DE19909409C1 - Curved hose production comprises producing a blank and placing it in mould in the form of a pipe where it is vulcanized - Google Patents
Curved hose production comprises producing a blank and placing it in mould in the form of a pipe where it is vulcanizedInfo
- Publication number
- DE19909409C1 DE19909409C1 DE19909409A DE19909409A DE19909409C1 DE 19909409 C1 DE19909409 C1 DE 19909409C1 DE 19909409 A DE19909409 A DE 19909409A DE 19909409 A DE19909409 A DE 19909409A DE 19909409 C1 DE19909409 C1 DE 19909409C1
- Authority
- DE
- Germany
- Prior art keywords
- blank
- hose
- pipe
- vulcanized
- mould
- 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 - Fee Related
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
- B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
- B29C53/02—Bending or folding
- B29C53/08—Bending or folding of tubes or other profiled members
- B29C53/083—Bending or folding of tubes or other profiled members bending longitudinally, i.e. modifying the curvature of the tube 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
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/02—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
- B29C43/027—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles having an axis of symmetry
-
- 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
- B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
- B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
-
- 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
- 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
- B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
- B29K2105/24—Condition, form or state of moulded material or of the material to be shaped crosslinked or vulcanised
-
- 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
- B29L2031/24—Pipe joints or couplings
- B29L2031/243—Elbows
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Laminated Bodies (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
Abstract
Description
Die Erfindung betrifft ein Verfahren zur Herstellung eines gekrümmten Schlauches, insbesondere ein Elastomer aufweisenden Schlauches, wobei zunächst ein Rohling hergestellt wird, der zur Formgebung während der Vulkanisation in einer Negativform einliegt. The invention relates to a method for producing a curved Hose, in particular an elastomer hose, wherein a blank is first produced, which is used for shaping during the Vulcanization is in a negative form.
Derartige gekrümmte Schläuche werden üblicherweise in der Automobilindustrie, beispielsweise als Kraftstoffschläuche oder auch als Krümmerschläuche verwandt. Solche Schläuche bestehen aus einem Elastomer mit einem Druckträger in Form eines Gewebes oder Gestrickes und werden zur Formgebung auf einem entsprechend vorgeformten Dorn vulkanisiert. Die Form eines derartigen Schlauches kann hierbei überaus bizarr sein, insbesondere wenn ein derartiger Schlauch den räumlichen Gegebenheiten im Motorraum angepasst werden muss.Such curved hoses are usually used in the Automotive industry, for example as fuel hoses or as Elbow hoses related. Such hoses consist of one Elastomer with a print carrier in the form of a woven or knitted fabric and are used for shaping on a preformed mandrel vulcanized. The shape of such a hose can be extremely be bizarre, especially when such a hose is spatial Conditions in the engine compartment must be adjusted.
Aus der EP 0 755 773 A2 ist nun ein Verfahren zur Herstellung von Krümmerschläuchen bekannt, bei dem ein Schlauchrohling auf einen Kunststoffdorn extrudiert wird der Schlauchrohling zusammen mit dem im Inneren des Schlauches befindlichen Kunststoffdorns auf eine bestimmte Länge geschnitten wird, der Rohling mit dem im Inneren befindlichen Kunststoffdorn in eine Negativform eingelegt wird, der Schlauch zusammen mit dem Dorn in der Negativform vulkanisiert wird, wobei nach Abschluss der Vulkanisation der Dorn entfernt wird. Insbesondere bei Kraftfahrzeugschläuchen, die eine Querschnitt zwischen 10 mm und 15 mm aufweisen, werden als Dorne mit einem entsprechenden Querschnitt versehene Kunststoffvollprofile verwendet. Nach dem Abschluss der Vulkanisation müssen diese Dorne wieder aus dem fertigen Schlauch entfernt werden, wobei derartige Dorne, wenn sie nur eine geringe Länge aufweisen, weggeworfen werden beziehungsweise im Idealfall recycelt werden.EP 0 755 773 A2 now describes a process for the production of Elbow hoses known, in which a tube blank on one The tube blank is extruded together with the im Plastic mandrel located inside the hose to a certain Length is cut, the blank with the inside Plastic mandrel is inserted into a negative mold, the hose together vulcanized with the mandrel in the negative form, after completion the vulcanization of the mandrel is removed. Especially at Motor vehicle hoses that have a cross section between 10 mm and 15 mm, are called mandrels with a corresponding cross section provided full plastic profiles used. After completing the Vulcanization must remove these mandrels from the finished hose be removed with such spikes if they are only a short length exhibit, be thrown away or ideally recycled become.
Derartige Schläuche sind, insbesondere wenn sie als Kraftstoffschläuche Verwendung finden, mit einer Innenschicht aus Fluorkunststoff versehen, die eine Stärke von 0,1 bis 0,2 mm aufweist (DE 40 17 273 A1). Eine solche Sperrschicht verhindert die Permeation von Kraftstoff durch den Schlauch hindurch. Es hat sich nun gezeigt, dass, wenn der Dorn in einen solchen mit einer derartigen Innenschicht versehenen Schlauch eingeführt wird, diese Innenschicht an verschiedenen Stellen Falten schlägt, beziehungsweise an anderen Stellen reißt.Such hoses are, especially if they are as fuel hoses Find use, provided with an inner layer made of fluoroplastic, which has a thickness of 0.1 to 0.2 mm (DE 40 17 273 A1). A such a barrier layer prevents the permeation of fuel through the Hose through. It has now been shown that when the thorn is in one introduced such a hose provided with such an inner layer this inner layer folds in different places, or tears in other places.
Aus der DE 24 53 510 A1 ist ein Verfahren der eingangs genannten Art bekannt; hierbei werden mehrere Platten eines Werkzeugs übereinander angeordnet, wobei zwei derartige Platten auf ihren einander zugewandten Flächen zusammen eine rohrgängige Aussparung zur Aufnahme eines Rohlings aufweisen. Die Herstellung eines solchen Werkzeugs ist jedoch relativ aufwendig und teuer, weshalb sich diese Herstellungsmethode nicht durchgesetzt hat.DE 24 53 510 A1 describes a method of the type mentioned at the beginning known; several plates of a tool are stacked on top of each other arranged, two such plates on their facing each other Surfaces together a tubular cutout to accommodate a Have blanks. The manufacture of such a tool, however, is relatively complex and expensive, which is why this manufacturing method is not has prevailed.
Der Erfindung liegt daher die Aufgabe zugrunde, ein Verfahren zur Herstellung eines gekrümmten Schlauches gemäß der eingangs genannten Art bereitzustellen, das ohne einen Dorn im Schlauchrohling während der Vulkanisation zur Formgebung auskommt und das einfach und preiswert in der Herstellung ist.The invention is therefore based on the object of a method for the production a curved hose according to the type mentioned provide that without a thorn in the tube blank during the Vulcanization for shaping is easy and inexpensive the manufacture is.
Die Aufgabe wird bei einem Verfahren nach dem Oberbegriff des Patentanspruchs 1 erfindungsgemäß dadurch gelöst, dass die Negativform als Rohr ausgebildet ist, in das der Rohling eingeschoben wird. Hierbei wird vorteilhaft, um das Einschieben des Rohlings in das Rohr zu erleichtern, sowohl das Rohr als auch der Rohling mit einem Gleitmittel eingestrichen.The object is achieved according to the invention in a method according to the preamble of patent claim 1 in that the negative form is designed as a tube into which the blank is inserted. Here will advantageous to facilitate the insertion of the blank into the tube, both the pipe and the blank are coated with a lubricant.
Ein weiterer Vorteil des Verfahrens zur Herstellung eines gekrümmten Schlauches - wie zuvor beschrieben - besteht darin, dass durch das Rohrgin dem der Rohling während der Vulkanisation einliegt, eine Beschädigung des Rohlings nicht mehr zu befürchten ist. Das heißt, dass viele derartiger Rohre in den Vulkanisationskessel in beliebiger Weise eingelegt werden können. Das heißt, die Beschickung des Kessels ist einfacher, was schlussendlich auch einen preislichen Vorteil darstellt. Darüber hinaus kann der Raum im Kessel naturgemäß besser ausgenutzt werden, eben weil die Rohre in beliebiger Weise dem Kessel zugeführt werden können. Nach dem Stand der Technik ist es so, dass die Dorne mit dem entsprechenden Schlauch einzeln in Stellagen eingehängt werden müssen, wobei die Stellagen insgesamt dann in den Kessel eingeschoben werden.Another advantage of the method of producing a curved Hose - as described above - is that through the Rohrgin the blank lies in during vulcanization, damage to the Blank is no longer to be feared. That means many of such Pipes can be inserted into the vulcanization boiler in any way can. That said, loading the boiler is easier what ultimately also represents a price advantage. Furthermore, can the space in the boiler can naturally be better used, precisely because the Pipes can be fed to the boiler in any way. After this State of the art is that the mandrels with the appropriate Hose must be hung individually in racks, the Total shelves are then inserted into the boiler.
Anhand der Zeichnung wird die Erfindung nachstehend beispielhaft näher erläutert:The invention is illustrated below by way of example with reference to the drawing explains:
Der in der Zeichnung dargestellte Schlauchabschnitt 1 zeigt einen Rohling in Form einer Hülse 2 aus einem Elastomermaterial mit einer Druckträgerschicht 3, zum Beispiel einem Gewebe oder einem Gestricke zur Verstärkung der Elastomerschicht. Im Inneren des Schlauches 1 befindet sich die Sperrschicht 4 beispielweise aus einem Fluorkunststoff. Die Dicke der Sperrschicht beträgt etwa 0,1 mm bis 0,2 mm. Das Rohr, in den der Rohling eingeschoben wird, hat das Bezugszeichen 10.The hose section 1 shown in the drawing shows a blank in the form of a sleeve 2 made of an elastomer material with a pressure carrier layer 3 , for example a fabric or a knitted fabric for reinforcing the elastomer layer. In the interior of the hose 1 there is the barrier layer 4, for example made of a fluoroplastic. The thickness of the barrier layer is approximately 0.1 mm to 0.2 mm. The tube into which the blank is inserted has the reference number 10 .
Claims (2)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19909409A DE19909409C1 (en) | 1998-12-23 | 1999-03-04 | Curved hose production comprises producing a blank and placing it in mould in the form of a pipe where it is vulcanized |
EP99122221A EP1013405A3 (en) | 1998-12-23 | 1999-11-06 | Method for producing a bent hose |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19859396 | 1998-12-23 | ||
DE19909409A DE19909409C1 (en) | 1998-12-23 | 1999-03-04 | Curved hose production comprises producing a blank and placing it in mould in the form of a pipe where it is vulcanized |
Publications (1)
Publication Number | Publication Date |
---|---|
DE19909409C1 true DE19909409C1 (en) | 2000-03-09 |
Family
ID=7892216
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19909409A Expired - Fee Related DE19909409C1 (en) | 1998-12-23 | 1999-03-04 | Curved hose production comprises producing a blank and placing it in mould in the form of a pipe where it is vulcanized |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE19909409C1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1321284A1 (en) * | 2001-12-19 | 2003-06-25 | ContiTech Schlauch GmbH | Method of manufacture of a vulcanized curved hose in a mould using a temporary hose sheath |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2453510A1 (en) * | 1974-11-12 | 1976-05-20 | Phoenix Gummiwerke Ag | Mould for producing rubber pipe bends - allowing simultaneous production of larger number of pipe bends of high surface quality |
DE4017273A1 (en) * | 1989-05-29 | 1990-12-06 | Tokai Rubber Ind Ltd | RUBBER LAYERED |
EP0755773A2 (en) * | 1995-07-25 | 1997-01-29 | Veritas Gummiwerke Ag | Method for making bent pipes |
-
1999
- 1999-03-04 DE DE19909409A patent/DE19909409C1/en not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2453510A1 (en) * | 1974-11-12 | 1976-05-20 | Phoenix Gummiwerke Ag | Mould for producing rubber pipe bends - allowing simultaneous production of larger number of pipe bends of high surface quality |
DE4017273A1 (en) * | 1989-05-29 | 1990-12-06 | Tokai Rubber Ind Ltd | RUBBER LAYERED |
EP0755773A2 (en) * | 1995-07-25 | 1997-01-29 | Veritas Gummiwerke Ag | Method for making bent pipes |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1321284A1 (en) * | 2001-12-19 | 2003-06-25 | ContiTech Schlauch GmbH | Method of manufacture of a vulcanized curved hose in a mould using a temporary hose sheath |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8100 | Publication of the examined application without publication of unexamined application | ||
D1 | Grant (no unexamined application published) patent law 81 | ||
8364 | No opposition during term of opposition | ||
R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee |
Effective date: 20111001 |