CN206129751U - Hydraulic system - Google Patents
Hydraulic system Download PDFInfo
- Publication number
- CN206129751U CN206129751U CN201620988065.6U CN201620988065U CN206129751U CN 206129751 U CN206129751 U CN 206129751U CN 201620988065 U CN201620988065 U CN 201620988065U CN 206129751 U CN206129751 U CN 206129751U
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- valve
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- oil circuit
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- hydraulic system
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Abstract
The utility model discloses a hydraulic system, penetrating hydro -cylinder, power supply including pressing, pressing that penetrate the oil circuit and the oil circuit is penetrated to fast the pressure slowly, the power supply is used for penetrating the oil circuit and penetrating the oil circuit and provide hydraulic oil with fast the pressure for pressing slowly, presses slowly to penetrate the oil circuit and be equipped with and be used for control to press commutate valve and be used for the regulating press to penetrate the first proportional valve that has the oil return speed in thick stick chamber of hydro -cylinder of the owner who penetrates the operating condition of hydro -cylinder, the fast pressure is penetrated the oil circuit and is equipped with throttle main valve and first direction valve, and the throttle main valve is used for the control pressure to penetrate the oil feeding speed in the no pole chamber of hydro -cylinder, the first direction valve is used for the guide the fast oil return direction of penetrating the oil circuit of pressing. The utility model discloses set up the proportional valve on the oil return oil circuit of oil circuit is penetrated to the pressure slowly with on pressing the oil feed oil circuit of penetrating the oil circuit soon, come the regulation of realization to two oil circuits through the aperture of turndown ratio example valve to realize sparing pressing with higher speed to penetrate in the action is penetrated to the pressure slowly and penetrate with the multistage pressure, fast pressure realizes 0 in penetrating the action the infinitely variable control of 100% flow, control accuracy is high. The utility model discloses a hydraulic system control method has the characteristics that control accuracy is high.
Description
Technical field
The utility model is related to cold-chamber die casting machine technical field, especially a kind of hydraulic system.
Background technology
Current cold-chamber die casting machine technology the inside, either in the oil circuit of fast shot or in the oil circuit of slow shot,
All without the function of electrodeless regulation injection speed, thus result in slow shot action and be difficult to even acceleration injection and multistage injection；
And then easily there is product overlap and cannot realize the problem of step-less adjustment in the action of fast shot.Further, since fast shot oil circuit
Changes in flow rate amount it is larger, when the choke valve from low discharge is larger in oil circuit flow, it may appear that what circulation was not enough
Situation, and select the choke valve of big flow when oil circuit flow is less, then the low situation of control accuracy occurs.Therefore,
Need a kind of new hydraulic system of exploitation.
Utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art, there is provided a kind of hydraulic system.
In order to achieve the above object, the utility model is employed the following technical solutions：
Hydraulic system, including injection oil cylinder, power source, slow shot oil circuit and fast shot oil circuit, the power source be used for be
The slow shot oil circuit and fast shot oil circuit provide hydraulic oil, and the slow shot oil circuit is provided with for controlling the injection oil cylinder
The main reversing valve of working condition and for adjust the injection oil cylinder have thick stick chamber oil return speed the first proportioning valve；It is described fast
Injection oil circuit is provided with throttling main valve and first direction valve, and the throttling main valve is used to control entering for the rodless cavity of the injection oil cylinder
Speed oil, the first direction valve is used to guide the oil return direction of the fast shot oil circuit.
Compared with prior art, the utility model is oily with the oil-feed of fast shot oil circuit on the oil return circuit of slow shot oil circuit
Set scale valve on road, realizes the regulation to two oil circuits, so as in slow shot action by adjusting the aperture of proportioning valve
Even acceleration injection and multistage injection are realized, the step-less adjustment of 0-100% flows is realized in fast shot action.
Further, the throttling main valve includes the second proportioning valve, second direction valve and the 3rd logical valve, second ratio
The oil-in of valve and second direction valve is connected respectively with the power source, the oil-out of second proportioning valve and second direction valve
Connect with the oil-feed working hole of the 3rd logical valve, the fuel-displaced working hole of the 3rd logical valve and the nothing of the injection oil cylinder
Rod cavity is connected, and when the flow of fast shot oil circuit is little or equal to 50%, the second proportioning valve conducting, second direction valve is closed；
When the flow of the fast shot oil circuit is more than 50%, second proportioning valve and second direction valve are turned on.
Further, the second direction valve includes the second reversal valve and the second logical valve, second reversal valve with it is described
The control port connection of the second logical valve, for controlling the closing of second logical valve and conducting, second proportioning valve and/
Or second logical valve conducting so that the 3rd logical valve conducting.
Further, the oil-feed working hole of second logical valve is connected with the power source, the fuel-displaced work of the second logical valve
Make mouth to connect with the oil-feed working hole of the 3rd logical valve.
Further, the first direction valve includes the first reversal valve and the first logical valve, first reversal valve with it is described
The control end connection of the first logical valve, for controlling the conducting of first logical valve and close, the 3rd logical valve enters
Oily working hole is connected with the rod chamber of the injection oil cylinder, and the fuel-displaced working hole of the first logical valve is connected with fuel tank.
Further, the main reversing valve is provided with oil-in, oil return opening and two actuator ports, a job of the main reversing valve
Hydraulic fluid port is connected with the rodless cavity of the injection oil cylinder, and another actuator port of the main reversing valve has bar with the injection oil cylinder
Chamber connects, and the oil-in is connected with the power source, and the oil return opening is connected with fuel tank.
Preferably, the main reversing valve is three-position four-way electromagnetic directional valve, and its middle position is Y types.
Further, the first check valve, the oil return opening are provided between the rodless cavity of the oil-in and the injection oil cylinder
The second check valve is provided with and the rod chamber of the injection oil cylinder between, first check valve is used to limit the fast shot oil circuit
Oil-feed direction, second check valve is used to limit the oil return of the slow shot oil circuit.
Preferably, first check valve is hydraulic control one-way valve.
Of the present utility model that a kind of control method using above-mentioned hydraulic system is also disclosed, the method comprises the steps：
A, when hydraulic system carries out slow shot, main reversing valve and the first proportioning valve is conducted, and control institute
Main reversing valve commutation is stated, power source is connected with the rodless cavity of injection oil cylinder and is made first proportioning valve connect the injection oil
The rod chamber of cylinder, hydraulic oil Jing main reversing valves 31 enter injection oil cylinder, then in the oil return of the first proportioning valve 32 to fuel tank；
B, the aperture by adjusting the first proportioning valve, make injection oil cylinder realize even acceleration slow shot；
C, the first proportioning valve power-off, control main reversing valve commutation, make power source connect with the rod chamber of the injection oil cylinder,
The rodless cavity of the injection oil cylinder is connected with fuel tank, makes injection oil cylinder reset；
D, when the flow that hydraulic system carries out fast shot and fast shot is less than or equal to 50%, second ratio
Valve and first direction valve must be conducted, and hydraulic oil is connected by second proportioning valve and the 3rd logical valve into rodless cavity, institute
The hydraulic oil of injection oil cylinder is stated by first direction valve backflow oil-feed tank, fast shot action is realized；
E, the aperture by adjusting second proportioning valve, control the injection speed of the fast shot oil circuit；
When f, the flow of fast shot are more than 50%, second proportioning valve, first direction valve and second direction valve obtain electric
Conducting, hydraulic oil enters respectively the rodless cavity of injection oil cylinder by the second proportioning valve, second direction valve and the 3rd logical valve, realizes
Fast shot action；
G, the second proportioning valve, first direction valve and/or second direction valve power-off, control main reversing valve commutation, make power source
Connect with the rod chamber of the injection oil cylinder, the rodless cavity of the injection oil cylinder is connected with fuel tank, make injection oil cylinder reset.
Description of the drawings
Fig. 1 is the structural representation of embodiment of the present utility model；
Fig. 2 is the structural representation of embodiment of the present utility model two.
Specific embodiment
Embodiment one：
Referring to Fig. 1, a kind of hydraulic system, including injection oil cylinder 1, power source 2, slow shot oil circuit 3 and fast shot oil circuit 4,
The power source 2 is used to be that the slow shot oil circuit 3 and fast shot oil circuit 4 provide hydraulic oil that described slow shot oil circuit 3 to be provided with
For control the working condition of the injection oil cylinder 1 main reversing valve 31, for adjust the injection oil cylinder 1 have thick stick chamber return
First proportioning valve 32 of speed oil and the second check valve 33 being connected between the main reversing valve 31 and injection oil cylinder 1；It is above-mentioned
Main reversing valve 31 be provided with oil inlet P, oil return inlet T and two actuator port A, B, the oil inlet P is connected with the power source 2,
The oil return inlet T is connected with fuel tank, and an actuator port B of the main reversing valve 31 is connected with the rodless cavity of the injection oil cylinder 1,
Another actuator port A of the main reversing valve 31 is connected with the rod chamber of the injection oil cylinder 1 by the second check valve 33 and is used for
The hydraulic oil for limiting the slow shot oil circuit 3 is back in fuel tank by main reversing valve, so that it is guaranteed that hydraulic oil has to pass through
One proportioning valve 32 returns fuel tank, so can then pass through the aperture of the first proportioning valve 32 of control, realizes the pressure of slow shot oil circuit 3
Firing rate degree is adjusted, and main reversing valve 31 now is O-shaped three position four-way electromagnetic valve；
Described fast shot oil circuit 4 is provided with throttling main valve 41 and first direction valve 42, and the throttling main valve 41 is used to control
The rodless cavity of the injection oil cylinder 1 enters speed oil, and the first direction valve 42 is for guiding returning for the fast shot oil circuit 4
Oily direction, makes the hydraulic oil of fast shot oil circuit 4 by entering back into fuel tank after first direction valve 42, while first direction valve 42 may be used also
Limited with the oil return to slow shot oil circuit 3 so as to have to pass through the first proportioning valve 32 and return fuel tank.The throttling main valve
41 include the second proportioning valve 4111, the logical valve 4112 of second direction valve 412 and the 3rd, second proportioning valve 4111 and second party
Connect with the power source 2 respectively to the oil-in of valve 412, second proportioning valve 4111 and second direction valve 412 it is fuel-displaced
Mouthful connect with an actuator port A of the 3rd logical valve 4112, another actuator port B of the 3rd logical valve 4112 and institute
The rodless cavity connection of injection oil cylinder 1 is stated, the control port X of the 3rd logical valve 4112 is connected with actuator port B, makes the 3rd logical valve
4112 form check valve.
Specifically attachment structure is：
The second direction valve 412 includes the second reversal valve 4121 and the second logical valve 4122, second reversal valve
4121 are connected with the control port of the second logical valve 4122, when the second reversal valve 4121 obtains electric, second logical valve 4122
Conducting, the oil-feed working hole of second logical valve 4122 is connected with the power source 2, the fuel-displaced work of the second logical valve 4122
Mouth is connected with the actuator port A of the 3rd logical valve 4112.
The first direction valve 42 includes the first reversal valve 421 and the first logical valve 422, first reversal valve 421 with
The control end connection of first logical valve 422, for controlling the conducting of first logical valve 422 and closing, described first
The oil-feed working hole of logical valve 422 is connected with the rod chamber of the injection oil cylinder 1, the fuel-displaced working hole of the first logical valve 422 with
Fuel tank is connected, electric by controlling obtaining for the first reversal valve 421, so that the on and off of the first logical valve 422.
Preferably, the second above-mentioned reversal valve 4121 and the first reversal valve 421 are two four-way electromagnetic reversing valves, and second compares
Example valve 4111 has identical circulation with the 3rd logical valve 422.
Used as a kind of preferred scheme, due to hydraulic system, pressure value can be very big when fast shot is carried out, if oil circuit
There is blocking, then burst can easily oil pipe or power source 2, therefore, it can at the fuel-displaced working hole of the 3rd logical valve 4112
One relief valve 5 connected with fuel tank of connection, to prevent pressure value when fast shot too high.
The operation principle of fast shot oil circuit 4 is：
When the flow of fast shot oil circuit 4 is little or equal to 50%, the reversal valve 421 of second proportioning valve 4111 and first
Electricity, turns on the second proportioning valve 4111 and the first logical valve 422, and the hydraulic oil of power source 2 is through the second proportioning valve the 4111, the 3rd
Logical valve 4112 carries out fast shot action into the rodless cavity of injection oil cylinder 1, and the hydraulic oil of the rod chamber of injection oil cylinder 1 is through
One logical valve 422 returns to fuel tank, and now the second logical valve 4122 is closed, therefore, by controlling the second ratio
The aperture of valve 4111 is capable of achieving to carry out high-precision regulation to the speed of fast shot oil circuit 4；
When the flow of the fast shot oil circuit is more than 50%, the second proportioning valve 4111, the second reversal valve 4121 and the
One reversal valve 421 it is electric turn on the second proportioning valve 4111, the second logical valve 4122 and the first logical valve 422, it is little with flow or
Unlike situation equal to 50%, the second logical valve 4122 now is conducting, and its aperture is 100%, and because
Second proportioning valve 4111 and the second logical valve 4122 have identical circulation, therefore, now 50% in fast shot oil circuit 4
Flow can pass through from the second logical valve 4122, and remaining flow then passes through from the second proportioning valve 4111, therefore by adjusting
Second proportioning valve 4111 just easily can be accurately controlled when hydraulic system is in big flow.
Embodiment two：
Referring to Fig. 2, in the present embodiment, from unlike embodiment one in the logical valve 4112 of main reversing valve 31 and the 3rd
The first check valve 34 is provided between fuel-displaced working hole, first check valve 34 is hydraulic control one-way valve, it is used to limit described fast
The oil-feed direction of injection oil circuit 4, prevents it toward the oil return of fuel tank direction；Further, since being provided with hydraulic control one-way valve, master now changes
O-shaped three-position four-way electromagnetic directional valve cannot be used to valve 31, the three-position four-way electromagnetic directional valve for using Y types is needed, because
For if hydraulic control one-way valve long-pending oil can be made using the three-position four-way electromagnetic directional valve of Y types, so as to be at normally opened state, and
The oil return inlet T of the three-position four-way electromagnetic directional valve of Y types is connected with fuel tank, and this makes the oil effectively backflow in hydraulic control one-way valve
To in fuel tank.The present embodiment can reduce whole liquid due to having used the three-position four-way electromagnetic directional valve of hydraulic control one-way valve and Y types
The impact that pressure system is operationally waited, so that it is guaranteed that the safe operation of all parts.
Of the present utility model to also disclose a kind of control method using above-mentioned hydraulic system, the method includes：
A, when hydraulic system carries out slow shot, the proportioning valve 32 of main reversing valve 31 and first is conducted, and control
Make the main reversing valve 31 to commutate, power source 2 is connected with the rodless cavity of injection oil cylinder and connect first proportioning valve 32
The rod chamber of the injection oil cylinder, hydraulic oil Jing main reversing valves 31 enter injection oil cylinder, then through the oil return of the first proportioning valve 32
To in fuel tank；
B, the aperture by adjusting the first proportioning valve 32, make injection oil cylinder realize even acceleration slow shot；
C, the power-off of the first proportioning valve 32, control main reversing valve 31 commutates, and make power source 2 and the injection oil cylinder 1 has bar
Chamber connects, and the rodless cavity of the injection oil cylinder 1 is connected with fuel tank, makes injection oil cylinder 1 reset；
D, when the flow that hydraulic system carries out fast shot and fast shot is less than or equal to 50%, second ratio
Valve 4111 and first direction valve 42 must be conducted, and hydraulic oil is entered by the logical valve 4112 of second proportioning valve 4111 and the 3rd
Rodless cavity, the hydraulic oil of the injection oil cylinder 1 realizes fast shot action by the backflow oil-feed tank of first direction valve 42；
E, the aperture by adjusting second proportioning valve 4111, control the injection speed of the fast shot oil circuit 4；
When f, the flow of fast shot are more than 50%, second proportioning valve 4111, first direction valve 42 and second direction
Valve 412 must be conducted, and now the aperture of second direction valve 412 is 100%, hydraulic oil respectively by the second proportioning valve 4111, the
Two direction valves 412 and the 3rd logical valve 4112 enter the rodless cavity of injection oil cylinder 1, realize fast shot action；
G, the second proportioning valve 4111, first direction valve 42 and/or the power-off of second direction valve 412, control main reversing valve 31 is changed
To, power source 2 is connected with the rod chamber of the injection oil cylinder 1, the rodless cavity of the injection oil cylinder 1 is connected with fuel tank, makes pressure
Penetrate oil cylinder reset.
The announcement and teaching of book according to the above description, the utility model those skilled in the art can also be to above-mentioned reality
The mode of applying is changed and changed.Therefore, the utility model is not limited to specific embodiment disclosed and described above, right
Some modifications and changes of the present utility model should also be as falling in scope of the claims of the present utility model.Additionally, to the greatest extent
Some specific terms used in pipe this specification, but these terms are merely for convenience of description, not to the utility model
Constitute any restriction.
Claims (9)
1. hydraulic system, it is characterised in that：Including injection oil cylinder, power source, slow shot oil circuit and fast shot oil circuit, the power
Source is used to provide hydraulic oil for the slow shot oil circuit and fast shot oil circuit, and the slow shot oil circuit is provided with for controlling the pressure
Penetrate the working condition of oil cylinder main reversing valve and for adjust the injection oil cylinder have thick stick chamber oil return speed the first ratio
Valve；The fast shot oil circuit is provided with throttling main valve and first direction valve, and the throttling main valve is used to control the injection oil cylinder
Rodless cavity enters speed oil, and the first direction valve is used to guide the oil return direction of the fast shot oil circuit.
2. hydraulic system according to claim 1, it is characterised in that：It is described throttling main valve include the second proportioning valve, second
The oil-in of direction valve and the 3rd logical valve, second proportioning valve and second direction valve is connected respectively with the power source, institute
The oil-out for stating the second proportioning valve and second direction valve is connected with the oil-feed working hole of the 3rd logical valve, the 3rd logic
The fuel-displaced working hole of valve is connected with the rodless cavity of the injection oil cylinder, when the flow of fast shot oil circuit is little or equal to 50%, institute
The conducting of the second proportioning valve is stated, second direction valve is closed；When the flow of the fast shot oil circuit is more than 50%, second ratio
Valve and second direction valve are turned on.
3. hydraulic system according to claim 2, it is characterised in that：The second direction valve includes the second reversal valve and the
Two logical valves, second reversal valve is connected with the control port of second logical valve, for controlling second logical valve
Closing with conducting, second proportioning valve and/or the second logical valve conducting so that the 3rd logical valve conducting.
4. hydraulic system according to claim 3, it is characterised in that：The oil-feed working hole of second logical valve with it is described
Power source is connected, and the fuel-displaced working hole of the second logical valve is connected with the oil-feed working hole of the 3rd logical valve.
5. hydraulic system according to claim 2, it is characterised in that：The first direction valve includes the first reversal valve and the
One logical valve, first reversal valve is connected with the control end of first logical valve, for controlling first logical valve
Conducting is connected with closing, the oil-feed working hole of the 3rd logical valve with the rod chamber of the injection oil cylinder, the first logical valve
Fuel-displaced working hole is connected with fuel tank.
6. hydraulic system according to claim 1, it is characterised in that：The main reversing valve be provided with oil-in, oil return opening and
Two actuator ports a, actuator port of the main reversing valve is connected with the rodless cavity of the injection oil cylinder, the main reversing valve
Another actuator port is connected with the rod chamber of the injection oil cylinder, and the oil-in is connected with the power source, the oil return opening
Connect with fuel tank.
7. hydraulic system according to claim 6, it is characterised in that：The main reversing valve is 3-position 4-way electromagnetic switch
Valve.
8. hydraulic system according to claim 6, it is characterised in that：The rodless cavity of the oil-in and the injection oil cylinder
Between be provided between the rod chamber of the first check valve, the oil return opening and the injection oil cylinder and be provided with the second check valve, described
One check valve is used to limit the oil-feed direction of the fast shot oil circuit, and second check valve is used to limit the slow shot oil circuit
Oil return.
9. hydraulic system according to claim 8, it is characterised in that：First check valve is hydraulic control one-way valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620988065.6U CN206129751U (en) | 2016-08-30 | 2016-08-30 | Hydraulic system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620988065.6U CN206129751U (en) | 2016-08-30 | 2016-08-30 | Hydraulic system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206129751U true CN206129751U (en) | 2017-04-26 |
Family
ID=58565573
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620988065.6U Withdrawn - After Issue CN206129751U (en) | 2016-08-30 | 2016-08-30 | Hydraulic system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206129751U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106438523A (en) * | 2016-08-30 | 2017-02-22 | 广东宝洋科技有限公司 | Hydraulic system and control method thereof |
| CN111442001A (en) * | 2020-03-20 | 2020-07-24 | 宁波海天金属成型设备有限公司 | Oil circuit structure for double closed-loop control of injection speed and injection force and control mode |
-
2016
- 2016-08-30 CN CN201620988065.6U patent/CN206129751U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106438523A (en) * | 2016-08-30 | 2017-02-22 | 广东宝洋科技有限公司 | Hydraulic system and control method thereof |
| CN106438523B (en) * | 2016-08-30 | 2018-04-27 | 广东宝洋科技有限公司 | Hydraulic system and its control method |
| CN111442001A (en) * | 2020-03-20 | 2020-07-24 | 宁波海天金属成型设备有限公司 | Oil circuit structure for double closed-loop control of injection speed and injection force and control mode |
| CN111442001B (en) * | 2020-03-20 | 2022-06-10 | 宁波海天金属成型设备有限公司 | Oil circuit structure for double closed-loop control of injection speed and injection force and control mode |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20170426 Effective date of abandoning: 20180427 |
|
| AV01 | Patent right actively abandoned |