JPH0531770A - Injection molding system - Google Patents

Injection molding system

Info

Publication number
JPH0531770A
JPH0531770A JP41211890A JP41211890A JPH0531770A JP H0531770 A JPH0531770 A JP H0531770A JP 41211890 A JP41211890 A JP 41211890A JP 41211890 A JP41211890 A JP 41211890A JP H0531770 A JPH0531770 A JP H0531770A
Authority
JP
Japan
Prior art keywords
injection
gate
mold
injection molding
molding machine
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.)
Granted
Application number
JP41211890A
Other languages
Japanese (ja)
Other versions
JP3160626B2 (en
Inventor
Masayoshi Onishi
正義 大西
Kunitoshi Ohashi
邦敏 大橋
Osamu Kusumoto
治 楠本
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Maxell Seiki Ltd
Original Assignee
Maxell Seiki Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Maxell Seiki Ltd filed Critical Maxell Seiki Ltd
Priority to JP41211890A priority Critical patent/JP3160626B2/en
Publication of JPH0531770A publication Critical patent/JPH0531770A/en
Application granted granted Critical
Publication of JP3160626B2 publication Critical patent/JP3160626B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Abstract

PURPOSE:To enable injection molding to be effected safely, positively by starting the injection operation an injection molding machine, and allowing the opening and closing timing of a mold gate to be synchronized with the molten resin injection timing of the injection molding machine. CONSTITUTION:By the closing operation of an operation-starting button of a controller each connected to a mold 2 and an injection molding machine 1 or the closing operation of the mold 2, the molten resin injection gate of the mold 2 is opened, and the opening action of the gate is detected by detecting means and the controller 6 receives the signals detected. Injection signals are outputted from the controller 6 by which the detected signals are received and then transmitted to the injection molding machine 1, to thereby start injection action in the injection molding machine 1. Subsequently, at the time when the injection action is completed, the controller 6 receives the gate-closing signals outputted from the injection molding machine 1, and the gate of the mold is closed by the controller 6 by which the gate closing signals are received, wherein injection permission signals are ceased.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】この発明は、射出成形システムに
関し、さらに詳しくは、金型の溶融樹脂射出用ゲ−トの
開閉タイミングを、射出成形機の溶融樹脂射出タイミン
グと同期させて、安全かつ確実な射出成形が行えるよう
にした射出成形システムに関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an injection molding system, and more specifically, it is possible to safely and safely synchronize the opening / closing timing of a molten resin injection gate of a mold with the molten resin injection timing of an injection molding machine. The present invention relates to an injection molding system that enables reliable injection molding.

【0002】[0002]

【従来の技術】一般に、バルブゲ−ト方式を採用した金
型やスピア方式を採用した金型を使用する射出成形機に
おいては、溶融樹脂射出用ゲ−トの開閉タイミングと、
射出成形機の溶融樹脂射出タイミングを、それぞれ独立
のタイマの操作によって行っており、複数のタイマで互
いに独立設定された所定時間毎の組み合わせで溶融樹脂
射出用ゲ−トを開閉し、溶融樹脂の射出を行って、射出
成形している。(文献不詳)
2. Description of the Related Art Generally, in an injection molding machine using a mold adopting a valve gate method or a mold adopting a spear method, the opening / closing timing of a molten resin injection gate,
The molten resin injection timing of the injection molding machine is controlled by operating independent timers, and the molten resin injection gates are opened and closed by a combination of a plurality of timers that are set independently of each other at predetermined time intervals. Injection is performed and injection molding is performed. (Literature unknown)

【0003】[0003]

【発明が解決しようとする課題】ところが、このように
互いに独立したタイマの操作によって溶融樹脂射出用ゲ
−トの開閉と樹脂の射出タイミングを操作する方法で
は、溶融樹脂射出用ゲ−トの開閉や、射出成形機からの
溶融樹脂の射出が互いに確認されることなく、タイマの
操作で一定時間毎に行われるため、溶融樹脂射出用ゲ−
トの開閉タイミングと射出成形機の溶融樹脂射出タイミ
ングとの間に時間的なずれが生じて、溶融樹脂射出用ゲ
−トを閉じるタイミングが遅れたりすると、溶融した樹
脂が開いたままの溶融樹脂射出用ゲ−ト先端部で冷却固
化され、引き続く射出成形が行えなくなったりする。そ
して、そのまま引き続き射出成形が行われると、溶融樹
脂射出用ゲ−トが閉じた状態で射出成形が行われること
になり、金型内に予期せぬ圧力がかかって破損に至る場
合がある。
However, in such a method of operating the opening / closing of the molten resin injection gate and the resin injection timing by operating the timers independent of each other, the opening / closing of the molten resin injection gate is performed. In addition, the injection of the molten resin from the injection molding machine is performed at regular intervals by the operation of the timer without mutual confirmation.
If there is a time lag between the opening and closing timing of the molten resin and the molten resin injection timing of the injection molding machine, and the timing for closing the molten resin injection gate is delayed, the molten resin will remain open. If the tip of the injection gate is cooled and solidified, subsequent injection molding may not be possible. If the injection molding is continued as it is, the injection molding is carried out with the molten resin injection gate closed, and unexpected pressure may be applied to the mold, resulting in damage.

【0004】[0004]

【課題を解決するための手段】この発明はかかる現状に
鑑み種々検討を行った結果なされたもので、金型と射出
成形機に接続したコントロ−ラの動作開始ボタンの作動
または金型の閉じ作動により金型の溶融樹脂射出用ゲ−
トを開き、ゲ−ト開き動作を検知手段で検知してこの検
知信号をコントロ−ラで受け、この検知信号を受けたコ
ントロ−ラから射出許可信号を出力して射出成形機に送
り、射出成形機で射出動作を開始して、射出動作が終了
した時点で、射出成形機から出力される金型のゲ−ト閉
じ信号をコントロ−ラで受け、ゲ−ト閉じ信号を受けた
コントロ−ラにより金型のゲ−トを閉じるとともに、射
出許可信号を停止させることによって、溶融樹脂射出用
ゲ−トの開閉タイミングを、射出成形機の溶融樹脂射出
タイミングと同期させ、溶融樹脂射出用ゲ−トの開閉タ
イミングとの間に時間的なずれが生じることなく、射出
成形機からの溶融樹脂の射出が行われるようにし、安全
かつ確実な射出成形が行えるようにしたものである。
The present invention has been made as a result of various studies in view of the above-mentioned present situation. The operation of the operation start button of the controller connected to the mold and the injection molding machine or the closing of the mold is performed. By operation, a mold for injecting molten resin
Open the gate, the gate opening operation is detected by the detecting means, the detection signal is received by the controller, the controller receives the detection signal and outputs an injection permission signal to the injection molding machine for injection. When the injection operation is started by the molding machine and the injection operation is completed, the controller receives the gate closing signal of the mold output from the injection molding machine, and the controller receives the gate closing signal. By closing the gate of the mold with a laser and stopping the injection permission signal, the opening and closing timing of the molten resin injection gate is synchronized with the molten resin injection timing of the injection molding machine to obtain the molten resin injection gate. The molten resin can be injected from the injection molding machine without causing a time lag between the opening and closing timing of the gate, and safe and reliable injection molding can be performed.

【0005】また、金型を開いた状態にして、金型のノ
ズル内にある古い溶融樹脂を射出して廃棄し、新しい溶
融樹脂の射出成形の準備を行うパ−ジングにおいても、
金型と射出成形機に接続したコントロ−ラの手動動作開
始ボタンの作動または射出成形機における射出開始位置
の検知により、金型の溶融樹脂射出用ゲ−トを開き、ゲ
−ト開き動作を検知手段で検知してこの検知信号をコン
トロ−ラで受け、この検知信号を受けたコントロ−ラか
ら射出許可信号を射出成形機に送り、射出成形機で射出
動作を開始して、射出動作が終了した時点で、射出成形
機から出力される金型のゲ−ト閉じ信号をコントロ−ラ
で受け、このゲ−ト閉じ信号を受けたコントロ−ラによ
り金型のゲ−トを閉じるとともに、射出許可信号を停止
させることによって、溶融樹脂射出用ゲ−トの開閉タイ
ミングを、射出成形機の溶融樹脂射出タイミングと同期
させ、溶融樹脂射出用ゲ−トの開閉タイミングとの間に
時間的なずれが生じることなく、射出成形機からの溶融
樹脂の射出が行われるようにし、安全かつ確実なパ−ジ
ングが、行えるようにしたものである。
Also in the purging in which the mold is opened, the old molten resin in the nozzle of the mold is injected and discarded, and the new molten resin is prepared for injection molding,
Open the gate for molten resin injection of the mold by operating the manual operation start button of the controller connected to the mold and the injection molding machine or detecting the injection start position in the injection molding machine, and perform the gate opening operation. The detection means detects this detection signal and the controller receives the detection signal, sends an injection permission signal from the controller that receives the detection signal to the injection molding machine, and the injection operation is started by the injection molding machine. At the time of completion, the controller receives a gate closing signal of the mold output from the injection molding machine, and the controller receiving the gate closing signal closes the mold gate, By stopping the injection permission signal, the opening / closing timing of the molten resin injection gate is synchronized with the molten resin injection timing of the injection molding machine, and the opening / closing timing of the molten resin injection gate is temporally adjusted. The gap is raw Without Rukoto, as injection of the molten resin from the injection molding machine is performed, safe and secure path - in which managing has to allow.

【0006】[0006]

【実施例】以下、この発明の射出成形機の実施例を示す
図面に基づいて説明する。図1ないし図3において、1
は射出成形機、2は射出成形機1中央部の固定盤3に取
りつけられたバルブゲ−ト方式を採用した金型であり、
それぞれ配線4および5でコントロ−ラ6に電気接続さ
れている。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of an injection molding machine of the present invention will be described below with reference to the drawings. 1 to 3, 1
Is an injection molding machine, 2 is a mold adopting a valve gate system, which is attached to a fixed platen 3 in the center of the injection molding machine 1,
It is electrically connected to the controller 6 by wires 4 and 5, respectively.

【0007】7は射出成形機1先端部の操作台8に取り
付けられた可動盤で、この可動盤7にバルブゲ−ト方式
を採用した金型2に対向する可動金型9が取り付けら
れ、射出成形時に移動してバルブゲ−ト方式を採用した
金型2と接し、これらの金型間に形成される空間に溶融
した樹脂が射出されて射出成形が行われる。
A movable plate 7 is attached to an operation console 8 at the tip of the injection molding machine 1. A movable mold 9 facing the mold 2 adopting the valve gate system is attached to the movable plate 7 for injection. Injection molding is carried out by moving during molding and contacting the mold 2 adopting the valve gate system, and injecting the molten resin into the space formed between these molds.

【0008】10は固定盤3と射出成形機1後端部の作
動ボックス11との間に固定されたシリンダで、バルブ
ゲ−ト方式を採用した金型2に連結されている。12は
図2および図3に示すようにシリンダ−10内に液密に
して回転摺動可能に内装されたスクリュであって、プラ
ンジャ13で作動ボックス11内の油圧ポンプ14に連
結され、油圧ポンプ14内の油圧の調整によって前後に
摺動される。また、プランジャ13に取り付けられた回
転ギヤ15が、作動ボックス11内の駆動モータ16に
よって連動回転する減速ギヤ17に噛合して連動回転
し、プランジャ13を介してスクリュ12がシリンダ1
0内を回転しながら摺動する。
Reference numeral 10 denotes a cylinder fixed between a stationary platen 3 and an operation box 11 at the rear end of the injection molding machine 1, which is connected to a mold 2 employing a valve gate system. As shown in FIGS. 2 and 3, reference numeral 12 denotes a screw which is liquid-tightly mounted in the cylinder 10 so as to be rotatable and slidable. The screw 12 is connected to the hydraulic pump 14 in the actuation box 11 by the plunger 13, It is slid back and forth by adjusting the hydraulic pressure in 14. Further, the rotary gear 15 attached to the plunger 13 meshes with the reduction gear 17 that is interlocked with the drive motor 16 in the actuation box 11 to interlock with each other, and the screw 12 is transferred to the cylinder 1 via the plunger 13.
It slides while rotating in 0.

【0009】18はシリンダ10に取りつけられたホッ
パで、樹脂原料は、このホッパ18からシリンダ10内
に供給され、シリンダ10内を回転摺動するスクリュ1
2で前方に送られる。そして、前方に送られる樹脂原料
はシリンダ10の外周に配設したヒータ19で加熱溶融
され、スクリュ12の先端に取り付けられたチェックバ
ルブ20を介して、バルブゲ−ト方式を採用した金型2
に供給される。
Reference numeral 18 is a hopper attached to the cylinder 10. The resin raw material is supplied from the hopper 18 into the cylinder 10, and the screw 1 is rotatably slid in the cylinder 10.
2 is sent forward. Then, the resin raw material sent forward is heated and melted by a heater 19 arranged on the outer periphery of the cylinder 10, and passes through a check valve 20 attached to the tip of the screw 12, and a mold 2 adopting a valve gate system.
Is supplied to.

【0010】21はシリンダ10の先端内部に取り付け
られた圧力センサで、この圧力センサ21でバルブゲ−
ト方式を採用した金型2に供給される溶融樹脂の圧力が
検知され、溶融樹脂の射出を終えたとき、その圧力変化
が検知されると、溶融樹脂射出直後一定時間溶融樹脂の
圧力を一定に保つ保圧開始信号が出力され、バルブゲ−
ト方式を採用した金型2のゲ−ト閉じ信号としてコント
ローラ6に送られる。
Reference numeral 21 is a pressure sensor attached to the inside of the tip of the cylinder 10.
When the pressure of the molten resin supplied to the mold 2 that adopts the gating method is detected and the change in the pressure is detected when the injection of the molten resin is finished, the pressure of the molten resin is kept constant for a certain time immediately after the injection of the molten resin A holding pressure start signal is output and the valve
It is sent to the controller 6 as a gate closing signal of the mold 2 adopting the gate system.

【0011】なお、この保圧開始信号は、成形品が薄肉
成形品の場合、溶融樹脂射出直後一定時間溶融樹脂の圧
力を一定に保つことなくそのままバルブゲ−ト方式を採
用した金型2のゲ−トを閉じる信号となり、成形品が標
準肉厚成形品の場合、ゲ−ト閉鎖用遅延タイマと連動し
て、溶融樹脂射出直後一定時間溶融樹脂の圧力を低くし
て一定に保った後、バルブゲ−ト方式を採用した金型2
のゲ−トを閉じる信号となる。また、成形品が厚肉成形
品の場合は、ゲ−ト閉鎖用遅延タイマと連動して、溶融
樹脂射出直後一定時間溶融樹脂の圧力を変えることなく
一定に保った後、バルブゲ−ト方式を採用した金型2の
ゲ−トを閉じる信号となる。
When the molded product is a thin-walled molded product, this pressure-holding start signal is used as it is for the mold 2 of the mold 2 which adopts the valve gate system without maintaining the pressure of the molten resin constant for a certain period immediately after the molten resin is injected. -Becomes a signal to close the gate, and if the molded product is a standard-thickness molded product, in conjunction with the gate closing delay timer, after the molten resin pressure has been kept constant by lowering the molten resin pressure for a certain period immediately after injection, Mold 2 adopting valve gate method
Signal to close the gate. When the molded product is a thick-walled molded product, the valve gate method is used after the molten resin pressure is kept constant for a certain period of time immediately after the molten resin is injected, in conjunction with the gate closing delay timer. It becomes a signal to close the gate of the adopted mold 2.

【0012】22はプランジャ13に固定したスイッチ
接片で、作動ボックス11内に配置された保圧開始信号
出力用リミットスイッチ23と、樹脂計量完了信号出力
用リミットスイッチ24に、スクリュ12の進退によっ
て接触する。
Numeral 22 is a switch contact piece fixed to the plunger 13, and a limit switch 23 for outputting a holding pressure signal and a limit switch 24 for outputting a resin metering completion signal which are arranged in the actuation box 11 are moved to the limit switch 23 by advancing and retracting the screw 12. Contact.

【0013】これらの保圧開始信号出力用リミットスイ
ッチ23と、樹脂計量完了信号出力用リミットスイッチ
24は、バルブゲ−ト方式を採用した金型2を開いた状
態にして、バルブゲ−ト方式を採用した金型2のノズル
内にある古い溶融樹脂を射出して廃棄し、新しい溶融樹
脂の射出成形の準備を行うパ−ジングにおいてのみ作動
されるもので、このパ−ジングにおいては、バルブゲ−
ト方式を採用した金型2を開いた状態にして射出成形と
同じ操作を行うため、疑似的にバルブゲ−ト方式を採用
した金型2のゲートを開くための信号と、バルブゲ−ト
方式を採用した金型2のゲートを閉じるための信号とを
出力させる必要があり、樹脂計量完了信号出力用リミッ
トスイッチ24とプランジャ13に固定したスイッチ接
片22との接触でバルブゲ−ト方式を採用した金型2の
ゲートを開くための疑似信号を出力させ、保圧開始信号
出力用リミットスイッチ23とプランジャ13に固定し
たスイッチ接片22との接触でバルブゲ−ト方式を採用
した金型2のゲートを閉じるための疑似信号を出力させ
ている。
The pressure-holding start signal output limit switch 23 and the resin metering completion signal output limit switch 24 adopt the valve gate method with the mold 2 adopting the valve gate method opened. The old molten resin in the nozzle of the mold 2 is injected and discarded, and it is operated only in the purging to prepare for injection molding of the new molten resin. In this purging, the valve gauge is used.
Since the same operation as the injection molding is performed with the mold 2 adopting the gate method open, the signal for opening the gate of the mold 2 adopting the pseudo valve gate method and the valve gate method are set. It is necessary to output a signal for closing the gate of the adopted mold 2, and the valve gate method is adopted by contact between the limit switch 24 for outputting the resin measurement completion signal and the switch contact piece 22 fixed to the plunger 13. The gate of the mold 2 which adopts the valve gate method by outputting a pseudo signal for opening the gate of the mold 2 and contacting the pressure-holding start signal output limit switch 23 and the switch contact piece 22 fixed to the plunger 13. A pseudo signal for closing is output.

【0014】図4は、このような射出成形機1で使用す
るバルブゲ−ト方式を採用した金型2を拡大断面図で示
したものであり、この金型2は型板25と、マニホ−ル
ド26を内設した受板27と、取付板28とから構成さ
れている。29はこの金型2に内装されたバルブピン
で、取付板28に内設されたシリンダ30で進退自在に
支持され、シリンダ30に連通する空気流通孔31,3
1から給排気することによって進退される。
FIG. 4 is an enlarged sectional view showing a mold 2 adopting the valve gate method used in the injection molding machine 1. The mold 2 has a mold plate 25 and a manifold. It is composed of a receiving plate 27 in which the socket 26 is provided and a mounting plate 28. Reference numeral 29 is a valve pin installed in the mold 2, and is supported by a cylinder 30 provided inside the mounting plate 28 so as to be able to move forward and backward, and air circulation holes 31, 3 communicating with the cylinder 30.
It is advanced and withdrawn by supplying and exhausting from 1.

【0015】32は取付板28に取りつけられた検知セ
ンサで、バルブピン29の後端頭部29aの進退をこの
検知センサ32で検知し、この検知センサ32に接続さ
れた配線5を介してコントロ−ラ6に伝達される。33
はマニホ−ルド26内に穿設された溶融樹脂流通路で、
この溶融樹脂流通路33を通って溶融された樹脂がノズ
ル34内に供給される。35はマニホ−ルド26内に内
設されたシ−ズヒ−タである。
Reference numeral 32 denotes a detection sensor attached to the mounting plate 28. The detection sensor 32 detects the forward / backward movement of the rear end head portion 29a of the valve pin 29, and the controller 5 is connected via the wiring 5 connected to the detection sensor 32. It is transmitted to LA 6. 33
Is a molten resin flow passage formed in the manifold 26,
The resin melted through the molten resin flow passage 33 is supplied into the nozzle 34. Reference numeral 35 is a sheathed heater installed inside the manifold 26.

【0016】36はノズル34内に内設されたヒ−タ
で、ノズル34内に供給された樹脂は、このヒ−タ36
でさらに加熱される。そして、ノズル34のゲ−ト37
に臨むようにバルブピン29の先端29bが配設され、
バルブピン29の進退によりゲ−ト37の開閉が行われ
る。38は熱電対である。また、39は型板25とノズ
ル34間に配設された冷却水流通管で、この冷却水流通
管39内を流通する冷却水によって、ノズル34と型板
25の冷却が行われる。
Reference numeral 36 is a heater provided inside the nozzle 34, and the resin supplied into the nozzle 34 is the same as the heater 36.
Is heated further. And the gate 37 of the nozzle 34
The tip 29b of the valve pin 29 is disposed so as to face
The gate 37 is opened and closed by advancing and retracting the valve pin 29. 38 is a thermocouple. Further, 39 is a cooling water flow pipe arranged between the mold plate 25 and the nozzle 34, and the nozzle 34 and the mold plate 25 are cooled by the cooling water flowing in the cooling water flow pipe 39.

【0017】[0017]

【作用】このようなバルブゲ−ト方式を採用した金型2
を使用した射出成形機1は、以上のようにして構成さ
れ、射出成形に際しては、まず、バルブゲ−ト方式を採
用した金型2を開いた状態にして、手動動作でノズル3
4先端部にある古い溶融樹脂を排出して廃棄し、また、
射出成形作業の点検を兼ねて新しい溶融樹脂の射出成形
の準備をするため、数回にわたって溶融樹脂を射出する
パ−ジングが行われる。
[Operation] Mold 2 adopting such a valve gate system
The injection molding machine 1 using the above is configured as described above. At the time of injection molding, first, the mold 2 adopting the valve gate system is opened and the nozzle 3 is manually operated.
4 Discharge the old molten resin at the tip and discard it.
In order to prepare for the injection molding of a new molten resin while also checking the injection molding operation, the purging of the molten resin is performed several times.

【0018】図5はこの手動動作によるパ−ジングをタ
イムチャ−トで図示したもので、まず、コントロ−ラ6
側の手動動作開始ボタンを押すと起動される。そして、
コントロ−ラ6の指令がバルブゲ−ト方式を採用した金
型2のバルブピン29に伝達され、バルブピン29が後
退してゲ−ト37が開かれる。
FIG. 5 is a time chart showing the purging by the manual operation. First, the controller 6
It is activated by pressing the manual operation start button on the side. And
The command from the controller 6 is transmitted to the valve pin 29 of the mold 2 adopting the valve gate method, and the valve pin 29 is retracted to open the gate 37.

【0019】ゲ−ト37が開かれると、検知センサ32
でバルブピン29の頭部29aの後退が検知され、ゲ−
ト37の開放が確認されて、この検知信号がコントロ−
ラ6に送られる。そして、この検知信号を受けたコント
ロ−ラ6から射出許可信号が出力され、この射出許可信
号によって、射出成形機1のシリンダ10内のスクリュ
12が前方に回転摺動され、シリンダ10内に供給され
て溶融された溶融樹脂が、バルブゲ−ト方式を採用した
金型2内に供給されると同時に、バルブゲ−ト方式を採
用した金型2のゲート37から射出される。
When the gate 37 is opened, the detection sensor 32
The backward movement of the head portion 29a of the valve pin 29 is detected by the
The opening of the door 37 is confirmed, and this detection signal is transmitted.
It is sent to LA 6. An injection permission signal is output from the controller 6 which receives the detection signal, and the screw 12 in the cylinder 10 of the injection molding machine 1 is rotationally slid forward by the injection permission signal and is supplied into the cylinder 10. The molten resin thus melted is supplied into the mold 2 adopting the valve gate system, and at the same time, is injected from the gate 37 of the mold 2 adopting the valve gate system.

【0020】そして、図2に示すようにプランジャ13
に固定したスイッチ接片22が、保圧開始信号出力用リ
ミットスイッチ23と接すると、溶融樹脂の射出を終え
たときと同様に、溶融樹脂射出直後一定時間溶融樹脂の
圧力を一定に保つ保圧開始信号が擬似信号として出力さ
れ、この保圧開始信号は、直ちにコントロ−ラ6に伝達
されて、ゲ−ト37を一定時間後に閉鎖するゲ−ト閉鎖
用遅延タイマを作動し、一定時間後にバルブピン29が
前進してゲ−ト37が閉じられる。
Then, as shown in FIG.
When the switch contact piece 22 fixed to the contact with the pressure-holding start signal output limit switch 23, the holding pressure for maintaining the pressure of the molten resin constant for a certain period immediately after the injection of the molten resin, as when the injection of the molten resin is finished. A start signal is output as a pseudo signal, and this pressure-holding start signal is immediately transmitted to the controller 6 to activate a gate closing delay timer for closing the gate 37 after a fixed time, and after a fixed time. The valve pin 29 advances and the gate 37 is closed.

【0021】ゲ−ト37が閉じられると、今度はシリン
ダ10内のスクリュ12が後方に回転摺動され、ホッパ
18からシリンダ10内に樹脂原料が供給される。そし
て、樹脂原料の供給を終え、図3に示すようにプランジ
ャ13に固定したスイッチ接片22が、樹脂計量完了信
号出力用リミットスイッチ24に接すると、バルブゲ−
ト方式を採用した金型2のゲートを開くための疑似信号
が、樹脂計量完了信号として出力され、最初の状態に戻
って、ゲ−ト37が開かれる。
When the gate 37 is closed, the screw 12 in the cylinder 10 is rotated and slid rearward this time, and the resin material is supplied from the hopper 18 into the cylinder 10. Then, when the supply of the resin raw material is completed and the switch contact piece 22 fixed to the plunger 13 comes into contact with the resin measurement completion signal output limit switch 24 as shown in FIG.
A pseudo signal for opening the gate of the mold 2 that employs the gating method is output as a resin metering completion signal, returns to the initial state, and the gate 37 is opened.

【0022】以後、この作業工程がバルブゲ−ト方式を
採用した金型2を開いた状態にして、数回繰り返し行わ
れ、ノズル34の先端部にある古い溶融樹脂が排出され
て廃棄される。そして、射出成形作業の点検を兼ねて新
しい溶融樹脂の射出成形の準備が完了する。
Thereafter, this working step is repeated several times with the mold 2 adopting the valve gate system opened, and the old molten resin at the tip of the nozzle 34 is discharged and discarded. Then, the preparation for the injection molding of the new molten resin is completed while also checking the injection molding work.

【0023】以上のようにして新しい溶融樹脂の射出成
形の準備が完了すると、自動動作に切り換えられ、コン
トロ−ラ6の作動開始ボタンを押して、射出成形機1の
全自動動作信号が入力され、射出成形が連続して行われ
る。
When the preparation for injection molding of a new molten resin is completed as described above, the operation is switched to automatic operation, the operation start button of the controller 6 is pressed, and the fully automatic operation signal of the injection molding machine 1 is input. Injection molding is performed continuously.

【0024】図6はこの自動動作による溶融樹脂の射出
動作をタイムチャ−トで図示したもので、まず、コント
ロ−ラ6の作動開始ボタンを押すかもしくは射出成形機
1を全自動モ−ドにすると全自動動作信号が入力され、
自動運転が開始される。そして、射出成形機1は可動金
型9を閉じ、型締信号が出力される。次いで、型締信号
はコントロ−ラ6に入力され、コントロ−ラ6でバルブ
ゲ−ト方式を採用した金型2のゲ−ト37を一定時間後
に開放するゲ−ト開放用遅延タイマが起動されて、一定
時間後にバルブピン29が後退し、ゲ−ト37が開かれ
る。
FIG. 6 is a time chart showing the injection operation of the molten resin by this automatic operation. First, the operation start button of the controller 6 is pressed or the injection molding machine 1 is set to the fully automatic mode. Then the fully automatic operation signal is input,
Automatic operation is started. Then, the injection molding machine 1 closes the movable mold 9, and a mold clamping signal is output. Then, the mold clamping signal is input to the controller 6, and the controller 6 starts a gate opening delay timer that opens the gate 37 of the mold 2 adopting the valve gate method after a predetermined time. Then, after a certain period of time, the valve pin 29 is retracted and the gate 37 is opened.

【0025】ゲ−ト37が開かれると、検知センサ32
でバルブピン29の頭部29aの後退が検知されてゲ−
ト37の開放が確認され、この検知信号がコントロ−ラ
6に送られる。そして、この検知信号を受けたコントロ
−ラ6から射出許可信号が出力され、この射出許可信号
によって、射出成形機1のシリンダ10内のスクリュ1
2が前進し、シリンダ10内に供給されて溶融された溶
融樹脂が、バルブゲ−ト方式を採用した金型2内に供給
されると同時に、バルブゲ−ト方式を採用した金型2の
ゲート37から射出される。
When the gate 37 is opened, the detection sensor 32
The backward movement of the head portion 29a of the valve pin 29 is detected by the
The opening of the door 37 is confirmed, and this detection signal is sent to the controller 6. Then, the controller 6 receiving this detection signal outputs an injection permission signal, and the screw 1 in the cylinder 10 of the injection molding machine 1 is output by this injection permission signal.
2 moves forward, and the molten resin which is supplied and melted in the cylinder 10 is supplied into the mold 2 adopting the valve gate system, and at the same time, the gate 37 of the mold 2 adopting the valve gate system. Is ejected from.

【0026】この間、シリンダ10の先端内部に取り付
けられた圧力センサ21でバルブゲ−ト方式を採用した
金型2のゲート37から射出される溶融樹脂の圧力が検
知され、溶融樹脂の射出を終えたとき、その圧力変化が
検知されると、溶融樹脂射出直後一定時間溶融樹脂の圧
力を一定に保つ保圧開始信号が出力される。そして、こ
の保圧開始信号は、直ちにコントロ−ラ6に伝達され
て、ゲ−ト37を一定時間後に閉鎖するゲ−ト閉鎖用遅
延タイマが作動され、一定時間後にバルブピン29が前
進してゲ−ト37が閉じられる。
During this time, the pressure of the molten resin injected from the gate 37 of the mold 2 adopting the valve gate system is detected by the pressure sensor 21 mounted inside the tip of the cylinder 10, and the injection of the molten resin is completed. At this time, when the pressure change is detected, a pressure holding start signal for maintaining the pressure of the molten resin constant for a certain period immediately after the molten resin injection is output. Then, the pressure holding start signal is immediately transmitted to the controller 6 to activate a gate closing delay timer for closing the gate 37 after a fixed time, and after a fixed time, the valve pin 29 is advanced. The door 37 is closed.

【0027】ゲ−ト37が閉じられると、射出成形機1
に型開き信号が入力されて、可動金型9が開かれ、バル
ブゲ−ト方式を採用した金型2との間で成形された製品
が取り出される。そして、製品の取り出しが完了する
と、製品取り出し完了信号が出力されて最初の状態に戻
り、可動金型9が閉じられる。以後、この作業工程が繰
り返し行われて、射出成形が連続的に行われ、成形され
た製品が、順次取り出される。
When the gate 37 is closed, the injection molding machine 1
A mold opening signal is input to the movable mold 9, and the movable mold 9 is opened, and the product molded between the mold 2 and the mold 2 adopting the valve gate method is taken out. Then, when the product take-out is completed, a product take-out completion signal is output, the state returns to the initial state, and the movable mold 9 is closed. Thereafter, this work process is repeated, injection molding is continuously performed, and the molded products are sequentially taken out.

【0028】図7は、この発明で使用される金型の他の
例であるスピア方式を採用した金型の要部を示したもの
で、このスピア方式を採用した金型40は、スピア本体
41内にボディヒ−タ42を内設し、また、スピア本体
41の先端のゲ−ト43内にチップヒ−タ44を嵌挿し
て構成されている。そして、チップヒ−タ44への電流
検知手段45をコントロ−ラ6に取りつけている。46
は溶融樹脂流通路である。
FIG. 7 shows a main part of a mold adopting a spear method which is another example of the mold used in the present invention. The mold 40 adopting the spear method is a spear body. A body heater 42 is provided inside 41, and a tip heater 44 is inserted into a gate 43 at the tip of the spear body 41. The current detecting means 45 for the tip heater 44 is attached to the controller 6. 46
Is a molten resin flow passage.

【0029】このスピア方式を採用した金型40におい
ては、樹脂原料が溶融された状態で金型40内に供給さ
れ、ボディヒ−タ42でさらに加熱溶融される。そし
て、ゲ−ト43に至った溶融樹脂は、チップヒ−タ44
を加熱しないと外気で冷却固化され、ゲ−ト43が自動
的に閉じられる。また、チップヒ−タ44を加熱すると
ゲ−ト43に至った樹脂原料が溶融されてゲ−ト43が
開いた状態になり、溶融樹脂がゲ−ト43から射出され
る。
In the mold 40 adopting the spear method, the resin raw material is supplied into the mold 40 in a molten state, and is further heated and melted by the body heater 42. Then, the molten resin reaching the gate 43 is fed to the tip heater 44.
If not heated, it is cooled and solidified by the outside air, and the gate 43 is automatically closed. Further, when the chip heater 44 is heated, the resin raw material reaching the gate 43 is melted, the gate 43 is opened, and the molten resin is injected from the gate 43.

【0030】このようなチップヒ−タ44の加熱は、チ
ップヒ−タ44に電流を流すことによって行われ、チッ
プヒ−タ44に電流が流れると、ゲ−ト43が開かれた
状態になって溶融樹脂の射出が行われ、チップヒ−タ4
4への電流の流れを停止すると、ゲ−ト43に至った溶
融樹脂が外気で冷却固化され、ゲ−ト43が自動的に閉
じられる。
Such heating of the tip heater 44 is performed by passing an electric current through the tip heater 44. When the electric current flows through the tip heater 44, the gate 43 is opened and melted. The resin is injected and the tip heater 4
When the flow of the electric current to the gate 4 is stopped, the molten resin reaching the gate 43 is cooled and solidified by the outside air, and the gate 43 is automatically closed.

【0031】しかして、このようなスピア方式を採用し
た金型40を使用して射出成形が行われる場合は、コン
トロ−ラ6に取りつけた電流検知手段45でチップヒ−
タ44への電流の流れを検知することによって、ゲ−ト
43の開放が確認され、この検知信号がコントロ−ラ6
に送られる。そして、以後の制御は前記のバルブゲ−ト
方式を採用した金型を使用した場合と全く同様にして行
われ、同じ作用効果が発揮される。
However, when injection molding is performed using the mold 40 adopting such a spear system, the tip heater is attached by the current detecting means 45 attached to the controller 6.
The opening of the gate 43 is confirmed by detecting the current flow to the controller 44, and this detection signal is sent to the controller 6
Sent to. Then, the subsequent control is performed in exactly the same way as in the case of using the mold adopting the valve gate system, and the same effect is exhibited.

【0032】なお、前記実施例において、溶融樹脂の密
度を充分にするため溶融樹脂射出直後一定時間溶融樹脂
の圧力を一定に保つ保圧開始信号の出力を、シリンダ1
0の先端内部に取り付けられた圧力センサ21で、バル
ブゲ−ト方式を採用した金型2のゲート37から射出さ
れる溶融樹脂の圧力を検知して行っているが、この方法
に限定されるものではなく、シリンダ10内を回転摺動
するスクリュ12の摺動距離または回転数などを、適宜
手段で検知して行ってもよい。また、パルブピン29の
駆動手段は、空圧に限らず、油圧、カム等の手段を用い
てもよい。
In the above embodiment, in order to make the density of the molten resin sufficient, the pressure holding start signal for maintaining the pressure of the molten resin constant for a certain period immediately after the injection of the molten resin is output as the cylinder 1
The pressure sensor 21 mounted inside the tip of 0 detects the pressure of the molten resin injected from the gate 37 of the mold 2 adopting the valve gate method, but the method is not limited to this method. Instead, the sliding distance or the rotation speed of the screw 12 that rotates and slides in the cylinder 10 may be detected by an appropriate means. Further, the driving means of the valve pin 29 is not limited to pneumatic pressure, and hydraulic means, cam or the like may be used.

【0033】[0033]

【発明の効果】以上説明したように、この発明にあって
は、金型と射出成形機に接続したコントロ−ラの動作開
始ボタンの作動または金型の閉じ作動により金型の溶融
樹脂射出用ゲ−トを開き、ゲ−ト開き動作を検知手段で
検知してこの検知信号をコントロ−ラで受け、この検知
信号を受けたコントロ−ラから射出許可信号を出力して
射出成形機に送り、射出成形機で射出動作を開始して、
射出動作が終了した時点で、射出成形機から出力される
金型のゲ−ト閉じ信号をコントロ−ラで受け、ゲ−ト閉
じ信号を受けたコントロ−ラにより金型のゲ−トを閉じ
るとともに、射出許可信号を停止させることによって、
溶融樹脂射出用ゲ−トの開閉タイミングを、射出成形機
の溶融樹脂射出タイミングと同期させているため、溶融
樹脂射出用ゲ−トの開閉タイミングとの間に時間的なず
れが生じることなく、射出成形機からの溶融樹脂の射出
が行われ、安全かつ確実な射出成形が行える。
As described above, according to the present invention, the molten resin of the mold is injected by operating the operation start button of the controller connected to the mold and the injection molding machine or closing the mold. The gate is opened, the gate opening operation is detected by the detection means, the detection signal is received by the controller, the controller receives the detection signal, outputs an injection permission signal, and sends it to the injection molding machine. , Start the injection operation with the injection molding machine,
Upon completion of the injection operation, the controller receives a mold closing signal output from the injection molding machine, and the controller receives the gate closing signal to close the mold gate. At the same time, by stopping the injection permission signal,
Since the opening and closing timing of the molten resin injection gate is synchronized with the molten resin injection timing of the injection molding machine, there is no time lag between the opening and closing timing of the molten resin injection gate, The molten resin is injected from the injection molding machine, and safe and reliable injection molding can be performed.

【0034】また、金型を開いた状態にして、手動動作
で金型のノズル内にある古い溶融樹脂を射出して廃棄
し、新しい溶融樹脂の射出成形の準備を行うパ−ジング
においても、金型と射出成形機に接続したコントロ−ラ
の手動動作開始ボタンの作動または射出成形機における
射出開始位置の検知により、金型の溶融樹脂射出用ゲ−
トを開き、ゲ−ト開き動作を検知手段で検知してこの検
知信号をコントロ−ラで受け、この検知信号を受けたコ
ントロ−ラから射出許可信号を射出成形機に送り、射出
成形機で射出動作を開始して、射出動作が終了した時点
で、射出成形機から出力される金型のゲ−ト閉じ信号を
コントロ−ラで受け、このゲ−ト閉じ信号を受けたコン
トロ−ラにより金型のゲ−トを閉じるとともに、射出許
可信号を停止させることによって、溶融樹脂射出用ゲ−
トの開閉タイミングを、射出成形機の溶融樹脂射出タイ
ミングと同期させているため、溶融樹脂射出用ゲ−トの
開閉タイミングとの間に時間的なずれが生じることな
く、射出成形機からの溶融樹脂の射出が行われるように
し、安全かつ確実なパ−ジングが行える。
Also, in the purging in which the mold is opened, the old molten resin in the nozzle of the mold is manually operated to be discarded and the new molten resin is prepared for injection molding, By operating the manual operation start button of the controller connected to the mold and the injection molding machine or detecting the injection start position in the injection molding machine, the molten resin injection gate of the mold is detected.
Open the gate, the gate opening operation is detected by the detecting means, this detection signal is received by the controller, and the injection permission signal is sent from the controller receiving this detection signal to the injection molding machine, and the injection molding machine When the injection operation is started and the injection operation is completed, the controller receives a mold closing signal output from the injection molding machine, and the controller receives the gate closing signal. By closing the mold gate and stopping the injection permission signal, the molten resin injection gate
Since the opening / closing timing of the gate is synchronized with the molten resin injection timing of the injection molding machine, there is no time lag between the opening / closing timing of the molten resin injection gate and the melting from the injection molding machine. Safe and reliable purging can be performed by injecting resin.

【0035】[0035]

【図面の簡単な説明】[Brief description of drawings]

【図1】この発明の射出成形機の一実施例を示す斜視図
である。
FIG. 1 is a perspective view showing an embodiment of an injection molding machine of the present invention.

【図2】この発明の射出成形機の要部拡大断面図であ
る。
FIG. 2 is an enlarged sectional view of a main part of the injection molding machine of the present invention.

【図3】この発明の射出成形機の要部拡大断面図であ
る。
FIG. 3 is an enlarged sectional view of an essential part of the injection molding machine of the present invention.

【図4】この発明の射出成形機で使用したバルブゲ−ト
方式を採用した金型の要部拡大断面斜視図である。
FIG. 4 is an enlarged sectional perspective view of a main part of a mold adopting the valve gate method used in the injection molding machine of the present invention.

【図5】この発明のバルブゲ−ト方式を採用した金型を
用いた射出成形機のパ−ジングの際の溶融樹脂の射出動
作を示すタイムチャ−ト図である。
FIG. 5 is a time chart showing an injection operation of molten resin at the time of purging of an injection molding machine using a mold adopting the valve gate system of the present invention.

【図6】この発明のバルブゲ−ト方式を採用した金型を
用いた射出成形機の全自動動作による溶融樹脂の射出動
作を示すタイムチャ−ト図である。
FIG. 6 is a time chart showing the injection operation of the molten resin by the fully automatic operation of the injection molding machine using the mold adopting the valve gate system of the present invention.

【図7】この発明の射出成形機で使用したスピア方式を
採用した金型の要部拡大断面図である。
FIG. 7 is an enlarged cross-sectional view of a main part of a mold adopting the spear method used in the injection molding machine of the present invention.

【符号の説明】[Explanation of symbols]

1 射出成形機 2 バルブゲ−ト方式を採用した金型 4 配線 5 配線 6 コントロ−ラ 9 可動金型 29 バルブピン 29a バルブピン頭部 29b バルブピン先端 32 検知センサ 34 ノズル 37 ゲ−ト 40 スピア方式を採用した金型 43 ゲ−ト 44 チップヒ−タ 45 電流検知手段 1 injection molding machine Mold using 2 valve gate method 4 wiring 5 wiring 6 controller 9 movable mold 29 valve pins 29a Valve pin head 29b Valve pin tip 32 detection sensor 34 nozzles 37 Gate Mold using 40 spear method 43 Gate 44 chip heater 45 Current detection means

─────────────────────────────────────────────────────
─────────────────────────────────────────────────── ───

【手続補正書】[Procedure amendment]

【提出日】平成3年9月9日[Submission date] September 9, 1991

【手続補正1】[Procedure Amendment 1]

【補正対象書類名】図面[Document name to be corrected] Drawing

【補正対象項目名】全図[Correction target item name] All drawings

【補正方法】追加[Correction method] Added

【補正内容】[Correction content]

【図2】 [Fig. 2]

【図1】 [Figure 1]

【図3】 [Figure 3]

【図4】 [Figure 4]

【図6】 [Figure 6]

【図5】 [Figure 5]

【図7】 [Figure 7]

Claims (11)

【特許請求の範囲】[Claims] 【請求項1】 金型と射出成形機に接続したコントロ−
ラの動作開始ボタンの作動または金型の閉じ作動により
金型の溶融樹脂射出用ゲ−トを開き、ゲ−ト開き動作を
検知手段で検知してこの検知信号をコントロ−ラで受
け、この検知信号を受けたコントロ−ラから射出許可信
号を出力して射出成形機に送り、射出成形機の射出動作
を開始して、金型のゲ−トの開閉タイミングを射出成形
機の溶融樹脂射出タイミングと同期させる射出成形シス
テム
1. A controller connected to a mold and an injection molding machine.
The opening button for the molten resin of the mold is opened by the operation of the operation start button or the closing operation of the mold, the gate opening operation is detected by the detecting means, and the detection signal is received by the controller. The controller receives the detection signal, outputs an injection permission signal and sends it to the injection molding machine, starts the injection operation of the injection molding machine, and opens and closes the gate of the mold to inject the molten resin of the injection molding machine. Injection molding system synchronized with timing
【請求項2】 金型と射出成形機に接続したコントロ−
ラの動作開始ボタンの作動または金型の閉じ作動により
金型の溶融樹脂射出用ゲ−トを開き、ゲ−ト開き動作を
検知手段で検知してこの検知信号をコントロ−ラで受
け、この検知信号を受けたコントロ−ラから射出許可信
号を出力して射出成形機に送り、射出成形機で射出動作
を開始して、射出動作が終了した時点で、射出成形機か
ら出力される金型のゲ−ト閉じ信号をコントロ−ラで受
け、ゲ−ト閉じ信号を受けたコントロ−ラにより金型の
ゲ−トを閉じるとともに、射出許可信号を停止する射出
成形システム
2. A controller connected to a mold and an injection molding machine.
The opening button for the molten resin of the mold is opened by the operation of the operation start button or the closing operation of the mold, the gate opening operation is detected by the detecting means, and the detection signal is received by the controller. The mold that outputs the injection permission signal from the controller that receives the detection signal and sends it to the injection molding machine, starts the injection operation with the injection molding machine, and outputs from the injection molding machine when the injection operation ends , A gate closing signal is received by the controller, and the gate of the mold is closed by the controller receiving the gate closing signal, and the injection permission signal is stopped.
【請求項3】 金型がバルブゲート方式を採用した金型
で、溶融樹脂射出用ゲ−トのゲ−ト開き動作の検知を、
バルブゲ−トに取りつけた検知センサでバルブピンの進
退動作を検知して行い、検知センサから出力されるゲ−
ト開き動作の検知信号をコントロ−ラで受ける請求項1
および2記載の射出成形システム
3. A mold adopting a valve gate system, wherein the gate opening operation of the molten resin injection gate is detected.
The detection sensor attached to the valve gate detects the forward / backward movement of the valve pin, and the output from the detection sensor
A controller receives a detection signal of a door opening operation.
And the injection molding system described in 2.
【請求項4】 金型がスピア方式を採用した金型で、溶
融樹脂射出用ゲ−トのゲ−ト開き動作の検知を、スピア
のチップヒ−タに取りつけた電流検知手段で当該チップ
ヒ−タに流れる電流を検知して行い、電流検知手段から
出力されるゲ−ト開き動作の検知信号をコントロ−ラで
受ける請求項1および2記載の射出成形システム
4. A die adopting a spear method, wherein the tip heater of the molten resin injection gate is detected by a current detecting means attached to the tip heater of the spear. 3. The injection molding system according to claim 1, wherein the injection molding system detects a current flowing through the gate and receives a detection signal of the gate opening operation output from the current detecting means by the controller.
【請求項5】 金型のゲ−ト閉じ信号の出力を、射出成
形機に取りつけた保圧開始信号出力手段からの保圧開始
信号を基準に行う請求項2記載の射出成形システム
5. The injection molding system according to claim 2, wherein the gate closing signal of the mold is output on the basis of the pressure holding start signal from the pressure holding start signal output means attached to the injection molding machine.
【請求項6】 金型を開いた状態にして、金型のノズル
内にある古い溶融樹脂を射出して廃棄し、新しい溶融樹
脂の射出成形の準備を行うパ−ジングにおいて、金型と
射出成形機に接続したコントロ−ラの手動動作開始ボタ
ンの作動または射出成形機における射出開始位置の検知
により、金型の溶融樹脂射出用ゲ−トを開き、ゲ−ト開
き動作を検知手段で検知してこの検知信号をコントロ−
ラで受け、この検知信号を受けたコントロ−ラから射出
許可信号を出力して射出成形機に送り、射出成形機の射
出動作を開始して、金型のゲ−トの開閉タイミングを射
出成形機の溶融樹脂射出タイミングと同期させる射出成
形システム
6. The mold and the injection are performed in the purging in which the mold is opened, the old molten resin in the nozzle of the mold is injected and discarded, and the new molten resin is prepared for injection molding. By detecting the injection start position of the injection molding machine or the manual operation start button of the controller connected to the molding machine, the molten resin injection gate of the mold is opened and the gate opening operation is detected by the detection means. Then, this detection signal is controlled.
The controller receives the detection signal, outputs an injection permission signal from the controller, sends it to the injection molding machine, starts the injection operation of the injection molding machine, and injection-molds the opening / closing timing of the mold gate. Injection molding system that synchronizes with the molten resin injection timing of the machine
【請求項7】 金型を開いた状態にして、金型のノズル
内にある古い溶融樹脂を射出して廃棄し、新しい溶融樹
脂の射出成形の準備を行うパ−ジングにおいて、金型と
射出成形機に接続したコントロ−ラの手動動作開始ボタ
ンの作動または射出成形機における射出開始位置の検知
により、金型の溶融樹脂射出用ゲ−トを開き、ゲ−ト開
き動作を検知手段で検知してこの検知信号をコントロ−
ラで受け、この検知信号を受けたコントロ−ラから射出
許可信号を射出成形機に送り、射出成形機で射出動作を
開始して、射出動作が終了した時点で、射出成形機から
出力される金型のゲ−ト閉じ信号をコントロ−ラで受
け、このゲ−ト閉じ信号を受けたコントロ−ラにより金
型のゲ−トを閉じるとともに、射出許可信号を停止する
射出成形システム
7. The mold and the injection are performed in the purging in which the mold is opened, the old molten resin in the nozzle of the mold is injected and discarded, and the new molten resin is prepared for injection molding. By detecting the injection start position of the injection molding machine or the manual operation start button of the controller connected to the molding machine, the molten resin injection gate of the mold is opened and the gate opening operation is detected by the detection means. Then, this detection signal is controlled.
The controller receives the detection signal, sends an injection permission signal from the controller to the injection molding machine, starts the injection operation by the injection molding machine, and outputs it from the injection molding machine when the injection operation ends. An injection molding system in which a controller receives a gate closing signal of a mold, and the controller which receives the gate closing signal closes the gate of the mold and stops an injection permission signal.
【請求項8】 射出成形機における射出開始位置を、射
出成形機に取りつけた樹脂計量完了信号出力手段で検知
する請求項6および7記載の射出成形システム
8. The injection molding system according to claim 6, wherein the injection start position in the injection molding machine is detected by a resin measurement completion signal output means attached to the injection molding machine.
【請求項9】 金型がバルブゲート方式を採用した金型
で、溶融樹脂射出用ゲ−トのゲ−ト開き動作の検知を、
バルブゲ−トに取りつけた検知センサでバルブピンの進
退動作を検知して行い、検知センサから出力されるゲ−
ト開き動作の検知信号をコントロ−ラで受ける請求項6
および7記載の射出成形システム
9. The mold is a mold adopting a valve gate system, wherein detection of a gate opening operation of a molten resin injection gate is performed.
The detection sensor attached to the valve gate detects the forward / backward movement of the valve pin, and the output from the detection sensor
7. A controller receives a detection signal of a door opening operation.
And the injection molding system described in 7.
【請求項10】 金型がスピア方式を採用した金型で、
溶融樹脂射出用ゲ−トのゲ−ト開き動作の検知を、スピ
アのチップヒ−タに取りつけた電流検知手段で当該チッ
プヒ−タに流れる電流を検知して行い、電流検知手段か
ら出力されるゲ−ト開き動作の検知信号をコントロ−ラ
で受ける請求項6および7記載の射出成形システム
10. The mold is a mold adopting a spear method,
The gate opening operation of the molten resin injection gate is detected by detecting the current flowing through the tip heater of the spear by detecting the current flowing through the tip heater, and the gate is output from the current detecting means. An injection molding system according to claim 6 or 7, wherein the controller receives a detection signal of a door opening operation.
【請求項11】 金型のゲ−ト閉じ信号の出力を、射出
成形機に取りつけた保圧開始信号出力手段からの保圧開
始信号を基準に行う請求項7記載の射出成形システム
11. The injection molding system according to claim 7, wherein the gate closing signal of the mold is output on the basis of the pressure holding start signal from the pressure holding start signal output means attached to the injection molding machine.
JP41211890A 1990-12-18 1990-12-18 Injection molding system Expired - Fee Related JP3160626B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP41211890A JP3160626B2 (en) 1990-12-18 1990-12-18 Injection molding system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP41211890A JP3160626B2 (en) 1990-12-18 1990-12-18 Injection molding system

Publications (2)

Publication Number Publication Date
JPH0531770A true JPH0531770A (en) 1993-02-09
JP3160626B2 JP3160626B2 (en) 2001-04-25

Family

ID=18520999

Family Applications (1)

Application Number Title Priority Date Filing Date
JP41211890A Expired - Fee Related JP3160626B2 (en) 1990-12-18 1990-12-18 Injection molding system

Country Status (1)

Country Link
JP (1) JP3160626B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002244742A (en) * 2001-02-14 2002-08-30 Toto Ltd Pressure reducing valve
JP2019177684A (en) * 2018-03-30 2019-10-17 住友重機械工業株式会社 Injection molding machine
JP2020001215A (en) * 2018-06-26 2020-01-09 宇部興産機械株式会社 Control device for injection molder

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002244742A (en) * 2001-02-14 2002-08-30 Toto Ltd Pressure reducing valve
JP4666434B2 (en) * 2001-02-14 2011-04-06 Toto株式会社 Pressure reducing valve
JP2019177684A (en) * 2018-03-30 2019-10-17 住友重機械工業株式会社 Injection molding machine
JP2020001215A (en) * 2018-06-26 2020-01-09 宇部興産機械株式会社 Control device for injection molder

Also Published As

Publication number Publication date
JP3160626B2 (en) 2001-04-25

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