EP0484997A1 - Spinnmaschine mit einem pneumatischen Absaugsystem zum Entfernen von Staub, Faserflug und Fadenresten - Google Patents

Spinnmaschine mit einem pneumatischen Absaugsystem zum Entfernen von Staub, Faserflug und Fadenresten Download PDF

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Publication number
EP0484997A1
EP0484997A1 EP91202689A EP91202689A EP0484997A1 EP 0484997 A1 EP0484997 A1 EP 0484997A1 EP 91202689 A EP91202689 A EP 91202689A EP 91202689 A EP91202689 A EP 91202689A EP 0484997 A1 EP0484997 A1 EP 0484997A1
Authority
EP
European Patent Office
Prior art keywords
spinning
suction
duct
spinning machines
ducts
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.)
Withdrawn
Application number
EP91202689A
Other languages
English (en)
French (fr)
Inventor
Sandro Sartoni
Alessandro Mirri
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.)
Savio SpA
Savio Macchine Tessili SpA
Original Assignee
Savio SpA
Savio Macchine Tessili SpA
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 Savio SpA, Savio Macchine Tessili SpA filed Critical Savio SpA
Publication of EP0484997A1 publication Critical patent/EP0484997A1/de
Withdrawn legal-status Critical Current

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Classifications

    • 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

Definitions

  • This invention relates to improvements in the pneumatic system provided for removing dust, fibre web and broken yarns in spinning machines, in particular ring spinning machines, which produce yarn for depositing on rod-shaped tubes in order to form wound yarn packages.
  • Said ring spinning machines comprise a plurality of working positions, normally on two opposing faces, and are therefore of considerable length.
  • Textile machines comprise suction ducts used for the most varying purposes, such as to clean determined parts of the machine, to remove fibre dust and to draw in excess yarn ends, cut-off yarn pieces and the like. It is well known that in drafting systems on spinning machines, a fibre sliver consisting of an assembly of fibres of a certain length is subjected to considerable traction with the result that a certain quantity of fibres, particularly the short fibres, separate to form dust. It is therefore necessary to clean the drafting components and to remove the spinning fly and dust from the various machine parts and from the yarn under formation. Any pieces of broken yarn also have to be drawn off. To achieve this, the suction action must be efficient and uniform along the entire spinning face. In addition, the spinning faces of ring spinning machines are known to extend horizontally for a considerable length, namely for several tens of metres, given that the number of spinning spindles can be of the order of one thousand, one following another.
  • the cross-section of the suction air duct and the power of the pneumatic system must therefore be relatively large, with a consequently high system and operating cost for this service.
  • the draw-off of dust, fibres. broken yarns etc. in known systems is insufficiently continuous in those regions furthest from the suction fan or other motorized device which provides the suction action.
  • the air throughput in a centralized suction system in which a suction duct extending along the entire spinning face serves all the spinning spindles via suction nozzles or slots is equal to the total air quantity required to provide energetic suction action at all the spinning spindles.
  • the air velocity in the ducts and through the suction slots must be sufficiently high, and the vacuum produced must take account of the overall and localized pressure drops.
  • Fibres, dust and broken yarns which have not been properly drawn in by the suction tubes often trigger a build-up which obstructs the suction action required for continuous cleaning of the spindles, which then suffer from a progressive deposition of fibre dust on their various parts and on the yarn under formation.
  • the result is that irregularities and defects appear in the yarn to the detriment of quality, such irregularities leading in the limit to yarn breakage either during its formation or during the subsequent yarn working stages.
  • the reasons for all this are the provision of only one suction duct from which all the suction tubes extend, there being more than one for each spinning spindle, and the provision of only one suction fan, located only at the headstock end of the spinning machine.
  • the provision of only one suction duct and suction fan do not sufficiently guarantee a substantially uniform suction along the entire spinning face, with the consequence that the fibrils and dust which deposit on the various spinning machine members are not effectively removed, so compromising proper spinning.
  • the slots in the suction tubes which are of narrow cross-section, easily and frequently clog due to the fact that the suction action is weak, so that the suction efficiency is considerably reduced after a few hours of operation, making frequent maintenance and cleaning of the suction slots necessary.
  • An object of the present invention is to provide a pneumatic system for removing fibre dust and broken yarn pieces in spinning machines which is free of the aforesaid drawbacks and is able to function with greater effectiveness and for a longer time, without requiring frequent maintenance.
  • a further object of the present invention is to rationalize the construction of the pneumatic system of a ring spinning machine, both in terms of its capacity and in terms of its suction efficiency in effectively removing the fibrils and flying yarn pieces from the spinning spindles.
  • a further object of the present invention is to provide a pneumatic suction system which is of new conception while at the same time being simple, and offering the facility for applying suction to further additional regions which complete the entire suction requirement in terms of any further functions required by the particular application under way.
  • a pneumatic suction system in a spinning machine of considerable length, in particular a ring spinning machine, wherein said pneumatic suction system is composed of two suction centres, one at each end of the spinning machine, each suction centre maintaining under vacuum a duct which extends along one half of the entire spinning face and is arranged to operate on and serve substantially one half of the total number of spinning spindles of a ring spinning machine.
  • Said ducts, one for each suction centre are aligned and parallel to the machine axis, and are arranged one following the other along the entire spinning face.
  • each suction duct comprises in proximity to said hermetic separator plate a gate for closing or opening the entry of external air so as to regulate the suction along the duct.
  • Figure 1 is a schematic frontal view of the improved pneumatic suction system of a ring spinning machine according to the present invention, showing in particular the two motor-driven suction fans, one for each end of the spinning machine, each fan maintaining vacuum in one duct extending along one half of the entire spinning face.
  • Figure 2 is a schematic frontal section of Figure 1 taken on the line A-A, said section being taken in proximity to the middle of the spinning face at which both the inclined plate for hermetically separating the two suction ducts and the gates for closing and opening the entry of external air are located, the figure schematically illustrating a known spindle of a ring spinning machine with the overlying drafting unit.
  • 1 schematically indicates the ring spinning machine which operates on two opposing faces comprising a large plurality of working positions and is hence of considerable length
  • 2 is the suction duct in which vacuum is created by the motor-driven fan 3, this latter being located and fixed at the end 5 of the spinning machine 1
  • 4 is the suction duct in which vacuum is created by the motor-driven fan 6, this latter being located and fixed at the end 7
  • 8 is the end gate of the duct 4, said gate 8 being movable horizontally by the service operator to open or close the entry of external air to regulate the suction along the duct
  • 9 is the sufficiently inclined plate located to substantially correspond with the middle of the entire spinning face of the spinning machine 1, said plate 9 hermetically separating the two suction ducts 2 and 4
  • 12 is the end gate of the duct 2, said gate 12 being movable horizontally by the service operator to open or close the entry of external air to regulate the suction along the duct
  • 14 and 16 are suction tubes extending from one of the two suction ducts 2 and 4, said tubes
  • Said suction tubes 14 and 16 enter the suction duct advantageously inclined thereto both to a plane perpendicular to the axis of the spinning machine and to a plane parallel to said axis.
  • the angles of inclination of the suction tubes 14 and 16 to said planes are such that the air in flowing from the tube slots and into the suction duct 2 or 4 does not undergo a sharp direction change, hence considerably reducing localized pressure drops.
  • the entry slots in the suction tubes 14 and 16 lie in a position corresponding with and in proximity to the known ring of the spinning spindle 18, where a certain quantity of especially short fibres is present, together with the formation of dust and broken yarn pieces and the like.
  • the entry slots in said suction tubes 14 and 16 can take varied geometrical forms, for instance a substantially circular or oval geometrical form, or an actual thin rectangular slit, or other forms; 11 and 15 are suction tubes flowing into one of the two suction ducts 2 and 4, said tubes 11 and 15 each operating on one spinning face opposite the other, they lying with their entry slots in a position corresponding with the region immediately below the exit rollers of the drafting unit 19 to effectively remove those fibres which separate from the fibre web in this region, as is well known to the expert of the art.
  • suction tubes 11 and 15 enter the suction duct advantageously inclined thereto in the same manner as described for the suction tubes 14 and 16.
  • the entry slots in said suction tubes 11 and 15 can take varied geometrical forms, for instance a substantially circular geometrical form, or a horizontal or vertical thin rectangular slit, or other thin forms.
  • the fan housings 3 and 6 house the suction fans and the filter elements.
  • the fibre dust and broken yarn pieces are drawn through the slots in the tubes 11, 15 and 14, 16 and pass from the suction ducts 2 or 4 to the respective housings 3 or 6 for collection, where they are retained by the filter surface.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Filters For Electric Vacuum Cleaners (AREA)
  • Scissors And Nippers (AREA)
  • Preliminary Treatment Of Fibers (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
EP91202689A 1990-10-23 1991-10-16 Spinnmaschine mit einem pneumatischen Absaugsystem zum Entfernen von Staub, Faserflug und Fadenresten Withdrawn EP0484997A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT02182590A IT1246306B (it) 1990-10-23 1990-10-23 Perfezionamenti nelle macchine a filare con impianto pneumatico di aspirazione per l'asportazione di pulviscolo, velo di fibre e fili rotti.
IT2182590 1990-10-23

Publications (1)

Publication Number Publication Date
EP0484997A1 true EP0484997A1 (de) 1992-05-13

Family

ID=11187393

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91202689A Withdrawn EP0484997A1 (de) 1990-10-23 1991-10-16 Spinnmaschine mit einem pneumatischen Absaugsystem zum Entfernen von Staub, Faserflug und Fadenresten

Country Status (2)

Country Link
EP (1) EP0484997A1 (de)
IT (1) IT1246306B (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004010480A1 (de) * 2004-03-04 2005-09-22 Goss International Montataire S.A. Vorrichtung und Verfahren zur Absaugung von Spänen in einer bedruckstoffverarbeitenden Maschine
CN107604491A (zh) * 2017-10-26 2018-01-19 经纬纺织机械股份有限公司 一种环锭细纱机双侧工艺吸棉装置
CN108465682A (zh) * 2018-04-20 2018-08-31 响水县米兰纺织有限公司 一种纺织车间用的废料清理装置

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3412545A (en) * 1967-05-22 1968-11-26 Luwa Ltd Pneumatic cleaner for roving frames and the like
FR2195714A1 (de) * 1972-08-10 1974-03-08 Marzoli & C Spa

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3412545A (en) * 1967-05-22 1968-11-26 Luwa Ltd Pneumatic cleaner for roving frames and the like
FR2195714A1 (de) * 1972-08-10 1974-03-08 Marzoli & C Spa

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 11, no. 262 (C-442)(2709) 25 August 1987 & JP-A-62 062 936 ( NISSHINBO IND ) 19 March 1987 *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004010480A1 (de) * 2004-03-04 2005-09-22 Goss International Montataire S.A. Vorrichtung und Verfahren zur Absaugung von Spänen in einer bedruckstoffverarbeitenden Maschine
CN107604491A (zh) * 2017-10-26 2018-01-19 经纬纺织机械股份有限公司 一种环锭细纱机双侧工艺吸棉装置
CN108465682A (zh) * 2018-04-20 2018-08-31 响水县米兰纺织有限公司 一种纺织车间用的废料清理装置
CN108465682B (zh) * 2018-04-20 2023-11-24 四川亚缇纺织科技有限公司 一种纺织车间用的废料清理装置

Also Published As

Publication number Publication date
IT9021825A0 (it) 1990-10-23
IT9021825A1 (it) 1992-04-23
IT1246306B (it) 1994-11-17

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