EP1636033B1 - Systeme d'impression rotatifs au tampon pour imprimer un objet d'une flexibilite limitee - Google Patents
Systeme d'impression rotatifs au tampon pour imprimer un objet d'une flexibilite limitee Download PDFInfo
- Publication number
- EP1636033B1 EP1636033B1 EP03788716A EP03788716A EP1636033B1 EP 1636033 B1 EP1636033 B1 EP 1636033B1 EP 03788716 A EP03788716 A EP 03788716A EP 03788716 A EP03788716 A EP 03788716A EP 1636033 B1 EP1636033 B1 EP 1636033B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pad printing
- printing system
- ink
- sleeve
- rotary pad
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- 238000007649 pad printing Methods 0.000 title claims abstract description 66
- 238000007639 printing Methods 0.000 title claims abstract description 33
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- 238000004519 manufacturing process Methods 0.000 claims description 42
- 229910000831 Steel Inorganic materials 0.000 claims description 9
- 239000010959 steel Substances 0.000 claims description 9
- 239000000919 ceramic Substances 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 6
- 229910052751 metal Inorganic materials 0.000 claims description 6
- 229920001296 polysiloxane Polymers 0.000 claims description 6
- 229920001971 elastomer Polymers 0.000 claims description 5
- 239000005060 rubber Substances 0.000 claims description 5
- 239000004411 aluminium Substances 0.000 claims description 4
- 229910052782 aluminium Inorganic materials 0.000 claims description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 4
- 230000001413 cellular effect Effects 0.000 claims description 4
- 229920002379 silicone rubber Polymers 0.000 claims description 4
- 239000004945 silicone rubber Substances 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 3
- 239000004677 Nylon Substances 0.000 claims description 2
- 239000004020 conductor Substances 0.000 claims description 2
- 239000004744 fabric Substances 0.000 claims description 2
- 229920001778 nylon Polymers 0.000 claims description 2
- 229920002994 synthetic fiber Polymers 0.000 claims description 2
- 239000001828 Gelatine Substances 0.000 claims 1
- 229910010293 ceramic material Inorganic materials 0.000 claims 1
- 229920000159 gelatin Polymers 0.000 claims 1
- 235000019322 gelatine Nutrition 0.000 claims 1
- 238000007790 scraping Methods 0.000 claims 1
- 239000007779 soft material Substances 0.000 claims 1
- 239000000976 ink Substances 0.000 description 79
- 239000002904 solvent Substances 0.000 description 29
- 238000007647 flexography Methods 0.000 description 6
- 239000007787 solid Substances 0.000 description 6
- 230000008020 evaporation Effects 0.000 description 5
- 238000001704 evaporation Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 239000000428 dust Substances 0.000 description 3
- 238000003912 environmental pollution Methods 0.000 description 3
- 238000004880 explosion Methods 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 239000005030 aluminium foil Substances 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 239000003086 colorant Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000000123 paper Substances 0.000 description 2
- 239000002985 plastic film Substances 0.000 description 2
- 229920006255 plastic film Polymers 0.000 description 2
- 231100000614 poison Toxicity 0.000 description 2
- 239000003440 toxic substance Substances 0.000 description 2
- 239000004952 Polyamide Substances 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
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- 230000007613 environmental effect Effects 0.000 description 1
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- 229920002647 polyamide Polymers 0.000 description 1
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- 239000013585 weight reducing agent Substances 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F17/00—Printing apparatus or machines of special types or for particular purposes, not otherwise provided for
- B41F17/24—Printing apparatus or machines of special types or for particular purposes, not otherwise provided for for printing on flat surfaces of polyhedral articles
- B41F17/26—Printing apparatus or machines of special types or for particular purposes, not otherwise provided for for printing on flat surfaces of polyhedral articles by rolling contact
Definitions
- This invention relates to a rotary pad printing system for printing objects of limited flexibility, inter alia of the board, profile, ceramic tile, type etc. Under objects of limited flexibility should be classified objects which cannot be rolled up, in contrast to fully flexible objects for which this can be done.
- an engraved roller 1 which is fixed to a rotation shaft, is inked with the aid of an open inking system by rotation of the engraved roller through an ink bath 3a, after which the excess ink is scraped off with the aid of a doctor blade 3b.
- the desired pattern is then offset via the pad printing cylinder 2, by off-rolling, onto the print object 5.
- the pad is cleaned with the aid of an open pad clean-wipe system.
- Solvent is applied via a rotating cylinder 4b to the pad printing cylinder 2, after which the excess ink and the added solvent are scraped off by the doctor blade 4c.
- the engraved roller 1 and the pad printing cylinder 2 are cylinders fixedly mounted on the shaft. Two combinations are possible. In the printing method known as indirect gravure, the engraved roller appears with the engraving of the desired image. The pad printing roller must in this case transfer the pattern in its entirety to the print object.
- an inking roller appears with a uniform inking.
- This system allows the whole cylinder to ink, after which an engraved printing cylinder formed specifically in the shape of the pattern only translates the desired pattern to the print object.
- the engraved roller is inked by an inking roller and the desired pattern is placed onto the print object directly by the engraved roller.
- direct gravure the image engraved on the engraved roller is placed directly onto the print object, and the inking is made directly on same roller, without an additional inking cylinder.
- Document US A 6 029 573 discloses an inking station adapted to ink a roller for a flexography printing machine, capable of changing easily the inking mode without having to change the inking cylinder.
- Document DE 195 36 765 A1 discloses another inking station adapted to ink a roller for a flexography printing machine, built in a very compact way in order to be make it easily replaceable when the inking mode has to be changed.
- Document DE 36 33 155 discloses a flexography printing cylinder with a removable sleeve, the inner layer thereof consisting of a metal sheet bent into almost a cylinder, the two ends of which are connected by the outer layer made of plastic or rubber, This solution introduces a discontinuity in the sleeve, contentrating the deformation in the very connection. As a consequence the removal of the sleeve is quite difficult
- the object of the present invention is to overcome the aforesaid drawbacks and deficiencies of the state of the art for printing objects of limited flexibility.
- the main measure taken to offer a solution according to the invention is defined in the claim 1.
- the existing impression cylinder fixedly mounted on the shaft is replaced by the combination of a core fixedly mounted on the shaft with, round said core, a removable sleeve to which the screen can be fitted.
- the weight of the cylinder to be removed is hereby, advantageously, significantly reduced.
- the pad printing cylinder fixedly mounted on the shaft is replaced by the combination of a further core fixedly mounted on the shaft with, around said core, a further removable sleeve.
- the system according to the invention consists of two parts: the core fixedly mounted on the shaft and the easily removable sleeve.
- each sleeve is elastically deformable as a whole
- said sleeve is elastically deformable as a whole from a slightly oval shape to a circular shape so that it can be slid around a core, and back to a slightly oval shape so that it is fastened to the core by pinching.
- the sleeve system according to the invention offers the following advantages over the existing systems.
- the weight problem of the engraved roller is eliminated.
- both pad printing cylinder and/or engraved roller can be reduced by up to a factor of approximately 40 in the first instance, and even further, up to a factor of approximately 200 in the second instance.
- This also explains, at the same time, why a special tool is no longer required when replacing the cylinders or resetting the machines. This constitutes a considerable advantage in the use of such systems, thanks to the simplification and greater flexibility which is herewith obtained by virtue of the invention.
- the screen no longer needs to be attached to a heavy engraved roller, but to a thin sleeve which can be slipped over the core. This makes it easier to maintain and reset the machine and reduces the cost price in connection with transportation.
- the solid engraved roller is also replaced by a sleeve, preferably having a limited quantity of silicone rubber, with the same associated advantages.
- the minimal ink store within the system is of such a size that the system is unprofitable for small production sizes. There are therefore a number of drawbacks associated with the open inking system.
- inking system according to the invention consist in the fact that it is dust-free in the sense that no dust can find its way into the ink reservoir and also that there is less evaporation of solvents, resulting in lower environmental pollution, lower use of solvents, yielding lower production costs, better control of viscosity - with improved constant viscosity - and hence of print quality, and a lesser risk of explosion, indirectly resulting in the use of cheaper electrical components, motors, and no further need for special extractor apparatus.
- such a system is suitable for the launch of a small production with a minimal ink store.
- doctor blade chamber can be connected to an extra ink container by means of a diaphragm pump which guarantees the supply, thereby allowing uninterrupted production of large print runs.
- the doctor blade chamber can be provided with an overflow connected to the ink container.
- this can always remain perfectly filled and a permanent ink circulation achieved, whereby the viscosity can be kept constant at all times, resulting in a more uniform print quality.
- Ancillary seals are provided to make the doctor blade chamber ink-tight on the side without a doctor blade in order thereby to combat ink loss.
- These seals consist of a small layer of cellular rubber. Any other material which possesses the same properties in terms of sealing, wear resistance and dimensional stability or elasticity can equally be used, for example a layer of fabric impregnated with oil, preferably felt.
- the closed inking system according to the invention therefore offers a number of advantages over the existing open inking systems, amongst which less environmental pollution, better constant viscosity, smaller minimal ink stores and elimination of dust problems are the most important.
- the closed clean-wipe system has one significant advantage over the known open clean-wipe systems, namely that there is less evaporation of solvents, resulting in lower environmental pollution, a lower use of solvents, resulting in lower production costs, and a lesser risk of explosion, indirectly resulting in the use of cheaper electrical components, motors, and no further need for special extractor apparatus.
- Such a printing system makes it additionally possible to print objects of limited flexibility at a throughput speed which can vary over a wide range: speeds in the order of 5 to 25 meters per minute are possible, just like speeds up to 300 meters per minute.
- the print roller can be used to advance the print object.
- the entire rotary pad printing system which is described below consists substantially of the following principal components: print roller and sleeves, a closed inking system and a closed clean-wipe system, which further consist of the following components as shown in figure 4 : core of the engraved roller 11 a, sleeve with engraving 11 b, core of the pad printing cylinder 12a, sleeve with silicone rubber, constituting the pad 12b, the pad taking up the ink from the engraving at 11, a closed inking system 13, a pad printing cylinder clean-wipe system 14, and a print object 5.
- the arrow designated as F represents the direction of rotation of the engraved roller
- the arrow designated as G represents the direction of rotation of the pad printing cylinder
- arrow H represents the direction of motion of the cleaning cylinder
- E represents the direction of motion of the print object.
- the core of the engraved roller 11 a is fixedly mounted on the rotation shaft. This is represented in figures 5a and 5b .
- the core can consist of a solid steel cylinder as represented in figure 5a . However, other materials are also possible, such as aluminium.
- This embodiment does not differ substantially from an embodiment wherein the solid core, for weight-reduction purposes, is replaced by a tubular structure of the sleeve type, which is fixedly mounted on the rotation shaft.
- the diameter of the core of the engraved roller is matched to the diameter of the associated sleeve.
- a sleeve has typically a diameter of e.g. 236,3 mm with a weight of approximately 150 g.
- the weight is approximately 800 g.
- the solid cylinders in question weight approximately 30 kg.
- the sleeved version thus constitutes a marked reduction in weight, both in relative and in absolute values.
- Figure 6 shows the sleeve as a thin-walled, laminated tube with an engraving, of the colour image 11 b to be printed.
- the wall thickness typically measures less than 1 mm, the innermost layer of which is a thin, preferably metal, support, carrying the layer in which the engraving is made.
- the thickness of the sleeve is typically comprised between 0,5 and 1 mm and it is slipped over the core of the engraved roller. In order to enable this, the sleeve as a whole must be elastically deformable. Clearance can thereby be created relative to the core, allowing easy fitting or removal of the sleeve.
- an engraving having the print pattern for a specific colour is made either by etching, or by engraving or by any other possible method.
- the material of the outer surface can be steel or any other kind of metal, or nylon or any other synthetic material. The most important selection criterion for this material is the desired wear resistance with regard to the wiping. When choosing this material, the desired production size and the associated wear and tear can advantageously be taken into account.
- a doctor blade For wiping off the excess ink on the sleeve, a doctor blade is used.
- the sleeve is as flat as possible in the longitudinal direction.
- a special screen is also preferably used, thereby ensuring continuous contact between sleeve and doctor blade and this for a doctor blade having the required elasticity.
- the core of the impression cylinder 12a is fixedly mounted on the rotation shaft. This is represented by way of example in figures 5a and 5b .
- the core may consist of a solid steel cylinder as represented in figure 5a .
- other materials are also possible, such as aluminium, for example.
- an embodiment is also possible wherein the solid core is replaced by a sleeve-type tubular structure of the sleeve-type, which is fixedly mounted on the rotation shaft as represented on figure 5b in order to reduce the weight.
- the diameter of the core of the impression cylinder is matched to the inner diameter of the associated sleeve.
- Such a sleeve has typically a diameter of e.g. 236,3 mm.
- the sleeve with silicone rubber 12b should also be regarded as a thin-walled, laminated tube.
- the wall thickness typically measures a few centimeters, the innermost layer of which is a thin, preferably metal, support of typically less than 1 mm, with silicone on top as shown in figure 7 .
- This sleeve is slipped over the core of the impression cylinder. In order to enable this, the sleeve as a whole must be elastically deformable. Clearance can thereby be created relative to the core, allowing easy removal or fitting of the sleeve.
- the material of the outer surface of the outer layer is a silicone mixture, the most important criterion for the selection of the material components being the print quality.
- the desired production size and the associated wear and tear which is dependent on the hardness and wearresistance of the silicone, can also advantageously be taken into account.
- composition of the silicone can further also be modified by the addition of electrically conductive materials. This allows the build-up of electrostatic charge in the machine to be averted.
- this sleeve is designed such that the clean-wipe system is fully closed off. To this end, the solvents are not only scraped off from the cylindrical surface, but also from the side face.
- FIG 8 shows the closed ink system 23 consisting of the following functional parts.
- the ink reservoir 21 contains the ink which, through direct contact, finds its way onto the screen sleeve. This can be compared with the principle of the ink bath in existing systems 3a.
- the reservoir 21 has an opening 28 in which the engraved roller with sleeve fits perfectly during production and along which the ink is brought onto the sleeve. This opening lies, for example, in a vertical plane.
- the inking system is advantageously provided with a pump system in order to fill the ink chamber before production and empty it after production. Otherwise, when ink chamber and sleeve are moved away from each other, in the rest state, therefore, ink would find its way into the machine, thereby necessitating time-consuming clean-wipe work.
- a set of doctor blades is provided, which are fastened to the ink chamber by a specific holder 22.
- This doctor blade holder is designed such that the ink chamber is fully closed off when the inking system is pushed against the engraved roller.
- This doctor blade holder ensures that the doctor blades are always correctly mounted, both at an optimal angle and at a suitable distance relative to the sleeve.
- the optimal angle is 30° relative to the tangent to the sleeve.
- This doctor blade holder further allows rapid replacement of the doctor blades.
- a lowermost doctor blade 23 is mounted with the doctor blade holder 22 on the ink reservoir 21, so that, along the bottom side of the opening in the ink reservoir, no ink can leak away.
- a pan 29 is preferably provided to collect the minimized residual ink losses so as to prevent these from finding their way into the machine.
- Said doctor blade 23 consists of a thin steel plate coated with a ceramic layer, or any other combination having the same properties in terms of wiping and wear resistance.
- a second doctor blade 24 wipes the excess ink from the engraved roller, so that only ink in the engraving bearing the desired image for a specific colour is left.
- This doctor blade 24 functionally replaces the doctor blade 1 in known systems.
- the second doctor blade 24 is mounted with the doctor blade holder 22 on the ink reservoir 21, so that, along the top side of the opening 31, no ink can leak away into the ink reservoir.
- the latter doctor blade 24 consists of a thin steel plate coated with a ceramic layer, or any other combination having the same properties in terms of wiping and wear resistance.
- Ancillary seals 25 are provided to make the ink chamber 21 ink-tight on the side without a doctor blade in order thereby to combat ink loss.
- These seals 25 consist of a small layer of cellular rubber with a thickness of approximately 10 mm. Any other material which possesses the same properties in terms of sealing, wear resistance and dimensional stability or elasticity can equally be used.
- an inlet and outlet system 26 is provided, along which the ink can be fed and evacuated.
- a system 26 allows the ink to be continuously pumped round, whereby the viscosity can be continuously controlled in order to keep it constant.
- a quantity of solvent is added, where necessary, to the ink.
- This system 26 is also used to fill the ink reservoir 21 before production and empty it after production. Otherwise, when ink chamber and sleeve are moved away from each other, in the rest state, therefore, quite a quantity of ink would find its way into the machine, thereby necessitating time-consuming clean-wipe work.
- the inking system can be moved in its entirety away from and toward the engraved roller with sleeve, giving rise to two states: a rest state A, far apart, and a production state B, close together.
- Figure 9 shows the closed pad cleaning-wipe system intended to clean the pad printing cylinder 34 consisting of a number of functional parts.
- a reservoir 31 is included herein, the reservoir containing the solvents, which find their way, through direct contact, onto the pad printing cylinder with sleeve.
- the reservoir has an opening 32', in which the pad printing cylinder with sleeve fits perfectly during production and along which the solvents are brought onto the sleeve.
- This opening 32 lies in a vertical plane. Consequently, the clean-wipe system is provided with a pump system (not shown) for filling the reservoir 21 before production and emptying it after production. Otherwise, when reservoir and sleeve are moved away from each other, in the rest state, quite a quantity of solvents would find their way into the machine.
- doctor blades 33, 34 are fastened to the reservoir by a specific holder 32.
- This doctor blade holder 32 is designed such that the reservoir 31 is fully closed off when the clean-wipe system is pushed against the pad printing cylinder with sleeve.
- This doctor blade holder 32 ensures that the doctor blades 33, 34 are always correctly mounted, i.e. at an optimal angle and at an optimal distance to the sleeve.
- This doctor blade holder 32 allows rapid replacement of the doctor blades.
- a lowermost doctor blade 33 is mounted with the doctor blade holder 32 on the reservoir 31, so that, along the bottom side of the opening 32 in the reservoir, no solvents can leak away. Beneath the clean-wipe system there is a pan 39 to collect the minimized residual ink losses so as to prevent these from finding their way into the machine.
- a second doctor blade 34 wipes the solvents off the sleeve, so that a perfectly clean sleeve can accept the print image from the screened sleeve.
- This doctor blade functionally replaces the known doctor blade.
- the second doctor blade 34 is mounted with the doctor blade holder 32 on the reservoir 31, so that, along the top side of the opening in the reservoir, no solvents can leak away.
- Said doctor blades 33, 34 consist of a thin steel plate coated with a ceramic layer or any other combination having the same properties in terms of wiping and wear resistance, such as plastic, for example polyamide.
- Ancillary seals 35 are provided in order to make the reservoir 31 fully seal-tight on the side with no doctor blade. These seals 35 consist of a small layer of cellular rubber or any other material possessing the same properties in terms of sealing, wear resistance and dimensional stability or elasticity. Said seals thus allow solvent loss to be combated.
- an inlet and outlet system 36 is provided, along which the solvents can be fed and evacuated.
- Such a system allows the solvents to be continuously pumped round, and this in order to recycle them as long as possible.
- This system is also used to fill the reservoir before production and to empty it after production. Otherwise, when reservoir and sleeve are moved away from each other, in the rest state, quite a quantity of solvents would find their way into the machine.
- the clean-wipe system can be moved in its entirety from and to the impression cylinder with sleeve, giving rise to the two states : the rest state A, from each other, and the production state B, against each other.
- the print object 15 has to satisfy a number of conditions: the object should be bendable, yet not to the extent that it could be rolled up, for example.
- the object therefore has only limited flexibility.
- Examples of such objects are boards and plastic profiles, inclusive of MDF, aluminium or wood and ceramic tiles.
- the central core of the cylinder is provided with a compressed-air connection.
- the fitting or removal of the sleeve proceeds in the following steps. Under normal circumstances, a sleeve is not perfectly cylindrical but slightly oval. Thus, compressed air is supplied in order to move the sleeve over the core. This produces a film of air between the sleeve and the core, whereby the cross section of the sleeve becomes almost circular. The fact that the diameter of this circle is greater than the shortest axis of the original oval shape enables the sleeve to be taken from the core or slipped over it without additional tools. Once the sleeve has been slipped fully over the core and is installed in its place (locating pin), the compressed air is shut off. Without a film of air, a firm fastening of the sleeve relative to the core is obtained, through the pinching of the oval shape. In addition, this assembly is also very precise. Any displacement during the printing is virtually impossible.
- the operation of the closed inking system is as follows.
- the ink from the ink reservoir finds its way onto the screen or sleeve through direct contact.
- the ink is brought onto the sleeve along the opening in the reservoir in which the engraved roller with sleeve fits perfectly during production. This opening lies in a vertical plane.
- the ink chamber is filled before production and emptied after production by means of the pump system.
- the inking system is pushed against the engraved roller and, with the aid of doctor blade holders and the appropriate doctor blades, the ink chamber is fully closed off.
- doctor blade holders By virtue of these doctor blade holders, the doctor blades are rapidly replaced.
- the second doctor blade in the direction of rotation of the cylinder wipes the excess ink off the engraved roller, so that only ink in the engraving containing the desired image for a specific colour is left.
- the inking system is pressed against the engraved roller with an adjustable pressure force.
- the ink in the ink chamber is kept, during production, constantly above a minimum level higher than the position of the first doctor blade.
- the viscosity of this ink is, moreover, constantly finely adjusted, so that the correct viscosity is maintained at all times, even after extra ink has been added. Consequently, ink and reducer are pumped to the ink chamber in the correct ratio.
- the doctor blade chamber is connected to an additional ink container by means of a diaphragm pump which guarantees the supply.
- the doctor blade chamber is additionally provided with an overflow connected to the ink container, whereby this is always perfectly filled and there is a permanent circulation of ink.
- This pump system is also used to fill the ink reservoir before production and empty it after production.
- the inking system where appropriate, is moved in its entirety from and to the engraved roller with sleeve, giving rise to two states: far apart, the rest state A, and close together, the production state B.
- the solvents find their way through direct contact onto the impression cylinder (sleeve).
- the reservoir has an opening in which the impression cylinder with sleeve fits perfectly during production and along which the solvents are brought onto the sleeve.
- the clean-wipe system should be provided with a pump system in order to fill the reservoir before production and empty it after production.
- the clean-wipe system is pushed against the pad printing cylinder and, with the aid of doctor blade holders and the appropriate doctor blades, the reservoir is fully closed off.
- the clean-wipe system is pressed against the pad printing cylinder with an adjustable pressure force.
- the solvents in the reservoir are kept, during production, constantly above a minimum level higher than the position of the first doctor blade.
- An inlet and outlet system is used to fill the reservoir before production and empty it after production.
- An overflow centrally receives the wiped-off solvents.
- the reservoir is filled before production and emptied after production.
- the clean-wipe system is moved in its entirety from and to the impression cylinder with sleeve, giving rise to two states: a rest state, far apart, and a production state, close together.
Claims (34)
- Système d'impression tampographique rotatif pour imprimer des objets d'une flexibilité limitée comprenant un ensemble de cylindres montés fixement sur des axes de rotation mutuellement parallèles, comprenant un rouleau gravé rotatif et un cylindre tampographique, le rouleau gravé (11) consistant en un corps qui est monté fixé sur l'axe précité (11a) présentant au moins un manchon amovible (11b) autour de celui-ci sur lequel est adapté un écran, d'une part, le cylindre d'impression tampographique (12) consistant en un coeur (12a) qui est monté fixe sur l'axe avec au moins un manchon amovible (12b) autour de celui-ci présentant de la matière sur la couche extérieure de celui-ci permettant de retirer de l'encre dudit rouleau gravé et de déposer ensuite celle-ci sur un objet à imprimer (15), une gravure de l'image à imprimer sur ledit objet (15) étant appliquée sur l'un desdits manchons et chaque manchon (11b, 12b) étant déformable élastiquement dans son ensemble, caractérisé en ce que ledit manchon est déformable élastiquement comme un tout à partir d'une forme légèrement ovale jusqu'à une forme circulaire, de façon qu'il puisse être coulissé autour d'un noyau, et de nouveau à une forme légèrement ovale, de sorte qu'il est attaché au noyau par pincement.
- Système d'impression tampographique rotatif suivant la revendication précédente, caractérisé en ce que ladite matière est une matière souple, en particulier un mélange de silicones, plus particulièrement un caoutchouc de silicones.
- Système d'impression tampographique rotatif suivant la revendication 1, caractérisé en ce que ladite matière est du PVC.
- Système d'impression tampographique rotatif suivant la revendication 1, caractérisé en ce que ladite matière de la couche extérieure est de la gélatine.
- Système d'impression tampographique rotatif suivant l'une des revendications précédentes, caractérisé en ce que des matières conductrices d'électricité sont ajoutées à ladite matière.
- Système d'impression tampographique rotatif suivant l'une des revendications précédentes, caractérisé en ce que le diamètre du noyau de chaque cylindre précité est adapté au diamètre du manchon correspondant.
- Système d'impression tampographique rotatif suivant l'une des revendications précédentes, caractérisé en ce que le noyau a un profilé cylindrique (41).
- Système d'impression tampographique rotatif suivant l'une des revendications précédentes, caractérisé en ce que le noyau a un ne structure tubulaire (42) qui est montée de manière fixe sur l'axe de rotation.
- Système d'impression tampographique rotatif suivant l'une des revendications précédentes, caractérisé en ce que le noyau consiste en un cylindre métallique.
- Système d'impression tampographique rotatif suivant la revendication 9, caractérisé en ce que le noyau est réalisé en acier ou en aluminium.
- Système d'impression tampographique rotatif suivant l'une des revendications précédentes, caractérisé en ce que ledit manchon est réalisé en un tube laminé à paroi mince avec une gravure de l'image désirée avec une couleur spécifique (11 b), dont la couche intérieure est un support mince avec dessus la couche dans laquelle la gravure est appliquée.
- Système d'impression tampographique rotatif suivant la revendication précédente, caractérisé en ce que ledit support est fabriqué en métal.
- Système d'impression tampographique rotatif suivant l'une des revendications précédentes, caractérisé en ce que le manchon (11b) est coulissant sur le noyau (11a) du rouleau gravé.
- Système d'impression tampographique rotatif suivant l'une des revendications précédentes, caractérisé en ce que dans la surface extérieure de la couche extérieure est appliquée une gravure avec l'image à imprimer pour une couleur spécifique.
- Système d'impression tampographique rotatif suivant l'une des revendications précédentes, caractérisé en ce que la matière de la surface extérieure est du métal, en particulier de l'acier.
- Système d'impression tampographique rotatif suivant l'une des revendications 1 à 14, caractérisé en ce que la matière de la surface extérieure est une matière synthétique, en particulier du nylon.
- Système d'impression tampographique rotatif suivant l'une des revendications 1 à 14, caractérisé en ce que la matière de la surface extérieure est un matériau céramique.
- Système d'impression tampographique rotatif suivant l'une des revendications précédentes, caractérisé en ce que le manchon est sensiblement droit suivant la direction longitudinale.
- Système d'impression tampographique rotatif suivant l'une des revendications précédentes, caractérisé en ce qu'il est prévu au moins une racle pour racler le surplus d'encre sur le manchon et en ce que l'écran précité est spécialement prévu pour un contact continu entre le manchon et la racle, la racle possédant l'élasticité requise.
- Système d'impression tampographique rotatif suivant l'une des revendications précédentes, caractérisé en ce qu'il est prévu un système à encre fermé (13) consistant en un réservoir d'encre comprenant de l'encre qui trouve son chemin sur l'écran par contact direct, le réservoir (21) possédant une ouverture (28) dans laquelle le rouleau gravé avec manchon s'adapte pendant la production et le long de laquelle de l'encre est appliquée sur le manchon.
- Système d'impression tampographique rotatif suivant la revendication précédente, caractérisé en ce que le système à encre précité est pourvu d'un système autonome ou manuel, en particulier un système à pompe, pour remplir la chambre à encre avant production et pour la vider après production.
- Système d'impression tampographique rotatif suivant l'une des deux revendications précédentes, caractérisé en ce qu'il est prévu un ensemble de racles qui sont fixées à la chambre à encre au moyen d'une retenue spécifique (22), le moyen de retenue de la racle étant conçu de façon telle que la chambre à encre est complètement fermée lorsque le système à encre est glissé contre le rouleau gravé.
- Système d'impression tampographique rotatif suivant la revendication précédente, caractérisé en ce que le moyen de retenue de la racle est pourvu de racles qui sont montées sous un angle optimal et à une distance adéquate par rapport au manchon.
- Système d'impression tampographique rotatif suivant la revendication précédente, caractérisé en ce que l'angle précité est compris entre 30 et 35° par rapport à la tangente au manchon.
- Système d'impression tampographique rotatif suivant l'une des revendications précédentes 22 à 24, caractérisé en ce qu'une racle inférieure (23) est montée avec la retenue de racle (22) sur le réservoir à encre (21) de façon telle qu'il n'y a aucune fuite d'encre le long du côté inférieur de l'ouverture vers le réservoir à encre et au moyen de laquelle la pénétration de toute souillure sur le manchon dans la chambre à encre est empêchée.
- Système d'impression tampographique rotatif suivant l'une des revendications précédentes 20 à 25, caractérisé en ce qu'il est prévu un récipient collecteur (29) sous le système à encre afin de collecter des fuites d'encre et/ou des résidus de souillure.
- Système d'impression tampographique rotatif suivant l'une des revendications précédentes 20 à 26, caractérisé en ce qu'une deuxième racle (24) racle le surplus d'encre du rouleau gravé de façon telle que seule l'encre située dans la gravure portant l'image désirée pour une couleur spécifique reste.
- Système d'impression tampographique rotatif suivant l'une des revendications précédentes 25 à 27, caractérisé en ce que ladite racle (23) consiste en une mince plaque d'acier enduite d'une couche en céramique.
- Système d'impression tampographique rotatif suivant l'une des revendications précédentes 22 à 24, caractérisé en ce que des étanchéités additionnelles (25) sont prévues pour isoler hermétiquement la chambre à encre (21) de l'encre du côté ne présentant pas de racle, de façon à empêcher une fuite d'encre.
- Système d'impression tampographique rotatif suivant la revendication précédente, caractérisé en ce que ces étanchéités (21) consistent en une couche de caoutchouc cellulaire d'une épaisseur déterminée.
- Système d'impression tampographique rotatif suivant la revendication 29, caractérisé en ce que ces étanchéités (25) consistent en une couche de tissu imprégné d'huile, de préférence du feutre.
- Système d'impression tampographique rotatif suivant l'une des revendications précédentes 20 à 31, caractérisé en ce qu'il est prévu un système d'entrée et de sortie (26) le long duquel l'encre peut être amenée et évacuée et au moyen duquel (26) l'encre est amenée à circuler continuellement.
- Système d'impression tampographique rotatif suivant l'une des revendications précédentes, caractérisé en ce que la forme dudit manchon est conçue de façon telle que le système de nettoyage est complètement fermé.
- Système d'impression tampographique rotatif suivant la revendication précédente, caractérisé en ce que le système de nettoyage est déplaçable dans son ensemble à partir de et jusqu'au cylindre d'impression tampongraphique avec manchon avec un état de repos (A) mutuellement séparé et un état de production (B) mutuellement proche respectivement.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BE2002/0728A BE1015250A6 (nl) | 2002-12-13 | 2002-12-13 | Rotatie tampondruksysteem voor het bedrukken van beperkt buigzame voorwerpen. |
PCT/BE2003/000220 WO2004054806A1 (fr) | 2002-12-13 | 2003-12-15 | Système d'impression à patins rotatifs |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1636033A1 EP1636033A1 (fr) | 2006-03-22 |
EP1636033B1 true EP1636033B1 (fr) | 2011-08-24 |
Family
ID=32513784
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP03788716A Expired - Lifetime EP1636033B1 (fr) | 2002-12-13 | 2003-12-15 | Systeme d'impression rotatifs au tampon pour imprimer un objet d'une flexibilite limitee |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP1636033B1 (fr) |
AT (1) | ATE521473T1 (fr) |
AU (1) | AU2003296297A1 (fr) |
BE (1) | BE1015250A6 (fr) |
ES (1) | ES2372487T3 (fr) |
WO (1) | WO2004054806A1 (fr) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2009121857A1 (fr) * | 2008-04-04 | 2009-10-08 | Akzo Nobel Coatings International B.V. | Procédé d'application de tache |
CN102152613B (zh) * | 2010-10-21 | 2012-09-12 | 佛山国林机电科技有限公司 | 一种全自动袋管印字切管机 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1110727A1 (fr) * | 1999-12-22 | 2001-06-27 | MAN Roland Druckmaschinen AG | Dispositif pour l'alimentation d'un milieu sous pression vers un cylindre porte-plaque ou vers un cylindre porte-blanchet |
EP1225046A1 (fr) * | 2001-01-22 | 2002-07-24 | Heidelberger Druckmaschinen Aktiengesellschaft | Cylindre d'impression destiné à recevoir un manchon d'impression |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3633155A1 (de) * | 1986-09-30 | 1988-04-07 | Saueressig & Co | Druckzylinder, insbesondere fuer das flexodruckverfahren |
DE19536765C2 (de) * | 1995-10-02 | 2000-08-31 | Tampoprint Gmbh | Farbgebersystem für eine Druckmaschine |
US5730048A (en) * | 1997-01-06 | 1998-03-24 | Averill; Michael J. | System for the printing of small flat objects using direct rotary printing apparatus |
FR2764843B1 (fr) * | 1997-06-19 | 1999-08-20 | Martin Sa | Installation d'encrage multifonctionnelle pour une imprimeuse flexographique |
-
2002
- 2002-12-13 BE BE2002/0728A patent/BE1015250A6/nl not_active IP Right Cessation
-
2003
- 2003-12-15 WO PCT/BE2003/000220 patent/WO2004054806A1/fr not_active Application Discontinuation
- 2003-12-15 ES ES03788716T patent/ES2372487T3/es not_active Expired - Lifetime
- 2003-12-15 AU AU2003296297A patent/AU2003296297A1/en not_active Abandoned
- 2003-12-15 EP EP03788716A patent/EP1636033B1/fr not_active Expired - Lifetime
- 2003-12-15 AT AT03788716T patent/ATE521473T1/de not_active IP Right Cessation
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1110727A1 (fr) * | 1999-12-22 | 2001-06-27 | MAN Roland Druckmaschinen AG | Dispositif pour l'alimentation d'un milieu sous pression vers un cylindre porte-plaque ou vers un cylindre porte-blanchet |
EP1225046A1 (fr) * | 2001-01-22 | 2002-07-24 | Heidelberger Druckmaschinen Aktiengesellschaft | Cylindre d'impression destiné à recevoir un manchon d'impression |
Also Published As
Publication number | Publication date |
---|---|
WO2004054806A1 (fr) | 2004-07-01 |
BE1015250A6 (nl) | 2004-12-07 |
ATE521473T1 (de) | 2011-09-15 |
AU2003296297A1 (en) | 2004-07-09 |
ES2372487T3 (es) | 2012-01-20 |
EP1636033A1 (fr) | 2006-03-22 |
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