EP0246182B1 - Dispositif de stockage de fil de trame pour métiers à tisser - Google Patents

Dispositif de stockage de fil de trame pour métiers à tisser Download PDF

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Publication number
EP0246182B1
EP0246182B1 EP87810155A EP87810155A EP0246182B1 EP 0246182 B1 EP0246182 B1 EP 0246182B1 EP 87810155 A EP87810155 A EP 87810155A EP 87810155 A EP87810155 A EP 87810155A EP 0246182 B1 EP0246182 B1 EP 0246182B1
Authority
EP
European Patent Office
Prior art keywords
drum
braking
accumulator
weft
brake element
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
EP87810155A
Other languages
German (de)
English (en)
Other versions
EP0246182A1 (fr
Inventor
Rolf Benz
John Dalton Griffith
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.)
Sulzer AG
Original Assignee
Gebrueder Sulzer AG
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 Gebrueder Sulzer AG filed Critical Gebrueder Sulzer AG
Publication of EP0246182A1 publication Critical patent/EP0246182A1/fr
Application granted granted Critical
Publication of EP0246182B1 publication Critical patent/EP0246182B1/fr
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
    • D03D47/361—Drum-type weft feeding devices
    • D03D47/364—Yarn braking means acting on the drum
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H59/00—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators
    • B65H59/10—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators by devices acting on running material and not associated with supply or take-up devices
    • B65H59/20—Co-operating surfaces mounted for relative movement
    • B65H59/22—Co-operating surfaces mounted for relative movement and arranged to apply pressure to material
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2555/00—Actuating means
    • B65H2555/10—Actuating means linear
    • B65H2555/13—Actuating means linear magnetic, e.g. induction motors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2555/00—Actuating means
    • B65H2555/20—Actuating means angular
    • B65H2555/23—Actuating means angular magnetic, e.g. rotary solenoids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/30—Handled filamentary material
    • B65H2701/31—Textiles threads or artificial strands of filaments

Definitions

  • the invention relates to a weft store for weaving machines, to which thread is fed from a supply spool and from which thread is drawn discontinuously for entry into the shed of a weaving machine, with a drum for storing a supply of weft threads and with a braking device consisting of a rotationally symmetrical braking surface, at least an elastically deformable braking member adjustable against the braking surface and a controllable adjusting device for the braking member relative to the braking surface.
  • German patent specification 2 253 259 such a braking device on a weft thread store is described, which is formed from a ring with an elastic insert, which is axially adjustable against the drum of the weft thread store.
  • the brake disc is shifted against the drum by an angle lever via a cam drive, the kinetic energy of the disc being destroyed when it hits the circumference of the drum. The resulting impact is mitigated by the elastic insert, but the weft thread between the drum circumference and the brake disc is pinched gently.
  • Alignment errors between the axes of the drum and the brake disc can be compensated for by the elastic insert, but surface pressures of different strengths occur in the contact zone, as a result of which the weft thread is braked to different extents depending on the position on the circumference of the drum. This allows the weft thread lengths to vary from one weft to another.
  • the invention which achieves the above object, is characterized in that the adjusting device is directly linked to the action of the braking element with elastic, low-mass parts of the braking member that cling to the circumference of the braking surface.
  • the braking member can consist of a plurality of rod-like disks lying next to one another on the outer drum circumference, which are pressed against the drum circumference, for example, by the action of a magnetic field.
  • the slats can be articulated or rigidly attached to a ring surrounding the drum at one end and lie against the drum circumference under the action of magnetic forces, the weft thread being trapped between the slats and the drum and being delayed to a standstill.
  • the disk-like braking elements can also be integrated into the circumference of the drum.
  • the braking element can also be formed by a single wire loop enclosing the drum circumference, which is contracted when the braking process is initiated, whereby it rests on the entire drum circumference.
  • the braking elements As far as the braking elements can come into contact with the drum circumference, they are designed to be flexible so that they lie evenly firmly on the drum circumference.
  • the effect of the braking device can be finely dosed by the described embodiments, so that the weft thread can be braked gently at the end of the weft insertion.
  • the weft thread storage device 1 is supplied with the weft thread 21 from the thread spool 2 through a bore in the winder axis 11 and the winder arm 111. It is first placed in several loops on the left part of the drum 10 and then wound up on the right part of the drum 10 in FIG. 1 by a second winding arm 112.
  • the braking device 13 surrounds the thread take-off end of the drum 10 with an annular magnet 131 and low-mass braking members 132, which are arranged on the circumference of the drum on the annular magnet 131 and, when the magnet is excited, with their ends facing the axis of the drum on the right-hand conical drum circumference, the braking surface 103.
  • the thread 21 is clamped between the braking surface 103 and the braking members 132 and decelerated to a standstill.
  • the drum 10 is supported by a bearing 12 in the winder axis 11 and secured against rotation by known means, not shown.
  • the winder axis 11 is driven via the drive belt 31 by a controllable drive motor 3, which is connected to the controller 4 via a control line 45.
  • the motor speed is set at the beginning of the weaving process to a value corresponding to the selected speed of the machine and the width of the fabric 6. If the thread length delivered by the winder arm 111 or 112 per work cycle of the weaving machine is as large as the thread length required per weft, the winding condition of the drum 10 will not change from one weft to the other. If too little thread supply is supplied by the winder arms 111 and 112, this is indicated by a thread supply sensor 84 via a control line 48 Control 4 reported, whereupon the speed of the winder axis 11 is increased.
  • the length of the weft thread inserted by means of the main nozzle 5 is determined by the time interval between the opening of the braking device 13 and the subsequent closing.
  • the time at which the braking device 13 is opened and closed is coordinated with the respective state of the weaving machine via an angle disk 71 on the main shaft of the weaving machine 7, the angle sensor 85, the control line 47 and the control 4. While the release of the braking device and thus the release of the weft can be determined at a specific position of the angle disk 71 relative to the angle sensor 85, the time of the closing process of the braking device depends on whether the weft thread tip 22 reaches the monitoring path along the weft thread monitoring 8 to a greater or lesser extent.
  • the opening interval of the braking device can be extended somewhat for the following weft, so that the weft thread on the weaving machine side does not become too short. Conversely, the opening interval of the braking device 13 is shortened if the weft thread tip comes to a standstill close to the sensor 83.
  • the control processes described are controlled by the controller 4, which is connected to the thread sensors 81-83 by means of the control lines 41-43 and to the magnet 131 by the control line 46.
  • Fig. 2 shows on an enlarged scale compared to Fig. 1 schematically the structure of the braking device 13.
  • the magnet 131 is arranged in the form of a ring. It carries the brake members 132 articulated at 133, which are arranged closely next to one another on the entire ring circumference. They are in the position 132 ′ during the opening time of the braking device 13 and thus leave a space between the braking surface 103 and through which the weft thread 21 can run through the eyelet 14 in the direction of the main nozzle 5.
  • the magnet 131 is energized, the parts of the braking members 132 close to it are pulled towards it, whereby the braking process is initiated.
  • the braking members 132 Due to the low-mass design of the braking members 132 inertial forces of the moving parts remain largely switched off during the braking process, so that the braking force can be finely regulated with the current in the control line 46. The braking force can thus be matched to the weft yarn to be entered.
  • FIG. 3 shows an embodiment of the braking device 13, in which the braking members 132 are integrated in the drum circumference and can be pulled against the magnetic ring 131 surrounding them, as a result of which the space for thread passage is reduced.
  • the braking members 132 are oriented obliquely to the surface lines of the drum 10 so that the weft thread, which takes a curve according to the dash-dotted position 21 ′ against the drum circumference during the running, cannot get caught in the spaces between the braking members 132.
  • the right-hand end of the drum 10 here forms a disk 102, around the edge of which the weft thread is deflected in the direction of the eyelet 14. When braking, the braking members move from position 132 'to position 132.
  • the braking member 132 being formed by a wire loop. As shown in FIG. 4, it can surround the circumference of the drum 10 in several turns.
  • the ends of the braking member 132 can be provided with magnet armatures 135, which can be shifted from the dash-dotted position to the extended position in FIG. 5 in a respective armature guide 136 by a magnet 131. If the magnetic force ceases to exist, the magnet armatures 135 can be retracted into the dashed position due to the elasticity of the braking member 132.
  • the magnet armatures 135 move parallel to the arrows 137.
  • guide rings 134 can be arranged which guide the wire loop 132 in the radial and axial directions. While a simple arrangement of a braking element 132 in the form of a wrap spring is shown in FIG. 7a, a double arrangement can be seen in FIG. 7b. The same applies to the effect of this embodiment with regard to a gentle and controlled braking process for the weft thread as described above for other embodiments of the braking device.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)

Claims (5)

1. Dispositif de stockage de fil de trame pour métiers à tisser, auquel du fil (21) est délivré à partir d'une bobine de réserve (2), et à partir duquel du fil est dévidé de manière discontinue en vue de l'insertion dans la foule de tissage d'un métier à tisser, comprenant un tambour (10) d'accumulation d'une réserve (23) en fil de trame, ainsi qu'un dispositif de freinage (13) se composant d'une surface de freinage (103) à symétrie de révolution, d'au moins un organe de freinage (132) déformable élastiquement et réglable par rapport à la surface de freinage, ainsi que d'un mécanisme commandable (131 ) de réglage de l'organe de freinage par rapport à la surface de freinage, caractérisé par le fait que le mécanisme de réglage (131) est en liaison interactive directe avec des parties élastiques de l'organe de freinage, qui présentent un faible poids et épousent la forme du pourtour de la surface de freinage.
2. Dispositif de stockage selon la revendication 1, caractérisé par le fait que les parties élastiques de l'organe de freinage (132), dotées d'un faible poids, consistent en de multiples lamelles du type barrettes, appliquées en juxtaposition sur le pourtour externe (10) du tambour.
3. Dispositif de stockage selon la revendication 1, caractérisé par le fait que le mécanisme (131) de réglage de l'organe de freinage (132) est un électro-aimant.
4. Dispositif de stockage selon les revendications 1 et 2, caractérisé par le fait que les lamelles (137) sont intégrées dans le pourtour du tambour (10), et un électro-aimant annulaire ( 131 ) est disposé circon- férentiellement autour de ce tambour (10), au voisinage des lamelles (137).
5. Dispositif de stockage selon la revendication 1, caractérisé par le fait que l'organe de freinage (132) est formé par au moins une boucle ceinturant le pourtour du tambour.
EP87810155A 1986-05-15 1987-03-18 Dispositif de stockage de fil de trame pour métiers à tisser Expired - Lifetime EP0246182B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH1977/86A CH669804A5 (fr) 1986-05-15 1986-05-15
CH1977/86 1986-05-15

Publications (2)

Publication Number Publication Date
EP0246182A1 EP0246182A1 (fr) 1987-11-19
EP0246182B1 true EP0246182B1 (fr) 1990-01-31

Family

ID=4223037

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87810155A Expired - Lifetime EP0246182B1 (fr) 1986-05-15 1987-03-18 Dispositif de stockage de fil de trame pour métiers à tisser

Country Status (5)

Country Link
US (1) US4785855A (fr)
EP (1) EP0246182B1 (fr)
JP (1) JPS62276054A (fr)
CH (1) CH669804A5 (fr)
DE (1) DE3761573D1 (fr)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0759775B2 (ja) * 1986-07-15 1995-06-28 津田駒工業株式会社 流体噴射式織機の緯入れ制御装置
EP0330951B1 (fr) * 1988-03-02 1992-01-29 L.G.L. ELECTRONICS S.p.A. Dispositif alimenteur de fil, en particulier pour métiers à tisser
JPH01260038A (ja) * 1988-04-06 1989-10-17 Tagawa Kikai Kk 固定ドラム式緯糸貯留装置
JPH01321951A (ja) * 1988-06-03 1989-12-27 Gebr Sulzer Ag 緯糸蓄積装置
IT1227077B (it) * 1988-09-08 1991-03-14 Vamatex Spa Sistema per controllare la tensione della trama alimentata ad un telaio tessile senza navette.
EP0519970B1 (fr) * 1990-03-12 1998-09-23 Iro Ab Frein de sortie de fil
DE4127796A1 (de) * 1991-08-22 1993-02-25 Iro Ab Faden-fournisseur
IT1251209B (it) * 1991-09-20 1995-05-04 Lgl Electronics Spa Dispositivo di frenatura autoregolante del filato per apparecchi alimentatori di trama.
IT1263623B (it) * 1993-02-23 1996-08-27 Roj Electrotex Nuova Srl Alimentatore di filo
IT1261331B (it) * 1993-11-05 1996-05-14 Lgl Electronics Spa Perfezionamento ai dispositivi di frenatura modulata positiva del filato per apparecchi alimentatori di trama.
SE9400248D0 (sv) * 1994-01-26 1994-01-26 Iro Ab Styrbar utgångsbroms för garnmatningsanordning till textilmaskiner, i synnerhet vävmaskiner av projektil eller gripar-typ
IT1268111B1 (it) * 1994-10-10 1997-02-20 Lgl Electronics Spa Dispositivo di frenatura modulata positiva del filato, per apparecchi alimentatori di trama
DE19612720A1 (de) * 1996-03-29 1997-10-02 Iro Ab Fadenliefergerät
ITUB20152769A1 (it) * 2015-08-03 2017-02-03 Btsr Int Spa Alimentatore di filo ad accumulo con organo frenante e elementi intercambiabili
CN109750410B (zh) * 2019-03-08 2023-10-10 浙江宁巍机械科技有限公司 一种喷水织机引纬系统及其调试方法

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT284746B (de) * 1965-10-06 1970-09-25 Sulzer Ag Schußfaden-Zwischenspeicher für Webmaschinen
DE2253259C3 (de) * 1972-10-30 1978-09-14 Zbrojovka Vsetin, N.P., Vsetin (Tschechoslowakei) Vorrichtung für Düsenwebmaschinen zum Abmessen des Schußfadens bei dessen ununterbrochenem Abnehmen von einer Vorratsspule
JPS5221610B2 (fr) * 1973-04-06 1977-06-11
IT1108819B (it) * 1978-04-11 1985-12-09 Roy Electrotex Spa Dispositivo alimentatore di filato a tensione costante e regolabile,particolarmente per l'uso nelle macchine tessili e per maglieria
US4079759A (en) * 1974-08-14 1978-03-21 Zbrojovka Vsetin, Narodni Podnik Apparatus for measuring and adjusting the length of a continuously delivered weft thread
DE2555802A1 (de) * 1975-12-11 1977-06-23 Lawson Hemphill Garnspannvorrichtung fuer garnspeicher
IT1133900B (it) * 1980-10-15 1986-07-24 Roy Electrotex Spa Mezzi per effettuare la frenatura del filato in uscita in dispositivi alimentatori di filato a tensione costante e regolabile,particolarmente per macchine tessili
SU971763A1 (ru) * 1981-06-11 1982-11-07 Центральное Проектно-Конструкторское И Технологическое Бюро Министерства Легкой Промышленности Латсср Устройство дл накоплени нити во врем подачи
SE8207098D0 (sv) * 1982-12-10 1982-12-10 Iro Ab Anordning for temporer upplagring och matning av uppmetta garnlengder, foretredesvis till dysvevmaskiner
JPS59163446A (ja) * 1983-03-04 1984-09-14 多川機械株式会社 無ひ織機の緯糸貯留装置
JPS60155755A (ja) * 1984-01-20 1985-08-15 多川機械株式会社 回転ドラム式緯糸貯留装置
JPS60181348A (ja) * 1984-02-27 1985-09-17 多川機械株式会社 回転ドラム式緯糸貯留装置
DE3600066A1 (de) * 1985-05-24 1986-11-27 Harold 1000 Berlin Bob Schussfaden-zumesseinrichtung fuer duesenwebmaschinen
NL8801724A (nl) * 1988-07-07 1990-02-01 Rockwool Lapinus Bv Agroplug, agroplug-systeem en een plugstrip daarvoor.

Also Published As

Publication number Publication date
CH669804A5 (fr) 1989-04-14
US4785855A (en) 1988-11-22
DE3761573D1 (de) 1990-03-08
JPS62276054A (ja) 1987-11-30
EP0246182A1 (fr) 1987-11-19

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