JPH0754081B2 - Method for manufacturing scroll - Google Patents

Method for manufacturing scroll

Info

Publication number
JPH0754081B2
JPH0754081B2 JP62064316A JP6431687A JPH0754081B2 JP H0754081 B2 JPH0754081 B2 JP H0754081B2 JP 62064316 A JP62064316 A JP 62064316A JP 6431687 A JP6431687 A JP 6431687A JP H0754081 B2 JPH0754081 B2 JP H0754081B2
Authority
JP
Japan
Prior art keywords
scroll
end plate
wrap
manufacturing
fixed
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.)
Expired - Fee Related
Application number
JP62064316A
Other languages
Japanese (ja)
Other versions
JPS63230901A (en
Inventor
誠 早野
繁美 長友
寛二 坂田
尚哉 両角
耕一 米山
順治 曽根
鈴木　　勲
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Original Assignee
Toshiba Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Toshiba Corp filed Critical Toshiba Corp
Priority to JP62064316A priority Critical patent/JPH0754081B2/en
Priority to DK148588A priority patent/DK148588A/en
Priority to US07/170,354 priority patent/US4875839A/en
Priority to KR1019880002992A priority patent/KR900009226B1/en
Publication of JPS63230901A publication Critical patent/JPS63230901A/en
Publication of JPH0754081B2 publication Critical patent/JPH0754081B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C1/00—Rotary-piston machines or engines
    • F01C1/02—Rotary-piston machines or engines of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
    • F01C1/0207—Rotary-piston machines or engines of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form
    • F01C1/0246—Details concerning the involute wraps or their base, e.g. geometry
    • 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
    • B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
    • 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
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/68—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts by incorporating or moulding on preformed parts, e.g. inserts or layers, e.g. foam blocks
    • B29C70/74—Moulding material on a relatively small portion of the preformed part, e.g. outsert moulding
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2230/00—Manufacture
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2230/00—Manufacture

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Geometry (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Rotary Pumps (AREA)

Description

【発明の詳細な説明】 〔発明の目的〕 （産業上の利用分野） この発明は、スクロール容積形機械に用いるスクロール
の製造方法に関する。DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Field of Industrial Application) The present invention relates to a method for manufacturing a scroll used in a scroll positive displacement machine.

（従来の技術） スクロール容積形機械は、流体の移送，ガスの圧縮また
は膨張を行なうために、鏡板に渦巻状のラップを有する
固定スクロールと、鏡板に渦巻状のラップを有する旋回
スクロールを持っている。両スクロールはお互いにラッ
プを向かい合わせにしてかみ合い、旋回スクロールは、
固定スクロールに対して身かけ上自転しないように旋回
運動することにより、ガスの圧縮、膨張及び移送を行な
うものである。(Prior Art) A scroll positive displacement machine has a fixed scroll having a spiral wrap on its end plate and a revolving scroll having a spiral wrap on its end plate in order to transfer fluid and compress or expand gas. There is. Both scrolls engage each other with their laps facing each other, and the orbiting scroll,
The gas is compressed, expanded, and transferred by rotating around the fixed scroll so that it does not apparently rotate.

このようなスクロール容積形機械に用いられるスクロー
ルを簡単に製造するため、特開昭59−135309に示す構成
がある。これはスクロールの材料に合成樹脂を用いたも
のである。合成樹脂は、十分に可塑性を有する高分子材
料であり、一般にスクロールも射出成形でつくられる。
その方法は合成樹脂を加熱して可塑化し、スクロー
ルの形状をして閉じられた金型内に射出し、冷却して
固化したスクロールの成形品を金型を開いて取出す、と
いうものである。この方法であれば、スクロールの製造
時間が短かく（一般に一回の成形に要する時間は30秒か
ら60秒である）なる。In order to easily manufacture a scroll used in such a scroll positive displacement machine, there is a configuration disclosed in Japanese Patent Laid-Open No. 59-135309. This uses a synthetic resin for the scroll material. Synthetic resin is a polymer material having sufficient plasticity, and scrolls are generally made by injection molding.
The method is to heat and plasticize a synthetic resin, inject it into a closed mold having the shape of a scroll, and cool and solidify the molded product of the scroll by opening the mold and taking it out. With this method, the scroll manufacturing time is short (generally, the time required for one molding is 30 to 60 seconds).

（発明が解決しようとする問題点） しかし、この方法は以下に述べる欠点がある。スクロー
ルの成形品の寸法は、金型の寸法より少し小さくなる。
これは、合成樹脂が常温に冷却される際収縮するため
で、収縮率は0.4〜1.6％ぐらいのものが多い。合成樹脂
の冷却が、スクロール全部にわたり同時に行なわれれ
ば、収縮も一様になるが、実際は、閉じられた金型内に
射出された合成樹脂が金型に接した部分より冷却される
ため、収縮に時間的ずれがおき収縮量に差が出て、スク
ロールが反り変形する。よって設計通りの寸法ではつく
れない。(Problems to be Solved by the Invention) However, this method has the following drawbacks. The dimensions of the scroll molding are slightly smaller than the dimensions of the mold.
This is because the synthetic resin shrinks when cooled to room temperature, and the shrinkage rate is often 0.4 to 1.6%. If the synthetic resin is cooled all over the scroll at the same time, the shrinkage will be uniform, but in reality, the synthetic resin injected into the closed mold will be cooled from the part in contact with the mold, so the shrinkage will occur. There is a time lag between the two, causing a difference in the amount of contraction, and the scroll warps and deforms. Therefore, it cannot be made with the dimensions as designed.

このため、設計寸法通りの固定スクロール及び旋回スク
ロールはつくれず、固定スクロールと旋回スクロールの
かみ合わせは悪くなり、冷媒がもれやすくなるため、圧
縮性能、膨張性能及び移送性能が低下する。Therefore, the fixed scroll and the orbiting scroll cannot be manufactured according to the designed dimensions, the fixed scroll and the orbiting scroll are not easily meshed with each other, and the refrigerant easily leaks, so that the compression performance, the expansion performance, and the transfer performance are deteriorated.

更に、スクロールを射出成形でつくると鏡板とラップの
交わるコーナーに残留応力が発生し、このコーナーが脆
弱化してラップ全面で受けるラップの表側と裏側の差圧
の発生に伴う応力がコーナーに集中し、ラップが簡単に
破損する恐れがある。Furthermore, when a scroll is made by injection molding, residual stress is generated at the corner where the end plate and the wrap intersect, and this corner becomes weak and the stress due to the differential pressure between the front and back sides of the lap received on the entire surface of the wrap concentrates at the corner. , The wrap may be easily damaged.

この発明は、従来のものがもつ以上のような問題点を解
消させ、設計通りの寸法を得られる製造方法を提供する
ことを目的とする。It is an object of the present invention to provide a manufacturing method that solves the above-mentioned problems of the conventional one and can obtain a dimension as designed.

〔発明の構成〕[Structure of Invention]

（問題点を解決するための手段） この目的を達成するために、本発明は次のような製造方
法をとっている。すなわち、あらかじめ製造した鏡板に
射出成形により渦巻状のラップを取付ける製造方法とし
ている。(Means for Solving Problems) In order to achieve this object, the present invention employs the following manufacturing method. That is, the manufacturing method is such that a spiral wrap is attached to a prefabricated end plate by injection molding.

（実施例） まず第１実施例として、鏡板が金属で形成されてる場合
の製造方法を説明する。第１図は、この製造方法により
製造された固定スクロール２及び旋回スクロール４であ
る。(Example) First, as a first example, a manufacturing method in the case where the end plate is made of metal will be described. FIG. 1 shows a fixed scroll 2 and an orbiting scroll 4 manufactured by this manufacturing method.

はじめに、円盤形の固定鏡板６を製造する。この時に、
固定鏡板６が必要とされる精度を出しておく。つぎに固
定鏡板６に固定溝6aを形成する。最後に射出成形により
固定ラップ８を形成する。この場合、溝6aの形状は固定
ラップ８がぬけないような形状例えば、第１図に示した
ように、溝上部を広くした形状が望ましい。First, the disk-shaped fixed mirror plate 6 is manufactured. At this time,
The required accuracy of the fixed mirror plate 6 is given. Next, the fixed groove 6a is formed in the fixed end plate 6. Finally, the fixed wrap 8 is formed by injection molding. In this case, it is desirable that the shape of the groove 6a is such that the fixing wrap 8 does not pass through, for example, a shape in which the upper part of the groove is wide as shown in FIG.

又旋回スクロール４の製造方法も固定スクロール２の製
造方法と同様に、旋回鏡板10を製造し、旋回鏡板10に旋
回溝10aを形成し、最後に射出成形により旋回ラップ12
を形成する。Also, the manufacturing method of the orbiting scroll 4 is the same as the manufacturing method of the fixed scroll 2, the orbiting end plate 10 is manufactured, the orbiting groove 10a is formed in the orbiting end plate 10, and finally the orbiting wrap 12 is formed by injection molding.
To form.

このような製造方法で製造したスクロールは、鏡板は金
属であるから収縮による変形はすることはなく、又、ラ
ップは合成樹脂であるから収縮はするが、形状は複雑で
はないため収縮に時間的ずれはほとんどなく、一様に収
縮する。よってほぼ設計通りの寸法で製造することがで
きる。The scroll manufactured by such a manufacturing method does not deform due to shrinkage because the end plate is made of metal, and it shrinks because the wrap is made of synthetic resin, but since the shape is not complicated, shrinkage takes time. There is almost no deviation, and it shrinks uniformly. Therefore, it can be manufactured with almost the designed size.

つぎに第二実施例として、鏡板が合成樹脂で形成されて
いる場合の製造方法を説明する。Next, as a second embodiment, a manufacturing method when the end plate is made of synthetic resin will be described.

はじめに、鏡板を射出成形により製造する。このとき、
ラップを篏合・固定する渦巻状の溝を鏡板の肉厚方向に
予め形成しておく。次にこの鏡板に射出成形によりラッ
プを形成する。このとき、鏡板とラップの嵌合部は溶融
して接合する。そのため鏡板に溝を形成することにより
接合力は強くなる。このような製造方法で製造したスク
ロールは、鏡板と、ラップを分けて射出成形し、しかも
形状が複雑でないため収縮に時間的ずれはほとんどなく
一様に収縮する。よってほぼ設計通りの寸法で製造する
ことができる。First, the end plate is manufactured by injection molding. At this time,
A spiral groove for fitting and fixing the wrap is formed in advance in the thickness direction of the end plate. Next, a wrap is formed on this end plate by injection molding. At this time, the fitting portions of the end plate and the wrap are melted and joined. Therefore, by forming the groove on the end plate, the joining force becomes stronger. In the scroll manufactured by such a manufacturing method, the end plate and the wrap are separately injection-molded, and since the shape is not complicated, there is almost no time lag in contraction, and the scroll contracts uniformly. Therefore, it can be manufactured with almost the designed size.

〔発明の効果〕〔The invention's effect〕

以上のように、本発明によれば、短時間にしかも変形及
び残留応力を発生しないスクロールを製造することがで
きる。As described above, according to the present invention, it is possible to manufacture a scroll that does not generate deformation and residual stress in a short time.

【図面の簡単な説明】[Brief description of drawings]

第１図は、本発明の第一実施例により製造されたスクロ
ールの断面図である。 ２……固定スクロール、４……旋回スクロール ６……固定鏡板、6a……固定溝 ８……固定ラップ、10……旋回鏡板 10a……旋回溝、12……旋回ラップFIG. 1 is a cross-sectional view of a scroll manufactured according to the first embodiment of the present invention. 2 …… Fixed scroll, 4 …… Orbiting scroll 6 …… Fixed end plate, 6a …… Fixed groove 8 …… Fixed wrap, 10 …… Turning end plate 10a …… Turning groove, 12 …… Turning wrap

フロントページの続き (72)発明者 両角 尚哉 神奈川県横浜市磯子区新杉田町８番地 株 式会社東芝家電機器技術研究所内 (72)発明者 米山 耕一 神奈川県横浜市磯子区新杉田町８ 株式会 社東芝生産技術研究所内 (72)発明者 曽根 順治 神奈川県横浜市磯子区新杉田町８ 株式会 社東芝生産技術研究所内 (72)発明者 鈴木 勲 神奈川県横浜市磯子区新杉田町８ 株式会 社東芝生産技術研究所内 (56)参考文献 特開 昭59−79089（ＪＰ，Ａ)Front page continuation (72) Inventor Naoya Ryokuzumi 8 Shinsita-cho, Isogo-ku, Yokohama-shi, Kanagawa Inside the Home Appliances Technology Laboratory, Inc. (72) Inventor Koichi Yoneyama 8 Shinsugita-cho, Isogo-ku, Yokohama, Kanagawa Prefecture Toshiba Corporation Production Engineering Laboratory (72) Inventor Junji Sone 8 Shinsita-cho, Isogo-ku, Yokohama, Kanagawa Stock Company Toshiba Production Engineering Laboratory (72) Inventor Isao 8 Shinsugita-cho, Isogo-ku, Yokohama, Kanagawa Prefecture In the laboratory (56) References JP-A-59-79089 (JP, A)

Claims (1)

【特許請求の範囲】[Claims] 【請求項１】鏡板の平板面上に渦巻状のラップを形成し
たスクロール流体機械にもちいるスクロールの製造方法
において、渦巻状のラップ篏合部を鏡板の板厚方向に形
成する工程と、上記ラップ嵌合部に射出成形により肉厚
がほぼ均一な渦巻状の樹脂製ラップを形成する行程とを
具備して成る事を特徴とするスクロールの製造方法。1. A method of manufacturing a scroll used in a scroll fluid machine, wherein a spiral wrap is formed on a flat plate surface of an end plate, in the step of forming a spiral lap joint portion in a plate thickness direction of the end plate. And a step of forming a spiral resin wrap having a substantially uniform wall thickness by injection molding in the lap fitting portion.
JP62064316A 1987-03-20 1987-03-20 Method for manufacturing scroll Expired - Fee Related JPH0754081B2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP62064316A JPH0754081B2 (en) 1987-03-20 1987-03-20 Method for manufacturing scroll
DK148588A DK148588A (en) 1987-03-20 1988-03-18 SPIRAL COMPRESSOR AND SPIRAL ELEMENT, AND PROCEDURE FOR MANUFACTURING THE SPIRAL ELEMENT
US07/170,354 US4875839A (en) 1987-03-20 1988-03-18 Scroll member for use in a positive displacement device, and a method for manufacturing the same
KR1019880002992A KR900009226B1 (en) 1987-03-20 1988-03-19 Scroll member and a method for manufacturing the same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62064316A JPH0754081B2 (en) 1987-03-20 1987-03-20 Method for manufacturing scroll

Publications (2)

Publication Number Publication Date
JPS63230901A JPS63230901A (en) 1988-09-27
JPH0754081B2 true JPH0754081B2 (en) 1995-06-07

Family

ID=13254708

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62064316A Expired - Fee Related JPH0754081B2 (en) 1987-03-20 1987-03-20 Method for manufacturing scroll

Country Status (1)

Country Link
JP (1) JPH0754081B2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6165509B2 (en) * 2013-06-10 2017-07-19 三菱重工業株式会社 Method for manufacturing rotating body of fluid machine

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5979089A (en) * 1982-10-27 1984-05-08 Mitsubishi Electric Corp Scroll compressor

Also Published As

Publication number Publication date
JPS63230901A (en) 1988-09-27

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