EP0084326B1 - Fadenliefervorrichtung für Textilmaschinen - Google Patents

Fadenliefervorrichtung für Textilmaschinen Download PDF

Info

Publication number
EP0084326B1
EP0084326B1 EP19830100075 EP83100075A EP0084326B1 EP 0084326 B1 EP0084326 B1 EP 0084326B1 EP 19830100075 EP19830100075 EP 19830100075 EP 83100075 A EP83100075 A EP 83100075A EP 0084326 B1 EP0084326 B1 EP 0084326B1
Authority
EP
European Patent Office
Prior art keywords
thread
delivery device
toothed belt
teeth
thread delivery
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
EP19830100075
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0084326A2 (de
EP0084326A3 (en
Inventor
Falk Kühn
Gustav Memminger
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.)
Memminger IRO GmbH
Original Assignee
Memminger IRO GmbH
Memminger GmbH
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 Memminger IRO GmbH, Memminger GmbH filed Critical Memminger IRO GmbH
Publication of EP0084326A2 publication Critical patent/EP0084326A2/de
Publication of EP0084326A3 publication Critical patent/EP0084326A3/de
Application granted granted Critical
Publication of EP0084326B1 publication Critical patent/EP0084326B1/de
Expired 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
    • D04B15/48—Thread-feeding devices

Definitions

  • the invention relates to a thread delivery device for textile machines, in particular for multi-system circular knitting machines, with at least one endless toothed belt that can be set in motion by a drive source, and which is assigned to the individual thread consumption points and is designed as a rod cage, freely rotatably mounted rollers, with its teeth engaging between the rods of the rollers , partially wraps around, each of which is assigned thread guides through which a thread, essentially in the longitudinal direction of the toothed belt, can be inserted on one side into the looping area between the toothed belt and the roller and can be removed from the looping area on the other side.
  • Such a thread delivery device is known from DE-A-2639 206.
  • the teeth of the toothed belt engaging between the rods of the rollers designed as rod cages press the thread arranged in a meandering manner on the one hand against the rods, on the other hand, because the thread is forced to contact the profile shape of the toothed belt in the wrapping region, between the toothed belt and the thread friction increases, with the result that a slip-free conveyance of the thread is achieved in all operating conditions and especially when starting.
  • the rollers are designed as rod cages, there are no fluff deposits or soiling in the region of the rollers in the region of the rollers, as would be the case, for example, with a roller designed as a gearwheel.
  • the teeth of the toothed belt can also penetrate unhindered between the rods and thus press the thread against the rods on their flanks.
  • the profile shape of the teeth of the toothed belt is trapezoidal and, if necessary, selected such that it conforms well to the profile shape of the rods.
  • this thread delivery device ensures an exactly slip-free thread conveyance and works fully satisfactorily for most types of thread.
  • very sensitive yarns and threads that are overused in the looping area.
  • individual fine filaments may be torn off thin polyester yarns, which is naturally undesirable.
  • the object of the invention is therefore to improve the thread delivery device mentioned at the outset in such a way that it can also convey very sensitive yarns and threads while maintaining the slip-free conveying of the thread without having to take any special precautions.
  • the thread delivery device is characterized in that the teeth of the toothed belt have a substantially semicircular rounded profile shape and are each formed at their roots with a rounded surface.
  • the arrangement is advantageously made in such a way that the teeth in the looping area are pressed against their flanks on the bars of the respective roller that are adjacent to them. It has also proven to be advantageous if the tooth flanks and the base area of the tooth gaps are each pressed in two separate areas in the looping area against the bars of the respective roller. This ensures a particularly gentle, but at the same time very effective entrainment of the thread.
  • the tooth gaps can each have a partially circular profile shape adapted to the rod diameter.
  • the arrangement can also be such that the teeth at their roots each pass over a rounded surface into a substantially flat base surface of the tooth gap, which then achieves the aforementioned pressing of the thread on the rods in two separate areas.
  • At least one narrow groove running transversely to the toothed belt is arranged in the base area of the tooth gaps. If there is only one groove per tooth gap, it is advantageously arranged symmetrically to the two adjacent teeth.
  • the length of the teeth of the toothed belt is to be dimensioned such that, on the one hand, the thread is firmly pressed against the rods of the roll in the respective looping area and, on the other hand, the toothed belt can be driven perfectly by its drive source.
  • a design of the toothed belt satisfies these requirements in a good manner, in which the teeth each have a length that extends in the looping area approximately up to the pitch circle of the bars of the respective roller.
  • the thread delivery device shown in FIG. 1 has a holder 2 which can be fastened by means of an arm 1 to a frame (not shown), for example a circular knitting machine, on which a roller 3 is freely rotatable about a vertical axis.
  • the roller 3 is designed in the form of a rod cage, the rods 4 of which lie on a common pitch circle 5 and have the same distances, as can be seen from FIG.
  • the typical rod diameter is 2.5 mm, for example.
  • An endless toothed belt 6 is placed over the roller 3 and can be put into circulation by a drive source (not shown).
  • the toothed belt 6 wraps around the roller 3 in a wrap area that is approximately 180 ° or less.
  • a thread 7 coming from a bobbin, for example, is introduced into this looping area via a thread guide eyelet 8 which at the same time actuates a thread break stop which becomes effective when excessive thread tension occurs.
  • the thread 7 thus introduced into the looping area on one side is led out of the looping area on the other side of the roll 3 via two thread eyelets 9 and fed to the thread consumption point, not shown, for example the knitting point of a circular knitting machine.
  • the teeth 11 of the toothed belt 6 penetrate between the associated rods 4 of the roller 3 in the manner shown in FIG. 3, pressing the meandering thread 7 against the peripheral surface of the rods 4.
  • the teeth 11 have a rounded profile shape which, as illustrated at 12, is essentially approximately semicircular.
  • the teeth 11 are pressed on their flanks at 13 against the respectively adjacent rods 4 of the roll 3, the thread 7, as mentioned, running in between.
  • the teeth 11 each pass over a rounded surface 14 into an essentially flat base surface 15 of the tooth space 16, wherein in each base surface 15 there is in each case a narrow groove which is arranged symmetrically to the two adjacent teeth 11 and runs transversely to the toothed belt 6 17 is provided.
  • This configuration of the toothed belt 6 ensures that the tooth flanks and the base 15 of the tooth gaps 16 are each pressed in two separate areas 13 and 18 (FIG. 3) in the wrap-around area against the bars 4 of the roller 3.
  • the arrangement could also be made in this way. that the tooth gaps 16 each have a partially circular profile shape adapted to the rod diameter, as is indicated in FIG. 3 for a tooth gap at 20.
  • the length of the teeth 11 is dimensioned such that they extend approximately to the pitch circle 5 of the rods 4 of the roller 3 in the looping region (FIG. 3).
  • the toothed belt 6 consists of a flexible plastic material, preferably polyurethane; it contains a reinforcement made of polyamide strands or the like.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Machines (AREA)
  • Forwarding And Storing Of Filamentary Material (AREA)
EP19830100075 1982-01-19 1983-01-06 Fadenliefervorrichtung für Textilmaschinen Expired EP0084326B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3201359 1982-01-19
DE19823201359 DE3201359A1 (de) 1982-01-19 1982-01-19 "fadenliefervorrichtung fuer textilmaschinen"

Publications (3)

Publication Number Publication Date
EP0084326A2 EP0084326A2 (de) 1983-07-27
EP0084326A3 EP0084326A3 (en) 1983-08-03
EP0084326B1 true EP0084326B1 (de) 1985-06-26

Family

ID=6153313

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19830100075 Expired EP0084326B1 (de) 1982-01-19 1983-01-06 Fadenliefervorrichtung für Textilmaschinen

Country Status (7)

Country Link
EP (1) EP0084326B1 (cs)
JP (1) JPS58177858A (cs)
CS (1) CS261216B2 (cs)
DD (1) DD207940A5 (cs)
DE (1) DE3201359A1 (cs)
ES (1) ES519062A0 (cs)
SU (1) SU1210665A3 (cs)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NZ229783A (en) * 1988-07-22 1990-12-21 Cl Pharma Allylaminoethylazoles; fungicidal and antimycotic compositions, methods for preparation and combating fungi
CN107400978A (zh) * 2016-05-18 2017-11-28 陈伯霖 送纱装置

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR970224A (cs) * 1951-01-02
DE1124318B (de) * 1956-01-12 1962-02-22 Wilhelm Herm Mueller & Co K G Zahnriementrieb mit einem Zahnriemen aus Gummi oder Kunststoff
US3103703A (en) * 1956-04-05 1963-09-17 Continental Gummi Werke Ag Mold for producing flexible belts with teeth
DE1199577B (de) * 1964-03-17 1965-08-26 Wiese Fa Hans Holger Zahnriementrieb mit Triebstockverzahnung
US3988941A (en) * 1975-08-01 1976-11-02 Smith Thomas R Drive belt
US4041789A (en) * 1975-12-18 1977-08-16 The Goodyear Tire & Rubber Company Belt drive including toothed belts and toothed pulleys of improved tooth configurations
DE2639206C3 (de) * 1976-08-31 1979-02-08 Gustav Memminger, Verfahrenstechnik Fuer Die Maschenindustrie, 7290 Freudenstadt Fadenliefervorrichtung für mehrsystemige Rundstrickmaschinen

Also Published As

Publication number Publication date
CS261216B2 (en) 1989-01-12
EP0084326A2 (de) 1983-07-27
CS38083A2 (en) 1987-09-17
ES8400350A1 (es) 1983-10-16
DD207940A5 (de) 1984-03-21
JPS58177858A (ja) 1983-10-18
SU1210665A3 (ru) 1986-02-07
EP0084326A3 (en) 1983-08-03
DE3201359A1 (de) 1983-08-04
ES519062A0 (es) 1983-10-16

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