Injection moulds

Abstract

Abstract 1,069,095. Injection moulds. FARBWERKE HOECHST A.G. Nov. 13, 1963 [Nov. 13, 1962], No. 44917/63. Heading B5A. Thermoplastic material is injected into a mould cavity through a runner 8 formed between an insert member 1 and a part 5 of the mould in which the member 1 slides. The runner 8 is connected to the mould cavity by a slot 10 (see Fig. 1a, not shown), extending over the length of the cavity or by a number of openings (13) (see especially Fig. 3a, not shown). When the mould is opened, mould parts 5 and 3 are separated by springs 6 and the member 1 slides along guide rails (2) (Fig. 1a, not shown), under the influence of springs 9 so that the sprue can be removed from the runner 8. Separation of mould parts 5, 3 is limited by cramps 7.

Inventors

No inventors recorded.

Bibliographic Details