DE2217318A1 - Fixing glass panels - between bonded plastic frames and back covers using hf welding - Google Patents

Fixing glass panels - between bonded plastic frames and back covers using hf welding

Info

Publication number
DE2217318A1
DE2217318A1 DE2217318A DE2217318A DE2217318A1 DE 2217318 A1 DE2217318 A1 DE 2217318A1 DE 2217318 A DE2217318 A DE 2217318A DE 2217318 A DE2217318 A DE 2217318A DE 2217318 A1 DE2217318 A1 DE 2217318A1
Authority
DE
Germany
Prior art keywords
glass pane
plastic
cover panel
anvil
welding
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Withdrawn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
DE2217318A
Other languages
German (de)
Other versions
DE2217318B2 (en
Inventor
Achim Draeger
Paul Espey
Hans Willi Heidkamp
Herbert Luhrenberg
Kurt Werres
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.)
ABB Training Center GmbH and Co KG
Original Assignee
Hartmann and Braun 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 Hartmann and Braun AG filed Critical Hartmann and Braun AG
Priority to DE19722217318 priority Critical patent/DE2217318B2/en
Publication of DE2217318A1 publication Critical patent/DE2217318A1/en
Publication of DE2217318B2 publication Critical patent/DE2217318B2/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Withdrawn legal-status Critical Current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
    • B29C66/001—Joining in special atmospheres
    • 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
    • B29C66/10—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
    • B29C66/114—Single butt 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
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/13—Single flanged joints; Fin-type joints; Single hem joints; Edge joints; Interpenetrating fingered joints; Other specific particular designs of joint cross-sections not provided for in groups B29C66/11 - B29C66/12
    • B29C66/131—Single flanged joints, i.e. one of the parts to be joined being rigid and flanged in the joint area
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/53—Joining single elements to tubular articles, hollow articles or bars
    • B29C66/534—Joining single elements to open ends of tubular or hollow articles or to the ends of bars
    • B29C66/5344—Joining single elements to open ends of tubular or hollow articles or to the ends of bars said single elements being substantially annular, i.e. of finite length, e.g. joining flanges to tube ends
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/53—Joining single elements to tubular articles, hollow articles or bars
    • B29C66/534—Joining single elements to open ends of tubular or hollow articles or to the ends of bars
    • B29C66/5346—Joining single elements to open ends of tubular or hollow articles or to the ends of bars said single elements being substantially 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
    • 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
    • B29C66/61—Joining from or joining on the inside
    • 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
    • B29C66/746—Joining plastics material to non-plastics material to inorganic materials not provided for in groups B29C66/742 - B29C66/744
    • B29C66/7465—Glass
    • 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
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/816—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the mounting of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8163—Self-aligning to the joining plane, e.g. mounted on a ball and socket
    • 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
    • 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
    • B29C66/87—Auxiliary operations or devices
    • B29C66/874—Safety measures or devices
    • B29C66/8742—Safety measures or devices for operators
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/78—Means for handling the parts to be joined, e.g. for making containers or hollow articles, e.g. means for handling sheets, plates, web-like materials, tubular articles, hollow articles or elements to be joined therewith; Means for discharging the joined articles from the joining apparatus
    • B29C65/7802—Positioning the parts to be joined, e.g. aligning, indexing or centring
    • B29C65/782—Positioning the parts to be joined, e.g. aligning, indexing or centring by setting the gap between the parts to be joined
    • B29C65/7823—Positioning the parts to be joined, e.g. aligning, indexing or centring by setting the gap between the parts to be joined by using distance pieces, i.e. by using spacers positioned between the parts to be joined and forming a part of the joint
    • B29C65/7829—Positioning the parts to be joined, e.g. aligning, indexing or centring by setting the gap between the parts to be joined by using distance pieces, i.e. by using spacers positioned between the parts to be joined and forming a part of the joint said distance pieces being integral with 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
    • 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
    • B29K2309/00—Use of inorganic materials not provided for in groups B29K2303/00 - B29K2307/00, as reinforcement
    • B29K2309/08—Glass
    • 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
    • B29K2709/00—Use of inorganic materials not provided for in groups B29K2703/00 - B29K2707/00, for preformed parts, e.g. for inserts
    • B29K2709/08—Glass
    • 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
    • B29L2011/00—Optical elements, e.g. lenses, prisms
    • B29L2011/0058—Mirrors

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Abstract

The plastic frame rests in an impression in a base block, the impression being lined with soft leather. The back cover lies on top, with the glass pane between, and the supersonic frequency electrode is mounted above the whole assembly. The base block has a spherical bearing fixed to its underside, enabling it to pivot slightly on the pressure table beneath. The device welds the frame to the back cover at low pressure without fracturing the glass.

Description

Vorrichtung zum Verbinden eines schmalen, eine Frontscheibe umfassenden Kunststoffrahmens mit einer hinter der Frontscheibc liegenden Kunststoffabdeckblende Die Erfindung bezieht sich auf eine Vorrichtung zum Verbunden eines schmalen, eine Frontscheibe umfassenden Kunststoffrahmens mit einer hinter der Frontscheibe liegenden Kunststoffabdeckblende von größerer Masse unter Anwendung von Ultrascharnlenergie.Device for connecting a narrow, comprising a front pane Plastic frame with a plastic cover panel located behind the front window The invention relates to a device for connecting a narrow, one Front window comprehensive plastic frame with a lying behind the front window Plastic masking of larger mass using ultrasonic energy.

Die Ultraschallschweißung wird bei Kunststoffteilen verschiedener Art und Größe in schnell steigendem Umfang eingesetzt. Sie ermöglicht eine erhebliche Arbeitszeiteinsparung gegenüber dem Verkleben und anderen bekannten Verbindungstechniken. Die zu verbindenden Teile müssen durch besondere Formgebung dem Ultraschallschweißverfahren angepaßt werden. Die Fachl#teratur (VDI-Taschenbuch T8, Kunststoffe II, 1965, Seite 119) fordert, daß der Abstand zwischen Sonotrode und Schweißnaht möglichst klein sein soll. Es ist daher allgemein üblich, das größere Werkstück in einer Aussparung des Amboß zu fixieren und cas Energie abstrahlende Horn auf das kleinere Werkstück auf zupressen. Bei dieser Methode wird die kleinere Masse so weit beschleunigt, daß an den Reibungsstellen mit dem größeren Werkstück ein Schweißvorgang einsetzt, der zu einer Innigen Verbindung der beiden Kunststoffteile führt.Ultrasonic welding is different for plastic parts Type and size used to a rapidly increasing extent. It enables a substantial Saving of working time compared to gluing and other known connection techniques. The too The connecting parts must be specially shaped to the Ultrasonic welding processes are adapted. The specialist literature (VDI-Taschenbuch T8, Kunststoffe II, 1965, page 119) requires that the distance between the sonotrode and weld seam should be as small as possible. It is therefore common practice to use the larger To fix the workpiece in a recess of the anvil and to emit cas energy Press the horn onto the smaller workpiece. With this method, the smaller Mass accelerated so far that at the points of friction with the larger workpiece a welding process begins, which leads to an intimate connection between the two plastic parts leads.

Der Erfindung liegt die Aufgabe zugrunde, die- für reßgeralegehäuse oder dgl. bestimmten Kunststoffrontrahmen unter Einfügung einer Frontscheibe aus Glas mit einer KunststofiaL-#eckblende zu verschweißen. Der die Glasscheibe umfassende Frcrtrahmen weist dabei nur einen Bruchteil der Masse der Xunststoffabdeckblende auf. Bei einer Schweißanordnung, bei der das Horn entsprechend der Lehre der Fachliteratur auf dem dünnen Frontrahmen aufliegt, gelang es nicht, einwandfreie Schweißverbindungen herzustellen. Eine zur Verbesserung des Schweißvorganges erforderliche Erhöhung des Anpreßdruckes führte dazu, daß ein großer Teil der Glasscheiben unter der Belastung zerbrach.The invention is based on the object of the- for reßgeralegehäuses or the like. Specific plastic front frame with the insertion of a front window Glass to be welded to a plastic corner cover. The one encompassing the pane of glass The frame has only a fraction of the mass of the plastic cover panel on. With a welding arrangement in which the horn is in accordance with the teaching of the specialist literature rests on the thin front frame, it was not possible to create perfect welded joints to manufacture. An increase required to improve the welding process the contact pressure meant that a large part of the glass panes under the load broke.

Gemäß der Erfindung werden diese Schwierigkeiten dadurch beseitigt, daß der Kunststoffrahmen in einer Aussparung des Amboß ruht nd daß das die Ultraschallenergie übertragen orn auf der Abdeckblende aufliegt.According to the invention, these difficulties are eliminated by that the plastic frame rests in a recess in the anvil and that the ultrasonic energy transferred orn rests on the cover panel.

Es gelang dabei in überraschender Weise, mit niedrigen Anpreßdrücken ausgezeichnete Schweißverbindungen herzustellen, wobei insbesondere der Ausfall durch Glasscheibenbrüche praktisch auf Null zurückging.It succeeded in a surprising way, with low contact pressures to produce excellent welded joints, especially the failure virtually reduced to zero due to broken glass.

Eine besonders vorteilhafte Weiterbildung der Erfindung besteht darin, daß der Amboß mittels eines Kugelkalottenlagers nach allen Richtungen begrenzt schwenkbar gelagert ist. Durch diese Maßnahme erreicht man über den gesamten Unfang des Werkstückes unter Eliminierung der Werkstückstoleranzen einen gleichmäßigen Anpreßdruck und damit eine gute Schweißnaht.A particularly advantageous development of the invention consists in that the anvil can be pivoted to a limited extent in all directions by means of a spherical cap bearing is stored. With this measure you can reach over the entire circumference of the workpiece while eliminating the workpiece tolerances, a uniform contact pressure and thus a good weld seam.

Eine weitere zweckmäßige Ausgestaltung der Vorrichtung besteht darin, daß die den Kunststoffrahmen aufnehmende Aussparung des Amboß mit einem weichen Leder ausgekleidet ist. Hierdurch vermeidet man jede Beschädigung der Ansichtfläche des Kunststoffrahmens.Another useful embodiment of the device is that the plastic frame receiving recess of the anvil with a soft Leather is lined. This avoids any damage to the visible surface of the plastic frame.

Die Erfindung wird an Hand eines Ausführungsbeispieles gemäß Figur 1 bis 6 der Zeichnung erläutert: Figur 1 zeigt teilweise im Schnitt die Schweißvorrichtung mit eingelegtem Werkstück Figur 2 das teilweise angeschnitten Werkstück von der Seite Figur 3 einen vergrößerten Ausschnitt aus Figur 2 Figur 4 das Werkstück von oben Figur 5 und 6 vergrößerte Ausschnitte aus Figur 4.The invention is based on an embodiment according to FIG 1 to 6 of the drawing: FIG. 1 shows the welding device partially in section with inserted workpiece Figure 2 the partially cut workpiece from the Page Figure 3 shows an enlarged detail from Figure 2 Figure 4 the workpiece from above, FIGS. 5 and 6, enlarged excerpts from FIG. 4.

Einander entsprechende Teile sind mit den gleichen Bezugszeichen versehen.Corresponding parts are provided with the same reference symbols.

In Figur 1 ist mit 1 das Ultraschall abstrahlende Horn oder die Sonotrode bezeichnet. Dieses Horn ist mit dem nicht dargestellten Ultraschallerzeuger verbunden und kann hydraulisch oder pneumatisch in Richtung des Pfeilesloverstellt werden.In Figure 1, 1 is the ultrasound radiating horn or the sonotrode designated. This horn is connected to the ultrasonic generator, not shown and can be adjusted hydraulically or pneumatically in the direction of the arrow.

Der Arbeitstisch der Schweißmaschine ist mit 2 bezeichnet. Auf diesem Arbeitstisch ruht ein Amboß 3, der eine Aussparung zur Aufnahme des Werkstückes 4 aufweist. Zwischen Arbeitstisch 2 und Amboß 3 ist ein Kugelkalottenlager 5 vorgesehen, das nach allen Richtungen begrenzt schwenkbar ist. Die das Werkstück aufnehmende Aussparung des Amboß 3 ist allseitig mit weichem Leder 6 ausgekleidet. Gut bewährt hat sich hierfür normales Fensterleder.The work table of the welding machine is denoted by 2. On this one Work table rests an anvil 3, which has a recess for receiving the workpiece 4 has. A spherical cap bearing 5 is provided between work table 2 and anvil 3, which can be pivoted to a limited extent in all directions. The one receiving the workpiece The recess of the anvil 3 is lined on all sides with soft leather 6. Well proven normal chamois leather has been used for this.

Das Werkstück 4 besteht aus dem Kunststoffrahmen 4a und der Kunststoffabdeckblende 4b. Die ebene Unterseite des Hohes 1 ruht mit einstellbarem Anpreßdruck auf der Kunststoffabdeckblende 4b. Der wesentlich leichtere und flachere Kunststoffrahmen 4a liegt in der Aussparung des Amboß 3. Bei dieser Anordnung der Teile hat also die mit strichpunktierten Linien angedeutete Schweißnaht 7 einen wesentlich größerer. Abstand von dem Horn 1 als bei umgekehrter Lage der Teile. Entgegen der Lehre der Fachleute liefert die dargestellte Vorrichtung bei den zu verbindenden Teilen die einzig brauchbaren Schweissungen.The workpiece 4 consists of the plastic frame 4a and the plastic cover panel 4b. The flat bottom of the height 1 rests with adjustable contact pressure on the Plastic cover 4b. The much lighter and flatter plastic frame 4a lies in the recess of the anvil 3. With this arrangement of the parts, therefore the weld seam 7 indicated by dash-dotted lines is a much larger one. Distance from the horn 1 than when the parts are reversed. Contrary to the teaching of the Those skilled in the art provides the device shown in the parts to be connected only usable welds.

Aus Figur 2 ist zu ersehen, daß zwischen dem Kunststoffrahmen 4a und der Kunststoffabdeckblende 4b eine Glasscheibe 8 angeordnet ist. Die Glasscheibe 8 wird seitlich von einem umlaufenden Steg der Kunststoffabdeckblende 4b gehalten. Der Frontrahmen 4a liegt mit einer umlaufenden Lippe auf der Oberseite der Glasscheibe auf und dichtet sie gegen das Eindringen von Fremdkörpern ab.From Figure 2 it can be seen that between the plastic frame 4a and a glass pane 8 is arranged on the plastic cover panel 4b. The pane of glass 8 is held laterally by a circumferential web of the plastic cover panel 4b. The front frame 4a lies with a circumferential lip on the top of the glass pane and seals it against the ingress of foreign bodies.

Figur 3 zeigt einen vergrößerten Ausschnitt aus Figur 2. Der umlaufende Steg der Kunststoffabdeckblende 4b ist an einigen Stellen mit angespritzten Noppen 4c versehen, die dem Ausqleic der Außentoleranz der Glasscheibe 8 dienen. Der umlaufende Steg ist ferner an der Stelle der Schweißnaht 7 spitz zulaufend ausgebildet, so daß die Berührungsfläche zu Beginn der Schweissung sehr klein ist.FIG. 3 shows an enlarged section from FIG. 2. The circumferential The web of the plastic cover 4b has molded-on knobs in some places 4c, which serve to balance the external tolerance of the glass pane 8. The circulating one The web is also tapered to a point at the location of the weld seam 7, see above that the contact area is very small at the beginning of the weld.

Figur 4 zeigt das teilweise aufgeschnittene Werkstück von oben Der Schnitt entlang der Linien A, B, C, D entspricht der Darstellung nach Figur 2. Mit 9 sind elastische Erhebungen in der Kunststoffabdeckblende 4b bezeichnet, die dem Ausgleich der Dickentoleranz der Glasscheibe dienen.FIG. 4 shows the partially cut workpiece from above Section along lines A, B, C, D corresponds to the illustration according to FIG. 2. With 9 elastic protrusions in the plastic cover 4b are designated, which the Serve to compensate for the thickness tolerance of the glass pane.

Ein Schnitt entlang der Linie E, F ist in Figur 5 dargestellt.A section along the line E, F is shown in FIG.

Figur 6 zeigt einen Längsschnitt entlang der Linie G, H.Figure 6 shows a longitudinal section along the line G, H.

Beim Einlegen der Glasscheibe und beim Aufsetzen des Kunststoffrahmens werden die Noppen 4c bzw. die Erhebungen 9 zunächst mehr oder weniger elastisch verformt. Beim nacfolgedn Schweißvorgang werden die relativ kleinen Berührurgsf1ä.ohen des Kunststoffes mit der Glasscheibe in-folge der Reibungswar:r'.e plastisch verformt, so daß sich die Kunststoffabdeokblende 4b der Glasscheibe echt anpaßt.When inserting the glass pane and when putting on the plastic frame the knobs 4c or the elevations 9 are initially more or less elastic deformed. During the subsequent welding process, the relatively small contact areas are removed of the plastic with the glass pane was plastically deformed as a result of the friction, so that the Kunststoffabdeokblende 4b adapts to the glass pane really.

Die Energieübertragung vom Horn 1 auf das Werkstück 4 kann erheblich verbessert werden, wenn man das Horn mit einer dünnen Schicht aus Silikonpaste versieht. Diese Silikonpasve vermeidet störende Luftschichten zwischen Metall und Kunststoff und sorgt für eine gleichmäßige Schalleinleitung in das Werkstück. s ist zweckmäßig, diese Schicht nach jedem Schweißvorgang zu erneuern.The energy transfer from the horn 1 to the workpiece 4 can be considerable can be improved if you cover the horn with a thin layer of silicone paste. This silicone pass avoids disruptive layers of air between metal and plastic and ensures that the sound is evenly introduced into the workpiece. s is appropriate to renew this layer after each welding process.

Da Ultraschallerzeuger auch Frequenzen im hörbaren Bereich abstrahlen, wird das gesamte schwingende System mit einer Haube aus dämpfendem Material umgeben. Hierdurch gelingt es, die während der Schweißzeit auftretenden schrillen Geräusche auf einen nicht mehr störenden Pegel zu reduzieren.Since ultrasonic generators also emit frequencies in the audible range, the entire vibrating system is surrounded by a hood made of damping material. This makes it possible to reduce the shrill noises that occur during the welding time to reduce it to a level that is no longer disruptive.

Die Erfindung ist nicht auf das Verschweißen eines Frontrahmens mit einer Abdeckblende beschränkt. Sie kann vielmehr überall dort mit Erfolg angewandt werden, wo größere Kunststoffteile unterschiedlicher Masse oder Dicke miteinander zu verschweißen sind.The invention is not related to welding a front frame with limited to a cover panel. Rather, it can be used with success anywhere where larger plastic parts of different dimensions or thicknesses with each other are to be welded.

6 Seiten Beschreibung 7 Ansprüche 2 Blatt Zeichnungen mit 6 Figuren6 pages description 7 claims 2 sheets of drawings with 6 figures

Claims (7)

Ansprüche Vorrichtung zum Verbinden eines schmalen, eine Frontscheibe umfassenden Kunststoffrahmens mit einer hinter der Frontscheibe liegenden Kunststoffabdeckblene von größerer Masse unter Anwendung von Ultraschallenergie, dadurch gekennzeichnet, daß der Kunststoffrahmen (4a) in einer Aussparung des Amboß (3) ruht und daß das die Ultraschallenergie übertragende Horn (1) auf der Abdeckblende (4b) aufliegt.Claims device for connecting a narrow, a front pane comprehensive plastic frame with a plastic cover panel located behind the windshield of greater mass using ultrasonic energy, characterized in that, that the plastic frame (4a) rests in a recess in the anvil (3) and that the the horn (1) transmitting ultrasonic energy rests on the cover panel (4b). 2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß der Amboß (3) mittels eines Kugelkalottenlagers (5) nach allen Richtungen begrenzt schwenkbar gelagert ist.2. Apparatus according to claim 1, characterized in that the anvil (3) Can be pivoted to a limited extent in all directions by means of a spherical cap bearing (5) is stored. 3. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die den Kunststoffrahmen (4a) aufnehmende Aussparung des Amboß (3) mit einem weichen Leder (6) ausgekleidet ist.3. Apparatus according to claim 1, characterized in that the the Plastic frame (4a) receiving recess of the anvil (3) with a soft leather (6) is lined. 4. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß auf die Energie abgebende Fläche des Hornes (1) eine Silikonschicht aufgetragen ist, die der Verbesserung des Wirkungsgrades der Energieübertragung auf das Werkstück dient.4. Apparatus according to claim 1, characterized in that on the Energy-releasing surface of the horn (1) a silicone layer is applied to the serves to improve the efficiency of the energy transfer to the workpiece. 5. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß der Ultraschallerzeuger von einer hörbare Frequenzen dämpfenden Haube umgeben ist.5. Apparatus according to claim 1, characterized in that the ultrasonic generator is surrounded by an audible frequency attenuating hood. 6. In einer Vorrichtung nach den Ansprüchen 1 - 5 zu verschweißende Kunststoffabdeckblende, dadurch gekennzeichnet, daß diese Blende (4b) an der Auflagefläche der Glasscheibe (8) mit elastischen Erhebungen (9) versehen ist, die die Dickentoleranz der Glasscheibe (8) ausgleichen.6. In a device according to claims 1-5 to be welded Plastic cover panel, characterized in that this panel (4b) is on the support surface the glass pane (8) is provided with elastic elevations (9), which the thickness tolerance equalize the glass pane (8). 7. In einer Vorrichtung nach den Ansprüchen 1 - 5 zu verschweißende Kunststoffabdeckblende, dadurch gekennzeichnet, daß diese Blende (4b) im Bereich des die Glasscheibe (8) einfassenden Steges angespritzte Noppen (4c) aufweist, die die Größentoleranz der Glasscheibe (8) ausgleichen.7. In a device according to claims 1-5 to be welded Plastic cover panel, characterized in that this panel (4b) in the area of the web enclosing the glass pane (8) has molded-on knobs (4c) which compensate for the size tolerance of the glass pane (8). LeerseiteBlank page
DE19722217318 1972-04-11 1972-04-11 METHOD OF CONNECTING A PLASTIC FRAME TO A PLASTIC COVER PANEL Withdrawn DE2217318B2 (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2377266A1 (en) * 1977-01-12 1978-08-11 Polyplastics Co PROCESS FOR ASSEMBLING ELEMENTS IN DIFFERENT MATERIALS
FR2434707A1 (en) * 1978-05-30 1980-03-28 Eastman Kodak Co LAMINATE ASSEMBLY CONSISTING OF AN OBJECT AND A FRAME AND METHOD FOR THE PRODUCTION THEREOF
WO2016202624A1 (en) * 2015-06-16 2016-12-22 Pentracor Gmbh Workpiece receptacle

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2377266A1 (en) * 1977-01-12 1978-08-11 Polyplastics Co PROCESS FOR ASSEMBLING ELEMENTS IN DIFFERENT MATERIALS
FR2434707A1 (en) * 1978-05-30 1980-03-28 Eastman Kodak Co LAMINATE ASSEMBLY CONSISTING OF AN OBJECT AND A FRAME AND METHOD FOR THE PRODUCTION THEREOF
WO2016202624A1 (en) * 2015-06-16 2016-12-22 Pentracor Gmbh Workpiece receptacle
US10688606B2 (en) 2015-06-16 2020-06-23 Pentracor Gmbh Workpiece receptacle

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