JP2021115492A - Determination device for packing mode of material to be treated, and heat treatment system comprising the same - Google Patents

Abstract

To provide a packing mode determination device determining the installation modes such as magnitude and amount of a material to be treated in the inside of a treatment chamber of cleaning equipment or the like, and to provide a heat treatment system having such a device.SOLUTION: A packing mode determination device 10 for a material W to be treated comprises: a liquid level detection part 11 measuring a distance to a liquid level LS in a cleaning chamber 2 of vacuum defatting cleaning equipment 1; a reception part 12 collecting information about the distance measured by the liquid level detection part 11; an operation part 13 performing arithmetic processing of the time change of distance to the liquid level based on the information collected by the reception part 12; and a determination part 14 determining the packing mode condition of the material W to be treated based on the result of arithmetic processing in the operation part 13.SELECTED DRAWING: Figure 2

Description

The present invention relates to a measuring device for confirming the packing shape of an object to be processed and a heat treatment system including the device.

Most iron parts are washed after forging or casting to remove stains adhering to the surface of the parts, followed by heat treatment such as quenching or annealing (see Patent Documents 1 and 2). Above all, when the quenching process is performed, the heated parts are instantly cooled in a quenching tank filled with a refrigerant such as oil or water. At that time, the cooling step using the refrigerant is performed by immersing a large number of parts in the refrigerant in the tank at one time.

Therefore, since the contact time with the refrigerant differs depending on the installation location of the parts in the tank, the cooling rate also changes between the individual parts. As a result, the contact state between the refrigerant and the parts is greatly affected by the installation location of the parts in the tank, in other words, the size of the parts at the time of cooling, the installation form, the number of parts, and the like.

As for the installation form of the parts during cooling after quenching, the parts in the cleaning process of the previous process are often used as they are. That is, by grasping the size and number of parts in the cleaning process, the installation form of the parts is determined, so that the cooling effect during the quenching process, which is the subsequent process, can be roughly estimated.

Japanese Unexamined Patent Publication No. 6-57468 Japanese Unexamined Patent Publication No. 2000-167498

However, the material, total weight, individual size and shape of the parts to be hardened can be grasped at the time of cleaning, which is the previous process, but even if the number of parts is the same, the loading form of each part, that is, the packing style, is determined for each process. May differ. For example, FIGS. 3 to 6 show installation modes when the same quantity of parts W are loaded in the same cleaning chamber 2 in different packing styles. As shown in FIGS. 3 to 6, the total number of objects to be processed W loaded in the cleaning chamber 2 is 36, but the objects to be processed in the cleaning chamber 2 in each of the width direction, the depth direction, and the height direction. When the number of processed objects W is different, the loading form of the entire processed object W also changes.

That is, in the cleaning process of the parts and the subsequent quenching process, if the packaging of the parts is different for each process, the cooling effect after the quenching process changes greatly for each process even if the material and quantity of the parts are the same.

Therefore, according to the present invention, it is possible to suppress variations in the cooling effect during the quenching process, which is a subsequent process, by accurately measuring the installation mode (packaging form) such as the size and quantity of the object to be processed in the processing chamber such as a cleaning device. An object of the present invention is to provide a package shape measuring device for an object to be processed and a heat treatment system having the device.

The liquid level measuring device of the present invention measures the distance to the liquid level in the container (cleaning room) in which the object to be processed is installed when the device for measuring the packing shape of the object to be processed is installed in a cleaning device provided with a cleaning room. A detector, a receiver that collects information about the distance measured by the liquid level detector, a calculator that calculates the time change of the distance to the liquid level based on the information about the measured distance collected by the receiver, and the same calculation. It is configured to have a determination unit for determining the state of the package of the object to be processed from the result of arithmetic processing by the unit.

The liquid level detection unit may be any liquid level detection device that detects changes in the liquid level using any of infrared rays, ultrasonic waves, LEDs, lasers, and floats. Further, the heat treatment system may be composed of a vacuum degreasing cleaning device equipped with this packing shape measuring device and a heat treatment device provided with an oil tank for quenching the object to be processed.

In the package shape measuring device of the present invention, for example, the liquid level change of the cleaning liquid in the cleaning chamber of the cleaning device is measured by a liquid level sensor or the like at predetermined time intervals, and the time change of the liquid level is calculated (calculated). From the calculated time change of the liquid level, the cross-sectional change in the height direction in the cleaning chamber can be accurately grasped, and the installation mode of the object to be treated can be estimated. Utilizing the result, it is possible to suppress the variation in the cooling effect between products in the quenching process which is a subsequent process.

Further, regarding the invention of the heat treatment system composed of the vacuum degreasing cleaning device having the packing shape measuring device and the heat treatment device having the oil tank, the information on the packing shape of the object to be processed measured by using the packing shape measuring device is obtained in the subsequent process. Since it can be reflected in the processing conditions at the time of a certain quenching process, it is possible to always perform a uniform quenching process on the object to be processed regardless of the skill of the operator.

It is a schematic cross-sectional view of the vacuum degreasing cleaning apparatus 1 which has the packing shape measuring apparatus 10 of this invention. FIG. 5 is a cross-sectional view taken along the line XX shown in FIG. It is a schematic diagram which shows the loading state (first form) of the object W to be processed. It is a schematic diagram which shows the loading state (second form) of the object W to be processed. It is a schematic diagram which shows the loading state (third form) of the object W to be processed. It is a schematic diagram which shows the loading state (4th form) of the object W to be processed.

The form of the package shape measuring device for the object to be processed according to the present invention will be described with reference to the drawings. FIG. 1 is a schematic cross-sectional view showing an embodiment when the packing shape measuring device 10 of the present invention is installed in the vacuum degreasing cleaning device 1, and FIG. 2 is a sectional view taken along line XX of the vacuum degreasing cleaning device 1 shown in FIG. Is. The vacuum degreasing cleaning device 1 shown in FIG. 1 discharges the cleaning chamber 2 that internally cleans a large number of objects W to be processed, the pipe P1 that supplies the cleaning liquid L to the cleaning chamber 2, and the cleaning liquid L in the cleaning chamber 2 to the outside. It is provided with a pipe P2 to be used, a valve V capable of freely adjusting the discharge amount of the cleaning liquid L in the pipe P2, a vacuum pump (not shown) for creating a depressurized atmosphere in the cleaning chamber 2.

In the present embodiment, the liquid level detection unit 11 forming a part of the package shape measuring device 10 is installed above the cleaning chamber 2 as shown in FIGS. 1 and 2. The liquid level detection unit 11 detects the liquid level LS of the cleaning liquid L in the cleaning chamber 2 and instantly measures the distance between the liquid level detection unit 11 and the liquid level LS.

Further, as shown in FIG. 2, the liquid level detection unit 11 is connected to the reception unit 12, the calculation unit 13, and the determination unit 14 outside the cleaning chamber 10 via a wired or wireless telecommunication means, and the set thereof is used. The package shape measuring device 10 is formed.

When the liquid level detection unit 11 is, for example, a liquid level sensor, the distance between the liquid level LS of the cleaning liquid L supplied to the cleaning chamber 2 and the sensor (liquid level detection unit 11) can be measured. The distance between the liquid level LS and the sensor (liquid level detection unit 11) can be measured at predetermined time intervals such as every 0.1 second or every 10 seconds. Information (data) regarding the distance to the liquid level measured by the liquid level detecting unit 11 is once sent to the receiving unit 12 by wire or wirelessly, and the measurement result is collected there.

The measured distance information sent to the receiving unit 12 is arithmetically processed by the arithmetic unit 13 as a time change (increase amount per unit time) of the collected distance information. The determination unit 14 determines (determines) the state of the package of the object to be processed W in the cleaning chamber 2 from the calculation result processed by the calculation unit 13.

In addition to the liquid level sensor shown in FIG. 1, the liquid level detection unit constituting the package shape measuring device of the present invention includes a float or the like in addition to sensors using various methods such as infrared rays, ultrasonic waves, LEDs, and lasers. The device is not limited to these devices as long as it can immediately measure the distance between the liquid level detector and the liquid level, such as the measuring device used.

1 Vacuum degreasing cleaning device 2 Cleaning room 10 Package shape measuring device 11 Liquid level detection unit 12 Receiver 13 Calculation unit 14 Judgment unit L Cleaning liquid LS Liquid level P1, P2 Piping V valve W Processed object

Claims (3)

A liquid level detection unit that measures the distance to the liquid level in a container in which an object to be processed is installed, a receiving unit that collects information on the distance measured by the liquid level detecting unit, and a receiving unit that collects information. It has a calculation unit that calculates the time change of the distance to the liquid level based on the information, and a determination unit that determines the state of the package of the object to be processed from the result of the calculation processing by the calculation unit. A device for measuring the packing shape of an object to be processed. The processed object according to claim 1, wherein the liquid level detecting unit is a liquid level detecting device that detects a change in the liquid level using any one of infrared rays, ultrasonic waves, LEDs, lasers, and floats. Package shape measuring device for objects. It is characterized by having a vacuum degreasing cleaning device provided with the package shape measuring device for the object to be processed according to claim 1 or 2, and a heat treatment device provided with an oil tank for quenching the object to be processed. Heat treatment system.

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