JPH0262374B2 - - Google Patents
Info
- Publication number
- JPH0262374B2 JPH0262374B2 JP24516785A JP24516785A JPH0262374B2 JP H0262374 B2 JPH0262374 B2 JP H0262374B2 JP 24516785 A JP24516785 A JP 24516785A JP 24516785 A JP24516785 A JP 24516785A JP H0262374 B2 JPH0262374 B2 JP H0262374B2
- Authority
- JP
- Japan
- Prior art keywords
- speed
- pin
- ejection
- molded product
- ejecting
- 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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/40—Removing or ejecting moulded articles
- B29C45/4005—Ejector constructions; Ejector operating mechanisms
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/76—Measuring, controlling or regulating
- B29C45/7626—Measuring, controlling or regulating the ejection or removal of moulded articles
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は射出成形機における突出ピンによる成
形品の突出制御方法に関する。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a method of controlling ejection of a molded product using an ejection pin in an injection molding machine.
（従来の技術）
射出成形機において、成形品を製造する単位サ
イクルのシーケンス動作の中には、突出ピンある
いは突出プレートなどを突出して成形品を金型か
ら離型する工程があるが、この場合一回の突出し
で成形品は金型キヤビテイから離型するが、往々
にして成形品が突出ピンなどに付着し金型から完
全に取り出すことができないことがある。そこで
突出ピンなどの突出し動作を複数回行なうことに
よつて成形品を金型外へ完全に解放して次回サイ
クルでの型締動作による金型損傷を未然に防止す
ることが行なわれている。(Prior Art) In an injection molding machine, in the sequence operation of a unit cycle for manufacturing a molded product, there is a step of ejecting an ejector pin or a protrusion plate to release the molded product from the mold. The molded product is released from the mold cavity with one ejection, but the molded product often adheres to the ejection pin and cannot be completely removed from the mold. Therefore, the molded product is completely released from the mold by ejecting the ejecting pin or the like multiple times to prevent damage to the mold due to the mold clamping operation in the next cycle.
この突出ピンなどの突出し速度は、金型キヤビ
テイやコアから離型する際に型によつて成形品表
面に生ずるスリ傷や突出ピン自身による成形品の
損傷を防止するため、従来は、第１回目を遅く
し、第２回目以降を速くしていた（特公昭60−
30534号公報参照）。 Conventionally, the ejection speed of the ejector pins, etc. was set at the first speed in order to prevent scratches caused on the surface of the molded product by the mold and damage to the molded product due to the ejector pin itself when the mold is released from the mold cavity or core. The first round was made slower and the second and subsequent rounds were made faster.
(See Publication No. 30534).
（発明が解決しようとする問題点）
上記のような従来例では、第一回目の突出ピン
の速度が、突出開始位置から突出死点までの全区
間において低速であるため、離型工程に要する時
間が充分に短縮されない、という欠点があつた。(Problem to be Solved by the Invention) In the conventional example described above, the speed of the first ejecting pin is low throughout the entire range from the ejection start position to the ejection dead center, so the speed required for the mold release process is low. The drawback was that the time was not shortened sufficiently.
本発明は、かかる問題点を解決するためになさ
れたもので、離型工程が短縮されかつ成形品に損
傷が生じない射出成形機の成形品突出制御方法を
得ることを目的とする。 The present invention was made to solve these problems, and an object of the present invention is to provide a method for controlling the ejection of a molded product from an injection molding machine, which shortens the mold release process and does not cause damage to the molded product.
（問題点を解決するための手段）
本発明は、第一回目の突出ピンの突出動作を加
速度運動にする、というものである。(Means for Solving the Problems) The present invention is to make the first ejection movement of the ejection pin an accelerated movement.
（作 用）
成形品の離型工程において、突出ピンを複数回
突出させて成形品を離型させる際、第一回目の突
出ピンの突出動作は加速度運動になり、初速と終
速が相異なる。(Function) In the process of releasing a molded product, when the ejector pin is ejected multiple times to release the molded product, the first ejection motion of the ejector pin becomes an accelerated motion, and the initial velocity and final velocity are different. .
（実施例）
以下本発明の実施例を、図面を参照しながら説
明する。図面において、１Ａは固定盤、１Ｂは可
動盤であつて、該可動盤１Ｂは、図示しない型締
装置に取り付けられ、図面で左方向へ移動して型
を閉じ、右方向へ移動して型を開く。可動盤１Ｂ
には、シリンダ３が固定され、突出ピン２はシリ
ンダ３内を進退動する突出ピストン４に突出板５
を介して取り付けられている。突出板５には、案
内軸６の一端部が取り付けられており、その他端
部には、位置検出ドツク７が設けられ、該ドツク
７は、移動によつて近接スイツチ８および後退確
認近接スイツチ９に当接する。(Example) Examples of the present invention will be described below with reference to the drawings. In the drawing, 1A is a fixed plate and 1B is a movable plate. The movable plate 1B is attached to a mold clamping device (not shown), moves to the left in the drawing to close the mold, and moves to the right to close the mold. open. Movable plate 1B
The cylinder 3 is fixed to the cylinder 3, and the protruding pin 2 is connected to the protruding piston 4 that moves back and forth within the cylinder 3, and the protruding plate 5
It is attached via. One end of the guide shaft 6 is attached to the protruding plate 5, and a position detection dock 7 is provided at the other end, and when moved, the dock 7 detects a proximity switch 8 and a reverse confirmation proximity switch 9. comes into contact with.
１０は油圧源であつて、電磁比例流量弁１１を
経て流量制御され、コイルの励磁によつて操作さ
れる方向切替弁１２によりシリンダ３の前部室３
ａおよび後部室３ｂに選択的に送られる。 Reference numeral 10 denotes a hydraulic power source, the flow rate of which is controlled via an electromagnetic proportional flow valve 11, and the front chamber 3 of the cylinder 3 is controlled by a direction switching valve 12 operated by excitation of a coil.
a and the rear chamber 3b.
成形品を製造する単位サイクルのシーケンス動
作は、電気回路１３によつて制御される。該電気
回路１３は、近接スイツチ８および後退確認近接
スイツチ９からの信号を受けて方向切替弁１２を
制御する機能を有する。 The sequence of unit cycles for producing a molded article is controlled by an electric circuit 13. The electric circuit 13 has a function of receiving signals from the proximity switch 8 and the reverse confirmation proximity switch 9 to control the direction changeover valve 12.
１４および１５は速度設定器で、切替装置１６
および増幅装置１７を介して電磁比例流量弁１１
を制御している。該切替装置１６は電気回路１３
からの指令を受け、第１回目の突出ピン２の動作
は、速度設定器１４からの信号を通し、第２回目
以降の突出ピン２の動作は、速度設定器１５から
の信号を通すようになつている。 14 and 15 are speed setting devices, and a switching device 16
and an electromagnetic proportional flow valve 11 via an amplifier 17
is under control. The switching device 16 is connected to the electric circuit 13
The first operation of the ejecting pin 2 passes the signal from the speed setting device 14, and the second and subsequent operations of the ejecting pin 2 pass the signal from the speed setting device 15. It's summery.
一方、突出ピン２の後退動作は、上記いずれの
前進動作によりも速い方が単位サイクルの時間短
縮になるため、電磁比例流量弁１１には、最大流
量を流しうるような電流値が与えられるようにな
つている。 On the other hand, if the backward motion of the protruding pin 2 is faster than any of the forward motions mentioned above, the unit cycle time will be shortened. It's getting old.
ところで上記速度設定器１４，１５であるが、
つぎのように設定されている。まず、一方の速度
設定器１４について説明すると、該一方の速度設
定器１４は、突出ピン２の第１回目の突出し動作
を制御するもので、第２図に示すように、突出ピ
ン２の速度が曲線Ａ、ＢまたはスロープＣを描く
ように設定される。これをより具体的に説明する
と、曲線Ａ、ＢおよびスロープＣのいずれの場合
も、突出開始位置P1からある突出位置P2までは、
シリンダ３の全出力の10％の範囲内の速度でスロ
ープを描くように速度設定され、ついで突出位置
P2からは10〜90％の範囲内で加速度運動（曲線
Ａ、Ｂ）または等加速度運動（スロープＣ）する
ように設定され、そして突出死点P3の直前では、
99％以上の速度に設定される。つまり、いずれの
場合も、初速は10％以内、終速は90％以上、そし
てこの間は、10〜90％の範囲内で曲線またはスロ
ープを描くように設定される。 By the way, regarding the speed setters 14 and 15,
It is set as follows. First, one speed setting device 14 will be explained. The one speed setting device 14 controls the first ejection operation of the ejecting pin 2, and as shown in FIG. is set to draw curve A, B or slope C. To explain this more specifically, in each case of curves A, B and slope C, from the protrusion start position P1 to a certain protrusion position P2 ,
The speed is set to draw a slope at a speed within 10% of the full output of cylinder 3, and then the protruding position
From P2 , it is set to perform accelerated motion (curves A, B) or uniformly accelerated motion (slope C) within the range of 10 to 90%, and immediately before the projected dead center P3 ,
Set to speed above 99%. That is, in any case, the initial speed is set to within 10%, the final speed is set to 90% or more, and a curve or slope is set within the range of 10 to 90% during this time.
第２回目以降の突出ピン２の速度は第１回目の
突出ピン２の終速に近い速度で、スロープD1、
D2を描くように設定される。同図において、縦
軸は速度Ｖを表わし、横軸は突出ピンの２の位置
Ｐを表わす。なお、P4、P6はそれぞれ突出ピン
２の第２回目および第３回目の突出開始点（また
は突出ピン２の後退位置）を示し、またP5、P7
は突出死点を示す。 The speed of the ejecting pin 2 for the second and subsequent times is close to the final speed of the ejecting pin 2 for the first time, and the slope D 1 ,
Set to draw D 2 . In the figure, the vertical axis represents the speed V, and the horizontal axis represents the two positions P of the protruding pin. Note that P 4 and P 6 indicate the second and third protrusion starting points of the protrusion pin 2 (or the retreated position of the protrusion pin 2), respectively, and P 5 and P 7
indicates the projected dead center.
第３図は、突出ピン２の他の速度設定例を示す
もので、突出開始点P1から0.5秒後または40mmの
位置Paまでは０％以下の速度で曲線を描くよう
に設定され、それ以降突出死点までは、終速が90
％に達するまで速度が漸次増大するスロープに設
定される。第２回目以降は、第１回目の突出動作
のスロープと同一のスロープに設定される。な
お、Pa1、Pa2はそれぞれ第１回目および第２回
目の突出死点を示し、Pa3、Pa4はそれぞれの回
の突出開始点を示す。 Figure 3 shows another example of the speed setting of the ejecting pin 2, in which it is set so that it draws a curve at a speed of 0% or less from the ejecting start point P 1 to the position Pa 0.5 seconds or 40 mm away. After that, the final speed is 90 until the ejection dead center.
The speed is set to a gradually increasing slope until reaching %. From the second time onwards, the slope is set to be the same as the slope of the first ejection motion. Note that Pa 1 and Pa 2 indicate the first and second ejection dead points, respectively, and Pa 3 and Pa 4 indicate the ejection starting point of each time.
つぎに上記構成に係る射出成形機の作用につい
て述べる。射出成形が完了し、可動盤１Ｂが図面
において右方向へ後退すると、制御用の電気回路
１３の指令を受け方向切替弁１２がシリンダ３の
空部室３ｂに連絡し、突出ピン２を前進させる。
このときの突出ピン２の前進速度は切替装置１６
の作動により、速度設定器１４からの信号を受
け、上述した第２図または第３図に示す第１回目
の設定速度をとる。突出ピン２の前進により案内
軸６の位置検出ドツク７が近接スイツチ８に当接
することによつて電気回路１３に信号が送られ、
突出ピン２の前進が停止した後、方向切替弁１２
が作動して前部室３ａに連絡し突出ピン２は後退
する。このときは速度設定器１５の電流よりもさ
らに大きい電磁比例流量弁１１に最大流量を流し
うるような電流値が与えられ、突出ピン２は速い
速度で後退する。位置検出ドツク７が後退確認近
接スイツチ９に当接すると信号により突出ピン２
の後退は停止し、再び方向切替弁１２が作動して
後部室３ｂに連絡して突出ピン２は前進する。こ
のときは速度設定器１５の信号を受けて第２図ま
たは第３図に示す第２回目の速度設定に従つて前
進する。位置検出ドツク７が近接スイツチ８に当
接すると突出ピン２は停止し、さらに速い速度で
後退する。第３回以降は、第２回目の速度設定に
従つて動作する。 Next, the operation of the injection molding machine having the above configuration will be described. When the injection molding is completed and the movable platen 1B retreats to the right in the drawing, the direction switching valve 12 receives a command from the control electric circuit 13 and communicates with the empty chamber 3b of the cylinder 3 to advance the protruding pin 2.
The forward speed of the protruding pin 2 at this time is determined by the switching device 16.
As a result of the operation, a signal is received from the speed setter 14, and the first set speed shown in FIG. 2 or 3 is set. As the protruding pin 2 advances, the position detection dot 7 of the guide shaft 6 comes into contact with the proximity switch 8, and a signal is sent to the electric circuit 13.
After the protrusion pin 2 stops moving forward, the direction switching valve 12
is activated and communicates with the front chamber 3a, and the protruding pin 2 retreats. At this time, a current value that allows the maximum flow to flow through the electromagnetic proportional flow valve 11, which is larger than the current of the speed setting device 15, is applied, and the protruding pin 2 retreats at a high speed. When the position detection dock 7 comes into contact with the backward confirmation proximity switch 9, the protruding pin 2 is activated by a signal.
The backward movement of the pin 2 is stopped, and the direction switching valve 12 is activated again to communicate with the rear chamber 3b, and the protruding pin 2 moves forward. At this time, upon receiving a signal from the speed setter 15, the vehicle moves forward according to the second speed setting shown in FIG. 2 or 3. When the position detection dock 7 comes into contact with the proximity switch 8, the protruding pin 2 stops and moves back at an even faster speed. From the third time onwards, the operation is performed according to the second speed setting.
（発明の効果）
本発明は、以上からあきらかなように、突出ピ
ンの突出動作を、第一回目は低速の等速度運動に
することなく、加速度運動にするので、突出開始
運動から突出死点に到るまでの時間が短縮されて
いることになる。(Effects of the Invention) As is clear from the above, the present invention makes the ejecting motion of the ejecting pin an accelerated motion instead of a low-speed uniform motion at the first time, so that the ejecting pin moves from the ejecting start motion to the ejecting dead point. This means that the time it takes to reach this point is shortened.
第１図は本発明に係る方法に使用される射出成
形機の略示図、第２図および第３図は突出ピンの
速度設定を示すグラフである。
２……突出ピン。
FIG. 1 is a schematic diagram of an injection molding machine used in the method according to the invention, and FIGS. 2 and 3 are graphs showing the speed setting of the ejector pin. 2...Protruding pin.
Claims (1)
て成形品を離型させる射出成形機の成形品突出制
御方法において、第一回目の突出ピンの突出動作
を加速度運動にすることを特徴とする射出成形機
の成形品突出制御方法。1. A molded product ejection control method for an injection molding machine in which a molded product is released by ejecting an ejector pin multiple times during a unit cycle, characterized in that the first ejection motion of the ejector pin is an accelerated motion. Method for controlling molded product protrusion from a molding machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24516785A JPS62104723A (en) | 1985-10-31 | 1985-10-31 | Projection controlling of molded part of injection molder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24516785A JPS62104723A (en) | 1985-10-31 | 1985-10-31 | Projection controlling of molded part of injection molder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62104723A JPS62104723A (en) | 1987-05-15 |
| JPH0262374B2 true JPH0262374B2 (en) | 1990-12-25 |
Family
ID=17129603
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24516785A Granted JPS62104723A (en) | 1985-10-31 | 1985-10-31 | Projection controlling of molded part of injection molder |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62104723A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021028993A1 (en) * | 2019-08-09 | 2021-02-18 | 株式会社Ｃｏ２資源化研究所 | Transgenic hydrogenophilus bacterium producing lactic acid |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6471722A (en) * | 1987-09-11 | 1989-03-16 | Nissei Plastics Ind Co | Setting of projection starting position of molded form in molding machine |
| DE4003371A1 (en) * | 1990-02-05 | 1991-08-08 | Richard Herbst | METHOD FOR REMOVING A MOLDED PART AND DEVICE FOR IMPLEMENTING THE METHOD |
| JPH04305423A (en) * | 1991-04-01 | 1992-10-28 | Sodick Co Ltd | Method for ejecting molded product of injection molding machine |
| TW271419B (en) * | 1992-10-09 | 1996-03-01 | Sumitom Heavy Industry Ltd | |
| CN102452149B (en) * | 2010-10-28 | 2014-07-09 | 鸿富锦精密工业（深圳）有限公司 | Positioning ejection mechanism and turntable device applying same |
-
1985
- 1985-10-31 JP JP24516785A patent/JPS62104723A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021028993A1 (en) * | 2019-08-09 | 2021-02-18 | 株式会社Ｃｏ２資源化研究所 | Transgenic hydrogenophilus bacterium producing lactic acid |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62104723A (en) | 1987-05-15 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |