• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    Support base (1) for conveyor belts in continuous digital printing machines made of glass, comprising a set of holes, and which is arranged on a drawer (2) in which a vacuum is created that causes suction through of the holes arranged in the base (1), and on which a perforated band (4) is moved, which transports parts (5) through a printing machine (3). (Machine-translation by Google Translate, not legally binding)
    公开号:ES2750073A1
    申请号:ES201830919
    申请日:2018-09-24
    公开日:2020-03-24
    发明作者:Ferrando Juan José Barreda
    申请人:Asitec Ceramic SL；
    IPC主号:
    专利说明:

    [0001]
    [0002] SUPPORT BASE FOR CONVEYOR BELTS IN CONTINUOUS DIGITAL PRINTING MACHINES
    [0003]
    [0004] The present invention belongs to the field of digital printing technique, and particularly to the transportation system of the pieces to be printed.
    [0005]
    [0006] State of the art
    [0007]
    [0008] Industrial printing is a process that involves various methods, being the printing systems very varied.
    [0009]
    [0010] Among these systems are some such as flexography, offset printing, or gravure, all of them different systems, but in which the image is transferred from a plate or roller to the part to be printed. In these systems the part to be printed (paper, cardboard, plastic, etc.) is transported and guided between a series of rollers.
    [0011]
    [0012] In addition to the aforementioned systems, digital printing has been developed in recent years, allowing this type of printing greater flexibility since a printing plate is not needed and can be adapted to different sizes, and is profitable for shorter runs. Among the digital printing methods are, among others, inkjet printing and laser printing. When continuous digital printing is performed, the part to be printed is moved through a conveyor by the printing machine, where the print heads that print the image on the part are located. To ensure that the image is perfectly printed on the part, it is necessary to hold the part to the surface on which it moves to avoid unwanted movements that change its position before or during printing.
    [0013]
    [0014] For this reason, in this type of machines that use this printing technique, the pieces are transported by means of vacuum conveyor belts, which consist of a perforated band that is connected to a low pressure (vacuum) area through holes in the bed of the band, so that said vacuum generates a suction that "sticks" the part transported to the transport band, thus being able to carry out the printing operation so that the element on which it is to be printed does not move and achieve thus the quality required in the printed image.
    [0015] In the described vacuum conveyors, the perforated strip is arranged on a drawer with two side walls and a perforated upper base, said base being of a metallic material, so that a depression (vacuum) is created inside the drawer, and Suction is produced through both the holes in the perforated support base and the holes in the perforated band, holding the part on the band and preventing the part from moving with respect to said band.
    [0016] A problem that appears in this type of conveyor is that a high friction occurs between the metal base and the perforated band, causing great wear on both the perforated band and the metal base, which entails high maintenance, since periodically Both the metal base and the perforated band have to be replaced, and therefore productivity is lost since time and labor have to be spent replacing it.
    [0017]
    [0018] To solve this problem, the present invention provides a solution for vacuum belt conveyors for the transport of parts (paper, cardboard, plastic, etc.) in continuous digital printing machines, which solves the problems mentioned above.
    [0019]
    [0020] Explanation of the invention
    [0021]
    [0022] The present invention provides a substantial improvement in the conveyors of digital printing machines, in which the part to be printed is transported on a band that comprises a set of regularly or irregularly arranged holes and is driven by rollers, and are fastened thereto. by means of a vacuum system.
    [0023]
    [0024] Usually, on conveyors of digital printing machines, the perforated belt is arranged on a drawer with two side walls and a perforated upper base, so that a vacuum is created inside the drawer, and a suction is produced through both the holes of the perforated support base and the holes of the perforated band, holding the piece on the band and avoiding the displacement of the piece with respect to said band.
    [0025]
    [0026] The present invention provides a support base for perforated transport belts, on which they slide, said base being constituted by at least one glass plate.
    [0027] The fact that the support base of the perforated band is glass, makes the friction that occurs between said base and the perforated band is much less than the friction that occurs when the support base is metal. This causes both the support base and the perforated band to have much less wear, which significantly reduces the maintenance required, and also reduces to some extent the energy consumption that dissipates such friction. In this way, the number of production stops to change the band and / or support base is reduced, which, in addition to being costly work, significantly reduces productivity.
    [0028]
    [0029] According to an embodiment of the present invention, the support base is made up of a set of plates that are arranged juxtaposed on the vacuum drawer longitudinally in the direction of movement of the pieces. The fact that the support base is made up of different plates facilitates the transport and assembly operations of the support base, and in case of breakage of one of the plates, only the damaged plate would have to be replaced, and not the entire base of support, especially if it has a significant length.
    [0030]
    [0031] According to an embodiment of the present invention, the glass is a laminated glass. The advantage that the glass is laminated is that, in case of fracture, glass fragments are prevented from falling off, considerably improving its mechanical behavior in the event of impact and avoiding the danger that the projection of the glass chips entails for both operators. as for the printing machine.
    [0032]
    [0033] To ensure that suction always occurs on the part being transported for printing, the holes in the support base are of a different size than the holes in the perforated transport belt, ensuring that at least at all times a portion of a set of holes in the base coincides with at least a portion of a set of holes in the transport belt.
    [0034]
    [0035] According to an embodiment option, the holes of the conveyor belt are of a larger size than the holes of the support base, and are arranged in such a way that at least a portion of each hole in the base coincides with at least a portion a hole in the tape during operation.
    [0036] According to another embodiment, the holes in the support base are larger than the holes in the conveyor belt, and are arranged in such a way that at least a portion of each hole in the base coincides with at least a portion. a hole in the tape during operation.
    [0037]
    [0038] Brief description of the drawings
    [0039]
    [0040] In order to illustrate the explanation that will follow, we enclose with the present specification a sheet of drawings in which in two figures the essence of the present invention according to a particular embodiment is represented by way of example and without limitation, and in which:
    [0041]
    [0042] Figure 1 shows the perforated glass base arranged on the transport element of a continuous digital printing machine, according to an embodiment of the present invention.
    [0043]
    [0044] Figure 2 shows the perforated web arranged on the perforated glass base in a continuous digital printing machine, according to an embodiment of the present invention.
    [0045]
    [0046] In these figures we can see the following reference signs:
    [0047]
    [0048] 1 Perforated glass base
    [0049]
    [0050] 2 Support drawer
    [0051]
    [0052] 3 Printer
    [0053]
    [0054] 4 Perforated band
    [0055]
    [0056] 5 Piece to print
    [0057] Description of the preferred embodiments of the invention
    [0058]
    [0059] In view of the aforementioned figures, and according to the numbering adopted, a preferred embodiment of the invention can be seen in them, which comprises the parts and elements indicated and described in detail below.
    [0060]
    [0061] Thus, as seen in Figures 1 and 2, the present invention provides a perforated glass base (1) for a vacuum belt conveyor, in which the glass base (1) is arranged on at least two side plates that make up a drawer (2) inside which a vacuum is created that causes suction through the trades practiced in said base (1). On the glass base (1) runs a perforated band (4) driven by a set of rollers, said perforated band (4) going through the printing machine (5).
    [0062]
    [0063] The vacuum created inside the drawer (2) causes suction through the holes in the base (1) and the perforated band (4), which causes the transported part (5) to remain fixed on the band perforated (4) (band that slides along with the piece along the printing machine), thus allowing the printing operation to be carried out correctly.
    [0064]
    [0065] To ensure that suction always occurs on the transported part (5), the holes in the perforated band (4) are larger than the holes in the glass base (1), and are arranged in such a way that at least a portion of each hole in the glass base (1) coincides with at least a portion of some hole in the perforated band (4) during the operation, or vice versa.
    权利要求:
    Claims (4)
    [1]
    1. - Support base (1) of transport belts in continuous digital printing machines, which includes a set of holes, which is arranged on a drawer (2) in which a vacuum is created that causes suction through the holes arranged in the base (1), and on which a perforated band (4) that transports parts (5) is moved through a printing machine (3), characterized in that the support base (1) is of glass.
    [2]
    2. - Support base (1) of conveyor belts in continuous digital printing machines, according to claim 1, characterized in that the glass that makes up the support base (1) is laminated glass.
    [3]
    3. - Support base (1) of conveyor belts in continuous digital printing machines, according to any of the preceding claims, characterized in that the holes in the glass base (1) are smaller in size than the holes in the perforated band (4), and are arranged in such a way that at least a portion of each hole in the glass base (1) coincides with at least a portion of some hole in the perforated band (4) during operation.
    4. - Support base (1) of conveyor belts in continuous digital printing machines, according to any of claims 1 or 2, characterized in that the holes in the glass base (1) are larger than those holes of the perforated band (4), and are arranged in such a way that at least a portion of each hole of the glass base (1) coincides with at least a portion of some hole of the perforated band (4) during the operation .
    [4]
    4.- Support base (1) for transport belts in continuous digital printing machines, according to any of the preceding claims, characterized in that the base is made up of different juxtaposed plates.
    类似技术:
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    同族专利:
    公开号 | 公开日
    US20200094586A1|2020-03-26|
    EP3626466A1|2020-03-25|
    ES2750073B2|2021-05-11|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    EP0130751A2|1983-06-24|1985-01-09|Toshin Kogyo Co. Ltd.|Continuous multicolor printing method and apparatus|
    US6336722B1|1999-10-05|2002-01-08|Hewlett-Packard Company|Conductive heating of print media|
    DE102013002122A1|2013-02-08|2014-08-14|Jörg Scheffler|Transport device for paper and paper processing device|
    EP3156245A2|2015-09-28|2017-04-19|Halm Industries Co., Inc.|Vacuum transfer device for envelope printer|
    US7354147B2|2003-11-04|2008-04-08|Hewlett-Packard Development Company, L.P.|Platen having channels and method for the same|
    EP2868479A1|2013-10-24|2015-05-06|OCE-Technologies B.V.|Apparatus for treating media sheets|
    DE102014224972A1|2014-12-05|2016-06-09|Heidelberger Druckmaschinen Ag|Device for transporting bows|
    US10377152B1|2018-02-15|2019-08-13|Xerox Corporation|Media transports|
    法律状态:
    2020-03-24| BA2A| Patent application published|Ref document number: 2750073 Country of ref document: ES Kind code of ref document: A1 Effective date: 20200324 |
    2020-09-25| FA2A| Application withdrawn|Effective date: 20200921 |
    2021-04-21| NE2A| Request for restoration|Effective date: 20210415 |
    2021-05-11| FG2A| Definitive protection|Ref document number: 2750073 Country of ref document: ES Kind code of ref document: B2 Effective date: 20210511 |
    优先权:
    申请号 | 申请日 | 专利标题
    ES201830919A|ES2750073B2|2018-09-24|2018-09-24|SUPPORT BASE FOR CONVEYOR BELTS IN CONTINUOUS DIGITAL PRINTING MACHINES|ES201830919A| ES2750073B2|2018-09-24|2018-09-24|SUPPORT BASE FOR CONVEYOR BELTS IN CONTINUOUS DIGITAL PRINTING MACHINES|
    US16/576,960| US20200094586A1|2018-09-24|2019-09-20|Support Base for Conveyor Belts in Continuous Digital Printing Machines|
    EP19198831.0A| EP3626466A1|2018-09-24|2019-09-23|Support base for conveyor belts in continuous digital printing machines|
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