EP1577244B1 - Dispositif de soufflage pour une poche de pliage - Google Patents

Dispositif de soufflage pour une poche de pliage Download PDF

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Publication number
EP1577244B1
EP1577244B1 EP05101033A EP05101033A EP1577244B1 EP 1577244 B1 EP1577244 B1 EP 1577244B1 EP 05101033 A EP05101033 A EP 05101033A EP 05101033 A EP05101033 A EP 05101033A EP 1577244 B1 EP1577244 B1 EP 1577244B1
Authority
EP
European Patent Office
Prior art keywords
nozzle
sheet
folding pocket
pocket
folding
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.)
Expired - Lifetime
Application number
EP05101033A
Other languages
German (de)
English (en)
Other versions
EP1577244A1 (fr
Inventor
Markus Belmann
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 EP1577244A1 publication Critical patent/EP1577244A1/fr
Application granted granted Critical
Publication of EP1577244B1 publication Critical patent/EP1577244B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B65H45/00—Folding thin material
    • B65H45/12—Folding articles or webs with application of pressure to define or form crease lines
    • B65H45/14—Buckling folders
    • B65H45/142—Pocket-type folders
    • B65H45/144—Pockets or stops therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2220/00—Function indicators
    • B65H2220/09—Function indicators indicating that several of an entity are present
    • 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
    • B65H2406/12—Means using fluid made only for exhausting gaseous medium producing gas blast
    • B65H2406/122—Nozzles

Definitions

  • the invention relates to a blowing device for a folding pocket according to the preamble of claim 1.
  • blowing devices are used to support the incoming sheet in a folder pocket, particularly for thin, unstable paper sheets.
  • the usual folding pockets for folding machines consist of a top and bottom frame, which are equipped along the sheet travel direction with guide elements. Upper and lower frame are spaced apart from each other at a distance, so that the incoming sheet, driven by the folding rollers, can enter into the folding pocket unhindered.
  • a sheet stop is mounted, the stop fingers protrude between the guide elements from the upper to the lower frame.
  • the sheet stop is adjustable to the desired sheet inlet length.
  • the blowpipes have air outlet holes which are distributed at intervals in blowpipe longitudinal direction and directed towards the lower arc surface.
  • air is blown from the upper side of the sheet, so that the sheets are passed between two air cushions to the stop.
  • the frictional force can be significantly reduced, and it is avoided that the sheet is pressed by the unilateral blown air against the other Falztaschengephin.
  • this device has the disadvantage that the position of the arc between two air streams, which flow from the top and bottom of the sheet, is very difficult to adjust. Therefore, it can still not be guaranteed by this arrangement that the sheet actually abuts the stop at the end of the pocket, so that the fold can form at the desired location.
  • the GB-A-512 869 shows a Taschenfalzmachine with a blowing device, which directs the leading edge of a sheet by blowing air into a folding pocket, thus preventing damage during the entry of the sheet into the folding pocket.
  • the blowing device is mounted in the lower of the two folding pocket associated conveyor rollers and provides a directed in the direction of feed of the folding pocket blast air.
  • venturi nozzles in sheet-processing devices which have a flow component in the sheet running direction in order to guide the sheet and to drive it in the direction of movement.
  • Such devices are for example from the German patent applications DE 11 86 473 . DE 197 21 390 . DE 198 22 059 and DE 101 57 082 known.
  • the invention is therefore an object of the invention to provide a blowing device with which it is possible to prevent the effect of unintentional buckling of a sheet entering a folding pocket, to ensure that the leading edge of the sheet actually reaches the stop, so that the buckling the bow is done in the right place in a defined way.
  • This object is achieved by means of the blowing device according to the invention for a folding pocket with the characterizing features of claim 1.
  • This air flow of the blowing device according to the invention causes an additional force which drives the sheet in the direction of the stop of the folding pocket. It is thereby achieved that the force acting on the sheet from the stop is the force which causes the sheet to be gripped and folded at the desired location by the folding rollers.
  • the blowing air nozzle is designed such that the air flow is substantially parallel to the direction of movement of an incoming sheet.
  • the air flow which is parallel to the arc, creates a negative pressure, which draws the arc in the direction of the blowing device, so that the arc is held along the air flow on an air cushion.
  • the sheet is lifted from the other side of the folding pocket, so that on this side of the frictional resistance is significantly reduced.
  • the blowing air nozzle is a Venturi nozzle.
  • the blowing air nozzle has a nozzle body, wherein the nozzle body comprises a Blas Kunststoffzu Gustav, flows through the blown air into a nozzle chamber to exit through a slit-shaped outlet opening.
  • the nozzle chamber is configured substantially semicircular, whereby a good nozzle effect and a uniform blown air distribution along the nozzle opening can be achieved.
  • the nozzle chamber is formed partly by the nozzle body and partly by a separate plate, wherein the separate plate is attached to the nozzle body, in particular glued.
  • the cavity can be easily manufactured within the blown air nozzle.
  • other methods of joining known to those skilled in the art are applicable.
  • the slot-shaped outlet opening is formed partly by the nozzle body and partly by this separate plate. Since the slot-shaped outlet opening is a substantially rectangular slot, a cost-effective production of the slot-shaped outlet opening is achieved by this arrangement.
  • a suitable molding method eg. As injection molded plastic, can be generated by the separate plate especially for injection molding unsuitable shapes in a simple manner.
  • the blowing device has a nozzle bar, wherein the nozzle bar comprises a plurality of nozzle bodies.
  • the plurality of nozzle bodies are arranged in a row, wherein the slot-shaped outlet openings essentially produce an air flow which has a substantially identical direction and size for all blown air nozzles.
  • the nozzle beam is integrally molded.
  • the blowing device is mounted in a folding pocket above the transport path.
  • the blast air nozzles flow to the incoming sheet from above.
  • the sheet of the lower folding pocket to which the sheet would primarily abut and there the largest frictional forces between the sheet and folding pocket boundary, pulled away, so that the sheet in principle without contact through the folding pocket along the air cushion between the upper Falztaschenbegrenzung and bow slides to the stop.
  • a device for ionizing the blowing air is connected to the blowing device.
  • the ionized air used to blow the sheets can reduce the electrostatic charge on the sheets so that they have less of a tendency to adhere to the side edges of the fold pocket due to electrostatic forces, which would result in high frictional forces.
  • a plurality of Blas Kunststoffdüsen are arranged transversely to the inlet direction along a folding pocket.
  • the invention relates to a folding pocket with a corresponding Blas Kunststoffvorraum and a folding machine with such a folding pocket.
  • FIG. 1 an arc 8 is shown, which is just folded between the folding rollers 3, 6 ,.
  • the sheet was fed from the feed rollers 1 to the upper feed roller 2 and lower feed roller 3, which simultaneously operates as folding rollers 3.
  • the leading edge of the incoming sheet 8 tilts downwards due to gravity G, but after the distance L is guided upwards into the folding pocket 20 by a projection of the folding pocket bottom 4.
  • the folding pocket is at an angle ⁇ to the horizontal.
  • the sheet 8 slides along the folding pocket lower side 4 and folding pocket upper side 7 up the folding pocket 20, driven by the upper feed roller 2 and the lower feed roller 3 to the stop 5.
  • the feed rollers 2, 3 push the sheet further, so that an upset in the compression space between the three rollers 2, 3, 6 forms, which sags and is finally detected by the Falzwalzencru 3, 6.
  • FIG. 2 the forces acting on the bow 8 are shown. These are composed of the weight G, the frictional force F 4 , which occurs between the sheet 8 and the Falztaschenunterseite 4, and in particular depends on the material properties of the sheet and its electrostatic charge, the normal force N 4 , which on the arc in the Falztasche 20 acts, which depends in particular on the angle ⁇ of the folding pocket 20, and the counterforce on the stop N. 5
  • This counterforce N 5 increases with the thrust P 2 , P 3 of the feed rollers 2, 3. From these forces results in a resulting R, the size and direction of which depends on the forces mentioned.
  • the resistance of the sheet 8 to the folding decreases and the weight G of the sheet part between the folding rollers 2, 3 and the folding pocket 20 increases as the distance L increases. For this reason, folding machines typically have a possibility of displacing the pocket position. As the thickness and density of the paper increase, the distance L is increased to reduce the sheet resistance, but with thin and soft paper, the distance L is reduced so that the sheet does not sag and crumple but runs normally into the pocket. As the inclination angle ⁇ of the folding pocket 20 increases, the resistances on the pocket wall N 4 and the frictional force F 4 increase . Consequently, the conditions of sheet introduction deteriorate in the pocket and the value of the resultant R decreases.
  • the condition of the surface of the folding pocket 20 is very important, since it depends on the friction coefficient of the paper on the pocket and consequently also the value of the frictional force F 4 .
  • the inclination angle ⁇ of the folding pocket 20 is mathematically chosen so that on the one hand, the resistance during insertion of the sheet 8 in the folding pocket 20 is not too large and on the other hand, the distribution of forces F 4 , G, N 4 , N 5 , P 2 , P 3rd as cheap as possible.
  • the most common are inclination angles ⁇ of 30 ° to 45 °.
  • such Venturi 10 is located above the sheet 8, on the Falztaschenoberseite 7, and generates an air flow 31, which takes place substantially parallel to the sheet running direction.
  • a force F B is generated by the air flow 31 by friction with the sheet top, which drives the sheet 8 in the direction of the stopper 5.
  • the air flow 31 above the sheet 8 generates a pressure P o which is lower than the air pressure below the sheet P u .
  • This negative pressure above the arc P o creates a suction that pulls the sheet 8 in the direction of the Falztaschenoberseite 7.
  • the sheet 8 is also prevented by the air flow 31 at the same time to reach the Falztaschenoberseite 7. Accordingly, therefore, an air cushion between Falztaschenoberseite 7 and sheet 8, formed by the air flow 31.
  • the sheet 8 is no longer in contact with the Falztascheunterseite 4, so that the friction force F 4 is considerably reduced at this point.
  • a plurality of Venturi 10 along the leading edge of the Falztaschenoberseite 7 are arranged so that the air cushion acts uniformly over the sheet width.
  • FIG. 4 Such an arrangement of a plurality of blowing air nozzles 10 is in FIG. 4 shown.
  • the nozzle bar 11 consists of a plurality of nozzle bodies 12, which are arranged identical to one another next to each other and have a common Blas Kunststoffzu für 19, is blown through the air.
  • a semicircular nozzle chamber 14 is arranged in height to the outlet opening 16 back.
  • a connection with the Blas Kunststoffzu effet 19 is provided in the bottom of the nozzle chamber 14, a connection with the Blas Kunststoffzu effet 19 is provided.
  • the lid of the nozzle chamber 14 forms a separate plate 18 which is provided with suitable fastening means, for. As adhesive, is attached to the nozzle body 12. At the same time, the separate plate 18 also forms part of the outlet opening 16, through which an airflow 31 exits.
  • such a nozzle bar 11 is inserted into each folding pocket 20 of a folding machine.
  • B. only equip the first folding pocket with such a blower 10.

Landscapes

  • Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
  • Air Bags (AREA)
  • Details Of Garments (AREA)
  • Sewing Machines And Sewing (AREA)

Claims (14)

  1. Dispositif de soufflage pour une poche de pliage (20) comportant au moins une buse de soufflage d'air (12, 14, 16, 18),
    caractérisé en ce que
    la buse de soufflage d'air au moins au nombre de une (12, 14, 16, 18) est réalisée de telle sorte qu'un jet d'air (31) s'étendant pour l'essentiel dans le sens d'entrée de la poche de pliage (20) peut être ainsi produit, et en ce que la buse de soufflage d'air au moins au nombre de une (12, 14, 16, 18) est disposée dans le côté supérieur de la poche de pliage (7).
  2. Dispositif de soufflage selon la revendication 1,
    caractérisé en ce que
    la buse de soufflage d'air (12, 14, 16, 18) est réalisée de telle sorte que le jet d'air (31) circule pour l'essentiel parallèlement au sens de déplacement d'une feuille insérée (8).
  3. Dispositif de soufflage selon l'une quelconque des revendications 1 à 2,
    caractérisé en ce que
    la buse de soufflage d'air (12, 14, 16, 18) est une buse venturi (12, 14, 16, 18).
  4. Dispositif de soufflage selon l'une quelconque des revendications 1 à 3,
    caractérisé en ce que
    la buse de soufflage d'air (12, 14, 16, 18) présente un corps de buse (12), le corps de buse (12) comprenant une conduite de soufflage d'air (19) par laquelle l'air soufflé passe dans une chambre de soufflage (14) pour sortir par une ouverture de sortie en forme de fente (16).
  5. Dispositif de soufflage selon la revendication 4,
    caractérisé en ce que
    la chambre de soufflage (14) est réalisée pour l'essentiel en forme de demi-cercle.
  6. Dispositif de soufflage selon l'une quelconque des revendications 4 à 5,
    caractérisé en ce que
    la chambre de soufflage (14) est formée en partie par le corps de buse (12) et en partie par une plaque séparée (18), la plaque séparée (18) étant fixée, notamment collée, au niveau du corps de buse (12).
  7. Dispositif de soufflage selon la revendication 6,
    caractérisé en ce que
    l'ouverture de sortie en forme de fente (18) est en partie formée par le corps de buse (12) et en partie par la plaque séparée (18).
  8. Dispositif de soufflage selon l'une quelconque des revendications 4 à 7,
    caractérisé en ce que
    le dispositif de soufflage (10) présente une rampe de buses (11), la rampe de buses (11) comprenant une pluralité de corps de buse (12).
  9. Dispositif de soufflage selon la revendication 8,
    caractérisé en ce que
    la rampe de buses (11) est modelée d'un seul tenant.
  10. Dispositif de soufflage selon l'une quelconque des revendications 1 à 9,
    caractérisé en ce
    qu'un dispositif d'ionisation de l'air soufflé (31) est relié au dispositif de soufflage (10).
  11. Dispositif de soufflage selon l'une quelconque des revendications 1 à 10,
    caractérisé en ce
    qu'une pluralité de buses de soufflage d'air (12, 14, 16, 18) sont disposées transversalement par rapport au sens d'entrée le long d'une poche de pliage (20)
  12. Procédé de support de feuilles insérées (8) dans une poche de pliage (20) comportant les étapes suivantes consistant à :
    - réaliser un dispositif de soufflage (10) disposé dans un côté supérieur de la poche de pliage avec une buse de soufflage d'air dans la zone d'entrée d'une poche de pliage (20)
    - produire un jet d'air (31) pour l'essentiel parallèlement au sens d'entrée de la feuille (8) dans la poche de pliage (20).
  13. Poche de pliage (20) comportant un dispositif de soufflage (10) selon l'une quelconque des revendications 1 à 11.
  14. Plieuse comportant une poche de pliage (20) selon la revendication 13.
EP05101033A 2004-03-16 2005-02-11 Dispositif de soufflage pour une poche de pliage Expired - Lifetime EP1577244B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004012692 2004-03-16
DE102004012692A DE102004012692A1 (de) 2004-03-16 2004-03-16 Blasvorrichtung für eine Falztasche

Publications (2)

Publication Number Publication Date
EP1577244A1 EP1577244A1 (fr) 2005-09-21
EP1577244B1 true EP1577244B1 (fr) 2008-04-30

Family

ID=34833127

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05101033A Expired - Lifetime EP1577244B1 (fr) 2004-03-16 2005-02-11 Dispositif de soufflage pour une poche de pliage

Country Status (4)

Country Link
EP (1) EP1577244B1 (fr)
AT (1) ATE393751T1 (fr)
DE (2) DE102004012692A1 (fr)
PT (1) PT1577244E (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2517995A1 (fr) 2011-04-28 2012-10-31 Heidelberger Druckmaschinen AG Plieuse avec dispositif de transport
EP3118147A1 (fr) 2015-07-16 2017-01-18 Heidelberger Druckmaschinen AG Plieuse a poches et plieuse comprenant une telle plieuse a poches
DE102015213336A1 (de) 2015-07-16 2017-01-19 Heidelberger Druckmaschinen Ag Taschenfalzwerk und Bogenfalzmaschine mit einem solchen Taschenfalzwerk

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102024137989B3 (de) * 2024-12-16 2025-12-31 Heidelberger Druckmaschinen Aktiengesellschaft Verfahren zum Falzen von Bogen aus faserbasiertem Material in einer Falzmaschine

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB512869A (en) * 1937-03-24 1939-09-27 Ludolf Colditz Improvements in and relating to buckle folding machines
DE1186473B (de) * 1962-02-24 1965-02-04 Planeta Veb Druckmasch Werke Bogenanlege-Vorrichtung
DE7029693U (de) * 1970-08-07 1971-04-29 Erwin Schmidt Maschinenfabrik Vorrichtung zum falzen von bogen, folien od. dgl. im fenster-. altar- oder zentralfalz.
NL7701431A (nl) * 1976-03-08 1977-09-12 Xerox Corp Werkwijze voor het omkeren van de bewegings- richting van een blad.
DE2921008A1 (de) * 1979-05-23 1980-11-27 Siemens Ag Einrichtung fuer den nahezu reibungsfreien transport von losem blattfoermigen material
DE8906505U1 (de) * 1989-05-26 1989-08-03 Stahl Gmbh & Co Maschinenfabrik, 7140 Ludwigsburg Blasvorrichtung zur Unterstützung für den einlaufenden Bogen in einer Falztasche
JP2948465B2 (ja) * 1994-01-14 1999-09-13 三田工業株式会社 用紙送り装置
DE29615295U1 (de) * 1996-09-03 1996-10-24 Heidelberger Druckmaschinen Ag, 69115 Heidelberg Vorrichtung zur berührungslosen Bogenführung in einer Bogendruckmaschine
DE10042888A1 (de) * 2000-08-31 2002-03-14 Heidelberger Druckmasch Ag Bogenleiteinrichtung
DE10157082A1 (de) * 2001-11-21 2003-05-28 Hans Schwerdter Zusatzeinrichtung für einen Bogenanlagetisch

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2517995A1 (fr) 2011-04-28 2012-10-31 Heidelberger Druckmaschinen AG Plieuse avec dispositif de transport
DE102011018859A1 (de) 2011-04-28 2012-10-31 Heidelberger Druckmaschinen Aktiengesellschaft Falzmaschine mit Transportvorrichtung
EP3118147A1 (fr) 2015-07-16 2017-01-18 Heidelberger Druckmaschinen AG Plieuse a poches et plieuse comprenant une telle plieuse a poches
DE102015213336A1 (de) 2015-07-16 2017-01-19 Heidelberger Druckmaschinen Ag Taschenfalzwerk und Bogenfalzmaschine mit einem solchen Taschenfalzwerk
DE102015213334A1 (de) 2015-07-16 2017-01-19 Heidelberger Druckmaschinen Ag Taschenfalzwerk und Bogenfalzmaschine mit einem solchen Taschenfalzwerk

Also Published As

Publication number Publication date
DE102004012692A1 (de) 2005-10-06
DE502005003887D1 (de) 2008-06-12
EP1577244A1 (fr) 2005-09-21
PT1577244E (pt) 2008-08-07
ATE393751T1 (de) 2008-05-15

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