JPS60241979A - Color selector - 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] (b) Target Industrial applications The present invention relates to a color sorting device.

Conventional technology The raw materials to be sorted received from the supply hopper via the receiving plate are allowed to fall in alignment, an optical detector detects defective products in the alignment falling flow, and the defective products are transferred to an ejector outside the aligned falling flow. Various types of color sorting devices have been proposed in the past. For example, a color sorting device disclosed in Japanese Unexamined Patent Publication No. 5FI-15F179 is known. In this device, a plurality of photoelectric sorting chambers each equipped with an optical detector and an ejector are arranged side by side on a sloped downflow gutter, and the photoelectric sorting chambers are divided into an arbitrary number of sections to form a primary sorting section. and a secondary sorting section, and the discharge gutter of the primary sorting section is connected to the supply tank of the secondary sorting section via a grain lifting machine to form a consistent sorting process.

Problems to be Solved According to the conventional example described above, the secondary sorting section is connected to the primary sorting section, which improves the sorting performance. The raw material to be sorted must be lifted from the discharge gutter at the bottom of the primary sorting section to the supply tank at the top of the secondary sorting section using a grain lifting machine, which reduces processing time. In addition, the height of the entire device increases due to the addition of a grain lifting machine, and in addition, the size of the device in the left and right width direction tends to increase in order to install the desired number of primary and secondary sorting sections in parallel. This requires a large installation space.

(B) Means for Solving the Configuration Problems Therefore, the color sorting device according to the present invention has two stages of inclined chutes, upper and lower, and the upper inclined chute is used as a primary sorting device having a wide inclined surface. The lower inclined chute is a second inclined chute for secondary sorting in which a plurality of substantially U-shaped gutter bodies are arranged side by side, and the second inclined chute is provided at a portion corresponding to the ejector of the first inclined chute. By arranging the supply hopper, the first. The second and both inclined chutes are connected to perform the primary sorting and the secondary sorting continuously.

Function: In the color sorting device according to the present invention, first, a large amount of raw materials to be sorted are quickly aligned and dropped on a first inclined chute having a wide inclined surface, and an optical detector is used to detect defects in the aligned falling flow. When a good product is detected, it is ejected from the aligned falling stream by an ejector. The first inclined chute enables a large amount of sorting processing.

The raw materials to be sorted rejected by the ejector mentioned above are mainly defective products, but when they are removed from the aligned falling flow, a small amount of good products that are located near the defective products are also dragged in, so that a small amount of good products are These two products are mixed in with defective products.
The raw material to be sorted for the next sorting enters the supply hopper for the second inclined chute, which is located at a location corresponding to the ejector of the first inclined chute, and this time, it flows through a roughly U-shaped flow path one by one. It is distributed over the formed gutter body and allowed to fall in alignment. Therefore, the second inclined chute forms an aligned falling flow with high precision, making it possible to improve the secondary sorting performance.

In this way, once the raw materials to be sorted are allowed to flow through the first inclined chute, the primary sorting is performed while they fall in alignment under their own weight, and at the same time, the defective products and the good products in their vicinity are transferred to the second inclined chute under the same weight. They are subjected to secondary sorting while being aligned and falling. Such primary sorting and secondary sorting are performed successively, first quantitatively and then qualitatively, and the raw materials to be sorted are sequentially sorted from top to bottom according to their own weight. This is performed during alignment and dropping within the second inclined chute.

Example An embodiment of the present invention will be described with reference to FIGS. 1 to 4.

This color sorting device 1 mainly includes a first inclined chute 2, a first optical detector 3, and a first ejector 4 for primary sorting, and a second inclined chute 5 and a second optical detector for secondary sorting. The device 6 and the second ejector 7 are provided in two stages, upper and lower, in the body 8.

The first inclined chute 2 has a first receiving plate 10 at its entry side portion 9.
is facing, and the distance d from the end 11 of the first receiving plate 10 is set to be narrow enough to form a bulge-like stagnation part 12 of the "raw material to be sorted" there. narrow spacing d
.

It's Toshide.

The entrance side of the drive 1 receiving plate 10 faces below the outlet of the first supply outlet 13, and the entire first receiving plate 10 is provided with a first vibrating device 1.
Rice grains 15 are subjected to vibration from 4 and serve as “raw material to be sorted”
The rice grains 15a are moved in the direction of the end portion 11 while breaking the mountain, and once the momentum of the movement is reduced in the retention portion 12, the rice grains 15a in the lower part of the retention portion 12 are gradually changed to the wide slope of the 1-slope chute 2. This is so that they fall in alignment on the surface 16.

Since this first inclined chute 2 has a wide inclined surface 16, a large amount of rice grains 15 can be dropped quickly in an aligned manner.

The first optical detector 3 irradiates the aligned falling stream with light from a known device, for example a light source, compares the reflected light with a discrimination standard called a background, converts it into an electrical signal, and converts it into an electrical signal to a first ejector 4, for example an air It is possible to adopt a device that blows out the rice grains determined to be defective (defective product 15b) from the aligned falling stream to the nozzle and eliminates them. The details are well known and will therefore be omitted.

A second supply hopper 1 is provided at a portion corresponding to the first ejector 4.
7 is facing, and a second inclined chute 5 is provided below the outlet via a second receiving plate 18 which is made substantially horizontal.

A second optical detector 6 is mounted on the second inclined chute 5.
and a second ejector 7 is provided like the previous one.

The second inclined chute 5 is made up of a plurality of substantially U-shaped gutter bodies 22 arranged side by side, and forms a flow path corresponding to each gutter body 22, so to speak.

And the second receiving plate 18 which is connected to the entry side part 23
A plurality of wave-shaped distribution and supply grooves 24 are provided on the upper surface. A weir body 25 for distributing rice grains is disposed on the second side of the distribution supply groove 24 in a right-angled direction.
The distance d2 between the two is adjustable. The outlet portions 26 of each distribution supply groove 24 are connected to the gutter body 22 in corresponding positions.

Note that 27 indicates a second vibration device. Since the second optical detector 6 and the second ejector I can be conventionally known devices as described above, detailed explanation thereof will be omitted.

The rice grains 15 fed from the first supply hopper 13 move forward toward the end 11 while receiving vibrations from the first vibrating neck 14 on the first receiving plate 10. Since the distance d from the inlet part 9 of 2 is not adjusted narrowly, a stagnation part 12 is formed there, resulting in a "P1) Tsuji-like"
exhibits. The rice grains 15, which are advancing one after another, enter this clear stream part 12, the forward force due to vibration is reduced, and the rice grains 15 fall in alignment on the wide slope 16 under their own weight while the momentum remains "zero". During the aligned fall, if there is a defective product 15b in the aligned falling flow, the first optical detector 3 determines its presence, and the first ejector 4 removes the defective product 15b from the aligned falling flow. On the other hand, the non-defective products 15c are taken out into the first container 29 via the first auxiliary chute 28 without being rejected.

This primary sorting is mainly intended for quantity, and many rice grains 15 are color sorted in a short time.

The defective products 15b rejected as described above also involve some of the good products 15c located nearby in the sorted flow, and these are directly transferred to the second supply hopper as "raw materials to be sorted" for secondary sorting. 17 and reaches the second receiving plate 18.

Therefore, in response to the vibration applied by the second vibration device 27, these rice grains 15d for secondary sorting move forward in the direction of the second inclined chute 5, but the upper surface of the second receiving plate 18 is connected to the wave-shaped distribution and supply groove 24. Therefore, the rice grains 15e that have entered each distribution and supply groove 24 in a distributed manner and are on the convex portion 30 are forcibly dispersed by the weir body 25, and the rice grains 15e that have entered each distribution and supply groove 24 in a distributed manner and are on the convex portion 30 are forcibly dispersed by the weir body 25. The amount of rice grains 15d is evenly dispersed. Then, as described above, in response to the vibration imparted by the second vibration device 27, the rice grains 15d move forward without being uniformly dispersed, and reach the exit side portion 26 of the distribution and supply groove 24. This outlet part 26 is connected to the inlet part 23 of the second inclined chute 5, and each gutter body 22 is aligned with each distribution supply groove 24, so that the rice grains in each distribution supply groove 24 are 1
5d are supplied to each gutter body 22 and allowed to fall in line as they are. Therefore, a plurality of gutter bodies 22 are arranged in parallel.
When looking at the inclined chute 5 as a whole, accurate falling flows are formed for each gutter body 22, and evenly distributed falling flows are formed by the second receiving plate 18, so the alignment accuracy is extremely high. Become. Then, as in the first sorting, the second optical detector 6 detects only the defective product 15f, and the second ejector 7
The waste is removed to the outside of the aligned falling stream, and the amount is increased in the second container 31. 15 g of non-defective products are directly taken out from the second auxiliary chute 32 into the first container 29 described above.

That is, this secondary sorting is mainly aimed at accuracy, and is performed by color sorting so as to form an aligned falling flow accurately and to exclude only the defective products 15f.

The first inclined chute 2 and the second inclined chute 5 are arranged in two stages, upper and lower, and a second supply hopper 1T for the second inclined chute 5 is provided at a portion of the first inclined chute 2 corresponding to the first ejector 4. 1st place. Since the second double-sided inclined chute 2.5 is connected, the rice grains 15 are first sorted while falling in alignment due to their own weight, and the rice grains 15d for the second sorting are transferred to the second sorting as they fall due to their own weight. They arrive at the second inclined chute 5, where they are subjected to secondary sorting while falling in line under their own weight, and the primary and secondary sorting are carried out very continuously in a short period of time. .

(c) Effects Since the color sorting device according to the present invention has the content as described above, many effects can be expected, and the main ones are listed below.

tAl Because the first inclined chute for primary sorting has a wide inclined surface, it is possible to flow a large amount of material to be sorted for the first sorting, and the throughput per hour can be increased accordingly. ) The second inclined chute for secondary sorting consists of multiple approximately U-shaped gutter bodies arranged side by side, so depending on the gutter body, one
Because a flow path is formed in rows, two streams of water flow into each gutter body.
The raw materials to be sorted for the next sorting form a precisely aligned falling flow, which can greatly improve the sorting accuracy. Therefore, it is possible to process mainly with the intention of quantity, and when rejecting defective products from the aligned flow that falls down a wide slope, even if some of the good products in the vicinity are involved and removed, the following two problems will occur. Only defective products can be reliably eliminated during the next sorting.The first and second inclined chute are arranged in two stages, upper and lower, and a supply hopper for the second inclined chute is located at the corresponding part of the first inclined chute to the ejector. Since we arranged 1
The raw material to be sorted for secondary sorting on the next sorting edge simply falls from above to below under its own weight and enters the second inclined chute where it is subjected to secondary sorting, resulting in continuous processing of primary sorting and secondary sorting. This can be done in a short time, and the first and second inclined chutes are provided in two stages, upper and lower, and are inclined to each other. Since the inclined chute can be arranged close to each other, the vertical size of the entire device can be correspondingly reduced, and for the same reason, the size in the left and right width directions can also be reduced.

[Brief explanation of the drawing]

FIG. 1 is a schematic side view of the entire device showing an embodiment of the color sorting device according to the present invention, FIG. 2 is an enlarged side view of a part indicated by an arrow in FIG. 1, and FIG. FIG. 4 is an enlarged perspective view of the part indicated by the arrow ``■'', and FIG. 4 is a partial sectional view taken from the direction of the arrow IV--IV in FIG. 3. 1... Color sorting device 2... First IWM chute 3... First optical detector 4... First ejector 5... Second inclined chute 6...Second optical detector 7...Second ejector 15...Rice grains (raw material to be sorted) 15d...Secondary sorting rice grains (151

Claims (1)

[Claims] Raw materials to be sorted are supplied from a supply hopper to an inclined chute via a receiving plate and allowed to fall in alignment, and defective products in the alignment fall flow are detected by an optical detector facing the alignment fall flow. In a color sorting device which removes defective products from the aligned falling stream using an ejector, the inclined chute is a first inclined chute having a wide inclined surface, each of which has a combination of an optical detector and an ejector. and a second inclined chute in which a plurality of roughly U-shaped gutter bodies are arranged side by side in two stages, upper and lower, and a supply hopper for the second inclined chute is arranged in a portion corresponding to the ejector of the first inclined chute. connect both the first and second inclined chutes, and connect the first and second inclined chutes. 1 at the second inclined chute
A color sorting device characterized in that the next sorting and the second sorting are performed continuously.