US3785282A - Mechanical press with toggle lever crank drive - Google Patents

Mechanical press with toggle lever crank drive Download PDF

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Publication number
US3785282A
US3785282A US00150982A US15097171A US3785282A US 3785282 A US3785282 A US 3785282A US 00150982 A US00150982 A US 00150982A US 15097171 A US15097171 A US 15097171A US 3785282 A US3785282 A US 3785282A
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US
United States
Prior art keywords
arm
slide
press
eccentric
main shaft
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
US00150982A
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English (en)
Inventor
I Kamelander
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.)
ZDARSKE STROJIRNY A SLEVARNY
Original Assignee
ZDARSKE STROJIRNY A SLEVARNY
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Publication date
Application filed by ZDARSKE STROJIRNY A SLEVARNY filed Critical ZDARSKE STROJIRNY A SLEVARNY
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Publication of US3785282A publication Critical patent/US3785282A/en
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
    • B30B1/26—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 cams, eccentrics, or cranks
    • B30B1/268—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 cams, eccentrics, or cranks using a toggle connection between driveshaft and press ram
    • 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
    • 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
    • B30B1/26—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 cams, eccentrics, or cranks
    • 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
    • B30B1/26—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 cams, eccentrics, or cranks
    • B30B1/263—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 cams, eccentrics, or cranks work stroke adjustment means
    • 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
    • Y10T74/00—Machine element or mechanism
    • Y10T74/18—Mechanical movements
    • Y10T74/18056—Rotary to or from reciprocating or oscillating

Definitions

  • ABSTRACT 30 Foreign Application priority Data Drive mechanism for the slide of a mechanical press
  • the object of the invention is a press of the type in which a motor drives through gears, clutch and flywheel a rotating main shaft which imparts through a toggle lever connecting rod a reciprocating motion to the slide, the press having main drive means which imparts the motion to the top toggle lever substantially in the direction of the slide motion while auxiliary drive means is provided for simultaneously imparting a motion perpendicular to the direction of the slide motion.
  • the combination of these two actions results in a reciprocating rectilinear motion of the slide having as its main feature a sharp slow-down on its down-stroke, whereby the speed of impact of the tool on the material is reduced; if required, such speed may be even reduced to zero.
  • the present invention eliminates the drawbacks of the prior art and is characterized in that the main drive means is adjustable for varying the motion of the top toggle lever of the connecting rod, and the toggle joint is controlled by a linkage system including adjustable elements from an auxiliary eccentric.
  • FIG. 1 is a diagrammatic elevational view ofthe drive mechanism and the related elements of the machine
  • FIG. 2 is a view in vertical section along the line II--II in FIG. 1;
  • FIG. 3 is a view similar to FIG. 2 but showing a multiple slide embodiment of the invention
  • FIG. 4 illustrates examples of courses or cycles of slide strokes at reduced impact speeds
  • FIG. illustrates diagrammatically the situation when the mechanism is adjusted according to the curve a in FIG. 4 and the slide position is at s, (minimum speed at the moment of impact);
  • FIG. 6 illustrates diagrammatically the situation when the mechanism is adjusted according to the curve 0 in FIG. 4 (the slide being at top dead center).
  • an axle 2 on which there is arranged for rotation a crank wheel 3 with a solid main eccentric 4 and a solid auxiliary eccentric 16.
  • an adjustable eccentric 5 having on its one face adjacent to the crank wheel 3 teeth 6 engaging with corre sponding teeth on an eccentric sleeve 7, the two sets of teeth being pressed into mesh by a nut 8 on a thread 9 formed on the hub of the crank wheel 3.
  • the eccentric 4 may thus be adjusted angularly with respect to crank wheel 3 and thus with respect to eccentric 5 by loosening nut 8, turning parts 3 and 4 relative to each other, and then tightening nut 8.
  • An auxiliary eccentric is fixedly mounted on the hub of the crank wheel 3.
  • the two-arm lever 20 is swingable on a pin 22 fixed in the machine frame 1, and its second or lower arm is connected by a pin 23 to a link 24, the: length of which can be varied by adjustment of a threaded rod 25.
  • the link 24 is connected with the joint pin ll 1 of the toggle lever connecting rod.
  • the radially highest zone of the auxiliary eccentric is preferably angularly displaced in relation to the radially highest zone of the main eccentric by 2040 in the direction opposite to the direction of rotation of the crank wheel 3.
  • the crank wheel 3 is driven in a way known per se from a motor (not shown) through. a flywheel, a clutch and brake, and possibly an intermediate shaft to a pinion 27 meshing with a ring gear on the crank wheel 3.
  • FIG. 3 shows an example of embodiment of a triplicate mechanism according to the present invention.
  • the numerals 14a, 14b denote additional slides, the driving mechanism of each slide being the same as that above-described in the case of a simple slide.
  • the linkage system 16-25 straightens the toggle levers 10, 12 of the connecting rod and the eccentrics 4, 5 arrive at approximately their top dead center position.
  • the working portion of the slide motion now takes place in the following 90-1 10 of rotation of the crank wheel.
  • the toggle levers 10, 12 of the connecting rod form an elbow and move the pin 11 to the right in FIG. 1 out of the axis passing through the pins 2, 13, so that a reduced speed of the downwardly moving slide is maintained for a certain time.
  • the length of the working portion of the slide stroke is varied.
  • the adjustment of the slide block 19 and thus the lengthening or shortening of the one, upper arm of the two-arm lever 20 provides for variation of the total length of slide stroke.
  • the threaded rod adjusts the length of the link 24, and thereby adjusts the position of the pin 11 in relation to the slide motion as produced by eccentrics 4, 5, i.e. the value of the impact speed of the slide at the beginning of the stroke is adjusted.
  • FIG. 4 there are shown examples of courses or cycles of slide strokes for various relative adjustments of the length of the working portion of the slide stroke and the length of total slide stroke.
  • the curve denotes the course for maximum total stroke H, and maximum working portion of stroke p,.
  • the curve C shows the maximum total slide H and nearly minimum working portion of the stroke s
  • the curve d shows a nearly minimum total length of the stroke H and maximum working portion of the stroke 5
  • the curve e demonstrates minimum total length of the stroke H and nearly minimum working portion of the stroke s
  • a mechanical press having a reciprocable slide, a rotatable main shaft, means for driving the main shaft, a main drive means for reciprocating the slide toward and away from the main shaft, said main drive means comprising an eccentric mounted on the main shaft to be driven thereby, a toggle having links connected by a pivotal toggle joint drivingly connected between the eccentric and the slide auxiliary drive means imparting motion to the pivotal toggle joint between the toggle links in a direction substantially perpendicular to the motion of the slide, and means for adjusting said main drive means by varying the motion of the upper toggle link.
  • a press as claimed in claim 1, wherein said means for controlling the pivotal toggle joint comprises a linkage system including adjustable elements.
  • a press as claimed in claim 2, wherein said linkage system comprises a two-arm lever having a first arm adjustable in length, a cam driven by the main shaft, and a cam follower cooperating with the cam for driving said first arm.
  • a press as claimed in claim 3, wherein said first arm of the two-arm lever comprises a slide block and an adjusting screw.
  • a press as claimed in claim 3, wherein said linkage system comprises a link with length adjustment pivotally connected between the second arm of the two-arm lever and the pivotal toggle joint.
  • said linkage system comprises a two-arm lever having a first arm adjustable in length by a slide block and an adjusting screw, and a link with length adjustment by a threaded rod, said link being pivotally connected between the second arm of the two-arm lever and the pivotal toggle joint.
  • main drive means includes a combined eccentric comprising a second eccentric upon which said first-recited eccentric is mounted and with respect to which it is angularly

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Press Drives And Press Lines (AREA)
  • Transmission Devices (AREA)
US00150982A 1970-06-10 1971-06-08 Mechanical press with toggle lever crank drive Expired - Lifetime US3785282A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CS4061A CS148900B1 (enrdf_load_stackoverflow) 1970-06-10 1970-06-10

Publications (1)

Publication Number Publication Date
US3785282A true US3785282A (en) 1974-01-15

Family

ID=5382492

Family Applications (1)

Application Number Title Priority Date Filing Date
US00150982A Expired - Lifetime US3785282A (en) 1970-06-10 1971-06-08 Mechanical press with toggle lever crank drive

Country Status (6)

Country Link
US (1) US3785282A (enrdf_load_stackoverflow)
CH (1) CH537274A (enrdf_load_stackoverflow)
CS (1) CS148900B1 (enrdf_load_stackoverflow)
DE (1) DE2127289C3 (enrdf_load_stackoverflow)
FR (1) FR2097838A5 (enrdf_load_stackoverflow)
GB (1) GB1319391A (enrdf_load_stackoverflow)

Cited By (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3929000A (en) * 1973-11-15 1975-12-30 Bruno Kralowetz High-speed short-stroke forging press
US4008525A (en) * 1976-04-19 1977-02-22 Ball Brothers Service Corporation Apparatus for processing ware
US4079632A (en) * 1975-08-14 1978-03-21 Kabushiki Kaisha Toyoda Jidoshokki Seisakusho Mechanism for driving the nipper shaft of a comber
US4156387A (en) * 1974-09-03 1979-05-29 Bruderer Ag Apparatus for mass compensation at a machine driven by a crank drive
US4785732A (en) * 1986-06-06 1988-11-22 L. Schuler Gmbh Push rod stroke adjustment device for a press
US4791830A (en) * 1986-02-17 1988-12-20 Mitsubishi Jukogyo Kabushiki Kaisha Balancer of reciprocating machine
US4858835A (en) * 1987-11-26 1989-08-22 Axis S.P.A. Equipment for the actuation of needles for the realization of electric motors field windings
WO1990009762A1 (en) * 1989-02-22 1990-09-07 Physical Sciences Inc. Acoustic impact delivery catheter with end cap
US4967586A (en) * 1988-07-23 1990-11-06 Gebr. Hilgeland Gmbh And Co. Upsetting press for upsetting or swaging wire segments of predetermined lengths into balls or the like
US5246447A (en) * 1989-02-22 1993-09-21 Physical Sciences, Inc. Impact lithotripsy
DE4308475A1 (de) * 1993-03-17 1994-09-22 Pressen Engineering Essen Gmbh Antrieb für den Stößel einer Schnittpresse oder Umformmaschine
EP0718091A1 (de) * 1994-12-23 1996-06-26 SCHULER PRESSEN GmbH & Co. Münzprägepresse
US6012321A (en) * 1995-04-12 2000-01-11 Murata Kikai Kabushiki Kaisha Driving device for a pressing machine
EP0972630A3 (en) * 1998-07-17 2000-04-26 Kabushiki Kaisha Yamada Dobby Press machine
US6164147A (en) * 1999-02-05 2000-12-26 The Minster Machine Company Adjustable link motion press
US6311612B1 (en) 1999-07-12 2001-11-06 The Minster Machine Company Link adjustment member
US20020104364A1 (en) * 2000-12-29 2002-08-08 Juergen Fahrenbach Press having a slide
US6564668B1 (en) * 1998-11-13 2003-05-20 Colombo Fillippetti S.P.A. Small sized driver mechanism with double spherical cam, for mechanical automatons
US6708609B1 (en) 1999-07-29 2004-03-23 Schuler Pressen Gmbh & Co. Kg Press product line
US20040168502A1 (en) * 2003-03-01 2004-09-02 Wolfgang Niemann Toggle press
US20110083568A1 (en) * 2008-06-18 2011-04-14 Fahrenbach Juergen Direct drive for a press
US20130247698A1 (en) * 2012-03-23 2013-09-26 Schuler Pressen Gmbh Press drive with several modes of operating a press and method for operating a press drive
WO2014063841A1 (de) * 2012-10-25 2014-05-01 Modus One Gmbh Antriebsvorrichtung
CN104647789A (zh) * 2015-02-26 2015-05-27 江苏扬力集团有限公司 一种多连杆机械压力机传动结构
EP2998107A1 (de) * 2014-08-15 2016-03-23 Georg Maschinentechnik GmbH & Co. KG Pressenantrieb für eine umformvorrichtung
US20160347017A1 (en) * 2015-05-29 2016-12-01 Andritz Ag Device for compacting stacked sheets or pulp slabs
US20160347016A1 (en) * 2015-05-29 2016-12-01 Andritz Ag Device for compacting pulp flocks
CN106827610A (zh) * 2017-04-17 2017-06-13 扬力集团股份有限公司 一种多连杆压力机大行程传动机构
US20210372507A1 (en) * 2017-12-08 2021-12-02 Bes Isletme Arge Ve Muhendislik Cozumleri Sanayi Ticaret Limited Sirketi Variable displacement mechanism output movement of which can be lowered to zero stroke
IT202100013343A1 (it) * 2021-05-24 2022-11-24 Jofa S R L Pressa elettrica per la caratterizzazione di ammortizzatori di veicoli

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4107973A (en) * 1977-08-04 1978-08-22 Gulf & Western Manufacturing Company Press drive mechanism
DE4130004A1 (de) * 1991-09-10 1993-03-11 Erfurt Umformtechnik Gmbh Antrieb fuer den stoessel von mechanischen pressen
DE19846951A1 (de) * 1998-10-12 2000-04-20 Strip S D O O Podjetje Za Svet Presse mit Kniehebelantrieb
DE19935655B4 (de) * 1999-07-29 2005-09-08 Schuler Pressen Gmbh & Co. Kg Pressenbaureihe mit Vorsatzgetriebe
DE102012102527B4 (de) 2012-03-23 2014-10-09 Schuler Pressen Gmbh Pressenantrieb mit mehreren Arbeitsbereichen

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2280587A (en) * 1941-03-20 1942-04-21 Bliss E W Co Press
US2781015A (en) * 1952-06-11 1957-02-12 Cleveland Crane Eng Draw press
US3174347A (en) * 1961-04-20 1965-03-23 May Pressenbau Ltd Toggle lever system
US3426635A (en) * 1965-08-27 1969-02-11 Pullmax Ab Arrangement in sheet metal working machines,particularly nibbling machines

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2280587A (en) * 1941-03-20 1942-04-21 Bliss E W Co Press
US2781015A (en) * 1952-06-11 1957-02-12 Cleveland Crane Eng Draw press
US3174347A (en) * 1961-04-20 1965-03-23 May Pressenbau Ltd Toggle lever system
US3426635A (en) * 1965-08-27 1969-02-11 Pullmax Ab Arrangement in sheet metal working machines,particularly nibbling machines

Cited By (39)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3929000A (en) * 1973-11-15 1975-12-30 Bruno Kralowetz High-speed short-stroke forging press
US4156387A (en) * 1974-09-03 1979-05-29 Bruderer Ag Apparatus for mass compensation at a machine driven by a crank drive
US4079632A (en) * 1975-08-14 1978-03-21 Kabushiki Kaisha Toyoda Jidoshokki Seisakusho Mechanism for driving the nipper shaft of a comber
US4008525A (en) * 1976-04-19 1977-02-22 Ball Brothers Service Corporation Apparatus for processing ware
US4791830A (en) * 1986-02-17 1988-12-20 Mitsubishi Jukogyo Kabushiki Kaisha Balancer of reciprocating machine
US4785732A (en) * 1986-06-06 1988-11-22 L. Schuler Gmbh Push rod stroke adjustment device for a press
US4858835A (en) * 1987-11-26 1989-08-22 Axis S.P.A. Equipment for the actuation of needles for the realization of electric motors field windings
US4967586A (en) * 1988-07-23 1990-11-06 Gebr. Hilgeland Gmbh And Co. Upsetting press for upsetting or swaging wire segments of predetermined lengths into balls or the like
WO1990009762A1 (en) * 1989-02-22 1990-09-07 Physical Sciences Inc. Acoustic impact delivery catheter with end cap
US5246447A (en) * 1989-02-22 1993-09-21 Physical Sciences, Inc. Impact lithotripsy
DE4308475A1 (de) * 1993-03-17 1994-09-22 Pressen Engineering Essen Gmbh Antrieb für den Stößel einer Schnittpresse oder Umformmaschine
EP0718091A1 (de) * 1994-12-23 1996-06-26 SCHULER PRESSEN GmbH & Co. Münzprägepresse
US6012321A (en) * 1995-04-12 2000-01-11 Murata Kikai Kabushiki Kaisha Driving device for a pressing machine
EP0972630A3 (en) * 1998-07-17 2000-04-26 Kabushiki Kaisha Yamada Dobby Press machine
US6148720A (en) * 1998-07-17 2000-11-21 Kabushiki Kaisha Yamada Dobby Press machine
US6564668B1 (en) * 1998-11-13 2003-05-20 Colombo Fillippetti S.P.A. Small sized driver mechanism with double spherical cam, for mechanical automatons
US6164147A (en) * 1999-02-05 2000-12-26 The Minster Machine Company Adjustable link motion press
GB2346339B (en) * 1999-02-05 2003-08-27 Minster Machine Co Adjustable drive mechanism
US6606941B2 (en) 1999-07-12 2003-08-19 Minster Machine Company, The Method of altering the drive mechanism of a mechanical press
US6311612B1 (en) 1999-07-12 2001-11-06 The Minster Machine Company Link adjustment member
US6708609B1 (en) 1999-07-29 2004-03-23 Schuler Pressen Gmbh & Co. Kg Press product line
US20020104364A1 (en) * 2000-12-29 2002-08-08 Juergen Fahrenbach Press having a slide
US6860198B2 (en) * 2000-12-29 2005-03-01 Schuler Pressen Gmbh & Co. Press having a slide
US20040168502A1 (en) * 2003-03-01 2004-09-02 Wolfgang Niemann Toggle press
US7011019B2 (en) * 2003-03-01 2006-03-14 Reinhold Schulte Toggle press
US8776682B2 (en) * 2008-06-18 2014-07-15 Schuler Pressen Gmbh & Co. Kg Direct drive for a press
US20110083568A1 (en) * 2008-06-18 2011-04-14 Fahrenbach Juergen Direct drive for a press
US20130247698A1 (en) * 2012-03-23 2013-09-26 Schuler Pressen Gmbh Press drive with several modes of operating a press and method for operating a press drive
US9770879B2 (en) * 2012-03-23 2017-09-26 Schuler Pressen Gmbh Press drive with several modes of operating a press and method for operating a press drive
WO2014063841A1 (de) * 2012-10-25 2014-05-01 Modus One Gmbh Antriebsvorrichtung
EP2998107A1 (de) * 2014-08-15 2016-03-23 Georg Maschinentechnik GmbH & Co. KG Pressenantrieb für eine umformvorrichtung
CN104647789A (zh) * 2015-02-26 2015-05-27 江苏扬力集团有限公司 一种多连杆机械压力机传动结构
US20160347017A1 (en) * 2015-05-29 2016-12-01 Andritz Ag Device for compacting stacked sheets or pulp slabs
US20160347016A1 (en) * 2015-05-29 2016-12-01 Andritz Ag Device for compacting pulp flocks
CN106182871A (zh) * 2015-05-29 2016-12-07 安德里特斯公开股份有限公司 用于将浆絮压实的装置
CN106182870A (zh) * 2015-05-29 2016-12-07 安德里特斯公开股份有限公司 用于将浆的堆叠片压实的装置
CN106827610A (zh) * 2017-04-17 2017-06-13 扬力集团股份有限公司 一种多连杆压力机大行程传动机构
US20210372507A1 (en) * 2017-12-08 2021-12-02 Bes Isletme Arge Ve Muhendislik Cozumleri Sanayi Ticaret Limited Sirketi Variable displacement mechanism output movement of which can be lowered to zero stroke
IT202100013343A1 (it) * 2021-05-24 2022-11-24 Jofa S R L Pressa elettrica per la caratterizzazione di ammortizzatori di veicoli

Also Published As

Publication number Publication date
CH537274A (de) 1973-05-31
DE2127289C3 (de) 1974-11-21
DE2127289B2 (de) 1974-04-25
FR2097838A5 (enrdf_load_stackoverflow) 1972-03-03
GB1319391A (en) 1973-06-06
DE2127289A1 (de) 1971-12-16
CS148900B1 (enrdf_load_stackoverflow) 1973-05-24

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