EP1279757A1 - Dispositif de battant - Google Patents

Dispositif de battant Download PDF

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Publication number
EP1279757A1
EP1279757A1 EP02405524A EP02405524A EP1279757A1 EP 1279757 A1 EP1279757 A1 EP 1279757A1 EP 02405524 A EP02405524 A EP 02405524A EP 02405524 A EP02405524 A EP 02405524A EP 1279757 A1 EP1279757 A1 EP 1279757A1
Authority
EP
European Patent Office
Prior art keywords
nozzle
main
profile part
profile
weaving
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.)
Withdrawn
Application number
EP02405524A
Other languages
German (de)
English (en)
Inventor
Hans-Dieter Dr. Scorl
Heinz Baumann
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.)
Itema Switzerland Ltd
Original Assignee
Sulzer Textil AG
Sultex AG
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 Sulzer Textil AG, Sultex AG filed Critical Sulzer Textil AG
Priority to EP02405524A priority Critical patent/EP1279757A1/fr
Publication of EP1279757A1 publication Critical patent/EP1279757A1/fr
Withdrawn legal-status Critical Current

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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
    • D03D49/60—Construction or operation of slay
    • 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

Definitions

  • the invention relates to a weaving device according to the preamble of independent claim 1.
  • Jet looms are distinguished in particular by the fact that the insertion of a weft thread into a shed is accomplished with the aid of a flowing fluid, such as in the case of air jet looms with the aid of compressed air.
  • a weaving shop device comprises a shop profile, a reed and a drive, the shop profile carrying the reed and at least one device referred to as the main nozzle and the shop profile being operatively connected to the drive.
  • the weft thread is drawn from a thread supply, which can be configured, for example, in the form of a drum store, and accelerated for entry into the shed by means of the main nozzle fed by the flowing fluid.
  • additional air nozzles are attached to the shop profile at certain intervals, which support the progressive entry of the weft thread into the shed.
  • the main nozzle is in a rotationally fixed connection with the shutter profile so that the progressive weft insertion along the relay nozzles through the shed is not impaired by the pendulum-like movements of the shed device.
  • the weft thread is stretched until it arrives after the arrival.
  • tandem nozzle in addition to the main nozzle mentioned above for the weft insertion.
  • the tandem nozzle is connected in series to the main nozzle.
  • This arrangement corresponds essentially to two main nozzles placed one behind the other, with the aim of achieving the introduction of force for thread transport by increasing the thread surface exposed to the air.
  • the tandem nozzle primarily takes over the unwinding of the weft thread from the drum storage, whereby the unwinding resistance is compensated for. This allows the pressure to be reduced at the main nozzle, which results in a more gentle weft insertion.
  • the weft insertion speed or weft insertion time can be changed so that, depending on the weft material to be inserted and the weft thread length or the fabric feed width, a maximum weft meter output can be achieved with the highest demands on the fabric quality.
  • FIGS. 1 to 3 The prior art for the arrangement of the main nozzle and tandem nozzle on the store profile will be explained in more detail below with reference to FIGS. 1 to 3 using a few examples. To distinguish the prior art from the weaving device according to the invention, the reference numerals in FIGS. 1 to 3 are provided with a quotation mark.
  • Fig. 1 shows a tandem nozzle 8 ', which is stationary connected to a holding profile part 5'.
  • the holding profile part 5 ' is in turn firmly connected to the frame 5 "of the weaving machine. Since in operation the shutter profile 1' with reed 2 'and main nozzle 6' executes pendulum movements for the purpose of striking the weft thread about the axis of the drive shaft 3 ' inevitably between the stationary tandem nozzle 8 'and the thread deflection points with corresponding friction, which are undesirable with the drawer with the moving main nozzle 6'.
  • the pre-nozzle according to FIG. 2 can also be mounted on the shutter profile 1 '. Then, however, the store profile must be longer. Additional thread deflection points between the tandem nozzle 8 'and the main nozzle 6' are thus avoided because the tandem nozzle 8 'is now also moved synchronously in a rotationally fixed connection with the main nozzle 6'.
  • the pendulum-like movement of the shop profile during the weaving process results in enormous additional acceleration forces which, if they should not exceed certain limit values, may make it necessary to reduce the engine speed and / or due to the additional forces that occur, for example in the form of bearing forces premature wear of corresponding machine components.
  • the weft insertion rate is reduced and, on the other hand, maintenance intervals are shortened and the service life of mechanically stressed machine components is significantly reduced, which at least impairs the economical operation of the weaving machine.
  • additional yarn guide elements 9 'must be used to guide the weft yarn in order to prevent the weft yarn from colliding with the shop profile (see FIG. 3). This results in additional undesirable thread deflection points with the corresponding negative friction effects.
  • the object of the invention is therefore to propose an improved weaving device for weaving machines which alternatively allows the optimal use of either a main nozzle alone or a main nozzle in combination with a further tandem nozzle which is designed as a pre-nozzle.
  • the problems known from the prior art should be avoided in order to arrive at an overall technically and economically more advantageous solution.
  • the weaving shop device solving this object is characterized by the features of independent claim 1.
  • the weaving device for a weaving machine comprises a shop profile, a reed and a drive, the shop profile carrying the reed and being operatively connected to the drive.
  • the store profile comprises at least two separate parts, namely a main profile part and an auxiliary profile part, the auxiliary profile part being directly or indirectly detachably connected to the main profile part.
  • the step from the single-nozzle variant to the combination of a main nozzle with a tandem nozzle as a pre-nozzle takes place as required, for example if, due to a larger weaving width or due to a certain type of yarn at a given machine speed, only insufficient compressed air output can be applied for a perfect weft insertion. Especially when processing low-tensile yarns, only a limited pressure level is possible, which is why two consecutive nozzles are not only advantageous, but absolutely necessary for gentle yarn loading.
  • the weaving shop device remedies the previously described deficiencies of the current state of the art, in that the shop profile comprises two separate parts, namely a main profile part and an auxiliary profile part, which are directly or indirectly detachably connected to one another.
  • the shop profile comprises two separate parts, namely a main profile part and an auxiliary profile part, which are directly or indirectly detachably connected to one another.
  • the auxiliary profile part carrying it can also be dismantled in addition to the tandem nozzle, so that no unnecessary masses of an unused area of the shop profile have to be moved.
  • the shop profile 1 shown comprises a main profile part 4, which is non-rotatably connected to the drive 3, and both the main nozzle 6, which serves to accelerate a weft thread 7 by means of a fluid, as well as a reed 2 carries and an auxiliary profile part 5, which is both with a drive 3, as well as with the main profile part 4 in a direct rotationally fixed connection.
  • the auxiliary profile part 5 does not necessarily have to be in direct connection with the main profile part 4 and the drive 3 at the same time.
  • auxiliary profile part 5 is screwed directly onto the main profile part 4.
  • other forms of connection are also suitable.
  • the preferred exemplary embodiment shown schematically in FIG. 4 shows a typical arrangement in practice with a tandem nozzle and main nozzle, as used in jet weaving machines, preferably in air jet weaving machines.
  • the preferred exemplary embodiment shown does not relate exclusively to jet weaving machines which use a gaseous medium as the fluid for accelerating the weft thread.
  • Liquid media such as water, can also be considered as a fluid.
  • tandem nozzle 8 which works as a pre-nozzle, can no longer be arranged on the main profile part 4 in addition to the main nozzle 6.
  • the tandem nozzle 8 is placed on a separate one in the inventive weaving device Auxiliary profile part 5 mounted.
  • the tandem nozzle 8 can be arranged in alignment on the auxiliary profile part 5 and in series in front of the main nozzle 6, which is placed on the main profile part 4, with a rotationally fixed connection between the main profile part 4 and the auxiliary profile part 5 can be produced. This avoids additional thread deflection points between the tandem nozzle 8 and the main nozzle 6, because the tandem nozzle 8 is now moved synchronously in a rotationally fixed connection with the main nozzle 6. If the tandem nozzle 8 is no longer required in another operating mode, it can be removed together with the entire auxiliary profile part 5, and the weaving device 10 only works with one main nozzle 6, which is seated on the main profile part 4. The additional mass of the auxiliary profit part 5 no longer has to be moved.
  • auxiliary profile part 5 does not necessarily have to be in a rotationally fixed connection with the main profile part 4 and the drive 3.
  • Fig. 5 shows a variant in which the auxiliary profile part 5 is only in direct rotation-proof connection with the main profile part 4.
  • 6 shows a further alternative in that the auxiliary profile part 5 is connected in a rotationally fixed manner directly to the drive 3, but only indirectly, namely via the drive 3, to the main profile part 4.
  • the tandem nozzle 8 and the main nozzle 6 need not necessarily be aligned in the weft insertion direction I-I.
  • the tandem nozzle 8 can be suitably oriented in any direction with respect to the main nozzle 6.
  • FIG. 8 schematically shows an arrangement in which the tandem nozzle 8 and main nozzle 6 are not aligned.
  • the main nozzle 6 and the tandem nozzle 8 can both be placed on the main profile part 4.
  • the auxiliary profile part 5 can also be dismantled in the case of the weaving device according to the invention, so that the additional mass of the auxiliary profile part 5 no longer has to be moved.
  • the main profile part 4 in the inventive weaving device can be easily extended by the auxiliary profile part 5, the auxiliary profile part 5, as shown in FIG. 7, for example, directly with the main profile part 4 can be connected.
  • a non-rotatable connection between the auxiliary profile part 5 and the main profile part 4 can also be produced in a different way than shown in FIG. 7.
EP02405524A 2001-07-23 2002-06-24 Dispositif de battant Withdrawn EP1279757A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP02405524A EP1279757A1 (fr) 2001-07-23 2002-06-24 Dispositif de battant

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP01810728 2001-07-23
EP01810728 2001-07-23
EP02405524A EP1279757A1 (fr) 2001-07-23 2002-06-24 Dispositif de battant

Publications (1)

Publication Number Publication Date
EP1279757A1 true EP1279757A1 (fr) 2003-01-29

Family

ID=26077407

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02405524A Withdrawn EP1279757A1 (fr) 2001-07-23 2002-06-24 Dispositif de battant

Country Status (1)

Country Link
EP (1) EP1279757A1 (fr)

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE439949A (fr) *
BE704022A (fr) * 1967-09-19 1968-02-01
US3677306A (en) * 1969-10-01 1972-07-18 Northrop Weaving Machinery Ltd Loom sleys
JPS5590646A (en) 1978-12-25 1980-07-09 Nissan Motor Weft inserting apparatus for fluid injection type loom
JPS5865039A (ja) 1981-10-12 1983-04-18 日産自動車株式会社 空気噴射式織機の緯入れノズル
EP0162175A1 (fr) 1984-05-21 1985-11-27 GebràœDer Sulzer Aktiengesellschaft Dispositif d'introduction du fil de trame dans les métiers à jet d'air
EP0340528A1 (fr) 1988-05-04 1989-11-08 Lindauer Dornier Gesellschaft M.B.H Tuyère principale pivotante pour machines à tisser
EP0342135A1 (fr) * 1988-05-10 1989-11-15 S.A. Saurer Diederichs Dispositif d'aspiration et de retenue du fil de trame, pour machine à tisser avec insertion de trame pneumatique
JPH09228193A (ja) * 1996-02-27 1997-09-02 Toyota Autom Loom Works Ltd ジェットルームにおける緯入れ装置
JP2001032148A (ja) * 1997-08-05 2001-02-06 Tsudakoma Corp 流体噴射式織機の緯入れノズル選択装置

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE439949A (fr) *
BE704022A (fr) * 1967-09-19 1968-02-01
US3677306A (en) * 1969-10-01 1972-07-18 Northrop Weaving Machinery Ltd Loom sleys
JPS5590646A (en) 1978-12-25 1980-07-09 Nissan Motor Weft inserting apparatus for fluid injection type loom
JPS5865039A (ja) 1981-10-12 1983-04-18 日産自動車株式会社 空気噴射式織機の緯入れノズル
EP0162175A1 (fr) 1984-05-21 1985-11-27 GebràœDer Sulzer Aktiengesellschaft Dispositif d'introduction du fil de trame dans les métiers à jet d'air
EP0340528A1 (fr) 1988-05-04 1989-11-08 Lindauer Dornier Gesellschaft M.B.H Tuyère principale pivotante pour machines à tisser
US4962795A (en) * 1988-05-04 1990-10-16 Lindauer Dornier Gesellschaft M.B.H. Spring mounting for the weft thread inlet end of the main nozzle of an air jet loom
EP0342135A1 (fr) * 1988-05-10 1989-11-15 S.A. Saurer Diederichs Dispositif d'aspiration et de retenue du fil de trame, pour machine à tisser avec insertion de trame pneumatique
JPH09228193A (ja) * 1996-02-27 1997-09-02 Toyota Autom Loom Works Ltd ジェットルームにおける緯入れ装置
JP2001032148A (ja) * 1997-08-05 2001-02-06 Tsudakoma Corp 流体噴射式織機の緯入れノズル選択装置

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 1998, no. 01 30 January 1998 (1998-01-30) *
PATENT ABSTRACTS OF JAPAN vol. 2000, no. 19 5 June 2001 (2001-06-05) *

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