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GB1175127A - Method and Apparatus for Forming Hollow Tubing - Google Patents

Method and Apparatus for Forming Hollow Tubing

Info

Publication number
GB1175127A
GB1175127A GB53714/67A GB5371467A GB1175127A GB 1175127 A GB1175127 A GB 1175127A GB 53714/67 A GB53714/67 A GB 53714/67A GB 5371467 A GB5371467 A GB 5371467A GB 1175127 A GB1175127 A GB 1175127A
Authority
GB
United Kingdom
Prior art keywords
section
die
thermoplastic material
extrusion
mandrel
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
GB53714/67A
Inventor
Clement Vanus Fogelberg
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.)
Ball Corp
Original Assignee
Ball Brothers Co
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 Ball Brothers Co filed Critical Ball Brothers Co
Priority to GB53714/67A priority Critical patent/GB1175127A/en
Publication of GB1175127A publication Critical patent/GB1175127A/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
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/50—Details of extruders
    • B29C48/505—Screws
    • B29C48/53—Screws having a varying channel depth, e.g. varying the diameter of the longitudinal screw trunk
    • 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
    • B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
    • 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
    • B29C48/635—Eccentrically rotating screws; Screws revolving around an axis other than their central axis
    • 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
    • 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

Landscapes

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

Abstract

1,175,127. Extruding tubes. BALL BROS. CO. Inc. 25 Nov., 1967, No. 53714/67. Heading B5A. Seamless tubes of thermoplastic material are made by forcing thermoplastic material tangentially from an inlet passage into an enlarged die cavity which constricts the flow of material less than the inlet passage so that the material mixes with material already present, and extruding a hollow tube through the extrusion orifice. In the apparatus shown, thermoplastic material from the extruder screw housing 10 is forced through passage 52 and directed tangentially into the die by adapter 70. The die comprises a cylindrical outer section 78 and two tapering outer sections 87, 94; the latter sections being rigidly fixed together and adjustable transverse to the direction of extrusion by bolts 92. The mandrel comprises an upper section 103, a lower section 122 and an intermediate slide bearing 124, 132; the lower section being held in place by a rod 128 passing through the upper section 103 and die 78 so that the lower section can be vertically reciprocated by a cam acting on top of rod 128. Rotation of the upper mandrel section is prevented by bolt 156. The thermoplastic material is forced tangentially into the enlarged section 142 of the die and mixes with material already present. Passage through the narrow bore 144 into wider bore 146 causes further mixing and extrusion from the orifice 150 is aided by reciprocation of the mandrel 122. The tube can be freed from any tendency to curl when extruded by transverse movement of the lower die section 94 to vary the diameter of the extrusion orifice at points on its circumference.
GB53714/67A 1967-11-25 1967-11-25 Method and Apparatus for Forming Hollow Tubing Expired GB1175127A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB53714/67A GB1175127A (en) 1967-11-25 1967-11-25 Method and Apparatus for Forming Hollow Tubing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB53714/67A GB1175127A (en) 1967-11-25 1967-11-25 Method and Apparatus for Forming Hollow Tubing

Publications (1)

Publication Number Publication Date
GB1175127A true GB1175127A (en) 1969-12-23

Family

ID=10468740

Family Applications (1)

Application Number Title Priority Date Filing Date
GB53714/67A Expired GB1175127A (en) 1967-11-25 1967-11-25 Method and Apparatus for Forming Hollow Tubing

Country Status (1)

Country Link
GB (1) GB1175127A (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105934324A (en) * 2014-05-08 2016-09-07 东芝机械株式会社 Screw for extruder, extruder, and extrusion method
US10967554B2 (en) 2014-05-08 2021-04-06 Toshiba Kikai Kabushiki Kaisha Extruder screw having paths within the screw, extruder, and extrusion method
CN112706278A (en) * 2020-12-24 2021-04-27 湖北科技学院 Large-scale mica pipe production facility
US11220022B2 (en) 2014-04-24 2022-01-11 Shibaura Machine Co., Ltd. Extruder screw having paths within the screw, extruder, and extrusion method
US11224991B2 (en) 2014-04-24 2022-01-18 Shibaura Machine Co., Ltd. Extruder screw having paths within the screw, extruder, and extrusion method
US11229889B2 (en) 2015-04-28 2022-01-25 Shibaura Machine Co., Ltd. Extruder screw with alternately-arranged conveyance portions and extruders and extrusion methods using the extruder screw
US11230033B2 (en) 2015-04-28 2022-01-25 Shibaura Machine Co., Ltd. Extruder screw including conveyance portions and paths within the conveyance portions, extruder, and extrusion method
CN114714590A (en) * 2022-04-12 2022-07-08 南京航空航天大学 Extrusion forming device and process for Nafion pipe
CN114801117A (en) * 2022-04-11 2022-07-29 嘉兴易达新材料科技股份有限公司 Double-end screw for plastic extruder
US11565440B2 (en) 2014-05-08 2023-01-31 Shibaura Machine Co., Ltd. Kneading apparatus with first and second extruders

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11220022B2 (en) 2014-04-24 2022-01-11 Shibaura Machine Co., Ltd. Extruder screw having paths within the screw, extruder, and extrusion method
US11224991B2 (en) 2014-04-24 2022-01-18 Shibaura Machine Co., Ltd. Extruder screw having paths within the screw, extruder, and extrusion method
US11565440B2 (en) 2014-05-08 2023-01-31 Shibaura Machine Co., Ltd. Kneading apparatus with first and second extruders
CN105934324B (en) * 2014-05-08 2018-03-30 东芝机械株式会社 Screw for extruder, extruder and extrusion method
US10967554B2 (en) 2014-05-08 2021-04-06 Toshiba Kikai Kabushiki Kaisha Extruder screw having paths within the screw, extruder, and extrusion method
CN105934324A (en) * 2014-05-08 2016-09-07 东芝机械株式会社 Screw for extruder, extruder, and extrusion method
US11110638B2 (en) 2014-05-08 2021-09-07 Shibaura Machine Co., Ltd. Extruder screw having paths within the screw, extruder, and extrusion method
US11813785B2 (en) 2014-05-08 2023-11-14 Shibaura Machine Co., Ltd. Extruder screw having paths within the screw, extruder, and extrusion method
US11752682B2 (en) 2014-05-08 2023-09-12 Shibaura Machine Co., Ltd. Extruder screw having paths within the screw, extruder, and extrusion method
US11229889B2 (en) 2015-04-28 2022-01-25 Shibaura Machine Co., Ltd. Extruder screw with alternately-arranged conveyance portions and extruders and extrusion methods using the extruder screw
US11230033B2 (en) 2015-04-28 2022-01-25 Shibaura Machine Co., Ltd. Extruder screw including conveyance portions and paths within the conveyance portions, extruder, and extrusion method
CN112706278A (en) * 2020-12-24 2021-04-27 湖北科技学院 Large-scale mica pipe production facility
CN114801117A (en) * 2022-04-11 2022-07-29 嘉兴易达新材料科技股份有限公司 Double-end screw for plastic extruder
CN114801117B (en) * 2022-04-11 2024-02-13 嘉兴易达新材料科技股份有限公司 Double-end screw rod for plastic extruder
CN114714590A (en) * 2022-04-12 2022-07-08 南京航空航天大学 Extrusion forming device and process for Nafion pipe

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees