JPS5810126B2 - Continuous kneading machine - Google Patents

Continuous kneading machine

Info

Publication number
JPS5810126B2
JPS5810126B2 JP54036681A JP3668179A JPS5810126B2 JP S5810126 B2 JPS5810126 B2 JP S5810126B2 JP 54036681 A JP54036681 A JP 54036681A JP 3668179 A JP3668179 A JP 3668179A JP S5810126 B2 JPS5810126 B2 JP S5810126B2
Authority
JP
Japan
Prior art keywords
gear pump
kneading machine
temperature
rotation speed
kneading
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
JP54036681A
Other languages
Japanese (ja)
Other versions
JPS55139824A (en
Inventor
公雄 井上
勝美 小川
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.)
Kobe Steel Ltd
Original Assignee
Kobe Steel 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 Kobe Steel Ltd filed Critical Kobe Steel Ltd
Priority to JP54036681A priority Critical patent/JPS5810126B2/en
Publication of JPS55139824A publication Critical patent/JPS55139824A/en
Publication of JPS5810126B2 publication Critical patent/JPS5810126B2/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
    • B29B7/30—Mixing; Kneading continuous, with mechanical mixing or kneading devices
    • B29B7/58—Component parts, details or accessories; Auxiliary operations
    • B29B7/72—Measuring, controlling or regulating
    • B29B7/726—Measuring properties of mixture, e.g. temperature or density
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/04—Particle-shaped
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/355—Conveyors for extruded articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/365—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using pumps, e.g. piston pumps
    • B29C48/37—Gear pumps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
    • B29C48/911—Cooling
    • B29C48/9135—Cooling of flat articles, e.g. using specially adapted supporting means
    • B29C48/9145—Endless cooling belts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
    • B29C48/919—Thermal treatment of the stream of extruded material, e.g. cooling using a bath, e.g. extruding into an open bath to coagulate or cool the material

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)

Description

【発明の詳細な説明】 本発明は混練度の調整機能を向上せしめた連続式混練機
に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a continuous kneading machine with an improved ability to adjust the degree of kneading.

合成樹脂等の被混線材料を混練機のチャンバー内に連続
的に供給しながら、チャンバー内のミキシングロータに
より溶融混練した後混練機の吐出口より被混練物を吐出
する連続式混練機においては、樹脂の混練度の均一化す
なわち混練後の樹脂の均質化を図り、また、樹脂材料に
応じた適正な混練度を得る等の意味から、各種条件に適
応して混練度を調整し得ることが要求される。In a continuous kneading machine, the material to be kneaded, such as synthetic resin, is continuously fed into the chamber of the kneading machine, melted and kneaded by a mixing rotor in the chamber, and then the material to be kneaded is discharged from the discharge port of the kneading machine. In order to make the kneading degree of the resin uniform, that is, to homogenize the resin after kneading, and to obtain an appropriate kneading degree depending on the resin material, it is possible to adjust the kneading degree to suit various conditions. required.

従来、このような混練度の調整手段としては、混練機の
被混練物の吐出口に開口度調節可能なオリフィスを設け
、該オリフィス開度の調節により吐出抵抗を制御して混
練度を調整する手段を購じた装置、あるいは、上記オリ
フィスの代りにスクリュー押出機を直結し、該押出機の
回転数を制御することにより吐出抵抗を側倒する手段を
講じた装置が知られている。Conventionally, as a means for adjusting the degree of kneading, an orifice whose opening degree can be adjusted is provided at the discharge port of the material to be kneaded in a kneader, and the degree of kneading is adjusted by controlling the discharge resistance by adjusting the degree of opening of the orifice. There are known devices in which a screw extruder is directly connected in place of the orifice and the rotational speed of the extruder is controlled to reduce the discharge resistance.

しかしながら、前者の手段を講じた装置の場合、オリフ
ィスの開度制御だけでは正確な混練度の調整は困難であ
り、また、気泡や蒸発水分を除去すべく混練機を減圧脱
気して運転する場合に、溶融樹脂の粘度が低いときには
オリフィス部で大気圧により樹脂が押戻され、空気が流
入して真空ベントができなくなる等の欠点がある。However, in the case of equipment that uses the former method, it is difficult to accurately adjust the degree of kneading just by controlling the opening of the orifice, and the kneading machine must be operated under reduced pressure to remove air bubbles and evaporated moisture. In this case, when the viscosity of the molten resin is low, the resin is pushed back by the atmospheric pressure at the orifice, causing air to flow in, making vacuum venting impossible.

一方、後者の手段を講じた装置では構造が複雑化及び大
型化して設備費が高くつき、しかも、スクリューの回転
数の制御に対し、樹脂の排出量の増減に時間的なずれが
生じ、応答が遅いため、微妙な調整が困難であると共に
ハンチング等を起こし易い等の欠点があった。On the other hand, equipment that takes the latter method has a complicated and large structure, resulting in high equipment costs.Furthermore, there is a time lag in increasing or decreasing the amount of resin discharged in response to controlling the number of revolutions of the screw, resulting in a response. Since the speed is slow, it is difficult to make delicate adjustments, and hunting is likely to occur.

本発明はこれら従来の欠点を解消し、ギヤポンプを用い
て材料温度を制御することにより、正確に且つ応答性良
く混練度を調整することができると共に、吐出部におけ
る材料の吐出及び空気のシールを確実にして真空ベント
も任意に可能にし、しかも、構造を極力簡略化してコス
トを低廉に保ち得る連続式混練機を提供するものである
。The present invention eliminates these conventional drawbacks, and by controlling the material temperature using a gear pump, it is possible to adjust the kneading degree accurately and with good responsiveness, and also to prevent material discharge and air sealing at the discharge section. To provide a continuous kneading machine that can reliably perform vacuum venting at will, and can keep costs low by simplifying the structure as much as possible.

本発明の特徴とするところは、一端側に被混線材料の供
給口を有し他端側に吐出口を有するチャンバー内に、被
混線材料を連続的に溶融混練するミキシングロータを設
けた連続式混練機本体と、上記供給口から上記チャンバ
ー内に被混線材料を連続定量的に供給するフィーダーと
、上記吐出口に直結したギヤポンプとを装備し、上記ギ
ヤポンプを回転数調節可能なギヤポンプ駆動装置に連結
すると共に、上記吐出口における溶融材料の温度を検出
する温度検出素子払該温度検出素子からの検出信号に応
じて溶融材料の温度が設定値より低くなったときはギヤ
ポンプ回転数を減少させ溶融材料の温度が設定値より高
くなったときはギヤポンプ回転数を増加させるようにギ
ヤポンプ駆動装置を制御する制御回路とを設けたことに
あり、以下、本発明を図示せる実施例によって詳説する
。The present invention is characterized by a continuous type mixing rotor that continuously melts and kneads the material to be mixed in a chamber that has a supply port for the material to be mixed at one end and a discharge port at the other end. Equipped with a kneading machine main body, a feeder that continuously and quantitatively supplies the material to be mixed into the chamber from the supply port, and a gear pump directly connected to the discharge port, the gear pump is converted into a gear pump drive device whose rotation speed is adjustable. At the same time, a temperature detection element detects the temperature of the molten material at the discharge port. When the temperature of the molten material becomes lower than a set value in response to a detection signal from the temperature detection element, the gear pump rotation speed is reduced to melt the material. The present invention is provided with a control circuit that controls the gear pump drive device so as to increase the number of revolutions of the gear pump when the temperature of the material becomes higher than the set value.

第１図において、１は連続式混練機本体で、ミキシング
チャンバー２と、その内部で回転するミキシングロータ
３と、チャンバー２に連通して一端側に設けた被混線材
料の供給口としてのホッパー４と、他端側に設けた吐出
口５とを具備する。In FIG. 1, reference numeral 1 denotes a continuous kneading machine main body, which includes a mixing chamber 2, a mixing rotor 3 rotating inside the mixing chamber 2, and a hopper 4 that communicates with the chamber 2 and is provided at one end as a supply port for the material to be mixed. and a discharge port 5 provided at the other end.

混練機本体１は一般構造を具備するものであるが、図例
では互いに異方向に回転する二軸のロータ３゜３を備え
、該ロータ３は樹脂送給用のスクリュ一部３ａと混練部
を構成する適宜形状の混練翼３ｂとを有する。The kneading machine main body 1 has a general structure, but in the illustrated example, it has two rotors 3°3 that rotate in different directions, and the rotor 3 has a screw part 3a for resin feeding and a kneading part. The kneading blade 3b has an appropriately shaped kneading blade 3b.

そして、フィーダー（図示省略）により連続定量的に供
給される樹脂材料を上記スクリュ一部６により混練部に
送給し、ロータ３の回転によって混練翼３ｂで溶融混練
するものである。Then, the resin material that is continuously and quantitatively supplied by a feeder (not shown) is fed to the kneading section by the screw part 6, and melted and kneaded by the kneading blades 3b by the rotation of the rotor 3.

この場合、回転するロータ３の混練翼３ｂ自体は殆ど材
料を押出す作用を有しないものである。In this case, the kneading blades 3b of the rotating rotor 3 themselves have almost no function of extruding the material.

６は同径の二個の歯車６ａ 、５ｂを組合わせたギヤポ
ンプで、前記混練機本体１の吐出口５に直結し、可変速
のギヤポンプ駆動装置（図示省略）により回転数調節可
能に駆動されるようにしている。A gear pump 6 is a combination of two gears 6a and 5b of the same diameter, and is directly connected to the discharge port 5 of the kneading machine main body 1, and is driven by a variable speed gear pump drive device (not shown) so that its rotational speed can be adjusted. I try to do that.

該ギヤポンプ６は、溶融混練された材料をギヤポンプ６
の回転数に応じた吐出量で押出す作用を為す。The gear pump 6 transfers the melted and kneaded material to the gear pump 6.
It works by extruding at a discharge amount that corresponds to the rotation speed.

こうして、フィーダーにより連続定量的に被混線材料を
混練機本体１に供給すると共に、ギヤポンプ６の回転数
調節にて吐出量を調節可能とすることにより、ギヤポン
プ回転数にチャンバー２内の材料充填率が依存するよう
にしている。In this way, the material to be mixed is continuously and quantitatively supplied to the kneading machine body 1 by the feeder, and the discharge amount can be adjusted by adjusting the rotation speed of the gear pump 6. is made to depend on it.

つまり、ギヤポンプ６の回転数を速くすれば材料の吐出
量が増加することによりチャンバー２内の充填率が低く
なり、逆に回転数を遅くすれば吐出量の減少により充填
率が高められるように構成されている。In other words, if the rotation speed of the gear pump 6 is increased, the amount of material discharged will increase and the filling rate in the chamber 2 will be lowered, and conversely, if the rotation speed is made slower, the filling rate will be increased by decreasing the amount of material discharged. It is configured.

７は温度検出素子で、吐出口５においてギヤポンプ６の
直前部分に設けられ、かゝる部分で溶融材料の温度を検
出する。Reference numeral 7 denotes a temperature detection element, which is provided at a portion immediately before the gear pump 6 at the discharge port 5, and detects the temperature of the molten material at this portion.

そして、その検出信号を受ける制御回路（図示省略）に
より、吐出口５における溶融材料の温度が予め定められ
た設定値より低くなったときはギヤポンプ回転数を減少
させ、溶融材料の温度が設定値より高くなったときはギ
ヤポンプ回転数を増加させるように、ギヤポンプ駆動装
置を制御している。Then, when the temperature of the molten material at the discharge port 5 becomes lower than a predetermined set value, a control circuit (not shown) that receives the detection signal reduces the gear pump rotation speed so that the temperature of the molten material reaches the set value. The gear pump drive device is controlled to increase the gear pump rotational speed when the rotation speed becomes higher.

すなわち、混練機本体１における材料の混練度には、材
料に対するせん断仕事に関係するチャンバー２内の材料
充填率、ロータ３，３の回転数、温度等の条件が影響す
る。That is, the degree of kneading of the material in the kneader main body 1 is influenced by conditions such as the material filling rate in the chamber 2, the number of rotations of the rotors 3, and the temperature, which are related to the shearing work on the material.

特に、吐出口５における溶融材料の温度は、せん断仕事
による発熱に依存し、せん断仕事に応じた混練度調節の
ための重要な制御要素となる。In particular, the temperature of the molten material at the discharge port 5 depends on the heat generated by the shearing work, and is an important control element for adjusting the kneading degree according to the shearing work.

そして、前記ギヤポンプ６の回転数は、チャンバー２内
の材料の充填率、せん断仕事、温度に関係してくる。The rotation speed of the gear pump 6 is related to the filling rate of the material in the chamber 2, shearing work, and temperature.

そこで、ギヤポンプ６及び温度検出素子１並びに制御回
路を用いて溶融材料の温度の制御機構を構成し、これに
よって混練度の調整を可能にしている。Therefore, a control mechanism for controlling the temperature of the molten material is constructed using the gear pump 6, the temperature detection element 1, and the control circuit, thereby making it possible to adjust the degree of kneading.

このような本発明の混練機における混練度の調整作用を
具体的に説明すると、混練機本体１のチャンバー２内に
定量的に連続供給された材料は、前記ロータ３，３によ
り溶融混練された後、前記ギヤポンプ６により、その回
転数に応じた吐出量をもって吐出されるが、その際、溶
融材料の温度を前記温度検出素子７により測定し、混練
度に変化が生じたときにこれに伴う溶融材料の温度変化
を検出する。To explain in detail the effect of adjusting the degree of kneading in the kneading machine of the present invention, the material that is quantitatively and continuously supplied into the chamber 2 of the kneading machine main body 1 is melted and kneaded by the rotors 3, 3. Thereafter, the gear pump 6 discharges the molten material at a discharge amount corresponding to its rotation speed. At this time, the temperature of the molten material is measured by the temperature detection element 7, and when the degree of kneading changes, the temperature of the molten material is measured. Detects temperature changes in molten material.

そして、該素子７からの信号を受ける制御回路がギヤポ
ンプ回転数を制御し、溶融材料の温度が設定値よりも低
下したときにはギヤポンプ６の回転数を下げて溶融材料
の吐出量を減少させることにより、前記チャンバー２内
の材料の充填率が高くなり、材料に対するせん断仕事が
増大し、これに伴って温度が上昇し、設定値に戻される
。A control circuit receiving a signal from the element 7 controls the gear pump rotation speed, and when the temperature of the molten material falls below a set value, the rotation speed of the gear pump 6 is lowered to reduce the discharge amount of the molten material. , the filling rate of the material in the chamber 2 increases, the shearing work on the material increases, and the temperature rises accordingly and returns to the set value.

逆に溶融材料の温度が設定値よりも高くなったときには
、ギヤポンプ６の回転数を上げることにより、温度が下
がってやはり設定値に戻されることとなる。Conversely, when the temperature of the molten material becomes higher than the set value, increasing the rotation speed of the gear pump 6 lowers the temperature and returns it to the set value.

また、温度検出信号に応じた制御は、ギヤポンプ６の回
転数の制御に加え、ミキシングロータ３゜３０回転数も
制御するようにしてもよい。In addition to controlling the rotation speed of the gear pump 6, the control according to the temperature detection signal may also control the rotation speed of the mixing rotor 3°30.

このようにして温度を制御することにより、混練度を均
一化すべく調整し得ることとなる。By controlling the temperature in this manner, the degree of kneading can be adjusted to be uniform.

また、前記ギヤポンプ６は、混練機本体１を減圧脱気下
で運転する場合にも適するもので、第５図に示す実施例
では、このような運転のため、混練機本体１のチャンバ
ー２にベント孔８を設け、真空ポンプ等により減圧脱気
し得るようにしている。The gear pump 6 is also suitable for operating the kneading machine main body 1 under reduced pressure and degassing, and in the embodiment shown in FIG. A vent hole 8 is provided to enable depressurization and degassing using a vacuum pump or the like.

さらに、同実施例では、粉体塗料等の成形用として、冷
却コンベア設備１０を組合わせている。Furthermore, in the same embodiment, a cooling conveyor facility 10 is combined for molding powder coatings and the like.

また、混練機本体１においては、チャンバー２の中央部
に混練物が充満するように、第６図及び第７図に示す如
き断面形状を有するロータ３，３を用いている。Further, in the kneading machine main body 1, rotors 3, 3 having a cross-sectional shape as shown in FIGS. 6 and 7 are used so that the center of the chamber 2 is filled with the kneaded material.

この装置の使用例を示すと、例えは熱硬化性アクリル樹
脂及び赤色有機顔料を主成分とする粉体塗料用原料を混
練機本体１において混練し、この際、前記ベント孔８を
減圧して脱気する。An example of the use of this device is to knead raw materials for a powder coating whose main components are a thermosetting acrylic resin and a red organic pigment in the kneading machine body 1, and at this time, the vent hole 8 is depressurized. Degas.

このように減圧脱気状態で運転すると、被混練物中に含
まれる微細な気泡や蒸発する水分が除去されて粉体塗料
の光沢を高める等の効果があり、この場合に、特に前記
ギヤポンプ６を用いることにより、吐出口５からの材料
の確実な吐出と空気のシールを達成し、減圧脱気状態で
の運転を可能にする。Operating under reduced pressure and degassing in this manner has the effect of removing fine air bubbles contained in the material to be kneaded and evaporating moisture, thereby increasing the gloss of the powder coating. By using this, reliable discharge of material from the discharge port 5 and air sealing are achieved, and operation in a reduced pressure degassing state is possible.

溶融混練後ギヤポンプ６により吐出された材料は、ロー
ル１１．１１により圧延され、コンベア１２上で冷却さ
れた後、破砕機１３により破砕されて粉粒物となる。After melt-kneading, the material discharged by the gear pump 6 is rolled by rolls 11, 11, cooled on the conveyor 12, and then crushed by the crusher 13 to become powder.

このような使用例において、混練機の生産量に応じてギ
ヤポンプ６の回転数を変化させると、第８図のグラフに
示す如く、一定の使用可能な範囲があり、この範囲内に
おいて減圧下で安定した運転が可能となる。In such an example of use, if the rotation speed of the gear pump 6 is changed according to the production volume of the kneading machine, there is a certain usable range as shown in the graph of Fig. 8, and within this range, under reduced pressure, Stable operation is possible.

同グラフは、ギヤポンプ６の回転数と吐出量との関係を
理論的に得られる効率１００％の場合と、実験値（効率
８６．５％）、効率８０％、効率７０％の各場合につい
てそれぞれ示したものである。The same graph shows the relationship between the rotation speed and the discharge amount of the gear pump 6 for the theoretically obtained case of 100% efficiency, experimental values (86.5% efficiency), 80% efficiency, and 70% efficiency. This is what is shown.

使用した混練機のチャンバー内径は５０．８ｍｍφであ
る。The inner diameter of the chamber of the kneader used was 50.8 mmφ.

また、生産量３３ｋｇ／Ｈ。ロータ回転数４００ Ｒ，
ＰＭ 、ベント孔の圧力１５０ｍｍＨｇとし、被混練物
の樹脂温度は１１０℃に保ち、この条件のもとで赤色有
機顔料の粒子径を測定したところ平均粒子径は８μであ
り、一方、減圧しない場合の平均粒子径は１５μであっ
た。Also, the production amount is 33kg/h. Rotor rotation speed 400 R,
PM, the vent hole pressure was 150 mmHg, the resin temperature of the material to be kneaded was maintained at 110°C, and when the particle size of the red organic pigment was measured under these conditions, the average particle size was 8 μ; on the other hand, when the pressure was not reduced The average particle diameter was 15μ.

第９図はさらに別の実施例として、造粒装置と組合わせ
た場合を示し、同図において、２１はギヤポンプ６に直
結したストランドダイ、２２は冷却水槽、２３は造粒用
カッターであって、溶融混練された材料を、前記ギヤポ
ンプ６を介してストランドダイ２１により押出し、冷却
した後ストランドカッター２３にて切断することにより
ペレット化するものである。FIG. 9 shows yet another embodiment in which it is combined with a granulation device. In the same figure, 21 is a strand die directly connected to the gear pump 6, 22 is a cooling water tank, and 23 is a granulation cutter. The melt-kneaded material is extruded by a strand die 21 via the gear pump 6, cooled, and then cut by a strand cutter 23 to form pellets.

この場合も混練機本体１においては、図示しないが、チ
ャンバーにベント孔を設けて減圧脱気状態で運転し得る
ことは勿論である。In this case as well, although not shown in the figures, the kneading machine main body 1 can be provided with a vent hole in the chamber and operated under reduced pressure and degassing.

このように造粒装置と組合わせる場合に、本発明の混練
機は、前記ギヤポンプ６が押出能力を有するため、スク
リュー押出機を不用にして設備費の低減と設置スペース
の縮少を可能にし得る。When combined with a granulation device in this way, the kneading machine of the present invention can eliminate the need for a screw extruder because the gear pump 6 has an extrusion capacity, making it possible to reduce equipment costs and installation space. .

斜上の如く、本発明の連続式混練機は、混練機本体の吐
出口にギヤポンプを直結すると共に、温度検出素子によ
り上記吐出口における溶融材料の温度を検出し、その検
出信号に基づいて上記温度を一定に保つようにギヤポン
プ回転数を制御することにより混練度を調整し得るよう
にしているため、混練度の均一化すなわち溶融混練され
た材料の均質化を図ることができる。As shown above, in the continuous kneading machine of the present invention, a gear pump is directly connected to the discharge port of the kneading machine body, the temperature of the molten material at the discharge port is detected by a temperature detection element, and the temperature of the molten material is detected based on the detection signal. Since the degree of kneading can be adjusted by controlling the rotational speed of the gear pump so as to keep the temperature constant, it is possible to make the degree of kneading uniform, that is, to homogenize the melt-kneaded material.

特に上記ギヤポンプにより確実な材料の吐出が可能で、
混練機の運転条件を一定に定めると長時間安定した混練
度と押出量を確保することができ、また、スクリュー押
出機を使用する場合と比べて材料の温度変化に対する制
御の応答性が良く、ギヤポンプの回転慣性も少ないため
、調整精度が高く、制御操作も容易である。In particular, the gear pump mentioned above enables reliable material discharge.
By setting the operating conditions of the kneader constant, it is possible to ensure a stable kneading degree and extrusion rate over a long period of time, and the control response to changes in material temperature is better than when using a screw extruder. Since the gear pump has little rotational inertia, adjustment accuracy is high and control operations are easy.

さらに、吐出口における材料の吐出と空気のシールを確
実に行い得るため、混練機本体内を減圧脱気した状態で
運転することも任意に可能である等、数多くの効果を奏
するものである。Furthermore, since the material can be reliably discharged and the air sealed at the discharge port, it is possible to operate the kneading machine in a state where the inside of the kneading machine body is depressurized and degassed.

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

図は本発明混練機の実施例を示すもので、第１図は混練
機全体の縦断正面図、第２図は第１図■−■線に沿った
拡大縦断面図、第３図は第１図■−■線に沿った拡大縦
断面図、第４図はギヤポンプの拡大縦断側面図、第５図
はベント装置を具備した本発明混練機と冷却コンベア装
置との組合わせを示す縦断正面図、第６図は第５図ＶＩ
−ＶＩ線に沿った拡大縦断面図、第７図は第５図■−■
線に沿った拡大縦断面図、第８図はギヤポンプの回転数
と吐出量との関係を示すグラフ、第９図は本発明混練機
と造粒装置との組合わせを示す縦断正面図である。 １・・・・・・混練機本体、２・・・・・・ミキシング
チャンバー、３・・・・・・ミキシングロータ、５・・
・吐出口、６・・・・・・ギヤポンプ、７・・・温度検
出素子。The figures show an embodiment of the kneading machine of the present invention. Fig. 1 is a longitudinal sectional front view of the entire kneading machine, Fig. 2 is an enlarged longitudinal sectional view taken along the line Figure 1 is an enlarged vertical cross-sectional view taken along the line ■-■, Figure 4 is an enlarged vertical cross-sectional side view of the gear pump, and Figure 5 is a vertical cross-sectional front view showing a combination of the kneading machine of the present invention equipped with a vent device and a cooling conveyor device. Figure 6 is Figure 5 VI
- Enlarged longitudinal cross-sectional view along VI line, Figure 7 is Figure 5 ■-■
FIG. 8 is a graph showing the relationship between the rotation speed and discharge amount of the gear pump, and FIG. 9 is a longitudinal sectional front view showing the combination of the kneading machine and the granulating device of the present invention. . 1...Kneading machine body, 2...Mixing chamber, 3...Mixing rotor, 5...
・Discharge port, 6...Gear pump, 7...Temperature detection element.

Claims (1)

【特許請求の範囲】 １ 一端側に被混線材料の供給口を有し他端側に吐出口
を有するチャンバー内に、被混線材料を連続的に溶融混
練するミキシングロータを設けた連続式混練機本体と、
上記供給口から上記チャンバー内に被混線材料を連続定
量的に供給するフィーダーと、上記吐出口に直結したギ
ヤポンプとを装備し、上記ギヤポンプを回転数調節可能
なギヤポンプ駆動装置に連結すると共に、上記吐出口に
おける溶融材料の温度を検出する温度検出素子と１、該
温度検出素子からの検出信号に応じて溶融材料の温度が
設定値より低くなったときはギヤポンプ回転数を減少さ
せ溶融材料の温度が設定値より高くなったときはギヤポ
ンプ回転数を増加させるようにギヤポンプ駆動装置を制
御する制御回路とを設けたことを特徴とする連続式混練
機。 ２ 前記混練機本体の内部を減圧下で脱気するベント装
置を付設した特許請求の範囲第１項記載の連続式混練機
。[Scope of Claims] 1. A continuous kneading machine equipped with a mixing rotor that continuously melts and kneads the material to be mixed in a chamber having a supply port for the material to be mixed at one end and a discharge port at the other end. The main body and
Equipped with a feeder that continuously and quantitatively supplies the material to be mixed into the chamber from the supply port, and a gear pump directly connected to the discharge port, the gear pump is connected to a gear pump drive device whose rotation speed is adjustable, and the A temperature detection element 1 detects the temperature of the molten material at the discharge port, and when the temperature of the molten material becomes lower than a set value according to a detection signal from the temperature detection element, the gear pump rotation speed is reduced and the temperature of the molten material is 1. A continuous kneading machine, comprising: a control circuit that controls a gear pump drive device to increase the gear pump rotation speed when the number of rotations of the gear pump increases when 2. The continuous kneading machine according to claim 1, further comprising a vent device for deaerating the interior of the kneading machine body under reduced pressure.
JP54036681A 1979-03-27 1979-03-27 Continuous kneading machine Expired JPS5810126B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP54036681A JPS5810126B2 (en) 1979-03-27 1979-03-27 Continuous kneading machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP54036681A JPS5810126B2 (en) 1979-03-27 1979-03-27 Continuous kneading machine

Publications (2)

Publication Number Publication Date
JPS55139824A JPS55139824A (en) 1980-11-01
JPS5810126B2 true JPS5810126B2 (en) 1983-02-24

Family

ID=12476581

Family Applications (1)

Application Number Title Priority Date Filing Date
JP54036681A Expired JPS5810126B2 (en) 1979-03-27 1979-03-27 Continuous kneading machine

Country Status (1)

Country Link
JP (1) JPS5810126B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6230990Y2 (en) * 1983-10-13 1987-08-08
JPH0313213Y2 (en) * 1984-04-28 1991-03-27

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5948810U (en) * 1982-09-22 1984-03-31 株式会社日本製鋼所 Two-screw continuous kneading device
JP4506234B2 (en) * 2004-03-30 2010-07-21 横浜ゴム株式会社 Viscous mixing device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6230990Y2 (en) * 1983-10-13 1987-08-08
JPH0313213Y2 (en) * 1984-04-28 1991-03-27

Also Published As

Publication number Publication date
JPS55139824A (en) 1980-11-01

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