JPS5519464A - Pressure balancing method in liquid pressure bulging device - Google Patents

Pressure balancing method in liquid pressure bulging device

Info

Publication number
JPS5519464A
JPS5519464A JP9252778A JP9252778A JPS5519464A JP S5519464 A JPS5519464 A JP S5519464A JP 9252778 A JP9252778 A JP 9252778A JP 9252778 A JP9252778 A JP 9252778A JP S5519464 A JPS5519464 A JP S5519464A
Authority
JP
Japan
Prior art keywords
pressure
liquid pressure
lateral
forcing
current
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.)
Granted
Application number
JP9252778A
Other languages
Japanese (ja)
Other versions
JPS5646450B2 (en
Inventor
Osamu Usami
Kimio Inoue
Akio Tsuyuki
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.)
NIPPON BARUJI KOGYO KK
Nippon Bulge Ind Ltd
Original Assignee
NIPPON BARUJI KOGYO KK
Nippon Bulge Ind 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 NIPPON BARUJI KOGYO KK, Nippon Bulge Ind Ltd filed Critical NIPPON BARUJI KOGYO KK
Priority to JP9252778A priority Critical patent/JPS5519464A/en
Publication of JPS5519464A publication Critical patent/JPS5519464A/en
Publication of JPS5646450B2 publication Critical patent/JPS5646450B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Shaping Metal By Deep-Drawing, Or The Like (AREA)

Abstract

PURPOSE: To prevent the sealing at the end of the blank pipe from being ruptured at the molding by converting the primary side liquid pressure of a booster which generates bulge liquid pressure to voltage and current, then controlling lateral-forcing liquid pressure in proportion to the abovementioned current changing with the ratios of blank pipe area and the pressure receiving area of the lateral-forcing liquid pressure.
CONSTITUTION: A pressure head 11 which converts the primary side liquid pressure P1 of a booster 8 is connected to the primary side of the booster 8. To this pressure head 11 is connected an amplifier 12 by way of a variable resistance 13 which sets balance ratio n=(lateral-forcing area A2/inside area of blank pipe A1). Further this is connected to the proportional electromagnetic relief valve 14 being the pilot relief means of the pressure regulator 15 in the lateral-forcing circuit to convert the primary liquid pressure P1 to voltage by the pressure head 11. This voltage is next converted to current by the amplifier 12. At this time, the balance ratio n is beforehand set by the variable resistance 13. Next, the converted current is supplied to the relief valve 14 to control the lateral-forcing liquid pressure P3 whereby this pressure P3 is made proportional to the change in the bulge liquid pressure P2.
COPYRIGHT: (C)1980,JPO&Japio
JP9252778A 1978-07-31 1978-07-31 Pressure balancing method in liquid pressure bulging device Granted JPS5519464A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9252778A JPS5519464A (en) 1978-07-31 1978-07-31 Pressure balancing method in liquid pressure bulging device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9252778A JPS5519464A (en) 1978-07-31 1978-07-31 Pressure balancing method in liquid pressure bulging device

Publications (2)

Publication Number Publication Date
JPS5519464A true JPS5519464A (en) 1980-02-12
JPS5646450B2 JPS5646450B2 (en) 1981-11-04

Family

ID=14056808

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9252778A Granted JPS5519464A (en) 1978-07-31 1978-07-31 Pressure balancing method in liquid pressure bulging device

Country Status (1)

Country Link
JP (1) JPS5519464A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107427891A (en) * 2015-03-31 2017-12-01 住友重机械工业株式会社 Shaped device

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0665126U (en) * 1993-02-23 1994-09-13 栄一 小林 Water drop removal device for vehicles

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107427891A (en) * 2015-03-31 2017-12-01 住友重机械工业株式会社 Shaped device

Also Published As

Publication number Publication date
JPS5646450B2 (en) 1981-11-04

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