EP0957186A2 - Elément d'étanchéité pour conduites de matière fondue - Google Patents

Elément d'étanchéité pour conduites de matière fondue Download PDF

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Publication number
EP0957186A2
EP0957186A2 EP99107371A EP99107371A EP0957186A2 EP 0957186 A2 EP0957186 A2 EP 0957186A2 EP 99107371 A EP99107371 A EP 99107371A EP 99107371 A EP99107371 A EP 99107371A EP 0957186 A2 EP0957186 A2 EP 0957186A2
Authority
EP
European Patent Office
Prior art keywords
sealing element
hollow body
melt
element according
component
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.)
Granted
Application number
EP99107371A
Other languages
German (de)
English (en)
Other versions
EP0957186B1 (fr
EP0957186A3 (fr
Inventor
Heinz- Dieter Beeck
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
LL Plant Engineering AG
Original Assignee
Lurgi Zimmer GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Lurgi Zimmer GmbH filed Critical Lurgi Zimmer GmbH
Publication of EP0957186A2 publication Critical patent/EP0957186A2/fr
Publication of EP0957186A3 publication Critical patent/EP0957186A3/fr
Application granted granted Critical
Publication of EP0957186B1 publication Critical patent/EP0957186B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D1/00—Treatment of filament-forming or like material
    • D01D1/06—Feeding liquid to the spinning head
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S277/00—Seal for a joint or juncture
    • Y10S277/935—Seal made of a particular material
    • Y10S277/939—Containing metal
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S425/00—Plastic article or earthenware shaping or treating: apparatus
    • Y10S425/049—Spinnerette mixer

Definitions

  • the invention relates to a sealing element for sealing the Transition of a melt channel leading a polymer melt assembled component in a melt channel of a removable, replaceable component.
  • the fixed component is preferred a spinning beam and the replaceable component a nozzle adapter Melt spinning system.
  • the heating vessel also called the spinning beam
  • the individual spinning package used for coupling adapters or nozzle adapters so that each individual spin pack for cleaning and reassembly of the Spin pack items can be easily replaced.
  • metal O-rings are usually used in front grooves so that the Spinning operating pressure of a minimum of 80 to a maximum of 350 bar depending on the polymer at spinning temperatures of over 150 ° C up to a maximum of 320 ° C not too Leakage of the polymer melt leads.
  • the counter surfaces must, if the Adapters themselves are changed more often, from impressive ones Materials exist, e.g. B.
  • the assembly problem is that the spinning system at Initial assembly cold, d. H. at normal room temperature, assembled is, however, the change of the adapter with or without mixer in the hot Operating state must go. It happens so that it is too changing component, here the nozzle adapter, is hot removed and is replaced by a fresh and cold component. This does not apply only the said nozzle adapters with or without a mixer, but in general all components with polymer melt leading lines with any additional accessories that are changed more often must be equipped.
  • the object of the invention is therefore to provide a sealing element To make available a frequent component change enables inexpensive, comfortable conditions and at the same time a secure sealing guaranteed.
  • a Sealing element which is characterized in that it is made of a cylindrical and externally smooth hollow body 15 with an axial Bore 16 for the melt passage, which in the interchangeable component 12 in a suitable receiving bore 19th is used and is made of a material that one has a higher coefficient of thermal expansion than the surrounding one Material of the replaceable component 12.
  • a cylindrical and externally smooth hollow body is used an axial hole for the melt to pass into a suitable one Location hole of the replaceable component is flush with the face.
  • the fit of the components is chosen so that the hollow body at usual room temperature easily into the cavity of the replaceable Component can slide in.
  • the hollow body must always be in the part be housed, which must be removable or removable.
  • a protrusion of the hollow body in the other, opposing component is not required and also not desirable as it is for disassembly in hot condition would be a hindrance.
  • the contact surfaces of the two components to be sealed do not need any additional components Sealing grooves or other baffles as sealing aids, but can be carried out completely flat and smooth.
  • the hollow body must be made of a material with a higher Coefficients of thermal expansion exist than that of the one bearing it Part. After heating up the cold installed component and the said hollow body occurs up to the operating temperature, the axial and radial sealing effect. The sealing function is done by the different thermal expansion of the parts joined together reached. This means that the sealing function only at temperatures in the Area of the polymer melting point. Due to the volume increase of the hollow body, it then sits absolutely firmly and without gaps in the Bore and also seals completely on the end faces. After a The parts are easy to cool down again at normal ambient temperature removable. Because the hollow body is only in the interchangeable Component is embedded, this component can also be hot Dismantle the condition of the fixed component and by a another still cold component with flush to the sealing surface replace recessed hollow body.
  • the sealing concept according to the invention of the different Thermal expansion is particularly suitable for melt spinning systems, however also for other purposes, such as B. diameter adjustments in the Melt line or branches and injector connections, and is particularly advantageous for all applications in which melt-carrying parts are mounted cold but also hot must be removable.
  • melt spinning systems with Melt channels where the mixer is as close as possible to the spinneret must be used, but also where mixers in other places in accessible to the melt line or quickly exchangeable should be.
  • static mixers are selected so that the free one Cross section corresponds to the cable cross section. So the mixers are They are much larger in diameter and are supported on the front on a narrow ring surface, or must be soldered in or be welded in so that a dead space-free transition of the Polymer melt from and into the line is made possible. Now choose the material combination so that the mixer through Expands heat even more than that as a cladding tube functioning hollow body, there is a fixation of the mixer at spinning or operating temperature, the mixer after cooling remains changeable to room temperature.
  • the sealing effect is independent of the mixer, can instead of the cladding tube or hollow body, in which the mixer is integrated, the cladding tube alone as a pure one Empty pipe can be installed if the mixing function is temporarily undesirable is, or other mixer types can also be used due to the process corresponding cladding tube in the mounting hole of the nozzle adapter or of the interchangeable component.
  • the material of the nozzle adapter is usually stainless and heat resistant chrome steel, such as. B. the X 20 CrNi 17 2 (Material no.1.4057).
  • the material of the hollow body or cladding tube (regardless of whether it is used with a mixer or without) e.g. B. the X 6 CrNiTi 18 10 (material no. 1.4541) or a X 6 CrNiMoTi 17 12 2 (material no.1.4571) or a similar material with a correspondingly large coefficient of thermal expansion.
  • the fit pairing is appropriate for each application Material pairing and dimensioning of the parts according to well-known Recalculate formulas to make the call for colder Smoothness and hot press fit is met.
  • the material of the Mixer only plays a role, if one for him temperature-related fixation in the cladding tube is sought.
  • the hollow body can be very short, however the length should not be less than half the outer diameter be carried out.
  • a diameter to length ratio of is optimal 1: 1.
  • the outer diameter of the hollow body is preferably 1.5 to 2.0 times the largest inside diameter of the melt channels or the melt-carrying bore through the hollow body.
  • This hole is, provided the two melt channels to be sealed on the Transition plane have the same diameter, cylindrical.
  • the hollow body according to the invention is in addition to it Sealing function also for adapting various Suitable cable diameter. In this case the hole is, at least partially, according to the different diameters, conical executed.
  • the cladding tube according to the invention not only makes it expensive Sealing elements saved, but also easily Adaptations to different line diameters as well as any and allows quick change of static mixers.
  • the nozzle installation space 2 is shown without a spin pack, it will only the nozzle adapter 3 shown, which by means of screws 4 on Spinning beam is attached.
  • the adapter 3 sits in the Receiving bore 9 of the hollow body or the cladding tube 5, in which a static mixer 6 is installed.
  • the melt channel 7, from which Coming spinning beam 1 is via the mixer 6 with the melt channel 8 connected in the nozzle adapter 3 and via the cladding tube 5 Operating temperature (temperature of the polymer melt) in all directions sealed.
  • the cladding tube 5 can also be empty to the To fulfill the sealing function. It just has to be made of one material exist, which has a higher coefficient of thermal expansion than that surrounding nozzle adapter material.
  • the sealing function is thereby Spinning temperature due to the greater expansion of the built-in Cladding tube 5 in relation to the space enveloping it in the nozzle adapter 3 achieved.
  • the formerly cold installed Nozzle adapter 3 removed and completely hot again another, still cold, to be replaced because of the seal between spinning beam 1 and adapter 3 only through the end face Pressing takes place when heated to operating temperature.
  • the two melt channels 17 and 18 also be the same size, then the inner bore 16 of the short Pipe piece 15 also the same inner diameter without Reduction.
  • the short pipe section 15 has one in each case Outside diameter that is at least 1.5 times to twice the size the diameter of the larger melt channel, and a length that at least half, preferably up to the entire own outside diameter corresponds.
  • the wall thickness of the load-bearing part itself may also be used not to be too weak, because of the thermal expansion of the pipe section 15 generated pressing pressure and possibly the pressure in the To withstand melt channels 17 and 18 circulating polymer melt.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
EP99107371A 1998-05-13 1999-04-22 Elément d'étanchéité pour conduites de matière fondue Expired - Lifetime EP0957186B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19821406 1998-05-13
DE19821406A DE19821406A1 (de) 1998-05-13 1998-05-13 Abdichtungselement für Schmelzekanäle

Publications (3)

Publication Number Publication Date
EP0957186A2 true EP0957186A2 (fr) 1999-11-17
EP0957186A3 EP0957186A3 (fr) 2000-05-10
EP0957186B1 EP0957186B1 (fr) 2004-07-28

Family

ID=7867621

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99107371A Expired - Lifetime EP0957186B1 (fr) 1998-05-13 1999-04-22 Elément d'étanchéité pour conduites de matière fondue

Country Status (3)

Country Link
US (1) US6357762B1 (fr)
EP (1) EP0957186B1 (fr)
DE (2) DE19821406A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2711659A3 (fr) * 2012-09-19 2016-01-06 Benteler Automobiltechnik GmbH Procédé de fabrication d'un échangeur thermique

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080199554A1 (en) * 2004-05-17 2008-08-21 Husky Injection Molding Systems Ltd. Method and apparatus for coupling melt conduits in a molding system and/or a runner system
CN104389033B (zh) * 2014-12-04 2017-07-21 郑州中远氨纶工程技术有限公司 弹性纤维干法纺丝用控温箱

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4043726A (en) * 1975-05-21 1977-08-23 Fuji Plastic Co. Ltd. Hot runner type mold
US4219323A (en) * 1979-05-09 1980-08-26 The Broadway Companies, Inc. Self-compensating hot manifold link
GB2059862A (en) * 1979-09-26 1981-04-29 Ewikon Entwicklung Konstr Apparatus having a heated duct system for feeding molten plastics material to an injection mould
US4422841A (en) * 1981-05-07 1983-12-27 Dante Alfonsi Hot runner system in plastics molding tools
DE4320584A1 (de) * 1993-06-22 1995-01-05 Wolff Hans Martin Heißkanalverteiler

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1660209A1 (de) * 1965-07-15 1970-02-05 Barmag Barmer Maschf Schmelzespinnkopf fuer das Spinnen unter hohem Druck
CH445840A (de) * 1966-04-09 1967-10-31 Barmag Barmer Maschf Vorrichtung an einer Strangpresse zum Abdichten der Anschlussstelle zwischen einem Zuführorgan und einem Werkzeug oder Werkzeugfutter
DE1286261B (de) * 1967-05-22 1969-01-02 Vickers Zimmer Ag Spinnvorrichtung
DE2248756B2 (de) * 1972-10-05 1976-06-10 Barmag Barmer Maschinenfabrik Ag, 5600 Wuppertal Spinnkopf zum spinnen plastischer massen
US4333629A (en) * 1980-03-11 1982-06-08 Pepsico, Inc. Floating manifold for multi-cavity injection mold
US4494921A (en) * 1983-08-08 1985-01-22 E. I. Du Pont De Nemours And Company Filter element
JPS60199906A (ja) * 1984-03-19 1985-10-09 Toray Ind Inc 紡糸ブロツク
US4696633A (en) * 1984-05-26 1987-09-29 Barmag Ag Melt spinning apparatus
KR930012184B1 (ko) * 1989-11-27 1993-12-24 바마크 악티엔 게젤샤프트 용융 방사장치
DE4236570A1 (fr) * 1991-12-06 1993-06-09 Akzo N.V., Arnheim/Arnhem, Nl
US5645874A (en) * 1992-08-31 1997-07-08 Osuna-Diaz; Jesus'm. Multiple gate injection nozzle
US5628517A (en) * 1993-06-01 1997-05-13 Florida Atlantic University Contracting/expanding self-sealing cryogenic tube seals
DE4419284C1 (de) * 1994-06-01 1995-10-26 Gneuss Kunststofftechnik Gmbh Plattensiebwechsler
CA2180603A1 (fr) 1996-07-05 1998-01-06 Jobst Ulrich Gellert Rampes de buses pour moulage par injection et raccord
CA2205978C (fr) * 1997-05-23 2005-01-18 Jobst Ulrich Gellert Manchon de raccordement de collecteurs de moulage par injection

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4043726A (en) * 1975-05-21 1977-08-23 Fuji Plastic Co. Ltd. Hot runner type mold
US4219323A (en) * 1979-05-09 1980-08-26 The Broadway Companies, Inc. Self-compensating hot manifold link
GB2059862A (en) * 1979-09-26 1981-04-29 Ewikon Entwicklung Konstr Apparatus having a heated duct system for feeding molten plastics material to an injection mould
US4422841A (en) * 1981-05-07 1983-12-27 Dante Alfonsi Hot runner system in plastics molding tools
DE4320584A1 (de) * 1993-06-22 1995-01-05 Wolff Hans Martin Heißkanalverteiler

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2711659A3 (fr) * 2012-09-19 2016-01-06 Benteler Automobiltechnik GmbH Procédé de fabrication d'un échangeur thermique
EP3054259A1 (fr) * 2012-09-19 2016-08-10 Benteler Automobiltechnik GmbH Procede de fabrication d'un echangeur thermique

Also Published As

Publication number Publication date
EP0957186B1 (fr) 2004-07-28
US6357762B1 (en) 2002-03-19
DE59910040D1 (de) 2004-09-02
DE19821406A1 (de) 1999-11-18
EP0957186A3 (fr) 2000-05-10

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