EP0464424B1 - Verfahren zum selbsttätigen Anpassen der Bremskraft einer in der Spindelhohlachse einer Doppeldraht-Zwirnspindel angeordneten Fadenbremse und mit einer entsprechenden Fadenbremse ausgerüstete Doppeldraht-Zwirnspindl - Google Patents

Verfahren zum selbsttätigen Anpassen der Bremskraft einer in der Spindelhohlachse einer Doppeldraht-Zwirnspindel angeordneten Fadenbremse und mit einer entsprechenden Fadenbremse ausgerüstete Doppeldraht-Zwirnspindl Download PDF

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Publication number
EP0464424B1
EP0464424B1 EP91109766A EP91109766A EP0464424B1 EP 0464424 B1 EP0464424 B1 EP 0464424B1 EP 91109766 A EP91109766 A EP 91109766A EP 91109766 A EP91109766 A EP 91109766A EP 0464424 B1 EP0464424 B1 EP 0464424B1
Authority
EP
European Patent Office
Prior art keywords
spindle
braking
brake
thread
twisting spindle
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
EP91109766A
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German (de)
English (en)
French (fr)
Other versions
EP0464424A1 (de
Inventor
Johannes Frentzel-Bayme
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.)
Palitex Project Co GmbH
Original Assignee
Palitex Project Co 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 Palitex Project Co GmbH filed Critical Palitex Project Co GmbH
Publication of EP0464424A1 publication Critical patent/EP0464424A1/de
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Expired - Lifetime 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
    • D01H13/00—Other common constructional features, details or accessories
    • D01H13/10—Tension devices
    • D01H13/104—Regulating tension by devices acting on running yarn and not associated with supply or take-up devices
    • D01H13/106—Regulating tension by devices acting on running yarn and not associated with supply or take-up devices for double-twist spindle

Definitions

  • thread storage in the area of the thread storage disk is a necessary important operating criterion for the precisely running twisting process.
  • the thread wrapping on the thread storage disk is absolutely necessary to build up an additional thread tension for the balance between the inner thread tension and the balloon tension.
  • the wrap angle of the thread around the thread storage disk is referred to as storage.
  • a Over and under storage leads to negative sequelae, which ultimately result in thread breaks.
  • the storage must be individually tailored to the yarn titer, the spindle geometry and the spindle speed as well as the take-off speed.
  • the storage acts like an almost mass-free and therefore inertia-free thread brake, the law of which corresponds to the rope friction formula taking into account the centrifugal force. If a parameter of the thread balloon is changed with the same internal braking, e.g. the spindle geometry (diameter, height), the yarn titer or the spindle speed, the storage also changes.
  • the invention is based on the object of designing a method for automatically adjusting the braking force of a thread brake arranged in the spindle hollow axis of a double-wire twisting spindle and a corresponding double-wire twisting spindle such that the braking force changes automatically when the operating speed of the spindle changes without additional intervention from outside ago changed so that despite changed operating conditions the storage angle remains unchanged or almost unchanged.
  • the solution according to the invention essentially consists in the fact that to change the braking force of the thread brake arranged in the interior of the spindle hollow axis, the underpressure which is inevitable in the region of the spindle hollow axis when a double-wire twisting spindle is running is used.
  • This underpressure arises from the fact that the rotating thread storage disk, which is present in a double-wire twisting spindle, works like a centrifugal pump due to its radially directed thread guide channel, as a result of which part of the air is thrown out of the hollow-axis region of the spindle. Since the hollow axis is closed by the thread brake, an underpressure inevitably builds up below the thread brake, which is used according to the invention to change the position of a braking surface of the thread brake and thus to change the braking force.
  • Fig. 1 shows the essential parts of a double-wire twisting spindle of a known type, namely the whorl 1, the turntable 2 with the thread storage disk 2.1 arranged underneath, the bobbin 3 with the protective pot base 3.1 and the thread inlet tube 4.
  • the bobbin 3 is in operation of the spindle against the essentially the whorl 1, the turntable 2 and the thread storage disk 2.1 comprising spindle rotor kept at rest.
  • the thread F is pulled up from the bobbin 5, inserted into the thread inlet tube 4 and guided downward through the spindle holing axis. Below the turntable 2, the thread is deflected by 90 o and through the thread guide channel 2.2 the thread storage disk 2.1 led to the outside to form a balloon.
  • the thread F loops around the thread storage disk 2.1, not shown, in the manner shown schematically in FIG. 2 for the purpose of thread storage.
  • the angle of wrap of the thread is indicated in Fig. 2 and amounts there about 360 o.
  • this thread storage angle can assume values from 0 o to over 360 o , a storage angle of 0 o meaning that the thread is deflected only by 90 o after exiting the thread guide channel 2.1 and radially outwards or upwards into the Thread balloon is guided.
  • the thread balloon formed by the thread F after leaving the thread storage disk 2.1 is delimited at its apex by the thread guide eyelet 10, from which the thread is carried in the usual way to a winding device (not shown).
  • the thread storage angle is determined, among other things, on the one hand essentially by the spindle speed (speed of the spindle rotor) and on the other hand also by the setting of the thread brake, which is arranged inside the spindle retraction axis through which the thread F passes and is shown in Fig. 2 in a conventional design, e.g. known from DE-A-3 243 157, and is shown in Fig. 3 in the inventive design.
  • a thread brake designed as a capsule brake which is loaded by a compression spring.
  • This thread brake comprises, as essential components, upper and lower brake rings 6 and 9, between which the brake capsule 7 is supported as a brake body, which consists of a lower part 7.2 and an upper part 7.1 telescopically and in which a compression spring 8 is arranged.
  • the coil carrier 3 is mounted by means of bearings 11;
  • an inner protective pot hub 3.2 connects to the protective pot base 3.1.
  • a rotary body 12 is pushed onto the protective pot hub 3.2 and has a lower cylinder section 12.1 of larger diameter, a frustoconical housing intermediate section 12.2 and an upper cylinder section 12.3 with a smaller diameter than section 12.1.
  • the intermediate section 12.2 is provided with openings 12.21, the opening cross section of which can be changed by means of a rotary ring 15 placed on the intermediate section 12.2, which in the manner shown has openings which can be brought into juxtaposition with the openings 12.21.
  • a cylindrical brake housing 13 is placed on the upper cylinder section 12.3, in the upper part of which the thread inlet pipe 4 is inserted.
  • An axially displaceable piston 14 is accommodated in the brake housing 13 and has a central opening into which the brake ring 6 forming the upper braking surface is inserted.
  • the thread storage disc acts with its thread guide channel 2.2. like a centrifugal pump, such that within the hollow spindle axis
  • a suction air flow acting in the direction of the arrow f2 is built up by centrifugal force with the tendency that with increasing speed of the spindle or the thread storage disk, the piston 14 is pulled down and thereby the braking force between the brake capsule 7 and the brake rings 6 and 9 is increased. It is thereby achieved that the inner braking force applied by the thread brake and the thread storage are in the desired balance with the forces of the thread balloon in accordance with the law described at the beginning.
  • the vacuum also increases quadratically with the speed.
  • the resulting change in the braking force of the inner brake therefore increases approximately square.
  • the principle according to the invention can also be implemented with a so-called grid brake, in which under the influence a changing negative pressure in the region of the hollow spindle axis, the distance between finger-like brake bodies is changed.
  • the principle according to the invention can also be implemented in a plate or plate brake, in which the force on interacting brake body elements and brake surfaces is changed, which are arranged on a piston element comparable to the piston 14 within the hollow spindle axis.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
EP91109766A 1990-07-04 1991-06-14 Verfahren zum selbsttätigen Anpassen der Bremskraft einer in der Spindelhohlachse einer Doppeldraht-Zwirnspindel angeordneten Fadenbremse und mit einer entsprechenden Fadenbremse ausgerüstete Doppeldraht-Zwirnspindl Expired - Lifetime EP0464424B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4021272 1990-07-04
DE4021272A DE4021272C2 (de) 1990-07-04 1990-07-04 Doppeldraht-Zwirnspindel mit einer oberhalb der Fadenspeicherscheibe im Bereich der Spindelhohlachse angeordneten Fadenbremse

Publications (2)

Publication Number Publication Date
EP0464424A1 EP0464424A1 (de) 1992-01-08
EP0464424B1 true EP0464424B1 (de) 1995-01-25

Family

ID=6409626

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91109766A Expired - Lifetime EP0464424B1 (de) 1990-07-04 1991-06-14 Verfahren zum selbsttätigen Anpassen der Bremskraft einer in der Spindelhohlachse einer Doppeldraht-Zwirnspindel angeordneten Fadenbremse und mit einer entsprechenden Fadenbremse ausgerüstete Doppeldraht-Zwirnspindl

Country Status (4)

Country Link
EP (1) EP0464424B1 (cs)
JP (1) JPH04245939A (cs)
CZ (1) CZ281395B6 (cs)
DE (2) DE4021272C2 (cs)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008033849A1 (de) * 2008-07-19 2010-01-21 Oerlikon Textile Gmbh & Co. Kg Verfahren zum Betreiben einer Spindel einer Doppeldrahtzwirn- oder Kabliermaschine
CN107083599A (zh) * 2017-02-27 2017-08-22 绍兴易纺机械制造有限公司 一种加捻机的加捻装置以及使用该加捻装置的加捻机
CN109811435B (zh) * 2019-03-19 2024-06-11 浙江自力机械有限公司 一种气动锭子

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2662364A (en) * 1947-12-20 1953-12-15 North American Rayon Corp Yarn tensioning means for twisters
DE1510845B1 (de) * 1965-03-22 1970-07-23 Palitex Project Co Gmbh Fadenbremsvorrichtung an Doppeldrahtzwirnspindeln
DE2914656C2 (de) * 1979-04-11 1982-04-22 Palitex Project-Company Gmbh, 4150 Krefeld Fadenbremse insbesondere für Doppeldraht-Zwirnspindeln
DE3104748C2 (de) * 1981-02-11 1984-11-08 Palitex Project-Company Gmbh, 4150 Krefeld Pneumatisch durchfädelbare Fadenbremse, insbesondere für eine Doppeldraht-Zwirnspindel
DE3118873C2 (de) * 1981-05-13 1985-01-03 Palitex Project-Company Gmbh, 4150 Krefeld Doppeldraht-Zwirnspindel
DE3243157C2 (de) * 1982-11-23 1985-01-24 Palitex Project-Company Gmbh, 4150 Krefeld Fadenbremse mit zugeordneter druckluftbetätigter Einfädelvorrichtung, insbesondere für Doppeldraht-Zwirnspindeln
DE3330523C1 (de) * 1983-08-24 1984-09-06 Palitex Project-Company Gmbh, 4150 Krefeld Doppeldraht-Zwirnspindel

Also Published As

Publication number Publication date
EP0464424A1 (de) 1992-01-08
CZ281395B6 (cs) 1996-09-11
DE59104373D1 (de) 1995-03-09
JPH04245939A (ja) 1992-09-02
DE4021272C2 (de) 1995-06-22
DE4021272A1 (de) 1992-01-09
CS204891A3 (en) 1992-02-19

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