DE102005015683A1 - Exit from low pressure sizing bath for pipe extrusion line involves a water chamber between two spaced seals with pumped level control - Google Patents
Exit from low pressure sizing bath for pipe extrusion line involves a water chamber between two spaced seals with pumped level control Download PDFInfo
- Publication number
- DE102005015683A1 DE102005015683A1 DE102005015683A DE102005015683A DE102005015683A1 DE 102005015683 A1 DE102005015683 A1 DE 102005015683A1 DE 102005015683 A DE102005015683 A DE 102005015683A DE 102005015683 A DE102005015683 A DE 102005015683A DE 102005015683 A1 DE102005015683 A1 DE 102005015683A1
- Authority
- DE
- Germany
- Prior art keywords
- water chamber
- water
- seal
- exit
- seals
- 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.)
- Ceased
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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
- B29C48/90—Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article
- B29C48/901—Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article of hollow bodies
- B29C48/903—Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article of hollow bodies externally
-
- 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
- B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
- B29C35/16—Cooling
- B29C2035/1616—Cooling using liquids
-
- 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
- B29C2791/00—Shaping characteristics in general
- B29C2791/004—Shaping under special conditions
- B29C2791/006—Using vacuum
-
- 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
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
- B29C48/90—Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article
- B29C48/905—Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article using wet calibration, i.e. in a quenching tank
-
- 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
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
- B29C48/911—Cooling
- B29C48/9115—Cooling of hollow articles
-
- 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
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
- B29C48/911—Cooling
- B29C48/9115—Cooling of hollow articles
- B29C48/912—Cooling of hollow articles of tubular films
- B29C48/913—Cooling of hollow articles of tubular films externally
-
- 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
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
- B29C48/919—Thermal treatment of the stream of extruded material, e.g. cooling using a bath, e.g. extruding into an open bath to coagulate or cool the material
Abstract
Description
Die vorliegende Erfindung betrifft eine Abdichtung am Ausgang eines Unterdruck-Kalibrierbades in einer Extrusionslinie zur Herstellung von Rohren aus Kunststoff gemäß dem Oberbegriff des Anspruchs 1.The The present invention relates to a seal at the exit of a Negative pressure calibration bath in an extrusion line for production of plastic pipes according to the preamble of claim 1.
Nach dem Austritt aus einem Extrusionswerkzeug läuft das heiße, noch verformbare Rohr in ein Unterdruck-Kalibrierbad ein. Dieses besteht aus einem Vakuumtank, an dessen Eingang eine vorzugsweise perforierte Kalibrierhülse angeordnet ist. Im Vakuumtank wird ein Unterdruck erzeugt, so dass das extrudierte Rohr durch die Kalibrierhülse auf einen bestimmten Durchmesser fixiert wird. In der Vakuumkammer erfolgt auch schon eine weitere Abkühlung des Rohres durch Besprühen mit Wasser. Am Ausgang des Vakuumtanks durchläuft das Rohr eine Dichtung, die dem Vakuumtank gegenüber der Umgebung abdichtet.To the exit from an extrusion die, the hot, yet deformable tube runs into Negative pressure calibration bath. This consists of a vacuum tank, arranged at the input of a preferably perforated Kalibrierhülse is. In the vacuum tank, a negative pressure is generated, so that the extruded Pipe through the calibration sleeve is fixed to a certain diameter. In the vacuum chamber already done a further cooling of the tube by spraying with Water. At the outlet of the vacuum tank, the tube passes through a seal, the opposite of the vacuum tank the environment seals.
Als
Dichtungen kommen häufig
Gummimanschetten zum Einsatz, wie z. B. in
Es
sind auch schon Dichtungen bekannt, deren Durchlassquerschnitt im
laufenden Betrieb auf Kunststoffrohre unterschiedlicher Außendurchmesser
einstellbar sind, wie beispielsweise aus
Aufgabe der vorliegenden Erfindung ist es, die Abdichtung am Ausgang eines Unterdruck-Kalibrierbades zu verbessern.task The present invention is the sealing at the exit of a Improve vacuum calibration bath.
Diese Aufgabe wird erfindungsgemäß mit einer Abdichtung gelöst, die die Merkmale des Anspruchs 1 aufweist.These Task is according to the invention with a Sealing solved, having the features of claim 1.
Erfindungsgemäß ist also zusätzlich zu der ohnehin schon vorhandenen Dichtung am Ausgang des Vakuumtanks eine weitere Dichtung vorgesehen, die von der ersten beabstandet ist, wobei beide Dichtungen zwischen sich eine Wasserkammer begrenzen, die von dem extrudierten Rohr durchlaufen wird. Aufgrund der höheren Viskosität von Wasser gegenüber der von Luft ist diese Abdichtung wesentlich effektiver als die bisher eingesetzten Einzeldichtungen, die dem Vakuumtank gegenüber atmosphärischer Luft abdichten. Zudem hat die Wasserkammer noch den Vorteil, dass eine weitere Abkühlung des extrudierten Rohres erfolgt.According to the invention is thus additionally to the already existing seal at the outlet of the vacuum tank another seal is provided which is spaced from the first one is, with both seals defining a water chamber between them, which is traversed by the extruded tube. Due to the higher viscosity of water across from By air, this seal is much more effective than that previously used single seals, the vacuum tank against atmospheric air caulk. In addition, the water chamber has the advantage that a further cooling of the extruded tube.
In vorteilhafter Ausgestaltung der Erfindung ist eine wasserseitige Verbindungsleitung zwischen der Wasserkammer und dem Unterdruck-Kalibrierbad mit integrierter Pumpe vorgesehen. Damit ist ein Wasserumlaufsystem geschaffen, d.h., die Wasserentnahme erfolgt aus dem Vakuumtank, wodurch vermieden wird, dass dort das Wasserniveau ansteigt. Gleichzeitig wird kein zusätzliches Frischwasser benötigt.In Advantageous embodiment of the invention is a water-side Connecting line between the water chamber and the vacuum calibration with integrated pump provided. This is a water circulation system created, that is, the water extraction takes place from the vacuum tank, thus preventing the water level from rising there. simultaneously will not be additional Fresh water needed.
Dabei ist es zweckmäßig, wenn eine Füllstandsregelung vorgesehen ist, um ein konstantes Wasserniveau in der Wasserkammer einzustellen, das auf einen Wert oberhalb der Oberkante der Dichtungsöffnung zum Vakuumtank eingestellt ist.there it is useful if a level control is provided to maintain a constant water level in the water chamber set to a value above the top edge of the seal opening for Vacuum tank is set.
Die Wasserkammer kann gegenüber der Atmosphäre offen oder aber auch geschlossen sein. Im letzteren Falle ist es besonders vorteilhaft, wenn eine luftseitige Verbindungsleitung zwischen der Wasserkammer und dem Vakuumtank vorgesehen ist. Dadurch wird in der Wasserkammer ein Unterdruck erzeugt, der dafür sorgt, dass die aus der Wasserkammer in den Vakuumtank strömende Wassermenge reduziert wird. Daraus resultiert eine bessere Dichtwirkung.The Water chamber can opposite the atmosphere open or closed. In the latter case it is particularly advantageous if an air-side connecting line is provided between the water chamber and the vacuum tank. Thereby a negative pressure is created in the water chamber, which ensures that the amount of water flowing from the water chamber into the vacuum tank is reduced becomes. This results in a better sealing effect.
Die erfindungsgemäße Lösung lässt es zu, Dichtungen zu verwenden, die im laufenden Betrieb auf Kunststoffrohre unterschiedlicher Außendurchmesser einstellbar sind bzw. sich selbsttätig einstellen.The Solution according to the invention allows for seals to use, on the other hand, on plastic pipes of different outer diameter are adjustable or set themselves.
Die Erfindung wird nachstehend anhand eines Ausführungsbeispieles näher erläutert. In der dazugehörigen Zeichnung zeigt:The Invention will be explained below with reference to an embodiment. In the associated Drawing shows:
Die
in
Nach
dem Austritt aus dem Extrusionswerkzeug
Am
Ausgang des Unterdruck-Kalibrierbades
Die
Abdichtung
Die
Wasserkammer
Eine
vollständige
Abdichtung zwischen der Wasserkammer und dem Vakuumtank
Anstelle
des Wasserumlaufssystems Wasserkammer
Claims (7)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE202005020748U DE202005020748U1 (en) | 2005-04-06 | 2005-04-06 | Exit from low pressure sizing bath for pipe extrusion line involves a water chamber between two spaced seals with pumped level control |
DE102005015683A DE102005015683A1 (en) | 2005-04-06 | 2005-04-06 | Exit from low pressure sizing bath for pipe extrusion line involves a water chamber between two spaced seals with pumped level control |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102005015683A DE102005015683A1 (en) | 2005-04-06 | 2005-04-06 | Exit from low pressure sizing bath for pipe extrusion line involves a water chamber between two spaced seals with pumped level control |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102005015683A1 true DE102005015683A1 (en) | 2006-10-12 |
Family
ID=37026189
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE102005015683A Ceased DE102005015683A1 (en) | 2005-04-06 | 2005-04-06 | Exit from low pressure sizing bath for pipe extrusion line involves a water chamber between two spaced seals with pumped level control |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE102005015683A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2009127569A1 (en) * | 2008-04-16 | 2009-10-22 | Kraussmaffei Technologies Gmbh | Extrusion apparatus for the production of plastic pipes, seals therefor |
EP2052840A3 (en) * | 2007-10-23 | 2012-11-14 | INOEX GmbH | Infinitely adjustable calibration sleeve for extruded plastic pipes |
CN107116777A (en) * | 2017-07-03 | 2017-09-01 | 云南泉塑实业有限公司 | A kind of tubing vacuum cooling tank |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3327604A1 (en) * | 1983-07-30 | 1985-02-07 | HPG Heizrohr Produktionsgesellschaft mbH, 4000 Düsseldorf | Seal on a calibrating trough |
DE3618656A1 (en) * | 1986-06-03 | 1987-12-10 | Otto Spitzmueller | DEVICE FOR CALIBRATING A HOLLOW PLASTIC PROFILE |
DE4318423C2 (en) * | 1993-06-03 | 1995-11-16 | Theysohn Friedrich Fa | Device for measuring elongated plastic profiles, in particular pipes |
-
2005
- 2005-04-06 DE DE102005015683A patent/DE102005015683A1/en not_active Ceased
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3327604A1 (en) * | 1983-07-30 | 1985-02-07 | HPG Heizrohr Produktionsgesellschaft mbH, 4000 Düsseldorf | Seal on a calibrating trough |
DE3618656A1 (en) * | 1986-06-03 | 1987-12-10 | Otto Spitzmueller | DEVICE FOR CALIBRATING A HOLLOW PLASTIC PROFILE |
DE4318423C2 (en) * | 1993-06-03 | 1995-11-16 | Theysohn Friedrich Fa | Device for measuring elongated plastic profiles, in particular pipes |
Non-Patent Citations (6)
Title |
---|
PAJ & JP 62216718 A * |
PAJ & JP 62216719 A * |
PAJ & JP 62216720 A * |
PAJ, JP 62216718 A |
PAJ, JP 62216719 A |
PAJ, JP 62216720 A |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2052840A3 (en) * | 2007-10-23 | 2012-11-14 | INOEX GmbH | Infinitely adjustable calibration sleeve for extruded plastic pipes |
WO2009127569A1 (en) * | 2008-04-16 | 2009-10-22 | Kraussmaffei Technologies Gmbh | Extrusion apparatus for the production of plastic pipes, seals therefor |
CN102006982A (en) * | 2008-04-16 | 2011-04-06 | 克劳斯玛菲科技有限公司 | Extrusion apparatus for the production of plastic pipes, seals therefor |
CN107116777A (en) * | 2017-07-03 | 2017-09-01 | 云南泉塑实业有限公司 | A kind of tubing vacuum cooling tank |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
OP8 | Request for examination as to paragraph 44 patent law | ||
8131 | Rejection |