EP0740713A1 - Eintragsystem für eine düsenwebmaschine - Google Patents
Eintragsystem für eine düsenwebmaschineInfo
- Publication number
- EP0740713A1 EP0740713A1 EP94922262A EP94922262A EP0740713A1 EP 0740713 A1 EP0740713 A1 EP 0740713A1 EP 94922262 A EP94922262 A EP 94922262A EP 94922262 A EP94922262 A EP 94922262A EP 0740713 A1 EP0740713 A1 EP 0740713A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- thread
- conveyor
- weft
- weft thread
- slip
- 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
- 238000000034 method Methods 0.000 claims abstract description 14
- 230000008569 process Effects 0.000 claims abstract description 14
- 238000009941 weaving Methods 0.000 claims abstract description 6
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 5
- 230000002093 peripheral effect Effects 0.000 claims abstract description 4
- 238000003780 insertion Methods 0.000 claims description 32
- 230000037431 insertion Effects 0.000 claims description 32
- 230000009849 deactivation Effects 0.000 claims description 2
- 230000001419 dependent effect Effects 0.000 claims description 2
- 238000005259 measurement Methods 0.000 claims 1
- 238000013022 venting Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 description 12
- 230000002349 favourable effect Effects 0.000 description 4
- 230000006870 function Effects 0.000 description 4
- 230000003993 interaction Effects 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
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
Definitions
- the invention relates to an entry system of a jet loom.
- a positive delivery mechanism is provided downstream of a measuring feeder having an engaging stopper in the thread path to the nozzle feed device of the jet loom.
- This consists either of a pair of conveyor rollers with a stationary, drivable conveyor roller and a free-running counter roller which can be pressed against the driven conveyor roller via part of an insertion process, or of a stationary, drivable conveyor roller and only over part of an insertion process the weft on the conveyor roller pressing actuator.
- the weft thread is delivered over the part of the insertion process, via which the drive is activated, exactly with the speed profile of the drive and exactly with the respective conveyor roller circumferential speed to the nozzle entry device.
- the drive of the driven conveyor roller is controlled according to a predetermined speed profile in order to relieve the nozzle insertion device when the weft thread is pulled off. Controlling the drive of the conveyor roller is complicated. It is difficult to coordinate the intervention of the positive delivery mechanism with the entry process and the engagement and disengagement of the stopper.
- a friction thread delivery device known from EP-Bl-03 87 546 for, for example, a water or air jet weaving machine
- at least two are at a distance Drums arranged around one another and partially wrapped around by the weft thread, between which the intermediate walls of the drum jacket surfaces are arranged.
- a thread brake that is independent of the web cycle and is permanently set is provided.
- the friction thread delivery device pulls the weft thread from a thread spool and delivers it to the jet loom as soon as the tension generated in the jet loom overcomes the braking effect of the thread brake arranged downstream of the friction and thread delivery device.
- the object of the invention is to reduce the number of thread breaks caused by extreme tension changes in the weft thread and the energy expenditure on the weft thread in the loom during the operation of a jet loom and to be able to increase the insertion frequency without the risk of thread breaks ⁇ nen.
- the exact dimensioning of the weft thread length takes place in the weft thread storage, delivery and measuring device.
- the tension generated by the nozzle insertion device in the weft thread is used to call up the slip conveying force, which supports the pulling off and accelerating and relieves the pressure on the nozzle insertion device.
- the slip conveyor does not work positively, but with a slip which is dependent inter alia on the weft thread tension, which is gentle on the weft thread.
- the energy expenditure for the nozzle insertion device can be noticeably reduced in order to allow a specific insertion frequency produce. Since the slip conveyor and the nozzle insertion device share the work, the weft thread is treated with care. The number of thread breaks drops significantly because the slip conveyor has a compensating effect and because the slip conveyor force is built up gently.
- the entry frequency can even be increased significantly because of the division of labor, ie a higher entry speed can be realized without danger to the weft thread.
- the slip conveying force would increase the thread tension between the slip conveyor and the weft - Increase the stop and release device significantly and damage or tear off the weft.
- the interaction of the weft stop and release device, the slip conveyor which can be deactivated despite the rotating conveyor roller, the engaging thread brake and the nozzle insertion device result in a thread breakage which is favorable with regard to thread breaks, despite the possibility of a higher insertion frequency with reduced energy expenditure for the nozzle insertion device.
- the disadvantageous action of the slip conveyor which works in dependence on the thread tension, for the weft thread does not come into play due to its deactivation at the end of the entry.
- the entry system is simple in terms of construction and control technology, because the slip conveying force builds up and breaks down solely from the interaction of the components of the entry system and does not require its own control. It is known to arrange a slip conveyor upstream of a measuring foumisseur in the thread path.
- the embodiment according to claim 2 is particularly advantageous.
- the thread brake has a double function. Towards the end of the entry, it gently consumes the energy of delaying the mass of the inserted weft thread, and at the same time deactivates the slip conveyor so that it does not damage the weft thread. In this case, either the weft thread in the slip conveyor is relieved with a downstream thread brake, so that the slip increases and the slip conveying force drops, or with the thread brake arranged in the slip conveyor, the wrapping or contact pressure on the rotating conveyor roller is eliminated.
- This is structurally simple because only the thread brake, which is almost indispensable for high thread speeds, needs to be controlled.
- the weft thread is acted upon by the slip conveying force on only one conveying roller, which is continuously driven with excess speed.
- a conventional measuring feeder is provided, one for the thread critical interaction with the slip conveyor at the end of the entry process is suppressed by deactivating the slip conveyor, for example by the thread brake then engaging, in a manner which is gentle on the weft thread.
- the measuring supplier can be placed close to the jet loom. Optimally few deflecting points in the thread path that mechanically act on the thread are required because the conveying roller gently deflects the weft thread. An optimal wrap angle on the conveyor roller can be set by the alignment of the measuring foumisseur.
- the slip conveyor force is generated on two conveyor rollers, which contributes to a desirable rapid response of the slip conveyor and distributes the mechanical load on the weft thread.
- the necessary high rotational speed of the conveyor roller or the conveyor rollers is generated in a simple and inexpensive manner.
- a turbine as a drive can use the compressed air energy that is already present on the jet loom.
- the deflection brake performs an additional function.
- the slip conveying force is not reduced by keeping the weft tension away from the conveyor roller, but rather by lifting the weft thread from the conveyor roller.
- the Umler brake performs a double function because it deactivates the slip conveyor and dampens the whip effect at the end of the entry process.
- a structurally simple and effective embodiment emerges from claim 10.
- the deflecting element of the deflecting brake releases the weft thread from the conveying roller, and at the same time, at the location of the conveying roller, it gently brakes the weft thread by deflecting.
- the retractable thread clamp acts towards the end of the insertion process and downstream of the conveyor roller in order to reduce and cancel the slip conveying force and at the same time to reduce the whip effect.
- At least one deflection element is integrated in the deflection brake in a profitable manner in order to reduce the number of frictionally To keep venes along the thread path as small as possible, to guide the weft thread cleanly and to contribute to deactivating the slip conveyor and for braking.
- the alternative embodiment according to claim 13 is favorable because the slip conveyor is deactivated without the help of the thread brake. If necessary. the controlled thread brake can then even be omitted.
- the stationary deflection elements are passive when the slip conveyor is working in order to avoid disturbing friction points in the thread path.
- the deflection points only intervene when the slip conveyor is deactivated.
- a controlled thread brake is not absolutely necessary, because its function is at least temporarily replaced by the passive deflection elements.
- FIG. 1 is a schematic side view of a weft insertion system
- FIG. 2 shows a variant of FIG. 1,
- 6A, 6B another variant, in two operating positions.
- a weft insertion system E according to FIG. 1 of a jet loom W e.g. an air or water jet weaving machine, has a shed 1 and a nozzle insertion device, consisting of a main nozzle 2 and auxiliary nozzles 3, with each of which a weft thread is inserted into the shed 1 in the entry direction e.
- a weft storage, delivery and measuring device M is provided, e.g. a usual measuring feeder F which has a drum 4 for forming a thread supply consisting of turns for the weft thread Y and a weft stop and release device S which can be controlled depending on the web cycle.
- the latter consists of a stop device 5 held stationary outside the drum 4 with a stop 6 which can be engaged and disengaged, which, in the engaged state, fixes the weft Y against a pull-off movement and, in the disengaged state, pulls the head off Weft Y allowed.
- the direction of movement of the stopper 6 is indicated by a double arrow 7.
- a slip conveyor B is provided in the thread path of the weft thread Y and a thread brake P, which can be engaged, is arranged downstream of this. Upstream and downstream of the slip conveyor B, stationary thread guide members (not shown) may be provided. 1, the slip conveyor B has two adjacent conveyor rollers R1, R2, on which the weft thread Y is deflected in each case with a predetermined wrap angle. Both conveyor rollers R1, R2 are driven continuously and in the direction of insertion, at a peripheral speed that is higher than the maximum thread insertion speed.
- the controlled thread brake T according to FIG. 1 is a so-called deflection brake D with a plurality of deflection elements 11, 12 and a drive 13 which can be actuated depending on the web cycle.
- the deflection brake D is between a passive position (shown), in which the weft thread y passes unimpeded, and a braking position (not shown) adjustable, in which the deflecting elements 11, 12 deflect and brake the weft Y in a Z-shape.
- the stopper 6 In the operating position shown in Fig. 1, the stopper 6 is just disengaged; the nozzle insertion device 2, 3 pulls on the weft thread with a force (thread tension fl). As a result, the weft thread is pressed with its thread tension against the conveying rollers R1, R2 and pulled off the drum 4 with slip, the extent of the slip or the slip conveying force f2 depending, among other things, on the thread tension fl.
- the deflection brake D Towards or at the end of the entry process, the deflection brake D is moved into the braking position and the stopper 6 is engaged simultaneously or afterwards.
- the braking effect which then sets in reduces the whip effect when the weft thread Y which has already been entered is delayed and reduces the thread tension acting in the area of the slip conveyor B to such an extent that the slip conveying force f2 drops and the stopper 6 easily stops the weft thread.
- the deflection Brake D is then adjusted to the passive position, so that a weft tension becomes effective again up to the slip conveyor B.
- the slip conveyor B draws again weft yarn Y and assists the nozzle entry device 2, 3.
- controllable thread brake T arranged downstream of the slip conveyor B is a controlled thread clamp K with clamping elements 24, 25 and a drive 26.
- the effect is similar to that of the first embodiment.
- the slip conveyor B has only one driven conveyor roller R1, around which the weft thread Y is deflected.
- the measuring feeder F is aligned with the axis 4a of its drum 4 lying approximately transversely to the direction of entry e, the conveying roller of the slip conveyor B deflecting the weft thread.
- Either a deflection brake D or a controlled thread clamp (not shown) is provided as the controlled thread brake T.
- a wrap angle of approximately 90 ° is shown. However, a larger or a smaller wrap angle can also be set. If necessary.
- at least one stationary thread guide member is provided in the thread path (not shown).
- the controlled thread brake T is arranged at the slip conveyor B or integrated in it and designed as a deflection brake D.
- the slip conveyor B has the two conveyor rollers R1, R2.
- the deflection elements 11 ', 12' of the deflection brake D are arranged such that, in the passive position of the deflection brake D shown in FIG. 6A, the weft Y freely wraps around the conveyor rollers R1, R2.
- the deflecting elements 11 ', 12' are adjusted so that the weft thread Y is at least largely released from the conveying rollers R1, R2 and at the same time braked by deflecting.
- the weft thread Y is deflected by a conveyor roller R1 similar to that in FIG. 3 by approximately 90 °.
- the conveyor roller R1 can be deactivated with the actuator 14, i.e. move away from the weft thread, swing away, and for this purpose, e.g. mounted on a lever 16 which is pivotable against the force of a spring 17.
- 9B shows the deactivated position of the conveyor roller R1.
- two conveyor rollers R1, R2 are provided as in FIGS. 1 and 2.
- the two conveyor rollers R1, R2 can be adjusted to the deactivated position shown in FIG. 5B, in which they no longer or no longer act appreciably on the weft Y and the weft Y is deflected on stationary deflecting elements 8, 10 .
- a controlled thread brake downstream of the slip conveyor B may be omitted, because in the deactivated position of the slip conveyor B there is a deflection which effects braking and which can reduce the whip effect. If a controlled thread brake is provided downstream of the slip conveyor B, this only serves to further reduce the whip effect and to brake the weft thread gently when the slip conveyor B is deactivated by means of the actuator 14.
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Looms (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4324160 | 1993-07-19 | ||
DE4324160A DE4324160A1 (de) | 1993-07-19 | 1993-07-19 | Eintragsystem für eine Düsenwebmaschine |
PCT/EP1994/002208 WO1995003442A1 (de) | 1993-07-19 | 1994-07-06 | Eintragsystem für eine düsenwebmaschine |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0740713A1 true EP0740713A1 (de) | 1996-11-06 |
EP0740713B1 EP0740713B1 (de) | 1998-04-01 |
Family
ID=6493169
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP94922262A Expired - Lifetime EP0740713B1 (de) | 1993-07-19 | 1994-07-06 | Eintragsystem für eine düsenwebmaschine |
Country Status (8)
Country | Link |
---|---|
US (1) | US5660213A (de) |
EP (1) | EP0740713B1 (de) |
JP (1) | JP3427897B2 (de) |
KR (1) | KR960703678A (de) |
CN (1) | CN1039841C (de) |
CZ (1) | CZ284532B6 (de) |
DE (2) | DE4324160A1 (de) |
WO (1) | WO1995003442A1 (de) |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19706288A1 (de) * | 1997-02-18 | 1998-08-20 | Iro Ab | Meßliefergerät |
DE10210911A1 (de) * | 2002-03-04 | 2003-09-18 | Picanol Nv | Vorrichtung zum Erfassen und/oder Einstellen einer Zugkraft in einem Faden |
US8960596B2 (en) | 2007-08-20 | 2015-02-24 | Kevin Kremeyer | Energy-deposition systems, equipment and method for modifying and controlling shock waves and supersonic flow |
EP2058423A1 (de) * | 2007-10-10 | 2009-05-13 | Iro Ab | Webmaschine, Garnzufuhrvorrichtung und Verfahren zum Einsatz eines gewobenen Garns |
CN102560835B (zh) * | 2012-03-12 | 2014-04-16 | 天津海天长丰科技开发有限公司 | 织机自动放纬、喂纬装置 |
DE102012212169A1 (de) * | 2012-07-11 | 2014-01-16 | Lindauer Dornier Gesellschaft Mit Beschränkter Haftung | Vorrichtung zum Zwischenspeichern von bandartigem Schussmaterial für eine Webmaschine und Webmaschine mit einer solchen Vorrichtung |
CN103290606B (zh) * | 2013-06-18 | 2014-08-06 | 江苏万工科技集团有限公司 | 一种纬纱速度与牵引力关系曲线测量装置 |
US10669653B2 (en) * | 2015-06-18 | 2020-06-02 | Kevin Kremeyer | Directed energy deposition to facilitate high speed applications |
CN105671749B (zh) * | 2016-01-21 | 2017-05-24 | 江苏工程职业技术学院 | 一种纱布的生产工艺 |
CN105671751B (zh) * | 2016-04-15 | 2019-09-13 | 苏州市丹纺纺织研发有限公司 | 一种滑动定位式捕纬器 |
CN109415851B (zh) * | 2016-07-06 | 2021-07-09 | 范德威尔瑞典公司 | 具有环形运行带的纬纱进给布置和用于控制该布置的方法 |
SE1650986A1 (en) * | 2016-07-06 | 2018-01-07 | Iro Ab | Weft yarn feeding arrangement with motor drive |
SE1650988A1 (en) * | 2016-08-09 | 2018-02-10 | Iro Ab | Yarn feeding device with long yarn buffer |
CN114775144A (zh) * | 2022-04-28 | 2022-07-22 | 常州市新创智能科技有限公司 | 一种剑杆机纬纱放纱方法、计算机设备及存储介质 |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE905471A (nl) * | 1986-09-23 | 1987-03-23 | Picanol Nv | Werkwijze om bij weefmaschines de lengte van de in de gaap te brengen inslagdraad te regelen en inrichtingen hierbij aangewend. |
DE3714826C1 (en) * | 1987-05-04 | 1988-06-01 | Dornier Gmbh Lindauer | Shuttleless weaving machine with a pneumatic weft-insertion device consisting of a main nozzle and of a downstream mixing tube |
US4875506A (en) * | 1987-05-27 | 1989-10-24 | Sulzer Brothers Limited | Yarn brake for a weft yarn |
SE8900006D0 (sv) * | 1988-12-31 | 1988-12-31 | Iro Ab | Anordning vid en garnlager- och matningsenhet foer textilmaskiner foeretraedesvis vaevmaskiner |
DE3908012A1 (de) * | 1989-03-11 | 1990-09-13 | Sobrevin | Liefervorrichtung fuer laufende faeden |
IT1236993B (it) * | 1989-12-29 | 1993-05-12 | Roy Electrotex Spa | Alimentatore di trama per telai di tessitura a pinze e a proiettili |
DE59103965D1 (de) * | 1990-07-05 | 1995-02-02 | Sobrevin | Liefervorrichtung für laufende Fäden. |
JP3134879B2 (ja) * | 1990-09-27 | 2001-02-13 | 津田駒工業株式会社 | 流体噴射式織機の積極フィードよこ入れ装置 |
DE4131652A1 (de) * | 1991-09-23 | 1993-04-01 | Iro Ab | Webmaschine und eintragbremse fuer webmaschinen |
SE9200526D0 (sv) * | 1992-02-20 | 1992-02-20 | Iro Ab | Eintragssystem fuer schussfaeden in eine webmaschine, insbesondere eine duesenwebmaschine |
DE4240710A1 (de) * | 1992-12-03 | 1994-06-09 | Iro Ab | Verfahren zum Steuern eines Fadenliefersystems und Fadenliefersystems |
-
1993
- 1993-07-19 DE DE4324160A patent/DE4324160A1/de not_active Withdrawn
-
1994
- 1994-07-06 CN CN94193110A patent/CN1039841C/zh not_active Expired - Fee Related
- 1994-07-06 CZ CZ96163A patent/CZ284532B6/cs not_active IP Right Cessation
- 1994-07-06 EP EP94922262A patent/EP0740713B1/de not_active Expired - Lifetime
- 1994-07-06 DE DE59405606T patent/DE59405606D1/de not_active Expired - Fee Related
- 1994-07-06 US US08/586,843 patent/US5660213A/en not_active Expired - Fee Related
- 1994-07-06 JP JP50489495A patent/JP3427897B2/ja not_active Expired - Fee Related
- 1994-07-06 WO PCT/EP1994/002208 patent/WO1995003442A1/de active IP Right Grant
-
1996
- 1996-01-19 KR KR1019960700352A patent/KR960703678A/ko not_active Application Discontinuation
Non-Patent Citations (1)
Title |
---|
See references of WO9503442A1 * |
Also Published As
Publication number | Publication date |
---|---|
CZ16396A3 (en) | 1996-04-17 |
WO1995003442A1 (de) | 1995-02-02 |
US5660213A (en) | 1997-08-26 |
JPH09500426A (ja) | 1997-01-14 |
KR960703678A (ko) | 1996-08-31 |
DE4324160A1 (de) | 1995-01-26 |
DE59405606D1 (de) | 1998-05-07 |
CZ284532B6 (cs) | 1998-12-16 |
CN1129466A (zh) | 1996-08-21 |
JP3427897B2 (ja) | 2003-07-22 |
EP0740713B1 (de) | 1998-04-01 |
CN1039841C (zh) | 1998-09-16 |
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