JP5039796B2 - パイプソケットを備えて成るプラスチック複合パイプの連続製造のための方法と装置 - Google Patents
パイプソケットを備えて成るプラスチック複合パイプの連続製造のための方法と装置 Download PDFInfo
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Description
少なくとも一対のシェル半体には、ソケット凹部が設けられ、
内側から外側へ作用する相対的な超過圧力のための生成のための手段が設けられ、
第一押出機のダイヘッドが、成形経路の上流側に配置され、
ダイヘッドには、外側管の押出しのための外側ダイが設けられ、搬送方向におけるその下流側には、内側管の押出しのための内側ダイが設けられ、搬送方向で見た際のその下流側端部に、寸法規制心棒乃至調整心棒(calibrating mandrel)が設けられ、
内側ダイは、第一押出機に接続され、
外側ダイに接続される第二押出機が設けられ、
制御システムが第一押出機と第二押出機との駆動モータを動作させるために設けられる。
2 第二押出機
3 駆動モータ
3’ 駆動モータ
4 搬送方向
8 ダイヘッド
10 複合パイプ
12 シェル半体
12’ シェル半体
16 成形経路
18 長手方向中央軸線
21 内側ダイ
22 外側ダイ
25 寸法規制心棒
30 ガス間隙
32 環状型凹部
37 外側管
38 横溝
39 内側管
41 パイプソケット
42 ソケット凹部
44 移行部分
45 型部
46 挿入端部
50 制御システム
Claims (10)
- 滑らかな内側管と、この内側管と共に溶接され且つ横溝(38)が設けられる外側管とから成り、パイプソケット(41)を有するプラスチック複合パイプ(10)の連続製造方法にして、
‐環状の型凹部(32)を備え、且つ長手方向中央軸線(18)を有する型を形成すべく、成形経路(16)で一対に組み合わされるシェル半体(12、12’)が、搬送方向(4)に循環案内され、
‐少なくとも一対のシェル半体(12、12’)には、実質的に円筒状壁部(43)を有するソケット凹部(42)が設けられ、
‐内側から外側に作用する相対的な超過圧力が作り出され、
‐駆動モータ(3)を備えて成る第一押出機(1)のダイヘッド(8)が、前記成形経路(16)の上流側に配置され、
‐前記ダイヘッド(8)には、外側ダイ(22)と、前記搬送方向(4)で下流側に配置される内側ダイ(21)と、前記搬送方向(4)で見たときにその下流側端部に寸法規制心棒(25)とが設けられ、
‐前記内側ダイ(21)は、前記第一押出機(1)に接続され、
‐前記外側ダイ(22)に接続される、駆動モータ(3’)を有した第二押出機(2)が設けられ、
‐前記内側ダイ(21)からプラスチック溶融物の内側管(39)が押出され、
‐前記外側ダイ(22)からプラスチック溶融物の外側管(37)が押出される、複合パイプ連続製造方法において、
‐前記駆動モータ(3、3’)が作動させられて、
前記第一押出機(1)の押出速度n1が、滑らかな内側管と横溝(38)を備えた外側管とから成る複合パイプの製造の際の速度n1,1から、ソケット凹部(42)の拡張される移行部分(44)が前記内側ダイ(21)を横断している間に、速度n1,2に増加させられるように、
及び、
その後、ソケット凹部(42)の実質的に円筒状壁部(43)が内側ダイ(21)を横断している間に、前記第一押出機(1)の押出速度が、速度n1,3に減少させられ、n1,2>n1,3>n1,1が当てはまることを特徴とする、複合パイプ連続製造方法。 - ソケット凹部(42)の外側拡張型部分(45)がソケット凹部(42)の挿入端部(46)を形成するために前記内側ダイ(21)を横断して案内されている間に、前記第一押出機(1)の押出速度n1が、押出速度n1,4に増加させられ、n1,2>n1,4>n1,3>n1,1が当てはまることを特徴とする請求項1に記載の方法。
- 滑らかな内側管と、この内側管と共に溶接され且つ横溝(38)が設けられる外側管とから成る複合パイプの製造の際に、前記移行部分(44)が前記外側ダイ(22)を横断して案内される間に、前記第二押出機(2)の押出速度n2が、速度n2,1から速度n2,2に減少させられることを特徴とする請求項1又は2に記載の方法。
- 前記第二押出機(2)の押出速度n2が、滑らかな内側管と、この内側管と共に溶接され且つ横溝(38)が設けられる外側管とから成る複合パイプの製造の際に、速度n2,1から速度n2,2に変更され、その際、n2,2>n2,1が当てはまること、及び、
その後、前記第二押出機(2)の押出速度n2が、速度n2,3に変更され、n2,3<n2,1が当てはまること、
を特徴とする請求項1又は2に記載の方法。 - 追加的なガス間隙(30)が内側ダイ(21)と寸法規制心棒(25)との間にもたらされ、且つ、内側管(39)の方に通じ、種々の圧力の圧縮エアーが前記ガス間隙(30)に適用可能であること、及び、
前記圧力が、滑らかな壁部の内側管を形成している間の部分真空p1から、前記移行部分(44)が内側ダイ(21)を横断している間の圧力p2に増加させられ、且つ、その後、前記圧力が、ソケット凹部(42)が内側ダイ(21)を横断している間の圧力p3に減少させられ、p1<p3<p2が当てはまること、
を特徴とする請求項1〜3のいずれか一項に記載の方法。 - 滑らかな内側管と、この内側管と共に溶接され且つ横溝(38)が設けられる外側管とから成り、パイプソケット(41)を有するプラスチック複合パイプ(10)の連続製造のための装置にして、
‐環状の型凹部(32)を備え、且つ長手方向中央軸線(18)を有する型を形成すべく、成形経路(16)で一対に組み合わされるシェル半体(12、12’)が、搬送方向(4)に循環案内され、
‐少なくとも一対のシェル半体(12、12’)には、実質的に円筒状壁部(43)を有するソケット凹部(42)が設けられ、
‐内側から外側へ作用する相対的な超過圧力の生成のための手段が設けられ、
‐第一押出機(1)のダイヘッド(8)が、前記成形経路(16)の上流側に配置され、
‐前記ダイヘッド(8)には、外側管(37)の押出しのための外側ダイ(22)と、内側管(39)の押出しのための、前記搬送方向(4)で下流側に配置される内側ダイ(21)と、前記搬送方向(4)で見たときにその下流側端部に寸法規制心棒(25)と、が設けられ、
‐前記内側ダイ(21)は、前記第一押出機(1)に接続され、
‐前記外側ダイ(22)に接続される第二押出機(2)が設けられ、
‐前記第一押出機(1)と前記第二押出機(2)との駆動モータ(3、3’)の作動のために、制御システム(50)が設けられる、複合パイプ連続製造装置において、
前記第一押出機(1)の押出速度n1が、滑らかな内側管と横溝(38)を備える外側管とから成る複合パイプの製造の際の速度n1,1から、ソケット凹部(42)の拡張した移行部分(44)が前記内側ダイ(21)を横断している間に、速度n2,1に増加させられるように、且つ、その後、ソケット凹部(42)の実質的に円筒状壁部(43)が内側ダイ(21)を横断している間に、前記第一押出機(1)の押出速度が、速度n1,3に減少させられ、n1,2>n1,3>n1,1が当てはまるように、前記制御システム(50)が構成されることを特徴とする、複合パイプ連続製造装置。 - ソケット凹部(42)の外側拡張型部(45)がソケット凹部(42)の挿入端部(46)を形成するために前記内側ダイ(21)を横断して案内されている間に、前記第一押出機(1)の押出速度n1が押出速度n1,4に増加させられるように、制御システム(50)が構成され、n1,2>n1,4>n1,3>n1,1が当てはまることを特徴とする請求項6に記載の装置。
- 滑らかな内側管と、この内側管と共に溶接され且つ横溝(38)が設けられる外側管とから成る複合パイプの製造の際に、前記移行部分(44)が前記外側ダイ(22)を横断して案内される間に、前記第二押出機(2)の押出速度n2が、速度n2,1から速度n2,2に減少させられるように、制御システム(50)が構成されていることを特徴とする請求項6又は7に記載の装置。
- 前記第二押出機(2)の押出速度n2が、滑らかな内側管と、この内側管と共に溶接され且つ横溝(38)が設けられる外側管とから成る複合パイプの製造の際に、速度n2,1から速度n2,2に変更され、その際、n2,2>n2,1が当てはまるように、制御システム(50)が構成されること、及び、
その後、前記第二押出機(2)の押出速度n2が、速度n2,3に変更され、n2,3<n2,1が当てはまること、
を特徴とする請求項6又は7に記載の装置。 - 追加的なガス間隙(30)が、内側ダイ(21)と寸法規制心棒(25)との間にもたらされ、種々の圧力の圧縮エアーがガス間隙(30)に適用可能であること、及び、
前記圧力が、滑らかな壁部の内側管を形成している間の部分真空p1から、前記移行部分(44)が内側ダイ(21)を横断している間の圧力p2に増加させられ、且つ、その後、前記圧力が、ソケット凹部(42)が内側ダイ(21)を横断している間の圧力p3に減少させられ、p1<p3<p2が当てはまるように、制御システム(50)が構成されること、
を特徴とする請求項6〜8のいずれか一項に記載の装置。
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