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EP2093057B1 - Procédé et dispositif d'élimination d'une bande d'estampage usagée - Google Patents

Procédé et dispositif d'élimination d'une bande d'estampage usagée Download PDF

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Publication number
EP2093057B1
EP2093057B1 EP09002166.8A EP09002166A EP2093057B1 EP 2093057 B1 EP2093057 B1 EP 2093057B1 EP 09002166 A EP09002166 A EP 09002166A EP 2093057 B1 EP2093057 B1 EP 2093057B1
Authority
EP
European Patent Office
Prior art keywords
embossing
web
tension
foil web
foil
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.)
Active
Application number
EP09002166.8A
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German (de)
English (en)
Other versions
EP2093057A1 (fr
Inventor
Marc Steuer
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.)
SPM Steuer GmbH and Co KG
Original Assignee
SPM Steuer GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by SPM Steuer GmbH and Co KG filed Critical SPM Steuer GmbH and Co KG
Publication of EP2093057A1 publication Critical patent/EP2093057A1/fr
Application granted granted Critical
Publication of EP2093057B1 publication Critical patent/EP2093057B1/fr
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Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F19/00—Apparatus or machines for carrying out printing operations combined with other operations
    • B41F19/02—Apparatus or machines for carrying out printing operations combined with other operations with embossing
    • B41F19/06—Printing and embossing between a negative and a positive forme after inking and wiping the negative forme; Printing from an ink band treated with colour or "gold"
    • B41F19/064—Presses of the reciprocating type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
    • B41P2219/00—Printing presses using a heated printing foil
    • B41P2219/20—Arrangements for moving, supporting or positioning the printing foil
    • B41P2219/21—Supports for the unwinding roll; Braking devices for the unwinding roll
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
    • B41P2219/00—Printing presses using a heated printing foil
    • B41P2219/20—Arrangements for moving, supporting or positioning the printing foil
    • B41P2219/22—Guiding or tensioning the printing foil
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
    • B41P2219/00—Printing presses using a heated printing foil
    • B41P2219/20—Arrangements for moving, supporting or positioning the printing foil
    • B41P2219/23—Winding up the printing foil

Definitions

  • the invention relates to a method and to a device for disposing of spent embossing film web during operation of an embossing device according to the preamble of claims 1 and 8.
  • a hot embossing device to be embossed material layer, for example, a printing material or a printing substrate by a Carried out embossing gap between an embossing tool carrier device and a counter-pressure element, for. B. an impression cylinder is formed.
  • the embossing tool carrier device carries one or more embossing tools which can be heated during hot stamping by means of a heating device.
  • the embossing tool carrier device can have, for example, a flat shape - in so-called round-flat machines - or a cylindrical shape - in so-called round-round machines or rotary machines.
  • At least one embossing film web is moved by means of a film transport device with a predeterminable by the control of the film transport device web speed through the embossing gap that moves during a stamping interval at the same speed as the material layer to be embossed by the embossing gap.
  • embossing material located on the embossing foil web for example discrete stamping units lying one behind another, such as images, texts and / or holograms, or a part of a color layer or metal layer to be coated, is transferred to the material layer under the action of pressure and temperature.
  • the embossing film web is thereby removed by the film transport device from a normally roll-shaped film supply and moved through the embossing gap, the spent embossing film is carried away and must be disposed of.
  • successive embossing on the substrate have a certain distance from each other. Since it would be uneconomic to maintain the corresponding embossing units or ink layer areas at the same distance on the embossing film web, it is desirable to optimize film consumption that one behind the other to be embossed ink layer areas or consecutive embossing units are closer together on the embossing film than consecutive embossing on the substrate.
  • This goal can be achieved in that the embossing foil web is guided out of the embossing interval slower than the material layer to be embossed, accelerated to material layer speed before the embossing interval and then braked again and possibly also retracted against the main transport direction.
  • the EP 0 718 099 B1 shows by way of example an embossing rotary machine with a film transport device, which such successive acceleration, deceleration, deceleration and retraction phases the embossing foil web with minimal mechanical stress of the usually quite thin and thus sensitive embossing foil web allowed.
  • this hot stamping device the disposal is carried out by the spent stamping foil web is wound on a continuously rotating take-up storage roll.
  • a film loop store is provided, which allows the transition between the discontinuous film web movement in the region of the embossing gap and the continuous winding movement on the take-up reel.
  • the take-up reel needs to be replaced from time to time for an empty reel, causing unwanted machine downtime.
  • EP 0 989 086 B1 is a hot stamping machine with a continuously operating disposal facility known.
  • This has a designed as a suction roller transport roller over which the embossing foil web is guided over a certain angle of wrap, and cooperating with the transport roller mechanical separating device for severing the recorded on the circumference of the transport roller foil web section by means of a cutting blade. Since the embossing foil web is held on both sides of the separation point on the circumference of the transport roller, an undesired reaction of the mechanical cutting process on the film transport through the embossing gap can be prevented. The separated web sections are sucked off via a downstream of the transport roller suction and fed to disposal.
  • the embossing foil web intended for disposal is introduced into a storage chamber via a slip drive belonging to the film transport device, where it forms free-hanging or depositing loops. These form a reservoir for a discontinuous or alternating mode of operation the embossing device.
  • the loops or packs may be cut individually at the disposal facility or wound up at the exit of the storage chamber to form coils.
  • a known embossing device On the waste side, a known embossing device has a disposal device, which operates in the manner of a shredder or document shredder, to which the used web material is fed by means of an upstream conveying station. This has two counter-rotating transport rollers, between which the sheet material is clamped and conveyed through.
  • the conveyor station serves as an intermittently operating pulling device for the film transport, which is always carried out discontinuously with changing speed, but without withdrawal phases in the direction of the conveyor station.
  • the film disposal should be done without adverse effect on the controlled film movement through the embossing gap.
  • the invention provides a method having the features of claim 1 and a disposal device having the features of claim 8.
  • Advantageous developments are specified in the dependent claims. The wording of all claims is incorporated herein by reference.
  • the embossing foil web is removed from a last control device of the film conveying device by means of a tension conveying device connected downstream of the film conveying device, which is designed to generate a pulling force acting on the embossing foil web independently of the direction and magnitude of the web speed of the embossing film web in the same pulling direction, as well as a severing of the embossing foil web in predeterminable time periods downstream of the Gebhold® US, a tension conveying device connected downstream of the film conveying device, which is designed to generate a pulling force acting on the embossing foil web independently of the direction and magnitude of the web speed of the embossing film web in the same pulling direction, as well as a severing of the embossing foil web in predeterminable time periods downstream of the Switzerland adopted outside an engagement region of the Switzerland adopted for generating separated embossing film web sections, which can then be disposed of.
  • the film transport device which is also referred to below as "film plant” has one or more control devices actively involved in the control of the film web movement in order to precisely determine the web speed of the embossing film web in the embossing gap in terms of amount and optionally direction in accordance with a control program.
  • control devices may e.g. the so-called clock rollers (or control rollers) include, which are in slip-free rolling contact with the embossing foil web and are precisely controlled in terms of rotational speed and direction of rotation.
  • control devices can be used with slip drive.
  • a plurality of passive guide means e.g. Deflection rollers and / or Heilumlenkstangen, provided to determine the course of the stamping foil web (s) through the film factory.
  • the Switzerland fundamental task is the (at least one) from the film transport device with varying speed exiting stamping foil web reliable to detect and exert on the embossing foil web a tensile force such that the embossing foil web still has a certain residual web tension even after exiting the film transport device and thus can be transported in an orderly form of the film transport device away.
  • the tension conveying device can be designed such that the tensile force acting continuously or uninterruptedly at any time is less than the tensile forces acting on the embossing film web within the film transporting device, which are responsible for defining the web speed and the web position within the film transporting device.
  • the pulling force of the pulling conveyor acts independently of the direction and amount of the web speed always in the direction of stripping the embossing film from the last control device of the film transport device to ensure an orderly stripping the embossing film without noticeable repercussion on the film transport within the film transport device.
  • the tension conveying device acts on the embossing foil web over a more or less extended engagement region in the web direction.
  • the embossing foil web Downstream of the engagement area, i. on the side facing away from the film factory of the Switzerland Marie, the embossing foil web is severed by measuring and / or control or otherwise defined time intervals by means of a separator, so that separate embossing foil web sections arise, the length of which essentially by the ratio between the global transport speed of the embossing foil web in Direction disposal side and the length of the time intervals between the fauxtrennungs Republicen is defined and can be adjusted accordingly.
  • stamping foil web sections can then be disposed of in different ways.
  • the embossing foil web is phase-wise opposite to the main transport direction and thus counter to the effective direction the tensile force applied by the pulling conveyor retracted by a certain withdrawal distance, whereby the film consumption can be minimized.
  • the length of the engagement region of the Buchani boots is greater than the amount of the maximum retraction distance of the embossing film web.
  • the embossing foil web is conveyed within the tension conveying device by means of a directed gas flow, in particular an air flow, substantially without contact in the pulling direction. Due to the pneumatic application of force, a particularly gentle and gentle pulling of the embossing foil web is possible and a tug on the embossing foil web, which could possibly react on the critical web transport within the film factory, is reliably avoided.
  • the embossing foil web is pressed in the tension conveying device to generate sliding friction against a plane, curved or curved conveying surface that is moved in the pulling direction.
  • Such variants can also be referred to as "slip drive", since the conveying surface at least temporarily, but preferably during the entire conveying time with an excess speed against the embossing foil web moves in the direction of pull, so that phases of static friction can be avoided.
  • This also makes it possible to generate a gentle and tip-free tensile force on the embossing foil web, which remains without noticeable repercussion on the controlled film advance or retraction of the stamping foil web in the film factory.
  • slip drives are used as active control devices in the context of controlling the film movement through the embossing gap
  • slip drives are used as active control devices in the context of controlling the film movement through the embossing gap
  • the forces acting on the embossing foil from the slip drive forces usually can be significantly lower than when used in the context of film transport devices.
  • the severing of the embossing foil web after release from the engagement region of the tension conveying device can take place mechanically, for example with the aid of a cutting blade which is pressed cyclically against a counter element. Shearing cutting by means of a cutting shear or the like is also possible.
  • a non-contact separation device is provided, so that the embossing foil web without contact, ie without mechanical Contact between the stamping foil web and an element of the separating device is severed.
  • no mechanical force is exerted on the embossing foil web during the separation process, so that the promotion of the embossing foil web by the tension conveying device remains unaffected by the separating process.
  • no repercussion of the separation process on the web transport through the embossing gap to be feared.
  • the embossing foil web is melted by means of a locally concentrated heat action along a parting line extending transversely to the web direction, which is possible in the usually relatively thin embossing foil webs with plastic carrier films quickly and using relatively small amounts of heat energy.
  • at least one laser is used whose laser beam is e.g. is guided by movement of the laser and / or by a movable deflection in the manner of a scanner along the parting line. It is also possible to use a hot gas jet device for cutting the embossing foil web, which may be e.g.
  • a thermal cut-through can also be provided by means of a heating wire which can be electrically or otherwise heated and which, during a brief contact with the stamping foil web, introduces the heat energy required to melt the web along the dividing line.
  • the separated embossing foil web sections are first guided via a suction device into a collecting device, which can then be replaced from time to time, even during operation of the embossing device. It is also possible to provide a shredder or another device for dividing the severed stamping foil web sections into smaller, possibly easier to dispose particles. Alternatively or additionally, a baling press or other means for compressing complete embossing film web sections (or comminuted products thereof) may be provided to obtain small volume waste packages. The waste products (embossing foil web sections or parts thereof) of one or more embossing devices can also be disposed of via a central extraction system.
  • An embossing device suitable for carrying out the method has an embossing unit in which an embossing gap is at least temporarily formed between an embossing tool carrier device and a counterpressure element, and a film transport device for transporting at least one stamping film web through the embossing gap with changing web speed, and a disposal device connected downstream of the film transport device for disposing of used embossing foil webs.
  • the disposal device comprises a train conveying device connected downstream of the film transport device for removing at least one embossing film web from a last control device of the film transport device and a separating device connected downstream of the train conveying device for severing the embossing film web in predefinable time periods outside an engagement region of the train conveying device.
  • the separator is usually followed by a disposal unit for disposal of separated embossing foil web sections.
  • the invention also relates to a corresponding disposal device, which may be assembled as a separate module and downstream of the last control device of the film transport device of an embossing device is to be removed in order to deduct spent embossing film web from the last control device in an orderly form.
  • Fig. 1 shows a schematic side view of an embodiment of an embossing device 100, constructed as a round-flat machine and is designed for embossing sheet-like substrate made of paper, cardboard, plastic and / or other flexible sheet material by means of hot stamping.
  • the embossing device 100 also referred to as a hot embossing device, has an embossing unit 102, which comprises an embossing tool carrier device horizontally movably guided on the machine bed 104 of the embossing device and an impression cylinder 108 arranged with a horizontal axis of rotation above the machine bed, between which an embossing gap 110 is temporarily formed during operation of the device when the embossing tool carrier 106 is located in the area below the impression cylinder.
  • an embossing unit 102 which comprises an embossing tool carrier device horizontally movably guided on the machine bed 104 of the embossing device and an impression cylinder 108 arranged with a horizontal axis of rotation above the machine bed, between which an embossing gap 110 is temporarily formed during operation of the device when the embossing tool carrier 106 is located in the area below the impression cylinder.
  • the embossing tool carrier device 106 is reciprocated horizontally by a drive, not shown, along linear guides and is intended to carry replaceable embossing tools or types 107 on its upper side facing the counter-pressure cylinder, which are heated to temperatures above 100 ° C. by means of an integrated electrical heating device can be heated.
  • the material to be printed sheets are held on a supply stack or feed stack 112 shown on the right with the side to be embossed up and are in operation of the embossing device via a oblique feed table 114 supplied to the impression cylinder 108 of the embossing tool in a flaky arrangement.
  • a oblique feed table 114 supplied to the impression cylinder 108 of the embossing tool in a flaky arrangement.
  • gripper systems which are adapted to grasp each leading edge of a sheet and to pull on the surface of the uniformly rotating impression cylinder. During the gripping process, an orientation of the printing material sheet takes place, for example with respect to the leading edge or to certain image layers.
  • the printing material sheet hanging with its front edge on the circumference of the impression cylinder is guided in the rotation direction shown from left to right through the embossing gap and thereby embossed in a manner which will be described later.
  • the embossed material sheet is transferred to the display system 120 shown on the left, which extends with an oblique conveyor to the periphery of the impression cylinder and a gripper system or bands or the like, which convey the printing material sheets sequentially on the discard pile 118.
  • the delivery system is in other embodiments on the same side of the embossing machine as the application system.
  • the surface of the material sheet to be printed When passing through the embossing gap (in the figure from left to right), the surface of the material sheet to be printed has a speed which, depending on the material thickness of the printed sheet, substantially corresponds to the peripheral speed of the lateral surface of the continuously rotating impression cylinder.
  • At least one embossing film web 130, 130 ' is moved through the embossing gap 110 by means of a film transporting device 140 with a changing web speed that can be precisely predetermined by the activation of active control devices of the film transporting device.
  • the very thin embossing foil web usually consists of a relatively tough Plastic carrier film, on the front side 131 of which a layer system with a thermally activatable separating layer, the actual embossing layer (for example ink layer or metal layer or hologram or image or the like) and a thermally activatable hot-melt adhesive layer is applied, which forms the front side of the embossing film web.
  • a layer system with a thermally activatable separating layer for example ink layer or metal layer or hologram or image or the like
  • a thermally activatable hot-melt adhesive layer is applied, which forms the front side of the embossing film web.
  • the web speed of the embossing film web is controlled by control-active control means of the film transport device so that it runs through the embossing gap 110 at the same speed (in terms of amount and direction) with the material layer to be printed during an embossing interval.
  • the linearly displaceable embossing tool carrier device 106 is accelerated from its starting position shown on the left in the direction of the impression cylinder so that the embossing tools 107 also have the same speed during the embossing interval as the material layer to be embossed and the embossing film web guided between the material layer and the embossing tool.
  • the embossing unit is transferred to the material layer to be embossed during the embossing interval under the influence of pressure and temperature.
  • the tool carrier device After the tool carrier device has been moved in the forward direction during the embossing interval synchronously with the material layer and the embossing film web, it is braked after completion of the embossing interval until it reaches the stop position shown on the right in dashed lines.
  • the stop position of the impression cylinder 108 is slightly raised, so that the return of the tool carrier device without contact with the embossing foil web or the impression cylinder is possible.
  • the film transporting device 140 can guide a plurality of adjacent embossing film webs 130, 130 'in parallel, for example 2 or 3 or 4 or 5 or 6.
  • the film transporting device 140 allows the embossing film web to be outside the embossing interval slower than the material layer to be printed, accelerate to material layer speed before the embossing interval and then decelerate again and retract against the main transport direction 149 in a retraction phase.
  • Each embossing film web is fed from a supply roll 141, 141 'shown on the left by a film loop storage 142 via a suction roller 143 rotating against the main transport direction and passive deflection devices (eg air rods or blower tubes and / or deflection rollers) in the direction of the embossing gap 110 and There, via a plurality of passive deflection devices (eg air rods or blower tubes and / or deflection rollers) are guided to a so-called clock roller or control roller 145, which represents the "zero point" of the film web movement within the system of the film transport device.
  • passive deflection devices eg air rods or blower tubes and / or deflection rollers
  • the film web is there, starting from an upstream deflection roller or deflecting over a relatively large wrap angle, for example, between 130 ° and 180 ° over the circumference of the clock roller in the direction of the downstream disposal facility 150 out.
  • the clock rollers or control rollers 145 are controllable with the aid of suitable electromotive drives with respect to the direction of rotation and rotational speed, so suitable for a forward-reverse operation, and are among the control-active control means of the film factory.
  • the control rollers 145 arranged downstream of the embossing gap cooperate with the suction roller 143, which continuously rotates counter to the main transport direction, at the exit of the film loop storage 142 in order to ensure sufficient web tension in the useful region 148 therebetween and to precisely control the film web speed and direction.
  • the suction roller 143 preceding the embossing gap is operated as a traction device with slip drive, which continuously exerts a tensile force in the direction of the film loop accumulator 142, ie against the main transport device 149, on the at least one embossing foil web guided over it.
  • the tensile force is large enough to ensure the web tension in the embossing gap and to effect a return transport of the embossing foil web when the control roller or timing rollers 145 rotate in the counter-clockwise direction, ie in the return transport direction.
  • the tensile force generated by the slip drive 143 is insufficient to overcome the stiction built up between the embossing film web and the tact roller circumference, so that the web position of the embossing film web and its web speed are accurately determined solely by the rotational position and rotational speed of the suction roller 145.
  • the above-described discontinuous movement of the embossing foil web with retraction phases through the embossing gap is thus brought about by the interaction of the clock rollers 145 arranged downstream of the embossing gap with the slip drive 143 arranged upstream of the embossing gap. Since at the same time the unused embossing foil web is fed by the continuously rotating supply rolls 141, 141 ', the degree of filling of the vacuum foil loop store 142 changes, which is in acceleration phases partially emptied with rapid feed of embossing foil web and fills in braking phases and retraction phases of the embossing foil web further. The film loop store thus decouples the side of the continuous film inlet from the region of the discontinuous film web movement between the slip drive 143 and the slip-free control rollers 145.
  • the disposal of the spent embossing foil webs is a challenge, since this should be ideally achieved without the machine downtime caused by the disposal and without the means for disposal in any way on the precisely controlled film transport to work back through the embossing gap.
  • the disposal device 150 comprises a pull conveyor 145 immediately downstream of the Werner
  • the Buchanid 160 which subtracts the at least one embossing foil web from the upstream her last last control device 145 of the film transporting device 140, and one of the Buchani noise 160 downstream separation device 170, which exiting from the Switzerlandani noise (n ) Stamping foil web (s) from time to time severed so that embossing foil web sections of suitable length arise, which can be easily disposed of subsequently.
  • the train conveying device has an inlet side facing the film unit 140 and an outlet side facing the separating device 170 and an intervening, in the exemplary case, rectilinear engagement region 161 in which it acts on the stamped foil web in the sense that the embossing foil web leaves the stamping foil web away from the cycle rollers pulling force arises, which always acts in the same direction of pull 165, namely away from the timing rollers, regardless of the direction and amount of the web speed of the embossing film.
  • the spent embossing foil webs also outside of the controlled movement in the useful region 148, ie downstream of the clock rollers 145, held in an orderly form and under tension and transported away from the film transport device.
  • the tensile force acts uninterrupted or continuous and is less than those forces that would be necessary to deduct the embossing foil web, overcoming the static friction of the circumference of the suction rollers 145.
  • the control rollers 145 reliably shield the critical effective region 148 of the embossing film web movement through the embossing gap from reactions from the region of the disposal device 150.
  • the length of the engagement region 161 in the web direction in this embodiment is greater than the maximum retraction distance by which the embossing film web is retracted during operation of the embossing device.
  • Typical lengths of the engagement region may be, for example, at least 20 cm or at least 30 cm or at least 40 cm or at least 50 cm or more.
  • the separator 170 activating an embossing film web section is activated. This can subsequently be conveyed for example by a suction device 180 in the direction of a shredder 190 or a baling press or another disposal unit for film web sections.
  • the pulling conveyor 260 in FIG Fig. 2 is a non-contact, pneumatic device (air conveyor) without moving Elements designed in which the embossing foil web 130 is conveyed exclusively in the pulling direction 165 by means of a directed air flow.
  • a flat, rectangular housing 261 of the air conveyor 260 a flat conveying channel 262 is formed, in which a plurality of embossing foil webs, for example two, three, four, five, six or more embossing foil webs, are juxtaposed.
  • the conveying channel 262 has a measured perpendicular to the web passage level width of the order of one or a few centimeters and is bounded on both sides by oblique air passages surface nozzle elements 263 which produce obliquely in the conveying direction directed upon application of compressed air air streams on both sides, ie on the front and at the back of the embossing foil web, attack.
  • the embossing foil webs can be conveyed between extensively vortex-free air flows in the pulling direction 165 without the embossing foil webs coming into contact with elements of the tension conveying device.
  • the pneumatically applied tensile forces ensure an orderly guidance of the conveyed film web sections, wherein at the same time the applied tensile forces are so low that no effect on the film web movement through the embossing gap occurs.
  • a slip-drive pull conveyor 360 having a peripheral perforated conveyor 361 with an integrated suction box 362.
  • the suction box generates through the holes of the conveyor belt through a suction force on the embossing foil web, through which the embossing foil web is pressed onto the continuously moving in the pulling direction conveying surface of the conveyor belt.
  • the conveyor belt is moved at an excess speed with respect to the embossing film web in each phase of the operation, so that the embossing film web is conveyed at this device via sliding friction, which acts on a relatively large, flat conveying surface.
  • Fig. 4 shows another variant of a train conveyor 460 with slip drive.
  • a suction roll 461 is provided, which is arranged between two deflection rollers 462, 463, that the (at least one) embossing foil web is passed over a wrap angle of about 90 ° on the cylindrically curved circumference of the suction roll in a suction active area in which the embossing foil web is sucked onto the circumference of the rotating suction roll.
  • the Switzerland tone driven 560 in Fig. 5 is a variant of in Fig. 4 shown Buch occasion adopted with a suction roll 561 and arranged on both sides deflecting means, wherein the downstream deflection device is formed by a pair of counter-rotating conveying brushes 565, which actively contribute to the film transport in Switzerlandraum 165. To avoid film folding, the conveying brushes rotate at an excess speed with respect to the embossing foil webs and also with respect to the suction roller 561.
  • the Switzerland adopted 660 in Fig. 6 is designed as a pure brush conveyor and includes in the example, four pairs each oppositely rotating conveyor brushes 665, which together form a straight conveyor line for each guided through the embossing foil web.
  • the relatively long bristle conveyor brushes exert a continuous, gentle tensile force on the embossing foil web, which acts in the direction of the downstream separating device. However, they also allow a retraction of the embossing foil web against the pulling direction 165th
  • FIGS. 7 to 9 show some examples of embodiments of separating means which cut the embossing film web (s) after exiting the engagement region of the upstream Werner worn at certain time intervals transverse to the longitudinal direction of the embossing foil web (s).
  • a laser 771 which is linearly movable transversely to the transport direction of the film web and emits a laser beam 772 whose radiation energy is sufficient to melt the thin, substantially plastic embossing film web and thereby to separate along a parting line 775 extending transversely to the web direction.
  • several parallel embossing foil webs can be severed in a separating step. Since this thermal separating device operates without contact, no mechanical forces are exerted on the embossing foil web, so that a retroactive effect of the separating process on the film transport through the embossing gap is excluded.
  • the time periods between the separations may be fixed by suitable programming, but it is also possible to control the timing of the separations on the basis of measurements of the passed embossing foil web length. In any case, embossing foil web sections 130A of defined length are produced, which can subsequently be reliably disposed of without great expense.
  • the separator 870 in Fig. 8 has a hot air blower, which emits a finely bundled hot air jet 872 via a nozzle head 871 which can be swiveled about a vertical axis, which transversely sweeps over the embossing foil web during pivoting of the nozzle head and melts along the dividing line produced thereby, so that a severed embossing foil web section 130A is formed. Also in this non-contact variant, a retroactive effect on the film transport in the film factory is excluded.
  • the hot air blower can also be linearly displaceable transversely to the web direction.
  • the laser 771 may be pivotable, e.g. similar as shown for the hot gas blower.
  • the thermal separator 970 in Fig. 9 has an electrically heatable heating wire 971, which is clamped between two synchronously parallel to each other linearly movable bearings 974 so that it extends transversely to the longitudinal direction of the embossing foil web (s) and can be moved substantially in the direction perpendicular to the film web surface.
  • the heating wire is briefly brought along the entire length of the continuous embossing foil web and melts this with short contact contact along the entire parting line, so that a separate embossing foil web portion 130A is formed. Even with this working contact contact variant, no forces acting in the direction of the film web arise.
  • the separating devices are preferably each arranged directly behind the corresponding Werner boots, ie without intermediate deflection, which may be provided, however.
  • the non-contact, pneumatic Werner Cipheral Staver 260 combined with the laser separator 770 or the hot gas separator 870, so is neither for the Switzerland constituent, nor for the separation of a touch contact to the embossing foil required, so that the disposal without any repercussion on the film transport remains.
  • Control device of the film factory can be used in differently structured embossing machines.
  • the embossing machine can be constructed as a pure rotary machine (round-round machine).
  • the disposal facilities can also work together with differently constructed film transport devices.
  • the film work can be constructed substantially as it is in the EP 0 718 099 B1 is shown, namely with the embossing gap downstream traction device with slip drive and a cooperating with the pulling device, the embossing gap upstream controllable film feeding device.
  • the invention can be used in different variants of hot stamping as well as in various cold stamping techniques.

Landscapes

  • Making Paper Articles (AREA)
  • Separation, Sorting, Adjustment, Or Bending Of Sheets To Be Conveyed (AREA)
  • Advancing Webs (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)

Claims (15)

  1. Procédé pour éliminer une bande d'estampage usagée lors du fonctionnement d'un dispositif d'estampage, dans lequel on déplace au moins une bande d'estampage (130, 130') à l'aide d'un dispositif de transport de feuille (140) avec une vitesse de bande variable à travers une fente d'estampage et on l'envoie ensuite à un dispositif d'élimination (150), caractérisé par les étapes suivantes:
    - enlever la bande d'estampage (130, 130') d'un dernier dispositif de commande (145) du dispositif de transport de feuille (140) au moyen d'un transporteur par traction (160) disposé après le dispositif de transport de feuille, qui produit une force de traction agissant sur la bande d'estampage dans la même direction indépendamment de la direction et de la valeur de la vitesse de bande de la bande d'estampage;
    - découper la bande d'estampage à des intervalles de temps prédéfinissables en aval du transporteur par traction à l'extérieur d'une zone d'action (161) du transporteur par traction pour la production de parties de bande d'estampage découpées;
    - éliminer les parties de bande d'estampage découpées.
  2. Procédé selon la revendication 1, dans lequel la force de traction du transporteur par traction (160) est à tout instant inférieure aux forces de traction agissant sur la bande d'estampage à l'intérieur du dispositif de transport de feuille (140).
  3. Procédé selon la revendication 1 ou 2, dans lequel on retire la bande d'estampage (130, 130') d'une certaine distance de retrait en phase contre la force de traction appliquée par le transporteur par traction, dans lequel la valeur de la distance de retrait maximale de la bande d'estampage est en fonctionnement de préférence inférieure à la longueur de la zone d'action (161) du transporteur par traction.
  4. Procédé selon l'une quelconque des revendications 1 à 3, dans lequel on applique la bande d'estampage dans le transporteur par traction (360, 460, 560) sur une surface de transport déplacée dans la direction de traction, qui se déplace dans la direction de traction avec une vitesse excédentaire par rapport à la bande d'estampage, et/ou le transporteur par traction (560, 660) contient au moins une brosse de transport (565, 665) agissant sur la bande d'estampage, dont les poils transmettent à la bande d'estampage une contribution à la force de traction lors de la rotation de la brosse de transport, dans lequel les parties terminales des poils agissant sur la bande d'estampage se déplacent avec une vitesse excédentaire par rapport à la bande d'estampage dans la direction de traction.
  5. Procédé selon l'une quelconque des revendications 1 à 3, dans lequel on transporte la bande d'estampage à l'intérieur du transporteur par traction (260) dans la direction de traction essentiellement sans contact, de préférence au moyen d'un courant de gaz orienté.
  6. Procédé selon l'une quelconque des revendications précédentes, dans lequel on fond la bande d'estampage (130, 130') pour le découpage à l'aide de l'action d'une chaleur localement concentrée le long d'une ligne de découpage s'étendant transversalement à la direction de la bande et/ou dans lequel on découpe la bande d'estampage (130, 130') sans contact lors du découpage.
  7. Procédé selon la revendication 6, dans lequel on utilise pour découper la bande d'estampage un laser (771), dont le faisceau laser (772) est guidé le long de la ligne de découpage (775).
  8. Dispositif d'élimination (150) pour éliminer des bandes d'estampage usagées, qui sortent d'un dispositif de transport de feuille (140) en aval d'un dernier dispositif de commande (145) du dispositif de transport de feuille, caractérisé par un transporteur par traction (160) pouvant être disposé en aval du dernier dispositif de commande (145) d'un dispositif de transport de feuille (140) pour enlever au moins une bande d'estampage du dernier dispositif de commande (145) du dispositif de transport de feuille ainsi que par un dispositif de découpage (170) disposé après le transporteur par traction pour découper la bande d'estampage à des intervalles de temps prédéfinissables à l'extérieur d'une zone d'action (161) du transporteur par traction.
  9. Dispositif d'estampage, en particulier pour la mise en oeuvre du procédé selon l'une quelconque des revendications 1 à 7, avec un mécanisme d'estampage (102), dans lequel une fente d'estampage (110) est formée au moins temporairement entre un dispositif porte-outil d'estampage (106) et un élément de contrepression (108), avec un dispositif de transport de feuille (140) pour le transport d'au moins une bande d'estampage à travers la fente d'estampage avec une vitesse de bande variable, ainsi qu'avec un dispositif d'élimination (150) disposé après le dispositif de transport de feuille pour éliminer des bandes d'estampage usagées, caractérisé en ce que le dispositif d'élimination (150) est réalisé selon la revendication 8.
  10. Dispositif d'estampage selon la revendication 9, dans lequel le dispositif de transport de feuille contient des dispositifs de commande actifs (143, 145), qui sont conçus pour retirer la bande d'estampage d'une certaine distance de retrait en phase contre la force de traction appliquée par le transporteur par traction (160), dans lequel la valeur de la distance de retrait maximale est de préférence inférieure à la longueur de la zone d'action (161) du transporteur par traction.
  11. Dispositif d'estampage selon la revendication 9 ou 10, dans lequel le dernier dispositif de commande du dispositif de transport de feuille présente un rouleau de commande (145) dont le sens de rotation et la vitesse de rotation peuvent être commandés, qui est réalisé de préférence sous la forme d'un rouleau aspirant.
  12. Dispositif d'estampage selon la revendication 9, 10 ou 11, dans lequel le transporteur par traction est réalisé en forme de transporteur par traction opérant essentiellement sans contact, de préférence de transporteur par traction pneumatique (260) pour la production d'un courant de gaz orienté.
  13. Dispositif d'estampage selon la revendication 9, 10 ou 11, dans lequel le transporteur par traction (360, 460, 560) contient au moins un élément de transport (361, 461, 561) avec une surface de transport déplacée dans la direction de traction, sur laquelle la bande d'estampage peut être appliquée, et/ou dans lequel le transporteur par traction (560, 660) contient au moins une brosse de transport rotative (565, 665), dont les poils transmettent à la bande d'estampage une contribution à la force de traction lors de la rotation de la brosse de transport, dans lequel il est prévu de préférence au moins une paire de rouleaux de transport tournant en sens contraire, entre lesquels au moins une bande d'estampage peut être conduite.
  14. Dispositif d'estampage selon l'une quelconque des revendications 9 à 13, dans lequel il est prévu un dispositif de découpage (770, 870) opérant par voie thermique, qui est de préférence conçu de telle manière que la bande d'estampage puisse être fondue à l'aide de l'action d'une chaleur localement concentrée le long d'une ligne de découpage s'étendant transversalement à la direction de la bande.
  15. Dispositif d'estampage selon la revendication 14, dans lequel le dispositif de découpage (770) contient un laser (771), dont le faisceau laser est guidé le long de la ligne de découpage.
EP09002166.8A 2008-02-20 2009-02-17 Procédé et dispositif d'élimination d'une bande d'estampage usagée Active EP2093057B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102008011493A DE102008011493A1 (de) 2008-02-20 2008-02-20 Verfahren zur Entsorgung von verbrauchter Prägefolienbahn sowie Prägevorrichtung mit kontinuierlich arbeitender Entsorgungseinrichtung

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EP2093057A1 EP2093057A1 (fr) 2009-08-26
EP2093057B1 true EP2093057B1 (fr) 2017-07-12

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US (1) US20090211468A1 (fr)
EP (1) EP2093057B1 (fr)
CN (1) CN101513657A (fr)
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ES (1) ES2641589T3 (fr)

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DE202009016310U1 (de) * 2009-12-02 2010-06-02 Vollherbstdruck Gmbh Vorrichtung zum Entfernen von von einem Bedruckstoff nach einem Foliendruck abstehenden Folienteilen
JP4829364B1 (ja) * 2010-05-25 2011-12-07 トタニ技研工業株式会社 製袋機
CN102442562B (zh) * 2010-11-02 2014-06-18 江苏九鼎新材料股份有限公司 一种砂轮增强网片捡拾方法
JP5915577B2 (ja) * 2012-04-18 2016-05-11 コニカミノルタ株式会社 箔転写装置および画像形成システム
JP5915578B2 (ja) * 2012-05-17 2016-05-11 コニカミノルタ株式会社 画像形成システム
CN103276856B (zh) * 2013-04-28 2015-09-16 广西南南铝箔有限责任公司 用于屋顶的铝裙的生产工艺及设备
CZ308622B6 (cs) * 2015-10-09 2021-01-13 ŠKODA JS a.s. Zařízení na likvidaci čidel neutronového toku a/nebo termočlánků
CN105538783B (zh) * 2016-01-29 2018-09-28 苏州华尔美特装饰材料股份有限公司 一种墙纸压花裁切装置
DE102016209328A1 (de) 2016-05-30 2017-11-30 Armin Steuer Folienprägemaschine
CN110228288B (zh) * 2018-03-05 2022-09-16 博斯特（上海）有限公司 吹气装置单元以及烫金模切设备
WO2020186470A1 (fr) * 2019-03-20 2020-09-24 Bobst Mex Sa Presse d'estampage à chaud
DE102020134021B4 (de) * 2020-12-17 2023-03-16 Schobertechnologies GmbH Trennvorrichtung und Verfahren zum bereichsweisen Trennen einer Folienbahn

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US20090211468A1 (en) 2009-08-27
DE102008011493A1 (de) 2009-08-27
CN101513657A (zh) 2009-08-26
ES2641589T3 (es) 2017-11-10
EP2093057A1 (fr) 2009-08-26

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