GB810421A - Improvements in or relating to the manufacture of articles of plastic material for example, drain pipes and guttering by extrusion - Google Patents

Improvements in or relating to the manufacture of articles of plastic material for example, drain pipes and guttering by extrusion

Info

Publication number
GB810421A
GB810421A GB28494/53A GB2849453A GB810421A GB 810421 A GB810421 A GB 810421A GB 28494/53 A GB28494/53 A GB 28494/53A GB 2849453 A GB2849453 A GB 2849453A GB 810421 A GB810421 A GB 810421A
Authority
GB
United Kingdom
Prior art keywords
mandrel
extrusion
pipe
die
heat
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
GB28494/53A
Inventor
Harry Shaw
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.)
BITUMEX Ltd
Original Assignee
BITUMEX 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 BITUMEX Ltd filed Critical BITUMEX Ltd
Priority to GB28494/53A priority Critical patent/GB810421A/en
Publication of GB810421A publication Critical patent/GB810421A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B21/00—Methods or machines specially adapted for the production of tubular articles
    • B28B21/52—Methods or machines specially adapted for the production of tubular articles by extruding
    • B28B21/54—Mouthpieces for shaping sockets, bends, or like peculiarly-shaped tubular articles
    • 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
    • B29C48/03—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
    • B29C48/13—Articles with a cross-section varying in the longitudinal direction, e.g. corrugated pipes
    • 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
    • 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
    • B29C48/50—Details of extruders
    • B29C48/505—Screws
    • B29C48/51—Screws with internal flow passages, e.g. for molten material
    • B29C48/515—Screws with internal flow passages, e.g. for molten material for auxiliary fluids, e.g. foaming agents
    • 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
    • B29C48/78—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling
    • B29C48/80—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling at the plasticising zone, e.g. by heating cylinders
    • B29C48/83—Heating or cooling the cylinders
    • B29C48/832—Heating
    • 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
    • B29C48/78—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling
    • B29C48/80—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling at the plasticising zone, e.g. by heating cylinders
    • B29C48/84—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling at the plasticising zone, e.g. by heating cylinders by heating or cooling the feeding screws
    • B29C48/845—Heating
    • 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
    • B29C48/78—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling
    • B29C48/80—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling at the plasticising zone, e.g. by heating cylinders
    • B29C48/84—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling at the plasticising zone, e.g. by heating cylinders by heating or cooling the feeding screws
    • B29C48/85—Cooling
    • 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
    • B29C48/78—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling
    • B29C48/86—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling at the nozzle zone
    • 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
    • B29C48/78—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling
    • B29C48/86—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling at the nozzle zone
    • B29C48/865—Heating
    • 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
    • B29C48/001—Combinations of extrusion moulding with other shaping operations
    • B29C48/0022—Combinations of extrusion moulding with other shaping operations combined with cutting
    • 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
    • B29C48/10—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels flexible, e.g. blown foils

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

810,421. Extrusion machines. BITUMEX Ltd. March 15, 1955 [Dec. 15, 1953], No. 28494/53. Class 87(2). Separate masses of heat-transfer fluid are used to control the temperature of various parts of an extrusion machine, a controlled portion of each mass being passed through a heat exchange device. In the pipe making machine shown, Fig. 1, bituminous material is forced by a screw 12 over a hollow mandrel 15 into a die 19, 20, 21. The interior of the mandrel is divided into compartments by plungers 36A, 37A, 38A, 39A which are mounted on threaded rods 40, 41 whereby the axial position of the plungers and hence the size of the compartments may be varied. Each compartment is associated with a supply and a discharge pipe, e.g. 46, 47, for heat-transfer fluid, the pipes passing through holes in the plungers. In addition, separate masses of heat-transfer fluid a recirculated through chambers 35B, 35C. Each chamber is provided with a separate pump 50, Fig. 3, all the pumps being driven by a common motor. The inlet side of pump 50 is connected to a pipe 51 from the chamber 35 and the outlet side to two pipes 53, 52 leading respectively via a cooling coil 54 to a needle valve 56 and direct to a second needle valve located behind valve 56. The proportion of fluid passing through the coil is determined by the setting of the valves. The chambers 35 are each provided with an electric heater. In a similar manner, the heating compartments of the mandrel are provided with separate pumps, heaters and temperaturecontrol means. In operation, the die 19, 20, 21 remains stationary until it is full, at which point it is released by hydraulic jacks 23 and slid along a tubular extension 25 of the mandrel 15. When the desired length of pipe has been extruded over the tube 25, the extruded pipe is cut-off, the tube 25 released from the mandrel 15 and moved out of the way. A fresh tube 25 and die 19, 20, 21 are then brought into position and extrusion recommences. The machine may comprise three sets of tubes and dies mounted to rotate in a horizontal plane about a turret remote from the extrusion head. The turret also contains means (e.g. cables, pulleys and counter weights) for facilitating movement of the die along the tubes 25. The invention may be applied to machines in which the mandrel is supported by spokes. In this case, heating fluid for the mandrel is fed through passages in the spokes.
GB28494/53A 1953-12-15 1953-12-15 Improvements in or relating to the manufacture of articles of plastic material for example, drain pipes and guttering by extrusion Expired GB810421A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB28494/53A GB810421A (en) 1953-12-15 1953-12-15 Improvements in or relating to the manufacture of articles of plastic material for example, drain pipes and guttering by extrusion

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB28494/53A GB810421A (en) 1953-12-15 1953-12-15 Improvements in or relating to the manufacture of articles of plastic material for example, drain pipes and guttering by extrusion

Publications (1)

Publication Number Publication Date
GB810421A true GB810421A (en) 1959-03-18

Family

ID=10276521

Family Applications (1)

Application Number Title Priority Date Filing Date
GB28494/53A Expired GB810421A (en) 1953-12-15 1953-12-15 Improvements in or relating to the manufacture of articles of plastic material for example, drain pipes and guttering by extrusion

Country Status (1)

Country Link
GB (1) GB810421A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104441543A (en) * 2014-11-27 2015-03-25 涂兴家 Heating extrusion device for fully-automatic rattan making machine
CN114347425A (en) * 2022-01-06 2022-04-15 浙江龙财塑业有限公司 Production system and production method of drain pipe
CN117507305A (en) * 2024-01-08 2024-02-06 福建宏协承汽车部件有限公司 Multi-runner anti-collision strip integrated forming extrusion die

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104441543A (en) * 2014-11-27 2015-03-25 涂兴家 Heating extrusion device for fully-automatic rattan making machine
CN114347425A (en) * 2022-01-06 2022-04-15 浙江龙财塑业有限公司 Production system and production method of drain pipe
CN114347425B (en) * 2022-01-06 2022-10-14 浙江龙财塑业有限公司 Production system and production method of drain pipe
CN117507305A (en) * 2024-01-08 2024-02-06 福建宏协承汽车部件有限公司 Multi-runner anti-collision strip integrated forming extrusion die
CN117507305B (en) * 2024-01-08 2024-03-15 福建宏协承汽车部件有限公司 Multi-runner anti-collision strip integrated forming extrusion die

Similar Documents

Publication Publication Date Title
US2366417A (en) Continuous extrusion molding of plastics
US2512844A (en) Machine for extruding plastic tubes
US2386966A (en) High-frequency electrostatic heating of plastics
US2541201A (en) Method of extrusion
US2724860A (en) Method of and machine for blowing hollow articles
GB563121A (en) Improvements in or relating to method of and apparatus for shaping plastics by extrusion
US2191882A (en) Plastic extrusion molding machine
US1902295A (en) Extruding machine
GB810421A (en) Improvements in or relating to the manufacture of articles of plastic material for example, drain pipes and guttering by extrusion
US3454695A (en) Method of forming coiled plastic hose
GB606880A (en) Improvements relating to the fabrication of extruded thermoplastic articles
US2583329A (en) Method and apparatus for giving an internal gloss finish to a tube of heat plastic material
US3178769A (en) Machine for fabrication of moldable material
US2344176A (en) Method of and machine for molding plastics
US2309943A (en) Multiple circuit heat transfer
ES187134U (en) Device for the conformation by extrusion of tubes of thermoplastic material. (Machine-translation by Google Translate, not legally binding)
GB902221A (en) Improvements in or relating to the production of extruded products such as tubes
GB714194A (en) Improvements in or relating to apparatus for the extrusion of thermoplastic material
ES346878A1 (en) Tube extrusion apparatus and method
US3351980A (en) Blow molding apparatus
US2360000A (en) Injection molding unit
GB1000235A (en) Heat exchange roll
US2790203A (en) Pre-plasticizing unit for use with a plastic molding machine
US2231281A (en) Feeding device for molding machines
US3274317A (en) Method and apparatus for extrusion of plastic material