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EP1431433A1 - Structure d'un dispositif d'étirage - Google Patents

Structure d'un dispositif d'étirage Download PDF

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Publication number
EP1431433A1
EP1431433A1 EP03078239A EP03078239A EP1431433A1 EP 1431433 A1 EP1431433 A1 EP 1431433A1 EP 03078239 A EP03078239 A EP 03078239A EP 03078239 A EP03078239 A EP 03078239A EP 1431433 A1 EP1431433 A1 EP 1431433A1
Authority
EP
European Patent Office
Prior art keywords
rollers
roller
pair
drafting
drafting system
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Withdrawn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
EP03078239A
Other languages
German (de)
English (en)
Inventor
Olivier Wuest
Herbert Stalder
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.)
Filing date
Publication date
Application filed by Maschinenfabrik Rieter AG filed Critical Maschinenfabrik Rieter AG
Publication of EP1431433A1 publication Critical patent/EP1431433A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H5/00—Drafting machines or arrangements ; Threading of roving into drafting machine
    • D01H5/18—Drafting machines or arrangements without fallers or like pinned bars
    • D01H5/46—Loading arrangements
    • D01H5/50—Loading arrangements using springs
    • D01H5/505—Loading arrangements using springs for top roller arms
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H5/00—Drafting machines or arrangements ; Threading of roving into drafting machine
    • D01H5/18—Drafting machines or arrangements without fallers or like pinned bars
    • D01H5/56—Supports for drafting elements
    • D01H5/565—Top roller arms

Definitions

  • the present invention relates to a drafting system for spinning machines according to the Preamble of independent claim 1 and a spinning machine with a such drafting system according to the preamble of claim 8.
  • a device shows, for example the German document DE 30 25 032 A1.
  • the Upper rollers can be lifted together using an upper roller support arm. Taking off the Upper of the lower rollers is necessary in order to get the fiber structure to be drawn position correctly between the rollers of a pair of rollers. Every roller has its own bearing, with the top roller bearing on an top roller arm is attached.
  • Most drafting systems have three pairs of rollers. Are less common Draw frames with four or more pairs of rollers.
  • a drafting system can also be used there are two pairs of rollers.
  • the roller pairs of the drafting system can be divided into pairs of infeed rollers, Divide the pairs of center cylinders and pairs of outlet rollers. The default in a drafting system takes place gradually. If there are only two pairs of rollers, see above the delay is one stage. If there are three pairs of rollers - which is the rule - this is the case the delay in two stages. With four pairs of rollers, the draft can be three-stage. In one Three-cylinder drafting system - i.e.
  • the fibers are only around moved a small amount.
  • the advance delay is less than 1.5 times
  • sliver or stretch belts i.e. on of the route
  • the advance delay is more than 1.5 times.
  • the straps have central cylinders. These ensure for the high Main warp good fiber guidance.
  • the drafting systems according to the prior art have disadvantages. Depending on the purpose of the drafting system is the ability to lift the top rollers from the bottom rollers not appropriate according to the devices of the prior art or cumbersome.
  • the devices according to the prior art are in particular disadvantageous where a yarn or a yarn end at least through the nip of the outlet roller pair must be guided (necessary for the production of Core yarns or for certain preparation processes, e.g. for air spinning): if production is interrupted, e.g. if the yarn breaks, the yarn end must go back into the drafting system be returned.
  • the use of conventional drafting systems has proven to be proved disadvantageous because this for inserting the yarn end into the drafting system must be opened, whereby all top rollers are lifted off.
  • the present invention is therefore based on the object of withdrawing the Improve top rollers or make them more appropriate and the described Eliminate disadvantage.
  • the device according to the invention it is possible to avoid the disadvantages mentioned above and only to open the area of the drafting system which is really necessary for the return of the yarn end or the core yarn. If several pairs of rollers are present in the device after the main draft, it can be advantageous to design either all the top rollers after the main draft or, if need be, only the top roller of the outlet roller pair to be liftable. It depends on how many pairs of rollers you want to return the end of the thread whether all the top rollers should be designed to be liftable after the main draft or only the top roller of the last outlet roller pair (viewed in the direction of fiber feed).
  • top rollers Due to the independent lifting of certain top rollers, the remaining pairs of rollers remain closed and, consequently, the fiber structure in the pre-drafting is clamped and unchanged for the following process. This avoids the disadvantage of the prior art.
  • one or more of the top rollers in the pre-drafting area for example the top roller of the pair of infeed rollers, are designed so that they can be lifted off independently. Analog advantages also arise here: Only the clamping line or those clamping lines at which something has to be changed are exposed, while the fibers or the thread is held in the optimal position in the remaining pairs of rollers.
  • a drafting system according to the invention is particularly suitable for production of core yarns in ring spinning or air spinning machines.
  • an elastic core yarn is used, around which the stretched The fibers of the drafting device are twisted. It is advantageous if the core yarn is in front of the pair of outlet rollers is fed.
  • For the preparation process in air spinning machines plays the thread return into the drafting system plays a role (that is, for attaching new thread at one end of the thread).
  • FIG. 1 shows a first embodiment of the invention. It provides a drafting system 1 for spinning machines with a pair of inlet rollers 2, including the lower roller 6 and the top roller 4, a pair of central cylinders 12 with the top roller 17 and the bottom roller 18, and a pair of outlet rollers 3 with the lower roller 7 and upper roller 5. All of the upper rollers 4, 17 and 5 mentioned are of their opposite lower rollers 6, 7 and 18 can be lifted off.
  • the top rollers 4, 17 and 5 are each individual and each with individually adjustable load means 8 (shown schematically in the figure) loaded. 8 springs, in particular spiral springs, are preferred as load means, used.
  • the load means act the loading arms 19 and 20 exert pressure on the top rollers and thus on the clamping line of the respective pair of rollers.
  • the device according to the invention has an upper roller load that can be lifted off a construction in which at least one top roller independently of the remaining top rollers can be lifted.
  • Fig. 1 is the top roller 5 of the outlet roller pair 3 via the independent top roller loading arm 20 separately and independently of the remaining top rollers of drafting system 4 and 17 lifted.
  • 1 shows a typical three-cylinder drafting system. The invention leaves but also apply to drafting systems that only have two, four or more pairs of rollers exhibit.
  • the drafting systems preferably have the devices mentioned also straps on. In FIG. 1, this is due to the dash-dotted straps 13 shown.
  • the use of straps is not essential to the invention.
  • straps are used in drafting systems.
  • the drafting system respectively whose top roller loading arms 19 and 20 is over the closures 21 locked.
  • FIG. 2 shows a four-cylinder drafting system, which also according to the invention Is provided.
  • the elements and the reference numbers correspond to those of 1, which is why here only the differences to the elements in FIG. 1 is received.
  • the top roller 5 of the pair of outlet rollers 3 is independent can be lifted off the remaining top rollers 4 and 17 thanks to the independent Oberwaizenbeiastuhgsarm 20.
  • this drafting device second pair of center cylinders 16.
  • the first pair of central cylinders 15 has an apron 13 equipped.
  • a compacting unit can be opened 14 are located (shown in dashed lines).
  • the compacting unit 14 can, for example be designed for the production of compact yarn.
  • the presence such a unit 14 is optional and insignificant for the implementation of the invention.
  • the invention can, however, the presence of such devices 14 Make handling of the drafting system much easier.
  • other devices can be provided at this point, in which the separate and independent lifting of the top roller 5 also from Advantage is.
  • FIG. 3 also shows a four-cylinder drafting system as in FIG. 2, two here Top rollers can be lifted independently of the remaining top rollers.
  • This embodiment has an independent one Top roller loading arm 22 for two top rollers.
  • this embodiment can be advantageous.
  • the figure shows a drafting system in which the top roller 17 of the second pair of central cylinders 16 together with the top roller 5 of the outlet roller pair via an independent Upper roller load arm 22 can be lifted off. Also in this embodiment can be between the second pair of central cylinders 16 and the pair of outlet rollers 3rd a compacting unit 14 are located (optional).
  • All of the exemplary embodiments according to the invention have in common that one or several of the top rollers can be lifted independently of the other top rollers.
  • the term "removable" means that the corresponding pair of rollers of the drafting system can be opened by the top roller of the corresponding Roller pair is lifted from the lower roller of the cylinder pair.
  • the Top rollers attached to the top roller loading arm 19 are independent can be lifted off the remaining top rollers. That is, with the inventive
  • the upper roller loading arm 19 can also be raised without the device that the remaining rollers of the drafting system (on the upper roller load arm 20 or 22) can be opened.
  • the idea of the invention also includes the possibility that the upper roller loading arm 19 can only be opened if previously or at the same time the second upper roller loading arm 20 or 22 is opened.
  • top and bottom roller are (in particular in the claims) not limited to their spatial position to interpret their actual spatial arrangement is for the implementation of the Invention actually irrelevant.
  • a top roller is generally understood to be a pressure roller, while the bottom roller is usually a driven cylinder.
  • the loading means can 8 adjusted from the upper side of the upper roller loading arms 19, 20 and 22 become. With the adjustability of the load means 8, the force exerted on the pairs of rollers are adjusted (for example by above the load means 8 attached screws that can be tightened).
  • Figure 4 shows an element 9 which the top rollers 4 and 5, respectively the roller pairs 2, 12 and 3, jointly loaded and unloaded.
  • the figure mentioned shows as concrete Embodiment a common lever 9, which for the common loading and Relief of the existing roller pairs acts.
  • the lever 9 is on one side pivoted (preferably on the same pivot axis 23 as the upper roller load arm 19) and attached to a pressure medium 10 on the other side.
  • the pressure medium 10 is preferably a pneumatic or hydraulic pressure cylinder, which exerts pressure on the lever 9.
  • the pressure medium 10 exercises the Lever 9, the closures 21 and the upper roller loading arms 19 and 20 a common Load on the top rollers or on the roller pairs.
  • the load means 8 more or less tense, that is, depending on the position of the lever 9, the top rollers become more or less burdened or relieved. Since the lever 9 is mounted in the bearing axis 23 and itself turns around this point, the top rollers of the pair of inlet rollers 2 of the Middle cylinder pair 12 or the outlet roller pair 3 beoder different relieved. If the lever 9 is moved a little, the outlet roller pair 3 experiences the biggest change in its load, whereas the inlet roller pair 2 the undergoes the slightest change. This property of the lever is particularly out the following Figure 5 can be seen.
  • FIG. 5 shows the lever 9 in the completely relieved position (see pressure medium 10 in an end position).
  • FIG. 5 shows very clearly how the loading means 8 experience a different relief. It can be seen how the load means 8 of the inlet roller pair 2 has the least relief ⁇ d1, how the load means 8 of the central cylinder pair 12 experiences a greater relief ⁇ d2 and how the deflection of the independent upper roller load arm 20 is even such that the load means 8 of the outlet roller pair 3 is not only is completely relieved, but that the top roller 5 is even lifted from the bottom roller 7 of the outlet roller pair 3.
  • FIG. 1 shows the lever 9 in the completely relieved position (see pressure medium 10 in an end position).
  • FIG. 5 shows very clearly how the loading means 8 experience a different relief. It can be seen how the load means 8 of the inlet roller pair 2 has the least relief ⁇ d1, how the load means 8 of the central cylinder pair 12 experiences a greater relief ⁇ d2 and how the deflection of the independent upper roller load arm 20 is even such that
  • the top roller 5 of the outlet roller pair 3 even lifts off from the opposite bottom roller 7, during which the rollers of the inlet roller pair 2 and the center cylinder pair 12 remain pressed against one another with reduced force.
  • This embodiment has the advantage that when the machine is switched off or the drafting system is switched off, the pressure rollers only remain pressed against one another with reduced force. This enables the fiber structure to remain fixed in the inlet area (that is, between the pair of inlet rollers 2 and the pair of central cylinders 12), but at the same time the rollers are not loaded in such a way that they subsequently show pressure points or deformations.
  • the dimension of the lever and the attachment points of the closures 21 can be selected such that the top roller of the pair of outlet rollers 5 does not lift off if this is unfavorable for the corresponding application of the drafting system.
  • the invention also includes a method and a corresponding device which occurs when the spinning is interrupted or the stretching process is interrupted (e.g. when the thread breaks or other machine downtime) the drafting system is shut down, whereby at Standstill the top rollers together, preferably via the lever 9, relieved or be partially relieved.
  • the drafting systems according to the invention are particularly preferred in spinning machines such as air spinning machines and ring spinning machines.
  • the inventive The device is particularly suitable for air spinning machines, in which after the drafting device, a spinneret unit is arranged, which is a yarn after an air spinning process.
  • the invention cannot be applied only to conventional ones Use drafting systems, but in addition to the spinning machines mentioned also on spinning machines which process a yarn using the funnel spinning process or Manufacture according to the Plyfil spinning process or with spinning machines which use a real wire process use with closed end.
  • the invention is also suitable for spinning machines in which several fiber streams are spun.
  • FIG. 6 shows a further development of the invention in which in the drafting system 1 (only the pair of outlet rollers with the top roller 5 and the bottom roller 7 is shown) a spinneret unit 11 is arranged downstream.
  • a spinneret unit 11 is arranged downstream.
  • at lifted top roller load arm 20, or lifted top roller 5 swing the spinneret unit 11 out of the operating position.
  • It can a device can also be provided (not shown) which, when swung out the upper roller 5 or when pivoting the independent upper roller loading arm 20, the pivoting of the spinneret unit from the operating position causes.
  • the operating position of the spinneret unit 11 is dash-dotted in the figure shown.
  • the drafting system according to the invention and its further developments such as the lever and the swiveling device can be used in various textile machines Find.
  • the lever can also be independent of the device according to the invention be used for the independent lifting of certain top rollers.
  • the drafting system according to the invention, or the invention is therefore not based on the explicitly mentioned possibilities and embodiments are limited. These applications, or these variants are rather suggestions for the Specialist thought to implement the idea of the invention as cheaply as possible. Of the embodiments described are therefore easily other advantageous applications and combinations can be derived, which also reflect the inventive concept and should be protected by this registration.
  • Some of the features disclosed have been described in combination in this specification and are described in the following Claims combined. But it is also conceivable, individual Features from this description alone (e.g. lever 9) or in one to claim another combination in application of the inventive concept. The The applicant therefore expressly reserves the right to use other combinations in To provide application of the inventive concept.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
EP03078239A 2002-12-20 2003-10-14 Structure d'un dispositif d'étirage Withdrawn EP1431433A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH21952002 2002-12-20
CH21952002 2002-12-20

Publications (1)

Publication Number Publication Date
EP1431433A1 true EP1431433A1 (fr) 2004-06-23

Family

ID=32331843

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03078239A Withdrawn EP1431433A1 (fr) 2002-12-20 2003-10-14 Structure d'un dispositif d'étirage

Country Status (3)

Country Link
EP (1) EP1431433A1 (fr)
JP (1) JP2004204423A (fr)
CN (1) CN1510184A (fr)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007025535A3 (fr) * 2005-08-30 2007-08-23 Reinhard Koenig Banc d'etirage destine au traitement de materiaux fibreux
DE102007053712A1 (de) * 2007-11-10 2009-05-14 Oerlikon Accotex Texparts Gmbh Oberwalzen-Trag- und Belastungsarm
WO2013041220A1 (fr) * 2011-09-21 2013-03-28 Koenig Reinhard Banc d'étirage plieur pour un métier circulaire
CN105671700A (zh) * 2016-03-13 2016-06-15 福建华源科创发展有限公司 一种针织机用的牵伸装置
CN108035015A (zh) * 2016-11-15 2018-05-15 江苏普美纺织有限公司 一种原料选取装置
EP3421650A1 (fr) * 2017-06-28 2019-01-02 Murata Machinery, Ltd. Métier à filer à jet d'air
DE102021120226A1 (de) 2021-08-04 2023-02-09 Maschinenfabrik Rieter Ag Streckwerk und Verfahren zum Belasten und Öffnen des Streckwerks
EP4177387A1 (fr) 2021-11-09 2023-05-10 Saurer Intelligent Technology AG Banc d'étirage pour une machine textile
LU502705B1 (de) * 2022-08-25 2024-02-26 Saurer Intelligent Technology AG Luftspinnmaschine sowie Streckwerkeinheit für eine Spinnstelle einer Luftspinnmaschine

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018005998A1 (de) * 2018-07-31 2020-02-06 Saurer Spinning Solutions Gmbh & Co. Kg Tragrahmen für eine Streckwerkeinheit und Streckwerk umfassend eine solche Streckwerteinheit

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1070135A (fr) * 1952-02-29 1954-07-19 Ver Kugellagerfabriken Ag étireuse
CH375638A (de) * 1959-09-11 1964-02-29 Rieter Ag Maschf Führungs- und Belastungsarm am Streckwerk einer Spinnereimaschine
EP0359914A1 (fr) * 1988-09-21 1990-03-28 Trützschler GmbH & Co. KG Dispositif d'étirage pour des métiers à filer

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1070135A (fr) * 1952-02-29 1954-07-19 Ver Kugellagerfabriken Ag étireuse
CH375638A (de) * 1959-09-11 1964-02-29 Rieter Ag Maschf Führungs- und Belastungsarm am Streckwerk einer Spinnereimaschine
EP0359914A1 (fr) * 1988-09-21 1990-03-28 Trützschler GmbH & Co. KG Dispositif d'étirage pour des métiers à filer

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007025535A3 (fr) * 2005-08-30 2007-08-23 Reinhard Koenig Banc d'etirage destine au traitement de materiaux fibreux
DE102007053712A1 (de) * 2007-11-10 2009-05-14 Oerlikon Accotex Texparts Gmbh Oberwalzen-Trag- und Belastungsarm
EP2058421A3 (fr) * 2007-11-10 2011-05-11 Oerlikon Textile Components GmbH Bras de support et de pression pour cylindres supérieurs
WO2013041220A1 (fr) * 2011-09-21 2013-03-28 Koenig Reinhard Banc d'étirage plieur pour un métier circulaire
CN103917707A (zh) * 2011-09-21 2014-07-09 莱因哈特·科尼格 用于纺纱编织设备的折叠拉伸单元
TWI510686B (zh) * 2011-09-21 2015-12-01 Reinhard Koenig 用於一紡紗編織裝置的摺疊拉伸單元
CN103917707B (zh) * 2011-09-21 2016-02-17 莱因哈特·科尼格 用于纺纱编织设备的折叠拉伸单元
US9328438B2 (en) 2011-09-21 2016-05-03 Reinhard König Folding drawing system for a spin-knit machine
CN105671700A (zh) * 2016-03-13 2016-06-15 福建华源科创发展有限公司 一种针织机用的牵伸装置
CN108035015A (zh) * 2016-11-15 2018-05-15 江苏普美纺织有限公司 一种原料选取装置
CN108035015B (zh) * 2016-11-15 2023-07-21 江苏普美纺织有限公司 一种原料选取装置
EP3421650A1 (fr) * 2017-06-28 2019-01-02 Murata Machinery, Ltd. Métier à filer à jet d'air
DE102021120226A1 (de) 2021-08-04 2023-02-09 Maschinenfabrik Rieter Ag Streckwerk und Verfahren zum Belasten und Öffnen des Streckwerks
EP4177387A1 (fr) 2021-11-09 2023-05-10 Saurer Intelligent Technology AG Banc d'étirage pour une machine textile
LU502705B1 (de) * 2022-08-25 2024-02-26 Saurer Intelligent Technology AG Luftspinnmaschine sowie Streckwerkeinheit für eine Spinnstelle einer Luftspinnmaschine
EP4339341A1 (fr) * 2022-08-25 2024-03-20 Saurer Intelligent Technology AG Métier à filer à jet d'air et unité d'étirage pour un poste de filage d'un métier à filer à jet d'air

Also Published As

Publication number Publication date
CN1510184A (zh) 2004-07-07
JP2004204423A (ja) 2004-07-22

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