EP1919641B1 - Stamping apparatus with feed device - Google Patents

Stamping apparatus with feed device Download PDF

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Publication number
EP1919641B1
EP1919641B1 EP07727217A EP07727217A EP1919641B1 EP 1919641 B1 EP1919641 B1 EP 1919641B1 EP 07727217 A EP07727217 A EP 07727217A EP 07727217 A EP07727217 A EP 07727217A EP 1919641 B1 EP1919641 B1 EP 1919641B1
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EP
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Prior art keywords
metal sheet
feed
conveying device
roller pair
carriage
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EP07727217A
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German (de)
French (fr)
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EP1919641A1 (en
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Frank Hoffmann
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Priority to SI200730022T priority Critical patent/SI1919641T1/en
Priority to PL07727217T priority patent/PL1919641T3/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
    • B21D43/08—Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work by rollers
    • B21D43/09—Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work by rollers by one or more pairs of rollers for feeding sheet or strip material
    • 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
    • B21D28/00—Shaping by press-cutting; Perforating
    • B21D28/24—Perforating, i.e. punching holes
    • B21D28/26—Perforating, i.e. punching holes in sheets or flat parts
    • B21D28/265—Perforating, i.e. punching holes in sheets or flat parts with relative movement of sheet and tools enabling the punching of holes in predetermined locations of the sheet, e.g. holes punching with template
    • 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
    • B21D51/00—Making hollow objects
    • B21D51/16—Making hollow objects characterised by the use of the objects
    • B21D51/38—Making inlet or outlet arrangements of cans, tins, baths, bottles, or other vessels; Making can ends; Making closures
    • B21D51/44—Making closures, e.g. caps

Definitions

  • the invention relates to a device for punching of can lids or the like., With a supported on a frame, continuously repetitive vertically operated punching tools bearing bridge with a progressively transported under these metal sheets with open tools longitudinal conveyor and with a longitudinally moving or moving metal sheet limited laterally offset cross conveyor and a method for their control.
  • Such a device is known from DE 296 23 908 U1 known.
  • This device is used for extensive use of a sheet metal plate by their longitudinal and / or transverse transport in grid distributed positions, in each of which carries at least one fixed, continuously up and down punching a punching operation.
  • the promotion of the metal sheet takes place by gripping a metal sheet trailing edge with grippers, which are mounted on a cross slide, which is moved on a longitudinal slide controlled in the feed and Aus detailcardi.
  • a second gripper-Kreuzschlitten- and longitudinal slide assembly which is offset in height relative to the first, takes over alternately with the first feed closely following to be processed sheet metal plates, so that the punch performs no idle strokes when changing plates.
  • the respectively after releasing the completely blank punched metal sheet free conveyor assembly runs back during the advancement of the other in the deduction position.
  • the conveying accuracy makes it possible to perform the punching in straight or preferably obliquely running rows with millimeter-sized intervals and correspondingly accurate to the edge, so that extremely low waste remains.
  • the metal sheets are often so thin that they have punched empty only a very low stability.
  • the known device has a large depth, since it must accommodate at least two metal plates in the direction of passage.
  • a punching device with a double-row tool known in which in two mutually staggered rows punching tools are arranged and having a conveyor belt transporter for metal sheets, being provided in the transport direction at the front and rear edges of the panels driver and another feed device with laterally engaging Pliers each advances a straight to be punched metal sheet.
  • the very elaborate full equipment which also requires a very stable support bridge to accommodate the punching forces, eliminating a cross-promotion of the metal sheets.
  • a punching device which comprises two longitudinal transverse conveyor with grippers, each attacking with two pliers on one of the metal sheet sides.
  • the longitudinal conveyors extend beyond the length of a metal sheet beyond the punching station and thus serve also the removal of the grid-like empty punched metal sheet.
  • the longitudinal conveyor extend over at least three lengths of sheet metal.
  • the two drive rollers are each movable on a transverse carriage conveyor, so that a respectively clamped between at least one roller pair of sheet metal of this in the conveying direction and with the carriage conveyor is transversely positionable, so that only one or more punching tools all punching positions are controlled, as it requires a complete blank punching.
  • Both the rollers and the cross conveyors are controlled accordingly with exactly positioning motors.
  • each carriage is connected by a spindle drive to a drive motor mounted stationarily on a base frame, but other linear positioning systems can also be provided.
  • roller drive motor is advantageously mounted fixed to the frame and connected via a drive shaft with a coupling element displaceable thereon to the roller.
  • the conveyor roller pairs each have a variable pitch roller so that the rollers in the one adjustment have a wide gap through which a punching plate is freely displaceable, and are compressed in the other setting so that an intermediate plate is exactly taken when the driven roller turns.
  • the storage of the adjustable pressure roller is held, for example, in bolt-bushing guides or in pivoting levers on the carriage.
  • a pneumatic cylinder and a counter-spring provide the force for opening and closing the rollers at both end-side bearings.
  • each pair of rollers hold-down rails are arranged on the carriage, which are preferably raised or pushed electromagnetically against a counter-spring.
  • the exact alignment of a sheet metal edge to the conveying directions perpendicular thereto is monitored by position sensors which operate optically, electromagnetically or mechanically.
  • the sensor signals serve a control device for a corrective control of the conveyor motors and the pressure means and hold-down.
  • the conveyor rollers Since the conveyor rollers have a certain elasticity, their conveying diameter changes depending on the pressing force, so that a roller pressed only on one side exerts a torque on the sheet, which leads to its orientation when the other pair of rollers is controlled open or not penetrated by the metal sheet is and the hold-downs are accordingly opened or suitably closed only on one side.
  • a particularly effective angular position correction of a metal sheet takes place when the two pairs of rolls are each pressed on one side at their opposite ends and driven synchronously or with differing speed or direction, or the slides are easily moved against each other.
  • the position sensors or position sensors are advantageously arranged on the carriage and / or outlet side of the rollers. Preferably, they are arranged in alignment with one another in both conveying directions, so that all edges are measured for their position and the angle correction can be regulated by means of the angular difference.
  • the metal sheets are positioned to each other when inserting a new board so that they connect edge to edge in a row and the punching can be performed without a punching blanket to each other.
  • the transfer of a new metal sheet takes place directly in the first pair of rollers, whereupon they are gripped and transported on.
  • the blank punched sheet is accelerated by the second pair of rollers fed directly via a sliding or rolling table a downstream stack tray, so that no additional area is consumed and eliminates an extractor.
  • the metal sheet is introduced by conveyor belts or the like.
  • the feed rollers with the nip open with a series of fixed edge stops align the metal sheet by these from laterally displaceable attacks, the force acting on the opposite edge, against the fixed Stops pushed and pressed.
  • the stops are advantageously equipped with free-running hollow-edged rollers, so that the conveying movement is opposed by the conveyor belts virtually no resistance.
  • Such a aligned metal sheet is taken after their entry into the nip of these after closing and transported without delay, so that a further alignment control is generally unnecessary.
  • Section A - A shows schematically, retractable, by each side swung by a pneumatic, electric or the like.
  • Controllable drive which is shown schematically.
  • the feed drives on the belt bearings are retractable by controls.
  • Fig. 1 schematically shows on two sides of a base frame 13, 14, on the two.
  • Cross conveyors 20, 40 with their positioning drive motors 23, 43 and with roller drive motors 34, 54 are mounted.
  • Between the base frame 13, 14 extends only a rudimentary illustrated bridge 10, which carries a pressing and punching tool 1, to the coaxially below in the frame a die 1 A is arranged.
  • the two transverse conveyor devices 20, 40 each consist of a slide guide 21, 41, which extends over at least two maximum plate widths B.
  • slide guides 21, 41 is a respective slide 22, 42 mounted transversely displaceable, which is connected to a linear drive, which here is for example a spindle drive, the drive motor 23, 43 drives a spindle not visible here, the longitudinally in the carriage guide assembly and by the carriage 22, 42 extends, in which a spindle nut is mounted.
  • a linear drive which here is for example a spindle drive
  • the drive motor 23, 43 drives a spindle not visible here, the longitudinally in the carriage guide assembly and by the carriage 22, 42 extends, in which a spindle nut is mounted.
  • the carriage 22 To detect the parallel alignment of the edges K of the metal sheets 11, 12 in the conveyor serve to the carriage 22, 42 arranged position sensors S1 - S8.
  • the inlet of the leading edge K1 and the outlet of the trailing edge K2 as well as the parallel position of the edges K1, K2 are to be detected by measurement with the precisely aligned sensors S1-S8 arranged close to the roller bearings.
  • Optical, electromagnetic and mechanical samplers are suitable.
  • the signals from the sensors S1-S8 are fed to a control processor containing an operating program by which the drive motors 23, 34; 43, 54, the pneumatic valves 27A, 28A; 47A, 48A and here not recognizable electromagnetic hold-down 35, 36, 37; 55, 56, 57 are controlled.
  • the pneumatic valves connect the pneumatic actuators of the roller bearings either with a compressed air generator PL or a vent line.
  • Fig. 2 shows in cross section, the two longitudinal conveyor, wherein the punching tool 1, 1A is recessed.
  • the carriage guide 21, 41 is arranged, in which the carriage 22, 42 is slidably mounted in the image depth.
  • a pair of conveyor rollers is mounted, under which a spindle nut 24A, 44A on a spindle 24, 44 runs.
  • the lower roller 32, 52 is mounted on a drive shaft 33, 53 displaceable and rotationally fixed.
  • the pressure roller 31,51 is mounted raised and lowered, including its bearing blocks 38, 39; 58, 59 in columns 25, 26; 45, 46 have vertical guides which are fixed on the carriage 22, 42.
  • the bearing blocks are each symmetrical by pneumatic cylinder 27, 28; 47, 48 acted upon in the pressing direction and by springs not shown in the lifting direction.
  • pneumatic cylinder 27, 28; 47, 48 acted upon in the pressing direction and by springs not shown in the lifting direction.
  • a double-acting two-way pneumatic or a reversal of the spring action direction and pneumatic acting direction is alternatively provided.
  • inlet side and outlet side of the roller pairs are on the carriage 22, 42 hold-downs 36, 35; 55, 56, each by an electromagnet 36A, 35A; 55A, 56A is pressed or raised against the force of a spring, not shown, in a hold-down position.
  • the individual controllability of the magnets 35A, 36A; 55A, 56A makes it possible to hold a metal sheet 12 when punching the last row of holes on both sides of the tool and at the same time with the input side hold-down 36 and pressed feed side roller 31 a new sheet 11 to move into a metal sheet subsequent to sheet metal position, such Fig. 1 shows.
  • the two down holders 35, 55 are closed next to the punching tool and the outlet-side downholder 56 is opened, so that the empty punched grid-like metal sheet 12 can be ejected at an increased feed rate.
  • it runs over a slide table, rolling table or the like.
  • Also on the supply side is an in Fig. 3 illustrated slide table provided which allows the all-round displacement of the metal sheet.
  • Schematically additional back-up 37, 57 are shown inlet and outlet side, which are controllable and serve to calm the metal sheet after rapid feed movements and during punching.
  • Fig. 3 shows a feed table 60 in front of a longitudinal conveyor 30 with inserted in open rolls 31, 32 sheet metal plate 11, the leading edge K1 is close to the edge sensor 75, which controls the closing of the feed rollers 31, 32.
  • the roll feed After alignment and advancement with the tape feed 61, 62 for detection by the edge sensor 75, the roll feed enters into action and the feed table 60 is released for transverse and longitudinal conveying by lowering the alignment means and the belt conveyors.
  • FIGS. 4 and 5 show a cross section A - A of the feed table 60 with an inserted metal sheet 11, wherein Fig. 4 illustrates the state of alignment with the right edge KR in the image being slid against a roller-studed stop 70 by each of the aligning rollers 71 pressing with a force on the opposite edge KL to determine the lateral position.
  • the conveyor belts 61, 62 are lowered by the lifting devices 63, 64.
  • Fig. 5 shows the retraction position, in which the conveyor belts are lowered at their pulleys with the lifting devices 63, 64 and the centering rollers 71, 70 are laterally pivoted by pivoting devices 73, 72, so that a free displacement in the feeder and transversely thereto during the individual conveyor and punching steps is given.
  • the pressure and stop rollers 70, 71 are provided with concave profiles, so that the metal sheet edges KL, KR take a precise position when the pivot drive 72 of the stop roller 70 has taken the position on the stop 74.

Landscapes

  • Mechanical Engineering (AREA)
  • Engineering & Computer Science (AREA)
  • Delivering By Means Of Belts And Rollers (AREA)
  • Press Drives And Press Lines (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Advancing Webs (AREA)
  • Registering Or Overturning Sheets (AREA)
  • Details Of Cutting Devices (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Control Of Conveyors (AREA)
  • Attitude Control For Articles On Conveyors (AREA)
  • Sheets, Magazines, And Separation Thereof (AREA)
  • Separation, Sorting, Adjustment, Or Bending Of Sheets To Be Conveyed (AREA)
  • Punching Or Piercing (AREA)

Abstract

The invention describes an apparatus for stamping can lids or the like, having a bridge (10) supported on a frame and carrying stamping tools (1) actuated vertically in a continuously repeating manner, having a longitudinal conveying device (30) gradually transporting metal sheets (11, 12) under said tools (1) in each case with the latter opened, and having a transverse conveying device (20, 40) laterally displacing to a limited extent the metal sheet (11, 12) moving or moved longitudinally in each case, wherein a separately controllable transverse conveying device (20, 40) is arranged in a stationary position in each case on the feed and discharge side approximately symmetrically to the tools (1) close in front of and behind the latter, said transverse conveying device (20, 40) in each case carrying a driving roller pair (31, 32; 51, 52) as the longitudinal conveying device (30, 50), which delivers the metal sheet (11, 12) in a controlled clamping manner or releases it in a controlled manner. Furthermore, a method of using the apparatus described is presented.

Description

Die Erfindung betrifft eine Vorrichtung zum Stanzpressen von Dosendeckeln oder dgl., mit einer auf einem Gestell getragenen, kontinuierlich repetierend vertikal betätigten Stanzpresswerkzeuge tragenden Brücke mit einer unter diesen Blechtafeln jeweils bei geöffneten Werkzeugen schrittweise hindurchtransportierenden Längsfördervorrichtung und mit einer die sich jeweils längs bewegende oder bewegte Blechtafel beschränkt seitlich versetzende Querfördervorrichtung sowie ein Verfahren zu deren Steuerung.The invention relates to a device for punching of can lids or the like., With a supported on a frame, continuously repetitive vertically operated punching tools bearing bridge with a progressively transported under these metal sheets with open tools longitudinal conveyor and with a longitudinally moving or moving metal sheet limited laterally offset cross conveyor and a method for their control.

Eine derartige Vorrichtung ist aus der DE 296 23 908 U1 bekannt. Diese Vorrichtung dient zur flächenmäßig weitgehenden Ausnutzung einer Blechtafel durch deren Längs- und/oder Quertransport in rastermäßig verteilte Positionen, in denen jeweils mindestens ein feststehendes, kontinuierlich auf- und abbewegtes Stanzwerkzeug einen Stanzvorgang durchführt. Die Förderung der Blechtafel erfolgt durch Ergreifen einer Blechtafelhinterkante mit Greifzangen, die an einem Kreuzschlitten angebracht sind, der auf einem Längsschlitten in der Einzugs- und Ausförderrichtung gesteuert verfahrbar ist. Eine zweite Greifzangen-Kreuzschlitten- und Längsschlittenanordnung, die höhenmäßig gegenüber der ersten versetzt ist, übernimmt wechselweise mit der ersten den Vorschub dicht aufeinander folgend zu bearbeitender Blechplatten, so dass die Stanze beim Plattenwechsel keine Leerhübe ausführt. Die jeweils nach dem Loslassen der komplett leer gestanzten Blechtafel freie Förderanordnung läuft während des Vorschubes der anderen in die Abzugsstellung zurück. Die Fördergenauigkeit gestattet es, die Stanzungen in geraden oder vorzugsweise schräg laufenden Reihen mit Millimeter großen Abständen und entsprechend randgenau auszuführen, so dass äußerst geringer Verschnitt verbleibt. Die Blechtafeln sind häufig so dünn, dass sie leer gestanzt nur eine sehr geringe Stabilität aufweisen. Die bekannte Vorrichtung weist eine große Bautiefe auf, da sie in der Durchlaufrichtung mindestens zwei Blechplatten aufnehmen muss.Such a device is known from DE 296 23 908 U1 known. This device is used for extensive use of a sheet metal plate by their longitudinal and / or transverse transport in grid distributed positions, in each of which carries at least one fixed, continuously up and down punching a punching operation. The promotion of the metal sheet takes place by gripping a metal sheet trailing edge with grippers, which are mounted on a cross slide, which is moved on a longitudinal slide controlled in the feed and Ausförderrichtung. A second gripper-Kreuzschlitten- and longitudinal slide assembly, which is offset in height relative to the first, takes over alternately with the first feed closely following to be processed sheet metal plates, so that the punch performs no idle strokes when changing plates. The respectively after releasing the completely blank punched metal sheet free conveyor assembly runs back during the advancement of the other in the deduction position. The conveying accuracy makes it possible to perform the punching in straight or preferably obliquely running rows with millimeter-sized intervals and correspondingly accurate to the edge, so that extremely low waste remains. The metal sheets are often so thin that they have punched empty only a very low stability. The known device has a large depth, since it must accommodate at least two metal plates in the direction of passage.

Weiterhin ist aus der EP 0 616 861 B2 eine Stanzvorrichtung mit einem doppelreihigen Werkzeug bekannt, bei dem in zwei zueinander versetzt bestückten Reihen Stanzwerkzeuge angeordnet sind und die einen Förderbandtransporteur für Blechtafeln aufweist, wobei in der Transportrichtung an der Vorder- und der Hinterkante der Tafeln Mitnehmer vorgesehen sind und eine weitere Vorschubeinrichtung mit seitlich angreifenden Zangen jeweils eine gerade zu stanzende Blechtafel vorschiebt. Die sehr aufwendige Vollbestückung, die zudem eine sehr stabile Tragbrücke erfordert, um die Stanzkräfte aufzunehmen, erübrigt eine Querförderung der Blechtafeln.Furthermore, from the EP 0 616 861 B2 a punching device with a double-row tool known in which in two mutually staggered rows punching tools are arranged and having a conveyor belt transporter for metal sheets, being provided in the transport direction at the front and rear edges of the panels driver and another feed device with laterally engaging Pliers each advances a straight to be punched metal sheet. The very elaborate full equipment, which also requires a very stable support bridge to accommodate the punching forces, eliminating a cross-promotion of the metal sheets.

Weiterhin ist aus der DE 34 37 642 C2 eine Stanzvorrichtung bekannt, die zwei Längs-Querförderer mit Greifzangen umfasst, die jeweils mit zwei Zangen an einer der Blechtafelseiten angreifen. Die Längsförderer reichen um die Länge einer Blechtafel über die Stanzstation hinaus und dienen somit auch der Abförderung der gitterartig leer gestanzten Blechtafel. Somit erstrecken sich die Längsförderer über mindestens drei Blechtafellängen.Furthermore, from the DE 34 37 642 C2 a punching device is known which comprises two longitudinal transverse conveyor with grippers, each attacking with two pliers on one of the metal sheet sides. The longitudinal conveyors extend beyond the length of a metal sheet beyond the punching station and thus serve also the removal of the grid-like empty punched metal sheet. Thus, the longitudinal conveyor extend over at least three lengths of sheet metal.

Es ist Aufgabe der Erfindung, die eingangs bezeichnete Stanz- und Zuführvorrichtung so zu vereinfachen, dass die kürzer ist und weniger Transporteure und Antriebsmittel umfasst.It is an object of the invention to simplify the initially described punching and feeding device so that it is shorter and comprises fewer conveyors and drive means.

Die Lösung besteht darin, dass bei einer gattungsgemäßen Vorrichtung jeweils zu- und abführseitig etwa symmetrisch der Werkzeuge nahe vor und hinter diesen stationär jeweils eine getrennt steuerbare Querfordervorrichtung angeordnet sind, die jeweils ein Antriebswalzenpaar als die Längsfördervorrichtung trägt, das die Blechtafel klemmend gesteuert fördert oder gelöst gesteuert freigibt.The solution is that in a generic device in each case on and off about symmetrically the tools are arranged in front of and behind this stationary each a separately controllable Querfordervorrichtung each carrying a pair of drive rollers as the longitudinal conveyor, which promotes the metal plate controlled by clamping or dissolved controlled release.

Vorteilhafte Ausgestaltungen und Betriebsverfahren sind in den Unteransprüchen angegeben.Advantageous embodiments and operating methods are specified in the subclaims.

Die beiden Antriebswalzen, die sich jeweils über eine maximale Blechtafelbreite erstrecken, sind jeweils auf einem quer liegenden Schlittenförderer verfahrbar, so dass eine jeweils zwischen mindestens einem Walzenpaar eingeklemmte Blechtafel von diesem in der Durchförderrichtung und mit dem Schlittenförderer quer positionierbar ist, so dass mit nur einem oder mehreren Stanzwerkzeugen alle Stanzpositionen ansteuerbar sind, wie es ein völliges Leerstanzen erfordert. Sowohl die Walzen als auch die Querförderer sind entsprechend mit genau positionierenden Motoren angesteuert.The two drive rollers, each extending over a maximum plate width, are each movable on a transverse carriage conveyor, so that a respectively clamped between at least one roller pair of sheet metal of this in the conveying direction and with the carriage conveyor is transversely positionable, so that only one or more punching tools all punching positions are controlled, as it requires a complete blank punching. Both the rollers and the cross conveyors are controlled accordingly with exactly positioning motors.

Vorzugsweise ist jeder Schlitten mit einem Spindelantrieb zu einem stationär an einem Grundgestell montierten Antriebsmotor verbunden, jedoch können auch andere Linearpositionierungssysteme vorgesehen werden.Preferably, each carriage is connected by a spindle drive to a drive motor mounted stationarily on a base frame, but other linear positioning systems can also be provided.

Auch der Walzenantriebsmotor ist vorteilhaft gestellfest montiert und über eine Antriebswelle mit einem darauf verschieblichen Koppelelement zur Walze verbunden.Also, the roller drive motor is advantageously mounted fixed to the frame and connected via a drive shaft with a coupling element displaceable thereon to the roller.

Die Förderwalzenpaare haben jeweils eine im Abstand verstellbare Walze, so dass die Walzen in der einen Verstellung einen weiten Spalt aufweisen, durch den ein Stanzblech frei verschiebbar ist, und in der anderen Einstellung so zusammengepresst sind, dass ein zwischenliegendes Blech exakt mitgenommen wird, wenn die angetriebene Walze sich dreht. Die Lagerung der verstellbaren Andruckwalze ist beispielsweise in Bolzen-Buchse-Führungen oder in Schwenkhebeln am Schlitten gehalten Je ein Pneumatikzylinder und eine Gegenfeder erbringen die Kraft zum Öffnen und Schließen der Walzen an beiden endseitigen Lagern.The conveyor roller pairs each have a variable pitch roller so that the rollers in the one adjustment have a wide gap through which a punching plate is freely displaceable, and are compressed in the other setting so that an intermediate plate is exactly taken when the driven roller turns. The storage of the adjustable pressure roller is held, for example, in bolt-bushing guides or in pivoting levers on the carriage. A pneumatic cylinder and a counter-spring provide the force for opening and closing the rollers at both end-side bearings.

Weiterhin sind vorteilhaft ein- oder beidseitig jedes Walzenpaares Niederhalterleisten auf dem Schlitten angeordnet, die vorzugsweise elektromagnetisch gegen eine Gegenfeder angehoben bzw. aufgedrückt werden. Durch das Schließen des Niederhalters wird das Blech neben der Stanze beruhigt und festgehalten, so dass es sich beim Stanzen oder bei einer ausschließlichen Querförderung nicht in der Walze verziehen kann. Während eines Durchförderns einer Blechtafel durch eines der Walzenpaare sind dessen Niederhalter angehoben, um die Blechtafel frei passieren zu lassen.Furthermore, advantageously one or both sides of each pair of rollers hold-down rails are arranged on the carriage, which are preferably raised or pushed electromagnetically against a counter-spring. By closing the blank holder, the sheet is calmed and held next to the punch, so that it can not forgive in the roll during punching or in an exclusive cross promotion. During a conveyance of a metal sheet through one of the pairs of rollers whose hold-down are raised to let pass freely through the metal sheet.

Die exakte Ausrichtung einer Blechkante zu der dazu senkrechten Förderrichtungen wird durch Positionssensoren, die optisch, elektromagnetisch oder mechanisch arbeiten, überwacht. Die Sensorsignale dienen einer Steuervorrichtung zu einer korrigierenden Ansteuerung der Fördermotoren sowie der Andruckmittel und Niederhalter.The exact alignment of a sheet metal edge to the conveying directions perpendicular thereto is monitored by position sensors which operate optically, electromagnetically or mechanically. The sensor signals serve a control device for a corrective control of the conveyor motors and the pressure means and hold-down.

Da die Förderwalzen eine gewisse Elastizität aufweisen, ändert sich ihr Förderdurchmesser abhängig von der Andruckkraft, so dass eine nur einseitig angedrückte Walze ein Drehmoment auf das Blech ausübt, das zu dessen Ausrichtung führt, wenn das andere Walzenpaar geöffnet gesteuert ist oder nicht von der Blechtafel durchsetzt ist und die Niederhalter demgemäß geöffnet sind oder einer in geeigneter Weise nur einseitig geschlossen ist.Since the conveyor rollers have a certain elasticity, their conveying diameter changes depending on the pressing force, so that a roller pressed only on one side exerts a torque on the sheet, which leads to its orientation when the other pair of rollers is controlled open or not penetrated by the metal sheet is and the hold-downs are accordingly opened or suitably closed only on one side.

Eine besonders effektive Winkellagerkorrektur einer Blechtafel erfolgt dann, wenn die beiden Walzenpaare jeweils an ihren entgegengesetzten Enden einseitig angedrückt und synchron oder mit differierender Drehzahl oder -richtung angetrieben werden oder die Schlitten leicht gegeneinander bewegt werden.A particularly effective angular position correction of a metal sheet takes place when the two pairs of rolls are each pressed on one side at their opposite ends and driven synchronously or with differing speed or direction, or the slides are easily moved against each other.

Die Positionssensoren oder Lagesensoren sind vorteilhaft an den Schlitten ein- und/oder auslaufseitig der Walzen angeordnet. Vorzugsweise sind sie in beiden Förderrichtungen miteinander fluchtend angeordnet, so dass alle Kanten auf ihre Lage vermessen werden und die Winkelkorrektur vermittels der Winkeldifferenz geregelt werden kann.The position sensors or position sensors are advantageously arranged on the carriage and / or outlet side of the rollers. Preferably, they are arranged in alignment with one another in both conveying directions, so that all edges are measured for their position and the angle correction can be regulated by means of the angular difference.

Die Blechtafeln werden beim Einführen einer neuen Tafel so zueinander positioniert, dass sie Kante an Kante hintereinander anschließen und die Stanzungen ohne einen Stanzleerhub aneinander anschließend ausgeführt werden können.The metal sheets are positioned to each other when inserting a new board so that they connect edge to edge in a row and the punching can be performed without a punching blanket to each other.

Die Übergabe einer neuen Blechtafel erfolgt unmittelbar in das erste Walzenpaar, worauf sie ergriffen und weiterbefördert wird. Das leer gestanzte Blech wird vom zweiten Walzenpaar beschleunigt unmittelbar über einen Rutsch- oder Rolltisch einer nachgeordneten Stapelablage zugeführt, so dass keine zusätzliche Fläche verbraucht wird und eine Ausziehvorrichtung entfällt.The transfer of a new metal sheet takes place directly in the first pair of rollers, whereupon they are gripped and transported on. The blank punched sheet is accelerated by the second pair of rollers fed directly via a sliding or rolling table a downstream stack tray, so that no additional area is consumed and eliminates an extractor.

Da verschiedene Produkte auf der Stanz-Ziehvorrichtung hergestellt werden, wie Dosendeckel, Flachdosen etc., die in unterschiedlichen Stückzahlen geordert werden, genügt es in vielen Fällen, nur ein Stanzwerkzeug vorzusehen, was erhebliche Werkzeugkosten spart, aber insgesamt einen längeren Blechdurchlauf erfordert. Bei größeren Stückzahlanforderungen ist es zweckmäßig, mehrere Werkzeuge auf der Brücke vorzusehen, so dass demgemäß die Stückleistung der Anlage steigt und die Anzahl der Querpositionierungen in einer Zeile abnimmt.Since various products are produced on the punch-drawing device, such as can ends, flat boxes, etc., which are ordered in different quantities, it is sufficient in many cases to provide only one punching tool, which saves considerable tooling costs, but overall requires a longer sheet pass. at larger quantities required, it is expedient to provide multiple tools on the bridge, so that accordingly the unit performance of the system increases and decreases the number of transverse positioning in a row.

In einer vorteilhaft ausgestalteten Zuführvorrichtung wird die Blechtafel jeweils von Förderbändern oder dgl. in die Einzugswalzen bei geöffnetem Walzenspalt eingeführt, wobei eine Reihe von feststehenden Kantenanschlägen die Blechtafel ausrichten, indem diese von seitlich verschiebbaren Anschlägen, die an der entgegengesetzten Kante kraftbelastend angreifen, gegen die fixen Anschläge geschoben und angedrückt wird. Die Anschläge sind vorteilhaft mit freilaufenden hohlkehligen Rollen bestückt, so dass der Förderbewegung durch die Förderbänder praktisch kein Widerstand entgegengesetzt wird. Eine so ausgerichtete Blechtafel wird nach ihrem Eintritt in den Walzenspalt von diesen nach dem Schließen ergriffen und ohne Verzug weiterbefördert, so dass eine weitere Ausrichtsteuerung im Allgemeinen entbehrlich ist.In an advantageously designed feeding device, the metal sheet is introduced by conveyor belts or the like. In the feed rollers with the nip open, with a series of fixed edge stops align the metal sheet by these from laterally displaceable attacks, the force acting on the opposite edge, against the fixed Stops pushed and pressed. The stops are advantageously equipped with free-running hollow-edged rollers, so that the conveying movement is opposed by the conveyor belts virtually no resistance. Such a aligned metal sheet is taken after their entry into the nip of these after closing and transported without delay, so that a further alignment control is generally unnecessary.

Um einen Quertransport des Bleches auf dem Zuführtisch ohne Hemmung zu ermöglichten, sind die Anschläge, wie Fig. 4, Schnitt A - A schematisch zeigt, versenkbar, indem sie jeweils seitlich abgeschwenkt werden durch einen pneumatischen, elektrischen oder dgl. steuerbaren Antrieb, der schematisch dargestellt ist. Ebenso sind die Vorschubantriebe an den Riemenlagern versenkbar durch Steuerelemente.In order to enable a transverse transport of the sheet on the feed table without inhibition, the stops are like Fig. 4 , Section A - A shows schematically, retractable, by each side swung by a pneumatic, electric or the like. Controllable drive, which is shown schematically. Likewise, the feed drives on the belt bearings are retractable by controls.

Eine vorteilhafte Ausgestaltung zeigen Fig. 1 und 3.

Fig. 1
zeigt eine Übersichtsperspektivansicht, bei der das Grundgestell und die Stanzbrücke nur rudimentär dargestellt sind;
Fig. 2
zeigt einen Querschnitt durch die beiden walzentragenden Schlitten;
Fig. 3
zeigt eine Zuführvorrichtung an dem Ergänzungswalzenpaar in Draufsicht;
Fig. 4 und 5
zeigen schematisch einen Schnitt A - A zu Fig. 3 in diversen Zuständen.
An advantageous embodiment show Fig. 1 and 3 ,
Fig. 1
shows an overview perspective view in which the base frame and the punching bridge are shown only rudimentary;
Fig. 2
shows a cross section through the two roller-carrying carriage;
Fig. 3
shows a feeding device on the supplementary roller pair in plan view;
4 and 5
schematically show a section A - A too Fig. 3 in various states.

Fig. 1 zeigt schematisch an zwei Seiten ein Grundgestell 13, 14, auf dem zwei. Querfördervorrichtungen 20, 40 mit ihren Positionierantriebsmotoren 23, 43 und mit Walzenantriebsmotoren 34, 54 montiert sind. Zwischen dem Grundgestell 13, 14 erstreckt sich eine nur rudimentär dargestellte Brücke 10, die ein Press- und Stanzwerkzeug 1 trägt, zu dem koaxial darunter im Gestell eine Matrize 1 A angeordnet ist. Die beiden Querfördervorrichtungen 20, 40 bestehen jeweils aus einer Schlittenführung 21, 41, die sich über mindestens zwei maximale Blechtafelbreiten B erstreckt. Fig. 1 schematically shows on two sides of a base frame 13, 14, on the two. Cross conveyors 20, 40 with their positioning drive motors 23, 43 and with roller drive motors 34, 54 are mounted. Between the base frame 13, 14 extends only a rudimentary illustrated bridge 10, which carries a pressing and punching tool 1, to the coaxially below in the frame a die 1 A is arranged. The two transverse conveyor devices 20, 40 each consist of a slide guide 21, 41, which extends over at least two maximum plate widths B.

In den Schlittenführungen 21, 41 ist jeweils ein Schlitten 22, 42 querverschieblich gelagert, der mit einem Lineartrieb verbunden ist, der hier beispielsweise ein Spindelantrieb ist, dessen Antriebsmotor 23, 43 eine hier nicht sichtbare Spindel antreibt, die sich längs in der Schlittenführungsanordnung und durch den Schlitten 22, 42 erstreckt, in dem eine Spindelmutter montiert ist.In the slide guides 21, 41 is a respective slide 22, 42 mounted transversely displaceable, which is connected to a linear drive, which here is for example a spindle drive, the drive motor 23, 43 drives a spindle not visible here, the longitudinally in the carriage guide assembly and by the carriage 22, 42 extends, in which a spindle nut is mounted.

In den Schlitten 22, 42 sind jeweils übereinander zwei Antriebswalzen montiert, von denen die untere über eine Antriebswelle 33, 53 von dem Walzenantriebsmotor 34, 54 angetrieben ist und die obere als Andruckwalze fungiert. Diese obere Walze ist jeweils in einer Vertikalführung 25, 26; 45, 46 beidendig höhenbeweglich in Lagerblöcken 38, 39; 58, 59 gelagert und dort mittels eines Druckluftzylinders und einer Gegenfeder in eine freigebende und eine klemmende Stellung bewegbar. Auf diese Weise wird eine Blechtafel 11, 12, die sich im Walzenspalt befindet, durch den jeweils angetriebenen Walzenantrieb in der Durchlaufrichtung gefördert, wenn der Zylinder Druckluft zugeführt bekommt, wozu die steuerbaren Druckluftventile 27A, 28A; 47A, 48A dienen. Somit dienen die gesteuert angetriebenen Walzenpaare 31, 32; 51, 52 als Längsrördervorrichtungen 30, 50.In the carriage 22, 42, two drive rollers are mounted one above the other, of which the lower is driven by a drive shaft 33, 53 of the roller drive motor 34, 54 and the upper acts as a pressure roller. This upper roller is in each case in a vertical guide 25, 26; 45, 46 at both ends movable in height in bearing blocks 38, 39; 58, 59 stored and there by means of a pneumatic cylinder and a counter-spring in a releasing and a clamping position movable. In this way, a metal sheet 11, 12, which is located in the nip, promoted by the respective driven roller drive in the direction of passage, when the cylinder receives compressed air supplied, including the controllable compressed air valves 27A, 28A; 47A, 48A serve. Thus, the controlled driven roller pairs 31, 32; 51, 52 as longitudinal conveyor devices 30, 50.

Zum Erkennen der Parallelausrichtung der Kanten K der Blechtafeln 11, 12 in der Fördervorrichtung dienen an den Schlitten 22, 42 angeordnete Positionssensoren S1 - S8. Insbesondere der Einlauf der Vorderkante K1 und der Auslauf der Hinterkante K2 sowie die Parallellage der Kanten K1, K2 sind mit den genau ausgerichteten und nahe an den Walzenlagern angeordneten Sensoren S1 - S8 messtechnisch zu erfassen. Es eignen sich optische, elektromagnetische und mechanische Abtaster.To detect the parallel alignment of the edges K of the metal sheets 11, 12 in the conveyor serve to the carriage 22, 42 arranged position sensors S1 - S8. In particular, the inlet of the leading edge K1 and the outlet of the trailing edge K2 as well as the parallel position of the edges K1, K2 are to be detected by measurement with the precisely aligned sensors S1-S8 arranged close to the roller bearings. Optical, electromagnetic and mechanical samplers are suitable.

Die Signale der Sensoren S1 - S8 sind einem Steuerprozessor zugeführt, der ein Betriebsprogramm enthält, durch das die Antriebsmotoren 23, 34; 43, 54, die Pneumatikventile 27A, 28A; 47A, 48A und hier nicht erkennbare elektromagnetische Niederhalter 35, 36, 37; 55, 56, 57 gesteuert werden. Die Pneumatikventile verbinden die Pneumatiksteller der Walzenlager entweder mit einem Pressluftgeber PL oder einer Entlüftungsleitung.The signals from the sensors S1-S8 are fed to a control processor containing an operating program by which the drive motors 23, 34; 43, 54, the pneumatic valves 27A, 28A; 47A, 48A and here not recognizable electromagnetic hold-down 35, 36, 37; 55, 56, 57 are controlled. The pneumatic valves connect the pneumatic actuators of the roller bearings either with a compressed air generator PL or a vent line.

Fig. 2 zeigt im Querschnitt die beiden Längsförderer, wobei das Stanzwerkzeug 1, 1A ausgespart ist. Jeweils unten im Bild ist die Schlittenführung 21, 41 angeordnet, in der der Schlitten 22, 42 in die Bildtiefe verschieblich gelagert ist. Im Schlitten 22, 42 ist jeweils ein Förderwalzenpaar gelagert, unter dem eine Spindelmutter 24A, 44A auf einer Spindel 24, 44 läuft. Fig. 2 shows in cross section, the two longitudinal conveyor, wherein the punching tool 1, 1A is recessed. At the bottom of the picture, the carriage guide 21, 41 is arranged, in which the carriage 22, 42 is slidably mounted in the image depth. In the carriage 22, 42 a pair of conveyor rollers is mounted, under which a spindle nut 24A, 44A on a spindle 24, 44 runs.

Die untere Walze 32, 52 ist auf einer Antriebswelle 33, 53 verschieblich und drehfest gelagert. In oberen Lagerblöcken 38, 39 58, 59 ist die Andruckwalze 31,51 anhebbar und absenkbar gelagert, wozu dessen Lagerböcke 38, 39; 58, 59 in Säulen 25, 26; 45, 46 Vertikalführungen haben, die auf dem Schlitten 22, 42 fixiert sind.The lower roller 32, 52 is mounted on a drive shaft 33, 53 displaceable and rotationally fixed. In upper bearing blocks 38, 39 58, 59, the pressure roller 31,51 is mounted raised and lowered, including its bearing blocks 38, 39; 58, 59 in columns 25, 26; 45, 46 have vertical guides which are fixed on the carriage 22, 42.

Die Lagerböcke sind jeweils symmetrisch durch Pneumatikzylinder 27, 28; 47, 48 in der Andruckrichtung und durch nicht gezeigte Federn in der Abheberichtung beaufschlagt. Selbstverständlich ist auch eine doppelt wirkende Zweiwege-Pneumatik oder eine Umkehr der Federwirkrichtung und Pneumatikwirkrichtung alternativ vorzusehen.The bearing blocks are each symmetrical by pneumatic cylinder 27, 28; 47, 48 acted upon in the pressing direction and by springs not shown in the lifting direction. Of course, a double-acting two-way pneumatic or a reversal of the spring action direction and pneumatic acting direction is alternatively provided.

Jeweils einlaufseitig und auslaufseitig der Walzenpaare sind am Schlitten 22, 42 Niederhalter 36, 35; 55, 56 angeordnet, die jeweils durch einen Elektromagneten 36A, 35A; 55A, 56A gegen die Kraft einer nicht dargestellten Feder in eine Niederhalterstellung gedrückt oder angehoben wird.In each case inlet side and outlet side of the roller pairs are on the carriage 22, 42 hold-downs 36, 35; 55, 56, each by an electromagnet 36A, 35A; 55A, 56A is pressed or raised against the force of a spring, not shown, in a hold-down position.

Die Einzelsteuerbarkeit der Magneten 35A, 36A; 55A, 56A ermöglicht es, eine Blechtafel 12 beim Stanzen der letzten Lochreihe beidseitig des Werkzeugs festzuhalten und gleichzeitig bei geöffnetem eingangsseitigen Niederhalter 36 und angedrückter zulaufseitiger Walze 31 ein neues Blech 11 in eine Blechtafel an Blechtafel anschließende Position einzuziehen, wie Fig. 1 zeigt.The individual controllability of the magnets 35A, 36A; 55A, 56A makes it possible to hold a metal sheet 12 when punching the last row of holes on both sides of the tool and at the same time with the input side hold-down 36 and pressed feed side roller 31 a new sheet 11 to move into a metal sheet subsequent to sheet metal position, such Fig. 1 shows.

Analog werden beim Stanzen der ersten Lochreihe die beiden Niederhalter 35, 55 neben dem Stanzwerkzeug geschlossen und der auslaufseitige Niederhalter 56 geöffnet, so dass die leergestanzte gitterartige Blechtafel 12 mit gesteigerter Vorschubgeschwindigkeit ausgeworfen werden kann. Vorzugweise läuft sie über einen Rutschtisch, Rolltisch oder dgl. auf einen Stapel ab. Auch zuführseitig ist ein in Fig. 3 dargestellter Rutschtisch vorgesehen, der die allseitige Verschiebbarkeit der Blechtafel ermöglicht.Similarly, when punching the first row of holes, the two down holders 35, 55 are closed next to the punching tool and the outlet-side downholder 56 is opened, so that the empty punched grid-like metal sheet 12 can be ejected at an increased feed rate. Preferably, it runs over a slide table, rolling table or the like. On a stack. Also on the supply side is an in Fig. 3 illustrated slide table provided which allows the all-round displacement of the metal sheet.

Schematisch sind Zusatzniederhalter 37, 57 einlauf- und auslaufseitig dargestellt, die steuerbar sind und einer Beruhigung der Blechtafel nach schnellen Vorschubbewegungen und während des Stanzens dienen.Schematically additional back-up 37, 57 are shown inlet and outlet side, which are controllable and serve to calm the metal sheet after rapid feed movements and during punching.

Fig. 3 zeigt einen Zuführtisch 60 vor einer Längsfördervorrichtung 30 bei in geöffneten Walzen 31, 32 eingeschobener Blechtafel 11, deren Vorderkante K1 nahe am Kantensensor 75 steht, der das Schließen der Einzugswalzen 31, 32 steuert. Fig. 3 shows a feed table 60 in front of a longitudinal conveyor 30 with inserted in open rolls 31, 32 sheet metal plate 11, the leading edge K1 is close to the edge sensor 75, which controls the closing of the feed rollers 31, 32.

Auf dem Zuführtisch 60 sind als Fördemiittel beispielhaft zwei Vorschubbänder 61, 62 versenkbar angeordnet sowie gegen feste Anschläge angestellte Anschlagrollen 70, an denen die im Bild rechte Kante KR der Blechtafel 11 durch die andererseits angeordneten Andruck- und Ausrichtrollen 71 kraftschlüssig angelegt werden, wobei die Vorschubbänder 61, 62 abgesenkt gesteuert sein können.On the feed table 60 as Fördemiittel example, two feed belts 61, 62 arranged retractable and against fixed stops employed stop rollers 70, where the right in the image edge KR of the metal sheet 11 are frictionally applied by the other arranged Andruckrollen 71, wherein the feed belts 61, 62 can be controlled lowered.

Nach der Ausrichtung und Förderung mit dem Bandvorschub 61, 62 zur Detektierung durch den Kantensensor 75 tritt der Walzenvorschub in Aktion und der Zuführtisch 60 wird für das Quer- und Längsfördern freigegeben, indem die Ausrichtmittel und die Bandfördermittel abgesenkt werden.After alignment and advancement with the tape feed 61, 62 for detection by the edge sensor 75, the roll feed enters into action and the feed table 60 is released for transverse and longitudinal conveying by lowering the alignment means and the belt conveyors.

Fig. 4 und 5 zeigen einen Querschnitt A - A des Zuführtisches 60 mit einer aufgelegten Blechtafel 11, wobei Fig. 4 den Zustand des Ausrichtens veranschaulicht, wobei die rechte Kante KR im Bild gegen einen mit einer Rolle besetzten Anschlag 70 geschoben ist, indem je mit einer Kraft auf die entgegengesetzte Kante KL drückende Ausrichtrollen 71 die seitliche Position bestimmen. Die Förderbänder 61, 62 sind durch die Hubvorrichtungen 63, 64 abgesenkt. 4 and 5 show a cross section A - A of the feed table 60 with an inserted metal sheet 11, wherein Fig. 4 illustrates the state of alignment with the right edge KR in the image being slid against a roller-studed stop 70 by each of the aligning rollers 71 pressing with a force on the opposite edge KL to determine the lateral position. The conveyor belts 61, 62 are lowered by the lifting devices 63, 64.

Fig. 5 zeigt die Einzugsposition, in der die Förderbänder an ihren Umlenkrollen mit den Hubvorrichtungen 63, 64 abgesenkt sind und die Zentrierrollen 71, 70 seitlich durch Schwenkvorrichtungen 73, 72 abgeschwenkt sind, so dass eine freie Verschiebbarkeit in der Zuführvorrichtung und quer dazu während der einzelnen Förder- und Stanzschritte gegeben ist. Fig. 5 shows the retraction position, in which the conveyor belts are lowered at their pulleys with the lifting devices 63, 64 and the centering rollers 71, 70 are laterally pivoted by pivoting devices 73, 72, so that a free displacement in the feeder and transversely thereto during the individual conveyor and punching steps is given.

Vorzugsweise sind die Andruck- und Anschlagrollen 70, 71 mit konkaven Profilen versehen, so dass die Blechtafelkanten KL, KR eine genaue Position einnehmen, wenn der Schwenkantrieb 72 der Anschlagrolle 70 die Position am Anschlag 74 eingenommen hat.Preferably, the pressure and stop rollers 70, 71 are provided with concave profiles, so that the metal sheet edges KL, KR take a precise position when the pivot drive 72 of the stop roller 70 has taken the position on the stop 74.

Bezugszeichenliste

1, 1A
Stanzpresswerkzeuge
10
Brücke
11
Blechtafel (einlaufend)
12
Blechtafel (ablaufend)
13, 14
Grundgestell
20
Querfördervorrichtung zuführseitig
21
Schlittenführung
22
Schlitten
23
Positionierantriebsmotor
24
Spindelantrieb
24A
Spindelmutter
25, 26
Vertikal führungen
27, 28
Pneumatiksteller
27A, 28A
Steuerventile
30
1. Längsfördervorrichtung zuführend
31, 32
Antriebswalzenpaar
33
Antriebswelle der Walze
34
Positioniermotor für Walzenantrieb
35, 36
Niederhalter am Schlitten
35A, 36A
Elektromagnet/Feder
37
Zusatzniederhalter
38, 39
Lagerbock
40
2 Querfördervorrichtung abführseitig
41
Schlittenführung
42
Schlitten
43
Positionierantriebsmotor
44
Spindelantrieb
44A
Spindelmutter
45, 46
Vertikalführungen
47, 48
Pneumatiksteller
47A, 48A
Steuerventile
50
2. Längsfördervorrichtung abführseitig
51, 52
Antriebswalzenpaar
53
Antriebswelle
54
Positioniermotor für Walzenantrieb
55, 56
Niederhalter am Schlitten
55A, 56A
Elektromagnet/Feder
57
Zusatzniederhalter
58, 59
Lagerbock
60
Zuführtisch
61
1. Vorschubband
62
2. Vorschubband
63
1. Bandhubvorrichtung
64
2. Bandhubvorrichtung
70
Anschlagrollen
71
Andruck- und Ausrichtrollen
72
Schwenkvorrichtung für Anschlagrollen
73
Schwenkvorrichtung für Andruckrollen
74
Anschlag
75
Kantensensor
B
Blechtafelbreite
K, K1, K2
Blechtafelkanten
KR
rechte Kante
KL
linke Kante
P
Steuerprozessor
PL
Pressluft
S1-S8
Lagesensoren
LIST OF REFERENCE NUMBERS
1, 1A
Stamping press tools
10
bridge
11
Metal sheet (incoming)
12
Metal sheet (expiring)
13, 14
base frame
20
Cross conveyor on the supply side
21
carriage guide
22
carriage
23
Positionierantriebsmotor
24
spindle drive
24A
spindle nut
25, 26
Vertical guides
27, 28
pneumatic plate
27A, 28A
control valves
30
1. feeding longitudinal conveyor device
31, 32
Drive roller pair
33
Drive shaft of the roller
34
Positioning motor for roller drive
35, 36
Downholder on the sledge
35A, 36A
Solenoid / spring
37
Additional down device
38, 39
bearing block
40
2 Cross conveyor on the discharge side
41
carriage guide
42
carriage
43
Positionierantriebsmotor
44
spindle drive
44A
spindle nut
45, 46
vertical guides
47, 48
pneumatic plate
47A, 48A
control valves
50
2. longitudinal conveyor on the discharge side
51, 52
Drive roller pair
53
drive shaft
54
Positioning motor for roller drive
55, 56
Downholder on the sledge
55A, 56A
Solenoid / spring
57
Additional down device
58, 59
bearing block
60
feed
61
1. Feed belt
62
2nd feed belt
63
1. Bandhubvorrichtung
64
2. Bandhubvorrichtung
70
stop rollers
71
Pressure and alignment rollers
72
Swivel device for stop rollers
73
Swivel device for pressure rollers
74
attack
75
edge sensor
B
Metal sheet width
K, K1, K2
Metal sheet edges
KR
right edge
KL
left edge
P
control processor
PL
compressed air
S1-S8
position sensors

Claims (17)

  1. Apparatus for stamping can lids or the like, having a bridge (10) supported on a frame and carrying stamping tools (1) actuated vertically in a continuously repeating manner, having a longitudinal conveying device (30) gradually transporting metal sheets (11, 12) under said tools (1) in each case with the latter opened, and having a transverse conveying device (20, 40) laterally displacing to a limited extent the metal sheet (11, 12) moving or moved longitudinally in each case,
    characterized in that a separately controllable transverse conveying device (20, 40) is arranged in a stationary position in each case on the feed and discharge side approximately symmetrically to the tools (1) close in front of and behind the latter, said transverse conveying device (20, 40) in each case carrying a driving roller pair (31, 32; 51, 52) as the longitudinal conveying device (30, 50), which delivers the metal sheet (11, 12) in a controlled clamping manner or releases it in a controlled manner.
  2. Apparatus according to claim 1, characterized in that the transverse conveying devices (20, 40) respectively consist of a stationary carriage rail (21, 41) with a carriage (22, 42) bearing the driving rollers (31, 32; 51, 52), which extends across one maximum metal sheet width (B), and which, controlled by a linear drive (23, 43), can be moved across at least two maximum metal sheet widths (B) in the carriage rail (21, 41).
  3. Apparatus according to claim 2, characterized in that the linear drive activates the carriage (22, 42) by means of a positioning drive motor (23, 43) via a spindle drive (24, 44).
  4. Apparatus according to claim 2, characterized in that at least one of the driving rollers (32, 52) of each roller pair (31, 32; 51, 52) respectively, is crossed by and mobile on a torque proof driving shaft (33, 53), which ends at the frame and is actuated there by a positioning motor (34, 54).
  5. Apparatus according to claim 4, characterized in that one of the driving rollers (31, 51) of each roller pair (31, 32; 51, 52) respectively, is supported movably at both ends in pedestals (38, 39; 58, 59) on the carriage (22, 42) in vertical rails (25, 26; 45, 46) and adjustable vertically by means of a pneumatic actuator (27, 28; 47, 48).
  6. Apparatus according to claim 1, characterized in that an electromagnetically operated holding-down clamp (35, 36; 55, 56) is arranged respectively at the feed end and/or the discharge end of each roller pair (31, 32; 51, 52) on the carriage (22, 42).
  7. Apparatus according to claim 6, characterized in that one of the holding-down clamps (36, 55) at the feed and discharge end respectively, is arranged next to the tools (1), or that additional holding-down clamps (37, 57) are arranged there, towards the side of the carriage or the side of the frame.
  8. Apparatus according to claim 1, characterized in that position sensors (S1 - S8) of the sheet metal edges (K, K1, K2) are arranged at the carriages (22, 42) and / or the carriage rail (21, 41), the signals of said sensors controlling the positioning motors for the roller drives (34, 54) via a control processor (P) in such a way that the metal sheet edges (K1, K2) are conveyed parallel to the conveying directions, and that consecutive metal sheets (B) are flush.
  9. Apparatus according to claim 1, characterized in that a feed table (60) is arranged in front of the feed-sided longitudinal conveying device (30) said table carrying immersible feed devices (61, 62) and immersible aligning devices (70, 71), which in an activated state are adjusted in one feeding direction respectively, and are in force-fit contact with the side edges (KL, KR) of the fed-in metal sheet (11).
  10. Apparatus according to claim 9, characterized in that the feed devices (61, 62) are parallel conveyor belts, which can each be lifted and retracted with respect to the surface of the feed table (60) by a conveyor lifting gear (63, 64).
  11. Apparatus according to claim 9, characterized in that the aligning devices (70, 71) consist of two rows of stops and aligning axes, staffed with concave profiled rollers, each row pivoting around an axis of rotation orientated in the feed direction and situated below the surface of the table, and in such a way being disposable in a vertical alignment position and in a lowered position below the surface of the table.
  12. Method for the control of the apparatus according to one of the claims 1 - 11, on the bridge (10) of said apparatus one tool (1) or several of the tools (1) being arranged side by side, with a metal sheet (11) being fed transversally in each stamping row step by step until all stamping positions have been stamped out, and then transported in a neighbouring stamping row, forward in a longitudinal feed step only with the longitudinal conveying device, or vectored diagonally in combination with the transverse conveying device,
    characterized in that the holding-down clamps (35, 36; 55, 56) of one carriage (22, 42) are only released in a controlled manner if at least one of the driving roller pairs (31, 32; 51, 52) is activated.
  13. Method according to claim 12, characterized in that the pneumatic actuators (27, 28; 47, 48) of one of the driving roller pairs (31, 32; 51, 52) are only released in a controlled manner when an edge (K1) of a metal sheet (11), parallel to the roller pair, is fed in the roller pair (31, 32; 51, 52), or if the other roller pair is closed in a controlled manner.
  14. Method according to claim 13, characterized in that the pneumatic actuator (27, 28) of the feed-sided roller pair (31, 32) which is positioned at the advanced side of the metal sheet (11) is released in a controlled manner, until a given position of the edge (K1) in the conveying direction is reached.
  15. Method according to one of the claims 12 - 14, characterized in that both roller pairs (31, 32; 51, 52) and / or the transverse conveying devices (20, 40) are activated synchronously, if a metal sheet (11) is located in both roller pairs.
  16. Method according to claim 13, characterized in that, when a last stamping row is stamped out from a metal sheet (12), only the tool-sided holding-down clamp (35) of the feed-sided driving roller pair (31, 32) is kept open and said roller pair advances the subsequent metal sheet (11) with its front edge (K1) against the edge (K2) of the processed metal sheet (12) and aligns it.
  17. Method according to claim 12, characterized in that, when the last stamping on a metal sheet (11) takes place, only the tool-sided holding-down clamp (35) of the discharge-sided driving roller pair (51, 52) is kept open, and the closed discharge-sided driving roller pair (51, 52) discharges the empty stamped metal sheet at a high speed.
EP07727217A 2006-03-29 2007-03-22 Stamping apparatus with feed device Active EP1919641B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
SI200730022T SI1919641T1 (en) 2006-03-29 2007-03-22 Stamping apparatus with feed device
PL07727217T PL1919641T3 (en) 2006-03-29 2007-03-22 Stamping apparatus with feed device

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006014454A DE102006014454B3 (en) 2006-03-29 2006-03-29 Punching device with feeding device
PCT/EP2007/052741 WO2007113120A1 (en) 2006-03-29 2007-03-22 Stamping apparatus with feed device

Publications (2)

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EP1919641A1 EP1919641A1 (en) 2008-05-14
EP1919641B1 true EP1919641B1 (en) 2008-12-24

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US (1) US8272244B2 (en)
EP (1) EP1919641B1 (en)
JP (1) JP5131705B2 (en)
CN (1) CN101415506B (en)
AT (1) ATE418402T1 (en)
BR (1) BRPI0709842A2 (en)
CA (1) CA2645172C (en)
DE (2) DE102006014454B3 (en)
DK (1) DK1919641T3 (en)
EA (1) EA014847B1 (en)
ES (1) ES2320180T3 (en)
HK (1) HK1128652A1 (en)
MX (1) MX2008012489A (en)
PL (1) PL1919641T3 (en)
PT (1) PT1919641E (en)
SI (1) SI1919641T1 (en)
WO (1) WO2007113120A1 (en)

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CA2645172C (en) 2014-05-27
US8272244B2 (en) 2012-09-25
DE102006014454B3 (en) 2007-11-08
ES2320180T3 (en) 2009-05-19
CN101415506B (en) 2011-06-08
SI1919641T1 (en) 2009-06-30
JP2009531181A (en) 2009-09-03
BRPI0709842A2 (en) 2011-07-26
EP1919641A1 (en) 2008-05-14
EA200870382A1 (en) 2009-12-30
CN101415506A (en) 2009-04-22
DE502007000330D1 (en) 2009-02-05
EA014847B1 (en) 2011-02-28
PT1919641E (en) 2009-03-26
CA2645172A1 (en) 2007-10-11
HK1128652A1 (en) 2009-11-06
JP5131705B2 (en) 2013-01-30
WO2007113120A1 (en) 2007-10-11
MX2008012489A (en) 2008-12-03
ATE418402T1 (en) 2009-01-15
DK1919641T3 (en) 2009-04-14
US20090165524A1 (en) 2009-07-02
PL1919641T3 (en) 2009-06-30

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