CN105619875B - High-speed hydraulic punching machine - Google Patents
High-speed hydraulic punching machine Download PDFInfo
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- CN105619875B CN105619875B CN201610152207.XA CN201610152207A CN105619875B CN 105619875 B CN105619875 B CN 105619875B CN 201610152207 A CN201610152207 A CN 201610152207A CN 105619875 B CN105619875 B CN 105619875B
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- electromagnetic relief
- oil pump
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
- B30B15/16—Control arrangements for fluid-driven presses
- B30B15/166—Electrical control arrangements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
- B30B15/16—Control arrangements for fluid-driven presses
- B30B15/22—Control arrangements for fluid-driven presses controlling the degree of pressure applied by the ram during the pressing stroke
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
- B30B15/28—Arrangements for preventing distortion of, or damage to, presses or parts thereof
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Press Drives And Press Lines (AREA)
- Control Of Presses (AREA)
Abstract
A high-speed hydraulic punching machine comprises a machine bed and a sliding block and is characterized in that one end of an electronic ruler is fixed to the machine bed, the other end of the electronic ruler is connected to the sliding block, the sliding block is connected to a piston of a hydraulic cylinder and drives the piston to move downwards under the gravity effect, oil is directly sucked into a working chamber from an oil tank through the gravity, when the sliding block moves downwards to the set position, the electronic ruler drives a control system to enable double oil pumps to fast supply oil to the working chamber of the hydraulic cylinder simultaneously for driving the piston to drive the sliding block to fast move downwards for realizing high-speed punching, when the sliding block moves downwards to the lower limit position, the electronic ruler drives the control system again to enable one oil pump to stop supplying the oil, and the other oil pump and an energy accumulator fast supply oil to an oil return chamber of the hydraulic cylinder for enabling the piston to fast return to another cycle. The high-speed hydraulic punching machine has the advantages of being stable, safe, mute, friendly to environment, practical, wide in application range, easy and convenient to operate, easy to control and compact in structure, saving the energy and reducing emission, and work-pieces are attractive.
Description
Technical field
The present invention relates to a kind of plant equipment, especially a kind of pressing equipment, specifically one kind can high speed stampings
And the multifunctional high speed hydraulic press of energy low-speed tensile.
Background technology
At present, punch press is rotary machinery structure mostly, and its noise is big, safety coefficient is low, and complex structure is fragile, and
Single function, can only carry out punching press, and as by structure influence, the drawing velocity of large-tonnage punch press is limited, and high velocity ram machine is rushed
Pressure energy power is again limited.Hydraulic system has noise little, stable working, the big advantage of simple structure, tonnage, but due to by hydraulic pressure system
System design is limited, and the speed of existing hydraulic press cannot be improved, more than ten, 20 times generally per minute, inefficient, because
This, designs a kind of large-tonnage（More than 100 tons）High-speed hydraulic punching machine makes it the high speed stamping for realizing more than 60 times per minute, together
When can realize low-speed tensile again, realize a tractor serves several purposes, be hydraulic press upgrading key.
The content of the invention
The purpose of the present invention is, the problem of single function low for existing hydraulic press speed, and design one kind can be realized
More than 60 times per minute, while and the high-speed hydraulic punching machine of low-speed tensile can be realized.
The technical scheme is that：
A kind of high-speed hydraulic punching machine, it includes lathe bed and slide block, it is characterized in that one end of electronic ruler is fixed on lathe bed, separately
One end is connected with slide block, and slide block is connected with hydraulic cylinder piston, and slide block drives descent of piston direct using gravity under gravity
From fuel tank, to working chamber, when slide block down is to setting position, electronic ruler driving control system makes double oil pumps while to liquid for oil suction
The quick fuel feeding of cylinder pressure working chamber drives piston driving slide block fast downlink to realize high speed stamping, when slide block down is to lower position,
Driving control system makes an oil pump fuel cut-off to electronic ruler again, makes another oil pump and accumulator fast to hydraulic cylinder oil back chamber
Fast fuel feeding is so that piston quickly backs into another circulation.
Described hydraulic cylinder is controlled by hydraulic system, and hydraulic system includes the first oil pump 1, the second oil pump 2 and accumulator 3,
The outfan of the first oil pump 1 is directly connected with the working chamber of hydraulic cylinder 4 by pipeline, on the output pipe of the first oil pump 1
First electromagnetic relief valve YV1 is installed, the working chamber of hydraulic cylinder 4 is also by being provided with the pipeline and fuel tank phase of controllable check valve 5
Connection；Controllable check valve is controlled by the 3rd electromagnetic relief valve YV3, and the 3rd electromagnetic relief valve YV3 and accumulator 3 are connected in parallel on second
On the output pipe of oil pump 2, the second electromagnetic relief valve YV2 is also equipped with the output pipe of the second oil pump and the 5th electromagnetism overflows
Stream valve YV5；When 5th electromagnetic relief valve YV5 obtains electric, the second oil pump 2 is quick oil-filled to the working chamber of hydraulic cylinder 4, then makes during dead electricity
Hydraulic oil in the working chamber quickly returns fuel tank 6；The oil back chamber of hydraulic cylinder 4 passes through pipeline and the 3rd electromagnetic relief valve YV3
It is connected so that the pressure oil in accumulator 3 and the second oil pump 2 rapidly enters oil back chamber so that piston is quickly returned；In connection
Also at least be installed in parallel a 4th electromagnetic relief valve YV4 on the pipeline of oil back chamber, the 4th electromagnetic relief valve YV4 obtain it is electric after,
Oil in oil back chamber directly flows back to fuel tank 6.
The adjustable electromagnetic overflow valve of a regulation oil return speed is installed in parallel on the pipeline of described connection oil back chamber also
YV6。
Material returned cylinder 7 is parallel with also on the output pipe of the second described oil pump 2, material returned cylinder is controlled by the 7th electromagnetic relief valve
YV7, the 8th electromagnetic relief valve YV 8 and the 9th electromagnetic relief valve YV9；7th electromagnetic relief valve YV7, the 8th electromagnetic relief valve YV
8 it is electric, material returned cylinder 7 is up to complete the material returned, and the 9th electromagnetic relief valve YV9 obtains electric, and material returned cylinder is descending holding workpiece.
Beneficial effects of the present invention：
The present invention makees Jian Bian ﹑ Rong Yi Kong ﹑ workpiece Mei Guan ﹑ structures with steady An full ﹑ Jing sound Huan Bao ﹑ practicality Guang Fan ﹑ Cao
The advantage of Jin Cou ﹑ energy-saving and emission-reduction.
1. steadily shockproof, safe operation during the hydraulic press punching press of the present invention, it is not easy to cause industrial accident, power
System is provided with excess flow protection device, it is not easy to break fuselage accessory and mould, greatly improves the security performance of equipment.
2. the hydraulic press of the present invention does not have flywheel and crank, and during operating punching press, noise is low, and tranquility environmental protection greatly changes
It has been apt to the working environment of employee.
3. the hydraulic system working pressure of the present invention is adjustable, provides flexible stamping press for different die workpieces, is rushed
Workpiece does not tend to have slight crack, and processing workpiece is more accurate attractive in appearance.
4. the hydraulic press of the present invention can very easily adjust the stroke and upper and lower original position of Punching slider, for not
Same die workpiece, adjusts drawing velocity, carries out punching production rapidly and efficiently.
5. the hydraulic press of the present invention loads onto different moulds, can carry out Chong Kong ﹑ Cai Liao ﹑ Jian Jiao ﹑ Ya Yan ﹑ stretching work(
Neng ﹑ load onto bending tool and can also make bender use, and a tractor serves several purposes is practical extensive.
6. the control system of the present invention is set from dynamic ﹑ half from dynamic ﹑ crawl shelves, and automatic transmission can be semi-automatic with Continuous maching strip
Shelves can be to gear batch machining.Crawl shelves can make Punching slider stop optional position, convenient to mould fast up and down during installation mold
Jie ﹑ are accurately safe, can see line to mould accurate punching press single-piece during operation punching press, and whole machine is using extremely flexible and convenient.
7. the hydraulic system of the hydraulic press of the present invention is controlled using flexible electric, it is easy to automatic feed mechanism etc.
Peripheral equipment realizes that linkage is automatically controlled, and is easy to Zi Dongization ﹑ production line balances.
8. the hydraulic press of the present invention does not have huge fuselage and flywheel, and whole machine steelframe airframe structure is compact, identical punching press
Place shared by power punch press is less, and consumed steel are less, and does not have the brought energy consumption of secondary casting and blowdown, pole
The big enterprise that reduces consumes and social resources, has reached the effect of energy-saving and emission-reduction.
9. the hydraulic press complete machine structure of the present invention is simple, and frame is welded using quality steel plate, Jing aging strengthening models
Sturdy and durable, parts are reliable and stable, the less failure operation of equipment long-time.
10. the whole machine of the hydraulic press of the present invention adopts the c-type aditus laryngis frame of standard punch press, general locked mode handle punching sliding
Block, the working plate of standard can make various traditional punch press metal stamping dies general.Control is ridden using manual Niu ﹑ of Aning, is not changed
Become the operating habit of employee.
The hydraulic pressure deep throat punch press of 11. present invention adopts c-type deep throat inlet machine body, and on imposite, machine, without processing dead angle, is big panel beating
Punch press first choice of batch punch process.
The hydraulic press of 12. present invention belongs to universal type forcing press, it is adaptable to the press work such as blanking, punching bending, stretching.
It is widely used in automobile, agricultural machinery, motor, electrical equipment, instrument machine components, instrument and haberdashery and hardware industry.
The body parts of 13. present invention are formed with oil cylinder fixed plate and reinforcement plate weld by workbench.On workbench
T-slot is milled with, for upper screw rod fixing mould, both sides are equipped with guide rail in the positive Middle face of fuselage, adjust the bolt of fuselage both sides,
The precision of adjustable full employment slide block.Both sides are also equipped with two material returned supports, adjust the thing strong point, can be by the product or waste material in mould
Lay.
The actuating device of 14. present invention reaches hydraulic collection by oil pump by the Motor drive oil pump for being mounted in rear, hydraulic oil
In bulk, controls hydraulic oil by hydraulic valve, passes to hydraulic jack, and hydraulic jack will move up and down with movable slider.Accumulator is hydraulic pressure
Cylinder is quickly oil-filled, so as to reach the effect of high speed.Adjust the overflow valve on hydraulic manifold block, the pressure of adjustable slide work.
The slide block of 15. present invention is the actuator of forcing press stamped workpieces.Its stroke is passed by the stroke of hydraulic cylinder
Dynamic.Slide body slides in the square face of fuselage guide rail, and upper surface is connected with hydraulic cylinder piston rod by flange.On slide body
There is clamping cap, for clamping mold.Stripper is also equipped with slide block body, during adjustment discharge position, slide block must be in top dead-centre
Position.
The operating mechanism of 16. present invention adopts foot-operated electrical installation, by foot switch control apparatus, to hydraulic valve
Control electricity, walks about so as to control hydraulic cylinder band movable slider.
The left side of 17. present invention is equipped with electrical control cubicles, using the start and stop of hand push button controlled motor.Adjust manually and open
Close, control the working condition of machine,（Crawl, semi-automatic, full-automatic, stretching, punching）.
Description of the drawings
Fig. 1 is the contour structures schematic diagram of the present invention.
Fig. 2 is one of hydraulic schematic diagram of the present invention.
Fig. 3 is the two of the hydraulic schematic diagram of the present invention.
Specific embodiment
The present invention is further illustrated with reference to the accompanying drawings and examples.
Embodiment one.
As shown in Figure 1, 2.
A kind of high-speed hydraulic punching machine, it includes lathe bed 8 and slide block 9, and one end of electronic ruler 10 is fixed on lathe bed 8, another
End is connected with slide block 9, and slide block 8 is connected with the piston in hydraulic cylinder 4, and slide block 8 drives descent of piston under gravity using weight
Directly from oil suction in fuel tank 6 to working chamber, when slide block 9 goes downwards to setting position, 10 driving control system of electronic ruler makes double oil to power
Pump drives piston driving slide block fast downlink to realize high speed stamping to the quick fuel feeding in hydraulic cylinder works chamber simultaneously, and slide block down is arrived down
During extreme position, driving control system makes an oil pump fuel cut-off to electronic ruler 10 again, makes another oil pump and accumulator 3 to liquid
The quick fuel feeding of 4 oil back chamber of cylinder pressure is so that piston quickly backs into another circulation.The material returned is installed in the lower section of workbench 11
Cylinder 7, material returned cylinder 7 also by an oil pump feed in two oil pumps, realize retainer and liftout, as shown in Figure 1.The liquid of the present embodiment
Cylinder pressure is controlled by the hydraulic system shown in Fig. 2, and the hydraulic system of Fig. 2 includes the first oil pump 1, the second oil pump 2 and accumulator 3, the
The outfan of one oil pump 1 is directly connected with the working chamber of hydraulic cylinder 4 by pipeline, is pacified on the output pipe of the first oil pump 1
Equipped with the first electromagnetic relief valve YV1, the working chamber of hydraulic cylinder 4 is also connected with fuel tank by being provided with the pipeline of controllable check valve 5
It is logical；Controllable check valve is controlled by the 3rd electromagnetic relief valve YV3, and it is oily that the 3rd electromagnetic relief valve YV3 and accumulator 3 are connected in parallel on second
On the output pipe of pump 2, the second electromagnetic relief valve YV2 and the 5th electromagnetism overflow are also equipped with the output pipe of the second oil pump
Valve YV5；When 5th electromagnetic relief valve YV5 obtains electric, the second oil pump 2 is quick oil-filled to the working chamber of hydraulic cylinder 4, and institute is then made during dead electricity
State the hydraulic oil in working chamber and quickly return fuel tank 6；The oil back chamber of hydraulic cylinder 4 passes through pipeline and the 3rd electromagnetic relief valve YV3 phases
Connection is so that the pressure oil in accumulator 3 and the second oil pump 2 rapidly enters oil back chamber so that piston is quickly returned；Connecting back to
Also at least be installed in parallel a 4th electromagnetic relief valve YV4 on the pipeline of oil pocket, the 4th electromagnetic relief valve YV4 obtain it is electric after, return
Oil in oil pocket directly flows back to fuel tank 6.A regulation oil return speed has been installed in parallel on the pipeline of described connection oil back chamber also
Adjustable electromagnetic overflow valve YV6.Material returned cylinder 7 is parallel with the output pipe of the second described oil pump 2 also, material returned cylinder is controlled by
Seven electromagnetic relief valve YV7, the 8th electromagnetic relief valve YV 8 and the 9th electromagnetic relief valve YV9；7th electromagnetic relief valve YV7, the 8th
Electromagnetic relief valve YV 8 it is electric, material returned cylinder 7 is up to complete the material returned, and the 9th electromagnetic relief valve YV9 obtains electric, and material returned cylinder is descending holding
Workpiece.
The hydraulic circuit of the present embodiment can provide the stamping press of 125-500 tons, the drawing velocity of more than 60 times per minute.
In the course of work of the present embodiment：
1st, it is standby.
In system, all of electromagnetic valve is at the state of dead electricity.Now oil pump 1,2 output hydraulic pressures oil are electric by YV1, YV2
Magnetic overflow valve, direct oil sump tank, i.e. hydraulic system are in and treat working condition,.
2nd, under slide block is fast.
When under slide block 9 is fast, YV1, YV2, YV4, YV6 electromagnetic valve obtains electric simultaneously.Then, the hydraulic oil Jing YV1 of the output of oil pump 1
Electromagnetic valve is passed directly into cylinder upper cavity oil, while the oil in fuel tank 6 is by controllable check valve 5, in hydraulic cylinder works chamber.When arriving
Up to system arrange speed change point when（Or be pressure point, determination is measured by electronic ruler 10）, valve YV5 energizations, pump 2 is simultaneously to hydraulic pressure
Cylinder working chamber is oil-filled so as to reach quick punching and Quick-pressing, and valve YV4 and valve YV6 is the quick oil return of cavity of resorption.
3rd, under slide block is slow.
Now electromagnetic valve YV1 is powered, therefore the oil of the output of oil pump 1 is by YV1 valves, into cylinder upper cavity oil, oil cylinder cavity of resorption
Oil returns to fuel tank by valve 4, valve YV4 with YV6 as adjustable cavity of resorption back pressure, so as to the effect under reaching slowly.
4th, backhaul and off-load.
During backhaul, electromagnetic valve YV3 is obtained electric and is opened check valve 5, and the oil of accumulator 3 can enter the oil back chamber of hydraulic cylinder（Under
Chamber）, hydraulic cylinder works chamber（Epicoele）Oil directly from 5 oil sump tank 6 of check valve,
5th, hydraulic pump 2 be accumulator repairing, overflow valve 2 adjust pressure.
6th, YV7, YV8, YV9 work to control material returned cylinder 7, and YV8, YV9 are the upper and lower work of material returned cylinder, Y
V7 is conversion material returned cylinder cavity of resorption oil by pressure regulator valve oil sump tank, when material returned cylinder cavity of resorption is stressed, it is possible to which holding stretching will
Part, slide block press down material returned cylinder with the workpiece of stretching.
The each electromagnetic valve work state of the present embodiment with function contrast is：
| Action | YV1 | YV2 | YV3 | YV4 | YV5 | YV6 | YV7 | YV8 | YV9 |
| It is quick to rush | + | + | + | + | |||||
| Rush at a slow speed | + | ||||||||
| Backhaul | + | ||||||||
| On taking blame for others | + | + | |||||||
| Take blame for others down | + | + | + |
Embodiment two.
As shown in Figure 1,3.
The present embodiment is that hydraulic circuit is otherwise varied with the difference of embodiment one, due to the pressure for being provided it is less（100 tons
Below）Its operation principle is equivalent with embodiment identical, and the hydraulic circuit of embodiment one may also be employed.The hydraulic system of the present embodiment
Schematic diagram is as shown in Figure 3.
The course of work of the present embodiment is：
1st, it is standby.
In system, all of electromagnetic valve is at the state of dead electricity.The hydraulic oil of now oil pump output is electric by YV1, YV2
The direct oil sump tank of magnetic overflow valve, i.e. hydraulic system are in and treat working condition.
2nd, under slide block is fast.
When under slide block is fast, YV1, YV2, YV3, YV5 electromagnetic valve obtains electric simultaneously.Then, the hydraulic oil Jing YV1 of oil pump output are electric
Magnet valve is passed directly into cylinder upper cavity oil, and oil cylinder cavity of resorption oil is back to accumulator, and enters epicoele by YV2 valves, fast so as to reach
Fast punching press,
3rd, under slide block is slow
The oil of now YV1, YV3 solenoid valves, therefore oil pump output passes through YV1 valves, into cylinder upper cavity oil, under oil cylinder
The oil in chamber is passed straight back to accumulator.
4th, backhaul and off-load.
YV4 solenoid valves during backhaul, the oil of accumulator can enter oil cylinder cavity of resorption, and the oil of cylinder upper cavity oil is returned from valve YV4
Fuel tank.
5th, hydraulic pump 2 be 3 repairing of accumulator, overflow valve YV5 adjust pressure.
The each electromagnetic valve of the present embodiment and function contrast：
| Action | YV1 | YV2 | YV3 | YV4 | YV5 |
| It is quick to rush | + | + | + | ||
| Rush at a slow speed | + | + | |||
| Backhaul | + | + |
Part that the present invention does not relate to is same as the prior art or can be realized using prior art.
Claims (3)
1. a kind of high-speed hydraulic punching machine, it includes lathe bed and slide block, it is characterized in that one end of electronic ruler is fixed on lathe bed, another
End be connected with slide block, slide block is connected with hydraulic cylinder piston, slide block drive under gravity descent of piston utilize gravity directly from
In fuel tank, to working chamber, when slide block down is to setting position, electronic ruler driving control system makes double oil pumps while to hydraulic pressure for oil suction
The quick fuel feeding in cylinder working chamber drives piston driving slide block fast downlink to realize high speed stamping, when slide block down is to lower position, electricity
Driving control system makes the first oil pump to sub- chi again（1）Fuel cut-off, makes the second oil pump（2）And accumulator（3）Return to hydraulic cylinder
The quick fuel feeding of oil pocket is so that piston quickly backs into another circulation；Described hydraulic cylinder is controlled by hydraulic system, hydraulic pressure system
System includes the first oil pump（1）, the second oil pump（2）And accumulator（3）, the first oil pump（1）Outfan by pipeline directly and liquid
Cylinder pressure（4）Working chamber be connected, in the first oil pump（1）Output pipe on the first electromagnetic relief valve is installed（YV1）, hydraulic pressure
Cylinder（4）Working chamber also by being provided with controllable check valve（5）Pipeline be connected with fuel tank；Controllable check valve is controlled by the 3rd
Electromagnetic relief valve（YV3）, the 3rd electromagnetic relief valve（YV3）And accumulator（3）Second oil pump is connected in parallel on（2）Output pipe
On, the second electromagnetic relief valve is also equipped with the output pipe of the second oil pump（YV2）With the 5th electromagnetic relief valve（YV5）；The
Five electromagnetic relief valves（YV5）When obtaining electric, the second oil pump（2）Quickly to hydraulic cylinder（4）Working chamber it is oil-filled, then make during dead electricity described
Hydraulic oil in working chamber quickly returns fuel tank（6）；Hydraulic cylinder（4）Oil back chamber pass through pipeline and the 3rd electromagnetic relief valve
（YV3）It is connected so that accumulator（3）With the second oil pump（2）In pressure oil rapidly enter oil back chamber so that piston is quickly returned
Return；4th electromagnetic relief valve has at least been installed in parallel also on the pipeline of connection oil back chamber（YV4）, the 4th electromagnetic relief valve
（YV4）It is electric after, the oil in oil back chamber directly flows back to fuel tank（6）.
2. high-speed hydraulic punching machine according to claim 1, is characterized in that also parallel connection on the pipeline of described connection oil back chamber
The adjustable electromagnetic overflow valve of one regulation oil return speed is installed（YV6）.
3. high-speed hydraulic punching machine according to claim 1, is characterized in that the second described oil pump（2）Output pipe on also
It is parallel with material returned cylinder（7）, material returned cylinder is controlled by the 7th electromagnetic relief valve（YV7）, the 8th electromagnetic relief valve（YV 8）It is electric with the 9th
Magnetic overflow valve（YV9）；7th electromagnetic relief valve（YV7）, the 8th electromagnetic relief valve（YV 8）Obtain electric, material returned cylinder（7）It is up to complete
The material returned, the 9th electromagnetic relief valve（YV9）It is electric, material returned cylinder is descending holding workpiece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610152207.XA CN105619875B (en) | 2016-03-17 | 2016-03-17 | High-speed hydraulic punching machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610152207.XA CN105619875B (en) | 2016-03-17 | 2016-03-17 | High-speed hydraulic punching machine |
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| CN105619875A CN105619875A (en) | 2016-06-01 |
| CN105619875B true CN105619875B (en) | 2017-04-12 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106734811A (en) * | 2016-10-20 | 2017-05-31 | 中机锻压江苏股份有限公司 | A kind of composite molding hydraulic press |
| US20220097117A1 (en) * | 2018-10-01 | 2022-03-31 | Salvagnini Italia S.P.A. | Sheet metal working machine |
| CN109488662A (en) * | 2018-12-07 | 2019-03-19 | 浙江鼎诚炉业科技有限公司 | A kind of step heating-furnace hydraulic control system |
| CN109488661A (en) * | 2018-12-07 | 2019-03-19 | 浙江鼎诚炉业科技有限公司 | A kind of step heating-furnace hydraulic control system and method |
| CN111237262A (en) * | 2018-12-26 | 2020-06-05 | 金马工业集团股份有限公司 | Hydraulic system |
| CN111706559B (en) * | 2020-07-08 | 2022-03-15 | 天津市天锻压力机有限公司 | Quick stamping hydraulic system |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2488681Y (en) * | 2001-04-28 | 2002-05-01 | 广东锻压机床厂有限公司 | Accurate oil hydraulic press in high speed |
| CN201042856Y (en) * | 2007-06-20 | 2008-04-02 | 成都四星液压制造有限公司 | Magnetic materials dry pressing shaping oleodynamic press hydraulic system |
| JP2012066255A (en) * | 2010-09-21 | 2012-04-05 | Ntn Corp | Hydraulic press equipment for solidification treatment |
| CN201907209U (en) * | 2010-10-26 | 2011-07-27 | 东莞进力机械科技有限公司 | High-speed precision cold and hot pressure hydraulic press |
| CN103769428B (en) * | 2014-02-20 | 2016-04-06 | 佛山市南海区坤霸机床厂 | A kind of numerical control and energy saving environmental protection cold-extrusion shaping machine |
| CN203994766U (en) * | 2014-07-22 | 2014-12-10 | 沧州嘉晟液压气动设备有限公司 | Electricity liquid merges servo-pressing machine |
| CN205601234U (en) * | 2016-03-17 | 2016-09-28 | 南京宁锻重工机械制造有限公司 | High -speed hydraulic punching machine |
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