JPS63203310A - Rotor of screw compressor and the like and molding process of said rotor - Google Patents
Rotor of screw compressor and the like and molding process of said rotorInfo
- Publication number
- JPS63203310A JPS63203310A JP62037328A JP3732887A JPS63203310A JP S63203310 A JPS63203310 A JP S63203310A JP 62037328 A JP62037328 A JP 62037328A JP 3732887 A JP3732887 A JP 3732887A JP S63203310 A JPS63203310 A JP S63203310A
- Authority
- JP
- Japan
- Prior art keywords
- rotor
- outer shell
- plastic
- parison
- molded
- 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.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims description 10
- 238000000465 moulding Methods 0.000 title abstract description 12
- 229920003023 plastic Polymers 0.000 claims abstract description 21
- 239000004033 plastic Substances 0.000 claims abstract description 21
- 229920006351 engineering plastic Polymers 0.000 claims abstract description 17
- 238000000071 blow moulding Methods 0.000 claims description 4
- 238000005299 abrasion Methods 0.000 abstract 2
- 238000002347 injection Methods 0.000 description 9
- 239000007924 injection Substances 0.000 description 9
- 238000001746 injection moulding Methods 0.000 description 3
- 238000007664 blowing Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 1
- 240000003296 Petasites japonicus Species 0.000 description 1
- 235000003823 Petasites japonicus Nutrition 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 235000001436 butterbur Nutrition 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000010137 moulding (plastic) Methods 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 229920006122 polyamide resin Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は、スクリューコンプレッサ等のロータ、及び該
ロータの成形方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a rotor for a screw compressor, etc., and a method for molding the rotor.
［従来の技術］
近年、スクリューコンプレッサ用ロータ等をプラスチッ
ク成形にて製造することが種々実施されている。[Prior Art] In recent years, various methods have been used to manufacture rotors for screw compressors and the like using plastic molding.
こうしたスクリューコンプレッサ用ロータは、圧力部に
使用されるので変形を防止するために中実とし、又摩耗
を防止するために、耐摩耗性プラスチックにより成形す
るようにしている。Since the rotor for such a screw compressor is used as a pressure section, it is made solid to prevent deformation, and is molded from wear-resistant plastic to prevent wear.
第５図はその一例を示すもので、対向内面にロータ成形
用の空間ａ、ｂを存し且つ一端に射出口Ｃを有した２つ
割の金型ｄ、ｅの前記空間ａ、ｂ内に、射出ノズルｆに
より耐摩耗性のエンジニアリングプラスチック（ポリカ
ーボネイト、ナイロン等のポリアミド樹脂）９を前記射
出口Ｃを介して射出充填して凝固させることにより成形
するようにしている。FIG. 5 shows an example of this, in which the spaces a and b of a two-part mold d and e have spaces a and b for rotor molding on the opposing inner surfaces and have an injection port C at one end. Next, wear-resistant engineering plastic (polyamide resin such as polycarbonate or nylon) 9 is injected and filled through the injection nozzle f through the injection port C and solidified to form the mold.
［発明が解決しようとする問題点］
しかし、上記従来方式においては、ロータの全体を耐摩
耗性のエンジニアリングプラスチック９にて成形してお
り、かかるエンジニアリングプラスチックは材料費が高
価であるために非常にコストが高くなる問題があり、し
かも前記エンジニアリングプラスチックは流動性が低く
、そのために射出成形に用いられる設備機器も高価とな
る等の問題を有していた。[Problems to be Solved by the Invention] However, in the above conventional method, the entire rotor is molded from wear-resistant engineering plastic 9, and such engineering plastic is very expensive due to its high material cost. There is a problem in that the cost is high, and furthermore, the engineering plastic has low fluidity, and therefore the equipment used for injection molding is also expensive.
本発明は、かかる従来の問題に着目してなしたもので、
安価で、しかも耐摩耗強度を有したスクリューコンプレ
ッサ用ロータを提供することを目的としている。The present invention was made by focusing on such conventional problems,
It is an object of the present invention to provide a rotor for a screw compressor that is inexpensive and has wear resistance.
［問題点を解決するための手段］
本発明は、上記技術的課題を解決しようとしたもので、
外周に耐摩耗性のエンジニアリングプラスチックよりな
るロータ外殻を有し、且つ該ロータ外殻の内部を凡用プ
ラスチックにて一体に成形してなることを特徴とするス
クリューコンプレッサ等のロータ、及び該ロータの成形
方法に関するものである。[Means for solving the problems] The present invention attempts to solve the above technical problems, and
A rotor for a screw compressor, etc., which has a rotor outer shell made of a wear-resistant engineering plastic on the outer periphery, and the inside of the rotor outer shell is integrally molded from a general-purpose plastic, and the rotor. This relates to a molding method.
［作 用］
従って、本発明では、外周をエンジニアリングプラスチ
ックからなるロータ外殻とし、且つその内部を凡用プラ
スチックに形成したロータとすることにより、経済的で
しかも成形が容易なロータの提供が可能となる。[Function] Therefore, in the present invention, by providing a rotor whose outer periphery is made of an engineering plastic and whose interior is made of a general-purpose plastic, it is possible to provide a rotor that is economical and easy to mold. becomes.
［実 施 例］ 以下本発明の実施例を図面を参照しつつ説明する。[Example] Embodiments of the present invention will be described below with reference to the drawings.
第１．２図は本発明の一例を示すもので、溶融したエン
ジニアリングプラスチックｌを押出してパリソン２を形
成するパリソン押出機３の下部に、対向内面にロータ成
形用の空間４．５を有する金型６，７を設け、該金型６
．７を矢印方向に型合わせしてパリソン２を挾んだ後、
ブローピン８がら空気９を吹出すことによりパリソン２
を空間４，５に沿って膨らませて、第２図に示すように
エンジニアリングプラスチックｌからなるロータ外殻１
°を形成する。この際、吹込成形を行っていることによ
り、複雑な形状の成形も容易に可能である。Fig. 1.2 shows an example of the present invention, in which a parison extruder 3 that extrudes molten engineering plastic 1 to form a parison 2 has a molded metal plate having a space 4.5 for rotor molding on the opposing inner surface at the lower part of the parison extruder 3. Molds 6 and 7 are provided, and the mold 6
．． After aligning 7 in the direction of the arrow and sandwiching parison 2,
By blowing air 9 through the blow pin 8, the parison 2
is inflated along spaces 4 and 5 to form a rotor outer shell 1 made of engineering plastic as shown in FIG.
Form a °. At this time, by performing blow molding, molding into complex shapes is easily possible.
第２図に示すように、金型６，７から取り出したロータ
外殻１゛の軸線上に軸を通すための孔１０を開口した後
、鎖孔ｌＯにロータ軸１１を差込み、その後ロータ外殻
１°の内部とロータ軸１１との間を、ポリエチレン系等
の安価な凡用プラスチック、又は凡用プラスチックをバ
インダとしたプラスチック以外の強度材料との複合材料
（以下凡用プラスチックと言う） １２により充填して
、ロータ外殻ｌ°とロータ軸１１を一体に構成する。As shown in FIG. 2, after opening a hole 10 for passing the shaft on the axis of the rotor outer shell 1'' taken out from the molds 6 and 7, the rotor shaft 11 is inserted into the chain hole lO, and then the rotor is removed from the outside of the rotor. The space between the inside of the shell 1° and the rotor shaft 11 is made of inexpensive general-purpose plastic such as polyethylene, or a composite material made of general-purpose plastic as a binder and a strong material other than plastic (hereinafter referred to as general-purpose plastic) 12 The rotor outer shell 1° and the rotor shaft 11 are integrally formed.
上記凡用プラスチック１２の充填方式としては、第２図
に示すように、ロータ軸１１に充填用導孔１３を予め形
成しておき、射出ノズル１４により前記充填用導孔１３
を介して凡用プラスチック１２を充填する。As shown in FIG. 2, the filling method for the general purpose plastic 12 is as follows: A filling guide hole 13 is formed in advance on the rotor shaft 11, and an injection nozzle 14 is used to fill the filling guide hole 13.
General-purpose plastic 12 is filled through the container.
又、上記凡用プラスチック１２の充填方式としては、孔
ＩＯとロータ軸１１との隙間から行うようにしたり、或
いはロータ外殻１′に充填用の開口を別個に形成してそ
こから行うようにしても良い一当−１″＋のＪ−シ Ｑ
田ゴ丹フキ１１．々ＩＱｉ＋傭−り性が良好であるため
に、射出充填を容易に行わしめることができる。In addition, the general-purpose plastic 12 may be filled through the gap between the hole IO and the rotor shaft 11, or a filling opening may be separately formed in the rotor outer shell 1' and the filling may be carried out from there. J-shi Q
Tagotan butterbur 11. Since the IQi+ flexibility is good, injection filling can be easily performed.
上記成形方法により、第３図に示すように、内部が安価
な凡用プラスチック１２により成形され、外殻が耐摩耗
性を有するエンジニアリングプラスチック１からなる一
体形状のロータ１５を形成することができる。By the above molding method, as shown in FIG. 3, it is possible to form an integral rotor 15 whose interior is molded from inexpensive general-purpose plastic 12 and whose outer shell is made of wear-resistant engineering plastic 1.
第４図は本発明の他の実施例を示すもので、一端をブロ
ーピン８に接続して空気の吹込みを行うことができ、且
つ他端に射出ノズル１４を接続して凡用プラスチック１
２の射出を行うことができるようにした中空でしかも外
周に開口１６を有した中空軸１７を使用する場合を示し
ている。FIG. 4 shows another embodiment of the present invention, in which one end is connected to a blow pin 8 for blowing air, and the other end is connected to an injection nozzle 14 for general purpose plastic 1.
The case is shown in which a hollow shaft 17 is used, which is hollow and has an opening 16 on the outer periphery so as to be able to perform two injections.
この場合は、金型Ｂ、７の型合わせを行ってエンジニア
リングプラスチックからなるパリソン２を挟んだ後、ブ
ローピン８により中空軸１７の開口１６がら空気を吹き
出させて金型６，７の空間４．５に沿ったロータ外殻を
形成した後、引き続いて射出ノズル１４により中空軸１
７の開口１６から凡用プラスチック２を射出充填して凝
固させることにより、ロータを成形する。この方式によ
れば、ブロー成形と射出成形の作業を連続的に行えるこ
とにより、作業能率の向上を図ることかできる。In this case, after the molds B and 7 are aligned and the parison 2 made of engineering plastic is sandwiched between them, air is blown out from the opening 16 of the hollow shaft 17 using the blow pin 8 to blow out the space 4 of the molds 6 and 7. After forming the rotor outer shell along the hollow shaft 1, the injection nozzle 14 continues to form the rotor shell along the hollow shaft 1.
The rotor is molded by injecting and filling general purpose plastic 2 through the opening 16 of 7 and solidifying it. According to this method, the blow molding and injection molding operations can be performed continuously, thereby improving work efficiency.
尚、本発明は上記実施例にのみ限定されるものではなく
、スクリューコンプレッサのロータ以外にも圧力作用部
で使用されしかも耐摩耗性を要求される種々の部品等の
成形に適用し得ること、その池水発明の要旨を逸脱しな
い範囲内において種々変更を加え得ること、等は勿論で
ある。It should be noted that the present invention is not limited to the above-mentioned embodiments, but can be applied to the molding of various parts, etc., which are used in pressure-acting parts and are required to have wear resistance, in addition to the rotor of a screw compressor. Of course, various changes may be made without departing from the gist of the invention.
［発明の効果コ
上記したように、本発明のスクリューコンプレッサ等の
ロータ、及び該ロータの成形方法によれば、外周をエン
ジニアリングプラスチックからなる外殻とし、且つ該ロ
ータ外殻内部を凡用プラスチックにて形成したロータと
することにより、経済的で、しかも耐摩耗性に優れ、し
かも製造か容易なロータを提供できる優れた効果を奏し
得る。[Effects of the Invention] As described above, according to the rotor for a screw compressor, etc. and the method for molding the rotor of the present invention, the outer periphery is an outer shell made of engineering plastic, and the inside of the rotor outer shell is made of general-purpose plastic. By using a rotor formed by using a rotor, it is possible to achieve an excellent effect of providing a rotor that is economical, has excellent wear resistance, and is easy to manufacture.
第１．２図は本発明の一実施例を示すもので、第１図は
ロータ外殻の吹込成形の説明図、第２図は通常プラスチ
ックの射出成形の説明図、第３図は本発明によるロータ
の断面図、第４図は本発明の別の実施例の説明図、第５
図は従来のロータの成形方法の一例を示す図である。
■はエンジニアリングプラスチック、１°はロータ外殻
、２はパリソン、３はパリソン押出機、４．５は空間、
６，７は金型、８はブローピン、１０は孔、１１はロー
タ軸、１２は凡用プラスチック、１３は充填用導孔、１
４は射出ノズル、１５はロータ、１６は開口、１７は中
空軸を示す。Figures 1 and 2 show an embodiment of the present invention. Figure 1 is an illustration of blow molding of the rotor outer shell, Figure 2 is an illustration of injection molding of ordinary plastic, and Figure 3 is an illustration of the invention. FIG. 4 is an explanatory diagram of another embodiment of the present invention, FIG.
The figure shows an example of a conventional rotor molding method. ■ is engineering plastic, 1° is rotor shell, 2 is parison, 3 is parison extruder, 4.5 is space,
6 and 7 are molds, 8 is a blow pin, 10 is a hole, 11 is a rotor shaft, 12 is a general purpose plastic, 13 is a guide hole for filling, 1
4 is an injection nozzle, 15 is a rotor, 16 is an opening, and 17 is a hollow shaft.
Claims (1)
りなるロータ外殻を有し、且つ該ロータ外殻の内部を凡
用プラスチックにて一体に成形してなることを特徴とす
るスクリューコンプレッサ等のロータ。 ２）溶融したエンジニアリングプラスチックによりパリ
ソンを押出し、該パリソンによる吹込成形によりロータ
外殻を形成し、該ロータ外殻の軸心にロータ軸を配置し
た状態で前記ロータ外殻内部に凡用プラスチックを射出
充填して一体形状のロータを成形することを特徴とする
スクリューコンプレッサ等のロータの成形方法。[Scope of Claims] 1) A screw having a rotor outer shell made of a wear-resistant engineering plastic on the outer periphery, and the inside of the rotor outer shell being integrally molded with a general-purpose plastic. Rotor of compressor, etc. 2) Extrude a parison using molten engineering plastic, form a rotor outer shell by blow molding the parison, and inject general-purpose plastic into the rotor outer shell with the rotor shaft located at the axis of the rotor outer shell. A method for forming a rotor for a screw compressor, etc., which is characterized by filling and forming an integral rotor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62037328A JPS63203310A (en) | 1987-02-20 | 1987-02-20 | Rotor of screw compressor and the like and molding process of said rotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62037328A JPS63203310A (en) | 1987-02-20 | 1987-02-20 | Rotor of screw compressor and the like and molding process of said rotor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63203310A true JPS63203310A (en) | 1988-08-23 |
Family
ID=12494575
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62037328A Pending JPS63203310A (en) | 1987-02-20 | 1987-02-20 | Rotor of screw compressor and the like and molding process of said rotor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63203310A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111550406A (en) * | 2019-02-12 | 2020-08-18 | 阿特拉斯·科普柯空气动力股份有限公司 | Screw rotor and method for producing a screw rotor |
-
1987
- 1987-02-20 JP JP62037328A patent/JPS63203310A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111550406A (en) * | 2019-02-12 | 2020-08-18 | 阿特拉斯·科普柯空气动力股份有限公司 | Screw rotor and method for producing a screw rotor |
| WO2020165689A1 (en) * | 2019-02-12 | 2020-08-20 | Atlas Copco Airpower, Naamloze Vennootschap | Screw rotor and method for manufacturing such screw rotor |
| BE1027047B1 (en) * | 2019-02-12 | 2020-09-10 | Atlas Copco Airpower Nv | Screw rotor and method of manufacturing such screw rotor |
| JP2022520570A (en) * | 2019-02-12 | 2022-03-31 | アトラス コプコ エアーパワー，ナームローゼ フェンノートシャップ | How to manufacture screw rotors and screw rotors |
| CN111550406B (en) * | 2019-02-12 | 2023-10-24 | 阿特拉斯·科普柯空气动力股份有限公司 | Screw rotor and method for producing a screw rotor |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0341880A2 (en) | A multi-injection molded body, a method of molding and a molding machine | |
| JPS63268611A (en) | Manufacture of synthetic-resin molded form having deviated wall reinforcing section structure | |
| US11780131B2 (en) | Passive horn integrally formed by using thermoplastic vulcanized rubber and preparation method thereof | |
| CN101391475B (en) | Mold | |
| KR100230634B1 (en) | Blow injection molding method of integral shaft type body of rotation, and blow molded product | |
| WO1995028275A1 (en) | Hollow integral shaft-including structural part of resin and injection molding method for production of the same | |
| JPS63203310A (en) | Rotor of screw compressor and the like and molding process of said rotor | |
| CN211031020U (en) | Injection mold structure and mold thereof | |
| US20200307043A1 (en) | Resin injection molding method | |
| JPS60264237A (en) | Manufacture of blank for fiber reinforced plastic bolt material | |
| CN206520165U (en) | A kind of injection mold | |
| EP1541317A1 (en) | Method of composite injection molding and mold | |
| TW200706342A (en) | Injection molding method and injection mold of hollow molded product | |
| CN104512009A (en) | Die casting mould and method for producing hollow plastic moulded part using umbrella-type sprue | |
| CN213440825U (en) | Air-assisted forming die in plastic clothes hanger | |
| CN1065812C (en) | Process for the processing of thermoplastic polymers by means of the injection-moulding techinque | |
| CN220808295U (en) | In-mold spraying mold sealing structure for PUR | |
| JP2003080569A (en) | Mold for injection molding | |
| CN218196668U (en) | Injection mold core assembly with 3D printing insert | |
| JPS58145428A (en) | Injection molding of plastics | |
| JPH08108484A (en) | Thermoplastic resin screw | |
| CN117507241A (en) | Double-color molding sealing method and mold suitable for toy parts | |
| US20200061893A1 (en) | Method for Molding a Closure and Gasket Combination | |
| KR100241179B1 (en) | A switch apparatus of injection path in a gas molding machine | |
| JPH0353865Y2 (en) |