EP0239511B1 - Dispositif de formation d'une réserve de fils pour métier à tisser - Google Patents

Dispositif de formation d'une réserve de fils pour métier à tisser Download PDF

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Publication number
EP0239511B1
EP0239511B1 EP19870420074 EP87420074A EP0239511B1 EP 0239511 B1 EP0239511 B1 EP 0239511B1 EP 19870420074 EP19870420074 EP 19870420074 EP 87420074 A EP87420074 A EP 87420074A EP 0239511 B1 EP0239511 B1 EP 0239511B1
Authority
EP
European Patent Office
Prior art keywords
drum
chambers
channel
yarn
wire
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 - Lifetime
Application number
EP19870420074
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0239511A1 (fr
Inventor
Albert Moessinger
Joel Angebault
Daniel Izarn
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
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Alsacienne De Materiel Textile- Samt SA Ste filed Critical Alsacienne De Materiel Textile- Samt SA Ste
Publication of EP0239511A1 publication Critical patent/EP0239511A1/fr
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Publication of EP0239511B1 publication Critical patent/EP0239511B1/fr
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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
    • D03D47/36—Measuring and cutting the weft
    • D03D47/361—Drum-type weft feeding devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H51/00—Forwarding filamentary material
    • B65H51/20—Devices for temporarily storing filamentary material during forwarding, e.g. for buffer storage
    • 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
    • D03D47/36—Measuring and cutting the weft
    • 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
    • D03D47/36—Measuring and cutting the weft
    • D03D47/368—Air chamber storage devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/30—Handled filamentary material
    • B65H2701/31—Textiles threads or artificial strands of filaments

Definitions

  • Such storage devices are known.
  • French application 2,307,065 two open chambers are described, one used to accumulate a loop of wire when the loom is started, the other used to accumulate the loops during the normal phase of the loom's operation. .
  • the length of a stored loop corresponds substantially to the length of a half-pick.
  • the device according to the invention therefore makes it possible to distribute a pick in a plurality of open chambers, in the form of a plurality of elementary loops separated from each other, thus reducing the bulk compared to the first type of reserve described above. above, allowing to store picks of different sizes without additional adjustment, ensuring permanent cleaning.
  • FIG. 1 shows in section a first embodiment of a storage member (1), a nozzle for inserting a general reference pick (2), a suction member for general reference (3).
  • the storage member (1) is in the form of a rotary drum, around a longitudinal shaft (4), driven in rotation by any suitable drive means (5).
  • the storage member (1) comprises, a plurality of open chambers (6), of elongated shape, arranged in the vicinity of the periphery of the drum, and opening onto the front face (1a) and on the rear face (1b) of said drum (1).
  • the chambers are rectilinear and parallel to the axis, of rotation of a cylindrical drum.
  • the drum is conical, the chambers are therefore distributed along a surface of revolution to allow relative rotary movement.
  • the chambers are not perpendicular to the front face (1 a) and form with it an angle of inclination (a) and are not straight (see figure 12).
  • the chambers (6) represent a rectangular section.
  • the drum (1) can be full or have a cavity (29) to facilitate assembly and lighten the part (see Figure 1).
  • the front face (1a) is closed by a cover (7).
  • the rear face (1b) has an extension carrying a threaded hole (8) provided for a screw for fixing the storage member (1) on the shaft (4).
  • a suction member (3) disposed at the rear of the storage member (1) consists of an annular part (3b) and an outlet pipe (3c) whose internal channel is in communication with an annular chamber (13) of the annular part (3b).
  • the annular chamber has an annular opening (12) such that the rear openings of the chambers (6) are located substantially opposite said annular opening (12).
  • suction member (3) The function of the suction member (3) is double it creates sufficient tension of the wire for the elementary loop to form correctly in the chamber and it acts as a vacuum cleaner to remove the fluff and thus avoid accumulation harmful inside the rooms.
  • the flocks are continuously sucked and exit through the conduit (3c) connected to a pipe leading to an expansion pot (26) with a sieve (27) known per se (see FIG. 11).
  • the suction device is advantageously removable and adjustable in position by means of a screw and a light (3a) of a support (28).
  • a pick insertion member (2) is placed at the front of the storage member (1).
  • Said pick inserting member (2) essentially consists of a conventional nozzle or nozzle (2a), see FIG. 1, and a channel (2b).
  • the diameter of the channel (2b) is substantially identical to the thickness of a chamber (6) of the drum.
  • the channel (2b) is fixed and the drum (1) is rotated by a drive means (5) by means of any connecting means, for example a toothed belt ( 9) mounted on two pulleys (11) and (10).
  • the realization of the drive means (5) is within the reach of the skilled person; one can for example provide a double cam system mounted on the loom of the loom, one of which synchronizes with the weft feeder and the other synchronizes with the launching devices (see schematic representation of principle in Figure 10) ; one can also provide a stepping motor.
  • the device is installed, according to FIG. 1, on a loom of the inertial loop insertion type, and operates as described below.
  • the wire is inserted, as the chambers (6) pass in front of the channel ( 2b), in each of the chambers in the form of a succession of elementary loops, with an elementary loop in each chamber (see FIG. 2).
  • the total length of a pick is distributed in several chambers in order to reduce the length of the storage member.
  • the motor (5) drives the drum at speed (V2) in the other direction, and simultaneously takes place the phase of extraction of the wire from the reserve and its launch into the crowd.
  • a mobile clamp (14) has moved in (14 ') so that the wire (13) is grasped by launching rollers (15) and projected in the form of a loop (16) with a strand held (16b) and the other launched (16a) according to a technique known per se.
  • the nozzle (2a) and the suction (3) can continue to operate thus ensuring a regular tension of the wire.
  • the extraction speed (V2) out of the chambers is determined by the insertion members in the crowd (lance, rollers %) while the insertion speed (VI) in the storage member is determined by the weft debtor or by the weigher, depending on the type of trade.
  • V2 of the order of 100 m / s
  • VI of the order of 30 to 40 m / s.
  • the nozzle (2b) does not have the function of determining the flow rate of the wire, it serves as a motor means for the wire.
  • FIG. 2 and FIG. 3 are functionally equivalent;
  • Figure 2 corresponds to the case described above and for which the channel (2b) and its orifice (2c) are stationary while the drum is driven in a rotary movement back and forth;
  • Figure 3 corresponds to the case of a bent channel (2b), rotatable around a predetermined axis (19) for example that of the drum, the orifice describing a rotary movement back and forth while the drum remains stationary.
  • control means (18) is suitable for driving the channel (2b).
  • the advantage of the case of FIG. 2 is to carry out the insertion of the pick without embedding directly in the direction of storage.
  • FIGS. 4 and 5 correspond to the case where one of the members (channel (2b) - drum (1)) rotates in a single direction, the other member remaining stationary.
  • the speed can be constant or vary cyclically depending on the speed of introduction of the wire into the reserve.
  • the slit (17) has the function of reducing the embarrassment of the wire, produced by the distance, at the time of extraction from the chambers, of the orifice (2c) and the orifice of the chamber being emptying, (see figure 7).
  • the shape of this slot extending from one end to the other is possibly substantially helical and its width is sufficient to not retain the wire (3).
  • the function of the cone (20) surrounding the channel (2b) is to limit the balloon and the whipping of the tail produced by the wire during the extraction of the wire from the drum (1); said cone (20) is advantageously made integral with the channel (2b) and the end (21) of said cone made airtight.
  • Figure 6 shows yet another variant of the device.
  • the storage member can indeed be used on other types of weaving looms, for example on a lance loom.
  • the insertion of the taken from the drum is produced by the channel (2b) as in the previous cases, the extraction being carried out by separate means, for example a suction extraction channel (22) or any means capable of extracting a piece of wire from outside. 'room.
  • This type of reserve, used on a lance loom is advantageous in particular by the absence of a balloon during the unwinding phase of the reserve.
  • FIG. 8b a partial section VIII VIII of one of the partitions which represents a slot (21) of wedging in the form of "V", connecting two consecutive openings.
  • Any other braking means such as a coating of rope, sealskin, clamp in the form of two sheets in contact, and / or the addition of a screen (25) covering the openings of the face (1b) are also suitable. to avoid the risks of sliding of the wire around a partition, in one direction or the other, which would cause the exit of a loop by the face (1b).
  • the chambers also have a longitudinal rib (24), central, of height less than the thickness of a chamber (for example half or a third), preferably arranged on the face of the chamber closest to the periphery. of the drum (see fig. 8a).
  • Said longitudinal rib (24) has the function of separating the two strands of the elementary loop introduced into the chamber and thus avoiding the risks of formation of tendrils and knots.
  • the main objectives of the invention are achieved: - due to the significant reduction in the length of the reserve, the total length (L) to be accelerated at the start of insertion into the crowd is reduced.
  • the length L corresponding to the length of the drum (2) added to the distance between the drum and the launching means, is shown in Figure 1.
  • - and after departure, the portion of wire to be accelerated on each extraction out of 'a chamber is substantially the length (f), instead of a half pick.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
  • Forwarding And Storing Of Filamentary Material (AREA)
EP19870420074 1986-03-27 1987-03-17 Dispositif de formation d'une réserve de fils pour métier à tisser Expired - Lifetime EP0239511B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8604652A FR2596426B1 (fr) 1986-03-27 1986-03-27 Dispositif de formation d'une reserve de fils pour metier a tisser
FR8604652 1986-03-27

Publications (2)

Publication Number Publication Date
EP0239511A1 EP0239511A1 (fr) 1987-09-30
EP0239511B1 true EP0239511B1 (fr) 1990-01-24

Family

ID=9333770

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19870420074 Expired - Lifetime EP0239511B1 (fr) 1986-03-27 1987-03-17 Dispositif de formation d'une réserve de fils pour métier à tisser

Country Status (4)

Country Link
EP (1) EP0239511B1 (ja)
JP (1) JPS6321954A (ja)
DE (1) DE3761492D1 (ja)
FR (1) FR2596426B1 (ja)

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7018896A (ja) * 1970-12-28 1972-06-30
CH561795A5 (ja) * 1973-01-24 1975-05-15 Saurer Ag Adolph
CS180188B1 (en) * 1974-11-15 1977-12-30 Zdenek Sevcik Device for storing a reserve of thread,especially weft thread for unorthodox weaving machines
NL7504245A (nl) * 1975-04-09 1976-10-12 Rueti Te Strake Bv Magazijn voor het vormen van lusvormige garen- lengten in een textielmachine, meer in het bij- zonder in een spoelloze weefmachine.
DE2802913B1 (de) * 1978-01-24 1978-11-09 Schubert & Salzer Maschinen Saugluftduese zur Bildung einer Fadenreserve
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
GB2136462A (en) * 1983-03-04 1984-09-19 Hollingsworth Yarn handling process and apparatus

Also Published As

Publication number Publication date
FR2596426A1 (fr) 1987-10-02
FR2596426B1 (fr) 1988-05-20
JPS6321954A (ja) 1988-01-29
EP0239511A1 (fr) 1987-09-30
DE3761492D1 (de) 1990-03-01

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