EP0806502A2 - Entonnoir de ruban de fibres - Google Patents

Entonnoir de ruban de fibres Download PDF

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Publication number
EP0806502A2
EP0806502A2 EP97104686A EP97104686A EP0806502A2 EP 0806502 A2 EP0806502 A2 EP 0806502A2 EP 97104686 A EP97104686 A EP 97104686A EP 97104686 A EP97104686 A EP 97104686A EP 0806502 A2 EP0806502 A2 EP 0806502A2
Authority
EP
European Patent Office
Prior art keywords
funnel
fleece
guide surface
baffle
height
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Withdrawn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
EP97104686A
Other languages
German (de)
English (en)
Other versions
EP0806502A3 (fr
Inventor
Alfred Nauthe
Wolfgang Göhler
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.)
Rieter Ingolstadt Spinnereimaschinenbau AG
Original Assignee
Rieter Ingolstadt Spinnereimaschinenbau 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 Rieter Ingolstadt Spinnereimaschinenbau AG filed Critical Rieter Ingolstadt Spinnereimaschinenbau AG
Publication of EP0806502A2 publication Critical patent/EP0806502A2/fr
Publication of EP0806502A3 publication Critical patent/EP0806502A3/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Withdrawn legal-status Critical Current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
    • D01H5/70—Constructional features of drafting elements
    • D01H5/72—Fibre-condensing guides

Definitions

  • the invention relates to a fleece funnel, which is arranged after the output rollers of a drafting system and at a distance from it, a long side of a funnel area being formed by a guide surface and the guide surface delimiting an impact surface, the impact surface being concavely curved and at the deepest point of the concave curvature a funnel mouth with a funnel channel is arranged and a ramp surface is arranged outside the funnel area.
  • the fleece funnel is also referred to as a fleece nozzle, only the fleece funnel is referred to below for reasons of uniform terminology.
  • One criterion for the economy of a draw frame is the delivery speed of the warped fiber sliver, as it is supplied by a pair of feed rollers at the exit of a drafting system. In the technical development of the route, increasing the delivery speed was a top priority.
  • a drafting system of a draw frame is usually presented with several fiber slivers, which are duplicated to form a fiber sliver. In the drafting system, the duplicated fiber sliver is warped.
  • the pair of delivery rollers is the output roller pair of a drafting system and supplies a spread fiber sliver.
  • the person skilled in the art refers to the spread fiber sliver as fiber fleece.
  • This fiber fleece is conveyed into the fleece funnel at the delivery speed.
  • the fiber fleece obtains the delivery speed from the peripheral speed of the pair of delivery rollers.
  • the fleece funnel must collect this fiber fleece, roll up the fiber fleece, remove the air from the fiber fleece and divert it into the funnel mouth and there introduce.
  • a compressed fiber sliver is created again.
  • the previous development to the fleece funnel shows different, constructive designs.
  • a solution to the fleece funnel according to DE-OS 26 23 400 from 1976 shows a constructive design as it was successfully used at delivery speeds of about 350 m / min. From today's perspective, this is a slow delivery speed with different technological requirements. At this slow delivery speed, the fiber fleece is still known to be folded over its width (corresponds to a wedge-shaped fold like an accordion).
  • the fleece funnel plays an essential role in achieving the desired delivery speed .
  • the fleece funnel must be able to roll this fiber fleece safely and without affecting the quality and transport it further as fiber sliver at the much higher speeds of the fiber fleece conveyed by the delivery rollers.
  • the automatic introduction of a spread fiber sliver (called fiber fleece), starting at the fleece funnel, must also be ensured.
  • the balloon becomes larger. This can change the shape of the balloon and can ultimately adversely affect its stability. Another difficulty arises. Due to the higher peripheral speed of the pair of output rollers, a stronger air flow is generated in the fixed spaces between the fleece funnel and the pair of output rollers. This affects the space between the lower delivery roller of the drafting system and the ramp surface of the fleece funnel. This stronger air flow has a detrimental effect. It affects the position of the balloon. Part of the balloon can be directed into the space between the fleece funnel and the deflection roller. Damage to the balloon or a fleece jam is possible.
  • the object of the invention is to provide a fleece funnel which ensures significantly higher delivery speeds than 950 m / min without affecting the quality of the sliver and without disturbances in the sliver transport and likewise enables the additional function of the automatic introduction of a sliver start.
  • This solution has the advantage that the fleece funnel works at delivery speeds of the fiber fleece of 1200 m / min and more without influencing the quality of the fiber sliver. It also works without disturbances in the sliver transport. With the fleece funnel according to the invention it is achieved that the formation of the balloon is not disturbed and the air to be removed can be better discharged. Another advantage is that the fiber fleece has an improved cleaning effect.
  • the guiding surface and impact surface of the fleece funnel form a right angle to one another.
  • the longitudinal axis of the funnel channel lies in an imaginary plane that is perpendicular to the impact surface and that is parallel to the guide surface.
  • the non-woven fabric also lying on one level, hits the impact surface.
  • An angle is included between the imaginary plane of the nonwoven fabric and the imaginary plane of the longitudinal axis, which is referred to as the impact angle ⁇ . It has been found that the impact angle ⁇ advantageously takes a value between 15 ° and 19 °. Ensuring this impact angle ⁇ optimizes the smooth rolling of the nonwoven.
  • a further embodiment of the invention is achieved in that the distance D 1 between the imaginary plane of the longitudinal axis of the funnel channel and the guide surface has a value in the range from 10 mm to 14 mm. It is achieved in that the balloon can form optimally.
  • the baffle surface is formed from surface sections.
  • a surface section of the baffle surface is arranged on both sides of the funnel opening, wherein it has an essentially linear contour.
  • the funnel mouth is arranged in this surface section.
  • the surface sections arranged on both sides of this surface section are curved and form a tangential connection.
  • the new contour of the impact surface is an advantageous embodiment and also improves the effect of the rolling in of the nonwoven by making the centering force for the nonwoven (especially for the edge areas of the nonwoven) greater.
  • a further advantageous embodiment consists in that the guide surface delimiting the funnel area is reduced to a lower height than the original height of the guide surface, at least in the area of the linearly guided surface section of the impact surface.
  • the height preferably in a central region of the width of the guide surface. This central area corresponds approximately to the width of the nonwoven fabric. This creates a recess on the upper edge or a lowering of the upper edge of the guide surface. The length of this recess corresponds approximately to the width of the nonwoven fabric.
  • the distance from the upper edge H 0 of the guide surface, ie the upper edge, which has not been lowered to a reduced height up to the upper roller (for example designed as a deflection roller) of the drafting system is essentially 0.5 up to 6.5 mm. It is thereby achieved that edge fibers spreading apart on the nonwoven are better integrated into the nonwoven.
  • the upper edge of the guide surface should also be at a distance of essentially 0.5 to 6.5 mm from the top roller.
  • FIG. 1 shows the arrangement of a fleece funnel 1 as used in the prior art, for example, on the RSB 951 line from Rieter Ingolstadt Spinnereimaschinenbau AG.
  • the fleece funnel 1 is arranged after the drafting device S.
  • a 3-over-3 drafting system is shown.
  • the pair of input rollers is formed by rollers 5, 5 '.
  • the middle roller pair is formed by the rollers 6, 6 'and the output roller pair is formed by the delivery rollers 7, 7'.
  • the sliver spread out after the pair of delivery rollers is conveyed into the fleece funnel as fiber fleece FV.
  • the fleece funnel 1 has a nozzle insert 2.
  • a belt guide tube 3 is arranged, which opens into a belt funnel 4.
  • the sliver funnel 4 compresses the sliver FB 'and deflects it into the clamping gap of the pair of calender disks 8, 9.
  • the calender disks 8, 9 convey the sliver FB''into a depositing device of the draw frame. This storage device is not shown.
  • the fleece funnel 1 shown in FIG. 1 the fiber fleece FV is securely gripped, folded and formed into a strand of fiber sliver FB '.
  • the fleece funnel used on the RSB 951 assumes this function safely for delivery speeds of the fiber fleece FV of 950 meters per minute.
  • the fiber fleece FV obtains this delivery speed through the output rollers which are formed by the delivery roller pair 7, 7 '.
  • FIG. 2 A further development is shown in FIG. 2.
  • the arrangement of a fleece funnel 100 is shown there, as is described in detail in European application 95114975.6.
  • This fleece funnel can also be used safely at delivery speeds of up to 950 m / min and also enables automatic insertion of the beginning of a fiber fleece.
  • a sliver FB is presented to the drafting system SW.
  • the sliver FB can be a single sliver or a single, doubled sliver.
  • This fiber sliver FB is drawn in by the input roller pair 50, 50 '.
  • the delivery roller pair 70, 70 'follows, the Delivery roller 70 and deflection roller 80 form the output roller pair.
  • the pair of output rollers could also be formed, for example, by a delivery roller 70 and its top roller 80.
  • FIG. 2 shows the fleece funnel in the operating position.
  • the fleece funnel 100 has a plug-in and fixable nozzle insert 101 with a funnel channel 104.
  • the funnel channel 104 has an articulated surface 105 at its mouth 202.
  • the band funnel insert 202 is received by a band funnel detection 201.
  • the band funnel holder 201 is in a holder 200.
  • the band funnel insert 202 has a cylindrical channel 203.
  • Injector bores 205, 206 which are connected to an external compressed air system (not shown), open into the cylindrical channel 203.
  • Guide tines are arranged on both sides of the mouth of the cylindrical channel 203, which adapt to the radius of the calender disks 90, 91 and lead to close to the nip, as a guide tine 207 shows.
  • FIG. 2 also shows that when the fleece funnel 100 is in the operating position, there is a narrow space with the distance A 0 between the fleece funnel 100 and the deflection roller 80.
  • an air flow LS (corresponding to the direction of the arrow) is guided in particular by the deflecting roller 80 through this intermediate space at a distance A 0 .
  • a suction flow AR acts in the indicated direction of the arrow.
  • the suction flow AR is generated by a suction system (not shown) below the drafting system SW.
  • An air flow is included in this suction flow AR, which is led through the space with the distance B 0 .
  • FIG. 3 shows further details of the fleece funnel 100 as used in the European application 95114975.6.
  • the fleece funnel 100 is formed with a substantially rectangular opening edge of the fleece funnel.
  • the long sides of the funnel area 103 are each by a guide surface 110 and a boundary surface 111 is formed.
  • An impact surface 109 is arranged in between.
  • the baffle surface 109 is concavely inclined, following a radius, the funnel opening being arranged in the deepest point of the curvature.
  • the funnel mouth forms a nozzle insert 101, which can be inserted and fixed in the fleece funnel 100 by means of locking means 108.
  • the nozzle insert 101 forms the funnel mouth on the impact surface, which is connected to a funnel channel 104.
  • the funnel duct 104 forms an articulated surface 105 in the vicinity of its duct mouth. Outside the funnel region 103, a ramp surface 102 is arranged in relation to the boundary surface 111.
  • the manual pivoting of the fleece funnel 100 is realized with the handle 106, which is also fixed with the locking means 108.
  • FIG. 4 shows the fleece funnel 100 without a handle 106 and without a pivot bearing in a spatial representation.
  • the reference numerals in FIG. 4 correspond to those in FIG. 3.
  • the fiber fleece hits the impact surface 109 with higher force at higher delivery speeds.
  • the fleece is deflected from the baffle 109 to the guide surface 110.
  • the fleece forms a balloon-like structure, called a balloon.
  • the balloon touches the guide surface 110, the balloon is rolled up and guided into the funnel channel 104.
  • the balloon becomes larger.
  • the air flow LS increases at distance A 0 as shown in FIG. 2.
  • the fleece balloon can be deflected into the intermediate space at a distance A 0 . This adversely affects the curling of the nonwoven fabric. In the worst case, the fiber fleece jams and the delivery of fiber fleece must be stopped.
  • FIG. 5 shows a fleece funnel 300 with features according to the invention.
  • the solution is characterized in that the impact surface 309 is widened so far in the direction of the ramp surface 302 that the contour of the impact surface forms a common intersection line SL with the contour of the ramp surface (FIGS. 5, 6). There is no boundary surface 111 as is still present in FIG. 3.
  • a contour is formed by an outline to a surface.
  • the air to be discharged can be integrated into the suction air flow AR (shown in FIG. 2) of the lower draft exhauster without overcoming an obstacle (original boundary surface) and thus without resistance.
  • the formation of the balloon is improved.
  • Suction of the balloon at the distance between the top roller and the guide surface is avoided.
  • Another effect of this measure has been an improved cleaning effect.
  • the impurities knocked out on impact of the nonwoven fabric dust, foreign particles
  • the guide surface 310 and the impact surface 309 of the fleece funnel form a right angle to one another.
  • the longitudinal axis LA of the funnel channel 304 lies in a plane which is perpendicular to the impact surface and which is parallel to the guide surface 310. This level is not shown, but can be reconstructed mentally using FIG. 9.
  • the fiber fleece FV also lying in one plane, strikes the impact surface 309. This level is not illustrated. But can also be reconstructed using FIG. 9.
  • An angle is included between the imaginary plane of the fiber fleece FV and the imaginary plane of the longitudinal axis LA, which is referred to as the impact angle ⁇ (see FIG. 9). It has been found that the impact angle ⁇ is advantageously between 15 ° and 19 °. Ensuring this impact angle ⁇ optimizes the smooth rolling of the nonwoven.
  • a further embodiment is achieved in that the distance D 1 between the imaginary plane of the longitudinal axis LA of the funnel channel 304 and the guide surface 310 is in a range from 10 mm to 14 mm. It is achieved in that the balloon can form optimally.
  • a further embodiment (FIG. 6) consists in that the baffle surface 309 consists of surface sections (F1, F2, F3).
  • a surface section F1 of the baffle surface 309 is formed, which is arranged on both sides of the funnel mouth and has an essentially linear contour.
  • the surface sections F2 and F3 are arranged on both sides of the surface section F1.
  • the surface sections F2, F3 have a smaller radius than the radius after the baffle surface 109 from FIG. 3 Area section F1.
  • the new contour of the baffle 309 enables offset detection of the beginning of the nonwoven fabric.
  • the nonwoven fabric lying in the surface section F1 is recorded earlier by a suction air flow from the funnel mouth with funnel channel 304 than that nonwoven fabric stored in the surface sections F2, F3.
  • a tip of nonwoven fabric is formed and captured independently. This favors the automatic insertion of a beginning of nonwoven.
  • No part of the total width of the nonwoven has to be presented to the nonwoven funnel.
  • the entire width of the nonwoven fabric can be presented to the nonwoven funnel. It is an improvement.
  • the centering force of the nonwoven fabric could be made larger, so that the effect of rolling the nonwoven fabric at high speeds could also be optimized.
  • the guide surface 310 delimiting the funnel region 303 is at least partially reduced with respect to the impact surface to a height H 1 compared to the original height H 0 of the guide surface.
  • a reduction in the original height of the guide surface takes place at least in the area of the linearly guided surface section F1 of the impact surface 309.
  • the guide surface is reduced to the height H 1 in a central region MA of its width B (FIG. 8a).
  • the central area MA corresponds approximately to the width of the fiber fleece presented.
  • the height H 1 is reduced by at least 1 mm compared to the original height H 0 .
  • the upper edge of the guide surface 309 is arranged in the region of the remaining, original height H 0 at a distance A 1 from the upper roller 80 (FIGS. 7 and 9), the distance A 1 having a value in the range of 0.5 mm up to 6.5 mm.
  • the invention also has the advantage that the automatic introduction of a nonwoven fabric could be improved.
  • the improvement can be seen in that the entire width of the beginning of a thread fleece can now be presented to the fleece funnel. No part of the total width of the nonwoven has to be presented to the nonwoven funnel.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
EP97104686A 1996-05-09 1997-03-19 Entonnoir de ruban de fibres Withdrawn EP0806502A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19618642A DE19618642B4 (de) 1996-05-09 1996-05-09 Vliestrichter
DE19618642 1996-05-09

Publications (2)

Publication Number Publication Date
EP0806502A2 true EP0806502A2 (fr) 1997-11-12
EP0806502A3 EP0806502A3 (fr) 1998-07-08

Family

ID=7793808

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97104686A Withdrawn EP0806502A3 (fr) 1996-05-09 1997-03-19 Entonnoir de ruban de fibres

Country Status (4)

Country Link
US (1) US5761773A (fr)
EP (1) EP0806502A3 (fr)
JP (1) JPH1046436A (fr)
DE (1) DE19618642B4 (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11222735A (ja) * 1997-10-30 1999-08-17 Zellweger Luwa Ag 長く延びた繊維中間製品を引込む装置
DE19945319B4 (de) 1999-09-22 2010-01-14 Rieter Ingolstadt Gmbh Vliestrichter
DE102007011357A1 (de) * 2007-03-07 2008-09-11 Rieter Ingolstadt Gmbh Vorrichtung an einer Spinnereivorbereitungsmaschine
JP2010150713A (ja) * 2008-12-25 2010-07-08 Hara Shokki Seisakusho:Kk ギャザラー
JP5924860B2 (ja) * 2010-12-03 2016-05-25 株式会社豊田自動織機 前紡工程のドラフト装置の制御方法及び制御装置
CN102747463B (zh) * 2011-04-21 2015-07-22 沈阳宏大纺织机械有限责任公司 纤维网收拢压缩装置
CN103643358A (zh) * 2013-12-18 2014-03-19 山东宏业纺织股份有限公司 并条机集束器
DE102015101704A1 (de) 2015-02-06 2016-08-11 Rieter Ingolstadt Gmbh Vliestrichter zum Verdichten eines Faservlieses
CN104746189B (zh) * 2015-03-04 2017-01-11 武汉纺织大学 一种负压引导捕捉式环锭纺纱方法
DE102015106808A1 (de) * 2015-04-30 2016-11-03 Rieter Ingolstadt Gmbh Vliestrichter zum Verdichten eines Faservlieses mit einem Leitelement

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2623400A1 (de) * 1975-09-09 1977-03-10 Elitex Zavody Textilniho Vorrichtung zur verdichtung und fuehrung von textilfasern
DE3612133A1 (de) * 1986-04-10 1987-10-15 Zinser Textilmaschinen Gmbh Bandfuehrungskanal zwischen ausgangswalzen und kalanderwalzen an einer spinnereivorbereitungsmaschine
DE4235653C1 (de) * 1992-10-22 1994-03-17 Rieter Ingolstadt Spinnerei Vliestrichter eines textilen Streckwerkes
EP0736617A1 (fr) * 1995-04-07 1996-10-09 Rieter Ingolstadt Spinnereimaschinenbau AG Transport pneumatique de mèche de fibres dans une calandre

Family Cites Families (17)

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DE290679C (fr) *
US614819A (en) * 1898-11-29 Xsttobe albasinl
GB406508A (en) * 1933-04-25 1934-03-01 Louis Jacobi Improvements in and relating to funnel guides for the delivery of slivers form cotton drawing frames
GB632266A (en) * 1947-09-02 1949-11-18 Howard & Bullough Ltd Improvements in or relating to drafting apparatus for textile spinning and like machines
DE801254C (de) * 1949-03-27 1950-12-28 Suedd Spindelwerke Zinser Einrichtung zum Verdichten einer Lunte
GB786528A (en) * 1955-05-31 1957-11-20 Tmm Research Ltd Improvements in drafting apparatus for textile spinning and like machines
US2996873A (en) * 1958-11-07 1961-08-22 Callaway Mills Co Method for producing multi-colored single yarn
FR2466527A1 (fr) * 1979-09-28 1981-04-10 Alsacienne Constr Meca Dispositif automatique d'introduction d'un voile de fibres textiles dans un coiler
FR2537609A1 (fr) * 1982-12-13 1984-06-15 Mat Textil Ste Als Const Dispositif pour le guidage a grande vitesse d'un voile de fibres textiles et pour la formation d'une meche dans un canal de guidage avant introduction dans un coiler d'empotage
DD212754B1 (de) * 1982-12-22 1989-01-11 Textima Veb K Trichter fuer spinnereivorbereitungsmaschinen, insbesondere deckelkarde, strecken, kaemmaschinen und flyer
DE3732968A1 (de) * 1987-09-30 1989-04-20 Zinser Textilmaschinen Gmbh Trichter fuer eine trichterspinnvorrichtung
DE3801688C2 (de) * 1988-01-21 1999-04-08 Truetzschler Gmbh & Co Kg Bandführungskanal
DE3807582A1 (de) * 1988-03-08 1989-09-21 Hollingsworth Gmbh Vorrichtung zum komprimieren und selbsttaetigen einfuehren eines textilen faserbandes
DE3839413A1 (de) * 1988-11-22 1990-05-23 Rieter Ag Maschf Trichteranordnung am ausgang einer karde
EP0736619B1 (fr) * 1995-04-07 1998-05-06 Rieter Ingolstadt Spinnereimaschinenbau AG Méthode et dispositif pour insérer du ruban devant la fente de pincement des disques de calandre
EP0736620B1 (fr) * 1995-04-07 1998-06-17 Rieter Ingolstadt Spinnereimaschinenbau AG Dispositif de guidage pour ruban de fibres pour une machine de textile utilisant des rubans de fibres et procédé pour son opération
US5680678A (en) * 1995-04-07 1997-10-28 Rieter Ingolstadt Spinnereimaschinenbau Ag Process and guide system for the introduction of a fiber sliver into the nip line of calender disks of a fiber processing textile machine

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2623400A1 (de) * 1975-09-09 1977-03-10 Elitex Zavody Textilniho Vorrichtung zur verdichtung und fuehrung von textilfasern
DE3612133A1 (de) * 1986-04-10 1987-10-15 Zinser Textilmaschinen Gmbh Bandfuehrungskanal zwischen ausgangswalzen und kalanderwalzen an einer spinnereivorbereitungsmaschine
DE4235653C1 (de) * 1992-10-22 1994-03-17 Rieter Ingolstadt Spinnerei Vliestrichter eines textilen Streckwerkes
EP0736617A1 (fr) * 1995-04-07 1996-10-09 Rieter Ingolstadt Spinnereimaschinenbau AG Transport pneumatique de mèche de fibres dans une calandre

Also Published As

Publication number Publication date
EP0806502A3 (fr) 1998-07-08
DE19618642A1 (de) 1997-11-13
DE19618642B4 (de) 2007-07-19
US5761773A (en) 1998-06-09
JPH1046436A (ja) 1998-02-17

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