US20200340149A1 - Suction channel end part, production method and drafting system comprising such a suction channel end part - Google Patents

Suction channel end part, production method and drafting system comprising such a suction channel end part Download PDF

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Publication number
US20200340149A1
US20200340149A1 US16/856,977 US202016856977A US2020340149A1 US 20200340149 A1 US20200340149 A1 US 20200340149A1 US 202016856977 A US202016856977 A US 202016856977A US 2020340149 A1 US2020340149 A1 US 2020340149A1
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US
United States
Prior art keywords
end part
channel end
suction channel
component
inlet
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.)
Pending
Application number
US16/856,977
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English (en)
Inventor
Eduard Prediger
Jochen Dressen
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.)
Saurer Intelligent Technology AG
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Saurer Intelligent Technology AG
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Publication date
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Publication of US20200340149A1 publication Critical patent/US20200340149A1/en
Assigned to Saurer Intelligent Technology AG reassignment Saurer Intelligent Technology AG ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: DREBEN, JOCHEN, Prediger, Eduard
Pending legal-status Critical Current

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    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H11/00—Arrangements for confining or removing dust, fly or the like
    • D01H11/005—Arrangements for confining or removing dust, fly or the like with blowing and/or suction devices
    • 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
    • D01H5/60—Arrangements maintaining drafting elements free of fibre accumulations
    • D01H5/66—Suction devices exclusively
    • 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
    • D01H5/60—Arrangements maintaining drafting elements free of fibre accumulations
    • D01H5/66—Suction devices exclusively
    • D01H5/68—Suction end-catchers

Definitions

  • the invention relates to a suction channel end part for removing fiber flight in the region of a drafting system by applying negative pressure.
  • Such a suction channel end part is known from European Patent Publications EP 1 601 825 A1 and EP 3 026 152 A1, for example.
  • the suction channel end part known from European Patent Publication EP 1 601 825 A1 comprises suction ports each associated with a roller pair and a spinning nozzle, whereby a suction channel end part to be coupled to only one negative pressure source can be provided, by means of which suction channel end part the rollers or the entire drafting system can be cleaned and at the same time the spinning air can be removed from the spinning nozzle.
  • European Patent Publication EP 3 026 152 A1 proposes a suction channel end part by means of which fiber remnants in the region of the drafting system can be efficiently removed regardless of the fiber type of the fiber band to be drafted by the drafting system.
  • the suction channel end part has a single, larger suction port, which can be adjusted in a defined manner in the arrangement direction of the roller pairs and in accordance with the fiber-type-dependent distance between two adjacent roller pairs, which distance is to be changed, in order to make suitable allowance for the distance between the adjacent roller pairs and thus for the fiber type.
  • the aim of the present invention is to enable economical removal of fiber flight in the region of a drafting system by the application of negative pressure, said removal being adaptable to different fiber types.
  • a suction channel end part for removing fiber flight in the region of a drafting system by the application of negative pressure comprising a first component, to which negative pressure can be applied and which has an inlet and an outlet communicating with the inlet.
  • the inlet is provided for introducing or letting the fiber flight present in the region of the drafting system during operation into the suction channel end part by means of the suction flow produced by the application of negative pressure. The fiber flight is removed or let out via the outlet when negative pressure is applied.
  • the suction channel end part is of a defined multi-part design, in contrast to the previously known suction channel end parts.
  • the suction channel end part also has, in addition to the first component, a second component, which is designed as a cover element and to which negative pressure can likewise be applied.
  • the second component can be exchangeably connected to the first component.
  • exchangeably corresponds to the non-destructive or damage-free disconnecting and joining of the first and second components.
  • the first and second components can be repeatedly disconnected from one another and joined by means of different fastening options. For example, positive, frictional or force-fitting connecting means can be selected.
  • Positive connecting means such as snap-in connection means are particularly preferred because they can be released and closed in a simple manner by the application of a predefinable amount of force. Furthermore, such snap-in connection means have proven themselves particularly successful for plastics-containing materials, from which the first component and/or the second component can be produced.
  • the second component comprises an opening, which, in the joined state of the suction channel end part, forms a suction port, which communicates with the inlet and via which the fiber flight can be removed into the suction channel end part when a negative pressure is applied.
  • the separation of the suction port from the inlet by providing different components has proven to have the advantage that allowance can be made for different fiber types merely by exchanging the second component, which is designed as a cover element. It is thus possible to avoid the expensive replacement of a complete suction channel end part or the adjustment thereof by providing an adjustment mechanism having a correspondingly complex design.
  • the design according to the invention allows the suctioning to be adapted to different positions of the drafting system by varying the number of suction ports and/or the dimensions of the suction ports.
  • the second component can preferably have more than one opening, the openings forming, in the joined state of the suction channel end part, suction ports that communicate with the inlet or with an associated inlet of a plurality of inlets formed together with the first component.
  • the openings can accordingly be adapted in terms of their dimensions to the particular position of the suctioning and therefore can differ greatly from one another.
  • the first component can also have more than one inlet or a sufficiently large inlet for communication with the openings in question.
  • the suction channel end part can preferably have more than one second component each having at least one opening, each opening forming, in the joined state of the suction channel end part, a suction port that communicates with the inlet or with an associated inlet of a plurality of inlets formed together with the first component. It is therefore possible, if necessary, to exchange only the second component that has an opening arranged at a position at which a different opening cross-section is required for suitably removing the fiber flight when the fiber type to be processed is changed.
  • the suction channel end part can therefore be designed and arranged appropriately and positionally accurately depending on the requirements in the region of the drafting system.
  • the suction channel end part can be dimensioned suitably for applying suction air to at least two roller pairs of the drafting system, at least one suction port being associated with at least one roller of each roller pair.
  • the suction port is preferably associated with a bottom roller of the roller pair.
  • the suction port can be associated with a top roller of the roller pair by suitably positioning the suction channel end part in the region of the drafting system.
  • the suction channel end part can be fastened in the region of the drafting system in a stationarily exchangeable manner.
  • the suction channel end part can have a fastening means.
  • fastening means refers to a means that contributes to the fastening of the suction channel end part in the region of the drafting system.
  • the suction channel end part can preferably comprise a snap-in connection means, such as a snap-in hook or a snap-in hook receptacle, which interacts with an associated additional snap-in connection means provided in the region of the drafting system, in order to fasten the suction channel end part.
  • the suction channel end part can preferably have, as a fastening means, an exterior shape around which a flexible clip can at least partially reach in order to clamp the suction channel end part and hold it stationary.
  • the suction channel end part comprises a funnel, which is tapered towards the opening.
  • a funnel advantageously enables improved application of suction air to defined drafting system regions in order to remove the fiber flight.
  • the funnel can more preferably be designed as an insert, which can be exchangeably fastened in or at the opening.
  • fiber flight can be removed at defined positions in the region of the drafting system for different fiber types in a further improved manner. If, for example, a funnel has a defect, only the funnel in question has to be replaced.
  • the funnel can likewise be fastened at or in the associated opening in a variety of ways.
  • a snap-in connection can likewise be provided.
  • the funnel can be placed in the opening, in particular by means of a press fit.
  • such a suction channel end part can be produced by means a method in which a 3D printing method, a laser sintering method or a plastics injection-molding method has been used to produce at least one of the parts of the suction channel end part, such as, in particular, the first or second component or the funnel.
  • the suction channel end part can thus be produced economically and with small tolerances.
  • a drafting system which comprises at least two roller pairs for the defined drafting of a fed fiber band, a suction channel end part as described above being arranged in the region of the drafting system.
  • the fiber flight present in the region of the drafting system during operation can thus be removed efficiently in a manner adapted to the fiber type, whereby malfunctions due to fiber flight collecting on the roller pairs can be reduced.
  • the suction channel end part is preferably arranged at least with one opening centered with respect to one roller of an associated roller pair.
  • An arrangement centered in this way should be understood to mean positioning in such a way that, in the side view, the center of rotation of the roller spans an isosceles triangle together with the edge points of the opening which lie opposite one another, the axis of symmetry of the triangle running through the center point of the opening.
  • the centered arrangement of the suction port enables efficient removal of fiber flight in the region of the associated roller.
  • the suction channel end part preferably has a plurality of openings, each opening being associated with one roller of a roller pair, and each opening being centered with respect to the roller in question. This allows fiber flight to be removed efficiently across all the roller pairs of the drafting system.
  • FIG. 1 is a schematic perspective side view of a suction channel end part according to an embodiment example
  • FIG. 2 is a schematic perspective side view of a first component of the suction channel end part shown in FIG. 1 ,
  • FIG. 3 is a schematic perspective side view of a cover element of the suction channel end part shown in FIG. 1 ,
  • FIG. 4 is a schematic perspective side view of an insert of the suction channel end part shown in FIG. 1 ,
  • FIG. 5 is a schematic side view of an arrangement of the suction channel end part shown in FIG. 1 in the region of a drafting system according to an embodiment example.
  • FIG. 1 is a schematic perspective view of a suction channel end part 1 according to an embodiment example, which is composed of a plurality of parts.
  • the suction channel end part 1 comprises a first component 2 , which is designed as a base part, and a second component 3 , which is exchangeably connected to the first component 2 and is designed as a cover element.
  • FIG. 2 is a schematic perspective view of the first component 2 .
  • the first component 2 is tubular, with a longer extent along the axial tube axis than along its radial extent. According to this embodiment example, the first component 2 has such a longitudinal extent that suction air can be applied to associated rollers, either bottom rollers or top rollers, of all roller pairs of a drafting system that are provided for drafting a fiber band.
  • the first component 2 comprises an inlet 21 and an outlet 22 communicating with the inlet.
  • the inlet 21 is designed as a slot running in parallel with the axial tube axis.
  • the inlet 21 is bordered on its longitudinal sides by tongue-type guide elements 23 , which can be brought into engagement with complementary groove guide elements of the second component 3 in order to join the first component 2 and the second component 3 to one another.
  • the tongue-type guide elements 23 have an interruption 24 near the outlet 22 , below which interruption a first snap-in latch 25 for latching with a first fastening means 4 is arranged, said first fastening means retaining the suction channel end part 1 in the region of a drafting system. Radial fixing can thereby be reliably achieved.
  • a snap-in lug 27 is also provided on the end of the suction channel end part 1 opposite the outlet 22 , which snap-in lug runs in the direction of longitudinal extent of the suction channel end part 1 in order to latch with complementary second fastening means 5 (see FIG. 5 ).
  • the end of the tongue-type guide elements 23 near the outlet 22 has a snap-in receptacle 26 for latching with a second snap-in latch 32 , which is formed by the second component 3 and by means of which the first component 2 and the second component 3 are held stationary with respect to one another in the joined state.
  • the design of the first component 2 shown in FIG. 2 is a preferred variant, from which a person skilled in the art can certainly deviate within their abilities in the art depending on the requirements, without departing from the concept on which the invention is based.
  • the presented designs and arrangements of the interruptions 24 , the first snap-in latches 25 , the snap-in receptacles 26 and/or the snap-in lug 27 can be positioned on the first component 2 in a different location and/or in a different design depending on the requirements.
  • the interruptions 24 could be omitted entirely or could be provided at a different position along the tongue-type guide elements 23 .
  • the interruption has proven successful for simple installation of the suction channel end part 1 on the first fastening means 4 and its disassembly therefrom.
  • the first snap-in latches 25 and the snap-in receptacles 26 could also be arranged in a different location on the first component 2 , provided that the second component 3 is designed accordingly.
  • the first snap-in latch 25 could have a snap-in receptacle or snap-in lug that operatively connects to a complementary snap-in means on the fastening means 4 , in order to achieve the radial and axial fixing of the suction channel end part 1 in a combined way by means of a single fastening mechanism.
  • FIG. 3 is a schematic perspective view of the second component 3 .
  • the second component 3 has a plate-like design, having groove-type guide elements 31 , which are arranged on longitudinal sides and are provided for receiving and guiding the tongue-type guide elements 23 .
  • the second snap-in latches 32 for latching in the associated snap-in receptacles 26 are arranged at one end of the groove-type guide elements 31 .
  • the second component 3 has three openings 33 in total in the direction of its longitudinal extent, each opening being delimited by an edge 34 protruding relative to the top side.
  • the edge 34 internally comprises guide grooves 35 in the passage direction of the openings 33 , by means of which guide grooves an insert 36 that can be inserted into the opening 33 can be received, said insert being shown in a schematic perspective view in FIG. 4 .
  • the insert 36 is funnel-shaped, having an entry 38 and an exit 39 .
  • the opening width of the entry 38 is greater than the opening width of the exit 39 .
  • the exit 39 is complementary to the edge 34 and externally comprises guide ribs 37 for engaging in the internal guide grooves 35 .
  • the guide ribs can be provided on the interior of the edge 34 and the guide grooves can be provided on the exterior of the insert 36 .
  • edge 34 and the exit 39 are designed in such a way that the edge 34 can be inserted into the exit 39 .
  • the exit 39 and the edge 34 are designed to exchangeably retain the insert 36 by means of a clamping force or a press fit.
  • other fastening options such as clamping by means of a clamping screw, a bayonet coupling or the like can be provided.
  • the suction channel end part 1 is joined by bringing the tongue-type guide elements 23 into engagement with the groove-type guide elements 31 and by performing a subsequent relative motion in the direction of longitudinal extent of the suction channel end part 1 until the second snap-in latch 32 latches into the snap-in receptacle 26 . Disassembly is performed in the reverse order accordingly. Therefore, different second components 3 can be combined with the first component 2 in order to easily adequately adapt the suction channel end part 1 to different designs of a drafting system or different fiber types processed by means of the same drafting system. Likewise, differently designed first components 2 can be combined with a second component 3 .
  • the suction channel end part 1 provides a high level of variability and flexibility. Furthermore, individual parts can be readily replaced in the event of a defect.
  • the suction channel end part 1 or at least one of the parts thereof, such as the first component 2 , the second component 3 and/or the insert 36 , can be produced by means of a 3D printing method, a laser sintering method or a plastics injection-molding method depending on the requirements, taking into consideration the advantages inherent to these methods. An additional degree of freedom in the design of the suction channel end part 1 can thus be provided.
  • FIG. 5 is a schematic side view of a possible arrangement of the suction channel end part 1 in the region of a drafting system.
  • the drafting system shown purely schematically by means of roller pairs 6 , 7 and 8 in FIG. 5 comprises an input roller pair 6 , by means of which a fiber band is introduced into the drafting zone.
  • the input roller pair 6 has an input bottom roller 61 and an input top roller 62 .
  • the input roller pair 6 is followed, in the fiber band transport direction R, by a middle roller pair 7 , which comprises a middle bottom roller 71 and a middle top roller 72 .
  • the middle roller pair is followed, in the fiber band transport direction, by an output roller pair 8 , which has an output roller 81 and an output roller 82 .
  • Drafting zones for different drafting of the fiber band passing through are formed between the individual roller pairs 6 , 7 , 8 in a known way, in that roller pairs arranged one downstream of the other rotate at different rotational speeds from one another during operation of the drafting system.
  • the suction channel end part 1 having a number of openings that corresponds to the number of roller pairs 6 , 7 , 8 , is arranged below the roller pairs 6 , 7 , 8 .
  • the openings 33 are at the same distance in the fiber band transport direction R as the centers of rotation of the associated bottom rollers 61 , 71 , 81 .
  • the arrangement is shown centered, according to this embodiment example.
  • the centered arrangement is clear because, in the side view shown, in particular the center of rotation of the bottom roller 81 spans an isosceles triangle D together with the edge points of the insert 36 or of the opening 33 which lie opposite one another, the axis of symmetry S of said isosceles triangle running through the center point of the insert 36 or of the opening 33 .
  • this center arrangement is provided in the same way for the arrangement of the openings 33 that lie opposite the middle bottom roller 71 and the input bottom roller 61 .
  • the suction channel end part 1 is held stationary in the region of the drafting system by means of two fastening means 4 , 5 .
  • the first fastening means 4 is designed as a clip that reaches around the outer periphery of the suction channel end part 1 and with which the first snap-in latch 25 provided on the suction channel end part 1 engages.
  • the first fastening means 4 has a fixing element 41 , which is designed as a snap-in latch and can be fixed in the region of the drafting system on a support of the roller pairs, on a support of the drafting system or on a frame portion of the workstation of the textile machine by means of a complementary element.
  • the second fastening means 5 is arranged downstream of the output roller pair 8 in the fiber band transport direction in the region of the drafting system and has a snap-in receptacle (not shown), in which the snap-in lug 27 engages in the installed state.
  • the arrangement of the suction channel end part 1 allows fiber flight arising in the region of the roller pairs 6 , 7 , 8 to be reliably and efficiently removed during operation of the drafting system.
  • the fiber flight is sucked via the funnel-shaped opening of the insert 36 into the opening 33 in the second component 3 by means of a suction flow, as a result of a negative pressure in the suction channel end part 1 , and, after first passing through the inlet 21 of the first component 2 , is removed through the outlet 22 .
  • the outlet 22 of the first component 2 is designed as a hose connection element for connecting a negative-pressure hose, by means of which a negative-pressure flow can be introduced into the suction channel end part 1 by applying a negative pressure or, if necessary, a positive-pressure flow can be introduced into the suction channel end part by applying a positive pressure.
  • a positive-pressure flow that can be introduced has the advantage that the suction channel end part 1 and/or the associated rollers can be blown clear or freed of fiber flight as necessary.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
US16/856,977 2019-04-25 2020-04-23 Suction channel end part, production method and drafting system comprising such a suction channel end part Pending US20200340149A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102019110731.8 2019-04-25
DE102019110731.8A DE102019110731A1 (de) 2019-04-25 2019-04-25 Saugkanalendteil, Herstellverfahren und Streckwerk umfassend ein solches Saugkanalendteil

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US20200340149A1 true US20200340149A1 (en) 2020-10-29

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US16/856,977 Pending US20200340149A1 (en) 2019-04-25 2020-04-23 Suction channel end part, production method and drafting system comprising such a suction channel end part

Country Status (7)

Country Link
US (1) US20200340149A1 (de)
EP (1) EP3730683A1 (de)
JP (1) JP7431651B2 (de)
CN (1) CN111850752B (de)
BR (1) BR102020008027A8 (de)
DE (1) DE102019110731A1 (de)
MX (1) MX2020004281A (de)

Citations (2)

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EP2607531A1 (de) * 2011-12-24 2013-06-26 Oerlikon Textile GmbH & Co. KG Vorspinnmaschine
US10125934B1 (en) * 2018-03-21 2018-11-13 Shenzhen Okt Lighting Co., Ltd. T-Grid LED lighting system with insertedly coupled illumination assembly

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US2890563A (en) * 1955-08-31 1959-06-16 Seress George Pneumatic spinning frame cleaner
CH659961A5 (de) * 1983-07-06 1987-03-13 Galipag Absaugeinrichtung.
DE19923576A1 (de) * 1999-05-21 2000-11-23 Riebag Riesaer Beteiligungs Ag Kämmmaschine mit mehreren Kämmköpfen
DE10311826A1 (de) * 2003-03-13 2004-09-23 Wilhelm Stahlecker Gmbh Vorrichtung zum Herstellen eines gesponnenen Fadens
CN100491746C (zh) * 2006-09-04 2009-05-27 汪京涛 气体喷射式负压吸气装置
JP2013079478A (ja) * 2011-09-21 2013-05-02 Murata Mach Ltd ドラフト装置、紡績ユニット及び紡績機
CN102443897A (zh) * 2011-09-28 2012-05-09 吴江市联航纺织有限公司 带混合器的吸尘装置
CH705843A1 (de) * 2011-12-07 2013-06-14 Rieter Ag Maschf Absaugvorrichtung für eine Spinnmaschine.
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JP2016102267A (ja) * 2014-11-27 2016-06-02 村田機械株式会社 繊維回収装置、ドラフト装置及び紡績機
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EP2607531A1 (de) * 2011-12-24 2013-06-26 Oerlikon Textile GmbH & Co. KG Vorspinnmaschine
US10125934B1 (en) * 2018-03-21 2018-11-13 Shenzhen Okt Lighting Co., Ltd. T-Grid LED lighting system with insertedly coupled illumination assembly

Non-Patent Citations (1)

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Title
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Also Published As

Publication number Publication date
DE102019110731A1 (de) 2020-10-29
CN111850752A (zh) 2020-10-30
JP2020180422A (ja) 2020-11-05
BR102020008027A8 (pt) 2023-10-03
EP3730683A1 (de) 2020-10-28
BR102020008027A2 (pt) 2021-02-02
MX2020004281A (es) 2020-11-06
JP7431651B2 (ja) 2024-02-15
CN111850752B (zh) 2023-08-18

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