EP1919641A1 - Stamping apparatus with feed device - Google Patents

Stamping apparatus with feed device

Info

Publication number
EP1919641A1
EP1919641A1 EP07727217A EP07727217A EP1919641A1 EP 1919641 A1 EP1919641 A1 EP 1919641A1 EP 07727217 A EP07727217 A EP 07727217A EP 07727217 A EP07727217 A EP 07727217A EP 1919641 A1 EP1919641 A1 EP 1919641A1
Authority
EP
European Patent Office
Prior art keywords
metal sheet
rollers
controlled
carriage
feed
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.)
Granted
Application number
EP07727217A
Other languages
German (de)
French (fr)
Other versions
EP1919641B1 (en
Inventor
Frank Hoffmann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hoffmann Frank
Original Assignee
Hoffmann Frank
Priority date (The priority date 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 date listed.)
Filing date
Publication date
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Application filed by Hoffmann Frank filed Critical Hoffmann Frank
Priority to PL07727217T priority Critical patent/PL1919641T3/en
Priority to SI200730022T priority patent/SI1919641T1/en
Publication of EP1919641A1 publication Critical patent/EP1919641A1/en
Application granted granted Critical
Publication of EP1919641B1 publication Critical patent/EP1919641B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • B21D43/08—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 Ul.
  • 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 processides.
  • a second Greifzangen- Buchschlitten- 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 in which stamped tools are arranged in two mutually staggered rows and which has a conveyor belt transporter for metal sheets, wherein in the transport direction at the leading and trailing edges of the panels driver are provided and a further feed device with laterally attacking pliers each advances a straight to punched metal sheet.
  • the very elaborate full equipment which also requires a very stable support bridge to accommodate the punching forces, eliminating the need for a transverse conveyance of the metal sheets.
  • a punching device which comprises two longitudinal cross conveyor with gripping tongs, which each attack 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.
  • each supply and removal side about symmetrically the tools are arranged in front of and behind this stationary each a separately controllable cross conveyor, each carrying a pair of drive rollers as the longitudinal conveyor, which promotes the metal plate controlled by clamping or releasably controlled releases.
  • the two drive rollers are each movable on a transverse carriage conveyor, so that a respectively clamped between at least one pair of rollers metal sheet 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 stationary mounted on a base frame drive motor, but other linear positioning systems can 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. 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 a fleeting manner 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.
  • the stops as shown in FIG. 4, section A - A schematically, retractable by being laterally swung by a pneumatic, electric or the like. Controllable drive, the schematic is shown. Likewise, the feed drives on the belt bearings are retractable by controls.
  • Fig. 1 shows an overview perspective view in which the base frame and the
  • Punched bridge are shown only rudimentary
  • Fig. 2 shows a cross section through the two roller-bearing carriages
  • Fig. 3 shows a feeding device on the supplementary roller pair in plan view
  • FIG. 4 and 5 schematically show a section A - A to Fig. 3 in various states.
  • Fig. 1 shows schematically on two sides of a base frame 13, 14, on which two transverse conveyor devices 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 coaxial below the frame a die IA 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 For detecting the parallel alignment of the edges K of the metal sheets 11, 12 in the conveyor serve on the carriage 22, 42 arranged position sensors Sl - 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 metrologically by means of the sensors S1-S8, which are precisely aligned and arranged close to the roller bearings.
  • Optical, electromagnetic and mechanical samplers are suitable.
  • the signals of the sensors Sl - S8 are fed to a control processor which contains an operating program by which the drive motors 23, 34; 43, 54, the pneumatic valves 27 A, 28 A; 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 conveyors, wherein the punching tool 1, IA 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.
  • 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; 55 A, 56 A 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 retract a new sheet 11 in a sheet metal plate subsequent to sheet metal with open input side hold-down 36 and pressed feed side roller 31, as 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.
  • a slide shown in Fig. 3 is 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 device 30 with metal sheet 11 inserted in opened rolls 31, 32, whose front edge Kl 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.
  • FIG. 4 and 5 show a cross-section A - A of the feed table 60 with a sheet metal plate 11 laid on it, FIG. 4 illustrating the state of alignment, with the right edge KR in the picture being pushed against a roller-studed stopper 70 by FIG with a force on the opposite edge KL pressing alignment rollers 71 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 pivoted laterally by pivoting devices 73, 72, so that a free displacement in the feeder and transversely thereto during the given individual conveying and punching steps.
  • 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. LIST OF REFERENCE NUMBERS

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)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Details Of Cutting Devices (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)
  • Control Of Conveyors (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

Stanzvorrichtung mit ZuführeinrichtungPunching device with feeding device
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 Ul 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. Weiterhin ist aus der EP O 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.Such a device is known from DE 296 23 908 Ul. 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 Greifzangen- 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. Furthermore, from EP O 616 861 B2, a punching device with a double-row tool is known in which stamped tools are arranged in two mutually staggered rows and which has a conveyor belt transporter for metal sheets, wherein in the transport direction at the leading and trailing edges of the panels driver are provided and a further feed device with laterally attacking pliers each advances a straight to punched metal sheet. The very elaborate full equipment, which also requires a very stable support bridge to accommodate the punching forces, eliminating the need for a transverse conveyance 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 DE 34 37 642 C2 a punching device is known which comprises two longitudinal cross conveyor with gripping tongs, which each attack 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 jeweils zu- und abführseitig etwa symmetrisch der Werkzeuge nahe vor und hinter diesen stationär jeweils eine getrennt steuerbare Querfördervorrichtung angeordnet sind, die jeweils ein Antriebswalzenpaar als die Längsfördervorrichtung trägt, das die Blechtafel klemmend gesteuert fördert oder gelöst gesteuert freigibt.The solution is that each supply and removal side about symmetrically the tools are arranged in front of and behind this stationary each a separately controllable cross conveyor, each carrying a pair of drive rollers as the longitudinal conveyor, which promotes the metal plate controlled by clamping or releasably controlled releases.
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 pair of rollers metal sheet 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 Linear- positionierungssysteme vorgesehen werden.Preferably, each carriage is connected by a spindle drive to a stationary mounted on a base frame drive motor, but other linear positioning systems can 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. 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.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. 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 flüchtend 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 a fleeting manner 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 ermöglichen, 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, as shown in FIG. 4, section A - A schematically, retractable by being laterally swung by a pneumatic, electric or the like. Controllable drive, the schematic is shown. Likewise, the feed drives on the belt bearings are retractable by controls.
Eine vorteilhafte Ausgestaltung zeigen Fig. 1 und 3.An advantageous embodiment, Figs. 1 and 3.
Fig. 1 zeigt eine Übersichtsperspektivansicht, bei der das Grundgestell und dieFig. 1 shows an overview perspective view in which the base frame and the
Stanzbrücke nur rudimentär dargestellt sind;Punched bridge are shown only rudimentary;
Fig. 2 zeigt einen Querschnitt durch die beiden walzentragenden Schlitten;Fig. 2 shows a cross section through the two roller-bearing carriages;
Fig. 3 zeigt eine Zuführvorrichtung an dem Ergänzungswalzenpaar in Draufsicht;Fig. 3 shows a feeding device on the supplementary roller pair in plan view;
Fig. 4 und 5 zeigen schematisch einen Schnitt A - A zu Fig. 3 in diversen Zuständen.4 and 5 schematically show a section A - A to 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 IA 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 shows schematically on two sides of a base frame 13, 14, on which two transverse conveyor devices 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 coaxial below the frame a die IA 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 Längsfördervorrichtungen 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 Sl - S8. Insbesondere der Einlauf der Vorderkante Kl und der Auslauf der Hinterkante K2 sowie die Parallellage der Kanten Kl, K2 sind mit den genau ausgerichteten und nahe an den Walzenlagern angeordneten Sensoren Sl - S8 messtechnisch zu erfassen. Es eignen sich optische, elektromagnetische und mechanische Abtaster.For detecting the parallel alignment of the edges K of the metal sheets 11, 12 in the conveyor serve on the carriage 22, 42 arranged position sensors Sl - 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 metrologically by means of the sensors S1-S8, which are precisely aligned and arranged close to the roller bearings. Optical, electromagnetic and mechanical samplers are suitable.
Die Signale der Sensoren Sl - S8 sind einem Steuerprozessor zugeführt, der ein Betriebsprogramm enthält, durch das die Antriebsmotoren 23, 34; 43, 54, die Pneumatikventile 27 A, 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 of the sensors Sl - S8 are fed to a control processor which contains an operating program by which the drive motors 23, 34; 43, 54, the pneumatic valves 27 A, 28 A; 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, IA 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 conveyors, wherein the punching tool 1, IA 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. 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 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. 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; 55 A, 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; 55 A, 56 A 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 retract a new sheet 11 in a sheet metal plate subsequent to sheet metal with open input side hold-down 36 and pressed feed side roller 31, as 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. On the supply side, a slide shown in Fig. 3 is 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 Kl nahe am Kantensensor 75 steht, der das Schließen der Einzugswalzen 31, 32 steuert. Auf dem Zuführtisch 60 sind als Fördermittel 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.FIG. 3 shows a feed table 60 in front of a longitudinal conveyor device 30 with metal sheet 11 inserted in opened rolls 31, 32, whose front edge Kl is close to the edge sensor 75, which controls the closing of the feed rollers 31, 32. On the feed table 60 as conveying means two feed belts 61, 62 are 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 pressure and alignment rollers 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 a sheet metal plate 11 laid on it, FIG. 4 illustrating the state of alignment, with the right edge KR in the picture being pushed against a roller-studed stopper 70 by FIG with a force on the opposite edge KL pressing alignment rollers 71 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 pivoted laterally by pivoting devices 73, 72, so that a free displacement in the feeder and transversely thereto during the given individual conveying and punching steps.
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. BezugszeichenlistePreferably, 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. LIST OF REFERENCE NUMBERS
1, IA Stanzpresswerkzeuge1, IA stamping press tools
10 Brücke10 bridge
11 Blechtafel (einlaufend)11 metal sheet (incoming)
12 Blechtafel (ablaufend)12 metal sheet (expiring)
13, 14 Grundgestell13, 14 base frame
20 Querfördervorrichtung zuführseitig20 transverse conveyor on the supply side
21 S chlittenführung21 Sliding guide
22 Schlitten22 sleds
23 Positionierantriebsmotor23 positioning drive motor
24 Spindelantrieb24 spindle drive
24A Spindelmutter24A spindle nut
25, 26 Vertikalführungen25, 26 vertical guides
27, 28 Pneumatiksteller27, 28 pneumatic actuators
27A, 28A Steuerventile27A, 28A control valves
30 1. Längsfördervorrichtung zuführend30 1. feeding longitudinal conveyor device
31, 32 Antriebswalzenpaar31, 32 drive roller pair
33 Antriebswelle der Walze33 drive shaft of the roller
34 Positioniermotor für Walzenantrieb34 Positioning motor for roller drive
35, 36 Niederhalter am Schlitten35, 36 hold-down on the slide
35A, 36A Elektromagnet/Feder35A, 36A solenoid / spring
37 Zusatzniederhalter37 additional retainers
38, 39 Lagerbock38, 39 bearing block
40 2 Querfördervorrichtung abführseitig40 2 Cross conveyor on the discharge side
41 S chlittenführung41 Sliding guide
42 Schlitten42 sleds
43 Positionierantriebsmotor43 positioning drive motor
44 Spindelantrieb44 spindle drive
44A Spindelmutter44A spindle nut
45, 46 Vertikalführungen45, 46 vertical guides
47, 48 Pneumatiksteller 47A, 48A Steuerventile47, 48 pneumatic actuators 47A, 48A control valves
50 2. Längsfördervorrichtung abführseitig50 2nd longitudinal conveyor on the discharge side
51, 52 Antriebswalzenpaar51, 52 drive roller pair
53 Antriebswelle53 drive shaft
54 Positioniermotor für Walzenantrieb54 Positioning motor for roller drive
55, 56 Niederhalter am Schlitten55, 56 hold-down on the slide
55A, 56A Elektromagnet/Feder55A, 56A solenoid / spring
57 Zusatzniederhalter57 additional hold-down
58, 59 Lagerbock58, 59 bearing block
60 Zuführtisch60 feed table
61 1. Vorschubband61 1. Feed belt
62 2. Vorschubband62 2. Feed belt
63 1. Bandhubvorrichtung63 1. Band lifting device
64 2. Bandhubvorrichtung64 2. Bandhubvorrichtung
70 Anschlagrollen70 stop rollers
71 Andruck- und Ausrichtrollen71 pressure and alignment rollers
72 Schwenkvorrichtung für Anschlagrollen72 Pivoting device for stop rollers
73 Schwenkvorrichtung für Andruckrollen73 Swivel device for pressure rollers
74 Anschlag74 stop
75 Kantensensor75 edge sensor
B BlechtafelbreiteB metal sheet width
K, Kl, K2 B lechtafelkantenK, Kl, K2 B lechtafelkanten
KR rechte KanteKR right edge
KL linke KanteKL left edge
P SteuerprozessorP control processor
PL PressluftPL compressed air
Sl - S8 Lagesensoren Sl - S8 position sensors

Claims

Patentansprüche claims
1. Vorrichtung zum Stanzpressen von Dosendeckeln oder dgl., mit einer auf einem Gestell getragenen, kontinuierlich repetierend vertikal betätigten Stanzpresswerkzeuge (1) tragenden Brücke (10) mit einer unter diesen Blechtafeln (11, 12) jeweils bei geöffneten Werkzeugen (1) schrittweise hindurchtransportierenden Längsfördervorrichtung (30) und mit einer die sich jeweils längs bewegende oder bewegte Blechtafel (11, 12) beschränkt seitlich versetzende Querfördervorrichtung (20, 40), dadurch gekennzeichnet, dass jeweils zu- und abführseitig etwa symmetrisch der Werkzeuge (1) nahe vor und hinter diesen stationär jeweils eine getrennt steuerbare Querfördervorrichtung (20, 40) angeordnet sind, die jeweils ein Antriebswalzenpaar (31, 32; 51, 52) als die Längsfördervorrichtung (30, 50) trägt, das die Blechtafel (11, 12) klemmend gesteuert fördert oder gelöst gesteuert freigibt.1. Apparatus for punching can lids or the like., With a supported on a frame, continuously repetitive vertically operated punch presses (1) bearing bridge (10) with one of these metal sheets (11, 12) each with open tools (1) gradually transported therethrough Longitudinal conveyor device (30) and with a longitudinally moving or moving metal sheet (11, 12) limited laterally offset transverse conveyor device (20, 40), characterized in that each supply and removal approximately symmetrical about the tools (1) near in front of and behind these stationary respectively a separately controllable transverse conveyor device (20, 40) are arranged, each of which a drive roller pair (31, 32, 51, 52) as the longitudinal conveyor device (30, 50) carries, which conveys the metal sheet (11, 12) controlled by clamping or released controlled releases.
2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Querfördervorrichtungen (20, 40) jeweils aus einer stationären Schlittenführung (21, 41) mit einem die Antriebswalzen (31, 32; 51, 52) tragenden Schlitten (22, 42) besteht, der sich über eine maximale Blechtafelbreite (B) erstreckt; und von einem Linearantrieb (23, 43) gesteuert über mindestens zwei maximale Blechtafelbreiten (B) in der Schlittenführung (21, 41) verfahrbar ist.2. Apparatus according to claim 1, characterized in that the transverse conveying devices (20, 40) each consist of a stationary slide guide (21, 41) with a drive rollers (31, 32, 51, 52) carrying carriage (22, 42), extending over a maximum panel width (B); and by a linear drive (23, 43) controlled over at least two maximum plate widths (B) in the carriage guide (21, 41) is movable.
3. Vorrichtung nach Anspruch 2, dadurch gekennzeichnet, dass der Linearantrieb mittels eines Positionierantriebsmotors (23, 43) den Schlitten (22, 42) mittels eines Spindelantriebs (24, 44) antreibt.3. Apparatus according to claim 2, characterized in that the linear drive by means of a positioning drive motor (23, 43) drives the carriage (22, 42) by means of a spindle drive (24, 44).
4. Vorrichtung nach Anspruch 2, dadurch gekennzeichnet, dass jeweils mindestens eine der Förderwalzen (32, 52) jedes Walzenpaares (31, 32, 51, 52) von einer drehfesten Antriebswelle (33, 53) verschieblich durchsetzt ist, die gestellseitig endet und dort von einem Positioniermotor (34, 54) angetrieben ist. 4. Apparatus according to claim 2, characterized in that in each case at least one of the conveying rollers (32, 52) of each roller pair (31, 32, 51, 52) of a non-rotatable drive shaft (33, 53) is displaceably interspersed, the frame side ends and there is driven by a positioning motor (34, 54).
5. Vorrichtung nach Anspruch 4, dadurch gekennzeichnet, dass jeweils eine der Förderwalzen (31, 51) jedes Walzenpaares (31, 32, 51, 52) endseitig in Lagerböcken (38, 39; 58, 59) auf dem Schlitten (22, 42) in Vertikalführungen (25, 26; 45, 46) verschieblich gehalten ist und jeweils mittels eines Pneumatikstellers (27, 38; 47, 48) höhenmäßig zu verstellen ist.5. Apparatus according to claim 4, characterized in that in each case one of the conveying rollers (31, 51) of each roller pair (31, 32, 51, 52) end in bearing blocks (38, 39; 58, 59) on the carriage (22, 42 ) is held displaceably in vertical guides (25, 26, 45, 46) and in each case can be adjusted in height by means of a pneumatic actuator (27, 38, 47, 48).
6. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass zu- und/oder abführseitig eines jeden Walzenpaares (31, 32; 51, 52) jeweils eine elektromagnetisch zu betätigende Niederhalterleiste (35, 36; 55, 56) auf dem Schlitten (22, 42) angeordnet ist.6. Apparatus according to claim 1, characterized in that on the supply and / or discharge side of each pair of rollers (31, 32, 51, 52) each have an electromagnetically operated hold-down bar (35, 36, 55, 56) on the carriage (22, 42) is arranged.
7. Vorrichtung nach Anspruch 6, dadurch gekennzeichnet, dass jeweils eine der zu und abführseitigen Niederhalterleisten (36, 55) den Werkzeugen (1) eng benachbart angeordnet ist oder dort weitere Niederhalterleisten (37, 57) schütten- oder gestellseitig angeordnet sind.7. The device according to claim 6, characterized in that each one of the to and Abführseitigen hold-down bars (36, 55) the tools (1) is arranged closely adjacent or there further hold-down strips (37, 57) schütten- or arranged on the frame side.
8. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass an den Schlitten (22, 42) und/oder der Schlittenführung (21, 41) Positionssensoren (Sl - S 8) der Blechtafelkanten (K, Kl, K2) angeordnet sind, deren Signale über einen Steuerprozessor (P) die Walzenpositioniermotoren (34, 54 so steuern, dass die Blechtafelkanten (Kl, K2) parallel zu den Förderrichtungen gefördert werden und aufeinander folgende Blechtafeln (B) bündig aneinander anschließen.8. The device according to claim 1, characterized in that on the carriage (22, 42) and / or the carriage guide (21, 41) position sensors (Sl - S 8) of the sheet metal edges (K, Kl, K2) are arranged, whose signals via a control processor (P) the Walzenpositioniermotoren (34, 54 control so that the metal sheet edges (Kl, K2) are conveyed parallel to the conveying directions and successive metal sheets (B) flush with each other.
9. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass vor der zuführseitigen Längsfördervorrichtung (30) ein Zuführtisch (60) angeordnet ist, der versenkbare Vorschubmittel (61, 62) und versenkbare Ausrichtmittel (70, 71) trägt, die in einem aktivierten Zustand jeweils in einer Zuführrichtung ausgerichtet die Seitenkanten (KL, KR) der zuzuführenden Blechtafel (11) kraftschlüssig kontaktieren.9. The device according to claim 1, characterized in that in front of the feed side longitudinal conveyor (30) a feed table (60) is arranged, the retractable feed means (61, 62) and retractable alignment means (70, 71) carries, which in an activated state respectively aligned in a feed direction, the side edges (KL, KR) of the supplied sheet metal (11) frictionally contact.
10. Vorrichtung nach Anspruch 9, dadurch gekennzeichnet, dass die Vorschubmittel (61, 62) parallele Vorschubbänder sind, die jeweils durch eine Bandhubvorrichtung (63, 64) über die Tischfläche des Zuführtisches (60) anhebbar oder absenkbar sind. 10. The device according to claim 9, characterized in that the feed means (61, 62) are parallel feed belts, each by a Bandhubvorrichtung (63, 64) on the table surface of the feed table (60) are raised or lowered.
11. Vorrichtung nach Anspruch 9, dadurch gekennzeichnet, dass die Ausrichtmittel (70, 71) zwei Reihen von mit konkav profilierten Rollen besetzte Anschläge und Ausrichtachsen sind, die jeweils mit Schwenkvorrichtungen um eine in der Zufuhrrichtung orientierte unter der Tischfläche liegende Schwenkachse verschwenkbar und so in eine vertikale Ausrichtstellung und eine unter die Tischfläche abgesenkte Stellung verbringbar sind.11. The device according to claim 9, characterized in that the alignment means (70, 71) are two rows of concave profiled rollers occupied stops and alignment axes, each with pivoting devices about an oriented in the feed direction under the table surface pivot axis pivotally and thus in a vertical alignment position and a lowered position under the table surface can be brought.
12. Verfahren zur Steuerung der Vorrichtung nach einem der Ansprüche 1 - 11, bei der auf der Brücke (10) ein Werkzeug (1) oder mehrere der Werkzeuge (1) nebeneinander angeordnet ist/sind, wobei eine Blechtafel (11) in einer Stanzzeile jeweils solange schrittweise quergefördert wird, bis alle Stanzpositionen darin ausgestanzt sind, und dann in einem Längsförderschritt nur mit der Längsfördervorrichtung vorwärts oder kombiniert mit der Querförderrichtung schräg gerichtet in eine benachbarte Stanzzeile transportiert wird, dadurch gekennzeichnet, dass die Niederhalterleisten (35, 36; 55, 56) eines Schlittens (22, 42) nur dann gelöst gesteuert sind, wenn mindestens eines der Antriebspaare (31, 32; 51, 52) angetrieben ist.12. A method for controlling the device according to any one of claims 1-11, wherein on the bridge (10) a tool (1) or more of the tools (1) is arranged side by side / are, wherein a metal sheet (11) in a punching line is progressively transversely conveyed until all the punching positions are punched out therein, and then transported in a longitudinal conveying step only with the longitudinal conveyor forward or combined with the transverse conveying direction obliquely directed into an adjacent punch line, characterized in that the hold-down strips (35, 36; 56) of a carriage (22, 42) are only controlled in a controlled manner when at least one of the drive pairs (31, 32, 51, 52) is driven.
13. Verfahren nach Anspruch 12, dadurch gekennzeichnet, dass die Pneumatiksteller (27, 28; 47, 48) eines der Walzenpaare (31, 32; 51, 52) nur dann gelöst gesteuert sind, wenn eine dazu parallele Kante (Kl) einer Blechtafel (11) in das Walzenpaar (31, 32; 51, 52) einläuft oder das andere Walzenpaar geschlossen gesteuert ist.13. The method according to claim 12, characterized in that the pneumatic actuators (27, 28, 47, 48) of one of the pairs of rollers (31, 32, 51, 52) are controlled only dissolved when a parallel edge (Kl) a metal sheet (11) into the pair of rollers (31, 32, 51, 52) enters or the other pair of rollers is closed controlled.
14. Verfahren nach Anspruch 13, dadurch gekennzeichnet, dass jeweils der Pneumatiksteller (27, 28) des zulaufseitigen Walzenpaares (31, 32) gelöst gesteuert wird, der auf einer voreilenden Seite der Blechtafel (11) liegt, bis eine vorgegebene Lage der Kante (Kl) in der Förderrichtung erreicht ist.14. The method according to claim 13, characterized in that in each case the pneumatic actuator (27, 28) of the inlet-side roller pair (31, 32) is controlled dissolved, which lies on a leading side of the metal sheet (11) until a predetermined position of the edge ( Kl) is reached in the conveying direction.
15. Verfahren nach einem der Ansprüche 12 bis 14, dadurch gekennzeichnet, dass dann, wenn sich eine Blechtafel (11) in beiden Walzenpaaren (31, 32; 51, 52) befindet, diese und/oder die Querfördervorrichtungen (20, 40) synchron angesteuert werden. 15. The method according to any one of claims 12 to 14, characterized in that when there is a metal sheet (11) in both pairs of rollers (31, 32, 51, 52), these and / or the transverse conveyor devices (20, 40) synchronously be controlled.
16. Verfahren nach Anspruch 13, dadurch gekennzeichnet, dass dann, wenn aus einer Blechtafel (12) eine letzte Stanzzeile ausgestanzt wird, nur der werkzeugseitige Niederhalter (35) des zulaufseitigen Förderwalzenpaares (31, 32) offen gehalten wird und dieses die nachfolgende Blechtafel (11) mit der vorderen Kante (Kl) an die Kante (K2) der zu bearbeiteten Blechtafel (12) heranfördert und ausrichtet.16. The method according to claim 13, characterized in that when a sheet metal plate (12) a last punching line is punched out, only the tool-side hold-down (35) of the inlet-side conveyor roller pair (31, 32) is kept open and this the subsequent metal sheet ( 11) with the front edge (Kl) to the edge (K2) of the sheet metal plate (12) to be processed and aligned.
17. Verfahren nach Anspruch 12, dadurch gekennzeichnet, dass dann, wenn aus einer Blechtafel (11) die letzte Stanzung ausgeführt wird, nur der werkzeugseitige Niederhalter (55) des ablaufseitigen Förderwalzenpaares (51, 52) offen gehalten wird und das geschlossene ablaufseitige Förderwalzenpaar (51, 52) die leer gestanzte Blechtafel (12) mit hoher Geschwindigkeit ausfördert. 17. The method according to claim 12, characterized in that when from a metal sheet (11), the last punching is performed, only the tool-side hold-down (55) of the downstream-side conveyor roller pair (51, 52) is kept open and the closed drain-side conveyor roller pair ( 51, 52), the empty punched metal sheet (12) ausfördert at high speed.
EP07727217A 2006-03-29 2007-03-22 Stamping apparatus with feed device Active EP1919641B1 (en)

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DE102006014454A DE102006014454B3 (en) 2006-03-29 2006-03-29 Punching device with feeding device
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JP5131705B2 (en) 2013-01-30
US20090165524A1 (en) 2009-07-02
ATE418402T1 (en) 2009-01-15
CN101415506A (en) 2009-04-22
CA2645172C (en) 2014-05-27
EP1919641B1 (en) 2008-12-24
CN101415506B (en) 2011-06-08
WO2007113120A1 (en) 2007-10-11
US8272244B2 (en) 2012-09-25
MX2008012489A (en) 2008-12-03
DE502007000330D1 (en) 2009-02-05
JP2009531181A (en) 2009-09-03
PL1919641T3 (en) 2009-06-30
HK1128652A1 (en) 2009-11-06
EA014847B1 (en) 2011-02-28
ES2320180T3 (en) 2009-05-19
DK1919641T3 (en) 2009-04-14
EA200870382A1 (en) 2009-12-30
CA2645172A1 (en) 2007-10-11
SI1919641T1 (en) 2009-06-30
PT1919641E (en) 2009-03-26
BRPI0709842A2 (en) 2011-07-26
DE102006014454B3 (en) 2007-11-08

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