EP0749826B1 - Presse mécanique à genouillère - Google Patents

Presse mécanique à genouillère Download PDF

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Publication number
EP0749826B1
EP0749826B1 EP96710006A EP96710006A EP0749826B1 EP 0749826 B1 EP0749826 B1 EP 0749826B1 EP 96710006 A EP96710006 A EP 96710006A EP 96710006 A EP96710006 A EP 96710006A EP 0749826 B1 EP0749826 B1 EP 0749826B1
Authority
EP
European Patent Office
Prior art keywords
press
toggle joint
cheeks
toggle
ram
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.)
Expired - Lifetime
Application number
EP96710006A
Other languages
German (de)
English (en)
Other versions
EP0749826A2 (fr
EP0749826A3 (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

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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 the top arranged drive, which two opposite and angularly synchronous rotatable drive cranks and two associated toggle lever systems has, via which the press ram in the press stand relative to Press table can be raised and lowered, each drive crank attacks the associated knee lever system in the knee joint area and the press ram each having a lower end joint of these toggle lever systems via a fork head and an adjusting spindle height-adjustable connection.
  • a toggle press with a two-part press ram in which an inner Plunger performs the actual forming and an outer plunger e.g. to be reshaped Sheet metal is jammed, is also known from US-A 1,993,639. Also here the horizontal forces that occur are first introduced into the press ram, and with eccentric connecting rod forces there is a defined one Emigration movement to one side and to a side berth. This is also not by connecting the outer toggle lever systems by means of a Coupling rod prevented, because this coupling causes only one internal strut of the drive system, which is otherwise completely free in the Press lies.
  • toggle presses of this type they are the press ram protruding fork heads of the adjusting spindles mounted in it each in a pot arranged on the press ram led to prevent that coming from the press drive Lateral forces adversely on the in and on the press ram housed actuators for the adjusting spindles can.
  • 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 caused by the latter tipping forces introduced into the press stand during its working movement become.
  • the resulting from the tipping forces of the press ram Stresses on the press stand can at least after one certain operating times his leadership qualities for the press ram affect, if care is not taken to ensure that the Press stamp in the area of its guides for the press ram a significantly strengthened and therefore costly design receives.
  • each toggle system has two parallel knee joints has a connecting rod or a common bearing base Have push rod, on which or which on the other hand one of the Drive cranks attacks.
  • the common storage base for the section of the toggle system forming the two knee joints Connecting rods or the push rod can be designed as a fork piece both levers coupled with this in a common effective level become. This advantageously results in a relative to completely symmetrical toggle lever system in its middle plane of action, that can take up high damage without damage.
  • the invention provides that the coupling of two at a distance cheeks arranged parallel to each other, which on the lower End joint pin of both toggle lever systems near each attack the ends facing away from each other. Apart from this, that this measure facilitates the construction and installation of the paddock , it connects the two toggle lever systems together symmetrical arrangement to their effective level and thereby provides sure that horizontal forces emanating from these are also symmetrical to these planes of action and at the same time in a relatively large area into the stand-fixed ones Guide and support crossbars can be initiated.
  • the invention also provides that the adjusting spindles associated actuators on brackets of the press ram rest, which is also a support base for a ram weight compensation system can form, which on a traverse of the Press stand rests and on the one hand at least one rubber bellows support cylinder and on the other hand one in fluid communication with it held pressure expansion tank includes.
  • This ram weight compensation system its mode of action is particularly similar to that Air suspensions often used in vehicle construction.
  • the mechanical toggle press 1 shown in the drawing has a press stand, for example, in a welded plate construction 2.
  • This has two identical designs and one to the other parallel trolleys 3 and 4, each with a window opening 5 and 6 is provided. They are interconnected outer side walls 3 and 4 of the press stand 2 each at least two transverse cheeks 7 and 8, which are close to the upright boundary edges the window sections 5 and 6 are located in extend at right angles to the outer side cheeks 3 and 4.
  • the press stand 2 essentially at least in some areas box-shaped design, but in the area of the window cutouts 5 and 6 of the two outer upright cheeks 3 and 4 as well as in the area of window sections of the transverse cheeks 7 and 8 is open.
  • the press stand 2 has two additional stand cheeks 9 and 10, which are parallel to the outer upright cheeks 3 and 4 aligned and with these at least above and below through crossbars 47 are connected.
  • the clear distance 11 between the two additional stand cheeks 9 and 10 correspond to only one Fraction of the clear distance 12 between the two outer ones Stand cheeks 3 and 4.
  • the distances 11 and 12 are preferably to each other in a ratio of about 1: 3, with the installation levels for the additional stand cheeks 9 and 10 symmetrical to the vertical between the two outer upright cheeks 3 and 4
  • Main longitudinal median plane 13-13 are arranged like that 2 and 3 of the drawing clearly show.
  • window sections 5 and 6 on the outer stand cheeks 3 and 4 and also the additional stand cheeks 9 and 10 of the (not shown) fixed press table mounted can serve the upper part of these window sections 5 and 6 laterally delimiting, vertical edge sections 14 and 15 of the Formation or attachment of vertical guides for a press ram 16, which is relative to the press stand 2 and the therein Mount the press table so that it can be raised and lowered.
  • the drive for the press ram 16 is in the press stand 2 above arranged.
  • This drive has two opposite and angularly synchronous Drive cranks 17 and rotatably mounted in the press stand 18 on, which are constructed identically and of which the drive crank 17 in Fig. 3 of the drawing can be clearly seen.
  • Fig. 3 the Drawing also shows that the bearing 19 for each of the Drive cranks 17 and 18 in the additional stand cheeks 9 and 10 are located. It is advantageous that each of the drive cranks 17 and 18 required only a relatively small overall length and therefore 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 together, 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 systems 22 and 23 has an upper lever 24 and a lower lever 25, the upper lever 24 via one forming the upper end joint Bolts 26 in fixed bearings 27 between the additional Stand cheeks 9 and 10 is suspended, as clearly shown in FIG. 2 can be removed.
  • the lower lever 25 engages over as lower end joint serving bolt 28 on a clevis 29, the forms the upper end of an adjusting spindle 30, which in turn by an actuator 31 adjustable in height on the press ram 16 connected.
  • Each of the toggle lever systems 22 and 23 still have two parallel knee joints, the bolts 32 and 33 a common bearing base in a fork piece 34 of the connecting rod or Have push rod 20 or 21.
  • the upper lever 24 engages each Toggle lever system 22 or 23 within the fork piece 34 on the bolt 32 on, while the lever 25 in the fork piece 34 by the bolt 33 is held.
  • toggle lever system 22 can be seen from the toggle lever system 22 that this overall to the main vertical longitudinal median plane 13-13 of Press stand 2 is symmetrical and its installation space has 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 use both the end joints acting bolts 26 and 28 as well as those acting as knee joints Bolts 32 and 33 each have a relatively short dimension and thus the entire toggle system 22 or 23 to give a high rigidity.
  • the peculiarity of the toggle press shown in the drawing 1 is that the two bolts 28 each have a Clevis 29 with the two adjusting spindles 30 coupled lower End joints of both toggle systems 22 and 23 together by a extending normal to the direction of movement of the press ram 16 Coupling 35 are connected, in particular in FIGS. 1 and 2 and 4 and 5 can be seen.
  • the ends turned away from each other 36 and 37 of this coupling 35 lie against stationary guide and support beams 38 and 39.
  • the guide and support beams 38 and 39 are between the additional stand cheeks 9 and 10 of the press stand 2 arranged and are fixed together by this connected, as is clear from Fig. 5.
  • adjusting spindles 30 associated actuators 31 on from the press ram 16 cantilevered consoles 42 rest, preferably through window openings in the transverse cheeks 7 and 8 of the press stand 2 to the outside protrude.
  • These brackets 42 can also be a support base form for a ram weight compensation system 43, which on a crossbar 44 rests in the press stand 2 and on the one hand a rubber bellows support cylinder 45 and on the other hand one in Connected surge tank 46 includes.
  • This Ram weight compensation system 43 works approximately on the principle the air suspension mainly used in vehicle construction, can thus be different in its operating behavior Coordinate operating conditions.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Press Drives And Press Lines (AREA)
  • Presses And Accessory Devices Thereof (AREA)

Claims (6)

  1. Presse à genouillère (1) avec l'entraínement disposé en haut, qui comprend deux manivelles de commande (17, 18) contrarotatives à synchronisation angulaire et deux systèmes à genouillère (22,23) associés, sur lesquels le coulisseau de presse (16) est accroché de façon à pouvoir se soulever et s'abaisser dans le bâti de la presse (2) par rapport à la table de la presse, dans laquelle chaque manivelle de commande (17 et 18) dans la zone de genouillère agit sur le système à genouillère associé (22 et 23) et dans laquelle le coulisseau de presse (16) est en contact avec une articulation d'extrémité inférieure (28) respective de chacun de ces systèmes à genouillère (22 et 23), ajustable en hauteur par une tige de réglage (30) respective,
       caractérisée en ce que
    les articulations d'extrémité (28) portant les tiges de réglage (30), des deux systèmes à genouillère, sont en contact l'une avec l'autre par une bielle (35) se prolongeant normalement à la direction de mouvement du coulisseau de presse (16),
    les extrémités (36 et 37) détournées l'une de l'autre de cette bielle (35) s'appuient contre des traverses de guidage et de soutien (38 et 39) fixes par rapport au bâti, et
    les traverses de guidage et de soutien (38 et 39) se prolongent au-dessus des guides de coulisseau (14 et 15), parallèlement aux plans d'axe verticaux à travers les articulations d'extrémité inférieures (28) des systèmes à genouillère (22 et 23).
  2. Presse à genouillère mécanique selon la revendication 1, caractérisée en ce que chaque système à genouillère (22 et 23) comprend deux genouillères parallèles (32 et 33), qui possèdent en tant que base commune de palier (34), une bielle ou une barre poussoir (20 ou 21) sur lesquelles d'autre part une des manivelles (17 ou 18) agit respectivement.
  3. Presse à genouillère mécanique selon l'une quelconque des revendications 1 et 2, caractérisée en ce que la bielle (35) est constituée de deux flasques (40 et 41) disposés en parallèle, espacés l'un de l'autre, qui agissent sur les boulons d'articulation d'extrémité (28) des deux systèmes à genouillère (22 et 23), respectivement au voisinage de ses extrémités détournées l'une de l'autre (figures 2 et 5).
  4. Presse à genouillère mécanique selon l'une quelconque des revendications 1 à 3, caractérisée en ce que le bâti de la presse (2) comprend dans son intérieur, au-dessus de la course de mouvement du coulisseau de presse, au moins deux flasques de bâti (9 et 10) supplémentaires, dont l'écartement (11) correspond uniquement à une fraction de l'écartement (12) entre les flasques de bâti extérieurs (3 et 4) parallèles à ces demiers, et en ce que, dans chacun de ces flasques de bâti supplémentaires (9 et 10), se trouvent aussi bien un palier (19) pour les manivelles de commande (17 et 18) qu'un palier (27) pour l'articulation d'extrémité (26) du système à genouillère (22 et 23).
  5. Presse à genouillère mécanique selon l'une quelconque des revendications 1 à 4, caractérisée en ce que l'écartement (11) entre les deux flasques de bâti supplémentaires (9 et 10) correspond à environ un tiers de l'écartement (12) entre les flasques de bâti extérieurs (3 et 4) parallèles à ces demiers et d'une part la longueur de la zone coudée des manivelles de commande (17 et 18) y est limitée et d'autre part elle est déterminante pour la dimension de la bielle (35).
  6. Presse à genouillère mécanique selon l'une quelconque des revendications 1 à 5, caractérisée en ce que les entraínements de réglage (31) associés aux tiges de réglage (30) reposent sur des consoles (42) du coulisseau de presse (16) qui en même temps forment également une embase d'appui pour un système (43) de compensation du poids du coulisseau, lequel système repose sur une traverse (44) du bâti (2) de presse et comprend d'une part un cylindre porteur (46) à soufflet en caoutchouc et d'autre part un récipient de compensation de pression (46).
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 EP0749826A2 (fr) 1996-12-27
EP0749826A3 EP0749826A3 (fr) 1997-05-02
EP0749826B1 true 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)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19935656A1 (de) * 1999-07-29 2001-02-01 Schuler Pressen Gmbh & Co Pressenbaureihe
DE10047729C2 (de) * 2000-09-27 2003-04-03 Graebener Pressensysteme Gmbh Mechanische Kniehebelpresse
CN102581102B (zh) * 2012-02-24 2015-01-21 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

Also Published As

Publication number Publication date
ES2167531T3 (es) 2002-05-16
DE19522483A1 (de) 1997-01-02
EP0749826A2 (fr) 1996-12-27
EP0749826A3 (fr) 1997-05-02
DE59608175D1 (de) 2001-12-20

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