| 摘要 |
1,139,329. Moulding expanded plastics. MASCHINENFABRIK JOHANN BUCHER. 6 May, 1966 [7 May, 1965], No. 20253/66. Heading B5A. In apparatus for moulding expandable plastics, the moulding cavity is defined between an outer mould member 10, which is mounted on a base-plate 5 on a stationary chase 3, and an inner mould member 9 which is engageable therewith, and is similarly mounted on a chase 2 displaceable on four bars 1. An outer steam heating-water cooling jacket is formed by the telescopic engagement of an inner jacket wall member 14, carried by the chase 3 and provided with a sealing ring 16, within an outer jacket member 12 carried by the chase 2, whereby the telescopic engagement and the provision of one or more intermediate spacing frames 13 between inner jacket wall member 14 and a base-plate 5 facilitates the accommodation of moulds of varying heights using the same jacket members 12, 14. An inner heating-cooling chamber 40 is provided within inner mould member 9. In an alternative embodiment, Fig. 2, not shown, the outer steam heating-water cooling jacket is formed by the abutment of a jacket member (12a), carried by chase (2) with a gasket (22) carried in the end face of a jacket member (19) which is adjustably mounted, via bolts (20) and elongated slots in the member (19), within a jacket member (14a) carried by the stationary chase (3); one or more intermediate spacing frames (13) may also be provided. The mounting of different size mould members 9 and 10 is also facilitated by the provision of a large number of connecting bores 24 through the baseplates 5 whereby bores not in use may be sealed by core members (25), Figs. 4 and 5, not shown, each provided with a flange for abutment with the base-plate 5 and around the periphery of which member (25) extends three circumferential slots provided with enlarged openings (27) at one end thereof for the passage of heads (28) of securing bolts whereby quick release of the core members (25) is facilitated; the core members (25) are each provided with four feet (29) for supporting mould bases 6, 7. The core members (25) are replaceable by connection bushes (30 or 30a) also provided with feet (29) and respectively provided with threaded or plain interior bores (31, 32) for the connection of steam heating and water cooling supply lines 35, 36 to the outer and inner mould jackets or the passage therethrough of ejector rods (41), Fig. 7, not shown. A branching spray line 38 for the outer jacket, or a spray nozzle 39 for the inner jacket, may be provided for the water connection 36. A granular plastics injection gun 33 may also be connected to the moulding cavity through a bore 24. |
