B - Operations – Transporting – 28 – B
Patent
B - Operations, Transporting
28
B
B28B 5/02 (2006.01) B22D 11/06 (2006.01) B28B 23/00 (2006.01)
Patent
CA 2150260
The invention is related to a continuous moulding device of building materials comprising two pairs of drive sprockets (22) oppositely positioned at the inlet and the oudet of the device, a pair of chain conveyors (24) wound on said drive sproclcets (22) and having a connecting part (24a) on each of their links, a series of bottom plates (26) each of which is connected to opposite connecting parts (24a) of said links, side wall members (27) pivotally connected to the sides of each said bottom plate to form a unit mould tranversely, and end pieces (30, 30') connected to each said bottom plate (26) to resiliently contact the ends of each unit mould. According to another aspect of the invention, said unit mould can be formed by side wall members (127) and a bottom member (128), or by a bottom wall (210a) and side walls (210b, 210c) of a moulding conveyor belt (210). The device makes it possible to maintain dimensional tolerances of the moulded products, concrete beams, door frames, or aluminum blocks, within + 1mm, because, by suitable means, the end pieces and the side walls of each mould are positioned vertical with the bottom plates during moulding and automatically pivoted outward during removing. In addition, articles having a natural wood grain appearance can be produced by providing a separate bottom forming member on the bottom plate, the bottom forming member having on its surface desired woad grains embossed or engraved.
Bereskin & Parr
Suh Kun Hee
LandOfFree
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