DE2552774C2 - Heavy duty corrugating device - Google Patents
Heavy duty corrugating deviceInfo
- Publication number
- DE2552774C2 DE2552774C2 DE2552774A DE2552774A DE2552774C2 DE 2552774 C2 DE2552774 C2 DE 2552774C2 DE 2552774 A DE2552774 A DE 2552774A DE 2552774 A DE2552774 A DE 2552774A DE 2552774 C2 DE2552774 C2 DE 2552774C2
- Authority
- DE
- Germany
- Prior art keywords
- air
- cooling
- corrugating
- spray head
- pipe
- 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
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/0015—Making articles of indefinite length, e.g. corrugated tubes
- B29C49/0021—Making articles of indefinite length, e.g. corrugated tubes using moulds or mould parts movable in a closed path, e.g. mounted on movable endless supports
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- 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
- B29C35/16—Cooling
- B29C2035/1658—Cooling using gas
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- 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
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/001—Combinations of extrusion moulding with other shaping operations
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/13—Articles with a cross-section varying in the longitudinal direction, e.g. corrugated pipes
-
- 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
- B29L2023/003—Tubular articles having irregular or rough surfaces
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Description
Antriebskettenräder und Führungsschienen 25, 26 und 27,28 gebildet sind. Jede Halbform 16 ist komplementär zu einer Halbform der anderen Hälfte der Formeinrichtung ausgebildet Die Halbformen bilden längs des Vorwärtstrums zwischen sich einen sich axial erstrekkenden Tunnel mit hohlzylindrischer Fcrm und einer gewellten Wand. Die Ketten der Halbformen werden durch die Antriebskettenräder synchron zueinander angetrieben. Durch den auf Rädern ruhenden Schütten 10 können die Formeinrichtungen in eine solche Lage gebracht werden, daß ein Spritzkopf 29 am Eingang des Tunnels angeordnet werden kann. Der Spritzkopf sitzt an der Düse einer Spritzgußmaschine, die koaxial zum Tunnel angeordnet ist. Gegebenenfalls können die Formeinrichtungen vom Spritzkopf 29 wegbewegt werden, um Zugang zu diesem zu schaffen.Drive sprockets and guide rails 25, 26 and 27, 28 are formed. Each half-shape 16 is complementary formed into a half-mold of the other half of the molding device. The half-molds form along the Forward strand between them an axially extending tunnel with a hollow cylindrical shape and a corrugated wall. The chains of the half-molds are synchronized with each other by the drive sprockets driven. Due to the chutes 10 resting on wheels, the molding devices can be in such a position be brought so that a spray head 29 can be arranged at the entrance of the tunnel. The spray head is seated at the nozzle of an injection molding machine, which is arranged coaxially to the tunnel. If necessary, the Molding devices are moved away from the spray head 29 to provide access to this.
Der Spritzkopf 29 selbst hat eine spezielle Form zur Verwendung in Verbindung mit der erfindungsgemäßen Vorrichtung. Aus den F i g. 4 und 5, in denen der Spritzkopf in einer Stellung am Zugang des Tunnels gezeigt ist, ist ersichtlich, daß der Kopf c;.n Zwischenstück 38 hat, das mit mehreren radialen Kanälen versehen ist. Mit dem Spritzkopf ist ein rohrförmiger Teil 39 verbunden, der sich axial vom Spritzkopf 29 wegerstreckt und der einen Läufer 40 am freien Ende hat, der an der Innenseite eines geformten Rohres 41 anliegt, um dieses Ende abzustützen. Der rohrförmige Teil 39 trägt eine Abdichtung 42, die aus drei Ringdichtungen gebildet ist. Diese sind in axialem Abstand zum Ende des Spritzkopfes angeordnet, um einen ersten Luftraum 43 zwischen diesem und der Abdichtung 42 zu bilden. Der rohrförmige Teil trägt ferner eine zweite Abdichtung 44, die aus einer Ringdichtung gebildet ist. Diese Ringdichlung befindet sich in einem Abstand zur ersten Abdichtung 42, um einen zweiten Luftraum 45 dazwischen zu bilden. Der Spritzkopf 29 umfaßt einen ersten Luftkanal 46, der mit einem ersten Lufteinlaß 47 in Verbindung steht. Durch diesen wird dem Kanal Druckluft zugeführt. Der Luftkanal 46 führt in den Luftraum 43, um die Druckluft einzuleiten, durch die das heiße stranggepreßte Rohr 41a aus thermoplastischem Material zur Anlage an die Wand der Form ausgedehnt wird. Ein zweiter Lufteinlaß 48 steht mit einem zweiten Luftkanal 49 in Verbindung, der im rohrförmigen Teil 39 angeordnet ist und mit dem zweiten Luftraum 45 in Verbindung steht Der rohrförmige Teil 39 hat öffnungen 50, die über seine Länge hinweg innerhalb des Luftraumes 45 verteilt sind, so daß dem zweiten Lufteinlaß 48 zugeleitete Kühlluft auf das thermoplastische Material gerichtet wird, um das Material abzukühlen und erstarren zu lassen. Um die Kühlwirkung dieser Kühlluft ι« zu unterstützen, ist eine Wärmeaustauscherschlange 51 um den rohrförmigen Teil 39 angeordnet, die mit zwei Kanälen 52, 53 in Verbindung steht, die sich innerhalb des rohrförmigen Teils 39 befinden. Ein Einlaß- und Auslaßkanal 54 bzw. 55 für Kühlluft sind mit diesen Kanälen verbunden.The spray head 29 itself has a special shape for use in connection with the device according to the invention. From the F i g. 4 and 5, in which the spray head is shown in a position at the entrance to the tunnel, it can be seen that the head c ; .n has intermediate piece 38 which is provided with several radial channels. A tubular part 39 is connected to the spray head and extends axially away from the spray head 29 and which has a runner 40 at the free end which rests against the inside of a shaped tube 41 in order to support this end. The tubular part 39 carries a seal 42 which is formed from three ring seals. These are arranged at an axial distance from the end of the spray head in order to form a first air space 43 between the latter and the seal 42. The tubular part also carries a second seal 44 which is formed from an annular seal. This ring seal is at a distance from the first seal 42 in order to form a second air space 45 therebetween. The spray head 29 comprises a first air duct 46 which is in communication with a first air inlet 47. Compressed air is supplied through this to the duct. The air duct 46 leads into the air space 43 to introduce the pressurized air through which the hot extruded tube 41a of thermoplastic material is expanded to bear against the wall of the mold. A second air inlet 48 is in communication with a second air duct 49 which is arranged in the tubular part 39 and is in communication with the second air space 45. The tubular part 39 has openings 50 which are distributed over its length within the air space 45, as follows that the second air inlet 48 supplied cooling air is directed towards the thermoplastic material to cool and solidify the material. In order to support the cooling effect of this cooling air ″, a heat exchanger coil 51 is arranged around the tubular part 39 and is connected to two channels 52, 53 which are located inside the tubular part 39. Inlet and outlet ducts 54 and 55 for cooling air are connected to these ducts.
Wie in F i g. 1 und 2 gezeigt ist, weist jede Formeinrichtung ferner einen Luftverteilungskanal 57, 58 auf, der sich längs des Rücklauftrums der zugeordneten endlosen Bahn erstreckt und so angeord- -" net ist, daß Kühlluft an die freiliegenden Innenflächen der Halbformen 16 geleitet wird, während diese im Rücklauftrum entlanglaufen. Die LuftverteiJungskanäle 57,58 sind mit Kühlluftgebläsen 59, 60 verbunden. Jede Formeinrichtung weist ferner einen Wärmeminderer 61, 2"> 62 auf, der durch einen Kühlwassertank gebildet ist. Durch diesen Tank kann Kühlwasser umgewälzt werden. Zu diesem Zweck sind Einlaß- und Auslaßwasseranschlüsse 63, 64 bzw. 63a, 64a vorgesehen. Die Gehäuse der Formeinrichtungen können auf diese i» Weise während des Formvorgangs gekühlt werden. Um tin Vergeuden von Material zu Beginn des Formvorgangs zu vermeiden, kann das Wasser in den Gehäusen jedoch durch elektrische Tauchsieder 65, 66 auf die erforderliche Temperatur erwärmt werden. Die Tauch-)"' sieder sind in die Wände der Gehäuse eingesetzt.As in Fig. 1 and 2, each mold further includes an air distribution duct 57, 58, which extends along the return strand of the associated endless path and is so arranged - "net is that cooling air is passed to the exposed inner surfaces of the half-molds 16 while they are in the Run along the return run. The air distribution ducts 57, 58 are connected to cooling air fans 59, 60. Each molding device also has a heat reducer 61, 2 "> 62, which is formed by a cooling water tank. Cooling water can be circulated through this tank. Inlet and outlet water connections are provided for this purpose 63, 64 or 63a, 64a are provided. The housing of the molding devices can be on this i »way to be cooled during the molding process. Around Tin to avoid wasting material at the beginning of the molding process can keep the water in the housings however, they can be heated to the required temperature by electrical immersion heaters 65, 66. The diving) "' they are set in the walls of the housing.
Eine vorteilhafte weitere Ausbildung der Erfindung besteht gemäß der Darstellung in F i g. 1 darin, daß die Stützkonstruktion 13 mechanische Winden 82 umfaßt, die die oberen und unteren Formeinrichtungen mitein-■"' ander verbinden und so in Funktion gesetzt werden können, daß die obere Einrichtung von der unteren weggefahren werden kann, um einen leichten Zugang zur Wartung zu ermöglichen.An advantageous further embodiment of the invention is shown in FIG. 1 in that the Support structure 13 includes mechanical winches 82 which connect the upper and lower forming devices with one another. connect to the other and can be put into operation in such a way that the upper device of the lower can be moved away to allow easy access for maintenance.
Hierzu 3 Blatt ZeichnungenFor this purpose 3 sheets of drawings
Claims (6)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2552774A DE2552774C2 (en) | 1975-11-25 | 1975-11-25 | Heavy duty corrugating device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2552774A DE2552774C2 (en) | 1975-11-25 | 1975-11-25 | Heavy duty corrugating device |
Publications (2)
Publication Number | Publication Date |
---|---|
DE2552774A1 DE2552774A1 (en) | 1977-05-26 |
DE2552774C2 true DE2552774C2 (en) | 1983-04-28 |
Family
ID=5962550
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE2552774A Expired DE2552774C2 (en) | 1975-11-25 | 1975-11-25 | Heavy duty corrugating device |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE2552774C2 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3930318C1 (en) * | 1989-09-11 | 1990-05-17 | Fraenkische Rohrwerke Gebr. Kirchner Gmbh & Co, 8729 Koenigsberg, De | |
GB9112997D0 (en) * | 1991-06-17 | 1991-08-07 | Lupke Manfred Arno Alfred | Extrusion die with interchangeable extrusion nozzles |
DE102010004126A1 (en) * | 2009-05-20 | 2010-11-25 | Jarus Gmbh | Apparatus for the continuous production of a casting or foaming product |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1253446B (en) * | 1965-09-29 | 1967-11-02 | Reifenhaeuser Kg | Method and apparatus for producing preferably flexible, transversely grooved tubes |
-
1975
- 1975-11-25 DE DE2552774A patent/DE2552774C2/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
DE2552774A1 (en) | 1977-05-26 |
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Legal Events
Date | Code | Title | Description |
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8363 | Opposition against the patent | ||
8331 | Complete revocation |