EP3144419A1 - Adaptateur de plaques de canal et dispositif de tissage ouvert comprenant un adaptateur de plaques de canal - Google Patents

Adaptateur de plaques de canal et dispositif de tissage ouvert comprenant un adaptateur de plaques de canal Download PDF

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Publication number
EP3144419A1
EP3144419A1 EP16189189.0A EP16189189A EP3144419A1 EP 3144419 A1 EP3144419 A1 EP 3144419A1 EP 16189189 A EP16189189 A EP 16189189A EP 3144419 A1 EP3144419 A1 EP 3144419A1
Authority
EP
European Patent Office
Prior art keywords
rotor
fiber channel
output fiber
channel
plate adapter
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.)
Granted
Application number
EP16189189.0A
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German (de)
English (en)
Other versions
EP3144419B1 (fr
Inventor
Siegfried Krohmer
Helmut Wollinger
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
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Publication date
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Application filed by Maschinenfabrik Rieter AG filed Critical Maschinenfabrik Rieter AG
Publication of EP3144419A1 publication Critical patent/EP3144419A1/fr
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Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H4/00—Open-end spinning machines or arrangements for imparting twist to independently moving fibres separated from slivers; Piecing arrangements therefor; Covering endless core threads with fibres by open-end spinning techniques
    • D01H4/04—Open-end spinning machines or arrangements for imparting twist to independently moving fibres separated from slivers; Piecing arrangements therefor; Covering endless core threads with fibres by open-end spinning techniques imparting twist by contact of fibres with a running surface
    • D01H4/08—Rotor spinning, i.e. the running surface being provided by a rotor
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H4/00—Open-end spinning machines or arrangements for imparting twist to independently moving fibres separated from slivers; Piecing arrangements therefor; Covering endless core threads with fibres by open-end spinning techniques
    • D01H4/38—Channels for feeding fibres to the yarn forming region
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H4/00—Open-end spinning machines or arrangements for imparting twist to independently moving fibres separated from slivers; Piecing arrangements therefor; Covering endless core threads with fibres by open-end spinning techniques
    • D01H4/40—Removing running yarn from the yarn forming region, e.g. using tubes

Definitions

  • the present invention relates to a channel plate adapter for use in a cover of a rotor housing of an open-end spinning device, wherein a rotor is rotatably arranged in the rotor housing.
  • the channel plate adapter includes an output fiber channel which directs fibers to the rotor, the fibers entering an inlet side of the output fiber channel and from which the fibers exit to the rotor on an outlet side of the output fiber channel.
  • the inlet opening and the outlet opening of the fiber guide channel in this case have a slot-like shape, wherein the maximum extent of the inlet opening extends parallel to the axis of rotation of the opening roller and the maximum extent of the outlet opening of the Faserleitkanals with respect to the maximum extent of the inlet opening by 90 ° +/- 10 ° is arranged rotated about a longitudinal axis of the Faserleitkanals.
  • the Faserleitkanal is swung and is twisted in itself.
  • the disadvantage here is that such a curved fiber guide channel is more difficult to manufacture. Moreover, with such a fiber guide channel, the fiber quality is not sufficiently increased.
  • the object of the present invention is thus to provide a fiber channel which improves a quality of a yarn of a spinning machine.
  • a channel plate adapter is proposed for use in a cover of a rotor housing of an open-end spinning device.
  • a rotor is rotatably arranged in the rotor housing.
  • the rotor serves to form a yarn from individual fibers.
  • the fibers are introduced through a single rotor opening of the rotor in this.
  • a rotor bottom is spaced from the rotor opening, which defines an interior of the rotor in an axial direction.
  • a rotor wall is arranged, which has a fiber collecting groove, which is formed with a larger radius than the rotor wall.
  • centrifugal forces are formed by the rotation, which guide the fibers along the rotor wall into the fiber collecting groove.
  • the individual fibers combine to form a yarn which is withdrawn from the rotor and wound onto a spool.
  • the individual fibers can come from an opening roller, which combs out the individual fibers from a fiber structure.
  • the channel plate adapter has an output fiber channel which receives the fibers from the direction of the opening roller come through the rotor opening into the rotor passes.
  • the fibers can be introduced into the rotor in a defined manner. For example, a speed of the fibers entering the rotor can be determined with the output fiber channel.
  • the output fiber channel has an inlet side at which the individual fibers enter the output fiber channel and an outlet side at which the individual fibers emerge from the output fiber channel to the rotor.
  • the outlet side of the output fiber channel is spaced from the rotor wall. This distance is in the range of a few millimeters, for example in the range of 1 mm - 4 mm.
  • the output fiber channel has a bend between the inlet and the outlet side.
  • the kink divides the output fiber channel into a first section, which is formed between inlet side and kink, and a second section, which is formed between kink and outlet side.
  • the fibers thus flow first through the first section of the output fiber channel and then through the second section of the output fiber channel.
  • the kink buckles while the second portion of the output fiber channel relative to the first portion, that the second portion is bent or deflected against a rotational direction of the rotor.
  • the channel plate adapter has a substantially cylindrical or slightly conical body, on which, however, various extensions that are required for functional or structural reasons, may be formed.
  • the output fiber channel passes through the base body obliquely to the central axis of the body and opens into the lateral surface of the body near an end face of the body.
  • the end face of the main body, at which the output fiber channel opens, forms an inner side of the channel plate adapter, while the end face of the main body opposite the inner side forms an outer side of the channel plate adapter.
  • buckling Another description of the buckling could be that the kink diverts the second section such that it is inclined away from a rotation axis of the rotor.
  • the output fiber channel is brought as tangential as possible to the rotor wall.
  • the second portion of the output fiber channel is bent against the direction of rotation of the rotor by means of the Knicks, it is achieved that the second portion of the output fiber channel is at a steeper or "vertical" angle on the rotor wall.
  • the individual fibers can not be accelerated as much as when the fibers are fed tangentially. This has the effect that, when the individual fibers emerge from the outlet side of the output fiber channel, a front part of the individual fibers first comes into contact with the rotor wall and is pulled along or accelerated by it.
  • the rotor wall has a higher (rotational) speed than the individual fibers in the output fiber channel and in particular as the fibers in the second section of the output fiber channel.
  • the front part of the fibers impinging on the rotor wall is accelerated by the faster moving rotor wall, while a rear part of the individual fibers is thereby still located in the output fiber channel and in particular has a lower speed than the rotor wall.
  • especially the speed of the rear part of the individual fibers is lower than the speed of the front part of the individual fibers.
  • Such a speed difference, or such a higher acceleration of the front part of the individual fibers relative to the rear part of the individual fibers leads to an elongation of the individual fibers.
  • irregularities are stretched out of the individual fibers.
  • the individual fibers have a higher uniformity after such a stretching process, and form a yarn with a higher yarn quality, wherein a tear strength is increased.
  • the kink has another effect. Due to the kink, the individual fibers are no longer guided in a straight line through the output fiber channel, but rather, in particular in the second section, after the kink on an inner wall of the output fiber channel. The individual fibers slide down to the outlet side along this inner wall. This creates a friction between the individual fibers and the inner wall, which additionally inhibits the individual fibers in their acceleration. As a result, a difference in velocity between the front part of the individual fibers, which are already accelerated by the rotor, and the rear part of the individual fibers, which are inhibited by the friction between fibers and inner wall in their acceleration, becomes larger, so that the individual fibers still be stretched more. The fibers thus reach the rotor with a particularly good stretch or straightness, and these are spun into a yarn having a higher quality.
  • a third effect occurs because the individual fibers, as they exit the exit fiber channel on the outlet side, are pulled over an edge which extends between the outlet side and the inner wall along which the fibers slide.
  • the inner wall, along which the individual fibers along slip, and the rotor wall can have an angle.
  • the individual fibers are deflected at the exit from the exit fiber channel by such an angle.
  • the individual fibers are pulled over the edge at this angle, so that the irregularities from the individual fibers are smoothed.
  • the channel plate adapter has a trigger element, by means of which a yarn formed by the rotor can be deflected out of the rotor.
  • the extraction element may include, for example, a trigger nozzle.
  • the trigger element can be arranged, for example, coaxially to the axis of rotation of the rotor, so that the finished yarn can be withdrawn from the center of the rotor.
  • the first section of the output fiber channel which is formed between the bend and the inlet side, encloses an angle between 170 ° and 179 ° with respect to the second section.
  • the angle may have values between 173 ° and 177 °.
  • the angle may also have a value of 175.6 °.
  • the output fiber channel between the inlet and outlet side is bent such that the second portion is inclined in the direction of the rotor bottom.
  • the second portion is thus compared to the first portion not only in the radial direction of the main body of the channel plate adapter, but also in a further direction, in particular in the axial direction of the body, bent. This allows the fibers to be better introduced into the rotor.
  • the fibers receive a velocity component which is directed away from the rotor opening and directed towards the rotor bottom. This feeds the fibers safely onto the rotor wall.
  • the output fiber channel has, for example, a second kink which, for example, is orthogonal to the first kink according to the invention, ie the second kink kinks the output fiber channel exclusively in one plane and the first kink kinks the output fiber channel exclusively in a plane orthogonal thereto.
  • the second kink may be located anywhere between the inlet and outlet sides. In this case, the second kink can also be arranged in the same place as the first kink.
  • the second section is inclined relative to the first section of the output fiber channel by an angle between 1 ° and 25 ° in the direction of the rotor bottom.
  • the angle can be between 3 ° and 15 °.
  • the output fiber channel is tapered from the inlet side to the outlet side.
  • a flow velocity of the air flowing in the output fiber passage from the inlet side to the outlet side is accelerated according to the Venturi effect.
  • the individual fibers have the highest acceleration resulting therefrom on the outlet side and the resulting lowest acceleration on the inlet side. This difference in acceleration also results in stretching of the individual fibers in the exit fiber channel on their way from the inlet side to the outlet side, which, for example, pulls fiber creases out of the fibers, so that the yarn quality increases.
  • the output fiber channel on the outlet side has an area between 10 mm 2 and 30 mm 2 .
  • the area can be between 18 mm 2 and 25 mm 2 .
  • the output fiber passage on the outlet side may have a round cross section with a diameter of 5.5 mm, so that the area is 23.76 mm 2 .
  • the ratio of a fiber density flowing through the output fiber channel and the air flow can be advantageously determined.
  • the output fiber channel has a slot-shaped cross-section.
  • the cross section may also have an elliptical and / or an oval cross-section.
  • An advantageous embodiment of the output fiber channel with a slot-shaped, in particular an elliptical and / or an oval, cross-section is when a largest internal dimension of the cross section or a largest dimension of the output fiber channel, in particular that of the second portion, is oriented parallel to a plane of rotation of the rotor ,
  • the rotating rotor defines a plane of rotation, which is arranged in particular parallel to the rotor opening and / or parallel to the rotor bottom.
  • the plane of rotation is also perpendicular to the axis of rotation of the rotor.
  • the largest internal extent of the cross section is arranged, for example, in the case of an elliptical cross section along the large semiaxis (and amounts to twice the large semiaxis).
  • the output fiber channel is oriented with an elliptical and / or oval cross section in such a way that the largest internal dimension of the cross section or the largest dimension of the output fiber channel is oriented substantially perpendicular to a central axis of the cylindrical base body.
  • the individual fibers slip on the inner wall of the output fiber channel, in particular of the second section, along which the output fiber channel has the largest curvature.
  • the individual fibers are thus compressed in this "valley" of the inner wall of the output fiber channel. This represents, for example, pre-compression, followed by yarn formation in the fiber-collecting groove of the rotor. The quality of the spun yarn is thus improved.
  • An alternative advantageous embodiment of the output fiber channel with a slot-shaped, in particular an elliptical and / or oval, cross-section is when the largest internal dimension of the cross section or the largest dimension of the output fiber channel is oriented perpendicular to the plane of rotation of the rotor.
  • the output fiber channel is oriented with an elliptical and / or oval cross section in such a way that the largest inner dimension of the cross section or the largest dimension of the output fiber channel is oriented substantially in the direction of a central axis of the cylindrical base body.
  • the largest internal extent of the cross section and the plane of rotation are again the same as defined in the embodiment just discussed.
  • the individual fibers slip along the inner wall, which has a minimal curvature.
  • the individual fibers spread over a larger area on the inner wall and thus experience a higher braking effect by the friction between the individual fibers and the inner wall.
  • the individual fibers are thus more inhibited in their acceleration and can be accelerated and stretched particularly well through the rotor wall.
  • the straightness of the individual fibers is thereby increased, which improves the quality of the yarn.
  • the largest inner extent of the cross section of the output fiber channel, in particular of the second portion also be arranged obliquely to the plane of rotation of the rotor.
  • an open-end spinning apparatus of a spinning machine having a fiber passage for introducing fibers into a rotor is proposed.
  • the rotor is rotatably mounted in a rotor housing.
  • the fiber channel further includes an input fiber channel disposed in an opening roller housing and an output fiber channel disposed in a channel plate adapter insertable into a cover of the rotor housing.
  • the output fiber channel connects to the input fiber channel, so that the fibers are first passed through the input fiber channel and then through the output fiber channel to the rotor.
  • the channel plate adapter is formed according to the preceding description. This improves a yarn quality of the yarn emerging from a rotor.
  • An advantageous development of the open-end spinning device according to the invention is when a transitional bend is formed between the input fiber channel and the output fiber channel.
  • the individual fibers are conducted to an inner wall of the output fiber channel already at the transition from input to output fiber channel. From this they experience a friction and are also inhibited in their acceleration in the output fiber channel. As a result, the stretch of the individual fibers is reinforced, which again leads to a higher yarn quality.
  • the input fiber channel and the output fiber channel form an angle between 155 ° and 180 °, in particular between 170 ° and 180 °.
  • the individual fibers can be passed to the inner wall to a correct extent after the transitional bend.
  • the output fiber channel is bent relative to the input fiber channel in the direction of rotation of the rotor. But this does not rule out that at some rotor diameters, this angle can be greater than 180 °.
  • FIG. 1 shows a plan view of a schematic opening roller 10, an opening roller housing 11, a fiber channel and a rotor 2.
  • the opening roller 10 is rotatably disposed in the opening roller housing 11 and dissolves a fiber strand, not shown here, so that individual fibers are formed.
  • an input fiber channel 12 is arranged, which is preferably designed as an insert 4 insertable into the opening cylinder housing 11.
  • To the opening roller housing 11 includes a channel plate adapter 1, which has an output fiber channel 3.
  • the input fiber channel 12 passes into the output fiber channel 3 and both together form the fiber channel which guides the individual fibers from the opening roller 10 to the rotor 2.
  • the output fiber channel 3 further has an inlet side 5 at which the individual fibers from the input fiber channel 12 into the output fiber channel 3, and an outlet side 6, at which the individual fibers leave the output fiber channel 3 and enter the rotor 2 on.
  • the channel plate adapter 1 is inserted into a cover of a rotor housing, not shown here, which closes the rotor housing.
  • the rotor 2 has a fiber collecting groove 13 (see FIG. FIG. 2 ) into which the individual fibers slip by centrifugal forces and become a yarn connect.
  • the rotor 2 rotates in a rotational direction DR and thereby generates the centrifugal forces.
  • the finished spun yarn is guided out of the rotor 2 by a withdrawal element (not shown here).
  • the quality of the individual fibers 4 guided into the rotor 2 has a significant influence on a quality of the spun yarn.
  • the channel plate adapter 1 has a kink 7 which is arranged between the inlet side 5 and the outlet side 6.
  • the kink divides the output fiber channel 3 into a first section 8, which is formed between the inlet side 5 and the kink 7, and a second section 9, which is formed between kink 7 and outlet side 6.
  • the fibers thus flow first through the first portion 8 and then through the second portion 9 of the output fiber channel 3.
  • the kink 7 is formed such that the second portion 9 opposite to the first portion 8 against the direction of rotation DR of the rotor 2 kinked.
  • the rotor 2 rotates clockwise, whereas the kink 7 is formed such that the second portion 9 is folded counterclockwise.
  • first section 8 with the second section 9 encloses an angle ⁇ , which can be formed between 170 ° and 179 °, in particular between 173 ° and 177 °, preferably 175.6 ° (note here that the Angle ⁇ in the FIG. 1 for better illustration has a much lower value).
  • the kink 7 causes the individual fibers to run at the transition from the first section 8 in the second section 9 of the output fiber channel 3 to an inner wall 14 of the second section 9. In this case, the individual fibers slide along this inner wall 14 to the outlet 6 of the output fiber channel 3, which is associated with a friction. By the friction between the individual fibers and the inner wall 14 are the individual fibers are inhibited in an acceleration which the rotating rotor 2 exerts on the individual fibers. When the individual fibers emerge from the outlet side 6 of the output fiber channel 3, they first experience an acceleration by the rotor 2 at a front part which is trimmed at the individual fibers of the fiber collecting groove 13. The rotor 2 pulls the individual fibers out of the output fiber channel, so to speak 3.
  • a further effect results from the kink 7, since the individual fibers are pulled when exiting the outlet 6 over an edge 16 of the outlet 6.
  • the edge 16 is arranged between the inner wall 14, on which the individual fibers slide along, and the outlet side 6. This will also cause irregularities such as Fiber bends, smoothed out of the individual fibers.
  • the output fiber channel 3 is further arranged, the output fiber channel 3, in particular its first section 8, with the input fiber channel 12 an angle ⁇ between 155 ° and 180 °, in particular between 170 ° and 180 ° can.
  • the individual fibers can be conducted through the transitional bend 15 to an inner wall of the first section 8 of the output fiber channel 3, so that the acceleration of the individual fibers in the output fiber channel 3 is further inhibited. This further improves the quality of the spun yarn.
  • the input fiber channel 12 as well as the output fiber channel 13 also be designed such that the angle ⁇ has a value greater than 180 °.
  • FIG. 2 a side sectional view of a channel plate adapter 1 and a section of an opening roller housing 11 is shown.
  • the channel plate adapter 1 has the output fiber channel 3, which has the inlet side 5 and the outlet side 6. From the outlet side 6, the individual fibers emerge from the output fiber channel 3. A part of the channel plate adapter 1 engages through a rotor opening 18 in the rotor 2, so that the individual fibers pass directly into the rotor 2. Upon exiting the output fiber channel 3, the individual fibers first strike a rotor wall 19, which bounds the rotor 2 from the inside.
  • the output fiber channel 3 has an angle ⁇ in the direction of a rotor bottom 17.
  • the output fiber channel 3 is thus inclined with the outlet side 6 of the rotor bottom 17.
  • the individual fibers are better introduced into the rotor 2.
  • this can prevent the individual fibers from escaping from the rotor opening 18 as a result of the directional impulse of the individual fibers in the direction of the rotor bottom 17.
  • a second bend 20 is formed between the input fiber channel 12 and the output fiber channel 3.
  • this second bend 20 could also be arranged between the inlet side 5 and the outlet side 6.
  • the second bend 20 could also be at the location of the buckling 7 according to the invention (cf. FIG. 1 ) can be arranged.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Preliminary Treatment Of Fibers (AREA)
EP16189189.0A 2015-09-21 2016-09-16 Adaptateur de plaques de canal et dispositif de filage à bout libre comprenant un adaptateur de plaques de canal Active EP3144419B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102015115912.0A DE102015115912A1 (de) 2015-09-21 2015-09-21 Kanalplattenadapter und Offenendspinnvorrichtung mit einem Kanalplattenadapter

Publications (2)

Publication Number Publication Date
EP3144419A1 true EP3144419A1 (fr) 2017-03-22
EP3144419B1 EP3144419B1 (fr) 2018-08-29

Family

ID=56939942

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16189189.0A Active EP3144419B1 (fr) 2015-09-21 2016-09-16 Adaptateur de plaques de canal et dispositif de filage à bout libre comprenant un adaptateur de plaques de canal

Country Status (4)

Country Link
US (1) US10167577B2 (fr)
EP (1) EP3144419B1 (fr)
CN (1) CN106544763B (fr)
DE (1) DE102015115912A1 (fr)

Cited By (1)

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CN106544763A (zh) 2017-03-29
CN106544763B (zh) 2021-08-17
US20170081789A1 (en) 2017-03-23
US10167577B2 (en) 2019-01-01
EP3144419B1 (fr) 2018-08-29

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