EP1207039B1 - Presse - Google Patents

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Publication number
EP1207039B1
EP1207039B1 EP20010126868 EP01126868A EP1207039B1 EP 1207039 B1 EP1207039 B1 EP 1207039B1 EP 20010126868 EP20010126868 EP 20010126868 EP 01126868 A EP01126868 A EP 01126868A EP 1207039 B1 EP1207039 B1 EP 1207039B1
Authority
EP
European Patent Office
Prior art keywords
crankshaft
oscillators
slide
oscillator
press machine
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
EP20010126868
Other languages
English (en)
French (fr)
Other versions
EP1207039A2 (de
EP1207039A3 (de
Inventor
Akihiro Yoshida
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.)
Yamada Dobby Co Ltd
Original Assignee
Yamada Dobby Co Ltd
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 Yamada Dobby Co Ltd filed Critical Yamada Dobby Co Ltd
Publication of EP1207039A2 publication Critical patent/EP1207039A2/de
Publication of EP1207039A3 publication Critical patent/EP1207039A3/de
Application granted granted Critical
Publication of EP1207039B1 publication Critical patent/EP1207039B1/de
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
    • 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
    • B30B1/02—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 lever mechanism
    • B30B1/06—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 lever 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

Definitions

  • the present invention relates to a press machine which transmits power from a crankshaft supported on a frame to a slide by a power transmission.
  • DE 29 00 901 discloses a press machine in which two connections are arranged on a crank shaft which comprises two opposite eccentric portions. The rotation of the crank shaft is transformed into a reciprocating movement of the bell-crank-type oscillators which drive the slide. Both oscillators are suspended within the frame on a linear displacement drive to adjust the stroke length, and on eccentric portions of shafts which are supported within the suspension to provide a quick release of the slide.
  • JP-A-07132400 discloses a press machine in which a single connection is arranged on a crank shaft. The rotation of the crank shaft is transformed into an oscillating movement of an oscillator via a scissor type linking arrangement to oscillate a slide, wherein the stroke length can be adjusted by displacement of the scissor linking arrangement via a linear drive.
  • the eccentric portion of the support shaft acts as a fulcrum for oscillation of the oscillator connected therewith.
  • the connection is reciprocated, thereby oscillating the oscillator about the eccentric portion of the support shaft.
  • the oscillation of the oscillator is a motion about a horizontally extending axis and is transmitted to the slide by the connecting link. This makes the slide move vertically.
  • the stroke length adjusting mechanism is simplified, and the rotation phase of the crankshaft is not displaced even if the stroke length is changed.
  • the press machine can further comprise a slider disposed on the frame so as to move vertically and pivotally connected with the oscillator and the connection.
  • the oscillator can extend from a connecting portion with the connection to a connecting portion with the support shaft through a connecting portion with the connecting link.
  • the power transmission can further include: a second support shaft supported on the frame so as to angularly rotate about an axis parallel to the rotation axis of the crankshaft and having a second eccentric portion; a second oscillator supported on the second eccentric portion so as to oscillate and pivotally connected with the connection so as to oscillate with rotation of the crankshaft; and a second connecting link pivotally connected with the second oscillator and the slide so as to have the slide perform vertical motion with the oscillation of the second oscillator.
  • the press machine can further comprise: a balancing weight disposed on the frame so as to move vertically; and a connector for connecting the balancing weight with the oscillator so as to have the balancing weight perform vertical motion at a phase difference of 180° with respect to vertical motion of the slide. This makes the vertical motion of the slide and the balancing weight opposite to offset unbalanced force attributable to the vertical motion of the slide and the balancing weight.
  • the balancing weight is disposed above the crankshaft and the oscillator, and the oscillator extends from the connecting portion with the connection to the connecting portion with the connector through the connecting portion with the connecting link and the connecting portion with the support shaft in this order.
  • the power transmission further includes: a second support shaft supported on the frame so as to rotate angularly about an axis parallel to the rotation axis of the crankshaft and having an eccentric portion; a second oscillator supported on the eccentric portion of the support shaft so as to oscillate and pivotally connected with the connection so as to oscillate with rotation of the crankshaft; and a second connecting link pivotally connected with the second oscillator and the slide so as to have the slide perform vertical motion with oscillation of the second oscillator.
  • the press machine 10 comprises a lower frame 12 for mounting a drag and an upper frame 14 supported on the lower frame 12.
  • a crankshaft 16 is supported on the upper frame 14 so as to rotate about a horizontally extending axis and receives rotation of a flywheel 18 shown in Fig. 3 .
  • the flywheel 18 is rotated by a motor not shown such as an electric motor.
  • a so-called slide 20 supporting the cope is assembled into the lower ends of a pair of connecting rods, i.e., plungers 22 which extend through the lower end portion of the upper frame 14 so as to move vertically. Both plungers 22 extend upward in parallel from both end portions of the slide 20 and are reciprocated vertically by a power transmission 30 with rotation of the crankshaft 16. This makes the slide 20 reciprocate in the vertical direction.
  • the power transmission 30 includes: a pair of support shafts 32 supported on the frame 14 so as to rotate angularly about an axis parallel to the rotation axis of the crankshaft; an oscillator 34 supported on each support shaft 32 so as to oscillate, i.e., swing a connector 36 for connecting both oscillators 34 with the crankshaft 16 so as to have both oscillators 34 oscillate synchronously with rotation of the crankshaft 16; a pair of sliders 38 disposed on the frame 14 so as to move vertically; and a connecting link 40 for connecting the oscillator 34 with the slide 20 so as to move the slide 20 vertically with oscillation of the oscillator 34.
  • the support shafts 32 extend horizontally in parallel at an interval in a direction to intersect the rotation axis of the crankshaft 16 and have an eccentric portion 32a, respectively, made eccentric with respect to the rotation axis of the support shaft 32. Though not shown, each support shaft 32 is hindered from angularly rotating about its rotation axis by a suitable stopper such as a lock screw.
  • Each oscillator 34 has a shape of an oscillating lever and is supported on the corresponding eccentric portion 32a so as to oscillate. Both oscillators 34 extend from the sides of the slider 38 in the opposite direction to each other.
  • the connector 36 is connected at its upper end portion with the eccentric portion of the crankshaft so as to move pivotally (that is, connected pivotally).
  • Each slider 38 is located below the crankshaft and is disposed so as to move vertically on a guide portion 42 formed in the frame 14, and is prevented from moving horizontally.
  • Each guide portion 42 in the illustrated example, is a guide hole extending vertically.
  • One end portions of both oscillating levers 32 and the lower end portion of the connection 36 are connected with each other and with the slider 38 by a pivot 44.
  • Each connecting link 40 is connected with a part of the oscillator 34 between the support shaft 32 and the pivot 44 by a pivot 46, and is connected at its lower end portion with the upper end of the plunger 22 by a pivot 48.
  • the press machine 10 also comprises a balancer 50 for balancing unbalanced force attributable to vertical motion of the slide 20.
  • the balancer 50 includes: a balancing weight 52 disposed, above the crankshaft 16 and both oscillators 34, on the frame 14 so as to move vertically; a plurality of guide portions 54 for restricting reciprocal motion of the balancing weight 52 to the vertical direction; and a pair of connecting pieces or connectors 56 individually corresponding to the oscillators.
  • Each connector 56 is connected at its lower end portion with the corresponding oscillator 34 by a pivot 58 and connected at its upper end portion with the balancing weight 52 by a pivot 60.
  • the reciprocal motion of the balancing weight 52 can be restricted to the vertical direction by using one or more guide portions 54.
  • the pivot connecting point of the oscillator 34 and the connecting link 40 by the pivot 46 and the pivot connecting point of the oscillator 34 and the connector 56 by the pivot 58 are at symmetrical positions with respect to the pivot connecting point of the oscillator 34 with the support shaft 32.
  • Pivots 44, 46, 48, 58, 60, etc., pivotally connecting or supporting a plurality of members extend horizontally in parallel to the rotation axis of the crankshaft 16. Therefore, pivotal motion of the members mutually connected by each pivot or the members supported by each pivot is a motion about a horizontal extending axis.
  • connection 36 and the slider 38 are reciprocated vertically with the rotation of the crankshaft 16 to oscillate both oscillators 34 synchronously and vertically move both connecting links 40 synchronously.
  • the slide 20 is vertically reciprocated.
  • the pivot connecting point of the oscillator 34 and the connecting link 40 is positioned between the pivot connecting point of the oscillator 34 and the support shaft 32 and the pivot connecting point of the oscillator 34 and the connection 36, the power to be transmitted to the slide 20 is increased, and the press machine 10 functions as a power press machine. Also, since reciprocation of the slider 38 is regulated to the vertical direction by the guide portions 42, oscillation of both oscillators 34 correctly synchronizes, thereby surely preventing horizontal oscillation of the slide 20 and the balancing weight 52.
  • both connectors 56 are vertically moved synchronously, so that the balancing weight 52 is reciprocated vertically, following the oscillation of both oscillators 34. At this time, the reciprocation of the balancing weight 52 is restricted to vertical reciprocation by the guide portions 54.
  • the balancing weight 52 is moved vertically by a phase difference of 180° with respect to the vertical motion of the slide 20 so as to be downward when the slide 20 is moved upward and to be upward when the slide 20 is moved downward. Therefore, unbalanced force attributable to the vertical motion of the slide 20 is offset by the balancing weight 52.
  • the support shaft 32 can be manually rotated after releasing the rotation with respect to the frame 14 stopped by the stopper.
  • Fig. 6 shows changes of the strokes L 1 and L 2 of the slide 22 with respect to the stroke L 0 of the connection 36 at the time when the support shaft 32 is angularly rotated to the position shown in (A) and the position shown in (B).
  • the eccentric radius "r" shows the amount of eccentricity of the eccentric portion 32a with respect to the rotation axis of the support shaft 32
  • the reference numeral 62 shows the axis of the eccentric portion 32a.
  • the stroke length can be changed without angularly rotating the crankshaft 16 with respect to the power transmission 30, and even if the stroke length is changed, the rotation phase of the crankshaft 16 is not displaced.
  • the balancer 50 is provided, but it is not necessary to do so like the press machine 70 shown in Fig. 7 . Also, while two sets of the support shaft 32, the oscillator 34, the connecting link 40 and the connector 56 are employed, it is possible to employ one set of the support shaft 32, the oscillator 34, the connecting link 40 and the connector 56.

Landscapes

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

Claims (5)

  1. Presse mit einem Rahmen (14), einer Kurbelwelle (16) mit einem Exzenterabschnitt und im Rahmen (14) so angeordnet, dass sie um eine horizontal verlaufende Achse drehbar ist, einem Stempel (40), der so im Rahmen angeordnet ist, dass er vertikal bewegbar ist, und einer Kraftübertragung (30) zum Übertragen der Rotation der Kurbelwelle (16) auf den Stempel (20),
    wobei die Kraftübertragung (30) folgendes umfasst: eine erste und eine zweite Stützwelle (32), welche so im Rahmen (14) gehalten wird, dass sie winkelig um eine Achse parallel zur Drehachse der Kurbelwelle (16) verdrehbar ist; eine erste und eine zweite Schwinge (34), die jeweils so von der ersten und zweiten Stützwelle getragen werden, dass sie hin- und herschwingen, einem einzelnen Koppler (36), welcher die erste und die zweite Schwinge mit dem Exzenterabschnitt der Kurbelwelle verbindet, so dass die erste und die zweite Schwinge bei Rotation der Kurbelwelle hin- und herschwingen, und einem ersten und zweiten Verbindungsglied (40), welche jeweils schwenkbar an der ersten und zweiten Schwinge und dem Stempel (20) angelenkt sind, so dass sie den Stempel beim Hin- und Herschwingen der ersten und zweiten Schwinge in eine vertikale Bewegung versetzen, wobei
    die erste und zweite Stützwelle (32) jeweils einen ersten bzw. zweiten Exzenterabschnitt (32a) aufweisen, die erste und zweite Schwinge (34) jeweils mit dem ersten bzw. zweiten Exzenterabschnitt (32a) der ersten bzw. zweiten Stützwelle (32) verbunden sind, so dass sie hin- und herschwingen, und über den Koppler (36) auch mit dem Exzenterabschnitt (16) der Kurbelwelle (16) verbunden sind, und jedes des ersten und zweiten Verbindungsgliedes (40) jeweils an einem Verbindungsabschnitt (46) der ersten und zweiten Schwinge angelenkt ist, welche zwischen dem verbindenden Exzenterabschnitt (32a) der Stützwelle (32) mit der Schwinge (34) und einem Verbindungsabschnitt (44) des Kopplers (36) mit der Schwinge (34) liegt.
  2. Presse nach Anspruch 1, ferner aufweisend einen Schlitten (38), der im Rahmen (14) so angeordnet ist, dass er Vertikalbewegungen ausführt und schwenkbar an der ersten und zweiten Schwinge (34) und dem Koppler (36) angelenkt ist.
  3. Presse nach Anspruch 1 oder 2, bei welcher die erste und zweite Schwinge (34) jeweils von einem Verbindungsbereich mit dem ersten Koppler (36) über den Verbindungsbereich mit dem ersten bzw. zweiten Verbindungsglied (40) zu einem Verbindungsbereich mit der ersten bzw. der zweiten Stützwelle (32) verlaufen.
  4. Presse nach einem der Ansprüche 1 bis 3, ferner aufweisend ein Ausgleichsgewicht (52), welches im Rahmen (14) so angeordnet ist, dass es Vertikalbewegungen ausführt, und einen ersten und zweiten Koppler (56) zum Verbinden des Ausgleichsgewichts mit der ersten und zweiten Schwinge (34), so dass das Ausgleichsgewicht eine Vertikalbewegung mit einer Phasendifferenz von 180° zur Vertikalbewegung des Stempels (20) ausführt.
  5. Presse nach Anspruch 4, bei welcher das Ausgleichsgewicht (52) oberhalb der Kurbelwelle (16) und der ersten und zweiten Schwinge (34) angeordnet ist und
    bei welcher die erste und zweite Schwinge (34) jeweils von einem Verbindungsabschnitt mit dem Koppler (36) zu einem entsprechenden Verbindungsabschnitt mit dem ersten und zweiten Verbinder (56) verlaufen, und zwar zuerst über einen Verbindungsabschnitt mit dem ersten und zweiten Verbindungselement (40) und dann über einen Verbindungsabschnitt der ersten und zweiten Stützwelle (32).
EP20010126868 2000-11-13 2001-11-12 Presse Expired - Lifetime EP1207039B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2000345162A JP3667227B2 (ja) 2000-11-13 2000-11-13 プレス機
JP2000345162 2000-11-13

Publications (3)

Publication Number Publication Date
EP1207039A2 EP1207039A2 (de) 2002-05-22
EP1207039A3 EP1207039A3 (de) 2003-01-15
EP1207039B1 true EP1207039B1 (de) 2009-05-06

Family

ID=18819242

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20010126868 Expired - Lifetime EP1207039B1 (de) 2000-11-13 2001-11-12 Presse

Country Status (3)

Country Link
EP (1) EP1207039B1 (de)
JP (1) JP3667227B2 (de)
DE (1) DE60138600D1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU192634U1 (ru) * 2019-06-17 2019-09-24 Федеральное государственное бюджетное образовательное учреждение высшего образования "Сибирский государственный индустриальный университет", ФГБОУ ВО "СибГИУ" Кривошипно-ползунный механизм пресса

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004298952A (ja) * 2003-04-01 2004-10-28 Yamada Dobby Co Ltd プレス機
EP2008799A1 (de) * 2007-06-28 2008-12-31 Bruderer Ag Stanzpresse
JP5412185B2 (ja) * 2009-06-22 2014-02-12 株式会社山田ドビー プレス機
MX367353B (es) 2013-03-12 2019-08-16 Vamco Int Inc Maquina de prensa.
EP3362273A4 (de) * 2015-10-14 2019-05-15 Nidec Vamco Corporation Vorrichtung und verfahren zur einstellung der hublänge eines beweglichen elements
CN106273607B (zh) * 2016-10-31 2017-12-08 南京工程学院 一种双点多连杆压力机驱动机构

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH541418A (de) * 1971-08-04 1973-09-15 Maschb Ing O Klammer Verfahren und Einrichtung zur Verstellung der Lage des Stösselhubes bei Pressen
CH542711A (de) * 1971-10-01 1973-10-15 Bruderer Ag Einrichtung zur Veränderung des Arbeitshubes einer Stanzmaschine
CH574323A5 (de) * 1974-09-03 1976-04-15 Bruderer Ag
DE2900901A1 (de) * 1979-01-11 1980-07-17 Raster Werkzeugmasch Rwm Exzenterpresse oder -stanze
EP0724953B1 (de) * 1995-01-21 1997-09-17 Bruderer Ag Stanzpresse mit langem Werkzeugeinbauraum
JPH11179598A (ja) * 1997-12-15 1999-07-06 Aida Eng Ltd 小形高速自動プレス

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU192634U1 (ru) * 2019-06-17 2019-09-24 Федеральное государственное бюджетное образовательное учреждение высшего образования "Сибирский государственный индустриальный университет", ФГБОУ ВО "СибГИУ" Кривошипно-ползунный механизм пресса

Also Published As

Publication number Publication date
DE60138600D1 (de) 2009-06-18
JP2002144096A (ja) 2002-05-21
EP1207039A2 (de) 2002-05-22
JP3667227B2 (ja) 2005-07-06
EP1207039A3 (de) 2003-01-15

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