EP2570526A1 - Dispositif de compactage d'une bande de fibres dans un métier à filer - Google Patents

Dispositif de compactage d'une bande de fibres dans un métier à filer Download PDF

Info

Publication number
EP2570526A1
EP2570526A1 EP12182999A EP12182999A EP2570526A1 EP 2570526 A1 EP2570526 A1 EP 2570526A1 EP 12182999 A EP12182999 A EP 12182999A EP 12182999 A EP12182999 A EP 12182999A EP 2570526 A1 EP2570526 A1 EP 2570526A1
Authority
EP
European Patent Office
Prior art keywords
suction
support body
duct
contact
cylinder
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
EP12182999A
Other languages
German (de)
English (en)
Other versions
EP2570526B1 (fr
Inventor
Massimo Galli
Rosario Assenza
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.)
Marzoli Machines Textile SRL
Original Assignee
Marzoli 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 Marzoli SpA filed Critical Marzoli SpA
Publication of EP2570526A1 publication Critical patent/EP2570526A1/fr
Application granted granted Critical
Publication of EP2570526B1 publication Critical patent/EP2570526B1/fr
Not-in-force 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
    • D01H5/00—Drafting machines or arrangements ; Threading of roving into drafting machine
    • D01H5/18—Drafting machines or arrangements without fallers or like pinned bars
    • D01H5/70—Constructional features of drafting elements
    • D01H5/72—Fibre-condensing guides
    • 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
    • D01H5/26—Drafting machines or arrangements without fallers or like pinned bars in which fibres are controlled by one or more endless aprons
    • 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

Definitions

  • the present invention relates to a compacting device of a fibre web in a spinning frame.
  • the purpose of the present invention is to make a compacting device of a fibre web in a spinning frame which satisfies such need.
  • FIG. 1 shows a view of the drawing zone of a spinning frame, fitted with a compacting device according to the present invention
  • FIG. - figure 2 shows an embodiment of the compacting device according to a rear view, that is observing the compacting device from the side of the drawing cylinder to which it is applied;
  • FIG. 3 shows a cross-section diagram of a suction unit
  • FIG. 4 shows a suction unit in separate parts
  • FIG. 5 shows a cross-section view of the suction unit in figure 4 .
  • a spinning frame on a spinning line comprises a plurality of spinning points, each spinning point comprises a spindle for the formation of a reel of yarn.
  • Each spinning point further comprises a drawing device, which a roving W1 goes into and a drawn web comes out of, and a compacting device 2, from which a compacted web W3 emerges, generally destined to be twisted and wound to form the reel.
  • the drawing device comprises, in an opposite direction to that of advancement of the web, a first pair of cylinders, formed of the first drawing cylinder 4a and the first pressure cylinder 4b, which surmounts the first drawing cylinder and is in pressurised contact with it, to draw the web passing through it.
  • the drawing device 1 comprises, in addition, a second pair of cylinders, upstream of the first pair of cylinders, formed of the second drawing cylinder 6a and the second pressure cylinder 6b, and a third pair of cylinders, upstream of the second pair of cylinders, formed of the third drawing cylinder and the third pressure cylinder.
  • the pairs of cylinders have different rotation speeds, so as to achieve drawing of the web moving forward; in general, the rotation speed of the second pair of cylinders is greater than that of the third pair and the rotation speed of the first pair is greater than that of the second pair.
  • the ratios of the rotation speeds define the drawing ratios; in general, the drawing ratio between the second and third pair is much less than the drawing ratio between the first and second pair: this means that the web is drawn lightly between the third and second pair and drawn more forcefully between the second and the first pair of cylinders.
  • the drawing device comprises a drawing cage 10 between the third pair of cylinders and the first pair of cylinders, which the second pair of cylinders is part of.
  • the cage 10 comprises an inversion abutment 12, downstream of the second pressure cylinder 6b, distanced from it, and an upper belt 14, wound around the second cylinder 6b, by which it is dragged in movement, and wound around the inversion abutment 12, so as to form a closed circuit.
  • the cage 10 further comprises a fixed lower guide 16, positioned downstream of the second drawing cylinder 6a, distanced from it, having a main portion 18 which extends mainly in the direction of advancement of the web, terminating next to the abutment 12, and a lower belt 20, wound around the second drawing cylinder 6a, by which it is dragged in movement, and around the main portion 18, so as to form a closed circuit.
  • the two belts 14, 20 are in contact with each other along a section aligned with the gap between the second pair of cylinders and the first pair of cylinders, and the web is dragged between them.
  • the web enters the compacting device 2, which it comes out of as a compacted web W3.
  • the compacting device 2 comprises the first drawing cylinder 4a and the first pressure cylinder 4b, a suction mouth 30 facing the first drawing cylinder 4a, and an output cylinder 4c, downstream of the first pressure cylinder 4b, in pressurised contact with the first drawing cylinder 4a.
  • the suction mouth 30 can be fitted to a general main cylinder; in other words, the suction mouth does not necessarily have to be fitted to a drawing device.
  • the spinning frame comprises a drawing device and, downstream of this, a main cylinder, coupled to the pressure cylinder and to the output cylinder, which the suction mouth co-operates with.
  • the first pressure cylinder 4b co-operates peripherally with the first drawing cylinder 4a in an input contact zone and the output cylinder 4c co-operates peripherally with the first drawing cylinder 4a in an output contact zone, so that the web passes along the contact zones between these, travelling along a contact section on the outer surface of the first drawing cylinder 4a.
  • the suction mouth 30 is connected, by means of a suction duct 60, to suction means suitable to form a current of aspirated air.
  • the mouth 30 comprises a main body 32 provided with a main surface 34, facing the outer surface of the first drawing cylinder 4a, on which a suction zone extends provided with at least one suction aperture 36, in the form of a slit or hole, from which the air is aspirated by the suction means.
  • the main surface 34 is arched, for example with a curvature such as to substantially trace the curvature of the outer surface of the first drawing cylinder, with which said mouth 30 co-operates.
  • said main surface 34 has a greater or equal curvature radius to the curvature radius of the outer surface of the first drawing cylinder 4a.
  • two adjacent spinning points have a single suction unit 70, connected to at least one suction duct 60, preferably to a single suction duct 60, fitted with two separate suction mouths 30, each operating on a respective contact section of the first drawing cylinder 4a of the spinning point.
  • the suction mouths of the suction unit are identical.
  • the suction unit 70 comprises a support body 80, fitted with at least one coupling arm 82 for engagement with a pressure axis 84 between two consecutive pressure cylinders 4b and at least one housing seat 86 to house the support body 80 against a pressure axis 88 between two consecutive output cylinders 4c.
  • the support body 80 is internally hollow so that the suction duct 60 communicates with two side branches 89 which preferably open in a Y, and come out in side apertures 90 opening at the sides of the support body.
  • the support body 80 envisages a pair of sliding guides 92, 94 which extend along the side aperture 90, for example radially in relation to the first drawing cylinder 4a.
  • the suction unit 70 comprises at least one intermediate body 100, 102, couplable in a detachable manner to the support body 80.
  • the intermediate body 100 is axially elongated (with reference to the direction of the rotation axis of the drawing cylinders) and fitted internally with an intermediate duct 104, which at the engagement end with the support body 80 is accessible from an intermediate aperture 106.
  • the intermediate body 100, 102 is fitted with a pair of prominences 108, slidingly couplable to the respective sliding guides 92, 94 provided on the support body 80.
  • the intermediate apertures 106 are aligned with the side apertures 90 of the support body, forming a fluidic continuity between the suction duct 60 of the support body 80 and the intermediate ducts 104.
  • Each intermediate duct 104 comes out in an end aperture 110, facing the lateral surface of the first drawing cylinder 4a.
  • the suction unit 70 further comprises attachment means for the permanent attachment of the intermediate bodies 100, 102 to the support body 80.
  • the means of attachment comprise at least one pliable pin 112 projecting from the intermediate body 100, 102, and a plate 114 fitted with respective holes 116 for the snap insertion of the pins 112.
  • the plate 114 is attachable to the support body 80 for example by means of a screw 118.
  • the attachment means comprise a leaf spring 120 positioned between the plate 114 and the support body 80, also traversed by the screw 118.
  • the suction unit 70 further comprises said suction mouths 30, slidingly engageable with the respective intermediate body.
  • the mouth 30 is provided with an inner chamber 121 in fluidic communication with the holes positioned on the arched surface 34.
  • the intermediate body 100, 102 is fitted with guide elements 122 alongside the end aperture 110, while the mouth 30 is fitted with a pair of rails 124, which together with the guide elements 122, form a dovetailed guide system.
  • a snap system is envisaged for positioning the mouth, for example, made by means of a prominence 126 projecting from the guide element 122 and suitable for snapping into a respective seat made on the surface of the mouth 30 facing said guide element.
  • the inner chamber 121, the intermediate duct 104 and the side branch 89 form an overall duct which is mainly divergent (in a widespread manner along the duct or in a concentrated manner in some sections) in the suction direction of the air from the suction apertures of the mouth 30 as far as the suction duct 60 of the support body, so as to facilitate suction and limit or eliminate the accumulation of dust, fibres and the like.
  • the intermediate aperture 106 has a lesser extension than the extension of the side aperture 90, so that upon transit from the intermediate duct 104 to the side branch 89 a sudden widening of the through section of the air occurs.
  • the inner chamber 121 has a lesser extension than the extension of the end aperture 110, so that upon transit from the inner chamber 121 to the intermediate branch 104 a sudden widening of the through section of the air occurs.
  • the compacting device according to the present invention satisfies the need for fast dismantling, so as to facilitate maintenance and adjustment operations.
  • the device according to the present invention makes it possible to optimise the flow of suction air, avoiding or limiting the accumulation of dirt, fibres and the like.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Preliminary Treatment Of Fibers (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
EP12182999.8A 2011-09-13 2012-09-04 Dispositif de compactage d'une bande de fibres dans un métier à filer Not-in-force EP2570526B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT000123A ITBS20110123A1 (it) 2011-09-13 2011-09-13 Dispositivo di compattazione di un nastro di fibre tessili in un filatoio

Publications (2)

Publication Number Publication Date
EP2570526A1 true EP2570526A1 (fr) 2013-03-20
EP2570526B1 EP2570526B1 (fr) 2014-10-08

Family

ID=44872467

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12182999.8A Not-in-force EP2570526B1 (fr) 2011-09-13 2012-09-04 Dispositif de compactage d'une bande de fibres dans un métier à filer

Country Status (4)

Country Link
EP (1) EP2570526B1 (fr)
CN (1) CN102995178A (fr)
BR (1) BR102012023067A2 (fr)
IT (1) ITBS20110123A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3020854A1 (fr) * 2014-11-13 2016-05-18 Murata Machinery, Ltd. Dispositif de tirage et métier à filer
WO2019115355A1 (fr) * 2017-12-15 2019-06-20 Maschinenfabrik Rieter Ag Banc d'étirage pour un métier à filer et dispositif de compression

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004104279A1 (fr) * 2003-05-20 2004-12-02 Saurer Gmbh & Co Kg Metier continu a filer pourvu de dispositifs de compression
DE102010054850A1 (de) * 2009-12-28 2011-06-30 Rotorcraft Ag Mehrteilige Verdichtereinrichtung zum Verdichten eines Faserbandes und Spinnereimaschine mit einer solchen Verdichtereinrichtung

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT249534Y1 (it) * 2000-06-08 2003-05-19 Marzoli Spa Sottogruppo smontabile per gruppi destinati a compattare fasci difibre tessili.
EP1930488A1 (fr) * 2006-12-09 2008-06-11 Maschinenfabrik Rieter Ag Machine à filer comportant des dispositis de condensation de fibres
CN201228299Y (zh) * 2008-07-14 2009-04-29 张�育 集聚纺纱汇聚装置

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004104279A1 (fr) * 2003-05-20 2004-12-02 Saurer Gmbh & Co Kg Metier continu a filer pourvu de dispositifs de compression
DE102010054850A1 (de) * 2009-12-28 2011-06-30 Rotorcraft Ag Mehrteilige Verdichtereinrichtung zum Verdichten eines Faserbandes und Spinnereimaschine mit einer solchen Verdichtereinrichtung

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3020854A1 (fr) * 2014-11-13 2016-05-18 Murata Machinery, Ltd. Dispositif de tirage et métier à filer
WO2019115355A1 (fr) * 2017-12-15 2019-06-20 Maschinenfabrik Rieter Ag Banc d'étirage pour un métier à filer et dispositif de compression
CN111527248A (zh) * 2017-12-15 2020-08-11 里特机械公司 用于纺纱机的牵伸装置和压缩装置

Also Published As

Publication number Publication date
CN102995178A (zh) 2013-03-27
ITBS20110123A1 (it) 2013-03-14
BR102012023067A2 (pt) 2013-08-06
EP2570526B1 (fr) 2014-10-08

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