EP0828879A1 - Schussfadenverteilvorrichtung einer reihenfachwebmaschine - Google Patents
Schussfadenverteilvorrichtung einer reihenfachwebmaschineInfo
- Publication number
- EP0828879A1 EP0828879A1 EP96908999A EP96908999A EP0828879A1 EP 0828879 A1 EP0828879 A1 EP 0828879A1 EP 96908999 A EP96908999 A EP 96908999A EP 96908999 A EP96908999 A EP 96908999A EP 0828879 A1 EP0828879 A1 EP 0828879A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- weft
- connecting channel
- weft thread
- weaving rotor
- thread
- 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
- 238000005520 cutting process Methods 0.000 claims abstract description 19
- 238000009941 weaving Methods 0.000 claims description 22
- 230000007704 transition Effects 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 238000007664 blowing Methods 0.000 claims description 2
- 238000003780 insertion Methods 0.000 description 3
- 230000037431 insertion Effects 0.000 description 3
- 244000208734 Pisonia aculeata Species 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000003213 activating effect Effects 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D41/00—Looms not otherwise provided for, e.g. for weaving chenille yarn; Details peculiar to these looms
- D03D41/005—Linear-shed multiphase looms
Definitions
- the invention relates to a weft distributing device of a row shed loom with a feed nozzle and with an injector nozzle, which blow a weft against the direction of rotation of a weaving rotor into a connecting channel between a stationary ring part and a weaving rotor, the weft being deflected out of the connecting channel into a weft tube and after its entry seen in the direction of entry, it is clamped and cut behind the shooting tube in order to suck back a new weft thread tip and blow it into another shooting tube against the direction of rotation of the weaving rotor.
- This object is achieved in that, seen in the weft direction, a cutting device and then a clamping device are spatially connected to the shooting tube, and in terms of time there is a retraction force in the connecting channel before the weft thread is clamped, which supports braking in the clamping device and formation of a loop during cutting between shot tube and clamping device prevented.
- This arrangement has the advantage that the weft thread is braked and tensioned in the compartment towards the end of the inlet and, after its mechanical clamping in the clamping device, no longer runs to the clamping device.
- the actual stop blow is generated and intercepted by the clamping device, while the retraction force is so great that it prevents the small thread mass between the connecting channel and the clamping device from running on, in order to enable cutting of the weft thread in the tensioned state.
- the accuracy of the cutting also depends on the repetition accuracy when activating the injector nozzles and any additional nozzles. It is therefore advantageous to generate the air pulses by means of an open control chain and kinematic linking of the control valves with the rotary movement of the weaving rotor. Since several weft threads have to be braked, pretensioned and reversed one after the other, a rotary slide valve, which assigns the air pulses in succession to the nozzles responsible for the different weft threads, is a particularly cost-effective and precise solution. Due to the fact that an element with a small variation in its opening and closing characteristics controls all injector nozzles or all additional nozzles, the repetition accuracy is high. In addition, by adjusting this one element, the impulse for all nozzles connected to it can be changed.
- FIGS. 1 to 4 each schematically show a developed section transverse to the parting plane between
- FIG. 5 shows a rotary valve which is kinematically connected to a weaving rotor via gear wheels and which can feed out different injector nozzles in succession in one cycle.
- the figures are a weft distributing device for a row shed weaving machine, in which a weft thread is fed into a connecting channel via a feed nozzle and within the connecting channel
- Gun tubes are distributed.
- a cutting device is arranged spatially between the insertion tube and the clamping device, so that before the weft thread is stopped by the clamping device, a pull-back force and a loop under this pull-back force are already formed by means of the feed nozzle and injector nozzle .
- the thread is pre-tensioned in the cutting device and can be cut without any problems.
- the loop stretches and a new weft tip is inserted into the next shooting tube.
- a takeover ring 20 connected to the weaving rotor 8 rotates in the direction of rotation 7 and rotates with little play in a parting plane 13 to a stationary ring part 11.
- the connecting channel 3 arranged on a certain radius is through a pocket 21 in the stationary ring part 11 and through a cut groove 14 formed in the acquisition part 20.
- the channel 14 is interrupted only in the area of the scraper shoulders 10.
- a weft thread 9 is delivered at a constant speed via a feed nozzle 1 and blown into the connecting channel 3 at an acute angle counter to the direction of rotation 7 of the over ring 20.
- an injector nozzle 2 is provided coaxially with the feed nozzle 1.
- an additional nozzle 16 is mounted in the fixed ring part 11 behind the pocket 21, which can blow against the direction of rotation in the rotating channel 14 to the Support the transport of the weft thread during reversing.
- stripping shoulders 10 each direct the air flow and the weft thread 9 into the insertion tubes 4, from which the weft thread is transported past a clamping device 6, 6 ′ into a row compartment of the weaving rotor.
- the groove 14 is recessed deeper and provided at its base with relief openings 18 in order to facilitate the deflection of the air flow and weft thread into the shooting tube 4 '.
- Additional nozzle 16 only becomes effective when the lower part of the channel 14 moves into the area of the pocket 21 and a continuously large cross section is created in the connecting channel 3 (FIG. 3).
- the weft thread 9 runs unhindered from the feed nozzle 1 against the direction of rotation 7 into the connecting channel 3 and further into the shoot tube 4 and a row compartment (not shown).
- the open clamping device 6 is shown as rotating, while the cutting device is shown as stationary.
- the deflection into the shooting tube takes place along the stripping shoulder 10, which forms an obtuse angle 12 (FIG. 3) to the parting plane 13.
- the connecting channel is closed except for the little recessed part of the channel 14, so that the
- the weaving rotor 8 with the takeover ring 20 has already moved noticeably towards the open cutting device 5.
- the additional nozzle 16 can be actuated in order to generate a negative pressure in the region of a slope 22, which supports the reversal when the larger cross section is created in the connecting channel 3 (FIG. 3).
- Feed nozzle 1 and injector nozzle 2 if the latter already is pressed, still blow against the slope from the obtuse angle 12 of the stripping shoulder.
- the edge of the stripping shoulder 10 has moved out of the air jet from the feed nozzle 1 and injector nozzle 2.
- the connecting channel 3 has opened towards the additional nozzle 16, so that a continuous flow into the injection tube 'arises and a loop 19 forms in the direction of this flow, at which a retraction force 15 occurs.
- This retraction force 15 has a braking effect on the weft thread 9 in the shooting tube 4. If the weft thread 9 is now stopped with the clamping device 6, the retraction force 15 is sufficient to hold the short piece of thread up to the clamping device 6 under tension and a thread loop in the area of the To prevent cutting device. It can be cut and the newly created weft tip 17 is pulled back into the connecting channel 3 until the loop 19 is stretched against the direction of rotation 7 and the new weft is inserted into the shooting tube 4 'and further into a new row compartment, not shown here.
- each injector nozzle 2 In order to generate a retraction force 15 before cutting the weft thread at the right moment with the aid of the injector nozzles 2, each injector nozzle 2 must have a certain angular distance between the edges of the
- Scraper shoulders 10 receive a precisely defined air pulse.
- the rotary valve 23 is fastened with its housing base 24 to the side wall 29 of a series shed loom in such a way that its drive gear 32 engages with a gear 33 of the weaving rotor.
- a central part 25 and a cover 26 designed as a bearing bracket with the housing base 24 are above the housing seals 27, 28
- a shaft 34 is mounted in the cover 26 by means of bearings 37 and secured axially with a spacer bush 38 and securing elements 39.
- the gear 32 is fastened on the drive side with a nut 35.
- a plastic disk 40 is fastened on the shaft 34 within the housing 24, 25 with a pin 42, the disk 40 sealingly abutting the middle part 25.
- the disk has an opening 41 which, during rotation, is arranged at regular intervals on a circle behind it
- Recesses 43 sweeps in the central part 25 and each generates an air pulse for the time of opening 41 and cutouts 43.
- the number of cutouts 43 corresponds to the number of injector nozzles 2 in the fixed ring part 11 (FIG. 3).
- the air pulse is forwarded in the central part 25 via radial channels 44 to the respective pulse lines, for which only the connection bores 31 are shown here. If the impulse lines are also of the same length, then the air impulses arrive at the injector nozzles 2 in the same way and with high precision at the intended time. Thanks to the direct drive via the web rotor, the impulses are correctly synchronized even when the speed changes and when starting. Furthermore, the simple mechanics are characterized by high operational reliability over long time intervals.
- One Overuse of the friction points and an enlargement of the sealing gap between the disk 40 and the central part 25 can be prevented if the disk 40 is applied with a metered axial force, for example because of different pressures on the
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Looms (AREA)
Abstract
Description
Claims
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH163495 | 1995-06-02 | ||
CH163495 | 1995-06-02 | ||
CH1634/95 | 1995-06-02 | ||
PCT/CH1996/000156 WO1996038612A1 (de) | 1995-06-02 | 1996-04-26 | Schussfadenverteilvorrichtung einer reihenfachwebmaschine |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0828879A1 true EP0828879A1 (de) | 1998-03-18 |
EP0828879B1 EP0828879B1 (de) | 1999-09-15 |
Family
ID=4215043
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96908999A Expired - Lifetime EP0828879B1 (de) | 1995-06-02 | 1996-04-26 | Schussfadenverteilvorrichtung einer reihenfachwebmaschine |
Country Status (6)
Country | Link |
---|---|
US (1) | US5937913A (de) |
EP (1) | EP0828879B1 (de) |
JP (1) | JP3498799B2 (de) |
AU (1) | AU5267896A (de) |
DE (1) | DE59603083D1 (de) |
WO (1) | WO1996038612A1 (de) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE59707877D1 (de) * | 1997-11-28 | 2002-09-05 | Sulzer Textil Ag Rueti | Verfahren und Vorrichtung zum Eintragen eines Schussfadens in einer Reihenfachwebmaschine |
JP2000064154A (ja) * | 1998-08-19 | 2000-02-29 | Sulzer Rueti Ag | 直列杼口織機の緯糸挿入装置及び該装置を有する直列杼口織機 |
EP0980923A1 (de) * | 1998-08-19 | 2000-02-23 | Sulzer Rüti Ag | Vorrichtung zum Eintragen von Schussfäden für eine Reihenfachwebmaschine und Reihenfachwebmaschine mit einer Vorrichtung |
EP1048766A3 (de) * | 1999-04-21 | 2001-06-06 | Sulzer Textil Ag | Verfahren zum Eintragen eines Schussfadens in eine Reihenfachwebmaschine |
DE50006883D1 (de) * | 1999-12-22 | 2004-07-29 | Sultex Ag Rueti | Stationäres Fadenführungselement |
DE502007002850D1 (de) * | 2006-11-29 | 2010-04-01 | Itema Switzerland Ltd | Fadenfang -Vorrichtung und -Verfahren für eine Greiferwebmaschine |
US20090247101A1 (en) * | 2008-03-28 | 2009-10-01 | Ligang Zhang | Auto-detection of broadcast channel spacing |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0143860B1 (de) * | 1983-12-01 | 1986-09-03 | Maschinenfabrik Sulzer-Rüti Ag | Schussfadenaufbereitungsvorrichtung für Reihenfachwebmaschinen |
DE3373504D1 (en) * | 1983-12-01 | 1987-10-15 | Rueti Ag Maschf | Weft cutter for looms, especially for linear multiple shed looms |
JP2848684B2 (ja) * | 1989-11-16 | 1999-01-20 | ゲブリユーダー ズルツアー アクチエンゲゼルシヤフト | よこ糸分配機構 |
DE59206061D1 (de) * | 1992-08-28 | 1996-05-23 | Rueti Ag Maschf | Webrotor für eine Reihenfachwebmaschine |
DE59307393D1 (de) * | 1993-05-13 | 1997-10-23 | Rueti Ag Maschf | Schussfadenverteilvorrichtung für eine Reihenfachwebmaschine und Reihenfachwebmaschine mit Schussfadenverteilvorrichtung |
DE59307432D1 (de) * | 1993-05-13 | 1997-10-30 | Rueti Ag Maschf | Schussfadenverteilvorrichtung für eine Reihenfachwebmaschine und Reihenfachwebmaschine mit Schussfadenverteilvorrichtung |
JP2003104343A (ja) * | 2001-09-26 | 2003-04-09 | Yoshino Kogyosho Co Ltd | ボトル型容器 |
US6961604B1 (en) * | 2001-10-09 | 2005-11-01 | Koninklijke Philips Electroncis N.V. | Wireless controller and application interface for an MRI system |
-
1996
- 1996-04-26 AU AU52678/96A patent/AU5267896A/en not_active Abandoned
- 1996-04-26 US US08/973,183 patent/US5937913A/en not_active Expired - Fee Related
- 1996-04-26 DE DE59603083T patent/DE59603083D1/de not_active Expired - Fee Related
- 1996-04-26 EP EP96908999A patent/EP0828879B1/de not_active Expired - Lifetime
- 1996-04-26 WO PCT/CH1996/000156 patent/WO1996038612A1/de active IP Right Grant
- 1996-04-26 JP JP53606596A patent/JP3498799B2/ja not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
See references of WO9638612A1 * |
Also Published As
Publication number | Publication date |
---|---|
DE59603083D1 (de) | 1999-10-21 |
JPH11505894A (ja) | 1999-05-25 |
JP3498799B2 (ja) | 2004-02-16 |
EP0828879B1 (de) | 1999-09-15 |
WO1996038612A1 (de) | 1996-12-05 |
AU5267896A (en) | 1996-12-18 |
US5937913A (en) | 1999-08-17 |
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