JPS63111015A - Injector for feeding constant volume - Google Patents

Injector for feeding constant volume

Info

Publication number
JPS63111015A
JPS63111015A JP25785086A JP25785086A JPS63111015A JP S63111015 A JPS63111015 A JP S63111015A JP 25785086 A JP25785086 A JP 25785086A JP 25785086 A JP25785086 A JP 25785086A JP S63111015 A JPS63111015 A JP S63111015A
Authority
JP
Japan
Prior art keywords
nozzle hole
needle
needle part
spacer
injection
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.)
Granted
Application number
JP25785086A
Other languages
Japanese (ja)
Other versions
JPH0377048B2 (en
Inventor
Yukinobu Yoshida
吉田 幸信
Akito Shimodaira
下平 暁人
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.)
Toyoda Gosei Co Ltd
Original Assignee
Toyoda Gosei 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 Toyoda Gosei Co Ltd filed Critical Toyoda Gosei Co Ltd
Priority to JP25785086A priority Critical patent/JPS63111015A/en
Publication of JPS63111015A publication Critical patent/JPS63111015A/en
Publication of JPH0377048B2 publication Critical patent/JPH0377048B2/ja
Granted legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29BPREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00Mixing; Kneading
    • B29B7/74Mixing; Kneading using other mixers or combinations of mixers, e.g. of dissimilar mixers ; Plant
    • B29B7/76Mixers with stream-impingement mixing head
    • B29B7/7663Mixers 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
    • B29B7/7684Parts; Accessories

Landscapes

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

Abstract

PURPOSE:To enable the constant supply of raw material to be always achieved at molding by a method in which a needle part is arranged behind a nozzle hole, and the spacer with a specified thickness is displacably fitted between the stopper provided at the root portion of the needle part and the wall of an injection part. CONSTITUTION:A needle part 2 is arranged at the injection part 1a provided with a nozzle hole 5 injecting fluid and a path 4 feeding fluid to said nozzle hole 5. While the needle part 2 is arranged behind the nozzle hole 5 to control the opening area of the nozzle hole 5, the spacer 3 with a specified thickness is disposably fitted between the stopper 2a disposed at the root portion of the needle part 2 and the wall of an injection part 1a. A stock of various pinds of spacers 3 is kept, and a spacer with a specified thickness is suitably selected from said stock, and then is set at aforesaid position. If the distance between tip of the needle part 2 and the nozzle hole 5 is maintained constant, the constant amount of flowing may be always obtained.

Description

【発明の詳細な説明】 発明の目的 (産業上の利用分野) 本発明はウレタン樹脂等の成形時に使用される反応射出
成形装置における原料供給手段等に利用される一定量供
給噴射装置に関するものである。
[Detailed Description of the Invention] Purpose of the Invention (Field of Industrial Application) The present invention relates to a fixed amount supply injection device used as a raw material supply means in a reaction injection molding device used in molding urethane resin, etc. be.

(従来の技術) 従来、一定量の液体や気体を供給する手段の1つとして
、流路にニードルバルブを設けて、流体を規制して一定
量を供給する方法があった。
(Prior Art) Conventionally, as one means for supplying a fixed amount of liquid or gas, there has been a method in which a needle valve is provided in a flow path to regulate the fluid and supply a fixed amount.

ニードルバルブは、先端が円錐状の形状であるニードル
(針弁)を有するバルブであって、ニードルと流路の壁
部との間の隙間を調節することにより、適宜流体の流量
を調節することができる。
A needle valve is a valve that has a needle with a conical tip, and can adjust the flow rate of fluid as appropriate by adjusting the gap between the needle and the wall of the flow path. Can be done.

その際、ニードルと流路の壁部との間の隙間を調節する
ために、ニードルにネジを切りニードルが配置される本
体との間で前後に螺入、螺退するように形成し、ニード
ルバルブの基部に備えられた操作部を回転することによ
り、ニードルの進退の操作をするようにしていた。
At that time, in order to adjust the gap between the needle and the wall of the flow path, the needle is threaded and formed so that it can be screwed back and forth between the main body where the needle is placed and the needle can be screwed back and forth. The needle was moved forward and backward by rotating an operating section provided at the base of the valve.

(発明が解決しようとする問題点) ところが、ニードルバルブの基部に備えられた操作部を
回転することによって流量の調節を行う場合、回転する
という操作は容易に行うことができるが、回転目盛等が
付いていないので、どの程度回転させたかがわからず、
所定の流量を得るために微調節が必要で、そのための作
業が面倒であったり、調節する人によってバラツキが生
ずるという問題点があうた。
(Problem to be Solved by the Invention) However, when adjusting the flow rate by rotating the operation part provided at the base of the needle valve, the rotation operation can be easily performed, but the rotation scale etc. It doesn't come with a mark, so I don't know how much I rotated it.
Fine adjustment was required to obtain a predetermined flow rate, which was troublesome and caused variations depending on the person making the adjustment.

そして、流量のバラツキが生じると、例えば二種類の流
体を混合する場合の混合比の調節が困難になるという問
題点があった。
When the flow rate varies, there is a problem in that it becomes difficult to adjust the mixing ratio when mixing two types of fluids, for example.

発明の構成 (問題点を解決するための手段) 本発明は上記問題点を解決するために、流体を噴出させ
るノズル孔と、該ノズル孔へ流体を供給する通路とが配
設された噴射部に、ニードル部が配置された一定量供給
噴射装置において、前記ニードル部は前記ノズル孔の開
口面積を規制するために前記ノズル孔の後方に配置され
るとともに、前記ニードル部の基部に設けられたストッ
パと前記噴射部の壁部との間に所定厚みを有するスペー
サーが取替え可能に装着されるという構成を採用してい
る。
Structure of the Invention (Means for Solving the Problems) In order to solve the above-mentioned problems, the present invention provides a jetting section that is provided with a nozzle hole for jetting fluid and a passage for supplying fluid to the nozzle hole. In the fixed amount supply injection device in which a needle portion is arranged, the needle portion is arranged behind the nozzle hole in order to regulate the opening area of the nozzle hole, and the needle portion is provided at the base of the needle portion. A structure is adopted in which a spacer having a predetermined thickness is replaceably mounted between the stopper and the wall of the injection section.

(作用・効果) 所定の厚みのスペーサーを各種揃えておき、その中から
一定の厚みのスペーサーを適宜選択し、ニードル部の基
部と噴射部の壁部との間にあらかじめ設置することによ
り、ニードル部の先端とノ女ル孔との間−を一定とし、
−定の流量が常に得られるようにした。
(Function/Effect) By preparing a variety of spacers with a predetermined thickness, selecting an appropriate spacer with a certain thickness from among them, and installing it in advance between the base of the needle part and the wall of the injection part, the needle The distance between the tip of the part and the nostril hole is constant,
- A constant flow rate was always obtained.

従って、従来のように操作部を回転させて所定の流量を
得るための微調節が不要となるとともに、調節する人に
よるバラツキもなく、簡単に一定の流量の供給噴射がで
きるという優れた効果を奏する。
Therefore, there is no need to make fine adjustments to obtain a predetermined flow rate by rotating the operating unit as in the past, and there is no variation depending on the person making the adjustment, making it possible to easily supply and inject a constant flow rate. play.

(実施例) 以下に本発明を具体化した一実施例を第1図〜第3図を
用いて説明する。
(Example) An example embodying the present invention will be described below with reference to FIGS. 1 to 3.

本実施例では一定量供給噴射装置を2つ用いて一方から
ポリイソシアネートを一定量供給し、他方からポリオー
ルを一定量供給して、それらを本体l (射出ヘッド)
で反応させてポリウレタン樹脂を成形する反応射出成形
装置に用いたものについて説明する。
In this example, two constant-amount supply injection devices are used to supply a constant amount of polyisocyanate from one side and a constant amount of polyol from the other, and then feed them into the main body l (injection head).
The apparatus used in the reaction injection molding apparatus for molding polyurethane resin through reaction will be explained below.

まず、lは第1図(第3図のA−A断面図)に示すよう
に一定量供給噴射装置が組込まれた本体であって、後で
詳述するように、流体を噴出するノズル孔5と同ノズル
孔5に流体を供給する通路4とが配設された噴射部1a
とノズル孔5から噴出された流体を反応槽9へ供給する
シリンダ6と、流体を反応槽9へ供給しない場合に流体
を循環する循環溝8とを備えている。2はノズル孔5の
開口面積を決定するためのニードル部であって、前記噴
射部1aのノズル孔5の後方に配設されている。そして
同ニードル部2の基部にはストッパ2、aが形成され、
同ストッパ2aは図示しないバネによって前方(シリン
ダ6側)へ付勢されている。
First, as shown in Fig. 1 (A-A sectional view in Fig. 3), l is a main body in which a fixed amount supply injection device is incorporated, and as will be described in detail later, a nozzle hole for ejecting fluid is provided. 5 and a passage 4 for supplying fluid to the nozzle hole 5.
A cylinder 6 that supplies the fluid ejected from the nozzle hole 5 to the reaction tank 9, and a circulation groove 8 that circulates the fluid when the fluid is not supplied to the reaction tank 9. Reference numeral 2 denotes a needle portion for determining the opening area of the nozzle hole 5, and is disposed behind the nozzle hole 5 of the injection portion 1a. A stopper 2,a is formed at the base of the needle portion 2,
The stopper 2a is biased forward (towards the cylinder 6) by a spring (not shown).

同ストッパ2aは通常原料となる流体の圧力によって前
方へ押圧されているので、上記バネがなくてもストッパ
2aは前方(シリンダ6側)へ付勢されている。
Since the stopper 2a is normally pressed forward by the pressure of the fluid used as the raw material, the stopper 2a is urged forward (towards the cylinder 6) even without the spring.

3は上記ストッパ2aと噴射部1aの壁部との間に取替
可能に装着された金属製のスペーサーであって、その厚
さはポリイソシアネート及びポ、リオールのいずれの一
定量供給噴射装置の場合も3.0 no++である。
Reference numeral 3 denotes a metal spacer replaceably installed between the stopper 2a and the wall of the injection section 1a, and its thickness is determined by the injection device for supplying a fixed amount of polyisocyanate, polyol, and lyol. The case is also 3.0 no++.

4は第3図に示すように各ニードル部2の外周位置に3
本設けられたポリイソシアネート又はポリオールの通路
、5はニードル部2の先端部に位置し、3本の通路4が
合併するノズル孔であって、3本の通路4からの流体が
ニードル部2によって規制され、一定流量の流体がノズ
ル孔5の先端から噴射される。
4 is located at the outer circumferential position of each needle portion 2 as shown in FIG.
The provided polyisocyanate or polyol passage 5 is located at the tip of the needle part 2 and is a nozzle hole where three passages 4 are merged, and the fluid from the three passages 4 is passed through the needle part 2. A regulated, constant flow rate of fluid is injected from the tip of the nozzle hole 5.

6は円筒形のシリンダであって、2つの一定量供給噴射
装置から噴射されるポリイソシアネートとポリオールと
が衝突混合し、そこでウレタン反応を起こしながら、シ
リンダ6から射出される。
Reference numeral 6 denotes a cylindrical cylinder, in which polyisocyanate and polyol injected from two constant-amount supply injection devices collide and mix, causing a urethane reaction therein, and is injected from the cylinder 6.

7は上下に移動するピストンであって、凹部7a及び油
圧等の駆動装置より動力を伝達する駆動軸7bを有し、
上下に移動することによってポリイソシアネートとポリ
オールをノズル孔5からシリンダ6内へ噴出したり又は
噴出を止めたりする機能を有している。
7 is a piston that moves up and down, and has a recess 7a and a drive shaft 7b that transmits power from a drive device such as hydraulic pressure,
It has the function of ejecting polyisocyanate and polyol from the nozzle hole 5 into the cylinder 6 or stopping the ejection by moving up and down.

なお、ポリイソシアネートとポリオールをノズル孔5か
らシリンダ6へ噴出するのを止める場合は、図示しない
駆動装置によって駆動軸7bを下方へ移動させることに
よってそれに連結されたピストン7が下方へ移動され第
2図(第3図のA−A断面図)に示すような状態となる
In addition, when stopping the ejection of polyisocyanate and polyol from the nozzle hole 5 to the cylinder 6, the piston 7 connected thereto is moved downward by moving the drive shaft 7b downward by a drive device (not shown). The state is as shown in the figure (A-A sectional view in FIG. 3).

従って、ノズル孔5から噴出したポリイソシアネートと
ポリオールは、ピストン7の凹部7aを経て循環溝8を
通り図示しない原料槽へ戻って循環する。
Therefore, the polyisocyanate and polyol ejected from the nozzle hole 5 pass through the recess 7a of the piston 7, pass through the circulation groove 8, and return to the raw material tank (not shown) for circulation.

9は反応槽であって、シリンダ6から射出されるポリイ
ソシアネートとポリオールとがウレタン反応を起こしな
がら収容され、これらが反応を完了してポリウレタン樹
脂の成形品が形成される。
Reference numeral 9 denotes a reaction tank in which the polyisocyanate and polyol injected from the cylinder 6 are accommodated while undergoing a urethane reaction, and when the reaction is completed, a molded product of polyurethane resin is formed.

次に上記実施例の作用について説明する。Next, the operation of the above embodiment will be explained.

図示しない駆動装置を作動して、シリンダ6内のピスト
ン7を上昇させ、反応原料である加圧されたポリイソシ
アネートとポリオールとが通路4からノズル孔5を経て
、シリンダ6内に噴出される。この時、その噴出量はニ
ードル部2の前後位置即ちノズル孔5に対するニードル
部2の位置によって決定されるが、それは噴射部1aの
壁部とストッパ2aとの間に装着されたスペーサー3の
厚さによって決定される0本実施例においては、ポリイ
ソシアネートとポリオールの粘度が同等で反応モル比も
等しいので、スペーサー3の厚さは3、(1++n+に
設定されている。
A drive device (not shown) is operated to raise the piston 7 in the cylinder 6, and pressurized polyisocyanate and polyol, which are reaction raw materials, are injected into the cylinder 6 from the passage 4 through the nozzle hole 5. At this time, the amount of ejection is determined by the longitudinal position of the needle part 2, that is, the position of the needle part 2 with respect to the nozzle hole 5, but it is determined by the thickness of the spacer 3 installed between the wall of the injection part 1a and the stopper 2a. In this example, the viscosity of the polyisocyanate and the polyol are the same and the reaction molar ratios are also the same, so the thickness of the spacer 3 is set to 3, (1++n+).

上記スペーサー3の厚さは、3.0a+mとしたが、反
応速度等を考慮して2.6〜3.4taraまで選択す
ることができる。
Although the thickness of the spacer 3 was set to 3.0 a+m, it can be selected from 2.6 to 3.4 tara in consideration of the reaction rate and the like.

このようにして、ポリイソシアネートとポリオールは最
初から一定流量でノズル孔5からシリンダ6内へ噴出さ
れる。そして、シリンダ6内において2つの液体は衝突
混合され反応槽9又は金型のキャビティ(図示せず)へ
射出され、ポリウレタン樹脂の成形品を形成する。
In this way, polyisocyanate and polyol are injected from the nozzle hole 5 into the cylinder 6 at a constant flow rate from the beginning. The two liquids are collided and mixed in the cylinder 6 and injected into a reaction tank 9 or a mold cavity (not shown) to form a polyurethane resin molded product.

従って、所定の厚みのスペーサー3を取り替えることだ
けで、微調節が不要となり、またそれによるバラツキを
生じることがない、さらに、流体として液体、気体を問
わず使用することができる。
Therefore, by simply replacing the spacer 3 of a predetermined thickness, fine adjustment is not required, and variations due to this do not occur.Furthermore, it is possible to use either liquid or gas as the fluid.

本発明は上記実施例以外に次のように構成することもで
きる。
In addition to the embodiments described above, the present invention can also be configured as follows.

(1)スペーサー3の厚さは、上記実施例では2.6〜
3.4a+a+としたが、反応原料、流速、粘度、供給
モル比等の相違によって適宜設定される。
(1) The thickness of the spacer 3 is 2.6 to 2.6 in the above embodiment.
3.4a+a+, but it can be set as appropriate depending on the difference in reaction raw materials, flow rate, viscosity, supply molar ratio, etc.

(2)一定量供給噴射装置に流れる流体は、上記実施例
ではポリイソシアネートとポリオールであったが、これ
らに代えてアルコール、有機酸、エステル、ケトン等の
化学反応原料、その他の液体を用いることもでき、また
ガスのような気体を使用することも可能である。
(2) The fluid flowing into the fixed amount supply injection device was polyisocyanate and polyol in the above example, but instead of these, chemical reaction raw materials such as alcohol, organic acid, ester, ketone, etc., or other liquids may be used. It is also possible to use gases such as gases.

(3)スペーサー3の材質は、上記実施例では金属とし
たが、これに代えて例えばテフロン樹脂、アクリル樹脂
、ポリカーボネート、塩化ビニル樹脂等の合成樹脂を用
いることもできる。
(3) Although the material of the spacer 3 is metal in the above embodiment, it is also possible to use a synthetic resin such as Teflon resin, acrylic resin, polycarbonate, or vinyl chloride resin instead.

(4)本発明の一定量供給噴射装置は、上記実施例では
ポリイソシアネートとポリオールのウレタン反応におけ
る混合のために使用したが、それ以外のエステル化反応
、エポキシ化反応等の化学反応の射出成形機のミキシン
グヘッド等に使用することができる。
(4) Although the fixed amount supply injection device of the present invention was used for mixing polyisocyanate and polyol in the urethane reaction in the above example, injection molding for other chemical reactions such as esterification reaction and epoxidation reaction Can be used for machine mixing heads, etc.

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

第1図は本発明の原料供給時における一定量供給噴射装
置の断面図、第2図は同じく還流時における一定量供給
噴射装置の断面図、第3図は本発明の一定量供給噴射装
置の正面図である。
FIG. 1 is a sectional view of the fixed amount supply injection device according to the present invention during raw material supply, FIG. 2 is a sectional view of the fixed amount supply injection device during recirculation, and FIG. It is a front view.

Claims (1)

【特許請求の範囲】[Claims] 1、流体を噴出させるノズル孔(5)と、該ノズル孔(
5)へ流体を供給する通路(4)とが配設された噴射部
(1a)に、ニードル部(2)が配置された一定量供給
噴射装置において、前記ニードル部(2)は前記ノズル
孔(5)の開口面積を規制するために前記ノズル孔(5
)の後方に配置されるとともに、前記ニードル部(2)
の基部に設けられたストッパ(2a)と前記噴射部(1
a)の壁部との間に所定厚みを有するスペーサー(3)
が取替え可能に装着されていることを特徴とする一定量
供給噴射装置。
1. A nozzle hole (5) for ejecting fluid;
5), in which a needle part (2) is disposed in an injection part (1a) in which a passage (4) for supplying fluid is arranged, the needle part (2) is connected to the nozzle hole; (5) to regulate the opening area of the nozzle hole (5).
), and the needle part (2)
The stopper (2a) provided at the base of the injection part (1)
a) Spacer (3) having a predetermined thickness between it and the wall part
A fixed amount supply injection device characterized in that a is replaceably installed.
JP25785086A 1986-10-29 1986-10-29 Injector for feeding constant volume Granted JPS63111015A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP25785086A JPS63111015A (en) 1986-10-29 1986-10-29 Injector for feeding constant volume

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP25785086A JPS63111015A (en) 1986-10-29 1986-10-29 Injector for feeding constant volume

Publications (2)

Publication Number Publication Date
JPS63111015A true JPS63111015A (en) 1988-05-16
JPH0377048B2 JPH0377048B2 (en) 1991-12-09

Family

ID=17312022

Family Applications (1)

Application Number Title Priority Date Filing Date
JP25785086A Granted JPS63111015A (en) 1986-10-29 1986-10-29 Injector for feeding constant volume

Country Status (1)

Country Link
JP (1) JPS63111015A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5127058A (en) * 1989-01-06 1992-06-30 Mitsubishi Denki Kabushiki Kaisha Gain controller
CN103862713A (en) * 2014-02-28 2014-06-18 杭州东博自动化科技有限公司 Plate type material filling device
CN104228127A (en) * 2014-09-01 2014-12-24 杭州东博自动化科技有限公司 Novel material injection device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5127058A (en) * 1989-01-06 1992-06-30 Mitsubishi Denki Kabushiki Kaisha Gain controller
CN103862713A (en) * 2014-02-28 2014-06-18 杭州东博自动化科技有限公司 Plate type material filling device
CN104228127A (en) * 2014-09-01 2014-12-24 杭州东博自动化科技有限公司 Novel material injection device

Also Published As

Publication number Publication date
JPH0377048B2 (en) 1991-12-09

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