EP0799692B1 - Hubverstelleinrichtung - Google Patents
Hubverstelleinrichtung Download PDFInfo
- Publication number
- EP0799692B1 EP0799692B1 EP97104428A EP97104428A EP0799692B1 EP 0799692 B1 EP0799692 B1 EP 0799692B1 EP 97104428 A EP97104428 A EP 97104428A EP 97104428 A EP97104428 A EP 97104428A EP 0799692 B1 EP0799692 B1 EP 0799692B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- eccentric
- locking
- eccentric bush
- bush
- adjusting device
- 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
Links
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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
- B30B1/263—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
Definitions
- the present invention relates to a stroke adjustment device for eccentric presses or punches, with an eccentric shaft, which is rotatably supported in at least one bearing and has at least one eccentric pin on which an eccentric bushing is rotatably and axially displaceable and with at least one connecting rod that rotates on the eccentric bushing and is axially displaceable relative to this and axially at least indirectly with respect to the eccentric shaft is fixed with a coupling device that is a rotationally fixed connected to the eccentric bushing and to the eccentric bushing axially movable first coupling element and a rotationally fixed second coupling element connected to the eccentric shaft has, and the coupling device by moving the eccentric bush from an engaged position, in which the first and the second coupling element by positive Engagement are rotatably connected to each other in a decoupled point can be transferred in which the first and the second coupling element is disengaged and are rotatable against each other and with a locking device, which consists of a first locking element, the non-rotatably connected to the eccentric bushing
- Such a stroke adjustment device is e.g. from DE-A-4130811 known.
- the eccentric bushing is in operation non-rotatably connected to the eccentric shaft.
- To adjust the Hubes become the eccentric bushing and the eccentric shaft from each other decoupled so that the eccentric bush relative to the eccentric shaft is rotatable. If the eccentric bushing and the eccentric shaft are rotatable against each other, is the eccentric bush set against the connecting rod. By turning the eccentric shaft the lifting height can then be adjusted. After this The eccentric bushing and the Connecting rods separated and the eccentric bushing with the eccentric shaft non-rotatably connected. The eccentric press or punch can then be put back into operation.
- the object of the invention is therefore a stroke adjustment device to further develop the type mentioned at the beginning, that it can be realized with little effort and by is characterized by a more compact design.
- the object is achieved in that the first Coupling element and the first locking element opposite the Eccentric bushing are fixed axially and between the eccentric bushing and eccentric pin provided at least one annular space which is limited by an eccentric pin step on the Outer surface of the eccentric pin and an eccentric bushing step on the inside of the eccentric bushing, with the annular space through axial displacement of the eccentric bush relative to the eccentric shaft its volume can be changed, and a supply line in the annulus opens through which a pressure medium enters the annulus is feedable.
- This solution is simple and has the advantage that an actuator integral to move the eccentric bushing be formed with the eccentric bushing and the eccentric pin can. This allows the number of parts required reduce significantly. In addition, such a stroke adjustment device can be used design extremely compact.
- the Stroke adjustment two axially spaced apart Have annular spaces, whereby when moving the eccentric bushing the volume of an annulus is reduced while the volume of the other annulus increases. Thereby it is possible to move the eccentric bushing in both axial directions by introducing a pressure medium into to enable the respective pressure chamber. This allows again significantly reduce the number of components required.
- annular shoulder is arranged within the annular recess.
- the annular spaces can be in have different depths in the radial direction. Thereby can e.g. different forces in each direction of movement the eccentric bushing.
- the first Coupling element as internal toothing and the second coupling element is designed as an external toothing, wherein in the engaged position with the internal teeth the external toothing is engaged. That way gets a stable connection between the eccentric bushing and the eccentric shaft.
- the eccentric bushing in different rotational positions compared to the eccentric shaft arrange.
- the External teeth can be attached to a ring element, the non-rotatably and axially fixed on the eccentric shaft is. This allows the external gearing to be independent of the Manufacture eccentric shaft. In this way, the manufacturing costs significantly lower.
- first locking element as a projection attached to the eccentric bushing is formed, which in the locking position in the as a recess formed second locking element in a form-fitting manner intervenes. This way you get a simple one and effective locking device.
- Hydraulic fluid is provided.
- Fig. 1 shows an eccentric press 1 in a schematic representation.
- the eccentric press 1 has a frame 2 with a press table 3 and slide guides 4, in which a plunger 5 is vertically movable slidably.
- a plunger 5 is vertically movable slidably.
- additional support elements 6 are provided for guides 7.
- an eccentric shaft 8 is rotatably mounted in the Frame 2, an eccentric shaft 8 is rotatably mounted. The drive the eccentric shaft 8 takes place in the usual way and is not shown in detail.
- the eccentric shaft 8 has an eccentric pin 9 on an eccentric bush 10 rotatably and axially displaceably mounted is. On the eccentric bush 10 is rotatable and axial a connecting rod 11 is slidably mounted. The connecting rod 11 is with the plunger 5 connected via a joint 12.
- the connecting rod 11 becomes axial between the slide guides 7 Direction, with the eccentric press 1 between connecting rod 11 and the guides 7 an air gap of approx. 1 mm is present.
- the eccentric pin has over an outer surface 13.
- the eccentric bushing has an inner surface 14 and an outer surface 15.
- the connecting rod 11 via an inner surface 16, which is also cylindrical in cross section is.
- the eccentric pin has two opposite to each other arranged eccentric pin stages 17 and 18, together a form annular shoulder 19.
- two eccentric bushing stages 20 and 21 are arranged, which together form an annular recess 22.
- annular space 23 and 24 Through the annular shoulder 19 and the annular recess 22 are two axially spaced annular spaces 23 and 24 formed.
- the side boundaries run the annular spaces 23 and 24 are substantially radial, however other shapes are also conceivable. As can be seen in FIG. 2, this is maximum volume of the annular space 23 is less than the maximum Volume of the annular space 24. This is achieved in that the Outer surface 13 of the eccentric pin in the area of the annular space 23 has a larger diameter than in the area of Annulus 24.
- each feed lines 25a-d opens. Through the The pressure medium can feed lines 25a-d to the annular spaces 23 and 24 supplied or removed from them.
- a line 25e is also provided, via which a Print media such as Hydraulic fluid from annulus 24 between eccentric bushing and connecting rod 11 is passed to a Lubrication between connecting rod 11 and eccentric bush 10 too to reach.
- a Print media such as Hydraulic fluid from annulus 24 between eccentric bushing and connecting rod 11 is passed to a Lubrication between connecting rod 11 and eccentric bush 10 too to reach.
- a coupling device 26 between eccentric bushing 10 and eccentric shaft 8 is provided.
- the coupling device 26 consists of a first coupling element 27, which has an internal toothing 28 has and a second coupling element 29 which a External teeth 30 has.
- the first coupling element 27 with the internal toothing 28 is in one piece with the eccentric bushing 10 trained.
- the internal toothing 28 is thus non-rotatable and axially fixed relative to the eccentric bush 10.
- the external toothing 30 is applied to a ring element 31, which fixed in rotation and axially on the eccentric shaft 8 is.
- the coupling device 26 is in a engaged position, in which the internal teeth 28 and the external teeth 30 intermesh. Coupled in this Position is the eccentric bush 10 with respect to the eccentric shaft 8 fixed against rotation. By moving the eccentric bushing 10 relative to the eccentric pin 9, the coupling device 26 transferred to a disengaged position which is shown in Fig. 3. Disengaged in this Position are the internal teeth 28 and External teeth 30 out of engagement. The eccentric bush 10 is thus rotatable relative to the eccentric shaft 8.
- a locking device 32 is provided a first locking element 33 and a second locking element 34 has.
- the first locking element 33 is as a projection 35 formed, which is firmly attached to the eccentric bushing 10 is.
- the second locking element is as a recess 36 formed in connecting rod 11.
- the locking device 32 is from a locking position in which the projection 35 in the Recess 36 engages, as shown in Fig. 3, convertible into a release position in which the projection 35 and the recess 36 are disengaged. In the locking position is the eccentric 10 relative to the Conrod 11 is fixed against rotation. Can in the release position the connecting rod 11 and the eccentric bushing 10 are rotated relative to one another become.
- the locking device is located 32 always in their release position, when the coupling device 26 is engaged in it Position.
- the locking device is also located 32 in its locking position when the coupling device 26 is in its disengaged position.
- the locking device 32 and the coupling device 26 are arranged so that a mechanical overlap between locking device 32 and coupling device 26 is available. This means that before the Coupling device 32 completely in its disengaged position, the locking device 32nd is already partially engaged and vice versa, see above that before the clutch device 32 completely except one Is engaged, the coupling device 26 already partially is engaged again. This will result in unwanted twisting the eccentric bushing when transferring the coupling device 26 or the locking device 32 in the different Positions prevented.
- the eccentric bush 10 form-fitting with the frame 2 connects the eccentric press 1 torsionally.
- the eccentric press 1 is first stopped.
- the pressure chamber 23 is filled with a pressure medium, such as. a hydraulic fluid.
- a pressure medium such as. a hydraulic fluid.
- the eccentric bush 10 moves to the left in Fig. 2 is, whereby the coupling device 26 of its coupled Position is transferred to its disengaged position, as shown in Fig. 3.
- the eccentric bushing 10 becomes the pressure medium from the annular space 24 ousted.
- the locking device 33 transferred from their release position into their locking position, the projection 35 engages in the recess 36 and thereby the connecting rod 11 is fixed relative to the eccentric bush 10.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transmission Devices (AREA)
- Press Drives And Press Lines (AREA)
Description
- Fig. 1
- eine schematische Darstellung einer Exzenterpresse;
- Fig. 2
- das Detail aus Fig. 1 in einer Schnittansicht, wobei sich die Kupplungseinrichtung in der eingekuppelten Stellung befindet;
- Fig. 3
- die Darstellung aus Fig. 2, wobei sich die Kupplungseinrichtung in der ausgekuppelten Stellung befindet.
Claims (10)
- Hubverstelleinrichtung, für Exzenterpressen oder Stanzen, mit einer Exzenterwelle (8), welche in zumindest einem Lager drehbar gelagert ist und zumindest einen Exzenterzapfen (9) aufweist, auf dem eine Exzenterbuchse (10) drehbar und axial verschieblich gelagert ist und zumindest einem Pleuel (11), das drehbar auf der Exzenterbuchse (10) und gegenüber dieser axial verschieblich gelagert ist und zumindest mittelbar gegenüber der Exzenterwelle axial festgelegt ist, mit einer Kupplungseinrichtung (26), die ein drehfest mit der Exzenterbuchse verbundenes und mit der Exzenterbuchse axial bewegliches erstes Kupplungselement (27) und ein drehfest mit der Exzenterwelle verbundenes zweites Kupplungselement (29) aufweist, und die Kupplungseinrichtung durch Verschieben der Exzenterbuchse von einer eingekuppelten Stellung, in welcher das erste und das zweite Kupplungselement durch formschlüssigen Eingriff drehfest miteinander verbunden sind, in eine entkuppelte Stellung überführbar ist, in welcher das erste und das zweite Kupplungselement sich außer Eingriff befinden und gegeneinander verdrehbar sind, sowie mit einer Arretiereinrichtung (32), die aus einem ersten Arretierelement (33) besteht, das drehfest mit der Exzenterbuchse verbunden und zusammen mit der Exzenterbuchse axial verschieblich ist, und einem zweiten Arretierelement (34), das an dem Pleuel (11) angebracht ist, und durch axiales Verschieben der Exzenterbuchse die Arretiereinrichtung von einer Arretierstellung, in welcher die beiden Arretierelemente formschlüssig ineinander greifen, so daß das Pleuel gegenüber der Exzenterbuchse drehfest ist, in eine Freigabestellung überführbar ist, in welcher die beiden Arretierelemente sich außer Eingriff befinden, so daß die Exzenterbuchse gegenüber dem Pleuel verdrehbar ist, wobei sich die Kupplungseinrichtung in der eingekuppelten Stellung befindet, wenn die Arretiereinrichtung sich in der Freigabestellung befindet, und die Kupplungseinrichtung sich in der entkuppelten Stellung befindet, wenn die Arretiervorrichtung sich in der Arretierstellung befindet, dadurch gekennzeichnet, daß das erste Kupplungselement und das erste Arretierelement gegenüber der Exzenterbuchse axial festgelegt sind und zwischen Exzenterbuchse und Exzenterzapfen zumindest ein Ringraum (23,24) vorgesehen ist, der begrenzt wird durch eine Exzenterzapfenstufe (17,18) und eine Exzenterbuchsenstufe (20,21) an der Innenseite der Exzenterbuchse, wobei der Ringraum durch axiales Verschieben der Exzenterbuchse gegenüber der Exzenterwelle in seinem Volumen veränderbar ist und eine Zuleitung (25a-d) in den Ringraum mündet, durch welche ein Druckmedium dem Ringraum zuführbar ist.
- Hubverstelleinrichtung nach Anspruch 1, dadurch gekennzeichnet, daß zwei axial voneinander beabstandete Ringräume (23,24) vorgesehen sind, wobei sich beim Verschieben der Exzenterbuchse das Volumen des einen Ringraumes verkleinert, während sich das Volumen des anderen Ringraumes vergrößert.
- Hubverstelleinrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die beiden Ringräume durch einen ringförmigen Absatz (19) auf der Oberfläche des Exzenterzapfens (9) und eine ringförmige Ausnehmung (22) an der Innenseite der Exzenterbuchse gebildet werden, wobei der ringförmige Absatz innerhalb der ringförmigen Ausnehmung angeordnet ist.
- Hubverstelleinrichtung nach Anspruch 2 oder 3, dadurch gekennzeichnet, daß die Ringräume in radialer Richtung unterschiedliche Tiefen aufweisen.
- Hubverstelleinrichtung nach einem der vorangegangenen Ansprüche, dadurch gekennzeichnet, daß das erste Kupplungselement einstückig mit der Exzenterbuchse ausgebildet ist.
- Hubverstelleinrichtung nach einem der vorangegangenen Ansprüche, dadurch gekennzeichnet, daß das erste Kupplungselement als Innenverzahnung (28) und das zweite Kupplungselement als Außenverzahnung (29) ausgebildet ist, wobei sich in der eingekuppelten Stellung die Innenverzahnung formschlüssig mit der Außenverzahnung in Eingriff befindet.
- Hubverstelleinrichtung nach einem der vorangegangenen Ansprüche, dadurch gekennzeichnet, daß die Außenverzahnung auf einem Ringelement (31) angebracht ist, das drehfest und axial festgelegt auf der Exzenterwelle angebracht ist.
- Hubverstelleinrichtung nach einem der vorangegangenen Ansprüche, dadurch gekennzeichnet, daß das erste Arretierelement als ein an der Exzenterbuchse angebrachter Vorsprung (35) ausgebildet ist, der in der Arretierstellung in das als eine Ausnehmung (36) ausgebildete zweite Arretierelement formschlüssig eingreift.
- Hubverstelleinrichtung nach einem der vorangegangenen Ansprüche, dadurch gekennzeichnet, daß das Pleuel gegenüber einem Rahmen (2) der Exzenterpresse (1) axial festgelegt ist und die Exzenterwelle axial gegenüber dem Rahmen festgelegt ist.
- Hubverstelleinrichtung nach einem der vorangegangenen Ansprüche, dadurch gekennzeichnet, daß als Druckmedium Hydraulikflüssigkeit vorgesehen ist.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19612954A DE19612954C1 (de) | 1996-04-01 | 1996-04-01 | Hubverstelleinrichtung |
DE19612954 | 1996-04-01 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0799692A2 EP0799692A2 (de) | 1997-10-08 |
EP0799692A3 EP0799692A3 (de) | 1997-11-05 |
EP0799692B1 true EP0799692B1 (de) | 2001-11-28 |
Family
ID=7790116
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97104428A Expired - Lifetime EP0799692B1 (de) | 1996-04-01 | 1997-03-14 | Hubverstelleinrichtung |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0799692B1 (de) |
DE (2) | DE19612954C1 (de) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6027127A (en) * | 1997-02-12 | 2000-02-22 | Rollerblade, Inc. | Off-road in-line skate |
CA2396657C (en) | 2001-08-16 | 2007-11-06 | The Minster Machine Company | Adjustable stroke mechanism |
EP1867468A1 (de) * | 2006-06-12 | 2007-12-19 | Haulick + Roos GmbH | Hubverstelleinrichtung sowie Presse, Stanz- oder Umformautomat mit einer Hubverstelleinrichtung |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3732646A1 (de) * | 1987-09-28 | 1989-04-13 | Kaiser Pressen Gmbh & Co Kg | Exzenterpresse mit hubverstellung |
JPH07102479B2 (ja) * | 1990-08-28 | 1995-11-08 | アイダエンジニアリング株式会社 | ストローク長さ2段階切替型プレス |
US5109766B1 (en) * | 1990-10-31 | 1994-03-22 | Minster Machine Co | Adjustable stroke punch press |
DE4412198C1 (de) * | 1994-04-08 | 1995-05-04 | Kaiser Kg Otto | Hubverstelleinrichtung für Exzenterpressen oder Stanzen |
-
1996
- 1996-04-01 DE DE19612954A patent/DE19612954C1/de not_active Expired - Fee Related
-
1997
- 1997-03-14 EP EP97104428A patent/EP0799692B1/de not_active Expired - Lifetime
- 1997-03-14 DE DE59705484T patent/DE59705484D1/de not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
EP0799692A3 (de) | 1997-11-05 |
DE19612954C1 (de) | 1997-11-20 |
DE59705484D1 (de) | 2002-01-10 |
EP0799692A2 (de) | 1997-10-08 |
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