JP5589328B2 - 射出成形装置のスクリュ - Google Patents
射出成形装置のスクリュ Download PDFInfo
- Publication number
- JP5589328B2 JP5589328B2 JP2009216558A JP2009216558A JP5589328B2 JP 5589328 B2 JP5589328 B2 JP 5589328B2 JP 2009216558 A JP2009216558 A JP 2009216558A JP 2009216558 A JP2009216558 A JP 2009216558A JP 5589328 B2 JP5589328 B2 JP 5589328B2
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- Prior art keywords
- screw
- injection molding
- tip
- molding apparatus
- resin
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/46—Means for plasticising or homogenising the moulding material or forcing it into the mould
- B29C45/47—Means for plasticising or homogenising the moulding material or forcing it into the mould using screws
- B29C45/50—Axially movable screw
- B29C45/52—Non-return devices
- B29C2045/528—Mixing means forming part of or in close proximity to the non-return valve
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- Injection Moulding Of Plastics Or The Like (AREA)
Description
さらに、樹脂の滞留を無くすことができるので、樹脂替性や色替性が向上する。
以下、図1及び2に従って説明する。
シート13の外周部にはスクリュ本体31のスクリュ溝と逆方向に傾斜した複数の溝33と複数の隔壁34とにより形成された撹拌体32を設けた構成となっている。なお、この図はスクリュが回転して溶融樹脂をスクリュ先端に送り出している計量工程の状態を示している。
スクリュ本体31の溝内の溶融樹脂はスクリュフライトに沿って層流となって流動し、スクリュ先端部において隔壁34に流れを阻まれ、傾斜角に沿って流れ方向と流速が変えられる。そして、隔壁34に衝突した溶融樹脂は溝33内でスクリュ先端と逆方向の渦流を形成しながらスクリュ先端側に送り出される構成となっている。
13 シート
14 スクリュヘッド
30、40 射出成形装置のスクリュ
31、41 スクリュ本体
32 撹拌体
33 溝
34 隔壁
θ 撹拌体とスクリュフライトとの角度
a 溝の断面積
Claims (1)
- 先端部に逆流防止機構を有し、基部から供給部、圧縮部、計量部で構成される射出成形装置のスクリュにおいて、スクリュ本体の先端部とチェックリングとの間に設けられたシートの外周部にスクリュ本体のスクリュ溝と逆方向に傾斜した複数の溝と複数の隔壁とにより形成された撹拌体が設けられたことを特徴とする射出成形装置のスクリュ。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2009216558A JP5589328B2 (ja) | 2009-09-18 | 2009-09-18 | 射出成形装置のスクリュ |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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JP2009216558A JP5589328B2 (ja) | 2009-09-18 | 2009-09-18 | 射出成形装置のスクリュ |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2011062951A JP2011062951A (ja) | 2011-03-31 |
JP5589328B2 true JP5589328B2 (ja) | 2014-09-17 |
Family
ID=43949716
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2009216558A Active JP5589328B2 (ja) | 2009-09-18 | 2009-09-18 | 射出成形装置のスクリュ |
Country Status (1)
Country | Link |
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JP (1) | JP5589328B2 (ja) |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6027612Y2 (ja) * | 1980-03-15 | 1985-08-21 | 株式会社日本製鋼所 | 射出成形機の逆流防止リングを設けた可塑化スクリユ− |
JPS61100427A (ja) * | 1984-10-22 | 1986-05-19 | Jiyuken Kogyo:Kk | スクリュ−ヘツド部における逆流防止装置 |
JPH08142138A (ja) * | 1994-11-17 | 1996-06-04 | Bando Chem Ind Ltd | 射出成形機の逆流防止装置 |
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2009
- 2009-09-18 JP JP2009216558A patent/JP5589328B2/ja active Active
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JP2011062951A (ja) | 2011-03-31 |
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