EP0232665A1 - Verfahren und Vorrichtung zum Eintragen des Schussfadens in das Webfach einer Webmaschine - Google Patents

Verfahren und Vorrichtung zum Eintragen des Schussfadens in das Webfach einer Webmaschine Download PDF

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Publication number
EP0232665A1
EP0232665A1 EP86420308A EP86420308A EP0232665A1 EP 0232665 A1 EP0232665 A1 EP 0232665A1 EP 86420308 A EP86420308 A EP 86420308A EP 86420308 A EP86420308 A EP 86420308A EP 0232665 A1 EP0232665 A1 EP 0232665A1
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EP
European Patent Office
Prior art keywords
reserve
wire
action
nozzle
deliverer
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
EP86420308A
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English (en)
French (fr)
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EP0232665B1 (de
Inventor
Albert Moessinger
Joel Angebault
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Alsacienne De Materiel Textile- Samt SA Ste
Original Assignee
Alsacienne De Materiel Textile- Samt SA Ste
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Application filed by Alsacienne De Materiel Textile- Samt SA Ste filed Critical Alsacienne De Materiel Textile- Samt SA Ste
Publication of EP0232665A1 publication Critical patent/EP0232665A1/de
Application granted granted Critical
Publication of EP0232665B1 publication Critical patent/EP0232665B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D47/00—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms
    • D03D47/34—Handling the weft between bulk storage and weft-inserting means

Definitions

  • the present invention relates to the textile industry and more particularly to an improvement made to non-shuttle weaving machines in which the weft is inserted from food reels (or equivalent supports) arranged outside the crowd.
  • Such machines use means for inserting the weft into the crowd of different types such as fluid jets, lances or pincer projectiles, kinetic energy of the weft thread, etc.
  • the weft thread to be inserted is prepared in advance in length or picks corresponding to the desired width of width and stored successively in a reserve member before being introduced into the crowd.
  • the present invention aims to solve this problem.
  • this technique of launching by inertia a technique according to which the weft thread is launched into the crowd in the form of a rolling loop, therefore involves preparing the pick before its launch.
  • This preparation consists in accumulating a length of wire measured in a reserve, placed between the wire supply source (spool) and the side of the machine where the pick is to be inserted, then in extracting said wire from this reserve when its launch.
  • this extraction of the reserve can be carried out by the same channel as that by which the wire was introduced but in the opposite direction. This therefore necessarily involves a change in the trajectory of the wire during these displacements, on the one hand from the measurer delivering to the reserve and, on the other hand, from the reserve to the launching member in the direction of the crowd.
  • FR 2 538 008 (US 4 544 001) describes a solution which makes it possible to overcome these drawbacks, a solution which, in general, consists, as is moreover mentioned in FR 2 506 795, of positioning waiting the end of the wire which has just been cut between the measuring device and the storage means.
  • a standby is carried out in the zone extending between the entry into the reserve and the exit of the deliverer by means of guide conduits which, optionally, can be extended as close as possible to the wire cutting scissors at the edge of the fabric.
  • the cut end is reintroduced first into said reserve, generally under the action of a current of air which pushes the wire and it can happen that this end agglomerates in the form of pellets or, in general, takes a more or less sinuous form which disturbs its scheduling and its withdrawal from the reserve during launching.
  • the present invention eliminates these drawbacks and therefore relates to an improved process, applicable not only in the case of one color looms, but also in the case of multi-color looms as well as a device allowing the implementation of said process.
  • the invention therefore relates to an improvement made to the process allowing the insertion of picks into the shed of a weaving machine, process in which a metering deliverer feeds a storage member where a determined length of yarn is put in reserve, said length of wire being taken in the interval between the output of the deliverer and the storage member to be inserted in the crowd formed by the warp threads then pinched near the edge of the fabric and cut, l end of the cut wire being put in the waiting position before being reintroduced again into the storage member for a new insertion and is characterized in that said putting in the waiting position of the cut end is carried out in an independent circuit outside the path connecting the output of the measurer and the entry into the reserve, the reintroduction of the wire inside the reserve being carried out so that the cut end is reintroduced at f elm of a loop taking place from a fixed point at the exit of the deliverer to the entry inside the reserve under the action of an air current, the weft thread not being resub
  • the invention also relates to a device allowing the implementation of the method, this device being characterized essentially by the fact that temporary storage means (waiting lane) of the end of the cut wire are provided, between the output of the deliverer measurer and the cutting member near the selvedge, and this outside the path followed by the wire on the one hand, between the measurer and the reserve and on the other hand, when launching from the reserve to the inside the crowd, these means making it possible to keep the wire taut under the action of a current of air before it is introduced into the reserve under the action of the measurer.
  • temporary storage means waiting lane
  • the storage member When the invention is applied to a one-color loom, the storage member will be placed in the launch plan whereas in the case where the invention is applied to a multi-color loom, there will be as many storage members as types of picks to be inserted, said storage members being oriented so as to guide the wire in a plane intersecting the launching plane, the wires therefore being stored in n planes converging towards the launch plan.
  • FIGS. 1, 1a, 1b illustrate an embodiment of the method according to the invention on a weaving loom in which the weft feeding is carried out from a single food spool (so-called "one color” loom) .
  • such a type of loom comprises, in accordance with the invention, for the insertion of the weft thread inside the crowd formed by the warp threads (1) which are separated in two tablecloths (2,3) by the heddles (4) and which is limited by the fabric (5) by a conventional non-drawn comb, an assembly which can be subdivided into three zones, namely: - A zone called the feeding zone, making it possible to deliver and measure a determined length of weft yarn corresponding to the length of the pick to be inserted; - an area B called storage and launch area, - a zone C called the waiting zone.
  • Zones A and B are produced in a similar manner to that which is the subject of French patents 2,506,795 and 2,538,008 (US A 4,544,001) and their structure and operation are as follows.
  • the feed zone A essentially consists of a metering deliverer (6), of any known type, for example of the type with rotating rollers (6a, 6b).
  • the weft thread (7) comes from a food reel (8) and passes through a shield (9), a brake (10) and a guide (11) allowing it to be subjected to the action of the deliverer (6).
  • a nozzle (16) which keeps the wire taut at the outlet of the deliverer (6) and facilitates its introduction into the reserve itself, as will be seen in more detail in the continuation of the description.
  • the storage and launching assembly B is constituted in a manner similar to the teachings of FR-A-2,538,008, (US A 4,544,001) and therefore essentially consists of a storage chamber (17) which is used to temporarily accumulate a determined length of weft thread (6) before launching into the crowd formed by the warp threads (1).
  • This storage chamber (17) comprises at its entrance a guide duct (18), oriented in the direction of insertion of the weft inside the shed and which is extended laterally by a split duct (19), which projects laterally with respect to the launching rollers proper (20a, 20b), the inlet (21) of this conduit (19) being arranged opposite the outlet (22) of the supply channel (14).
  • a space remains between the outlet (22) and the inlet (21) to allow the thread to be taken up by the element (23), clamp for example carried by a belt in order to introduce the thread between the launching rollers (20a, 20b) at launch.
  • a nozzle (24) is provided in the vicinity of the elbow formed between the conduit (19) and the tube (18), so as to breathe air inside said tube (18).
  • these two sets A and B of supply and storage / launching of the weft thread have, as said previously, a structure and an operation which is to be compared to those of the French patents 2 506 795 and 2 538 008 (us A 4 544 001).
  • the thread is brought between the measuring device (6), passes inside the funnel (13 ), the channel (14) for, through the conduits (19) and (18) to accumulate inside the reserve (17).
  • the wire is gripped between the ends (22) and (21) of the channels (14) and (19) to be brought into the line of tangency of the launching rollers (20a, 20b) and is launched into the crowd under the shape of a loop (25) having a launched strand (26) and a held strand (27).
  • the strand held (27) is taken by pliers (28) and is cut by scissors (29) located near the edge of the fabric (5).
  • this strand of wire is kept on standby in circuit C , an essential characteristic of the present application.
  • Such a standby circuit is constituted by an assembly whose structure is such that, in accordance with the method according to the present invention, said wire thus placed on standby is reintroduced inside the reserve (17) in the form of a taut dart, this being obtained by reintroducing it inside the channel (14) in a progressive manner and by keeping its free end against the waiting zone.
  • the end of the wire between the outlet of the nozzle (16) and the chisel (29) is reintroduced inside the channel of the conduit (14) in the form of a loop (shown in points in Figure 1) which unfolds gradually to reach the entry (21) for introduction into the reserve (17).
  • the measuring delivery device (6) is only activated when the wire is thus well repositioned, thanks to the combined action air from the conduits (16) and (24), which allows the wire to be introduced inside the reserve precisely.
  • the assembly for putting the thread on standby after cutting consists essentially of a chamber (30) formed of two parallel plates (31,32), chamber whose bottom (33) extends between the nozzle (16) and the scissors (29) and which is arranged substantially in the plane of launch of the weft thread.
  • This chamber is subjected to the action of a suction nozzle (34) which keeps the end of the cut wire taut.
  • the side walls of this chamber favor the guidance and the maintenance of the wire when it is reintroduced inside the conduit (14) when a new measurement has to be carried out.
  • the distance going from the nozzle (16) to the scissor (29) is slightly greater than that going from the nozzle (16) to the zone of action of the nozzle (24) in the conduit. (18).
  • the four wires (7a-d) come from four coils (8a-d) and arrive in control eyelets (11a-d) after having passed through the shields (9a-d) and the brakes (10a -d).
  • the wire (a) enters on the left side, the wire (b) on the right side of the measurer (6 ⁇ ) as well as the wire (c) on the left side and the wire (d) on the right side of the measurer ( 6 ⁇ ).
  • the storage and launch assembly itself is identical to that described in the previous example and will therefore not be re-described.
  • the supply of the wires to this storage and launching assembly is carried out, as previously, by means of an assembly comprising, for each wire a funnel (13a-13d), a blowing nozzle (16a-16d) and a split conduit (14a-14d) directed towards the insertion orifice (21) of the tube (19) disposed opposite the nip between the throwing rollers (20a-20b). Consequently, taking into account the plurality of circuits, the funnels (13a-13d) and conduits (14a-14d) diverge from each other so that their inlet is correctly oriented towards the nip of the measuring rollers (see FIG. 3 ) whereas, on the other hand, the split tubes (14a-14d) allowing the introduction of the wire inside the reserve converge towards this inlet (21).
  • a circuit C for placing the end of the wire on standby after cutting.
  • Such a standby circuit is constituted by the juxtaposition of four circuits similar to that described in the previous example and which consist of four superimposed chambers 30a-30d consisting for example of plates. As is apparent in particular from FIGS. 2 and 3, these holding chambers are oriented to converge towards the launching plane proper.
  • Such a device works the same so as above, namely that after cutting, the free ends of the wires are held by suction nozzles (34) in the waiting chambers and that, during launching, at first, the free end is unfolded gradually under the action of the nozzle (16) to be introduced in the form of a loop which unfolds inside the split tubes (14) then, from there, is transferred inside the channel introduction (19) leading to the reserve itself (17).
  • the weft thread which must be accumulated in the reserve is subjected to the action of its deliverer only when this free end has been thus reintroduced to be stretched under the action of the nozzle (24) in the circuit leading to the reserve, the introduction can therefore be done in a perfectly taut manner.
  • the present invention offers numerous advantages by the fact that there is precise guidance of the strand of wire between the outlet of the measurer and the scissors, strand which must be reintroduced later in the reserve and that, moreover, in the case where several different wires must be used, these wires are put on standby outside the very launching circuit which is therefore not disturbed.
EP86420308A 1985-12-31 1986-12-23 Verfahren und Vorrichtung zum Eintragen des Schussfadens in das Webfach einer Webmaschine Expired - Lifetime EP0232665B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8519571 1985-12-31
FR8519571A FR2592402B1 (fr) 1985-12-31 1985-12-31 Procede et dispositif pour l'insertion des fils de trame (duites) dans la foule d'un metier a tisser.

Publications (2)

Publication Number Publication Date
EP0232665A1 true EP0232665A1 (de) 1987-08-19
EP0232665B1 EP0232665B1 (de) 1990-04-11

Family

ID=9326429

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86420308A Expired - Lifetime EP0232665B1 (de) 1985-12-31 1986-12-23 Verfahren und Vorrichtung zum Eintragen des Schussfadens in das Webfach einer Webmaschine

Country Status (7)

Country Link
US (1) US4756343A (de)
EP (1) EP0232665B1 (de)
JP (1) JPS62184144A (de)
BR (1) BR8606511A (de)
DE (1) DE3670313D1 (de)
ES (1) ES2014432B3 (de)
FR (1) FR2592402B1 (de)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006025265A1 (de) * 2006-05-31 2007-12-06 Lindauer Dornier Gmbh Verfahren und Vorrichtung zum Bilden einer Gewebekante an einer Greiferwebmaschine
WO2013112717A1 (en) 2012-01-24 2013-08-01 Nike International Ltd. Weaving using reactive materials
WO2013112684A1 (en) 2012-01-24 2013-08-01 Nike International Ltd. Intermittent weaving splicer
US8800606B2 (en) * 2012-01-24 2014-08-12 Nike, Inc. Weaving finishing device
DE102015217356B3 (de) * 2015-09-10 2016-10-20 Lindauer Dornier Gesellschaft Mit Beschränkter Haftung Webmaschine mit einer Vorrichtung sowie Verfahren zum Halten, Zubringen und Eintragen von Schussfäden in ein Webfach

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2477587A1 (fr) * 1980-03-05 1981-09-11 Albert Moessinger Dispositif pour l'insertion d'un fil de trame dans la foule d'un metier a tisser
FR2495196A1 (fr) * 1980-11-28 1982-06-04 Alsacienne Constr Meca Procede et dispositif de formation d'une reserve de fil de trame pour metiers a tisser
FR2506795A1 (fr) * 1981-06-01 1982-12-03 Alsacienne Constr Meca Procede et dispositif pour l'insertion de duites selon une sequence donnee sur une machine a tisser
FR2532666A1 (fr) * 1982-09-03 1984-03-09 Alsacienne Constr Mat Tex Procede pour l'insertion sous forme de boucle d'un fil de trame dans la foule d'une machine a tisser et machine a tisser equipee d'un dispositif permettant la mise en oeuvre de ce procede
FR2538008A1 (fr) * 1982-12-17 1984-06-22 Alsacienne Constr Mat Tex Dispositif pour l'insertion d'un fil de trame dans la foule d'un metier a tisser

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4509563A (en) * 1981-03-02 1985-04-09 Mecaniques De Mulhouse Societe Alsacienne De Constructions Device for the insertion of a weft thread into the shed between two lines of warp thread in a weaving loom

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2477587A1 (fr) * 1980-03-05 1981-09-11 Albert Moessinger Dispositif pour l'insertion d'un fil de trame dans la foule d'un metier a tisser
FR2495196A1 (fr) * 1980-11-28 1982-06-04 Alsacienne Constr Meca Procede et dispositif de formation d'une reserve de fil de trame pour metiers a tisser
FR2506795A1 (fr) * 1981-06-01 1982-12-03 Alsacienne Constr Meca Procede et dispositif pour l'insertion de duites selon une sequence donnee sur une machine a tisser
FR2532666A1 (fr) * 1982-09-03 1984-03-09 Alsacienne Constr Mat Tex Procede pour l'insertion sous forme de boucle d'un fil de trame dans la foule d'une machine a tisser et machine a tisser equipee d'un dispositif permettant la mise en oeuvre de ce procede
FR2538008A1 (fr) * 1982-12-17 1984-06-22 Alsacienne Constr Mat Tex Dispositif pour l'insertion d'un fil de trame dans la foule d'un metier a tisser

Also Published As

Publication number Publication date
EP0232665B1 (de) 1990-04-11
JPS62184144A (ja) 1987-08-12
BR8606511A (pt) 1987-10-20
DE3670313D1 (de) 1990-05-17
US4756343A (en) 1988-07-12
FR2592402A1 (fr) 1987-07-03
FR2592402B1 (fr) 1988-03-18
ES2014432B3 (es) 1990-07-16

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