JPS5559943A - Plastic molding screw - Google Patents

Plastic molding screw

Info

Publication number
JPS5559943A
JPS5559943A JP13243178A JP13243178A JPS5559943A JP S5559943 A JPS5559943 A JP S5559943A JP 13243178 A JP13243178 A JP 13243178A JP 13243178 A JP13243178 A JP 13243178A JP S5559943 A JPS5559943 A JP S5559943A
Authority
JP
Japan
Prior art keywords
screw
line
divided
configuration
shaft
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.)
Granted
Application number
JP13243178A
Other languages
Japanese (ja)
Other versions
JPS6128499B2 (en
Inventor
Misoji Hasegawa
Taketoshi Ishikawa
Fumitaka Tsuchiya
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 JP13243178A priority Critical patent/JPS5559943A/en
Publication of JPS5559943A publication Critical patent/JPS5559943A/en
Publication of JPS6128499B2 publication Critical patent/JPS6128499B2/ja
Granted 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
    • B29C48/62—Screws characterised by the shape of the thread channel, e.g. U-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

Landscapes

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

Abstract

PURPOSE:To provide the subject screw of high performances, capable of obtaining sufficient kneading effects and the increase of the extrusion quantity while preventing generation of excessive heat of a plastic material, which has imparted a specific deformation to the configuration of screw groove. CONSTITUTION:A screw 1 is divided between pitches in three parts along a screw shaft 2, and the root diameter of the divided part varies repeatedly along the screw flight, the axis 6 of the root diameter part being inclined at an angle theta relative to the shaft 2. The root diameters of divided parts 3 and 5 repeat variation same as the root diameters along the screw flight at both ends of the part 4, and become parallel to the shaft 2. The groove configuration in line A-A and that in line C-C having 1/4 lead interval are equal to each other, and the groove configuration in line B-B and that in line D-D ae symmetric in sections. Kneading is accelerated by the variation in complicate configuration and shearing operation at border lines 7 and 8, and excessive temperature rise is prevented by the compressive operation at the divided part 3 and the relaxing operation at the divided part 5.
JP13243178A 1978-10-27 1978-10-27 Plastic molding screw Granted JPS5559943A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13243178A JPS5559943A (en) 1978-10-27 1978-10-27 Plastic molding screw

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13243178A JPS5559943A (en) 1978-10-27 1978-10-27 Plastic molding screw

Publications (2)

Publication Number Publication Date
JPS5559943A true JPS5559943A (en) 1980-05-06
JPS6128499B2 JPS6128499B2 (en) 1986-06-30

Family

ID=15081209

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13243178A Granted JPS5559943A (en) 1978-10-27 1978-10-27 Plastic molding screw

Country Status (1)

Country Link
JP (1) JPS5559943A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5328656A (en) * 1976-08-31 1978-03-17 Ube Industries Resin molding screw

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5328656A (en) * 1976-08-31 1978-03-17 Ube Industries Resin molding screw

Also Published As

Publication number Publication date
JPS6128499B2 (en) 1986-06-30

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