US3707269A - Filament tensioning apparatus - Google Patents

Filament tensioning apparatus Download PDF

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Publication number
US3707269A
US3707269A US41044A US3707269DA US3707269A US 3707269 A US3707269 A US 3707269A US 41044 A US41044 A US 41044A US 3707269D A US3707269D A US 3707269DA US 3707269 A US3707269 A US 3707269A
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US
United States
Prior art keywords
pulley
braking
lever
force
mounting
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
US41044A
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English (en)
Inventor
Marcel A M Gerest
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.)
Altic Sarl
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Altic Sarl
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Publication date
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H59/00—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators
    • B65H59/10—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators by devices acting on running material and not associated with supply or take-up devices
    • B65H59/16—Braked elements rotated by material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/30—Handled filamentary material
    • B65H2701/31—Textiles threads or artificial strands of filaments

Definitions

  • the braking [56] m Cited spring has an adjustable loading and the wire tension UNITED STATES PATENTS spring senses th e actual tension on a wire wound 1 around and frIct1onally engaged w1th the pulley In an 1,671,976 6/1928 Avery ..242/ 156.2 interdependent manner, 1,733,834 10/1929 Steele ..242[156.2 2,714,494 8/1955 wentz ..242/155 R 6 Claims, 2 Drawing Figures FILAMENT TENSIONING APPARATUS BACKGROUND OF THE INVENTION 1.
  • the present invention relates to an automatic device for regulating wire or thread .tension during reeling and unreeling in winding, spooling, reeling or unreeling machines, twisting frames and generally in all appliances wherein it is necessary to ensure the constant tension of a predetermined value on a thread or wire while passing through said device.
  • the invention concerns, in particular, braking arrangements for automatic wire tension regulators which operate during winding and unwinding andcomprise a wire-tensioning device and adevice measuring the resulting tension, the two-mechanisms inter-reacting continuously and progressively in such manner as to maintain the tension of the wire at a prescribed value;
  • These devices comprise, in particular, a drum or pulley to which a wire to be handled is frictionally connected and to which a resisting-torque is applied by two plates or discs, the one rotating and the other fixedj
  • the plates are made of suitable materials and forced against each other by a load, the value of which depends on the action of a dynamometric device continuously measuring the tension at which the wire is delivered from the appliance.
  • One feature of the prior art devices is that there is no reciprocal reaction between the resisting torque and.
  • a second force is also applied to the lever mechanism.
  • the second force is generated by a dynamometric system comprising a second spring and said second force acts in the opposite direction to said first force.
  • the second force varies with the tension of the wire to be handled. Variations in the magnitude of the second force are transmitted tothe braking system in such a manner that the braking system is actuated to 0 reset the wire tension to its required initial value.
  • the present invention relates to an automatic device for regulating the tension of one or more wires to allow reeling or unreeling to proceed under constant tension.
  • the invention is characterized by a braking device with a fixed plate or disc having an extensive heat-dissipating surface, and a rotating pulley on which one or more wires to be tensioned are frictionally engaged.
  • the pulley has a braking surface in contact with one of the surfaces of the fixed plate, and the braking surface of the rotating pulley is applied against the fixed plate with a pressure depending on the required tension of such wire or wires.
  • the pressure applied by the rotating pulley to the fixed plate is furnished by a lever mechanism to which a first or braking force is applied.
  • the first force is generated by means including an adjustable braking throughout the several figures.
  • FIG. 1 shows a sectional view of the braking device of the automatic regulating system for tensioning a wire in accordance with the present invention
  • FIG. 2 shows a portion of a wire tension sensing means and a balancing mechanism for use with the tensioning device of the invention.
  • the braking arrangement comprises a fixed plate or disc 21 which is in heattransmitting contact with a frame or bedplate 54.
  • the bedplate 54 has a surface area of considerable size and sufficient volume to act as a support for-the mechanical assembly and as a heat dissipator as will be described in detail below.
  • the fixed plate 21 is in contact with a brake lining 20 under an adjustable pressure.
  • the lining 20 is itself carried on a rotating pulley 19 on which one or more wires are wound in frictional engagement therewith, in order to maintain the wires under the required tension.
  • a resisting torque is obtained on the pulley by pressing the assembly of the rotating pulley l9 and the brake lining 20 against the fixed plate 21.
  • This arrangement of the elements in the braking system having the shape of plates or discs is particularly advantageous since it prevents any reaction of the braked element on the elements controlling the braking power.
  • the frame or bedplate 54 serves as a radiator and thus ensures good dissipation of the heat produced by braking.
  • the brake lining or pad 20 which may be of any suitable material, such as leather, felt or plastic, is attached to the pulley 19 by rivets, cement or snaprings or in any 3 other suitable manner.
  • the pulley 19 is mounted to a spindle housed in the brake block by means of a needle bearing 55.
  • the pulley l9 and brake lining 20 are pressed against the brake block by means of a ball bearto a single pivotal lever, on the one hand by a braking spring 39, and on the other hand by the dynamometer associated with the spring 39, and furnishing suitable dynamic characteristics of the resisting torque through suitable choice and location of the said spring.
  • the invention can be applied to any machine for unreeling twisting,'preparing electric windings and, in
  • the'adjustable brake spring 39 operated by a tensioning device indicated generally at 59 exerts a desired force on the bellcrank lever 34 through the pivotal balancing lever 52, to which is also attached dynamomet'ric spring 30, providing by means of adequate selection of points of attachment on the lever.52 a suitable balancing of the forces in action, and 1 allowing suitable dimensioning of the springs.
  • a force proportional to the wire tension is applied to the spring from a thread tension sensor 60 connected to the upper end of spring 30.
  • a typical wire tension senpatents comprises a jack" mechanism having a pair of angularly related arms; the mechanism being pivotable about the junction of the arms.
  • Such a mechanism is indicated by reference numerals 27, 28 and 29 of French Pat. No. 1,241,232.
  • the point of attachment of the spring 30 to one of the arms is adjustable, in the French patent'by means of mechanism'3l, and the end of the opposite arm is provided with'an idler pulley.
  • the wire being handled is passed over the idler pulley and thedesired tension is set by adjusting the point of connection between spring 30 and the opposite arm of the pivotal jack assembly.
  • lever 52 pivots about axis or pivot point 58 and bears-against the horizontal arm of bell crank lever 34'by means of steel pins or projections 65.
  • the braking force exerted by spring 39 depends upon the spring tension which can be regulated by means of a knob 66 via a toggle lever 67.
  • a second force opposite to the braking'force is applied to lever 52 by means of spring 30. The magnitude of this second force is dependent upon the value selected for the wire tension; i.e., the
  • a compensating spring53 is further-provided, attached to the lever 52, which allows the regulating range to be increased by balancing the gravitational loads oi weights of the several elements 'sor of the type described in the aforementioned French of such threads or wires, as for instance, a combination of threads or wires of different kinds.
  • Apparatus for automatically regulating the tension of a filament being wound on a rotatable reel compris- I being in heat dissipating contact with said frame means; adjustable means for generating a braking force; means resiliently coupling said braking force generating means to said mounting means for causing axial motion of said pulley with respect to said frame means whereby a'preselected degree of frictional contact between said braking element and pulley braking surface may be established, said resilient coupling means including: force balancing lever means,said lever meansrineluding an elongated lever having a pivot point and a first point displaced along said lever between said pivot point and a first end of said lever, said first point being mechanically coupled to said mounting means; and
  • a v 4 The apparatus of claim 1 wherein saidv mounting means comprises: 1
  • bell crank means mounted for rotation on said frame means, a first arm of said bell crank means being mechanically coupled to said force balancing lever means;- tubular axle means extending from said frame means; means mounting said pulley means for rotation about and along said axle means; connecting rod means mechanically coupled to the second arm of said bell crank means and extending coaxially of said axle means, said connecting rod means being movable axially of said pulley means; and means mechanically coupling said connecting rod means to said pulley means whereby rotation of said bell crank means will cause axial movement of said pulley means thereby varying the operative mechanically coupled to said force balancing lever means;
  • tubular axle means extending from said frame means
  • connecting rod means mechanically coupled to the second arm of said bell crank means and extending coaxially of said axle means, said connecting rod means beingmovable axially of said pulley means;
  • means further comprises:
  • brake lining means mounted on said pulley braking surface.

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  • Tension Adjustment In Filamentary Materials (AREA)
US41044A 1969-05-28 1970-05-27 Filament tensioning apparatus Expired - Lifetime US3707269A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR6917286A FR2041676A5 (zh) 1969-05-28 1969-05-28

Publications (1)

Publication Number Publication Date
US3707269A true US3707269A (en) 1972-12-26

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ID=9034665

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Application Number Title Priority Date Filing Date
US41044A Expired - Lifetime US3707269A (en) 1969-05-28 1970-05-27 Filament tensioning apparatus

Country Status (5)

Country Link
US (1) US3707269A (zh)
CH (1) CH515841A (zh)
DE (1) DE2025887A1 (zh)
FR (1) FR2041676A5 (zh)
GB (1) GB1317042A (zh)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4570874A (en) * 1983-10-11 1986-02-18 Tanac Engineering Kabushiki Kaisha Tensioning device for coil winding machine
US4913374A (en) * 1987-06-05 1990-04-03 Altic S.A.R.L. Paying out device

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2318884C2 (de) * 1973-04-14 1982-02-25 Eugen Beyer, Elektrotechnische Fabrik, 7100 Heilbronn Vorrichtung zum Konstanthalten des Drahtzuges bei Wickelmaschinen
JPS6039622B2 (ja) * 1978-12-22 1985-09-06 株式会社日立製作所 巻線機における電線の張力制御装置
DE2949183C2 (de) * 1979-12-06 1981-11-26 Bucher + Ott, Thalwil Bremsvorrichtung an einer Spulenwickelmaschine
DE3336970A1 (de) * 1983-10-07 1985-04-18 Siemens AG, 1000 Berlin und 8000 München Verfahren zur gesteuerten erzeugung einer drahtzugspannung
DE3936558C2 (de) * 1989-10-31 1993-12-02 Siemens Ag Drahtzugregeleinrichtung für Wickelmaschinen
DE4014759A1 (de) * 1990-05-08 1991-11-14 Adalbert Guggemos Vorrichtung zum fortlaufenden spannen irgendwelcher faeden oder dergleichen

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1671976A (en) * 1924-04-28 1928-06-05 Western Electric Co Strand-tension-control mechanism
US1733834A (en) * 1926-11-20 1929-10-29 Gen Electric Tensioning device
US2714494A (en) * 1953-09-23 1955-08-02 Specialties Dev Corp Yarn tension compensating device
US2896435A (en) * 1956-08-06 1959-07-28 Manor Hosiery Mills Inc Yarn tensioning device for circular knitting machine
FR1241232A (fr) * 1959-08-04 1960-09-16 Altic Dispositif auto-régleur de la tension du fil pendant le dévidage-bobinage
US2983468A (en) * 1959-12-22 1961-05-09 Clix Fastener Corp Strand tension control device
US3023979A (en) * 1956-05-19 1962-03-06 Philips Corp Device for endwise unwinding of delivery reels
US3412948A (en) * 1965-08-31 1968-11-26 Universal Mfg Company Inc Toroidal coil winding machine wire guide

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1671976A (en) * 1924-04-28 1928-06-05 Western Electric Co Strand-tension-control mechanism
US1733834A (en) * 1926-11-20 1929-10-29 Gen Electric Tensioning device
US2714494A (en) * 1953-09-23 1955-08-02 Specialties Dev Corp Yarn tension compensating device
US3023979A (en) * 1956-05-19 1962-03-06 Philips Corp Device for endwise unwinding of delivery reels
US2896435A (en) * 1956-08-06 1959-07-28 Manor Hosiery Mills Inc Yarn tensioning device for circular knitting machine
FR1241232A (fr) * 1959-08-04 1960-09-16 Altic Dispositif auto-régleur de la tension du fil pendant le dévidage-bobinage
US2983468A (en) * 1959-12-22 1961-05-09 Clix Fastener Corp Strand tension control device
US3412948A (en) * 1965-08-31 1968-11-26 Universal Mfg Company Inc Toroidal coil winding machine wire guide

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4570874A (en) * 1983-10-11 1986-02-18 Tanac Engineering Kabushiki Kaisha Tensioning device for coil winding machine
US4913374A (en) * 1987-06-05 1990-04-03 Altic S.A.R.L. Paying out device

Also Published As

Publication number Publication date
GB1317042A (en) 1973-05-16
FR2041676A5 (zh) 1971-01-29
CH515841A (fr) 1971-11-30
DE2025887A1 (de) 1971-03-11

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