GB770872A - Improvements in or relating to extrusion apparatus and methods - Google Patents

Improvements in or relating to extrusion apparatus and methods

Info

Publication number
GB770872A
GB770872A GB25892/52A GB2589252A GB770872A GB 770872 A GB770872 A GB 770872A GB 25892/52 A GB25892/52 A GB 25892/52A GB 2589252 A GB2589252 A GB 2589252A GB 770872 A GB770872 A GB 770872A
Authority
GB
United Kingdom
Prior art keywords
billet
container
extrusion
bore
rams
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
GB25892/52A
Inventor
Reginald Victor Rowles
Robert Madeley
Neville Allan Thomas Clarke
Alfred Victor Garner
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.)
Fielding and Platt Ltd
WT Henleys Telegraph Works Co Ltd
Original Assignee
Fielding and Platt Ltd
WT Henleys Telegraph Works Co 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 Fielding and Platt Ltd, WT Henleys Telegraph Works Co Ltd filed Critical Fielding and Platt Ltd
Priority to GB25892/52A priority Critical patent/GB770872A/en
Publication of GB770872A publication Critical patent/GB770872A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • B21C25/00—Profiling tools for metal extruding
    • B21C25/06—Press heads, dies, or mandrels for coating work
    • 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
    • B29C48/03—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
    • B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
    • 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
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/475—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using pistons, accumulators or press rams
    • 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
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/49—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using two or more extruders to feed one die or nozzle

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Extrusion Of Metal (AREA)

Abstract

770,872. Extruding. FIELDING & PLATT, Ltd., and HENLEY'S TELEGRAPH WORKS CO., Ltd., W. T. Oct. 15, 1953 [Oct. 15, 1952], No. 25892/52. Class 83 (4). [Also in Group V] In the extrusion of material from a hydraulic press having two or more billet containers 5, 6 from which the billets are extruded in succession by hydraulic rams, the billet residue remaining in its container when the extrusion is changed over to another container is approximately one third to one half of the initial mass of the billet so as to reduce or eliminate any tendency of the billet material to flow back into the first mentioned container during the change over. To further increase the resistance to back flow, at least a portion of the bore of each container is tapered with the maximum diameter of the tapered portion at the die end of the bore. The tapered portion may commence at a point mid-way along the bore as in the container 5, or at a point one third or one quarter from the die end as in the container 6. In the latter case the passage 15 leading to the annular mixing chamber 7 is larger than the passage 15 of the other container 5. When a new billet is inserted into a container, pressure is applied by the ram to upset the billet and to force it into the residue of the previous billet before extrusion of that billet commences. The mixing chamber communicates through apertures 12 with an extrusion orifice 10 formed between inner and outer dies 8, 9. The rams may have the same diameter and stroke or they may have dissimilar dimensions. In the latter case the hydraulic control means for the rams is arranged to ensure that the same volume of material is always delivered to the mixing chamber per unit time. These control arrangements may be as described in Specification 770,871. The invention is applicable to the extrusion of solid sections, tubes or for the sheathing of cables using billets of non-ferrous metals or alloys, particularly aluminium, or synthetic resins.
GB25892/52A 1952-10-15 1952-10-15 Improvements in or relating to extrusion apparatus and methods Expired GB770872A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB25892/52A GB770872A (en) 1952-10-15 1952-10-15 Improvements in or relating to extrusion apparatus and methods

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB25892/52A GB770872A (en) 1952-10-15 1952-10-15 Improvements in or relating to extrusion apparatus and methods

Publications (1)

Publication Number Publication Date
GB770872A true GB770872A (en) 1957-03-27

Family

ID=10235059

Family Applications (1)

Application Number Title Priority Date Filing Date
GB25892/52A Expired GB770872A (en) 1952-10-15 1952-10-15 Improvements in or relating to extrusion apparatus and methods

Country Status (1)

Country Link
GB (1) GB770872A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110369539A (en) * 2019-08-13 2019-10-25 大连康丰科技有限公司 A kind of electrical cable aluminium sheath four-way continuous coating cavity and its localization method
US11437852B2 (en) 2007-01-29 2022-09-06 Powermat Technologies Ltd. Pinless power coupling

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11437852B2 (en) 2007-01-29 2022-09-06 Powermat Technologies Ltd. Pinless power coupling
US11611240B2 (en) 2007-01-29 2023-03-21 Powermat Technologies Ltd. Pinless power coupling
US11881717B2 (en) 2007-01-29 2024-01-23 Powermat Technologies Ltd. Pinless power coupling
CN110369539A (en) * 2019-08-13 2019-10-25 大连康丰科技有限公司 A kind of electrical cable aluminium sheath four-way continuous coating cavity and its localization method
CN110369539B (en) * 2019-08-13 2024-03-22 大连康丰科技有限公司 Four-channel continuous coating cavity of cable aluminum sheath and positioning method thereof

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