DE828898C - Device for the vulcanization of tires or the like made of rubber or rubber-like substances - Google Patents
Device for the vulcanization of tires or the like made of rubber or rubber-like substancesInfo
- Publication number
- DE828898C DE828898C DEC351A DEC0000351A DE828898C DE 828898 C DE828898 C DE 828898C DE C351 A DEC351 A DE C351A DE C0000351 A DEC0000351 A DE C0000351A DE 828898 C DE828898 C DE 828898C
- Authority
- DE
- Germany
- Prior art keywords
- rubber
- thickness
- hose
- heating hose
- treated
- 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
- 239000000126 substance Substances 0.000 title claims description 4
- 238000004073 vulcanization Methods 0.000 title description 6
- 238000010438 heat treatment Methods 0.000 claims description 15
- 239000011248 coating agent Substances 0.000 claims description 2
- 238000000576 coating method Methods 0.000 claims description 2
- 150000001875 compounds Chemical class 0.000 claims description 2
- 230000005684 electric field Effects 0.000 claims 1
- 239000012799 electrically-conductive coating Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002923 metal particle Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
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
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/02—Moulds or cores; Details thereof or accessories therefor with incorporated heating or cooling means
- B29C33/08—Moulds or cores; Details thereof or accessories therefor with incorporated heating or cooling means for dielectric heating
-
- 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
- B29K2021/00—Use of unspecified rubbers 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
- B29L2030/00—Pneumatic or solid tyres or parts thereof
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)
Description
Einrichtung zur Vulkanisation von Reifen o. dgl. aus Kautschuk oder kautschukähnlichen Stoffen Die Erfindung betrifft eine Einrichtung zur Vulkanisation von Fahrzeugreifen und ähnlichen mit Hohlraumbildungen versehenen Gegenständen aus Kautschuk oder kautschukähnlichen Stoffen durch Dielektrikheizung. Die Wärmebehandlung kann dabei in einer beliebigen Stufe des Herstellungsverfahrens eingeschaltet sein, z. B. zum Vorheizen oder auch zum Fertigvulkanisieren des Behandlungsgutes dienen.Device for vulcanization of tires or the like. Made of rubber or rubber-like substances The invention relates to a device for vulcanization from vehicle tires and similar objects provided with cavities Rubber or rubber-like substances through dielectric heating. The heat treatment can be switched on at any stage of the manufacturing process, z. B. serve for preheating or for the finished vulcanization of the material to be treated.
Die Erfindung besteht darin, daß die eine der beiden Elektroden für die Zuführung der elektrischen Energie in das Behandlungsgut aus einer metallischen Formwandung besteht, die die Außer flächen des Reifens umgibt, während die zweite Elektrode aus einem elektrisch leitfähigen Belag auf der Innenwand eines in den Reifen eingelegten Heizschlauches besteht und dabei die Wanddicke des Heizschlauches an den verschiedenen Stellen seines Querschnittes verschieden bemessen ist, derart, daß sich eine möglichst gleichmäßige Feldverteilung ergibt. Dies ist im wesentlichen erreicht, wenn die Dicke von Heizschlauch und Rehandlungs gut zusammen an allen Stellen annähernd gleich groß ist, wobei auf unterschiedliche Zusammensetzung des Behandlungsgutes aus Gewebe und verschiedenen Gummimischungen durch Zu- oder Abschläge an der Dicke des Heizschlauches Rücksicht genommen wird, z. B. dadurch, daß an den Stellen mit erheblichem Gewebeanteil die Dicke des Heizschlauches zusätzlich etwas vergrößert wird. The invention consists in that one of the two electrodes for the supply of electrical energy to the item to be treated from a metallic There is mold wall that surrounds the outer surfaces of the tire, while the second Electrode made of an electrically conductive coating on the inner wall of one in the The heating hose inserted into the tire and the wall thickness of the heating hose is dimensioned differently at the different points of its cross-section, in such a way that that the field distribution is as uniform as possible. This is essentially achieved when the thickness of the airbag and re-treatment go well together at all Make approximately the same size, depending on the different composition of the Items to be treated made of fabric and various rubber compounds through surcharges or deductions consideration is given to the thickness of the heating hose, e.g. B. by the fact that the Make the thickness of the heating hose a little more with a considerable amount of tissue is enlarged.
Die Erfindung gibt die Möglichkeit, bei Fahrzeugreifen und anderem Behandlungsgut von un- gleichmäßiger Wanddicke und nicht einfacher Gestadt, wobei auch Hohlraumbildungen vorliegen, für die Außenform eine Metallform vorzusehen ohne oder nur in geringem Maße zu nichtleitenden Formteilen greifen zu müssen, während der auch sonst gebräuchliche, im Innern des Reifens angeordnete Heizschlauch in seiner Form nur wenig verändert zu werden braucht. Bei Anwendung der Erfindung besteht daher die Möglichkeit, mit einem geringen Aufwand von solchen Mitteln, die von der bisherigen Technik nur wenig abweichen, eine gleichmäßige Feldverteilung im Behandlungsgut bei Anwendung der hochfrequenten Wechselfelderwärmung zu erreichen. Der elektrisch leitfähige Belag auf der Innenwandung des Heizschlauches kann auch aus einer Flüssligkeitsfüllung bestehen, z. Bt aus Wasser, das durch einen geringen Zusatz an Säuren oder Salzen elektrisch leitfähig gemacht wird. The invention gives the possibility of vehicle tires and others Item to be treated from un- uniform wall thickness and not easier Gestadt, where there are also cavities, a metal mold for the outer shape to be provided without or only to a small extent to access non-conductive molded parts must, during the otherwise common, arranged inside the tire The shape of the heating hose only needs to be changed a little. When applying the invention therefore offers the possibility of such with little effort Means that differ only slightly from the previous technology, an even field distribution in the material to be treated when using high-frequency alternating field heating. The electrically conductive coating on the inner wall of the heated hose can also consist of a liquid filling, e.g. Bt from water that by a low The addition of acids or salts is made electrically conductive.
In der Zeichnung ist ein Ausführungsbeispiel des Erfindungsgegenstandes wiedergegeben in Form eines Schnittes durch eine Reifenform. The drawing shows an embodiment of the subject matter of the invention reproduced in the form of a section through a tire shape.
Der der Vulkanisation zu unterwerfende Reifenrohling ist mit I bezeichnet. Er wird an seiner Außenfläche von den beidenlFormhälften2 umgeben, die aus Metall bestehen und von den bisher verwendeten Vulkanisierformen nicht oder nur wenig abweichen. Diese Außenform hat in bekannter Weise Hohlräume, in die Heizmittel, z. B. Dampf, eingeführt werden können. Innerhalb des Reifenrohlings I liegt der Heizschlauch 3, der aus Gummi besteht. An seiner Innenfläche ist er mit einem elektrisch leitfähigen Belag 4 versehen, der in bekannter Weise durch eine Schicht aus elektrisch leitfähigem Kautschuk oder durch einen mit Metallteilchen oder Graphit angereicherten Aufstrich erhalten werden kann. The green tire to be subjected to vulcanization is labeled I. It is surrounded on its outer surface by the two mold halves2, which are made of metal exist and differ only slightly or not at all from the previously used vulcanization molds. This outer shape has, in a known manner, cavities into which the heating means, e.g. B. steam, can be introduced. Inside the green tire I lies the heated hose 3, which is made of rubber. On its inner surface it is electrically conductive Covering 4 provided, which in a known manner by a layer of electrically conductive Rubber or a spread enriched with metal particles or graphite can be obtained.
Dieser leitende Aufstrich 4, welcher auch durch eine leitende Füllung des gesamten Schlauchinnern ersetzt werden kann, bildet die eine und die metallische Außenform 2 die andere der beiden Elek- 1 troden des Behandlungskondensators, zwischen denen der Reifenrohling I dem Einfluß des hochfrequenten Wechselfeldes ausgesetzt wird. Von dem Belag 4 muß eine elektrische Zuleitung isoliert nach außen geführt sein. Die Außenform dagegen liegt zweckmäßig auf Erdpotential. This conductive spread 4, which also has a conductive filling the entire interior of the hose can be replaced, forms the one and the metallic one Outer shape 2 the other of the two electrodes 1 of the treatment capacitor, between those of the green tire I exposed to the influence of the high-frequency alternating field will. An electrical supply line must be insulated from the covering 4 and led to the outside be. The outer shape, on the other hand, is expediently at ground potential.
Bei reiner Dampflleheizung der Form hätte der Heizschlauch 3 etwa die durch die unterbrochene Linie 5 dargestellte innere Formgehung, das heißt, abgesehen von der Wulstpartie wäre an allen Stellen die Wandstärke gleich. Im vorliegenden Falle weicht jedoch die innere Begrenzung 4 sehr stark von dieser Rundform ab, und zwar in der Weise, daß sich an fast allen Stellen nahezu gleiche Abstände a bzw. b zwischen dem leitfähigen Belag 4 und der Innenfläche der Form 2, nämlich den beiden Elektroden, ergeben. With pure steam heating of the mold, the heating hose 3 would have approximately the inner shaping shown by the broken line 5, that is, apart the wall thickness of the bulge would be the same at all points. In the present However, the case deviates the inner boundary 4 very much from this round shape, and in such a way that almost the same distances a resp. b between the conductive coating 4 and the inner surface of the mold 2, namely the two Electrodes.
Wie bereits erwähnt, kann die Außenform durch Dampf, Heißwasser oder xviderstandselektrisch beheizbar sein. Dies ermöglicht dann die Verfahrensweise, daß der Rohling im Wechsel feld dielektrisch schnell auf einen hoben Temperaturstand gebracht wird, der dann weiterhin durch eines der drei anderen vorbeschriebenen Wärmeerzeugungs- oder Übertragungsmittel gehalten xvird. As already mentioned, the outer shape can be created by steam, hot water or xbe electrically heatable with resistance. This then enables the procedure that the blank in the alternating field dielectrically quickly to a raised temperature level is brought, which then continues through one of the other three previously described Heat generation or transfer means held xvird.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEC351A DE828898C (en) | 1949-12-28 | 1949-12-28 | Device for the vulcanization of tires or the like made of rubber or rubber-like substances |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEC351A DE828898C (en) | 1949-12-28 | 1949-12-28 | Device for the vulcanization of tires or the like made of rubber or rubber-like substances |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE828898C true DE828898C (en) | 1952-01-21 |
Family
ID=7012304
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DEC351A Expired DE828898C (en) | 1949-12-28 | 1949-12-28 | Device for the vulcanization of tires or the like made of rubber or rubber-like substances |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE828898C (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE933103C (en) * | 1952-07-19 | 1955-09-15 | Continental Gummi Werke Ag | Device for vulcanization, preferably for preheating, of vehicle tires or other objects in a high-frequency alternating electric field |
| DE1161680B (en) * | 1959-12-17 | 1964-01-23 | Philips Nv | Method and device for cleaning vulcanization molds made of metal for the production of rubber objects |
| EP0159368A1 (en) * | 1984-04-09 | 1985-10-30 | Clint, Inc. | Flow molding |
-
1949
- 1949-12-28 DE DEC351A patent/DE828898C/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE933103C (en) * | 1952-07-19 | 1955-09-15 | Continental Gummi Werke Ag | Device for vulcanization, preferably for preheating, of vehicle tires or other objects in a high-frequency alternating electric field |
| DE1161680B (en) * | 1959-12-17 | 1964-01-23 | Philips Nv | Method and device for cleaning vulcanization molds made of metal for the production of rubber objects |
| EP0159368A1 (en) * | 1984-04-09 | 1985-10-30 | Clint, Inc. | Flow molding |
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