WO2019115355A1 - Banc d'étirage pour un métier à filer et dispositif de compression - Google Patents

Banc d'étirage pour un métier à filer et dispositif de compression Download PDF

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Publication number
WO2019115355A1
WO2019115355A1 PCT/EP2018/083835 EP2018083835W WO2019115355A1 WO 2019115355 A1 WO2019115355 A1 WO 2019115355A1 EP 2018083835 W EP2018083835 W EP 2018083835W WO 2019115355 A1 WO2019115355 A1 WO 2019115355A1
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WO
WIPO (PCT)
Prior art keywords
bearing shell
suction tube
drafting system
suction
output
Prior art date
Application number
PCT/EP2018/083835
Other languages
German (de)
English (en)
Inventor
Gerd Stahlecker
Gernot Schaeffler
Carolina BIANCO
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
Priority to CN201880080038.0A priority Critical patent/CN111527248B/zh
Publication of WO2019115355A1 publication Critical patent/WO2019115355A1/fr

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Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H1/00—Spinning or twisting machines in which the product is wound-up continuously
    • D01H1/02—Spinning or twisting machines in which the product is wound-up continuously ring type
    • D01H1/025—Spinning or twisting machines in which the product is wound-up continuously ring type with a condensing device between drafting system and spinning unit
    • 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 present invention relates to a drafting system for a spinning machine for drawing a fiber strand, with top and bottom rollers and with a loading arm on which the top rollers of the drafting arrangement are arranged, with a pair of output rollers, which is formed by an output top roller and an output cylinder arranged underneath , And with a the output roller pair of the drafting downstream pneumatic compression device for compression of the stretched fiber structure, which has a suction tube suctionable and a compression device for a drafting system with a suction tube suctioned.
  • Draw frames for spinning machines comprise at least two pairs of rollers between which a fiber strand is drawn due to the different speeds of rotation of the roller pairs.
  • the pair of rollers after which the stretched fiber structure leaves the drafting system and is fed to a spinning device is referred to as a pair of delivery rollers.
  • the output roller pair consists of an output top roller and an output bottom roller or an output cylinder, which forms a nip through which the fiber strand is conveyed.
  • Devices for compaction of the drawn fiber structure are arranged after the output roller pair. Mechanical as well as pneumatic compacting devices are used.
  • the compacting device disclosed therein is of pneumatic construction and consists essentially of a suction shoe and a perforated th means of transport.
  • a pressure element is applied to one of the rollers of the pair of output rollers, which forms a second nip with the roller next to the nip between the output top roller and the bottom roller output.
  • DE 100 50 089 A1 does not go.
  • a disadvantage of the proposed device is that an irregular compression of the fiber structure can take place due to the random adjustment of the pressure element on the roller of the output roller pair.
  • the compacting device disclosed therein is also of a pneumatic design with a hollow profile and a perforated transport means for the compacting device.
  • the fiber bundle leaving the delivery roller pair of the drafting system is placed on the perforated transport means and guided by the latter over the hollow profile.
  • the hollow profile can be pressed by at least one frictional element against one of the rollers. How this frictional element is formed and where it is fastened is not apparent from this document.
  • a disadvantage of the disclosed device is that a force-fit element alone can not yet ensure that the hollow profile can be pressed against the roller in a defined manner.
  • a defined pressing of the hollow profile to the top roll is here dependent on the position of the top roll, which in turn is dependent on the setting of the pressure arm of the drafting system carrying it.
  • the object of the present invention is to further develop known devices and to provide a compacting device that is simple in design and can be used at individual spinning stations, which is characterized by a reliably uniform compression of the fiber structure.
  • the object is achieved by a drafting system and a Verdichtungsvorrich- device with the features of the independent claims.
  • An inventive drafting system for a spinning machine has top and bottom rollers and a loading arm on which the top rollers of the drafting arrangement are arranged on.
  • An output roller pair is formed by an output top roller and an output cylinder arranged therebelow, which extends over a plurality of drafting devices arranged parallel to one another.
  • the output roller pair of the drafting system is followed by a pneumatic compression device for compressing a stretched fiber structure.
  • the compression device has an absorbable suction tube.
  • the suction pipe is arranged on a bearing shell and the bearing shell is mounted on the output cylinder.
  • This bearing shell ensures that the suction tube can be received and fastened in a defined manner.
  • the bearing shell causes a defined position of the suction tube, since it is attached to both the output cylinder, which is permanently installed in the spinning machine.
  • the suction pipe is arranged on the bearing shell.
  • a defined assignment of the intake manifold to the output top roller or the output cylinder is made possible. This also ensures that the suction tube rests evenly on the output top roller and the output cylinder. There is no angular misalignment between the suction tube and output top roller or output cylinder, they are rather parallel to each other and thus cause a uniform compression of the fiber structure.
  • the suction pipe is looped by a sieve element. Fibers from the fiber structure are thus not sucked through the suction tube.
  • the fiber structure can be evenly compacted and transported through the nip between the suction tube and the exit upper roller or output lower roller.
  • the sieve element is preferably a Siebriemchen, but may also be a screen roller.
  • the compacting device has a fiber-bundling zone and the fiber-bundling zone is delimited by two clamping points.
  • a first nip is defined by the rollers of the pair of outfeed rollers, and a second nip is formed by one of the two rollers of the outfeed roller pair and the screen element.
  • the fiber structure is clamped at these two clamping points and is compressed on the suction tube, which causes a suction of the fiber composite between the two clamping points.
  • the bearing shell is rotatable about the axis of the output cylinder.
  • it can also be tiltably mounted along the axis of the output cylinder and / or tiltable perpendicular to the axis of the output cylinder. This movable mounting ensures that the suction tube can optimally adapt to the two rollers of the pair of delivery rollers and can be pressed evenly against the output cylinder or the exit roller.
  • a spring device which acts on the suction tube and / or the bearing shell and the suction tube against the réelleoberwalze or lower gear presses.
  • the spring which in a preferred embodiment is also adjustable in its pressing force, ensures a uniform loading of the suction tube and thus for a continuous and uniform compression of the fiber structure.
  • the spring of the spring device is supported on the machine frame. This allows a simple and inexpensive construction of the spring device.
  • the bearing shell takes on two, in particular interconnected, suction tubes.
  • Each of the suction pipes is assigned to one of two adjacent drafting units.
  • the bearing shell arranged on the output cylinder supplies the two adjacent drafting systems, whose upper rollers carry a loading arm, via the suction pipes with the necessary for the compacting device suppressing.
  • the design is particularly simple when the two suction pipes are pneumatically connected to each other or when a single suction pipe is provided for two adjacent drafting systems. So it is possible that two suction pipe connections are not required to provide the suction pipes with negative pressure, but that only one connection is necessary, through which the two adjacent suction points can be simultaneously sucked.
  • the bearing shell is supported laterally on the output top roller. This results in a simple way an exact assignment and axial alignment of the bearing shell and thus the suction tube to the pair of output rollers. If the lateral support also has chamfers for the output top roller, then an automatic threading and thus aligning the bearing shell is guaranteed to the output top roller when opening and closing the drafting. If, in an advantageous embodiment, the bearing shell is designed in such a way that it encompasses the output cylinder from above and / or from below and is preferably clipped onto the output cylinder, then a simple fastening of the bearing shell to the output cylinder is made possible. At the same time, the bearing shell is fixed radially on the output cylinder and can be easily mounted and removed.
  • the bearing shell is associated with a traversing device.
  • the traversing can be done by a traversing rod made by the machine.
  • the suction tube and the sieve element preferably together with all other fiber guide elements, such as inlet funnel, impfeldkondenser etc., alike oscillated.
  • the suction tube is connected to a tensioning device for the sieve element.
  • the sieve element which wraps around the suction pipe, is preferably laid around the suction pipe with a defined clamping force.
  • the tensioning device which is arranged on the suction pipe, ensures a defined and uniform prestressing of the screening element on the suction pipe.
  • the suction tube in particular separable, arranged on a suction tube.
  • the suction tube is used to connect the suction tube with a suction source, which is arranged in the spinning machine.
  • the suction tube is arranged stationary on the drafting system.
  • the suction tube thus connects the suction pipe with the likewise stationary in the spinning machine arranged suction source.
  • the suction tube may have a separation point, with a first part of the suction tube being movable together with the suction tube and the bearing shell and a second part in the region of the lower rollers stationary, possibly elastically mounted, is arranged on the drafting system or the spinning machine. It is thus a connection between the movable bearing shell and the stationary part of the suction device, which is arranged in the spinning machine, causes.
  • suction pipes for two adjacent intake pipes are arranged on the side of the bearing shell.
  • Each suction pipe is thus besaugbar independently of the adjacent intake manifold. This ensures an individual and also optionally individually adjustable suction of the compression device.
  • two adjacent suction pipes lead into a common suction pipe. This results in a simple constructive solution and is in most cases sufficient for a uniform suction of two adjacent drafting or compression devices.
  • the suction pipe is arranged on a bearing shell and the bearing shell is intended to be stored on the output cylinder.
  • the compacting device can thus be subsequently arranged on a loading arm and thus supplement an existing drafting system by a compacting device. This is particularly advantageous when existing spinning machines are to be retrofitted and a novel compression device is to improve the drafting system.
  • Figure 1 is a schematic representation of a longitudinal section of a
  • Figure 2 is a side view of a compacting device
  • FIG. 3 shows a side view of a further compacting device
  • FIG. 4 a shows a side view of a compacting device with a tiltable bearing shell
  • FIG. 4b shows a section through the bearing shell of FIG. 4a
  • FIG. 5a shows a bearing shell with two suction devices
  • FIG. 5b shows a bearing shell with a suction
  • FIG. 6 shows a side view of a further compacting device
  • FIG. 7a shows a detail of the compacting device of FIG. 3 and FIG
  • Figure 7b is a plan view of the limiting fork of Figure 7a.
  • the same reference numbers are used for features which are identical and / or at least comparable in their design and / or mode of action. Unless these are explained again in detail, their design and / or mode of action of the design and mode of action corresponds to the features already described above.
  • FIG. 1 shows a schematic representation of a longitudinal section of a spinning machine, in particular a ring spinning machine with a compacting device 20. Shown are, by way of example, individual components of the spinning machine, namely a drafting device 2 and a spinning device 10
  • Drawframe 2 consists of three pairs of rollers, an input roller pair 3, a pair of apron rollers 4 and a pair of output rollers 5.
  • the pair of rollers of a pair of rollers are pressed against each other and form at their point of contact a nip, wherein the nip K1 formed by the pair of output rollers 5 between the réelleoberwalze 6 and the output cylinder 7 is.
  • a nip K2 is formed by a suckable suction tube 17 ( Figure 2), which presses against the top roller 6.
  • the fiber strand 1 entering the drafting system 2 is clamped by the clamping points between the rollers of the roller pairs 3, 4 and 5 and is stretched due to the different speeds of the roller pairs 3, 4 and 5.
  • the drawn fiber composite 8 reaches the compacting device 20 in which it is compacted. Between the clamping point K1 and K2, at the suction tube 17 having a suction slot, there is a fiber-bundling zone in which the fibers of the fiber structure 8 are bundled or compacted. Subsequently, the fiber structure 8 reaches the yarn guide 9 and is continued to the spinning device 10.
  • the spinning device 10 consists essentially of a ring rail 14, which carries the spinning ring 12, and a spindle rail 15, on which the coil 13 is mounted.
  • the fiber structure 8 passes through a rotor 11 to the coil 13.
  • the coil 13 is rotated, this has the consequence that the rotor 11 is also rotated by the fiber structure 8 on the ring 12 in rotation.
  • the fiber structure 8 is given a rotation, thereby forming a yarn which is wound on the spool 13 by moving the ring rail 14 up and down.
  • FIG. 2 shows a side view of a compacting device 20 in the region of the output roller pair 5.
  • the upper roller 6 is pressed onto the output cylinder 7 and forms with it a clamping point K1.
  • the top roller 6 is fastened in a known manner by means of a loading unit 26 to the loading arm 19.
  • the output upper roller 6 is pressed against the output cylinder 7 with a loading spring 27 when the loading arm 19 is closed.
  • the attachment of the loading unit 26 to the loading arm 19 takes place in this embodiment by means of an indicated fastener, such as a clamping screw, which can be moved and fixed in a slot.
  • the fastening element in particular allows a displacement of the loading unit 26 within the slot.
  • the nip point K2 is effected between the upper roll 6 and a suction pipe 17 which is pressed by a spring 21 against the réelleoberwalze 6.
  • the suction pipe 17 has a suction slot 32 through which air is sucked.
  • the suction slot 32 is surrounded by a sieve element 18.
  • the sieve 18 wraps around the suction tube 17 and is by means of a Clamping device 22 stretched.
  • the tensioning device 22 is attached to the suction pipe 17 and a Saugrohrhalter 23, respectively. The tensioning device 22 can thus be moved together with the suction tube 17, so that a movement of the suction tube 17 has no influence on the tension of the screening element 18.
  • the suction pipe 17 is connected to a suction pipe 24. Air is sucked out of the suction pipe 17 through the suction pipe 24.
  • Suction tube 17 and suction pipe 24 can be made in one piece in one unit.
  • Suction tube 17, clamping device 22 and suction tube 24 are in this exemplary embodiment attached to the intake manifold 23 or executed as a structural unit.
  • suction tube 17 and suction tube 24 are detachably connected to one another so that any soiling is easy to clean by removing the suction tube 17 from the suction tube 24, and thus the inner spaces of the suction tube 17 and the suction tube 24 for cleaning are easily accessible.
  • the suction pipe 17 is preferably inserted into an opening of the suction pipe 24 or the suction pipe holder 23 and is optionally fixed there, for example by means of a screw.
  • the suction tube holder 23 and thus the suction pipe 17 is arranged on the output cylinder 7.
  • the Saugrohrhalter 23 is this purpose about its pivot point DS with a bearing shell 25 rotatably attached to the output cylinder 7.
  • the bearing shell 25 is fixedly arranged on the Saugrohrhalter 23, whereby the suction pipe 17 is attached indirectly to the bearing shell 25.
  • the suction tube 17 thus rotates about the axis of the output cylinder 7.
  • the bearing shell 25 surrounds the output cylinder 7 from above.
  • the bearing shell 25 can be made elastic, so that it can easily be clipped onto the output cylinder 7 and thus also removed again.
  • the bearing shell is axiomatic along the axis of the output cylinder. al displaceable. In order to be able to align exactly with the output top roller 6, it is preferably designed so that the bearing shell 25 is laterally supported on the output top roller 6.
  • the spring 21 presses the suction tube 17 with a predetermined force against the output upper roller 6.
  • the spring 21 is for this purpose on the bearing shell 25 by means of a bearing member 40 with a spring retainer 42 in which the spring is accommodated supported.
  • An abutment 41 for the spring 21 is attached to a machine frame 28 of the drafting system 2 or the spinning machine.
  • the upper rollers 6 of two parallel drafting units 2 are fastened to a loading arm 19.
  • the top rollers 6 are arranged in the manner of tandem rollers by means of an axle 29 on the loading unit 26 of the loading arm 19.
  • Each of the top rollers 6 protrudes laterally beyond the loading arm 19.
  • two compression devices 20 of adjacent drafting devices 2 are preferably also associated with a loading arm 19.
  • the two compacting devices 20 may be implemented as a structural unit. But they can also be designed individually and thus individually assigned to each drafting system 2.
  • each suction pipe 17 of a drafting system 2 has an exhaust pipe 24.
  • a loading arm 19 has two suction tubes 17 and two suction tubes 24 assigned to it. Each of them is fastened to its own suction tube holder 23 and a bearing shell 25 together with the tensioning device 22 and carries a sieve element 18.
  • the suction tube holders 23 or bearing shells 25 are rotatably arranged on the output cylinder 7.
  • Each suction tube 24 is by means of an elastic connection,
  • an elastic connecting tube 33 with a second part of a suction tube 30, preferably separable connected.
  • the second part of the suction tube 30 is fixed with a clamp 31 on the machine frame 28 and the drafting system 2 and leads to a suction source of the drafting 2 and the spinning machine.
  • the second part of the suction tube 30 is arranged stationary and does not have to be designed to be movable. However, in order to allow a mobility of the suction tube 17 about the axis of the output cylinder 7, the connection or the suction tube 24, 30 must be designed to be elastic.
  • the bearing shell 25 surrounds the output cylinder 7 from above and is clipped onto it.
  • a traversing device is attached on the bearing shell 25 .
  • the traversing device has a traversing rod 43 running along the machine, which is moved back and forth.
  • a traversing tongue 44 is arranged, via which the traversing rod 43 is connected to the bearing shell 25.
  • an inlet funnel 45 for the fiber structure 8 and optionally further fiber guidance devices are arranged at the traversing tongue 44. Due to the traversing of the traversing rod 43, the inlet funnel 45 and the bearing shell 25 with the suction tube 17 arranged thereon are also moved back and forth.
  • wear of the drafting rollers is reduced because the fiber structure 8 is not always clamped at the same point of the drafting rollers. The service life of the drafting rollers is thereby significantly extended.
  • a bearing element 40 is arranged on the bearing shell 25, in turn, a bearing element 40 is arranged.
  • the bearing element 40 is oriented downwards.
  • the bearing shell 25 is pushed upwards together with the suction tube 17, whereby a clamping point K2 between the suction tube 17 and the output top roller 6 for the fiber structure 8 is formed.
  • the suction tube 17 remains largely in the same position as before because the bearing cup 25 is still clipped to the output lower cylinder 7.
  • FIG. 4 a shows a side view of a compacting device with a tiltable bearing shell 25 and in FIG. 4 b a corresponding section through this bearing shell of FIG. 4 a.
  • the bearing shell 25 is designed in such a way that a bevel 46 is provided in its edge regions.
  • This chamfer 46 is designed such that it allows the suction tube 17, which is fixed to the bearing shell 25, to tilt in the vertical direction about the longitudinal axis of the output cylinder 7. In the horizontal direction, however, the bearing shell 25 is attached to the output lower cylinder 7 with no or at least very little play.
  • FIGS. 5a and 5b show two variants of a compacting device 20.
  • FIG. 5 a two intake pipes 17, 17 "are arranged in the intake manifold holder 23.
  • a spring receptacle 42 is arranged in an elongate shape.
  • the elongated shape of the spring receptacle 42 ensures that a compression spring 21, which is arranged stationarily on the machine frame 28 or the drafting arrangement 2, permits axial displacement of the suction tube holder 23 along the output lower cylinder 7.
  • the longitudinal orientation of the spring receiver 42 is accordingly parallel to the axis of the output lower cylinder 7.
  • FIG. 5b shows a second variant of a suction tube holder 23.
  • a single suction pipe 17 with two suction slots 32, 32 ' is arranged in the suction pipe holder 23.
  • the two suction slots 32, 32 ' are suctioned together via a suction tube 24.
  • An individual adjustment of the two negative pressures at the suction slots 32, 32 ' is thus not readily possible in contrast to the embodiment according to FIG. 5 a.
  • the construction of the device is simplified.
  • FIG. 6 shows a side view of a further compacting device 20.
  • the bearing shell 25 is not clipped from above on the output cylinder 7 as in the previous embodiments, but here the assignment of the bearing shell 25 to the output cylinder 7 takes place from below.
  • the spring 21 accordingly presses the bearing shell 25 from below via the bearing element 40. It must be in the assignment of the suction pipe
  • FIG. 7a shows a section of the compacting device of FIG. 3.
  • the traversing tongue is oscillated according to the arrows C and moves the suction tube 17 arranged thereon, and in turn the clamping device 22 arranged on the suction tube 17, for the sieve element 18 back and forth.
  • the sieve element 18 extends around the suction tube 17 and around a deflection bar 49 of the tensioning device 22.
  • a limit fork 47 is provided which bears against a stationary component Spinning machine, for example, on the machine frame 48 is attached.
  • the sieve element 18 of the limiting fork 47 which surrounds the sieve element 18, held back.
  • the screen element 18 thus remains largely in the same place, while the deflection of the screen 18, namely the suction tube 17 and the deflection bar 49 are offset in the axial direction.
  • the fibers of the fiber structure 8 orients themselves according to the current location of the inlet funnel 45 (FIG. 3) and the suction slot 32. The location where the fibers contact the screening element 18 thus changes continuously and the screening element 18 thus becomes constantly different Make some wear and tear exposed by this contact.
  • the sieve element 18 is hereby subjected to continuous loading on the same ben place spared.
  • the change interval of the sieve elements 18 can be extended by here.
  • FIG. 7b shows a plan view of the limiting fork 47 of FIG. 7a.
  • the retention of the sieve element 18 by the stationary Begrenzungsga- bel 47 opposite the direction of double arrow C reversing bar 49 is clearly visible here.
  • the device is designed according to the preceding description, wherein said features may be present individually but also in any combination.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)

Abstract

L'invention concerne un banc d'étirage pour un métier à filer servant à étirer un assemblage de fibres (8). Le banc d'étirage comporte des cylindres supérieurs et inférieurs et un bras de charge (19), sur lequel les cylindres supérieurs du banc d'étirage (2) sont disposés, une paire de cylindres de sortie (5), laquelle est formée par un cylindre supérieur de sortie (6) et un cylindre de sortie (7) disposé en dessous, et un dispositif de compression (20) pneumatique disposé en aval de la paire de cylindres de sortie (5) du banc d'étirage (2), servant à comprimer l'assemblage de fibres (8) étiré avec un tube d'aspiration (17) pouvant être aspiré. Le tube d'aspiration (17) est disposé sur une coque de montage (25), et la coque de montage (25) est montée sur le cylindre de sortie (7). Dans un dispositif de compression pour un banc d'étirage comprenant un tube d'aspiration (17) pouvant être aspiré, le tube d'aspiration (17) est disposé sur une coque de montage (25), et la coque de montage (25) est prévue pour être montée sur le cylindre de sortie (7).
PCT/EP2018/083835 2017-12-15 2018-12-06 Banc d'étirage pour un métier à filer et dispositif de compression WO2019115355A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201880080038.0A CN111527248B (zh) 2017-12-15 2018-12-06 用于纺纱机的牵伸装置和压缩装置

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102017130221.2 2017-12-15
DE102017130221.2A DE102017130221A1 (de) 2017-12-15 2017-12-15 Streckwerk für eine Spinnereimaschine und Verdichtungsvorrichtung

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WO2019115355A1 true WO2019115355A1 (fr) 2019-06-20

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DE (1) DE102017130221A1 (fr)
WO (1) WO2019115355A1 (fr)

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CN113106591B (zh) * 2021-04-19 2022-08-26 济南际通纺织品有限公司 一种阻燃纱线及其生产工艺

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CN111527248B (zh) 2023-02-17
DE102017130221A1 (de) 2019-06-19
CN111527248A (zh) 2020-08-11

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