EP3461775A1 - Dispositif de mise en place d'un fil sur un poste de travail d'une machine textile doté d'une buse d'aspiration et d'un organe d'alimentation - Google Patents

Dispositif de mise en place d'un fil sur un poste de travail d'une machine textile doté d'une buse d'aspiration et d'un organe d'alimentation Download PDF

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Publication number
EP3461775A1
EP3461775A1 EP18198069.9A EP18198069A EP3461775A1 EP 3461775 A1 EP3461775 A1 EP 3461775A1 EP 18198069 A EP18198069 A EP 18198069A EP 3461775 A1 EP3461775 A1 EP 3461775A1
Authority
EP
European Patent Office
Prior art keywords
thread
suction nozzle
inlet opening
thread guide
guide element
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
EP18198069.9A
Other languages
German (de)
English (en)
Other versions
EP3461775B1 (fr
Inventor
Mario Maleck
Robert Hagl
Thomas Gruber
Robin Wein
Christian Kettner
Bernd Bahlmann
Romeo Pohn
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Maschinenfabrik Rieter AG
Original Assignee
Maschinenfabrik Rieter AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Maschinenfabrik Rieter AG filed Critical Maschinenfabrik Rieter AG
Publication of EP3461775A1 publication Critical patent/EP3461775A1/fr
Application granted granted Critical
Publication of EP3461775B1 publication Critical patent/EP3461775B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H15/00—Piecing arrangements ; Automatic end-finding, e.g. by suction and reverse package rotation; Devices for temporarily storing yarn during piecing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H67/00—Replacing or removing cores, receptacles, or completed packages at paying-out, winding, or depositing stations
    • B65H67/08—Automatic end-finding and material-interconnecting arrangements
    • B65H67/081—Automatic end-finding and material-interconnecting arrangements acting after interruption of the winding process, e.g. yarn breakage, yarn cut or package replacement
    • B65H67/085—Automatic end-finding and material-interconnecting arrangements acting after interruption of the winding process, e.g. yarn breakage, yarn cut or package replacement end-finding at the take-up package, e.g. by suction and reverse package rotation
    • 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
    • D01H1/14—Details
    • D01H1/20—Driving or stopping arrangements
    • D01H1/22—Driving or stopping arrangements for rollers of drafting machines; Roller speed control
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/30—Handled filamentary material
    • B65H2701/31—Textiles threads or artificial strands of filaments
    • 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
    • D01H4/48—Piecing arrangements; Control therefor

Definitions

  • the present invention relates to a device for applying a thread to a workstation of a textile machine with a suction nozzle for receiving a yarn end of the yarn from a spool, wherein the suction nozzle has a suction port, a suction channel and an inlet opening for the thread.
  • the apparatus further comprises a feeder element movably arranged opposite the suction nozzle for forming a thread loop from the thread end received by the suction nozzle.
  • the feeder element has a cover element for closing the inlet opening of the suction nozzle and a thread guide element and is between a first position in which the thread guide element is located within the suction channel and the lid member closes the inlet opening of the suction nozzle, and a second position in which the thread guide element itself is located outside of the suction channel and the lid member releases the inlet opening of the suction nozzle, reciprocally movable.
  • the DE 3 515 765 A1 shows a suction nozzle, which is arranged in a movable maintenance device. After the thread has been successfully sucked in, the suction nozzle is removed a certain distance from the surface of the bobbin, so that the drawn-in thread is stretched between the suction nozzle and the bobbin is. Subsequently, a likewise arranged in the movable maintenance device Zubringerorgan is delivered to the thread, which detects the tensioned thread and passes to form a thread loop for attachment to another handling organ.
  • each of the jobs has a workstation's own suction nozzle.
  • Such a textile machine is in the EP 1 283 288 A2 described.
  • a pivotally mounted suction nozzle is provided at each of the jobs, which receives the yarn from the bobbin surface in a first position and is pivoted after successful sucking the yarn end in a second position to deliver the sucked yarn end further handling organs of the job.
  • the swiveling suction nozzle has a comparatively high space requirement and is structurally complex.
  • a textile machine with a working own suction nozzle which is fixedly arranged at the workplace.
  • the stationary suction nozzle is assigned a movable feeder element.
  • the feeder element has a Fadenleit Scheme, which is introduced before sucking the thread end in a suction channel of the suction nozzle, so that the thread end at the same time enters the Saugdüse when sucking into the Saugleit Kunststoff the feeder. After successful recording of the thread end, the feeder can be pivoted to deliver the thread end to form a thread loop the other handling organ.
  • the suction nozzle has an inlet opening for the Fadenleit Scheme of Zubringerorgans and the lead out of the sucked thread from the suction nozzle. During the search of the thread end on the bobbin surface, this entrance opening must be sealed.
  • the feeder element has for this purpose a cover element.
  • Object of the present invention is to propose a device for applying a thread, which allows a reliable sealing of the inlet opening of the suction nozzle during the thread search.
  • An apparatus for applying a thread to a work station of a textile machine comprises a suction nozzle for receiving a yarn end of the yarn from a spool, wherein the suction nozzle has a suction port, a suction channel and an inlet opening for the thread. Furthermore, the device has a movable relative to the suction nozzle arranged Zubringerorgan for forming a thread loop from the recorded from the suction nozzle yarn end, wherein the Zubringerorgan has a cover member for closing the inlet opening of the suction nozzle and a yarn guide element.
  • the feeder element is between a first position in which the thread guide element is located within the suction channel and the lid member closes the inlet opening of the suction nozzle, and a second position in which the thread guide element is located outside the suction channel and the lid member releases the inlet opening of the suction nozzle out and movable.
  • the thread guide element has an open contour.
  • the thread guide element has an open contour and is thus attached only at one of the two ends of the open contour on the feeder element or at only one point on the cover element of the feeder element, the cover element undergoes only a slight stiffening by the thread guide element.
  • the flexibility of the cover element is increased, so that it can better adapt to the surface of the suction nozzle in the region of the inlet opening.
  • the areas of the cover element, which are not in communication with the thread guide element can thereby adapt particularly well to the contour of the inlet opening and seal it better.
  • the flow inside the suction nozzle is less affected by the open contour of the thread guide element, which assists the safe suction of the thread end and leads to a reduced energy consumption.
  • a material saving can be achieved.
  • the cover element consists of a plastic material.
  • the cover element can be made particularly flexible, so that it can also adapt particularly well to the contour of the suction nozzle and thus can better seal the inlet opening.
  • the suction nozzle is made of a harder material than the cover element or the cover element is made of a softer material than the suction nozzle, so that solely due to the pressure prevailing in the suction nozzle negative pressure which attracts the softer cover element to the suction nozzle The sealing can be improved.
  • the lid element is likewise bent in its longitudinal direction.
  • the longitudinal direction of the inlet opening is understood to be the direction of the largest dimension of the inlet opening.
  • the direction of the largest dimension of the cover element is understood by the longitudinal direction of the cover element. Due to the curved contour, in particular in the area of the two longitudinal ends of the cover element or in the region of the two longitudinal ends of the inlet opening, the seal can be further improved.
  • the inlet opening of the suction nozzle and the cover element in each case at least one, preferably in each case at least have two opposite, beveled edge / -n, which each form a sealing surface.
  • a defined contact area between the suction nozzle and the cover element is created, which supports the sealing of the inlet opening due to the bevelled shape.
  • at least the two extending in the longitudinal direction of the inlet opening edges of the inlet opening and the lid member are chamfered, in the case of a rectangular inlet opening particularly preferably all four the inlet opening bounding edges. It is also conceivable, however, depending on the shape of the inlet mouth and the lid member, only one to provide the inlet opening or the lid member circumferential, beveled edge.
  • the cover element is provided with a sealing lip on its side facing the thread guide element, that is to say on the side facing the suction channel of the suction nozzle in the first position of the feeder element.
  • the sealing lip is made of a flexible plastic material.
  • the sealing lip thereby advantageously allows a seal even with an uneven sealing gap between the suction nozzle and the cover element.
  • a flexible plastic material for example, a silicone material or an elastomeric material can be used.
  • the cover element has on its side facing the thread guide element at least one holding element, preferably a plurality of spaced, holding elements.
  • the sealing lip is merely attached to the holding element or the holding elements. The fact that the sealing lip is merely loosely attached, this is also slightly sucked during the suction of the thread end by the negative pressure in the suction nozzle, resulting in an improved sealing effect. It is thus achieved a self-sealing construction of the lid member.
  • the thread guide element is mounted eccentrically relative to the longitudinal direction of the cover element, in particular on or in the region of a longitudinal end of the cover element, on the cover element.
  • the sealing in a central region of the cover element between the two longitudinal ends is thereby facilitated, in particular in the case of a curved cover element and a curved contour of the suction nozzle.
  • the thread guide element consists of a sheet metal material, in particular a Fabricblech- or aluminum sheet material.
  • the thread guide element can be produced in a particularly simple manner by punching or lasers.
  • the fiber guiding element is made entirely or partially (i.e., one or more portions of the fiber guiding element) from a ceramic material.
  • a ceramic material For example, it would be conceivable to produce the fiber guiding element or corresponding sections thereof by a 3D printing method and then to provide it with a ceramic layer by sintering.
  • the thread guide element is provided with a coating and / or polished.
  • a thread guide element made of an aluminum sheet material may be provided with an aluminum oxide layer, or a thread guide element made of a steel sheet material may be provided with a DLC coating (diamond-like carbon).
  • the thread guide element is provided with a reibwertmindernden coating.
  • the wear of the thread guide element can be counteracted by friction-reducing, but wear-resistant coatings. It is therefore also advantageous if the thread guide element polished is. As a result, the coefficient of friction of the thread guide element and thus also a wear of the same can be reduced.
  • the thread guide element has at least one first thread guide edge with a first fixing contour for a thread piece to be removed and at least one second thread guide edge with a second fixing contour for a piece of thread to be applied.
  • FIG. 1 shows a schematic side view of a workplace 2 a textile machine 1 in a sectional view.
  • the textile machine 1 is presently designed as a spinning machine and has as a yarn feeding device 3, a spinning device in which a yarn 4 is produced.
  • the thread 4 is withdrawn by means of two take-off rolls 5 from the yarn feeding device 3 and fed to a winding device 6, where it is wound onto a bobbin 7.
  • the textile machine 1 is not designed as a spinning machine, but as a winder.
  • the workstation 2 as a yarn feeding device 3 on a delivery reel, from which the thread 4 in turn withdrawn and wound on a bobbin 7 as described above.
  • the workstation 2 of the textile machine 1 shown in the present case is furthermore designed as a self-sufficient workstation 2 which, after interrupting production, is capable of forming a thread end 4a (see FIG FIG. 2 ) independently.
  • the thread end 4a is returned back to the spinning device, where this is reconnected with other fibers to be incorporated into the thread.
  • the workstation 2 shown here is provided for this purpose with a device 16 for applying a thread 4.
  • the device 16 for applying the thread 4 in this case has a suction nozzle 8, by means of which an accumulated on the coil 7 yarn end 4a (see FIG.
  • the suction nozzle 8 In order to pressurize the suction channel 9 with negative pressure, the suction nozzle 8 is connected in a conventional manner with a vacuum channel 10. For sucking the thread end 4a, the suction nozzle 8 has a suction port 11. Furthermore, the device 16 includes a feeder element 13, by means of which the yarn end 4a received by the suction nozzle to form a thread loop (see FIG. 3 ) can be delivered to a Ansetzorgan 17 or other handling organ of the job 2 or directly the yarn feeding device 3 can be supplied.
  • the feeder element 13 has for this purpose a movable, in particular pivotable, mounted lever 24, which is provided with a thread guide element 15, in which the thread end 4 a of the suction nozzle 8 can be accommodated.
  • the movement of the feeder element 13 is symbolized here by the arrow and the dashed, second representation of the feeder element 13.
  • the suction nozzle is arranged fixedly at the workstation 2, with the yarn 4 passing through the suction nozzle 8 during the normal operation of the workstation 2.
  • the thread 4 enters through an inlet opening 12 in the suction nozzle 8 and leaves it through the intake port 11 to close the inlet opening 12 of the Suction nozzle 8, the feeder element 13, a cover member 14.
  • the feeder element 13 is between a first position I (see FIG. 2 ) for taking over the thread end 4a of the suction nozzle 8 and a second position II for forming the thread loop and for passing the thread end 4a movable.
  • the thread guide element 15 is outside the suction channel 9 of the suction nozzle 8 and the lid member 14 releases the inlet opening 12 of the suction nozzle 8, so that the thread 4 can pass through the suction nozzle 8 during production.
  • FIG. 2 now shows the job 2 of the textile machine 1 in a situation in which after an interruption of production, the thread end 4a has just been sucked into the suction nozzle 8.
  • the feeder element 13 is first moved to its first position I, pivoted in the present case. In this position I is the thread guide member 15 within the suction channel 9 of the suction nozzle 8 and the lid member 14 closes the inlet opening 12 of the suction nozzle 8.
  • the suction nozzle 8 can now be applied via the vacuum channel 10 with negative pressure and the yarn end 4a on the surface of the coil 7 visit.
  • FIG. 3 finally shows a further situation of the job 2 of the textile machine 1, in which the sucked in thread end 4a is delivered to the Ansetzorgan 17 to form a thread loop present.
  • the feeder element 13 is for this purpose from its first position I (see FIG. 2 ) is moved back again into its second position II, in which the cover element 14 releases the inlet opening 12 and the thread guide element 15 is located outside the suction channel 9.
  • a thread piece 4b to be attached and a thread piece 4c to be removed have now been formed from the original thread end 4a.
  • the two thread pieces 4b and 4c can now be separated, for example, by the Ansetzorgan 17, so that the thread piece 4b of the yarn feeding device 3 can be supplied for piecing and the thread piece 4c sucked into the vacuum channel and can be disposed of about this.
  • the thread guide element 15 is no longer designed as a closed contour in the form of an eyelet, but as an open contour.
  • FIG. 4 shown which shows the device 16 with the suction nozzle 8 with the suction channel 9 and the feeder element 13 in a schematic cross-sectional view.
  • the feeder element 13 is shown here in its first position I, in which the cover element 14 closes the inlet opening 12 of the suction nozzle 8 and the thread guide element 15 is located in the suction channel 9.
  • the thread guide element 15 is arranged off-center relative to the longitudinal direction of the cover element 14.
  • the thread guide element 15 is arranged in the region of a longitudinal end 14a of the cover element 14.
  • the cover element 14 can in particular be attached to the other, the first longitudinal end 14 a, on which the thread guide element 15 is arranged to adapt flexible longitudinal end 14 a to the inlet opening 12.
  • FIG. 4 to take a first Fadenleitkante 20, at which when clamping the thread loop (see FIG. 3 ) the thread piece 4c to be removed slides along until finally it is fixed to a first fixing contour 21.
  • the thread piece 4b to be attached slides along a second thread guide edge 22 during the further tightening of the thread loop until finally it is fixed to a second fixing contour 23.
  • FIG. 5 shows another embodiment of a device 16 for applying a yarn end 4a, wherein the lid member 14 is bent in its longitudinal direction.
  • the suction nozzle 8 at least the region of the suction nozzle 8 surrounding the inlet opening 12 is bent in its longitudinal direction.
  • the longitudinal direction corresponds to the largest dimension of the slot-shaped inlet opening 12.
  • the sealing of the inlet opening 12 through the lid member 14 is thereby facilitated.
  • a sealing lip 18 is shown, which is mounted on the cover member 14 and the sealing of the inlet opening 12 also facilitates.
  • the lid member 14 and the sealing lip 18 are made of a plastic material, they are particularly flexible, so that only by the suction of the lid member 14 with the sealing lip 18 by the negative pressure, an improved seal can be achieved.
  • An increased contact pressure on the cover element 14 eg. By a drive the feeder element 13 is not required.
  • the sealing lip 18 is arranged on the thread guiding element 15 facing side of the lid member 14 and thus on the inside of the lid member 14 and communicates with the suction channel 9 and thus also with the prevailing negative pressure during suction in combination.
  • the thread guide element 15 facing away from the side of the lid member 14 to the outside of the suction nozzle. 8
  • the cover element 14 in the present case has a plurality of holding elements 19 on which the sealing lip 18 is attached.
  • the holding elements 19 are spaced apart from each other, so that the sealing lip 18 is not fully connected to the lid member 14.
  • the sealing lip 18 can thus move relative to the cover element 14, which facilitates the suction of the sealing lip 18 by the vacuum prevailing inside the suction channel 9.
  • FIG. 6 shows a plan view of the inside or the thread guide element 15 facing side of the lid member 14 to which the sealing lip 18 is applied.
  • the holding elements 19 are arranged according to the present illustration in two rows, in this case above and below the thread guide element 15. It would also be conceivable, however, to provide only a series of retaining elements 19, which then, based on the representation of FIG. 6 , Left and right of the thread guide element 15 would be arranged. Furthermore, it would of course also be conceivable to provide a total of only 2 or 3 holding elements at different locations of the cover element 14.
  • FIG. 7 shows a schematic, broken longitudinal sectional view of a device 16 for applying a yarn end 4a according to a further alternative embodiment.
  • the inlet opening 12 of the suction nozzle 8 in the present case two opposing, in the longitudinal direction of the inlet opening 12 extending, bevelled edges. These each form one Sealing surface 25 for the cover member 14 from.
  • the two edges extending in the longitudinal direction of the inlet opening 12 are chamfered and form sealing surfaces 25.
  • all of the inlet opening 12 bounding edges or all edges of the lid member 14 are bevelled or provided with a circumferential, beveled edge in order to achieve a particularly good seal. It is understood that the edges of the lid member 14 are each bevelled corresponding to the edges of the inlet opening 12, so that the inlet opening 12 are designed as a positive mold and the cover member 14 in accordance with a negative mold.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Replacing, Conveying, And Pick-Finding For Filamentary Materials (AREA)
EP18198069.9A 2017-10-02 2018-10-02 Dispositif de mise en place d'un fil sur un poste de travail d'une machine textile doté d'une buse d'aspiration et d'un organe d'alimentation Active EP3461775B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102017122851.9A DE102017122851A1 (de) 2017-10-02 2017-10-02 Vorrichtung zum Ansetzen eines Fadens an einer Arbeitsstelle einer Textilmaschine mit einer Saugdüse und mit einem Zubringerorgan

Publications (2)

Publication Number Publication Date
EP3461775A1 true EP3461775A1 (fr) 2019-04-03
EP3461775B1 EP3461775B1 (fr) 2020-08-19

Family

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Family Applications (1)

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EP18198069.9A Active EP3461775B1 (fr) 2017-10-02 2018-10-02 Dispositif de mise en place d'un fil sur un poste de travail d'une machine textile doté d'une buse d'aspiration et d'un organe d'alimentation

Country Status (4)

Country Link
US (1) US10767286B2 (fr)
EP (1) EP3461775B1 (fr)
CN (1) CN109179084B (fr)
DE (1) DE102017122851A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3546406A1 (fr) * 2018-03-14 2019-10-02 Maschinenfabrik Rieter AG Procédé de formation d'une boucle de fil et de séparation d'une section de fil à utiliser et d'une section de fil à évacuer, unité de rouleaux presseurs ainsi que buse d'aspiration

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3859061A1 (fr) * 2020-01-30 2021-08-04 Saurer Intelligent Technology AG Dispositif de réception d'une mèche de fibres

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EP0691300A1 (fr) * 1994-07-07 1996-01-10 W. SCHLAFHORST AG & CO. Dispositif pour relier des fils pour machines textiles fabriquant des paquets à spires croisées
DE19927877A1 (de) * 1999-06-18 2000-12-21 Schlafhorst & Co W Vorrichtung zum automatischen Herstellen von Fadenverbindungen an einer Spulstelle
EP2987756A1 (fr) * 2014-08-21 2016-02-24 Saurer Germany GmbH & Co. KG Poste de travail d'une machine textile fabriquant des bobines croisées
DE102015005393A1 (de) * 2015-04-28 2016-11-03 Saurer Germany Gmbh & Co. Kg Arbeitsstelle einer Auflaufspulen herstellenden Textilmaschine
DE102015112660A1 (de) * 2015-07-31 2017-02-02 Rieter Ingolstadt Gmbh Verfahren zum Absaugen eines Fadens von einer Spule und entsprechende Vorrichtung

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3546406A1 (fr) * 2018-03-14 2019-10-02 Maschinenfabrik Rieter AG Procédé de formation d'une boucle de fil et de séparation d'une section de fil à utiliser et d'une section de fil à évacuer, unité de rouleaux presseurs ainsi que buse d'aspiration

Also Published As

Publication number Publication date
DE102017122851A1 (de) 2019-04-04
EP3461775B1 (fr) 2020-08-19
CN109179084A (zh) 2019-01-11
CN109179084B (zh) 2021-11-02
US20190100861A1 (en) 2019-04-04
US10767286B2 (en) 2020-09-08

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