EP0016021B1 - Dispositif pour l'insertion de la trame au moyen d'un fluide dans un metier - Google Patents

Dispositif pour l'insertion de la trame au moyen d'un fluide dans un metier Download PDF

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Publication number
EP0016021B1
EP0016021B1 EP79900605A EP79900605A EP0016021B1 EP 0016021 B1 EP0016021 B1 EP 0016021B1 EP 79900605 A EP79900605 A EP 79900605A EP 79900605 A EP79900605 A EP 79900605A EP 0016021 B1 EP0016021 B1 EP 0016021B1
Authority
EP
European Patent Office
Prior art keywords
channel
lamellae
nozzle
weft
thread
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
EP79900605A
Other languages
German (de)
English (en)
Other versions
EP0016021A1 (fr
Inventor
Walter Scheffel
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.)
PETSCHNER, GOETZ
SCHEFFEL, WALTER
Original Assignee
Individual
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 DE2825679A external-priority patent/DE2825679C2/de
Priority claimed from DE19792919026 external-priority patent/DE2919026A1/de
Application filed by Individual filed Critical Individual
Publication of EP0016021A1 publication Critical patent/EP0016021A1/fr
Application granted granted Critical
Publication of EP0016021B1 publication Critical patent/EP0016021B1/fr
Expired legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D47/00—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms
    • D03D47/28—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms wherein the weft itself is projected into the shed
    • D03D47/30—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms wherein the weft itself is projected into the shed by gas jet
    • D03D47/3006—Construction of the nozzles
    • D03D47/302—Auxiliary nozzles

Definitions

  • the invention relates to a device for weft insertion by means of a fluid on a weaving machine, in which the guiding and driving of the weft thread through the shed takes place in a channel, which is formed from a plurality of lamellae and is open towards the reed, with a plurality of nozzles in the channel open for the supply of the transport fluid.
  • DE-OS 2622148 and DE-AS 2608030 by the same applicant have disclosed devices which are comparable to the device in question here. These known arrangements have a flat channel with a diagonal cross-section with a larger opening towards the reed side.
  • This narrow channel which is narrowed at a vertical distance from the plane of the reed and closed off with a curve, offers optimum weft thread transport with low energy consumption and easy release of the inserted weft thread for its stop on the selvedge.
  • the weaving speeds that can be achieved in this way are limited in the mass to be moved of the devices required for the weaving shed formation, so that it is necessary to reduce the lifting height of the shed for increasing working speeds on the shedding devices in order to reduce the measuring forces.
  • the lifting height of the shed can itself be reduced if the flat thread guide channel in its cross-sectional position is brought from its diagonal position into a position parallel to the warp threads with the shed closed. With this measure, the overall height of the lamella channel would be reduced in such a way that the shed could also be reduced accordingly.
  • the slats moved out when the compartment was closed no longer offer any limitation for the weft thread with their upper envelope surface, but instead allow the weft thread to emerge from the channel smoothly regardless of the height of the fabric level.
  • each individual lamella is immersed in the warp thread array of the lower shed in such a way that the upper lamella leg divides the warp threads, whereby this division inevitably continues to the foot of the lamella via the curve rounding off the channel and at a favorable contact angle to the warp thread.
  • this property is lost when the channel cross-section is inclined horizontally, in that the warp threads can no longer slide to the slat base, but instead, after passing through the rounding that closes off the channel, plunge again into the lower slat legs.
  • the channel is delimited on its underside by other lamellae than on the top side, the lower lamellae which form the lower envelope surface being arranged in a different cross-sectional plane of the channel than the upper lamellae which form the upper envelope surface are.
  • each slat can only split the warp threads once in each weaving cycle, so that crossing over within the thread guide channel is impossible. This means that entry errors can no longer be triggered.
  • the device according to the invention in such a way that the upper envelope surface of the channel is approximately parallel to the thread plane of the closed compartment when the sley is in position.
  • the upper and lower slats have different thicknesses.
  • An optimization of the transporting enveloping flow is also achieved in that the cross section of the channel widens after each nozzle and then narrows in the direction of entry to the next nozzle, each nozzle being close to the lateral channel opening and being directed obliquely into the channel.
  • the axis of the exit jet of the nozzle does not intersect the envelope surface of the side of the channel on which the nozzle is located, whereby the nozzle is in a plane that is perpendicular to the Axis of the channel stands and which lies in the area of a vertical extension of the lateral channel opening.
  • a sley 1 with a reed 2 is moved in a circle such that the thread guide channel 7, which is firmly connected to the sley 1 and is formed from lamellae 6 and 19, is inserted into the shed 5 formed from lower warp threads 4 and upper warp threads 3. and emerges.
  • the channel 7 formed from the lamellae 6 and 19 carries nozzles 14 which are arranged at intervals over the weaving width and are supplied with a fluid via supply lines 13.
  • the lying in the lamellae 6 and 19 nozzles 14 with a flow exit direction 15 have a rectilinear feed 13 in multiple lengths of the value of the bore of the nozzle 14, so that their arrangement to the side of the reed 2 through the lower, leaking lamella legs allows that The warp threads of the lower compartment 4 rest on the feeds 13 and also lie in the flow shadow of the lamella leg parts projecting above the feeds 13, as a result of which contact between weft and warp threads is avoided.
  • the thread guide channel 7 consists of lamellae 6, which also carry the curve that closes the channel 7, and of smaller, thinner lamellae 19 therebetween.
  • the two differently, for example alternately arranged lamellae shapes 6, 19 can always share warp threads that are sufficiently separated when immersed .
  • the divided warp threads 3 can thus slide freely on the slats 19, as well as on the slats 6, at a favorable angle 18 to the slat foot or to rest on the feeds 13.
  • the slats 19 have in particular the task of generating the flow shadow for the warp threads 4 resting on the feeds 13, so that contact between the warp threads and the weft threads is avoided.
  • a weaving machine can also be seen from FIGS. 4 and 7, which describes a weaving shed 1 ', which is mounted at 10' and describes the path curve 22 ', a weaving reed 2', the heald frames 9 ', which are connected to the warp threads 3', 4 '.
  • FIG. 4 also shows section A-A in FIG. 5 and FIG. 7 shows section B-B in FIG. 8.
  • the nozzles 14 ' are shown with their differently executable feeds 13', 23 ', 24', 25 ', which are guided through the drawer rail 1', as this from the lamella comb 6 ', 19 ', 20' separately, near the opening of the channel 7 'on the blade side, let the exit jet 15' act on the weft thread in the direction of the main channel axis 8 '.
  • a shed step 12 ' through which the exit beam 15' unhindered up to the channel 7 ', 8 'Final slat part 11', which has at least one curve or a straight shape with angles, can act.
  • the feeds 13 ', 23' carry the nozzles 14 'in such a way that they are in the range of the material thickness of a lamella 6', 16 'or 17', 19 '.
  • the feeds 13 ', 23' allow a particularly streamlined design of the nozzle 14 'with a multiple length of the cross section of the nozzle 14'.
  • the designs of the feed lines 24 ', 25' do not have this optimally favorable shape, the feed 24 'not requiring a shed step 12'.
  • the feeders 26 ', 28' and 30 'shown in FIGS. 7, 8 and 9 are arranged interchangeably, for example, in a separate carrier 32' between the sley 1 'and the slat foot 20'.
  • These feeds 26 ', 28' and 30 ' have an angled portion 27', 29 '31' in the area near the reed-side opening of the channel 7 ', that the nozzles 14 'are respectively downstream behind or in the flow shadow of a lower lamella 19' in the form 17 'and thus in the region of a vertical widening of the leaf-side channel opening.
  • the lower lamellae 19 ' have a uniform curvature on the side directed towards the weft stop.
  • these are of different heights.
  • the lower lamellae 19 'according to shape 17' form a vertical narrowing of the channel 7 'on the leaf side, which is followed by a vertical expansion of the channel opening 7' on the leaf side due to the arrangement of the shape 18 '.
  • the nozzles 14 ' are arranged in the direction of entry behind the lower lamella form 17' or between forms 17 'and 18' and are thus in the region of a vertical expansion of the leaf-side channel opening, which means that the arrangement of the nozzles 14 'is almost in the same plane as the lower lamella 17 'is possible since the unimpeded effect of the exit jet 15' is primary.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
  • Guides For Winding Or Rewinding, Or Guides For Filamentary Materials (AREA)

Abstract

Ce dispositif monte dans un metier, comprend un conduit de guide-fil (7) compose de lamelles superieures (6) et inferieures (19). Ce conduit (7) est ouvert du cote du peigne (2) pour que le fil de trame lance puisse atteindre le peigne (2). La trajectoire du fil est limite du cote inferieur du conduit (7) par d'autres lamelles que du cote superieur. Les lamelles qui forment la surface enveloppante inferieure, penetrent la chaine en d'autres endroits que les lamelles qui forment la surface enveloppante superieure.

Claims (5)

1. Dispositif pour insertion de trame ou moyen d'un fluide sur un métier à tisser, dans lequel le guidage et l'entraînement du fil de trame à travers la foule de tissage s'effectuent dans un canal formé d'une pluralité de lamelles et ouvert en direction du ros, une pluralité de buses, pour l'amenée du fluide de transport, débouchant dans le canal, caractérisé en ce que le canal (7; 8') est limité, sur son côté inférieur, par d'autres lamelles que sur le côté supérieur, les lamelles inférieures (19; 17', 18', 19'), qui constituent la surface enveloppante inférieure, étant disposées respectivement dans un autre plan de section transversale du canal (7; 8') que les lamelles supérieures (6; 6') qui forment la surface enveloppante supérieure.
2. Dispositif selon la revendication 1, caractérisé en ce que la surface enveloppante supérieure du canal (7; 8') est, en position d'insertion du battant (1; 1'), approximativement parallèle au plan des fils de la foule fermée (5; 5').
3. Dispositif selon la revendication 1 ou 2, caractérisé en ce que les lamelles supérieures (6; 6', 16') et les lamelles inférieures (19; 17', 18', 19') présentent des épaisseurs différentes.
4. Dispositif selon la revendication 1, caractérisé en ce que la section transversale du canal (7; 8') s'élargit chaque fois après une buse (14; 14') et se rétrécit ensuite dans le sens d'insertion jusqu'à la buse suivante, chaque buse étant située près de l'ouverture latérale du canal et étant orientée obliquement vers l'intérieur du canal.
5. Dispositif selon la revendication 2, caractérisé en ce que l'axe du jet de sortie (15') de la buse (14') ne coupe pas la surface enveloppante du côté du canal (8') sur lequel se trouve la buse (14'), la buse (14') se trouvant dans un plan qui est perpendiculaire à l'axe du canal (8') et qui est situé au voisinage d'un élargissement vertical de l'ouverture de canal latérale (7').
EP79900605A 1978-06-12 1980-01-29 Dispositif pour l'insertion de la trame au moyen d'un fluide dans un metier Expired EP0016021B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE2825679A DE2825679C2 (de) 1978-06-12 1978-06-12 Vorrichtung zum Schusseintrag an Webmaschinen mittels eines strömenden Mediums
DE2825679 1978-06-12
DE2919026 1979-05-11
DE19792919026 DE2919026A1 (de) 1979-05-11 1979-05-11 Vorrichtung zum schusseintrag an webmaschinen mittels eines stroemenden mediums

Publications (2)

Publication Number Publication Date
EP0016021A1 EP0016021A1 (fr) 1980-10-01
EP0016021B1 true EP0016021B1 (fr) 1983-11-23

Family

ID=25774686

Family Applications (1)

Application Number Title Priority Date Filing Date
EP79900605A Expired EP0016021B1 (fr) 1978-06-12 1980-01-29 Dispositif pour l'insertion de la trame au moyen d'un fluide dans un metier

Country Status (6)

Country Link
EP (1) EP0016021B1 (fr)
CS (1) CS220788B2 (fr)
GB (1) GB2037333B (fr)
IT (1) IT1125356B (fr)
NL (1) NL7904374A (fr)
WO (1) WO1980000087A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0039741A1 (fr) * 1980-05-08 1981-11-18 Walter Scheffel Métier à tisser avec insertion de fil au moyen d'un fluide
FR2534603A1 (fr) * 1982-10-14 1984-04-20 Alsacienne Constr Mat Tex Dispositif permettant de favoriser l'insertion du fil de trame sur un metier a tisser

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH465521A (de) * 1967-12-08 1968-11-15 Sulzer Ag Führungseinrichtung für das Schussfadeneintragsorgan einer Webmaschine
CS165002B1 (fr) * 1970-09-18 1975-11-28
CS149198B1 (fr) * 1971-07-27 1973-05-24

Also Published As

Publication number Publication date
IT7923481A0 (it) 1979-06-12
GB2037333B (en) 1982-11-17
EP0016021A1 (fr) 1980-10-01
IT1125356B (it) 1986-05-14
WO1980000087A1 (fr) 1980-01-24
NL7904374A (nl) 1979-12-14
GB2037333A (en) 1980-07-09
CS220788B2 (en) 1983-04-29

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