JPH042615U - - Google Patents
Info
- Publication number
- JPH042615U JPH042615U JP4334190U JP4334190U JPH042615U JP H042615 U JPH042615 U JP H042615U JP 4334190 U JP4334190 U JP 4334190U JP 4334190 U JP4334190 U JP 4334190U JP H042615 U JPH042615 U JP H042615U
- Authority
- JP
- Japan
- Prior art keywords
- injection
- start signal
- solenoid
- output circuit
- oil path
- 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
Links
- 238000002347 injection Methods 0.000 claims description 11
- 239000007924 injection Substances 0.000 claims description 11
- 238000010438 heat treatment Methods 0.000 claims description 2
- 238000006073 displacement reaction Methods 0.000 claims 1
- 239000003814 drug Substances 0.000 claims 1
- 230000005284 excitation Effects 0.000 claims 1
- 238000001746 injection moulding Methods 0.000 claims 1
- 230000007935 neutral effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004886 process control Methods 0.000 description 1
Landscapes
- Injection Moulding Of Plastics Or The Like (AREA)
Description
第１図は本考案の１実施例を説明するための要
部ブロツクダイヤグラムである。
１……加熱筒、２……スクリユ、４……射出シ
リンダ、１０……可変吐出量ポンプ、１０Ａ……
比例電磁弁、１２……３位置４方向電磁切換弁、
１６……リリーフ弁、１７……ベント油路、１８
……電磁式圧力制御弁、２０……主制御部、２１
……シーケンス制御部、２２……プロセス制御部
、２３……出力部。
FIG. 1 is a block diagram of essential parts for explaining one embodiment of the present invention. 1...Heating tube, 2...Screw, 4...Injection cylinder, 10...Variable discharge amount pump, 10A...
Proportional solenoid valve, 12...3 position 4-way solenoid switching valve,
16... Relief valve, 17... Vent oil path, 18
... Solenoid pressure control valve, 20 ... Main control section, 21
... Sequence control section, 22 ... Process control section, 23 ... Output section.
Claims (1)
進可能とする射出シリンダを設け、該射出シリン
ダと可変吐出量ポンプを油路で接続し、該油路の
途中に中立位置で該油路を断としソレノイド励磁
時に通とする電磁切換弁を設け、該可変吐出量ポ
ンプと該電磁切換弁とを結ぶ油路の途中から分岐
して電磁式圧力制御弁を設けた射出成形機におい
て、射出開始に先立つてプレ射出開始信号を出力
するプレ射出開始信号出力回路と、該プレ射出開
始信号の出力と同時に計時を開始するタイマと、
該プレ射出開始信号により、該可変吐出量ポンプ
の吐出量および該電磁式圧力制御弁の圧力をそれ
ぞれの設定値に基づき所定の状態に制御するため
の吐出量制御信号出力回路および圧力制御信号出
力回路と、該タイマの計時終了信号により、該電
磁切換弁のソレノイドを励磁して射出を開始する
ためのソレノイド励磁出力出力回路を有すること
を特徴とする射出制御装置。 A screw is inserted into the heating cylinder, an injection cylinder is provided that allows the medicine to move forward and backward, the injection cylinder is connected to a variable displacement pump through an oil path, and the oil path is connected at a neutral position in the middle of the oil path. In an injection molding machine equipped with an electromagnetic switching valve that opens when the solenoid is energized and an electromagnetic switching valve that opens when the solenoid is energized, and an electromagnetic pressure control valve that branches off from the middle of the oil path connecting the variable discharge amount pump and the electromagnetic switching valve, injection starts. a pre-injection start signal output circuit that outputs a pre-injection start signal prior to the pre-injection start signal; a timer that starts timing at the same time as the output of the pre-injection start signal;
A discharge rate control signal output circuit and a pressure control signal output circuit for controlling the discharge rate of the variable discharge rate pump and the pressure of the electromagnetic pressure control valve to predetermined states based on respective set values by the pre-injection start signal. An injection control device comprising a solenoid excitation output circuit for energizing a solenoid of the electromagnetic switching valve to start injection based on a timing end signal of the timer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4334190U JPH0525869Y2 (en) | 1990-04-23 | 1990-04-23 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4334190U JPH0525869Y2 (en) | 1990-04-23 | 1990-04-23 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH042615U true JPH042615U (en) | 1992-01-10 |
| JPH0525869Y2 JPH0525869Y2 (en) | 1993-06-30 |
Family
ID=31555677
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4334190U Expired - Lifetime JPH0525869Y2 (en) | 1990-04-23 | 1990-04-23 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0525869Y2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52146766U (en) * | 1977-04-14 | 1977-11-07 | ||
| JPH06335947A (en) * | 1993-03-30 | 1994-12-06 | Niigata Eng Co Ltd | High-speed low-pressure molding controller for injection molding machine |
| JPH06335946A (en) * | 1993-03-30 | 1994-12-06 | Niigata Eng Co Ltd | High-speed low-pressure molding controller for injection molding machine |
-
1990
- 1990-04-23 JP JP4334190U patent/JPH0525869Y2/ja not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52146766U (en) * | 1977-04-14 | 1977-11-07 | ||
| JPH06335947A (en) * | 1993-03-30 | 1994-12-06 | Niigata Eng Co Ltd | High-speed low-pressure molding controller for injection molding machine |
| JPH06335946A (en) * | 1993-03-30 | 1994-12-06 | Niigata Eng Co Ltd | High-speed low-pressure molding controller for injection molding machine |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0525869Y2 (en) | 1993-06-30 |
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