JPH06126719A - Injection mold - Google Patents
Injection moldInfo
- Publication number
- JPH06126719A JPH06126719A JP27616892A JP27616892A JPH06126719A JP H06126719 A JPH06126719 A JP H06126719A JP 27616892 A JP27616892 A JP 27616892A JP 27616892 A JP27616892 A JP 27616892A JP H06126719 A JPH06126719 A JP H06126719A
- Authority
- JP
- Japan
- Prior art keywords
- mold
- die
- fixed
- movable
- resistance
- 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.)
- Pending
Links
Landscapes
- Moulds For Moulding Plastics Or The Like (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
- Producing Shaped Articles From Materials (AREA)
- Moulds, Cores, Or Mandrels (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は３プレートの射出成形金
型に関するものである。FIELD OF THE INVENTION The present invention relates to a three-plate injection molding die.
【０００２】[0002]
【従来の技術】従来、この種の射出成形は、型閉をスム
ーズに行うことや金型保護を目的として、型閉速度を可
動型が動き出す初期は低速、次に前記可動型初期低速終
了位置から中間型の直前まで高速、次に前記可動型の中
間型直前位置から中間型に接触するまで低速、次に前記
可動型が中間型に接触した位置から固定型直前まで高
速、最後に前記中間型の固定型直前位置から前記中間型
が前記固定型に接触するまで低速というように型閉の速
度を変えて行われていた。2. Description of the Related Art Conventionally, in this type of injection molding, for the purpose of smoothly closing the mold and protecting the mold, the mold closing speed is a low speed at the beginning when the movable mold moves, and then the movable mold initial low speed end position. To just before the intermediate mold, then low speed from the position immediately before the intermediate mold of the movable mold to the intermediate mold, then high speed from the position where the movable mold contacts the intermediate mold to just before the fixed mold, and finally the intermediate mold. The mold closing speed is changed so that the intermediate mold comes to a low speed from the position immediately before the fixed mold to contact with the fixed mold.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、成形時
発生するカスやホコリが、金型のガイドピン等に付着し
て、その摩擦抵抗などで型閉がスムーズに行えず、可動
型が中間型に接触する前に前記中間型が固定型の方に動
き出す現象が発生する。前記現象が発生すると、型閉の
際、可動型位置で高速低速の切換位置を決定しているた
め、高速で可動型と中間型が接触してしまい型面に異物
があった時など前記異物をつぶし、型面にキズつけるな
ど金型保護されない恐れがあった。However, the scraps and dust generated during the molding adhere to the guide pins of the mold, and the friction resistance causes the mold to not be closed smoothly, so that the movable mold becomes an intermediate mold. A phenomenon occurs in which the intermediate mold starts to move toward the fixed mold before contact. When the above phenomenon occurs, when the mold is closed, the high-speed and low-speed switching position is determined by the movable mold position, so that when the movable mold and the intermediate mold come into contact with each other at a high speed and there is a foreign substance on the mold surface, There is a risk that the mold will not be protected, such as crushing and scratching the mold surface.
【０００４】[0004]
【課題を解決するための手段】上記課題を解決するため
に本発明は、射出成形用３プレート金型において、固定
型に固定され、型が開いた状態の中間型まで伸びている
抵抗棒を設け、抵抗棒の先端はテーパ部を持ち、このテ
ーパ部を挟むようにボールプランジャーを中間型に設け
たことを特徴とする。In order to solve the above problems, the present invention provides a three-plate mold for injection molding, which includes a resistance rod fixed to a fixed mold and extending to an intermediate mold in a state where the mold is opened. It is characterized in that the tip of the resistance rod has a tapered portion, and the ball plunger is provided in an intermediate mold so as to sandwich the tapered portion.
【０００５】[0005]
【作用】この発明の射出成形用金型によれば、型閉の際
可動型と中間型が接触した後に前記中間型と固定型が接
触し完了することが可能になり、高速で可動型と中間型
が接触することはなくなるため、金型保護ができる。According to the injection molding die of the present invention, after the movable die and the intermediate die are brought into contact with each other when the die is closed, the intermediate die and the fixed die can be brought into contact with each other and completed. Since the intermediate dies do not come into contact with each other, the dies can be protected.
【０００６】[0006]
【実施例】以下に本発明の実施例を図面に基づき説明す
る。まず図１において、金型は固定型１と中間型２と可
動型３を主体として構成されており、金型開閉の際、中
間型２をスライドさせるためのサポートピン４ａ、４ｂ
が中間型２、固定型１をそれぞれ貫通し存在する。また
中間型２及び可動型３の外面には中間型をスライドさせ
るための引張リンク５ａ、５ｂが設けられている。さら
に中間型２の内部には可動型３との位置合わせ用のガイ
ドピン６ａ、６ｂが設けられている。また固定型１外面
中心には、中間型２の中心付近まで達し、先端がテーパ
で小さくなった抵抗棒７が固定されており、さらに中間
型２の外面には前記抵抗棒７をはさみ込むような形でボ
ールプランジャー８が設けられている。Embodiments of the present invention will be described below with reference to the drawings. First, in FIG. 1, the mold is mainly composed of a fixed mold 1, an intermediate mold 2, and a movable mold 3, and support pins 4a, 4b for sliding the intermediate mold 2 when the mold is opened and closed.
Exists through the intermediate mold 2 and the fixed mold 1, respectively. Further, pulling links 5a, 5b for sliding the intermediate die are provided on the outer surfaces of the intermediate die 2 and the movable die 3. Further, inside the intermediate die 2, guide pins 6a and 6b for alignment with the movable die 3 are provided. Further, a resistance rod 7 is fixed to the outer surface center of the fixed mold 1 and reaches the vicinity of the center of the intermediate mold 2 and has a tapered tip, and the resistance rod 7 is inserted into the outer surface of the intermediate mold 2. The ball plunger 8 is provided in an arbitrary shape.
【０００７】この抵抗棒及びボールプランジャー８ａ、
８ｂは、図２に示すように型閉の際、可動型３が中間型
２に接触する前に中間型２が固定型に動かないようにす
るためで、したがって抵抗棒７の先端テーパの途中にボ
ールプランジャー８ａ、８ｂのボール９が触れるように
セットするものである。また抵抗力の調整はボールプラ
ンジャー８ａ、８ｂの位置で行う。The resistance rod and the ball plunger 8a,
8b is for preventing the intermediate die 2 from moving to the fixed die before the movable die 3 contacts the intermediate die 2 when the die is closed as shown in FIG. It is set so that the ball 9 of the ball plungers 8a and 8b touches. The resistance force is adjusted at the positions of the ball plungers 8a and 8b.
【０００８】次の本発明の金型を用い金型開閉した際の
金型の動きについて説明する。図３は、従来の金型閉方
法で、可動型３が中間型２のガイドピン６ａ、６ｂに接
触したところで中間型２が固定型１の方へ動き出し高速
で可動型３と中間型２が接触するのがわかる。Next, the movement of the mold when the mold of the present invention is opened and closed will be described. FIG. 3 shows a conventional mold closing method. When the movable die 3 comes into contact with the guide pins 6a and 6b of the intermediate die 2, the intermediate die 2 starts to move toward the fixed die 1 and the movable die 3 and the intermediate die 2 move at high speed. You can see it touching.
【０００９】図４は、本発明による金型閉方法で、可動
型３が中間型２のガイドピン６ａ、６ｂに接触しても抵
抗棒７及びボールプランジャー８により抵抗が作られ、
固定型の方へ動くことはなく、続いて、可動型３が中間
型２に接触し、ある圧力以上になるとボールプランジャ
ー８のボール９が挿上げられ中間型２が固定型の方へ動
き出すのがわかる。FIG. 4 shows a mold closing method according to the present invention. Even if the movable mold 3 comes into contact with the guide pins 6a and 6b of the intermediate mold 2, resistance is produced by the resistance rod 7 and the ball plunger 8.
The movable die 3 does not move toward the fixed die, and subsequently, when the movable die 3 comes into contact with the intermediate die 2 and exceeds a certain pressure, the ball 9 of the ball plunger 8 is inserted and the intermediate die 2 starts to move toward the fixed die. I understand.
【００１０】図５は、本発明の金型を用いて中間型２の
内部で可動型３の方向に０．２ｍｍ以下の細いピン１０
を有した際の金型閉を示したもので、前記ピン１０の直
前まで高速で型閉を行い、ピン１０が可動型３の内部に
挿入される、すなわち可動型３が中間型２に接触するま
でを低速、その後高速で閉じるということが可能にな
る。FIG. 5 shows a thin pin 10 of 0.2 mm or less in the direction of the movable die 3 inside the intermediate die 2 using the die of the present invention.
It shows the mold closing when the pin 10 is held. The mold 10 is closed at a high speed until just before the pin 10, and the pin 10 is inserted into the movable mold 3, that is, the movable mold 3 contacts the intermediate mold 2. It will be possible to close at low speed and then at high speed.
【００１１】なお、図５（ｂ）に成形品が入るキャビテ
ィ３ａとそこに至る樹脂の流路２ａ、１ａを示す。Incidentally, FIG. 5 (b) shows a cavity 3a in which a molded product is inserted and resin flow paths 2a and 1a leading to the cavity 3a.
【００１２】[0012]
【発明の効果】以上説明したようにこの発明による射出
成形用金型によれば、固定型と中間型との間に可動型と
前記中間型との抵抗よりも大きくなるような抵抗を設け
ることにより型閉を可動型と中間型が閉じた後、中間型
と固定型が閉じることを可能にし、型閉の際の金型を保
護する効果がある。As described above, according to the injection molding die of the present invention, the resistance which is larger than the resistance between the movable die and the intermediate die is provided between the fixed die and the intermediate die. This makes it possible to close the mold and the fixed mold after the movable mold and the intermediate mold are closed, and has an effect of protecting the mold when the mold is closed.
【図１】本発明の射出成形用金型の実施例を示す正面図
である。FIG. 1 is a front view showing an embodiment of an injection molding die of the present invention.
【図２】図１の要部拡大図である。FIG. 2 is an enlarged view of a main part of FIG.
【図３】（ａ）、（ｂ）、（ｃ）は従来の金型閉方法を
示した図である。3 (a), (b) and (c) are views showing a conventional mold closing method.
【図４】（ａ）、（ｂ）、（ｃ）は本発明の金型閉方法
を示した図である。4 (a), (b) and (c) are views showing a mold closing method of the present invention.
【図５】（ａ）、（ｂ）、（ｃ）は本発明の応用例を示
した図である。5 (a), (b), and (c) are diagrams showing an application example of the present invention.
１ 固定型 ２ 中間型 ３ 可動型 ４ａ、４ｂ サポートピン ５ａ、５ｂ 引張リンク ６ａ、６ｂ ガイドピン ７ 抵抗棒 ８ａ、８ｂ ボールプランジャー ９ａ、９ｂ ボール部 １０ 細ピン 1 Fixed type 2 Intermediate type 3 Movable type 4a, 4b Support pin 5a, 5b Tensile link 6a, 6b Guide pin 7 Resistance rod 8a, 8b Ball plunger 9a, 9b Ball part 10 Thin pin
───────────────────────────────────────────────────── フロントページの続き (72)発明者 渡邊 俊二 東京都江東区亀戸６丁目31番１号 セイコ ー電子工業株式会社内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Shunji Watanabe 6-31-1, Kameido, Koto-ku, Tokyo Seiko Electronics Industry Co., Ltd.
Claims (1)
トピンを貫通させるガイド孔を設けた中間型と、該中間
型に固定された引張リンクをガイドにスライドする可動
型の３型からなる射出成形用金型において、前記固定型
に固定され、型が開いた状態の前記中間型まで伸びてい
る抵抗棒を設け、該抵抗棒の先端はテーパ部を持ち、該
テーパ部を挟むように、ボールプランジャーを前記中間
型に設けたことを特徴とする射出成形用金型。1. A fixed die, an intermediate die provided with a guide hole through which a support pin fixed to the fixed die penetrates, and a movable die that slides a tension link fixed to the intermediate die as a guide. In this injection molding die, a resistance rod fixed to the fixed die and extending to the intermediate die in a state where the die is opened is provided, and the tip end of the resistance rod has a tapered portion, and the tapered portion is sandwiched. A mold for injection molding, characterized in that a ball plunger is provided on the intermediate mold.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27616892A JPH06126719A (en) | 1992-10-14 | 1992-10-14 | Injection mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27616892A JPH06126719A (en) | 1992-10-14 | 1992-10-14 | Injection mold |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH06126719A true JPH06126719A (en) | 1994-05-10 |
Family
ID=17565681
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP27616892A Pending JPH06126719A (en) | 1992-10-14 | 1992-10-14 | Injection mold |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH06126719A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4875663A (en) * | 1987-06-11 | 1989-10-24 | Clecim | Closure device with cleaning of a pouring hole |
| CN104842515A (en) * | 2015-05-29 | 2015-08-19 | 昆山立讯精密模具有限公司 | Three-plate mold |
| JP2018167579A (en) * | 2017-03-29 | 2018-11-01 | 住友重機械工業株式会社 | Injection molding machine |
-
1992
- 1992-10-14 JP JP27616892A patent/JPH06126719A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4875663A (en) * | 1987-06-11 | 1989-10-24 | Clecim | Closure device with cleaning of a pouring hole |
| CN104842515A (en) * | 2015-05-29 | 2015-08-19 | 昆山立讯精密模具有限公司 | Three-plate mold |
| JP2018167579A (en) * | 2017-03-29 | 2018-11-01 | 住友重機械工業株式会社 | Injection molding machine |
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