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Laser sorting machine based on plane materials and method thereof

A sorting machine and material technology, applied in the field of color sorting machines, can solve the problem of not being recognized and distinguished.

Pending Publication Date: 2022-07-29
ANHUI ZHONGKE OPTIC ELECTRONICS COLOR SORTER MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this solution only collects the diffuse reflection signal of the material, and the imaging effect depends on the diffuse reflection angle of the material. For planar materials with high reflection or low contrast, the optical signal irradiated on it is difficult to be collected by the camera due to the influence of specular reflection, and cannot be captured by the camera. Identification

Method used

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  • Laser sorting machine based on plane materials and method thereof
  • Laser sorting machine based on plane materials and method thereof
  • Laser sorting machine based on plane materials and method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] see Figure 1-2 As shown in the figure, the present invention is a laser sorting machine based on plane materials, including a conveying device 5, a monochromatic laser light source 2, a beam splitting device 3, a first camera assembly 1 for collecting polarization information of the reflected light signal of the material, and a a second camera assembly 4 for collecting scattered / transmitted light intensity information of the material reflective signal;

[0033] The conveying device 5 transports the materials to be sorted forward; the conveying device 5 is a single-channel conveyor belt or a multi-channel conveyor belt.

[0034] The monochromatic laser light source is arranged directly above the conveying device 5, and the monochromatic light source 2 irradiates the material on the conveying device 5 vertically with laser light; the wavelength range of the light source of the monochromatic laser light source 2 is 350-2000 nm; For linear light, the irradiation width of ...

Embodiment 2

[0046] like figure 1 As shown in the figure, the monochromatic laser light source 2 adopts a 650nm monochromatic red laser, which is located 1000mm directly above the conveying device 5, and is placed parallel to the material conveying direction; The first camera assembly 1 is at the same height as the spectroscopic device 3, and is located 100mm to the left of the monochromatic laser light source 2;

[0047]Adjust the position of the monochromatic laser light source 2 so that its irradiation width is 600 mm, and ensure that its irradiation area covers the conveying device 5 .

[0048] The cross-section of the monochromatic laser light source 2 is perpendicular to the surface of the material; the material is transmitted to the irradiation area of ​​the monochromatic laser light source 2 through the conveying device 5, and the polarization information of the material is collected by the first camera component 1. The length, width and height information of the material, scattere...

Embodiment 3

[0050] like figure 2 As shown in the figure, the monochromatic laser light source 2 adopts a 520nm monochromatic green light laser, which is located 1000mm above the conveying device 5, and is placed perpendicular to the falling path of the material; ; The first camera assembly 1 is located 100mm to the left of the monochromatic laser light source 2, and is collinear with the spectroscopic device 3; the second camera assembly 4 and the monochromatic laser light source 2 are placed at the same height and at an angle of 40 degrees.

[0051] The cross-section of the monochromatic laser light source 2 is perpendicular to the surface of the material; the material is transmitted to the irradiation area of ​​the monochromatic laser light source 2 through the conveying device 5, and the polarization information of the material is collected by the first camera component 1. The length, width and height information of the material, scattered / The transmitted light intensity is collecte...

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Abstract

The invention discloses a laser sorting machine based on plane materials and a method of the laser sorting machine. According to the laser sorting machine, a monochromatic light source vertically irradiates laser to the materials on a conveying device; the light splitting device is installed under the single-color laser light source. The light splitting device and the horizontal plane form an included angle of 45 degrees; the first camera assembly is installed on one side of the light splitting device and receives material reflection signals refracted by the light splitting device. The second camera assembly is installed on the other side of the light splitting device and receives diffuse scattering signals of the materials. The light splitting device is arranged to refract reflected light of the material to the first camera assembly, the first camera assembly collects a specular reflection signal of the material, polarization information of the material can be obtained from the specular reflection signal, and therefore the material of the material is recognized; size information including length, width and height of the material can be quickly and accurately obtained; and multi-dimensional sorting of the materials is achieved.

Description

technical field [0001] The invention belongs to the technical field of color sorters, in particular to a laser sorter based on flat materials and a method thereof. Background technique [0002] The common sorting method of color sorter is to distinguish the types of materials according to the different colors of the materials themselves. For materials with similar colors and materials with similar background colors, this method will cause misjudgment. In the patent 201880063704.X, a classification method based on the principle of triangulation is provided. The laser line light source and the camera with an angle are used to obtain the height, scattering and other information of the material. The color is similar but there are differences in height and texture. Materials can be well differentiated. However, this solution only collects the diffuse reflection signal of the material, and the imaging effect depends on the diffuse reflection angle of the material. For flat materi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B07C5/342
CPCB07C5/342
Inventor 李广徐晨晨闫朝民杨逃崔港刘淇禄肖军
Owner ANHUI ZHONGKE OPTIC ELECTRONICS COLOR SORTER MACHINERY