CN107639782A - EPS automatic moulding machine hydraulic control systems - Google Patents
EPS automatic moulding machine hydraulic control systems Download PDFInfo
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- CN107639782A CN107639782A CN201711012625.XA CN201711012625A CN107639782A CN 107639782 A CN107639782 A CN 107639782A CN 201711012625 A CN201711012625 A CN 201711012625A CN 107639782 A CN107639782 A CN 107639782A
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- valve
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- electromagnetic relief
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- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
A kind of EPS automatic moulding machines hydraulic control system, described hydraulic control system includes fuel tank, hydraulic pump, electromagnetic relief valve, electromagnetic relief valve, different valve, electro-hydraulic reversing valve, solenoid directional control valve, Solenoid ball valve, oil-feed flow speed control valve is employed, and being accurately positioned for the plastic molding presses such as EPS is realized by balanced valve.The present invention can be precisely controlled to the position of oil cylinder, and product error is strict controlled within ± 0.2mm.Compared with use ratio valve controls, operation is simpler, and cost substantially reduces.Because requirement of the flow control valve to fluid is much lower relative to proportional control valve, so seldom because the fine impurity of fluid breaks down.
Description
Technical field
It is applied to the supporting hydraulic systems of plastic molding press such as EPS the present invention relates to a kind of.Particularly to product design
Size has the user of strict required precision.
Background technology
Current foamed forming machine, is accurately positioned due to that can not realize, causes product size 2~3mm mistake often occur
Difference, the weight of product cannot be guaranteed unanimously, to cause percent defective to increase, cost substantially increases.For the higher product of required precision,
Old forming machine can not be processed substantially due to the limitation of control accuracy.
The content of the invention
Present invention offer one kind, which can be realized, to be accurately positioned, and trueness error is not more than ± 0.2mm, can greatly improve product
Dimensional accuracy, the EPS automatic moulding machine hydraulic control systems that percent defective substantially reduces.
The present invention is achieved by the following technical solution：A kind of EPS automatic moulding machines hydraulic control system, its is main
Technical characteristic is that described hydraulic control system includes fuel tank, hydraulic pump, electromagnetic relief valve, electromagnetic relief valve, and different valve is electro-hydraulic
Reversal valve, solenoid directional control valve, Solenoid ball valve, oil-feed flow speed control valve is employed, and moulded plastic forming machine is realized by balanced valve
Be accurately positioned, the import of wherein hydraulic pump is connected with oil absorption filter, is connected by pump block shaft coupling with motor, hydraulic pump
Small pump discharge is connected with check valve and electromagnetic relief valve, and the big pump discharge of hydraulic pump is connected with check valve, electromagnetic relief valve, and two
The outlet of individual electromagnetic relief valve and electromagnetic relief valve is connected with cooler, and cooler oil return box, the outlet of two check valves is simultaneously
Connect the import P of electro-hydraulic reversing valve, and the import of Solenoid ball valve and the import of flow speed control valve, the outlet of Solenoid ball valve and flow speed control valve and
The import P of solenoid directional control valve is connected, and the oil return inlet T of solenoid directional control valve and electro-hydraulic reversing valve also accesses cooler and oil return box；Electricity
The working hole A of magnetic reversal valve is connected with balanced valve, and balanced valve is connected with the working hole B of electro-hydraulic reversing valve, the work of solenoid directional control valve
Make mouth B with the working hole A of electro-hydraulic reversing valve to be connected, the working hole A of electro-hydraulic reversing valve is by hydraulic control one-way valve and oil cylinder without bar
Chamber is connected, and the working hole B of electro-hydraulic reversing valve is connected with the oil return inlet T of electro-hydraulic reversing valve, the import P of electro-hydraulic reversing valve and electro-hydraulic changes
It is connected to the working hole A of valve, the working hole B of electro-hydraulic reversing valve connects the rod chamber of oil cylinder by hydraulic control one-way valve.
The outlet of described two check valves connects pressure meter switch, pressure gauge.
This hydraulic system uses first in the plastic molding press such as EPS field, has at a high speed, no impact, what is significantly saved is excellent
Point.
A., must be electric by electromagnet 1, electromagnet 2, electromagnet 4, electromagnet 8 during oil cylinder stretching, will can have
The oil return of rod cavity significantly improves as hydraulic oil press-in rodless cavity, oil cylinder speed again, both can reduce the operating time, more can be big
Width reduces the power of motor, reaches the effect significantly saved.
B. when oil cylinder is retracted, oil cylinder speed is than due to big, return flow is very big, by electromagnet 1, electromagnet 3,
Electromagnet 7, electromagnet 8 must be electric, can both realize and move back at a high speed by part oil return by staying seam circuit electromagnetic valve 24 to shunt
Return, while avoid heating, effectively reduce energy consumption.
C. because the meticulous configuration in above-mentioned loop, the hydraulic system contrast with old machine, obvious reduction of generating heat, avoid
Because the fluid that system heat generation is brought is revealed, component wear, or even phenomena such as machine down.Maintenance rate is relatively very low.
Brief description of the drawings：
Fig. 1 is control system schematic diagram；
Fig. 2 is control system profile Local map.
Embodiment：
As shown in Figure 1 and Figure 2, this EPS automatic moulding machines hydraulic control system, including fuel tank 1, hydraulic pump 4, electromagnetic relief valve 10,
Electromagnetic relief valve 7, different valve 14, electro-hydraulic reversing valve 13, solenoid directional control valve 24, Solenoid ball valve 21, oil-feed flow speed control valve 22 is employed,
And being accurately positioned for the plastic molding presses such as EPS, the wherein import of hydraulic pump 4 and oil absorption filter 3 are realized by balanced valve 25
It is connected, is connected by pump block shaft coupling 5 with motor 6, small pump discharge and check valve 8 and electromagnetic relief valve 7 phase of hydraulic pump 4
Even, the big pump discharge of hydraulic pump 4 is connected with check valve 9, electromagnetic relief valve 10, two electromagnetic relief valves 7 and electromagnetic relief valve 10
Outlet be connected with cooler 20, the oil return box of cooler 20, the outlet of two check valves 8 and check valve 9 connects electro-hydraulic commutation simultaneously
The import P of valve 13, and the import of Solenoid ball valve 21 and the import of flow speed control valve 22, the outlet of Solenoid ball valve 21 and flow speed control valve 22 and
The import P of solenoid directional control valve 24 is connected, and the oil return inlet T of solenoid directional control valve 24 and electro-hydraulic reversing valve 13 also accesses cooler and returned
Fuel tank；The working hole A of solenoid directional control valve 24 is connected with balanced valve 25, and balanced valve 25 is connected with the working hole B of electro-hydraulic reversing valve 13,
The working hole B of solenoid directional control valve 24 is connected with the working hole A of electro-hydraulic reversing valve 13, and the working hole A of electro-hydraulic reversing valve 13 passes through liquid
Control check valve 15.1 is connected with the rodless cavity of oil cylinder, the working hole B of electro-hydraulic reversing valve 13 and the oil return inlet T phase of electro-hydraulic reversing valve 14
Even, the import P of electro-hydraulic reversing valve 14 is connected with the working hole A of electro-hydraulic reversing valve 13, and the working hole B of electro-hydraulic reversing valve 14 passes through liquid
Control the rod chamber that check valve 15.2 connects oil cylinder.
The outlet of check valve 8, check valve 9 connects pressure meter switch 11, pressure gauge 12.2 be air cleaner in figure, 16,17,
18th, 19 be attaching type rubber hose coupling, and 23 be damping, and effect is to slow down the compression shock of the import of flow control valve 22.
Calculated and experiment by substantial amounts of, confirm that the system can be realized and be accurately positioned, trueness error no more than ±
0.2mm, the dimensional accuracy of product can be greatly improved, percent defective substantially reduces, and is more suitable for the higher product of required precision.
The description of position fixing process, such as Fig. 1：By electromagnet 8, electromagnet 5, electromagnet 6 must be electric, and system is unloaded in big pump
Lotus, under the operating mode for only staying small oil pump feed, initially enter and stay tailor's sequence, it is existing to effectively prevent heating caused by big pump while work
As.Before staying seam to act, oil cylinder is slowed down by high speed differential to be acted for low speed, to prevent due to being used to caused by oil cylinder high-speed motion
Property, the shakiness of oil cylinder speed when adding balanced valve 25, not only effectively eliminate the inertia of oil cylinder, and avoiding meter in
It is qualitative.For strict demand of the product size to oil cylinder speed, compensated from built-in pressure and temperature, can fine rill
The flow control valve 22 of regulation is measured, when carrying out speed regulation, when system working pressure and temperature vary widely,
Accurate control can be realized, can be with flexible modulation oil cylinder speed in staying seam to act in oil cylinder.Finally can be with to the position of oil cylinder
It is precisely controlled, product error is strict controlled within ± 0.2mm.Compared with use ratio valve controls, operation is simpler, into
Originally substantially reduce.Because requirement of the flow control valve 22 to fluid is much lower relative to proportional control valve, so seldom because of fluid
Fine impurity breaks down.
As shown in Figure 1 and Figure 2, this hydraulic control system includes fuel tank 1, hydraulic pump 4, electromagnetic relief valve 10, electromagnetic relief valve
7, different valve 14, electro-hydraulic reversing valve 13, solenoid directional control valve 24, Solenoid ball valve 21, oil-feed flow speed control valve 22 is employed, and pass through balance
Valve 25 realizes being accurately positioned for the plastic molding presses such as EPS, and error is within ± 0.2mm, should on the plastic molding presses such as EPS
Scheme is to use first.
Originally stay seam loop hydraulic system that by staying seam circuit electromagnetic reversal valve 24 to shunt, part oil return can both be realized into height
Speed is retracted, while avoids heating, effectively reduces energy consumption.The program is to be used first on the plastic molding presses such as EPS.
Originally seam loop hydraulic system is stayed, for big flow, high-pressure hydraulic, it is necessary to accurately control in certain a trip
The gait of march of liquefaction cylinder, oil-feed flow speed control valve 22 and overbalance valve 25 are coordinated, both can be independently complete in whole hydraulic system
Into being precisely controlled for oil cylinder speed, other big flow high speed backhauls can also be coordinated to act, to get a desired effect.
Claims (2)
1. a kind of EPS automatic moulding machines hydraulic control system, it is characterised in that described hydraulic control system includes fuel tank（1）,
Hydraulic pump（4）, electromagnetic relief valve（10）, electromagnetic relief valve（7）, different valve（14）, electro-hydraulic reversing valve（13）, solenoid directional control valve
（24）, Solenoid ball valve（21）, employ oil-feed flow speed control valve（22）, and pass through balanced valve（25）To realize moulded plastic forming machine
It is accurately positioned, wherein hydraulic pump（4）Import and oil absorption filter（3）It is connected, passes through pump block shaft coupling（5）With motor（6）Phase
Even, hydraulic pump（4）Small pump discharge and check valve（8）And electromagnetic relief valve（7）It is connected, hydraulic pump（4）Big pump discharge and
Check valve（9）, electromagnetic relief valve（10）It is connected, two electromagnetic relief valves（7）And electromagnetic relief valve（10）Outlet and cooler
（20）It is connected, cooler（20）Oil return box；Two check valves（8）And check valve（9）Outlet simultaneously connect electro-hydraulic reversing valve（13）
Import P, and Solenoid ball valve（21）Import and flow speed control valve（22）Import, Solenoid ball valve（21）And flow speed control valve（22）Go out
Mouth and solenoid directional control valve（24）Import P be connected, solenoid directional control valve（24）And electro-hydraulic reversing valve（13）Oil return inlet T also access it is cold
But device and oil return box；Solenoid directional control valve（24）Working hole A and balanced valve（25）It is connected, balanced valve（25）With electro-hydraulic reversing valve
（13）Working hole B be connected, solenoid directional control valve（24）Working hole B and electro-hydraulic reversing valve（13）Working hole A be connected, it is electro-hydraulic to change
To valve（13）Working hole A be connected by hydraulic control one-way valve 15.1 with the rodless cavity of oil cylinder, electro-hydraulic reversing valve（13）Working hole B
With electro-hydraulic reversing valve（14）Oil return inlet T be connected, electro-hydraulic reversing valve（14）Import P and electro-hydraulic reversing valve（13）Working hole A
It is connected, electro-hydraulic reversing valve（14）Working hole B pass through hydraulic control one-way valve 15.2 connect oil cylinder rod chamber.
A kind of 2. EPS automatic moulding machines hydraulic control system as claimed in claim 1, it is characterised in that the check valve（8）、
Check valve（9）Outlet connect pressure meter switch（11）, pressure gauge（12）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711012625.XA CN107639782A (en) | 2017-10-26 | 2017-10-26 | EPS automatic moulding machine hydraulic control systems |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711012625.XA CN107639782A (en) | 2017-10-26 | 2017-10-26 | EPS automatic moulding machine hydraulic control systems |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107639782A true CN107639782A (en) | 2018-01-30 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711012625.XA Pending CN107639782A (en) | 2017-10-26 | 2017-10-26 | EPS automatic moulding machine hydraulic control systems |
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| CN (1) | CN107639782A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108313235A (en) * | 2018-03-21 | 2018-07-24 | 无锡德林防务装备股份有限公司 | The integrated power unit of hydraulic sliding type watertight door |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1560482A (en) * | 2004-03-12 | 2005-01-05 | 浙江大学 | Shield tunneling machine hydraulic propulsion system using proportional flow pressure compound control |
| JP4192206B1 (en) * | 2008-04-15 | 2008-12-10 | 株式会社関東メカニカル | Environmentally friendly hydraulic press |
| CN103452963A (en) * | 2013-09-02 | 2013-12-18 | 怀宁县辉煌家居厂 | Hydraulic system of automatic foamed plastic forming machine |
| CN103448293A (en) * | 2013-03-09 | 2013-12-18 | 赣州虔东稀土集团股份有限公司 | Powder press hydraulic system |
| US20150330271A1 (en) * | 2012-12-21 | 2015-11-19 | Pierburg Gmbh | Valve device for a hydraulic circuit and oil pump regulating arrangement |
| CN205592207U (en) * | 2016-04-14 | 2016-09-21 | 中山市富邦机械有限公司 | Servo-hydraulic system of double-station plastic blow molding equipment |
| CN207630390U (en) * | 2017-10-26 | 2018-07-20 | 杭州方圆塑机股份有限公司 | EPS automatic moulding machine hydraulic control systems |
-
2017
- 2017-10-26 CN CN201711012625.XA patent/CN107639782A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1560482A (en) * | 2004-03-12 | 2005-01-05 | 浙江大学 | Shield tunneling machine hydraulic propulsion system using proportional flow pressure compound control |
| JP4192206B1 (en) * | 2008-04-15 | 2008-12-10 | 株式会社関東メカニカル | Environmentally friendly hydraulic press |
| US20150330271A1 (en) * | 2012-12-21 | 2015-11-19 | Pierburg Gmbh | Valve device for a hydraulic circuit and oil pump regulating arrangement |
| CN103448293A (en) * | 2013-03-09 | 2013-12-18 | 赣州虔东稀土集团股份有限公司 | Powder press hydraulic system |
| CN103452963A (en) * | 2013-09-02 | 2013-12-18 | 怀宁县辉煌家居厂 | Hydraulic system of automatic foamed plastic forming machine |
| CN205592207U (en) * | 2016-04-14 | 2016-09-21 | 中山市富邦机械有限公司 | Servo-hydraulic system of double-station plastic blow molding equipment |
| CN207630390U (en) * | 2017-10-26 | 2018-07-20 | 杭州方圆塑机股份有限公司 | EPS automatic moulding machine hydraulic control systems |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108313235A (en) * | 2018-03-21 | 2018-07-24 | 无锡德林防务装备股份有限公司 | The integrated power unit of hydraulic sliding type watertight door |
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Application publication date: 20180130 |