JP2020110991A - 発泡成形用の射出成形機のスクリュおよび射出成形機 - Google Patents
発泡成形用の射出成形機のスクリュおよび射出成形機 Download PDFInfo
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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
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/34—Auxiliary operations
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
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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
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/34—Auxiliary operations
-
- 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
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/34—Auxiliary operations
- B29C44/3442—Mixing, kneading or conveying the foamable material
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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
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/34—Auxiliary operations
- B29C44/3442—Mixing, kneading or conveying the foamable material
- B29C44/3446—Feeding the blowing agent
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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
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/34—Auxiliary operations
- B29C44/36—Feeding the material to be shaped
- B29C44/38—Feeding the material to be shaped into a closed space, i.e. to make articles of definite length
- B29C44/42—Feeding the material to be shaped into a closed space, i.e. to make articles of definite length using pressure difference, e.g. by injection or by vacuum
- B29C44/422—Feeding the material to be shaped into a closed space, i.e. to make articles of definite length using pressure difference, e.g. by injection or by vacuum by injecting by forward movement of the plastizising screw
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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
- B29C45/18—Feeding the material into the injection moulding apparatus, i.e. feeding the non-plastified material into the injection unit
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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
- B29C45/18—Feeding the material into the injection moulding apparatus, i.e. feeding the non-plastified material into the injection unit
- B29C45/1816—Feeding auxiliary material, e.g. colouring material
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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
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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
- B29C45/58—Details
- B29C45/60—Screws
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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
- B29C45/58—Details
- B29C45/62—Barrels or cylinders
-
- 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
- B29C45/72—Heating or cooling
- B29C45/74—Heating or cooling of the injection unit
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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
- B29C2045/5096—Axially movable screw decompression of the moulding material by retraction or opposite rotation of the screw
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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
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/34—Auxiliary operations
- B29C44/36—Feeding the material to be shaped
- B29C44/38—Feeding the material to be shaped into a closed space, i.e. to make articles of definite length
- B29C44/42—Feeding the material to be shaped into a closed space, i.e. to make articles of definite length using pressure difference, e.g. by injection or by vacuum
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
- Molding Of Porous Articles (AREA)
Abstract
Description
請求項2に記載の発明は、請求項1に記載のスクリュにおいて、前記スクリュには前記第1のステージと前記第2のステージの間に樹脂の逆流を防止する所定のシール構造が設けられていることを特徴とする発泡成形用の射出成形機のスクリュとして構成される。
請求項3に記載の発明は、請求項1または2に記載のスクリュにおいて、前記スクリュの前記第2のステージにおいて前記飢餓区間の上流側に該飢餓区間に隣接して降圧緩和区間が設けられ、前記降圧緩和区間は、フライト間のスクリュ溝が浅い浅溝部が少なくとも軸方向に2カ所以上形成されていることを特徴とする射出成形機のスクリュとして構成される。
請求項4に記載の発明は、請求項1〜3のいずれかに記載のスクリュを備え、前記加熱シリンダは、前記飢餓区間に対応する所定の位置に不活性ガスを注入する注入口が設けられていることを特徴とする射出成形機として構成される。
3 スクリュ 5 第1のステージ
5a 供給部 5b 圧縮部
5c 計量部
7 第2のステージ 7a 飢餓区間
7b 圧縮部 7c 計量部
7d 降圧緩和区間
9 不活性ガス注入部 12 シングルフライト
13 バリアフライト 14 メインフライト
15 サブフライト 18 ダムフライト
20 シール構造 21 シール
23 流動制御機構 24 連通路
25 弁機構 27 着座面
28 ポペット弁 33 皿バネ
40 縮径部 41 シールリング
42 テーパ面 44 当接部
51 深溝部 52 浅溝部
請求項2に記載の発明は、請求項1に記載のスクリュにおいて、前記スクリュには前記第1のステージと前記第2のステージの間に樹脂の逆流を防止する所定のシール構造が設けられていることを特徴とする発泡成形用の射出成形機のスクリュとして構成される。
請求項3に記載の発明は、請求項1または2に記載のスクリュにおいて、前記スクリュの前記第2のステージにおいて前記飢餓区間の上流側に該飢餓区間に隣接して降圧緩和区間が設けられ、前記降圧緩和区間は、フライト間のスクリュ溝が浅い浅溝部が少なくとも軸方向に2カ所以上形成されていることを特徴とする射出成形機のスクリュとして構成される。
請求項4に記載の発明は、請求項1〜3のいずれかに記載のスクリュを備え、前記加熱シリンダは、前記飢餓区間に対応する所定の位置に不活性ガスを注入する注入口が設けられていることを特徴とする射出成形機として構成される。
Claims (4)
- スクリュの形状によって、その後方から前方にかけて加熱シリンダ内が第1のステージと第2のステージとに区分され、前記第1のステージには樹脂が圧縮されるようになっている第1の圧縮区間が、そして前記第2のステージには樹脂の圧力が低下するようになっている飢餓区間と樹脂が圧縮されるようになっている第2の圧縮区間とが形成され、前記飢餓区間において不活性ガスが注入されるようになっている射出成形機のスクリュであって、
前記スクリュにおいて前記第1の圧縮区間には、メインフライトと該メインフライトよりリード角が大きいサブフライトの組合わせからなるバリアフライトが形成され、前記第2のステージには2条以上の多条フライトが設けられていることを特徴とする発泡成形用の射出成形機のスクリュ。 - 請求項1に記載のスクリュにおいて、前記スクリュには前記第1のステージと前記第2のステージの間に樹脂の逆流を防止する所定のシール構造が設けられていることを特徴とする発泡成形用の射出成形機のスクリュ。
- 請求項1または2に記載のスクリュにおいて、前記スクリュの前記第2のステージにおいて前記飢餓区間の上流側に該飢餓区間に隣接して降圧緩和区間が設けられ、前記降圧緩和区間は、フライト間のスクリュ溝が浅い浅溝部が少なくとも軸方向に2カ所以上形成されていることを特徴とする射出成形機のスクリュ。
- 請求項1〜3のいずれかに記載のスクリュを備え、前記加熱シリンダは、前記飢餓区間に対応する所定の位置に不活性ガスを注入する注入口が設けられていることを特徴とする射出成形機。
Priority Applications (8)
Application Number | Priority Date | Filing Date | Title |
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JP2019003848A JP6758790B2 (ja) | 2019-01-11 | 2019-01-11 | 発泡成形用の射出成形機のスクリュおよび射出成形機 |
US17/421,620 US20220126494A1 (en) | 2019-01-11 | 2019-12-24 | Screw of injection molding machine for foam molding, and injection molding machine |
DE112019006644.7T DE112019006644T5 (de) | 2019-01-11 | 2019-12-24 | Schnecke einer Spritzgießmaschine für das Schaumgießen und Spritzgießmaschine |
PCT/JP2019/050473 WO2020145120A1 (ja) | 2019-01-11 | 2019-12-24 | 発泡成形用の射出成形機のスクリュおよび射出成形機 |
ATA9485/2019A AT524082B1 (de) | 2019-01-11 | 2019-12-24 | Schnecke einer Spritzgießmaschine für das Schaumgießen und Spritzgießmaschine |
CN201980088125.5A CN113272110A (zh) | 2019-01-11 | 2019-12-24 | 发泡成型用的注射成型机的螺杆及注射成型机 |
KR1020217019833A KR20210111758A (ko) | 2019-01-11 | 2019-12-24 | 발포 성형용 사출 성형기의 스크류 및 사출 성형기 |
TW109100256A TWI791934B (zh) | 2019-01-11 | 2020-01-06 | 發泡成形用的射出成形機之螺桿及射出成形機 |
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KR (1) | KR20210111758A (ja) |
CN (1) | CN113272110A (ja) |
AT (1) | AT524082B1 (ja) |
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KR20230117727A (ko) | 2020-12-04 | 2023-08-09 | 가부시끼가이샤 니혼 세이꼬쇼 | 가스 공급 장치, 사출 성형기 및 발포 성형 방법 |
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JPS5812731A (ja) | 1981-07-16 | 1983-01-24 | Sekisui Plastics Co Ltd | 発泡成形装置 |
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- 2019-12-24 KR KR1020217019833A patent/KR20210111758A/ko unknown
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KR20230117727A (ko) | 2020-12-04 | 2023-08-09 | 가부시끼가이샤 니혼 세이꼬쇼 | 가스 공급 장치, 사출 성형기 및 발포 성형 방법 |
DE112021006310T5 (de) | 2020-12-04 | 2023-09-21 | The Japan Steel Works, Ltd. | Gaszufuhrvorrichtung, Spritzgießmaschine und Schaumgießverfahren |
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AT524082A2 (de) | 2022-02-15 |
JP6758790B2 (ja) | 2020-09-23 |
WO2020145120A1 (ja) | 2020-07-16 |
TW202037475A (zh) | 2020-10-16 |
US20220126494A1 (en) | 2022-04-28 |
DE112019006644T5 (de) | 2021-10-28 |
AT524082B1 (de) | 2022-07-15 |
TWI791934B (zh) | 2023-02-11 |
CN113272110A (zh) | 2021-08-17 |
AT524082A5 (de) | 2022-04-15 |
KR20210111758A (ko) | 2021-09-13 |
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