JPH02180593A - Punching device for green sheet - Google Patents

Punching device for green sheet

Info

Publication number
JPH02180593A
JPH02180593A JP33127588A JP33127588A JPH02180593A JP H02180593 A JPH02180593 A JP H02180593A JP 33127588 A JP33127588 A JP 33127588A JP 33127588 A JP33127588 A JP 33127588A JP H02180593 A JPH02180593 A JP H02180593A
Authority
JP
Japan
Prior art keywords
green sheet
peripheral side
hole
punching
punching device
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
JP33127588A
Other languages
Japanese (ja)
Inventor
Kazuo Kodama
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.)
Komatsu Ltd
Original Assignee
Komatsu 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 Komatsu Ltd filed Critical Komatsu Ltd
Priority to JP33127588A priority Critical patent/JPH02180593A/en
Publication of JPH02180593A publication Critical patent/JPH02180593A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To prevent the torn from the hole peripheral side of a green sheet to be punched by providing a peripheral side pressing part coming into contact with the green sheet in the punch guide hole of the stripper lower face at the sheet punching time.
CONSTITUTION: Punching is performed on the green sheet 4 placed on a lower die 2 by the descent of a punch 3 provided on an upper die 1. In this case, the peripheral side of the hole punched on the green sheet 4 is pressed by the peripheral side pressing part 7 provided in the hole of the punch guide 6 of the stripper 6 lower face. As a result, the torn of the peripheral side of the hole according to punching can surely be prevented.
COPYRIGHT: (C)1990,JPO&Japio
JP33127588A 1988-12-28 1988-12-28 Punching device for green sheet Pending JPH02180593A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP33127588A JPH02180593A (en) 1988-12-28 1988-12-28 Punching device for green sheet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP33127588A JPH02180593A (en) 1988-12-28 1988-12-28 Punching device for green sheet

Publications (1)

Publication Number Publication Date
JPH02180593A true JPH02180593A (en) 1990-07-13

Family

ID=18241869

Family Applications (1)

Application Number Title Priority Date Filing Date
JP33127588A Pending JPH02180593A (en) 1988-12-28 1988-12-28 Punching device for green sheet

Country Status (1)

Country Link
JP (1) JPH02180593A (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62120999A (en) * 1985-11-19 1987-06-02 Matsushita Electric Ind Co Ltd Method of perforating and processing ceramic green sheet
JPS62166034A (en) * 1986-01-17 1987-07-22 Komatsu Ltd Punching device
JPH01246100A (en) * 1988-03-24 1989-10-02 Fujitsu Ltd Boring die unit

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62120999A (en) * 1985-11-19 1987-06-02 Matsushita Electric Ind Co Ltd Method of perforating and processing ceramic green sheet
JPS62166034A (en) * 1986-01-17 1987-07-22 Komatsu Ltd Punching device
JPH01246100A (en) * 1988-03-24 1989-10-02 Fujitsu Ltd Boring die unit

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