JP2020179679A - プリフォームに最適なネック部輪郭を作成するための方法及び装置 - Google Patents
プリフォームに最適なネック部輪郭を作成するための方法及び装置 Download PDFInfo
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Abstract
Description
2 搬送リングの下方に最適化された薄壁のネック部領域であって、少なくとも2つの軸方向に支持されたウェブを有しているネック部領域を備えた、プリフォーム
3 プリフォームの搬送リング
4 支持ボルト
5 型押し部材
6 背圧バネ
7 鐘状の押し込み部材
8 冷却スリーブ
9 ネック部/搬送リング下の減少された壁厚
10 押圧バネ
11 ボトム支持部
12 射出成形のための通常の壁厚
13 押圧部材(スライダー)
14 溝/ウェブ
15 プリフォームネック部/ねじ部領域
16 プリフォームシャフト
17 成形機(型器具)
18 取り出しアーム(取り出し把持部)
2 搬送リングの下方に最適化された薄壁のネック部領域であって、少なくとも2つの軸方向に支持されたウェブを有しているネック部領域を備えた、プリフォーム
3 プリフォームの搬送リング
4 支持ボルト
5 型押し部材
6 背圧バネ
7 鐘状の押し込み部材
8 冷却スリーブ
9 ネック部/搬送リング下の減少された壁厚
10 押圧バネ
11 ボトム支持部
12 射出成形のための通常の壁厚
13 押圧部材(スライダー)
14 流路/ウェブ
15 プリフォームネック部/ねじ部領域
16 プリフォームシャフト
17 成形機(型器具)
18 取り出しアーム(取り出し把持部)
Claims (21)
- 後続の簡潔化されたブロープロセスのために、ネジ部領域或いは搬送リング(3)の下方に改良されたネック部形状を備えたプリフォーム(2)を製造するための方法にして、少なくとも1つの熱可塑性材料からなる完成まで製造された前記プリフォーム(2)が、ネジ部下方のネック部領域において、ねじ部自体の壁厚よりも、基本的に薄い壁厚を有しており、また、前記プリフォーム(2)がブロー成形された容器へ変形するために備えられている方法において、
前記プリフォーム(2)が射出成形されているが、薄壁領域に関わらず保持圧力は増加された壁厚を有している少なくとも2つの溝を用いて維持され得ること、又は、成形機に組み込まれた少なくとも2つの押圧部材が、キャビティの充填プロセス後及び特定のプロセス時間の後、このより薄い壁厚をもたらすこと、又は、最初の可能な限り短時間の冷却の後に前記プリフォーム(2)の外表面が硬化した後で成形機が開かれ、前記プリフォーム(2)が取り出しアーム及び前記取り出しアームの冷却スリーブ(8)を用いて開かれた成形機から取り上げられ、前記冷却スリーブ(8)が、型押しプロセスの前に接触冷却によりプリフォームシャフトを冷却するが、前記ネジ部下方の前記ネック部は冷却せず、従って再度可塑変形可能なこの領域が機械的に型押し部材(5)を用いて更なる加工にとって必要な再現精度に応じて、合成物質材料の型押しプロセスによって、引っ張り、押圧、及び押し込みにより、変形されること、及び、複数の前記型押し部材の輪郭が支持ボルト(4)との組み合わせで、これらの輪郭の大部分が開いたプリフォーム(2)での変形プロセスの後に再現可能に写し取られるように、形成されていること
を特徴とする方法。 - 請求項1に記載の方法において、
当該方法により、全ての前記プリフォーム(2)が、それらの製造時にネック部下方の薄壁領域に、少なくとも2つのウェブ或いは溝(14)を有していること
を特徴とする方法。 - 請求項1又は2に記載の方法において、
前記溝(14)が射出成形処理のために、保持圧力を維持するため前記合成物質が前記溝(14)内では、プリフォームネック部内の前記合成物質よりも早くは硬化しないように、構成されていること
を特徴とする方法。 - 請求項1に記載の方法において、
押圧処理の際、材料の押し退けが、時間的に自由に決定可能でありまた同時に保持圧力のためにも利用され、また、複数の押圧部材(13)がそれらの分離部分にて形状について予め決定されたウェブ(14)を再現可能に作成すること
を特徴とする方法。 - 請求項1に記載の方法において、
前記冷却スリーブ(8)内での前記型押しプロセスが合成物質材料を軸方向に押し退け、その結果、前記プリフォーム(2)の延伸が可能であること
を特徴とする方法。 - 請求項5に記載の方法において、
型押しで形状を付与する領域内で、前記プリフォーム(2)に90°Cから150°Cの間の温度範囲が生じること
を特徴とする方法。 - 請求項1又は2に記載の方法において、
形状について特定された輪郭を備えた任意の数量及びサイズの型押し部材(5)が、可塑性の塊りを引っ張ること、押圧すること、及び、押し込むことによって、ネック部の可塑性の合成物質を、2つの輪郭部の間の体積が合成物質で満たされるまで変形し、それによりプリフォームネック部の形状及びその壁厚が繰り返し正確に決定されること
を特徴とする方法。 - 請求項1から7のいずれか一項に記載の方法において、
前記型押しプロセスが、プロセスのどの部分においても、時間的に自由に決定可能であること
を特徴とする方法。 - 請求項1から8のいずれか一項に記載の方法において、
複数個取りキャビティの使用する際に、同等のプロセスを保証するために、それぞれのプリフォーム(2)用の機械的なバネ又は空圧的なバネによって、型押し力が個々のキャビティについて個別に調整可能であること
を特徴とする方法。 - 請求項1から9のいずれか一項に記載の方法において、
型押しプロセスに影響を与えるために、前記型押し部材(5)が調温又は冷却され得ること
を特徴とする方法。 - 請求項1から10のいずれか一項に記載の方法において、
前記型押し部材(5)が、材料の引っ張り、押圧、及び、押し込みにより、ボトル形状の特別な要求のためにプリフォームネック部をプリ成形すること
を特徴とする方法。 - 請求項1から11のいずれか一項に記載の方法において、
前記プリフォームネック部内の熱収支の安定化のために、型押しプロセスを実行する前に1秒から20秒の待機時間が設けられていること
を特徴とする方法。 - ネック部の下方にブロープロセスにとって最適な形状を有しているプリフォーム(2)を製造するための装置にして、完成まで製造された前記プリフォーム(2)が、ネジ部の下方の領域において、ねじ部自体での壁厚よりも、明らかに薄い壁厚を有している装置において、
圧力下で可塑性の塊りを閉じられた成形機のキャビティ内へ注入するために、射出成形装置がこの合成物質原材料を可塑化させること、1個取り又は複数個取りの成形キャビティを備える成形機が、これらのプリフォーム(2)の完成までの形状付与を担い、その際当該成型機が、減少した壁厚に関わらずネック部での保持圧力の要求を保障するために、特別な溝又は押圧部材(13)を使用可能であること、又は、前記成型機がプリフォーム形状の初めの形状付与を担うこと、取り出しアームが、プリフォーム(2)を取り出すために、冷却された冷却スリーブ(8)によって単数又は複数のキャビティを備えられていること、及び、内側の冷却スリーブ形状部が、プリフォームシャフトに接触冷却を提供するが、プリフォームネック部の領域には接触冷却を提供せず、また、型押し装置を使用可能であること、当該型押し装置が半径方向に浮動状態で支持される複数の型押し部材(5)を有しており、当該型押し部材(5)は軸方向の力によりテーパ部を介してこの力を、軸に対して垂直に転向しまた従って型押しプロセスのために著しく強化すること、当該型押しプロセスの課題はネジ部位の下方のネック部を引っ張り、押圧、及び、押し込みによって変形することであり、当該ネック部は、型押し部材(5)及び支持ボルト(4)の間の中空空間によって明確に特定されておりまた従って高い再現精度で前記ネック部の壁厚及び輪郭を形成すること
を特徴とする装置。 - 請求項13に記載の装置において、
前記押圧部材が、場合によっては閉鎖圧下でも、成形機内で移動され得ること
を特徴とする装置。 - 請求項13又は14に記載の装置において、
前記型押し体が、硬質でありまた熱伝導性の材料(例えば鋼)から作製されていること
を特徴とする装置。 - 請求項13から15のいずれか一項に記載の装置において、
前記型押し体が冷却又は調温され得ること
を特徴とする装置。 - 請求項13から16のいずれか一項に記載の装置において、
前記冷却スリーブ(8)が流体冷却されていること
を特徴とする装置。 - 請求項13から17のいずれか一項に記載の装置において、
前記型押し部材(5)が弾性的に支持されておりまた弾性力を個別に決定することが可能であること
を特徴とする装置。 - 請求項13から18のいずれか一項に記載の装置において、
前記型押し部材(5)が、均一な力の変換部として利用されるテーパ部にあること
を特徴とする装置。 - 請求項13から19のいずれか一項に記載の装置において、
型押しユニットを備えるそれぞれの前記冷却スリーブ(8)が、ストローク長さ及び力を予め選択可能な個別の軸方向駆動部を有していること
を特徴とする装置。 - 請求項13から20のいずれか一項に記載の装置において、
前記プリフォーム(2)が必ずしも支持リング(3)を有していなくてもよいこと
を特徴とする装置。
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RU2017109523A (ru) | 2018-10-24 |
BR112017005298A2 (pt) | 2017-12-12 |
RU2017109523A3 (ja) | 2019-04-08 |
KR102394752B1 (ko) | 2022-05-04 |
KR20170077114A (ko) | 2017-07-05 |
BR112017005298B1 (pt) | 2022-03-22 |
CA2961964A1 (en) | 2016-03-31 |
EP3197655A1 (de) | 2017-08-02 |
US20200307045A1 (en) | 2020-10-01 |
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RU2721113C2 (ru) | 2020-05-15 |
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US11325288B2 (en) | 2022-05-10 |
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