JP2004230591A - Cooling device of pin type kneading continuous extruder - Google Patents

Cooling device of pin type kneading continuous extruder Download PDF

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Publication number
JP2004230591A
JP2004230591A JP2003018790A JP2003018790A JP2004230591A JP 2004230591 A JP2004230591 A JP 2004230591A JP 2003018790 A JP2003018790 A JP 2003018790A JP 2003018790 A JP2003018790 A JP 2003018790A JP 2004230591 A JP2004230591 A JP 2004230591A
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Japan
Prior art keywords
pin
cooling water
screw
screw shaft
type kneading
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JP2003018790A
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Japanese (ja)
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JP4072820B2 (en
Inventor
Tsuyoshi Okada
健 岡田
Kunihiko Suzuki
国彦 鈴木
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Yokohama Rubber Co Ltd
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Yokohama Rubber Co Ltd
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Priority to JP2003018790A priority Critical patent/JP4072820B2/en
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    • 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
    • B29C48/50—Details of extruders
    • B29C48/505—Screws
    • B29C48/51—Screws with internal flow passages, e.g. for molten material
    • B29C48/515—Screws with internal flow passages, e.g. for molten material for auxiliary fluids, e.g. foaming agents
    • 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
    • B29C48/78—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling
    • B29C48/80—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling at the plasticising zone, e.g. by heating cylinders
    • B29C48/84—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling at the plasticising zone, e.g. by heating cylinders by heating or cooling the feeding screws
    • B29C48/85—Cooling

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cooling device of a pin type kneading continuous extruder for circulating cooling water through at least one of a screw shaft, screw blades and a plurarity of pins protruded into a cylinder to improve a cooling effect. <P>SOLUTION: The cooling device in the cylinder 5 is constituted so that inner and outer circulating water channels 20a and 20b for cooling water W are formed to the center part in the longitudinal direction of the screw shaft 7 and the outer periphery of the center part and connected to the leading end of the screw shaft 7. An outer peripheral water channel 21b is connected to the cooling water passages 22 formed in the screw blades 6 approaching the pins 19 and circulating partition members 23 are provided in the cooling water passages 22. A plurality of the pins 19 arranged in the intermittent parts 18 of the screw blades 6 or a plurality of the pins 19 arranged in the groove parts 26 of the flow adjusting parts 25 of the screw shaft 7 have a double pipe structure and the cooling water W injected in the inner pipe 27 of the double pipe structure of each pin is circulated to the outer pipe 28 of the double pipe structure to cool the screw shaft 7. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

【０００１】
【発明の属する技術分野】
この発明は、ピンタイプ混練連続押出し装置の冷却装置に係わり、更に詳しくはスパイラル状のスクリュー羽根を備えたスクリュー軸内または、シリンダー内に突出させた複数本のピンの内部の少なくとも一方に、冷却水の循環水路を形成して混練するゴム状弾性材料の混合低温化を図るようにしたピンタイプ混練連続押出し装置の冷却装置に関するものである。
【０００２】
【従来の技術】
一般に空気入りタイヤなどのゴム製品の製造工程において、タイヤのキャップトレッドやサイドトレッド等のゴム押出し成形品は、混練機を用いて原料ゴムに補強剤、充填剤、可塑剤などの添加剤を配合して混練する、所謂、ノンプロゴム混練を行ってシート状のゴム組成物を形成する。
【０００３】
そしてゴム組成物が冷却後にこのシート状のゴム組成物を再び混練機に投入し、このゴム組成物に、加硫剤や加硫促進剤を添加して混練する、所謂、ファイナルゴム混練を行い、このファイナルゴム混練により得られたシート状のゴム組成物を押出機に供給して、所定の部品形状に形成する方法が行われている。
【０００４】
また、近年ではスクリュー軸を回転自在に内装したシリンダーに、スクリュー羽根とシリンダー内壁との空間部に放射方向から中心に向かって複数本のピンを突設させ、混練時の抵抗を大きくしたピンタイプの混練連続押出し装置が採用されてきており、このピンタイプの混練連続押出し装置は、ゴム材料の混練特性に優れているとされている。
【０００５】
然しながら、このような従来のピンタイプの混練機は、ピンによる混練抵抗が大きいことから、発熱量も大きくなる。この結果、ファイナルゴム混練のように、一度に大容量のゴム組成物に加硫剤や加硫促進剤を添加して混練を行う工程では、発熱量が益々大きくなる上に、加硫剤やその他の薬品の均一分散が困難となり、更に短時間または低温で加硫が始まる配合のゴム組成物の場合には、混練時に所謂、焼けが生じて混練が困難になることがあった。
【０００６】
また、ノンプロ混練りにおいても混練部の発熱が大きいことによる混練り効率の悪化を避けられないことがあった。
【０００７】
そこで、ピンタイプの混練機において、効率的な混練を維持させるためには、効果的な冷却が必要であり、このため、従来のピンタイプの混練機では、スクリュー内に冷却水を通水させたり、またシリンダーライナーの外周に冷却水の通水路を設けたものが提案されている（例えば、特許文献１，特許文献２参照）。
【０００８】
【特許文献１】
欧州特許出願公開第１２３２８４７号明細書（第２〜３頁、図２）。
【特許文献２】
特表平７−５０６５４４号公報（第５〜６頁、図２）。
【０００９】
【発明が解決しようとする課題】
然しながら、上記のようなピンタイプの混練機の冷却手段は、単にスクリュー内に冷却水を通水させるか、シリンダーライナーの外周に冷却水の通水路を設けたものしかなく、混練りによる発熱が発生しているピンのシリンダー内挿入部、或いはピンと近接するスクリュー羽根の内部の循環通水がなく、効果的な冷却が行われていないのが現状である。
【００１０】
この発明はかかる従来の問題点に着目し、スクリュー軸内及びスクリュー羽根内と、シリンダー内に突出させた複数本のピンの内部との少なくとも一方に、冷却水を循環させて冷却効果を改善し、混練時の低温化により、混合物の物性の向上と混合効率を改善することを可能としたピンタイプ混練連続押出し装置の冷却装置を提供することを目的とするものである。
【００１１】
【課題を解決するための手段】
この発明は上記目的を達成するため、この発明のピンタイプ混練連続押出し装置の冷却装置は、スクリュー軸の長手方向の中心部と、その外周に冷却水の内外循環水路を形成し、この内外循環水路の外周水路を、前記ピンに近接するスクリュー羽根内に形成した冷却水通路に接続させて構成したことを要旨とするものである。
【００１２】
ここで、前記スクリュー羽根内の冷却水通路に循環仕切り部材を内装するものである。
【００１３】
また、この発明の他のピンタイプ混練連続押出し装置の冷却装置は、複数本のピンの長手方向の内部に、冷却水の循環水路を形成したことを要旨とするものである。
【００１４】
更に、この発明のピンタイプ混練連続押出し装置の冷却装置は、スクリュー軸の長手方向の中心部と、その外周に冷却水の内外循環水路を形成し、この内外循環水路の外周水路を、前記ピンに近接するスクリュー羽根内に形成した冷却水通路に接続させる共に、前記複数本のピンの長手方向の内部に、冷却水の循環水路を形成したことを要旨とするものである。
【００１５】
また、前記シリンダーに、ペレット状のゴム材料を供給するゴム供給手段と粉体状の配合剤を供給する配合剤供給手段とから成る材料同一供給部を接続することも可能である。
【００１６】
上述した構成によれば、カーボン／ポリマーの混練りに関して、従来困難とされていた１００°Ｃ以下の混練や、７０°Ｃ近傍でのリミルによる粘土低下（カーボン等、配合剤の分散）の大幅な改善を図ることが出来、加硫剤を入れた混合温度の低下等、混合温度低下による混練り効率を大幅に向上させることが出来、混練物の高物性化も図ることが出来るものである。
【００１７】
【発明の実施の形態】
以下、添付図面に基づき、この発明の実施形態を説明する。
【００１８】
図１は、この発明の冷却装置を実施したピンタイプ混練連続押出し装置の概略正面図、図２は図１の平面図を示し、１は供給されたゴム・配合剤を混練して押し出すスクリュー式押出機、２はペレット状の定量のゴム材料をスクリュー式押出機１に供給するゴム供給手段、３ａ，３ｂは粉体状の配合剤（この実施形態では、定量の補強剤、充填剤、可塑剤等の他、加硫剤や加硫促進剤を言う）をスクリュー式押出機１に供給する各々の配合剤供給手段である。
【００１９】
前記スクリュー式押出機１は、ベース４の上方に横設支持されたシリンダー５内に図３に示すようなスクリュー羽根６を備えたスクリュー軸７が回転可能に内装されている。
【００２０】
前記シリンダー５の後部側には、ゴム・配合剤の混合物をスクリュー式押出機１に供給するための材料同一供給部８が設けられている。この材料同一供給部８では、例えば、１００：１の割合で、ゴム供給手段２から供給されたペレット状のゴム材料に配合剤供給手段３ａ，３ｂから供給された上記粉体状の配合剤を振りかけて均一に配合できるように所謂、まぶした状態にする。
【００２１】
スクリュー軸７の後部には、駆動モータ等の駆動部９が連結され、この駆動部９の作動によりスクリュー軸７が所定の回転速度で回転駆動するようになっている。
【００２２】
ベース４上に立設された架台１０，１１Ａ，１１Ｂ上に上記ゴム供給手段２と配合剤供給手段３ａ，３ｂが設けられている。ゴム供給手段２は、後部の駆動部９の上方に配設された架台１０上に設置され、ペレット状のゴム材料を収容するホッパー１２を有している。このホッパー１２は、スクリュー式押出機１の材料同一供給部８に配管１３を介して接続され、混練に使用される所定量のペレット状のゴム材料がホッパー１２から材料同一供給部８に定量供給されるようになっている。
【００２３】
前記配合剤供給手段３ａ，３ｂは、ゴム供給手段２の前側に配設された左右の架台１１Ａ，１１Ｂ上にそれぞれ設置され、配合剤の粉体を収容するホッパー１４を備えている。両ホッパー１４も配管１５を介して材料同一供給部８に接続してあり、混練に要する所定量の配合剤の粉体をホッパー１４から材料同一供給部８に定量供給できるようにしてある。図中、１６，１７はホッパー１２，１４の蓋である。
【００２４】
前記スクリュー軸７の外周面に形成された螺旋状のスクリュー羽根６には、所定の間隔で間欠部１８が形成され、この間欠部１８に対応する位置には、前記シリンダー５に取付けられた複数本のピン１９が中心に向かって放射方向から突出して設けられている。
【００２５】
次に、この発明の実施形態におけるスクリュー軸７と、シリンダー５に設けられた冷却装置の構成について具体的に説明する。
【００２６】
先ず、スクリュー軸７に於ける冷却装置は、図４に示すように、スクリュー軸７の長手方向の中心部と、その外周に冷却水Ｗの内外循環水路２０ａ，２０ｂを形成し、この内外循環水路２０ａ，２０ｂは、スクリュー軸７の先端において接続され、内部循環水路２１ａは、スクリュー軸７の基端部において図示しない冷却水供給手段と接続され、また外周水路２１ｂは、スクリュー軸７の基端部において図示しない排水管に接続されている。
【００２７】
更に、外周水路２１ｂは、図４に示すように、前記ピン１９に近接するスクリュー羽根６内に形成した冷却水通路２２に接続させて構成し、スクリュー羽根６内の冷却水通路２２には、冷却水Ｗを循環させるための循環仕切り部材２３が内装してある。
【００２８】
従って、スクリュー式押出機１による混練物の混練時には、スクリュー軸７の長手方向の中心部に形成された内部循環水路２１ａを通る冷却水Ｗは、スクリュー軸７の先端において反転して外周水路２１ｂに流入しながらスクリュー軸７を常時冷却すると共に、スクリュー羽根６内の冷却水通路２２に流入した冷却水Ｗは、ピン１９に近接するスクリュー羽根６を常時冷却することが出来る。 この結果、カーボン／ポリマー等の混練物を、常に１００°Ｃ以下で混練することが可能となり、７０°Ｃ近傍でのリミルによる粘土低下の大幅な改善を図ることが出来、加硫剤を入れた混合温度の低下等、混合温度低下による混練り効率を大幅に向上させることが出来るものである。
【００２９】
また、この発明の他の実施形態として、図５〜図７に示すように、シリンダー５に取付けられた前記複数本のピン１９の長手方向の内部に、冷却水Ｗの循環水路２４を設けることも可能である。
【００３０】
即ち、上記のようにスクリュー羽根６の間欠部１８に対応して配設した複数本のピン１９内や、図５及び図６に示すように、スクリュー軸７の中間に形成した流れ調整部２５の溝部２６に対応して配設した複数本のピン１９内を、図７に示すように二重管構造にして、内管２７に注入した冷却水Ｗを外管２８に循環させてスクリュー軸７を冷却するように構成したものである。
【００３１】
なお、上記の各実施形態は、シリンダー５に於ける冷却装置と、スクリュー軸７に設けた冷却装置とを別々に設ける場合について説明したが、第１実施形態におけるシリンダー５に於ける冷却装置とスクリュー軸７に設けた冷却装置とを併用させて、冷却水Ｗを循環させて冷却効果を改善し、混練時の低温化により、混合物の物性の向上と混合効率を改善することも可能である。
【００３２】
これにより、カーボン／ポリマーの混練り関して、従来困難とされていた１００°Ｃ以下の混練や、７０°Ｃ近傍でのリミルによる粘土低下の大幅な改善を図ることが出来、加硫剤を入れた混合温度の低下等、混合温度低下による混練り効率を大幅に向上させることが出来、混練物の高物性化を図ることが出来る。
【００３３】
【発明の効果】
この発明は、上記のようにピンタイプ混練連続押出し装置において、スクリュー軸内及びスクリュー羽根内と、シリンダー内に突出させた複数本のピンの内部との少なくとも一方に、冷却水の循環させて冷却効果を改善するので、混練時の低温化によって混合物の物性の向上と混合効率を改善するが可能となり、特に、カーボン／ポリマーの混練り関して、従来困難とされていた１００°Ｃ以下の混練や、７０°Ｃ近傍でのリミルによる粘土低下の大幅な改善を図ることが出来、加硫剤を入れた混合温度の低下等、混合温度低下による混練り効率を大幅に向上させることが出来、混練物の高物性化を図ることが出来る効果がある。
【図面の簡単な説明】
【図１】この発明の冷却装置を実施したピンタイプ混練連続押出し装置の概略正面図である。
【図２】図１の平面図である。
【図３】スクリュー軸の一部拡大正面図である。
【図４】図３のＸ部の一部切欠した拡大図である。
【図５】シリンダーに取付けたピンの一部拡大断面図である。
【図６】図５のＡ−Ａ矢視半側面図である。
【図７】シリンダーに取付けたピンの断面図である。
【符号の説明】
１ スクリュー式押出機 ２ ゴム供給手段
３ａ，３ｂ 配合剤供給手段 ４ ベース
５ シリンダー ６ スクリュー羽根
７ スクリュー軸 ８ 材料同一供給部
９ 駆動部
１０，１１Ａ，１１ｂ 架台
１２ ホッパー １３ 配管
１４ ホッパー １５ 配管
１６，１７ 蓋 １８ 間欠部
１９ ピン
２０ａ，２０ｂ 内外循環水路
２１ａ 内部循環水路 ２１ｂ 外周水路
２２ 冷却水通路 ２３ 循環仕切り部材
２４ 循環水路 ２５ 流れ調整部
２６ 溝部 ２７ 内管
２８ 外管 Ｗ 冷却水[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a cooling device for a pin-type kneading continuous extrusion device, and more particularly, to a cooling device in a screw shaft having a spiral screw blade or at least one of a plurality of pins protruding into a cylinder. The present invention relates to a cooling device for a pin-type kneading continuous extruder which forms a water circulation channel to lower the temperature of mixing of rubber-like elastic materials to be kneaded.
[0002]
[Prior art]
Generally, in the manufacturing process of rubber products such as pneumatic tires, rubber extruded products such as tire cap treads and side treads are compounded with additives such as reinforcing agents, fillers, and plasticizers in the raw rubber using a kneader. Kneading, that is, so-called non-pro rubber kneading, to form a sheet-like rubber composition.
[0003]
After the rubber composition has cooled, the sheet-shaped rubber composition is again put into the kneading machine, and the rubber composition is kneaded by adding a vulcanizing agent or a vulcanization accelerator, so-called final rubber kneading. A method of supplying a sheet-like rubber composition obtained by kneading the final rubber to an extruder to form a predetermined component shape has been performed.
[0004]
In recent years, a pin with a screw shaft rotatably mounted inside a cylinder with multiple pins protruding from the radial direction toward the center in the space between the screw blade and the cylinder inner wall to increase the resistance during kneading And the pin-type continuous kneading extruder is said to be excellent in rubber material kneading characteristics.
[0005]
However, in such a conventional pin-type kneader, the amount of heat generated is large because the kneading resistance of the pin is large. As a result, as in final rubber kneading, in the step of kneading by adding a vulcanizing agent or a vulcanization accelerator to a large-volume rubber composition at a time, the calorific value becomes larger and the vulcanizing agent and It is difficult to uniformly disperse other chemicals, and in the case of a rubber composition having a compound that starts vulcanization in a short time or at a low temperature, so-called scorching may occur during kneading, making kneading difficult.
[0006]
In addition, even in non-professional kneading, deterioration of kneading efficiency due to a large amount of heat generated in the kneading section may not be avoided.
[0007]
Therefore, in the pin-type kneader, in order to maintain efficient kneading, effective cooling is necessary.For this reason, in the conventional pin-type kneader, cooling water is passed through the screw. In addition, there has been proposed an arrangement in which a cooling water passage is provided on the outer periphery of a cylinder liner (for example, see Patent Documents 1 and 2).
[0008]
[Patent Document 1]
EP-A-1232847 (pages 2-3, FIG. 2).
[Patent Document 2]
JP-T-7-506544 (pages 5 to 6, FIG. 2).
[0009]
[Problems to be solved by the invention]
However, the cooling means of the above-mentioned pin-type kneader is merely a means for allowing the cooling water to flow through the screw or a means for providing a cooling water flow path on the outer periphery of the cylinder liner, and the heat generated by the kneading does not occur. At present, there is no circulating water flowing through the generated pin insertion portion in the cylinder or inside the screw blade adjacent to the pin, and effective cooling is not performed at present.
[0010]
The present invention focuses on such conventional problems, and improves the cooling effect by circulating cooling water in at least one of the inside of the screw shaft and the screw blade and the inside of the plurality of pins protruding into the cylinder. It is another object of the present invention to provide a cooling device for a pin-type kneading continuous extruder capable of improving physical properties of a mixture and improving mixing efficiency by lowering the temperature during kneading.
[0011]
[Means for Solving the Problems]
In order to achieve the above object, the present invention provides a cooling device for a pin-type kneading continuous extrusion device according to the present invention. The gist of the invention is that an outer peripheral waterway of the waterway is connected to a cooling water passage formed in a screw blade close to the pin.
[0012]
Here, a circulation partition member is provided in the cooling water passage in the screw blade.
[0013]
Another aspect of the present invention is a cooling device for a pin-type kneading continuous extrusion device, wherein a cooling water circulation channel is formed inside the plurality of pins in the longitudinal direction.
[0014]
Further, the cooling device of the pin-type kneading continuous extrusion device of the present invention is configured such that an inner / outer circulation channel of cooling water is formed on a center portion in a longitudinal direction of a screw shaft and an outer periphery thereof, and the outer circumference channel of the inner / outer circulation channel is formed by the pin And a cooling water circulation channel is formed inside the longitudinal direction of the plurality of pins while being connected to a cooling water passage formed in a screw blade close to the screw blade.
[0015]
Further, it is also possible to connect to the cylinder the same material supply section comprising a rubber supply means for supplying a pellet-like rubber material and a compounding agent supply means for supplying a powdery compounding agent.
[0016]
According to the above-described structure, regarding the kneading of carbon / polymer, the kneading at 100 ° C. or less, which has been considered difficult in the past, and the decrease in clay (dispersion of compounding agents such as carbon) due to remilling at around 70 ° C. The kneading efficiency can be greatly improved, and the kneading efficiency can be greatly improved by lowering the mixing temperature, such as lowering the mixing temperature of the vulcanizing agent, and the physical properties of the kneaded material can be improved. .
[0017]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.
[0018]
FIG. 1 is a schematic front view of a pin-type kneading continuous extruder in which a cooling device of the present invention is implemented, FIG. 2 is a plan view of FIG. 1, and 1 is a screw type for kneading and extruding a supplied rubber and compounding agent. The extruder 2 is a rubber supply means for supplying a fixed amount of rubber material in the form of pellets to the screw type extruder 1, and 3a and 3b are powdered compounding agents (in this embodiment, fixed amount of reinforcing agent, filler, plasticizer). And a vulcanizing agent and a vulcanization accelerator in addition to an agent, etc.) to the screw-type extruder 1.
[0019]
In the screw type extruder 1, a screw shaft 7 having a screw blade 6 as shown in FIG. 3 is rotatably mounted in a cylinder 5 horizontally supported above a base 4.
[0020]
On the rear side of the cylinder 5, an identical material supply section 8 for supplying a mixture of rubber and compounding agent to the screw type extruder 1 is provided. In the same material supply unit 8, for example, the powdery compounding agent supplied from the compounding agent supply units 3 a and 3 b is added to the pellet-like rubber material supplied from the rubber supply unit 2 at a ratio of 100: 1. Sprinkle so as to form a so-called dusted state so that the ingredients can be uniformly blended.
[0021]
A drive unit 9 such as a drive motor is connected to a rear portion of the screw shaft 7, and the operation of the drive unit 9 causes the screw shaft 7 to rotate at a predetermined rotation speed.
[0022]
The rubber supply means 2 and the compounding agent supply means 3a, 3b are provided on mounts 10, 11A, 11B erected on the base 4. The rubber supply means 2 is provided on a gantry 10 disposed above the rear drive section 9 and has a hopper 12 for accommodating a pellet-like rubber material. The hopper 12 is connected to the same material supply unit 8 of the screw type extruder 1 via a pipe 13, and a predetermined amount of a rubber material in the form of pellets used for kneading is supplied from the hopper 12 to the same material supply unit 8. It is supposed to be.
[0023]
The compounding agent supply means 3a, 3b are respectively installed on left and right gantry 11A, 11B disposed in front of the rubber supply means 2 and include hoppers 14 for storing compounding agent powder. Both hoppers 14 are also connected to the same material supply unit 8 via a pipe 15 so that a predetermined amount of compounding agent powder required for kneading can be supplied from the hopper 14 to the same material supply unit 8 in a constant amount. In the figure, 16 and 17 are lids of the hoppers 12 and 14, respectively.
[0024]
The spiral screw blades 6 formed on the outer peripheral surface of the screw shaft 7 are provided with intermittent portions 18 at predetermined intervals, and at positions corresponding to the intermittent portions 18, a plurality of The book pins 19 are provided so as to project from the radial direction toward the center.
[0025]
Next, the configuration of the screw shaft 7 and the cooling device provided in the cylinder 5 in the embodiment of the present invention will be specifically described.
[0026]
First, as shown in FIG. 4, the cooling device in the screw shaft 7 forms the inner and outer circulation water passages 20a and 20b for the cooling water W on the center in the longitudinal direction of the screw shaft 7 and the outer periphery thereof. The water passages 20a and 20b are connected at the distal end of the screw shaft 7, the internal circulation water passage 21a is connected to a cooling water supply means (not shown) at the base end of the screw shaft 7, and the outer peripheral water passage 21b is connected to the base of the screw shaft 7. The end is connected to a drain pipe (not shown).
[0027]
Further, as shown in FIG. 4, the outer peripheral water passage 21 b is connected to a cooling water passage 22 formed in the screw blade 6 close to the pin 19, and the cooling water passage 22 in the screw blade 6 has A circulation partition member 23 for circulating the cooling water W is provided therein.
[0028]
Therefore, at the time of kneading the kneaded material by the screw type extruder 1, the cooling water W passing through the internal circulation channel 21a formed at the central portion in the longitudinal direction of the screw shaft 7 is inverted at the tip of the screw shaft 7 and becomes the outer channel 21b. The cooling water W flowing into the cooling water passage 22 in the screw blade 6 can always cool the screw blade 6 close to the pin 19 while cooling the screw shaft 7 while flowing into the screw blade 6. As a result, it is possible to knead the kneaded material such as carbon / polymer at 100 ° C. or less at all times, to greatly improve the clay reduction by remilling at around 70 ° C., and to add a vulcanizing agent. Thus, the kneading efficiency due to the lowering of the mixing temperature, such as the lowering of the mixing temperature, can be greatly improved.
[0029]
As another embodiment of the present invention, as shown in FIGS. 5 to 7, a circulating water passage 24 for the cooling water W is provided inside the plurality of pins 19 attached to the cylinder 5 in the longitudinal direction. Is also possible.
[0030]
That is, the flow adjusting portion 25 formed in the plurality of pins 19 provided corresponding to the intermittent portion 18 of the screw blade 6 as described above, or in the middle of the screw shaft 7 as shown in FIGS. The inside of the plurality of pins 19 arranged corresponding to the groove portions 26 is formed into a double pipe structure as shown in FIG. 7, and the cooling water W injected into the inner pipe 27 is circulated through the outer pipe 28 so that the screw shaft 7 is configured to be cooled.
[0031]
In each of the above embodiments, the case where the cooling device in the cylinder 5 and the cooling device provided in the screw shaft 7 are separately provided has been described. It is possible to improve the cooling effect by circulating the cooling water W by using the cooling device provided on the screw shaft 7 in combination, and to improve the physical properties of the mixture and the mixing efficiency by lowering the temperature during kneading. .
[0032]
As a result, regarding the kneading of carbon / polymer, it is possible to greatly improve the kneading at 100 ° C. or less, which has been considered difficult in the past, and the reduction of clay due to remilling at around 70 ° C. The kneading efficiency due to a decrease in the mixing temperature, such as a decrease in the mixing temperature, can be greatly improved, and the physical properties of the kneaded material can be improved.
[0033]
【The invention's effect】
The present invention relates to a pin-type kneading continuous extrusion apparatus as described above, wherein cooling water is circulated through at least one of the inside of a screw shaft and a screw blade and the inside of a plurality of pins protruding into a cylinder. Since the effect is improved, it is possible to improve the physical properties of the mixture and improve the mixing efficiency by lowering the temperature at the time of kneading. In particular, kneading at a temperature of 100 ° C. or less, which has been considered to be difficult in kneading carbon / polymer. Also, it is possible to significantly improve the reduction of clay by remilling at around 70 ° C., and it is possible to greatly improve the kneading efficiency due to the reduction of the mixing temperature, such as the reduction of the mixing temperature including the vulcanizing agent, There is an effect that the physical properties of the kneaded material can be improved.
[Brief description of the drawings]
FIG. 1 is a schematic front view of a pin-type kneading continuous extrusion device in which a cooling device of the present invention is implemented.
FIG. 2 is a plan view of FIG.
FIG. 3 is a partially enlarged front view of a screw shaft.
FIG. 4 is an enlarged view of a part X of FIG.
FIG. 5 is a partially enlarged sectional view of a pin attached to a cylinder.
FIG. 6 is a half side view taken along the line AA of FIG. 5;
FIG. 7 is a sectional view of a pin attached to a cylinder.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Screw-type extruder 2 Rubber supply means 3a, 3b Compounding agent supply means 4 Base 5 Cylinder 6 Screw blade 7 Screw shaft 8 Material same supply part 9 Drive parts 10, 11A, 11b Stand 12 Hopper 13 Pipe 14 Hopper 15 Pipe 16, 17 lid 18 intermittent portion 19 pin 20a, 20b internal / external circulating water channel 21a internal circulating water channel 21b outer peripheral water channel 22 cooling water channel 23 circulating partition member 24 circulating water channel 25 flow adjusting portion 26 groove portion 27 inner tube 28 outer tube W cooling water

Claims (6)

スパイラル状のスクリュー羽根を備えたスクリュー軸を回転自在に内装したシリンダーに、スクリュー羽根とシリンダー内壁との空間部に放射方向から中心に向かって複数本のピンを突設させたピンタイプ混練連続押出し装置において、
前記スクリュー軸の長手方向の中心部と、その外周に冷却水の内外循環水路を形成し、この内外循環水路の外周水路を、前記ピンに近接するスクリュー羽根内に形成した冷却水通路に接続させて構成したことを特徴とするピンタイプ混練連続押出し装置の冷却装置。Pin type kneading continuous extrusion in which a plurality of pins protrude from the radial direction toward the center in the space between the screw blades and the inner wall of the cylinder in which the screw shaft with spiral screw blades is rotatably housed. In the device,
A central portion in the longitudinal direction of the screw shaft and an inner and outer circulation channel of cooling water are formed on the outer periphery thereof, and an outer peripheral channel of the inner and outer circulation channel is connected to a cooling water passage formed in a screw blade close to the pin. A cooling device for a pin-type kneading continuous extruder, wherein the cooling device is configured as follows. 前記スクリュー羽根内の冷却水通路に循環仕切り部材を内装した請求項１に記載のピンタイプ混練連続押出し装置の冷却装置。The cooling device for a pin-type kneading continuous extruder according to claim 1, wherein a circulation partition member is provided in a cooling water passage in the screw blade. スパイラル状のスクリュー羽根を備えたスクリュー軸を回転自在に内装したシリンダーに、スクリュー羽根とシリンダー内壁との空間部に放射方向から中心に向かって複数本のピンを突設させたピンタイプ混練連続押出し装置において、
前記複数本のピンの長手方向の内部に、冷却水の循環水路を形成したことを特徴とするピンタイプ混練連続押出し装置の冷却装置。Pin type kneading continuous extrusion in which a plurality of pins protrude from the radial direction toward the center in the space between the screw blades and the inner wall of the cylinder in which the screw shaft with spiral screw blades is rotatably housed. In the device,
A cooling device for a pin-type kneading continuous extrusion device, wherein a circulation channel for cooling water is formed inside the plurality of pins in the longitudinal direction. スパイラル状のスクリュー羽根を備えたスクリュー軸を回転自在に内装したシリンダーに、スクリュー羽根とシリンダー内壁との空間部に放射方向から中心に向かって複数本のピンを突設させたピンタイプ混練連続押出し装置において、
前記スクリュー軸の長手方向の中心部と、その外周に冷却水の内外循環水路を形成し、この内外循環水路の外周水路を、前記ピンに近接するスクリュー羽根内に形成した冷却水通路に接続させる共に、前記複数本のピンの長手方向の内部に、冷却水の循環水路を形成したことを特徴とするピンタイプ混練連続押出し装置の冷却装置。Pin type kneading continuous extrusion in which a plurality of pins protrude from the radial direction toward the center in the space between the screw blades and the inner wall of the cylinder in which the screw shaft with spiral screw blades is rotatably housed. In the device,
A center portion in the longitudinal direction of the screw shaft and an outer and outer circulation channel of cooling water are formed on an outer periphery thereof, and an outer peripheral channel of the inner and outer circulation channel is connected to a cooling water passage formed in a screw blade close to the pin. A cooling device for a pin-type kneading continuous extruder, wherein a cooling water circulation channel is formed inside the plurality of pins in the longitudinal direction. 前記スクリュー羽根内の冷却水通路に循環仕切り部材を内装した請求項４に記載のピンタイプ混練連続押出し装置の冷却装置。The cooling device for a pin-type kneading continuous extruder according to claim 4, wherein a circulation partition member is provided in a cooling water passage in the screw blade. 前記シリンダーの材料供給部を、ペレット状のゴム材料を供給するゴム供給手段と粉体状の配合剤を供給する配合剤供給手段とから成る材料同一供給部に接続した請求項１，２，３，４または５に記載のピンタイプ混練連続押出し装置の冷却装置。4. The material supply unit of the cylinder is connected to the same material supply unit comprising a rubber supply unit for supplying a pellet-like rubber material and a compounding agent supply unit for supplying a powdery compounding agent. 6. The cooling device for the pin-type kneading continuous extruder according to any one of the items 1, 2 and 3.
JP2003018790A 2003-01-28 2003-01-28 Pin type kneading continuous extrusion equipment cooling device Expired - Fee Related JP4072820B2 (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006341488A (en) * 2005-06-09 2006-12-21 Mitsubishi Heavy Ind Ltd Twin-screw feeder, seating apparatus and kneading system using the feeder
CN102935669A (en) * 2012-10-19 2013-02-20 大连橡胶塑料机械股份有限公司 Cooling flow channel of engagement type rotor
WO2013137346A1 (en) * 2012-03-16 2013-09-19 住友化学株式会社 Extrusion-molding device and method for producing molded article using same
CN111347578A (en) * 2020-05-04 2020-06-30 朱纪南 Rubber processing temperature control stirring and kneading machine
CN113878844A (en) * 2021-09-28 2022-01-04 北京工商大学 Performance optimization's incongruous double screw extruder
CN114454456A (en) * 2022-02-14 2022-05-10 江西华缆科技有限公司 Cable extrusion device based on water circulation cooling

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006341488A (en) * 2005-06-09 2006-12-21 Mitsubishi Heavy Ind Ltd Twin-screw feeder, seating apparatus and kneading system using the feeder
WO2013137346A1 (en) * 2012-03-16 2013-09-19 住友化学株式会社 Extrusion-molding device and method for producing molded article using same
CN102935669A (en) * 2012-10-19 2013-02-20 大连橡胶塑料机械股份有限公司 Cooling flow channel of engagement type rotor
CN102935669B (en) * 2012-10-19 2016-04-06 大连橡胶塑料机械股份有限公司 The coolant flow channel of meshing rotor
CN111347578A (en) * 2020-05-04 2020-06-30 朱纪南 Rubber processing temperature control stirring and kneading machine
CN113878844A (en) * 2021-09-28 2022-01-04 北京工商大学 Performance optimization's incongruous double screw extruder
CN114454456A (en) * 2022-02-14 2022-05-10 江西华缆科技有限公司 Cable extrusion device based on water circulation cooling

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