EP3896018B1 - Method and device for positionally accurate feeding of sheet metal plates to a machining process or a machining unit - Google Patents

Method and device for positionally accurate feeding of sheet metal plates to a machining process or a machining unit Download PDF

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Publication number
EP3896018B1
EP3896018B1 EP21161483.9A EP21161483A EP3896018B1 EP 3896018 B1 EP3896018 B1 EP 3896018B1 EP 21161483 A EP21161483 A EP 21161483A EP 3896018 B1 EP3896018 B1 EP 3896018B1
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EP
European Patent Office
Prior art keywords
transport
transport device
flat sheet
metal panel
sheet
Prior art date
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Active
Application number
EP21161483.9A
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German (de)
French (fr)
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EP3896018A1 (en
Inventor
Florian Amann
Klaus Kirsch
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Koenig and Bauer AG
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Koenig and Bauer AG
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Publication of EP3896018A1 publication Critical patent/EP3896018A1/en
Application granted granted Critical
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H9/00—Registering, e.g. orientating, articles; Devices therefor
    • B65H9/10—Pusher and like movable registers; Pusher or gripper devices which move articles into registered position
    • B65H9/103—Pusher and like movable registers; Pusher or gripper devices which move articles into registered position acting by friction or suction on the article for pushing or pulling it into registered position, e.g. against a stop
    • B65H9/105—Pusher and like movable registers; Pusher or gripper devices which move articles into registered position acting by friction or suction on the article for pushing or pulling it into registered position, e.g. against a stop using suction means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H11/00—Feed tables
    • B65H11/002—Feed tables incorporating transport belts
    • B65H11/005—Suction belts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H7/00—Controlling article feeding, separating, pile-advancing, or associated apparatus, to take account of incorrect feeding, absence of articles, or presence of faulty articles
    • B65H7/02—Controlling article feeding, separating, pile-advancing, or associated apparatus, to take account of incorrect feeding, absence of articles, or presence of faulty articles by feelers or detectors
    • B65H7/06—Controlling article feeding, separating, pile-advancing, or associated apparatus, to take account of incorrect feeding, absence of articles, or presence of faulty articles by feelers or detectors responsive to presence of faulty articles or incorrect separation or feed
    • B65H7/10—Controlling article feeding, separating, pile-advancing, or associated apparatus, to take account of incorrect feeding, absence of articles, or presence of faulty articles by feelers or detectors responsive to presence of faulty articles or incorrect separation or feed responsive to incorrect side register
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H7/00—Controlling article feeding, separating, pile-advancing, or associated apparatus, to take account of incorrect feeding, absence of articles, or presence of faulty articles
    • B65H7/02—Controlling article feeding, separating, pile-advancing, or associated apparatus, to take account of incorrect feeding, absence of articles, or presence of faulty articles by feelers or detectors
    • B65H7/14—Controlling article feeding, separating, pile-advancing, or associated apparatus, to take account of incorrect feeding, absence of articles, or presence of faulty articles by feelers or detectors by photoelectric feelers or detectors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/30—Orientation, displacement, position of the handled material
    • B65H2301/33—Modifying, selecting, changing orientation
    • B65H2301/331—Skewing, correcting skew, i.e. changing slightly orientation of material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/40—Type of handling process
    • B65H2301/44—Moving, forwarding, guiding material
    • B65H2301/447—Moving, forwarding, guiding material transferring material between transport devices
    • B65H2301/4473—Belts, endless moving elements on which the material is in surface contact
    • B65H2301/44735—Belts, endless moving elements on which the material is in surface contact suction belt
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2404/00—Parts for transporting or guiding the handled material
    • B65H2404/20—Belts
    • B65H2404/26—Particular arrangement of belt, or belts
    • B65H2404/264—Arrangement of side-by-side belts
    • B65H2404/2641—Arrangement of side-by-side belts on movable frame
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2404/00—Parts for transporting or guiding the handled material
    • B65H2404/20—Belts
    • B65H2404/26—Particular arrangement of belt, or belts
    • B65H2404/269—Particular arrangement of belt, or belts other arrangements
    • B65H2404/2691—Arrangement of successive belts forming a transport path
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2406/00—Means using fluid
    • B65H2406/10—Means using fluid made only for exhausting gaseous medium
    • B65H2406/11—Means using fluid made only for exhausting gaseous medium producing fluidised bed
    • B65H2406/113—Details of the part distributing the air cushion
    • B65H2406/1132—Multiple nozzles arrangement
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2406/00—Means using fluid
    • B65H2406/30—Suction means
    • B65H2406/32—Suction belts
    • B65H2406/321—Suction belts integral in feed table
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2406/00—Means using fluid
    • B65H2406/30—Suction means
    • B65H2406/32—Suction belts
    • B65H2406/322—Suction distributing means
    • B65H2406/3221—Suction distributing means for variable distribution in the direction of transport
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2406/00—Means using fluid
    • B65H2406/30—Suction means
    • B65H2406/32—Suction belts
    • B65H2406/322—Suction distributing means
    • B65H2406/3222—Suction distributing means switchable suction elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2406/00—Means using fluid
    • B65H2406/30—Suction means
    • B65H2406/36—Means for producing, distributing or controlling suction
    • B65H2406/365—Means for producing, distributing or controlling suction selectively blowing or sucking
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2511/00—Dimensions; Position; Numbers; Identification; Occurrences
    • B65H2511/20—Location in space
    • B65H2511/24—Irregularities, e.g. in orientation or skewness
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2513/00—Dynamic entities; Timing aspects
    • B65H2513/10—Speed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2553/00—Sensing or detecting means
    • B65H2553/40—Sensing or detecting means using optical, e.g. photographic, elements
    • B65H2553/41—Photoelectric detectors
    • B65H2553/412—Photoelectric detectors in barrier arrangements, i.e. emitter facing a receptor element
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2553/00—Sensing or detecting means
    • B65H2553/40—Sensing or detecting means using optical, e.g. photographic, elements
    • B65H2553/41—Photoelectric detectors
    • B65H2553/416—Array arrangement, i.e. row of emitters or detectors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/10—Handled articles or webs
    • B65H2701/13—Parts concerned of the handled material
    • B65H2701/131—Edges
    • B65H2701/1311—Edges leading edge
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/10—Handled articles or webs
    • B65H2701/13—Parts concerned of the handled material
    • B65H2701/131—Edges
    • B65H2701/1315—Edges side edges, i.e. regarded in context of transport
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/10—Handled articles or webs
    • B65H2701/17—Nature of material
    • B65H2701/173—Metal
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2801/00—Application field
    • B65H2801/03—Image reproduction devices
    • B65H2801/21—Industrial-size printers, e.g. rotary printing press
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2801/00—Application field
    • B65H2801/42—Die-cutting

Definitions

  • the invention relates to a method and a device for feeding sheet metal panels with precise positioning to a printing or coating unit of a sheet metal coating machine.
  • the metal sheets which are transported lying one behind the other, hit the positioning marks or stops during their transport, so that the metal sheets are forced to be brought into the desired or precise position.
  • a tilt correction can be provided for this purpose.
  • the front edge of the sheet metal is aligned essentially at right angles to the transport direction.
  • a lateral alignment of the metal sheet is provided, so that it can be fed to the machining process in the middle.
  • an optimal longitudinal alignment of the metal sheet with regard to the transport route is necessary so that it is fed to the processing process or the processing unit at the right time.
  • the DE 198 14 141 C2 describes a method for feeding flat goods to a machining process in a position-accurate manner, the goods being transported in a horizontal position arranged one behind the other and being aligned during transport.
  • the required aligning movements take place without mechanical aligning action on one or more peripheral edges of the item.
  • the necessary correction of the skew of the leading edge, the lateral alignment and the longitudinal alignment are carried out by two successively arranged transport devices, the first transport device only realizing the skew correction and the second transport device the lateral alignment and the longitudinal alignment.
  • the skew correction by the first transport device causes an undesired displacement of the goods transversely to the transport direction, which must be corrected with the second transport device.
  • the DE 692 07 737 T2 discloses an apparatus for handling and aligning bundles of flat objects.
  • the device includes two vertical to each other slidable conveyors, one consisting of a table with powered balls and the other comprising a series of separate powered rollers.
  • the control of the conveyor organs is carried out according to the desired lateral displacement and the desired orientation that is to be given to the bundle of flat objects.
  • the DE 10 2017 012 279 B3 describes a sheet processing machine with a sheet separator, a sheet guiding system, an acceleration device, a first alignment device with a rotating stop and a second alignment device.
  • a sensor that detects the position of the stop is provided for the purpose of aligning the sheets.
  • the invention is based on the object of creating a method and a device for feeding sheet metal panels with precise positioning to a printing or coating unit of a sheet metal coating machine, which enables high feeding accuracy even at high processing speeds.
  • the lateral position is aligned on a second transport device, which is located downstream of the first transport device.
  • the second transport device only has to correct the lateral position to the extent that was already required before the skew correction by the first transport device.
  • the solution found also has the advantage that the transport device transport device is variable in width and is suitable for transporting flat goods of different widths without structural adjustments.
  • the width of a flat sheet metal panel extends transversely to its respective transport direction.
  • the transport device transports the sheet metal panels, preferably floating as far as possible on an air cushion.
  • the sheet metal panels to be transported lie only on suction belts, with the relevant suction belts being arranged in particular in pairs parallel to one another. Otherwise, the flat sheet metal panels have no direct physical contact, e.g. B. to stationary in their transport plane arranged blast air boxes. Due to this configuration, a largely friction-free and/or slip-free transport of the sheet metal panels is possible.
  • the first and the second transport device can each have circulating transport means and associated vacuum areas that can be switched independently of one another.
  • the vacuum areas can be deactivated or activated one after the other, which in particular ensures reliable guidance of the respective flat sheet metal panels in connection with the possibility of aligning the same causes, wherein the transport device has a small extent in the transport direction.
  • FIG. 1 shows a transport device 01 for feeding sheet metal panels with precise positioning to a processing unit (not shown), which may be a painting machine or a printing machine or a punching machine.
  • the processing unit can be designed in particular for the processing of flat sheet metal panels.
  • the processing unit is located downstream of the transport device 01 in the transport direction 06 .
  • the transport device 01 comprises a first transport device 10 and a second transport device 20 downstream of the first transport device 10 in the transport direction 06.
  • a separating device not shown here, also referred to as a feeder, can be arranged upstream of the transport device 01.
  • the transport device 01 can also include a further transport device 30, which is arranged upstream of the first transport device 10 in the transport direction 06.
  • blast air boxes 17; 25; 17 are arranged, the air outlet openings 18; 26, preferably Venturi nozzles 18; 26, for generating a blown air cushion that supports the sheet-like metal sheets without contact.
  • the blast air boxes 17; 25 are outside the transport devices 10; 30; 20 trained.
  • the blown air for generating the blown air cushion is preferably generated by fans 34 which the blown air boxes 17; 25 are assigned on their subpages.
  • the further transport device 30 Viewed in the direction of transport 06, the further transport device 30, the first transport device 10 and the second transport device 20 are connected in series, so that a transfer of a respective flat metal sheet from a transport device 30; 10; 20 to the next is easily possible.
  • the first and the second transport device 10; 20 and preferably also the further transport device 30 have circulating transport means 11; 12; 21; 22; 31; 32, preferably as a suction belt 11; 12; 21; 22; 31; 32 are formed.
  • the suction belt 11; 12; 21; 22; 31; 32 are preferably toothed belts and have two guide grooves in the teeth. In one guide groove, which is preferably eccentric, a guide ring is guided without play on the toothed disks, in the other guide groove, which is preferably central, a suction rail runs with play in the upper area, through which the vacuum is applied. In the middle, the suction straps have 11; 12; 21; 22; 31; 32 vacuum holes.
  • the back of the belt is equipped with suction pockets to increase the suction area.
  • the transport devices 10; 20; 30 in each case two mutually parallel circumferential suction belts 11; 12; 21; 22; 31; 32 on. More preferred are individual or each suction belt 11; 12; 21; 22; 31; 32 assigned two or three independently switchable vacuum areas 16.
  • the vacuum regions 16 can be designed as chambers, with each of the chambers being able to be assigned a switchable valve, with which the respective chamber can be alternately connected to a vacuum source or separated from the vacuum source as required.
  • the vacuum is preferably switched via 2/3-way valves.
  • the vacuum areas 16 of a respective transport device 10; 20; 30 preferably adjoin one another, viewed in the direction of transport 06.
  • a transport device 10; 20; 30 with the flat metal sheets the last flat metal sheet the same transport device 30; 10; 20 can still overlap, ie if several sheet metal panels in the area of a respective transport device 30; 10; 20 are, the vacuum must be in several areas within a transport device 30; 10; 20 can be controlled separately.
  • a slight excess pressure can be applied to the system, in particular to the vacuum areas 16 . The valve then switches between vacuum and slight overpressure.
  • first transport device 10 and the second transport device 20 and a further transport device 30 can each have two suction belts 11; 12; 21; 22; 31; 32 include and the track width of the suction belt 11; 12 of the first transport device 10 to be greater than the track width of the suction belt 21; 22; 31; 32 of the second transport device 20 and/or the further transport device 30.
  • the different gauges of the suction belt 11; 12; 21; 22; 31; 32 of the transport devices 10; 20; 30 overlap viewed in the transport direction 06.
  • the overlap is preferably in the range of 10 percent of the extent of the respective suction belts 11; 12; 21; 22; 31; 32 in transport direction 06.
  • the means of transport 11; 12; 21; 22; 31; 32, in particular the suction belts 11; 12; 21; 22; 31; 32 are paired by means of transport drives 19; 27; 33 revolving driven.
  • each transport device 10; 20; 30 one of the other transport drives 19; 27, 33 independent means of transport drive 19; 27; 33 on.
  • the suction belt 11; 12; 21; 22; 31; 32 of a pair of belts of a transport device 10; 20; 30 can also have a common drive shaft by a transport means drive designed as a servo motor 19; 27; 33 are driven.
  • the suction belts 21; 22; 31; 32 of the second and the further transport device 20; 30 by the respective means of transport drives 27; 33 can be driven at variable speeds in the direction of transport 06 for transporting sheet metal panels.
  • the second transport device 20 has transport means 21 that can be accelerated and/or decelerated. 22 in the form of suction belts 21; 22 on. This means that the suction belts 21; 22 can be driven at a speed that is equal to, greater than or less than a transport speed of the processing unit.
  • the first transport device 10 is designed to implement a skew correction.
  • the first transport device 10 is perpendicular to the Axis running in the transport plane can be rotated and slidably mounted transversely to the direction of transport 06 with displacement of the axis.
  • the rotatable mounting of the first transport device 10 can be implemented by forming a bearing point, for example a turntable, with a rotational degree of freedom.
  • the rotatable bearing is preferably formed centrally in relation to the first transport device 10 .
  • the first transport device 10 also has a drive 15 with which the first transport device 10 can be rotated about an axis running through the bearing point.
  • the axis preferably runs perpendicular to the transport plane.
  • the drive 15 can be formed by an electromechanical cylinder 15 which acts on the first transport device 10 or parts thereof via a lever.
  • the first transport device 10 is also mounted so that it can be displaced transversely to the transport direction 06.
  • the first transport device 10 preferably has a linear guide 14 .
  • the first transport device 10 also includes a drive 13, with which the first transport device 10 can be displaced transversely to the transport direction 06 via the linear guide 14.
  • the drives 13; 15 can be controlled independently of one another.
  • the second transport device 20 is designed to implement a lateral position correction and is preferably mounted so that it can be displaced only transversely to the transport direction 06.
  • the structural design of the bearing means and drive means for realizing the displaceability transversely to the transport direction 06 is the same for the first and the second transport device 10; 20 preferably identical.
  • the second transport device 20 has a linear guide 24 and a drive 23, with which the second transport device 20 can be displaced on the linear guide 24 transversely to the transport direction 06.
  • the further transport device 30 is mounted rigidly in the frame.
  • the drives 13; 23 for transverse displacement as servomotors 13; 23 be trained.
  • the transport devices 10; 20; 30 each as units with respective means of transport drives 19; 27; 33 taken.
  • a transport device 10; 20 also always the associated means of transport drive 19; 27 relocatable.
  • all transport devices 10; 20; 30 mounted on a common frame.
  • the frame is firmly connected to the processing unit, for example a painting machine.
  • First, second and third sensors 41; 42; 43 formed and in the area of the transport devices 10; 20; 30 arranged.
  • First sensors 41 for detecting the inclined position of a respective flat sheet metal panel are preferably arranged in transport direction 06 upstream of the first transport device 10 and/or in the area of the first transport device 10 and/or in the area of a further transport device 30.
  • first sensors 41 can be embodied as two laser light barriers or reflection laser light barriers arranged spaced apart from one another transversely to transport direction 06 .
  • the first two sensors 41 are preferably designed to sense very quickly and are arranged at the same height in the direction of transport 06 and at a defined distance transversely to the direction of transport 06.
  • the distance is preferably 620 mm.
  • With the First sensors 41 are used to measure the oblique angle of the respective flat metal sheet via the time difference between triggering/sensing at the front edge of the flat metal sheet being transported.
  • At least one second sensor 42 can be arranged to detect the lateral position of a respective flat metal sheet.
  • Two second sensors 42 are preferably formed and are each assigned to one of the two side areas of the transport path. With the arrangement of two second sensors 42, one of the two side edges of the respective flat sheet metal panel can be sensed.
  • the or all of the second sensors 42 can be embodied as sensors 42 that extend transversely to the direction of transport 06 or can be displaced transversely to the direction of transport 06. The use of line sensors or laser line sensors is advantageous.
  • At least one third sensor 43 can be arranged to detect the longitudinal position of a respective flat metal sheet.
  • the at least one third sensor 43 is preferably designed as a laser light barrier.
  • sensors 41; 42; 43 for position detection there can also be sensors for checking the sheet movement and for measuring the vacuum level. It goes without saying that all movements and position corrections must be made in coordination with a respective system angle, for example of the processing unit.
  • This system angle can be fed to the transport device 01, in particular to its control in the form of an electronic master axis.
  • An angular position sensor can also be provided for detecting the system angle.
  • the transport device 01 can be used to carry out a method that is described below. The procedure is not limited to the use of the described transport device 01 limited.
  • alignment of the edge or alignment of the position are understood synonymously with correction of the edge position or correction of the position.
  • the flat sheet metal panels are transported in a horizontal position arranged one behind the other and aligned during transport.
  • the inclined position of the respective flat metal sheet is sensed and a first transport device 10 is rotated during the transport of the flat metal plate held by the first transport device 10, depending on the sensed inclined position, about an axis running perpendicular to the transport plane and displaced transversely to the transport direction 06.
  • the first transport device 10 is preferably displaced transversely to the transport direction 06 by a distance that corresponds to the displacement of the respective flat metal sheet transverse to the transport direction 06 resulting from the rotation of the first transport device 10 during the transport of a respective flat metal sheet.
  • the shift corrects a lateral position error that results exclusively from the rotation and the superimposed further transport of a respective flat metal sheet, for example by the suction belts 11, 12 during the twisting.
  • the first transport device 10 conveys the respective flat metal sheet at a slight angle, depending on the case, which is corrected by moving the first transport unit 10 transversely to the transport direction 06.
  • the speed of the transverse movement is dependent on the twisting angle.
  • the resulting conveying direction of the respective flat metal sheet is perpendicular to the processing gap, in particular the lacquer gap, of a processing unit.
  • the displacement of the first transport unit 10 transversely to the transport direction 06 preferably takes place as a function of the rotary deflection of the transport unit 10.
  • the speed of the transverse movement depends linearly on the angle of the rotary movement.
  • the lateral position of the respective flat metal sheet is sensed and a second transport device 20 is displaced transversely to the transport direction 06 during the transport of the flat metal sheet held by the second transport device 20 .
  • the lateral position correction can take place before or after the skew correction, so that the second transport unit 20 could also be arranged in front of the first transport unit 10 .
  • the circulating transport means 21; 22 can be driven at times, depending on the sensed longitudinal position of a respective flat metal sheet, at a speed that is increased or reduced in relation to the transport speed of a processing unit downstream of the second transport device 20 .
  • the correction of the longitudinal position of a respective flat metal sheet can also be carried out with the additional transport device 30 .
  • the transfer to the machining process must take place at a transport speed of the machining process or the machining machine.
  • a feeder is configured upstream of transport device 01, which, when sheet metal panels are provided, creates larger distances between the front edges of successive sheet metal panels than is required when processing the sheet metal panels by a processing unit downstream of transport device 01, the sheet metal panels can preferably be fed on the further and/or the second transport device 30; 20 are braked. This can be done in superimposition to the longitudinal correction.
  • This condition is also referred to as driving the feeder with a different format than the processing unit.
  • the lateral position and the longitudinal position of a respective flat metal sheet are corrected simultaneously by shifting the second transport device 20 and changing the transport speed.
  • the flat sheet metal panels are during the transport of the first transport device 10 and / or the second transport device 20 or each transport device 10; 20; 30 held by vacuum.
  • first transport device 10 and/or the second transport device 20 and/or each transport device 10; 20; 30 vacuum areas 16 that adjoin one another in the direction of transport 06, their vacuum is successively deactivated or activated in areas during the transfer and/or acceptance of a respective flat metal sheet.
  • the longitudinal position of the respective sheet-like metal sheet is sensed during the transport of the respective sheet-like sheet metal panel held by the second transport device 20, with sensing quite generally being the detection with a sensor 41; 42; 43 is understood.
  • the lateral position of the respective flat metal sheet is detected during the transport of the respective flat metal sheet held by the second transport device 20 and the second transport device 20 is displaced transversely to the transport direction 06 depending on the lateral position sensed.
  • the lateral position and the longitudinal position are sensed simultaneously.
  • the inclined position of the respective sheet metal plate is sensed in particular during the transport of the sheet metal plate held by the first transport device 10 or during the transport of the sheet metal plate held by another transport device 30 arranged upstream of the first transport device 10 .
  • the flat metal sheet is sucked in by means of a vacuum and held on a first transport section along the first transport device 10 .
  • a vacuum In the area in front of the first transport section or in the area of the first transport section, an inclined position of the flat metal sheet is sensed.
  • the determination of the lateral position and the longitudinal position of the two-dimensional metal sheet is then carried out.
  • the lateral movement is carried out in the area of the second transport section and/or the transport speed in the area of the second transport section is temporarily changed. This is followed by the transfer to the machining process with a transport speed of the machining process.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Registering Or Overturning Sheets (AREA)
  • Delivering By Means Of Belts And Rollers (AREA)

Description

Die Erfindung betrifft ein Verfahren und eine Vorrichtung zum positionsgenauen Zuführen von Blechtafeln zu einem Druck- oder Lackierwerk einer Blech-Beschichtungsmaschine.The invention relates to a method and a device for feeding sheet metal panels with precise positioning to a printing or coating unit of a sheet metal coating machine.

Das Zuführen von flächenförmigen Gütern, insbesondere Blechtafeln, zu einem Bearbeitungsprozess, beispielsweise Lackier- oder Bedruckungsprozess, muss für zufriedenstellende Lackier- oder Druckergebnisse positionsgenau erfolgen.The feeding of flat goods, in particular sheet metal, to a processing process, for example a painting or printing process, must be carried out in a precise position for satisfactory painting or printing results.

Hierzu ist es bekannt, eine mechanische Ausrichtung der Blechtafeln durch Seitenmarken, Anlegmarken, Tafelanschläge oder dergleichen vorzunehmen.For this purpose, it is known to mechanically align the metal sheets by means of side marks, positioning marks, sheet stops or the like.

Die Blechtafeln, die liegend hintereinander transportiert werden, treffen während ihres Transports auf die Anlegmarken beziehungsweise Anschläge, so dass die Blechtafeln dadurch zwangsweise in die gewünschte beziehungsweise genaue Position gebracht werden. Dazu kann eine Schräglagenkorrektur vorgesehen sein. Dabei wird die Vorderkante der Blechtafel im Wesentlichen rechtwinklig zur Transportrichtung ausgerichtet. Ferner ist eine seitliche Ausrichtung der Blechtafel vorgesehen, so dass diese mittig dem Bearbeitungsprozess zugeführt werden kann. Schließlich ist eine optimale Längsausrichtung der Blechtafel bezüglich der Transportstrecke notwendig, damit diese zum richtigen Zeitpunkt dem Bearbeitungsprozess beziehungsweise der Bearbeitungseinheit zugeführt wird.The metal sheets, which are transported lying one behind the other, hit the positioning marks or stops during their transport, so that the metal sheets are forced to be brought into the desired or precise position. A tilt correction can be provided for this purpose. The front edge of the sheet metal is aligned essentially at right angles to the transport direction. Furthermore, a lateral alignment of the metal sheet is provided, so that it can be fed to the machining process in the middle. Finally, an optimal longitudinal alignment of the metal sheet with regard to the transport route is necessary so that it is fed to the processing process or the processing unit at the right time.

Da aufgrund einer Materialersparnis die Blechtafeln zunehmend geringere Blechdicken aufweisen und zudem immer höhere Produktionsgeschwindigkeiten gefordert werden, kann es bei den bekannten Verfahren beziehungsweise Vorrichtungen häufig zu Beschädigungen an den Tafelkanten kommen, da die Blechtafeln mit einer hohen Geschwindigkeit auf die Anschläge beziehungsweise Anlegmarken treffen. Insbesondere eine geringe Blechstärke aufweisende Blechtafeln werden dabei beschädigt.Since, due to material savings, the sheet metal panels are increasingly thinner and, moreover, ever higher production speeds are required, this can often happen with the known methods or devices Damage to the panel edges occurs because the metal panels hit the stops or positioning marks at high speed. In particular, metal sheets with a small sheet thickness are damaged in the process.

Aus der DE 10 2007 031 115 A1 sind eine Vorrichtung und ein Verfahren zum Ausrichten von tafelförmigen Gütern bekannt, bei denen umlaufende Ausrichtanschläge verwendet werden.From the DE 10 2007 031 115 A1 a device and a method for aligning panel-shaped goods are known, in which circumferential alignment stops are used.

Die DE 198 14 141 C2 beschreibt ein Verfahren zum positionsgenauen Zuführen von flächenförmigen Gütern zu einem Bearbeitungsprozess, wobei die Güter in Hintereinanderanordnung in liegender Position transportiert und während des Transports ausgerichtet werden. Die erforderlichen Ausrichtbewegungen erfolgen ohne mechanische Ausrichtbeaufschlagung einer oder mehrerer Umfangskanten des Gutes.the DE 198 14 141 C2 describes a method for feeding flat goods to a machining process in a position-accurate manner, the goods being transported in a horizontal position arranged one behind the other and being aligned during transport. The required aligning movements take place without mechanical aligning action on one or more peripheral edges of the item.

Die erforderliche Schräglagenkorrektur der Vorderkante, die Seitenausrichtung und die Längsausrichtung werden von zwei nacheinander angeordneten Transporteinrichtungen ausgeführt, wobei die erste Transporteinrichtung nur die Schräglagenkorrektur und die zweite Transporteinrichtung die Seitenausrichtung und die Längsausrichtung realisiert.The necessary correction of the skew of the leading edge, the lateral alignment and the longitudinal alignment are carried out by two successively arranged transport devices, the first transport device only realizing the skew correction and the second transport device the lateral alignment and the longitudinal alignment.

Die Schräglagenkorrektur durch die erste Transporteinrichtung bewirkt eine unerwünschte Verlagerung des Gutes quer zur Transportrichtung, die mit der zweiten Transporteinrichtung korrigiert werden muss.The skew correction by the first transport device causes an undesired displacement of the goods transversely to the transport direction, which must be corrected with the second transport device.

Aus der DE 198 14 141 C2 ist auch bekannt die erforderliche Schräglagenkorrektur der Vorderkante, die Seitenausrichtung und die Längsausrichtung mit einer einzigen Transporteinrichtung zu realisieren.From the DE 198 14 141 C2 is also known to realize the necessary correction of the skew of the leading edge, the lateral alignment and the longitudinal alignment with a single transport device.

Die DE 692 07 737 T2 offenbart eine Vorrichtung zum Handhaben und Ausrichten von Bündeln aus flachen Gegenständen. Die Vorrichtung umfasst zwei vertikal zueinander verschiebbare Förderorgane, von denen eines aus einem Tisch mit angetriebenen Kugeln besteht und das andere eine Reihe voneinander getrennter angetriebener Rollen umfasst. Die Steuerung der Förderorgane erfolgt nach der gewünschten seitlichen Verschiebung und der gewünschten Ausrichtung, die jeweiligen dem Bündel der flachen Gegenstände zu vermitteln ist.the DE 692 07 737 T2 discloses an apparatus for handling and aligning bundles of flat objects. The device includes two vertical to each other slidable conveyors, one consisting of a table with powered balls and the other comprising a series of separate powered rollers. The control of the conveyor organs is carried out according to the desired lateral displacement and the desired orientation that is to be given to the bundle of flat objects.

Die DE 10 2017 012 279 B3 beschreibt eine bogenverarbeitende Maschine mit einem Bogentrenner, einem Bogenführungssystem, einer Beschleunigungsvorrichtung, einer ersten Ausrichtevorrichtung mit umlaufenden Anschlag und einer zweiten Ausrichtevorrichtung. Zum Zweck der Ausrichtung der Bogen ist ein die Lage des Anschlags erfassender Sensor vorgesehen.the DE 10 2017 012 279 B3 describes a sheet processing machine with a sheet separator, a sheet guiding system, an acceleration device, a first alignment device with a rotating stop and a second alignment device. A sensor that detects the position of the stop is provided for the purpose of aligning the sheets.

Der Erfindung liegt die Aufgabe zugrunde, ein Verfahren und eine Vorrichtung zum positionsgenauen Zuführen von Blechtafeln zu einem Druck- oder Lackierwerk einer Blech-Beschichtungsmaschine zu schaffen, das/die auch bei großen Bearbeitungsgeschwindigkeiten eine hohe Zuführgenauigkeit ermöglicht.The invention is based on the object of creating a method and a device for feeding sheet metal panels with precise positioning to a printing or coating unit of a sheet metal coating machine, which enables high feeding accuracy even at high processing speeds.

Die Aufgabe wird erfindungsgemäß durch die Merkmale des Anspruches 1 und die Merkmale des Anspruchs 8 gelöst. Die abhängigen Ansprüche betreffen vorteilhafte Ausgestaltungen und/oder Weiterbildungen der gefundenen Lösung.The object is achieved according to the invention by the features of claim 1 and the features of claim 8 . The dependent claims relate to advantageous refinements and/or developments of the solution found.

Die mit der Erfindung erzielbaren Vorteile bestehen insbesondere darin, dass die Ausrichtung von flächenförmigen Blechtafeln in Bewegung ohne mechanische Anschläge erfolgt, wobei die Korrektur der Schräglage einer flächenförmigen Blechtafel keine unerwünschten Auswirkungen auf dessen Seitenlage hat.The advantages that can be achieved with the invention consist in particular in the fact that the alignment of sheet metal panels in motion takes place without mechanical stops, with the correction of the inclined position of a sheet metal panel having no undesirable effects on its lateral position.

Das wird insbesondere dadurch erreicht, dass die beim Korrigieren der Schräglage im Bereich der ersten Transporteinrichtung auftretende Bewegung der flächenförmigen Blechtafel quer zur Transportrichtung korrigiert wird. Infolgedessen ergibt sich eine resultierende Förderrichtung bei Korrigieren der Schräglage senkrecht zum Bearbeitungsspalt eines nachgelagerten Bearbeitungswerkes.This is achieved in particular by the fact that the movement of the sheet metal plate that occurs when correcting the inclined position in the region of the first transport device is corrected transversely to the transport direction. As a result, there is one resulting conveying direction when correcting the inclined position perpendicular to the processing gap of a downstream processing unit.

Die Ausrichtung der Seitenlage erfolgt auf einer zweiten Transporteinrichtung, die der ersten Transporteinrichtung nachgelagert ist. Die zweite Transporteinrichtung muss die Seitenlage nur noch in dem Umfang korrigieren, der bereits vor der Schräglagenkorrektur durch die erste Transporteinrichtung erforderlich war.The lateral position is aligned on a second transport device, which is located downstream of the first transport device. The second transport device only has to correct the lateral position to the extent that was already required before the skew correction by the first transport device.

Die gefundene Lösung hat zudem den Vorteil, dass die Transportvorrichtung Transporteinrichtung breitenvariabel ist und ohne konstruktive Anpassung für den Transport von flächenförmigen Gütern unterschiedlicher Breite geeignet ist. Die Breite einer flächenförmigen Blechtafel erstreckt sich dabei quer zu seiner jeweiligen Transportrichtung.The solution found also has the advantage that the transport device transport device is variable in width and is suitable for transporting flat goods of different widths without structural adjustments. The width of a flat sheet metal panel extends transversely to its respective transport direction.

Die Transportvorrichtung transportiert die flächenförmigen Blechtafeln vorzugsweise jeweils weitestgehend auf einem Luftkissen schwebend. Dabei liegen die zu transportierenden flächenförmigen Blechtafeln jeweils nur auf Saugriemen auf, wobei der betreffenden Saugriemen insbesondere paarweise parallel zueinander angeordnet sind. Ansonsten weisen die flächenförmigen Blechtafeln an ihren jeweiligen riemenfreien Randbereichen aufgrund des sie tragenden Luftkissens keinen direkten Berührungskontakt z. B. zu in ihrer Transportebene ortsfest angeordneten Blasluftkästen auf. Aufgrund dieser Ausgestaltung ist ein weitgehend reibungsfreier und/oder schlupffreier Transport der flächenförmigen Blechtafeln möglich.The transport device transports the sheet metal panels, preferably floating as far as possible on an air cushion. In this case, the sheet metal panels to be transported lie only on suction belts, with the relevant suction belts being arranged in particular in pairs parallel to one another. Otherwise, the flat sheet metal panels have no direct physical contact, e.g. B. to stationary in their transport plane arranged blast air boxes. Due to this configuration, a largely friction-free and/or slip-free transport of the sheet metal panels is possible.

Die erste und die zweite Transporteinrichtung können jeweils umlaufende Transportmittel und diesen zugeordneten unabhängig voneinander schaltbare Vakuumbereiche aufweisen. Zur Übergabe der flächenförmigen Blechtafeln von der ersten an die zweite Transporteinrichtung können die Vakuumbereiche nacheinander deaktiviert beziehungsweise aktiviert werden, was insbesondere eine sichere Führung der jeweiligen flächenförmigen Blechtafeln in Verbindung mit der Möglichkeit zur Ausrichtung derselben bewirkt, wobei die Transportvorrichtung eine geringe Erstreckung in Transportrichtung aufweist.The first and the second transport device can each have circulating transport means and associated vacuum areas that can be switched independently of one another. To transfer the sheet metal panels from the first to the second transport device, the vacuum areas can be deactivated or activated one after the other, which in particular ensures reliable guidance of the respective flat sheet metal panels in connection with the possibility of aligning the same causes, wherein the transport device has a small extent in the transport direction.

Das erweist sich insbesondere im Zusammenhang mit den zur Ausrichtung erforderlichen schnellen Ausrichtebewegungen der flächenförmigen Blechtafeln oder Änderungen der Transportgeschwindigkeit der flächenförmigen Blechtafeln als vorteilhaft.This proves to be advantageous in particular in connection with the rapid alignment movements of the sheet metal panels required for alignment or changes in the transport speed of the sheet metal panels.

Ausführungsbeispiele der Erfindung sind in den Zeichnungen dargestellt und werden im Folgenden näher beschrieben.Exemplary embodiments of the invention are shown in the drawings and are described in more detail below.

Es zeigen:

Fig. 1
eine erste Ansicht der Transportvorrichtung in dreidimensionaler Darstellung von oben;
Fig. 2
eine zweite Ansicht der Transportvorrichtung in dreidimensionaler Darstellung von unten;
Fig. 3
eine Draufsicht der Transportvorrichtung;
Fig. 4
eine Draufsicht der Transportvorrichtung gemäß Fig. 3 im Teilschnitt;
Fig. 5
eine Seitenansicht der Transportvorrichtung zu Fig. 3 und Fig. 4.
Show it:
1
a first view of the transport device in three-dimensional representation from above;
2
a second view of the transport device in three-dimensional representation from below;
3
a plan view of the transport device;
4
a plan view of the transport device according to FIG 3 in partial cut;
figure 5
a side view of the transport device 3 and 4 .

Fig. 1 zeigt eine Transportvorrichtung 01 zum positionsgenauen Zuführen von flächenförmigen Blechtafeln zu einer nicht dargestellten Bearbeitungseinheit, bei der es sich um eine Lackiermaschine oder eine Druckmaschine oder einer Stanzmaschine handeln kann. 1 shows a transport device 01 for feeding sheet metal panels with precise positioning to a processing unit (not shown), which may be a painting machine or a printing machine or a punching machine.

Die Bearbeitungseinheit kann insbesondere für die Bearbeitung von flächenförmigen von Blechtafeln ausgebildet sein. Die Bearbeitungseinheit ist in Transportrichtung 06 der Transportvorrichtung 01 nachgelagert.The processing unit can be designed in particular for the processing of flat sheet metal panels. The processing unit is located downstream of the transport device 01 in the transport direction 06 .

Die Transportvorrichtung 01 umfasst eine erste Transporteinrichtung 10 und eine der ersten Transporteinrichtung 10 in Transportrichtung 06 nachgelagerte zweite Transporteinrichtung 20. Der Transportvorrichtung 01 kann eine hier nicht dargestellte auch als Anleger bezeichnete Vereinzelungseinrichtung vorgeordnet sein. Die Transportvorrichtung 01 kann auch eine weitere Transporteinrichtung 30 umfassen, die der ersten Transporteinrichtung 10 in Transportrichtung 06 vorgeordnet ist.The transport device 01 comprises a first transport device 10 and a second transport device 20 downstream of the first transport device 10 in the transport direction 06. A separating device, not shown here, also referred to as a feeder, can be arranged upstream of the transport device 01. The transport device 01 can also include a further transport device 30, which is arranged upstream of the first transport device 10 in the transport direction 06.

Im Bereich der ersten Transporteinrichtung 10 und/oder der zweiten Transporteinrichtung 20 und/oder der weiteren Transporteinrichtung 30 sind vorzugsweise Blasluftkästen 17; 25; 17 angeordnet, die auf ihren den zu transportierenden flächenförmigen Blechtafeln zugewandten Seiten Luftaustrittsöffnungen 18; 26, vorzugsweise Venturidüsen 18; 26, zur Erzeugung eines die flächenförmigen Blechtafeln berührungslos tragenden Blasluftpolsters aufweisen. Die Blasluftkästen 17; 25 sind außerhalb der Transporteinrichtungen 10; 30; 20 ausgebildet. Die Blasluft zur Erzeugung des Blasluftpolsters wird vorzugsweise von Ventilatoren 34 erzeugt, die den Blasluftkästen 17; 25 auf ihren Unterseiten zugeordnet sind. In Transportrichtung 06 betrachtet ist die weitere Transporteinrichtung 30, die erste Transporteinrichtung 10 und die zweite Transporteinrichtung 20 hintereinander geschaltet, so das eine Übergabe einer jeweiligen flächenförmigen Blechtafel von einer Transporteinrichtung 30; 10; 20 zur nächsten ohne weiteres möglich ist.In the area of the first transport device 10 and/or the second transport device 20 and/or the further transport device 30, blast air boxes 17; 25; 17 are arranged, the air outlet openings 18; 26, preferably Venturi nozzles 18; 26, for generating a blown air cushion that supports the sheet-like metal sheets without contact. The blast air boxes 17; 25 are outside the transport devices 10; 30; 20 trained. The blown air for generating the blown air cushion is preferably generated by fans 34 which the blown air boxes 17; 25 are assigned on their subpages. Viewed in the direction of transport 06, the further transport device 30, the first transport device 10 and the second transport device 20 are connected in series, so that a transfer of a respective flat metal sheet from a transport device 30; 10; 20 to the next is easily possible.

Die erste und die zweite Transporteinrichtung 10; 20 sowie vorzugsweise auch die weitere Transporteinrichtung 30 weisen umlaufende Transportmittel 11; 12; 21; 22; 31; 32 auf, die vorzugsweise als Saugriemen 11; 12; 21; 22; 31; 32 ausgebildet sind. Die Saugriemen 11; 12; 21; 22; 31; 32 sind vorzugsweise Zahnriemen und haben in der Verzahnung zwei Führungsnuten. In der einen vorzugsweise außermittigen Führungsnut wird auf den Zahnscheiben ein Führungsring spielfrei geführt, in der anderen vorzugsweise mittigen Führungsnut läuft im oberen Bereich spielbehaftet eine Saugschiene, durch die das Vakuum aufgebracht wird. Mittig haben die Saugiemen 11; 12; 21; 22; 31; 32 Vakuumlöcher. Der Riemenrücken ist mit Saugtaschen bestückt um die Saugfläche zu vergrößern.The first and the second transport device 10; 20 and preferably also the further transport device 30 have circulating transport means 11; 12; 21; 22; 31; 32, preferably as a suction belt 11; 12; 21; 22; 31; 32 are formed. The suction belt 11; 12; 21; 22; 31; 32 are preferably toothed belts and have two guide grooves in the teeth. In one guide groove, which is preferably eccentric, a guide ring is guided without play on the toothed disks, in the other guide groove, which is preferably central, a suction rail runs with play in the upper area, through which the vacuum is applied. In the middle, the suction straps have 11; 12; 21; 22; 31; 32 vacuum holes. The back of the belt is equipped with suction pockets to increase the suction area.

Vorzugsweise weisen die Transporteinrichtungen 10; 20; 30 jeweils zwei parallele zueinander umlaufende Saugriemen 11; 12; 21; 22; 31; 32 auf. Weiter bevorzugt sind einzelnen oder jedem Saugriemen 11; 12; 21; 22; 31; 32 jeweils zwei oder drei unabhängig voneinander schaltbare Vakuumbereiche 16 zugeordnet. Die Vakuumbereiche 16 können als Kammern ausgebildet sein, wobei jeder der Kammern ein schaltbares Ventil zugeordnet sein kann, mit dem die jeweilige Kammer bei Bedarf wechselnd mit einer Unterdruckquelle verbindbar oder von der Unterdruckquelle trennbar ist.Preferably, the transport devices 10; 20; 30 in each case two mutually parallel circumferential suction belts 11; 12; 21; 22; 31; 32 on. More preferred are individual or each suction belt 11; 12; 21; 22; 31; 32 assigned two or three independently switchable vacuum areas 16. The vacuum regions 16 can be designed as chambers, with each of the chambers being able to be assigned a switchable valve, with which the respective chamber can be alternately connected to a vacuum source or separated from the vacuum source as required.

Das Vakuum wird vorzugsweise über 2/3-Wegeventile geschaltet. Die Vakuumbereiche 16 einer jeweiligen Transporteinrichtung 10; 20; 30 schließen sich in Transportrichtung 06 betrachtet vorzugsweise aneinander an.The vacuum is preferably switched via 2/3-way valves. The vacuum areas 16 of a respective transport device 10; 20; 30 preferably adjoin one another, viewed in the direction of transport 06.

Wenn bei der Aktion einer Transporteinrichtung 10; 20; 30 mit den flächenförmigen Blechtafeln die letzte flächenförmige Blechtafel dieselbe Transporteinrichtung 30; 10; 20 noch überlappen kann, also wenn mehrere flächenförmige Blechtafen im Bereich einer jeweiligen Transporteinrichtung 30; 10; 20 sind, muss das Vakuum in mehreren Bereichen innerhalb einer Transporteinrichtung 30; 10; 20 getrennt gesteuert werden. Um ein Ablösen der flächenförmigen Blechtafeln beim Deaktivieren des Vakuums zu erleichtern, kann leichter Überdruck auf das System, insbesondere die Vakuumbereiche 16 gegeben werden. Dann schaltet das Ventil zwischen Vakuum und leichtem Überdruck.If in the action of a transport device 10; 20; 30 with the flat metal sheets the last flat metal sheet the same transport device 30; 10; 20 can still overlap, ie if several sheet metal panels in the area of a respective transport device 30; 10; 20 are, the vacuum must be in several areas within a transport device 30; 10; 20 can be controlled separately. In order to make it easier to detach the sheet metal panels when the vacuum is deactivated, a slight excess pressure can be applied to the system, in particular to the vacuum areas 16 . The valve then switches between vacuum and slight overpressure.

Insbesondere kann die erste Transporteinrichtung 10 und die zweite Transporteinrichtung 20 und eine weitere Transporteinrichtung 30 jeweils zwei parallel umlaufende Saugriemen 11; 12; 21; 22; 31; 32 umfassen und die Spurweite der Saugriemen 11; 12 der ersten Transporteinrichtung 10 größer sein, als die Spurweite der Saugriemen 21; 22; 31; 32 der zweiten Transporteinrichtung 20 und/oder der weiteren Transporteinrichtung 30.In particular, the first transport device 10 and the second transport device 20 and a further transport device 30 can each have two suction belts 11; 12; 21; 22; 31; 32 include and the track width of the suction belt 11; 12 of the first transport device 10 to be greater than the track width of the suction belt 21; 22; 31; 32 of the second transport device 20 and/or the further transport device 30.

Die unterschiedliche Spurweiten der Saugriemen 11; 12; 21; 22; 31; 32 der Transporteinrichtungen 10; 20; 30 überlappen sich in Transportrichtung 06 betrachtet. Die Überlappung liegt vorzugsweise im Bereich von 10 Prozent der Erstreckung der jeweiligen der Saugriemen 11; 12; 21; 22; 31; 32 in Transportrichtung 06.The different gauges of the suction belt 11; 12; 21; 22; 31; 32 of the transport devices 10; 20; 30 overlap viewed in the transport direction 06. The overlap is preferably in the range of 10 percent of the extent of the respective suction belts 11; 12; 21; 22; 31; 32 in transport direction 06.

Die Transportmittel 11; 12; 21; 22; 31; 32, insbesondere die Saugriemen 11; 12; 21; 22; 31; 32 werden paarweise von Transportmittelantrieben 19; 27; 33 umlaufend angetrieben. Vorzugsweise weist jede Transporteinrichtung 10; 20; 30 einen von den anderen Transportmittelantrieben 19; 27, 33 unabhängigen Transportmittelantrieb 19; 27; 33 auf. Die Saugriemen 11; 12; 21; 22; 31; 32 eines Riemenpaares einer Transporteinrichtung 10; 20; 30 können auch über eine gemeinsame Antriebswelle durch einen als Servomotor ausgebildeten Transportmittelantrieb 19; 27; 33 angetrieben werden. Vorzugsweise sind die Saugriemen 21; 22; 31; 32 der zweiten und der weiteren Transporteinrichtung 20; 30 durch die jeweiligen Transportmittelantriebe 27; 33 zum Transport von flächenförmigen Blechtafeln in der Transportrichtung 06 mit variabler Geschwindigkeit antreibbar. Insbesondere weist die zweite Transporteinrichtung 20 beschleunigbare und/oder verzögerbare Transportmittel 21; 22 in Form von Saugriemen 21; 22 auf. Das heißt, dass die Saugriemen 21; 22 mit einer Geschwindigkeit antreibbar sind, die gleich, größer oder kleiner als eine Transportgeschwindigkeit der Bearbeitungseinheit ist.The means of transport 11; 12; 21; 22; 31; 32, in particular the suction belts 11; 12; 21; 22; 31; 32 are paired by means of transport drives 19; 27; 33 revolving driven. Preferably, each transport device 10; 20; 30 one of the other transport drives 19; 27, 33 independent means of transport drive 19; 27; 33 on. The suction belt 11; 12; 21; 22; 31; 32 of a pair of belts of a transport device 10; 20; 30 can also have a common drive shaft by a transport means drive designed as a servo motor 19; 27; 33 are driven. Preferably, the suction belts 21; 22; 31; 32 of the second and the further transport device 20; 30 by the respective means of transport drives 27; 33 can be driven at variable speeds in the direction of transport 06 for transporting sheet metal panels. In particular, the second transport device 20 has transport means 21 that can be accelerated and/or decelerated. 22 in the form of suction belts 21; 22 on. This means that the suction belts 21; 22 can be driven at a speed that is equal to, greater than or less than a transport speed of the processing unit.

Die erste Transporteinrichtung 10 ist zur Realisierung einer Schräglagenkorrektur ausgebildet. Dazu ist die erste Transporteinrichtung 10 um eine senkrecht zur Transportebene verlaufende Achse drehbar, sowie unter Verlagerung der Achse quer zur Transportrichtung 06 verschiebbar gelagert. Die drehbare Lagerung der ersten Transporteinrichtung 10 kann durch die Ausbildung einer Lagerstelle, zum Beispiel eines Drehtellers, mit einem rotativen Freiheitsgrad realisiert sein. Die drehbare Lagerung ist vorzugsweise zentral in Bezug auf die erste Transporteinrichtung 10 ausgebildet. Die erste Transporteinrichtung 10 weist zudem einen Antrieb 15 auf, mit dem die erste Transporteinrichtung 10 um eine durch die Lagerstelle verlaufende Achse drehbar ist. Die Achse verläuft vorzugsweise senkrecht zur Transportebene. Der Antrieb 15 kann durch einen elektromechanischen Zylinder 15 gebildet sein, der über einen Hebel auf die erste Transporteinrichtung 10 oder deren Teile einwirkt.The first transport device 10 is designed to implement a skew correction. For this purpose, the first transport device 10 is perpendicular to the Axis running in the transport plane can be rotated and slidably mounted transversely to the direction of transport 06 with displacement of the axis. The rotatable mounting of the first transport device 10 can be implemented by forming a bearing point, for example a turntable, with a rotational degree of freedom. The rotatable bearing is preferably formed centrally in relation to the first transport device 10 . The first transport device 10 also has a drive 15 with which the first transport device 10 can be rotated about an axis running through the bearing point. The axis preferably runs perpendicular to the transport plane. The drive 15 can be formed by an electromechanical cylinder 15 which acts on the first transport device 10 or parts thereof via a lever.

Neben der verdrehbaren Lagerung über die drehbare Lagerstelle ist die erste Transporteinrichtung 10 auch quer zur Transportrichtung 06 verschiebbar gelagert. Dazu weist die erste Transporteinrichtung 10 vorzugsweise eine Linearführung 14 auf. Die erste Transporteinrichtung 10 umfasst zudem einen Antrieb 13, mit dem die Verschiebung der ersten Transporteinrichtung 10 quer zur Transportrichtung 06 über die Linearführung 14 bewirkt werden kann. Die Antriebe 13; 15 sind unabhängig voneinander ansteuerbar.In addition to the rotatable mounting via the rotatable bearing point, the first transport device 10 is also mounted so that it can be displaced transversely to the transport direction 06. For this purpose, the first transport device 10 preferably has a linear guide 14 . The first transport device 10 also includes a drive 13, with which the first transport device 10 can be displaced transversely to the transport direction 06 via the linear guide 14. The drives 13; 15 can be controlled independently of one another.

Die zweite Transporteinrichtung 20 ist zur Realisierung einer Seitenlagenkorrektur ausgebildet und dazu vorzugsweise ausschließlich quer zur Transportrichtung 06 verschiebbar gelagert.The second transport device 20 is designed to implement a lateral position correction and is preferably mounted so that it can be displaced only transversely to the transport direction 06.

Der konstruktive Aufbau der Lagermittel und Antriebsmittel zur Realisierung der Verschiebbarkeit quer zur Transportrichtung 06 ist bei der ersten und der zweiten Transporteinrichtung 10; 20 vorzugsweise identisch.The structural design of the bearing means and drive means for realizing the displaceability transversely to the transport direction 06 is the same for the first and the second transport device 10; 20 preferably identical.

Dem entsprechend weist die zweite Transporteinrichtung 20 eine Linearführung 24 und einen Antrieb 23 auf, mit dem die zweite Transporteinrichtung 20 auf der Linearführung 24 quer zur Transportrichtung 06 verschiebbar ist.Correspondingly, the second transport device 20 has a linear guide 24 and a drive 23, with which the second transport device 20 can be displaced on the linear guide 24 transversely to the transport direction 06.

Im Unterschied zur ersten und zweiten Transporteinrichtung 10; 20 ist die weitere Transporteinrichtung 30 starr im Gestell gelagert. Die Antriebe 13; 23 zur Querverschiebung können als Servomotoren 13; 23 ausgebildet sein.In contrast to the first and second transport device 10; 20, the further transport device 30 is mounted rigidly in the frame. The drives 13; 23 for transverse displacement as servomotors 13; 23 be trained.

In Bezug auf die Lagerung der einzelnen Transporteinrichtungen 10; 20; 30 insbesondere in Bezug auf deren Verlagerbarkeit werden die Transporteinrichtungen 10; 20; 30 jeweils als Einheiten mit jeweiligen Transportmittelantrieben 19; 27; 33 aufgefasst. Mit anderen Worten ist in den Fällen von Verlagerbarkeit einer Transporteinrichtung 10; 20 auch immer der zugehörige Transportmittelantrieb 19; 27 verlagerbar.With regard to the storage of the individual transport devices 10; 20; 30, in particular with regard to their relocatability, the transport devices 10; 20; 30 each as units with respective means of transport drives 19; 27; 33 taken. In other words, in cases where a transport device 10; 20 also always the associated means of transport drive 19; 27 relocatable.

Vorzugsweise sind alle Transporteinrichtungen 10; 20; 30 auf einem gemeinsamen Gestell montiert. Das Gestell ist fest mit der Bearbeitungseinheit, zum Beispiel einer Lackiermaschine verbunden.Preferably, all transport devices 10; 20; 30 mounted on a common frame. The frame is firmly connected to the processing unit, for example a painting machine.

Zur Erfassung der Lagen der transportierten flächenförmigen Blechtafeln sind vorzugsweise erste, zweite und dritte Sensoren 41; 42; 43 ausgebildet und im Bereich der Transporteinrichtungen 10; 20; 30 angeordnet.First, second and third sensors 41; 42; 43 formed and in the area of the transport devices 10; 20; 30 arranged.

Vorzugsweise sind in Transportrichtung 06 vor der ersten Transporteinrichtung 10 und/oder im Bereich der ersten Transporteinrichtung 10 und/oder im Bereich einer weiteren Transporteinrichtung 30 erste Sensoren 41 zur Erfassung der Schräglage einer jeweiligen flächenförmigen Blechtafel angeordnet. Insbesondere können erste Sensoren 41 als zwei quer zur Transportrichtung 06 voneinander beabstandet angeordnete Laserlichtschranken oder Reflexionslaserlichtschranken ausgebildet sein.First sensors 41 for detecting the inclined position of a respective flat sheet metal panel are preferably arranged in transport direction 06 upstream of the first transport device 10 and/or in the area of the first transport device 10 and/or in the area of a further transport device 30. In particular, first sensors 41 can be embodied as two laser light barriers or reflection laser light barriers arranged spaced apart from one another transversely to transport direction 06 .

Die zwei ersten Sensoren 41 sind vorzugsweise sehr schnell sensierend ausgebildet und in Transportrichtung 06 auf gleicher Höhe und quer zur Transportrichtung 06 in einem definierten Abstand angeordnet. Der Abstand beträgt vorzugsweise 620 mm. Mit den ersten Sensoren 41 wird über die Zeitdifferenz der Auslösung/Sensierung an der Vorderkante der jeweils transportierten flächenförmigen Blechtafel der Schrägwinkel der jeweiligen flächenförmigen Blechtafel gemessen.The first two sensors 41 are preferably designed to sense very quickly and are arranged at the same height in the direction of transport 06 and at a defined distance transversely to the direction of transport 06. The distance is preferably 620 mm. With the First sensors 41 are used to measure the oblique angle of the respective flat metal sheet via the time difference between triggering/sensing at the front edge of the flat metal sheet being transported.

Im Bereich der ersten oder der zweiten Transporteinrichtung 10; 20 kann mindestens ein zweiter Sensor 42 zur Erfassung der Seitenlage einer jeweiligen flächenförmigen Blechtafel angeordnet sein. Vorzugsweise sind zwei zweite Sensoren 42 ausgebildet und jeweils einem der beiden Seitenbereiche des Transportweges zugeordnet. Mit der Anordnung von zwei zweiten Sensoren 42 kann wahlweise eine der beiden Seitenkanten der jeweiligen flächenförmigen Blechtafel sensiert werden. Der oder alle zweiten Sensoren 42 können als sich quer zur Transportrichtung 06 erstreckende oder als quer zur Transportrichtung 06 verschiebbare Sensoren 42 ausgebildet sein. Vorteilhaft ist die Verwendung von Zeilensensoren oder Laserzeilensensoren.In the area of the first or the second transport device 10; 20, at least one second sensor 42 can be arranged to detect the lateral position of a respective flat metal sheet. Two second sensors 42 are preferably formed and are each assigned to one of the two side areas of the transport path. With the arrangement of two second sensors 42, one of the two side edges of the respective flat sheet metal panel can be sensed. The or all of the second sensors 42 can be embodied as sensors 42 that extend transversely to the direction of transport 06 or can be displaced transversely to the direction of transport 06. The use of line sensors or laser line sensors is advantageous.

Im Bereich der ersten oder zweiten oder der weiteren Transporteinrichtung 10; 20; 30 kann mindestens ein dritter Sensor 43 zur Erfassung der Längslage einer jeweiligen flächenförmigen Blechtafel angeordnet sein. Der mindestens eine dritte Sensor 43 ist vorzugsweise als Laserlichtschranke ausgebildet.In the area of the first or second or further transport device 10; 20; 30, at least one third sensor 43 can be arranged to detect the longitudinal position of a respective flat metal sheet. The at least one third sensor 43 is preferably designed as a laser light barrier.

Neben den beschrieben Sensoren 41; 42; 43 zur Lageerfassung können zusätzlich Sensoren zur Tafellaufkontrolle und zum Messen des Vakuumlevels vorhanden sein. Es versteht sich von selbst, dass alle Bewegungen und Lagekorrekturen in Abstimmung zu einem jeweiligen Systemwinkel zum Beispiel der Bearbeitungseinheit vorgenommen werden müssen. Dieser Systemwinkel kann der Transportvorrichtung 01, insbesondere deren Steuerung in Form einer elektronischen Leitachse zugeführt werden. Ebenso kann ein Winkellagesensor zur Erfassung des Systemwinkels vorgesehen sein.In addition to the described sensors 41; 42; 43 for position detection, there can also be sensors for checking the sheet movement and for measuring the vacuum level. It goes without saying that all movements and position corrections must be made in coordination with a respective system angle, for example of the processing unit. This system angle can be fed to the transport device 01, in particular to its control in the form of an electronic master axis. An angular position sensor can also be provided for detecting the system angle.

Die Transportvorrichtung 01 kann zur Durchführung eines Verfahrens verwendet werden, das nachfolgend beschrieben wird. Das Verfahren ist nicht auf die Verwendung der beschriebenen Transportvorrichtung 01 beschränkt.The transport device 01 can be used to carry out a method that is described below. The procedure is not limited to the use of the described transport device 01 limited.

Im Zusammenhang mit der Beschreibung der Erfindung werden die Begriffe Ausrichtung der Kante oder Ausrichtung der Lage synonym zur Korrektur der Kantenlage oder Korrektur der Lage verstanden.In connection with the description of the invention, the terms alignment of the edge or alignment of the position are understood synonymously with correction of the edge position or correction of the position.

Bei dem Verfahren zum positionsgenauen Zuführen von flächenförmigen Blechtafeln zu einem Bearbeitungsprozess in einer Transportebene und einer Transportrichtung 06, insbesondere zum positionsgenauen Zuführen von Blechtafeln zu einem Druck- oder Lackierwerk einer Blech-Beschichtungsmaschine oder dergleichen, werden wobei die flächenförmigen Blechtafeln in Hintereinanderanordnung in liegender Position transportiert und während des Transports ausgerichtet werden.In the method for feeding sheet metal panels with precise positioning to a machining process in a transport plane and a transport direction 06, in particular for feeding sheet metal panels with precise positioning to a printing or coating unit of a sheet metal coating machine or the like, the flat sheet metal panels are transported in a horizontal position arranged one behind the other and aligned during transport.

Zur Schräglagenkorrektur wird die Schräglage der jeweiligen flächenförmigen Blechtafel sensiert und eine erste Transporteinrichtung 10 während des Transports der von der ersten Transporteinrichtung 10 gehaltenen flächenförmigen Blechtafel in Abhängigkeit der sensierten Schräglage um eine senkrecht zur Transportebene verlaufende Achse gedreht und quer zur Transportrichtung 06 verschoben.To correct the inclined position, the inclined position of the respective flat metal sheet is sensed and a first transport device 10 is rotated during the transport of the flat metal plate held by the first transport device 10, depending on the sensed inclined position, about an axis running perpendicular to the transport plane and displaced transversely to the transport direction 06.

Vorzugsweise wird die erste Transporteinrichtung 10 um einen Weg quer zur Transportrichtung 06 verschoben, der der aus der Drehung der ersten Transporteinrichtung 10 während des Transports einer jeweiligen flächenförmigen Blechtafel resultierenden Verlagerung der jeweiligen flächenförmigen Blechtafel quer zu Transportrichtung 06 entspricht.The first transport device 10 is preferably displaced transversely to the transport direction 06 by a distance that corresponds to the displacement of the respective flat metal sheet transverse to the transport direction 06 resulting from the rotation of the first transport device 10 during the transport of a respective flat metal sheet.

Durch die Verschiebung wird ein Seitenlagenfehler korrigiert, der ausschließlich aus der Drehung und dem überlagertem Weitertransport einer jeweiligen flächenförmigen Blechtafel zum Beispiel durch die Saugriemen 11, 12 während der Verdrehung resultiert.The shift corrects a lateral position error that results exclusively from the rotation and the superimposed further transport of a respective flat metal sheet, for example by the suction belts 11, 12 during the twisting.

Mit anderen Worten fördert die erste Transporteinrichtung 10 die jeweilige flächenförmigen Blechtafel fallbezogen etwas schräg, was durch ein Verschieben der ersten Transporteinheit 10 quer zur Transportrichtung 06 korrigiert wird. Die Geschwindigkeit der Querbewegung ist dabei abhängig vom Verdrehwinkel. Die resultierende Förderrichtung der jeweiligen flächenförmigen Blechtafel ist senkrecht zu Bearbeitungsspalt, insbesondere Lackspalt, einer Bearbeitungseinheit.In other words, the first transport device 10 conveys the respective flat metal sheet at a slight angle, depending on the case, which is corrected by moving the first transport unit 10 transversely to the transport direction 06. The speed of the transverse movement is dependent on the twisting angle. The resulting conveying direction of the respective flat metal sheet is perpendicular to the processing gap, in particular the lacquer gap, of a processing unit.

Die Verschiebung der ersten Transporteinheit 10 quer zur Transportrichtung 06 erfolgt vorzugsweise in Abhängigkeit der Drehauslenkung von Transporteinheit 10. Die Geschwindigkeit der Querbewegung hängt linear am Winkel der Drehbewegung.The displacement of the first transport unit 10 transversely to the transport direction 06 preferably takes place as a function of the rotary deflection of the transport unit 10. The speed of the transverse movement depends linearly on the angle of the rotary movement.

Zur Seitenlagenkorrektur wird die Seitenlage der jeweiligen flächenförmigen Blechtafel sensiert und eine zweite Transporteinrichtung 20 während des Transports der von der zweiten Transporteinrichtung 20 gehaltenen flächenförmigen Blechtafel quer zur Transportrichtung 06 verschoben.To correct the lateral position, the lateral position of the respective flat metal sheet is sensed and a second transport device 20 is displaced transversely to the transport direction 06 during the transport of the flat metal sheet held by the second transport device 20 .

Grundsätzlich kann die Seitenlagenkorrektur vor oder nach der Schräglagenkorrektur erfolgen, so dass die zweite Transporteinheit 20 auch vor der ersten Transporteinheit 10 angeordnet sein könnte.In principle, the lateral position correction can take place before or after the skew correction, so that the second transport unit 20 could also be arranged in front of the first transport unit 10 .

Zur Korrektur der Längslage einer jeweiligen flächenförmigen Blechtafel können zum Beispiel die von der zweiten Transporteinrichtung 20 umfassten umlaufende Transportmittel 21; 22 in Abhängigkeit der sensierten Längslage einer jeweiligen flächenförmigen Blechtafel zeitweilig mit einer gegenüber der Transportgeschwindigkeit einer der zweiten Transporteinrichtung 20 nachgelagerten Bearbeitungseinheit erhöhten oder verminderten Geschwindigkeit angetrieben werden.To correct the longitudinal position of a respective flat metal sheet, for example, the circulating transport means 21; 22 can be driven at times, depending on the sensed longitudinal position of a respective flat metal sheet, at a speed that is increased or reduced in relation to the transport speed of a processing unit downstream of the second transport device 20 .

Die Korrektur der Längslage einer jeweiligen flächenförmigen Blechtafel kann auch mit der weiteren Transporteinrichtung 30 durchgeführt werden. Ebenso ist eine zweitstufige Korrektur der Längslage unter Verwendung von weiterer und zweiter Transporteinrichtung 30; 20 möglich. In jedem Fall muss die Übergabe zum Bearbeitungsprozess mit einer Transportgeschwindigkeit des Bearbeitungsprozesses beziehungsweise der Bearbeitungsmaschine erfolgen.The correction of the longitudinal position of a respective flat metal sheet can also be carried out with the additional transport device 30 . Similarly, a two-tier Correction of the longitudinal position using further and second transport device 30; 20 possible. In any case, the transfer to the machining process must take place at a transport speed of the machining process or the machining machine.

Wenn ein der Transportvorrichtung 01 vorgeordneter Anleger ausgebildet ist, der bei Bereitstellung von flächenförmigen Blechtafeln zwischen den Vorderkanten aufeinander folgender flächenförmigen Blechtafeln größere Abstände erzeugt als bei der Verarbeitung der flächenförmigen Blechtafeln durch eine der Transportvorrichtung 01 nachgelagerte Bearbeitungseinheit erforderlich ist, können die flächenförmigen Blechtafeln vorzugsweise auf der weiteren und/oder der zweiten Transporteinrichtung 30; 20 abgebremst werden. Das kann in Überlagerung zur Längskorrektur erfolgen.If a feeder is configured upstream of transport device 01, which, when sheet metal panels are provided, creates larger distances between the front edges of successive sheet metal panels than is required when processing the sheet metal panels by a processing unit downstream of transport device 01, the sheet metal panels can preferably be fed on the further and/or the second transport device 30; 20 are braked. This can be done in superimposition to the longitudinal correction.

Dieser Zustand wird auch als Fahren des Anlegers mit einem andern Format als die Bearbeitungseinheit bezeichnet.This condition is also referred to as driving the feeder with a different format than the processing unit.

Vorzugsweise werden die Seitenlage und die Längslage einer jeweiligen flächenförmigen Blechtafel durch Verschieben der zweiten Transporteinrichtung 20 und Verändern von der Transportgeschwindigkeit gleichzeitig korrigiert.Preferably, the lateral position and the longitudinal position of a respective flat metal sheet are corrected simultaneously by shifting the second transport device 20 and changing the transport speed.

Die flächenförmigen Blechtafeln werden während des Transports von der ersten Transporteinrichtung 10 und/oder der zweiten Transporteinrichtung 20 oder jeder Transporteinrichtung 10; 20; 30 durch Vakuum gehalten.The flat sheet metal panels are during the transport of the first transport device 10 and / or the second transport device 20 or each transport device 10; 20; 30 held by vacuum.

Bei der Übergabe von flächenförmigen Blechtafeln an aufeinander folgende Transporteinrichtungen 30; 10; 20 wird für eine jeweilig transportiertes flächenförmigen Blechtafel ein Vakuum an mindestens einem umlaufenden Transportmittel 31; 32; 11; 12 einer in Transportrichtung 06 vorgelagerten Transporteinrichtung 10, 30 deaktiviert, wenn ein Vakuum an mindestens einem umlaufenden Transportmittel 11; 12; 21; 22 einer in Transportrichtung 06 nachgelagerten Transporteinrichtung 10; 20 die jeweilige flächenförmige Blechtafel erfasst hat.When transferring sheet metal panels to successive transport devices 30; 10; 20, a vacuum is applied to at least one circulating transport means 31; 32; 11; 12 of a transport device 10, 30 upstream in the transport direction 06 is deactivated when a vacuum is applied to at least one circulating transport means 11; 12; 21; 22 one in Transport device 10 downstream in transport direction 06; 20 has captured the respective planar metal sheet.

Das geschieht insbesondere bei der Übergabe der flächenförmigen Blechtafeln von der ersten Transporteinrichtung 10 an die zweite Transporteinrichtung 20 und/oder von der weiteren Transporteinrichtung 30 an die erste Transporteinrichtung 10.This happens in particular when the sheet metal panels are transferred from the first transport device 10 to the second transport device 20 and/or from the further transport device 30 to the first transport device 10.

Weisen die erste Transporteinrichtung 10 und/oder die zweite Transporteinrichtung 20 und/oder jede Transporteinrichtung 10; 20; 30 jeweils sich in Transportrichtung 06 aneinander anschließende Vakuumbereiche 16 auf, wird deren Vakuum bei der Übergabe und/oder bei der Übernahme einer jeweiligen flächenförmigen Blechtafel bereichsweise nacheinander deaktiviert oder aktiviert.If the first transport device 10 and/or the second transport device 20 and/or each transport device 10; 20; 30 vacuum areas 16 that adjoin one another in the direction of transport 06, their vacuum is successively deactivated or activated in areas during the transfer and/or acceptance of a respective flat metal sheet.

Bei der Aktivierung und Deaktivierung des Vakuums der Transporteinrichtungen 30; 10; 20 beziehungsweise der Aktivierung und Deaktivierung der Vakuumbereiche 16 der Transporteinrichtungen 30; 10; 20 muss eine durchgängige Fixierung der jeweiligen flächenförmigen Blechtafel gewährleistet sein. Der Transport der flächenförmigen Blechtafeln erfolgt in keinem Wegbereich undefiniert.When activating and deactivating the vacuum of the transport devices 30; 10; 20 or the activation and deactivation of the vacuum areas 16 of the transport devices 30; 10; 20, a continuous fixation of the respective sheet metal panel must be guaranteed. The transport of the sheet metal panels is not undefined in any path area.

Sobald eine Transporteinrichtung 30; 10; 20 eine jeweilige flächenförmige Blechtafel nach Deaktivierung des Vakuums freigegeben hat, wird die Lage und Umlaufgeschwindigkeit der Saugriemen 31; 32; 11; 12; 21; 22 wieder rückgestellt. Dabei kann sich die jeweilige flächenförmige Blechtafel noch im Bereich der jeweiligen Transporteinrichtung 30; 10; 20 befinden.As soon as a transport device 30; 10; 20 has released a respective sheet metal panel after deactivation of the vacuum, the position and rotational speed of the suction belts 31; 32; 11; 12; 21; 22 reset again. The respective flat metal sheet can still be in the area of the respective transport device 30; 10; 20 located.

Vorzugsweise wird die Längslage der jeweiligen flächenförmigen Blechtafel während des Transportes der von der zweiten Transporteinrichtung 20 gehaltenen jeweiligen flächenförmigen Blechtafel sensiert, wobei unter Sensieren ganz allgemein das Erfassen mit einem Sensor 41; 42; 43 verstanden wird.Preferably, the longitudinal position of the respective sheet-like metal sheet is sensed during the transport of the respective sheet-like sheet metal panel held by the second transport device 20, with sensing quite generally being the detection with a sensor 41; 42; 43 is understood.

Der zum Sensieren der Längslage der jeweiligen flächenförmigen Blechtafel vorgesehene dritte Sensor 43 sitzt vorzugsweise mittig und misst die Lage der Vorderkante indem er die Längsdifferenz, das heißt die Abweichung zum Systemwinkel feststellt.The third sensor 43 provided for sensing the longitudinal position of the respective flat sheet metal panel is preferably located in the middle and measures the position of the front edge by determining the longitudinal difference, ie the deviation from the system angle.

Vorzugsweise wird die Seitenlage der jeweiligen flächenförmigen Blechtafel während des Transportes der von der zweiten Transporteinrichtung 20 gehaltenen jeweiligen flächenförmigen Blechtafel erfasst und die zweite Transporteinrichtung 20 quer zur Transportrichtung 06 in Abhängigkeit der sensierten Seitenlage verschoben.Preferably, the lateral position of the respective flat metal sheet is detected during the transport of the respective flat metal sheet held by the second transport device 20 and the second transport device 20 is displaced transversely to the transport direction 06 depending on the lateral position sensed.

Weiter bevorzugt werden die Seitenlage und die Längslage gleichzeitig sensiert.More preferably, the lateral position and the longitudinal position are sensed simultaneously.

Die Schräglage der jeweiligen flächenförmigen Blechtafel wird insbesondere während des Transportes der von der ersten Transporteinrichtung 10 gehaltenen flächenförmigen Blechtafel oder während des Transports der von einer der ersten Transporteinrichtung 10 vorgeordneten weiteren Transporteinrichtung 30 gehaltenen flächenförmigen Blechtafel sensiert.The inclined position of the respective sheet metal plate is sensed in particular during the transport of the sheet metal plate held by the first transport device 10 or during the transport of the sheet metal plate held by another transport device 30 arranged upstream of the first transport device 10 .

Nach einem bevorzugten Verfahren wird die flächenförmigen Blechtafel mittels Vakuum angesaugt und auf einer ersten Transportstrecke entlang der ersten Transporteinrichtung 10 gehalten. Im Bereich vor der ersten Transportstrecke oder im Bereich der ersten Transportstrecke erfolgt eine Sensierung einer Schräglage der flächenförmigen Blechtafel.According to a preferred method, the flat metal sheet is sucked in by means of a vacuum and held on a first transport section along the first transport device 10 . In the area in front of the first transport section or in the area of the first transport section, an inclined position of the flat metal sheet is sensed.

Anschließend werden im Bereich der ersten Transportstrecke die Drehbewegung zur Schräglagenkorrektur sowie eine Verschiebebewegung quer zur Transportrichtung 06 durchgeführt.Then, in the area of the first transport section, the rotary movement for the correction of the skew and a shifting movement transverse to the transport direction 06 are carried out.

Danach wird die flächenförmige Blechtafel von der ersten Transportstrecke 10 auf eine zweite Transportstrecke entlang der zweiten Transporteinrichtung 20 überführt und im Bereich der ersten Transportstrecke das Vakuum abgebaut und im Bereich der zweiten Transportstrecke ein Vakuum zum Halten der flächenförmigen Blechtafel aufgebaut.Thereafter, the sheet metal plate from the first transport path 10 on a transferred to the second transport section along the second transport device 20 and the vacuum is reduced in the area of the first transport section and a vacuum is built up in the area of the second transport section to hold the sheet-like sheet metal panel.

Anschließend erfolgt die Ermittlung der Seitenlage und der Längslage der flächenförmigen Blechtafel.The determination of the lateral position and the longitudinal position of the two-dimensional metal sheet is then carried out.

Im Falle einer notwendigen Korrektur der Seiten- und/oder Längslage wird die Seitenbewegung im Bereich der zweiten Transportstrecke durchgeführt und/oder die Transportgeschwindigkeit im Bereich der zweiten Transportstrecke zeitweise verändert. Daran schließt sich die Übergabe zum Bearbeitungsprozess mit einer Transportgeschwindigkeit des Bearbeitungsprozesses an.In the case of a necessary correction of the lateral and/or longitudinal position, the lateral movement is carried out in the area of the second transport section and/or the transport speed in the area of the second transport section is temporarily changed. This is followed by the transfer to the machining process with a transport speed of the machining process.

BezugszeichenlisteReference List

0101
Transportvorrichtungtransport device
0202
--
0303
--
0404
--
0505
--
0606
Transportrichtungtransport direction
0707
--
0808
--
0909
--
1010
Transporteinrichtung, ersteTransport device, first
1111
Transportmittel, Saugriemen, umlaufend (10)Means of transport, suction belts, circulating (10)
1212
Transportmittel, Saugriemen, umlaufend (10)Means of transport, suction belts, circulating (10)
1313
Antrieb, Servomotordrive, servo motor
1414
Linearführunglinear guide
1515
Antrieb, Zylinder, elektromechanischDrive, cylinder, electromechanical
1616
Vakuumbereichvacuum area
1717
Blasluftkasten (10; 30)Air blast box (10; 30)
1818
Luftaustrittsöffnung, VenturidüsenAir outlet opening, Venturi nozzles
1919
Transportmittelantriebmeans of transport drive
2020
Transporteinrichtung, zweiteTransport device, second
2121
Transportmittel, Saugriemen, umlaufend (20)Means of transport, suction belts, circulating (20)
2222
Transportmittel, Saugriemen, umlaufend (20)Means of transport, suction belts, circulating (20)
2323
Antrieb, Servomotordrive, servo motor
2424
Linearführunglinear guide
2525
Blasluftkasten (20)air blast box (20)
2626
Luftaustrittsöffnung, VenturidüsenAir outlet opening, Venturi nozzles
2727
Transportmittelantriebmeans of transport drive
2828
--
2929
--
3030
Transporteinrichtung, weiteretransport device, others
3131
Transportmittel, Saugriemen, umlaufend (30)Means of transport, suction belts, circulating (30)
3232
Transportmittel, Saugriemen, umlaufend (30)Means of transport, suction belts, circulating (30)
3333
Transportmittelantriebmeans of transport drive
3434
Ventilatorfan
3535
--
3636
--
3737
--
3838
--
3939
--
4040
--
4141
Sensor, ersterSensor, first
4242
Sensor, zweitersensor, second
4343
Sensor, drittersensor, third

Claims (15)

  1. Method for feeding flat sheet-metal panels to a printing unit or coating unit of a sheet-metal coating machine in a positionally accurate manner, wherein the sheet-metal panels are transported one behind the other in a horizontal position and are aligned as they are being transported, wherein, in order to correct an inclination, the inclination of the respective flat sheet-metal panel is sensed and a first transport device (10), as the flat sheet-metal panel held by the first transport device (10) is being transported, is rotated about an axis, which extends perpendicular to the transport plane, as a function of the sensed inclination and is displaced transversely to the transport direction (06), and, in order to correct the lateral position, the lateral position of the respective flat sheet-metal panel is sensed and a second transport device (20), as the flat sheet-metal panel held by the second transport device (20) is being transported, is displaced transversely to the transport direction (06), characterized in that the first transport device (10) is displaced transversely to the transport direction (06) by a distance corresponding to the displacement of a respective flat sheet-metal panel transversely to the transport direction (06) that results from the rotation of the first transport device (10) as the respective flat sheet-metal panel is being transported.
  2. Method according to claim 1, characterized in that the inclination of the respective flat sheet-metal panel is sensed as the flat sheet-metal panel held by the first transport device (10) is being transported or as the flat sheet-metal panel held by a further transport device (30), which is arranged upstream of the first transport device (10), is being transported.
  3. Method according to claim 1 or 2, characterized in that the lateral position of the respective flat sheet-metal panel is detected as the respective flat sheet-metal panel held by the second transport device (20) is being transported, and the second transport device (20) is displaced transversely to the transport direction (06) as a function of the sensed lateral position.
  4. Method according to claim 1, 2 or 3, characterized in that the longitudinal position of the respective sheet-metal panel is sensed as the respective sheet-metal panel held by the second transport device (20) is being transported, and, as a function of the sensed longitudinal position, circulating transport means (21; 22) comprised by the second transport device (20) are temporarily driven at a speed that is elevated or reduced in comparison to the transport speed for handing over the flat sheet-metal panels to a machining unit arranged downstream of the second transport device (20).
  5. Method according to claim 1, 2, 3 or 4, characterized in that the lateral position and the longitudinal position are sensed simultaneously, and/or the lateral position and the longitudinal position are corrected simultaneously by displacing the second transport device (20) and varying the transport speed.
  6. Method according to claim 1, 2, 3, 4 or 5, characterized in that the first transport device (10) and/or the second transport device (20) and/or each transport device (10; 20; 30) has vacuum areas (16) which adjoin one another in the transport direction (06) and the vacuum of which is successively deactivated or activated, area by area, as a respective flat sheet-metal panel is being handed over and/or received.
  7. Method according to claim 1, 2, 3, 4, 5 or 6, characterized in that suction is applied to the flat sheet-metal panel by means of a vacuum and the panel is held on a first transport section along the first transport device (10), an inclination of the flat sheet-metal panel is sensed in the area upstream of the first transport section or in the area of the first transport section, then the rotational movement for correcting the inclination and a displacement movement transverse to the transport direction (06) take place in the area of the first transport section, then the flat sheet-metal panel is handed over from the first transport section to a second transport section along the second transport device (20), and simultaneously the vacuum is reduced in the area of the first transport section and a vacuum for holding the flat sheet-metal panel is built up in the area of the second transport section, then the lateral position and the longitudinal position of the flat sheet-metal panel are determined, and then, if the lateral position and/or longitudinal position is to be corrected, the lateral movement is carried out in the area of the second transport section and/or the transport speed is temporarily varied in the area of the second transport section, and finally the handover to the machining process takes place at a transport speed of the machining process.
  8. Apparatus for feeding flat sheet-metal panels to a printing unit or coating unit of a sheet-metal coating machine in a positionally accurate manner, wherein the flat sheet-metal panels are transported one behind the other in a horizontal position by means of a transport apparatus (01) and are aligned as they are being transported, for carrying out the method according to one or more of the preceding claims 1 to 10, wherein the transport apparatus (01) has a first transport device (10) for correcting an inclination and a second transport device (20) for correcting a lateral position, wherein the first transport device (10) is rotatable about an axis, which extends perpendicular to the transport plane, and is mounted in such a way as to be displaceable transversely to the transport direction (06) by displacing the axis, and the second transport device (20) is arranged downstream of the first transport device (10) in the transport direction (06) and is mounted in such a way as to be displaceable transversely to the transport direction (06).
  9. Apparatus according to claim 8, characterized in that a further transport device (30) is arranged upstream of the first transport device (10) as seen in the transport direction (06) .
  10. Apparatus according to claim 8 or 9, characterized in that the first transport device (10) and/or the second transport device (20) and/or a further transport device (30) each comprise, as transport means (11; 12; 21; 22; 31; 32), two suction belts (11; 12; 21; 22; 31; 32) circulating in parallel, and two or three independently switchable vacuum areas (16) are assigned to each suction belt (11; 12; 21; 22; 31; 32).
  11. Apparatus according to claim 8, 9 or 10, characterized in that the first transport device (10) and the second transport device (20) and a further transport device (30) each comprise two suction belts (11; 12; 21; 22; 31; 32) circulating in parallel, and the track gauge of the suction belts (11; 12) of the first transport device (10) is larger than the track gauge of the suction belts (21; 22; 31; 32) of the second transport device (20) and/or of the further transport device (30).
  12. Apparatus according to claim 8, 9, 10 or 11, characterized in that the first transport device (10) and/or the second transport device (20) each have a linear guide (14; 24) and a drive (13; 23) by which the respective transport device (10; 20) can be displaced on the respective linear guide (14; 24) transversely to the transport direction (06).
  13. Apparatus according to claim 8, 9, 10, 11 or 12, characterized in that the first transport device (10) has a bearing point with a rotational degree of freedom and a further drive (15) by which the first transport device (10) can be rotated about an axis that extends through the bearing point.
  14. Apparatus according to claim 8, 9, 10, 11, 12 or 13, characterized in that blast air boxes (25; 17) with Venturi nozzles (18; 26) are arranged in a stationary manner in the area of the first transport device (10) and/or the second transport device (20) and/or a further transport device (30).
  15. Apparatus according to claim 8, 9, 10, 11, 12, 13 or 14, characterized in that first sensors (41) for detecting the inclination of a respective flat sheet-metal panel are arranged upstream of the first transport device (10) in the transport direction (06) and/or in the area of the first transport device (10) and/or in the area of a further transport device (30).
EP21161483.9A 2020-04-17 2021-03-09 Method and device for positionally accurate feeding of sheet metal plates to a machining process or a machining unit Active EP3896018B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102020110509.6A DE102020110509B4 (en) 2020-04-17 2020-04-17 Method and device for feeding sheet metal panels with precise positioning to a printing or coating unit of a sheet metal coating machine

Publications (2)

Publication Number Publication Date
EP3896018A1 EP3896018A1 (en) 2021-10-20
EP3896018B1 true EP3896018B1 (en) 2022-07-13

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EP21161483.9A Active EP3896018B1 (en) 2020-04-17 2021-03-09 Method and device for positionally accurate feeding of sheet metal plates to a machining process or a machining unit

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EP (1) EP3896018B1 (en)
DE (1) DE102020110509B4 (en)
ES (1) ES2926457T3 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102021129339B3 (en) * 2021-11-11 2022-11-03 Koenig & Bauer Ag Production line for processing sheet metal
DE102021129340B3 (en) * 2021-11-11 2022-10-20 Koenig & Bauer Ag Production line for processing sheet metal

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2684975B1 (en) 1991-12-13 1994-03-11 Lucas Sa DEVICE FOR HANDLING AND ORIENTATION OF FLAT OBJECTS ARRANGED IN PACKETS.
US5984301A (en) * 1997-02-19 1999-11-16 Carruthers Equipment Co. Position adjustment conveyor
DE19814141C2 (en) 1998-03-30 2003-08-14 Ltg Holding Gmbh Method and device for the precise feeding of sheet-like goods to a machining process
DE102007031115B4 (en) 2007-06-28 2009-04-23 Kba-Metalprint Gmbh Device for positionally accurate feeding of tabular goods and corresponding method
DE102017111311A1 (en) * 2016-05-25 2017-11-30 manroland sheetfed GmbH Leading edge alignment in laying unit
DE102017012279B3 (en) 2017-11-27 2019-06-27 Koenig & Bauer Ag Sheet processing machine

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DE102020110509A1 (en) 2021-10-21
EP3896018A1 (en) 2021-10-20
ES2926457T3 (en) 2022-10-26

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