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JPS5630811A - Forming metallic mold for plastic molding - Google Patents

Forming metallic mold for plastic molding

Info

Publication number
JPS5630811A
JPS5630811A JP10720779A JP10720779A JPS5630811A JP S5630811 A JPS5630811 A JP S5630811A JP 10720779 A JP10720779 A JP 10720779A JP 10720779 A JP10720779 A JP 10720779A JP S5630811 A JPS5630811 A JP S5630811A
Authority
JP
Japan
Prior art keywords
parts
resin
filling
divided
mold
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
JP10720779A
Other languages
Japanese (ja)
Inventor
Tsuneo Narisawa
Hideki Asano
Masaji Ogata
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP10720779A priority Critical patent/JPS5630811A/en
Publication of JPS5630811A publication Critical patent/JPS5630811A/en
Pending legal-status Critical Current

Links

Landscapes

  • Moulds For Moulding Plastics Or The Like (AREA)

Abstract

PURPOSE: To obtain a molding with a high accuracy by a method wherin a cavity part for filling resin is divided into two parts and a corner part or the like at the divided surface is finished precisely to assemble it; thereafter, the molding is formed, in a metallic mold, having a stepped post with a high accuracy on a surface thereof, such as a cylinder for a VTR or the like.
CONSTITUTION: Gates 6, which are bung holes, and a part of a resin filling section 7 are formed in a top force 4. A cavity forming section for filling the resin are divided into two parts 8, 9 and each of the sections is worked separately to finish a die face 12 and a surface corresponding to a tape running surface precisely, thereafter, the two parts are unified with bolts 10. The cavity portions 8, 9 for filling the resin are fitted into a bottom tool 5 to complete a forming mold. According to the method described above, the parts which are to be a corner 2 and a tip 3 of a VTR cylinder, for example, are never be rounded. Because, manufacturing of the mold becomes easier, an accuracy may be improved thereby.
COPYRIGHT: (C)1981,JPO&Japio
JP10720779A 1979-08-24 1979-08-24 Forming metallic mold for plastic molding Pending JPS5630811A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10720779A JPS5630811A (en) 1979-08-24 1979-08-24 Forming metallic mold for plastic molding

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10720779A JPS5630811A (en) 1979-08-24 1979-08-24 Forming metallic mold for plastic molding

Publications (1)

Publication Number Publication Date
JPS5630811A true JPS5630811A (en) 1981-03-28

Family

ID=14453189

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10720779A Pending JPS5630811A (en) 1979-08-24 1979-08-24 Forming metallic mold for plastic molding

Country Status (1)

Country Link
JP (1) JPS5630811A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0713794U (en) * 1993-08-10 1995-03-07 江崎グリコ株式会社 Food container with aeration structure

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0713794U (en) * 1993-08-10 1995-03-07 江崎グリコ株式会社 Food container with aeration structure

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