DE102005010717A1 - Closing plastics tube in tube filling machine, by inserting laser beam deflecting device into tube prior to application of beam at right angles to inner surface of tube - Google Patents
Closing plastics tube in tube filling machine, by inserting laser beam deflecting device into tube prior to application of beam at right angles to inner surface of tube Download PDFInfo
- Publication number
- DE102005010717A1 DE102005010717A1 DE102005010717A DE102005010717A DE102005010717A1 DE 102005010717 A1 DE102005010717 A1 DE 102005010717A1 DE 102005010717 A DE102005010717 A DE 102005010717A DE 102005010717 A DE102005010717 A DE 102005010717A DE 102005010717 A1 DE102005010717 A1 DE 102005010717A1
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- Germany
- Prior art keywords
- tube
- laser beam
- housing
- deflection device
- application
- 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.)
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Classifications
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- 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
- B29C66/431—Joining the articles to themselves
- B29C66/4312—Joining the articles to themselves for making flat seams in tubular or hollow articles, e.g. transversal seams
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- 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
- B23K26/0823—Devices involving rotation of the workpiece
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- 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
- B23K26/10—Devices involving relative movement between laser beam and workpiece using a fixed support, i.e. involving moving the laser beam
- B23K26/103—Devices involving relative movement between laser beam and workpiece using a fixed support, i.e. involving moving the laser beam the laser beam rotating around the fixed workpiece
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- 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
- B23K26/10—Devices involving relative movement between laser beam and workpiece using a fixed support, i.e. involving moving the laser beam
- B23K26/103—Devices involving relative movement between laser beam and workpiece using a fixed support, i.e. involving moving the laser beam the laser beam rotating around the fixed workpiece
- B23K26/106—Devices involving relative movement between laser beam and workpiece using a fixed support, i.e. involving moving the laser beam the laser beam rotating around the fixed workpiece inside the workpiece
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- 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
- B23K26/20—Bonding
- B23K26/21—Bonding by welding
- B23K26/24—Seam welding
- B23K26/28—Seam welding of curved planar seams
- B23K26/282—Seam welding of curved planar seams of tube sections
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B13/00—Conditioning or physical treatment of the material to be shaped
- B29B13/02—Conditioning or physical treatment of the material to be shaped by heating
- B29B13/023—Half-products, e.g. films, plates
- B29B13/024—Hollow bodies, e.g. tubes or profiles
- B29B13/025—Tube ends
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- 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
- B29C57/00—Shaping of tube ends, e.g. flanging, belling or closing; Apparatus therefor, e.g. collapsible mandrels
- B29C57/10—Closing
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- 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
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- 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
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- 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
- B29C66/431—Joining the articles to themselves
- B29C66/4312—Joining the articles to themselves for making flat seams in tubular or hollow articles, e.g. transversal seams
- B29C66/43121—Closing the ends of tubular or hollow single articles, e.g. closing the ends of bags
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- 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
- B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
- B29C66/61—Joining from or joining on the inside
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- 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
- B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
- B29C66/61—Joining from or joining on the inside
- B29C66/612—Making circumferential joints
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- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B51/00—Devices for, or methods of, sealing or securing package folds or closures; Devices for gathering or twisting wrappers, or necks of bags
- B65B51/10—Applying or generating heat or pressure or combinations thereof
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B7/00—Closing containers or receptacles after filling
- B65B7/14—Closing collapsible or resilient tubes, e.g. for tooth paste, for lighter fuel
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- 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
- B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
- B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
- B29C35/08—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation
- B29C35/0805—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation
- B29C2035/0838—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation using laser
-
- 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
- B29C65/78—Means for handling the parts to be joined, e.g. for making containers or hollow articles, e.g. means for handling sheets, plates, web-like materials, tubular articles, hollow articles or elements to be joined therewith; Means for discharging the joined articles from the joining apparatus
- B29C65/7802—Positioning the parts to be joined, e.g. aligning, indexing or centring
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- 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
- B29C65/78—Means for handling the parts to be joined, e.g. for making containers or hollow articles, e.g. means for handling sheets, plates, web-like materials, tubular articles, hollow articles or elements to be joined therewith; Means for discharging the joined articles from the joining apparatus
- B29C65/7841—Holding or clamping means for handling purposes
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- 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
- B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
- B29C66/65—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles with a relative motion between the article and the welding tool
- B29C66/652—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles with a relative motion between the article and the welding tool moving the welding tool around the fixed article
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- 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
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- 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
- B29L2023/00—Tubular articles
- B29L2023/20—Flexible squeeze tubes, e.g. for cosmetics
Abstract
Description
Die Erfindung betrifft ein Verfahren zum Verschließen einer Kunststoff-Tube in einer Tubenfüllmaschine, wobei die Tube auf ihrer Innenoberfläche durch Aufbringen eines Laserstrahls örtlich erwärmt wird und die erwärmten Tubenwandungsbereiche miteinander unter Druck verbunden werden, wobei der Laserstrahl in Längsrichtung der Tube zugeführt und mittels einer Ablenkvorrichtung auf die Innenoberfläche der Tube gerichtet wird.The The invention relates to a method for closing a plastic tube in a tube filling machine, wherein the tube on its inner surface by applying a Laser beam locally is heated and the heated ones Tube wall areas are connected to each other under pressure, wherein the laser beam in the longitudinal direction fed to the tube and by means of a deflection device on the inner surface of the Tube is directed.
Darüber hinaus betrifft die Erfindung eine Vorrichtung insbesondere zur Durchführung des Verfahrens, mit einer Erwärmstation, in der die Tube auf ihrer Innenoberfläche örtlich erwärmbar ist, und einer Verschlussstation, in der die erwärmten Tubenwandungsbereiche miteinander unter Druck verbindbar sind, wobei die Erwärmstation eine Laservorrichtung umfasst, deren Laserstrahl mittels einer Ablenkvorrichtung auf die Innenoberfläche der Tube richtbar ist, wobei der Laserstrahl in einem rohrförmigen Gehäuse, das koaxial zu der Tube angeordnet ist und in dem die Umlenkvor richtung im Bereich des der Tube zugewandten stirnseitigen Endes angeordnet ist, axial zu der Umlenkvorrichtung verläuft.Furthermore The invention relates to a device, in particular for carrying out the Method, with a heating station, in which the tube is locally heatable on its inner surface, and a closure station, in the heated ones Tubenwandungsbereiche are interconnected under pressure, wherein the heating station a laser device, whose laser beam by means of a deflection device on the inner surface the tube is directable, wherein the laser beam in a tubular housing, the is arranged coaxially to the tube and in which the Umlenkvor direction arranged in the region of the tube facing the front end is, extends axially to the deflection device.
In einer Tubenfüllmaschine werden die Tuben, die einen kreiszylindrischen Tubenkörper aufweisen, üblicherweise in vertikal aufrechter Stellung durch einzelne Bearbeitungsstationen geführt, wobei das hintere Tubenende nach oben weist und zunächst noch unverschlossen ist. Nach Einfüllen eines Produktes wird das hintere Tubenende in einer Erwärmstation auf seiner Innenoberfläche in einem örtlich begrenzten Bereich über den gesamten Umfang soweit erwärmt, dass das die Tubenwandung bildende Kunststoffmaterial schweißbar ist. Die auf diese Weise örtlich erwärmte Tube wird dann in eine nachgeschaltete Verschluss- oder Pressstation befördert, in der die oberflächlich erwärmten Tubenwandungsbereiche zusammengedrückt werden und die Tube unter Bildung einer länglichen, sich im wesentlichen quer zur Tubenlängsrichtung erstreckenden Schweißnaht verschlossen wird.In a tube filling machine become the tubes, which have a circular cylindrical tube body, usually in a vertical upright position by individual processing stations guided, with the rear end of the tube pointing upwards and at first is unlocked. After filling of a product becomes the rear end of the tube in a heating station on its inner surface in a local limited area over so far the whole extent heated, the plastic material forming the tube wall can be welded. The local in this way heated Tube is then placed in a downstream sealing or pressing station transported, in the superficial heated Tube wall areas are compressed and the tube below Formation of an elongated, closed substantially transversely to the tube longitudinal direction extending weld becomes.
Seit langem ist es bekannt, die Erwärmung der inneren Tubenoberfläche mittels Aufbringung von Heißluft durchzuführen. Die Verwendung von Heißluft führt jedoch zu relativ hohen Betriebs- und Energiekosten und bringt den Nachteil mit sich, dass der Aufschmelzgrad der Innenoberfläche der Tubenwandung wesentlich von der Spaltbreite bzw. dem Abstand der Innenoberfläche von dem Heißluft-Auslass abhängig ist. Da Kunststoff-Tuben in der Regel unrund sind, ändert sich die Spaltbreite in Umfangsrichtung der Tube, so dass in Umfangsrichtung der Tube unterschiedliche Aufschmelzgrade der inneren Tubenoberfläche gegeben sind.since It has long been known the warming of the inner tube surface by applying hot air perform. The use of hot air leads however to relatively high operating and energy costs and brings the disadvantage with it, that the degree of melting of the inner surface of the Tubenwandung essential of the gap width or the distance of the inner surface is dependent on the hot air outlet. Since plastic tubes are usually out of round, the gap width changes in the circumferential direction of the tube, so that in the circumferential direction of the tube different Melting degrees of the inner tube surface are given.
Aus
der
Der Erfindung liegt die Aufgabe zugrunde ein Verfahren zum Verschließen einer Kunststoff-Tube in einer Tubenfüllmaschine der genannten Art zu schaffen, bei dem sich der Laserstrahl mit hoher Genauigkeit auf die zu erwärmenden Bereiche der Innenoberfläche der Tube aufbringen lässt und bei dem eine unbeabsichtigte Beaufschlagung des in der Tube befindlichen Produktes mit Laserenergie weitestgehend verhindert ist. Darüber hinaus soll eine Vorrichtung der genannten Art geschaffen werden, mit der sich das Verfahren in einfacher Weise zuverlässig ausführen lässt.Of the Invention is the object of a method for closing a Plastic tube in a tube filling machine to create the type mentioned, in which the laser beam with high accuracy to be heated Areas of the inner surface the tube can be applied and in which an unintentional admission of the tube located product largely prevented with laser energy is. About that In addition, a device of the type mentioned is to be created, with which the method can be carried out reliably in a simple manner.
Diese Aufgabe wird hinsichtlich des Verfahrens erfindungsgemäß durch die kennzeichnenden Merkmale des Anspruchs 1 gelöst. Dabei ist vorgesehen, dass die Umlenkvorrichtung vor Aufbringen des Laserstrahls in die Tube eingeführt wird. Somit wird der Laserstrahl, der in vorbekannter Weise in Axialrichtung der Tube zugeführt wird, an der Umlenkvorrichtung erst innerhalb der Tube umgelenkt und auf die Innenoberfläche der Tube gerichtet. Dies hat zur Folge, dass der Laserstrahl unter einem relativ großen Winkel und vorzugsweise unter einem Winkel von etwa 90°, d.h. annähernd senkrecht auf die Innenoberfläche der Tube auftrifft. Insbesondere hat sich ein Winkel im Bereich von 80° bis 90° und speziell im Bereich von 85° bis 90° als vorteilhaft erwiesen. Ein derartig großer Winkel führt dazu, dass die Energiedichte pro Flächeneinheit relativ groß ist. Wenn darüber hinaus an der Innenoberfläche der Tube eine Reflexion des Laserstrahls stattfinden sollte, wird dieser im wesentlichen in sich selbst reflektiert und nicht in Richtung des in der Tube befindlichen Produktes abgelenkt, so dass eine Beaufschlagung des Produktes mit Laserenergie weitestgehend vermieden ist.This object is achieved according to the invention by the characterizing features of claim 1. It is provided that the deflection device is introduced before applying the laser beam in the tube. Thus, the laser beam, which is supplied in the previously known manner in the axial direction of the tube, deflected at the deflection device only within the tube and directed to the inner surface of the tube. This has the consequence that the laser beam is incident at a relatively large angle, and preferably at an angle of approximately 90 °, ie approximately perpendicular to the inner surface of the tube. In particular An angle in the range of 80 ° to 90 ° and especially in the range of 85 ° to 90 ° proved to be advantageous. Such a large angle causes the energy density per unit area is relatively large. If, in addition, a reflection of the laser beam should take place on the inner surface of the tube, it will be substantially reflected in itself and will not be deflected in the direction of the product in the tube, so that exposure of the product to laser energy is largely avoided.
Wenn der Laserstrahl unter einem relativ großen Winkel von zumindest annähernd 90° auf die Tubenwandung auftrifft, hat die unrunde Tubenform keinen oder einen nur sehr geringen Einfluss auf das Reflexionsverhalten. Auf diese Weise sind die an die entsprechenden Maschinenteile zu stellenden Toleranzanforderungen deutlich reduziert. Auf ein zusätzliches Abstützelement auf der Außenseite der Tube kann dabei gegebenenfalls verzichtet werden.If the laser beam at a relatively large angle of at least approximately 90 ° to the tube wall the non-circular tube shape has no or only a very large amount little influence on the reflection behavior. That way are the tolerance requirements to be placed on the corresponding machine parts significantly reduced. On an additional supporting on the outside the tube can be omitted if necessary.
Das Einführen der Umlenkvorrichtung in die Tube erfordert, dass zwischen der Umlenkvorrichtung und der Tube eine Relativbewegung ausgeführt werden muss. Üblicherweise wird die Tube relativ zu der Umlenkvorrichtung angehoben, es ist jedoch auch möglich die Umlenkvorrichtung in die stationär gehaltene Tube einzufahren oder eine Bewegung der Tube und eine Bewegung der Umlenkvorrichtung zu überlagern.The Introduce the deflection device in the tube requires that between the deflection device and the tube must be made a relative movement. Usually the tube is raised relative to the diverter, it is but also possible retract the deflection in the stationary held tube or a movement of the tube and a movement of the deflection device to overlay.
Um die Tubenwandungsbereiche, die durch die Beaufschlagung mit Laserenergie angeschmolzen werden, in ihren Abmessungen insbesondere in Tubenlängsrichtung verändern bzw. einstellen zu können, kann in Weiterbildung der Erfindung vorgesehen sein, dass die Tube und/oder die Ablenkvorrichtung während der Aufbringung des Laserstrahls in Längsrichtung der Tube vorzugsweise oszillierend bewegt werden.Around the Tubenwandungsbereiche, by the application of laser energy be melted in their dimensions, especially in the tube longitudinal direction change or to be able to adjust may be provided in a further development of the invention that the tube and / or the deflection device during the application of the laser beam in the longitudinal direction of the tube preferably be moved oscillating.
Um den Laserstrahl über den gesamten Umfang der Innenoberfläche der Tube zu führen, kann entweder die Ablenkvorrichtung während der Aufbringung des Laserstrahls gedreht werden, alternativ oder zusätzlich dazu kann auch vorgesehen sein, dass die Tube während der Aufbringung des Laserstrahls gedreht wird.Around the laser beam over can guide the entire circumference of the inner surface of the tube, either the deflector during the application of the laser beam are rotated, alternatively or additionally It can also be provided that the tube during the application of the laser beam is turned.
Als Ablenkvorrichtung kann jedes Bauteil Verwendung finden, dass dem Laserstrahl eine vorbestimmte Richtungsänderung gibt. In bevorzugter Ausgestaltung der Erfindung ist vorgesehen, dass die Ablenkvorrichtung ein Spiegel ist, der vorzugsweise drehbar gelagert ist.When Ablenkvorrichtung can find any component use that the Laser beam gives a predetermined change in direction. In a preferred embodiment The invention provides that the deflection device is a mirror is, which is preferably rotatably mounted.
In Weiterbildung der Erfindung kann vorgesehen sein, dass der Laserstrahl in einem rohrförmigen Gehäuse verläuft, das koaxial zu der Tube angeordnet ist und in dem im Bereich des der Tube zugewandten Endes die Umlenkvorrichtung angeordnet ist. Der Laserstrahl wird im Inneren des rohrförmigen Gehäuses zugeführt und trifft dann auf die innerhalb des Gehäuses angeordnete Umlenkvorrichtung und wird von dieser in Richtung einer im Gehäuse ausgebildeten Durchlassöffnung umgelenkt, an der der Laserstrahl aus dem Ge häuse austritt. Durch die Anordnung der Umlenkvorrichtung bzw. des Spiegels innerhalb des Gehäuses ist dieser weitestgehend vor Verschmutzung oder Beschädigung geschützt. Vorzugsweise ist vorgesehen, dass der Laserstrahl axial in dem Gehäuse zu der Umlenkvorrichtung verläuft, von dieser um ca. 90° umgelenkt wird und dann radial aus dem Gehäuse austritt.In Development of the invention can be provided that the laser beam in a tubular shape casing runs, which is arranged coaxially with the tube and in the region of the tube facing end of the deflection is arranged. The laser beam is supplied inside the tubular housing and then impinges on the inside the case arranged deflecting device and is from this in the direction of a in the case trained passage opening deflected, at which the laser beam exits the housing. By the arrangement the deflection device or the mirror is within the housing this largely protected against contamination or damage. Preferably is provided that the laser beam axially in the housing to the Deflection device runs, from this deflected by about 90 ° and then radially out of the housing exit.
Eine Drehung der Umlenkvorrichtung bzw. des Spiegels um die Längsachse der Tube lässt sich in einfacher Weise erreichen, indem das Gehäuse während der Aufbringung des Laserstrahls um seine Längsachse, die mit der Längsachse der Tube zusammenfällt, gedreht wird.A Rotation of the deflecting device or the mirror about the longitudinal axis the tube leaves can be achieved in a simple manner by the housing during the application of the laser beam around its longitudinal axis, with the longitudinal axis the tube collapses, is turned.
Wenn der Laserstrahl im wesentlichen senkrecht auf die Innenoberfläche der Tube auftritt, wird ein Teil der Strahlen reflektiert, während ein weiterer Teil die Tubenwandung durchdringt. Um auch den die Tubenwandung durchdringenden Anteil des Laserstrahls zu nutzen, kann in Weiterbildung der Erfindung vorgesehen sein, dass derjenige Anteil des Laserstrahls, der die Tubenwandung durchdringt, auf der Außenseite der Tube zurück zur Tubenwandung reflektiert wird.If the laser beam is substantially perpendicular to the inner surface of the Tube occurs, a part of the rays is reflected while a further part penetrates the tube wall. To also the the tube wall can use penetrating share of the laser beam, in further education be provided that the portion of the laser beam, which penetrates the tube wall, reflected on the outside of the tube back to the tube wall becomes.
Hinsichtlich der Vorrichtung wird die oben genannte Aufgabe durch die kennzeichnenden Merkmale des Anspruchs 11 gelöst. Dabei ist vorgesehen, dass der Laserstrahl in einem rohrförmigen Gehäuse verläuft, das koaxial zu der Tube angeordnet ist und in dem im Bereich des die Tube zugewandten Endes die Umlenkvorrichtung angeordnet ist. Dabei verläuft der Laserstrahl axial in dem Gehäuse zu der Umlenkvorrichtung und tritt an einer Durchlassöffnung des Gehäuses radial aus dem Gehäuse aus. Mit der genannten Ausgestaltung ist der wesentliche Vorteil verbunden, dass der Laserstrahl und auch die im inneren des Gehäuses angeordnete Umlenkvorrichtung vor äußeren Beeinflussungen weitestgehend geschützt sind. Insbesondere kann vorgesehen sein, dass der Laserstrahl erst unmittelbar vor dem Auftreffen auf die Innenoberfläche der Tube aus dem Gehäuse austritt. Dies kann dadurch erreicht werden, dass die Durchlassöffnung unmittelbar an der Innenoberfläche der Tube angeordnet ist, wenn das Gehäuse in die Tube eingeführt ist.Regarding the device is the above-mentioned object by the characterizing Characteristics of claim 11 solved. It is provided that the laser beam extends in a tubular housing, the is arranged coaxially to the tube and in the area of the Tube facing end of the deflection is arranged. there runs the Laser beam axially in the housing to the deflector and occurs at a passage opening of the housing radially out of the case out. The mentioned embodiment has the essential advantage that the laser beam and also arranged in the interior of the housing Deflection device from external influences are largely protected. In particular, it can be provided that the laser beam only immediately exits the housing before impacting the inner surface of the tube. This can be achieved in that the passage opening immediately on the inner surface the tube is placed when the housing is inserted into the tube.
Das Gehäuse besitzt vorzugsweise einen Kreisquerschnitt und kann mit nur geringem radialem Spiel in die Tube eingeführt werden, so dass das Gehäuse auch der Positionierung und Ausrichtung der Tube dienen kann.The casing preferably has a circular cross-section and can with only a small radial clearance can be introduced into the tube, so that the housing too can serve the positioning and alignment of the tube.
Um zu verhindern, dass Schmutz und insbesondere Produktreste an dem der Tube zugewandten stirnseitigem Ende des Gehäuses in dieses eintreten, kann in Weiterbildung der Erfindung vorgesehen sein, dass das Gehäuse an diesem Ende verschlossen ist, wozu vorzugsweise eine aufgesetzte Verschlussplatte oder einen einstückig an das Gehäuse angeformte Gehäusewand dienen kann. Die Verschlussplatte oder die Gehäusewand kann unter einem Winkel von ca. 45° geneigt zur Längsachse des Gehäuses verlaufen und auf ihrer inneren, dem Gehäuseinnenraum zugewandten Seite die Umlenkvorrichtung bzw. den Spiegel tragen, so dass eine konstruktiv einfache Halterung für dieses Bauteil erreicht ist.Around to prevent dirt and especially product residues on the the tube facing the front end of the housing in this can occur be provided in a further development of the invention that the housing at this End is closed, including preferably an attached closure plate or one piece molded to the housing housing wall can serve. The closure plate or housing wall may be at an angle inclined by about 45 ° to the longitudinal axis of the housing run and on its inner, the housing interior facing side wear the deflection device or the mirror, so that a constructive simple holder for this component is reached.
Um den Laserstrahl über den gesamten Umfang der Innenoberfläche der Tube zu führen, wird vorzugsweise das Gehäuse während der Aufbringung des Laserstrahls um seine Längsachse gedreht, wobei gleichzeitig eine oszillierende Relativverstellung zwischen dem Gehäuse und der Tube stattfinden kann.Around the laser beam over to guide the entire circumference of the inner surface of the tube is preferably the housing while the application of the laser beam rotated about its longitudinal axis, wherein simultaneously an oscillating relative adjustment between the housing and the tube can take place.
In Weiterbildung der Erfindung kann vorgesehen sein, dass auf der Außenseite der Tube eine Reflexionsfläche angeordnet ist, mittels der derjenige Anteil des Laserstrahls, der die Tubenwandung durchdringt, auf der Außenseite der Tube zurück zur Tubenwandung reflektiert werden kann. Die Reflexionsfläche ist vorzugsweise unmittelbar außerhalb der Außenoberfläche der Tube angeordnet und kann an einer die Tube umgebenden Hülse ausgebildet sein, die unter enger Passung außenseitig auf die Tube gestülpt ist und der Positionierung der Tube dient und die Tube in eine kreisrunde Querschnittsform zwängt.In Development of the invention can be provided that on the outside the tube a reflection surface is arranged, by means of which that portion of the laser beam, the Tube wall penetrates, on the outside of the tube back to the tube wall can be reflected. The reflection surface is preferably immediate except for Outer surface of the Tube arranged and may be formed on a tube surrounding the tube, the tight fit on the outside put on the tube is and the positioning of the tube serves and the tube in a circular Cross-sectional shape forces.
Weitere Einzelheiten und Merkmale der Erfindung sind aus der folgenden Beschreibung eines Ausführungsbeispiels unter Bezugnahme auf die Zeichnung ersichtlich, wobei die einzige Figur eine schematische Schnittdarstellung der Vorrichtung zum Erwärmen einer Kunststoff-Tube in einer Tubenfüllmaschine zeigt.Further Details and features of the invention will become apparent from the following description an embodiment With reference to the drawing, wherein the only Figure is a schematic sectional view of the device for heating a Plastic tube in a tube filling machine shows.
Die
in der Figur dargestellt Vorrichtung
Oberhalb
des offenen Endes der Tube
In
der Wandung des Gehäuses
Zur
Erwärmung
des Bereichs B der Innenoberfläche
Derjenige
Anteil des Laserstrahls L, der die Wandung der Tube durchdringt,
trifft auf die Reflexionsfläche
Claims (21)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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DE102005010717A DE102005010717A1 (en) | 2005-03-09 | 2005-03-09 | Closing plastics tube in tube filling machine, by inserting laser beam deflecting device into tube prior to application of beam at right angles to inner surface of tube |
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Application Number | Priority Date | Filing Date | Title |
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DE102005010717A DE102005010717A1 (en) | 2005-03-09 | 2005-03-09 | Closing plastics tube in tube filling machine, by inserting laser beam deflecting device into tube prior to application of beam at right angles to inner surface of tube |
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DE102005010717A1 true DE102005010717A1 (en) | 2006-09-14 |
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DE102005010717A Withdrawn DE102005010717A1 (en) | 2005-03-09 | 2005-03-09 | Closing plastics tube in tube filling machine, by inserting laser beam deflecting device into tube prior to application of beam at right angles to inner surface of tube |
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Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3813570A1 (en) * | 1988-04-22 | 1989-11-09 | Fraunhofer Ges Forschung | METHOD FOR JOINING WORKPIECES FROM REFLOWABLE MATERIAL WITH LASER RADIATION |
DE19750263A1 (en) * | 1997-11-13 | 1999-05-20 | Iwk Verpackungstechnik Gmbh | Closing of plastic tube e.g. for toothpaste, in tube-filling machine |
DE19848065A1 (en) * | 1998-07-10 | 2000-01-13 | Iwk Verpackungstechnik Beteili | Sealing ends of thin-walled esp. thermoplastic tubes |
DE60002857T2 (en) * | 1999-03-29 | 2004-05-06 | Norden Pac Development Ab | DEVICE IN A FILLING AND SEALING MACHINE FOR HEATING A PART OF THE INSIDE OF A PLASTIC PACKING TUBE |
-
2005
- 2005-03-09 DE DE102005010717A patent/DE102005010717A1/en not_active Withdrawn
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3813570A1 (en) * | 1988-04-22 | 1989-11-09 | Fraunhofer Ges Forschung | METHOD FOR JOINING WORKPIECES FROM REFLOWABLE MATERIAL WITH LASER RADIATION |
DE19750263A1 (en) * | 1997-11-13 | 1999-05-20 | Iwk Verpackungstechnik Gmbh | Closing of plastic tube e.g. for toothpaste, in tube-filling machine |
DE19848065A1 (en) * | 1998-07-10 | 2000-01-13 | Iwk Verpackungstechnik Beteili | Sealing ends of thin-walled esp. thermoplastic tubes |
DE60002857T2 (en) * | 1999-03-29 | 2004-05-06 | Norden Pac Development Ab | DEVICE IN A FILLING AND SEALING MACHINE FOR HEATING A PART OF THE INSIDE OF A PLASTIC PACKING TUBE |
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