EP0526391B1 - Dispositif d'enfilage de bandes dans une rotative d'impression - Google Patents

Dispositif d'enfilage de bandes dans une rotative d'impression Download PDF

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Publication number
EP0526391B1
EP0526391B1 EP19920810494 EP92810494A EP0526391B1 EP 0526391 B1 EP0526391 B1 EP 0526391B1 EP 19920810494 EP19920810494 EP 19920810494 EP 92810494 A EP92810494 A EP 92810494A EP 0526391 B1 EP0526391 B1 EP 0526391B1
Authority
EP
European Patent Office
Prior art keywords
link
coupling rod
links
guide rail
guide
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
EP19920810494
Other languages
German (de)
English (en)
Other versions
EP0526391A1 (fr
Inventor
Andreas Zahnd
Johann Imwinkelried
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.)
Wifag Maschinenfabrik AG
Original Assignee
Wifag Maschinenfabrik 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 Wifag Maschinenfabrik AG filed Critical Wifag Maschinenfabrik AG
Publication of EP0526391A1 publication Critical patent/EP0526391A1/fr
Application granted granted Critical
Publication of EP0526391B1 publication Critical patent/EP0526391B1/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
    • B41F13/00—Common details of rotary presses or machines
    • B41F13/02—Conveying or guiding webs through presses or machines
    • B41F13/03—Threading webs into printing machines

Definitions

  • the invention relates to a device for drawing material webs in rotary printing presses by means of a drawing element of finite length provided with a drive, according to the preamble of patent claim 1.
  • DE-A 35 41 588 shows a driven retraction element which consists of articulated individual members.
  • the individual joints between the individual links can be blocked by a locking mechanism in order to overcome these guide-free route sections.
  • the area of the retraction element stiffened in this way then continues in a straight line until it runs onto the guide rail again. The locking of the joints is then released again.
  • This retraction element is designed so that deflection can only take place in one plane. This plane is perpendicular to the printing unit roller axes. For this reason, it is not possible to automatically guide a material web to be fed into the printing press also via turning bars or via so-called bay windows. The retraction of the material web through turning bars and through bay windows must therefore be Hand done.
  • the object of the invention is to provide a retraction device for rotary printing presses which can also automatically retract the material web via turning bars and so-called bay windows, and with which disruptions during the retraction process can be avoided by jamming the retraction element.
  • the pull-in element 1 consists of a plurality of links 2, 3, 4 arranged one behind the other.
  • Each of the links 2, 3, 4 consists of a housing 5, 6, 7.
  • In each housing 5, 6, 7 are arranged on the side facing the guide rail 8 guide rollers 9, 10, which are freely rotatably mounted on corresponding axes 11, which are fastened in each housing 5, 6, 7.
  • Each of the guide rollers 9, 10 is assigned a corresponding guide roller on the invisible side of the guide rail 8 symmetrically to it, which thereby the interacting pairs of guide rollers Form 9, 10 for guiding the links 2, 3, 4 on the guide rail 8.
  • Each of the links 2, 3, 4 is connected to its adjacent link by a resilient connecting means so that the individual links can be deflected and twisted in all directions within the frame, as is necessary due to the predetermined path of the guide rails.
  • this connection is designed such that, seen in the direction of travel (arrow 12), a slit-shaped recess 13 is machined at the front and rear end of each housing 5, 6, 7, which is formed by two tabs 14 and 15 is limited.
  • Both tabs 14 and 15 are each provided with a bore into which a bolt 16 is inserted and held stationary.
  • Two links 2, 3 or 4 are thus articulatedly connected to one another by a coupling rod 18.
  • Both end openings 17 of the coupling rod 18 have a central region 19 which corresponds approximately to the diameter of the bolt 16, while the outer regions 20, 21 have a diameter which increases in size towards the outside.
  • the coupling rod 18 is cuboidal, which creates a defined support on the inside of the bracket 15 .
  • the entire retraction element 1 has the tendency to align itself in the plane which is perpendicular to the pressure roller axes.
  • the pull-in element 1 can also follow a curvature of the guide rail 8 which leads away from the plane which is perpendicular to the pressure roller axes.
  • the slot-shaped recess 13 has a width b which corresponds to at least twice the height h of the coupling rod 18.
  • the spring 22 is guided in a sleeve 23, the lower open edge of which serves as a stop for the coupling rod 18.
  • the resilient connecting means of two adjacent links consists of a spring bar.
  • the spring rod is provided at both ends with a holder fixed thereon, which is fastened in the slot-shaped recess 13, which is formed by the two tabs 14 and 15, of the links 2, 3, 4 in a known manner.
  • the spring bar has a circular cross section, which optimally ensures the desired deflections and twists.
  • the link 2 is designed to drive the pull-in element 1.
  • an electric motor 24 and 25 is accommodated in the housing 5 on both sides of the guide rail 8.
  • a gear 26 or 27 is coupled to each electric motor 24 and 25, from which a drive shaft 28 or 29 projects into the region of the guide rail 8.
  • a wheel 31 provided with ribs 30 is rotatably attached.
  • the arrangement of the electric motors 24 and 25 in Housing 5 is selected so that the corresponding wheel 31 comes to rest between the guide rollers 9 and 10 (FIG. 1).
  • the guide rail 8 has on its upper area a continuous longitudinal groove 32 in both sides, in which a correspondingly shaped part 33 of the guide roller 9 or 10 engages.
  • bristle tufts 34 are embedded on both sides in the guide rails 8 transversely thereto.
  • the ribs 30 of the wheel 34 engage in these bristle tufts 34, thereby ensuring a quasi-positive force transmission between the drive and the guide rail 8 which has an elastic behavior due to the resilient bendability of the bristle tufts 34.
  • the guide rollers 9, 10 have an incision 35 in the region of the bristle tufts 34 of the guide rail 8, while the lowermost part 36 serves as a support against lateral tilting.
  • the guide rail 8 is fastened in a known manner in the frame of the printing press.
  • the link 3 shows a sectional view through the link 3 of the pull-in element 1.
  • the link 3 supplies the electric motors of the pull-in element 1 with energy.
  • a current collector 37 is arranged centrally in the housing 6, as can also be seen from FIG. 1, which is pressed by a spring 38 against the current-carrying sliding part 39, which is arranged on the end face along the guide rail 8.
  • the link 3 has identical guide rollers 9 and 10 as the link 2 of the pull-in element 1.
  • a diode 40 or 41 is attached on both sides of the housing 6. The operation of the power supply and the circuit will be described later.
  • Fig. 4 shows a sectional view through the link 4 of the retracting element 1.
  • This link 4 is for Recording of the tape to which the beginning of the material web to be drawn in can be attached.
  • a pin 43 is rotatably held centrally in the housing 7 of the link 4.
  • the part 44 of the pin 43 protruding from the housing 7 has a surface 45 on which the band 42 is held by means of screw 46.
  • This link 4 is also equipped with guide rollers 9, 10 which are in engagement with the guide rail 8.
  • FIG. 5 shows a plan view of a part of the links 2, 3, 4 of the pull-in element 1, according to FIG. 1.
  • the left half shows the view with the cover removed, while the right half with the cover screwed on Cover 47 is shown.
  • the representation of the link 2 shows the symmetrically arranged electric motors 24 and 25.
  • Link 3 shows the centrally arranged current collector 37 and the diodes 40 and 41 attached symmetrically to the guide rail 8 on the housing 6.
  • the fastening of the band 42 to the part 44 of the pin 43 is shown again.
  • the individual links 2, 3, 4 are mutually articulated via the coupling rods 18.
  • FIG. 6 The arrangement of the individual links 2, 3 and 4, which together form the pull-in element 1, is shown in FIG. 6.
  • seven such groups 48 are coupled to one another.
  • the link 4, equipped with a hitching device for the material web to be drawn in, is inserted, after which another four groups 48 are coupled are.
  • the power supply to the pull-in element 1 takes place via sliding parts 39 inserted in the guide rail 8.
  • the arrangement of these sliding parts 39 is shown in FIG. 9.
  • the positive current conductor 50 and the negative current conductor 51 are accommodated in the foot part of the guide rail 8.
  • the sliding parts 39 which each extend only over a certain length in the guide rail 8, preferably 30 cm to 50 cm, are alternately connected to the positive current conductor 50 and the negative current conductor 51.
  • the two current conductors 50 and 51 are connected to a supply device, not shown, for direct current with a voltage of 12 volts.
  • the sliding parts 39 are at a mutual distance a, which is greater than the dimension of the pantograph 37 in the direction of travel, thereby preventing the circuit from being short-circuited.
  • Fig. 7 the arrangement of the circuit is shown, as it is carried out in each link 3, equipped with current collector 37.
  • the current collector 37 passes through sliding parts 39 alternately connected to the positive current conductor 50 or to the negative current conductor 51 while the material web is being drawn in.
  • the connection connections 60 and 61 each have a diode 40 or 41 interposed, which are alternately blocked or transparent. If the current collector 37 is in contact with a negative sliding part 39, the diode 40 is permeable, the passage of the diode 41 is blocked. When the current collector 37 is in contact with a positive sliding part 39, the diode 41 is permeable, the passage of the diode 40 is blocked.
  • the two electric motors 24 and 25 are connected in parallel.
  • the polarity of the connections 57 and 59 is always positive, the polarity of the connections 56 and 58 is always negative.
  • the electric motors 24 and 25 are connected in such a way that they have an opposite direction of rotation.
  • the current connection to the adjacent link 3 (FIG. 7) is made via two electrical lines, one of which connects the connections 55 and 57, while the other connects the connections 54 and 56.
  • All members 2 and 3 of the retracting element 1 are electrically connected to one another in this way. This means that all drive motors 24, 25 of the links 2 and all current collectors 37 of the links 3 of the pull-in element are electrically connected to one another and are connected in parallel. Since the length of the sliding parts 39 on the guide rail 8 is selected such that a number of the current collectors 37 of the pull-in element 1 always runs on positive sliding parts 39 and a number of current collectors 37 of the pull-in element 1 run on negative sliding parts 39, this ensures that the circuit is permanently closed.
  • FIGS. 10 to 12 Another embodiment variant of the drive, as shown in FIGS. 10 to 12, consists in that in the link 2, which is equipped with electric motors 24 and 25, the guide rollers 9, 10 instead of an incision 35 (FIG. 2) in this area are equipped with ribs 70 which correspond to the ribs 30 of the wheel 31 (FIG. 2).
  • the guide rollers 9, 10 equipped with ribs 70 are driven by the electric motors 24 and 25 via gear drives 71, 72.
  • the ribs 70 engage in the bristle tufts 34 of the guide rail 8 and move the retraction element 1 continues on the guide rails 8.
  • the guide rollers 9, 10 of the link 2 which is equipped with electric motors 24 and 25, are equipped with friction linings.
  • the guide rollers 9 and 10 are driven in the same way as in the embodiment variant according to FIGS. 10 to 12, namely via gear transmissions 71, 72.
  • the friction linings consist of a caterpillar-shaped band 73, which each has two guide rollers 9 arranged on one side of the guide rail 8 , 10 wraps around.
  • the caterpillar-shaped band 73 is pressed by the guide rollers 9, 10 against the guide rail 8, which in this case manages without tufts of bristles.
  • the caterpillar tapes 73 are easily replaceable when they are badly worn.
  • the guide rail network is equipped with known switches, crossings, and the like, not shown, the position of which can be remote-controlled.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Replacement Of Web Rolls (AREA)

Claims (6)

  1. Dispositif pour enfiler des bandes de matière dans des machines rotatives d'impression au moyen d'un appareil d'enfilage de longueur finie comportant un mécanisme moteur, cet appareil étant constitué de plusieurs éléments (2,3,4) reliés l'un à l'autre par des attelages articulés, et pourvus chacun de galets de guidage (9,10) disposés de chaque côté d'un rail de guidage (8), en regard l'un de l'autre, ces galets étant engagés dans une rainure longitudinale (32) du rail de guidage (8) pour assurer le mouvement d'avance de l'appareil d'enfilage (1) le long du rail de guidage (8), celui-ci étant fixé au bâti de la machine rotative d'impression en dehors de la zone des rouleaux, et comportant des embranchements pour permettre d'établir à l'avance le trajet de l'appareil d'enfilage dans la machine, caractérisé par les particularités suivantes :
    a) chaque élément (2,3,4) de l'appareil comporte au moins une paire de galets de guidage (9,10) ;
    b) les éléments (2,3,4) sont reliés l'un à l'autre par une biellette d'accouplement (18) ;
    c) chaque biellette d'accouplement (18) présente à chacune de ses deux extrémités un trou (17) dans lequel passe un axe d'articulation (16) fixé à deux pattes (14,15) de chaque élément (2,3,4) ;
    d) les deux pattes de fixation (14,15) constituent les bordures d'un évidement en forme de fente (13) prévus des deux côtés de chaque élément (2,3,4) pour recevoir une extrémité d'une biellette d'accouplement (18), cet évidement en forme de fente (18) présentant une largeur (b) qui est au moins égale au double de la cote de hauteur (h) de la biellette d'accouplement (18) ;
    e)les trous (17) prévus aux deux extrémités de chaque biellette d'accouplement présentent chacun à mi-hauteur une zone médiane (19) dont le diamètre correspond sensiblement à celui de l'axe d'articulation (16), tandis que le diamètre de chacune des deux zones extérieures (20, 21) du trou va en augmentant vers l'extérieur.
  2. Dispositif selon la revendication 1, caractérisé en ce que la biellette d'accouplement (18) est maintenue dans une position déterminée par rapport à l'axe d'articulation (16) par des organes élastiques (22).
  3. Dispositif selon la revendication 2, caractérisé en ce que les organes élastiques (22) sont constitués chacun par un ressort (22) monté sur l'axe d'articulation (16) et ayant une extrémité en appui sur la face interne plane de l'une des bordures (14) de l'évidement en forme de fente, l'autre extrémité du ressort étant en appui sur la biellette d'accouplement (18) pour appliquer une face opposée de celle-ci sur la face interne plane de l'autre bordure (15) de l'évidement.
  4. Dispositif selon la revendication 3, caractérisé en ce que le ressort (22) est entouré par une douille (23), du côté de son extrémité opposée à la biellette d'accouplement (18), afin de limiter le débattement angulaire de la biellette d'accouplement (18) dans le plan défini par les axes d'articulation (16).
  5. Dispositif selon l'une des revendications 1 à 4, caractérisé en ce que sont prévus un premier élément(2) pour l'entraînement, un deuxième élément (3) pour l'arrivée du courant, et un troisième élément (4) pour recevoir la bande de matière à enfiler dans la machine.
  6. Dispositif selon la revendication 5, caractérisé en ce que deux premiers éléments (2) et un deuxième élément (3), disposé entre ceux-ci, couplés en un premier groupe (48) d'éléments, formé par deux lignes, constituent un groupe (48), et que plusieurs groupes (48) couplés entre eux constituent l'appareil d'entraînement (1), avec le troisième élément (4).
EP19920810494 1991-07-04 1992-06-26 Dispositif d'enfilage de bandes dans une rotative d'impression Expired - Lifetime EP0526391B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4122192 1991-07-04
DE19914122192 DE4122192C2 (de) 1991-07-04 1991-07-04 Vorrichtung zum Einziehen von Materialbahnen in Rotationsdruckmaschinen

Publications (2)

Publication Number Publication Date
EP0526391A1 EP0526391A1 (fr) 1993-02-03
EP0526391B1 true EP0526391B1 (fr) 1995-05-24

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ID=6435453

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Application Number Title Priority Date Filing Date
EP19920810494 Expired - Lifetime EP0526391B1 (fr) 1991-07-04 1992-06-26 Dispositif d'enfilage de bandes dans une rotative d'impression

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EP (1) EP0526391B1 (fr)
DE (2) DE4122192C2 (fr)
DK (1) DK0526391T3 (fr)
FI (1) FI104060B (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5996873A (en) * 1998-05-11 1999-12-07 Heidelberger Druckmaschinen Ag Device for threading a web of material through a rotary printing press
FI114995B (fi) * 2002-04-30 2005-02-15 Metso Paper Inc Menetelmä ja laitteisto paperirainan pään viemiseksi paperin jälkikäsittelykoneessa

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH666860A5 (de) * 1984-12-18 1988-08-31 Wifag Maschf Vorrichtung zum einziehen von materialbahnen in rotationsdruckmaschinen.
DD263262A1 (de) * 1987-08-10 1988-12-28 Polygraph Leipzig Vorrichtung zum einziehen von materialbahnen in rotationsdruckmaschinen

Also Published As

Publication number Publication date
FI104060B1 (fi) 1999-11-15
DE4122192C2 (de) 1994-12-22
DE59202312D1 (de) 1995-06-29
FI923082A (fi) 1993-01-05
EP0526391A1 (fr) 1993-02-03
DE4122192A1 (de) 1993-01-14
DK0526391T3 (da) 1995-07-31
FI104060B (fi) 1999-11-15
FI923082A0 (fi) 1992-07-03

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