A surface defect detection device that avoids illumination reflection

Abstract

This utility model discloses a surface defect detection device that avoids glare from lighting, relating to the technical field of detection devices. Addressing the problem in existing technologies where light sources produce strong glare (highlights) on product surfaces, significantly impacting subsequent image processing and drastically reducing defect detection rates, the present invention proposes the following solution: A base plate is included, with a fixed shell fixed to the top of the base plate. An lighting mechanism, including a top plate, is housed within the fixed shell. This utility model places a sphere on top of a placement tray, and a light-transmitting plate diffuses the light emitted from the light source, thus dispersing the light and preventing strong light from hitting the sphere's surface. The extension and retraction of a push rod motor drives the lighting mechanism within the fixed shell to rise and fall, and the extension and retraction of an electric push rod changes the distance between the light source and the light-transmitting plate, thereby adjusting the brightness of the light transmitted through the light-transmitting plate.

Description

Technical Field

[0001] This utility model relates to the field of detection device technology, and in particular to a surface defect detection device that can avoid illumination reflection. Background Technology

[0002] The rapid development of the manufacturing industry has placed higher demands on product inspection. Traditional manual methods can no longer meet the requirements of high-precision, rapid, and even real-time dynamic inspection of large batches of products. Machine vision technology, which uses digital images as a means of acquiring information and is closely integrated with computer graphics, automation technology, and other related fields, is well-suited for defect detection on product surfaces.

[0003] Currently, most surface defects in industrial products include dents, streaks, cracks, fissures, and discoloration. The light source in typical vision inspection systems often produces strong reflections on the product surface, creating highlights. This significantly impacts subsequent image processing, greatly reducing the defect detection rate. Utility Model Content

[0004] In view of the shortcomings of the prior art, this utility model provides a surface defect detection device that can avoid illumination reflection. It overcomes the shortcomings of the prior art and effectively solves the problem that the light source will produce strong reflection on the product surface, i.e., the highlight part. This problem has a great impact on the subsequent image process and will greatly reduce the defect detection rate.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A surface defect detection device that avoids glare from lighting includes a base plate, a fixed shell fixed to the top of the base plate, and an lighting mechanism inside the fixed shell. The lighting mechanism includes a top plate, fixed rods fixed to the four bottom corners of the top plate, mounting frames fixed to the four bottom corners of the fixed rods, a lamp plate installed in the mounting frame, an electric push rod fixed to one bottom end of the mounting frame, and a light-transmitting plate fixed to the bottom of the electric push rod. A placement plate is provided below the lighting mechanism, and detection probes are provided on both sides of the placement plate.

[0007] Lift the cover plate and place the sphere on top of the placement plate. The light emitted by the light plate is diffused by the light-transmitting plate, thus dispersing the light and preventing strong light from shining on the surface of the sphere. The extension and retraction of the push rod motor drives the lighting mechanism inside the fixed shell to rise and fall, and the extension and retraction of the electric push rod changes the distance between the light plate and the light-transmitting plate, thereby adjusting the brightness of the light passing through the light-transmitting plate. In conjunction with the servo motor driving the rotating rod through the meshing gears, the sphere placed on the placement plate is rotated through the placement plate fixed to the top of the rotating rod, so that the detection probes on both sides can detect the surface of the sphere.

[0008] Preferably, the front sides of the fixed shell are fixed with sliding grooves, and a cover plate is slidably connected between the two sliding grooves, and a lifting block is fixed on the top of the front side of the cover plate.

[0009] The cover plate is moved by lifting blocks, and the cover plate seals the front of the fixed shell.

[0010] Preferably, a fixing frame is fixed to one top end of the base plate, and a push rod motor is installed on the top inner wall of the fixing frame, with the bottom end of the push rod motor connected and fixed to the top plate.

[0011] The extension and retraction of the push rod motor drives the lighting mechanism inside the fixed housing to rise and fall, thereby increasing the brightness of the lighting inside the fixed housing.

[0012] Preferably, the top of the fixed shell is provided with a through hole, and the through hole is adapted to the bottom outer diameter of the push rod motor.

[0013] The push rod motor is inserted into the fixed housing through a through hole.

[0014] Preferably, the mounting frame has sliding holes at all four bottom corners, and the light-transmitting plate has connecting rods fixed at all four top corners, with the connecting rods slidingly engaging with the sliding holes.

[0015] By interlocking the connecting rod with the mounting frame and extending or retracting the electric push rod, the distance between the lamp panel and the light-transmitting plate is changed, thereby adjusting the brightness of the light passing through the light-transmitting plate.

[0016] Preferably, a diffuse refractive film is adhered to the top of the light-transmitting plate.

[0017] The diffuse refraction film, when bonded, allows for diffuse refraction of the light emitted from the lamp panel.

[0018] Preferably, a rotating rod is fixed to the bottom of the placement tray, and a servo motor mounted on the top of the base plate is provided on one side of the rotating rod. The output shaft of the servo motor and the rod wall of the rotating rod are both fitted with meshing gears.

[0019] A servo motor drives a rotating rod to rotate via meshing gears, which in turn drives a ball placed on a placement plate fixed to the top of the rotating rod to rotate.

[0020] The beneficial effects of this utility model are as follows:

[0021] By placing the sphere on top of the placement plate, the light emitted by the lamp panel is diffused and refracted by the light-transmitting plate, thus dispersing the light and preventing strong light from shining on the surface of the sphere. The extension and retraction of the push rod motor drives the lighting mechanism inside the fixed shell to rise and fall, and the extension and retraction of the electric push rod changes the distance between the lamp panel and the light-transmitting plate, thereby adjusting the brightness of the light passing through the light-transmitting plate. This effectively solves the problem in the prior art where the light source produces strong reflections on the product surface, i.e., highlights. This problem has a significant impact on subsequent image processing and greatly reduces the defect detection rate. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of a surface defect detection device that can avoid illumination reflection proposed in this utility model.

[0023] Figure 2 This is a schematic diagram of the internal structure of the fixed shell of a surface defect detection device that can avoid illumination reflection proposed in this utility model;

[0024] Figure 3 This is a schematic diagram of the lighting mechanism structure of a surface defect detection device that can avoid lighting reflection proposed in this utility model;

[0025] Figure 4 This is a schematic diagram of the top structure of the base plate of a surface defect detection device that can avoid illumination reflection, as proposed in this utility model.

[0026] In the diagram: 1. Base plate; 2. Fixed shell; 3. Slide groove; 4. Cover plate; 5. Lifting block; 6. Fixing frame; 7. Push rod motor; 8. Lighting mechanism; 9. Top plate; 10. Fixing rod; 11. Mounting frame; 12. Lamp panel; 13. Connecting rod; 14. Light-transmitting plate; 15. Electric push rod; 16. Placement tray; 17. Rotating rod; 18. Servo motor; 19. Detection probe. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0028] Example:

[0029] Reference Figure 1-4A surface defect detection device that can avoid illumination reflection includes a base plate 1, a fixed shell 2 fixed to the top of the base plate 1, an illumination mechanism 8 disposed inside the fixed shell 2, the illumination mechanism 8 including a top plate 9, fixed rods 10 fixed to the four bottom corners of the top plate 9, a mounting frame 11 fixed to the four bottom corners of the fixed rods 10, a lamp plate 12 installed in the mounting frame 11, an electric push rod 15 fixed to one bottom end of the mounting frame 11, and a light-transmitting plate 14 fixed to the bottom of the electric push rod 15. A placement plate 16 is disposed below the illumination mechanism 8, and detection probes 19 are disposed on both sides of the placement plate 16.

[0030] The front sides of the fixed shell 2 are fixed with sliding grooves 3, and a cover plate 4 is slidably connected between the two sliding grooves 3. A lifting block 5 is fixed on the top of the front of the cover plate 4. The cover plate 4 is moved by the lifting block 5 and the cover plate 4 is sealed to the front of the fixed shell 2. A fixed frame 6 is fixed at one end of the top of the bottom plate 1. A push rod motor 7 is installed on the inner wall of the top of the fixed frame 6. The bottom end of the push rod motor 7 is connected and fixed to the top plate 9. The extension and retraction of the push rod motor 7 drives the lighting mechanism 8 inside the fixed shell 2 to rise and fall, thereby improving the brightness of the lighting inside the fixed shell 2. A through hole is opened on the top of the fixed shell 2. The through hole is adapted to the outer diameter of the bottom end of the push rod motor 7. The push rod motor 7 is inserted into the fixed shell 2 through the through hole.

[0031] The mounting frame 11 has sliding holes at its four bottom corners, and the light-transmitting plate 14 has connecting rods 13 fixed at its four top corners. The connecting rods 13 slide with the sliding holes. By inserting the connecting rods 13 into the mounting frame 11 and moving them together with the extension and retraction of the electric push rod 15, the distance between the lamp plate 12 and the light-transmitting plate 14 is changed, thereby adjusting the brightness of the light passing through the light-transmitting plate 14. A diffuse refraction film is attached to the top of the light-transmitting plate 14. The diffuse refraction film can diffusely refract the light emitted by the lamp plate 12.

[0032] A rotating rod 17 is fixed to the bottom of the placement plate 16. A servo motor 18 is installed on the top of the base plate 1 on one side of the rotating rod 17. The output shaft of the servo motor 18 and the rod wall of the rotating rod 17 are both fitted with meshing gears. The servo motor 18 drives the rotating rod 17 to rotate through the meshing gears, which in turn drives the ball placed on the placement plate 16 to rotate through the placement plate 16 fixed to the top of the rotating rod 17.

[0033] Working principle:

[0034] During operation, the cover plate 4 is lifted and the sphere is placed on top of the placement plate 16. The light emitted by the lamp plate is diffused by the light-transmitting plate 14, thereby dispersing the light and preventing strong light from shining on the surface of the sphere. The extension and retraction of the push rod motor 7 drives the lighting mechanism 8 inside the fixed housing 2 to rise and fall, and the extension and retraction of the electric push rod 15 changes the distance between the lamp plate 12 and the light-transmitting plate 14, thereby adjusting the brightness of the light transmitted through the light-transmitting plate 14. In conjunction with the servo motor 18 driving the rotating rod 17 to rotate through the meshing gears, the placement plate 16 fixed to the top of the rotating rod 17 drives the sphere placed on the placement plate 16 to rotate, so that the detection probes 19 on both sides can detect the surface of the sphere.

[0035] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A surface defect detection device that avoids illumination reflection, comprising a base plate (1), characterized in that, The top of the base plate (1) is fixed with a fixed shell (2), and a lighting mechanism (8) is provided inside the fixed shell (2). The lighting mechanism (8) includes a top plate (9), a fixed rod (10) fixed at the bottom four corners of the top plate (9), a mounting frame (11) fixed at the bottom four corners of the fixed rod (10), a lamp plate (12) installed in the mounting frame (11), an electric push rod (15) fixed at one end of the bottom of the mounting frame (11), and a light-transmitting plate (14) fixed at the bottom of the electric push rod (15). A placement plate (16) is provided below the lighting mechanism (8), and detection probes (19) are provided on both sides of the placement plate (16).

2. The surface defect detection device that avoids illumination reflection according to claim 1, characterized in that, The fixed shell (2) has sliding grooves (3) fixed on both sides of the front, and a cover plate (4) is slidably connected between the two sliding grooves (3). A lifting block (5) is fixed on the top of the front of the cover plate (4).

3. The surface defect detection device that avoids illumination reflection according to claim 1, characterized in that, A fixing frame (6) is fixed at one end of the top of the base plate (1), and a push rod motor (7) is installed on the inner wall of the top of the fixing frame (6). The bottom end of the push rod motor (7) is connected and fixed to the top plate (9).

4. The surface defect detection device that avoids illumination reflection according to claim 3, characterized in that, The top of the fixed shell (2) is provided with a through hole, and the through hole is adapted to the bottom outer diameter of the push rod motor (7).

5. A surface defect detection device that avoids illumination reflection according to claim 1, characterized in that, The mounting frame (11) has sliding holes at the bottom four corners, and the light-transmitting plate (14) has connecting rods (13) fixed at the top four corners. The connecting rods (13) and the sliding holes form a sliding fit.

6. The surface defect detection device that avoids illumination reflection according to claim 1, characterized in that, A diffuse refractive film is adhered to the top of the light-transmitting plate (14).

7. A surface defect detection device that avoids illumination reflection according to claim 1, characterized in that, The bottom of the placement plate (16) is fixed with a rotating rod (17), and a servo motor (18) installed on the top of the base plate (1) is provided on one side of the rotating rod (17). The output shaft of the servo motor (18) and the rod wall of the rotating rod (17) are both fitted with meshing gears.

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