JPH02212721A - Malfunction preventer for automatically weighing apparatus for grains - Google Patents

Abstract

PURPOSE:To prevent a malfunctioning by providing a device to close a shutter when a set weight value is reached and a means for sensing a storage bag to emit an alarm when the storage bag is determined to be placed after the end of an initial operation. CONSTITUTION:A weight value is set at 200g to judge that a change occurs by a fixed value beyond a weight value measured at the start of electric energization. An alarm is emitted with a buzzer 17 with a judgement that a connection is continues for a fixed time length while an error is shown on a digital display device 16. In operation, electric energization is started with a storage bag place on a measuring base of a weight meter 7 and thereafter, when the storage bag is lowered, the weight is reduced by a fixed value beyond the weight value set for the electric energization and the buzzer 17 is operated to emit an alarm. So, a weighing work is interrupted and an electric energization is redone with no load on the weight meter 7. Thus, a normal initial operation is performed to set a weighing reference value correctly, thereby enabling the accomplishing of a normal weighing work thereafter.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention is a method for preparing grains, which involves sorting grains after hulling and then weighing and filling the sorted grains into storage bags by a preset constant weight. The present invention relates to a device for preventing this operation at the start of energization in an automatic measuring instrument.

[Prior art] Conventionally, automatic grain weighing involves sorting grains supplied from a huller, etc., removing waste grains, weighing the sorted grains, and filling storage bags with preset constant weights. Various types of containers are known, for example, as disclosed in Japanese Patent Application Laid-Open No. 60-79229.

[Problems to be Solved by the Invention] This type of automatic grain weighing device requires a control circuit for setting and displaying the weight to be weighed, controlling the start and stop of grain filling, and displaying the weighed weight. A built-in control device is provided, and in this control device, an initial operation is performed when power is started. At that time, the true reference value of the weight 51 is set with nothing placed on the scale board for each weight.

However, with this type of automatic grain weighing machine, empty storage bags are placed on the weighing scale to fill it with grain.
When starting work, it is often the case that the power is turned on with the storage bag placed on top of the bag, and then the work continues, and in this case, true standard values for each weight are not set. Therefore, incorrect measurements may continue to be made.

In view of these problems, the present invention has been developed to prevent the storage bag from being placed on the push plate of the weighing scale in the unlikely event that electricity is started with the storage bag etc. on the weighing scale at the start of work. or when the storage bag is subsequently removed from the scale, it is determined that the weight has changed by more than a certain value, and an alarm is issued and the initial operation is canceled. Close the shutter 11! A malfunction prevention device in an automatic grain weighing device that prevents the continuation of erroneous weighing work by performing one or all of the sushi operations, and enables reliable grain weighing work at all times. The purpose is to provide the following.

[Means for Solving the Problems] The present invention is constructed as follows as a technical step to achieve the object. In other words, a hopper equipped with a shutter, a weighing scale for measuring the weight of grains to be filled from this popper into a storage bag, a weight to be filled in advance, and a weight value measured by the weighing scale being set in advance. The controller is equipped with a control device that closes the shutter when the weight reaches a certain weight value, and a means for sensing that a storage bag is placed on the weighing scale. The device is characterized by having means having one or all of the functions of issuing an alarm, canceling the initial operation, and closing the shutter when it is determined that the storage bag is placed on the cup plate. This device is a malfunction prevention device for an automatic grain weighing machine, and further includes a popper equipped with a shutter, a weighing scale for measuring the weight of grain to be filled into a storage bag from the popper, and a device for setting the weight to be filled in advance. It is equipped with a control device that closes the shutter when the weight value measured by weighing reaches a preset weight value, and after the initial operation at the start of energization in the control device described in 1. means for determining that the weight value has fluctuated by more than a certain value, and at the time of such determination, issuing an alarm and canceling the initial operation;
This is a malfunction prevention device for an automatic grain weighing machine, characterized in that it is equipped with a means having one or all of the functions of closing a shutter.

[Function] Since the control device in the automatic grain weighing machine according to the present invention is configured as described above, electricity is started with the storage bag etc. placed on it, and the true reference value of the weighing scale is set. If the weight is not lifted, please make sure that the storage bag is on the scale, or that the weight is 1! when the storage bag is removed from the scale. , M is determined by the determining means, and if the fluctuation value is greater than or equal to a certain value, an alarm is issued,
The initial action is canceled and one or all of the shutter closing functions are performed. Therefore, an inappropriate state is notified or the continuation of inappropriate work is prevented.

[Example ] An embodiment of the present invention will be described with reference to the drawings.

In FIGS. 1 and 2, 1 is a main body of an automatic grain weighing device, and this main body 1 has a sorting section 2 for removing waste grains without lifting the grains therein, A hopper 3 for temporarily storing the sorted grains is provided on the top thereof. 4 is a grain supply section, and 5 is a waste grain discharge port.

A grain outlet at the bottom of the hopper 3 is equipped with a shutter 6 that opens and closes automatically. Reference numeral 7 denotes a weighing scale, and this weighing scale 7 is an electronic scale with a built-in load cell. The weighing scale 7 is installed and used below the hopper 3, and a grain storage bag 8 is placed on the weighing platform when the grain is filled. Reference numeral 9 denotes a control panel in which the weight to be filled is set in advance, and a weighing scale 7
A control device and the like that closes the shutter 6 when the measured weight value reaches a preset weight value are built in.

The above control device is constructed as shown in FIG.

That is, the microcomputer ① has the weighing scale 7.
A load cell 11 is connected via an amplifier 12 and an A/D converter 13, and this microcomputer 10 controls a shutter solenoid 14 of the shutter 6 via a relay 15, and also controls a digital display 16 for weight, etc. It is configured to control a buzzer 17 that roughly issues an alarm. In this control device, an initial operation is performed at the start of energization, and at that time, a measurement reference value for the weighing scale 7 is set. means for determining that the weight value has fluctuated by more than a certain value from the measured weight value; and at the time of determination, sounding a buzzer 17 to issue an alarm;
Means are provided which have one or all of the functions of canceling the initial operation and closing the shutter 6.

The above-mentioned functions of the control device operate as shown in the flowchart of FIG. 4, for example, and here, the weight value for determining that the weight value has changed by more than a certain value from the weight value measured at the start of energization is 200 g. In addition, it is determined whether the stability has been stabilized within ±2 of ±5g by an internal count, and it is further determined whether the stable state has lasted for a certain period of time. , an error message is displayed on the digital display 16. Therefore, electricity is started while the storage bag 8 is placed on the weighing scale 7, and then the storage bag 8
When the weight is lowered, the weight decreases by more than a certain value than the weight value set at the time of energization, so the operating state shown in FIG. 4 is reached, and the buzzer 17 is activated to issue an alarm. Therefore, if you interrupt the weighing operation and turn on the power again without placing anything on the weighing scale 7, the normal initial operation will be performed and the weighing reference value of the weighing scale 7 will be set correctly, and from then on, Can perform normal weighing work. In addition, in a device configured to eliminate the initial operation, the display on the display 14 becomes blank at that time, and in a device equipped with a function to close the shutter 6, the grains do not flow out at that time, and the grains do not flow out. dissipation can be prevented.

In addition, as shown by the broken line in Fig. 3, the set weighing scale 7
By adding the function 18 that temporarily stores the weighing reference values of Is it possible to proceed? According to this configuration, it is possible to eliminate unnecessary warnings and improve the working environment.

On the other hand, in the automatic grain weighing device according to the present invention, the malfunction prevention means detects whether or not the storage bag is placed on the weighing scale of the weighing scale 7 at the start of energization, and performs the malfunction prevention operation as described above. For example,
As shown in FIGS. 5 and 6, a part of the weighing scale 70 may be made into a transparent window 19, and a sensor such as a photoelectric element 20 may be provided inside. 21 is a control section, and 22 is a display section. Further, as shown in FIGS. 7 and 8, the main body 1 of the automatic grain weighing device is equipped with a similar sensing means.
It may be O-.

[Effects of the Invention] The present invention includes a hopper with a shutter, a weighing scale for first measuring the grains filled from the hopper into storage bags, a pre-setting weight before filling, and a weight scale of 1. a control device for closing the shutter when the measured weight (-) reaches a preset weight value; and a means for sensing that a storage bag is placed on the meter; After the initial operation at the start of energization in the device, the heavy [-
Equipped with means for having one or all of the functions of issuing an alarm, canceling the initial operation, and closing the shutter when it is determined that a storage bag is placed on the push plate 1. Furthermore, after the initial operation at the time of starting energization in the control device, the weight value fluctuated by more than a certain value than the measured value at the time of starting energization! A means of disconnecting 111 and issuing a 7 alarm when 1'11 is disconnected, first +1
If you start energizing the device with a storage bag, etc. placed on it, it will
Detects that the storage bag is placed on the weight scale, or after that, removes the storage bag from the weighing scale.
(42) It is determined that the weight has changed by more than a certain value, and an alarm is issued, the initial operation is canceled, and one or all of the functions of closing the shutter are executed. As a result, it is possible to prevent the continuation of the subsequent clogged weighing operation, and it is possible to always carry out the old-style grain weighing operation reliably.

[Brief explanation of the drawing]

Figures 1 and 2 are perspective views of the entire automatic Xta machine for grains showing an embodiment of the present invention, Figure 3 is a block diagram showing the configuration of the control device, and Figure 4 shows the operation of the control device. figure〕
[1-Char 1・, Figure 5 is a perspective view of the whole showing another embodiment, Figure 6 is a configuration diagram of its main parts, and Figure 7 is a diagram of the whole showing another embodiment. The perspective view and FIG. 8 are configuration diagrams of the main parts. 1... Main body of automatic grain weighing device, 2... Sorting section, 3
...Hopper, 6...Shutter, 7...Weight scale, 8
... Grain storage bag, 9... Control panel, 10... Microcomputer, 17... Buzzer

Claims (2)

[Claims] (1) A hopper equipped with a shutter, and a weighing scale that measures the weight of grains filled from this hopper into storage bags;
A control device that sets the weight to be filled in advance and closes the shutter when the weight measured by the scale reaches the preset weight value, and senses that the storage bag is placed on the scale. After the initial operation at the start of energization in the control device, when it is determined that the storage bag is placed on the scale of the weighing scale, an alarm is issued, the initial operation is canceled, and the shutter is opened. 1. A malfunction prevention device for an automatic grain weighing device, characterized in that it is equipped with means having one or all of the closing functions. (2) a hopper equipped with a shutter; a weighing scale for measuring the weight of grains filled from the hopper into storage bags;
The control device is provided with a control device that sets the weight to be filled in advance and closes the shutter when the weight value measured by the weighing scale reaches the preset weight value, and the initial operation at the time of starting electricity supply in the control device. means for determining that the weight value has fluctuated by a certain value or more from the weight value measured at the time of starting energization after the completion of energization, and one of the functions for issuing an alarm at the time of such determination, canceling the initial operation, and closing the shutter. What is claimed is: 1. A malfunction prevention device for an automatic grain weighing device, characterized in that it is equipped with a means for connecting or having all of the above.