EP3748054A1 - Kippvorrichtung für eine fadenführung für eine automatische fadenanspinnanordnung - Google Patents

Kippvorrichtung für eine fadenführung für eine automatische fadenanspinnanordnung Download PDF

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Publication number
EP3748054A1
EP3748054A1 EP20177969.1A EP20177969A EP3748054A1 EP 3748054 A1 EP3748054 A1 EP 3748054A1 EP 20177969 A EP20177969 A EP 20177969A EP 3748054 A1 EP3748054 A1 EP 3748054A1
Authority
EP
European Patent Office
Prior art keywords
yarn
lappet
piecing
suction bell
automatic
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
EP20177969.1A
Other languages
English (en)
French (fr)
Other versions
EP3748054B1 (de
Inventor
Jeganathan Pasupathy
Masthigoundenpathy Giriraj Deepan Marudachalam
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.)
Lakshmi Machine Works Ltd
Original Assignee
Lakshmi Machine Works Ltd
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Filing date
Publication date
Application filed by Lakshmi Machine Works Ltd filed Critical Lakshmi Machine Works Ltd
Publication of EP3748054A1 publication Critical patent/EP3748054A1/de
Application granted granted Critical
Publication of EP3748054B1 publication Critical patent/EP3748054B1/de
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

Definitions

  • the present invention relates to textile spinning machines.
  • the present invention relates to an automatic yarn piecing arrangement for broken yarn ends in the textile ring spinning machine.
  • the present invention deals with a lappet tilting apparatus in the automatic piecing assembly of textile ring spinning machines.
  • ring spinning machines are generally employed for spinning of fibres, such as cotton, flax or wool, to produce a yarn.
  • Fiber material may be supplied to the ring spinning machines in the form of rovings.
  • the ring spinning machine draws the rovings to the desired degree of fineness and imparts sufficient twist, and finally forms a continuous yarn, which is then wound onto the bobbins for storage.
  • Yarn breakage is an unavoidable plight in the ring spinning machines during the spinning operation.
  • the piecing of the broken yarns is required for efficient and continuous operation of the ring spinning machine, and the process is called as yarn piecing.
  • Yarn piecing is a manual process in which the broken yarns are joined/ assembled. Hence, this process aids in restarting the yarn spinning sequence at a swift rate.
  • Yarn piecing process may be crucial in yarn spinning operation that determines the rate of productivity.
  • automatic piecing assembly With the advent of modern technology, automatic piecing assembly have been employed in the spinning mills over the manual piecing operation.
  • automatic piecing assemblies are mounted on guide rails provided in vicinity of frame of the ring spinning machines.
  • the automatic piecing assemblies may employ automatic piecing equipment like robotic arms or may be configured to accommodate an operator for piecing.
  • Said automatic piecing assemblies may traverse over the guide rails throughout the length of a frame of the ring spinning machine and carryout piecing operation at required spinning stations.
  • the piecing assemblies may be mounted on a platform, which traverse on the mill floor for carrying the piecing assembly throughout the length of the ring spinning machine for performing piecing operations.
  • automatic piecing assembly comprises plurality of modules for yarn pickup from bobbin, yarn insertion into the traveller and yarn piecing at drafting and the like.
  • Each spinning stations of a ring spinning machine comprises roving supply package, drafting unit, broken yarn collection tube, yarn breakage detection arrangement, yarn guide hook or lappet, balloon controller ring, ring-traveller assembly, yarn bobbin fitted on the rotating spindle, spindle driving assembly etc.
  • the delivered yarn from the drafting unit travels through lappet hook, balloon controller ring and then through ring traveller before winding on to the rotating bobbin.
  • the broken end of yarn from the bobbin has to be taken off up to the drafting unit for piecing it with delivery fibre federation.
  • Plurality of lappet hooks are serially mounted on a lappet rod of a spinning machine in such a way that one lappet hook for each spinning station.
  • Said lappet hook is a small convolute shaped steel pin with an eyelet located at the center thereof. The yarn passes through said eyelet of the lappet hook and guided properly to maintain a fixed path. Before piecing operation takes place, inserting the yarn into the lappet hook eyelet is a tricky process for an Automatic piecing unit because of the convolute hook construction in the lappet.
  • An object of the present invention is to provide a lappet tilting apparatus in the yarn pickup module of an automatic yarn piecing assembly of textile ring spinning machines.
  • Another object of the present invention is to provide a lappet tilting apparatus that offers hassle-free yarn insertion into the lappet hook eyelet after tail yarn pickup from the bobbin.
  • an automatic yarn piecing assembly for a ring spinning machine comprises a yarn pickup module mounted on a vertical column such that said yarn pickup module is capable of sliding on the vertical column in both vertical and horizontal directions.
  • a suction bell unit is mounted on the yarn pickup module that has an elbow tubular arrangement having a first end and a second end, wherein the first end is connected to a vacuum source, and the second end has a suction bell.
  • the elbow tubular arrangement is flexible to move up and down in vertical direction.
  • the piecing assembly comprises a lappet tilting apparatus provided on the second end of the elbow tubular arrangement such that said lappet tilting apparatus encircles the suction bell and capable of sliding over the elbow tubular arrangement and makes impermanent slippery contact with a lappet hook of the ring spinning machine during tail yarn pickup in a piecing operation.
  • a method of piecing a tail yarn by an automatic yarn piecing assembly in a textile ring spinning machine comprises an initial step of moving second end of an elbow tubular arrangement towards the yarn path by providing horizontal and vertical movement to a yarn pickup module and vertical movement to the elbow tubular arrangement, such that a lappet tilting apparatus hits a lappet hook and makes it to swivel away from a home position.
  • the tail yarn from a bobbin is picked by a suction pull into an open mouth of the suction bell in the elbow tubular arrangement, wherein the tail yarn is picked on the bobbin anywhere in the chase length from bottom to top.
  • said elbow tubular arrangement and the associated lappet tilting apparatus is moved vertically up in the yarn path such that the lappet hook falls back to the home position, thereby the yarn is inserted into the eyelet of the lappet hook loop.
  • the elbow tubular arrangement carrying yarn is further moved upwards to enable automatic piecing operation in a textile ring spinning machine.
  • a ring spinning frame (1) the supply fibre federation or roving (2) is spun into yarn (3) by way of linear stretching using a drafting unit (4).
  • the produced yarn (3) is guided through a lappet hook (5), a balloon controller ring (6), a ring-traveller assembly (not shown) and subsequently wound on to a ring yarn bobbin (7) before further processing.
  • a ring spinning frame (1) during yarn breakage, there is a need for automatic yarn piecing to continue the ring spinning operation that is provided by an automatic yarn piecing assembly (8) for textile ring spinning machines to facilitate automatic piecing operation.
  • the automatic yarn piecing assembly (8) in a ring spinning frame (1) comprises a yarn pickup module (9) mounted on a vertical column.
  • the yarn pickup module (9) is configured to slide in both horizontal and vertical directions.
  • the yarn pickup module (9) has a suction bell unit mounted therein.
  • the suction bell unit has an elbow tubular arrangement (10) that has a first end and a second end. The first end is connected to a vacuum source (not shown), whereas the second end hangs freely. This free end forms a suction bell (11).
  • the suction bell (11) is an open mouth configuration defined at the second end of the elbow tubular arrangement (10). Accordingly, the first end and the second end are also defined as fixed end and free end respectively.
  • the elbow tubular arrangement (10) is flexible enough to move up and down in vertical direction. Further, said free end of elbow tubular arrangement (10) is provided with a lappet tilting apparatus (12) such that said lappet tilting apparatus (12) encircles the suction bell (11) and can slide over the elbow tubular arrangement (10) and makes impermanent slippery contact with a lappet hook (5) of ring spinning machine (1) during tail yarn pickup in a piecing operation. That is, lappet tilting apparatus (12) can be freely slidable in up and down direction over the suction bell (11) on the elbow tubular arrangement (10) as shown by arrow in the Figure 2 of the present invention.
  • the lappet tilting apparatus (12) has an upper portion and a lower portion that are connected and positioned along the common axis.
  • the upper portion has a tubular structure.
  • the lower portion has a configuration showing frustum of a hollow solid having a slant external surface.
  • the hollow solid can be a hollow cone or a pyramid.
  • the automatic yarn piecing assembly (8) further comprises a driving means coupled to the yarn pickup module (9) for moving the yarn pickup module (9) vertically up and down and horizontally far and away.
  • the driving means can be a pneumatic driving unit, or a hydraulic driving unit having piston and cylinder arrangement with actuators.
  • the drive means can also comprise of screw rod, cylinder and all types of actuating means.
  • the yarn piecing assembly (8) includes a control apparatus functionally connected with driving means comprising a control unit coupled with a plurality of sensors and stoppers for precisely controlling the movement of moving yarn pickup module (9) so as to move the suction bell (11) vertically up and down.
  • the automatic yarn piecing assembly (8) is positioned away from the lappet hook (5).
  • the yarn pickup module (9) of the suction bell unit is moved towards the yarn path by providing horizontal and vertical movement to the yarn pickup module (9) and vertical movement to the elbow tubular arrangement (10) such that the lappet tilting apparatus (12) hits a lappet hook (5) and makes it to swivel away from its home position wherein the swivelling action is supported by the lappet rod (13) mounted in the ring spinning machine (1).
  • the suction bell (11) accesses the yarn axis to suck the tail yarn (3) from bobbin (7).
  • Figure 4 illustrates the yarn (3) pickup for another chase length position at the top of the yarn bobbin (7). While the yarn (3) breaks at top chase wound length of the bobbin (7), it is difficult for the suction bell (11) to enter near the bobbin (7) because of the size of the tilting apparatus (12) which cannot penetrate through the balloon controller ring (6).
  • the bottom face of lappet tilting apparatus (12) seats over above the balloon controller ring (6) while the suction bell (11) moves down and penetrates further to reach the position above the yarn bobbin (7).
  • the lappet tilting apparatus (12) freely slides over the suction bell (11) on the elbow tubular arrangement (10).
  • the suction bell (11) moves up from the yarn bobbin (7) after sucking the yarn (3) and engages with the tilting apparatus (12) that is resting over the balloon controller ring (6) and then the yarn pickup module (9) along with the suction bell (11) and lappet tilting apparatus (12) moves up further as a whole and carry the yarn (3) upwards further for piecing operation.
  • the lappet tilting apparatus (12) as described herein above provides a hassle-free yarn insertion into the lappet hook (5) eyelet and smooth functioning of automatic yarn piecing assembly (8) without any hindrance.
  • the suction bell (11) can be positioned above the bobbin (7) at a distance normally in the range of 5mm to 15mm for picking the tail yarn (3).
  • the lappet tilting apparatus (12) according to the present invention is capable of sliding over the suction bell (11) on the tubular arrangement (10) for a distance of approximately 60mm for allowing the suction bell (11) to efficiently pick the tail yarn (3) from the top chase length position of the bobbin (7) irrespective of the hindrance caused by the balloon controller ring (6).
  • the above described automatic piecing assembly for ring spinning machine provides a reliable solution for picking the broken yarn end from the bobbin and enables automatic piecing operation.
  • the elbow tubular arrangement with the suction bell and the lappet tilting apparatus is able to pick the broken yarn from the bobbin anywhere from bottom to top based on the broken yarn position.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
EP20177969.1A 2019-06-06 2020-06-03 Ringspinnmaschine mit einer automatischen fadenanspinnanordnung und einer kippvorrichtung für eine fadenführung für die automatische fadenanspinnanordnung Active EP3748054B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IN201941022424 2019-06-06

Publications (2)

Publication Number Publication Date
EP3748054A1 true EP3748054A1 (de) 2020-12-09
EP3748054B1 EP3748054B1 (de) 2023-02-22

Family

ID=70977392

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20177969.1A Active EP3748054B1 (de) 2019-06-06 2020-06-03 Ringspinnmaschine mit einer automatischen fadenanspinnanordnung und einer kippvorrichtung für eine fadenführung für die automatische fadenanspinnanordnung

Country Status (2)

Country Link
EP (1) EP3748054B1 (de)
CN (1) CN112048793B (de)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3013174A1 (de) * 1980-04-03 1981-10-15 Zinser Textilmaschinen Gmbh, 7333 Ebersbach Vorrichtung zum pneumatischen abloesen und ansaugen des gebrochenen fadenendes
EP0518029A1 (de) * 1991-06-12 1992-12-16 Zinser Textilmaschinen GmbH Verfahren und Vorrichtung zum Suchen eines Fadenendes oder Aufwerfen eines Hilfsfadens an einem Kops bzw. an einen Kops oder eine leere Hülse
EP2105401A2 (de) * 2008-03-28 2009-09-30 Murata Machinery, Ltd. Vorrichtung zum Wiederfinden eines Garnendes

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3728852A (en) * 1971-06-03 1973-04-24 Maremont Corp Servicing assembly for automatic yarn piecing apparatus
US3868813A (en) * 1973-02-01 1975-03-04 Heberlein Hispano Sa Device for winding-off yarn ends
IT1227728B (it) * 1988-12-23 1991-05-06 Savio Spa Procedimento e dispositivo per unire e per riattaccare il filo allo stoppino in un filatoio ad anello
JPH07166440A (ja) * 1993-10-20 1995-06-27 Howa Mach Ltd 糸継装置の糸継成功検知装置
IT1299799B1 (it) * 1998-05-27 2000-04-04 Gaudino Spa Off Procedimento di riattacco automatico del filo in formazione in un filatoio e relativo dispositivo.
DE10124270A1 (de) * 2001-05-18 2002-12-05 Volkmann Gmbh Verfahren zum "Wiederinbetriebsetzen einer Zwirneinrichtung nach einem Fadenbruch"
JP4001052B2 (ja) * 2003-05-13 2007-10-31 株式会社豊田自動織機 紡機における玉揚げ時の糸切断方法
ITMI20110978A1 (it) * 2011-05-30 2012-12-01 Savio Macchine Tessili Spa Dispositivo di aspirazione per carrelli di servizio per filatoi open-end
EP3556919B1 (de) * 2018-04-19 2024-08-21 Lakshmi Machine Works Ltd. Spleissvorrichtung mit einem arm für eine automatische spleissapparatur und spleissverfahren

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3013174A1 (de) * 1980-04-03 1981-10-15 Zinser Textilmaschinen Gmbh, 7333 Ebersbach Vorrichtung zum pneumatischen abloesen und ansaugen des gebrochenen fadenendes
EP0518029A1 (de) * 1991-06-12 1992-12-16 Zinser Textilmaschinen GmbH Verfahren und Vorrichtung zum Suchen eines Fadenendes oder Aufwerfen eines Hilfsfadens an einem Kops bzw. an einen Kops oder eine leere Hülse
EP2105401A2 (de) * 2008-03-28 2009-09-30 Murata Machinery, Ltd. Vorrichtung zum Wiederfinden eines Garnendes

Also Published As

Publication number Publication date
EP3748054B1 (de) 2023-02-22
CN112048793A (zh) 2020-12-08
CN112048793B (zh) 2023-05-12

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