US3451205A - Apparatus and method for unwinding a filamentary material - Google Patents

Apparatus and method for unwinding a filamentary material Download PDF

Info

Publication number
US3451205A
US3451205A US678243A US3451205DA US3451205A US 3451205 A US3451205 A US 3451205A US 678243 A US678243 A US 678243A US 3451205D A US3451205D A US 3451205DA US 3451205 A US3451205 A US 3451205A
Authority
US
United States
Prior art keywords
reel
wire
guide
axis
unwinding
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
US678243A
Other languages
English (en)
Inventor
George William Toomey
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.)
Electrothermal Engineering Ltd
Original Assignee
Electrothermal Engineering Ltd
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 Electrothermal Engineering Ltd filed Critical Electrothermal Engineering Ltd
Application granted granted Critical
Publication of US3451205A publication Critical patent/US3451205A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • B65H59/02—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators by regulating delivery of material from supply package
    • B65H59/06—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators by regulating delivery of material from supply package by devices acting on material leaving the package
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C47/00—Winding-up, coiling or winding-off metal wire, metal band or other flexible metal material characterised by features relevant to metal processing only
    • B21C47/34—Feeding or guiding devices not specially adapted to a particular type of apparatus
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C47/00—Winding-up, coiling or winding-off metal wire, metal band or other flexible metal material characterised by features relevant to metal processing only
    • B21C47/34—Feeding or guiding devices not specially adapted to a particular type of apparatus
    • B21C47/345—Feeding or guiding devices not specially adapted to a particular type of apparatus for monitoring the tension or advance of the material
    • 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
    • D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
    • D02G3/22—Yarns or threads characterised by constructional features, e.g. blending, filament/fibre
    • D02G3/26—Yarns or threads characterised by constructional features, e.g. blending, filament/fibre with characteristics dependent on the amount or direction of twist
    • D02G3/28—Doubled, plied, or cabled threads
    • D02G3/283—Doubled, plied, or cabled threads using hollow spindles through which one yarn is running

Definitions

  • An apparatus for unwinding a filamentary material from a reel of the material which comprises, disposed coaxially with the reel, a rotationally balanced member rotatable relatively to the reel and resiliently carrying, at a radial extremity of the member, guide means for guiding the material after it has left the reel, and a smoothly convex guiding surface continuous about the axis of the reel and disposed between said member and the reel to maintain the material free of the reel rims.
  • This invention relates to apparatus for and a method of unwinding wire or other filamentary maerial, and is applicable, for example, to the unwinding of wire from a reel and thereafter spiralling the wire about an insulating core and also to the unwinding of a wire from a reel and the rewinding of that wire onto a further reel, a bobbin or a coil former.
  • an apparatus for unwinding fila mentary material from a reel of the material comprising a rotationally balanced member mounted for rotation about the axis of and relatively to said reel, and guide means carried by said member for guiding said material from said reel whilst conveying it about said axis relatively to said reel, and wherein the improvement comprises a guide having a smooth convex guiding surface continuous about said axis and disposed to maintain said material free of the rims of said reel as said material travels from the reel along a smoothly curved path which, as considered in the axial direction of said reel, extends past said guiding surface to and beyond the guide means.
  • a method of unwinding filamentary material from a reel comprising the step of drawing the material from the reel to guide means carried by a rotationally balanced member caused to rotate about the axis of and relatively to said reel by the force applied to the guide means by the drawing of the material, wherein the improvement comprises guiding the said material along a smoothly curved path to and beyond said guide means past a smooth convex guiding surface which is continuous about said axis and which is disposed at a region axially between said material on said reel and said guide means to maintain said material free of the rims of said reel.
  • said rotatable member prefferably be flexible at least to such an extent that the free end of its arm can be rotated easily by hand, in a plane parallel to the axis and at right angles to the direction in which the arm extends when not flexed, to produce a circular movement of said arm of at least one-half an inch radius at a point approximately 3 /2 inches from the axis and without permanent deformation. If one wishes to use a rotatable member having a total radius of less than 3 /2 inches, then this relationship of dimensions must be scaled down accordingly.
  • the radius at which the guide means will guide wire is no less than a radius substantially equal to the maximum radius at which said guiding surface exists.
  • the curvature of the guiding surface is preferably such that an imaginary circle of radius no less than one-eighth of an inch, and advantageously no less than one-quarter of an inch, can be positioned tangentially at any point or region at the concave side of a curve having the axial cross-sectional form of the guiding surface.
  • the guiding surface has a,convex extent, as considered in a direction in any plane containing the said axis, of at least one-quarter of an inch and advantageous of at least one-half of an inch.
  • the guide means is advantageously a wire loop or eyelet so that the guided wire is positively prevented from becoming free of the arm during operation and so that the air resistance of the rotatable member can be made as small as possible.
  • the lower the air resistance the higher the speed that can be obtained without wire breakage.
  • FIGURE 1 is a diagram of a machine for producing a coiled-Wire conductor suitable for electric blankets
  • FIGURE 2 is a plan view of the unwinding apparatus used in the machine of FIGURE 1;
  • FIGURE 3 is a cross-section on the AA of FIG- URE 2;
  • FIGURE 4 is a diagram of a machine for winding wire from one reel onto a further reel.
  • FIGURE is a diagram of a further form of machine for forming coiled-wire conductors.
  • FIGURE 1 is a diagram of a machine for producing a coiled-wire conductor 1 consisting of a core 2 of nonconductive thread on which is coiled a conductor 3 of, for example, nickel chrome wire, copper nickel wire, Phosphor-bronze wire, cadmium copper wire or pure nickel wire of cross-sectional area at least as small as that of 28 SWG Wire.
  • the wire 3 is coiled on the core 2 with, for exam le, 30 threads per inch, and this number can be varied with the illustrated apparatus.
  • the core 2 extends from a reel 4 through a passage extending through the installation and runs several times over two sets of six pulleys 5 and 6 and then onto a finishedproduct reel 7.
  • the reel 7 is driven from an electric motor 8 through a pulley 9 to pull the core 2 from its reel 4.
  • the wire 3 is taken from a reel 10, in this case a B.S.C. 15 reel with a rim diameter of approximately 3% inches and a height of approximately 3% inches.
  • the wire 3 extends from the reel 10 past the smoothly convex guiding surface, continuous about the axis of the reel, of a guide 11 of hard wearing low friction material such as may be found among synthetic resins, for example a polyamide impregnated with an appropriate lubricant.
  • the wire 3 extends from the guiding surface of the guide 11 through an eyelet 12 carried at the free end of an arm 13 of a rotationally balanced member 14 mounted for rotation with respect to a stub shaft 15 driven with the reel 10 and the guide 11.
  • the wire 3 extends from the eyelet 12 to the upper surface of a domeshaped portion 16 through an aperture in which the core 2 extends to the set of rollers 5.
  • the reel 10, the guide 11 and the stub shaft 15 are rotated at at least 5,000 r.p.m. whilst the core 2 is driven therethrough at, say, four and a half yards per minute, the result being that the wire 3, whilst being drawn upwardly with the core 2, is spun around the core 2 and thus forms a wire spiral thereon.
  • the member 14 also rotates but at a speed slightly slower than that of the reel, say one or two r.p.m. slower, as is necessary to cause unwinding of the wire 3 from the reel 8. At these high speeds the arm 13 flexes considerably but without permanent deformation and without wire breakage.
  • the reel 10, the guide 11 and the stub shaft 15 are driven by a motor 17 through a pulley system 18 and a hollow spindle 19, the spindle 19 being rotationally supported by a bearing 20 carried by the frame 21 of the machine.
  • the spindle 19 is secured to the stub shaft 15 to clamp the guide 11 and reel 10 between the stub shaft and a flange 22 secured to the spindle shaft 19.
  • the coiled-wire conductor produced by such an installation is advantageously used for electric blankets, but whatever its intended use it is normally highly desirable for the resistance per unit length of the resultant conductor to be constant.
  • a first contact 23 is attached to the first pulley of the set of six pulleys 5 and a second contact 24 to the last pulley of the set of six pulleys 6 whereby there will always exist between the contacts a constant length, for example three yards, of the coiled conductor.
  • a servomechanism system 25 is provided to sense the resistance between these contacts continuously and to eifect appropriate control of the speed of the motor 8 and thus of the core 2 to maintain this resistance constant.
  • the apparatus consisting of the parts 11, 12, 13, 14, 15 and 16 will now be described in more detail with reference to FIGURES 2 and 3.
  • the member 11 of a lubricant-impregnated poylamide contains a circular shaped recess 26, to receive the rim of the reel 10, and also contains a central bore 27 through which the core 2 is to extend.
  • the smoothly convex effective guiding surface of the guide 11 is indicated by a heavy line at 28. It will be seen that the guide 11 prevents the wire 3 from coming into contact with the reel rim.
  • the length of the line 28 is approximately three quarters of an inch and the line has a curvature such that a circle of one inch radius can rest tangentially at the concave side of the line
  • the stub shaft 15, which is of metal, is bored out at 29 to accept the hollow spindle shaft 19 (FIGURE 1) by which the apparatus is'to be driven to rotate in either direction, and to which spindle shaft the stub shaft is secured by a screw 30.
  • the stub shaft also contains a bore 31 through which the core 2 will extend.
  • the dome portion 16 is provided at the upper free end of the stub shaft 15 and may be made integral with or separate from the stub shaft 15.
  • the stub shaft 15 will be clamped by means of the aforesaid spindle shaft 19 to the member 11 and to the reel 10 to rotate therewith.
  • the hollow spindle shaft 19 through which the core will extend is passed through the reel until the reel rests on the flange 22 secured to the shaft 19.
  • a first nut is then threaded on the spindle shaft to clamp the reel between the nut and the flange.
  • the spindle shaft is then passed through the guide 11 and is secured in the recess 29 of the stub shaft 15 so as to clamp the guide 11 between the reel and the shaft 15.
  • the member 14 is freely rotatably mounted on the stub shaft 15 by means of a bush 32, of a light material such as a synthetic resin e.g. a polyamide, located between a retaining collar 33 secured to the stub shaft 15 and a washer 34 urged against the lower side of the bush 32 by a spring 35.
  • the arms 13, of stainless steel wire, spring steel or other high tensile material, are embedded in and extend from the bush 32 and carry at their free ends, in wire loops, eyelets 12 of a hard wearing ceramic, such as Sintox.
  • the eyelet 12 is at that side of a plane at right angles to the axis and cutting the guiding surface 28 remote from the reel and because the guiding surface can maintain the wire away from the reel rims, the wire maintains a smoothly curved path from the reel to well beyond the eyelet. There are thus no sharp changes of direction in the path such as might limit the operating speed.
  • a suitable apparatus depend to some extent upon the dimensions of the reel 10 which is to be used and upon the size of Wire to be unwound. Furthermore it is to be noted that this apparatus can be used with its axis vertical, horizontal or with any other orientation. It will also be apparent that other alterations can be made, for example the bush 32 can be held spaced from the guide 11 by a spacer rather than by a spring. In addition a wire loop at the ends of the arms 13 may be all that is necessary to guide the wire in some applications. In some cases, when the wire to be unwound is relatively thick and the speed of rotation is accordingly lower than that given above for the specific example, a guide wheel may be provided at the free end of each arm as guide means for the wire.
  • the air resistance provided by such a wheel may in such a case not be an important consideration.
  • materials other than those already specified are suitable, such as wood or metal for the guide 11.
  • the member 14 can have any number of arms as long as it is substantially balanced about its axis.
  • FIGURE 4 shows a further application of the apparatus of FIGURES 2 and 3.
  • wire is unwound from the reel 10, which is held stationary together with the guide 11 and the stub shaft 15, whilst the wire is drawn from the reel over the guide 11, through the eyelet 12 to an axially arranged pulley 36 padded with felt 37.
  • the wire 3 extends from the pulley 36 over pulleys 38 and 39 to a further reel 40 on which the wire is rewound.
  • the pulleys 38 and 39 are mounted on an arm 41 which is pivotally mounted and spring biased to the position illustrated.
  • the wire 3 will be drawn from the reel 10 by the pull on the wire caused by rotation of the reel 40, thereby producing rotation of the member 14 to unwind the wire.
  • the wire can be unwound rapidly, with the member 14 rotated at 5,000 rpm. or more without wire breakage.
  • FIGURE 5 shows a modification of FIGURE 1 in which, alternatively or in addition to the domed member 16 of FIGURE 1, there is a domed member 42 acting to prevent the wire 3 from flying too far from the member 14.
  • the member 14 is retained against collar 33 by a spring washer 43.
  • An apparatus for unwinding filamentary material from a reel of the material comprising a rotationally balanced member mounted for rotation about the axis of and relatively to said reel, and guide means carried by said member for guiding said material from said reel whilst conveying it about said axis relatively to said reel, and wherein the movement comprises a guide having a smooth convex guiding surface continuous about said axis and disposed to maintain said material free of the rims of said reel as said material travels from the reel along a smoothly curved path which, as considered in the axial direction of said reel, extends past said guiding surface to and beyond the guide means.
  • An apparatus for unwinding filamentary material from a reel of said material comprising: support means for supporting said reel; a guide having a smooth convex guiding surface, continuous about an axis upon which said supporting means can support the axis of said reel, for maintaining said material clear of the reel rims whilst said material is being unwound; a rotationally balanced member mounted for rotation about said axis at that side of said guide opposite to the side at which said reel is to be supported; and guide means for said filamentary material carried resiliently by said member at a region directly radially outwardly of the axial region at which said member is rotatably mounted, whereby said filamentary material can be guided about said axis relatively to said reel whilst at the same time being drawn with an axial component of velocity upon a smoothly curved path extending from said reel and past said guiding surface to and beyond said guide means.
  • a machine for unwinding filamentary material from a reel of the material comprising: reel support means for supporting a reel with its axis extending along an axis of the machine; a rotationally balanced member mounted for rotation relatively to the reel about said axis; drive means operable to draw the material from the reel with an axial component of velocity; guide means carried by said member for guiding said material drawn from said reel whereby said material is unwound from said reel by virtue of relative rotation between said member and said reel; and a guide disposed so as to be between said member and said reel and having a smooth convex guiding surface continuous about said axis for maintaining said material clear of the reel rims as it is drawn from the reel with an axial component of velocity past the guiding surfaceand then through said guide means along a smoothly curved path.
  • a machine comprising: a hollow driving spindle shaft coupled axially to said reel supporting means; second drive means 0perable to rotate the spindle shaft and with it said reel; a passage extending axially through said shaft, said reel, said guide and said rotatable member; and means for supporting a reel of core material at that end of said spindle shaft remote from said guide and said rotatable member whereby said first-mentioned drive means are capable of drawing said core material through said reel, said guide and said rotatable member at the same time as drawing said filamentary material, whereby said filamentary material will be coiled around said core material.
  • a method of unwinding filamentary material from a reel comprising the step of drawing the material from the reel to guide means carried by a rotationally balanced member caused to rotatae about the axis of and relatively to said reel by the force applied to the guide means by the drawing of the material, wherein the improvement comprises guiding the said material along a smoothly curved path to and beyond said guide means past a smooth convex guiding surface which is continuous about said axis and which is disposed at a region axially between said material on said reel and said guide means to maintain said material free of the rims of said reel.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Guides For Winding Or Rewinding, Or Guides For Filamentary Materials (AREA)
  • Tension Adjustment In Filamentary Materials (AREA)
  • Unwinding Of Filamentary Materials (AREA)
US678243A 1966-10-28 1967-10-26 Apparatus and method for unwinding a filamentary material Expired - Lifetime US3451205A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB48570/66A GB1196891A (en) 1966-10-28 1966-10-28 Apparatus for and a Method of Unwinding Wire and the like.

Publications (1)

Publication Number Publication Date
US3451205A true US3451205A (en) 1969-06-24

Family

ID=10449080

Family Applications (1)

Application Number Title Priority Date Filing Date
US678243A Expired - Lifetime US3451205A (en) 1966-10-28 1967-10-26 Apparatus and method for unwinding a filamentary material

Country Status (4)

Country Link
US (1) US3451205A (fr)
CH (1) CH463901A (fr)
DE (1) DE1574340A1 (fr)
GB (1) GB1196891A (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3635421A (en) * 1969-11-20 1972-01-18 Western Electric Co Spool assemblies
US3763899A (en) * 1972-01-26 1973-10-09 Belden Corp Wire twisting device
EP0222239A2 (fr) * 1985-11-08 1987-05-20 VEB Kombinat Wolle und Seide, Meerane Stammbetrieb VEB Textilwerke Palla Fil combiné conductible et tissu fabriqué au moyen de ce fil

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2127869B (en) * 1982-09-22 1986-04-30 Standard Telephones Cables Ltd Optical fibre cable manufacture
DE4411447C2 (de) * 1994-03-31 2000-12-14 Iwt Ind Wickeltechnik Gmbh Wickeleinrichtung

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1949484A (en) * 1932-11-11 1934-03-06 Metal Textile Corp Gimping machine
US2220006A (en) * 1940-10-29 Spindle for strand wrapping
US2237062A (en) * 1940-07-22 1941-04-01 Whitin Machine Works Flier for covering spindles
US2365660A (en) * 1943-08-21 1944-12-19 Atwood Machine Co Flier
US2466797A (en) * 1948-02-14 1949-04-12 Us Rubber Co Flier
US2659108A (en) * 1949-10-24 1953-11-17 Gear Grinding Mach Co Trumpet for use in textile industry
US2831313A (en) * 1955-01-10 1958-04-22 Du Pont Ring traveler
US2947136A (en) * 1957-03-30 1960-08-02 British Nylon Spinners Ltd Twisting of continuous filament yarns

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2220006A (en) * 1940-10-29 Spindle for strand wrapping
US1949484A (en) * 1932-11-11 1934-03-06 Metal Textile Corp Gimping machine
US2237062A (en) * 1940-07-22 1941-04-01 Whitin Machine Works Flier for covering spindles
US2365660A (en) * 1943-08-21 1944-12-19 Atwood Machine Co Flier
US2466797A (en) * 1948-02-14 1949-04-12 Us Rubber Co Flier
US2659108A (en) * 1949-10-24 1953-11-17 Gear Grinding Mach Co Trumpet for use in textile industry
US2831313A (en) * 1955-01-10 1958-04-22 Du Pont Ring traveler
US2947136A (en) * 1957-03-30 1960-08-02 British Nylon Spinners Ltd Twisting of continuous filament yarns

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3635421A (en) * 1969-11-20 1972-01-18 Western Electric Co Spool assemblies
US3763899A (en) * 1972-01-26 1973-10-09 Belden Corp Wire twisting device
EP0222239A2 (fr) * 1985-11-08 1987-05-20 VEB Kombinat Wolle und Seide, Meerane Stammbetrieb VEB Textilwerke Palla Fil combiné conductible et tissu fabriqué au moyen de ce fil
EP0222239A3 (en) * 1985-11-08 1987-12-16 Veb Forschung Und Entwicklung Electrically conductive combination yarn, and textile made of the same

Also Published As

Publication number Publication date
GB1196891A (en) 1970-07-01
CH463901A (fr) 1968-10-15
DE1574340A1 (de) 1971-06-03

Similar Documents

Publication Publication Date Title
US3717312A (en) Thread storage and delivery device
US3124924A (en) System and apparatus for making elastic yarn
US4429723A (en) Yarn braking means for yarn feeding devices
US2492778A (en) Yarn twisting apparatus and method
US2882673A (en) Coiling head for yarn packs
US3451205A (en) Apparatus and method for unwinding a filamentary material
US2729050A (en) Apparatus for and method of preparing textile strands by twisting, twining, wrapping, and covering
US2811013A (en) Yarn twisting machine
US4469290A (en) Thread guide for coaxially mounted bobbins
US2610806A (en) Constant tension winding
US3848405A (en) Apparatus and method for producing no-twist center pull roving packages
US2785526A (en) Twister spindle
US2609652A (en) Double-twist spindle
US3376699A (en) Roller type travelers and flyers
US2671305A (en) Yarn twisting and tensioning device
US3791119A (en) Devices for unwinding filamentary material from a bobbin or sp ool
US4423587A (en) Double twisting frame for flange bobbin
US2932150A (en) Twister spindle
US3007299A (en) Apparatus for controlling the ballooning of yarn
US3339862A (en) Method of unwinding yarn
US2388121A (en) Tension control device
US2867969A (en) Double twister
US4309868A (en) Rotating ring for spinning and twisting machines
US4856267A (en) Method and apparatus for twisting together lengths of filamentary material
US3032961A (en) Spindle tip type spinning device