JPS5764534A - Multi-color molding machine - Google Patents

Multi-color molding machine

Info

Publication number
JPS5764534A
JPS5764534A JP55140872A JP14087280A JPS5764534A JP S5764534 A JPS5764534 A JP S5764534A JP 55140872 A JP55140872 A JP 55140872A JP 14087280 A JP14087280 A JP 14087280A JP S5764534 A JPS5764534 A JP S5764534A
Authority
JP
Japan
Prior art keywords
grooves
screw
resins
cylinder
hopper
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
JP55140872A
Other languages
Japanese (ja)
Other versions
JPS6350173B2 (en
Inventor
Masao Hirozawa
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 JP55140872A priority Critical patent/JPS5764534A/en
Publication of JPS5764534A publication Critical patent/JPS5764534A/en
Publication of JPS6350173B2 publication Critical patent/JPS6350173B2/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
    • B29C48/285—Feeding the extrusion material to the extruder
    • B29C48/297—Feeding the extrusion material to the extruder at several locations, e.g. using several hoppers or using a separate additive feeding

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 miniaturize an apparatus, to lower the cost thereof, and to reduce the power to operate it, by providing a plurality of grooves in a screw within a cylinder, and mounting hoppers corresponding to the grooves to the cylinder. CONSTITUTION:A first resin 21 is charged into the first hopper 17, and a second resin 22 into the second hopper, and respective shutters 16, 18 are opened in accordance with the feed of the resins. When an electric current is passed to heaters 12 and the screw 13 is rotated, the first and second resins 21, 22 are melted and moved forward in the respective grooves 14, 15. In this case, as the different between the outer diameter of the screw 13 and the inner diameter of the cylinder 11, that is the clearance therebetween, is mimimum, the resins 21, 22 in the respective groove 14, 15 cannot go over crests of the screw 13 onto the adjacent grooves. Consequently, the first and second resins 21, 22 are melted and moved forward independently in the grooves 14, 15. Depending upon the pattern desired for the intended article, the first and second grooves 14, 15 are extended as two independent grooves to the tip of the screw 13 or the last parts of the grooves are merged into one groove. If the number of the grooves increased to for example 3 or 4, multi-color molding becomes possible.
JP55140872A 1980-10-08 1980-10-08 Multi-color molding machine Granted JPS5764534A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55140872A JPS5764534A (en) 1980-10-08 1980-10-08 Multi-color molding machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55140872A JPS5764534A (en) 1980-10-08 1980-10-08 Multi-color molding machine

Publications (2)

Publication Number Publication Date
JPS5764534A true JPS5764534A (en) 1982-04-19
JPS6350173B2 JPS6350173B2 (en) 1988-10-07

Family

ID=15278713

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55140872A Granted JPS5764534A (en) 1980-10-08 1980-10-08 Multi-color molding machine

Country Status (1)

Country Link
JP (1) JPS5764534A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6333917U (en) * 1986-08-25 1988-03-04

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53121054A (en) * 1977-03-31 1978-10-23 Toyoda Gosei Co Ltd Manufacture of steering wheel having flow patterns

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53121054A (en) * 1977-03-31 1978-10-23 Toyoda Gosei Co Ltd Manufacture of steering wheel having flow patterns

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6333917U (en) * 1986-08-25 1988-03-04

Also Published As

Publication number Publication date
JPS6350173B2 (en) 1988-10-07

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