DE102014101750A1 - Method for joining objects by plastic hot riveting and a device for hot riveting - Google Patents
Method for joining objects by plastic hot riveting and a device for hot riveting Download PDFInfo
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- DE102014101750A1 DE102014101750A1 DE102014101750.1A DE102014101750A DE102014101750A1 DE 102014101750 A1 DE102014101750 A1 DE 102014101750A1 DE 102014101750 A DE102014101750 A DE 102014101750A DE 102014101750 A1 DE102014101750 A1 DE 102014101750A1
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- Prior art keywords
- rivet
- heißnietköpfe
- deformation
- hot
- servomotor
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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
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/56—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using mechanical means or mechanical connections, e.g. form-fits
- B29C65/60—Riveting or staking
- B29C65/606—Riveting or staking the rivets being integral with one of the parts to be joined, i.e. staking
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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
- B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated 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
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/56—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using mechanical means or mechanical connections, e.g. form-fits
- B29C65/60—Riveting or staking
- B29C65/601—Riveting or staking using extra riveting elements, i.e. the rivets being non-integral with 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
- B29C66/20—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines
- B29C66/21—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being formed by a single dot or dash or by several dots or dashes, i.e. spot joining or spot welding
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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
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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
- B29C66/8246—Servomechanisms, e.g. servomotors
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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
- B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
- B29C66/914—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux
- B29C66/9141—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the temperature
- B29C66/91421—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the temperature of 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
- B29C66/90—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
- B29C66/922—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 measuring the pressure, the force, the mechanical power or the displacement of the joining tools
- B29C66/9231—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 measuring the pressure, the force, the mechanical power or the displacement of the joining tools by measuring the displacement of 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
- B29C66/90—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
- B29C66/93—Measuring or controlling the joining process by measuring or controlling the speed
- B29C66/934—Measuring or controlling the joining process by measuring or controlling the speed by controlling or regulating the speed
- B29C66/93441—Measuring or controlling the joining process by measuring or controlling the speed by controlling or regulating the speed the speed being non-constant over 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
- 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
- B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
- B29C65/24—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools characterised by the means for heating the tool
- B29C65/30—Electrical means
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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
- B29C65/56—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using mechanical means or mechanical connections, e.g. form-fits
- B29C65/60—Riveting or staking
- B29C65/601—Riveting or staking using extra riveting elements, i.e. the rivets being non-integral with the parts to be joined
- B29C65/602—Riveting or staking using extra riveting elements, i.e. the rivets being non-integral with the parts to be joined using hollow rivets
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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
- B29C65/56—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using mechanical means or mechanical connections, e.g. form-fits
- B29C65/60—Riveting or staking
- B29C65/606—Riveting or staking the rivets being integral with one of the parts to be joined, i.e. staking
- B29C65/607—Riveting or staking the rivets being integral with one of the parts to be joined, i.e. staking the integral rivets being hollow
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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
- B29C66/84—Specific machine types or machines suitable for specific applications
- B29C66/843—Machines for making separate joints at the same time in different planes; Machines for making separate joints at the same time mounted in parallel or in series
- B29C66/8432—Machines for making separate joints at the same time mounted in parallel or in series
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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
- B29C66/922—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 measuring the pressure, the force, the mechanical power or the displacement of the joining tools
- B29C66/9231—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 measuring the pressure, the force, the mechanical power or the displacement of the joining tools by measuring the displacement of the joining tools
- B29C66/92311—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 measuring the pressure, the force, the mechanical power or the displacement of the joining tools by measuring the displacement of the joining tools with special measurement means or methods
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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
- B29C66/92431—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 the pressure, the force or the mechanical power being kept constant over 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
- B29C66/92—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
- B29C66/92441—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 the pressure, the force or the mechanical power being non-constant over time
- B29C66/92443—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 the pressure, the force or the mechanical power being non-constant over time following a pressure-time profile
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Insertion Pins And Rivets (AREA)
Abstract
Die Erfindung betrifft ein Verfahren und eine Vorrichtung zum Verbinden von Gegenständen durch Kunststoffheißvernietung. Sie zeichnet sich dadurch aus, dass die Heißnietköpfe mit einer ersten Geschwindigkeit in Richtung der kongruenten Oberflächen der Nietdome bis zum Erreichen einer definierten Startposition unter Beachtung vorgegebener oder voreingestellter definierter Koordinaten mindestens eines Heißnietkopfes verfahren und sodann mit einer geringeren Geschwindigkeit bis zum Berühren der Oberfläche mindestens eines Nietdomes vorgeschoben werden, dass die Heißnietköpfe während des Rücklaufes und/oder während des Vorschubs bis zur Anlage des Heißnietkopfes an dem Nietdom oder nach dem Vorschub bis zum Nietdom auf eine Solltemperatur aufgeheizt werden und dass die Heißnietköpfe mit einer weiteren Vorschubbewegung unter Aufbringung einer geregelten, konstanten oder einer progressiv ansteigenden Druckkraft die Verformung der Nietdome bis zum Anschlag oder bis zum Erreichen eines definierten Verformungsgrades mindestens eines Nietdomes vornehmen.The invention relates to a method and apparatus for joining objects by plastic hot riveting. It is characterized in that the hot rivet heads move at a first speed in the direction of the congruent surfaces of the rivet domes until reaching a defined starting position observing predetermined or preset defined coordinates of at least one Heißnietkopfes and then at a slower speed to touch the surface of at least one Nietdomes be advanced that the Heißnietköpfe be heated to a desired temperature during the return and / or during the feed to the plant of the Heißnietkopfes on the rivet or after the feed to the rivet dome and that the Heißnietköpfe with a further feed movement with application of a controlled, constant or a progressively increasing compressive force to make the deformation of the rivet dome until it stops or until reaching a defined degree of deformation of at least one Nietdomes.
Description
Die Erfindung betrifft ein Verfahren zum Verbinden von Gegenständen durch Kunststoffheißvernietung mittels Umformung erwärmter thermoplastischer Nietdome mittels einer Vorrichtung mit einer definierten Anzahl von Heißnietköpfen, die nach dem Einlegen der Gegenstände in die Vorrichtung und der Nieten in kongruente Durchbrüche in den Gegenständen oder nach Durchstecken der an einem Gegenstand fixierten Nietdome durch Durchbrüche in den weiteren Gegenständen zunächst bis zum Berühren der Oberfläche mindestens eines Nietdomes verfahren werden und sodann wegabhängig die Verformung jedes Nietdomes durch die aufgeheizten Heißnietköpfe bewirken. The invention relates to a method for joining objects by Kunststoffheißvernietung by forming heated thermoplastic rivet by means of a device with a defined number of Heißnietköpfen after insertion of the objects in the device and the rivets in congruent openings in the objects or after passing through the at Subject fixed rivet domes are first moved through openings in the other objects to touch the surface of at least one Nietdomes and then path-dependent effect the deformation of each rivet dome by the heated Heißnietköpfe.
Aus der
Ausgehend vom dargestellten Stand der Technik liegt der Erfindung die Aufgabe zu Grunde, den Nietprozess zu beschleunigen und die Effizienz der Vorrichtung bei der Vernietung zu erhöhen. Starting from the illustrated prior art, the invention is based on the object to speed up the riveting process and to increase the efficiency of the device during riveting.
Die Aufgabe löst die Erfindung durch Ausgestaltung des Verfahrens durch die im Kennzeichenteil des Anspruchs 1 angegebenen Verfahrensschritte sowie durch eine Vorrichtung, wie sie in Anspruch 5 angegeben ist. The object is achieved by the invention by embodiment of the method by the method steps indicated in the characterizing part of claim 1 and by an apparatus as indicated in claim 5.
Vorteilhafte Weiterbildungen des Verfahrens sind in den abhängigen Unteransprüchen 2 bis 4 und vorteilhafte Ausgestaltungen der Vorrichtung in den Ansprüchen 6 bis 11 angegeben. Advantageous developments of the method are specified in the dependent subclaims 2 to 4 and advantageous embodiments of the device in claims 6 to 11.
Erfindungsgemäß ist vorgesehen, dass die Heißnietköpfe mit einer ersten Geschwindigkeit in Richtung der kongruenten Oberflächen der Nietdome bis zum Erreichen einer definierten Startposition unter Beachtung vorgegebener oder voreingestellter definierter Koordinaten mindestens eines Heißnietkopfes verfahren und sodann mit einer geringeren Geschwindigkeit bis zum Berühren der Oberfläche mindestens eines Nietdomes vorgeschoben werden, dass die Heißnietköpfe während des Rücklaufes und/oder während des Vorschubs bis zur Anlage des Heißnietkopfes an dem Nietdom oder nach dem Vorschub bis zum Nietdom auf eine Solltemperatur aufgeheizt werden und dass die Heißnietköpfe mit einer weiteren Vorschubbewegung unter Aufbringung einer geregelten, konstanten oder einer progressiv ansteigenden Druckkraft die Verformung der Nietdome bis zum Anschlag oder bis zum Erreichen eines definierten Verformungsgrades mindestens eines Nietdomes vornehmen. According to the invention, the hot rivet heads are moved at a first speed in the direction of the congruent surfaces of the rivet domes until reaching a defined starting position, observing predetermined or preset defined coordinates of at least one hot rivet head and then advanced at a slower speed until touching the surface of at least one rivet dome be heated to a target temperature during the return and / or during the feed until the hot rivet head on the rivet or after the feed to the rivet dome and that the Heißnietköpfe with a further feed movement applying a controlled, constant or a Progressively increasing compressive force to make the deformation of the rivet dome until it stops or until reaching a defined degree of deformation of at least one rivet dome.
Durch die stufenweise Änderung der Verfahrgeschwindigkeit wird erreicht, dass der Heißnietkopf sehr schnell den Ausgangspunkt erreicht, da seine Koordinaten vorgegeben oder beim Einrichten im ersten Maschinendurchgang durch einen Sensor erfasst werden können. Auch ist eine zeitliche Zuordnung im Ablauf möglich, so dass auch der Zeitpunkt, zu welchen der Vorschub unterbrochen werden soll, festgelegt sein kann. Ab diesem Zeitpunkt kann ein langsameres Verfahren einsetzen und/oder auch ein Aufheizen oder ein Fortführen der Aufheizung des Heißnietkopfes oder der Heißnietköpfe, die im Vorrichtungsoberteil angeordnet sind, z. B. in einer Druckplatte. Die Verfahrgeschwindigkeit zwischen der Ausgangsposition und dem Anschlag des Heiznietkopfes auf der Oberfläche eines Hohl- oder Vollnietes aus Kunststoff oder der Endposition nach Abschluss der Verformung erfolgt gegenüber dem ersten Vorschub langsamer. The stepwise change of the travel speed ensures that the hot rivet head reaches the starting point very quickly, since its coordinates can be predetermined or detected by a sensor during setup in the first machine pass. A temporal assignment in the process is also possible, so that the time at which the feed is to be interrupted, can be set. From this point on, a slower process can be used and / or also a heating up or a continuation of the heating of the hot-riveting head or of the hot-rivet heads arranged in the upper part of the device, e.g. B. in a printing plate. The travel speed between the starting position and the stop of the Heiznietkopfes on the surface of a hollow or rivet made of plastic or the final position after completion of the deformation takes place more slowly compared to the first feed.
Mit dem Anliegen des Heiznietkopfes an dem Nietdom wird über die Steuerung veranlasst, dass der Servomotor mit einer progressiven oder mittels einer geregelten gleichbleibenden Druckkraft den Nietdom in gewünschter Weise durch den Heiznietkopf vorgegeben verformt. Schlussendlich kann der umgeformte Kopf auf der Oberfläche des Oberteils des Gegenstandes aufsetzen oder steuerungsgemäß vorher enden, wodurch die Vernietung abgeschlossen ist. Die Oberfläche bildet dabei den Anschlag, so dass mit Erreichen des Anschlags der Nietprozess beendet ist und die Steuerung veranlasst, den Motor in entgegengesetzter Richtung zu drehen, damit die Druckplatte mit dem Nietkopf oder den Nietköpfen wieder von der Oberfläche der zu verbindenden Teile bzw. von den verformten Nietdornen abhebt. With the concern of the Heiznietkopfes on the rivet dome is caused by the control that the servo motor with a progressive or by means of a regulated constant compressive force the rivet mandrel deformed predetermined by the Heiznietkopf. Finally, the reshaped head may touch the surface of the top of the article or be pre-set according to control ends, whereby the riveting is completed. The surface forms the stop, so that when reaching the stop of the riveting process is completed and causes the controller to rotate the motor in the opposite direction, so that the pressure plate with the rivet head or rivet heads again from the surface of the parts to be joined or lifts off the deformed rivet mandrels.
Es hat sich gezeigt, dass bei Verwendung einer ansteigenden Beschleunigungskurve bei der Vernietung der Nietprozess im Vergleich zu einer Nietung mit konstanter Verformzeit zeitlich wesentlich verkürzt werden kann, ebenso wenn mit gleichbleibender Druckkraft auf den Nietkopf gedrückt wird. Dennoch sind die Verfahren geeignet, hier in befriedigender Weise nicht nur eine optimale Vernietung zu erreichen, sondern sie ermöglichen durch den schnellen Rückhub zum Erreichen der Ausgangsposition auch eine zeitliche Verkürzung des Nietprozesses, so dass wesentlich mehr Nietvorgänge in einer Zeiteinheit gegenüber dem Stand der Technik realisiert werden können. It has been found that when using a rising acceleration curve in the riveting of the riveting process can be significantly reduced in time compared to a rivet with a constant deformation time, as well as when pressed with constant compressive force on the rivet head. Nevertheless, the methods are suitable here to satisfactorily achieve not only optimum riveting, but they also allow the riveting process to shorten the initial position by means of the fast return stroke so that substantially more riveting operations are implemented in a unit of time than the prior art can be.
Um den Nietprozess weiter zu beschleunigen, hat es sich als vorteilhaft erwiesen, dass bereits während der ersten beiden Bewegungsabschnitte der Heißnietkopf bzw. jeder der vorhandenen Heißnietköpfe aufgeheizt oder auf Solltemperatur nachgeheizt wird, während die Aufheizung schon während der Rückführphase der Druckplatte nach der Verformung erfolgt. In order to further accelerate the riveting process, it has proved to be advantageous for the hot rivet head or each of the existing hot rivet heads to be heated or reheated to desired temperature during the first two movement sections, while the heating takes place during the return phase of the pressure plate after the deformation.
Es hat sich ferner als vorteilhaft erwiesen, den kraftgesteuerten Antrieb für die Heißnietköpfe mittels eines elektronisch gesteuerten Servomotors zu realisieren, wobei beim Berühren des Nietdomes durch den Heißnietkopf ein Stoppsignal in Abhängigkeit von der Stromaufnahme generiert wird. Erst mit Erreichen der Verformungstemperatur am Heißnietkopf setzt der Vorschub für die Verformung ein. Der Servomotor kann dabei entweder progressiv beschleunigt und gleichzeitig der Druck erhöht werden oder aber auch mit kontinuierlichem Druck die Verformung vorgenommen werden, bis die gewünschte Vernietung sichergestellt ist. Sobald der Heißnietkopf den Nietvorgang abgeschlossen hat, bewirkt die Steuerung eine Drehrichtungsumkehr des Servomotors, um ein Abheben der Nietköpfe von den verformten Domen sicherzustellen. It has also proved to be advantageous to realize the force-controlled drive for the hot rivet heads by means of an electronically controlled servomotor, wherein upon contact with the rivet dome by the Heißnietkopf a stop signal is generated in dependence on the power consumption. Only when the deformation temperature at the hot rivet head reaches the feed rate for the deformation begins. The servo motor can either be accelerated progressively and at the same time the pressure can be increased or else the deformation can be carried out with continuous pressure until the desired riveting is ensured. Once the hot rivet head has completed the riveting operation, the controller effects a reversal of the direction of rotation of the servomotor to ensure lift-off of the rivet heads from the deformed domes.
Die Verwendung eines Servomotors hat den Vorteil, dass dieser die Kontrolle der Winkelposition seiner Motorwelle sowie der Drehgeschwindigkeit und der Beschleunigung erlaubt. Dazu ist der Elektromotor zusätzlich mit einem Sensor zur Positionsbestimmung ausgestattet, so dass beim Verfahren auf die Positionsmarken gesetzt werden kann und der Motor stets auf diese Positionen zufährt. Die vom Sensor ermittelten Drehpositionen der Motorwelle werden kontinuierlich an die Regelelektronik übermittelt, mit der mehrere einstellbare Stellgrößen in den Regelkreis eingegeben werden können. Es ist also eine direkte Steuerung des Servomotors möglich, wobei eine optimale Regelung durch den Regelkreis des Motors selbst gegeben ist, so dass alle Motorsteuerungen in Abhängigkeit beispielsweise der erfassten Temperatur der Aufsetzpunkte oder der gewünschten verformten Domhöhe einstellbar und vorgebbar sind. Dadurch ist eine sehr schnelle Heißvernietung der Dome möglich, ohne dass aufwändige Messtechnik zusätzlich zur Anwendung kommen muss. The use of a servomotor has the advantage that it allows the control of the angular position of its motor shaft and the rotational speed and acceleration. For this purpose, the electric motor is additionally equipped with a sensor for position determination, so that can be set during the procedure on the position marks and the motor always moves to these positions. The rotational positions of the motor shaft determined by the sensor are transmitted continuously to the control electronics, with which several adjustable control variables can be entered into the control loop. Thus, a direct control of the servo motor is possible, wherein an optimal control is given by the control circuit of the motor itself, so that all motor controls depending on, for example, the detected temperature of the attachment points or the desired deformed dome height are adjustable and can be specified. As a result, a very fast hot riveting of the dome is possible without the need for time-consuming measurement technology.
Die Erfindung lässt aber auch einen Spindelantrieb mit einem einfachen Motor zu, der die Druckplatte in gewünschter Weise verfährt, wobei durch entsprechende Sensoren oder auch Stellvorgaben die gewünschte Verformung der Dome sichergestellt ist. Das Verfahren ist aber auch in Verbindung mit einem hydraulischen oder pneumatischen Antrieb grundsätzlich realisierbar. Dazu müssen allerdings die entsprechenden Ventilsteuerungen und eine entsprechend angepasste Steuerung vorgesehen sein, um die Abläufe hydraulisch oder pneumatisch sicherzustellen. However, the invention also allows for a spindle drive with a simple motor, which moves the pressure plate in the desired manner, whereby the desired deformation of the dome is ensured by appropriate sensors or also by default settings. However, the method is basically feasible in connection with a hydraulic or pneumatic drive. For this purpose, however, the corresponding valve controls and a correspondingly adapted control must be provided to ensure the processes hydraulically or pneumatically.
Die Erfindung umfasst aber auch eine Vorrichtung zum Verbinden von Gegenständen durch Kunststoffheißvernietung mittels Umformung erwärmter thermoplastischer Nietdome mittels einer Vorrichtung mit einer definierten Anzahl von Heißnietköpfen unterschiedlicher Höhe und Querschnittsform, die nach dem Einlegen der Gegenstände in die Vorrichtung und der Nieten in kongruente Durchbrüche in den Gegenständen oder nach Durchstecken der an einem Gegenstand fixierten Nietdome durch Durchbrüche in den weiteren Gegenständen zunächst bis zum Berühren der Oberfläche mindestens eines Nietdomes verfahren werden und sodann wegabhängig bis zum Erreichen des Anschlages den Verformungsprozess jedes Nietdomes durch die aufgeheizten Heißnietköpfe bewirken. Diese Vorrichtung ist gekennzeichnet durch:
- – ein Vorrichtungsoberteil mit einer Druckplatte mit eingesetzten beheizten Heißnietköpfen,
- – eine Grundplatte, auf der die zu verbindenden Gegenstände aufgelegt sind, die über aus der Oberfläche hervorstehende Nietdome miteinander verbindbar sind,
- – eine Höhenverstelleinrichtung zum relativen Verfahren der Druckplatte gegenüber der Grundplatte,
- – einen Antrieb für die Höhenverstelleinrichtung mit einem elektronisch steuerbaren Servomotor,
- – eine Ansteuerschaltung für den Servomotor zum schnellen Verfahren des Werkzeugoberteils mit den Heißnietköpfen mit einer ersten Geschwindigkeit in Richtung der Oberflächen der Nietdome bis zum Erreichen einer definierten Startposition mindestens eines Heißnietkopfes gegenüber der Oberfläche des zugehörigen Nietdomes unter Beachtung von vorgegebenen definierten Koordinaten,
- – eine direkte oder indirekt arbeitende Druckmesseinrichtung, die beim Berühren eines Nietdomes durch den Heißnietkopf die Vorschubbewegung für die Domverformung durch den Heißnietkopf und die Regelung des Servomotors zur Aufbringung einer konstanten oder progressiven Druckkraft einleitet und die Rückführung des Vorrichtungsoberteils mit den Heißnietköpfen in die Ausgangsposition nach Beendigen der Verformung bewirkt.
- A device top with a pressure plate with heated hot-rivet heads inserted,
- A base plate on which the objects to be connected are placed, which can be connected to one another via rivet domes projecting from the surface,
- A height adjustment device for relative movement of the pressure plate relative to the base plate,
- A drive for the height adjustment device with an electronically controllable servomotor,
- A drive circuit for the servomotor for rapid movement of the tool upper part with the hot rivet heads at a first speed in the direction of the surfaces of the rivet dome until reaching a defined starting position at least one Heißnietkopfes against the surface of the associated rivet dome in accordance with predetermined defined coordinates,
- A direct or indirect pressure gauge which, upon contact of a rivet dome by the hot rivet head, initiates the advancing motion for dome deformation by the hot rivet head and control of the servomotor to apply a constant or progressive compressive force and terminates the return of the device top with the hot rivet heads to the home position the deformation causes.
Durch Erfassen des Aufnahmestromes des Servomotors kann auf eine gesondert vorgesehene Druckmesseinrichtung verzichtet werden. Durch die Stromaufnahme beim Aufsetzen des Heißnietkopfs auf einen Dom wird detektiert, dass die Anlage erreicht ist. Davon abhängig kann dann eine Folgesteuerung in gewünschter Weise erfolgen. Dasselbe ist auch möglich, wenn durch die Verformung ein definierter Druckwert erreicht ist, der der gewünschten Verformung entspricht, so dass auch dann der Vorschub beendet wird und eine Rückführung der Druckplatte mit den Heißkopfnieten eingeleitet wird. By detecting the receiving current of the servo motor can be dispensed with a separately provided pressure measuring device. The power consumption when placing the Heißnietkopfs on a dome is detected that the system is reached. Depending on this, a sequence control can then take place in the desired manner. The same is also possible if the deformation reaches a defined pressure value which corresponds to the desired deformation, so that the feed is terminated and a return of the pressure plate with the hot-head rivets is initiated.
Die Steuerung kann auch so ausgelegt werden, dass die Hubbewegung winkelgesteuert erfolgen kann, das heißt, dass die Verfahrpunkte beim Einrichten definiert werden und die jeweiligen Positionssignale von der Steuereinrichtung registriert werden, so dass eine reine positionsabhängige Steuerung ermöglicht wird. The control can also be designed so that the lifting movement can be angle-controlled, that is, the traversing points are defined during setup and the respective position signals are registered by the control device, so that a pure position-dependent control is possible.
In weiterer Ausgestaltung ist eine Heizsteuerung vorgesehen, die während des Verfahrens der Druckplatte bis zum Startpunkt oder bis zur Auflage mindestens eines Heißnietkopfes auf einem Nietdom oder nach Abschluss des Verfahrens bis zu diesen Ausgangspunkten und/oder während der Rückführung der Druckplatte in die Ausgangsposition die Heißnietköpfe auf eine Solltemperatur aufheizt. Weiterhin ist eine Temperaturerfassungseinheit vorgesehen, die mit Erreichen der Solltemperatur die Steuerung des Servomotors veranlasst, unter Aufbringung einer geregelten konstanten oder einer progressiven Druckkraft die Heißnietköpfe zur Verformung der Nietdome auf diese zu drücken, bis die Heißnietköpfe an der Oberseite der Oberfläche der miteinander zu verbindenden Gegenstände anschlagen oder in einer definierten Höhe zur Oberfläche enden. In a further embodiment, a heating control is provided, which during the process of the printing plate to the starting point or to the support of at least one Heißnietkopfes on a Nietdom or after completion of the process up to these starting points and / or during the return of the printing plate in the starting position, the Heißnietköpfe heats up a set temperature. Furthermore, a temperature detecting unit is provided which, upon reaching the target temperature, causes the control of the servomotor to press the hot rivet heads to deform the rivet domes while applying a controlled constant or progressive compressive force until the hot rivet heads are at the top of the surface of the articles to be joined strike or end at a defined height to the surface.
Die Koordinaten zur Festlegung der Verfahrhöhe können direkt in die Steuerung eingegeben werden oder aber auch beim Einrichten der Vorrichtung detektiert werden. Ebenso ist es auch möglich, mittels eines Lasermessgerätes die Höhenpositionen beim Einrichten festzuhalten und diese in auswertbare Daten umzusetzen, die die Messeinrichtung verarbeiten kann, um den Servomotor ansteuern zu können. The coordinates for determining the travel height can be entered directly into the controller or can also be detected when setting up the device. Likewise, it is also possible to hold the height positions during setup by means of a laser measuring device and to convert them into evaluatable data which the measuring device can process in order to be able to control the servomotor.
Auch hat es sich als vorteilhaft erwiesen, mit der Verformung erst dann zu beginnen, wenn die Temperaturen aller Heißnietköpfe ihre Solltemperatur erreicht haben, da die unterschiedlichen Größen der Nietstempel unterschiedliche Aufheizperioden benötigen. Die Heißnietköpfe können in bekannter Weise hohl ausgebildet sein und mit entsprechenden Heizpatronen zum aufheizen besetzt sein. Die Temperatur wird in den Heißnietköpfen direkt gemessen, so dass hierüber auch eine individuelle Steuerung und Regelung der Heizung jeder einzelnen Heizpatrone ermöglicht wird. Auch diese Steuerung ist mit der Servomotorsteuerung kombinierbar. Eine Beheizung ist mittels eingesetzter elektrischer Heizpatronen individuell möglich. Also, it has proven to be advantageous to start with the deformation only when the temperatures of all Heißnietköpfe have reached their target temperature, since the different sizes of riveting need different heating periods. The Heißnietköpfe can be hollow in a known manner and be occupied with corresponding heating cartridges for heating. The temperature is measured directly in the Heißnietköpfen, so that this also an individual control and regulation of the heating of each heating cartridge is possible. This control can also be combined with the servomotor control. Heating is individually possible by means of inserted electric heating cartridges.
ZITATE ENTHALTEN IN DER BESCHREIBUNG QUOTES 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 of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.
Zitierte PatentliteraturCited patent literature
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102016101945A1 (en) | 2015-12-21 | 2016-08-04 | Metrik Sondermaschinenbau e.K. | Hot riveting stamp and hot riveting device |
DE102021209012A1 (en) | 2021-08-17 | 2023-02-23 | Richard Bergner Holding GmbH & Co. KG | System and method for processing workpieces and processing station for such a system |
DE102022106243A1 (en) | 2022-03-17 | 2023-09-21 | Rudholzer Technologien GmbH | Hot riveting device with two or more independently controllable rivet tips and method for operating the same |
DE102023102481A1 (en) | 2023-02-01 | 2024-08-01 | Metrik Sondermaschinenbau e.K. | Hot riveting stamp |
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EP0421019A1 (en) * | 1989-10-06 | 1991-04-10 | Siemens Aktiengesellschaft | Method and device for joining plastic parts with ultrasonic waves |
DE102010061164A1 (en) | 2010-12-10 | 2012-06-14 | Vorwerk & Co. Interholding Gmbh | Method for carrying out plastic-heat riveting, involves heating projecting rivet section and deforming rivet section to rivet head by hot rivet head |
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2014
- 2014-02-12 DE DE102014101750.1A patent/DE102014101750A1/en not_active Ceased
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Publication number | Priority date | Publication date | Assignee | Title |
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EP0421019A1 (en) * | 1989-10-06 | 1991-04-10 | Siemens Aktiengesellschaft | Method and device for joining plastic parts with ultrasonic waves |
DE102010061164A1 (en) | 2010-12-10 | 2012-06-14 | Vorwerk & Co. Interholding Gmbh | Method for carrying out plastic-heat riveting, involves heating projecting rivet section and deforming rivet section to rivet head by hot rivet head |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
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DE102016101945A1 (en) | 2015-12-21 | 2016-08-04 | Metrik Sondermaschinenbau e.K. | Hot riveting stamp and hot riveting device |
DE102016101945B4 (en) | 2015-12-21 | 2019-03-28 | Metrik Sondermaschinenbau e.K. | Hot riveting stamp and hot riveting device |
DE102021209012A1 (en) | 2021-08-17 | 2023-02-23 | Richard Bergner Holding GmbH & Co. KG | System and method for processing workpieces and processing station for such a system |
WO2023021011A1 (en) | 2021-08-17 | 2023-02-23 | Richard Bergner Holding GmbH & Co. KG | System and method for processing workpieces, and processing station for a system of this kind |
DE102021209012B4 (en) | 2021-08-17 | 2024-08-01 | Richard Bergner Holding GmbH & Co. KG | Plant and method for machining workpieces as well as machining station for such a plant |
DE102022106243A1 (en) | 2022-03-17 | 2023-09-21 | Rudholzer Technologien GmbH | Hot riveting device with two or more independently controllable rivet tips and method for operating the same |
DE102023102481A1 (en) | 2023-02-01 | 2024-08-01 | Metrik Sondermaschinenbau e.K. | Hot riveting stamp |
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