JPH06221898A - Volume detection apparatus - Google Patents

Abstract

PURPOSE:To discriminate respective kinds of a plurality of kinds of pulverulent- body materials in their cutting-off operation automatically by a simple operation and to eliminate a mistake. CONSTITUTION:In a volume detection apparatus, the distance from a reference face of a content object inside a cylindrical container 2 placed on a stand is measured by an ultrasonic distance-measuring device 3, and the kind of the content object is discriminated on the basis of the distance. The volume detection apparatus is provided with an operating board 4, an alarm device 5 and a control circuit 6 including a storage circuit 7, and the change amount of the height of a content object when a pulverulent-body material in a package unit is put into the container is stored in the storage circuit 7 in advance. When the pulverulent-body material is selected and designated from a specified switch 10 on the operating board 4, the change amount of the height of a content object put into the container is measured by the ultrasonic distance-measuring device 3, the change amount is compared with the change amount of the height of the content object stored in advance, and a warning is issued from the alarm device 5 when an error at a prescribed value or higher is detected.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is used as a device for preventing the mistake of confusing the type of powder material when unpacking and using the packed powder material. The present invention was invented in order to prevent mix-up of inoculants mixed in a raw material iron material in a trace amount in a foundry, but is not limited to the foundry and is widely used in the process of unpacking and using the powder material. Can be used.

[0002]

2. Description of the Related Art There is widely known a technique of maintaining a desired quality of a cast product by mixing a trace amount of a metal material or an alloy material into cast iron as an inoculant. There are many kinds of inoculants, and in many cases, a plurality of kinds of them are used in combination.

On the other hand, such an inoculant is packed in a bag as a powder material, for example, in units of 10 kilograms,
When using, tear the bag by hand and take it out.
Since it is a powder material, its type is printed on the packaging bag, but if the package is unpacked, the type cannot be identified.

[0004] Here, inoculation means a physics beyond the effect of alloying by adding a small amount of metal or alloy into the molten metal poured into the mold during the casting operation of cast iron, Refers to a process that imparts chemical changes. The metallurgical meaning is to give the molten metal a "seed" or "crystal nucleus" for the solid phase that grows during solidification, and, in a phenomenological manner, promote heterogeneous nucleation to cause the graphite crystallization state. It is an attempt to improve. Although it slightly changes depending on the inoculant, treatment conditions, and time, it is carried out for the purpose of improving the material such as reducing the wall thickness sensitivity by increasing the number of graphite eutectic cells and improving the machinability by preventing the occurrence of cementite.

[0005]

In the work, an error occurs in which this kind is confused. Once an inoculum is incorrectly formulated, many defective products will be produced. Further, the work for this compounding may be accompanied by confirmation work by a plurality of workers, which is a drawback that the man-hours are large.

An object of the present invention is to improve this, and to provide a device capable of greatly simplifying the operation and reducing the occurrence of mistakes in mixing the types of powder materials.

[0007]

SUMMARY OF THE INVENTION The present invention provides a table, a cylindrical container placed on the table, and a distance from the table to the contents of the container mounted at a predetermined height. A volume detection device including an ultrasonic distance measuring device arranged to measure, comprising an alarm device and a control circuit for receiving an output electric signal of the ultrasonic distance measuring device and sending an output to the alarm device. The control circuit includes a memory circuit, and the memory circuit stores in advance the amount of change in the height of the content when the powder material of the packaging unit is put into the container. When the powder material is loaded into the container,
Means for comparing the amount of change in the output value of the ultrasonic distance measuring device with the amount of change in the corresponding material stored in the storage circuit, and when an error of a predetermined value or more is detected in the comparing means. Means for sending an alarm output to the alarm device.

An operating board is provided, the operating board is provided with a designation switch for selecting and designating any one of a plurality of types of powder materials by operation, and the storage circuit is provided with the container for the plurality of types of powder materials. The change amount of the output value of the ultrasonic distance measuring device when the powder material is charged into the storage circuit is stored, and the comparing means stores the change amount of the material corresponding to the setting of the designated switch in the storage circuit. It can be configured to include a means for taking out as a reference for comparison, further comprising a slip issuing machine, the control circuit, when the error detected by the comparing means is within the predetermined value. Means may be included to drive the slip issuing machine.

[0009]

The device of the present invention may be provided for each type of powder material. In that case, if the powder materials are mixed up and put in the container, an alarm is sent out to inform the operator that there is an error in the present work.

However, when there are many kinds of powder materials, the number of devices increases and the equipment becomes expensive. Therefore, the device of the present invention can be set to be switched depending on the powder material, and one device can be plurally set. It is also possible to share various types of powder materials. In that case, the procedure is as follows. Enter the type of powder material you are about to retrieve on the operation board. Then, the packaging of the powder material is unpacked and placed in a container. At this time, if the height (volume) of the powder material loaded into the container is not the height of the previously stored powder material, an alarm is issued and the type of powder material is wrong. The worker is notified.

[0011]

Embodiments of the present invention will now be described with reference to the drawings. FIG. 1 is a block diagram showing the configuration of the embodiment of the present invention.

In the embodiment of the present invention, a base 1, a cylindrical container 2 placed on the base 1, and a container 1 mounted at a predetermined height from the base 1 to the contents of the cylindrical container 2 are mounted. An ultrasonic distance measuring device 3 arranged to measure the distance, and
As a feature of the present invention, the operation board 4, the alarm device 5 and the slip issuing device 14 arranged on the operation board 4, and the control for taking the output electric signal of the ultrasonic distance measuring device 3 and sending the output to the alarm device 5 The control circuit 6 includes a memory circuit 7, and the memory circuit 7 stores the amount of change in the height of the contents when the powder material of the packaging unit is put into the cylindrical container 2. The amount of change in the output value of the ultrasonic range finder 3 and the corresponding material stored in the storage circuit 7 when the powder material is loaded into the cylindrical container 2 are stored in advance in the control circuit 6. The comparison means 8 for comparing the change amount and the warning output means 9 for sending a warning output to the warning device 5 when the comparison means 8 detects an error of a predetermined value or more.

Further, the operation board 4 is provided with a designation switch 10 for selecting and designating any one of a plurality of types of powder materials by operation, and the storage circuit 7 is provided with a cylindrical container 2 for the plurality of types of powder materials. The amount of change in the output value of the ultrasonic range finder 3 when the powder material is charged into the storage unit 7 is stored, and the comparison unit 8 stores the amount of change in the material corresponding to the setting of the designated switch 10. The ultrasonic distance measuring device 3 includes a means for taking out from the cylinder 11 and using it as a reference for comparison.
It is fixed to the holder 12 attached to the.

Next, the operation of the embodiment of the present invention thus constructed will be described.

In the casting process, a trace amount of metal material or alloy material is mixed into cast iron as an inoculant. This inoculant requires a plurality of types, and its cutting is performed by a material weighing device. As shown in FIG. 2, this material weighing device is provided with a plurality of hoppers 21, and a predetermined amount of inoculant is stored in each hopper 21. In addition, the operation board 27, the weighing means 25,
And the moving body 2 on which the cup 24 for cutting out the inoculant is placed
3 is provided, and a control device (not shown) controls the moving body 23 to a predetermined hopper 21 by an operation input from the operation board 27.
And the opening / closing means 22 of the hopper 21 is opened / closed to cut out a predetermined amount of the inoculant into the cup 24.

After the inoculant is cut out in this way, the hopper 21 is replenished with the inoculant.
The cylindrical container 2 according to the present invention shown in is used. When the inoculant is put into the cylindrical container 2 from the packaging bag, the surface is made flat, and the designation switch 10 arranged on the operation board 4 makes a designation input indicating the type of the inoculated reagent. , The control circuit 6 activates the ultrasonic distance measuring device 3,
Then, the valve 13 is controlled to move the cylinder 11 inside the cylindrical container 2 at a predetermined rate as indicated by the solid arrow.

By the movement of the cylinder 11, the ultrasonic distance measuring device 3 measures the average height of the surface of the inoculant in the cylindrical container 2 and outputs the amount of change to the control circuit 6. In the control circuit 6, the comparison means 8 takes in the change amount corresponding to the inoculant taken out in the cylindrical container 2 which is stored in the storage circuit 7 in advance, and compares it with the change amount output by distance measurement. When an error of a predetermined value or more is detected by this comparison, an alarm output is sent from the alarm output means 9, and the alarm device 5 issues an alarm according to this alarm output to notify that there is an error in the work.

When the comparison means 8 detects that the error is within a predetermined value, the comparison means 8 sends a chit issuing instruction signal to the chit issuing machine 14. Voucher issuing machine 14
In accordance with this instruction, will issue a transfer slip printed with the transfer permission including the type and weight of the inoculant. The operator can move the cylindrical container 2 together with this transfer form and put the inoculum into the corresponding hopper 21 shown in FIG.

Each inoculant is sold in the same weight, for example, in a packaging bag of a unit of 10 kilograms. However, since the specific gravities of the inoculants are greatly different, when they are taken out into the cylindrical container 2, their heights are not the same. , The ultrasonic ranging device 3 can be sufficiently identified, and thus the inoculant confirmed to be correct is the predetermined hopper 21 shown in FIG.
It is stored inside.

The apparatus of the present invention can be applied to a plurality of kinds of powder materials, and in that case, the required inoculant can be confirmed by performing the above-mentioned operation.

[0021]

As described above, according to the present invention, when cutting out a plurality of types of powder material used for molding such as casting, the type of the cut out powder material can be automatically input by a simple input operation. It is possible to make a distinction, and when a powder material is mixed up, an alarm is immediately issued to notify that there is an error, so that the reliability of the work process can be increased and the loss of work man-hours due to an error can be reduced. There is an effect that can be.

[Brief description of drawings]

FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention.

FIG. 2 is a diagram showing an arrangement state of hoppers of the material weighing apparatus according to the embodiment of the present invention.

[Explanation of symbols]

 1 unit 2 Cylindrical container 3 Ultrasonic distance measuring device 4 Operation board 5 Alarm device 6 Control circuit 7 Memory circuit 8 Comparison means 9 Alarm output means 10 Designated switch 11 Cylinder 12 Holding tool 13 Valve 14 Voucher issuing machine 21 Hopper 22 Opening / closing means 23 moving body 24 cup 25 weighing means 27 operation board

Claims (3)

[Claims] 1. A table, a cylindrical container placed on the table, and an ultra-sized container mounted at a predetermined height from the table and arranged to measure the distance to the contents of the container. A volume detection device including an acoustic distance measuring device, comprising: an alarm device; and a control circuit that receives an output electric signal of the ultrasonic distance measuring device and sends an output to the alarm device, and the control circuit includes a memory circuit. In the storage circuit, the amount of change in the height of the contents when the powder material of the packaging unit is loaded into the container is stored in advance, and the control circuit loads the powder material into the container. At this time, the means for comparing the amount of change in the output value of the ultrasonic range finder with the amount of change in the corresponding material stored in the memory circuit, and the comparing means have an error of a predetermined value or more. Sends an alarm output to the alarm device when detected Volume detecting device characterized by comprising a means. 2. An operation board is provided, the operation board is provided with a designation switch for selecting and designating any one of a plurality of types of powder materials by an operation, and the memory circuit is provided for the plurality of types of powder materials. The amount of change in the output value of the ultrasonic distance measuring device when the powder material is loaded into the container is stored, and the comparing means stores the amount of change in the material corresponding to the setting of the designated switch. 2. The volume detection device according to claim 1, further comprising means for taking out from a storage circuit and using it as a reference for comparison. 3. A slip issuing machine, wherein the control circuit comprises:
3. The volume detecting device according to claim 1, further comprising means for driving the slip issuing machine when the error detected by the comparing means is within the predetermined value.