EP0024699A2 - Entraînement de presse - Google Patents

Entraînement de presse Download PDF

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Publication number
EP0024699A2
EP0024699A2 EP80104991A EP80104991A EP0024699A2 EP 0024699 A2 EP0024699 A2 EP 0024699A2 EP 80104991 A EP80104991 A EP 80104991A EP 80104991 A EP80104991 A EP 80104991A EP 0024699 A2 EP0024699 A2 EP 0024699A2
Authority
EP
European Patent Office
Prior art keywords
knee joint
press
press drive
sliding block
drive according
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
EP80104991A
Other languages
German (de)
English (en)
Other versions
EP0024699A3 (en
EP0024699B1 (fr
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 straight guide, tabs being articulated symmetrically to one another on the sliding block, via which a ram can be moved indirectly by means of a further articulated connection, and wherein the and corresponding masses, counter-driven mass balance weights are provided, 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 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 located in the power flow, and which has components in the power flow that 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 subjected to bending stress, 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 rest are dynamic Behavior is 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.
  • 1 and 2 is constructed symmetrically to a crank or eccentric shaft 10. At least one connecting rod 11 is connected to the eccentric shaft 10 and is connected to a sliding block 12.
  • the sliding block 12 is guided in a straight guide 13 in a press frame 14 and connected to two brackets 15, 16.
  • the tabs 15, 16 are connected via extensions 17, 18 to almost horizontally arranged first knee joints 19, 20 and 21, 22.
  • the first knee joints 19, 20 and 21, 22 are mounted with their links 19, 21 on support points 23, 24 in a press frame, while the links 20, 22 are connected to second knee joints 25, 26 and 27, 28 arranged almost vertically via extensions 29, 30 are.
  • 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 the guides of a plunger 39, which are not shown in detail.
  • transmission straps 40, 41 are articulated, which are attached directly with almost vertically ordered third knee joints 42, 43 and 44, 45 are connected.
  • 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 press frame-fixed manner.
  • the variant shown in FIG. 2 differs from the press drive according to FIG. 1 by the already mentioned linear guides 37, 38 for the mass balance weights 33, 34 and the arrangement of the support points 23, 24.
  • the extensions 17 are omitted , 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 23, 24 are designed as such.
  • FIG. 3 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 either motor-driven or manually movable.
  • the stroke adjustment device is designed, which can preferably be used in a press drive according to FIG. 2.
  • the support points 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 straps 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 in the power flow thirteen (13) hinge points or bearing points total 31 bearing points must be arranged, while in a comparable press drive according to the invention only six (6) articulation points, ie the minimum number for two knee joints, of 31 articulation 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, given the condition that the length ratios of the links 25, 26 and 27, 28 of the second knee joints 25, 26 and 27, 28 and the link 42 are identical , 43 and 44, 45 of the third knee joints 42, 43 and 44, 45- and corresponding dimensioning of the mass balance weights 33, 34 of the handlebars and the brackets of the press drive is 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)
  • Lubrication Of Internal Combustion Engines (AREA)
  • Paper (AREA)
  • Vending Machines For Individual Products (AREA)
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 true EP0024699A2 (fr) 1981-03-11
EP0024699A3 EP0024699A3 (en) 1981-08-05
EP0024699B1 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)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0057741A1 (fr) * 1981-02-11 1982-08-18 L. SCHULER GmbH Entraînement de presse
WO2010088871A1 (fr) * 2009-02-06 2010-08-12 Egon Evertz K.G. (Gmbh & Co.) Presse à genouillère
CN101543858B (zh) * 2009-05-08 2010-09-29 南京理工大学 高速精密压力机
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

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
DE3670043D1 (de) * 1986-06-20 1990-05-10 Bruderer Maschinenfabrik Ag E Gelenkhebel-, schneid- und umformpresse.
EP0300000B1 (fr) * 1987-02-03 1991-07-10 Bruderer Ag Entrainement pour presse
ATE64118T1 (de) * 1987-03-24 1991-06-15 Leinhaas Werner Schneid- und umformpresse mit hydro-mechanischem gelenkantrieb.
DE4411900C2 (de) * 1994-04-07 2002-07-04 Graebener Pressensysteme Gmbh Prägepresse, insbesondere Münzprägepresse
EP0765735B1 (fr) * 1995-09-27 2001-04-11 Bruderer Ag Presse poinçonneuse à genouillère
US6082255A (en) * 1998-07-13 2000-07-04 Sencorp Systems, Inc. Press apparatus with dynamic counterbalance and feed mechanism
WO2000003576A2 (fr) * 1998-07-13 2000-01-20 Koninklijke Philips Electronics N.V. Procede et appareil utilises pour la fabrication de dispositifs a semi-conducteurs
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
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
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

Family Cites Families (13)

* 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
CH273192A (de) * 1948-08-24 1951-01-31 May Otto Ing Dr Kniehebelpresse.
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
DE2428077B2 (de) * 1974-06-11 1980-04-24 Maschinenfabrik Weingarten Ag, 7987 Weingarten Vorrichtung für den Massenkraftausgleich des Stößels einer durch einen Kurbeltrieb angetriebenen Stanzmaschine
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
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
DD136024A1 (de) * 1977-12-09 1979-06-13 Klaus Miethbauer Antrieb fuer mechanische pressen
DE2804390A1 (de) * 1978-02-02 1979-08-09 Schuler Gmbh L Vorrichtung fuer einen intermittierenden betrieb bei einer nutenstanze

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0057741A1 (fr) * 1981-02-11 1982-08-18 L. SCHULER GmbH Entraînement de presse
WO2010088871A1 (fr) * 2009-02-06 2010-08-12 Egon Evertz K.G. (Gmbh & Co.) Presse à genouillère
CN101543858B (zh) * 2009-05-08 2010-09-29 南京理工大学 高速精密压力机
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

Also Published As

Publication number Publication date
JPS5633198A (en) 1981-04-03
BR8005261A (pt) 1981-03-04
EP0024699A3 (en) 1981-08-05
EP0024699B1 (fr) 1983-09-14
ATE4633T1 (de) 1983-09-15
DE2934286C2 (de) 1984-06-14
US4318325A (en) 1982-03-09
ES8103686A1 (es) 1981-03-16
DE2934286A1 (de) 1981-03-12
ES494444A0 (es) 1981-03-16

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