EP2835259B1 - Cylindre de guidage de feuilles équipé d'un dispositif de retenue de feuilles pneumatique - Google Patents

Cylindre de guidage de feuilles équipé d'un dispositif de retenue de feuilles pneumatique Download PDF

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Publication number
EP2835259B1
EP2835259B1 EP14174902.8A EP14174902A EP2835259B1 EP 2835259 B1 EP2835259 B1 EP 2835259B1 EP 14174902 A EP14174902 A EP 14174902A EP 2835259 B1 EP2835259 B1 EP 2835259B1
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EP
European Patent Office
Prior art keywords
suction
sheet
guiding cylinder
cup strip
suction cup
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.)
Not-in-force
Application number
EP14174902.8A
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German (de)
English (en)
Other versions
EP2835259A3 (fr
EP2835259A2 (fr
Inventor
Harald Bayer
Hans-Georg Eitel
Frank Hildebrandt
Hubert Hofmann
Stefan Klein
Lothar KÜHLMEYER
Stefan Schwarz
Edgar Werber
Holger Wiese
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.)
Manroland Sheetfed GmbH
Original Assignee
Manroland Sheetfed 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 Manroland Sheetfed GmbH filed Critical Manroland Sheetfed GmbH
Publication of EP2835259A2 publication Critical patent/EP2835259A2/fr
Publication of EP2835259A3 publication Critical patent/EP2835259A3/fr
Application granted granted Critical
Publication of EP2835259B1 publication Critical patent/EP2835259B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F21/00—Devices for conveying sheets through printing apparatus or machines
    • B41F21/10—Combinations of transfer drums and grippers
    • B41F21/106—Combinations of transfer drums and grippers for reversing sheets, e.g. for perfecting machine
    • B41F21/108—Combinations of transfer drums and grippers for reversing sheets, e.g. for perfecting machine with pneumatic means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F21/00—Devices for conveying sheets through printing apparatus or machines
    • B41F21/04—Grippers
    • B41F21/06—Suction-operated grippers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F21/00—Devices for conveying sheets through printing apparatus or machines
    • B41F21/10—Combinations of transfer drums and grippers
    • B41F21/102—Combinations of transfer drums and grippers with pneumatic means

Definitions

  • the invention relates to a sheet guiding cylinder with at least one pneumatically controllable sheet holding device for a processing machine according to the preamble of independent claim 1.
  • a sheet guiding cylinder of this kind is made DE 43 35 185 A1 known, which is designed as a turning drum and having pneumatically controllable suction sheet holder means.
  • the turning drum is known to be used for the application of sheets, in particular according to the principle of trailing edge.
  • the suckers are in functional connection with a suction air line which leads via a control valve and the hollow axis of the turning drum to a vacuum generator arranged outside the hollow axle.
  • the control valve can be mounted to oscillate in the body of the turning drum in a pivot point.
  • control valve engages a pneumatically actuated, arranged on the side window of the sheet guiding cylinder working cylinder by means of a piston rod, which brings the control valve in the operating mode perfecting over a valve tappet with a roller with a control cam in engagement.
  • the control cam is arranged on a control shaft and serves for suction air control in defined rotation angle ranges.
  • DE 43 15 548 A1 discloses a sheet guiding cylinder with a pneumatically controllable sheet holding means.
  • a rotary valve is used from the outside, the suction air to a Mehrwegeabsperrschieber.
  • the sheet guiding cylinder has in an embodiment two circumferentially arranged Sauggreifer myselfn as sheet holding means, each Sauggreifer #2 having a separate rotary valve connection to the rotary valve. Lines from the rotary valve ports lead to the reusable gate valve and lines from the squeegee rows lead to the reusable gate valve.
  • DE 201 02 400 U1 and DE 103 50 726 A1 are further pneumatically controllable sheet holding devices for sheet guiding cylinder known. Also disclosed DE 40 12 498 C1 a drivable suction strip, which is coupled to a rocker shaft and can be driven by means of a cam gear.
  • a sheet guiding cylinder with at least one pneumatically controllable sheet holding device is known.
  • the sheet guiding cylinder has a suction strip with suction nozzles arranged at intervals and a compressed air source connected on the line side.
  • Each suction nozzle is associated with an inlet opening adjacent, which is coupled to a flow channel with end arranged discharge opening.
  • Each suction nozzle is coupled to an intake passage and the intake passage is merging into an opening in the flow passage. For rapid replacement of a sucked sheet of the suction nozzles is provided at sheet transfer, blow over a separate compressed air connection to the intake port or all the suction nozzles.
  • a pre-gripper of a processing machine for sheet material A pre-gripper with pneumatically controllable sheet holding device should be energy-efficient and operated with noticeably shortened control times.
  • the pre-gripper is provided with a suction pad device with suction nozzles, inflow openings, flow channels and outflow openings.
  • the inflow openings are coupled by means of connecting lines with an upstream manifold and a valve assembly upstream of the manifold.
  • the valve assembly is coupled by means of a connecting line with a pneumatic source.
  • Suction nozzles of this type are prone to soiling like any other suction nozzle, which is due to the paper dust accumulating in the paper processing. If dirt enters the suction nozzles, it also reaches the area an ejector system and so can affect its function. However, in order to ensure an always sufficient and as even as possible holding force of all suction nozzles of a sheet-holding system and in particular to achieve an exact sheet transfer in the complex turning process, at least a perfect function of the suction nozzles must be ensured.
  • a device for supplying a vacuum consumer with negative pressure for the removal of dirt has become known.
  • the device is provided in a sheet-processing machine, wherein from a vacuum generator, a suction line leads to the vacuum consumer, which is acted upon by negative pressure.
  • a suction air flow leading from the vacuum consumer to the vacuum generator is generated.
  • a filter is arranged between vacuum generator and vacuum consumers.
  • a filter insert is provided in a suction nozzle, which prevents the entry of dirt, but even enforce relatively quickly and make the suction nozzle so unusable.
  • the filter should be acted upon with blown air, transversely or oppositely to the flow direction of the suction air flow, to blow the filter free.
  • the device obstructs the suction power of the suction nozzle, pollutes much faster than the suction nozzle itself and experience has shown that it is very expensive to clean with blown air, so that time-consuming cleaning cycles have to be activated. If the cleaning cycles are integrated into the working cycle of a high-cycle frequency, effective cleaning of the filter is almost impossible. Cleaning the vacuum generator is not intended.
  • the invention is therefore based on the object to provide a sheet guiding cylinder of the type mentioned, the pneumatically controllable sheet holding device is safe to operate, the function of sufficient suction must always be ensured.
  • the pneumatically controllable sheet holding device has one or more suction bars with a plurality of suction nozzles arranged above the maximum format width of the sheet material.
  • the suction nozzles are individually or in groups pneumatically controllable with respect to the air supply.
  • the suction nozzles are arranged adjacent to the maximum format width of the sheet material at intervals adjacent and activated or deactivated individually or in groups. Taking into account the respective format width of the sheet material to be processed, optionally only the suction nozzles necessary for detecting an edge of the sheet material can be activated.
  • the suction strip has suction nozzles which are each formed in an ejector shape in the manner of a jet pump.
  • means are provided to blow the suction nozzles and preferably the Ejektorsysteme of contamination.
  • An arrangement of a closure element for covering the outflow opening of the ejector system in a rest position of the suction bar between two working cycles is advantageous.
  • a further advantage is the connection of a controllable blowing device to the intake passage.
  • a further advantage is the assignment of a controllable closure at the outflow opening of the ejector system.
  • Fig. 1 shows as a processing machine a sheet-fed rotary printing press, with at least one printing unit I and at least one downstream in the conveying direction 5 of the sheet material 28 further printing unit II, each as an offset printing units with plate cylinder 1 (plate cylinder), blanket cylinder. 2 (Transfer cylinder), inking unit 3 and dampening unit 4 are provided.
  • the blanket cylinder 2 is in operative connection with a sheet guiding cylinder 7, which is designed here as a counter-pressure cylinder.
  • the sheet material 28 is supplied to the sheet guiding cylinder 7 of the printing unit I in the conveying direction 5, for example, by means of a sheet guiding cylinder 6.
  • a turning device III is arranged, which is intended for the fair and for perfecting and the sheet material 28 can evert under the principle of trailing edge application in the printing operation.
  • a turning device III can be used as Eintrommelclient or as in Fig. 1 be designed as a three-drum turn.
  • the turning device III after Fig. 1 In the conveying direction 5, the sheet guiding cylinder 8, a sheet guiding cylinder 9, here formed as a storage drum, downstream, has a bowing cylinder 7 of the printing unit I downstream in the conveying direction 5.
  • This sheet guiding cylinder 9 is downstream of a turning drum 10 in the conveying direction 5.
  • the turning drum 10 follows the printing unit 11 and this printing unit II can be arranged downstream of the sheet transport in the direction of a sheet delivery, for example, a sheet guiding cylinder 6 or 8 for further sheet transport. All sheet guiding cylinders 6 to 9 and the turning drum 10 have sheet holding means which are designed as grippers and / or suction grippers.
  • the turning drum 10 is twice as large in relation to the blanket cylinder 2 or plate cylinder 1, ie formed half-speed. It comprises on the circumference each two gripper systems arranged by 180 degrees and suction pads 12.
  • Each of the aforementioned suction bars 12 extends parallel to an axis 17 of the turning drum 10 over the maximum format width of the sheet material 28 and has a plurality of suction nozzles 20 for fixing a sheet edge, in particular the trailing edge 29, of the sheet material to be processed.
  • the suction nozzles 20 are adjacent to the suction pads 12 in alignment over the maximum format width of the sheet material 28 at intervals arranged. Between these suction nozzles 20 free spaces 26 are arranged for dipping grippers of another gripper system.
  • a respective suction bar 12 is used, which forms a profile body with all suction nozzles 20 and ejector systems.
  • Each suction bar 12 comprises per suction nozzle 20 an ejector system with inlet opening 21 for compressed air, which merges into a flow channel 23 with end-side outflow opening 24 and an intake duct 22 which merges into a flow passage 23 in an opening 25, wherein in the region of the junction 25 an ejector insert 40 is arranged (see Fig. 2A . 3 . 4A, 4B ).
  • All inlet openings 21 of a respective suction bar 12 are coupled by means of air lines 18 with its own, upstream manifold 13 for compressed air and a manifold 13 upstream, own valve assembly 14.
  • each valve assembly 14 with an upstream rotary feedthrough 15 and a rotary feedthrough 15 upstream compressed air source 16 may be coupled.
  • the couplings are made by means of air ducts 18.
  • the rotary feedthrough 15 is arranged on the axis 17 of the turning drum 10.
  • the valve assembly 14 is coupled to a control device 19 signal and circuit technology and controllable such that each individual inlet opening 21 is supplied in each case with compressed air or the inlet openings 21 are each supplied in groups with compressed air.
  • a switching valve of the valve arrangement 14 can thus each be in operative connection with a respective suction nozzle 20 of a suction strip 12.
  • each one switching valve of the valve assembly 14 may be in operative connection with a group of suction nozzles 20 of a suction bar 12.
  • a single switching valve of the valve assembly 14 with all the suction nozzles 20 a suction pad 12 be in operative connection.
  • FIG. 2A Now, the core of an ejector system is shown in detail, wherein as the core element Ejektorprin 40 is provided.
  • the Ejektorprin 40 is disposed within the flow channel 23 in the region of the junction 25 of the suction channel 22.
  • the ejector insert 40 consists of a tubular element 41 whose cylindrical passage 41 A extends in the longitudinal direction of the flow channel 23.
  • the tubular element 41 is provided at least in its central length region with circumferentially distributed openings (suction openings, bores) 42, which establish a connection between the outer wall of the tubular element 41 and the inner cylindrical passage 41A.
  • the openings 42 are in FIG. 2 shown as check hatching. Number, size and shape of the openings can be selected according to physical conditions.
  • annular sealing element 43 and 44 is respectively arranged on the outside of the tubular element 41.
  • the ejector insert 40 is inserted coaxially in the flow channel 23.
  • a positioning of the Ejektor consos 40 within the flow channel 23 in the direction of the longitudinal axis of the tubular element 41 may be provided by stepped cylindrical paragraphs of different diameters in the flow channel 23 and corresponding to the Ejektor toxic 40.
  • annular sealing elements 43, 44 an annular space 45 is formed in the region between the sealing elements 43, 44 and between the tubular element 41 and the wall of the flow channel 23.
  • a fitting may be arranged separately or in connection with the ejector insert 40, at which the compressed air can be conducted into the ejector insert 40.
  • the ejector insert 40 is in the Figures 3 . 4A and 4B each drawn at the appropriate place in abstracted form of representation.
  • An ejector insert 40 is in Fig. 2 to provide correspondingly in each flow channel 23.
  • Fig. 3 shows a variant of the suction bar 12, which according to the embodiment according to Fig. 2 based.
  • the already described intake duct 22 of a suction nozzle 20 is additionally coupled to a ventilation opening 30.
  • the intake ducts 22 are coupled via the ventilation openings 30 in each case by means of air ducts 18 'to an upstream distributor 13' and to the distributor 13 'upstream valve arrangement 14' and this is coupled by means of an air duct 18 'via the rotary union 17 to the compressed air source 16.
  • Manifold 13 and valve assembly 14 may optionally, in addition to the compressed air supply of the inlet openings 21 take over the air supply of the ventilation openings 30.
  • the ventilation openings 30 can be acted upon by compressed air from the compressed air source 16 and support a quick detachment of the sheet material 28 of the suction nozzles 20, while the compressed air supply to the associated Inlet openings 21 may be temporarily interrupted.
  • the compressed air is preferably fed as a pressure surge at the respective ventilation opening 30.
  • a respective suction bar 12 is formed drivable in a pivoting movement 27.
  • control device 19 of the valve assembly 14 is predetermined, which applies suction nozzles 20 at the respective suction bar 12 with compressed air, i. activated or free of compressed air, d. H. should be disabled. Furthermore, the relatively short switching times are predetermined angle-correlated, so that the sheet edge can be recorded process-stable and released again. By individually taking into account the system times, switching times of the valve arrangement 14 are predetermined so that the boom detection process runs optimally.
  • the solution according to the invention is described below with reference to FIG. 3 . 4A and 4B described. According to the invention, it is intended to ensure the constantly optimal function of the ejector systems present on a suction strip 12.
  • the ejector systems consist of inlet opening 21, flow channel 23, inlet channel 22, ejector insert 40 and outlet opening 24 and are coupled to at least one suction nozzle 20.
  • a device for cleaning at least the suction channel 22 and the suction nozzles 20 of the ejector systems is provided.
  • a compressed-air pulse is introduced through the inlet opening 30 into the intake channel 22 via the air line 18 '.
  • a storage area C is formed in the lower part of the intake duct 22 and a blow-out jet E is generated in the upper area of the extraction duct 22.
  • the blow jet E cleans the intake duct 22 and also the suction nozzle 20 and exits the suction nozzle 20 as a blow-off jet F.
  • a disadvantage of the solution FIG. 3 is that only the upper portion of the intake passage 22 and the suction nozzle 20 are blown out, whereas the Ejektoricide 40 is rather even more contaminated with dirt.
  • FIGS. 4A and 4B is a further variant of the invention according to the device for cleaning the Ejektorsystems shown. This avoids the additional burden of the Ejektor conses 40 and ensures by means of cleaning air surges for cleaning and the ejector 40 all ejector systems.
  • FIG. 4A the basic function of the suction bar 12 is shown in a position for detecting a sheet material 28 on the surface of a storage drum (sheet guiding cylinder 9).
  • the suction bar 12 is tilted out of a basic position by means of a curved or swivel gear, so that the suction nozzles 20 are parallel to the surface of the storage drum indicated by dashed lines (Sheet guiding cylinder 9) lie there and can detect the sheet material 28 at its trailing edge 29.
  • the sheet material 28 is sucked by negative pressure by means of a suction jet B against the suction nozzle 20.
  • the suction jet B is generated by the compressed air steel A at the junction 25 according to the Venturi principle.
  • the compressed air jet A and the Suction B form together after the junction 25 the combined air jet D, which emerges from a corresponding outflow opening 24 of each ejector system 12 of the suction bar.
  • FIG. 4B the second variant of the solution according to the invention is shown, wherein only a first embodiment is shown here.
  • the general sealing of the outflow openings 24 on the suction bar 12 for all ejector systems contained can also be effected as a result of the movement of the suction bar 12.
  • the movement is carried out as a pivoting movement 27, as previously mentioned and in the FIGS. 4A and 4B is shown recognizable.
  • the suction strip 12 always assumes a defined starting position, in which a functional break is provided. This starting position is in FIG. 4B documented.
  • the outflow openings 24 of the ejector systems are positioned against a sealing stop 32 arranged on a cylinder wall 31 of the turning drum 10 and thus closed.
  • the sealing stopper 32 may be more elastic and firmly positioned or he may be less elastic and in the Position to the suction bar 12 to be arranged adjustable.
  • the sealing stopper 31 and is preferably made of an elastic material that can withstand load change in high cycle number. Thus, the discharge openings 24 are closed once each movement cycle of the suction bar 12 by the sealing stop.
  • a closure of the outflow opening 24 by means of a closure element that is operated from the outside or by a controller.
  • the suction bar 12 may also be assigned a closure mechanism, in which a closing element 27 can be pressed or positioned against the outflow openings 24 as a result of the pivoting movement 27.
  • an adjustable closure element or a switchable valve can be provided on the outflow openings 24. Then, the outflow opening 24 can be closed controlled in a staggered to the working cycle of the respective suction nozzle 20 cleaning cycle.
  • a closure of the outflow opening 24 by an operator at a time outside the machine operation can be done manually way. This is preferably carried out in a maintenance cycle that is outside the operating time of the turning device. This results in the advantageous effect that no additional disturbing Heilverwirbelungen be entered in the field of sheet transport on the turning drum 10. It also reduces air consumption.
  • cleaning blown air jets can also be automatically carried out by the compressed air suppliers. But it can also be done in all functional breaks each a
  • the Blas KunststoffstSht can be realized with the existing valve assemblies 14 and the existing control device 19.
  • the designedsblas KunststoffstSht can be initiated cyclically or freely selectable.
  • the turning drum 10 comprises at least one pivotable suction bar 12.
  • the sheet-fed printing machine can be operated either in straight printing or perfecting.
  • perfecting the turning drum 10 is operated in reverse pressure.
  • a sheet material 28 at the rear edge by means of the suction nozzles 20 on the suction bar 12 of one of the turning drum 10 upstream sheet guiding cylinder 9 (three-drum turn) or an impression cylinder 7 (when Eintrommelfirst) and other grippers, the beater 10 is supplied.
  • Each sucker bar 12 is provided with suction nozzles 20 and ejector systems, which consist of inlet openings 21, flow channels 23, suction channels 22 and outflow openings 24, and formed from a profile body.
  • Each sucker bar 12 may be assigned its own manifold 13 and its own valve assembly 14, which are arranged on the turning drum 10.
  • Each valve assembly 14 is coupled switching and signal technology with a control device 19.
  • a switching valve of the valve assembly 14 may be in operative connection with a respective suction nozzle 20 or with a group of suction nozzles 20 a suction bar 12. It may also be a switching valve of the valve assembly 14 with all suction nozzles 20 a suction bar 12 in operative connection.

Landscapes

  • Cleaning In General (AREA)
  • Feeding Of Articles By Means Other Than Belts Or Rollers (AREA)

Claims (9)

  1. Cylindre de guidage de feuilles, comportant au moins un dispositif de retenue de feuilles pouvant être commandé par système pneumatique pour machine de traitement, comprenant au moins une baguette d'aspiration (12) dotée de buses d'aspiration disposées à intervalle (20) pour la fixation de feuilles de matériau et une source d'air comprimé raccordée au niveau de la canalisation (16),
    chaque buse d'aspiration (20) d'une baguette d'aspiration (12) étant couplée à un système éjecteur qui est réalisé sous forme d'un orifice d'afflux (21) avec un canal d'écoulement (23), d'un orifice d'évacuation disposé à son extrémité (24), d'un canal d'aspiration (22) qui est constitué à une embouchure (25) existante débouchant dans le canal d'écoulement (23),
    plusieurs ou la totalité des orifices d'afflux (21) étant couplés à un système de commande d'air (13, 14, 19) et à une source d'air comprimé (16) générant de l'air comprimé,
    caractérisé en ce
    que, dans chaque système éjecteur à l'intérieur du canal d'écoulement (23), au niveau de l'embouchure (25) du canal d'aspiration (22), un insert éjecteur (40) générant une dépression grâce de l'air comprimé est prévu,
    l'insert éjecteur (40) présentant un passage cylindrique (41A) qui s'étend dans le sens longitudinal du canal d'écoulement (23),
    que des moyens de génération d'un choc d'air soufflé dirigé dans le sens inverse au sens d'aspiration par les systèmes éjecteurs et/ou plusieurs de la totalité des buses d'aspiration (20) sont prévus,
    les orifices situés au niveau de la circonférence des buses d'aspiration (20) étant libérés pendant l'exécution du choc d'air soufflé.
  2. Système de guidage de feuilles selon la revendication 1,
    caractérisé en ce
    qu'il est prévu des moyens de génération d'un choc d'air soufflé dirigé dans le sens inverse du sens d'aspiration par les systèmes éjecteurs et plusieurs de la totalité des buses d'aspiration (20).
  3. Système de guidage de feuilles selon la revendication 1 ou 2, caractérisé en ce que chaque baguette d'aspiration (12) est disposée dans un tambour tournant (10) et que, pour détecter et retransférer des feuilles de matériau (28) en mode tournant en exécutant un mouvement de pivotement (27) de manière à ce que la baguette d'aspiration (12), après le dépôt d'une première feuille de matériau (28) et avant le prélèvement d'une seconde feuille de matériau suivante (28), prenne une position initiale et qu'il est prévu un moyen agissant en position initiale pour dévier l'air comprimé.
  4. Système de guidage de feuilles selon la revendication 3,
    caractérisé en ce
    que sont disposés, au niveau du ou en liaison avec le tambour tournant (10), un ou plusieurs éléments d'étanchéité associés à tous les orifices d'évacuation (24) de toutes les buses d'aspiration (20) de la baguette d'aspiration (12), les éléments d'étanchéité étant disposés de manière à agir dans la position initiale.
  5. Système de guidage de feuilles selon la revendication 3 ou 4,
    caractérisé en ce
    que, au niveau du ou en liaison avec le tambour tournant (10), il est prévu une butée d'étanchéité (32) associée à tous les orifices d'évacuation (24) de toutes les buses d'aspiration (20) de la baguette d'aspiration (12), la butée d'étanchéité (32) étant disposée de manière à colmater les orifices d'évacuation (24) de la baguette d'aspiration (12) dans la position initiale.
  6. Système de guidage de feuilles selon la revendication 3 ou 4,
    caractérisé en ce que,
    au niveau du ou en liaison avec le tambour tournant (10), un élément de fermeture contrôlable associé à tous les orifices d'évacuation (24) de toutes les buses d'aspiration (20) de la baguette d'aspiration (12) est prévu, l'élément de fermeture pouvant être positionné de manière à établir en position initiale une isolation par rapport aux orifices d'évacuation (24) de la baguette d'aspiration (12).
  7. Système de guidage de feuilles selon la revendication 3 ou 4,
    caractérisé en ce
    qu'au niveau du ou en liaison avec le tambour tournant (10), un élément de fermeture actionnable manuellement associé à tous les orifices d'évacuation (24) de toutes les buses d'aspiration (20) de la baguette d'aspiration (12) est prévu, l'élément de fermeture pouvant être positionné de manière à établir en position initiale une isolation par rapport aux orifices d'évacuation (24) de la baguette d'aspiration (12).
  8. Système de guidage de feuilles selon la revendication 1,
    caractérisé en ce
    que, au niveau de chaque baguette d'aspiration pour chaque système éjecteur, un orifice d'aération (30) est pratiqué au niveau du canal d'aspiration (22) et qu'il est prévu pour chaque orifice d'aspiration (30) une alimentation en air comprimé par laquelle de l'air comprimé peut être introduit dans le canal d'aspiration (22) au moyen d'un dispositif à soupape (14, 14') contrôlable par un dispositif de commande (19).
  9. Système de guidage de feuilles selon la revendication 8,
    caractérisé en ce
    que le dispositif à soupape (14, 14') est couplé à chaque buse d'aspiration (20) de la baguette d'aspiration (12) de manière à ce que, lors de l'introduction d'air soufflé dans le canal d'aspiration (22), aucun air soufflé ne soit introduit dans l'orifice d'afflux (21)
    ou qu'il est prévu dans le canal d'aspiration (22) un dispositif de fermeture qui est situé en amont de l'embouchure (25).
EP14174902.8A 2013-07-24 2014-06-30 Cylindre de guidage de feuilles équipé d'un dispositif de retenue de feuilles pneumatique Not-in-force EP2835259B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102013214454.7A DE102013214454A1 (de) 2013-07-24 2013-07-24 Bogenführungszylinder mit einer pneumatischen Bogenhaltevorrichtung

Publications (3)

Publication Number Publication Date
EP2835259A2 EP2835259A2 (fr) 2015-02-11
EP2835259A3 EP2835259A3 (fr) 2015-08-19
EP2835259B1 true EP2835259B1 (fr) 2016-10-05

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DE (1) DE102013214454A1 (fr)

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CN108528020A (zh) * 2018-05-30 2018-09-14 大连奥特马工业有限公司 塑料薄膜反面印刷导向结构
DE102019204872A1 (de) * 2018-06-07 2019-12-12 Heidelberger Druckmaschinen Ag Verfahren zum Betrieb einer Wendeeinrichtung einer Druckmaschine
EP3640033B1 (fr) * 2018-10-15 2021-08-11 Heidelberger Druckmaschinen AG Machine d'impression avec un dispositif de maintien pneumatique pour feuilles en matière imprimée
CN109382939B (zh) * 2018-12-14 2024-04-09 常熟市飞龙无纺机械有限公司 汽车内饰件成型机的转筒式成型装置

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DE4315548C2 (de) 1993-05-10 2001-05-31 Heidelberger Druckmasch Ag Mehrwegabsperrschieber für die Saugluft von Sauggreifern auf einer Bogenübergabetrommel
DE4335185C2 (de) 1993-10-15 1997-04-30 Kba Planeta Ag Einrichtung zum Betätigen von Saugluftsteuerelementen
DE20102400U1 (de) 2001-02-10 2001-04-26 Roland Man Druckmasch Bogenführungszylinder mit einem pneumatisch steuerbaren Bogenhaltesystem
DE10350726A1 (de) 2003-10-30 2005-06-02 Man Roland Druckmaschinen Ag Antreibbares Saugersystem an einem Bogenführungszylinder einer Verarbeitungsmaschine
DE102006044156A1 (de) * 2006-09-15 2008-03-27 Wohlenberg Buchbindesysteme Gmbh Vorrichtung und Verfahren zur Druckweiterverarbeitung
DE102006055278B3 (de) * 2006-11-23 2008-01-31 Technotrans Ag Reinigungsverfahren sowie Reinigungsvorrichtung für eine Zylinderoberfläche einer Druckmaschine
DE102009014632B4 (de) 2008-10-04 2023-12-21 Hans-Jürgen Kasprich Einrichtung zur Versorgung eines Unterdruckverbrauchers mit Unterdruck
DE102011084210B4 (de) 2011-10-10 2024-04-25 manroland sheetfed GmbH Bogenführungszylinder mit wenigstens einer pneumatisch steuerbaren Bogenhaltevorrichtung
DE102011084212B4 (de) * 2011-10-10 2022-01-20 manroland sheetfed GmbH Vorgreifer einer Verarbeitungsmaschine für Bogenmaterial

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DE102013214454A1 (de) 2015-01-29
EP2835259A2 (fr) 2015-02-11

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