EP0119122B1 - Vorrichtung zum Übertragen des Schussfadens an der Eintragsnadel einer Webmaschine und mit einer solchen Vorrichtung versehene Webmaschine - Google Patents

Vorrichtung zum Übertragen des Schussfadens an der Eintragsnadel einer Webmaschine und mit einer solchen Vorrichtung versehene Webmaschine Download PDF

Info

Publication number
EP0119122B1
EP0119122B1 EP19840400333 EP84400333A EP0119122B1 EP 0119122 B1 EP0119122 B1 EP 0119122B1 EP 19840400333 EP19840400333 EP 19840400333 EP 84400333 A EP84400333 A EP 84400333A EP 0119122 B1 EP0119122 B1 EP 0119122B1
Authority
EP
European Patent Office
Prior art keywords
weft
loom
frame
carried
presenting
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
Application number
EP19840400333
Other languages
English (en)
French (fr)
Other versions
EP0119122A1 (de
Inventor
Yves Juillard
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.)
Alsacienne de Construction de Material Textile
Original Assignee
Alsacienne de Construction de Material Textile
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 Alsacienne de Construction de Material Textile filed Critical Alsacienne de Construction de Material Textile
Publication of EP0119122A1 publication Critical patent/EP0119122A1/de
Application granted granted Critical
Publication of EP0119122B1 publication Critical patent/EP0119122B1/de
Expired legal-status Critical Current

Links

Images

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 weaving machines and, in particular, a device for presenting a weft in front of a weft pass needle, a device which is located between a weft pass eyelet and the edge of the fabric.
  • the insertion of the weft into the crowd of certain weaving machines is carried out using two weft pass needles including an input needle and an output needle animated back and forth. reverse.
  • the input needle must grip the stored weft thread coming from a reserve located outside the machine. To pick up the weft by the weft pass, it is necessary to present it at a well-determined location corresponding to the pinch point of the weft pass.
  • weft in front of a weft pass needle.
  • the weft is stretched between two gripping points, on the one hand closest to the width and on the other hand in a tensioner, the weft coming from a reel located outside the tensioner and the machine .
  • the first installation of the weft in the clamp is done manually before starting the machine.
  • a clamp and wire cutter member oscillating on a horizontal axis carrying a clamp and a knife perpendicularly on this axis, is combined so as to pinch the weft firstly, to cut it once pinched.
  • This organ is controlled at each cycle by the leaf.
  • the frame is thus ready to be inserted.
  • the advance movement transmitted to the weft pass needle allows the latter, by means of its clamp, to take the weft on the way to insert it into the crowd and to transfer it to the opposite needle, the weft-passing needle returning to the starting point cleared of the weft.
  • the pliers and thread cutters open like scissors. This organ is controlled by the wing. Meanwhile, the weft has slipped into a beak of the pliers and wire cutters, the assembly is closed, the weft is folded down, pinched and cut. The cycle can start again.
  • the clip and wire cutter member is mounted on the leaf and follows its movement; a fixed ramp fixed to the machine frame controls the opening and closing of the pliers and the wire cutter. This maneuver is carried out near the neutral point before, after the exit and before the entry of the weft-passing needle into the width.
  • a device for presenting a weft in front of a weaving loom needle which comprises a folding mechanism 24 and a presentation mechanism 20 in front of the needle 10 of the portion of the weft included between a thread guide and the edge of the fabric, and which also comprises a mechanism 130 for cutting the end of the weft located near the edge of the fabric, each of said mechanisms being carried by a fixed part of the frame of the loom to be woven and being actuated individually by a cam 34, 36 rotating in synchronism with the main shaft of the loom.
  • the present invention relates to a presentation device of this known type, the definition of which is given in the preamble to claim 1 attached.
  • the present invention aims to remedy these drawbacks.
  • the presentation device is characterized: in that it comprises a fixed gripping mechanism of the weft, carried by the frame of the loom, facilitating the gripping of the weft by the needle; and in that the folding mechanism comprises a folding finger which is slidably mounted vertically in a movable guide in rotation carried by the frame of the loom and which is provided with a folding spout and comprises a linkage link interposed between said finger and the cam surface of the cam.
  • the pinching force of the fixed pinch mechanism helps the weft to penetrate without fail between the twig and the body of the weft feeder, after the weft is presented facing the needle.
  • the spout carried by the folding mechanism describes, at the folding, a curvilinear movement both down and towards the front of the loom, which provides a safe positioning of the weft thread, even at high speeds of career.
  • the presentation device will be described according to the order of entry according to the different organs allowing the setting up of the frame.
  • the weft T is kept tensioned between two pinching points by the fabric a) on the one hand and by a tensioner b) on the other hand, the weft coming from the reel O) which is located outside b).
  • a tensioner b) Next to the tensioner b) and between the width a), a fixed eyelet d) in the case of monoframe or an eyelet d) mobile in the case of a weft mixer positions the weft always in the same place, as it is classic.
  • the device according to the invention is located on the edge of the loom, between the fabric a) and the eyelet, fixed or mobile, d.
  • a folding finger 1 On the passage of the frame T is a folding finger 1 which is controlled by means of a concave cam 2 and of a lever 3 which is mounted oscillating by its end 3a on a pin 4 ( Figures 1 and 2 ).
  • the lever 3 is provided with a roller 5 which is applied to the cam 2 under the action of a tension spring 6 attached to the lever 3 on one side and to the frame 7 of the loom on the other.
  • the end 3b of the lever 3 carries a hinge 8 on which is mounted the lower part of the finger 1 for folding the weft.
  • the finger 1 itself carries a slide 9 which engages on a rectangular guide 10, movable in rotation, which is held by an axis 11 secured to the frame.
  • the folding finger 1 carries at the upper part a spout 12 located on the path of the frame. During the downward movement of finger 1, the spout 12 describes a slight movement towards the front of the machine (to the left in FIG. 2).
  • the folding finger 1 is in action while the weft-passing needle is at rest outside the width. During insertion, the finger 1 is at rest, its beak 12 is positioned above the weft pass needle 13, in the position which is shown in FIG. 2.
  • the cam 2 is driven in rotation by a shaft 43 which rotates in synchronism with the main shaft (not shown) of the loom.
  • All the folding assembly R which has just been described is therefore carried by the frame of the machine, independently of the leaf, and it is actuated positively by the cam 2 and not by the movements of the leaf.
  • presentation hook 14 ( Figures 1 and 3) comes into action. This hook is disposed below the level of the path of the weft-passing needle 13 and the weft which has been lowered by the folding-down finger 1 is then in front of the hook 14, at the level of the latter.
  • the curved end 14a of the hook 14 drives the lowered weft by turning around an axis 16. During rotation, the weft is slid into a fixed clamp 27 composed of a lower blade, in an arc, 28 and d 'an upper blade 29.
  • the weft lowering by the finger 1 Since the weft lowering by the finger 1, it rests on the lower pinching blade 28 and is held in this position during its positioning in the clamp 27 by a trajectory of the hook 14a in an arc below the blade 28, combined with a movement from top to down obtained by the inclination of the control axis 16.
  • the hook 14, 14a At the end of the stroke, the hook 14, 14a is substantially perpendicular to the path of the pass needle -frame 13, as shown in broken lines in FIG. 1.
  • the hook 14 is also controlled by a convex cam 17.
  • a lever 18 mounted on an axis 19 by its end 18a carries at its other end 18b an axis 20 provided with a roller 21 which rests on the cam 17.
  • Between the ends 18a, 18b of the lever 18 is hooked a spring 22.
  • L the other end of the spring 22 is fixed to the frame 7.
  • a connecting rod 23 carrying at each end a ball joint 23a and 23b is fixed at one end by the ball 23a on the lever 18 between 18a and 18b.
  • the second end 23b is connected to a crank 24, itself fitted on the control shaft 16: an inclined bearing 25, which is integral with the frame 7, maintains the control shaft 16 in position.
  • Said axis 16 is provided at its upper part with a nut 26 which is adjustable in rotation and longitudinally relative to the control axis 16. This nut 26 carries the hook 14 which is also adjustable in rotation.
  • the precise function of the hook 14 consists in taking the weft stretched on its passage and in guiding it in the clamp 27 composed of the two gripping blades, lower 28 and upper 29, the two blades having the shape of an arc of a circle to allow the hook 14 to bypass them and easily engage the frame.
  • the weft T being held in the facade F of the fabric, the movement of the hook 14 guides it at the same time during its trajectory in a notch 40 belonging to the fixed knife 39 which will be described in the following.
  • the weft needle begins its movement and takes the weft in passing, the clamp 27 by the gripping force helps the weft to penetrate between the twig and the body of the weft feeder, after placing the weft in the weft feeder needle: the weft is immediately cut by the knife, as will be seen below, and inserted into the shed by the needle 13.
  • the cam 17, which controls the back-and-forth movement of the presentation hook 14, is fixed on a shaft 43 'which rotates in synchronism with the main shaft of the loom.
  • This assembly includes a movable knife 37 and a fixed counter blade 39 ( Figures 1 and 4).
  • the movable knife 37 is also controlled by a cam 30 like the two previous assemblies.
  • a lever 31 supports at one end a roller 32. Said lever is mounted rotating on an axis 33 carried by the frame 7. Between the ends 31 a, 31 b of the lever 31 is fixed an axis 34 carrying an articulation 35 with two branches. On a branch 35a of said articulation is fixed a spring 36; the other end of the spring is hooked to the frame 7.
  • the second branch 35b maintains the movable knife 37 by means of its rod 38.
  • the fixed counter blade 39, provided with the notch 40 is fixed to the frame 7.
  • the movable knife 37 is applied continuously against the fixed blade 39 by its oscillation joint 34 and by the action of the spring 36; the latter, by means of the articulation 35 of the axis 34 and of the lever 31 keeps the roller 32 on the path of the cam 30.
  • the inserted weft is compacted by the comb, the end of the weft protruding from the edge of the fabric engaging and being retained in a fixed hook 42 (FIGS. 1 and. 4), secured to the machine frame, so that it is always kept in the same place after tamping.
  • All the members of the third assembly of the device are also carried by the frame 7, the movements of the movable knife 37 being positively controlled by the cam 30 which is wedged on a shaft 43 "rotating in synchronism with the main tree of the trade.
  • cam 2- cam 17-cam 30 For clarity of the drawings and for simplification of the description, it has been assumed that the three cams 2, 17, 30 were independent, but it is quite obvious, since all these cams have their axes of rotation parallel, that, in practice , they are mounted side by side on a single common shaft, which rotates in synchronism with the main shaft of the loom, and which they successively come into action, by their hollows or by their hump, in the order: cam 2- cam 17-cam 30.
  • the first two functions can be carried out by a single assembly, namely that represented in FIG. 3.
  • the curved part 14a of the hook 14 is extended by an ascending oblique part (substantially parallel to the upper layer S of the warp threads in FIG. 3) extending sufficiently upwards to hang the weft T (FIG. 1) which has not been, in this case, previously folded down.
  • the weft T slides along the oblique extension of the hook, which lowers it until it reaches the curved part 14a of the hook 14 which drives it in the clamp 27.
  • this variant does not make it possible to reach the highest speeds which are reached only when the weft folding assembly shown in FIG. 2 is present. Indeed, this mechanism, thanks to its individual cam control, can fold the weft much faster than the hook 14, in the variant which has just been described.

Landscapes

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

Claims (4)

1. Vorrichtung zum Vorlegen eines Schußfadens vor die Eintragsnadel einer Webmaschine mit einem Mechanismus zum Niederdrücken und Vorlegen des zwischen einer Führungsöse (d) und dem Rand (a) der Webware liegenden Abschnitts des Schußfadens (T) vor die Eintragsnadel (13), sowie mit einem Mechanismus (C) zum Abschneiden des in der Nähe des Randes (a) der Webware liegenden Endes des Schußfadens (T), wobei jeder dieser Mechanismen von einem festen Teil (7) des Gestells der Webmaschine getragen und individuell von einem Nocken (2-17-13) angetrieben ist, der synchron mit der Hauptwelle der Webmaschine rotiert, dadurch gekennzeichnet, daß ein von dem Gestell (7) der Webmaschine getragener und fest angeordneter Mechanismus zum Einklemmen des Schußfadens (T) vorgesehen ist, der das Ergreifen des Schußfadens durch die Eintragsnadel erleichtert, und daß der Mechanismus (R) zum Niederdrücken des Schußfadens einen Niederdrückfinger (1) umfaßt, der annähernd vertikal gleitend in einer von dem Gestell (7) der Webmaschine getragenen drehbaren Fühc rung (10) montiert ist und ein zwischen dem genannten Niederdrückfinger (1) und der Steuerfläche des betreffenden Nockens (2) liegendes Übertragungsgestänge (3, 4, 5, 8) umfaßt.
2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß der Vorlegemechanismus einen mit einer Vorlegenase (14a) ausgestatteten Vorlegehaken (14) umfaßt, der von einer Achse (16) getragen ist, die in einem mit dem Gestell (7) der Webmaschine fest verbunden Lager (25) schwenkbar montiert ist, daß der von dem Gestell (7) der Webmaschine getragene, fest angeordnete Mechanismus (27) zum Einklemmen des Schußfadens aus einer unteren und einer oberen Klemmlamelle (28 bzw. 29) zusammengesetzt ist, die kreisbogenförmig ausgebildet sind und oberhalb der kreisbogenförmigen Bewegungsbahn des Vorlegehakens (14) verlaufen und daß zwischen der genannten Achse (16) und der Steuerfläche des betreffenden Nockens (17) ein Übertragungsgestänge (18, 19, 21, 23, 24) angeordnet ist.
3. Vorrichtung nach Anspruch 2, dadurch gekennzeichnet, daß die genannte Achse (16) gegenüber der Vertikalen geneigt ist.
4. Webmaschine, dadurch gekennzeichnet, daß sie mit einer Vorrichtung zum Vorlegen des Schußfadens (T) vor die Eintragsnadei (13) nach einem der Ansprüche 1 bis 3 ausgestattet ist und daß diese Vorrichtung von dem Gestell (7) der Webmaschine getragen ist und seitlich der Webmaschine zwischen einer Öse (d) zur Führung des Schußfadens und dem Rand (a) der Webware liegt.
EP19840400333 1983-03-09 1984-02-17 Vorrichtung zum Übertragen des Schussfadens an der Eintragsnadel einer Webmaschine und mit einer solchen Vorrichtung versehene Webmaschine Expired EP0119122B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8303823 1983-03-09
FR8303823A FR2542333B1 (fr) 1983-03-09 1983-03-09 Dispositif de presentation d'une trame devant une aiguille passe-trame de metier a tisser et metier a tisser equipe d'un tel dispositif

Publications (2)

Publication Number Publication Date
EP0119122A1 EP0119122A1 (de) 1984-09-19
EP0119122B1 true EP0119122B1 (de) 1986-11-12

Family

ID=9286646

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19840400333 Expired EP0119122B1 (de) 1983-03-09 1984-02-17 Vorrichtung zum Übertragen des Schussfadens an der Eintragsnadel einer Webmaschine und mit einer solchen Vorrichtung versehene Webmaschine

Country Status (3)

Country Link
EP (1) EP0119122B1 (de)
DE (1) DE3461306D1 (de)
FR (1) FR2542333B1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3812960A1 (de) * 1987-10-06 1989-04-20 Textilma Ag Greiferwebmaschine

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1394396A (fr) * 1964-04-09 1965-04-02 Jean Guesken Maschinenfabrik U Dispositif d'alimentation de fil de trame sur métiers à griffes et métier pourvu d'un dispositif conforme ou similaire au précédent
DE1785225A1 (de) * 1968-08-28 1972-01-05 Tonnar Gmbh Felix Webstuhl
FR2286902A1 (fr) * 1974-10-04 1976-04-30 Alsacienne Constr Meca Perfectionnement aux metiers a tisser sans navette, en vue d'eviter les defauts de barres en trame
FR2326509A1 (fr) * 1975-10-03 1977-04-29 Alsacienne Constr Meca Perfectionnement aux moyens de controle et de coupe des fils de trame dans les metiers a tisser a insereurs de trames

Also Published As

Publication number Publication date
FR2542333A1 (fr) 1984-09-14
EP0119122A1 (de) 1984-09-19
FR2542333B1 (fr) 1985-08-02
DE3461306D1 (en) 1987-01-02

Similar Documents

Publication Publication Date Title
FR2490253A1 (fr) Pince de propulsion de trame
CH643613A5 (fr) Dispositif a buse mobile pour insertion pneumatique de la trame sur une machine a tisser sans navette.
FR2464319A1 (fr) Tete de griffe pour metiers a tisser avec prelevement du fil de trame a partir de bobines fixes
EP0371919A1 (de) Nähmaschine
EP0119122B1 (de) Vorrichtung zum Übertragen des Schussfadens an der Eintragsnadel einer Webmaschine und mit einer solchen Vorrichtung versehene Webmaschine
FR2535351A1 (fr) Dispositif equipant un metier a tisser sans navette, pour former une lisiere sur un tissu
FR2463832A1 (fr) Mecanisme destine a commander les pinces des organes d'insertion du fil de trame d'une machine a tisser sans navette
FR2610646A1 (fr) Dispositif de sectionnement du fil de trame pour metier a tisser
FR2478683A1 (fr) Metier a tisser du type a pinces
FR2505885A1 (fr) Dispositif pour introduire les extremites de fil de trame au bord du tissu dans un metier a tisser sans navette
EP0007543B1 (de) Webstuhl mit Schussfadenschneidvorrichtung und darin verwendete Schussfadenschneidvorrichtung
FR2466550A1 (fr) Dispositif de convoyage d'un fil de trame dans une machine a tisser sans navette
FR1242372A (fr) Perfectionnements aux dispositifs pour la réalisation de lisières, notamment pour métiers à tisser sans navette
FR2580000A1 (de)
FR1310490A (fr) Perfectionnements aux métiers à tisser à réserve de trame fixe
BE541343A (de)
CH348376A (fr) Métier à tisser
CH346838A (fr) Métier à tisser
FR2690466A1 (fr) Dispositif pour la présentation du fil de trame aux pinces des machines à tisser à pinces.
CH653715A5 (fr) Mecanisme de transformation de metiers a tisser a navette en metiers a tisser sans navette.
BE1012999A3 (fr) Dispositifs de retenue de trame pour metiers a tisser du type a jets de fluide.
BE570070A (de)
BE568139A (de)
BE823907A (fr) Procede et dispositif pour replier les extremites des duites dans la foule d'un trou fabrique par un metier sans navette
BE378859A (de)

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): BE CH DE IT LI

17P Request for examination filed

Effective date: 19850306

ITF It: translation for a ep patent filed
GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): BE CH DE IT LI

REF Corresponds to:

Ref document number: 3461306

Country of ref document: DE

Date of ref document: 19870102

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
ITTA It: last paid annual fee
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 19930420

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 19930527

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19930618

Year of fee payment: 10

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Effective date: 19940228

Ref country code: CH

Effective date: 19940228

Ref country code: BE

Effective date: 19940228

BERE Be: lapsed

Owner name: SOC. ALSACIENNE DE CONSTRUCTION DE MATERIEL TEXTI

Effective date: 19940228

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19941101