JP3434181B2 - Powder filling method and powder filling device - Google Patents
Powder filling method and powder filling deviceInfo
- Publication number
- JP3434181B2 JP3434181B2 JP27070797A JP27070797A JP3434181B2 JP 3434181 B2 JP3434181 B2 JP 3434181B2 JP 27070797 A JP27070797 A JP 27070797A JP 27070797 A JP27070797 A JP 27070797A JP 3434181 B2 JP3434181 B2 JP 3434181B2
- Authority
- JP
- Japan
- Prior art keywords
- powder
- fluidity
- gas
- box
- powder box
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
- B30B15/30—Feeding material to presses
- B30B15/302—Feeding material in particulate or plastic state to moulding presses
- B30B15/304—Feeding material in particulate or plastic state to moulding presses by using feed frames or shoes with relative movement with regard to the mould or moulds
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Powder Metallurgy (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、粉末充填方法およ
び粉末充填装置に関する。TECHNICAL FIELD The present invention relates to a powder filling method and a powder filling device.
【０００２】[0002]
【従来の技術】従来、粉箱内の粉末をキャビティ内に落
とし込む、落とし込み充填が知られているが、キャビテ
ィの形状が複雑であると、粉末が充填されにくい部分が
生じたり、粉末の粒度および成分偏析が生じたりする。
これを防止する方法として本願出願人等は、特願平８−
７５９４５号（平成８年３月２９日出願）に、粉箱内
に、複数の孔を有するパイプを配置してガスを流して粉
末に流動性を与えながらキャビティ内に粉末を供給する
方法を提案した。2. Description of the Related Art Conventionally, drop-filling has been known in which powder in a powder box is dropped into a cavity. However, if the shape of the cavity is complicated, a portion where the powder is difficult to fill may be generated, and the particle size of the powder may be small. Segregation of components may occur.
As a method for preventing this, the applicant of the present application has filed Japanese Patent Application No. 8-
No. 75945 (filed on March 29, 1996) proposes a method of supplying a powder into a cavity while arranging a pipe having a plurality of holes in a powder box and flowing a gas to give fluidity to the powder. did.
【０００３】[0003]
【発明が解決しようとする課題】しかし、キャビティへ
の粉末の供給を繰り返すうちに、粉箱内にガスを流出さ
せるパイプの孔に粉末が詰まるなどの理由により、粉箱
内へ供給されるガス量が減少し、粉末の流動性が低下し
てしまうというおそれがある。本発明の目的は、粉末の
流動性を所定値に維持できる粉末充填方法および粉末充
填装置を提供することにある。However, as the powder is repeatedly supplied to the cavity, the gas supplied to the powder box is filled because the powder is clogged in the hole of the pipe that causes the gas to flow into the powder box. There is a risk that the amount will decrease and the fluidity of the powder will decrease. An object of the present invention is to provide a powder filling method and a powder filling device capable of maintaining the fluidity of powder at a predetermined value.
【０００４】[0004]
【課題を解決するための手段】上記目的を達成する本発
明はつぎの通りである。
（１） 複数のガス放出用孔を有するパイプが少なくと
も１つ設けられた粉箱内に粉末を供給するとともに、前
記パイプのガス放出用孔からガスを前記粉箱内に流す工
程と、前記粉箱内の粉末の流動性を測定する工程と、測
定された流動性に応じてパイプに供給するガス量を制御
する工程と、前記粉箱をキャビティ上に前進させてキャ
ビティ内に粉末を充填させる工程と、を有する粉末充填
方法。
（２） 底が開放された粉箱と、該粉箱に接続され、前
記粉箱をスライドさせる駆動装置と、前記粉箱内に設け
られ、複数のガス放出用孔を有する少なくとも１つのパ
イプと、前記粉箱内の粉末の流動性を測定する測定装置
と、前記パイプに接続され、前記測定装置により測定さ
れた流動性に応じて前記パイプに供給するガス量を制御
するガス量制御装置と、を有する粉末充填装置。The present invention which achieves the above object is as follows. (1) supplying powder into a powder box provided with at least one pipe having a plurality of gas discharge holes, and flowing gas into the powder box through the gas discharge holes of the pipe; Measuring the fluidity of the powder in the box, controlling the amount of gas supplied to the pipe according to the measured fluidity, and advancing the powder box above the cavity to fill the cavity with the powder. A powder filling method comprising: (2) A powder box having an open bottom, a drive device connected to the powder box for sliding the powder box, and at least one pipe provided in the powder box and having a plurality of gas discharge holes A measuring device for measuring the fluidity of the powder in the powder box, and a gas amount control device connected to the pipe for controlling the amount of gas supplied to the pipe according to the fluidity measured by the measuring device; , A powder filling device having.
【０００５】上記（１）の粉末充填方法では、粉箱内の
粉末の流動性を測定し、測定された粉末の流動性が所定
の流動性と異なる場合には、所定の流動性となるように
パイプに供給するガス量を制御するので、粉箱内の粉末
の流動性を所定値に維持できる。上記（２）の粉末充填
装置では、粉箱内の粉末の流動性を測定する測定装置
と、測定装置により測定された粉末の流動性に応じてガ
ス量を制御するガス量制御装置を有するので、粉箱内の
粉末の流動性を所定値に維持することができる。In the powder filling method of the above (1), the fluidity of the powder in the powder box is measured, and when the measured fluidity of the powder is different from the prescribed fluidity, the prescribed fluidity is obtained. Since the amount of gas supplied to the pipe is controlled, the fluidity of the powder in the powder box can be maintained at a predetermined value. The powder filling device of the above (2) has a measuring device for measuring the fluidity of the powder in the powder box and a gas amount control device for controlling the gas amount according to the fluidity of the powder measured by the measuring device. The fluidity of the powder in the powder box can be maintained at a predetermined value.
【０００６】[0006]
【発明の実施の形態】図１〜図３は本発明の第１実施例
の装置と方法を示し、図４、図５は本発明の第２実施例
の装置と方法を示している。図中、本発明の全実施例に
共通する部分には、互いに同じ符号を付してある。1 to 3 show the apparatus and method of a first embodiment of the present invention, and FIGS. 4 and 5 show the apparatus and method of a second embodiment of the present invention. In the figure, parts common to all the embodiments of the present invention are designated by the same reference numerals.
【０００７】本発明の全実施例に共通する粉末充填装置
は、図１に示すように、底が開放された粉箱２と、粉箱
２内に設けられた複数のガス放出用孔３ａを有する少な
くとも１つのパイプ３と、粉箱内の粉末の流動性を測定
する測定装置４と、パイプ３に接続され、測定装置４に
より測定された粉末の流動性に応じてガス量を制御する
制御装置５と、を有する。粉箱２へ供給される粉末６
は、多少でも流動化するものであれば良く、その材質、
サイズは任意であり、たとえば焼結用粉末、セラミック
粉末、混合粉末などである。粉箱２は図示されない駆動
装置に接続され、駆動装置の駆動によりテーブル１上を
前進、後退し、キャビティの直上をスライドされる。テ
ーブル１はキャビティへ粉末６を落とすための開口を有
している。ガスは、その種類は任意であり、たとえばド
ライ空気、窒素ガス、不活性ガス（Ｈｅ、Ａｒなど）な
どの粉末を酸化させないガスが用いられる。パイプ３内
に供給されたガスは、パイプに複数設けられたガス放出
用孔３ａから粉箱２内の粉末中に流出し、粉箱２内の粉
末に流動性を与える。測定装置４により測定される粉末
６の流動性は、粉箱２内に流出されるガス量に影響す
る。粉箱２内に流出するガス量（Ｖｇ）は、粉箱内の粉
末体積（Ｖｐ）に対する値（Ｖｇ／Ｖｐ（ｓｅｃ-1））
で示される。たとえば、Ｖｇ／Ｖｐ＝０．０５のとき粉
末の流動性の改善効果を生じる最小ガス流量であり、Ｖ
ｇ／Ｖｐ＝０．２のとき粉箱内の粉が発泡を生じない最
大ガス流量である場合は、０．０５≦Ｖｇ／Ｖｐ≦０．
２となるガス流量において所望の流動性が得られる。所
望（所定値）の流動性とは、粉末のキャビティへの充填
がスムーズに行われ、かつキャビティに充填された粉末
が粒度および成分偏析が生じにくい状態となる粉箱内の
粉末の流動性を示す。Ｖｇ／Ｖｐ値が高い場合は粉末の
流動性は高く、Ｖｇ／Ｖｐ値が低い場合は粉末の流動性
は低い。なお、所望の流動性が得られるＶｇ／Ｖｐ値の
適正範囲は、粉箱内の粉末によって異なる。As shown in FIG. 1, a powder filling apparatus common to all the embodiments of the present invention comprises a powder box 2 having an open bottom and a plurality of gas discharge holes 3a provided in the powder box 2. At least one pipe 3 having, a measuring device 4 for measuring the fluidity of the powder in the powder box, and a control connected to the pipe 3 for controlling the gas amount according to the fluidity of the powder measured by the measuring device 4. And a device 5. Powder 6 supplied to the powder box 2
Is good if it can be fluidized to some extent, its material,
The size is arbitrary, and examples thereof include sintering powder, ceramic powder, and mixed powder. The powder box 2 is connected to a drive device (not shown), and is driven forward and backward on the table 1 by the drive of the drive device, and is slid just above the cavity. The table 1 has an opening for dropping the powder 6 into the cavity. The gas may be of any type, and for example, a gas that does not oxidize the powder such as dry air, nitrogen gas, inert gas (He, Ar, etc.) is used. The gas supplied into the pipe 3 flows into the powder in the powder box 2 through a plurality of gas discharge holes 3 a provided in the pipe, and imparts fluidity to the powder in the powder box 2. The fluidity of the powder 6 measured by the measuring device 4 affects the amount of gas flowing into the powder box 2. The amount of gas (Vg) flowing into the powder box 2 is a value (Vg / Vp (sec −1 )) with respect to the powder volume (Vp) in the powder box.
Indicated by. For example, when Vg / Vp = 0.05, it is the minimum gas flow rate that produces the effect of improving the fluidity of the powder.
When g / Vp = 0.2 and the powder in the powder box has the maximum gas flow rate at which foaming does not occur, 0.05 ≦ Vg / Vp ≦ 0.
A desired fluidity is obtained at a gas flow rate of 2. The desired (predetermined value) fluidity is the fluidity of the powder in the powder box in which the powder is smoothly filled in the cavity and the powder filled in the cavity is in a state in which particle size and component segregation are less likely to occur. Show. When the Vg / Vp value is high, the fluidity of the powder is high, and when the Vg / Vp value is low, the fluidity of the powder is low. The proper range of the Vg / Vp value at which the desired fluidity is obtained differs depending on the powder in the powder box.
【０００８】つぎに、本発明実施例の粉末充填装置など
を用いることにより実行される本発明実施例の粉末充填
方法を説明する。まず、粉箱２内に粉末６を供給する。
粉箱２内には複数のガス放出用孔３ａを有する少なくと
も１つのパイプ３が設けられており、各ガス放出用孔３
ａからガスが流出している。ガスにより粉箱２内の粉末
は、上面が発泡しない範囲で流動した状態となる。つぎ
に、ガスを流出させたままの状態で粉箱２内の粉末６の
流動性を測定する。ガス量は粉末充填装置を作動する前
にあらかじめ調整され、粉末の流動性が所定値になるよ
うに設定されてはいるが、粉末充填装置の作動中に、必
ずしも設定値どおりのガス量が粉箱内に供給されている
とは限らないことから、流動性を測定する。流動性の測
定装置４および測定方法は第１実施例から第３実施例に
示す。測定された流動性が所定値（所定範囲）でない場
合は、ガス量制御装置５によりパイプ２へ供給するガス
量が制御され、流動性が所定値にされる。粉末６の流動
性が所定値とされたあと、粉箱２は駆動装置によりテー
ブル１上をスライドされる。そして、テーブル１の開口
に到達したときに、開放された底から粉末がキャビティ
内に落ち、これによりキャビティ内には粉末が充填され
る。粉箱２内の粉末６はガスにより流動性が高められて
いるため、ガスが供給されていない場合に比べ、粉末６
とキャビティ内の空気の置換がよりスムーズに行われ
る。粉末６がキャビティ内に落ちるときには粉末の舞い
上がりは抑制され、成分、粒度偏析のない充填が短時間
で行われる。Next, the powder filling method of the embodiment of the present invention executed by using the powder filling device of the embodiment of the present invention will be described. First, the powder 6 is supplied into the powder box 2.
At least one pipe 3 having a plurality of gas discharge holes 3a is provided in the powder box 2, and each gas discharge hole 3a is provided.
Gas is flowing out from a. The powder causes the powder in the powder box 2 to flow in a range where the upper surface does not foam. Next, the fluidity of the powder 6 in the powder box 2 is measured while the gas is flowing out. Although the amount of gas is adjusted in advance before operating the powder filling device and the fluidity of the powder is set to a predetermined value, the amount of gas is not always the set amount during operation of the powder filling device. The liquidity is measured because it is not always supplied in the box. The fluidity measuring device 4 and the measuring method are shown in the first to third embodiments. When the measured fluidity is not a predetermined value (predetermined range), the gas amount control device 5 controls the amount of gas supplied to the pipe 2 to bring the fluidity to a predetermined value. After the powder 6 has a predetermined fluidity, the powder box 2 is slid on the table 1 by a driving device. Then, when the powder reaches the opening of the table 1, the powder falls from the opened bottom into the cavity, whereby the powder is filled in the cavity. The fluidity of the powder 6 in the powder box 2 is enhanced by the gas, so that the powder 6 is more fluid than the case where the gas is not supplied.
And the air in the cavity is replaced more smoothly. When the powder 6 falls into the cavity, soaring of the powder is suppressed, and filling without components and particle size segregation is performed in a short time.
【０００９】流動性は粉箱１内に流出されるガス量に影
響されることから、粉末充填装置を始動するときに、ガ
ス量、すなわちＶｇ／Ｖｐ値は、粉末の流動性が好まし
い状態となる所定値に決められる。しかし、キャビティ
への粉末の充填を繰り返し行う間、長期にわたり同じパ
イプを使用して、パイプ３に設けられた複数の孔３ａに
粉末が詰まるなどの理由により、実際には所定範囲のガ
ス量が得られていないおそれがある。その場合には、た
とえば粉箱１内の粉末６の流動性が小さくなる。そこ
で、本発明実施例の装置と方法によれば、流動性を測定
する測定装置により、粉箱内の粉末の流動性が測定さ
れ、ガス量制御装置に伝えられ、測定された流動性に応
じて所定の流動性より低くなっていればガス量制御装置
によりガス量が多くされ、また、所定の流動性より高く
なっていればガス量制御装置によりガス量が少なくされ
所定の流動性となるようにガス量が制御される。その結
果、粉箱内の粉末の流動性は所定値に維持される。Since the fluidity is affected by the amount of gas flowing into the powder box 1, when the powder filling apparatus is started, the amount of gas, that is, the Vg / Vp value, indicates that the fluidity of the powder is preferable. Is determined to be a predetermined value. However, while the powder is repeatedly filled in the cavity, the same pipe is used for a long period of time, and the powder is clogged in the plurality of holes 3a provided in the pipe 3. It may not have been obtained. In that case, for example, the fluidity of the powder 6 in the powder box 1 becomes small. Therefore, according to the apparatus and method of the embodiment of the present invention, the fluidity of the powder in the powder box is measured by the measuring apparatus that measures the fluidity, and the fluidity is transmitted to the gas amount control device, and the measured fluidity is determined according to If it is lower than the predetermined fluidity, the gas amount is increased by the gas amount control device, and if it is higher than the predetermined fluidity, the gas amount is decreased by the gas amount control device and the fluidity becomes the predetermined fluidity. The amount of gas is controlled as follows. As a result, the fluidity of the powder in the powder box is maintained at a predetermined value.
【００１０】つぎに、本発明の各実施例に特有な部分と
なる流動性の測定装置および測定方法の説明する。実施
例１では粉末充填装置の測定装置４は、図１に示すよう
に、粉箱２の側壁の上面に上方に向かって設けられた支
柱４ａと、支柱４ａに支柱４ａとは直交する方向に設け
られた変位計４ｂ、クランパー４ｃとガイド４ｄを上か
ら順に有する。クランパー４ｃは支柱４ａに沿って上下
動する。また、先端部は開閉し、閉時はクランパー４ｃ
に対して直交する方向に延びる貫入棒４ｅを把持し、開
時は貫入棒４ｅの把持を解き貫入棒４ｅを粉箱内に落下
させる。貫入棒４ｅは、図２に示すように、径２ｍｍ
で、先端が尖っている。ガイド４ｄは貫入棒４ｅが挿通
されるガイド孔を有し、貫入棒４ｅが真っ直ぐ粉箱内に
落下するようにガイドする。上記装置により流動性を測
定する方法は、まず、下端面が粉末の表面から約６０ｍ
ｍの高さにクランパー４ｃによって把持されている貫入
棒４ｅを、クランパー４ｃを開とすることで粉箱２内の
粉末６中に落とす。ついで、クランパー４ｃを下降し、
貫入棒４ｅを把持してもとの高さまで上昇させる。クラ
ンパー４ｃの移動量により貫入棒４ｅの粉箱内への貫入
深さが変位計４ｂにより測定される。クランパー４ｃの
貫入深さは粉末の流動性を示し、粉末中への貫入深さが
深いほど粉末の流動性が高いことを示す。図３にはＶｇ
／Ｖｐ値と貫入棒４ｅの粉箱２内への貫入深さとの関係
を示す。粉末の流動状態が良好となる場合のＶｇ／Ｖｐ
値をあらかじめ把握しておくことで、図３からは粉末の
流動性が良好とされるときのＶｇ／Ｖｐ値に対する貫入
棒４ｅの貫入深さがわかる。たとえば、Ｖｇ／Ｖｐが
０．１≦Ｖｇ／Ｖｐ≦０．２となるときのガス量が粉末
の流動状態が良好となる範囲（所定範囲）とした場合、
貫入棒４ｅの貫入深さは２０〜２４ｍｍが所望の貫入深
さとされる。そのため、ガス量制御装置５は、変位計４
ｂから伝えられた貫入棒４ｅの貫入深さが２０〜２４ｍ
ｍであればガス量は変化させずに現状の量を維持し、貫
入棒４ｅの貫入深さが２０ｍｍ未満であればガス量を増
やし、貫入棒４ｅの貫入深さが２０〜２４ｍｍになるよ
うにガス量を制御する。また、貫入棒４ｅの貫入深さが
２４ｍｍより大きい場合はガス量を減らし、貫入棒４ｅ
の貫入深さが２０〜２４ｍｍになるようにガス量を制御
する。Next, a fluidity measuring device and a measuring method, which are characteristic parts of the respective embodiments of the present invention, will be described. In the first embodiment, as shown in FIG. 1, the measuring device 4 of the powder filling device includes a support column 4a provided upward on the upper surface of the side wall of the powder box 2 and a support column 4a in a direction orthogonal to the support column 4a. A displacement gauge 4b, a clamper 4c, and a guide 4d are provided in this order from the top. The clamper 4c moves up and down along the column 4a. Also, the tip part opens and closes, and when closed, the clamper 4c
The penetrating rod 4e extending in a direction orthogonal to is grasped, and when the penetrating rod 4e is opened, the penetrating rod 4e is released and dropped into the powder box. The penetration rod 4e has a diameter of 2 mm, as shown in FIG.
And the tip is sharp. The guide 4d has a guide hole through which the penetrating rod 4e is inserted, and guides the penetrating rod 4e so as to drop straight into the powder box. In the method of measuring fluidity by the above device, first, the lower end surface is about 60 m from the surface of powder.
The penetration rod 4e held by the clamper 4c at a height of m is dropped into the powder 6 in the powder box 2 by opening the clamper 4c. Then, lower the clamper 4c,
When the penetrating rod 4e is gripped, it is raised to the original height. The depth of penetration of the penetrating rod 4e into the powder box is measured by the displacement gauge 4b based on the amount of movement of the clamper 4c. The penetration depth of the clamper 4c indicates the fluidity of the powder, and the deeper the penetration depth into the powder, the higher the fluidity of the powder. Vg in FIG.
The relationship between the / Vp value and the penetration depth of the penetration rod 4e into the powder box 2 is shown. Vg / Vp when the powder flow condition is good
By knowing the values in advance, it is understood from FIG. 3 that the penetration depth of the penetration rod 4e with respect to the Vg / Vp value when the fluidity of the powder is good. For example, when the amount of gas when Vg / Vp is 0.1 ≦ Vg / Vp ≦ 0.2 is within a range (predetermined range) in which the powder flow state is good,
The penetration depth of the penetration rod 4e is set to 20 to 24 mm as a desired penetration depth. Therefore, the gas amount control device 5 includes the displacement meter 4
The penetration depth of the penetration rod 4e transmitted from b is 20 to 24 m.
If m, the amount of gas is not changed and the current amount is maintained. If the penetration depth of the penetration rod 4e is less than 20 mm, the amount of gas is increased so that the penetration depth of the penetration rod 4e is 20 to 24 mm. Control the amount of gas. Further, when the penetration depth of the penetration rod 4e is larger than 24 mm, the gas amount is reduced and the penetration rod 4e
The amount of gas is controlled so that the penetration depth is 20 to 24 mm.
【００１１】実施例２では粉末充填装置の測定装置４
は、図３に示すように、ロードセル４ｇに取り付けられ
たひずみゲージ付きの１．５ｍｍ径の検出針４ｈからな
る。上記装置により流動性を測定する方法は、まず、検
出針４ｈを粉箱内の粉末中に１０ｍｍ挿入する。そし
て、粉箱２を所定量動かすかあるいは検出針４ｈを所定
量動かし、そのとき得られる検出針４ｈの抵抗力を測定
する。抵抗力は、粉末の流動性を示し、抵抗力が小さい
ほど粉箱２中の粉末の流動性は大きいことを示す。図４
に、Ｖｇ／Ｖｐ値と検出針４ｈの抵抗力との関係を示
す。粉末の流動状態が良好となる場合のＶｇ／Ｖｐ値を
あらかじめ把握しておくことで、図５からは粉末の流動
状態が良好とされるときのＶｇ／Ｖｐ値に対する検出針
４ｈの抵抗力がわかる。たとえば、Ｖｇ／Ｖｐが０．１
≦Ｖｇ／Ｖｐ≦０．２となるときのガス量が粉末の流動
状態が良好となる範囲（所定範囲）とした場合、検出針
４ｈの示す抵抗力は、２０〜２８ｇが所望の抵抗力とさ
れる。そのため、ガス量制御装置５は、ロードセルから
伝えられた検出針４ｈの抵抗力が２０〜２８ｇであれば
ガス量は変化させずに現状の量を維持し、検出針４ｈの
抵抗力が２０ｇ未満であればガス量を減らし、検出針４
ｈの抵抗力が２０〜２８ｇになるようにガス量を制御す
る。また、検出針４ｈの抵抗力が２８ｇより大きい場合
はガス量を増やし、検出針４ｈの抵抗力が２０〜２８ｇ
になるようにガス量を制御する。In the second embodiment, the measuring device 4 of the powder filling device is used.
As shown in FIG. 3, it comprises a 1.5 mm diameter detection needle 4h with a strain gauge attached to a load cell 4g. In the method of measuring fluidity by the above device, first, the detection needle 4h is inserted into the powder in the powder box by 10 mm. Then, the powder box 2 is moved by a predetermined amount or the detection needle 4h is moved by a predetermined amount, and the resistance force of the detection needle 4h obtained at that time is measured. The resistance indicates the fluidity of the powder, and the smaller the resistance, the greater the fluidity of the powder in the powder box 2. Figure 4
Shows the relationship between the Vg / Vp value and the resistance of the detection needle 4h. By knowing in advance the Vg / Vp value when the powder is in a good flow state, the resistance of the detection needle 4h to the Vg / Vp value when the powder is in a good flow state is shown in FIG. Recognize. For example, Vg / Vp is 0.1
When the amount of gas when ≦ Vg / Vp ≦ 0.2 is in the range (predetermined range) in which the flow state of the powder is good, the resistance force indicated by the detection needle 4h is 20 to 28 g and the desired resistance force. To be done. Therefore, if the resistance force of the detection needle 4h transmitted from the load cell is 20 to 28 g, the gas amount control device 5 maintains the current amount without changing the gas amount, and the resistance force of the detection needle 4h is less than 20 g. If so, reduce the amount of gas and detect needle 4
The amount of gas is controlled so that the resistance of h is 20 to 28 g. When the resistance of the detection needle 4h is larger than 28 g, the amount of gas is increased so that the resistance of the detection needle 4h is 20 to 28 g.
The amount of gas is controlled so that
【００１２】実施例３では粉末充填装置の測定装置３
は、図示されない、羽根付きの回転棒と、回転棒の回転
トルクを測定する回転トルク測定装置とからなる。上記
装置により流動性を測定する方法は、羽根付きの回転棒
を粉箱内に挿入して回転させ、回転トルク測定装置によ
り回転棒の回転トルクを測定する。回転トルクは、粉末
の流動性を示し、回転トルクが小さいほど粉箱中の粉末
の流動性は大きいことを示す。In the third embodiment, the measuring device 3 of the powder filling device is used.
Is composed of a rotary rod with blades and a rotary torque measuring device for measuring the rotary torque of the rotary rod, which are not shown. In the method of measuring fluidity by the above device, a rotating rod with blades is inserted into a powder box and rotated, and the rotating torque of the rotating rod is measured by a rotating torque measuring device. The rotation torque indicates the fluidity of the powder, and the smaller the rotation torque, the greater the fluidity of the powder in the powder box.
【００１３】上記の本発明実施例では、測定装置４によ
り一部の箇所における粉箱２内の粉末の流動性を測定し
ているが、複数箇所の粉末の流動性を測定してもよい。
その場合は、複数の測定装置４をあらかじめ用意する
か、１つの測定装置を移動させて測定してもよい。複数
箇所の粉末の流動性を測定した結果、部分的に流動性が
異なれば、粉箱内に設けられた少なくとも１つのパイプ
が部分的に詰まりが生じていることが予想され、パイプ
の交換、掃除時期、掃除場所を把握できる。In the above-described embodiment of the present invention, the fluidity of the powder in the powder box 2 at some locations is measured by the measuring device 4, but the fluidity of the powder at a plurality of locations may be measured.
In that case, a plurality of measuring devices 4 may be prepared in advance, or one measuring device may be moved for measurement. As a result of measuring the fluidity of the powder at a plurality of points, if the fluidity is partially different, it is expected that at least one pipe provided in the powder box is partially clogged, and the pipe replacement, Know when and where to clean.
【００１４】[0014]
【発明の効果】請求項１の粉末充填方法によれば、粉末
の流動性を測定し、測定した流動性に応じて粉箱内に配
置されたパイプへ供給するガス量を制御できるため、粉
箱内の粉末の流動性を所定値に維持することができる。
請求項２の粉末充填装置によれば、粉末の流動性を測定
する測定装置と、測定した流動性に応じて粉箱内に配置
されたパイプへ供給するガス量を制御するガス量制御装
置を有するので、粉箱内の流動性を所定値に維持するこ
とができる。According to the powder filling method of the first aspect, the fluidity of the powder can be measured, and the amount of gas supplied to the pipe arranged in the powder box can be controlled according to the measured fluidity. The fluidity of the powder in the box can be maintained at a predetermined value.
According to the powder filling device of claim 2, a measuring device for measuring the fluidity of the powder, and a gas amount control device for controlling the amount of gas supplied to the pipe arranged in the powder box according to the measured fluidity. Since it has, the fluidity in the powder box can be maintained at a predetermined value.
【図１】本発明の第１実施例の粉末充填装置の断面図で
ある。FIG. 1 is a sectional view of a powder filling apparatus according to a first embodiment of the present invention.
【図２】本発明の第１実施例の貫入棒の側面図である。FIG. 2 is a side view of the penetrating rod according to the first embodiment of the present invention.
【図３】本発明の第１実施例に係わるＶｇ／Ｖｐ値と貫
入棒の貫入深さの関係を示す図である。FIG. 3 is a diagram showing a relationship between a Vg / Vp value and a penetration depth of a penetration rod according to the first embodiment of the present invention.
【図４】本発明の第２実施例の粉末充填装置の断面図で
ある。FIG. 4 is a sectional view of a powder filling apparatus according to a second embodiment of the present invention.
【図５】本発明の第２実施例に係わるＶｇ／Ｖｐ値と検
出針の抵抗力を示す図である。FIG. 5 is a diagram showing a Vg / Vp value and a resistance of a detection needle according to a second embodiment of the present invention.
２ 粉箱 ３ パイプ ３ａ ガス放出用孔 ４ 測定装置 ５ ガス流量制御装置 ６ 粉末 2 powder boxes 3 pipes 3a Gas release hole 4 Measuring device 5 Gas flow controller 6 powder
───────────────────────────────────────────────────── フロントページの続き (72)発明者 岡島 博司 愛知県豊田市トヨタ町１番地 トヨタ自 動車株式会社内 (72)発明者 近藤 幹夫 愛知県愛知郡長久手町大字長湫字横道41 番地の１ 株式会社豊田中央研究所内 (56)参考文献 特開 平９−168898（ＪＰ，Ａ) 実開 平３−47691（ＪＰ，Ｕ) 実開 平２−150204（ＪＰ，Ｕ) (58)調査した分野(Int.Cl.7，ＤＢ名) B30B 11/00 B22F 3/035 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Hiroshi Okajima 1 Toyota Town, Toyota City, Aichi Prefecture Toyota Motor Co., Ltd. (72) Inventor Mikio Kondo, Nagakute Town, Aichi District, Aichi Prefecture 1 share at 41 Yokomichi, Nagakute Company Toyota Central Research Institute (56) Reference JP-A-9-168898 (JP, A) Actual development 3-47691 (JP, U) Actual development 2-150204 (JP, U) (58) Fields investigated ( Int.Cl. 7 , DB name) B30B 11/00 B22F 3/035
Claims (2)
なくとも１つ設けられた粉箱内に粉末を供給するととも
に、前記パイプのガス放出用孔からガスを前記粉箱内に
流す工程と、 前記粉箱内の粉末の流動性を測定する工程と、 測定された流動性に応じてパイプに供給するガス量を制
御する工程と、 前記粉箱をキャビティ上に前進させてキャビティ内に粉
末を充填させる工程と、を有する粉末充填方法。1. A step of supplying powder into a powder box provided with at least one pipe having a plurality of gas discharge holes, and causing gas to flow from the gas discharge holes of the pipe into the powder box, Measuring the fluidity of the powder in the powder box, controlling the amount of gas supplied to the pipe according to the measured fluidity, and advancing the powder box above the cavity to load the powder into the cavity. And a step of filling the powder.
と、 前記粉箱内に設けられ、複数のガス放出用孔を有する少
なくとも１つのパイプと、 前記粉箱内の粉末の流動性を測定する測定装置と、 前記パイプに接続され、前記測定装置により測定された
流動性に応じて前記パイプに供給するガス量を制御する
ガス量制御装置と、を有する粉末充填装置。2. A powder box having an open bottom, a drive device connected to the powder box for sliding the powder box, and at least one provided in the powder box and having a plurality of gas discharge holes. A pipe, a measuring device for measuring the fluidity of the powder in the powder box, a gas amount control connected to the pipe and controlling the amount of gas supplied to the pipe according to the fluidity measured by the measuring device. And a powder filling device having a device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27070797A JP3434181B2 (en) | 1997-10-03 | 1997-10-03 | Powder filling method and powder filling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27070797A JP3434181B2 (en) | 1997-10-03 | 1997-10-03 | Powder filling method and powder filling device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH11104893A JPH11104893A (en) | 1999-04-20 |
| JP3434181B2 true JP3434181B2 (en) | 2003-08-04 |
Family
ID=17489849
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP27070797A Expired - Lifetime JP3434181B2 (en) | 1997-10-03 | 1997-10-03 | Powder filling method and powder filling device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3434181B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2445514C (en) | 2001-04-27 | 2008-10-21 | Toyota Jidosha Kabushiki Kaisha | Process for filling multi-powder and apparatus for filling multi-powder and process for forming multi-powder and apparatus for forming multi-powder |
-
1997
- 1997-10-03 JP JP27070797A patent/JP3434181B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH11104893A (en) | 1999-04-20 |
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