JPH01156403A - Method for packing granular powder - Google Patents
Method for packing granular powderInfo
- Publication number
- JPH01156403A JPH01156403A JP31647487A JP31647487A JPH01156403A JP H01156403 A JPH01156403 A JP H01156403A JP 31647487 A JP31647487 A JP 31647487A JP 31647487 A JP31647487 A JP 31647487A JP H01156403 A JPH01156403 A JP H01156403A
- Authority
- JP
- Japan
- Prior art keywords
- rubber mold
- cylindrical
- cylindrical rubber
- filling
- powder
- 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.)
- Pending
Links
- 239000000843 powder Substances 0.000 title claims abstract description 27
- 238000000034 method Methods 0.000 title claims abstract description 19
- 238000012856 packing Methods 0.000 title abstract description 9
- 239000002184 metal Substances 0.000 claims abstract description 19
- 239000000463 material Substances 0.000 claims abstract description 6
- 239000008187 granular material Substances 0.000 claims description 12
- 238000009694 cold isostatic pressing Methods 0.000 claims description 2
- 238000010079 rubber tapping Methods 0.000 claims 1
- 230000002706 hydrostatic effect Effects 0.000 abstract description 2
- 230000002093 peripheral effect Effects 0.000 abstract 1
- 238000000748 compression moulding Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000004663 powder metallurgy Methods 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 230000002618 waking effect Effects 0.000 description 1
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
- B30B15/02—Dies; Inserts therefor; Mounting thereof; Moulds
- B30B15/022—Moulds for compacting material in powder, granular of pasta form
- B30B15/024—Moulds for compacting material in powder, granular of pasta form using elastic mould parts
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Powder Metallurgy (AREA)
- Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野：
本発明は、静水圧プレスに用いられる円筒状ラバーまた
はこれと同目的に使用される円筒状物品（以下、円筒ラ
バーという。）に粉粒体を均一に充填する方法に関する
。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application: The present invention is directed to a cylindrical rubber used in a hydrostatic press or a cylindrical article used for the same purpose (hereinafter referred to as cylindrical rubber). The present invention relates to a method for uniformly filling.
従来の技術とその問題点：
いわゆる充填層が、充填物を充填する方法すなわち、ｒ
ａｎｄｏｍ １ｏｏｓｅ ａｒｒａｎｇｅｍｅｎｔかｒ
ａｎｄｏｍｄｅｎｓｅ ａｒｒａｎｇｅｍｅｎｔかによ
シ、充填密度に大きな差を生じ、−旦、充填してしまう
と、充填密度を変え難いことが、有名な、Ｈｏｕｇｅｎ
およびＷａ ｔ ｓ ｏｎ著Ｃｈｅｍｉｃａｌ Ｐｒ
ｏｃｅｓｓ Ｐｒ１ｎｃｉｐｌｅｓ Ｖｏｌ ｎｌｐ、
１０１６〜１０１７に記載されている。Conventional technology and its problems: The so-called packed bed is a method of filling the filler, i.e.
andom 1oose arrangement
The famous Hougen
and Chemical Pr by Watson.
ocess Pr1nciples Vol nlp,
1016-1017.
粉末冶金法、円筒状製品を作るために、成形体（圧粉体
）を作る際、ラバー（ゴム）型内に粉粒体を装入して、
圧縮成形する方法が一般的に用いられ、得られる成形体
は、さらに焼結操作によシ製品にする。Powder metallurgy method: When making a compact (powder compact) to make a cylindrical product, the powder is charged into a rubber mold.
A compression molding method is commonly used, and the resulting molded body is further subjected to a sintering operation to form a finished product.
製品の形状が円筒状の場合、成形体、しだがって、その
ラバー型も円筒状となる。通常この円筒の軸線が鉛直に
なるように、ラバー型を立置して、上部から粉粒体を供
給する。When the shape of the product is cylindrical, the molded body and therefore the rubber mold thereof will also be cylindrical. Usually, a rubber mold is placed vertically so that the axis of the cylinder is vertical, and powder is supplied from above.
従来、ラバー型内に粉粒体を供給する方法として、摺切
り充填法と、振動充填法（ゆすり込み）充填法とが使用
された。摺切り充填法の場合、「ｒａｎｄｏｍ １ｏｏ
ｓｅ ａｒｒａｎｇｅｍｅｎｔＪ となシ易く、充填
密度が小さく、かつ、均一な充填密度になり難い欠点が
ある。一方、振動充填を行う場合、充填層下部は、充填
層上部に比べて、ラバー型に大きな力を及ぼすこととな
シ、ラバー型の下部が膨出して、誇張して言えば、截頭
円錐状になる欠点があった。Conventionally, as a method for supplying powder into a rubber mold, a sliding filling method and a vibration filling method (shaking) filling method have been used. In the case of the sliding filling method, "random 1oo
It has the drawbacks that it is easy to create a se arrangement, that the packing density is low, and that it is difficult to achieve a uniform packing density. On the other hand, when performing vibration filling, the lower part of the packed bed exerts a larger force on the rubber mold than the upper part of the packed bed, and the lower part of the rubber mold bulges out, creating a truncated conical shape. There were some drawbacks.
そこで、本発明の目的は、ラバー筒下部におけるこの膨
出現象を防ぎ、かつ充填粉粒体の充填密度を大とする、
円筒ラバー型への粉粒体の充填方法を提供することであ
る。Therefore, an object of the present invention is to prevent this swelling phenomenon at the bottom of the rubber cylinder and increase the packing density of the packed powder.
An object of the present invention is to provide a method for filling powder into a cylindrical rubber mold.
問題点を解決する手段：
本発明では、円筒ラバー型へ粉粒体を充填するために、
ラバー型の半径方向外方から、振動板により、振動を与
えて、粉粒体を型内にゆすり込む。この際、振動板の、
ラバー型との当接面は、成形体の規定寸法と一致させる
。Means for solving the problem: In the present invention, in order to fill a cylindrical rubber mold with powder,
Vibrations are applied from the outside of the rubber mold in the radial direction using a vibration plate to shake the powder into the mold. At this time, the diaphragm
The contact surface with the rubber mold is made to match the specified dimensions of the molded body.
すなわち、本発明は、
芯金を囲む環状空間部に、粉粒体材料を充填する、冷間
静水圧プレス用円筒ラバー型に粉粒体を充填するに際し
：
該円筒ラバー型の半径方向外方から、所望寸法の成形品
を与えるべき円筒ラバー型の筒外面と当接係合する当接
面を持つ複数の振動板を配設し；少なくとも、粉粒体材
料を該環状空間部に送入した後、各振動板の振動サイク
ルを円周方向に沿って順次ずらし、ラバーに治って高速
回転するようにタップ振動を与える；
ことを特徴とする充填方法である。That is, the present invention provides the following features: When filling a cylindrical rubber mold for cold isostatic pressing with powder and granular material into an annular space surrounding a core metal, the following steps are provided: a plurality of diaphragms having abutment surfaces that abut and engage with the outer surface of a cylinder of a cylindrical rubber type that is to provide a molded product of a desired size; at least, a granular material is fed into the annular space; After that, the vibration cycle of each diaphragm is sequentially shifted along the circumferential direction, and tap vibration is applied to the rubber so that it heals and rotates at high speed.
また、上記事項に加えて、芯金の筒状外面とラバー型の
筒状内面とに摺接し、かつ、芯上端を被冠するほか無蓋
無底の充填用治具を、前記環状空間部に嵌納して、該充
填用治具内に粉粒体材料を填置し、該充填用治具を、芯
金端から膜対する方向に引抜くことによシ、粒体材料を
充填するケースを含む。In addition to the above, a filling jig that is in sliding contact with the cylindrical outer surface of the core metal and the rubber-shaped cylindrical inner surface, that covers the upper end of the core, and that has no lid and bottom is placed in the annular space. A case in which the granular material is filled by fitting the granular material into the filling jig and pulling out the filling jig from the end of the metal core in a direction toward the membrane. including.
作用：
本発明では、粉粒体材料を円筒ラバー型に充填するに際
し、振動充填法を用いて、見かけ密度を大きくするとと
もに、所望寸法の成形品を与え得る円筒ラバー型の形状
（正規形状）を維持するため、円筒ラバー型の半径方向
外方から、正規形状物と当接係合する当接面を持つ複数
の振動板を配設する（複数の撮動板は筒中６軸に対し、
等角対称に配設され、円筒ラバーの中心軸に直角な面内
で、相互に離反した円弧体となる。）。振動板によって
変形が制限されるので、円筒ラバー型の正規形状が維持
できることは言うまでもない。Effect: In the present invention, when filling a cylindrical rubber mold with powder material, a vibration filling method is used to increase the apparent density and to create a shape (regular shape) of the cylindrical rubber mold that can provide a molded product with desired dimensions. In order to maintain
They are arranged equiangularly symmetrically and form circular arc bodies that are spaced apart from each other in a plane perpendicular to the central axis of the cylindrical rubber. ). Needless to say, since deformation is limited by the diaphragm, the regular shape of the cylindrical rubber type can be maintained.
３枚の振動板を等角対称すなわち１２０度の角度で配設
した場合、円筒ラバーの正規形状維持および経済面を考
慮して最適と思われる。振動モードとしては、円筒ラバ
ー型の半径方向の１次元振動が簡単であるが、円振動、
だ円振動などの２次元振動、前後・左右・上下を含む３
次元振動が、経済的に望ましい場合は、上記に拘わる必
要はない。It seems optimal to arrange the three diaphragms equiangularly symmetrically, that is, at an angle of 120 degrees, in consideration of maintaining the regular shape of the cylindrical rubber and economical aspects. As a vibration mode, one-dimensional vibration in the radial direction of a cylindrical rubber type is simple, but circular vibration,
Two-dimensional vibration such as elliptical vibration, including front and back, left and right, and up and down 3
If dimensional vibration is economically desirable, there is no need to be concerned with the above.
実施例：
第１図において、円筒形ラバー型（１）の内部に同心に
芯金（２）を設置して、環状空間部（９）を形成し、こ
の空間部に粉粒体材料を充填しつつ、または、充填した
後に、心金（２）の中心軸に対称に配設した３セツトの
振動機（３ａ）、（３ｂ）、（３Ｃ）の振動板（４ａ）
、（４ｂ）、（４Ｃ）によシ振動充填する。振動板（４
ａ）、（４ｂ）、（４Ｃ）は、振幅制限板（５ａ）、（
５ｂ）、（５Ｃ）により、振動可能に遊持され、このこ
とは、円筒ラバー型（１）の正規形状保持に貢献する。Example: In Fig. 1, a core bar (2) is installed concentrically inside a cylindrical rubber mold (1) to form an annular space (9), and this space is filled with powder material. While or after filling, the diaphragms (4a) of three sets of vibrators (3a), (3b), (3C) arranged symmetrically about the central axis of the mandrel (2)
, (4b), and (4C). Vibration plate (4
a), (4b), (4C) are amplitude limiting plates (5a), (
5b) and (5C), it is freely supported in a vibrating manner, which contributes to maintaining the regular shape of the cylindrical rubber mold (1).
第２図において、充填用治具（６）は、芯金（２）を被
冠する芯金被冠部（６ａ）、これと一体となった、芯金
（２）の筒外面（２ｂ）と摺接する芯金摺接面（６ｂ）
、円筒ラバー型（１）の筒内面（ＩＣ）と摺接するラバ
ー型摺接面（６Ｃ）とを持ち、芯金摺接面（６ｂ）とラ
バー型摺接面（６Ｃ）とが図示しない繋定具で、ラバー
型（１）の中心軸方向が実質的に開口するように、一体
化繋着した構造である。In FIG. 2, the filling jig (6) includes a core metal covering part (6a) that covers the core metal (2), and an outer cylinder surface (2b) of the core metal (2) that is integrated with this. Core metal sliding contact surface (6b) that comes into sliding contact with
, has a rubber-type sliding contact surface (6C) that comes into sliding contact with the cylinder inner surface (IC) of the cylindrical rubber mold (1), and the metal core sliding surface (6b) and the rubber-type sliding contact surface (6C) are connected to each other (not shown). It has a structure in which the rubber mold (1) is integrally connected with a fixture so that the central axis direction of the rubber mold (1) is substantially open.
（イ）図は、充填用治具（６）を、円筒ラバー型（１）
の筒内面と芯金（２）の筒外面に摺接させて載置し、そ
の上部開口部（６ｄ）から粉粒体材料を送入した状態を
示す。粉粒体の充填時には必らずしも、振動板（４）を
振動させなくても良いが、充填を終った後は、必らず振
動を加えて、見かけの密度を充分大にしなければならな
い。粒度の一定した粉粒体材料の一定重量を用いて、振
動板で充分ゆすシこんで、高い見掛は密度にすることが
、良い成形体を得るために重要である。(a) The figure shows the filling jig (6) and the cylindrical rubber mold (1).
The tube is placed in sliding contact with the tube inner surface of the core bar (2) and the tube outer surface of the core metal (2), and the granular material is introduced from the upper opening (6d). It is not necessary to vibrate the diaphragm (4) when filling the powder, but after filling, it is necessary to add vibration to make the apparent density sufficiently large. It won't happen. In order to obtain a good molded product, it is important to use a constant weight of granular material with a constant particle size and sufficiently shake it with a diaphragm to obtain a high apparent density.
なお、円筒ラバー型の下部膨出現象が、振動板（４）に
より防止されることに注意されたい。It should be noted that the cylindrical rubber type lower bulge phenomenon is prevented by the diaphragm (4).
（ロ）図は、充填用治具（６）を、芯金被冠部（６ａ）
が脱冠する方向（図の上方）に引抜きつつある状態を示
す。治具（６）を取去った状態を（ハ）図に示す。に）
図では、円筒ラバー型に上蓋（８）を装着して（下蓋（
７）は（イ）図において、すでに装着済である。）。流
体圧により圧縮している状態を示す。成形体は、常法に
より焼結して焼結体とする。(b) The figure shows the filling jig (6) and the core metal crowning part (6a).
The figure shows the state in which the crown is being pulled out in the direction of decapitation (upper part of the figure). Figure (C) shows the state with the jig (6) removed. )
In the figure, the upper cover (8) is attached to the cylindrical rubber mold (lower cover (
7) has already been installed in the figure (A). ). Indicates a state in which it is compressed by fluid pressure. The molded body is sintered by a conventional method to form a sintered body.
発明の効果：
叙上のとおり、本発明は、円筒ラバー型を用いて、冷間
流体圧プレスにより圧縮成形して成形体を作る方法の中
で、特に、該円筒ラバー型に、その変形を起こさずに、
材料粉粒体を高見掛は密度に充填する方法を提供したも
ので、したがって高密度かつ品質の一定した成形体・焼
結体が得られることは言うまでもない。Effects of the Invention: As described above, the present invention is a method for producing a molded article by compression molding using a cylindrical rubber mold using a cold fluid pressure press. without waking up
It goes without saying that this method provides a method for packing material powder to a high apparent density, and therefore a molded or sintered body with high density and constant quality can be obtained.
第１図は、円筒ラバー型に、粉粒体材料を充填した状態
を、その中芯軸に直角な面による断面で示した断面図で
ある。第２図は、充填用治具を用いて、粉粒体材料を充
填する場合の操作順序を、（イ）図、（ロ）図、（ハ）
図、に）図の順に示しだ図である。
（１）・・・円筒ラバー型 （２）・・・芯金（３）
（８ａＸ３ｂＸ８ｃ）・・−振動機（４）（４ａＸ４ｂ
）（４ｃ）−振動板（５ａＸ５ｂＸ５ｃ）−振動制限板
（６）・・・充填用治具 （７）・・・下蓋（８）
・・・上蓋 （９）・・・環状空間部出 願
人 株式会社小松製作所FIG. 1 is a cross-sectional view of a cylindrical rubber mold filled with powder material, taken along a plane perpendicular to its central axis. Figure 2 shows (a), (b), and (c) the operation sequence when filling powder or granular material using a filling jig.
Figures 1 and 2) are shown in the order of figures. (1)...Cylindrical rubber type (2)...Core metal (3)
(8aX3bX8c)... - Vibrator (4) (4aX4b
) (4c) - Vibration plate (5aX5bX5c) - Vibration limiting plate (6)...Filling jig (7)...Lower lid (8)
...Top lid (9)...Annular space Applicant: Komatsu Ltd.
Claims (1)
造の冷間静水圧プレス用円筒ラバー型に粉粒体を充填す
るに際し： 該円筒ラバー型の半径方向外方から、所望寸法の成形品
を与えるべき円筒ラバー型の筒外面と当接係合する当接
面を持つ複数の振動板を配設し； 少なくとも、粉粒体材料を該環状空間部に送入した後、
各振動板の振動サイクルを円周方向に沿つて順次ずらし
、ラバーに沿つて高速回転するようにタップする振動を
与える； ことを特徴とする円筒ラバー型への粉粒体充填方法。 ２ 芯金の筒状外面と円筒ラバー型の筒状内面に摺接し
、かつ、芯金の上端を被冠するほか、無蓋無底の充填用
治具を、前記環状空間部に嵌納して、該充填用治具内に
粉粒体材料を填置し、該充填用治具を、芯金端から脱冠
する方向に引抜くことにより、粉粒体材料を充填する特
許請求の範囲第１項に記載の粉粒体の充填方法。 ３ 振動板数が３で、芯金に対し等角対称である特許請
求の範囲第１項または第２項に記載の粉粒体の充填方法
。[Claims] 1. When filling a cylindrical rubber mold for cold isostatic pressing with powder and granule material into an annular space surrounding a core metal, the method is as follows: In the radial direction of the cylindrical rubber mold. A plurality of diaphragms are disposed from the outside and have abutment surfaces that abut and engage with the outer surface of a cylindrical rubber type cylinder to which a molded product of desired dimensions is to be provided; After sending the
A method for filling powder into a cylindrical rubber mold, characterized in that the vibration cycle of each diaphragm is sequentially shifted along the circumferential direction, and tapping vibration is applied so that the vibration plate rotates at high speed along the rubber. 2. In addition to slidingly contacting the cylindrical outer surface of the cored metal and the cylindrical inner surface of the cylindrical rubber mold and covering the upper end of the cored metal, a filling jig with no cover and bottom is fitted into the annular space. , the powder or granular material is filled by placing the powder or granular material in the filling jig and pulling out the filling jig in a direction in which the filling jig is removed from the end of the metal core. The method for filling powder or granular material according to item 1. 3. The method for filling powder or granular material according to claim 1 or 2, wherein the number of diaphragms is 3 and is equiangularly symmetrical with respect to the core bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31647487A JPH01156403A (en) | 1987-12-14 | 1987-12-14 | Method for packing granular powder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31647487A JPH01156403A (en) | 1987-12-14 | 1987-12-14 | Method for packing granular powder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01156403A true JPH01156403A (en) | 1989-06-20 |
Family
ID=18077498
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP31647487A Pending JPH01156403A (en) | 1987-12-14 | 1987-12-14 | Method for packing granular powder |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01156403A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04339597A (en) * | 1991-05-16 | 1992-11-26 | Ngk Insulators Ltd | Isotropic pressurization forming mold for powder and molding method using this mold |
| US6956505B2 (en) | 2002-02-28 | 2005-10-18 | Fanuc Ltd | Signal processing apparatus for encoder |
| CN103909266A (en) * | 2014-03-31 | 2014-07-09 | 成都易态科技有限公司 | Powder sintering porous filter element production method, equipment and product |
-
1987
- 1987-12-14 JP JP31647487A patent/JPH01156403A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04339597A (en) * | 1991-05-16 | 1992-11-26 | Ngk Insulators Ltd | Isotropic pressurization forming mold for powder and molding method using this mold |
| US6956505B2 (en) | 2002-02-28 | 2005-10-18 | Fanuc Ltd | Signal processing apparatus for encoder |
| CN103909266A (en) * | 2014-03-31 | 2014-07-09 | 成都易态科技有限公司 | Powder sintering porous filter element production method, equipment and product |
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