WO1996030574A1 - Metier mecanique a buses a air - Google Patents

Metier mecanique a buses a air Download PDF

Info

Publication number
WO1996030574A1
WO1996030574A1 PCT/EP1996/001224 EP9601224W WO9630574A1 WO 1996030574 A1 WO1996030574 A1 WO 1996030574A1 EP 9601224 W EP9601224 W EP 9601224W WO 9630574 A1 WO9630574 A1 WO 9630574A1
Authority
WO
WIPO (PCT)
Prior art keywords
air
main blowing
weaving machine
air jet
area
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.)
Ceased
Application number
PCT/EP1996/001224
Other languages
German (de)
English (en)
Inventor
Jozef Peeters
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.)
Picanol NV
Original Assignee
Picanol NV
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 Picanol NV filed Critical Picanol NV
Publication of WO1996030574A1 publication Critical patent/WO1996030574A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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
    • D03D47/3026—Air supply systems
    • D03D47/3053—Arrangements or lay out of air supply systems
    • 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
    • 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
    • D03D47/3013—Main nozzles
    • 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
    • D03D47/3026—Air supply systems
    • 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
    • D03D49/02—Construction of loom framework
    • D03D49/022—Protective hoods or curtains

Definitions

  • the invention relates to an air jet weaving machine with at least two main blowing nozzles arranged in series for inserting a weft thread into a shed formed from warp threads, the first main blowing nozzle being arranged between a weft thread preparation device and the second, with a weaving shutter having a movable main blowing nozzle is.
  • Such an air jet loom is known, for example, from US Pat. No. 4,903,739.
  • two or more insertion devices for the weft threads are provided, which contain two main blowing nozzles arranged in series one behind the other.
  • the first main blowing nozzle takes the weft thread from a weft thread preparation device and delivers it to the second main blowing nozzle, which then introduces the weft thread into a weft insertion channel of a reed.
  • the first main blowing nozzle is arranged in such a way that its blowing direction extends essentially axially to the preceding weft thread preparation device.
  • the second main blowing nozzle is directed in such a way that its blow-out direction is directed essentially parallel to the weft insertion channel of the reed. This usually results in an angular deviation between the blowing direction of the first main blowing nozzle and the second main blowing nozzle.
  • the invention is based on the object of designing an air-jet loom of the type mentioned at the outset in such a way that the number of warp thread breaks is reduced.
  • This object is achieved in that the area of the shed is at least partially shielded from the first main blowing nozzle by means of at least one air guide.
  • the invention is based on the knowledge that the first main blowing nozzle in each case releases a relatively large amount of dust and fiber fly from the weft thread, in particular when weft threads made of flax, cotton, wool or similar material are woven, which then, in particular, due to the blowing direction of the first main blowing nozzle the area of the rear compartment is blown in and then deposited as flakes on the warp threads in the rear compartment. Such flakes of dust can then be the cause of warp thread breaks, which lead to the loom coming to a standstill and / or reducing the quality of the fabric.
  • the shielding according to the invention it is achieved that the dust and fiber fly released from the first main blowing nozzles does not reach the area of the shed and in particular the area of the back compartment, but is already diverted beforehand.
  • the number of warp thread breaks caused by dust deposits can thus be significantly reduced.
  • the air guiding means is attached in a stationary manner to a weaving machine frame and essentially shields the area of a rear compartment. This already leads to a significant improvement, since dust deposits in the area of the rear compartment are particularly critical. Such shielding does not interfere with the movement of the sley and the elements mounted thereon and the movements of the weft threads, since the Movement of the sley is restricted to the area of the front compartment.
  • the air guiding means extends over the area of a front compartment and is provided in this area with a slot-like recess for elements mounted on the sley and / or for the weft thread.
  • the slot-like recess allows the air guide means to be arranged in a stationary manner without the movement of the sley and the elements mounted thereon, in particular the second main blowing nozzles, and the weft threads being impeded.
  • FIG. 1 shows a schematic partial view of an air jet loom with a shield according to the invention
  • FIG. 2 is a view in the direction of arrow F2 of the air jet loom according to FIG. 1,
  • FIG. 3 is a partial plan view of a modified shield similar to section F3 of FIG. 1,
  • Fig. 4 is a partial view of an air jet loom similar to Fig. 1 with a modified shield and
  • Fig. 5 shows a detail of the air jet loom according to Fig. 4 in the direction of arrow F5.
  • the air jet weaving machine shown in FIGS. 1 and 2 has two feed devices for weft threads (10, 11).
  • the weft threads (10, 11) are drawn off from the weft thread bobbins (12, 13) by means of a weft thread preparation device (4, 5) which is, for example, a prewinder.
  • the weft thread preparation Equipping devices (4, 5) follow first main blowing nozzles (2, 3), which are attached to a weaving machine frame (22) in a stationary manner.
  • the blowing direction of the two main blowing nozzles (2, 3) runs essentially in the thread take-off direction of the weft thread preparation devices (4, 5).
  • the main blowing nozzles (2, 3) are each arranged in series with main blowing nozzles (8, 9), the blowing direction of which essentially runs in the direction of a weft insertion channel of a reed (7).
  • the main blowing nozzles (8, 9) and the reed (7) are arranged on a sley (6).
  • the blowing direction of the first main blowing nozzles (2, 3), i.e. the stationary main blowing nozzles (2, 3) thus deviates from the blowing direction of the second main blowing nozzles (8, 9), which move back and forth with the sley (6).
  • the weft threads (10, 11) are introduced into a shed (15) formed by warp threads (14, 16).
  • the warp threads (14, 16) are raised or lowered by means of shed forming elements (17), for example by means of heald frames.
  • the insertion of the weft threads (10 or 11) takes place when the reed (7) is essentially in the rear position, which is shown in solid lines in FIGS. 1 and 2.
  • the weft threads (10 or 11) After the weft threads (10 or 11) have been introduced, they are beaten against the fabric edge of the fabric (18) by means of the reed (7), the sley (6) and the reed (7) being in the position shown in FIGS 2 position shown in dashed lines.
  • the two first main blowing nozzles (2, 3) are arranged at an angle to the second main blowing nozzles (8, 9), so that their blow-out direction essentially relates to the area of the so-called Rear compartment (19) are directed, ie to the area of the shed (15) which is on the side facing away from the stop side of the reed (7).
  • the stationary main blow nozzles (2, 3) from the weft threads (10, 11) detached dust or fiber fly into the rear compartment (19), is on the A weft thread feed side (30) of the rear compartment (19) has a shield (1) arranged.
  • the shield (1) consists of an air guiding means which covers the rear compartment (19) opposite the first main blowing nozzles (2, 3) and which is fastened to a holding bolt (24) of the weaving machine frame (22) by means of a fastening tab (21) is.
  • the air guiding means consists of a curved plate (20), in particular a sheet metal plate, which is concavely curved on the side facing the main blowing nozzles (2, 3), ie away from the rear compartment (19).
  • the axis of curvature runs essentially vertically, ie in the direction of movement of the shed forming elements (17).
  • the air-guiding means which is designed as a curved plate (20), extends from the rear position of the blade (6) and the reed (7) shown in solid lines against the running direction of the warp threads (14 , 16), ie away from the fabric (18).
  • Elements mounted on the sley (6), for example the weaving reed (7) and the second main blowing nozzles (8, 9) and the weft threads (10, 11) therefore do not come into contact with the air guide.
  • the height of the air guide means i.e. the plate (20), slightly larger than the maximum height of the shed (15) in the area of the rear compartment (19).
  • the shield (1) consists of two curved plates (20, 23) which are arranged approximately parallel to each other.
  • the somewhat narrower plate (23) is arranged on the side of the main blowing nozzles (2, 3) at a distance in front of the plate (20), so that in particular the air flow coming from the main blowing nozzle (3) between the two plates (20, 23) channeled and from the back compartment (19) is diverted.
  • the plate (23) is attached to the plate (20) with one or more brackets (25). 1 and 2, the plate (20) is in turn fastened to a holding bolt (24) by means of one or more holding webs (21), its height and angular position being fixed by means of one or more fixing screws (26) is determined.
  • the shield (1) consists of an air guide in the form of a plate (27) which is convexly curved towards the main blowing nozzles (2, 3) and which is not only located over the area of the rear compartment (19). , but also extends largely over the area of the front compartment, ie over the area of the compartment (15) in which the reed (7) moves.
  • the plate (27) is provided with a slot-shaped recess (28) in which the elements (main blowing nozzles (8, 9)) and the weft threads (10, 11) mounted on the sley can move without the plate (27 ) to touch.
  • the plate (27) can also be extended beyond the fabric edge of the fabric (18). In this case, a closed slot-shaped recess (28) is provided.
  • curved plates (20, 23, 27) are provided as air guiding means.
  • flat plates are provided as air guiding means. These flat plates can be arranged in a plan view corresponding to FIGS. 1 and 4 perpendicular to the plane extending to the drawing plane. However, they can also be arranged in a plane inclined to the vertical plane. Likewise, the plates can be arranged essentially transversely to the blowing directions of the main blowing nozzles (2, 3), or at an angle to this.
  • the area of the front compartment is less at risk with regard to deposits of dust and fiber fly, since there the main blowing nozzles (8, 9) and the one moving in this area Weave (7) largely prevent deposits. Nevertheless, it can be advantageous to shield the front compartment from the main blowing nozzles (2, 3).
  • an additional plate-shaped shield is provided in a further embodiment, which is attached to the sley (6) and which has only relatively small passage openings for the weft threads (10, 11).

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
  • Auxiliary Weaving Apparatuses, Weavers' Tools, And Shuttles (AREA)

Abstract

Dans un métier mécanique à buses à air qui comprend au moins deux buses principales (2, 8; 3, 9) disposées en ligne l'une derrière l'autre, il est prévu de monter, au moins dans la zone se trouvant devant la foule arrière (19), un écran (1) se présentant sous forme de plaque (20) et grâce auquel le flux d'air provenant de la buse principale (2, 3) et contenant de la poussière ou du duvet est dévié devant les fils de chaîne.
PCT/EP1996/001224 1995-03-28 1996-03-21 Metier mecanique a buses a air Ceased WO1996030574A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BE9500270A BE1009240A6 (nl) 1995-03-28 1995-03-28 Luchtweefmachine met een afscherming.
BE9500270 1995-03-28

Publications (1)

Publication Number Publication Date
WO1996030574A1 true WO1996030574A1 (fr) 1996-10-03

Family

ID=3888875

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1996/001224 Ceased WO1996030574A1 (fr) 1995-03-28 1996-03-21 Metier mecanique a buses a air

Country Status (2)

Country Link
BE (1) BE1009240A6 (fr)
WO (1) WO1996030574A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108526134A (zh) * 2018-04-18 2018-09-14 湖州新爱品纺织有限公司 一种纺织机除尘装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0137069A1 (fr) * 1983-10-11 1985-04-17 GebràœDer Sulzer Aktiengesellschaft Dispositif pour le nettoyage du côté insertion d'un métier à tisser
US4903739A (en) * 1987-05-12 1990-02-27 Picanol N.V. Method for threading a pick insertion device on weaving machines, and a device which uses this method
EP0393736A1 (fr) * 1989-04-19 1990-10-24 Picanol N.V. Méthode pour insérer des fils de trame dans la foule d'un métier à tisser et dispositif utilisant cette méthode

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0137069A1 (fr) * 1983-10-11 1985-04-17 GebràœDer Sulzer Aktiengesellschaft Dispositif pour le nettoyage du côté insertion d'un métier à tisser
US4903739A (en) * 1987-05-12 1990-02-27 Picanol N.V. Method for threading a pick insertion device on weaving machines, and a device which uses this method
EP0393736A1 (fr) * 1989-04-19 1990-10-24 Picanol N.V. Méthode pour insérer des fils de trame dans la foule d'un métier à tisser et dispositif utilisant cette méthode

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108526134A (zh) * 2018-04-18 2018-09-14 湖州新爱品纺织有限公司 一种纺织机除尘装置

Also Published As

Publication number Publication date
BE1009240A6 (nl) 1997-01-07

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