EP1164103A2 - Bremse für eine selbstregulierende Fadenbremse einer Schussfadenliefervorrichtung - Google Patents
Bremse für eine selbstregulierende Fadenbremse einer Schussfadenliefervorrichtung Download PDFInfo
- Publication number
- EP1164103A2 EP1164103A2 EP01111992A EP01111992A EP1164103A2 EP 1164103 A2 EP1164103 A2 EP 1164103A2 EP 01111992 A EP01111992 A EP 01111992A EP 01111992 A EP01111992 A EP 01111992A EP 1164103 A2 EP1164103 A2 EP 1164103A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- frustum
- braking means
- braking
- drum
- shaped body
- 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
Links
Images
Classifications
-
- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D47/00—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms
- D03D47/34—Handling the weft between bulk storage and weft-inserting means
- D03D47/36—Measuring and cutting the weft
- D03D47/361—Drum-type weft feeding devices
- D03D47/364—Yarn braking means acting on the drum
- D03D47/366—Conical
Definitions
- the present invention relates to a braking means of self-adjusting thread braking devices in weft feeders for textile machines and particularly for weaving looms of the gripper or bullet type.
- the invention relates to self-adjusting braking devices of the type disclosed in Italian patents no. 1,251,209 and 1,259,567, which are referenced hereinafter as conventional devices.
- Weft feeders are devices which typically comprise a fixed cylindrical drum, on which an arm rotating in a fishing-reel fashion winds a plurality of turns of thread which constitute a weft reserve, means for producing the advancement of the turns gradually wound from the base towards the end of the drum, and braking means for braking the thread that unwinds from the drum when requested by the loom and for giving it the proper mechanical tension required for the correct unwinding of the thread.
- the braking means is substantially constituted by a frustum-shaped braking body which is suspended elastically in front of the fixed drum of the feeder, is pushed against the drum typically by the elastic suspension or by equivalent elastic means, and is tangent to the drum at an exit circumference which is slightly smaller than the maximum circumference of the drum.
- the thread slides between the drum and the frustum-shaped braking body, onto which it discharges the axial component of its tension.
- the braking body is typically provided with a metallic ring having a protruding edge which is arranged at the smaller or end section of the body and is adapted to engage the thread so as to divert its path.
- the thread discharges onto the braking body the axial component of its tension also at the end region of the body as well as at the region where it is tangent to the feeder drum, significantly improving the response of the braking device.
- the frustum-shaped body must have special mechanical characteristics, among which considerable radial elasticity and substantial axial rigidity, combined with low inertia, are particularly important.
- the frustum-shaped body by using a fabric impregnated with synthetic resins, preferably of the two-part type, or by using a calendered or laminated component made of typically thermosetting polymeric material, providing it with a wear-resistant metallic cladding on the inner side and substantially at a narrow region which straddles the circumference of contact with the drum.
- the axial strength of the frustum-shaped body in fact degrades accordingly and the body tends to undergo a deformation, flexing below the region where contact with the drum of the feeder occurs and thus losing the ability to transmit to said contact region the elastic force (so-called static tension) with which the elastic suspension means or the like press the braking body against the drum.
- an object of the invention is to provide a braking means in the form of a frustum-shaped body as specified, which is improved so as to have significantly low mass and inertia for a corresponding rapid response to variations in the mechanical tension of the thread while retaining the ability to transmit fully, in the region where the body makes contact with the drum of the feeder, the elastic pressure applied to said body by the suspension means or the like.
- a further object of the invention is to provide a braking means, in the form of a frustum-shaped body, which is highly flexible at the region of contact with the drum of the feeder astride the exit circumference of the drum in order to ensure a gradual braking action adapted even for lower-count threads.
- the invention is based on the concept of providing a braking means having a composite structure which is obtained by superimposing on a first frustum-shaped body, which is substantially flexible both radially and axially, a second frustum-shaped body which is arranged axially only in the region downstream of the feeder drum, over a portion which has a convenient length and gives said portion of the braking body the rigidity that is necessary and sufficient to transmit to the region of tangency between the braking body and the drum the action applied by elastic means that press on said braking body.
- the reference numeral 10 designates a conventional weft feeder which comprises a fixed drum 11 on which a hollow rotating arm, rigidly coupled to a rotating disk 12 arranged at the base of the drum, winds a weft reserve in the form of a plurality of turns of thread SF.
- the thread F when requested by the loom or other textile machine (not shown), unwinds from the drum, passing through a thread guide 13 which is coaxial to the drum and is subjected, in its unwinding motion, to the action of a self-adjusting braking device, generally designated by the reference numeral 14, which is designed to keep the thread under tension, automatically modulating the braking action as the advancement speed of the thread varies.
- the device 14 which is interposed between the thread guide 13 and the drum 11, comprises a braking means 15 which is constituted by a frustum-shaped body made of synthetic laminated material or fabric impregnated with polymeric resins typically of the two-part type, which is arranged so as to face the drum 11, to which it is tangent along an exit circumference CU which is slightly smaller than the maximum one.
- a braking means 15 which is constituted by a frustum-shaped body made of synthetic laminated material or fabric impregnated with polymeric resins typically of the two-part type, which is arranged so as to face the drum 11, to which it is tangent along an exit circumference CU which is slightly smaller than the maximum one.
- an annular support 16 and an elastic means 17 the body 15 is pressed against the drum 11 in order to brake with a preset elastic force, known as static tension, the thread that unwinds from the drum, and the support 16 is supported by a carriage 18 which can move axially with respect to the drum 11 by way of a
- the internal surface of the braking means 15 is provided with a metallic reinforcement lamina (not shown) and at the smaller end section of its frustum-shaped body said braking means is provided with a ring 21 which is adapted to engage the thread F and divert its path towards the thread guide 13;
- the ring 21 is formed by a conical portion 21a, which is accommodated inside the frustum-shaped body, and by a cylindrical portion 21b, which is external to the body and is screwed like a locking ring onto the portion 21a, clamping the frustum-shaped body of the braking means 15.
- the improved braking means designated by the reference numeral 15' in Figure 2, maintains the frustum-like shape of the conventional means 15 but is constituted by a composite structure which comprises a first frustum-shaped body 150, which is substantially flexible both radially and axially and protrudes axially from the ring 21 beyond the region of tangency with the drum 11 formed by the exit circumference CU of said drum.
- a second frustum-shaped body 151 cooperates with the first frustum-shaped body 150, is fitted over the first one and is arranged axially only in the region downstream of the drum 11 of the feeder, over a portion T of suitable length, for example between 50 and 80% of the distance between the ring 21 and the circumference CU of the drum 11, in order to give such portion of the body of the braking means 15' the rigidity that is necessary and sufficient to transmit to the region of tangency between the body and the drum the action applied by the elastic means 17 that press on the braking means.
- both said first and second frustum-shaped bodies 150 and 151 are made of the same material, typically fabric or calendered material impregnated with epoxy resins, more generally thermosetting resins, or calendered material made of thermoplastic resins, or sheet steel of suitable thickness.
- a combination of these materials can be used advantageously; for example, by providing the first frustum-shaped body 150 by using impregnated fabric, which is adapted for the purpose due to its greater elasticity, and by providing the second body 151 by using thermoplastic calendered material, or sheet steel, which is more rigid and therefore more adapted to transmit the elastic contact pressure applied by the braking means 15' to the drum 11.
- the two cooperating frustum-shaped bodies 150-151 can be simply arranged side by side and connected to each other by the clamping action applied by the end ring 21 or can be rigidly coupled to each other beforehand by means of an interposed layer of adhesive.
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Looms (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ITTO000514 | 2000-06-02 | ||
IT2000TO000514A IT1320497B1 (it) | 2000-06-02 | 2000-06-02 | Perfezionamento al mezzo frenante dei dispositivi di frenaturaautoregolante del filato, per apparecchi alimentatori di trama. |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1164103A2 true EP1164103A2 (de) | 2001-12-19 |
EP1164103A3 EP1164103A3 (de) | 2002-11-06 |
EP1164103B1 EP1164103B1 (de) | 2006-04-26 |
Family
ID=11457774
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP01111992A Expired - Lifetime EP1164103B1 (de) | 2000-06-02 | 2001-05-22 | Bremse für eine selbstregulierende Fadenbremse einer Schussfadenliefervorrichtung |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1164103B1 (de) |
DE (1) | DE60119032T2 (de) |
IT (1) | IT1320497B1 (de) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2006032376A1 (en) * | 2004-09-21 | 2006-03-30 | Iro Ab | Yarn braking body |
WO2006045410A1 (de) * | 2004-10-21 | 2006-05-04 | Iro Ab | Faden-bremskörper |
EP2213776A1 (de) | 2009-02-03 | 2010-08-04 | Iro Ab | Bremskörper und Garnzuführungsvorrichtung |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1994012420A1 (en) * | 1992-11-23 | 1994-06-09 | Nuova Roj Electrotex S.R.L. | Yarn feeding device |
US5673729A (en) * | 1993-02-23 | 1997-10-07 | Nuova Roj Electrotex S.R.L. | Yarn feeder with adjustable braking mechanism |
WO1998038124A1 (de) * | 1997-02-24 | 1998-09-03 | Iro Ab | Fadenliefergerät und fadenbremse |
DE29721718U1 (de) * | 1997-12-09 | 1999-04-08 | Iro Patent Ag | Fadenspeicher |
-
2000
- 2000-06-02 IT IT2000TO000514A patent/IT1320497B1/it active
-
2001
- 2001-05-22 EP EP01111992A patent/EP1164103B1/de not_active Expired - Lifetime
- 2001-05-22 DE DE60119032T patent/DE60119032T2/de not_active Expired - Lifetime
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1994012420A1 (en) * | 1992-11-23 | 1994-06-09 | Nuova Roj Electrotex S.R.L. | Yarn feeding device |
US5673729A (en) * | 1993-02-23 | 1997-10-07 | Nuova Roj Electrotex S.R.L. | Yarn feeder with adjustable braking mechanism |
WO1998038124A1 (de) * | 1997-02-24 | 1998-09-03 | Iro Ab | Fadenliefergerät und fadenbremse |
DE29721718U1 (de) * | 1997-12-09 | 1999-04-08 | Iro Patent Ag | Fadenspeicher |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2006032376A1 (en) * | 2004-09-21 | 2006-03-30 | Iro Ab | Yarn braking body |
CN101023014B (zh) * | 2004-09-21 | 2012-10-10 | Iro有限公司 | 纱线制动体 |
WO2006045410A1 (de) * | 2004-10-21 | 2006-05-04 | Iro Ab | Faden-bremskörper |
EP2213776A1 (de) | 2009-02-03 | 2010-08-04 | Iro Ab | Bremskörper und Garnzuführungsvorrichtung |
CN101823648B (zh) * | 2009-02-03 | 2012-10-10 | Iro有限公司 | 制动体与纱线供给机 |
Also Published As
Publication number | Publication date |
---|---|
EP1164103B1 (de) | 2006-04-26 |
IT1320497B1 (it) | 2003-12-10 |
DE60119032D1 (de) | 2006-06-01 |
DE60119032T2 (de) | 2006-10-26 |
ITTO20000514A1 (it) | 2001-12-02 |
ITTO20000514A0 (it) | 2000-06-02 |
EP1164103A3 (de) | 2002-11-06 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US5316051A (en) | Self-adjusting thread braking device for weft feeder units | |
JP3476461B2 (ja) | 横糸供給機 | |
EP0536088A1 (de) | Modulierte Fadenbremse für eine Schussfadenliefervorrichtung | |
EP1243542B1 (de) | Selbsteinstellende Fadenbremsvorrichtung für Fadenliefervorrichtungen | |
EP1164103B1 (de) | Bremse für eine selbstregulierende Fadenbremse einer Schussfadenliefervorrichtung | |
US6269843B1 (en) | Radial and flexible annular storage drum brake | |
KR100310952B1 (ko) | 급사장치 | |
EP0957058B1 (de) | Selbsteinstellende Fadenbremsvorrichtung für Fadenliefervorrichtungen | |
WO1995018059A1 (en) | Device to control the yarn at the outlet of yarn feeders for looms | |
EP1724384B1 (de) | Fadenbremsvorrichtung im Schussfaden-Liefergerät für Textilmaschinen | |
KR100333101B1 (ko) | 방적사 제동용 장치 및 방적사 공급 장치 | |
JPS60501907A (ja) | 織物機械特に動力織機の糸供給調整装置 | |
EP1526102B1 (de) | Bremsvorrichtung für Schussfäden für Textilmaschinen | |
CN104444589A (zh) | 带有储存滚筒的导纱器 | |
EP0951436B1 (de) | Fadenbremse für schussfadenliefervorrichtungen | |
CN111867953A (zh) | 一种用于纱线卷绕的复合刚性管 | |
CN116121935A (zh) | 圆织机飞梭变距式制动机构、飞梭机构及圆织机 |
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): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR |
|
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 TR |
|
AX | Request for extension of the european patent |
Free format text: AL;LT;LV;MK;RO;SI |
|
17P | Request for examination filed |
Effective date: 20030430 |
|
AKX | Designation fees paid |
Designated state(s): BE CH DE LI SE |
|
17Q | First examination report despatched |
Effective date: 20040226 |
|
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): BE CH DE LI SE |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: NV Representative=s name: ROTTMANN, ZIMMERMANN + PARTNER AG |
|
REG | Reference to a national code |
Ref country code: SE Ref legal event code: TRGR |
|
REF | Corresponds to: |
Ref document number: 60119032 Country of ref document: DE Date of ref document: 20060601 Kind code of ref document: P |
|
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: 20070129 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: CH Payment date: 20080429 Year of fee payment: 8 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: SE Payment date: 20080519 Year of fee payment: 8 |
|
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: LI Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20090531 Ref country code: CH Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20090531 |
|
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 NON-PAYMENT OF DUE FEES Effective date: 20090523 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20180521 Year of fee payment: 18 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: BE Payment date: 20180522 Year of fee payment: 18 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R119 Ref document number: 60119032 Country of ref document: DE |
|
REG | Reference to a national code |
Ref country code: BE Ref legal event code: MM Effective date: 20190531 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20191203 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: BE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20190531 |