EP0446625B1 - Dispositif d'enfilage et de changement de fils pour guide-fils - Google Patents

Dispositif d'enfilage et de changement de fils pour guide-fils Download PDF

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Publication number
EP0446625B1
EP0446625B1 EP91101876A EP91101876A EP0446625B1 EP 0446625 B1 EP0446625 B1 EP 0446625B1 EP 91101876 A EP91101876 A EP 91101876A EP 91101876 A EP91101876 A EP 91101876A EP 0446625 B1 EP0446625 B1 EP 0446625B1
Authority
EP
European Patent Office
Prior art keywords
thread
guide
threads
metering part
presenter
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
EP91101876A
Other languages
German (de)
English (en)
Other versions
EP0446625A1 (fr
Inventor
Franz Schmid
Fritz Walker
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.)
H Stoll GmbH and Co KG
Original Assignee
H Stoll GmbH and Co KG
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 H Stoll GmbH and Co KG filed Critical H Stoll GmbH and Co KG
Publication of EP0446625A1 publication Critical patent/EP0446625A1/fr
Application granted granted Critical
Publication of EP0446625B1 publication Critical patent/EP0446625B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B15/00—Details of, or auxiliary devices incorporated in, weft knitting machines, restricted to machines of this kind
    • D04B15/38—Devices for supplying, feeding, or guiding threads to needles
    • D04B15/54—Thread guides
    • D04B15/56—Thread guides for flat-bed knitting machines
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B15/00—Details of, or auxiliary devices incorporated in, weft knitting machines, restricted to machines of this kind
    • D04B15/38—Devices for supplying, feeding, or guiding threads to needles
    • D04B15/54—Thread guides
    • D04B15/56—Thread guides for flat-bed knitting machines
    • D04B15/565—Associated thread-clamping or thread-severing devices
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B15/00—Details of, or auxiliary devices incorporated in, weft knitting machines, restricted to machines of this kind
    • D04B15/66—Devices for determining or controlling patterns ; Programme-control arrangements
    • D04B15/80—Devices for determining or controlling patterns ; Programme-control arrangements characterised by the thread guides used

Definitions

  • the invention relates to a threading and thread changing device for thread guides, in particular for flat knitting machines, which have at least one thread guide channel, the inlet opening of which is aligned with a thread blowing nozzle of the device.
  • the invention has for its object to combine such a device with a thread changing device and to design so that it works reliably.
  • the object is achieved with a device of the type mentioned in the invention with the features listed in the characterizing part of the main claim.
  • the combined threading and thread changing device allows automatic loading of the thread guides and an automatic change of the threads guided by them.
  • the device designed according to the invention because a separate thread guide no longer has to be provided for each color or type of yarn used; or the device allows the use of a number of different threads, the number the thread guide to be used on the machine.
  • the device can be arranged stationary, so that the thread guides must be fed to it for loading or for changing the thread.
  • the device with its several parts can also be designed to be movable, so that it can be brought to the thread guides.
  • the threading and thread changing device is designed so that a knitting machine does not have to be stopped to insert a thread into a thread guide or to change the thread.
  • the high level of operational safety required here is achieved by a simple construction of the device, the thread metering part having a thread loop former common to all threads in the form of a blow nozzle bar running transversely to all the threads and arranged above the plurality of thread loop regions.
  • a mechanically effective thread retraction web which can be lowered into the adjacent plurality of thread loop regions, can also be provided as the thread loop former.
  • each thread By means of the blow nozzle bar or the thread retraction web, supply loops for each thread are formed in the thread measuring device to a length which is sufficient to bring a thread to be inserted through the thread guide into the additional clamping device, or out of the thread guide into the nozzle head behind the blow nozzle withdraw again.
  • the thread clamping points in front of and behind each of the thread loop regions of the thread measuring device which are advantageously all arranged next to one another, can advantageously each have a spring-loaded movable clamping jaw, which is coupled to a pneumatic, hydraulic, electrical or also mechanical adjusting element.
  • the thread clamping points either ensure that a formed thread loop remains secured as long as the thread in question is not inserted, or that the thread can be drawn from a supply spool or withdrawn from a thread guide via the nozzle head to form the thread loop, or that an inserted thread has a free passage through the thread metering part.
  • 1 to 5 show the individual parts of the threading and thread changing device in connection with a thread guide of a flat knitting machine in different operating states, which the device assumes in the course of a thread change.
  • the threading and thread changing device arranged on a schematically indicated, stationary or movable carrier 10 has a nozzle head 11, a thread metering part 12 and an additional thread clamping and cutting device 13.
  • the device allows a change between several individual threads, but only the parts for two threads 14 and 15 are shown for reasons of clarity.
  • the figures show a flat knitting machine in a schematic representation of a needle bed 16, a thread guide rail 17 and a thread guide 18 arranged longitudinally adjustable on the thread guide rail 17 with a thread guide carriage 19 and a thread guide arm 20.
  • the thread guide 18 has on its thread guide arm 20 a thread outlet opening 21 and a left and a right thread inlet opening 22 and 23, wherein separate thread guide channels 24 can run between the thread inlet openings 22, 23 and the thread outlet opening 21 in the thread guide arm 20.
  • the nozzle head 11 has a separate inlet channel 25, 26 for each thread of the device with subsequent expansion, all of which lead to a common blowing space 27 which ends in a common blowing nozzle 28 which is aligned with the thread inlet openings 22 or 23 of the thread guide 18.
  • the compressed air is fed to the nozzle head 11 via a feed line 29, which leads via a valve device, not shown.
  • the thread metering part 12 of the device has a plate-like guide body 30.1, 30.2 for each thread 14, 15.
  • the guide bodies 30 are arranged next to one another perpendicular to the plane of the drawing.
  • the two guide bodies 30.1 and 30.2 are shown offset from one another in the figures only for reasons of clarity.
  • the guide bodies 30, here 30.1, 30.2, have a deep indentation in their central part for a thread loop region 31, here 31.1, 31.2, and a common thread loop former, here a pneumatic one in the form of a blow nozzle bar 32, extends over these thread loop regions 31 of the guide bodies 30 , with the help of which the threads 14 and 15 can be blown into the thread loop regions 31 to form a thread loop 14.1 or 15.1.
  • a thread clamping point with a movable clamping jaws 33, 34 is arranged in front of and behind each thread loop region 31.
  • the thread clamping points of each guide body 30 can be controlled separately, in this case the front thread clamping jaw 33.1 and the rear thread clamping jaw 34.1 of the guide body 30.1 for the thread 14 and the front clamping jaw 33.2 and the rear clamping jaw 34.2 of the guide body 30.2 for the thread 15.
  • the movable thread jaws 34 are pneumatically adjustable in the illustrated embodiment and with a Adjusting piston 35 coupled, which is held in the open state by means of a compression spring 36 in the idle state.
  • the movable clamping jaws 33, 34 are thus brought into the clamping position by compressed air supply, which is indicated in the figures by compressed air arrows 37.
  • the additional thread clamping and cutting device 13 has a thread clamp 39 with a movable jaw, which is adjustable here by means of an electromagnet 38, and a pair of scissors 40 with a movable blade, which is also adjustable by means of an electromagnet 41.
  • the threading and thread changing device is assigned a control device, not shown here, with which the sequential and coordinated control of the individual drive parts of the device is effected.
  • FIG. 1 shows the thread guide 18 to be equipped with the thread 14, with the thread inlet opening 23 of its thread guide arm 20 docked onto the blowing nozzle 28 of the nozzle head 11.
  • the nozzle head 11 is already placed under compressed air, which flows through the feed line 29 into the blowing space 27, into the blowing nozzle 28 and from there into the thread guide channel 24 of the thread guide arm 20 and detects the end of the thread 14 located in the nozzle head 11.
  • the front movable clamping jaw 33.1 of the guide body 30.1 of the thread metering part 12 is in the open position, so that the thread 14 can be taken into the thread guide arm 20 by lifting the thread loop 14.1 from the air flow.
  • the length of the thread loop 14.1 is dimensioned such that it is sufficient to bring the beginning of the thread 14 through the thread outlet opening 21 of the thread guide 18 into the thread clamp 39, as shown in FIG. 2.
  • After closing the thread clamp 39 is in the thread metering part 12 also opens the rear movable clamping jaw 34.1 of the guide body 30.1 associated with the thread 14, whereupon the thread guide 18 according to FIG. 3 can be uncoupled from the nozzle head 11 with the thread 14 being pulled and pulled in and moved on its guide rail 17.
  • the additional thread clamp 39 can be opened so that the thread start can fall out of the thread clamp 39.
  • the thread guide 18 is docked again on the nozzle head 11.
  • the thread 14 guided by the thread guide 18 is inserted into the thread scissors 40.
  • the rear thread clamping jaws 34.1 are closed, so that thread 14 can no longer be drawn into the nozzle head 11.
  • the thread scissors 40 are then actuated and cut through the thread 14. This state can be seen in FIG. 5.
  • compressed air is fed to the nozzle bar 32, and the thread 14 is thus inserted again into a thread loop 14.1 in the thread loop region 31.1 of the guide body 30.1, the thread loop being formed only by pulling the thread 14 out of the thread guide arm 20 into the nozzle head 11 can be, since only the front jaw 33.1 is open.
  • the front jaw 33.1 is closed and thus the newly formed thread loop 14.1 is secured.
  • the front clamping jaw 33.2 of the guide body 30.2 assigned to the thread 15 is opened, whereupon the thread 15 by means of compressed air from the blowing nozzle 11 while lifting the thread loop 15.1 into the thread guide 18 can be blown into the area of the thread clamp 39. Then the process described above is repeated.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Machines (AREA)

Claims (6)

  1. Dispositif d'enfilage et de changement de fils pour guide-fils (18), en particulier pour des machines à tricoter rectilignes, comportant pour l'arrivée du fil au moins un canal de guidage (24) dont l'orifice d'entrée (23) coïncide avec un ajutage (28) d'insufflation des fils du dispositif, caractérisé
       en ce que l'ajutage d'insufflation (28) prévu pour l'introduction des fils est disposé dans une tête d'insufflation (11) qui comporte des canaux d'arrivée (25,26) pour plusieurs fils (14,15) ;
       en ce qu'un système (12) de mesure des fils est prévu en amont de la tête d'insufflation (11), ce système comportant pour chacun des fils (14,15) une zone (31) de formation des boucles de fils, située pour chaque fil entre des organes antérieur et postérieur (33,34) de serrage du fil, ces organes de serrage étant commandés séparément, et le système de mesure (12) comportant en outre au moins un organe (32) pour former les boucles de fils ;
       en ce qu'en outre, dans la zone d'action d'au moins un guide-fils (18), est prévu un appareil (13) de serrage et de sectionnement d'un fil (14,15) sortant du guide-fils (18) après y être passé ;
       en ce qu'un système de commande est prévu pour actionner l'une après l'autre et de manière coordonnée les parties actives du dispositif.
  2. Dispositif selon la revendication 1, caractérisé en ce que le système (12) de mesure des fils comporte pour tous les fils (14,15) un organe commun de formation des boucles (32) constitué par un barreau de soufflage qui est disposé au-dessus des zones de formation des boucles (31.1, 31.2).
  3. Dispositif selon la revendication 1, caractérisé en ce que le système (12) de mesure des fils comporte pour tous les fils (14,15) un organe commun de formation des boucles, constitué par un barreau à mouvement d'enfoncement, orienté transversalement par rapport à tous les fils en regard des zones de formation des boucles de fils (31.1, 31.2) qui sont disposées côte à côte.
  4. Dispositif selon l'une des revendications 1 à 3, caractérisé en ce que l'ensemble constitué par la tête (11) d'insufflation des fils, le système (12) de mesure des fils et l'appareil complémentaire de serrage et de sectionnement (13) est monté de manière mobile sur la machine à tricoter.
  5. Dispositif selon l'une des revendications 1 à 4, caractérisé en ce que l'organe (39) de serrage des fils prévu dans l'appareil (13) de serrage et de sectionnement des fils est monté de manière à se trouver en regard de l'orifice (21) d'éjection du guide-fils (18) lorsque celui-ci est en appui contre la tête d'insufflation (11).
  6. Dispositif selon l'une des revendications 1 à 4, caractérisé en ce que les organes (33,34) de serrage des fils de l'appareil (12) de mesure des fils comportent chacun une mâchoire de serrage mobile associée à un élément de réglage (35).
EP91101876A 1990-03-14 1991-02-11 Dispositif d'enfilage et de changement de fils pour guide-fils Expired - Lifetime EP0446625B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4008058 1990-03-14
DE4008058A DE4008058A1 (de) 1990-03-14 1990-03-14 Einfaedel- und fadenwechselvorrichtung fuer fadenfuehrer

Publications (2)

Publication Number Publication Date
EP0446625A1 EP0446625A1 (fr) 1991-09-18
EP0446625B1 true EP0446625B1 (fr) 1995-09-20

Family

ID=6402127

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91101876A Expired - Lifetime EP0446625B1 (fr) 1990-03-14 1991-02-11 Dispositif d'enfilage et de changement de fils pour guide-fils

Country Status (5)

Country Link
US (1) US5159822A (fr)
EP (1) EP0446625B1 (fr)
JP (1) JP2597524B2 (fr)
DE (2) DE4008058A1 (fr)
ES (1) ES2079498T3 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE1007898A3 (nl) * 1993-12-22 1995-11-14 Picanol Nv Inrichting voor weefmachines.
DE4432222C1 (de) * 1994-09-10 1996-05-02 Mayer Textilmaschf Verfahren und Kettenwirkmaschine zur Herstellung einer gemusterten Wirkware
DE19611320C2 (de) * 1996-03-22 1999-05-20 Dornier Gmbh Lindauer Verfahren und Vorrichtung zum pneumatischen Unterstützen des Eintragens und Spannens eines Schußfadens in Webmaschinen
GB9719791D0 (en) * 1997-09-18 1997-11-19 Textured Jersey Uk Limited An accessory for feeding yarn in a knitting machine
EP1918439B1 (fr) * 2006-11-03 2011-09-21 H. Stoll GmbH & Co. KG Ensemble pour pincer et sectionner des fils avec dispositif pour attribuer et enlever les fils
DE102010044127B3 (de) * 2010-11-18 2011-12-29 Lindauer Dornier Gesellschaft Mit Beschränkter Haftung Greiferkopf zum Eintrag von Schussfäden an einer Greiferwebmaschine sowie eine Greiferwebmaschine mit einem derartigen Greiferkopf
CN103603131A (zh) * 2013-12-04 2014-02-26 宁波慈星股份有限公司 针织横机中的气动剪刀夹子装置
CN111648015B (zh) * 2020-05-09 2021-10-29 福建睿能科技股份有限公司 电脑横机升降型纱嘴换色装置及横机

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5520027B2 (fr) * 1972-05-01 1980-05-30
NL7206367A (fr) * 1972-05-10 1973-11-13
DE2531734C2 (de) * 1975-07-16 1983-12-22 Sulzer Morat Gmbh, 7024 Filderstadt Fadenführung an maschenbildenden Maschinen mit umlaufenden Fadenführern
GB1588964A (en) * 1977-08-04 1981-05-07 Iws Nominee Co Ltd Textile process and device
CH639152A5 (de) * 1979-05-04 1983-10-31 Loepfe Ag Geb Elektronischer schussfadenwaechter an einer webmaschine mit greiferschuetzen.
JPS58104247A (ja) * 1981-12-11 1983-06-21 株式会社豊田自動織機製作所 流体噴射式織機における不良緯糸処理方法
CH654601A5 (de) * 1982-04-07 1986-02-28 Sulzer Ag Schussfadenspannvorrichtung fuer webmaschinen, insbesondere greiferpojektil-webmaschinen.
US4637229A (en) * 1985-02-11 1987-01-20 Taylor James W Jr Pneumatic thread tensioning device
DE3701671C2 (de) * 1987-01-22 1994-11-03 Stoll & Co H Flachstrickmaschine
DE3712264C2 (de) * 1987-04-10 1994-12-15 Stoll & Co H Verfahren und Einrichtung zur Gewährleistung eines lagegenauen Wechselfadeneinsatzes in einer Wirk- oder Strickmaschine
DE3812960A1 (de) * 1987-10-06 1989-04-20 Textilma Ag Greiferwebmaschine
JPH01314762A (ja) * 1988-06-16 1989-12-19 Sadao Sawada 空気流による給糸装置
EP0356380B1 (fr) * 1988-08-25 1994-11-23 Sulzer RàœTi Ag Procédé pour éviter les pics de contrainte dans la trame lors de son introduction au moment du freinage

Also Published As

Publication number Publication date
JPH04228660A (ja) 1992-08-18
EP0446625A1 (fr) 1991-09-18
US5159822A (en) 1992-11-03
JP2597524B2 (ja) 1997-04-09
DE59106501D1 (de) 1995-10-26
ES2079498T3 (es) 1996-01-16
DE4008058A1 (de) 1991-09-19

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