EP0521828B1 - Mécanisme pour un dispositif d'enfilage dans une presse rotative - Google Patents

Mécanisme pour un dispositif d'enfilage dans une presse rotative Download PDF

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Publication number
EP0521828B1
EP0521828B1 EP19920810493 EP92810493A EP0521828B1 EP 0521828 B1 EP0521828 B1 EP 0521828B1 EP 19920810493 EP19920810493 EP 19920810493 EP 92810493 A EP92810493 A EP 92810493A EP 0521828 B1 EP0521828 B1 EP 0521828B1
Authority
EP
European Patent Office
Prior art keywords
guide
feed element
guide rail
link
links
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
EP19920810493
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German (de)
English (en)
Other versions
EP0521828A1 (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
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Filing date
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Publication of EP0521828A1 publication Critical patent/EP0521828A1/fr
Application granted granted Critical
Publication of EP0521828B1 publication Critical patent/EP0521828B1/fr
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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 drive for a device for pulling material webs in rotary printing presses through a pulling element of finite length, according to the preamble of patent claim 1.
  • DE-A-22 41 127 shows a driven retracting element which consists of a roller chain of finite length and which can be moved in guides which consist of hollow profiles.
  • the guides are firmly attached to the frame of the printing machine along the intended retraction paths. They have branches, switches, crossings and the like, with which the retraction path can be preset.
  • the roller chain is moved by means of drive devices fixed to the machine frame. This means that a large number of such drive devices must be provided over the entire pull-in path, since the distance between the individual drive devices must be smaller than the longitudinal dimension of the roller chain.
  • a motor vehicle equipped with an electric drive motor, travels along a rack guide, a gear wheel driven by the electric drive motor being in engagement with the rack.
  • This rack and pinion guide is also attached to the frame of the printing machine along the retraction paths and has switches, crossings and the like for presetting the retraction path.
  • the electricity fed via a power supply rail with which a pantograph, arranged on the motor vehicle is in contact.
  • the current feedback is probably via the rack guide.
  • the corresponding batteries are carried in an additional vehicle coupled to the motor vehicle.
  • This device has the disadvantage that only one motor vehicle is provided and a certain driving force is required that the dimensions of the motor vehicle become very large, so that a lot of space is required for the feeding system in the printing press, which in many cases is not already available and would have to be created additionally. Furthermore, there is a risk of the rack becoming dirty, which can lead to undesirable faults during the pulling-in process.
  • the object of the invention is to provide a drive for a device for pulling material web, which is arranged directly on the pull-in element, with which the required tensile force for pulling the material web into the rotary printing press can be easily applied, and that nevertheless Retractable element, seen in cross section, has very small dimensions. Furthermore, the power supply and the drive transmission should be designed so that faults due to contamination can be excluded.
  • the guide rail is provided on both sides in its head region with tufts of bristles arranged transversely to the direction of travel of the retracting element, into which the ribs of the wheels on the drive shaft the electric motors are attached.
  • each wheel has its own intervention adjustment so that the drive units located one behind the other and in pairs do not interfere with each other.
  • the tufts of bristles in which the wheels of the drive motors engage are practically self-cleaning. Each time the retracting element is passed through, the bristle tufts are bent by the ribs of the wheels and then spring back into the original position, as a result of which dirt particles hanging on the bristle tufts are thrown away.
  • 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 symmetrically associated with a corresponding guide roller on the invisible side of the guide rail 8, which thereby form the interacting pairs of guide rollers 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 . This gives the entire retraction element 1 the tendency to be in the plane that is perpendicular to the pressure roller axes. Due to the design of the openings 17 of the coupling rod 18, the coupling rod 18 permits a deflection movement with respect to the coupled links 2, 3 or 4. As a result, 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 the housing 5 is selected such 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 retraction element 1.
  • This link 4 is equipped to receive the tape to which the beginning of the web of material 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 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 transparent, the passage of the diode 40 is locked.
  • 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 tufts of bristles 34 of the guide rail 8 and move the pull-in element 1 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)
  • Advancing Webs (AREA)

Claims (8)

  1. Dispositif d'entraînement pour assurer l'enfilage de bandes de matière à introduire dans des machines rotatives d'imprimerie, en opérant au moyen d'un appareil d'enfilage de longueur finie pourvu d'un système d'entraînement électrique, cet appareil étant formé d'un certain nombre d'éléments reliés l'un à l'autre par des attelages articulés et pourvus de galets de guidage pour permettre le mouvement d'avance de l'appareil d'enfilage le long d'un rail de guidage qui est fixé au bâti de la machine rotative d'imprimerie en dehors de la zone des rouleaux, et qui comporte des embranchements permettant d'établir à l'avance le trajet d'enfilage, caractérisé par les particularités suivantes :
    - au moins deux éléments (2) de l'appareil d'enfilage (1) sont pourvus chacun d'au moins un moteur électrique d'entraînement (24,25) qui commande au moins un galet d'entraînement (31), ou entraîne en rotation les galets de guidage par l'intermédiaire d'un train d'engrenages,pour assurer le mouvement d'avance de l'appareil d'enfilage (1) sur le rail de guidage (8) ;
    - au moins deux autres éléments articulés (3) de l'appareil d'enfilage (1) sont pourvus d'un capteur de courant (37) disposé au centre de chaque élément et associé à un ressort d'appui, ce capteur de courant (37) étant maintenu en contact glissant sur des glissières conductrices de courant (39) qui sont prévues sur le rail de guidage (8);
    - les glissières (39), qui sont constituées par des profilés rectilignes rigides montés à la suite l'un de l'autre sur le rail de guidage (8) dans le sens de la longueur de celui-ci et avec un intervalle entre chaque profilé et le suivant, sont reliées alternativement, tantôt à un conducteur de courant positif (50), et tantôt à un conducteur de courant négatif (51) ;
    - tous les moteurs d'entraînement (24,25) des éléments articulés (2) et tous les capteurs de courant (37) des éléments articulés (3) de l'appareil d'enfilage sont reliés électriquement entre eux et branchés en parallèle ;
    - entre le conducteur de liaison (60) de polarité négative et le capteur de courant (37) de chaque élément concerné, est montée une diode (40) qui laisse passer le courant du capteur (37) lorsque celui-ci est au contact d'une glissière conductrice (39) alimentée en tension négative ;
    - entre le conducteur de liaison (61) de polarité positive et le capteur de courant (37) de chaque élément concerné, est montée une autre diode (41) qui laisse passer le courant du capteur (37) lorsque celui-ci est au contact d'une glissière conductrice (39) alimentée en tension positive.
  2. Dispositif selon la revendication 1, caractérisé en ce que le rail de guidage (8) est pourvu à sa partie supérieure de touffes de poils de brosse (34) disposées en rangées transversales par rapport à la direction du mouvement de l'appareil d'enfilage.
  3. Dispositif selon la revendication 2, caractérisé en ce que chaque moteur électrique d'entraînement (24, 25) porte sur son arbre de sortie (28) ou (29) un galet (31) pourvu de nervures (30) qui est en prise avec les touffes de poils de brosse (34) du rail de guidage (8).
  4. Dispositif selon la revendication 2, caractérisé en ce que les galets de guidage (9,10), dans leur partie en regard des touffes de poils de brosse (34), sont pourvus de nervures qui sont en prise avec les touffes de poils de brosse (34), et en ce que les galets de guidage (9,10) peuvent être entraînés en rotation par les moteurs électriques (24,25) par l'intermédiaire d'engrenages.
  5. Dispositif selon la revendication 1, caractérisé en ce que les galets d'entraînement (31) ou les galets de guidage (9,10) qui sont entraînés en rotation par les moteurs électriques (24,25) portent des garnitures de friction qui passent en roulant sur le rail de guidage (8) et assurent le mouvement d'avance de l'appareil d'enfilage (1) sur le rail de guidage (8).
  6. Dispositif selon la revendication 5, caractérisé en ce que la garniture de friction des galets de guidage (9,10) est confectionnée à partir d'une bande en forme de chenille (73) qui est entortillée autour de chacun des deux galets de guidage (9,10) disposés de chaque côté du rail de guidage (8).
  7. Dispositif selon l'une des revendications 1 à 6, caractérisé en ce qu'il comporte un appareil d'enfilage (1) formé de sept groupes (48) d'éléments reliés entre eux par des attelages articulés, puis un élément articulé (4) comportant un dispositif de fixation (43,44,45,46) pour une bande auxiliaire sur laquelle on peut accrocher la bande de matière à introduire dans la machine, et ensuite quatre autres groupes (48) d'éléments articulés, chaque groupe (48) comportant un premier élément (2) qui contient des moteurs d'entraînement (24,25), auquel est relié par un attelage articulé un élément (3) pourvu d'un capteur de courant (37), et ensuite un autre élément (2) à moteurs d'entraînement(24, 25), articulé sur l'élément (3).
  8. Dispositif selon l'une des revendications 1 à 7, caractérisé en ce que le rail conducteur (8) est confectionné dans un matériau non conducteur, en particulier en matière plastique.
EP19920810493 1991-07-04 1992-06-26 Mécanisme pour un dispositif d'enfilage dans une presse rotative Expired - Lifetime EP0521828B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4122228 1991-07-04
DE19914122228 DE4122228A1 (de) 1991-07-04 1991-07-04 Antrieb fuer eine vorrichtung zum einziehen von materialbahnen in rotationsdruckmaschinen

Publications (2)

Publication Number Publication Date
EP0521828A1 EP0521828A1 (fr) 1993-01-07
EP0521828B1 true EP0521828B1 (fr) 1995-05-24

Family

ID=6435474

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19920810493 Expired - Lifetime EP0521828B1 (fr) 1991-07-04 1992-06-26 Mécanisme pour un dispositif d'enfilage dans une presse rotative

Country Status (4)

Country Link
EP (1) EP0521828B1 (fr)
DE (2) DE4122228A1 (fr)
DK (1) DK0521828T3 (fr)
FI (1) FI103394B (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19621507C1 (de) * 1996-05-29 1997-09-18 Heidelberger Druckmasch Ag Bahneinzugsvorrichtung für eine bahnförmiges Material verarbeitende Maschine, insbesondere eine Rollenrotations-Druckmaschine
US5947361A (en) * 1996-07-25 1999-09-07 Emo Elektromotorenwerk Kamenz Gmbh Apparatus for transporting fabrics and web-shaped material with an electric drive device
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 (1)

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

Also Published As

Publication number Publication date
DK0521828T3 (da) 1995-07-31
FI103394B1 (fi) 1999-06-30
DE4122228A1 (de) 1993-01-21
EP0521828A1 (fr) 1993-01-07
FI923083A (fi) 1993-01-05
DE4122228C2 (fr) 1993-04-29
FI103394B (fi) 1999-06-30
DE59202305D1 (de) 1995-06-29
FI923083A0 (fi) 1992-07-03

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