JPS56151539A - Method and device for injection molding of rod body such as crayon or the like - Google Patents

Method and device for injection molding of rod body such as crayon or the like

Info

Publication number
JPS56151539A
JPS56151539A JP5547680A JP5547680A JPS56151539A JP S56151539 A JPS56151539 A JP S56151539A JP 5547680 A JP5547680 A JP 5547680A JP 5547680 A JP5547680 A JP 5547680A JP S56151539 A JPS56151539 A JP S56151539A
Authority
JP
Japan
Prior art keywords
cavity
core pin
resin
nozzle
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
JP5547680A
Other languages
Japanese (ja)
Inventor
Shigeru Saito
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.)
Pentel Co Ltd
Original Assignee
Pentel 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 Pentel Co Ltd filed Critical Pentel Co Ltd
Priority to JP5547680A priority Critical patent/JPS56151539A/en
Publication of JPS56151539A publication Critical patent/JPS56151539A/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
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/46—Means for plasticising or homogenising the moulding material or forcing it into the mould
    • B29C45/56—Means for plasticising or homogenising the moulding material or forcing it into the mould using mould parts movable during or after injection, e.g. injection-compression moulding
    • 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
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/46—Means for plasticising or homogenising the moulding material or forcing it into the mould
    • 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
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/46—Means for plasticising or homogenising the moulding material or forcing it into the mould
    • B29C45/56—Means for plasticising or homogenising the moulding material or forcing it into the mould using mould parts movable during or after injection, e.g. injection-compression moulding
    • B29C2045/5695—Means for plasticising or homogenising the moulding material or forcing it into the mould using mould parts movable during or after injection, e.g. injection-compression moulding using a movable mould part for continuously increasing the volume of the mould cavity to its final dimension during the whole injection step

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Inks, Pencil-Leads, Or Crayons (AREA)

Abstract

PURPOSE:To obtain a resin form uniform and not broken easily by a method wherein a core pin is inserted within a cavity beforehand and the resin is filled into the cavity under injecting the resin from the tip end of the core pin and withdrawing the core pin from the cavity. CONSTITUTION:The base of the core pin 6 is secured to a fixed side retainner plate 5 connected to the nozzle of an injection molding machine and the core pin 6 is protruded. A penetrating hole 7 is provided in this core pin 6 and the hole 7 is communicated with a resin pouring port 1a at the side of the nozzle. The cavity 8a is provided in a cavity plate 8 slidable with respect to a guide pin 2. At first, the core pin 6 is being fitted within the cavity 8a, then, the cavity plate 8 is moved into the direction opposite to the nozzle under injecting the resin into the cavity 8a from the penetrating hole 7 and the resin is filled in the cavity 8a to mold it. When the cavity plate 8a is moved further after the injected resin is cured, the form adhered to the tip end of the core pin 6 may be withdrawn from the cavity 8a.
JP5547680A 1980-04-28 1980-04-28 Method and device for injection molding of rod body such as crayon or the like Pending JPS56151539A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5547680A JPS56151539A (en) 1980-04-28 1980-04-28 Method and device for injection molding of rod body such as crayon or the like

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5547680A JPS56151539A (en) 1980-04-28 1980-04-28 Method and device for injection molding of rod body such as crayon or the like

Publications (1)

Publication Number Publication Date
JPS56151539A true JPS56151539A (en) 1981-11-24

Family

ID=12999654

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5547680A Pending JPS56151539A (en) 1980-04-28 1980-04-28 Method and device for injection molding of rod body such as crayon or the like

Country Status (1)

Country Link
JP (1) JPS56151539A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6440349B1 (en) * 2000-03-11 2002-08-27 Wallace E. Johnson Process and apparatus for candle-making

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6440349B1 (en) * 2000-03-11 2002-08-27 Wallace E. Johnson Process and apparatus for candle-making

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