EP0468898A1 - Verfahren und Einrichtung zur Moulinierung von in Form von Kuchen aufgewickelten Fäden und ganz besonders von Glasfäden - Google Patents

Verfahren und Einrichtung zur Moulinierung von in Form von Kuchen aufgewickelten Fäden und ganz besonders von Glasfäden Download PDF

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Publication number
EP0468898A1
EP0468898A1 EP91420260A EP91420260A EP0468898A1 EP 0468898 A1 EP0468898 A1 EP 0468898A1 EP 91420260 A EP91420260 A EP 91420260A EP 91420260 A EP91420260 A EP 91420260A EP 0468898 A1 EP0468898 A1 EP 0468898A1
Authority
EP
European Patent Office
Prior art keywords
wire
cake
spindle
winding
twist
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.)
Withdrawn
Application number
EP91420260A
Other languages
English (en)
French (fr)
Inventor
Denis Sozedde
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.)
ICBT SA
Original Assignee
ICBT SA
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 ICBT SA filed Critical ICBT SA
Publication of EP0468898A1 publication Critical patent/EP0468898A1/de
Withdrawn legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H1/00—Spinning or twisting machines in which the product is wound-up continuously
    • D01H1/10—Spinning or twisting machines in which the product is wound-up continuously for imparting multiple twist, e.g. two-for-one twisting
    • D01H1/105—Arrangements using hollow spindles, i.e. the yarns are running through the spindle of the unwound bobbins
    • D01H1/106—Two-for-one twisting
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H7/00—Spinning or twisting arrangements
    • D01H7/02—Spinning or twisting arrangements for imparting permanent twist
    • D01H7/86—Multiple-twist arrangements, e.g. two-for-one twisting devices ; Threading of yarn; Devices in hollow spindles for imparting false twist
    • D01H7/868—Yarn guiding means, e.g. guiding tubes

Definitions

  • the present invention relates to a method, as well as an installation for its implementation, making it possible to directly carry out the milling (that is to say to communicate a twist) of a wire stored in the form of a crossed winding. without cheek, such as a "cake", and more particularly of glass strands.
  • the material is received in the form of generally large diameter windings, on an inexpensive tube (cardboard), which in the case of glass yarns reaches this point. day in general 300 mm, the thickness of the wire on the cardboard support tube being small and generally between 2 and 5 cms.
  • glass strands (silionne) consists schematically of extruding through dies of molten glass, filaments leaving the die being drawn at high speed and receiving a size before being rewound at high speed without twisting on a cardboard support.
  • the untwisted yarns must receive a certain protective twist, variable according to the applications, intended to give cohesion to the filaments, then arranged in a helix, which improves the resistance to friction and in some measure the tensile strength.
  • This twist is communicated to the threads during a molding and / or twisting operation.
  • molding operation we mean the operation which consists in communicating the twist of the wire at the time of the unwinding of the winding, the wire then being returned.
  • twisting we designate the operation which consists in communicating the twist to the thread at the time of its winding.
  • the method according to the invention is characterized in that the double twist spindle is arranged horizontally (or slightly inclined upward relative to the horizontal, the inclination being at most about 10 °), and this is above either below the winding system.
  • the inlet of the hollow spindle is arranged substantially in the center of the winding of the wire and the latter rests against a smooth guide surface, which promotes scrolling, regulates the tension and eliminates all risks of hooking and winding of the wire around the hollow spindle.
  • the magazine tray that includes such a pin is preferably congruent so that the wire does not form a reserve around said rotary magazine less than one turn, and preferably between 1/4 and 3/4 of turns.
  • any type of known double twist spindle will be used, but more particularly spindles with drive by individual motor, such as those forming the subject of French patent application no. 89.05 768 (publication 2 646 175), the hollow axis of this pin having been extended so that its entry is located substantially in the center of the cake and the store tray being of frustoconical shape, slightly enveloping the base of the pot with inside which is placed the wire cake.
  • a guiding surface in the shape of a warhead or "bell" surrounds the hollow axis over its entire height inside the cake.
  • FIGS 1 and 2 illustrate two embodiments of a machine for implementing the method according to the invention.
  • the same references have been used to designate the same members.
  • such a machine comprises, for each working position, mounted on a common support frame, preferably symmetrically on either side of the latter, a set of moldings proper designated by the general reference (1 ), essentially consisting of a double twist spindle, adapted as will be seen in the following description for the implementation of the method according to the invention, but the entire structure of which is of known type and is produced by example in accordance with the teachings of French patent 89.05 768 (publication 2 646 175).
  • This double twist pin is used to communicate the twist to the wire (2) which is returned in a known manner by an assembly designated by the general reference (3).
  • the path of the wire is made from bottom to top, while in the embodiment illustrated by Figure 2, it is made from top to bottom.
  • the double twist spindle (1) is arranged, not vertically but horizontally ( Figure 2), or slightly inclined relative to the horizontal ( Figure 1). Furthermore, the wire cake (4) is disposed inside the fixed pot (5) that includes such a pin, the cardboard support of said cake having been eliminated. According to the invention, the unwinding of the wire is done not by removing the outer layers of said cake, but by removing said wire from the inside.
  • the wire (2) is brought inside the hollow pin (6), exits laterally through the orifice (7) (see Figure 3), passes around the store tray (8) to be brought in by forming a balloon the inside of the wire guide (9) arranged in the extension of the axis of the spindle and, by a turning roller (10), is brought twisted to the winding assembly (3).
  • the double twist spindle (1) is adapted so that the running of the wire (2) from the cake (4 ) is done so that the end (11) of the hollow axis (8) of the double twist spindle is arranged inside the volume defined by the wire winding.
  • the wire cake has not been shown for simplicity, nor is the smooth warp-shaped (or bell-shaped) surface which is associated with the hollow axis and which is located inside the cake, these elements being shown in more detail in Figure 4 where, however, the drive means have not been shown.
  • the end (11) of the hollow axis of the spindle is arranged substantially in the middle of the cake (4).
  • the rotary magazine (8) preferably has a frustoconical shape slightly enveloping the base of the pot (5) inside which is located the wire cake (4).
  • the hollow axis (6) supports, at its end (11), a smooth surface (12 ), for example in polished stainless steel, having the shape of a bell or a warhead.
  • a smooth surface favors the running of the wire and regulates the tension when calling from the cake.
  • the invention makes it possible to produce machines which can be designed in different ways, depending on requirements, having the reception arranged either below or above the double twist spindle proper.
  • the invention is not limited to the embodiments described above, but it covers all the variants produced in the same spirit.
  • the winding of the twisted wire is carried out without communicating additional torsion, it could be envisaged to use a winding system communicating such additional torsion.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Unwinding Of Filamentary Materials (AREA)
  • Storage Of Web-Like Or Filamentary Materials (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Wire Processing (AREA)
EP91420260A 1990-07-23 1991-07-16 Verfahren und Einrichtung zur Moulinierung von in Form von Kuchen aufgewickelten Fäden und ganz besonders von Glasfäden Withdrawn EP0468898A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9009588 1990-07-23
FR9009588A FR2664911B1 (fr) 1990-07-23 1990-07-23 Procede et installation pour le moulinage de fils enroules sous la forme de gateaux et plus particulierement de fils de verre.

Publications (1)

Publication Number Publication Date
EP0468898A1 true EP0468898A1 (de) 1992-01-29

Family

ID=9399149

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91420260A Withdrawn EP0468898A1 (de) 1990-07-23 1991-07-16 Verfahren und Einrichtung zur Moulinierung von in Form von Kuchen aufgewickelten Fäden und ganz besonders von Glasfäden

Country Status (3)

Country Link
EP (1) EP0468898A1 (de)
JP (1) JPH04245935A (de)
FR (1) FR2664911B1 (de)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB365266A (en) * 1930-12-12 1932-01-21 Dunlop Cotton Mills Ltd Improvements in machines for spinning, doubling, twisting and the like yarns, fibres and the like
US3466864A (en) * 1967-06-19 1969-09-16 Owens Corning Fiberglass Corp Twisting fibrous strands

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB365266A (en) * 1930-12-12 1932-01-21 Dunlop Cotton Mills Ltd Improvements in machines for spinning, doubling, twisting and the like yarns, fibres and the like
US3466864A (en) * 1967-06-19 1969-09-16 Owens Corning Fiberglass Corp Twisting fibrous strands

Also Published As

Publication number Publication date
JPH04245935A (ja) 1992-09-02
FR2664911B1 (fr) 1993-05-21
FR2664911A1 (fr) 1992-01-24

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