JPH0669689B2 - Resin molding method - Google Patents
Resin molding methodInfo
- Publication number
- JPH0669689B2 JPH0669689B2 JP59256400A JP25640084A JPH0669689B2 JP H0669689 B2 JPH0669689 B2 JP H0669689B2 JP 59256400 A JP59256400 A JP 59256400A JP 25640084 A JP25640084 A JP 25640084A JP H0669689 B2 JPH0669689 B2 JP H0669689B2
- Authority
- JP
- Japan
- Prior art keywords
- mold
- stepped pin
- resin
- elastic insert
- lower mold
- 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 - Lifetime
Links
Landscapes
- Moulds For Moulding Plastics Or The Like (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Description
【発明の詳細な説明】 産業上の利用分野 本発明は自動車のフエンダ、ドアアウタパネル、エンジ
ンフード、トランクリツド等形状が比較的平坦で外観が
良く且つ剛性を必要とする補強用弾性体を内蔵した樹脂
成形品の成形方法に関する。Description: TECHNICAL FIELD The present invention relates to a resin including a reinforcing elastic body that has a relatively flat shape such as a car's fan, door outer panel, engine hood, and trunk lid, and has a good appearance and rigidity. The present invention relates to a method for molding a molded product.
従来の技術 第３図において、１′は下型、２′は上型、３′は段付
ピン、４′は弾性インサートであり、弾性インサート
４′は段付ピン３′の小径部が貫通する孔を具えており
該段付ピン３′により所定位置に保持される。次に下型
１′の上に上型２′を覆せ、下型１′と上型２′で形成
される空洞内に樹脂を注入し、補強材として弾性インサ
ート４′を内蔵した樹脂成形品を成形する。2. Prior Art In FIG. 3, 1'is a lower mold, 2'is an upper mold, 3'is a stepped pin, 4'is an elastic insert, and elastic insert 4'is a small diameter portion of the stepped pin 3'through. It is provided with a hole to hold it in place by the stepped pin 3 '. Next, the upper mold 2'is covered on the lower mold 1 ', resin is injected into the cavity formed by the lower mold 1'and the upper mold 2', and a resin molded product incorporating the elastic insert 4'as a reinforcing material. To mold.
発明が解決しようとする問題点 弾性インサートを支持する段付ピンが片持ばりなので強
度が弱く、樹脂の注入圧でピンが変形し、弾性インサー
トの位置が変化する惧れがある。Problems to be Solved by the Invention Since the stepped pin that supports the elastic insert is a cantilever, the strength is weak, and there is a possibility that the position of the elastic insert may change due to the deformation of the pin due to the injection pressure of the resin.
問題点を解決するための手段 弾性インサートを支持する段付ピンの上端を上型で支
え、段付ピンを太くすることなしに剛性を高めた。Means for Solving Problems The upper end of the stepped pin that supports the elastic insert is supported by the upper die to increase the rigidity without making the stepped pin thick.
作用 段付ピンの剛性が高まり、樹脂注入時における弾性イン
サートの位置の変化が防止される。The rigidity of the step pin is increased, and the position of the elastic insert is prevented from changing during resin injection.
実施例 第１図において、１は下型、２は上型、３は下型１に設
けられた段付ピン、４は段付ピン３の小径部が貫通する
孔を具えた弾性インサートで該段付ピン３により所定位
置に保持される。５は上型２に設けられたガイド孔で段
付ピン３の小径部上端と嵌合して該段付ピン３の上端を
支持する。下型２と上型１とで形成される空洞内に樹脂
を注入し、樹脂が凝固した後で上型２と下型１とを分離
すると、段付ピン３は下型１と共に樹脂から引抜かれ、
弾性インサート４を内蔵した樹脂成形品が得られる。Embodiment 1 In FIG. 1, 1 is a lower mold, 2 is an upper mold, 3 is a stepped pin provided on the lower mold 1, 4 is an elastic insert having a hole through which a small diameter portion of the stepped pin 3 passes. It is held in place by the stepped pin 3. Reference numeral 5 is a guide hole provided in the upper die 2 to fit with the upper end of the small diameter portion of the stepped pin 3 to support the upper end of the stepped pin 3. When the resin is injected into the cavity formed by the lower mold 2 and the upper mold 1, and the upper mold 2 and the lower mold 1 are separated after the resin is solidified, the stepped pin 3 is pulled from the resin together with the lower mold 1. Pulled out,
A resin molded product including the elastic insert 4 is obtained.
樹脂注入時に弾性インサート４が浮き上がる惧れがある
場合には、第２図に示すように上型２にガイド孔５を具
えた突起６を設け、段付ピン３の段部と突起６とで弾性
インサート４を挾み弾性インサート４の浮き上がりを防
ぐのが好ましい。If the elastic insert 4 is likely to rise when the resin is injected, the upper mold 2 is provided with a projection 6 having a guide hole 5 as shown in FIG. 2, and the stepped portion of the stepped pin 3 and the projection 6 are joined together. It is preferable to sandwich the elastic insert 4 to prevent the elastic insert 4 from rising.
樹脂としてはエポキシ、ウレタン、ナイロン、ポリエス
テル等が使用され、弾性インサートとしてはプラスチツ
クフオーム、繊維のクロスマツト、不織布等が使用され
る。Epoxy, urethane, nylon, polyester, etc. are used as the resin, and plastic foam, fiber cloth mat, non-woven fabric, etc. are used as the elastic insert.
発明の効果 細い段付ピンを使用して弾性インサートを樹脂内の所定
位置に固定できるので、樹脂成形品の剛性が向上する。EFFECTS OF THE INVENTION Since the elastic insert can be fixed at a predetermined position in the resin by using the thin stepped pin, the rigidity of the resin molded product is improved.
第１図は本発明樹脂成形方法に使用する装置の実施例の
概略断面図、第２図は装置の他の実施例の概略断面図、
第３図は従来装置の概略断面図である。 １…下型、２…上型 ３…段付ピン、４…弾性インサート ５…ガイド孔1 is a schematic sectional view of an embodiment of an apparatus used in the resin molding method of the present invention, and FIG. 2 is a schematic sectional view of another embodiment of the apparatus,
FIG. 3 is a schematic sectional view of a conventional device. 1 ... Lower mold 2 ... Upper mold 3 ... Stepped pin 4 ... Elastic insert 5 ... Guide hole
Claims (1)
下型とし、前記段付ピンの小径部に嵌合するガイド孔を
内部に具え下面を開放した型を上型とし、前記段付ピン
の小径部が貫通する孔を具えた板状の弾性体を前記段付
ピンにより下型内の所定位置に支持し、上型内部の前記
ガイド孔が前記段付ピンに嵌合するように該上型を前記
下型に係合させ、前記の上型と下型で形成される空洞部
に樹脂を注入することを特徴とする樹脂成形方法。1. A mold having stepped pins inside and an open upper surface is a lower mold, and a mold having inside a guide hole fitted to a small diameter portion of the stepped pin and having an open lower surface is an upper mold. A plate-like elastic body having a hole through which the small diameter portion of the stepped pin penetrates is supported at a predetermined position in the lower mold by the stepped pin, and the guide hole inside the upper mold fits the stepped pin. Thus, the upper mold is engaged with the lower mold, and resin is injected into the cavity formed by the upper mold and the lower mold.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59256400A JPH0669689B2 (en) | 1984-12-06 | 1984-12-06 | Resin molding method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59256400A JPH0669689B2 (en) | 1984-12-06 | 1984-12-06 | Resin molding method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61134212A JPS61134212A (en) | 1986-06-21 |
| JPH0669689B2 true JPH0669689B2 (en) | 1994-09-07 |
Family
ID=17292149
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59256400A Expired - Lifetime JPH0669689B2 (en) | 1984-12-06 | 1984-12-06 | Resin molding method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0669689B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0745145B2 (en) * | 1987-01-23 | 1995-05-17 | 豊田合成株式会社 | Molding method for pad for gas bag and molding die used for molding |
| JP3402719B2 (en) * | 1993-12-29 | 2003-05-06 | ニチアス株式会社 | Manufacturing method of plate-shaped insert molding using fluororesin as surface material |
| JP6200845B2 (en) * | 2014-04-02 | 2017-09-20 | 本田技研工業株式会社 | Vehicle seat pad, method for manufacturing vehicle seat pad, and mold used therefor |
| JP7104585B2 (en) * | 2018-08-28 | 2022-07-21 | 株式会社イノアックコーポレーション | Sound absorbing panel material for vehicles and its manufacturing method |
-
1984
- 1984-12-06 JP JP59256400A patent/JPH0669689B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61134212A (en) | 1986-06-21 |
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