EP0014897B1 - Dispositif pour machines textiles - Google Patents

Dispositif pour machines textiles Download PDF

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Publication number
EP0014897B1
EP0014897B1 EP80100591A EP80100591A EP0014897B1 EP 0014897 B1 EP0014897 B1 EP 0014897B1 EP 80100591 A EP80100591 A EP 80100591A EP 80100591 A EP80100591 A EP 80100591A EP 0014897 B1 EP0014897 B1 EP 0014897B1
Authority
EP
European Patent Office
Prior art keywords
thread
roller
stitch
embroidery
threads
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
Application number
EP80100591A
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German (de)
English (en)
Other versions
EP0014897A1 (fr
Inventor
August Heinzle
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Individual
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Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP0014897A1 publication Critical patent/EP0014897A1/fr
Application granted granted Critical
Publication of EP0014897B1 publication Critical patent/EP0014897B1/fr
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Classifications

    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05C—EMBROIDERING; TUFTING
    • D05C11/00—Devices for guiding, feeding, handling, or treating the threads in embroidering machines; Machine needles; Operating or control mechanisms therefor
    • D05C11/08—Thread-tensioning arrangements
    • 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
    • D04B15/44—Tensioning devices for individual threads

Definitions

  • the invention relates to a device for feeding or returning the thread or threads on stitch, loop and / or stitch-forming textile machines using a thread roller or roller, which in the feed and take-off direction depending on a punch card control or a transport movement of the needles guiding the threads or other tools provided for stitch, loop and / or stitch formation is periodically driven and which keeps the thread or threads under frictional engagement by single or multiple loops, whereby the thread slides the roller is prevented.
  • the threads run over a rotatably mounted brake roller, which are guided over deflection bodies arranged on this brake roller.
  • the brake roller can be rotated via an adjustment device which can be influenced by a punch card controller, depending on the stitch length, so that the thread brake surface covered by the threads is changed depending on the wrap angle.
  • the retraction path of the thread therefore depends on the thread tension. With appropriate thread tension, caused by the movement of the thread guide, the friction on the thread roller is overcome and the threads are retightened. An individual thread specification and an individual tightening of a stitch is not possible.
  • a thread feed device for multi-needle-gate embroidery machines is known (DE-C-692 218). As much thread should be fed for each individual stitch as corresponds to the stitch length. None is said about the portion of the thread that is needed for the stitch formation itself, so that it is absolutely necessary to provide thread guides in this version too. Otherwise there would be no stitch formation and no appropriate stitch tightening.
  • a feed movement for a thread roller could be derived from the gate drive shafts. This may prevent excessive thread tension while the threads are being pulled, but this does not bring any improvement, especially with embroidery machines, especially since only additional, complicated mechanical parts have to be installed without other parts being replaced.
  • a method and a device for tensioning the embroidery threads is known (CH-A-91 531), in which a thread roller is driven periodically in both directions of rotation depending on the needle movement or a punch card control and the thread is looped by one or more times with frictional engagement holds, preventing the thread from sliding on the roller.
  • the retraction of the thread is dependent on the thread tension or the braking effect in this known construction because of the spring-loaded friction clutch.
  • This thread roller moves practically after each forward movement against the force of a spring, so that this thread roller always tries to move back as soon as it is only to be fed further via a tooth pawl.
  • the present invention has for its object to provide a device on textile machines, with which these disadvantages can be avoided and with which the thread or threads can be fed and retightened, and with which the stitches are tightened , Meshes or the like and thus a retraction of the thread or threads can be carried out to the desired extent.
  • an electric or hydraulic actuator is provided for the drive of the thread roller or reel, which determines the feed path and the take-off path in each case independently of the thread tension, possibly changing from stitch to stitch in the path.
  • a corresponding thread feed can take place from the punch card control, whereby it is possible, for example, to carry out an additional thread feed for the stitch movement of the needle only immediately before the needle insertion, that an additional thread is added when a loop is formed and then of course a corresponding thread tightening after the stitch formation in the desired extent is made possible.
  • the perfect thread tightening after stitch formation is an essential criterion for perfect embroidery goods and of course for any other perfect textile product.
  • Such a thread roller or reel also acts as a thread brake, so that the advancement and retraction when stitches or loops and stitches are tightened can take place without the thread or threads slipping.
  • thread conductors that can be moved back and forth, on the other hand, the tensile force was transmitted both to the supply spool of the thread and to the textile product via the needle.
  • the measures according to the invention therefore have an even more advantageous effect, particularly in the case of sensitive textile products or in the production of very fine patterns.
  • a thread roller 1 is shown, as is already available in a conventional arrangement in embroidery machines.
  • This thread roller 1 is also called an emery roller.
  • a thread 2 is drawn off from a corresponding bobbin 3 via this thread roller 1, the thread serving purpose moderately wraps the thread roller 1 once or several times so that a thread brake is achieved.
  • the thread 2 then leads to a small thread conductor 4 and then back over the large thread conductor 5 to the needle 6.
  • the thread 2 is withdrawn from the bobbin 3 by pivoting the thread conductor 4 and 5, since the other ends of the thread on the Embroidery web 7 are fixed, whereby the thread roller 1 is rotated by this movement.
  • the large thread guide 5 Since a relatively large loop is required during the stitch formation process, the large thread guide 5 is pivoted against the embroidery path 7, so that the thread 2 is completely loose and can form a large loop for the passage of the shuttle 8. After the stitch formation, the large thread guide 5 is again pulled back into its position shown in FIG. 1, so that the stitch is thereby attracted.
  • the thread roller 1 is designed without a drive, but there is also a locking device which can optionally be used to lock the rotary movement of the thread roller 1. This possibility is used in the case of a desired particularly sharp tightening of the stitch.
  • the thread roller 1 is now equipped with a drive, which can be actuated directly or indirectly from the punch card control in an embroidery machine.
  • the thread feed can be converted in a simple manner by the thread or threads 2 continuing to be guided over the thread conductors 4 and 5, the movement of these thread conductors being stopped, however.
  • the feeding, pulling and pulling back of the thread 2 then takes place only through the thread roller 1, the thread 2 being held in frictional engagement on the thread roller 1 by the single or multiple wrapping of the thread.
  • FIG. 2 A significantly improved embodiment is shown in FIG. 2, which can be used in particular with new embroidery machines.
  • this variant is also possible with old embroidery machines, since the thread guides can also be removed there if necessary.
  • the available space for the needle rail is considerably larger, this also playing an important role in particular in the arrangement of multicolor embroidery devices.
  • a drive which can be actuated by the punch card controller is provided.
  • impulses are superimposed, which cause the thread roller 1 to run forwards and backwards.
  • stitch formation and thus when loop formation is required a corresponding additional feed of the thread roller 1 is accomplished, the stitch being tightened subsequently after the stitch formation has ended by turning back the roller 1.
  • the simplification that results from this is therefore of great value, since the small and the large thread guides 4 and 5 can practically be omitted.
  • various control rods, drive elements for the thread guide and other machine parts are no longer required, so that in the case of new systems, the omission of these parts completely compensates for the need for an additional drive for the thread roller.
  • the coil 3 can be arranged lying or standing upright, as can be seen from either FIG. 1 or FIG. 2.
  • control device for driving the thread roller is assigned manually operable setting regulators which serve to enlarge or reduce the rotational movement of the thread roller 1 which is predetermined as a function of the punch card control. Then, for example, an impulse triggered by the punch card controller for a strong tightening of the stitch (blocking device on) can be further strengthened or weakened, so that an individual additional control possibility is given. Furthermore, fine settings for the feed and the retraction of the threads could also be achieved in this way, for example when drilling or during other additional work on the embroidery machine.
  • the device according to the invention brings about a substantial improvement and simplification of textile machines compared to the previously common arrangement of back and forth thread conductors, a large number of back and forth movable, relatively heavy machine parts are eliminated, the drive speed of the textile machines can thereby be increased further, and moreover there is a significant reduction in noise. Even when converting existing textile machines, there are significant advantages, since the previously provided, back and forth moving parts can simply be stopped, so that the advantages described are also fully realized.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Sewing Machines And Sewing (AREA)

Claims (2)

1. Dispositif pour amener ou bien faire revenir le fil (2) ou bien les fils sur des machines textiles réalisant des points, des boucles et/ou des mailles, en utilisant un cylindre ou rouleau de fil (1), qui est entraîné périodiquement dans le sens d'amenée et de tirage en fonction d'une commande à carte perforée ou bien d'un déplacement de transport des aiguilles (6) conduisant les fils, ou bien d'autres outils (6, 8) prévus pour réaliser les points, les boucles et/ou les mailles, cylindre ou rouleau qui maintient le fil ou les fils (2) par frottement grâce à un ou plusieurs enroulements, un glissement du fil sur le cylindre étant empêché, dispositif caractérisé en ce que, pour l'entraînement du cylindre ou rouleau de fil (1), il est prévu un entraînement de réglage électrique ou hydraulique déterminant la course d'amenée et de tirage selon le cas de manière impérative et indépendamment de la tension du fil, avec modification éventuelle de la course de point en point.
2. Dispositif selon la revendication 1, caractérisé en ce que, à un dispositif de commande prévu en amont de l'entraînement, sont associés des régulateurs de réglage susceptibles d'être actionnés manuellement pour augmenter ou réduire le déplacement en rotation du cylindre ou rouleau de fil (1) prédéfini en fonction de la commande par carte perforée ou bien d'un déplacement de transport des aiguilles (6) conduisant les fils (2) ou bien d'autres outils (6, 8) prévus pour réaliser les points, les boucles et/ou les mailles.
EP80100591A 1979-02-20 1980-02-06 Dispositif pour machines textiles Expired EP0014897B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT0130479A AT370144B (de) 1979-02-20 1979-02-20 Einrichtung zur zufuehrung und zum nachziehen des fadens an textilmaschinen
AT1304/79 1979-02-20

Publications (2)

Publication Number Publication Date
EP0014897A1 EP0014897A1 (fr) 1980-09-03
EP0014897B1 true EP0014897B1 (fr) 1984-08-01

Family

ID=3510990

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80100591A Expired EP0014897B1 (fr) 1979-02-20 1980-02-06 Dispositif pour machines textiles

Country Status (5)

Country Link
US (1) US4373457A (fr)
EP (1) EP0014897B1 (fr)
JP (1) JPS55112360A (fr)
AT (1) AT370144B (fr)
DE (1) DE3068760D1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD213705A1 (de) * 1983-02-23 1984-09-19 Plauener Spitze Veb Fadenspann- und waechtervorrichtung fuer stickmaschinen
DE4403365A1 (de) * 1994-02-04 1995-08-10 Saurer Sticksysteme Ag Verfahren und Vorrichtung zum Sticken auf einer Schiffchen-Stickmaschine
DE59600308D1 (de) * 1995-07-26 1998-08-06 Laesser Franz Ag Fadenleitvorrichtung für Schifflistickmaschine
DE50101351D1 (de) * 2000-11-21 2004-02-26 Franz Laesser Ag Diepoldsau Verfahren zur Stichbildung bei einer Stickmaschine und Stickmaschine zur Durchführung des Verfahrens
DE10130345A1 (de) * 2001-06-27 2003-01-09 Zsk Stickmasch Gmbh In Abhängigkeit von der Fadenspannung angesteuerter Fadenantriebsmechanismus
CN113373613A (zh) * 2021-06-11 2021-09-10 诸暨逸绣科技有限公司 缝制设备自动线量计算方法及输送***

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US952858A (en) * 1909-04-09 1910-03-22 Robert Zahn Embroidering-machine.
AT71977B (de) * 1915-01-21 1916-06-26 Vogtlaendische Maschf Ag Fadenanzugsverfahren bei Schiffchenstickmaschinen und Einrichtung zur Ausübung des Verfahrens.
CH91531A (de) * 1920-12-24 1922-02-01 Saurer Ag Adolph Verfahren und Vorrichtung zum Spannen der Stickfäden, sowie von auf Stoff zu stickenden Schnüren bei Stickmaschinen.
US2039236A (en) * 1935-01-02 1936-04-28 Meisel Press Mfg Company All size rotary web press
CH415263A (it) * 1964-10-24 1966-06-15 Metalmeccanica Spa Dispositivo di controllo della rotazione del rullo smerigliato di alimentazione dei fili nelle macchine da ricamo
US3943865A (en) * 1966-03-07 1976-03-16 Deering Milliken Research Corporation Controlled delivery of yarn
CH470514A (de) * 1968-07-10 1969-03-31 Saurer Ag Adolph Bremsvorrichtung für Nadelfäden, insbesondere an Schiffchenstickmaschine oder Steppmaschine

Also Published As

Publication number Publication date
AT370144B (de) 1983-03-10
JPS55112360A (en) 1980-08-29
US4373457A (en) 1983-02-15
ATA130479A (de) 1982-07-15
DE3068760D1 (en) 1984-09-06
EP0014897A1 (fr) 1980-09-03

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