CN106345955A - Hydraulic overload protection system for opposite direction automatic forging press machine - Google Patents
Hydraulic overload protection system for opposite direction automatic forging press machine Download PDFInfo
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- CN106345955A CN106345955A CN201610874978.XA CN201610874978A CN106345955A CN 106345955 A CN106345955 A CN 106345955A CN 201610874978 A CN201610874978 A CN 201610874978A CN 106345955 A CN106345955 A CN 106345955A
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- Prior art keywords
- pipeline
- pressure
- valve
- gas
- normally closed
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J9/00—Forging presses
- B21J9/10—Drives for forging presses
- B21J9/20—Control devices specially adapted to forging presses not restricted to one of the preceding subgroups
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
Abstract
The invention relates to the technical field of opposite direction automatic forging press machines, in particular to a hydraulic overload protection system for an opposite direction automatic forging press machine. The hydraulic overload protection system comprises a pneumatic unloading valve, a pneumatic pump, a normally open two-position two-way solenoid valve, a normally closed two-position three-way solenoid valve and a pressure stabilizing device. The pneumatic pump is connected with the pneumatic unloading valve through a pipe, the pipe between the pneumatic pump and the pneumatic unloading valve is sequentially provided with an oil filter and a check valve, and the pneumatic unloading valve is connected with a hydraulic cushion through a pipe. According to the hydraulic overload protection system for the opposite direction automatic forging press machine, due to the adoption of a hydraulic overload protection device, the hydraulic overload protection system has the advantages of being high in protection precision and capable of automatically restoring an original protection function after the overload problem is solved.
Description
Technical field
The present invention relates to to hydraulic forging press technical field, more particularly, to a kind of to the hydraulic pressure to automatic press forging machine
Overload protective device.
Background technology
Flat-die forging is a kind of typical multi items, the forging and stamping production technology flat-die forging of small lot and produces skill in enormous quantities
Art is compared, and the productivity ratio of small batch forging is low, and automatization level is not also high.Wherein to being flat-die forging to hydraulic forging press
Common equipment, and the forcing press functional part that to be it important.In the course of the work, in order to prevent overload failure forcing press, reason
By on need using two class protection devices, that is, limit torque protection device and limit pressure protective device.And conventional damage type
The insurance precision of protection device is low, and needs to change damaged overload protection part and could recover its service behaviour, often
Have influence on the raising of work efficiency.
Therefore, in order to solve the above problems, it is badly in need of a kind of new protecting to the hydraulic pressure overload of automatic press forging machine of invention
Protecting system.
Content of the invention
It is an object of the invention to: provide a kind of highly effective strong protecting to the hydraulic pressure overload of automatic press forging machine
Protecting system.
The invention provides following proposal:
A kind of to the hydraulic pressure overload protective system of automatic press forging machine it is characterised in that: include pneumatic unloader, filter
Oily device, check valve, air driven pump, normally opened two-position two-way solenoid valve, normally closed two-position three way magnetic valve, stable-pressure device and control device,
Described air driven pump is connected with described pneumatic unloader by pipeline, on the pipeline between described air driven pump and described pneumatic unloader
It is sequentially provided with described oil filter and described check valve, described pneumatic unloader is connected by pipeline with hydraulic die cushion；
Described air driven pump is connected with source of the gas by pipeline, and the pipeline between described source of the gas and described air driven pump is sequentially provided with
Described normally closed two-position three way magnetic valve and described normally opened two-position two-way solenoid valve, described source of the gas, described normally closed two-position three-way electromagnetic
Valve, described stable-pressure device and described pneumatic unloader are sequentially connected by pipeline；Described source of the gas and described normally closed two-position three way electricity
Pipeline between magnet valve is provided with pressure regulator valve；Described pneumatic unloader is connected with pressure transducer by pipeline；
Described pressure transducer is electrically connected with described control device by electric wire, and described pneumatic unloader passes through electric wire and institute
State control device electrical connection.
Preferably, described pneumatic unloader is connected with oil sump tank by pipeline.
Preferably, described pneumatic unloader is connected with pressure gauge by pipeline.
Preferably, the pipeline between described pneumatic unloader and described pressure gauge is provided with pressure meter switch.
Preferably, described hydraulic die cushion is connected with manual air bleeding valve by pipeline.
Preferably, described hydraulic die cushion is connected with overload signal generator by pipeline.
Preferably, the pipeline between described source of the gas and described normally closed two-position three way magnetic valve is additionally provided with oil sprayer, described
Source of the gas, described oil sprayer, described pressure regulator valve and described normally closed two-position three way magnetic valve are sequentially connected by pipeline.
Preferably, the pipeline between described source of the gas and described normally closed two-position three way magnetic valve is additionally provided with air filter,
Described source of the gas, described air filter, described oil sprayer, described pressure regulator valve and described normally closed two-position three way magnetic valve pass through pipeline
It is sequentially connected.
Preferably, the pipeline between described source of the gas and described air filter is provided with gas source switch.
Preferably, described pressure regulator valve, normally opened two-position two-way solenoid valve, normally closed two-position three way magnetic valve, described pneumatic off-load
Valve, described pressure gauge, described pressure transducer and described overload signal generator are electrically connected with described control device respectively.
The beneficial effect that the present invention produces:
Disclosed in this invention to the hydraulic pressure overload protective system to automatic press forging machine, due to being transshipped using pneumatic type
Protection device, has the advantages that protection precision height, overload can recover original defencive function after solving automatically；Meanwhile, pass through
Setting stable-pressure device and pressure gauge, can read actual pressure value by pressure gauge, and protection pressure can be set to
Less than the advantage of nominal pressure, general adjustable pressure scope is range of regulation width between 30% to 150%, can be big-and-middle-sized
Extensively apply to on automatic press forging machine.
Brief description
Fig. 1 is the structured flowchart to the hydraulic pressure overload protective system to automatic press forging machine of the present invention.
Specific embodiment
Below in conjunction with accompanying drawing, technical scheme is clearly and completely described with the enforcement it is clear that described
Example is a part of embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, ordinary skill
The every other embodiment that personnel are obtained under the premise of not making creative work, broadly falls into the scope of protection of the invention.
In describing the invention, it should be noted that term " " center ", " on ", D score, "left", "right", " vertical ",
The orientation of instruction such as " level ", " interior ", " outward " or position relationship are based on orientation shown in the drawings or position relationship, merely to
Be easy to describe the present invention and simplify description, rather than instruction or the hint device of indication or element must have specific orientation,
With specific azimuth configuration and operation, therefore it is not considered as limiting the invention.Additionally, term " first ", " second ",
" the 3rd " is only used for describing purpose, and it is not intended that indicating or hint relative importance.
In describing the invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or is integrally connected；Can
To be to be mechanically connected or electrical connection；Can be to be joined directly together it is also possible to be indirectly connected to by intermediary, Ke Yishi
The connection of two element internals.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition
Concrete meaning in invention.
As shown in figure 1, a kind of to the hydraulic pressure overload protective system to automatic press forging machine, including pneumatic unloader 1, gas
Dynamic pump 2, check valve 3, oil filter 4, normally opened two-position two-way solenoid valve 14, normally closed two-position three way magnetic valve 12, stable-pressure device 16 and
Control device 19, described air driven pump is connected with described pneumatic unloader by pipeline 20, described air driven pump and described pneumatic off-load
Oil filter 4 and check valve 3 are sequentially provided with the pipeline between valve, described pneumatic unloader is connected by pipeline with hydraulic die cushion 17；
Described air driven pump is connected with source of the gas 18 by pipeline, the pipeline between described source of the gas and described air driven pump is sequentially provided with described normal
Close two-position three way magnetic valve and described normally opened two-position two-way solenoid valve, described source of the gas, described normally closed two-position three way magnetic valve, described
Stable-pressure device and described pneumatic unloader are sequentially connected by pipeline；Between described source of the gas and described normally closed two-position three way magnetic valve
Pipeline be provided with pressure regulator valve 10, described pneumatic unloader is connected with pressure transducer 15 by pipeline, described pressure transducer
Electrically connected with described control device by electric wire 21, described pneumatic unloader is electrically connected with described control device by electric wire 21；
Described pneumatic unloader is connected with pressure gauge 8 by pipeline, and the pipeline between described pneumatic unloader and described pressure gauge sets
There is pressure meter switch 5.Described hydraulic die cushion is passed through pipeline and is connected with manual air bleeding valve 11, breaks down for described pneumatic unloader
When off-load operation；Described hydraulic die cushion is connected with overload signal generator 13 by pipeline, for signal alarm when overloading.Described
Oil sprayer 9, described source of the gas, described oil sprayer, institute are additionally provided with the pipeline between source of the gas and described normally closed two-position three way magnetic valve
State pressure regulator valve and described normally closed two-position three way magnetic valve is sequentially connected by pipeline；Described source of the gas and described normally closed two-position three way electricity
Air filter 7, described source of the gas, described air filter, described oil sprayer, described pressure regulation are additionally provided with the pipeline between magnet valve
Valve and described normally closed two-position three way magnetic valve are sequentially connected by pipeline, the pipeline between described source of the gas and described air filter
It is provided with gas source switch 6.Described pressure regulator valve, normally opened two-position two-way solenoid valve, normally closed two-position three way magnetic valve, described pneumatic off-load
Valve, described pressure gauge, described pressure transducer and described overload signal generator are electrically connected with described control device respectively, in figure
Do not represent；Described pneumatic unloader is connected with oil sump tank by pipeline, and in figure is to represent, specifically refers to correlation technique data,
It is not repeated herein.
Pressure information that control device described in the present embodiment collects according to described pressure transducer and threshold pressure it
Between difference control described pneumatic unloader opening and closing；It is automatic that simultaneously described pneumatic unloader has threshold pressure in itself
The ability of off-load, by the off-load of dual fail-safe setting it is achieved that the overload protection of described forcing press.
To the hydraulic pressure overload protective system to automatic press forging machine described in the present embodiment, due to being transshipped using pneumatic type
Protection device, has the advantages that protection precision height, overload can recover original defencive function after solving automatically；Meanwhile, pass through
Setting stable-pressure device and pressure gauge, can read actual pressure value by pressure gauge, and protection pressure can be set to
Less than the advantage of nominal pressure, general adjustable pressure scope is range of regulation width between 30% to 150%, can be big-and-middle-sized
Extensively apply to on automatic press forging machine.
Forcing press described in the present embodiment can be arbitrary in one point press, two-point press or four point pressure machines,
No matter being single, double or four point pressure machines, all with a set of air driven pump and a set of unloader；Described air driven pump and described unloader are equal
By compressed-air control, by same gas source feed, air pressure size, by pressure regulation valve regulation, so can make protection pressure and precompressed
Power remains certain proportionate relationship.
Pneumatic unloader described in the present embodiment includes first chamber, second chamber, the 3rd chamber and oil return chamber.Described
First chamber is directly communicated with described hydraulic die cushion, and described oil return chamber is communicated with oil sump tank.In normal work, described first chamber
Room, described second chamber are all identical with described hydraulic die cushion oil pressure with the oil pressure of described 3rd chamber.When being overloaded due to certain, institute
The oil pressure stating hydraulic die cushion raises, and the thrust that first stage piston hydraulic die cushion oil pressure produces is more than the pressure that described first chamber air pressure produces
Power, first stage piston is opened, and causes the drop of pressure of described second chamber.So just promote second piston to open, cause described the
The drop of pressure of three chambers.The drop of pressure of described 3rd chamber, three-level piston is opened therewith.The high pressure of so described hydraulic die cushion
Oil is directly discharged to described oil return chamber through described first chamber, thus completing overload off-load action.Described pneumatic unloader
Be active in one's movements, during off-load from maximum pressure drop to zero time short, about 0.05 second, and the unloading of described pneumatic unloader
Lotus accuracy is high, and under conditions of nominal pressure, accuracy is 5.5% about.
Air driven pump described in the present embodiment to described hydraulic die cushion fuel feeding and maintains the characteristic of fuel delivery of constant precompression to be: works as institute
When the oil pressure stating hydraulic die cushion is equal to zero, delivery piston operating frequency is the fastest, and fuel delivery is most；With the rising of oil pressure, fuel delivery
Automatically reduce；After the stagnation pressure dynamic balance that the oil pressure of described air driven pump is produced with air pressure, described air driven pump automatic fuel cutoff.If
Hydraulic system has oil leak, then described air driven pump can be automatically replenished the oil mass of leakage loss, thus maintaining the oil pressure perseverance of described hydraulic system
Fixed.
Finally it is noted that various embodiments above, only in order to technical scheme to be described, is not intended to limit；To the greatest extent
Pipe has been described in detail to the present invention with reference to foregoing embodiments, it will be understood by those within the art that: its according to
So the technical scheme described in foregoing embodiments can be modified, or wherein some or all of technical characteristic is entered
Row equivalent；And these modifications or replacement, do not make the essence of appropriate technical solution depart from various embodiments of the present invention technology
The scope of scheme.
Claims (10)
1. a kind of to the hydraulic pressure overload protective system of automatic press forging machine it is characterised in that: include pneumatic unloader, oil strain
Device, check valve, air driven pump, normally opened two-position two-way solenoid valve, normally closed two-position three way magnetic valve, stable-pressure device and control device, institute
State air driven pump to be connected with described pneumatic unloader by pipeline, on the pipeline between described air driven pump and described pneumatic unloader according to
Secondary be provided with described oil filter and described check valve, described pneumatic unloader is connected by pipeline with hydraulic die cushion；
Described air driven pump is connected with source of the gas by pipeline, the pipeline between described source of the gas and described air driven pump is sequentially provided with described
Normally closed two-position three way magnetic valve and described normally opened two-position two-way solenoid valve, described source of the gas, described normally closed two-position three way magnetic valve, institute
State stable-pressure device and described pneumatic unloader is sequentially connected by pipeline；Described source of the gas and described normally closed two-position three way magnetic valve it
Between pipeline be provided with pressure regulator valve；Described pneumatic unloader is connected with pressure transducer by pipeline；
Described pressure transducer is electrically connected with described control device by electric wire, and described pneumatic unloader passes through electric wire and described control
Device electrical connection processed.
2. according to claim 1 to the hydraulic pressure overload protective system of automatic press forging machine it is characterised in that: described
Pneumatic unloader is connected with oil sump tank by pipeline.
3. according to claim 2 to the hydraulic pressure overload protective system of automatic press forging machine it is characterised in that: described
Pneumatic unloader is connected with pressure gauge by pipeline.
4. according to claim 3 to the hydraulic pressure overload protective system of automatic press forging machine it is characterised in that: described
Pipeline between pneumatic unloader and described pressure gauge is provided with pressure meter switch.
5. according to claim 4 to the hydraulic pressure overload protective system of automatic press forging machine it is characterised in that: described
Hydraulic die cushion is passed through pipeline and is connected with manual air bleeding valve.
6. according to claim 5 to the hydraulic pressure overload protective system of automatic press forging machine it is characterised in that: described
Hydraulic die cushion is connected with overload signal generator by pipeline.
7. according to claim 6 to the hydraulic pressure overload protective system of automatic press forging machine it is characterised in that: described
It is additionally provided with oil sprayer on pipeline between source of the gas and described normally closed two-position three way magnetic valve, described source of the gas, described oil sprayer, described
Pressure regulator valve and described normally closed two-position three way magnetic valve are sequentially connected by pipeline.
8. according to claim 7 to the hydraulic pressure overload protective system of automatic press forging machine it is characterised in that: described
It is additionally provided with air filter, described source of the gas, described air filter on pipeline between source of the gas and described normally closed two-position three way magnetic valve
Clear device, described oil sprayer, described pressure regulator valve and described normally closed two-position three way magnetic valve are sequentially connected by pipeline.
9. according to claim 8 to the hydraulic pressure overload protective system of automatic press forging machine it is characterised in that: described
Pipeline between source of the gas and described air filter is provided with gas source switch.
10. according to claim 9 to the hydraulic pressure overload protective system of automatic press forging machine it is characterised in that: institute
State pressure regulator valve, normally opened two-position two-way solenoid valve, normally closed two-position three way magnetic valve, described pneumatic unloader, described pressure gauge, described
Pressure transducer and described overload signal generator are electrically connected with described control device respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610874978.XA CN106345955A (en) | 2016-09-30 | 2016-09-30 | Hydraulic overload protection system for opposite direction automatic forging press machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610874978.XA CN106345955A (en) | 2016-09-30 | 2016-09-30 | Hydraulic overload protection system for opposite direction automatic forging press machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106345955A true CN106345955A (en) | 2017-01-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610874978.XA Pending CN106345955A (en) | 2016-09-30 | 2016-09-30 | Hydraulic overload protection system for opposite direction automatic forging press machine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110682591A (en) * | 2019-10-22 | 2020-01-14 | 沃得精机(中国)有限公司 | Overload protection control device for press machine |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101518808A (en) * | 2009-04-09 | 2009-09-02 | 高尔荣 | Overload protective device of punch |
| CN201432430Y (en) * | 2009-04-09 | 2010-03-31 | 高尔荣 | Overload protection device for punch press |
| CN202923014U (en) * | 2012-11-29 | 2013-05-08 | 一重集团大连设计研究院有限公司 | Hydraulic overload protection system capable of setting tonnages |
| CN205592201U (en) * | 2016-01-21 | 2016-09-21 | 杭震 | Hydraulic pressure overload protection device and possess device's mechanical press |
| CN206083722U (en) * | 2016-09-30 | 2017-04-12 | 安徽安簧机械股份有限公司 | Automatic forging press's of subtend hydraulic pressure overload protection system |
-
2016
- 2016-09-30 CN CN201610874978.XA patent/CN106345955A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101518808A (en) * | 2009-04-09 | 2009-09-02 | 高尔荣 | Overload protective device of punch |
| CN201432430Y (en) * | 2009-04-09 | 2010-03-31 | 高尔荣 | Overload protection device for punch press |
| CN202923014U (en) * | 2012-11-29 | 2013-05-08 | 一重集团大连设计研究院有限公司 | Hydraulic overload protection system capable of setting tonnages |
| CN205592201U (en) * | 2016-01-21 | 2016-09-21 | 杭震 | Hydraulic pressure overload protection device and possess device's mechanical press |
| CN206083722U (en) * | 2016-09-30 | 2017-04-12 | 安徽安簧机械股份有限公司 | Automatic forging press's of subtend hydraulic pressure overload protection system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110682591A (en) * | 2019-10-22 | 2020-01-14 | 沃得精机(中国)有限公司 | Overload protection control device for press machine |
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Application publication date: 20170125 |