JP2898592B2 - Mold removal method in dry isostatic pressing - Google Patents
Mold removal method in dry isostatic pressingInfo
- Publication number
- JP2898592B2 JP2898592B2 JP31232795A JP31232795A JP2898592B2 JP 2898592 B2 JP2898592 B2 JP 2898592B2 JP 31232795 A JP31232795 A JP 31232795A JP 31232795 A JP31232795 A JP 31232795A JP 2898592 B2 JP2898592 B2 JP 2898592B2
- Authority
- JP
- Japan
- Prior art keywords
- molded body
- molding
- peripheral surface
- mandrel
- bottom punch
- 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
Description
【０００１】[0001]
【発明の属する技術分野】 本発明は、例えばセラミッ
ク粉末、金属粉末等を成形するための乾式静水圧加圧成
形における成形体取り出し方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for removing a compact in dry isostatic pressing for molding, for example, ceramic powder, metal powder, and the like.
【０００２】[0002]
【従来の技術】 一般に、乾式の静水圧加圧成形（以下
ＣＩＰ成形という。）は、粉末充填、加圧、減圧、成形
体取出しの各工程から成り、セラミック粉末、金属粉末
等を有底円筒状又は円筒状に成形する目的に好適に用い
られる。2. Description of the Related Art In general, dry hydrostatic pressure molding (hereinafter, referred to as CIP molding) includes steps of powder filling, pressing, decompression, and removal of a compact. It is suitably used for the purpose of molding into a shape or a cylinder.
【０００３】 ＣＩＰ成形による成形工程を、有底円筒
体の成形を例に、図４〜図６を用いて説明する。まず、
図４に示すように、セラミック粉末、金属粉末等の成形
用粉末Ａが、給粉ノズル１を介して圧力容器２内の成形
空間８に挿入・充填される。ここで、圧力容器２は、内
部に、円柱状のマンドレル３と円筒状の成形用ゴム型
４、及びマンドレル３を下方から支持するボトムパンチ
９とから形成される成形空間８を有し、成形用ゴム型４
の周方向の外周側には、成形用ゴム型４を包囲する圧媒
シールゴム５が備えられている。圧力容器２には圧媒出
入口６が設けられている。なお、７はシールゴムホルダ
ーである。A molding process by CIP molding will be described with reference to FIGS. 4 to 6, taking molding of a bottomed cylinder as an example. First,
As shown in FIG. 4, a molding powder A such as a ceramic powder or a metal powder is inserted and filled into a molding space 8 in the pressure vessel 2 via a powder supply nozzle 1. Here, the pressure vessel 2 has therein a molding space 8 formed by a cylindrical mandrel 3, a cylindrical molding rubber mold 4, and a bottom punch 9 supporting the mandrel 3 from below. Rubber mold 4
A pressure-medium sealing rubber 5 surrounding the rubber mold 4 for molding is provided on the outer peripheral side in the circumferential direction of. The pressure vessel 2 is provided with a pressure medium inlet / outlet 6. Reference numeral 7 denotes a seal rubber holder.
【０００４】 圧力容器２内の成形空間８に挿入・充填
された成形用粉末Ａは、圧力容器２の上部に、トップゴ
ム栓１０を備えたトップパンチ１１を挿入した後、図５
に示すように、高圧ポンプ（図示せず。）から増圧機
（図示せず。）を経て圧媒出入口６から流入する圧力媒
体により加圧することにより、圧媒シールゴム５及び成
形用ゴム型４を介して圧縮成形される。圧縮成形が終了
した後、図６に示すように、圧力媒体を圧媒出入口６よ
り流出させて、成形用ゴム型４を復元させる。The molding powder A inserted and filled into the molding space 8 in the pressure vessel 2 is inserted into a top punch 11 provided with a top rubber stopper 10 in the upper part of the pressure vessel 2, as shown in FIG.
As shown in FIG. 2, the pressure medium sealing rubber 5 and the molding rubber mold 4 are pressurized by a pressure medium flowing from a high pressure pump (not shown) through a pressure medium inlet / outlet 6 via a pressure intensifier (not shown). Via compression molding. After the completion of the compression molding, as shown in FIG. 6, the pressure medium is caused to flow out of the pressure medium inlet / outlet 6, and the molding rubber mold 4 is restored.
【０００５】 又、成形体のＣＩＰ成形装置からの取り
出しは、従来、図７（ａ）〜（ｃ）に示す方法により行
われていた。[0005] The removal of the molded body from the CIP molding apparatus has conventionally been performed by the method shown in FIGS. 7 (a) to 7 (c).
【０００６】 まず、図７（ａ）に示すように、トップ
パンチ１１を上昇させるとともにボトムパンチ９を下降
させることにより、有底円筒成形体１２を圧力容器２か
ら取り出す。次に、図７（ｂ）に示すように、ボトムパ
ンチ９とともに傾斜させた成形体１２の外周面をグリッ
パー１３で挾持する。最後に、図７（ｃ）に示すよう
に、グリッパー１３を、成形体１２と平行に配置したグ
リッパー支持柱１４に沿って斜め上方にスライドさせ、
成形体１２をマンドレル３から取り外す。First, as shown in FIG. 7A, by lowering the top punch 11 and lowering the bottom punch 9, the cylindrical molded body 12 with the bottom is taken out of the pressure vessel 2. Next, as shown in FIG. 7B, the outer peripheral surface of the formed body 12 inclined together with the bottom punch 9 is held by the gripper 13. Finally, as shown in FIG. 7 (c), the gripper 13 is slid obliquely upward along a gripper support column 14 arranged in parallel with the molded body 12,
The molded body 12 is removed from the mandrel 3.
【０００７】[0007]
【発明が解決しようとする課題】 しかしながら、上記
の方法により成形体を取り出すためには、グリッパー支
持柱をマンドレルの軸と平行に配置し、グリッパーをマ
ンドレルの軸に沿って移動させる必要があるが、グリッ
パー支持柱とマンドレルとの軸心の調整は困難であり、
ＣＩＰ成形全体の効率化を図る上で妨げとなっていた。
さらに、取り出しの際に成形体を斜めに傾けて移動させ
るため、取り出した成形体をコンベア等へ移載するため
には、成形体を垂直又は水平にしなければならず、取り
出し装置の構成が複雑になる等、ＣＩＰ成形の効率化・
低コスト化を図る上で障害となっていた。However, in order to remove the compact by the above method, it is necessary to dispose the gripper support column in parallel with the axis of the mandrel and move the gripper along the axis of the mandrel. , It is difficult to adjust the axis of the gripper support column and the mandrel,
This hinders the efficiency of the entire CIP molding.
Furthermore, in order to move the molded body obliquely at the time of removal, in order to transfer the removed molded body to a conveyor or the like, the molded body must be vertical or horizontal, and the configuration of the removal device is complicated. To improve the efficiency of CIP molding
This has been an obstacle in reducing costs.
【０００８】 又、成形体が有底円筒状の場合は、成形
体内部が陰圧となっているためマンドレルと成形体が離
れにくく、グリッパーを移動させる際に、グリッパーが
成形体外周面をスリップする場合がある。これを防ぐた
めには、より強い力で成形体を挾持するか、又はグリッ
パーの移動速度を遅くする必要がある。しかし、挾持す
る力を強くすると、成形体が薄肉で、その肉厚が成形体
の内径の１５分の１程度以下の場合には成形体が破損す
る場合があり、グリッパーの移動速度を遅くすると、Ｃ
ＩＰ成形の効率が低下するという問題があった。In the case where the compact is cylindrical with a bottom, the mandrel and the compact are difficult to separate from each other because the inside of the compact is under negative pressure, and when the gripper is moved, the gripper slips on the outer peripheral surface of the compact. May be. In order to prevent this, it is necessary to clamp the formed body with a stronger force or to reduce the moving speed of the gripper. However, if the clamping force is increased, the molded body is thin, and if the thickness is less than about one-fifteenth of the inner diameter of the molded body, the molded body may be damaged. , C
There was a problem that the efficiency of IP molding was reduced.
【０００９】[0009]
【課題を解決するための手段】 本発明は、このような
状況に鑑みてなされたものであり、その目的とするとこ
ろは、成形体を破損する危険がなく、かつ、短時間で簡
易に行うことができる、乾式静水圧加圧成形における成
形体取り出し方法を提供することにある。Means for Solving the Problems The present invention has been made in view of such circumstances, and an object of the present invention is to eliminate the risk of damaging a molded body and to easily perform the molding in a short time. It is an object of the present invention to provide a method for removing a molded product in dry isostatic pressing.
【００１０】 即ち、本発明によれば、成形用ゴム型の
内周面により外周面が形成され、上記成形用ゴム型の下
部に配置したボトムパンチに一端を固定されたマンドレ
ルの周面により内周面が形成される円筒形状又は有底円
筒形状の成形空間に、成形用粉末を充填した後、圧力容
器内にて、成形用ゴム型の外周側から圧力媒体により静
水圧加圧を施すことにより成形を行う乾式静水圧加圧成
形における成形体取り出し方法であって、上記成形用ゴ
ム型の外周側を減圧した後、上記ボトムパンチを、上記
圧力容器から、上記マンドレル及び成形体とともに引き
抜き、次いで、成形体外周面を成形体周面保持手段で保
持しつつ、上記ボトムパンチを上記マンドレルとともに
上記成形体から引き抜く乾式静水圧加圧成形における成
形体取り出し方法が提供される。That is, according to the present invention, the outer peripheral surface is formed by the inner peripheral surface of the rubber mold for molding, and the inner peripheral surface is formed by the peripheral surface of the mandrel having one end fixed to a bottom punch disposed below the rubber mold for molding. After filling the molding powder in the cylindrical or bottomed cylindrical molding space in which the peripheral surface is formed, applying hydrostatic pressure with a pressure medium from the outer peripheral side of the molding rubber mold in a pressure vessel. A method for removing a molded body in dry isostatic pressing under which molding is performed by, after depressurizing the outer peripheral side of the rubber mold for molding, extracting the bottom punch from the pressure vessel together with the mandrel and the molded body, Then, while holding the outer peripheral surface of the molded body by the molded body peripheral surface holding means, the molded body is removed from the molded body with the bottom punch together with the mandrel in the dry isostatic pressing method. Provided.
【００１１】 上記の成形体取り出し方法において、成
形体の開口端面を開口端面支持手段にて当該ボトムパン
チ側から支持しつつ前記ボトムパンチを前記マンドレル
とともに成形体から引き抜くことが好ましい。又、前記
成形体が有底円筒状成形体である場合においては、ボト
ムパンチをマンドレルとともに上記成形体から引き抜く
際に、さらに、成形体の頂部を、成形体頂部保持手段に
て保持することが好ましい。In the above method for removing a molded product, it is preferable that the bottom punch is pulled out from the molded product together with the mandrel while supporting the open end face of the molded product from the bottom punch side by an open end surface supporting means. Further, when the molded body is a cylindrical molded body with a bottom, when the bottom punch is pulled out from the molded body together with the mandrel, further, the top of the molded body may be held by the molded body top holding means. preferable.
【００１２】 本発明において、上記の成形体周面保持
手段及び／又は成形体頂部保持手段は、成形体を吸着保
持するものであることが好ましい。In the present invention, it is preferable that the means for holding the peripheral surface of the molded body and / or the means for holding the top of the molded body adsorb and hold the molded body.
【００１３】[0013]
【発明の実施の形態】 本発明において、成形体は、そ
の周面を成形体周面保持手段で保持された状態で、ボト
ムパンチとともにマンドレルを成形体から引き抜くこと
により取り出される。即ち、従来は、ボトムパンチとマ
ンドレルを固定した状態で成形体を移動させることによ
り、成形体を取り出していたが、本発明では、成形体を
一定の位置に固定した状態で、ボトムパンチとともにマ
ンドレルを移動させることにより、成形体を取り出す。BEST MODE FOR CARRYING OUT THE INVENTION In the present invention, a molded body is taken out by pulling out a mandrel from a molded body together with a bottom punch in a state where the peripheral surface is held by a molded body peripheral surface holding means. That is, conventionally, the molded body was taken out by moving the molded body with the bottom punch and the mandrel fixed, but in the present invention, with the molded body fixed at a fixed position, the mandrel together with the bottom punch was The molded body is taken out by moving.
【００１４】 従って、従来の方法ではグリッパー支持
柱とマンドレルの軸心を調整することが必要であったの
に対し、本発明では軸心の調整が不要となる。又、成形
体を保持しつつマンドレルを伴ったボトムパンチを引き
抜くことにより成形体を取り出すため、成形体の取り出
しを短時間で行うことができる。又、本発明において
は、成形体を垂直に維持しつつ、ボトムパンチを移動さ
せることにより成形体を取り出すため、取り出し装置も
簡易なものでよいとともに、移載する際に成形体の角度
を変える必要もなく、ＣＩＰ成形の効率化、低コスト化
を図ることができる。Therefore, while the conventional method requires adjusting the axis of the gripper support column and the mandrel, the present invention does not require the adjustment of the axis. Further, since the molded body is taken out by pulling out the bottom punch with the mandrel while holding the molded body, the molded body can be taken out in a short time. Further, in the present invention, since the molded body is taken out by moving the bottom punch while maintaining the molded body vertically, the take-out device may be simple, and the angle of the molded body may be changed at the time of transfer. It is not necessary, and the efficiency and cost of CIP molding can be reduced.
【００１５】 本発明の成形体取り出し方法において
は、成形体の開口端面を開口端面支持手段にてボトムパ
ンチ側から支持しつつ、ボトムパンチをマンドレルとと
もに成形体から引き抜くことが好ましい。In the method for removing a molded product of the present invention, it is preferable that the bottom punch is pulled out from the molded product together with the mandrel while the open end surface of the molded product is supported from the bottom punch side by the open end surface supporting means.
【００１６】 成形体の開口端面を支持することによ
り、成形体周面を保持する力を多少弱めても、ボトムパ
ンチを引き抜く際に、成形体周面保持手段が成形体の外
周面をスリップするおそれがなくなり、マンドレルを急
速に引き抜くことができる。従って、成形体周面保持手
段が成形体を挾持するものであっても、成形体を破損す
る危険性が低くなるとともに、より短時間で成形体の取
り出しを行うことができる。開口端面を支持すること
は、特に、成形体が薄肉であったり、長尺の場合に有効
である。By supporting the opening end surface of the molded body, even if the force for holding the peripheral surface of the molded body is somewhat reduced, the peripheral surface holding means of the molded body slips on the outer peripheral surface of the molded body when the bottom punch is pulled out. There is no danger and the mandrel can be pulled out quickly. Therefore, even if the molded body peripheral surface holding means holds the molded body, the risk of damaging the molded body is reduced, and the molded body can be taken out in a shorter time. Supporting the open end face is particularly effective when the molded body is thin or long.
【００１７】 図２に、上記の開口端面支持手段の一例
を示す。開口端面支持手段１５は、Ｕ字型の開口端面支
持部１６を有し、その湾曲部１７はマンドレル３の周面
に適合するサイズを有する。開口端面支持部１６にはゴ
ム部材１８が取り付けられており、ＳＵＳ製の本体１９
が成形体１２の開口端面２０と直接接触することによ
り、成形体１２に表面傷ができるのを防いでいる。FIG. 2 shows an example of the above-mentioned open end surface support means. The open end surface support means 15 has a U-shaped open end surface support portion 16, and the curved portion 17 has a size adapted to the peripheral surface of the mandrel 3. A rubber member 18 is attached to the opening end surface supporting portion 16 and a SUS main body 19 is provided.
Directly contact the opening end surface 20 of the molded body 12 to prevent the molded body 12 from being scratched.
【００１８】 又、成形体が有底円筒形状を有する場合
においては、ボトムパンチをマンドレルとともに上記成
形体から引き抜く際に、さらに、成形体の頂部を、成形
体頂部保持手段にて保持することが好ましい。When the molded body has a cylindrical shape with a bottom, when the bottom punch is pulled out from the molded body together with the mandrel, the top of the molded body may be further held by the molded body top holding means. preferable.
【００１９】 成形体を、その周面及び頂部の双方で保
持することにより、保持する力を頂部に分散した分、周
面を保持する力を弱くすることができ、成形体周面保持
手段が成形体を挾持するものであっても、取り出しの際
に、成形体が破損する危険性をさらに低下させることが
できる。By holding the molded body on both the peripheral surface and the top, the holding force is dispersed on the top, so that the force for holding the peripheral surface can be weakened. Even if the molded body is clamped, the risk of breakage of the molded body during removal can be further reduced.
【００２０】 本発明において、上記の成形体周面保持
手段及び／又は成形体頂部保持手段は、成形体を吸着保
持するものであることが好ましい。In the present invention, it is preferable that the above-mentioned molded body peripheral surface holding means and / or the molded body top holding means hold and hold the molded body.
【００２１】 成形体の周面を挾持する場合には、挾持
する力が大きすぎると、成形体が薄肉の場合等は破損す
ることがあったが、吸着により保持することにより、成
形体が破損する危険性をより一層低下させることができ
る。When the peripheral surface of the molded body is clamped, if the clamping force is too large, the molded body may be damaged when the molded body is thin, etc. The risk of doing so can be further reduced.
【００２２】 図３に、成形体を吸着保持する成形体周
面保持手段の一例を示す。図３において、成形体周面保
持手段２１は、アルミニウム製の本体２２に、軟質のゴ
ム製の成形体吸着部２３を取り付けて成る。成形体周面
保持手段２１の内部には、成形体吸着面２４及び本体２
２にそれぞれ開口部２５、２６を有する空気吸引孔２７
が設けられている。空気吸引孔２７の本体側の開口部２
６は、真空ポンプ等の吸引手段（図示せず。）に連結さ
れる。なお、成形体吸着部２３を軟質のゴム製としたの
は、成形体１２を保持する際に、成形体１２の表面に吸
着部２３をあてがうことにより吸着もれを防ぎ、かつ、
成形体１２の表面に傷ができるのを防ぐためである。FIG. 3 shows an example of a molded body peripheral surface holding means for sucking and holding the molded body. In FIG. 3, the molded body peripheral surface holding means 21 is formed by attaching a soft rubber molded body adsorption portion 23 to a main body 22 made of aluminum. Inside the molded body peripheral surface holding means 21, the molded body suction surface 24 and the main body 2
2, air suction holes 27 having openings 25, 26, respectively.
Is provided. Opening 2 of body side of air suction hole 27
Reference numeral 6 is connected to a suction means (not shown) such as a vacuum pump. In addition, the reason why the molded body suction part 23 is made of soft rubber is that, when the molded body 12 is held, the suction leakage is prevented by applying the suction part 23 to the surface of the molded body 12, and
This is to prevent the surface of the molded body 12 from being damaged.
【００２３】[0023]
【実施例】 以下、本発明を図示の実施例を用いてさら
に詳しく説明するが、本発明はこれらの実施例に限られ
るものではない。Hereinafter, the present invention will be described in more detail with reference to the illustrated embodiments, but the present invention is not limited to these embodiments.
【００２４】 ＣＩＰ成形装置を用いて成形した外径５
２．０ｍｍ、内径４８．４ｍｍ、高さ４８０ｍｍの有底
円筒状成形体を、上記の取り出し方法を用いてＣＩＰ成
形装置から取り出した。なお、この成形体は、ナトリウ
ム−硫黄電池用のβ−アルミナ管として用いられるもの
であり、成形は２０００ｋｇｆ／ｃｍ2の圧力で行っ
た。Outer diameter 5 molded using CIP molding machine
A cylindrical molded body with a bottom having a diameter of 2.0 mm, an inner diameter of 48.4 mm, and a height of 480 mm was taken out of the CIP forming apparatus by using the above-mentioned taking out method. The molded body was used as a β-alumina tube for a sodium-sulfur battery, and was molded at a pressure of 2000 kgf / cm 2 .
【００２５】 まず、成形用ゴム型外周側の減圧を行っ
た後、図１（ａ）に示すように、ボトムパンチ９を、成
形体１２を伴ったマンドレル３とともに、圧力容器２か
ら２００ｍｍ／秒の速度で下方に引き抜き、成形体１２
の上端部が圧力容器２下端より下になる位置に配置し
た。First, after depressurizing the outer peripheral side of the rubber mold for molding, as shown in FIG. 1A, the bottom punch 9 and the mandrel 3 with the molded body 12 are removed from the pressure vessel 2 by 200 mm / sec. The molded body 12 is pulled downward at a speed of
Was disposed at a position where the upper end of the pressure vessel became lower than the lower end of the pressure vessel 2.
【００２６】 次に、図１（ｂ）に示すように、エアー
シリンダー２８を介して支持体２９に固定した成形体周
面保持手段２１を、エアーシリンダー２８により成形体
１２に向かって移動させ、成形体１２の外周面に吸着さ
せた。Next, as shown in FIG. 1B, the molded body peripheral surface holding means 21 fixed to the support 29 via the air cylinder 28 is moved toward the molded body 12 by the air cylinder 28. It was adsorbed on the outer peripheral surface of the molding 12.
【００２７】 次に、ボトムパンチ９を５０ｍｍ／秒の
速度で下方に移動させ、成形体１２の開口端面とボトム
パンチ上面との間に、開口端面支持手段１５の支持部１
６を挿入するのに必要な間隔３０を設けた。Next, the bottom punch 9 is moved downward at a speed of 50 mm / sec, and the supporting portion 1 of the opening end surface supporting means 15 is placed between the opening end surface of the molded body 12 and the upper surface of the bottom punch.
The space 30 required for inserting the 6 was provided.
【００２８】 次に、エアーシリンダー２８を介して支
持体２９に固定した開口端面支持手段１５を、エアーシ
リンダー２８により成形体１２に向かって移動させ、図
１（ｃ）に示すように、成形体１２の開口端面とボトム
パンチ上面との間の隙間３０に挿入した。Next, the opening end face supporting means 15 fixed to the support 29 via the air cylinder 28 is moved toward the molded body 12 by the air cylinder 28, and as shown in FIG. 12 was inserted into the gap 30 between the open end face and the top face of the bottom punch.
【００２９】 次に、図１（ｄ）に示すように、ボトム
パンチ９を、マンドレル３の上端部が開口端面支持手段
１５の下端より下になる位置まで、下方に移動させるこ
とにより、成形体１２よりマンドレル３を引き抜いた。Next, as shown in FIG. 1D, the bottom body 9 is moved downward to a position where the upper end of the mandrel 3 is lower than the lower end of the open end surface supporting means 15, thereby forming the molded body. The mandrel 3 was pulled out from 12.
【００３０】 次に、図１（ｅ）に示すように、エアー
シリンダー２８により開口端面支持手段１５を元の位置
に配置し、支持体２９を水平旋回して、成形体１２を成
形体置き台（図示せず。）上方に運んだ。吸引を停止
し、成形体１２を成形体置き台に置いた後、成形体周面
保持手段２１をエアーシリンダー２８により元の位置に
戻した。Next, as shown in FIG. 1 (e), the opening end face supporting means 15 is arranged at the original position by the air cylinder 28, the support 29 is horizontally turned, and the molded body 12 is placed on the molded body placing table. (Not shown). After stopping the suction and placing the molded body 12 on the molded body placing table, the molded body peripheral surface holding means 21 was returned to the original position by the air cylinder 28.
【００３１】 上記の方法では、ボトムパンチを、成形
体を伴ったマンドレルとともに圧力容器から外し、成形
体を取り出して、再度圧力容器に収納するまで２０秒で
済み、従来の方法により成形体を取りだした場合の４６
秒に比べ、２６秒短縮できた。又、成形体の取り出しに
起因する破損は発生しなかった。In the above method, the bottom punch is removed from the pressure vessel together with the mandrel with the molded body, and the molded body is taken out and stored in the pressure vessel again in 20 seconds, and the molded body is removed by the conventional method. 46 when
26 seconds were reduced compared to seconds. Also, no breakage due to removal of the molded body occurred.
【００３２】[0032]
【発明の効果】 本発明においては、成形体を垂直に維
持したまま、成形体外周面を保持しつつ、ボトムパンチ
とともにマンドレルを成形体から引き抜くことにより成
形体を取り出すため、成形体の取り出しを従来の方法に
比べ簡易な装置で行うことができ、軸心の調整も不要と
なる。又、成形体を短時間で取り出すことができ、ＣＩ
Ｐ成形の効率化・低コスト化を図ることができる。In the present invention, the molded body is taken out by pulling out the mandrel from the molded body together with the bottom punch while holding the molded body vertically while holding the molded body vertically. It can be performed with a simpler device than the conventional method, and the adjustment of the axis is not required. Also, the compact can be taken out in a short time, and the CI
The efficiency and cost of P molding can be reduced.
【００３３】 又、成形体の引き抜きの際に、成形体の
開口端面を開口端面支持手段にてボトムパンチ側から支
持すれば、その分、成形体周面を保持する力を弱くする
ことができ、かつ、スリップのおそれがないことからマ
ンドレルを急速に引き抜くことができる。従って、成形
体を破損することなく、より短時間で成形体の取り出し
を行うことができる。In addition, when the molded body is pulled out, if the opening end surface of the molded body is supported from the bottom punch side by the opening end surface supporting means, the force for holding the peripheral surface of the molded body can be reduced correspondingly. In addition, the mandrel can be quickly pulled out since there is no risk of slipping. Therefore, the molded body can be taken out in a shorter time without damaging the molded body.
【００３４】 又、成形体が有底円筒状を有する場合
は、その周面及び頂部の双方において保持することによ
り、保持する力を頂部に分散することができ、成形体が
破損する危険性をさらに低下させることができる。When the molded body has a cylindrical shape with a bottom, by holding both the peripheral surface and the top, the holding force can be dispersed to the top, and the danger of the molded body being damaged is reduced. It can be further reduced.
【００３５】 さらに、成形体の保持を吸引により行う
ことにより、成形体が破損する危険性をより一層低下さ
せることができる。Further, by holding the molded body by suction, the risk of breakage of the molded body can be further reduced.
【図１】 （ａ）〜（ｅ）本発明の成形体取り出し方法
の一例を示す説明図である。FIGS. 1A to 1E are explanatory views showing an example of a method for removing a molded article of the present invention.
【図２】 （ａ）開口端面支持手段の一例を示す説明図
である。（ｂ）（ａ）のＡ−Ａ線断面図である。FIG. 2A is an explanatory view showing an example of an opening end surface supporting means. (B) It is the sectional view on the AA line of (a).
【図３】 成形体を吸着保持する成形体周面保持手段の
一例を示す断面図である。FIG. 3 is a cross-sectional view illustrating an example of a molded body peripheral surface holding unit that suction-holds a molded body.
【図４】 ＣＩＰ成形方法の粉末充填工程を示す断面説
明図である。FIG. 4 is an explanatory sectional view showing a powder filling step of the CIP molding method.
【図５】 ＣＩＰ成形方法の加圧工程を示す断面説明図
である。FIG. 5 is an explanatory sectional view showing a pressing step of the CIP molding method.
【図６】 ＣＩＰ成形方法の減圧工程を示す断面説明図
である。FIG. 6 is an explanatory sectional view showing a pressure reducing step of the CIP molding method.
【図７】 （ａ）〜（ｃ）従来の成形体取り出し方法を
示す説明図である。（ｄ）（ｂ）のＡ−Ａ線断面図であ
る。FIGS. 7A to 7C are explanatory views showing a conventional method for removing a molded body. (D) It is sectional drawing on the AA line of (b).
１・・・給粉ノズル、２・・・圧力容器、３・・・マンドレル、
４・・・成形用ゴム型、５・・・圧媒シールゴム、６・・・圧媒
出入口、７・・・シールゴムホルダー、８・・・成形空間、９
・・・ボトムパンチ、１０・・・トップゴム栓、１１・・・トッ
プパンチ、１２・・・成形体、１３・・・グリッパー、１４・・
・グリッパー支持柱、１５・・・開口端面支持手段、１６・・
・開口端面支持部、１７・・・湾曲部、１８・・・ゴム部材、
１９・・・本体、２０・・・開口端面、２１・・・成形体周面保
持手段、２２・・・本体、２３・・・成形体吸着部、２４・・・
成形体吸着面、２５・・・開口部、２６・・・開口部、２７・・
・空気吸引孔、２８・・・エアーシリンダー、２９・・・支持
体、３０・・・成形体の開口端面とボトムパンチ上面との
間の隙間。1 ... powder feeding nozzle, 2 ... pressure vessel, 3 ... mandrel,
4 ... molding rubber mold, 5 ... pressure medium sealing rubber, 6 ... pressure medium inlet / outlet, 7 ... seal rubber holder, 8 ... molding space, 9
... Bottom punch, 10 ... Top rubber stopper, 11 ... Top punch, 12 ... Molded body, 13 ... Gripper, 14 ...
.Gripper support columns, 15 ... Open end surface support means, 16.
・ Open end face support portion, 17: curved portion, 18: rubber member,
19 ... body, 20 ... opening end face, 21 ... molded body peripheral surface holding means, 22 ... body, 23 ... molded body suction part, 24 ...
Molded body suction surface, 25 ... opening, 26 ... opening, 27 ...
-Air suction hole, 28 ... Air cylinder, 29 ... Support, 30 ... Gap between the open end face of the molded article and the top face of the bottom punch.
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.6，ＤＢ名) B30B 11/00 B22F 3/04 B28B 3/00 102 ──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. 6 , DB name) B30B 11/00 B22F 3/04 B28B 3/00 102
Claims (4)
成され、 当該成形用ゴム型の下部に配置したボトムパンチに一端
を固定されたマンドレルの周面により内周面が形成され
る円筒形状又は有底円筒形状の成形空間に、 成形用粉末を充填した後、 圧力容器内にて、当該成形用ゴム型の外周側から圧力媒
体により静水圧加圧を施すことにより成形を行う乾式静
水圧加圧成形における成形体取り出し方法であって、 当該成形用ゴム型の外周側を減圧した後、 当該ボトムパンチを、当該圧力容器から、当該マンドレ
ル及び成形体とともに引き抜き、 次いで、成形体外周面を成形体周面保持手段で保持しつ
つ、当該ボトムパンチを当該マンドレルとともに当該成
形体から引き抜くことを特徴とする乾式静水圧加圧成形
における成形体取り出し方法。1. An outer peripheral surface is formed by an inner peripheral surface of a rubber mold for molding, and an inner peripheral surface is formed by a peripheral surface of a mandrel having one end fixed to a bottom punch disposed below the rubber mold for molding. After filling the molding powder into the cylindrical or bottomed cylindrical molding space, the molding is performed by applying hydrostatic pressure with a pressure medium from the outer peripheral side of the molding rubber mold in a pressure vessel. A method for taking out a molded product in hydrostatic pressure molding, wherein after the outer peripheral side of the molding rubber mold is depressurized, the bottom punch is pulled out from the pressure vessel together with the mandrel and the molded product. Removing the bottom punch together with the mandrel from the green body while holding the surface with the green body peripheral surface holding means. .
段にて当該ボトムパンチ側から支持しつつ当該ボトムパ
ンチを当該マンドレルとともに当該成形体から引き抜く
請求項１に記載の乾式静水圧加圧成形における成形体取
り出し方法。2. The dry isostatic pressing according to claim 1, wherein the bottom punch is pulled out of the compact together with the mandrel while supporting the open end face of the compact from the bottom punch side by an open end face supporting means. Method for removing molded body in
合において、当該ボトムパンチを当該マンドレルととも
に当該成形体から引き抜く際に、さらに、当該成形体の
頂部を、成形体頂部保持手段にて保持する請求項１又は
２に記載の乾式静水圧加圧成形における成形体取り出し
方法。3. In the case where the molded body is a cylindrical molded body with a bottom, when the bottom punch is pulled out of the molded body together with the mandrel, the top of the molded body is further transferred to the molded body top holding means. The method for removing a molded product in dry isostatic pressing according to claim 1 or 2, wherein the molded product is held.
成形体頂部保持手段が、当該成形体を吸着保持する請求
項１、２又は３に記載の乾式静水圧加圧成形における成
形体取り出し方法。4. The molded body removal in dry hydrostatic pressure molding according to claim 1, wherein the molded body peripheral surface holding means and / or the molded body top holding means suck and hold the molded body. Method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31232795A JP2898592B2 (en) | 1995-11-30 | 1995-11-30 | Mold removal method in dry isostatic pressing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31232795A JP2898592B2 (en) | 1995-11-30 | 1995-11-30 | Mold removal method in dry isostatic pressing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH09155597A JPH09155597A (en) | 1997-06-17 |
| JP2898592B2 true JP2898592B2 (en) | 1999-06-02 |
Family
ID=18027908
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP31232795A Expired - Lifetime JP2898592B2 (en) | 1995-11-30 | 1995-11-30 | Mold removal method in dry isostatic pressing |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2898592B2 (en) |
-
1995
- 1995-11-30 JP JP31232795A patent/JP2898592B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH09155597A (en) | 1997-06-17 |
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