US3668853A - Friction crimping of synthetic threads - Google Patents

Friction crimping of synthetic threads Download PDF

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Publication number
US3668853A
US3668853A US47685A US3668853DA US3668853A US 3668853 A US3668853 A US 3668853A US 47685 A US47685 A US 47685A US 3668853D A US3668853D A US 3668853DA US 3668853 A US3668853 A US 3668853A
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US
United States
Prior art keywords
friction
thread
discs
improvement
receiving groove
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
US47685A
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English (en)
Inventor
Otto Lang
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.)
IHO Holding GmbH and Co KG
Original Assignee
Kugelfischer Georg Schaefer and Co
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
Priority claimed from DE19691931207 external-priority patent/DE1931207C/de
Application filed by Kugelfischer Georg Schaefer and Co filed Critical Kugelfischer Georg Schaefer and Co
Application granted granted Critical
Publication of US3668853A publication Critical patent/US3668853A/en
Assigned to FAG KUGELFISCHER GEORG SCHAFER KOMMANDITGESELLSCHAFT AUF AKTIEN (KGAA) reassignment FAG KUGELFISCHER GEORG SCHAFER KOMMANDITGESELLSCHAFT AUF AKTIEN (KGAA) CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). JUNE 30, 1983 Assignors: FAG KUGELFISCHER GEORG SCHAFER & CO.
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G1/00—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics
    • D02G1/02—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics by twisting, fixing the twist and backtwisting, i.e. by imparting false twist
    • D02G1/04—Devices for imparting false twist
    • D02G1/08—Rollers or other friction causing elements
    • D02G1/082—Rollers or other friction causing elements with the periphery of at least one disc

Definitions

  • Crimping methods of this kind for the purpose of producing a false twist are broadly known. They have hitherto been put into practice with the aid of various devices, and especially with the aid of rotating discs.
  • the periphery of the disc is generally covered with a material which, like polyurethane for example, has a high coefficient of friction.
  • the rotatable discs have been driven from an external source of power. This requires a separate motor, making the arrangements in question expensive and liable to various faults.
  • At least one thread-receiving grooved pulley is mounted on each side of that disc which receives the incoming thread.
  • the groove provided in the thread entry pulley serves to guide the thread while the other provides the drive for the rotating disc.
  • an additional groove can be provided between those discs which are present to act on the moving thread. This additional groove is then arranged to perform the thread entry either sequentially over all the discs present or only over those two which come last in the path of travel of the thread.
  • each of the two rotatable discs or pairs of discs effecting a frictional action on the thread in direct succession has associated with it a set of grooves of like formation comprising at least two grooves of different diameters.
  • This allows the speed of rotation imposed by the crimped thread on the rotatable discs to be varied in steps so as to match the degree of crimping.
  • This is further possible in a variable manner if, likewise according to the present invention, a releasable connection is provided between the sets of grooves and the friction discs.
  • an adjustable thread guide on the axis of at least one of the rotatable discs makes it possible, according to this invention, to guide the thread to be crimped easily into that groove track which has been selected to give the desired ratio. Moreover, through this adjustability, the necessary guiding and engagement of the thread to be crimped as it passes through the apparatus can be made to suit the quality or nature of the friction surfaces provided on the friction discs.
  • FIG. I shows a side elevation of an arrangement in which the crimping is achieved with the aid of two friction discs which rotate on separate axes and of which each disc has an associated set of grooves of like form made up of a number of grooves of different diameters in the manner set out above.
  • the guiding of the thread through the apparatus can be arranged either to obtain a twist in the S direction as shown in FIG. 2 or in the Z direction as shown in FIG. 3.
  • FIGS. 4 to 6 show in side elevation and in a perspective view embodiments with altogether at least three friction discs, and finally, in FIG. 7 there is illustrated a perspective view of a construction by which it is possible to crimp two threads of opposite twist simultaneously, as set out above.
  • spindles 2 and 3 are rigidly mounted on the common baseplate 1.
  • Friction discs 4 and 5 are mounted to be freely rotatable on the spindles, the disc 4 being connected rigidly to the pulley 6 with the entry groove and to the pulley 7 with a set of grooves.
  • the disc 5 has secured to it the pulley 8 with a set of grooves which is identical in its construction to the pulley 7.
  • the thread guide 9 is adjustably mounted on the free end of the spindle 3.
  • the synthetic thread 10 to be crimped runs in the entry groove in the pulley 6, provided for the sole purpose of guiding it, and is then led by the eye 11 of the thread guide 9 to the friction surfaces of the discs 4 and 5 either in the path shown in FIG. 2 to give it an Stwist or in the path shown in FIG. 3 to produce a Z-twist.
  • the thread passes round the groove 12 of the pulley 8 to lead either into the intermediate portion 10' (FIG. 2) or into the intermediate portion I0" (FIG. 3).
  • the friction disc 5 is rotated by the passage of the moving thread I0 around the groove 12 of the pulley 8.
  • the friction disc 4 is driven by the moving thread as it passes round the groove 13 of the pulley 7. After leaving the groove 13 of the pulley 7 the thread is guided in a free tangential path into the groove 12 of the row 8 in the direction of the arrow shown, whereupon it then emerges from the friction disc assembly.
  • spindles 17 to 22 are rigidly secured on baseplates 14 to 16.
  • Friction discs 23 to 32 are mounted to be freely rotatable on the spindles.
  • the discs 23 and 24, 26 and 27, 29 and 30, and 31 and 32 are secured together in pairs, respectively.
  • the entry pulleys 33, 35, 37 or 37' and the driving pulleys 34, 36 and 38 are attached securely to the discs.
  • the discs 25, 28 and the pairs of discs 31, 32 are secured to the driving pulleys 45, 46 and 47.
  • the thread 39, 40 or 41 to be crimped passes over the entry pulley 33, 35, 37 or 37 to the thread guide 42, 43 or 44 and is thus brought into contact with the friction surfaces of the discs 23, 25 and 24 or 26, 28 and 27 or 29, 31, 30 and 32, or simply with the discs 30 and 32.
  • the thread to be crimped first passes around the driving pulley 45, 46 or 47 and then the driving pulley 34, 36 or 38, thus rotating the discs.
  • the thread is lightly guided by the pulley 45, 46 and 47 as it leaves the crimping apparatus in the direction of the arrow as shown.
  • the length of thread exposed to frictional engagement can be reduced if desired by loading the thread 4I' into the entry pulley 37.
  • the friction discs 29 and 31 and the pulley 37 then have no function.
  • the two spindles 49 and 50 are rigidly mounted on the baseplate 48.
  • the pair of friction discs 51, 52 is rotatably mounted on the spindle 49 and has the pulleys 54 and 55 with sets of grooves rigidly secured to it on both sides of the pair.
  • the friction disc 53 is freely rotatable on the spindle 50 and has pulleys 56 and 57 secured to it.
  • the thread 60 passes from an entry groove of the pulley 54 to the eye 62 of the thread guide 59 and is thereby brought into engagement with the friction discs 51, 53 and 52.
  • the thread 61 passes through the entry groove of the pulley 55 to the eye 63 of the thread guide 58 and is thereby brought into engagement with the friction discs 51, 52 and 53.
  • the thread 61 is not required to drive the crimping apparatus, it leaves the friction disc assembly in the direction of the arrow as shown, coming from the eye 63 and being loosely guided by the pulley groove 56.
  • each friction element is provided with a set of axially spaced annular drive grooves having different inner diameters, the two sets of grooves being identical.
  • each set of grooves is releasably connected to an associated friction element.
  • the two friction elements are each provided with at least two axially spaced friction discs connected with one another, at least one of the two friction elements being provided with at least one further annular thread-receiving groove axially spaced with respect to the first annular thread-receiving groove.
  • each friction disc is provided with a friction surface consisting of polyurethane.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Decoration Of Textiles (AREA)
US47685A 1969-06-20 1970-06-19 Friction crimping of synthetic threads Expired - Lifetime US3668853A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19691931207 DE1931207C (de) 1969-06-20 Falschdrallvorrichtung

Publications (1)

Publication Number Publication Date
US3668853A true US3668853A (en) 1972-06-13

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
US47685A Expired - Lifetime US3668853A (en) 1969-06-20 1970-06-19 Friction crimping of synthetic threads

Country Status (7)

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US (1) US3668853A (en))
BE (1) BE752164A (en))
BR (1) BR7019900D0 (en))
CH (2) CH700270A4 (en))
ES (1) ES380043A1 (en))
FR (1) FR2046937B1 (en))
GB (1) GB1255317A (en))

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3782088A (en) * 1971-08-05 1974-01-01 Courtaulds North America Inc False twister
US3828541A (en) * 1972-05-03 1974-08-13 Heberlein & Co Ag Friction false-twist device
US4209847A (en) * 1977-12-22 1980-06-24 Toyoda Koki Kabushiki Kaisha Computerized numerical controller for a machine apparatus
US20130026673A1 (en) * 2011-04-15 2013-01-31 Thomas Michael R Continuous curing and post-curing method

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2410419A (en) * 1943-08-19 1946-11-05 Du Pont Snubber roller
US3094834A (en) * 1959-07-03 1963-06-25 British Nylon Spinners Ltd Apparatus for simultaneously stretching and falsetwisting yarn
US3161706A (en) * 1961-09-28 1964-12-15 Polythane Corp Method and apparatus for wet spinning elastomeric polymers into a fused multifilament fiber
US3495390A (en) * 1968-06-20 1970-02-17 Stevens & Co Inc J P False twisting method and apparatus
US3522698A (en) * 1967-06-15 1970-08-04 Courtaulds Ltd Apparatus for the treatment of freshly spun spandex thread
US3535866A (en) * 1968-02-29 1970-10-27 Nippon Rayon Kk Process and apparatus for producing crimped yarns
US3559391A (en) * 1968-06-28 1971-02-02 American Enka Corp Production of torque yarn

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2410419A (en) * 1943-08-19 1946-11-05 Du Pont Snubber roller
US3094834A (en) * 1959-07-03 1963-06-25 British Nylon Spinners Ltd Apparatus for simultaneously stretching and falsetwisting yarn
US3161706A (en) * 1961-09-28 1964-12-15 Polythane Corp Method and apparatus for wet spinning elastomeric polymers into a fused multifilament fiber
US3522698A (en) * 1967-06-15 1970-08-04 Courtaulds Ltd Apparatus for the treatment of freshly spun spandex thread
US3535866A (en) * 1968-02-29 1970-10-27 Nippon Rayon Kk Process and apparatus for producing crimped yarns
US3495390A (en) * 1968-06-20 1970-02-17 Stevens & Co Inc J P False twisting method and apparatus
US3559391A (en) * 1968-06-28 1971-02-02 American Enka Corp Production of torque yarn

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3782088A (en) * 1971-08-05 1974-01-01 Courtaulds North America Inc False twister
US3828541A (en) * 1972-05-03 1974-08-13 Heberlein & Co Ag Friction false-twist device
US4209847A (en) * 1977-12-22 1980-06-24 Toyoda Koki Kabushiki Kaisha Computerized numerical controller for a machine apparatus
US20130026673A1 (en) * 2011-04-15 2013-01-31 Thomas Michael R Continuous curing and post-curing method
US8580175B2 (en) * 2011-04-15 2013-11-12 Michael R. Thomas Continuous curing and post-curing method
US20140070450A1 (en) * 2011-04-15 2014-03-13 Michael R. Thomas Continuous curing and post-curing method
US9162402B2 (en) * 2011-04-15 2015-10-20 Michael R. Thomas Continuous curing and post-curing method

Also Published As

Publication number Publication date
BR7019900D0 (pt) 1973-01-11
BE752164A (fr) 1970-12-01
ES380043A1 (es) 1973-04-16
GB1255317A (en) 1971-12-01
CH525296A (de) 1972-03-30
FR2046937B1 (en)) 1973-01-12
FR2046937A1 (en)) 1971-03-12
SU365072A3 (en)) 1972-12-28
CH700270A4 (en)) 1972-03-30
DE1931207A1 (de) 1971-01-14

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Legal Events

Date Code Title Description
AS Assignment

Owner name: FAG KUGELFISCHER GEORG SCHAFER KOMMANDITGESELLSCHA

Free format text: CHANGE OF NAME;ASSIGNOR:FAG KUGELFISCHER GEORG SCHAFER & CO.;REEL/FRAME:004182/0129

Effective date: 19830826