EP0007543A1 - Loom with weft cutting device and such a device for use therein - Google Patents

Loom with weft cutting device and such a device for use therein Download PDF

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Publication number
EP0007543A1
EP0007543A1 EP19790102460 EP79102460A EP0007543A1 EP 0007543 A1 EP0007543 A1 EP 0007543A1 EP 19790102460 EP19790102460 EP 19790102460 EP 79102460 A EP79102460 A EP 79102460A EP 0007543 A1 EP0007543 A1 EP 0007543A1
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EP
European Patent Office
Prior art keywords
weft
support
chisel
loom
transmission
Prior art date
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Granted
Application number
EP19790102460
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German (de)
French (fr)
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EP0007543B1 (en
Inventor
André Dewispelaere
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Cessione ferromatrix Nv
Original Assignee
"pvba Van De Wiele International"
WIELE INT PVBA VAN DE
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Priority claimed from BE189601A external-priority patent/BE869386A/en
Application filed by "pvba Van De Wiele International", WIELE INT PVBA VAN DE filed Critical "pvba Van De Wiele International"
Publication of EP0007543A1 publication Critical patent/EP0007543A1/en
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Publication of EP0007543B1 publication Critical patent/EP0007543B1/en
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    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D49/00—Details or constructional features not specially adapted for looms of a particular type
    • D03D49/70—Devices for cutting weft threads

Definitions

  • the invention relates to a weaving loom with weft cutter device, a loom which includes a frame, a drive shaft supported relative to this frame, a leaf mounted so as to be able to oscillate back and forth relative to to the frame, means for making the leaf oscillate back and forth, and a weft introduction mechanism intended to introduce a weft into at least one crowd or interval, while the weft cutter device cooperates with the device weft introduction and comprises a weft scissor proper with two knives that can be moved relative to each other and means for opening and closing the weft scissor.
  • the weft cutter device is mounted on the fixed frame of the loom, in general in the immediate vicinity of the place where the weft thread is supplied to the weft introduction mechanism, which is generally made up of two cooperating forceps, a supplier and a receiver, per crowd. Since the weft thread should not be cut, however, until after the pick has been pushed back by the leaf against the already woven part, the length of weft thread between the edge of the fabric and the weft cutter is relatively large. at the time of cutting. In these known weaving looms, there are therefore relatively high weft losses.
  • the actual weft scissor is mounted on the actual weft introduction mechanism, for example on a clamp or in the immediate vicinity of a clamp. Since this weft knife is found during cutting approximately in the same place as in the aforementioned known weaving looms, we also find with these weaving looms a relatively large loss of weft yarn. In addition, the opening and closing at the appropriate time of the weft scissor which must accompany the movement of the weft feed mechanism generally presents problems.
  • the object of the invention is to eliminate these drawbacks and to offer a weaving loom with a weft cutter device in which the loss of weft yarn on each pick is relatively low while the weft cutter device can however be maintained relatively simple construction.
  • the weft chisel is mounted on the leaf and therefore accompanies the oscillation of the latter, while the means for opening and closing the weft chisel include a cam disc which is rotatably mounted on the loom. , a transmission between the cam disc and the drive shaft to drive this disc, a cam follower which circulates on the cam disc, a support on which is mounted the cam follower, support which is pivotally mounted on the wing, and a rod transmission between the support and the weft chisel in order to transform a pivoting movement of the support into a tilting of at least one of the knives of the weft chisel.
  • the transmission by rod between the support of the cam follower and the chisel comprises at one end a connecting rod which is fixed, at a certain distance from the axis of articulation of the support, articulated around an axis parallel to this axis of articulation, on the aforementioned support.
  • the articulated or pivoting attachment of the rod to one end of the rod transmission on the support of the cam follower is formed by a shaft with respect to which at least one of the elements formed by the aforementioned rod and the support can rotate, shaft which can be moved in the longitudinal direction relative to at least one of the last aforementioned elements.
  • the rod transmission between the follower support and the weft chisel has at one end a rod which is positively connected to one of the knives of the weft chisel and which is therefore articulated about the axis of rotation about which the knives can pivot relative to each other, relative to the other knife.
  • the weft cutter device comprises a clamping part and means for applying the latter elastically against one of the knives.
  • the weft cutter also acts as the weft presentation device of the gripper, so that no auxiliary mechanism is required for this presentation.
  • the invention also relates to a weft cutter device intended for use in a weaving loom according to one of the preceding embodiments.
  • the loom illustrated in the drawings is of a known type with pliers and bars with rigid pliers. For the sake of simplification, the loom will be described below and illustrated in the accompanying drawings only to the extent necessary to illustrate the invention.
  • the loom includes a drive shaft 1 which is supported in the frame 2 and is driven by a motor not shown in the drawings.
  • auxiliary shaft 3 which can be actuated by an alternating pivoting movement using a known transmission not illustrated in the drawings from the drive shaft 1, is mounted the rose lever 4, which carries at the upper part the leaf 5 and the ros 6. Opposite the latter are mounted two clamp bars 7, which each carry a clamp 8. These clamp bars 7 and clamps 8 are part of the weft introduction mechanism which introduces a weft thread into the crowd or interval of the warp.
  • the first clamp 8 grabs on one side of the loom, the weft thread which is unwound from a reel and transmits it, in the middle of the loom, to the other clamp 8 which pulls the thread even further through the crowd .
  • the ros lever 4, the leaf 5 and the ros 6 can be driven in a back-and-forth pivoting movement relative to a fabric table 9 mounted on the frame 2 and which supports the fabric already formed.
  • the weft cutter mechanism On the side of the loom from which the weft thread is brought into the crowd and where therefore, with each pick, the weft thread is driven by the first clamp, there is a weft cutter mechanism which, when the thread of weft has been completely pulled through the crowd, cut this weft thread so that the clamp, during the next pick, can again bring a free end of the weft thread through the next crowd.
  • the weft cutter mechanism consists of a weft chisel, generally designated by the reference 10, and by a transmission between this chisel and the drive shaft 1, a transmission which controls the opening and closing of the chisel to frame.
  • the weft scissor 10 comprises a fixed knife 11 which is fixed by two bolts 12 at a certain distance from a fixing piece 13. The latter is itself fixed by bolts 14 and nuts 15 to the leaf 5, immediately next to the ros 6. Between the fixed knife 11 and the fixing piece 13 is the movable knife 16, which is rotatably mounted relative to the fixing piece 13. On the side of the movable knife 16 opposite the stationary knife 11, pressure is exerted by a clamping piece 18 which partially penetrates into an opening 19 of the fixing piece 13. A spring 20 pushes this clamping piece out of the opening 19, with his head against the knife 16.
  • the articulated fixing of the movable knife 16 on the fixing piece 13 is obtained by means of a lever 21 of the aforementioned transmission.
  • the knife 16 is positively secured by bolts 22 of one end of the lever 21, which end is articulated on a shaft 24 screwed firmly by one end into the fixed knife 11.
  • This shaft extends in the direction of the frame, so that the movable knife 16 can be moved in a vertical plane extending parallel to the warp threads.
  • a pressure spring 23 is arranged around the shaft 24, between a plate 17 fixed to the end of this shaft 24 and the movable knife 16, and it pushes the latter against the fixed knife 11. It is obvious that the bolts 12 must not hinder the movement of the knife 16 relative to the stationary knife 11, nor the corresponding tilting of the lever 21.
  • the end of the lever 21 remote from the weft chisel 10 is provided with a groove 25 extending in the longitudinal direction.
  • a shaft 26 which extends parallel to the shaft 24 and which connects the lever 21 to a second connecting rod 27.
  • the latter consists of three parts which can be screwed into one another, which allows you to adjust the length of the connecting rod.
  • the lever 21 and the connecting rod 27 form a rod transmission between the movable knife 16 and the support 28 of a cam follower 29.
  • the latter is a wheel which circulates on a cam disc 30.
  • the latter is fixed against a wheel toothed 31.
  • the latter and the cam disc 30 are mounted together in free rotation around the auxiliary shaft 3.
  • the toothed wheel 31 meshes with a toothed wheel 32 of the same dimension which is integral with the drive shaft 1.
  • the support 28 has approximately the shape of an inverted T.
  • One end of the tail is fixed in an articulated manner by means of a small pin 33 to one end of the connecting rod 27.
  • the support 28 is fixed so articulated by a small axis 34 to a support 35 which is fixed to the auxiliary shaft 3 and is therefore also fixed relative to the rose lever 4.
  • the articulation axis 34 therefore oscillates back and forth together with the beating 5 and the ros 4 around the shaft 3.
  • the cam follower 29 On one end of the head of the support 28 approximately in the shape of a T, the cam follower 29 has been fixed in rotation by means of a small pin 36.
  • the other end of the head is fixed by means of a small axis 37 to a piston 38 which penetrates by one end into a cylindrical opening 39 of the support 35.
  • a pressure spring 40 which pushes the piston 38 outwards and therefore ensures that the cam follower 29 remains constantly in contact with the dis as cam 30.
  • the assembly formed by the support 35, the support 28, the transmission constituted by the lever 21 and the connecting rod 27 and the weft knife 10 accompanies the oscillation of the ros lever 4, of the leaf 5 and of the ros 6.
  • the support 28 will have to perform an alternative oscillation around its minor axis 34 relative to all of the above. This oscillation is transmitted via the lever 21 and the connecting rod 27 to the weft knife.
  • the movable knife 16 In the position of the support 28 illustrated in the figures, the movable knife 16 is in its lowest position and the weft knife 10 is therefore closed. In this position, the ros 6 is in its rearmost position, that is to say the furthest from the tissue.
  • the movable knife 16 is caused to pivot via the connecting rod 27 and the lever 21 and therefore the chisel frame 10 is open.
  • a guide plate 41 which is mounted in front of the fabric table 9 on the frame 2, pushes the weft thread into the open chisel.
  • the cam disc 30 is constructed such that immediately after the movable knife 16 is pivotally returned to its initial position. Therefore, the weft thread is first pinched between the movable knife 16 and the clamping piece 18, then it is cut. When the ros 6 has reached its most forward position, the weft scissor 10 is completely closed. The part of the weft thread which has just been introduced into the shed is then completely free from the portion of this thread coming from the reserve or supply coil. The most forward end of this last part is still in the chisel, between the movable knife 16 and the clamping piece 18.
  • the part of the weft thread which extends between the chisel 10 and the supply reel is thus offered to a clamp 8, so that the latter can again grasp the weft thread in the immediate vicinity of the cut front end of the last aforementioned part weft thread, in order to bring it during the next phase in the crowd.
  • the weft scissor 10 Due to the fact that the weft scissor 10 is mounted in the immediate vicinity of the ros 6, the cutting of a weft thread having just been introduced into the crowd takes place in the immediate vicinity of the selvedge and the part of this thread weft still coming from the reserve reel is also gripped by the clamp in the immediate vicinity of the cut end.
  • the weft cutter mechanism therefore also forms a mechanism for the presentation of the weft yarn to a clamp, so that this presentation does not require any particular or additional mechanism. The weft loss is therefore extremely limited.
  • the weft chisel 10 can actually be moved in this direction to allow adaptation of the cutting mechanism to different widths of fabric.
  • This is achieved in a simple way thanks to the fact that the small axis of arti culation 33, by means of which the connecting rod 27 is hingedly connected to the support 28, can slide in its longitudinal direction relative to the support 28.
  • the connecting rod 27 is located on one side around an end of small diameter of the small axis 33. On this end is screwed a nut 42 intended to hold the connecting rod 27 in position.
  • the other part of the minor axis 33 which therefore has a larger diameter, has a relatively large length and slides to penetrate through an opening 43 in the support 28.
  • the cutting device described above can be adapted to very different fabric widths and when changing the fabric width, adapting the weft cutter mechanism is very simple. If when changing the width of the fabric, we replace the ros 6, we simply have to move the fixing part 13 of the weft chisel 10 and mount it in the correct place on the leaf 5. Therefore minor axis 33 then slides relative to the support 28, so that the transmission by rod between the weft chisel 10 and the support 28 remains ensured.

Abstract

1. Loom, with weft-cutting device (10), said loom comprising a frame (2), a driving shaft (1) supported inside said frame (2), a batten (5) mounted on said frame (2) with a to-and-fro swinging capacity, means (21, 27, 30, 31) to swing the batten (5) alternately and a weftfeeding mechanism (7, 8) to feed a weft into at least one shed or interval, while the weft-cutting device (10) cooperates with the weft-feeding mechanism (7, 8) and comprises a weft shear proper with two knives (11, 16) movable relative to one another, and means to open and close said weft shear, loom in which the weft shear (10) is mounted on the batten (5) and moves together with the swinging thereof, said means to open and close said weft shear comprising a cam disk (30) rotatably mounted on the loom, a transmission (31, 32) between the cam disk (30) and the driving shaft (19) to drive said cam disk, a cam follower (29) which rides on the cam disk, a support (28) on which said cam follower is mounted, which support is hingedly mounted on the batten (5) to convert a swinging motion of the support (28) into a folding-back of at least one knife (16) from the weft shear, said loom being characterized in that the cam disk (30) is rotatably mounted about an axis common with the rotation axis of the batten (5), and the means for swing alternately the batten (5) also cooperate with the weft shear (10) to open same, a rod transmission (21, 27) being provided between the support (28) and the movable knife (16) from the shear (10), said knife being positively controlled by the rod (21).

Description

L'invention est relative à un métier à tisser avec dispositif coupe-trame, métier qui comporte un bâti, un arbre d'entraînement supporté par rapport à ce bâti, un battant monté de façon à pouvoir osciller en va-et-vient par rapport au bâti, des moyens pour faire osciller en va-et-vient le battant, et un mécanisme d'introduction de trame destiné à introduire une trame dans au moins une foule ou intervalle, tandis que le dispositif coupe-trame coopère avec le dispositif d'introduction de trame et comporte un ciseau de trame proprement dit avec deux couteaux pouvant être déplacés l'un par rapport à l'autre et des moyens pour ouvrir et fermer le ciseau à trame.The invention relates to a weaving loom with weft cutter device, a loom which includes a frame, a drive shaft supported relative to this frame, a leaf mounted so as to be able to oscillate back and forth relative to to the frame, means for making the leaf oscillate back and forth, and a weft introduction mechanism intended to introduce a weft into at least one crowd or interval, while the weft cutter device cooperates with the device weft introduction and comprises a weft scissor proper with two knives that can be moved relative to each other and means for opening and closing the weft scissor.

Dans des métiers à tisser connus de ce genre, le dispositif coupe-trame est monté sur le bâti fixe du métier à tisser, en général au voisinage immédiat de l'endroit où le fil de trame est fourni au mécanisme d'introduction de trame, qui est en général constitué par deux pinces coopérantes, une fournisseuse et une réceptrice, par foule. Etant donné que le fil de trame ne doit cependant être découpé qu'après que la duite a été repoussée par le battant contre la partie déjà tissée, la longueur de fil de trame entre la lisière du tissu et le dispositif coupe-trame est relativement grande au moment du découpage. Dans ces métiers à tisser connus, on a donc de relativement fortes pertes en fil de trame. Dans d'autres métiers à tisser connus, le ciseau à trame proprement dit est monté sur le mécanisme d'introduction de trame proprement dit, par exemple sur une pince ou au voisinage immédiat d'une pince. Etant donné que ce couteau à trame se trouve lors du découpage approximativement au même endroit que dans les métiers à tisser connus précités, on rencontre également avec ces derniers métiers à tisser une relativement grande perte en fil de trame. En outre, l'ouverture et la fermeture au moment approprié du ciseau à trame qui doit accompagner le déplacement du mécanisme d'introduire de trame, offre en générale des problèmes.In known looms of this kind, the weft cutter device is mounted on the fixed frame of the loom, in general in the immediate vicinity of the place where the weft thread is supplied to the weft introduction mechanism, which is generally made up of two cooperating forceps, a supplier and a receiver, per crowd. Since the weft thread should not be cut, however, until after the pick has been pushed back by the leaf against the already woven part, the length of weft thread between the edge of the fabric and the weft cutter is relatively large. at the time of cutting. In these known weaving looms, there are therefore relatively high weft losses. In other known weaving looms, the actual weft scissor is mounted on the actual weft introduction mechanism, for example on a clamp or in the immediate vicinity of a clamp. Since this weft knife is found during cutting approximately in the same place as in the aforementioned known weaving looms, we also find with these weaving looms a relatively large loss of weft yarn. In addition, the opening and closing at the appropriate time of the weft scissor which must accompany the movement of the weft feed mechanism generally presents problems.

L'invention a pour but d'éliminer ces inconvénients et d'offrir un métier à tisser avec dispositif coupe-trame dans lequel la perte en fil de trame à chaque duite est relativement faible tandis que le dispositif coupe-trame peut cependant être maintenu de construction relativement simple.The object of the invention is to eliminate these drawbacks and to offer a weaving loom with a weft cutter device in which the loss of weft yarn on each pick is relatively low while the weft cutter device can however be maintained relatively simple construction.

A cette fin, le ciseau à trame est monté sur le battant et accompagne donc l'oscillation de ce dernier, tandis que les moyens pour ouvrir et fermer le ciseau à trame comprennent un disque de came qui est monté à rotation sur le métier à tisser, une transmission entre le disque de came et l'arbre d'entraînement pour entraîner ce disque, un suiveur de came qui circule sur le disque de came, un support sur lequel est monté le suiveur de came, support qui est monté à pivotement sur le battant, et une transmission par tringle entre le support et le ciseau à trame afin de transformer un mouvement pivotant du support en un basculement d'au moins un des couteaux du ciseau à trame.To this end, the weft chisel is mounted on the leaf and therefore accompanies the oscillation of the latter, while the means for opening and closing the weft chisel include a cam disc which is rotatably mounted on the loom. , a transmission between the cam disc and the drive shaft to drive this disc, a cam follower which circulates on the cam disc, a support on which is mounted the cam follower, support which is pivotally mounted on the wing, and a rod transmission between the support and the weft chisel in order to transform a pivoting movement of the support into a tilting of at least one of the knives of the weft chisel.

Dans une forme de réalisation particulière de l'invention, la transmission par tringle entre le support du suiveur de came et le ciseau, comporte à une extrémité une bielle qui est fixée, à une certaine distance de l'axe d'articulation du support, de manière articulée autour d'un axe parallèle à cet axe d'articulation, sur le support précité.In a particular embodiment of the invention, the transmission by rod between the support of the cam follower and the chisel, comprises at one end a connecting rod which is fixed, at a certain distance from the axis of articulation of the support, articulated around an axis parallel to this axis of articulation, on the aforementioned support.

De préférence, la fixation articulée ou pivotante de la tringle à une extrémité de la transmission par tringle sur le support du suiveur de came est formée par un arbre par rapport auquel au moins l'un des éléments formé par la tringle précitée et le support peut tourner, arbre qui peut être déplacé suivant la direction longitudinale par rapport à au moins l'un des derniers éléments précités.Preferably, the articulated or pivoting attachment of the rod to one end of the rod transmission on the support of the cam follower is formed by a shaft with respect to which at least one of the elements formed by the aforementioned rod and the support can rotate, shaft which can be moved in the longitudinal direction relative to at least one of the last aforementioned elements.

Dans cette forme de réalisation, il est possible d'une façon simple avec les mêmes moyens destinés à ouvrir et fermer le ciseau à trame, de déplacer ce dernier suivant le sens de la largeur du métier à tisser, afin d'adapter par exemple ce ciseau à trame à la largeur du tissu.In this embodiment, it is possible in a simple way with the same means intended to open and close the weft scissor, to move the latter according to the direction of the width of the loom, in order to adapt for example this weft scissor the width of the fabric.

Dans une forme de réalisation avantageuse de l'invention, la transmission par tringle entre le support du suiveur et le ciseau à trame comporte à une extrémité une tringle qui est reliée positivement à l'un des couteaux du ciseau à trame et qui est donc articulée autour de l'axe de rotation autour duquel les couteaux peuvent pivoter l'un par rapport à l'autre, par rapport à l'autre couteau.In an advantageous embodiment of the invention, the rod transmission between the follower support and the weft chisel has at one end a rod which is positively connected to one of the knives of the weft chisel and which is therefore articulated about the axis of rotation about which the knives can pivot relative to each other, relative to the other knife.

Dans une forme de réalisation préférée de l'invention, le dispositif coupe-trame comporte une pièce de serrage et des moyens pour appliquer cette dernière élastiquement contre l'un des couteaux.In a preferred embodiment of the invention, the weft cutter device comprises a clamping part and means for applying the latter elastically against one of the knives.

Dans cette forme de réalisation, le dispositif coupe-trame agit également en tant que dispositif de présentation de trame de la pince, de telle sorte qu'aucun mécanisme auxiliaire n'est nécessaire pour cette présentation.In this embodiment, the weft cutter also acts as the weft presentation device of the gripper, so that no auxiliary mechanism is required for this presentation.

L'invention concerne également un dispositif coupe-trame destiné à être utilisé dans un métier à tisser suivant l'une des formes de réalisation précédentes.The invention also relates to a weft cutter device intended for use in a weaving loom according to one of the preceding embodiments.

D'autres détails et particularités de l'invention ressortiront de la description ci-après, donnée à titre d'exemple non limitatif et en se référant aux dessins annexés, dans lesquels :

  • La figure 1 est une vue en élévation latérale d'une partie du métier à tisser avec dispositif coupe-trame suivant l'invention.
  • La figure 2 est une vue en coupe suivant la ligne II-II de la figure 1.
  • La figure 3 est une vue en plan de dessus, à grande échelle, du ciseau à trame du dispositif coupe-trame du métier à tisser illustré à la figure 1.
Other details and particularities of the invention will emerge from the description below, given by way of nonlimiting example and with reference to the appended drawings, in which:
  • Figure 1 is a side elevational view of part of the loom with weft cutter device according to the invention.
  • Figure 2 is a sectional view along line II-II of Figure 1.
  • FIG. 3 is a top plan view, on a large scale, of the weft chisel of the weft cutter device of the weaving loom illustrated in FIG. 1.

Dans les diverses figures, des références identiques désignent des éléments analogues.In the various figures, identical references designate similar elements.

Le métier à tisser illustré aux dessins est d'un type connu avec des pinces et des barres à pinces rigides. Dans un but de simplification, le métier à tisser ne sera décrit ci-après et illustré dans les dessins annexés que dans la mesure nécessaire pour illustrer l'invention.The loom illustrated in the drawings is of a known type with pliers and bars with rigid pliers. For the sake of simplification, the loom will be described below and illustrated in the accompanying drawings only to the extent necessary to illustrate the invention.

Le métier à tisser comprend un arbre d'entraînement 1 qui est supporté dans le bâti 2 et est entraîné par un moteur non illustré aux dessins.The loom includes a drive shaft 1 which is supported in the frame 2 and is driven by a motor not shown in the drawings.

Sur un arbre auxiliaire 3, qui peut être animé d'un mouvement de pivotement alternatif à l'aide d'une transmission connue non illustrée aux dessins à partir de l'arbre d'entraînement 1, est monté le levier de ros 4, qui porte à la partie supérieure le battant 5 et le ros 6. En face de ce dernier sont montées deux barres à pinces 7, qui portent chacune une pince 8. Ces barres à pince 7 et pinces 8 font parties du mécanisme d'introduction de trame qui introduit un fil de trame dans la foule ou intervalle de la chaîne. La première pince 8 saisit sur un côté du métier, le fil de trame qui est déroulé d'une bobine et le transmet, au milieu du métier à tisser, à l'autre pince 8 qui tire le fil encore plus loin à travers la foule. Le levier à ros 4, le battant 5 et le ros 6 peuvent être animés d'un mouvement de pivotement en va-et-vient par rapport à une table à tissu 9 montée sur le bâti 2 et qui soutient le tissu déjà formé.On an auxiliary shaft 3, which can be actuated by an alternating pivoting movement using a known transmission not illustrated in the drawings from the drive shaft 1, is mounted the rose lever 4, which carries at the upper part the leaf 5 and the ros 6. Opposite the latter are mounted two clamp bars 7, which each carry a clamp 8. These clamp bars 7 and clamps 8 are part of the weft introduction mechanism which introduces a weft thread into the crowd or interval of the warp. The first clamp 8 grabs on one side of the loom, the weft thread which is unwound from a reel and transmits it, in the middle of the loom, to the other clamp 8 which pulls the thread even further through the crowd . The ros lever 4, the leaf 5 and the ros 6 can be driven in a back-and-forth pivoting movement relative to a fabric table 9 mounted on the frame 2 and which supports the fabric already formed.

Sur le côté du métier à tisser à partir duquel le fil de trame est amené dans la foule et où donc, à chaque duite, le fil de trame est entraîné par la première pince, se trouve un mécanisme coupe-trame qui, lorsque le fil de trame a été complètement tiré à travers la foule, découpe ce fil de trame afin que la pince, lors de la duite suivante, puisse à nouveau amener un bout libre du fil de trame à travers la foule suivante. Le mécanisme coupe-trame est constitué par un ciseau à trame, désigné dans son ensemble par la référence 10, et par une transmission entre ce ciseau et l'arbre d'entraînement 1, transmission qui commande l'ouverture et la fermeture du ciseau à trame.On the side of the loom from which the weft thread is brought into the crowd and where therefore, with each pick, the weft thread is driven by the first clamp, there is a weft cutter mechanism which, when the thread of weft has been completely pulled through the crowd, cut this weft thread so that the clamp, during the next pick, can again bring a free end of the weft thread through the next crowd. The weft cutter mechanism consists of a weft chisel, generally designated by the reference 10, and by a transmission between this chisel and the drive shaft 1, a transmission which controls the opening and closing of the chisel to frame.

Ainsi qu'il ressort en particulier de la figure 3, le ciseau à trame 10 comprend un couteau fixe 11 qui est fixé par deux boulons 12 à une certaine distance d'une pièce de fixation 13. Cette dernière est elle-même fixée par des boulons 14 et des écrous 15 au battant 5, immédiatement à côté du ros 6. Entre le couteau fixe 11 et la pièce de fixation 13 se trouve le couteau mobile 16, qui est monté à rotation par rapport à la pièce de fixation 13. Sur le côté du couteau mobile 16 opposé au couteau fixe 11, une pression est exercée par une pièce de serrage 18 qui pénètre partiellement dans une ouverture 19 de la pièce de fixation 13. Un ressort 20 repousse cette pièce de serrage hors de l'ouverture 19, avec sa tête contre le couteau 16.As can be seen in particular from FIG. 3, the weft scissor 10 comprises a fixed knife 11 which is fixed by two bolts 12 at a certain distance from a fixing piece 13. The latter is itself fixed by bolts 14 and nuts 15 to the leaf 5, immediately next to the ros 6. Between the fixed knife 11 and the fixing piece 13 is the movable knife 16, which is rotatably mounted relative to the fixing piece 13. On the side of the movable knife 16 opposite the stationary knife 11, pressure is exerted by a clamping piece 18 which partially penetrates into an opening 19 of the fixing piece 13. A spring 20 pushes this clamping piece out of the opening 19, with his head against the knife 16.

La fixation articulée du couteau mobile 16 sur la pièce de fixation 13 est obtenue par l'intermédiaire d'un levier 21 de la transmission précitée. Le couteau 16 est rendu solidaire positivement par des boulons 22 d'une extrémité du levier 21, extrémité qui est articulée sur un arbre 24 vissé fermement par une extrémité dans le couteau fixe 11. Cet arbre s'étend suivant la direction de la trame, de telle sorte que le couteau mobile 16 peut être déplacé dans un plan vertical s'étendant parallèlement aux fils de chaîne. Un ressort de pression 23 est disposé autour de l'arbre 24, entre une plaquette 17 fixée à l'extrémité de cet arbre 24 et le couteau mobile 16, et il repousse ce dernier contre le couteau fixe 11. Il est évident que les boulons 12 ne doivent gêner ni le mouvement du couteau 16 par rapport au couteau fixe 11, ni le basculement correspondant du levier 21.The articulated fixing of the movable knife 16 on the fixing piece 13 is obtained by means of a lever 21 of the aforementioned transmission. The knife 16 is positively secured by bolts 22 of one end of the lever 21, which end is articulated on a shaft 24 screwed firmly by one end into the fixed knife 11. This shaft extends in the direction of the frame, so that the movable knife 16 can be moved in a vertical plane extending parallel to the warp threads. A pressure spring 23 is arranged around the shaft 24, between a plate 17 fixed to the end of this shaft 24 and the movable knife 16, and it pushes the latter against the fixed knife 11. It is obvious that the bolts 12 must not hinder the movement of the knife 16 relative to the stationary knife 11, nor the corresponding tilting of the lever 21.

L'extrémité du levier 21 éloignée du ciseau à trame 10 est dotée d'une rainure 25 s'étendant suivant la direction longitudinale. Dans cette rainure 25 pénètre un arbre 26 qui s'étend parallèlement à l'arbre 24 et qui relie le levier 21 à une seconde bielle 27. Cette dernière est constituée par trois parties pouvant être vissées l'une dans l'autre, ce qui permet d'ajuster la longueur de la bielle. Le levier 21 et la bielle 27 forment une transmission par tringle entre le couteau mobile 16 et le support 28 d'un suiveur de came 29. Ce dernier est une roulette qui circule sur un disque de came 30. Ce dernier est fixé contre une roue dentée 31. Cette dernière et le disque de came 30 sont montés conjointement en rotation libre autour de l'arbre auxiliaire 3. La roue dentée 31 engrène avec une roue dentée 32 de même dimension qui est solidaire de l'arbre d'entraînement 1.The end of the lever 21 remote from the weft chisel 10 is provided with a groove 25 extending in the longitudinal direction. In this groove 25 penetrates a shaft 26 which extends parallel to the shaft 24 and which connects the lever 21 to a second connecting rod 27. The latter consists of three parts which can be screwed into one another, which allows you to adjust the length of the connecting rod. The lever 21 and the connecting rod 27 form a rod transmission between the movable knife 16 and the support 28 of a cam follower 29. The latter is a wheel which circulates on a cam disc 30. The latter is fixed against a wheel toothed 31. The latter and the cam disc 30 are mounted together in free rotation around the auxiliary shaft 3. The toothed wheel 31 meshes with a toothed wheel 32 of the same dimension which is integral with the drive shaft 1.

Le support 28 a approximativement la forme d'un T renversé. Une extrémité de la queue est fixée de façon articulée au moyen d'un petit axe 33 à une extrémité de la bielle 27. A l'endroit de la jonction de la queue et de la tête du T, le support 28 est fixé de façon articulée par un petit axe 34 à un appui 35 qui est fixé à l'arbre auxiliaire 3 et est donc également fixe par rapport au levier de ros 4. L'axe d'articulation 34 oscille donc en va-et-vient conjointement avec le battant 5 et le ros 4 autour de l'arbre 3. Sur une extrémité de la tête du support 28 approximativement en forme de T, le suiveur de came 29 a été fixé à rotation au moyen d'un petit axe 36. L'autre extrémité de la tête est fixée au moyen d'un petit axe 37 à un piston 38 qui pénètre par une extrémité dans une ouverture cylindrique 39 de l'appui 35. Entre le fond de l'ouverture 39 et le piston 38 est situé, dans l'ouverture 39, un ressort de pression 40 qui repousse le piston 38 vers l'extérieur et assure donc que le suiveur de came 29 reste constamment en contact avec le disque de came 30. L'ensemble formé par l'appui 35, le support 28, la transmission constituée par le levier 21 et la bielle 27 et le couteau à trame 10 accompagne l'oscillation du levier de ros 4, du battant 5 et du ros 6. Etant donné que le disque de came 30 tourne également en continu et que le suiveur de came 29 circule sur ce disque de came 30, le support 28 sera amené à effectuer une oscillation alternative autour de son petit axe 34 par rapport à l'ensemble précité. Cette oscillation est transmise par l'intermédiaire du levier 21 et de la bielle 27 au couteau à trame. Dans la position du support 28 illustrée aux figures, le couteau mobile 16 se trouve dans sa position la plus basse et le couteau à trame 10 est donc fermé. Dans cette position, le ros 6 se trouve dans sa position la plus en arrière, c'est-à-dire la plus éloignée du tissu. Lors du pivotement de l'oscillation vers l'avant du ros 6 et à cause de l'oscillation du support 28, le couteau mobile 16 est amené à pivoter par l'intermédiaire de la bielle 27 et du levier 21 et par conséquent le ciseau à trame 10 est ouvert. Une plaque de guidage 41, qui est montée devant la table à tissu 9 sur le bâti 2, repousse le fil de trame dans le ciseau ouvert. Le disque de came 30 est construit de telle sorte qu'immédiatement après le couteau mobile 16 est ramené par pivotement à sa position initiale. De ce fait, le fil de trame est d'abord pincé entre le couteau mobile 16 et la pièce de serrage 18, puis il est découpé. Quand le ros 6 a atteint sa position la plus en avant, le ciseau à trame 10 est complètement fermé. La partie du fil de trame qui vient d'être introduite dans la foule est alors complètement libre de la partie de ce fil provenant de la bobine de réserve ou d'alimentation. L'extrémité la plus en avant de cette dernière partie se trouve encore dans le ciseau, entre le couteau mobile 16 et la pièce de serrage 18. Lors du retour à sa position la plus en arrière du ros 6, la partie du fil de trame qui s'étend entre le ciseau 10 et la bobine d'alimentation est ainsi offerte à une pince 8, de telle sorte que cette dernière peut à nouveau saisir le fil de trame au voisinage immédiat de l'extrémité avant découpée de la dernière partie précitée du fil de trame, afin d'amener celui-ci lors de la phase suivante dans la foule. A cause du fait que le ciseau à trame 10 est monté au voisinage immédiat du ros 6, le découpage d'un fil de trame venant d'être introduit dans la foule a lieu au voisinage immédiat de la lisière et la partie de ce fil de trame provenant encore de la bobine de réserve est également saisie par la pince au voisinage immédiat de l'extrémité découpée. Le mécanisme coupe-trame forme donc aussi un mécanisme pour la présentation du fil de trame à une pince, de telle sorte que cette présentation n'exige aucun mécanisme particulier ou supplémentaire. La perte en fil de trame est donc extrêmement limitée.The support 28 has approximately the shape of an inverted T. One end of the tail is fixed in an articulated manner by means of a small pin 33 to one end of the connecting rod 27. At the place of the junction of the tail and the head of the T, the support 28 is fixed so articulated by a small axis 34 to a support 35 which is fixed to the auxiliary shaft 3 and is therefore also fixed relative to the rose lever 4. The articulation axis 34 therefore oscillates back and forth together with the beating 5 and the ros 4 around the shaft 3. On one end of the head of the support 28 approximately in the shape of a T, the cam follower 29 has been fixed in rotation by means of a small pin 36. The other end of the head is fixed by means of a small axis 37 to a piston 38 which penetrates by one end into a cylindrical opening 39 of the support 35. Between the bottom of the opening 39 and the piston 38 is located, in the opening 39, a pressure spring 40 which pushes the piston 38 outwards and therefore ensures that the cam follower 29 remains constantly in contact with the dis as cam 30. The assembly formed by the support 35, the support 28, the transmission constituted by the lever 21 and the connecting rod 27 and the weft knife 10 accompanies the oscillation of the ros lever 4, of the leaf 5 and of the ros 6. Since the cam disc 30 also rotates continuously and the cam follower 29 circulates on this cam disc 30, the support 28 will have to perform an alternative oscillation around its minor axis 34 relative to all of the above. This oscillation is transmitted via the lever 21 and the connecting rod 27 to the weft knife. In the position of the support 28 illustrated in the figures, the movable knife 16 is in its lowest position and the weft knife 10 is therefore closed. In this position, the ros 6 is in its rearmost position, that is to say the furthest from the tissue. During the pivoting of the forward oscillation of the ros 6 and due to the oscillation of the support 28, the movable knife 16 is caused to pivot via the connecting rod 27 and the lever 21 and therefore the chisel frame 10 is open. A guide plate 41, which is mounted in front of the fabric table 9 on the frame 2, pushes the weft thread into the open chisel. The cam disc 30 is constructed such that immediately after the movable knife 16 is pivotally returned to its initial position. Therefore, the weft thread is first pinched between the movable knife 16 and the clamping piece 18, then it is cut. When the ros 6 has reached its most forward position, the weft scissor 10 is completely closed. The part of the weft thread which has just been introduced into the shed is then completely free from the portion of this thread coming from the reserve or supply coil. The most forward end of this last part is still in the chisel, between the movable knife 16 and the clamping piece 18. When returning to its rearmost position of the ros 6, the part of the weft thread which extends between the chisel 10 and the supply reel is thus offered to a clamp 8, so that the latter can again grasp the weft thread in the immediate vicinity of the cut front end of the last aforementioned part weft thread, in order to bring it during the next phase in the crowd. Due to the fact that the weft scissor 10 is mounted in the immediate vicinity of the ros 6, the cutting of a weft thread having just been introduced into the crowd takes place in the immediate vicinity of the selvedge and the part of this thread weft still coming from the reserve reel is also gripped by the clamp in the immediate vicinity of the cut end. The weft cutter mechanism therefore also forms a mechanism for the presentation of the weft yarn to a clamp, so that this presentation does not require any particular or additional mechanism. The weft loss is therefore extremely limited.

Tandis que la roue dentée 32 et donc aussi la roue dentée associée 31, le disque de came 30 et le support 28 avec le suiveur de came 29 ne peuvent pas être déplacés suivant la direction longitudinale des arbres 1 et 3, le ciseau à trame 10 peut en fait être déplacé suivant cette direction pour permettre une adaptation du mécanisme de découpage à différentes largeurs de tissu. Ceci est obtenu d'une manière simple grâce au fait que le petit axe d'articulation 33, à l'aide duquel la bielle 27 est reliée de façon articulée au support 28, peut coulisser suivant sa direction longitudinale par rapport au support 28. La bielle 27 est située sur un côté autour d'une extrémité de petit diamètre du petit axe 33. Sur cette extrémité est vissé un écrou 42 destiné à maintenir la bielle 27 en position. L'autre partie du petit axe 33, qui a donc un plus grand diamètre, a une relativement grande longueur et pénètre à coulissement à travers une ouverture 43 dans le support 28. De cette façon, le dispositif de découpe décrit précédemment peut être adapté à des largeurs de tissus très différentes et lors d'une éventuelle modification de la largeur du tissu, l'adaptation du mécanisme coupe-trame est très simple. Si lors d'une modification de la largeur du tissu, on remplace le ros 6, on doit simplement déplacer la pièce de fixation 13 du ciseau à trame 10 et la monter à l'endroit correct sur le battant 5. De ce fait, le petit axe 33 coulisse alors par rapport au support 28, de telle sorte que la transmission par tringle entre le ciseau à trame 10 et le support 28 reste assurée.While the toothed wheel 32 and therefore also the associated toothed wheel 31, the cam disc 30 and the support 28 with the cam follower 29 cannot be moved in the longitudinal direction of the shafts 1 and 3, the weft chisel 10 can actually be moved in this direction to allow adaptation of the cutting mechanism to different widths of fabric. This is achieved in a simple way thanks to the fact that the small axis of arti culation 33, by means of which the connecting rod 27 is hingedly connected to the support 28, can slide in its longitudinal direction relative to the support 28. The connecting rod 27 is located on one side around an end of small diameter of the small axis 33. On this end is screwed a nut 42 intended to hold the connecting rod 27 in position. The other part of the minor axis 33, which therefore has a larger diameter, has a relatively large length and slides to penetrate through an opening 43 in the support 28. In this way, the cutting device described above can be adapted to very different fabric widths and when changing the fabric width, adapting the weft cutter mechanism is very simple. If when changing the width of the fabric, we replace the ros 6, we simply have to move the fixing part 13 of the weft chisel 10 and mount it in the correct place on the leaf 5. Therefore minor axis 33 then slides relative to the support 28, so that the transmission by rod between the weft chisel 10 and the support 28 remains ensured.

Il doit être entendu que la présente invention n'est en aucune façon limitée aux formes de réalisation ci-avant et que bien des modifications peuvent y être apportées sans sortir du cadre du présent brevet.It should be understood that the present invention is in no way limited to the above embodiments and that many modifications can be made without departing from the scope of this patent.

Claims (12)

1. Métier à tisser avec dispositif coupe-trame, métier comportant un bâti, un arbre d'entraînement supporté par rapport à ce bâti, un battant monté par rapport à ce bâti avec une possibilité d'oscillation en va-et-vient, des moyens pour faire osciller alternativement le battant, et un mécanisme d'introduction de trame pour introduire une trame dans au moins une foule ou intervalle, tandis que le dispositif coupe-trame coopère avec le mécanisme d'introduction de trame et comprend un ciseau à trame proprement dit avec deux couteaux mobiles l'un par rapport à l'autre et des moyens pour ouvrir et fermer ce ciseau à trame, caractérisé en ce que le ciseau à trame est monté sur le battant et accompagne donc l'oscillation de ce dernier, tandis que les moyens pour ouvrir et fermer le ciseau à trame comprennent un disque de came monté à rotation sur le métier à tisser, une transmission entre le disque de came et l'arbre d'entraînement pour entraîner ce disque de came, un suiveur de came qui circule sur le disque de came, un support sur lequel est monté ce suiveur de came, support qui est monté de façon articulée sur le battant, et une transmission par tringle entre le support et le ciseau à trame afin de transformer un mouvement de pivotement du support en un rabattement d'au moins l'un des couteaux du ciseau à trame.1. Weaving loom with weft cutter device, loom comprising a frame, a drive shaft supported relative to this frame, a leaf mounted relative to this frame with a possibility of oscillation back and forth, means for alternately oscillating the leaf, and a weft introduction mechanism for introducing a weft in at least one crowd or interval, while the weft cutter cooperates with the weft introduction mechanism and comprises a weft scissor proper with two knives movable relative to each other and means for opening and closing this weft chisel, characterized in that the weft chisel is mounted on the leaf and therefore accompanies the oscillation of the latter, while the means for opening and closing the weft scissor include a cam disc rotatably mounted on the loom, a transmission between the cam disc and the drive shaft to drive this cam disc, a follower of cam that circ ule on the cam disc, a support on which is mounted this cam follower, support which is articulated on the leaf, and a rod transmission between the support and the weft chisel in order to transform a pivoting movement of the support by folding down at least one of the knives of the weft chisel. 2. Métier à tisser suivant la revendication 1, caractérisé en ce que la transmission par tringle entre le support du suiveur de came et le ciseau comprend, à une extrémité, une bielle qui est fixée de façon articulée, à une certaine distance de l'axe d'articulation du support, autour d'un axe s'étendant parallèlement à cet axe d'articulation, sur ce support.2. Weaving machine according to claim 1, characterized in that the rod transmission between the support of the cam follower and the chisel comprises, at one end, a connecting rod which is fixed in an articulated manner, at a certain distance from the articulation axis of the support, around an axis extending parallel to this articulation axis, on this support. 3. Métier à tisser suivant la revendication 2, caractérisé en ce que la fixation articulée de la bielle à une extrémité de la transmission par tringle sur le support du suiveur de came, est formée par un arbre par rapport auquel au moins l'un des éléments constitués par la bielle précitée et le support peut tourner, arbre qui peut être déplacé suivant sa direction longitudinale par rapport à au moins l'un des derniers éléments précités.3. A weaving machine according to claim 2, characterized in that the articulated fixing of the connecting rod at one end of the rod transmission on the support of the cam follower, is formed by a shaft with respect to which at least one of the elements formed by the aforementioned connecting rod and the support can rotate, shaft which can be moved in its longitudinal direction relative to at least one of the last aforementioned elements. 4. Métier à tisser suivant l'une quelconque des revendications précédentes, caractérisé en ce que 41 transmission par tringle entre le support du suiveur de came et le ciseau à trame comprend, à une extrémité, un levier relié positivement à l'un des couteaux du ciseau à trame et qui est donc articulé autour de l'axe de rotation autour duquel les couteaux peuvent pivoter l'un par rapport à l'autre, par rapport à l'autre couteau.4. Loom according to any one of the preceding claims, characterized in that 41 rod transmission between the support of the cam follower and the weft chisel comprises, at one end, a lever positively connected to one of the knives of the weft chisel and which is therefore articulated around the axis of rotation around which the knives can pivot relative to each other, relative to the other knife. 5. Métier à tisser suivant les revendications 2 et 4, caractérisé en -ce que la transmission par tringle entre le support du suiveur de came et le ciseau à trame est constituée par une bielle qui, à une certaine distance de l'axe d'articulation du support, est fixée de façon articulée à ce support et par un levier qui est fixé de façon articulée de manière à pouvoir coulisser sur une très petite distance à la bielle et qui est relié rigidement à l'un des couteaux du ciseau.5. Loom according to claims 2 and 4, characterized in that the transmission by rod between the support of the cam follower and the weft chisel is constituted by a connecting rod which, at a certain distance from the axis of articulation of the support, is fixed in an articulated manner to this support and by a lever which is fixed in an articulated manner so as to be able to slide over a very small distance to the connecting rod and which is rigidly connected to one of the knives of the chisel. 6. Métier à tisser suivant l'une quelconque des revendications précédentes, caractérisé en ce que l'une des parties de la transmission par tringle est formée par l'arbre d'entraînement et en ce que le levier est ajustable en longueur.6. Weaving machine according to any one of the preceding claims, characterized in that one of the parts of the rod transmission is formed by the drive shaft and in that the lever is adjustable in length. 7. Métier à tisser suivant l'une quelconque des revendiçatins précédentes, caractérisé en ce que le dispositif coupe-trame comporte une pièce de serrage et des moyens pour repousser cette dernière élastiquement contre l'un des couteaux.7. A weaving machine according to any one of the preceding claims, characterized in that the weft cutter device comprises a clamping part and means for pushing the latter elastically against one of the knives. 8. Métier à tisser suivant la revendication 7, caractérisé en ce que le ciseau à trame comprend une pièce de fixation qui est fixée sur le battant et à laquelle est relié le couteau fixe du ciseau, tandis que le couteau mobile est monté entre le couteau fixe et la pièce de fixation, et la pièce de serrage est montée élastiquement sur cette pièce de fixation et est repoussée contre le couteau mobile.8. Weaving machine according to claim 7, characterized in that the weft chisel comprises a fixing part which is fixed on the leaf and to which the fixed knife of the chisel is connected, while the movable knife is mounted between the knife fixed and the fixing piece, and the clamping piece is resiliently mounted on this fixing piece and is pushed against the movable knife. 9. Métier à tisser suivant l'une quelconque des revendications précédentes, caractérisé en ce que le disque de came est monté à rotation libre autour d'un arbre du métier à tisser et la transmission entre ce disque de came et l'arbre d'entraînement comprend une roue reliée rigidement au disque de came et possédant le même axe de rotation, et des moyens de transmission entre cette roue et l'arbre d'entraînement.9. Weaving machine according to any one of the preceding claims, characterized in that the cam disc is mounted for free rotation around a shaft of the loom and the transmission between this disc of ca me and the drive shaft comprises a wheel rigidly connected to the cam disc and having the same axis of rotation, and transmission means between this wheel and the drive shaft. 10. Métier à tisser suivant la revendication 9, caractérisé en ce que la roue qui est reliée au disque de came est une roue dentée et les moyens de transmission entre cette roue et l'arbre d'entraînement sont constitués par une transmission par engrenage.10. A weaving machine according to claim 9, characterized in that the wheel which is connected to the cam disc is a toothed wheel and the transmission means between this wheel and the drive shaft are constituted by a gear transmission. 11. Métier à tisser suivant l'une quelconque des revendications précédentes, caractérisé en ce que le disque de came est monté à rotation libre autour de l'axe d'oscillation du battant.11. Weaving machine according to any one of the preceding claims, characterized in that the cam disc is mounted for free rotation around the axis of oscillation of the leaf. 12. Dispositif coupe-trame, utilisé dans un métier à tisser suivant l'une quelconque des revendications précédentes.12. Weft cutter device, used in a weaving loom according to any one of the preceding claims.
EP19790102460 1978-07-28 1979-07-16 Loom with weft cutting device and such a device for use therein Expired EP0007543B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BE189601A BE869386A (en) 1978-07-28 1978-07-28 Loom with weft cutting direction and weft cutting device used therein
BE189601 1978-07-28

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EP0007543A1 true EP0007543A1 (en) 1980-02-06
EP0007543B1 EP0007543B1 (en) 1983-04-06

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EP (1) EP0007543B1 (en)
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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0104440A1 (en) * 1982-09-02 1984-04-04 N.V. Michel Van de Wiele Weft yarn control device for shuttleless looms
EP0122087A1 (en) * 1983-04-11 1984-10-17 Draper Corporation Weaving loom selvedge trimmer drive mechanism
EP0517664A1 (en) * 1991-06-03 1992-12-09 Kabushiki Kaisha Toyoda Jidoshokki Seisakusho Weft handling apparatus in a shuttleless loom
CN105463668A (en) * 2016-01-05 2016-04-06 高阳县慧强纺织机械制造有限公司 Weft shearing device

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FR1290866A (en) * 1961-02-14 1962-04-20 Alsacienne Constr Meca Further training in pick cutters in shuttle-less looms
FR1566536A (en) * 1967-03-17 1969-05-09
DE1710291A1 (en) * 1967-04-22 1972-04-20 Lentz Webstuhlfabrik U Eisengi Device for cutting, removing and specifying weft threads on rapier weaving machines
DE2424067A1 (en) * 1973-07-07 1975-01-23 Incotex Sa DEVICE FOR CUTTING, CLAMPING AND FORMING THE WEFT ON WEB MACHINES
FR2277916A1 (en) * 1974-07-10 1976-02-06 Rockwell International Corp WEFT KNIFE SUPPORT DEVICE FOR SHUTTLE Loom
US4077438A (en) * 1976-06-25 1978-03-07 Nissan Motor Company, Limited Weft cutting device for looms

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1290866A (en) * 1961-02-14 1962-04-20 Alsacienne Constr Meca Further training in pick cutters in shuttle-less looms
FR1566536A (en) * 1967-03-17 1969-05-09
DE1710291A1 (en) * 1967-04-22 1972-04-20 Lentz Webstuhlfabrik U Eisengi Device for cutting, removing and specifying weft threads on rapier weaving machines
DE2424067A1 (en) * 1973-07-07 1975-01-23 Incotex Sa DEVICE FOR CUTTING, CLAMPING AND FORMING THE WEFT ON WEB MACHINES
FR2277916A1 (en) * 1974-07-10 1976-02-06 Rockwell International Corp WEFT KNIFE SUPPORT DEVICE FOR SHUTTLE Loom
US4077438A (en) * 1976-06-25 1978-03-07 Nissan Motor Company, Limited Weft cutting device for looms

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0104440A1 (en) * 1982-09-02 1984-04-04 N.V. Michel Van de Wiele Weft yarn control device for shuttleless looms
EP0122087A1 (en) * 1983-04-11 1984-10-17 Draper Corporation Weaving loom selvedge trimmer drive mechanism
EP0517664A1 (en) * 1991-06-03 1992-12-09 Kabushiki Kaisha Toyoda Jidoshokki Seisakusho Weft handling apparatus in a shuttleless loom
CN105463668A (en) * 2016-01-05 2016-04-06 高阳县慧强纺织机械制造有限公司 Weft shearing device

Also Published As

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EP0007543B1 (en) 1983-04-06
DE2965138D1 (en) 1983-05-11

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