CN206474659U - A kind of mesohigh Casting Equipment control pressurer system - Google Patents
A kind of mesohigh Casting Equipment control pressurer system Download PDFInfo
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- CN206474659U CN206474659U CN201621220004.1U CN201621220004U CN206474659U CN 206474659 U CN206474659 U CN 206474659U CN 201621220004 U CN201621220004 U CN 201621220004U CN 206474659 U CN206474659 U CN 206474659U
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Abstract
The utility model discloses a kind of mesohigh Casting Equipment control pressurer system and control method, including injection oil cylinder, high tension loop, low tension loop；Injection oil cylinder is connected with high tension loop and low tension loop respectively；High tension loop includes the first magnetic valve, the first inserted valve, fuel tank；First magnetic valve is connected with the first inserted valve, and the first inserted valve is connected with fuel tank, the unlatching of first the first inserted valve of solenoid valve control, and the oil of injection oil cylinder directly lets out fuel tank；Low tension loop includes the second magnetic valve, the second inserted valve, piston accumulator；Second the second inserted valve of solenoid valve control is opened, and oil enters piston accumulator by the second inserted valve, and piston accumulator produces back pressure, and back pressure prevents piston-advance from producing low pressure.Casting pressure control of the present utility model can be adjusted between 0.1 50MPa, while casting strength and consistency is ensured, reduced equipment mold clamping force, realized and big casting is produced with small equipment, improved the production cycle, shortened production cost.
Description
Technical field
The utility model patent belongs to foundry machinery field, more particularly to a kind of mesohigh Casting Equipment Stress control system
System.
Background technology
With automobile and the light-weighted propulsion of communication, the developing trend for being developed into future of high-strength structure part.At present
For the structural member of wall thickness, moulding process main at present is extrusion casint, low pressure casting and gravitational casting.Three's technique has
Difference advantages, Extrution casting technique is adapted to the high structural member of production batch, intensity requirement, and production efficiency is fast, dimensional accuracy height,
Casting compactness is high.But extrusion casint by equipment and mold cost due to being limited, large-scale structural member Casting Equipment cost
Higher, technology is not overripened, and die cost is high, and the life-span is relatively low.For the structural member of large-scale wall thickness, by taking wheel hub as an example, mainly adopt
It is low-pressure casting process, low-pressure casting process has following two problems due to casting pressure is low；1 is spoke
Center intensity is not high；2 be that setting time is longer, and one 18 cun of wheel hub production cycle is 4-6 minutes.
In order to solve, current large-sized structural parts low-pressure casting process efficiency is slow, casting strength is low, extrusion casint large scale structure
The problem of part cost is high, equipment and mold is complicated.Team by researching and developing for many years, when system research casting pressure is to casting solidification
Between and interior tissue influence, develop a kind of novel medium voltage casting equipment, casting pressure is controlled between 0.1-50MPa, with
Low pressure casting is compared, and casting pressure is obviously improved, and shortens setting time.The problem of middle die casting manufacturing apparatus be how
Casting pressure is accurately controlled, we have developed a kind of novel casting control pressurer system, by the double oil circuit back pressure systems of oil cylinder,
By the pressure differential of two-way oil circuit come the thrust of control cylinder, so as to be accurately controlled the pressure of injection system.Solve middle height
The problem of switching is made in die casting, casting pressure can be accurately controlled in the range of 0.1-50MPa, is had a good application prospect.
Utility model content
1st, the purpose of this utility model.
The utility model is for the problem of conventional low Casting Equipment casting pressure is low, casting compactness is not high；Extruding casting
Make casting pressure height, the problem that equipment volume is big, mold clamping force is big, die cost is high, it is proposed that a kind of extrusion casting apparatus is waved
The double back pressure systems of cylinder.
2nd, the technical scheme that the utility model is used.
The utility model proposes a kind of mesohigh control system for casting equipment, including injection oil cylinder, high tension loop, low pressure
Loop；Injection oil cylinder is connected with high tension loop and low tension loop respectively；High tension loop include the first magnetic valve, the first inserted valve,
Fuel tank；First magnetic valve is connected with the first inserted valve, and the first inserted valve is connected with fuel tank, first the first inserted valve of solenoid valve control
Unlatching, injection oil cylinder oil directly let out fuel tank；Low tension loop includes the second magnetic valve, the second inserted valve, piston type energy storage
Device；Second the second inserted valve of solenoid valve control is opened, and oil enters piston accumulator, piston accumulator by the second inserted valve
Back pressure is produced, back pressure prevents piston-advance from producing low pressure.
Further in embodiment, in addition to the 3rd magnetic valve, the 3rd magnetic valve and injection oil cylinder, high tension loop
With low tension loop connection, system pressure oil is provided to injection oil cylinder, high tension loop and low tension loop by the 3rd magnetic valve.
Further in embodiment, low tension loop is also connected including gas bomb with piston accumulator.
Further in embodiment, in addition to meter valve and gas cylinder switch, respectively with piston accumulator and storage
Gas cylinder is connected.
Further in embodiment, in addition to nitrogen pressure table, it is connected with piston accumulator and gas bomb.
Further in embodiment, in addition to shot sleeve pressure gauge, it is connected with injection oil cylinder.
Mesohigh Casting Equipment control method, when system pressure selection is high-pressure casting pattern, the first solenoid valve control the
One inserted valve is opened, and the oil of injection oil cylinder is directly let out in fuel tank, and back pressure is almost nil；
When system pressure selection is low-voltage, first the first inserted valve of solenoid valve control is closed, what injection oil cylinder was let out
Oil can not oil return cylinder；Second the second inserted valve of solenoid valve control is opened, and oil enters piston accumulator by the second inserted valve, living
Plug accumulator has a back pressure presence, and piston accumulator provides a back pressure, and back pressure prevents piston-advance, passes through piston
The power that two pressure differentials control piston of accumulator and injection oil cylinder is promoted, realizes that piston rod is smoothly promoted under low pressure, real
The control that the piston rod under control low pressure promotes strength and speed is showed.
Further in embodiment, system pressure when going to adjust high pressure by pressure-reducing valve.
3rd, the beneficial effects of the utility model.
(1) back-pressure of the system pressure of the utility model piston accumulators rodless cavity and injection oil cylinder rod chamber is poor
Carry out the accurate pressure for controlling piston to promote, it is accurate reliable.
(2) the utility model extends the casting pressure scope of Casting Equipment, commonly by the switching device of mesohigh
High-pressure casting apparatus for casting pressure can not accomplish 0.1MPa pressure, it is common minimum to just unstable after 30MPa, tremble
Dynamic phenomenon.
(3) present apparatus can compare big casting as a result of mesohigh switching device in the small equipment of mold clamping force
Part, casting pressure can be turned down, and control very precisely, 400t Casting Equipments can be zero that original 800 tons of die castings are done
Part, reduces production cost.
(4) because low-pressure die casting plant carries out filling type and feeding by air pressure, system pressure can only be up to
0.1MPa, casting compactness is not high, and the mesohigh apparatus for casting pressure that the utility model is proposed can be in 0.1MPa-50Pma
Between precisely adjust, solve the problem of low-pressure die casting plant, have a good application prospect.
（5）, casting pressure of the present utility model control can be adjusted between 0.1-50MPa, ensure casting strength and
While consistency, equipment mold clamping force is reduced, Clamping System is simplified, it is possible to achieve big casting is produced with small equipment,
Improve the production cycle, shorten production cost.
Brief description of the drawings
Fig. 1 is a kind of new mesohigh Casting Equipment control pressurer system.
The utility model type patent is further illustrated below in conjunction with the accompanying drawings
A kind of new mesohigh control system for casting equipment system is mainly comprising following：1. the gas cylinder of meter valve 2. switch 3. is stored up
The system pressures of 7. 8. first inserted valve of fuel tank of gas cylinder 4. second magnetic valve, 5. second 6. first magnetic valve of inserted valve 9.
10. the nitrogen pressure table of 13. piston accumulator of the 3rd magnetic valve 11. system pressure, 12. injection oil cylinders 14..
Embodiment
Embodiment 1
In order that the public can be more clearly understood from technical spirit of the present utility model and beneficial effect, applicant will be
Elaborate by way of examples below, but the description to embodiment is not the limitation to the utility model scheme,
Any only formal rather than substantial equivalent transformation made according to the utility model design is regarded as this reality
With new technical scheme category.
By taking 800t mesohigh Casting Equipments as an example, a kind of new mesohigh control system for casting equipment system mainly include with
Under：1. the fuel tank 8. of 5. second 6. first magnetic valve of inserted valve of the gas cylinder of meter valve 2. switch 3. gas bomb, 4. second magnetic valve 7.
The oil piston type energy storage of 12. injection oil cylinder 13. of the system pressures of first inserted valve, 9. the 3rd magnetic valve of system pressure 10. 11.
The nitrogen pressure table of device 14.
By taking 800t mesohigh Casting Equipments as an example, a kind of new mesohigh control system for casting equipment system is mainly included
Below：Meter valve 1, gas cylinder switch 2, accumulator 3, the second magnetic valves 4, the second inserted valve 5, the first magnetic valve 6, fuel tank 7,
First inserted valve 8, system pressure 9, the 3rd magnetic valve 10, system pressures 11, injection oil cylinder 12, piston accumulator 13, nitrogen
Pressure gauge 14；
System constitutes high tension loop, low tension loop；Injection oil cylinder is connected with high tension loop and low tension loop respectively；Height is pushed back
Road includes the first magnetic valve, the first inserted valve, fuel tank；First magnetic valve is connected with the first inserted valve, the first inserted valve and fuel tank
Connection, the unlatching of first the first inserted valve of solenoid valve control, the oil of injection oil cylinder directly lets out fuel tank；Low tension loop includes second
Magnetic valve, the second inserted valve, piston accumulator；Second the second inserted valve of solenoid valve control is opened, and oil passes through the second inserted valve
Into piston accumulator, piston accumulator produces back pressure, and back pressure prevents piston-advance from producing low pressure；3rd electromagnetism
Valve, the 3rd magnetic valve are connected with injection oil cylinder, high tension loop and low tension loop, system pressure oil by the 3rd magnetic valve provide to
Injection oil cylinder, high tension loop and low tension loop；Low tension loop is also connected including gas bomb with piston accumulator.Also include air pressure
Power table, meter valve and gas cylinder switch, are connected with piston accumulator and gas bomb respectively.Also include nitrogen, with piston accumulator
With gas bomb connection.Also include shot sleeve pressure gauge, be connected with injection oil cylinder.
The specific switch mode of mesohigh switching device is as shown in Figure 1：
It is high-pressure casting pattern when system pressure selection is between 9-14MPa, now the first magnetic valve 6 control first is inserted
Dress valve 8 is opened, and the oil of injection oil cylinder is directly let out in fuel tank 7, and back pressure is almost nil.In the case where injection cylinder area is constant,
Pressure is bigger, and injection power is bigger, and adjustment high-pressure casting injection power is generally gone to adjust system pressure by pressure-reducing valve, and adjusting range is about
9MPa ~ 14MPa, if desired smaller injection power, during less than 9MPa system can according to contrasted in program computing automatically switch to it is low
Die casting modeling formula.
When needing less pressure, we switch to low-voltage, low pressure casting principle：When injection power needs very little
When, 6. first magnetic valves 6 control the first inserted valve 8. to close, and the oil that injection oil cylinder is let out can not oil return cylinder.Second magnetic valve 5. is controlled
The second inserted valve (2) 6 opening is made, oil enters piston accumulator by the second inserted valve 6, and accumulator has a back pressure and deposited
In accumulator one back pressure of offer, back pressure prevention piston-advance；Such as rod chamber is 1 with rodless cavity area ratio:2, system pressure
For 9MPa, accumulator nitrogen pressure is 16MPa,（Power is multiplied by area equal to pressure）Injection power is equal to 8MPa and is multiplied by area 2, subtracts
Go 16MPa to be multiplied by area 1, also control the power that piston is promoted by two pressure differentials, can more accurately control injection power, it is real
Present low pressure lower piston rod is smoothly promoted, and realizes the control that the piston rod under control low pressure promotes strength and speed.
Claims (6)
1. a kind of mesohigh control system for casting equipment, it is characterised in that：Including injection oil cylinder, high tension loop, low tension loop；Pressure
Oil cylinder is penetrated to be connected with high tension loop and low tension loop respectively；High tension loop includes the first magnetic valve, the first inserted valve, fuel tank；The
One magnetic valve is connected with the first inserted valve, and the first inserted valve is connected with fuel tank, the unlatching of first the first inserted valve of solenoid valve control,
The oil of injection oil cylinder directly lets out fuel tank；Low tension loop includes the second magnetic valve, the second inserted valve, piston accumulator；Second
The inserted valve of solenoid valve control second is opened, and oil enters piston accumulator by the second inserted valve, and piston accumulator produces the back of the body
Pressure, back pressure prevents piston-advance from producing low pressure.
2. mesohigh control system for casting equipment according to claim 1, it is characterised in that：Also include the 3rd magnetic valve,
3rd magnetic valve is connected with injection oil cylinder, high tension loop and low tension loop, and system pressure oil is provided to pressure by the 3rd magnetic valve
Penetrate oil cylinder, high tension loop and low tension loop.
3. mesohigh control system for casting equipment according to claim 1, it is characterised in that：Low tension loop also includes gas storage
Bottle is connected with piston accumulator.
4. mesohigh control system for casting equipment according to claim 3, it is characterised in that：Also include meter valve and gas cylinder
Switch, is connected with piston accumulator and gas bomb respectively.
5. mesohigh control system for casting equipment according to claim 1, it is characterised in that：Also include nitrogen pressure table,
It is connected with piston accumulator and gas bomb.
6. mesohigh control system for casting equipment according to claim 1, it is characterised in that：Also include shot sleeve pressure
Table, is connected with injection oil cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621220004.1U CN206474659U (en) | 2016-11-14 | 2016-11-14 | A kind of mesohigh Casting Equipment control pressurer system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621220004.1U CN206474659U (en) | 2016-11-14 | 2016-11-14 | A kind of mesohigh Casting Equipment control pressurer system |
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| CN206474659U true CN206474659U (en) | 2017-09-08 |
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| CN201621220004.1U Active CN206474659U (en) | 2016-11-14 | 2016-11-14 | A kind of mesohigh Casting Equipment control pressurer system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106424652A (en) * | 2016-11-14 | 2017-02-22 | 苏州慧驰轻合金精密成型科技有限公司 | Pressure control system and control method of middle-high-pressure casting equipment |
| CN110918937A (en) * | 2019-11-07 | 2020-03-27 | 宁波力劲科技有限公司 | Hydraulic control system for injection speed of die casting machine and control method thereof |
-
2016
- 2016-11-14 CN CN201621220004.1U patent/CN206474659U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106424652A (en) * | 2016-11-14 | 2017-02-22 | 苏州慧驰轻合金精密成型科技有限公司 | Pressure control system and control method of middle-high-pressure casting equipment |
| CN110918937A (en) * | 2019-11-07 | 2020-03-27 | 宁波力劲科技有限公司 | Hydraulic control system for injection speed of die casting machine and control method thereof |
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