[go: up one dir, main page]

EP0629455A1 - Entraînement principal pour press à refouler - Google Patents

Entraînement principal pour press à refouler Download PDF

Info

Publication number
EP0629455A1
EP0629455A1 EP94109153A EP94109153A EP0629455A1 EP 0629455 A1 EP0629455 A1 EP 0629455A1 EP 94109153 A EP94109153 A EP 94109153A EP 94109153 A EP94109153 A EP 94109153A EP 0629455 A1 EP0629455 A1 EP 0629455A1
Authority
EP
European Patent Office
Prior art keywords
press
pressure medium
working
pumps
upsetting
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.)
Granted
Application number
EP94109153A
Other languages
German (de)
English (en)
Other versions
EP0629455B1 (fr
Inventor
Berthold Hild
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.)
SMS Siemag AG
Original Assignee
SMS Schloemann Siemag AG
Schloemann Siemag AG
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 SMS Schloemann Siemag AG, Schloemann Siemag AG filed Critical SMS Schloemann Siemag AG
Publication of EP0629455A1 publication Critical patent/EP0629455A1/fr
Application granted granted Critical
Publication of EP0629455B1 publication Critical patent/EP0629455B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B11/00—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses
    • B30B11/22—Extrusion presses; Dies therefor
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B15/0035—Forging or pressing devices as units
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J9/00—Forging presses
    • B21J9/10—Drives for forging presses
    • B21J9/12—Drives for forging presses operated by hydraulic or liquid pressure
    • 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

Definitions

  • the invention relates to a method for operating the pressing tools provided with hydraulic reduction drives for upsetting presses for rolling stock and to an upsetting press as described in the preamble of claim 3.
  • EP-PS 0 112 516 proposes e.g. already hydraulic reduction drives that directly generate linear movements, take up less space and are cheaper to produce. However, in order to be able to provide the power required for the reduction, relatively large, powerful and correspondingly energy-consuming pumps must be installed here.
  • the invention has for its object to further develop the generic method for operating the reduction drive of an upsetting press and the reduction drive itself so that it is possible to work with very inexpensive, relatively small and low-energy pumps.
  • the arrangement of a pressure medium accumulator in the feed circuit means that the large pressure medium volumes from the press cylinder, which are not required for feeding the pumps and return stroke cylinders during the reverse stroke, are no longer drained into a tank unused, but are stored in the pressure medium accumulator, so that they can then be used during the feed of the press cylinders to become.
  • the adjustment speed of the pressure cylinder can be increased during the forward stroke of the press cylinder at a certain volume flow given by the working pumps.
  • the increase in speed is only achieved for the idle stroke of the press cylinder, since the pressure of the pressure medium reservoir is not sufficient to make a significant contribution to the press stroke.
  • the work pumps therefore do not need to be designed for the large volume flows that are required for rapid advancement of the press cylinder in the idle stroke and can therefore have smaller dimensions.
  • the pump can also be equipped with a lower nominal output, since, due to the pressure medium accumulator, it is only operated in short-term operation.
  • One half of an upsetting press 1 is shown in each of the figures.
  • the second half, not shown, is in each case arranged in mirror image of the first half.
  • Both halves are connected to one another via a synchronization control 2.
  • the upsetting press 1 has a press tool 3 which is connected to a press cylinder 4 and two return stroke cylinders 5, 5 '. Furthermore, a feed cylinder 6 is shown which drives the pressing tool 3 at the speed of the rolling stock in the longitudinal direction of the rolling stock during flying operation.
  • the pistons of the cylinders 4, 5, 5 ' are designed as plungers, the effective piston area of the press cylinder 4 being larger than the effective piston area of the two return stroke cylinders 5, 5'.
  • the press cylinder 4 is connected to the return stroke cylinders 5, 5 'via working pumps 7, 7', 7 '', 7 '' '.
  • a piston accumulator is provided as the pressure medium accumulator 8 between the working pumps 7 to 7 '''and the press cylinder 4.
  • Pressure accumulators 9 are assigned to the piston accumulator and contain a gas as a pressure cushion.
  • the pressure medium reservoir 8 is connected to the feed circuit 11 via a reservoir metering valve 10.
  • the storage metering valve 10 is regulated depending on the pressure of the press cylinder and, if necessary, time-dependent in its way.
  • a pump metering valve 12 which is also controlled as a function of time and pressure, relieves the pressure on the feed circuit 10 via a cooler 13 to the tank 14 be fed.
  • the synchronism of the two press halves can be controlled by means of a control device 2 (not shown) via a pump 16 and a compensating circuit 17.
  • the pressure on the press cylinder 4 rises If this pressure is the pressure of the pressure medium accumulator 8, the accumulator metering valve is closed and the working pumps 7 to 7 '''provide, with a correspondingly reduced speed, only for the press stroke. With the upset press 1 open, the pressure medium reservoir 8 can also be filled by the working pumps 7 to 7 '''before the first working stroke.
  • the drive according to FIG. 2 is very similar to that according to FIG. 1, so that only the differences are mentioned here.
  • the working pumps 7 to 7 ′′ ′′ hydraulic motors 18 to 18 ′′ ′′ are connected in parallel.
  • the hydraulic motors 18 to 18 ′′ ′′ like the pump metering valve 12 according to FIG. 1, are connected to the feed circuit 11 between the press cylinder 4 and the working pumps 7 to 7 ′′ ′′.
  • the hydraulic motors 18 to 18 '' ' are driven by the excess pressure medium when the press cylinder 4 is pushed back. Since they are coupled to the working pumps 7 to 7 '' ', their drive motors are relieved, which results in further energy savings.
  • FIG. 3 is also very similar to that of FIG. 1. Here, however, an open circle is used.
  • the working pumps 19 to 19 '''are also adjustable, but not adjustable above zero; ie they only promote in one direction.
  • the pumps 19 to 19 '''are connected to the tank 14 and on the other hand via switching valves 20, 21 to the return stroke circuit and the feed circuit 11.
  • a drain valve 22 is provided in the return circuit, which opens in order to discharge the pressure medium ejected from the return stroke cylinders 5, 5 'into the tank 14 when the press cylinder 4 is advanced.
  • the switching valves 20, 21 are locked against each other, so that only the press cylinder 4 or the push-back cylinders 5, 5 'are acted upon by pressure medium.
  • the working pumps 19 to 19 ′′ ′′ become zero adjusted so that the switching valves 20, 21 are not loaded too heavily.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Press Drives And Press Lines (AREA)
  • Control Of Presses (AREA)
  • Forging (AREA)
  • Metal Rolling (AREA)
  • Vending Machines For Individual Products (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)
  • Mechanical Operated Clutches (AREA)
EP94109153A 1993-06-18 1994-06-15 Entraînement principal pour press à refouler Expired - Lifetime EP0629455B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4320213A DE4320213A1 (de) 1993-06-18 1993-06-18 Stauchpressenhauptantrieb
DE4320213 1993-06-18

Publications (2)

Publication Number Publication Date
EP0629455A1 true EP0629455A1 (fr) 1994-12-21
EP0629455B1 EP0629455B1 (fr) 1997-02-12

Family

ID=6490623

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94109153A Expired - Lifetime EP0629455B1 (fr) 1993-06-18 1994-06-15 Entraînement principal pour press à refouler

Country Status (9)

Country Link
US (1) US5551276A (fr)
EP (1) EP0629455B1 (fr)
JP (1) JP3459297B2 (fr)
KR (1) KR100326648B1 (fr)
CN (1) CN1057031C (fr)
AT (1) ATE148840T1 (fr)
DE (2) DE4320213A1 (fr)
FI (1) FI105896B (fr)
TW (1) TW241212B (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6054076A (en) * 1998-04-02 2000-04-25 Graham Engineering Corporation Accumulator head blow molding machine and method
US6120712A (en) * 1998-05-07 2000-09-19 Graham Engineering Corporation Accumulator head blow molding machine and method
CN102078911A (zh) * 2010-12-06 2011-06-01 中国重型机械研究院有限公司 快锻油压机快速回程系统
CN102699249A (zh) * 2012-05-28 2012-10-03 天津市天锻压力机有限公司 一种带有蓄能器的快锻压机控制系统及控制方法

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2001278651A1 (en) * 2000-09-20 2002-04-02 Laeis Bucher Gmbh Controller for a hydraulic press and method for the operation thereof
KR100790842B1 (ko) * 2007-03-30 2008-01-03 장세창 주걱 수납대
CN103286251A (zh) * 2013-05-17 2013-09-11 天津市天锻压力机有限公司 锻造液压机的供油系统
ITRE20140004U1 (it) * 2014-03-04 2015-09-04 Bonfiglioli Cesare Macchina compattatrice di rottami
DE102015110768A1 (de) 2015-07-03 2017-01-05 Sms Group Gmbh Ölhydraulische Strangpresse sowie Verfahren zum Betrieb einer derartigen Strangpresse
CN108421945A (zh) * 2018-04-10 2018-08-21 中科聚信洁能热锻装备研发股份有限公司 一种连续增压供油的锻造液压机
CN108663150B (zh) * 2018-05-10 2024-07-30 温州大学 一种新型冷镦力测力方法以及运用该方法的测力装置
IT201800007019A1 (it) * 2018-07-09 2020-01-09 Impianto fluidodinamico per l'azionamento controllato della slitta di una pressa

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE559440A (fr) * 1956-07-23
FR2243038A1 (fr) * 1973-09-10 1975-04-04 Schirmer & Plate
US4125010A (en) * 1976-02-26 1978-11-14 Smg-Suddeutsche Maschinenbau Gmbh Hydraulic press
GB2016980A (en) * 1978-01-31 1979-10-03 B & G Hydraulics Ltd Apparatus for operating hydraulic rams
US4206628A (en) * 1979-03-16 1980-06-10 The Continental Group, Inc. Press with hydraulic load transferring mechanism
EP0116024A1 (fr) * 1983-02-03 1984-08-15 Göran Palmers Dispositif de récupération d'énergie pour machines entraîneés hydrauliquement
DE9116370U1 (de) * 1991-09-27 1992-12-03 Pahnke Engineering GmbH & Co KG, 4000 Düsseldorf Vorrichtung zum Betreiben einer Pressenanlage

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1266111B (de) * 1958-11-25 1968-04-11 Schloemann Ag Steuerung einer hydraulischen Freiformschmiedepresse
JPS5938067B2 (ja) * 1976-11-09 1984-09-13 三菱重工業株式会社 型締シリンダへの圧力切換弁用圧力供給装置
DE2747548C2 (de) * 1977-10-22 1986-04-17 Thyssen Industrie Ag, 4300 Essen Presse mit Regelkreis
DE2852303A1 (de) * 1978-12-02 1980-06-04 Schloemann Siemag Ag Schmiedepresse, insbesondere freiform- schmiedepresse, in unterflurbauart
DE3376530D1 (en) * 1982-12-01 1988-06-16 Hitachi Ltd Press apparatus for reducing slab width
JPH05104299A (ja) * 1991-10-16 1993-04-27 Kawasaki Yukou Kk 液圧プレス等の油圧制御方法
DE4210504A1 (de) * 1992-03-31 1993-10-07 Pahnke Eng Gmbh & Co Kg Antrieb zur Hubverlagerung für Umformmaschinen

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE559440A (fr) * 1956-07-23
FR2243038A1 (fr) * 1973-09-10 1975-04-04 Schirmer & Plate
US4125010A (en) * 1976-02-26 1978-11-14 Smg-Suddeutsche Maschinenbau Gmbh Hydraulic press
GB2016980A (en) * 1978-01-31 1979-10-03 B & G Hydraulics Ltd Apparatus for operating hydraulic rams
US4206628A (en) * 1979-03-16 1980-06-10 The Continental Group, Inc. Press with hydraulic load transferring mechanism
EP0116024A1 (fr) * 1983-02-03 1984-08-15 Göran Palmers Dispositif de récupération d'énergie pour machines entraîneés hydrauliquement
DE9116370U1 (de) * 1991-09-27 1992-12-03 Pahnke Engineering GmbH & Co KG, 4000 Düsseldorf Vorrichtung zum Betreiben einer Pressenanlage

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6054076A (en) * 1998-04-02 2000-04-25 Graham Engineering Corporation Accumulator head blow molding machine and method
US6120712A (en) * 1998-05-07 2000-09-19 Graham Engineering Corporation Accumulator head blow molding machine and method
CN102078911A (zh) * 2010-12-06 2011-06-01 中国重型机械研究院有限公司 快锻油压机快速回程系统
CN102699249A (zh) * 2012-05-28 2012-10-03 天津市天锻压力机有限公司 一种带有蓄能器的快锻压机控制系统及控制方法

Also Published As

Publication number Publication date
FI942867L (fi) 1994-12-19
CN1057031C (zh) 2000-10-04
KR950000373A (ko) 1995-01-03
JP3459297B2 (ja) 2003-10-20
FI942867A0 (fi) 1994-06-16
EP0629455B1 (fr) 1997-02-12
JPH07144205A (ja) 1995-06-06
ATE148840T1 (de) 1997-02-15
DE4320213A1 (de) 1994-12-22
KR100326648B1 (ko) 2002-06-20
US5551276A (en) 1996-09-03
TW241212B (fr) 1995-02-21
CN1098343A (zh) 1995-02-08
DE59401791D1 (de) 1997-03-27
FI105896B (fi) 2000-10-31

Similar Documents

Publication Publication Date Title
EP0615837B1 (fr) Procédé de commande d'entraînement d'une presse hydraulique et dispositif pour la mise en oeuvre du procédé
EP1318906B1 (fr) Dispositif de commande pour une presse hydraulique et procede pour son fonctionnement
DE3238111C1 (de) Hydraulikeinrichtung fuer die Formschliesseinheit einer Kunststoff-Spritzgiessmaschine
EP2480405B1 (fr) Entrainement hydraulique precontraint dote d'une pompe a vitesse variable
EP0641644A1 (fr) Procédé de commande d'entraînement d'une presse hydraulique et dispositif pour la mise en oeuvre du procédé
EP1274526B1 (fr) Procede et systeme d'entrainement destines a la commande/regulation du mouvement lineaire de compression/coulee
EP0972631B1 (fr) Entraínement hydraulique pour une presse
DE102017106449A1 (de) Mehrstufige Fügevorrichtung und Fügeverfahren dafür
DE4331302A1 (de) Presse
EP0629455B1 (fr) Entraînement principal pour press à refouler
EP0692327B1 (fr) Entraínement pour presses hydrauliques à grand nombre de cycles
EP1063028B2 (fr) Presse pour hydroformage extérieur
DE1907077A1 (de) Presse und Verfahren zum Tiefziehen von Blechrohlingen zu Behaeltern
DE3203787A1 (de) Werkstueckauswerfvorrichtung
DE69420716T2 (de) Vorrichtung in einer hydraulischen presse
DE4218952B4 (de) Hydraulischer Antrieb für eine Presse, insbesondere für eine Blechformpresse
DE2544794B2 (de) Antrieb einer hydraulischen Presse
DE8021267U1 (de) Lastausgleichsvorrichtung fuer pressenwerkzeuge
EP3056291B1 (fr) Presse dotée d'un amortisseur de choc de coupe
DE3216563C1 (de) Ziehpresse,insbesondere Tiefziehpresse
DE2345527A1 (de) Horizontale schnellschmiedepresse
WO2005021253A2 (fr) Presse hydraulique
DE3112393A1 (de) "hydraulische presse und ihre verwendung in einem verfahren zur herstellung von elementen, die mindestens zwei unterschiedlichen fertigungsvorgaengen unterworfen werden"
DE3017406A1 (de) Ziehpresse, insbesondere tiefziehpresse
EP3774316B1 (fr) Entraînement de presse à récupération d'énergie

Legal Events

Date Code Title Description
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

17P Request for examination filed

Effective date: 19940707

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE DE FR GB IT NL SE

17Q First examination report despatched

Effective date: 19950906

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE DE FR GB IT NL SE

REF Corresponds to:

Ref document number: 148840

Country of ref document: AT

Date of ref document: 19970215

Kind code of ref document: T

REF Corresponds to:

Ref document number: 59401791

Country of ref document: DE

Date of ref document: 19970327

ITF It: translation for a ep patent filed
NLR4 Nl: receipt of corrected translation in the netherlands language at the initiative of the proprietor of the patent
GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 19970513

ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 20010531

Year of fee payment: 8

Ref country code: FR

Payment date: 20010531

Year of fee payment: 8

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 20010618

Year of fee payment: 8

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 20010621

Year of fee payment: 8

REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20020616

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20020630

BERE Be: lapsed

Owner name: SCHLOEMANN-SIEMAG A.G. *SMS

Effective date: 20020630

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20030101

EUG Se: european patent has lapsed
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20030228

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee

Effective date: 20030101

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20090623

Year of fee payment: 16

Ref country code: AT

Payment date: 20090615

Year of fee payment: 16

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20090618

Year of fee payment: 16

Ref country code: DE

Payment date: 20090622

Year of fee payment: 16

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20100615

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100615

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20110101

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100615

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100615