EP1500505A1 - Method for tightening a sleeve blanket on a mandrel - Google Patents

Method for tightening a sleeve blanket on a mandrel Download PDF

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Publication number
EP1500505A1
EP1500505A1 EP03405560A EP03405560A EP1500505A1 EP 1500505 A1 EP1500505 A1 EP 1500505A1 EP 03405560 A EP03405560 A EP 03405560A EP 03405560 A EP03405560 A EP 03405560A EP 1500505 A1 EP1500505 A1 EP 1500505A1
Authority
EP
European Patent Office
Prior art keywords
ring
mandrel
snap
intermediate ring
split
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
EP03405560A
Other languages
German (de)
French (fr)
Other versions
EP1500505B1 (en
Inventor
Georg Strasser
Edouard Borel
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.)
Bobst Mex SA
Original Assignee
Bobst SA
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 Bobst SA filed Critical Bobst SA
Priority to ES03405560T priority Critical patent/ES2269956T3/en
Priority to DE60307261T priority patent/DE60307261T2/en
Priority to EP03405560A priority patent/EP1500505B1/en
Priority to AT03405560T priority patent/ATE334821T1/en
Publication of EP1500505A1 publication Critical patent/EP1500505A1/en
Application granted granted Critical
Publication of EP1500505B1 publication Critical patent/EP1500505B1/en
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
    • B41N—PRINTING PLATES OR FOILS; MATERIALS FOR SURFACES USED IN PRINTING MACHINES FOR PRINTING, INKING, DAMPING, OR THE LIKE; PREPARING SUCH SURFACES FOR USE AND CONSERVING THEM
    • B41N6/00—Mounting boards; Sleeves Make-ready devices, e.g. underlays, overlays; Attaching by chemical means, e.g. vulcanising
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F27/00—Devices for attaching printing elements or formes to supports
    • B41F27/10—Devices for attaching printing elements or formes to supports for attaching non-deformable curved printing formes to forme cylinders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41N—PRINTING PLATES OR FOILS; MATERIALS FOR SURFACES USED IN PRINTING MACHINES FOR PRINTING, INKING, DAMPING, OR THE LIKE; PREPARING SUCH SURFACES FOR USE AND CONSERVING THEM
    • B41N10/00—Blankets or like coverings; Coverings for wipers for intaglio printing

Definitions

  • the present invention relates to a method of clamping a snap-ring on a mandrel of a rotary press, intended to be connected to heating means for bringing the ring-cliché at its working temperature.
  • Fixing clichés working hot, heated by heat transfer from the chuck of a press rotating on which the pictures are fixed poses problems relatively complex to solve and whose solutions known have various disadvantages.
  • Fixing clichés by screws poses the problem of fixing the screws in the wall of the mandrel, the latter being heated by a oil circulation, so that the holes receiving the screws must not pass through the wall of the chuck. Furthermore, it This is a time-consuming operation. To avoid the problem related to this method of fixation, it has already been proposed to surround the mandrel of a honeycomb structure in which snapshots can easily be fixed in the desired position.
  • the object of the present invention is to remedy the less in part to the disadvantages of the aforementioned solutions.
  • this invention relates to a method of tightening a ring-plate on a mandrel of a rotary press, equipped with heating means to bring the snap-ring at its working temperature, according to claim 1.
  • the advantages of this invention reside essentially in the fact that by a very simple process, it facilitates the mounting of the pictures on the mandrel, their fixation being carried out automatically during heating and ensures also an optimum heat transfer between the mandrel and clichés during the operation of the rotary press.
  • FIG. 1 shows a hollow mandrel 1 of a press rotating, inside which a heating liquid, provided by a heating circuit (not shown) to which the chuck 1 is intended to be connected, is called to circulate to heat it.
  • the snapshot intended to be fixed on the chuck is in the form of a ring 2.
  • This snap-ring 2 and mandrel 1 we have a ring split intermediate 3.
  • games 4 and 5 are arranged between the mandrel 1 and the split intermediate ring 3 of a part, and between the split intermediate ring 3 and the snap-ring 2, on the other hand. Since the intermediate ring 3 is split, we could have only one game between the latter and the cliché-cliché 2. In reality, the total clearance between mandrel 1 and snap ring 2 is the order of a few hundredths of a millimeter. This game depends materials used for the three elements, mandrel 1, split intermediate ring 3 and snap ring 2, as well as the diameter of the mandrel 1, which can typically be vary between 127 mm and 254 mm.
  • the chuck 1 is made of steel, the cliché ring 2 is in brass and the split intermediate ring 3 is aluminum. Since the coefficient of expansion of aluminum is greater than that of steel and that of brass, the the clearances between the mandrel 1 and the split intermediate ring 3 and that between the latter and the ring-plate 2 disappears and causes clamping of the snap-ring 2 on the mandrel 1.
  • mandrel 1 had a diameter 140 mm, the intermediate ring split 3 a diameter external of 156 mm and the ring-plate 2 an external diameter 190 mm. The total play between them was between 3 and 5 hundredths of a millimeter. This game disappeared for a temperature mandrel 1 of 150 ° C, so that one obtains a perfect blocking of the snap-ring 2 on the mandrel 1 at the working temperature around 200 ° C. slot provided on the split intermediate ring 3 serves to absorb the circular expansion of this intermediate ring during heating of mandrel 1.
  • the play (s) between the mandrel 1, the snap-ring 2 on the one hand and the intermediate ring slotted 3 on the other hand must or must be lower unlike expansion between this intermediate ring 3 and the other two parts, to allow the differential of dilation of this intermediate ring to remove this or these games and to ensure the blocking of the ring-shot 2 on the mandrel 1.

Landscapes

  • Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
  • Automatic Assembly (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Moulding By Coating Moulds (AREA)
  • Printing Plates And Materials Therefor (AREA)
  • Gripping On Spindles (AREA)
  • Clamps And Clips (AREA)

Abstract

The method involves placing an intermediate split ring (3) between a mandrel (1) and a ring-plate (2). The intermediate split ring is made up of aluminum having an expansion coefficient greater than a coefficient of brass. The ring-plate and mandrel is made up of brass to cause the blocking of the ring-plate on the mandrel at an operating temperature of the ring-plate.

Description

La présente invention se rapporte à un procédé de serrage d'un anneau-cliché sur un mandrin d'une presse rotative, destiné à être relié à de moyens de chauffage pour amener l'anneau-cliché à sa température de travail.The present invention relates to a method of clamping a snap-ring on a mandrel of a rotary press, intended to be connected to heating means for bringing the ring-cliché at its working temperature.

La fixation de clichés travaillant à chaud, chauffés par transfert thermique à partir du mandrin d'une presse rotative sur lequel les clichés sont fixés pose des problèmes relativement complexes à résoudre et dont les solutions connues présentent divers inconvénients. La fixation des clichés par des vis pose le problème de la fixation des vis dans la paroi du mandrin, celui-ci étant chauffé par une circulation d'huile, de sorte que les trous recevant les vis ne doivent pas traverser la paroi du mandrin. En outre, il s'agit d'une opération qui prend du temps. Pour éviter le problème lié à ce mode de fixation, on a déjà proposé d'entourer le mandrin d'une structure en nid d'abeilles dans laquelle les clichés peuvent facilement être fixés dans la position désirée.Fixing clichés working hot, heated by heat transfer from the chuck of a press rotating on which the pictures are fixed poses problems relatively complex to solve and whose solutions known have various disadvantages. Fixing clichés by screws poses the problem of fixing the screws in the wall of the mandrel, the latter being heated by a oil circulation, so that the holes receiving the screws must not pass through the wall of the chuck. Furthermore, it This is a time-consuming operation. To avoid the problem related to this method of fixation, it has already been proposed to surround the mandrel of a honeycomb structure in which snapshots can easily be fixed in the desired position.

Si cette dernière solution permet de supprimer les vis et de faciliter la fixation des clichés, en revanche il pénalise fortement le transfert thermique entre le mandrin chauffé et les clichés, dans la mesure où elle réduit fortement la surface d'échange thermique entre le mandrin et les clichés, ce qui constitue un inconvénient notable quant aux performances de la presse rotative.If this last solution allows to remove the screws and to facilitate the fixation of clichés, however strongly penalizes heat transfer between the mandrel heated and clichés, to the extent that it sharply reduces the heat exchange surface between the mandrel and the clichés, which is a significant disadvantage performance of the rotary press.

Le but de la présente invention est de remédier, au moins en partie aux inconvénients des solutions susmentionnées.The object of the present invention is to remedy the less in part to the disadvantages of the aforementioned solutions.

A cet effet, cette invention a pour objet un procédé de serrage d'un anneau-cliché sur un mandrin d'une presse rotative, muni de moyens de chauffage pour amener l'anneau-cliché à sa température de travail, selon la revendication 1.For this purpose, this invention relates to a method of tightening a ring-plate on a mandrel of a rotary press, equipped with heating means to bring the snap-ring at its working temperature, according to claim 1.

Les avantages de cette invention résident essentiellement dans le fait que par un procédé très simple, on facilite le montage des clichés sur le mandrin, leur fixation étant réalisée automatiquement lors du chauffage et on assure également un transfert thermique optimum entre le mandrin et les clichés lors du fonctionnement de la presse rotative.The advantages of this invention reside essentially in the fact that by a very simple process, it facilitates the mounting of the pictures on the mandrel, their fixation being carried out automatically during heating and ensures also an optimum heat transfer between the mandrel and clichés during the operation of the rotary press.

Les dessins annexés illustrent, très schématiquement et à titre d'exemple, une mise en oeuvre du procédé objet de la présente invention.

  • La figure 1 est une vue en coupe transversale de la mise en place d'un anneau-cliché sur un mandrin à température ambiante;
  • la figure 2 est une vue en coupe du même mandrin et du même anneau-cliché chauffés à la température de travail.
    • The accompanying drawings illustrate, very schematically and by way of example, an implementation of the method that is the subject of the present invention.
  • Figure 1 is a cross-sectional view of the establishment of a snap-ring on a mandrel at room temperature;
  • Figure 2 is a sectional view of the same mandrel and the same ring-plate heated to the working temperature.

    • La figure 1 représente un mandrin creux 1 d'une presse rotative, à l'intérieur duquel un liquide de chauffage, fourni par un circuit de chauffage (non représenté) auquel le mandrin 1 est destiné à être relié, est appelé à circuler pour le chauffer. Le cliché destiné à être fixé sur le mandrin se présente sous la forme d'un anneau 2. Entre cet anneau-cliché 2 et le mandrin 1 on dispose une bague intermédiaire fendue 3.FIG. 1 shows a hollow mandrel 1 of a press rotating, inside which a heating liquid, provided by a heating circuit (not shown) to which the chuck 1 is intended to be connected, is called to circulate to heat it. The snapshot intended to be fixed on the chuck is in the form of a ring 2. Between this snap-ring 2 and mandrel 1 we have a ring split intermediate 3.

    Comme on l'a représenté de manière très exagérée, uniquement dans un but didactique, des jeux 4 et 5 sont ménagés entre le mandrin 1 et la bague intermédiaire fendue 3 d'une part, et entre la bague intermédiaire fendue 3 et l'anneau-cliché 2, d'autre part. Etant donné que la bague intermédiaire 3 est fendue, on pourrait n'avoir qu'un jeu entre cette dernière et l'annneau-cliché 2. Dans la réalité, le jeu total entre le mandrin 1 et l'anneau-cliché 2 est de l'ordre de quelque centièmes de millimètres. Ce jeu dépend des matériaux utilisés pour les trois éléments, mandrin 1, bague intermédiaire fendue 3 et anneau-cliché 2, ainsi que du diamètre du mandrin 1, celui-ci pouvant typiquement varier entre 127 mm et 254 mm.As it has been represented in a very exaggerated way, only for didactic purposes, games 4 and 5 are arranged between the mandrel 1 and the split intermediate ring 3 of a part, and between the split intermediate ring 3 and the snap-ring 2, on the other hand. Since the intermediate ring 3 is split, we could have only one game between the latter and the cliché-cliché 2. In reality, the total clearance between mandrel 1 and snap ring 2 is the order of a few hundredths of a millimeter. This game depends materials used for the three elements, mandrel 1, split intermediate ring 3 and snap ring 2, as well as the diameter of the mandrel 1, which can typically be vary between 127 mm and 254 mm.

    Selon une forme de mise en oeuvre du procédé de fixation, le mandrin 1 est en acier, l'anneau-cliché 2 est en laiton et la bague intermédiaire fendue 3 est en aluminium. Etant donné que le coefficient de dilatation de l'aluminium est supérieur à celui de l'acier et à celui du laiton, le ou les jeux entre le mandrin 1 et la bague intermédiaire fendue 3 et celui entre cette dernière et l'anneau-cliché 2 disparait et provoque le serrage de l'anneau-cliché 2 sur le mandrin 1.According to one form of implementation of the fixing method, the chuck 1 is made of steel, the cliché ring 2 is in brass and the split intermediate ring 3 is aluminum. Since the coefficient of expansion of aluminum is greater than that of steel and that of brass, the the clearances between the mandrel 1 and the split intermediate ring 3 and that between the latter and the ring-plate 2 disappears and causes clamping of the snap-ring 2 on the mandrel 1.

    Dans un exemple particulier, le mandrin 1 avait un diamètre de 140 mm, la bague intermédiaire fendue 3 un diamètre externe de 156 mm et l'anneau-cliché 2 un diamètre externe de 190 mm. Le jeu total entre eux était compris entre 3 et 5 centièmes de millimètres. Ce jeu a disparu pour une température du mandrin 1 de 150° C, en sorte que l'on obtient un blocage parfait de l'anneau-cliché 2 sur le mandrin 1 à la température de travail qui se situe autour de 200° C. La fente ménagée sur la bague intermédiaire fendue 3 sert à absorber la dilatation circulaire de cette bague intermédiaire lors du chauffage du mandrin 1.In a particular example, mandrel 1 had a diameter 140 mm, the intermediate ring split 3 a diameter external of 156 mm and the ring-plate 2 an external diameter 190 mm. The total play between them was between 3 and 5 hundredths of a millimeter. This game disappeared for a temperature mandrel 1 of 150 ° C, so that one obtains a perfect blocking of the snap-ring 2 on the mandrel 1 at the working temperature around 200 ° C. slot provided on the split intermediate ring 3 serves to absorb the circular expansion of this intermediate ring during heating of mandrel 1.

    De façon générale, le ou les jeux ménagés entre le mandrin 1, l'anneau-cliché 2 d'une part et la bague intermédiaire fendue 3 d'autre part, doit ou doivent être inférieur à la différence de dilatation entre cette bague intermédiaire 3 et les deux autres pièces, pour permettre au différentiel de dilatation de cette bague intermédiaire de supprimer ce ou ces jeux et d'assurer le blocage de l'anneau-cliché 2 sur le mandrin 1. Generally, the play (s) between the mandrel 1, the snap-ring 2 on the one hand and the intermediate ring slotted 3 on the other hand, must or must be lower unlike expansion between this intermediate ring 3 and the other two parts, to allow the differential of dilation of this intermediate ring to remove this or these games and to ensure the blocking of the ring-shot 2 on the mandrel 1.

    Grâce à ce procédé de fixation, le montage des clichés sur le mandrin est extrêmement facile étant donné le ou les jeux existant entre les différents éléments de l'assemblage. Même si aucun jeu n'est ménagé entre le mandrin 1 et la bague intermédiaire fendue 3, le fait que cette bague intermédiaire soit fendue permet sa mise en place facile. Le serrage des trois éléments de l'assemblage assure en outre un transfert thermique optimal entre le mandrin 1 et les clichés solidaires des anneaux-clichés, ceci d'autant plus que la bague intermédiaire fendue 3 est en aluminium.Thanks to this method of fixing, the editing of photographs on the mandrel is extremely easy given the one or more existing games between the different elements of the assembly. Even if no play is provided between the mandrel 1 and the ring intermediate slotted 3, the fact that this intermediate ring is split allows easy installation. Clamping of the three elements of the assembly also ensures optimal heat transfer between chuck 1 and clichés solidarity of the rings-cliches, this especially as the split intermediate ring 3 is made of aluminum.

    Claims (3)

    Procédé de serrage d'un anneau-cliché sur un mandrin d'une presse rotative, destiné à être relié à de moyens de chauffage pour amener l'anneau-cliché à sa température de travail, caractérisé en ce qu'on interpose entre ce mandrin (1) et cet anneau-cliché (2) une bague intermédiaire fendue (3) en un matériau dont le coefficient de dilatation est supérieur à celui des matériaux dans lesquels sont réalisés ledit mandrin (1) et ledit anneau-cliché (2), pour provoquer le blocage de l'anneau-cliché (2) sur le mandrin (1) à la température de travail de cet anneau-cliché (2).A method of clamping a snap-ring on a mandrel of a rotary press, intended to be connected to heating means to bring the snap-ring to its working temperature, characterized in that is interposed between the mandrel (1) and this cliché ring (2) a split intermediate ring (3) of a material whose expansion coefficient is greater than that of the materials in which said mandrel (1) and said cliché ring (2) are made, to cause the locking ring (2) on the mandrel (1) to block at the working temperature of this snap ring (2). Procédé de serrage selon la revendication 1 selon lequel on réalise ledit mandrin (1), ladite bague intermédiaire fendue (3) et ledit anneau-cliché (2) en ménageant un jeu à température ambiante, inférieur à la dilatation thermique radiale différentielle entre le mandrin (1) et l'anneau-cliché (2), d'une part et la bague intermédiaire fendue, d'autre part.Clamping method according to claim 1 according to which said mandrel (1) is made, said intermediate ring slit (3) and said snap-ring (2) by play at room temperature, less than thermal expansion radial differential between the mandrel (1) and the snap-ring (2), on the one hand and the split intermediate ring, on the other hand. Procédé selon l'une des revendications précédentes, selon lequel on forme ledit mandrin (1) en acier, l'anneau-cliché (2) en laiton et la bague intermédiaire (3) en aluminium.Method according to one of the preceding claims, according to which said steel mandrel (1) is formed, the snap-ring (2) brass and the intermediate ring (3) aluminum.
    EP03405560A 2003-07-25 2003-07-25 Method for tightening a sleeve blanket on a mandrel Expired - Lifetime EP1500505B1 (en)

    Priority Applications (4)

    Application Number Priority Date Filing Date Title
    ES03405560T ES2269956T3 (en) 2003-07-25 2003-07-25 FIXING PROCEDURE OF A CLICK RING ON A MANDRILE.
    DE60307261T DE60307261T2 (en) 2003-07-25 2003-07-25 Method for attaching a blanket sleeve to a chuck
    EP03405560A EP1500505B1 (en) 2003-07-25 2003-07-25 Method for tightening a sleeve blanket on a mandrel
    AT03405560T ATE334821T1 (en) 2003-07-25 2003-07-25 METHOD FOR FASTENING A RUBBER CLOTH SLEEVE TO A CHUCK

    Applications Claiming Priority (1)

    Application Number Priority Date Filing Date Title
    EP03405560A EP1500505B1 (en) 2003-07-25 2003-07-25 Method for tightening a sleeve blanket on a mandrel

    Publications (2)

    Publication Number Publication Date
    EP1500505A1 true EP1500505A1 (en) 2005-01-26
    EP1500505B1 EP1500505B1 (en) 2006-08-02

    Family

    ID=33484085

    Family Applications (1)

    Application Number Title Priority Date Filing Date
    EP03405560A Expired - Lifetime EP1500505B1 (en) 2003-07-25 2003-07-25 Method for tightening a sleeve blanket on a mandrel

    Country Status (4)

    Country Link
    EP (1) EP1500505B1 (en)
    AT (1) ATE334821T1 (en)
    DE (1) DE60307261T2 (en)
    ES (1) ES2269956T3 (en)

    Citations (4)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    US6125753A (en) * 1997-05-28 2000-10-03 Rollin S.A. Sleeve for a printing machine cylinder and method of putting this sleeve in place
    US6389965B1 (en) * 1999-12-21 2002-05-21 Heidelberger Druckmaschinen Ag Tubular printing blanket with tubular isotropic reinforcing layer
    US20030031812A1 (en) * 1999-12-03 2003-02-13 Henri Bertoncini Sleeve comprising a layer for being fixed on a metal support roll
    EP1327522A1 (en) * 2002-01-15 2003-07-16 Xymid, LLC Bridge mandrel for use as a repeat builder in a printing machine

    Patent Citations (4)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    US6125753A (en) * 1997-05-28 2000-10-03 Rollin S.A. Sleeve for a printing machine cylinder and method of putting this sleeve in place
    US20030031812A1 (en) * 1999-12-03 2003-02-13 Henri Bertoncini Sleeve comprising a layer for being fixed on a metal support roll
    US6389965B1 (en) * 1999-12-21 2002-05-21 Heidelberger Druckmaschinen Ag Tubular printing blanket with tubular isotropic reinforcing layer
    EP1327522A1 (en) * 2002-01-15 2003-07-16 Xymid, LLC Bridge mandrel for use as a repeat builder in a printing machine

    Also Published As

    Publication number Publication date
    DE60307261D1 (en) 2006-09-14
    EP1500505B1 (en) 2006-08-02
    ATE334821T1 (en) 2006-08-15
    DE60307261T2 (en) 2007-07-26
    ES2269956T3 (en) 2007-04-01

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