EP0057741A1 - Entraînement de presse - Google Patents

Entraînement de presse Download PDF

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Publication number
EP0057741A1
EP0057741A1 EP81100932A EP81100932A EP0057741A1 EP 0057741 A1 EP0057741 A1 EP 0057741A1 EP 81100932 A EP81100932 A EP 81100932A EP 81100932 A EP81100932 A EP 81100932A EP 0057741 A1 EP0057741 A1 EP 0057741A1
Authority
EP
European Patent Office
Prior art keywords
press
knee joint
drive according
press drive
frame
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
EP81100932A
Other languages
German (de)
English (en)
Other versions
EP0057741B1 (fr
Inventor
Hans-Martin Dommer
Alfred Bareis
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 EP81100932A priority Critical patent/EP0057741B1/fr
Priority to DE8181100932T priority patent/DE3165146D1/de
Priority to AT81100932T priority patent/ATE8756T1/de
Priority to BR8200650A priority patent/BR8200650A/pt
Priority to JP57018993A priority patent/JPS57152398A/ja
Priority to ES509467A priority patent/ES509467A0/es
Priority to US06/348,015 priority patent/US4419929A/en
Publication of EP0057741A1 publication Critical patent/EP0057741A1/fr
Application granted granted Critical
Publication of EP0057741B1 publication Critical patent/EP0057741B1/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 for a high-speed press, in which a pair of counter-rotating eccentric shafts driven in engagement with one another is mounted in the press head piece, the eccentrics being connected to a plunger via symmetrically arranged connecting elements, and the reciprocating masses correspondingly counter-rotating acting mass balance weights are provided.
  • 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 additional handlebars and double levers, which enable complete dynamic mass balancing.
  • 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 initially demands, a minimum of bearings in the power flow, namely three per knee joint, no components stressed to bend, whereby the masses to be moved are reduced and a lighter design can be achieved.
  • the press drive according to the invention thus achieves high 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.
  • the arrangement of the two eccentric shafts makes it easy to balance the rotating masses; Due to the construction with two eccentric shafts and connecting rods, the press is largely insensitive to eccentric loads during cutting.
  • 1 and 2 is constructed symmetrically to two crank or eccentric shafts 10.
  • Two connecting rods 11 are articulated on the eccentric shafts 10.
  • the connecting rods 11 are connected via extensions 17, 18 to first knee joints 19, 20 and 21, 22 arranged almost horizontally.
  • 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 knees 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 arcs 35, 36 on arcs that almost correspond to the tangents placed on the arcs or are guided in frame-fixed - see FIG 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 connected directly to third knee joints 42, 43 and 44, 45 arranged almost vertically.
  • the plunger 39 is articulated on the links 43, 45, while the links 42, 44 are supported on the plunger vertical 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 connecting rods 11 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 ben, which can be designed either motor or manually movable.
  • the stroke adjustment device is formed, 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 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 a total of 31 bearing points must be arranged in the power flow, while one comparable press drive according to the invention only six (6) hinge points, ie 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 appropriate dimensioning of the mass balance weights 33, 34, the link and the brackets of the press drive is mass balanced.
  • the second knee joints 25, 26 and 27, 28 are moved exactly in synchronism with 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 opposite directions but in opposite directions.
  • the stroke of the mass balance weights 33, 34 hinged to the second knee joints 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)
  • Vehicle Body Suspensions (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)
  • Flanged Joints, Insulating Joints, And Other Joints (AREA)
EP81100932A 1981-02-11 1981-02-11 Entraînement de presse Expired EP0057741B1 (fr)

Priority Applications (7)

Application Number Priority Date Filing Date Title
EP81100932A EP0057741B1 (fr) 1981-02-11 1981-02-11 Entraînement de presse
DE8181100932T DE3165146D1 (en) 1981-02-11 1981-02-11 Press drive
AT81100932T ATE8756T1 (de) 1981-02-11 1981-02-11 Pressenantrieb.
BR8200650A BR8200650A (pt) 1981-02-11 1982-02-08 Acionamento de prensa
JP57018993A JPS57152398A (en) 1981-02-11 1982-02-10 Driving device for press
ES509467A ES509467A0 (es) 1981-02-11 1982-02-10 "una disposicion de accionamiento para prensas rapidas".
US06/348,015 US4419929A (en) 1981-02-11 1982-02-11 Press drive

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP81100932A EP0057741B1 (fr) 1981-02-11 1981-02-11 Entraînement de presse

Publications (2)

Publication Number Publication Date
EP0057741A1 true EP0057741A1 (fr) 1982-08-18
EP0057741B1 EP0057741B1 (fr) 1984-08-01

Family

ID=8187569

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81100932A Expired EP0057741B1 (fr) 1981-02-11 1981-02-11 Entraînement de presse

Country Status (7)

Country Link
US (1) US4419929A (fr)
EP (1) EP0057741B1 (fr)
JP (1) JPS57152398A (fr)
AT (1) ATE8756T1 (fr)
BR (1) BR8200650A (fr)
DE (1) DE3165146D1 (fr)
ES (1) ES509467A0 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2234196A (en) * 1989-07-22 1991-01-30 Verson Hme Ltd Press and method of working material

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4920782A (en) * 1987-02-03 1990-05-01 Bruderer Ag Press drive
DE3770624D1 (de) * 1987-03-24 1991-07-11 Leinhaas Werner Schneid- und umformpresse mit hydro-mechanischem gelenkantrieb.
US4926671A (en) * 1988-12-05 1990-05-22 Hill James B Press brake
JP2983247B2 (ja) * 1990-04-23 1999-11-29 株式会社小森コーポレーション 折機のチョッパ折装置
JP2002520867A (ja) * 1998-07-13 2002-07-09 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ 半導体装置を製造する方法及び装置
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
DE102007019963A1 (de) * 2007-04-27 2008-10-30 Sms Demag Ag Schneidvorrichtung
CN101799065A (zh) * 2010-02-10 2010-08-11 华中科技大学 一种多连杆压力传动机构
CN102284660A (zh) * 2010-06-21 2011-12-21 南京农业大学 一种高速对称等长肘杆压力机的动平衡机构
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
US11479032B2 (en) * 2019-05-27 2022-10-25 Bobst Mex Sa Platen press with a press toggle mechanism
CN110523901B (zh) * 2019-09-11 2021-03-23 上海应用技术大学 一种三点式可替换滑块压力机

Citations (5)

* 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
US2808736A (en) * 1952-02-07 1957-10-08 Jackson Hydraulic Machine Co I Counterbalancing means for punch press
DE2428077A1 (de) * 1974-06-11 1976-01-02 Weingarten Ag Maschf Vorrichtung fuer den massenausgleich des stoessels einer durch einen kurbeltrieb angetriebenen maschine
DE2804390A1 (de) * 1978-02-02 1979-08-09 Schuler Gmbh L Vorrichtung fuer einen intermittierenden betrieb bei einer nutenstanze
EP0024699A2 (fr) * 1979-08-24 1981-03-11 L. SCHULER GmbH Entraînement de presse

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5251661Y2 (fr) * 1971-09-10 1977-11-24
JPS5623259Y2 (fr) * 1974-04-13 1981-06-01
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
JPS5642224Y2 (fr) * 1977-11-29 1981-10-02
JPS5743823Y2 (fr) * 1978-03-08 1982-09-27
JPH064693Y2 (ja) * 1986-11-19 1994-02-09 ヤンマー農機株式会社 ロ−ルベ−ラのベ−ル取出装置

Patent Citations (8)

* 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
US2808736A (en) * 1952-02-07 1957-10-08 Jackson Hydraulic Machine Co I Counterbalancing means for punch press
DE2428077A1 (de) * 1974-06-11 1976-01-02 Weingarten Ag Maschf Vorrichtung fuer den massenausgleich des stoessels einer durch einen kurbeltrieb angetriebenen maschine
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
DE2804390A1 (de) * 1978-02-02 1979-08-09 Schuler Gmbh L Vorrichtung fuer einen intermittierenden betrieb bei einer nutenstanze
GB2013562A (en) * 1978-02-02 1979-08-15 Schuler Gmbh L Device for use in intermittent operation of a notching press
EP0024699A2 (fr) * 1979-08-24 1981-03-11 L. SCHULER GmbH Entraînement de presse
DE2934286A1 (de) * 1979-08-24 1981-03-12 L. Schuler GmbH, 7320 Göppingen Pressenantrieb.

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2234196A (en) * 1989-07-22 1991-01-30 Verson Hme Ltd Press and method of working material
GB2234196B (en) * 1989-07-22 1993-02-17 Verson Hme Ltd Press and method of working material

Also Published As

Publication number Publication date
BR8200650A (pt) 1982-12-14
US4419929A (en) 1983-12-13
JPS57152398A (en) 1982-09-20
DE3165146D1 (en) 1984-09-06
ES8301766A1 (es) 1982-12-16
ATE8756T1 (de) 1984-08-15
EP0057741B1 (fr) 1984-08-01
ES509467A0 (es) 1982-12-16

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