JPS582068B2 - Remotely controlled injector for mixing head of chemical components feeding into mold - Google Patents

Remotely controlled injector for mixing head of chemical components feeding into mold

Info

Publication number
JPS582068B2
JPS582068B2 JP57002378A JP237882A JPS582068B2 JP S582068 B2 JPS582068 B2 JP S582068B2 JP 57002378 A JP57002378 A JP 57002378A JP 237882 A JP237882 A JP 237882A JP S582068 B2 JPS582068 B2 JP S582068B2
Authority
JP
Japan
Prior art keywords
injector
control
chamber
cavity
piston
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
Application number
JP57002378A
Other languages
Japanese (ja)
Other versions
JPS57138929A (en
Inventor
カルロ・フイオレンチ−ニ
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.)
AFUROSU SpA
Original Assignee
AFUROSU SpA
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 AFUROSU SpA filed Critical AFUROSU SpA
Publication of JPS57138929A publication Critical patent/JPS57138929A/en
Publication of JPS582068B2 publication Critical patent/JPS582068B2/en
Priority to US06/680,297 priority Critical patent/US4665040A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00—Mixing; Kneading
    • B29B7/74—Mixing; Kneading using other mixers or combinations of mixers, e.g. of dissimilar mixers ; Plant
    • B29B7/76—Mixers with stream-impingement mixing head
    • B29B7/7663—Mixers with stream-impingement mixing head the mixing head having an outlet tube with a reciprocating plunger, e.g. with the jets impinging in the tube
    • B29B7/7684—Parts; Accessories
    • B29B7/7689—Plunger constructions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00—Mixing; Kneading
    • B29B7/74—Mixing; Kneading using other mixers or combinations of mixers, e.g. of dissimilar mixers ; Plant
    • B29B7/7471—Mixers in which the mixing takes place at the inlet of a mould, e.g. mixing chambers situated in the mould opening
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00—Mixing; Kneading
    • B29B7/74—Mixing; Kneading using other mixers or combinations of mixers, e.g. of dissimilar mixers ; Plant
    • B29B7/76—Mixers with stream-impingement mixing head
    • B29B7/7631—Parts; Accessories
    • B29B7/7636—Construction of the feed orifices, bores, ports
    • B29B7/7642—Adjustable feed orifices, e.g. for controlling the rate of feeding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00—Mixing; Kneading
    • B29B7/30—Mixing; Kneading continuous, with mechanical mixing or kneading devices
    • B29B7/58—Component parts, details or accessories; Auxiliary operations
    • B29B7/72—Measuring, controlling or regulating

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Molding Of Porous Articles (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Nozzles (AREA)

Description

【発明の詳細な説明】 発明の要約 混合ヘッド１の混合室２中に高圧下で供給された反応性
化学成分を注入して混合物を金型１ａ中に分注する遠隔
操縦インゼクタにつき開示し、インゼクタ７，８は滑動
制御ピストン２１に接続されたニードル弁を備え、制御
ピストンの一端部には注入すべき化学成分のスラストを
かけると共に、他端部には一定圧力で供給される制御流
体のスラストをかける。DETAILED DESCRIPTION OF THE INVENTION Summary of the Invention A remotely controlled injector is disclosed for injecting reactive chemical components supplied under high pressure into the mixing chamber 2 of a mixing head 1 and dispensing the mixture into a mold 1a; The injectors 7, 8 are equipped with needle valves connected to a sliding control piston 21, with one end of the control piston applying a thrust of the chemical component to be injected, and the other end of the control piston applying a thrust of the control fluid supplied at a constant pressure. Apply thrust.

本発明は、金型中に供給される反応性化学成分、特に反
応性ポリウレタン物質の混合ヘッド用遠隔操縦インゼク
タに関するものである。The present invention relates to a remotely controlled injector for a mixing head of reactive chemical components, particularly reactive polyurethane materials, which are fed into molds.

周知のように、問題の混合ヘッドは開放しているかまた
は金型と連通している混合室からなり、この混合室中に
化学成分を加圧下かつ高速度にて供給し、微細な個々に
分離しだ噴霧物質の小ジェットを形成させ、これらは小
さい空間中で衝突して金型中に供給される前に充分混合
される。As is well known, the mixing head in question consists of a mixing chamber, either open or in communication with a mold, into which the chemical components are fed under pressure and at high speed and separated into fine individual particles. Small jets of atomized material are formed which impinge in a small space and are thoroughly mixed before being fed into the mold.

混合室中への成分の注入は通常注入弁（以下、簡単にイ
ンゼクタと云う）によって行なわれ、この弁においては
ニードル弁を通常スプリングによって注入ノズルの方向
に備倚させ、このノズルは混合室中に開口する。Injection of the components into the mixing chamber is usually carried out by an injection valve (hereinafter simply referred to as an injector), in which a needle valve is usually mounted by a spring in the direction of an injection nozzle, and this nozzle is inserted into the mixing chamber. Open to.

偏倚スプリングによりもたらされる力はその圧縮力を変
化させて適当に調整し、ニードル弁にかかる化学成分の
スラストを均衡させると共に、所望の注入圧力値を得る
ことができる。The force provided by the biasing spring can be adjusted appropriately by varying its compression force to balance the thrust of the chemical component on the needle valve and to obtain the desired injection pressure value.

上記した型式のインゼクタを用いる場合、成分の混合に
おいて一定の化学量論的比率を確保するには、たとえば
ノズルの部分的閉塞によりインゼクタの下流の条件が変
化することがあるので、混合室中への単一成分の注入を
常にて定圧力で行なうようにするという問題が生ずる。When using an injector of the type described above, in order to ensure a constant stoichiometric ratio in the mixing of the components, it is necessary to The problem arises of ensuring that the injection of a single component always takes place at a constant pressure.

公知型式の弁の均衡スプリングを使用しても、まだこの
問題を充分に解決することができず、また遠隔操作によ
り調整することができない。The use of balancing springs in known types of valves still does not satisfactorily solve this problem and cannot be adjusted by remote control.

事実、公知の弁においては偏倚スプリングに直接作用さ
せることが必要であり、さらにスプリングは完全に一定
の圧力−均衡力を与えることができない。In fact, in known valves it is necessary to act directly on the biasing spring, and furthermore the spring is not able to provide a completely constant pressure-balancing force.

反面、化学成分の所望の供給圧力を達成して、混合室中
に注入される化学成分の充分な噴霧を確保するには、イ
ンゼクタの正確な設定を行ないかつこれを維持すること
が極めて重要である。On the other hand, it is extremely important to make and maintain accurate settings of the injector in order to achieve the desired feed pressure of the chemical components and ensure sufficient atomization of the chemical components injected into the mixing chamber. be.

実際上、混合室中への単一成分の注入条件を常に一定か
つ不変に保つことにより、混合物の品質が改善されした
がって製品もしくは成型物品における欠点を回避しうる
ことが見出された。In practice, it has been found that by keeping the injection conditions of the single components into the mixing chamber always constant and unchanged, the quality of the mixture can be improved and defects in the product or molded article can thus be avoided.

本発明の目的は、上記問題を克服することができ、すな
わち注入弁の遠隔操作設定を一定圧力値で行なうことが
できる上記した型式の反応性化学成分の混合ヘッド用イ
ンゼクタを提供することである。The object of the invention is to provide an injector for a mixing head of reactive chemical components of the type described above, with which the above-mentioned problems can be overcome, i.e. the injection valve can be set remotely at a constant pressure value. .

さらに本発明の目的は、たとえば化学成分の混合または
循環過程の際事故などによるインゼクタ下流の操作条件
における如何なる変化にも無関係に、所定の注入圧力値
に自動調整しうる上記したようなインゼクタを提供する
ことである。A further object of the invention is to provide an injector as described above, which is capable of automatically adjusting to a predetermined injection pressure value, irrespective of any changes in the operating conditions downstream of the injector, for example due to accidents during the mixing or circulation process of chemical components. It is to be.

さらに本発明の目的は、遠隔操縦により操作して化学成
分の循環方式を種々の圧力値で行ないうる上記したよう
な混合ヘッド用インゼクタを提供することである。A further object of the invention is to provide an injector for a mixing head as described above, which can be operated by remote control to effect circulation of chemical components at different pressure values.

本発明によれば、金型中に供給する化学成分の混合ヘッ
ドに用いる遠隔操縦インゼクタが提供され、このインゼ
クタにおいて混合ヘッドは混合室からなりその側壁の１
部に成分注入用の入口開孔部を備え、前記インゼクタは
一端部にノズルを設けた円筒状キャビテイを有する本体
からなり、前記キャビテイは前記ノズルを介して混合室
中の注大開孔部と連通すると共に、１成分用の供給ダク
トにも連通し、インゼクタのキャビテイ中にはニードル
弁を閉鎖位置から均衡開放位置まで軸線方向移動自在に
設け、前記ニードル弁を前記キャビテイ内で軸線方向に
移動する制御ピストンの端部に支持し、供給されつつあ
る化学成分のスラストを制御ピストンの一方の側にかけ
ると共に、一定圧力値を有する制御流体の対抗スラスト
を他方の側にかけることを特徴とする。According to the present invention, there is provided a remotely controlled injector for use in a mixing head for feeding chemical components into a mold, in which the mixing head comprises a mixing chamber and one side wall of the injector comprises a mixing chamber.
The injector comprises a body having a cylindrical cavity with a nozzle at one end, and the cavity communicates with a large injection hole in the mixing chamber through the nozzle. and a needle valve is provided in the cavity of the injector so as to be axially movable from a closed position to a balanced open position, the needle valve being axially movable within the cavity. It is supported at the end of the control piston and is characterized in that a thrust of the chemical component being supplied is applied to one side of the control piston and a counter-thrust of control fluid having a constant pressure value is applied to the other side.

以下、添付図面を参照して、本発明のインゼクタにつき
一層詳細に説明する。Hereinafter, the injector of the present invention will be explained in more detail with reference to the accompanying drawings.

第１図は、反応性化学成分を混合しかつ混合物を金型１
Ａに供給するための一般的ヘッド１を示している。Figure 1 shows mixing the reactive chemical components and depositing the mixture into mold 1.
1 shows a typical head 1 for feeding A;

このヘッドは、周知のように混合室２からなり、任意所
望の形状とすることができ、混合物を金型１Ａの方向に
向ける出口開孔部３と、室２内において軸線方向に滑動
するプラグの形態の清浄用部材４とを備える。This head consists, as is known, of a mixing chamber 2, which can be of any desired shape, and an outlet opening 3 which directs the mixture in the direction of the mold 1A, and a plug which slides axially within the chamber 2. A cleaning member 4 in the form of .

この部材４は、シリンダ５またはその他の制御機構によ
り、混合物の出口開孔部３を閉鎖すると同時に単一化学
成分が混合室２中に入るのを防止する前進位置から、混
合物の出口開孔部と成分の注入開孔部とを開放する後退
位置まで制御される。This member 4 is moved from an advanced position by means of a cylinder 5 or other control mechanism to close the mixture outlet opening 3 and at the same time prevent single chemical components from entering the mixing chamber 2. and a retracted position that opens the component injection aperture.

これら開孔部は、単一化学成分のインゼクタ７および８
に対応して室２の側壁の１部に設けられる。These apertures are injectors 7 and 8 of a single chemical component.
It is provided on a part of the side wall of the chamber 2 in correspondence with the above.

各インゼクタ７および８は、第２図に示しかつ後記する
ように、配管９および１０により、たとえばタンク１２
に接続された制御部からなり、インゼクタ７および８の
各制御部には制御流体を一定圧力値で供給することがで
きる。Each injector 7 and 8 is connected to, for example, a tank 12 by piping 9 and 10, as shown in FIG. 2 and described below.
The injectors 7 and 8 each have a control section connected to the injectors 7 and 8, and each control section of the injectors 7 and 8 can be supplied with control fluid at a constant pressure value.

第１図における参照符号１３は一般的な制御流体圧調整
装置を示している。Reference numeral 13 in FIG. 1 indicates a general control fluid pressure regulating device.

第２図はインゼクタの１つ、たとえば第１図のインゼク
タの拡大縦断面図を示している。FIG. 2 shows an enlarged longitudinal section of one of the injectors, for example the injector of FIG.

第２図から判るように、インゼクタはたとえば混合ヘッ
ドの本体１における適当なハウジングに螺入された本体
１４からなり、その一端部に円筒状キャビテイ１５を画
成すると共に、前記混合室の壁部１７における開孔を介
して化学成分を混合室中に注入するためのテーパ付きノ
ズル１６を設ける。As can be seen in FIG. 2, the injector consists of a body 14 screwed into a suitable housing, for example in the body 1 of the mixing head, defining a cylindrical cavity 15 at one end and a wall of said mixing chamber. A tapered nozzle 16 is provided for injecting the chemical components into the mixing chamber through the aperture at 17 .

第２図における参照符号１８は環状または類似した形状
の室を示し、その一方の側を成分供給ダクト１９に接続
すると共に、他方の側は半径方向通路２０を介してイン
ゼクタの内部キャビテイ１５およびノズル１６に接続す
る。Reference numeral 18 in FIG. 2 designates a chamber of annular or similar shape, connected on one side to the component supply duct 19 and on the other side via a radial passage 20 to the internal cavity 15 of the injector and the nozzle. Connect to 16.

インゼクタ内の円筒状キャビテイ１５は、成分用の半径
方向供給路２０から出発して所定長さの部分１５ａにわ
たり後方に延在し、この部材１５ａ内にニードル弁用の
支持ピストン２１を滑動させる。A cylindrical cavity 15 in the injector starts from a radial feed channel 20 for the component and extends rearwardly over a length 15a into which a support piston 21 for the needle valve slides.

この弁は円錐状部分２２と、注入ノズル１６の最小直径
に対応した直径を有する終端の円筒状末端部分２３とか
ら構成される。This valve consists of a conical part 22 and a terminating cylindrical end part 23 with a diameter corresponding to the smallest diameter of the injection nozzle 16.

ニードル弁２２，２３とピストン２１とのアセンブリは
軸線方向に芯出しされ、ニードル弁２２，２３がノズル
１６を閉鎖して成分が混合室中に供給されるのを防止す
る前進位置から、ニードル弁が注入ノズルを開放する後
退位置まで移動可能であり、注入ノズルと共に環状通路
を画成しその断面積は前記混合室中へ成分を供給および
注入するための圧力値を決定する。The needle valve 22, 23 and piston 21 assembly is axially centered such that the needle valve 22, 23 closes the nozzle 16 and prevents components from being delivered into the mixing chamber from an advanced position. is movable to a retracted position in which it opens an injection nozzle, which together with the injection nozzle defines an annular passage whose cross-sectional area determines the pressure value for supplying and injecting the components into said mixing chamber.

ニードル弁ピストン２１が滑動する軸線方向キャビテイ
１５ａは注入ノズル１６とは反対側で終端し、図示する
ようにここに制御流体室２４を備える。The axial cavity 15a in which the needle valve piston 21 slides ends opposite the injection nozzle 16 and comprises a control fluid chamber 24 there as shown.

制御流体の室２４はピストン２１よりも僅か大きい直径
を有して環状ショルダー２５を形成し、そこにより大き
な直径の後部２６、すなわちピストンヘッドを当接させ
、このヘッド２６に制御流体の圧力をかける。The control fluid chamber 24 has a slightly larger diameter than the piston 21 and forms an annular shoulder 25 against which rests a larger diameter rear part 26, i.e. the piston head, on which pressure of the control fluid is applied. .

制御流体室２４は比較的大きな長さ、たとえば制御ピス
トン行程の３〜５倍に等しい長さを有するが、ピストン
２１の行程はワツシャ２７によりまたは室２４内の他の
停止部材により背後で制限される。The control fluid chamber 24 has a relatively large length, for example a length equal to 3 to 5 times the control piston stroke, but the stroke of the piston 21 is limited behind by a washer 27 or by other stop members in the chamber 24. Ru.

室２４の寸法、特に の最大直径は、制御流体により一
定圧力でかけられるスラストが、インゼクタを介して供
給される化学成分によりピストン２１の他端部にかけら
れる対抗スラストに正確に均衡して成分の正確な注入圧
力を与えるような大きさである。The dimensions of the chamber 24, in particular its maximum diameter, are such that the thrust exerted at constant pressure by the control fluid is precisely balanced by the counter-thrust exerted on the other end of the piston 21 by the chemical component supplied via the injector, so that the The size is such that it provides a suitable injection pressure.

制御流体室２４はその後端部が、たとえば半径方向通路
２８と環状路２９とによりダクト３０に接続され、この
ダクトには加圧流体の供給管９を接続する。The control fluid chamber 24 is connected at its rear end, for example by a radial channel 28 and an annular channel 29, to a duct 30, to which a supply line 9 for pressurized fluid is connected.

本発明の遠隔操縦インゼクタは次のようにして操作され
る。The remotely controlled injector of the present invention is operated as follows.

ポンプ１１はノズル７と８との両者に対し同時に一定圧
力値の制御流体源を構成し、したがって混合ヘッド１に
直接影響を及ぼすことなく遠隔操縦により操作または調
整することができる。Pump 11 constitutes a source of control fluid of constant pressure value for both nozzles 7 and 8 at the same time and can therefore be operated or regulated by remote control without directly influencing mixing head 1.

その結果、各制御ピストン２１のヘッド２４は注入ノズ
ルに指向する圧力を受け、この圧力は対向端部に対抗圧
力が存在しないと、すなわち混合すべき化学成分の供給
が途絶したときはいつでも或いは化学成分をかなり低い
圧力値で別途に循環させる場合はいつでも、ピストン２
１とニードル弁２２、２３とのアセンブリをノズル１６
に対しこのノズルを閉鎖する第２図に示した位置まで前
進させる。As a result, the head 24 of each control piston 21 is subjected to a pressure directed towards the injection nozzle, which pressure is maintained in the absence of a counterpressure at the opposite end, i.e. whenever the supply of the chemical components to be mixed is interrupted or Whenever components are circulated separately at fairly low pressure values, piston 2
1 and needle valves 22 and 23 into the nozzle 16
The nozzle is then advanced to the position shown in FIG. 2 where it is closed.

成分がインゼクタに供給されると直ちに、すなわち上記
化学成分によりもたらされる対抗圧力がニードル弁のピ
ストン２１の端部にかけられると直ちに、この圧力は制
御流体とは反対のピストン２１側にスラストを及ぼし、
その結果ピストン２１はニードル弁と共に押し戻されて
ノズル１６が開放する安定な均衡位置に静止し、成分を
混合室２中に所望圧力値で注入させる。As soon as the component is fed into the injector, i.e. as soon as the counterpressure provided by said chemical component is applied to the end of the piston 21 of the needle valve, this pressure exerts a thrust on the side of the piston 21 opposite the control fluid;
As a result, the piston 21 together with the needle valve is pushed back and rests in a stable equilibrium position in which the nozzle 16 opens and the components are injected into the mixing chamber 2 at the desired pressure value.

操作中、事故などによりたとえば不純物によるノズル１
６の部分的閉塞のため化学成分の供給圧力が変化すると
、この結果制御シリンダに対する化学成分圧力の変化が
生じて、この成分供給圧力を所望供給値にするような異
なる均衡位置を自動的に占める。During operation, nozzle 1 may be damaged due to an accident, for example, due to impurities.
When the supply pressure of a chemical component changes due to partial blockage of 6, this results in a change in the chemical component pressure to the control cylinder and automatically assumes a different equilibrium position which brings this component supply pressure to the desired supply value. .

この自動調整は、ピストンのヘッド２５にかかる制御流
体圧力がほぼ不変に留まるという事実によって生ずる。This automatic adjustment results from the fact that the control fluid pressure on the head 25 of the piston remains approximately constant.

上記の説明および添付図面から明白なように、本発明は
遠隔操縦による各インゼクタの操作を可能にし、各イン
ゼクタを所望圧力値に調整し、さらに成分供給圧力の変
動をもたらすような原因とは無関係にインゼクタの自動
調整能力を発揮する。As is evident from the above description and the accompanying drawings, the present invention enables the operation of each injector by remote control, adjusting each injector to a desired pressure value, and independent of sources that may lead to fluctuations in the component supply pressure. The automatic adjustment ability of the injector is demonstrated.

添付図面においては単一の制御流体圧調整装置１３を両
インゼクタについて使用した場合を例示したが、所望な
らば個々に調整装置を使用しうることが明白であり、ま
たノズル１６が混合室のプラグ４により閉鎖された場合
は制御流体の供給を中断して成分の循環を低圧力でまた
は注入圧力より相当低い圧力で行ない、化学成分を同じ
インゼクタを介して循環することも可能である。Although the accompanying drawings illustrate the use of a single control fluid pressure regulator 13 for both injectors, it is clear that individual regulators may be used if desired, and that the nozzle 16 is connected to the mixing chamber plug. When closed by 4, it is also possible to interrupt the supply of control fluid and allow the circulation of the components to take place at a lower pressure or at a pressure considerably lower than the injection pressure, and to circulate the chemical components through the same injector.

したがって、上記に説明しかつ添付図面に示した例は、
金型中に供給される反応性化学成分の混合ヘッド１のた
めの遠隔操縦注入ノズルから実質的になり、混合室中へ
の成分の注入圧力を決定するニードル弁がもはや他の公
知型のインゼクタにおけるようにスプリングにより均衡
されるのでなく、混合ヘッドを操作している間ほぼ一定
値に維持しうるすなわち必要に応じ調整または変化させ
うる制御流体の圧力によって均衡させる、という本発明
の思想を単に例示したものに過ぎないことが了解されよ
う。The examples described above and shown in the accompanying drawings therefore:
For the mixing head 1 of the reactive chemical components fed into the mold, the needle valve, which determines the injection pressure of the components into the mixing chamber, is no longer an injector of other known types. The idea of the invention is that instead of being balanced by a spring as in , it is simply balanced by the pressure of a control fluid that can be maintained at a nearly constant value during operation of the mixing head, i.e. can be adjusted or varied as required. It will be understood that these are merely examples.

かくして、反応性化学成分における正確な程度の噴霧を
確保することができ、如何なる使用条件下でもより良好
な混合制御とより良好な混合物品質とを達成することが
できる。Thus, a precise degree of atomization in the reactive chemical components can be ensured, and better mixing control and better mixture quality can be achieved under any conditions of use.

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

第１図は本発明による化学成分注入用の２個の弁を備え
た一般的混合ヘッドの略図、第２図は第１図の混合ヘッ
ドにおける注入弁の拡大縦断面図である。 １・・・混合ヘッド、２・・・混合室、３・・・開孔部
、４・・・清浄用部材、５・・・シリンダ、７，８・・
・インゼクタ、９，１０・・・配管、１１・・・ポンプ
、１２・・・タンク、１３・・・制御流体圧調整装置、
１４・・・インゼクタ本体、１５・・・キャビテイ、１
６・・・ノズル、１７・・・壁部、１８・・・環状室、
１９・・・成分供給ダクト、２０・・・半径方向通路、
２１・・・ピストン、２２・・・円錐状部分、２３・・
・円筒状部分、２４・・・制御流体室、２５・・・ショ
ルダ、２６・・・ヘッド、２７・・・ワツシャ、２８・
・・半径方向通路、２９・・・環状路、３０・・・ダク
ト。FIG. 1 is a schematic diagram of a typical mixing head with two valves for chemical component injection according to the invention, and FIG. 2 is an enlarged longitudinal sectional view of the injection valve in the mixing head of FIG. DESCRIPTION OF SYMBOLS 1... Mixing head, 2... Mixing chamber, 3... Opening part, 4... Cleaning member, 5... Cylinder, 7, 8...
- Injector, 9, 10... Piping, 11... Pump, 12... Tank, 13... Control fluid pressure adjustment device,
14... Injector body, 15... Cavity, 1
6... Nozzle, 17... Wall part, 18... Annular chamber,
19... component supply duct, 20... radial passage,
21...Piston, 22...Conical part, 23...
- Cylindrical portion, 24... Control fluid chamber, 25... Shoulder, 26... Head, 27... Washer, 28...
... Radial passage, 29 ... Annular path, 30 ... Duct.

Claims (1)

【特許請求の範囲】 １ 金型中に供給する化学成分の混合ヘッド用遠隔操縦
インゼクタにおいて、混合ヘッドは混合室からなりその
側壁の１部に成分注入用の開孔部を備え、前記インゼク
タは円筒状キャビテイを有する本体からなりその一端部
にノズルを設け、このノズルを混合室の注大開孔部と連
通し、前記キャピテイを１成分用の供給ダクトと流体連
通させ、ニードル弁をインゼクタのキャビテイ内に閉鎖
位置から均衡開放位置まで軸線方向移動自在に設け前記
ニードル弁は制御ピストンの端部において前記キャビテ
イ内で軸線方向に移動自在であり、制御ピストンの一方
の側には供給されつつある化学成分のスラストをかける
と共に、他方の側には一定圧力値を有する制御流体の対
抗スラストをかけるよう構成したことを特徴とする遠隔
操縦インゼクタ。 ２ インゼクタが制御側部を備え、これを圧力調整装置
を介して制御流体源に接続する特許請求の範囲第１項記
載のインゼクタ。 ３ ニードル弁のピストンが内部で滑動するキャビテイ
を、制御ピストンの行程より相対的に大きい長さを有す
る制御流体室中に後方へ延在させる特許請求の範囲第１
項記載のインゼクタ。 ４ 制御流体室が制御ピストンより大きい直径を有し、
前記制御室内においてこの室中の前部環状ショルダ一部
と後部停止部材との間を滑動する後部ヘッドを前記制御
ピストンに設ける特許請求の範囲第１項乃至第３項のい
ずれかに記載のインゼクタ。 ５ 制御室を、この制御室の外部に同軸配置し，た環状
室から導出された半径方向通路を介して流体供給ダクト
に接続する特許請求の範囲第１項乃至第４項のいずれか
に記載のインゼクタ。[Scope of Claims] 1. A remotely controlled injector for a mixing head for supplying chemical components into a mold, the mixing head comprising a mixing chamber and having an opening for injecting the components in a part of its side wall; A body having a cylindrical cavity with a nozzle at one end communicating with the pouring aperture of the mixing chamber, said cavity in fluid communication with a supply duct for one component, and a needle valve connected to the cavity of the injector. The needle valve is axially movable within the cavity at the end of the control piston from a closed position to a balanced open position, and the needle valve is axially movable within the cavity at the end of the control piston, and the needle valve is axially movable within the cavity at the end of the control piston. A remotely controlled injector characterized in that it is configured to apply a thrust of a component and a counter thrust of a control fluid having a constant pressure value on the other side. 2. Injector according to claim 1, wherein the injector comprises a control side, which is connected to a source of control fluid via a pressure regulating device. 3. The cavity in which the piston of the needle valve slides extends rearwardly into a control fluid chamber having a length relatively greater than the stroke of the control piston.
Injector described in section. 4 the control fluid chamber has a larger diameter than the control piston;
An injector according to any one of claims 1 to 3, wherein the control piston has a rear head that slides in the control chamber between a front annular shoulder portion in this chamber and a rear stop member. . 5. The control chamber is arranged coaxially outside the control chamber and connected to the fluid supply duct via a radial passage led out from the annular chamber. injector.
JP57002378A 1981-01-14 1982-01-12 Remotely controlled injector for mixing head of chemical components feeding into mold Expired JPS582068B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US06/680,297 US4665040A (en) 1982-01-12 1984-12-10 Alumina-zirconia ceramic powders and a method of making the same

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT19126A/81 1981-01-14
IT19126/81A IT1135030B (en) 1981-01-14 1981-01-14 REMOTE CONTROLLED INJECTOR FOR MIXING HEADS OF CHEMICAL COMPONENTS TO FEED TO A MOLD

Publications (2)

Publication Number Publication Date
JPS57138929A JPS57138929A (en) 1982-08-27
JPS582068B2 true JPS582068B2 (en) 1983-01-13

Family

ID=11155001

Family Applications (1)

Application Number Title Priority Date Filing Date
JP57002378A Expired JPS582068B2 (en) 1981-01-14 1982-01-12 Remotely controlled injector for mixing head of chemical components feeding into mold

Country Status (5)

Country Link
JP (1) JPS582068B2 (en)
DE (1) DE3200802A1 (en)
FR (1) FR2497687A1 (en)
GB (1) GB2090762A (en)
IT (1) IT1135030B (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1196275B (en) * 1984-10-01 1988-11-16 Afros Spa MOBILE CHAMBER MIXING HEAD
DE3637896A1 (en) * 1986-11-06 1988-06-16 Krauss Maffei Ag Process for mixing and injecting a two-component synthetic resin
DE10020157A1 (en) * 2000-04-25 2001-11-08 Hennecke Gmbh Injection system for production of solid or foamed components from fluid reactive materials has an injection nozzle with bellows moving freely inside a housing in response to hydraulic pressure on a piston
DE102007037780A1 (en) 2007-08-10 2009-02-12 Hennecke Gmbh Konstantdruckdüse
DE102010043329A1 (en) * 2010-11-03 2012-05-03 Bayer Materialscience Aktiengesellschaft Process for the production of foamed moldings
CN104476713B (en) * 2014-12-09 2017-06-06 广西吉顺能源科技有限公司 A kind of polyurethane foaming machine

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2321153A1 (en) * 1973-04-26 1974-11-14 Demag Kunststofftech SPOOL DEVICE FOR THE SHAPING PROCESSING OF PLASTICS FORMING FROM MULTIPLE LIQUID COMPONENTS
DE2346347A1 (en) * 1973-09-14 1975-03-27 Demag Kunststofftech MIXING DEVICE FOR THE SHAPING PROCESSING OF PLASTICS, PREFERABLY MULTIPLE LIQUID COMPONENTS
DE2555156B2 (en) * 1975-12-08 1979-08-02 The Upjohn Co., Kalamazoo, Mich. (V.St.A.) High pressure mixing head
DE2855916C2 (en) * 1978-12-23 1983-12-15 Maschinenfabrik Hennecke Gmbh, 5090 Leverkusen Device for producing a reaction mixture from foam or solid material forming, flowable components
DE2936223A1 (en) * 1979-09-07 1981-03-19 Bayer Ag, 5090 Leverkusen METHOD AND DEVICE FOR PRODUCING A REACTION MIXTURE FROM FLOWABLE, FOAM OR SOLID COMPONENTS
DE3021095C2 (en) * 1980-06-04 1983-12-22 Maschinenfabrik Hennecke Gmbh, 5090 Leverkusen Method and device for producing a solid or foam-forming reaction mixture from at least two flowable reaction components

Also Published As

Publication number Publication date
GB2090762A (en) 1982-07-21
FR2497687A1 (en) 1982-07-16
IT1135030B (en) 1986-08-20
IT8119126A0 (en) 1981-01-14
DE3200802A1 (en) 1982-09-16
JPS57138929A (en) 1982-08-27

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