EP0571322A1 - Dispositif pour le frisage continu des fils thermoplastiques - Google Patents

Dispositif pour le frisage continu des fils thermoplastiques Download PDF

Info

Publication number: EP0571322A1
Authority: EP; European Patent Office
Prior art keywords: plug; guide; stuffer box; guide elements; nozzle outlet
Prior art date: 1992-05-20
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

EP93810310A

Other languages

German (de)

English (en)

Other versions

EP0571322B1 (fr

Inventor

Werner Nabulon

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.)

Maschinenfabrik Rieter AG

Original Assignee

Maschinenfabrik Rieter 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.)

1992-05-20

Filing date

1993-04-28

Publication date

1993-11-24

1993-04-28 Application filed by Maschinenfabrik Rieter AG filed Critical Maschinenfabrik Rieter AG

1993-11-24 Publication of EP0571322A1 publication Critical patent/EP0571322A1/fr

1996-09-25 Application granted granted Critical

1996-09-25 Publication of EP0571322B1 publication Critical patent/EP0571322B1/fr

2013-04-28 Anticipated expiration legal-status Critical

Status Expired - Lifetime legal-status Critical Current

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Images

Classifications

- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
- D02G1/00—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics
- D02G1/12—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics using stuffer boxes
- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
- D02G1/00—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics
- D02G1/12—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics using stuffer boxes
- D02G1/122—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics using stuffer boxes introducing the filaments in the stuffer box by means of a fluid jet

Definitions

the invention is in the field of textile technology and relates to a device according to the preamble of the independent claim, which is used for the continuous crimping of threads made of a thermoplastic material.
threads for the continuous crimping of threads (fibril bundles) made of a thermoplastic material
these are moved, for example, with the aid of a hot conveying medium flowing under pressure, through a conveying channel, heated and then conveyed through a nozzle outlet opening into a stuffer box, the stuffer box being designed in such a way that the Pumped medium relaxes when exiting the nozzle outlet opening.
the thread impinges in the stuffer box on a plug formed by a thread that has already emerged from the opening, whereby it is crimped.
the plug is transported further and cooled at a speed which is lower than the thread speed in the conveying channel, in order to be broken down into a textured yarn in the further process.
European Patent Specification No. 310890 by the same applicant describes a method and an apparatus for the continuous crimping of thermoplastic threads.
the described embodiments of the device have a crimping nozzle with a conveying channel through which the thread is conveyed against a nozzle outlet opening with the aid of a flowing conveying medium, and a rotating plug conveying roller on which the plug is arranged between lateral guide means, for example rows, arranged around the circumference of the roller of radially arranged needles.
the crimping nozzle is arranged with the nozzle outlet opening against the plug conveyor roller and essentially tangentially to it.
the plug Immediately outside the nozzle outlet opening, the plug is formed in a stuffer box formed by stationary guide means arranged in the region of the nozzle outlet opening and the lateral guide means moved on the plug conveyor roller.
the plug that forms in this stuffer box is limited in such a way that it is arranged between the lateral guide means without touching the plug conveyor roller itself and without extending radially over these guide means.
the plug emerging from the stuffer box is so stable that the axial guidance of the lateral guide means is sufficient for its further transport in the same position.
the device for the continuous crimping of thermoplastic threads with regard to the ventilation of the stuffer box to improve.
the device for operation and maintenance should not become more complex.
Figure 1 shows a device for the continuous crimping of thermoplastic threads in a section perpendicular to the axis of a plug conveyor roller 1.
the plug conveyor roller 1 carries lateral guide means around its circumference, for example two parallel rows of needles 2, one of which is visible in the figure and between which the Graft is positioned.
the figure also shows a crimping nozzle 3 with a conveying channel and a nozzle outlet opening 4 and a guide fork (stationary guide means), for example molded onto the crimping nozzle 3 in the region of the nozzle outlet opening 4, which consists of a lower guide element 5 and an upper guide element 6.
the plug feed roller 1 and the curling nozzle 3 are arranged in such a way that the two rows of needles 2 and the two guide elements 5 and 6 form a stuffer box that runs essentially tangentially to the plug-conveying roller 1 and that the two rows of needles 2 in the axial direction of the roller, the two guide elements 5 and 6 in the radial direction of the Limit the roller in such a way that the plug emerging from the stuffer box is spaced from the peripheral surface of the plug conveyor roller 1 and lies within the radial region of the rows of needles 2.
the crimping takes place in three areas: first, the thread F is heated in the heating area A, then the plug is formed in the plug formation area B and guided under all-round guidance until it is stable enough for further process steps without all-round guidance through the plug transport area C. like cooling and grafting to be moved.
the conveying channel represents the heating area A
the stuffer box formed by the rows of needles 2 and the guide elements 5 and 6 represents the plug formation area B
the conduit connected to the upsetting chamber and formed by the rows of needles represents the plug further transport area C.
FIG 2 now shows the plug formation area B according to the prior art, as described in the already cited European Patent No. 310890.
the figure shows a section through the stuffer box 7 according to the arrows II in Figure 1.
the plug conveyor roller 1 with the two rows of needles 2 can be seen and between the two rows of needles 2 the two stationary guide elements 5.1 and 6.1.
These are each in one piece and, as a delimitation of the stuffer box 7, represent compact surfaces which delimit the freshly formed plug on two opposite sides.
the plug is limited by the rows of needles 2.
the pumped medium in this embodiment according to the arrows indicated in the figure between the needles of the rows of needles 2 and through the spaces between rows of needles and stationary guide elements.
the one-piece guide elements represent an obstacle to the escaping medium and, through it, compact and stationary surfaces on which the plug rubs.
FIG. 3 now shows the plug formation area of an exemplary embodiment of the device according to the invention.
the stuffer box 7 is also laterally delimited by the two rows of needles 2, radially by a lower guide element 5.2 and an upper guide element 6.2.
the guide elements 5.2 and 6.2 are broken through in the radial direction. This opens up more ways for the medium to relax in accordance with the arrows, so that it runs along with the plug for a shorter distance and this comes into contact with the cooler outside air more quickly.
This interruption of the guiding surfaces also ensures that the conveying medium is routed in the same way on all sides and that the plug is cooled in the same way on all sides.
the guide elements 5.2 and 6.2 consist of individual lamellae arranged next to one another parallel to the axis of the plug conveyor roller 1, with spaces being provided between the lamellae.
This embodiment has the advantage that it is almost equivalent to the robustness of the prior art embodiment. It turns out, however, that dirt can accumulate between the lamellae, in particular in the areas of the intermediate spaces facing away from the plug, which must be removed regularly if the advantages of the perforated guide elements are to be preserved.
FIG. 4 shows a further exemplary embodiment of the plug formation area of the device according to the invention. It has guide elements 5.3 and 6.3, which are designed as a series of needles. Since individual thread loops in the plug that is formed will also pass through between the needles and since these loops move along the needles in the interstices, these interstices are continuously cleaned, so that the disadvantage of the embodiment according to FIG. 3 is eliminated.
the guide elements 5.3 and 6.3 are more sensitive to damage when threading and when removing the plug feed roller 1.
FIG. 5 shows a further exemplary embodiment of the plug formation area of the device according to the invention.
the guide elements 5.4 and 6.4 are formed by lamellae, the spaces between which widen away from the plug channel, in that the lamellae become correspondingly thinner. With this embodiment, a sufficient guidance of the plug can be ensured, although the areas of the interstices between the lamellae which are not automatically cleaned are nevertheless so wide that clogging due to contamination becomes unlikely.
the illustrated embodiments of the device according to the invention merely represent examples. Further embodiments are conceivable in which the side walls of the stuffer box are not rows of needles but walls which are otherwise perforated. Furthermore, embodiments are conceivable in which only one of the guide elements is broken or both guide elements are broken in different ways. Other shapes of the guide element parts are also conceivable.

Landscapes

Engineering & Computer Science (AREA)
Mechanical Engineering (AREA)
Textile Engineering (AREA)
Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)

EP93810310A 1992-05-20 1993-04-28 Dispositif pour le frisage continu des fils thermoplastiques Expired - Lifetime EP0571322B1 (fr)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
CH1613/92		1992-05-20
CH161392		1992-05-20

Publications (2)

Publication Number	Publication Date
EP0571322A1 true EP0571322A1 (fr)	1993-11-24
EP0571322B1 EP0571322B1 (fr)	1996-09-25

Family

ID=4214539

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP93810310A Expired - Lifetime EP0571322B1 (fr)	1992-05-20	1993-04-28	Dispositif pour le frisage continu des fils thermoplastiques

Country Status (4)

Country	Link
US (1)	US5365644A (fr)
EP (1)	EP0571322B1 (fr)
JP (1)	JPH0610223A (fr)
DE (1)	DE59303929D1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US6311375B1 (en) *	2000-07-27	2001-11-06	Gilbert Patrick	Method of needle punching yarns
DE102014002318A1 (de) *	2014-02-19	2015-08-20	Oerlikon Textile Gmbh & Co. Kg	Vorrichtung zum Kräuseln multifiler Fäden

Citations (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
FR2301615A1 (fr) *	1975-02-22	1976-09-17	Karlsruhe Augsburg Iweka	Procede pour le frisage de fils synthetiques
EP0310890A1 (fr) *	1987-10-05	1989-04-12	Maschinenfabrik Rieter Ag	Procédé et appareil pour le frisage en continu de fils thermoplastiques

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
SU502983A1 (ru) *	1973-02-09	1976-02-15	Феб Шпинераймашиненбау Карл-Марксштадт (Инопредприятие)	Устройство дл получени высокосъемной нити
US4450607A (en) *	1975-10-02	1984-05-29	Allied Corporation	Method for texturizing continuous filaments
DE2631393C3 (de) *	1976-07-13	1984-09-20	Bayer Ag, 5090 Leverkusen	Düsenvorrichtung zur Herstellung texturierter Filamentgarne

1993
- 1993-04-28 DE DE59303929T patent/DE59303929D1/de not_active Expired - Fee Related
- 1993-04-28 EP EP93810310A patent/EP0571322B1/fr not_active Expired - Lifetime
- 1993-05-13 JP JP5111519A patent/JPH0610223A/ja active Pending
- 1993-05-19 US US08/063,324 patent/US5365644A/en not_active Expired - Fee Related

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
FR2301615A1 (fr) *	1975-02-22	1976-09-17	Karlsruhe Augsburg Iweka	Procede pour le frisage de fils synthetiques
EP0310890A1 (fr) *	1987-10-05	1989-04-12	Maschinenfabrik Rieter Ag	Procédé et appareil pour le frisage en continu de fils thermoplastiques

Also Published As

Publication number	Publication date
US5365644A (en)	1994-11-22
JPH0610223A (ja)	1994-01-18
EP0571322B1 (fr)	1996-09-25
DE59303929D1 (de)	1996-10-31

Legal Events

Date	Code	Title	Description
1993-10-08	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
1993-11-24	AK	Designated contracting states	Kind code of ref document: A1 Designated state(s): CH DE FR GB IT LI
1994-06-29	17P	Request for examination filed	Effective date: 19940429
1996-03-02	GRAG	Despatch of communication of intention to grant	Free format text: ORIGINAL CODE: EPIDOS AGRA
1996-03-22	GRAH	Despatch of communication of intention to grant a patent	Free format text: ORIGINAL CODE: EPIDOS IGRA
1996-04-17	17Q	First examination report despatched	Effective date: 19960305
1996-05-25	GRAH	Despatch of communication of intention to grant a patent	Free format text: ORIGINAL CODE: EPIDOS IGRA
1996-08-09	GRAA	(expected) grant	Free format text: ORIGINAL CODE: 0009210
1996-09-25	AK	Designated contracting states	Kind code of ref document: B1 Designated state(s): CH DE FR GB IT LI
1996-09-25	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: GB Effective date: 19960925
1996-10-31	REF	Corresponds to:	Ref document number: 59303929 Country of ref document: DE Date of ref document: 19961031
1996-12-11	ITF	It: translation for a ep patent filed	Owner name: GUZZI E RAVIZZA S.R.L.
1996-12-13	ET	Fr: translation filed
1997-03-26	GBV	Gb: ep patent (uk) treated as always having been void in accordance with gb section 77(7)/1977 [no translation filed]	Effective date: 19960925
1997-08-01	PLBE	No opposition filed within time limit	Free format text: ORIGINAL CODE: 0009261
1997-08-01	STAA	Information on the status of an ep patent application or granted ep patent	Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT
1997-09-17	26N	No opposition filed
2000-03-28	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: FR Payment date: 20000328 Year of fee payment: 8
2001-04-30	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: FR Free format text: THE PATENT HAS BEEN ANNULLED BY A DECISION OF A NATIONAL AUTHORITY Effective date: 20010430
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