EP2953874B1 - Appareil de traitement de papier - Google Patents

Appareil de traitement de papier Download PDF

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Publication number
EP2953874B1
EP2953874B1 EP14710493.9A EP14710493A EP2953874B1 EP 2953874 B1 EP2953874 B1 EP 2953874B1 EP 14710493 A EP14710493 A EP 14710493A EP 2953874 B1 EP2953874 B1 EP 2953874B1
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EP
European Patent Office
Prior art keywords
processing device
section
conveyor belt
paper processing
cleaning roller
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.)
Active
Application number
EP14710493.9A
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German (de)
English (en)
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EP2953874A1 (fr
Inventor
Jörg SCHEFFLER
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Individual
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Individual
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Filing date
Publication date
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Publication of EP2953874A1 publication Critical patent/EP2953874A1/fr
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Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F2/00—Transferring webs from wet ends to press sections
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H5/00—Feeding articles separated from piles; Feeding articles to machines
    • B65H5/22—Feeding articles separated from piles; Feeding articles to machines by air-blast or suction device
    • B65H5/222—Feeding articles separated from piles; Feeding articles to machines by air-blast or suction device by suction devices
    • B65H5/224—Feeding articles separated from piles; Feeding articles to machines by air-blast or suction device by suction devices by suction belts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/50—Auxiliary process performed during handling process
    • B65H2301/53—Auxiliary process performed during handling process for acting on performance of handling machine
    • B65H2301/531—Cleaning parts of handling machine
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2404/00—Parts for transporting or guiding the handled material
    • B65H2404/10—Rollers
    • B65H2404/11—Details of cross-section or profile
    • B65H2404/115—Details of cross-section or profile other
    • B65H2404/1151—Details of cross-section or profile other brush
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2404/00—Parts for transporting or guiding the handled material
    • B65H2404/20—Belts
    • B65H2404/27—Belts material used
    • B65H2404/271—Belts material used felt or wire mesh
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2404/00—Parts for transporting or guiding the handled material
    • B65H2404/20—Belts
    • B65H2404/28—Other properties of 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
    • B65H2404/00—Parts for transporting or guiding the handled material
    • B65H2404/50—Surface of the elements in contact with the forwarded or guided material
    • B65H2404/56—Flexible surface
    • B65H2404/561—Bristles, brushes
    • 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
    • B65H2406/20—Means using fluid made only for liquid medium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2406/00—Means using fluid
    • B65H2406/30—Suction means
    • B65H2406/32—Suction belts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2601/00—Problem to be solved or advantage achieved
    • B65H2601/20—Avoiding or preventing undesirable effects
    • B65H2601/26—Damages to handling machine
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2601/00—Problem to be solved or advantage achieved
    • B65H2601/50—Diminishing, minimizing or reducing
    • B65H2601/52—Diminishing, minimizing or reducing entities relating to handling machine
    • B65H2601/521—Noise

Definitions

  • the invention relates to a paper processing device according to claim 1.
  • suction belts are usually made of rubber or a similar material and have a large number of holes.
  • the transport device has at least two rollers over which this suction belt runs and below the upper section of the suction belt serving as a transport belt (i.e. below the transport section of the transport belt) there is a so-called suction box that can be subjected to negative pressure and whose top side has a large number of openings so that the negative pressure acting in the suction box sucks the transport section onto the suction box and also sucks paper that is on the surface of the transport section onto this surface.
  • the WO 2012/120606 A1 describes a suction belt in the form of a fabric with different areas.
  • Various materials are suggested for the production of this fabric, for example natural fibers, synthetic fibers or metal threads.
  • the US 6 095 218 A discloses a paper processing device according to the preamble of claim 1.
  • this metal sheet Before it is welded to form an endless belt, this metal sheet is provided with a very large number of small holes using lasers, so that this metal strip can be guided over a suction box in the conventional way.
  • the disadvantage of such a metal strip is the very high costs both in its production and in its assembly.
  • the present invention therefore sets itself the task of developing such a paper processing device in such a way that it is significantly simpler to manufacture and preferably also to assemble.
  • the conveyor belt is also made of a metal, but not of a perforated metal sheet, but of a metal mesh.
  • metal meshes are produced in large quantities and very inexpensively for a wide variety of purposes. It has been found that such a metal mesh serves the same purpose as the laser-perforated metal belt mentioned above over a wide range of mesh sizes and wire thicknesses. It has also been found that such metal meshes can be perforated by means of plasma or laser welding, and that their mechanical properties (in particular their tensile elongation) make them ideal for use as endless conveyor belts. Another advantage over the previous laser-perforated metal belts is that they are often even easier to clean. This is important for the application area described above for laser cutting devices, since laser cutting leaves burnt-off residues (ash and the like) from the paper on the conveyor belt and should be removed as continuously as possible during continuous operation.
  • metal mesh scatters the laser light rather than reflecting it, which greatly reduces the negative effects of reflections.
  • the unwanted reflections can be further reduced by sandblasting and/or nano-coating the metal mesh.
  • a vacuum generator is provided below the upper section of the conveyor belt, which has several axial fans arranged between the transport section and the return section.
  • the Figure 1 shows a schematic cross-sectional view of a device for producing laser cuts in flat paper blanks such as greeting cards or the like.
  • This device consists of four elements, namely a feed unit 40, a transport device 10, a laser 30 arranged above the transport device and a removal unit 50.
  • the transport direction of the paper is the direction T and the device can work continuously, ie the cutting contours are produced by the laser with a constant transport movement by the transport device 10.
  • the feed unit 40 can be constructed conventionally, namely consisting of a table 42 with a smooth surface and a series of transport rollers 44, which feed the paper blanks to the transport device 10 by sliding over the table.
  • the transport rollers 44 can be rotated slightly out of a 90-degree angle with respect to the transport direction T ( Figure 1a) and press the paper blanks against a stop so that a more precise positioning of the paper blanks is achieved.
  • the discharge unit 50 can also be constructed conventionally and can consist, for example, of a connecting piece 52 and a conveyor belt 54. However, it would be equally possible, for example, to provide a stacker or the like immediately after the transport device 10.
  • the essential elements of the transport device 10 are two rollers 12a, 12b, whereby at least one of the two rollers, here the rear roller 12b, is driven, the conveyor belt 25 and a plurality of axial fans 16, which are arranged below the upper section (i.e. the transport section) 25a of the conveyor belt 25.
  • This carrier 14 has a plurality of openings; the axial fans 16 are arranged at the positions of the openings, as shown in Figure 1 is only shown very schematically. In practice, the carrier 14 can also be made much thinner (this will be discussed below with reference to the Figures 4 to 9
  • the axial fans 16 are preferably located relatively close to the underside of the upper section 25a of the conveyor belt.
  • the conveyor belt 25 is made of metal fabric, i.e. usually made of a fabric consisting of warp wires 27 and weft wires 26. This is shown in the Figures 2 and 3 shown schematically.
  • the wire thickness of the interwoven wires is preferably between 0.25 and 0.4 mm and the mesh size is preferably between 0.4 and 0.6 mm.
  • the metal mesh is preferably made of stainless steel, for example V2A.
  • a so-called "normal wire mesh” is used, that is, a wire mesh in a smooth weave, a wire mesh in a linen weave or a wire mesh in a twill weave. If the metal mesh in a twill weave is used, the warp wires 27 preferably extend in the transport direction.
  • a piece of metal mesh of the appropriate length and width is cut to size and the two end edges (usually the short edges) are welded together, preferably by plasma or laser welding, so that an endless conveyor belt is created.
  • the transport device 10 can also have, for example, the following elements shown: input rollers 23, an output roller 20 and a lower cleaning brush 22 or a cleaning station. A preferred embodiment of such a cleaning station will be described later with reference to the Figures 11 and 12 explained.
  • the output roller 20 can also perform a cleaning function.
  • the provision of at least one cleaning roller or cleaning brush is preferable in the preferred use of the transport device described in the exemplary embodiment, since burnt residues must generally be removed from the transport device 10. If an output roller 20 is provided as shown at the end of the upper section 25a of the conveyor belt 25 (i.e. the transport section), this must be driven in the opposite direction to the rollers 12a, b; a cleaning brush 22 or cleaning roller acting on the lower, i.e.
  • the returning section of the conveyor belt can also be driven in the same direction as the rollers 12a, b, i.e. in the opposite direction to the returning lower section 25b, which can lead to an improvement in the cleaning effect.
  • the output roller 20 also acts on the processed paper blanks, it must be made of a relatively soft material, while the lower cleaning brush 22 can also be made of a relatively hard material.
  • the lower cleaning brush 22 could of course also act on the conveyor belt 25 in the area of one of the two rollers (but already on the lower half in each case).
  • Cleaning the lower section 25b with a "chainsaw-like" cleaning device has also proven to be very advantageous.
  • cleaning brushes rotate between two rollers in the manner of a chainsaw.
  • the cleaning brushes run in a straight line.
  • the cutting laser 30 is arranged above the transport device 10.
  • the device is operated continuously and preferably at a constant transport speed.
  • the paper blanks fed in by the feed unit 40 in a precise position are held in position by the axial fans 16, which suck air through the upper section 25a of the conveyor belt 25.
  • the air expelled by the axial fans 16 exits through the lower section 25b of the conveyor belt and thus contributes further to cleaning the returning section of the conveyor belt 25.
  • the provision of axial fans has the further major advantages of significantly reduced energy requirements and significantly reduced noise generation compared to the provision of a suction box (in conventional suction boxes, radial compressors are generally used to generate negative pressure).
  • the laser 30 cuts the paper blanks lying on the upper section of the conveyor belt, which leave the transport device 10 at the rear roller 12b and are discharged via the discharge unit 50.
  • FIGS 4 to 9 show the transport device 10 just described again in greater detail, whereby in the Figures 4 to 7 the conveyor belt 25 is not shown. All elements are in accordance with the Figure 1 with reference symbols so that repetitions are avoided as far as possible. Figures 4 and 9 very good that the horizontal Carrier 14 can be designed quite thin and that the drive motors of the axial fans 16 can be located outside the plane defined by the carrier 14. The diameters of the openings in the carrier 16 correspond essentially to the diameter of the blades of the axial fans used.
  • the carrier 14 extends between two side cheeks 18a, 18b, so that the two sections of the conveyor belt 25, the rollers 12a, 12b and the side cheeks 18a, 18b enclose an interior space in which the aforementioned carrier 14 is arranged.
  • each side cheek has a slot 19 extending in the transport direction, through which the axis of a roller, here the front roller 12a, extends, so that the distance between the two rollers 12a, 12b can be changed and thus the conveyor belt 25 can be tensioned.
  • the conveyor belt 25 can therefore also be mounted in the finished state, i.e. welded to form an endless loop, in which case it is pushed laterally onto the rollers 12a, 12b; in this case, auxiliary units such as the input rollers 23 etc. may have to be removed.
  • the Figures 11 and 12 show a preferred embodiment of a cleaning station 70, which can be arranged below the returning section 25 of the conveyor belt 25, for example at the location of the above-mentioned cleaning brush 22.
  • This cleaning station 70 has a cleaning roller 71 that can be driven about an axis 73 and a container 76 that is open at the top for receiving cleaning liquid 77 (in the simplest case, water).
  • a stripping roller 78 is also provided, which is driven in the opposite direction to the cleaning roller.
  • At least the outer jacket layer of the cleaning roller 71 is a sponge (sponge coat 74 - Figure 11 ) or in the form of a brush (brush cover 75 - Figure 12 ).
  • the cleaning roller 71 is preferably driven in the same direction of rotation as the rollers 12a, 12b.
  • the cleaning roller 71 is positioned so that it presses against the returning section 25b of the conveyor belt 25 from below and dips into the cleaning liquid 77 with a lower part. As the cleaning roller rotates, new cleaning liquid 77 is constantly taken up and conveyed to the returning section 25b of the conveyor belt.
  • the degree of moistening of the returning section can be adjusted by the stripping roller, which is arranged in the direction of rotation of the cleaning roller between the cleaning liquid and the conveyor belt.
  • the radial distance between the cleaning roller and the stripping roller 78 is preferably adjustable.
  • the conveyor belt can be thoroughly cleaned of burnt residue, ash and the like.
  • the moistening of the conveyor belt itself also has advantages: Firstly, evaporative cooling is created - additionally promoted by the arrangement of the axial fans - i.e. the conveyor belt, whose upper section 25a is exposed to laser energy, is cooled. Furthermore, the moistening can be adjusted so that a certain amount of liquid adheres to the conveyor belt even on its upper section 25a. This adhering liquid improves the adhesion of burnt residue, ash and the like so that they do not soil the back of the paper being processed.
  • the fabric structure of the metal conveyor belt strongly promotes the desired adhesion of liquid.

Claims (12)

  1. Appareil de traitement du papier avec
    un dispositif de transport (10) pour papier avec
    une bande de transport (25) perméable à l'air, constituée d'un tissu métallique et guidée sur au moins deux rouleaux (12a, 12b), dont la section supérieure forme la section de transport (25a) et dont la section inférieure forme la section de retour (25b), et
    un générateur de dépression disposé en dessous de la section de transport (25a), et
    un laser (30) disposé au-dessus de la section de transport (25a) pour couper du papier,
    caractérisé en ce que le générateur de dépression présente plusieurs ventilateurs axiaux (16) disposés entre la section de transport (25a) et la section de retour (25b).
  2. Appareil de traitement du papier selon la revendication 1, caractérisé en ce que la bande transporteuse (25) est fabriquée à partir d'une bande de tissu métallique dont les faces frontales sont soudées entre elles au plasma ou au laser.
  3. Appareil de traitement du papier selon la revendication 1 ou la revendication 2, caractérisé en ce que les ventilateurs axiaux (16) agissent directement sur la section de transport (25a) et la section de retour (25b).
  4. Appareil de traitement du papier selon l'une quelconque des revendications précédentes, caractérisé en ce que le tissu métallique de la bande de transport (25) est un tissu sergé, un tissu en amure toile ou un tissu en armure lisse.
  5. Appareil de traitement du papier selon l'une quelconque des revendications précédentes, caractérisé en ce qu'est prévu au moins un dispositif de nettoyage qui agit sur la section de retour (25b).
  6. Appareil de traitement du papier selon la revendication 5, caractérisé en ce que le dispositif de nettoyage humidifie la bande de transport (25).
  7. Appareil de traitement du papier selon la revendication 6, caractérisé en ce que le dispositif de nettoyage est réalisé en tant que poste de nettoyage (70) avec un rouleau de nettoyage (71) apte à être entraîné et avec un récipient (76) apte à être rempli avec un liquide et ouvert sur le dessus, dans lequel le rouleau de nettoyage (71) est positionné de telle sorte qu'une section supérieure de sa surface touche la section de retour (25b) de la bande de transport (25) et qu'une partie inférieure du rouleau de nettoyage se trouve à l'intérieur du récipient (76).
  8. Appareil de traitement du papier selon la revendication 7, caractérisé en ce que les axes (73) du rouleau de nettoyage (71) s'étendent parallèlement aux axes des rouleaux (12a, 12b), dans lequel le rouleau de nettoyage (71) est de préférence entraîné dans le même sens de rotation que les rouleaux (12a, 12b).
  9. Appareil de traitement du papier selon l'une quelconque des revendications 7 ou 8, caractérisé en ce que, en outre, un rouleau d'essuyage (78) s'étendant parallèlement au rouleau de nettoyage (71), de préférence apte à être entraîné dans le sens opposé au rouleau de nettoyage, est prévu, qui touche une section de la surface du rouleau de nettoyage (71).
  10. Appareil de traitement du papier selon l'une quelconque des revendications 7 à 9, caractérisé en ce qu'au moins la section d'enveloppe extérieure du rouleau de nettoyage (71) est formée par une éponge.
  11. Appareil de traitement du papier selon l'une quelconque des revendications 7 à 10, caractérisé en ce qu'au moins la section d'enveloppe extérieure du rouleau de nettoyage (71) est formée par une brosse, dont les poils s'étendent sensiblement radialement à l'axe (73) du rouleau de nettoyage (71).
  12. Appareil de traitement du papier selon l'une quelconque des revendications précédentes, caractérisé en ce que la bande de transport (25) est sablée et/ou dotée d'un nanorevêtement.
EP14710493.9A 2013-02-08 2014-02-07 Appareil de traitement de papier Active EP2953874B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102013002122.7A DE102013002122A1 (de) 2013-02-08 2013-02-08 Transportvorrichtung für Papier und Papierbearbeitungseinrichtung
PCT/EP2014/000334 WO2014121939A1 (fr) 2013-02-08 2014-02-07 Dispositif de transport pour papier et appareil de traitement de papier

Publications (2)

Publication Number Publication Date
EP2953874A1 EP2953874A1 (fr) 2015-12-16
EP2953874B1 true EP2953874B1 (fr) 2024-04-10

Family

ID=50288020

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14710493.9A Active EP2953874B1 (fr) 2013-02-08 2014-02-07 Appareil de traitement de papier

Country Status (4)

Country Link
US (1) US9725851B2 (fr)
EP (1) EP2953874B1 (fr)
DE (1) DE102013002122A1 (fr)
WO (1) WO2014121939A1 (fr)

Families Citing this family (11)

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DE102013002122A1 (de) * 2013-02-08 2014-08-14 Jörg Scheffler Transportvorrichtung für Papier und Papierbearbeitungseinrichtung
US9688474B2 (en) * 2014-01-24 2017-06-27 Lasx Industries, Inc. Metal belt for laser materials processing
DE102016103811A1 (de) 2016-03-03 2017-09-07 Jörg Scheffler Druckbogen, Verfahren zur Herstellung eines solchen Druckbogens, Einrichtung zur Durchführung dieses Verfahrens, Verfahren zur Verarbeitung eines solchen Druckbogens, Einrichtung zur Durchführung dieses Verfahrens und Verfahren zur Herstellung eines Druckereierzeugnisses
CN107351368B (zh) * 2017-09-08 2023-08-01 江苏求实塑业有限公司 一种热塑膜牵引机
CN107351356B (zh) * 2017-09-08 2023-12-19 佛山市南海广一塑薄膜有限公司 一种热塑膜牵引装置
DE102018113943A1 (de) 2018-06-12 2019-12-12 Jörg Scheffler Vorrichtung zum Auftrennen von Bögen
DE102018119971B4 (de) 2018-08-16 2022-03-24 Jörg Scheffler Vorrichtung zur Bearbeitung flächiger Elemente
ES2750073B2 (es) * 2018-09-24 2021-05-11 Asitec Ceram S L Base de soporte de bandas de transporte en maquinas de impresion digital en continuo
CN113401696B (zh) * 2021-07-15 2022-11-22 深圳市美达思科技有限公司 一种热塑性塑料薄膜生产设备
CN113955383B (zh) * 2021-09-15 2023-08-29 山东华明纺织有限公司 一种绒毛制品生产用的防飘散接料装置
CN114654781A (zh) * 2022-01-04 2022-06-24 上海永利带业股份有限公司 一种导电同步输送带及其制备方法

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EP2953874A1 (fr) 2015-12-16
DE102013002122A1 (de) 2014-08-14
WO2014121939A1 (fr) 2014-08-14
US9725851B2 (en) 2017-08-08
US20160032526A1 (en) 2016-02-04

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