JPS6323887B2 - - Google Patents
Info
- Publication number
- JPS6323887B2 JPS6323887B2 JP54067729A JP6772979A JPS6323887B2 JP S6323887 B2 JPS6323887 B2 JP S6323887B2 JP 54067729 A JP54067729 A JP 54067729A JP 6772979 A JP6772979 A JP 6772979A JP S6323887 B2 JPS6323887 B2 JP S6323887B2
- Authority
- JP
- Japan
- Prior art keywords
- insert
- article
- resin
- boss
- molded 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.)
- Expired
Links
Landscapes
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Description
【発明の詳細な説明】
本発明はインサート樹脂成形品に係り、特に精
密機構部品等として使用されるインサート樹脂成
形品に係る。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an insert resin molded product, and particularly to an insert resin molded product used as a precision mechanical component.
従来、テープレコーダーのシヤーシ等にピンや
ネジ等をインサート成形することが広く行なわれ
ている。ところで、近年、高い寸法精度および強
度が要求されるVTR（ビデオテープレコーダ）用
シヤーシ等にもインサート成形法が適用されるよ
うになつた。しかし、従来の成形法ではインサー
ト物品の表面に沿つてバリが生じるという問題が
あつた。 Conventionally, insert molding of pins, screws, etc. into the chassis of a tape recorder has been widely practiced. Incidentally, in recent years, the insert molding method has also come to be applied to chassis for VTRs (video tape recorders), etc., which require high dimensional accuracy and strength. However, conventional molding methods have had the problem of forming burrs along the surface of the insert article.
本発明の目的はインサート物品の表面に生じる
バリを防止することにより寸法精度の良好なイン
サート樹脂成形品を提供することにある。 An object of the present invention is to provide an insert resin molded article with good dimensional accuracy by preventing burrs from forming on the surface of the insert article.
本発明のインサート樹脂成形品は、金型内にイ
ンサート物品を固定し、該金型内に溶融樹脂を流
入することにより成形してなるインサート樹脂成
形品において前記インサート物品にバリ防止用つ
ばを設けたことを特徴とする。 The insert resin molded article of the present invention is formed by fixing the insert article in a mold and flowing molten resin into the mold, in which the insert article is provided with a burr-preventing collar. It is characterized by:
以下、実施例に従つて説明する。第１図は本発
明の一実施例を示す成形品の断面図である。本例
では成形品の樹脂部であるボスの先端に金属製の
インサートピン１を埋設した場合の例を示す。こ
のような部品はテープレコーダーやVTRの機構
部品等の寸法精度、強度、耐摩耗性の要求される
部分に適用できる。本例ではインサートピン１
の、ボス３の先端部に対応する部分に該ボス３と
同じ外径のつば２を設けたもので、成形時、つば
２の周端部とこれに面する金型との間隙が無く、
しかも該周端部側面に万一樹脂が流れても樹脂の
流れは金型と該周端部側面との間で減速され或い
は阻止されるのでバリがインサートピン１のつば
２より上の部分に生じることを防止したものであ
る。本実施例によればバリを生じることなくボス
の先端部にインサートピンを埋設することができ
る。更に本実施例ではつば２の上に溝４を設けて
いるため、万一微量のバリが生じても溝４に樹脂
が溜まり溝４の上方にバリが生じることを防止す
ることができる。 Examples will be explained below. FIG. 1 is a sectional view of a molded product showing an embodiment of the present invention. In this example, a metal insert pin 1 is embedded in the tip of a boss which is a resin part of a molded product. Such parts can be applied to parts that require dimensional accuracy, strength, and wear resistance, such as mechanical parts of tape recorders and VTRs. In this example, insert pin 1
A collar 2 having the same outer diameter as the boss 3 is provided at a portion corresponding to the tip of the boss 3, and there is no gap between the peripheral end of the collar 2 and the mold facing it during molding.
Moreover, even if the resin should flow to the side surface of the peripheral end, the flow of resin is slowed down or blocked between the mold and the side surface of the peripheral end, so that burrs will not form on the part above the collar 2 of the insert pin 1. This is to prevent this from occurring. According to this embodiment, the insert pin can be embedded in the tip of the boss without causing burrs. Furthermore, in this embodiment, since the groove 4 is provided on the collar 2, even if a small amount of burr should occur, it is possible to prevent resin from accumulating in the groove 4 and forming burr above the groove 4.
第２図は応用例を示したものである。第１図と
異なる点はインサートピン１に設けるつば２の外
径をボス３より大きくしたことである。これによ
れば更に確実にバリを防止することができる。 Figure 2 shows an example of application. The difference from FIG. 1 is that the outer diameter of the collar 2 provided on the insert pin 1 is larger than that of the boss 3. According to this, burrs can be more reliably prevented.
本発明によれば、第１，２図で示すようなイン
サート成形品にバリの生じるのを防止できるので
精度のよいインサート成形品を成形することがで
きる。 According to the present invention, since it is possible to prevent burrs from forming on the insert molded product as shown in FIGS. 1 and 2, it is possible to mold the insert molded product with high precision.
第１図および第２図は本発明の実施例によるイ
ンサート樹脂成形品の断面図である。
１：インサート物品、２：つば、３：樹脂部、
４：溝。
FIGS. 1 and 2 are cross-sectional views of insert resin molded products according to embodiments of the present invention. 1: insert article, 2: brim, 3: resin part,
4: Groove.
Claims (1)
てなり、前記インサート物品には前記ボス先端面
が覆えるようボス先端面と同じかまたはそれより
も大きい寸法のつばを設けたことを特徴とするイ
ンサート樹脂成形品。 ２ 特許請求の範囲第１項記載において、前記イ
ンサート物品は前記つば面上或いは前記つばより
も上方に溝を設けたことを特徴とるインサート樹
脂成形品。[Scope of Claims] 1. A part of the insert article is embedded in a resin boss, and the insert article has a brim having a size equal to or larger than the boss tip surface so as to cover the boss tip surface. An insert resin molded product characterized by: 2. The insert resin molded article according to claim 1, wherein the insert article has a groove provided on the brim surface or above the brim.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6772979A JPS55158931A (en) | 1979-05-30 | 1979-05-30 | Insert resin molded product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6772979A JPS55158931A (en) | 1979-05-30 | 1979-05-30 | Insert resin molded product |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS55158931A JPS55158931A (en) | 1980-12-10 |
| JPS6323887B2 true JPS6323887B2 (en) | 1988-05-18 |
Family
ID=13353329
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6772979A Granted JPS55158931A (en) | 1979-05-30 | 1979-05-30 | Insert resin molded product |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS55158931A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4556093B2 (en) * | 2001-09-14 | 2010-10-06 | 株式会社デンソー | Method and apparatus for removing surplus portion of resin molded product |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5140451B2 (en) * | 1973-07-18 | 1976-11-04 | ||
| JPS51101573A (en) * | 1975-03-04 | 1976-09-08 | Yamamoto Kinzoku Kogyo Kk | TOKEIYOMOJIBANOYOBISONOSEIZOHOHO |
| JPS52853A (en) * | 1975-11-20 | 1977-01-06 | Sanyo Electric Co | Boss for synthetic resin molded article and method of molding same |
-
1979
- 1979-05-30 JP JP6772979A patent/JPS55158931A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS55158931A (en) | 1980-12-10 |
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