EP3974360A1 - Ligne de production pourvue de plusieurs unités machines et son procédé de fonctionnement - Google Patents

Ligne de production pourvue de plusieurs unités machines et son procédé de fonctionnement Download PDF

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Publication number
EP3974360A1
EP3974360A1 EP21177926.9A EP21177926A EP3974360A1 EP 3974360 A1 EP3974360 A1 EP 3974360A1 EP 21177926 A EP21177926 A EP 21177926A EP 3974360 A1 EP3974360 A1 EP 3974360A1
Authority
EP
European Patent Office
Prior art keywords
transport
metal
production line
machine
transported
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP21177926.9A
Other languages
German (de)
English (en)
Other versions
EP3974360B1 (fr
Inventor
Ralf Gumbel
Klaus Kirsch
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Koenig and Bauer AG
Original Assignee
Koenig and Bauer AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Koenig and Bauer AG filed Critical Koenig and Bauer AG
Publication of EP3974360A1 publication Critical patent/EP3974360A1/fr
Application granted granted Critical
Publication of EP3974360B1 publication Critical patent/EP3974360B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status 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
    • B65H29/00—Delivering or advancing articles from machines; Advancing articles to or into piles
    • B65H29/24—Delivering or advancing articles from machines; Advancing articles to or into piles by air blast or suction apparatus
    • B65H29/241—Suction devices
    • B65H29/242—Suction bands or belts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F19/00—Apparatus or machines for carrying out printing operations combined with other operations
    • B41F19/001—Apparatus or machines for carrying out printing operations combined with other operations with means for coating or laminating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F7/00—Rotary lithographic machines
    • B41F7/16—Rotary lithographic machines for printing on non-deformable material, e.g. sheet 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
    • 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
    • B65H29/00—Delivering or advancing articles from machines; Advancing articles to or into piles
    • B65H29/16—Delivering or advancing articles from machines; Advancing articles to or into piles by contact of one face only with moving tapes, bands, or chains
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H5/00—Feeding articles separated from piles; Feeding articles to machines
    • B65H5/22—Feeding articles separated from piles; Feeding articles to machines by air-blast or suction device
    • B65H5/222—Feeding articles separated from piles; Feeding articles to machines by air-blast or suction device by suction devices
    • B65H5/224—Feeding articles separated from piles; Feeding articles to machines by air-blast or suction device by suction devices by 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
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/50—Auxiliary process performed during handling process
    • B65H2301/51—Modifying a characteristic of handled material
    • B65H2301/517—Drying 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
    • B65H2404/00—Parts for transporting or guiding the handled material
    • B65H2404/20—Belts
    • B65H2404/24—Longitudinal profile
    • B65H2404/243—Longitudinal profile with portions of different thickness
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2405/00—Parts for holding the handled material
    • B65H2405/30—Other features of supports for sheets
    • B65H2405/35—Means for moving support
    • B65H2405/352—Means for moving support in closed loop
    • 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
    • B65H2406/112—Means using fluid made only for exhausting gaseous medium producing fluidised bed for handling material along preferably rectilinear path, e.g. nozzle bed for web
    • 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
    • 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
    • B65H2801/24—Post -processing devices
    • B65H2801/31—Devices located downstream of industrial printers

Definitions

  • the invention relates to a production line with several machine units according to claim 1 and a method for operating this production line according to claim 11.
  • a magnetic belt conveyor for the hanging transport of metal sheets or the like is known, with several magnet holding elements arranged one behind the other in the conveying direction and with an endless conveyor belt running past under the magnetic holding elements, with which the metal sheets or the like can be transported from a transfer point to a transfer point wherein the conveyor belt is a vacuum conveyor belt and the magnetic belt conveyor is provided with a vacuum device.
  • the EP 2 520 520 A1 is a device for the precise transport of flat workpieces, in particular material panels with low density, such as insulating panels and the like, with at least one conveyor belt running around a housing and with a vacuum device which is at least partially arranged in the housing or acts through the housing and which sucks in the workpieces and thereby presses against a transport side of the conveyor belt remote from the housing in order to hold it there in a precise position, the conveyor belt having a number of through bores which are arranged essentially in a row along its direction of movement and pass through the conveyor belt, the housing having a longitudinal, having aligned with the through holes of the conveyor belt suction slot, and wherein the housing and / or the conveyor belt are provided with on both sides of the suction slot and / or on both sides of the row of through holes arranged sealing surfaces to at on on top of the housing Conveyor belt to seal an intermediate space between the housing and the conveyor belt bordering on the one hand on the suction slot and on the other hand on the through
  • a conveyor belt for an endless conveyor with a vacuum device is known, with a sealing layer arranged on the transport side of the conveyor belt having a large number of vacuum depressions arranged one behind the other in the direction of passage of the conveyor belt, with a suction area of the vacuum depressions being large in relation to their volume, and with the vacuum depressions having suction channels accessible from the back of the conveyor.
  • a conveyor belt for printed sheets comprising troughs, in each of which projections for supporting the printed sheets and a vacuum opening are arranged.
  • DE 000P0040513DAZ discloses a continuous dryer for drying metal sheets, in which the previously printed or painted metal sheets with their unprinted or unpainted edges standing up laterally on guide rollers are individually advanced along a transport path specified by these guide rollers by means of a carrier chain and are thus advanced by one of a hot Gas-air mixture flowed through drying room are passed.
  • a transport system of a sheet metal printing machine or sheet metal painting machine is known, with at least one moving front edge stop for the contact of the front edge of a transported metal sheet, with a side alignment device for sheet metal side alignment, with a feed drum, which has at least one positioning mark for positioning the front edge of the sheet metal panel, and with a belt transport system having a plurality of belts for aligning the front edge of the sheet metal panel with the positioning mark, with the belt transport system being assigned a holding means for pressing the sheet metal panel onto the belts, the belts of the belt transport system are designed as flat belts, wherein the holding means z.
  • B. is a vacuum device or a magnetic device.
  • a conveyor device for flat material with a table top, at least one conveyor belt resting on the table top and driven in its longitudinal direction, with at least one blowing nozzle being arranged in the table top under the conveyor belt, with the at least one blowing nozzle being designed as a Bernoulli nozzle.
  • a device on a conveyor table preferably on a suction belt table, for transporting sheet material in a shingled flow of sheets from a sheet feeder to a sheet-processing machine, in particular a sheet-fed rotary printing press, with one or more conveyor belts, for example suction belts that can be charged with suction air, with the Suction belts can be driven and are guided endlessly around the conveyor table, with a blowing device which blows air under the stream of sheets outside the guide area of the conveyor belts in the area of guide areas of the conveyor table arranged laterally and parallel to the conveyor belts, with at least in the guide areas on the outside of the conveyor belts a
  • a plurality of individual ventilation openings distributed essentially over the entire surface of the guide regions is provided and a blown air supply is provided in such a way that it is for ventilation openings at least is partially coupled in such a way that the guide areas can be acted upon with blown air essentially in partial areas or over the entire area, with ventilation opening
  • the invention has for its object to provide a production line with multiple machine units and a method for operating this production line, wherein at least one of these machine units has a device for transporting has painted metal panels, with this device a wrap-around paint and consequent contamination of their transport belts is avoided.
  • the solution found also has the advantage that the respective transport device of a relevant machine unit is variable in width and is suitable for the transport of sheet metal panels of different widths without structural adjustments.
  • the width of a metal plate extends transversely to its respective transport direction.
  • metal sheets are usually applied in a production line by applying at least one pressure fluid using a sheet metal painting machine, e.g. B. to protect the respective surface of the sheet metal in question or at least one previously printed image and / or z. B. to produce a white background and / or a gloss effect in each case painted over the entire surface or part of the surface with at least one pressure fluid.
  • the pressurized fluid to be applied to at least one surface, ie to the top and/or bottom of the sheet metal panels in question, is thus each z. B. formed as a paint, wherein the application of the pressure fluid is usually subjected to a subsequent drying process.
  • the metal sheets to be processed in this way have a format e.g. B.
  • each of these metal sheets can be made of tin-plated or tin-free sheet steel Sheet steel or aluminum - thus a mass z. B. from a few hundred grams to a few kilograms, z. B. from at least 300 grams up to five kilograms or more.
  • metal sheets of this type are industrially mass-produced at a production rate of several thousand metal sheets per hour, z. B. of at least 6,000 metal sheets per hour or even 9,000 metal sheets per hour printed and / or painted.
  • metal sheets of this type which are to be transported individually at high speed through the production line, tend to have problems during transport, in particular due to friction effects in their respective transport plane and/or as a result of contamination on their respective transport path. Disturbing friction effects also occur e.g. B. excessive wear or aging of a belt transport system used for transporting the metal sheets. Each of these undesirable influences can lead to e.g. B. several individually and successively transported through the production line metal sheets unintentionally accumulate and / or jam or get caught. Metal sheets can also be turned out of their linear transport path in their respective transport level and thereby z. B. cause a collision with other metal sheets and/or a component of one of the machine units of this production line.
  • At least one free distance between successively transported metal sheets i.e. the distance between the rear edge of a first metal sheet and the front edge of the next following second metal sheet, can change, so that a so-called Synchronous point shifts, which means that in particular the leading edge position of a metal sheet shifts relative to devices arranged in different machine units of the production line.
  • Synchronous point shifts which means that in particular the leading edge position of a metal sheet shifts relative to devices arranged in different machine units of the production line.
  • Such a shift of the synchronization point can during transport of the metal sheet in question through the production line e.g. B.
  • the machine units arranged one behind the other in the production line in the direction of transport of the metal sheets to be processed – the loading station, the continuous dryer, the cooling zone that may be provided and the unloading station — are always linked to one another, not only in terms of control technology and/or functionality, but also physically, since these are also at least one traction means provided for transporting the metal sheets, e.g. B. in the form of at least one chain that preferably runs through all of these machine units.
  • the production line transports the metal sheets by means of their respective transport devices at least in sections, preferably floating as far as possible through this production line on an air cushion.
  • the metal sheets to be transported rest on only at least one transport belt, with the transport belt in question or the several transport belts arranged in particular parallel to one another being arranged in particular only in a central area of the respective transport device extending longitudinally to the transport direction of these metal sheets. Otherwise, these sheet metal panels have no direct physical contact, e.g. B. to a stationarily arranged in its transport plane plate of the relevant transport device.
  • FIG. 1 shows in a highly simplified schematic representation an example of a production line 01 for the processing of metal sheets, in which several usually structurally different from each other and each in its own frame 19; 21 ( 6 ) trained machine units are arranged one behind the other in a row.
  • these machine units are functionally linked to one another for joint execution of a production process that processes metal sheets 08, with the functional linking relating in particular to an ordered, uniform process flow. Neighboring, ie immediately following machine units have a common joint.
  • the production line 01 for processing metal sheets in the transport direction T of the metal sheets to be processed 08 ( 2 ) consecutively e.g. g.
  • a sheet metal printing machine 03 at least one sheet metal painting machine 06, at least one transport module 04, a loading station 02, a continuous dryer 17, optionally with a downstream cooling zone 18, and an unloading station 07.
  • At least two of these machine units are each designed as an independent machine unit, which means that these machine units are each designed in their own frame.
  • a generic production line 01 with a tin printing machine 03 and a tin painting machine 06 these can also be combined in a single machine unit.
  • the generic production line 01 only has a sheet metal painting machine 06 - without a sheet metal printing machine 03.
  • the machine unit designed as a continuous dryer 17 is z. B. designed as a hot air dryer.
  • At least the transport module 04 and/or the loading station 02 and/or the unloading station 07 each have at least one transport device 09 ( 3 ) for transporting the sheet metal 08.
  • a transport route through this production line 01 is z. B. linear and/or formed horizontally.
  • At least the machine units configured as a loading station 02 or as a continuous dryer 17 or as an unloading station 07 and arranged one behind the other in the direction of transport T of the metal sheets 08 to be processed are also connected to one another in the preferred embodiment by at least one common traction mechanism that runs through these machine units and is provided for the transport of the metal sheets 08 concatenated, e.g. B. by at least one circulating chain through these machine units.
  • each of these metal sheets 08 has a length L in the transport direction T intended for it and a width B transverse to this transport direction T, with a format of the respective metal sheet 08 being defined by specifying its length L times its width B. Therefore, the length L is also referred to as the format length L and the width B as the format width B.
  • FIG. 3 shows in a top view an example of one of the transport devices 09 arranged in at least two different machine units of the production line 01. 4 shows a perspective view of one of these transport devices 09, such as these. B. is arranged in the transport module 04.
  • FIG 5 shows the transport device 09 again in a plan view in an enlarged representation.
  • the transport device 09 has at least one, preferably two, transport belts 11 only in its central region M, which extends longitudinally to the transport direction T of the metal sheets 08.
  • B. is formed as a flat belt consisting in particular of a flexible material in the form of an endless loop or are.
  • the z. B. between 1 mm and 5 mm, preferably about 2 mm thick flat belts have a width B11 e.g. B. between 30 mm and 250 mm, preferably about 40 mm or 80 mm. the z. B.
  • table-shaped transport device 09 has a flat plate 12 arranged in a stationary manner in the transport plane of the metal sheets 08 ( 4 ), whose width B12 extending transversely to the transport direction T of the metal sheets 08 is at least as large as the width B of the maximum format of the metal sheets 08 to be transported with the transport device 09 narrow side z. B. over a maximum of 60%, preferably over a maximum of 30% of the width B12 of the plate 12 of this transport device 09, in particular over 10% to 20% of the width B12 of the plate 12 of the transport device 09, particularly preferably about 15% of the width B12 of the plate 12 of the transport device 09, and extends with its long side lengthways in the transport direction T of the metal sheets 08 to be transported.
  • the plate 12 of this transport device 09 has a length L12, which is preferably at least as long as the length L of the maximum format of the transport device 09 metal sheets to be transported 08.
  • a length L12 which is preferably at least as long as the length L of the maximum format of the transport device 09 metal sheets to be transported 08.
  • several, e.g. B. two transport modules 04, each with a plate 12 can be arranged directly one behind the other, with the individual lengths of the respective plates 12 adding up to the length L of the maximum format of the metal sheets 08 to be transported with the transport device 09.
  • the respective transport belt 11 of the transport device 09 is preferably arranged revolving on deflection rollers with its respective load strand along the transport plane in such a way that each load strand of the transport belt 11, ie resting on its respective transport side and on the relevant transport belt 11 z. B. also held sheet metal 08 can be transported relative to the stationary plate 12 in question along a linear transport route, with this transport route z. B. at least over the length L12 of the transport device 09.
  • the holding force required to hold a metal sheet 08 resting on the transport belt 11 in question is achieved, e.g. B. by a suction, the required suck z. B.
  • the suction box is generated by a suction box arranged below the plate 12 of the transport device 09 in conjunction with a suction pump connected to it.
  • the suction pump can preferably be switched on and/or switched off as required.
  • magnetic holding means can also be provided for holding a sheet metal plate 08 resting on the transport belt 11 in question, which are preferably also switchable.
  • the relevant transport device 09 can also have several, e.g. B. two mutually parallel transport belts 11 have.
  • At least two of these transport devices 09 are preferably arranged separately from one another, i.e. as independent structural units in different machine units, with one of these transport devices 09 being arranged in particular in the loading station 02 or in a transport module 04 or in the unloading station 07.
  • a transport module 04 is arranged directly upstream of the loading station 02, in particular, and/or a further transport module 04 is arranged directly downstream of the unloading station 07.
  • the transport belts 11 of the relevant transport devices 09 are each driven by an electric drive 16 in such a way that transport belts 11 arranged in different transport devices 09 are preferably synchronized with one another in terms of their respective rotational speed, so that sheet metal panels 08 transported by these transport belts 11 each have permissible minor tolerances apart from being transported at linear speeds of the same amount, these metal sheets 08 being transported on these transport belts 11, e.g. B. are held by suction and / or magnetically.
  • the metal sheets 08 resting on the transport belts 11 are transported in their transport plane, i.e.
  • the respective electric drive 16 of the relevant transport devices 09 is z. B. in each case designed as an electric motor and preferably in each case connected at least in terms of data technology to a control unit, in particular a machine control system of the production line 01 that is superordinate to the individual machine units, e.g. B. with a control station of this production line 01.
  • Transport belts 11 arranged in different transport devices 09 are preferably driven by their respective electric drive 16 in such a way that they B. rotate continuously, in particular in a synchronism. Alternatively, these transport belts 11 can also be driven in clocked fashion. It can also be provided that the transport belt 11 of a z. B. in the loading station 02 arranged transport device 09 clocked and / or resting on its transport belt 11 sheet metal 08 are driven in their linear speed temporarily decelerating, whereas the transport belt 11 of a z. B. in the unloading station 07 arranged transport device 09 clocked and / or resting on its transport belt 11 metal plate 08 are driven temporarily accelerating in their linear speed.
  • the synchronous operation of the transport belts 11 arranged in different transport devices 09 and thus above all the synchronous operation of the metal sheets 08 held by these transport belts 11 is particularly advantageous when the machine units of this production line 01 are started up or shut down.
  • the synchronous operation of the transport belts 11 arranged in different transport devices 09 and thus also of the metal sheets 08 must be ensured, but in particular also at the transitions between the machine units of this production line 01 involved in the production process, e.g. B. at the transition to the sheet metal painting machine 06 and/or at the transition to the continuous dryer 17.
  • the plate 12 of the relevant transport device 09 has on both sides of its each central area M has a belt-free edge area R1; R2, these edge areas R1; R2 preferably have the same width extending transversely to the transport direction T of the metal sheets 08 and are preferably arranged symmetrically with respect to a longitudinal extension of the relevant transport device 09.
  • the nozzles 14 arranged there are operated in such a way that, to form the air cushion, blown air is blown out of them against the underside of a sheet metal panel 08 resting on the at least one transport belt 11 of the transport device 09 in question and held on the transport belt(s) 11 in question.
  • at least some of the nozzles 14 of the nozzle arrays 13 z. B. are each designed as venturi nozzles. In the respective nozzle fields 13 z. B.
  • a first subset of individual nozzles 14 and/or a second subset of individual nozzles 14 are each arranged in such a way that the first subset of nozzles 14 directs the blown air outwards at an acute angle in the transport direction T of the metal sheets 08, i.e. in the direction of the transport device 09 in question and/or the second subset of nozzles 14 blow out the blast air vertically upwards.
  • FIG. 6 shows an example of a perspective view of the loading station 02 arranged in the production line 01 together with a transport module 04 arranged immediately upstream in the transport direction T of the metal sheets 08.
  • Both the loading station 02 and the transport module 04 each have their own frame 19; 21, these two machine units being joined together seamlessly, so that the frame 21 of the loading station 02 and the frame 19 of the transport module 04 form a joint joint.
  • the transport module 04 has a transport device 09 with a plate 12, on the plate 12 a direction indicated by an arrow Transport direction T to be transported metal sheet 08 is shown both in its largest format and in its smallest format.
  • the sheet metal plate 08 only rests on the transport belt 11 that runs longitudinally in the transport direction T and circulates on deflection rollers and is otherwise held floating above the plate 12 by an air cushion generated by means of nozzles 14 .
  • the transport module 04 according to the 3 and 4 points the in the 6
  • the embodiment variant of the transport device 09 shown has only a single transport belt 11 arranged longitudinally in the center of the plate 12 .
  • the loading station 02 has a transport device 09 for feeding metal sheets 08 lying flat one by one in a transport plane of this transport device 09 to the continuous dryer 17.
  • the loading station 02 also has at least one wire frame 22 that can be pivoted, generally in a circle, about an axis of rotation 23 that extends transversely to the transport direction T of the metal sheets 08 to be transported, with each of the wire frames 22 being designed in such a way that it covers the transport plane of the metal sheets lying flat therein 08 passes through it in a pivoting movement from bottom to top and with this pivoting movement vertically erects a sheet metal plate 08 that is lying flat and is to be transported through the continuous dryer 17 from the transport plane.
  • two z. B. clocked and decelerating driven conveyor belt 11 arranged z. B. by a suction and / or a magnetic holding force on this transport belt 11 flat metal plate 08 hold and flat metal plate 08 z. B. up to a transverse to the direction of transport T of the metal sheets 08 to be transported extending stop 24, wherein this stop 24 z. B. is formed by arranged on the axis of rotation 23 rubber buffer.
  • the transport device 09 of the loading station 02 preferably also has - as before in connection with the figure 5 described - two belt-free edge areas R1; R2, in each of which a nozzle array 13 is formed.
  • a plurality of nozzles 14 are arranged in the respective nozzle arrays 13 to form an air cushion carrying a sheet metal plate 08 lying flat on the transport belt 11.
  • B. ejects a first subset of blown air in the transport direction T of the metal sheets 08 at an acute angle obliquely outwards and/or z.
  • B. blows out a second subset of blown air vertically upwards in the direction of the underside of a sheet metal plate 08 resting on the transport belt 11 .
  • cantilevered arms 26 are arranged, each of which extends into one of the edge regions R1; R2, these recesses 27, to prevent the metal sheets 08 to be transported by the transport device 09 from getting caught, preferably one at an acute angle counter to the transport direction T of the metal sheets 08 in the direction of the nearest edge of the relevant edge that extends longitudinally to the transport direction T of the metal sheets 08 Transport device 09 running bevel 28 z. B. in the form of at least one correspondingly extending edge.
  • the transport device 09 of the unloading station 07 is constructed similarly to the transport device 09 of the loading station 02, so that the same reference numbers are used below for the same components.
  • the unloading station 07 also has at least one wire frame 22 that can be pivoted, generally in a circle, about an axis of rotation 23 that extends transversely to the transport direction T of the metal sheets 08 to be transported, with each of the wire frames 22 being designed in such a way that it aligns with the transport plane of the transport device 09 transported sheet metal panels 08 in a pivoting movement from top to bottom and with this pivoting movement one of the vertically upright transported metal panels 08 through the continuous dryer 17 is deposited flat in the transport plane of the transport device 09 of the unloading station 07.
  • the unloading station 07 are in the central area M of their transport device 09 parallel to each other two z. B. synchronously or clocked and accelerated driven conveyor belt 11 arranged z. B. by a suction and / or a magnetic holding force on this transport belt 11 flat metal plate 08 hold.
  • the transport device 09 of the unloading station 07 preferably also has - as before in connection with the figure 5 described - two belt-free edge areas R1; R2, in each of which a nozzle array 13 is formed.
  • a plurality of nozzles 14 are arranged in the respective nozzle arrays 13 to form an air cushion carrying a sheet metal plate 08 lying flat on the transport belt 11. B.
  • cantilevered arms 26 are arranged, each of which extends into one of the edge regions R1; R2, these recesses 27, to prevent the sheet metal panels 08 to be transported by the transport device 09 from getting caught, preferably one in each case at an acute angle in the transport direction T of the metal panels 08 in the direction of the nearest edge of the transport device in question that extends longitudinally to the transport direction T of the metal panels 08 09 running bevel 28 z.
  • An advantageous embodiment of a generic production line 01 for processing metal sheets 08 has several different machine units, with at least one of these machine units being designed in particular as a continuous dryer 17.
  • the continuous dryer 17 is designed in such a way that metal sheets 08 to be dried are set up vertically in this continuous dryer 17 and generally spaced apart from one another, with a loading station 02 that vertically erects metal sheets 08 lying flat in a transport plane of a transport device 09 upstream of the continuous-flow dryer 17 and/or a loading station 07 that lays down flat metal sheets 08 that are transported vertically by the continuous-flow dryer 17 in a transport plane of a transport device 09 upstream of the continuous-flow dryer 17 is subordinate.
  • the distance between adjacent metal sheets 08 transported in a vertically upright position by the continuous dryer 17 is only a few centimeters, e.g. B. between 1 cm and 5 cm, in particular less than 3 cm.
  • At least one pressurized fluid has been applied to at least one surface of the sheet metal panels 08 to be dried in the continuous dryer 17, ie on one side or both sides, in at least one machine unit designed as a metal sheet printing machine 03 or as a sheet metal painting machine 06.
  • the printed and/or painted sheet metal panels 08 are fed individually one after the other to the continuous-flow dryer 17, with these metal sheets 08 being erected vertically from their position in the loading station 02, which would otherwise lie flat in their transport plane in this production line 01, before being fed to the continuous-flow dryer 17.
  • a vertical erection is here z. B. an erection of the individual metal sheets 08 previously lying flat in the transport plane of the respective transport device 09 with a tolerance of less than ⁇ 30°, preferably less than ⁇ 15° to the vertical, with this vertical preferably being on the transport plane of the respective transport device 09 is related.
  • the metal sheets 08 in the unloading station 07 are laid down flat one after the other in the transport plane of a transport device 09.
  • a cooling zone 18, e.g. B. in the form of a cooling device in order to cool the sheet metal panels 08, which have been greatly heated during their passage through the continuous dryer 17, to a significantly lower temperature.
  • At least two machine units of this production line 01 are each in their own frame 19; 21 and functionally linked to one another for the joint execution of production, with these at least two machine units each having at least one transport device 09 for transporting at least one sheet metal plate 08 lying flat on the respective transport plane, with each of these separately arranged transport devices 09 for transporting the metal sheet 08 in question has at least one transport belt 11.
  • the transport belts 11 of the relevant transport devices 09 are each preferably driven by an electric drive 16, in particular in such a way that transport belts 11 arranged in different transport devices 09 are synchronized with one another in terms of their respective rotational speed, so that metal sheets 08 transported by these transport belts 11 are each at least almost equal amount, d. H.
  • an air cushion is preferably formed below these metal plates 08 and these metal plates 08 are arranged in a floating manner by the air cushion in their transport plane.
  • This problem consists in the fact that the paint applied to the front edge 29 and/or the rear edge 31 of the sheet metal panel 08 in question can be transferred to the at least one transport belt 11 during the transport of this sheet metal panel 08, thereby contaminating the transport belt 11 in question.
  • This unwanted transfer of paint to a conveyor belt 11 and / or on yet additional equipment of the transport devices 09 involved in the transport is referred to as paint wraparound.
  • the undesired wraparound of paint can occur in all machine units downstream of the metal painting machine 06 in the direction of transport T of the metal sheets 08 .
  • this problem is solved in that the relevant transport belt 11, d. H. on the side of which faces the metal plate 08 to be transported, there are raised areas, referred to as webs 32, and lowered areas, referred to as depressions 33, with each metal plate 08 being transported on the transport belt 11 in question being arranged to rest on at least one arrangement of webs 32 of the transport belt 11 in question is.
  • the transport belt 11 in question is of the z. g.
  • the webs 32 which extend transversely to the transport direction T of the metal sheets 08, can each be designed as continuous transverse ribs or interrupted as a punctiform support, e.g. B. in the form of knobs.
  • the respective front edge 29 and/or rear edge 31 of each sheet metal plate 08 to be transported resting on the transport side of the transport belt 11 in question is arranged in a freely floating manner in order to avoid paint wrap-around.
  • the transport belt 11 in question can, in a particularly advantageous embodiment, have on its transport side, in addition to the at least one arrangement of webs 32, at least one suction element 34, each with a self-contained raised contour 36, wherein one on the relevant transport belt 11 resting sheet metal 08 to be transported is held there by means of a vacuum exerted by the suction element 34 in question on the sheet metal sheet 08 in question.
  • the conveyor belt 11 in question can also have a lowered region 37 on its transport side that is not necessarily delimited by webs 32 and has a minimum back height, with this back height being designed to be lower than the respective height of the webs 32 and/or the respective height of the raised contour 36 of the at least a suction element 34.
  • a metal sheet 08 to be transported can be held on the transport belt 11 in question by means of a magnetic holding force. If a metal sheet 08 to be transported is held by suction, ie by means of negative pressure, the flat plate 12 ( 4 ) a suction box that extends longitudinally to the transport direction T of the metal sheets 08 is arranged, which is omitted if a metal sheet 08 to be transported is held by a magnetic holding force.
  • the at least one suction element 34 of the conveyor belt 11 in question has at least one bore or a corresponding opening pointing towards the suction box arranged below the plate 12, so that the at least one suction element 34 of the conveyor belt 11 in question and the suction box arranged below the plate 12 can be moved at least in the operating state of the Holding a sheet metal plate 08 resting on the transport side of the relevant transport belt 11 have a fluidic connection with each other.
  • At least in the belt-free edge areas R1; R2 of the plate 12 are each connected to a compressed air source so that blown air flowing out of these nozzles 14 against the underside of a sheet metal panel 08 resting on the at least one transport belt 11 of the transport device 09 in question forms an air cushion, by means of which the air in question is placed on the at least sheet metal plate 08 resting on a transport belt 11 is kept floating above the plate 12 in relation to the same and thus apart from its resting on the respective transport side of the at least one transport belt 11 to the relevant transport device 09 is non-contact.
  • At least one pair of belts 38 preferably - as in FIG 10 shown by way of example - to provide a double pair of belts 38, with the transport belts 11 of the respective pair of belts 38 being driven by their respective electric drive 16 independently of at least one other transport belt 11 arranged in this transport device 09, i.e. not belonging to the respective pair of belts 38, or independently of another in pair of belts 38 arranged in this transport device 09 are driven and their respective rotational speeds are set or at least adjustable by the control unit independently of the at least one other transport belt 11 arranged in this transport device 09 or of the other pair of belts 38 arranged in this transport device 09.
  • the individual transport belts 11 of a specific pair of belts 38 which are preferably arranged directly adjacent to one another, are each driven independently of one another by their respective electric drive 16 and their respective rotational speed is set or at least set independently of one another by the control unit.
  • On the relevant transport device 09 Arranged individual transport belts 11 and/or pairs of belts 38 can then act alternately with respect to a metal plate 08 to be transported, ie they transport a metal plate 08 to be transported alternately.
  • the metal sheets 08 to be transported can thus be synchronized with the production speed applicable in the production line 01 by an upstream machine unit, e.g. B.
  • a metal sheet 08 to be transported through several different machine units of the generic production line 01 is held in these machine units by resting on the relevant transport belt 11 or pair of belts 38 by means of at least one suction element 34 and/or a magnetic holding force.
  • the respective holding of the metal sheet 08 in question in the machine unit in question begins at its z. B. synchronous acquisition of the upstream machine unit and ends with their z. B. synchronous transfer to the downstream machine unit.
  • a production line 01 with a plurality of machine units, with at least one of these machine units having a device for transporting painted sheet metal panels 08, with this device having at least one transport belt 11 that transports the metal panels 08 individually and sequentially, with the relevant transport belt 11 in an endless loop is arranged circumferentially and has, at least on its transport side facing the relevant metal sheet 08 to be transported, at least one arrangement of a plurality of webs 32, each spaced apart by a depression 33, and extending transversely to the transport direction T of the metal sheets 08, with each metal sheet 08 being transported on the relevant transport belt 11 at least one of these arrangements of webs 32 of the conveyor belt 11 in question is arranged on top, with a control unit controlling the circulation of the conveyor belt 11 in question being provided.
  • One of the Machine units embodied as a sheet metal painting machine 06, with the sheet metal painting machine 06 being designed to paint the metal sheets 08 to be transported by the device up to their front edge 29 and/or rear edge 31 in relation to their transport direction T, with the relevant transport belt 11 of the device for transporting the painted metal sheets 08 is controlled by the control unit as a function of a format length L extending in the transport direction T of these metal sheets 08 in terms of its circulation in such a way that the respective front edge 29 and/or rear edge 31 of each metal sheet 08 to be transported is in the region of one between two adjacent webs 32 trained sink 33 is arranged.
  • a method for operating a production line 01 with a plurality of machine units with at least one of these machine units having a device for transporting painted sheet metal panels 08, with this device using at least one transport belt 11 to transport the metal panels 08 individually and sequentially, with the relevant transport belt 11 circulates in an endless loop and has at least one arrangement of a plurality of webs 32, each spaced apart by a depression 33 and extending transversely to the transport direction T of the metal sheets 08, at least on its transport side facing the relevant metal sheet 08 to be transported, with each metal sheet being transported on the relevant transport belt 11 08 rests on at least one of these arrangements of webs 32 of the transport belt 11 in question, with a control unit controlling the circulation of the transport belt 11 in question, with one of the machine units as a a sheet metal painting machine 06 is configured, with the sheet metal painting machine 06 painting the metal sheets 08 to be transported by the device up to their front edge 29 and/or rear edge 31 in relation to their transport direction T, with the control unit controlling the relevant transport belt 11 of the

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  • Mechanical Engineering (AREA)
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EP21177926.9A 2020-09-29 2021-06-07 Ligne de production pourvue de plusieurs unités machines et son procédé de fonctionnement Active EP3974360B1 (fr)

Applications Claiming Priority (1)

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DE102020125412.1A DE102020125412A1 (de) 2020-09-29 2020-09-29 Vorrichtung zum Transport von jeweils bis an ihre auf ihre Transportrichtung bezogene Vorderkante und/oder Hinterkante lackierten Blechtafeln

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EP3974360A1 true EP3974360A1 (fr) 2022-03-30
EP3974360B1 EP3974360B1 (fr) 2023-10-18

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Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5662355U (fr) * 1979-10-18 1981-05-26
JPH04211943A (ja) 1990-07-13 1992-08-03 Sumitomo Heavy Ind Ltd 枚葉印刷機用排紙装置
DE19636086A1 (de) 1996-09-06 1998-03-12 Nsm Magnettechnik Gmbh Magnetbandförderer für den hängenden Transport von Blechen o. dgl.
DE19636161A1 (de) 1996-09-06 1998-03-12 Nsm Magnettechnik Gmbh Förderband für einen Endlosförderer mit Unterdruckeinrichtung
DE19963461A1 (de) * 1999-12-28 2001-07-05 Nsm Magnettech Gmbh & Co Kg Bandfördereinrichtung für die hängende Beförderung von Bauteilen und Verfahren zum Betreiben der Bandfördereinrichtung
EP1588967A2 (fr) 2004-04-23 2005-10-26 MAN Roland Druckmaschinen AG Table de transport
EP1749773A2 (fr) 2005-08-06 2007-02-07 LTG Mailänder GmbH & Co. KG Système de transport pour une machine d'impression de feuilles de tôle ou une machine de laquage de feuilles de tôle
EP2505532A2 (fr) 2011-04-01 2012-10-03 Simon Corrugated Machinery, S.L. Dispositif et systéme pour transporter des feuilles
EP2520520A1 (fr) 2011-05-02 2012-11-07 Robert Bürkle GmbH Dispositif de transport à positionnement précis d'objets plats
DE102016208074A1 (de) 2016-05-11 2017-11-16 Heidelberger Druckmaschinen Ag Förderband für Druckbogen
DE102017215374A1 (de) 2017-09-01 2019-03-07 Koenig & Bauer Ag Fördervorrichtung
DE102019118647B3 (de) * 2019-07-10 2020-06-10 Koenig & Bauer Ag Produktionslinie zur Bearbeitung von Blechtafeln

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5662355U (fr) * 1979-10-18 1981-05-26
JPH04211943A (ja) 1990-07-13 1992-08-03 Sumitomo Heavy Ind Ltd 枚葉印刷機用排紙装置
DE19636086A1 (de) 1996-09-06 1998-03-12 Nsm Magnettechnik Gmbh Magnetbandförderer für den hängenden Transport von Blechen o. dgl.
DE19636161A1 (de) 1996-09-06 1998-03-12 Nsm Magnettechnik Gmbh Förderband für einen Endlosförderer mit Unterdruckeinrichtung
DE19963461A1 (de) * 1999-12-28 2001-07-05 Nsm Magnettech Gmbh & Co Kg Bandfördereinrichtung für die hängende Beförderung von Bauteilen und Verfahren zum Betreiben der Bandfördereinrichtung
EP1588967A2 (fr) 2004-04-23 2005-10-26 MAN Roland Druckmaschinen AG Table de transport
EP1749773A2 (fr) 2005-08-06 2007-02-07 LTG Mailänder GmbH & Co. KG Système de transport pour une machine d'impression de feuilles de tôle ou une machine de laquage de feuilles de tôle
EP2505532A2 (fr) 2011-04-01 2012-10-03 Simon Corrugated Machinery, S.L. Dispositif et systéme pour transporter des feuilles
EP2520520A1 (fr) 2011-05-02 2012-11-07 Robert Bürkle GmbH Dispositif de transport à positionnement précis d'objets plats
DE102011100210A1 (de) * 2011-05-02 2012-11-08 Robert Bürkle GmbH Vorrichtung zum postionsgenauen Transport von flächigen Werkstücken
DE102016208074A1 (de) 2016-05-11 2017-11-16 Heidelberger Druckmaschinen Ag Förderband für Druckbogen
DE102017215374A1 (de) 2017-09-01 2019-03-07 Koenig & Bauer Ag Fördervorrichtung
DE102019118647B3 (de) * 2019-07-10 2020-06-10 Koenig & Bauer Ag Produktionslinie zur Bearbeitung von Blechtafeln

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ES2967032T3 (es) 2024-04-25
EP3974360B1 (fr) 2023-10-18
DE102020125412A1 (de) 2022-03-31

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