JPS6033559B2 - Color sorter lighting system - Google Patents

Description

[Detailed description of the invention] The present invention relates to improvements in lighting devices for color sorters.

This type of color sorting machine allows particles mixed with different colors to flow down from a downflow gutter into a grain collecting cylinder, and a photoelectric sorting chamber consisting of a photoelectric layer and a sorting body is provided in the flow trajectory, and the particles flow down along the trajectory. The light rays emitted from the light source of the photoelectronic layer are irradiated onto the grain east, and the reflected or transmitted light is detected by a light receiving element, the detection is communicated to the control circuit, and the selection actuator is operated according to the detection signal to remove the unusually colored particles. However, depending on the type and properties of the particles to be sorted, there are cases in which different-colored particles are detected by receiving changes in the reflected light beam obtained by irradiating the particle east of the falling trajectory with a receiving element, and cases in which different-color particles are detected by a receiving element. Irradiate the falling grain east from the light source,
In some cases, a light-receiving element is placed on the opposite side of the light source to detect changes in the amount of transmitted light of the falling particle bundle, thereby detecting different-colored particles.

In other words, in the detection of different colored particles such as transparent colored grains or speckled colored particles mixed in polished rice, and colored grains mixed in particles that do not transmit light, such as glutinous rice. , unless a light-receiving element is arranged to receive reflected light, it is not possible to detect particles of different colors;
In detecting different colored particles such as colored grains mixed in brown rice, a method using transmitted light with a large amount of change in received light has excellent detection accuracy.

As a conventional sensing device that electro-optically detects the color tone of granular objects, it is equipped with a transparent cylinder with a relatively large diameter, a slit that can be opened and closed, a floodlight lamp, and a slit that is pre-colored to match the color tone of a good granular object. A structure in which a back plate is provided and a lens tube, a color filter, and a photomultiplier tube are arranged on the optical axis is known as Japanese Patent Publication No. 54-27155. When there is a good granular object or no granular object on the slit, the photomultiplier tube has a back plate that has been colored to match the color tone of the good granular object, so that the standard amount of transmitted light enters the photomultiplier tube. The light intensity and irradiation direction of the lamp cannot be adjusted, and the detection method cannot be switched between transmitted light and reflected light to separate particles of different types and properties.

The present invention has been devised in view of the above-mentioned drawbacks, and includes light-receiving elements placed opposite to each other on both sides of the photovoltaic sorting chamber, and a photovoltaic cell that receives photoelectrons through a particle bundle flowing down a photovoltaic container containing a light source of a photovoltaic layer. A discussion was held in the sorting room, and a light transmission regulating plate was installed on the transparent wall surface of the photoelectric container to adjust the irradiation direction or light amount from the light source, and the amount of light obtained from the grain east was regarded as the transmitted light. The regulating plate is removably installed on the transparent wall surface of the photoelectric container so that the light beam is reflected when the light is removed, and the transmitted light beam and the reflected light beam are detected by different methods of detecting different colored particles in the same photoelectric layer. The purpose of this invention is to provide a device that can switch between the two.

Embodiments of the present invention will be described based on FIGS. 1 to 5.

Reference numeral 1 in FIG. 1 is a sorting machine frame, and a vibrating grain feeder 3 with a vibrating device 2 is installed on the upper part of the machine frame 1, a supply hopper 4 is provided on the supply side, and a A grain flow path is formed by installing a flow gutter 5 connected in the shape of a letter, and the flow gutter 5
A photoelectronic separation chamber 6 consisting of a photoelectronic layer and a sorting member is connected to the lower end, and a photoelectronic layer consisting of a light source 7 and a light receiving element 8 is connected to the falling trajectory A of the different color mixed particles flowing out from the downflow gutter 5. At the same time, the injection nozzle of the injection nozzle device 9, which serves as a sorting body, is fixed with an iron insert in the vicinity thereof, and the photoelectric device and the injection nozzle device 9 are electrically connected via a control circuit 12. A discharge row 0 for different color grains is provided at the bottom of the photoelectric sorting chamber 6, and a grain collection barrel 11 for regular grains is inserted with iron on the extension of the trajectory A to collect the regular grains and discharge them out of the machine. It is formed like this. The lighting device of the photovoltaic layer is shown in FIG.
As shown in FIG. 5, light source containers 13, 13 each containing a plurality of light sources 7 such as crab light lamps arranged in parallel are placed on both sides of the light source containers 13, 13 through the flow path A of the grains flowing down into the photoelectric sorting chamber 6. The inner walls of the containers 13, 13 are respectively formed into light-transmitting wall surfaces 14, 14.

Each of the light-transmitting wall surfaces 14, 14 is provided with a light-transmitting regulating plate 15, 15 for adjusting the direction of illumination or the amount of light, which is removably formed by providing mounting grooves 16, 16 on both sides of the wall surface 14, respectively. The light transmission regulating plate 15a in FIG. 2 is a gray-colored synthetic resin board with a part cut out and an irradiation closure 17 provided, and the light transmission regulating plate 15b in FIG. It is made of a synthetic resin plate and controls the amount of light by shielding the light-transmitting wall surface 14 on one side. Reference numeral 18 denotes a handle portion for attaching and detaching the regulating plate.

In addition, the light receiving device of the photoelectric calendar has light receiving elements 8a and 8b mounted on both side wall surfaces perpendicular to the transparent wall surfaces 14 and 14 of the containers 13 and 13 in the photoelectric sorting chamber 6 so as to face each other. In the above-mentioned configuration, the effect when the light-transmitting regulating plates 15a and 15b are removed from the light-transmitting wall surface 14''14 will be explained (see Fig. 1). When colored particles and particles mixed with different color particles such as colored particles mixed in particles that do not transmit light, such as glutinous rice, are supplied from the supply hopper 4 to the vibrating grain feeder 3,
Particles mixed with different color grains flow down to the downflow gutter 5 provided at the lower part by the vibration action of the vibrating grain feed gutter 3, and the particles sliding in the gutter flow out in the form of flight along a predetermined flow trajectory inside the photoelectric sorting chamber 6. do.

In the sorting chamber 6, the light receiving elements 8, 8 receive the reflected light emitted from the light source 7 and obtained from the grain east flowing down, and output a detection signal for the shape of different colored particles in the grain east to the control circuit 12. The injection nozzle device 9 of the sorting body is activated by the output signal of
is activated, blows air at a timely time to remove the different colored particles from the falling trajectory and discharge them out of the machine from the different colored particle discharge port 10, and the regular particles are ejected from the grain collecting cylinder 11 and sent to the next process. Entrusted.
Then, the light-transmitting wall surface 1 of the photoelectric container 13 provided directly in front of the photoelectric equipment
4, the effect when the light transmitting regulating plates 15, 15 are attached to adjust the irradiation direction or the light amount is as follows (see FIGS. 4 and 5): On the other hand, a light beam of a fixed irradiation direction (incident angle 8) is irradiated from each of the irradiation openings 17, 17 on both sides, and the light receiving element 8a on the front wall is The light receiving element 8b on the rear wall clearly receives the amount of reflected light from the grain, and the light receiving element 8b on the rear wall clearly receives the transmitted light from the grain.The sum signal is sent to the control circuit 12, and the injection nozzle device is activated according to the signal value. 9, it produces translucent glutinous white rice from white opaque glutinous rice, translucent glutinous rice from sake rice with opaque shinpaku, and translucent glutinous rice from brown rice. Colored grains, etc. can be easily separated and sorted.

In addition, in the separation and sorting of colored grains using this transmitted light beam, when there is no contamination rate of different colored particles, the regular grains are discharged from the grain collector cylinder 11 for regular grains, and the different colored particles are discharged from the discharge row 0 for different colored grains. On the other hand, when a large number of different colored particles are mixed in, the sorting efficiency can be improved by controlling the different colored particles to be discharged from the grain collection tube 11 for regular particles and the regular particles from the discharge row 0 for different colored particles.

In addition, in the above-mentioned sorting action, if the amount of irradiation light in the photoelectric sorting chamber 6 is excessive, the photoelectric containers 13 and 13 installed oppositely
The amount of light irradiated from the light source 7 can be adjusted by attaching a light transmission regulating plate 15a to one light transmitting wall surface 14 and a light transmitting regulating plate 15b to the other light transmitting wall surface 14.

As described above, according to the lighting device of the present invention, the irradiation direction and the amount of light irradiated from the light source to the falling grain east can be adjusted by attaching and detaching the light transmission regulating plate, so that when the light transmitting regulating plate is detached, the light receiving element reflects light. In order to have a detection effect by light beam, and
When the regulating plate is installed, it is easy to make a cut-out screen so that the detection effect is performed by transmitted light, so that particles mixed with different colors can be separated and sorted smoothly and quickly using several sorting elements.

[Brief Description of the Drawings] Figure 1 is a side sectional view of a color sorter showing an embodiment of the present invention;
2 and 3 are perspective views of the light transmission regulating slope, FIG. 4 is a partially cutaway perspective view of the photoelectric sorting chamber, and FIG. 5 is a plan sectional view of a portion of the photoelectric sorting chamber. 1... Sorting machine frame, 2... Vibrating device, 3... Vibrating grain feeder, 4...
- Supply hopper, 5... Downflow gutter, 6... Photoelectric sorting room, 7... Light source, 8, 8a. 8b... Light receiving element, 9.
... Injection nozzle device, 10 ... Discharge port for different color particles, 11
... Grain collection node for shaped particles, 12... Control circuit, 13...
Light source container, 14...transparent wall surface, 15, 15a, 15
b...Transparent regulation plate, 16...Mounting groove, 17...
Illumination closure, 18...Handle portion, A...Downward trajectory, 8...Incidence angle. Figure 1 Figure 2 Figure 3 Figure 4 Figure 5

Claims (1)

[Scope of Claims] 1. Particles mixed with different color grains are allowed to flow down from a down-flow gutter to a grain collection cylinder, and a photoelectric sorting chamber consisting of a photoelectric device and a sorting actuator is provided in the flow trajectory, and a light source of the photoelectric device is directed to the trajectory. A light receiving element detects the change in the amount of light obtained by irradiating the particle bundle flowing down the line, and the detection signal is communicated to a control circuit, and the sorting actuator is actuated in accordance with the detection signal to remove particles of different colors. In the separating sorting device, when a light-transmitting regulation plate that adjusts the irradiation direction or amount of light from the light source is installed, the amount of light obtained from the particle bundle is used as a transmitted light source, and when the regulation plate is removed, it is used as a reflected light beam. An illumination device for a color sorter, characterized in that the regulation plate is removably provided on a transparent wall surface of a light source container provided in the photoelectric device. 2. The illumination device for a color sorter according to claim 1, wherein the light transmission regulating plate is a dark synthetic resin plate with a portion cut out and provided with an opening for light emission.