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GB844199A - Extrusion apparatus - Google Patents

Extrusion apparatus

Info

Publication number
GB844199A
GB844199A GB6532/58A GB653258A GB844199A GB 844199 A GB844199 A GB 844199A GB 6532/58 A GB6532/58 A GB 6532/58A GB 653258 A GB653258 A GB 653258A GB 844199 A GB844199 A GB 844199A
Authority
GB
United Kingdom
Prior art keywords
tapered
channel
tip
core
helical
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
GB6532/58A
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.)
STC PLC
Original Assignee
Standard Telephone and Cables PLC
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 Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Publication of GB844199A publication Critical patent/GB844199A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • 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

Landscapes

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

Abstract

844,199. Extruding coatings on cores. STANDARD TELEPHONES & CABLES Ltd. Feb. 28, 1958 [March 7, 1957], No. 6532/58. Class 87(2). An extrusion-core coating apparatus comprises a block member 2 having an axial channel 4, a tapered member 14 disposed in the channel 4 and having a helical rib the edges of which are of differing pitch so that the width of the helical groove diminishes towards the smaller end of the member 14, a die 5 having a tapered bore 6 within which the small end of the tapered member 14 is centred, a chamber 3 through which the plastic material is fed and a second channel 3<SP>1</SP> extending from the chamber 3 to the channel 4 in a direction tangential to the base of the helical groove in the member 14 and being of rectangular cross-section and of a size equal to that of the groove at that position. The tapered member 14 has a tip 11 with a ball and socket seating 15 so that the tip 11 may be centered in the die 5 by means of screws 26 in a collar 20 and its helical rib may be formed with steps 14<SP>1</SP> so that its depth decreases towards its tapered end. The tip 11 has a bore 30 for the passage of the core to be coated and has suction holes 31 leading to a line 33 enabling the plastic sheaf to be drawn on to the core. A cover 27 with an inspection window 28 is provided and heating is by electrical elements 9, 19.
GB6532/58A 1957-03-07 1958-02-28 Extrusion apparatus Expired GB844199A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US844199XA 1957-03-07 1957-03-07

Publications (1)

Publication Number Publication Date
GB844199A true GB844199A (en) 1960-08-10

Family

ID=22184856

Family Applications (1)

Application Number Title Priority Date Filing Date
GB6532/58A Expired GB844199A (en) 1957-03-07 1958-02-28 Extrusion apparatus

Country Status (1)

Country Link
GB (1) GB844199A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113764130A (en) * 2021-09-06 2021-12-07 安徽国信电缆科技股份有限公司 Environment-friendly cable for solar photovoltaic system
CN116901399A (en) * 2023-08-10 2023-10-20 昆山精匠达精密模塑有限公司 A kind of photovoltaic plastic conduit angle spiral head extrusion mold

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113764130A (en) * 2021-09-06 2021-12-07 安徽国信电缆科技股份有限公司 Environment-friendly cable for solar photovoltaic system
CN113764130B (en) * 2021-09-06 2023-12-19 安徽国信电缆科技股份有限公司 Environment-friendly cable for solar photovoltaic system
CN116901399A (en) * 2023-08-10 2023-10-20 昆山精匠达精密模塑有限公司 A kind of photovoltaic plastic conduit angle spiral head extrusion mold

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