JPH0446203U - - Google Patents
Info
- Publication number
- JPH0446203U JPH0446203U JP8803790U JP8803790U JPH0446203U JP H0446203 U JPH0446203 U JP H0446203U JP 8803790 U JP8803790 U JP 8803790U JP 8803790 U JP8803790 U JP 8803790U JP H0446203 U JPH0446203 U JP H0446203U
- Authority
- JP
- Japan
- Prior art keywords
- hydraulic
- pump
- hydraulic oil
- relief valve
- passage
- 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.)
- Pending
Links
- 239000010720 hydraulic oil Substances 0.000 claims description 4
- 238000001746 injection moulding Methods 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 3
- 239000003921 oil Substances 0.000 description 1
Landscapes
- Fluid-Pressure Circuits (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Description
第１図は本考案の一実施例に係る射出成形機の
作動油昇温装置の概略図、第２図は第１図におけ
る制御信号出力器内の配線を示す回路図、第３図
は本考案における時間と負荷圧力との関係を示す
グラフ、第４図は本考案における時間と油温との
関係を示すグラフである。
１……油圧ポンプ、２……油圧シリンダ、４…
…第１の管路、９……バイパス通路、１０……電
磁リリーフ弁、１１……制御信号出力器、１３，
１７，２１，２５……タイマ、１４，１８，２２
，２６……タイマ接点、１５，１９，２３，２５
，２９…コイル、１６，２０，２４，２８……接
点、３０，３２，３４，３６，３８……制御信号
発生器、３１，３３，３５，３７，３９……接点
。
Fig. 1 is a schematic diagram of a hydraulic oil temperature raising device for an injection molding machine according to an embodiment of the present invention, Fig. 2 is a circuit diagram showing the wiring inside the control signal output device in Fig. 1, and Fig. 3 is a diagram of the present invention. FIG. 4 is a graph showing the relationship between time and load pressure in the invention, and FIG. 4 is a graph showing the relationship between time and oil temperature in the invention. 1...Hydraulic pump, 2...Hydraulic cylinder, 4...
...first pipe line, 9...bypass passage, 10...electromagnetic relief valve, 11...control signal output device, 13,
17, 21, 25...Timer, 14, 18, 22
, 26...Timer contact, 15, 19, 23, 25
, 29... Coil, 16, 20, 24, 28... Contact, 30, 32, 34, 36, 38... Control signal generator, 31, 33, 35, 37, 39... Contact.
Claims (1)
に接続された油圧ポンプと、前記主通路に連通す
るバイパス通路に設けられ前記油圧ポンプから吐
出された作動油の圧力を調整する電磁リリーフ弁
と、前記油圧ポンプから吐出された作動油の圧力
をポンプの始動からの時間経過に応じて段階的に
増圧させる制御信号を前記電磁リリーフ弁に出力
する制御手段とを備えることを特徴とする射出成
形機の作動油昇温装置。 a hydraulic pump connected to a hydraulic drive device such as a hydraulic cylinder through a main passage; and an electromagnetic relief valve provided in a bypass passage communicating with the main passage to adjust the pressure of hydraulic oil discharged from the hydraulic pump; Injection molding characterized by comprising: a control means for outputting a control signal to the electromagnetic relief valve to increase the pressure of the hydraulic oil discharged from the hydraulic pump in stages according to the passage of time from the start of the pump. Machine's hydraulic oil temperature raising device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8803790U JPH0446203U (en) | 1990-08-23 | 1990-08-23 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8803790U JPH0446203U (en) | 1990-08-23 | 1990-08-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0446203U true JPH0446203U (en) | 1992-04-20 |
Family
ID=31820926
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8803790U Pending JPH0446203U (en) | 1990-08-23 | 1990-08-23 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0446203U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010060038A (en) * | 2008-09-03 | 2010-03-18 | Mitsubishi Heavy Ind Ltd | Speed-increasing gear lubrication device and method |
| JP2011126107A (en) * | 2009-12-17 | 2011-06-30 | Nissei Plastics Ind Co | Method for increasing temperature of hydraulic oil of molding machine |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS622801B2 (en) * | 1979-01-12 | 1987-01-21 | Shigeo Chiba | |
| JPS62220706A (en) * | 1986-03-19 | 1987-09-28 | Toyo Kikai Kinzoku Kk | Method of heating up oil temperature in hydraulic molding machine |
-
1990
- 1990-08-23 JP JP8803790U patent/JPH0446203U/ja active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS622801B2 (en) * | 1979-01-12 | 1987-01-21 | Shigeo Chiba | |
| JPS62220706A (en) * | 1986-03-19 | 1987-09-28 | Toyo Kikai Kinzoku Kk | Method of heating up oil temperature in hydraulic molding machine |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010060038A (en) * | 2008-09-03 | 2010-03-18 | Mitsubishi Heavy Ind Ltd | Speed-increasing gear lubrication device and method |
| JP2011126107A (en) * | 2009-12-17 | 2011-06-30 | Nissei Plastics Ind Co | Method for increasing temperature of hydraulic oil of molding machine |
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