EP1249523A1 - Wirrwalze und ihre Verwendung - Google Patents

Wirrwalze und ihre Verwendung Download PDF

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Publication number
EP1249523A1
EP1249523A1 EP01870080A EP01870080A EP1249523A1 EP 1249523 A1 EP1249523 A1 EP 1249523A1 EP 01870080 A EP01870080 A EP 01870080A EP 01870080 A EP01870080 A EP 01870080A EP 1249523 A1 EP1249523 A1 EP 1249523A1
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EP
European Patent Office
Prior art keywords
cylinder
lateral
movement
interfering
unit according
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Withdrawn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
EP01870080A
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English (en)
French (fr)
Inventor
Michel Beckers
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Individual
Original Assignee
Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to EP01870080A priority Critical patent/EP1249523A1/de
Publication of EP1249523A1 publication Critical patent/EP1249523A1/de
Withdrawn legal-status Critical Current

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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

Definitions

  • the subject of the present invention is a jamming cylinder, an assembly comprising two interfering cylinders, and their uses.
  • Interference cylinders are known. Such cylinders are known and used for carding nonwoven sails.
  • the card has the essential role, in nonwoven, to produce a light, coherent veil, homogeneous and as regular as possible.
  • the regularity on the surface of the veil is obtained by a work of separation of the tufts and individualization of the fibers, this work being carried out by teeth present on the carding cylinders.
  • This work is carried out with a stretching of the material and an alignment of the fibers in the direction of the fibers through the machine.
  • This preferred orientation results in a parallelization of the fibers and therefore a lack of isotropy of the veil produced at the card painter.
  • a pell-mell or criss-cross cylinder is a cylinder rotating in the same direction than the drum, and having teeth inclined in the same direction as those of the drum (forward with respect to the direction of rotation). This cylinder creates at the point of tangency with the drum a non-crossing carding point which tends to misalign the fibers.
  • An interfering cylinder is a cylinder rotating in the opposite direction to that of the painter and having his teeth tilted in the same direction as those of the painter (backwards with respect to the direction of rotation).
  • This cylinder creates at the point of tangency with the painter a crossing point of skin which is accompanied of a condensation of the matter.
  • This condensation causes disorientation fibers, which tend to go slightly crooked, thereby decreasing the anisotropy of the product.
  • a fiber which arrives more or less aligned is placed slightly crooked, one way or the other, at random or according to its low initial tilt.
  • the object of the present invention is to improve the isotropic nature of the webs. cards by creating a positive disorientation of the fibers in the veil.
  • the present invention relates to a unit for working fiber webs, said unit comprising a support and at least one interfering cylinder rotatably mounted about its axis relative to the support, characterized in that at least one cylinder or part of cylinder is mounted movable relative to the support so as to undergo at least one lateral relative movement, advantageously horizontal, relative to the support at least in a direction parallel to the axis of rotation of the cylinder.
  • This lateral movement of the jamming cylinder having teeth acting on the fibers of the web then causes the fibers to pivot or deflect, in addition to the deflection obtained by the braking effect due to condensation.
  • the cylinder or part of cylinder mounted movable relative to the support so as to undergo at least one relative movement lateral is associated with a device to generate a lateral back and forth movement of the cylinder or part thereof in a direction parallel to the axis of rotation of the cylinder.
  • the device generating a lateral movement back and forth is a device comprising one or more means for adjusting the frequency and / or the amplitude of the back-and-forth movement, in particular as a function of the speed of scrolling of the veil and / or the length of the fibers of the veil and / or the isotropy desired veil.
  • the unit further comprises at minus a comber and / or a jamming cylinder without lateral movement and / or a jamming cylinder with lateral movement and / or a fixed cylinder.
  • a unit is therefore for example a card generally comprising two or more than two interfering cylinders placed in series one behind another.
  • the interfering cylinder with lateral displacement is located after a jamming cylinder without lateral displacement.
  • the additional deviation provided by such a unit is then simple, since due to a single interfering cylinder with lateral displacement.
  • the unit has two or more interfering cylinders with lateral displacement (said cylinders being advantageously placed one after the other on the other after the painter and possibly being separated from each other by one or several fixed cylinders), it is possible to obtain an additional deflection double.
  • the double deflection is done for example in two stages, namely a first time passing from the fiber from the doffer to the first jammer with relative lateral displacement, and a second time in the passage of the fiber from a interferer (with or without relative lateral displacement) to another (with displacement relative lateral).
  • the interfering cylinder has a length at least equal to the length of the cylinder which precedes it increased by the maximum range of back and forth movement of the interfering cylinder at lateral displacement.
  • the unit advantageously comprises one or more mechanical, electromechanical and / or electronic means regulating or controlling, continuously or not or substantially continuously, the amplitude and / or the frequency of the movement of the interfering cylinder with lateral movement.
  • the unit also comprises mechanical, electromechanical or electronic means for adjusting and / or controlling, continuously or not, the phase shift of the lateral movement of a interfering cylinder with respect to to the lateral movement of the other interfering cylinder, for frequencies of movement equal or not and / or for amplitudes of movement equal or not.
  • each interfering cylinder with lateral displacement is advantageously associated with a means independently regulating or controlling, continuously or not, the frequency and / or the amplitude of the lateral displacement.
  • the interfering cylinder with lateral displacement is constructed of a low density material, preferably light metal or light metal alloy.
  • the cylinder is made of material low weight composite. This low weight of the mobile jamming cylinder allows reduce the masses subjected to lateral relative movement (reciprocating).
  • the interfering cylinder with lateral displacement has two lateral flanges pierced in their center and a shaft extending through the cylinder through said flanges, said shaft having means acting on the flanges to ensure lateral movement of the cylinder.
  • This shape allows the traction or pushing force to be distributed over the two side flanges.
  • the disorientation obtained by the system or unit according to the invention can be added to or subtracted from that obtained by condensation. Since the disorientation obtained by condensation is random, while that obtained by the interfering cylinder with lateral displacement is positive, it is not possible that the algebraic sum of the two orientations is zero for each fiber and at all times.
  • the average deviation of the fibers will be at least on average greater than that obtained only by condensation (zero deviation or substantially zero).
  • the orientation of the fibers of the veil will be modified so that the veil will have a greater proportion of fibers inclined relative to the direction of advance of the veil or an average inclination (average calculated on the angle in absolute value of the inclination of the fibers).
  • the invention also relates to an installation for preparing a web of nonwoven, said installation having the improvement of presenting at least a unit according to the invention.
  • the subject of the invention is also a process for preparing a nonwoven web, comprising at least one step of preparing a veil and a scrambling step veil by means of at least one jamming cylinder, characterized in that one operates the scrambling step at least by means of a unit according to the invention so to subject the veil or part of it to a transverse movement by report to the direction of advancement of the veil.
  • the unit shown schematically in Figures 1 and 2 has three cylinders, know a combing cylinder 1, a first jamming cylinder 2 which receives the fibers coming from the comb cylinder 1, and a second jamming cylinder 3 which receives the fibers coming from the jamming cylinder 2.
  • the cylinders 1,2,3 are rotated, the cylinders 1 and 3 in the direction clockwise, while cylinder 2 counterclockwise.
  • the general meaning advancement of the fibers or the veil is represented by arrow 4. This general sense is included in a plane perpendicular to the axes 1A, 2A, 3A of rotation of the 1,2,3 cylinders.
  • the cylinder 2 is associated with a mechanism 2B intended to generate a movement of back and forth (arrow 5) of cylinder 2 in a direction parallel to the axis of rotation of cylinder 2. This back-and-forth movement is therefore transverse to the general direction of sail advance (arrow 4).
  • the cylinder 2 is able to undergo a maximum lateral displacement Lmax. Therefore for prevent fibers from the combing cylinder 1 from passing over the cylinder 2, the cylinder 2 has a length L2 at least equal to the length L1 of the comb cylinder 1 increased by the maximum lateral displacement Lmax.
  • the length L2 is between 1 and 1.3 times the sum L1 + Lmax.
  • the length L3 of the interfering cylinder is at least equal to the length L1 + 2 times Lmax, or at least equal to L2 + Lmax, for example included between 1 and 1.3 times the sum L2 + Lmax.
  • the arrow 5 shows the direction of the transverse direction of movement of the cylinder mobile jammer, which also corresponds to the direction in which one wishes partially tilt the fibers or fibers.
  • the arrow 4 shows the direction of advance of the fibers, preferred direction in which the fibers tend to orient.
  • Figures 3 to 6 show the effect of lateral movement of the jamming cylinder 2 on a fiber 8.
  • a fiber 8 arrives from the comber 1, substantially aligned in the direction of advance 4, this fiber having its first end 8A entering contact with teeth of the jamming cylinder 2 which undergoes lateral displacement 6, while being driven in rotation.
  • the fiber 8 thus undergoes a disorientation ⁇ 1 by report to the general management of advancement 4.
  • FIG 4 there is shown the displacement of the end 8A of the fiber in the direction of arrow 6, while being moved in the direction of arrow 4 by rotation of cylinder 2.
  • the tail 8B of the fiber 8 is substantially ready to leave the paint cylinder 1.
  • cylinder 2 is here at the end race.
  • the fiber 8 is ready to pass over the cylinder 3, while another fiber 9 is ready to pass from the combing cylinder 1 to the cylinder 2.
  • the jamming cylinder 2 is here moved in the direction of arrow 7.
  • the fiber 8 has its head 8A engaged on the interfering cylinder 3. From makes the movement of the jamming cylinder 2 in the direction 6B, the tail 8B of the fiber 8 then undergoes a displacement to create an additional disorientation ⁇ 2. Fiber 9, for its part, undergoes a disorientation ⁇ 1 relative to the direction advancement 4. The fiber 9 therefore undergoes disorientation or inclination by compared to direction 4, which is opposite to the disorientation or inclination of the fiber 8.
  • Cylinder 2 then reaches the end of its travel and then moves back into the direction 6.
  • Cylinder displacement parameters can be changed at will jammer 2. For example, depending on the length or average length of the fibers, it is possible to modify or adapt the amplitude of movement and / or the frequency of movement. It is also possible to modify the speed of movement of the cylinder 2 in one direction relative to that in the opposite direction. For example, the displacement of cylinder 2 in direction 6A is rapid, while displacement of cylinder 2 in direction 6B is slow.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Preliminary Treatment Of Fibers (AREA)
EP01870080A 2001-04-12 2001-04-12 Wirrwalze und ihre Verwendung Withdrawn EP1249523A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP01870080A EP1249523A1 (de) 2001-04-12 2001-04-12 Wirrwalze und ihre Verwendung

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP01870080A EP1249523A1 (de) 2001-04-12 2001-04-12 Wirrwalze und ihre Verwendung

Publications (1)

Publication Number Publication Date
EP1249523A1 true EP1249523A1 (de) 2002-10-16

Family

ID=8184958

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01870080A Withdrawn EP1249523A1 (de) 2001-04-12 2001-04-12 Wirrwalze und ihre Verwendung

Country Status (1)

Country Link
EP (1) EP1249523A1 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102330194A (zh) * 2010-07-12 2012-01-25 黄金山 一种分梳机
WO2012009949A1 (zh) * 2010-07-22 2012-01-26 Huang Jinshan 一种分梳机
AU2006327064B2 (en) * 2005-12-21 2012-04-26 Brudy Technology, S.L. Use of DHA, EPA or DHA-derived EPA for treating a pathology associated with cellular oxidative damage

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3538552A (en) * 1969-03-03 1970-11-10 Kendall & Co Carding device
JPH0376857A (ja) * 1989-05-16 1991-04-02 Kyowa Kikai Seisakusho:Kk 不織布用ウェブの製造方法及びその製造装置
EP0607476A1 (de) * 1993-01-16 1994-07-27 Hergeth Hollingsworth Gmbh Vorrichtung und Verfahren zum Herstellen eines Vlieses mit Wirrfaserlage

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3538552A (en) * 1969-03-03 1970-11-10 Kendall & Co Carding device
JPH0376857A (ja) * 1989-05-16 1991-04-02 Kyowa Kikai Seisakusho:Kk 不織布用ウェブの製造方法及びその製造装置
EP0607476A1 (de) * 1993-01-16 1994-07-27 Hergeth Hollingsworth Gmbh Vorrichtung und Verfahren zum Herstellen eines Vlieses mit Wirrfaserlage

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 015, no. 243 (C - 0842) 21 June 1991 (1991-06-21) *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2006327064B2 (en) * 2005-12-21 2012-04-26 Brudy Technology, S.L. Use of DHA, EPA or DHA-derived EPA for treating a pathology associated with cellular oxidative damage
CN102330194A (zh) * 2010-07-12 2012-01-25 黄金山 一种分梳机
CN102330194B (zh) * 2010-07-12 2013-08-21 黄金山 一种分梳机
WO2012009949A1 (zh) * 2010-07-22 2012-01-26 Huang Jinshan 一种分梳机

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