EP0229588B1 - Luftstrahlwebmaschine - Google Patents

Luftstrahlwebmaschine Download PDF

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Publication number
EP0229588B1
EP0229588B1 EP86810448A EP86810448A EP0229588B1 EP 0229588 B1 EP0229588 B1 EP 0229588B1 EP 86810448 A EP86810448 A EP 86810448A EP 86810448 A EP86810448 A EP 86810448A EP 0229588 B1 EP0229588 B1 EP 0229588B1
Authority
EP
European Patent Office
Prior art keywords
nozzle
weft
picking
disposed
jet
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
EP86810448A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0229588A1 (de
Inventor
Hubert Peter Van Mullekom
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.)
Sulzer AG
Original Assignee
Gebrueder Sulzer 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 Gebrueder Sulzer AG filed Critical Gebrueder Sulzer AG
Publication of EP0229588A1 publication Critical patent/EP0229588A1/de
Application granted granted Critical
Publication of EP0229588B1 publication Critical patent/EP0229588B1/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
    • D03D47/28—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
    • D03D47/3066—Control or handling of the weft at or after arrival
    • D03D47/3086—Weft removal
    • 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
    • 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
    • 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
    • D03D49/70—Devices for cutting weft threads

Definitions

  • the invention relates to an air jet weaving machine with a weft insertion nozzle arranged outside the shed and a weft deflecting device arranged between it and the shed for keeping the weft away from the shed after a signal for stopping the loom as a result of a fault, the weft deflecting device having a blowing nozzle lying transversely to the weft direction and one contains suction nozzle located essentially in the extension of the blowing nozzle.
  • such a weft deflection device which is permanently installed in the reed of the weaving machine, the outlet mouth of the blowing nozzle and the inlet opening of the suction nozzle being in the guide channel of the weft thread.
  • the blowing nozzle or suction nozzle are located in a shaped piece, the side crack of which is aligned with the individual reed blades in the weft insertion direction.
  • Such a weft deflection device requires a relatively large amount of space between the weft insertion nozzle and the shed formed by the warp threads, which can only begin with the first reed lamella of the sley.
  • the weft insertion nozzle is pivoted from the normal position into an obliquely upward position in front of the inlet mouth of a suction device, so that the weft thread away from the weft channel into the suction device is directed.
  • a thread guide is attached to the scissors for cutting off the weft thread, which thread guide is also intended to guide the thread into the area between the scissor wings when it has been derived from the suction device.
  • the weft deflecting device mentioned has the disadvantage that the insertion nozzle must be provided with a drive mechanism and be articulated.
  • the present invention has for its object to provide an air weaving machine with an improved weft deflection device, which is carried out as space-saving as possible and no additional movement of the elements involved necessary to initiate the deflection process is necessary.
  • the invention consists in that, seen from the weft insertion nozzle, a thread guide is arranged transversely next to the free jet in front of the crossing point between the free jet from the weft insertion nozzle and the jet from the blowing nozzle, and that the thread guide is seen from the blowing nozzle after the crossing point between free jet and Jet from the blow nozzle is also transverse to the jet from the blow nozzle.
  • This arrangement makes it possible to arrange the outlet mouth of the blowing nozzle and the inlet mouth of the suction nozzle, which can be designed as a funnel, farther than in the prior art from the weft insertion nozzle, in a direction transverse to the weft insertion direction, on the other hand closer to Arrange the weft direction at the outlet mouth of the weft insertion nozzle, so that less space is required in the weft direction by the weft deflection device than according to the European patent application No. 0 150 763 mentioned at the beginning.
  • the thread guide must extend at least over a length which corresponds to the range of movement of the weft insertion nozzle transversely to the weft insertion direction, the thread guide lying in the direction of movement of the weft insertion nozzle.
  • the end of the thread guide facing the reed lies in the weft insertion direction in front of the plane in which the mouth of the insertion nozzle moves. Its other end lies behind the plane in which the scissors move during cutting so that the weft thread is safely inserted into the scissors.
  • the thread guide can be an extension of one of the scissor wings. However, it is also possible, for example, for the lower thread cutting edge to be exchangeably attached to the thread guide.
  • the blowing nozzle of the weft deflecting device is arranged above the weft insertion nozzle in the insertion direction after its mouth, acting vertically downwards, and the funnel for catching the weft thread lies underneath within the weaving loom of the weaving machine.
  • the device described is characterized by a small footprint and simple construction.
  • the weft thread 5 is drawn off from the weft thread bobbin 50 and blown along the reed 1 by means of the insertion nozzle 61.
  • the warp threads run from the warp beam 16 over the shafts 17 through the reed 1 and, after the weft thread 5 has been inserted and struck, are wound onto the fabric beam 18 as a fabric 19.
  • the inlet nozzle 61 and the blowing nozzle 7 are fastened to the housing 30, while a suction funnel sits on the reed profile 2 below the blowing nozzle 7.
  • the weft thread is blown through the entry nozzle 61 or 62 into the guide channel 12 according to FIG. 2 within the shed 15.
  • the guide channel 12 is formed by the reed 1 as shown in FIG. 1.
  • the guide channel 12 is located in the shed 15 formed by the warp threads 13 and 14 stretched over the weaving width.
  • the reed 1 is fastened in the reed profile 2, which is connected to the shaft 4 via several levers 3.
  • the whole arrangement between reed 1 and shaft 4 is referred to as a sley 10.
  • the sley moves together with the insertion nozzles 61 and 62 according to the rotation of the shaft 4 in the direction of the arrow 41. At the end of this movement, the entry nozzles are in the position 61 'or 62' behind the scissors 8 in FIG. 1, where the weft thread is cut off.
  • the sley then swings back against arrow 41. If the weaving machine is automatically stopped as a result of a fault, a weft thread that has already been prepared for the entry should no longer reach the area of the shed 15. It is then discharged through the blowing nozzle 7 past the thread guide 90 into the funnel 23 and into the transport line 22 within the reed profile 2.
  • the weft deflecting device thus consists of a blowing nozzle 7 above the outlet opening of the entry nozzle 61 and 62, the thread guide 90 and the funnel 23, which sits in the reed profile by means of an end piece 24. A negative pressure prevails in the funnel 23 and in the transport line 22 so that the weft thread 5 can be sucked off.
  • the weft thread 5 is deflected downward by the air flow from the blowing nozzle 7 and thus plunges directly into the funnel 23.
  • the end of the thread guide 90 is located below the entry nozzles 61 and 62 to the left of the outlet openings from these nozzles Fig. 2.
  • the main nozzles move in the direction of the position 61 'or 62' in the area of the scissors 8.
  • the weft glides over the edge curved slightly downward to the right in Fig. 2 along the dash-dotted line 91 between the Scissor blades 81 or 82.
  • the scissor blade 83 is attached to the latter in an exchangeable manner.
  • the funnel 23 at the beginning of the transport line 22 is then, according to FIG. 1, below the scissors 8 in position 23 '.
  • the deflection process is ended.
  • FIG. 3 shows, on a smaller scale than FIG. 2, a section along line 111-111 of this figure, an intermediate position during the deflection process, in which the weft thread is located just above the cutting plane 111-111 in FIG. 2.
  • the thread guide 90, the lower scissor wing 82 and the fastening flange 84 are integrated in a single element which also carries the upper scissor wing 81 by means of the axis 86.
  • the flange 84 is screwed to a housing 30.
  • the upper scissor blade moves according to arrow 87 about the axis 86 and slides over the scissor blade 83 on the lower scissor blade 81.
  • the thread guide 90 can also be attached to the housing 30 without a direct connection to the lower scissor wing 82, if it is designed such that the weft thread is tensioned at the end of the deflection process by means of the insertion nozzle 61 or 62 through the free space between the scissor wings 81 and 82 is.
  • the thread guide 90 can also be used in air-jet weaving machines which have only one pair of scissors 61 or more than two pair of scissors 61, 62.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
EP86810448A 1985-12-20 1986-10-09 Luftstrahlwebmaschine Expired - Lifetime EP0229588B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH5455/85 1985-12-20
CH545585 1985-12-20

Publications (2)

Publication Number Publication Date
EP0229588A1 EP0229588A1 (de) 1987-07-22
EP0229588B1 true EP0229588B1 (de) 1990-07-25

Family

ID=4293883

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86810448A Expired - Lifetime EP0229588B1 (de) 1985-12-20 1986-10-09 Luftstrahlwebmaschine

Country Status (4)

Country Link
US (1) US4784188A (it)
EP (1) EP0229588B1 (it)
JP (1) JPS62156340A (it)
DE (1) DE3672990D1 (it)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH073022B2 (ja) * 1987-09-19 1995-01-18 株式会社豊田自動織機製作所 織機における不良緯糸処理装置
DE3740666C1 (de) * 1987-12-01 1989-03-02 Dornier Gmbh Lindauer Schusseintragvorrichtung fuer pneumatische Webmaschinen mit wenigstens zwei zu einem Buendel zusammengefassten Blasduesen
DE4000856A1 (de) * 1990-01-13 1991-07-18 Dornier Gmbh Lindauer Schussseitig angeordnete fadenschneidevorrichtung einer luftwebmaschine
JP2003342857A (ja) * 2002-05-28 2003-12-03 Tsudakoma Corp 織機における緯糸処理方法
EP2050847B1 (de) * 2007-10-19 2012-08-29 Siemens Aktiengesellschaft Verfahren zum Transport eines Schussfadens durch das Webfach einer Webmaschine

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2497240A1 (fr) * 1980-12-30 1982-07-02 Saurer Diederichs Sa Dispositif a buse mobile pour insertion pneumatique de la trame sur une machine a tisser sans navette
CS230360B1 (en) * 1981-03-02 1984-08-13 Jiri Novak Weaving machine
KR860002101B1 (ko) * 1982-05-11 1986-11-25 가부시기 가이샤 도요다 지도우 쇽기세이사꾸쇼 젯트직기에 있어서 위사처리방법 및 그 장치
US4502512A (en) * 1982-07-21 1985-03-05 Seisakusho Kabushiki Kaisha Toyoda Jidoshokki Method for treating a weft yarn upon stoppage of a shuttleless loom and device for effecting the same
US4531555A (en) * 1983-01-19 1985-07-30 Toray Industries, Inc. Yarn cutter for shuttleless loom
EP0150763A3 (en) * 1983-12-28 1989-04-12 Nissan Motor Co., Ltd. Loom
EP0161376A1 (de) * 1984-05-18 1985-11-21 GebràœDer Sulzer Aktiengesellschaft Luftstrahlwebmaschine
GB8529809D0 (en) * 1985-12-04 1986-01-15 Dermalex Co Ltd Air supply & control apparatus

Also Published As

Publication number Publication date
US4784188A (en) 1988-11-15
DE3672990D1 (de) 1990-08-30
EP0229588A1 (de) 1987-07-22
JPH0310747B2 (it) 1991-02-14
JPS62156340A (ja) 1987-07-11

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