JPH0356655B2 - - Google Patents
Info
- Publication number
- JPH0356655B2 JPH0356655B2 JP3077886A JP3077886A JPH0356655B2 JP H0356655 B2 JPH0356655 B2 JP H0356655B2 JP 3077886 A JP3077886 A JP 3077886A JP 3077886 A JP3077886 A JP 3077886A JP H0356655 B2 JPH0356655 B2 JP H0356655B2
- Authority
- JP
- Japan
- Prior art keywords
- molding
- stable
- conditions
- molding conditions
- initial
- 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
- 238000000465 moulding Methods 0.000 claims description 85
- 238000001746 injection moulding Methods 0.000 claims description 11
- 230000001105 regulatory effect Effects 0.000 description 7
- 239000011347 resin Substances 0.000 description 5
- 229920005989 resin Polymers 0.000 description 5
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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
- B29C45/76—Measuring, controlling or regulating
- B29C45/766—Measuring, controlling or regulating the setting or resetting of moulding conditions, e.g. before starting a cycle
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Description
【発明の詳細な説明】
(イ) 産業上の利用分野
本発明は、射出成形機の制御装置に関するもの
である。DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to a control device for an injection molding machine.
(ロ) 従来の技術
射出成形機による射出成形開始時（立上時）に
は、射出速度、圧力などの成形条件を徐々に変化
させて通常の安定成形条件に移行させることが必
要である。これは、成形開始時は樹脂温度が不安
定であり、この状態で最初から安定成形条件で成
形を行うと、ばりの発生、金型の破損などの不具
合を発生する可能性があるからである。このた
め、成形開始時は溶融樹脂を完全には金型へ充て
んしないいわゆるシヨートシヨツト成形を行い、
これから徐々に通常の安定成形条件に移行させ
る。この安定成形条件への移行の際の成形条件の
変更は作業者の手動調整によつて行われていた。(B) Conventional technology When starting injection molding using an injection molding machine (starting up), it is necessary to gradually change molding conditions such as injection speed and pressure to bring the molding conditions to normal stable molding conditions. This is because the resin temperature is unstable at the start of molding, and if molding is performed under stable molding conditions from the beginning, problems such as burrs and mold damage may occur. . For this reason, we perform so-called short shot molding in which the mold is not completely filled with molten resin at the beginning of molding.
From now on, the molding conditions will be gradually shifted to normal stable molding conditions. Changes in molding conditions upon transition to stable molding conditions have been made by manual adjustment by an operator.
(ハ) 発明が解決しようとする問題点
しかし、従来は上記のような成形開始時の成形
条件の変更を作業者の操作によつて行うようにし
てあつたため、安定成形条件に移行するまでに長
い時間がかかり生産性が悪く、また樹脂、エネル
ギーなどの損失も大きいという問題点がある。本
発明は、このような問題点を解決することを目的
としている。(c) Problems to be solved by the invention However, in the past, the molding conditions at the start of molding as described above were changed by an operator's operation, so it was difficult to change the molding conditions until stable molding conditions were reached. There are problems in that it takes a long time and productivity is low, and there is also a large loss of resin, energy, etc. The present invention aims to solve these problems.
(ニ) 問題点を解決するための手段
本発明は、成形開始時に初期成形条件から安定
成形条件まで自動的に成形条件を変化させること
により、上記問題点を解決する。すなわち、本発
明による射出成形機の制御装置は、初期成形条件
を設定するための初期成形条件設定器と、安定成
形条件を設定するための安定成形条件設定器と、
設定された初期成形条件及び安定成形条件を記憶
する記憶装置と、安定成形条件による成形を開始
するシヨツト回数を設定するためのシヨツト回数
設定器と、シヨツト回数設定器によつて設定され
たシヨツト回数の間に成形条件を初期成形条件設
定値から安定成形条件設定値まで段階的に変化さ
せる演算器と、演算器からの信号に基づいて射出
成形機の作動を制御する信号を出力する制御器
と、を有している。(d) Means for solving the problems The present invention solves the above problems by automatically changing molding conditions from initial molding conditions to stable molding conditions at the start of molding. That is, the control device for an injection molding machine according to the present invention includes an initial molding condition setter for setting initial molding conditions, a stable molding condition setter for setting stable molding conditions,
A storage device for storing the set initial molding conditions and stable molding conditions, a shot number setting device for setting the number of shots to start molding under the stable molding conditions, and a number of shots set by the shot number setting device. a computing unit that changes the molding conditions in stages from an initial molding condition set value to a stable molding condition set value; and a controller that outputs a signal to control the operation of the injection molding machine based on the signal from the computing unit. ,have.
(ホ) 作用
成形開始時に、初期成形条件、安定成形条件及
びシヨツト回数をそれぞれ設定器に設定するだけ
でよい。これにより、射出形成機に指令される成
形条件は演算器によつて初期成形条件から段階的
に変化し、設定されたシヨツト回数後には安定成
形条件となるように変化し、以後は安定成形条件
による成形が続行される。これにより作業者を必
要とすることなく安定した形成開始時の成形条件
の変更を行うことができる。(e) Effect When starting molding, it is only necessary to set the initial molding conditions, stable molding conditions, and number of shots on the setting device. As a result, the molding conditions commanded to the injection molding machine are changed step by step from the initial molding conditions by the computing unit, and after the set number of shots, the molding conditions are changed to stable molding conditions, and from then on, the molding conditions are stable. The molding continues. This makes it possible to stably change the molding conditions at the start of forming without requiring an operator.
(ヘ) 実施例
以下、本発明の実施例を添付図面の第１図に基
づいて説明する。(F) Embodiments Hereinafter, embodiments of the present invention will be described based on FIG. 1 of the accompanying drawings.
射出成形機のスクリユー１０は射出シリンダ１
２によつて前進し、油圧モータ１４によつて回転
駆動されるように構成されている。なお、スクリ
ユー１０の後退はスクリユー１０の先端側にため
られる溶融樹脂の圧力によつて行われる。射出シ
リンダ１２及び油圧モータ１４への油圧の供給は
方向切換弁１６によつて制御される。方向切換弁
１６は供給される作動油は、オイルポンプ１８の
吐出油を流量調整弁２０及び圧力調整弁２２によ
つて調整したものである。流量調整弁２０及び圧
力調整弁２２の作動は制御器２４からの信号によ
つて制御される。制御器２４は演算器２６から入
力される成形条件に基づいて作動する。演算器２
６にはシヨツト回数設定器２８及び記憶装置３０
からの信号が入力されており、この記憶装置３０
には安定成形条件設定器３２及び初期成形条件設
定器３４からの信号が記憶される。 The screw 10 of the injection molding machine is the injection cylinder 1
2, and is configured to be rotated by a hydraulic motor 14. Note that the screw 10 is moved back by the pressure of the molten resin accumulated on the tip side of the screw 10. The supply of hydraulic pressure to the injection cylinder 12 and the hydraulic motor 14 is controlled by a directional valve 16. The hydraulic oil supplied to the directional switching valve 16 is the oil discharged from the oil pump 18 regulated by a flow rate regulating valve 20 and a pressure regulating valve 22 . The operation of the flow rate regulating valve 20 and the pressure regulating valve 22 is controlled by signals from a controller 24. The controller 24 operates based on molding conditions input from the calculator 26. Arithmetic unit 2
6 includes a shot count setting device 28 and a storage device 30.
A signal is input from the storage device 30.
Signals from the stable molding condition setter 32 and the initial molding condition setter 34 are stored in .
次にこの実施例の作用について説明する。ま
ず、安定成形条件設定器３２、所期成形条件設定
器３４及びシヨツト回数設定器２８に条件の設定
を行う。安定条件設定器３２には連続して良品の
成形を行うことができる安定成形条件を設定す
る。初期成形条件設定器３４にはいわゆるシヨー
トシヨツト成形となるような初期成形条件を設定
する。また、シヨツト回数設定器２８には第１回
目の成形から安定成形条件に切換わるまでのシヨ
ツト回数（例えば、Ｎ）を設定する。安定成形条
件設定器３２及び初期成形条条件設定器３４に設
定された成形条件は記憶装置３０に記憶され、こ
の記憶された成形条件は演算器２６に入力され
る。演算器２６にはシヨツト回数設定器２８から
のシヨツト回数Ｎも入力されており、これにより
演算器２６は次のような演算を行う。すなわち、
安定成形条件値と初期成形条件設定値との差をＮ
等分し、これを各シヨツト毎に前回の設定値に加
算していく。従つて、演算器２６から制御器２４
に出力される信号は各シヨツト毎に段階的に初期
成形条件から安定成形条件に変化していくことに
なる。最終的にＮシヨツト目に安定成形条件設定
器３２に設定された安定成形条件に達し、その後
は同じ安定成形条件が出力される。制御器２４は
演算器２６からの信号に基づいて流量調整弁２０
及び圧力調整弁２２の作動を制御し、指令された
とおりの成形条件を実現させる。これにより成形
開始時には初期成形条件から安定成形条件へ段階
的にかつ自動的に変化し、Ｎシヨツト回数以後か
ら通常の安定成形を行うことができるようにな
る。 Next, the operation of this embodiment will be explained. First, conditions are set in the stable molding condition setter 32, the desired molding condition setter 34, and the shot number setter 28. Stable molding conditions are set in the stable condition setting device 32 so that good products can be molded continuously. Initial molding conditions for so-called short shot molding are set in the initial molding condition setter 34. Further, the number of shots (for example, N) from the first molding until switching to stable molding conditions is set in the shot number setting device 28. The molding conditions set in the stable molding condition setter 32 and the initial molding condition setter 34 are stored in the storage device 30, and the stored molding conditions are input to the calculator 26. The number of shots N from the shot number setter 28 is also input to the calculator 26, and the calculator 26 performs the following calculations. That is,
The difference between the stable molding condition value and the initial molding condition setting value is N.
Divide it into equal parts and add this to the previous setting value for each shot. Therefore, from the computing unit 26 to the controller 24
The signal outputted from the initial molding condition to the stable molding condition changes step by step for each shot. Finally, the stable molding conditions set in the stable molding condition setter 32 are reached at the Nth shot, and thereafter the same stable molding conditions are output. The controller 24 controls the flow rate regulating valve 20 based on the signal from the calculator 26.
and controls the operation of the pressure regulating valve 22 to realize the molding conditions as instructed. As a result, at the start of molding, the initial molding conditions are changed stepwise and automatically to stable molding conditions, and normal stable molding can be performed after N shots.
(ト) 発明の効果
以上説明してきたように、本発明によると、初
期成形条件から安定成形条件に自動的にかつ段階
的に変化させるようにしたので、成形開始に必要
な時間を短縮することができ生産性が向上し、作
業者が不要となり、また樹脂、エネルギーなどの
損失も減少する。(g) Effects of the invention As explained above, according to the present invention, the initial molding conditions are automatically and stepwise changed to stable molding conditions, so the time required to start molding can be shortened. This improves productivity, eliminates the need for workers, and reduces loss of resin, energy, etc.
第１図は本発明による射出成形機の制御装置を
示す図である。
２４……制御器、２６……演算器、２８……シ
ヨツト回数設定器、３０……記憶装置、３２……
安定成形条件設定器、３４……初期成形条件設定
器。
FIG. 1 is a diagram showing a control device for an injection molding machine according to the present invention. 24...Controller, 26...Arithmetic unit, 28...Shot number setting device, 30...Storage device, 32...
Stable molding condition setter, 34...Initial molding condition setter.
Claims (1)
設定器と、安定成形条件を設定するための安定成
形条件設定器と、設定された初期成形条件及び安
定成形条件を記憶する記憶装置と、安定成形条件
による成形を開始するシヨツト回数を設定するた
めのシヨツト回数設定器と、シヨツト回数設定器
によつて設定されたシヨツト回数の間に成形条件
を初期成形条件設定値から安定成形条件設定値ま
で段階的に変化させる演算器と、演算器からの信
号に基づいて射出成形機の作動を制御する信号を
出力する制御器と、を有する射出成形機の制御装
置。1. An initial molding condition setter for setting initial molding conditions, a stable molding condition setter for setting stable molding conditions, a storage device for storing the set initial molding conditions and stable molding conditions, and a stable molding condition setter for setting stable molding conditions. A shot number setting device is used to set the number of shots to start molding according to the conditions, and the molding conditions are set in stages from the initial molding condition setting value to the stable molding condition setting value between the number of shots set by the shot number setting device. 1. A control device for an injection molding machine, comprising: a calculation unit that changes the operation of the injection molding machine; and a controller that outputs a signal for controlling the operation of the injection molding machine based on a signal from the calculation unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61030778A JPS62189131A (en) | 1986-02-17 | 1986-02-17 | Controller for injection molding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61030778A JPS62189131A (en) | 1986-02-17 | 1986-02-17 | Controller for injection molding machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62189131A JPS62189131A (en) | 1987-08-18 |
| JPH0356655B2 true JPH0356655B2 (en) | 1991-08-28 |
Family
ID=12313136
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61030778A Granted JPS62189131A (en) | 1986-02-17 | 1986-02-17 | Controller for injection molding machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62189131A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01249316A (en) * | 1988-03-30 | 1989-10-04 | Mitsubishi Metal Corp | Injection molding device |
| JP2593533B2 (en) * | 1988-11-09 | 1997-03-26 | 東芝機械株式会社 | Fully automatic operation system of injection molding machine |
| JPH0777749B2 (en) * | 1990-05-18 | 1995-08-23 | 日精樹脂工業株式会社 | Control method and apparatus for injection molding machine |
| JP2018111297A (en) * | 2017-01-13 | 2018-07-19 | 株式会社日本製鋼所 | Method for operating injection molding machine |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58150922A (en) * | 1982-03-03 | 1983-09-07 | Nippon Telegr & Teleph Corp <Ntt> | Optical connector |
| JPS6063808U (en) * | 1983-10-05 | 1985-05-04 | 山一電機工業株式会社 | Plug for optical conductor |
| JPS6082605U (en) * | 1983-11-14 | 1985-06-07 | 古河電気工業株式会社 | Plastic fiber cord with connector |
-
1986
- 1986-02-17 JP JP61030778A patent/JPS62189131A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62189131A (en) | 1987-08-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5182716A (en) | Injection molding controller with controlled variable learning | |
| US5062785A (en) | Injection molding controller with process variable learning | |
| US5030395A (en) | Method and an apparatus for pressure control of a motor-operated injection-molding machine | |
| US5258918A (en) | Selectable control function injection molding controller | |
| US5012426A (en) | Method and apparatus for controlling injection compression molding | |
| JP2942605B2 (en) | Mold opening / closing control device such as injection molding machine | |
| EP0264453B1 (en) | Injection molding machine capable of changing the acceleration/deceleration time for injection speed | |
| JPH0356655B2 (en) | ||
| US4744743A (en) | Means for pressure and quantity control of the hydraulic drives of an injection moulding machine | |
| JP2649300B2 (en) | Injection control method for injection molding machine | |
| JPS5811128A (en) | Control system for injection molding machine | |
| JPS63109035A (en) | Method and apparatus for controlling first molding transition in injection molder | |
| JPH0366140B2 (en) | ||
| JPH0422130B2 (en) | ||
| JP3206846B2 (en) | Control method of injection molding machine | |
| JPS6174808A (en) | Purging method of molding machine | |
| JPS60108153A (en) | Method for controlling injection speed | |
| JPS5692036A (en) | Injection molder | |
| JPH0667581B2 (en) | Control method of injection filling pressure | |
| JP2652274B2 (en) | Holding pressure control method in electric injection molding machine | |
| JPH06855A (en) | Molding condition setting device | |
| JPH0688298B2 (en) | Method of controlling press process of press molding machine | |
| JPH0298418A (en) | Automatic setting of injection measuring stroke and device therefor | |
| JPH0356887B2 (en) | ||
| JPH04107022U (en) | Injection molding machine control device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |