JP3104466B2 - Injection molding method - Google Patents
Injection molding methodInfo
- Publication number
- JP3104466B2 JP3104466B2 JP05112973A JP11297393A JP3104466B2 JP 3104466 B2 JP3104466 B2 JP 3104466B2 JP 05112973 A JP05112973 A JP 05112973A JP 11297393 A JP11297393 A JP 11297393A JP 3104466 B2 JP3104466 B2 JP 3104466B2
- Authority
- JP
- Japan
- Prior art keywords
- mold
- injection molding
- air
- molding method
- gas
- 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
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
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Description
【０００１】[0001]
【産業上の利用分野】この発明は、射出成形における成
形品に形成する穴や切りカキ等の形状の形成方法に関す
るものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for forming shapes such as holes and cut oysters formed in a molded product in injection molding.
【０００２】[0002]
【従来の技術】図２は従来の射出成形法を実施する装置
の内部構造を示す断面図であり、図において１は金型コ
アー側、２は金型キャビティ側、３はスプルーランナ
ー、４は金型キャビティ側２に設けられた穴形状を形成
するための凸形状で、金型コアー側１と型締めにより合
わされる部分である。５は成形品である。BACKGROUND OF THE INVENTION Figure 2 is a sectional view showing an internal structure of an apparatus for carrying out the conventional injection molding method, 1 the mold core side in FIG, 2 is a mold cavity tee side, 3 sprue runner, 4 the convex shape for forming the hole shape provided in the mold cavity tea side 2, a portion to be fitted by a die core side 1 and the mold clamping. 5 is a molded article.
【０００３】次に動作について説明する。金型コアー側
１と金型キャビティ側２が成形機により型締め後、成形
品５の形成のために樹脂がスプルーランナー３から金型
内に射出される。金型内に射出された樹脂は、金型キャ
ビティ側２に設けられた穴形状を形成するための凸形状
４と金型コアー側１との合体により流動を規制され、成
形品５に穴形状が形成される。Next, the operation will be described. After the mold core side 1 and the mold cavity tea side 2 clamping the molding machine, resin is injected into the mold sprue runner 3 for the formation of the molded article 5. Injected resin in the mold, is restricted flow by coalescence of a convex shape 4 and the mold core side 1 for forming a hole shape provided in the mold calibration <br/> bi tee side 2, A hole shape is formed in the molded product 5.
【０００４】[0004]
【発明が解決しようとする課題】従来の射出成形法で
は、成形品５に穴や切りカキ等の形状を形成するために
は、凸形状４を有する金型の締め合わせにより樹脂の流
動を遮断して形成する必要がある。そのために成形にお
ける樹脂圧力が高くなれば、それにともなって型締め圧
力を大きくする必要があり、また金型キャビティ側２と
金型コアー側１の締め合わせ部の金型強度を射出される
樹脂圧力により破損することのない大きなものにしなけ
ればならないなどの問題点があった。In the conventional injection molding method, in order to form a shape such as a hole or a cut oyster in the molded product 5, the flow of the resin is blocked by tightening a mold having a convex shape 4. Must be formed. Higher resin pressure in the molding Therefore, it is necessary to increase the clamping pressure along with it, also the resin mold strength of clamping alignment of the mold cavity tea side 2 and the mold core side 1 is injection There is a problem that it must be made large so as not to be damaged by pressure.
【０００５】この発明は上記のような問題点を解消する
ためになされたもので、金型の締め合わせにより成形品
に穴や切りカキ等の形状を形成するのではなく、金型内
に送り込むエアーの圧力により樹脂の流動を遮断するこ
とにより、大きな型締め力や金型強度を必要としない射
出成形によって成形品に穴や切りカキ等の形状を形成す
る射出成形法を得ることを目的とする。SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and does not form a hole or a cut oyster in a molded product by tightening a mold, but feeds the molded product into a mold. The purpose of the present invention is to obtain an injection molding method for forming a shape such as a hole or a cut oyster in a molded product by injection molding which does not require a large clamping force or mold strength by blocking the flow of resin by air pressure. I do.
【０００６】[0006]
【課題を解決するための手段】この発明に係る射出成形
法は、金型内にエアーを送り込むと共に対向位置からエ
アーを排出し、かくして金型内を通るエアーによって金
型内に射出される樹脂の流動を遮断するようにしたもの
である。SUMMARY OF THE INVENTION The injection molding method according to the invention, e from write Mutotomoni facing position sends air into the mold
The resin is discharged, and thus the flow of the resin injected into the mold by the air passing through the mold is blocked.
【０００７】[0007]
【作用】この発明における射出成形法は、金型内に送り
込まれるエアーの圧力により射出される樹脂の流動を遮
断することにより、従来金型のキャビティ側，コアー側
の締め合わせによって成形品に形成されている穴や切り
カキ等といった形状を形成するものである。[Action] injection molding in the present invention, by blocking the flow of resin injected by the pressure of the air fed into the mold, cavity Ti side of the conventional mold, a molded article by tightening adjustment of the core side It forms a shape such as a formed hole or a cut oyster.
【０００８】[0008]
【実施例】実施例１． 以下、この発明の一実施例を図１について説明する。図
１はこの発明の射出成形法を実施する装置を示す断面図
であり、前記従来装置と同一または相当部分には同一符
号を付して説明を省略する。図において、６は金型キャ
ビティ側２に設けたエアー注入口、７は金型コアー側１
に設けたエアー排出口、８はエアー圧力により形成され
た穴形状である。[Embodiment 1] An embodiment of the present invention will be described below with reference to FIG. FIG. 1 is a cross-sectional view showing an apparatus for carrying out the injection molding method of the present invention. In the figure, the air inlet 6 provided in the mold calibration <br/> bi tee side 2, 7 the mold core side 1
The air outlet 8 provided in the hole 8 has a hole shape formed by air pressure.
【０００９】金型キャビティ側２のエアー注入口６から
金型コアー側１のエアー排出口７にエアーを送り込むこ
とにより、スプルーランナー３から射出される樹脂はこ
の送り込まれるエアー圧力の表面が壁となって流動を遮
断される結果となる。従って、樹脂硬化後、成形品５Ａ
にはこのエアーの通り道と同形の穴形状８が形成され
る。[0009] By feeding the air from the air inlet 6 of the mold cavity tea side 2 to the air outlet 7 of the mold core side 1, resin injected from the sprue runner 3 surface wall of the fed is air pressure As a result, the flow is interrupted. Therefore, after the resin is cured, the molded product 5A
Is formed with a hole shape 8 which is the same as the path of the air.
【００１０】実施例２． 上記実施例では金型内にエアーを送り込むことにより成
形品５Ａに穴形状８を形成するものを示したが、エアー
の替りにガスあるいは水を送り込んでも同様の効果が得
られる。Embodiment 2 FIG. In the above embodiment, the hole 8 is formed in the molded product 5A by sending air into the mold. However, the same effect can be obtained by sending gas or water instead of air.
【００１１】[0011]
【発明の効果】以上のように、この発明によれば成形品
に穴や切りカキ等の形状を形成する方法として、従来の
金型キャビティ側，コアー側の締め合わせに加えて、金
型内に送り込むエアー圧力を利用したので、成形機の型
締め圧力の必要性，又は金型加工精度，強度の必要性が
なく、安価に成形品が得られるという効果がある。As is evident from the foregoing description, as a method for forming a shape such as a hole or notch in the molded article according to the present invention, conventional molding cavity tee side, in addition to tightening adjustment of the core side mold Since the air pressure fed into the inside is used, there is no necessity of the mold clamping pressure of the molding machine, or the necessity of the mold processing accuracy and the strength, and there is an effect that a molded product can be obtained at low cost.
【図１】この発明の実施例１を示す射出成形構造の断面
図である。FIG. 1 is a sectional view of an injection molding structure showing a first embodiment of the present invention.
【図２】従来の射出成形の内部構造を示す断面図であ
る。FIG. 2 is a sectional view showing an internal structure of a conventional injection molding.
１ 金型コアー側 ２ 金型キャビティ側 ３ スプルーランナー ５Ａ 成形品 ６ エアー注入口 ７ エアー排出口 ８ 穴形状1 mold core side second mold cavity tee side 3 sprue runner 5A molded article 6 Air inlet 7 air outlet 8 hole shape
Claims (3)
を送り込むと共に前記ガス注入口に対向した位置にガス
排出口を設けてガスを排出し、かくして金型内を通るガ
スによって金型内に射出される樹脂の流動を遮断して、
成形品に穴や切りカキ等の形状を形成することを特徴と
する射出成形法。1. A gas in the mold is provided with a gas inlet at a position opposed to the feed write Mutotomoni the gas inlet to the gas <br/> into the mold
An exhaust port is provided to exhaust gas and thus the gas passing through the mold
Blocking the flow of resin injected into the mold by the scan,
An injection molding method characterized by forming a shape such as a hole or a cut oyster in a molded product.
アーを送り込むと共に前記エアー注入口に対向した位置
にエアー排出口を設けてエアーを排出し、かくして金型
内を通るエアーによって金型内に射出される樹脂の流動
を遮断して、成形品に穴や切りカキ等の形状を形成する
ことを特徴とする射出成形法。Wherein the mold is provided with air inlet et into the mold
Discharging the air to the air discharge port is provided at a position opposed to the air inlet with feeding the earth, thus the air passing through the mold to cut off the flow of resin injected into the mold, the molded article An injection molding method characterized by forming a shape such as a hole or a cut oyster.
送り込むと共に前記水注入口に対向した位置に水排出口
を設けて水を排出し、かくして金型内を通る水によって
金型内に射出される樹脂の流動を遮断して、成形品に穴
や切りカキ等の形状を形成することを特徴とする射出成
形法。Wherein the in mold provided with a water inlet with feeding water into the mold opposed to the water inlet position provided water outlet to discharge water, thus water passing through the mold An injection molding method characterized by forming a shape such as a hole or a cut oyster in a molded product by blocking the flow of a resin injected into a mold.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP05112973A JP3104466B2 (en) | 1993-05-14 | 1993-05-14 | Injection molding method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP05112973A JP3104466B2 (en) | 1993-05-14 | 1993-05-14 | Injection molding method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06320563A JPH06320563A (en) | 1994-11-22 |
| JP3104466B2 true JP3104466B2 (en) | 2000-10-30 |
Family
ID=14600202
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP05112973A Expired - Fee Related JP3104466B2 (en) | 1993-05-14 | 1993-05-14 | Injection molding method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3104466B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4507861B2 (en) * | 2004-12-01 | 2010-07-21 | 河西工業株式会社 | Multicolor molded product molding method and mold |
-
1993
- 1993-05-14 JP JP05112973A patent/JP3104466B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH06320563A (en) | 1994-11-22 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |