US3779055A - Apparatus and method for manufacturing insulated conductive wires - Google Patents

Apparatus and method for manufacturing insulated conductive wires Download PDF

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Publication number
US3779055A
US3779055A US00197045A US3779055DA US3779055A US 3779055 A US3779055 A US 3779055A US 00197045 A US00197045 A US 00197045A US 3779055D A US3779055D A US 3779055DA US 3779055 A US3779055 A US 3779055A
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US
United States
Prior art keywords
wire
machine
driving
dies
enamelling
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Expired - Lifetime
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US00197045A
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English (en)
Inventor
R Goyffon
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.)
PLCV Ltd
Manufacture de Fils Isoles Taurus SA MAFIT
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Manufacture de Fils Isoles Taurus SA MAFIT
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Assigned to GENERAL ENGINEERING RADCLIFFE 1979 LIMITED, A BRITISH COMPANY reassignment GENERAL ENGINEERING RADCLIFFE 1979 LIMITED, A BRITISH COMPANY ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: TREFILERIES DE DARNETAL
Assigned to GENERAL ENGINEERING RADCLIFFE 1979 LIMITED reassignment GENERAL ENGINEERING RADCLIFFE 1979 LIMITED ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: TREFILERIES DE DARNETAL, A FRENCH COMPANY
Assigned to PLCV LIMITED reassignment PLCV LIMITED ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: GENERAL ENGINEERING RADCLIFFE LIMITED
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    • 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
    • B21C1/00—Manufacture of metal sheets, metal wire, metal rods, metal tubes by drawing
    • B21C1/02—Drawing metal wire or like flexible metallic material by drawing machines or apparatus in which the drawing action is effected by drums
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
    • H01B13/06—Insulating conductors or cables
    • H01B13/065—Insulating conductors with lacquers or enamels
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/4998—Combined manufacture including applying or shaping of fluent material
    • Y10T29/49982—Coating
    • Y10T29/49986—Subsequent to metal working

Definitions

  • This invention relates to an apparatus and method for manufacturing insulated conductive wires. More particularly, it relates to an improved method of operating a wire-drawing machine and an enamelling machine in combination and to an improved installation comprising these two machines.
  • the wire-drawing machine and the enamelling machine are driven by individual motor means and are operated in combination with an intermediate non-slip capstan to drive the wire issuing. from the last die of the wire-drawing machine directly into the enamelling. machine.
  • FIG. l shows schematically the elements of one embodiment of an installation established according to the invention.
  • FIG. 2 a part of FIG. 1 arranged according to a modification. of the invention
  • FIG. 3 shows the main feature of the embodiment of FIGS. land 2 in detail
  • FIG. 4 shows another embodiment of the feature of FIG. 3.
  • the enamelling machine used is of the type which comprises the improvements described in US. Pat. No. 3,412,709 and French Pat. No. 1,496,780 of Aug. 22, 1966 and corresponding US. Pat. application 660,256 filed Aug. 14, 1967 (now abandoned).
  • Such an enamelling machine which has been shown schematically at 1 and which is driven by a motor M, permits enamelling speeds to be obtained of the order of 700 meters/minute and higher for a wire of 10/100 millimeters (0.1 mm) diameter (AWG 38).
  • a wire-drawing machine with slipping is used and is designated generally by 2 in FIG. 11.
  • the drive preferably takes place through the intermediary of a speed varier 3, permitting the machine to be started from a speed of zero.
  • this speed varier drives wire-drawing cones 4a, 4b and 5a, 5b disposed in a common vertical plane but offset two by two, as shown, in order to avoid any non-rectilinear reversing of the direction of the wire.
  • Two die-holders 6 and 7 are disposed respectively between the cones 4a and 417 on the one hand, and 5a and 5b on the other hand.
  • the last steps have been designated respectively 15a and 15b.
  • Each die-holder comprises a series of dies, not represented individually, but designated generally respectively by 60 and 7a.
  • the drive of the pair of cones 4a and 4b takes place via a belt 8 which acts on the shaft of the cone 40 whose rotation is transmitted to the shaft of the cone 4b by means of a belt 9. It is by means of a belt 10 that the movement of the shafts of the cones 4a and 4b is transmitted to the shaft of the cone 5b, then from this latter shaft to the shaft of the cone 5a via a belt 11.
  • the diameters of the pulleys, carried by the various belt-driven shafts which have just been described are chosen, as is visible in FIG. 1, so as to provide the speed reductions or increases necessary for obtaining the speeds of rotation required for the various wiredrawing cones.
  • the wire-drawing machine has as many cone and dieholder assemblies, like, for example, the one that has just been described, as the enamelling machine has enamelling lines.
  • the enamelling machine and the wire-drawing machine which are driven by individual motor means, are combined so as to drive the wire F issuing from the last die of the wire-drawing ma chine by means of an intermediate non-slip capstan, which enables the two machines-- on the one hand the wiredrawing machine, and on the other hand the enamelling machine to be free of any rigid mechanical connection or any synchronization system, and hence to remain independent.
  • the wire consequently passes from the last step 15a of the cone 4a through the last die of the series 6a, onto the capstan 13 upstream of the enamelling machine, after having left the wire-drawing machine, for example through a hole 16.
  • v the speed of the wire-drawing machine is always higher than the corresponding speed of the enamelling machine whose value is chosen so as to obtain the best possible setting of the enamel.
  • the wire-drawing machine is thus used as a sort of conventional reel, the drawing force being nevertheless greater than what it normally is.
  • the wire to be enamelled can be wound around the capstan several times,if desired by means of a guide roller as in the embodiment shown in FIG. 4, or a bearing roller holding the wire against the capstan can be used as shown in the embodiment of FIG. 3.
  • the capstan shown in FIG. 3, denoted generally by 13 receives the wire F from the wire-drawing machine 2, possibly via a guide roller 20.
  • the wire F is applied against the cylindrical surface 21 of the capstan by means of a bearing roller 22 having its axle 23 parallel to the shaft 24 of the capstan 13.
  • the axle 23 is hinged on a pivot 23a, a spring 25 urging it radially towards the capstan 13.
  • the wire F is thus gripped between the cylindrical surface 26 of the bearing roller 22 and the cylindrical surface 21 of the capstan l3 sufficiently to avoid slippage and is thus fed therefrom at a constant speed V to the enamelling machine 1.
  • the wire F coming from the wire-drawing machine 2 is fed over a guide roller to the capstan 13.
  • the guide roller 20 is adapted to receive the wire back from the capstan and redirect it round the capstan several times so that slippage on the capstan is eliminated. From its last turn on the capstan the wire is fed to the enamelling machine At the output of the enamelling machine, the wire F is directed, for example by means of a capstan 14 which can be driven by the motor M, towards a take-up unit, which can advantageously be of the type disclosed in the French Pat. No. 1,482,160 of Apr. 13, 1966.
  • the diameter of the capstan is conveniently such as to provide three revolutions for the passage of l metre of wire.
  • the unit disclosed in French Pat. No. 1,482,160 comprises a rotatable support adapted to carry a bobbin in a winding-up position as well as at least one empty bobbin; means for automatically moving the said support to bring the empty bobbin into the winding-up position when the first bobbin is full; means for controlling and adjusting the tension of the filament being wound; and means for automatically severing the filament as a result of the automatic movement of the support in combination with means for uniformly distributing the filament over the whole width of the bobbin and for placing it on the empty bobbin.
  • the apparatus according to this invention permits the speed of rotation of the wire-drawing machine to be increased after a rectification of the wire-drawing capstans, which is necessary to be able to preserve a given rate of slipping whatever be the decrease of the diameters of the wire-drawing capstans, the enamelling speed being fixed.
  • the wear is proportional to the slipping so that it is consequently advantageous to beable to reduce this slipping, the machining tolerances of the wire-drawing dies and their wear do not permit this slipping to be reduced to zero.
  • the setting up of the apparatus thus established that is to say the putting in place of the wire is very easy due to the driving of the wire through the wiredrawing machine and the enamelling machine by independent means. Indeed, the wire-drawing machine, the enamelling machine does not need to be in operation, and, conversely, to set up the enamelling machine, the wire-drawing machine can constantly remain in operation.
  • the speed varier is adjusted so that its speed permits the wire to pass easily from one cone step to another; the machine is stopped only for the time necessary to pass the wire through each corresponding die.
  • the Table below gives the production speeds obtained in a prior art machine and the speeds obtained by the invention for several sizes of enamelled wire.
  • the apparatus also has advantages in permitting the use,after the provision of a take up device(and, should the occasion arise, of an output capstan) of the wiredrawing machine independently of the enamelling machine, and of not necessitating the rectification of the capstan of the enamelling machine.
  • This capstan has to operate without slipping (only thecapstans of the wiredrawing machine need be subject to slippage). This is possible due to the independence of the drives and of the speeds of the enamelling machine and of the wire-drawing machine.
  • a wire-drawing machine comprising a plurality of dies and first driving means for driving a wire through said plurality of dies
  • second driving means including a driving capstan, for driving the wire through the enamelling machine after said wire has passed through the wire-driving machine, said second driving means being independent from and without mechanical connection to said first driving means, said driving capstan including non-slipping means and driving directly the wire issuing from the last die of said plurality of dies of said wire-drawing machine, and means for maintaining the speed of said driving capstan at a preset value even following adjustment or rectification of said first driving means.
  • said last die consists of a finishing die, said finishing die being disposed at the output of the wire-drawing machine.
  • the driving means of the wire-drawing machine comprise two driving cones disposed respectively on opposite sides of said last series of dies for drawing the wire through said last series of dies, one of said cones having a series of steps corresponding respectively to each of the dies of said last series, said one cone being disposed so that its last step is upstream, with respect to the advance of the wire, of the last die of said last series, and the other of said cones having a series of steps corresponding respectively to each of the dies of said last series except said last die, the wire issuing from said last die passing directly onto said driving capstan of the enamelling machine.
  • said non-slipping means comprises means for winding the wire more than once around the driving capstan.
  • said non-slipping means comprises a bearing roller.
  • a continuous high-speed method of manufacturing insulated conductive wire comprising:

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Metal Extraction Processes (AREA)
US00197045A 1967-12-28 1971-11-09 Apparatus and method for manufacturing insulated conductive wires Expired - Lifetime US3779055A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR134091 1967-12-28

Publications (1)

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US3779055A true US3779055A (en) 1973-12-18

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US00197045A Expired - Lifetime US3779055A (en) 1967-12-28 1971-11-09 Apparatus and method for manufacturing insulated conductive wires

Country Status (5)

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US (1) US3779055A (ja)
AT (1) AT285699B (ja)
DE (1) DE1816612B2 (ja)
FR (1) FR1557128A (ja)
GB (1) GB1244384A (ja)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3852875A (en) * 1973-01-05 1974-12-10 Southwire Co High speed tandem wire drawing and insulation system
US3962898A (en) * 1973-04-21 1976-06-15 Berkenhoff & Drebes Gesellschaft Mit Beschrankter Haftung Apparatus for the manufacture of wire
US3979940A (en) * 1972-10-19 1976-09-14 British Insulated Callender's Cables Limited Wire drawing machinery
US4552599A (en) * 1983-05-11 1985-11-12 Sumitomo Electric Industries, Ltd. Process for producing insulated rectangular wire
US9676016B2 (en) 2013-09-23 2017-06-13 Manchester Copper Products, Llc Systems and methods for drawing materials

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1305032A (ja) * 1969-11-27 1973-01-31

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2480711A (en) * 1944-12-08 1949-08-30 Robert G Calton Continuous method of forming and porcelain enameling sheet metal
US2861393A (en) * 1954-08-11 1958-11-25 Owens Corning Fiberglass Corp Production of coated-glass fibers
US3181326A (en) * 1962-07-20 1965-05-04 Phelps Dodge Copper Prod High-speed production of magnet wire
US3273987A (en) * 1961-06-19 1966-09-20 Owens Corning Fiberglass Corp Coating fibrous glass yarns
US3284892A (en) * 1963-09-25 1966-11-15 Anaconda American Brass Co Wire processing
US3391450A (en) * 1965-03-04 1968-07-09 Advanced Wyrepak Company Inc Process for treating wire

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2480711A (en) * 1944-12-08 1949-08-30 Robert G Calton Continuous method of forming and porcelain enameling sheet metal
US2861393A (en) * 1954-08-11 1958-11-25 Owens Corning Fiberglass Corp Production of coated-glass fibers
US3273987A (en) * 1961-06-19 1966-09-20 Owens Corning Fiberglass Corp Coating fibrous glass yarns
US3181326A (en) * 1962-07-20 1965-05-04 Phelps Dodge Copper Prod High-speed production of magnet wire
US3284892A (en) * 1963-09-25 1966-11-15 Anaconda American Brass Co Wire processing
US3391450A (en) * 1965-03-04 1968-07-09 Advanced Wyrepak Company Inc Process for treating wire

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3979940A (en) * 1972-10-19 1976-09-14 British Insulated Callender's Cables Limited Wire drawing machinery
US3852875A (en) * 1973-01-05 1974-12-10 Southwire Co High speed tandem wire drawing and insulation system
US3962898A (en) * 1973-04-21 1976-06-15 Berkenhoff & Drebes Gesellschaft Mit Beschrankter Haftung Apparatus for the manufacture of wire
US4552599A (en) * 1983-05-11 1985-11-12 Sumitomo Electric Industries, Ltd. Process for producing insulated rectangular wire
US9676016B2 (en) 2013-09-23 2017-06-13 Manchester Copper Products, Llc Systems and methods for drawing materials

Also Published As

Publication number Publication date
AT285699B (de) 1970-11-10
DE1816612A1 (de) 1970-01-15
DE1816612B2 (de) 1970-11-19
GB1244384A (en) 1971-09-02
FR1557128A (ja) 1969-02-14

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AS Assignment

Owner name: GENERAL ENGINEERING RADCLIFFE 1979 LIMITED, STATIO

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:TREFILERIES DE DARNETAL;REEL/FRAME:003979/0729

Effective date: 19820319

AS Assignment

Owner name: GENERAL ENGINEERING RADCLIFFE 1979 LIMITED, STATIO

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST. EFFECTIVE DATE MARCH 31, 1976;ASSIGNOR:TREFILERIES DE DARNETAL, AFRENCH COMPANY;REEL/FRAME:004013/0327

Effective date: 19820301

AS Assignment

Owner name: PLCV LIMITED, 6 SLOANE SQUARE, LONDON, SW1W 8EE, E

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:GENERAL ENGINEERING RADCLIFFE LIMITED;REEL/FRAME:004501/0387

Effective date: 19851010