DE3209920A1 - Plastic part with at least one threaded insert or attachment having an internal or external thread as well as a process for producing such a plastic part - Google Patents

Plastic part with at least one threaded insert or attachment having an internal or external thread as well as a process for producing such a plastic part

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Publication number
DE3209920A1
DE3209920A1 DE19823209920 DE3209920A DE3209920A1 DE 3209920 A1 DE3209920 A1 DE 3209920A1 DE 19823209920 DE19823209920 DE 19823209920 DE 3209920 A DE3209920 A DE 3209920A DE 3209920 A1 DE3209920 A1 DE 3209920A1
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DE
Germany
Prior art keywords
plastic part
plastic
thread
part according
internal
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.)
Granted
Application number
DE19823209920
Other languages
German (de)
Other versions
DE3209920C2 (en
Inventor
Kurt Dipl.-Ing. 7300 Esslingen Stoll
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.)
Festo Maschinenfabrik Gottlieb Stoll Firma
Original Assignee
Festo Maschinenfabrik Gottlieb Stoll Firma
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Filing date
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Application filed by Festo Maschinenfabrik Gottlieb Stoll Firma filed Critical Festo Maschinenfabrik Gottlieb Stoll Firma
Priority to DE19823209920 priority Critical patent/DE3209920A1/en
Publication of DE3209920A1 publication Critical patent/DE3209920A1/en
Application granted granted Critical
Publication of DE3209920C2 publication Critical patent/DE3209920C2/de
Granted legal-status Critical Current

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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
    • B29C66/40—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
    • B29C66/47—Joining single elements to sheets, plates or other substantially flat surfaces
    • B29C66/474—Joining single elements to sheets, plates or other substantially flat surfaces said single elements being substantially non-flat
    • 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
    • B29C65/64—Joining a non-plastics element to a plastics element, e.g. by force
    • 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
    • B29C66/302—Particular design of joint configurations the area to be joined comprising melt initiators
    • B29C66/3022—Particular design of joint configurations the area to be joined comprising melt initiators said melt initiators being integral with at least one of the parts to be joined
    • B29C66/30223—Particular design of joint configurations the area to be joined comprising melt initiators said melt initiators being integral with at least one of the parts to be joined said melt initiators being rib-like
    • 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
    • B29C66/721—Fibre-reinforced materials
    • 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
    • B29C66/721—Fibre-reinforced materials
    • B29C66/7214—Fibre-reinforced materials characterised by the length of the fibres
    • B29C66/72141—Fibres of continuous length
    • 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
    • B29C66/7315—Mechanical properties
    • B29C66/73151—Hardness
    • B29C66/73152—Hardness of different hardness, i.e. the hardness of one of the parts to be joined being different from the hardness of the other part
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D1/00—Producing articles with screw-threads
    • 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
    • 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
    • B29C65/64—Joining a non-plastics element to a plastics element, e.g. by force
    • B29C65/645—Joining a non-plastics element to a plastics element, e.g. by force using friction or 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
    • B29C66/70—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
    • B29C66/70—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
    • B29C66/721—Fibre-reinforced materials
    • B29C66/7212—Fibre-reinforced materials characterised by the composition of the fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2101/00—Use of unspecified macromolecular compounds as moulding material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2023/00—Tubular articles

Abstract

A plastic part is concerned, in particular consisting of soft plastic material and with at least one threaded insert or attachment having an internal or external thread, for example for pneumatic equipment. In this case, the threaded insert or attachment (22) is formed from hard plastic material, for example from glass-fibre or carbon-fibre reinforced plastic and is pressed into a bore of the body of the plastic part of soft plastic material. The threaded insert or attachment is connected gas-tightly and firmly to the surrounding wall. In addition, a process for producing such a plastic part is concerned. In the production operation, for example when injection-moulding the plastic part at the point of the plastic part at which the thread is to be formed on the finished plastic part, a clearance or an opening is produced, the diameter of which is greater in the case of an internal thread than the diameter of the cylinder defined by the internal thread. After completion of the plastic part, a bushing of a complementary shape with respect to the opening and having the required internal thread, and in the case of the external thread a threaded bolt with the required thread and with a portion complementary to the opening, are pressed into the produced opening or into the clearance and bonded gas-tightly and firmly to the plastic part, for example by ultrasonic welding, adhesion or in some other way.

Description

Kunststoffteil mit mindestens einem Innen- oder Aussen-Plastic part with at least one inner or outer

gewinde besitzenden Gewindeeinsatz oder -ansatz sowie Verfahren zum Herstellen eines solchen Kunststoffteiles. Die Erfindung betrifft ein insbesondere aus weichem Kunststoffmaterial bestehendes Kunststoffteil mit mindestens einem Innen- oder Aussengewinde besitzenden Gewindeeinsatz oder ansatz z.B. für pneumatische Geräte.thread-owning threaded insert or shoulder and method for Manufacture of such a plastic part. The invention relates in particular to made of soft plastic material plastic part with at least one inner or male thread insert or attachment e.g. for pneumatic Devices.

Die Herstellung von Kunststoffteilen kann im wesentlichen auf mechanischem Wege, indem die erstarrte Kunststoffmasse mechanisch bearbeitet wird, oder durch Spritzen erfolgen. Eine Vielzahl von Bauteilen aus Kunststoffmaerial wird in der Pneumatik oder Hydraulik für verschiedene Zwecke verwendet, z.B. als Ventil usw. Hierbei ist es des öfteren der Fall, daß bei Bauteilen, bei denen die Abdichtung eine Rolle spielt z.B. bei Ventilen, und die aus relativ weichem Kunststoff, z.B. Polyamid oder Polyurethan hergestellt werden, ein Gewinde auszubilden ist, das in einer Trennwand, die Räume unterschiedlicher Drücke zu trennen hat, herzustellen ist Es hat sich jedoch erwiesen, daß das Einschneiden vom Gewinde in aus weichem Kunststoff hergestellte Bauteile Probleme hinsichtlich der Stabilität und Maßhaltigkeit ergibt, und bei der Verbindung mit anderen Bauteilen z.B. über Schraubverbindungen eine Leckage entstehen kann. Wenn nach der Erstarrung des Spritzlings an der vorgesehenen Stelle ein Gewinde eingeschnitten wird, muß mit erheblichen Ungenauigkeiten gerechnet werden da ein Gewinde in Kunststoff nur mit großen Toleranzen ausgebildet werden kann, was bei gasdichten Verbindungen unerwünscht ist.The manufacture of plastic parts can essentially be done mechanically Ways in which the solidified plastic mass is mechanically processed, or through Syringes are done. A large number of components made of plastic material are used in the Pneumatics or hydraulics used for various purposes, e.g. as a valve, etc. Here it is often the case that with components in which the seal plays a role e.g. with valves, and those made of relatively soft plastic, e.g. Polyamide or polyurethane are made to form a thread that is in a partition wall that has to separate rooms with different pressures However, it has been found that cutting the thread in components made of soft plastic, problems with stability and dimensional accuracy, and when connecting to other components, e.g. via Screw connections can cause a leak. If after solidification of the molding a thread is cut at the intended point must be considerable Inaccuracies are expected because a thread in plastic only has large tolerances can be formed, which is undesirable in gas-tight connections.

Wollte man in bestimmten Fällen Abhilfe schaffen, indem man das eigentliche Gewinde aus einer Metallhülse herstellt, die mit Kunststoff umspritzt wird, könnte der Nachteil auftreten, daß auch in diesen Fällen gasundichte Verbindungsstellen zwischen der metallischen Hülse und dem gespritzten Kunststoff vorhanden sein können, abgesehen davon, daß ein weiterer Nachteil in der kostenintensiven Herstellung zu sehen ist, die z.B. ihren Grund in dem zeitraubenden Einlegen der einzelnen Metallhülsen in das geöffnete Werkzeug bei stillstehender Maschine haben kann.If you wanted to remedy certain cases by doing the actual Manufactures thread from a metal sleeve that is overmolded with plastic, could the disadvantage arise that in these cases, too, gas-leaky connection points may be present between the metallic sleeve and the injection-molded plastic, apart from that, another disadvantage in the costly production can be seen, which e.g. its reason in the time-consuming insertion of the individual metal sleeves into the open mold when the machine is at a standstill.

Ausgehend vom obigen Stand der Technik, liegt der Erfindung die Aufgabe zugrunde, ein Kunststoffteil mit Gewinde z.B. für pneumatische Geräte, das z.B. durch Spritzen herstellbar ist, vorzuschlagen, bei dem das Gewinde kleine Toleranzen aufweist und in Verbindung mit anderen Bauteilen praktisch eine gasdichte Verbindung gewährleistet und trotz alledem die Herstellung sehr kostengünstig ist.Based on the above prior art, the object of the invention is is based on a plastic part with a thread, e.g. for pneumatic devices, which e.g. can be produced by injection molding, in which the thread has small tolerances has and in connection with other components practically a gas-tight connection guaranteed and despite all this, the production is very inexpensive.

Des weiteren hat sich die Erfindung die Aufgabe gestellt, ein Verfahren zum Herstellen eines Kunststoffteiles mit einem derartigen Gewinde vorzuschlagen.Another object of the invention is to provide a method to propose for the production of a plastic part with such a thread.

Die gestellte Aufgabe wird erfindungsgemäß dadurch gelöst, daß der Gewindeeinsatz oder -ansatz aus hartem Kunststoffmaterial, z.B. aus glas- oder kohlenfaserverstärktem Kunststoff besteht und in eine Bohrung des Körpers des Kunststoffteiles aus weichem Kunststoffmaterial eingepresst und hierbei mit der umgebenden Wand gasdicht und fest verbunden ist. Ein derartiges Kuststoffteil wird erfindungsgemäß so hergestellt, daß beim Herstellungsvorgang, z.B. beim Spritzen des Kunststoffteiles an der Stelle des Kunststoffteiles, an der beim fertigen Kunststoffteil das Gewinde ausgebildet sein soll, ein Durchbruch oder eine Ausnehmung hergestellt wird, dessen bzw. deren Durchmesser im Falle eines Innengewindes größer ist als der Durchmesser des durch das Innengewinde definierten Zylinders, daß nach der Fertigstellung des Kunststoffteiles eine Büchse mit komplementärer Gestalt zur Ausnehmung und mit erforderlichem Innengewinde und im Falle des Aussengewindes ein Gewindebolzen mit erforderlichem Gewinde und mit einer zur Ausnehmung komplementären Partie in die hergestellte Ausnehmung bzw. in den Durchbruch eingepreßt und mit dem Kunststoffteil z.B. durch Ultraschallschweißen, Kleben oder auf andere Art gasdicht und fest verbunden wird.The object is achieved according to the invention in that the Thread insert or shoulder made of hard plastic material, e.g. made of glass or carbon fiber reinforced There is plastic and in a bore in the body of the plastic part made of soft Plastic material pressed in and in this case gas-tight and with the surrounding wall is firmly connected. Such a plastic part is produced according to the invention in such a way that that during the manufacturing process, e.g. when injecting the plastic part at the point of the plastic part on which the thread is formed in the finished plastic part should be, a breakthrough or a recess is made, whose or Diameter in the case of an internal thread is larger than the diameter of the through the internal thread defined cylinder that after the completion of the plastic part a sleeve with a shape complementary to the recess and with the required internal thread and in the case of the external thread a threaded bolt with the required thread and with a part that is complementary to the recess in the recess or pressed into the opening and with the plastic part e.g. by ultrasonic welding, Gluing or otherwise gas-tight and firmly connected.

Auf die oben beschriebene Weise erhält man Kunststoffteile mit Gewinde, das in verschraubtem Zustand luftdicht ist, bei dem die Festigkeit fast so gut wie beim Metall ist, dessen Herstellung billiger als bei Metall ist, da man nicht teuere Maschinen stillstehen lassen muß zum Einlegen der Metallteile in die offenstehende Werkzeugform.In the manner described above, threaded plastic parts are obtained, which is airtight when screwed together, where the strength is almost as good as with metal, the production of which is cheaper than with metal, since it is not expensive The machine must stand still to insert the metal parts into the open Tool shape.

Die Herstellung erfindungsgemäßer Kunststoffteile ist auch deswegen kostengünstiger als bei den bekannten Kunststoffteilen weil das Einpressen und Ultraschallschweißen der Gewindebüchse gleichzeitig erfolgen können, wobei auch besondere Gummidichtungen, z.B. O-Ring, wie sie üblicherweise bei Metallbüchsen verwendet werden, eingespannt werden können.The production of plastic parts according to the invention is also for this reason cheaper than with the known plastic parts because the press-fit and ultrasonic welding the threaded bushing can be done at the same time, with special rubber seals, E.g. O-rings, as they are usually used in metal bushings, clamped can be.

Weitere vorteilhafte Ausbildungen der Erfindung gehen aus den Unteransprüchen hervor.Further advantageous developments of the invention are given in the subclaims emerged.

Dadurch,daß das Kunststoffteil Ausnehmungen oder Durchbrüche besitzt, in welche die Büchse bzw. der Stift formschlüssig einpassbar ist, wobei sich die Ausnehmungen oder Durchbrüche in Richtung des Kunststoffteiles verjüngen können und zweckmässigerweise die Form eines abgestuften Zylinders besitzen, wird eine einfache Führung der Büchse bzw. des Stiftes in der Ausnehmung bzw. dem Durchbruch erreicht, wobei im gleichen Schritt die erforderliche gasdichte Verbindung z.B.Because the plastic part has recesses or openings, into which the sleeve or the pin can be fitted in a form-fitting manner, the Recesses or openings can taper in the direction of the plastic part and expediently have the shape of a stepped cylinder, is a simple guidance of the bushing or the pin in the recess or the opening achieved, whereby in the same step the required gas-tight connection e.g.

durch Ultraschallschweißen hergestellt werden kann. Bei Kunststoffteilen bzw. Gewinden, die beim Verbinden bzw. im Betrieb höheren Krafteinwirkungen ausgesetzt sein können, ist es zweckmässig, daß die Ausnehrunger oder Durchbrüche sowie die Büchsen bzw. die Stifte die Form eines Vielkantes, vorzugsweise eines Vierkantes besitzen, wobei die Innenwände der Ausnehmungen bzw. Aussenfläche der Büchsen bzw.can be made by ultrasonic welding. With plastic parts or threads that are exposed to higher forces during connection or operation can be, it is appropriate that the Ausnehrunger or breakthroughs as well as the Bushings or the pins have the shape of a polygon, preferably a square have, the inner walls of the recesses or outer surface of the sleeves or

der Stifte glatte gegeneinanderstossende Flächen besitzen können.the pins can have smooth butting surfaces.

Somit wird sowohl eine form- als auch eine kraftschlüssige Verbindung zwischen der Büchse und der Ausnehmung auf einfache Weise hergestellt.This creates both a form-fitting and a force-fitting connection made between the sleeve and the recess in a simple manner.

Die gewünschte Gasdichtheit zwischen der Büchse bzw. dem Stift und der Ausnehmung bzw. dem Durchbruch kann vorteilhafterweise z.B. so hergestellt sein, daß die Büchse bzw. der Stift an ihrer bzw. seiner dem Kunststoffteil zugewandten Axialseite eine endlose, rund um die Aussenseite sich erstreckende Rippe besitzt, die im eingebauten Zustand der Büchse bzw. des Stiftes an der der Rippe gegenüberliegenden Seite des Kunststoffteiles gleichmässig aufliegt.The desired gas tightness between the sleeve or the pin and the recess or the opening can advantageously be made, for example, that the sleeve or the pin facing the plastic part on her or his Axial side has an endless rib extending around the outside, those in the installed state of the bushing or the pin on the one opposite the rib Side of the plastic part rests evenly.

Die Verbindungsstelle zwischen der Rippe und dem Kunststoffteil eignet sich besonders gut für die eigentliche Verbindung zwischen der Büchse und dem Kunststoffteil, die durch Ultraschallschweißen hergestellt wird.The junction between the rib and the plastic part is suitable particularly good for the actual connection between the bushing and the plastic part, which is made by ultrasonic welding.

Nachstehend wird die Erfindung anhand eines Ausführungsbeispieles unter Bezugnahme auf die beiliegende Zeichnung näher erläutert: In dieser zeigt die einzige Figur einen axialen Schnitt durch ein Kunststoffteil mit einer Büchse.The invention is described below using an exemplary embodiment explained in more detail with reference to the accompanying drawing: In this shows the only figure shows an axial section through a plastic part with a sleeve.

In der Zeichnung ist mit 10 ein Kunststoffteil mit einem Durchbruch 12 dargestellt. Dieser Durchbruch 12 weist in Richtung des Pfeiles 14 eine Durchmessererweiterung auf. Diese Durchmessererweiterung ist durch drei Stufen 16,18,20 hergestellt. In dieser Durchmessererweiterung ist eine Büchse 22 angeordnet, die komplementäre Gestalt zur Durchmessererweiterung des Durchbruches 12 besitzt. Der zylindrische Innenteil der Büchse 22 ist mit dem erforderlichen Gewinde 26 versehen. An der einen axialen, in Richtung des Kunststoffteiles 1o weisenden Seite 40oder Büchse 22 ist eine endlose, rund um die Aussenseite 40 sich erstreckende Rippe 42 ausgebildet, die mit der gegenüberliegenden Stufe 20 des Kunststoffteiles lo im ganzen Umfang in Beruhrung ist. Durch diese Rippe 42 ist eine gasdichte Verbindung zwischen der Büchse 22 und dem Kunststoffteil herstellbar, in dem die beiden Teile lo und 22 z.B. durch Ultraschallschweißen verbunden werden. Es ist also ein Kunststoffteil mit Gewinde zu erkennen, wobei das eigentliche Kunststoffteil lo aus relativ weichem Kunststoffmaterial, z.B. Polyamid, Polyurethan und durch Spritzen hergestellt werden kann, und die Büchse 22 aus einem harten Kunststoffmaerial, z.B. glas- oder kohlenfaserverstärktem Kunststoff bestehen kann. Somit ist gewährleistet, daß auch bei KunststoffteileX die aus weichem Kunststoffmaterial hergestellt sind, eine Gewindefestigkeit erreicht wird, wie sie z.B. bei Metall üblich ist, und die die erforderliche Dichtheit garantiert. Ein derartiges Kunststoffteil kann wie folgt hergestellt werden: Beim Herstellungsvorgang, z.B. beim Spritzen des Kunststoffteiles wird an der Stelle des Kunststoffteiles, an der beim fertigen Kunststoffteil das Gewinde ausgebildet sein soll, ein Durchbruch oder eine Ausnehmung hergestellt, deren Durchmesser, im Falle, daß ein Innengewinde hergestellt werden soll, größer ist als der Durchmesser des durch das vorgesehene Innengewinde definierten Zylinders. Nach der Herstellung und ggf. Erstarrung bzw. Auskühlung des Kunststoffteiles wird in die Ausnehmung eine Büchse 22 mit komplementärer Gestalt zur Ausnehmung und mit erforderlichem Innengewinde eingepresst und mit dem Kunststoffteil lo z.B. durch Ultraschallschweißen, Kleben oder auf andere Art verbunden.In the drawing, 10 is a plastic part with an opening 12 shown. This opening 12 has an enlarged diameter in the direction of arrow 14 on. This enlargement of the diameter is produced by three stages 16,18,20. In This enlarged diameter a sleeve 22 is arranged, the complementary shape has to enlarge the diameter of the opening 12. The cylindrical inner part the sleeve 22 is provided with the required thread 26. On one axial, in the direction of the plastic part 1o facing side 40 or sleeve 22 is an endless, around the outer side 40 extending rib 42 formed with the opposite Stage 20 of the plastic part lo is in full contact. Through this Rib 42 is a gas-tight connection between the sleeve 22 and the plastic part manufactured by connecting the two parts lo and 22 e.g. by ultrasonic welding will. So a plastic part with a thread can be seen, with the actual Plastic part lo made of a relatively soft plastic material, e.g. polyamide, polyurethane and can be manufactured by injection molding, and the sleeve 22 from a hard plastic material, e.g. glass or carbon fiber reinforced plastic. This guarantees that even with KunststoffteileX which are made of soft plastic material, a thread strength is achieved, such as is common with metal, for example, and the the required tightness guaranteed. Such a plastic part can be as follows are manufactured: During the manufacturing process, e.g. when injecting the plastic part is at the point of the plastic part where the finished plastic part has Thread is to be formed, a breakthrough or a recess is made, the diameter of which, in the event that an internal thread is to be produced, is larger is the diameter of the cylinder defined by the internal thread provided. After the production and, if necessary, the solidification or cooling of the plastic part is in the recess a sleeve 22 with a complementary shape to the recess and with required internal thread and with the plastic part lo e.g. through Ultrasonic welding, gluing or otherwise connected.

Beim Ultraschallschweißen wird die Verbindungsstelle zwischen der Büchse 22 und dem Kunststoffteil 10 über die Rippe 42 hergestelltWith ultrasonic welding, the connection point between the Bushing 22 and the plastic part 10 made via the rib 42

Claims (10)

Kunststoffteil mit mindestens einem Innen- oder Aussengewinde besitzenden Gewindeeinsatz oder -ansatz sowie Verfahren zum Herstellen eines solchen Kunststoffteiles.Plastic part with at least one internal or external thread Thread insert or shoulder and method for producing such a plastic part. Ansprüche 1. Insbesondere aus weichem Kunststoffmaterial bestehendes Kunststoffteil mit mindestens einem Innen- oder Aussengewinde besitzenden Gewindeeinsatz oder -ansatz z.B. für pneumatische Geräte, dadurch gekennzeichnet, daß der Gewindeeinsatz oder -ansatz (22) aus hartem Kunststoffmaterial, z.B. aus glas- oder kohlenfaserverstärktem Kunststoff besteht und in eine Bohrung des Körpers des Kunststoffteiles aus weichem Kunststoffmaterial eingepresst und hierbei mit der umgebenden Wand gasdicht und fest verbunden ist. Claims 1. In particular consisting of a soft plastic material Plastic part with at least one internal or external thread having a threaded insert or approach e.g. for pneumatic devices, characterized in that the threaded insert or attachment (22) made of hard plastic material, e.g. made of glass or carbon fiber reinforced There is plastic and in a bore in the body of the plastic part made of soft Plastic material pressed in and in this case gas-tight and with the surrounding wall is firmly connected. 2. Kunststoffteil nach Anspruch 1, dadurch gekennzeichnet, daß das aus weichem Kunststoffmaterial bestehende Kunststoffteil (lo) Ausnehmungen oder Durchbrüche (12) besitzt, in welche die Büchse-(22) bzw. ein Teil des Stiftes formschlüssig einpassbar ist.2. Plastic part according to claim 1, characterized in that the made of soft plastic material plastic part (lo) recesses or Has openings (12) in which the bushing (22) or part of the pin is positively locked is adaptable. 3. Kunststoffteil nach Anspruch 1, dadurch gekennzeichnet, daß sich die Ausnehmungen oder Durchbrüche (12) von aussen nach innen verjüngen.3. Plastic part according to claim 1, characterized in that the recesses or openings (12) taper from the outside inwards. 4. Kunststoffteil nach Anspruch 3, dadurch gekennzeichnet, daß die Ausnehmungen oder Durchbrüche (12) die Form eines abgestuften Zylinder besitzen.4. Plastic part according to claim 3, characterized in that the Recesses or openings (12) have the shape of a stepped cylinder. 5. Kunststoffteil nach Anspruch 3, dadurch gekennzeichnet, daß die Ausnehmungen oder Durchbrüche die Form eines Vielkantes, vorzugsweise eines Vierkantes besitzen.5. Plastic part according to claim 3, characterized in that the Recesses or openings have the shape of a polygon, preferably a square own. 6. Kunststoffteil nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß die Ausnehmungen oder Durchbrüche (12) sowie die Büchsen (22) bzw. die Stifte glatte Innenwände bzw. Aussenwände besitzen.6. Plastic part according to one of claims 1 to 5, characterized in that that the recesses or openings (12) and the sleeves (22) or the pins have smooth inner or outer walls. 7. Kunststoffteil nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß die Büchse (22) bzw. der Stift an einer Stelle ihrer bzw.7. Plastic part according to one of claims 1 to 6, characterized in that that the sleeve (22) or the pin at one point of their or seiner dem Kunststoffteil (10) zugewandten Aussenseite (40) eine endlose, rund um die Aussenseite sich erstreckende Rippe (42) besitzt, die im eingebauten Zustand der Büchse (22) bzw. des Stiftes an der der Rippe (42) gegenüberliegenden Seite (20) des Kunststoffteiles (io) gleichmässig aufliegt.its outer side (40) facing the plastic part (10) has an endless, around the outside extending rib (42) has the built-in State of the sleeve (22) or the pin on the one opposite the rib (42) Side (20) of the plastic part (io) rests evenly. 8. Kunststoffteil nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß die Rippe (42) an der dem Kunststoffteil (10) zugewandtenn Seite (40) des Bundes (48) angeordnet ist.8. Plastic part according to one of claims 1 to 7, characterized in that that the rib (42) on the plastic part (10) facing side (40) of the federal government (48) is arranged. 9. Kunststoffteil nach einem der Ansprüche 7 bis 8, dadurch gekennzeichnet, daß die Rippe (42) der einen z.B. durch Ultraschallschweißen hergestellten Schweißnaht zugeordnet ist.9. Plastic part according to one of claims 7 to 8, characterized in that that the rib (42) of the one weld made, for example, by ultrasonic welding assigned. 10. Kunststoffteil nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, daß die Büchse (22) drei Stufen (16,18,20) besitzt.10. Plastic part according to one of claims 1 to 9, characterized in that that the sleeve (22) has three stages (16,18,20). Verfahren zum Herstellen eines Kunststoffteiles nach einem der Ansprüche 1 bis 10, dadurch gekennzeichnet, daß beim Herstellungsvorgang, z.B. beim Spritzen des Kunststoffteiles an der Stelle des Kunststoffteiles, an der beim fertigen Kunststoffteil das Gewinde ausgebildet sein soll, ein Durchbruch oder eine Ausnehmung hergestellt wird, dessen bzw. deren Durchmesser im Falle eines Innengewindes größer ist als der Durchmesser des durch das Innengewinde definierten Zylinders, daß nach der Fertigstellung des Kunststoffteiles eine Büchse mit komplementärer Gestalt zur Ausnehmung und mit erforderlichem Innengewinde und im Falle des Aussengewindes ein Gewindebolzen mit erforderlichem Gewinde und mit einer zur Ausnehmung komplementären Partie in die hergestellte Ausnehmung bzw. in den Durchbruch eingepreßt und mit dem Kunststoffteil z.B. durch UItraschallschweißen, Kleben oder auf andere Art gasdicht und fest verbunden wird.Method for producing a plastic part according to one of the claims 1 to 10, characterized in that during the manufacturing process, e.g. during injection molding of the plastic part at the point of the plastic part at that of the finished plastic part the thread is to be formed, a breakthrough or a recess is made whose diameter is greater than in the case of an internal thread the diameter of the cylinder defined by the internal thread, that after completion of the plastic part a sleeve with a complementary shape to the recess and with required internal thread and in the case of the external thread a threaded bolt with Required thread and with a complementary part to the recess in the produced recess or pressed into the opening and with the plastic part E.g. by ultrasonic welding, gluing or other gas-tight and firmly connected will.
DE19823209920 1982-03-18 1982-03-18 Plastic part with at least one threaded insert or attachment having an internal or external thread as well as a process for producing such a plastic part Granted DE3209920A1 (en)

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DE19823209920 DE3209920A1 (en) 1982-03-18 1982-03-18 Plastic part with at least one threaded insert or attachment having an internal or external thread as well as a process for producing such a plastic part

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DE19823209920 DE3209920A1 (en) 1982-03-18 1982-03-18 Plastic part with at least one threaded insert or attachment having an internal or external thread as well as a process for producing such a plastic part

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DE3209920A1 true DE3209920A1 (en) 1983-09-29
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WO1995000764A1 (en) * 1993-06-22 1995-01-05 The Fastron Company Method and insert for connecting components to plastic members
WO1995001513A1 (en) * 1993-06-29 1995-01-12 Unimation, Inc. Insert for connecting components to plastic members
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DE102013202583B3 (en) * 2013-02-18 2014-07-03 Böllhoff Verbindungstechnik GmbH Friction welding element, housing and connection method for the friction welding element with a housing

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DE3936534C2 (en) * 1988-11-02 1999-04-15 Kitagawa Ind Co Ltd Sealant and its use
DE3936534A1 (en) * 1988-11-02 1990-05-17 Kitagawa Ind Co Ltd SEALING MATERIAL WITH MIXED CARBON FIBERS
US5391031A (en) * 1992-05-22 1995-02-21 Unimation, Inc. Method and insert for connecting components to plastic members
US5672036A (en) * 1992-05-22 1997-09-30 Unimation, Inc. Weldable plastic fastener
US5697744A (en) * 1992-05-22 1997-12-16 Unimation, Inc. Method and insert for connecting components to plastic members
US5879115A (en) * 1992-05-22 1999-03-09 Unimation, Inc. Method and insert for connecting components to plastic members
WO1995000764A1 (en) * 1993-06-22 1995-01-05 The Fastron Company Method and insert for connecting components to plastic members
WO1995001513A1 (en) * 1993-06-29 1995-01-12 Unimation, Inc. Insert for connecting components to plastic members
WO1996038677A1 (en) * 1995-05-30 1996-12-05 Unimation, Inc. Means for connecting components to plastic membranes
DE102007016851A1 (en) * 2007-04-10 2008-10-16 Böllhoff Verbindungstechnik GmbH Method for producing a fastening arrangement of a fastening dome on a thin-walled component
DE102011009682A1 (en) 2010-02-17 2011-08-18 Abmayr, Ute, 89312 Method for producing a screw thread receptacle
DE102011009681A1 (en) 2010-02-17 2011-08-18 Abmayr, Ute, 89312 Screw thread retainer for use as e.g. rope tensioning device, has metal films or metallic reinforcing elements including upper surface and firmly connected to barrier layer that represents adhesive agent at joint region
DE102011009682B4 (en) * 2010-02-17 2016-01-14 Ute Abmayr A method for producing a screw receiving device, and a screw thread connection, formed from a threaded fastener and a screw receiving device, and a dowel formed therefrom
DE102013202583B3 (en) * 2013-02-18 2014-07-03 Böllhoff Verbindungstechnik GmbH Friction welding element, housing and connection method for the friction welding element with a housing
US9764417B2 (en) 2013-02-18 2017-09-19 Böllhoff Verbindungstechnik GmbH Friction welding element, and a method for connecting the friction welding element to a housing
US9855624B2 (en) 2013-02-18 2018-01-02 Böllhoff Verbindungstechnik GmbH Friction welding element, and a method for connecting the friction welding element to a housing

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