EP0487456B1 - Method and device for advancing a band or a strip, in particular for cutting blanks - Google Patents
Method and device for advancing a band or a strip, in particular for cutting blanks Download PDFInfo
- Publication number
- EP0487456B1 EP0487456B1 EP91810894A EP91810894A EP0487456B1 EP 0487456 B1 EP0487456 B1 EP 0487456B1 EP 91810894 A EP91810894 A EP 91810894A EP 91810894 A EP91810894 A EP 91810894A EP 0487456 B1 EP0487456 B1 EP 0487456B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- band
- grippers
- movement
- advance
- longitudinal direction
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Classifications
-
- 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
- B21D43/10—Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work by grippers
- B21D43/11—Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work by grippers for feeding sheet or strip material
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T83/00—Cutting
- Y10T83/04—Processes
- Y10T83/0524—Plural cutting steps
- Y10T83/0577—Repetitive blanking
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T83/00—Cutting
- Y10T83/444—Tool engages work during dwell of intermittent workfeed
- Y10T83/463—Work-feed element contacts and moves with work
- Y10T83/4632—Comprises a work-moving gripper
Definitions
- a strip or strip is to be advanced step by step. If a row of blanks is to be cut out of a strip, the feed takes place gradually in the longitudinal direction of the strip. However, if at least two rows of blanks that are offset in the longitudinal and transverse directions are cut out for better utilization of the strip, the strip must be advanced in a zigzag or sawtooth manner.
- the feed is carried out by means of a gripper which, in the simplest case, advances the belt step by step in its longitudinal direction.
- This gripper must reverse between successive cutting operations, grasp the tape and advance the tape. So he has to double the feed path and still have to change the direction of movement.
- a combined longitudinal and transverse feed is required, which leads to structurally complex solutions which also do not allow a higher working speed.
- EP-A-0 321 602 it is known to drive two grippers which can be reciprocally moved in the feed direction from a common drive pinion via toothed racks, and to advance the belt gradually by alternately coupling with one of the grippers as it moves in the feed direction .
- the drive is carried out by a complex mechanism that does not allow very high stroke rates.
- a feed method is presented in US Pat. No. 4,610,380, in which the grippers are arranged in a carriage which can move transversely to the feed direction and is mounted in a housing. Both grippers have their own compressed air drive, which can actively move the gripper forward in the feed direction. Each gripper has a bolt which engages in a groove cut into the housing at an angle to the feed direction. A transverse movement of the carriage is thus derived from the forward movement of the gripper and, at the same time, moves the other gripper back into its starting position via the corresponding groove and bolt arrangement. In this arrangement, too, there are considerable inertial forces, since in addition to the grippers, the slide and the guides for the belt, the grippers, etc. on it have to be moved in the feed cycle. In addition, the type of total movement of the belt is fixed via the arrangement of the grooves in the housing and does not allow any adjustment.
- the aim of the present invention is to enable, with the help of alternately effective grippers, conveyance with very high number of steps with a simple structure and simple control.
- This goal is achieved according to the method according to claims 1 and 2 or the feed device according to claim 6.
- Particular embodiments of the invention are specified in the dependent claims 3-5 and 7-13.
- the movement can be diverted from the drive to the grippers by any angle up to 90 ° using sliding coupling elements or swiveling linkages.
- the conveying can take place in a straight line in the longitudinal direction of the band if only a row of blanks is cut out, or the conveying can take place in a zigzag manner by moving both grippers in a direction which is inclined to the longitudinal direction of the band or is perpendicular to the latter.
- a zigzag line 2 indicates the manner in which the belt is to be conveyed in order to punch blanks in two rows at locations offset in the longitudinal and transverse directions and thus to achieve optimal use of the material.
- This zigzag-like conveying of the belt is now achieved by means of two similar grippers 3 and 4. These grippers are designed as elongated slides, which are guided along guide rails 6 by means of U-guides 5, which are attached to the machine frame as indicated in FIGS. 2 and 3 are.
- the two grippers 3 and 4 can thus be moved along the guide rails 6 in a direction which is inclined to the longitudinal direction of the belt 1, specifically in the specific case by 60 °, such that the two oppositely inclined guide rails 6 or directions of movement of the grippers 3 and 4 also enclose an angle of 60 °.
- the two grippers each have an air cushion 7, to which compressed air can be supplied in pulses via flexible lines 8 in order to clamp a clamping rail 9 against the band 1 passing between the clamping rail 9 and the bottom 10 of the gripper for the purpose of conveyance.
- the clamping rails 9 are guided vertically movably on guide pins 11.
- the two grippers each have a slotted coupling sleeve 12, which sit on a coupling rod 13 and can slide along the same.
- the coupling rod is connected to a drive frame 14 which is driven by a drive motor 15 via a spindle 16 is movable back and forth in the axial direction of the spindle 16 in order to move the grippers 4 back and forth along the guides 6 via the coupling sleeves 12.
- the grippers 3 and 4 each have two belt guides 23.
- the mode of operation of the conveying device shown is largely apparent from the above description.
- the two grippers 3 and 4 are moved back and forth synchronously by means of the drive motor 15. With each stroke of this movement, one gripper 3 or 4 compressed air is now supplied in order to couple it by pressing the clamping rail 9 with the belt 1 and to take it along in the direction of movement of the gripper in question.
- This situation is indicated in FIG. the clamping rail of the gripper 4 is pressed pneumatically against the belt 1, so that this must follow the movement of the gripper 4. In this way, the belt is shifted alternately in the direction of movement of the gripper 3 or in the direction of movement of the gripper 4.
- the guides 23 attached to the grippers 3 and 4 always ensure that the belt is guided in a straight line in the region of the conveyor device, so that the belt is always fed to the cutting tool (not shown) in the correct position.
- the drive of the grippers 3 and 4 by means of a controlled electric motor 15 permits very simple programming of the movement sequence, i.e. the movement stroke and the movement cycle as well as the respective exact period during which the belt is fed. Another, for example pneumatic, drive is also possible.
- a second exemplary embodiment is shown schematically in FIG.
- Two grippers 17 and 18 are provided, which can be displaced along guide rails 19 and 20 in the longitudinal direction of the belt 1.
- the gripper 17 or the gripper 18 is coupled to the band in the manner described in order to advance the same by one step.
- each gripper 17 or 18 is moved in one direction for advancing the band by one step, and is moved back into the starting position during the next advancement of the band.
- a particularly high working cadence can also be achieved here, all the more since the inertial forces of the grippers 17 and 18 compensate one another.
- a straight feed according to FIG. 4 can also be used in connection with another tool, e.g. a follow-up tool.
- FIGS. 5 to 8 show possibilities for cutting out blanks in more than two rows by means of suitable control of the stroke and the effectiveness of the grippers 3 and 4 (FIG. 1).
- the individual strokes or the cyclical order of the steps in the different cutting positions are designated with letters a to f . So double steps and single steps are carried out alternately in order to reach each cutting position only once. While cutting blanks in two rows according to FIG. 1, stroke rates up to 300 / min. 5 to 8 strokes up to 200 / min are achieved when cutting out in more than two rows. because double steps have to be carried out.
- a drive unit suitable for all purposes can preferably be present, which can be detachably coupled to interchangeable feed units with grippers.
- different types of modular feed units can be installed as required, while the same drive unit can always be provided. This is particularly possible if the drive unit can work with any strokes and stroke numbers in the manner described, thanks to electronic control.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Advancing Webs (AREA)
- Punching Or Piercing (AREA)
- Winding, Rewinding, Material Storage Devices (AREA)
- Continuous Casting (AREA)
Abstract
Description
Zum Ausschneiden, insbesondere Ausstanzen von Rohlingen, insbesondere kreisrunder Scheiben zur Weiterverarbeitung zu Ziehteilen, ist ein Band oder Streifen schrittweise vorzuschieben. Ist aus einem Band eine Reihe von Rohlingen auszuschneiden, erfolgt der Vorschub schrittweise in Längsrichtung des Bandes. Werden jedoch zur besseren Ausnutzung des Bandes mindestens zwei Reihen von Rohlingen in Längs- und Querrichtung versetzten Stellen ausgeschnitten, muss das Band zickzackartig bzw. sägezahnartig vorgeschoben werden.For cutting out, in particular punching out blanks, in particular circular disks for further processing into drawn parts, a strip or strip is to be advanced step by step. If a row of blanks is to be cut out of a strip, the feed takes place gradually in the longitudinal direction of the strip. However, if at least two rows of blanks that are offset in the longitudinal and transverse directions are cut out for better utilization of the strip, the strip must be advanced in a zigzag or sawtooth manner.
Im allgemeinen erfolgt der Vorschub mittels eines Greifers, der im einfachsten Falle das Band in seiner Längsrichtung schrittweise vorschiebt. Dieser Greifer muss zwischen aufeinanderfolgenden Schnittoperationen eine Rücklaufbewegung ausführen, das Band erfassen und das Band vorschieben. Er muss also den doppelten Vorschubweg ausführen und erst noch die Bewegungsrichtung ändern. Im Falle eines zickzackartigen Bandvorschubes ist ein kombinierter Längs- und Quervorschub erforderlich, was zu kontruktiv aufwendigen Lösungen führt, die auch keine höhere Arbeitsgeschwindigkeit zulassen.In general, the feed is carried out by means of a gripper which, in the simplest case, advances the belt step by step in its longitudinal direction. This gripper must reverse between successive cutting operations, grasp the tape and advance the tape. So he has to double the feed path and still have to change the direction of movement. In the case of a zigzag-like belt feed, a combined longitudinal and transverse feed is required, which leads to structurally complex solutions which also do not allow a higher working speed.
Aus der EP-A-0 321 602 ist es zwar bekannt, zwei in Vorschubrichtung im Gegentakt hin- und herbewegbare Greifer von einem gemeinsamen Antriebsritzel her über Zahnstangen anzutreiben, und das Band durch wechselweises Kuppeln mit einem der Greifer bei dessen Bewegung in Vorschubrichtung schrittweise vorzuschieben. Abgesehen davon, dass diese Anordnung nur für einen Vorschub in Bandrichtung geeignet ist, erfolgt der Antrieb durch einen aufwendigen Mechanismus der keine sehr hohen Hubzahlen gestattet.From EP-A-0 321 602 it is known to drive two grippers which can be reciprocally moved in the feed direction from a common drive pinion via toothed racks, and to advance the belt gradually by alternately coupling with one of the grippers as it moves in the feed direction . Apart from the fact that this arrangement is only for a feed in Belt direction is suitable, the drive is carried out by a complex mechanism that does not allow very high stroke rates.
In der Patentschrift US-A-4,610,380 wird ein Vorschubverfahren vorgestellt, in dem die Greifer in einem Schlitten angeordnet sind, der sich quer zur Vorschubrichtung bewegen kann und in einem Gehäuse gelagert ist. Beide Greifer verfügen über einen eigenen Pressluftantrieb, der jeweils den Greifer aktiv vorwärts in Vorschubrichtung bewegen kann. Jeder Greifer weist dabei einen Bolzen auf, der in eine schräg zur Vorschubrichtung eingeschnittene Nut im Gehäuse eingreift. Von der Vorwärtsbewegung des Greifers wird damit eine Querbewegung des Schlittens abgeleitet, die gleichzeitig über die entsprechende Nut-Bolzenanordnung am anderen Greifer diesen wieder in seine Ausgangsposition zurückbewegt.
Auch bei dieser Anordnung treten erheblich Massenkräfte auf, da neben den Greifern auch der Schlitten und die darauf vorhandenen Führungen für das Band, die Greifer usw. im Vorschubtakt bewegt werden müssen. Ausserdem ist die Art der Gesamtbewegung des Bandes über die Anordnung der Nuten im Gehäuse fest vorgegeben und erlaubt keine Anpassung.A feed method is presented in US Pat. No. 4,610,380, in which the grippers are arranged in a carriage which can move transversely to the feed direction and is mounted in a housing. Both grippers have their own compressed air drive, which can actively move the gripper forward in the feed direction. Each gripper has a bolt which engages in a groove cut into the housing at an angle to the feed direction. A transverse movement of the carriage is thus derived from the forward movement of the gripper and, at the same time, moves the other gripper back into its starting position via the corresponding groove and bolt arrangement.
In this arrangement, too, there are considerable inertial forces, since in addition to the grippers, the slide and the guides for the belt, the grippers, etc. on it have to be moved in the feed cycle. In addition, the type of total movement of the belt is fixed via the arrangement of the grooves in the housing and does not allow any adjustment.
Ziel vorliegender Erfindung ist es, mit Hilfe wechselweise wirksamer Greifer eine Förderung mit sehr hohen Schrittzahlen bei einfachem Aufbau und einfacher Steuerung zu ermöglichen. Dieses Ziel wird gemäss dem Verfahren nach Ansprüche 1 und 2 bzw. der Vorschubvorrichtung nach Anspruch 6 erreicht. Besondere Ausführungarten der Erfindung sind in den abhängigen Patentansprüchen 3-5 und 7-13 angegeben. Die Bewegungsumlenkung vom Antrieb zu den Greifern kann um beliebige Winkel bis zu 90° mittels gleitender Kupplungsorgane oder schwenkbarer Gestänge erfolgen. Die Förderung kann dabei geradlinig in Längsrichtung des Bandes erfolgen, wenn nur eine Reihe von Rohlingen ausgeschnitten wird, oder die Förderung kann zickzackartig erfolgen, indem beide Greifer in einer Richtung bewegt werden, die zur Längsrichtung des Bandes geneigt ist oder rechtwinklig zu derselben steht. Es ergibt sich hierbei ein besonders einfacher Aufbau und eine einfache synchrone Bewegung und Steuerung mit verhältnismässig geringen bewegten Massen, und es können dabei Schnittdakenzen bis beispielsweise 300/min. erzielt werden. Wie noch gezeigt wird, sind dabei den Bewegungsabläufen kaum Grenzen gesetzt.The aim of the present invention is to enable, with the help of alternately effective grippers, conveyance with very high number of steps with a simple structure and simple control. This goal is achieved according to the method according to
Die Erfindung wird nun anhand zweier, in der Zeichnung dargestellter Ausführungsbeispiele näher erläutert.
- Fig. 1
- ist eine schematische Draufsicht auf das erste Ausführungsbeispiel,
- Fig. 2
- ist ein Schnitt nach Linie II-II in Fig. 1,
- Fig. 3
- ist ein Schnitt nach Linie III-III in Fig. 1,
- Fig. 4
- ist eine schematische Draufsicht auf das zweite Ausführungsbeispiel und die Fig. 5 bis 8 zeigen Möglichkeiten zum Ausschneiden von Rohlingen in mehr als zwei Reihen.
- Fig. 1
- is a schematic plan view of the first embodiment,
- Fig. 2
- is a section along line II-II in Fig. 1,
- Fig. 3
- is a section along line III-III in Fig. 1,
- Fig. 4
- is a schematic top view of the second Embodiment and FIGS. 5 to 8 show possibilities for cutting blanks in more than two rows.
Fig. 1 zeigt das zu fördernde Band 1, aus dem Rohlinge, beispielsweise kreisrunde Scheiben, mittels eines Schnittwerkzeugs auszuschneiden sind. In Fig. 1 ist mit einer Zickzacklinie 2 angedeutet, in welcher Weise das Band zu fördern ist, um in zwei Reihen an in Längs- und Querrichtung versetzten Stellen Rohlinge auszustanzen und damit eine optimale Nutzung des Material zu erzielen. Diese zickzackartige Förderung des Bandes wird nun erzielt mittels zweier gleichartiger Greifer 3 und 4. Diese Greifer sind als längliche Schlitten ausgebildet, welche mittels U-Führungen 5 längs Führungsschienen 6 geführt sind, welche in den Fig. 2 und 3 angedeuteter Weise auf dem Maschinengestell befestigt sind. Die beiden Greifer 3 und 4 können also längs den Führungsschienen 6 in einer Richtung bewegt werden, welche zur Längsrichtung des Bandes 1 geneigt ist und zwar im konkreten Falle um 60°, derart dass die beiden entgegengesetzt geneigten Führungschienen 6 bzw. Bewegungsrichtungen der Greifer 3 und 4 unter sich ebenfalls einen Winkel von 60° einschliessen. Die beiden Greifer weisen je ein Luftkissen 7 auf, welchem über flexible Leitungen 8 impulsweise Druckluft zugeführt werden kann, um eine Klemmschiene 9 gegen das zwischen der Klemmschiene 9 und dem Boden 10 des Greifers durchtretende Band 1 zwecks Förderung zu klemmen. Die Klemmschienen 9 sind auf Führungsbolzen 11 vertikal beweglich geführt.1 shows the
Die beiden Greifer weisen je eine geschlitzte Kupplungsbüchse 12 auf, welche auf einer Kupplungsstange 13 sitzen und längs derselben gleiten können. Die Kupplungsstange ist verbunden mit einem Antriebsrahmen 14, welcher von einem Antriebsmotor 15 über eine Spindel 16 in Achsrichtung der Spindel 16 hin und her bewegbar ist, um die Greifer 4 über die Kupplungsbüchsen 12 längs ihren Führungen 6 hin und her zu bewegen. Die Greifer 3 und 4 weisen je zwei Bandführungen 23 auf.The two grippers each have a slotted
Die Arbeitsweise der dargestellten Fördervorrichtung ergibt sich schon weitgehend aus der vorstehenden Beschreibung. Mittels des Antriebsmotors 15 werden die beiden Greifer 3 und 4 synchron hin und her bewegt. Bei jedem Hub dieser Bewegung wird nun dem einen Greifer 3 oder 4 Druckluft zugeführt, um ihn durch Anpressen der Klemmschiene 9 mit dem Band 1 zu kuppeln und dasselbe in der Bewegungsrichtung des betreffenden Greifers mitzunehmen. In Figur 3 ist diese Situation angedeutet, d.h. die Klemmschiene des Greifers 4 ist pneumatisch gegen das Band 1 gepresst, so dass dieses der Bewegung des Greifers 4 folgen muss. In dieser Weise wird das Band abwechslungsweise in der Bewegungsrichtung des Greifers 3 bzw. in der Bewegungsrichtung des Greifers 4 verschoben. Die an den Greifern 3 und 4 angebrachte Führungen 23, sorgen stets für eine Geradführung des Bandes im Bereiche der Fördervorrichtung, so dass das Band auch stets in der richtigen Position dem nicht dargestellten Schnittwerkzeug zugeführt wird. Der Antrieb der Greifer 3 und 4 mittels eines gesteuerten Elektromotors 15 gestattet eine sehr einfache Programmierung des Bewegungsablaufes, d.h. des Bewegungshubes und des Bewegungstaktes sowie des jeweiligen genauen Zeitraumes, während welchem das Band vorgeschoben wird. Es ist aber auch ein anderer, beispielsweise pneumatischer Antrieb möglich.The mode of operation of the conveying device shown is largely apparent from the above description. The two grippers 3 and 4 are moved back and forth synchronously by means of the
In Fig. 4 ist schematisch ein zweites Ausführungsbeispiel dargestellt. Es sind zwei Greifer 17 und 18 vorgesehen, welche längs Führungsschienen 19 und 20 in Längsrichtung des Bandes 1 verschiebbar sind. Sie können vom Motor 15 über die Spindel 16, eine Spindelnuss 21 und Kupplungsstangen 22 im Gegentakt hin und her bewegt werden. Während des Hubes in der gewünschten Vorschubrichtung des Bandes 1 wird der Greifer 17 oder der Greifer 18 in der beschriebenen Weise mit dem Band gekuppelt, um dasselbe um einen Schritt vorzuschieben. Auch hier gilt somit wieder, dass jeder Greifer 17 oder 18 zum Vorschieben des Bandes um einen Schritt nur in einer Richtung bewegt wird, und während des nächsten Vorschub des Bandes in die Ausgangsposition zurückbewegt wird. Es kann also hier auch eine besonders hohe Arbeitskadenz erzielt werden, umso mehr als die Massenkräfte der Greifer 17 und 18 sich gegenseitig kompensieren.A second exemplary embodiment is shown schematically in FIG. Two
Es sind auch andere Ausführungen möglich. Bei der Ausführungsform nach den Fig. 1 bis 3 ist angenommen, die Greifer 3 und 4 seien starr mit ihren Kupplungsbüchsen 12 verbunden, d.h. der Winkel, welchen die Bewegungsrichtungen der beiden Greifern einschliessen, sei nicht veränderlich. Es wäre aber auch möglich, mindestens einen der Greifer 3 oder 4 gegenüber seiner Kupplungsbüchse 12 einstellbar anzuordnen, wobei selbstverständlich auch die zugeordnete Führungsschiene 6 entsprechend verstellbar sein müsste. In diesem Falle könnte beispielsweise einer der Greifer 3 oder 4 senkrecht zur Bandlängsrichtung gestellt werden, um dem Band eine sägezahnförmige Vorschubbewegung zu erteilen.Other designs are also possible. In the embodiment according to FIGS. 1 to 3 it is assumed that the grippers 3 and 4 are rigidly connected to their
Während ein zick-zackartiger Bandvorschub praktisch nur im Zusammenhang mit einem Schnittwerkzeug zum Ausschneiden von Rohlingen von Bedeutung ist, kann ein gerader Vorschub gemäss Fig. 4 auch im Zusammenhang mit einem anderen Werkzeug, z.B. einem Folgewerkzeug, zur Anwendung kommen.While a zigzag-like tape feed is practically only important in connection with a cutting tool for cutting blanks, a straight feed according to FIG. 4 can also be used in connection with another tool, e.g. a follow-up tool.
Es ist oben erwähnt worden, dass der Antrieb der Greifer mit einem gesteuerten Motor 15 eine vielseitige Bewegungssteuerung mittels geeigneter Software ermöglicht. Es kann dabei insbesondere der Hub der Greifer frei gewählt werden. Die Figuren 5 bis 8 zeigen Möglichkeiten, mittels geeigneter Steuerung des Hubs und der Wirksamkeit der Greifer 3 und 4 (Fig. 1) in mehr als zwei Reihen Rohlinge auszuschneiden. In diesen Figuren sind die einzelnen Hübe bzw. die zyklische Reihenfolge der Schritte in die verschiedenen Schnittpositionen mit Buchstaben a bis f bezeichnet. Es werden also abwechslungsweise Doppelschritte und Einzelschritte ausgeführt, um jede Schnittposition nur einmal zu erreichen. Während beim Ausschneiden von Rohlingen in zwei Reihen gemäss Fig. 1 Hubzahlen bis zu 300/min. möglich sind, erreicht man beim Ausschneiden in mehr als zwei Reihen gemäss Fig. 5 bis 8 Hubzahlen bis zu 200/min. weil Doppelschritte auszuführen sind.It has been mentioned above that driving the grippers with a controlled
Es sind weitere Ausführungsvarianten möglich. Vorzugsweise kann eine für alle Zwecke geeignete Antriebseinheit vorhanden sein, die lösbar mit auswechselbaren Vorschubeinheiten mit Greifern gekuppelt werden kann. Es ist in diesem Falle besonders vorteilhaft, dass verschiedenartige modulare Vorschubeinheiten nach Bedarf montiert werden können, während immer dieselbe Antriebseinheit vorgesehen sein kann. Das ist besonders dann möglich, wenn die Antriebseinheit in der beschriebenen Weise dank elektronischer Steuerung mit beliebigen Hüben und Hubzahlen arbeiten kann.Further design variants are possible. A drive unit suitable for all purposes can preferably be present, which can be detachably coupled to interchangeable feed units with grippers. In this case, it is particularly advantageous that different types of modular feed units can be installed as required, while the same drive unit can always be provided. This is particularly possible if the drive unit can work with any strokes and stroke numbers in the manner described, thanks to electronic control.
Es sind den Bewegungsabläufen kaum Grenzen gesetzt. So kann z.B. auch ein gerader Vorschub durch je zwei geneigte Zick-Zack-Schritte erfolgen.There are hardly any limits to the movements. For example, straight feed through two inclined zigzag steps.
Claims (13)
- A method for the advance of a band or a strip (1), more particularly for cutting blanks, where at least two synchronously reciprocating grippers (3, 4; 17, 18) advance said band alternatingly and are only coupled to said band (1) during the stroke in one respective direction in order to advance it, in such a manner that in each stroke an advance of said band (1) is effected which is a zigzag movement (2), said zigzag movement resulting from a superposition of a rectilinear, non-reciprocating feeding motion in the longitudinal direction of said band and a reciprocating motion which is perpendicular thereto, characterised in that a common drive (13, 14, 15; 15, 16, 21) of said grippers (3, 4; 17, 18) performs a driving motion which is perpendicular to the advancing movement and which is converted into gripper movements, the directions of said gripper movements being inclined with respect to the direction of said driving motion, or one of the directions of said gripper movements being inclined with respect to said driving motion and another one of the directions of said gripper movements being perpendicular to the longitudinal direction of said band (1).
- A method for the advance of a band or a strip (1), more particularly for cutting blanks, where at least two synchronously reciprocating grippers (3, 4; 17, 18) advance said band alternatingly and are only coupled to said band (1) during the stroke in one respective direction in order to advance it, in such a manner that in each stroke an advance of said band (1) is effected which is a longitudinal feeding movement, characterised in that a common drive (13, 14, 15; 15, 16, 21) of said grippers (3, 4; 17, 18) performs a driving motion which is perpendicular to said feeding movement and which is converted into gripper movements, the directions of said gripper movements being perpendicular to the direction of said driving movement.
- Method according to claim 2, characterised in that said band (1) is displaced in its longitudinal direction in a stepwise manner by two grippers (17, 18) performing a push-pull movement in the longitudinal direction of said band (1).
- Method according to claim 1, characterised in that said band (1) is displaced in a zigzag or sawtooth manner by means of grippers (3, 4) which are moved at different angles with respect to the longitudinal direction of said band.
- Method according to claim 4, characterised in that said band (1) is advanced at different stroke lengths in order to punch out blanks in more than two rows.
- Feeding device for implementing the method according to claim 1 or 2, comprising at least two synchronously reciprocating grippers (3, 4; 17, 18) which are capable of being alternatingly coupled to said band (1) or strip, characterised by a common, reciprocating driving member (14, 21) of said grippers which is coupled to said grippers (3, 4; 17, 18), said grippers being guided in directions which form an angle whose value is greater than 0° and smaller or equal to 90° with respect to the direction of the driving motion, said reciprocating movement of said driving member being perpendicular to the longitudinal direction of said band.
- Device according to claim 6, characterised by an electric drive (12 - 12; 21) for the movement of said grippers (3, 4; 17, 18).
- Device according to claim 6 or 7, characterised by two grippers (17, 18) which are movable in the longitudinal direction of said band (1) in opposite directions.
- Device according to claim 6 or 7, characterised in that grippers (3, 4) are provided which are movable in directions that include an angle.
- Device according to claim 9, characterised in that said angle is adjustable.
- Device according to any one of claims 6 to 10, characterised in that said grippers (3, 4) have guidings (23) for said band (1).
- Device according to any one of claims 6 to 11, characterised in that a driving element (15, 16) is detachably connected to said driving member (13, 14; 21).
- Device according to any one of claims 6 to 12, characterised in that said driving member (14, 21) is coupled to said grippers (3, 4 or 17, 18) by means of sliding coupling elements (12) or by pivotable rods (22).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH3709/90 | 1990-11-23 | ||
| CH370990 | 1990-11-23 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0487456A1 EP0487456A1 (en) | 1992-05-27 |
| EP0487456B1 true EP0487456B1 (en) | 1994-11-17 |
Family
ID=4261834
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP91810894A Expired - Lifetime EP0487456B1 (en) | 1990-11-23 | 1991-11-18 | Method and device for advancing a band or a strip, in particular for cutting blanks |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US5445305A (en) |
| EP (1) | EP0487456B1 (en) |
| JP (1) | JP3207473B2 (en) |
| AT (1) | ATE114123T1 (en) |
| DE (1) | DE59103540D1 (en) |
| DK (1) | DK0487456T3 (en) |
| ES (1) | ES2064069T3 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT1266010B1 (en) * | 1993-12-30 | 1996-12-16 | Dalcos Srl | CLAMP FEEDER FOR SHEET METAL TAPES |
| US8118197B2 (en) * | 2007-06-18 | 2012-02-21 | Precision Valve Corporation | Method of making aerosol valve mounting cups and resultant cups |
| CN102335698B (en) * | 2011-10-17 | 2015-08-12 | 机械科学研究总院先进制造技术研究中心 | A kind of high-temperature steel plate grabbing mechanical hand with heat insulation function |
| CN102430663B (en) * | 2011-10-17 | 2015-01-21 | 机械科学研究总院先进制造技术研究中心 | Flexible adjustable manipulator for catching high-temperature steel plate |
| CN103170984B (en) * | 2013-04-01 | 2015-10-07 | 长沙长泰机器人有限公司 | Adapt to robot flexibility gripping apparatus and the process for stamping thereof of the punching press of many specifications hot plate |
| JP2023517042A (en) * | 2020-03-06 | 2023-04-21 | フレキシブル・スチール・レーシング・カンパニー | Cutting device and belt cutting method |
Family Cites Families (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2126455A (en) * | 1936-07-22 | 1938-08-09 | Du Pont | Process for the preparation of copper halides |
| US2126453A (en) * | 1936-09-14 | 1938-08-09 | William W Criley | Apparatus for forming blanks from hot rolled wire stock |
| GB1045699A (en) * | 1964-06-08 | 1966-10-19 | J P Udal Ltd | Feed means for strip material |
| US3665794A (en) * | 1970-03-23 | 1972-05-30 | Littell Machine Co F J | Apparatus for positioning scroll shaped metal strips |
| US3583268A (en) * | 1970-05-15 | 1971-06-08 | Albert W Scribner | High speed stock feeder |
| US3847320A (en) * | 1971-01-14 | 1974-11-12 | A Scribner | Stock feeder |
| FR2158074A1 (en) * | 1971-10-26 | 1973-06-15 | Royer Jean | Cutting discs from moving strip - using a single punch and minimising wastage of strip material |
| US3791567A (en) * | 1971-12-17 | 1974-02-12 | Gloucester Eng Co Inc | Web gripping, advancing apparatus |
| DE2336534B2 (en) * | 1973-07-18 | 1975-07-24 | Iwk-Pressen Gmbh, 3503 Lohfelden | Zigzag cutting device |
| DE2534914C3 (en) * | 1975-08-05 | 1978-05-24 | Siemens Ag, 1000 Berlin Und 8000 Muenchen | Cycle feed device for feeding tape or strip-shaped material |
| US4051987A (en) * | 1976-04-22 | 1977-10-04 | Scribner Albert W | High speed stock feeder for punch presses and the like |
| US4160518A (en) * | 1978-02-06 | 1979-07-10 | Scribner Albert W | Double stroke feeder |
| CH643478A5 (en) * | 1980-04-14 | 1984-06-15 | Erwin Jenkner | Trimming FOR PLATTENFOERMIGE WORKPIECES WITH ABOUT RELATED SKINS. |
| US4610380A (en) * | 1984-10-26 | 1986-09-09 | Pressmate, Inc. | Stagger feeder |
| DE3775407D1 (en) * | 1987-12-23 | 1992-01-30 | Leinhaas Industrieberatung | PLIERS FEEDER WITH PNEUMATIC OR HYDRAULICALLY DRIVEN CRANKS. |
-
1991
- 1991-11-18 DE DE59103540T patent/DE59103540D1/en not_active Expired - Lifetime
- 1991-11-18 ES ES91810894T patent/ES2064069T3/en not_active Expired - Lifetime
- 1991-11-18 DK DK91810894.5T patent/DK0487456T3/en active
- 1991-11-18 EP EP91810894A patent/EP0487456B1/en not_active Expired - Lifetime
- 1991-11-18 AT AT91810894T patent/ATE114123T1/en not_active IP Right Cessation
- 1991-11-25 JP JP30925691A patent/JP3207473B2/en not_active Expired - Fee Related
-
1994
- 1994-01-13 US US08/181,880 patent/US5445305A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| DE59103540D1 (en) | 1994-12-22 |
| ATE114123T1 (en) | 1994-12-15 |
| JPH04266435A (en) | 1992-09-22 |
| US5445305A (en) | 1995-08-29 |
| ES2064069T3 (en) | 1995-01-16 |
| JP3207473B2 (en) | 2001-09-10 |
| DK0487456T3 (en) | 1995-01-30 |
| EP0487456A1 (en) | 1992-05-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE2839978C2 (en) | ||
| AT390597B (en) | DEVICE FOR POSITIONING OR LOCKING WORKPIECES | |
| DE69406545T2 (en) | MECHANICAL HAND FOR TRANSPORTING PANELS, IN PARTICULAR METAL PANELS RELATIVE TO A MACHINE TOOL LIKE ANY BENDING PRESS | |
| DE1460125B2 (en) | Device for cutting textiles | |
| DE3020292A1 (en) | MACHINE FOR SCRAPING PANELS, ESPECIALLY FOR PRINTED CIRCUITS | |
| EP0487456B1 (en) | Method and device for advancing a band or a strip, in particular for cutting blanks | |
| EP1336440A1 (en) | Driver device for workpieces with transfer bars | |
| DE69406018T2 (en) | PLIERS FEEDER FOR METAL STRIPS | |
| AT402032B (en) | MACHINE FOR THE PROCESSING OF GRID MATS FROM LENGTHED AND CROSSWIRE WELDED TOGETHER | |
| DE3642589A1 (en) | PRODUCTION SYSTEM WITH A STEP-BY-STEP DRIVING DEVICE | |
| DE2704415A1 (en) | Multispindle drill for flat wooden components - has positioning stops on each side of transverse plane through drill spindle axis | |
| DE10331338B4 (en) | Automatic positioning system | |
| DE4425231B4 (en) | Method and device for profiling bristle fields | |
| DE10059312C2 (en) | Centering device for conveyed goods | |
| DE2914278A1 (en) | BRUSH PRODUCTION MACHINE | |
| DE2525616A1 (en) | DEVICE FOR ADJUSTING THE LATERAL DISTANCE BETWEEN A FEEDER RAIL PAIR OF A FEEDING DEVICE | |
| DE2654365C2 (en) | Method for tamping brushes and tamping tool for carrying out the method | |
| DE3147422C2 (en) | Woodworking machine for tenoning and longitudinal profiling of window timbers | |
| EP0150043B1 (en) | Feeding device for the step-by-step transport of material and/or work pieces, in particular in presses | |
| DE10162862B4 (en) | Device for fixing workpieces | |
| EP0308857A2 (en) | Punching device | |
| EP1344858A2 (en) | Sewing machine | |
| EP0630702B1 (en) | Method for feeding and advancing a strip and feeding apparatus for carrying out the method | |
| EP0026285A1 (en) | Transfer table | |
| DE3914008A1 (en) | Machine for manufacturing workpieces of any geometry - has unit-carrier carrying several processing units which can be moved relative to fixed workpiece in three axis |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE CH DE DK ES FR GB IT LI NL SE |
|
| 17P | Request for examination filed |
Effective date: 19920525 |
|
| 17Q | First examination report despatched |
Effective date: 19921127 |
|
| GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
| ITF | It: translation for a ep patent filed |
Owner name: BARZANO' E ZANARDO MILANO S.P.A. |
|
| AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): AT BE CH DE DK ES FR GB IT LI NL SE |
|
| REF | Corresponds to: |
Ref document number: 114123 Country of ref document: AT Date of ref document: 19941215 Kind code of ref document: T |
|
| GBT | Gb: translation of ep patent filed (gb section 77(6)(a)/1977) |
Effective date: 19941117 |
|
| REF | Corresponds to: |
Ref document number: 59103540 Country of ref document: DE Date of ref document: 19941222 |
|
| REG | Reference to a national code |
Ref country code: ES Ref legal event code: FG2A Ref document number: 2064069 Country of ref document: ES Kind code of ref document: T3 |
|
| REG | Reference to a national code |
Ref country code: DK Ref legal event code: T3 |
|
| EAL | Se: european patent in force in sweden |
Ref document number: 91810894.5 |
|
| ET | Fr: translation filed | ||
| PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
| 26N | No opposition filed | ||
| REG | Reference to a national code |
Ref country code: GB Ref legal event code: IF02 |
|
| REG | Reference to a national code |
Ref country code: CH Ref legal event code: NV Representative=s name: ISLER & PEDRAZZINI AG Ref country code: CH Ref legal event code: PUE Owner name: STYNER & BIENZ AG TRANSFER- ADVAL TECH HOLDING AG |
|
| REG | Reference to a national code |
Ref country code: GB Ref legal event code: 732E |
|
| NLS | Nl: assignments of ep-patents |
Owner name: ADVAL TECH HOLDING AG |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: CH Payment date: 20030918 Year of fee payment: 13 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: AT Payment date: 20031009 Year of fee payment: 13 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 20031013 Year of fee payment: 13 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DK Payment date: 20031014 Year of fee payment: 13 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: NL Payment date: 20031016 Year of fee payment: 13 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: SE Payment date: 20031022 Year of fee payment: 13 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: ES Payment date: 20031107 Year of fee payment: 13 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: BE Payment date: 20031120 Year of fee payment: 13 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: AT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20041118 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20041119 Ref country code: ES Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20041119 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: CH Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20041130 Ref country code: BE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20041130 Ref country code: DK Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20041130 Ref country code: LI Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20041130 |
|
| BERE | Be: lapsed |
Owner name: *ADVAL TECH HOLDING A.G. Effective date: 20041130 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: NL Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20050601 |
|
| REG | Reference to a national code |
Ref country code: DK Ref legal event code: EBP |
|
| EUG | Se: european patent has lapsed | ||
| REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20050729 |
|
| NLV4 | Nl: lapsed or anulled due to non-payment of the annual fee |
Effective date: 20050601 |
|
| REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST |
|
| REG | Reference to a national code |
Ref country code: ES Ref legal event code: FD2A Effective date: 20041119 |
|
| BERE | Be: lapsed |
Owner name: *ADVAL TECH HOLDING A.G. Effective date: 20041130 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20101119 Year of fee payment: 20 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 20101118 Year of fee payment: 20 Ref country code: IT Payment date: 20101126 Year of fee payment: 20 |
|
| REG | Reference to a national code |
Ref country code: DE Ref legal event code: R071 Ref document number: 59103540 Country of ref document: DE |
|
| REG | Reference to a national code |
Ref country code: DE Ref legal event code: R071 Ref document number: 59103540 Country of ref document: DE |
|
| REG | Reference to a national code |
Ref country code: GB Ref legal event code: PE20 Expiry date: 20111117 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION Effective date: 20111117 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION Effective date: 20111119 |