JPH0325951Y2 - - Google Patents
Info
- Publication number
- JPH0325951Y2 JPH0325951Y2 JP1985150562U JP15056285U JPH0325951Y2 JP H0325951 Y2 JPH0325951 Y2 JP H0325951Y2 JP 1985150562 U JP1985150562 U JP 1985150562U JP 15056285 U JP15056285 U JP 15056285U JP H0325951 Y2 JPH0325951 Y2 JP H0325951Y2
- Authority
- JP
- Japan
- Prior art keywords
- cavity
- nest
- submarine gate
- gate
- 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
- 230000002093 peripheral effect Effects 0.000 claims description 5
- 238000002347 injection Methods 0.000 claims description 3
- 239000007924 injection Substances 0.000 claims description 3
- 239000011347 resin Substances 0.000 description 4
- 229920005989 resin Polymers 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 238000001746 injection moulding Methods 0.000 description 1
Description
【考案の詳細な説明】
（産業上の利用分野）
本考案は射出成形金型のサブマリンゲート装置
に関する。[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a submarine gate device for an injection mold.
（従来技術）
従来の射出成形金型は第３図に示す如く可動側
金型１のキヤビテイ２後部にエジエクターピン３
を摺動自在に配設し、ランナー４に連通したサブ
マリンゲート５をキヤビテイ２の後端より中間方
向に寄つた部分に所定の進入角度で形成してい
た。(Prior art) The conventional injection mold has an ejector pin 3 at the rear of the cavity 2 of the movable mold 1, as shown in Fig. 3.
A submarine gate 5 communicating with the runner 4 is formed at a predetermined entrance angle in a portion of the cavity 2 that is closer to the middle than the rear end of the cavity 2.
（本考案が解決しようとする問題点）
しかし乍ら上記従来技術に於ては第４図に示す
如く成形品６の中間部に縦長のゲート跡７が生
じ、又成形品６をエジエクターピン３で押圧して
取り出す時にサブマリンゲート５のエツジ部５ａ
でゲート跡７後部の成形品６外面に、損傷部８を
生ずるという問題点があり、更にはサブマリンゲ
ート５の開口部が縦長の楕円形になる為、樹脂充
填時に樹脂の流れを制御しにくく、シヨウトシヨ
ツトを生ずる恐れを有するものであつた。(Problems to be Solved by the Present Invention) However, in the above-mentioned prior art, as shown in FIG. 3 when pressing and taking out the edge part 5a of the submarine gate 5.
There is a problem that a damaged part 8 is generated on the outer surface of the molded product 6 at the rear of the gate mark 7, and furthermore, since the opening of the submarine gate 5 has a vertically elongated oval shape, it is difficult to control the flow of resin during resin filling. , there was a risk of causing a shot.
本考案はこのような問題点の解決に着目してな
されたもので、良好な成形品を得ることのできる
射出成形金型のサブマリンゲート装置を提供せん
とするものである。 The present invention has been made with an eye to solving these problems, and aims to provide a submarine gate device for injection molding molds that can produce good molded products.
（問題点を解決するための技術手段）
本考案は上記問題点を解決するためキヤビテイ
を有する型板に入れ子を配置し、該入れ子の前端
面と、キヤビテイ内周面とに亘つて開口する如
く、所定進入角度でサブマリンゲートを形成した
ことを特徴とするものである。(Technical means for solving the problem) In order to solve the above problem, the present invention arranges a nest in a mold plate having a cavity, and has an opening extending between the front end surface of the nest and the inner peripheral surface of the cavity. , a submarine gate is formed at a predetermined approach angle.
（実施例）
第１図、第２図に示した実施例について具体的
に説明する。型板１０のキヤビテイ１１後端面１
１ａに対して摺動自在に配設したエジエクターピ
ン１２の外周に入れ子１３を嵌合して型板１０と
一体に固定してその前端面１３ａとエジエクター
ピン１２の前端面１２ａとを面一にし、キヤビテ
イ１１後端部内周面及び入れ子１３前端面に亘つ
て開口する如く所定進入角度でサブマリンゲート
１４を形成してある。(Example) The example shown in FIGS. 1 and 2 will be specifically described. Cavity 11 rear end surface 1 of template 10
A nest 13 is fitted onto the outer periphery of the ejector pin 12, which is slidably disposed on the ejector pin 1a, and is fixed integrally with the template 10, so that its front end surface 13a and the front end surface 12a of the ejector pin 12 are flush with each other. A submarine gate 14 is formed at a predetermined entrance angle so as to open across the inner peripheral surface of the rear end of the cavity 11 and the front end surface of the nest 13.
尚、図示例ではサブマリンゲート１４の開口部
をキヤビテイ１１後端部内周面、即ち成形品１５
の後端部に位置させるようなしたものを示した
が、成形品１５自体に段部や鍔部がある場合には
これらの後端部にサブマリンゲート１４の開口部
を上記同様入れ子１３を用いて位置させるように
してもよい。 In the illustrated example, the opening of the submarine gate 14 is located on the inner peripheral surface of the rear end of the cavity 11, that is, on the molded product 15.
Although the case where the submarine gate 14 is positioned at the rear end is shown, if the molded product 15 itself has a step or a flange, the opening of the submarine gate 14 can be placed at the rear end of these using the nest 13 as described above. It may also be positioned at the same location.
次に作用について説明する。サブマリンゲート
１４の所定進入角度が従来と同様であつても一部
は入れ子１３の前端面に開口しているので、成形
品１５に形成されるゲート跡１６を縦方向に短い
ものとすることができ、該サブマリンゲート１４
の開口部の形状を真円に近い形状となして樹脂充
填の制御を容易となすことができる。又成形品１
５を取り出す際にサブマリンゲート１４のエツジ
部１４ａで成形品１５にゲート跡１６以外に新に
損傷を与えることがなくなる。 Next, the effect will be explained. Even if the predetermined approach angle of the submarine gate 14 is the same as the conventional one, since a part of the submarine gate 14 is opened at the front end surface of the nest 13, the gate mark 16 formed on the molded product 15 can be made short in the vertical direction. Yes, the submarine gate 14
By making the shape of the opening close to a perfect circle, resin filling can be easily controlled. Also molded product 1
When taking out the molded product 15, no new damage is caused to the molded product 15 other than the gate mark 16 by the edge portion 14a of the submarine gate 14.
（効果）
本考案によるとキヤビテイを有する型板に入れ
子を配置し、該入れ子の前端面と、キヤビテイ内
周面とに亘つて開口する如く、所定進入角度でサ
ブマリンゲートを形成してあるので、サブマリン
ゲートの開口部の形状を真円に近似せしめ、樹脂
充填の制御を容易となすことができる。又成形品
外面に残るゲート跡を小さくでき、エツジ部によ
り成形品外面に損傷を生ずることもない。(Effects) According to the present invention, a nest is placed in a mold plate having a cavity, and a submarine gate is formed at a predetermined approach angle so as to open across the front end surface of the nest and the inner peripheral surface of the cavity. By approximating the shape of the opening of the submarine gate to a perfect circle, resin filling can be easily controlled. Furthermore, the gate marks left on the outer surface of the molded product can be reduced, and the outer surface of the molded product will not be damaged by the edges.
第１図は本考案装置の正断面図、第２図は本考
案の成形品正面図、第３図は従来装置の正断面
図、第４図は従来の成形品正面図である。
１０……型板、１１……キヤビテイ、１２……
エジエクターピン、１３……入れ子、１４……サ
ブマリンゲート。
FIG. 1 is a front sectional view of the device of the present invention, FIG. 2 is a front view of the molded product of the present invention, FIG. 3 is a front sectional view of the conventional device, and FIG. 4 is a front view of the conventional molded product. 10... Template, 11... Cavity, 12...
Ejector pin, 13...nest, 14...submarine gate.
Claims (1)
入れ子の前端面と、キヤビテイ内周面とに亘つて
開口する如く、所定進入角度でサブマリンゲート
を形成したことを特徴とする射出成形金型のサブ
マリンゲート装置。 A submarine injection mold, characterized in that a nest is placed in a mold plate having a cavity, and a submarine gate is formed at a predetermined approach angle so as to open across the front end surface of the nest and the inner peripheral surface of the cavity. gate device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985150562U JPH0325951Y2 (en) | 1985-09-30 | 1985-09-30 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985150562U JPH0325951Y2 (en) | 1985-09-30 | 1985-09-30 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6258619U JPS6258619U (en) | 1987-04-11 |
| JPH0325951Y2 true JPH0325951Y2 (en) | 1991-06-05 |
Family
ID=31066814
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1985150562U Expired JPH0325951Y2 (en) | 1985-09-30 | 1985-09-30 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0325951Y2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5722911B2 (en) * | 1974-11-20 | 1982-05-15 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5722911U (en) * | 1980-07-10 | 1982-02-05 |
-
1985
- 1985-09-30 JP JP1985150562U patent/JPH0325951Y2/ja not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5722911B2 (en) * | 1974-11-20 | 1982-05-15 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6258619U (en) | 1987-04-11 |
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