EP2889245A2 - Dispositif de frein pneumatique et station d'imbrication associée, convoyeur de feuilles, et procédé de commande - Google Patents

Dispositif de frein pneumatique et station d'imbrication associée, convoyeur de feuilles, et procédé de commande Download PDF

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Publication number
EP2889245A2
EP2889245A2 EP14194449.6A EP14194449A EP2889245A2 EP 2889245 A2 EP2889245 A2 EP 2889245A2 EP 14194449 A EP14194449 A EP 14194449A EP 2889245 A2 EP2889245 A2 EP 2889245A2
Authority
EP
European Patent Office
Prior art keywords
suction
brake device
sheet
sheets
compressed air
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.)
Withdrawn
Application number
EP14194449.6A
Other languages
German (de)
English (en)
Other versions
EP2889245A3 (fr
Inventor
Stefan Braun
Helmut Heidelberg
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.)
Robert Nyblad GmbH
Original Assignee
Robert Nyblad GmbH
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 Robert Nyblad GmbH filed Critical Robert Nyblad GmbH
Publication of EP2889245A2 publication Critical patent/EP2889245A2/fr
Publication of EP2889245A3 publication Critical patent/EP2889245A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H29/00—Delivering or advancing articles from machines; Advancing articles to or into piles
    • B65H29/68—Reducing the speed of articles as they advance
    • B65H29/686—Pneumatic brakes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H29/00—Delivering or advancing articles from machines; Advancing articles to or into piles
    • B65H29/66—Advancing articles in overlapping streams
    • B65H29/6609—Advancing articles in overlapping streams forming an overlapping stream
    • B65H29/6618—Advancing articles in overlapping streams forming an overlapping stream upon transfer from a first conveyor to a second conveyor advancing at slower speed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2406/00—Means using fluid
    • B65H2406/10—Means using fluid made only for exhausting gaseous medium
    • B65H2406/14—Means using fluid made only for exhausting gaseous medium with selectively operated air supply openings
    • 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
    • B65H2406/00—Means using fluid
    • B65H2406/30—Suction means
    • B65H2406/36—Means for producing, distributing or controlling suction
    • B65H2406/363—Means for producing, distributing or controlling suction adjusting or controlling distribution of vacuum for a plurality of suction means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • 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
    • B65H2511/00—Dimensions; Position; Numbers; Identification; Occurrences
    • B65H2511/10—Size; Dimensions
    • B65H2511/11—Length
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2511/00—Dimensions; Position; Numbers; Identification; Occurrences
    • B65H2511/10—Size; Dimensions
    • B65H2511/12—Width
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2511/00—Dimensions; Position; Numbers; Identification; Occurrences
    • B65H2511/10—Size; Dimensions
    • B65H2511/13—Thickness
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/10—Handled articles or webs
    • B65H2701/17—Nature of material
    • B65H2701/176—Cardboard

Definitions

  • the present invention relates to a suction brake device for braking bows, an overlapping station for overlapping sheets, a conveyor line of sheets with a suction brake device and a corresponding control method of a suction brake device.
  • Bogenabbremsvorraumen be used to decelerate sheets, such as sheets of paper, before depositing on a stack.
  • deceleration devices behind cross cutters can be used to achieve braking and overlapping of the sheets leaving the cross cutter. This is the case in particular in paper and cardboard processing. For example, bows are cut using simplex or duplex cross cutters.
  • the sheets are transported over a short distance at a speed V 2 which is increased in relation to a speed V 1 in the cross cutter. From this increased speed V 2 , which may be for example 400 m / min, the sheets are braked in a braking device to a lower speed V 3 , for example 80 m / min and fanned out.
  • the Deceleration usually occurs by means of a suction chamber which sucks in a region of the sheet.
  • a blanket of the suction chamber is therefore usually provided with a plurality of openings.
  • the sheets are fed to a stacker.
  • the sheets leaving a duplex cross cutter may have different formats.
  • FIGS DE 28 33 570 B1 proposed a Saugbremsvortechnisch for a duplex cross cutter.
  • the Saugbremsvor Vietnamese has a suction chamber with two groups of openings, each congruent perforated cover plates, a respective punched control band and a cover slide.
  • the two cover slide cover each one of the two sides extending in the conveying direction sides of the suction chamber in each case a group of openings to a running in the conveying direction common parting line. A release of the openings for a clocked operation via respective tax bands.
  • the first group of openings opens in a suction chamber, which extends transversely to the conveying direction.
  • the second group of openings opens into blind holes, which run parallel to the conveying direction and open into the suction chamber.
  • a sealing slide is arranged, so that the suction chamber is divided into two chambers which are sealed against each other.
  • Saugbremsvorraumen A disadvantage of the Saugbremsvorraumen shown above is that the cover slide are highly susceptible to wear. They have to be guided in guides and they have to also associated Verstellmassen be moved to achieve a variation of the intake width. A quick change from one format width to another format width of the sheets is therefore not possible.
  • Another disadvantage of these known Saugbremsvortechniken is that due to the negative pressure possibly present cutting dust of the sheets is sucked. This can lead to binding or blocking of the movable controls. In addition, the cutting dust has a detrimental effect on the life of the vacuum valve. Likewise, the generation of negative pressure and the provision of a correspondingly sealed piping system are cost-intensive.
  • the technical object of the present invention is therefore the optimization of known Saugbremsvoriquesen with a view to braking different sheet sizes while increasing the maintenance interval.
  • the suction brake device for braking bows has at least one continuous intake region which is subdivided into a plurality of subregions, each subregion being connectable to a compressed air source via a respective valve, a vacuum-generating device being arranged behind the valve in the flow direction of the compressed air, so that by means of the compressed air, a negative pressure in each section is individually adjustable via a valve control.
  • the suction brake device is used in a conveyor line of sheets. This is, for example, a conveyor or processing line in the paper processing industry.
  • the suction brake device is preferably arranged in the conveying direction of the sheets behind a duplex cross cutter.
  • the suction brake device is arranged in an overlapping station.
  • the suction brake device according to the invention can also be arranged for braking off sheets to be deposited on stacks adjacent to a stacking device, behind a simplex cross cutter or another cutting or depositing device.
  • the sheets leaving the cross cutter are fed to the suction brake device at a first speed, for example 400 m / min.
  • a first speed for example 400 m / min.
  • a lower speed for example 80 m / min.
  • a rear portion of the sheet must be sucked through the Saugbremsvoroplasty, otherwise it comes to a compression of the bow.
  • first properties of the arc are detected which are fed to the suction brake device.
  • the detection of the properties may include the format of the sheet with length and width, the thickness, the material used, etc.
  • a corresponding valve is activated, so that compressed air is supplied to the vacuum generating device.
  • the vacuum generating device is, for example, a Venturi nozzle.
  • the targeted supply of the exemplary Venturi nozzle with compressed air, the negative pressure in sub-areas of the intake is individually adjustable.
  • a plurality of valves, in particular quick-acting valves are assigned to a vacuum-generating device in the respective subarea, so that a volumetric flow of the compressed air can be selectively adjusted as a function of the detected sheet properties.
  • a respective number of the subregions used preferably depends on the supplied sheet format and the required suction force.
  • the sub-areas in which the negative pressure for sucking the sheet is generated it is the sub-areas that can suck the bow effectively.
  • Vacuum-generating devices in parts lying outside the sheet width are preferably not supplied with compressed air.
  • the suction brake device can be used if simultaneously sheets of two different formats are fed in parallel.
  • the suction region then divides, for example, into a first section for the first arches and a second section for the second arches.
  • Each section then comprises a plurality of subareas. Due to the individually supplied with compressed air vacuum generating device in the respective sub-area an effective braking of the sheets is also possible here. Since a vacuum can be generated individually in the subregions, a different timing of the subregions is possible. For example, the sections belonging to the first section may be operated in a different clocking than the sections belonging to the second section.
  • each portion is connected to a common manifold and the common manifold is connectable to the compressed air source.
  • an overpressure is permanently provided in the manifold by the compressed air source.
  • the manifold is located adjacent or near the intake area.
  • the source of compressed air may be remote from the suction brake device.
  • the supply path between the negative pressure generating device in the respective partial area and the valve is thus short. In this way, the overpressure can also be used more efficiently, which in turn has a favorable effect on the operating costs.
  • each subregion has an associated suction opening.
  • each suction port is associated with a vacuum generating device.
  • each individual suction opening can be controlled individually by means of at least one valve.
  • the subregions used to aspirate the different sheet sizes can thus be set more accurately.
  • the suction openings are arranged in a line with a uniform, predetermined distance from each other.
  • the continuous intake region is at least partially covered by a perforated metal cover.
  • a perforated metal cover In conjunction with the respective one suction opening per partial area, this ensures that a sheet to be sucked is not sucked in at certain points from the suction opening.
  • the perforated sheet cover By means of the perforated sheet cover, the sheet is sucked over an enlarged area, whereby any damage to the sheet can be avoided.
  • the suction region comprises a flat iron.
  • the flat iron has holes acting as the suction openings.
  • Each of these suction openings can be arranged in a depression formed in the flat iron.
  • a spout may be provided, which opens into an exhaust air manifold. If there are a plurality of suction openings, in particular all nozzles open in a common exhaust air collecting line.
  • the venturi nozzle is disposed in the nozzle so as to be located adjacent to the suction port. An opening of the Venturi nozzle points away from the suction opening, and is in particular opposite to the suction opening aligned.
  • the suction brake device comprises the exhaust manifold, wherein the exhaust manifold at least partially comprises a sound-absorbing material.
  • the compressed air flows through the exemplary Venturi nozzle into the nozzle and then into the exhaust manifold.
  • a negative pressure forms at the suction opening.
  • a diameter of the suction opening and a diameter of the opening of the exemplary Venturi nozzle must be matched to one another.
  • the length of the spout affects the height of the maximum negative pressure that can be generated. In this way, the sheet is sucked in above the suction opening and the cutting dust is sucked into the exhaust air collecting line.
  • the exhaust air collecting line is preferably connectable to a vacuum system for discharging cutting dust.
  • the present invention also includes an overlapping station for overlapping sheets having a suction brake device according to the invention.
  • the present invention comprises a conveyor line of sheets comprising a suction brake device according to the invention.
  • the suction brake device can be used at various points in the paper and board processing. In addition to these areas, bows made of other materials are also produced.
  • the advantages resulting from the use of the suction brake device according to the invention reference is made to the above.
  • the present invention comprises a control method of a suction brake device according to the invention.
  • the method comprises the following steps: detecting sheet properties and activating at least one valve that has been selected based on the detected sheet properties, so that a negative pressure can be generated at least in a subarea effective for sucking the sheet.
  • the vacuum-generating devices are supplied with overpressure, which are arranged in the sub-areas that can suck the sheet effectively.
  • the recorded sheet properties can be: the format of the sheet with length and width, the thickness, the material used, etc.
  • the functionality of the suction brake device has already been explained above. Vacuum-generating devices in lying outside a sheet width portions of a respective suctioned sheet are thus not supplied with compressed air.
  • a plurality of valves are selected based on the detected sheet characteristics, and in driving, the selected valves are selected to supply pressurized air only to suction-generating devices required for suction.
  • This procedure is particularly useful for many small sections.
  • the intake area has 20 sections.
  • An exemplary arc completely covers ten portions of the intake area. At least one adjacent subarea is only partially covered and the other subareas are not. Effective for sucking the bow are thus ten sections.
  • the thickness and the material of the bow as well as the available Absorbing force less than the effective ten subregions may be required. For example, only every second portion may be required to aspirate the sheet.
  • the suction brake device according to the invention is used in the processing of sheets, especially in the paper processing industry.
  • the suction braking device is used in an overlapping station for overlapping and braking of sheets, which is arranged in the conveying direction of the sheets behind a duplex cross cutter.
  • FIGS. 1 to 4 show an embodiment of an overlapping station 1 with inventive suction brake device.
  • the sheets are removed from the duplex cross cutter and fed by means of a sheet feed belt 10 and a plurality of upper belts 20 of the overlapping station 1.
  • the sheet feeding belt 10 has a first speed of about 400 m / min.
  • the plurality of upper belts 20 has the same speed as the sheet feeding belt 10.
  • the sheet feed belt 10 Adjacent to the suction brake device, the sheet feed belt 10 is deflected by means of a roller 12.
  • the upper bands 20 do not change their direction at this point.
  • a roller 32 for a sheet overlap tape 30 is arranged between the suction brake device and the roller 12.
  • the roller 32 is arranged with respect to the roller 12 so as to have a step as in FIG Fig. 3 seen. Due to this gradation, the sheets fed with the sheet feeding belt 10 fall on the sheet overlapping tape 30, which enables shingling of the sheets.
  • the suction brake device In the conveying direction of the sheets behind the roller 32 of the sheet overlap tape 30, the suction brake device according to the invention is arranged.
  • the suction brake device is held in position by means of a holding device 3.
  • the suction brake device In the suction region, which substantially corresponds to the width of the sheet overlapping tape 30, the suction brake device comprises a flat iron 40.
  • Suction openings 42 are provided in the flat iron.
  • the suction openings 42 are formed uniformly spaced in a line in the flat iron 40. The detailed configuration of the suction openings 42 will be described later with reference to FIG FIG. 4 received.
  • each suction opening 42 is associated with a Venturi nozzle 51 as a vacuum generating device which projects into a spout of the suction opening 42.
  • the venturi 51 is at least one valve 50, in particular a quick-acting valve assigned.
  • the valve 51 is in turn connected to a control electronics 52 for valve actuation.
  • a cable tray 66 cables for the control electronics 52 are guided in the Saugbremsvoriques, as in Fig. 3 and 4 shown.
  • each suction opening 42 thus represents a partial area of the suction area.
  • the valves 50 are connected via holes in the flat iron 40 to the manifold 60.
  • the manifold 60 is connected via the terminals 62 to a compressed air source.
  • an overpressure is applied uniformly to each valve 50, so that in later operation only short opening times for the valve 50 are required to provide by means of the venturi 51 a corresponding negative pressure in the sub-areas for sucking a sheet.
  • the valves 50 have switching times of approximately 1 ms.
  • the Venturi nozzle 51 in addition to the sheet above the suction opening 42, also cutting dust and other particles located in the air or at the edge of the suction opening 42 are sucked in.
  • the cutting dust and other impurities reach so in the exhaust air manifold 67. From there they can be sucked, for example, with a vacuum generating system.
  • a noise reduction during operation of the device can be achieved in that the exhaust air manifold 67 at least partially has a sound-absorbing material or is lined with it, such as a nub foam.
  • a suction opening 42 and a section of an associated perforated metal cover 70 is shown in detail.
  • the suction opening 42 is surrounded by an annular chamfered area 46.
  • the suction opening 42 is thus configured funnel-shaped.
  • the suction opening 42 is provided in a rectangular recess 48 with rounded corners in the flat iron 40.
  • a perforated metal cover 70 is wholly or partially provided.
  • the perforated metal cover 70 has a plurality of openings 72. These also have annular, beveled areas.
  • the perforated metal cover has bores 74 in order to fasten the perforated metal cover to the flat iron 40.
  • the perforated metal cover 70 is arranged over a larger area of the flat iron 40, then four holes 74 for fastening the perforated metal cover 70 to the flat iron 40 need not be provided for each suction opening 42. In this case, fixing in uniform, predetermined intervals, as in FIG. 5 shown.
  • step A a property of the arc is detected. This can be done by sensors or the required information is transmitted from a corresponding control unit from the conveyor line. In addition to the width of the sheet, in particular the length, the thickness and the material of the sheet are relevant information.
  • one or more subregions are determined that can effectively decelerate the arc.
  • the device has 30 sections.
  • the supplied bow covers ten sections completely and one part.
  • the remaining sections are covered by a parallel second arc.
  • the corresponding ten subregions are determined as effective subregions for the first arc.
  • a sheet end behind the conveying direction of the sheet is then sucked in and decelerated (step B).
  • the sheet is removed by means of the sheet overlap tape 30.
  • the method is repeated accordingly.
  • this procedure corresponds to the operation of the suction brake device according to the invention, when it is arranged in the conveying direction of the sheets behind a simplex cross cutter.
  • the procedure is analogous for the parallel second arc.
  • the width of the bow is such that it covers, for example, 19 sections and a partial.
  • 19 sections can suck the second sheet effectively. Therefore, at most these 19 sections are used for sucking the sheet.
  • a rear end of the bow is sucked again. However, this can happen at a different time than the suction of the first sheet.
  • due to the individual with compressed air supplied vacuum generating device in each subarea a different timing of the subregions is realized.
  • first and second arcs move in response to the previous first and second arcs in the overlap station 1, respectively. This results in a shingling of the arches.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Delivering By Means Of Belts And Rollers (AREA)
EP14194449.6A 2013-12-06 2014-11-24 Dispositif de frein pneumatique et station d'imbrication associée, convoyeur de feuilles, et procédé de commande Withdrawn EP2889245A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102013020456.9A DE102013020456A1 (de) 2013-12-06 2013-12-06 Saugbremsvorrichtung sowie dazugehöriges Steuerverfahren

Publications (2)

Publication Number Publication Date
EP2889245A2 true EP2889245A2 (fr) 2015-07-01
EP2889245A3 EP2889245A3 (fr) 2016-07-06

Family

ID=52020954

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14194449.6A Withdrawn EP2889245A3 (fr) 2013-12-06 2014-11-24 Dispositif de frein pneumatique et station d'imbrication associée, convoyeur de feuilles, et procédé de commande

Country Status (2)

Country Link
EP (1) EP2889245A3 (fr)
DE (1) DE102013020456A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105881892B (zh) * 2016-05-26 2018-09-25 安徽贵达汽车部件有限公司 一种自动上料的刹车片压片设备

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1812084A1 (de) 1968-12-02 1970-06-11 Jagenberg Werke Ag Verfahren und Vorrichtung zum Foerdern und Ablegen von aus Querschneidern od.dgl. ausgestossenen Bogen
DE2833570B1 (de) 1978-07-31 1979-12-06 Jagenberg Werke Ag Saugbremsvorrichtung

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2453753C3 (de) * 1974-11-13 1982-05-27 M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach Bogenbremse
DE102010049161A1 (de) * 2010-10-22 2012-04-26 Bielomatik Leuze Gmbh + Co. Kg Vorrichtung zum Abbremsen von Bögen
DE102011115297A1 (de) * 2011-09-29 2013-04-04 Robert Nyblad Gmbh Saugbremsvorrichtung sowie dazugehöriges Steuerverfahren

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1812084A1 (de) 1968-12-02 1970-06-11 Jagenberg Werke Ag Verfahren und Vorrichtung zum Foerdern und Ablegen von aus Querschneidern od.dgl. ausgestossenen Bogen
DE2833570B1 (de) 1978-07-31 1979-12-06 Jagenberg Werke Ag Saugbremsvorrichtung
DE2903771A1 (de) 1978-07-31 1980-08-07 Jagenberg Werke Ag Saugbremsvorrichtung

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Publication number Publication date
DE102013020456A1 (de) 2015-06-11
EP2889245A3 (fr) 2016-07-06

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