DD291945A5

DD291945A5 - ADJUSTING DEVICE FOR FAR ADJUSTMENT OF THE GRIPPING RAILS OF A TRANSFER PRESS

Info

Publication number: DD291945A5
Application number: DD33776390A
Authority: DD
Inventors: Uwe Darr; Bernd Schmidt
Original assignee: Komb. Umformtechnik "H. Warnke" Erfurt,De
Priority date: 1990-02-21
Filing date: 1990-02-21
Publication date: 1991-07-18

Abstract

Die Erfindung bezieht sich auf eine Verstellvorrichtung zur Weiteneinstellung der fuer den Transport von Blechteilen oder aehnlichen Werkstuecken dienenden Greiferschienen einer Presse, insbesondere Transferpresse. Die Verstellvorrichtung weist quer zur Transportrichtung der Greiferschienen mittels Hebelgetriebe bewegbare Schlitten auf, in denen die Tragelemente fuer die Greiferschienen vertikalbewegbar gelagert sind und die mittels Spindel-Verstellmechanismen in ihrer Weite einstellbar sind. Erfindungsgemaesz ist jede Sindelmutter mit einem Umlenkgetriebe wirkverbunden, das einen Zapfen aufweist, auf dem die Lasche des Hebelgetriebes gelagert ist und dessen Ausgangswelle mittels zwei im Gelenkpunkt des Hebelgetriebes miteinander gekoppelter Ketten- oder Zahnriementriebe mit dem Verstellmotor verbunden ist. Fig. 1{Transferpresse; Metallbearbeitung; Blechteil; Greiferschiene; Hebelgetriebe; Weiteneinstellung; Spindel-Verstellmechanismus; Schlitten; Tragelement}The invention relates to an adjustment for width adjustment of serving for the transport of sheet metal parts or similar workpieces gripper rails of a press, in particular transfer press. The adjusting device has transversely to the transport direction of the gripper rails by means of lever mechanism movable carriage in which the support elements for the gripper rails are mounted vertically movable and adjustable by means of spindle adjustment mechanisms in their width. Erfindungsgemaesz each Sindelmutter is operatively connected to a deflection gear which has a pin on which the tab of the lever mechanism is mounted and the output shaft is connected by means of two in the hinge point of the lever gear coupled to each other chain or belt drive with the adjusting motor. Fig. 1 {transfer press; Metalworking; Sheet metal part; Gripper rail; Lever mechanism; Width adjustment; Adjusting spindle; Carriage; Supporting element}

Description

-2- 291945 Ausführungsbeispiel Die Erfindung soll nachstehend an einem Ausführungsbeispiel näher erläutert werden. Die zugehörigen Zeichnungen zeigen-2- 291945 Embodiment The invention will be explained in more detail below using an exemplary embodiment. The accompanying drawings show

Fig. 1: den Getriebekasten zur Schließ- und Hubbewegung mit der integrierten Verstellvorrichtung zur Weiteneinstellung derFig. 1: the gearbox for closing and lifting movement with the integrated adjustment for width adjustment of

Tragschienen Fig.2: den Schnitt A-A aus Fig. 1.Support rails Fig.2: the section A-A of Fig. 1st

Im rechten und linken Torraum der Seitenständer der Prosse befinden sich die Getriebekasten 1, in denen die Hebelgetriebe 2,25 zur Erzeugung der Schließ- und Hubbewegung für die Schlitten 3 und Tragelemente 4 gelagert sind. Jede Tragschiene 5, an der die nicht dargestellten Greiferschienen mit den zugehörigen Greifelementen zum Werkstücktransport befestigt sind, ist auf einem Tragelement 4 geführt gelagert.In the right and left goal area of the kickstand of the Prosse are the gear box 1, in which the lever gear 2,25 are mounted to generate the closing and lifting movement for the carriage 3 and support elements 4. Each support rail 5, to which the gripper rails, not shown, are fastened with the associated gripping elements for workpiece transport is mounted on a support element 4.

Der im Schlitten 3 quer zur Transportrichtung gelagerte Spindel-Verstellmechanismus besteht aus der drehfest angeordneten Stellspindel 6 und dem mit ihr wirkungsverbundenen Umlenkgetriebe 7, dessen erstes Kegelrad als Spindelmutter 8 ausgebildet ist. Das Umlenkgetriebe 7 enthält seitlich angeordnete Zapfen 9 zur Aufnahme der dem schließhubausführenden Hebelgetriebe zugeordneten Laschen 10. Die anderen Enden der Laschen 10 sind an den äußeren Enden des mittig gelagerten Hebels 11 angelenkt. Auf der Ausgangswelle 12 des im Umlenkgetriebe 7 gelagerten zweiten Kegelrades 13 ist eine erste Zahnriemenscheibe 14 angeordnet, die jeweils mit einem ersten ZahnriementrieU 15 mit dem im gemeinsamen Gelenkpunkt der Laschen 10 und des Hebels 11 drehbar angeordneten zweiten Zahnriemenscheibe 16 auf der Welle 17 wirkverbunden ist. Die Welle 17 enthält eine weitere Zahnriemenscheibe 18, deren zweiter Zahnriementrieb 19 mit der gestellfesten Antriebswelle 20 eines Vorstellmotors 21 verbunden ist.The mounted in the carriage 3 transversely to the transport direction spindle adjustment mechanism consists of the rotatably arranged adjusting spindle 6 and the effect associated with her deflection gear 7, the first bevel gear is formed as a spindle nut 8. The deflection gear 7 includes laterally arranged pin 9 for receiving the Schließhubausführenden lever gear associated lugs 10. The other ends of the tabs 10 are hinged to the outer ends of the centrally mounted lever 11. Arranged on the output shaft 12 of the second bevel gear 13 mounted in the deflection gear 7 is a first toothed belt pulley 14 which is operatively connected to the shaft 17 by a first toothed belt 15 with the second toothed belt pulley 16 rotatably mounted in the joint point of the lugs 10 and the lever 11. The shaft 17 includes a further toothed belt pulley 18, whose second toothed belt drive 19 is connected to the frame-fixed drive shaft 20 of an adjusting motor 21.

Während des Betriebes der Transfereinrichtung wird die Schließ-Öffnen-Bewegung mittels der Hebelgetriebe 2 über die Hebel 11 und die Laschen 10 auf die Schlitten 3 übertragen. Zwecks Verstellung des Weitenabstandes der Tragschienen 5 wird durch Betätigung der mit dem Verstellmotor 21 über die auf den Laschen 10 gelagerten Zahnriementriebe 15,19 sowie die als Spindelmuttern 8 ausgebildeten Kegelräder eine horizontale Relativbewegung der Schlitten 3 erreicht. Damit ist eine, in einer vorteilhaften Ausführungsform mittels speicherprogrammierbarer Steuerung vorwählbare stufenlos veränderbare Lage der Tragschienen 5 in Verbindung mit einem Wegmeßsystem zwecks Anpassung an d^; τ jeweiligen Werkstückabmessungen einstellbar.During operation of the transfer device, the closing-opening movement is transmitted by means of the lever mechanism 2 via the lever 11 and the tabs 10 on the carriage 3. For the purpose of adjusting the distance between the mounting rails 5, a horizontal relative movement of the carriages 3 is achieved by actuation of the toothed belt drives 15, 19 mounted on the lugs 10 with the adjusting motor 21 and the bevel gears designed as spindle nuts 8. This is a, in an advantageous embodiment by means of programmable logic preselectable continuously variable position of the support rails 5 in conjunction with a position measuring system for the purpose of adaptation to d ^; τ respective workpiece dimensions adjustable.

Zur Realisierung einer dreidimensionalen Bewegung der Transfertragschienen ist eine hebehubausführende Antriebseinheit in den Getriebekasten 1 integriert. Dazu steht jedes Tragelement 4 mit einer im Schlitten 3 gelagerten Führungssäule 22 in Wirkverbindung, in dessen unterem Bereich eine Rolle 23 angeordnet ist. Die beiden, den gegenüberliegenden Tragelementen zugeordneten Rollen 23 sind vorteilhaft in einer gemeinsamen Schiene 24 längsgeführt gelagert, an die eine hebehubausführende Antriebseinheit, vorzugsweise in Form eines Hebelgetriebes 25 angelenkt ist.In order to realize a three-dimensional movement of the transfer carrier rails, a drive-unit-carrying drive unit is integrated into the gearbox 1. For this purpose, each support element 4 is operatively connected to a guide column 22 mounted in the carriage 3, in the lower region of which a roller 23 is arranged. The two, the opposite support elements associated rollers 23 are advantageously longitudinally guided in a common rail 24, to which a hebehubausführende drive unit, preferably in the form of a lever mechanism 25 is articulated.

Claims

Adjusting device for width adjustment of the gripper rails of a transfer press, with transverse to the transport direction of the gripper rails miteis a lever slide movable carriage, in which connected via coupling gear to the drive for the lifting movement guide parts are mounted on which in turn support elements for receiving the support or gripper rails are arranged , wherein the carriages are adjustable relative to the articulation points of the lever mechanism by means of spindle adjustment mechanisms, the adjusting spindles are arranged rotationally fixed in the carriage and their spindle nuts are operatively connected to a frame fixedly arranged adjusting motor, characterized in that each spindle nut (8) with a deflection gear ( 7) is operatively connected, which has at least one pin (9) on which the tab (10) of the closing stroke exporting lever mechanism is mounted and its output shaft (12) coaxially mounted in the pin (9) and by means of two in Gelenkpu nkt of the lever mechanism with each other coupled chain or timing belt drives (15,19) with the coaxial in the central deflection point of the lever mechanism (2) mounted drive shaft (20) of the adjusting motor (21) is connected.

For this 1 page drawings

Field of application of the invention

The invention relates to an adjusting device for width adjustment of serving for the T-transport of sheet metal parts or similar workpieces gripper rails of a press, in particular transfer press, -lemä'ß the preamble of claim.

Characteristic of the known state of the art

There are adjusting and locking devices for width adjustment of the support or gripper rails of the v.g. Type with movable by means of lever gear slides for the realization of the opening and closing stroke known (DD-WP 273353, DE-OS 3634716), in which the support elements of the support rails by means of an engageable spindle adjustment adjustable in their distance from one another and by means disposed in the support member clamping device positively and non-positively lockable on a Hubtraverse, which in turn is raised and lowered stored in the carriage. A disadvantage of these devices is the high material and Steueraufwaiid for the coupling system for coupling the adjustment and the required clamping system. Furthermore, the only stepped width adjustment of the mounting rails provides no optimal adaptation to the technological process. In another known solution (EP 0188648) Tragolemente for receiving the gripper rails are horizontverschiebbbar stored in frame-fixed guides and adjusted by means of spindle adjustment mechanisms in their distance from each other, the adjusting spindles hinged with their outstanding ends directly to the pull tabs of the lever mechanism and ü ' , He an intermediate gear stage with a frame fixedly arranged adjustment are positively connected. This solution requires in addition to increased mass and manufacturing costs for the realization of the closing stroke export lever mechanism increased mass and space requirements for the gear members of the adjustment.

Object of the invention

The object of the invention is, in an adjusting device for width adjustment of the gripper rails realized by means of a lever mechanism opening and closing movement to reduce the use of materials and the production cost.

Explanation of the essence of the invention

The object of the invention is to design an adjusting device of the aforementioned type such that the costly coupling and clamping systems for the adjusting devices do not apply to the two first-mentioned known solutions, and compared to the last-mentioned solution by a suitable combination of the lever mechanism which carries out the closing stroke the gear of the adjusting the number of required gear members and the space required can be reduced.

According to the invention this is achieved in that each spindle nut is operatively connected to a reversing gear which has at least one pin on which the flap of the closing stroke exporting lever mechanism is mounted and its output shaft mounted coaxially in the pin and by means of two in Gele.ikpunkt the lever mechanism with each other coupled chain or timing belt drives with the coaxial mounted in the central deflection of the Hebelgetriabes Anti iebswclle the adjustment motor is connected.