EP0945541A2 - Dispositif pour le grattage uniforme du centre et des lisières d'une étoffe textile - Google Patents

Dispositif pour le grattage uniforme du centre et des lisières d'une étoffe textile Download PDF

Info

Publication number
EP0945541A2
EP0945541A2 EP99105385A EP99105385A EP0945541A2 EP 0945541 A2 EP0945541 A2 EP 0945541A2 EP 99105385 A EP99105385 A EP 99105385A EP 99105385 A EP99105385 A EP 99105385A EP 0945541 A2 EP0945541 A2 EP 0945541A2
Authority
EP
European Patent Office
Prior art keywords
fabric
raising
cylinders
drum
centre
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Withdrawn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
EP99105385A
Other languages
German (de)
English (en)
Other versions
EP0945541A3 (fr
Inventor
Gianrenato Ruaro
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.)
Lafer SpA
Original Assignee
Lafer 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 Lafer SpA filed Critical Lafer SpA
Publication of EP0945541A2 publication Critical patent/EP0945541A2/fr
Publication of EP0945541A3 publication Critical patent/EP0945541A3/fr
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06C—FINISHING, DRESSING, TENTERING OR STRETCHING TEXTILE FABRICS
    • D06C11/00—Teasing, napping or otherwise roughening or raising pile of textile fabrics

Definitions

  • This invention concerns a device to uniformly raise the centre and selvages of a fabric, as set forth in the main claim.
  • the invention is applied in raising machines in order to make uniform the action of the raising cylinders over the whole width of the fabric, preventing dis-uniformity between the centre and the areas near the lateral edges, or selvages, of the fabric.
  • the state of the art in the textile field includes raising machines wherein the fabric is wound onto a raising drum which has a plurality of rotary raising cylinders on the circumference.
  • Each of the raising cylinders is lined with a packing consisting of a linen and/or rubberised strip, or felt, covered by metallic needles inclined in the direction of advance of the fabric, or in the opposite direction, which penetrate the passing fabric and pull the fibres of the threads.
  • the length of the raising cylinders is usually greater than the width of the fabric being worked; this is so as to cover a vast range of fabric widths with the same machine and also to make absolutely certain that the entire width of the fabric is raised.
  • the central area of the packing is always influenced by the raising action, whereas the lateral areas are not always so, which causes a differentiated wear on the packing.
  • the different wear on the packings entails a different raising action on the centre of the fabric and the selvages, or edges, thereof.
  • the guide devices moreover, cannot easily be implemented on existing textile machines, since they require substantial modifications in the configuration thereof.
  • the purpose of the invention is to provide a device suitable to raise the entire width of the fabric in a uniform manner, particularly the centre and the selvages, which will be simple to construct and to operate, economical and easily applicable even to existing textile machines and efficient for every type of fabric and for every type of yarn.
  • the device according to the invention includes means suitable to change the winding angle, or angle of adherence, of the fabric onto the raising drum in the various transverse zones of the fabric and in particular to change the winding angle between the centre and the lateral zones thereof.
  • Winding angle should be taken to mean the angle measured at the centre of the raising drum, subtended between the point of contact, or inlet, and the point of detachment, or outlet, of the fabric with the raising drum.
  • the fabric in correspondence with at least one of the lateral zones, or of both, has a different winding angle onto the drum, for example smaller, compared with that of the fabric at the centre.
  • a different angle means that the raising action is performed for a different time, for example, a shorter time, in the proximity of the selvages compared with the centre.
  • a possibly reduced raising time compensates the lesser wear of the packings in correspondence with the lateral zones of the raising cylinders and therefore balances the raising action thereof in order to make the raising action uniform over the whole length of the cylinders, that is over the whole width of the fabric.
  • Fig. 1 shows a diagram of a raising machine 10 comprising a raising drum 16 on the circumference of which a plurality of raising cylinders 11 is mounted, equipped with their own rotatory motion, in the same and/or in the opposite direction with respect to the motion of the drum 16.
  • Each of the raising cylinders 11 is lined by a packing 11a with needles or hooks to extract the threads from the fabric 12 while it is winding onto the drum 16 and to give the fabric the desired downy feel.
  • the raising machine 10 has an inlet drawing cylinder 17a and an outlet drawing cylinder 17b between which the fabric 12 is maintained under tension while it is winding around the drum 16.
  • the drawing cylinders 17a and 17b substantially define the winding angle of the fabric 12 around the drum 16, defined as the angle at the centre subtended between the point of contact A at the inlet and the point of contact B at the outlet from the drum 16.
  • the device 14 consists of means 13 which are pre-disposed to make the winding angle of the fabric 12 onto the drum 16 different, at least between the central zone of the fabric 12 and its lateral zones near the edges or selvages of the fabric 12.
  • the means 13 make the winding angle ⁇ of the central strip of the fabric 12 different, and in this case greater, compared with the winding angle ⁇ of the lateral zones; in this way, the lateral zones are affected by the raising action for a shorter time, thus balancing and compensating the differentiated wear of the packing 11a of the raising cylinders 11, which is usually greater in correspondence with the central zone.
  • the means 13 are pre-disposed to make the points of contact, inlet A' and outlet B', of the central part of the fabric 12 different from the points of contact, respectively inlet A'' and outlet B'', of the lateral zones of the fabric 12.
  • the winding angle ⁇ assumes a value of between 220° and 290°, preferably around 240° ⁇ 250°, and the winding angle ⁇ assumes a value of between 190° and 260°, preferably around 220° ⁇ 230°.
  • the means 13 cooperate with the conformation of the profile of at least one of the drawing cylinders 17a and 17b.
  • the drawing cylinders 17a and 17b in this case both, have a rounded profile with a central convexity so that the fabric 12, winding under tension between the drawing cylinders, comes into contact with the raising cylinders 11 first with its central strip and then with its lateral zones.
  • the profile of the drawing cylinders 17a and 17b is concave.
  • the profile of the drawing cylinders 17a and 17b is substantially plane, but their axis of rotation is arched, so that during the rotation movement the generatrix of the cylinders 17a and 17b assumes a desired, non-circular trajectory which causes an effect of differentiation, at inlet and at outlet, between the centre and the lateral zones of the fabric 12.
  • the drawing cylinders 17a and 17b may be made revolving with respect to the axis of advance of the fabric 12 or the axis of the drum 16 so as to vary the angles with which the fabric is brought nearer to the drum 16 and therefore to displace the relative points of contact A', B' and A'', B'' so as to regulate in a desired manner the raising time and hence the raising action, for example according to the wear of the packing 11a of the cylinders 11, the type of processing and other factors.
  • drawing cylinders 17a and 17b can be replaced by others with a different rounded shape, or with a differently arched axis of rotation, according to the desired differentiation of the winding angle between the various zones of the width of fabric 12.
  • the means 13 consist of a shaped bar 15 with an axis substantially parallel to that of the raising cylinders 11 and a convex profile towards the centre of the raising cylinders 11.
  • a first shaped bar 15 is arranged between the inlet drawing cylinder 17a and the first point of contact of the fabric 12 on the drum 16 and a second shaped bar 15 is arranged between the last point of contact of the fabric 12 with the drum 16 and the outlet drawing cylinder 17b (Fig. 4).
  • the rounded shape 115 makes the central part of the fabric remain in contact with the raising cylinders 11 until point A'', while contact between the raising cylinders 11 and the lateral zones remains until point B'', upstream of point A''.
  • the winding angle ⁇ of the central strip of the fabric 12 is greater than the winding angle ⁇ of the lateral zones.
  • the shaped bar 15 can be replaced by rounded or convex cylinders, by rotary cylinders with an arched axis, by shaped blades or other appropriate devices, with adjustable rounded, convex or concave shape, or with an inclination or position which can be regulated according to the desired differentiation of the points of first and last contact between the fabric 12 and the raising drum 16.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Preliminary Treatment Of Fibers (AREA)
EP99105385A 1998-03-25 1999-03-16 Dispositif pour le grattage uniforme du centre et des lisières d'une étoffe textile Withdrawn EP0945541A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT98UD000049A IT1299763B1 (it) 1998-03-25 1998-03-25 Dispositivo per uniformare la garzatura tra centro e cimosse in un tessuto
ITUD980049 1998-03-25

Publications (2)

Publication Number Publication Date
EP0945541A2 true EP0945541A2 (fr) 1999-09-29
EP0945541A3 EP0945541A3 (fr) 2000-03-01

Family

ID=11422629

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99105385A Withdrawn EP0945541A3 (fr) 1998-03-25 1999-03-16 Dispositif pour le grattage uniforme du centre et des lisières d'une étoffe textile

Country Status (2)

Country Link
EP (1) EP0945541A3 (fr)
IT (1) IT1299763B1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITPD20110287A1 (it) * 2011-09-12 2013-03-13 Miles S P A Metodo di finissaggio di un tessuto garzato comprendente seta e tessuto garzato ottenuto mediante detto metodo
ITUB20154285A1 (it) * 2015-10-09 2017-04-09 Lafer Spa Macchina per il trattamento di prodotti tessili

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0649929A2 (fr) * 1993-08-30 1995-04-26 SPEROTTO RIMAR S.p.A. Laineuse pour tissu en tricot avec contrôle de tension

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0649929A2 (fr) * 1993-08-30 1995-04-26 SPEROTTO RIMAR S.p.A. Laineuse pour tissu en tricot avec contrôle de tension
EP0649927A2 (fr) * 1993-08-30 1995-04-26 SPEROTTO RIMAR S.p.A. Laineuse pour tissu ou tricot avec contrôle de tension

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITPD20110287A1 (it) * 2011-09-12 2013-03-13 Miles S P A Metodo di finissaggio di un tessuto garzato comprendente seta e tessuto garzato ottenuto mediante detto metodo
ITUB20154285A1 (it) * 2015-10-09 2017-04-09 Lafer Spa Macchina per il trattamento di prodotti tessili
EP3153619A1 (fr) 2015-10-09 2017-04-12 Lafer S.p.A. Machine pour traiter des produits textiles

Also Published As

Publication number Publication date
IT1299763B1 (it) 2000-04-04
EP0945541A3 (fr) 2000-03-01
ITUD980049A0 (it) 1998-03-25
ITUD980049A1 (it) 1999-09-25

Similar Documents

Publication Publication Date Title
US4041989A (en) Forming fabric and a method for its manufacture
EP1687467B2 (fr) Adaptation des elements de carde aux effets de la dilatation thermique
EP0945541A2 (fr) Dispositif pour le grattage uniforme du centre et des lisières d'une étoffe textile
US4370937A (en) Tufting machines
KR0153461B1 (ko) 개선된 누름날을 이용한 압축장치
US2597530A (en) Method of treating fabric
US6910508B2 (en) Method for weaving a double layer cloth
US4124420A (en) Method and a device for providing woven bands or ribbons from tissue woven by a standard weaving machine
US5025644A (en) Sueding means in a textile fabric-producing machine
JPH0577787B2 (fr)
US3175224A (en) Napping machine
US3351990A (en) Method for removing floating yarn ends from a pile fabric
US6520216B2 (en) Process for obtaining a woven cloth
EP1281801B1 (fr) Dispositif d'assouplissement de surfaces pour un tricot circulaire continu
CN1109527A (zh) 起毛装置及织物起毛机
US2160989A (en) Process of treating yarns and fabrics made therefrom
KR20030023791A (ko) 음영무늬직물 및 그를 제조하기 위한 음영무늬가공장치
FI102549B (fi) Menetelmä ja laitteisto neuloksen valmistukseen ja/tai käsittelyyn
US2569897A (en) Finishing of woven fabrics
GB2114608A (en) Circular knitting machine for the production of knitted goods with combed-in fibres
EP0709510B1 (fr) Dispositif pour le déplacement latéral des tissus dans des machines de grattage
US3971418A (en) Weaving machine, apparatus and method
RU1786205C (ru) Шпарутка ткацкого станка
US4897901A (en) Machine for brushing fabrics, equipped with counter-pile workers and with teazles
EP2115195B1 (fr) Dispositif permettant de maintenir la largeur d'un tissu sur un métier à tisser

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): DE ES FR IT PT

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

17P Request for examination filed

Effective date: 20000717

AKX Designation fees paid

Free format text: DE ES FR IT PT

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20030121