Visual inspection device for surface flaws of metal parts

Abstract

The utility model discloses a visual detection device for surface flaws of metal parts, relates to the technical field of detection devices, and aims to solve the problems that in the prior art, related detection tools are manually held by hands, time and labor are wasted, and a large amount of manpower is needed to keep up with the production efficiency of a production line. A fixing frame is fixed to the top of the bottom plate, screw rods are rotationally connected to the inner walls of the two ends of the fixing frame, and adjusting mechanisms are in threaded connection to the rod walls of the screw rods. The device is moved to the position beside a conveying belt of a production line, the height positions of the adjusting mechanism and the detection mechanism are adjusted, the detection mechanism is located right above the conveying belt in cooperation with telescopic adjustment of the push rod motor, and then the detection mechanism is located right above the conveying belt in cooperation with position adjustment of the two movable blocks. And the connection angle between each detection head and the mounting block is adjusted, so that each detection head performs visual detection on the top and each side surface of the metal part conveyed on the conveying belt.

Description

Technical Field

[0001] The utility model relates to the technical field of detection devices, in particular to a visual detection device for surface defects of metal parts. Background Technique

[0002] The detection of metal surface defects usually refers to the use of advanced machine vision detection technology to detect defects such as spots, pits, scratches, and defects on the surface of metal workpieces. Micro-defects always occur on the surface of metal parts during the production, processing or assembly process, and these defects will affect the safety performance of the metal. Therefore, it is very important to detect the micro-defects on the metal surface.

[0003] Visual detection means that the target to be captured is converted into an image signal by a machine vision product and transmitted to a dedicated image processing system. According to the pixel distribution, brightness, color and other information, it is converted into a digital signal; the image system performs various operations on these signals to extract the features of the target, and then controls the on-site equipment actions according to the discrimination results. It is a valuable mechanism for production, assembly or packaging; its characteristics are to improve the flexibility and automation of production, and it is suitable for some dangerous working environments that are not suitable for manual operation or occasions where manual vision is difficult to meet the requirements.

[0004] At present, most of the methods for detecting micro-defects on the metal surface still rely on manual operation of relevant detection tools, which is time-consuming and laborious, and requires a large amount of manpower to keep up with the production efficiency of the production line. Content of the Utility Model

[0005] Aiming at the deficiencies of the prior art, the utility model provides a visual detection device for surface defects of metal parts, which overcomes the deficiencies of the prior art and effectively solves the problems in the prior art that manual operation of relevant detection tools is time-consuming and laborious, and a large amount of manpower is required to keep up with the production efficiency of the production line.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0007] A visual detection device for surface defects of metal parts includes a bottom plate. A fixing frame is fixed on the top of the bottom plate, and screw rods are rotatably connected to the inner walls at both ends of the fixing frame. An adjusting mechanism is screwed on the rod wall of the screw rod, and one end of the adjusting mechanism is connected to a detection mechanism. The adjusting mechanism includes a T-shaped block, a push rod motor fixed at one end of the T-shaped block, a connecting plate fixed at one end of the push rod motor, and auxiliary rods fixed at both ends of the outer wall on one side of the connecting plate. The detection mechanism includes a connecting frame, a bidirectional screw rod rotatably connected to the inner walls at both ends of the connecting frame, movable blocks screwed at both ends of the rod wall of the bidirectional screw rod, mounting plates fixed on the outer walls on both sides of the connecting frame, and detection components respectively fixed at the bottoms of the movable blocks and the mounting plates.

[0008] Move the device beside the conveyor belt of the production line. Drive the screw rod to rotate through the output shaft of the first servo motor. The rotating screw rod drives the screwed T-shaped block to adjust the height position along the fixed frame. Cooperate with the telescopic adjustment of the push rod motor to adjust the position between the connecting plate and the T-shaped block, so that the position of the detection mechanism is directly above the conveyor belt. Then cooperate with the rotation of the bidirectional screw rod driven by the output shaft of the second servo motor. The rotating bidirectional screw rod drives the two screwed moving blocks to adjust the position, and adjusts the connection angle between each detection head and the mounting block, so that each detection head performs visual inspection on the top and each side of the metal parts conveyed on the conveyor belt.

[0009] Preferably, a first servo motor is installed on the top of the fixed frame, and the output shaft of the first servo motor is fixedly connected to the top end of the screw rod.

[0010] The output shaft of the first servo motor drives the screw rod to rotate.

[0011] Preferably, a threaded hole is opened at one end of the top of the T-shaped block, and the threaded hole forms a threaded fit with the screw rod.

[0012] The rotating screw rod drives the screwed T-shaped block to adjust the height position along the fixed frame.

[0013] Preferably, through holes are opened at both ends of the outer wall of one side of the T-shaped block, and the through holes form a sliding fit with the auxiliary rod.

[0014] The plug-in sliding fit between the auxiliary rod and the T-shaped block improves the stability of the displacement between the connecting plate and the T-shaped block.

[0015] Preferably, internal threaded pipes are symmetrically fixed on the outer wall of one end of the connecting frame, and mounting holes are opened at both ends of the outer wall of one side of the connecting plate. The mounting holes are adapted to the internal threaded pipes, and the internal threaded pipes and the connecting plate are tightly fitted through bolts.

[0016] By inserting the internal threaded pipe into the mounting hole and screwing the bolt with the internal threaded pipe, the connecting frame and the connecting plate are fixedly connected.

[0017] Preferably, a second servo motor is installed on the outer wall of the other end of the connecting frame, and the output shaft of the second servo motor is fixedly connected to one end of the bidirectional screw rod.

[0018] The output shaft of the second servo motor drives the bidirectional screw rod to rotate.

[0019] Preferably, the detection assembly includes a mounting block and detection heads rotatably connected to the inner walls on both sides of the mounting block.

[0020] Visual inspection of the surface of the metal parts is performed by the detection heads at various angles.

[0021] The beneficial effects of the utility model are:

[0022] By moving the device beside the conveyor belt of the production line, the adjustment of the height positions of the adjustment mechanism and the detection mechanism is completed. In cooperation with the telescopic adjustment of the push rod motor, the position of the detection mechanism is directly above the conveyor belt. Then, in cooperation with the adjustment of the positions of the two movable blocks and the adjustment of the connection angles between each detection head and the mounting block, each detection head performs visual inspection on the top and each side of the metal parts conveyed on the conveyor belt, effectively solving the problems in the prior art that manual holding of relevant detection tools is time-consuming and laborious, and a large amount of manpower is required to keep up with the production efficiency of the production line. Description of the Drawings

[0023] Figure 1 It is a schematic diagram of the overall structure of a visual inspection device for surface defects of metal parts proposed by the present utility model;

[0024] Figure 2 It is a schematic diagram of the structure of the adjustment mechanism of a visual inspection device for surface defects of metal parts proposed by the present utility model;

[0025] Figure 3 It is a schematic diagram of the structure of the detection mechanism of a visual inspection device for surface defects of metal parts proposed by the present utility model;

[0026] Figure 4 It is a schematic diagram of the structure of the detection component of a visual inspection device for surface defects of metal parts proposed by the present utility model.

[0027] In the figure: 1, bottom plate; 2, fixing frame; 3, screw; 4, first servo motor; 5, adjustment mechanism; 6, detection mechanism; 7, T-shaped block; 8, push rod motor; 9, connecting plate; 10, auxiliary rod; 11, connecting frame; 12, bidirectional lead screw; 13, second servo motor; 14, internally threaded tube; 15, movable block; 16, mounting plate; 17, detection component; 18, mounting block; 19, detection head. Detailed Embodiments

[0028] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments.

[0029] Embodiment:

[0030] Refer to Figures 1-4, A visual inspection device for surface defects of metal parts, including a bottom plate 1. A fixing frame 2 is fixed on the top of the bottom plate 1. The inner walls at both ends of the fixing frame 2 are rotatably connected with a screw rod 3. An adjusting mechanism 5 is screwed on the rod wall of the screw rod 3. One end of the adjusting mechanism 5 is connected with a detecting mechanism 6. The adjusting mechanism 5 includes a T-shaped block 7. One end of the T-shaped block 7 is fixed with a push rod motor 8. A connecting plate 9 is fixed at one end of the push rod motor 8. Auxiliary rods 10 are fixed at both ends of the outer wall on one side of the connecting plate 9. The detecting mechanism 6 includes a connecting frame 11. A bidirectional lead screw 12 is rotatably connected to the inner walls at both ends of the connecting frame 11. Movable blocks 15 are screwed on both ends of the rod wall of the bidirectional lead screw 12. Mounting plates 16 are fixed on the outer walls on both sides of the connecting frame 11. Detecting components 17 are respectively fixed at the bottoms of the movable blocks 15 and the mounting plates 16;

[0031] A first servo motor 4 is installed on the top of the fixing frame 2. The output shaft of the first servo motor 4 is fixedly connected to the top end of the screw rod 3. The screw rod 3 is driven to rotate by the output shaft of the first servo motor 4. A threaded hole is opened at one end of the top of the T-shaped block 7. The threaded hole forms a threaded fit with the screw rod 3. The rotating screw rod 3 drives the screwed T-shaped block 7 to adjust the height position along the fixing frame 2. Through holes are opened at both ends of the outer wall on one side of the T-shaped block 7. The through holes form a sliding fit with the auxiliary rods 10. The auxiliary rods 10 are in plug-in sliding fit with the T-shaped block 7, improving the stability of the displacement between the connecting plate 9 and the T-shaped block 7;

[0032] Inner threaded tubes 14 are symmetrically fixed on the outer wall at one end of the connecting frame 11. Mounting holes are opened at both ends of the outer wall on one side of the connecting plate 9. The mounting holes are adapted to the inner threaded tubes 14. The inner threaded tubes 14 and the connecting plate 9 are fixedly combined by bolts. By inserting the inner threaded tubes 14 into the mounting holes and screwing the bolts with the inner threaded tubes 14, the connecting frame 11 and the connecting plate 9 are connected and fixed. A second servo motor 13 is installed on the outer wall at the other end of the connecting frame 11. The output shaft of the second servo motor 13 is fixedly connected to one end of the bidirectional lead screw 12. The bidirectional lead screw 12 is driven to rotate by the output shaft of the second servo motor 13. The detecting component 17 includes a mounting block 18. Detecting heads 19 are rotatably connected to the inner walls on both sides of the mounting block 18. The surface of the metal part is visually inspected by the detecting heads 19 at various angles.

[0033] Working principle:

[0034] During use, move the device beside the conveyor belt of the production line. Drive the screw rod 3 to rotate through the output shaft of the first servo motor 4. The rotating screw rod 3 drives the screwed T-shaped block 7 to adjust the height position along the fixed frame 2. Cooperate with the telescopic adjustment of the push rod motor 8 to adjust the position between the connecting plate 9 and the T-shaped block 7, so that the position of the detection mechanism 6 is directly above the conveyor belt. Then, cooperate with the rotation of the bidirectional lead screw 12 driven by the output shaft of the second servo motor 13. The rotating bidirectional lead screw 12 drives the two screwed moving blocks 15 to adjust their positions, and adjusts the connection angles between the respective detection heads 19 and the mounting blocks 18, so that the respective detection heads 19 perform visual inspections on the top and each side of the metal parts conveyed on the conveyor belt.

[0035] The above is only the preferred specific implementation manner of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution of the present utility model and its inventive concept, makes equivalent substitutions or changes, and should be covered within the protection scope of the present utility model.

Claims

1. A device for visually inspecting surface defects of metal parts, comprising a base plate (1), characterized in that: A fixing frame (2) is fixed on the top of the bottom plate (1), and screw rods (3) are rotatably connected to the inner walls of both ends of the fixing frame (2), an adjusting mechanism (5) is screwed to the rod wall of the screw rod (3), and one end of the adjusting mechanism (5) is connected to a detection mechanism (6), the adjusting mechanism (5) comprises a T-shaped block (7), a push rod motor (8) is fixed to one end of the T-shaped block (7), a connecting plate (9) fixed to one end of the push rod motor (8), and an auxiliary rod (10) fixed to both ends of the outer wall of one side of the connecting plate (9); the detection mechanism (6) comprises a connecting frame (11), a bidirectional screw rod (12) rotatably connected to the inner walls of both ends of the connecting frame (11), a movable block (15) screwed to both ends of the rod wall of the bidirectional screw rod (12), a mounting plate (16) fixed to the outer walls of both sides of the connecting frame (11), and a detection component (17) respectively fixed to the bottom of the movable block (15) and the mounting plate (16).

2. A visual inspection device for metal parts surface defects according to claim 1, characterized in that: A first servo motor (4) is installed on the top of the fixing frame (2), and the output shaft of the first servo motor (4) is connected and fixed to the top end of the screw rod (3).

3. A visual inspection device for metal part surface defects according to claim 1, characterized in that: A screw hole is provided at one end of the top of the T-shaped block (7), and the screw hole and the screw rod (3) form a threaded fit.

4. A visual inspection device for metal parts surface defects according to claim 1, characterized in that: Through holes are provided at both ends of the outer wall of one side of the T-shaped block (7), and the through holes form a sliding fit with the auxiliary rod (10).

5. The device for visually inspecting surface defects of metal parts according to claim 1, characterized in that: An internally threaded tube (14) is symmetrically fixed to the outer wall of one end of the connecting frame (11), and mounting holes are provided at both ends of the outer wall of one side of the connecting plate (9), the mounting holes are adapted to the internally threaded tube (14), and the internally threaded tube (14) and the connecting plate (9) are fastened together by bolts.

6. A visual inspection device for metal parts surface defects according to claim 1, characterized in that: A second servo motor (13) is installed on the outer wall of the other end of the connecting frame (11), and the output shaft of the second servo motor (13) is connected and fixed to one end of the bidirectional screw rod (12).

7. A visual inspection device for metal parts surface defects according to claim 1, characterized in that: The detection assembly (17) comprises a mounting block (18) and a detection head (19) rotatably connected to inner walls on both sides of the mounting block (18).

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