JPH0413030B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION FIELD OF INDUSTRIAL APPLICATION The present invention relates to a failure control device for a color sorter.

Conventional technology A conventional color sorting machine matches the amount of light reflected and transmitted by grains of normal color passing through a photoelectric sorting chamber with the amount of reflected and transmitted light from the background, and then uses the light receiving element to measure the amount of light reflected and transmitted. The light-receiving element detects the change in the amount of light that occurs when abnormal-colored grains, etc., which are different from normal-colored grains, pass by.
The spray nozzle device is operated in response to the detection signal from the light receiving element, and grains, etc. of different color particles are blown away and sorted by the blast action of the spray nozzle device.

Further, a hopper is provided on the supply side of a vibration table equipped with a vibrator, a chute is installed on the discharge side of the vibration table, a sorting zone is provided at the lower end of the chute, and the chute in the sorting zone is provided with a hopper. A detector, a fluorescent light, and a background are respectively arranged on both sides of the falling trajectory of the material to be sorted flowing down from the lower end, and a compressed air eliminator equipped with an eliminator drive device is provided at the bottom of the detector, and the detector is connected to the compressed air. A sorting device was disclosed in Japanese Patent Application Laid-Open No. 2003-19101, in which a processor that operates an eliminator is connected, a chute and a sorting band are connected to the vibration table, and a plurality of the chute are arranged in parallel to form a plurality of blocks.
It has been proposed as Publication No. 57-130579.

Furthermore, in the case of an automatic reading and sorting machine that malfunctions or its sorting capacity decreases, a system has been proposed in JP-A-55-134675 that automatically stops the automatic reading and sorting machine that has caused the abnormality. There is.

Problems to be Solved by the Invention Conventional color sorting machines are often used continuously during the day and night, but especially at night when there is a shortage of work managers, the amount of light from a background lamp during the sorting process is reduced. When a malfunction occurs in a machine, etc., it is often left as is, and in this case,
Since the sorting operation continues in a state where the amount of reflected/transmitted light of the grains, etc. and the amount of reflected/transmitted light of the background do not match, different color particles are mixed into the sorted reference color grains, leading to a decline in product quality. It had the following disadvantages.

Also, the one described in Japanese Patent Application Laid-Open No. 57-130579,
Failure of detectors, fluorescent lights, compressed air eliminators, vibrators, etc. has not been adequately considered.

Furthermore, even if an automatic reading and sorting machine breaks down, the flow of postal letters to the series of devices to which the sorting machine belongs does not stop; A conveyance path is provided that automatically operates the gate of the direction change part of the sorting machine and automatically conveys the postal letters sent from the automatic sorting, sorting, stamping machine to the backup automatic reading and sorting machine. requires a spare automatic reading and sorting machine, and all automatic reading and sorting machines, including the spare automatic reading and sorting machine, cannot be used at the same time, and if multiple automatic reading and sorting machines break down, It was impossible to respond.

It is an object of the present invention to address the above-mentioned problems and to
Photodetector, amplifier, in any consistent sorting process
Even if at least one of the electromagnetic on-off valve of the injection nozzle device and the vibrating device of the vibrating grain feeder fails, the failure detection circuit of the failure control circuit that is electrically connected to these can perform any consistent screening. A failure signal emitted from the process is detected, the detection signal from the failure detection circuit is input to the central processing unit, and the central processing unit stops the vibration device of the vibrating grain feeder of the block where the failure has occurred, and also The amount of vibration of the vibration device of the vibrating grain feeder is increased to continue the sorting action, interrupting the supply of grain to the faulty block, and at the same time preventing the contamination of foreign particles from the faulty block. However, it is necessary to increase the amount of grain supplied to other blocks where failures do not occur, to maintain the total amount of grain sorted approximately constant through the continuous sorting process of other blocks, and to provide a spare block. To provide a failure control device for a color sorting machine, which can always obtain a substantially constant amount of carefully selected high-quality grains without any trouble.

Means for Solving the Problems A failure control device for a color sorter according to the present invention is provided with a raw material supply section on the supply side of a vibrating grain feeding gutter equipped with a vibrating device, and a raw material supply section is provided on the supply side of the vibrating grain feeding gutter, and a flow source is provided on the discharge side of the vibratory grain feeding gutter. A gutter is installed, a photoelectric sorting chamber is provided at the lower end of the gutter, and a light-receiving element, a light source, and a back ground are installed on the sides of the falling path of the objects to be sorted flowing down from the lower end of the gutter in the photoelectric sorting chamber. In a color sorter, a photoelectric device is arranged, an injection nozzle device equipped with an electromagnetic on-off valve is provided below the photoelectric device, and the light receiving element is connected to a control circuit for operating the injection nozzle device. A plurality of grain feeding paths are provided in the gutter body, one downflow gutter is connected to each of the grain feeding paths, and a photoelectric sorting chamber is connected to each of the downflow gutter to form an integrated sorting process, and the vibration grain feeding Multiple gutter units are arranged in parallel to form multiple blocks.
The photoelectric device, the injection nozzle device, and the vibrating device of the vibrating grain feeding gutter provided in each of the integrated sorting processes are electrically connected to a failure detection circuit of the failure control circuit, and the failure detection circuit is connected to the failure detection circuit when a failure occurs. The present invention is characterized in that it is connected to a central processing unit that stops the vibrating device of the vibrating grain feeding gutter of one block and increases the amount of vibration of the vibrating device of each vibrating grain feeding gutter of other blocks.

Embodiments Hereinafter, embodiments of the present invention will be described in detail based on the drawings.

In FIG. 1, 1 is a sorting machine frame, and on the upper part of the sorting machine frame 1, as shown in FIG. A raw material supply unit 4 consisting of a supply hopper is provided on the supply side of the vibrating grain feeder 3, and a ramp 5, which is a downflow channel, is mounted and fixed on the discharge side of the vibrating grain feeder 3, and the lower end of the ramp 5 A photoelectric sorting chamber 6 is provided, and the lower end of the ramp 5 is connected to a chamber frame 7 of the photoelectric sorting chamber 6.

As shown in FIG. 3, on both sides of the falling trajectory X of grains, which are objects to be sorted, flowing down from the lower end of the ramp 5 in the photoelectric sorting chamber 6, there are a light receiving element 8, a light source 9, and a background 10. Photoelectric devices 11 are respectively disposed, and a grain collecting tube 17 is provided below the ramp 5 in the photoelectric sorting chamber 6 with its upper end opened along the flow path X.
is arranged, and an injection nozzle device 13 equipped with an electromagnetic on-off valve 12 is provided at the lower part of the photoelectric sorting chamber 6.
The light receiving element 8 of the grain collecting cylinder 17 is connected to a control circuit 14 which operates the injection nozzle device 13.

A sorted grain outlet 18 is formed at the lower end of the grain collecting tube 17, a different color grain outlet 16 is formed at the side of the grain collecting tube 17 at the bottom of the chamber frame 7, and a different color grain outlet 16 is formed on the outside near the upper end of the grain collecting tube 17. The injection nozzle device 13 is attached, and the tip of the injection nozzle 15 of the injection nozzle device 13 is arranged facing the flow trajectory X.

The grains are supplied from the vibrating grain feeder 3 to the upper end of the ramp 5 due to the vibration action of the vibrating device 2 of the vibrating grain feeder 3, and the unique flow trajectory X that flows from the lower end of the ramp 5 into the photoelectric sorting chamber 6 is unique. A light beam is irradiated from the light source 9 of the photoelectric device 11 to the mixed particles, and the light reflected or transmitted from the different color mixed particles and the amount of light from the background 10 are detected by the light receiving element 8 of the photoelectric device 11.
The light receiving signal of the light receiving element 8 is input to the control circuit 14, and the output signal of the control circuit 14 opens and closes the electromagnetic on-off valve 12 of the injection nozzle device 13, and the injection nozzle 15 of the injection nozzle device 13 opens and closes the light. The different color particles are separated from the falling trajectory X by the wind action, and the different color particles are discharged from the different color particle outlet 16 at the bottom of the chamber frame 7, and the sorted reference color particles are discharged from the sorted grain outlet of the grain collecting cylinder 17. It is designed to be taken out of the aircraft from 18 onwards.

As shown in FIG. 1, in the gutter body of the vibrating grain feeding gutter 3, there are a plurality of six grain feeding paths 19A, 19B,
19C, 19D, 19E, 19F are provided respectively, and each grain feeding route 19A, 19B, 19
C, 19D, 19E, 19F are vibrating grain feeders 3-1
One of the ramps 5 and one of the photoelectric sorting chambers 6 are connected to one grain feeding path 19A of the vibrating grain feeding trough 3 in a sorting process. is formed, and the sorting process is carried out through the plurality of grain feeding paths 19A, 19B,
They are connected to 19C, 19D, 19E, and 19F, respectively, to form one block.

In FIG. 1, each grain feeding path 19A of the vibrating grain feeding gutter 3,
19B, 19C, 19D, 19E, and 19F each have a ramp 5 and a photoelectric sorting chamber 6 connected to each other to form a sorting process, and a vibrating grain feeder 3
A 30-channel multi-color sorting machine is shown in which a plurality of, for example, five units are arranged in parallel to form five blocks A, B, C, D, and E, and the vibrating grain feeder 3 is It is connected to the raw material supply section 4 via a branch path (not shown).

FIG. 4 shows a block diagram of the failure control circuit 20 provided in the failure control device of the present invention.
Each block A, B, C, D, E has a vibration device 2.
A, 2B, 2C, 2D, and 2E are provided in the vibrating grain feeder 3, respectively, and the light receiving element 8 provided in each sorting process, the amplifier 26, the electromagnetic shut-off valve 12 of the injection nozzle device 13, the lamp 25 of the background 10, and The vibrator 2 of the vibrating grain feeder 3 is connected to a failure detection circuit 23 of a failure control circuit 20, and the failure detection circuit 23 is connected to a central processing unit 21 (hereinafter referred to as CPU) via an input interface 22.
The CPU 21 connects the vibration devices 2A, B, C, D, and E of each block via the output interface 29.
2B, 2C, 2D, and 2E have been contacted.

The CPU 21, which has communicated with the failure detection circuit 23, stops the vibrating device of the vibrating grain feeding gutter of the block in which the failure has occurred, and increases the amount of vibration of the vibrating device of each vibrating grain feeding gutter of the other blocks. .

The failure detection circuit 23 receives the outputs of the vibrator 24 of the vibrating device 2 provided in all blocks, the electromagnetic on-off valve 12 of the injection nozzle device 13 in the sorting process of all blocks, and the lamp 25 of the background 10, and The respective outputs of the light receiving element 8 and the amplifier 26 provided in the sorting process are scanned by the scanning circuit 27, and are digitally converted by the A/D converter 28 and input to the failure detection circuit 23. The fault location is detected from the signal,
A digital signal from the failure detection circuit 23 is input to the CPU 21 via the input interface 22.

In addition, in the CPU 21, the vibration devices 2A, 2B, 2 of each block A, B, C, D, E are sent from the output interface 29 so as to stop the vibration devices of the blocks belonging to the failure location in response to the failure signal.
C, 2D, and 2E, and the output interface 2 increases the current value of each vibration device 2 belonging to other blocks to an arbitrary predetermined upper limit value.
9 to each resistor (not shown) of the vibrating device 2A, 2B, 2C, 2D, 2E of each block A, B, C, D, E.

In a typical screening operation, the current value of the vibrator is set to reduce the current value by an arbitrary number of percentages below the upper limit value to maintain safety.

The numbers in the circles in FIG. 4 are the numbers for each device.

Next, the operation of this embodiment will be explained.

During the color selection operation, for example, block A
If the lamp 25 of the background 10 provided in any sorting process belonging to the
The failure detection circuit 23 inputs a digital signal indicating the location of the failed lamp 25 on the background 10 to the CPU 21 via the input interface 22. At the same time as stopping the vibration device 2A of the block A that has caused the failure, the vibration devices 2A of the other blocks B, C, D, and E are stopped.
The supply current values of B, 2C, 2D, and 2E are outputted from the output interface 29 so as to increase up to an arbitrary predetermined upper limit value, and the feeding operation of raw materials in the sorting process belonging to block A is interrupted, and The supply amount of raw materials for the sorting processes belonging to B, C, D, and E is automatically increased and corrected, and the sorting action of blocks B, C, D, and E whose supply amount has been increased is immediately continued as described above. An efficient sorting operation that maintains a substantially constant overall sorting amount can be continued without any reduction in sorting efficiency due to failure.

In addition, if a failure occurs in the light receiving element 8, the amplifier 26, the electromagnetic on-off valve 12 of the injection nozzle device 13, the vibrating device 2 of the vibrating grain feeder 3, etc., the vibrating device of the block in which the failure occurred will be stopped in the same manner as described above. Of course, at the same time, the supply current value of the vibrator of the other blocks is increased to continue the sorting operation.

Further, as means for controlling the amount of vibration of the vibration device 2, in addition to controlling the illustrated current value, there are cases where voltage or frequency is controlled.

Effects of the Invention As described above, according to the color sorting machine failure control device of the present invention, all blocks are normally used for grain sorting, and the light receiving element, amplifier, and injection Electromagnetic on-off valve for nozzle equipment,
and at least one of a vibrating device for a vibrating grain feeder.
When a failure occurs, the failure detection circuit of the failure control circuit detects a failure signal emitted from any consistent sorting process, inputs the detection signal from the failure detection circuit to the central processing unit, and the central processing unit detects the failure. At the same time as stopping the vibrating device of the vibrating grain feeding gutter of the selected block, the amount of vibration of the vibrating device of the vibrating grain feeding gutter of the other blocks is increased, and the continuous sorting process of the other blocks continues the sorting action, so that the entire Although the block can be used for sorting grain, it is possible to prevent foreign particles from a malfunctioning block from being mixed into the grain discharged from a block that performs normal sorting, and to prevent malfunctions from occurring. By increasing the amount of grain supplied to one block, the total amount of grain sorted can be maintained approximately constant through the continuous sorting process of other blocks without using a spare block, and the total amount of grain sorted can be kept almost constant at all times. It is possible to obtain a large amount of carefully selected, high-quality grain.

[Brief explanation of drawings]

FIG. 1 is a front view of a failure control device for a color sorter according to an embodiment of the present invention, FIG. 2 is a side sectional view of the main part of FIG. 1, and FIG. 3 is a sectional view of a photoelectric sorting chamber. FIG. 4 is a block diagram of the failure control circuit. 1... Sorter frame, 2, 2A, 2B, 2C, 2
D, 2E... Vibration device, 3... Vibrating grain feeder, 4...
... Raw material supply section, 5 ... Ramp, 6 ... Photoelectric sorting chamber, 7 ... Chamber frame, 8 ... Light receiving element, 9 ... Light source,
10... Background, 11... Photoelectric device, 1
2... Solenoid on-off valve, 13... Injection nozzle device, 1
4... Control circuit, 15... Injection nozzle, 16...
Different color grain outlet, 17... Grain collecting tube, 18... Sorting grain outlet, 19A, 19B, 19C, 19D, 19
E, 19F... Grain feeding route, 20... Failure control circuit, 21... Central processing unit, 22... Input interface, 23... Failure detection circuit, 24... Vibrator, 25... Lamp, 26... ...Amplifier, 27...Scanning circuit, 28...A/D
Converter, 29... Output interface, A,
B, C, D, E...block, X...falling trajectory.

Claims (1)

[Claims] 1. A raw material supply section is provided on the supply side of a vibrating grain feeding gutter equipped with a vibration device, a flow gutter is installed on the discharge side of the vibratory grain feeding gutter, and a photoelectric sorting chamber is provided at the lower end of the flow gutter, A photoelectric device consisting of a light receiving element, a light source, and a background is disposed on each side of the trajectory of the objects to be sorted flowing down from the lower end of the downflow gutter in the photoelectric sorting chamber, and an electromagnetic shut-off valve is provided below the photoelectric device. In the color sorter, which is provided with a nozzle device and in which the light receiving element is connected to a control circuit that operates the injection nozzle device, a plurality of grain feeding paths are provided in the gutter body of the vibrating grain feeding gutter, and each of the grain feeding paths is provided with a plurality of grain feeding paths. Connecting one downflow gutter and connecting a photoelectric sorting chamber to each downflow gutter to form an integrated sorting process, and arranging a plurality of vibrating grain feeders in parallel to form a plurality of blocks; a photoelectric device installed in each of the above-mentioned consistent sorting processes;
The injection nozzle device and the vibration device of the vibrating grain feeding gutter are electrically connected to the failure detection circuit of the failure control circuit, and the failure detection circuit is used to stop the vibrating device of the vibrating grain feeding gutter of the block in which the failure has occurred. A failure control device for a color sorting machine, characterized in that the control device is connected to a central processing unit that increases the amount of vibration of the vibrating device of each vibrating grain feeder of other blocks.