JPS5554239A - Production of case for portable watch - Google Patents

Production of case for portable watch

Info

Publication number
JPS5554239A
JPS5554239A JP12585578A JP12585578A JPS5554239A JP S5554239 A JPS5554239 A JP S5554239A JP 12585578 A JP12585578 A JP 12585578A JP 12585578 A JP12585578 A JP 12585578A JP S5554239 A JPS5554239 A JP S5554239A
Authority
JP
Japan
Prior art keywords
ingate
entire circumference
case band
casting
case
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
JP12585578A
Other languages
Japanese (ja)
Inventor
Kotaro Kashima
Seizo Masuda
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.)
Seiko Instruments Inc
Original Assignee
Seiko Instruments Inc
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 Seiko Instruments Inc filed Critical Seiko Instruments Inc
Priority to JP12585578A priority Critical patent/JPS5554239A/en
Publication of JPS5554239A publication Critical patent/JPS5554239A/en
Pending legal-status Critical Current

Links

Landscapes

  • Molds, Cores, And Manufacturing Methods Thereof (AREA)

Abstract

PURPOSE: To make possible the improvement in product yield and the casting of thin-wall non-circular cases by forming an ingate to an integral continuous shape.
CONSTITUTION: An ingate 2 is installed to the entire circumference of the inside surface of a case band or the entire circumference of the bottom of the case band. Molten metal is simultaneously poured and cast from the ingate 2 provided to the entire circumference of the case band 1. As a result, feeding effect becomes higher than before and the difference in the rates of cooling becomes less, thus suppressing shrinkage distortion becomes feasible. In addition, continuous machining may be employed for removing the ingate after casting, there is the effect of higher tool life and shorter working time.
COPYRIGHT: (C)1980,JPO&Japio
JP12585578A 1978-10-12 1978-10-12 Production of case for portable watch Pending JPS5554239A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12585578A JPS5554239A (en) 1978-10-12 1978-10-12 Production of case for portable watch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12585578A JPS5554239A (en) 1978-10-12 1978-10-12 Production of case for portable watch

Publications (1)

Publication Number Publication Date
JPS5554239A true JPS5554239A (en) 1980-04-21

Family

ID=14920601

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12585578A Pending JPS5554239A (en) 1978-10-12 1978-10-12 Production of case for portable watch

Country Status (1)

Country Link
JP (1) JPS5554239A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104117633A (en) * 2014-08-01 2014-10-29 浙江振义汽车部件有限公司 Pouring cap mouth structure for thermolator shell mould

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104117633A (en) * 2014-08-01 2014-10-29 浙江振义汽车部件有限公司 Pouring cap mouth structure for thermolator shell mould

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