EP3145650A1 - Bar press with hydraulic drive - Google Patents
Bar press with hydraulic driveInfo
- Publication number
- EP3145650A1 EP3145650A1 EP15726560.4A EP15726560A EP3145650A1 EP 3145650 A1 EP3145650 A1 EP 3145650A1 EP 15726560 A EP15726560 A EP 15726560A EP 3145650 A1 EP3145650 A1 EP 3145650A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- punch
- die
- drive
- extrusion
- internal gear
- 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.)
- Ceased
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C23/00—Extruding metal; Impact extrusion
- B21C23/21—Presses specially adapted for extruding metal
- B21C23/211—Press driving devices
Definitions
- the invention relates to a strand and tube press for forming metallic blocks in profiles, tubes, strands or the like, with a punch and a die, through which a metallic block can be pressed by means of the punch, with a billet receiver, and with a drive device at which the drive means comprises at least one master cylinder for applying the main pressing force of the punch to the metallic block.
- extrusion and tube presses are known for decades from the prior art and are used to produce a variety of components made of usually metallic materials, which pressed by a die undergo a transformation with high degree of deformation.
- Main features of conventional extrusion presses are a blocker between the punch and the billet and a pressing force generation by means of a master cylinder and a feed / retract cylinder, whereby all auxiliary movements, including the employment of the extruder to different block formats and the supply of the metallic block to the die, performed by hydraulic cylinders become.
- the size of the hydraulic drive is determined by that of the Extrusion and applied pressing force and optionally determines the required for the desired forming press speed.
- extruders usually bring about pressing forces of about 10 to more than 160 MN. Large extruders with 100 MN press forces are able to reshape block lengths of more than 2,000 mm with a block diameter of more than 1,000 mm. Such extruders are known for example from DE 10 227 488 B3 or EP 1 526 930 B1.
- the drive device on the one hand at least one speed-controlled internal gear pump for providing the hydraulic oil to the at least one master cylinder, by means of which the at least one master cylinder is driven, and that the drive means on the other hand additionally at least one hydraulic feed and / or retraction cylinder for moving the punch relative to Stem or at least one electric drive for moving the punch relative to the die comprises, by means of which the punch is movable to a position in which the speed-controlled internal gear pump only then interacts with the at least one master cylinder such that the main pressing force by means of at least one master cylinder on the Stamp is applied.
- the thus configured drive device of the extrusion and tube press it is possible to operate the speed-controlled internal gear pump or Snnenschwradpumpen standard electric motors with larger mass carrier in combination with smaller-sized frequency inverters.
- small-sized frequency converter means frequency converters which are normally not dimensioned sufficiently large for the selected size of standard electric motors.
- variable-speed internal gear pumps also allows a simple and robust construction of all components and provides a maintenance-friendly and easy-to-understand drive system.
- Such internal gear pumps which are already known from the prior art in a variety of embodiments, are particularly suitable for use with variable-speed drive and have already proved their special suitability for load changes and in terms of energy consumption in internal tests.
- the device according to the invention also allows a complete standstill of the pump drives when no hydraulic oil has to be made available under pressure.
- the at least one speed-controlled internal gear pump is preferably used only for the actual reforming process and possibly also for a press residual scissor process.
- the at least one frequency-controlled internal gear pump is controllable by means of a suitably designed control of the extrusion and tube press such that the combination of the number of internal gear pump used n and selected frequency gives the best possible efficiency.
- the flow rate and the number of internal gear pumps are calculated by a linear interpolation in a two-dimensional field, in real time first with a theoretical value. Subsequently, it can be adjusted even finer by means of a control device designed for this purpose.
- At least one hydraulic feed and / or retraction cylinder is provided for moving the stamp relative to the die.
- this ensures that the main force transmission is effected by means of one or more master cylinder, the feed and the withdrawal of the punch relative to the die in a position in which the press force transfer is to use, and out of this, but by means of preferably smaller feed and / or retreat cylinder.
- the drive device comprises at least one speed-controlled internal gear pump for supplying the hydraulic oil to the at least one HauptzySinder, by means of which the main press transfer occurs, and at least one hydraulic feed and / or retraction cylinder for moving the punch relative to the die or at least one electric drive for moving the punch relative to the die, to move the punch to a position in which the main press force transmission begins.
- the amount of hydraulic oil to be delivered over the entire operation of the extrusion and tube press is limited to the minimum necessary for such drive concepts.
- the Snnen leopardradpumpe must only be driven with an increased drive power when main press forces on the extrusion and tube press must be actually applied, that is, if by means of at least one master cylinder, a main press force transfer must be made on the stamp. Otherwise, the internal gear pump can be driven at a significantly reduced power. Or the internal gear pump is completely out of operation. As a result, the drive device or the entire extrusion and tube press works energetically much more effective.
- the drive means comprises means for moving the punch and / or the billet and / or the die and means for applying a pressing force between the die and punch.
- the drive means comprises means for moving the punch and / or the block picker and / or a tool slide comprising the die and means for applying a pressing force between the tool slide and the punch.
- the die is part of the tool slide and the die is moved together with this tool slide. This is generally true in the present invention.
- the drive device preferably also comprises means for moving a press rest scissors. It is understood that the at least one hydraulic feed and / or retraction cylinder for moving the punch relative to the die, but also in particular the at least one electric drive for moving the punch relative to the die can be formed very different.
- the electric drive it is advantageous if this comprises a standard asynchronous machine, since the electric drive can be structurally particularly simple realized.
- At least the at least one electric drive is an electric servo drive for moving the punch relative to the die.
- the Snnen leopardradpumpe is operable in the range of startup to provide the desired system pressure under mixed friction. This significantly reduces the pulsations generated by the pump, especially at low speed ranges, compared to conventional axial piston pumps and to the unavoidable minimum.
- the at least one Snnen leopardradpumpe is cumulatively or alternatively even under an external hydrostatic lubrication operable.
- the drive device is connected to a control unit in which a characteristic curve or a plurality of characteristic curves for the internal gear pump and / or its drive motor or motors are stored.
- a characteristic curve or a plurality of characteristic curves for the internal gear pump and / or its drive motor or motors are stored.
- the pulsation of the internal gear pump in particular the preferred internal gear pump, especially at low speeds is lower than in axial piston pumps, preferably by a measure of at least 20%, more preferably at least 30% compared to the pulsation of conventional axial piston pumps.
- the internal gear pump it is particularly advantageous for the internal gear pump to have only three movable essential components.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Extrusion Of Metal (AREA)
- Control Of Presses (AREA)
- Rotary Pumps (AREA)
- Details And Applications Of Rotary Liquid Pumps (AREA)
- Press Drives And Press Lines (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102014209685.5A DE102014209685B3 (en) | 2014-05-21 | 2014-05-21 | Extruder with hydraulic drive |
PCT/EP2015/061270 WO2015177285A1 (en) | 2014-05-21 | 2015-05-21 | Bar press with hydraulic drive |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3145650A1 true EP3145650A1 (en) | 2017-03-29 |
Family
ID=53276845
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP15726560.4A Ceased EP3145650A1 (en) | 2014-05-21 | 2015-05-21 | Bar press with hydraulic drive |
Country Status (7)
Country | Link |
---|---|
US (1) | US20170113256A1 (en) |
EP (1) | EP3145650A1 (en) |
JP (1) | JP2017518189A (en) |
CN (1) | CN106457328A (en) |
DE (1) | DE102014209685B3 (en) |
TW (1) | TW201600192A (en) |
WO (1) | WO2015177285A1 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3307449A1 (en) * | 2015-06-11 | 2018-04-18 | Turla S.r.l. | Extrusion press for non-ferrous metal sections |
AT526048A1 (en) * | 2022-04-05 | 2023-10-15 | Trumpf Maschinen Austria Gmbh & Co Kg | Forming machine for forming workpieces and a method for this |
DE102023105916A1 (en) | 2022-11-14 | 2024-05-16 | Sms Group Gmbh | Extrusion press |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0822017A1 (en) * | 1996-07-24 | 1998-02-04 | SMS EUMUCO GmbH | Drive arrangement for a metal extrusion press |
Family Cites Families (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58124082A (en) * | 1982-01-20 | 1983-07-23 | Sumitomo Precision Prod Co Ltd | Compound pump |
JPH0815616B2 (en) * | 1989-11-17 | 1996-02-21 | 宇部興産株式会社 | Extrusion press equipment |
JP2728965B2 (en) * | 1990-03-27 | 1998-03-18 | 新日本製鐵株式会社 | Continuous drawing equipment for metal wire or metal tube |
DE19680008C1 (en) * | 1995-05-16 | 2002-01-24 | Globemag L P | Power transmission system directly controlling electrical supply to variable speed motor driving hydraulic positive displacement pump |
DE19802137C1 (en) * | 1998-01-22 | 1999-03-04 | Bosch Gmbh Robert | Gear pump for fluids |
DE10227488B3 (en) * | 2002-06-19 | 2004-02-12 | Sms Eumuco Gmbh | Extrusion and tube press |
DE10236297A1 (en) * | 2002-08-08 | 2004-02-19 | Sms Eumuco Gmbh | Main/press cylinder for pipe extruder and extrusion press has projecting rod with integrated advance and retraction cylinder and hollow bore containing a tube |
JP4263936B2 (en) * | 2003-04-07 | 2009-05-13 | 住友精密工業株式会社 | Inscribed gear pump |
CN201376010Y (en) * | 2009-03-19 | 2010-01-06 | 汪勤利 | Pressing machine |
ES2563486T3 (en) * | 2009-10-27 | 2016-03-15 | Hermann Schwelling | Procedure and device for regulating the operation of packing presses |
CN202238989U (en) * | 2011-09-19 | 2012-05-30 | 南通润德机械科技有限公司 | Metal extruder with toggle rods |
JP2013078169A (en) * | 2011-09-29 | 2013-04-25 | Daikin Ind Ltd | Hydraulic unit |
ES2577857T3 (en) * | 2011-10-31 | 2016-07-19 | Sms Group Gmbh | Procedure for producing metal extrusion press products as well as extrusion press and tubes |
ES2570328T3 (en) * | 2011-10-31 | 2016-05-17 | Sms Group Gmbh | Extrusion press and tubes or extrusion press for metal |
CN102671988A (en) * | 2012-04-06 | 2012-09-19 | 东南大学 | Automatic extrusion modeling device for curve chassis of vibration hopper |
CN203189407U (en) * | 2013-03-01 | 2013-09-11 | 苏州星之瑞伺服科技有限公司 | Hydraulic oil cylinder control system |
-
2014
- 2014-05-21 DE DE102014209685.5A patent/DE102014209685B3/en active Active
-
2015
- 2015-05-19 TW TW104115861A patent/TW201600192A/en unknown
- 2015-05-21 CN CN201580025596.3A patent/CN106457328A/en active Pending
- 2015-05-21 EP EP15726560.4A patent/EP3145650A1/en not_active Ceased
- 2015-05-21 WO PCT/EP2015/061270 patent/WO2015177285A1/en active Application Filing
- 2015-05-21 US US15/311,894 patent/US20170113256A1/en not_active Abandoned
- 2015-05-21 JP JP2017513338A patent/JP2017518189A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0822017A1 (en) * | 1996-07-24 | 1998-02-04 | SMS EUMUCO GmbH | Drive arrangement for a metal extrusion press |
Non-Patent Citations (1)
Title |
---|
See also references of WO2015177285A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO2015177285A1 (en) | 2015-11-26 |
JP2017518189A (en) | 2017-07-06 |
DE102014209685B3 (en) | 2015-10-22 |
TW201600192A (en) | 2016-01-01 |
US20170113256A1 (en) | 2017-04-27 |
CN106457328A (en) | 2017-02-22 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP1318906B1 (en) | Controller for a hydraulic press and method for the operation thereof | |
EP3174650B1 (en) | Punching device and method for punching a workpiece | |
EP0972631B1 (en) | Hydraulic drive for a press | |
EP2420681B1 (en) | Hydraulic linear drive device | |
WO2011035828A1 (en) | Prestressed hydraulic drive with variable-speed pump | |
EP2773470B1 (en) | Method for producing metal extrusion press products, and extrusion and tube press | |
EP2846942B1 (en) | Hydraulic extrusion press and method for operating a hydraulic extrusion press | |
WO2011026944A1 (en) | Electromotive hydraulic drive, and method for providing a defined hydraulic pressure and/or volume | |
WO2015177285A1 (en) | Bar press with hydraulic drive | |
DE102011114241B4 (en) | Hydraulic drive device, hydraulic output stage of a hydraulic servo-control valve, servo-control valve and powder press | |
EP2229537B1 (en) | Hydraulic drive device having two pressure chambers and method for operating a hydraulic drive device having two pressure chambers | |
DE1907077A1 (en) | Press and method for deep drawing sheet metal blanks to containers | |
DE2349351C3 (en) | Hydraulic system for a press | |
AT504416B1 (en) | METHOD AND DEVICE FOR INJECTING AN INJECTION MOLDING MACHINE | |
EP3801941B1 (en) | Extrusion press with electro-hydrostatic control system, method and use | |
EP3774316B1 (en) | Press drive with energy recovery | |
EP3421155B1 (en) | Hydraulic circuit device for a cold chamber casting machine | |
EP3495075B1 (en) | Hydraulic circuit assembly for a cold or hot chamber die casting machine | |
AT521822B1 (en) | Plastic molding machine and method of operating a plastic molding machine | |
EP0375888A2 (en) | Screw press | |
EP2316639A2 (en) | Method and device for regulating the drive of baling pressses | |
AT520171B1 (en) | Hydraulic system for a molding machine | |
DE10332509B3 (en) | Production of a workpiece provided with holes comprises a perforating process during which a pump separate to a fluid high pressure producing system partly delivers a pressurized fluid | |
DE2047961A1 (en) | Deformation of a work piece of unlimited - length using an extrusion process | |
DE1777344B2 (en) | PRESS FORM FOR HYDRAULIC SHAPE FORMING |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE |
|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE |
|
17P | Request for examination filed |
Effective date: 20161221 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
AX | Request for extension of the european patent |
Extension state: BA ME |
|
DAV | Request for validation of the european patent (deleted) | ||
DAX | Request for extension of the european patent (deleted) | ||
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: EXAMINATION IS IN PROGRESS |
|
17Q | First examination report despatched |
Effective date: 20191206 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: EXAMINATION IS IN PROGRESS |
|
APBK | Appeal reference recorded |
Free format text: ORIGINAL CODE: EPIDOSNREFNE |
|
APBN | Date of receipt of notice of appeal recorded |
Free format text: ORIGINAL CODE: EPIDOSNNOA2E |
|
APAF | Appeal reference modified |
Free format text: ORIGINAL CODE: EPIDOSCREFNE |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R003 |
|
APBT | Appeal procedure closed |
Free format text: ORIGINAL CODE: EPIDOSNNOA9E |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION HAS BEEN REFUSED |
|
18R | Application refused |
Effective date: 20210830 |
|
110E | Request filed for conversion into a national patent application [according to art. 135 epc] |
Effective date: 20210820 |