JP2017222156A - 様々な角度及び深さの溝を有する可塑化装置用スクリュ - Google Patents
様々な角度及び深さの溝を有する可塑化装置用スクリュ Download PDFInfo
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- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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- 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
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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
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- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
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Abstract
Description
Claims (22)
- 可塑化装置用のスクリュであって、
前記スクリュはバレルの中で長手方向の軸の周りを回転できるように支持されており、前記スクリュは、コアと前記スクリュの長さに沿って延びる少なくとも一つのらせん状フライトを有し、前記らせん状フライトは前記長手方向の軸に対してらせん角を定義すると共に、90度より小さい第一のらせん角の第一のらせん状経路を定義し、前記らせん状フライトはらせん状通路を定義し、
前記スクリュの一つの長手部分は少なくとも一つの閉端部を有する複数のアドバンシング溝を有し、前記複数のアドバンシング溝は前記スクリュの前記らせん状通路におけるスクリュコアに不連続にらせん状に彫り込まれて配列されており、前記複数のアドバンシング溝は材料がらせん状通路を通って運搬されるように、前記材料を受け入るのに必要な大きさになっており、
前記長手部分はさらに、少なくとも一つの前記アドバンシング溝を横切る複数の不連続なクロスカット溝を有し、
前記第一のらせん角より大きく90度より小さい第二のらせん角を有する少なくとも一つのクロスカット溝、及び、概ね90度の第三のらせん角を有する少なくとも一つの他のクロスカット溝、の少なくとも一方を有する、スクリュ。 - 材料が逆流でき前記長手部分を循環できるように、前記クロスカット溝が前記らせん状フライトを一回だけ横断する請求項1記載のスクリュ。
- 前記複数のアドバンシング溝の少なくとも一つがアドバンシング溝深さテーパを有するか、又は前記複数のクロスカット溝の少なくとも一つがクロスカット溝深さテーパを有する請求項1記載のスクリュ。
- 前記複数のアドバンシング溝の少なくとも一つのアドバンシング溝のアドバンシング溝深さテーパは、他の前記複数のアドバンシング溝のアドバンシング溝深さテーパとは異なる請求項3記載のスクリュ。
- 前記複数のクロスカット溝の少なくとも一つのクロスカット溝のクロスカット溝深さテーパは、他の前記複数のクロスカット溝のクロスカット溝深さテーパとは異なる請求項3記載のスクリュ。
- 前記複数のクロスカット溝の少なくとも一つのクロスカット溝のクロスカット溝深さテーパは、他の前記複数のアドバンシング溝のアドバンシング溝深さテーパとは異なる請求項3記載のスクリュ。
- 少なくとも一つの前記クロスカット溝は、前記クロスカット溝における流れの方向において、前記クロスカット溝の長手方向の軸に沿って増加する深さテーパを有する請求項3記載のスクリュ。
- 少なくとも一つの前記クロスカット溝は、前記クロスカット溝における流れの方向において、前記クロスカット溝の長手方向の軸に沿って減少する深さテーパを有する請求項3記載のスクリュ。
- 少なくとも一つの前記アドバンシング溝は、前記アドバンシング溝における流れの方向において、前記アドバンシング溝の長手方向の軸に沿って増加する深さテーパを有する請求項3記載のスクリュ。
- 少なくとも一つの前記アドバンシング溝は、前記アドバンシング溝における流れの方向において、前記アドバンシング溝の長手方向の軸に沿って減少する深さテーパを有する請求項3記載のスクリュ。
- 可塑化装置用のスクリュであって、
前記スクリュはバレルの中で長手方向の軸の周りを回転できるように支持されており、前記スクリュは、コアと前記スクリュの長さに沿って延びる少なくとも一つのらせん状フライトを有し、前記らせん状フライトは前記長手方向の軸に対してらせん角を定義すると共に、90度より小さい第一のらせん角の第一のらせん状経路を定義し、前記らせん状フライトはらせん状通路を定義し、
前記スクリュの一つの長手部分は少なくとも一つの閉端部を有する複数のアドバンシング溝を有し、前記複数のアドバンシング溝は前記スクリュの前記らせん状通路におけるスクリュコアに不連続にらせん状に彫り込まれて配列されており、前記複数のアドバンシング溝は材料がらせん状通路を通って運搬されるように、前記材料を受け入るのに必要な大きさになっており、
前記長手部分はさらに、前記複数のアドバンシング溝の内のいくつかを横切る複数の不連続なクロスカット溝を有し、
アドバンシング溝深さテーパを有する少なくとも一つの前記複数のアドバンシング溝、及び、クロスカット溝深さテーパを有する少なくとも一つの前記複数のクロスカット溝、の少なくとも一方を有する、スクリュ。 - 前記複数のアドバンシング溝の少なくとも一つのアドバンシング溝のアドバンシング溝深さテーパは、他の前記複数のアドバンシング溝のアドバンシング溝深さテーパとは異なる請求項11記載のスクリュ。
- 前記複数のクロスカット溝の少なくとも一つのクロスカット溝のクロスカット溝深さテーパは、他の前記複数のクロスカット溝のクロスカット溝深さテーパとは異なる請求項11記載のスクリュ。
- 前記複数のクロスカット溝の少なくとも一つのクロスカット溝のクロスカット溝深さテーパは、他の前記複数のアドバンシング溝のアドバンシング溝深さテーパとは異なる請求項11記載のスクリュ。
- 少なくとも一つの前記クロスカット溝は、前記クロスカット溝における流れの方向において、前記クロスカット溝の長手方向の軸に沿って増加する深さテーパを有する請求項11記載のスクリュ。
- 少なくとも一つの前記クロスカット溝は、前記クロスカット溝における流れの方向において、前記クロスカット溝の長手方向の軸に沿って減少する深さテーパを有する請求項11記載のスクリュ。
- 少なくとも一つの前記アドバンシング溝は、前記アドバンシング溝における流れの方向において、前記アドバンシング溝の長手方向の軸に沿って増加する深さテーパを有する請求項11記載のスクリュ。
- 少なくとも一つの前記アドバンシング溝は、前記アドバンシング溝における流れの方向において、前記アドバンシング溝の長手方向の軸に沿って減少する深さテーパを有する請求項11記載のスクリュ。
- 可塑化装置用のスクリュであって、
前記スクリュはバレルの中で長手方向の軸の周りを回転できるように支持されており、前記スクリュは、コアと前記スクリュの長さに沿って延びる少なくとも一つのらせん状フライトを有し、前記らせん状フライトは前記長手方向の軸に対してらせん角を定義すると共に、90度より小さい第一のらせん角の第一のらせん状経路を定義し、前記らせん状フライトはらせん状通路を定義し、
前記スクリュの一つの長手部分は少なくとも一つの閉端部を有する複数のアドバンシング溝を有し、前記複数のアドバンシング溝は前記スクリュの前記らせん状通路におけるスクリュコアに不連続にらせん状に彫り込まれて配列されており、前記複数のアドバンシング溝は材料がらせん状通路を通って運搬されるように、前記材料を受け入るのに必要な大きさになっており、
前記長手部分はさらに、少なくとも一つの前記アドバンシング溝を横切る複数の不連続なクロスカット溝を有し、
第二のらせん角を有する少なくとも一つの第一のクロスカット溝と、第三のらせん角を有する少なくとも一つの第二のクロスカット溝と、を有し、前記第一のらせん角、前記第二のらせん角及び第三のらせん角は互いに異なる大きさである、スクリュ。 - 前記第一のらせん角、前記第二のらせん角及び前記第三のらせん角とは異なる第四のらせん角を有する、少なくとも一つの第三のクロスカット溝を有する請求項19記載のスクリュ。
- 前記少なくとも一つの第一のクロスカット溝は前記少なくとも一つの第二のクロスカット溝から軸上で下流にある請求項19記載のスクリュ。
- 可塑化装置用のスクリュであって、
前記スクリュはバレルの中で長手方向の軸の周りを回転できるように支持されており、前記スクリュは、コアと前記スクリュの長さに沿って延びる少なくとも一つのらせん状フライトを有し、前記らせん状フライトは半径方向で最も外側のフライト表面を有し、前記らせん状フライトは前記長手方向の軸に対してらせん角を定義すると共に、90度より小さい第一のらせん角の第一のらせん状経路を定義し、前記らせん状フライトはらせん状通路を定義し、
前記スクリュの一つの長手部分は少なくとも一つの閉端部を有する複数のアドバンシング溝を有し、前記複数のアドバンシング溝は前記スクリュの前記らせん状通路におけるスクリュコアに不連続にらせん状に彫り込まれて配列されており、前記複数のアドバンシング溝は材料がらせん状通路を通って運搬されるように、前記材料を受け入るのに必要な大きさになっており、
前記長手部分はさらに、前記半径方向で最も外側のフライト表面より半径方向で内側に位置する少なくとも一つのアンダーカット表面を有し、前記アンダーカット表面は、前記複数のアドバンシング溝と平行な長手方向、及び前記長手方向を横切る方向の少なくとも一方に沿って変化する深さを有する、スクリュ。
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