Mold for compression molding of thermosetting resin

Abstract

Abstract PURPOSE:To remove reliably air in a molding space and gas included in a molding material during a period until completion of mold clamping, by a method wherein timing when ventilation is begun actually by interrupting in an airtight state, the molding space is established freely according to a form of a molded product without being restricted by timing of the start of compression. CONSTITUTION:A fitting groove 16 surrounding the outer circumference of a recessed part 4 is formed on the bottom 2a of a top fore 2 of a movable side and a cylindrical movable member 17 is fitted into the fitting groove 16 slidably in a vertical direction. The movable member 17 is energized downward always through pressing by a spring 18 and projected retractably through the bottom 2a of the top force 2. The tip part of the projected movable member 17 is confronted with the top 3a of a bottom force 3. Then a seal member 19 made of rubber, for example, in an annular form is fitted to the projected tip part of the movable member 17. The seal member 19 is constituted so that at the time when the top force 2 descends, the seal member 19 interrupts a molding space 6 in an airtight state from the outside by contacting to the top 3a of the bottom force 3 with pressure and the seal member 19 contacts to the top 3a of the bottom force 3 with pressure and the seal member 19 contacts to the top 3a of the bottom force 3 with pressure before a molding material A comes into contact with a mold face 4a of the top force 2.

Inventors

• 👤 Kojiro Saito
• 👤 済藤　孝次郎
• 👤 Kiyoshi Endo
• 👤 遠藤　清士
• 👤 Kozo Nagayama
• 👤 浩三 永山

Bibliographic Details