JPH0890621A - Injection molding method - Google Patents
Injection molding methodInfo
- Publication number
- JPH0890621A JPH0890621A JP22518594A JP22518594A JPH0890621A JP H0890621 A JPH0890621 A JP H0890621A JP 22518594 A JP22518594 A JP 22518594A JP 22518594 A JP22518594 A JP 22518594A JP H0890621 A JPH0890621 A JP H0890621A
- Authority
- JP
- Japan
- Prior art keywords
- mold
- clamping
- injection
- time
- mold clamping
- 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.)
- Withdrawn
Links
Landscapes
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、ディスク成形等に有用
な射出成形法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an injection molding method useful for disk molding and the like.
【０００２】[0002]
【従来の技術】図３には、ポリカーボネイト等を成形材
料とした従来のディスク成形装置及びその手順を示して
ある。同図において、１は可動型、２はスタンパ、３は
型締シリンダ、４は型締ラム、５は固定型、６は加熱
筒、７はスクリュー、８は射出シリンダ、９は射出ラ
ム、Ｊは溶融樹脂、Ｋは金型キャビティである。2. Description of the Related Art FIG. 3 shows a conventional disk molding apparatus using polycarbonate or the like as a molding material and its procedure. In the figure, 1 is a movable type, 2 is a stamper, 3 is a mold clamping cylinder, 4 is a mold clamping ram, 5 is a fixed mold, 6 is a heating cylinder, 7 is a screw, 8 is an injection cylinder, 9 is an injection ram, and J Is a molten resin, and K is a mold cavity.
【０００３】従来のディスク成形は、 ・型開状態で型締ラム４を前進させ、可動型１を固定型
５にタッチさせるステップ（図３(a)参照） ・型締シリンダ３の内圧を高め、金型（可動型１，固定
型５）に所定の型締力を付与するステップ（図３(b)参
照） ・スクリュー７及び射出ラム９を前進させ、加熱筒６内
の溶融樹脂Ｊを金型キャビティＫに射出するステップ
（図３(c)参照） ・射出樹脂を冷却して固化させるステップ ・可動型１を固定型５から離反させて金型を開き、ディ
スクを取り出すステップ を１サイクルとし、これを順次繰り返してピットが転写
された所望のディスクを得ている。In the conventional disc molding, a step of advancing the mold clamping ram 4 in the mold open state and touching the movable mold 1 with the fixed mold 5 (see FIG. 3 (a))-Increasing the internal pressure of the mold clamping cylinder 3 , Step of applying a predetermined mold clamping force to the mold (movable mold 1, fixed mold 5) (see FIG. 3 (b))-The screw 7 and the injection ram 9 are moved forward, and the molten resin J in the heating cylinder 6 is removed. Step of injecting into the mold cavity K (see FIG. 3 (c))-Step of cooling and solidifying the injection resin-Step of separating the movable mold 1 from the fixed mold 5 to open the mold and take out the disc for 1 cycle Then, this is sequentially repeated to obtain a desired disc having pits transferred.
【０００４】[0004]
【発明が解決しようとする課題】上記従来の射出成形法
では、型締めが完了した後に溶融樹脂の射出を開始する
ようにしているため、とりわけ高い型締力を必要とする
樹脂成形ではこの型締時間が弊害となって成形サイクル
が長くなる嫌いがある。In the above-mentioned conventional injection molding method, since the injection of the molten resin is started after the mold clamping is completed, this mold is used particularly in the resin molding requiring a high mold clamping force. There is a tendency that the tightening time becomes an adverse effect and the molding cycle becomes long.
【０００５】本発明は上記事情に鑑みてなされたもの
で、その目的とするところは、成形サイクルの短縮を図
って生産性を高めることができる射出生成法を提供する
ことにある。The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an injection production method capable of shortening a molding cycle and improving productivity.
【０００６】[0006]
【課題を解決するための手段】上記目的を達成するた
め、請求項１の発明は、型開状態にある可動型を固定型
にタッチさせ、その後に型締めを行う射出成形法におい
て、型締め途中で金型キャビティへの溶融樹脂の射出を
開始することを特徴とする。In order to achieve the above object, the invention of claim 1 is an injection molding method in which a movable mold in a mold open state is touched with a fixed mold, and then the mold is clamped. It is characterized in that the injection of the molten resin into the mold cavity is started on the way.
【０００７】請求項２の発明は、型開状態にある可動型
を固定型にタッチさせ、その後に型締めを行う射出成形
法において、型締めと同時に金型キャビティへの溶融樹
脂の射出を開始することを特徴とする。According to the second aspect of the invention, in the injection molding method in which the movable mold in the mold open state is touched with the fixed mold and then the mold is clamped, the injection of the molten resin into the mold cavity is started simultaneously with the mold clamping. It is characterized by doing.
【０００８】請求項３の発明は、請求項１または２記載
の射出成形法において、金型がディスク成形用金型で、
成形材料がポリカーボネイトであることを特徴とする。According to a third aspect of the present invention, in the injection molding method according to the first or second aspect, the mold is a disk mold.
It is characterized in that the molding material is polycarbonate.
【０００９】[0009]
【作用】本発明では、金型タッチ後に型締めを行う途中
で、或いは型締め開始と同時に金型キャビティへの溶融
樹脂の射出が開始され、これにより型締めと射出とが並
行実施される時間だけ成形サイクルを短縮できる。In the present invention, the injection of the molten resin into the mold cavity is started during the mold clamping after the mold is touched or at the same time as the mold clamping is started, whereby the mold clamping and the injection are performed in parallel. Only the molding cycle can be shortened.
【００１０】[0010]
【実施例】図１には、ポリカーボネイト等を成形材料と
した本発明に係るディスク成形装置及びその手順を示し
てある。同図において、１は可動型、２はスタンパ、３
は型締シリンダ、４は型締ラム、５は固定型、６は加熱
筒、７はスクリュー、８は射出シリンダ、９は射出ラ
ム、Ｊは溶融樹脂、Ｋは金型キャビティである。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows a disk molding apparatus according to the present invention using polycarbonate or the like as a molding material, and its procedure. In the figure, 1 is a movable type, 2 is a stamper, and 3
Is a mold clamping cylinder, 4 is a mold clamping ram, 5 is a fixed mold, 6 is a heating cylinder, 7 is a screw, 8 is an injection cylinder, 9 is an injection ram, J is a molten resin, and K is a mold cavity.
【００１１】本発明のディスク成形は、 ・型開状態で型締ラム４を前進させ、可動型１を固定型
５にタッチさせるステップ（図１(a)参照） ・型締シリンダ３の内圧を高め、金型（可動型１，固定
型５）に所定の型締力を付与すると共に、型締め途中或
いは型締め開始と同時にスクリュー７及び射出ラム９を
前進させ、加熱筒６内の溶融樹脂Ｊを金型キャビティＫ
に射出するステップ（図１(b)参照） ・射出樹脂を冷却して固化させるステップ ・可動型１を固定型５から離反させて金型を開き、ディ
スクを取り出すステップ を１サイクルとし、これを順次繰り返してピットが転写
された所望のディスクを得る。In the disk molding of the present invention, the step of advancing the mold clamping ram 4 in the mold open state and touching the movable mold 1 to the fixed mold 5 (see FIG. 1 (a)) is performed. A predetermined mold clamping force is applied to the mold (movable mold 1, fixed mold 5) and the screw 7 and the injection ram 9 are advanced during mold clamping or at the same time when mold clamping is started to melt the molten resin in the heating cylinder 6. J is the mold cavity K
Step of injecting into the mold (see Fig. 1 (b))-Step of cooling and solidifying the injection resin-Step of separating the movable mold 1 from the fixed mold 5 to open the mold and taking out the disc is defined as one cycle. The desired disk with the pits transferred is obtained by repeating the sequence.
【００１２】上記の金型タッチ，型締め，射出の各動作
を経時的に示すと図２のようになり、型締め途中で射出
を開始する（ａ）の方法では、型締めと射出とが並行し
て実施される時間ｔ１だけ１サイクルの時間が短縮され
る。一方、型締めと同時に射出を開始する（ｂ）の方法
では、型締め時間に相当する時間ｔ２だけ１サイクルの
時間が短縮される。The above-mentioned operations of touching the mold, clamping the mold, and injecting them with time are as shown in FIG. 2. In the method (a) in which the injection is started during the mold clamping, the mold clamping and the injection are performed. The time for one cycle is shortened by the time t1 executed in parallel. On the other hand, in the method (b) in which the injection is started simultaneously with the mold clamping, the time of one cycle is shortened by the time t2 corresponding to the mold clamping time.
【００１３】型締時間が射出時間よりも長い場合は問題
があるが、型締時間が射出時間よりも短い限りは上記の
（ａ）（ｂ）の方法を採用しても射出及び成形自体には
全くの影響がなく、バリ等の成形不良を生じることなく
従来同様のディスクを得ることができる。There is a problem when the mold clamping time is longer than the injection time, but as long as the mold clamping time is shorter than the injection time, the injection and molding itself can be performed even if the above methods (a) and (b) are adopted. Has no effect at all, and a disk similar to the conventional one can be obtained without forming defects such as burrs.
【００１４】ＣＤ等の基板を得るためのディスク成形で
は、通常、型締めに０．３秒、射出に０．４秒程度の時
間を要することから、型締め途中で射出を開始する
（ａ）の方法では１サイクル当たり０．３秒未満の時間
短縮が図れ、一方、型締めと同時に射出を開始する
（ｂ）の方法では１サイクル当たり０．３秒の時間短縮
が図れることになる。In disk molding for obtaining a substrate such as a CD, it usually takes 0.3 seconds for mold clamping and 0.4 seconds for injection, so injection is started during mold clamping (a). With the method (1), the time can be shortened to less than 0.3 seconds per cycle, while on the other hand, the method (b) in which injection is started at the same time as the mold clamping can be shortened to 0.3 seconds per cycle.
【００１５】１サイクル当たりの短縮時間は短いが、デ
ィスク成形のように１サイクルが短時間で完了する成形
では、短縮時間を１日換算するとかなりの増産が見込め
ることになり、従来に比べて生産性が格段向上する。Although the shortening time per cycle is short, in molding such as disk molding where one cycle is completed in a short time, a considerable increase in production can be expected if the shortened time is converted into one day, and the production is increased compared to the conventional production. The character is greatly improved.
【００１６】尚、上記実施例では、直圧式の型締機構を
例示したが、トグル式の型締機構を用いる場合でも同様
の効果が得られる。また、上記実施例では、ポリカーボ
ネイトを成形材料とするディスク成形を例にあげて説明
したが、アクリル，ポリ塩化ビニル等を成形材料とした
ディスク成形は勿論、ディスク以外の一般成形にも幅広
く適用でき同様の効果を得ることができる。In the above embodiment, the direct pressure type mold clamping mechanism is exemplified, but the same effect can be obtained even when the toggle type mold clamping mechanism is used. Further, in the above-mentioned embodiment, the description has been given by taking the disk molding using the polycarbonate as the molding material as an example, but it can be widely applied not only to the disk molding using the molding material such as acrylic or polyvinyl chloride but also to the general molding other than the disk. The same effect can be obtained.
【００１７】[0017]
【発明の効果】以上詳述したように、本発明によれば、
型締めと射出とが並行実施される時間だけ成形サイクル
を短縮でき、従来に比べて生産性を格段向上させること
ができる。As described in detail above, according to the present invention,
The molding cycle can be shortened by the time when the mold clamping and the injection are performed in parallel, and the productivity can be significantly improved as compared with the conventional case.
【図１】本発明に係るディスク成形装置及びその手順を
示す図FIG. 1 is a diagram showing a disk molding apparatus and its procedure according to the present invention.
【図２】ディスク成形のタイミングチャート[Fig. 2] Timing chart of disk molding
【図３】従来のディスク成形装置及びその手順を示す図FIG. 3 is a diagram showing a conventional disc molding apparatus and its procedure.
１…可動型、２…スタンパ、３…型締シリンダ、４…型
締ラム、５…固定型、６…加熱筒、７…スクリュー、８
…射出シリンダ、９…射出ラム、Ｊ…溶融樹脂、Ｋ…金
型キャビティ。1 ... Movable type, 2 ... Stamper, 3 ... Mold clamping cylinder, 4 ... Mold clamping ram, 5 ... Fixed mold, 6 ... Heating cylinder, 7 ... Screw, 8
... injection cylinder, 9 ... injection ram, J ... molten resin, K ... mold cavity.
Claims (3)
させ、その後に型締めを行う射出成形法において、 型締め途中で金型キャビティへの溶融樹脂の射出を開始
する、 ことを特徴とする射出成形法。1. An injection molding method in which a movable mold in a mold open state is touched with a fixed mold and then mold clamping is performed, injecting molten resin into a mold cavity is started during mold clamping. Injection molding method.
させ、その後に型締めを行う射出成形法において、 型締めと同時に金型キャビティへの溶融樹脂の射出を開
始する、 ことを特徴とする射出成形法。2. An injection molding method of touching a fixed mold with a movable mold in a mold open state, and then performing mold clamping, injecting molten resin into a mold cavity simultaneously with mold clamping. Injection molding method.
がポリカーボネイトである、 ことを特徴とする請求項１または２記載の射出成形法。3. The injection molding method according to claim 1, wherein the mold is a disk molding mold and the molding material is polycarbonate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22518594A JPH0890621A (en) | 1994-09-20 | 1994-09-20 | Injection molding method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22518594A JPH0890621A (en) | 1994-09-20 | 1994-09-20 | Injection molding method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0890621A true JPH0890621A (en) | 1996-04-09 |
Family
ID=16825301
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP22518594A Withdrawn JPH0890621A (en) | 1994-09-20 | 1994-09-20 | Injection molding method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0890621A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102015004424A1 (en) | 2014-04-09 | 2015-10-15 | Fanuc Corporation | Control for an injection molding machine |
-
1994
- 1994-09-20 JP JP22518594A patent/JPH0890621A/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102015004424A1 (en) | 2014-04-09 | 2015-10-15 | Fanuc Corporation | Control for an injection molding machine |
| US9744705B2 (en) | 2014-04-09 | 2017-08-29 | Fanuc Corporation | Controller for injection molding machine |
| DE102015004424B4 (en) | 2014-04-09 | 2019-05-29 | Fanuc Corporation | Control for an injection molding machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 20011120 |