JPH05169481A - Integrally molded body of spherical molded product - Google Patents
Integrally molded body of spherical molded productInfo
- Publication number
- JPH05169481A JPH05169481A JP34535291A JP34535291A JPH05169481A JP H05169481 A JPH05169481 A JP H05169481A JP 34535291 A JP34535291 A JP 34535291A JP 34535291 A JP34535291 A JP 34535291A JP H05169481 A JPH05169481 A JP H05169481A
- Authority
- JP
- Japan
- Prior art keywords
- mold cavity
- spherical
- molded product
- injection molding
- product
- 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.)
- Withdrawn
Links
Classifications
-
- 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
- B29C45/1703—Introducing an auxiliary fluid into the mould
- B29C45/1704—Introducing an auxiliary fluid into the mould the fluid being introduced into the interior of the injected material which is still in a molten state, e.g. for producing hollow articles
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、一体中空成形法により
形成される合成樹脂性の球状製品に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a synthetic resin spherical product formed by an integral hollow molding method.
【０００２】[0002]
【従来の技術】従来は、半球状の成形品２個を組み合わ
せることにより球状の成形品を得ていた。また、中空部
なしで一体成形すると「ひけ」と呼ばれるくぼみがめだ
ち、また重量が重く実際に使用は、難しかった。また、
ボールなどの成形品も２パーツの部品を張り合わせるこ
とにより球状製品を得ていた2. Description of the Related Art Conventionally, a spherical molded article has been obtained by combining two hemispherical molded articles. Further, when integrally molded without a hollow portion, a dent called a "sink" was formed, and the weight was heavy, so it was difficult to actually use. Also,
Molded products such as balls were obtained by bonding two parts together.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、上記の
ような構成では、組立に工数がかかり高価であった。本
発明は上記問題に鑑み、工程数を削減し安価な球状製品
を提供することを目的とするものである。However, in the above-mentioned structure, the number of steps for assembling is high and the cost is high. In view of the above problems, it is an object of the present invention to reduce the number of steps and provide an inexpensive spherical product.
【０００４】[0004]
【発明を解決するための手段】上記目的を達成するため
に、本発明は射出成形において溶融した合成樹脂を型キ
ャビティー内に射出した後ガス体または液体を注入しつ
つ圧入して型キャビティーを満たす中空射出成形法を用
いて、製品内部に中空部を持つ球状製品を一体成形する
ものである。In order to achieve the above object, the present invention provides a mold cavity in which a synthetic resin melted in injection molding is injected into a mold cavity and then a gas body or a liquid is injected into the mold cavity while being pressed. Using a hollow injection molding method satisfying the above conditions, a spherical product having a hollow portion inside the product is integrally molded.
【０００５】樹脂としては、ポリスチレン系樹脂、ポリ
オレフィン系樹脂、アクリル、ポリフェニレンエーテ
ル，ポリアミド、塩化ビニルなどの熱可塑性樹脂、ま
た、熱硬化性樹脂などの、合成樹脂が使用できる。ま
た、エラストマーを用いて同様の成形を行ない、ガス圧
入後再び樹脂を射出しガス圧入口を塞ぐことによりボー
ル状の成形品が成形できる。As the resin, a thermoplastic resin such as a polystyrene resin, a polyolefin resin, acryl, polyphenylene ether, polyamide or vinyl chloride, or a synthetic resin such as a thermosetting resin can be used. Further, the same molding is carried out using an elastomer, and after injection of gas, the resin is injected again to close the gas injection port, whereby a ball-shaped molded product can be molded.
【０００６】[0006]
【作用】本発明は、上記した構成により、合成樹脂の球
状製品を一体で形成することができる。According to the present invention, a spherical product made of synthetic resin can be integrally formed with the above-mentioned structure.
【０００７】[0007]
【実施例】次に、本発明の実施例を図１に従って説明す
る。EXAMPLE An example of the present invention will be described below with reference to FIG.
【０００８】[0008]
【実施例１】図１は、本発明の一実施例に係る方法で成
形された、樹脂性球状成形品を示すものである。このよ
うな球状成形品を、樹脂にハイインパクトポリスチレン
を用い、樹脂射出後、樹脂射出と同じノズル口から窒素
ガスを圧入する中空射出成形法で成形すると中空部１を
持った成形品が得られる。EXAMPLE 1 FIG. 1 shows a resinous spherical molded article molded by the method according to one example of the present invention. A high-impact polystyrene resin is used to mold such a spherical molded product, and after the resin is injected, a hollow injection molding method in which nitrogen gas is injected from the same nozzle opening as the resin injection is used to obtain a molded product having a hollow portion 1. ..
【０００９】[0009]
【発明の効果】すなわち、本発明は射出成形において溶
融した合成樹脂を型キャビティー内に射出した後ガス体
または液体を注入しつつ圧入して型キャビティーを満た
す中空射出成形法を用いて、製品内部に中空部を持つ球
状製品を一体成形することにより、安価な球状成形品が
容易に製作できる。That is, the present invention uses a hollow injection molding method in which a synthetic resin melted in injection molding is injected into a mold cavity and then a gas or liquid is injected into the mold cavity to fill the mold cavity. By integrally molding a spherical product having a hollow portion inside the product, an inexpensive spherical molded product can be easily manufactured.
【図１】実施例１の球状成形品の断面図。FIG. 1 is a cross-sectional view of a spherical molded article of Example 1.
１ 中空部 ２ 球状成形品。 ３ ガス圧入口。 1 hollow part 2 spherical molded product. 3 Gas pressure inlet.
Claims (1)
キャビティー内に射出した後ガス体または液体を注入し
つつ圧入して型キャビティーを満たす一体中空射出成形
法を用いて成形され、中空部を持つことを特徴とする球
状成形品。1. A hollow portion formed by injecting a synthetic resin melted in injection molding into a mold cavity, and then press-fitting while injecting a gas or a liquid to fill the mold cavity by using an integral hollow injection molding method. A spherical molded article characterized by having.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP34535291A JPH05169481A (en) | 1991-12-26 | 1991-12-26 | Integrally molded body of spherical molded product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP34535291A JPH05169481A (en) | 1991-12-26 | 1991-12-26 | Integrally molded body of spherical molded product |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH05169481A true JPH05169481A (en) | 1993-07-09 |
Family
ID=18376020
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP34535291A Withdrawn JPH05169481A (en) | 1991-12-26 | 1991-12-26 | Integrally molded body of spherical molded product |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH05169481A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998002213A1 (en) * | 1996-07-16 | 1998-01-22 | Astral Intertrade Limited | Golfball |
-
1991
- 1991-12-26 JP JP34535291A patent/JPH05169481A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998002213A1 (en) * | 1996-07-16 | 1998-01-22 | Astral Intertrade Limited | Golfball |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 19990311 |