EP0980727B1 - Device connected to a crank for moving a part mounted on a slider relative thereto - Google Patents

Device connected to a crank for moving a part mounted on a slider relative thereto Download PDF

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Publication number
EP0980727B1
EP0980727B1 EP99114317A EP99114317A EP0980727B1 EP 0980727 B1 EP0980727 B1 EP 0980727B1 EP 99114317 A EP99114317 A EP 99114317A EP 99114317 A EP99114317 A EP 99114317A EP 0980727 B1 EP0980727 B1 EP 0980727B1
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EP
European Patent Office
Prior art keywords
slide
gear ring
gear
cam
thrust crank
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.)
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Application number
EP99114317A
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German (de)
French (fr)
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EP0980727A3 (en
EP0980727A2 (en
Inventor
Werner Dipl.-Ing.(FH) Gödtner
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Wafios AG
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Wafios AG
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Priority to DE29923474U priority Critical patent/DE29923474U1/en
Publication of EP0980727A2 publication Critical patent/EP0980727A2/en
Publication of EP0980727A3 publication Critical patent/EP0980727A3/en
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Publication of EP0980727B1 publication Critical patent/EP0980727B1/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21JFORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J13/00Details of machines for forging, pressing, or hammering
    • B21J13/08Accessories for handling work or tools
    • B21J13/14Ejecting devices

Definitions

  • the invention relates to a device on a slide crank, for generating a movement of a part mounted on the slide relative to this, according to the generic term of claim 1.
  • the device known from DE 195 21 041 A1 closest prior art is intended to reduce this mechanical outlay.
  • This device is used to control auxiliary devices such as stamp ejector pins and wipers or stamp holders in an oscillating press ram of single and multi-stage presses.
  • a cam disk which is firmly seated on the crank pin of a crankshaft of a forming press controls a pressure tappet sliding inside the connecting rod, its movement is introduced into the forming tool via a spring plunger, as a result of which the production part passes through the spring plunger end is ejected from the forming tool.
  • the cam describes here also one revolution with a crankshaft revolution with respect to the pressure tappet.
  • the point of contact between the pressure tappet and the spring tappet lies in the pivot point of the bearing bolt that connects the connecting rod to the press ram.
  • the invention is based on the object, the above. Eliminate disadvantages, and a spinning To get motion.
  • the device according to the invention can be used universally and large transmission forces can direct flow of force into the work movement required. Because besides the tool movement no other sliding movements, only rotational movements when initiating the movement occur, the device according to the invention operates with extremely little wear.
  • All movements can be generated, which result from a rotary movement via corresponding Gear can be derived.
  • crank disc (12) This means that a rotary movement of the crank disc (12) is not only one of the crank radius, but also from the gear ratio (e.g. 2: 1) of the stationary gear (18) to the rotatable gear (25) dependent pivoting movement of the crank arm (15) relative to the rotated crank disc (12) results.
  • this known transmission does not extend over the crank arm (15) on the articulated carriage (4) so that a movement is generated on the carriage (Slide) mounted part (e.g. straight guide 28) relative to the slide not provided at all is.
  • she serves as a drive for a stamp-side ejector plunger 62, which in a crank mechanism or multi-stage press is integrated.
  • a press slide 12 is guided so that it can be pushed back and forth, the task of which is by means of slide-side forming tools and stationary dies from workpiece blanks, if necessary, gradually finished workpieces, e.g. Screws, bolts and the like to manufacture.
  • crankshaft 14 To drive the press slide 12, a crankshaft 14 is provided, which in a not shown Main crankshaft bearing is mounted. This drives two via an eccentric crank pin 20 Push rods 26, 28 which engage a pin 18 mounted in the slide 12. On the Crank pin 20 of the crankshaft 14 rotatably arranged in a drive gear 22, which is in the In contrast to the push rods 26, 28 rotates all round.
  • crank rod 26 connects above the drive gear 22.
  • the other crank rod 28 is arranged below the gear wheel 22 following a spacer bush 30.
  • the Drive gear 22 meshes with an intermediate gear 34, which rotates freely on a pin 36 is mounted, which is fixed in the crank rods 26, 28.
  • the intermediate gear 34 is with a Output gear 38 is engaged at the end of the crank rods remote from the crank pin 20 26, 28 is mounted on a pin 18.
  • a cam 44 is connected in a rotationally fixed manner to the gear wheel 38, which is freely rotatable on the pin 18.
  • the cam 44 rotating in the press slide 12 acts to decrease a lifting movement on a cam roller 46, which is rotatably mounted on a pin 48, which is at the lower end a roller lever 50 is attached.
  • the other end of the roller lever 50 is on a bolt 54 pivoted, which is fixed in a roller lever bearing 56 on the press slide 12.
  • the lower The end of the roller lever 50 abuts the ejector tappet 62 with its side surface 58.
  • the ejector ram 62 is driven oscillatingly by the roller lever 50.
  • the ejector plunger 62 is in one rear bearing bushing 64 and a front bearing bushing 66, this bearing bushing 66 forms the counter bearing for a coil spring 68.
  • the force of the spring 68 becomes the ejector tappet 62 and the cam roller 46 pressed against the control cam 44.
  • Fig. 3 shows as a second modified embodiment of the drive device according to the invention of the ejector plunger 62 of a forming press arranged on the stamp.
  • the output gear 38 meshes with a take-off gear 72, which is above the gear 38 is rotatably mounted on a pin 74, which in turn is in a bearing 76 on the press slide 12 is attached.
  • cam 44 here replaced by a cam 44 ', which is now firmly connected to the take-off gear 72.
  • the cam disc 44 ' acts on a cam roller 82 which is rotatably mounted on a pin 84, which is attached to an arm 88 of a two-armed roller lever 90.
  • the lever 90 itself is on Press slide 12 pivotally mounted on a pin 92.
  • the free end of the lever 90 acts Execution of the ejection movement on an ejector plunger 62 ', the execution and function corresponds to that of the first embodiment.
  • the gear transmission 22, 34, 38 became the first and second replaced by a toothed belt gear 96.
  • a drive toothed disk 98 arranged in a rotationally fixed manner.
  • An output toothed disk 100 can be rotated on the pin 18 in alignment with this toothed disk 98 stored.
  • a toothed belt 102 connects both toothed pulleys 98 and 100.
  • the output gear 106 has approximately the same outer diameter here as the driven toothed disk 100. Both thus coincide in Figure 4 in their outline.
  • the output gear 106 meshes with that on the press slide 12 mounted gear 72, the arrangement and function, as well as the other parts of the device 44 ', 82 to 92 and 62' to 68 correspond to the device shown in FIG. 3.
  • toothed pulleys 98 and 100 and the toothed belt 102 could of course also a sprocket set and a chain can be used as a chain gear.
  • the removal gear 72 is with a drive bevel gear 110 firmly connected, which drives an output bevel gear 112.
  • the driven bevel gear 112 is on one Shaft 114 rotatably supported, which in a bearing block 116 seated on the press slide 12 is rotatably mounted.
  • FIG. 6 shows the fifth embodiment of the invention. It is used when clamping wire or band material 122 on a carriage 124 which e.g. as a feed carriage in a wire or tape-processed machine is used.
  • This stroke adjustment is achieved in a known manner in that a drive crank 128 has a T-slot 130, which is in a T-slot guide 132 from the center of the drive crank 128 away or vice versa via an adjusting screw 136 after loosening a fastening nut 138 is adjusted.
  • the T-slot nut 130 is bolt-shaped, with on its Round part 134, which represents the crank pin, corresponding to FIG. 4, a drive toothed disk 142 is arranged rotatably.
  • a push rod 144 mounted, the other end of which is articulated with the carriage 124 via a bolt 146 connected is.
  • An output toothed disk 148 is rotatably arranged on the bolt 146.
  • a timing belt 150 connects both toothed disks 142 and 148.
  • With the driven toothed disk 148 is one Cam 152 rotatably connected, the one rotatably arranged on a roller lever 156 Cam roller 158 actuated.
  • the roller lever 156 is pivotable in the carriage 124 on a bolt 160 stored.
  • a holding jaw 162 With the roller lever 156, a holding jaw 162 is connected, the one to be retracted Wire or tape 122 during the retraction movement of the carriage 124 against a counter-holding jaw 164 is clamped so that a wire feed occurs.
  • the clamping force required for this becomes via a spring holder 166 attached to the slide 124, from a compression spring 168 via the roller lever 156 exerted on the wire 122.
  • the course of the cam 152 is selected so that during the carriage return, the wire 122 is released from the movable holding jaw 162.
  • step-up and / or step-down ratio can be installed in all of the embodiments shown become.

Description

Die Erfindung betrifft eine Einrichtung an einer Schubkurbel, zum Erzeugen einer Bewegung eines am Schieber gelagerten Teiles relativ zu diesem, gemäß dem gattungsbestimmenden Oberbegriff des Anspruchs 1.The invention relates to a device on a slide crank, for generating a movement of a part mounted on the slide relative to this, according to the generic term of claim 1.

Es ist seit langem bekannt, für den Antrieb eines stempelseitigen Auswerferstößels einer Umformpresse eine zum Preßschlittenrücklauf gegenläufige Bewegung von außen in den Schlitten einzuleiten, um das Werkstück aus Preßwerkzeugen, z.B. Sechskantkopfstempeln mittels eines Auswerferstößels auszuwerfen. Diese Konstruktionen weisen durch die vielen Bauelemente zwischen Krafteinleitung und Auswerfer eine hohe Nachgiebigkeit auf. Zudem haben diese meist noch hin- une hergehende Bewegungen.It has long been known for the drive of a stamp-side ejector ram of a forming press initiate a movement in the opposite direction to the press slide return from the outside into the slide, around the workpiece from pressing tools, e.g. Hexagon head stamping using an ejector plunger eject. These constructions point through the many components Force transmission and ejector have a high degree of flexibility. In addition, these usually unintended movements.

Die aus der DE 195 21 041 A1 nächstliegender Stand der Technik bekannte Vorrichtung soll diesen mechanischen Aufwand verringern. Diese Vorrichtung dient zur Steuerung von Hilfseinrichtungen, wie Stempelauswerferstifte, Abstreifer oder Stempelaufnahmen in einem oszillierenden Pressenstößel von Ein- und Mehrstufenpressen. Hierzu steuert eine fest auf dem Kurbelzapfen einer Kurbelwelle einer Umformpresse sitzende Kurvenscheibe einen innerhalb der Pleuelstange gleitend geführten Druckstößel, dessen Bewegung über einen Federstößel in das Umformwerkzeug eingeleitet wird, wodurch das Fertigungsteil durch das Federstößelende aus dem Umformwerkzeug ausgeworfen wird. Die Kurvenscheibe beschreibt hierbei bei einer Kurbelwellenumdrehung gegenüber dem Druckstößel ebenfalls eine Umdrehung. Der Berührungspunkt zwischen dem Druckstößel und dem Federstößel liegt dabei im Drehpunkt des Lagerbolzens, der das Pleuel mit dem Pressenstößel verbindet.The device known from DE 195 21 041 A1 closest prior art is intended to reduce this mechanical outlay. This device is used to control auxiliary devices such as stamp ejector pins and wipers or stamp holders in an oscillating press ram of single and multi-stage presses. For this purpose, a cam disk which is firmly seated on the crank pin of a crankshaft of a forming press controls a pressure tappet sliding inside the connecting rod, its movement is introduced into the forming tool via a spring plunger, as a result of which the production part passes through the spring plunger end is ejected from the forming tool. The cam describes here also one revolution with a crankshaft revolution with respect to the pressure tappet. The point of contact between the pressure tappet and the spring tappet lies in the pivot point of the bearing bolt that connects the connecting rod to the press ram.

Bei dieser DE 195 21 041 A1 wird in den Schlitten eine oszillierende Bewegung eingeleitet.In this DE 195 21 041 A1 an oscillating movement is initiated in the carriage.

Der Erfindung liegt nun die Aufgabe zugrunde, die o.g. Nachteile auszuschalten, und eine drehende Bewegung zu erhalten.The invention is based on the object, the above. Eliminate disadvantages, and a spinning To get motion.

Diese Aufgabe wird ausgehend von einer Vorrichtung der eingangs genannten Art erfindungsgemäß durch die kennzeichnenden Merkmale des Anspruchs 1 gelöst.This task is based on a device of the type mentioned in the invention solved by the characterizing features of claim 1.

Dadurch, daß die Drehbewegung aus der Kurbelwelle an der Schubstange des Kurbeltriebs entlang in den Preßschlitten eingeleitet wird und von dort aus direkt die Arbeitsbewegung abgeleitet wird, ist die erfindungsgemäße Einrichtung universell einsetzbar und es können große Übertragungskräfte in direktem Kraftfluß in die jeweils benötigte Arbeitsbewegung eingeleitet werden. Da außer der Werkzeugbewegung keine sonstigen Gleitbewegungen, sondern nur Rotationsbewegungen bei der Bewegungseinleitung auftreten, arbeitet die erfindungsgemäße Einrichtung äußerst verschleißarm. Characterized in that the rotational movement from the crankshaft along the push rod of the crank mechanism is introduced into the press slide and from there the working movement is derived directly the device according to the invention can be used universally and large transmission forces can direct flow of force into the work movement required. Because besides the tool movement no other sliding movements, only rotational movements when initiating the movement occur, the device according to the invention operates with extremely little wear.

Es können alle Bewegungen erzeugt werden, welche aus einer Drehbewegung über entsprechende Getriebe hergeleitet werden können.All movements can be generated, which result from a rotary movement via corresponding Gear can be derived.

Es ist zwar aus der DE 34 12 147 A1 eine zentriche Schubkurbel bekannt, mit einer Transmission auch aus umlaufenden Teilen (Zwischenrad 24, Zahnrad 25), von denen ein Zahnrad (25) aber auf einem Kurbelzapfen (16) festsitzt, der drehbar in einer Kurbelscheibe (12) mit zentrischer Antriebswelle (13) gelagert ist; zu dieser Transmission gehören jedoch ein bzgl. der Wellenachse koaxiales, stehendes Zahnrad (18) und ein drehbar an der Kurbelscheibe (12) gelagertes Zahnrad (23) zwischen dem stehenden Zahnrad (18) und dem drehbaren Zahnrad (25), mit denen es kämmt.It is known from DE 34 12 147 A1 a central push crank with a transmission also from rotating parts (intermediate gear 24, gear 25), of which a gear (25) but on a crank pin (16) which is rotatable in a crank disk (12) with a central drive shaft (13) is stored; However, this transmission includes a coaxial with respect to the shaft axis, stationary gear (18) and a gear (23) rotatably mounted on the crank disk (12) the stationary gear (18) and the rotatable gear (25) with which it meshes.

D.h., dass eine Drehbewegung der Kurbelscheibe (12) nicht nur eine vom Kurbelradius, sondern auch vom Übersetzungsverhältnis (z.B. 2:1) des stehenden Zahnrades (18) zum drehbaren Zahnrad (25) abhängige Schwenkbewegung des Kurbelarms (15) relativ zur gedrehten Kurbelscheibe (12) zur Folge hat. Insbesondere erstreckt sich diese bekannte Transmission nicht über den Kurbelarm (15) auf den angelenkten Schlitten (4), sodass das Erzeugen einer Bewegung eines am Schlitten (Schieber) gelagerten Teiles (z.B. Geradführung 28) relativ zum Schlitten überhaupt nicht vorgesehen ist.This means that a rotary movement of the crank disc (12) is not only one of the crank radius, but also from the gear ratio (e.g. 2: 1) of the stationary gear (18) to the rotatable gear (25) dependent pivoting movement of the crank arm (15) relative to the rotated crank disc (12) results. In particular, this known transmission does not extend over the crank arm (15) on the articulated carriage (4) so that a movement is generated on the carriage (Slide) mounted part (e.g. straight guide 28) relative to the slide not provided at all is.

Das trifft auch auf das DE-GM 1 864 599 (Fig. 3 und 4) zu, wo zur Erzeugung zweier sich überlagernder Bewegungen der Schubstange (Pleuel 9) diese kurbelseitig mittels eines zusätzlichen Exzenters (8) an einem Zahnrad (6), das mit einem zentrisch feststehenden Zahnrad (7) kämmt, am hauptsächlichen Exzenter (Kurbelzapfen 5) gelagert ist.This also applies to DE-GM 1 864 599 (Fig. 3 and 4), where to create two overlapping Movements of the push rod (connecting rod 9) on the crank side by means of an additional eccentric (8) on a gear (6) which meshes with a centrally fixed gear (7) on main eccentric (crank pin 5) is mounted.

In der unter EPÜ-Art. 54 (3) fallenden WO 99/11906 ist eine Kopplungseinrichtung für eine Hubkolbenmaschine vorgeschlagen, und zwar im Gegensatz zur erfindungsgemäßen Schubkurbel (Gelenkdreieck) eine Kurbelschwinge (Gelenkviereck) aus einer Kurbel (4, 5), einer exzentrisch gelagerten Kreisscheibe (9) als Schwinge und einer pleuelartigen Koppel (7, 8), wobei die Schwinge außer an der Koppel auch an dem Hubkolben (1) angelenkt ist. Eine Transmission aus Zahnrädern (10, 11, 13, 15) an der Koppel, von denen eines (10) auf dem Kurbelzapfen (4) sitzt und eines drehfest mit der Kreisscheibe (9) verbunden ist, sorgt dafür, dass der gewöhnliche Kolbenhub vom oberen zum unteren Totpunkt (Expansion) verzögert beginnt.In the under EPC Art. 54 (3) falling WO 99/11906 is one Coupling device proposed for a reciprocating piston machine, in contrast to the push crank according to the invention (Articulated triangle) a crank arm (articulated quadrilateral) from one Crank (4, 5), an eccentrically mounted circular disc (9) as a rocker and a connecting rod-like coupling (7, 8), the In addition to the coupling, the rocker is also articulated on the reciprocating piston (1) is. A transmission of gears (10, 11, 13, 15) on the coupling, one of which (10) on the crank pin (4) sits and one non-rotatably connected to the circular disc (9) ensures that the usual piston stroke from the top delayed to bottom dead center (expansion) begins.

Im folgenden wird die Erfindung anhand der durch die Zeichnung schematisch dargestellten fünf Ausführungsformen im einzelnen erläutert. Es zeigen:

Fig. 1
eine erste Ausführungsform in Vorderansicht zur Steuerung des Auswerferstößels einer Umformpresse
Fig.2
eine Draufsicht auf die Ausführungsform von Fig. 1 in teilweise abgebrochener Darstellung
Fig. 3
eine zweite Ausführungsform in Vorderansicht zur Steuerung des Auswerferstößels
Fig. 4
eine dritte Ausführungsform in Vorderansicht zur Steuerung des Auswerferstößels
Fig. 5 x
eine vierte Ausführungsform in Vorderansicht zur Steuerung einer weiteren, nur angedeuteten Arbeitsbewegung
Fig. 6
eine fünfte Ausführungsform in Vorderansicht zur Steuerung einer Drahtklemmeinrichtung z.B. bei einem Einzugsschlitten einer dratverarbeitenden Maschine
The invention is explained in detail below with reference to the five embodiments shown schematically by the drawing. Show it:
Fig. 1
a first embodiment in front view for controlling the ejector ram of a forming press
Fig. 2
a plan view of the embodiment of FIG. 1 in a partially broken representation
Fig. 3
a second embodiment in front view for controlling the ejector plunger
Fig. 4
a third embodiment in front view for controlling the ejector plunger
Fig. 5 x
a fourth embodiment in front view for controlling a further, only indicated working movement
Fig. 6
a fifth embodiment in front view for controlling a wire clamping device, for example in a feed slide of a third-party processing machine

In den Fig. 1 und 2 ist die erste Ausführungsform der erfindungsgemäßen Einrichtung gezeigt. Sie dient als Antrieb für einen stempelseitigen Auswerferstößel 62, der in einem Kurbeltrieb einer Ein- oder Mehrstufenpresse integriert ist. Hierzu ist ein Preßschlitten 12 hin- und herverschiebbar geführt, dessen Aufgabe es ist, mittels schlittenseitigen Umformwerkzeugen und stationären Matrizen aus Werkstückrohlingen ggf. nach und nach fertige Werkstücke, z.B. Schrauben, Bolzen und dergleichen herzustellen.1 and 2, the first embodiment of the device according to the invention is shown. she serves as a drive for a stamp-side ejector plunger 62, which in a crank mechanism or multi-stage press is integrated. For this purpose, a press slide 12 is guided so that it can be pushed back and forth, the task of which is by means of slide-side forming tools and stationary dies from workpiece blanks, if necessary, gradually finished workpieces, e.g. Screws, bolts and the like to manufacture.

Zum Antrieb des Preßschlittens 12 ist eine Kurbelwelle 14 vorgesehen, die in einem nicht gezeigten Kurbelwellenhauptlager gelagert ist. Diese treibt über einen exzentrischen Kurbelzapfen 20 zwei Schubstangen 26, 28 an, die an einem, im Schlitten 12 gelagerten Bolzen 18 angreifen. Auf dem Kurbelzapfen 20 der Kurbelwelle 14 in ein Antriebszahnrad 22 drehfest angeordnet, welches sich im Gegensatz zu den Schubstangen 26, 28 umlaufend dreht.To drive the press slide 12, a crankshaft 14 is provided, which in a not shown Main crankshaft bearing is mounted. This drives two via an eccentric crank pin 20 Push rods 26, 28 which engage a pin 18 mounted in the slide 12. On the Crank pin 20 of the crankshaft 14 rotatably arranged in a drive gear 22, which is in the In contrast to the push rods 26, 28 rotates all round.

In Fig. 2 schließt sich oberhalb des Antriebszahnrads 22 die Kurbelstange 26 an. Die andere Kurbelstange 28 ist unterhalb des Zahnrads 22 im Anschluß an eine Distanzbuchse 30 angeordnet. Das Antriebszahnrad 22 kämmt mit einem Zwischenzahnrad 34, das auf einem Bolzen 36 frei drehbar gelagert ist, der in den Kurbelstangen 26, 28 befestigt ist. Das Zwischenzahnrad 34 ist mit einem Abtriebszahnrad 38 im Eingriff, das an dem,vom Kurbelzapfen 20 entfernten Ende der Kurbelstangen 26, 28 auf einem Bolzen 18 gelagert ist. In Fig. 2, the crank rod 26 connects above the drive gear 22. The other crank rod 28 is arranged below the gear wheel 22 following a spacer bush 30. The Drive gear 22 meshes with an intermediate gear 34, which rotates freely on a pin 36 is mounted, which is fixed in the crank rods 26, 28. The intermediate gear 34 is with a Output gear 38 is engaged at the end of the crank rods remote from the crank pin 20 26, 28 is mounted on a pin 18.

Mit dem auf dem Bolzen 18 frei drehbaren Zahnrad 38 ist eine Kurvenscheibe 44 drehfest verbunden. Die sich im Preßschlitten 12 drehende Kurvenscheibe 44 wirkt zur Abnahme einer Hubbewegung auf eine Kurvenrolle 46, die auf einem Bolzen 48 drehbar gelagert ist, der am unteren Ende eines Rollenhebels 50 befestigt ist. Das andere Ende des Rollenhebels 50 ist auf einem Bolzen 54 schwenkbar gelagert, der in einem Rollenhebellager 56 am Preßschlitten 12 befestigt ist. Das untere Ende des Rollenhebels 50 liegt mit seiner Seitenfläche 58 an dem Auswerferstößel 62 an. Der Auswerferstößel 62 wird vom Rollenhebel 50 oszillierend angetrieben. Der Auswerferstößel 62 ist in einer hinteren Lagerbuchse 64 und einer vorderen Lagerbuchse 66 gelagert, wobei diese Lagerbuchse 66 das Gegenlager für eine Schraubenfeder 68 bildet. Durch die Kraft der Feder 68 werden der Auswerferstößel 62 und die Kurvenrolle 46 an die Steuerkurve 44 gedrückt.A cam 44 is connected in a rotationally fixed manner to the gear wheel 38, which is freely rotatable on the pin 18. The cam 44 rotating in the press slide 12 acts to decrease a lifting movement on a cam roller 46, which is rotatably mounted on a pin 48, which is at the lower end a roller lever 50 is attached. The other end of the roller lever 50 is on a bolt 54 pivoted, which is fixed in a roller lever bearing 56 on the press slide 12. The lower The end of the roller lever 50 abuts the ejector tappet 62 with its side surface 58. The ejector ram 62 is driven oscillatingly by the roller lever 50. The ejector plunger 62 is in one rear bearing bushing 64 and a front bearing bushing 66, this bearing bushing 66 forms the counter bearing for a coil spring 68. The force of the spring 68 becomes the ejector tappet 62 and the cam roller 46 pressed against the control cam 44.

Fig. 3 zeigt als zweite abgewandelte Ausführungsform der erfindungsgemäßen Vorrichtung zum Antrieb des stempelseitig angeordneten Auswerferstößels 62 einer Umformpresse. Hierbei kämmt das Abtriebszahnrad 38 mit einem Abnahmezahnrad 72, das oberhalb des Zahnrades 38 auf einem Bolzen 74 drehbar gelagert ist, der wiederum in einem Lager 76 auf dem Preßschlitten 12 befestigt ist. Die in Fig. 1 und 2 am Abtriebszahnrad 38 befestigte Kurvenscheibe 44 ist hier durch eine Kurvenscheibe 44' ersetzt, die jetzt mit dem Abnahmezahnrad 72 fest verbunden ist. Die Kurvenscheibe 44' wirkt auf eine Kurvenrolle 82, die auf einem Bolzen 84 drehbar gelagert ist, der an einem Arm 88 eines zweiarmigen Rollenhebels 90 befestigt ist. Der Hebel 90 selbst ist am Preßschlitten 12 auf einen Bolzen 92 schwenkbar gelagert. Das freie Ende des Hebels 90 wirkt zum Ausführen der Auswerfbewegung auf einen Auswerferstößel 62', der in Ausführung und Funktion dem der ersten Ausführungsform entspricht.Fig. 3 shows as a second modified embodiment of the drive device according to the invention of the ejector plunger 62 of a forming press arranged on the stamp. Here, the output gear 38 meshes with a take-off gear 72, which is above the gear 38 is rotatably mounted on a pin 74, which in turn is in a bearing 76 on the press slide 12 is attached. 1 and 2 attached to the driven gear 38 is cam 44 here replaced by a cam 44 ', which is now firmly connected to the take-off gear 72. The cam disc 44 'acts on a cam roller 82 which is rotatably mounted on a pin 84, which is attached to an arm 88 of a two-armed roller lever 90. The lever 90 itself is on Press slide 12 pivotally mounted on a pin 92. The free end of the lever 90 acts Execution of the ejection movement on an ejector plunger 62 ', the execution and function corresponds to that of the first embodiment.

Bei der in Fig. 4 gezeigten dritten Ausführungsform wurde das Zahnradgetriebe 22, 34, 38 der ersten und zweiten durch ein Zahnriemengetriebe 96 ersetzt. Hierbei ist auf dem Kurbelzapfen 20 der Kurbelwelle 14 anstelle des Antriebszahnrades 22 eine Antriebszahnscheibe 98 drehfest angeordnet. Fluchtend zu dieser Zahnscheibe 98 ist auf dem Bolzen 18 eine Abtriebszahnscheibe 100 drehbar gelagert. Ein Zahnriemen 102 verbindet beide Zahnscheiben 98 und 100.In the third embodiment shown in FIG. 4, the gear transmission 22, 34, 38 became the first and second replaced by a toothed belt gear 96. Here is on the crank pin 20 Crankshaft 14 instead of the drive gear 22, a drive toothed disk 98 arranged in a rotationally fixed manner. An output toothed disk 100 can be rotated on the pin 18 in alignment with this toothed disk 98 stored. A toothed belt 102 connects both toothed pulleys 98 and 100.

An die Abtriebszahnscheibe 100 anschließend, ist auf dem Bolzen 18 ferner ein Abtriebszahnrad 106 drehbar gelagert angeordnet, das mit der Abtriebszahnscheibe 100 drehfest verbundenen ist, so daß das Zahnrad 106 die Drehbewegung der Zahnscheibe 100 mitmacht. Das Abtriebszahnrad 106 weist hier ungefähr denselben Außendurchmessr auf wie die Abtriebszahnscheibe 100. Beide fallen somit in Fig.4 in ihrem Umriß zusammen. Das Abtriebszahnrad 106 kämmt mit dem am Preßschlitten 12 gelagerten Zahnrad 72, das in Anordnung und Funktion, ebenso wie die weiteren Einrichtungsteile 44', 82 bis 92 und 62' bis 68 der in Fig. 3 gezeigten Einrichtung entsprechen. Following the driven toothed wheel 100, there is also an driven toothed wheel on the bolt 18 106 rotatably mounted, which is rotatably connected to the driven toothed disk 100, so that the gear 106 follows the rotational movement of the toothed disk 100. The output gear 106 has approximately the same outer diameter here as the driven toothed disk 100. Both thus coincide in Figure 4 in their outline. The output gear 106 meshes with that on the press slide 12 mounted gear 72, the arrangement and function, as well as the other parts of the device 44 ', 82 to 92 and 62' to 68 correspond to the device shown in FIG. 3.

Anstelle der Zahnscheiben 98 und 100 und des Zahnriemens 102, könnten selbstverständlich auch ein Kettenrad-Satz und eine Kette als Kettengetriebe Verwendung finden.Instead of the toothed pulleys 98 and 100 and the toothed belt 102, could of course also a sprocket set and a chain can be used as a chain gear.

Bei der vierten Ausführungsform gemäß Fig. 5 ist das Abnahmezahnrad 72 mit einem Antriebskegelrad 110 fest verbunden, das ein Abtriebskegelrad 112 antreibt. Das Abtriebskegelrad 112 ist auf einer Welle 114 drehfest gelagert, welche in einem auf dem Preßschlitten 12 sitzenden Lagerbock 116 drehbar gelagert ist.In the fourth embodiment according to FIG. 5, the removal gear 72 is with a drive bevel gear 110 firmly connected, which drives an output bevel gear 112. The driven bevel gear 112 is on one Shaft 114 rotatably supported, which in a bearing block 116 seated on the press slide 12 is rotatably mounted.

In Fig. 6 ist die fünfte Ausführungsform der Erfindung gezeigt. Sie dient beim Klemmen von Draht oder Bandmaterial 122 bei einem Schlitten 124, welcher z.B. als Einzugsschlitten bei einer draht- oder bandverarbeiteten Maschine Einsatz findet. Hierfür ist erforderlich, daß der Einzugshub verstellbar ist. Diese Hubverstellung wird in bekannter Weise dadurch erreicht, daß eine Antriebskurbel 128 einen T-Nutenstein 130 besitzt, der in einer T-Nutenstein-Führung 132 vom Mittelpunkt der Antriebskurbel 128 weg oder umgekehrt über eine Stellschraube 136 nach dem Lösen einer Befestigungsmutter 138 verstellt wird. Der T-Nutenstein 130 ist bolzenförmig ausgebildet, wobei auf seinem Rundteil 134, das den Kurbelzapfen darstellt, entsprechend Fig. 4 eine Antriebszahnscheibe 142 drehfest angeordnet ist. Auf dem Rundteil des T-Nutensteins 130 ist ferner eine Schubstange 144 gelagert, die mit ihrem anderen Ende über einen Bolzen 146 mit dem Schlitten 124 gelenkig verbunden ist. Auf dem Bolzen 146 ist eine Abtriebszahnscheibe 148 drehbar angeordnet. Ein Zahnriemen 150 verbindet beide Zahnscheiben 142 und 148. Mit der Abtriebszahnscheibe 148 ist eine Kurvenscheibe 152 drehfest verbunden, die eine, an einem Rollenhebel 156 drehbar angeordnete Kurvenrolle 158 betätigt. Der Rollenhebel 156 ist im Schlitten 124 auf einem Bolzen 160 schwenkbar gelagert. Mit dem Rollenhebel 156 ist eine Haltebacke 162 verbunden, die einen einzuziehenden Draht bzw. Band 122 während der Einzugsbewegung des Schlittens 124 gegen eine Gegenhaltebacke 164 klemmt, so daß ein Drahteinzug zustande kommt Die dazu benötigte Klemmkraft wird über einen am Schlitten 124 befestigten Federhalter 166 von einer Druckfeder 168 über den Rollenhebel 156 auf den Draht 122 ausgeübt. Der Verlauf der Kurvenscheibe 152 ist so gewählt, daß während des Schlittenrücklaufs der Draht 122 von der beweglichen Haltebacke 162 freigegeben wird.6 shows the fifth embodiment of the invention. It is used when clamping wire or band material 122 on a carriage 124 which e.g. as a feed carriage in a wire or tape-processed machine is used. This requires that the feed stroke is adjustable is. This stroke adjustment is achieved in a known manner in that a drive crank 128 has a T-slot 130, which is in a T-slot guide 132 from the center of the drive crank 128 away or vice versa via an adjusting screw 136 after loosening a fastening nut 138 is adjusted. The T-slot nut 130 is bolt-shaped, with on its Round part 134, which represents the crank pin, corresponding to FIG. 4, a drive toothed disk 142 is arranged rotatably. On the round part of the T-nut 130 is a push rod 144 mounted, the other end of which is articulated with the carriage 124 via a bolt 146 connected is. An output toothed disk 148 is rotatably arranged on the bolt 146. A timing belt 150 connects both toothed disks 142 and 148. With the driven toothed disk 148 is one Cam 152 rotatably connected, the one rotatably arranged on a roller lever 156 Cam roller 158 actuated. The roller lever 156 is pivotable in the carriage 124 on a bolt 160 stored. With the roller lever 156, a holding jaw 162 is connected, the one to be retracted Wire or tape 122 during the retraction movement of the carriage 124 against a counter-holding jaw 164 is clamped so that a wire feed occurs. The clamping force required for this becomes via a spring holder 166 attached to the slide 124, from a compression spring 168 via the roller lever 156 exerted on the wire 122. The course of the cam 152 is selected so that during the carriage return, the wire 122 is released from the movable holding jaw 162.

Bei allen aufgezeigten Ausführungsformen können beliebige Über- und/oder Untersetzungen eingebaut werden.Any step-up and / or step-down ratio can be installed in all of the embodiments shown become.

Claims (10)

  1. Thrust crank with a device for producing a movement of a part (38; 100; 148), which is mounted at the slide (12; 124), relative to the slide, which movement is derived from the crankpin rotation about the crankshaft axis and transmitted along the pushrod (26, 28; 144) to the constrainedly movable part, from which a working motion is derived, characterised in that for generation of a rotational movement of that part (38; 100; 48) at the slide (12; 124) about a single rotational axis, which is arranged at this and at the pushrod (26, 28; 144), a transmission consisting of rotating parts (22, 34, 38; 98, 100, 102; 150, 142, 148) is provided at the pushrod (26, 28; 144).
  2. Thrust crank according to claim 1, characterised in that the transmission comprises a drive gear ring (22; 142) fixedly seated on the crankpin (20; 134) and a driven gear ring (38; 148), which is mounted on a swivel pin (18; 146) connecting the pushrod (26, 28; 144) and slide (12; 124), as constrainedly movable part as well as at least one rotating part (34; 102; 150) connecting the two gear rings.
  3. Thrust crank according to claim 2, characterised in that a gear ring (34), which meshes with the two other gear rings (22 and 38) and which is rotatably mounted on the pushrod (26, 28) between the two gear rings (22 and 38), is provided as connecting transmission part.
  4. Thrust crank according to claim 2, characterised in that a cogged belt (102; 150) or chain, which is deflected by the two gear rings (22, 38; 142, 148), is provided as connecting transmission part.
  5. Thrust crank according to one of claims 2 to 4, characterised in that the swivel pin (18; 146) carries the cam disc (44; 152) of a cam gear which is arranged at the slide (12; 124) and is connected with the coaxially driven gear ring (38; 148) to be secure against relative rotation.
  6. Use of a thrust crank according to claim 5 for simultaneous reciprocating movements of a ram (62) relative to the moved slide (12), wherein the cam disc (44) controls in friction-coupled manner the constrained motion of a cam roller (46) at a roller lever (50), which is pivotably mounted at the slide (12), and acts on the ram (62) against the restoring force of a spring (68) (Fig. 1).
  7. Use of a thrust crank according to one of claims 2 to 4 for the rotation of a gear ring (72) relative to the moved slide (12), wherein this gear ring (72), which takes off the rotational movement of the driven gear ring (38), meshes with the driven gear ring or with a coaxial gear ring (106), which is connected with the driven gear ring to be secure against relative rotation (Figs. 3 and 5 or 4).
  8. Use according to claim 7, in which for simultaneous reciprocating movements of a ram (62') relative to the moved slide (12) this carries the cam disc (44') of a cam gear, which is arranged at the slide (12) and which is connected with the coaxial take-off gear ring (72) to be secure against relative rotation, wherein the cam disc (44') controls in friction-coupled manner the constrained motion of a cam roller (82) at a roller lever (90), which is rotatably mounted at the slide (12) and acts on the ram (62') against the restoring force of a spring (68) (Figs. 3 and 4).
  9. Use according to claim 7, in which for simultaneous rotation of a working shaft (114) with an axis parallel to the direction of movement of the slide (12) relative to the moved slide the reducing gear ring (72) and the working shaft (114) are coupled by means of a gearwheel transmission (110,112) (Fig. 5).
  10. Use of a thrust crank according to claim 5 for actuation of a device (162 and 164), which is movable with the slide (124) and simultaneously controllable, for the clamping of wire material or strip material (122) fed to a material-processing machine, wherein the cam disc (152) controls in friction-coupled manner the constrained motion of a cam roller (158) at a spring-loaded roller lever (156), which is pivotably mounted on the slide (124) and carries a retaining jaw (162) of the clamping device, the counter retaining jaw (164) of which is arranged in stationary position at the slide (144).
EP99114317A 1998-08-20 1999-07-21 Device connected to a crank for moving a part mounted on a slider relative thereto Expired - Lifetime EP0980727B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE29923474U DE29923474U1 (en) 1998-08-20 1999-07-21 Device on a push crank, for generating a movement of a part mounted on the slide relative to this

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19837756A DE19837756C1 (en) 1998-08-20 1998-08-20 Device for initiating rotary motion from the crankshaft into a crankshaft-driven slide
DE19837756 1998-08-20

Publications (3)

Publication Number Publication Date
EP0980727A2 EP0980727A2 (en) 2000-02-23
EP0980727A3 EP0980727A3 (en) 2000-06-21
EP0980727B1 true EP0980727B1 (en) 2001-10-31

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EP99114317A Expired - Lifetime EP0980727B1 (en) 1998-08-20 1999-07-21 Device connected to a crank for moving a part mounted on a slider relative thereto

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EP (1) EP0980727B1 (en)
DE (2) DE19837756C1 (en)
DK (1) DK0980727T3 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10050618C2 (en) * 2000-10-12 2003-04-24 Schuler Pressen Gmbh & Co Ejector system for a press
CZ22371U1 (en) 2011-05-13 2011-06-13 Ledwell S.R.O. Light fitting, especially reflector light fitting with rectified light flow
CN114737347B (en) * 2022-04-01 2023-02-28 江西泽晞新材料有限公司 Pattern printing equipment for artificial leather processing and use method thereof

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1864599U (en) * 1959-11-14 1962-12-27 Schuler L Ag CRANKSET OR ECCENTRIC DRIVE FOR A SLIDE IN PRESSES, PUNCHING OR. DGL.
DE2812695C3 (en) * 1978-03-23 1981-02-19 Hatebur Umformmaschinen Ag, Basel (Schweiz) Device for the punch-side ejection of a compact on a cross conveyor press for non-cutting metal forming
US4334436A (en) * 1980-08-21 1982-06-15 F. Jos. Lamb Company Bearing arrangement for oscillating shafts
DE3412147A1 (en) * 1984-03-31 1985-10-10 Form + Test Seidner + Co GmbH, 7940 Riedlingen Device for converting a rotary motion into translational motions
DE19521041C2 (en) * 1995-06-09 1999-06-24 Volker Dipl Ing Wengenroth Crank press with control of auxiliary devices in an oscillating press ram of single or multi-stage presses
JPH1162649A (en) * 1997-08-19 1999-03-05 Yoshihiro Ishikawa Internal combustion engine with varying distance between piston pin and crank pin
AUPO885297A0 (en) * 1997-09-01 1997-09-25 Bresland, Claude Neil Compression engine

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DE19837756C1 (en) 2000-04-06
DE59900372D1 (en) 2001-12-06
EP0980727A3 (en) 2000-06-21
EP0980727A2 (en) 2000-02-23
DK0980727T3 (en) 2001-12-17

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