EP0923502B1 - Vorrichtung zum bremsen eines fadens und fadenliefergerät - Google Patents

Vorrichtung zum bremsen eines fadens und fadenliefergerät Download PDF

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Publication number
EP0923502B1
EP0923502B1 EP97944805A EP97944805A EP0923502B1 EP 0923502 B1 EP0923502 B1 EP 0923502B1 EP 97944805 A EP97944805 A EP 97944805A EP 97944805 A EP97944805 A EP 97944805A EP 0923502 B1 EP0923502 B1 EP 0923502B1
Authority
EP
European Patent Office
Prior art keywords
braking band
bend
braking
brake band
end portion
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.)
Expired - Lifetime
Application number
EP97944805A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0923502A1 (de
Inventor
Joachim Fritzson
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.)
Iro AB
Original Assignee
Iro AB
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 Iro AB filed Critical Iro AB
Publication of EP0923502A1 publication Critical patent/EP0923502A1/de
Application granted granted Critical
Publication of EP0923502B1 publication Critical patent/EP0923502B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • 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

Definitions

  • the invention relates to a device according to the preamble of claim 1 and a yarn delivery device according to claim 16.
  • the device is of small diameter End region of the membrane connected to the brake band in such a way that the ring membrane from the large-diameter edge of the brake band to the outside extends.
  • this arrangement can result from incorrect centering the brake band on the trigger surface along the approximately linear contact zone an uneven between the brake band and the trigger surface Set the braking effect for the thread. Furthermore, the brake band twists in the Passage area of the thread, under the frictional force and the push-off force of the Thread locally against the direction of withdrawal of the thread, which is an even tension level difficult in the pulled thread.
  • a brake band the axial force load through a hollow body with the shape of a truncated cone to the brake band glued inside the hollow body.
  • the hollow body is from the outside by a spring arrangement or an annular membrane supported, which is elastic in the axial direction of the storage body, in the radial direction however, is relatively rigid.
  • the hollow body is in the axial direction stiff and elastic in the radial direction, so that the flexible brake band despite the can deform axial force locally in the passage area of the thread.
  • This Structure is multi-part.
  • the hollow body is subjected to high loads and tends to tire.
  • the device takes up a relatively large amount of space.
  • Another device known from DE-U 94 06 102 is on the outside of the brake band a foam ring glued in the large diameter end a rigid, frustoconical hollow body is held. On the hollow body attacks a spring device that generates the axial force load for the brake band. Due to the relatively strong spring arrangement, the soft foam ring badly deformed, which limits the mobility of the flexible brake band is.
  • the brake band lies on the tapered withdrawal surface of the storage body.
  • the invention has for its object a device of the aforementioned Art as well as creating a thread delivery device, where along the contact zone an even braking effect between the brake band and the trigger surface can be generated and a largely constant tension level in the drawn thread is observable.
  • the device is space-saving and consists of only two parts. Because of the bend the small-diameter end area of the ring membrane becomes the brake band no longer pulled against the fume cupboard, but pushed against it. The brake band centers perfectly during operation thanks to the bend, which means the braking effect remains constant along the contact zone. It is imaginable, that the brake band under the frictional force and the pulling force of the thread Tendency developed to localize the cone tip angle in the passage area of the thread to enlarge, i.e. to twist in the withdrawal direction.
  • the device thereby provides a self-compensation effect, i.e. the braking effect is automatically reduced when the thread tension increases, and is increased automatically when the thread tension drops.
  • the ring holder is inserted through the cross-sectional profile of the ring membrane optimally large radial area of extension of the ring membrane for the deformation used. Since the connection area is on an optimally small diameter, the flexibility or flexibility of the brake band is as little as possible affected by the ring membrane, with the inward bend in Direction to the trigger area the correct self-centering of the brake band on the Deduction area favors.
  • the main power transmission range is from the ring membrane to the brake band within the diameter of the contact zone between the brake band and the trigger surface.
  • This twists the brake band which is expediently a very thin, flexible metal body, in the passage area of the thread under greater thread loading under local enlargement of the cone apex angle in the withdrawal direction. This helps to keep it constant the thread tension at.
  • the force load is transmitted to the brake band according to claim 5 very evenly.
  • the ring membrane is very flexible in the bend, so that the inherent mobility of the brake band under the load of the thread so little is hindered as possible.
  • the arcuate bend supports the Self-centering of the brake band on the trigger surface.
  • the self-centering of the brake band is improved.
  • the flexibility or flexibility of the brake band only minimally disabled.
  • the outer bend in the transmission of the Force load on the brake band significantly deformed.
  • the deformation movements and the forces occurring in this area are so far from the brake band removed that the correct functioning of the brake band in its braking function do not interfere.
  • the bending of the ring membrane can according to claim 12 on the outside and / or attached to the inside of the brake band.
  • Glue or vulcanize lead to very homogeneous and durable connection areas. Becomes the bend attached to the inside of the brake band, then the bend engages around the small diameter edge of the brake band. Possibly the connection is made directly on the small-diameter edge of the brake band.
  • the according to claim 13 in a range of about 120 °, e.g. between 90 and 140 °, lying cone tip angle of the brake band leads to a sensitive response the device for accelerations or decelerations of the thread. At there is a precise self-centering of the brake band on the trigger surface largely constant tension level in the drawn thread.
  • the connecting section with the outer bend can be a perform an additional desirable function, namely that of a balloon restrictor, by which the thread is prevented from doing so at high take-up speed will stand out too far from the surface of the storage body.
  • the yarn delivery device according to claim 16 is thanks to a perfect self-centering of the brake band a largely constant voltage level in the pulled thread reached.
  • the device can be installed in a small space in the thread delivery device accommodate.
  • F preferably a thread delivery device for projectile or rapier weaving machines, has a schematically indicated housing 1 with a drive motor 2 for Rewinder 3 and a stationary storage body S.
  • On the housing 1 is a Housing boom 8 provided.
  • the thread Y is from a supply spool, not shown withdrawn from the left in Fig. 1 in the housing 1 and through the winding member 3 passed, which during the rotary movement of the drive motor 2 Y thread winds tangentially onto the surface 5 of the storage body (Thread supply 4).
  • Devices not shown issue the thread turns a feed movement in Fig. 1 to the right.
  • a convexly curved extraction surface 6 is provided, which is concentric with the Axis of the storage body S runs.
  • a thread guide is coaxial to the storage body S 7 provided, through which the deflected over the trigger surface 6 and pulled through the device B and thereby like a clock hand around the trigger surface 6 circumferential thread is withdrawn axially.
  • the support ring 12 supports a ring membrane R, e.g. Made of elastomeric or rubbery material, starting in cross section is approximately S-shaped.
  • the small-diameter interior of the Ring membrane R is connected to a truncated cone-shaped brake band T, which Expediently consists of thin sheet metal 19 and is very flexible, however is tensile.
  • the ring membrane has an outer retaining ring flange 13, which with the Support ring 12 is connected, and to which an external bend 14 connects.
  • the bend 14 is curved outward in the form of an arc Connecting section 15 connected to a further opposite bend 17, which is designed in the manner of a 180 ° arc and with an end part 18 by gluing or vulcanizing is connected to the brake band T.
  • the inner and outer edges 20, 21 of the brake band T are free.
  • At least one further corrugation W could be formed in the connecting section 15.
  • the brake band T forms a continuous, wear and heat resistant in the circumferential direction Braking surface 22 that extends along a contact zone 23 on the trigger surface 6 lies on.
  • the edges 20 and 21 of the brake band T which is rectilinear in cross section, are located distance from the fume cupboard 6.
  • the main part of the connection area is located between the bend 17 or the end part 18 and the brake band T. itself within the diameter of the contact area 23.
  • the axial position of the ring holder 11 set so that a predetermined axial Contact pressure for the brake band T results.
  • the brake band is deformed locally in the passage area of the thread Y. It can form a crescent-shaped opening adjacent to the thread.
  • the end part 18 and the bend 17 impair this inherent mobility of the brake band T not. If the thread is accelerated strongly or at high speed subtracted, then the frictional force exerted by the thread on the brake band T. and the push-off force is relatively high.
  • the brake band T tilts in the passage area of the thread slightly e.g. in the withdrawal direction (enlargement of the cone tip angle ⁇ ), which reduces the braking effect.
  • the forces on the Brake band after that in the passage area of the thread with reduction of the cone tip angle ⁇ twists, for example, in the opposite direction to the withdrawal direction.
  • the braking device adapts itself in this way to the respective requirements, in order to be as possible to maintain a constant tension level in the drawn thread.
  • the edge 21 of the braking edge T remains free Connection area between the end part 18 of the bend 17 and the brake band within the diameter of the contact area 23.
  • FIG. 2b engages the bend 17 with the end part 18 even around the edge 21 of the brake band T. around.
  • the transition from the end part 18 into the bend 17 is at Edge 21 of the brake band T.
  • the end part 18 covers the bend 17 almost the entire outer surface of the brake band T.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Tension Adjustment In Filamentary Materials (AREA)
EP97944805A 1996-08-29 1997-08-28 Vorrichtung zum bremsen eines fadens und fadenliefergerät Expired - Lifetime EP0923502B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19634972A DE19634972A1 (de) 1996-08-29 1996-08-29 Vorrichtung zum Bremsen eines Fadens und Fadenliefergerät
DE19634972 1996-08-29
PCT/EP1997/004698 WO1998008767A1 (de) 1996-08-29 1997-08-28 Vorrichtung zum bremsen eines fadens und fadenliefergerät

Publications (2)

Publication Number Publication Date
EP0923502A1 EP0923502A1 (de) 1999-06-23
EP0923502B1 true EP0923502B1 (de) 2001-12-12

Family

ID=7804049

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97944805A Expired - Lifetime EP0923502B1 (de) 1996-08-29 1997-08-28 Vorrichtung zum bremsen eines fadens und fadenliefergerät

Country Status (6)

Country Link
US (1) US6125892A (zh)
EP (1) EP0923502B1 (zh)
KR (1) KR100333101B1 (zh)
CN (1) CN1087707C (zh)
DE (2) DE19634972A1 (zh)
WO (1) WO1998008767A1 (zh)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE9700666D0 (sv) * 1997-02-24 1997-02-24 Iro Ab Fadenliefergerät und fadenbremse
DE19846221A1 (de) * 1998-10-07 2000-04-13 Iro Patent Ag Baar Fadenbremse und Fadenliefergerät mit einer Fadenbremse
DE19911943A1 (de) * 1999-03-17 2000-09-21 Iro Patent Ag Baar Fadenliefergerät und Fadenbremskörper
US7153691B2 (en) * 2002-11-13 2006-12-26 G6 Science Corp. Method of identifying and assessing DNA euchromatin in biological cells for detecting disease, monitoring wellness, assessing bio-activity, and screening pharmacological agents
DE102004045725A1 (de) * 2004-09-21 2006-03-23 Aktiebolaget Iro Fadenbremskörper
CN103233990B (zh) * 2013-05-07 2015-04-22 西北工业大学 一种膜片空间系绳制动器
CN106868655B (zh) * 2017-04-13 2023-09-26 江西省山星纺机实业有限公司 一种环锭纺细纱机叶子板式的假捻装置

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE534263T1 (de) * 1991-09-20 1993-09-02 L.G.L. Electronics S.P.A., Bergamo Selbstregulierende fadenbremse fuer eine schussfadenliefervorrichtung.
IT1256329B (it) * 1992-11-23 1995-11-30 Dispositivo di alimentazione di filo
IT1263623B (it) * 1993-02-23 1996-08-27 Roj Electrotex Nuova Srl Alimentatore di filo
DE4407958A1 (de) * 1994-03-09 1995-09-14 Iro Ab Fadenbremsvorrichtung
DE9406102U1 (de) * 1994-04-13 1995-08-10 Sobrevin Société de brevets industriels-Etablissement, Vaduz Fadenspeicher mit Fadenabzugsbremse
RU2129089C1 (ru) * 1995-07-24 1999-04-20 Иро Аб Устройство для подачи нити

Also Published As

Publication number Publication date
US6125892A (en) 2000-10-03
WO1998008767A1 (de) 1998-03-05
KR100333101B1 (ko) 2002-04-22
EP0923502A1 (de) 1999-06-23
KR20000035928A (ko) 2000-06-26
CN1233226A (zh) 1999-10-27
CN1087707C (zh) 2002-07-17
DE59705792D1 (de) 2002-01-24
DE19634972A1 (de) 1998-03-05

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