EP1529862A1 - Verfahren zum Wiederanlaufen einer Webmaschine nach einem Stillstand und/oder einer Änderung der Position der Kette - Google Patents

Verfahren zum Wiederanlaufen einer Webmaschine nach einem Stillstand und/oder einer Änderung der Position der Kette Download PDF

Info

Publication number
EP1529862A1
EP1529862A1 EP03425726A EP03425726A EP1529862A1 EP 1529862 A1 EP1529862 A1 EP 1529862A1 EP 03425726 A EP03425726 A EP 03425726A EP 03425726 A EP03425726 A EP 03425726A EP 1529862 A1 EP1529862 A1 EP 1529862A1
Authority
EP
European Patent Office
Prior art keywords
loom
initial
image
restarting
adjustment
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
EP03425726A
Other languages
English (en)
French (fr)
Other versions
EP1529862B1 (de
Inventor
Giuseppe Casarotto
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.)
Promatech SpA
Original Assignee
Promatech 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 Promatech SpA filed Critical Promatech SpA
Priority to EP03425726A priority Critical patent/EP1529862B1/de
Priority to AT03425726T priority patent/ATE361385T1/de
Priority to ES03425726T priority patent/ES2287442T3/es
Priority to DE60313619T priority patent/DE60313619T2/de
Publication of EP1529862A1 publication Critical patent/EP1529862A1/de
Application granted granted Critical
Publication of EP1529862B1 publication Critical patent/EP1529862B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03J—AUXILIARY WEAVING APPARATUS; WEAVERS' TOOLS; SHUTTLES
    • D03J1/00—Auxiliary apparatus combined with or associated with looms
    • D03J1/007—Fabric inspection on the loom and associated loom control
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D51/00—Driving, starting, or stopping arrangements; Automatic stop motions
    • D03D51/002—Avoiding starting marks
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D51/00—Driving, starting, or stopping arrangements; Automatic stop motions
    • D03D51/007—Loom optimisation

Definitions

  • the present invention relates to a method for controlling the starting position of a weaving loom after stopping, in particular a method for restarting the weaving loom after stopping in view of an adjustment.
  • the rotation angle described by the main shaft of the loom during down time i.e. during the time between two steady conditions
  • is tracked for example by means of an encoder, to be later reproduced backwards by the main motor.
  • this approach should achieve the desired result, especially thanks to the inherent control accuracy of modern encoders and electric motors.
  • phase displacement between initial "mechanical” condition and initial “textile” condition may also be of a minimal extent (being the larger, the more elastic the yarn is), but in any case it inevitably causes defects in the fabric (commonly referred to as “overhead beating” defects and "open space in cloth”) which it is desirable to eliminate.
  • the warp chain runs from the let-off cylinder 1 to the fabric-tensioning roller 2, passing through the weaving area where the weaving machine is located.
  • the position in which the fabric is actually originated corresponds with the reed beating line, i.e. the line along which the last weft thread inserted is beaten onto the cloth.
  • an image acquisition device or camera 3 capable of taking up at least a portion of the fabric travelling in front of a window frame which is fixed with respect to the loom reference, preferably a small window frame of limited size, advantageously smaller than 10x10 cm and, for example, measuring about 2x2 cm.
  • the image of the fabric preferably in a digital format, is then managed and processed, for example keeping only a thin linear scanned image thereof in the warp direction.
  • the image of the fabric is acquired at preset times by a digital taking up system, for example the acquisition device described in the Italian patent application simultaneously filed by the same Applicant.
  • the method of the invention provides that, when the loom is stopped for the required adjustments, a digital image of the framed fabric portion is acquired through the taking up device: such digital image is kept at least temporarily in a memory area, for example either in a RAM of a suitable integrated circuit, or in a RAM or a hard disk of a computer connected to the acquisition device.
  • the loom is brought back to the conditions in which it was at the time of stopping, using known methods, for example causing the loom motor to reproduce backwards the rotation angle detected by an encoder integral with the main shaft.
  • the loom control system instructs the taking up device to acquire a second image of the framed fabric portion, which is compared against the first image stored in the memory area.
  • the comparison between the two images occurs by means of suitable numerical algorithms so that it may be established whether there is a perfect match - except for a tolerance factor set beforehand - or whether the two images are so different that adjustment is required.
  • the amount and direction of correction is obtained by which the warp chain must be shifted to bring the leading edge of the cloth back to exactly the same position it was in when the loom was stopped.
  • the numerical comparison between the two digital images can be performed in a variety of ways, some of which are immediately available to a person skilled in the field of computerised anticounterfeiting systems.
  • a possible comparison method for example, consists in identifying the position of light intensity peaks in each image compared against a fixed reference, for example the edge of the acquisition window frame of the taking up device: from the difference in the peak positions in the two images and from the enlarging rate at which the fabric image is acquired, it is possible to determine the amount and direction by which the loom must be moved forwards or backwards, with respect to the mechanical condition existing at the time when the loom was stopped, in order to reset the initial "textile" condition.
  • the measure of the adjustment, processed by the central control system of the loom on the basis of the comparison of the two images and transmitted to the loom motors, can be slightly larger than that calculated strictly on the basis of the phase shift existing between the two images, for example to take into account the elasticity of the actual warp chain and the remarkable friction existing between the cloth and the bench in nearly static conditions.
  • the adjustment can be carried out through two or more iterative steps between which the image comparison phase is repeated.
  • the fabric portion whose image is acquired lies in a position as close as possible to the leading edge of the cloth, so as to increase accuracy when resetting the initial conditions: in fact, this avoids residual positioning errors deriving from the elasticity of the cloth portion between the acquisition window frame and the beating line.
  • control system provides to restart the loom.
  • the set objects are thus achieved, since the method allows to reset - after loom stopping and adjustment intervention affecting a displacement of the warp chain - not only the initial "mechanical” condition, but also - most importantly - the initial "textile” condition.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
EP03425726A 2003-11-10 2003-11-10 Verfahren zum Wiederanlaufen einer Webmaschine nach einem Stillstand und/oder einer Änderung der Position der Kette Expired - Lifetime EP1529862B1 (de)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP03425726A EP1529862B1 (de) 2003-11-10 2003-11-10 Verfahren zum Wiederanlaufen einer Webmaschine nach einem Stillstand und/oder einer Änderung der Position der Kette
AT03425726T ATE361385T1 (de) 2003-11-10 2003-11-10 Verfahren zum wiederanlaufen einer webmaschine nach einem stillstand und/oder einer änderung der position der kette
ES03425726T ES2287442T3 (es) 2003-11-10 2003-11-10 Metodo para reiniciar un telar despues de una parada y/o un cambio de posicion de la cadena de urdimbre.
DE60313619T DE60313619T2 (de) 2003-11-10 2003-11-10 Verfahren zum Wiederanlaufen einer Webmaschine nach einem Stillstand und/oder einer Änderung der Position der Kette

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP03425726A EP1529862B1 (de) 2003-11-10 2003-11-10 Verfahren zum Wiederanlaufen einer Webmaschine nach einem Stillstand und/oder einer Änderung der Position der Kette

Publications (2)

Publication Number Publication Date
EP1529862A1 true EP1529862A1 (de) 2005-05-11
EP1529862B1 EP1529862B1 (de) 2007-05-02

Family

ID=34429640

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03425726A Expired - Lifetime EP1529862B1 (de) 2003-11-10 2003-11-10 Verfahren zum Wiederanlaufen einer Webmaschine nach einem Stillstand und/oder einer Änderung der Position der Kette

Country Status (4)

Country Link
EP (1) EP1529862B1 (de)
AT (1) ATE361385T1 (de)
DE (1) DE60313619T2 (de)
ES (1) ES2287442T3 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106937046A (zh) * 2017-03-07 2017-07-07 广东创达自动化装备有限公司 圆纬机布面实时图像的获取装置及方法

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2663275C (en) 2007-08-03 2015-04-28 Charles A. Glew Compositions for compounding, extrusion and melt processing of foamable and cellular fluoropolymers

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE486590C (de) * 1929-11-21 Ver Seidenwebereien A G Vorrichtung fuer Webstuehle zum Beobachten der Schussanschlagstelle
US4582095A (en) * 1983-10-07 1986-04-15 Asea Aktiebolag Fabric monitoring means for power looms
CH668997A5 (en) * 1985-12-16 1989-02-15 Zellweger Uster Ag Re-start working parameter control - for weaving loom by warp tension sensor and microcomputer with memory
JPH0465555A (ja) * 1990-07-05 1992-03-02 Tsudakoma Corp 織機の織段防止装置
US5520224A (en) * 1994-05-09 1996-05-28 Sulzer Rueti Ag Method and weaving machine for monitoring the fell position following weaving operation interuption

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE486590C (de) * 1929-11-21 Ver Seidenwebereien A G Vorrichtung fuer Webstuehle zum Beobachten der Schussanschlagstelle
US4582095A (en) * 1983-10-07 1986-04-15 Asea Aktiebolag Fabric monitoring means for power looms
CH668997A5 (en) * 1985-12-16 1989-02-15 Zellweger Uster Ag Re-start working parameter control - for weaving loom by warp tension sensor and microcomputer with memory
JPH0465555A (ja) * 1990-07-05 1992-03-02 Tsudakoma Corp 織機の織段防止装置
US5520224A (en) * 1994-05-09 1996-05-28 Sulzer Rueti Ag Method and weaving machine for monitoring the fell position following weaving operation interuption

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 016, no. 269 (C - 0952) 17 June 1992 (1992-06-17) *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106937046A (zh) * 2017-03-07 2017-07-07 广东创达自动化装备有限公司 圆纬机布面实时图像的获取装置及方法
CN106937046B (zh) * 2017-03-07 2023-07-25 广东创达自动化装备有限公司 圆纬机布面实时图像的获取装置及方法

Also Published As

Publication number Publication date
DE60313619D1 (de) 2007-06-14
EP1529862B1 (de) 2007-05-02
ES2287442T3 (es) 2007-12-16
DE60313619T2 (de) 2008-01-31
ATE361385T1 (de) 2007-05-15

Similar Documents

Publication Publication Date Title
US5228480A (en) Pick finding apparatus for electric motor driven heald frames
EP1529862B1 (de) Verfahren zum Wiederanlaufen einer Webmaschine nach einem Stillstand und/oder einer Änderung der Position der Kette
US4569373A (en) Terrycloth weaving machine
EP0208366B1 (de) Verfahren zur Regelung des Standortes der Webfach-Scheitelinie, Brustbaum und Brustbaumantrieb in Webmaschinen
US5386855A (en) Device for automatically varying the position of the shed vertex in a loom
US6155309A (en) Settable weft clamping and severing apparatus
FR2569431A1 (fr) Dispositif enrouleur de tissu adapte a une machine a tisser
JP4142474B2 (ja) 織機の織り段防止方法及び装置
BE1015635A3 (fr) Procede de controle d'un galet de guidage et de tension.
EP1331295A2 (de) Verfahren und Vorrichtung zum Vermeiden von Schussstreifen in einer Webmaschine
JP2001506715A (ja) 織機用の耳挿入装置
JPH04281046A (ja) 織機における織段発生防止装置
EP1464745A2 (de) Vorrichtung für das Vermeiden von Schussbanden
JPH0450346A (ja) 織機における製織条件調整設定装置
JPH04177109A (ja) 布目曲がり検出装置
JP2004339656A (ja) 経糸制御方法及び装置
US3727648A (en) Weaving of ribbons
JP2623666B2 (ja) 織機における織段発生防止装置
US7299827B1 (en) Loom restarting method
EP1101852B1 (de) Verfahren zur Steuerung der Kettspannung
JP2623669B2 (ja) 織機における織段発生防止方法
JP2886616B2 (ja) 織機の制御方法および装置
JP2712292B2 (ja) 織機における織段発生防止方法
JP2638794B2 (ja) 織機の織前位置制御装置
JP2718056B2 (ja) 織機における織段発生防止方法

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: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL LT LV MK

17P Request for examination filed

Effective date: 20051026

AKX Designation fees paid

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20070502

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

REF Corresponds to:

Ref document number: 60313619

Country of ref document: DE

Date of ref document: 20070614

Kind code of ref document: P

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20070802

REG Reference to a national code

Ref country code: CH

Ref legal event code: NV

Representative=s name: PATENTANWAELTE SCHAAD, BALASS, MENZL & PARTNER AG

ET Fr: translation filed
NLV1 Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20070502

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2287442

Country of ref document: ES

Kind code of ref document: T3

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20070502

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20070802

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20070502

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20070502

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20071002

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20070502

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20070502

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

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

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20080205

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20070803

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20070502

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20071130

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20071110

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20071112

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20071110

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20070502

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 20081117

Year of fee payment: 6

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20070502

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20071110

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: HU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20071103

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20110401

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20110322

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20091111

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: TR

Payment date: 20081111

Year of fee payment: 6

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20111109

Year of fee payment: 9

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: TR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20091110

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20130731

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20121130

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 20141119

Year of fee payment: 12

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20151130

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20151130

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20221026

Year of fee payment: 20

Ref country code: DE

Payment date: 20221024

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 20221118

Year of fee payment: 20

REG Reference to a national code

Ref country code: DE

Ref legal event code: R071

Ref document number: 60313619

Country of ref document: DE

REG Reference to a national code

Ref country code: BE

Ref legal event code: MK

Effective date: 20231110