US3391529A - Double twist twisting apparatus and method - Google Patents

Double twist twisting apparatus and method Download PDF

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Publication number
US3391529A
US3391529A US599439A US59943966A US3391529A US 3391529 A US3391529 A US 3391529A US 599439 A US599439 A US 599439A US 59943966 A US59943966 A US 59943966A US 3391529 A US3391529 A US 3391529A
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US
United States
Prior art keywords
thread
balloon
spindle
winding
double 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.)
Expired - Lifetime
Application number
US599439A
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English (en)
Inventor
Wahlen Antonius
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.)
Oerlikon Barmag AG
Original Assignee
Barmag Barmer Maschinenfabrik AG
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 Barmag Barmer Maschinenfabrik AG filed Critical Barmag Barmer Maschinenfabrik AG
Application granted granted Critical
Publication of US3391529A publication Critical patent/US3391529A/en
Anticipated expiration legal-status Critical
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
    • D01H1/00—Spinning or twisting machines in which the product is wound-up continuously
    • D01H1/14—Details
    • D01H1/42—Guards or protectors for yarns or threads, e.g. separator plates, anti-ballooning devices
    • D01H1/425—Anti-ballooning rings

Definitions

  • the threads tend to form a so-called double balloon, i.e., two balloon segments formed by partial collapse of the orbiting thread.
  • the depth of collapse depends upon the thread titer, and the axial level at which it occurs depends, oddly, upon the outer diameter of the reserve ring or disc.
  • the contraction becomes by itself so deep that the thread touches the stationary supply winding or the protective casing surrounding it, whereby the balloon collapses and the thread breaks.
  • the critical contraction zone of the balloon lies-when double twist twisting spindles of customary construction are used-always in the lower balloon half and shifts upwardly in response to reduction of the reserve disc diameter.
  • the invention provides that the orbiting thread is supported against the inner side thereof as it runs from the reserve disc to the thread guide during orbiting of the thread at the critical contraction Zone of the thread balloon.
  • the aforesaid support is provided by a support ring rotating concentrically with the spindle. Because of this measure it is possible to brace the thread balloon in the zone of its contraction to prevent is further collapse and to permit it to develop anew.
  • a surprising fact in this case is that, on its further travel from the support ring to the upper thread guide, the thread orbits in an essentially cylindrical course, even when the distance between the support ring and upper thread guide is disproportionately long.
  • the tubes or cops carrying the supply windings may have a length of at least 300 mm., preferably of 380 to 450 mm., and may be made of the finest of synthetic threads (less than 30 denier thread titer, for example of 15 denier) wound at a Winding weight of at least 3 kg.
  • Threads of finer titer in particular, those of delicate material such as polypropylene, are indeed very resistant to a strain in their longitudinal direction, but, on the other hand, they are not able to cope with the strain in cross direction, which would occur in the case of thread running over a stationary support, because of the cross friction acting upon the threads. Such cross friction generates structural defects in the thread or even the melting thereof, the result being thread breakage.
  • the support ring provides on its outer circumference a circular surface which is run over by the thread and is set up at the level of the balloon contraction zone.
  • the support ring rotates together with the spindle and has at least the same outer diameter as the thread run over body, preferably a 10 to 20% larger diameter.
  • the support ring can be rigidly mounted on the run over body of the spindle by length-adustable bars. These bars are adjustable in their length in order to be able to adjust the position of the support ring to best correspond to the respective critical balloon contraction zone.
  • a special advantage of the invention is that the simple support ring installation can be attached easily to existing double twist twisting machines and that the range of application of these machines can be considerably enlarged through such installation.
  • the illustrated double twist twisting spindle 1 comprises a whorl or pulley 2 used to drive by a belt (not shown) the spindle about a vertical axis of rotation.
  • the customary thread reserve ring or disc 3 into which the thread from thread supply spool 4 is discharged through radial passage 5.
  • the thread travels over the lower surface of the thread run over body 6, which is a ring-shaped member having a rounded, circular peripheral edge 7, and orbits as a thread balloon as it runs to the stationary thread guide 8.
  • the thread run-over body 6 rotates concentrically about the axis of the spindle 1 with the whorl 2.
  • the thread guide 8 is positioned about the thread supply spool 4 and is aligned with the axis of spindle 1.
  • the thread guide 8 is a wire loop or pigtail.
  • the support ring 9 has a narrow, rounded, peripheral edge 10 over which the thread runs when the thread balloon tends to collapse inwardly.
  • the diameter of the edge 10 is at least equal to, and preferably is 10 to 20% larger than, the diameter of the circular edge of run-over body 6.
  • the ring rotates with the spindle 1 about the axis of the latter. It is supportcd by vertical legs 11 on d. the thread run-over body 6.
  • the ring 9 preferably is shiftable axially along the spindle to provide for adjustment of the point of contact between the thread balloon and the ring.
  • the legs 11 may be made from tightly fitted, telescoping sections 12 and 13.
  • the supply winding 4 comprises an elongated, coptype thread winding on a winding tube 14, and is held stationary on the stationary spool carrier 15 mounted in known manner in the center of the upper part of the run-over body 6.
  • the thread 15 is drawn off its winding or supply spool 4 into the tubular end 16 and emerges from the hollow spindle into thread reserve ring or disc 3 from passage 5. It is drawn by a draw-off or take-oif device (not shown) above the thread guide 8 and orbits in its path of travel in the thread balloon about the supply winding 4.
  • the thread balloon collapses inwardly against the support ring 9.
  • the support ring prevents damaging contraction of the balloon and damaging cross friction by rubbing of the collapsed balloon over the stationary spool and forms the base for a new, freely orbiting balloon segment 18 between the ring and the thread guide 8.
  • the difiiculties which occur in the known art during the processing of specially fine, synthetic threads, using oversized, copshaped supply windings, during the twisting thereof on double twist twisting machines are thread breaks caused by the thread touching the not moving parts of the spindle in the first stage of the development of a balloon, so that a freely orbiting balloon cannot develop.
  • Such difiiculties are, as confirmed by the tests for example with polypropylene threads of 30 denier or perlon threads of 15 denier and supply tubes or cops of 380 to 470 mm. casing length and approximately 3 or 4 kg. winding weight, safely avoided by the invention herein because of the inner support of the thread at an edge of the support ring rotating with the spindle in the critical contraction zone of the balloon.
  • the support ring en-" abling the renewed development of thread balloon segment 18.
  • a double twist twisting apparatus comprising a rotatable spindle having a thread reserve ring and a thread run-over body with a circular edge positioned concentrically on said spindle and rotatable therewith, an elongated thread supply winding immediately thereabove, and passage means extending axially through said winding for feeding thread from said winding to said thread reserve ring and then over said run-over body to a thread guide above said supply winding in the form of an orbiting thread balloon, the improvement comprising a thread support ring mounted concentrically on said spindle about said winding and rotatable with said spindle for preventing collapse of the orbiting thread balloon through touching said thread winding, the diameter of the outer edge of said thread support ring being at least equal to the diameter of said circular edge of said thread run-over body.
  • said last-mentioned means comprises length-adjustable support members extending between said thread support ring and said run-over body.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
US599439A 1965-12-13 1966-12-06 Double twist twisting apparatus and method Expired - Lifetime US3391529A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEB0084948 1965-12-13

Publications (1)

Publication Number Publication Date
US3391529A true US3391529A (en) 1968-07-09

Family

ID=6982679

Family Applications (1)

Application Number Title Priority Date Filing Date
US599439A Expired - Lifetime US3391529A (en) 1965-12-13 1966-12-06 Double twist twisting apparatus and method

Country Status (8)

Country Link
US (1) US3391529A (xx)
JP (1) JPS4926974B1 (xx)
CH (1) CH440063A (xx)
DE (1) DE1510545C3 (xx)
ES (1) ES334430A1 (xx)
FR (1) FR1504342A (xx)
GB (1) GB1146737A (xx)
NL (1) NL149867B (xx)

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE602419C (de) * 1934-09-08 Barmag Barmer Maschf Zwirnmaschine mit schraeg gestellten Doppeldrahtzwirnspindeln
GB682391A (en) * 1949-08-05 1952-11-12 North American Rayon Corp Improvements in double twist spindles
US2638732A (en) * 1949-06-09 1953-05-19 Sabaton Louis Double twist throwing spindle device
FR1062705A (fr) * 1952-09-04 1954-04-27 Rech S De Materiel Textiles So Perfectionnements apportés aux broches de filature, notamment aux broches de moulinage à double torsion
US2692471A (en) * 1949-10-12 1954-10-26 Landolt Karl Bearing for double-twist spindles
GB726944A (en) * 1951-07-28 1955-03-23 Walter Morawek Improvements in and relating to textile double twisting spindles
FR1109507A (fr) * 1954-07-28 1956-01-30 Rhodiaceta Procédé pour l'utilisation des broches à double torsion et dispositifs pour la mise en oeuvre de ce procédé
US2734333A (en) * 1956-02-14 griset
US3276197A (en) * 1963-03-22 1966-10-04 Palitex Project Co Gmbh Double twist spindle

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE602419C (de) * 1934-09-08 Barmag Barmer Maschf Zwirnmaschine mit schraeg gestellten Doppeldrahtzwirnspindeln
US2734333A (en) * 1956-02-14 griset
US2638732A (en) * 1949-06-09 1953-05-19 Sabaton Louis Double twist throwing spindle device
GB682391A (en) * 1949-08-05 1952-11-12 North American Rayon Corp Improvements in double twist spindles
US2692471A (en) * 1949-10-12 1954-10-26 Landolt Karl Bearing for double-twist spindles
GB726944A (en) * 1951-07-28 1955-03-23 Walter Morawek Improvements in and relating to textile double twisting spindles
FR1062705A (fr) * 1952-09-04 1954-04-27 Rech S De Materiel Textiles So Perfectionnements apportés aux broches de filature, notamment aux broches de moulinage à double torsion
FR1109507A (fr) * 1954-07-28 1956-01-30 Rhodiaceta Procédé pour l'utilisation des broches à double torsion et dispositifs pour la mise en oeuvre de ce procédé
US3276197A (en) * 1963-03-22 1966-10-04 Palitex Project Co Gmbh Double twist spindle

Also Published As

Publication number Publication date
NL149867B (nl) 1976-06-15
ES334430A1 (es) 1968-03-01
JPS4926974B1 (xx) 1974-07-13
CH440063A (de) 1967-07-15
NL6616384A (xx) 1967-06-14
GB1146737A (en) 1969-03-26
DE1510545A1 (de) 1970-04-09
DE1510545C3 (de) 1974-08-08
FR1504342A (fr) 1967-12-01
DE1510545B2 (de) 1974-01-10

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