WO2001043949A1 - Device for fabricating moving widths of plastic film - Google Patents

Device for fabricating moving widths of plastic film Download PDF

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Publication number
WO2001043949A1
WO2001043949A1 PCT/EP2000/012716 EP0012716W WO0143949A1 WO 2001043949 A1 WO2001043949 A1 WO 2001043949A1 EP 0012716 W EP0012716 W EP 0012716W WO 0143949 A1 WO0143949 A1 WO 0143949A1
Authority
WO
WIPO (PCT)
Prior art keywords
energy supply
optics
plastic film
imaging optics
film webs
Prior art date
Application number
PCT/EP2000/012716
Other languages
German (de)
French (fr)
Inventor
Theresa Funke
Günther NEUDERT
Dieter Irsiegler
Otto Zeininger
Christoph Schneider
Original Assignee
Lemo Maschinenbau Gmbh
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 Lemo Maschinenbau Gmbh filed Critical Lemo Maschinenbau Gmbh
Priority to AU30117/01A priority Critical patent/AU3011701A/en
Priority to EP00990750A priority patent/EP1240003A1/en
Publication of WO2001043949A1 publication Critical patent/WO2001043949A1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
    • B29C65/16—Laser beams
    • B29C65/1629—Laser beams characterised by the way of heating the interface
    • B29C65/1648—Laser beams characterised by the way of heating the interface radiating the edges of the parts to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/08—Devices involving relative movement between laser beam and workpiece
    • B23K26/083—Devices involving movement of the workpiece in at least one axial direction
    • B23K26/0838—Devices involving movement of the workpiece in at least one axial direction by using an endless conveyor belt
    • B23K26/0846—Devices involving movement of the workpiece in at least one axial direction by using an endless conveyor belt for moving elongated workpieces longitudinally, e.g. wire or strip material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
    • B29C65/16—Laser beams
    • B29C65/1629—Laser beams characterised by the way of heating the interface
    • B29C65/1632—Laser beams characterised by the way of heating the interface direct heating the surfaces to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
    • B29C65/16—Laser beams
    • B29C65/1629—Laser beams characterised by the way of heating the interface
    • B29C65/1654—Laser beams characterised by the way of heating the interface scanning at least one of the parts to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/112—Single lapped joints
    • B29C66/1122—Single lap to lap joints, i.e. overlap joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B29C66/43—Joining a relatively small portion of the surface of said articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/834—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools moving with the parts to be joined
    • B29C66/8341—Roller, cylinder or drum types; Band or belt types; Ball types
    • B29C66/83411—Roller, cylinder or drum types
    • B29C66/83413—Roller, cylinder or drum types cooperating rollers, cylinders or drums
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
    • B29C65/16—Laser beams
    • B29C65/1603—Laser beams characterised by the type of electromagnetic radiation
    • B29C65/1606—Ultraviolet [UV] radiation, e.g. by ultraviolet excimer lasers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
    • B29C65/16—Laser beams
    • B29C65/1603—Laser beams characterised by the type of electromagnetic radiation
    • B29C65/1612—Infrared [IR] radiation, e.g. by infrared lasers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
    • B29C65/16—Laser beams
    • B29C65/1603—Laser beams characterised by the type of electromagnetic radiation
    • B29C65/1612—Infrared [IR] radiation, e.g. by infrared lasers
    • B29C65/1619—Mid infrared radiation [MIR], e.g. by CO or CO2 lasers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
    • B29C65/16—Laser beams
    • B29C65/1629—Laser beams characterised by the way of heating the interface
    • B29C65/1645—Laser beams characterised by the way of heating the interface heating both sides of the joint, e.g. by using two lasers or a split beam
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
    • B29C65/16—Laser beams
    • B29C65/1687—Laser beams making use of light guides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/739—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/7392—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic
    • B29C66/73921—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic characterised by the materials of both parts being thermoplastics
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/712—Containers; Packaging elements or accessories, Packages
    • B29L2031/7128—Bags, sacks, sachets

Definitions

  • the invention relates to a device for assembling, in particular welding, perforating and / or cutting, moving plastic film webs with a device for supplying energy for heating and for exerting mechanical pressure in the processing area
  • the bottom seams and side seams are formed by welding overlapping foils.
  • a double-layered foil web is joined together by melting and flowing together of the film material.
  • the heat required for melting can be caused by heat conduction, radiation or friction be introduced into the material
  • heatable pressure stamps are used as a tool.
  • the tool serves on the one hand to bring the heat required for melting the film material into the area to be welded
  • the tool serves to compress the films to be welded together during melting so as to Ensure sufficient strength of the weld seams.
  • the suitable pressure stamps can also be used to cut and / or perforate the film webs in the area of the weld seam
  • the film webs are pulled off a roll and discontinuously assembled with the pressure stamp described above.
  • the conventional pressure stamps must have a very high resistance in order to ensure sufficient processing quality.
  • the high resistance of the pressure stamp is achieved through use High-quality steel guaranteed
  • the use of high-quality steel means that the moving masses are relatively large. This limits the number of cycles or number of pieces that can be achieved with conventional devices and methods
  • the object of the invention is to provide a device of the type described at the outset which enables higher processing speeds and larger numbers of pieces in a simple manner and yet ensures a sufficient processing quality
  • the object is achieved in a device for assembling, in particular welding, perforating and / or cutting, moving plastic film webs with a device for supplying energy for heating and for exerting mechanical pressure in the processing area in that at least one separate energy supply device and at least one separate one Means for exerting mechanical pressure are provided, which are suitable for processing continuously moving plastic film webs.
  • the energy supply for increasing the temperature of the material to be processed is separated from the mechanical pressure generation required for welding. This enables continuous processing of the moving plastic film webs the advantage that very high processing speeds can be achieved, especially in comparison with discontinuously working assembly devices for the Machine construction and smooth running, continuous film movement is extremely advantageous
  • a special embodiment of the invention is characterized in that the energy supply device works essentially transversely to the direction of movement of the plastic film webs. It is particularly important that processing can be carried out transversely to the direction of movement despite the continuous movement of the film webs
  • Another particular embodiment of the invention is characterized in that the energy supply device operates essentially along the direction of movement of the plastic film webs.
  • the processing is transverse and along the direction of movement of the Plastic film webs allow any course of welds, perforations or cuts in the film webs.
  • processing can only take place along the direction of movement of the plastic film webs
  • a further special embodiment of the invention is characterized in that the device for exerting mechanical pressure comprises at least one essentially cylindrical body which can be rotated about its longitudinal axis. Contact with the cylindrical body makes it possible to exert mechanical pressure in a particularly simple manner on the continuously moving film web The rotatable mounting of the cylinder-shaped body ensures that the frictional forces between the film web and the cylinder-shaped body are minimal
  • the cylindrical body is formed by a roller or roller.
  • the foils to be welded are printed against one another by running over at least one roller or at least one roller in the tensioned state
  • the device for exerting mechanical pressure comprises at least a pair of rollers between which the plastic film webs are passed.
  • the rollers serve to continuously compress the films in the processing area Warm can be dissipated
  • Another special embodiment of the invention is characterized in that the energy supply device works without contact.This firstly prevents tool wear, which occurs in conventional machining devices due to contact between the tool and the semi-finished product.On the other hand, mechanical damage to the film webs is prevented by the energy supply device.
  • the best way In the continuous running of the film webs, particularly at right angles to supplying energy at certain points, there is a non-contact energy supply.
  • An electrical one is particularly suitable for contactless energy supply or electromagnetic energy supply This has the advantage that the energy required to melt the material can be introduced in the shortest possible time
  • Another particular embodiment of the invention is characterized in that the energy is supplied by electromagnetic radiation with a wavelength between 180 nanometers and 12 micrometers.
  • electromagnetic energy supply options short-wave radiation between ultraviolet and medium-infrared is most favorable because the radiation is conducted and concentrated over certain distances can mean that the energy does not have to be generated directly at the point of use
  • a further special embodiment of the invention is characterized in that the energy supply device is fed by at least one laser.
  • Lasers are best suited for guiding and shaping the beam because they emit bundled radiation which can be focused best.
  • a single laser can be fixed or switchable beam switches operate several energy supply stations
  • a further particular Ausbowungsart the invention is characterized in that the energy supply means is fed 2 laser of at least one CO A C0 2 - laser emits radiation having a wavelength of 10 6 microns
  • This radiation has two advantages First, it is absorbed by all plastics Second, it is by Glass or plexiglass can be easily shielded so that the machine does not have to be optically encapsulated
  • Another special embodiment of the invention is characterized in that the energy supply device is fed by at least one solid-state / half-laser laser system.
  • Solid-state / half-laser systems operate in the near infrared range (approximately 1 ⁇ m). Their advantage is that their radiation is guided in flexible glass fibers The mechanical arrangement of the lasers in relation to the machine is thereby facilitated
  • a further particular embodiment of the invention is characterized in that the energy supply device comprises at least one beam guiding optics in order to direct the electromagnetic radiation into the processing area.
  • Movable and / or rigid beam guiding optics can be used as beam guiding optics - be guided foil webs.
  • a further special embodiment of the invention is characterized in that the imaging optics or beam guiding optics are designed in such a way that a radiation band is generated in the processing area, which extends transversely to the direction of movement of the plastic film webs.
  • the use of such a radiation band is particularly advantageous when producing weld seams transversely to the film running direction, because it enables the entire width of the film web to be irradiated in one switch-on process.
  • a further special embodiment of the invention is characterized in that the imaging optics or beam guiding optics are designed in such a way that a light spot is generated in the processing area with which the plastic film webs can be scanned in any direction.
  • a radiation band is not sufficient for randomly arranged and running weld seams or assemblies.
  • a defined light spot that can be scanned via the film web is preferable. Tilting mirrors or rotating prisms or a combination of these are particularly suitable for scanning.
  • the machining It is important for the machining that the light spot diameters remain essentially the same despite the extended paths to be machined. This can be achieved by large distances between the imaging optics and the processing area, by tracking the imaging optics or by a special shaping of the imaging optics. With a rotating prism e.g. a special shape in a simple manner for the light spot width perpendicular to the assembly direction.
  • the imaging optics or beam guiding optics comprise two rotating prisms or tilting mirrors which are arranged opposite one another.
  • the rotating prism or prisms have several deflecting surfaces. The number of deflecting surfaces on a rotating prism, together with the rotational frequency, determines the shortest possible time intervals between successive welding tracks
  • the beam guidance can also be carried out by at least one optical system attached to a slide
  • the light spot shows strong deviations from the usual rotational symmetry, for example in the direction of assembly, is significantly longer than perpendicular to it, or vice versa
  • FIG. 1 shows an embodiment of an assembly device according to the invention in side view
  • FIG. 2 shows the assembly device from FIG. 1 in a top view
  • Figure 3 shows an embodiment of an energy supply device in a side view
  • FIG. 4 shows a further embodiment of an energy supply device in a side view
  • FIG. 5 shows a light guide device for controlling the energy supply in an assembly device according to the invention
  • Figure 6 shows an embodiment of a packaging device according to the invention for the simultaneous processing of several foils
  • FIG. 7 shows a beam expansion optics for use in an assembly device according to the invention
  • FIG. 1 schematically shows an embodiment of an assembly device according to the invention.
  • a sheet of plastic 1 is continuously drawn off from a roll (not shown) via a pair of feed rollers 2, 3.
  • the direction of removal of the sheet 1 is indicated in FIG. 1 by an arrow 4
  • Two non-contact energy supply devices 5 and 6 are arranged opposite each other on both sides of the film web 1.
  • the two energy supply devices 5 and 6 serve to heat the double-lying film web 1 made of plastic in a linear manner so that they are welded as they pass through the rollers 7, 8
  • a suitable control system ensures that the two foils match each other exactly with their heated points
  • a pair of feed rollers 7 8 are arranged.
  • Arrows 9 and 10 indicate the direction of rotation of the feed rollers 7 and 8.
  • Arrows 11 and 12 indicate that the two feed rollers 7 and 8 exert a compressive force on the film web 1 This ensures that the areas of the film web 1 heated with the aid of the energy supply devices 5 and 6 are pressed together. By pressing the heated areas together, a welded connection is established between the two films lying one above the other.
  • the two feed rollers 7 and 8 can also be designed to be cooled around the To allow heat to be removed from the area processed with the aid of the energy supply devices 5 and 6 Following the preferred pair of rollers 7, 8, two further energy supply devices 13 and 14 are arranged opposite each other on both sides of the film web 1.
  • the two energy supply devices 13 and 14 serve, for example, to carry out a further cutting operation. Depending on the number of cuts to be made, however, the cutting can also be carried out alone with the aid of one of the energy supply devices 13 and 14. Of course, if necessary, more than the energy supply devices 5 6 and 13 14 shown in FIG. 1 can be combined in one assembly device
  • an arrow 16 indicates that the energy supply devices 5 6 and 13 14 are designed to be movable along the film web 1.
  • the energy supply devices can also be moved only by optical beam deflection
  • the manufacturing method according to the invention is influenced by various parameters.
  • the amount of energy introduced into the film web 1 by the energy supply devices 5, 6 and 13, 14 depends, inter alia, on the power of the laser used, the focal length of the optics used and the dwell time of the energy points on the film web 1
  • the quality of the assembled products strongly depends on the contact pressure exerted by the feed rollers 7 and 8 on the film web 1 and the distance between the location of the energy input on the film web 1 and the feed rollers 7, 8.
  • the cooling speed of the material used and the The temperature of the rollers 7 8 and the cooling time play a not inconsiderable role for the processing quality.
  • the aforementioned parameters are related to the take-off speed of the film web 1
  • the angle ⁇ shown in FIG. 2 describes the travel path of the energy supply device 5 or 6 as a function of the film web speed 4 and the residence time of the energy points on the film web 1.
  • the energy supply devices 5 and 6 must be effective in congruent film areas so that the heated areas are pressed together come to school one another
  • the location of the energy reception on the film web 1 can be compared to the film web speed 4. can be varied equally quickly accordingly.
  • the angle ⁇ takes values that approach 90 °
  • FIG. 3 schematically shows an optical arrangement for deflecting laser beams 22 and 23 used for energy input.
  • the laser beams 22 and 23 are guided through lenses 24 and 25 for focusing.
  • the focused laser beams 22 and 23 then strike two rotating prisms 20 and 21 through the beam Rotating prisms 20 and 21 can direct the laser beams 22 and 23 to any points 26 on the film web to be processed.
  • the axes of rotation of the rotating prisms 20 and 21 run perpendicular to the welding path
  • the rotating prisms 20 and 21 in FIG. 3 have a large number of deflecting surfaces. Depending on the application, rotating prisms with only one deflecting surface can also be used. If two weld seams are to be welded at short distances, it is advantageous to use a rotating prism with two deflecting surfaces. Such a rotating prism can be used work with rotational frequencies from 10 to 50 Hz. The deflection or mirror surfaces can also be used to focus the laser beams
  • FIG. 4 shows a film web 1 which is pulled off a roll (not shown) in the direction of an arrow 30.
  • the film web 1 is processed with the aid of a laser beam 22
  • the laser beam 22 is focused at a certain distance from the rotating prism 20.
  • the focus path is indicated by a curve 31.
  • suitable optics By using suitable optics, the influence of the curved focus path on the flat processing surface can be taken into account.
  • Either optics can be used a large focal length can be used at a large distance from the film web, or a correction can be made by appropriate shaping of the reflection surface
  • FIG. 5 shows a prism 33 with cone-shaped deflection surfaces 34.
  • the cone-like surfaces 34 have narrow points in the middle.
  • the focal length is shortest in the middle. This results in a stronger focus transverse to the beam movement direction.
  • the focus points with this solution an elongated shape on that means that the beam dimensions are in focus in the welding direction are larger than perpendicular to it. This leads to an increase in the dwell time of the laser beam in the processing area
  • FIG. 6 shows that, with the aid of laser radiation 42, two different film webs 36 and 37 can also be processed with a single energy supply device.
  • the two film webs 36 and 37 are brought together by two feed rollers 38, 39 and pulled off together, as indicated by an arrow 40 is
  • FIG. 7 shows how laser radiation 47 can be shaped into a light band with the aid of expanding cylinder optics 48 transversely to the film take-off direction.
  • the expanded laser radiation can then be focused, for example, with the aid of another optic 49 on a line transverse to the film web 50

Abstract

The invention relates to a device for fabricating, especially welding, perforating and/or cutting, moving widths of plastic film (1). The inventive device comprises a unit that supplies energy for heating and for exerting a mechanical pressure in the working area. The aim of the invention is to allow higher working speeds and piece numbers. To this end, the device is provided with a least one separate energy supply device (5, 6) and at least one separate device (7, 8) for exerting a mechanical pressure that are adapted to fabricate continuously moving widths of plastic film (1).

Description

B E S C H R E I B U N G DESCRIPTION
Vorrichtung zum Konfektionieren von bewegten KunststofffolienbahnenDevice for the assembly of moving plastic film webs
Technisches GebietTechnical field
Die Erfindung betrifft eine Vorrichtung zum Konfektionieren, insbesondere Schweißen Perforieren und/oder Schneiden, von bewegten Kunststofffolienbahnen mit einer Einrichtung zum Zufuhren von Energie zur Erwärmung und zum Ausüben von mechanischem Druck in dem BearbeitungsbereichThe invention relates to a device for assembling, in particular welding, perforating and / or cutting, moving plastic film webs with a device for supplying energy for heating and for exerting mechanical pressure in the processing area
Stand der TechnikState of the art
Bei der Herstellung von Kunststoffbeuteln oder Kunststoffsacken aus Kunststofffolienbahnen werden die Bodennahte und Seitennahte durch Verschweißen von übereinander liegenden Folien gebildet Beim Verschweißen wird z B eine doppeltliegende Folienbahn durch Aufschmelzen und Ineinanderfließen des Folienwerkstoffs linienformig miteinander verbunden Die zum Aufschmelzen erforderliche Warme kann durch Warmeleitung, Strahlung oder Reibung in das Material eingebracht werdenIn the production of plastic bags or plastic sacks from plastic film webs, the bottom seams and side seams are formed by welding overlapping foils.For example, a double-layered foil web is joined together by melting and flowing together of the film material.The heat required for melting can be caused by heat conduction, radiation or friction be introduced into the material
Bei herkömmlichen Vorrichtungen zum Herstellen von Kunststoffbeuteln oder Kunststoffsacken werden beheizbare Druckstempel als Werkzeug verwendet Das Werkzeug dient einerseits dazu, die zum Aufschmelzen des Folienwerkstoffs erforderliche Warme in den zu verschweißenden Bereich einzubringen Andererseits dient das Werkzeug dazu die zu verschweißenden Folien beim Aufschmelzen zusammenzudrucken, um so eine ausreichende Festigkeit der Schweißnahte zu gewahrleisten Darüber hinaus können die beneizbaren Druckstempel bei einer geeigneten Formgebung auch zum Schneiden und/oder Perforieren der Folienbahnen im Bereich der Schweißnaht verwendet werdenIn conventional devices for the production of plastic bags or plastic sacks, heatable pressure stamps are used as a tool.The tool serves on the one hand to bring the heat required for melting the film material into the area to be welded On the other hand, the tool serves to compress the films to be welded together during melting so as to Ensure sufficient strength of the weld seams. In addition, the suitable pressure stamps can also be used to cut and / or perforate the film webs in the area of the weld seam
Bei herkömmlichen Verfahren zum Herstellen von Kunststoffbeuteln oder Kunststoffsak- ken werden die Folienbahnen von einer Rolle abgezogen und mit dem vorab beschriebenen Druckstempel diskontinuierlich konfektioniert Die herkömmlichen Druckstempel müssen eine sehr hohe Beständigkeit aufweisen, um eine ausreichende Bearbeitungsqualitat zu gewahrleisten Die hohe Beständigkeit der Druckstempel wird durch Verwendung hochwertiger Stahle gewährleistet Die Verwendung hochwertiger Stahle fuhrt jedoch dazu dass die bewegten Massen relativ groß sind Dadurch wird die mit herkömmlichen Vorrichtungen und Verfahren erzielbare Taktzahl bzw Stuckzahl begrenztIn the case of conventional processes for producing plastic bags or plastic bags, the film webs are pulled off a roll and discontinuously assembled with the pressure stamp described above. The conventional pressure stamps must have a very high resistance in order to ensure sufficient processing quality. The high resistance of the pressure stamp is achieved through use High-quality steel guaranteed The use of high-quality steel, however, means that the moving masses are relatively large. This limits the number of cycles or number of pieces that can be achieved with conventional devices and methods
Darstellung der ErfindungPresentation of the invention
Aufgabe der Erfindung ist es, eine Vorrichtung der eingangs geschilderten Art bereitzustellen die auf einfache Art höhere Bearbeitungsgeschwindigkeiten und größere Stuckzahlen ermöglicht und dennoch eine ausreichende Bearbeitungsqualitat gewährleistetThe object of the invention is to provide a device of the type described at the outset which enables higher processing speeds and larger numbers of pieces in a simple manner and yet ensures a sufficient processing quality
Die Aufgabe ist bei einer Vorrichtung zum Konfektionieren insbesondere Schweißen Perforieren und/oder Schneiden, von bewegten Kunststofffolienbahnen mit einer Einrichtung zum Zufuhren von Energie zur Erwärmung und zum Ausüben von mechanischem Druck in dem Bearbeitungsbereich dadurch gelost dass mindestens eine separate Ener- giezufuhreinnchtung und mindestens eine separate Einrichtung zum Ausüben von mechanischem Druck vorgesehen sind, die geeignet sind, kontinuierlich bewegte Kunststofffolienbahnen zu bearbeiten Gemäß der vorliegenden Erfindung wird die Energiezufuhr zur Temperatursteigerung des zu bearbeitetenden Werkstoffs von der zum Verschweißen notwendigen mechanischen Druckerzeugung getrennt Dadurch wird eine kontinuierliche Bearbeitung der bewegten Kunststofffolienbahnen ermöglicht Das liefert den Vorteil, dass sehr hohe Bearbeitungsgeschwindigkeiten realisiert werden können insbesondere im Vergleich mit diskontinuierlich arbeitenden Konfektioniervorrichtungen Für die Maschinenkonstruktion und Laufruhe ist eine kontinuierliche Folienbewegung äußerst vorteilhaftThe object is achieved in a device for assembling, in particular welding, perforating and / or cutting, moving plastic film webs with a device for supplying energy for heating and for exerting mechanical pressure in the processing area in that at least one separate energy supply device and at least one separate one Means for exerting mechanical pressure are provided, which are suitable for processing continuously moving plastic film webs. According to the present invention, the energy supply for increasing the temperature of the material to be processed is separated from the mechanical pressure generation required for welding. This enables continuous processing of the moving plastic film webs the advantage that very high processing speeds can be achieved, especially in comparison with discontinuously working assembly devices for the Machine construction and smooth running, continuous film movement is extremely advantageous
Besondere Ausfuhrungsarten der Erfindung sind in den Unteranspruchen offenbartSpecial embodiments of the invention are disclosed in the subclaims
Eine besondere Ausfuhrungsart der Erfindung ist dadurch gekennzeichnet, dass die Ener- giezufuhreinπchtung im wesentlichen quer zur Bewegungsrichtung der Kunststofffolienbahnen arbeitet Es ist besonders wichtig, dass trotz der kontinuierlichen Bewegung der Folienbahnen eine Bearbeitung quer zur Bewegungsrichtung durchgeführt werden kannA special embodiment of the invention is characterized in that the energy supply device works essentially transversely to the direction of movement of the plastic film webs. It is particularly important that processing can be carried out transversely to the direction of movement despite the continuous movement of the film webs
Eine weitere besondere Ausfuhrungsart der Erfindung ist dadurch gekennzeichnet, dass die Energiezufuhreinrichtung im wesentlichen längs zur Bewegungsrichtung der Kunststofffolienbahnen arbeitet Die Bearbeitung quer und längs zur Bewegungsrichtung der Kunststofffolienbahnen ermöglicht beliebige Verlaufe von Schweißnahten, Perforierungen oder Schnitten in den Folienbahnen Selbstverständlich kann bei speziellen Anwendungen die Bearbeitung auch nur längs der Bewegungsrichtung der Kunststofffolienbahnen erfolgenAnother particular embodiment of the invention is characterized in that the energy supply device operates essentially along the direction of movement of the plastic film webs. The processing is transverse and along the direction of movement of the Plastic film webs allow any course of welds, perforations or cuts in the film webs. Of course, in special applications, processing can only take place along the direction of movement of the plastic film webs
Eine weitere besondere Ausfuhrungsart der Erfindung ist dadurch gekennzeichnet dass die Einrichtung zum Ausüben von mechanischem Druck mindestens einen im wesentlichen zyiinderformigen Korper umfasst, der um seine Langsachse drehbar ist Durch den Kontakt mit dem zyiinderformigen Korper wird auf besonders einfache Art und Weise eine Ausübung von mechanischem Druck auf die kontinuierlich bewegten Folienbahn ermöglicht Durch die drehbare Lagerung des zyiinderformigen Korpers ist gewährleistet, dass die Reibungskräfte zwischen der Folienbahn und dem zyiinderformigen Korper minimalA further special embodiment of the invention is characterized in that the device for exerting mechanical pressure comprises at least one essentially cylindrical body which can be rotated about its longitudinal axis. Contact with the cylindrical body makes it possible to exert mechanical pressure in a particularly simple manner on the continuously moving film web The rotatable mounting of the cylinder-shaped body ensures that the frictional forces between the film web and the cylinder-shaped body are minimal
Eine weitere besondere Ausfuhrungsart der Erfindung ist dadurch gekennzeichnet, dass der zylinderformige Korper von einer Walze oder Rolle gebildet wird Im einfachsten Fall werden die zu verschweißenden Folien dadurch gegeneinander gedruckt, dass sie im gespannten Zustand über mindestens eine Walze oder mindestens eine Rolle laufenAnother particular embodiment of the invention is characterized in that the cylindrical body is formed by a roller or roller. In the simplest case, the foils to be welded are printed against one another by running over at least one roller or at least one roller in the tensioned state
Eine weitere besondere Ausfuhrungsart der Erfindung ist dadurch gekennzeichnet, dass die Einrichtung zum Ausüben von mechanischem Druck mindestens ein Paar Walzen umfasst, zwischen denen die Kunststofffolienbahnen hindurchgefuhrt werden Die Walzen dienen dazu, die Folien im Bearbeitungsbereich kontinuierlich zusammenzudrucken Gleichzeitig kann über die Walzen die zur Bearbeitung erforderliche Warme abgeführt werdenAnother special embodiment of the invention is characterized in that the device for exerting mechanical pressure comprises at least a pair of rollers between which the plastic film webs are passed. The rollers serve to continuously compress the films in the processing area Warm can be dissipated
Eine weitere besondere Ausfuhrungsart der Erfindung ist dadurch gekennzeichnet, dass die Energiezufuhreinrichtung beruhrungslos arbeitet Dadurch wird zum einen ein Werkzeugverschleiß, der bei herkömmlichen Bearbeitungsvorrichtungen durch den Kontakt zwischen Werkzeug und Halbzeug auftritt, vermieden Zum anderen werden mechanische Beschädigungen der Folienbahnen durch die Energiezufuhreinrichtung verhindert Die beste Möglichkeit im kontinuierlichen Lauf der Folienbahnen, insbesondere quer zur Laufrichtung, an bestimmten Stellen Energie zuzuführen, besteht in einer beruhrungslosen Energiezufuhr. Zur beruhrungslosen Energiezufuhr eignet sich besonders eine elektrische bzw elektromagnetische Energiezufuhr Das liefert den Vorteil, dass die zum Aufschmelzen des Werkstoffs erforderliche Energie in kürzester Zeit eingebracht werden kannAnother special embodiment of the invention is characterized in that the energy supply device works without contact.This firstly prevents tool wear, which occurs in conventional machining devices due to contact between the tool and the semi-finished product.On the other hand, mechanical damage to the film webs is prevented by the energy supply device. The best way In the continuous running of the film webs, particularly at right angles to supplying energy at certain points, there is a non-contact energy supply. An electrical one is particularly suitable for contactless energy supply or electromagnetic energy supply This has the advantage that the energy required to melt the material can be introduced in the shortest possible time
Eine weitere besondere Ausfuhrungsart der Erfindung ist dadurch gekennzeichnet dass die Energiezufuhr durch elektromagnetische Strahlung mit einer Wellenlänge zwischen 180 Nanometer und 12 Mikrometer erfolgt Unter den elektromagnetischen Energiezu- fuhrmoglichkeiten ist kurzwellige Strahlung zwischen ultraviolett und mittelinfrarot am gunstigsten weil die Strahlung über gewisse Distanzen geleitet und konzentriert werden kann was bedeutet, dass die Energie nicht unmittelbar am Ort ihrer Anwendung erzeugt werden mussAnother particular embodiment of the invention is characterized in that the energy is supplied by electromagnetic radiation with a wavelength between 180 nanometers and 12 micrometers. Among the electromagnetic energy supply options, short-wave radiation between ultraviolet and medium-infrared is most favorable because the radiation is conducted and concentrated over certain distances can mean that the energy does not have to be generated directly at the point of use
Eine weitere besondere Ausfuhrungsart der Erfindung ist dadurch gekennzeichnet dass die Energiezufuhreinrichtung von mindestens einem Laser gespeist wird Für die Strahl- fuhrung und -formung eignen sich am besten Laser weil diese bereits gebündelte Strahlung emittieren, die am besten fokussiert werden kann Ein einziger Laser kann über feste oder schaltbare Strahlweichen mehrere Energiezufuhrstationen bedienenA further special embodiment of the invention is characterized in that the energy supply device is fed by at least one laser. Lasers are best suited for guiding and shaping the beam because they emit bundled radiation which can be focused best. A single laser can be fixed or switchable beam switches operate several energy supply stations
Eine weitere besondere Ausfuhrungsart der Erfindung ist dadurch gekennzeichnet dass die Energiezufuhreinrichtung von mindestens einem CO2-Laser gespeist wird Ein C02- Laser emittiert Strahlung einer Wellenlange von 10 6 μm Diese Strahlung hat zwei Vorteile Erstens wird sie von allen Kunststoffen absorbiert Zweitens ist sie durch Glas oder Plexiglas leicht abschirmbar, so dass die Maschine nicht optisch gekapselt werden mussA further particular Ausfuhrungsart the invention is characterized in that the energy supply means is fed 2 laser of at least one CO A C0 2 - laser emits radiation having a wavelength of 10 6 microns This radiation has two advantages First, it is absorbed by all plastics Second, it is by Glass or plexiglass can be easily shielded so that the machine does not have to be optically encapsulated
Eine weitere besondere Ausfuhrungsart der Erfindung ist dadurch gekennzeichnet dass die Energiezufuhreinrichtung von mindestens einem Festkorper-/Halbleιter-Lasersystem gespeist wird Festkorper-/Halbleιter-Lasersysteme arbeiten im Nahinfrarotbereich (etwa 1 μm) Ihr Vorteil liegt dann, dass ihre Strahlung in flexiblen Glasfasern gefuhrt werαen kann Dadurch wird die mechanische Anordnung der Laser zur Maschine erleichtertAnother special embodiment of the invention is characterized in that the energy supply device is fed by at least one solid-state / half-laser laser system. Solid-state / half-laser systems operate in the near infrared range (approximately 1 μm). Their advantage is that their radiation is guided in flexible glass fibers The mechanical arrangement of the lasers in relation to the machine is thereby facilitated
Eine weitere besondere Ausfuhrungsart der Erfindung ist dadurch gekennzeichnet dass die Energiezufuhreinrichtung mindestens eine Strahlfuhruπgsoptik umfasst, um die elektromagnetische Strahlung in den Bearbeitungsbereich zu lenken Als Strahlfuhrungsoptik können bewegliche und/oder starre Strahlfuhrungsoptiken eingesetzt werden Über die Strahlfuhrungsoptiken kann die Bearbeitungsstrahlung an beliebige Orte auf den zu bear- beitenden Folienbahnen gelenkt werden.A further particular embodiment of the invention is characterized in that the energy supply device comprises at least one beam guiding optics in order to direct the electromagnetic radiation into the processing area. Movable and / or rigid beam guiding optics can be used as beam guiding optics - be guided foil webs.
Eine weitere besondere Ausführungsart der Erfindung ist dadurch gekennzeichnet, dass die Abbildungsoptik bzw. Strahlführungsoptik so ausgebildet ist, dass im Bearbeitungsbereich ein Strahlungsband erzeugt wird, das sich quer zur Bewequngsrichtung der Kunststofffolienbahnen erstreckt. Insbesondere beim Erzeugen von Schweißnähten quer zur Folienlaufrichtung ist die Verwendung eines solchen Strahlungsbandes vorteilhaft, weil damit in einem Einschaltvorgang die gesamte Breite der Folienbahn bestrahlt werden kann.A further special embodiment of the invention is characterized in that the imaging optics or beam guiding optics are designed in such a way that a radiation band is generated in the processing area, which extends transversely to the direction of movement of the plastic film webs. The use of such a radiation band is particularly advantageous when producing weld seams transversely to the film running direction, because it enables the entire width of the film web to be irradiated in one switch-on process.
Eine weitere besondere Ausführungsart der Erfindung ist dadurch gekennzeichnet, dass die Abbildungsoptik bzw. Strahlführungsoptik so ausgebildet ist, dass im Bearbeitungsbereich ein Lichtfleck erzeugt wird, mit dem die Kunststofffolienbahnen in beliebigen Richtungen abgescannt werden können. Für beliebig angeordnete und verlaufende Schweißnähte bzw. Konfektionierungen reicht ein Strahlungsband nicht aus. Für derartige Anwendungen ist ein definierter Lichtfleck, der über die Folienbahn gescannt werden kann, vorzuziehen. Für das Scannen eignen sich besonders Kippspiegel oder Drehprismen bzw. eine Kombination von diesen. Bei einer Bearbeitung quer zur Bewegungsrichtung der Folienbahnen muß der aus der Folienbewegung resultierende Versatz im Bahnveriauf berücksichtigt werden.A further special embodiment of the invention is characterized in that the imaging optics or beam guiding optics are designed in such a way that a light spot is generated in the processing area with which the plastic film webs can be scanned in any direction. A radiation band is not sufficient for randomly arranged and running weld seams or assemblies. For such applications, a defined light spot that can be scanned via the film web is preferable. Tilting mirrors or rotating prisms or a combination of these are particularly suitable for scanning. When processing transversely to the direction of movement of the film webs, the offset in the web sale resulting from the film movement must be taken into account.
Es ist für die Bearbeitung wichtig, dass trotz der zu bearbeitenden ausgedehnten Bahnen die Lichtfleckdurchmesser im wesentlichen gleich bleiben. Das kann durch große Abstände zwischen Abbildungsoptik und Bearbeitungsbereich, durch ein Nachführen der Abbildungsoptik oder durch eine spezielle Formgebung der Abbildungsoptik erreicht werden. Bei einem Drehprisma kann z.B. eine spezielle Formgebung in einfacher Weise für die Lichtfleckbreite senkrecht zur Konfektionierrichtung erfolgen.It is important for the machining that the light spot diameters remain essentially the same despite the extended paths to be machined. This can be achieved by large distances between the imaging optics and the processing area, by tracking the imaging optics or by a special shaping of the imaging optics. With a rotating prism e.g. a special shape in a simple manner for the light spot width perpendicular to the assembly direction.
Eine weitere besondere Ausführungsart der Erfindung ist dadurch gekennzeichnet, dass die Abbildungsoptik bzw. Strahlführungsoptik zwei Drehprismen oder Kippspiegel umfasst, die gegenüberliegend angeordnet sind. Beim Verschweißen zweier Folien ist es besonders vorteilhaft, wenn beide Folien an den zu verschweißenden Stellen gleichzeitig mit Energie beaufschlagt werden. Eine weitere besondere Ausfuhrungsart der Erfindung ist dadurch gekennzeichnet, dass das bzw die Drehprismen mehrere Ablenkflachen aufweisen Die Zahl der Ablenkflachen an einem Drehprisma bestimmt zusammen mit der Drehfrequenz die kürzest möglichen Zeitabstande zwischen aufeinander folgenden SchweißbahnenAnother special embodiment of the invention is characterized in that the imaging optics or beam guiding optics comprise two rotating prisms or tilting mirrors which are arranged opposite one another. When welding two foils, it is particularly advantageous if both foils are subjected to energy simultaneously at the points to be welded. Another special embodiment of the invention is characterized in that the rotating prism or prisms have several deflecting surfaces. The number of deflecting surfaces on a rotating prism, together with the rotational frequency, determines the shortest possible time intervals between successive welding tracks
Die Strahlfuhrung kann, alternativ zu der Verwendung von Kippspiegeln und Drehprismen auch durch mindestens eine auf einem Schlitten angebrachte Optik erfolgenAs an alternative to the use of tilting mirrors and rotating prisms, the beam guidance can also be carried out by at least one optical system attached to a slide
Bei bestimmten Bearbeitungsvorgangen kann es vorteilhaft sein wenn der Lichtfleck starke Abweichungen von der üblichen Rotationssymmetrie zeigt beispielsweise in Konfektionierrichtung deutlich langer als senkrecht dazu ist oder umgekehrtFor certain processing operations, it can be advantageous if the light spot shows strong deviations from the usual rotational symmetry, for example in the direction of assembly, is significantly longer than perpendicular to it, or vice versa
Kurze Beschreibung der ZeichnungBrief description of the drawing
Weitere Vorteile, Merkmale und Einzelheiten der Erfindung ergeben sich aus den Un- teranspruchen und der nachfolgenden Beschreibung, in der unter Bezugnahme auf die Zeichnungen mehrere Ausfuhrungsbeispiele der Erfindung im Einzelnen beschrieben sind Dabei können die in den Ansprüchen und in der Beschreibung erwähnten Merkmale jeweils einzeln für sich oder in beliebiger Kombination erfindungswesentlich sein In der Zeichnung zeigenFurther advantages, features and details of the invention result from the subclaims and the following description, in which several exemplary embodiments of the invention are described in detail with reference to the drawings. The features mentioned in the claims and in the description can each be used individually for be essential to the invention or in any combination Show in the drawing
Figur 1 eine Ausfuhrungsform einer erfindungsgemaßen Konfektioniervorrichtung in der Seitenansicht,1 shows an embodiment of an assembly device according to the invention in side view,
Figur 2 die Konfektioniervorrichtung aus Figur 1 in der Draufsicht,FIG. 2 shows the assembly device from FIG. 1 in a top view,
Figur 3 eine Ausfuhrungsform einer Energiezufuhreinrichtung in der SeitenansichtFigure 3 shows an embodiment of an energy supply device in a side view
Figur 4 eine weitere Ausfuhrungsform einer Energiezufuhreinrichtung in der Seitenansicht,FIG. 4 shows a further embodiment of an energy supply device in a side view,
Figur 5 eine Lichtleiteinrichtung zur Steuerung der Energiezufuhr in einer erfindungsgemaßen Konfektioniervorrichtung, Figur 6 eine Ausfuhrungsform einer erfindungsgemaßen Konfektioniervorrichtung zur gleichzeitigen Bearbeitung mehrerer Folien, undFIG. 5 shows a light guide device for controlling the energy supply in an assembly device according to the invention, Figure 6 shows an embodiment of a packaging device according to the invention for the simultaneous processing of several foils, and
Figur 7 eine Strahlaufweitungsoptik zur Verwendung in einer erfindungsgemaßen KonfektioniervorrichtungFIG. 7 shows a beam expansion optics for use in an assembly device according to the invention
Wege zur Ausführung der ErfindungWays of Carrying Out the Invention
In Figur 1 ist eine Ausfuhrungsform einer erfindungsgemaßen Konfektioniervorrichtung schematisch dargestellt Eine Folienbahn 1 aus Kunststoff wird über ein Paar Vorzugswalzen 2, 3 von einer (nicht dargestellten) Rolle kontinuierlich abgezogen Die Abzugsrichtung der Folienbahn 1 ist in Figur 1 durch einen Pfeil 4 angedeutetFIG. 1 schematically shows an embodiment of an assembly device according to the invention. A sheet of plastic 1 is continuously drawn off from a roll (not shown) via a pair of feed rollers 2, 3. The direction of removal of the sheet 1 is indicated in FIG. 1 by an arrow 4
Zwei bεruhrungslos arbeitende Energiezufuhrungseinπchtungen 5 und 6 sind auf beiden Seiten der Folienbahn 1 gegenüberliegend angeordnet Die beiden Energiezufuhremrich- tungen 5 und 6 dienen dazu, die doppelt liegende Folienbahn 1 aus Kunststoff linienformig zu erwarmen, so dass sie beim Durchlaufen der Walzen 7, 8 verschweißt werden Durch eine geeignete Steuerung ist sichergestellt, dass die beiden Folien mit ihren erwärmten Stellen genau aufeinanderpassenTwo non-contact energy supply devices 5 and 6 are arranged opposite each other on both sides of the film web 1. The two energy supply devices 5 and 6 serve to heat the double-lying film web 1 made of plastic in a linear manner so that they are welded as they pass through the rollers 7, 8 A suitable control system ensures that the two foils match each other exactly with their heated points
Insbesondere zum Schneiden des Folienwerkstoffs reicht es auch aus, wenn nur eine Energiezufuhreinrichtung auf einer Seite der Folienbahn vorgesehen istIn particular for cutting the film material, it is also sufficient if only one energy supply device is provided on one side of the film web
Im Anschluss an die Energiezufuhreinrichtungen 5 und 6 sind ein Paar Vorzugswalzen 7 8 angeordnet Durch Pfeile 9 und 10 ist die Drehrichtung der Vorzugswalzen 7 und 8 angedeutet Durch Pfeile 1 1 und 12 ist angedeutet, dass die beiden Vorzugswalzen 7 und 8 eine Druckkraft auf die Folienbahn 1 aufbringen Dadurch wird ein Zusammendrucken der mit Hilfe der Energiezufuhreinrichtungen 5 und 6 erwärmten Bereiche der Folienbahn 1 sichergestellt Durch das Zusammendrucken der erwärmten Bereiche kommt eine Schweißverbindung zwischen den beiden ubereinanderliegenden Folien zustande Die beiden Vorzugswalzen 7 und 8 können darüber hinaus gekühlt ausgebildet sein, um den Abtransport von Warme aus dem mit Hilfe der Energiezufuhreiππchtungen 5 und 6 bearbeiteten Bereich zu ermöglichen Im Anschluss an das Vorzugswalzenpaar 7, 8 sind zwei weitere Energiezufuhreinrichtungen 13 und 14 auf beiden Seiten der Folienbahn 1 gegenüberliegend angeordnet Die beiden Energiezufuhreinnchtungen 13 und 14 dienen bspw dazu einen weiteren Schneidvorgang auszufuhren In Abhängigkeit von der Anzahl der durchzuführenden Schnitte kann das Schneiden allerdings auch alleine mit Hilfe einer der Energiezufuhreinnchtungen 13 und 14 durchgeführt werden Selbstverständlich können bei Bedarf auch mehr als die in Figur 1 dargestellten Energiezufuhreinnchtungen 5 6 und 13 14 in einer Konfektioniervorrichtung kombiniert werdenFollowing the energy supply devices 5 and 6, a pair of feed rollers 7 8 are arranged. Arrows 9 and 10 indicate the direction of rotation of the feed rollers 7 and 8. Arrows 11 and 12 indicate that the two feed rollers 7 and 8 exert a compressive force on the film web 1 This ensures that the areas of the film web 1 heated with the aid of the energy supply devices 5 and 6 are pressed together. By pressing the heated areas together, a welded connection is established between the two films lying one above the other. The two feed rollers 7 and 8 can also be designed to be cooled around the To allow heat to be removed from the area processed with the aid of the energy supply devices 5 and 6 Following the preferred pair of rollers 7, 8, two further energy supply devices 13 and 14 are arranged opposite each other on both sides of the film web 1. The two energy supply devices 13 and 14 serve, for example, to carry out a further cutting operation. Depending on the number of cuts to be made, however, the cutting can also be carried out alone with the aid of one of the energy supply devices 13 and 14. Of course, if necessary, more than the energy supply devices 5 6 and 13 14 shown in FIG. 1 can be combined in one assembly device
In der in Figur 2 dargestellten Draufsicht ist durch einen Pfeil 16 angedeutet, dass die Energiezufuhreinnchtungen 5 6 und 13 14 längs zu der Folienbahn 1 verschieboar ausgebildet sind Die Bewegung der Energiezufuhreinnchtungen kann bei der Verwendung eines Lasers auch nur durch optische Strahlablenkung erfolgenIn the plan view shown in FIG. 2, an arrow 16 indicates that the energy supply devices 5 6 and 13 14 are designed to be movable along the film web 1. When using a laser, the energy supply devices can also be moved only by optical beam deflection
Das erfindungsgemaße Konfektionierverfahren wird von verschiedenen Parametern be- einflusst Die von den Energiezufuhreinnchtungen 5, 6 und 13, 14 in die Folienbahn 1 eingebrachte Energiemenge hangt u a ab von der Leistung des verwendeten Lasers, der Brennweite der verwendeten Optik sowie der Verweildauer der Energiepunkte auf der Folienbahn 1 Die Qualität der konfektionierten Produkte hangt stark von dem von den Vorzugswalzen 7 und 8 auf die Folienbahn 1 ausgeübten Anpressdruck sowie dem Abstand des Ortes der Energieeinbringung auf der Folienbahn 1 von den Vorzugswalzen 7, 8 ab Darüber hinaus spielt die Abkuhlgeschwindigkeit des verwendeten Werkstoffs sowie die Temperatur der Walzen 7 8 und die Kuhldauer eine nicht unerhebliche Rolle für αie Bearbeitungsqualitat Selbstverständlich hangen die vorgenannten Parameter mit der Abzugsgeschwindigkeit der Folienbahn 1 zusammenThe manufacturing method according to the invention is influenced by various parameters. The amount of energy introduced into the film web 1 by the energy supply devices 5, 6 and 13, 14 depends, inter alia, on the power of the laser used, the focal length of the optics used and the dwell time of the energy points on the film web 1 The quality of the assembled products strongly depends on the contact pressure exerted by the feed rollers 7 and 8 on the film web 1 and the distance between the location of the energy input on the film web 1 and the feed rollers 7, 8. In addition, the cooling speed of the material used and the The temperature of the rollers 7 8 and the cooling time play a not inconsiderable role for the processing quality. Of course, the aforementioned parameters are related to the take-off speed of the film web 1
Der in Figur 2 dargestellte Winkel α beschreibt den Verfahrweg der Energiezufuhreinnch- tung 5 bzw 6 in Abhängigkeit von der Folienbahngeschwindigkeit 4 sowie der Verweildauer der Energiepunkte auf der Folienbahn 1 Die Energiezufuhreinnchtungen 5 und 6 müssen in deckungsgleichen Folienbereichen wirksam werden, damit beim Zusammendrucken die erwärmten Bereiche übereinander zu hegen kommenThe angle α shown in FIG. 2 describes the travel path of the energy supply device 5 or 6 as a function of the film web speed 4 and the residence time of the energy points on the film web 1. The energy supply devices 5 and 6 must be effective in congruent film areas so that the heated areas are pressed together come to cherish one another
Bei der Verwendung von Laserstrahlen zur Eπergiezufuhrung kann der Ort der Energie- embπngung auf der Folienbahn 1 im Vergleich zur Folienbahngeschwindigkeit 4 ver- gleichsweise schnell variiert werden Demzufolge nimmt der Winkel α in der Praxis Werte an die gegen 90° gehenWhen using laser beams for energy supply, the location of the energy reception on the film web 1 can be compared to the film web speed 4. can be varied equally quickly accordingly. In practice, the angle α takes values that approach 90 °
In Figur 3 ist eine optische Anordnung zum Ablenken von zur Energieeinbringung verwendeten Laserstrahlen 22 und 23 schematisch dargestellt Die Laserstrahlen 22 und 23 werden zum Fokussieren durch Linsen 24 und 25 hindurch geleitet Die fokussierten Laserstrahlen 22 und 23 treffen dann auf zwei Drehprismen 20 und 21 Durcn die Drehprismen 20 und 21 können die Laserstrahlen 22 und 23 zu beliebigen Punkten 26 auf der zu bearbeitenden Folienbahn geleitet werden Die Drehachsen der Drehprismen 20 und 21 verlaufen senkrecht zur SchweißbahnFIG. 3 schematically shows an optical arrangement for deflecting laser beams 22 and 23 used for energy input. The laser beams 22 and 23 are guided through lenses 24 and 25 for focusing. The focused laser beams 22 and 23 then strike two rotating prisms 20 and 21 through the beam Rotating prisms 20 and 21 can direct the laser beams 22 and 23 to any points 26 on the film web to be processed. The axes of rotation of the rotating prisms 20 and 21 run perpendicular to the welding path
Die Drehprismen 20 und 21 in Figur 3 weisen eine Vielzahl von Ablenkflachen auf Je nach Anwendungsfall können auch Drehprismen mit nur einer Ablenkflache verwendet werden Wenn zwei Schweißnahte in kurzen Abstanden geschweißt werden sollen ist es vorteilhaft, ein Drehprisma mit zwei Ablenkflachen zu verwenden Ein derartiges Drehprisma kann mit Drehfrequenzen von 10 bis 50 Hz arbeiten Die Ablenk- bzw Spiegelflachen können auch zum Fokussieren der Laserstrahlen verwendet werdenThe rotating prisms 20 and 21 in FIG. 3 have a large number of deflecting surfaces. Depending on the application, rotating prisms with only one deflecting surface can also be used. If two weld seams are to be welded at short distances, it is advantageous to use a rotating prism with two deflecting surfaces. Such a rotating prism can be used work with rotational frequencies from 10 to 50 Hz. The deflection or mirror surfaces can also be used to focus the laser beams
In Figur 4 ist eine Folienbahn 1 dargestellt, die in Richtung eines Pfeils 30 von einer (nicht dargestellten) Rolle abgezogen wird Die Folienbahn 1 wird mit Hilfe eines Laserstrahls 22 bearbeitet Zu diesem Zweck wird der Laserstrahl 22 mit Hilfe eines Drehprismas 20 abgelenkt das eine Ablenkflache aufweist Der Laserstrahl 22 wird in einem bestimmten Abstand von dem Drehprisma 20 fokussiert Die Fokusbahn ist durch eine Kurve 31 angedeutet Durch die Verwendung einer geeigneten Optik kann der Einfluss der gekrümmten Fokusbahn auf die ebene Bearbeitungsflache berücksichtigt werden Dazu bieten sich zwei Losungen an Entweder können Optiken mit einer großen Brennweite in einem großen Abstand zur Folienbahn verwendet werden, oder es kann eine Korrektur durch eine entsprechende Formgebung der Refiexionsflache erfolgenFIG. 4 shows a film web 1 which is pulled off a roll (not shown) in the direction of an arrow 30. The film web 1 is processed with the aid of a laser beam 22 The laser beam 22 is focused at a certain distance from the rotating prism 20. The focus path is indicated by a curve 31. By using suitable optics, the influence of the curved focus path on the flat processing surface can be taken into account. There are two solutions. Either optics can be used a large focal length can be used at a large distance from the film web, or a correction can be made by appropriate shaping of the reflection surface
In Figur 5 ist ein Prisma 33 mit konusahn chen Ablenkflachen 34 dargestellt Die ko- nusahnlichen Flachen 34 weisen Engstellen in der Mitte auf Das hat zur Folge dass die Brennweite in der Mitte am kürzesten ist Damit wird eine stärkere Fokussierung quer zur Strahlbewegungsrichtung erreicht Der Fokus weist bei dieser Losung eine gestreckte Form auf Das bedeutet, dass die Strahlabmessungen im Fokus in Schweißrichtung großer als senkrecht dazu sind Das fuhrt zu einer Erhöhung der Verweildauer des Laserstrahls im BearbeitungsbereichFIG. 5 shows a prism 33 with cone-shaped deflection surfaces 34. The cone-like surfaces 34 have narrow points in the middle. As a result, the focal length is shortest in the middle. This results in a stronger focus transverse to the beam movement direction. The focus points with this solution an elongated shape on that means that the beam dimensions are in focus in the welding direction are larger than perpendicular to it. This leads to an increase in the dwell time of the laser beam in the processing area
In Figur 6 ist dargestellt, dass mit Hilfe von Laserstrahlung 42 auch zwei verschiedene Folienbahnen 36 und 37 mit einer einzigen Energiezufuhreinrichtung bearbeitet werden können Die beiden Folienbahnen 36 und 37 werden durch zwei Vorzugswalzen 38, 39 zusammengeführt und gemeinsam abgezogen, wie durch einen Pfeil 40 angedeutet istFIG. 6 shows that, with the aid of laser radiation 42, two different film webs 36 and 37 can also be processed with a single energy supply device. The two film webs 36 and 37 are brought together by two feed rollers 38, 39 and pulled off together, as indicated by an arrow 40 is
In Figur 7 ist dargestellt, wie Laserstrahlung 47 mit Hilfe einer aufweitenden Zylinderoptik 48 quer zur Folienabzugsrichtung zu einem Lichtband geformt werden kann Die aufgeweitete Laserstrahlung kann dann bspw mit Hilfe einer weiteren Optik 49 auf einer Linie quer zu der Foiienbahn 50 fokussiert werden FIG. 7 shows how laser radiation 47 can be shaped into a light band with the aid of expanding cylinder optics 48 transversely to the film take-off direction. The expanded laser radiation can then be focused, for example, with the aid of another optic 49 on a line transverse to the film web 50

Claims

P A T E N T A N S P R Ü C H EP A T E N T A N S P R Ü C H E
11
Vorrichtung zum Konfektionieren insbesondere Schweißen Perforieren und/oder Schneiden, von bewegten Kunststofffolienbahnen (1) mit einer Einrichtung zum Zufuhren von Energie zur Erwärmung und zum Ausüben von mechanischem Druck in dem Bearbeitungsbereich, dadurch gekennzeichnet, dass mindestens eine separate Energiezufuhrein- πchtung (5 6) und mindestens eine separate Einrichtung (7, 8) zum Ausüben von mechanischem Druck vorgesehen sind, die geeignet sind, kontinuierlich bewegte Kunststofffolienbahnen (1 ) zu bearbeitenDevice for assembling, in particular welding, perforating and / or cutting, moving plastic film webs (1) with a device for supplying energy for heating and for exerting mechanical pressure in the processing area, characterized in that at least one separate energy supply device (5 6) and at least one separate device (7, 8) for exerting mechanical pressure are provided, which are suitable for processing continuously moving plastic film webs (1)
22
Vorrichtung nach Anspruch 1 , dadurch gekennzeichnet, dass die Energiezufuhreinrichtung (5, 6) im wesentlichen quer zur Bewegungsrichtung der Kunststofffolienbahnen (1) arbeitetDevice according to claim 1, characterized in that the energy supply device (5, 6) works essentially transversely to the direction of movement of the plastic film webs (1)
33
Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Energiezufuhreinrichtung (5, 6) im wesentlichen längs zur Bewegungsrichtung der Kunststofffolienbahnen (1 ) arbeitetDevice according to one of the preceding claims, characterized in that the energy supply device (5, 6) works essentially longitudinally to the direction of movement of the plastic film webs (1)
44
Vorrichtung nach einem der vorhergehenden Ansprüche dadurch gekennzeichnet dass die Einrichtung zum Ausüben von mechanischem Druck mindestens einen im wesentlichen zyiinderformigen Korper (7, 8) umfasst, der um seine Langsachse drehbar istDevice according to one of the preceding claims, characterized in that the device for exerting mechanical pressure comprises at least one essentially cylindrical body (7, 8) which can be rotated about its longitudinal axis
55
Vorrichtung nach einem der vorhergehenden Ansprüche dadurch gekennzeichnet, dass der zylinderformige Korper von einer Walze oder Rolle gebildet wirdDevice according to one of the preceding claims, characterized in that the cylindrical body is formed by a roller or roller
66
Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Einrichtung zum Ausüben von mechanischem Druck mindestens ein Paar Walzen (7, 8) umfasst, zwischen denen die Kunststofffolienbahnen hindurchgefuhrt werden 7Device according to one of the preceding claims, characterized in that the device for exerting mechanical pressure comprises at least a pair of rollers (7, 8), between which the plastic film webs are passed 7
Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Energiezufuhreinrichtung (5 6) beruhrungslos arbeitetDevice according to one of the preceding claims, characterized in that the energy supply device (5 6) works without contact
Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Energiezufuhr über eine elektrische Entladung erfolgtDevice according to one of the preceding claims, characterized in that the energy is supplied via an electrical discharge
99
Vorrichtung nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass die Energiezufuhr elektromagnetisch erfolgtDevice according to one of claims 1 to 7, characterized in that the energy is supplied electromagnetically
1010
Vorrichtung nach Anspruch 9, dadurch gekennzeichnet, dass die Energiezufuhr durch elektromegnetische Strahlung mit einer Wellenlange zwischen 180 Nanometer und 12 Mikrometer erfolgtApparatus according to claim 9, characterized in that the energy is supplied by electromagnetic radiation with a wavelength between 180 nanometers and 12 microns
11.11th
Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Energiezuführeinrichtung (5, 6) von mindestens einem Laser gespeist wirdDevice according to one of the preceding claims, characterized in that the energy supply device (5, 6) is fed by at least one laser
1212
Vorrichtung nach Anspruch 1 1 , dadurch gekennzeichnet, dass die Energiezufuhreinnch- tung (5, 6) von mindestens einem CO2-Laser gespeist wirdDevice according to claim 1 1, characterized in that the energy supply device (5, 6) is fed by at least one CO 2 laser
1313
Vorrichtung nach Anspruch 11 , dadurch gekennzeichnet, dass die Energiezufuhreinnch- tung (5, 6) von mindestens einem Festkorper-/Halbleιter-Lasersystem gespeist wirdDevice according to claim 11, characterized in that the energy supply device (5, 6) is fed by at least one solid-state / semi-laser laser system
1414
Vorrichtung nach einem der Ansprüche 10 bis 13, dadurch gekennzeichnet, dass die Energiezufuhreinrichtung (5, 6) mindestens eine Strahlfuhrungsoptik umfasst, um die elektromagnetische Strahlung in den Bearbeitungsbereich zu lenken Device according to one of claims 10 to 13, characterized in that the energy supply device (5, 6) comprises at least one beam guiding optics in order to direct the electromagnetic radiation into the processing area
15.15th
Vorrichtung nach einem der Ansprüche 10 bis 13, dadurch gekennzeichnet, dass die Energiezuführeinrichtung (5, 6) mindestens eine Abbildungsoptik umfasst, um die elektromagnetische Strahlung im Bearbeitungsbereich zu fokussieren.Device according to one of claims 10 to 13, characterized in that the energy supply device (5, 6) comprises at least one imaging optics in order to focus the electromagnetic radiation in the processing area.
16.16th
Vorrichtung nach einem der Ansprüche 10 bis 13, dadurch gekennzeichnet, dass die Energiezuführeinrichtung (5, 6) mindestens eine Abbildungsoptik umfasst, um die elektromagnetische Strahlung in den Bearbeitungsbereich zu lenken und im Bearbeitungsbereich zu fokussieren.Device according to one of claims 10 to 13, characterized in that the energy supply device (5, 6) comprises at least one imaging optics in order to direct the electromagnetic radiation into the processing area and to focus in the processing area.
17.17th
Vorrichtung nach einem der Ansprüche 14 bis 16, dadurch gekennzeichnet, dass die Abbildungsoptik bzw. Strahlführungsoptik so ausgebildet ist, dass im Bearbeitungsbereich ein Strahlungsband erzeugt wird, das sich quer zur Bewegungsrichtung der Kunststofffolienbahnen (1) erstreckt.Device according to one of claims 14 to 16, characterized in that the imaging optics or beam guiding optics are designed such that a radiation band is generated in the processing area, which extends transversely to the direction of movement of the plastic film webs (1).
18.18th
Vorrichtung nach einem der Ansprüche 14 bis 16, dadurch gekennzeichnet, dass die Abbildungsoptik bzw. Strahlführungsoptik so ausgebildet ist, dass im Bearbeitungsbereich ein Lichtfleck erzeugt wird, mit dem die Kunststofffolienbahnen in beliebigen Richtungen abgescannt werden können.Device according to one of claims 14 to 16, characterized in that the imaging optics or beam guidance optics are designed such that a light spot is generated in the processing area with which the plastic film webs can be scanned in any direction.
19.19th
Vorrichtung nach Anspruch 18, dadurch gekennzeichnet, dass die Abbildungsoptik bzw.Apparatus according to claim 18, characterized in that the imaging optics or
Strahlführungsoptik mindestens einen Kippspiegel umfasst.Beam guiding optics comprises at least one tilting mirror.
20.20th
Vorrichtung nach Anspruch 18, dadurch gekennzeichnet, dass die Abbildungsoptik bzw.Apparatus according to claim 18, characterized in that the imaging optics or
Strahlführungsoptik mindestens ein Drehprisma umfasst.Beam guiding optics comprises at least one rotating prism.
21.21st
Vorrichtung nach Anspruch 18, dadurch gekennzeichnet, dass die Abbildungsoptik bzw.Apparatus according to claim 18, characterized in that the imaging optics or
Strahlführungsoptik mindestens einen Kippspiegel und ein Drehprisma umfasst. 22Beam guiding optics comprises at least one tilting mirror and a rotating prism. 22
Vorrichtung nach einem der Ansprüche 18 bis 21 , dadurch gekennzeichnet, dass die Ab- bildungsoptik in einem relativ großen Abstand zum Bearbeitungsbereich angeordnet istDevice according to one of claims 18 to 21, characterized in that the imaging optics are arranged at a relatively large distance from the processing area
2323
Vorrichtung nach einem der Ansprüche 18 bis 21 dadurch gekennzeichnet, dass die Ab- bildungsoptik so bewegt wird und/oder so eine Form aufweist dass die Abmessungen des bewegten Lichtflecks im Bearbeitungsbereich im wesentlichen gleich bleibenDevice according to one of claims 18 to 21, characterized in that the imaging optics is moved and / or has a shape such that the dimensions of the moving light spot in the processing area remain substantially the same
2424
Vorrichtung nach einem der Ansprüche 18 bis 23, dadurch gekennzeichnet, dass die Ab- bildungsoptik bzw Strahlfuhrungsoptik zwei Drehprismen (20 21 ) umfasst, die gegenüberliegend angeordnet sindDevice according to one of claims 18 to 23, characterized in that the imaging optics or beam guiding optics comprises two rotating prisms (20 21) which are arranged opposite one another
2525
Vorrichtung nach einem der Ansprüche 18 bis 24, dadurch gekennzeichnet, dass das bzw die Drehprismen (20, 21 ) mehrere Ablenkflachen aufweisenDevice according to one of claims 18 to 24, characterized in that the or the rotating prisms (20, 21) have a plurality of deflection surfaces
2626
Vorrichtung nach einem der Ansprüche 14 bis 25, dadurch gekennzeichnet, dass zumindest ein Teil der Strahlfuhrungs- und Abbildungsoptik an einem Schlitten montiert ist, der im wesentlichen quer zur Bewegungsrichtung der Kunststofffolienbahnen (1 ) beweglich istDevice according to one of claims 14 to 25, characterized in that at least part of the beam guiding and imaging optics is mounted on a carriage which is movable essentially transversely to the direction of movement of the plastic film webs (1)
2727
Vorrichtung nach einem der Ansprüche 14 bis 26, dadurch gekennzeichnet, dass die Abbildungsoptik bzw Strahlfuhrungsoptik so ausgebildet ist, dass die Fokusflache in Konfektionierrichtung langer oder kurzer als quer zur Konfektionierrichtung istDevice according to one of claims 14 to 26, characterized in that the imaging optics or beam guiding optics are designed such that the focus surface in the assembly direction is longer or shorter than transverse to the assembly direction
2828
Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass zwei Abbildungsoptiken bzw Strahlfuhrungsoptiken gegenüberliegend auf beiden Seiten der Folienbahnen angeordnet sind, wobei durch eine geeignete Steuerung sichergestellt ist, dass die Bearbeitungsstellen der Folienbahnen genau übereinander liegen Device according to one of the preceding claims, characterized in that two imaging optics or beam guiding optics are arranged opposite one another on both sides of the film webs, with a suitable control ensuring that the processing points of the film webs lie exactly one above the other
PCT/EP2000/012716 1999-12-17 2000-12-14 Device for fabricating moving widths of plastic film WO2001043949A1 (en)

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DE19961361A DE19961361A1 (en) 1999-12-17 1999-12-17 Device for the assembly of moving plastic film webs
DE19961361.3 1999-12-17

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003045668A1 (en) * 2001-11-27 2003-06-05 C. F. Ploucquet Gmbh & Co. Method and device for producing a fluid-tight connection of layers of material and corresponding sealing
EP1366890A1 (en) * 2002-05-16 2003-12-03 Leister Process Technologies Proces and apparatus for joining of synthetic materials at high welding speed
WO2010049493A1 (en) * 2008-10-31 2010-05-06 Getinge La Calhene Method and device for making a bag
EP2047969A3 (en) * 2007-10-09 2010-09-22 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Method and device for welding at least two positions of a polymer material with laser radiation
US8814430B2 (en) 2010-02-23 2014-08-26 Kraft Foods R&D, Inc. Food package having opening feature

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008023963A1 (en) * 2008-05-16 2009-12-10 Tyco Electronics Raychem Gmbh Laser beam absorbing support helix and method and apparatus for making the same
EP2289660B1 (en) * 2009-08-27 2015-03-18 Vektor Pharma TF GmbH Device and process of cutting TDS and ODF materials with two pairs of advancing rolls

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1500197A (en) * 1965-08-20 1967-11-03 Windmoeller & Hoelscher Radiation welding method and device
FR2267870A1 (en) * 1974-04-16 1975-11-14 Ici Ltd
US4069080A (en) * 1976-06-11 1978-01-17 W. R. Grace & Co. Method and apparatus of bonding superposed sheets of polymeric material in a linear weld
EP0483569A1 (en) * 1990-10-29 1992-05-06 Fmc Corporation Plastic welding apparatus
JPH04255326A (en) * 1991-02-06 1992-09-10 Mitsubishi Plastics Ind Ltd Sealing method for back-bonding
US5279693A (en) * 1990-05-09 1994-01-18 Lps Industries, Inc. Welding thermoplastic material with a laser
DE19516726A1 (en) * 1995-05-06 1996-11-07 Rovema Gmbh Fast hermetic sealing of cardboard boxes using infra-red laser energy directed by mirrors
EP0773164A1 (en) * 1995-11-07 1997-05-14 AZIONARIA COSTRUZIONI MACCHINE AUTOMATICHE-A.C.M.A.-S.p.A. Method and equipment for the sealing of a film of wrapping material
JPH1035621A (en) * 1996-07-23 1998-02-10 Kao Corp Method and device for making bag

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3528867A (en) * 1966-08-15 1970-09-15 Heller William C Jun Method for selective heat sealing or joining of materials
US4847462A (en) * 1986-11-06 1989-07-11 American Fluoroseal Corporation Method and apparatus for making fluorocarbon film plastic bags using a laser
DE4409255A1 (en) * 1994-03-18 1995-09-21 Rovema Gmbh Folded carton for e.g. liq. and powder prods.
DE19746402A1 (en) * 1997-10-21 1999-04-22 Fresenius Medical Care De Gmbh Method and device for welding plastic films, preferably polyolefin films

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1500197A (en) * 1965-08-20 1967-11-03 Windmoeller & Hoelscher Radiation welding method and device
FR2267870A1 (en) * 1974-04-16 1975-11-14 Ici Ltd
US4069080A (en) * 1976-06-11 1978-01-17 W. R. Grace & Co. Method and apparatus of bonding superposed sheets of polymeric material in a linear weld
US5279693A (en) * 1990-05-09 1994-01-18 Lps Industries, Inc. Welding thermoplastic material with a laser
EP0483569A1 (en) * 1990-10-29 1992-05-06 Fmc Corporation Plastic welding apparatus
JPH04255326A (en) * 1991-02-06 1992-09-10 Mitsubishi Plastics Ind Ltd Sealing method for back-bonding
DE19516726A1 (en) * 1995-05-06 1996-11-07 Rovema Gmbh Fast hermetic sealing of cardboard boxes using infra-red laser energy directed by mirrors
EP0773164A1 (en) * 1995-11-07 1997-05-14 AZIONARIA COSTRUZIONI MACCHINE AUTOMATICHE-A.C.M.A.-S.p.A. Method and equipment for the sealing of a film of wrapping material
JPH1035621A (en) * 1996-07-23 1998-02-10 Kao Corp Method and device for making bag

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 017, no. 034 (M - 1357) 22 January 1993 (1993-01-22) *
PATENT ABSTRACTS OF JAPAN vol. 1998, no. 06 30 April 1998 (1998-04-30) *

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003045668A1 (en) * 2001-11-27 2003-06-05 C. F. Ploucquet Gmbh & Co. Method and device for producing a fluid-tight connection of layers of material and corresponding sealing
EP1366890A1 (en) * 2002-05-16 2003-12-03 Leister Process Technologies Proces and apparatus for joining of synthetic materials at high welding speed
EP2047969A3 (en) * 2007-10-09 2010-09-22 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Method and device for welding at least two positions of a polymer material with laser radiation
WO2010049493A1 (en) * 2008-10-31 2010-05-06 Getinge La Calhene Method and device for making a bag
FR2937898A1 (en) * 2008-10-31 2010-05-07 Getinge La Calhene METHOD AND DEVICE FOR MANUFACTURING BAG
US8814430B2 (en) 2010-02-23 2014-08-26 Kraft Foods R&D, Inc. Food package having opening feature

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DE19961361A1 (en) 2001-07-12

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