JPS59160574A - Grain discriminator in swing sorting apparatus - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a grain discriminating device in a oscillating sorting device that oscillates grains supplied onto a sorting plate and detects a separated paddy layer or brown rice area.

If a discrimination sensor for discriminating grains is installed on the oscillating sorting plate, it will be easier to distinguish between paddy, brown rice, etc. on the rough surface of the sorting plate.Based on this, a control signal (for example, oscillating sorting It is possible to accurately transmit a control signal, etc. to an adjustment device that adjusts the movement of a partition plate provided near the grain outlet of the plate.

However, it is generally possible to obtain better sorting performance by making the paddy layer larger than the brown rice layer among the grain groups on the rough surface of the sorting plate. If the discrimination sensors are installed at the same height, the discrimination sensor on the brown rice side will be closer to the surface of the grain layer than the discrimination sensor on the brown rice side, and the intensity of the reflected light from the surface of the grain layer will be lower. may become unstable and may not be able to perform the discriminative action as expected.

This invention has taken the following technical measures to solve the above problems.

That is, the rough surface (1a) that separates grains into paddy, mixed rice, and brown rice
) A discrimination sensor (3) consisting of a light source (3a) and a light receiving element (3b) is installed at a position above the gI rough surface (1a) on the grain discharge port (2) side of the rocking sorting plate (1) having a A plurality of sensors are installed from the area (a) to the mixed rice area (b), and the installation position on the rough surface (1a) is determined so that the discrimination sensor (A) in the mixed rice area (1b) is better than the sensor (A) in the brown rice area (1a). The sensor (B) is also placed at a slightly higher position.

Hereinafter, one embodiment of the present invention will be explained in detail based on the drawings. First, the configuration will be explained.
) has a rectangular swinging sorting plate (1) pivotally attached to a pair of upper and lower links (6) and (7) rotatably pivoted to the machine frame (5),
By rotating a swing cam (9) via a swing arm (8), the swing sorting plate (1) is configured to swing vertically and diagonally (in the W direction in the figure).

The oscillating sorting plate (1) forms a rough surface (1a) by forming a large number of small irregularities on its upper surface, and by oscillating in the direction W shown in the figure, the supplied grains are sorted by specific gravity and are divided into brown rice regions ( It is structured to be separated into a), a mixed rice area (c), and a linear area (b). (2) is a grain discharge port for discharging the grains transferred by the swinging sorting plate (1);
1) is formed on the swinging side.

QOI is the brown rice partition plate installed between the brown rice area (a) and the mixed rice area (c) (1) is the paddy partition plate installed between the mixed rice area (c) and the line area (b). , is installed at the grain outlet (2) to form a brown rice outlet 0, a mixed rice outlet α■, and a paddy outlet U→.

The brown rice partition plate QO is attached to a threaded portion (16a) of a motor shaft αe of a forward and reverse rotation motor (1ω) so that it can be freely adjusted to move toward the brown rice side and the mixed rice side.

The discrimination sensor (3) consists of a light source (3a) and a light receiving element (3b) that receives the light source, and is located above the discrimination sensor (B) that detects the condition of the brown rice area and the mixed rice area (c). This sensor is installed on the machine frame Q71. In addition, the discrimination sensor (~ is a plurality of sensors (A
1)・(A2)・(A,,) A brown rice partition plate (10) and a paddy partition plate 0υ are provided at appropriate intervals.

Both discrimination sensors (-(B) are both installed substantially perpendicularly to the plate surface of the oscillating sorting plate (1) (see FIG. 1), and are also provided on the rough surface (1a) of this sorting plate (1). On the other hand, the sensors are positioned lower in order from the line side discrimination sensor (A1) to the brown rice side discrimination sensor (B).

(18) is the discrimination sensor (A, , ) (A2) (A,
) (g) Knee ■conversion section that converts the current into voltage, 00 is the amplifier section, (1) is the comparator, QO is the judgment output device,
(A) is a clock, (C) is a latch circuit, (C) (C)
(c) is an analog switch, ni) is a differential amplifier, (c)
is a potentiometer, (g) (to) is a forward/reverse determination device,
0υ action is a relay, (to) is a forward/reverse motor.

Next, its effect will be explained. First, when an electric motor (not shown) is driven to drive each rotating part of the aircraft, the swing cam (9) rotates together with the swing shaft and moves the swing arm (8) up and down. A related pair of links (6
) (7) The swinging sorting plate (1) is connected to the W shown in Fig. 4.
swing in the direction.

When a mixed rice of unhulled rice and brown rice is fed to the feeding section in this state, the grain group is subjected to specific gravity sorting action by the rough surface (la) of the swinging sorting plate (1), and the grains are placed on the side of the grain discharge port (2). As it approaches, it is separated into brown rice area (A), mixed rice area (C), and linear area (1g). Among the grains that have reached the grain discharge port (2), the paddy is transferred to the paddy removal port 04) by the paddy partition plate αυ, and the mixed rice is transferred to the mixed rice by the paddy partition plate 01) and the brown rice partition plate QO. Inside the outlet α■, the brown rice is collected by the brown rice partition plate (IO) into the brown rice take-out locker θ, and proceeds to the next work process.

During this sorting work, a discrimination sensor (131) is installed above the brown rice area (A), and a discrimination sensor (A, ) (A2) (A,) is installed above the mixed rice area (B). ,
After each measurement is performed, the current is converted into a voltage by a knee conversion section (<18), and then amplified to a constant level by an amplification section 09.

Then, using the amplified voltage V5 of the brown rice side discrimination sensor (G) as a reference, use the other amplified voltages ■6 to v8 and the comparator (A).
After comparing and outputting a judgment output, this judgment output is latched by a clock (company) and the judgment output with the highest priority is selected, and this judgment output is used to trigger the analog switch ■ (c) (7)
is set to "ON" and the preset voltage is retrieved. Also, use the potentiometer (c) to set the brown rice partition plate to 0.
The voltage indicating the 0 position is taken out as a comparison voltage, and the difference between the set voltage and the comparison voltage is taken and amplified using a differential amplifier (A).
It is determined by the forward/reverse determination device 1 and the forward/reverse rotation motor (g) is driven via the relay 0υ02 to move the brown rice partition plate 00. Then, when the difference between the set voltage and the comparison voltage becomes less than a certain voltage, the forward/reverse motor (G) is stopped and the brown rice partition plate a0
It also stops the movement of.

During the detection operation of this discrimination sensor (8), however, among the grains separated on the rough surface (1a) of the oscillating sorting plate (1), the layer on the line side is one layer earlier than on the brown rice side. Therefore, as shown in Fig. 6, the discrimination sensor (A, )(A, )(A,
13) from the rough surface (1a) of the oscillating sorting plate (1).
If installed at a higher height, the detection distance from the surface of the mixed rice layer and the surface of the brown rice layer will differ. Therefore, the intensity of the reflected light erroneously emitted from the light source (3a) of the discrimination sensor (3) may not be constant, which may be one of the causes of the detection.
, ) (A2) As (A, ) goes from the brown rice side to the line side, the height from the rough surface is increased sequentially to increase the height from the grain layer surface (brown rice, paddy, mixed rice layer surface). Since the distance is kept approximately constant, the reflection distance, that is, the intensity of the reflected light, is likely to be constant, making it easy to sort brown rice and paddy.

In addition, in this embodiment, the rough surface (la
) Above, we explained the case where the rice is separated into three regions, that is, the brown rice region, the mixed rice region, and the paddy layer, but the same effect can be obtained with the oscillating sorting board that separates the brown rice into two regions: the brown rice region and the paddy layer. A plurality of discrimination sensors consisting of a light source and a light receiving element are installed from the brown rice area to the mixed rice area at positions above the rough surface on the grain discharge port side of the oscillating sorting plate which has a rough surface that separates the grains.
Since the sensor for determining the mixed rice area is installed at a slightly higher position on the rough surface 2 than the sensor for determining the brown rice area, the rough surface of the oscillating sorting plate can accurately separate the areas. Moreover, since the flow of grains can be detected from above, it can be expected to save labor by eliminating the need to re-sort brown rice twice due to unmixed paddy.

Furthermore, since the intensity of reflected light from the surface of the grain layer can be detected at approximately constant levels, the light-receiving element can accurately detect the amount of light emitted to the grain area and determine whether the paddy is brown rice.

[Brief explanation of drawings]

The figure shows an embodiment of the present invention, in which the first
The figure is a front view of the oscillating sorting device, the second figure is its top view, and the third figure is a front view of the swing sorting device.
FIG. 4 is a diagram of the control circuit, FIG. 4 is a diagram of the power transmission of the oscillating sorting plate, FIG. 5 is an enlarged view of the discrimination sensor, and FIG. 6 is a diagram showing the oscillating sorting device before improvement. (1) is a swinging sorting plate, (1a) is its rough surface, (2) is a grain outlet, (3) is a discrimination sensor, (3a) is its light source, (3b) is its light receiving element, (i) ) is the brown rice area, (b) is the mixed rice area, (A) is the discrimination sensor on the mixed rice side, (B
l, is a discrimination sensor on the brown rice side. Patent Applicant Name Iseki Agricultural Machinery Co., Ltd. Representative Akira Iseki Takashi No. 1 Paddy 3 ILL '-
Notomi figure 2

Claims (1)

[Claims] A discrimination sensor consisting of a light source and a light-receiving element is placed above the rough surface on the grain discharge port side of a rocking sorting plate having a rough surface for separating grains into paddy, mixed rice, and brown rice, extending from the brown rice area to the mixed rice area. A grain discriminating device in a rocking sorting device, characterized in that a plurality of grain discriminating devices are installed and the discriminating sensor in the mixed rice area is installed at a slightly higher position on the rough surface than the discriminating sensor in the brown rice area.