EP0749826A2 - Presse mécanique à genouillère - Google Patents

Presse mécanique à genouillère Download PDF

Info

Publication number
EP0749826A2
EP0749826A2 EP96710006A EP96710006A EP0749826A2 EP 0749826 A2 EP0749826 A2 EP 0749826A2 EP 96710006 A EP96710006 A EP 96710006A EP 96710006 A EP96710006 A EP 96710006A EP 0749826 A2 EP0749826 A2 EP 0749826A2
Authority
EP
European Patent Office
Prior art keywords
press
toggle
stand
toggle lever
cheeks
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
EP96710006A
Other languages
German (de)
English (en)
Other versions
EP0749826A3 (fr
EP0749826B1 (fr
Inventor
Berthold Daub
Christian Schultens
Hans-Werner Kutscher
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.)
Grabener Pressensysteme & Co KG GmbH
Graebener Pressensysteme GmbH and Co KG
Original Assignee
Grabener Pressensysteme & Co KG GmbH
Graebener Pressensysteme GmbH and Co KG
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 Grabener Pressensysteme & Co KG GmbH, Graebener Pressensysteme GmbH and Co KG filed Critical Grabener Pressensysteme & Co KG GmbH
Publication of EP0749826A2 publication Critical patent/EP0749826A2/fr
Publication of EP0749826A3 publication Critical patent/EP0749826A3/fr
Application granted granted Critical
Publication of EP0749826B1 publication Critical patent/EP0749826B1/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
    • B30B1/00—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen
    • B30B1/10—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen by toggle mechanism
    • B30B1/14—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen by toggle mechanism operated by cams, eccentrics, or cranks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/0029—Details of, or accessories for, presses; Auxiliary measures in connection with pressing means for adjusting the space between the press slide and the press table, i.e. the shut height
    • B30B15/0035—Details of, or accessories for, presses; Auxiliary measures in connection with pressing means for adjusting the space between the press slide and the press table, i.e. the shut height using an adjustable connection between the press drive means and the press slide
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/04—Frames; Guides
    • B30B15/041—Guides

Definitions

  • the invention relates to a mechanical toggle press with a drive arranged at the top, which has two counter-rotating and angularly synchronously rotatable drive cranks and two associated toggle lever systems, by means of which the press ram in the press stand can be lifted and lowered relative to the press table, each drive crank engaging in the knee joint area on the associated toggle lever system and wherein the press ram is connected to a lower end joint of each of these toggle lever systems by means of a fork head and an adjusting spindle.
  • a disadvantage of this known construction is that the interaction of the fork heads of the adjusting spindles with the pots of the press ram on the latter causes tilting forces which are introduced into the press stand during its working movement.
  • the stresses on the press stand resulting from the tilting forces of the press ram can, at least after a certain operating time, change its guiding qualities for the press ram affect, if care is not taken to ensure that the press ram in the area of its guides for the press ram receives a significantly reinforced and thus costly design.
  • each toggle lever system has two parallel knee joints, which have a connecting rod or a push rod as a common bearing base, on which or which on the other hand engages one of the drive cranks, has proven useful. If the connecting rod or push rod forming the common bearing base for the two knee joints of the toggle lever system is designed as a fork piece, both levers can be coupled to the same in a common effective plane. This advantageously results in a toggle lever system that is completely symmetrical relative to its central active plane and can withstand high stresses without damage.
  • the coupling also consists of two cheeks which are arranged parallel and at a distance from one another and which engage the lower end joint bolts of both toggle lever systems in each case in the vicinity of their ends turned away from one another.
  • this measure makes the construction and installation of the coupling easier, it connects the two toggle lever systems to one another in a symmetrical arrangement to their active plane, thereby ensuring that horizontal forces emanating from them also symmetrical to these active planes and at the same time being relatively large in the fixed guide - And support crossbars can be initiated.
  • An important design feature of the toggle press according to the invention also consists in the fact that the press stand has two additional stand cheeks above the range of movement of the press ram, the spacing of which from one another is only a fraction of the distance between the parallel outer ones Stator cheeks corresponds and that in each of these additional stator cheeks are both bearings for the drive crank and bearings for the upper end joints of the toggle lever systems.
  • This not only makes it possible to use relatively short and therefore dimensionally stable drive cranks, but also the toggle lever systems only require relatively short and therefore rigid bolts to form the joints.
  • the invention also provides that the actuators belonging to the adjusting spindles rest on brackets of the press ram, which at the same time can also form a support base for a ram weight compensation system which rests on a crossbar of the press stand and on the one hand at least one rubber bellows support cylinder and on the other hand one thus includes a surge tank held in flow communication.
  • a ram weight compensation system which rests on a crossbar of the press stand and on the one hand at least one rubber bellows support cylinder and on the other hand one thus includes a surge tank held in flow communication.
  • the effect of this ram weight compensation system is similar to that of the air suspensions, which are used particularly in vehicle construction.
  • the mechanical toggle lever press 1 shown in the drawing has, for example, a press stand 2 which is constructed in a welded plate construction. This has two identical stand carriages 3 and 4 of identical construction, each of which is provided with a window cutout 5 and 6.
  • the outer side cheeks 3 and 4 of the press stand 2 are connected to one another by at least two transverse cheeks 7 and 8, which are close to the upright boundary edges of the window cutouts 5 and 6 and extend at right angles to the outer side cheeks 3 and 4.
  • the outer side panels 3 and 4 and the transverse side panels 7 and 8 give the press stand 2 an at least partially essentially box-shaped design, which, however, is in the area of the window cutouts 5 and 6 of the two outer side panels 3 and 4 as well as in the area of window cutouts of the transverse side panels 7 and 8 is open.
  • the press stand 2 has two additional stand cheeks 9 and 10, which are parallel to the outer stand cheeks 3 and 4 aligned and connected to them at least above and below by crossbars 47.
  • the clear distance 11 between the two additional stand cheeks 9 and 10 corresponds to only a fraction of the clear distance 12 between the two outer stand cheeks 3 and 4.
  • the distances 11 and 12 are in a ratio of about 1: 3, with the installation levels for the additional stand cheeks 9 and 10 are arranged symmetrically to the vertical main longitudinal center plane 13-13 located between the two outer stand cheeks 3 and 4, as can be clearly seen in FIGS. 2 and 3 of the drawing.
  • the stationary press table (not shown) can be mounted in the lower part of the window cutouts 5 and 6 on the outer upright cheeks 3 and 4 and also on the additional upright cheeks 9 and 10, the upper part of these window cutouts 5 and 6 serve as vertical edge sections 14 that delimit the sides and 15 the formation or attachment of vertical guides for a press ram 16 which is arranged such that it can be raised and lowered relative to the press stand 2 and the press table fixedly mounted therein.
  • the drive for the press ram 16 is arranged in the press stand 2 above.
  • This drive has two drive cranks 17 and 18 which are mounted in the press stand in opposite directions and are synchronously rotatable, which are of identical construction and of which the drive crank 17 can be clearly seen in FIG. 3 of the drawing.
  • Fig. 3 of the drawing also shows that the bearings 19 for each of the drive cranks 17 and 18 are in the additional stator cheeks 9 and 10. It is advantageous that each of the drive cranks 17 and 18 requires only a relatively small overall length and can therefore be easily manufactured in a dimensionally stable design.
  • Each drive crank 17 and 18 works via a connecting rod or a push rod 20 or 21 with its own toggle lever system 22 or 23 which is suspended on the one hand in the press stand 2 and on the other hand attacks on the press ram 16.
  • Each of the toggle lever systems 22 and 23 has an upper lever 24 and a lower lever 25, the upper lever 24 being suspended in a fixed bearing 27 between the additional upright cheeks 9 and 10 via a bolt 26 forming the upper end joint, as clearly shown in FIG 2 can be removed.
  • the lower lever 25 engages via a bolt 28 serving as the lower end joint on a fork head 29, which forms the upper end of an adjusting spindle 30, which in turn is connected to the press ram 16 in a height-adjustable manner by an actuator 31.
  • Each of the toggle lever systems 22 and 23 also includes two mutually parallel knee joints, the bolts 32 and 33 of which have a common bearing base in a fork piece 34 of the connecting rod or the push rod 20 or 21.
  • the upper lever 24 of each toggle lever system 22 or 23 acts on the bolt 32 within the fork piece 34, while the lever 25 is held in the fork piece 34 by the bolt 33.
  • toggle lever system 22 can be seen from the toggle lever system 22 that this overall is symmetrical with the vertical main longitudinal center plane 13-13 of the press stand 2 and has its installation space between the two additional stand cheeks 9 and 10.
  • the small construction width of the toggle lever systems 22 and 23 and their symmetrical design makes it possible to dimension both the bolts 26 and 28 acting as end joints and the bolts 32 and 33 acting as knee joints relatively short, and thus the entire toggle lever system 22 and 23, respectively to give high rigidity.
  • the special feature of the toggle lever press 1 shown in the drawing is that the two bolts 28 of the lower end joints of both toggle lever systems 22 and 23, each coupled via a fork head 29 to the two adjusting spindles 30, are connected to one another by a Couplings 35 extending normally to the direction of movement of the press ram 16 are connected, which can be seen in particular in FIGS. 1 and 2 and 4 and 5.
  • the ends 36 and 37 of this coupling 35 which face away from one another lie against stationary guide and support cross members 38 and 39.
  • the guide and support beams 38 and 39 are arranged between the additional stand cheeks 9 and 10 of the press stand 2 and are firmly connected to one another by this, as can be clearly seen in FIG. 5.
  • the coupling 35 can consist of two cheeks 40 and 41 arranged parallel to one another at a distance from one another, which are each attached to the bolts 28 of the lower end joints of the two toggle lever systems 22 and 23 attack the ends facing away from each other.
  • Halfway down the cheeks 40 and 41 can also be connected to one another by a spacer 48.
  • brackets 42 which project from the press ram 16 and which preferably project outwards through window cutouts in the transverse cheeks 7 and 8 of the press stand 2.
  • brackets 42 can also form a support base for a ram weight compensation system 43, which rests on a crossbar 44 in the press stand 2 and on the one hand includes a rubber bellows support cylinder 45 and on the other hand a pressure compensation container 46 connected thereto.
  • This tappet weight compensation system 43 works approximately on the principle of the air suspensions mainly used in vehicle construction, so its operating behavior can be adapted to different operating conditions.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Press Drives And Press Lines (AREA)
  • Presses And Accessory Devices Thereof (AREA)
EP96710006A 1995-06-21 1996-06-18 Presse mécanique à genouillère Expired - Lifetime EP0749826B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19522483 1995-06-21
DE19522483A DE19522483A1 (de) 1995-06-21 1995-06-21 Mechanische Kniehebelpresse

Publications (3)

Publication Number Publication Date
EP0749826A2 true EP0749826A2 (fr) 1996-12-27
EP0749826A3 EP0749826A3 (fr) 1997-05-02
EP0749826B1 EP0749826B1 (fr) 2001-11-14

Family

ID=7764865

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96710006A Expired - Lifetime EP0749826B1 (fr) 1995-06-21 1996-06-18 Presse mécanique à genouillère

Country Status (3)

Country Link
EP (1) EP0749826B1 (fr)
DE (2) DE19522483A1 (fr)
ES (1) ES2167531T3 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10047729A1 (de) * 2000-09-27 2002-04-18 Graebener Pressensysteme Gmbh Mechanische Kniehebelpresse
ES2187321A1 (es) * 1999-07-29 2003-06-01 Schuler Pressen Gmbh & Co Serie de construccion de prensas.
CN102581102A (zh) * 2012-02-24 2012-07-18 苏州大学 双肘杆式冲床

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB350156A (en) * 1929-05-03 1931-06-11 Bliss E W Co Adjustable platen power presses
US1993839A (en) * 1932-09-29 1935-03-12 Toledo Machine & Tool Company Toggle press
US2282575A (en) * 1940-07-05 1942-05-12 Edward H Hall Press
US3348406A (en) * 1963-11-12 1967-10-24 Youngstown Sheet And Tube Co Motorized press ram adjusting means
US3524405A (en) * 1968-06-13 1970-08-18 Jarecki Corp Toggle-action press
DE2501748C3 (de) * 1975-01-17 1983-11-03 L. Schuler GmbH, 7320 Göppingen Schnittpresse mit Kniegelenkantrieb

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2187321A1 (es) * 1999-07-29 2003-06-01 Schuler Pressen Gmbh & Co Serie de construccion de prensas.
DE10047729A1 (de) * 2000-09-27 2002-04-18 Graebener Pressensysteme Gmbh Mechanische Kniehebelpresse
DE10047729C2 (de) * 2000-09-27 2003-04-03 Graebener Pressensysteme Gmbh Mechanische Kniehebelpresse
CN102581102A (zh) * 2012-02-24 2012-07-18 苏州大学 双肘杆式冲床

Also Published As

Publication number Publication date
ES2167531T3 (es) 2002-05-16
EP0749826A3 (fr) 1997-05-02
DE59608175D1 (de) 2001-12-20
DE19522483A1 (de) 1997-01-02
EP0749826B1 (fr) 2001-11-14

Similar Documents

Publication Publication Date Title
EP0458184B1 (fr) Chariot élévateur à fourche
LU86532A1 (de) Teleskopsaeule
EP1899553B1 (fr) Systeme de coffrage de plancher
DE69115406T2 (de) Mobiles Gerät zum Wiegen einer Ladung
DE3605650C2 (de) Hydraulische Hebebühne
EP1355009A2 (fr) Dispositif de recouvrement pour joints
AT395132B (de) Mittels eines kraftfahrzeugs verfahrbare hubvorrichtung zum heben einer gondel
DE19753169C2 (de) Vorrichtung zum Aufhängen einer Schiene, insbesondere einer nach unten offenen hohlprofilförmigen Schiene eines Hängekrans
EP2614028B1 (fr) Dispositif de réception d'un profilé de tablier porte-fourche
DE3425622C1 (de) Hoeheneinstellbares Podest fuer Buehnen o.dgl.
DE102009056479C5 (de) Anbaugerät für Gabelstapler mit verstellbaren Vorrichtungen zur Lastaufnahme
EP0749826B1 (fr) Presse mécanique à genouillère
EP0457247B1 (fr) Chariot de transport pour tables d'opération
EP0467210B1 (fr) Accessoire pour un chariot-élévateur avec un dispositif de maintien de charges
EP0265882A1 (fr) Dispositif de fixation d'une pelle rétro avec un engin de terrassement
EP2974994B1 (fr) Dispositif de montage
DE69601651T2 (de) Lastkraftwagen oder Anhänger mit Ladefläche
DE2301042B2 (de) Vorrichtung zur Befestigung und Arretierung längsverstellbarer Sitze und Fahrzeugen, insbesondere Kraftfahrzeugen
EP2477820B1 (fr) Ensemble support pour un dispositif d'impression à jet d'encre
DE3607504A1 (de) Austragseinrichtung, insbesondere fuer kratzfoerdergeraete und becherwerke
DE3317801C2 (fr)
DE2339196C3 (de) Bodenbearbeitungsvorrichtung
DE4009699C2 (de) Verfahren und Anordnung zum Stützen des Körpers einer Papiermaschine oder dergleichen
DE2832548C3 (fr)
DE4007457A1 (de) Gleichlaufvorrichtung fuer einrichtungen zum abstellen von kraftfahrzeugen

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: 19960709

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): DE ES FR GB IT

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): DE ES FR GB IT

17Q First examination report despatched

Effective date: 19991105

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

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): DE ES FR GB IT

REF Corresponds to:

Ref document number: 59608175

Country of ref document: DE

Date of ref document: 20011220

REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 20020212

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2167531

Country of ref document: ES

Kind code of ref document: T3

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: FR

Payment date: 20100706

Year of fee payment: 15

Ref country code: ES

Payment date: 20100625

Year of fee payment: 15

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

Ref country code: IT

Payment date: 20100621

Year of fee payment: 15

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

Ref country code: GB

Payment date: 20100618

Year of fee payment: 15

Ref country code: DE

Payment date: 20100625

Year of fee payment: 15

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

Effective date: 20110618

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: 20110618

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20120229

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 59608175

Country of ref document: DE

Effective date: 20120103

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: 20120103

Ref country code: FR

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

Effective date: 20110630

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: 20110618

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20120717

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

Ref country code: ES

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

Effective date: 20110619