Deprecated: The each() function is deprecated. This message will be suppressed on further calls in /home/zhenxiangba/zhenxiangba.com/public_html/phproxy-improved-master/index.php on line 456
JPH0367798B2 - - Google Patents
[go: Go Back, main page]

JPH0367798B2 - - Google Patents

Info

Publication number
JPH0367798B2
JPH0367798B2 JP1194226A JP19422689A JPH0367798B2 JP H0367798 B2 JPH0367798 B2 JP H0367798B2 JP 1194226 A JP1194226 A JP 1194226A JP 19422689 A JP19422689 A JP 19422689A JP H0367798 B2 JPH0367798 B2 JP H0367798B2
Authority
JP
Japan
Prior art keywords
pressure
valve
manual valve
medium
opening degree
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
Application number
JP1194226A
Other languages
Japanese (ja)
Other versions
JPH0360897A (en
Inventor
Kinshi Nohara
Takashi Ito
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nikkiso Co Ltd
Original Assignee
Nikkiso Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Nikkiso Co Ltd filed Critical Nikkiso Co Ltd
Priority to JP19422689A priority Critical patent/JPH0360897A/en
Publication of JPH0360897A publication Critical patent/JPH0360897A/en
Publication of JPH0367798B2 publication Critical patent/JPH0367798B2/ja
Granted legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B30PRESSES
    • B30BPRESSES IN GENERAL
    • B30B11/00Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses
    • B30B11/001Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses using a flexible element, e.g. diaphragm, urged by fluid pressure; Isostatic presses

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Powder Metallurgy (AREA)
  • Press Drives And Press Lines (AREA)

Description

【発明の詳細な説明】 [産業上の利用分野] 本発明は、金属やプラスチツク等の粉末を高い
圧力下で成形する冷間等方圧成形装置(以下CIP
装置と称する)の減圧装置に関する。
Detailed Description of the Invention [Industrial Application Field] The present invention is applied to a cold isostatic pressing apparatus (hereinafter referred to as CIP) that molds powders such as metals and plastics under high pressure.
(referred to as "device").

[従来の技術] 一般にCIP装置は、第3図に示すように、圧力
容器10に対し、リザーバ12内の圧力媒体液1
4を昇圧送入して圧力容器10内の成形処理室1
0a内の圧力を所定の圧力まで昇圧する昇圧ポン
プ16等から構成される。このような構成におい
て、ゴム等からなる成形型18内に充填される被
成形粉末20は、開閉機構22により開閉される
カバー23およびピン24を介して成形処理室1
0a内に収納され、次いで昇圧ポンプ16を介し
て昇圧され、所定の圧力により所定の時間加圧さ
れて形成される。次いで、減圧装置26を介して
成形処理室10a内の圧力媒体液14がリザーバ
12内に還流されることにより成形処理室10a
内の圧力が減圧され、そしてこの減圧が完了した
後に成形型18内の被成形体20が成形処理室1
0aから取り出される。
[Prior Art] Generally, a CIP device, as shown in FIG.
4 is fed under increased pressure to the molding processing chamber 1 in the pressure vessel 10.
It is composed of a boost pump 16 and the like that boosts the pressure inside 0a to a predetermined pressure. In such a configuration, the powder to be molded 20 filled into the mold 18 made of rubber or the like is transferred to the molding processing chamber 1 through the cover 23 and the pin 24, which are opened and closed by the opening/closing mechanism 22.
0a, and is then pressurized via the boost pump 16 and pressurized at a predetermined pressure for a predetermined period of time. Next, the pressure medium liquid 14 in the molding process chamber 10a is returned to the reservoir 12 via the pressure reducing device 26, so that the molding process chamber 10a is
The pressure inside the mold is reduced, and after this pressure reduction is completed, the molded object 20 in the mold 18 is transferred to the molding processing chamber 1.
It is taken out from 0a.

このようなCIP装置は、他の加圧成形方法と比
較して、高い成形圧力が得られると同時に、この
成形圧は等方向性かつ高密度であるため、均質な
成形品が得られると共に複雑な形状の製品であつ
ても加工できる利点を有する。
Compared to other pressure molding methods, this type of CIP equipment can obtain high molding pressure, and at the same time, this molding pressure is isodirectional and dense, resulting in homogeneous molded products and less complexity. It has the advantage of being able to process even products with different shapes.

しかしながら、このように成形圧力が高いCIP
装置においては、成形品に割れ等の損傷を発生さ
せないためには、高圧成形からの減圧工程を成形
品の種類に対応した時間的パターンで遂行するこ
とが不可欠である。従来のこの種のCIP装置の減
圧装置においては前記機能が十分に達成されてい
ないかつた。
However, CIP with high molding pressure like this
In order to prevent damage such as cracking to the molded product, it is essential to perform the depressurization process from high-pressure molding in a time pattern that corresponds to the type of molded product. In the conventional pressure reducing device of this type of CIP device, the above function has not been fully achieved.

すなわち、減圧装置26は、一般に第3図に示
すように、開度調節により流通オリフイス径が調
節される手動バルブ26aと空気作動型開閉弁2
6bとから構成されており、ここで手動バルブと
しての流量調整弁26aはその開度を予め適用さ
れるCIP装置に対応した所定の開度に設定されて
おり、減圧工程においては開閉弁26bの開、閉
を制御するとにより減圧パターンが規定されるよ
う構成されている。
That is, as shown in FIG. 3, the pressure reducing device 26 generally includes a manual valve 26a whose flow orifice diameter is adjusted by adjusting the opening degree, and an air-operated on-off valve 2.
6b, and here, the opening degree of the flow rate adjustment valve 26a as a manual valve is set in advance to a predetermined opening degree corresponding to the CIP device to which it is applied, and in the pressure reduction process, the opening degree of the on-off valve 26b is set in advance. It is configured such that a pressure reduction pattern is defined by controlling opening and closing.

しかしながら、このような減圧方式において
は、成形処理室10a内の減圧条件は被成形粉末
20の容積や圧縮率等によつて変化するものであ
るため、各成形品毎に対する成形パターンが一定
せず、すなわち、所定の減圧パターンの再現性が
達成されず、このため減圧工程において成形品に
往々にして破損が発生した。
However, in such a depressurization method, the depressurization conditions in the molding processing chamber 10a change depending on the volume and compression ratio of the powder to be molded 20, so the molding pattern for each molded product is not constant. That is, the reproducibility of a predetermined pressure reduction pattern was not achieved, and as a result, molded products were often damaged during the pressure reduction process.

なお、減圧パターンの再現性は、例えば油圧ユ
ニツトやサーボ弁等で構成される減圧シリンダ装
置を備えることにより達成することができるが、
このような方法は、装置を複雑かつ大型化すると
共に価格を大幅に上昇させる。
Note that the reproducibility of the pressure reduction pattern can be achieved by, for example, providing a pressure reduction cylinder device composed of a hydraulic unit, a servo valve, etc.
Such a method increases the complexity and size of the equipment and significantly increases the cost.

従来、冷間等方圧成形装置の減圧に関するもの
として、例えば、特開昭57−109597号に記載さ
れた大型油圧シリンダを用いて圧力信号に従つて
大型油圧シリンダを移動することにより減圧を制
御するもの、高圧減圧系と1乃至2段階の低圧
減圧系に分れた配管を備え、弁、空気圧作動型自
動流量調整弁、デジタルレリーフ型自動流量調整
弁、電空変換器、圧力トランスデユーサの信号と
プログラム設定器の出力信号との間の偏差信号等
を用いて、低圧域(500Kg/cm2以下)の減圧を制
御するもの、複数の手動バルブの開度調整と複
数の減圧回路を用いることにより減圧時間を制御
するもの等があつた。
Conventionally, regarding pressure reduction in cold isostatic press forming equipment, for example, a large hydraulic cylinder described in JP-A-57-109597 has been used to control pressure reduction by moving the large hydraulic cylinder according to a pressure signal. It is equipped with piping divided into a high-pressure reduction system and a 1- to 2-stage low-pressure reduction system, and includes valves, pneumatically operated automatic flow control valves, digital relief automatic flow control valves, electro-pneumatic converters, and pressure transducers. Controls pressure reduction in the low pressure range (500Kg/ cm2 or less) using the deviation signal between the signal and the output signal of the program setting device, and controls the opening of multiple manual valves and multiple pressure reduction circuits. Some of them were used to control the decompression time.

しかしながら、これらには、大型油圧シリン
ダ方式は装置が大型化するため高価な大型のシリ
ンダたる容器によつては微量コントロールが困難
であると共に保守、点検も困難となり、前記
の方式は低圧域(500Kg/cm2以下)を制御するも
のであり、前記の方式は300Kg/cm2以下より
大気圧までの減圧であるため運転中の減圧はでき
ない等の欠点があつた。
However, since the large hydraulic cylinder method increases the size of the equipment, it is difficult to control minute amounts in expensive large cylinder containers, and maintenance and inspection are also difficult. /cm 2 or less), and the above-mentioned method had drawbacks such as being unable to reduce the pressure during operation because it reduced the pressure from 300 kg/cm 2 or less to atmospheric pressure.

[発明が解決しようとする課題] 本発明は、超高圧から大気圧に至る幅広い圧力
範囲に亘つて所望の減圧パターンを単純な機器構
成によつて与えることにより、減圧工程中に起る
製品割れ等の欠陥をより有効に防止し得る冷間等
方圧成形装置の減圧装置を提供することを目的と
する。
[Problems to be Solved by the Invention] The present invention provides a desired pressure reduction pattern over a wide pressure range from ultra-high pressure to atmospheric pressure using a simple equipment configuration, thereby reducing product cracking that occurs during the pressure reduction process. It is an object of the present invention to provide a pressure reducing device for a cold isostatic press molding device that can more effectively prevent such defects.

[課題を解決するための手段] 本発明によれば、高圧の圧力容器と大気圧のリ
ザーバとの間に圧力媒体を介して配設する冷間等
方圧成形装置の減圧装置において、バルブステム
の回転による開度調節により流通オリフイス径を
調節して圧力媒体の圧力を調節する手動バルブ
と、空気圧による開度調節により圧力媒体の圧力
を調節する空気圧作動弁とを前記圧力容器とリザ
ーバとを連通接続する配管に接続配置し、さらに
前記手動バルブおよび空気圧作動弁を設けた前記
配管の上流側に圧力媒体の圧力を検出してこれを
電気信号に変換する圧力トランスジユーサを設
け、この圧力トランスジユーサにより検出された
圧力信号を任意に設定された減圧プログラムパタ
ーン上の圧力と比較して検出した偏差によりサー
ボアンプを介してサーボモータを作動させるプロ
グラムコントローラを設け、前記手動バルブのバ
ルブステムを回転させるハンドル部分に前記サー
ボモータの回転軸と軸結合したハンドル押えを取
り付け、前記圧力トランスジユーサによる圧力媒
体の検出圧力信号によりサーボモータのフイード
バツク制御を行つて手動バルブのバルブステムを
回転させ、前記手動バルブの開度を圧力媒体の圧
力と相関させて調節するよう構成することを特徴
とする冷間等方圧成形装置の減圧装置が提供され
る。
[Means for Solving the Problems] According to the present invention, in a pressure reducing device of a cold isostatic press forming apparatus disposed between a high pressure pressure vessel and an atmospheric pressure reservoir via a pressure medium, the valve stem A manual valve that adjusts the pressure of the pressure medium by adjusting the diameter of the flow orifice by adjusting the opening by rotation of the valve, and a pneumatically operated valve that adjusts the pressure of the pressure medium by adjusting the opening by air pressure are connected to the pressure vessel and the reservoir. A pressure transducer for detecting the pressure of the pressure medium and converting it into an electrical signal is provided on the upstream side of the piping, which is connected to the piping to be communicated and further provided with the manual valve and the pneumatically operated valve, and A program controller is provided that compares the pressure signal detected by the transducer with the pressure on an arbitrarily set pressure reduction program pattern and operates a servo motor via a servo amplifier based on the detected deviation, and the program controller operates a servo motor via a servo amplifier. A handle holder connected to the rotating shaft of the servo motor is attached to the handle part that rotates the manual valve, and the valve stem of the manual valve is rotated by performing feedback control of the servo motor based on the pressure signal detected by the pressure medium by the pressure transducer. There is provided a pressure reducing device for a cold isostatic press molding apparatus, characterized in that the opening degree of the manual valve is adjusted in correlation with the pressure of the pressure medium.

本発明の好適な態様では、圧力が15000Kg/cm2
未満の高圧装置において、減圧系統の配管に手動
バルブを設置し、この手動バルブのハンドル部分
なサーボモータと一体をなすハンドル押えを取り
付けて、サーボモータの動きに合せてバルブステ
ムが回転するように構成する。
In a preferred embodiment of the present invention, the pressure is 15000Kg/cm 2
In a high-pressure device with a pressure lower than Configure.

内部流体の圧力は高圧配管系に配置された圧力
トランスデユーサにより検出され、圧力は電気信
号に変換される。この圧力信号はプログラムコン
トローラに送られ、プログラムコントローラに任
意にセツトされた減圧プログラムパターン上の圧
力と比較される。ここで圧力の偏差が大きけれ
ば、プログラムコントローラはサーボアンプを通
してサーボモータを作動させ、バルブハンドルを
回してバルブを大きく開き、偏差が少なければ、
バルブを閉じる信号がサーボアンプに入力され
る。
The pressure of the internal fluid is detected by a pressure transducer located in the high pressure piping system, and the pressure is converted into an electrical signal. This pressure signal is sent to the program controller and compared with the pressure on the pressure reduction program pattern arbitrarily set in the program controller. If the pressure deviation is large, the program controller operates the servo motor through the servo amplifier, turns the valve handle to open the valve wide, and if the deviation is small,
A signal to close the valve is input to the servo amplifier.

高精度の減圧パターンを得たい場合は、Cv
の小さいマイクロメタリングバルブを用いたり、
減圧系統を複数にし、各々Cv値の異なるバルブ
を配して、複数の配管を使い分けることにより容
易にこれを達成し得る。
If you want to obtain a highly accurate pressure reduction pattern, use a micrometering valve with a small Cv value,
This can be easily achieved by providing multiple depressurization systems, arranging valves with different C v values, and using multiple piping properly.

[作用] 前記したように、一般に冷間等方圧成形装置の
減圧装置においては、圧力媒体を介する圧力調節
は、開度調節による流通オリフイス径が調節され
る手動バルブと空気作動型開閉弁とにより行われ
ており、ここで手動バルブの流量調整弁は、通常
はその開度を予め適用されるCIP装置に対応した
所定の開度に設定されていて、減圧工程において
は空気作動型開閉弁の開、閉を制御することによ
り減圧パターンが規定されるよう構成されてい
る。このため、比較的低圧域での圧力調節は空気
作動型開閉弁のみの調節によつて容易であるが、
高圧域においては、操作毎に手動バルブの開度を
主として経験によつて調節する必要があるため、
幅広い圧力域での安定した操作は必ずしも望み得
なかつた。
[Function] As mentioned above, in a pressure reducing device for a cold isostatic press molding device, pressure adjustment via a pressure medium is generally performed by a manual valve in which the diameter of the flow orifice is adjusted by adjusting the opening degree, or by an air-operated on-off valve. The manual valve flow control valve is normally set to a predetermined opening corresponding to the applied CIP device, and in the depressurization process, an air-operated on-off valve is used. The pressure reduction pattern is defined by controlling the opening and closing of the valve. For this reason, pressure adjustment in a relatively low pressure range is easy by adjusting only the air-operated on-off valve;
In high pressure ranges, it is necessary to adjust the opening degree of the manual valve for each operation mainly based on experience.
Stable operation over a wide pressure range could not always be expected.

本発明は、この手動バルブを圧力媒体の圧力と
相関させるフイードバツク制御によりサーボモー
タを使用して調節するものである。
The present invention uses a servo motor to regulate this manual valve with feedback control that correlates to the pressure of the pressure medium.

従来、手動バルブは、その開度を予め適用され
るCIP装置に対応した所定の開度に設定するもの
として固定的に考えられており、操作中にこの開
度を変化させて積極的に圧力調節を行うことは本
発明が初めて開示するものである。
Conventionally, manual valves have been thought of as having a fixed opening degree that is set in advance to a predetermined opening degree that corresponds to the applied CIP device, and this opening degree is changed during operation to actively control pressure. Making adjustments is disclosed for the first time by the present invention.

[実施例] 以下に実施例により本発明を更に詳細に説明す
るが、本発明は以下の実施例にのみ限定されるも
のではない。
[Examples] The present invention will be explained in more detail with reference to Examples below, but the present invention is not limited only to the following Examples.

第1図は、本発明による冷間等方圧成形装置の
減圧装置の配管系の1実施例を説明するためのフ
ローシート、第2図は、ハンドル押えを介してサ
ーボモータを装着した手動バルブを示す図、第3
図は、従来の冷間等方圧成形装置の構成を説明す
るためにその一部を断面で示した構成図である。
Fig. 1 is a flow sheet for explaining one embodiment of the piping system of the pressure reducing device of the cold isostatic press molding apparatus according to the present invention, and Fig. 2 is a manual valve equipped with a servo motor via a handle holder. Figure 3 showing
The figure is a configuration diagram showing a part of a conventional cold isostatic press forming apparatus in cross section to explain the configuration thereof.

第1図において、28は圧力容器、30はリザ
ーバ、32は手動バルブ、34は空気圧作動弁、
36は圧力トランスデユーサ、38はプログラム
コントローラ、40はサーボアンプ、42はサー
ボモータ、44は昇圧ポンプ、46はモータであ
る。第2図において、48はバルブステム、50
はバルブハンドル、52はサーボモータ、54は
ハンドル押え、56はモータシヤフト、58はパ
ツキングランド、60はバルブボデイ、62は高
圧チユーブ配管(減圧側)である。
In FIG. 1, 28 is a pressure vessel, 30 is a reservoir, 32 is a manual valve, 34 is a pneumatically operated valve,
36 is a pressure transducer, 38 is a program controller, 40 is a servo amplifier, 42 is a servo motor, 44 is a boost pump, and 46 is a motor. In FIG. 2, 48 is a valve stem, 50
52 is a valve handle, 52 is a servo motor, 54 is a handle holder, 56 is a motor shaft, 58 is a packing gland, 60 is a valve body, and 62 is a high pressure tube piping (reduction side).

第1図に示すように、高圧の圧力容器28と大
気圧のリザーバ30との間に圧力媒体を介して冷
間等方圧成形装置の減圧装置を配設する。配管系
に、バルブステムの回転による開度調節により流
通オリフイス径を調節して圧力媒体の圧力を調節
する手動バルブ32と、空気圧による開度調節に
より圧力媒体の圧力を調節する空気圧作動弁34
と、これらの上流にあつて圧力媒体の圧力を検出
し電気信号に変換してプログラムコントローラに
送る圧力トランスデユーサ36とを設ける。圧力
トランスデユーサによつて検出変換された圧力信
号は、プログラムコントローラ38において、任
意に設定された減圧プログラムパターン上の圧力
と比較され、この結果検出された偏差によりサー
ボアンプ40を介してサーボモータ42を作動さ
せる。
As shown in FIG. 1, a pressure reducing device of a cold isostatic press forming apparatus is disposed between a high-pressure pressure vessel 28 and an atmospheric pressure reservoir 30 via a pressure medium. The piping system includes a manual valve 32 that adjusts the pressure of the pressure medium by adjusting the diameter of the flow orifice by adjusting the opening degree by rotating the valve stem, and a pneumatically operated valve 34 that adjusts the pressure of the pressure medium by adjusting the opening degree using air pressure.
and a pressure transducer 36 located upstream of these, which detects the pressure of the pressure medium, converts it into an electrical signal, and sends it to the program controller. The pressure signal detected and converted by the pressure transducer is compared with the pressure on the arbitrarily set pressure reduction program pattern in the program controller 38, and the deviation detected as a result is transmitted to the servo motor via the servo amplifier 40. 42 is activated.

第2図に示すように、手動バルブ32のバルブ
ステム48を回転させるバルブハンドル部分50
にサーボモータ52と一体をなすハンドル押え5
4を取付けることにより、サーボモータの動作に
応じて手動バルブのバルブステム48が回転す
る。これにより、バルブステムの回転による開度
調節が行われ、手動バルブの流通オリフイス径が
変化して圧力媒体の圧力が調節される。
As shown in FIG. 2, a valve handle portion 50 rotates the valve stem 48 of the manual valve 32.
A handle holder 5 is integrated with a servo motor 52.
4, the valve stem 48 of the manual valve rotates in response to the operation of the servo motor. As a result, the opening degree is adjusted by rotating the valve stem, and the diameter of the flow orifice of the manual valve is changed to adjust the pressure of the pressure medium.

本発明により、日機装製CIP装置(日機装東村
山製作所設置、最高使用圧力4200Kg/cm2)におけ
る実験の結果、超高圧手動バルブを使用して、従
来できなかつた高圧域からの減圧パターンの制御
に成功した。
As a result of experiments using the Nikkiso CIP device (installed at Nikkiso Higashimurayama Plant, maximum working pressure 4200Kg/cm 2 ), the present invention succeeded in controlling a depressurization pattern from a high pressure range, which was previously impossible, using an ultra-high pressure manual valve. did.

[発明の効果] 本発明によれば、超高圧から大気圧に至る幅広
い圧力範囲に渡つて所望の減圧パターンを単純な
機器構成によつて与えることにより、減圧工程中
に起る製品割れ等の欠陥をより有効に防止し得る
冷間等方圧成形装置の減圧装置が提供される。
[Effects of the Invention] According to the present invention, by providing a desired pressure reduction pattern over a wide pressure range from ultra-high pressure to atmospheric pressure with a simple equipment configuration, product cracking etc. that occur during the pressure reduction process can be prevented. Provided is a pressure reducing device for a cold isostatic press molding device that can more effectively prevent defects.

本発明の装置にあつては、高圧から低圧域まで
の減圧を任意の電気信号によつて変化させること
ができるため、粉末成形多層材料の圧着成形等に
おける減圧時の減圧速度に起因する割れや剥離等
の欠陥をなくすことができ、処理量に応じてコン
トローラを設定することにより減圧をコントロー
ルすることができ、ステツピングモータや大型シ
リンダでは得られなかつた滑らかなバルブ開度調
整により適切な減圧が超高圧より大気圧まで幅広
い圧力利用域で可能となり、超高圧下(4000Kg/
cm2程度以上)での滅菌効果を利用した臓器や薬品
等の常温保存においても減圧による破損、膨張を
防止することができる。また、超高圧シリンダや
特別な機器を使用せずに大部分を市販の機器で構
成するため大幅にコストを低減し得ると共に、装
置が単純化し、メンテナンスも容易となつた。
In the device of the present invention, since the pressure reduction from high pressure to low pressure range can be changed by an arbitrary electric signal, it is possible to prevent cracks caused by the pressure reduction speed during compression molding of powder molded multilayer materials, etc. Defects such as peeling can be eliminated, and pressure reduction can be controlled by setting the controller according to the processing amount. Appropriate pressure reduction can be achieved by smooth valve opening adjustment that cannot be achieved with stepping motors or large cylinders. is possible in a wide pressure range from ultra-high pressure to atmospheric pressure, and under ultra-high pressure (4000Kg/
It can also prevent damage and expansion due to reduced pressure when storing organs, drugs, etc. at room temperature using the sterilization effect (approximately 2 cm2 or more). In addition, since most of the equipment is made up of commercially available equipment without using an ultra-high pressure cylinder or special equipment, costs can be significantly reduced, and the equipment is simplified and maintenance becomes easier.

更に、本発明による冷間等方圧成形装置の減圧
装置は、疑似等方圧成形装置、HIP、FRM製造
用ガス圧プレス、水熱合成装置、超臨界流体によ
る分離抽出装置、高圧液体のサンプリング装置に
適用することができる。
Furthermore, the pressure reducing device of the cold isostatic press forming apparatus according to the present invention can be used for pseudo isostatic press forming apparatus, HIP, gas pressure press for FRM production, hydrothermal synthesis apparatus, separation and extraction apparatus using supercritical fluid, sampling of high pressure liquid. It can be applied to the device.

【図面の簡単な説明】[Brief explanation of drawings]

第1図は、本発明による冷間等方圧成形装置の
減圧装置の配管系の1実施例を説明するためのフ
ローシート、第2図は、ハンドル押えを介してサ
ーボモータを装着した手動バルブを示す図、第3
図は、従来の冷間等方圧成形装置の構成を説明す
るためにその一部を断面で示した構成図である。 10……圧力容器、10a……成形処理室、1
2……リザーバ、14……圧力媒体液、16……
昇圧ポンプ、18……成形型、20……被成形粉
末、22……開閉機構、24……ピン、26……
減圧装置、26a……手動バルブ、26b……空
気作動型開閉弁、28……圧力容器、30……リ
ザーバ、32……手動バルブ、34……空気圧作
動弁、36……圧力トランスデユーサ、38……
プログラムコントローラ、40……サーボアン
プ、42……サーボモータ、44……昇圧ポン
プ、46……モータ、48……バルブステム、5
0……バルブハンドル、52……サーボモータ、
54……ハンドル押え、56……モータシヤフ
ト、58……パツキングランド、60……バルブ
ボデイ、62……高圧チユーブ配管(減圧側)。
Fig. 1 is a flow sheet for explaining one embodiment of the piping system of the pressure reducing device of the cold isostatic press molding apparatus according to the present invention, and Fig. 2 is a manual valve equipped with a servo motor via a handle holder. Figure 3 showing
The figure is a configuration diagram showing a part of a conventional cold isostatic press forming apparatus in cross section to explain the configuration thereof. 10... Pressure vessel, 10a... Molding processing chamber, 1
2...Reservoir, 14...Pressure medium liquid, 16...
Boosting pump, 18... Molding mold, 20... Powder to be molded, 22... Opening/closing mechanism, 24... Pin, 26...
Pressure reducing device, 26a...manual valve, 26b...air-operated on-off valve, 28...pressure vessel, 30...reservoir, 32...manual valve, 34...pneumatically operated valve, 36...pressure transducer, 38...
Program controller, 40... Servo amplifier, 42... Servo motor, 44... Boost pump, 46... Motor, 48... Valve stem, 5
0... Valve handle, 52... Servo motor,
54... Handle holder, 56... Motor shaft, 58... Packing gland, 60... Valve body, 62... High pressure tube piping (reduction side).

Claims (1)

【特許請求の範囲】 1 高圧の圧力容器と大気圧のリザーバとの間に
圧力媒体を介して配設する冷間等方圧成形装置の
減圧装置において、 バルブステムの回転による開度調節により流通
オリフイス径を調節して圧力媒体の圧力を調節す
る手動バルブと、空気圧による開度調節により圧
力媒体の圧力を調節する空気圧作動弁とを前記圧
力容器とリザーバとを連通接続する配管に接続配
置し、 さらに前記手動バルブおよび空気圧作動弁を設
けた前記配管の上流側に圧力媒体の圧力を検出し
てこれを電気信号に変換する圧力トランスジユー
サを設け、この圧力トランスジユーサにより検出
された圧力信号を任意に設定された減圧プログラ
ムパターン上の圧力と比較して検出した偏差によ
りサーボアンプを介してサーボモータを作動させ
るプログラムコントローラを設け、 前記手動バルブのバルブステムを回転させるハ
ンドル部分に前記サーボモータの回転軸と軸結合
したハンドル押えを取り付け、 前記圧力トランスジユーサによる圧力媒体の検
出圧力信号によりサーボモータのフイードバツク
制御を行つて手動バルブのバルブステムを回転さ
せ、前記手動バルブの開度を圧力媒体の圧力と相
関させて調節するよう構成することを特徴とする
冷間等方圧成形装置の減圧装置。
[Scope of Claims] 1. In a pressure reducing device for a cold isostatic press forming device that is disposed between a high-pressure pressure vessel and an atmospheric pressure reservoir via a pressure medium, the flow is controlled by adjusting the opening degree by rotating a valve stem. A manual valve that adjusts the pressure of the pressure medium by adjusting the orifice diameter and a pneumatically operated valve that adjusts the pressure of the pressure medium by adjusting the opening degree using air pressure are connected to the piping that communicates with the pressure vessel and the reservoir. Further, a pressure transducer for detecting the pressure of the pressure medium and converting it into an electrical signal is provided on the upstream side of the piping in which the manual valve and the pneumatically operated valve are provided, and the pressure detected by the pressure transducer is A program controller is provided that compares the signal with the pressure on an arbitrarily set pressure reduction program pattern and operates a servo motor via a servo amplifier based on the detected deviation, and the servo is connected to a handle portion that rotates the valve stem of the manual valve. A handle holder is attached that is axially connected to the rotating shaft of the motor, and the servo motor is feedback-controlled by the pressure signal detected by the pressure medium by the pressure transducer to rotate the valve stem of the manual valve, thereby controlling the opening degree of the manual valve. A pressure reducing device for a cold isostatic press forming apparatus, characterized in that the pressure is adjusted in correlation with the pressure of a pressure medium.
JP19422689A 1989-07-28 1989-07-28 Pressure reducing device in cold isostatic press forming apparatus Granted JPH0360897A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP19422689A JPH0360897A (en) 1989-07-28 1989-07-28 Pressure reducing device in cold isostatic press forming apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP19422689A JPH0360897A (en) 1989-07-28 1989-07-28 Pressure reducing device in cold isostatic press forming apparatus

Publications (2)

Publication Number Publication Date
JPH0360897A JPH0360897A (en) 1991-03-15
JPH0367798B2 true JPH0367798B2 (en) 1991-10-24

Family

ID=16321058

Family Applications (1)

Application Number Title Priority Date Filing Date
JP19422689A Granted JPH0360897A (en) 1989-07-28 1989-07-28 Pressure reducing device in cold isostatic press forming apparatus

Country Status (1)

Country Link
JP (1) JPH0360897A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5203517B1 (en) * 2012-02-23 2013-06-05 日機装株式会社 Isotropic pressurizer and isotropic pressurization method
CN111014663B (en) * 2019-12-11 2022-05-13 江西开源自动化设备有限公司 Powder forming press and protection demoulding hydraulic control system thereof

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5918159A (en) * 1982-07-20 1984-01-30 三菱鉱業セメント株式会社 Dielectric ceramic composition
JPS60220203A (en) * 1984-04-12 1985-11-02 Mitsubishi Heavy Ind Ltd Pressure boosting type high pressure vessel

Also Published As

Publication number Publication date
JPH0360897A (en) 1991-03-15

Similar Documents

Publication Publication Date Title
CA2233275A1 (en) Frozen carbonated beverage making device
KR102338693B1 (en) Method for the high-pressure treatment of a product
JPS5933480B2 (en) Press with hydraulic overload safety device and ram weight balance device
US5419170A (en) Gas control for superplastic forming
JPH01283401A (en) Electro-hydraulic type servo system
CA2179047A1 (en) Method and system for controlling a pressurized fluid and valve assembly for use therein
JP2002544579A (en) Fluid pressure regulator with differential pressure setting control
US5219409A (en) Vacuum die casting process
JPH0367798B2 (en)
US20160309771A1 (en) Pneumatic-Driven Double-Compression Popping Apparatus
CN212577461U (en) Continuous control injection system and die casting machine comprising same
JPH084236Y2 (en) Pressure reducing device for cold isostatic pressing
JP3555095B2 (en) Pneumatic control device for press machine
SE8704196D0 (en) CONTROL PART OF CONTROL SYSTEM FOR REGULATING A ROTATE COMPRESSOR'S INTERNAL VOLUME CONDITION
DE19736703A1 (en) Throttle-valve control system e.g. for suction conveyor
JPS60242028A (en) Injection compression molding method
JPH0812855B2 (en) Etching device pressure control method and device
JP2001315177A (en) Clamping hydraulic apparatus for injection holding machine
JPS59199199A (en) Liquid pressure maintaining device
JPH0452119A (en) Injection molding method and apparatus
JPH057120B2 (en)
JPS5732931A (en) Preheater for metal die in tire vulcanizer
JP2607153B2 (en) Method for foaming thermoplastic resin
US4781208A (en) Device for regulating the concentration of cream in a centrifuge for separating milk
JPH0538600A (en) Pressure control method for silid-state superhigh pressure press

Legal Events

Date Code Title Description
R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

EXPY Cancellation because of completion of term
FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20091024

Year of fee payment: 18