GB2016354A - Improvements in or relating to screw conveyors and components therefor - Google Patents

Improvements in or relating to screw conveyors and components therefor

Info

Publication number
GB2016354A
GB2016354A GB7915996A GB7915996A GB2016354A GB 2016354 A GB2016354 A GB 2016354A GB 7915996 A GB7915996 A GB 7915996A GB 7915996 A GB7915996 A GB 7915996A GB 2016354 A GB2016354 A GB 2016354A
Authority
GB
United Kingdom
Prior art keywords
core
vane
relating
improvements
screw conveyor
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.)
Withdrawn
Application number
GB7915996A
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.)
Pracy H R
Original Assignee
Pracy H R
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
Priority to GB538278 priority Critical
Application filed by Pracy H R filed Critical Pracy H R
Priority to GB7915996A priority patent/GB2016354A/en
Publication of GB2016354A publication Critical patent/GB2016354A/en
Application status is Withdrawn legal-status Critical

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C53/00Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
    • B29C53/14Twisting
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03Extrusion 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
    • B29C48/13Articles with a cross-section varying in the longitudinal direction, e.g. corrugated pipes
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/15Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor incorporating preformed parts or layers, e.g. extrusion moulding around inserts
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25Component parts, details or accessories; Auxiliary operations
    • B29C48/30Extrusion nozzles or dies
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25Component parts, details or accessories; Auxiliary operations
    • B29C48/30Extrusion nozzles or dies
    • B29C48/301Extrusion nozzles or dies having reciprocating, oscillating or rotating parts
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25Component parts, details or accessories; Auxiliary operations
    • B29C48/30Extrusion nozzles or dies
    • B29C48/32Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25Component parts, details or accessories; Auxiliary operations
    • B29C48/355Conveyors for extruded articles
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03Extrusion 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
    • B29C48/09Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29LINDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00Other particular articles
    • B29L2031/18Heat-exchangers or parts thereof

Abstract

A screw conveyor e.g. of plastics material, for conveying particulate material, and comprising a core (16) about which extends an integral helical conveying vane (17), is formed by extrusion from a rotating die (12 or 27) which has an extrusion outlet opening (13) corresponding to the required cross-section of the core and vane. The pitch of the vane may be varied by altering the speed of rotation of the die. The core of the member may be tubular or may be extruded around a reinforcement (36), e.g. a rod or a stranded cable to form a respective rigid or flexible screw conveyor. The vane may be single or multiple e.g. three start, and may have tapered sides, and may join the core at a smooth curve. <IMAGE>
GB7915996A 1978-02-10 1979-05-09 Improvements in or relating to screw conveyors and components therefor Withdrawn GB2016354A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB538278 1978-02-10
GB7915996A GB2016354A (en) 1978-02-10 1979-05-09 Improvements in or relating to screw conveyors and components therefor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB7915996A GB2016354A (en) 1978-02-10 1979-05-09 Improvements in or relating to screw conveyors and components therefor

Publications (1)

Publication Number Publication Date
GB2016354A true GB2016354A (en) 1979-09-26

Family

ID=26239844

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7915996A Withdrawn GB2016354A (en) 1978-02-10 1979-05-09 Improvements in or relating to screw conveyors and components therefor

Country Status (1)

Country Link
GB (1) GB2016354A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2494626A1 (en) * 1980-11-21 1982-05-28 Mihama Mfg Process and apparatus for manufacturing synthetic resin turbulence elements
EP0293270A2 (en) * 1987-05-29 1988-11-30 Masao Moriyama Method and apparatus for producing screw feeders for a plastic injection-molding machine
EP2136157A3 (en) * 2008-06-16 2010-11-03 Demar Heiwerken B.V. Tube assembly for geothermal heat exchanger
WO2013033426A3 (en) * 2011-09-01 2013-04-25 Covidien Lp Catheter with helical drive shaft and methods of manufacture
DE102017004477A1 (en) * 2017-05-10 2018-11-15 Gemo D.G. Moritz GmbH & Co. Kommanditgesellschaft A process for producing a pitch cable, and extruder for its implementation

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2494626A1 (en) * 1980-11-21 1982-05-28 Mihama Mfg Process and apparatus for manufacturing synthetic resin turbulence elements
EP0293270A2 (en) * 1987-05-29 1988-11-30 Masao Moriyama Method and apparatus for producing screw feeders for a plastic injection-molding machine
US4867667A (en) * 1987-05-29 1989-09-19 Masao Moriyama Apparatus for producing screw feeders for a plastic injection-molding machine
EP0293270A3 (en) * 1987-05-29 1990-02-07 Masao Moriyama Method and apparatus for producing screw feeders for a plastic injection-molding machine
EP2136157A3 (en) * 2008-06-16 2010-11-03 Demar Heiwerken B.V. Tube assembly for geothermal heat exchanger
WO2013033426A3 (en) * 2011-09-01 2013-04-25 Covidien Lp Catheter with helical drive shaft and methods of manufacture
US8992717B2 (en) 2011-09-01 2015-03-31 Covidien Lp Catheter with helical drive shaft and methods of manufacture
US9770259B2 (en) 2011-09-01 2017-09-26 Covidien Lp Catheter with helical drive shaft and methods of manufacture
US10335188B2 (en) 2011-09-01 2019-07-02 Covidien Lp Methods of manufacture of catheter with helical drive shaft
DE102017004477A1 (en) * 2017-05-10 2018-11-15 Gemo D.G. Moritz GmbH & Co. Kommanditgesellschaft A process for producing a pitch cable, and extruder for its implementation

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)