WO1997036817A1 - Fadenliefergerät - Google Patents
Fadenliefergerät Download PDFInfo
- Publication number
- WO1997036817A1 WO1997036817A1 PCT/EP1997/001522 EP9701522W WO9736817A1 WO 1997036817 A1 WO1997036817 A1 WO 1997036817A1 EP 9701522 W EP9701522 W EP 9701522W WO 9736817 A1 WO9736817 A1 WO 9736817A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- band
- thread
- delivery device
- thread delivery
- ring
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H5/00—Feeding articles separated from piles; Feeding articles to machines
- B65H5/22—Feeding articles separated from piles; Feeding articles to machines by air-blast or suction device
-
- 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 thread delivery device specified in the preamble of claim 1 Art.
- the thread control element is a dimensionally stable hollow body which is mounted outside the storage drum and which is placed over the front pull-off end of the storage drum and, with its large-diameter, cylindrical end section, is the cylindrical one rule circumferential portion of the storage drum with a radial distance.
- the thread control element has the task of minimizing the balloon formation when pulling the thread out of the thread supply on the storage drum and overhead of the draw-off area into a pull-off eyelet arranged coaxially to the storage drum.
- a so-called bristle brake ring is often attached to a housing-fixed arm, the bristles of which touch the drum and brake the thread in order to ensure the required thread pull tension.
- a bristle brake ring has the mechanical disadvantage of a speed-dependent braking action, ie a braking action that increases the thread tension with increasing speed. This is disadvantageous because the pull-off voltage is approximately over a wide speed range should remain the same in order to achieve optimum entry conditions in the weaving machine.
- the object of the invention is to provide a thread delivery device of the aforementioned type, in which a largely constant thread draw tension can be achieved in a structurally simple manner with the balloon limiting function.
- the thread is drawn through between the underside of the belt and the cylindrical circumferential section of the storage drum and additionally rotates in the circumferential direction during its withdrawal movement.
- the mechanical obstacle of the tape extremely effectively suppresses the tendency of the thread to balloon.
- the contact pressure of the band on the peripheral section exerts a uniform and precisely predictable braking effect on the thread, which surprisingly remains constant when the thread speed changes. In this way, the balloon formation is suppressed by the thread control element and a largely constant thread withdrawal tension is achieved.
- the thread overcomes the elastic pre-tensioning the band on the peripheral section only in the passage area under the band, which is supported on the peripheral section adjacent to this passage area.
- the thread in the band forms, so to speak, a circumferential shaft or a crescent-shaped free space, with the deformation resistance of the band remaining essentially constant regardless of the speed. Since the normal force on the thread resulting from the pretensioning of the band against the circumferential section remains essentially constant regardless of the speed, and because of the friction factor of the thread on the band and on the circumferential section, there is the advantage of a largely constant thread pull tension. All backgrounds for this positive effect of the thread control element are not reliable to judge. However, the result of the interaction between the thread, the band and the peripheral section, ie a largely constant thread pull-off tension, is convincing. Unexpectedly, the gap between the ends of the band does not influence the constant braking effect, obviously because the thread does not perceive the circumferential interruption in the band due to the dynamic movement conditions, provided the thread direction is oblique to the direction of the circumferential gap.
- the band is expediently made of flexible metal or plastic with the specifications according to claim 2. It is conceivable to use a compo and band which contains a wear-resistant layer and, associated therewith, a further layer with different properties.
- the circumferential interruption in the band is as small as possible.
- the direction of the tape ends is selected so that the thread never passes parallel over the interruption in the circumference.
- the band is positioned on the peripheral portion solely by the frictional engagement.
- the friction at the circumferential section is used to prevent the band from moving axially under the tension of the thread.
- the belt is positioned on the storage drum by a circumferential shoulder. In this way, strips of any width and with low tension with sensitive thread material can be securely positioned.
- the position of the band is determined by the holder, which expediently enables an adjustment of the band in the longitudinal direction of the storage drum and absorbs the axial forces that occur.
- a particularly gentle thread inlet under the belt is given in the embodiment according to claim 7.
- the tension is introduced into the band only by the spring element, which bridges at least the circumferential gap of the band and pulls the two ends towards one another and in this way generates a radial contact pressure.
- the tension and thus the contact pressure of the belt can be changed by the tension adjusting device in order to be able to adapt to different take-off conditions or different thread material.
- the band is pressed so to speak radially against the circumferential portion without contact by magnetic action.
- a closed tension ring is used for tensioning the band.
- This is expediently made of a material which does not oppose any noticeable resistance to the wave deformation of the band under the action of the thread.
- the tension ring which tensions the band uniformly over the peripheral portion, can be adjusted in length in order to change the tension.
- the embodiment according to claim 13 is particularly advantageous because foam, elastomer or rubber, or also an annular helical spring, bring permanently constant spring properties, are not susceptible to contamination, and because, above all, this homogeneous material of the wave movement of the belt has negligible resistance opposed
- the alternative embodiment according to claim 14 generates the tension of the band by means of an annular membrane made of rubber or an elastomer.
- the tension is applied to the band by means of an annular body with memory or teeth.
- This tension ring can also be used to hold the band in the axial direction.
- the ring hose can already generate a circumferential tension. Depending on the degree of filling, the tension or the radial pressure can be varied and set precisely, without an independent tension adjustment device.
- the band is fixed solely by friction, under the back pressure of the storage drum.
- the band is connected to the tension ring at least in some areas, which can be favorable for assembly reasons.
- the connection can be made by in-situ foaming, vulcanization or adhesion and is therefore very uniform, as a result of which the tape has a completely uniform response to the passage of the thread.
- the tension ring is as wide as the band, then a uniform support over the width of the band is achieved. Since the band is anyway rigid due to the contact with the storage drum and the shape in the transverse direction, the clamping ring can also be narrower than the band. In the embodiment according to claim 20, the band is supported in the holder via the tension ring or by means of a support ring comprising this. No special positioning on the storage drum is required.
- the change in the tension of the band is simple by increasing or decreasing the circumferential length of the holder or the support ring of the tension ring, so that the tension ring can be more or less pretensioned.
- 1 is a schematic side view of a yarn delivery device
- FIG. 2 is a plan view of FIG. 2
- Fig. 5 a for example in Figs. 2 and 3 usable detail in one
- Fig. 12 shows a further detailed variant in a schematic representation.
- a storage drum T is mounted non-rotatably on the drive shaft 2.
- the thread Y runs from the left in the housing 1 in FIG.
- the peripheral surface 6 of the storage drum has a thread storage area 5 and a draw-off area 7.
- a cylindrical circumferential section 8 which is closed in the circumferential direction is provided in between.
- the peripheral portion 8 is surrounded by a thread control element S, which has the shape of a circumferentially extending, thin band B with a flat cross section.
- the band B is not a closed ring, but finally with the ends 16, 17, which lie opposite each other in the area of a gap 18.
- the gap 18 can run axially or, as in the case of 18 ', lie obliquely to the axis of the storage drum T.
- the gap is expediently oriented such that the thread Y drawn from the thread supply 4 passes the gap 18 obliquely and in no way parallel to the gap 18 when passing under the band B.
- the band B consists of metal, a metal alloy or plastic or is a compound band, is tensile in the longitudinal direction but flexible, so that it can be easily deformed in the radial direction of the storage drum.
- the band B comprises the peripheral section 8 with direct contact and an essentially uniform contact pressure, which is generated by a tensioning device acting on the band B.
- the tensioning device is a finite strip 30 made of elastic material, e.g. Foam, rubber or an elastomer bridging the circumferential gap 18 and adhered to the band B in areas 31, e.g. by gluing, vulcanizing or the like.
- the tape B should be homogeneous over its length, therefore a positive connection between the strip 30 and the tape B is conceivable, but not very useful.
- the length of the band B is so matched to the circumferential length of the circumferential section 8 that the ends in the circumferential gap 18 are as close as possible to one another without touching or overlapping.
- the strip 30 or the tensioning device is under tension, by means of which the band is tensioned and pressed onto the peripheral section 8 with uniform contact pressure.
- the clamping device consists of a circumferentially closed clamping ring 15, e.g. made of foam, plastic, rubber or an elastomer, which is dimensioned such that it presses the tape onto the peripheral section at least in the radial direction and, if appropriate, also generates a tension in the peripheral direction.
- the tension ring 14 in Fig. 1 is a foam ring with approximately the same width as the band.
- the foam ring 15 can be surrounded by a closed support ring on which the prestressed foam ring 15 is supported.
- the belt could be positioned on the peripheral portion with its tensioning device solely by frictional engagement.
- Fig. 1 is another type of positioning chosen because the support ring 20 is supported in an annular holder 13 which is held on a carriage 11 in the boom 9.
- the carriage 11 can expediently be displaced by means of a longitudinal adjustment device 12 in order to hold the band B in an axially optimal position in which the balloon formation of the thread Y is largely suppressed and a uniform braking effect is produced.
- the tension ring 14 in FIG. 1A is an annular rubber or elastomer membrane 19, which either only rests on the band B or is at least partially connected to it (for example vulcanized) and held in a comprehensive support ring 20 is, which in turn is supported in the holder 13.
- FIG. 2 Another embodiment is indicated in section in FIG. 2, in which the storage drum for thread separation in the thread supply 4 is formed with axially movable rods that define the peripheral surface 6 of the storage drum.
- the cylindrical peripheral section 8 In the draw-off direction of the thread behind the thread storage area 5 and in front of the draw-off area 7, the cylindrical peripheral section 8 is raised in relation to the peripheral surface 6.
- a circumferential recess e.g. a conical bevel, formed, over which the band (B) projects freely with a longitudinal edge.
- the clamping ring 14 is, for example, a rubber or elastomer band 23, which generates the contact pressure for the band B.
- a circumferential shoulder 22 can be provided in the pull-off direction behind the peripheral section 8 in order to position the band B.
- the band 23 is finally formed according to FIG. 3, ends 25 and 24 overlapping with one another, the end 24 running in between the fork-shaped end 25.
- the ends 25, 24 are here together. which is connected in order to transmit the tension of the tension ring 14 to the tape B, in the areas 26 and 27 the tension ring 14 is connected to the tape, for example by adhesive dots. Several adhesive spots can be provided distributed over the circumference. It is also conceivable to connect the tension band to the band over the entire surface.
- a tension adjusting device 29 could also be arranged in the area 28 in which the ends 24, 25 are connected to one another in order to be able to vary the tension of the tensioning ring 14.
- a holder 32 for a tensioning roller 33 is provided as tension adjustment device 29, which has an underside curvature adapted to the curvature of the band B.
- the end 25 is fixed to the holder 32.
- the end 24 can be tightened or loosened by turning the tensioning roller 23 in order to change the tension of the tensioning ring 14 or to vary the contact pressure of the belt B.
- the holder 32 can be arranged in a holder similar to the holder 13 on the boom 9.
- the clamping ring 14 (FIG. 1), which is a foam ring 15 or the like, is as wide as the band B, and the conical inlet slope 21 is indicated by dashed lines.
- the inner circumference of the foam ring 15 is measured during the shaping in such a way that it is expediently somewhat shorter than the circumferential length of the circumferential section 8, so that according to FIG. 6C the tape B overlaps with its ends before being applied to the storage drum.
- a cavity 34 can be provided in the foam ring 15. If the band B is then applied to the peripheral section according to FIG. 6B, the ends face each other and the cavity 34 is enlarged. In this way, the tension is introduced into the band B or the radial pressure force is generated uniformly and the band can work as desired.
- FIG. 6B A variant of the tension adjusting device 29 is indicated in FIG. 6B.
- the support ring 20 of the foam ring 15 is formed with a peripheral interruption, in the area between two spaced flanges an adjusting device engages in order to increase or decrease the circumferential length of the support ring and in this way to vary the pretension of the foam ring.
- this voltage adjustment device could be integrated in the holder 13 according to FIG. 1.
- Fig. 7 it is shown that the clamping ring 14, e.g. a rubber or foam ring 15, narrower than the band B.
- the support ring 20 is useful in order to be able to store the clamping ring 14.
- the band B with the clamping ring 14 is positioned on the peripheral section 8 without external support by friction or by means of the shoulder according to FIG. 2, the supporting ring 20 could also be omitted.
- a possible embodiment of the clamping ring 17 is indicated as an annular rubber membrane 19, which is also surrounded by a support ring 20 in order to be able to support the band with the clamping ring 14 in the holder.
- clamping ring 14 is an annular body 20 'with inwardly projecting teeth or spokes 35 which engage the band B and are optionally connected thereto.
- the teeth or spokes 35 are elastic and inclined with respect to the radial direction on the axis of the storage drum. Connection areas could be provided at 36.
- the clamping ring 14 is an annular hose 36 made of elastic material, for example rubber or an elastomer, the interior of which can be filled with a suitable medium, for example air, via a valve 37 in order to vary the tension of the band B.
- the clamping ring 14 is supported by a support ring 20.
- the tension ring 14 could optionally be connected to the band B at 38. It is possible to arrange the band B in the clamping ring 14 only by friction.
- the band B which is made of metal, is drawn against the peripheral section 8 by an annular magnetic arrangement 39 in the interior of the storage drum.
- the magnet arrangement 39 could consist of individual magnets 39 ′′ lined up.
- the band B here is not tensioned in the circumferential direction of the circumferential section 8, but is only pressed uniformly onto the circumferential section 8 by radial magnetic forces.
- the band can be between 5 and 55 mm wide and optionally have a wear-resistant treated or coated inner surface.
- the band should be flexible enough to be radially crescent-shaped only in some areas by the thread.
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Mechanical Engineering (AREA)
- Tension Adjustment In Filamentary Materials (AREA)
- Forwarding And Storing Of Filamentary Material (AREA)
- Package Frames And Binding Bands (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/155,528 US6213419B1 (en) | 1996-03-29 | 1997-03-25 | Elastic anti-ballooning band on a yarn feeder |
KR1019980707615A KR100305118B1 (ko) | 1996-03-29 | 1997-03-25 | 방적사공급기 |
DE59701884T DE59701884D1 (de) | 1996-03-29 | 1997-03-25 | Fadenliefergerat |
EP97916387A EP0889843B1 (de) | 1996-03-29 | 1997-03-25 | Fadenliefergerat |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19612720.3 | 1996-03-29 | ||
DE19612720A DE19612720A1 (de) | 1996-03-29 | 1996-03-29 | Fadenliefergerät |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1997036817A1 true WO1997036817A1 (de) | 1997-10-09 |
Family
ID=7789975
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP1997/001522 WO1997036817A1 (de) | 1996-03-29 | 1997-03-25 | Fadenliefergerät |
Country Status (6)
Country | Link |
---|---|
US (1) | US6213419B1 (de) |
EP (1) | EP0889843B1 (de) |
KR (1) | KR100305118B1 (de) |
CN (1) | CN1084284C (de) |
DE (2) | DE19612720A1 (de) |
WO (1) | WO1997036817A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1215151A2 (de) * | 2000-11-03 | 2002-06-19 | Iropa Ag | Fadenverarbeitendes System |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE59706664D1 (de) * | 1996-11-14 | 2002-04-25 | Iro Ab | Fadenliefergerät |
CN115892097A (zh) * | 2022-12-07 | 2023-04-04 | 湖北金龙铁路运输新材料股份有限公司 | 一种柔性捆绑紧固器 |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1760658A1 (de) * | 1968-06-15 | 1972-02-10 | Fouquet Werk Frauz & Planck | Selbstregelnde Fadenliefervorrichtung fuer Rundstrick- oder Rundwirkmaschinen |
DE2555802A1 (de) * | 1975-12-11 | 1977-06-23 | Lawson Hemphill | Garnspannvorrichtung fuer garnspeicher |
JPS59143867A (ja) * | 1983-01-31 | 1984-08-17 | Tagawa Kikai Kk | 無ひ織機における緯糸貯留装置 |
CH669804A5 (de) * | 1986-05-15 | 1989-04-14 | Sulzer Ag | |
US4926912A (en) * | 1988-03-02 | 1990-05-22 | L.G.L. Electronics S.P.A. | Weft feeding drum with laming array brake |
DE9406102U1 (de) * | 1994-04-13 | 1995-08-10 | Sobrevin Société de brevets industriels-Etablissement, Vaduz | Fadenspeicher mit Fadenabzugsbremse |
EP0680917A2 (de) * | 1994-05-02 | 1995-11-08 | Sobrevin Soc. de brevets industriels-Etablissement | Fadenspeichervorrichtung mit einstellbarem Fadenabzugswiderstand |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH523196A (de) | 1970-05-14 | 1972-05-31 | Sulzer Ag | Speichereinrichtung für fadenartiges Material |
AR207774A1 (es) * | 1974-04-10 | 1976-10-29 | Calamani S | Aparato para almacenar hilo y para entregarlo a maquinas que lo utilizan |
DE4105981C2 (de) * | 1991-02-26 | 1999-08-19 | Sipra Patent Beteiligung | Fadenliefervorrichtung |
US5316051A (en) * | 1991-09-20 | 1994-05-31 | L.G.L. Electronics S.P.A. | Self-adjusting thread braking device for weft feeder units |
SE9400248D0 (sv) * | 1994-01-26 | 1994-01-26 | Iro Ab | Styrbar utgångsbroms för garnmatningsanordning till textilmaskiner, i synnerhet vävmaskiner av projektil eller gripar-typ |
DE4407958A1 (de) * | 1994-03-09 | 1995-09-14 | Iro Ab | Fadenbremsvorrichtung |
DE19533312A1 (de) * | 1995-09-08 | 1997-05-07 | Iro Ab | Fadenliefergerät |
-
1996
- 1996-03-29 DE DE19612720A patent/DE19612720A1/de not_active Withdrawn
-
1997
- 1997-03-25 DE DE59701884T patent/DE59701884D1/de not_active Expired - Fee Related
- 1997-03-25 CN CN97193530A patent/CN1084284C/zh not_active Expired - Fee Related
- 1997-03-25 US US09/155,528 patent/US6213419B1/en not_active Expired - Fee Related
- 1997-03-25 WO PCT/EP1997/001522 patent/WO1997036817A1/de active IP Right Grant
- 1997-03-25 KR KR1019980707615A patent/KR100305118B1/ko not_active IP Right Cessation
- 1997-03-25 EP EP97916387A patent/EP0889843B1/de not_active Expired - Lifetime
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1760658A1 (de) * | 1968-06-15 | 1972-02-10 | Fouquet Werk Frauz & Planck | Selbstregelnde Fadenliefervorrichtung fuer Rundstrick- oder Rundwirkmaschinen |
DE2555802A1 (de) * | 1975-12-11 | 1977-06-23 | Lawson Hemphill | Garnspannvorrichtung fuer garnspeicher |
JPS59143867A (ja) * | 1983-01-31 | 1984-08-17 | Tagawa Kikai Kk | 無ひ織機における緯糸貯留装置 |
CH669804A5 (de) * | 1986-05-15 | 1989-04-14 | Sulzer Ag | |
US4926912A (en) * | 1988-03-02 | 1990-05-22 | L.G.L. Electronics S.P.A. | Weft feeding drum with laming array brake |
DE9406102U1 (de) * | 1994-04-13 | 1995-08-10 | Sobrevin Société de brevets industriels-Etablissement, Vaduz | Fadenspeicher mit Fadenabzugsbremse |
EP0680917A2 (de) * | 1994-05-02 | 1995-11-08 | Sobrevin Soc. de brevets industriels-Etablissement | Fadenspeichervorrichtung mit einstellbarem Fadenabzugswiderstand |
Non-Patent Citations (1)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 008, no. 274 (M - 345) 14 December 1984 (1984-12-14) * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1215151A2 (de) * | 2000-11-03 | 2002-06-19 | Iropa Ag | Fadenverarbeitendes System |
EP1215151A3 (de) * | 2000-11-03 | 2003-09-17 | Iropa Ag | Fadenverarbeitendes System |
Also Published As
Publication number | Publication date |
---|---|
EP0889843B1 (de) | 2000-06-14 |
EP0889843A1 (de) | 1999-01-13 |
DE59701884D1 (de) | 2000-07-20 |
DE19612720A1 (de) | 1997-10-02 |
KR20000005002A (ko) | 2000-01-25 |
US6213419B1 (en) | 2001-04-10 |
CN1215378A (zh) | 1999-04-28 |
CN1084284C (zh) | 2002-05-08 |
KR100305118B1 (ko) | 2001-12-12 |
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