EP2620400A1 - Transport system for transporting sheet panels in a sheet printing or coating device - Google Patents

Transport system for transporting sheet panels in a sheet printing or coating device Download PDF

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Publication number
EP2620400A1
EP2620400A1 EP13164825.5A EP13164825A EP2620400A1 EP 2620400 A1 EP2620400 A1 EP 2620400A1 EP 13164825 A EP13164825 A EP 13164825A EP 2620400 A1 EP2620400 A1 EP 2620400A1
Authority
EP
European Patent Office
Prior art keywords
suction
transport system
sheet
metal
suction elements
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
EP13164825.5A
Other languages
German (de)
French (fr)
Other versions
EP2620400B1 (en
Inventor
Steffen Fischer
Andreas Vollmann
Bernhard Mokler
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.)
KBA Metalprint GmbH and Co KG
Original Assignee
KBA Metalprint GmbH and Co KG
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 KBA Metalprint GmbH and Co KG filed Critical KBA Metalprint GmbH and Co KG
Publication of EP2620400A1 publication Critical patent/EP2620400A1/en
Application granted granted Critical
Publication of EP2620400B1 publication Critical patent/EP2620400B1/en
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
    • B65H11/00—Feed tables
    • B65H11/002—Feed tables incorporating transport 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
    • B65H3/00—Separating articles from piles
    • B65H3/46—Supplementary devices or measures to assist separation or prevent double feed
    • B65H3/60—Loosening articles in piles
    • B65H3/64—Loosening articles in piles by vacuum apparatus
    • 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
    • B65H5/228—Feeding articles separated from piles; Feeding articles to machines by air-blast or suction device by air-blast devices
    • 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
    • B65H5/24—Feeding articles in overlapping streams, i.e. by separation of articles from a pile
    • 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
    • B65H2301/445—Moving, forwarding, guiding material stream of articles separated from each other
    • B65H2301/4451—Moving, forwarding, guiding material stream of articles separated from each other forming a stream or streams of separated articles
    • B65H2301/44514—Separating superposed articles
    • 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
    • B65H2406/366—Means for producing, distributing or controlling suction producing vacuum
    • B65H2406/3661—Injectors
    • 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

Definitions

  • the present invention relates to a transport system for transporting sheets in a sheet metal or sheet metal painting machine, which has such a sheet-metal suction device.
  • Transport systems for sheet metal or sheet metal painting machines are well known, such as. From the document EP 1 749 773 A2 , Such transport systems are generally used to guide metal sheets positionally accurate to positioning marks a feed drum following the transport system, so that the metal sheet as defined as possible abuts with its leading edge on the landing page. In addition to this orientation, the transported metal sheet is also aligned transversely to its direction of movement, for which, for example, a side alignment device is provided.
  • the transport system must hand over the metal sheet to the feed drum with high precision, in order to achieve high accuracy in the subsequent printing, and on the other hand, the transport system must allow a high throughput.
  • the metal sheets are fed to the transport system as a scale flow, that is, that successive metal sheets partially overlap.
  • care must be taken within the transport system that the uppermost sheet-metal panel which is transferred to the feed drum does not catch against underlying metal sheets, which would lead to a disruption and thus to the stoppage of the transport system.
  • This problem of hooking of overlapping metal sheets occurs in particular when the metal sheets do not have straight side edges.
  • Fig. 2 For example, two metal sheets 20 are shown, each having not straight side edges 22. In order to minimize waste, ie to use the metal sheet surface as completely as possible, the metal sheets are cut in the manner shown. In general, such metal sheets are referred to as so-called scroll metal sheets.
  • the US 2004/0178567 A1 discloses a sheet-fed press with a sheet guiding apparatus.
  • a feed table is associated with a traverse with blow-suction slot nozzles.
  • the DE 197 56 032 A1 relates to a device for separating and transporting sheets into a sheet feeder of printing presses. There are blow-suction elements equipped with directed in sheet conveying direction blow-suction nozzles.
  • the DE 196 31 175 C1 describes a device for guiding a sheet in the region of a sheet system of a sheet-processing machine. It is provided in the area of front brands a traverse with tuyeres. If a blowing suction effect is to be used in these blowing nozzles, the blowing nozzles are to be arranged in such a way that they blow out at an oblique angle from the traverse against the sheet running direction of the sheets.
  • an object of the present invention is to provide a sheet-metal suction device, which prevents the simplest cost-effective means snagging so-called. Scroll metal sheets within the transport system.
  • a holding device is provided, which is attachable to the support table and extends above the support table inwardly to the central longitudinal axis, and that at least two suction elements are provided, which are spaced from the support means to the support table , preferably mirror-symmetrical to the central longitudinal axis of the support table, each suction element having a bottom with at least one opening, the bottom with the opening being held parallel to and spaced from the metal sheet, and wherein the suction elements are connectable to the compressed air device; Opening in the bottom of each Saugelements serves as an outlet for the supplied compressed air.
  • the sheet-metal sheet suction device has a plurality of suction elements, with the aid of which in the incoming scale flow overhead metal sheet can be easily lifted, to prevent in this way that the metal sheets get caught.
  • the suction elements themselves are simply constructed elements that are supplied with compressed air and allow it to flow through an outlet opening lying parallel to the metal sheet. If the distance between the sheet metal plate and the outlet opening is small enough, paradoxically, there is a suction effect which holds the metal sheet on the suction element, although no contact occurs between the metal sheet and the suction element.
  • suction elements which can also be referred to as blow-suction elements, is that they can be produced very inexpensively, since their geometry can be configured very simply. Ultimately, it is only necessary to allow the supplied compressed air to flow out perpendicular to the plate surface, wherein the compressed air after flowing should flow as evenly as possible in all directions within a plane.
  • the sheet-metal suction device also in that the suction elements while sucking the metal sheets and stand out from the underlying metal sheet, but do not allow contact between metal sheet surface and suction. This can prevent damage to the surface of the metal sheet. Rather, in the sucked state, the metal sheet can be transported further in the transport direction, as an air cushion between the suction elements and the metal sheet forms and set virtually no forces transverse to the suction direction.
  • the sheet panel suction device according to the invention has the advantage that it is a system that can be easily used for retrofitting existing transport systems.
  • the holding device has a first traverse, which extends over substantially the entire width of the support table, and two guide rails are provided, which are attachable to the two sides of the support table and which are adapted to the cross member displaced in the transport direction to keep.
  • the suction elements on the traverse at least at right angles to the transport direction, preferably arranged in the transport direction, displaced.
  • the holding device has a second traverse, which, viewed in the transport direction, is arranged behind the first traverse and on which at least two suction elements are mounted, preferably mirror-symmetrically to the central longitudinal axis.
  • the provision of a second traverse has the advantage of being able to distribute the required suction elements for lifting a metal sheet even better - viewed over the surface of a metal sheet. A secure lifting of the metal sheet is thus ensured safer.
  • a solenoid valve is provided, which is located between suction elements and compressed air device to the compressed air flow to the suction elements controlled on and off.
  • suction device does not have to be constantly in operation, but, for example, is only activated when scrolled metal sheets are to be processed.
  • suction elements can be controlled “on” and “off” switch, which allows a more targeted controlled lifting of metal sheets.
  • a pressure valve is provided which is connected on the one hand to the suction elements and on the other hand connected to the compressed air device in order to set the pressure of the compressed air to the suction preferably manually.
  • This measure has the advantage that the suction force can be set by the user very easily via the pressure valve in order to be able to react to different sheet metal properties.
  • At least four suction elements are provided on the first traverse, wherein at least two suction elements in the - viewed at right angles to the transport direction - lateral region and at least two suction elements are arranged in the central region.
  • This arrangement of the individual suction elements has been found to be particularly advantageous with regard to the lifting of a metal sheet.
  • the dropping of one end of the metal sheet can thus rather avoid the distributed arrangement of the suction elements.
  • each suction element has a cylindrical construction, wherein preferably a connectable to the compressed air inlet port is provided in the suction member, which is connected via a channel with the outlet opening.
  • the inlet opening is provided in a cover surface opposite the bottom of the suction element.
  • the channel has different flow cross sections, in particular diameter.
  • a portion of the channel adjacent the outlet opening has a larger diameter than a portion remote therefrom.
  • suction elements of the present invention may be simpler in construction than the "classic" suction elements, which must be subjected to negative pressure.
  • the geometry of the suction elements can be made very different, with some examples are listed below like a list.
  • An outlet portion of the adjacent channel portion may have a larger diameter than a portion remote therefrom.
  • the surface surrounding the outlet opening of the bottom can be mirror-symmetrical at least to one axis.
  • the floor can be circular.
  • the bottom may have a bevel at its peripheral edge, preferably of 30 °.
  • the outlet opening may have a chamfer, preferably of 30 °.
  • the suction element may have a plurality of outlet openings in the bottom.
  • the suction elements may be arranged such that their outlet openings are in line.
  • the Suction elements may be arranged such that their outlet openings are alternately offset from a line.
  • On the outside of the bottom flow guide elements are provided.
  • the flow guide may be from the outlet opening outwardly extending elevations. Downstream of the outlet opening may be provided a Strömungsumschelement which deflects the flow in a direction parallel to the ground. Upstream of the outlet opening, at least one flow rectifier can be provided in the suction element.
  • the object underlying the invention is also achieved by a transport system for transporting metal sheets in a sheet metal or sheet metal painting machine, which uses at least one sheet panel suction device, as previously explained.
  • the transport system according to the invention has the same advantages as the metal sheet suction device described above, so that a repeated enumeration of these advantages is unnecessary.
  • a transport system is shown and designated by the reference numeral 10.
  • This transport system 10 serves to transport tabular goods, in particular metal sheets, in a direction T from one end of the transport system to the opposite end.
  • the transport system 10 also has the task of aligning the metal sheet both laterally and with respect to the leading edge of the metal sheet.
  • the transport system 10 is a part of a sheet metal printing machine or sheet metal painting machine and is provided immediately before a so-called feed drum with positioning marks and grippers.
  • By aligning the metal sheet in the transport system 10 is a positionally accurate and reproducible transfer to the feed drum to be done, which in turn feeds the metal sheet in registration to a rolling mill for printing the surface of the metal sheet.
  • transport systems 10 are used in systems of the applicant with the product name "Sprint®", so that it can also be referred to.
  • a transport system 10 which is often referred to as a sheet metal applicator, a support table 12 with a central longitudinal axis M and conveyor belts 14 and possibly suction belts 16.
  • a transport system 10 which is often referred to as a sheet metal applicator, a support table 12 with a central longitudinal axis M and conveyor belts 14 and possibly suction belts 16.
  • the suction belts 16 serve to push the metal sheets against the application marks of the feed drum to achieve a positionally accurate investment.
  • the metal sheets are also laterally aligned by the transport system 10, with side marks 18 being provided for this purpose, which interact with the side edges of the metal sheet.
  • the side marks 18 are arranged at one end of the transport system 10 and act in a known manner, so that it need not be discussed further.
  • transport system 10 is formed as an independent unit and can be exchanged at any time as a modular unit within a sheet metal or sheet metal painting machine.
  • the transport system 10 also includes a sheet panel suction device 30, which is also provided as a replaceable unit, so that existing transport system 10 so that, for example, can be retrofitted.
  • the sheet-metal suction device 30, which is hereinafter referred to only as a suction device, has a first traverse 32 which extends over the entire width of the support table 12 and preferably comprises a profile carrier.
  • the first traverse 32 is attached at its two ends to carriage 34, which in turn are guided in guide rails 36.
  • the guide rails 36 are laterally mounted on both sides of the support table 12 such that the first cross member in the transport direction T (or opposite thereto) is displaceable, wherein the distance of the first cross member to the support table 12 remains constant.
  • the first traverse 32 thus moves in a plane which is parallel to the plane of the support table 12 and thus the transport plane of the metal sheets.
  • a plurality of, in the present embodiment, four suction elements 40 are provided which are fixed to arms 42.
  • the booms 42 are arranged at right angles to the first traverse and can preferably be displaced relative to the first traverse and in the transport direction T.
  • a suction member 40 is attached, wherein the attachment preferably takes place so that the suction member is displaceable relative to the boom 42.
  • the suction elements 40 are naturally arranged so that their "suction side" is directed down to the support table 12.
  • the four attached to the first cross member 32 suction members 40 are mounted so that the two outer Saugelements 40 have a slightly greater distance from the first cross member than the two inner suction elements 40.
  • the outer suction elements 40th and the inner suction members 40 each lie on a line parallel to the first cross member 32.
  • the described arrangement of the four suction elements 40 is purely exemplary and usually depends on the format of the sheet metal plates used. Due to the displaceability of the suction elements 40 both in the transport direction and perpendicular to an adaptation to different metal sheet formats very quickly and easily possible. Usually, the suction elements are arranged mirror-symmetrically to the central longitudinal axis M in order to achieve a uniform lifting of the metal sheet. Of course, other asymmetrical arrangements are conceivable, if this requires the specific application, for example. Due to a special nature of the metal sheet.
  • compressed air manifolds 58 are still provided, which are on the one hand connected to a compressed air generating device, for example.
  • a compressor and on the other hand this compressed air not shown - hose connections lead to the suction elements.
  • the suction elements 40 have for this purpose via hose coupling connections, so that the compressed air hoses can be easily connected and removed.
  • the sheet metal sheet suction device 30 described also includes a second cross member 38, which also extends over the entire width of the support table 12, but in contrast to the first traverse is fixedly mounted on the support table 12.
  • the second cross member 38 can be easily detached or attached from the support table 12, so that a retrofitting of a support table 12 is easily possible.
  • the second traverse 38 is, as in Fig. 1 clearly visible, arranged at the end (in the transport direction) of the support table 12, so that the second traverse seen in the transport direction is behind the first cross member 32.
  • the second cross member 38 which is formed in the present embodiment as a tubular rod, carries further suction elements 40, in the present embodiment, a total of two suction elements 40.
  • These suction elements 40 are arranged displaceable on the second cross member 38 perpendicular to the transport direction T, so that an individual adjustment of Location of the suction elements 40 is possible.
  • the two suction elements 40 each lie on a line parallel to the transport direction with an outer suction element 40 of the first crosspiece 32.
  • the sheet-plate suction device 30 comprises two further suction elements 40, which are arranged in the region of the side marks 18 and are held by arms 42.
  • the arms 42 extend perpendicular to the transport direction, so that a displacement of the suction elements 40 perpendicular to the transport direction and relative to the arms 42 is possible. Since the side markers 18 are displaceable perpendicular to the transport direction in order to be able to react to different sheet metal plate formats, the arms 42 are displaced with the suction elements when the side marks are adjusted.
  • the Fig. 1 can still recognize a tuyere 52, which is attached to the first cross member 32 and is aligned in the transport direction T.
  • the blowing nozzle 52 serves to blow compressed air in the direction of the trailing edge of a passing metal sheet to improve the lifting of scaled incoming metal sheets. It is understood that on the traverse 32 not only the one shown blowing nozzle 52, but at least one additional blowing nozzle is mounted.
  • the sheet panel suction device 30 in addition to the above-described components preferably also includes a pressure valve, with the aid of which the pressure of the suction elements 40 supplied compressed air can be adjusted, the adjustment either manually or automatically.
  • a further valve may be provided to control the suction elements 40 supplied compressed air flow controlled on and off.
  • the main task of the transport system 10 is to guide a metal sheet accurately to the positioning marks of the downstream feed drum.
  • the front portion of the metal sheet is sucked on the suction belts 16 and pushed against the positioning marks, it being possible that the suction belts slip something when the leading edge of the metal sheet rests against the placement marks.
  • the transport system 10 may also have, for example, so-called trailing edge thrusts in order to guide the metal sheet to the placement marks.
  • the metal sheets usually reach the transport system 10 in the form of a so-called scale flow, in which successive metal sheets partially overlap.
  • the top sheet metal of the scale flow is now released from this and fed to the feed drum. This results in a difference in speed between the top metal sheet and the underlying subsequent sheet metal.
  • This speed difference is usually not critical; when it comes to the Metal sheets, however, are so-called scroll metal sheets (for example, in Fig. 2 shown), the side edges 22 of the superimposed metal sheets can interlock with each other, so that there is a disturbance.
  • the suction device 30 is activated, which lifts with the help of the suction elements 40 at least the side regions of the uppermost metal sheet from the underlying metal sheet.
  • the suction elements 40 compressed air is supplied, which is blown in the direction of the metal sheet. If the suction elements 40 are located at a certain very small distance from the metal sheet, a suction effect results, which pulls the metal sheet in the direction of the suction elements and thus lifts them.
  • suction elements 40 attached to the first traverse 32 not only as lifting but also as drag-suction elements, for which purpose the traverse 32 could be moved in the transport direction.
  • the in the in Fig. 1 Suction elements 40 used have a cylindrical body, which in the FIGS. 3a and 3b designated by the reference numeral 44.
  • a bore 46 is provided, which forms a channel which connects an inlet opening 48 with an outlet opening 47 in the bottom 45 of the cylindrical body.
  • the channel 46 has a first diameter in the portion facing the inlet opening 48 and a second diameter in its portion facing the outlet opening 47, wherein the first diameter is greater than the second diameter.
  • the bottom 45 of the cylindrical body 44 is smooth and flat and lies in a built-suction element is substantially parallel to the support table and thus to the sheet metal to be lifted.
  • the compressed air is supplied via a hose connection to the inlet opening 48, and then flows through the channel 46 through the outlet opening 47 to the outside. If the metal sheet is close to the bottom 45 with a very small distance, the outflowing compressed air is deflected on the metal sheet and flows evenly radially outwards. By the outflowing compressed air, a negative pressure is generated, which ensures that the metal sheet is sucked, but not so far that the outlet opening 47 is covered.
  • the suction element 40 as it is in Fig. 3a is shown, is preferably made of plastic and is very inexpensive due to the simple geometry.
  • FIGS. 4 to 10 some of the possible embodiments of suction elements 40 are shown, this is not a final list. Rather, other - not shown - shapes and geometries are conceivable as long as the effluent from the outlet port 47 compressed air can generate a negative pressure.
  • FIG. 4a, b For example, an embodiment of the suction element 40 is shown, in which the body is composed of a pipe section 50 and an adjoining flange plate 49.
  • the flange plate 49 is formed circular, as in Fig. 4a can be seen.
  • other shapes such as oval, rectangular, square or polygonal are conceivable, as in the FIGS. 5a, b and c is indicated.
  • the outlet port 47 may have a phase at the edge as in FIG Fig. 6a represented by the reference numeral 54.
  • the outlet opening 47 usually has a circular cross section, as in Fig. 7a is shown. However, other cross sections are conceivable, for example. Rectangular, oval or star-shaped, as in the FIGS. 7b, 7c or 7d is shown. In addition, the outlet opening 47 can be arranged slightly offset from the center M of the body 44, such as in Fig. 7f shown.
  • FIGS. 8a to 8h Further embodiments of the suction element 40 are shown, wherein the individual configurations differ, inter alia, by the shape of the channel 46. So it is not absolutely necessary that the channel 46 extends in one direction, as for example in Fig. 8f but the channel 46 may have two or more sections which are oblique or perpendicular to each other. In addition, it is conceivable that the first portion of the channel 46 opens into a chamber 62 formed by a cup-shaped housing 64, this space 62 being covered by a flange plate 49 with the outlet opening 47. This embodiment is, for example, in Fig. 8g shown.
  • the compressed air is supplied to the suction element 40 usually via a hose which in the Fig. 8b is shown schematically and designated by the reference numeral 56.
  • FIGS. 10a to d Further embodiments of the suction element 40 are in the FIGS. 10a to d represented, wherein in the FIGS. 10a and b solution shown has a pot-shaped body whose outlet opening 47 is larger than the opposite inlet opening 48. Even with such a suction element, it is possible to suck a metal sheet.
  • suction elements 40 shown above are usually each individually arranged individually on the traverse, as in Fig. 1 is shown. However, if the suction force of a single suction element is not sufficient in this area, several suction elements can be grouped into a suction element arrangement 70, as shown in FIGS FIGS. 9a to h is shown schematically.
  • Fig. 9d a solution is shown in which the suction elements 40 are in turn attached to a bar 66, however, adjacent suction elements 40 are offset arranged to each other, so that the outlet openings 47 are also offset from a line.
  • one-piece suction element assemblies 70 may be provided, such as in the FIGS. 9a, 9b . 9e, 9f or 9h shown. All these solutions have in common that in addition to a plurality of circular or slot-shaped outlet openings 47 and apertures 74 are provided, which are intended in particular to drain the flowing between metal sheet and the bottom of the suction member assembly 70 compressed air.
  • the present invention proposes a sheet panel suction device 30, which allows a very simple and thus cost-effective means lifting a metal sheet, so as to avoid snagging of scroll metal sheets.
  • the suction elements are not supplied as usual with a negative pressure, but rather with compressed air, which is usually present in each system, so that no cost for a vacuum generating device.
  • the proposed suction members have the property that the metal sheet is not sucked so far as to touch the bottom of the suction members, so that damage to the sheet panel surface is avoided in any case even if the metal sheets slide past the suction members.
  • the metal sheet suction device according to the invention is designed so that it can be attached as a retrofit kit to existing transport systems with relatively little effort. The effort is further reduced, in particular, when the traverse 32 or the traverse 38 is already present, for example, the tuyeres 52.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sheets, Magazines, And Separation Thereof (AREA)
  • Delivering By Means Of Belts And Rollers (AREA)

Abstract

The suction device is part of a sheet metal plate transporting system (10). It includes a holding device (32), and at least two suction elements (40) each with a bottom having at least one aperture, running parallel to the suction aperture and at a spacing from it. The suction elements can be connected to a compressed air device. The holding device may have guide bars (36) for aligning with the two sides of the transporting-system resting table (12).

Description

Die vorliegende Erfindung betrifft ein Transportsystem zum Transport von Blechtafeln in eine Blechdruck- oder Blechlackiermaschine, das eine solche Blechtafel-Saugvorrichtung aufweist.The present invention relates to a transport system for transporting sheets in a sheet metal or sheet metal painting machine, which has such a sheet-metal suction device.

Transportsysteme für Blechdruckmaschinen oder Blechlackiermaschinen sind allgemein bekannt, wie bspw. aus der Druckschrift EP 1 749 773 A2 . Derartige Transportsysteme werden allgemein dazu eingesetzt, Blechtafeln positionsgenau an Anlegemarken einer dem Transportsystem folgenden Anlegetrommel zu führen, so dass die Blechtafel möglichst definiert mit ihrer Vorderkante an der Anlegemarke anliegt. Zusätzlich zu dieser Ausrichtung wird die transportierte Blechtafel auch quer zu ihrer Bewegungsrichtung ausgerichtet, wofür bspw. eine Seitenausrichtungsvorrichtung vorgesehen ist.Transport systems for sheet metal or sheet metal painting machines are well known, such as. From the document EP 1 749 773 A2 , Such transport systems are generally used to guide metal sheets positionally accurate to positioning marks a feed drum following the transport system, so that the metal sheet as defined as possible abuts with its leading edge on the landing page. In addition to this orientation, the transported metal sheet is also aligned transversely to its direction of movement, for which, for example, a side alignment device is provided.

Insgesamt muss das Transportsystem einerseits die Blechtafel mit hoher Präzision an die Anlegetrommel übergeben, um eine hohe Genauigkeit beim nachfolgenden Bedrucken zu erzielen, und andererseits muss das Transportsystem einen hohen Durchsatz zulassen.Overall, the transport system must hand over the metal sheet to the feed drum with high precision, in order to achieve high accuracy in the subsequent printing, and on the other hand, the transport system must allow a high throughput.

Gerade bei hohen Durchsätzen werden die Blechtafeln dem Transportsystem als Schuppenstrom zugeführt, d.h., dass sich aufeinanderfolgende Blechtafeln teilweise überlappen. Bei einem solchen Schuppenstrom ist innerhalb des Transportsystems darauf zu achten, dass sich die oberste Blechtafel, die der Anlegetrommel übergeben wird, nicht mit darunterliegenden Blechtafeln verhakt, was zu einer Störung führen würde und damit zum Stillstand des Transportsystems. Dieses Problem des Verhakens von überlappenden Blechtafeln tritt insbesondere dann auf, wenn die Blechtafeln keine geraden Seitenkanten besitzen.Especially at high throughputs, the metal sheets are fed to the transport system as a scale flow, that is, that successive metal sheets partially overlap. In the case of such an imbricated stream, care must be taken within the transport system that the uppermost sheet-metal panel which is transferred to the feed drum does not catch against underlying metal sheets, which would lead to a disruption and thus to the stoppage of the transport system. This problem of hooking of overlapping metal sheets occurs in particular when the metal sheets do not have straight side edges.

In Fig. 2 sind beispielhaft zwei Blechtafeln 20 dargestellt, die jeweils nicht gerade Seitenkanten 22 besitzen. Um möglichst wenig Abfall zu haben, d.h., die Blechtafelfläche möglichst vollständig zu nutzen, werden die Blechtafeln in der gezeigten Art und Weise geschnitten. Man spricht bei solchen Blechtafeln im Allgemeinen von sog. Scroll-Blechtafeln.In Fig. 2 For example, two metal sheets 20 are shown, each having not straight side edges 22. In order to minimize waste, ie to use the metal sheet surface as completely as possible, the metal sheets are cut in the manner shown. In general, such metal sheets are referred to as so-called scroll metal sheets.

Es ist leicht vorstellbar, dass solche Scroll-Blechtafeln in einem Schuppenstrom Probleme beim Vereinzeln machen können. Insbesondere können sich die seitlichen nicht geraden Kanten übereinanderliegender Blechtafeln leicht verhaken und dadurch eine Unterbrechung verursachen.It is easy to imagine that such scroll metal sheets in a scale flow can make separation problems. In particular, the lateral non-straight edges of overlying metal sheets can easily catch and thereby cause a break.

Die US 2004/0178567 A1 offenbart eine Bogendruckmaschine mit einer Vorrichtung zum Führen von Bogen. Einem Zuführtisch ist eine Traverse mit Blas-Sog-Schlitzdüsen zugeordnet.The US 2004/0178567 A1 discloses a sheet-fed press with a sheet guiding apparatus. A feed table is associated with a traverse with blow-suction slot nozzles.

Die DE 197 56 032 A1 betrifft eine Einrichtung zum Vereinzeln und Transportieren von Bogen in einen Bogenanleger von Druckmaschinen. Dort sind Blas-Sog-Elemente mit in Bogenförderrichtung gerichteten Blas-Sog-Düsen ausgestattet.The DE 197 56 032 A1 relates to a device for separating and transporting sheets into a sheet feeder of printing presses. There are blow-suction elements equipped with directed in sheet conveying direction blow-suction nozzles.

Die DE 196 31 175 C1 beschreibt eine Vorrichtung zum Führen eines Bogens im Bereich einer Bogenanlage einer bogenverarbeitenden Maschine. Dabei ist im Bereich von Vordermarken eine Traverse mit Blasdüsen vorgesehen. Soll bei diesen Blasdüsen ein Blas-Sog-Effekt genutzt werden, sind die Blasdüsen in der Weise anzuordnen, dass sie in schrägem Winkel aus der Traverse gegen die Bogenlaufrichtung der Bogen ausblasen.The DE 196 31 175 C1 describes a device for guiding a sheet in the region of a sheet system of a sheet-processing machine. It is provided in the area of front brands a traverse with tuyeres. If a blowing suction effect is to be used in these blowing nozzles, the blowing nozzles are to be arranged in such a way that they blow out at an oblique angle from the traverse against the sheet running direction of the sheets.

Vor diesem Hintergrund besteht eine Aufgabe der vorliegenden Erfindung darin, eine Blechtafel-Saugvorrichtung zu schaffen, die mit einfachsten kostengünstigen Mitteln ein Verhaken von sog. Scroll-Blechtafeln innerhalb des Transportsystems verhindert.Against this background, an object of the present invention is to provide a sheet-metal suction device, which prevents the simplest cost-effective means snagging so-called. Scroll metal sheets within the transport system.

Diese Aufgabe wird von der eingangs genannten Blechtafel-Saugvorrichtung dadurch gelöst, dass eine Halteeinrichtung vorgesehen ist, die am Auflagetisch anbringbar ist und sich oberhalb des Auflagetischs nach Innen zur Mittellängsachse erstreckt, und dass zumindest zwei Saugelemente vorgesehen sind, die an der Halteeinrichtung beabstandet zum Auflagetisch, vorzugsweise spiegelsymmetrisch zur Mittellängsachse des Auflagetisches, angebracht sind, wobei jedes Saugelement einen Boden mit zumindest einer Öffnung aufweist, wobei der Boden mit der Öffnung zum Saugen parallel und beabstandet zur Blechtafel gehalten ist, und wobei die Saugelemente mit der Drucklufteinrichtung verbindbar sind, wobei die Öffnung im Boden jedes Saugelements als Auslaßöffnung für die zugeführte Druckluft dient.This object is achieved by the above-mentioned sheet-metal suction device in that a holding device is provided, which is attachable to the support table and extends above the support table inwardly to the central longitudinal axis, and that at least two suction elements are provided, which are spaced from the support means to the support table , preferably mirror-symmetrical to the central longitudinal axis of the support table, each suction element having a bottom with at least one opening, the bottom with the opening being held parallel to and spaced from the metal sheet, and wherein the suction elements are connectable to the compressed air device; Opening in the bottom of each Saugelements serves as an outlet for the supplied compressed air.

Das heißt mit anderen Worten, dass die erfindungsgemäße Blechtafel-Saugvorrichtung über mehrere Saugelemente verfügt, mit deren Hilfe die im ankommenden Schuppenstrom oben liegende Blechtafel leicht angehoben werden kann, um auf diese Weise zu verhindern, dass sich die Blechtafeln verhaken. Bei den Saugelementen selbst handelt es sich um einfach aufgebaute Elemente, die mit Druckluft versorgt werden und diese durch eine parallel zur Blechtafel liegende Auslaßöffnung strömen lassen. Ist der Abstand zwischen Blechtafel und Auslaßöffnung klein genug, ergibt sich paradoxerweise eine Saugwirkung, die die Blechtafel an dem Saugelement hält, wobei allerdings keine Berührung zwischen Blechtafel und Saugelement auftritt.In other words, that the sheet-metal sheet suction device according to the invention has a plurality of suction elements, with the aid of which in the incoming scale flow overhead metal sheet can be easily lifted, to prevent in this way that the metal sheets get caught. The suction elements themselves are simply constructed elements that are supplied with compressed air and allow it to flow through an outlet opening lying parallel to the metal sheet. If the distance between the sheet metal plate and the outlet opening is small enough, paradoxically, there is a suction effect which holds the metal sheet on the suction element, although no contact occurs between the metal sheet and the suction element.

Der Vorteil solcher auch als Blas-Saugelemente bezeichenbaren Saugelementen besteht darin, dass sie sehr kostengünstig herstellbar sind, da deren Geometrie sehr einfach ausgestaltet sein kann. Letztlich ist es nur erforderlich, die zugeführte Druckluft senkrecht zur Blechtafel-Oberfläche ausströmen zu lassen, wobei die Druckluft nach dem Ausströmen möglichst gleichmäßig in alle Richtungen innerhalb einer Ebene abfließen sollte.The advantage of such suction elements, which can also be referred to as blow-suction elements, is that they can be produced very inexpensively, since their geometry can be configured very simply. Ultimately, it is only necessary to allow the supplied compressed air to flow out perpendicular to the plate surface, wherein the compressed air after flowing should flow as evenly as possible in all directions within a plane.

Ein weiterer Vorteil ist darin zu sehen, dass keine Einrichtung zum Erzeugen eines Vakuums vorgesehen werden muss, was bei einem Einsatz von "klassischen" Saugelementen erforderlich wäre. Vielmehr kann die üblicherweise sowieso vorhandene Druckluft auch zum "Saugen" verwendet werden.Another advantage is the fact that no means for generating a vacuum must be provided, which would be required for a use of "classic" suction elements. Rather, the usually available anyway compressed air can also be used for "sucking".

Ferner besteht ein großer Vorteil der erfindungsgemäßen Blechtafel-Saugvorrichtung auch darin, dass die Saugelemente die Blechtafeln zwar ansaugen und von der darunterliegenden Blechtafel abheben, eine Berührung zwischen Blechtafel-Oberfläche und Saugelement aber nicht zulassen. Damit läßt sich eine Beschädigung der Oberfläche der Blechtafel verhindern. Vielmehr kann im angesaugten Zustand die Blechtafel weiter in Transportrichtung transportiert werden, da sich ein Luftpolster zwischen den Saugelementen und der Blechtafel bildet und sich praktisch keine Kräfte quer zur Saugrichtung einstellen.Furthermore, there is a great advantage of the sheet-metal suction device according to the invention also in that the suction elements while sucking the metal sheets and stand out from the underlying metal sheet, but do not allow contact between metal sheet surface and suction. This can prevent damage to the surface of the metal sheet. Rather, in the sucked state, the metal sheet can be transported further in the transport direction, as an air cushion between the suction elements and the metal sheet forms and set virtually no forces transverse to the suction direction.

Schließlich besitzt die erfindungsgemäße Blechtafel-Saugvorrichtung den Vorteil, dass es sich um ein System handelt, das leicht zur Nachrüstung bestehender Transportsysteme eingesetzt werden kann.Finally, the sheet panel suction device according to the invention has the advantage that it is a system that can be easily used for retrofitting existing transport systems.

Bei einer bevorzugten Ausführungsform weist die Halteeinrichtung eine erste Traverse auf, die sich im wesentlichen über die gesamte Breite des Auflagetisches erstreckt, und sind zwei Führungsleisten vorgesehen, die an den beiden Seiten des Auflagetisches anbringbar sind und die dazu ausgelegt sind, die Traverse in Transportrichtung verlagerbar zu halten.In a preferred embodiment, the holding device has a first traverse, which extends over substantially the entire width of the support table, and two guide rails are provided, which are attachable to the two sides of the support table and which are adapted to the cross member displaced in the transport direction to keep.

Das heißt mit anderen Worten, dass die Traverse vergleichbar einem Schlitten in den Führungsleisten als Führungsschienen in unterschiedlichste Positionen in Transportrichtung gebracht werden kann. Auf diese Weise lassen sich die an der Traverse angebrachten Saugelemente in eine optimale Position abhängig von dem verwendeten Blechtafel-Format bringen.In other words, that means that the traverse can be brought into a variety of positions in the transport direction as a guide rails in a similar manner to a carriage in the guide rails. In this way, the attached to the cross member suction elements can bring in an optimal position depending on the sheet metal plate format used.

Der Vorteil ist unter anderem darin zu sehen, dass eine Anpassung an unterschiedliche Blechtafeln sehr einfach möglich ist. Darüber hinaus ist es über dieses "Schienen"-System denkbar, die Traverse und damit die Saugelemente während des Ansaugvorgangs und damit Haltevorgangs einer Blechtafel in Transportrichtung zu bewegen, um die Blechtafel besser und ungestörter aus dem Schuppenstrom zu lösen.The advantage is to be seen, inter alia, that an adaptation to different metal sheets is very easy. In addition, it is conceivable through this "rail" system to move the traverse and thus the suction elements during the intake and thus holding a metal sheet in the transport direction to solve the metal sheet better and undisturbed from the scale flow.

Bei einer bevorzugten Ausführungsform sind die Saugelemente an der Traverse zumindest rechtwinklig zur Transportrichtung, vorzugsweise auch in Transportrichtung, verlagerbar angeordnet.In a preferred embodiment, the suction elements on the traverse at least at right angles to the transport direction, preferably arranged in the transport direction, displaced.

Das heißt mit anderen Worten, dass sich die Position der Saugelemente relativ zur Traverse verändern läßt. Damit erreicht man den Vorteil, dass eine sehr genaue Anpassung an die anzuhebenden Blechtafeln möglich wird.In other words, that means that the position of the suction elements can be changed relative to the traverse. This achieves the advantage that a very accurate adaptation to the sheet metal panels to be lifted is possible.

Bei einer bevorzugten Ausführungsform weist die Halteeinrichtung eine zweite Traverse auf, die in Transportrichtung gesehen hinter der ersten Traverse angeordnet ist und an der zumindest zwei Saugelemente, vorzugsweise spiegelsymmetrisch zur Mittellängsachse angebracht sind.In a preferred embodiment, the holding device has a second traverse, which, viewed in the transport direction, is arranged behind the first traverse and on which at least two suction elements are mounted, preferably mirror-symmetrically to the central longitudinal axis.

Das Vorsehen einer zweiten Traverse bietet den Vorteil, die erforderlichen Saugelemente zum Anheben einer Blechtafel noch besser - über die Fläche einer Blechtafel gesehen - verteilen zu können. Ein sicheres Anheben der Blechtafel wird damit sicherer gewährleistet.The provision of a second traverse has the advantage of being able to distribute the required suction elements for lifting a metal sheet even better - viewed over the surface of a metal sheet. A secure lifting of the metal sheet is thus ensured safer.

Bei einer bevorzugten Ausführungsform ist ein Magnetventil vorgesehen, das zwischen Saugelementen und Drucklufteinrichtung liegt, um den Druckluftstrom zu den Saugelementen gesteuert ein- und auszuschalten.In a preferred embodiment, a solenoid valve is provided, which is located between suction elements and compressed air device to the compressed air flow to the suction elements controlled on and off.

Diese Maßnahme hat unter anderem den Vorteil, dass die Saugvorrichtung nicht ständig in Betrieb sein muss, sondern bspw. nur dann aktiviert wird, wenn Scroll-Blechtafeln verarbeitet werden sollen. Darüber hinaus lassen sich die Saugelemente gesteuert "ein-" und "aus-"schalten, was ein gezielteres kontrollierteres Anheben von Blechtafeln zuläßt.This measure has, inter alia, the advantage that the suction device does not have to be constantly in operation, but, for example, is only activated when scrolled metal sheets are to be processed. In addition, the suction elements can be controlled "on" and "off" switch, which allows a more targeted controlled lifting of metal sheets.

Bei einer bevorzugten Ausführungsform ist ein Druckventil vorgesehen, das einerseits mit den Saugelementen verbunden ist und andererseits mit der Drucklufteinrichtung verbindbar ist, um den Druck der Druckluft zu den Saugelementen vorzugsweise manuell einzustellen.In a preferred embodiment, a pressure valve is provided which is connected on the one hand to the suction elements and on the other hand connected to the compressed air device in order to set the pressure of the compressed air to the suction preferably manually.

Diese Maßnahme hat den Vorteil, dass sich die Saugkraft vom Anwender sehr einfach über das Druckventil einstellen läßt, um damit auf unterschiedliche Blechtafel-Eigenschaften reagieren zu können. Selbstverständlich ist es auch denkbar, das Einstellen des Drucks über das Druckventil automatisch, bspw. über eine Steuerung oder Regelung, durchzuführen.This measure has the advantage that the suction force can be set by the user very easily via the pressure valve in order to be able to react to different sheet metal properties. Of course, it is also conceivable to automatically adjust the pressure via the pressure valve, for example via a control or regulation.

Bei einer bevorzugten Ausführungsform sind zumindest vier Saugelemente an der ersten Traverse vorgesehen, wobei zumindest zwei Saugelemente im - rechtwinklig zur Transportrichtung gesehen - seitlichen Bereich und zumindest zwei Saugelemente im mittleren Bereich angeordnet sind. Vorzugsweise sind die Saugelemente im äußeren Bereich und die Saugelemente im mittleren Bereich - in Transportrichtung gesehen - versetzt zueinander angeordnet.In a preferred embodiment, at least four suction elements are provided on the first traverse, wherein at least two suction elements in the - viewed at right angles to the transport direction - lateral region and at least two suction elements are arranged in the central region. Preferably, the suction elements in the outer region and the suction elements in the central region - as seen in the transport direction - offset from one another.

Diese Anordnung der einzelnen Saugelemente hat sich im Hinblick auf das Anheben einer Blechtafel als besonders vorteilhaft herausgestellt. Insbesondere ist es vorteilhaft, die Saugelemente an - in Transportrichtung gesehen - unterschiedlichen Positionen der Blechtafel angreifen zu lassen. Das Absinken eines Endes der Blechtafel läßt sich über die verteilte Anordnung der Saugelemente damit eher vermeiden.This arrangement of the individual suction elements has been found to be particularly advantageous with regard to the lifting of a metal sheet. In particular, it is advantageous to let the suction elements - as seen in the transport direction - attack different positions of the metal sheet. The dropping of one end of the metal sheet can thus rather avoid the distributed arrangement of the suction elements.

Bei einer bevorzugten Ausführungsform weist jedes Saugelement einen zylindrischen Aufbau auf, wobei vorzugsweise eine mit der Drucklufteinrichtung verbindbare Einlaßöffnung im Saugelement vorgesehen ist, die über einen Kanal mit der Auslaßöffnung verbunden ist. Vorzugsweise ist die Einlaßöffnung in einer dem Boden gegenüberliegenden Deckfläche des Saugelements vorgesehen. Weiter bevorzugt hat der Kanal unterschiedliche Strömungsquerschnitte, insbesondere Durchmesser. Vorzugsweise besitzt ein der Auslaßöffnung benachbarter Abschnitt des Kanals einen größeren Durchmesser als ein entfernt davon liegender Abschnitt.In a preferred embodiment, each suction element has a cylindrical construction, wherein preferably a connectable to the compressed air inlet port is provided in the suction member, which is connected via a channel with the outlet opening. Preferably, the inlet opening is provided in a cover surface opposite the bottom of the suction element. More preferably, the channel has different flow cross sections, in particular diameter. Preferably, a portion of the channel adjacent the outlet opening has a larger diameter than a portion remote therefrom.

Diese Maßnahmen haben zum Ergebnis, dass ein äußerst einfaches Saugelement erzielbar ist, das mit geringem Kostenaufwand hergestellt werden kann. Es handelt sich letztlich nur um einen bspw. rotationssymmetrischen Körper, mit einer möglichst ebenen Bodenfläche, in die ein Kanal mündet, der auf seiner gegenüberliegenden Seite mit Druckluft beaufschlagt werden kann. Insgesamt können die Saugelemente der vorliegenden Erfindung einfacher aufgebaut sein als die "klassischen" Saugelemente, die mit Unterdruck beaufschlagt werden müssen.These measures have the result that an extremely simple suction element can be achieved, which can be produced at low cost. It is ultimately only an example. Rotationally symmetrical body, with a flat surface as flat as possible, into which a channel opens, which can be acted upon with compressed air on its opposite side. Overall, the suction elements of the present invention may be simpler in construction than the "classic" suction elements, which must be subjected to negative pressure.

Die Geometrie der Saugelemente kann sehr unterschiedlich ausgestaltet sein, wobei einige Beispiele nachfolgend listenartig angegeben sind. So kann bspw. von einem zylindrischen Aufbau des Saugelements abgewichen werden, oder bspw. von einer kreisförmigen Auslaßöffnung oder einem einzigen durch das Saugelement hindurchgehenden Kanal. Ein der Auslaßöffnung benachbarter Abschnitt des Kanals kann einen größeren Durchmesser besitzen als ein entfernt davon liegender Abschnitt. Die die Auslaßöffnung umgebende Fläche des Bodens kann zumindest zu einer Achse spiegelsymmetrisch ist. Der Boden kann kreisförmig sein. Der Boden kann an seinem Umfangsrand eine Fase aufweisen, vorzugsweise von 30°. Die Auslaßöffnung kann eine Fase aufweisen, vorzugsweise von 30°. Das Saugelement kann mehrere Auslaßöffnungen im Boden aufweisen. Mehrere Saugelemente können vorgesehen sein. Die Saugelemente können derart angeordnet sein, dass deren Auslaßöffnungen auf einer Linie liegen. Die Saugelemente können derart angeordnet sein, dass deren Auslaßöffnungen abwechselnd versetzt zu einer Linie liegen. An der Außenseite des Bodens können Strömungsleitelemente vorgesehen sind. Die Strömungsleitelemente können von der Auslaßöffnung nach außen verlaufende Erhebungen sein. Stromabwärts der Auslaßöffnung kann ein Strömungsumlenkelement vorgesehen sein, das die Strömung in eine Richtung parallel zum Boden umlenkt. Stromaufwärts der Auslaßöffnung kann im Saugelement zumindest ein Strömungsgleichrichter vorgesehen ist.The geometry of the suction elements can be made very different, with some examples are listed below like a list. Thus, for example, may be deviated from a cylindrical structure of the suction element, or, for example, from a circular outlet opening or a single channel passing through the suction element. An outlet portion of the adjacent channel portion may have a larger diameter than a portion remote therefrom. The surface surrounding the outlet opening of the bottom can be mirror-symmetrical at least to one axis. The floor can be circular. The bottom may have a bevel at its peripheral edge, preferably of 30 °. The outlet opening may have a chamfer, preferably of 30 °. The suction element may have a plurality of outlet openings in the bottom. Several suction elements can be provided. The suction elements may be arranged such that their outlet openings are in line. The Suction elements may be arranged such that their outlet openings are alternately offset from a line. On the outside of the bottom flow guide elements are provided. The flow guide may be from the outlet opening outwardly extending elevations. Downstream of the outlet opening may be provided a Strömungsumlenkelement which deflects the flow in a direction parallel to the ground. Upstream of the outlet opening, at least one flow rectifier can be provided in the suction element.

Als besonders vorteilhaft hat sich herausgestellt, das Verhältnis zwischen der Querschnittsfläche der Auslaßöffnung und der Projektionsfläche des Bodens zwischen 0,01 bis 0,1 zu wählen, vorzugsweise im Bereich von 0,05.To be particularly advantageous has been found to choose the ratio between the cross-sectional area of the outlet opening and the projection surface of the soil between 0.01 to 0.1, preferably in the range of 0.05.

Die der Erfindung zugrundeliegende Aufgabe wird auch von einem Transportsystem zum Transport von Blechtafeln in eine Blechdruck- oder Blechlackiermaschine gelöst, die zumindest eine Blechtafel-Saugvorrichtung verwendet, wie sie zuvor erläutert wurde.The object underlying the invention is also achieved by a transport system for transporting metal sheets in a sheet metal or sheet metal painting machine, which uses at least one sheet panel suction device, as previously explained.

Dem erfindungsgemäßen Transportsystem kommen die gleichen Vorteile zu wie der zuvor beschriebenen Blechtafel-Saugvorrichtung, so dass eine nochmalige Aufzählung dieser Vorteile entbehrlich ist.The transport system according to the invention has the same advantages as the metal sheet suction device described above, so that a repeated enumeration of these advantages is unnecessary.

Weitere Vorteile und Ausgestaltungen der Erfindung ergeben sich aus der Beschreibung und der beiliegenden Zeichnung.Further advantages and embodiments of the invention will become apparent from the description and the accompanying drawings.

Es versteht sich, dass die vorstehend genannten und die nachstehend noch zu erläuternden Merkmale nicht nur in der jeweils angegebenen Kombination, sondern auch in anderen Kombinationen oder in Alleinstellung verwendbar sind, ohne den Rahmen der vorliegenden Erfindung zu verlassen.It is understood that the features mentioned above and those yet to be explained below can be used not only in the particular combination given, but also in other combinations or in isolation, without departing from the scope of the present invention.

Die Erfindung wird nun anhand von Ausführungsbeispielen unter Bezugnahme auf die begleitenden Zeichnungen näher erläutert. Dabei zeigen:

Fig. 1
eine perspektivische Ansicht eines erfindungsgemäßen Transportsystems mit einer erfindungsgemäßen Blechtafel-Saugvorrichtung;
Fig. 2
eine schematische Darstellung von sog. Scroll-Blechtafeln;
Fig. 3a, b
zwei schematische Darstellungen eines erfindungsgemäßen Saugelements;
Fig. 4a, b
zwei schematische Darstellungen einer weiteren Ausgestaltung eines erfindungsgemäßen Saugelements;
Fig. 5a, b, c
schematische Darstellungen von drei weiteren Ausgestaltungen des erfindungsgemäßen Saugelements;
Fig. 6a, b
schematische Schnittdarstellungen von zwei unterschiedlichen Ausgestaltungen eines Druckluftkanals in einem Saugelement;
Fig. 7a-f
unterschiedliche Ausgestaltungen der Auslaßöffnung des erfindungsgemäßen Saugelements;
Fig. 8a-h
schematische Schnittdarstellungen unterschiedlicher Ausgestaltungen des Druckluftkanals innerhalb eines Saugelements;
Fig. 9a-h
schematische Darstellungen unterschiedlicher Anordnungen mehrerer erfindungsgemäßer Saugelemente; und
Fig. 10a-d
schematische Darstellungen weiterer Ausgestaltungen des Saugelements.
The invention will now be explained in more detail by means of embodiments with reference to the accompanying drawings. Showing:
Fig. 1
a perspective view of a transport system according to the invention with a metal sheet suction device according to the invention;
Fig. 2
a schematic representation of so-called. Scroll metal sheets;
Fig. 3a, b
two schematic representations of a Saugelements invention;
Fig. 4a, b
two schematic representations of another embodiment of a Saugelements invention;
Fig. 5a, b, c
schematic representations of three further embodiments of the invention Saugelements;
Fig. 6a, b
schematic sectional views of two different embodiments of a compressed air channel in a suction element;
Fig. 7a-f
different embodiments of the outlet opening of the suction element according to the invention;
Fig. 8a-h
schematic sectional views of different embodiments of the compressed air channel within a suction element;
Fig. 9a-h
schematic representations of different arrangements of several inventive suction elements; and
Fig. 10a-d
schematic representations of further embodiments of the Saugelements.

In Fig. 1 ist ein Transportsystem dargestellt und mit dem Bezugszeichen 10 gekennzeichnet. Dieses Transportsystem 10 dient dazu, tafelförmige Güter, insbesondere Blechtafeln in eine Richtung T von einem Ende des Transportsystems zum gegenüberliegenden Ende zu transportieren. Neben dem Transport der Blechtafel kommt dem Transportsystem 10 auch die Aufgabe zu, die Blechtafel auszurichten sowohl seitlich als auch hinsichtlich der Vorderkante der Blechtafel. Das Transportsystem 10 ist nämlich ein Bestandteil einer Blechtafel-Druckmaschine oder Blechtafel-Lackiermaschine und ist unmittelbar vor einer sog. Anlegetrommel mit Anlegemarken und Greifern vorgesehen. Durch das Ausrichten der Blechtafel im Transportsystem 10 soll eine positionsgenaue und reproduzierbare Übergabe an die Anlegetrommel erfolgen, die ihrerseits die Blechtafel paßgenau einem Walzwerk zum Bedrucken der Oberfläche der Blechtafel zuführt.In Fig. 1 a transport system is shown and designated by the reference numeral 10. This transport system 10 serves to transport tabular goods, in particular metal sheets, in a direction T from one end of the transport system to the opposite end. In addition to the transport of the metal sheet, the transport system 10 also has the task of aligning the metal sheet both laterally and with respect to the leading edge of the metal sheet. Namely, the transport system 10 is a part of a sheet metal printing machine or sheet metal painting machine and is provided immediately before a so-called feed drum with positioning marks and grippers. By aligning the metal sheet in the transport system 10 is a positionally accurate and reproducible transfer to the feed drum to be done, which in turn feeds the metal sheet in registration to a rolling mill for printing the surface of the metal sheet.

Da die grundsätzliche Funktion eines solchen Transportsystems 10 bekannt ist, bspw. aus der Druckschrift EP 1 749 773 A2 , soll an dieser Stelle nicht weiter darauf eingegangen werden, sondern es wird vielmehr auf den entsprechenden Offenbarungsgehalt der vorgenannten Druckschrift verwiesen. Im Übrigen werden Transportsysteme 10 in Anlagen der Anmelderin mit der Produktbezeichnung "Sprint®" eingesetzt, so dass auch darauf verwiesen werden kann.Since the basic function of such a transport system 10 is known, for example. From the document EP 1 749 773 A2 , shall not be discussed further at this point, but rather it is referred to the corresponding disclosure of the aforementioned document. Incidentally, transport systems 10 are used in systems of the applicant with the product name "Sprint®", so that it can also be referred to.

Allgemein umfaßt ein Transportsystem 10, das häufig auch als Blechtafel-Anlegevorrichtung bezeichnet wird, einen Auflagetisch 12 mit einer Mittellängsachse M sowie Transportbänder 14 und ggf. Saugbänder 16. Sehr häufig tragen die Transportbänder 14 sog. Vorderkantenanschläge, an denen die Vorderkanten der Blechtafeln anliegen. Die Saugbänder 16 dienen dazu, die Blechtafeln gegen die Anlegemarken der Anlegetrommel zu schieben, um eine positionsgenaue Anlage zu erzielen.In general, a transport system 10, which is often referred to as a sheet metal applicator, a support table 12 with a central longitudinal axis M and conveyor belts 14 and possibly suction belts 16. Very often carry the conveyor belts 14 so-called front edge stops, against which the leading edges of the metal sheets. The suction belts 16 serve to push the metal sheets against the application marks of the feed drum to achieve a positionally accurate investment.

Wie bereits erwähnt, werden die Blechtafeln vom Transportsystem 10 auch seitlich ausgerichtet, wobei hierfür Seitenmarken 18 vorgesehen sind, die mit den Seitenkanten der Blechtafel zusammenwirken. Die Seitenmarken 18 sind an einem Ende des Transportsystems 10 angeordnet und wirken in bekannter Weise, so dass darauf nicht weiter eingegangen werden muss.As already mentioned, the metal sheets are also laterally aligned by the transport system 10, with side marks 18 being provided for this purpose, which interact with the side edges of the metal sheet. The side marks 18 are arranged at one end of the transport system 10 and act in a known manner, so that it need not be discussed further.

Das in Fig. 1 gezeigte Transportsystem 10 ist als eigenständige Einheit ausgebildet und läßt sich innerhalb einer Blechdruck- bzw. Blechlackiermaschine jederzeit als modulare Einheit austauschen.This in Fig. 1 shown transport system 10 is formed as an independent unit and can be exchanged at any time as a modular unit within a sheet metal or sheet metal painting machine.

Das Transportsystem 10 umfaßt auch eine Blechtafel-Saugvorrichtung 30, die ebenfalls als auswechselbare Einheit vorgesehen ist, so dass bestehende Transportsystems 10 damit bspw. nachgerüstet werden können. Die Blechtafel-Saugvorrichtung 30, die nachfolgend nur noch als Saugvorrichtung bezeichnet wird, weist eine erste Traverse 32 auf, die sich über die gesamte Breite des Auflagetisches 12 erstreckt und vorzugsweise einen Profilträger umfaßt. Die erste Traverse 32 ist an ihren beiden Enden an Schlitten 34 angebracht, die ihrerseits in Führungsschienen 36 geführt sind. Die Führungsschienen 36 sind seitlich zu beiden Seiten des Auflagetisches 12 angebracht derart, dass die erste Traverse in Transportrichtung T (oder entgegengesetzt dazu) verlagerbar ist, wobei der Abstand der ersten Traverse zu dem Auflagetisch 12 konstant bleibt. Die erste Traverse 32 bewegt sich folglich in einer Ebene, die parallel zur Ebene des Auflagetisches 12 und damit der Transportebene der Blechtafeln ist.The transport system 10 also includes a sheet panel suction device 30, which is also provided as a replaceable unit, so that existing transport system 10 so that, for example, can be retrofitted. The sheet-metal suction device 30, which is hereinafter referred to only as a suction device, has a first traverse 32 which extends over the entire width of the support table 12 and preferably comprises a profile carrier. The first traverse 32 is attached at its two ends to carriage 34, which in turn are guided in guide rails 36. The guide rails 36 are laterally mounted on both sides of the support table 12 such that the first cross member in the transport direction T (or opposite thereto) is displaceable, wherein the distance of the first cross member to the support table 12 remains constant. The first traverse 32 thus moves in a plane which is parallel to the plane of the support table 12 and thus the transport plane of the metal sheets.

An der ersten Traverse 32 sind mehrere, im vorliegenden Ausführungsbeispiel vier Saugelemente 40 vorgesehen, die an Auslegern 42 befestigt sind. Die Ausleger 42 sind rechtwinklig zur ersten Traverse angeordnet und lassen sich vorzugsweise relativ zur ersten Traverse und in Transportrichtung T verschieben. Jeweils an dem der Traverse gegenüberliegenden Ende eines Auslegers 42 ist ein Saugelement 40 angebracht, wobei die Befestigung vorzugsweise so erfolgt, dass das Saugelement relativ zum Ausleger 42 verschiebbar ist. Damit läßt sich der Abstand des Saugelements zur ersten Traverse 32 einstellen.At the first cross member 32 a plurality of, in the present embodiment, four suction elements 40 are provided which are fixed to arms 42. The booms 42 are arranged at right angles to the first traverse and can preferably be displaced relative to the first traverse and in the transport direction T. Each at the opposite end of the traverse arm 42, a suction member 40 is attached, wherein the attachment preferably takes place so that the suction member is displaceable relative to the boom 42. Thus, the distance of the suction element to the first cross member 32 can be adjusted.

Die Saugelemente 40 sind naturgemäß so angeordnet, dass deren "Saugseite" nach unten zum Auflagetisch 12 gerichtet ist. Im vorliegenden Ausführungsbeispiel sind die vier an der ersten Traverse 32 angebrachten Saugelemente 40 so angebracht, dass die beiden äußeren Saugelements 40 einen etwas größeren Abstand zur ersten Traverse haben als die beiden innenliegenden Saugelemente 40. Die äußeren Saugelemente 40 und die inneren Saugelemente 40 liegen jeweils auf einer Linie, die parallel zur ersten Traverse 32 ist.The suction elements 40 are naturally arranged so that their "suction side" is directed down to the support table 12. In the present embodiment, the four attached to the first cross member 32 suction members 40 are mounted so that the two outer Saugelements 40 have a slightly greater distance from the first cross member than the two inner suction elements 40. The outer suction elements 40th and the inner suction members 40 each lie on a line parallel to the first cross member 32.

Es versteht sich, dass die beschriebene Anordnung der vier Saugelemente 40 rein beispielhaft ist und üblicherweise vom Format der verwendeten Blechtafeln abhängt. Durch die Verlagerbarkeit der Saugelemente 40 sowohl in Transportrichtung als auch senkrecht dazu ist eine Anpassung an unterschiedliche Blechtafelformate sehr schnell und einfach möglich. Üblicherweise werden die Saugelemente spiegelsymmetrisch zur Mittellängsachse M angeordnet, um ein gleichmäßiges Anheben der Blechtafel zu erreichen. Selbstverständlich sind auch andere unsymmetrische Anordnungen denkbar, wenn dies die konkrete Anwendung erfordert, bspw. aufgrund einer besonderen Beschaffenheit der Blechtafel.It is understood that the described arrangement of the four suction elements 40 is purely exemplary and usually depends on the format of the sheet metal plates used. Due to the displaceability of the suction elements 40 both in the transport direction and perpendicular to an adaptation to different metal sheet formats very quickly and easily possible. Usually, the suction elements are arranged mirror-symmetrically to the central longitudinal axis M in order to achieve a uniform lifting of the metal sheet. Of course, other asymmetrical arrangements are conceivable, if this requires the specific application, for example. Due to a special nature of the metal sheet.

Selbstverständlich wäre es auch denkbar, die Ausleger direkt am Auflagetisch vorzugsweise auch in Transportrichtung verlagerbar anzubringen, so dass auf eine Traverse als Teil einer Halteeinrichtung verzichtet werden könnte. Die Saugelemente wären dann über die Ausleger am Auflagetisch befestigt.Of course, it would also be conceivable to attach the boom directly to the support table preferably also displaceable in the transport direction, so that it would be possible to dispense with a crossbeam as part of a holding device. The suction elements would then be attached via the boom on the support table.

An der ersten Traverse 32 sind noch Druckluftverteiler 58 vorgesehen, die einerseits mit einer nicht dargestellten Drucklufterzeugungsvorrichtung, bspw. einem Kompressor verbunden sind, und andererseits diese Druckluft über- nicht dargestellte - Schlauchverbindungen an die Saugelemente führen. Die Saugelemente 40 verfügen hierfür über Schlauchkupplungsanschlüsse, so dass die Druckluftschläuche leicht angeschlossen und entfernt werden können.At the first cross member 32 compressed air manifolds 58 are still provided, which are on the one hand connected to a compressed air generating device, for example. A compressor, and on the other hand this compressed air not shown - hose connections lead to the suction elements. The suction elements 40 have for this purpose via hose coupling connections, so that the compressed air hoses can be easily connected and removed.

Zu der beschriebenen Blechtafel-Saugvorrichtung 30 gehört auch eine zweite Traverse 38, die sich ebenfalls über die gesamte Breite des Auflagetischs 12 erstreckt, aber im Gegensatz zu der ersten Traverse ortsfest am Auflagetisch 12 angebracht ist. Allerdings läßt sich die zweite Traverse 38 leicht vom Auflagetisch 12 lösen bzw. anbringen, so dass ein Nachrüsten eines Auflagetischs 12 einfach möglich ist.To the sheet metal sheet suction device 30 described also includes a second cross member 38, which also extends over the entire width of the support table 12, but in contrast to the first traverse is fixedly mounted on the support table 12. However, the second cross member 38 can be easily detached or attached from the support table 12, so that a retrofitting of a support table 12 is easily possible.

Die zweite Traverse 38 ist, wie in Fig. 1 deutlich zu erkennen, am Ende (in Transportrichtung gesehen) des Auflagetischs 12 angeordnet, so dass die zweite Traverse in Transportrichtung gesehen hinter der ersten Traverse 32 liegt.The second traverse 38 is, as in Fig. 1 clearly visible, arranged at the end (in the transport direction) of the support table 12, so that the second traverse seen in the transport direction is behind the first cross member 32.

Die zweite Traverse 38, die im vorliegenden Ausführungsbeispiel als rohrförmige Stange ausgebildet ist, trägt weitere Saugelemente 40, im vorliegenden Ausführungsbeispiel insgesamt zwei Saugelemente 40. Diese Saugelemente 40 sind auf der zweiten Traverse 38 rechtwinklig zur Transportrichtung T verschiebbar angeordnet, so dass eine individuelle Einstellung des Orts der Saugelemente 40 möglich ist. Im vorliegenden Ausführungsbeispiel liegen die beiden Saugelemente 40 jeweils auf einer Linie parallel zur Transportrichtung mit einem äußeren Saugelement 40 der ersten Traverse 32.The second cross member 38, which is formed in the present embodiment as a tubular rod, carries further suction elements 40, in the present embodiment, a total of two suction elements 40. These suction elements 40 are arranged displaceable on the second cross member 38 perpendicular to the transport direction T, so that an individual adjustment of Location of the suction elements 40 is possible. In the present exemplary embodiment, the two suction elements 40 each lie on a line parallel to the transport direction with an outer suction element 40 of the first crosspiece 32.

Schließlich umfaßt die Blechtafel-Saugvorrichtung 30 noch zwei weitere Saugelemente 40, die im Bereich der Seitenmarken 18 angeordnet sind und von Auslegern 42 gehalten werden. Die Ausleger 42 erstrecken sich senkrecht zur Transportrichtung, so dass eine Verlagerung der Saugelemente 40 senkrecht zur Transportrichtung und relativ zu den Auslegern 42 möglich ist. Da die Seitenmarken 18 senkrecht zur Transportrichtung verlagerbar sind, um auf unterschiedliche Blechtafelformate reagieren zu können, werden die Ausleger 42 mit den Saugelementen mit verlagert, wenn die Seitenmarken eingestellt werden.Finally, the sheet-plate suction device 30 comprises two further suction elements 40, which are arranged in the region of the side marks 18 and are held by arms 42. The arms 42 extend perpendicular to the transport direction, so that a displacement of the suction elements 40 perpendicular to the transport direction and relative to the arms 42 is possible. Since the side markers 18 are displaceable perpendicular to the transport direction in order to be able to react to different sheet metal plate formats, the arms 42 are displaced with the suction elements when the side marks are adjusted.

Die Fig. 1 läßt noch eine Blasdüse 52 erkennen, die an der ersten Traverse 32 angebracht ist und in Transportrichtung T ausgerichtet ist. Die Blasdüse 52 dient dazu, Druckluft in Richtung der Hinterkante einer vorbeilaufenden Blechtafel zu blasen, um das Abheben von geschuppt ankommenden Blechtafeln zu verbessern. Es versteht sich, dass an der Traverse 32 nicht nur die eine gezeigte Blasdüse 52, sondern vielmehr zumindest eine weitere Blasdüse angebracht ist.The Fig. 1 can still recognize a tuyere 52, which is attached to the first cross member 32 and is aligned in the transport direction T. The blowing nozzle 52 serves to blow compressed air in the direction of the trailing edge of a passing metal sheet to improve the lifting of scaled incoming metal sheets. It is understood that on the traverse 32 not only the one shown blowing nozzle 52, but at least one additional blowing nozzle is mounted.

Zu der Blechtafel-Saugvorrichtung 30 gehört neben den vorbeschriebenen Bauelementen vorzugsweise auch ein Druckventil, mit dessen Hilfe sich der Druck der den Saugelementen 40 zugeführten Druckluft einstellen läßt, wobei die Einstellung entweder manuell oder automatisch erfolgt. Darüber hinaus kann ein weiteres Ventil vorgesehen sein, um den den Saugelementen 40 zugeführten Druckluftstrom gesteuert ein- und auszuschalten.To the sheet panel suction device 30 in addition to the above-described components preferably also includes a pressure valve, with the aid of which the pressure of the suction elements 40 supplied compressed air can be adjusted, the adjustment either manually or automatically. In addition, a further valve may be provided to control the suction elements 40 supplied compressed air flow controlled on and off.

Die vorbeschriebene Blechtafel-Saugvorrichtung übt nun folgende Funktion aus:The sheet metal plate suction device described above now performs the following function:

Wie bereits erwähnt, besteht die Hauptaufgabe des Transportsystems 10 darin, eine Blechtafel positionsgenau an die Anlegemarken der nachgeordneten Anlegetrommel zu führen. Hierfür wird der vordere Bereich der Blechtafel über die Saugbänder 16 angesaugt und gegen die Anlegemarken geschoben, wobei es hierbei möglich ist, dass die Saugbänder etwas durchrutschen, wenn die Vorderkante der Blechtafel an den Anlegemarken anliegt.As already mentioned, the main task of the transport system 10 is to guide a metal sheet accurately to the positioning marks of the downstream feed drum. For this purpose, the front portion of the metal sheet is sucked on the suction belts 16 and pushed against the positioning marks, it being possible that the suction belts slip something when the leading edge of the metal sheet rests against the placement marks.

An dieser Stelle sei jedoch angemerkt, dass das Transportsystem 10 statt der Saugbänder auch bspw. sog. Hinterkantenschübe besitzen kann, um die Blechtafel an die Anlegemarken zu führen.It should be noted, however, that instead of the suction belts, the transport system 10 may also have, for example, so-called trailing edge thrusts in order to guide the metal sheet to the placement marks.

Die Blechtafeln erreichen das Transportsystem 10 üblicherweise in Form eines sog. Schuppenstroms, bei dem aufeinanderfolgende Blechtafeln teilweise überlappen. Im Transportsystem 10 wird nun die oberste Blechtafel des Schuppenstroms aus diesem gelöst und der Anlegetrommel zugeführt. Dabei ergibt sich eine Geschwindigkeitsdifferenz zwischen der obersten Blechtafel und der darunterliegenden nachfolgenden Blechtafel. Diese Geschwindigkeitsdifferenz ist normalerweise unkritisch; wenn es sich bei den Blechtafeln jedoch um sog. Scroll-Blechtafeln handelt (bspw. in Fig. 2 gezeigt), können die Seitenränder 22 der übereinanderliegenden Blechtafeln ineinander verhaken, so dass es zu einer Störung kommt.The metal sheets usually reach the transport system 10 in the form of a so-called scale flow, in which successive metal sheets partially overlap. In the transport system 10, the top sheet metal of the scale flow is now released from this and fed to the feed drum. This results in a difference in speed between the top metal sheet and the underlying subsequent sheet metal. This speed difference is usually not critical; when it comes to the Metal sheets, however, are so-called scroll metal sheets (for example, in Fig. 2 shown), the side edges 22 of the superimposed metal sheets can interlock with each other, so that there is a disturbance.

Um dies zu vermeiden, wird die Saugvorrichtung 30 aktiviert, die mit Hilfe der Saugelemente 40 zumindest die Seitenbereiche der obersten Blechtafel von der darunterliegenden Blechtafel abhebt. Hierfür wird den Saugelementen 40 Druckluft zugeführt, die in Richtung der Blechtafel ausgeblasen wird. Befinden sich die Saugelemente 40 in einem bestimmten sehr kleinen Abstand zu der Blechtafel, ergibt sich eine Sogwirkung, die die Blechtafel in Richtung der Saugelemente zieht und damit anhebt.To avoid this, the suction device 30 is activated, which lifts with the help of the suction elements 40 at least the side regions of the uppermost metal sheet from the underlying metal sheet. For this purpose, the suction elements 40 compressed air is supplied, which is blown in the direction of the metal sheet. If the suction elements 40 are located at a certain very small distance from the metal sheet, a suction effect results, which pulls the metal sheet in the direction of the suction elements and thus lifts them.

Beim Ansaugen der Blechtafel gelangt dessen Oberfläche jedoch nicht in direktem Kontakt mit den Saugelementen 40, so dass es sehr leicht und ohne Beschädigung der Oberfläche möglich ist, die Blechtafel über die Saugbänder 16 weiter in Richtung der Anlegemarken der Anlegetrommel zu transportieren. Die Blechtafel gleitet dabei an den Saugelementen 40 in Transportrichtung T entlang und wird gleichzeitig angesaugt.When sucking the metal sheet whose surface does not come into direct contact with the suction elements 40, so that it is very easy and without damaging the surface is possible to transport the metal sheet on the suction belts 16 further in the direction of the application marks the feed drum. The metal sheet slides along the suction elements 40 in the transport direction T along and is sucked at the same time.

Durch dieses leichte Anheben der Blechtafel zumindest in deren seitlichem, vorzugsweise auch im Bereich der Hinterkante der Blechtafel, läßt sich vermeiden, dass die Seitenkanten 22 der oberen Blechtafel mit den Seitenkanten der darunterliegenden Blechtafel verhaken. Durch das Anheben der Hinterkante der Blechtafel kann durch Unterblasen mit Hilfe der Blasdüsen 52 das Anheben der gesamten Blechtafel noch unterstützt werden.By this slight lifting of the metal sheet at least in the lateral, preferably also in the region of the trailing edge of the metal sheet, can be avoided that the side edges 22 of the upper metal sheet hooked with the side edges of the underlying metal sheet. By lifting the trailing edge of the metal sheet can be supported by blowing under the blowing nozzles 52, the lifting of the entire metal sheet still.

Denkbar wäre es auch, die an der ersten Traverse 32 angebrachten Saugelemente 40 nicht nur als Hub- sondern auch als Schlepp-Saugelemente einzusetzen, wobei hierfür die Traverse 32 in Transportrichtung bewegt werden könnte.It would also be conceivable to use the suction elements 40 attached to the first traverse 32 not only as lifting but also as drag-suction elements, for which purpose the traverse 32 could be moved in the transport direction.

Die in dem in Fig. 1 gezeigten Ausführungsbeispiel verwendeten Saugelemente 40 besitzen einen zylindrischen Körper, der in den Figuren 3a und 3b mit den Bezugszeichen 44 gekennzeichnet ist. In diesem zylindrischen Körper 44 ist eine Bohrung 46 vorgesehen, die einen Kanal bildet, der eine Einlaßöffnung 48 mit einer Auslaßöffnung 47 im Boden 45 des zylindrischen Körpers verbindet. Der Kanal 46 hat in dem der Einlaßöffnung 48 zugewandten Abschnitt einen ersten Durchmesser und in seinem der Auslaßöffnung 47 zugewandten Abschnitt einen zweiten Durchmesser, wobei der erste Durchmesser größer ist als der zweite Durchmesser. Dies ist sehr deutlich in der Schnittansicht in Fig. 3b zu erkennen. Der Boden 45 des zylindrischen Körpers 44 ist glatt und eben ausgebildet und liegt bei einem eingebauten Saugelement im Wesentlichen parallel zu dem Auflagetisch und damit zu der anzuhebenden Blechtafel.The in the in Fig. 1 Suction elements 40 used have a cylindrical body, which in the FIGS. 3a and 3b designated by the reference numeral 44. In this cylindrical body 44, a bore 46 is provided, which forms a channel which connects an inlet opening 48 with an outlet opening 47 in the bottom 45 of the cylindrical body. The channel 46 has a first diameter in the portion facing the inlet opening 48 and a second diameter in its portion facing the outlet opening 47, wherein the first diameter is greater than the second diameter. This is very clear in the sectional view in Fig. 3b to recognize. The bottom 45 of the cylindrical body 44 is smooth and flat and lies in a built-suction element is substantially parallel to the support table and thus to the sheet metal to be lifted.

Im Betrieb wird die Druckluft über eine Schlauchverbindung zu der Einlaßöffnung 48 geführt, und strömt dann durch den Kanal 46 durch die Auslaßöffnung 47 nach außen. Liegt die Blechtafel dicht am Boden 45 mit einem sehr kleinen Abstand an, wird die ausströmende Druckluft an der Blechtafel abgelenkt und strömt gleichmäßig nach außen radial ab. Durch die abströmende Druckluft wird ein Unterdruck erzeugt, der dafür sorgt, dass die Blechtafel angesaugt wird, allerdings nicht soweit, dass die Auslaßöffnung 47 abgedeckt wird.In operation, the compressed air is supplied via a hose connection to the inlet opening 48, and then flows through the channel 46 through the outlet opening 47 to the outside. If the metal sheet is close to the bottom 45 with a very small distance, the outflowing compressed air is deflected on the metal sheet and flows evenly radially outwards. By the outflowing compressed air, a negative pressure is generated, which ensures that the metal sheet is sucked, but not so far that the outlet opening 47 is covered.

Das Saugelement 40, wie es in Fig. 3a gezeigt ist, wird bevorzugt aus Kunststoff gefertigt und ist aufgrund der einfachen Geometrie sehr kostengünstig.The suction element 40, as it is in Fig. 3a is shown, is preferably made of plastic and is very inexpensive due to the simple geometry.

Selbstverständlich sind auch andere Formen des Saugelements möglich, ohne dessen Funktion zu beeinträchtigen. In den nachfolgenden Figuren 4 bis 10 sind einige der möglichen Ausgestaltungen von Saugelementen 40 dargestellt, wobei es sich hierbei nicht um eine abschließende Aufzählung handelt. Vielmehr sind auch andere - nicht dargestellte - Formen und Geometrien denkbar solange die aus der Auslaßöffnung 47 abströmende Druckluft einen Unterdruck erzeugen kann.Of course, other forms of Saugelements are possible without affecting its function. In the following FIGS. 4 to 10 some of the possible embodiments of suction elements 40 are shown, this is not a final list. Rather, other - not shown - shapes and geometries are conceivable as long as the effluent from the outlet port 47 compressed air can generate a negative pressure.

So ist in Fig. 4a, b bspw. eine Ausgestaltung des Saugelements 40 dargestellt, bei der sich der Körper aus einem Rohrabschnitt 50 und einer sich daran anschließenden Flanschplatte 49 zusammensetzt. Die Flanschplatte 49 ist kreisförmig ausgebildet, wie in Fig. 4a zu erkennen ist. Neben dieser kreisförmigen Ausbildung, sind selbstverständlich auch andere Formen, wie oval, rechteckig, quadratisch oder mehreckig denkbar, wie in den Figuren 5a, b und c angedeutet ist.So is in Fig. 4a, b For example, an embodiment of the suction element 40 is shown, in which the body is composed of a pipe section 50 and an adjoining flange plate 49. The flange plate 49 is formed circular, as in Fig. 4a can be seen. In addition to this circular design, of course, other shapes, such as oval, rectangular, square or polygonal are conceivable, as in the FIGS. 5a, b and c is indicated.

Die Auslaßöffnung 47 kann am Rand eine Phase aufweisen, wie in Fig. 6a mit dem Bezugszeichen 54 dargestellt ist. Darüber hinaus ist es auch denkbar, den Kanal 46 in mehrere Auslaßöffnungen 47a bis c münden zu lassen, wie bspw. in Fig. 6b dargestellt. Diese mehreren Auslaßöffnungen 47 können dann bspw. kreisförmig angeordnet sein, wie in Fig. 7e dargestellt.The outlet port 47 may have a phase at the edge as in FIG Fig. 6a represented by the reference numeral 54. In addition, it is also conceivable to open the channel 46 into a plurality of outlet openings 47a to c, such as in Fig. 6b shown. These multiple outlet openings 47 can then be arranged, for example, circular, as in Fig. 7e shown.

Die Auslaßöffnung 47 hat üblicherweise einen kreisrunden Querschnitt, wie in Fig. 7a dargestellt ist. Allerdings sind auch andere Querschnitte denkbar, bspw. rechteckig, oval oder sternförmig, wie in den Figuren 7b, 7c bzw. 7d dargestellt ist. Darüber hinaus kann die Auslaßöffnung 47 etwas versetzt von der Mitte M des Körpers 44 angeordnet sein, wie bspw. in Fig. 7f gezeigt.The outlet opening 47 usually has a circular cross section, as in Fig. 7a is shown. However, other cross sections are conceivable, for example. Rectangular, oval or star-shaped, as in the FIGS. 7b, 7c or 7d is shown. In addition, the outlet opening 47 can be arranged slightly offset from the center M of the body 44, such as in Fig. 7f shown.

In den Figuren 8a bis 8h sind weitere Ausgestaltungen des Saugelements 40 dargestellt, wobei sich die einzelnen Ausgestaltungen unter anderem durch die Form des Kanals 46 unterscheiden. So ist es nicht unbedingt notwendig, dass der Kanal 46 sich in eine Richtung erstreckt, wie dies bspw. in Fig. 8f dargestellt ist, sondern der Kanal 46 kann zwei oder mehr Abschnitt aufweisen, die schräg oder rechtwinklig zueinander verlaufen. Darüber hinaus ist es denkbar, dass der erste Abschnitt des Kanals 46 in einen von einem topfförmigen Gehäuse 64 gebildeten Raum 62 mündet, wobei dieser Raum 62 von einer Flanschplatte 49 mit der Auslaßöffnung 47 abgedeckt ist. Diese Ausgestaltung ist bspw. in Fig. 8g gezeigt.In the FIGS. 8a to 8h Further embodiments of the suction element 40 are shown, wherein the individual configurations differ, inter alia, by the shape of the channel 46. So it is not absolutely necessary that the channel 46 extends in one direction, as for example in Fig. 8f but the channel 46 may have two or more sections which are oblique or perpendicular to each other. In addition, it is conceivable that the first portion of the channel 46 opens into a chamber 62 formed by a cup-shaped housing 64, this space 62 being covered by a flange plate 49 with the outlet opening 47. This embodiment is, for example, in Fig. 8g shown.

Wie bereits erwähnt, wird die Druckluft dem Saugelement 40 üblicherweise über einen Schlauch zugeführt, der in der Fig. 8b schematisch dargestellt und mit dem Bezugszeichen 56 gekennzeichnet ist.As already mentioned, the compressed air is supplied to the suction element 40 usually via a hose which in the Fig. 8b is shown schematically and designated by the reference numeral 56.

Weitere Ausgestaltungen des Saugelements 40 sind in den Figuren 10a bis d dargestellt, wobei die in den Figuren 10a und b gezeigte Lösung einen topfförmigen Körper aufweist, dessen Auslaßöffnung 47 größer ist als die gegenüberliegende Einlaßöffnung 48. Auch mit einem solchen Saugelement ist es möglich, eine Blechtafel anzusaugen.Further embodiments of the suction element 40 are in the FIGS. 10a to d represented, wherein in the FIGS. 10a and b solution shown has a pot-shaped body whose outlet opening 47 is larger than the opposite inlet opening 48. Even with such a suction element, it is possible to suck a metal sheet.

Schließlich ist in den Figuren 10c eine Lösung mit einer Auslaßöffnung 47 in Kreisform dargestellt, wobei zusätzlich am Boden Strömungsleitelemente 76 vorgesehen sind, und in Fig. 10d eine Lösung mit einem Strömungsgleichrichter 73 im Kanal 46 und einem Ablenkkörper 72, der im Bereich der Auslaßöffnung 47 angeordnet ist und die ausströmende Druckluft radial nach außen ablenkt.Finally, in the Figures 10c a solution with an outlet opening 47 shown in circular form, wherein additionally provided on the bottom flow guide elements 76, and in Fig. 10d a solution with a flow rectifier 73 in the channel 46 and a baffle 72, which is arranged in the region of the outlet opening 47 and deflects the outflowing compressed air radially outward.

Die zuvor dargestellten Saugelemente 40 werden üblicherweise jeweils alleine einzeln an der Traverse angeordnet, wie dies in Fig. 1 gezeigt ist. Sollte die Saugkraft eines einzelnen Saugelements jedoch in diesem Bereich nicht ausreichen, können mehrere Saugelemente zu einer Saugelement-Anordnung 70 gruppiert werden, wie dies in den Figuren 9a bis h schematisch dargestellt ist.The suction elements 40 shown above are usually each individually arranged individually on the traverse, as in Fig. 1 is shown. However, if the suction force of a single suction element is not sufficient in this area, several suction elements can be grouped into a suction element arrangement 70, as shown in FIGS FIGS. 9a to h is shown schematically.

So lassen sich bspw. mehrere Saugelemente 40 in einer Reihe liegend an Leisten 66 anbringen, wie dies in Fig. 9d gezeigt ist. Hierbei liegen die Auslaßöffnungen 47 in einer Linie.Thus, for example, several suction elements 40 in a row lying on strips 66 attach, as shown in Fig. 9d is shown. In this case, the outlet openings 47 are in a line.

In Fig. 9d ist eine Lösung dargestellt, bei der die Saugelemente 40 wiederum an einer Leiste 66 angebracht sind, allerdings sind benachbarte Saugelemente 40 versetzt zueinander angeordnet, so dass die Auslaßöffnungen 47 ebenfalls versetzt zu einer Linie liegen.In Fig. 9d a solution is shown in which the suction elements 40 are in turn attached to a bar 66, however, adjacent suction elements 40 are offset arranged to each other, so that the outlet openings 47 are also offset from a line.

Neben der Anordnung mehrerer einzelner Saugelemente 40, wie in den Figuren 9a, 9d oder 9g dargestellt ist, können jedoch auch einstückige Saugelement-Anordnungen 70 vorgesehen werden, wie bspw. in den Figuren 9a, 9b, 9e, 9f oder 9h dargestellt. All diesen Lösungen ist gemein, dass neben mehreren kreisförmigen oder schlitzförmigen Auslaßöffnungen 47 auch Durchbrüche 74 vorgesehen sind, die insbesondere dazu dienen sollen, die zwischen Blechtafel und Boden der Saugelement-Anordnung 70 strömende Druckluft abfließen zu lassen.In addition to the arrangement of several individual suction elements 40, as in the FIGS. 9a . 9d or 9g However, one-piece suction element assemblies 70 may be provided, such as in the FIGS. 9a, 9b . 9e, 9f or 9h shown. All these solutions have in common that in addition to a plurality of circular or slot-shaped outlet openings 47 and apertures 74 are provided, which are intended in particular to drain the flowing between metal sheet and the bottom of the suction member assembly 70 compressed air.

Es zeigt sich also, dass es eine große Gestaltungsfreiheit bei den Saugelementen 40 gibt, so dass eine Anpassung an die unterschiedlichsten Gegebenheiten möglich wird. Allerdings ist aufgrund seiner Einfachheit das in der Fig. 3a, b gezeigte Saugelement mit einem zylindrischen Körper 44 das Bevorzugte.It thus turns out that there is a great freedom of design in the suction elements 40, so that an adaptation to a wide variety of circumstances is possible. However, due to its simplicity that is in the Fig. 3a, b shown suction member with a cylindrical body 44 the preferred.

Zusammenfassend ist festzustellen, dass die vorliegende Erfindung eine Blechtafel-Saugvorrichtung 30 vorschlägt, die mit sehr einfachen und damit kostengünstigen Mitteln ein Anheben einer Blechtafel ermöglicht, um damit ein Verhaken von Scroll-Blechtafeln zu vermeiden. Die Saugelemente werden dabei nicht wie üblich mit einem Unterdruck versorgt, sondern vielmehr mit Druckluft, die in jeder Anlage üblicherweise vorhanden ist, so dass keine Kosten für eine Vakuumerzeugungsvorrichtung entstehen.In summary, it should be noted that the present invention proposes a sheet panel suction device 30, which allows a very simple and thus cost-effective means lifting a metal sheet, so as to avoid snagging of scroll metal sheets. The suction elements are not supplied as usual with a negative pressure, but rather with compressed air, which is usually present in each system, so that no cost for a vacuum generating device.

Darüber hinaus haben die vorgeschlagenen Saugelemente die Eigenschaft, dass die Blechtafel nicht soweit angesaugt wird, dass sie den Boden der Saugelemente berühren, so dass auf jeden Fall eine Beschädigung der Blechtafeloberfläche vermieden wird, selbst wenn die Blechtafeln an den Saugelementen vorbei gleiten.In addition, the proposed suction members have the property that the metal sheet is not sucked so far as to touch the bottom of the suction members, so that damage to the sheet panel surface is avoided in any case even if the metal sheets slide past the suction members.

Schließlich ist die erfindungsgemäße Blechtafel-Saugvorrichtung so ausgestaltet, dass sie sich als Nachrüstsatz an bestehenden Transportsystemen mit relativ wenig Aufwand anbringen läßt. Der Aufwand wird insbesondere dann weiter verringert, wenn die Traverse 32 oder die Traverse 38 bereits für bspw. die Blasdüsen 52 vorhanden ist.Finally, the metal sheet suction device according to the invention is designed so that it can be attached as a retrofit kit to existing transport systems with relatively little effort. The effort is further reduced, in particular, when the traverse 32 or the traverse 38 is already present, for example, the tuyeres 52.

Claims (11)

Transportsystem (10) zum Transport von Blechtafeln in eine Blechdruckmaschine oder Blechlackiermaschine, mit einem Auflagetisch, zumindest einem Transportband, einer Drucklufteinrichtung, und zumindest einer Blechtafel-Saugvorrichtung (30), einer Halteeinrichtung (32), die am Auflagetisch (12) anbringbar ist und sich oberhalb des Auflagetischs nach Innen erstreckt, und zumindest zwei Saugelementen (40), die an der Halteeinrichtung (32) beabstandet zum Auflagetisch (12) angebracht sind, wobei jedes Saugelement (40) einen Boden (45) mit zumindest einer Öffnung (47) aufweist, wobei der Boden mit der Öffnung zum Saugen parallel und beabstandet zur Blechtafel gehalten ist, und die mit der Drucklufteinrichtung verbindbar sind, wobei die Öffnung im Boden des Saugelements als Auslaßöffnung (47) für die zugeführte Druckluft dient, wobei die zumindest zwei Saugelemente (40) der Saugvorrichtung in einem geringen Abstand zu der auf dem Auflagetisch (12) liegenden Blechtafel (20) angeordnet sind, um zumindest einen Abschnitt der Blechtafel anzusaugen, und wobei die Blechtafel in einem Schuppenstrom der Vorrichtung zugeführt werden, wobei die zugeführte Druckluft aus der zumindest einen Auslaßöffnung (47) senkrecht zu einer Blechtafel-Oberfläche ausströmt, wobei die Druckluft nach dem Ausströmen gleichmäßig in alle Richtungen innerhalb einer Ebene abfließt.Transport system (10) for transporting metal sheets into a metal printing machine or sheet metal painting machine, comprising a support table, at least one conveyor belt, a compressed air device, and at least one sheet metal suction device (30), a holding device (32) which is attachable to the support table (12) and extending inwardly above the support table, and at least two suction members (40) mounted on the support means (32) spaced from the support table (12), each suction member (40) having a bottom (45) with at least one opening (47). , wherein the bottom with the opening for sucking is held parallel and spaced from the metal sheet, and which are connectable to the compressed air device, wherein the opening in the bottom of the suction element serves as an outlet opening (47) for the supplied compressed air, wherein the at least two suction elements ( 40) of the suction device at a small distance to the lying on the support table (12) sheet metal plate (20) are to suck at least a portion of the metal sheet, and wherein the metal sheet in a scale flow of the device are supplied, wherein the supplied compressed air from the at least one outlet opening (47) flows perpendicular to a metal sheet surface, wherein the compressed air after flowing evenly in all directions within one level drain. Transportsystem nach Anspruch 1, dadurch gekennzeichnet, dass der Abstand des Saugelement (40) zu der Blechtafel einstellbar ist.Transport system according to claim 1, characterized in that the distance of the suction element (40) is adjustable to the metal sheet. Transportsystem nach Anspruch 1, dadurch gekennzeichnet, dass zumindest zwei Saugelemente (40) im - rechtwinklig zur Transportrichtung gesehen - seitlichen Bereich und zumindest zwei Saugelemente (40) im mittleren Bereich angeordnet sind, dass die Saugelemente (40) im äußeren Bereich und die Saugelemente (40) im mittleren Bereich - in Transportrichtung gesehen - versetzt zueinander angeordnet sind, dass bei aktivierter Saugeinrichtung (30) die Saugelemente (40) im äußeren Bereich zumindest Seitenbereiche einer obersten Blechtafel von einer darunterliegenden Blechtafel abhebend angeordnet sind.Transport system according to claim 1, characterized in that at least two suction elements (40) in the - viewed at right angles to the transport direction - lateral region and at least two suction elements (40) are arranged in the central region that the suction elements (40) in the outer region and the suction elements ( 40) in the central region - as seen in the transport direction - are arranged offset to one another that when activated suction device (30), the suction elements (40) in outer area at least side portions of a top metal sheet are arranged lifting from an underlying metal sheet. Transportsystem nach Anspruch 1, dadurch gekennzeichnet, dass die Saugelemente (40) als einzelne Saugelemente (40) ausgebildet sind.Transport system according to claim 1, characterized in that the suction elements (40) are formed as individual suction elements (40). Transportsystem nach Anspruch 1, dadurch gekennzeichnet, dass die Saugelemente (40) einen zylindrischen Körper (44) aufweisen.Transport system according to claim 1, characterized in that the suction elements (40) have a cylindrical body (44). Transportsystem nach Anspruch 1, dadurch gekennzeichnet, dass ein Verhältnis zwischen einer Querschnittsfläche der Auslaßöffnung (47) und einer Projektionsfläche des Bodens zwischen 0,01 und 0,1 ist.Transport system according to claim 1, characterized in that a ratio between a cross-sectional area of the outlet opening (47) and a projection surface of the bottom is between 0.01 and 0.1. Transportsystem nach Anspruch 1, dadurch gekennzeichnet, dass ein Verhältnis zwischen einer Querschnittsfläche der Auslaßöffnung (47) und einer Projektionsfläche des Bodens 0,05 ist.Transport system according to claim 1, characterized in that a ratio between a cross-sectional area of the outlet opening (47) and a projection surface of the bottom is 0.05. Transportsystem nach Anspruch 1, dadurch gekennzeichnet, dass die Saugelemente (40) aus Kunststoff gefertigt sind.Transport system according to claim 1, characterized in that the suction elements (40) are made of plastic. Transportsystem nach Anspruch 1, dadurch gekennzeichnet, dass ein Kanal angeordnet ist, der eine Einlaßöffnung (48) mit der Auslaßöffnung (47) verbindet.Transport system according to claim 1, characterized in that a channel is arranged, which connects an inlet opening (48) with the outlet opening (47). Transportsystem nach Anspruch 9, dadurch gekennzeichnet, dass der Kanal zwei oder mehr Abschnitte aufweist, die schräg oder rechtwinklig zueinander verlaufend angeordnet sind.Transport system according to claim 9, characterized in that the channel has two or more sections which are arranged obliquely or at right angles to each other. Transportsystem nach Anspruch 9, daß ein Strömungsgleichrichter (73) in dem Kanal (46) und ein Ablenkkörper (72) angeordnet ist, daß der Ablenkkörper(72) im Bereich der Auslaßöffnung (47) ausströmende Druckluft radial nach außen ablenkend angeordnet ist.Transport system according to claim 9, characterized in that a flow rectifier (73) in the channel (46) and a baffle (72) is arranged, that the baffle (72) in the region of the outlet opening (47) outflowing compressed air is disposed radially outwardly deflecting.
EP13164825.5A 2008-07-04 2009-07-03 Transport system for transporting sheet panels in a sheet printing or coating device Active EP2620400B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008032684.4A DE102008032684B4 (en) 2008-07-04 2008-07-04 Sheet metal suction device for transporting sheet metal into a metal printing machine or sheet metal painting machine
EP09008750.3A EP2141101B1 (en) 2008-07-04 2009-07-03 Sheet panel suction device and device for transporting sheet panels in a sheet printing or coating device

Related Parent Applications (3)

Application Number Title Priority Date Filing Date
EP09008750.3A Division-Into EP2141101B1 (en) 2008-07-04 2009-07-03 Sheet panel suction device and device for transporting sheet panels in a sheet printing or coating device
EP09008750.3A Division EP2141101B1 (en) 2008-07-04 2009-07-03 Sheet panel suction device and device for transporting sheet panels in a sheet printing or coating device
EP09008750.3 Division 2009-07-03

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EP2620400A1 true EP2620400A1 (en) 2013-07-31
EP2620400B1 EP2620400B1 (en) 2014-05-14

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EP09008750.3A Active EP2141101B1 (en) 2008-07-04 2009-07-03 Sheet panel suction device and device for transporting sheet panels in a sheet printing or coating device
EP13164825.5A Active EP2620400B1 (en) 2008-07-04 2009-07-03 Transport system for transporting sheet panels in a sheet printing or coating device

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DE (1) DE102008032684B4 (en)
ES (2) ES2487844T3 (en)

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Publication number Priority date Publication date Assignee Title
CN103130003A (en) * 2011-11-28 2013-06-05 日高精机株式会社 Feeding apparatus for metal strips

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Publication number Priority date Publication date Assignee Title
ES2537154B1 (en) * 2014-12-29 2016-01-22 Jesús Francisco Barberán Latorre Machine for digital panel printing
DE102018126049B4 (en) 2018-10-19 2020-08-27 Koenig & Bauer Ag Tabular substrate processing machine with a system, method for setting up and method for operating a system

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DE4002324A1 (en) * 1990-01-26 1991-08-01 Bayerische Motoren Werke Ag Stacked metal sheet lifter - has edge suction units and inner spring on carrier to bend top sheet to break adhesion
DE19631175C1 (en) 1996-08-02 1998-01-29 Roland Man Druckmasch Device for feeding sheets to a printing press
DE19756032A1 (en) 1997-12-17 1999-06-24 Koenig & Bauer Ag Separating and transporting paper sheets in printing presses
US20040178567A1 (en) 2003-03-12 2004-09-16 Holger Edinger Method and apparatus for guiding sheets to a sheet processing machine, in particular a printing press
EP1749773A2 (en) 2005-08-06 2007-02-07 LTG Mailänder GmbH & Co. KG Transport system for a metal sheet printing machine or a metal sheet painting machine

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4002324A1 (en) * 1990-01-26 1991-08-01 Bayerische Motoren Werke Ag Stacked metal sheet lifter - has edge suction units and inner spring on carrier to bend top sheet to break adhesion
DE19631175C1 (en) 1996-08-02 1998-01-29 Roland Man Druckmasch Device for feeding sheets to a printing press
DE19756032A1 (en) 1997-12-17 1999-06-24 Koenig & Bauer Ag Separating and transporting paper sheets in printing presses
US20040178567A1 (en) 2003-03-12 2004-09-16 Holger Edinger Method and apparatus for guiding sheets to a sheet processing machine, in particular a printing press
EP1749773A2 (en) 2005-08-06 2007-02-07 LTG Mailänder GmbH & Co. KG Transport system for a metal sheet printing machine or a metal sheet painting machine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103130003A (en) * 2011-11-28 2013-06-05 日高精机株式会社 Feeding apparatus for metal strips
CN103130003B (en) * 2011-11-28 2016-05-18 日高精机株式会社 The feeder unit that metal band-shaped body is used

Also Published As

Publication number Publication date
EP2141101B1 (en) 2014-05-07
ES2478677T3 (en) 2014-07-22
ES2487844T3 (en) 2014-08-25
EP2141101A2 (en) 2010-01-06
EP2620400B1 (en) 2014-05-14
DE102008032684A1 (en) 2010-01-07
EP2141101A3 (en) 2011-03-09
DE102008032684B4 (en) 2023-07-20

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