JP5674787B2 - 容器をブロー成形するための方法および装置 - Google Patents
容器をブロー成形するための方法および装置 Download PDFInfo
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- G—PHYSICS
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Description
本発明は、さらに、熱可塑性材料から容器をブロー成形するためのブロー成形装置であって、パリソンの搬送経路に沿って配置される少なくとも1つの加熱区間と、ブロー成形型を備えた少なくとも1つのブローステーションと、制御装置とを有し、該制御装置がブロー成形工程を特徴づける少なくとも1つのパラメータを測定技術で検出するための少なくとも1つのセンサと接続されている前記ブロー成形装置にも関わる。
本発明の他の課題は、冒頭で述べた種類の装置を、簡潔な構成で且つ優れた生産品質で高スループットが可能であるように構成することである。
Claims (14)
- 熱可塑性材料から成るパリソンを、加熱区間の領域にある搬送経路に沿って熱コンディショニングした後にブロー成形型内部でブロー圧を作用させることによって容器に成形し、ブロー成形工程を特徴づける少なくとも1つのパラメータを測定技術で検出して制御装置に供給し、該制御装置がブロー成形工程を制御する少なくとも1つのパラメータを変化させるために少なくとも1つの調整要素に作用するようにした、容器をブロー成形するための方法において、
前記制御装置(51)により、シミュレーションモデル(48)を使用して、ブロー成形工程を特徴づける測定されたパラメータをベースにして、ブロー成形を終了した前記容器(2)の少なくとも1つの特性を算出して目標値と比較すること、
前記目標値と測定値との間にずれがあった場合には、ブロー成形工程を制御する前記パラメータを、ずれが最小になるように変化させること、
を特徴とする方法。 - ブロー成形工程を特徴づける少なくとも1つのパラメータを、パリソン温度、パリソン(1)内部での温度分布、ブロー圧推移、ブローガス体積流、延伸推移、材料特性、パリソン(1)内部での材料分布、ブロー成形される容器(2)内部での材料分布、容器輪郭、周囲温度のグループから選定して評価することを特徴とする、請求項1に記載の方法。
- ブロー成形される容器(2)の特性をシミュレーションモデル(48)によってシミュレーションを実施する場合、ブロー成形される容器(2)の少なくとも1つのパラメータを、ブロー成形される容器(2)内部での材料分布、加圧負荷のもとでの容器輪郭、容器(2)の積み重ね能力、容器(2)の把持安定性、容器(2)の加圧挙動のグループから選定してシミュレートすることを特徴とする、請求項1または2に記載の方法。
- ブロー成形される容器(2)の少なくとも1つのシミュレート値を、実際にブロー成形した容器(2)の特性と比較することを特徴とする、請求項1から3までのいずれか一項に記載の方法。
- ブロー成形される容器(2)の少なくとも1つのパラメータを測定技術で検出することを特徴とする、請求項1から4までのいずれか一項に記載の方法。
- シミュレーションモデル(48)を閉じた制御回路内部で使用することを特徴とする、請求項1から5までのいずれか一項に記載の方法。
- シミュレーションモデル(48)をカスケード制御の一部として使用することを特徴とする、請求項6に記載の方法。
- 熱可塑性材料から容器をブロー成形するためのブロー成形装置であって、パリソンの搬送経路に沿って配置される少なくとも1つの加熱区間と、ブロー成形型を備えた少なくとも1つのブローステーションと、制御装置とを有し、該制御装置がブロー成形工程を特徴づける少なくとも1つのパラメータを測定技術で検出するための少なくとも1つのセンサと接続されている前記ブロー成形装置において、
前記制御装置がシミュレーションモデル(48)を有し、該シミュレーションモデル(48)が、ブロー成形工程を特徴づける測定されたパラメータをベースにして、ブロー成形を終了した容器(2)の少なくとも1つの特性を算出し、目標値と比較すること、
前記目標値と測定値との間にずれがあった場合には、ずれが最小になるように、ブロー成形工程を制御する前記パラメータを調整要素によって変更可能であること、
を特徴とするブロー成形装置。 - 前記シミュレーションモデル(48)が、パリソン温度、パリソン(1)内部での温度分布、ブロー圧推移、ブローガス体積流、延伸推移、材料特性、パリソン(1)内部での材料分布、ブロー成形される容器(2)内部での材料分布、容器輪郭、周囲温度のグループから選定してブロー成形工程を特徴づける少なくとも1つの前記パラメータを評価するように構成されていることを特徴とする、請求項8に記載のブロー成形装置。
- 前記シミュレーションモデル(48)が、ブロー成形される容器(2)内部での材料分布、加圧負荷のもとでの容器輪郭、容器(2)の積み重ね能力、容器(2)の把持安定性、容器(2)の加圧挙動のグループから選定してブロー成形される容器(2)の少なくとも1つのパラメータを評価するように構成されていることを特徴とする、請求項8または9に記載のブロー成形装置。
- 前記シミュレーションモデル(48)が、ブロー成形される容器(2)のシミュレーション特性を実際にブロー成形された容器(2)の特性と比較するための比較装置を有していることを特徴とする、請求項8から10までのいずれか一項に記載のブロー成形装置。
- 前記シミュレーションモデル(48)に、ブロー成形される容器(2)の少なくとも1つのパラメータを測定技術で検出するための少なくとも1つのセンサが接続されていることを特徴とする、請求項8から11までのいずれか一項に記載のブロー成形装置。
- 前記シミュレーションモデル(48)が制御回路の内部に配置されていることを特徴とする、請求項8から12までのいずれか一項に記載のブロー成形装置。
- 前記制御回路がカスケード制御部として構成されていることを特徴とする、請求項13に記載のブロー成形装置。
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