection areas may also be captured during inspection, causing interference in subsequent image recognition. In addition, the presence of ambient light can also affect the accuracy of the inspection. Utility Model Content

[0004] To address the aforementioned problems, this utility model discloses a visual inspection device for reducing the visual inspection error rate. The device includes two mirror-mounted side support plates. A U-shaped groove is fixedly connected to the lower part of each side support plate. An image sensor is fixedly connected inside the U-shaped groove, and supplementary lighting strips are fixedly connected to both sides of the image sensor. The image sensor is positioned inside the U-shaped groove for capturing images of the product from below.

[0005] A lifting plate is slidably mounted on the upper part of the side support plate. The lifting plate has several first connecting ears. A first electric cylinder is fixedly connected to the side wall of the side support plate. A telescopic rod extends upward from the first electric cylinder, and the end of the telescopic rod is fixedly connected to one of the first connecting ears. That is, when the first electric cylinder is activated, the telescopic rod extends or retracts, thereby raising or lowering the lifting plate.

[0006] A circular thin shell is fixedly connected to the lifting plate, and an electromagnet is fixedly connected inside the circular thin shell. A clamping plate is fixedly connected to the output end of the electromagnet. When the electromagnet is energized, it extends, allowing the clamping plate to hold the workpiece.

[0007] The circular thin shell houses a second electric cylinder, from which a connecting rod extends. A cover plate with an opening is fixedly connected to the connecting rod. When the workpiece is clamped on the clamping plate, the second electric cylinder operates, bringing the connecting rod and cover plate closer to the workpiece. The shape of the opening matches the contour of the workpiece's inspection surface, thus reducing interference and improving inspection efficiency by blocking non-inspection areas.

[0008] Preferably, the side support plate is provided with a second connecting lug, and a guide rod is fixedly connected to the second connecting lug. The guide rod passes through one of the first connecting lugs, and a spring is inserted through the guide rod, with one end of the spring abutting against the first connecting lug and the other end abutting against the second connecting lug. The guide rod enables smooth up-and-down sliding of the lifting plate, while the spring ensures that the lifting plate maintains its upper or lower position.

[0009] Preferably, the second electric cylinder has a screw inside, and the end of the connecting rod is threaded onto the screw. The main structure of the second electric cylinder includes a motor, a housing, and a screw inside the housing. The output end of the motor and the end of the screw are driven by gear meshing. When the motor is working, the screw rotates, thereby realizing the rotation of the screw. That is, the connecting rod slides in the axial direction of the screw. In addition, the connecting rod is slidably engaged inside the housing.

[0010] Preferably, one end of the circular thin shell is provided with a sealing plate, the connecting rod and the output end of the electromagnet both pass through the sealing plate, and the electromagnet and the second electric cylinder are both fixedly connected to the sealing plate.

[0011] Preferably, the electromagnet is rotatably connected inside a circular thin shell, and a drive motor is fixedly connected inside the circular thin shell. A first pulley is fixedly connected to the output end of the drive motor, and a second pulley is fixedly connected to the side wall of the electromagnet. A synchronous belt is sleeved on the first and second pulleys. When the drive motor is started, the electromagnet rotates through the transmission of the first pulley, the synchronous belt, and the second pulley, and the second electric cylinder fixed on the sealing plate rotates together.

[0012] Preferably, a side shell is fixedly connected to the side support plate, and a third connecting lug is provided on the side support plate, with the side shell fixedly connected to the third connecting lug. This protects the first electric cylinder, spring, etc., and improves the aesthetics of the device.

[0013] The beneficial effects of this utility model are as follows: 1. A mask is provided to block the non-detection area. During shooting, the area is located in a U-shaped groove, and the mask makes the U-shaped groove relatively closed, which can reduce the interference of external ambient light. The combination of the two can reduce external interference and reduce the detection error rate.

[0014] 2. This utility model can realize automated visual inspection and can also realize multi-faceted inspection of workpieces. Attached Figure Description

[0015] Figure 1 This is a three-dimensional schematic diagram of the present invention; Figure 2 This is a first-view exploded view of the side support plate of this utility model; Figure 3 This is a second-view exploded view of the side support plate of this utility model; Figure 4 For the present utility model Figure 2 Enlarged view of point A in the middle; Figure 5 This is a schematic diagram of the internal structure of the circular thin shell of this utility model.

[0016] List of reference numerals in the attached diagram: 1. Side support plate; 2. U-shaped groove; 3. Image sensor; 4. Fill light strip; 5. Mask plate; 6. Side shell; 7. First electric cylinder; 8. Telescopic rod; 9. Sealing plate; 10. Circular thin shell; 11. Lifting plate; 12. First connecting ear; 13. Second connecting ear; 14. Spring; 15. Guide rod; 16. Third connecting ear; 17. Connecting rod; 18. Second electric cylinder; 19. Electromagnet; 20. Drive motor; 21. Synchronous belt; 22. First pulley; 23. Second pulley; 24. Clamping plate. Detailed Implementation

[0017] The present invention will be further explained below with reference to the accompanying drawings and specific embodiments. It should be understood that the following specific embodiments are only for illustrating the present invention and are not intended to limit the scope of the present invention. It should be noted that the terms "front," "rear," "left," "right," "up," and "down" used in the following description refer to the directions in the accompanying drawings, and the terms "inner" and "outer" refer to the directions toward or away from the geometric center of a specific component, respectively.

[0018] like Figures 1 to 5 As shown, a visual inspection device for reducing the error rate of visual inspection includes two mirror-arranged side support plates 1. The side support plates 1 are L-shaped with fixed through holes at the bottom. A U-shaped groove 2 is fixedly connected to the bottom of the side support plates 1. Both the support plates 1 and the U-shaped groove 2 are sheet metal parts obtained by punching and bending. An image sensor 3 is fixedly connected inside the U-shaped groove 2. The image sensor 3 captures images of the workpiece for image recognition. Supplementary light strips 4 are fixedly connected to both sides of the image sensor 3.

[0019] A lifting plate 11 is slidably mounted on the upper part of the side support plate 1. Several first connecting ears 12 are provided on the lifting plate 11. A first electric cylinder 7 is fixedly connected to the side wall of the side support plate 1. A telescopic rod 8 extends upward from the first electric cylinder 7, and the end of the telescopic rod 8 is fixedly connected to one of the first connecting ears 12. Activating the first electric cylinder 7 causes the telescopic rod 8 to extend or retract, thereby raising or lowering the lifting plate 11.

[0020] A circular thin shell 10 is fixedly connected to the lifting plate 11. An electromagnet 19 is fixedly connected inside the circular thin shell 10. A clamping plate 24 is fixedly connected to the output end of the electromagnet 19. When the workpiece is placed between the two circular thin shells 10, the electromagnet 19 is energized and the two clamping plates 24 move closer and clamp the workpiece.

[0021] A second electric cylinder 18 is installed inside the circular thin shell 10. A connecting rod 17 extends from the inside of the second electric cylinder 18, and a mask 5 is fixedly connected to the connecting rod 17. The mask 5 has an opening. After the workpiece is clamped, the second electric cylinder 18 operates, causing the mask 5 to abut against the workpiece. The opening on the mask 5 exposes the inspection surface. The mask 5 is a solid color, which can cover non-inspection areas, thereby reducing interference with subsequent image recognition and lowering the error rate of visual inspection. The mask 5 can be replaced according to the type of workpiece.

[0022] The side support plate 1 is provided with a second connecting ear 13. There are two sets of second connecting ears 13. A guide rod 15 is fixedly connected to the second connecting ear 13. Each set of second connecting ears 13 is provided with a guide rod 15 and is fixed by a nut connection. The guide rod 15 passes through one of the first connecting ears 12. The guide rod 15 is used to make the lifting plate 11 rise and fall smoothly. A spring 14 is inserted through the guide rod 15. One end of the spring 14 abuts against the first connecting ear 12 and the other end abuts against the second connecting ear 13. The spring 14 is used to make the lifting plate 11 be in the upper position.

[0023] The second electric cylinder 18 has a screw inside, and the end of the connecting rod 17 is threaded onto the screw. Furthermore, the main structure of the second electric cylinder 18 includes a housing, a screw, and a motor. The output end of the motor and the screw are connected by gear transmission. When the motor is working, the screw rotates, realizing the axial sliding of the connecting rod 17 on the screw.

[0024] A sealing plate 9 is provided at one end of the circular thin shell 10. The sealing plate 9 is a circular plate. Furthermore, the sealing plate 9 and the circular thin shell 10 are rotatably connected. The output ends of the connecting rod 17 and the electromagnet 19 both pass through the sealing plate 9. The electromagnet 19 and the second electric cylinder 18 are both fixedly connected to the sealing plate 9. The sealing plate 9 is provided with an opening for the connecting rod 17 to move.

[0025] An electromagnet 19 is rotatably connected inside a circular thin-shell 10, meaning the housing of the electromagnet 19 and the circular thin-shell 10 are rotatably connected. A drive motor 20 is fixedly connected inside the circular thin-shell 10. A first pulley 22 is fixedly connected to the output end of the drive motor 20, and a second pulley 23 is fixedly connected to the side wall of the electromagnet 19. A synchronous belt 21 is fitted onto the first pulley 22 and the second pulley 23. When the drive motor 20 is started, the electromagnet 19 rotates through the transmission via the first pulley 22, the synchronous belt 21, and the second pulley 23, causing the components directly or indirectly connected to it to rotate as well.

[0026] A side shell 6 is fixedly connected to the side support plate 1. The side shell 6 improves the aesthetics of the device and protects internal components such as the first electric cylinder 7 and spring 14. A third connecting ear 16 is provided on the side support plate 1, and the side shell 6 is fixedly connected to the third connecting ear 16. The third connecting ear 16 and the side shell 6 are fixedly connected by screws, and the side ear 6 is provided with countersunk holes to accommodate the screws.

[0027] Working principle: When in use, the workpiece is placed between the two clamping plates 24. Then, the electromagnet 19 is energized, the clamping plates 24 extend and clamp the workpiece. At this time, the second electric cylinder 18 is energized, the two cover plates 5 approach the workpiece and block the non-detection area. Then, the first electric cylinder 7 is activated, the telescopic rod 8 retracts, the lifting plate 11 and the components on it are lowered, and the cover plates 5 cover the upper part of the U-shaped groove 2, so that the image sensor 3 is in a relatively closed environment, reducing the interference of external ambient light. Finally, the supplementary light strip 4 is activated, and the image sensor 3 takes a picture.

[0028] If the upper surface of the workpiece also needs to be inspected, the second electric cylinder 18 is energized, the workpiece is reset upwards, and then the drive motor 20 is started. Through the transmission on the first pulley 22, the synchronous belt 21 and the second pulley 23, the electromagnet 19 is rotated, and the components directly or indirectly connected to it also rotate, that is, the workpiece rotates 180°. Finally, the second electric cylinder 18 is energized again, the workpiece is lowered and photographed.

[0029] The technical means disclosed in this utility model are not limited to the technical means disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features.

Claims

1. A visual inspection device for reducing the error rate of visual inspection, characterized in that, It includes two mirror-mounted side support plates (1), with a U-shaped groove (2) fixedly connected to the lower part of the side support plate (1), an image sensor (3) fixedly connected inside the U-shaped groove (2), and supplementary light strips (4) fixedly connected to both sides of the image sensor (3). A lifting plate (11) is slidably provided on the upper part of the side support plate (1). A plurality of first connecting ears (12) are provided on the lifting plate (11). A first electric cylinder (7) is fixedly connected to the side wall of the side support plate (1). A telescopic rod (8) is provided extending upward from the first electric cylinder (7), and the end of the telescopic rod (8) is fixedly connected to one of the first connecting ears (12). A circular thin shell (10) is fixedly connected to the lifting plate (11), and an electromagnet (19) is fixedly connected inside the circular thin shell (10). A clamping plate (24) is fixedly connected to the output end of the electromagnet (19). The circular thin shell (10) is provided with a second electric cylinder (18) inside, and a connecting rod (17) extends from the inside of the second electric cylinder (18). A mask (5) is fixedly connected to the connecting rod (17), and an opening is provided on the mask (5).

2. The visual inspection device for reducing the visual inspection error rate according to claim 1, characterized in that: The side support plate (1) is provided with a second connecting ear (13), and a guide rod (15) is fixedly connected to the second connecting ear (13). The guide rod (15) passes through one of the first connecting ears (12). A spring (14) is inserted through the guide rod (15), and one end of the spring (14) abuts against the first connecting ear (12) and the other end abuts against the second connecting ear (13).

3. The visual inspection device for reducing the visual inspection error rate according to claim 1, characterized in that: The second electric cylinder (18) has a screw inside, and the end of the connecting rod (17) is threaded onto the screw.

4. The visual inspection device for reducing the visual inspection error rate according to claim 1, characterized in that: One end of the circular thin shell (10) is provided with a sealing plate (9). The output ends of the connecting rod (17) and the electromagnet (19) both pass through the sealing plate (9). The electromagnet (19) and the second electric cylinder (18) are both fixedly connected to the sealing plate (9).

5. A visual inspection device for reducing visual inspection error rate according to claim 4, characterized in that: The electromagnet (19) is rotatably connected inside the circular thin shell (10). A drive motor (20) is fixedly connected inside the circular thin shell (10). A first pulley (22) is fixedly connected to the output end of the drive motor (20). A second pulley (23) is fixedly connected to the side wall of the electromagnet (19). A synchronous belt (21) is sleeved on the first pulley (22) and the second pulley (23).

6. The visual inspection device for reducing the visual inspection error rate according to claim 1, characterized in that: A side shell (6) is fixedly connected to the side support plate (1), and a third connecting ear (16) is provided on the side support plate (1). The side shell (6) is fixedly connected to the third connecting ear (16).

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