JPS5557444A - Screw head - Google Patents

Screw head

Info

Publication number
JPS5557444A
JPS5557444A JP13026778A JP13026778A JPS5557444A JP S5557444 A JPS5557444 A JP S5557444A JP 13026778 A JP13026778 A JP 13026778A JP 13026778 A JP13026778 A JP 13026778A JP S5557444 A JPS5557444 A JP S5557444A
Authority
JP
Japan
Prior art keywords
screws
equal
screw heads
same direction
breaker plate
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.)
Pending
Application number
JP13026778A
Other languages
Japanese (ja)
Inventor
Kikuo Tamura
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.)
Shibaura Machine Co Ltd
Original Assignee
Toshiba Machine 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 Toshiba Machine Co Ltd filed Critical Toshiba Machine Co Ltd
Priority to JP13026778A priority Critical patent/JPS5557444A/en
Publication of JPS5557444A publication Critical patent/JPS5557444A/en
Pending 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
    • B29C48/395—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
    • B29C48/40—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 using two or more parallel screws or at least two parallel non-intermeshing screws, e.g. twin screw extruders
    • B29C48/405—Intermeshing co-rotating screws
    • 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

Landscapes

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

Abstract

PURPOSE:To prevent resin stagnation and improve agitation by forming the screw heads of the same direction rotating type two shaft extruding machine in such a way that they may have elliptic cross-sectional forms, have a specified length and their end faces may have roof forms and further may be set perpendicular to each other. CONSTITUTION:Screw heads 14 and 15 are fixed to screws 11 and 12 which rotate in the same direction. The screw heads 14 and 15 are formed to have an elliptic cross-sectional form whose major axis is equal to the outer diameter D of the screws 11 and 12, and whose minor axis is equal to the root diameter d of the screws 11 and 12, have an axial length L equal to (1/2-1/4)D and have the end surfaces facing a breaker plate 16 of a roof form consisting of an edge a equal to the major axis D and two faces sloping to the minor axis d. The screw heads are fixed to the screws 11 and 12 with screws so that the edges a may become perpendicular to each other and the distance to the breaker plate 16 may be 5mm.
JP13026778A 1978-10-23 1978-10-23 Screw head Pending JPS5557444A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13026778A JPS5557444A (en) 1978-10-23 1978-10-23 Screw head

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13026778A JPS5557444A (en) 1978-10-23 1978-10-23 Screw head

Publications (1)

Publication Number Publication Date
JPS5557444A true JPS5557444A (en) 1980-04-28

Family

ID=15030189

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13026778A Pending JPS5557444A (en) 1978-10-23 1978-10-23 Screw head

Country Status (1)

Country Link
JP (1) JPS5557444A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57156351U (en) * 1981-03-26 1982-10-01
EP1935611A1 (en) * 2006-12-22 2008-06-25 Coperion Werner & Pfleiderer GmbH & Co. KG Extruder tip for high viscous material
US7648357B2 (en) 2006-11-23 2010-01-19 Coperion Gmbh Extruder

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57156351U (en) * 1981-03-26 1982-10-01
US7648357B2 (en) 2006-11-23 2010-01-19 Coperion Gmbh Extruder
EP1935611A1 (en) * 2006-12-22 2008-06-25 Coperion Werner & Pfleiderer GmbH & Co. KG Extruder tip for high viscous material

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