US3667292A - Device for checking whether each of running yarns is twisted at the standard turns per minute - Google Patents

Device for checking whether each of running yarns is twisted at the standard turns per minute Download PDF

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Publication number
US3667292A
US3667292A US41959A US3667292DA US3667292A US 3667292 A US3667292 A US 3667292A US 41959 A US41959 A US 41959A US 3667292D A US3667292D A US 3667292DA US 3667292 A US3667292 A US 3667292A
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US
United States
Prior art keywords
yarn
shaft
disk
drive shaft
per minute
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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
US41959A
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English (en)
Inventor
Yukihiro Hada
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.)
Unitika Ltd
FUJIKEIKI KK
Original Assignee
Unitika Ltd
FUJIKEIKI KK
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Filing date
Publication date
Application filed by Unitika Ltd, FUJIKEIKI KK filed Critical Unitika Ltd
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    • 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
    • D02G1/0206—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 by false-twisting
    • D02G1/0266—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 by false-twisting false-twisting machines
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/36—Textiles
    • G01N33/365—Filiform textiles, e.g. yarns

Definitions

  • the device of the present invention is used for checking whether each of running yarns is twisted at the standard turns per minute.
  • This device comprises a driving shaft, a motor provided with a variable speed means and a yarn contact means.
  • the driving shaft is rotated at a rotating speed corresponding to the standard turns per minute, at which each of running yarns should be twisted.
  • the yarn contact means is imparted a torque from the shaft and running yarn, which is brought in contact with it.
  • the shaft and the yarn contact means carry marks which can be viewed with a stroboscope to determine whether the shaft and contact means are rotating at the same speed.
  • the spindle type has advantages in that the uniformity of crimp can readily be achieved between the products, because the speed of rotation of the spindle exactly controls the number of turns of the yarn per minute. Therefore, all of the yarns in this apparatus can be twisted at the same turns per minute by merely controlling the apparatus as to drive all of the spindles at the same speed of rotation.
  • the spindle type apparatus is open to disadvantage of low production.
  • the twisting device can be adjusted in a known way to produce a desired standard number of turns per minute of twist.
  • each of a set of twisting devices can be adjusted to produce uniform twist, and therefore uniform crimp, in a group of yarns running through the devices.
  • the object of this invention is to provide a device for checking the actual number of turns per minute of twist being imparted to a running yarn in false twisting device in comparison to a desired standard number of turns per minute.
  • the device comprises a driving shaft having a mark set thereon, a motor equipped with a speed regulating means and capable of driving said driving shaft at a speed of rotation which corresponds to the standard turns per minute of the yarn, and a yarn contact means having a mark set thereon and being a free running fit on said driving shah.
  • a change in related position between the two marks indicate a discrepancy between the speed of the yarn contact means and that of the driving shaft.
  • the rotating speed of the yarn contact means may be compared to that of the driving shaft by viewing the marks with a commonly used stroboscope.
  • the yarn contact means may be either a disk or a belt.
  • the belt runs over pulleys being a free running fit on the driving shaft. This type may be used where space lirnitations in the twisting apparatus would prevent the use of a disk.
  • the essential principle of the device of the present invention is that both of the driving shafi and yarn transmit their speeds of rotation to the yarn contact means which is a free running fit on the driving shaft so that the turns of the yarn per minute can be relatively checked by regulating the rotation of the driving shaft so as to obtain a synchronous rotation of the driving shaft and the yarn contact means.
  • FIG. 1 is a schematic view illustrating an apparatus for producing the crimped yarn by false twist technique, to which the device of the invention is applied;
  • the device of the invention is applied to the above described apparatus for checking whether each of the running yarns is being subjected to the false twisting operation at the standard turns per minute.
  • the disk 4 of the device is brought in frictional contact with the running yarn between the heater 8 and the member 9 with its periphery edge interrupting the imagenary plane in which lies the running yarn, said disk 4 having its axis disposed in parallel with the yarn Y.
  • the driving shafi 2 is rotated at a speed estimated to be equal to that which is to synchronize with the speed of the disk 4 when the disk engages with the running yarn.
  • the speed regulating means is then operated to change the speed of the driving shaft until a synchronous speed of rotation of the disk 4 and the driving shaft is found, while the periphery edge of the disk 4 is being kept in driven engagement with the running yarn.
  • EXAMPLE The device as shown in H6. 1 was used. The dimensions of the device were as follows.
  • FIG. 2 shows the variation in speed of the disk 4 according to the example.
  • FIG. 5 there is shown still another modification.
  • a belt 35 which is the yarn contact means, runs over pulleys 36 and 37 which are supported on shafts 38 and 39 respectively through ball bearings 40 and 41.
  • Shaft 39 is driven by the motor 42
  • the shaft 38 is rotated by the motor 42 through pulley 43, belt 44 and pulley 45.
  • This modification is conveniently used for checking in a narrow space in the twisting apparatus.
  • a device for checking the actual rate of twist of a running yarn in a false twisting device, as compared to a standard number of turns per minute, comprising: a motor, having a variable speed control capable of running said motor at a speed corresponding to said standard number of turns per minute; a drive shaft driven by said motor and carrying a mark; and a yarn contact device mounted in freely rotatable relationship with respect to said drive shaft, said contact device carrying a second mark, and said marks being viewable to indicate by change in their relative positions any discrepancy between the speeds of said drive shaft and yarn contact device.
  • said yarn contact means comprising a disk having a peripheral edge adapted to engage said yarn, and said drive shaft carrying a ball bearing on which said disk is mounted.
  • a device as described in claim 1 having a pair of pulleys mounted on said drive shaft, the device including a pair of belts, one driven by each of said pulleys, a second pair of pulleys, one driven by each of said belts, a second and third shaft driven by said second pair of pulleys, a pair of ball bearings one mounted on each of said second and third shafts, a fourth shaft mounted on said ball bearings and carrying a third ball bearing, and said yam contact device comprising a disk mounted on said third ball bearing.
  • a device as described in claim 1 including a first pulley mounted on said drive shaft, a first belt driven by said first pulley, a second shaft mounted parallel to said drive shaft and carrying a second pulley driven by said first belt, a first and second ball bearing mounted respectively on said drive shaft and second shaft, a third and fourth pulley mounted respectively on said first and second bearings, and said yarn contact device comprising a second belt mounted on said third and fourth pulleys.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Food Science & Technology (AREA)
  • Medicinal Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
US41959A 1969-06-03 1970-06-01 Device for checking whether each of running yarns is twisted at the standard turns per minute Expired - Lifetime US3667292A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4338769 1969-06-03

Publications (1)

Publication Number Publication Date
US3667292A true US3667292A (en) 1972-06-06

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US41959A Expired - Lifetime US3667292A (en) 1969-06-03 1970-06-01 Device for checking whether each of running yarns is twisted at the standard turns per minute

Country Status (6)

Country Link
US (1) US3667292A (de)
CH (1) CH511956A (de)
DE (1) DE2024874C3 (de)
FI (1) FI56284C (de)
FR (1) FR2049796A5 (de)
GB (1) GB1311157A (de)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3945181A (en) * 1973-08-11 1976-03-23 Toray Industries, Inc. Process and apparatus for measuring uniformity of physical properties of yarn
US4015414A (en) * 1974-06-12 1977-04-05 The Warner & Swasey Textile Machine Company Monitored twist control apparatus and method
US4050225A (en) * 1975-02-18 1977-09-27 Toyo Boseki Kabushiki Kaisha Process and apparatus for measuring false twist in thermoplastic synthetic yarn
FR2387305A1 (fr) * 1977-04-14 1978-11-10 Heberlein & Co Ag Dispositif pour determiner en cours de texturation par fausse torsion l'angle d'inclinaison de fils tordus
US4677819A (en) * 1985-03-22 1987-07-07 Hans Stahlecker Method and apparatus for operating an open-end friction spinning machine
US4888945A (en) * 1987-04-03 1989-12-26 Murata Kikai Kabushiki Kaisha Method for quality control of textured yarn
CN102296396A (zh) * 2010-06-25 2011-12-28 宁波德昌精密纺织机械有限公司 一种纱线扭结数的测量装置

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3063293A (en) * 1959-05-01 1962-11-13 Du Pont Method and apparatus for measuring twist
US3377853A (en) * 1966-05-27 1968-04-16 Fmc Corp Twist tester

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3063293A (en) * 1959-05-01 1962-11-13 Du Pont Method and apparatus for measuring twist
US3377853A (en) * 1966-05-27 1968-04-16 Fmc Corp Twist tester

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3945181A (en) * 1973-08-11 1976-03-23 Toray Industries, Inc. Process and apparatus for measuring uniformity of physical properties of yarn
US4015414A (en) * 1974-06-12 1977-04-05 The Warner & Swasey Textile Machine Company Monitored twist control apparatus and method
US4050225A (en) * 1975-02-18 1977-09-27 Toyo Boseki Kabushiki Kaisha Process and apparatus for measuring false twist in thermoplastic synthetic yarn
FR2387305A1 (fr) * 1977-04-14 1978-11-10 Heberlein & Co Ag Dispositif pour determiner en cours de texturation par fausse torsion l'angle d'inclinaison de fils tordus
US4148178A (en) * 1977-04-14 1979-04-10 Heberlein Maschinenfabrik Ag Devices for determining the helix angle of twisted threads during false-twist texturing
US4677819A (en) * 1985-03-22 1987-07-07 Hans Stahlecker Method and apparatus for operating an open-end friction spinning machine
US4888945A (en) * 1987-04-03 1989-12-26 Murata Kikai Kabushiki Kaisha Method for quality control of textured yarn
CN102296396A (zh) * 2010-06-25 2011-12-28 宁波德昌精密纺织机械有限公司 一种纱线扭结数的测量装置

Also Published As

Publication number Publication date
DE2024874B2 (de) 1974-03-14
FI56284C (fi) 1979-12-10
DE2024874C3 (de) 1974-11-07
DE2024874A1 (de) 1970-12-17
FR2049796A5 (de) 1971-03-26
CH511956A (fr) 1971-08-31
FI56284B (fi) 1979-08-31
GB1311157A (en) 1973-03-21

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