CN208106854U - A kind of hydraulic system of bending machine - Google Patents
A kind of hydraulic system of bending machine Download PDFInfo
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- CN208106854U CN208106854U CN201721794879.7U CN201721794879U CN208106854U CN 208106854 U CN208106854 U CN 208106854U CN 201721794879 U CN201721794879 U CN 201721794879U CN 208106854 U CN208106854 U CN 208106854U
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Abstract
The utility model relates to a kind of hydraulic systems of bending machine, including oil pump, three-position four-way electromagnetic directional valve, check valve throttle valve one, pressure switch, oil cylinder, fuel tank and prefill valve, it further include plug-in type solenoid directional control valve one, plug-in type solenoid directional control valve two, plug-in type overflow valve one, plug-in type overflow valve two and check valve throttle valve two, plug-in type solenoid directional control valve two is connected with the lower oil cavitie of oil cylinder, pipeline between oil cylinder and plug-in type solenoid directional control valve two is equipped with plug-in type overflow valve one, plug-in type overflow valve one is connected with fuel tank, plug-in type solenoid directional control valve one is in parallel with plug-in type overflow valve one after being connected in series with plug-in type overflow valve two.The utility model has the beneficial effects that：The pressure energy in rodless cavity body (upper oil cavitie) can be taken full advantage of, in addition, fuel feeding and oil return speed are fast in by the handoff procedure quickly to return.
Description
Technical field
The utility model relates to technical field of hydraulic pressure more particularly to a kind of hydraulic systems of bending machine.
Background technique
Bending machine is a kind of machine that bending can be carried out to thin plate, structure mainly include rack, sliding block, workbench,
Axis, oil cylinder and electromechanical stop fine tuning structure, upper die and lower die, workbench is turned round to be mounted on the rack with screw.By hydraulic when use
Driving, hydraulic cylinder band movable slider moves up and down, to realize the bending to thin plate between upper die and lower die.Due to using liquid
Pressure driving, so that oil cylinder has enough output pressures.Mold can be made various shapes, to meet the requirement of different workpieces, behaviour
It is also very easy on work.Bending machine is divided into manual bending machine, hydraulic bending press and numerical control bender, and manual bending machine is divided into machine again
Tool manual bending machine and electric and hand bending machine, hydraulic bending press can be divided into again by the method for synchronization turn round that axis is synchronous, machine liquid is synchronous and
Electro-hydraulic synchronization, hydraulic bending press can be divided into upper dynamic, lower-moving type by motion mode again.
Currently, the oil cylinder that the plate bending machine of existing fluid pressure type uses is two, transported up and down by two oil cylinders band movable slider
It is dynamic, to realize the bending to plate.In existing hydraulic system, when the cylinder rod of oil cylinder is transferred, rodless cavity body pressure energy is unrestrained
Take, in addition, existing hydraulic system oil return and delivery rate in by handoff procedure into, return of F.F., work is slow.
Utility model content
The technical problem to be solved by the utility model is to provide a kind of hydraulic systems of bending machine, above-mentioned existing to overcome
Deficiency in technology.
The technical solution that the utility model solves above-mentioned technical problem is as follows：A kind of hydraulic system of bending machine, including oil
Pump, three-position four-way electromagnetic directional valve, check valve throttle valve one, pressure switch, oil cylinder, fuel tank and prefill valve, oil pump and fuel tank
Be connected, the P pressure port of three-position four-way electromagnetic directional valve is connected with oil pump, the A working hole of three-position four-way electromagnetic directional valve with
Check valve throttle valve one is connected, and check valve throttle valve one is connected with the upper oil cavitie of oil cylinder, and pressure switch is arranged in oil cylinder
On pipeline between check valve throttle valve one, the pipeline between pressure switch and check valve throttle valve one is arranged in prefill valve
On, prefill valve is connected with fuel tank；It further include plug-in type solenoid directional control valve one, plug-in type solenoid directional control valve two, plug-in type overflow
Valve one, plug-in type overflow valve two and check valve throttle valve two, plug-in type solenoid directional control valve two are connected with the lower oil cavitie of oil cylinder, oil
Pipeline between cylinder and plug-in type solenoid directional control valve two is equipped with plug-in type overflow valve one, and plug-in type overflow valve one is connected with fuel tank
Logical, plug-in type solenoid directional control valve one is in parallel with plug-in type overflow valve one after being connected in series with plug-in type overflow valve two, check valve throttling
The both ends of valve two are connected with the B working hole of plug-in type solenoid directional control valve two and three-position four-way electromagnetic directional valve respectively, and three four
The T oil return opening of electric change valve is connected with fuel tank.
Further, the three-position four-way electromagnetic directional valve is the three-position four-way electromagnetic directional valve of H-type Median Function.
It further, further include filter, filter is arranged on the pipeline between oil pump and fuel tank.
The utility model has the beneficial effects that：When the cylinder rod decentralization of oil cylinder, the negative pressure generated using the upper oil cavitie of oil cylinder, energy
Oil is drawn into the upper oil cavitie of oil cylinder, while matching the fuel feeding of oil pump, so that sliding block realizes F.F., to take full advantage of nothing
Pressure energy in rod cavity body (upper oil cavitie), in addition, fuel feeding and oil return speed are fast in by handoff procedure into, return of F.F., work,
And there is no impacts.Sliding block return, when sliding block returns to top dead-centre (signal is issued by travel switch), YA2 power loss (i.e. three
Four-way electromagnetic reversing valve 2 changes to intermediate position), sliding block is parked in top dead-centre.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the hydraulic system of hydraulic bending press described in the utility model.
In attached drawing, parts list represented by the reference numerals are as follows：
1, oil pump, 2, three-position four-way electromagnetic directional valve, 3, check valve throttle valve one, 4, pressure switch, 5, oil cylinder, 6, oil
Case, 7, plug-in type solenoid directional control valve one, 8, plug-in type solenoid directional control valve two, 9, plug-in type overflow valve one, 10, plug-in type overflow valve
Two, 11, check valve throttle valve two, 12, prefill valve, 13, electromagnetic relief valve, 14, filter.
Specific embodiment
The principles of the present invention and feature are described below in conjunction with attached drawing, example is served only for explaining that this is practical
It is novel, it is not intended to limit the scope of the utility model.
As shown in Figure 1, a kind of hydraulic system of bending machine, including oil pump 1, three-position four-way electromagnetic directional valve 2, check valve section
Flow valve 1, pressure switch 4, oil cylinder 5, fuel tank 6, plug-in type solenoid directional control valve 1, plug-in type solenoid directional control valve 28, insertion
Formula overflow valve 1, plug-in type overflow valve 2 10 and check valve throttle valve 2 11, prefill valve 12, electromagnetic relief valve 13, filter 14
With two-position four-way solenoid directional control valve 2 15.
The liquid feeding end of filter 14 is connected with fuel tank 6, and the outlet end of filter 14 is connected with the liquid feeding end of oil pump 1,
The outlet end of oil pump 1 is connected with the P pressure port of three-position four-way electromagnetic directional valve 2, the A work of three-position four-way electromagnetic directional valve 2
Mouth is connected with a working hole of check valve throttle valve 1, another working hole and the oil cylinder 5 of check valve throttle valve 1
Upper oil cavitie is connected.Pressure switch 4 is arranged on the pipeline between oil cylinder 5 and check valve throttle valve 1.
One working hole of plug-in type solenoid directional control valve 28 is connected with the lower oil cavitie of oil cylinder 5, plug-in type solenoid directional control valve
28 another working hole is connected with a working hole of check valve throttle valve 2 11, check valve throttle valve 2 11 it is another
A working hole with another working hole be connected with the B working hole of three-position four-way electromagnetic directional valve 2.
One working hole of plug-in type overflow valve 1 is connected with the pipeline between oil cylinder 5 and plug-in type solenoid directional control valve 28
Logical, another working hole of plug-in type overflow valve 1 is connected with fuel tank 6, plug-in type solenoid directional control valve 1 and plug-in type overflow
Valve 2 10 is in parallel with plug-in type overflow valve 1 after being connected in series.
The T oil return opening of three-position four-way electromagnetic directional valve 2 is connected with fuel tank 6.The P pressure port and pressure relay of prefill valve 12
Pipeline between device 4 and check valve throttle valve 1 is connected, and the T oil return opening of prefill valve 12 is connected with fuel tank 6.
The P pressure port of electromagnetic relief valve 13 is connected with the pipeline between oil pump 1 and three-position four-way electromagnetic directional valve 2, electricity
The T oil return opening of magnetic overflow valve 13 is connected with fuel tank 6.
In the present embodiment, the model I PH-3B-10 of oil pump 1；The model of three-position four-way electromagnetic directional valve 2
4WE6Y-A/D24T；The model FR10-20 of check valve throttle valve 1；The model FR10-20 of check valve throttle valve 2 11；
The model SV10-20 of plug-in type solenoid directional control valve 1；The model SV10-20 of plug-in type solenoid directional control valve 28；Plug-in type
The model LRV10-20 of overflow valve 1；The model ZDB6VP2-4X/315 of electromagnetic relief valve 13；Plug-in type overflow valve 2 10
Model LRV10-20；The model PSK-400K-06I of pressure switch 4.
Network analysis：
When lathe F.F., electromagnet YA1, YA3, YA4 obtain electric, i.e., three-position four-way electromagnetic directional valve 2, plug-in type electromagnetism change
Must be electric to valve 28 and plug-in type solenoid directional control valve 1, since YA3 (plug-in type solenoid directional control valve 2 8) obtains electric, the lower oil of two oil cylinders 5
The oil of chamber is immediately returned to by plug-in type solenoid directional control valve 28, check valve throttle valve 2 11 and three-position four-way electromagnetic directional valve 2
Fuel tank 6, the at this time self weight of sliding block make the decrease speed of piston more than the delivery rate of oil pump 1, and the upper oil cavitie of oil cylinder 5 generates negative
Pressure, at this moment the hydraulic oil of fuel tank 6 sucks 5 upper oil cavitie of oil cylinder by prefill valve 12, and sliding block is formed F.F..
When sliding block reaches speed change point (signal is issued by travel switch), YA3 (plug-in type solenoid directional control valve 2 8) power loss,
Plug-in type solenoid directional control valve 28 is switched to the right operating position, and the oil of 5 lower oil cavitie of oil cylinder generates about through plug-in type overflow valve 2 10
The negative pressure of the back pressure of 80bar, 5 upper oil cavitie of oil cylinder disappears, and prefill valve 12 is voluntarily closed, at this point, the pressure oil of oil pump 1 passes through three
Four-way electromagnetic reversing valve 2, check valve throttle valve 1 enter 5 upper oil cavitie of oil cylinder, sliding block be formed work into.
When sliding block reaches bottom dead centre (signal is issued by pressure gauge), YA1 power loss, YA2 obtain that electric (i.e. 3-position 4-way electromagnetism changes
Change to the right operating position to valve 2), the pressure oil of oil pump 1 through three-position four-way electromagnetic directional valve 2, check valve throttle valve 2 11,
Plug-in type solenoid directional control valve 28 is to two oil cylinders, 5 lower oil cavitie fuel feeding, and the oil of 5 upper oil cavitie of oil cylinder is through 12 oil return box 6 of prefill valve, sliding block
Return, when sliding block returns to top dead-centre (signal is issued by travel switch), YA2 power loss (i.e. change to by three-position four-way electromagnetic directional valve 2
Intermediate position), sliding block is parked in top dead-centre.
Although the embodiments of the present invention have been shown and described above, it is to be understood that above-described embodiment is
Illustratively, it should not be understood as limiting the present invention, those skilled in the art are in the scope of the utility model
Inside it can make changes, modifications, alterations, and variations to the above described embodiments.
Claims (2)
1. a kind of hydraulic system of bending machine, which is characterized in that including oil pump (1), three-position four-way electromagnetic directional valve (2), unidirectional
Valve throttle valve one (3), pressure switch (4), oil cylinder (5), fuel tank (6) and prefill valve (12), the oil pump (1) and the fuel tank
(6) it is connected, the P pressure port of the three-position four-way electromagnetic directional valve (2) is connected with the oil pump (1), the 3-position 4-way
The A working hole of solenoid directional control valve (2) is connected with the check valve throttle valve one (3), the check valve throttle valve one (3) and institute
The upper oil cavitie for stating oil cylinder (5) is connected, and the pressure switch (4) is arranged in the oil cylinder (5) and the check valve throttle valve
On pipeline between one (3), the prefill valve (12) is arranged in the pressure switch (4) and the check valve throttle valve one
(3) on the pipeline between, the prefill valve (12) is connected with the fuel tank (6)；It further include plug-in type solenoid directional control valve one
(7), plug-in type solenoid directional control valve two (8), plug-in type overflow valve one (9), plug-in type overflow valve two (10) and check valve throttle valve
Two (11), the plug-in type solenoid directional control valve two (8) are connected with the lower oil cavitie of the oil cylinder (5), the oil cylinder (5) with it is described
Pipeline between plug-in type solenoid directional control valve two (8) is equipped with the plug-in type overflow valve one (9), the plug-in type overflow valve one
(9) it is connected with the fuel tank (6), the plug-in type solenoid directional control valve one (7) is mutually gone here and there with the plug-in type overflow valve two (10)
It is in parallel with the plug-in type overflow valve one (9) after connection, the both ends of the check valve throttle valve two (11) respectively with the plug-in type
Solenoid directional control valve two (8) is connected with the B working hole of the three-position four-way electromagnetic directional valve (2), and the 3-position 4-way electromagnetism changes
It is connected to the T oil return opening of valve (2) with the fuel tank (6)；The three-position four-way electromagnetic directional valve (2) is H-type Median Function
Three-position four-way electromagnetic directional valve (2), the model 4WE6Y-A/D24T of the three-position four-way electromagnetic directional valve (2).
2. a kind of hydraulic system of bending machine according to claim 1, which is characterized in that further include filter (14), institute
It states on the pipeline that filter (14) are arranged between the oil pump (1) and the fuel tank (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721794879.7U CN208106854U (en) | 2017-12-20 | 2017-12-20 | A kind of hydraulic system of bending machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721794879.7U CN208106854U (en) | 2017-12-20 | 2017-12-20 | A kind of hydraulic system of bending machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208106854U true CN208106854U (en) | 2018-11-16 |
Family
ID=64130617
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721794879.7U Expired - Fee Related CN208106854U (en) | 2017-12-20 | 2017-12-20 | A kind of hydraulic system of bending machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208106854U (en) |
-
2017
- 2017-12-20 CN CN201721794879.7U patent/CN208106854U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181116 Termination date: 20211220 |