JPH0533329B2 - - Google Patents

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 raw material to be separated and the color of the colorimetric reflector, if the color tone of the raw material to be separated changes, the colorimetric reflector must be replaced with one with a different brightness. It won't happen. 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 will be explained based on one embodiment shown in the drawings.

Reference numeral 1 denotes a sorting raw material supply device such as an electromagnetic feeder that continuously drops and supplies sorted raw materials; 2 denotes a falling guide means that aligns the sorted raw materials supplied from the supply device 1 in a line and drops them in a fixed trajectory; V
It is made by vertically tilting a gutter plate on which a large number of grooves in the shape of a letter or U 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 arranged for each falling trajectory of the sorted raw material falling from each groove of the falling guide means 2, and a sorting mechanism is arranged on one side with each falling trajectory sandwiching a photoelectric conversion element 3 having a sensitivity characteristic substantially equal to the visibility characteristic. 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 not to block the light from the light source 4 behind it.
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,
A transparent color plate with a color similar to the color of the sorting material to be separated is provided on its surface, and an opaque color plate close to white is superimposed below the color plate. Such a colorimetric reflector 5 has a shaft 6 fixed to its back surface.
is rotatably supported, and by rotating the shaft 6, the colorimetric reflector 5 is rotated, and its angle with respect to the light source 4 can be adjusted.

Reference numeral 7 indicates a high-pressure air injection solenoid 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's summery. 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 its 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 is changed. When the colorimetric 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 sorting material to be separated changes, by appropriately adjusting the angle of the colorimeter reflector 5, the photoelectric conversion element 3 This makes it possible to maintain an optimal detection state.

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 dealt with 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 because 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 the shaft, and 7 is the solenoid valve for high-pressure air injection.

Claims (1)

[Claims] 1. A falling guide means 2 is provided below the sorted raw material supply device 1 to align the sorted raw materials supplied from the device 1 in a line and drop them on a fixed trajectory, and to control the fall trajectory of the sorted raw materials under the falling guide means 2. A photoelectric conversion element 3 having sensitivity characteristics substantially equal to the visibility characteristics on one side and a light source 4 that emits light matching the hue of the sorting material to be separated are provided on one side, and a rotating colorimetric reflector 5 is provided on the other side. A high-pressure air injection solenoid valve 7, which is provided so that the angle with respect to the light source 4 can be adjusted and is activated based on electrical changes in the photoelectric conversion element 3, is placed on the falling trajectory. A color sorting device characterized in that it is provided in the direction of the user.