EP1643021B1 - System for transferring a web of fibres from a carding machine - Google Patents

System for transferring a web of fibres from a carding machine Download PDF

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Publication number
EP1643021B1
EP1643021B1 EP05102780A EP05102780A EP1643021B1 EP 1643021 B1 EP1643021 B1 EP 1643021B1 EP 05102780 A EP05102780 A EP 05102780A EP 05102780 A EP05102780 A EP 05102780A EP 1643021 B1 EP1643021 B1 EP 1643021B1
Authority
EP
European Patent Office
Prior art keywords
cylinder
web
belt conveyor
fibres
disposed
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.)
Not-in-force
Application number
EP05102780A
Other languages
German (de)
French (fr)
Other versions
EP1643021A1 (en
Inventor
Gian Piero Sertorio
Marco Fano
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.)
Autefa Solutions Italy SpA
Original Assignee
Oerlikon Neumag Italy 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 Oerlikon Neumag Italy SpA filed Critical Oerlikon Neumag Italy SpA
Priority to PL05102780T priority Critical patent/PL1643021T3/en
Publication of EP1643021A1 publication Critical patent/EP1643021A1/en
Application granted granted Critical
Publication of EP1643021B1 publication Critical patent/EP1643021B1/en
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
    • D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
    • D01G15/00—Carding machines or accessories; Card clothing; Burr-crushing or removing arrangements associated with carding or other preliminary-treatment machines
    • D01G15/02—Carding machines
    • D01G15/12—Details
    • D01G15/46—Doffing or like arrangements for removing fibres from carding elements; Web-dividing apparatus; Condensers
    • D01G15/465—Doffing arrangements for removing fibres using, or cooperating with, pneumatic means

Definitions

  • the present invention relates to a system for transferring a web of fibres from an output cylinder of a carding machine, of the kind defined in the preamble of claim 1.
  • EP 1 386 986 A1 discloses a system of this kind wherein the web removal cylinder is directly coupled to the output cylinder of the carding machine, and the suction device is disposed within the closed-loop belt of the belt conveyor, below the web removal cylinder.
  • the perforated cylinder of the suction device in operation rotates in the same direction of rotation of the conveyor belt. The latter, in order to allow the suction device to draw the web, is such as to be permeable to the flow of air induced by said suction device.
  • the object of the present invention is to provide a system which makes it possible to carry out the transfer of a web of fibres correctly, without any defects, even with small differences of peripheral speed between the removal cylinder and the subsequent conveyor belt, i.e. in conditions of slight stretching.
  • a carding machine is shown overall by 1 in the drawing, and comprises in a known manner a combing cylinder 2 and an adjacent separating cylinder 3. These cylinders are mounted to rotate about respective substantially horizontal axes in respective opposite directions as shown by the arrows 4 and 5.
  • a web of fibres is shown by V and passes, at the outlet of the carding machine 1, between the combing cylinder 2 and the separating cylinder 3, moving in general to the left with respect to the drawing.
  • a removal or discharge cylinder for the web, shown by 6, is disposed immediately downstream of the separating cylinder 3.
  • the removal cylinder 6 is for instance, a cylinder clothed with metal sawtooth wire and, in operation, is actuated to rotate in the same direction of rotation as the separating cylinder 3.
  • An apparatus for transferring the web of fibres is disposed downstream of the removal cylinder 6.
  • This apparatus comprises a belt conveyor 11, including a belt 12 which, adjacent to the removal roller 6, revolves about a return roller 13 borne by a support bench 14.
  • the apparatus 10 for transferring the web of fibres V further comprises a suction device shown overall by 15.
  • This device comprises a perforated cylinder 16 disposed to rotate about a substantially horizontal axis and made for instance from a network of very fine mesh.
  • a stationary structure 17 comprising a tube 18 coaxial with the cylinder 16 is disposed in the cylinder 16.
  • This cylinder 18 has an airtight wall and comprises a series of openings or slots 19 at the bottom.
  • Two fixed, substantially radial, dividing walls 20 extend from the tube 18 at the peripherally spaced edges of the opening 19.
  • the portion of the stationary structure 17 comprised between the dividing walls 20 forms a fixed lower suction sector, shown by 21, communicating with the region inside the tube 18 which is connected, in a manner which is not shown, to a vacuum source of known type.
  • the perforated cylinder 16 is disposed above and almost tangentially to the removal cylinder 6 and to the end roller or cylinder 13 of the belt conveyor 11, and is actuated, in operation, to rotate in the direction of the arrow 22, i.e. in the opposite direction to the direction of rotation of the removal cylinder 6 and the belt conveyor 12.
  • a recall or suction action is exerted via the portion of the perforated cylinder 16 which from time to time faces the suction sector 21 and is adapted to retain, under a vacuum, the web of fibres V so that it is in contact with a section of the outer lateral surface of this cylinder 16.
  • Slight stretching i.e. a minimal difference of peripheral speed between the upstream cylindrical member 6 and the downstream conveyor which receives the web V, makes it possible optimally to retain the mechanical properties of tensile strength of the web of fibres V in both the longitudinal and transverse directions.
  • the perforated cylinder 16 is actuated, in operation, by means of a rotary electric motor 23 secured to the bench 14 of the belt conveyor 11 and an associated belt or chain transmission.
  • the stationary structure 17 and the rotary perforated cylinder 16 are in turn borne by a structure 24 which is also secured to the bench 14.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Preliminary Treatment Of Fibers (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)
  • Credit Cards Or The Like (AREA)
  • Replacement Of Web Rolls (AREA)

Abstract

The system enables the transfer of a web of fibres (V) from a removal cylinder (6) of the web at the output of a carding machine (1), comprising a belt conveyor (11) disposed downstream of the removal cylinder (6). The system comprises a suction device (15) including a perforated cylinder (16) disposed to rotate about a substantially horizontal axis, and in which a stationary structure (17) forms with respect thereto a fixed lower suction sector (21) connected to a vacuum source. The perforated cylinder (16) is disposed above and almost tangentially to the removal cylinder (6) and to the adjacent end of the belt conveyor (11), and is actuated, in operation, to rotate in the direction opposite to the direction of rotation of this removal cylinder (6) and the belt conveyor (11).

Description

  • The present invention relates to a system for transferring a web of fibres from an output cylinder of a carding machine, of the kind defined in the preamble of claim 1.
  • EP 1 386 986 A1 discloses a system of this kind wherein the web removal cylinder is directly coupled to the output cylinder of the carding machine, and the suction device is disposed within the closed-loop belt of the belt conveyor, below the web removal cylinder. The perforated cylinder of the suction device in operation rotates in the same direction of rotation of the conveyor belt. The latter, in order to allow the suction device to draw the web, is such as to be permeable to the flow of air induced by said suction device.
  • The object of the present invention is to provide a system which makes it possible to carry out the transfer of a web of fibres correctly, without any defects, even with small differences of peripheral speed between the removal cylinder and the subsequent conveyor belt, i.e. in conditions of slight stretching.
  • This object is achieved in accordance with the invention by means of a system having the features defined in claim 1.
  • Further characteristic features and advantages of the invention are set out in the following detailed description, given purely by way of non-limiting example, made with reference to the accompanying drawing, in which a system for transferring a web of fibres of the invention is shown diagrammatically in lateral elevation and partly in section.
  • A carding machine is shown overall by 1 in the drawing, and comprises in a known manner a combing cylinder 2 and an adjacent separating cylinder 3. These cylinders are mounted to rotate about respective substantially horizontal axes in respective opposite directions as shown by the arrows 4 and 5.
  • A web of fibres is shown by V and passes, at the outlet of the carding machine 1, between the combing cylinder 2 and the separating cylinder 3, moving in general to the left with respect to the drawing.
  • A removal or discharge cylinder for the web, shown by 6, is disposed immediately downstream of the separating cylinder 3.
  • In a known manner, the removal cylinder 6 is for instance, a cylinder clothed with metal sawtooth wire and, in operation, is actuated to rotate in the same direction of rotation as the separating cylinder 3.
  • An apparatus for transferring the web of fibres, shown overall by 10, is disposed downstream of the removal cylinder 6.
  • This apparatus comprises a belt conveyor 11, including a belt 12 which, adjacent to the removal roller 6, revolves about a return roller 13 borne by a support bench 14.
  • The apparatus 10 for transferring the web of fibres V further comprises a suction device shown overall by 15. This device comprises a perforated cylinder 16 disposed to rotate about a substantially horizontal axis and made for instance from a network of very fine mesh.
  • A stationary structure 17 comprising a tube 18 coaxial with the cylinder 16 is disposed in the cylinder 16. This cylinder 18 has an airtight wall and comprises a series of openings or slots 19 at the bottom. Two fixed, substantially radial, dividing walls 20 extend from the tube 18 at the peripherally spaced edges of the opening 19.
  • The portion of the stationary structure 17 comprised between the dividing walls 20 forms a fixed lower suction sector, shown by 21, communicating with the region inside the tube 18 which is connected, in a manner which is not shown, to a vacuum source of known type.
  • The perforated cylinder 16 is disposed above and almost tangentially to the removal cylinder 6 and to the end roller or cylinder 13 of the belt conveyor 11, and is actuated, in operation, to rotate in the direction of the arrow 22, i.e. in the opposite direction to the direction of rotation of the removal cylinder 6 and the belt conveyor 12.
  • In operation, a recall or suction action is exerted via the portion of the perforated cylinder 16 which from time to time faces the suction sector 21 and is adapted to retain, under a vacuum, the web of fibres V so that it is in contact with a section of the outer lateral surface of this cylinder 16.
  • In this way, the transfer of the web of fibres V between the removal cylinder 6 and the conveyor belt 12 takes place correctly, without defects, even when there are slight differences of peripheral speed, and therefore slight stretching, between the removal cylinder 6 and the belt conveyor 12.
  • Slight stretching, i.e. a minimal difference of peripheral speed between the upstream cylindrical member 6 and the downstream conveyor which receives the web V, makes it possible optimally to retain the mechanical properties of tensile strength of the web of fibres V in both the longitudinal and transverse directions.
  • In the embodiment shown, the perforated cylinder 16 is actuated, in operation, by means of a rotary electric motor 23 secured to the bench 14 of the belt conveyor 11 and an associated belt or chain transmission.
  • The stationary structure 17 and the rotary perforated cylinder 16 are in turn borne by a structure 24 which is also secured to the bench 14.
  • The embodiments and their details may obviously be widely varied with respect to those described and illustrated purely by way of non-limiting example without prejudice to the principle of the invention, as the invention as defined by the claims encompasses all variants that provide equivalent utility using the same inventive step.

Claims (3)

  1. A system for transferring a web of fibres (V) from an output cylinder (2) of a carding machine (1), comprising a web removal cylinder (6) disposed downstream of said output cylinder (2), a belt conveyor (11) disposed downstream of and adjacent to the web removal cylinder (6), a suction device (15) including a perforated cylinder (16) disposed to rotate about a substantially horizontal axis, and in which a stationary structure (17) forms with respect thereto a fixed suction sector (21) connected to a vacuum source, the perforated cylinder (16) being disposed almost tangentially to the removal cylinder (6) and adjacent the belt conveyor (11), and being actuated, in operation, to rotate in the direction opposite to the direction of rotation of the web removal cylinder (6); the system being characterised in that it comprises
    a separating cylinder (3), disposed between said output cylinder (2) of the carding machine (1) and the web removal cylinder (6) and actuated, in operation, so as to rotate in the direction opposite to the direction of rotation of said output cylinder (2) of the carding machine (1);
    in that the suction device (15) and its perforated cylinder (16) are disposed above the web removal cylinder (6) and above the input end of the belt conveyor (11), and
    in that said perforated cylinder (16) is actuated in operation, to rotate in the direction opposite to the direction of rotation of the belt conveyor (11).
  2. A system for transferring a web of fibres (V) as claimed in claim 1, in which the suction device (15) is secured to and supported by a bearing structure (14) of this belt conveyor (11).
  3. A system for transferring a web of fibres (V) as claimed in claim 2, in which the suction device (15) is associated with an actuation motor (23) secured to the bearing structure (14) and coupled to the perforated cylinder (16).
EP05102780A 2004-09-24 2005-04-08 System for transferring a web of fibres from a carding machine Not-in-force EP1643021B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL05102780T PL1643021T3 (en) 2004-09-24 2005-04-08 System for transferring a web of fibres from a carding machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT000115U ITTO20040115U1 (en) 2004-09-24 2004-09-24 SYSTEM FOR THE TRANSFER OF A FIBER VEIL COMING FROM A CARDA.

Publications (2)

Publication Number Publication Date
EP1643021A1 EP1643021A1 (en) 2006-04-05
EP1643021B1 true EP1643021B1 (en) 2008-07-30

Family

ID=34956281

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05102780A Not-in-force EP1643021B1 (en) 2004-09-24 2005-04-08 System for transferring a web of fibres from a carding machine

Country Status (6)

Country Link
EP (1) EP1643021B1 (en)
AT (1) ATE403020T1 (en)
DE (1) DE602005008532D1 (en)
ES (1) ES2311195T3 (en)
IT (1) ITTO20040115U1 (en)
PL (1) PL1643021T3 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115094549B (en) * 2022-07-21 2024-02-23 罗莱生活科技股份有限公司 Carding device and carding method for superfine fibers

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1241319B (en) * 1961-03-14 1967-05-24 Dr Ernst Fehrer Device for the production of fiber fleeces or fiber wadding with longer and bulky fibers
DE1510449A1 (en) * 1965-11-26 1971-03-18 Tessiltecnica Di M Mealli Removal device for a textile fiber web, in particular carded, garnished or recycled fibers
FR2725216B1 (en) * 1994-09-30 1996-12-20 Thibeau Et Cie A DEVICE FOR DETACHING AND TRANSPORTING AT HIGH SPEED A FIBROUS VEIL LEAVING A CARD
FR2732042B1 (en) * 1995-03-22 1997-06-13 Thibeau & Cie Sa A SUCTION CYLINDER ALLOWS THE TRANSFER OF A FIBROUS VEIL BETWEEN A CONVEYOR BELT AND TWO CALENDER CYLINDERS
DE10234803A1 (en) * 2002-07-31 2004-02-12 Erko Textilmaschinen Gmbh Device for removing a nonwoven fabric from a card, with a suction roller

Also Published As

Publication number Publication date
PL1643021T3 (en) 2009-01-30
DE602005008532D1 (en) 2008-09-11
ITTO20040115U1 (en) 2004-12-24
ES2311195T3 (en) 2009-02-01
ATE403020T1 (en) 2008-08-15
EP1643021A1 (en) 2006-04-05

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