Multi-directional focusing appearance detection device

Abstract

The utility model provides a multidirectional focusing appearance detection device which comprises a conveying line used for conveying products, detection stations are installed on the two sides of the conveying line, a main camera and at least one auxiliary camera with the same focus as the main camera are arranged on each detection station, the main camera is parallel to the side edge of the conveying line, and the auxiliary camera is parallel to the side edge of the conveying line. The auxiliary camera is located beside the main camera and obliquely faces the conveying line. The conveying line conveys the product to the position where the detection station is located, at the moment, the main camera shoots the side edge of the product in parallel so as to obtain surface information of the side edge of the product, and meanwhile, the auxiliary camera shoots the side edge of the product in an inclined mode so as to supplement thickness information of a protruding part and depth information of a sunken part of the side edge of the product to the main camera; the detection precision is improved; the utility model belongs to the technical field of automation equipment.

Description

Technical Field

[0001] The utility model belongs to the technical field of automation equipment, and particularly relates to an appearance detection device with multi-directional focusing. Background Art

[0002] In conventional product appearance detection equipment, a camera parallel to the detected surface of the product is mainly used to take pictures of the product, and then an image processing system is used to identify based on the pictures taken by the camera, so as to determine whether there are defects in the product appearance. Since the camera is parallel to the detected surface of the product, when there are inclined protrusions and depressions on the detected surface of the product, the camera cannot identify the thickness of the protruding part and the depth of the depressed part during the process of taking pictures of the detected surface of the product, resulting in low detection accuracy. Summary of the Utility Model

[0003] The purpose of the utility model is to provide an appearance detection device with multi-directional focusing to solve the technical problems described in the background art.

[0004] The appearance detection device with multi-directional focusing includes a conveyor line for conveying products. Detection stations are installed on both sides of the conveyor line. A main camera and at least one auxiliary camera with the same focus as the main camera are arranged at each detection station. The main camera is parallel to the side of the conveyor line, and the auxiliary camera is located beside the main camera and obliquely faces the conveyor line.

[0005] According to the above technical solution, the utility model achieves the following beneficial effects:

[0006] The conveyor line conveys the product to the position where the detection station is located. At this time, the main camera takes a parallel picture of the side of the product to obtain the surface information of the side of the product. At the same time, the auxiliary camera obliquely takes a picture of the side of the product to supplement the thickness information of the protruding part and the depth information of the depressed part of the side of the product for the main camera, thereby improving the detection accuracy.

[0007] In order to further optimize the above technical solution, one or more of the following embodiments can be optionally combined without conflict.

[0008] In some embodiments, a distance adjustment screw module is installed at the detection station. The distance adjustment screw module drives a mounting frame that can approach or move away from the conveyor line. The main camera and the auxiliary camera are both arranged on the mounting frame;

[0009] According to the above technical solution, the mounting frame can be driven to move by the distance adjustment screw module. The mounting frame drives the main camera and the auxiliary camera to approach or move away from the conveyor line, so as to be able to adjust the positions of the main camera and the auxiliary camera according to products of different sizes or different detection surfaces of the product.

[0010] In some embodiments, a rotating seat is pivotally connected to the mounting bracket, a positioning screw on the mounting bracket is provided on the rotating seat, and the auxiliary camera is mounted on the rotating seat;

[0011] According to the above technical solution, the rotating seat can be rotated to different angles according to different products, different detection surfaces of the products, and different test scenarios, so as to adjust the tilt angle of the auxiliary camera, and the rotating seat is locked to the mounting bracket by the positioning screw to fix the rotating seat at this angle, so as to improve the debugging convenience of the auxiliary camera.

[0012] In some embodiments, a fill light is mounted on the mounting bracket; according to the above technical solution, the main camera and the auxiliary camera can take clearer pictures of the side of the product, thereby further improving the accuracy.

[0013] In some embodiments, a support seat is mounted at the detection station, a slide rail is mounted on the support seat, and a slider that slides on the slide rail is mounted on the mounting bracket;

[0014] According to the above technical solution, the mounting bracket is supported by the support seat, so that the distance adjustment screw rod module can drive the mounting bracket to move more stably and reduce the force on the distance adjustment screw rod module.

[0015] In some embodiments, the main camera and the auxiliary camera are line array cameras; according to the above technical solution, when the product passes between the two detection stations, the side of the product can be photographed without stopping, thereby improving the detection efficiency.

[0016] In some embodiments, the conveyor line includes two conveyor belts for supporting both sides of the product, a displacement screw rod module parallel to the conveyor line is mounted below the conveyor line, the displacement screw rod module drives a displacement frame, a lifting cylinder is mounted on the displacement frame, the lifting cylinder drives a lifting plate, and a top plate that can rise between the two conveyor belts is provided on the lifting plate to lift the product on the conveyor line, and the top plate is located between the two detection stations;

[0017] According to the above technical solution, when the conveyor line transports the product above the top plate, the lifting cylinder drives the lifting plate to rise, the lifting plate drives the top plate to rise, and the product on the conveyor line is lifted. Thereafter, the displacement screw rod module drives the displacement frame to move, and the displacement frame drives the top plate to pass between the two detection stations for the main camera and the auxiliary camera to take pictures and detect the product on the top plate. Therefore, compared with using a conveyor belt to transport the product, the jitter of the product when passing between the two detection stations can be effectively reduced, thereby improving the detection accuracy.

[0018] In some embodiments, a rotating motor is mounted on the lifting plate, and the rotating motor drives the top plate to rotate;

[0019] According to the above technical solution, after the top plate lifts the product on the conveyor line, the top plate can be driven to rotate by a rotating motor, and the rotation of the top plate drives the product to rotate to different angles, so that the main camera and the auxiliary camera can detect multiple sides of the product. Description of the Drawings

[0020] In order to more clearly illustrate the specific embodiments of the present invention, the following will briefly describe the drawings and reference numerals required in the description of the specific embodiments.

[0021] Figure 1 is a schematic structural diagram of the present invention;

[0022] Figure 2 is another schematic structural diagram of the present invention;

[0023] Figure 3 is a schematic structural diagram of the detection station described in the present invention;

[0024] Figure 4 is a top view of the detection station described in the present invention;

[0025] Figure 5 is a schematic structural diagram of the displacement screw rod module described in the present invention.

[0026] Reference Numerals:

[0027] 1, conveyor line; 11, conveyor belt; 2, detection station; 21, support seat; 22, distance adjustment screw rod module; 23, slide rail; 31, mounting bracket; 32, slider; 33, fill light; 34, rotating seat; 35, positioning screw; 41, main camera; 42, auxiliary camera; 51, displacement screw rod module; 52, displacement frame; 53, lifting cylinder; 54, lifting plate; 55, rotating motor; 56, top plate; 6, product. Detailed Description of the Embodiments

[0028] In order to make the purpose, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the specific embodiments and with reference to the accompanying drawings.

[0029] As Figures 1 to 5 shown, this specific embodiment provides a multi-directional focusing appearance detection device, which includes a conveyor line 1 for conveying a product 6, and the conveyor line 1 includes two conveyor belts 11 for supporting both sides of the product 6.

[0030] As Figures 1 to 4As shown in the figure, detection stations 2 are installed on both sides of the conveyor line 1. A support base 21 and an adjustable pitch screw module 22 are installed in each detection station 2. The support base 21 is equipped with a slide rail 23. The adjustable pitch screw module 22 drives an installation frame 31 that can approach or move away from the conveyor line 1. The installation frame 31 is equipped with a slider 32 and a fill light 33. The slider 32 slides on the slide rail 23. A main camera 41 and at least one auxiliary camera 42 are arranged on the installation frame 31. The auxiliary camera 42 and the main camera 41 have the same focus. The main camera 41 and the auxiliary camera 42 are line array cameras, and the main camera 41 is parallel to the side of the conveyor line 1. When there is one auxiliary camera 42 on the installation frame 31, the auxiliary camera 42 is located beside the main camera 41 and is inclined towards the conveyor line 1. When there are two auxiliary cameras 42 on the installation frame 31, the auxiliary cameras 42 are located on both sides of the main camera 41 and are inclined towards the conveyor line 1. The installation frame 31 is axially connected with a rotating seat 34. When the rotating seat 34 rotates to a certain angle on the installation frame 31, the rotating seat 34 can be locked on the installation frame 31 through a positioning screw 35 to fix the rotating seat 34 at this angle. The auxiliary camera 42 is installed on the rotating seat 34. The fill light 33 works in cooperation with the main camera 41 and the auxiliary camera 42.

[0031] As Figure 1 , 2 As shown in FIGS. 4 and 5, a displacement screw module 51 parallel to it is installed below the conveyor line 1. The displacement screw module 51 drives a displacement frame 52. The displacement frame 52 is equipped with a lifting cylinder 53. The lifting cylinder 53 drives a lifting plate 54. The lifting plate 54 is equipped with a rotating motor 55. The rotating motor 55 drives a top plate 56. The top plate 56 can rise from between the two conveyor belts 11 to lift the product 6 on the conveyor line 1. The top plate 56 is located between the two detection stations 2.

[0032] The working process of a multi-directional focusing appearance detection device according to the following specific embodiment is as follows:

[0033] The conveyor line 1 transports the product 6 above the top plate 56; thereafter, the lifting cylinder 53 drives the lifting plate 54 to rise, and the lifting plate 54 drives the top plate 56 to rise, lifting the product 6 on the conveyor line 1. Thereafter, the displacement screw module 51 drives the displacement frame 52 to move, and the displacement frame 52 drives the top plate 56 to pass between the two detection stations 2. At this time, the main camera 41 takes a parallel photo of the side of the product 6 to obtain the surface information of the side of the product 6. At the same time, the auxiliary camera 42 takes a photo of the side of the product 6 obliquely to supplement the main camera 41 with the thickness information of the protruding part and the depth information of the concave part of the side of the product 6; thereafter, the rotating motor 55 drives the top plate 56 to rotate, and the rotation of the top plate 56 drives the product 6 to rotate to different angles; thereafter, the displacement screw module 51 drives the displacement frame 52 to move repeatedly, so that the main camera 41 and the auxiliary camera 42 can take photos of the other side of the product 6; after the main camera 41 and the auxiliary camera 42 complete taking photos of multiple sides of the product 6, the lifting cylinder 53 drives the lifting plate 54 to descend and reset, and the lifting plate 54 drives the top plate 56 to descend and reset, putting the product 6 back on the conveyor line 1; thereafter, the conveyor line 1 sends the product 6 away.

Claims

1. A multi-directional focusing appearance inspection device, comprising a conveyor line (1) for conveying a product (6), with inspection stations (2) installed on both sides of the conveyor line (1), characterized in that: A main camera (41) and at least one auxiliary camera (42) having the same focal point as the main camera (41) are arranged on each of the inspection stations (2); the main camera (41) is parallel to the side of the conveyor line (1); and the auxiliary camera (42) is located beside the main camera (41) and tilted toward the conveyor line (1).

2. The multi-directional focusing appearance inspection device according to claim 1, characterized in that: The inspection station (2) is equipped with a pitch-adjustable screw module (22), and the pitch-adjustable screw module (22) drives a mounting frame (31) that can be moved closer to or farther away from the conveyor line (1), and the main camera (41) and the auxiliary camera (42) are both arranged on the mounting frame (31).

3. The multi-directional focusing appearance inspection device according to claim 2, characterized in that: The upper axis of the mounting frame (31) is connected to a rotating seat (34), the rotating seat (34) is provided with a positioning screw (35) locked on the mounting frame (31), and the auxiliary camera (42) is installed on the rotating seat (34).

4. The multi-directional focusing appearance inspection device according to claim 2, characterized in that: A fill light (33) is installed on the mounting frame (31).

5. The multi-directional focusing appearance inspection device according to claim 2, characterized in that: The detection station (2) is equipped with a support seat (21), the support seat (21) is equipped with a slide rail (23), and the mounting frame (31) is equipped with a slider (32) that slides on the slide rail (23).

6. The multi-directional focusing appearance inspection device according to claim 1, characterized in that: The main camera (41) and the auxiliary camera (42) are line array cameras.

7. A multi-directional focusing appearance inspection device according to any one of claims 1 to 6, characterized in that: The conveyor line (1) comprises two conveyor belts (11) for carrying the two sides of the product (6); a shift screw module (51) parallel to the conveyor line (1) is installed below the conveyor line (1); the shift screw module (51) drives a shift frame (52); the shift frame (52) is installed with a lifting cylinder (53); the lifting cylinder (53) drives a lifting plate (54); a top plate (56) is provided on the lifting plate (54) which can be lifted from between the two conveyor belts (11) to lift the product (6) on the conveyor line (1); the top plate (56) is located between the two inspection stations (2).

8. The multi-directional focusing appearance inspection device according to claim 7, characterized in that: The lifting plate (54) is equipped with a rotating motor (55), and the rotating motor (55) drives the top plate (56) to rotate.

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