JPS5670106A - Combination fluid circuit - Google Patents
Combination fluid circuitInfo
- Publication number
- JPS5670106A JPS5670106A JP14693379A JP14693379A JPS5670106A JP S5670106 A JPS5670106 A JP S5670106A JP 14693379 A JP14693379 A JP 14693379A JP 14693379 A JP14693379 A JP 14693379A JP S5670106 A JPS5670106 A JP S5670106A
- Authority
- JP
- Japan
- Prior art keywords
- pump
- line
- valve
- variable
- capacity pump
- 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
Landscapes
- Injection Moulding Of Plastics Or The Like (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
PURPOSE: To reduce noises and to improve a rising responsiveness to a discharge quantity of a pump, by a method wherein a small, variable capacity pump and a constant capacity pump, producing a comparatively less noise, are used, and lines for said pumps are connected together through a chack valve.
CONSTITUTION: In the case of the adoption to a fluid circuit in an injection-molder 7, a branch line 16, connected to a tank 15, is connected for branching to a pump line 3 between a variable capacity pump 1 and a variable throttle valve 4, serving as a flow regulating means. A bypass type pressure compensation valve 17, which is operated by a differential pressure at the front and the rear of the variable throttle valve 4, and a throttle 18 are situated at said branch line 16. A slanting plate control cylinder 25, serving as a discharge control unit of the variable capacity pump 1, is connected to the branch line 16 ranging between a pressure compensation valve 17 and the throttle 18. A pump line 41, of a constant capacity pump 2, equipped with a check valve 43 positioned at the middle of the pump line 41, is connected to the line 3 in front of the variable throttle valve 4, and an unload means 46 is connected to said line 41.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14693379A JPS5670106A (en) | 1979-11-12 | 1979-11-12 | Combination fluid circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14693379A JPS5670106A (en) | 1979-11-12 | 1979-11-12 | Combination fluid circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5670106A true JPS5670106A (en) | 1981-06-11 |
Family
ID=15418847
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14693379A Pending JPS5670106A (en) | 1979-11-12 | 1979-11-12 | Combination fluid circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5670106A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5762982A (en) * | 1980-10-02 | 1982-04-16 | Sumitomo Light Metal Ind Ltd | Oil hydraulic unit |
| JPS5813278A (en) * | 1981-07-13 | 1983-01-25 | Daikin Ind Ltd | Flow control circuit capable of joining fluid flows automatically |
| JPS6117704A (en) * | 1984-07-05 | 1986-01-25 | Toshiba Mach Co Ltd | Control valve for constant difference pressure flow |
| US7124577B2 (en) | 2003-12-10 | 2006-10-24 | Komatsu Ltd. | Vehicular steering control device |
| JP2013019414A (en) * | 2011-07-13 | 2013-01-31 | Linde Material Handling Gmbh | Hydrostatic drive system |
| CN106050762A (en) * | 2016-07-18 | 2016-10-26 | 江苏恒立液压科技有限公司 | Unloading hydraulic system |
-
1979
- 1979-11-12 JP JP14693379A patent/JPS5670106A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5762982A (en) * | 1980-10-02 | 1982-04-16 | Sumitomo Light Metal Ind Ltd | Oil hydraulic unit |
| JPS5813278A (en) * | 1981-07-13 | 1983-01-25 | Daikin Ind Ltd | Flow control circuit capable of joining fluid flows automatically |
| JPH0147645B2 (en) * | 1981-07-13 | 1989-10-16 | Daikin Kogyo Co Ltd | |
| JPS6117704A (en) * | 1984-07-05 | 1986-01-25 | Toshiba Mach Co Ltd | Control valve for constant difference pressure flow |
| JPH0456161B2 (en) * | 1984-07-05 | 1992-09-07 | Toshiba Machine Co Ltd | |
| US7124577B2 (en) | 2003-12-10 | 2006-10-24 | Komatsu Ltd. | Vehicular steering control device |
| JP2013019414A (en) * | 2011-07-13 | 2013-01-31 | Linde Material Handling Gmbh | Hydrostatic drive system |
| CN106050762A (en) * | 2016-07-18 | 2016-10-26 | 江苏恒立液压科技有限公司 | Unloading hydraulic system |
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