JP2006175499A - Method and device for manufacturing powder compact - Google Patents

Method and device for manufacturing powder compact Download PDF

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JP2006175499A
JP2006175499A JP2004373228A JP2004373228A JP2006175499A JP 2006175499 A JP2006175499 A JP 2006175499A JP 2004373228 A JP2004373228 A JP 2004373228A JP 2004373228 A JP2004373228 A JP 2004373228A JP 2006175499 A JP2006175499 A JP 2006175499A
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molded product
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JP4694193B2 (en
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Hideo Sato
秀雄 佐藤
Masaru Kobayashi
勝 小林
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Mitsubishi Materials Techno Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a method and a device for manufacturing a powder compact capable of enhancing the productivity while maintaining the same accuracy as the accuracy in a case in which the weight of the total powder compacts is measured. <P>SOLUTION: In the method for manufacturing the powder compact by using a die installed on a mechanical press, the pressure of the press is detected during the molding to determine whether or not the pressure is within a preset range of the limited pressure (S203), the weight of the powder compact is measured when the pressure is determined to be outside the range of the limited pressure (S206), it is determined whether or not the weight is within the range of the specified weight (S207), the powder compact determined to be within the range of the limited pressure or the range of the specified weight is accepted (S204), and the powder compact determined to be outside the range of the specified weight is rejected (S209). <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は、粉末成形品の製造方法及び製造装置に関する。   The present invention relates to a method for manufacturing a powder molded product and a manufacturing apparatus.

従来、粉末成形装置は、金型内に充填された粉末材料を上パンチと下パンチによって圧縮し成形品を成形するものである。このとき、金型内に充填される粉末材料の充填量は、金型内の充填高さ(リフト量)、すなわち体積で管理されているため、成形品の重量にばらつきが生じやすい。このため、決められた数量の成形品の中からサンプルを抜き取り、重量を測定し、規格に適合しない成形品が検出された場合には、その結果を粉末材料の充填量にフィードバックし、規格に適合する成形品が得られるよう調整を図っている。(例えば、特許文献1参照)
実開平5−16216号公報
Conventionally, a powder molding apparatus compresses a powder material filled in a mold with an upper punch and a lower punch to form a molded product. At this time, since the filling amount of the powder material filled in the mold is controlled by the filling height (lift amount), that is, the volume in the mold, the weight of the molded product tends to vary. For this reason, a sample is extracted from the determined number of molded products, the weight is measured, and if a molded product that does not conform to the standard is detected, the result is fed back to the filling amount of the powder material and Adjustments are made to obtain a suitable molded product. (For example, see Patent Document 1)
Japanese Utility Model Laid-Open No. 5-16216

しかしながら、重量を測定して判定する手法は、正確に成形品の精度を確認することができるが、サンプルを天秤に載せたのち、サンプルが秤量されるまでに時間を要するため、全数秤量するのでは生産性の悪化を招くという問題があった。   However, the method of measuring and determining the weight can accurately check the accuracy of the molded product, but it takes time until the sample is weighed after placing the sample on the balance. Then, there was a problem that the productivity deteriorated.

一方、例えば20個の成形品に対して1個のサンプルを秤量して生産管理する場合には、生産精度の低下を招くという問題があった。   On the other hand, for example, in the case where one sample is weighed and managed for production with respect to 20 molded products, there is a problem that the production accuracy is reduced.

本発明は、上記事情を鑑み、全数重量測定した場合と同じ精度を維持しつつ生産性の向上を図ることができる粉末成形品の製造方法及び製造装置を提供することを目的とする。   An object of this invention is to provide the manufacturing method and manufacturing apparatus of a powder molded product which can aim at the improvement of productivity, maintaining the same precision as the case where all the weights are measured in view of the said situation.

上記の目的を達するために、この発明は以下の手段を提供している。   In order to achieve the above object, the present invention provides the following means.

請求項1に係る発明は、機械式プレスに設置した金型を用いて粉末成形品を製造する方法であって、成形時にプレスの加圧力を検出して、該加圧力が予め設定した限定加圧力範囲内であるか否かを判定し、該限定加圧力範囲外と判定された場合に当該成形品の重量を測定して、該重量が規定重量範囲内であるか否かを判定し、これら限定加圧力範囲内又は規定重量範囲内と判定された成形品を良品とし、規定重量範囲外と判定された成形品を不良品とすることを特徴とする。  The invention according to claim 1 is a method of manufacturing a powder molded product using a mold installed in a mechanical press, wherein the pressing force is detected at the time of molding, and the pressing force is set in advance by a limited pressure. Determining whether the pressure is within the range, measuring the weight of the molded article when determined to be outside the limited pressure range, determining whether the weight is within the specified weight range; The molded product determined to be within the limited pressure range or the specified weight range is regarded as a non-defective product, and the molded product determined to be outside the specified weight range is defined as a defective product.

すなわち、機械式プレスの場合、一定高さまでプレスされるので、パンチに作用する圧力と金型内の粉末重量とがほぼ比例関係になる。そこで、この成形時に検出されるプレスの加圧力を利用して、秤量判定においても確実に良品とされる限定加圧力範囲を予め設定し、この限定加圧力範囲の加圧力で成形された成形品はその時点で良品とし、限定加圧力範囲外の加圧力で成形された成形品に対してのみ重量を測定して全ての成形品の良品、不良品選別を行うことができる。   That is, in the case of a mechanical press, since the press is performed to a certain height, the pressure acting on the punch and the weight of the powder in the mold are almost proportional. Therefore, by using the pressing force detected at the time of molding, a limited pressurizing range that is surely regarded as a non-defective product in weighing determination is set in advance, and a molded product molded with the pressurizing force within this limited pressurizing range. Is a good product at that time, and the weight of only the molded product molded with the pressure outside the limited pressure range can be measured to select the good product and defective product of all the molded products.

請求項2に係る発明は、請求項1記載の粉末成形品の製造方法において、前記限定加圧力範囲よりも大きい第2加圧力範囲を設定しておき、成形時の加圧力が第2加圧力範囲外であると判定された場合には不良品とすることを特徴とする。  According to a second aspect of the present invention, in the method for manufacturing a powder molded product according to the first aspect, a second pressing force range that is larger than the limited pressing force range is set, and the pressing force during molding is the second pressing force. If it is determined to be out of the range, it is a defective product.

この発明に係る粉末成形品の製造方法においては、確実に良品とされる限定加圧力範囲に加えて、その範囲外の加圧力が検出された場合には確実に不良品とされる第2加圧力範囲を設定することにより、成形時の加圧力の検出によって確実に良品とされる成形品と、確実に不良品とされる成形品とを選別することができる。また、限定加圧力範囲外で、かつ第2加圧力範囲内の加圧力で成形された成形品に対してのみ重量を測定して全ての成形品の良品、不良品選別を行うことができる。   In the method of manufacturing a powder molded product according to the present invention, in addition to the limited pressure range that is definitely regarded as a non-defective product, when a pressure outside that range is detected, the second pressure that is reliably defective is detected. By setting the pressure range, it is possible to select a molded product that is definitely a good product and a molded product that is definitely a defective product by detecting the pressure applied during molding. Further, it is possible to perform selection of non-defective products and defective products of all molded products by measuring the weight only for molded products that are formed outside the limited pressure range and with a pressure within the second pressure range.

請求項3に係る発明は、請求項1記載の粉末成形品の製造方法において、前記規定重量範囲外と判定された場合に、前記金型内への粉末材料の充填高さをフィードバック制御することを特徴とする。  According to a third aspect of the present invention, in the method for manufacturing a powder molded product according to the first aspect, when it is determined that the powder is out of the specified weight range, the filling height of the powder material into the mold is feedback controlled. It is characterized by.

この発明に係る粉末成形品の製造方法においては、規定重量範囲外であることによって不良品が特定され、不良品が発生した場合には、充填高さがフィードバック制御されるので、一定重量の成形品を連続的に成形することができる。   In the method of manufacturing a powder molded product according to the present invention, a defective product is specified by being out of the specified weight range, and when a defective product is generated, the filling height is feedback-controlled, so that a constant weight molding is performed. The product can be formed continuously.

請求項4に係る発明は、請求項2記載の粉末成形品の製造方法において、前記規定重量範囲外又は前記第2加圧力範囲外と判定された場合に、前記金型内への粉末材料の充填高さをフィードバック制御することを特徴とする。  According to a fourth aspect of the present invention, in the method for manufacturing a powder molded product according to the second aspect, when it is determined that the powder is out of the specified weight range or out of the second pressure range, the powder material into the mold The filling height is feedback-controlled.

この発明に係る粉末成形品の製造方法においては、規定重量範囲又は第2加圧力範囲の範囲外であることによって不良品が特定され、不良品が発生した場合には、充填高さがフィードバック制御されるので、一定重量の成形品を連続的に成形することができる。   In the method of manufacturing a powder molded product according to the present invention, if a defective product is specified by being out of the specified weight range or the second pressure range, and the defective product is generated, the filling height is feedback controlled. Therefore, a molded article having a constant weight can be continuously formed.

請求項5に係る発明は、機械式プレスに設置した金型を用いて粉末成形品を製造する装置であって、成形時にプレスの加圧力を検出する圧力検出手段と、該加圧力が予め設定した限定加圧力範囲内であるか否かを判定する圧力判定手段と、該限定加圧力範囲外と判定された場合に当該成形品の重量を測定する重量測定手段と、該重量が規定重量範囲内であるか否かを判定する重量判定手段と、該重量判定手段によって前記規定重量範囲外と判定された成形品を不良品として排出する不良品排出手段とを備えることを特徴とする。  The invention according to claim 5 is an apparatus for producing a powder molded product using a mold installed in a mechanical press, wherein pressure detecting means for detecting the pressing force of the press at the time of molding, and the pressing force is preset. Pressure determining means for determining whether or not the pressure is within the limited pressurizing range, weight measuring means for measuring the weight of the molded product when it is determined that the weight is outside the limited pressurizing range, and the weight is within a specified weight range. A weight determination unit that determines whether or not the product is within the specified weight range, and a defective product discharge unit that discharges the molded product determined to be out of the specified weight range by the weight determination unit as a defective product.

この発明に係る粉末成形品の製造装置においては、圧力検出手段によって成形時の加圧力を検出し、検出された加圧力が限定加圧力範囲内であるか否かを圧力判定手段によって判定し、限定加圧力範囲内と判定された成形品を良品として選別することができる。また、限定加圧力範囲外と判定された成形品は、重量測定手段によって重量が測定され、重量が規定範囲内であるか否かを重量判定手段によって判定し、規定重量範囲外と判定された成形品を不良品として選別することができる。さらに、不良品とされた成形品を不良品排出手段によって排除することができる。この場合、圧力判定手段により限定加圧力範囲外であると判定された成形品に対してのみ重量を測定して全ての成形品の良品、不良品選別を行うことができる。   In the powder molded product manufacturing apparatus according to the present invention, the pressure detection means detects the applied pressure at the time of molding, and the pressure determining means determines whether or not the detected applied pressure is within the limited applied pressure range, A molded product determined to be within the limited pressure range can be selected as a non-defective product. In addition, the molded product determined to be out of the limited pressure range is measured by the weight measuring unit, and the weight determining unit determines whether the weight is within the specified range, and is determined to be out of the specified weight range. The molded product can be selected as a defective product. Furthermore, the molded product determined as a defective product can be eliminated by the defective product discharging means. In this case, the weight can be measured only for the molded product determined to be out of the limited pressure range by the pressure determining means, and the non-defective product and the defective product can be selected.

請求項6に係る発明は、請求項5記載の粉末成形品の製造装置において、成形時の加圧力が前記限定加圧力範囲より大きい第2加圧力範囲内であるか否かを判定する第2圧力判定手段を備え、前記不良品排出手段は、さらに、前記第2圧力判定手段により第2加圧力範囲外であると判定された成形品をも排出する構成であることを特徴とする。  According to a sixth aspect of the present invention, in the powder molded product manufacturing apparatus according to the fifth aspect of the present invention, a second judgment is made as to whether or not the pressure during molding is within a second pressure range that is greater than the limited pressure range. Pressure determining means is provided, and the defective product discharging means is further configured to discharge a molded product determined to be out of the second pressure range by the second pressure determining means.

この発明に係る粉末成形品の製造装置においては、圧力検出手段によって検出された成形時の加圧力が、第2加圧力判定手段によって第2加圧力範囲内であるか否かを判定し、第2加圧力範囲外と判定された成形品を不良品として選別することができる。また、第2加圧力判定手段により不良品とされた成形品をも不良品排出手段によって排除することができる。この場合、限定加圧力範囲外および第2加圧力範囲内となる成形品に対してのみ重量を測定して全ての成形品の良品、不良品選別を行うことができる。   In the apparatus for manufacturing a powder molded product according to the present invention, it is determined whether or not the pressing force at the time of molding detected by the pressure detecting means is within the second pressing force range by the second pressing force determining means. The molded product determined to be out of the 2 pressure range can be selected as a defective product. In addition, the molded product that is determined to be defective by the second pressure determining unit can be removed by the defective product discharging unit. In this case, it is possible to measure the quality of only the molded products that are outside the limited pressure range and within the second pressure range, and perform selection of non-defective products and defective products of all molded products.

請求項7に係る発明は、請求項5記載の粉末成形品の製造装置において、前記重量判定手段によって前記規定重量範囲外と判定された成形品の重量又は成形時の加圧力を基に、前記金型内への粉末材料の充填高さをフィードバック制御するフィードバック制御手段を有していることを特徴とする。  According to a seventh aspect of the present invention, in the powder molded product manufacturing apparatus according to the fifth aspect, based on the weight of the molded product determined to be out of the specified weight range by the weight determining means or the applied pressure at the time of molding, It has a feedback control means for feedback control of the filling height of the powder material into the mold.

この発明に係る粉末成形品の製造装置においては、重量判定手段によって規定重量範囲外となる不良品が特定され、不良品が発生した場合には、フィードバック制御手段によって充填高さがフィードバック制御されるので、一定重量の成形品を連続的に成形することができる。   In the powder molded product manufacturing apparatus according to the present invention, a defective product that falls outside the specified weight range is specified by the weight determination unit, and when a defective product is generated, the filling height is feedback controlled by the feedback control unit. Therefore, a molded product having a constant weight can be continuously formed.

請求項8に係る発明は、請求項6記載の粉末成形品の製造装置において、前記重量判定手段又は前記第2圧力判定手段によって前記規定重量範囲外又は前記第2加圧力範囲外と判定された成形品の重量及び成形時の加圧力を基に、前記金型内への粉末材料の充填高さをフィードバック制御するフィードバック制御手段を有していることを特徴とする。  The invention according to claim 8 is the powder molded product manufacturing apparatus according to claim 6, wherein the weight determination unit or the second pressure determination unit determines that the weight is out of the specified weight range or out of the second pressure range. It is characterized by having feedback control means for feedback controlling the filling height of the powder material into the mold based on the weight of the molded product and the applied pressure at the time of molding.

この発明に係る粉末成形品の製造装置においては、重量判定手段又は第2圧力判定手段によって規定重量範囲又は第2加圧力範囲の2つの範囲外となる不良品が特定され、不良品が発生した場合には、フィードバック制御手段によって充填高さがフィードバック制御されるので、一定重量の成形品を連続的に成形することができる。   In the powder molded product manufacturing apparatus according to the present invention, a defective product that is outside the two ranges of the specified weight range or the second pressure range is specified by the weight determination unit or the second pressure determination unit, and a defective product is generated. In this case, since the filling height is feedback-controlled by the feedback control means, a molded product having a constant weight can be continuously formed.

請求項1に係る発明によれば、成形時に検出されるプレスの加圧力を利用して、秤量判定においても確実に良品とされる限定加圧力範囲を予め設定し、この限定加圧力範囲の加圧力で成形された成形品はその時点で良品とし、限定加圧力範囲外の加圧力で成形された成形品に対してのみ重量を測定して全ての成形品の良品、不良品選別を行うことができ、全数重量測定した場合と同じ精度を維持しつつ生産性の向上を図ることができる。   According to the first aspect of the invention, the pressurizing force detected at the time of molding is used to set in advance a limited pressurizing range that is surely regarded as a non-defective product even in the weighing determination. Molded products molded under pressure should be good products at that time, and only molded products molded with pressure outside the limited pressure range should be weighed to select all molded products. Therefore, productivity can be improved while maintaining the same accuracy as when all the weights are measured.

請求項2に係る発明によれば、確実に良品とされる限定加圧力範囲に加えて、その範囲外の加圧力が検出された場合には確実に不良品とされる第2加圧力範囲を設定し、成形時の加圧力の検出によって確実に良品とされる成形品と、確実に不良品とされる成形品とを選別することができる。また、限定加圧力範囲外で、かつ第2加圧力範囲内の加圧力で成形された成形品に対してのみ重量を測定して全ての成形品の良品、不良品選別を行うことができるため、全数重量測定した場合と同じ精度を維持しつつ生産性の向上を図ることができる。   According to the second aspect of the invention, in addition to the limited pressurizing range that is surely regarded as a non-defective product, the second pressurizing range that is reliably defective when a pressurizing force outside that range is detected. It is possible to select a molded product that is definitely a good product and a molded product that is definitely a defective product by setting and detecting the pressure applied during molding. In addition, since it is possible to select all non-defective products and defective products by measuring the weight only for molded products molded outside the limited pressure range and with a pressure within the second pressure range. Further, productivity can be improved while maintaining the same accuracy as when all the weights are measured.

請求項3に係る発明によれば、規定重量範囲外であることによって不良品が特定され、不良品が発生した場合には、充填高さがフィードバック制御されるので、一定重量の成形品を連続的に成形することができ、生産精度及び生産性の向上を図ることができる。   According to the invention according to claim 3, when a defective product is specified by being out of the specified weight range, and a defective product is generated, the filling height is feedback-controlled, so that a molded product having a constant weight is continuously fed. Therefore, the production accuracy and productivity can be improved.

請求項4に係る発明によれば、規定重量範囲又は第2加圧力範囲の範囲外であることによって不良品が特定され、不良品が発生した場合には、充填高さがフィードバック制御されるので、一定重量の成形品を連続的に成形することができ、生産精度及び生産性の向上を図ることができる。   According to the fourth aspect of the present invention, when a defective product is specified by being out of the specified weight range or the second pressure range, and the defective product is generated, the filling height is feedback-controlled. Thus, a molded product having a constant weight can be continuously formed, and production accuracy and productivity can be improved.

請求項5に係る発明によれば、圧力検出手段によって成形時の加圧力を検出し、検出された加圧力が限定加圧力範囲内であるか否かを圧力判定手段によって判定し、限定加圧力範囲内と判定された成形品を良品として選別することができる。また、限定加圧力範囲外と判定された成形品は、重量測定手段によって重量が測定され、重量が規定範囲内であるか否かを重量判定手段によって判定し、規定重量範囲外と判定された成形品を不良品として選別することができる。さらに、不良品とされた成形品を不良品排出手段によって排除することができる。この場合、圧力判定手段により限定加圧力範囲外であると判定された成形品に対してのみ重量を測定して全ての成形品の良品、不良品選別を行うことができるため、全数重量測定した場合と同じ精度を維持しつつ生産性の向上を図ることができる。   According to the fifth aspect of the present invention, the pressure detection means detects the pressing force during molding, the pressure determination means determines whether or not the detected pressing force is within the limited pressing force range, and the limited pressing force is determined. A molded product determined to be within the range can be selected as a non-defective product. In addition, the molded product determined to be out of the limited pressure range is measured by the weight measuring unit, and the weight determining unit determines whether the weight is within the specified range, and is determined to be out of the specified weight range. The molded product can be selected as a defective product. Furthermore, the molded product determined as a defective product can be eliminated by the defective product discharging means. In this case, since the weight can be measured only for the molded product determined to be out of the limited pressure range by the pressure determining means and all the molded products can be selected as good and defective, the total weight was measured. Productivity can be improved while maintaining the same accuracy as the case.

請求項6に係る発明によれば、圧力検出手段によって検出された成形時の加圧力が、第2加圧力判定手段によって第2加圧力範囲内であるか否かを判定し、第2加圧力範囲外と判定された成形品を不良品として選別することができる。また、第2加圧力判定手段により不良品とされた成形品をも不良品排出手段によって排除することができる。この場合、限定加圧力範囲外および第2加圧力範囲内となる成形品に対してのみ重量を測定して全ての成形品の良品、不良品選別を行うことができるため、全数重量測定した場合と同じ精度を維持しつつ生産性の向上を図ることができる。   According to the invention which concerns on Claim 6, it determines whether the applied pressure at the time of shaping | molding detected by the pressure detection means is in a 2nd applied pressure range by a 2nd applied pressure determination means, and 2nd applied pressure A molded product determined to be out of the range can be selected as a defective product. In addition, the molded product that is determined to be defective by the second pressure determining unit can be removed by the defective product discharging unit. In this case, when the weight of all molded products can be selected by measuring the weight only for the molded products that are outside the limited pressure range and within the second pressure range, the total weight measurement is possible. As a result, productivity can be improved while maintaining the same accuracy.

請求項7に係る発明によれば、重量判定手段によって規定重量範囲外となる不良品が特定され、不良品が発生した場合には、フィードバック制御手段によって充填高さがフィードバック制御されるので、一定重量の成形品を連続的に成形することができ、生産精度及び生産性の向上を図ることができる。   According to the seventh aspect of the present invention, when a defective product that is out of the specified weight range is specified by the weight determination means and a defective product is generated, the filling height is feedback-controlled by the feedback control means. A heavy molded product can be continuously formed, and production accuracy and productivity can be improved.

請求項8に係る発明によれば、重量判定手段又は第2圧力判定手段によって規定重量範囲又は第2加圧力範囲の2つの範囲外となる不良品が特定され、不良品が発生した場合には、フィードバック制御手段によって充填高さがフィードバック制御されるので、一定重量の成形品を連続的に成形することができ、生産精度及び生産性の向上を図ることができる。   According to the invention according to claim 8, when a defective product that is out of the two ranges of the specified weight range or the second pressure range is specified by the weight determination unit or the second pressure determination unit, and a defective product is generated. Since the filling height is feedback-controlled by the feedback control means, a molded product having a constant weight can be continuously formed, and the production accuracy and productivity can be improved.

以下、図1から図4を参照し、本発明の一実施形態に係る粉末成形品の製造方法及び製造装置について説明する。   Hereinafter, with reference to FIGS. 1-4, the manufacturing method and manufacturing apparatus of the powder molded product which concern on one Embodiment of this invention are demonstrated.

本発明の一実施形態は、機械式プレス(図示例の場合はクランクプレス)Tに設置した金型を用いて粉末成形品を成形する粉末成形装置に関するものである。   One embodiment of the present invention relates to a powder molding apparatus that molds a powder molded product using a mold installed in a mechanical press (crank press in the illustrated example) T.

図1から図2に示すように、粉末成形装置1は、支持テーブル2に固定されて充填部3を形成するダイ4と、ダイ4の上方に設けられ、充填部3に向かって進退可能に支持された上パンチ5と、充填部3に対して相対的に移動可能に取り付けられ、ダイ4とともに充填部3を画成する下パンチ6と、ダイ4の上面を摺動するフィーダーカップ7とから構成されている。この構成においては、ダイ4と上パンチ5と下パンチ6を合わせて金型8とされる。また、図1中の二点破線で囲まれた支持テーブル2と金型8とフィーダーカップ7が図2に示される粉末成形部9とされる。   As shown in FIGS. 1 to 2, the powder molding apparatus 1 is fixed to a support table 2 to form a filling portion 3, and is provided above the die 4 so as to be able to advance and retreat toward the filling portion 3. A supported upper punch 5, a lower punch 6 that is attached to the filling portion 3 so as to be movable relative to the filling portion 3 and defines the filling portion 3 together with the die 4, and a feeder cup 7 that slides on the upper surface of the die 4. It is composed of In this configuration, the die 4, the upper punch 5, and the lower punch 6 are combined into a mold 8. Further, the support table 2, the mold 8 and the feeder cup 7 surrounded by a two-dot broken line in FIG. 1 serve as the powder molding unit 9 shown in FIG. 2.

支持テーブル2は、ロッド2aによりヨークプレート2bに固定されており、ヨークプレート2bは、ヨークプレート2bを上下動させる下ラム2cに固定されている。また、支持テーブル2には、適宜手段によって搬送された成形品の重量を測定する重量測定手段10が連続的に設けられ、重量測定手段10には、測定した重量を判定する重量判定手段11が接続されているとともに、重量判定手段11によって不良品と判定された成形品を排出する不良品排出手段12が設けられている。   The support table 2 is fixed to the yoke plate 2b by a rod 2a, and the yoke plate 2b is fixed to a lower ram 2c that moves the yoke plate 2b up and down. Further, the support table 2 is continuously provided with a weight measuring means 10 for measuring the weight of the molded product conveyed by appropriate means, and the weight measuring means 10 has a weight determining means 11 for determining the measured weight. A defective product discharging unit 12 is provided which is connected and discharges a molded product determined to be defective by the weight determining unit 11.

上パンチ5は、上パンチ押え5aによって上パンチプレート5bに固定されており、上パンチプレート5bは、上パンチプレート5bを上下動させる上ラム5cに固定されている。また、上パンチプレート5bには、成形時に上パンチ5が粉末材料Pに付加する加圧力が検出される圧力検出手段13が設けられ、圧力検出手段13には、検出した加圧力を判定する圧力判定手段14と第2加圧力判定手段15とが接続されている。   The upper punch 5 is fixed to the upper punch plate 5b by an upper punch presser 5a, and the upper punch plate 5b is fixed to an upper ram 5c that moves the upper punch plate 5b up and down. Further, the upper punch plate 5b is provided with pressure detection means 13 for detecting the pressure applied by the upper punch 5 to the powder material P during molding, and the pressure detection means 13 includes a pressure for determining the detected pressure. The determination means 14 and the second applied pressure determination means 15 are connected.

下パンチ6は、下パンチプレート6aに固定されており、下パンチプレート6aは、ボルスタ6bに固定されている。また、下パンチプレート6aには、前述の圧力判定手段14と第2圧力判定手段15および重量判定手段11の結果をフィードバック制御するフィードバック制御手段16に接続され金型8内の充填高さH(リフト量)の調整を行う充填高さ調整手段17が設けられている。   The lower punch 6 is fixed to the lower punch plate 6a, and the lower punch plate 6a is fixed to the bolster 6b. Further, the lower punch plate 6a is connected to a feedback control means 16 that feedback-controls the results of the pressure judgment means 14, the second pressure judgment means 15 and the weight judgment means 11, and the filling height H (in the mold 8) A filling height adjusting means 17 for adjusting the lift amount) is provided.

フィーダーカップ7は、下面を開口した箱型に形成されており、プレスの駆動手段に連結され支持プレート2の上面2dに摺動可能に配されている。また、フィーダーカップ7の上壁部7aには可撓性を有する供給管7bが接続されており、この供給管7bのフィーダーカップ7と対向する端部7cには、フィーダーカップ7内部に粉末材料Pを供給するホッパー7dが設けられている。   The feeder cup 7 is formed in a box shape having an open bottom surface, and is slidably disposed on the top surface 2d of the support plate 2 connected to a driving means of a press. Further, a flexible supply pipe 7b is connected to the upper wall portion 7a of the feeder cup 7, and an end portion 7c of the supply pipe 7b facing the feeder cup 7 has a powder material inside the feeder cup 7. A hopper 7d for supplying P is provided.

ついで、上記の構成からなる粉末成形装置1の粉末成形品の製造方法について説明する。  Next, a method for manufacturing a powder molded product of the powder molding apparatus 1 having the above-described configuration will be described.

上パンチ5を上昇させダイ4から離した状態で、フィーダーカップ7を充填部3の上面側に位置するように配置する。このとき、支持テーブル2と下パンチ6は、下ラム2cによって支持テーブル2が下方に変位されて、支持テーブル2の上面2dと下パンチ6の上面6cとが一致した状態とされている。   With the upper punch 5 raised and away from the die 4, the feeder cup 7 is disposed so as to be positioned on the upper surface side of the filling portion 3. At this time, the support table 2 and the lower punch 6 are in a state where the upper surface 2d of the support table 2 and the upper surface 6c of the lower punch 6 coincide with each other because the support table 2 is displaced downward by the lower ram 2c.

ついで、下ラム2cによってヨークプレート2bを上方に変位させ、支持テーブル2を上方に位置させる。支持テーブル2が上方に変位されると下パンチ6が相対的に下方に位置することとなり、充填部3が画成される。また、支持テーブル2の変位量は、所定の充填高さH(リフト量)となるように調整される。   Next, the yoke plate 2b is displaced upward by the lower ram 2c, and the support table 2 is positioned upward. When the support table 2 is displaced upward, the lower punch 6 is positioned relatively below, and the filling portion 3 is defined. Further, the displacement amount of the support table 2 is adjusted to be a predetermined filling height H (lift amount).

充填部3が画成されるとともに、充填部3の上面側に位置されたフィーダーカップ7内部の粉末材料Pが充填部3に落下して供給される。充填が完了した段階で、フィーダーカップ7を充填部3の上面側から支持テーブル2上を摺動させつつ、後退させる。このとき、供給された粉末材料Pの上面が、支持テーブル2に当接するフィーダーカップ7の側壁部7eにより支持テーブル2の上面2dと一致するよう摺りきられ、これにより、充填部3に供給された粉末材料Pを所定の充填量とすることができる。   The filling unit 3 is defined, and the powder material P in the feeder cup 7 positioned on the upper surface side of the filling unit 3 is dropped and supplied to the filling unit 3. When the filling is completed, the feeder cup 7 is moved backward while sliding on the support table 2 from the upper surface side of the filling portion 3. At this time, the upper surface of the supplied powder material P is slid so as to coincide with the upper surface 2d of the support table 2 by the side wall portion 7e of the feeder cup 7 that comes into contact with the support table 2, thereby being supplied to the filling unit 3. The powder material P can be made into a predetermined filling amount.

ついで、上パンチ5をダイ4に嵌合させつつ一定高さまで下降させるとともに、下パンチ6と上パンチ5とにより粉末材料Pを圧縮して固め、成形品を成形する。このとき、上パンチ5が一定高さまで降下して粉末材料Pを圧縮する際の加圧力が圧力検出手段13により検出される。検出された加圧力は、詳細は後述の圧力判定手段14と第2圧力判定手段15とによって成形品の判定に用いられる。   Next, the upper punch 5 is lowered to a certain height while being fitted to the die 4, and the powder material P is compressed and hardened by the lower punch 6 and the upper punch 5 to form a molded product. At this time, the pressure detection means 13 detects the pressure applied when the upper punch 5 is lowered to a certain height and compresses the powder material P. The detected pressure is used by the pressure determination means 14 and the second pressure determination means 15 described later in detail for determining the molded product.

その後、上パンチ5を上昇させるとともに、支持テーブル2を下方に変位させ、下パンチ6によって成形品が充填部3から抜き出される。抜き出された成形品は順次、適宜手段によって重量測定手段10に搬送される。このとき、圧力判定手段14によって良品と判定された成形品及び第2圧力判定手段15によって不良品と判定された成形品は、そのまま、重量測定手段10上を通過されるが、それ以外の成形品は、重量測定手段10によってその重量が測定される。この重量測定手段10によって測定された重量は、詳細は後述の重量判定手段11によって良否が判定される。  Thereafter, the upper punch 5 is raised, the support table 2 is displaced downward, and the molded product is extracted from the filling portion 3 by the lower punch 6. The extracted molded articles are sequentially conveyed to the weight measuring means 10 by appropriate means. At this time, the molded product determined to be non-defective by the pressure determining means 14 and the molded product determined to be defective by the second pressure determining means 15 are passed on the weight measuring means 10 as they are. The weight of the product is measured by the weight measuring means 10. The weight measured by the weight measuring means 10 is judged by a weight judging means 11 described later for details.

そして、この重量測定手段10を経由した各成形品のうち、第2圧力判定手段15及び重量判定手段11によって不良品と判定された成形品は、次の不良品排出手段12で排出される。  Of the molded products that have passed through the weight measuring unit 10, the molded products that are determined to be defective by the second pressure determining unit 15 and the weight determining unit 11 are discharged by the next defective product discharging unit 12.

ここで、圧力判定手段14と第2圧力判定手段15及び重量判定手段11によって不良品と判定された成形品の成形時の加圧力及び重量はフィードバック制御手段16によって充填高さ調整手段17にフィードバックされ、良品が成形されるように金型8内の充填高さH(リフト量)が調整される。  Here, the pressure and weight at the time of molding of the molded product determined to be defective by the pressure determining unit 14, the second pressure determining unit 15 and the weight determining unit 11 are fed back to the filling height adjusting unit 17 by the feedback control unit 16. Then, the filling height H (lift amount) in the mold 8 is adjusted so that a good product is molded.

このような成形サイクルが繰り返し行われ、複数の成形品が連続的に成形される。   Such a molding cycle is repeated, and a plurality of molded products are continuously molded.

ここで、図3を参照し、圧力判定手段14と第2圧力判定手段15及び重量判定手段11による成形品の良品、不良品の判定方法について説明する。   Here, with reference to FIG. 3, the determination method of the non-defective product of the molded product by the pressure determination means 14, the 2nd pressure determination means 15, and the weight determination means 11 is demonstrated.

図3に示す条件設定(S201)では、成形品の設計重量に許容誤差を加えた規定重量範囲を定め、ついで、この規定重量範囲内の成形品が確実に得られる成形時の加圧力範囲を限定加圧力範囲として設定する。また、その加圧力範囲外の加圧力で成形された成形品は、確実に規定重量範囲外となる第2加圧力範囲を設定する。これらの条件を設定したのち、粉末成形装置1により成形品の成形を行い、成形時の加圧力を圧力検出手段13によって成形品毎に測定する(S202)。   In the condition setting (S201) shown in FIG. 3, a specified weight range obtained by adding an allowable error to the design weight of the molded product is determined, and then the pressure range during molding in which a molded product within the specified weight range is reliably obtained is set. Set as the limited pressure range. In addition, a molded product molded with a pressure outside the pressure range is set with a second pressure range that is surely outside the specified weight range. After these conditions are set, the molded product is molded by the powder molding apparatus 1, and the pressure applied during molding is measured for each molded product by the pressure detection means 13 (S202).

ついで、成形品は、圧力判定手段14によって成形時の加圧力が限定加圧力範囲内であるか否かが判定される(S203)。加圧力が限定加圧力範囲内である場合には、成形品はその時点で良品として整列され(S204)、限定加圧力範囲外である場合には、第2圧力判定手段15によって第2加圧力範囲内であるか否かが判定される(S205)。第2加圧力範囲外である場合には、その時点で不良品として不良品排出手段12によって排出される(S209)。第2加圧力範囲内である場合には、成形品は良品、不良品どちらの可能性もあるため、重量測定手段10によって重量が測定され(S206)、重量判定手段11によって重量が規定重量範囲内であるか否かが判定される(S207)。重量が、規定重量範囲内である場合には成形品は良品として整列され(S204)、規定重量範囲外である場合には不良品として不良品排出手段12によって排出される(S207)。   Next, in the molded product, it is determined by the pressure determination means 14 whether or not the pressing force during molding is within the limited pressing force range (S203). If the applied pressure is within the limited applied pressure range, the molded products are aligned as good products at that time (S204). If the applied pressure is outside the limited applied pressure range, the second applied pressure is determined by the second pressure determining means 15. It is determined whether it is within the range (S205). If it is out of the second pressure range, it is discharged as a defective product by the defective product discharging means 12 at that time (S209). If it is within the second pressure range, the molded product may be either a good product or a defective product, so the weight is measured by the weight measuring means 10 (S206), and the weight is measured by the weight determining means 11 within the specified weight range. It is determined whether it is within (S207). If the weight is within the specified weight range, the molded product is aligned as a non-defective product (S204), and if it is outside the specified weight range, it is discharged as a defective product by the defective product discharging means 12 (S207).

ここで、不良品と判定される成形品が検出された場合には、不良品の重量及び成形時の加圧力がフィードバック制御手段16によって条件設定(S201)にフィードバックされ、この結果に基づき粉末材料の充填量、つまり充填高さH(リフト量)が調整され、以後不良品が成形されないよう調整される(S208)。   Here, when a molded product determined as a defective product is detected, the weight of the defective product and the pressing force at the time of molding are fed back to the condition setting (S201) by the feedback control unit 16, and based on this result, the powder material , That is, the filling height H (lift amount) is adjusted, and thereafter, the defective product is adjusted so as not to be molded (S208).

ついで、図4を参照し、限定加圧力範囲および第2加圧力範囲の設定例について説明する。  Next, a setting example of the limited pressure range and the second pressure range will be described with reference to FIG.

図4は、粉末成形装置1を使用し複数の成形品を連続的に成形したときの成形品の重量と成形時の加圧力を示すものである。ここで、縦軸は成形時の加圧力を示し、横軸は重量を示している。図4に示された成形品は、幅7mm、高さ11mm、奥行き7mmの立方体形状のものであり、設計重量が1.970gとされ、設計重量に対して±0.01gの重量誤差が許容されている。  FIG. 4 shows the weight of the molded product and the applied pressure at the time of molding when a plurality of molded products are continuously molded using the powder molding apparatus 1. Here, the vertical axis represents the pressing force during molding, and the horizontal axis represents the weight. The molded product shown in FIG. 4 is a cube having a width of 7 mm, a height of 11 mm, and a depth of 7 mm. The design weight is 1.970 g, and a weight error of ± 0.01 g is allowable with respect to the design weight. Has been.

横軸の重量1.960gから1.980gを示す破線で区切られた範囲が成形品を良品と判定する規定重量範囲であり、縦軸の実線で区切られた加圧力の範囲が、確実に成形品が良品と判定される限定加圧力範囲とされている。また、縦軸の一点破線で区切られた加圧力の範囲は、この範囲外の成形品が確実に不良品と判定される第2加圧力範囲とされている。  The range delimited by the broken line indicating the weight from 1.960 g to 1.980 g on the horizontal axis is the specified weight range for determining the molded product as a non-defective product, and the range of the pressing force delimited by the solid line on the vertical axis is surely molded. The limited pressure range is determined so that the product is determined to be non-defective. Moreover, the range of the pressurizing force delimited by the one-dot broken line on the vertical axis is a second pressurizing range in which a molded product outside this range is reliably determined as a defective product.

各種線で区切られ、AからFで示されたそれぞれの領域は、成形品の良品、不良品の区分を示している。   Each area indicated by A to F, which is divided by various lines, indicates a classification of a non-defective product and a defective product.

領域Aは、成形品が限定加圧力範囲内の加圧力で成形され、確実に良品と判定される領域を示している。また、領域Cは、成形時の加圧力が限定加圧力範囲内であるが規定重量範囲外となり、成形品が不良品と判定される領域を示している。   Region A indicates a region in which the molded product is molded with a pressure within the limited pressure range and is reliably determined as a good product. A region C indicates a region where the pressing force at the time of molding is within the limited pressing force range but is outside the specified weight range, and the molded product is determined to be defective.

ここで、限定加圧力範囲は、先行して成形された幾つかの成形品、または過去に生産された同規格の成形品の重量と加圧力を基に、限定加圧力範囲内の加圧力で成形された成形品が確実に良品となるように設定される。このとき、限定加圧力範囲の加圧力で成形された成形品は必ず領域Aに該当するように設定される。これは、成形品の重量と加圧力はほぼ比例の関係にあることに起因しており、この重量と加圧力の比例関係によって限定加圧力範囲の加圧力で成形された成形品を全て領域Aに該当させることが可能になる。よって、限定加圧力範囲で成形された成形品は必ず領域Aに該当するように限定加圧力範囲が設定できるため、領域Cに該当する成形品は存在しないこととなる。   Here, the limited pressure range is a pressure within the limited pressure range, based on the weight and pressure of several previously molded products or products of the same standard produced in the past. It is set to ensure that the molded product is a good product. At this time, the molded product molded with the pressurizing force in the limited pressurizing range is always set to correspond to the region A. This is due to the fact that the weight of the molded product and the applied pressure are in a substantially proportional relationship, and all of the molded products molded with the pressure in the limited applied pressure range due to the proportional relationship between the weight and the applied pressure. It becomes possible to make it correspond to. Therefore, since the limited pressure range can be set so that the molded product molded in the limited pressure range always corresponds to the region A, there is no molded product corresponding to the region C.

領域B、Dは、成形品が第2加圧力範囲の加圧力で成形され、かつ領域Aの確実に良品と判定される成形品を除いた成形品、つまり、良品、不良品の成形品が混在する領域を示している。この領域B、Dに該当する成形品が重量の測定対象であり、重量測定によって良品と判定される成形品は領域Bに該当し、不良品と判定される成形品は領域Dに該当することとなる。また、領域E、Fは、第2加圧力範囲よりも大きな加圧力の範囲で成形品が成形され、確実に規定重量範囲外となり不良品と判定される領域を示している。   In regions B and D, molded products are molded with the pressure in the second pressure range, and molded products excluding molded products that are definitely judged as good in region A, that is, good and defective molded products. The mixed area is shown. The molded products corresponding to the regions B and D are the objects of weight measurement, the molded product determined to be non-defective by weight measurement corresponds to the region B, and the molded product determined to be defective corresponds to the region D. It becomes. Regions E and F indicate regions in which the molded product is molded in a range of pressure greater than the second pressure range, and is reliably out of the specified weight range and determined as a defective product.

ここで、第2加圧力範囲は、限定加圧力範囲の設定と同様に、先行して成形された幾つかの成形品、または過去に生産された同規格の成形品の重量と加圧力を基に、この範囲外で成形された成形品が確実に不良品となるように設定される。このとき、第2加圧力範囲外の加圧力で成形された成形品は必ず領域Eに該当するように設定される。これも成形品の重量と加圧力がほぼ比例の関係にあることに起因しており、この重量と加圧力の比例関係によって第2加圧力範囲外の加圧力で成形された成形品を全て領域Eに該当させることが可能になる。よって、第2加圧力範囲外で成形された成形品は必ず領域Eに該当するように第2加圧力範囲が設定できるため、領域Fに該当する成形品は存在しないこととなる。  Here, the second pressurizing force range is based on the weight and pressurizing force of some previously molded products or products of the same standard produced in the past, as in the setting of the limited pressurizing force range. In addition, it is set so that a molded product molded outside this range is surely defective. At this time, a molded product molded with a pressure outside the second pressure range is always set to correspond to the region E. This is also due to the fact that the weight of the molded product and the pressing force are in a substantially proportional relationship, and all the molded products molded with a pressing force outside the second pressing force range by this proportional relationship between the weight and the pressing force. It becomes possible to make it correspond to E. Therefore, since the second pressure range can be set so that the molded product molded outside the second pressure range always corresponds to the region E, there is no molded product corresponding to the region F.

したがって、上記の粉末成形品の製造方法においては、成形時に検出されるプレスの加圧力を利用して、秤量判定においても確実に良品とされる限定加圧力範囲を予め設定し、この限定加圧力範囲の加圧力で成形された成形品はその時点で良品として選別することができ、限定加圧力範囲外の加圧力で成形された成形品に対してのみ重量を測定することにより、全ての成形品の良品、不良品選別を行うことができる。   Therefore, in the manufacturing method of the above-mentioned powder molded product, a limited pressurizing range that is surely regarded as a non-defective product in the weighing determination is set in advance using the pressurizing force detected at the time of molding. Molded products molded with a pressure within the range can be selected as good products at that time, and all molded products can be measured by measuring the weight only for molded products molded with a pressure outside the limited pressure range. It is possible to sort non-defective and defective products.

また、確実に良品とされる限定加圧力範囲に加えて、その範囲外の加圧力が検出された場合には確実に不良品とされる第2加圧力範囲を設定することにより、成形時の加圧力の検出によって確実に良品とされる成形品と、確実に不良品とされる成形品とを選別することができる。   Moreover, in addition to the limited pressure range that is surely regarded as a non-defective product, when a pressure outside the range is detected, a second pressure range that is reliably regarded as a defective product is set. By detecting the pressure, it is possible to select a molded product that is definitely a good product and a molded product that is definitely a defective product.

さらに、限定加圧力範囲外で、かつ第2加圧力範囲内の加圧力で成形された成形品に対してのみ重量を測定することにより、全ての成形品の良品、不良品選別を行うことができる。   Furthermore, by measuring the weight only for molded products that are molded outside the limited pressure range and with a pressure within the second pressure range, it is possible to select non-defective products and defective products for all molded products. it can.

さらに、規定重量範囲又は第2加圧力範囲の範囲外であることによって不良品が特定され、不良品が発生した場合には、充填高さがフィードバック制御されるので、一定重量の成形品を連続的に成形することができ、生産精度及び生産性の向上を図ることができる。   Furthermore, if a defective product is identified by being out of the specified weight range or the second pressure range, and if a defective product is generated, the filling height is feedback-controlled. Therefore, the production accuracy and productivity can be improved.

よって、上記の粉末成形品の製造方法によれば、成形品を全数重量測定した場合と同じ精度を維持しつつ生産性の向上を図ることができる。   Therefore, according to the above method for producing a powder molded product, productivity can be improved while maintaining the same accuracy as when the total number of molded products are measured.

また、上記の粉末成形品の製造装置においては、圧力検出手段によって成形時の加圧力を検出し、検出された加圧力が限定加圧力範囲内であるか否かを圧力判定手段によって判定し、限定加圧力範囲内と判定された成形品を良品として選別することができる。   Further, in the above powder molded product manufacturing apparatus, the pressure detection means detects the applied pressure at the time of molding, and the pressure determination means determines whether or not the detected applied pressure is within the limited applied pressure range, A molded product determined to be within the limited pressure range can be selected as a non-defective product.

さらに、限定加圧力範囲外と判定された成形品は、重量測定手段によって重量が測定され、重量が規定範囲内であるか否かを重量判定手段によって判定し、規定重量範囲外と判定された成形品を不良品として選別することができ、不良品とされた成形品を不良品排出手段によって排除することができる。   Further, the molded article determined to be out of the limited pressure range is measured by the weight measuring unit, and the weight determining unit determines whether the weight is within the specified range, and is determined to be out of the specified weight range. The molded product can be selected as a defective product, and the molded product determined as a defective product can be eliminated by the defective product discharging means.

この場合、圧力判定手段により限定加圧力範囲外であると判定された成形品に対してのみ重量を測定して全ての成形品の良品、不良品選別を行うことができる。   In this case, the weight can be measured only for the molded product determined to be out of the limited pressure range by the pressure determining means, and the non-defective product and the defective product can be selected.

さらに、重量判定手段又は第2圧力判定手段によって規定重量範囲又は第2加圧力範囲の範囲外となる不良品が特定され、不良品が発生した場合には、フィードバック制御手段によって充填高さがフィードバック制御されるので、一定重量の成形品を連続的に成形することができ、生産精度及び生産性の向上を図ることができる。  Furthermore, when a defective product outside the specified weight range or the second pressure range is specified by the weight determination unit or the second pressure determination unit, and a defective product is generated, the filling height is fed back by the feedback control unit. Since it is controlled, a molded product having a constant weight can be continuously formed, and production accuracy and productivity can be improved.

よって、上記の粉末成形品の製造装置によれば、成形品を全数重量測定した場合と同じ精度を維持しつつ生産性の向上を図ることができる。  Therefore, according to the above-described powder molded product manufacturing apparatus, productivity can be improved while maintaining the same accuracy as when all the weights of the molded products are measured.

本発明の一実施形態に係る粉末成形品の製造装置の概略図である。It is the schematic of the manufacturing apparatus of the powder molded product which concerns on one Embodiment of this invention. 図1に示す粉末成形部の概略図である。It is the schematic of the powder shaping | molding part shown in FIG. 本発明の一実施形態に係る成形品の良品、不良品の判定方法を示すフロー図である。It is a flowchart which shows the determination method of the quality goods of the molded product which concerns on one Embodiment of this invention, and a defective product. 本発明の粉末成形品の製造方法の一実施形態として示した限定加圧力範囲および第2加圧力範囲の設定例を示す図である。It is a figure which shows the example of a setting of the limited pressurization range shown as one Embodiment of the manufacturing method of the powder molded product of this invention, and a 2nd pressurization range.

符号の説明Explanation of symbols

1 粉末成形装置
2 支持テーブル
3 充填部
4 ダイ
5 上パンチ
6 下パンチ
7 フィーダーカップ
8 金型
10 重量測定手段
11 重量判定手段
12 不良品排出手段
13 圧力検出手段
14 圧力判定手段
15 第2圧力判定手段
16 フィードバック制御手段
17 充填高さ調整手段
H 充填高さ(リフト量)
P 粉末材料

DESCRIPTION OF SYMBOLS 1 Powder shaping | molding apparatus 2 Support table 3 Filling part 4 Die 5 Upper punch 6 Lower punch 7 Feeder cup 8 Mold 10 Weight measuring means 11 Weight judging means 12 Defective product discharging means 13 Pressure detecting means 14 Pressure judging means 15 Second pressure judging Means 16 Feedback control means 17 Filling height adjusting means H Filling height (lift amount)
P powder material

Claims (8)

機械式プレスに設置した金型を用いて粉末成形品を製造する方法であって、
成形時にプレスの加圧力を検出して、該加圧力が予め設定した限定加圧力範囲内であるか否かを判定し、該限定加圧力範囲外と判定された場合に当該成形品の重量を測定して、該重量が規定重量範囲内であるか否かを判定し、これら限定加圧力範囲内又は規定重量範囲内と判定された成形品を良品とし、規定重量範囲外と判定された成形品を不良品とすることを特徴とする粉末成形品の製造方法。
A method for producing a powder molded product using a mold installed in a mechanical press,
The pressing force of the press is detected at the time of molding, and it is determined whether or not the pressing force is within the preset limited pressing force range. Measure to determine whether the weight is within the specified weight range, and determine that the molded product determined to be within the limited pressure range or the specified weight range is a non-defective product. A method for producing a powder molded product, wherein the product is a defective product.
請求項1記載の粉末成形品の製造方法において、
前記限定加圧力範囲よりも大きい第2加圧力範囲を設定しておき、成形時の加圧力が第2加圧力範囲外であると判定された場合には不良品とすることを特徴とする粉末成形品の製造方法。
In the manufacturing method of the powder molded product of Claim 1,
A powder characterized in that a second pressure range larger than the limited pressure range is set, and a defective product is determined when it is determined that the pressure during molding is outside the second pressure range. Manufacturing method of molded products.
請求項1記載の粉末成形品の製造方法において、
前記規定重量範囲外と判定された場合に、前記金型内への粉末材料の充填高さをフィードバック制御することを特徴とする粉末成形品の製造方法。
In the manufacturing method of the powder molded product of Claim 1,
A method for producing a powder molded product, comprising feedback-controlling a filling height of the powder material into the mold when it is determined that the weight is out of the specified weight range.
請求項2記載の粉末成形品の製造方法において、
前記規定重量範囲外又は前記第2加圧力範囲外と判定された場合に、前記金型内への粉末材料の充填高さをフィードバック制御することを特徴とする粉末成形品の製造方法。
In the manufacturing method of the powder molded product of Claim 2,
A method for producing a powder molded product, wherein feedback control is performed on the filling height of the powder material into the mold when it is determined that the weight is outside the specified weight range or the second pressure range.
機械式プレスに設置した金型を用いて粉末成形品を製造する装置であって、
成形時にプレスの加圧力を検出する圧力検出手段と、該加圧力が予め設定した限定加圧力範囲内であるか否かを判定する圧力判定手段と、該限定加圧力範囲外と判定された場合に当該成形品の重量を測定する重量測定手段と、該重量が規定重量範囲内であるか否かを判定する重量判定手段と、該重量判定手段によって前記規定重量範囲外と判定された成形品を不良品として排出する不良品排出手段とを備えることを特徴とする粉末成形品の製造装置。
An apparatus for producing a powder molded product using a mold installed in a mechanical press,
When it is determined that the pressure detecting means for detecting the pressurizing force at the time of molding, the pressure determining means for determining whether or not the pressurizing force is within a preset limited pressurizing range, and out of the limited pressurizing range A weight measuring means for measuring the weight of the molded article, a weight determining means for determining whether or not the weight is within a specified weight range, and a molded article determined to be out of the specified weight range by the weight determining means. An apparatus for producing a powder molded product, comprising: a defective product discharging means for discharging the product as a defective product.
請求項5記載の粉末成形品の製造装置において、
成形時の加圧力が前記限定加圧力範囲より大きい第2加圧力範囲内であるか否かを判定する第2圧力判定手段を備え、前記不良品排出手段は、さらに、前記第2圧力判定手段により第2加圧力範囲外であると判定された成形品をも排出する構成であることを特徴とする粉末成形品の製造装置。
In the apparatus for manufacturing a powder molded product according to claim 5,
A second pressure determining means for determining whether or not a pressing force during molding is within a second pressing force range that is larger than the limited pressing force range; and the defective product discharging means further includes the second pressure determining means. The apparatus for producing a powder molded product, characterized in that the molded product determined to be outside the second pressure range is also discharged.
請求項5記載の粉末成形品の製造装置において、
前記重量判定手段によって前記規定重量範囲外と判定された成形品の重量又は成形時の加圧力を基に、前記金型内への粉末材料の充填高さをフィードバック制御するフィードバック制御手段を有していることを特徴とする粉末成形品の製造装置。
In the apparatus for manufacturing a powder molded product according to claim 5,
Feedback control means for feedback-controlling the filling height of the powder material into the mold based on the weight of the molded product determined to be out of the specified weight range by the weight determination means or the applied pressure at the time of molding; An apparatus for producing a powder molded product.
請求項6記載の粉末成形品の製造装置において、
前記重量判定手段及び前記第2圧力判定手段によって前記規定重量範囲外又は前記第2加圧力範囲外と判定された成形品の重量又は成形時の加圧力を基に、前記金型内への粉末材料の充填高さをフィードバック制御するフィードバック制御手段を有していることを特徴とする粉末成形品の製造装置。

In the apparatus for manufacturing a powder molded product according to claim 6,
Powder in the mold based on the weight of the molded product determined to be out of the specified weight range or out of the second pressurizing range by the weight determining unit and the second pressure determining unit or the pressing force at the time of molding An apparatus for producing a powder molded product, comprising feedback control means for feedback controlling the filling height of the material.

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012106265A (en) * 2010-11-18 2012-06-07 Sumitomo Electric Hardmetal Corp Method and device for manufacturing pressed body

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0371995A (en) * 1989-08-11 1991-03-27 Tokyo Tanabe Co Ltd Method and apparatus for adjusting weight of forming product in powder compressed forming machine
JPH0516216U (en) * 1991-08-12 1993-03-02 京セラ株式会社 Ceramic automatic press molding equipment

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0371995A (en) * 1989-08-11 1991-03-27 Tokyo Tanabe Co Ltd Method and apparatus for adjusting weight of forming product in powder compressed forming machine
JPH0516216U (en) * 1991-08-12 1993-03-02 京セラ株式会社 Ceramic automatic press molding equipment

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012106265A (en) * 2010-11-18 2012-06-07 Sumitomo Electric Hardmetal Corp Method and device for manufacturing pressed body

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