| 摘要 |
1,158,158. Injection moulding containers &c. COLUMBIAN CARBON CO. 2 Dec., 1966 [3 Dec., 1965], No. 54172/66. Heading B5A. A method of moulding a plastics article, e.g. a container or cabinet, comprises injection moulding a frame on a core in one mould, the frame having a plurality of openings therethrough, placing the core and frame thereon in another mould and then injecting plastics material of a different colour or composition to fill spaces within the frame members to form the container. An indexable, reciprocable lower platen 32 supports three lower mould members 54, 56, 58 while an upper platen 30 supports two downwardly depending upper mould members 60, 62. Two injection units 34, 44 (Fig. 6) cooperate with conduits 42, 52, respectively. In operation, the platen 32 is indexed to align mould members 54, 58 with members 60, 62 respectively and then raised. Movable segments 72, 77 engage guide portions 64 while inclined pegs 86, 94 on mould bases 54, 58 engage bores 84, 92, respectively, to facilitate closing. When the injected plastics material has hardened, platen 32 is lowered, segments 72, 77 being guided apart by the pegs 86, 94 and then the platen is indexed to move the lower mould members on by 120 degrees. A completed article is removed from mould member 58 and the cycle is repeated. |
