JPS5675814A - Metal mold for shaping form in plastic - Google Patents

Metal mold for shaping form in plastic

Info

Publication number
JPS5675814A
JPS5675814A JP15250079A JP15250079A JPS5675814A JP S5675814 A JPS5675814 A JP S5675814A JP 15250079 A JP15250079 A JP 15250079A JP 15250079 A JP15250079 A JP 15250079A JP S5675814 A JPS5675814 A JP S5675814A
Authority
JP
Japan
Prior art keywords
air
mold
shaped material
chip
cavity
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
JP15250079A
Other languages
Japanese (ja)
Inventor
Naotake Ebinuma
Aizo Kaneda
Masayoshi Aoki
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 JP15250079A priority Critical patent/JPS5675814A/en
Publication of JPS5675814A publication Critical patent/JPS5675814A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To prevent changes in dimensions and damage caused to a shaped material when detaching it from a metal mold and effectuate high quality and yield rate by incorporating an air ejector chip in the metal sleeve of a metal mold.
CONSTITUTION: An air ejector chip 3 is incorporated with a metal mold heretofore in use in a position where a projected pin passes through the mold. The upper surface of the chip is leveled with that of the cavity surface 13a of a lower mold 8A, while its lower surface is opened to an air passageway 9 made in the mold 8A, so that the chip pierces the lower mold. If pressurized air is sent through the passageway 9 from the outside, it reaches the interface between a shaped material 7 and a cavity 13 (that is, the cavity surface 13a) via the air-circulating passageway 4 of the air ejector chip 3. The air pressure is used to detach the shaped material 7 from the cavity surface 13a. Since the pressurized air is applied to the whole surface of the shaped material 7 touching the cavity, the external force is reduced. Thus, changes in dimensions and shape do not occur because excessive stress is not added to the shaped material 7.
COPYRIGHT: (C)1981,JPO&Japio
JP15250079A 1979-11-27 1979-11-27 Metal mold for shaping form in plastic Pending JPS5675814A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15250079A JPS5675814A (en) 1979-11-27 1979-11-27 Metal mold for shaping form in plastic

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15250079A JPS5675814A (en) 1979-11-27 1979-11-27 Metal mold for shaping form in plastic

Publications (1)

Publication Number Publication Date
JPS5675814A true JPS5675814A (en) 1981-06-23

Family

ID=15541815

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15250079A Pending JPS5675814A (en) 1979-11-27 1979-11-27 Metal mold for shaping form in plastic

Country Status (1)

Country Link
JP (1) JPS5675814A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63197613A (en) * 1986-11-24 1988-08-16 ポリテックス　プラスチック　ソシエテ　アノニム Method and device for molding plastic material, particularly, duroplastic compounding material
US5299624A (en) * 1992-08-06 1994-04-05 Kohler Co. Fluid assisted casting apparatus
DE102013206982A1 (en) * 2013-04-18 2014-10-23 Bayerische Motoren Werke Aktiengesellschaft Press tool with air ejector
DE102013010380A1 (en) * 2013-06-21 2014-12-24 Audi Ag Ejecting and evacuating device for a tool cavity of a tool mold and device and method for producing a plastic molding

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4830134A (en) * 1971-08-23 1973-04-20
JPS5327926U (en) * 1976-08-16 1978-03-09

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4830134A (en) * 1971-08-23 1973-04-20
JPS5327926U (en) * 1976-08-16 1978-03-09

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63197613A (en) * 1986-11-24 1988-08-16 ポリテックス　プラスチック　ソシエテ　アノニム Method and device for molding plastic material, particularly, duroplastic compounding material
US5299624A (en) * 1992-08-06 1994-04-05 Kohler Co. Fluid assisted casting apparatus
DE102013206982A1 (en) * 2013-04-18 2014-10-23 Bayerische Motoren Werke Aktiengesellschaft Press tool with air ejector
DE102013010380A1 (en) * 2013-06-21 2014-12-24 Audi Ag Ejecting and evacuating device for a tool cavity of a tool mold and device and method for producing a plastic molding

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