JP2015227053A - 押出機用スクリュ並びに押出機および押出方法 - Google Patents
押出機用スクリュ並びに押出機および押出方法 Download PDFInfo
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- JP2015227053A JP2015227053A JP2015085953A JP2015085953A JP2015227053A JP 2015227053 A JP2015227053 A JP 2015227053A JP 2015085953 A JP2015085953 A JP 2015085953A JP 2015085953 A JP2015085953 A JP 2015085953A JP 2015227053 A JP2015227053 A JP 2015227053A
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- B29B7/00—Mixing; Kneading
- B29B7/30—Mixing; Kneading continuous, with mechanical mixing or kneading devices
- B29B7/34—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices
- B29B7/38—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B29B7/40—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with single shaft
- B29B7/42—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with single shaft with screw or helix
- B29B7/421—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with single shaft with screw or helix with screw and additionally other mixing elements on the same shaft, e.g. paddles, discs, bearings, rotor blades of the Banbury type
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B—PERFORMING OPERATIONS; TRANSPORTING
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Abstract
【解決手段】スクリュ本体11のうち混練部11cが設けられた部分には、搬送部22、障壁部23、通路37が、複数の個所に亘って設けられている。そのうちの少なくとも1つの箇所において、通路は、スクリュ本体の内部に設けられ、入口38と出口40を有する。入口は、障壁部によって搬送が制限されることで圧力が高められた原料が流入するように開口されている。通路は、入口から流入した原料が搬送部による搬送方向とは逆方向に流通するように構成されている。出口は、入口が開口された搬送部を外れた位置で、スクリュ本体の外周面に開口されている。
【選択図】図1
Description
図1および図2には、本実施形態に係る単軸押出機1の構成が示されている。単軸押出機1は、1本の押出機用スクリュ2と、このスクリュ2が回転可能に挿通されたシリンダ3を有するバレル4と、を備えている。
図2および図5に示すように、本実施形態に係る押出機用スクリュ2は、複数の搬送部22と、複数の障壁部23とが、軸方向(長手方向)に沿って交互に並んだスクリュ本体11(混練部11c)の内部に、複数の通路37が軸方向(長手方向)に沿って互いに間隔を存して設けられている。各通路37には、障壁部23によって搬送が制限された原料が流入する。各通路37において、原料は、搬送部22による搬送方向とは逆方向に流通する。かかるスクリュ構造により、原料にせん断作用と伸長作用とを連続して付与する機能を有するスクリュ本体11(混練部11c)を備えたスクリュ2が実現される。
上記した一実施形態において、図1、図2、図5には、通路本体39の両側が、入口38および出口40の底部38a,40aから外れた位置で、当該入口38および出口40に接続された通路37が示されている。しかし、通路本体39と、入口38および出口40との接続関係は、上記した一実施形態に限定されることは無く、以下のような接続関係も本発明の技術的範囲に含まれる。
11b…溶融混合部、11c…混練部、12…フライト、13…筒体、
13p…導入用筒体、14…回転軸、15…導入部、22…搬送部、23…障壁部、
24…吐出用搬送部、25,26…フライト、27…隙間、28…障壁用円環状体、
29…搬送路、37…通路、38…入口、39…通路本体、40…出口。
Claims (10)
- 供給された材料を連続的に搬送する移送部と、
搬送された前記材料を連続的に溶融および混合する溶融混合部と、
前記材料を溶融および混合することで得られた原料を連続的に混練する混練部と、を有し、
前記移送部、前記溶融混合部、前記混練部は、直線状の軸線を中心に回転するスクリュ本体に設けられているとともに、
前記スクリュ本体のうち前記混練部が設けられた部分には、原料を搬送する搬送部と、原料の搬送を制限する障壁部と、原料が流通する通路とが、複数の個所に亘って設けられており、
そのうちの少なくとも1つの箇所において、
前記通路は、前記スクリュ本体の内部に設けられ、入口および出口を有し、
前記入口は、前記障壁部によって搬送が制限されることで圧力が高められた原料が流入するように、前記搬送部における前記スクリュ本体の外周面に開口され、
前記通路は、前記入口から流入した原料が、前記出口に向かって、前記搬送部による搬送方向とは逆方向に流通するように構成され、
前記出口は、前記入口が開口された前記搬送部を外れた位置で、前記スクリュ本体の外周面に開口されている押出機用スクリュ。 - 前記スクリュ本体のうち前記混練部が設けられた部分は、その全長に亘って、その外径が一定値となるように構成されている請求項1に記載の押出機用スクリュ。
- 前記通路の口径は、当該通路における前記入口の口径と同一、あるいは、小さく設定されている請求項1に記載の押出機用スクリュ。
- 前記通路の口径は、1mm以上かつ6mm未満に設定されている請求項1に記載の押出機用スクリュ。
- 前記スクリュ本体は、回転装置に連結される基端から先端に亘り軸方向に沿って延出しており、
前記搬送部には、前記スクリュ本体の外周面に沿って螺旋状にねじれたフライトが設けられ、
前記フライトは、前記スクリュ本体の基端から先端に向かって、前記基端の側から見た場合の当該スクリュ本体の回転方向と同方向にねじれている請求項1ないし4のいずれか1項に記載の押出機用スクリュ。 - 請求項1ないし5のいずれか1項に記載の押出機用スクリュを備えた押出機であって、
前記押出機用スクリュが回転可能に挿通されたシリンダを有するバレルと、
前記バレルに設けられ、前記シリンダ内に材料を供給する供給口と、
前記バレルに設けられ、前記スクリュによって生成された混練物が連続的に押し出される吐出口と、を備えている押出機。 - 請求項1ないし5のいずれか1項に記載の押出機用スクリュで原料を混練し、その混練物を連続的に生成して押し出す押出方法であって、
前記混練物を連続的に押し出す間に、前記混練部において、前記スクリュ本体の外周面に沿って搬送された原料は、前記通路を流通した後、前記スクリュの外周面に帰還する押出方法。 - 前記混練部において、
前記スクリュ本体の外周面に沿って搬送された原料は、当該混練部に設けられた前記障壁部によって搬送が制限されることで、その圧力が高められ、
当該圧力が高められた原料が、前記入口から前記通路に流入する請求項7に記載の押出方法。 - 前記混練部において、
前記入口から前記通路に流入した原料は、当該通路内を前記搬送部による搬送方向とは逆方向に流通する請求項8に記載の押出方法。 - 前記混練部において、
前記通路を通過した原料は、前記入口が開口された前記搬送部を外れた位置で、前記出口から前記スクリュ本体の外周面に流出する請求項9に記載の押出方法。
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CN105934324A (zh) | 2016-09-07 |
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US11110638B2 (en) | 2021-09-07 |
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