EP1445042A1 - Tête de travail à poinçons multiples pour une machine à poinçonner des tôles à commande numérique - Google Patents

Tête de travail à poinçons multiples pour une machine à poinçonner des tôles à commande numérique Download PDF

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Publication number
EP1445042A1
EP1445042A1 EP04075317A EP04075317A EP1445042A1 EP 1445042 A1 EP1445042 A1 EP 1445042A1 EP 04075317 A EP04075317 A EP 04075317A EP 04075317 A EP04075317 A EP 04075317A EP 1445042 A1 EP1445042 A1 EP 1445042A1
Authority
EP
European Patent Office
Prior art keywords
pistons
punches
multipress
operating head
punching
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
EP04075317A
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German (de)
English (en)
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EP1445042B1 (fr
EP1445042B8 (fr
Inventor
Andrea Spazio
Ruggero Battaglia
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.)
Salvagnini Italia SpA
Original Assignee
Salvagnini Italia SpA
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Filing date
Publication date
Application filed by Salvagnini Italia SpA filed Critical Salvagnini Italia SpA
Publication of EP1445042A1 publication Critical patent/EP1445042A1/fr
Publication of EP1445042B1 publication Critical patent/EP1445042B1/fr
Application granted granted Critical
Publication of EP1445042B8 publication Critical patent/EP1445042B8/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B21D28/00—Shaping by press-cutting; Perforating
    • B21D28/24—Perforating, i.e. punching holes
    • B21D28/26—Perforating, i.e. punching holes in sheets or flat parts
    • 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
    • B21D28/00—Shaping by press-cutting; Perforating
    • B21D28/24—Perforating, i.e. punching holes
    • B21D28/246—Selection of punches

Definitions

  • the present invention concerns a multipress operating head for sheet metal punching machine with numerical control.
  • Punching machines with multipress head are known, which are made up of a plurality of hydraulic presses, close to each other, each one of which controls the vertical motion of a single punch.
  • the main advantage of this constructive system resides in the fact that all the different punches that must be used in sequence in order to accompish the punching working of a piece are available and ready to operate, without need to carry out any tool change operation during the productive cycle; an improved productivity and precision of the machine is thus obtained, because the operations of tool substitution are avoided during the cycle and the total length of the distance that the piece, displaced by a manipulator along two directions perpendicular to each other, must cover in order to allow the execution of all the workings required on its surface is reduced.
  • the main disadvantage of the current embodiment of this constructive system resides in the fact that the presses cover a same vertical stroke, independent from the type of working and from the thickness of the material that must be worked, reason for which the vertical stroke of descent and the relative time of execution of the single punchings are as a result often excessive as compared with what would be strictly necessary, and this is to the prejudice of the productivity of the machine.
  • the maximum frequency of repetition of the punching movements is limited and inversely proportional to the working stroke of the punch (that is pre-established during the designing of the machine).
  • tower-type punching machines whose commonly adopted constructive system provides for the presence of two discs with vertical axis, one above and one under the sheet, which bear on their periphery, housed in appropriate housings, one the punches and the other one the dies.
  • the press that controls the descent of the punch is a single one, located in a fixed position on the edge of the structure. Appropriate controls make the two discs rotate in synchronous way, by taking under the ram of the piston of the single hydraulic press, each time, the punch and the relative die that are necessary to the execution of the working; simultaneously the manipulator brings the sheet in the correct position as regards the punch, in order to allow the execution of the holes and of the other workings.
  • the control of the piston is servo-hydraulic, with continuous measurement of the vertical position of the piston along its own stroke.
  • the resulting advantage is that punching frequencies higher than the ones obtained with the operating head of the punching press with multipress head can be obtained.
  • Such advantage is achieved only by using punches for which the action of extraction of the cutter from the sheet is done due to the effect of a spring (or of a group of springs) inserted in opportune way in the cartridge that holds the same tool in guide and in position in the tool holder disc.
  • the disadvantage is the time for the tool change that adds up to the one for the execution of the punchings and to the ones for the movement of the sheet between one punching and the other one.
  • the punches can be both with extraction controlled by springs, and with extraction controlled mechanically; in this second case an adjustment of the head span is effectively provided, that is possible in a simple way because it consists in positioning in height the cartridge of the only punch that is mounted on the edge of the operating head.
  • object of the present invention is to provide a multipress head for punching machine that allows to overcome the current disadvantages of the multipress head, while conserving at the same time the positive characteristics intrinsic to the peculiar architecture.
  • a multipress head comprising a plurality of hydraulic presses, close to each other and each one made up of a hydraulic cylinder in which a respective piston slides, and a plurality of punches driven by respective pistons of said hydraulic presses, characterised in that:
  • the time for the hydraulic pre-selection of the piston that one wants to operate, and also the time for the possible simultaneous commutation necessary to take the section of the selector disc above the punch, is much smaller than the time for the tool change of the other cited systems, and they are almost always carried out simultaneously with the movement for the repositioning of the piece to be worked by the manipulator.
  • a multipress head 4 comprising a plurality of hydraulic presses 1 is shown that is made up of a cylinder 2 within which a piston 3 slides that has, in its upper part, a stem 16 that proj ects out of a block 17 in which the housings of the cylinders 2 are obtained; the stem 16 has an arm 18 that rests on a mobile equipment 19 (biased in rest position by a spring 30 or a similar elastic mean) of a position transducer 20.
  • punching tools 6, hereinafter simply called punches which are vertically guided and withheld in position in the horizontal plane by an appropriate tool holder plate 21 integral with the head 4, extractable for the operations of preparation of the tooling out of the working cycles of the machine.
  • each press 1 one or more punches 6 are located, some of which are grouped in sets and selectable with a mechanical selector 22 made up of a disc 7 mounted onto the lower end of the piston 3, put in rotation and positioned by an appropriate motorization with gear train (not shown), which disc 7 has a sector 8 with increased thickness.
  • the positioning of the punches 6 is provided as a function of their radial volume; in particular, usually the punches 6 having large dimensions are controlled each one by a piston 3, whereas the ones with small dimensions can be grouped in sets with two or more, controlled by a single piston 3 through a mechanical selector 22.
  • a die holder plate 31 is positioned which bears a plurality of dies 29 operatingly associated with respective punches 6.
  • the position transducer 20 detects the position of the piston 3 by means of the stem 16 and the arm 18 that moves the mobile equipment 19 of the transducer 20 thereby allowing the continuous measurement of the vertical position of the piston 3.
  • a position transducer 20 is positioned every four-six cylinders 2, so that the position measurement is taken just of the lowest piston among the ones that refer to the transducer 20, that is the piston 3 that was preventively put in communication with the servovalve 12 through its own pre-selection valve 13.
  • This solution (a single position transducer 20 serving several pistons 3) is described in detail in a copending patent application of the same Applicant and it is herein applied in repeated way to several sets of pistons 3.
  • springs 14-15 associated with the fact that the flange 24 is only in contact with the piston 3, allows to carry out the extraction by using the lower portion of the working stroke of the piston and the consequent compression of the two springs.
  • the state of compression of the spring 14 thrusts upward the punch 6 connected with the stem 27 that transmits the motion to the piston 3 by means of the terminal flange 24, the state of compression of the spring 15 brings the cup 28 back to the rest position ( Figure 4-5).
  • the advantage of said extraction system resides in that it does not need any adjustment of the working span of the head, it allows to provide the desired improvement of the working cycle, thus combining the advantages of the multipress head with the ones of the numerical control of the vertical position of the punch 6 and the amplitude of its usable stroke.
  • the time for the hydraulic pre-selection of the piston 3 that one wants to operate, as also the time for the possible simultaneous commutation necessary to take the sector 8 of the selector disc 7 above the desired punch, is much smaller than the times for the tool change of the other cited systems, and takes place almost always simultaneously with the movement for the repositioning of the piece 26 to be worked by the manipulator.
  • a similar concept can be applied also to possible punches that operate from the bottom upward, which work in combination with respective punches that descend from the top, cooperating to carry out plastic deformation workings in the so-called the "double effect" cycles.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Press Drives And Press Lines (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)
  • Punching Or Piercing (AREA)
EP04075317A 2003-02-07 2004-02-03 Tête de travail à poinçons multiples pour une machine à poinçonner des tôles à commande numérique Expired - Lifetime EP1445042B8 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT000218A ITMI20030218A1 (it) 2003-02-07 2003-02-07 Testa operatrice multipressa per macchina punzonatrice a controllo numerico per fogli di lamiera
ITMI20030218 2003-02-07

Publications (3)

Publication Number Publication Date
EP1445042A1 true EP1445042A1 (fr) 2004-08-11
EP1445042B1 EP1445042B1 (fr) 2006-04-26
EP1445042B8 EP1445042B8 (fr) 2006-08-16

Family

ID=32652468

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04075317A Expired - Lifetime EP1445042B8 (fr) 2003-02-07 2004-02-03 Tête de travail à poinçons multiples pour une machine à poinçonner des tôles à commande numérique

Country Status (6)

Country Link
EP (1) EP1445042B8 (fr)
AT (1) ATE324200T1 (fr)
DE (1) DE602004000696T2 (fr)
DK (1) DK1445042T3 (fr)
ES (1) ES2262086T3 (fr)
IT (1) ITMI20030218A1 (fr)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1759782A1 (fr) * 2005-09-02 2007-03-07 Arcelor Steel Service Centres Installation et procédé de travail d'un lot de flans
WO2009012028A1 (fr) * 2007-07-17 2009-01-22 Wilson Tool International Inc. Outillage à entraînements multiples
EP2153915A1 (fr) * 2007-05-22 2010-02-17 Ones CO., LTD. Matrice de perforation de métal en plaque mince et appareil de perforation de métal en plaque mince pourvu de la matrice
EP2177290A1 (fr) 2008-10-18 2010-04-21 Trumpf Werkzeugmaschinen GmbH + Co. KG Procédé de définition d'un ensemble d'outil de poinçonnage destiné au traitement par poinçonnage de pièces usinées ainsi que machine de poinçonnage dotée d'un tel ensemble d'outil de poinçonnage
WO2011154832A1 (fr) 2010-06-08 2011-12-15 Cosma S.R.L. Machine à poinçonner pour tôles
ITVE20130049A1 (it) * 2013-09-20 2015-03-21 Dallan Spa Testata di punzonatura per macchine punzonatrici.-
EP2954962A1 (fr) 2014-06-13 2015-12-16 SALVAGNINI ITALIA S.p.A. Appareil de poinçonnage
WO2016016807A1 (fr) * 2014-07-29 2016-02-04 Salvagnini Italia S.P.A. Appareil de poinçonnage
WO2020070614A1 (fr) * 2018-10-01 2020-04-09 Salvagnini Italia S.P.A. Système d'entraînement hydraulique pour appareil de poinçonnage
WO2020070617A1 (fr) * 2018-10-01 2020-04-09 Salvagnini Italia S.P.A. Machine de façonnage de tôle
IT201900010191A1 (it) * 2019-06-26 2020-12-26 Salvagnini Italia Spa Macchina per lavorare lamiere metalliche
RU2775455C1 (ru) * 2018-10-01 2022-07-01 Сальваньини Италия С.П.А. Система гидравлического привода для пробивного устройства

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110802150B (zh) * 2019-11-28 2020-11-03 浦江吉树机械科技有限公司 一种金属垫片冲压设备

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4391123A (en) * 1979-09-12 1983-07-05 Salvagnini Transferica S.P.A. Automatic punching machine
EP0140373A2 (fr) * 1983-10-31 1985-05-08 Dietz NC-Werkzeugsysteme Poinçonneuse et jeu d'outils pour poinçonneuses
EP0183298A2 (fr) * 1984-11-28 1986-06-04 SALVAGNINI TRANSFERICA S.p.A. Presse à découper équipée d'un nombre d'outils de découpage au choix
US4700441A (en) * 1984-10-12 1987-10-20 Amada Company, Limited Tapping machine
US5301585A (en) * 1991-05-27 1994-04-12 Amada Sonoike Co., Ltd. Punch pressing machine

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4391123A (en) * 1979-09-12 1983-07-05 Salvagnini Transferica S.P.A. Automatic punching machine
EP0140373A2 (fr) * 1983-10-31 1985-05-08 Dietz NC-Werkzeugsysteme Poinçonneuse et jeu d'outils pour poinçonneuses
US4700441A (en) * 1984-10-12 1987-10-20 Amada Company, Limited Tapping machine
EP0183298A2 (fr) * 1984-11-28 1986-06-04 SALVAGNINI TRANSFERICA S.p.A. Presse à découper équipée d'un nombre d'outils de découpage au choix
US5301585A (en) * 1991-05-27 1994-04-12 Amada Sonoike Co., Ltd. Punch pressing machine

Cited By (32)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007026079A1 (fr) * 2005-09-02 2007-03-08 Arcelor Steel Service Centres Installation et procedes de travail d'un lot de flans
EP1759782A1 (fr) * 2005-09-02 2007-03-07 Arcelor Steel Service Centres Installation et procédé de travail d'un lot de flans
EP2153915A1 (fr) * 2007-05-22 2010-02-17 Ones CO., LTD. Matrice de perforation de métal en plaque mince et appareil de perforation de métal en plaque mince pourvu de la matrice
EP2153915A4 (fr) * 2007-05-22 2013-08-28 Ones Co Ltd Matrice de perforation de métal en plaque mince et appareil de perforation de métal en plaque mince pourvu de la matrice
WO2009012028A1 (fr) * 2007-07-17 2009-01-22 Wilson Tool International Inc. Outillage à entraînements multiples
US8001823B2 (en) 2007-07-17 2011-08-23 Wilson Tool International Inc. Multi-drive tooling
US9573182B2 (en) 2008-10-18 2017-02-21 Trumpf Werkzeugmaschinen Gmbh + Co. Kg Reprocessed dies
EP2177290A1 (fr) 2008-10-18 2010-04-21 Trumpf Werkzeugmaschinen GmbH + Co. KG Procédé de définition d'un ensemble d'outil de poinçonnage destiné au traitement par poinçonnage de pièces usinées ainsi que machine de poinçonnage dotée d'un tel ensemble d'outil de poinçonnage
US8701532B2 (en) 2008-10-18 2014-04-22 Trumpf Werkzeugmaschinen Gmbh + Co. Kg Reprocessed dies
WO2011154832A1 (fr) 2010-06-08 2011-12-15 Cosma S.R.L. Machine à poinçonner pour tôles
ITVE20130049A1 (it) * 2013-09-20 2015-03-21 Dallan Spa Testata di punzonatura per macchine punzonatrici.-
EP2853318A1 (fr) * 2013-09-20 2015-04-01 Dallan S.P.A. Tête de poinçon pour machines de poinçonnage
US9713834B2 (en) 2014-06-13 2017-07-25 Salvagnini Italia S.P.A. Punching apparatus
RU2663508C2 (ru) * 2014-06-13 2018-08-07 Сальваньини Италия С.П.А. Пробивочное устройство
WO2015189408A1 (fr) 2014-06-13 2015-12-17 Salvagnini Italia S.P.A. Appareil de poinçonnage
JP6149174B1 (ja) * 2014-06-13 2017-06-14 サルヴァニーニ イタリア エッセ．ピ．ア．ＳＡＬＶＡＧＮＩＮＩ ＩＴＡＬＩＡ Ｓ．ｐ．Ａ． パンチング装置
EP2954962A1 (fr) 2014-06-13 2015-12-16 SALVAGNINI ITALIA S.p.A. Appareil de poinçonnage
JP2017521257A (ja) * 2014-06-13 2017-08-03 サルヴァニーニ イタリア エッセ．ピ．ア．ＳＡＬＶＡＧＮＩＮＩ ＩＴＡＬＩＡ Ｓ．ｐ．Ａ． パンチング装置
RU2674595C2 (ru) * 2014-07-29 2018-12-11 Сальваньини Италия С.П.А. Пробивочное устройство
US9878363B2 (en) 2014-07-29 2018-01-30 Salvagnini Italia S.P.A. Punching apparatus
JP2017522189A (ja) * 2014-07-29 2017-08-10 サルヴァニーニ イタリア エッセ．ピ．ア．ＳＡＬＶＡＧＮＩＮＩ ＩＴＡＬＩＡ Ｓ．ｐ．Ａ． パンチング装置
WO2016016807A1 (fr) * 2014-07-29 2016-02-04 Salvagnini Italia S.P.A. Appareil de poinçonnage
CN112770853A (zh) * 2018-10-01 2021-05-07 萨尔瓦尼尼意大利股份公司 金属薄片加工机器
WO2020070617A1 (fr) * 2018-10-01 2020-04-09 Salvagnini Italia S.P.A. Machine de façonnage de tôle
WO2020070614A1 (fr) * 2018-10-01 2020-04-09 Salvagnini Italia S.P.A. Système d'entraînement hydraulique pour appareil de poinçonnage
CN112789125A (zh) * 2018-10-01 2021-05-11 萨尔瓦尼尼意大利股份公司 冲孔设备的液压驱动系统
JP2022502263A (ja) * 2018-10-01 2022-01-11 サルヴァニーニ イタリア エッセ.ピ.ア.SALVAGNINI ITALIA S.p.A. 打抜き装置のための油圧運転システム
JP2022504117A (ja) * 2018-10-01 2022-01-13 サルヴァニーニ イタリア エッセ．ピ．ア． 薄板金加工機械
JP7048822B2 (ja) 2018-10-01 2022-04-05 サルヴァニーニ イタリア エッセ．ピ．ア． 薄板金加工機械
JP7048821B2 (ja) 2018-10-01 2022-04-05 サルヴァニーニ イタリア エッセ．ピ．ア． 打抜き装置のための油圧運転システム
RU2775455C1 (ru) * 2018-10-01 2022-07-01 Сальваньини Италия С.П.А. Система гидравлического привода для пробивного устройства
IT201900010191A1 (it) * 2019-06-26 2020-12-26 Salvagnini Italia Spa Macchina per lavorare lamiere metalliche

Also Published As

Publication number Publication date
EP1445042B1 (fr) 2006-04-26
DE602004000696T2 (de) 2006-09-21
ITMI20030218A1 (it) 2004-08-08
DK1445042T3 (da) 2006-08-21
DE602004000696D1 (de) 2006-06-01
EP1445042B8 (fr) 2006-08-16
ES2262086T3 (es) 2006-11-16
ATE324200T1 (de) 2006-05-15

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