CN202571278U - Hydraulic system with independent-loop pressurization of magnetic-material wet forming hydraulic machine - Google Patents
Hydraulic system with independent-loop pressurization of magnetic-material wet forming hydraulic machine Download PDFInfo
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- CN202571278U CN202571278U CN 201220151378 CN201220151378U CN202571278U CN 202571278 U CN202571278 U CN 202571278U CN 201220151378 CN201220151378 CN 201220151378 CN 201220151378 U CN201220151378 U CN 201220151378U CN 202571278 U CN202571278 U CN 202571278U
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- pressurization
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Abstract
The utility model relates to a hydraulic system with independent-loop pressurization of a magnetic-material wet forming hydraulic machine, comprising a pressurizing oil cylinder, a large oil pump and a main oil path. The hydraulic system is characterized by also comprising a pressurizing oil path connected with the main oil path in parallel, wherein the liquid of the pressurizing oil path is supplied by a small oil pump; and the pressurizing oil path is connected with a mold for multi-stage speed regulation and pressure maintenance in series. The hydraulic system has the advantages that oil supplying and pressurization are carried out on the pressurizing oil cylinder by another independent pressurizing oil path, so that the influence of more valves and a complex channel of the main oil path to the pressurizing stability is avoided, and the speed and the pressurizing accuracy are increased.
Description
Technical field
The utility model relates to a kind of hydraulic system, particularly a kind of magnetic material wet type forming hydraulic press independent loop pressurized hydraulic system.
Background technology
Magnetic material wet type forming hydraulic press is widely used in the production of annular, watt type, square and various special-shaped wet pressing permanent-magnet ferrite magnetic products.The working connection of its traditional pressurization oil circuit and the control of other function is the road altogether, and the oil that the little oil pump of confession pressurization is got moves to the pressurization oil cylinder from working connection, and because the working connection valve member is numerous; Passage is complicated; The point of seepage is many, thus pressurization stability, and velocity accuracy is poor; If sometimes even do not add power, have a strong impact on the qualification rate of goods after the wearing and tearing of little pumped.
Summary of the invention
The technical problem that the utility model will solve provides a kind of magnetic material wet type forming hydraulic press independent loop pressurized hydraulic system effective, that stability is high of pressurizeing.
For solving the problems of the technologies described above; The technical scheme of the utility model is: a kind of magnetic material wet type forming hydraulic press independent loop pressurized hydraulic system; Comprise pressurization oil cylinder, big oil pump and working connection, through the working connection feed flow, its innovative point is said pressurization oil cylinder by big oil pump: also comprise a pressurization oil circuit parallelly connected with working connection; The little oil pump feed flow of said compressed oil route is serially connected with the module that is used for fuel supply flow rate is carried out multistep speed regulation and pressurize on the said pressurization oil circuit.
Further, said multistep speed regulation module is regulated oil circuit, is at a high speed regulated oil circuit, middling speed and regulate oil circuit and dead slow speed and regulate the oil circuit parallel connection and be provided with and form by ultrahigh speed; Said ultrahigh speed is regulated oil circuit, high speed is regulated on oil circuit, middling speed adjusting oil circuit and the dead slow speed adjusting oil circuit and is serially connected with the pressurize check valve respectively.
Further, said ultrahigh speed adjusting oil circuit is solenoid directional control valve A.
Further, said high speed adjusting oil circuit is a solenoid directional control valve B serial connection high speed flow speed control valve.
Further, said middling speed adjusting oil circuit is a solenoid directional control valve C serial connection middling speed flow speed control valve.
Further, said dead slow speed adjusting oil circuit is the dead slow speed flow speed control valve.
Further, all be parallel with electromagnetic relief valve on said working connection and the pressurization oil circuit.
Further, be in series with accurate filter on the pressurization oil circuit between said multistep speed regulation module and the little oil pump.
The advantage of the utility model is: through another oil circuit that independently pressurizes the pressurization oil cylinder is carried out the fuel feeding pressurization, avoid, passage complex effects pressurization stability numerous because of the working connection valve member, raising speed and pressurize precision.
Description of drawings
Fig. 1 is the utility model magnetic material wet type forming hydraulic press independent loop pressurized hydraulic system hydraulic schematic diagram.
The specific embodiment
As shown in Figure 1; Comprise pressurization oil cylinder 16, little oil pump 2, big oil pump 3, solenoid directional control valve A7, solenoid directional control valve B8, high speed flow speed control valve 9, middling speed flow speed control valve 10, dead slow speed flow speed control valve 11, pressurize check valve 12, pressurize check valve 13, pressurize check valve 14, pressurize check valve 15.
Above-mentioned pressurization oil cylinder 16 passes through working connection a feed flow by big oil pump 3.
Also comprise another pressurization oil circuit b, b is parallelly connected with working connection a for this pressurization oil circuit, and pressurization oil circuit b is serially connected with the module c that is used for the feed flow flow is carried out multistep speed regulation by little oil pump 2 feed flows on the pressurization oil circuit b.Little oil pump 2 and big oil pump 3 are by motor 1 driven in synchronism.
Multistep speed regulation module c is regulated oil circuit, is at a high speed regulated oil circuit, middling speed and regulate oil circuit and dead slow speed and regulate the oil circuit parallel connection and be provided with and form by ultrahigh speed.In the present embodiment, it is solenoid directional control valve A7 that ultrahigh speed is regulated oil circuit; Regulate oil circuit at a high speed and be solenoid directional control valve B8 serial connection high speed flow speed control valve 9; Middling speed is regulated oil circuit and is solenoid directional control valve C6 serial connection middling speed flow speed control valve 10; It is dead slow speed flow speed control valve 11 that dead slow speed is regulated oil circuit.
The ultrahigh speed of multistep speed regulation module c is regulated oil circuit, high speed is regulated on oil circuit, middling speed adjusting oil circuit and the dead slow speed adjusting oil circuit and is in series with pressurize check valve 12,13,14,15 respectively.To realize to pressurization oil cylinder pressure holding function.Generally be every grade of speed governing oil circuit check valve of connecting respectively, this state forms 4 road check valve oil circuits down to the pressurize of pressurization oil cylinder, and the precision of pressurize is the pressurize error sum of 4 road check valves.Be the check valve of connecting behind the parallelly connected oil circuit of implementation in the present embodiment, make that the precision of pressurize is one road check valve error, the pressurize precision improves greatly.
Be parallel with electromagnetic relief valve 18,17 respectively on working connection a and the pressurization oil circuit b.On the pressurization oil circuit b between multistep speed regulation module c and the little oil pump 2, also be in series with accurate filter 4.
Operation principle:
Normal dry running state: electromagnetic relief valve 18,17 dead electricity, big oil pump 3 and little oil pump 2 fuel-displaced oil sump tanks respectively.
The ultrahigh speed pressurized state: electromagnetic relief valve 18,17; Big oil pump 3 gets into multistep speed regulation module c through working connection a with pressurization oil circuit b fuel feeding respectively with little oil pump 2; Set requirement control according to parameter and open solenoid directional control valve A7, fluid through solenoid directional control valve A7 and little valve entering pressurization oil cylinder, the pressurization of realization pressurization oil cylinder ultrahigh speed is descending.
High speed pressurized state: electromagnetic relief valve 18; 17; Big oil pump 3 gets into multistep speed regulation module c through working connection a with pressurization oil circuit b fuel feeding respectively with little oil pump 2; Solenoid directional control valve B8 among the multistep speed regulation module c gets electric, and fluid gets into pressurization oil cylinder 16 through solenoid directional control valve B8, high speed flow speed control valve 9 and dead slow speed flow speed control valve 11, and it is descending to realize that pressurization oil cylinder 16 pressurizes at a high speed
The middling speed pressurized state: electromagnetic relief valve 17; Electromagnetic relief valve 18 dead electricity, big oil pump 3 fuel-displaced oil sump tanks, little oil pump 2 gets into multistep speed regulation module c through pressurization oil circuit b fuel feeding; Solenoid directional control valve C6 among the multistep speed regulation module c gets; Hydraulic oil is through solenoid directional control valve C6, and middling speed flow speed control valve 10 gets into the pressurization oil cylinder with dead slow speed flow speed control valve 11, realizes that the middling speed pressurization is descending.
The low speed pressurized state: electromagnetic relief valve 17; Electromagnetic relief valve 18 dead electricity, big oil pump 3 fuel-displaced oil sump tanks, little oil pump 2 gets into multistep speed regulation module c through pressurization oil circuit b fuel feeding; Hydraulic oil gets into the pressurization oil cylinder through dead slow speed flow speed control valve 11, realizes that the low speed pressurization is descending.
Claims (8)
1. magnetic material wet type forming hydraulic press independent loop pressurized hydraulic system; Comprise pressurization oil cylinder, big oil pump and working connection; Said pressurization oil cylinder passes through the working connection feed flow by big oil pump; It is characterized in that: also comprise a pressurization oil circuit parallelly connected with working connection, the little oil pump feed flow of said compressed oil route is serially connected with the module that is used for fuel supply flow rate is carried out multistep speed regulation and pressurize on the said pressurization oil circuit.
2. magnetic material wet type forming hydraulic press independent loop pressurized hydraulic according to claim 1 system is characterized in that: said multistep speed regulation module is regulated oil circuit, is regulated oil circuit, middling speed at a high speed and regulate oil circuit and dead slow speed and regulate the oil circuit parallel connection and be provided with and form by ultrahigh speed; Said ultrahigh speed is regulated oil circuit, high speed is regulated on oil circuit, middling speed adjusting oil circuit and the dead slow speed adjusting oil circuit and is serially connected with the pressurize check valve respectively.
3. magnetic material wet type forming hydraulic press independent loop pressurized hydraulic according to claim 2 system is characterized in that: it is solenoid directional control valve A that said ultrahigh speed is regulated oil circuit.
4. magnetic material wet type forming hydraulic press independent loop pressurized hydraulic according to claim 2 system is characterized in that: it is solenoid directional control valve B serial connection high speed flow speed control valve that said high speed is regulated oil circuit.
5. magnetic material wet type forming hydraulic press independent loop pressurized hydraulic according to claim 2 system is characterized in that: it is solenoid directional control valve C serial connection middling speed flow speed control valve that said middling speed is regulated oil circuit.
6. magnetic material wet type forming hydraulic press independent loop pressurized hydraulic according to claim 2 system is characterized in that: it is the dead slow speed flow speed control valve that said dead slow speed is regulated oil circuit.
7. magnetic material wet type forming hydraulic press independent loop pressurized hydraulic according to claim 1 system is characterized in that: all be parallel with electromagnetic relief valve on said working connection and the pressurization oil circuit.
8. magnetic material wet type forming hydraulic press independent loop pressurized hydraulic according to claim 1 system is characterized in that: be in series with accurate filter on the pressurization oil circuit between said multistep speed regulation module and the little oil pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220151378 CN202571278U (en) | 2012-04-12 | 2012-04-12 | Hydraulic system with independent-loop pressurization of magnetic-material wet forming hydraulic machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220151378 CN202571278U (en) | 2012-04-12 | 2012-04-12 | Hydraulic system with independent-loop pressurization of magnetic-material wet forming hydraulic machine |
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| Publication Number | Publication Date |
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| CN202571278U true CN202571278U (en) | 2012-12-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220151378 Expired - Fee Related CN202571278U (en) | 2012-04-12 | 2012-04-12 | Hydraulic system with independent-loop pressurization of magnetic-material wet forming hydraulic machine |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102632236A (en) * | 2012-04-12 | 2012-08-15 | 南通市腾达锻压机床厂 | Individual loop pressurizing hydraulic system of wet type forming hydraulic machine of magnetic material |
| CN104043828A (en) * | 2014-06-26 | 2014-09-17 | 南通市腾达锻压机床厂 | Servo control system device applied to wet-type magnetic material molding |
| CN106368994A (en) * | 2016-11-22 | 2017-02-01 | 天津修洁科技有限公司 | Electro-hydraulic control pressure machine |
-
2012
- 2012-04-12 CN CN 201220151378 patent/CN202571278U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102632236A (en) * | 2012-04-12 | 2012-08-15 | 南通市腾达锻压机床厂 | Individual loop pressurizing hydraulic system of wet type forming hydraulic machine of magnetic material |
| CN104043828A (en) * | 2014-06-26 | 2014-09-17 | 南通市腾达锻压机床厂 | Servo control system device applied to wet-type magnetic material molding |
| CN106368994A (en) * | 2016-11-22 | 2017-02-01 | 天津修洁科技有限公司 | Electro-hydraulic control pressure machine |
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Legal Events
| Date | Code | Title | Description |
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| 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: 20121205 Termination date: 20150412 |
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| EXPY | Termination of patent right or utility model |