EP0024699B1 - Entraînement de presse - Google Patents

Entraînement de presse Download PDF

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Publication number
EP0024699B1
EP0024699B1 EP80104991A EP80104991A EP0024699B1 EP 0024699 B1 EP0024699 B1 EP 0024699B1 EP 80104991 A EP80104991 A EP 80104991A EP 80104991 A EP80104991 A EP 80104991A EP 0024699 B1 EP0024699 B1 EP 0024699B1
Authority
EP
European Patent Office
Prior art keywords
toggle joint
press
joint
drive according
press drive
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
Application number
EP80104991A
Other languages
German (de)
English (en)
Other versions
EP0024699A2 (fr
EP0024699A3 (en
Inventor
Alfred Bareis
Hans-Martin Dommer
Ewald Bergmann
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.)
L Schuler GmbH
Original Assignee
L Schuler 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 L Schuler GmbH filed Critical L Schuler GmbH
Priority to AT80104991T priority Critical patent/ATE4633T1/de
Publication of EP0024699A2 publication Critical patent/EP0024699A2/fr
Publication of EP0024699A3 publication Critical patent/EP0024699A3/de
Application granted granted Critical
Publication of EP0024699B1 publication Critical patent/EP0024699B1/fr
Expired legal-status Critical Current

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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
    • B30B15/0064—Counterbalancing means for movable press elements
    • 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
    • B30B1/106—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 another toggle mechanism
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/869—Means to drive or to guide tool
    • Y10T83/8696—Means to change datum plane of tool or tool presser stroke
    • Y10T83/87—By varying length of tool stroke
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/869—Means to drive or to guide tool
    • Y10T83/8821—With simple rectilinear reciprocating motion only
    • Y10T83/8824—With provision for dynamic balance
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/869—Means to drive or to guide tool
    • Y10T83/8821—With simple rectilinear reciprocating motion only
    • Y10T83/8837—With application of force to opposite ends of tool supporting crosshead
    • Y10T83/884—By connecting rod articulated with tool support
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/869—Means to drive or to guide tool
    • Y10T83/8821—With simple rectilinear reciprocating motion only
    • Y10T83/8841—Tool driver movable relative to tool support
    • Y10T83/8845—Toggle links, one link pivoted to tool support

Definitions

  • the invention relates to a press drive with a central eccentric shaft, which is operatively connected via connecting rods to a sliding block guided in a vertical straight guide, with tabs being articulated symmetrically to one another via the sliding block, via which a plunger can be moved indirectly by means of a further articulated connection, and wherein the - Corresponding counterbalance mass balancing weights are provided and the masses coming therefrom which are connected to the sliding block via further links.
  • a generic press drive is described in DE-OS 25 34 628.
  • the well-known press drive which is especially designed for high-speed mechanical presses, contains a central eccentric shaft that is functionally connected to a sliding block via connecting rods.
  • Tabs or one-armed levers are articulated symmetrically to one another on the sliding block, via which a plunger can be moved indirectly by means of a further articulated connection.
  • the one-armed levers are mounted opposite the articulation of the sliding block on ram adjustments, which are arranged fixed to the press frame.
  • Push rods which act between the plunger and the one-armed levers, serve as a further articulated connection.
  • mass balance weights are provided via further links and double levers, which enable a complete dynamic mass balance.
  • the usual arrangement namely an eccentric bushing that can be rotated relative to an eccentric, is provided for the stroke adjustment.
  • the dynamic behavior of the press is influenced quite unfavorably by the arrangement of the bearings in the power flow and by the arrangement of the one-armed lever, so that, among other things, the depth of immersion of the upper tools in the lower tools increases with increasing stroke rates , since the number of bearing clearances and also the elastic deformation of the one-armed levers, which are subjected to bending, significantly reduce the rigidity of the overall system.
  • the invention is therefore based on the object of specifying a press drive which, with complete dynamic mass balancing, is constructed with a minimum of bearings in the power flow and which has components in the power flow which are only subjected to pressure and tension.
  • the press drive according to the invention fulfills the requirements stated at the outset, a minimum of bearings in the power flow, namely three per knee joint, no components stressed by bending, as a result of which the masses to be moved are reduced and a lighter design can be achieved.
  • the press drive according to the invention thus achieves a high degree of rigidity, which results in a reduction in tool wear, since the immersion depth and the other dynamic behavior are positively influenced. If the press drive according to the invention is equipped with a stroke adjustment device, the feed phase of a feed device which is driven directly by the press drive remains constant during a stroke adjustment.
  • first knee joints 19, 20 and 21, 22 are mounted with their arms 19, 21 on support points or support joint 23, 24 fixed to the press frame, while the arms 20, 22 with second knee joints 25, 26 and 27, 28 arranged almost vertically via extensions 29 , 30 are connected.
  • the second knee joints 25, 26 and 27, 28 are mounted with the links 25, 27 and their extensions 29, 30 on supports 31, 32 fixed to the press frame.
  • Mass balance weights 33, 34 are articulated on the links 26, 28 in a press-frame manner.
  • press frame-guided means that the mass balancing weights 33, 34 are either guided on arms 35, 36 on circular arcs which almost correspond to the tangents placed on the circular arches, or are guided in frame-fixed - see FIG. 2 - guides 37, 38 which are arranged in the same direction as guides (not shown) of a plunger 39.
  • transmission straps 40, 41 are articulated, which are connected directly to third knee joints 42, 43 and 44, 45 arranged almost vertically.
  • the tappet 39 is articulated on the links 43, 45, while the links 42, 44 are supported on the tappet adjustment devices 46, 47, which are known per se, in a fixed manner on the press frame.
  • FIG. 2 differs from the press drive according to FIG. 1 by the linear guides 37, 38 already mentioned for the mass balancing weights 33, 34 and the arrangement of the support points or support joints 23, 24.
  • they are omitted the extensions 17, 18 so that the tabs 15, 16 are connected directly to the links 19, 21 of the first knee joints 19, 20 and 21, 22.
  • the support points or support joints 23, 24 are designed as such.
  • FIG. 1 shows a stroke adjustment device which is expediently used in the press drive according to FIG. 1.
  • Sliding blocks 48, 49 are guided in linear guides 50, 51 fixed to the press frame.
  • the sliding blocks 48, 49 are adjusted by a threaded spindle 52, 53, which are equipped with a worm wheel 54, 55 at the ends facing each other.
  • the worm wheels 54, 55 are driven by a common, central worm shaft 56, which can be designed to be movable either by motor or manually.
  • the stroke adjustment device is formed, which can preferably be used in a press drive according to FIG. 2.
  • the support points or support joints 23, 24 are arranged on levers 57, 58 which are fixed to the frame but are pivotable.
  • the pivotable levers 57, 58 are connected via connecting links 59, 60 to a central sliding block 61 which can be adjusted by means of an adjusting spindle 62.
  • the adjusting spindle 62 is driven here via worm wheels 63, 64, whereby both a manual drive and a motor drive can be provided.
  • a comparison of the generic press drive with a press drive according to the invention shows that in a two-point drive for the known press drive according to DE-OS 25 34 628 thirteen (13) pivot points or bearing points of total bearing points must be arranged in the power flow, while a comparable one Press drive according to the invention only six (6) hinge points, d. H. with two knee joints, the minimum number of 31 joint points are also arranged in the power flow.
  • the positions of the first knee joints 19, 20 and 21, 22 and the third Knee joints 42, 43 and 44, 45 are selected so that when the lower reversal point of the ram 39 is reached, the third knee joints 42, 43 and 44, 45 pass through the stretched position, while the first knee joints 19, 20 and 21, 22 pass through the flexion position.
  • the second knee joints 25, 26 and 27, 28 simultaneously pass through the extended position, so that in the condition - the length ratios of the links 25, 26 and 27, 28 of the second knee joints 25, 26 and 27, 28 and the links 42, 43 are the same or 44, 45 of the third knee joints 42, 43 and 44, 45 - and corresponding dimensioning of the mass balance weights 33, 34 of the links and the brackets of the press drive is mass balanced.
  • the second knee joints 25, 26 and 27, 28 are moved at exactly the same angle as the third knee joints 42, 43 and 44, 45 - in opposite directions in the example described.
  • the arrangement can also be constructed in such a way that the second and third knee joints are driven in pairs in the same direction but in opposite directions.
  • the stroke of the mass balance weights 33, 34 articulated on the second knee joint 25, 26 and 27, 28 is automatically changed when the stroke is changed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Press Drives And Press Lines (AREA)
  • Presses And Accessory Devices Thereof (AREA)
  • Paper (AREA)
  • Lubrication Of Internal Combustion Engines (AREA)
  • Vending Machines For Individual Products (AREA)

Claims (10)

1. Mécanisme de commande de presse comprenant un arbre à excentrique central (10) qui agit par l'intermédiaire d'au moins une bielle (11) sur une coulisse (12) guidée dans un guidage rectiligne vertical (13) et à laquelle sont articulées symétriquement des barres d'accouplement ou jumelles (15, 16) pour le déplacement d'un coulisseau (39) par l'intermédiaire d'une autre liaison articulée, ainsi que des contrepoids (33, 34), correspondant aux masses animées de mouvements alternatifs, qui sont mus en sens contraire et sont reliés à la coulisse (12) par d'autres bielles, caractérisé en ce qu'il possède, dans chacune des branches d'une disposition symétrique par rapport à l'arbre à excentrique 10 comportant au moins deux branches de transmission d'efforts :
a) une première genouillère (19, 20 ; 21, 22) orientée presque horizontalement, qui est articulée à la jumelle (15 ; 16) et présente une articulation d'appui (23 ; 24) sur le bâti de presse (14) ;
b) une deuxième genouillère (25, 26 ; 27, 28), orientée à peu près verticalement, qui est reliée à la première genouillère (19, 20 ; 21, 22) et sur laquelle est articulé le contrepoids (33 ; 34), lui- même guidé sur le bâti de presse ; et
c) une troisième genouillère (42, 43 ; 44, 45), orientée à peu près verticalement, qui est reliée par une barre d'accouplement (40 ; 41) et une articulation commune à la première (19, 20 ; 21, 22) et la deuxième genouillère (25, 26 ; 27, 28) et qui est articulée au coulisseau (39) et guidée sur le bâti de presse (14) dans la direction de déplacement du coulisseau (39).
2. Mécanisme selon la revendication 1, caractérisé en ce que la troisième genouillère (42, 43 ; 44, 45) atteint la position étendue lorsque le coulisseau (39) est dans la région du point mort bas et en ce que la première genouillère (19, 20 ; 21, 22) passe en même temps par la position de flexion maximale.
3. Mécanisme selon la revendication 1 ou 2, caractérisé en ce que le rapport des longueurs des bielles (25, 26 ; 27, 28) de la deuxième genouillère est le même que le rapport des longueurs des bielles (42, 43 ; 44, 45) de la troisième genouillère et en ce que la deuxième et la troisième genouillère sont mues en synchronisme angulaire.
4. Mécanisme selon l'une quelconque des revendications 1 à 3, caractérisé en ce que la troisième genouillère (42, 43 ; 44, 45) est appuyée sur le bâti (14) de la presse avec interposition d'un organe (46 ; 47) pour le réglage en hauteur du coulisseau (39).
5. Mécanisme selon l'une quelconque des revendications 1 à 4, caractérisé en ce que l'articulation d'appui (23 ; 24) de la première genouillère (19, 20 ; 21, 22) sur le bâti de presse (14) est réalisée comme un dispositif de réglage de la course du coulisseau.
6. Mécanisme selon l'une quelconque des revendications 1 à 5, caractérisé en ce que la bielle (19 ; 21) de la première genouillère (19, 20 ; 21, 22) montée sur l'articulation d'appui (23 ; 24) est reliée à la jumelle (15 ; 16) par une rallonge (18 ; 19) de cette bielle.
7. Mécanisme selon l'une quelconque des revendications 1 à 5, caractérisé en ce que la jumelle (15 ; 16) est directement articulée sur la bielle (19 ; 21) montée dans l'articulation d'appui (23 ; 24) de la première genouillère (19, 20 ; 21, 22).
8. Mécanisme selon la revendication 5 ou 6, caractérisé en ce que le dispositif de réglage de la course comporte une coulisse (48 ; 49) disposée dans un guidage rectiligne (50 ; 51) du bâti (14) de la presse.
9. Mécanisme selon la revendication 8, caractérisé en ce que la coulisse (48 ; 49) est déplaçable au moyen d'un arbre à vis sans fin central (56) par l'intermédiaire d'une tige filetée (52 ; 53) et d'une roue à vis sans fin (54 ; 55).
10. Mécanisme selon la revendication 5 ou 7, caractérisé en ce que l'articulation d'appui (23 ; 24) est disposée sur un levier (57 ; 58) monté oscillant sur le bâti de la presse et articulé par l'intermédiaire d'une pièce d'accouplement (59 ; 60) sur une coulisse centrale (61) qui peut être déplacée au moyen d'une tige filetée de réglage (62) portant une roue (63) à vis sans fin et d'une autre roue (64) à vis sans fin.
EP80104991A 1979-08-24 1980-08-21 Entraînement de presse Expired EP0024699B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT80104991T ATE4633T1 (de) 1979-08-24 1980-08-21 Pressenantrieb.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2934286 1979-08-24
DE2934286A DE2934286C2 (de) 1979-08-24 1979-08-24 Mehrpunkt-Pressenantrieb

Publications (3)

Publication Number Publication Date
EP0024699A2 EP0024699A2 (fr) 1981-03-11
EP0024699A3 EP0024699A3 (en) 1981-08-05
EP0024699B1 true EP0024699B1 (fr) 1983-09-14

Family

ID=6079221

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80104991A Expired EP0024699B1 (fr) 1979-08-24 1980-08-21 Entraînement de presse

Country Status (7)

Country Link
US (1) US4318325A (fr)
EP (1) EP0024699B1 (fr)
JP (1) JPS5633198A (fr)
AT (1) ATE4633T1 (fr)
BR (1) BR8005261A (fr)
DE (1) DE2934286C2 (fr)
ES (1) ES494444A0 (fr)

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0057741B1 (fr) * 1981-02-11 1984-08-01 L. SCHULER GmbH Entraînement de presse
DE3233083A1 (de) * 1982-09-06 1984-03-08 Mabu-Pressen Maschinenfabrik Karl Burkard KG, 6370 Oberursel Exzenterpresse
DE3332173A1 (de) * 1982-09-06 1984-03-08 Mabu-Pressen Maschinenfabrik Karl Burkard KG, 6370 Oberursel Exzenterpresse
DE3517492A1 (de) * 1984-11-05 1986-05-07 Werner Ing.(Grad.) 6460 Gelnhausen Leinhaas Kniehebel-blechschneidepresse, bestehend aus einem pressenstaender und einem pressenstoessel
EP0250610B1 (fr) * 1986-06-20 1990-04-04 E. Bruderer Maschinenfabrik AG Presse à genouillère, à découper et à déformer
WO1988005724A1 (fr) * 1987-02-03 1988-08-11 Bruderer Ag Entrainement pour presse
DE3770624D1 (de) * 1987-03-24 1991-07-11 Leinhaas Werner Schneid- und umformpresse mit hydro-mechanischem gelenkantrieb.
DE4411900C2 (de) * 1994-04-07 2002-07-04 Graebener Pressensysteme Gmbh Prägepresse, insbesondere Münzprägepresse
DE59509185D1 (de) * 1995-09-27 2001-05-17 Bruderer Ag Frasnacht Arbon Kniehebel-Stanzpresse
EP1038422A2 (fr) * 1998-07-13 2000-09-27 Koninklijke Philips Electronics N.V. Procede et appareil utilises pour la fabrication de dispositifs a semi-conducteurs
US6082255A (en) * 1998-07-13 2000-07-04 Sencorp Systems, Inc. Press apparatus with dynamic counterbalance and feed mechanism
US6112571A (en) * 1999-03-22 2000-09-05 Ing Yu Precision Industries Co., Ltd. Two-point double toggle mechanism
DE19935656A1 (de) * 1999-07-29 2001-02-01 Schuler Pressen Gmbh & Co Pressenbaureihe
IT1314654B1 (it) * 2000-03-03 2002-12-31 Copress S R L Meccanismo di comando per presse con attuazione a doppia ginocchiera
JP3701005B2 (ja) * 2000-05-11 2005-09-28 アイダエンジニアリング株式会社 プレス機械のスライド駆動装置
DE102006006312A1 (de) * 2006-02-10 2007-08-16 Pressenservice Scheitza Gmbh Servo-Presse
DE102009007833A1 (de) * 2009-02-06 2010-08-12 Egon Evertz Kg (Gmbh & Co.) Kniehebelpresse
CN101543858B (zh) * 2009-05-08 2010-09-29 南京理工大学 高速精密压力机
CN102145369A (zh) * 2010-12-09 2011-08-10 江苏省徐州锻压机床厂集团有限公司 一种高速精密压力机驱动机构
CN102555254B (zh) * 2012-02-29 2014-04-23 西安交通大学 一种高速压力机主传动机构
CN113119504A (zh) * 2021-04-20 2021-07-16 武汉理工大学 下死点精密可调的多肘杆式伺服压力机
CN113815024B (zh) * 2021-09-03 2023-03-14 江苏鸿皓包装有限公司 一种塑料包装的剪切装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE839759C (de) * 1948-08-24 1952-05-23 Schwäbisch Gmünd Dr.-Ing. Otto May Kniehebelpresse
FR2274835A1 (fr) * 1974-06-11 1976-01-09 Weingarten Ag Maschf Dispositif pour l'equilibrage de la masse du poussoir d'une machine actionnee par un mecanisme de transmission a vilebrequin
GB2013562A (en) * 1978-02-02 1979-08-15 Schuler Gmbh L Device for use in intermittent operation of a notching press

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1986410A (en) * 1934-09-24 1935-01-01 Fredrich J Rode Sheet metal press
GB461859A (en) * 1935-10-25 1937-02-25 William Klocke Improvements in presses
US2753937A (en) * 1953-09-15 1956-07-10 Erwin Loewy Lever-operated shears
US3450038A (en) * 1967-04-04 1969-06-17 Bliss Co High speed press
GB1285181A (en) * 1969-03-19 1972-08-09 Wickman Mach Tool Sales Ltd Presses
US3808912A (en) * 1972-11-21 1974-05-07 Minster Machine Co Arrangement for dynamic balancing of a mechanical press, especially a high speed mechanical press
US4160409A (en) * 1974-09-03 1979-07-10 Bruderer Ag Drive for the movable work component, such as the ram of a press, stamping machine or the like
US4156387A (en) * 1974-09-03 1979-05-29 Bruderer Ag Apparatus for mass compensation at a machine driven by a crank drive
CH574323A5 (fr) * 1974-09-03 1976-04-15 Bruderer Ag
DD136024A1 (de) * 1977-12-09 1979-06-13 Klaus Miethbauer Antrieb fuer mechanische pressen

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE839759C (de) * 1948-08-24 1952-05-23 Schwäbisch Gmünd Dr.-Ing. Otto May Kniehebelpresse
FR2274835A1 (fr) * 1974-06-11 1976-01-09 Weingarten Ag Maschf Dispositif pour l'equilibrage de la masse du poussoir d'une machine actionnee par un mecanisme de transmission a vilebrequin
GB2013562A (en) * 1978-02-02 1979-08-15 Schuler Gmbh L Device for use in intermittent operation of a notching press

Also Published As

Publication number Publication date
EP0024699A2 (fr) 1981-03-11
US4318325A (en) 1982-03-09
DE2934286A1 (de) 1981-03-12
JPS5633198A (en) 1981-04-03
ATE4633T1 (de) 1983-09-15
EP0024699A3 (en) 1981-08-05
ES8103686A1 (es) 1981-03-16
BR8005261A (pt) 1981-03-04
ES494444A0 (es) 1981-03-16
DE2934286C2 (de) 1984-06-14

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