EP0081443A1 - Preadjusting method for a dry offset machine - Google Patents

Preadjusting method for a dry offset machine Download PDF

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Publication number
EP0081443A1
EP0081443A1 EP82420171A EP82420171A EP0081443A1 EP 0081443 A1 EP0081443 A1 EP 0081443A1 EP 82420171 A EP82420171 A EP 82420171A EP 82420171 A EP82420171 A EP 82420171A EP 0081443 A1 EP0081443 A1 EP 0081443A1
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EP
European Patent Office
Prior art keywords
axes
blanket
template
axis
sector
Prior art date
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Granted
Application number
EP82420171A
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German (de)
French (fr)
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EP0081443B1 (en
Inventor
Gilbert Edelmann
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.)
Albea Tubes France SAS
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Cebal SAS
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Priority to AT82420171T priority Critical patent/ATE17681T1/en
Publication of EP0081443A1 publication Critical patent/EP0081443A1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F13/00—Common details of rotary presses or machines
    • B41F13/08—Cylinders
    • B41F13/10—Forme cylinders
    • B41F13/12—Registering devices
    • B41F13/16—Registering devices with means for displacing the printing formes on the cylinders
    • 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
    • B41F27/005—Attaching and registering printing formes to supports
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S101/00—Printing
    • Y10S101/36—Means for registering or alignment of print plates on print press structure

Definitions

  • the present invention relates to a method for presetting a dry offset machine intended for printing cylindrical or conical parts.
  • Many products are presented in cylindrical or conical containers, so for example in the field of cosmetics, aerosol tubes and jars are used. Glue tubes, yogurt jars and spray paints are other examples.
  • the decoration or the indications which appear on these containers are printed by means of dry offset machines. These machines are quite expensive, so it is advisable to use them almost continuously to amortize them. This is even more imperative when the printing is carried out by a machine integrated into a complete manufacturing line in which the parts are shaped, printed, dried, undergo a final machining and are even sometimes filled and packaged. In such production lines, any downtime represents a considerable loss.
  • the main characteristic of the already known solutions is that the precision of the machine adjustment is dependent on the precision with which the perforations have been made as well as the exact adjustment of the claws in the shape of the perforations. This precision is limited by the necessary characteristics of the material used to make the plates, as well as by the difficulty of producing claws which are both mobile and which however have no play. In practice, these systems are not used because they do not not give full satisfaction.
  • the adjustment of the machine shots is therefore carried out most of the time by trial and error, the duration of the operation then depending on the skill or the luck of the operator of the machine. For a four-color machine therefore having four sectors on which four plates are mounted, the setting time is approximately two hours. It is with the intention of reducing this adjustment time to approximately fifteen minutes that the present invention was made.
  • Fig. 3 does not show the image printed on the blanket as it actually appears, in fact, the templates being engraved in positive, they are "readable”, which has the consequence that the blanket is "illegible” since the image is reversed. In the drawing, this inversion has been deliberately ignored so that the reader finds the various elements in the same arrangement in all the figures.
  • the preset template is a thin plate, identical to those usually used in dry offset.
  • the template 1 is produced according to the same process as a working plate.
  • the various elements that appear on the template in the figures are first arranged on a lithorthochromatic film allowing copying on photopolymer plates, the plates then being immersed in a washing bath creating the relief.
  • Usual locating crosses 2 in photoengraving are placed on a film.
  • Two axes AA 'and BB' are added.
  • the axis AA ' is arranged parallel to the axis of rotation of the plate-holding sector on which the template will be fixed in a subsequent step.
  • the axis AA ' is located near the right hooking margin 3 of the template. Its position more or less close to said margin does not play a role.
  • the second axis BB ' is then arranged perpendicular to the axis AA' in the variant presented.
  • the direction of the axis BB ' is however not necessarily perpendicular to the axis AA', but it is preferable that the two axes form an angle between 80 and 100 ° between them.
  • the film carrying the locating crosses 2 and the axes AA 'and BB' constitutes a basic matrix.
  • the two right bars 9 and 11 are placed at a distance from the right edge 12 of the plate which varies according to the machine on which the plates will have to work. For a machine of the W1FAG type, the distance which separates the right edge 12 of the plate from the right edge 13 of the bars 9 and 11 is fixed at 40 mm.
  • the top 14 of the bar 9 is placed 25 mm from the top of the plate 15.
  • the base 16 of the bar 11 is located 25 mm from the bottom of the plate 17.
  • the two left bars 8 and 10 have the same dimensions as the two bars on the right. Their positioning on the photograph takes into account two factors. First rement, their position is determined by two perpendicular to the axis AA '. One of them is raised by the vertex 14 of the upper right bar 9. The vertex 18 of the bar 8 is aligned on this perpendicular. In the same way, the base 16 of the bar 11 and the base 19 of the bar 10 are aligned on the same perpendicular to the axis AA '.
  • the distance which separates the right side 13 of the two right bars 9 and 11 from the left side 20 of the two left bars 8 and 10 is determined by the development of the parts on which the printing will finally take place.
  • the usual diameters of the parts which are printed by means of plates of the format shown are 35, 40 and 45 mm.
  • the developments of these parts are therefore respectively 109.2 mm, 124.8 mm and 140.4 mm.
  • the distance is 124.8 mm and thus corresponds to a part 40 mm in diameter.
  • the number of templates that must be engraved depends on the number of color groups in the machine. For a dry offset press with four color groups, four templates are produced.
  • the first of these four templates includes all the elements described so far, namely the crossbeams 2, the positioning axes AA 'and BB' and the bars alignment 8, 9, 10 and 11 (fig. 2).
  • the other three templates are identical to each other, but only have crosses 2 and axes AA 'and BB' (fig. 1).
  • four perforations are made on each of them.
  • the four perforations are positioned in the same way and in the same places on each template. We practice, centered on the axis AA ', two perforations 4 and with a diameter of the order of 5 to 10 mm, one of the perforations 4 made in the top of the plate, the other 6 in the bottom.
  • perforations are circular in the drawing, but other shapes are also envisaged, in particular oblong, square or triangular.
  • Two other perforations are then made on the axis BB ', one 5 on the right of the template and centered both on the axis BB' and on the axis AA '.
  • This perforation is also provided away from the axis AA ′, but the variant shown in FIGS. 1 and 2 makes it possible subsequently to have a third reference 5 which is added to the two perforations 4 and 6 of the axis AA 'already described.
  • a second perforation 7 is made on the axis BB ', but on the left of the template this time.
  • the four templates are then bent to a curvature barely more open than that of the sectors on which the templates will be mounted. Once the templates are perforated and bent, they are machine mounted. Machine presetting can then be carried out.
  • the presetting begins with the positioning of the master template on the first color group of the machine.
  • the master jig 100 is the one which has the alignment bars 8, 9, 10 and 11 in addition to the crosses 2 and the axes AA 'and BB'.
  • the master template is fixed on the sector corresponding to the first group.
  • a test piece 21 is then placed on the workpiece mandrel 22 (fig. 3). After inking the template, a pass is made with the blanket 23. The ink is transferred from the template to the blanket 23 then, from the latter, to the test piece 21.
  • the end of the blanket 23 doesn’t is not yet adjusted and an additional part 24 protrudes.
  • the blanket 23 is in contact with the test piece 21 over a developed length greater than the development of the piece.
  • the ink that the blanker 23 has deposited on the proof piece 21 is redeposited, after the piece has made a complete revolution, on the additional part of the blanket.
  • the first patterns deposited by the blanket are the bars 8 and 20, these are printed 8 'and 10' on the piece 21 then redeposited on the blanket 8 "and 10". It is then checked that the top 18 "of the bar 8" is aligned at the same height as the top 14 of the bar 9 which marks the end of the blanket. We also check the alignment of the base 19 "of the bar 10" with the base 16 of the bar 11. If the vertices 18 "and 14 and the bases 19" and 16 are not aligned, we adjust the master template 100 on the sector by the set of fixing bars 34 (fig. 6) until said alignment is obtained. When the alignment is obtained, we have the demonstration that the axis AA 'as well as the alignment bars 8, 9, 10 and 11 are well oriented parallel to the axis of rotation of the sector.
  • the master template 100 being correctly positioned on the first sector, the sector is marked (fig. 4) by means of a stylus by tracing two marks aligned on the axis AA 'by the perforations 4 and 6 and two others marks aligned on the axis BB 'by the perforations 5 and 7.
  • the guide has a countersink 27 which follows the relief of the axis 28 and drives the stylus by sliding on the rail formed by the relief of the axis.
  • one of the three identical templates shown in fig. 1. We then pass over the blanket, but without using a proof piece this time.
  • the master template 100 which is mounted on the first sector deposits its patterns, in particular the locating crosses 2 on the blanket as in FIG. 3.
  • the second template 1 in turn deposits its patterns, as shown in FIG. 1 on the blanket.
  • the second template is then adjusted on the second sector until its locating crosses 2 exactly coincide on the blanket with the crosses 2 left by the master template 100.
  • the marking of the second is practiced sector in the same way as for the first.
  • the templates receive, in addition to the elements already described, gauges 29 making it possible to control the pressure on the blanket as well as the lining and millimeter scales 30, 31 and 32.
  • the gauges 29 are arranged differently on each of the four templates so that the gauges on each template leave a distinct imprint on the blanket.
  • the millimeter scales each have their own function.
  • Ladders 30 and 31 are arranged on the master template (fig. 7).
  • the origin of the scale 30 is placed on the blanket end line which is determined by the straight edge 13 of the alignment bars 9 and 11. As mentioned above, the blanket is longer than the development of the proof piece.
  • the scale 30 is printed from the master template on the additional part 24 of the blanket (fig. 3). Reading the reported scale 30 gives the exact indication of the length of the additional part 24 which will have to be deleted. This indication makes it possible to adjust the blanket holder sector 33 so that the real end X of the blanket coincides with the ideal end Y determined by the straight edge 13 of the alignment bars 9 and 11.
  • the second millimeter scale 31 (fig.
  • a millimeter scale 32 is arranged (fig. 8). Its center is the deferred origin of the scale 31; its axis is parallel to the axis AA '.
  • the ladder 31 is deployed over the entire length of the master jig, since it frequently happens that the sectors of a machine are in a completely de-synchronized phase.
  • the scale 32 printed by the second template for example can be found both on the far left and on the far right of the imprint left by the master template on the blanket.
  • the measurement of the correction to be made can be read directly at the point of intersection between the scale 31 and the scale 32.
  • the correction in development, ie the synchronization of the sectors, can be read on scale 31; the correction affecting the height positioning of the template on the sector can be read on the scale 32.
  • the assembly formed by the scales 31 of the master template and 32 of each of the three other templates has the same function as the locating crosses 2 , but occurs when the amplitude of the corrections is greater.
  • the machine When the machine is preset, that is to say when the axes AA 'and BB' have been traced on the four sectors, the machine is ready to receive the working shots and to start the serial printing of the parts.
  • the setting in machine of the sets of stereotypes is summarized for the operator to check the coincidence of the axes AA 'and BB' traced on the sector with the axes AA 'and BB' engraved on the stereotype (fig. 6e).
  • the operator just has to adjust the picture by the play of the fixing bars 34 (fig. 6) by bringing the axes in superposition.
  • the machine preset allows different formats to be used; in fact, the axis AA 'being close to the attachment margin 3, whatever the size of the plate, it is possible to punch two holes revealing the axis AA'. Regarding the axis BB ', it will be halfway up if the picture is large, it will be at the top of the picture if it is small.
  • the advantage of the present invention compared to already known solutions is to be able to move the adjustment moment to a certain extent, or more exactly to split the adjustment into two separate stages. your.
  • the first step is to preset the machine. This is a little longer than the setting as it is usually practical, but it has the merit of deploying a permanent effect, and therefore does not have to be repeated.
  • the second step closely dependent on the first, consists in shifting the timing of the adjustment of the plate on the sector or, more precisely, in presetting it so that the adjustment in machine is limited to a simple control, thus eliminating the groping which immobilizes the machine too much.

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  • Mechanical Engineering (AREA)
  • Engineering & Computer Science (AREA)
  • Printing Methods (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)
  • Amplifiers (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)
  • Apparatuses And Processes For Manufacturing Resistors (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
  • Surgical Instruments (AREA)
  • Bidet-Like Cleaning Device And Other Flush Toilet Accessories (AREA)
  • Washing And Drying Of Tableware (AREA)
  • Pens And Brushes (AREA)
  • Superconductors And Manufacturing Methods Therefor (AREA)
  • Drying Of Solid Materials (AREA)
  • Printing Plates And Materials Therefor (AREA)
  • Treating Waste Gases (AREA)
  • Looms (AREA)
  • Optical Recording Or Reproduction (AREA)
  • Dry Formation Of Fiberboard And The Like (AREA)
  • Manufacture Or Reproduction Of Printing Formes (AREA)
  • Steering Control In Accordance With Driving Conditions (AREA)
  • Pinball Game Machines (AREA)
  • Vehicle Body Suspensions (AREA)
  • Ceramic Products (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)
  • Soil Working Implements (AREA)
  • Oscillators With Electromechanical Resonators (AREA)
  • Ultra Sonic Daignosis Equipment (AREA)
  • Discharging, Photosensitive Material Shape In Electrophotography (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)

Abstract

Procédé de préréglage d'une machine offset à sec, destinée à l'impression de pièces cylindriques ou coniques, selon lequel des gabarits de préréglage sont réalisés à partir d'un film-matrice, utilisé également comme base de la production des clichés de travail, et servent à régler de façon permanente la machine de sorte que l'introduction subsequente des clichés ne donne lieu qu'à un simple contrôle.Method for presetting a dry offset machine, intended for printing cylindrical or conical parts, according to which presetting templates are produced from a matrix film, also used as the basis for the production of working plates , and are used to permanently adjust the machine so that the subsequent introduction of the shots only gives rise to a simple check.

Description

La présente invention concerne un procédé de préréglage d'une machine offset à sec destinée à l'impression de pièces cylindriques ou coniques. De très nombreux produits sont présentés dans des récipients cylindri- lques ou coniques, ainsi par exemple dans le domaine des cosmétiques, on utilise des tubes aérosols et des pots. Les tubes de colle, les pots de yoghourt et les peintures en spray en sont d'autres exemples. La décoration ou les indications qui figurent sur ces récipients sont imprimés au moyen de machines offset à sec. Ces machines sont d'un coût assez élevé, aussi convient-il de les utiliser de manière quasi continue pour les amortir. Cela est encore plus impératif lorsque l'impression est réalisée par une machine intégrée à une ligne complète de fabtication dans laquelle les pièces sont façonnées, imprimées, séchées, subissent un usinage final et sont même quelquefois remplies et emballées. Dans de telles lignes de production, tout arrêt représente une perte considérable. Or, il faut bien arrêter la ligne au moment de changer les clichés pour entamer une nouvelle série de pièces aux motifs différents. Vu le coût d'immobilisation de la machine, le temps consacré à la mise en place et au réglage d'un nouveau jeu de clichés doit être réduit au minimum. Cette préoccupation se retrouve d'ailleurs dans d'autres domaines où l'impression intervient et a donné lieu à de nombreuses tentatives. Il existe ainsi diverses solutions qui sont exposées notamment dans des documents de brevets. La plupart de ces solutions obéissent à un même principe : combiner l'opération de fixation ou d'accrochage du cliché sur le secteur porte-cliché avec l'opération de réglage des clichés entre eux. L'application de ce principe se traduit en général par l'aménagement dans le cliché de perforations dans lesquelles des griffes d'accrochage solidaires du secteur viennent se loger puis tendent et mettent en place le cliché sur le secteur. Diverses variantes de ce genre de solutions sont exposées notamment dans les documents : CH 492 557, CH 551 241, DE Offenlegungsschrift 25 01 266, DE Offenlegungsschrift 29 44 675, DE Offenlegungsschrift 30 25 060, DE Auslegeschrift 20 45 953, DE Patentschrift 20 10 899, GB 1 575 016, US 3 908 546.The present invention relates to a method for presetting a dry offset machine intended for printing cylindrical or conical parts. Many products are presented in cylindrical or conical containers, so for example in the field of cosmetics, aerosol tubes and jars are used. Glue tubes, yogurt jars and spray paints are other examples. The decoration or the indications which appear on these containers are printed by means of dry offset machines. These machines are quite expensive, so it is advisable to use them almost continuously to amortize them. This is even more imperative when the printing is carried out by a machine integrated into a complete manufacturing line in which the parts are shaped, printed, dried, undergo a final machining and are even sometimes filled and packaged. In such production lines, any downtime represents a considerable loss. However, it is necessary to stop the line when changing the shots to start a new series of pieces with different patterns. Given the cost of immobilizing the machine, the time spent setting up and adjusting a new set of plates should be kept to a minimum. This concern is also found in other areas where printing intervenes and has given rise to numerous attempts. There are thus various solutions which are exposed in particular in patent documents. Most of these solutions obey the same principle: combine the operation of fixing or hanging the plate on the plate holder sector with the operation of adjusting the plates between them. The application of this principle generally results in the arrangement in the plate of perforations in which hooking claws integral with the sector are housed and then tend and place the plate on the sector. Various variants of this kind of solution are set out in particular in the documents: CH 492 557, CH 551 241, DE Offenlegungsschrift 25 01 266, DE Offenlegungsschrift 29 44 675, DE Offenlegungsschrift 30 25 060, DE Auslegeschrift 20 45 953, DE Patentschrift 20 10 899, GB 1,575,016, US 3,908,546.

La caractéristique principale des solutions déjà connues est que la précision du réglage en machine est tributaire de la précision avec laquelle les perforations ont été pratiquées ainsi que de l'ajustage exact des griffes à la forme des perforations. Cette précision est limitée par les caractéristiques nécessaires du matériau utilisé pour confectionner les clichés, ainsi que par la difficulté de réaliser des griffes à la fois mobiles et n'ayant cependant aucun jeu. Dans la pratique, ces systèmes ne sont pas utilisés car ils ne donnent pas pleine satisfaction. Le réglage des clichés en machine est donc réalisé la plupart du temps par tâtonnement, la durée de l'opération dépendant alors de l'habileté ou de la chance du conducteur de la machine. Pour une machine à quatre couleurs ayant par conséquent quatre secteurs sur lesquels quatre clichés sont montés, le temps de réglage est d'environ deux heures. C'est dans le dessein de ramener ce temps de réglage à environ quinze minutes que la présente invention a été faite.The main characteristic of the already known solutions is that the precision of the machine adjustment is dependent on the precision with which the perforations have been made as well as the exact adjustment of the claws in the shape of the perforations. This precision is limited by the necessary characteristics of the material used to make the plates, as well as by the difficulty of producing claws which are both mobile and which however have no play. In practice, these systems are not used because they do not not give full satisfaction. The adjustment of the machine shots is therefore carried out most of the time by trial and error, the duration of the operation then depending on the skill or the luck of the operator of the machine. For a four-color machine therefore having four sectors on which four plates are mounted, the setting time is approximately two hours. It is with the intention of reducing this adjustment time to approximately fifteen minutes that the present invention was made.

La solution définie par l'invention est exposée dans les revendications.The solution defined by the invention is set out in the claims.

Le procédé est décrit ci-dessous par le texte et le dessin où :

  • la fig. 1 montre un gabarit de préréglage
  • la fig. 2 montre le maître-gabarit
  • la fig. 3 montre une vue d'un secteur porte-blanchet et d'une pièce-épreuve.
  • la fig. 4 montre une vue du marquage d'un secteur
  • la fig. 4b montre une vue du guide de marquage
  • la fig. 5 montre une vue d'un secteur sur lequel des axes sont tracés
  • la fig. 6 montre une vue d'un cliché de travail (ou d'un gabarit) lors de la mise en position sur un secteur.
  • la fig. 6 e montre l'apparition par une perforation de l'axe tracé sur un secteur
  • la fig. 7 montre une variante enrichie du maître-gabarit et
  • la fig. 8 montre une variante enrichie d'un gabarit
The process is described below by the text and the drawing where:
  • fig. 1 shows a preset template
  • fig. 2 shows the master template
  • fig. 3 shows a view of a blanket sector and a proof room.
  • fig. 4 shows a view of the marking of a sector
  • fig. 4b shows a view of the marking guide
  • fig. 5 shows a view of a sector on which axes are drawn
  • fig. 6 shows a view of a working shot (or a template) when positioning in a sector.
  • fig. 6 e shows the appearance by a perforation of the axis traced on a sector
  • fig. 7 shows an enriched variant of the master template and
  • fig. 8 shows a variant enriched with a template

La fig. 3 ne montre pas l'image imprimée sur le blanchet telle qu'elle se présente en réalité, en effet, les gabarits étant gravés en positif, ils sont "lisibles", ce qui a pour conséquence que le blanchet est "illisible" puisque l'image est inversée. Dans le dessin, on a volontairement ignoré cette inversion pour que le lecteur retrouve les divers éléments dans la même disposition dans toutes les figures.Fig. 3 does not show the image printed on the blanket as it actually appears, in fact, the templates being engraved in positive, they are "readable", which has the consequence that the blanket is "illegible" since the image is reversed. In the drawing, this inversion has been deliberately ignored so that the reader finds the various elements in the same arrangement in all the figures.

Comme on le voit à la fig. 1, le gabarit de préréglage est un cliché mince, identique à ceux utilisés usuellement en offset à sec. Le gabarit 1 est réalisé selon le même processus qu'un cliché de travail. Les divers éléments qui apparaissent sur le gabarit dans les figures sont d'abord disposés sur un film lith- orthochromatique permettant la copie sur plaques photopolymères, les plaques étant ensuite plongées dans un bain de lavage créant le relief.As seen in fig. 1, the preset template is a thin plate, identical to those usually used in dry offset. The template 1 is produced according to the same process as a working plate. The various elements that appear on the template in the figures are first arranged on a lithorthochromatic film allowing copying on photopolymer plates, the plates then being immersed in a washing bath creating the relief.

Dans la description qui suit, les divers éléments gravés participant à l'invention sont décrits tels qu'ils apparaissent sur le cliché réalisé. Les opérations qui permettent de réalider le film, et de graver ensuite les plaques sont une technique bien connue des hommes du métier et ne sont pas décrites ici.In the following description, the various engraved elements participating in the invention are described as they appear on the photograph produced. The operations which make it possible to re-make the film, and then to etch the plates are a technique well known to those skilled in the art and are not described here.

Des croix de repérage 2 usuelles en photogravure sont disposée sur un film. On ajoute deux axes AA' et BB'. L'axe AA' est disposé parallèlement a l'axe de rotation du secteur porte-cliché sur lequel le gabarit sera fixé dans une étape ultérieure. L'axe AA' est situé à proximité de la marge d'accrochage droite 3 du gabarit. Sa position plus ou moins rapprochée de ladite marge ne joue pas de rôle. Le deuxième axe BB' est ensuite disposé perpendiculairement à l'axe AA' dans la variante présentée. La direction de l'axe BB' n'est cependant pas nécessairement perpendiculaire à l'axe AA', mais il est préférable que les deux axes forment entre eux un angle compris entre 80 et 100°. Le film portant les croix de repérage 2 et les axes AA' et BB' constitue une matrice de base. Sur une copie de cette matrice, on dispose ensuite (fig. 2) quatre barres d'alignement 8, . 9, 10 et 11 rigoureusement parallèles à l'axe AA', donc à l'axe de rotation du secteur porte-cliché. Ces barres ont une largeur de 5 mm et une longueur de 35 mm dans la variante représentée. Les deux barres de droite 9 et 11 sont placées à une distance du bord droit 12 du cliché qui varie selon la machine sur laquelle les clichés auront à travailler. Pour une machine du type W1FAG, la distance qui sépare le bord droit 12 du cliché du bord droit 13 des barres 9 et 11 est fixée à 40 mm. Le sommet 14 de la barre 9 est disposé à 25 mm du haut du cliché 15. La base 16 de la barre 11 est située à 25 mm du bas du cliché 17. Les deux barres de gauche 8 et 10 ont les mêmes dimensions que les deux barres de droite. Leur positionnement sur le cliché tient compte de deux facteurs. Premièrement, leur position est déterminée par deux perpendiculaires à l'axe AA'. L'une d'elles est élevée par le sommet 14 de la barre supérieure droite 9. Le sommet 18 de la barre 8 est aligné sur cette perpendiculaire. De la même façon, on aligne la base 16 de la barre 11 et la base 19 de la barre 10 sur une même perpendiculaire à l'axe AA'. Secondement, la distance qui sépare le côté droit 13 des deux barres de droite 9 et 11 du côté gauche 20 des deux barres de gauche 8 et 10 est déterminée par le développement des pièces sur lesquelles l'impression aura finalement lieu. Les diamètres usuels des pièces qui sont imprimées au moyen de clichés du format représenté sont 35, 40 et 45 mm. Les développements de ces pièces sont donc respectivement de 109,2 mm, 124,8 mm et 140,4 mm. Dans la variante représentée à la fig. 2, la distance est de 124,8 mm et correspond ainsi à une pièce de 40 mm de diamètre. Il est aussi envisagé de faire figurer sur un même gabarit les barres correspondant à plusieurs développements (fig. 7). Le nombre de gabarits qui doivent être gravés dépend du nombre de groupes couleur que comporte la machine. Pour une presse offset à sec à quatre groupes couleur, quatre gabarits sont réalisés. Le premier de ces quatre gabarits, le maître-gabarit-100 qui correspond au premier secteur, comporte tous les éléments décrits jusqu'ici, à savoir les croix de reprêrage 2, les axes de positionnement AA' et BB' et les barres d'alignement 8, 9, 10 et 11 (fig. 2). Les trois autres gabarits sont identiques l'un à l'autre, mais ne comportent que les croix 2 et les axes AA' et BB' (fig. 1). Une fois les quatre gabarits réalisés, on pratique sur chacun d'eux quatre perforations. Les quatre perforations sont positionnées de la même façon et aux mêmes endroits sur chaque gabarit. On pratique, centrées sur l'axe AA', deux perforations 4 et d'un diamètre de l'ordre de 5 à 10 mm, l'une des perforations 4 pratiquée dans le haut du cliché, l'autre 6 dans le bas. Ces perforations sont circulaires dans le dessin, mais on envisage également d'autres formes, notamment oblongues, carrées ou triangulaires. Deux autres perforations sont ensuite pratiquées sur l'axe BB', l'une 5 sur la droite du gabarit et centrée à la fois sur l'axe BB' et sur l'axe AA'. Cette perforation est également prévue à l'écart de l'axe AA', mais la variante représentée aux fig. 1 et 2 permet d'avoir par la suite un troisième repère 5 qui vient s'ajouter aux deux perforations 4 et 6 de l'axe AA' déjà décrites. Une deuxième perforation 7 est pratiquée sur l'axe BB', mais sur la gauche du gabarit cette fois. Les quatre gabarits sont ensuite cintrés jusqu'à une courbure à peine plus ouverte que celle des secteurs sur lesquels les gabarits seront montés. Une fois les gabarits perforés et cintrés, ils sont montés en machine. Le préréglage de la machine peut alors être effectué. Le préréglage débute par le positionnement du maître-gabarit sur le premier groupe couleur de la machine. Le maître-gabarit 100 est celui qui possède les barres d'alignement 8, 9, 10 et 11 en plus des croix 2 et des axes AA' et BB'. On fixe le maître-gabarit sur le secteur correspondant au premier groupe. On place ensuite une pièce-épreuve 21 sur le mandrin porte-pièce 22 (fig. 3). Après encrage du gabarit, on effectue un passage avec le blanchet 23. L'encre se reporte du gabarit sur le blanchet 23 puis, de celui-ci, sur la pièce-épreuve 21. A ce stade, la fin du blanchet 23 n'est pas encore ajustée et une partie supplémentaire 24 dépasse. De ce fait, le blanchet 23 est en contact avec la pièce-épreuve 21 sur une longueur développée plus grande que le développement de la pièce. Il en résulte que l'encre que le blan- cher 23 a déposée sur la pièce-épreuve 21 est redéposée, après que la pièce ait effectué un tour complet, sur la partie supplémentaire du blanchet.Usual locating crosses 2 in photoengraving are placed on a film. Two axes AA 'and BB' are added. The axis AA 'is arranged parallel to the axis of rotation of the plate-holding sector on which the template will be fixed in a subsequent step. The axis AA 'is located near the right hooking margin 3 of the template. Its position more or less close to said margin does not play a role. The second axis BB 'is then arranged perpendicular to the axis AA' in the variant presented. The direction of the axis BB 'is however not necessarily perpendicular to the axis AA', but it is preferable that the two axes form an angle between 80 and 100 ° between them. The film carrying the locating crosses 2 and the axes AA 'and BB' constitutes a basic matrix. On a copy of this matrix, we then have (fig. 2) four alignment bars 8,. 9, 10 and 11 strictly parallel to the axis AA ', therefore to the axis of rotation of the plate-holder sector. These bars have a width of 5 mm and a length of 35 mm in the variant shown. The two right bars 9 and 11 are placed at a distance from the right edge 12 of the plate which varies according to the machine on which the plates will have to work. For a machine of the W1FAG type, the distance which separates the right edge 12 of the plate from the right edge 13 of the bars 9 and 11 is fixed at 40 mm. The top 14 of the bar 9 is placed 25 mm from the top of the plate 15. The base 16 of the bar 11 is located 25 mm from the bottom of the plate 17. The two left bars 8 and 10 have the same dimensions as the two bars on the right. Their positioning on the photograph takes into account two factors. First rement, their position is determined by two perpendicular to the axis AA '. One of them is raised by the vertex 14 of the upper right bar 9. The vertex 18 of the bar 8 is aligned on this perpendicular. In the same way, the base 16 of the bar 11 and the base 19 of the bar 10 are aligned on the same perpendicular to the axis AA '. Secondly, the distance which separates the right side 13 of the two right bars 9 and 11 from the left side 20 of the two left bars 8 and 10 is determined by the development of the parts on which the printing will finally take place. The usual diameters of the parts which are printed by means of plates of the format shown are 35, 40 and 45 mm. The developments of these parts are therefore respectively 109.2 mm, 124.8 mm and 140.4 mm. In the variant shown in FIG. 2, the distance is 124.8 mm and thus corresponds to a part 40 mm in diameter. It is also envisaged to include on the same template the bars corresponding to several developments (fig. 7). The number of templates that must be engraved depends on the number of color groups in the machine. For a dry offset press with four color groups, four templates are produced. The first of these four templates, the master template-100 which corresponds to the first sector, includes all the elements described so far, namely the crossbeams 2, the positioning axes AA 'and BB' and the bars alignment 8, 9, 10 and 11 (fig. 2). The other three templates are identical to each other, but only have crosses 2 and axes AA 'and BB' (fig. 1). Once the four templates have been made, four perforations are made on each of them. The four perforations are positioned in the same way and in the same places on each template. We practice, centered on the axis AA ', two perforations 4 and with a diameter of the order of 5 to 10 mm, one of the perforations 4 made in the top of the plate, the other 6 in the bottom. These perforations are circular in the drawing, but other shapes are also envisaged, in particular oblong, square or triangular. Two other perforations are then made on the axis BB ', one 5 on the right of the template and centered both on the axis BB' and on the axis AA '. This perforation is also provided away from the axis AA ′, but the variant shown in FIGS. 1 and 2 makes it possible subsequently to have a third reference 5 which is added to the two perforations 4 and 6 of the axis AA 'already described. A second perforation 7 is made on the axis BB ', but on the left of the template this time. The four templates are then bent to a curvature barely more open than that of the sectors on which the templates will be mounted. Once the templates are perforated and bent, they are machine mounted. Machine presetting can then be carried out. The presetting begins with the positioning of the master template on the first color group of the machine. The master jig 100 is the one which has the alignment bars 8, 9, 10 and 11 in addition to the crosses 2 and the axes AA 'and BB'. The master template is fixed on the sector corresponding to the first group. A test piece 21 is then placed on the workpiece mandrel 22 (fig. 3). After inking the template, a pass is made with the blanket 23. The ink is transferred from the template to the blanket 23 then, from the latter, to the test piece 21. At this stage, the end of the blanket 23 doesn’t is not yet adjusted and an additional part 24 protrudes. As a result, the blanket 23 is in contact with the test piece 21 over a developed length greater than the development of the piece. As a result, the ink that the blanker 23 has deposited on the proof piece 21 is redeposited, after the piece has made a complete revolution, on the additional part of the blanket.

Comme le montre la fig. 3, les premiers motifs déposés par le blanchet sont les barres 8 et 20, celles-ci sont imprimées 8' et 10' sur la pièce 21 puis redéposées sur le blanchet 8" et 10". On vérifie alors que le sommet 18" de la barre 8" est bien aligné à la même hauteur que le sommet 14 de la barre 9 qui marque la fin du blanchet. On vérifie également l'alignement de la base 19" de la barre 10" avec la base 16 de la barre 11. Si les sommets 18" et 14 et les bases 19" et 16 ne sont pas alignés, on ajuste le maître-gabarit 100 sur le secteur par le jeu des barrettes de fixation 34 (fig. 6) jusqu'à obtention dudit alignement. Lorsque l'alignement est obtenu, on a la démonstration que l'axe AA' ainsi que les barres d'alignement 8, 9, 10 et 11 sont bien orientées parallèlement à l'axe de rotation du secteur.As shown in fig. 3, the first patterns deposited by the blanket are the bars 8 and 20, these are printed 8 'and 10' on the piece 21 then redeposited on the blanket 8 "and 10". It is then checked that the top 18 "of the bar 8" is aligned at the same height as the top 14 of the bar 9 which marks the end of the blanket. We also check the alignment of the base 19 "of the bar 10" with the base 16 of the bar 11. If the vertices 18 "and 14 and the bases 19" and 16 are not aligned, we adjust the master template 100 on the sector by the set of fixing bars 34 (fig. 6) until said alignment is obtained. When the alignment is obtained, we have the demonstration that the axis AA 'as well as the alignment bars 8, 9, 10 and 11 are well oriented parallel to the axis of rotation of the sector.

L'espace qui sépare les barres 14 et 18" ainsi que les barres 16 et 19" vient du fait que le nombre_ τ a une valeur conventionnellement différente dans ce domaine de l'impression, la valeur conventionnelle est : 3,12.The space which separates the bars 14 and 18 "as well as the bars 16 and 19" comes from the fact that the number_ τ has a conventionally different value in this area of printing, the conventional value is: 3.12.

Selon que la machine offset tourne dans le sens de la marche des aiguilles d'une montre (Type WIFAG) (fig. 3) ou dans le sens inverse, la fin du blanchet se trouvera sur la droite ou sur la gauche, dans ce cas, toutes les positions des éléments ci-dessus sont simplement inversées.Depending on whether the offset machine rotates clockwise of a watch (Type WIFAG) (fig. 3) or in the opposite direction, the end of the blanket will be on the right or on the left, in this case, all the positions of the above elements are simply reversed.

Le maître-gabarit 100 étant correctement positionné sur le premier secteur, on procède au marquage du secteur (fig. 4) au moyen d'un stylet en traçant deux repères alignés sur l'axe AA' par les perforations 4 et 6 et deux autres repères alignés sur l'axe BB' par les perforations 5 et 7.The master template 100 being correctly positioned on the first sector, the sector is marked (fig. 4) by means of a stylus by tracing two marks aligned on the axis AA 'by the perforations 4 and 6 and two others marks aligned on the axis BB 'by the perforations 5 and 7.

Pour effectuer le marquage, on utilise soit un stylet simple 25 (fig. 4) soit un stylet monté sur un guide 26 (fig. 4a). Dans ce dernier cas, le guide possède une fraisure 27 qui épouse le relief de l'axe 28 et conduit le stylet en coulissant sur le rail formé par le relief de l'axe.To mark, use either a simple stylus 25 (fig. 4) or a stylus mounted on a guide 26 (fig. 4a). In the latter case, the guide has a countersink 27 which follows the relief of the axis 28 and drives the stylus by sliding on the rail formed by the relief of the axis.

Pour régler le groupe correspondant à la deuxième couleur, on place sur le deuxième secteur l'un des trois gabarits identiques représentés à la fig. 1. On effectue ensuite un passage sur le blanchet, mais sans faire intervenir une pièce-épreuve cette fois. Le maître-gabarit 100 qui est monté sur le premier secteur dépose ses motifs, notamment les croix de repérage 2 sur le blanchet comme dans la fig. 3. Le deuxième gabarit 1 dépose à son tour ses motifs, tels que représentés à la fig. 1 sur le blanchet. Le deuxième gabarit est alors ajusté sur le deuxième secteur jusqu'à ce que ses croix de repérage 2 coïncident exactement sur le blanchet aux croix 2 laissées par le maître-gabarit 100. Lorsque la coïncidence des croix est parfaite, on pratique le marquage du deuxième secteur de la même façon que pour le premier.To adjust the group corresponding to the second color, one of the three identical templates shown in fig. 1. We then pass over the blanket, but without using a proof piece this time. The master template 100 which is mounted on the first sector deposits its patterns, in particular the locating crosses 2 on the blanket as in FIG. 3. The second template 1 in turn deposits its patterns, as shown in FIG. 1 on the blanket. The second template is then adjusted on the second sector until its locating crosses 2 exactly coincide on the blanket with the crosses 2 left by the master template 100. When the coincidence of the crosses is perfect, the marking of the second is practiced sector in the same way as for the first.

L'opération décrite ci-dessus est répétée pour le troisième, puis pour le quatrième secteur. Les croix de repérage correspondant aux quatre groupes sont ainsi parfaitement superposées et les quatre secteurs sont marqués.The operation described above is repeated for the third, then for the fourth sector. The cross marks corresponding to the four groups are thus perfectly superimposed and the four sectors are marked.

On retire alors les quatre gabarits de la machine et l'on trace (fig. 5) sur chacun des secteurs les axes AA' et BB' en reliant les repères qui ont été marqués au travers des perforations 4, 5, 6 et 7 comme décrit plus haut. Chacun des secteurs porte dès lors les deux axes AA' et BB' comme le représente la fig. 5.We then remove the four templates from the machine and trace (fig. 5) on each of the sectors the axes AA 'and BB' by connecting the marks which have been marked through the perforations 4, 5, 6 and 7 as described above. Each of the sectors therefore carries the two axes AA 'and BB' as shown in FIG. 5.

Dans une variante enrichie (fig. 7 et 8), les gabarits reçoivent en plus des éléments déjà décrits, des jauges 29 permettant de contrôler la pression sur le blanchet ainsi que le doublage et des échelles millimétriques 30, 31 et 32. Les jauges 29 sont disposées différemment sur chacun des quatre gabarits de sorte que les jauges de chaque gabarit laissent une empreinte distincte sur le blanchet.In an enriched variant (FIGS. 7 and 8), the templates receive, in addition to the elements already described, gauges 29 making it possible to control the pressure on the blanket as well as the lining and millimeter scales 30, 31 and 32. The gauges 29 are arranged differently on each of the four templates so that the gauges on each template leave a distinct imprint on the blanket.

Les échelles millimétriques ont chacune une fonction propre. Les échelles 30 et 31 sont disposées sur le maître-gabarit (fig. 7). L'origine de l'échelle 30 est placée sur la ligne de fin de blanchet qui est déterminée par le bord droit 13 des barres d'alignement 9 et 11. Comme on l'a dit plus haut, le blanchet est plus long que le développement de la pièce-épreuve. L'échelle 30 est imprimée du maître-gabarit sur la partie supplémentaire 24 du blanchet (fig. 3). La lecture de l'échelle reportée 30 donne l'indication exacte de la longueur de la partie supplémentaire 24 qu'il faudra supprimer. Cette indication permet d'ajuster le secteur porte-blanchet 33 de façon que la fin réelle X du blanchet coïncide avec la fin idéale Y déterminée par le bord droit 13 des barres d'alignement 9 et 11. La deuxième échelle millimétrique 31 (fig. 7) est placée perpendiculairement à l'axe AA'. Son origine est placée dans la partie centrale du maître-gabarit, la position exacte ne joue pas de rôle. Cependant, lorsqu'elle aura été choisie, elle sera reportée exactement sur les trois autres gabarits 1 (fig. 8). L'échelle 31 est double en ce sens que la graduation se développe vers la droite et vers la gauche à partir de l'origine.The millimeter scales each have their own function. Ladders 30 and 31 are arranged on the master template (fig. 7). The origin of the scale 30 is placed on the blanket end line which is determined by the straight edge 13 of the alignment bars 9 and 11. As mentioned above, the blanket is longer than the development of the proof piece. The scale 30 is printed from the master template on the additional part 24 of the blanket (fig. 3). Reading the reported scale 30 gives the exact indication of the length of the additional part 24 which will have to be deleted. This indication makes it possible to adjust the blanket holder sector 33 so that the real end X of the blanket coincides with the ideal end Y determined by the straight edge 13 of the alignment bars 9 and 11. The second millimeter scale 31 (fig. 7) is placed perpendicular to the axis AA '. Its origin is placed in the central part of the master template, the exact position does not play a role. However, when it has been chosen, it will be transferred exactly to the other three templates 1 (fig. 8). The scale 31 is double in the sense that the graduation develops to the right and to the left from the origin.

Sur les trois autres gabarits 1, une échelle millimétrique 32 est disposée (fig. 8). Elle a pour centre l'origine reportée de l'échelle 31; son axe est parallèle à l'axe AA'.On the other three templates 1, a millimeter scale 32 is arranged (fig. 8). Its center is the deferred origin of the scale 31; its axis is parallel to the axis AA '.

L'échelle 31 se déploie sur toute la longueur du maître-gabarit, car il arrive fréquemment que les secteurs d'une machine soient dans une phase totalement déxynchronisée. Dans ce cas, l'échelle 32 imprimée par le deuxième gabarit par exemple peut se trouver aussi bien sur l'extrême gauche que sur l'extrême droite de l'empreinte laissée par le maître-gabarit sur le blanchet. La mesure de la correction à apporter peut se lire directement à l'endroit d'intersection entre l'échelle 31 et l'échelle 32. La correction dans le développement, soit la synchronisation des secteurs, se lit sur l'échelle 31; la correction touchant le positionnement en hauteur du gabarit sur le secteur se lit sur l'échelle 32. L'ensemble formé par les échelles 31 du maître-gabarit et 32 de chacun des trois autres gabarits a la même fonction que les croix de repérage 2, mais intervient lorsque l'amplitude des corrections est plus importante.The ladder 31 is deployed over the entire length of the master jig, since it frequently happens that the sectors of a machine are in a completely de-synchronized phase. In this case, the scale 32 printed by the second template for example can be found both on the far left and on the far right of the imprint left by the master template on the blanket. The measurement of the correction to be made can be read directly at the point of intersection between the scale 31 and the scale 32. The correction in development, ie the synchronization of the sectors, can be read on scale 31; the correction affecting the height positioning of the template on the sector can be read on the scale 32. The assembly formed by the scales 31 of the master template and 32 of each of the three other templates has the same function as the locating crosses 2 , but occurs when the amplitude of the corrections is greater.

Lorsque la machine est préréglée, c'est-à-dire lorsque les axes AA' et BB' ont été tracés sur les quatre secteurs, la machine est prête à recevoir les clichés de travail et à commencer l'impression en série des pièces.When the machine is preset, that is to say when the axes AA 'and BB' have been traced on the four sectors, the machine is ready to receive the working shots and to start the serial printing of the parts.

Tous les clichés de travail sont établis sur la base de copies du film matrice. De ce fait, les axes AA' et BB' figurent sur tous les clichés. Ils ne sont matérialisés par la gravure qu'au voisinage des perforations 4, 5, 6 et 7 (fig. 6 et 6e).All working shots are made on the basis of copies of the matrix film. Therefore, the axes AA 'and BB' appear on all the pictures. They are only materialized by engraving in the vicinity of the perforations 4, 5, 6 and 7 (fig. 6 and 6e).

La mise en machine des jeux de clichés se résume pour l'opérateur à vérifier la coïncidence des axes AA' et BB' tracés sur le secteur avec les axes AA' et BB' gravés sur le cliché (fig. 6e). Il suffit à l'opérateur d'ajuster le cliché par le jeu des barrettes de fixation 34 (fig. 6) en amenant les axes en superposition.The setting in machine of the sets of stereotypes is summarized for the operator to check the coincidence of the axes AA 'and BB' traced on the sector with the axes AA 'and BB' engraved on the stereotype (fig. 6e). The operator just has to adjust the picture by the play of the fixing bars 34 (fig. 6) by bringing the axes in superposition.

La mise en coïncidence et le contrôle sont rendus possibles par le fait que les perforations 4, 5, 6 et 7 pratiquées sur chacun des clichés laissent apparaître les axes tracés sur les secteurs (fig. 6e).Coincidence and control are made possible by the fact that the perforations 4, 5, 6 and 7 made on each of the photographs reveal the axes traced on the sectors (fig. 6e).

Le préréglage de la machine permet d'utiliser des formats de clichés différents; en effet, l'axe AA' étant à proximité de la marge d'accrochage 3, quelle que soit la grandeur du cliché, il est possible de perforer deux trous laissant apparaître l'axe AA'. En ce qui concerne l'axe BB', il se trouvera à mi-hauteur si le cliché est grand, il sera dans le haut du cliché si celui-ci est petit.The machine preset allows different formats to be used; in fact, the axis AA 'being close to the attachment margin 3, whatever the size of the plate, it is possible to punch two holes revealing the axis AA'. Regarding the axis BB ', it will be halfway up if the picture is large, it will be at the top of the picture if it is small.

L'avantage de la présente invention par rapport aux solutions déjà connues est de parvenir à déplacer dans une certaine mesure le moment du réglage, ou plus exactement de scinder le réglage en deux étapes distinctes. La première étape est le préréglage de la machine. Celui-ci est un peu plus long que le réglage tel qu'il est pratique d'ordinaire, mais il a le mérite de déployer un effet permanent, et n'a donc plus à être répété. La deuxième étape, étroitement dépendante de la première, consiste à déplacer le moment du réglage du cliché sur le secteur ou, plus précisément, à le prérégler de telle sorte que le réglage en machine soit limité à un simple contrôle, éliminant ainsi le tâtonnement qui immobilise par trop la machine.The advantage of the present invention compared to already known solutions is to be able to move the adjustment moment to a certain extent, or more exactly to split the adjustment into two separate stages. your. The first step is to preset the machine. This is a little longer than the setting as it is usually practical, but it has the merit of deploying a permanent effect, and therefore does not have to be repeated. The second step, closely dependent on the first, consists in shifting the timing of the adjustment of the plate on the sector or, more precisely, in presetting it so that the adjustment in machine is limited to a simple control, thus eliminating the groping which immobilizes the machine too much.

Les systèmes déjà connus tentent également de déplacer le moment du réglage, mais, outre leur fonctionnement incertain, ils présentent le handicap de demander une précision totale à une opération (la perforation des clichés) qui est justement celle qui s'y prête le moins. La présente invention, au contraire, requiert la même précision d'une opération qui s'y prête parfaitement (la copie du film-matrice) alors que les perforations utilisées sont pratiquées avec une précision relative sans qu'il en résulte aucun inconvénient.The systems already known also attempt to shift the timing of the adjustment, but, in addition to their uncertain functioning, they have the handicap of asking for total precision in an operation (the perforation of the pictures) which is precisely that which is least suitable for it. The present invention, on the contrary, requires the same precision of an operation which lends itself perfectly to it (copying the matrix film) whereas the perforations used are made with relative precision without any resulting disadvantage.

Claims (13)

1/ Procédé de préréglage d'une machine offset à sec, destinée à l'impression sur des pièces cylindriques ou coniques, composée notamment d'une série de secteurs porte-clichés, d'un secteur porte-blanchet, d'un blanchet et d'un mandrin porte-pièce caractérisé en ce que : a) on réalise un film-matrice sur lequel on grave deux axes AA' et BB' ainsi que des croix (2) b) on grave sur une copie du film-matrice les barres d'alignement (10, 11) ou des échelles d'ajustement (30, 31) c) on tire ensuite les gabarits (1) à partir du fim-matrice a) et un maître-gabarit (100) à partir du film-matrice enrichi b) d) on perfore dans ces gabarits, sur les axes AA' et BB', dans la plage du secteur porte-clichés, en deux points les plus éloignés l'un de l'autre sur l'axe AA' et sur l'axe BB', à l'intersection avec l'axe AA' et sur un point le plus éloigné de cette intersection sur l'axe BB'. e) on fixe le maître-gabarit sur le premier secteur de la machine en ajustant son positionnement grâce aux barres d'alignement (8", 10") ou aux échelles d'ajustement (30, 31) reportées sur le blanchet par la pièce-épreuve (21) f) on ajuste et on fixe ensuite le gabarit (1) sur chacun des autres secteurs de la machine à l'aide de croix (2) ou des échelles d'ajustement (31, 32) imprimées sur le blanchet g) on repère et on trace les axes AA' et BB' sur chacun des secteurs h) on reproduit tous les clichés de travail à partir de copies du film-matrice en conservant sur chacun d'eux les mêmes axes AA' et BB'. i) on met en place les clichés de travail en superposant les axes gravés sur les clichés aux axes tracés sur les secteurs. 1 / Method for presetting a dry offset machine, intended for printing on cylindrical or conical parts, composed in particular of a series of plate-holding sectors, of a blanket holder sector, of a blanket and a workpiece chuck characterized in that: a) a matrix film is produced on which two axes AA 'and BB' are engraved as well as crosses (2) b) the alignment bars (10, 11) or adjustment scales (30, 31) are engraved on a copy of the matrix film c) the templates (1) are then drawn from the matrix-a) and a master template (100) from the enriched matrix film b) d) one punctures in these templates, on the axes AA 'and BB', in the range of the plate holder sector, at two points furthest from each other on the axis AA 'and on the axis BB ', at the intersection with the axis AA' and at a point farthest from this intersection on the axis BB '. e) the master template is fixed to the first sector of the machine by adjusting its positioning using the alignment bars (8 ", 10") or the adjustment scales (30, 31) transferred to the blanket by the part - proof (21) f) adjusting and then fixing the template (1) on each of the other sectors of the machine using crosses (2) or adjustment scales (31, 32) printed on the blanket g) we identify and draw the axes AA 'and BB' on each of the sectors h) all the working shots are reproduced from copies of the matrix film while preserving on each of them the same axes AA 'and BB'. i) the working stereotypes are put in place by superimposing the axes engraved on the stereotypes on the axes traced on the sectors. 2/ Procédé selon la revendication 1, caractérisé en ce que l'on oriente l'un des axes (AA') pour qu'il soit parallèle à l'axe de rotation du secteur.2 / A method according to claim 1, characterized in that one of the axes (AA ') is oriented so that it is parallel to the axis of rotation of the sector. 3/ Procédé selon la revendication 1, caractérisé en ce que les barres d'alignement (8, 9, 10 et 11) que l'on dispose sur une copie du film-matrice sont divisées en deux groupes, les unes (8 et 10) marquant le début du développé de la pièce sur laquelle s'effectuera l'impression, les autres (9 et 11) marquant la fin du blanchet.3 / A method according to claim 1, characterized in that the alignment bars (8, 9, 10 and 11) which are placed on a copy of the matrix film are divided into two groups, one (8 and 10 ) marking the beginning of the development of the part on which the printing will be carried out, the others (9 and 11) marking the end of the blanket. 4/ Procédé selon la revendication 3, caractérisé en ce que la pièce-épreuve (21) reporte les images (8' et 10') des barres (8 et 10) sur le blanchet donnant ainsi les images (8" et 10")4 / A method according to claim 3, characterized in that the test piece (21) transfers the images (8 'and 10') of the bars (8 and 10) on the blanket thus giving the images (8 "and 10") 5/ Procédé selon la revendication 4, caractérisé en ce que l'on contrôle la mise en place du maître-gabarit (100) en vérifiant l'alignement des barres (9 et 8") et des barres (11 et 10")5 / A method according to claim 4, characterized in that one controls the establishment of the master template (100) by checking the alignment of the bars (9 and 8 ") and bars (11 and 10") 6/ Procédé selon la revendication 3, caractérisé en ce que l'on dispose l'origine de l'une (30) des échelles sur la ligne de fin de blanchet déterminée par le côté droit (13) des barres d'alignement (9 et 11), cette échelle étant reportée par la pièce-épreuve (21) sur la partie supplémentaire (24) du blanchet.6 / A method according to claim 3, characterized in that one has the origin of one (30) of the scales on the end of blanket line determined by the right side (13) of the alignment bars (9 and 11), this scale being transferred by the test piece (21) to the additional part (24) of the blanket. 7/ Procédé selon revendication 1, caractérisé en ce que deux échelles perpendiculaires (31 et 32) dont l'une (31) est perpendiculaire à l'axe (AA') ont une origine commune choisie dans la partie centrale du maître-gabarit (100)7 / A method according to claim 1, characterized in that two perpendicular scales (31 and 32) one of which (31) is perpendicular to the axis (AA ') have a common origin chosen in the central part of the master template ( 100) 8/ Procédé selon la revendication 7, caractérisé en ce que l'on dispose sur chaque gabarit (1) issu d'une copie simple du film-matrice une échelle (32) ayant la même origine que l'échelle (31) du maître-gabarit (100)8 / A method according to claim 7, characterized in that there is on each template (1) from a simple copy of the matrix film a scale (32) having the same origin as the scale (31) of the master - template (100) 9/ Procédé selon la revendication 1, caractérisé en ce que l'on repère les axes (AA' et BB') sur les secteurs par l'ouverture des perforations (4, 5, 6 et 7)9 / A method according to claim 1, characterized in that the axes (AA 'and BB') are identified on the sectors by the opening of the perforations (4, 5, 6 and 7) 10/ Procédé selon la revendication 1, caractérisé en ce que l'on réalise tous les clichés de travail sur la base du même film-matrice que celui qui a permis de réaliser les gabarits simples (1)10 / A method according to claim 1, characterized in that one carries out all the working shots on the basis of the same matrix film as that which made it possible to produce the simple templates (1) 11/ Procédé selon la revendication 1, caractérisé en ce que l'on effectue la superposition des axes gravés sur tous les clichés de travail sur ceux tracés sur le secteur en amenant les axes du cliché dans l'alignement des axes du secteur que l'on fait apparaître par les perforations (4, 5, 6 et 7) des clichés.11 / A method according to claim 1, characterized in that one carries out the superposition of the axes engraved on all the working shots on those traced on the sector by bringing the axes of the stereotype in the alignment of the axes of the sector which one makes appear by the perforations (4, 5, 6 and 7) of the stereotypes. 12/ Gabarit de préréglage pour machine offset à sec en tant que produit direct du procédé selon la revendication 6.12 / Presetting template for dry offset machine as a direct product of the process according to claim 6. 13/ Cliché préréglé pour machine offset à sec en tant que produit direct du procédé selon la revendication 10.13 / Preset plate for dry offset machine as a direct product of the process according to claim 10.
EP82420171A 1981-12-08 1982-12-06 Preadjusting method for a dry offset machine Expired EP0081443B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT82420171T ATE17681T1 (en) 1981-12-08 1982-12-06 PROCEDURE FOR PRESETTING A DRY OFFSET MACHINE.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH7831/81 1981-12-08
CH7831/81A CH648237A5 (en) 1981-12-08 1981-12-08 METHOD OF MANUFACTURING TEMPLATES AND CLICKS AND THEIR USE FOR ADJUSTING A DRY OFFSET MACHINE FOR PRINTING CYLINDRICAL OR CONICAL PARTS.

Publications (2)

Publication Number Publication Date
EP0081443A1 true EP0081443A1 (en) 1983-06-15
EP0081443B1 EP0081443B1 (en) 1986-01-29

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Application Number Title Priority Date Filing Date
EP82420171A Expired EP0081443B1 (en) 1981-12-08 1982-12-06 Preadjusting method for a dry offset machine

Country Status (18)

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US (1) US4520730A (en)
EP (1) EP0081443B1 (en)
JP (1) JPS58104748A (en)
AT (1) ATE17681T1 (en)
BE (1) BE895274A (en)
CA (1) CA1191393A (en)
CH (1) CH648237A5 (en)
DE (1) DE3268902D1 (en)
ES (1) ES517897A0 (en)
FI (1) FI73628C (en)
FR (1) FR2517593B1 (en)
GR (1) GR77851B (en)
IT (1) IT1154386B (en)
MX (1) MX157654A (en)
NO (1) NO159984C (en)
OA (1) OA07266A (en)
PT (1) PT75943B (en)
ZA (1) ZA828948B (en)

Cited By (1)

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Publication number Priority date Publication date Assignee Title
EP0381985A2 (en) * 1989-02-09 1990-08-16 Dieter Dr. Höll Method for printing non-absorbing materials and printing plate for realizing the method

Families Citing this family (2)

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Publication number Priority date Publication date Assignee Title
US5363564A (en) * 1993-04-22 1994-11-15 E. L. Harley Inc. Printing plate mounting and proofing machine and method for using same
US5722178A (en) * 1995-05-10 1998-03-03 Wells; Harold T. Method for setting and regulating the position of webbing in a printing press using premarked makeready tape

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FR438296A (en) * 1911-12-27 1912-05-13 Karl Marie Schlueter Templates for adjusting clichés
US2580576A (en) * 1948-11-15 1952-01-01 Jr Robert R Myers Method of registering multicolor printing plates
GB871664A (en) * 1957-08-01 1961-06-28 Hall Printing Co W F Multicolour printing process
DE1486872A1 (en) * 1965-03-15 1969-05-14 Mosstype Corp Machine for assembling flexible printing plates and for removing test prints of these plates
DE2045953A1 (en) * 1970-09-17 1972-03-23 Metje H Passing device for offset web presses
FR2312373A1 (en) * 1975-05-28 1976-12-24 Liege Ste Francaise Continuous stopper printing machine - has rotary disc transporting past flame treatment, printing and unloader units

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Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR438296A (en) * 1911-12-27 1912-05-13 Karl Marie Schlueter Templates for adjusting clichés
US2580576A (en) * 1948-11-15 1952-01-01 Jr Robert R Myers Method of registering multicolor printing plates
GB871664A (en) * 1957-08-01 1961-06-28 Hall Printing Co W F Multicolour printing process
DE1486872A1 (en) * 1965-03-15 1969-05-14 Mosstype Corp Machine for assembling flexible printing plates and for removing test prints of these plates
DE2045953A1 (en) * 1970-09-17 1972-03-23 Metje H Passing device for offset web presses
FR2312373A1 (en) * 1975-05-28 1976-12-24 Liege Ste Francaise Continuous stopper printing machine - has rotary disc transporting past flame treatment, printing and unloader units

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0381985A2 (en) * 1989-02-09 1990-08-16 Dieter Dr. Höll Method for printing non-absorbing materials and printing plate for realizing the method
EP0381985A3 (en) * 1989-02-09 1991-01-02 Dieter Dr. Höll Method for printing non-absorbing materials and printing plate for realizing the method

Also Published As

Publication number Publication date
PT75943B (en) 1985-02-27
NO159984B (en) 1988-11-21
IT1154386B (en) 1987-01-21
EP0081443B1 (en) 1986-01-29
ATE17681T1 (en) 1986-02-15
FI824195L (en) 1983-06-09
FI73628C (en) 1987-11-09
GR77851B (en) 1984-09-25
IT8224546A0 (en) 1982-12-01
FI73628B (en) 1987-07-31
OA07266A (en) 1984-08-31
ES8404913A1 (en) 1984-05-16
NO824106L (en) 1983-06-09
ES517897A0 (en) 1984-05-16
PT75943A (en) 1983-01-01
MX157654A (en) 1988-12-08
FR2517593B1 (en) 1986-02-14
CA1191393A (en) 1985-08-06
DE3268902D1 (en) 1986-03-13
US4520730A (en) 1985-06-04
FI824195A0 (en) 1982-12-07
BE895274A (en) 1983-06-07
FR2517593A1 (en) 1983-06-10
JPS58104748A (en) 1983-06-22
CH648237A5 (en) 1985-03-15
ZA828948B (en) 1983-10-26
NO159984C (en) 1989-03-01

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