WO1998047689A1 - Eine temperierbohrung verschliessende schneckenspitze - Google Patents
Eine temperierbohrung verschliessende schneckenspitze Download PDFInfo
- Publication number
- WO1998047689A1 WO1998047689A1 PCT/EP1998/001087 EP9801087W WO9847689A1 WO 1998047689 A1 WO1998047689 A1 WO 1998047689A1 EP 9801087 W EP9801087 W EP 9801087W WO 9847689 A1 WO9847689 A1 WO 9847689A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- screw
- temperature control
- control channel
- tip
- extruder
- Prior art date
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
- B29C48/78—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling
- B29C48/80—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling at the plasticising zone, e.g. by heating cylinders
- B29C48/84—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling at the plasticising zone, e.g. by heating cylinders by heating or cooling the feeding screws
- B29C48/845—Heating
-
- 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
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/50—Details of extruders
- B29C48/505—Screws
- B29C48/51—Screws with internal flow passages, e.g. for molten material
- B29C48/515—Screws with internal flow passages, e.g. for molten material for auxiliary fluids, e.g. foaming agents
-
- 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
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/50—Details of extruders
- B29C48/505—Screws
- B29C48/58—Screws provided with seal ring elements, i.e. elements of generally circular and tapered shape for preventing the back flow of the melt
-
- 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
- B29C48/78—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling
- B29C48/80—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling at the plasticising zone, e.g. by heating cylinders
- B29C48/84—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling at the plasticising zone, e.g. by heating cylinders by heating or cooling the feeding screws
-
- 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
Definitions
- the invention relates to an extruder screw according to the preamble of the claim.
- the screw tips to be attached to the front end of the extruder screw are equipped at the end facing away from the tip with a threaded part and with a cylindrical part in which ring grooves for receiving O-rings are formed.
- a threaded part for screwing in such screw tips, only small forces can be applied to the cylindrical surface of the screw tip via frictional engagement.
- high demands are made on the accuracy of the cylindrical surfaces of the screw part and screw tip in order to ensure the required sealing effect with the O-rings arranged in the cylindrical part.
- the invention is therefore based on the object, in the case of an extruder screw of the type mentioned, to increase the effectiveness of the seal arranged between the screw part and the screw tip with less effort in fitting accuracy.
- Fig. 1 shows the section through the front end of an extruder screw equipped with a screw tip according to the prior art
- Fig. 2 shows the section through the front end of an extruder screw according to the invention.
- 1 shows the front end of an extruder screw 1 which has a temperature-regulating bore 2 which is open to the front and in which a displacement tube for supplying and removing liquid temperature control medium is arranged.
- the extruder screw 1 has an internal thread 3 and a mating surface 4 in the temperature-regulating bore 2 which is open towards the front.
- the temperature control bore 2 is closed by screwing in a screw tip 5, which has two ring grooves in which O-rings 6 are chambered, which come to rest on the mating surface 4.
- the ring grooves and the fitting surface 4 and the associated fitting surface at the screw tip 5 must be produced with very high accuracy. For screwing on the screw tip 5, moreover, only slight forces can be applied to the cylindrical surface 7 of the screw tip via frictional engagement.
- FIG. 2 shows the front end of a tip of an extruder screw 11 designed according to the invention, in which a functional division into two comparatively simple components was carried out.
- the temperature-regulating bore 12 which is open to the front, is closed with a screw plug 13, with which a hexagon 14 and a flange 15 for an axial seal 16 can produce a high screwing force and a correspondingly high contact pressure for the axial seal 16.
- a securely sealed closure of the temperature control hole is created with a simple component.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP98913596A EP0914240A1 (de) | 1997-04-17 | 1998-02-26 | Eine temperierbohrung verschliessende schneckenspitze |
CN98800495XA CN1081979C (zh) | 1997-04-17 | 1998-02-26 | 具有封闭控温孔的螺杆尖的挤压机螺杆 |
JP10544794A JP2000512583A (ja) | 1997-04-17 | 1998-02-26 | 温度制御孔を閉鎖するスクリュ先端 |
US09/215,835 US6102560A (en) | 1997-04-17 | 1998-12-17 | Screw tip for closing a temperature-control bore of an extruder screw |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19716127.8 | 1997-04-17 | ||
DE19716127A DE19716127C1 (de) | 1997-04-17 | 1997-04-17 | Extruderschnecke |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US09/215,835 Continuation US6102560A (en) | 1997-04-17 | 1998-12-17 | Screw tip for closing a temperature-control bore of an extruder screw |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1998047689A1 true WO1998047689A1 (de) | 1998-10-29 |
Family
ID=7826832
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP1998/001087 WO1998047689A1 (de) | 1997-04-17 | 1998-02-26 | Eine temperierbohrung verschliessende schneckenspitze |
Country Status (7)
Country | Link |
---|---|
US (1) | US6102560A (de) |
EP (1) | EP0914240A1 (de) |
JP (1) | JP2000512583A (de) |
CN (1) | CN1081979C (de) |
CA (1) | CA2258297A1 (de) |
DE (1) | DE19716127C1 (de) |
WO (1) | WO1998047689A1 (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6957953B2 (en) * | 2003-02-20 | 2005-10-25 | Graham Packaging Company, L.P. | Reservoir reducing screw tip |
US7246936B2 (en) * | 2004-06-04 | 2007-07-24 | Certainteed Corp. | Dynamic mixer screw tip |
Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE846012C (de) * | 1944-04-01 | 1952-08-07 | Dynamit Nobel Ag | Vorrichtung zur Herstellung von Pressmischungen aus haertbaren Kunststoff-Massen |
GB979194A (en) * | 1962-05-10 | 1965-01-01 | Reifenhauser Gmbh | Improvements in or relating to screw extruders |
DE1267833B (de) * | 1962-10-24 | 1968-05-09 | Heinz Weber Dipl Ing | Schnecke fuer einen Kunststoffextruder |
DE2204055A1 (de) * | 1971-01-29 | 1972-08-17 | Ici Ltd | Extruderschnecke aus Segmenten |
DE2230771A1 (de) * | 1972-06-23 | 1974-08-15 | Stemp U Sender Tallafus Gmbh | Temperatur-messeinrichtung |
DE2311717A1 (de) * | 1973-03-09 | 1974-09-19 | Anger Kunststoff | Verfahren zur temperierung von extruderschnecken und einrichtung zu dessen durchfuehrung |
DE2340499B1 (de) * | 1973-08-10 | 1975-01-02 | Barmag Barmer Maschinenfabrik Ag, 5600 Wuppertal | Mehrteilige Schnecke für eine Schnekkenstrangpresse zur Verarbeitung von Kunststoffen |
US4243629A (en) * | 1978-03-29 | 1981-01-06 | P.W.T. Plastic World Technology Limited | Method and apparatus for the continuous extrusion and blowing of thin films of plastic material in particular rigid PVC |
DE2924462A1 (de) * | 1979-06-18 | 1981-01-22 | Josef A Blach | Materialbearbeitungswelle fuer maschinen zur bearbeitung fester, fluessiger, plastischer und/oder zaehviskoser materialien |
US4697928A (en) * | 1981-08-31 | 1987-10-06 | Northern Lights Trust Of February 14, 1978 | Modular mixing apparatus including interchangeable fluid processing means |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB657614A (en) * | 1945-09-25 | 1951-09-26 | U S Rubber Reclaiming Company | Method and apparatus for treating rubber and the like |
US2688770A (en) * | 1951-05-04 | 1954-09-14 | Western Electric Co | Method of and apparatus for controlling the temperature of plastic material |
US2622469A (en) * | 1951-05-04 | 1952-12-23 | Western Electric Co | Method of and apparatus for controlling the temperature of plastic material |
DE1729347A1 (de) * | 1967-12-27 | 1971-08-05 | Schloemann Ag | Temperiereinrichtung fuer zur Verarbeitung von plastischen Massen vorgesehene Extruderschnecken |
GB1318503A (en) * | 1970-07-07 | 1973-05-31 | Desma Werke Gmbh | Conveying worm injection-moulding machine reverse-flow preventers |
US3870451A (en) * | 1973-04-30 | 1975-03-11 | Beloit Corp | Apparatus for extruding foamed thermoplastic material |
DE3203762A1 (de) * | 1982-02-04 | 1983-08-11 | Krauss-Maffei AG, 8000 München | Rueckstroemsperre |
DE3247272A1 (de) * | 1982-12-21 | 1984-06-28 | Krauss-Maffei AG, 8000 München | Rueckstroemsperre |
JPS6260608A (ja) * | 1985-09-10 | 1987-03-17 | Idemitsu Petrochem Co Ltd | スクリユ−装置 |
US4734240A (en) * | 1986-01-24 | 1988-03-29 | Hoechst Celanese Corporation | Melt-extrusion of polymer which is capable of forming an anisotropic melt phase to form large shaped articles exhibiting improved polymeric orientation |
JPH09300433A (ja) * | 1996-05-20 | 1997-11-25 | Kobe Steel Ltd | 押出機用スクリュウ |
-
1997
- 1997-04-17 DE DE19716127A patent/DE19716127C1/de not_active Expired - Lifetime
-
1998
- 1998-02-26 CA CA002258297A patent/CA2258297A1/en not_active Abandoned
- 1998-02-26 EP EP98913596A patent/EP0914240A1/de not_active Withdrawn
- 1998-02-26 JP JP10544794A patent/JP2000512583A/ja active Pending
- 1998-02-26 CN CN98800495XA patent/CN1081979C/zh not_active Expired - Fee Related
- 1998-02-26 WO PCT/EP1998/001087 patent/WO1998047689A1/de not_active Application Discontinuation
- 1998-12-17 US US09/215,835 patent/US6102560A/en not_active Expired - Fee Related
Patent Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE846012C (de) * | 1944-04-01 | 1952-08-07 | Dynamit Nobel Ag | Vorrichtung zur Herstellung von Pressmischungen aus haertbaren Kunststoff-Massen |
GB979194A (en) * | 1962-05-10 | 1965-01-01 | Reifenhauser Gmbh | Improvements in or relating to screw extruders |
DE1267833B (de) * | 1962-10-24 | 1968-05-09 | Heinz Weber Dipl Ing | Schnecke fuer einen Kunststoffextruder |
DE2204055A1 (de) * | 1971-01-29 | 1972-08-17 | Ici Ltd | Extruderschnecke aus Segmenten |
DE2230771A1 (de) * | 1972-06-23 | 1974-08-15 | Stemp U Sender Tallafus Gmbh | Temperatur-messeinrichtung |
DE2311717A1 (de) * | 1973-03-09 | 1974-09-19 | Anger Kunststoff | Verfahren zur temperierung von extruderschnecken und einrichtung zu dessen durchfuehrung |
DE2340499B1 (de) * | 1973-08-10 | 1975-01-02 | Barmag Barmer Maschinenfabrik Ag, 5600 Wuppertal | Mehrteilige Schnecke für eine Schnekkenstrangpresse zur Verarbeitung von Kunststoffen |
US4243629A (en) * | 1978-03-29 | 1981-01-06 | P.W.T. Plastic World Technology Limited | Method and apparatus for the continuous extrusion and blowing of thin films of plastic material in particular rigid PVC |
DE2924462A1 (de) * | 1979-06-18 | 1981-01-22 | Josef A Blach | Materialbearbeitungswelle fuer maschinen zur bearbeitung fester, fluessiger, plastischer und/oder zaehviskoser materialien |
US4697928A (en) * | 1981-08-31 | 1987-10-06 | Northern Lights Trust Of February 14, 1978 | Modular mixing apparatus including interchangeable fluid processing means |
Also Published As
Publication number | Publication date |
---|---|
JP2000512583A (ja) | 2000-09-26 |
EP0914240A1 (de) | 1999-05-12 |
CN1081979C (zh) | 2002-04-03 |
CA2258297A1 (en) | 1998-10-29 |
CN1222880A (zh) | 1999-07-14 |
DE19716127C1 (de) | 1998-03-05 |
US6102560A (en) | 2000-08-15 |
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