EP2867009B1 - Maschinenpresse - Google Patents

Maschinenpresse Download PDF

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Publication number
EP2867009B1
EP2867009B1 EP13728967.4A EP13728967A EP2867009B1 EP 2867009 B1 EP2867009 B1 EP 2867009B1 EP 13728967 A EP13728967 A EP 13728967A EP 2867009 B1 EP2867009 B1 EP 2867009B1
Authority
EP
European Patent Office
Prior art keywords
hydraulic
piston unit
machine press
press according
chamber
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.)
Active
Application number
EP13728967.4A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2867009A1 (de
Inventor
Manfred Kurz
Andreas SOCHER
Stefan GUTH
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hoerbiger Automatisierungstechnik Holding GmbH
Original Assignee
Hoerbiger Automatisierungstechnik Holding GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hoerbiger Automatisierungstechnik Holding GmbH filed Critical Hoerbiger Automatisierungstechnik Holding GmbH
Publication of EP2867009A1 publication Critical patent/EP2867009A1/de
Application granted granted Critical
Publication of EP2867009B1 publication Critical patent/EP2867009B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B30B15/16—Control arrangements for fluid-driven presses
    • B30B15/163—Control arrangements for fluid-driven presses for accumulator-driven presses
    • 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
    • B30B15/165—Control arrangements for fluid-driven presses for pneumatically-hydraulically driven presses
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
    • F15B1/26—Supply reservoir or sump assemblies
    • F15B1/265—Supply reservoir or sump assemblies with pressurised main reservoir
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
    • F15B2211/205—Systems with pumps
    • F15B2211/20507—Type of prime mover
    • F15B2211/20515—Electric motor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
    • F15B2211/205—Systems with pumps
    • F15B2211/2053—Type of pump
    • F15B2211/20569—Type of pump capable of working as pump and motor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/60—Circuit components or control therefor
    • F15B2211/625—Accumulators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
    • F15B2211/705—Output members, e.g. hydraulic motors or cylinders or control therefor characterised by the type of output members or actuators
    • F15B2211/7051—Linear output members
    • F15B2211/7055—Linear output members having more than two chambers

Definitions

  • the present invention relates to a machine press, in particular a press brake, having a machine structure, a fixed in a spatial relationship to the machine structure lower tool carrier, an upper tool carrier which is relative to the lower tool carrier linearly moved up and down by a power stroke, and one on the upper tool carrier acting, the downward movement of the upper tool carrier causing closed hydraulic drive system comprising at least one hydraulic drive unit, which in turn comprises at least one hydraulic cylinder-piston unit and at least one of these acting, supplied from a reservoir hydraulic unit, wherein in the reservoir constantly above the ambient pressure lying base pressure prevails
  • Such machine presses are known in various designs and configurations and in use.
  • the DE 102009052531 A1 a machine press of the generic type.
  • a hydraulic system dedicated to a press such as a baler, in which a press ram is associated with a main press cylinder having a primary side for generating pressing force and means for returning the press ram are.
  • the device for returning the press ram is operated from a (second) open hydraulic circuit, from which also a pressure booster is operated, by means of which with the primary side of the main pressure cylinder in communication (first) closed hydraulic circuit kept under constant pressure becomes.
  • US Pat. No. 3,669,151-A1 describes a hydraulic system with a cylinder reservoir in which there is a base pressure above the ambient pressure.
  • the voriegende invention is directed to provide optimized in terms of essential practical aspects machine press of the generic type, which is so far in particular by aspects of the size and structural complexity - and thus the production costs - goes.
  • high-pressure gas storage can make do with a fraction of that size, which according to the DE 102009052531 A1 having provided pressure accumulator. Even the space required for the cylinder memory and the high-pressure gas storage combined is still significantly less than the space required for the pressure accumulator of the generic machine press, being added as a further advantage that by the possible in the present invention, spatial separation of cylinder storage and high-pressure gas storage increased flexibility in terms of use of space with the option of particularly compact executed hydraulic drive systems consists.
  • a hydraulic drive unit with a change volume in the order of 101 are kept constantly below a base pressure between 2 and 3 bar, said Such a case typically the Effective area of the hydraulic space on the piston unit by a factor between 50 and 150, more typically by a factor between 75 and 100 is greater than the effective area of the high-pressure gas storage on the piston unit.
  • a first preferred embodiment of the present invention is characterized in that the pressure fluid chamber - preferably centrally - is disposed within the piston unit, in such a way that it with respect to the cylindrical outer surface of him more or less deeply penetrating immersion tube with the high-pressure gas storage is in communication, is sealed.
  • the hydraulic space can be limited in particular by the complete end face of the piston unit.
  • the pressure fluid space (as a cylindrical cavity) may be provided within a projection provided on the piston unit which projects into the hydraulic space, the pressure fluid space being delimited by a piston element sealingly guided in said cylindrical cavity.
  • the pressure fluid space can optionally be designed annular.
  • the gas compressed in the high-pressure gas reservoir acts either directly on the piston unit can, or - by interposition of a liquid active medium - indirectly.
  • the gas of the high-pressure gas reservoir can be in the pressure fluid chamber of the cylinder reservoir, or a liquid pressure fluid which serves to transmit the pressure prevailing in the high-pressure gas reservoir to the pressurized fluid chamber and the corresponding pressurization of the piston unit.
  • the high pressure gas storage operates Yet another function of the machine press according to the invention, namely by being identical to a spring gas storage, which acts on a return stroke working space of the associated drive unit.
  • the drawing dispenses with the machine press as a whole, and is limited to the reproduction of the relevant for the present invention, on the respective drive system related aspects.
  • the closed hydraulic drive system acting on the upper tool carrier of the machine press to effect its downward movement comprises at least one hydraulic drive unit 1.
  • the respective drive system of each machine press comprises two of the illustrated drive units, so that will be described in the following description ,
  • Each of the two drive units 1 in turn comprises a hydraulic cylinder-piston unit 2 - it may optionally be provided more cylinder-piston units 2 - with a cylinder 3 and a guided therein piston 4, the piston rod 5 with the upper tool carrier of Machine press is firmly connected, and a hydraulic cylinder-piston unit 2 acted upon hydraulic unit 6 with a by a (reversible with respect to the direction of rotation) electric motor 7, designed as a reversible hydraulic pump eighth
  • the upper tool carrier is biased by means of a spring device in its upper end position.
  • the spring device is integrated into the hydraulic cylinder-piston units 2 of the two drive units 1 such that each of the piston rod working space 9 of the hydraulic cylinder-piston units 2 is hydraulically connected to an associated, under a gas bias external pressure accumulator 10.
  • the hydraulic drive of the machine press can be switched between a rapid traverse and a press pass.
  • the valve 18 is switched over, so that the hydraulic unit 6 acts in parallel on the piston working chamber 17 and the auxiliary working space 15.
  • the delivery of the hydraulic unit 6 is shut down and stopped, so that the upper tool carrier stops.
  • the tool then stops for a short time before the so-called “decompression stroke” begins, ie the slow, controlled lifting of the upper tool and opening of the press over a small stroke (eg 2-3 mm) by reversing the conveying direction of the hydraulic unit.
  • the valve 18 and the Nachsaugventil 19 are reversed, so that the piston 4 retracts under the action of the spring means.
  • the retraction of the piston 4 takes place in the Rapid traverse controlled (braked) by the auxiliary working space 15 is controlled and controlled emptied via the further operated with respect to the closing of the press reverse flow direction hydraulic unit 6.
  • the delivery rate of the hydraulic unit 6 can be changed over and adjusted.
  • a reservoir 20 is provided for the hydraulic fluid, which comprises a volume-variable hydraulic chamber (reservoir) 21, wherein the maximum volume difference of the reservoir 21 is tuned to the change volume of the hydraulic cylinder-piston unit 2.
  • the hydraulic fluid is clamped in the hydraulic system in such a way that it constantly and everywhere - and thus in particular in the reservoir 21 - at least one above ambient pressure base pressure prevails.
  • the reservoir 20 as a cylinder memory 22 with a by a cylinder 23 and a piston unit 24 slidably guided therein guided reservoir (hydraulic chamber) 21 executed.
  • the piston unit 24 is acted upon by a pressure fluid space 25 on its side which is functionally opposite the hydraulic space 21. This is in turn connected to a high-pressure gas storage 26 in conjunction.
  • the active surface 27 the pressure fluid space 25 on the piston unit 24 is small compared to the effective area 28 of the hydraulic space 21 on the piston unit 24.
  • the pressure fluid space 25 is arranged centrally within the piston unit 24. It is sealed against the cylindrical outer surface 29 of a more or less deeply penetrating immersion tube 30, which is in communication with the high-pressure gas storage 26.
  • the high-pressure gas storage 26 is designed as a hydraulic accumulator whose oil side is connected to the pressure fluid space 25.
  • On the back of the piston unit 24 prevails - via a corresponding ventilation opening 43 - ambient pressure.
  • the hydraulic space 21 is limited by the complete end face 28 of the piston unit 24.
  • Fig. 2 is the in Fig. 1 illustrated, described above hydraulic drive unit 1 modified such that a single high-pressure gas storage 31 is provided, the functions of the two according to the embodiment according to Fig. 1 provided high-pressure gas storage 10 and 26 combined in itself.
  • the high-pressure gas accumulator 31 is thus not only functionally assigned to the reservoir 20, but also part of the - hydropneumatically executed - spring device by also the piston rod working space (return stroke working space) 9 applied.
  • Fig. 3 is the in Fig. 2 illustrated above, the hydraulic drive unit 1 with respect to the reservoir 20 modified such that the pressure fluid chamber 25 is arranged as a cavity within a provided on the piston unit 24, this extending projection 32.
  • the projection 32 protrudes into the hydraulic chamber 21, which in turn has a corresponding extension into it.
  • the pressure fluid space 25 is delimited by a sealing piston 33 sealingly guided in said cavity.
  • the sealing piston 33 is here arranged on the front side of a dip tube 34, which passes through the (for this reason annular) pressure fluid chamber 25 and opposite the cylindrical outer surface 35 of the projection 32 of the piston unit 24 is sealed.
  • the high-pressure gas accumulator 31 is connected to the dip tube 34 and acted on this the pressure fluid space 25th
  • Fig. 4 is the in Fig. 1 illustrated, described above hydraulic drive unit 1 with respect to the reservoir 20 such that the high-pressure gas accumulator 36, due to the pressure bias the hydraulic system is constantly impressed at least above the ambient pressure base pressure, within the cylinder reservoir 22, namely disposed within the piston unit 24 ,
  • the pressurized fluid space 25 and the gas space of the high-pressure gas reservoir 36 thus merge into one another, ie they form - as one arranged in the piston unit 24 Cavity - a spatially and functionally inseparable unit.
  • An immersion pin 37 fixedly connected to the cylinder of the reservoir 20 protrudes more or less deeply into the cavity, depending on the position of the piston unit, which is sealed off from the cylindrical outer surface 38 of the immersion tap 37.
  • the active surface of the high-pressure gas reservoir 36 on the piston unit 24 corresponds in this embodiment to the end face 39 of the dip pin 37 opposite proportion of the cavity bounding end wall 40 of the piston unit.
  • a filling channel 41 is provided with a check valve 42 in order to compensate for a possible leakage of the pressure gas clamped in the cavity can.
  • the upper tool carrier of the machine press can be lowered at all at two different speeds, ie in an input and a press gear, and if so, that a combined hydraulic cylinder according to the illustrated construction is used for this purpose.
  • Various other known embodiments, which allow a two-stage lowering movement of the upper tool carrier, can also be used in the context of the present invention.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Engineering & Computer Science (AREA)
  • Press Drives And Press Lines (AREA)
  • Supply Devices, Intensifiers, Converters, And Telemotors (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Control Of Presses (AREA)
EP13728967.4A 2012-06-30 2013-06-07 Maschinenpresse Active EP2867009B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE201210013098 DE102012013098B4 (de) 2012-06-30 2012-06-30 Maschinenpresse
PCT/EP2013/001678 WO2014000858A1 (de) 2012-06-30 2013-06-07 Maschinenpresse

Publications (2)

Publication Number Publication Date
EP2867009A1 EP2867009A1 (de) 2015-05-06
EP2867009B1 true EP2867009B1 (de) 2016-05-11

Family

ID=48626400

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13728967.4A Active EP2867009B1 (de) 2012-06-30 2013-06-07 Maschinenpresse

Country Status (6)

Country Link
US (1) US10421246B2 (ja)
EP (1) EP2867009B1 (ja)
JP (1) JP6012863B2 (ja)
CN (1) CN104395064B (ja)
DE (1) DE102012013098B4 (ja)
WO (1) WO2014000858A1 (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024069384A1 (en) * 2022-09-27 2024-04-04 Automa By Magic S.R.L. Device for moving moulds and associated method

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5834132B2 (ja) * 2011-03-21 2015-12-16 楊双来 作業機械のジブの持ち上げシステム及び持ち上げ方法、並びに作業機械
DE102014005352B4 (de) * 2014-04-11 2016-03-10 Hoerbiger Automatisierungstechnik Holding Gmbh Maschinenpresse
DE102015211796A1 (de) * 2015-06-25 2016-12-29 Robert Bosch Gmbh Hydraulisches System zur Druckmittelversorgung eines Hydrozylinders mit drei getrennten druckmittelbeaufschlagbaren Wirkflächen und Verfahren zum Betreiben des hydraulischen Systems
DE102015011209B4 (de) * 2015-08-26 2021-03-18 Horst Baltschun Hydraulische Presse
DE202015106161U1 (de) 2015-11-13 2015-11-27 Hoerbiger Automatisierungstechnik Holding Gmbh Elektrohydraulische Antriebseinheit
DE102016118854A1 (de) 2016-10-05 2018-04-05 Hoerbiger Automatisierungstechnik Holding Gmbh Elektrohydraulische Antriebseinheit
DE102016118853B3 (de) 2016-10-05 2017-10-26 Hoerbiger Automatisierungstechnik Holding Gmbh Elektrohydraulische Antriebseinheit
DE102017103091B4 (de) 2017-02-15 2019-05-16 Hoerbiger Automatisierungstechnik Holding Gmbh Maschinenpresse
US10920795B2 (en) 2018-11-23 2021-02-16 The Boeing Company Bootstrap hydraulic reservoir
DE102021123910A1 (de) 2021-09-15 2023-03-16 HMS - Hybrid Motion Solutions GmbH Hydraulisches Antriebssystem mit einer 4Q Pumpeneinheit
DE102021123914A1 (de) 2021-09-15 2023-03-16 HMS - Hybrid Motion Solutions GmbH Hydraulisches Antriebssystem mit einer 2x2Q Pumpeneinheit
US20230373714A1 (en) * 2022-05-23 2023-11-23 Ab Närpes Trä & Metall - Oy Närpiön Puu Ja Metalli Refuse compression apparatus and a method for operating refuse compression apparatus

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JP5286365B2 (ja) * 2007-11-15 2013-09-11 ヘルビガー アウトマティジールングステヒニーク ホールディング ゲゼルシャフト ミット ベシュレンクテル ハフツング 電動油圧昇圧機
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024069384A1 (en) * 2022-09-27 2024-04-04 Automa By Magic S.R.L. Device for moving moulds and associated method

Also Published As

Publication number Publication date
US20150107466A1 (en) 2015-04-23
JP2015522422A (ja) 2015-08-06
DE102012013098A1 (de) 2014-01-02
CN104395064B (zh) 2017-05-24
DE102012013098B4 (de) 2014-08-07
US10421246B2 (en) 2019-09-24
WO2014000858A1 (de) 2014-01-03
EP2867009A1 (de) 2015-05-06
JP6012863B2 (ja) 2016-10-25
CN104395064A (zh) 2015-03-04

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