JPS61162725A - Color selector - Google Patents

Abstract

PURPOSE:To eliminate the work of exchanging a colorimetric reflector, by adjusting the angle thereof for changes in the color tone of selection material to be separated. CONSTITUTION:A colorimetric reflector 5 is provided rotatably in a selection mechanism and the set angle thereof is changed by the operation of a lever 8 to vary the angle to a light source 4 facing it sandwiching an orbit of dropping selection material: When the colorimetric reflector 5 is at the right angle to the light from the light source 4, the intensity of illumination reaches the maximum thereof and reduces as the colorimetric reflector 5 is inclined. Thus, the brightness of the colorimetric reflector 5 can be varied and when the color tone of the selection material to be separated changes, the optimum detection state of a photoelectric conversion element 3 can be maintained by adjusting the angle of the colorimetric reflector 5 properly.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a color sorting device for separating and sorting objects of the same color from a mixture of objects of different colors.

This type of conventional device consists of a light source, a photoelectric conversion element, and a colorimetric reflector that are placed on both sides of a falling trajectory under a falling guide means that aligns the sorted raw materials supplied from the sorted raw material supply device in a line and drops them on a fixed trajectory. Identification and sorting is performed by a sorting mechanism consisting of a plate. When identifying by comparing the color of the sorted raw material and the color of the colorimetric reflector, if the color tone of the sorted raw material to be separated changes, the colorimetric reflector must be replaced with one of different brightness and darkness. . As described above, in the conventional apparatus, if the color tone of the sorting raw materials to be separated changes, the colorimetric reflector must be replaced, which requires a great deal of effort when a large number of sorting mechanisms are arranged in parallel.

An object of the present invention is to make it unnecessary to replace the colorimetric reflector even if the color tone of the raw materials to be sorted changes, thereby making it possible to carry out the sorting work efficiently and conveniently.

Next, the present invention is illustrated in the drawings, II! I will explain based on Mr. s.

Reference numeral 1 denotes a sorting raw material supply device such as an electromagnetic feeder that continuously drops and supplies the sorted raw materials, and 2 denotes a falling guide means that aligns the sorted raw materials supplied from the supply device 1 in a line and allows them to fall in a fixed trajectory. It is made up of a vertically slanted gutter plate on which many 7-shaped or U-shaped grooves are arranged side by side.

In this embodiment, a case is shown in which the sorting materials are dropped in a large number of rows and sorted, but a single row may also be used.

A sorting mechanism is disposed for each falling trajectory of the sorted raw material falling from the guide of the falling guiding means 2, and it includes a photoelectric conversion element 3 having a sensitivity characteristic substantially equal to the visibility characteristic and a photoelectric conversion element 3 on one side across each falling trajectory. A light source 4 that emits light that matches the hue of the raw material to be separated is placed behind it, and a colorimetric reflector 5 is placed on the other side. A phototube, a photoconductive element, or the like is used for the photoelectric conversion element 3, and a size is selected so as to block the light from the front and rear light sources 4. As the light source 4, a fluorescent lamp installed horizontally is used, and the color of the emitted light is matched to the color of the raw materials to be separated among the raw materials to be sorted, for example, when separating yellow materials from the raw materials to be sorted. A yellow fluorescent lamp is used.

The colorimetric reflector 5 provided opposite the light source 4 has a width sufficient for the field of view of the photoelectric conversion element 3, and a transparent color plate with a color similar to the color of the sorting raw material to be separated is provided on its surface. It is constructed by superimposing an opaque, almost white colored plate under the colored plate. Such a colorimetric reflector 5 is rotatably supported by a shaft 6 fixed to the back surface thereof, and by rotating the shaft 6, the colorimetric reflector 5 is rotated so that the angle with respect to the light source 4 can be adjusted. It has become.

Reference numeral 7 indicates a high-pressure air injection dragon valve that injects high-pressure air toward the falling trajectory of the sorted raw materials, and is operated based on the electrical change of the photoelectric conversion element 3 when the sorted raw materials to be separated are detected. It has become. 8 is a lever, and 9 is a scale plate that displays the angle.

In the present invention, the colorimetric reflector 5 in the sorting mechanism is rotatably provided, and by changing the installation angle by operating the lever 8, the angle with respect to the light source 4 facing across the falling trajectory of the sorting raw material changes, and the colorimetric reflector 5 is rotatably provided. When the reflector 5 is perpendicular to the light from the light source 4, the illuminance is maximum, and as the colorimetric reflector 5 is tilted, the illuminance decreases. In this way, it is possible to change the brightness of the colorimetric reflector 5, and when the color tone of the sorted raw material to be separated changes, the angle of the colorimetric reflector 5 can be appropriately adjusted to optimize the photoelectric conversion element 3. This allows the detection state to be maintained.

As described above, according to the present invention, even if the color tone of the sorted raw materials to be separated changes, it can be handled by adjusting the angle of the colorimetric reflector, and there is no need to replace the colorimetric reflector as in the past. This makes the sorting work very convenient and efficient.

This is a colorimetric reflector that can be used as a colorimetric reflector if an appropriate size is used when sorting materials are dropped into many rows from a falling guide means and a sorting mechanism is installed on each falling trajectory. This is particularly advantageous since it can accommodate all sorting mechanisms.

[Brief explanation of the drawing]

FIG. 1 shows a side view, and FIG. 2 shows a perspective view of the drop guiding means. 1 is a sorting raw material supply device 2 is a falling guide means 3 is a photoelectric conversion element 4 is a light source 5 is a colorimetric reflector 6 is a shaft 7 is a solenoid valve for high-pressure air injection

Claims (1)

[Claims] A fall guide means (2) is provided below the sorted raw material supply device (1) for arranging the sorted raw materials supplied from the device (1) in a line and allowing them to fall on a fixed trajectory.
A photoelectric conversion element (3) having a sensitivity characteristic substantially equal to the visibility characteristic on one side across the falling trajectory of the sorted raw material at the bottom, and a light source (4) that emits light matching the hue of the sorted raw material to be separated behind it. and a colorimetric reflector (5) is rotatably provided on the other side so that the angle with respect to the light source (4) can be adjusted, and the photoelectric conversion element (3)
A color sorting device comprising: a high-pressure air injection solenoid valve (7) that is operated based on an electrical change in the falling trajectory;