EP0112431A1 - Dispositif pour faire fonctionner un métier à jet d'air - Google Patents

Dispositif pour faire fonctionner un métier à jet d'air Download PDF

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Publication number
EP0112431A1
EP0112431A1 EP82810564A EP82810564A EP0112431A1 EP 0112431 A1 EP0112431 A1 EP 0112431A1 EP 82810564 A EP82810564 A EP 82810564A EP 82810564 A EP82810564 A EP 82810564A EP 0112431 A1 EP0112431 A1 EP 0112431A1
Authority
EP
European Patent Office
Prior art keywords
switched
field
auxiliary
time
nozzles
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
EP82810564A
Other languages
German (de)
English (en)
Other versions
EP0112431B1 (fr
Inventor
Hansueli Ing. Lerch
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
Sulzer AG
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 Sulzer AG, Gebrueder Sulzer AG filed Critical Sulzer AG
Priority to EP82810564A priority Critical patent/EP0112431B1/fr
Priority to DE8282810564T priority patent/DE3276123D1/de
Priority to US06/554,077 priority patent/US4532964A/en
Priority to BR8306717A priority patent/BR8306717A/pt
Priority to CS839803A priority patent/CS246070B2/cs
Priority to JP58242275A priority patent/JPS59130346A/ja
Publication of EP0112431A1 publication Critical patent/EP0112431A1/fr
Application granted granted Critical
Publication of EP0112431B1 publication Critical patent/EP0112431B1/fr
Expired 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
    • D03D47/3026—Air supply systems
    • D03D47/3033—Controlling the air supply
    • D03D47/304—Controlling of the air supply to the auxiliary nozzles

Definitions

  • the invention relates to a method for the operation of an air jet weaving machine with auxiliary nozzles distributed over the weaving width to form a pressure wave traveling through the shed with the tip of the weft thread to be inserted, auxiliary nozzles passed by the thread tip being switched off again before the end of the entry.
  • all the auxiliary nozzles that have passed will be switched off again before the end of the entry, with the exception of some auxiliary nozzles, in particular those that are closer to the start side of the weaving machine. The latter can only be activated for the first time towards the end of the entry.
  • the invention has for its object to provide an entry method with particularly low air or energy consumption.
  • the invention consists in that at least one passed auxiliary nozzle is switched on again at least one more time to support the weft thread before the end of the entry.
  • those auxiliary nozzles which are intended for supporting or feeding and stretching the weft thread in the shed only consume air and thus energy again only after a certain pause, during which they are switched off.
  • a wake-up wake field (wake-up pressure wave) following the thread tip traveling field generated first can be generated by means of a few, already passed auxiliary nozzles.
  • the traveling pressure wave at the thread tip can be kept shorter and the number of auxiliary nozzles that generate it can be kept correspondingly smaller.
  • the pressure of the trail hiking field can be lower than the pressure of the thread tip hiking field.
  • the pressure and thus the energy consumption in the thread tip traveling field can also be very generally lower when using a trailing traveling field than when no trailing traveling field is used.
  • a method is also known (DE-PS 23 28 135), in which auxiliary nozzles are also switched off after the thread tip has flown by.
  • those auxiliary nozzles which are intended to support the weft thread after the thread tip has flown by remain switched on continuously, that is to say from the time they are switched on when they pass the thread tip until the end of the entry.
  • a relatively large amount of air is used to support the thread.
  • the weaving machine designated as a whole by 31, contains two machine cheeks 32, 33.
  • a goods tree 34 and a reed 35 are arranged in between.
  • the weft 36 is drawn off from a fixed spool 37, passed through a weft brake 38 and blown in from a main entry nozzle 39 located outside the shed (weaving width W).
  • Auxiliary nozzles 1-24 are arranged over the weaving width W and project into the shed during the weft insertion.
  • a suction nozzle 42 is arranged on the catch side 41.
  • the nozzles 39, 1-24 are e.g. Valves 44 controlled by an electronic control device 43 are connected to an air distribution pipe 45, which is fed via an air supply line 46 from a compressed air container (air source) 47.
  • the container 47 is held under pressure by an air compressor, not shown.
  • the associated operating method of the weaving machine 31 shown in FIG. 2 proceeds as follows.
  • the angular degrees of the main shaft of approximately 100-280 ° are plotted on the abscissa of FIG. 2, and the blowing duration Z is plotted on the ordinate. (Instead of the degrees of angle, the length specifications corresponding to the weaving width could also be plotted on the abscissa.)
  • the entry of the weft thread 36 begins with the opening of the valves 44 belonging to the nozzles 39, 1-4 (first auxiliary nozzle group A) and the simultaneous opening of the weft thread brake (38) at the time O.
  • the auxiliary nozzles 5-8 forming the second auxiliary nozzle group B are switched on.
  • group A is switched off at time b.
  • Group B now takes over the thread tip 48, while nozzle 39 continues to blow.
  • the instantaneous position of the weft thread 36 shown in FIG. 1 results, in which the thread tip 48 is between the auxiliary nozzles 8 and 9.
  • group B is switched off.
  • the thread is carried on by group C until time e.
  • Group e (auxiliary nozzles 13 - 16) is switched on at e
  • group C is switched off at time f.
  • group D Shortly after time f - while group D continues to transport the thread tip 48 - at time g group A is switched on again to support the rear weft piece. Subsequently, at time h, group E, comprising auxiliary nozzles 17-20, is switched on and shortly thereafter, at time i, group A of the auxiliary nozzles now functioning as support nozzles is switched off again. At the same time, group B is now switched on for its second time as a support nozzle. At time k, group D is switched off. At this time, the thread 36 at its tip 48 is transported further by the auxiliary nozzles 17-20 (group E) working as traction nozzles and by the group B switched on for the second time in the rear weft piece.
  • group B is finally switched off for the second time and group C is switched on for the second time, so that the auxiliary nozzles 9-12 now function as a support carry the rear weft piece further.
  • group F comprising nozzles 21-24 is switched on.
  • group n is switched off for n.
  • group C is switched off for the second time at p
  • group D is switched on for the second time.
  • group E is switched on for the second time.
  • Groups F and E are finally switched off at time r.
  • the thread tip 48 is in the area of the suction nozzle 42 which has meanwhile been switched on, and the weft insertion has ended.
  • the nozzle groups A - F form a first traveling field (Fadenspitze-Wanderfeld) G running with the thread tip 48 through the compartment, whereby they work as traction nozzles.
  • Groups A - E are then switched off in order to be switched on successively a second time after a certain break.
  • E a the thread tips - -
  • the Group A traveling wave form G trailing traveling wave H, where they work as a supporting nozzles.
  • the blowing time in the thread tip traveling field G lasts from the time 0 to b or a - d etc. and is the same length in all groups A - F
  • the blowing time in the wake traveling field H for group A is g - i.
  • the blowing duration g - i is shorter than the main blowing duration O - b in the field G. Furthermore, the blowing duration of the individual groups in the lagging field H gradually decreases. For example, the blowing time i - p from group C is shorter than the blowing time i - from group B. The blowing time q - r is again shorter than the previous blowing time p - q.
  • the thread tip traveling field G runs in the same way as according to FIG. 2, however the trailing traveling field J starts later than the field H according to FIG. 2.
  • the nozzle groups A - E blow in the trailing traveling field until the end of the entry at r.
  • the blowing duration s - r of group A in the trailing field J is longer than the duration O - b of the same group A in the leading field G.
  • the blowing duration in the trailing field J also decreases successively with a moving thread tip 48.
  • all groups A - E begin in the trailing field K at the same time t and blow until the end of the entry at r.
  • the blowing time t - r is shorter than the initial blowing time s - r in field J according to FIG. 3.
  • a first trail hiking field K and a subsequent, second trail hiking field L are used for groups A-e.
  • the field K progressively corresponds to field H according to FIG. 2, but ends at u and thus before the end of the entry at r.
  • the trailing field L largely corresponds to the field J according to FIG. 3.
  • Field L only begins at a somewhat later point in time v, but here, as with J, all groups A - E blow until the end of entry r.
  • the two wake fields M, N largely correspond to the wake fields K, L according to Fig. 5. Only the blowing time of groups A - E is kept longer in field M than for K according to Fig. 5. In addition, group E blows in Field M until end of entry r. so that the end of group D, which is switched on for the second time, in field N forms the end of second trailing field N.
  • a first wake-up traveling field S by means of the nozzles 5, 9, 13, 17 corresponds to the field R according to FIG. 9 and also a second wake-up traveling field T corresponding to the field Q according to FIG. 8 used. Only the blowing time in fields S, T is shorter than in fields R, Q.
  • the pressure maintained in the containers 45, 47 can be kept lower when using trailing moving fields according to FIGS. 2-10 than when using only a single thread tip moving field G according to FIG. 11.
  • the individual ones used to form a trailing moving field Auxiliary nozzle groups can, for example also include two or three auxiliary nozzles.
  • a passed auxiliary nozzle is generally not switched off itself immediately after the thread tip 48 flies by, but only after a certain initial region of the weft thread has moved past the nozzle.
  • the term "thread tip" used several times in the preceding is to be understood to mean that in each case a certain initial region of the weft thread that follows the actual tip is meant.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
EP82810564A 1982-12-24 1982-12-24 Dispositif pour faire fonctionner un métier à jet d'air Expired EP0112431B1 (fr)

Priority Applications (6)

Application Number Priority Date Filing Date Title
EP82810564A EP0112431B1 (fr) 1982-12-24 1982-12-24 Dispositif pour faire fonctionner un métier à jet d'air
DE8282810564T DE3276123D1 (en) 1982-12-24 1982-12-24 Device for operating an air jet loom
US06/554,077 US4532964A (en) 1982-12-24 1983-11-21 Method of operating an air nozzle weaving machine
BR8306717A BR8306717A (pt) 1982-12-24 1983-12-07 Processo para a operacao de um tear a jato de ar
CS839803A CS246070B2 (en) 1982-12-24 1983-12-22 Method of weft thread insertion into fabric by means of air jet
JP58242275A JPS59130346A (ja) 1982-12-24 1983-12-23 空気ノズル織機の運転方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP82810564A EP0112431B1 (fr) 1982-12-24 1982-12-24 Dispositif pour faire fonctionner un métier à jet d'air

Publications (2)

Publication Number Publication Date
EP0112431A1 true EP0112431A1 (fr) 1984-07-04
EP0112431B1 EP0112431B1 (fr) 1987-04-22

Family

ID=8190095

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82810564A Expired EP0112431B1 (fr) 1982-12-24 1982-12-24 Dispositif pour faire fonctionner un métier à jet d'air

Country Status (6)

Country Link
US (1) US4532964A (fr)
EP (1) EP0112431B1 (fr)
JP (1) JPS59130346A (fr)
BR (1) BR8306717A (fr)
CS (1) CS246070B2 (fr)
DE (1) DE3276123D1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4703779A (en) * 1985-08-30 1987-11-03 N.V. Weefautomaten Picanol Control valve for auxiliary nozzle of air jet looms
EP0570701A1 (fr) * 1992-05-21 1993-11-24 Lindauer Dornier Gesellschaft M.B.H Méthode d'insertion pneumatique de fil de trame dans un métier à tisser à air

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL8600713A (nl) * 1986-03-20 1987-10-16 Picanol Nv Werkwijze voor de sturing van bijblazers bij het inbrengen van een inslagdraad, bij weefmachines; en inrichting hiertoe aangewend.
DE4131474C2 (de) * 1991-09-21 1995-01-05 Dornier Gmbh Lindauer Verfahren zum Schußfadeneintrag auf einer Luftdüsenwebmaschine
CN104790099B (zh) * 2015-04-28 2016-05-11 宁波市东盛纺织有限公司 一种具有导气杆的喷气织机
CN104790101B (zh) * 2015-04-28 2016-08-24 宁波市东盛纺织有限公司 一种宽幅喷气织机
CN104790100B (zh) * 2015-04-28 2016-05-11 宁波市东盛纺织有限公司 一种喷气织机
JP6558348B2 (ja) * 2016-11-18 2019-08-14 株式会社豊田自動織機 エアジェット織機における緯糸飛走状態検知装置

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2328135A1 (de) * 1973-06-02 1974-12-19 Scheffel Walter Verfahren und vorrichtung an webmaschinen, bei denen die schussfaeden durch ein fluidum ins webfach eingetragen werden
DE2051445B2 (fr) * 1969-10-22 1975-04-03 N.V. Machinefabriek L. Te Strake, Deurne (Niederlande)
FR2314281A1 (fr) * 1975-06-10 1977-01-07 Vyzk Vyvojovy Ustav Zavodu Installation pour la commande d'organes actifs de canal d'introduction de trame dans un metier a buses d'injection
FR2433066A1 (fr) * 1978-08-09 1980-03-07 Sulzer Ag Dispositif electronique de commande d'une machine a tisser
US4245677A (en) * 1978-02-10 1981-01-20 Kabushiki Kaisha Toyoda Jidoshokki Seisakusho Method and apparatus for supplying transport fluid to auxiliary jet nozzles in a jet loom
US4262707A (en) * 1978-02-10 1981-04-21 Kabushiki Kaisha Toyoda Jidoshokki Seisakusho Method for injecting transport fluid into a shed from auxiliary jet nozzles
DE3047941A1 (de) * 1980-12-17 1982-07-01 Sulzer Ag "verfahren zum betrieb einer webmaschine"

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5691038A (en) * 1979-12-26 1981-07-23 Nissan Motor Wefting method of air jet type loom
JPS5876551A (ja) * 1981-10-29 1983-05-09 津田駒工業株式会社 空気噴射式無杼織機の補助ノズル噴射方法

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2051445B2 (fr) * 1969-10-22 1975-04-03 N.V. Machinefabriek L. Te Strake, Deurne (Niederlande)
DE2328135A1 (de) * 1973-06-02 1974-12-19 Scheffel Walter Verfahren und vorrichtung an webmaschinen, bei denen die schussfaeden durch ein fluidum ins webfach eingetragen werden
FR2314281A1 (fr) * 1975-06-10 1977-01-07 Vyzk Vyvojovy Ustav Zavodu Installation pour la commande d'organes actifs de canal d'introduction de trame dans un metier a buses d'injection
US4245677A (en) * 1978-02-10 1981-01-20 Kabushiki Kaisha Toyoda Jidoshokki Seisakusho Method and apparatus for supplying transport fluid to auxiliary jet nozzles in a jet loom
US4262707A (en) * 1978-02-10 1981-04-21 Kabushiki Kaisha Toyoda Jidoshokki Seisakusho Method for injecting transport fluid into a shed from auxiliary jet nozzles
FR2433066A1 (fr) * 1978-08-09 1980-03-07 Sulzer Ag Dispositif electronique de commande d'une machine a tisser
DE3047941A1 (de) * 1980-12-17 1982-07-01 Sulzer Ag "verfahren zum betrieb einer webmaschine"

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4703779A (en) * 1985-08-30 1987-11-03 N.V. Weefautomaten Picanol Control valve for auxiliary nozzle of air jet looms
EP0570701A1 (fr) * 1992-05-21 1993-11-24 Lindauer Dornier Gesellschaft M.B.H Méthode d'insertion pneumatique de fil de trame dans un métier à tisser à air
DE4216749C1 (de) * 1992-05-21 1994-01-05 Dornier Gmbh Lindauer Verfahren zum pneumatischen Schußfadeneintrag auf Luftdüsenwebmaschinen
US5345976A (en) * 1992-05-21 1994-09-13 Lindauer Dornier Gmbh Method for a pneumatic weft thread insertion in an air nozzle weaving loom

Also Published As

Publication number Publication date
JPH0321654B2 (fr) 1991-03-25
DE3276123D1 (en) 1987-05-27
BR8306717A (pt) 1984-07-31
US4532964A (en) 1985-08-06
EP0112431B1 (fr) 1987-04-22
JPS59130346A (ja) 1984-07-26
CS246070B2 (en) 1986-10-16

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