JP3295515B2 - Integral molding method of elastic member and synthetic resin member - Google Patents
Integral molding method of elastic member and synthetic resin memberInfo
- Publication number
- JP3295515B2 JP3295515B2 JP2750694A JP2750694A JP3295515B2 JP 3295515 B2 JP3295515 B2 JP 3295515B2 JP 2750694 A JP2750694 A JP 2750694A JP 2750694 A JP2750694 A JP 2750694A JP 3295515 B2 JP3295515 B2 JP 3295515B2
- Authority
- JP
- Japan
- Prior art keywords
- synthetic resin
- elastic member
- elastic
- resin material
- molding method
- 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
Landscapes
- Injection Moulding Of Plastics Or The Like (AREA)
Description
【０００１】[0001]
【産業上の利用分野】この発明は弾性材料でなる弾性部
材と、合成樹脂部材とを射出成形により一体に固着成形
する方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for integrally fixing an elastic member made of an elastic material and a synthetic resin member by injection molding.
【０００２】[0002]
【従来の技術】従来、合成樹脂部材と弾性部材とを固着
する方法としては、例えば内燃機関の遮音カバーを製造
する場合のように、射出成形により函形や樋形に成形し
た合成樹脂部材に、ゴム等の弾性部材を吸音材または緩
衝材として接着剤で貼付け、あるいはビス止めで固着す
る等の方法を用いていた。2. Description of the Related Art Conventionally, as a method of fixing a synthetic resin member and an elastic member, for example, as in the case of manufacturing a sound insulation cover of an internal combustion engine, a synthetic resin member molded into a box shape or a gutter shape by injection molding is used. And a method of attaching an elastic member such as rubber as a sound absorbing material or a cushioning material with an adhesive or fixing with a screw.
【０００３】[0003]
【発明が解決しようとする課題】従来の弾性部材を固着
する方法は、工数がかかり特に形状の複雑なものでは作
業が煩わしい。さらに接着剤の使用条件によっては接着
不良で剥離を生ずるおそれがある。またビス止めでは全
面積が固着されるものでなく、ビス部分の集中応力で亀
裂、脱落等のおそれがある。The conventional method of fixing an elastic member requires a lot of man-hours, and is particularly troublesome when the shape is complicated. Furthermore, there is a possibility that peeling may occur due to poor bonding depending on the use conditions of the adhesive. Also, the whole area is not fixed by screwing, and there is a possibility that cracks or falling off may occur due to the concentrated stress of the screw portion.
【０００４】[0004]
【課題を解決するための手段】この発明は、弾性部材と
合成樹脂部材の一体成形方法において、弾性材料でなる
弾性部材の表面の一部に、熱硬化性合成樹脂でなり板状
または膜状の保護部材を固着し、この弾性部材を射出成
形機の移動金型のキャビティ面に設けた凹所に挿入し、
保護部材が固定金型のゲートの開口に対向する位置にあ
り、かつ保護部材の面積をゲートの開口面積より大と
し、金型を閉じて、溶融した合成樹脂材料がキャビティ
内の隅々まで行きわたる程度の圧力で合成樹脂材料を射
出して合成樹脂部材を成形するようにしたものである。 SUMMARY OF THE INVENTION The present invention provides an elastic member and
In an integral molding method of a synthetic resin member, it is made of an elastic material.
Part of the surface of the elastic member made of thermosetting synthetic resin
Alternatively, a film-like protection member is fixed, and this elastic member is formed by injection molding.
Insert into the recess provided on the cavity surface of the moving die of the forming machine,
Make sure that the protective member faces the opening of the gate of the fixed mold.
And the area of the protective member is larger than the gate opening area.
The mold is closed and the molten plastic material is
The synthetic resin material is sprayed at a pressure that
The synthetic resin member is molded out.
【０００５】[0005]
【作用】この発明の方法では射出成形により合成樹脂部
材を成形する際同時に弾性部材が固着される。この際保
護部材の存在、および射出圧が低圧（kg／cm 2 単位で、
１桁の値程度）であることにより、ゲート開口から噴出
する合成樹脂材料によって弾性部材が犯され孔明きが生
ずる等のことはない。弾性部材は合成樹脂材料の投錨効
果により密着する。According to the method of the present invention, the elastic member is fixed at the same time as the synthetic resin member is formed by injection molding. At this time, the presence of the protective member and the injection pressure were low (in kg / cm 2 units,
With a value of about one digit), there is no possibility that the elastic member is violated by the synthetic resin material ejected from the gate opening and a hole is formed. The elastic members adhere to each other due to the anchoring effect of the synthetic resin material.
【０００６】[0006]
【実施例】図１、図２によって実施例を説明する。図２
に示すように気泡を含む天然ゴムでなる板状の弾性部材
１の一方側表面に、浅い凹部を形成して熱硬化性合成樹
脂の円板でなる保護部材２を嵌め込む。この弾性部材１
を、射出成形機３の移動金型４のキャビティ面５に設け
た凹所６に嵌め込んで保持させる。An embodiment will be described with reference to FIGS. FIG.
A shallow concave portion is formed on one surface of a plate-like elastic member 1 made of natural rubber containing air bubbles as shown in FIG. 1, and a protective member 2 made of a disc made of thermosetting synthetic resin is fitted. This elastic member 1
Is fitted and held in a recess 6 provided in the cavity surface 5 of the movable mold 4 of the injection molding machine 3.
【０００７】次に移動金型４を移動し固定金型７に締付
ける。この場合、固定金型７に設けたゲート８の開口９
の正面に対向して保護部材２が位置し、かつ保護部材２
の面積はゲート８の開口９の面積より大なるようにして
おく。保護部材２は上記の板状のものでもよく、また膜
状のものでもよい。この場合は弾性部材１に凹部を形成
せず、接着剤で弾性部材２の表面に貼付して保持させ
る。Next, the movable mold 4 is moved and fastened to the fixed mold 7. In this case, the opening 9 of the gate 8 provided in the fixed mold 7
The protection member 2 is located facing the front of the
Is larger than the area of the opening 9 of the gate 8. The protection member 2 may be the above-described plate-shaped member or a film-shaped member. In this case, no concave portion is formed in the elastic member 1 and the elastic member 1 is stuck and held on the surface of the elastic member 2 with an adhesive.
【０００８】次に合成樹脂材料１０（この例ではポリプ
ロピレンとし、その他例えばポリアミド等でもよい）を
低圧力でゲート８から射出する。この射出圧力は溶融し
た合成樹脂材料１０がキャビティ内の隅々まで行きわた
る程度の圧力とし、キャビティすなわち成形すべき合成
樹脂部材１１の形状およびその合成樹脂材料１０の粘度
等で定まが、通常の射出圧「ton／cm 2 」よりはるかに低
く、「kg／cm 2 」単位で１桁の値程度である。 Next, a synthetic resin material 10 (polypropylene in this example, and other materials such as polyamide) may be used.
Inject from gate 8 at low pressure . The injection pressure is the pressure enough to synthetic resin material 10 melted spans go throughout the cavity, but Sadama viscosity shape and its synthetic resin material 10 of the synthetic resin member 11 to be cavity i.e. molding, usually Much lower than the injection pressure "ton / cm 2 "
The value is about one digit in the unit of “kg / cm 2 ”.
【０００９】ゲート８の開口９から噴出する合成樹脂材
料１０の流れは直進すると保護部材２に衝突し流れの方
向を変える。この場合弾性部材１は保護部材２に護られ
ているので合成樹脂材料の噴流による力や熱で犯され穴
明き等が生ずることはない。保護部材２の保護が必要な
時間は射出工程の秒単位の短時間であり、低圧の射出で
あるから、保護部材２はこれに耐える程度の材質、形状
でよい。When the flow of the synthetic resin material 10 ejected from the opening 9 of the gate 8 goes straight, it collides with the protection member 2 and changes the direction of the flow. In this case, since the elastic member 1 is protected by the protection member 2, there is no possibility that the elastic member 1 is violated by the force or heat generated by the jet of the synthetic resin material to form a hole or the like. The time required to protect the protection member 2 is a short time of the order of seconds in the injection process.
Therefore , the protective member 2 may be made of a material and a shape that can withstand this.
【００１０】合成樹脂材料１０は、金型４、５で形成さ
れたキャビティ内を流動し充満する。このとき射出圧が
低いので、過度に弾性部材１の表面を圧縮することはな
い。また接触する弾性部材１の表面から内部へ微細な流
れとなって侵入し、いわゆる投錨効果を生ぜしめ、十分
な密着力が得られる。弾性部材１の表面は通常粗い面で
あり（多孔性を有するものも少くない）、特別に緻密で
平滑な表面状態のものでない限り、必要な密着力が得ら
れる。The synthetic resin material 10 flows and fills the cavity formed by the molds 4 and 5. At this time, the injection pressure
Since it is low, the surface of the elastic member 1 is not excessively compressed.
No. Further, the elastic member 1 comes into contact with the surface of the elastic member 1 in the form of a minute flow, so that a so-called anchor effect is produced, and a sufficient adhesive force can be obtained. The surface of the elastic member 1 is usually a rough surface (there are few porous ones), and a necessary adhesive force can be obtained unless the surface is particularly dense and smooth.
【００１１】金型４、５から合成樹脂部材１１を取り出
すとき弾性部材１は密着して一体化した状態で取り出さ
れて図３に示す完成製品１２（この例では内燃機関用の
遮音カバーである）が得られる。When the synthetic resin member 11 is taken out of the molds 4 and 5, the elastic member 1 is taken out in a state of being tightly attached and integrated, and the finished product 12 shown in FIG. 3 (in this example, a sound insulation cover for an internal combustion engine). ) Is obtained.
【００１２】上記の実施例のほか、この発明の方法は、
従来函状、樋状その他適宜の形状の合成樹脂部材の一方
側に弾性部材を貼付けて遮音材、緩衝、防振材等として
いたもの、例えば内燃機関のロッカカバー、あるいはエ
アクリーナのケーシングのボディやカバー等に適用でき
る。In addition to the above embodiment, the method of the present invention comprises:
Conventionally, an elastic member is attached to one side of a synthetic resin member having a box shape, a gutter shape, or any other appropriate shape to provide a sound insulating material, a buffer, a vibration damping material, and the like. Applicable to covers and the like.
【００１３】[0013]
【発明の効果】この発明は弾性部材を合成樹脂部材形成
時に同時に固着一体化する方法であるから、接着剤やビ
ス等の固着手段を用いた弾性部材貼付工程を省くことが
でき、簡単で能率的な一体化方法である。しかも完成製
品は密着状態がよく弾性部材の剥離、欠落等のおそれが
ない。According to the present invention, since the elastic member is bonded and integrated simultaneously with the formation of the synthetic resin member, the step of attaching the elastic member using a fixing means such as an adhesive or a screw can be omitted, and the method is simple and efficient. This is an efficient integration method. In addition, the finished product has a good adhesion state, and there is no possibility that the elastic member peels off or falls off.
【図１】この方法の実施例における射出成形工程を示す
図FIG. 1 is a view showing an injection molding step in an embodiment of the method.
【図２】実施例における弾性部材を示す図FIG. 2 is a view showing an elastic member in the embodiment.
【図３】実施例により得られた完成製品の図FIG. 3 is a diagram of a finished product obtained according to an example.
１ 弾性部材 ２ 保護部材 ４ 移動金型 ６ 凹所 ７ 固定金型 ８ ゲート １０ 合成樹脂材料 １１ 合成樹脂部材 DESCRIPTION OF SYMBOLS 1 Elastic member 2 Protective member 4 Moving mold 6 Depression 7 Fixed mold 8 Gate 10 Synthetic resin material 11 Synthetic resin member
Claims (1)
に、熱硬化性合成樹脂でなり板状または膜状の保護部材
を固着し、この弾性部材を射出成形機の移動金型のキャ
ビティ面に設けた凹所に挿入し、保護部材が固定金型の
ゲートの開口に対向する位置にあり、かつ保護部材の面
積をゲートの開口面積より大とし、金型を閉じて、溶融
した合成樹脂材料がキャビティ内の隅々まで行きわたる
程度の圧力で合成樹脂材料を射出して合成樹脂部材を成
形する、弾性部材と合成樹脂部材の一体成形方法。1. A plate-like or film-like protective member made of a thermosetting synthetic resin is fixed to a part of the surface of an elastic member made of an elastic material, and this elastic member is attached to a cavity of a moving mold of an injection molding machine. was inserted into a recess provided in the surface, the protective member is in a position facing the opening of the gate of the fixed mold, and large cities than the opening area of the gate area of the protective member, the mold is closed, the molten
Synthetic resin material spreads every corner of the cavity
An integrated molding method of an elastic member and a synthetic resin member, in which a synthetic resin material is molded by injecting a synthetic resin material with a moderate pressure .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2750694A JP3295515B2 (en) | 1994-01-31 | 1994-01-31 | Integral molding method of elastic member and synthetic resin member |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2750694A JP3295515B2 (en) | 1994-01-31 | 1994-01-31 | Integral molding method of elastic member and synthetic resin member |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07214591A JPH07214591A (en) | 1995-08-15 |
| JP3295515B2 true JP3295515B2 (en) | 2002-06-24 |
Family
ID=12223029
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2750694A Expired - Fee Related JP3295515B2 (en) | 1994-01-31 | 1994-01-31 | Integral molding method of elastic member and synthetic resin member |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3295515B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7673556B2 (en) | 2004-07-19 | 2010-03-09 | Spencer William L | Coffee maker and method of use |
-
1994
- 1994-01-31 JP JP2750694A patent/JP3295515B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7673556B2 (en) | 2004-07-19 | 2010-03-09 | Spencer William L | Coffee maker and method of use |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH07214591A (en) | 1995-08-15 |
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