CCD (Charge Coupled Device) machine vision detection equipment

Abstract

The invention provides CCD (Charge Coupled Device) machine vision detection equipment which comprises a base, a feeding vibration disc, a guide frame, an optical fiber bracket, a side surface detection camera, a length and width detection camera, a top surface appearance detection camera, an outer side height detection camera, an upper appearance detection camera, an inner height detection camera, a lower appearance detection camera and a discharging channel are circumferentially and uniformly distributed by taking the central axis of the material turntable as the center; wherein the side surface detection cameras are four groups of prism cameras distributed along quadrant points of the material position, and a picture is reflected through prisms, so that the vertical arrangement of the side surface detection cameras and 360-degree omnibearing product detection are realized, the effects of reducing the occupied space and improving the shooting efficiency are achieved, and a good development prospect is achieved.

Description

Technical Field

[0001] This invention relates to the field of visual inspection, specifically to a CCD machine vision inspection device. Background Technology

[0002] A magnetic core is a sintered magnetic metal oxide composed of various iron oxide mixtures. For example, manganese-zinc ferrite and nickel-zinc ferrite are typical core materials. Manganese-zinc ferrite features high permeability and high magnetic flux density, along with low losses. Nickel-zinc ferrite exhibits extremely high impedance and low permeability (less than a few hundred). Ferrite cores are used in coils and transformers in various electronic devices.

[0003] With the development of artificial intelligence, higher and stricter precision inspection requirements have been placed on magnetic core quality to prevent unqualified products from reaching upstream customers. Currently, most enterprises use CCD machine vision inspection equipment to inspect the dimensions of delicate parts in production, which uses CCD images to inspect products. However, general CCD machine vision inspection equipment cannot perform 360-degree all-round inspection of delicate parts, and its accuracy in detecting defects is insufficient.

[0004] To address this, this patent application proposes a 360-degree omnidirectional artificial intelligence deep learning CCD machine vision inspection device, which solves the problems of general CCD inspection not being able to cover all angles and having insufficient accuracy in defect detection. Summary of the Invention

[0005] The purpose of this invention is to provide a 360-degree omnidirectional artificial intelligence deep learning CCD machine vision inspection device.

[0006] To achieve the above objectives, the present invention provides the following technical solution: A CCD machine vision inspection device includes a base, a material turntable is set in the center of the base, and a feeding vibrating plate, a guide frame, an optical fiber support, a side inspection camera, a length and width inspection camera, a top surface appearance inspection camera, an outer height inspection camera, an upper appearance inspection camera, an inner height inspection camera, a lower appearance inspection camera, and a discharge channel are evenly distributed in a circle around the central axis of the material turntable. The side inspection camera is a set of four prism cameras distributed along the quadrant points of the material position.

[0007] As a further aspect of the present invention, the feeding vibratory feeder is made of aluminum.

[0008] As a further aspect of the present invention: the material turntable is a glass turntable.

[0009] As a further aspect of the present invention: each detection camera has a base plate located on the other side of the material position on the material turntable, in the shooting direction of each camera.

[0010] As a further aspect of the present invention, the drive motor is a direct-drive (DD) motor.

[0011] As a further aspect of the present invention, a high-pressure air blowing mechanism controlled by a high-speed solenoid valve is provided at the discharge channel position.

[0012] As a further aspect of the present invention: the side detection camera includes a mounting bracket, the bottom of which is connected to a sling bracket, and four sets of vertically downward-facing camera units are distributed circumferentially along the axis of rotation on the sling bracket. A reflecting prism is installed at the bottom of the sling bracket corresponding to the camera unit and facing the axis.

[0013] As a further aspect of the present invention: the hoisting bracket is connected to the hoisting bracket via a fixed slider that slides vertically on the mounting bracket, and the reflecting prism is hinged to the bottom of the hoisting bracket via an angle bracket.

[0014] As a further embodiment of the present invention: the hoisting bracket and the fixed slider are rotatably connected in the vertical direction, a drive motor is horizontally arranged on the fixed slider, and an eccentric block is connected to the output end of the drive motor. The eccentric block and the hoisting bracket structure are in contact and driven.

[0015] As a further aspect of the present invention: an illumination bracket is fixedly connected to the mounting bracket on the outer side of the bottom reflective prism mounting position of the hoisting bracket, and an illumination lamp is provided on the illumination bracket at the position corresponding to both sides of the reflective prism. Beneficial effects

[0016] 1. The material turntable of this invention has a feeding vibrating plate, a guide frame, an optical fiber support, a side inspection camera, a length and width inspection camera, a top appearance inspection camera, an outer height inspection camera, an upper appearance inspection camera, an inner height inspection camera, a lower appearance inspection camera, and a discharge channel evenly distributed around its central axis. The side inspection camera consists of four sets of prism cameras distributed along the quadrant points of the material position. The images are reflected by the prisms, thereby realizing the vertical setting of the side inspection camera and 360-degree all-round inspection of the product, which reduces the footprint and improves the shooting efficiency.

[0017] 2. The hoisting bracket of the present invention is connected to the hoisting bracket via a fixed slider that slides vertically on the mounting bracket. The reflecting prism is hinged to the bottom of the hoisting bracket via an angle bracket, so that the angle of the reflecting prism and the overall height of the hoisting bracket are adjustable. When dealing with materials of different heights, the passage of materials under the hoisting bracket can be guaranteed. The angle of the camera unit can also be adjusted by adjusting the angle of the reflecting prism so that the shooting angle of the camera unit is accurately directed toward the side of the material after reflection.

[0018] 3. In this invention, the hoisting bracket and the fixed slider are rotatably connected in the vertical direction. A drive motor is horizontally arranged on the fixed slider. An eccentric block is connected to the output end of the drive motor. The eccentric block and the hoisting bracket structure are driven by abutment. Thus, through the stepping control of the drive motor, the hoisting bracket can be driven to deflect within a range of circumferential angles to adjust the shooting angle. This can address potential blind spots when shooting irregularly shaped parts or improve the accuracy of visual analysis by performing multiple comparisons after changing the shooting angle. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0020] Figure 2 This is a schematic diagram of the distribution of the detection cameras according to the present invention.

[0021] Figure 3 This is a schematic diagram showing the installation positions of the detection camera and the material turntable according to the present invention.

[0022] Figure 4 This is a schematic diagram of the material discharge channel distribution of the present invention.

[0023] Figure 5 This is a schematic diagram of the side detection camera structure of the present invention.

[0024] Figure 6 This is a schematic diagram of the hoisting support structure of the present invention.

[0025] Figure 7 This is a schematic diagram of the installation of the reflective prism of the present invention.

[0026] Figure 8 This is a schematic diagram of the lighting bracket structure of the present invention.

[0027] Figure 1-8 In the middle section: 1. Base; 2. Drive motor; 3. Material turntable; 4. Feeding vibratory plate; 5. Guide frame; 6. Fiber optic bracket; 7. Side inspection camera; 71. Mounting bracket; 72. Fixed slider; 73. Lifting bracket; 74. Camera unit; 75. Angle bracket; 76. Reflecting prism; 77. Lighting bracket; 78. Drive motor; 79. Base plate; 8. Length and width inspection camera; 9. Top surface appearance inspection camera; 10. Outer side height inspection camera; 11. Upper appearance inspection camera; 12. Inner height inspection camera; 13. Lower appearance inspection camera; 14. Discharge channel. Detailed Implementation

[0028] The following description, in conjunction with the accompanying drawings, will illustrate the present invention. Figures 1-8 The specific technical solutions of the present invention will be clearly and completely described. Please see Figures 1-8 , Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present invention; Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the detection camera distribution according to the present invention; Figure 3 This is a schematic diagram showing the installation positions of the detection camera and the material turntable according to the present invention; Figure 4 This is a schematic diagram of the material discharge channel distribution of the present invention; Figure 5 This is a schematic diagram of the side detection camera structure of the present invention; Figure 6 This is a schematic diagram of the hoisting support structure of the present invention; Figure 7 This is a schematic diagram of the installation of the reflecting prism of the present invention; Figure 8 This is a schematic diagram of the lighting bracket structure of the present invention.

[0029] This embodiment provides a CCD machine vision inspection device, including a base 1, a material turntable 3 is set in the center of the base 1, and a feeding vibrating plate 4, a guide frame 5, an optical fiber support 6, a side inspection camera 7, a length and width inspection camera 8, a top surface appearance inspection camera 9, an outer height inspection camera 10, an upper appearance inspection camera 11, an inner height inspection camera 12, a lower appearance inspection camera 13 and a discharge channel 14 are evenly distributed around the central axis of the material turntable 3. The side inspection camera 7 is a set of four prism cameras distributed along the quadrant points of the material position. By reflecting the image through a prism, the side detection camera 7 is vertically positioned, which reduces the footprint and improves shooting efficiency.

[0030] Among them, the feeding vibratory plate uses an aluminum vibratory plate to straighten the material and transfer it to the glass detection plate. The aluminum vibratory plate is small in size, has a small vibration amplitude, and has high control precision.

[0031] Among them, the material turntable 3 is a glass turntable. The transparent glass turntable avoids the need to flip the material and allows the material to be photographed directly from the other side, reducing the number of steps.

[0032] Specifically, each detection camera has a base plate 79 located on the other side of the material position on the material turntable 3, which enhances the shooting effect and improves the resolution by contrasting with the base plate 79.

[0033] Among them, drive motor 2 is a direct-drive (DD) motor, which rotates the glass turntable. Because of the integrated structure of the direct-drive motor, the load can be directly mounted on the mounting surface of the DD motor, so there is no precision loss between the motor and the worktable, thus increasing the accuracy of the equipment. Because there is no mechanical structure of a reducer, there is no energy loss like that of traditional AC servos.

[0034] The discharge channel 14 is equipped with a high-pressure air blowing mechanism controlled by a high-speed solenoid valve. The high-speed solenoid valve controls the airflow to blow the materials into different storage boxes according to categories such as OK, height NG, length and width NG, and defect NG.

[0035] The side detection camera 7 includes a mounting bracket 71, a hanging bracket 73 connected to the bottom of the mounting bracket 71, and four sets of vertically downward-facing camera units 74 distributed circumferentially along the axis of rotation on the hanging bracket 73. A reflecting prism 76 is installed at the bottom of the hanging bracket 73 corresponding to the camera unit 74, facing the axis. By refracting the shooting direction through a prism, the side surface of the material can be photographed. The vertically arranged camera units 74 are arranged circumferentially along the axis, which greatly reduces the space occupied by the equipment used to arrange the side with the largest shooting angle, making the overall layout more compact and eliminating the need to rotate the material.

[0036] Specifically, the hoisting bracket 73 is connected to the hoisting bracket 73 via a fixed slider 72 that slides vertically on the mounting bracket 71, while the reflecting prism 76 is hinged to the bottom of the hoisting bracket 73 via an angle bracket 75. This allows the angle of the reflecting prism 76 and the overall height of the lifting bracket 73 to be adjustable. When dealing with materials of different heights, it ensures the passage of materials under the lifting bracket 73. It also allows the camera unit 74 to accurately shoot towards the side of the material after reflection by adjusting the angle of the reflecting prism 76.

[0037] Specifically, an illumination bracket 77 is fixedly connected to the mounting bracket 71 on the outer side of the installation position of the bottom reflective prism 76 of the hoisting bracket 73. Illumination lamps are set on the illumination bracket 77 corresponding to the positions on both sides of the reflective prism 76 to provide supplementary lighting for the densely distributed side inspection stations. By using the switching of illumination lamps at different angles, multi-angle light source control can be achieved. Through comparison of multiple sets of photos, the accuracy of visual inspection can be further improved.

[0038] Furthermore, the lifting bracket 73 is rotatably connected to the fixed slider 72 in the vertical direction. A drive motor 78 is horizontally mounted on the fixed slider 72. An eccentric block is connected to the output end of the drive motor 78. The eccentric block and the lifting bracket 73 are driven by structural contact. Thus, the stepping control of the drive motor 78 can drive the lifting bracket 73 to deflect within a range of circumferential angles, adjust the shooting angle, and thus deal with possible blind spots in shooting when dealing with irregular parts, or improve the accuracy of visual analysis by changing the shooting angle and performing multiple comparisons.

[0039] When implementing the technical solution described in this embodiment, the material is aligned by an aluminum feeding vibrating plate 4 and transferred to a glass material turntable 3. After passing through the guide frame 5, it passes sequentially along a fixed trajectory under the drive of the material turntable 3, including a side inspection camera 7, a length and width inspection camera 8, a top surface appearance inspection camera 9, an outer height inspection camera 10, an upper appearance inspection camera 11, an inner height inspection camera 12, and a lower appearance inspection camera 13. Visual analysis of the surface data of the material is performed, and the industrial control system classifies it as OK, height NG, length and width NG, defect NG, etc. When it reaches the discharge channel 14, the high-pressure air blowing mechanism controlled by the high-speed solenoid valve blows the material into different storage boxes according to the classification of OK, height NG, length and width NG, defect NG, etc.

Claims

1. A CCD machine vision inspection device, characterized in that, include: The base (1) has a material turntable (3) in the center. The material turntable (3) is evenly distributed in a circle around the central axis of the material turntable (3), including a feeding vibrating plate (4), a guide frame (5), an optical fiber bracket (6), a side inspection camera (7), a length and width inspection camera (8), a top surface appearance inspection camera (9), an outer height inspection camera (10), an upper appearance inspection camera (11), an inner height inspection camera (12), a lower appearance inspection camera (13), and a discharge channel (14). The side detection camera (7) consists of four sets of prism cameras distributed along the quadrant points of the material position.

2. The CCD machine vision inspection device according to claim 1, characterized in that: The feeding vibratory plate is made of aluminum.

3. The CCD machine vision inspection device according to claim 1, characterized in that: The material turntable (3) is a glass turntable.

4. The CCD machine vision inspection device according to claim 3, characterized in that: Each of the detection cameras has a base plate (79) located on the other side of the material position on the material turntable (3) in the shooting direction.

5. A CCD machine vision inspection device according to claim 1, characterized in that: The drive motor (2) is a direct-drive (DD) motor.

6. The CCD machine vision inspection device according to claim 1, characterized in that: The discharge channel (14) is equipped with a high-pressure air blowing mechanism controlled by a high-speed solenoid valve.

7. A CCD machine vision inspection device according to claim 1, characterized in that: The side detection camera (7) includes a mounting bracket (71), and a hanging bracket (73) is connected to the bottom of the mounting bracket (71). Four sets of vertically downward-facing camera units (74) are distributed circumferentially along the axis of rotation on the hanging bracket (73). A reflecting prism (76) is installed at the bottom of the hanging bracket (73) corresponding to the camera unit (74) and facing the axis.

8. A CCD machine vision inspection device according to claim 7, characterized in that: The hoisting bracket (73) is connected to the hoisting bracket (73) via a fixed slider (72) that slides vertically on the mounting bracket (71), and the reflecting prism (76) is hinged to the bottom of the hoisting bracket (73) via an angle bracket (75).

9. A CCD machine vision inspection device according to claim 8, characterized in that: The hoisting bracket (73) is rotatably connected to the fixed slider (72) in the vertical direction. A drive motor (78) is horizontally arranged on the fixed slider (72). An eccentric block is connected to the output end of the drive motor (78). The eccentric block and the hoisting bracket (73) are in contact and driven.

10. A CCD machine vision inspection device according to claim 7, characterized in that: The bottom reflective prism (76) of the hoisting bracket (73) has an illumination bracket (77) fixedly connected to the mounting bracket (71) on the outer side of the mounting position. The illumination bracket (77) is provided with illumination lamps on both sides of the reflective prism (76).

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