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EP1115922A1 - Preparation de fils - Google Patents

Preparation de fils

Info

Publication number
EP1115922A1
EP1115922A1 EP99940155A EP99940155A EP1115922A1 EP 1115922 A1 EP1115922 A1 EP 1115922A1 EP 99940155 A EP99940155 A EP 99940155A EP 99940155 A EP99940155 A EP 99940155A EP 1115922 A1 EP1115922 A1 EP 1115922A1
Authority
EP
European Patent Office
Prior art keywords
thread
collecting chamber
preparation
channel
preparation device
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.)
Withdrawn
Application number
EP99940155A
Other languages
German (de)
English (en)
Inventor
Ulrich Enders
Hans-Gerhard Hutter
Hansjörg MEISE
Roland Nitschke
Detlev Schulz
Peter Senge
Dieter Wiemer
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 EP1115922A1 publication Critical patent/EP1115922A1/fr
Withdrawn legal-status Critical Current

Links

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
    • D01D5/08—Melt spinning methods
    • D01D5/096—Humidity control, or oiling, of filaments, threads or the like, leaving the spinnerettes

Definitions

  • the invention relates to a device for melt spinning filaments into a thread according to the preamble of claim 1
  • a device and a method for melt spinning filaments into a thread are known.
  • filaments are extruded from a spinning head via a spinneret.
  • These filaments are conveyed from a receiving chamber into a cooling channel, on which a collection chamber follows, to which a vacuum device is connected, which generates a corresponding vacuum in the cooling channel, so that air is sucked into the receiving chamber connected to the spinneret and a flow of cooling air is generated on the surface of the filaments in the direction of travel, at the bottom of the collection chamber an outlet opening is provided through which the filament bundle forming the thread emerges.
  • the thread is prepared.
  • the preparation of the thread serves to improve its sliding properties ten to improve to avoid filament breaks, thread breaks, electrostatic charges and thus a reduced thread quality in the subsequent winding process or further processing
  • the thread is brought into contact in a preparation device with an agent containing at least 01 in order to improve its friction properties for the further processing process.
  • the preparation device is followed by a treatment zone in which, for example, two godets are arranged, the godet of which is arranged first in the thread running direction has a lower speed, while the second godet arranged downstream in the thread running direction has a correspondingly higher speed or speed.
  • the disadvantage of the known device described is that the unprepared thread can strike the relatively small outlet opening of the collecting chamber.
  • the fastening is supported, inter alia, by the fact that a secondary flow against the thread running direction occurs in the collecting chamber in this region or of filaments of the thread leads to thread damage, which has a disadvantageous effect on the quality of the thread.
  • a possible striking of the filaments of the thread is also favored by the fact that the thread as it exits the cooling channel and as it passes through the collecting chamber due to the prevailing flow conditions in the air outlet zone is made to vibrate
  • the invention is therefore based on the object of a device for
  • Damage to the unprepared thread is avoided in particular in the area of the outlet opening of the collecting chamber and by means of which a quiet one Thread run at exit from the cooling channel and pass through the collection chamber is reached
  • the filaments are discharged from a spinneret on a spinning head into a channel which flows into a collecting chamber a preparation device in which the application of a thread lubricant - for example an oil - improves its sliding friction properties and thus its tendency to break threads, and a treatment zone is fed to a take-up spool.
  • a thread lubricant - for example an oil - improves its sliding friction properties and thus its tendency to break threads
  • the preparation device is arranged in the thread running direction in front of or within the collecting chamber after the individual filaments in the area of the end of the cooling channel or the entry into the collection chamber have been brought together to form a thread, the unprepared thread is brought into contact in the preparation device with a means which, in particular, ndest contains components from 01, which makes the thread less sensitive to friction
  • this preparation device By arranging this preparation device in the air outlet zone of the cooling channel, the disadvantages of devices of the prior art are largely avoided, because by preparing the thread in the suction chamber even before it emerges into the ambient air, the filaments of the thread or of the thread at the edge of the outlet opening of the collecting chamber is substantially avoided. The thread can thus be guided very precisely through the outlet opening of the collecting chamber. In addition, the bundled prepared thread is less sensitive to turbulent flow effects in the immediate exit region of the thread from the collecting chamber
  • the preparation device is arranged directly in the outlet opening of the collecting chamber.
  • the main advantage An arrangement of the preparation device directly in the outlet opening of the collection chamber is that the preparation device serves as a sealing element in addition to its function to prepare the thread. With the arrangement of the preparation device directly at the outlet of the collection chamber, the outlet opening can be reduced, which also reduces the tendency that secondary air is sucked into the collecting chamber counter to the running direction of the thread emerging from the collecting chamber. The air entering the collecting chamber from the cooling duct is discharged by means of the vacuum device
  • the preparation device is arranged within an air-permeable sifting cylinder.
  • the sieve cylinder within the collection chamber causes the flow to be equalized when the cooling air is removed.Therefore, no significant flow effects occur for deflecting or stimulating the thread to this zone is therefore particularly preferably suitable for preparing the thread according to the invention
  • a further improvement in the stability of the thread flow within the air outlet zone is achieved by the advantageous embodiment of the device according to the invention, in which the preparation device is arranged within an outlet cone, through which the collecting chamber is connected to the cooling channel.
  • the thread is prepared before it enters the collecting chamber
  • the outlet cone is particularly advantageously designed in such a way that its flow cross-section increases in the thread running direction. This results in an expansion of the air conducted in the cooling channel, so that the air emerging from the cooling channel enters the collecting chamber at a lower flow rate
  • the preparation device is preferably designed as a preparation pin
  • the preparation pin has a thread guide groove guiding the thread.
  • a channel opens into the guide groove, which channel is connected to a metering device and through which the thread lubricant exits in the guide groove
  • the preparation pin is advantageously held in a cantilever manner in a wall of the collecting chamber or the outlet cone, so that a straight thread run can be carried out without substantial deflection
  • the preparation device has a preparation nozzle with a thread channel, which extends essentially in the thread running direction.
  • a channel ends in the thread channel, through which a thread lubricant is fed in order to improve its frictional properties fed that the thread entrains a quantity of thread lubricant required for thread preparation as it passes the outlet opening of the channel.
  • the thread it is also possible for the thread to sweep over a specially shaped surface to which the corresponding quantity of thread lubricant is supplied
  • the preparation device is advantageously displaceable in the thread running direction and / or transversely to the thread running direction or also removable from the collecting chamber, for example in order to insert the thread through the slot into the thread channel of the preparation nozzle and then again the preparation device either in the Push in the area of the opening or, if the preparation device is arranged inside the collecting chamber, to move it through the opening of the collecting chamber or a side wall of the collecting chamber
  • FIG. 1 shows a basic sectional view of a spinning station with a preparation device integrated in the collecting chamber according to a first exemplary embodiment of the invention
  • FIG. 2 shows a spinning station with a preparation device arranged at the outlet from the collecting chamber according to a second exemplary embodiment of the invention
  • Fig. 3 shows a section of a spinning station with another
  • Fig. 4 1 is a sectional view through a preparation device according to the invention.
  • 4 2 shows a sectional view according to a sectional plane A-A according to FIG. 3 1
  • FIG. 1 shows a basic sectional view of a spinning station, in which, according to the invention, the preparation device is arranged in the interior of the collecting chamber.
  • a spinning head 2 of the spinning station is provided with a spinneret (not designated).
  • a number of filaments are transferred from the spinning head 2 into a chamber via the spinneret extruded, which is surrounded by a gas-permeable wall 11, through which cooling air is sucked in.
  • the cooling air is symbolically represented in its direction of flow by the arrows indicated in FIG. 1.
  • the chamber with the gas-permeable wall 11 closes there is an inlet cone 12 in which the filaments 1 are converged in the direction of an adjoining cooling channel 4.
  • the cooling channel 4 flows through an outlet cone 13 into a collecting chamber 3.
  • the collecting chamber 3 has a sieve cylinder 14 in its interior 3, a vacuum device 7 is connected, by means of which the cooling air 10 is given a flow rate through the gas-permeable wall 11, through the inlet cone 12 and through the cooling channel 4 into the collecting chamber 3 via the outlet cone 13, which at least in the cooling channel 4 is essentially the filament running speed This ensures that the resistance between the running filaments and the cooling air 10 surrounding them is kept negligibly small
  • the individual filaments are converged such that their point of convergence is arranged above a preparation device 5 arranged in the interior of the collecting chamber 3.
  • the thread 6 constructed from the filaments 1 thus enters the preparation device 5
  • a thread lubricant is supplied to the thread at a constant running speed, which causes the sliding friction property of the thread to be improved and electrostatic charges to be suppressed. This prevents thread breaks, filament breaks or loops in the subsequent processing process of the thread. Furthermore, the preparation of the thread carries with the thread lubricant so that when the thread passes through the outlet opening 9 from the collecting chamber 3, striking the thread on the inner edge of the outlet opening is largely avoided.
  • the filaments adhering relatively to one another after leaving the preparation device 5 can also become turbulent due to flow turbulence In the immediate area of the outlet opening 9 of the collecting chamber 3, no longer put it down from the longitudinal axis of the thread fed to the preparation device
  • the dosing device is preferred arranged outside the collecting chamber 3 and connected to the preparation device via a line.
  • the thread After leaving the suction chamber 3, the thread passes through a treatment zone 16, in which, for example, a heat treatment, a relaxation or also a swirl nozzle 17 can be arranged to achieve the thread closure.
  • the treatment zone 16 is followed by the winding device, which consists of a traversing device forming a traversing triangle 18 , a pressure roller 19 and a coil 8
  • FIG. 2 shows a spinning station with a preparation device 5 arranged in the exit region of the thread from the collecting chamber in accordance with a second exemplary embodiment of the invention.
  • the basic structure and function of the spinning station corresponds to that which has already been described in detail in connection with FIG. 1.
  • An essential difference compared to the exemplary embodiment described in FIG. 1 is that the preparation device, which corresponds in its function to that described in connection with FIG. 1, is arranged in the immediate outlet area, ie in the outlet opening 9 (see FIG. 1) of the collecting chamber 3 .
  • An essential advantage of such an arrangement is that the preparation device itself acts as a kind of seal, which prevents or limits that large quantities of secondary air flow into the collecting chamber 3 against the thread running direction by sucking the cooling air 10 by means of the vacuum device 7 is thus contributed at least to a reduction in the turbulent flow conditions in the immediate exit region of the thread from the collecting chamber 3.
  • the thread 6 then passes from the preparation device 5 into the treatment zone 16.
  • a first godet 15 and a second godet 20 are arranged in the treatment zone 16.
  • the first godet 15 has a suitable low speed or working speed.
  • the second godet 20, on the other hand has a correspondingly higher working speed.
  • the thread quality is determined by the ratio of the speeds or working speeds of the two godets 15, 20 to one another. litat thereby significantly influenced or set as desired by adjusting the speed of the second godet 20 so that a defined stretching ratio is achieved.
  • the two godets are followed by a swirl nozzle 17
  • the thread 6 From the treatment zone 16, the thread 6 finally arrives at a winding point, which is provided by means of a traversing device producing a traversing triangle 18, a pressure roller 19 and a bobbin 8.
  • a section of a device according to the invention is shown schematically.
  • the spinning device differs from the spinning devices described in FIGS. 1 and 2 only in the arrangement and design of the preparation device. In this case, only the relevant section of the spinning device was shown in FIG. 3 Thread guidance before and after the cutout is designed, for example, as in FIG. 1 or as shown in FIG. 2. In this regard, reference is made to the preceding description
  • FIG. 3 shows the end of the cooling channel which is formed by the outlet cone 13.
  • the outlet cone 13 is connected to the collecting chamber 3, the collecting chamber 3 having an inlet opening which essentially corresponds to the flow cross section at the outlet of the cone 13.
  • Inside the collecting chamber 3 an air-permeable sieve cylinder 14, which surrounds the thread 6, is introduced, which essentially has the flow cross-section of the inlet opening.
  • An opening for discharging the cooling air is formed on the side of the collecting chamber 3.
  • the vacuum device 7 is connected via a line
  • a preparation device 5 is arranged within the outlet cone 13.
  • the preparation device 5 is designed here as a preparation pin 30.
  • the preparation pin 30 has a guide groove 31 at the end protruding into the interior of the cooling shaft, in which the thread 6 A channel 22 of the preparation pin 30 flows into the guide groove 31.
  • the channel 22 is connected to a metering device 23 via an elastic line 32.
  • the metering device 23 is in turn connected to a thread lubrication container 24
  • the preparation pin 30 is arranged in the wall of the outlet cone 13.
  • the outlet cone 13 has a receptacle which enables the preparation pin 30 to be displaced transversely to the thread running direction without secondary air being able to enter the cooling shaft from the outside To facilitate threading
  • a thread lubricant for example an oil / water emulsion
  • the metering device 23 is fed in a metered form to the preparation pin 30.
  • the thread lubricant passes through the channel 22 into the guide groove 31 of the preparation pin 30 The thread lubricant is absorbed by the thread in the groove
  • the pen preparation shown as an example can also be used very well in the exemplary embodiment of the invention from FIG. 1
  • FIG. 4 a further exemplary embodiment of a preparation device 5 is shown in a basic sectional view in the direction of the thread running direction.
  • the preparation device 5 is designed as a preparation nozzle 26 for preparing the thread.
  • the thread 6, which is combined from the individual filaments 1, runs through a thread channel 21 of the preparation nozzle 26
  • a channel 22 opens into the thread channel 21, via which a thread lubricant by means of a suitable Metering device 23 is fed from a thread lubricant container 24
  • the dimension of the channel 22 or the setting of the metering device 23 are dimensioned such that the amount of thread lubricant required for a defined thread running speed for the preparation of the thread is supplied
  • the preparation nozzle 26 has a slot 25 which extends in the thread running direction and extends from the outside of the preparation nozzle 26 to the thread channel 21
  • FIG. 4 2 shows a sectional view through the sectional plane A-A according to FIG. 4 1. It can be seen that the slot 25 extends from the side of the preparation nozzle 26 to the thread channel 21.
  • the channel 22 is also indicated by a dashed line
  • the invention is not restricted to a specific shape of the cow device shown in FIGS. 1 and 2.
  • the cooling channel is preferably formed by a tube in which a bundle of filaments is guided.
  • the elements connected to the cooling channel are preferably cylindrical.
  • these embodiments are exemplary and can easily be replaced by oval shapes or, in the case of rectangular spinnerets, even by square shapes.
  • the spinning device according to the invention is suitable for producing textile thread or technical thread made of polyester, polyamide or polypropyline.
  • Various treatment devices for the thread can be connected downstream, for example a fully stretched thread (FDY), a pre-oriented thread (POY) or a highly oriented thread (HOY)

Landscapes

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

Abstract

L'invention concerne un dispositif permettant de filer par fusion des filaments de façon à obtenir un fil constitué notamment de polyester, de polyamide, de polypropylène, etc. Le dispositif comprend une filière disposée sur une tête (2) de filière. Les filaments sortant de ladite filière traversent un canal de refroidissement (4) et arrivent dans une chambre de collecte (3). Le fil constitué par la réunion des filaments passe dans un dispositif de préparation (5), où ses propriétés de glissement sont améliorées. Depuis le dispositif de préparation (5), le fil est amené à une zone de traitement (16), puis à une bobine d'enroulement (8). Selon l'invention, le dispositif de préparation (5) est disposé, dans le sens de transport du fil, avant ou dans la chambre de collecte (3).
EP99940155A 1998-08-07 1999-08-05 Preparation de fils Withdrawn EP1115922A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19835930 1998-08-07
DE19835930 1998-08-07
PCT/EP1999/005675 WO2000008242A1 (fr) 1998-08-07 1999-08-05 Preparation de fils

Publications (1)

Publication Number Publication Date
EP1115922A1 true EP1115922A1 (fr) 2001-07-18

Family

ID=7876897

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99940155A Withdrawn EP1115922A1 (fr) 1998-08-07 1999-08-05 Preparation de fils

Country Status (2)

Country Link
EP (1) EP1115922A1 (fr)
WO (1) WO2000008242A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102926003A (zh) * 2011-08-11 2013-02-13 苏州一丞咨询服务有限公司 一种用于细旦纺丝的上油方法

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4247505A (en) * 1978-05-05 1981-01-27 Phillips Petroleum Company Melt spinning of polymers
JPS60134011A (ja) * 1983-12-22 1985-07-17 Toray Ind Inc 熱可塑性重合体の溶融紡糸方法および装置
JPH0651924B2 (ja) * 1985-07-08 1994-07-06 東レ株式会社 紡糸装置
TW268054B (fr) * 1993-12-03 1996-01-11 Rieter Automatik Gmbh

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO0008242A1 *

Also Published As

Publication number Publication date
WO2000008242A1 (fr) 2000-02-17

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