JPS5795408A - Differential forming method for synthetic resin article - Google Patents

Differential forming method for synthetic resin article

Info

Publication number
JPS5795408A
JPS5795408A JP17168980A JP17168980A JPS5795408A JP S5795408 A JPS5795408 A JP S5795408A JP 17168980 A JP17168980 A JP 17168980A JP 17168980 A JP17168980 A JP 17168980A JP S5795408 A JPS5795408 A JP S5795408A
Authority
JP
Japan
Prior art keywords
forming die
plug
edge
product
sheet
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
JP17168980A
Other languages
Japanese (ja)
Inventor
Tadashi Hashimoto
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.)
Mitsubishi Plastics Inc
Original Assignee
Mitsubishi Plastics 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 Mitsubishi Plastics Inc filed Critical Mitsubishi Plastics Inc
Priority to JP17168980A priority Critical patent/JPS5795408A/en
Publication of JPS5795408A publication Critical patent/JPS5795408A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To obtain a product free from burrs, when a synthetic resin article having a squeezed mouthpiece and an expanded body part is produced, by using a receiving edge free of a seam assembled in a forming die, and constructing the forming die in a manner such that the product as received in the forming die can be pulled out from the receiving edge.
CONSTITUTION: A synthetic resin sheet A preheated to a proper temperature is fixed with clamping frames 3, 3' at its periphery and arranged horizontally. Thereafter, a plug 1 is lowered so that the sheet A is inserted through a receiving edge ring 4 into a forming die 6. Just before an edge 2 comes in contact with an edge part 5, the plug 1 is stopped. In this state, a space between the plug 1 and the sheet A is air-sealed. Compressed air is fed into the space through a compressed air hose 1', while air is sucked through vacuum holes 7, so that the sheet A is brought into close contact with the inside surface of the forming die 6 to make a product A1. After the sheet A is formed, the plug 1 is further lowered to telescope the trimming edge 2 onto the edge part 5. Thereafter, the plug 1 is raised to open the clamping frames 3, 3', while the forming die 6 and the product A1 are lowered to separate them from the receiving edge. After the forming die 6 is opened, the product A1 is taken out from the forming die 6.
COPYRIGHT: (C)1982,JPO&Japio
JP17168980A 1980-12-05 1980-12-05 Differential forming method for synthetic resin article Pending JPS5795408A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17168980A JPS5795408A (en) 1980-12-05 1980-12-05 Differential forming method for synthetic resin article

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17168980A JPS5795408A (en) 1980-12-05 1980-12-05 Differential forming method for synthetic resin article

Publications (1)

Publication Number Publication Date
JPS5795408A true JPS5795408A (en) 1982-06-14

Family

ID=15927861

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17168980A Pending JPS5795408A (en) 1980-12-05 1980-12-05 Differential forming method for synthetic resin article

Country Status (1)

Country Link
JP (1) JPS5795408A (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4844182A (en) * 1971-01-18 1973-06-25
JPS5138331A (en) * 1974-09-30 1976-03-31 Kogyo Gijutsuin Gansuigeruno seizohoho
JPS5138345A (en) * 1974-09-30 1976-03-31 Mitsubishi Plastics Ind GOSEIJUSHISEIKEIHINNO SEIKEIHOHOOYOBI SOCHI
JPS5342786A (en) * 1976-09-29 1978-04-18 Sumitomo Heavy Industries Force detector

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4844182A (en) * 1971-01-18 1973-06-25
JPS5138331A (en) * 1974-09-30 1976-03-31 Kogyo Gijutsuin Gansuigeruno seizohoho
JPS5138345A (en) * 1974-09-30 1976-03-31 Mitsubishi Plastics Ind GOSEIJUSHISEIKEIHINNO SEIKEIHOHOOYOBI SOCHI
JPS5342786A (en) * 1976-09-29 1978-04-18 Sumitomo Heavy Industries Force detector

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