CN202943234U - Casting machine differential action hydraulic mechanism - Google Patents
Casting machine differential action hydraulic mechanism Download PDFInfo
- Publication number
- CN202943234U CN202943234U CN 201220594734 CN201220594734U CN202943234U CN 202943234 U CN202943234 U CN 202943234U CN 201220594734 CN201220594734 CN 201220594734 CN 201220594734 U CN201220594734 U CN 201220594734U CN 202943234 U CN202943234 U CN 202943234U
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- valve
- differential
- differential action
- mould assembly
- hydraulic mechanism
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Abstract
The utility model discloses a casting machine differential action hydraulic mechanism and relates to the field of machinery production and devices. A differential action control valve and a differential adjusting valve are added on a loop of an open and close type valve and connected. The differential action adjusting valve is connected with a hydraulic rear cavity oil inlet. The casting machine differential action hydraulic mechanism has the advantages of improving opening and closing speed of an open and close type oil cylinder under the condition that power of an oil pump is not changed, improving working efficiency, and saving power energy and increasing differential adjustment under the condition that system parameters are not changed, adjusting opening and closing speed of the differential action adjusting valve, bringing convenience for operation of operating staff, saving more power energy than a hydraulic mechanism without differential action, and facilitating operation.
Description
Technical field
The utility model relates to machine-building and apparatus field, relates in particular to a kind of differential hydraulic mechanism of die casting machine.
Background technology
The differential hydraulic system utilizes the hydraulic cylinder of the significant surface product moment of hydraulic system both sides, is under the condition that does not increase hydraulic pump capacity and power, realizes the effective way of rapid movement.Existing hydraulic power unit is not with difference structure, and when mould assembly oil cylinder mould assembly was worked, folding type valve was toward mould assembly oil cylinder back cavity fuel feeding, but mould assembly oil cylinder ante-chamber hydraulic oil is directly got back to inside the machine fuel tank.If change mould assembly speed speed, need to change systematic parameter, pressure and flow could change mould assembly speed.
The utility model content
For existing technical problem, the utility model provides a kind of differential hydraulic mechanism of die casting machine, has increased differential hydraulic mechanism on the basis of existing hydraulic power unit.The technical solution adopted in the utility model is: increase a differential-control valve and a differential control valve on the loop of folding type valve, and differential-control valve is connected with differential control valve; Differential control valve is connected with the oil-feed of hydraulic cylinder back cavity.
The utility model provides a kind of differential hydraulic mechanism of die casting machine, in the immovable situation of oil pump power, improves mould assembly oil cylinder folding type speed.Improve operating efficiency, saved power source.And increased differential adjusting, in the situation that do not change systematic parameter, can regulate the speed of mould assembly speed by differential control valve, facilitated operative employee's operation.Be not with differential comparing and more save power source, more convenient operation.
Description of drawings
Fig. 1 is structural representation of the present utility model;
Fig. 2 is mould assembly motion and open form motion structure schematic diagram.
The specific embodiment
Embodiment is described in further detail the present invention below in conjunction with accompanying drawing.
Fig. 1 is structural representation of the present utility model.
The valve regulation of oil pump feed passing ratio pressure flow enters folding type valve to required operating pressure and flow, increases a differential-control valve on the loop of folding type valve, and is connected with differential control valve, and differential control valve is connected with the oil-feed of hydraulic cylinder back cavity.Close when not working when differential-control valve, in the mould assembly oil cylinder, ante-chamber oil can not be got back to fuel tank, again flows into mould assembly oil cylinder back cavity by differential control valve.In system pressure and the immovable situation of flow, increased the flow of mould assembly oil cylinder back cavity, realize the differential speed accelerating motion.
Below in conjunction with Fig. 2, concrete description is done in mould assembly motion and open form motion.
1) mould assembly motion
The mould assembly motion is completed by three sequence of movement: low pressure, differential, high pressing-type.Make a concrete analysis of as follows:
A), low pressing-type: the ratio pressure flow valve switches to mould assembly pressure current value, and S2, S3, S7, S8 get electric, and the S1 dead electricity realizes low pressing-type motion.
Oil-feed 1: fuel tank → filter (2) → oil pump (1) → valve (6) → valve (7) → right position → valve of valve (4) (8) → mould assembly oil cylinder left chamber.
Oil return: the right position → valve of mould assembly right cavity of cylinder → valve (4) (5) → cooler (3) → fuel tank
B), differential mould assembly: ratio pressure flow valve (13) switches to mould assembly pressure current value, and S2, S3, S6 get electric, and S1, S8 dead electricity are hanged down pressing-type and finished, and differential mould assembly begins.Realize differential mould assembly motion
Oil-feed 1: fuel tank → filter (2) → oil pump (1) → valve (7) → right position → valve of valve (4) (8) → mould assembly oil cylinder left chamber.
Oil-feed 2: the right position → valve of mould assembly right cavity of cylinder → valve (4) (10) → valve (8) mould assembly oil cylinder left chamber
Mould assembly cylinder rod chamber hydraulic oil and oil pump feed converge realizes differential mould assembly motion.Differential velocity is regulated by valve (11).
C), high pressing-type: ratio pressure flow valve (7) switches to mould assembly pressure current value, and S2, S3, S6, S8 get electric, the S1 dead electricity, differential mould assembly finishes, high pressing-type begins.
Oil-feed: fuel tank → filter (2) → oil pump (1) → valve (7) → right position → valve of valve (4) (8) → mould assembly oil cylinder left chamber.
Oil return: the right position → valve of mould assembly right cavity of cylinder → valve (4) (5) → cooler (3) → fuel tank
2) open form motion
The open form motion is completed by three sequence of movement, and open form, constant speed open form, open form turn slow in termination soon at a slow speed, make a concrete analysis of as follows:
(1), open form motion at a slow speed: ratio pressure flow valve (13) switches the relevant pressure value, and S2, S3, S9 get electric, and S1, S6, S8 dead electricity realize open form motion at a slow speed.
Oil-feed: fuel tank → filter (2) → oil pump (1) → valve (7) → left position → mould assembly right cavity of cylinder of valve (9)
Oil return: the left position → cooler of the left chamber → valve of mould assembly oil cylinder (9) (3) → fuel tank
(2), constant speed open form motion: ratio pressure flow valve (7) switches the relevant pressure value, and S2, S3, S6, S9, S8 get electric, and the S1 dead electricity realizes the motion of constant speed open form.
Oil-feed: fuel tank → filter (2) → oil pump (1) → valve (7) → left position → mould assembly right cavity of cylinder of the left position → mould assembly right cavity of cylinder → valve of valve (4) (9);
Oil return: the left position → valve of the left chamber → valve of mould assembly oil cylinder (4) (5) → cooler (the 3) → left position → cooler of fuel tank → valve (9) (3) → fuel tank;
(3) open form turns slow in stopping soon: ratio pressure flow valve (7) switches the relevant pressure value, and S2, S3, S6, S8 get electric, and S1, S9 dead electricity realize that open form turns slow in stopping motion soon.
Oil-feed: fuel tank → filter (2) → oil pump (1) → valve (7) → left position → mould assembly right cavity of cylinder of valve (4);
Oil return: the left position → valve of the left chamber → valve of mould assembly oil cylinder (4) (5) → cooler (3) → fuel tank.
Above demonstration and described basic principle of the present utility model and principal character and advantage of the present utility model.The technical staff of the industry should understand; the utility model is not restricted to the described embodiments; that describes in above-described embodiment and specification just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (1)
1. the differential hydraulic mechanism of a die casting machine is characterized in that: described differential hydraulic mechanism increases a differential-control valve and a differential control valve on the loop of folding type valve, described differential-control valve is connected with differential control valve; Described differential control valve is connected with the oil-feed of hydraulic cylinder back cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220594734 CN202943234U (en) | 2012-11-13 | 2012-11-13 | Casting machine differential action hydraulic mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220594734 CN202943234U (en) | 2012-11-13 | 2012-11-13 | Casting machine differential action hydraulic mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202943234U true CN202943234U (en) | 2013-05-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220594734 Expired - Fee Related CN202943234U (en) | 2012-11-13 | 2012-11-13 | Casting machine differential action hydraulic mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202943234U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103736959A (en) * | 2013-12-25 | 2014-04-23 | 苏州三基铸造装备股份有限公司 | Multi-stage speed injection system |
-
2012
- 2012-11-13 CN CN 201220594734 patent/CN202943234U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103736959A (en) * | 2013-12-25 | 2014-04-23 | 苏州三基铸造装备股份有限公司 | Multi-stage speed injection system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130522 Termination date: 20141113 |
|
| EXPY | Termination of patent right or utility model |