GB780065A - Improvements relating to the manufacture of insulated cables - Google Patents

Improvements relating to the manufacture of insulated cables

Info

Publication number
GB780065A
GB780065A GB26845/53A GB2684553A GB780065A GB 780065 A GB780065 A GB 780065A GB 26845/53 A GB26845/53 A GB 26845/53A GB 2684553 A GB2684553 A GB 2684553A GB 780065 A GB780065 A GB 780065A
Authority
GB
United Kingdom
Prior art keywords
die
guide tube
conductor
insulated
twisted
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
Application number
GB26845/53A
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.)
SHARDLOW ELECTRIC WIRES Ltd
Original Assignee
SHARDLOW ELECTRIC WIRES 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 SHARDLOW ELECTRIC WIRES Ltd filed Critical SHARDLOW ELECTRIC WIRES Ltd
Priority to GB26845/53A priority Critical patent/GB780065A/en
Publication of GB780065A publication Critical patent/GB780065A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • H01B13/14—Insulating conductors or cables by extrusion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/05—Filamentary, e.g. strands
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/06—Rod-shaped
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/30—Extrusion nozzles or dies
    • B29C48/32—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles
    • B29C48/34—Cross-head annular extrusion nozzles, i.e. for simultaneously receiving moulding material and the preform to be coated

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

780,065. Extrusion-coating cable cores. SHARDLOW ELECTRIC WIRES, Ltd., and HARGREAVES, F. G. Dec. 29,1954 [Sept. 30, 1953], No. 26845/53. Class 87(2). A sector-shape conductor C, Fig. 3, which has been twisted to the desired lay prior to being insulated (the insulated twisted conductor being then built up with other insulated twisted conductors into a cable) is insulated by passing it through an extrusion-coating machine comprising a rotatable guide tube 24 and a rotatable die 18, the tube and the die being secured together by members 29 so that they rotate as one. The outlet O of the guide tube conforms in shape to that of the conductor, and the conductor moves forwardly without rotating, so that the conductor turns the guide tube and with it the die. The rotation of the guide tube and die may be assisted by an electric motor 27 via an adjustable pressure slip ring frictional drive 28 and chain drive 26. Figs. 1 and 2 show a modified machine in which the die 18 is coupled to the front end 14 of the guide tube 13 by keys 23. The die has slots 20, which connect the bore 12 with a tapered outlet 19 in the die, and is mounted in a hollow plug 22.
GB26845/53A 1953-09-30 1953-09-30 Improvements relating to the manufacture of insulated cables Expired GB780065A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB26845/53A GB780065A (en) 1953-09-30 1953-09-30 Improvements relating to the manufacture of insulated cables

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB26845/53A GB780065A (en) 1953-09-30 1953-09-30 Improvements relating to the manufacture of insulated cables

Publications (1)

Publication Number Publication Date
GB780065A true GB780065A (en) 1957-07-31

Family

ID=10250168

Family Applications (1)

Application Number Title Priority Date Filing Date
GB26845/53A Expired GB780065A (en) 1953-09-30 1953-09-30 Improvements relating to the manufacture of insulated cables

Country Status (1)

Country Link
GB (1) GB780065A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2332597A1 (en) * 1975-11-18 1977-06-17 Pirelli General Cable Works PROCESS FOR THE MANUFACTURING OF COATED ELECTRIC CABLES
FR2573341A1 (en) * 1984-11-21 1986-05-23 Pirelli Treficable ROTARY EXTRUSION HEAD, IN PARTICULAR FOR MANUFACTURING OF HELICOIDAL GROOVES FOR OPTICAL FIBERS
FR2631884A1 (en) * 1988-05-25 1989-12-01 Swisscab E Kertscher Sa Method and apparatus for extruding an insulating jacket over a conductor having a non-circular transverse profile

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2332597A1 (en) * 1975-11-18 1977-06-17 Pirelli General Cable Works PROCESS FOR THE MANUFACTURING OF COATED ELECTRIC CABLES
FR2573341A1 (en) * 1984-11-21 1986-05-23 Pirelli Treficable ROTARY EXTRUSION HEAD, IN PARTICULAR FOR MANUFACTURING OF HELICOIDAL GROOVES FOR OPTICAL FIBERS
EP0187060A1 (en) * 1984-11-21 1986-07-09 Treficable Pirelli Rotatable extruding head, particularly for making cable-like holders with helical grooves for optical fibres
FR2631884A1 (en) * 1988-05-25 1989-12-01 Swisscab E Kertscher Sa Method and apparatus for extruding an insulating jacket over a conductor having a non-circular transverse profile

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