EP0178570B1 - Filière - Google Patents

Filière Download PDF

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Publication number
EP0178570B1
EP0178570B1 EP85112709A EP85112709A EP0178570B1 EP 0178570 B1 EP0178570 B1 EP 0178570B1 EP 85112709 A EP85112709 A EP 85112709A EP 85112709 A EP85112709 A EP 85112709A EP 0178570 B1 EP0178570 B1 EP 0178570B1
Authority
EP
European Patent Office
Prior art keywords
spinning head
melt
head according
distributor element
filter
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.)
Expired
Application number
EP85112709A
Other languages
German (de)
English (en)
Other versions
EP0178570A2 (fr
EP0178570A3 (en
Inventor
Erich 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
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 filed Critical Barmag AG
Publication of EP0178570A2 publication Critical patent/EP0178570A2/fr
Publication of EP0178570A3 publication Critical patent/EP0178570A3/de
Application granted granted Critical
Publication of EP0178570B1 publication Critical patent/EP0178570B1/fr
Expired 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
    • D01D1/10—Filtering or de-aerating the spinning solution or melt
    • D01D1/106—Filtering
    • 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
    • D01D4/00—Spinnerette packs; Cleaning thereof

Definitions

  • a spinning head which, with low use of material, has the highest pressures of e.g. B. withstands more than 1000 at.
  • the spinning head has a pot-shaped housing.
  • a distributor element and a union screw ring are screwed into this.
  • the union screw ring serves as a holder for the nozzle plate.
  • the space between the distributor element and the nozzle plate and the filter space are sealed laterally by sealing elements.
  • the object of the invention is also to significantly reduce the axial forces loading the spinning head and to further simplify the construction of such a high-pressure spinning head, in particular also to avoid the disadvantage that the high axial compressive forces also result in correspondingly large loads for the connecting elements the individual parts of the spinning head are held together.
  • the solution specified in claim 1 turns away from the principle of providing only one filter space in the spinning head in order to achieve a large filter area. Rather, the total filter area is distributed among individual small filters, which are housed in relatively small filter rooms. These filter rooms are located in a solid, pressure-resistant part of the spinning head. They are individually connected to the melt line, while they open out in the anteroom in front of the nozzle plate.
  • the invention thus consists in throttling the melt flow intended in a high-pressure spinning head in a multiplicity of filter chambers which are accommodated in a solid component, and in ensuring that the feed lines to these individual chambers directly with the melt line communicate and that the sum "of their cross-sectional areas is not or only insignificantly larger than the cross-sectional area of the melt pipe.
  • the spinning head itself is designed as the solid component to which the nozzle plate, e.g. B. is pressed by a nozzle holder. Only at the connection point at which the spinning head is connected to the melt line coming from the extruder, the metering pump or other components of the spinning system, compressive forces arise on the cross-sectional area of the melt line. To accommodate these compressive forces are common pipe connectors such. B. fittings suitable.
  • the spinning head be designed as a hollow cylindrical housing, in which a distributor element is inserted as a solid component so that it can move in the axial direction.
  • the filter chambers are formed in the distributor element.
  • the filter chambers open out on the top of this distributor element in a cross-sectional area which corresponds to the cross-section of the mouth of the melt line into the housing.
  • the distributor element lies against the housing cover via a seal, the seal closely surrounding the cross-section of the orifice of the melt line. Since the opening cross section of the melt line or seal is relatively small, the compressive forces which act on the distributor element are relatively small.
  • the opening cross-section of the melt line in the housing so small in relation to the cross-sectional area of the cavity formed between the nozzle plate and the distributor element that the compressive forces acting in the cavity are sufficient despite the reduction in pressure by the filters, the distributor element self-sealing to the Apply seal that surrounds the mouth of the melt line.
  • the filter spaces are preferably cylindrical.
  • a filter candle is sealingly fitted at the lower end, z. B. screwed.
  • the filter candle protrudes into the upper one Filter space. It has an axial channel closed at its free end, through which the melt, which penetrates the filter candle radially, can flow into the cavity between the distributor element and the nozzle plate.
  • the reverse arrangement is also possible, the melt initially entering the axial channel of the filter candle and then flowing radially through the filter candle from the inside to the outside.
  • the filter spaces open at the bottom into a cavity formed on the top of the nozzle plate, in which the melt emerging from the filter chambers is distributed to the individual nozzle bores.
  • the filter chambers can stand with their axes perpendicular or inclined on the nozzle plate.
  • the mouths of the filter chambers are preferably distributed symmetrically over the nozzle surface, so that all nozzle bores are flowed at with the same pressure.
  • the total number of cross sections of the filter chambers are essentially reduced to the cross section of the melt line.
  • the filter spaces can be designed so that they all meet with their inlet end in the mouth cross section of the melt channel.
  • the axes of the filter chambers preferably meet at a point that lies on the axis of the melt channel.
  • the nozzle holder has to be connected mechanically pressure-tight to the housing of the spinning head. This is also preferably done by means of a thread, a multi-start thread, a thread that is partially recessed on peripheral areas and designed in the manner of a bayonet lock, and the like. It will preferably be a mechanical connection with the external thread of the nozzle holder and the internal thread of the housing.
  • the nozzle holder above the nozzle plate has a cylindrical projection, the inner cross section of which is adapted to the cross section of the distributor element and which carries the thread or the other mechanical connection to the housing on the outside.
  • the nozzle holder becomes part of the cylindrical interior into which the distributor element is slidably fitted as a piston. It should be noted that this piston only has to perform the movements required for sealing.
  • the interior space formed by the housing and the nozzle holder and, accordingly, the distributor element can be designed in a step-like manner, both options being open for the nozzle holder or the housing to have the smaller internal cross section.
  • the housing and the nozzle holder preferably have the same inner cross section. For this it is necessary that the threaded axial area of the housing has a larger cross section than the axial area serving as a cylinder.
  • the distributor element, the nozzle plate and the nozzle holder are dimensioned in the melt flow direction in such a way that by screwing the nozzle holder into the housing, the distributor element lies against the seals which surround the mouth of the melt channel into the housing. This prevents melt from penetrating radially into the seam between the housing cover and the top of the distributor element.
  • the upward pressure force, which supports the sealing effect can be greater than the pressure force acting in the melt flow direction. As a result, the seal is always guaranteed.
  • the distributor element is designed as a piston guided in a cylindrical cavity.
  • the cylindrical extension of the nozzle holder on the one hand and / or the cylindrical part of the housing on the other hand are adapted to the cylindrical shape of the piston over their entire axial length. Rather, there may be cutouts.
  • the housing 1 of the spinning head has a cylindrical recess 2. In this recess, a thread 23 is introduced over part of the length.
  • the mouth 6 of the melt line is surrounded by a seal 7.
  • the nozzle holder 8 is from below in the thread 23 of the Screwed in housing 1.
  • the nozzle holder 8 is a cylindrical ring 9 with an external thread, on which a support ring 10 for the nozzle plate 11 is integrally formed.
  • the inner diameter 12 of the nozzle holder 8 is equal to the inner diameter 13 of the cylindrical interior of the housing 1.
  • the nozzle package of the spinning head consists of the aforementioned nozzle plate 11 and the distributor element 14.
  • the distributor element 14 is designed as a cylindrical piston, which in the cylindrical Interior with the inner diameter 12 of the cylinder piece 9 and with the inner diameter 13 of the housing 1 is fitted and can slide therein.
  • a recess 17 is made in the underside 16 of the distributor element 14. This has a circular cylindrical shape. It is designed in cross section so that its depth increases from the center to the outside. With this design, the flow conditions in the resulting distributor space 17 between the distributor element 14 and the nozzle plate 11 are influenced.
  • the distribution space 17 is sealed by seal 15.
  • the seal 15 is designed as a self-seal. Under the pressure that prevails in the distributor space 17, the seal, which is designed as an angular profile, lies against the sealing surfaces and squeezes in the gap between the underside 16 of the distributor element 14 and the nozzle plate 11.
  • the distributor element 14 and the nozzle plate 11 are dimensioned and the nozzle holder 8 is screwed so far into the housing 1 that the nozzle plate bears sealingly on the seal 15 or the underside 16 of the distributor element and the distributor element on the seals 7.
  • the cross section of the cavity 17 is very large compared to the area of the mouth 6 of the melt line 4 in the cover 5 of the distributor element. Therefore, the distributor element is pressed in a self-sealing manner against the seals 7 which surround the openings.
  • FIGS. 4 and 5 Suitable seals are shown in FIGS. 4 and 5.
  • the interface between the housing 1 of the spinning head and the distributor element 14 is wedge-shaped.
  • a correspondingly designed sealing ring 7 is inserted in this part.
  • the sealing ring 7 is pressed into the wedge gap. The sealing effect of the ring is therefore supported and increased by the melt pressure and depending on this.
  • the distribution space 17 is connected to the mouth 6 of the melt line 4 by a number of cylindrical filter chambers 18 and channels 19.
  • filter candles 19 are inserted into the filter chambers 18.
  • each filter candle 20 is fastened on a base 22 which is screwed into the filter chamber 18.
  • Each filter candle 20 and base 22 is penetrated by an axial channel 21 which is closed at the upper end.
  • the melt entering through the channel 19 into the filter chamber 18 penetrates the filter candle 20 radially from the outside inwards and passes through the axial channel 21 into the distribution space 17 and from there to the nozzle holes of the nozzle plate 11.
  • Filter candle 20 is conical on its outer circumference, so that a cavity filled with melt is formed in the filter chamber 18.
  • the spinning head according to this invention is therefore particularly suitable for high pressures of e.g. B. 1000 bar, because only a load on the spinning head in the region of the relatively small mouth 6 of the melt line 4 occurs due to the melt pressure.
  • the large number of filter chambers 18 arranged in the distributor element 14 allows a large filter area, but on the other hand this arrangement also prevents the high pressure forces applied to the filters from having to be absorbed by the spinning head. Rather, the solidly designed distributor element 14 is used for this purpose.
  • the pressure prevailing in the distributor chamber 17 has already been substantially reduced by the throttling in the area of the filter.
  • the spinning head with housing 1 and nozzle holder 8 and thread 3 only has to endure the pressure forces created by this reduced pressure.
  • the upper part 3 of the spinning head is solid.
  • the upper part 3 has a recess on its underside, which forms a cavity, distributor space 17 with the nozzle plate 11.
  • the upper part has an external thread 23.
  • the nozzle holder 8 is screwed onto this.
  • the nozzle plate is pressed firmly against the upper part 3 by means of the holding ring 10 of the nozzle holder.
  • the gap between the nozzle plate 11 and the upper part 3 in the region of the distributor space 17 is also sealed here by a seal 15 which is angular in profile and is therefore self-sealing.
  • filter chambers 18 are created.
  • the filter chambers are hollow cylindrical. They have a thread on their underside, with which they open into the distribution space 17. Filter candles 20 can be screwed into this thread.
  • the filter candles 20 have an inner channel 21, which is closed at the top and which opens out into the distributor space 17 at the bottom.
  • the filter candles, which are weakly conical, are washed around by melt and flowed through from the inside to the outside.
  • the filter chambers are arranged with their axes on the surface lines of a cone, the tip of which lies in the center of the melt channel 4.
  • the melt channel bends in a direction perpendicular to the spinning direction.
  • the pressure forces exerted by the melt act in the mouth region 24.
  • the mouth surface can be made relatively small.
  • the pressure forces in the area of this mouth can easily be absorbed by screwing the supply line to the upper part.
  • the filter chambers 18 are perpendicular to the nozzle plate 11 with their axes.
  • the filter chambers 18 are connected to the melt line 4 by bores 19 which are introduced into the upper part 3 from one side and are closed there by a stopper 25 :
  • the high melt pressure of z. B. 1000 bar inside the spinning head since the component 3 is of correspondingly solid construction and since, apart from the mouth 24 of the melt line 4, no external pressure forces arise. These pressure forces at the mouth 24 can in turn be easily absorbed by screwing the melt line.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)

Claims (12)

1. Tête de filage pour filage à chaud de fibres synthétiques, formant entre le filtre à matière en fusion (20) et la plaque-filière (11), une cavité (17) recouvrant la surface de la plaque-filière (11) caractérisée par le fait que les filtres (20) sont agencés dans une pluralité de chambres de filtrage individuelles (18) qui partent de la surface de section droite de la conduite de matière en fusion (4) débouchant dans le carter (1) et débouchent individuellement vers le bas, dans la cavité (7) au-dessus de la surface de la plaque-filière (11), en étant de préférence réparties symétriquement.
2. Tête de filage selon revendication 1, caractérisée par le fait que la tête de filage est constituée par un carter (1) et par un élément répartiteur (14) qui y est mobile dans la direction du courant de matière en fusion, que l'embouchure (6) de la conduite de matière en fusion (4) dans le couvercle (5) du carter se trouve sensiblement en position médiane au-dessus des filières, que les chambres de filtrage (18) se trouvent dans l'élément répartiteur (14) et partent d'une surface de section droite correspondant sensiblement à l'embouchure (6) de la conduite de matière en fusion (4), et que l'embouchure (6) de la conduite de matière en fusion (4) est entourée étroitement par un joint d'étanchéité (7) contre lequel est appuyé de manière étanche le côté supérieur de l'élément répartiteur (14).
3. Tête de filage selon revendication 1 ou 2, caractérisée par le fait que les chambres de filtrage (18) sont aménagées symétriquement et que des bougies filtrantes (20) sont placées dans les chambres de filtrage (18).
4. Tête de filage selon l'une des revendications 2 ou 3, caractérisée par le fait que l'élément répartiteur (14) est serré par la monture de filière (8) entre la plaque-filière (11) et les joints d'étanchéité (7) entourant l'embouchure (6) de la conduite de matière en fusion.
5. Tête de filage selon l'une des revendications 2 à 4, caractérisée par le fait que l'élément répartiteur (14) est réalisé en tant que piston cylindrique guidé à coulissement dans le carter (1).
6. Tête de filage selon revendication 5, caractérisée par le fait que la monture de filière (8) possède un prolongement cylindrique (9) qui s'étend au-delà de la plaque-filière (11) et dont la périphérie intérieure sert au guidage de l'élément répartiteur (14).
7. Tête de filage selon revendication 6, caractérisée par le fait que le carter (1) et le prolongement cylindrique (9) de la monture de filière (8) possèdent la même section droite intérieure.
8. Tête de filage selon l'une des revendications 2 à 7 précédentes, caractérisée par le fait que la monture de filière (8) est fixée, par un filetage extérieur, dans un filetage intérieur du carter (1) la section droite intérieure du filetage étant plus grande que la section droite de la partie cylindrique du carter (1) servant à guider l'élément répartiteur (14).
9. Tête de filage selon l'une des revendications précédentes, caractérisée par le fait que les axes des chambres de filtrage cylindriques (18) partent d'un point situé dans la conduite (4) de matière en fusion, et les chambres de filtrage (18) se raccordent directement à la section droite de la conduite (4) de matière en fusion.
10. Tête de filage selon l'une des revendications 1 à 8, caractérisée par le fait que chaque chambre de filtrage (18) est hermétiquement fermée vers le haut et ne communique avec la conduite (4) de matière en fusion que par un trou à section droite plus petite.
11. Tête de filage selon revendication 10, caractérisée par le fait que les axes des chambres de filtrage cylindriques (8) sont perpendiculaires à la plaque-filière (11).
12. Tête de filage selon revendication 10, caractérisée par le fait que les axes des chambres de filtrage (18) sont inclinés par rapport à la plaque-filière (11) et se rencontrent de préférence en un point situé sur l'axe de la conduite (4) de matière en fusion.
EP85112709A 1984-10-16 1985-10-08 Filière Expired EP0178570B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE3437771 1984-10-16
DE3437771 1984-10-16
DE3441599 1984-11-14
DE3441599 1984-11-14

Publications (3)

Publication Number Publication Date
EP0178570A2 EP0178570A2 (fr) 1986-04-23
EP0178570A3 EP0178570A3 (en) 1987-09-02
EP0178570B1 true EP0178570B1 (fr) 1989-04-26

Family

ID=25825663

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85112709A Expired EP0178570B1 (fr) 1984-10-16 1985-10-08 Filière

Country Status (3)

Country Link
US (1) US4704077A (fr)
EP (1) EP0178570B1 (fr)
DE (1) DE3569757D1 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3642867A1 (de) * 1986-12-16 1988-06-30 Barmag Barmer Maschf Spinnanlage
US5051088A (en) * 1988-04-11 1991-09-24 Hoechst Celanese Corporation Melt spinning machines
DE4227114C2 (de) * 1991-09-14 2001-09-06 Barmag Barmer Maschf Spinnkopf
DE4343270A1 (de) * 1993-12-17 1995-06-22 Zimmer Ag Spinnkopf mit Filterkerze
DE19607103B4 (de) * 1996-02-24 2006-01-26 Zimmer Ag Spinnpack mit Sandfilter
DE10140581A1 (de) * 2001-08-18 2003-02-27 Neumag Gmbh & Co Kg Spinnvorrichtung
US11583109B2 (en) 2005-09-12 2023-02-21 Rtc Industries, Inc. Product management display system with trackless pusher mechanism
US10952546B2 (en) 2005-09-12 2021-03-23 Rtc Industries, Inc. Product management display system with trackless pusher mechanism

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3061874A (en) * 1960-11-23 1962-11-06 Du Pont Melt spinning apparatus
DE1660209A1 (de) * 1965-07-15 1970-02-05 Barmag Barmer Maschf Schmelzespinnkopf fuer das Spinnen unter hohem Druck
US3387327A (en) * 1966-06-09 1968-06-11 Monsanto Co Filament spinning apparatus
NL6616462A (fr) * 1966-11-23 1968-05-24
US3466703A (en) * 1967-08-11 1969-09-16 Du Pont Spinneret assembly
US3570059A (en) * 1969-07-24 1971-03-16 Lambert H Mott Spinnerette head filter
US3601846A (en) * 1970-01-26 1971-08-31 Eastman Kodak Co Spinneret assembly for multicomponent fibers
GB1296653A (fr) * 1971-01-29 1972-11-15
US3802821A (en) * 1973-02-12 1974-04-09 Mott Metallurg Corp Spinnerette head
US4038005A (en) * 1974-06-20 1977-07-26 Barmag Barmer Maschinenfabrik Nozzle plate holder
US3938925A (en) * 1974-09-11 1976-02-17 Allied Chemical Corporation Spin pack assembly
US4406850A (en) * 1981-09-24 1983-09-27 Hills Research & Development, Inc. Spin pack and method for producing conjugate fibers

Also Published As

Publication number Publication date
DE3569757D1 (en) 1989-06-01
US4704077A (en) 1987-11-03
EP0178570A2 (fr) 1986-04-23
EP0178570A3 (en) 1987-09-02

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