EP0150043A2 - Feeding device for the step-by-step transport of material and/or work pieces, in particular in presses - Google Patents

Feeding device for the step-by-step transport of material and/or work pieces, in particular in presses Download PDF

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Publication number
EP0150043A2
EP0150043A2 EP85100418A EP85100418A EP0150043A2 EP 0150043 A2 EP0150043 A2 EP 0150043A2 EP 85100418 A EP85100418 A EP 85100418A EP 85100418 A EP85100418 A EP 85100418A EP 0150043 A2 EP0150043 A2 EP 0150043A2
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EP
European Patent Office
Prior art keywords
feed
drive
belt
transverse
advancement
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Granted
Application number
EP85100418A
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German (de)
French (fr)
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EP0150043A3 (en
EP0150043B1 (en
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Günter Zierpka
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Priority to AT85100418T priority Critical patent/ATE33459T1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D43/00—Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
    • B21D43/02—Advancing work in relation to the stroke of the die or tool
    • B21D43/04—Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work
    • B21D43/05—Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work specially adapted for multi-stage presses
    • B21D43/055—Devices comprising a pair of longitudinally and laterally movable parallel transfer bars

Definitions

  • the invention relates to a feed device for the gradual transport of material and / or workpieces, in particular in presses, with two gripper rails, which extend along the transport path at a distance from one another, reciprocally reciprocally in the feed direction and transversely thereto, and which run from transverse to the feed direction guided longitudinal guides which can be moved in opposite directions by means of a transverse drive and are fixed in the feed direction, but movable laterally to the latter, are connected to a feed slide which is guided in the feed direction and can be moved back and forth by means of a feed drive.
  • Feed devices of this type are known and are described, for example, in US Pat. No. 3,011,464 and DE - OS 22 06 407, in which the gripper rails extend at a distance from one another along the transport path revolving cam discs and suitable transmission elements in the feed direction can be moved back and forth together and are driven in opposite directions transversely to the feed direction.
  • the gripper rails extend at a distance from one another along the transport path revolving cam discs and suitable transmission elements in the feed direction can be moved back and forth together and are driven in opposite directions transversely to the feed direction.
  • the drive cam disks of cam disk drives are extremely complex.
  • the working strokes are fixed in the respective direction of movement with the dimensioning of the drive cam disks, adaptability to changed operating conditions is not possible or is possible only with disproportionately great effort.
  • a transmission gear with an adjustable stroke is provided between a feed carriage which is guided in a derivation from a drive cam disk in the feed direction, and which provides a certain change in the working stroke within predetermined limits in the feed direction.
  • a feed device with such a transmission gear in the feed drive is also very expensive.
  • the object on which the invention is based is to provide a feed device for step-by-step material and workpiece transport which is simple in construction and which is inexpensive in comparison to the known devices of this type and which is intended in particular for use in presses, but is not limited to this application.
  • a belt drive is provided with a practically backlash-free toothed belt, which is operatively connected to the gripper rails via suitable transmission means.
  • the feed drive for generating the back and forth movements of the gripper rails is designed as a belt drive
  • the one strand of the toothed belt belonging to the feed drive is firmly connected to the feed slide as a transmission element, so that depending on a feed or Return of this run of the toothed belt of the feed carriage is moved back and forth, which, in view of the coupling of the gripper rails which is fixed in the feed direction, leads to a common back and forth movement of the gripper rails.
  • the Belt drive under the feed carriage in the feed direction and with the latter, the upper run of the toothed belt is firmly connected.
  • the feed drive has two belt drives arranged at a distance from one another transversely to the feed direction, each with a toothed belt each firmly connected to the feed carriage with a belt, the belt drives expediently arranged at the same lateral spacing from a central plane between the gripper rails are and the axes of rotation of the two belt drives leading each on one side are aligned.
  • the above-mentioned deflection pulleys, which guide the two toothed belts, on each side of the belt drives can be accommodated 4t advantage on a common shaft.
  • deflection rollers guiding the two toothed belts of the feed drive on one side of the belt drives are driven by a motor which is expediently arranged between the aforementioned deflection rollers.
  • This drive motor can be a known stepping motor which can be reversed with regard to its direction of rotation or, for example, a motor with quadrant control. Instead of such an electric motor, a reversible hydraulic motor can also be used.
  • the one strand of the toothed belt belonging to the transverse drive is firmly connected to the transverse longitudinal guide of the one gripper rail as a transmission element, while the other strand of this toothed belt is operatively connected in a suitable manner to the transverse longitudinal guide of the other gripper rail, for example by also firmly connecting this other strand layer to the longitudinal guide of the second gripper rail mentioned.
  • transverse drive extends transversely to the feed direction under the transverse longitudinal guides of the gripper rails.
  • the axes of rotation of the deflection rollers guiding the toothed belt can extend in the longitudinal direction of the gripper rails and in the feed direction.
  • the upper belt layer of the toothed belt is firmly connected to the longitudinal guide of the one gripper rail, whereas the lower belt layer is guided with a slide which is movable transversely to the feed direction and in turn is coupled to the longitudinal guide of the other gripper rail, so that the necessary Slider and therefore the coupled with this gripper rail depending on the forward and return movements of the toothed belt executes opposite movements to the gripper rail, the transverse longitudinal guide is directly connected to the upper belt section of the toothed belt.
  • a design feature of the invention is that the operative connection between the one strand of the toothed belt and the transmission element consists of a retensionable turnbuckle, this turnbuckle having at least one threaded bolt screwed into a threaded hole of a driver section of the transmission element.
  • This transmission element can, in the case of the feed drive, be the feed slide which is guided to move back and forth in the case of the feed drive, in the case of the cross drive it can be the transverse longitudinal guides of the gripper rails or one of these longitudinal guides and a slide which is coupled to a strand of the associated toothed belt, which in turn is coupled is coupled to the longitudinal guide of the other gripper rail so that it can move transversely.
  • two gripper rails 11, 12 extend along the feed path, for example through a press, at a distance from one another, which in turn are accommodated in the manner to be described laterally driven longitudinal guides 13, 14 and with a feed slide in the feed direction are fixed, but are coupled transversely.
  • the feed carriage is guided in the feed direction by means of two rod guides 16, 17, which extend at a distance from one another in the direction of the gripper rails 11, 12 and underneath them, and guide bushings 18, 19 received on these.
  • the feed carriage 15 is driven by means of two belt drives 20, 21, each with a toothed belt 26, 27 guided over deflection rollers 22, 23 and 24, 25, the axes of rotation of which run at right angles to the feed direction, which extend in the feed direction.
  • These belt drives are in the area between the two guide rods 16, 17 for guiding of the feed carriage 15 and the respective upper strand position of the two toothed belts 26, 27 is coupled via two turnbuckles 28, 29 and 30, 31 to a connecting section 32 extending underneath from the feed carriage.
  • each turnbuckle a section of the toothed belt is held by clamping in a manner of no further interest here, and a threaded bolt 33 extends on the side remote from the toothed belt, which is screwed into a corresponding threaded hole 34 of the connecting section 32 by the feed slide. It can be seen that the toothed belt can be tensioned by screwing the threaded bolts more or less deeply into the receiving hole of the connecting section.
  • the two guide rollers guiding the toothed belts 26, 27 are accommodated on one side of the feed carriage 15 on axially aligned shafts 36, 37 and 38, 39, respectively.
  • An electric motor 40 which generates the forward and return movements of the feed carriage 15 and thus also the gripper rails 11, 12 is arranged between the shafts 38, 39.
  • the coupling of the gripper rails 11, 12 to the feed slide 15, which is fixed in the feed direction but movable transversely to the feed direction, consists of drivers 41, 42 arranged on the underside of the gripper rails, which engage in a top-side groove 43 of the feed slide 15 which extends transversely to the feed direction.
  • Fig. 4 shows the formation of a transverse guide unit 45 with the two spaced apart and in the longitudinal guides 13, 14, which are in turn transversely guided, gripper rails 11, 12.
  • the longitudinal guides for the gripper rails are in turn arranged on guide plates 46, 47, which are movably guided transversely to the feed direction in corresponding guides 48 of the transverse guide unit.
  • a belt drive 50 which extends transversely to the feed direction and has a toothed belt 53 which is guided over two deflection rollers 51, 52 which are arranged at a distance from one another and whose axes of rotation extend in the feed direction, the upper belt position of which was explained in connection with FIG.
  • the upper and lower run of the toothed belt 53 perform opposite movements, in terms of amount, which, given the coupling of these runs to the a cross guide plate 47 receiving a gripper rail longitudinal guide on the one hand and the slide 60 connected to the cross guide plate 46 of the other gripper rail longitudinal guide on the other hand are transferred to the gripper rails 11, 12 and are independent of the common forward and return movements of the gripper rails in the feed direction.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transmission Devices (AREA)
  • Feeding Of Workpieces (AREA)
  • Forging (AREA)
  • Advancing Webs (AREA)
  • Reciprocating Conveyors (AREA)

Abstract

The present invention relates to an advancement device particularly adapted for use in a press for step-wise transport of material or of a workpiece; two gripper rails spaced from one another extend therein along a transport path. The gripper rails are reciprocally movable together along an advancement direction, while being movable in respective opposite directions along a direction transverse to the advancement direction. Two longitudinal guides receive the gripper rails, respectively, and a transverse drive drives the longitudinal guides in the respective opposite directions along the transverse direction. An advancement sled is reciprocally movable along the advancement direction, and an advancement drive drives the advancement sled reciprocally along the advancement direction. The gripper rails are connected to the advancement sled rigidly along the advancement direction, but are movably connected thereto along the transverse direction. The improvement includes at least one drive being a wrap-around drive, which defines a drive direction, and wherein the wrap-around drive includes two rerouting rollers spaced from one another, each defining an axis of rotation extending approximately at right angles to the drive direction, a toothed belt guided over the rerouting rollers, and having oppositely movable belt strands, a transfer device movable along the drive direction, and a connecting arrangement rigidly connecting at least one of the strands to the transfer device, and wherein the transfer device is operatively connected to the gripper rails.

Description

Die Erfindung bezieht sich auf eine Vorschubeinrichtung zum schrittweisen Material- und/oder Werkstücktransport, insbesondere in Pressen, mit zwei sich längs des Transportweges im Abstand voneinander erstreckenden, in Vorschubrichtung gemeinsam hin- und her und quer dazu gegenläufig bewegbaren Greiferschienen, die von quer zur Vorschubrichtung geführten, mittels eines Querantriebs gegenläufig bewegbaren Längsführungen aufgenommen und in Vorschubrichtung fest, jedoch zu letzterer querbeweglich, mit einem in Vorschubrichtung geführten und mittels eines Vorschubantriebs hin- und herbewegbaren Vorschubschlitter verbunden sind.The invention relates to a feed device for the gradual transport of material and / or workpieces, in particular in presses, with two gripper rails, which extend along the transport path at a distance from one another, reciprocally reciprocally in the feed direction and transversely thereto, and which run from transverse to the feed direction guided longitudinal guides which can be moved in opposite directions by means of a transverse drive and are fixed in the feed direction, but movable laterally to the latter, are connected to a feed slide which is guided in the feed direction and can be moved back and forth by means of a feed drive.

Vorschubeinrichtungen dieser Art sind bekannt und beispielsweise in der US-PS 3 011 464 und der DE-OS 22 06 407 beschrieben, bei denen die sich längs des Transportweges im Abstand voneinander erstreckenden Greiferschienen mittels umlaufender Kurvenscheiben und geeigneter übertragungselemente in Vorschubrichtung gemeinsam hin- und herbewegbar und quer zur Vorschubrichtung gegenläufig angetrieben sind. Angesichts der Genauigkeitserfordernisse bei den Antriebskurvenscheiben von Kurvenscheibenantrieben sind derartige Vorschubeinrichtungen außerordentlich aufwendig. Da mit der Dimensionierung der Antriebskurvenscheiben die Arbeitshübe in der jeweiligen Bewegungsrichtung fest liegen, ist darüber hinaus eine Anpaßbarkeit an veränderte Betriebsverhältnisse nicht oder nur mit unverhältnismäßig großem Aufwand möglich.Feed devices of this type are known and are described, for example, in US Pat. No. 3,011,464 and DE - OS 22 06 407, in which the gripper rails extend at a distance from one another along the transport path revolving cam discs and suitable transmission elements in the feed direction can be moved back and forth together and are driven in opposite directions transversely to the feed direction. In view of the accuracy requirements for the drive cam disks of cam disk drives, such feed devices are extremely complex. In addition, since the working strokes are fixed in the respective direction of movement with the dimensioning of the drive cam disks, adaptability to changed operating conditions is not possible or is possible only with disproportionately great effort.

So ist bei einer vorbekannten Vorschubeinrichtung, die in der DE-AS 28 14 118 beschrieben ist, zwischen einem in Ableitung von einer Antriebskurvenscheibe in Vorschubrichtung hin- und herbewegbar geführten Vorschubschlitten ein übersetzungsgetriebe mit einstellbarem Hub vorgesehen, das innerhalb vorbestimmter Grenzen eine gewisse Veränderung des Arbeitshubes in Vorschubrichtung ermöglicht. Naturgemäß baut auch eine Vorschubeinrichtung mit einem derartigen übersetzungsgetriebe im Vorschubantrieb sehr aufwendig.For example, in a previously known feed device, which is described in DE-AS 28 14 118, a transmission gear with an adjustable stroke is provided between a feed carriage which is guided in a derivation from a drive cam disk in the feed direction, and which provides a certain change in the working stroke within predetermined limits in the feed direction. Naturally, a feed device with such a transmission gear in the feed drive is also very expensive.

Demgegenüber besteht die der Erfindung zugrundeliegende Aufgabe in der Schaffung einer im Aufbau einfachen, im Vergleich zu den vorbekannten Einrichtungen dieser Art kostengünstigen Vorschubeinrichtung zum schrittweisen Material- und Werkstücktransport, die insbesondere zur Verwendung in Pressen bestimmt, nicht aber auf diesen Anwendungsfall beschränkt ist.In contrast, the object on which the invention is based is to provide a feed device for step-by-step material and workpiece transport which is simple in construction and which is inexpensive in comparison to the known devices of this type and which is intended in particular for use in presses, but is not limited to this application.

Diese Aufgabe ist erfindungsgemäß dadurch gelöst, daß bei einer Vorschubeinrichtung nach dem Oberbegriff des Patentanspruchs 1 der Vorschubantrieb und/oder der Queren antrieb ein/Umschlingungstrieb mit einem über zwei im Abstand voneinander angeordnete Umlenkrollen, deren Drehachsen sich senkrecht zu der jeweiligen Bewegungsrichtung der Greiferschienen erstrecken, geführten Zahnriemen aufweist und daß eine Trumlage dieses Zahnriemens mit einem in der betreffenden Bewegungsrichtung der Greiferschienen geführten und mit letzteren wirkverbundenen übertragungselement fest gekuppelt ist.This object is achieved in that in a feed device according to the preamble of claim 1, the feed drive and / or the cross drive drive / belt drive with one over two spaced-apart deflection rollers, whose axes of rotation extend perpendicular to the respective direction of movement of the gripper rails, has guided toothed belt and that a strand of this toothed belt is firmly coupled to a transmission element guided in the relevant direction of movement of the gripper rails and operatively connected to the latter.

Anstelle der bei bekannten Vorschubeinrichtungen dieser Art eingesetzten aufwendigen Kurvenscheibenantriebe ist bei der Erfindung zum Erzeugen der Antriebsbewegungen der Greiferschienenin wenigstens einer Bewegungsrichtung ein Umschlingungstrieb mit einem praktisch spielfrei arbeitenden Zahnriemen vorgesehen, der über geeignete übertragungsmittel mit den Greiferschienen in Wirkverbindung steht.Instead of the complex cam drives used in known feed devices of this type, in the invention for generating the drive movements of the gripper rails in at least one direction of movement, a belt drive is provided with a practically backlash-free toothed belt, which is operatively connected to the gripper rails via suitable transmission means.

Soweit der Vorschubantrieb zum Erzeugen der hin- und hergehenden Bewegungen der Greiferschienen'als Umschlingungstrieb ausgebildet ist, ist bei einer Ausgestaltung der Erfindung die eine Trumlage des zum Vorschubantrieb gehörenden Zahnriemens mit dem Vorschubschlitten als übertragungselement fest verbunden, so daß in Abhängigkeit von einem Vor-oder Rücklauf dieser Trumlage des Zahnriemens der Vorschubschlitten hin-und herbewegt wird, was angesichts der in Vorschubrichtung festen Kupplung der Greiferschienen an den Vorschubschlitten zu einer gemeinsamen Hin- und Herbewegung der Greiferschienen führt. Nach einem weiteren Ausgestaltungsmerkmal der Erfindung erstreckt sich der Umschlingungstrieb unter dem Vorschubschlitten in Vorschubrichtung und mit letzterem ist die obere Trumlage des Zahnriemens fest verbunden.Insofar as the feed drive for generating the back and forth movements of the gripper rails is designed as a belt drive, in one embodiment of the invention the one strand of the toothed belt belonging to the feed drive is firmly connected to the feed slide as a transmission element, so that depending on a feed or Return of this run of the toothed belt of the feed carriage is moved back and forth, which, in view of the coupling of the gripper rails which is fixed in the feed direction, leads to a common back and forth movement of the gripper rails. According to a further feature of the invention, the Belt drive under the feed carriage in the feed direction and with the latter, the upper run of the toothed belt is firmly connected.

Ein anderes Ausgestaltungsmerkmal der Erfindung sieht vor, daß der Vorschubantrieb zwei quer zur Vorschubrichtung im Abstand voneinander angeordnete Umschlingungstriebe mit je einem jeweils mit einer Trumlage fest mit dem Vorschubschlitten verbundenen Zahnriemen aufweist, wobei die Umschlingungstriebe zweckmäßigerweise in gleichen seitlichen Abständen von einer Mittelebene zwischen den Greiferschienen angeordnet sind und die Drehachsen der die beiden Umschlingungstriebe auf jeweils einer Seite führenden Umlenkrollen miteinander fluchten. Die genannten, die beiden Zahnriemen führenden Umlenkrollen auf jeweils einer Seite der Umschlingungstriebe können dabei 4t Vorteil auf einer gemeinsamen Welle aufgenommen sein.Another design feature of the invention provides that the feed drive has two belt drives arranged at a distance from one another transversely to the feed direction, each with a toothed belt each firmly connected to the feed carriage with a belt, the belt drives expediently arranged at the same lateral spacing from a central plane between the gripper rails are and the axes of rotation of the two belt drives leading each on one side are aligned. The above-mentioned deflection pulleys, which guide the two toothed belts, on each side of the belt drives can be accommodated 4t advantage on a common shaft.

Ein anderes Ausgestaltungsmerkmal sieht vor, daß die die beiden Zahnriemen des Vorschubantriebs auf einer Seite der Umschlingungstriebe führenden Umlenkrollen von einem Motor angetrieben werden, der zweckmäßigerweise zwischen den genannten Umlenkrollen angeordnet ist. Bei diesem Antriebsmotor kann es sich um einen bekannten, hinsichtlich seiner Drehrichtung umsteuerbaren Schrittschaltmotor oder beispielsweise um einen Motor mit Quadranten-Steuerung handeln. Anstelle eines derartigen Elektromotors kann aber auch ein umsteuerbarer Hydraulikmotor Verwendung finden.Another design feature provides that the deflection rollers guiding the two toothed belts of the feed drive on one side of the belt drives are driven by a motor which is expediently arranged between the aforementioned deflection rollers. This drive motor can be a known stepping motor which can be reversed with regard to its direction of rotation or, for example, a motor with quadrant control. Instead of such an electric motor, a reversible hydraulic motor can also be used.

Bei der Ausrüstung des Querantriebs zum Erzeugen der Schließ- und öffnungsbewegungen der Greiferschienen mit einem einen Zahnriemen aufweisenden Umschlingungstrieb besteht ein weiteres wichtiges Ausgestaltungsmerkmal der Erfindung darin, daß die eine Trumlage des zum Querantrieb gehörenden Zahnriemens mit der querbeweglichen Längsführung der einen Greiferschiene als übertragungselement fest verbunden ist, während die andere Trumlage dieses Zahnriemens in geeigneter Weisenit der querbeweglichen Längsführung der anderen Greiferschiene in Wirkverbindung steht, etwa indem diese andere Trumlage mit der Längsführung der genannten zweiten Greiferschiene ebenfalls fest verbunden ist.When equipping the transverse drive to generate the closing and opening movements of the gripper rails with a belt drive having a toothed belt there is a further important feature of the invention that the one strand of the toothed belt belonging to the transverse drive is firmly connected to the transverse longitudinal guide of the one gripper rail as a transmission element, while the other strand of this toothed belt is operatively connected in a suitable manner to the transverse longitudinal guide of the other gripper rail, for example by also firmly connecting this other strand layer to the longitudinal guide of the second gripper rail mentioned.

Eine zweckmäßige Ausgestaltung des Querantriebs besteht darin, daß sich der zugehörige Umschlingungstrieb quer zur Vorschubrichtung unter den querbeweglichen Längsführungen der Greiferschienen erstreckt. Dabei können die Drehachsen der den Zahnriemen führenden Umlenkrollen sich in Längsrichtung der Greiferschienen undnithin in Vorschubrichtung erstrecken.An expedient embodiment of the transverse drive is that the associated belt drive extends transversely to the feed direction under the transverse longitudinal guides of the gripper rails. The axes of rotation of the deflection rollers guiding the toothed belt can extend in the longitudinal direction of the gripper rails and in the feed direction.

Bei einer derartigen Ausgestaltung ist es von Vorteil, wenn diecbere Trumlage des Zahnriemens mit der Längsführung der einen Greiferschiene fest verbunden ist, hingegen die untere Trumlage mit einem quer zur Vorschubrichtung bewegbar geführten und seinerseits mit der Längsführung der anderen Greiferschiene gekuppelten Schieber, so daß notwendig der Schieber und demzufolge die mit diesem gekuppelte Greiferschiene in Abhängigkeit von den Vor- und Rücklaufbewegungen des Zahnriemens gegenläufige Bewegungen zu der Greiferschiene ausführt, deren querbewegliche Längsführung unmittelbar mit der oberen Trumlage des Zahnriemens fest verbunden ist.In such a configuration, it is advantageous if the upper belt layer of the toothed belt is firmly connected to the longitudinal guide of the one gripper rail, whereas the lower belt layer is guided with a slide which is movable transversely to the feed direction and in turn is coupled to the longitudinal guide of the other gripper rail, so that the necessary Slider and therefore the coupled with this gripper rail depending on the forward and return movements of the toothed belt executes opposite movements to the gripper rail, the transverse longitudinal guide is directly connected to the upper belt section of the toothed belt.

Schließlich besteht ein Ausgestaltungsmerkmal der Erfindung darin, daß die Wirkverbindung zwischen der einen Trumlage des Zahnriemens und dem Übertragungselement aus einem nachspannbaren Spannschloß besteht, wobei dieses Spannschloß wenigstens einen in ein Gewindeloch eines Mitnehmerabschnittes des Übertragungselements eingeschraubten Gewindebolzen aufweist. Bei diesem übertragungselement kann es sich im Falle des Vorschubantriebs um den in Vorschubrichtung hin- und herbewegbar geführten Vorschubschlitten handeln, im Falle des Querantriebs um die querbeweglichen Längsführungen der Greiferschienen oder um eine dieser Längsführungen und einen mit einer Trumlage des zugeordneten Zahnriemens gekuppelten Schieber, der seinerseits mit der Längsführung der anderen Greiferschiene querbeweglich fest gekuppelt ist.Finally, a design feature of the invention is that the operative connection between the one strand of the toothed belt and the transmission element consists of a retensionable turnbuckle, this turnbuckle having at least one threaded bolt screwed into a threaded hole of a driver section of the transmission element. This transmission element can, in the case of the feed drive, be the feed slide which is guided to move back and forth in the case of the feed drive, in the case of the cross drive it can be the transverse longitudinal guides of the gripper rails or one of these longitudinal guides and a slide which is coupled to a strand of the associated toothed belt, which in turn is coupled is coupled to the longitudinal guide of the other gripper rail so that it can move transversely.

Eine Ausführungsform der Erfindung soll nachstehend anhand der beigefügten Zeichnung erläutert werden. In schematischen Ansichten zeigen:

  • Fig. 1 eine Draufsicht auf den mit zwei im Abstand voneinander angeordneten Umschlingungstrieben ausgerüsteten Vorschubantrieb der Vorschubeinrichtung mit abgebrochen dargestellten Greiferschienen,
  • Fig. 2 in einer Schnittansicht gemäß der Schnittlinie II-II in Fig. 1 den Vorschubantrieb mit dem mittels eines über Umlenkrollen geführten Zahnriemens angetriebenen Vorschubschlitten bei Weglassung der mit letzterem in Vorschubrichtung fest, jedoch querbeweglich gekuppelten Greiferschienen,
  • Fig. 3 einen Querschnitt gemäß der Schnittlinie III-III in Fig. 2 durch den Vorschubantrieb mit dem hin- und herbeweglich geführten Vorschubschlitten und
  • Fig. 4 in einer Seitenansicht ähnlich Fig. 3 eine Querführungseinheit mit den querbeweglich geführten Längsführungen der Greiferschienen und dem Querantrieb zum Erzeugen der gegenläufigen Greiferschließ- und -öffnungsbewegungen.
An embodiment of the invention will be explained below with reference to the accompanying drawings. Schematic views show:
  • 1 is a plan view of the feed drive of the feed device equipped with two spaced-apart belt drives with the gripper rails shown broken off,
  • 2 in a sectional view according to section line II-II in FIG. 1, the feed drive with the feed slide driven by means of a toothed belt guided over deflection rollers, with the omission of the gripper rails which are coupled with the latter in the feed direction but transversely movable,
  • Fig. 3 shows a cross section along the section line III-III in Fig. 2 by the feed drive with the back and forth feed carriage and
  • Fig. 4 in a side view similar to Fig. 3 shows a transverse guide unit with the longitudinally guided longitudinal guides of the gripper rails and the transverse drive for generating the opposite gripper closing and opening movements.

Bei der in der Zeichnung dargestellten Vorschubeinrichtung 10 erstrecken sich längs des Vorschubweges, etwa durch eine Presse,im Abstand voneinander zwei Greiferschienen 11, 12, die in ihrerseits in unten noch zu beschreibender Weise querbeweglich angetriebenen Längsführungen 13, 14 aufgenommen und mit einem Vorschubschlitten in Vorschubrichtung fest, jedoch querbeweglich gekuppelt sind. Der Vorschubschlitten ist in Vorschubrichtung mittels zweier Stangenführungen 16, 17, die sich im Abstand voneinander in Richtung der Greiferschienen 11, 12 und unter diesen erstrecken, und auf diesen aufgenommener Führungsbuchsen 18, 19 hin- und herbeweglich geführt.In the feed device 10 shown in the drawing, two gripper rails 11, 12 extend along the feed path, for example through a press, at a distance from one another, which in turn are accommodated in the manner to be described laterally driven longitudinal guides 13, 14 and with a feed slide in the feed direction are fixed, but are coupled transversely. The feed carriage is guided in the feed direction by means of two rod guides 16, 17, which extend at a distance from one another in the direction of the gripper rails 11, 12 and underneath them, and guide bushings 18, 19 received on these.

Angetrieben wird der Vorschubschlitten 15 mittels zweier Umschlingungstriebe 20, 21 mit je einem über Umlenkrollen 22, 23 bzw. 24, 25 , deren Drehachsen rechtwinklig zur Vorschubrichtung verlaufen, geführten Zahnriemen 26, 27 , die sich in Vorschubrichtung erstrecken. Diese Umschlingungstriebe sind im Bereich zwischen den beiden Führungsstangen 16, 17 zum Führen des Vorschubschlittens 15 angeordnet und die jeweils obere Trumlage der beiden Zahnriemen 26, 27 ist über zwei Spannschlösser 28, 29 bzw. 30, 31 mit einem sich unterseitig vom Vorschubschlitten forterstreckenden Verbindungsabschnitt 32 gekuppelt. Innerhalb eines jeden Spannschlosses ist ein Abschnitt des Zahnriemens in hier nicht weiter interessierender Weise durch Klemmung gehalten und auf der vom Zahnriemen entfernten Seite erstreckt sich je ein Gewindebolzen 33 fort, der in ein entsprechendes Gewindeloch 34 des Verbindungsabschnittes 32 vom Vorschubschlitten eingeschraubt ist. Es ist ersichtlich, daß durch mehr oder weniger tiefes Einschrauben der genannten Gewindebolzen in das Aufnahmeloch des Verbindungsabschnittes die Zahnriemen gespannt werden können.The feed carriage 15 is driven by means of two belt drives 20, 21, each with a toothed belt 26, 27 guided over deflection rollers 22, 23 and 24, 25, the axes of rotation of which run at right angles to the feed direction, which extend in the feed direction. These belt drives are in the area between the two guide rods 16, 17 for guiding of the feed carriage 15 and the respective upper strand position of the two toothed belts 26, 27 is coupled via two turnbuckles 28, 29 and 30, 31 to a connecting section 32 extending underneath from the feed carriage. Within each turnbuckle, a section of the toothed belt is held by clamping in a manner of no further interest here, and a threaded bolt 33 extends on the side remote from the toothed belt, which is screwed into a corresponding threaded hole 34 of the connecting section 32 by the feed slide. It can be seen that the toothed belt can be tensioned by screwing the threaded bolts more or less deeply into the receiving hole of the connecting section.

Wie insbesondere Fig. 1 zeigt, sind die beide-n die Zahnriemen 26, 27 führenden Umlenkrollen auf einer Seite des Vorschubschlittens 15 auf miteinander fluchtenden Wellen 36, 37 bzw. 38, 39 aufgenommen. Zwischen den Wellen 38, 39 ist ein die Vor- und Rücklaufbewegungen des Vorschubschlittens 15 und damit auch der Greiferschienen 11, 12 erzeugender Elektromotor 40 angeordnet. Die in Vorschubrichtung feste, jedoch quer zur Vorschubrichtung bewegliche Ankupplung der Greiferschienen 11, 12 an den Vorschubschlitten 15 besteht aus unterseitig an den Greiferschienen angeordneten Mitnehmern 41, 42, die in eine oberseitige, sich quer zur Vorschubrichtung erstreckende Nut 43 des Vorschubschlittens 15 eingreifen.As is shown in particular in FIG. 1, the two guide rollers guiding the toothed belts 26, 27 are accommodated on one side of the feed carriage 15 on axially aligned shafts 36, 37 and 38, 39, respectively. An electric motor 40 which generates the forward and return movements of the feed carriage 15 and thus also the gripper rails 11, 12 is arranged between the shafts 38, 39. The coupling of the gripper rails 11, 12 to the feed slide 15, which is fixed in the feed direction but movable transversely to the feed direction, consists of drivers 41, 42 arranged on the underside of the gripper rails, which engage in a top-side groove 43 of the feed slide 15 which extends transversely to the feed direction.

Fig. 4 zeigt die Ausbildung einer Querführungseinheit 45 mit den zwei im Abstand voneinander angeordneten und in den ihrerseits quer beweglich geführten Längsführungen 13, 14 aufgenommenen Greiferschienen 11, 12. Die Längsführungen für die Greiferschienen sind ihrerseits auf Führungsplatten 46, 47 engeordnet, die quer zur Vorschubrichtung in entsprechenden Führungen 48 der Querführungseinheit bewegbar geführt sind. Innerhalb der Querführungseinheit ist ein sich quer zur Vorschubrichtung erstreckender Umschlingungstrieb 50 mit einem über zwei im Abstand voneinander angeordnete Umlenkrollen 51, 52, deren Drehachsen sich in Vorschubrichtung erstrecken, geführten Zahnriemen 53 angeordnet, dessen obere Trumlage in der oben in Verbindung mit Fig. 2 erläuterten Weise mittels zweier Spannschlösser 54, 55 mit einem Verbindungsabschnitt 56 der die Längsführung 14 der einen Greiferschiene 12 tragenden Querführungsplatte 47 verbunden ist. Die untere Trumlage des Zahnriemens 53 des Umschlingungstriebs ist ebenfalls mittels zweier Spannschlösser 57 , 58 fest an einen Verbindungsabschnitt 59 eines Schiebers 60 angekuppelt, der seinerseits in einer Führung 61 der Querführungseinheit 45 quer zur Vorschubrichtung beweglich geführt ist und über eine aus einem Kupplungszapfen 62 und einem Kupplungsgegenstück 63 bestehende Kupplung mit der die Längsführung 13 der die andere Greiferschiene 11 aufnehmenden Querführungsplatte 46 verbunden ist.Fig. 4 shows the formation of a transverse guide unit 45 with the two spaced apart and in the longitudinal guides 13, 14, which are in turn transversely guided, gripper rails 11, 12. The longitudinal guides for the gripper rails are in turn arranged on guide plates 46, 47, which are movably guided transversely to the feed direction in corresponding guides 48 of the transverse guide unit. Arranged within the transverse guide unit is a belt drive 50 which extends transversely to the feed direction and has a toothed belt 53 which is guided over two deflection rollers 51, 52 which are arranged at a distance from one another and whose axes of rotation extend in the feed direction, the upper belt position of which was explained in connection with FIG. 2 above Way by means of two turnbuckles 54, 55 with a connecting section 56 which is connected to the longitudinal guide 14 of the cross guide plate 47 carrying a gripper rail 12. The lower run of the toothed belt 53 of the belt drive is also fixedly coupled by means of two turnbuckles 57, 58 to a connecting section 59 of a slide 60, which in turn is movably guided in a guide 61 of the transverse guide unit 45 transversely to the feed direction and via one of a coupling pin 62 and one Coupling counterpart 63 existing coupling with which the longitudinal guide 13 of the transverse guide plate 46 receiving the other gripper rail 11 is connected.

Bei einem entsprechenden Vor- und Rücklauf des Umschlingungstriebs 50, der beispielsweise von einem umsteuerbaren Schrittschaltmotor angetrieben ist, führen die obere und untere Trumlage des Zahnriemens 53 gegenläufige, dem Betrage nach gleiche Bewegungen aus, die angesichts der Ankupplung dieser Trumlagen an die die eine Greiferschienenlängsführung aufnehmende Querführungsplatte 47 einerseits und den mit der Querführungsplatte 46 der anderen Greiferschienenlängsführung verbundenen Schieber 60 andererseits auf die Greiferschienen 11, 12 übertragen werden und von den gemeinsamen Vor- und Rücklaufbewegungen der Greiferschienen in Vorschubrichtung unabhängig sind.With a corresponding forward and return of the belt drive 50, which is driven, for example, by a reversible stepper motor, the upper and lower run of the toothed belt 53 perform opposite movements, in terms of amount, which, given the coupling of these runs to the a cross guide plate 47 receiving a gripper rail longitudinal guide on the one hand and the slide 60 connected to the cross guide plate 46 of the other gripper rail longitudinal guide on the other hand are transferred to the gripper rails 11, 12 and are independent of the common forward and return movements of the gripper rails in the feed direction.

Claims (14)

1. Vorschubeinrichtung zum schrittweisen Material-und/oder Werkstücktransport, insbesondere in Pressen, mit zwei sich längs des Transportweges im Abstand voneinander erstreckenden, in Vorschubrichtung gemeinsam hin- und her und quer dazu gegenläufig bewegbaren Greiferschienen, die von quer zur Vorschubrichtung geführten, mittels eines Querantriebs gegenläufig bewegbaren Längsführungen aufgenommen und in Vorschubrichtung fest, jedoch zu letzterer querbeweglich mit einem in Vorschubrichtung geführten und mittels eines Vorschubantriebs hin- und herbewegbaren Vorschubschlitten verbunden sind, dadurch gekennzeichnet,
daß der Vorschubantrieb und/oder der Querantrieb einen Umschlingungstrieb (20, 21, 50) mit einem über zwei im Abstand voneinander angeordnete Umlenkrollen, deren Drehachsen sich senkrecht zu der jeweiligen Bewegungsrichtung der Greiferschienen (11, 12) erstrecken, geführten Zahnriemen (26, 27, 53) aufweist und daß eine Trumlage dieses Zahnriemens mit einem in der betreffenden Bewegungsrichtung der Greiferschienen geführten und mit letzteren wirkverbundenen übertragungselement (15, 47, 60) fest gekuppelt ist.1. Feed device for step-by-step material and / or workpiece transport, in particular in presses, with two gripper rails that extend along the transport path at a distance from one another, reciprocally reciprocally in the feed direction and transversely to it, and which are guided from transverse to the feed direction by means of a Transverse drive longitudinal guides movable in opposite directions and fixed in the feed direction, but connected to the latter transversely with a feed carriage guided in the feed direction and reciprocable by means of a feed drive, characterized in that
that the feed drive and / or the transverse drive a belt drive (20, 21, 50) with a toothed belt (26, 27.) guided over two deflection rollers arranged at a distance from one another, the axes of rotation of which extend perpendicular to the respective direction of movement of the gripper rails (11, 12) , 53) and that a The belt of this toothed belt is firmly coupled to a transmission element (15, 47, 60) which is guided in the relevant direction of movement of the gripper rails and is operatively connected to the latter. 2. Vorschubeinrichtung nach Anspruch 1, dadurchgekennzeichnet, daß die eine Trumlage des zum Vorschubantrieb gehörenden Zahnriemens (26, 27) mit dem Vorschubschlitten (15) als übertragungselement fest verbunden ist.2. Feed device according to claim 1, characterized in that the one strand of the toothed belt belonging to the feed drive (26, 27) with the feed carriage (15) is fixedly connected as a transmission element. 3. Vorschubeinrichtung nach Anspruch 2, dadurch gekennzeichnet, daß der Umschlingungstrieb (20, 21) sich unter dem Vorschubschlitten (15) erstreckt und daß mit letzterem die obere Trumlage des Zahnriemens (26, 27) fest verbunden ist.3. Feed device according to claim 2, characterized in that the belt drive (20, 21) extends under the feed carriage (15) and that the upper run of the toothed belt (26, 27) is firmly connected to the latter. 4. Vorschubeinrichtung nach Anspruch 2 oder 3, dadurch gekennzeichnet, daß der Vorschubantrieb zwei quer zur Vorschubrichtung im Abstand voneinander angeordnete Umschlingungstriebe (20, 21) mit je einem jeweils mit einer Trumlage fest mit dem Vorschubschlitten (15) verbundenen Zahnriemen (26, 27) aufweist.4. Feed device according to claim 2 or 3, characterized in that the feed drive two transversely to the feed direction at a distance from each other belt drives (20, 21), each with a strand with the feed carriage (15) connected to the toothed belt (26, 27) having. 5. Vorschubeinrichtung nach Anspruch 4, dadurch gekennzeichnet, daß die Drehachsen der die beiden Zahnriemen (26, 27) der Umschlingungstriebe (20, 21) auf jeweils einer Seite führenden Umlenkrollen (22, 24 bzw. 23, 25) miteinander fluchten.5. Feed device according to claim 4, characterized in that the axes of rotation of the two toothed belts (26, 27) of the belt drives (20, 21) on each side leading deflection rollers (22, 24 and 23, 25) are aligned. 6. Vorschubeinrichtung nach Anspruch 4 oder 5, dadurch gekennzeichnet, daß die die beiden Zahnriemen (26, 27) führenden Umlenkrollen (22, 24 bzw. 23, 25) auf jeweils einer Seite der Umschlingungstriebe (20, 21) auf einer gemeinsamen welle aufgenommen sind.6. Feed device according to claim 4 or 5, characterized in that the two toothed belts (26, 27) leading deflection rollers (22, 24 or 23, 25) on each side of the belt drives (20, 21) on a common shaft are. 7. Vorschubeinrichtung nach einem der Ansprüche 4 bis 6, dadurch gekennzeichnet, daß die die beiden Zahnriemen (26, 27) azf einer Seite der Umschlingungstriebe (20, 21) führenden Umlenkrollen (22, 24) von einem Motor (40) angetrieben sind.7. Feed device according to one of claims 4 to 6, characterized in that the two toothed belts (26, 27) azf one side of the belt drives (20, 21) leading pulleys (22, 24) are driven by a motor (40). 8. Vorschubeinrichtung nach Anspruch 7, dadurch gekennzeichnet, daß der Motor (40) zwischen den die Zahnriemen (26, 27) auf einer Seite der Umschlingungstriebe (20, 21) führenden Umlenkrollen (22, 24) angeordnet ist.8. Feed device according to claim 7, characterized in that the motor (40) between the toothed belts (26, 27) on one side of the belt drives (20, 21) leading deflection rollers (22, 24) is arranged. 9. Vorschubeinrichtung nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, daß wenigstens die eine Trumlage des zum Querantrieb gehörenden Zahnriemens (53) mit der querbeweglichen Längsführung (14) der einen Greiferschiene (12) als übertragungselement fest verbunden ist.9. Feed device according to one of claims 1 to 8, characterized in that at least one strand of the toothed belt belonging to the transverse drive (53) with the transverse longitudinal guide (14) of a gripper rail (12) is fixedly connected as a transmission element. 10. Vorschubeinrichtung nach Anspruch 9, dadurch gekennzeichnet, daß sich der Umschlingungstrieb (50) des Querantriebs quer zur Vorschubrichtung unter den querbeweglichen Längsführungen (13, 14) der Greiferschienen (11, 12) erstreckt.10. Feed device according to claim 9, characterized in that the belt drive (50) of the transverse drive extends transversely to the feed direction under the transverse longitudinal guides (13, 14) of the gripper rails (11, 12). 11. Vorschubeinrichtung nach Anspruch 10, dadurch gekennzeichnet, daß die Drehachsen der den Zahnriemen (53) führenden Umlenkrollen sich in Vorschubrichtung erstrecken.11. Feed device according to claim 10, characterized in that the axes of rotation of the toothed belt (53) leading deflection rollers extend in the feed direction. 12. Vorschubeinrichtung nach Anspruch 11, dadurch gekennzeichnet, daß die obere Trumlage des Zahnriemens (53) mit der Längsführung (14) der einen Greiferschiene (12) fest verbunden ist, hingegen die untere Trumlage mit einem quer zur Vorschubrichtung bewegbar geführten und seinerseits mit der Längsführung (13) der anderen Greiferschiene (11) gekuppelten Schieber (60).12. Feed device according to claim 11, characterized in that the upper span of the toothed belt (53) with the longitudinal guide (14) of one Gripper rail (12) is fixedly connected, on the other hand, the lower span with a slider (60) which is movably guided transversely to the feed direction and which in turn is coupled to the longitudinal guide (13) of the other gripper rail (11). 13. Vorschubeinrichtung nach einem der Ansprüche 1 bis 12, dadurch gekennzeichnet, daß die Wirkverbindung zwischen der einen Trumlage des Zahnriemens (26, 27, 53) und dem Übertragungselement aus einem nachspannbarem Spannschloß besteht.13. Feed device according to one of claims 1 to 12, characterized in that the operative connection between the one strand of the toothed belt (26, 27, 53) and the transmission element consists of a retensionable turnbuckle. 14. Vorschubschlitten nach Anspruch 13, dadurch gekennzeichnet, daß das Spannschloß wenigstens einen in ein Gewindeloch eines Mitnehmerabschnittes des übertragungselementes eingeschraubten Gewindebolzen aufweist.14. Feed carriage according to claim 13, characterized in that the turnbuckle has at least one threaded bolt screwed into a threaded hole of a driver section of the transmission element.
EP85100418A 1984-01-19 1985-01-17 Feeding device for the step-by-step transport of material and/or work pieces, in particular in presses Expired EP0150043B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85100418T ATE33459T1 (en) 1984-01-19 1985-01-17 FEED DEVICE FOR STEP-BY-STEP MATERIAL AND/OR WORKPIECE TRANSPORT, PARTICULARLY IN PRESSES.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3401703 1984-01-19
DE19843401703 DE3401703A1 (en) 1984-01-19 1984-01-19 FEED DEVICE FOR STEP BY STEP MATERIAL AND / OR WORKPIECE TRANSPORT, IN PARTICULAR IN PRESSES

Publications (3)

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EP0150043A2 true EP0150043A2 (en) 1985-07-31
EP0150043A3 EP0150043A3 (en) 1985-12-11
EP0150043B1 EP0150043B1 (en) 1988-04-13

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Application Number Title Priority Date Filing Date
EP85100418A Expired EP0150043B1 (en) 1984-01-19 1985-01-17 Feeding device for the step-by-step transport of material and/or work pieces, in particular in presses

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US (1) US4650063A (en)
EP (1) EP0150043B1 (en)
AT (1) ATE33459T1 (en)
DE (1) DE3401703A1 (en)

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DE4309642B4 (en) * 1993-03-25 2004-03-25 Schuler Pressen Gmbh & Co. Kg Transfer device for workpiece transport
DE4310057A1 (en) * 1993-03-27 1994-09-29 Schuler Gmbh L Device for transferring workpieces through a series of work stations
CA2424071C (en) 2000-09-29 2009-01-13 Hermann Hagel Transfer device
DE102006014454B3 (en) * 2006-03-29 2007-11-08 Hoffmann, Frank Punching device with feeding device
US9125434B2 (en) 2007-10-11 2015-09-08 Philip Morris Products S.A. Smokeless tobacco product, smokeless tobacco product in the form of a sheet, extrudable tobacco composition, method for manufacturing a smokeless tobacco product, method for delivering super bioavailable nicotine contained in tobacco to a user, and packaged smokeless tobacco product sheet
CN115780646B (en) * 2023-02-06 2023-04-28 新乡市万新电气有限公司 Processing device and processing method for capacitor bottom cover

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DE945386C (en) * 1952-01-09 1956-07-05 Schuler L Ag Feed device for workpieces to be moved forward intermittently, especially on transfer presses
US3011464A (en) * 1956-03-22 1961-12-05 Danly Mach Specialties Inc Transfer feed assembly
DE1811302A1 (en) * 1967-11-29 1969-10-16 Vulcan Australia Feeding device with clamping function
FR2187448A1 (en) * 1972-06-08 1974-01-18 Aerospatiale
FR2421013A1 (en) * 1978-04-01 1979-10-26 Pressen Automation Ges Fuer FEEDING DEVICE FOR MACHINE TOOLS, ESPECIALLY PRESSES
DE3215700A1 (en) * 1982-04-27 1983-10-27 Siemens AG, 1000 Berlin und 8000 München Manipulating device, in particular for fitting, unloading and transporting workpieces
DE3320830A1 (en) * 1983-06-09 1984-12-13 Hans 4320 Hattingen Schoen Step feed for follow-on tools, in particular on punching presses

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US3746184A (en) * 1971-07-26 1973-07-17 B Wallis Safety retract mechanism
DE2206407C3 (en) * 1972-02-11 1979-11-15 Gesellschaft Fuer Pressen-Automation Mbh, 7500 Karlsruhe Feed device in presses
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Publication number Priority date Publication date Assignee Title
DE945386C (en) * 1952-01-09 1956-07-05 Schuler L Ag Feed device for workpieces to be moved forward intermittently, especially on transfer presses
US3011464A (en) * 1956-03-22 1961-12-05 Danly Mach Specialties Inc Transfer feed assembly
DE1811302A1 (en) * 1967-11-29 1969-10-16 Vulcan Australia Feeding device with clamping function
FR2187448A1 (en) * 1972-06-08 1974-01-18 Aerospatiale
FR2421013A1 (en) * 1978-04-01 1979-10-26 Pressen Automation Ges Fuer FEEDING DEVICE FOR MACHINE TOOLS, ESPECIALLY PRESSES
DE3215700A1 (en) * 1982-04-27 1983-10-27 Siemens AG, 1000 Berlin und 8000 München Manipulating device, in particular for fitting, unloading and transporting workpieces
DE3320830A1 (en) * 1983-06-09 1984-12-13 Hans 4320 Hattingen Schoen Step feed for follow-on tools, in particular on punching presses

Also Published As

Publication number Publication date
EP0150043A3 (en) 1985-12-11
EP0150043B1 (en) 1988-04-13
ATE33459T1 (en) 1988-04-15
DE3401703C2 (en) 1987-07-30
US4650063A (en) 1987-03-17
DE3401703A1 (en) 1985-08-01

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