CN105984166A - Die cushion system for press machine - Google Patents
Die cushion system for press machine Download PDFInfo
- Publication number
- CN105984166A CN105984166A CN201610154168.7A CN201610154168A CN105984166A CN 105984166 A CN105984166 A CN 105984166A CN 201610154168 A CN201610154168 A CN 201610154168A CN 105984166 A CN105984166 A CN 105984166A
- Authority
- CN
- China
- Prior art keywords
- hydraulic cylinder
- press
- die
- load
- stamping die
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
- B30B15/02—Dies; Inserts therefor; Mounting thereof; Moulds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D24/00—Special deep-drawing arrangements in, or in connection with, presses
- B21D24/02—Die-cushions
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D24/00—Special deep-drawing arrangements in, or in connection with, presses
- B21D24/10—Devices controlling or operating blank holders independently, or in conjunction with dies
- B21D24/14—Devices controlling or operating blank holders independently, or in conjunction with dies pneumatically or hydraulically
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
- B30B15/08—Accessory tools, e.g. knives; Mountings therefor
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
- Control Of Presses (AREA)
Abstract
The present invention relates to a die cushion system for press machine, wherein the height level of an upper pressing module horizentally controls the heigth level of the lower pressing module. The die cushion system for press machine comprises: a hydraulic cylinder supporting and driving a press die; a proportional flow control valve supplying working fluid to a lower port of the hydraulic cylinder to raise it and receiving the working fluid within the hydraulic cylinder for discharging it while the hydraulic cylinder is being lowered; a constant pressure supplying means supplying pressured fluid to an upper port of the hydraulic cylinder to lower the hydraulic cylinder; and a controller controlling operation of the proportional flow control valve to adjust lowering and raising of the press die according to the position of the press slide through a slide position detector and a die cushion position detector, and during the lowering process of the press slide, the controller enabling the press die to exert multi-level reacting force onto the press slide.
Description
Technical field
The present invention relates to a kind of die buffer system for press, wherein, perform metal
In the press of the punching press of plate, drawing etc., control undershoot relative to the height level of upper Punching slider
The height level of pressing mold.
Background technology
As in Korean Patent Application Publication No.2007-0085303 (publication date: 2007
August 27) in it can be seen that the die buffer system for press of routine has a flow
Control valve and a flow supply pump realize the height level that die buffer part moves up and down.So
And, the response speed in this system is the slowest so that can only realize the one-tenth of fairly simple pattern
Type pressure, wherein, Punching slider only receives the pressure of change from high level to low-level and (sees
Fig. 3 of this Korean Patent Application Publication).
But, in the metallic plate formed by the briquetting pressure of this simple pattern,
There may be elastic return and residual stress, this will cause the defect of formed product.
Particularly, during the punch forming such as deep-draw of such as high-strength steel sheet, show at needs
Write in the operation changing plastic deformation, only apply the conventional mould of the briquetting pressure of this simple pattern
Tool buffer system may result in the tear of formed product.
Summary of the invention
[technical problem]
Therefore, it is an object of the invention to provide a kind of be capable of following aspect for pressing
The die buffer system of bed: the die buffer part response speed relative to Punching slider can be improved
Apply the briquetting pressure of various pattern, enabling farthest reduce because of stamping forming
The plastic deformation of object and the elastic return that causes and residual stress.
[technical scheme]
In order to realize object above, the present invention provides a kind of die buffer system for press,
Including hydraulic cylinder, it supports and drives stamping die, raised relative to driving in upside and
The Punching slider reduced, stamping die is arranged on downside；Operated proportional flow control valve, it is via
One pump receives the working fluid from tank, and by the lower port of working fluid supply to hydraulic cylinder
Raise hydraulic cylinder, and receive the work in hydraulic cylinder when hydraulic cylinder is lowered from lower port
Fluid, and working fluid is discharged to tank；Constant voltage feeding mechanism, it receives via the second pump
From the pressure fluid of tank, and the upper port of pressure fluid supply to hydraulic cylinder is utilized add
Baric flow body reduces hydraulic cylinder；Slide position detector, it is for detecting the position of Punching slider；
Die buffer part position detector, it is for detecting the position of stamping die；And controller, its
Control the operation of operated proportional flow control valve, with via slide position detector and die buffer part position
Put detector according to the reduction of the position adjustments stamping die of Punching slider and rising, and in punching press
During the decline process of slide block, controller controls the operation of operated proportional flow control valve so that punching press
Mould can apply the counteracting force of multiple levels to Punching slider.
According to an aspect of the present invention, the counteracting force of multiple levels is controlled, to produce
Initial load when Punching slider declines and comes into contact with stamping die, than initial load big
Heavy load and the final load less than initial load.
According to an aspect of the present invention, between initial load and maximum load, ratio is produced just
Begin to load the first little intermediate loads, and generation is compared between maximum load and final load
The second intermediate loads that back loading is little.
According to an aspect of the present invention, in the first intermediate loads and the second intermediate loads extremely
Few one is zero load.
According to an aspect of the present invention, Punching slider and stamping die during zero load each other
Separate.
According to an aspect of the present invention, controller controls the operation of operated proportional flow control valve,
Stamping die is made to decline with the speed that the speed than Punching slider is low, in order to alleviate Punching slider and decline
And contact impact when coming into contact with stamping die.
[beneficial effect]
According to invention as described above, except the proportional flow control for raising hydraulic cylinder
Outside valve processed, the die buffer system for press also includes that the constant voltage for reducing hydraulic cylinder supplies
Answer device, to improve the response speed of stamping die.
Therefore, it can the Punching slider declined is applied the counteracting force of multiple levels so that
The metallic plate being formed can be aligned and apply the Stress Control of multiple levels, to remove forming process
Elastic return afterwards and residual stress.
Furthermore it is possible to improve the response speed of stamping die and the anti-of multiple level can be realized
Active force so that the briquetting pressure of various pattern can be applied.Therefore, even if at needs significantly
In the operations such as the such as deep-draw of change plastic deformation, it is also possible to form the product of high-quality.
Accompanying drawing explanation
Fig. 1 is according to an exemplary embodiment of the present invention for the die buffer system of press
Schematic diagram；
Fig. 2 to Fig. 6 shows the mould for press that can be realized by the schematic diagram of Fig. 1
The curve chart that the position control of the stamping die in buffer system and load control.
Detailed description of the invention
As it is shown in figure 1, according to an exemplary embodiment of the present invention for the die buffer of press
System 10 includes: hydraulic cylinder 11, and it is for relative to the lower stamping die of upper Punching slider 1 lifting
2；Operated proportional flow control valve 12, it is used for raising hydraulic cylinder 11；Constant voltage feeding mechanism 13,
14, it is used for reducing hydraulic cylinder 11；And controller 15, it is for relative to Punching slider
The height level of 1 controls the height level of stamping die 2.
Operated proportional flow control valve 12 receives via pump 17 has predetermined pressure (example from tank 16
As, 130 bars are to 150 bars) working fluid, and via working fluid supply line 18
Lower port 11a of working fluid supply to hydraulic cylinder 11 is raised hydraulic cylinder 11.It addition,
Operated proportional flow control valve 12 performs the work that will spray when hydraulic cylinder is lowered from lower port 11a
The function of pumping equipment 16-1 it is discharged to as fluid.
Constant voltage feeding mechanism 13,14 receives via pump 14 has predetermined pressure from tank 16
The pressure fluid of (such as, 210 bars), and via pressure fluid supply line 13 by work
Make fluid supply to upper port 11b of hydraulic cylinder 11 to reduce hydraulic cylinder 11.
Therefore, if there is the input of the control signal from controller 15, then proportional flow
The spool 12a of control valve 12 is mobile (to the right) forward raises hydraulic cylinder 11.Although downside
Pressure P1 is lower than upper lateral pressure P2, but because piston 11c exists pressurized plane product moment, so liquid
Cylinder pressure 11 is still driven upwardly.In this case, from the pressurized stream of upper port 11b ejection
Body is temporarily stored in accumulator 19 via pressure fluid supply line 13.At accumulator
After 19 are filled, pressure fluid is discharged to pumping equipment via pressure regulation safety valve 13-1
16-1。
If the control signal of controller 15 stops existing, then operated proportional flow control valve 12
Spool 12a is mobile (to the left) backward under the effect of spring 12b.In this case, live
Plug 11c in hydraulic cylinder 11 because of on lateral pressure P2 and decline.Therefore, from lower port 11a
The working fluid of ejection is via working fluid supply line 18 passing ratio flow control valve 12
And it is discharged to pumping equipment 16-1.
Controller 15 detects the lifting position of Punching slider 1 via slide position detector 20,
So that controller 15 controls operated proportional flow control valve 12 to drive stamping die 2 oscilaltion.Separately
Outward, controller 15 receives the lifting position of piston 11c via die buffer part position detector 21
Put the feedback of (it is to say, lifting position of stamping die 2).
The control signal of controller 15 is entered by order display device 22 (such as, computer)
Row display.Meanwhile, order display device 22 can also preserve the data of control signal, monitoring
Control signal etc..
It addition, control signal can also be carried out by output device 23 (such as, printer)
Print.
Fig. 2 shows the stamping die in the die buffer system 10 of press as above
The curve chart that the position control of 2 and load control.In the accompanying drawings, curve A represents Punching slider
1 relative to the position of time, and curve B represents by controller 15 and operated proportional flow control valve
12 stamping dies 2 controlled are relative to the position of time.
Curve C represents the load that stamping die 2 receives in the next stage: work as Punching slider
1 stamping die 2 counteracting force that acts on Punching slider 1 when contacting with each other with stamping die 2 with
The stage that multiple levels apply.
With reference to Fig. 2, in Punching slider 1 starts " close to the stage " moved down, punching press
Keep intact in the position of mould 2.Punching slider 1 and stamping die 2 are performing striking out of metallic plate
" formative stage " of type contacts with each other.
During punch forming, controller 15 forwardly and rearwardly controls ratio stream with multiple levels
Control valve 12, has the multiple layers as shown in figure curve C controlling the load of stamping die 2
Level.Therefore, stamping die 2 applies the retroaction of multiple level to the Punching slider 1 contacted
Power.In fig. 2, to include producing high capacity with three levels of next stage: initial load is produced
Raw stage C1, wherein, Punching slider 1 declines and starts to contact with stamping die 2；Maximum negative
Carry generation stage C3, wherein, produce the maximum load bigger than initial load；And finally bear
Carry generation stage C5, wherein, produce the final load less than initial load.
In this case, produce in the middle of the first of the first intermediate loads less than initial load
Load generation stage C2 is clipped in initial load and produces between stage and maximum load generation stage.
And, the second intermediate loads producing second intermediate loads less than final load produces the stage
C4 is clipped in maximum load and produces between stage and final load generation stage.
Then, the plastic deformation of metallic plate is carried out by five stages.It addition, it is many producing
In the stage of the counteracting force of individual level, such as maximum load produces stage C3 and final load produces
Raw stage C5 etc., remove the elastic return and residual stress that may produce during plastic deformation.
Owing to " formative stage " belongs to the comparatively short time period, it is therefore desirable to hydraulic cylinder 11
Supplement the additional decrease such as such as constant voltage feeding mechanism 13,14 and drive source so that stamping die 2 energy
Enough during the C1 stage to C5 stage, apply multiple level counteracting force.
In order to alleviate impact when Punching slider 1 and stamping die 2 come into contact with each other in Fig. 2
D, as it is shown on figure 3, preaceleration stage E can be arranged, at this preaceleration stage E, hydraulic pressure
Cylinder 11 declines with low speed simultaneously.Therefore, start each other to connect when Punching slider 1 and stamping die 2
When touching, can significantly alleviate impact D'.
Before " formative stage ", the technology of instantaneous generation preaceleration stage E is impossible,
Unless arranged constant voltage feeding mechanism 13,14 and operated proportional flow control valve 12 realizes hydraulic pressure
The instantaneous of cylinder 11 front and back drives.
Fig. 4 shows another forming process.In this process, the punching press represented with curve A
Slide block 1 declines and contacts with the stamping die 2 represented with curve B, strikes out carrying out first
Type.Then, Punching slider 1 raises and again contacts stamping die 2 with reducing, to carry out second
Punch forming.Then, Punching slider 1 again raises and contacts stamping die 2 with reducing, to enter
Row the 3rd punch forming.
In this case, when Punching slider 1 in " formative stage " two separation
Carve when raising and reduce, stamping die 2 along with its separate with Punching slider 1 and by 0 (zero)
Load.
It addition, according to the die buffer system 10 for press of the present invention, when using curve A
The Punching slider 1 represented, when " formative stage " raises with predetermined stroke and reduce, uses curve
The stamping die 2 that B represents can apply different loads, say, that applies such as Fig. 5 and Tu
Different counteracting forces between correspondence course as shown in the of 6.
Although it have been described that the mould for press delays according to an exemplary embodiment of the present invention
Flushing system 10, but without departing from the scope and spirit of the present invention, various amendments,
It is also possible for increasing and replacing.
Therefore, above-described embodiment should be considered to be the reality provided for describing the present invention
Example rather than be used for limiting the present invention.
Claims (6)
1. for a die buffer system for press, including:
Hydraulic cylinder, its support and drive stamping die, raised relative to driving in upside and
The Punching slider reduced, described stamping die is arranged on downside；
Operated proportional flow control valve, it receives from the working fluid of tank via the first pump, and
The lower port of described working fluid supply to described hydraulic cylinder is raised described hydraulic cylinder, and
The described work in described hydraulic cylinder is received from described lower port when described hydraulic cylinder is lowered
Fluid, and described working fluid is discharged to described tank；
Constant voltage feeding mechanism, it receives from the pressure fluid of described tank via the second pump, and
And the upper port of described pressure fluid supply to described hydraulic cylinder is utilized described pressure fluid
Reduce described hydraulic cylinder；
Slide position detector, it is for detecting the position of described Punching slider；
Die buffer part position detector, it is for detecting the position of described stamping die；And
Controller, it controls the operation of described operated proportional flow control valve, with via described slide block
Position detector and described die buffer part position detector are according to the position of described Punching slider
Regulate reduction and the rising of described stamping die, and in the decline process phase of described Punching slider
Between, described controller controls the operation of described operated proportional flow control valve so that described stamping die energy
Enough counteracting forces that described Punching slider is applied multiple levels.
Die buffer system for press the most according to claim 1, wherein, institute
The counteracting force stating multiple level is controlled, and declines and start to connect at described Punching slider to produce
Initial load, the maximum load bigger than described initial load and ratio when touching described stamping die are described
The final load that initial load is little.
Die buffer system for press the most according to claim 2, wherein,
Produce in first less than described initial load between described initial load and described maximum load
Between load, and produce more negative than described between described maximum load and described final load
Carry the second little intermediate loads.
Die buffer system for press the most according to claim 3, wherein, institute
At least one stated in the first intermediate loads and described second intermediate loads is zero load.
Die buffer system for press the most according to claim 4, wherein, institute
State Punching slider and described stamping die is separated from one another during described zero load.
Die buffer system for press the most according to claim 1, wherein, institute
State controller and control the operation of described operated proportional flow control valve, make described stamping die with than described punching
The speed that the speed of pressure slide block is low declines, in order to alleviates described Punching slider and declines and come into contact with
Contact impact during described stamping die.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2015-0038585 | 2015-03-20 | ||
| KR1020150038585A KR101530608B1 (en) | 2015-03-20 | 2015-03-20 | Die cushion system for press machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105984166A true CN105984166A (en) | 2016-10-05 |
Family
ID=53519550
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610154168.7A Pending CN105984166A (en) | 2015-03-20 | 2016-03-17 | Die cushion system for press machine |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US20160271675A1 (en) |
| KR (1) | KR101530608B1 (en) |
| CN (1) | CN105984166A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106553377A (en) * | 2016-11-22 | 2017-04-05 | 天津绍辉科技有限公司 | Electrichydraulic control press with pressure holding function and hydraulic changeover function |
| CN106553376A (en) * | 2016-11-22 | 2017-04-05 | 天津绍辉科技有限公司 | Electrichydraulic control press with hydraulic changeover function |
| CN106739122A (en) * | 2016-11-22 | 2017-05-31 | 天津绍辉科技有限公司 | The electrichydraulic control press of mechanical signal commutation |
| CN108555106A (en) * | 2018-06-08 | 2018-09-21 | 中山市新泰五金制品有限公司 | A kind of oleo cushion air cushion |
| CN110227751A (en) * | 2018-03-05 | 2019-09-13 | 会田工程技术有限公司 | Cushion pins pressure equalization means, the die cushion with cushion pins pressure equalization function and cushion pins pressure equalization methods |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102016120068A1 (en) * | 2016-10-21 | 2018-04-26 | Voith Patent Gmbh | Hydraulic drive for a die cushion device of a press |
| JP6922584B2 (en) * | 2017-09-19 | 2021-08-18 | トヨタ自動車株式会社 | Press molding method and press molding equipment |
| JP6662445B1 (en) * | 2018-12-26 | 2020-03-11 | ダイキン工業株式会社 | Die cushion device and press machine |
| KR102069998B1 (en) | 2019-06-26 | 2020-01-23 | 유한회사 제스텍 | Slide controlling system for press machine |
| JP7381438B2 (en) * | 2020-12-18 | 2023-11-15 | アイダエンジニアリング株式会社 | die cushion device |
| JP7419224B2 (en) | 2020-12-25 | 2024-01-22 | アイダエンジニアリング株式会社 | die cushion device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01249227A (en) * | 1988-03-31 | 1989-10-04 | Komatsu Ltd | Pressure controller for press die cushion |
| JP2568069B2 (en) * | 1986-07-30 | 1996-12-25 | 株式会社小松製作所 | Breath dicing device |
| CN101060944A (en) * | 2004-11-16 | 2007-10-24 | 会田工程技术有限公司 | Die cushion device of pressing machine |
| JP2010036225A (en) * | 2008-08-06 | 2010-02-18 | Aida Eng Ltd | Die cushion device of press machine |
| CN104043712A (en) * | 2013-03-14 | 2014-09-17 | 会田工程技术有限公司 | Drawing method and servo press system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4576639B2 (en) * | 2005-05-16 | 2010-11-10 | アイダエンジニアリング株式会社 | Die cushion device for press machine |
-
2015
- 2015-03-20 KR KR1020150038585A patent/KR101530608B1/en active IP Right Grant
-
2016
- 2016-03-02 US US15/058,556 patent/US20160271675A1/en not_active Abandoned
- 2016-03-17 CN CN201610154168.7A patent/CN105984166A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2568069B2 (en) * | 1986-07-30 | 1996-12-25 | 株式会社小松製作所 | Breath dicing device |
| JPH01249227A (en) * | 1988-03-31 | 1989-10-04 | Komatsu Ltd | Pressure controller for press die cushion |
| CN101060944A (en) * | 2004-11-16 | 2007-10-24 | 会田工程技术有限公司 | Die cushion device of pressing machine |
| JP2010036225A (en) * | 2008-08-06 | 2010-02-18 | Aida Eng Ltd | Die cushion device of press machine |
| CN104043712A (en) * | 2013-03-14 | 2014-09-17 | 会田工程技术有限公司 | Drawing method and servo press system |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106553377A (en) * | 2016-11-22 | 2017-04-05 | 天津绍辉科技有限公司 | Electrichydraulic control press with pressure holding function and hydraulic changeover function |
| CN106553376A (en) * | 2016-11-22 | 2017-04-05 | 天津绍辉科技有限公司 | Electrichydraulic control press with hydraulic changeover function |
| CN106739122A (en) * | 2016-11-22 | 2017-05-31 | 天津绍辉科技有限公司 | The electrichydraulic control press of mechanical signal commutation |
| CN106739122B (en) * | 2016-11-22 | 2018-10-23 | 宣城托新精密科技有限公司 | The electrichydraulic control press of mechanical signal commutation |
| CN110227751A (en) * | 2018-03-05 | 2019-09-13 | 会田工程技术有限公司 | Cushion pins pressure equalization means, the die cushion with cushion pins pressure equalization function and cushion pins pressure equalization methods |
| CN110227751B (en) * | 2018-03-05 | 2022-09-13 | 会田工程技术有限公司 | Buffer pin pressure balancing device, die buffer device with buffer pin pressure balancing function and buffer pin pressure balancing method |
| CN108555106A (en) * | 2018-06-08 | 2018-09-21 | 中山市新泰五金制品有限公司 | A kind of oleo cushion air cushion |
Also Published As
| Publication number | Publication date |
|---|---|
| KR101530608B1 (en) | 2015-06-22 |
| US20160271675A1 (en) | 2016-09-22 |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20161005 |
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| WD01 | Invention patent application deemed withdrawn after publication |