DE3835640A1 - Method of positively connecting two mouldings - Google Patents

Method of positively connecting two mouldings

Info

Publication number
DE3835640A1
DE3835640A1 DE19883835640 DE3835640A DE3835640A1 DE 3835640 A1 DE3835640 A1 DE 3835640A1 DE 19883835640 DE19883835640 DE 19883835640 DE 3835640 A DE3835640 A DE 3835640A DE 3835640 A1 DE3835640 A1 DE 3835640A1
Authority
DE
Germany
Prior art keywords
rib
groove
molded part
molded
thermoplastic material
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
DE19883835640
Other languages
German (de)
Inventor
Werner Theissig
Siegmund Schuech
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bayerische Motoren Werke AG
Original Assignee
Bayerische Motoren Werke AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Bayerische Motoren Werke AG filed Critical Bayerische Motoren Werke AG
Priority to DE19883835640 priority Critical patent/DE3835640A1/en
Publication of DE3835640A1 publication Critical patent/DE3835640A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • 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
    • B29C66/32—Measures for keeping the burr form under control; Avoiding burr formation; Shaping the burr
    • B29C66/322—Providing cavities in the joined article to collect the burr
    • 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
    • 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
    • B29C65/608—Riveting or staking the rivets being integral with one of the parts to be joined, i.e. staking the integral rivets being pushed in blind holes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/112—Single lapped joints
    • B29C66/1122—Single lap to lap joints, i.e. overlap joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—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
    • 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
    • B29C66/54—Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—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
    • B29C66/731—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 intensive physical properties of the material of the parts to be joined
    • B29C66/7311—Thermal properties
    • B29C66/73117—Tg, i.e. glass transition temperature
    • B29C66/73118—Tg, i.e. glass transition temperature of different glass transition temperature, i.e. the glass transition temperature of one of the parts to be joined being different from the glass transition temperature of the other part
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/739—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/7392—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic
    • B29C66/73921—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic characterised by the materials of both parts being thermoplastics
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • 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
    • B29C66/7394—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 thermoset
    • 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
    • B29C66/74—Joining plastics material to non-plastics material
    • B29C66/742—Joining plastics material to non-plastics material to metals or their alloys
    • 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
    • B29C65/06—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using friction, e.g. spin welding
    • B29C65/0609—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using friction, e.g. spin welding characterised by the movement of the parts to be joined
    • B29C65/0618—Linear
    • 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
    • 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
    • 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
    • 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

Abstract

For positively connecting two mouldings (1, 4), the one moulding (1) consists of a thermoplastic material which has a lower softening temperature than the second moulding (4). The second moulding (4) is provided with a groove (3) which has an undercut (5, 6). The first moulding (1) has a rib (2) which can be fitted into the groove (3). The rib (2) is heated, at least on its surface, until the thermoplastic material softens, whereupon the two parts (1, 4) are pressed against each other in order to press the softened rib (2) into the cavity (7) which is formed by the undercut (5, 6). <IMAGE>

Description

Die Erfindung bezieht sich auf ein Verfahren zum formschlüssigen Verbinden zweier Formteile, wobei mindestens eines der Formteile aus einem thermoplastischen Material besteht.The invention relates to a method for positive locking Connecting two molded parts, with at least one of the molded parts a thermoplastic material.

Kunststofformteile können durch Nieten, Schrauben, Kleben oder Schweißen miteinander verbunden werden. Insbesondere, wenn leistenförmige oder sonstwie langgestreckte Formteile aus Kunststoffen unterschiedlicher Wärmeausdehnungskoeffizienten miteinander verbunden werden und die verbundenen Teile starken Temperaturschwankungen ausgesetzt sind, tritt bei den bekannten Verbindungsarten jedoch das Problem auf, daß die verbundenen Teile sich verbiegen und/oder in anderer Weise deformiert werden. Bei einer Verbindung mit Nieten oder Schrauben kann man dieser Deformation z.B. durch Langlöcher begegnen, wodurch die beiden Teile im erforderlichen Ausmaß gegeneinander verschiebbar sind. Jedoch ist mit Nieten und Schrauben nur eine punktuelle Verbindung möglich, d.h. eine Verbindung, die eine relativ geringe Festigkeit aufweist. Auch muß das Teil mit den Langlöchern relativ dick ausgebildet werden, insbesondere, wenn es sich dabei um ein Kunststoffteil handelt, wodurch eine relativ große Bauhöhe entsteht. Auch erfordert eine Niet- oder Schraubverbindung relativ aufwendige manuelle Arbeiten bzw. bei Automatisierung sehr kostspielige Vorrichtungen. Darüber hinaus bilden Langlöcher undichte Stellen.Plastic molded parts can be riveted, screwed, glued or Welding can be connected. Especially if strip-shaped or otherwise elongated molded parts made of plastics different coefficients of thermal expansion linked together and the connected parts are subject to strong temperature fluctuations exposed, this occurs with the known types of connection Problem on that the connected parts bend and / or in otherwise deformed. When connected with rivets or You can screw this deformation e.g. encounter through slots, whereby the two parts against each other to the extent necessary are movable. However, with rivets and screws, there is only one selective connection possible, i.e. a connection that's a relative has low strength. The part with the elongated holes must also be be formed relatively thick, especially if it is a Plastic part deals, which creates a relatively large height. A rivet or screw connection also requires relatively complex manual work or very expensive in automation Devices. Elongated holes also form leaks.

Aufgabe der Erfindung ist es, ein Verfahren zum Verbinden von zwei Formteilen anzugeben, wobei wenigstens eines dieser Formteile aus einem thermoplastischen Material besteht, welches auf einfache Weise zu einer festen Verbindung führt, welche bei Temperaturschwankungen keine Deformationen hervorruft und zu einer geringen Bauhöhe der miteinander verbundenen Formteile führen kann. The object of the invention is a method for connecting two Specify molded parts, at least one of these molded parts from one thermoplastic material, which is a simple permanent connection, which does not occur in the event of temperature fluctuations Deformations and a low overall height of each other connected molded parts can lead.  

Dies wird erfindungsgemäß durch das im Anspruch 1 gekennzeichnete Verfahren erreicht. In den Unteransprüchen sind vorteilhafte Ausgestaltungen der Erfindung angegeben.This is inventively characterized by that in claim 1 Procedure reached. In the subclaims are advantageous Embodiments of the invention specified.

Durch die Erfindung wird eine in sich verschiebbare, formschlüssige Verbindung zweier Formteile hervorgebracht. Wenn die beiden Teile so miteinander verbunden werden sollen, daß sie zwar Längenänderungen, die durch Temperaturschwankungen hervorgerufen werden, ohne Deformation aufnehmen, jedoch ansonsten sich nicht in Längsrichtung der Rippe bzw. Nut verschieben, können die beiden Teile durch Verschrauben, Nieten, Schweißen, Klipsen, Kleben oder eine andere zusätzliche bekannte form- oder kraftschlüssige Verbindung gegeneinander fixiert werden. Diese zusätzliche Verbindung wird vorzugsweise im mittleren Abschnitt in Längsrichtung der beiden Formteile vorgesehen.The invention makes a self-locking, form-fitting Brought together two molded parts. If the two parts like this should be connected to each other, that they are changes in length, the caused by temperature fluctuations, without deformation take up, but otherwise not in the longitudinal direction of the rib or Move the groove, the two parts can be screwed, riveted, Welding, clipping, gluing or any other known form or non-positive connection can be fixed against each other. These additional connection is preferably in the middle section in The longitudinal direction of the two molded parts is provided.

Das erfindungsgemäße Verfahren führt zu einer sehr festen Verbindung, und zwar auch dann, wenn z.B. das zweite Formteil mit der Nut relativ dünn ausgebildet ist und aus Kunststoff besteht. Das heißt, erfindungsgemäß können auch in einem solchen Fall die beiden Teile mit einer geringen Bauhöhe fest miteinander verbunden werden.The method according to the invention leads to a very firm connection, even if e.g. the second molding with the groove relative is thin and made of plastic. This means, According to the invention, the two parts can also be used in such a case a low height can be firmly connected.

So kann nach dem erfindungsgemäßen Verfahren beispielsweise die Führung für das Schiebedach eines Kraftfahrzeuges befestigt werden. Dazu wird ein Rahmen verwendet, der in die entsprechende Dachöffnung einsetzbar ist und z.B. aus glasfaserverstärktem Thermoplast (GFT) besteht. Der sich in Fahrzeuglängsrichtung erstreckende Teil des GFT-Rahmens ist dabei an seiner Oberseite mit der Rippe versehen. Die Führung ist auf der Oberseite einer Profilleiste vorgesehen, welche beispielsweise aus Polyamid besteht und an der Unterseite eine Nut aufweist. Nach Ein­ stecken der Rippe in die Nut, gegenseitiges Vibrieren von Rahmen und Profilleiste in Rippen- bzw. Nutlängsrichtung mit einer Vibrationsweg­ lange von z.B. 1 bis 2 mm zur Erwärmung der Rippe durch Reibungswärme, bis sie an der Oberfläche weich wird, und Pressen der beiden Teile gegeneinander, wird dann die erfindungsgemäße Verbindung erhalten. Um eine Verschiebung der Profilleiste gegenüber dem Rahmen in Längsrichtung der Profilleiste zu verhindern, kann im mittleren Bereich der Profil­ leiste z.B. eine Schraube vorgesehen werden, welche die beiden Teile zusätzlich fixiert. For example, the guide for the sunroof of a motor vehicle can be attached using the method according to the invention. For this purpose, a frame is used, which can be inserted into the corresponding roof opening and consists, for example, of glass fiber reinforced thermoplastic (GFT). The part of the GFT frame which extends in the longitudinal direction of the vehicle is provided with the rib on its upper side. The guide is provided on the top of a profile strip, which consists for example of polyamide and has a groove on the underside. After inserting the rib into the groove, mutual vibration of the frame and profile strip in the longitudinal or longitudinal direction of the rib with a vibration path of long, for example 1 to 2 mm, for heating the rib by frictional heat until it softens on the surface, and pressing the two Parts against each other, the connection according to the invention is then obtained. In order to prevent displacement of the profile strip relative to the frame in the longitudinal direction of the profile strip, a screw, for example, can be provided in the central region of the profile strip, which additionally fixes the two parts.

Statt durch Vibration kann das thermoplastische Material, also in der Regel der thermoplastische Kunststoff, des ersten Bauteils mit der Rippe z.B. auch durch Ultraschall oder andere hochfrequente Schwingungen erweicht werden. Die Erwärmung mit Ultraschall kann z.B. dann vorteilhaft sein, wenn die Rippe nicht durchgehend ausgebildet ist, sondern aus kurzen Noppen oder Rippenabschnitten besteht.Instead of vibration, the thermoplastic material, that is, in the Rule of thermoplastic, the first component with the rib e.g. also by ultrasound or other high-frequency vibrations be softened. The heating with ultrasound can e.g. then be advantageous if the rib is not continuous, but consists of short pimples or rib sections.

Ein Erwärmen in einem Ofen scheidet demgegenüber normalerweise aus, weil dadurch nicht nur die Rippe, sondern das Formteil aus thermoplastischem Material als Ganzes erweicht wird und damit seine Formstabilität verliert.In contrast, heating in an oven is usually not possible because thereby not only the rib, but the molded part made of thermoplastic Material as a whole is softened and with it its dimensional stability loses.

Die Hinterschneidung der Nut kann einen im Querschnitt schwalbenschwanzförmigen Hohlraum ergeben. Es sind jedoch auch andere Hohlraumquerschnitte denkbar, z.B. pilzförmige, kreuzförmige o.dgl.. Auch kann nur auf einer Flanke der Nut eine Hinterschneidung vorgesehen sein, also z.B. ein im Querschnitt winkelförmiger Hohlraum.The undercut of the groove can have a cross-section yield dovetail-shaped cavity. However, there are others Cavity cross sections conceivable, e.g. mushroom-shaped, cross-shaped or the like .. An undercut can also be provided only on one flank of the groove be, e.g. an angular cavity in cross section.

Das Material des zweiten Formteils mit der Nut kann ein Thermoplast mit einer höheren Erweichungstemperatur als das Material das ersten Formteils mit der Rippe sein oder ein Duroplast. Auch kann das zweite Formteil mit der Nut aus Metall bestehen. Bei einem Duroplasten bzw. Metall muß dann die Zersetzungstemperatur bzw. Schmelztemperatur höher liegen als die Erweichungstemperatur des thermoplastischen Materials des ersten Bauteils mit der Rippe.The material of the second molded part with the groove can be a thermoplastic a higher softening temperature than the material the first Be molded with the rib or a thermoset. Also the second one Molded part with the groove made of metal. With a thermoset or Metal must then have a higher decomposition temperature or melting temperature lie as the softening temperature of the thermoplastic material first component with the rib.

Das erfindungsgemäße Verfahren erfordert nur einen relativ geringen manuellen Herstellungsaufwand und kann relativ leicht maschinell bzw. automatisch durchgefuhrt werden.The method according to the invention requires only a relatively small amount manual manufacturing effort and can be relatively easily machine or  be carried out automatically.

Nachstehend ist eine Ausführungsform einer erfindungsgemäß herstellbaren Verbindung anhand der Zeichnung näher erlautert. Darin zeigen jeweils schematisch und im Querschnitt Fig. 1 und Fig. 2 zwei Formteile vor bzw. nach ihrer formschlüssigen Verbindung.An embodiment of a connection that can be produced according to the invention is explained in more detail below with reference to the drawing. Therein is shown schematically and in cross section, Fig. 1 and Fig. 2, two mold parts before and after their interlocking connection.

Gemäß Fig. 1 weist ein Formteil 1 aus thermoplastischem Kunststoff mit einem niedrigen Erweichungspunkt eine Rippe 2 auf, wobei die Rippe 2 in eine Nut 3 eines zweiten Bauteils 4 gesteckt ist. Das zweite Bauteil 4 weist einen höheren Erweichungs- bzw. Schmelzpunkt auf als das thermoplastische Material des ersten Formteils 1.Referring to FIG. 1, a mold 1 made of thermoplastic material with a low softening point, a rib 2, wherein the rib is inserted into a groove 3 of a second component 2 4. The second component 4 has a higher softening or melting point than the thermoplastic material of the first molded part 1 .

Die Nut 3 weist an beiden Flanken Hinterschneidungen 5, 6 unter Bildung eines im Querschnitt schwalbenschwanzförmigen Hohlraums 7 auf. Beiderseits der Rippe 2 ist das Formteil 1 mit Rillen 8, 9 versehen.The groove 3 has undercuts 5 , 6 on both flanks, forming a cavity 7 which is dovetail-shaped in cross section. The molded part 1 is provided with grooves 8 , 9 on both sides of the rib 2 .

Die Formteile 1, 4 werden gegenüber einander in Längsrichtung der Rippe 2 bzw. Nut 3 in Vibrationsbewegung versetzt, wodurch aufgrund der erzeugten Reibungswärme die Rippe 2 aus dem bei relativ niedrigerer Temperatur erweichenden Thermoplasten an ihrer Oberfläche erweicht. Zugleich wird, wie durch den Pfeil F angedeutet, das Teil 4 gegen das Teil 1 gedrückt.The molded parts 1 , 4 are set in vibration movement relative to one another in the longitudinal direction of the rib 2 or groove 3 , as a result of which the rib 2 softens on its surface from the thermoplastic softening at a relatively lower temperature due to the frictional heat generated. At the same time, as indicated by arrow F , part 4 is pressed against part 1 .

Auf diese Weise wird, wie in Fig. 2 veranschaulicht, die Rippe 2 deformiert oder gestaucht, wodurch sie in den Hohlraum 7 gedrückt wird und die beiden Teile 1, 4 mit ihren Flächen 10, 11 zur Anlage kommen. Nach dem Abkühlen unter die Erweichungstemperatur des thermoplastischen Materials des Formteils 1 entsteht damit eine feste Verbindung zwischen den beiden Teilen 1, 4.In this way, as illustrated in FIG. 2, the rib 2 is deformed or compressed, as a result of which it is pressed into the cavity 7 and the two parts 1 , 4 come to rest with their surfaces 10 , 11 . After cooling below the softening temperature of the thermoplastic material of the molded part 1 , a firm connection is created between the two parts 1 , 4 .

Wenn die zumindest an der Oberfläche erweichte Rippe 2 in den durch die Hinterschneidungen 5, 6 gebildeten Hohlraum 7 der Nut 3 gedruckt wird, kann Material 12 von den Seitenflächen 13, 14 der Rippe 2 abgeschabt werden. Die Rillen 8, 9 dienen zur Aufnahme des abgeschabten Materials 12. Das heißt, die Rillen 8, 9 verhindern, daß Material 12 zwischen die Flachen 8, 9 der beiden Formteile 1, 4 gelangt und dort beispielsweise die maßgenaue Fügung verhindert.If the rib 2 , which is softened at least on the surface, is printed into the cavity 7 of the groove 3 formed by the undercuts 5 , 6 , material 12 can be scraped off the side surfaces 13 , 14 of the rib 2 . The grooves 8 , 9 serve to receive the scraped-off material 12 . That is, the grooves 8 , 9 prevent material 12 from getting between the surfaces 8 , 9 of the two molded parts 1 , 4 and preventing, for example, the accurate joining there.

Claims (7)

1. Verfahren zum formschlüssigen Verbinden zweier Formteile, wobei zumindest eines der Formteile aus einem thermoplastischen Material besteht, dadurch gekennzeichnet, daß das thermoplastische Material, das man für das erste Formteil (1) verwendet, einen niedrigeren Erweichungspunkt aufweist als das zweite Formteil (4), das zweite Formteil (4) mit einer Nut (3), welche eine Hinterschneidung (5, 6) aufweist, und das erste Formteil (1) mit einer in die Nut (3) steckbaren Rippe (2) versehen wird, und die Rippe (2) zumindest in ihrem Oberflächenbereich bis zur Erweichung des thermoplastischen Materials erwärmt und die beiden Formteile (1, 4) gegeneinander gepreßt werden, um die Rippe (2) in den durch die Hinterschneidung (5, 6) gebildeten Hohlraum (7) zu drücken.1. A method for the positive connection of two molded parts, at least one of the molded parts consisting of a thermoplastic material, characterized in that the thermoplastic material used for the first molded part ( 1 ) has a lower softening point than the second molded part ( 4 ) , the second molded part ( 4 ) with a groove ( 3 ), which has an undercut ( 5 , 6 ), and the first molded part ( 1 ) with a rib ( 2 ) which can be inserted into the groove ( 3 ), and the rib ( 2 ) heated at least in their surface area until the thermoplastic material softens and the two molded parts ( 1 , 4 ) are pressed against one another in order to press the rib ( 2 ) into the cavity ( 7 ) formed by the undercut ( 5 , 6 ) . 2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß das thermoplastische Material des ersten Formteils (1) durch Vibration der Formteile (1, 4) gegenüber einander in Längsrichtung der Rippe (2) bzw. Nut (3) oder durch Ultraschall erweicht wird.2. The method according to claim 1, characterized in that the thermoplastic material of the first molded part ( 1 ) by vibration of the molded parts ( 1 , 4 ) relative to each other in the longitudinal direction of the rib ( 2 ) or groove ( 3 ) or by ultrasound. 3. Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Nut (3) mit einer Hinterschneidung (5, 6) versehen wird, welche einen schwalbenschwanzförmigen Hohlraum (7) ergibt.3. The method according to claim 1 or 2, characterized in that the groove ( 3 ) is provided with an undercut ( 5 , 6 ) which results in a dovetail-shaped cavity ( 7 ). 4. Verfahren nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, daß das erste Formteil (1) beiderseits der Rippe (2) jeweils mit einer Rille (8, 9) versehen wird, welche beim Pressen der beiden Formteile (1, 4) gegeneinander von den Seitenflächen (13, 14) der Rippe (2) abgeschabtes Material (12) aufnehmen. 4. The method according to any one of the preceding claims, characterized in that the first molded part ( 1 ) on both sides of the rib ( 2 ) is each provided with a groove ( 8 , 9 ), which when pressing the two molded parts ( 1 , 4 ) against each other the scraped material ( 12 ) on the side surfaces ( 13 , 14 ) of the rib ( 2 ). 5. Verfahren nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, daß für das zweite Formteil (4) ein thermoplastisches Material mit einem höheren Erweichungspunkt als das erste Formteil (1), ein duroplastisches Material oder ein Metall verwendet wird.5. The method according to any one of the preceding claims, characterized in that a thermoplastic material with a higher softening point than the first molded part ( 1 ), a thermosetting material or a metal is used for the second molded part ( 4 ). 6. Verfahren nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, daß für das erste Formteil (1) ein glasfaserverstärkter Thermoplast verwendet wird.6. The method according to any one of the preceding claims, characterized in that a glass fiber reinforced thermoplastic is used for the first molded part ( 1 ). 7. Verfahren nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, daß die beiden Formteile (1, 4) in Längsrichtung der Rippe (2) bzw. Nut (3) an einem mittleren Abschnitt unverschiebbar miteinander verbunden sind.7. The method according to any one of the preceding claims, characterized in that the two molded parts ( 1 , 4 ) in the longitudinal direction of the rib ( 2 ) or groove ( 3 ) are non-displaceably connected to one another at a central section.
DE19883835640 1988-10-19 1988-10-19 Method of positively connecting two mouldings Withdrawn DE3835640A1 (en)

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Cited By (10)

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Publication number Priority date Publication date Assignee Title
DE9107174U1 (en) * 1991-06-11 1991-07-25 Behr Gmbh & Co, 7000 Stuttgart, De
DE4244017A1 (en) * 1992-12-24 1994-06-30 Behr Gmbh & Co Heat exchanger for heavy vehicle having improved weld
FR2713540A1 (en) * 1993-12-13 1995-06-16 Orbey Plastiques Ind Hidden weld joint for hollow parts
DE19948515A1 (en) * 1999-10-08 2001-04-12 Bielomatik Leuze & Co Joining unit for adhesive seams, especially vibration welding
WO2001054864A1 (en) * 2000-01-27 2001-08-02 Wolfcraft Gmbh Clamp clip comprising a handle zone that is coated with soft synthetic material
DE10228312A1 (en) * 2002-06-25 2004-01-22 Delphi Technologies, Inc., Troy Hot press method for joining a thermoplastic component to a second component involves heating the first component in an initial contact position then compression of the first against second component
DE19719363B4 (en) * 1996-05-14 2004-08-05 Mitsubishi Jidosha Kogyo K.K. Resin composite assembly
DE10313611A1 (en) * 2003-03-26 2004-10-07 Branson Ultraschall Niederlassung Der Emerson Technologies Gmbh & Co Flat composite product comprises partly cross-linked thermosetting resin part and fiber reinforced thermoplastic part joined by heat generation at the interface
DE102008036605A1 (en) * 2008-08-06 2010-02-11 Trw Automotive Gmbh Method for assembly of belt buckle shell housing, involves providing two lock housing half shells made of plastic with joining surfaces
WO2017005720A1 (en) * 2015-07-06 2017-01-12 Multimaterial-Welding Ag Bonding objects together

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GB1269155A (en) * 1968-06-20 1972-04-06 Philip Morris Inc Method of connecting a first body to a second body in captive but independently rotatable assembly
CH633478A5 (en) * 1977-10-04 1982-12-15 Hartmann & Co W Process for producing composite sectional bars and web section used for this

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1269155A (en) * 1968-06-20 1972-04-06 Philip Morris Inc Method of connecting a first body to a second body in captive but independently rotatable assembly
CH633478A5 (en) * 1977-10-04 1982-12-15 Hartmann & Co W Process for producing composite sectional bars and web section used for this

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9107174U1 (en) * 1991-06-11 1991-07-25 Behr Gmbh & Co, 7000 Stuttgart, De
DE4244017A1 (en) * 1992-12-24 1994-06-30 Behr Gmbh & Co Heat exchanger for heavy vehicle having improved weld
DE4244017B4 (en) * 1992-12-24 2005-06-23 Behr Gmbh & Co. Kg Heat exchangers, in particular for motor vehicles
FR2713540A1 (en) * 1993-12-13 1995-06-16 Orbey Plastiques Ind Hidden weld joint for hollow parts
DE19719363B4 (en) * 1996-05-14 2004-08-05 Mitsubishi Jidosha Kogyo K.K. Resin composite assembly
DE19948515A1 (en) * 1999-10-08 2001-04-12 Bielomatik Leuze & Co Joining unit for adhesive seams, especially vibration welding
US6588970B1 (en) 1999-10-08 2003-07-08 Bielomatik Leuze Gmbh + Co. Jointing unit for bonding seams, particularly vibration welds
WO2001054864A1 (en) * 2000-01-27 2001-08-02 Wolfcraft Gmbh Clamp clip comprising a handle zone that is coated with soft synthetic material
DE10228312A1 (en) * 2002-06-25 2004-01-22 Delphi Technologies, Inc., Troy Hot press method for joining a thermoplastic component to a second component involves heating the first component in an initial contact position then compression of the first against second component
DE10313611A1 (en) * 2003-03-26 2004-10-07 Branson Ultraschall Niederlassung Der Emerson Technologies Gmbh & Co Flat composite product comprises partly cross-linked thermosetting resin part and fiber reinforced thermoplastic part joined by heat generation at the interface
DE102008036605A1 (en) * 2008-08-06 2010-02-11 Trw Automotive Gmbh Method for assembly of belt buckle shell housing, involves providing two lock housing half shells made of plastic with joining surfaces
WO2017005720A1 (en) * 2015-07-06 2017-01-12 Multimaterial-Welding Ag Bonding objects together
US10807313B2 (en) 2015-07-06 2020-10-20 Woodwelding Ag Bonding objects together

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