CN208885661U - A kind of powder press upper and lower mould cylinder hydraulic circuit - Google Patents
A kind of powder press upper and lower mould cylinder hydraulic circuit Download PDFInfo
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- CN208885661U CN208885661U CN201821403290.4U CN201821403290U CN208885661U CN 208885661 U CN208885661 U CN 208885661U CN 201821403290 U CN201821403290 U CN 201821403290U CN 208885661 U CN208885661 U CN 208885661U
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Abstract
The utility model relates to a kind of powder press upper and lower mould cylinder hydraulic circuits, including valve block, lower mold oil cylinder, upper mould oil cylinder, low pressure, input end and high voltage input terminal；The first electromagnetic relief valve, the second electromagnetic relief valve, two logical inserting overflow valves and thread cartridge overflow valve are provided in the valve block；The low pressure, input end is connect by plate-type non-return valve with the second electromagnetic relief valve, the first electro-hydraulic reversing valve and the second electro-hydraulic reversing valve, first electromagnetic relief valve and the second electromagnetic relief valve are connect with the first electro-hydraulic reversing valve and the second electro-hydraulic reversing valve respectively, first electro-hydraulic reversing valve passes through superposition hydraulic control one-way valve respectively and the both ends of upper mould oil cylinder connect, and described two logical inserting overflow valves are connect by inserting formula Solenoid ball valve with thread cartridge overflow valve.The utility model can realize boost in pressure using low-lift pump, accelerate boost in pressure speed；And pressure holding effect is good, leakage rate is small, and can reduce high-pressure pump uses the time, reduces energy consumption.
Description
Technical field
The utility model relates to a kind of hydraulic circuits, and in particular to a kind of powder press upper and lower mould cylinder hydraulic circuit.
Background technique
Powder press is also referred to as powder hydraulic press or powder compaction pressures machine, for powdered material to be press-formed.
Original powder press circuit, pressure maintaining de-molding position use the overflow valve of sliding valve structure to do back pressure, are added in master
In oil circuit, make to be promoted to have always to be pressed；At this time if wanting adherence pressure, can only be promoted with high-pressure pump by high voltage input terminal fuel feeding
Pressure, the speed that will lead to boost in pressure are slow.
Another prior art is to add by-passing valve on working connection, because the overflow valve leakage rate of sliding valve structure is big, pressure maintaining effect
Fruit is bad, during product needs to suppress again, can continue to be pressurizeed with high-pressure pump, leads to that energy consumption is high, and calorific value is big.
Utility model content
The purpose of this utility model is: providing a kind of powder press upper and lower mould cylinder hydraulic circuit, overcomes drawbacks described above.
To achieve the goals above, the utility model provides the following technical solution:
A kind of powder press upper and lower mould cylinder hydraulic circuit, including valve block, lower mold oil cylinder, upper mould oil cylinder, low pressure, input end
And high voltage input terminal；Be provided in the valve block the first electromagnetic relief valve, the second electromagnetic relief valve, two logical inserting overflow valves and
Thread cartridge overflow valve；The low pressure, input end is connect with the first electromagnetic relief valve, and the low pressure, input end passes through board-like unidirectional
Valve is connect with the second electromagnetic relief valve, the first electro-hydraulic reversing valve and the second electro-hydraulic reversing valve, and the high voltage input terminal passes through pipe
Formula check valve is connect with the second electromagnetic relief valve, the first electro-hydraulic reversing valve and the second electro-hydraulic reversing valve, and first electromagnetism overflows
Stream valve and the second electromagnetic relief valve are connect with the first electro-hydraulic reversing valve and the second electro-hydraulic reversing valve respectively, and described first electro-hydraulic changes
The both ends for passing through superposition hydraulic control one-way valve and upper mould oil cylinder respectively to valve connect, and described two logical inserting overflow valves are by inserting formula electromagnetism
Ball valve is connect with thread cartridge overflow valve, second electro-hydraulic reversing valve by stacked unidirectional throttle valve respectively with lower mold oil cylinder
Both ends connection.
Further, further include oil revolving end, the oil revolving end respectively with the first electromagnetic relief valve, the second electromagnetic relief valve,
First electro-hydraulic reversing valve and the connection of the second electro-hydraulic reversing valve.
Further, the plate-type non-return valve and the second electromagnetic relief valve and the first electro-hydraulic reversing valve and the second electro-hydraulic commutation
The first pressure measuring tie-in is provided between valve；It is arranged between the low pressure, input end, the first electromagnetic relief valve and plate-type non-return valve
There is the second pressure measuring tie-in.
Further, first pressure measuring tie-in and the second pressure measuring tie-in are respectively positioned on the side of valve block.
Further, first electro-hydraulic reversing valve and the second electro-hydraulic reversing valve are three position four-way electromagnetic valve.
Further, first electromagnetic relief valve, superposition hydraulic control one-way valve and stacked unidirectional throttle valve are respectively provided with
In the top end face of valve block；First electro-hydraulic reversing valve is located at the top of superposition hydraulic control one-way valve, second electro-hydraulic reversing valve
Positioned at the top of stacked unidirectional throttle valve.
Further, second electromagnetic relief valve, two logical inserting overflow valves, slotting formula Solenoid ball valve and thread cartridge overflow
Stream valve is respectively positioned on the side of valve block.
The utility model has the following beneficial effects: a kind of powder press upper and lower mould cylinder hydraulic circuit, is overflow by the first electromagnetism
It flows valve, the second electromagnetic relief valve, the first electro-hydraulic reversing valve, two logical inserting overflow valves, insert formula Solenoid ball valve, thread cartridge overflow valve
And stacked unidirectional throttle valve is used cooperatively, can have in working connection in the case where certain pressure passed through using low-lift pump it is low
It presses input terminal to realize boost in pressure, the speed of boost in pressure can be accelerated, improve production efficiency；And two logical inserting overflow valves
Pressure holding effect is good, leakage rate is small, and part pressure process is realized by low-lift pump during repeating to suppress, and can reduce high pressure
Pump uses the time, advantageously reduces energy consumption, while reducing the calorific value of oil circuit.
Detailed description of the invention
Fig. 1 is a kind of overall structure diagram of powder press upper and lower mould cylinder hydraulic circuit of the utility model.
Fig. 2 is that a kind of overall structure at another visual angle of powder press upper and lower mould cylinder hydraulic circuit of the utility model is illustrated
Figure.
Fig. 3 is a kind of hydraulic circuit diagram of powder press upper and lower mould cylinder hydraulic circuit of the utility model.
In figure: 1, valve block；2, the first electromagnetic relief valve；3, plate-type non-return valve；4, tubular type check valve；5, the second electromagnetism overflow
Valve；6, the first pressure measuring tie-in；7, the second pressure measuring tie-in；8, the first electro-hydraulic reversing valve；9, it is superimposed hydraulic control one-way valve；10, two is logical slotting
Fill overflow valve；11, formula Solenoid ball valve is inserted；12, thread cartridge overflow valve；13, the second electro-hydraulic reversing valve；14, superposing type unidirectionally saves
Flow valve；15, lower mold oil cylinder；16, upper mould oil cylinder.
Specific embodiment
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation
Example, the utility model is described in further detail.It should be appreciated that specific embodiment described herein is only to explain this
Utility model is not used to limit the utility model.
With reference to Fig. 1, Fig. 2 and Fig. 3, a kind of powder press upper and lower mould cylinder hydraulic circuit, including valve block 1, lower mold oil cylinder
15, upper mould oil cylinder 16, low pressure, input end and high voltage input terminal；First the 2, second electricity of electromagnetic relief valve is provided in the valve block 1
The logical inserting overflow valve 10 of magnetic overflow valve 5, two and thread cartridge overflow valve 12；The low pressure, input end and the first electromagnetic relief valve
2 connections, the low pressure, input end pass through plate-type non-return valve 3 and the second electromagnetic relief valve 5, the first electro-hydraulic reversing valve 8 and second
Electro-hydraulic reversing valve 13 connects, and the high voltage input terminal passes through tubular type check valve 4 and the second electromagnetic relief valve 5, the first electro-hydraulic commutation
Valve 8 and the connection of the second electro-hydraulic reversing valve 13, first electromagnetic relief valve 2 and the second electromagnetic relief valve 5 are respectively with first
Electro-hydraulic reversing valve 8 and the connection of the second electro-hydraulic reversing valve 13, first electro-hydraulic reversing valve 8 pass through superposition hydraulic control one-way valve 9 respectively
It is connect with the both ends of upper mould oil cylinder 16, described two logical inserting overflow valves 10 are by inserting formula Solenoid ball valve 11 and thread cartridge overflow
Valve 12 connects, and second electro-hydraulic reversing valve 13 is connected with the both ends of lower mold oil cylinder 15 respectively by stacked unidirectional throttle valve 14
It connects.
The lower mold oil cylinder 15 is used for the demoulding blanking of product；The upper mould oil cylinder 16 is used for compacted products.
It further include oil revolving end, the oil revolving end is electro-hydraulic with the first electromagnetic relief valve 2, the second electromagnetic relief valve 5, first respectively
Reversal valve 8 and the connection of the second electro-hydraulic reversing valve 13.
The plate-type non-return valve 3 and the second electromagnetic relief valve 5 and the first electro-hydraulic reversing valve 8 and the second electro-hydraulic reversing valve 13
Between be provided with the first pressure measuring tie-in 6；It is arranged between the low pressure, input end, the first electromagnetic relief valve 2 and plate-type non-return valve 3
There is the second pressure measuring tie-in 7.
First pressure measuring tie-in 6 and the second pressure measuring tie-in 7 are respectively positioned on the side of valve block 1.
First electro-hydraulic reversing valve 8 and the second electro-hydraulic reversing valve 13 are three position four-way electromagnetic valve, are respectively used to change
The direction of the hydraulic oil of upper mould oil cylinder 16 and lower mold oil cylinder 15 is transferred to, and then realizes the piston of upper mould oil cylinder 16 and lower mold oil cylinder 15
Bar stretches.
First electromagnetic relief valve 2, superposition hydraulic control one-way valve 9 and stacked unidirectional throttle valve 14 are arranged at valve block
1 top end face；First electro-hydraulic reversing valve 8 is located at the top of superposition hydraulic control one-way valve 9, second electro-hydraulic reversing valve 13
In the top of stacked unidirectional throttle valve 14.
The logical inserting overflow valve 10 of second electromagnetic relief valve 5, two inserts formula Solenoid ball valve 11 and thread cartridge overflow valve
12 are respectively positioned on the side of valve block 1.
The superposition hydraulic control one-way valve 9 avoids the piston rod of upper mould oil cylinder 16 from existing for realizing the pressure maintaining of upper mould oil cylinder 16
It is mobile when pressure maintaining.
Described two logical inserting overflow valves 10 are used for pressure maintaining, and restricted driving sealing effect is preferable, and leakage prevention capability is strong.
The working principle of the utility model are as follows: when needing to mold, big oil pump and small oil pump are worked at the same time, and pass through high pressure respectively
Input terminal (PH) and low pressure, input end (PL) pressurize to working connection fuel feeding, at this time the first electromagnetic relief valve 2, the second electromagnetic relief valve
5 and first electro-hydraulic reversing valve 8 left side electric control part simultaneously it is electric, input hydraulic oil from high voltage input terminal and low pressure respectively
End respectively by plate-type non-return valve 3, tubular type check valve 4, the first electromagnetic relief valve 2, the second electromagnetic relief valve 5, first is electro-hydraulic changes
To valve 5 and the second electro-hydraulic reversing valve 13 to 16 fuel feeding of lower mold oil cylinder 15 and upper mould oil cylinder, make lower mold oil cylinder 15 and upper mould oil cylinder 16
Piston rod movement, realize the compacting of powdery product, then big 2 power loss of oil pump and the first electromagnetic relief valve, small oil pump continue
It is pressurizeed by low pressure, input end, until setting pressure, makes product complete compression moulding, two logical inserting overflow valves 10, which are realized, at this time is protected
Pressure, all valve power loss；When die sinking, the first electromagnetic relief valve 2, the second electromagnetic relief valve 5 and the second electro-hydraulic reversing valve 13
Left side electric control part obtain electric, 16 counteragent of lower mold oil cylinder 15 and upper mould oil cylinder, realize separation, product can be taken out at this time,
Realize demoulding.
The utility model is not confined to these for being further described to the utility model by above-described embodiment
Specific embodiment.Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention etc.,
It is interpreted as being within the protection scope of the utility model.
Claims (7)
1. a kind of powder press upper and lower mould cylinder hydraulic circuit, including it is valve block (1), lower mold oil cylinder (15), upper mould oil cylinder (16), low
Press input terminal and high voltage input terminal；It is characterized by: being provided with the first electromagnetic relief valve (2), the second electromagnetism on the valve block (1)
Overflow valve (5), two logical insertings overflow valve (10) and thread cartridge overflow valve (12)；The low pressure, input end and the first electromagnetism overflow
Valve (2) connection is flowed, the low pressure, input end passes through plate-type non-return valve (3) and the second electromagnetic relief valve (5), the first electro-hydraulic reversing valve
(8) and the second electro-hydraulic reversing valve (13) connection, the high voltage input terminal pass through tubular type check valve (4) and the second electromagnetic relief valve
(5), the first electro-hydraulic reversing valve (8) and the second electro-hydraulic reversing valve (13) connection, first electromagnetic relief valve (2) and the second electricity
Magnetic overflow valve (5) is connect with the first electro-hydraulic reversing valve (8) and the second electro-hydraulic reversing valve (13) respectively, the first electro-hydraulic commutation
Valve (8) is connect by being superimposed hydraulic control one-way valve (9) with the both ends of upper mould oil cylinder (16) respectively, described two logical insertings overflow valve (10)
It is connect by inserting formula Solenoid ball valve (11) with thread cartridge overflow valve (12), second electro-hydraulic reversing valve (13) passes through superposing type
One-way throttle valve (14) is connect with the both ends of lower mold oil cylinder (15) respectively.
2. a kind of powder press upper and lower mould cylinder hydraulic circuit according to claim 1, it is characterised in that: further include oil return
End, the oil revolving end respectively with the first electromagnetic relief valve (2), the second electromagnetic relief valve (5), the first electro-hydraulic reversing valve (8) and
Second electro-hydraulic reversing valve (13) connection.
3. a kind of powder press upper and lower mould cylinder hydraulic circuit according to claim 1, it is characterised in that: the board-like list
To being provided between valve (3) and the second electromagnetic relief valve (5) and the first electro-hydraulic reversing valve (8) and the second electro-hydraulic reversing valve (13)
One pressure measuring tie-in (6)；Second is provided between the low pressure, input end, the first electromagnetic relief valve (2) and plate-type non-return valve (3)
Pressure measuring tie-in (7).
4. a kind of powder press upper and lower mould cylinder hydraulic circuit according to claim 3, it is characterised in that: described first surveys
Crimp head (6) and the second pressure measuring tie-in (7) are respectively positioned on the side of valve block (1).
5. a kind of powder press upper and lower mould cylinder hydraulic circuit according to claim 1, it is characterised in that: first electricity
Liquid reversal valve (8) and the second electro-hydraulic reversing valve (13) are three position four-way electromagnetic valve.
6. a kind of powder press upper and lower mould cylinder hydraulic circuit according to claim 1, it is characterised in that: first electricity
Magnetic overflow valve (2), superposition hydraulic control one-way valve (9) and stacked unidirectional throttle valve (14) are arranged at the top end face of valve block (1)；
First electro-hydraulic reversing valve (8) is located at the top of superposition hydraulic control one-way valve (9), and second electro-hydraulic reversing valve (13) is located at folded
Add the top of formula one-way throttle valve (14).
7. a kind of powder press upper and lower mould cylinder hydraulic circuit according to claim 1, it is characterised in that: second electricity
Magnetic overflow valve (5), two logical insertings overflow valve (10), slotting formula Solenoid ball valve (11) and thread cartridge overflow valve (12) are respectively positioned on valve
The side of block (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821403290.4U CN208885661U (en) | 2018-08-29 | 2018-08-29 | A kind of powder press upper and lower mould cylinder hydraulic circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821403290.4U CN208885661U (en) | 2018-08-29 | 2018-08-29 | A kind of powder press upper and lower mould cylinder hydraulic circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208885661U true CN208885661U (en) | 2019-05-21 |
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ID=66510436
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821403290.4U Active CN208885661U (en) | 2018-08-29 | 2018-08-29 | A kind of powder press upper and lower mould cylinder hydraulic circuit |
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| Country | Link |
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| CN (1) | CN208885661U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110587401A (en) * | 2019-07-31 | 2019-12-20 | 洛阳双瑞精铸钛业有限公司 | Grinding head pressing device for titanium plate grinding machine |
| CN113306194A (en) * | 2021-04-23 | 2021-08-27 | 天津中德应用技术大学 | Energy-saving efficient low-noise hydraulic system of press machine |
-
2018
- 2018-08-29 CN CN201821403290.4U patent/CN208885661U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110587401A (en) * | 2019-07-31 | 2019-12-20 | 洛阳双瑞精铸钛业有限公司 | Grinding head pressing device for titanium plate grinding machine |
| CN113306194A (en) * | 2021-04-23 | 2021-08-27 | 天津中德应用技术大学 | Energy-saving efficient low-noise hydraulic system of press machine |
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