JPS55139244A - Control of transfer molding machine - Google Patents

Control of transfer molding machine

Info

Publication number
JPS55139244A
JPS55139244A JP4725479A JP4725479A JPS55139244A JP S55139244 A JPS55139244 A JP S55139244A JP 4725479 A JP4725479 A JP 4725479A JP 4725479 A JP4725479 A JP 4725479A JP S55139244 A JPS55139244 A JP S55139244A
Authority
JP
Japan
Prior art keywords
plunger
quickly
sleeve
resin
completely
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
JP4725479A
Other languages
Japanese (ja)
Other versions
JPS5856344B2 (en
Inventor
Susumu Tsujiku
Aizo Kaneda
Junichi Saeki
Takeshi Shimizu
Keizo Otsuki
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 JP4725479A priority Critical patent/JPS5856344B2/en
Publication of JPS55139244A publication Critical patent/JPS55139244A/en
Publication of JPS5856344B2 publication Critical patent/JPS5856344B2/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/02—Transfer moulding, i.e. transferring the required volume of moulding material by a plunger from a "shot" cavity into a mould cavity

Abstract

PURPOSE:To remove the burrs of molded resin automatically and quickly by a method wherein after resin is hardened and completing the lifting stroke of a plunger, the plunger thereof is lowered quickly to run through the sleeve completely, and, further, lifting the plunger thereof quickly. CONSTITUTION:In transfer molding, an electronic circuit element such as IC, after clamping the bottom part 1 and the top part 3, a plunger 5 is lowered to allow the resin tablet 2 to pass through the sleeve 4 to fill into the cavity 10 for hardening. After the resin is hardened, lifting the plunger 5, and opening the die, the plunger thereof 5 is lowered quickly in order to allow said plunger 5 to run repeatedly through the sleeve 4 completely for removing the burrs completely sticked to said plunger 5 and the sleeve 4, said plunger 5 is lifted quickly. The plunger 5 and the bottom part 1 are controlled by the cylinders 6, 7 connected with a hydraulic circuit 8 controlled by an electronic circuit 9.
JP4725479A 1979-04-19 1979-04-19 Control method of transfer molding machine Expired JPS5856344B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4725479A JPS5856344B2 (en) 1979-04-19 1979-04-19 Control method of transfer molding machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4725479A JPS5856344B2 (en) 1979-04-19 1979-04-19 Control method of transfer molding machine

Publications (2)

Publication Number Publication Date
JPS55139244A true JPS55139244A (en) 1980-10-30
JPS5856344B2 JPS5856344B2 (en) 1983-12-14

Family

ID=12770126

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4725479A Expired JPS5856344B2 (en) 1979-04-19 1979-04-19 Control method of transfer molding machine

Country Status (1)

Country Link
JP (1) JPS5856344B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6162010U (en) * 1984-09-28 1986-04-26
JPH063725U (en) * 1991-01-30 1994-01-18 スズキ株式会社 Car instrument panel

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6162010U (en) * 1984-09-28 1986-04-26
JPH063725U (en) * 1991-01-30 1994-01-18 スズキ株式会社 Car instrument panel

Also Published As

Publication number Publication date
JPS5856344B2 (en) 1983-12-14

Similar Documents

Publication Publication Date Title
DE2966918D1 (en) Pressure generating device and use thereof
DE3163574D1 (en) Method and apparatus for producing a core for a root-filled prepared tooth
CA2087067A1 (en) Method and device for the fabrication of perforated blocks
US4388265A (en) Process and apparatus for molding plastics
JPS55139244A (en) Control of transfer molding machine
JPS56121748A (en) Injection molding method
JPS55139240A (en) Resin molding method
JPS5538088A (en) Resin sealing device
JPS56142047A (en) Method and device for molding of formed body
DE59106059D1 (en) METHOD AND DEVICE FOR THE PRODUCTION OF MOLDED PARTS.
JPS5649207A (en) Molding die
JPS5492059A (en) Multi-pot mold device
JPS55139241A (en) Resin molding machine of substrate
JPS6459925A (en) Method and device for resin-sealed formation of semiconductor element
SU138366A1 (en) Method of forming articles with deep holes of plastics
JPS5791234A (en) Plastic molding machine with insert
JPS5674912A (en) Manufacture of mold winding
JPS6484860A (en) Method for manufacture of synthetic resin container lid
JPS5574848A (en) Method of providing hole in synthetic resin mold product
JPS55159932A (en) Preparation of wooden top board
JPS5527252A (en) Simultaneous forming device
JPS5791830A (en) Metallic mold replacement method on metallic mold carrying truck for transfer press
JPS574132A (en) Manufacture of semiconductor device
JPS56136270A (en) Casting device
JPS56128645A (en) Molding machine for hollow mold