DE2814077C2 - Process for welding battery housing parts made of plastic and device for carrying out this process - Google Patents
Process for welding battery housing parts made of plastic and device for carrying out this processInfo
- Publication number
- DE2814077C2 DE2814077C2 DE2814077A DE2814077A DE2814077C2 DE 2814077 C2 DE2814077 C2 DE 2814077C2 DE 2814077 A DE2814077 A DE 2814077A DE 2814077 A DE2814077 A DE 2814077A DE 2814077 C2 DE2814077 C2 DE 2814077C2
- Authority
- DE
- Germany
- Prior art keywords
- heating
- mirror
- plastic
- heating mirror
- housing parts
- 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.)
- Expired
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
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
- B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
- B29C65/20—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools with direct contact, e.g. using "mirror"
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
- B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
- B29C65/24—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools characterised by the means for heating the tool
- B29C65/26—Hot fluid
-
- 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
- B29C66/542—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 joining hollow covers or hollow bottoms to open ends of container bodies
-
- 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
-
- 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
- B29C66/818—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 cooling constructional aspects, or by the thermal or electrical insulating or conducting constructional aspects of the welding jaws or of the clamps ; comprising means for compensating for the thermal expansion of the welding jaws or of the clamps
- B29C66/8182—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 cooling constructional aspects, or by the thermal or electrical insulating or conducting constructional aspects of the welding jaws or of the clamps ; comprising means for compensating for the thermal expansion of the welding jaws or of the clamps characterised by the thermal insulating constructional aspects
- B29C66/81821—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 cooling constructional aspects, or by the thermal or electrical insulating or conducting constructional aspects of the welding jaws or of the clamps ; comprising means for compensating for the thermal expansion of the welding jaws or of the clamps characterised by the thermal insulating constructional aspects of the welding jaws
-
- 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
- B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
- B29K2023/10—Polymers of propylene
- B29K2023/12—PP, i.e. polypropylene
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/712—Containers; Packaging elements or accessories, Packages
- B29L2031/7146—Battery-cases
Description
Die Erfindung betrifft ein Verfahren von Batteriegehäuseteilen aus Kunststoff mittels eines auf so hohe Temperatur aufgeheizten Heizif/iegels, daß Kunststoff in die gasartige Zersetzih.gfphase überführt v/ird, bei dem die zu verschweißenden Fl; .hen der Batteriegehäuseteile kurzzeitig mit dem Heizspiegel in Berührung gebracht werden, eine aufgeschmolzene Schicht hergestellt wird und nach Entfernen des Heizspiegels die Batteriegehäuseteile miteinander verbunden werden.The invention relates to a method for battery housing parts made of plastic by means of a heater heated to such a high temperature that plastic converted into the gaseous decomposition phase if necessary to which the bottle to be welded; .hen the battery housing parts briefly come into contact with the heating mirror are brought, a melted layer is produced and after removing the heating mirror the Battery housing parts are connected to one another.
Die Erfindung betrifft ferner eine Vorrichtung zur Durchführung dieses Verfahrens mit einem Heizspiegel und einer Einrichtung zum Aufheizen des Heiznpiegels.The invention also relates to a device for carrying out this method with a heating mirror and a device for heating the heating mirror.
Gängige Praxis ist es, zum Beispiel insbesondere beim Verschweißen von Batteriekasten und Deckeln aus Polypropylen, einen Heizspiegel aus einer Aluminium-Legierung oder aus einem Rotguß zu verwenden. Im Falle der Verwendung der Aluminium-Legierung müssen die Oberflächen des Heizspiegels mit einer Teflon-Folie bespannt oder mit Teflon beschichtet werden, damit das Polypropylen bei Erwärmung auf die Schmelztemperatur nicht haften bleibt. Diese Teflonbeschichtung hat nur eine begrenzte Standzeit, so daß gleichbleibende Kosten nicht zu vermeiden sind. Außerdem ist die Aufheizzeit bis zur Schmelze zu lang. Die Folge ist, daß sowohl die Strahlungswärme als auch die direkte Wärmeübertragung auf den unter der aufgeschmolzenen Kunststoffschicht befindlichen Kunststoff zu starkem Verzug der dünnen Wände, insbesondere des Kastens, führen und damit das Aufeinandertreffen der zu verschweißenden Teile in Frage gestellt ist. Undichtigkeiten und Ausschuß sind die Folge. Im Falle der Verwendung des Rotgmses und etwas höheren Temperaluren wird zwar die Tellon-Beschichtung vermieden, aber der aufgeschmolzene Kunststoff bleibt zum Teil immer noch haften. Er wird an der Grenzschicht gekrackt, und der Spiegel zeigt schon nach kurzer Zeit eine starke Verschmutzt ng. Der Koksrückstand verursacht auf dem Spiegel und im aufgeschmolzenen Kunststoff Rückstände, die die Verschweißung beeinträchtigen. Außerdem sei auf die schwierige Verarbeitung des Rotgusses und die Materialkosten hingewiesen. Nachteilig wirkt sich in beiden Fällen die starke Geruchsbelästigung aus.It is common practice, for example in particular with Welding of the battery box and lids made of polypropylene, a heating mirror made of an aluminum alloy or to use from a gunmetal. In the case of using the aluminum alloy the surfaces of the heating mirror must be covered with a Teflon film or coated with Teflon so that the polypropylene does not stick when heated to the melting temperature. This Teflon coating has only a limited service life, so that constant costs cannot be avoided. In addition, the heating-up time to melt is too long. The consequence is that both the radiant heat and the direct heat transfer to the under the melted plastic layer Plastic lead to severe distortion of the thin walls, especially of the box, and thus that Meeting of the parts to be welded is in question. Leaks and rejects are the consequence. In the case of using the Rotgmses and The Tellon coating is a bit higher temperatures avoided, but some of the melted plastic still sticks. He will cracked at the boundary layer, and the mirror shows a strong contamination after a short time. Of the Coke residue causes residues on the mirror and in the melted plastic, which Affect welding. In addition, on the difficult processing of the gunmetal and the Material costs pointed out. The strong odor nuisance has a disadvantageous effect in both cases.
Bei einem bekannten Verfahren der eingangs erwähnten Art (US-PS 38 97 296) wird der Kunststoff bis in die Nähe des Entflammpunktes der Kunststofflächen durch ein im Ofen vorerwärmtes He>.schwertIn a known method of the type mentioned (US-PS 38 97 296), the plastic up to the vicinity of the flash point of the plastic surfaces by means of a He> sword preheated in the furnace
to erhitzt, worauf von dem Heizschwert ein Teil der verflüssigten Oberflächenmasse kaugummiartig weggezogen wird, um diese oxidierenten Teile zu entfernen, die darunter befindlichen unoxidierten Teile der Oberflächen freizusetzen und letztere dann unmittelbarto heated, whereupon part of the liquefied surface mass is pulled away like chewing gum by the heating blade in order to remove these oxidizing parts, the unoxidized parts of the underneath To release surfaces and the latter immediately
ii darauf aneinanderzudrücken. Hierbei tritt eine Kräkkung der aufgeschmolzenen, beinahe entflammten Kunststoffoberflächen und eine Freisetzung eingefrorener Spannung des Kunststoffes auf, wie die kaugummiartig von dem Heizschwert herausziehbare Kunst-Stoffmasse verdeutlicht Zur Beseitigung der auf dem Heizschwert entstandenen Rückstände wird dieses nach seinem Herausziehen aus dem Arbeitsspalt auf die Temperatur zum Überführen der Kunststoffrückstände in die gasartige Zersetzungsphase aufgeheizt, d. h. im Arbeitsspalt wird mit einer geringeren Temperatur gearbeitet.ii to press together. Here a crack occurs the melted, almost inflamed plastic surfaces and a release of frozen ones Tension of the plastic, like the plastic mass that can be pulled out like chewing gum from the heating sword clarified To remove the residues that have arisen on the heating blade, this is done after pulling it out of the working gap to the temperature for transferring the plastic residues heated in the gaseous decomposition phase, d. H. the working gap is at a lower temperature worked.
Zum Schweißen von Werkstücken aus thermoplastischem Material ist weiterhin ein elektrisch erwärmbarer Heizspiegel bekannt (DE-OS 22 06 189), bei dem eineFor welding workpieces made of thermoplastic material, an electrically heatable one is also used Heating mirror known (DE-OS 22 06 189), in which one
jo Deckplatte aus Aluminium über Schrauben mit dem Heizspiegelteil abnehmbar verbunden ist. Ferner sind auch ringförmige Heizspiegel bekannt, deren Beheizung in indirekter Weise durch Rohrheizkörper erfolgt.jo cover plate made of aluminum is detachably connected to the heated mirror part via screws. Furthermore are ring-shaped heating mirrors are also known, which are heated indirectly by tubular heating elements.
Der Erfindung liegt die Aufgabe zugrunde, einThe invention is based on the object
j. Verfahren sowie eine Vorrichtung zu seiner Durchführung gemäß der eingangs erwähnten Art derart auszugestalten, daß beim Verschweißen am Heizspiegel keine Rückstände auftreten und sich Maßnahmen zur Säuberung des Heizspiegels erübrigen.j. Method and device for its implementation to be designed according to the type mentioned in such a way that when welding on the heating mirror no residues occur and measures to clean the heating mirror are unnecessary.
Diese Aufgabe wird erfindungsgeniäß dadurch gelöst, daß als Material des Heizspiegels Duraluminium gewählt wird und daß die Aufheizung auf die Überführungstemperatur unmittelbar vor dem und währert'd des Inberührungsbringens der zu verschweißenden Flächen mit dem Heizspiegel erfolgt, so daß sich auf dem Heizspiegel keine Rückstände bilden.According to the invention, this object is achieved by that duralumin is chosen as the material of the heating mirror and that the heating on the Transfer temperature immediately before and during the bringing into contact of the to be welded Surfaces with the heating mirror takes place so that no residues form on the heating mirror.
Die Vorrichtung zur Durchführung des erfindungsgemäßen Verfahrens zeichnet sich dadurch aus, daß de/· Heizspiegel aus Ddraluminium besteht, daß die Aufheizeinrichtung in ihm als Rohrheizkörper ausgebildet ist, und daß der Heizspiegel eine auswechselbare Deckplatte aufweist.The device for performing the invention The process is characterized in that the heating mirror is made of aluminum, and that the heating device is designed in it as a tubular heater, and that the heating mirror has a replaceable cover plate having.
Das erfindungsgemäße Verfahren gewährleistet in vorteilhafter Weise ein kurzzeitiges Herrschen der Überführungstemperatur im Arbeitsspalt, so daß sich zusammen mit der Wirkung des Duraluminiums erst gar keine Rückstände auf dem Heizspiegel bilden und eine glasklare Schmelze erhalten wird, die extrem kurze Taktzeiten von 1 bis 2 Sekunden ermöglicht. Der Heizspiegel braucht nicht gesäubert zu werden.The method according to the invention advantageously ensures a short-term prevalence of the Transfer temperature in the working gap, so that together with the effect of the duralumin no residues form on the heating mirror and a crystal-clear melt is obtained that is extremely short Cycle times of 1 to 2 seconds are possible. The heating mirror does not need to be cleaned.
Die Temperatur richtet sich nach dem Verdampfungspunkt des Kunststoffs, z. B. des Polypropylens. Wird mit so hohen Temperaturen gearbeitet, so wird folgender Effekt erreicht: Der aufzuschmelzendeThe temperature depends on the evaporation point of the plastic, e.g. B. of polypropylene. If you work with such high temperatures, then the following effect is achieved: The one to be melted
Μ Kunststoff wird nicht gekrackt, weil die Energie, die erforderlich ist, um die Kunststoff-Moleküle in die Dampfphase zu überführen, zum Teil auch den Molekülen an der Grenze der Schmelzschicht und derΜ Plastic won't crack because of the energy that is necessary to convert the plastic molecules into the vapor phase, sometimes also the Molecules at the boundary of the enamel layer and the
Dampfphase entnommen wird. Dadurch wird erreicht, daß die aufgeschmolzene Schicht sich nicht weiter ewärmt. Diesem Effekt überlagert sich positiv das »Leidenfmsi'sche Phänomen«, das besagt, daß die gebildete Dampischicht eine Wärmeisolierung zwischen ϊ dem aufgeschmolzenen Kunststoff und äem auf überhöhte Temperatur gebrachten Heizspiegel bewirkt, die verhindert, daß der Kunststoff eint hchffo Temperatur als die Schmelztemperatur annimmt.Vapor phase is taken. This ensures that the melted layer does not move any further warmed. The »Leidenfmsi phenomenon«, which means that the formed vapor layer provides thermal insulation between ϊ causes the melted plastic and the heating mirror brought to an excessive temperature, which prevents the plastic from collapsing Temperature as the melting temperature assumes.
Durch die extrem kurzen Taktzeiten wird eine in unnötige Aufhebung des unter der aufgeschmolzenen glasklaren Schicht befindlichen Kunststoffes und damit ein \'i:cui vkr?u verschweißenden Batteriegehäuseteile vermieden. Infolge davon wird der Ausschuß aufgrund von Undichtigkeiten bei den Batteriegehäusen π vermindert.The extremely short cycle times one of the plastic and into unnecessary repeal located under the molten crystal clear layer so that a \ 'i is: cui avoided vkr and welded battery housings?. As a result, the scrap due to leaks in the battery housings π is reduced.
Eine Ausführungsform der Vorrichtung zur Durchführung des erfindungsgemäßen Verfahrens wird nun
anhand der Zeichnungen beschriebe,!, in !■ ..neren ist
Fig. I eme Aufrißansicht der Vorrichtung; 'ind
Fig. 2 eine Grundrißansich! auf Omnd- und Mitieiplatte
des Heizspr-geis d.. Vorne !n/n·», wo^ei der
Rohrheizkörper gestrichelt dargestellt isi.An embodiment of the device for carrying out the method according to the invention will now be described with reference to the drawings
Fig. 1 is an elevation view of the device; 'ind
Fig. 2 is a plan view! on the omnd and middle plate of the Heizsprgeis d .. Front! n / n · », where ^ ei the tubular heating element is shown in dashed lines.
Wie die Fig. 1 und 2 verdeutlichen, weist die Vorrichtung zur Durchführung des erfindungsgemaßen Vciiahreiu» einen aus leicht zu verarbeitendem Ut.:*aluminium bestehenden Heizspiegel 1 auf, der aus eiper Grundplatte 5, einer Mittelplatte 4 und einer auswechselbaren Deckplatte 3 zusammengesetzt ist Zwischen der Grundplatte 5 und der Mittelplatte 4 ist ein Rohrheizkörper 2 angeordnet. Der Heizspiegel 1 ist durch Auswechslung allein der Deckplatte 3 für mehrere Typen verwendbar. Die Temperatursteuerur.g erfolgt nach bekannten Verfahren und muß dem jeweiligen Kunststoff entsprechend im Versuch ermittelt werden.As FIGS. 1 and 2 illustrate, the device for carrying out the inventive Vciiahreiu »one made of easy-to-process ut .: * aluminum existing heating mirror 1, which consists of a base plate 5, a middle plate 4 and a replaceable Cover plate 3 is assembled between the base plate 5 and the middle plate 4 is a Tubular heater 2 arranged. The heating mirror 1 is can be used for several types by simply replacing the cover plate 3. The temperature controller g takes place according to known methods and must be determined in the experiment according to the respective plastic will.
Hierzu 1 Blatt Zeichnungen1 sheet of drawings
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2814077A DE2814077C2 (en) | 1978-03-30 | 1978-03-30 | Process for welding battery housing parts made of plastic and device for carrying out this process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2814077A DE2814077C2 (en) | 1978-03-30 | 1978-03-30 | Process for welding battery housing parts made of plastic and device for carrying out this process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE2814077A1 DE2814077A1 (en) | 1979-10-04 |
| DE2814077C2 true DE2814077C2 (en) | 1982-12-02 |
Family
ID=6035907
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE2814077A Expired DE2814077C2 (en) | 1978-03-30 | 1978-03-30 | Process for welding battery housing parts made of plastic and device for carrying out this process |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE2814077C2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2660594B1 (en) * | 1990-04-09 | 1994-08-05 | Peugeot | METHOD AND DEVICE FOR ASSEMBLING PARTS IN A POLYMERIC ALVEOLAR MATERIAL AND THEIR USE FOR THE MANUFACTURE OF FOUNDRY MODELS. |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3723705A (en) * | 1972-01-17 | 1973-03-27 | Ridge Tool Co | Fusion heater |
| DE2206189C3 (en) * | 1972-02-10 | 1975-05-28 | Messer Griesheim Gmbh, 6000 Frankfurt | Electrically heatable heating mirror for welding workpieces made of thermoplastic material |
| US3897296A (en) * | 1973-07-12 | 1975-07-29 | Amchem Prod | Thermal welding of plastic |
-
1978
- 1978-03-30 DE DE2814077A patent/DE2814077C2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE2814077A1 (en) | 1979-10-04 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| OAP | Request for examination filed | ||
| OD | Request for examination | ||
| D2 | Grant after examination | ||
| 8363 | Opposition against the patent | ||
| 8331 | Complete revocation |