DE102011011215B4 - Method for connecting and connecting a first workpiece with a second workpiece - Google Patents
Method for connecting and connecting a first workpiece with a second workpiece Download PDFInfo
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- DE102011011215B4 DE102011011215B4 DE102011011215.4A DE102011011215A DE102011011215B4 DE 102011011215 B4 DE102011011215 B4 DE 102011011215B4 DE 102011011215 A DE102011011215 A DE 102011011215A DE 102011011215 B4 DE102011011215 B4 DE 102011011215B4
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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
- B29C37/00—Component parts, details, accessories or auxiliary operations, not covered by group B29C33/00 or B29C35/00
- B29C37/0078—Measures or configurations for obtaining anchoring effects in the contact areas between layers
- B29C37/0082—Mechanical anchoring
- B29C37/0085—Mechanical anchoring by means of openings in the layers
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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
- B29C65/40—Applying molten plastics, e.g. hot melt
- B29C65/42—Applying molten plastics, e.g. hot melt between pre-assembled parts
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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
- B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
- B29C65/4805—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding characterised by the type of adhesives
- B29C65/481—Non-reactive adhesives, e.g. physically hardening adhesives
- B29C65/4815—Hot melt adhesives, e.g. thermoplastic adhesives
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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
- B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
- B29C65/52—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding characterised by the way of applying the adhesive
- B29C65/54—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding characterised by the way of applying the adhesive between pre-assembled parts
- B29C65/542—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding characterised by the way of applying the adhesive between pre-assembled parts by injection
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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
- B29C65/603—Riveting or staking using extra riveting elements, i.e. the rivets being non-integral with the parts to be joined the rivets being pushed in blind holes
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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
- B29C65/605—Riveting or staking using extra riveting elements, i.e. the rivets being non-integral with the parts to be joined the rivets being molded in place, e.g. by injection
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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
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/05—Particular design of joint configurations
- B29C66/303—Particular design of joint configurations the joint involving an anchoring effect
- B29C66/3032—Particular design of joint configurations the joint involving an anchoring effect making use of protusions or cavities belonging to at least one of the parts to be joined
- B29C66/30325—Particular design of joint configurations the joint involving an anchoring effect making use of protusions or cavities belonging to at least one of the parts to be joined making use of cavities belonging to at least one of the parts to be joined
- B29C66/30326—Particular design of joint configurations the joint involving an anchoring effect making use of protusions or cavities belonging to at least one of the parts to be joined making use of cavities belonging to at least one of the parts to be joined in the form of porosity
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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
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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
- B29C66/72—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 structure of the material of the parts to be joined
- B29C66/727—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 structure of the material of the parts to be joined being porous, e.g. foam
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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
- B29C66/80—General aspects of machine operations or constructions and parts thereof
- B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
- B29C66/832—Reciprocating joining or pressing tools
- B29C66/8322—Joining or pressing tools reciprocating along one axis
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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
- B29C65/40—Applying molten plastics, e.g. hot melt
- B29C65/42—Applying molten plastics, e.g. hot melt between pre-assembled parts
- B29C65/425—Applying molten plastics, e.g. hot melt between pre-assembled parts characterised by the composition of the molten plastics applied between pre-assembled parts
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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
- B29C66/45—Joining of substantially the whole surface of the articles
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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
- B29C66/71—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 composition of the plastics material 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
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/737—Articles provided with holes, e.g. grids, sieves
Abstract
Verfahren zum Verbinden eines ersten Werkstückes (2) aus einem schweißbaren Thermoplast mit einem zweiten zumindest teilweise aus einem geschäumten Thermoplast bestehenden Werkstück (3) durch eine formschlüssige Verbindung, dadurch gekennzeichnet, dass ein mit dem schweißbaren Thermoplast des ersten Werkstückes (2) verschweißbares artgleiches Material (4) in einem erwärmten fließfähigen Zustand über ein Injektionswerkzeug (6) mit einem erhitzten Applikationsteil (7), das durch das erste Werkstück (2) hindurch in das zweite Werkstück (3) durch einen Injektionskanal (5, 8) geführt wird, injiziert wird, dass mit dem erhitzten Applikationsteil (7) der zur Applizierung notwendige Injektionskanal (5) im zweiten Werkstück (3) gebildet wird, dass in dem zweiten Werkstück (3) ein gegenüber dem Durchmesser des Injektionskanals (8) vergrößerter Pfropfen (10) artgleichen Materials (4) gebildet wird, dessen anschließender im Durchmesser verkleinerter Bereich den Injektionskanal (5, 8) nach Zurückziehen des Injektionswerkzeuges (6) ausfüllt und mit dem ersten Werkstück (2) verschweißt.A method for connecting a first workpiece (2) made of a weldable thermoplastic with a second at least partially made of a foamed thermoplastic workpiece (3) by a positive connection, characterized in that a weldable with the weldable thermoplastic of the first workpiece (2) same type of material (4) in a heated flowable state via an injection tool (6) with a heated application part (7) which is passed through the first workpiece (2) into the second workpiece (3) through an injection channel (5, 8) injected is that with the heated application part (7) necessary for the application injection channel (5) in the second workpiece (3) is formed, that in the second workpiece (3) compared to the diameter of the injection channel (8) enlarged plug (10) similar Material (4) is formed, the subsequent reduced in diameter portion of the injection channel (5, 8) fills after retraction of the injection tool (6) and welded to the first workpiece (2).
Description
Gebiet der ErfindungField of the invention
Die Erfindung betrifft ein Verfahren zum Verbinden eines ersten Werkstückes aus einem schweißbaren Thermoplast mit einem zweiten zumindest teilweise aus einem geschäumten Thermoplast bestehenden Werkstück durch eine formschlüssige Verbindung.The invention relates to a method for connecting a first workpiece made of a weldable thermoplastic with a second at least partially made of a foamed thermoplastic workpiece by a positive connection.
Die Erfindung betrifft weiterhin eine Verbindung eines ersten Werkstückes aus einem schweißbaren Thermoplast mit einem zweiten zumindest teilweise aus einem geschäumten Thermoplast bestehenden Werkstück, hergestellt durch das Verfahren nach Anspruch 1, wobei die Werkstücke formschlüssig miteinander verbunden sind.The invention further relates to a connection of a first workpiece made of a weldable thermoplastic with a second at least partially made of a foamed thermoplastic workpiece, produced by the method according to claim 1, wherein the workpieces are positively connected to each other.
Stand der TechnikState of the art
Es besteht häufig das Problem, Werkstücke aus einem geschäumten Kunststoff mit guten Wärmeisolationseigenschaften aber relativ geringen Festigkeitswerten bzw. einer hohen Elastizität mit Werkstücken aus einem verschweißbaren Thermoplast höherer Festigkeit zu verbinden, um die Stabilität der so entstehenden Baueinheit zu erhöhen. Dies erweist sich insbesondere als schwierig, wenn die beiden Werkstücke erst nach einer getrennten Bearbeitung miteinander verbunden werden sollen.There is often the problem of joining workpieces made of a foamed plastic with good thermal insulation properties but relatively low strength values or high elasticity with workpieces made of a weldable thermoplastic higher strength to increase the stability of the resulting assembly. This proves particularly difficult if the two workpieces are to be connected to each other only after a separate processing.
Thermoplaste lassen sich bei Einwirkung von Wärme und Druck mit und ohne Zusatzwerkstoff miteinander verschweißen. Die zu verschweißenden Werkstoffe werden dabei über ihre Schmelztemperatur hinaus erwärmt und in einen fließfähigen Zustand gebracht. Da dies für unterschiedliche Kunststoffe bei verschiedenen Temperaturen geschieht, können neben artgleichen nur Kunststoffe mit ähnlichen Schmelzindizes gegeneinander verschweißt werden.Thermoplastics can be welded together with and without additional material when exposed to heat and pressure. The materials to be welded are heated beyond their melting temperature and brought into a flowable state. Since this is done for different plastics at different temperatures, in addition to similar types only plastics with similar melt indices can be welded against each other.
Aus der
Nachteilig dabei ist, dass die beiden Materialien nur als Verbundplatte weiterverarbeitet werden können und nicht jedes Werkstück für sich bearbeitbar ist.The disadvantage here is that the two materials can only be further processed as a composite plate and not every workpiece is workable by itself.
Weiterhin ist aus der
Auch hierbei besteht der Nachteil, dass die beiden Werkstücke in einem gemeinsamen Verfahren hergestellt werden müssen und nicht separat für sich bearbeitet werden können. Ein nachträgliches Zusammenfügen zweier bearbeiteter Werkstücke scheidet damit auch hier aus.Again, there is the disadvantage that the two workpieces must be made in a common process and can not be processed separately for themselves. Subsequent joining together of two machined workpieces is therefore also ruled out here.
Aus der
Nachteilig dabei ist, dass zunächst von dem ersten Werkstück/starre Deckschicht her in den Hartschaumkern des zweiten Werkstückes mit einem entsprechenden Spezialwerkzeug eine sich nach innen kegelförmig erweiternde Ausnehmung eingeschnitten werden muss. Anschließend wird in die zugehörige Öffnung des ersten Werkstückes/Deckschicht abdichtend das Krafteinleitungselement eingesetzt und der verbleibende Hohlraum im Hartschaumkern mit einer aushärtenden Masse verfüllt. Als aushärtbare Masse soll sich dabei besonders eine mineralische Vergussmasse (Injektionsmörtel) oder auch ein Kunststoff eignen. Der Injektionsmörtel wird dabei über die Aufnahmeöffnung des Dübels und weiter über eine seitliche Öffnung in der Dübelwandung der Ausnehmung zugeführt.The disadvantage here is that initially from the first workpiece / rigid cover layer into the hard foam core of the second workpiece with a corresponding special tool, a conical widening inwardly recess must be cut. Subsequently, the force introduction element is sealingly inserted into the associated opening of the first workpiece / cover layer and the remaining cavity in the hard foam core is filled with a hardening compound. As hardenable mass should be especially a mineral potting compound (injection mortar) or a plastic suitable. The injection mortar is supplied via the receiving opening of the dowel and further via a lateral opening in the dowel wall of the recess.
Aus der
Nachteilig dabei ist, dass in das injizierte Material entweder eine Schraube direkt eingedreht werden muss oder dass das Material über ein schraubenförmiges Applikationsteil injiziert und das Applikationsteil herausgeschraubt wird, sodass ein Gewinde entsteht über das später eine Schraube oder ähnliches eingeschraubt werden kann.The disadvantage here is that in the injected material either a screw must be screwed directly or that the material is injected via a helical application part and the application part is unscrewed, so that a thread is formed on the later a screw or the like can be screwed.
Aufgabenstellungtask
Aufgabe der vorliegenden Erfindung ist es daher, ein Verfahren bzw. eine Verbindung anzugeben, die es insbesondere ermöglicht, ein bearbeitetes Werkstück aus einem verschweißbaren Thermoplast mit einem bearbeiteten Werkstück aus einem geschäumten Thermoplast zu verbinden.The object of the present invention is therefore to specify a method or a connection which makes it possible in particular to produce a machined workpiece from a weldable workpiece To connect thermoplastic with a machined workpiece made of a foamed thermoplastic.
Darstellung der ErfindungPresentation of the invention
Die Aufgabe bezüglich des Verfahrens wird in Verbindung mit dem Oberbegriff des Anspruches 1 dadurch gelöst, dass ein mit dem schweißbaren Thermoplast des ersten Werkstückes verschweißbares artgleiches Material in einem erwärmten fließfähigen Zustand über ein Injektionswerkzeug mit einem erhitzten Applikationsteil, das durch das erste Werkstück hindurch in das zweite Werkstück durch einen Injektionskanal geführt wird, injiziert wird, dass mit dem erhitzten Applikationsteil der zur Applizierung notwendige Injektionskanal im zweiten Werkstück gebildet wird, dass in dem zweiten Werkstück ein gegenüber dem Durchmesser des Injektionskanals vergrößerter Pfropfen artgleichen Materials gebildet wird, dessen anschließender im Durchmesser verkleinerter Bereich den Injektionskanal nach Zurückziehen des Injektionswerkzeuges ausfüllt und mit dem ersten Werkstück verschweißt.The object with respect to the method is achieved in conjunction with the preamble of claim 1, characterized in that a weldable with the weldable thermoplastic material of the first material in a heated flowable state via an injection tool with a heated application part, which passes through the first workpiece into the second workpiece is passed through an injection channel, is injected, that is formed with the heated application part necessary for the application injection channel in the second workpiece, that in the second workpiece with respect to the diameter of the injection channel enlarged plug of the same material is formed, the subsequent reduced in diameter Area fills the injection channel after retraction of the injection tool and welded to the first workpiece.
Dadurch, dass mit dem erhitzten Applikationsteil der zur Applizierung notwendige Injektionskanal im zweiten Werkstück gebildet wird, kann auf ein kompliziertes Spezialwerkzeug zur Herstellung des Injektionskanals im zweiten Werkstück verzichtet werden.Because the injection channel required for the application is formed in the second workpiece with the heated application part, a complicated special tool for producing the injection channel in the second workpiece can be dispensed with.
Das dem schweißbaren Thermoplast des ersten Werkstückes artgleiche Material bildet in dem geschäumten Material unter Verdrängung des umgebenden Materials im geschäumten Bereich einen vergrößerten Pfropfen, dessen im Durchmesser verkleinerter Bereich den Injektionskanal sowohl im zweiten Werkstück als auch im ersten Werkstück ausfüllt und im Bereich des ersten Werkstückes mit dem ihn umgebenden Werkstoff verschweißt. Dadurch kann relativ einfach und sicher eine nachträgliche formschlüssige Verbindung zwischen den Werkstücken hergestellt werden.The weldable thermoplastic material of the first workpiece of the same material forms in the foamed material with displacement of the surrounding material in the foamed area an enlarged plug whose reduced diameter area fills the injection channel both in the second workpiece and in the first workpiece and in the first workpiece with welded to the surrounding material. As a result, a subsequent positive connection between the workpieces can be made relatively easily and safely.
Gemäß einer bevorzugten Ausführungsform der Erfindung wird das Injektionswerkzeug mit einem freien Ende eines hohlzylindrischen Applikationsteils in eine Endposition im geschäumten Bereich des zweiten Werkstücks gebracht, wobei über mindestens eine Öffnung des Applikationsteiles das artgleiche Material zur Bildung des Pfropfens injiziert wird und während des Zurückziehens des Applikationsteiles ein stielförmiges Verbindungsstück aus dem plastifizierten Material gebildet wird, dessen Ende mit dem ersten Werkstück über eine Schweißverbindung verbunden wird. Dadurch, dass das artgleiche Material erst in einer Endposition des Applikationsteiles im geschäumten Bereich des zweiten Werkstückes injiziert wird, kann sich durch Einspritzen bzw. Injizieren einer entsprechenden Menge des artgleichen Materials unter Verdrängung des geschäumten Materials der vergrößerte Pfropfen bilden, der beim Zurückziehen des Applikationsteiles unter weiterer Zuführung des artgleichen Materials in ein stielförmiges Verbindungsstück, dessen Ende mit dem ersten Werkstück über eine Schweißverbindung verbunden ist, übergehen.According to a preferred embodiment of the invention, the injection tool is brought with a free end of a hollow cylindrical application part in an end position in the foamed region of the second workpiece, wherein via at least one opening of the application part of the same material to form the plug is injected and during the retraction of the application part stem-shaped connector is formed from the plasticized material, the end of which is connected to the first workpiece via a welded joint. Characterized in that the material of the same material is injected only in an end position of the application part in the foamed area of the second workpiece, can be formed by injecting or injecting a corresponding amount of the same type of material under displacement of the foamed material of the enlarged plug, which under retraction of the application part further supply of the similar material in a handle-shaped connecting piece, the end of which is connected to the first workpiece via a welded connection, pass.
Gemäß einer weiteren bevorzugten Ausführungsform der Erfindung wird das artgleiche Material über mindestens eine seitliche Öffnung des an seiner Stirnfläche geschlossenen Applikationsteiles injiziert. Durch eine oder mehrere seitliche Öffnungen des an seiner Stirnfläche geschlossenen Applikationsteiles erfolgt relativ schnell und formgünstig die Bildung des vergrößerten Pfropfens.According to a further preferred embodiment of the invention, the material of the same material is injected via at least one lateral opening of the application part closed on its end face. By one or more lateral openings of the application part, which is closed on its end face, the formation of the enlarged plug takes place relatively quickly and with a favorable shape.
Nach einer weiteren bevorzugten Ausführungsform der Erfindung wird das Applikationsteil in einer wendelförmigen Bewegung zurückgezogen. Durch die wendelförmige Bewegung wird der vergrößerte Pfropfen als ein korkenzieherähnliches Knäuel ausgebildet, was zu einer erhöhten formschlüssigen Verbindung führt.According to a further preferred embodiment of the invention, the application part is withdrawn in a helical movement. Due to the helical movement of the enlarged plug is formed as a corkscrew-like ball, resulting in an increased positive connection.
Gemäß einer weiteren bevorzugten Ausführungsform der Erfindung wird mit dem erhitzten Applikationsteil der zur Applizierung notwendiger Injektionskanal im ersten Werkstück gebildet. Je nach Ausbildung des ersten Werkstückes, kann auf die vorhergehende Ausbildung von Injektionskanälen im ersten Werkstück verzichtet werden, wobei der notwendige Kanal erst durch das erhitzte Applikationsteil erzeugt wird. Es ist aber auch möglich, das vor dem Injizieren des artgleichen Materials das erste Werkstück mit Injektionskanälen versehen wird, die auf den Außendurchmesser des Applikationsteiles abgestimmt sind.According to a further preferred embodiment of the invention, the injection part necessary for the application is formed in the first workpiece with the heated application part. Depending on the design of the first workpiece, can be dispensed with the previous training of injection channels in the first workpiece, the necessary channel is only generated by the heated application part. But it is also possible that the first workpiece is provided with injection channels prior to injecting the similar material, which are tuned to the outer diameter of the application part.
Die Aufgabe bezüglich der Verbindung wird in Verbindung mit dem Oberbegriff des Anspruches 7 dadurch gelöst, dass das erste Werkstück mindestens einen von einem artgleichen Material ausgefüllten Applikationskanal aufweist, in dem das artgleiche Material mit dem ersten Werkstück verschweißt ist, dass das artgleiche Material in dem zweiten Werkstück ein stielförmiges Verbindungsstück bildet, dass das Verbindungsstück in dem zweiten Werkstück in einen Pfropfen mit größerem Durchmesser als das Verbindungsstück des artgleichen Materials übergeht, und dass das artgleiche Material mit seinem Pfropfen das zweite Werkstück formschlüssig mit dem ersten Werkstück verbindet.The object with respect to the connection is achieved in conjunction with the preamble of claim 7, characterized in that the first workpiece has at least one of a similar material filled application channel, in which the same material is welded to the first workpiece that the same material in the second Workpiece forms a handle-shaped connecting piece, that the connecting piece in the second workpiece merges into a plug with a larger diameter than the connecting piece of similar material, and that the same material with its graft connects the second workpiece form-fitting manner with the first workpiece.
Durch den Pfropfen im zweiten Werkstück, der über das Verbindungsstück mit kleinerem Durchmesser mit dem ersten Werkstück verbunden, d. h. verschweißt ist, besteht zwischen dem ersten Werkstück und dem zweiten Werkstück eine sichere formschlüssige Verbindung.By the plug in the second workpiece, which is connected via the smaller diameter connector to the first workpiece, d. H. is welded, there is a secure positive connection between the first workpiece and the second workpiece.
Gemäß einer weiteren bevorzugten Ausführungsform der Erfindung sind das erste Werkstück und das artgleiche Material aus einem Polypropylen ausgebildet. Das zweite Werkstück besteht beispielsweise aus einem mit dem Material des ersten Werkstückes nicht verschweißbaren Material, das bevorzugt ein Polyethylenschaumstoff sein kann. According to a further preferred embodiment of the invention, the first workpiece and the same material are made of a polypropylene. The second workpiece, for example, consists of a non-weldable with the material of the first workpiece material, which may preferably be a polyethylene foam.
Die Zuführung des Materials über das Injektionswerkzeug wird volumen- und zeitabhängig gesteuert. Ebenfalls wird die Bewegung und Positionierung des Injektionswerkzeuges und seines Applikationsteiles sowie Druck und Temperatur durch eine Steuer- und Regeleinrichtung überwacht.The delivery of the material via the injection tool is controlled in terms of volume and time. Also, the movement and positioning of the injection tool and its application part as well as pressure and temperature is monitored by a control and regulating device.
Weitere Einzelheiten der Erfindung ergeben sich aus der nachfolgenden ausführlichen Beschreibung und den beigefügten Zeichnungen, in denen bevorzugte Ausführungsformen der Erfindung beispielhaft veranschaulicht sind.Further details of the invention will become apparent from the following detailed description and the accompanying drawings, in which preferred embodiments of the invention are illustrated by way of example.
Kurzbeschreibung der ZeichnungenBrief description of the drawings
In den Zeichnungen zeigen:In the drawings show:
Beschreibung der AusführungsbeispieleDescription of the embodiments
Eine Verbindung
Das erste Werkstück
Entsprechend den
Zum Verbinden der beiden Werkstücke
Nach Bildung des Pfropfens
Entsprechend dem Ausführungsbeispiel der
Natürlich stellen die in der speziellen Beschreibung diskutierten und in den Figuren gezeigten Ausführungsformen nur illustrative Ausführungsbeispiele der vorliegenden Erfindung dar. Dem Fachmann ist im Lichte der hiesigen Offenbarung ein breites Spektrum an Variationsmöglichkeiten an die Hand gegeben.Of course, the embodiments discussed in the specific description and shown in the figures represent only illustrative embodiments of the present invention. In the light of the disclosure herein, those skilled in the art will be offered a wide range of possible variations.
BezugszeichenlisteLIST OF REFERENCE NUMBERS
- 11
- Verbindungconnection
- 22
- erstes Werkstückfirst workpiece
- 33
- zweites Werkstücksecond workpiece
- 44
- artgleiches Materialsimilar material
- 55
-
Injektionskanal von
2 Injection channel of2 - 66
- Injektionswerkzeuginjection tool
- 77
-
Applikationsteil von
6 Application part of6 - 88th
-
Injektionskanal von
3 Injection channel of3 - 99
-
seitliche Öffnung von
7 lateral opening of7 - 1010
- PfropfenGraft
- 1111
-
Längsachse von
7 Longitudinal axis of7 - 1212
- Verbindungsstückjoint
- 1313
-
Außenfläche von
2 Outer surface of2
Claims (10)
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US9015919B2 (en) * | 2013-05-03 | 2015-04-28 | Covidien Lp | Method for sealing a reusable electrical surgical instrument |
US10668668B2 (en) | 2014-11-04 | 2020-06-02 | Woodwelding Ag | Bonding objects together |
FR3064522A1 (en) * | 2017-03-31 | 2018-10-05 | Compagnie Plastic Omnium | METHOD FOR ASSEMBLING ELEMENTS IN AN ASSEMBLY POSITION |
CN111113782A (en) * | 2019-12-24 | 2020-05-08 | 厦门建霖健康家居股份有限公司 | Connecting structure of plastic parts |
Citations (4)
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DE6811999U (en) * | 1968-12-16 | 1969-04-24 | Gewerk Keramchemie | COMPOSITE PANEL MADE OF THERMOPLASTIC WITH GLASS FIBER REINFORCED PLASTICS |
US3492381A (en) * | 1966-12-19 | 1970-01-27 | Jeff S Rhyne | Fastening method |
DE6608587U (en) * | 1968-01-20 | 1971-09-30 | Stotz Kontakt Gmbh | CONNECTION OF A THERMOPLASTIC PART WITH A DUROPLASTIC PART. |
DE3403819A1 (en) * | 1984-02-03 | 1985-08-14 | Rheinhold & Mahla GmbH, 8000 München | Process for anchoring a force-introduction element in a sandwich board |
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2011
- 2011-02-14 DE DE102011011215.4A patent/DE102011011215B4/en active Active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
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US3492381A (en) * | 1966-12-19 | 1970-01-27 | Jeff S Rhyne | Fastening method |
DE6608587U (en) * | 1968-01-20 | 1971-09-30 | Stotz Kontakt Gmbh | CONNECTION OF A THERMOPLASTIC PART WITH A DUROPLASTIC PART. |
DE6811999U (en) * | 1968-12-16 | 1969-04-24 | Gewerk Keramchemie | COMPOSITE PANEL MADE OF THERMOPLASTIC WITH GLASS FIBER REINFORCED PLASTICS |
DE3403819A1 (en) * | 1984-02-03 | 1985-08-14 | Rheinhold & Mahla GmbH, 8000 München | Process for anchoring a force-introduction element in a sandwich board |
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