EP0007543A1 - Webstuhl mit Schussfadenschneidvorrichtung und darin verwendete Schussfadenschneidvorrichtung - Google Patents

Webstuhl mit Schussfadenschneidvorrichtung und darin verwendete Schussfadenschneidvorrichtung Download PDF

Info

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
Authority
EP
European Patent Office
Prior art keywords
weft
support
chisel
loom
transmission
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP19790102460
Other languages
English (en)
French (fr)
Other versions
EP0007543B1 (de
Inventor
André Dewispelaere
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.)
Cessione ferromatrix Nv
Original Assignee
"pvba Van De Wiele International"
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
Priority claimed from BE189601A external-priority patent/BE869386A/nl
Application filed by "pvba Van De Wiele International" filed Critical "pvba Van De Wiele International"
Publication of EP0007543A1 publication Critical patent/EP0007543A1/de
Application granted granted Critical
Publication of EP0007543B1 publication Critical patent/EP0007543B1/de
Expired legal-status Critical Current

Links

Images

Classifications

    • 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.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
EP19790102460 1978-07-28 1979-07-16 Webstuhl mit Schussfadenschneidvorrichtung und darin verwendete Schussfadenschneidvorrichtung Expired EP0007543B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BE189601 1978-07-28
BE189601A BE869386A (nl) 1978-07-28 1978-07-28 Weefgetouw met inslagsnijrichting en inslagsnijinrichting daarbij gebruikt

Publications (2)

Publication Number Publication Date
EP0007543A1 true EP0007543A1 (de) 1980-02-06
EP0007543B1 EP0007543B1 (de) 1983-04-06

Family

ID=3843138

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19790102460 Expired EP0007543B1 (de) 1978-07-28 1979-07-16 Webstuhl mit Schussfadenschneidvorrichtung und darin verwendete Schussfadenschneidvorrichtung

Country Status (2)

Country Link
EP (1) EP0007543B1 (de)
DE (1) DE2965138D1 (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0104440A1 (de) * 1982-09-02 1984-04-04 N.V. Michel Van de Wiele Schusssteuereinrichtung für Greiferwebmaschinen und Greiferwebmaschinen, die mit einer derartigen Schusssteuereinrichtung ausgerüstet sind
EP0122087A1 (de) * 1983-04-11 1984-10-17 Draper Corporation Antriebsvorrichtung für die Leistenschneideinrichtung einer Webmaschine
EP0517664A1 (de) * 1991-06-03 1992-12-09 Kabushiki Kaisha Toyoda Jidoshokki Seisakusho Schussfadenhandhabungseinrichtung für schützenlose Webmaschinen
CN105463668A (zh) * 2016-01-05 2016-04-06 高阳县慧强纺织机械制造有限公司 一种剪纬装置

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1290866A (fr) * 1961-02-14 1962-04-20 Alsacienne Constr Meca Perfectionnement aux dispositifs de coupe de duites dans les métiers à tisser sans navette
FR1566536A (de) * 1967-03-17 1969-05-09
DE1710291A1 (de) * 1967-04-22 1972-04-20 Lentz Webstuhlfabrik U Eisengi Einrichtung zum Schneiden,Abnehmen und Angeben von Schussfaeden an Greiferwebmaschinen
DE2424067A1 (de) * 1973-07-07 1975-01-23 Incotex Sa Vorrichtung zum abschneiden, klemmen und vorlegen des schussfadens an webmaschinen
FR2277916A1 (fr) * 1974-07-10 1976-02-06 Rockwell International Corp Dispositif de support de couteau de trame pour metier a tisser sans navette
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 (fr) * 1961-02-14 1962-04-20 Alsacienne Constr Meca Perfectionnement aux dispositifs de coupe de duites dans les métiers à tisser sans navette
FR1566536A (de) * 1967-03-17 1969-05-09
DE1710291A1 (de) * 1967-04-22 1972-04-20 Lentz Webstuhlfabrik U Eisengi Einrichtung zum Schneiden,Abnehmen und Angeben von Schussfaeden an Greiferwebmaschinen
DE2424067A1 (de) * 1973-07-07 1975-01-23 Incotex Sa Vorrichtung zum abschneiden, klemmen und vorlegen des schussfadens an webmaschinen
FR2277916A1 (fr) * 1974-07-10 1976-02-06 Rockwell International Corp Dispositif de support de couteau de trame pour metier a tisser sans navette
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 (de) * 1982-09-02 1984-04-04 N.V. Michel Van de Wiele Schusssteuereinrichtung für Greiferwebmaschinen und Greiferwebmaschinen, die mit einer derartigen Schusssteuereinrichtung ausgerüstet sind
EP0122087A1 (de) * 1983-04-11 1984-10-17 Draper Corporation Antriebsvorrichtung für die Leistenschneideinrichtung einer Webmaschine
EP0517664A1 (de) * 1991-06-03 1992-12-09 Kabushiki Kaisha Toyoda Jidoshokki Seisakusho Schussfadenhandhabungseinrichtung für schützenlose Webmaschinen
CN105463668A (zh) * 2016-01-05 2016-04-06 高阳县慧强纺织机械制造有限公司 一种剪纬装置

Also Published As

Publication number Publication date
DE2965138D1 (en) 1983-05-11
EP0007543B1 (de) 1983-04-06

Similar Documents

Publication Publication Date Title
EP0079843A1 (de) Elektromagnetisches Verfahren zum Steuern von Schaftmaschinen
FR2464319A1 (fr) Tete de griffe pour metiers a tisser avec prelevement du fil de trame a partir de bobines fixes
EP0007543B1 (de) Webstuhl mit Schussfadenschneidvorrichtung und darin verwendete Schussfadenschneidvorrichtung
EP0371919A1 (de) Nähmaschine
CA1039152A (fr) Machine a tisser a alimentation exterieure
FR2703698A1 (fr) Mécanisme amélioré pour transmettre l'instruction de sélection concernant la position de battement du peigne dans un métier à tisser les tissus-éponges.
FR2610646A1 (fr) Dispositif de sectionnement du fil de trame pour metier a tisser
FR2464320A1 (fr) Organe d'insertion du fil de trame dans les metiers a tisser avec prelevement du fil de trame a partir de bobines fixes
CH664776A5 (fr) Dispositif de selection de fils pour metier a tricoter.
FR2678649A1 (fr) Machine a broder.
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
CH577575A5 (en) Rapier loom - in which weft threads are carried on vertical flexible tapes with reed and finger supports
FR2613271A1 (fr) Dispositif pour realiser au choix dans une bande de materiau en mouvement continu des echancrures ou des trous ou des trous d'aiguille servant a la purge de l'air
EP0119122B1 (de) Vorrichtung zum Übertragen des Schussfadens an der Eintragsnadel einer Webmaschine und mit einer solchen Vorrichtung versehene Webmaschine
CH653715A5 (fr) Mecanisme de transformation de metiers a tisser a navette en metiers a tisser sans navette.
EP0030061A2 (de) Brotschneidemaschine
BE541343A (de)
EP0388336B1 (de) Fadenklemmvorrichtungen, montiert auf dem Schussorgan von Webstühlen mit festem Reservefaden
EP0543688A1 (de) Silofutterschneider
FR2466545A1 (fr) Dispositif de coupe d'un reseau de fils tendus entre deux nappes de tissu
CH558842A (fr) Dispositif destine a deplacer en va-et-vient les verges dans un metier a tisser.
CH317329A (fr) Machine pour la fabrication et pour le scellage à chaud de sacs
EP0385893A1 (de) Vorrichtung zum selektiven Halten der Schussfadenspannung bei Webemaschinen
BE535543A (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): CH DE FR GB IT NL

17P Request for examination filed
ITF It: translation for a ep patent filed
GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Designated state(s): CH DE FR GB IT NL

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

Ref country code: NL

Effective date: 19830406

REF Corresponds to:

Ref document number: 2965138

Country of ref document: DE

Date of ref document: 19830511

NLV1 Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
REG Reference to a national code

Ref country code: FR

Ref legal event code: CA

REG Reference to a national code

Ref country code: FR

Ref legal event code: CL

REG Reference to a national code

Ref country code: FR

Ref legal event code: TP

REG Reference to a national code

Ref country code: CH

Ref legal event code: PUE

Owner name: N.V. FERROMATRIX

ITPR It: changes in ownership of a european patent

Owner name: CESSIONE;FERROMATRIX N.V.

REG Reference to a national code

Ref country code: GB

Ref legal event code: 732

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: FR

Payment date: 19930526

Year of fee payment: 15

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

Ref country code: CH

Payment date: 19930608

Year of fee payment: 15

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

Ref country code: GB

Payment date: 19930705

Year of fee payment: 15

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

Ref country code: DE

Payment date: 19930728

Year of fee payment: 15

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

Ref country code: GB

Effective date: 19940716

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

Ref country code: CH

Effective date: 19940731

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19940716

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

Ref country code: FR

Effective date: 19950331

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: 19950401

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

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