EP0270901A2 - Centrifuge de filage - Google Patents

Centrifuge de filage Download PDF

Info

Publication number
EP0270901A2
EP0270901A2 EP87117262A EP87117262A EP0270901A2 EP 0270901 A2 EP0270901 A2 EP 0270901A2 EP 87117262 A EP87117262 A EP 87117262A EP 87117262 A EP87117262 A EP 87117262A EP 0270901 A2 EP0270901 A2 EP 0270901A2
Authority
EP
European Patent Office
Prior art keywords
spinning
extruder
spinning centrifuge
centrifuge
pump
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
EP87117262A
Other languages
German (de)
English (en)
Other versions
EP0270901B1 (fr
EP0270901A3 (en
Inventor
Erich Dr. Ing. Lenk
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.)
Oerlikon Barmag AG
Original Assignee
Barmag AG
Barmag Barmer Maschinenfabrik AG
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 Barmag AG, Barmag Barmer Maschinenfabrik AG filed Critical Barmag AG
Publication of EP0270901A2 publication Critical patent/EP0270901A2/fr
Publication of EP0270901A3 publication Critical patent/EP0270901A3/de
Application granted granted Critical
Publication of EP0270901B1 publication Critical patent/EP0270901B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • D01D5/00—Formation of filaments, threads, or the like
    • D01D5/18—Formation of filaments, threads, or the like by means of rotating spinnerets

Definitions

  • the invention relates to a spinning centrifuge according to the preamble of claim 1.
  • Such a spinning centrifuge is known from European patent application 168 817.
  • the spinning mass is pumped as a spinnable liquid through an extruder, which is arranged outside the spinning pump, into the central inlet of the spinning pump.
  • the purpose of this measure is to increase the spinning pressure beyond what can be achieved by centrifugal acceleration.
  • the disadvantage of the known spinning centrifuge is that dynamic seals between the feed line and the rotating inlet channel of the spinning centrifuge are required, which in addition to the dynamic loads must also withstand considerable thermal loads and are therefore not permanently sealed. Sealing with a gas supply is not appropriate, since this would require regulation of the liquid level in the sealing space occupied by the gas supply.
  • the invention creates a spinning centrifuge in which the spinning liquid is supplied under pressure and which does not require a seal.
  • the invention results from the characterizing part of claim 1.
  • the advantage of the spinning centrifuge according to the invention is in particular that the inlet pressure of the spinning centrifuge can be chosen to be very high due to the lack of a seal.
  • An extruder is used in particular as a pump according to this invention.
  • the advantage of the extruder is that it consists of the coaxial pairing of screw and cylinder and can therefore be integrated into the central inlet of the spinning centrifuge in a simple construction.
  • the advantage of the extruder is that it does not require any pressure-loaded seals on the inlet side.
  • the casing rotates according to the invention in the pump and in particular in the extruder, it is further suggested as preferred to convey the spinning mass either in liquid form or in a still solid form of a powder or granulate into the stationary screw, the screw then having an axial filling channel with radial Has outlet channels that open into the worm gear.
  • the extruder is designed as a liquid pump or as a conveying device for powder or granules.
  • the dope is fed in a metered amount.
  • the minimum amount must at least correspond to the amount that would be spun if the liquid spin mass in the spinning centrifuge was only affected by the spin pressure caused by centrifugal acceleration.
  • the spinning mass can be supplied as a powder or granulate.
  • the extruder is advantageously equipped so that the spinning mass is melted in it. It should be in the extruder internal heat generated due to the high speed of the cylinder relative to the screw is generally sufficient for melting. If this is not the case, contactless heating, for example by radiation or induction, is proposed by the invention.
  • the spinning mass is supplied in liquid form, this can be done by means of a metering pump after the spinning mass e.g. has been melted in an extruder.
  • the melting extruder immediately before the extruder assigned to the spinning centrifuge.
  • degassing takes place in the inlet of the extruder assigned to the spinning centrifuge.
  • a degassing hole can be provided in the stationary screw. If the screw has a central inlet channel through which melt is fed, the degassing and vacuum connection is parallel to the central inlet channel and opens into the region of the screw channel in which the radial outlet channels of the central channel also open.
  • Fig. 1 the section through a spinning centrifuge 1 is shown.
  • the centrifuge consists of the centrifuge wheel 2 and the central centrifuge inlet 3 firmly connected to it.
  • the centrifuge wheel 2 has a disk-shaped radial space 4 or more radial channels.
  • the radial space 4 starts from the central inlet 3 and opens into spinning bores 5 on the circumference of the centrifuge wheel 2.
  • the central inlet 3 is designed as an extruder jacket.
  • the extruder jacket is rotatably supported in bearings 6.
  • the extruder jacket 3 is driven by the drive wheel 7 and drive belt 9 of the drive motor 8 at high speed, e.g. 500 rpm. driven.
  • the extruder jacket 3 is heated on a section by heating jacket 15.
  • the heating jacket 15 is populated with a large number of electric heating elements or heating tubes.
  • the heat transfer is preferably carried out without contact and by radiation, the heating jacket 15 being arranged in a stationary manner and forming a narrow gap
  • the extruder jacket 3 At its free end, the extruder jacket 3 is conical in the inlet area, so that it forms a filling end 10.
  • the taper is only weak, since otherwise there is a risk that the filled granules will be thrown outwards by the centrifugal force.
  • the extruder jacket is provided with axial grooves on the inlet side following the filler neck 10.
  • the extruder screw 11 is mounted in the extruder jacket 3 in the holder 12 in a stationary and stationary manner. In this exemplary embodiment, it extends almost to the level of the radial space 4. Otherwise, it is a conventional extruder design, the design of which depends on the material to be spun (spinning mass) and the other operating conditions, in particular the speed of the centrifuge wheel. If the speed of the centrifuge wheel 2 too unto casual shear rates and shear forces in the material to be spun, the screw can be rotatably supported and driven by an additional drive motor in the direction of rotation of the extruder jacket 3, so that the relative speed between the screw 11 and extruder jacket 3 is reduced.
  • the spinning mass is fed in the form of granules through metering device 13, which consists of a hopper and a conveyor belt. It is ensured that the quantity supplied per unit of time does not exceed or exceed certain limit values which depend on the speed of the centrifuge wheel 2. falls below. Exceeding the limit value is in itself harmless and only leads to overflow of the filler neck 10. The lower limit value must not be undercut.
  • the lower limit is the amount of the spinnable mass per unit of time (spinning amount) that would be spun out under the given operating conditions (in particular temperature, viscosity) at a pressure which is only generated by centrifugal acceleration at the given speed. If the amount of spinning mass added fell below this limit, the spinning centrifuge would run empty. Otherwise, there is a self-regulation between the two limit values, since a balance is established between the quantity supplied, the pressure generated by the extruder and the centrifugal acceleration on the spinning mass and the quantity spun out.
  • the extruder 2 also consists of the centrifuge wheel 2 and the central inlet 3, which is designed as an extruder jacket.
  • the extruder jacket 3 is rotatably supported in bearings 6 and is driven in rotation by drive belt 9 and drive wheel 7 and drive motor 9 ben.
  • the spinnerets are labeled 5.
  • the emerging threads can be seen.
  • radial channels are located in the interior of the centrifuge wheel, which connect the central inlet 3 to the spinning bores 5.
  • the extruder screw 11 in the exemplary embodiment according to FIG. 2 consists of the lower cylindrical part 11, which extends approximately into the centrifuge wheel 2, as well as a filling area 16 and a holder part 17.
  • a precisely metered amount is fed into the filler channel 18 and the worm gear-like recess 20 to the extruder.
  • the metering pump 13 is fed through the melt extruder 24.
  • the dope is fed to the melting extruder 24 as a powder or granulate in a metered amount.
  • the spinning mass melted by melting extruder 24 can also be fed directly into the filler pipe 19 of the extruder screw 11 and the spinning centrifuge 1.
  • the holding part 17 of the extruder screw 11 has a vacuum connection 22, which serves as a degassing channel.
  • the degassing duct is parallel to the filler duct 18 and opens into the worm gear-like recess 20, in which the introduced liquid spinning mass enters the worm thread radially outward from the central filler duct 18.
  • a vacuum pump can be connected to the degassing duct 22. This favors the degassing.
  • a seal is designated, through which the filler tube 19 is sealed in the filler channel 18 of the screw. It should be noted that this seal only has to withstand the very low melt pressures in the filling area of the extruder. The same applies to the seal 23, which seals the holding part 17 of the screw from the filler neck 10 of the extruder casing 3. Between the seals 21 and 23 is the area of the melt path in which the melt is exposed to the vacuum.
  • an extruder located in the central inlet of the spinning centrifuge has the advantage that such an extruder does not require a seal that is under high pressure.
  • the extruder can therefore generate pressures which correspond to the pressures customary in spinning.
  • the pressure generated by the centrifugal acceleration is added to this pressure. It is therefore possible to spin even highly viscous melts with fine titers without increasing the thread pulling speed from the nozzles to an unacceptable degree.
  • spinnerets with very small cross sections can be used.
  • the speed of the spinning centrifuge can be set and optimized independently of the pressure required for spinning.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
EP87117262A 1986-11-29 1987-11-24 Centrifuge de filage Expired - Lifetime EP0270901B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3640962 1986-11-29
DE19863640962 DE3640962A1 (de) 1986-11-29 1986-11-29 Spinnzentrifuge

Publications (3)

Publication Number Publication Date
EP0270901A2 true EP0270901A2 (fr) 1988-06-15
EP0270901A3 EP0270901A3 (en) 1988-08-31
EP0270901B1 EP0270901B1 (fr) 1990-12-27

Family

ID=6315179

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87117262A Expired - Lifetime EP0270901B1 (fr) 1986-11-29 1987-11-24 Centrifuge de filage

Country Status (5)

Country Link
US (1) US5075063A (fr)
EP (1) EP0270901B1 (fr)
JP (1) JPS63145405A (fr)
DE (2) DE3640962A1 (fr)
ES (1) ES2020996B3 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9731466B2 (en) * 2012-08-06 2017-08-15 Clarcor Inc. Systems and methods of supplying materials to a rotating fiber producing device
JP5656297B2 (ja) * 2012-12-25 2015-01-21 株式会社日本製鋼所 遠心紡糸装置及び遠心紡糸方法
CN105473296A (zh) * 2013-07-05 2016-04-06 北面服饰公司 纤维和长丝的力纺丝
KR101884696B1 (ko) * 2016-01-15 2018-08-03 나필찬 나노섬유 방사 장치
KR101823995B1 (ko) 2016-01-18 2018-02-01 경북대학교 산학협력단 나노섬유 방사장치
CN110257934A (zh) * 2019-06-26 2019-09-20 广东工业大学 一种熔融离心纺丝生产设备
CN114086318B (zh) * 2020-08-25 2023-02-10 华中科技大学 一种高速旋风协同的超重力熔喷纺丝装置及其使用方法

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL119272B (fr) * 1943-05-14 1900-01-01
DE889566C (de) * 1950-09-27 1953-09-10 Unda Anstalt Vorrichtung zur Auffaserung und Homogenisierung, insbesondere von tierischem Hautmaterial, zur Herstellung kuenstlicher Hautgebilde mittels Formduesen
US2715753A (en) * 1954-05-10 1955-08-23 Ind Rayon Corp Multiple end spinning and twisting apparatus
US3488416A (en) * 1967-09-27 1970-01-06 Owens Illinois Inc Elastic melt extruder and method of operation
FR1588880A (fr) * 1968-09-06 1970-03-16
DE1927067A1 (de) * 1969-05-28 1970-12-10 Barmag Barmer Maschf Schneckenpresse fuer thermoplastische Werkstoffe
US3748074A (en) * 1969-10-17 1973-07-24 H Nitta Apparatus for plasticizing thermoplastic synthetic resin
US3596312A (en) * 1970-02-10 1971-08-03 Koei Ohmatsu Apparatus for producing synthetic resin fibers utilizing centrifugal force
DE2013997A1 (de) * 1970-03-24 1971-10-21 Farbenfabriken Bayer Ag, 5090 Leverkusen Verfahren zur Herstellung von Monofilen aus einem Polyamid-Polyestergemisch durch Schmelzspinnen
US3737506A (en) * 1970-04-03 1973-06-05 Viscose Suisse Soc D Process and apparatus for continuous extrusion of highly-viscous melts
JPS4825003B1 (fr) * 1970-12-29 1973-07-25
US3800985A (en) * 1971-04-15 1974-04-02 Kenics Corp System and method for distributing highly viscous molten material
JPS59196208A (ja) * 1983-04-22 1984-11-07 Japan Steel Works Ltd:The 溶融樹脂脱気装置
US4790736A (en) * 1984-07-20 1988-12-13 John E. Benoit Apparatus for centrifugal fiber spinning with pressure extrusion
JPH084703A (ja) * 1994-06-21 1996-01-09 Shimadzu Corp 液圧サーボ装置

Also Published As

Publication number Publication date
EP0270901B1 (fr) 1990-12-27
US5075063A (en) 1991-12-24
JPS63145405A (ja) 1988-06-17
DE3767141D1 (de) 1991-02-07
ES2020996B3 (es) 1991-10-16
EP0270901A3 (en) 1988-08-31
DE3640962A1 (de) 1988-06-09

Similar Documents

Publication Publication Date Title
EP0597271B1 (fr) Procédé pour le traitement de fonte thermoplastique avec une pompe à engrenages
US3664795A (en) Screw extruders with dual section ejection zone
GB1590506A (en) Process for the concentration of solutions with simultaneous setting
WO2007090849A1 (fr) Essoreuse centrifuge A vis et enveloppe complete et SON procede D'utilisation
EP0270901B1 (fr) Centrifuge de filage
DE1941673A1 (de) Zahnradpumpe mit keilfoermig verjuengten Einzugskammern
DE2924317C2 (de) Zweistufige Strangpreßvorrichtung für thermoplastische Formmassen, insbesondere für pulverförmige Kunststoffe
DE10342822B4 (de) Extruder zum Herstellen von syntaktischem Kunststoff
EP3999296B1 (fr) Extrudeuse conçue pour préparer des polymères fusibles de manière à accroître leur viscosité
EP0100945B1 (fr) Partie de trémie d'une extrudeuse à vis unique
EP0426790B1 (fr) Dispositif pour le formage de matieres synthetiques thermoplastiques
DE2360735C3 (de) Extruder für Kunststoff
DE69736361T2 (de) Bildung einer Lösung aus Fluiden mit niedriger Mischbarkeit und grossem Unterschied in der Viskosität
DE3915603C1 (fr)
EP3995278A1 (fr) Procédé et dispositif de traitement de polycondensats
DE2212389A1 (de) Verfahren und Vorrichtung zur Foerderung von partikelfoermigem Material aus einer Speisezone in eine Ablieferungszone,insbesondere fuer das Schmelzspinnen,sowie Schmelzererzeugungseinheit und Schmelzspinnmaschine hierfuer
DE2654774B2 (de) Schneckenmaschine zur Homogenisierung von aufgeschmolzenen Polymeren
EP3175967A1 (fr) Procédé de préparation d'une fusion de styrène-acrylonitrile
DE2910041C2 (de) Schneckenpresse zur Verarbeitung von polymeren Materialien
US3131430A (en) Extrusion worm for the melting of organic thermoplastics
US3474773A (en) Polymer melt screw pump for fiber spinning
DE2406569A1 (de) Verfahren und vorrichtung zum strangpressen von thermoplastischen werkstoffen
DE2332803C3 (de) Vorrichtung zum Herstellen von Folien und Platten aus thermoplastischen Kunststoffen
DE3142948C2 (de) Einwellige Schneckenpresse
DE2630173A1 (de) Verfahren und vorrichtung zur verkuerzung der molekuelketten bei polymeren

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): BE CH DE ES FR GB IT LI LU NL

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): BE CH DE ES FR GB IT LI LU NL

17P Request for examination filed

Effective date: 19880722

17Q First examination report despatched

Effective date: 19900504

ITF It: translation for a ep patent filed
GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): BE CH DE ES FR GB IT LI LU NL

ET Fr: translation filed
REF Corresponds to:

Ref document number: 3767141

Country of ref document: DE

Date of ref document: 19910207

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

ITTA It: last paid annual fee
26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 19921119

Year of fee payment: 6

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: LU

Payment date: 19931101

Year of fee payment: 7

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19931116

Year of fee payment: 7

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19931122

Year of fee payment: 7

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 19931125

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 19931126

Year of fee payment: 7

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 19931130

Year of fee payment: 7

EPTA Lu: last paid annual fee
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 19940106

Year of fee payment: 7

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19941124

Ref country code: GB

Effective date: 19941124

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Effective date: 19941130

Ref country code: CH

Effective date: 19941130

Ref country code: BE

Effective date: 19941130

BERE Be: lapsed

Owner name: BARMAG A.G.

Effective date: 19941130

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Effective date: 19950601

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee
GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19941124

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Effective date: 19950731

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19951128

Year of fee payment: 9

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19970801

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20010301

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20051124