DE102008031379A1 - Method for welding sealing or discharging device on discharge neck of container by ultrasound, involves fixing discharge neck of container by automatic screwing of guide with inner negative thread on positive thread of discharge neck - Google Patents
Method for welding sealing or discharging device on discharge neck of container by ultrasound, involves fixing discharge neck of container by automatic screwing of guide with inner negative thread on positive thread of discharge neck Download PDFInfo
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- DE102008031379A1 DE102008031379A1 DE102008031379A DE102008031379A DE102008031379A1 DE 102008031379 A1 DE102008031379 A1 DE 102008031379A1 DE 102008031379 A DE102008031379 A DE 102008031379A DE 102008031379 A DE102008031379 A DE 102008031379A DE 102008031379 A1 DE102008031379 A1 DE 102008031379A1
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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
- B29C65/08—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using ultrasonic vibrations
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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
- B29C65/7802—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
- B29C66/001—Joining in special atmospheres
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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
- B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
- B29C66/53—Joining single elements to tubular articles, hollow articles or bars
- B29C66/532—Joining single elements to the wall of tubular articles, hollow articles or bars
- B29C66/5324—Joining single elements to the wall of tubular articles, hollow articles or bars said single elements being substantially annular, i.e. of finite length
- B29C66/53245—Joining single elements to the wall of tubular articles, hollow articles or bars said single elements being substantially annular, i.e. of finite length said articles being hollow
- B29C66/53246—Joining single elements to the wall of tubular articles, hollow articles or bars said single elements being substantially annular, i.e. of finite length said articles being hollow said single elements being spouts, e.g. joining spouts to containers
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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
- B29C66/82—Pressure application arrangements, e.g. transmission or actuating mechanisms for joining tools or clamps
- B29C66/824—Actuating mechanisms
- B29C66/8242—Pneumatic or hydraulic drives
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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
- B29C66/90—Measuring or controlling the joining process
- B29C66/92—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools
- B29C66/924—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools by controlling or regulating the pressure, the force, the mechanical power or the displacement of the joining tools
- B29C66/9241—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools by controlling or regulating the pressure, the force, the mechanical power or the displacement of the joining tools by controlling or regulating the pressure, the force or the mechanical power
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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
- B29C66/90—Measuring or controlling the joining process
- B29C66/92—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools
- B29C66/924—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools by controlling or regulating the pressure, the force, the mechanical power or the displacement of the joining tools
- B29C66/9261—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools by controlling or regulating the pressure, the force, the mechanical power or the displacement of the joining tools by controlling or regulating the displacement of the joining tools
- B29C66/92611—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools by controlling or regulating the pressure, the force, the mechanical power or the displacement of the joining tools by controlling or regulating the displacement of the joining tools by controlling or regulating the gap between the joining tools
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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
- 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
- B29C66/90—Measuring or controlling the joining process
- B29C66/94—Measuring or controlling the joining process by measuring or controlling the time
- B29C66/944—Measuring or controlling the joining process by measuring or controlling the time by controlling or regulating the time
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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
- B29C66/90—Measuring or controlling the joining process
- B29C66/95—Measuring or controlling the joining process by measuring or controlling specific variables not covered by groups B29C66/91 - B29C66/94
- B29C66/951—Measuring or controlling the joining process by measuring or controlling specific variables not covered by groups B29C66/91 - B29C66/94 by measuring or controlling the vibration frequency and/or the vibration amplitude of vibrating joining tools, e.g. of ultrasonic welding tools
- B29C66/9516—Measuring or controlling the joining process by measuring or controlling specific variables not covered by groups B29C66/91 - B29C66/94 by measuring or controlling the vibration frequency and/or the vibration amplitude of vibrating joining tools, e.g. of ultrasonic welding tools by controlling their vibration amplitude
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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
- B29C66/90—Measuring or controlling the joining process
- B29C66/96—Measuring or controlling the joining process characterised by the method for implementing the controlling of the joining process
- B29C66/967—Measuring or controlling the joining process characterised by the method for implementing the controlling of the joining process involving special data inputs or special data outputs, e.g. for monitoring purposes
- B29C66/9674—Measuring or controlling the joining process characterised by the method for implementing the controlling of the joining process involving special data inputs or special data outputs, e.g. for monitoring purposes involving special data outputs, e.g. special data display means
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2101/00—Use of unspecified macromolecular compounds as moulding material
- B29K2101/12—Thermoplastic materials
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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
- B29L2001/00—Articles provided with screw threads
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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
- B29L2031/00—Other particular articles
- B29L2031/712—Containers; Packaging elements or accessories, Packages
- B29L2031/7172—Fuel tanks, jerry cans
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
- B60K15/03—Fuel tanks
- B60K15/03177—Fuel tanks made of non-metallic material, e.g. plastics, or of a combination of non-metallic and metallic material
Abstract
Description
Die Erfindung betrifft ein Verfahren sowie eine Vorrichtung zum Verschweißen einer Verschlussvorrichtung auf dem Ausgussstutzen eines Behälters mittels Ultraschall.The The invention relates to a method and a device for welding a closure device on the spout of a container by ultrasound.
Es ist bekannt, zum Fügen von Kunststoffen das Ultraschallschweißen einzusetzen, wobei die für den Schweißvorgang erforderliche Wärme im Thermoplast durch das Einleiten von Ultraschallschwingungen in die Schweißstelle des Werkstückes unter Druck erzeugt wird. Der Kunststoff erweicht lokal und ermöglicht so die Schweißverbindung.It is known for joining plastics ultrasonic welding use, taking care of the welding process required heat in the thermoplastic by the introduction of ultrasonic vibrations in the weld of the workpiece is generated under pressure. The plastic softens locally and allows so the welded joint.
Konstruktiv ist hierfür ein Hochfrequenzgenerator zur Erzeugung der Ultraschallfrequenz erforderlich, die über einen Ultraschallwandler als Schwingung auf die den Schweißvorgang durchführende Sonotrode übertragen wird. Diese ist unter definiertem Druck auf die Schweißstelle zu bringen. Durch die Wirkung der Ultraschallwellen werden die zu verschweißenden Teile bei unmittelbarem Stoffschluss miteinander verbunden. In der Regel werden die für jeden Schweißprozeß günstigsten Einstellbereiche der Schweißparameter wie Anpreßdruck, Amplitude der Ultraschallwellen und Schweißzeit durch aufwendige Schweißversuche ermittelt.constructive is this a high frequency generator for generating the Ultrasonic frequency required, via an ultrasonic transducer as vibration on the welding process Sonotrode is transmitted. This is under defined Put pressure on the weld. By the effect The ultrasonic waves become the parts to be welded connected with immediate material connection. Usually become the cheapest for every welding process Setting ranges of welding parameters such as contact pressure, Amplitude of ultrasonic waves and welding time by consuming Welding tests determined.
Für die spezifische Anwendung dieses Verfahrens beim Schweißvorgang zur dichten Verbindung einer Verschlussvorrichtung auf dem Ausgussstutzen eines Behälters, beispielsweise eines Kanisters, ergeben sich hierbei Probleme im Hinblick auf die in ihrer Qualität konstante Verbindung und deren Überprüfung.For the specific application of this method during the welding process for tight connection of a closure device on the spout a container, such as a canister Problems in terms of quality constant connection and its verification.
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Das vorliegende erfinderische Verfahren sowie die diesbezügliche Vorrichtung sollen vor diesem Hintergrund zum einen den Ablauf des Schweißvorgangs automatisieren und das optimale Schweißergebnis sicherstellen. Zum anderen soll erreicht werden, dass dieses Ergebnis auch überprüft und innerhalb eines definierten Rahmens als sicher gelungen bewertet werden kann. Dies soll verlässlich und mit geringem konstruktivem Aufwand erreicht werden.The present inventive method and the related Device should be against this background, on the one hand, the flow of Automate welding process and the optimum welding result to ensure. On the other hand, it should be achieved that this result also checked and within a defined Frame can be assessed as safe. This should be reliable and be achieved with little design effort.
Erreicht wird dies nach der Erfindung durch ein Verfahren zum Verschweißen einer Verschlussvorrichtung auf dem Ausgussstutzen eines Behälters mittels Ultraschall, bei dem in einem ersten Schritt der Ausgussstutzen des Behälters fixiert wird durch das Aufschrauben einer Führung mit negativem Innengewinde auf das positive Gewinde des Ausgussstutzens. Der Schraubvorgang erfolgt mit eingestelltem Drehmoment und in einer vorgegebenen Toleranz der Schraubhöhe. Eventuelle gröbere Fehler am Rand des Kanisters werden hierbei erkannt und der Kanister als Ausschuss behandelt. Der Ausgussstutzen ist durch die Führung in seiner Position genau bestimmt für den anschließenden Schweißvorgang und in der Führung sicher gehalten, um bei dem unter Druck ablaufenden thermoplastischen Verformungsvorgang des Schweißens keine Lageänderung zu vollziehen, die zu unterschiedlichen Schweißergebnissen führen würde.Reached This is according to the invention by a method of welding a closure device on the spout of a container by means of Ultrasound, in which, in a first step, the spout the container is fixed by unscrewing a Guide with negative internal thread on the positive thread of the spout. The screwing is done with set Torque and within a given tolerance of the screw height. Any grosser errors will be on the edge of the canister recognized here and treated the canister as a committee. The spout is precisely determined by the leadership in his position for the subsequent welding process and held in the lead safely to the under pressure ongoing thermoplastic deformation process of welding to make no change in position, which leads to different Welding results.
Auf den derart festgelegten Ausgussstutzen, in dem sich die zu verschweißende Verschlussvorrichtung befindet, wird nun im zweiten Schritt die Ultraschallverschweißvorrichtung unter definiertem Druck aufgebracht. Die Schweissvorrichtung und die Fixierung befinden sich in einer Achse, um eine definiert winklige Verschweissung zu gewährleisten. Der verwendete Anpressdruck, die Amplitude der Ultraschallwellen und die Zeit des Schweißvorgangs sind hierbei unter Berücksichtigung der zu verschweißenden Werkstücke und deren Materialeigenschaften vorab bestimmt. Zweckmäßigerweise erfolgt die Führung und der Andruck der Schweißvorrichtung mittel eines Pneumatikzylinders, der mit einem Wegemesssystem ausgestattet ist.The ultrasonic welding device is then applied under defined pressure in the second step in such a way on the pouring spout thus determined, in which the closure device to be welded is located. The welding device and the fixation are in one axis to ensure a defined angular welding. The applied contact pressure, the amplitude of the ultrasonic waves and the time of the welding process are determined in advance, taking into account the workpieces to be welded and their material properties. Appropriately, the guidance and the pressure of the welding device means of a pneumatic cylinder, which with a Wegemess system is equipped.
Die Schweißvorrichtung wird hierbei auf den zu verschweißenden Ausgussstutzen abgesenkt, wobei die vertikale Bewegung durch das Wegemesssystem erfasst wird. Die Aktivierung der Schweißsonotrode erfolgt hierbei erst dann, wenn das Wegemesssystem anzeigt, dass die Sonotrode auf dem Ausgussstutzen aufsitzt, da kein vertikaler Weg mehr zurückgelegt wird. Um sicher zu stellen, dass auch der für den Schweißvorgang definierte Anpressdruck bereits erreicht ist, wird vom Zeitpunkt des Stillstands der Sonotrode an eine definierte Zeitspanne zugeschlagen, beispielsweise 2,5 Sekunden, um den Druck sicher aufzubauen. Erst dann wird die Schweißvorrichtung aktiviert.The Welding device is in this case to be welded Lowered spout, with the vertical movement through the Position measuring system is detected. The activation of the welding sonotrode takes place here only when the distance measuring system indicates that the sonotrode sits on the spout, as no vertical Way more is covered. To ensure, that also already defined for the welding process contact pressure is reached, is from the time of standstill of the sonotrode added a defined period of time, for example 2.5 seconds, to build up the pressure safely. Only then is the welding device activated.
Zur Überprüfung des Schweißergebnisses wird mittels Wegemesssystems die beim Schweißvorgang durch die Sonotrode zurückgelegte Wegstrecke erfasst und hierbei ein Abgleich mit vorgegebenen Sollwerten durchgeführt. Es wird hierbei die Startposition der Sonotrode bzw. des Ultraschallverschweißers vor dem Schweißvorgang erfasst sowie die Endposition nach Ablauf der festgelegten Schweißzeit gemessen. Der Wegepunkt der Aktivierung der Schweißvorrichtung wird als Startpunkt auf Null gesetzt.For checking the welding result is the Wegemesssystems the During the welding process covered by the sonotrode Distance detected and this an adjustment with predetermined setpoints carried out. It will be the starting position of the sonotrode or the Ultraschallverschweißers before the welding process recorded as well as the end position after expiry of the specified welding time measured. The waypoint of activation of the welding device is set to zero as the starting point.
Ergebnis des Abgleiches ist im Regelfall, dass die Sonotrode beim Schweißvorgang eine Wegstrecke innerhalb einer definierten Ober- und Untergrenze zurückgelegt und somit einen Toleranzwert eingehalten hat, und die Schweißung innerhalb der vorgegebenen Parameter als gelungen und dicht angesehen werden kann. Bei einem angestrebten Schweißweg von beispielsweise 0,5 mm kann das zulässige Fenster des Schweißweges zwischen 0,3 mm und 0,7 mm liegen.Result The adjustment is usually that the sonotrode during the welding process a distance within a defined upper and lower limit covered and thus has maintained a tolerance value, and the weld within the given parameters can be regarded as successful and dense. For a desired sweat path for example, 0.5 mm, the permissible window of the Welding path between 0.3 mm and 0.7 mm.
Nach dieser Überprüfung kann in einer zweckmäßigen Form des Verfahrens eine entsprechende Kennzeichnung des Behälters erfolgen, bei der die erfasste Wegstrecke des Schweißvorgangs verknüpft mit weiteren Informationen, beispielsweise dem Zeitpunkt des Schweißvorgangs und den vorgegebenen Schweißparametern auf den Behälter aufgedruckt werden. Hierdurch kann automatisiert und verlässlich festgehalten werden, dass der so gekennzeichnete Behälter nach Abschluss des Schweißverfahrens in korrekter Weise mit der Verschlussvorrichtung verschweißt wurde. So kann gewährleistet werden, dass die Behälter, die das Schweißverfahren und die anschließende Überprüfung positiv durchlaufen haben, ausgeliefert werden können. Evtl. später feststellbare Mängel an der Schweißnaht können somit mit Bestimmtheit nicht dem Schweißverfahren angelastet werden, sondern müssen beim späteren Transport oder Einsatz der Behälter entstanden sein.To This review may be in a convenient Form of the method an appropriate labeling of the container take place, in which the detected distance of the welding process linked with further information, for example the time of the welding process and the specified welding parameters on the container be printed. This can be automated and reliable be noted that the so marked container after completing the welding process in the correct way was welded to the closure device. So can ensure that the containers holding the Welding process and subsequent verification have passed through positive, can be delivered. Possibly. later detectable defects in the weld can therefore definitely not the welding process be charged, but need later transport or use of the container may have arisen.
Im abschließenden Verfahrensschritt wird der Gewindering der Führung automatisch vom Ausgussstutzen des Behälters gelöst und der verschweißte Behälter weiter transportiert.in the final process step, the threaded ring of Guide automatically from the spout of the container solved and the welded container transported further.
Ein weiterer besonders vorteilhafter Aspekt des Verfahrens ist, dass es auch zum Verschweißen von Behältern verwendet werden kann, die mit explosionsgefährdeten Stoffen befüllt sind, also in explosionsgefährdeter Atmosphäre (ATEX) durchführbar ist. Ist beispielsweise ein mit einer Verschlussvorrichtung zu verschweißender Kanister mit Methanol befüllt, so ist zu berücksichtigen, dass die bei Raumtemperatur entstehenden Methanoldämpfe mit der Umgebungsluft ein explosionsfähiges Gemisch bilden. Es ist daher eine spezifische Zündtemperatur dieser Mischung bei der Auslegung des Verfahrens und der Verwendung der entsprechenden Betriebsmittel zu berücksichtigen.One Another particularly advantageous aspect of the method is that It also used for welding containers which is filled with explosive substances are so in an explosive atmosphere (ATEX) is feasible. For example, one with a Closure device to be welded canister with methanol filled, it should be noted that at Room temperature resulting methanol vapors with the ambient air form an explosive mixture. It is therefore one specific ignition temperature of this mixture in the design the process and the use of the appropriate equipment to take into account.
Der Vorteil des erfindungsgemäßen Verfahrens liegt demnach darin, dass es ohne aufwendigen konstruktiven Aufwand auch in einer geschlossenen explosionsgefährdeten Atmosphäre durchführbar ist. Hierfür sind lediglich die für den Ablauf des Verfahrens erforderlichen Aggregate und elektrischen Betriebsmittel entsprechend der vorliegenden Zone explosionsfähiger Atmosphäre zu wählen und in das Verfahren zu implementieren. Am Ende des Schweißverfahrens verlässt demnach ein verschweißtes und geprüftes Behältnis den geschlossenen Bereich.Of the Advantage of the method lies Accordingly, that it without complex design effort also in a closed explosive atmosphere is feasible. For this are only the for the process of the procedure required aggregates and electrical Operating equipment according to the present zone more explosive Atmosphere to choose and implement in the process. At the end of the welding process leaves accordingly a welded and tested container the closed area.
Das erfindungsgemäße Verfahren zum Verschweißen einer Verschlussvorrichtung auf dem Ausgussstutzen eines Behälters mittels Ultraschall wird hierbei durch eine vorteilhafte Vorrichtung umgesetzt, die zum einen aus der Vorrichtung zur Fixierung des Ausgussstutzens und zum anderen aus dem Ultraschallverschweißer gebildet wird.The inventive method for welding a closure device on the spout of a container By means of ultrasound, this is achieved by an advantageous device implemented, on the one hand from the device for fixing the spout and on the other hand formed from the Ultraschallverschweißer becomes.
Die Vorrichtung zum Fixieren des Ausgussstutzens umfasst zum einen eine Führung mit negativem Gewinde, welches korrespondierend zum positiven Gewinde des Ausgussstutzens ausgebildet ist. Dieses Gewinde wird automatisiert angetrieben von einem Motor, beispielsweise über ein Zahnradgetriebe. Zum Betrieb der Vorrichtung in einer explosionsgefährdeter Atmosphäre ist es zweckmäßig, als Antrieb einen druckluftbetriebenen Motor mit ATEX-Zulassung zu wählen, um eine Zündung des explosionsfähigen Luftgemischs sicher ausschließen zu können.The Device for fixing the spout comprises on the one hand a Guide with negative thread, which corresponds is formed to the positive thread of the spout. This Thread is automatically driven by a motor, for example, over a gear transmission. To operate the device in a potentially explosive atmosphere Atmosphere, it is appropriate as a drive to choose an ATEX-approved air-driven engine, to an ignition of the explosive air mixture safe to exclude.
Zweckmäßigerweise ist die zuvor beschriebene Vorrichtung zum Fixieren des Ausgussstutzens auf einer Führungsachse geführt, auf der auch der Ultraschallverschweißer geführt wird. Dieser wird ebenfalls auf den Ausgussstutzen abgesenkt, wobei die Sonotrode in die Führung eingreift und den in dieser fixierten Ausgussstutzen mit der eingesetzten Verschlussvorrichtung verschweißt. Zweckmäßigerweise kommt auch hierbei ein Antrieb zum Einsatz, der als Betriebsmittel in explosionsgefährdeter Atmosphäre zugelassen ist, beispielsweise ein druckluftbetriebener Motor.Conveniently, the device described above for fixing the spout is guided on a guide axis, on which also the ultrasonic sealer is guided. This is also lowered to the spout, with the sonotrode engages the guide and the in the This fixed spout is welded to the inserted closure device. Conveniently, a drive is also used in this case, which is approved as equipment in potentially explosive atmospheres, such as a compressed air engine.
Desweiteren umfasst die Vorrichtung Messglieder und Auswertungs- und Steuerelektronik, um den Schweißvorgang definiert durchzuführen und das Ergebnis in Bezug auf den Schweißweg zu überprüfen. Auch diese Komponenten sind zweckmäßigerweise so auszulegen, dass sie in einer explosionsfähigen Atmosphäre einsetzbar sind.Furthermore the device comprises measuring elements and evaluation and control electronics, to perform the welding process defined and to check the result in relation to the welding path. These components are expediently be designed so that they are in an explosive atmosphere can be used.
Schließlich kommt zur abschließenden Kennzeichnung des bearbeiteten Behälters ein Drucksystem, beispielsweise auf Basis der Tintenstrahltechnik, zum Einsatz, welches ebenfalls für einen Einsatz im Ex-Bereich konfiguriert werden kann. Somit ist sichergestellt, dass die gesamte Vorrichtung im Ex-Bereich gefahren werden kann und somit ein geschlossenes System verwirklichbar ist.After all comes to the final identification of the worked Container a printing system, for example based on the Inkjet technology, for use, which also for An insert in the hazardous area can be configured. Thus is ensured that the entire device was driven in the Ex area can be and thus a closed system can be realized.
Nachfolgend ist eine Vorrichtung zur Durchführung des erfindungsgemäßen Verfahrens anhand zweier schematischer Zeichnungen beschrieben.following is an apparatus for carrying out the invention Method described with reference to two schematic drawings.
Es zeigenIt demonstrate
Die Figuren verdeutlichen lediglich schematisch den Ablauf des Verfahrens und die Anordnung der Betriebsmittel, wobei auf eine detaillerte Darstellung mit elektronischen Komponenten und einer Druckstation verzichtet wurde.The Figures illustrate only schematically the course of the process and the arrangement of the resources, taking on a more detailed Presentation with electronic components and a printing station was waived.
Der
in
Beim
Aufschrauben erfolgt die Drehbewegung des negativen Gewindes
In
ZITATE ENTHALTEN IN DER BESCHREIBUNGQUOTES INCLUDE IN THE DESCRIPTION
Diese Liste der vom Anmelder aufgeführten Dokumente wurde automatisiert erzeugt und ist ausschließlich zur besseren Information des Lesers aufgenommen. Die Liste ist nicht Bestandteil der deutschen Patent- bzw. Gebrauchsmusteranmeldung. Das DPMA übernimmt keinerlei Haftung für etwaige Fehler oder Auslassungen.This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.
Zitierte PatentliteraturCited patent literature
- - EP 0572059 A1 [0005] - EP 0572059 A1 [0005]
- - DE 4206584 C2 [0006] - DE 4206584 C2 [0006]
- - DE 4325856 A1 [0007] - DE 4325856 A1 [0007]
- - DE 4325878 A1 [0007] - DE 4325878 A1 [0007]
Claims (14)
Priority Applications (1)
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DE102008031379A DE102008031379B4 (en) | 2008-07-04 | 2008-07-04 | Method and apparatus for ultrasonic welding a closure device on the spout of a container |
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DE102008031379A DE102008031379B4 (en) | 2008-07-04 | 2008-07-04 | Method and apparatus for ultrasonic welding a closure device on the spout of a container |
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DE102008031379A1 true DE102008031379A1 (en) | 2010-01-07 |
DE102008031379B4 DE102008031379B4 (en) | 2011-07-28 |
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Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0074343A2 (en) * | 1981-09-08 | 1983-03-16 | Akerlund & Rausing Licens Aktiebolag | Method and apparatus for manufacturing a container having an inner end closure |
EP0572059A1 (en) | 1992-05-29 | 1993-12-01 | International Business Machines Corporation | Ultrasonic adhesion/dehesion monitoring apparatus with acoustic transducer means |
DE4325856A1 (en) | 1992-07-31 | 1994-02-24 | Fraunhofer Ges Forschung | Method for assessment of welded joints using ultrasound |
DE4206584C2 (en) | 1992-03-03 | 1994-03-10 | Fraunhofer Ges Forschung | Device and method for connecting two components by means of ultrasound |
US5566529A (en) * | 1994-02-22 | 1996-10-22 | Sireix; Georges | Process for manufacturing a tubular package, and package obtained by the implementation of the process |
-
2008
- 2008-07-04 DE DE102008031379A patent/DE102008031379B4/en not_active Expired - Fee Related
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0074343A2 (en) * | 1981-09-08 | 1983-03-16 | Akerlund & Rausing Licens Aktiebolag | Method and apparatus for manufacturing a container having an inner end closure |
DE4206584C2 (en) | 1992-03-03 | 1994-03-10 | Fraunhofer Ges Forschung | Device and method for connecting two components by means of ultrasound |
EP0572059A1 (en) | 1992-05-29 | 1993-12-01 | International Business Machines Corporation | Ultrasonic adhesion/dehesion monitoring apparatus with acoustic transducer means |
DE4325856A1 (en) | 1992-07-31 | 1994-02-24 | Fraunhofer Ges Forschung | Method for assessment of welded joints using ultrasound |
DE4325878A1 (en) | 1992-07-31 | 1994-02-24 | Fraunhofer Ges Forschung | Method for assessment of welded joints using ultrasound |
US5566529A (en) * | 1994-02-22 | 1996-10-22 | Sireix; Georges | Process for manufacturing a tubular package, and package obtained by the implementation of the process |
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