CN108746270A - A kind of hydraulic bending press - Google Patents
A kind of hydraulic bending press Download PDFInfo
- Publication number
- CN108746270A CN108746270A CN201810765987.4A CN201810765987A CN108746270A CN 108746270 A CN108746270 A CN 108746270A CN 201810765987 A CN201810765987 A CN 201810765987A CN 108746270 A CN108746270 A CN 108746270A
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- China
- Prior art keywords
- pump
- piston
- cylinder
- piston pump
- rotary shaft
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- 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.)
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Classifications
-
- 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
- B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
- B21D5/06—Bending sheet metal along straight lines, e.g. to form simple curves by drawing procedure making use of dies or forming-rollers, e.g. making profiles
-
- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Press Drives And Press Lines (AREA)
Abstract
The invention discloses a kind of hydraulic bending press, lower table, which is arranged, to be removably retained in the lower part of vehicle frame and mold on the lower table, upper table is opposite with lower table in vertical direction and removably maintains punch, lift cylinder includes tubular cylinder and the piston in cylinder interior is arranged, piston pump includes pump rotary shaft, rotation motor, and hang plate is pivotally displaced relative to pump rotary shaft and is configured to change the pump delivery of piston pump by pivoting action.The present invention can be realized energy saving by the power consumption of the electric rotating machine of reduction plunger pump.
Description
Technical field
The present invention relates to hydraulic press technical fields, and in particular to a kind of hydraulic bending press.
Background technology
In recent years, liquid braking device is there are many development pattern, and the structure of traditional Normal hydraulic press brake can be with
It is briefly described below, general hydraulic pressure brake includes body frame, is provided in the lower part of the organism frame removable
Keep the lower table of mold with unloading.In addition, by removably serving for punch being kept to be arranged on the top of main body frame, so as to
In face of lower table and it can lift and (move in vertical direction) in vertical direction.Desk (lower table and serve) in body frame
Both sides, in each one lift cylinders for being promoted and reducing upper table of setting in longitudinal direction and both sides.In addition, each lift cylinder includes tubulose cylinder
Body and the piston being arranged in cylinder body, so as to be promoted and reduced, be vertically divided by piston on the inside of cylinder body upper chamber and
Lower chamber.Piston pump is configured as the appropriate location on organism frame and provides upper chamber and lower liquid to each hydraulic cylinder
Pressure chamber provides pressure oil.In addition, piston pump includes pump rotary shaft, is configured as rotating the electric rotating machine of the pump rotary shaft and opposite
In the pump inclined hang plate of rotary shaft, hang plate is constant (constant) relative to the angle of inclination of pump rotary shaft, is set according to the inclination angle
Surely discharge volume is pumped.Here, it in the case where the driving condition of lift cylinders is light condition, sets the lifting speed of upper table to
At a high speed, and in the case where the actuating state of lift cylinders is high load condition, the lifting speed of upper table is set to low speed.
Technical solution
The invention mainly solves the technical problem of providing a kind of hydraulic bending press, it is configured to by with punch and mold
It clamps workpiece and is bent plate workpiece, which is characterized in that the hydraulic bending press includes：Lower table is arranged in vehicle frame
Lower part and mold are removably retained on the lower table；Upper table is arranged on the top of main body frame, make its
It is opposite with lower table in vertical direction, and can be lifted relative to lower table, and on upper table removably
Maintain punch；Lift cylinder includes tubular cylinder and the piston in cylinder interior is arranged, so that cylinder interior is divided into a pair of of liquid
It pressure chamber and can be lifted relative to cylinder body, to raise and reduce upper table relative to lower table；Piston pump includes that pump revolves
Shaft and rotation motor, the rotation motor are configured to that pump rotary shaft is made to rotate；And hang plate, it can be relative to pump rotary shaft
It is pivotally displaced and is configured to change the pump delivery of piston pump by pivoting action, piston pump is configured to supply pressure oil
To the hydraulic pressure chamber of lift cylinder, wherein in the case where the actuating state of lift cylinder is light condition, the pump delivery quilt of piston pump
Pump delivery on the basis of setting, and it is set to be less than the small discharge pump delivery of benchmark pump, in the actuating state of lift cylinder
In the case of high load condition, displaced volume is to reduce the torque of the rotation motor of piston pump.
Optionally, in the case where lift cylinders are in high load condition, the pump of the discharge volume of pump and piston pump is discharged
The product of pressure is equal to or less than the product for pumping discharge volume.And in the driving condition of lift cylinders it is light condition
In the case of plunger pump pump discharge head.
Optionally, wherein piston pump includes guide chamber, which is configured as being pivotally displaced hang plate, and constructs
It is pivotally moved from corresponding to the benchmark obliquity with reference to pump discharge volume at hang plate is made.When pilot pressure is applied to elder generation
When leading room, correspond to the small discharge obliquity of small discharge pump displaced volume.
The beneficial effects of the invention are as follows：
A kind of hydraulic bending press of the present invention, the power consumption of the electric rotating machine by reducing plunger pump, can realize energy saving.
Description of the drawings
Fig. 1 is the figure for showing hydraulic system according to an embodiment of the invention.
Fig. 2 is the figure for the operation for describing hydraulic system according to an embodiment of the invention.
Fig. 3 is the figure for the operation for describing hydraulic system according to an embodiment of the invention.
Fig. 4 is the figure for the operation for describing hydraulic system according to an embodiment of the invention.
Embodiment
The preferred embodiments of the present invention will be described in detail below so that advantages and features of the invention can be easier to by
It will be appreciated by those skilled in the art that so as to make a clearer definition of the protection scope of the present invention.
As shown in Figs 1-4, promotion and reduction are provided on the left and right sides of main body frame 7 (both sides of both sides on longitudinal direction)
The lift cylinder 15 of upper table 13, in addition, each lift cylinder 15 is included tubular cylinder 17, is arranged in cylinder body 17 in a manner of liftable
Piston 19 and the piston rod 21 of upper table 13 is integrally connected and is connected to the piston 19.The inside of cylinder body 17 passes through piston
19 are vertically divided into upper chamber 23 and lower chamber 25, such as are configured as the linear mark of the height and position of detection upper table 13
Spend the appropriate location being arranged on main body frame 7.By monitoring the detected value from the position-detection sensor, it may be determined that
Punch 3 is located in before the abutting contact position that punch 3 is contacted with workpiece W, punch 3 be located in before contact position close to position
It sets.Type bidirectional piston pump 31 is set on the appropriate location on body shell 7, and it is each which is configured as selection
The top hydraulic pressure chamber 23 of lift cylinder 15 or lower hydraulic room 25, and supply pressure oil is provided it, in addition, bidirectional ram pump 31 wraps
Pump rotary shaft 33 is included, servo motor 35 as control motor is configured as that pump rotary shaft 33 is made to rotate along forward and reverse, tilt
Plate 37 is pivotly moved relative to the pump rotary shaft 33, changes pump delivery by pivotable movement, pilot chamber 39 is configured
At being pivotally displaced hang plate 37.In the case where the starting state of lift cylinders 15 is light condition, the pump of type bidirectional piston pump 31
Discharge capacity is arranged to benchmark pump delivery QA, and is set as low-capacity pump discharge volume QB.It is in the driving condition of lift cylinder 15
In the case of high load condition, it is less than and refers to pump delivery QA, to reduce the torque of the servo motor 35 of type bidirectional piston pump 31.
In addition, in the case where lift cylinders 15 are higher load condition (product of type bidirectional piston pump 31 is in higher load condition), QBPb
The product of the pump discharge head Pb of pump delivery QB and type bidirectional piston pump 31, be equal to or be less than QAPa, this be
The starting state of lift cylinder 15 is the pump delivery QA and pump discharge head PA of bidirectional ram pump 31 in the case of light condition
Product (product of second piston pump 31) light condition.In the case where the driving condition of lift cylinder 15 is high load condition,
QBPb is the product for the pump discharge head Pb for pumping discharge volume QB and type bidirectional piston pump 31.At high load conditions, two-way column
Plug pump 31 may be configured as being approximately equal to QAPa, and QAPA is the pump discharge head Pa of pumping cylinder discharge rate QA and bidirectional ram pump 31
Product.In addition, type bidirectional piston pump 31 is configured to when pilot pressure is applied to pilot chamber 39, hang plate 37 is pumped from benchmark and is discharged
It measures QA to rotate relative to benchmark obliquity (oblique angular position), discharge tilt angle positions correspond to low-capacity pump discharge rate
QB.In addition, type bidirectional piston pump 31 is configured as when pilot pressure is released to pilot chamber 39, hang plate 37 is pivotally from float
It puts obliquity 9b and is moved to benchmark obliquity, the one end of the first main circuit 41 is connected to a row of type bidirectional piston pump 31
Mouth is put, and the other end (the other end side) of first main circuit 41 is connected to the upper chamber 23 of each lift cylinder 15.This
Outside, one end of the second main circuit is attached partially to another discharge port of type bidirectional piston pump 31, and the second main circuit 43 is another
One end part (other end part side) is connected to the lower chamber 25 of each lift cylinder 15.One end part of precursor circuit 45 connects
To the pilot chamber 39 of type bidirectional piston pump 31, and the other end of the precursor circuit 45 is attached partially to the centre of the first main circuit 41
Part.In addition, electromagnetic switch valve 47 is arranged in the middle section of precursor circuit 45, which is configured as working as position
Detection sensor (or pressure sensor) detects that punch 3 is located at before contact position or when contact workpiece, is cut from closed state
Change to communications status.Electromagnetic switch valve 47 is configured to start to be switched to from closed state when upper table 13 is in curved workpieces W logical
Letter state, in this way, the pilot pressure of the pilot chamber 39 of type bidirectional piston pump 31 is released.
As shown in Fig. 2, pumping rotary shaft 33 by the servo motor 35 of type bidirectional piston pump 31 to be located at reference tilt Angle Position A
Bidirectional ram pump 31 hang plate 37 driving and rotate forward, as a result, lower chamber of the pressure oil from each lift cylinder 15
25 are ejected into the second main circuit 43, and pressure oil is supplied to the upper chamber 23 of each lift cylinder 15 from the first main circuit 41, lead to
The servo motor 35 of bidirectional ram pump 31 of overdriving makes pump rotary shaft 33 reversely rotate, to by the upper liquid of each lift cylinder 15
The pressure oil of pressure chamber 23 is ejected into the first main circuit 41, and provides pressure oil.The pumpage of type bidirectional piston pump 31 is according to two-way work
Plug pumps the pivoting action of 31 hang plate 37 and changes, and the pump discharge volume of type bidirectional piston pump 31 is arranged, in the work of lift cylinder 15
Make state be higher load condition in the case of, for low-capacity pump discharge volume QB be less than benchmark pump delivery QA, and
The product QBPb of type bidirectional piston pump 31 is set equal to or is less than under higher load condition.It is in the working condition of lift cylinders 15
In the case of higher load condition (unique effect of hydraulic pressure brake 1), watching for type bidirectional piston pump 31 can be fully reduced
Take the torque of motor 35.Therefore, first embodiment according to the present invention can pass through the servo motor of reduction type bidirectional piston pump 31
35 power consumption reduces the manufacturing cost of hydraulic pressure brake 1 to realize economize on electricity by reducing O.In addition, single
It is configured as pressure oil being supplied to upper chamber 23 and the lower chamber 25 of each lift cylinder 15 to piston pump 65, this is unidirectional
The appropriate location on body shell is arranged in piston pump, and unidirectional plunger pump 65 includes pump rotary shaft 67, the sense as rotation motor
Motor 69 is answered, which is configured as rotating the pump rotary shaft 67, and hang plate 71 is pivotable relative to the pump rotary shaft 67
Ground moves, and is configured to pump displaced volume by change by change.One end of precursor circuit 87 is attached partially to unidirectional work
The pilot chamber 73 of plug pump 65, and the other end of the precursor circuit 87 is attached partially to the middle section of discharge circuit 77.In addition, electric
Magnetic switch valve 89 is arranged in the middle section of precursor circuit 87, and the electromagnetic switch valve 89 has and 47 class of electromagnetic switch valve
As structure.Between the middle section and the other end of precursor circuit 87 of discharge circuit 77, check valve 91 is configured as preventing
Pressure oil flows to 65 side of reciprocating pump with unidirectional piston.In addition, one end part of spray circuit 93 is connected to the middle section of discharge circuit 77
Check-valves 91 and precursor circuit 87 the other end point between.
The sequencing of above example is only for ease of description, can not represent the quality of embodiment.
Finally it should be noted that：The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
Present invention has been described in detail with reference to the aforementioned embodiments, it will be understood by those of ordinary skill in the art that：It still may be used
With technical scheme described in the above embodiments is modified or equivalent replacement of some of the technical features；
And these modifications or replacements, various embodiments of the present invention technical solution that it does not separate the essence of the corresponding technical solution spirit and
Range.
Claims (3)
1. a kind of hydraulic bending press is configured to by being bent plate workpiece with punch and mold cramping workpiece, feature exists
In the hydraulic bending press includes：Lower table is arranged and is removably retained in the lower work in the lower part of vehicle frame and mold
Make on platform；Upper table is arranged on the top of main body frame, keeps it opposite with lower table in vertical direction, and energy
It is enough to be lifted relative to lower table, and punch is removably maintained on upper table；Lift cylinder include tubular cylinder and
Piston in cylinder interior is set, so that cylinder interior is divided into a pair of of hydraulic pressure chamber and can be lifted relative to cylinder body, with phase
Upper table is raised and reduced for lower table；Piston pump includes pump rotary shaft and rotation motor, the rotation motor construction
It is rotated at pump rotary shaft is made；And hang plate, it can be pivotally displaced relative to pump rotary shaft and be configured to transport by pivoting
The dynamic pump delivery for changing piston pump, piston pump is configured to for pressure oil to be supplied to the hydraulic pressure chamber of lift cylinder, wherein in lift cylinder
Actuating state be light condition in the case of, the pump delivery of piston pump is set to benchmark pump delivery, and is set
For the small discharge pump delivery pumped less than benchmark, in the case where the actuating state of lift cylinder is high load condition, displaced volume
To reduce the torque of the rotation motor of piston pump.
2. a kind of hydraulic bending press according to claim 1, it is characterised in that：It is in the feelings of high load condition in lift cylinders
Under condition, the product of the discharge volume of pump and the pump discharge head of piston pump is equal to or being multiplied less than pump discharge volume
Product.And the driving condition of lift cylinders be light condition in the case of plunger pump pump discharge head.
3. a kind of hydraulic bending press according to claim 1, it is characterised in that：Wherein piston pump includes guide chamber, the elder generation
It leads room to be configured as being pivotally displaced hang plate, and is configured so that hang plate pivotally from corresponding to reference to pump discharge volume
Benchmark obliquity movement.When pilot pressure is applied to pilot chamber, the small discharge corresponding to small discharge pump displaced volume is inclined
Loxosis is set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810765987.4A CN108746270A (en) | 2018-07-12 | 2018-07-12 | A kind of hydraulic bending press |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810765987.4A CN108746270A (en) | 2018-07-12 | 2018-07-12 | A kind of hydraulic bending press |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108746270A true CN108746270A (en) | 2018-11-06 |
Family
ID=63973488
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810765987.4A Pending CN108746270A (en) | 2018-07-12 | 2018-07-12 | A kind of hydraulic bending press |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108746270A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1402656A (en) * | 1999-11-05 | 2003-03-12 | 株式会社阿玛达 | Press brake and method of controlling bidirectional fluid pump of hydraulic cylinder of press brake |
| WO2010122951A1 (en) * | 2009-04-23 | 2010-10-28 | カヤバ工業株式会社 | Hydraulic drive device |
| CN104736263A (en) * | 2012-10-17 | 2015-06-24 | 株式会社天田 | Hydraulic press brake |
-
2018
- 2018-07-12 CN CN201810765987.4A patent/CN108746270A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1402656A (en) * | 1999-11-05 | 2003-03-12 | 株式会社阿玛达 | Press brake and method of controlling bidirectional fluid pump of hydraulic cylinder of press brake |
| WO2010122951A1 (en) * | 2009-04-23 | 2010-10-28 | カヤバ工業株式会社 | Hydraulic drive device |
| CN104736263A (en) * | 2012-10-17 | 2015-06-24 | 株式会社天田 | Hydraulic press brake |
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|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20181106 |
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| WD01 | Invention patent application deemed withdrawn after publication |