EP1184174A2 - Machine de traitement de feuilles - Google Patents

Machine de traitement de feuilles Download PDF

Info

Publication number
EP1184174A2
EP1184174A2 EP01116664A EP01116664A EP1184174A2 EP 1184174 A2 EP1184174 A2 EP 1184174A2 EP 01116664 A EP01116664 A EP 01116664A EP 01116664 A EP01116664 A EP 01116664A EP 1184174 A2 EP1184174 A2 EP 1184174A2
Authority
EP
European Patent Office
Prior art keywords
air
throttle
air nozzles
throttled
nozzles
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP01116664A
Other languages
German (de)
English (en)
Other versions
EP1184174A3 (fr
EP1184174B1 (fr
Inventor
Eckart Dr. Frankenberger
Michael Gieser
Christian Görbing
Peter Dr. Hachmann
Karl-Heinz Helmstädter
Christian Hieb
Ruben Dr. Schmitt
Günter Stephan
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.)
Heidelberger Druckmaschinen AG
Original Assignee
Heidelberger Druckmaschinen AG
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 Heidelberger Druckmaschinen AG filed Critical Heidelberger Druckmaschinen AG
Publication of EP1184174A2 publication Critical patent/EP1184174A2/fr
Publication of EP1184174A3 publication Critical patent/EP1184174A3/fr
Application granted granted Critical
Publication of EP1184174B1 publication Critical patent/EP1184174B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F25/00—Devices for pressing sheets or webs against cylinders, e.g. for smoothing purposes

Definitions

  • the invention relates to a machine for processing sheets, in particular on a sheet-fed rotary printing press, with a transport cylinder for transporting the Arc, which deviates from an axis parallel to the transport cylinder Has air nozzles offset towards each other, and with a guide device for Forward the sheet, which has air nozzles and is assigned to the transport cylinder the preamble of claim 1.
  • the invention has for its object one of the type mentioned appropriate machine to create, in which a particularly stable sheet travel is guaranteed.
  • the transport cylinder has only the throttled air nozzles and has the control device both throttled air nozzles and the unthrottled air nozzles.
  • the transport cylinder only the throttled air nozzles and the control device only the unthrottled air nozzles on.
  • the transport cylinder has only the unthrottled Air nozzles and the control device only the throttled air nozzles.
  • the transport cylinder only has the unthrottled air nozzles and has the variant Guide device both the throttled air nozzles and unthrottled air nozzles.
  • the transport cylinder has both throttled air nozzles as well as the unthrottled air nozzles and the control device only has the throttled Air jets on.
  • the transport cylinder has both some of the throttled air nozzles as well as some of the unthrottled air nozzles and has the Control device the other of the throttled air nozzles and the other of the unthrottled Air jets on.
  • preference is given to those in which the Guide device has throttled air nozzles and unthrottled air nozzles.
  • the throttled air nozzles of the transport cylinder and / or the unthrottled air nozzles of the transport cylinder can be suction air nozzles, the transport cylinder being a so-called suction air drum.
  • the transport cylinder is preferably designed as a so-called blowing air drum, by the throttled air nozzles of the transport cylinder and / or the unthrottled Air nozzles of the transport cylinder are designed as blowing air nozzles.
  • the throttled and the unthrottled air nozzles of the transport cylinder are preferred both the throttled and the unthrottled air nozzles of the transport cylinder as Blown air nozzles designed.
  • the throttled air nozzles of the control device and / or the unthrottled air nozzles of the Guide device can be suction air nozzles, the guide device being a so-called Suction air box, wand or rake.
  • the guide device is preferably in the form of a so-called blown air box, rod or rake formed by the throttled air nozzles of the guide device and / or the unthrottled air nozzles of the guide device are designed as blown air nozzles. Both the throttled and the unthrottled air nozzles are preferably the Guide device designed as blowing air nozzles.
  • Each of the throttled air nozzles mentioned in the guide device and / or the Transport cylinder is in an embodiment of the invention with an air throttle pneumatically connected to an air pressure generator.
  • Air pressure generator as a blowing air generator
  • Pressure generator is the or each with the pressure generator via the air throttle connected throttled air nozzle a throttled blowing air nozzle.
  • the air pressure generator as a suction air or a Vacuum generating vacuum generator is the or each with the vacuum generator throttled air nozzle connected via the air throttle, a suction air nozzle.
  • the air throttle can be removed from the respective throttled air nozzle Air duct system to which the throttled air nozzles are connected. This is advantageous if an air throttle is provided, which is via the air line system is pneumatically connected to several of the throttled air nozzles at the same time.
  • the Air throttle and the air nozzle throttled by the latter can also be a unit in Form the shape of a throttle nozzle. In the latter case, each of the throttled air nozzles is (Throttle nozzles) assigned its own air throttle, which is in the throttled air nozzle (Throttle nozzle) is arranged.
  • the air throttle is part of it Air filter-like throttle piece, which has a flow resistance for the suction or blown air forms.
  • the throttle piece is a textile layer that is woven or non-woven can be.
  • the throttle piece can also be a porous and therefore air-permeable Be a sponge that is foamed from a plastic.
  • the air throttle is included in the suction or flow path Blown air protruding air weirs occupy, the vortex chambers limit.
  • the air throttle is a so-called Perforated plate labyrinth.
  • Figure 1 is an example of a sheet 1 processing machine 2, a sheet-fed rotary printing machine shown.
  • Two cylinders 3, 4 leading the bow 1 is one Transport cylinder 5 interposed, the fresh in the machine 2 on both sides printed sheet 1 takes over from the cylinder 3 and passes to the cylinder 4.
  • the Cylinders 3, 4 are impression cylinders in different printing units of machine 2.
  • the Transport cylinder 5 has a circular profile and has at least one row of grippers 6 to hold the sheet 1 at its front edge and continues to have in one Circumferential surface 7 throttled air nozzles 8, 9, which act as blowing air nozzles.
  • the air nozzles 8, 9 are arranged in a row of nozzles which extend in the circumferential direction of the Transport cylinder 5 extends longitudinally, which none to the axis of rotation of the Transport cylinder 5 is parallel direction. Although this cannot be seen from FIG. 1, however, the air nozzles 8, 9 do not only belong to the circumferentially extending one Nozzle row but also other rows of nozzles that are parallel to the axis Extend axis of rotation of the transport cylinder 5 longitudinally.
  • the air nozzles 8, 9 thus form Intersection points of a nozzle grid in which the rows of nozzles running parallel to the axis are located cut with the row of nozzles running in the circumferential direction.
  • a guide device 10 is arranged beneath it, the guide surface of which, with throttled air nozzles 11, 12 and unthrottled air nozzles 46, 47, is curved approximately equidistantly from the transport cylinder 5 around the latter.
  • the air nozzles 11, 12 and 46, 47 act as blowing air nozzles.
  • the throttled air nozzles 8, 9 and 11, 12, the air outlet direction of which is radial relative to the transport cylinder 5, are pneumatically connected via a first air line system 13 to a first air pressure generator 14, which pressurizes the first air line system 13 with an air or excess pressure p 1 , which is much greater than an air or overpressure p 2 with which a second air pressure generator 15 acts on a second air line system 16, ie the following applies: p 1 >> p 2 .
  • the motor-driven air pressure generators 14, 15 are suitable fans for blowing air generation.
  • the second air line system 16 opens into the unthrottled air nozzles 46, 47 of the guide device 10, which can be Venturi or pulse jet nozzles.
  • the air nozzle 46 hides the one behind it Air nozzle 47, which is illustrated by the reference numerals in parentheses.
  • the unthrottled air nozzles 46, 47 are at an angle to the transport direction of the sheet 1 opposite direction of air outlet.
  • spring bearings of the throttled air nozzles 11, 12 of the guide device 10 in Figure 1 in deviation from its actual design - cf.
  • the air nozzle 12 is in a hinge 48 formed on the Transport cylinder 5 to and from the latter mounted linearly adjustable.
  • the hinge 48 consists of a stepped joint bore 49 in a wall (ceiling wall) 50, the Top forms the guide surface, and a slidably in the joint bore 49th inserted nozzle body 51, which is also offset.
  • a compressible, helical spring 52 is between the nozzle body 51, which in the spring 52nd is inserted, and the wall 50 is held under tension.
  • the one in the joint bore 49 arranged and wound around a tapered shoulder of the nozzle body 51
  • Spring 52 is supported with one end on a thickened paragraph 53 of the Nozzle body 51 and its other end on a shoulder 54 of the joint bore 49 from.
  • a radial projection 55 in the form of a transverse pin on the nozzle body 51 prevents its striking an underside of wall 50 that in certain operating situations the spring 52 pushes the nozzle body 51 too far out of the articulated bore 49.
  • a den The end of the nozzle body 51 which carries the projection 55 projects into a throttle outlet 17 Air throttle arranged under the wall 50 in the guide device 10, the different embodiments with the reference numerals 416, 516, 616, 716 and 816-cf. Figures 4 to 8 - are designated and which are part of the first Air duct system 13 is.
  • An air throttle corresponding to the air throttle 416, 516, 616, 716 or 816 is each of the throttled air nozzles 8, 9 of the transport cylinder 5 and each of the throttled air nozzles 11, 12 assigned to the control device 10.
  • the blown air flows from the throttle outlet 17 into the nozzle body 51 or its body Nozzle bore 56 over.
  • the air throttle 416, 516, 616, 716 or 816 has the throttle outlet 17 in a throttle cover 18 and in one Throttle plate 20 has a throttle inlet 19.
  • the throttling is throttled air nozzles 8, 9 and 11, 12 by means of the air throttle 416, 516, 616, 716 or 816 reproduced highly schematized by the throttled air nozzles 8, 9 and 11, 12 with the known throttle symbol are shown.
  • the throttle cover 18 and the throttle base 20 form the upper and lower limits an interposed throttle chamber 21, which is from the blowing air of the first Air pressure generator 14 is flowed through.
  • air restrictors 416, 516, 616, 716 or 816 Embodiments shown in Figures 4 to 8 and with reference thereto are described below.
  • a bed 22 from bulk particles, such as. B. granules, fibers, chips or beads, on both sides is held together by a network or grid 23.
  • the bulk solids can their stabilization can also be sintered together. Points between the bulk particles the bed 22 on communicating cavities through which the blowing air flows.
  • the bed 22 completely fills the cross section of the throttle chamber 21, so that all of the blowing air must flow through the bed 22 and through it Throttling on the bulk solids and turbulence in the cavities throttled becomes.
  • the bed 22 is separated by an in the throttle chamber 21 used textile throttle piece 24, such as. B. a fabric or Nonwoven, replaced.
  • textile throttle piece 24 such as. B. a fabric or Nonwoven
  • this can be made from a single consist of a sufficiently voluminous layer or wound into a multi-layer insert or be spanned in the throttle chamber 21.
  • the flowing through the throttle piece 24 Blown air is caused by accumulation of threads or fibers and by swirling in Pores of the throttle piece 24 throttled.
  • the air baffles 25 and 26 have a very strong surface roughness, the z. B. is caused by treatment of the air guide walls 25 and 26 by means of sandblasting and that for reducing the flow velocity of the blown air in the air duct 27 contributes by increasing friction.
  • a sandwich construction of the air throttle 716 a, b or c is also conceivable, in which the Throttle plate 18 and the throttle plate 19 are designed as lamellae, between which there is an intermediate lamella from which the meandering air duct and the Eddy chambers are spared.
  • Such an air throttle is, for. B. by punching the Intermediate lamella, inexpensive to manufacture and can be a lamellar in multiple arrangement Form throttle package.
  • FIG 8 a section of the air throttle 816 is shown, which from in the throttle chamber There are 21 perforated plates 38 and 39 arranged one above the other. From the perforated plates 38 and 39 each has at least one hole 40 (or 41) which is offset in the plane of the plate at least one hole 41 (or 40) of the adjacent perforated plate is arranged. Thus, the holes 40 and 41 forming a meandering air channel are out of alignment with each other and in overlap with closed plate surfaces of the perforated plates 38 and 39. Spacers 42 and 43 keep the perforated plates 38 and 39 at a distance from one another and determine volumes of vortex chambers lying between perforated plates 38 and 39 44 and 45, through which the blown air flows.
  • the throttling effect of the air throttle 816 is based as well the throttling effect of air restrictors 616 and 716 in a reduction in Flow velocity of the blown air through multiple redirection of the air flow in the throttle chamber 21.
  • the air nozzles 11, 12 and 46, 47 Guide device 10 between this or its guide surface and a current one Front of the sheet creates a second air cushion B.
  • the air nozzle 8, 9 during its transport past the guide device 10 and 11, 12 and 46, 47 sheet 1 blown on both sides moves on a very stable and almost free of lateral acceleration trajectory.
  • the sheet 1 can also be very close to the guide device 10 and nevertheless with absolute certainty without striking the guide device 10 the latter are transported past.
  • the spring-loaded mounting of the air nozzles 11, 12 shown in FIGS. 2 and 3 is advantageous with regard to the processing of sheets 1 of different substrate thickness.
  • FIG. 2 - stands out more from the transport cylinder 5 than a thin sheet (paper sheet) 1 due to its higher inherent rigidity and the greater centrifugal force - cf. Figure 3 - which is less stiff and lighter. So that the throttled air nozzle 12 acts optimally pneumatically on the respective sheet 1, both in the thick and in the thin sheet 1, the air nozzle 12 is automatically extended from the guide device 10 by the spring 52 during processing of the sheet 1 and moved up to the sheet 1 until there is a balance of forces between forces F F and F B.
  • F F denotes a dynamic pressure force caused by the expelled blown air 61 of a local air jam between the air nozzle 12 and the sheet 1.
  • the dynamic pressure force F B increases until the equilibrium of forces is reached, at which an optimal distance 60 of the air nozzle 12 to the bend 1 corresponds to the close range of the optimal effectiveness of the air nozzle 12.
  • Figure 3 - moves the air nozzle 12 further than with the cardboard sheet - cf.
  • Figure 2 off, so that the distance between the air nozzle 12 and the sheet 1 in each of the two cases is set to the optimum distance 60, which is independent of the printing material, and thus an automatic printing material adaptation of the air nozzle 12 takes place.
  • the spring bearing also causes an automatic adaptation of the air nozzle 12 to the Machine speed by the air nozzle 12 during each transverse movement of the Bow 1 is tracked and by this self-regulation of the air nozzle 12 optimal distance 60 is maintained.
  • the transverse movement can be caused by an increase in machine speed, ie an increase in the rotational speed of the transport cylinder 5, as a result of which the centrifugal force acting on the sheet 1 increases and the distance between the rear edge 57 and the transport cylinder 5 increases and decreases to the guide device 10.
  • the sheet 1 presses contactlessly, ie without touching the air nozzle 12, via an air cushion located between the sheet 1 and the air nozzle 12 and caused by the local air congestion and against the action of the spring 52, the air nozzle 12 back so far in the direction of the guide device 10 until the optimal distance 60 lost due to the transverse movement is restored very quickly.
  • Appropriate adjustment of the spring force F F or a spring characteristic of the spring 52 relative to the dynamic pressure force F B that occurs is a prerequisite for proper functioning.

Landscapes

  • Feeding Of Articles By Means Other Than Belts Or Rollers (AREA)
  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
  • Delivering By Means Of Belts And Rollers (AREA)
  • Treatments Of Macromolecular Shaped Articles (AREA)
  • Photographic Processing Devices Using Wet Methods (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)
EP01116664A 2000-08-31 2001-07-16 Machine de traitement de feuilles Expired - Lifetime EP1184174B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10042887 2000-08-31
DE10042887A DE10042887A1 (de) 2000-08-31 2000-08-31 Maschine zur Verarbeitung von Bogen

Publications (3)

Publication Number Publication Date
EP1184174A2 true EP1184174A2 (fr) 2002-03-06
EP1184174A3 EP1184174A3 (fr) 2004-03-17
EP1184174B1 EP1184174B1 (fr) 2006-04-05

Family

ID=7654494

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01116664A Expired - Lifetime EP1184174B1 (fr) 2000-08-31 2001-07-16 Machine de traitement de feuilles

Country Status (5)

Country Link
US (1) US6662722B2 (fr)
EP (1) EP1184174B1 (fr)
JP (1) JP2002137845A (fr)
AT (1) ATE322383T1 (fr)
DE (2) DE10042887A1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10152593A1 (de) * 2001-10-24 2003-05-08 Koenig & Bauer Ag Einrichtung zur Bedruckstoff- und Druckwerkskühlung mittels gekühlter Blasluft an Bogenrotationsdruckmaschinen
EP1352738A3 (fr) 2002-04-08 2004-08-04 Komori Corporation Appareil de guidage de feuilles
DE10310690A1 (de) * 2002-04-12 2003-10-30 Heidelberger Druckmasch Ag Bogenführungseinrichtung in einer bogenverarbeitenden Maschine
DE10315193A1 (de) * 2002-04-18 2003-10-30 Heidelberger Druckmasch Ag Gegendruckzylinder in einer Wendeeinrichtung einer bogenverarbeitenden Maschine
JP4503999B2 (ja) * 2002-12-12 2010-07-14 ハイデルベルガー ドルツクマシーネン アクチエンゲゼルシヤフト シートガイド装置
DE102004004396A1 (de) * 2004-01-29 2005-08-11 Heidelberger Druckmaschinen Ag Vorrichtung zur Erzeugung gedrosselter Blas- oder Saugluft
US9776809B1 (en) * 2016-03-31 2017-10-03 Core Flow Ltd. Conveying system with vacuum wheel

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2753181A (en) * 1953-05-14 1956-07-03 Powers Chemico Inc Feed mechanism for web material
GB865376A (en) * 1958-10-14 1961-04-19 Georg Spiess A separating device for detaching sheets in sheet feeding apparatus
US3823743A (en) * 1970-11-06 1974-07-16 Dunlap Holdings Ltd Pressure reducing device
DE2137115A1 (de) * 1971-07-24 1973-02-01 Maschf Augsburg Nuernberg Ag Bogenfoerdereinrichtung
US4043360A (en) * 1975-07-16 1977-08-23 Incontrol Ltd. Pressure reducing device for fluids
US4411292A (en) * 1981-11-30 1983-10-25 Arminio Schiller Fluid flow restrictor device
DD229360A1 (de) * 1984-11-27 1985-11-06 Polygraph Leipzig Blaslufttrommel als uebergabetrommel und auslagetrommel an bogenverarbeitenden maschinen
US5156090A (en) * 1989-06-24 1992-10-20 Heidelberger Druckmaschinen Ag Device for smoothing a sheet on an impression cylinder of a sheet-fed rotary printing machine
DE4223555A1 (de) * 1991-08-12 1993-02-18 Koenig & Bauer Ag Trommel zum transportieren von bogen
US5327941A (en) * 1992-06-16 1994-07-12 The United States Of America As Represented By The Secretary Of The Navy Cascade orificial resistive device
DE4436955C2 (de) * 1994-10-15 1999-11-11 Roland Man Druckmasch Vorrichtung zum berührungslosen Bogentransport
DE19503110B4 (de) * 1995-02-01 2009-01-29 Heidelberger Druckmaschinen Ag Bogenleiteinrichtung für Druckmaschinen
DE19829095C2 (de) * 1998-06-30 2002-04-25 Roland Man Druckmasch Bogenführungseinrichtung in einer Druckmaschine
DE19905095C2 (de) * 1999-02-09 2001-02-22 Roland Man Druckmasch Bogenführungseinrichtung für eine Druckmaschine
US6270074B1 (en) * 1999-04-14 2001-08-07 Hewlett-Packard Company Print media vacuum holddown

Also Published As

Publication number Publication date
EP1184174A3 (fr) 2004-03-17
ATE322383T1 (de) 2006-04-15
EP1184174B1 (fr) 2006-04-05
DE50109420D1 (de) 2006-05-18
US6662722B2 (en) 2003-12-16
DE10042887A1 (de) 2002-03-14
JP2002137845A (ja) 2002-05-14
US20020096068A1 (en) 2002-07-25

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