Mold for casting

Abstract

Abstract PURPOSE:To make possible selection of suitable injecting speed by a method wherein completion of injection of resin into a mold is checked by a photo-electric tube switch sensing that rays have been shielded between glass plates located on two sides, right and left, of an air reservoir. CONSTITUTION:The resin injected from an inlet 4 comes to an air reservoir 2 through a molding cavity 3. At this time, since the resin passes between glass plates 6 arranged face to face on both right and left sides of the air reservoir 2, rays reaching the photo receiving device 8 of the photoelectric tube switch are sheltered and this displacement signal is processed at a signal processing and indicating device 9 in order to indicate completion of injection of resin. In this manner, the completion of injection of resin can be checked securely and a suitable injecting speed can be selected.

Inventors

• 👤 Yukio Ozaki
• 👤 幸夫 尾崎
• 👤 Masao Ishibashi
• 👤 石橋　政男

Bibliographic Details