Grinding machine for grinding or rasping of rubber items

B - Operations – Transporting – 24 – B

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B24B 19/22 (2006.01) B24B 7/30 (2006.01) B24B 21/08 (2006.01) B24B 41/06 (2006.01)

Patent

CA 1313761

A B S T R A C T A grinding machine for grinding or rasping of the back of tread rubber (2) for retreading rubber tyres comprises a conveyor belt (1) carrying the rubber item (2) in under a grinding roller (3) assisted by one-sidedly rotating rollers (4, 5). Under the grinding roller (3) the conveyor belt is supported by a table (14) resting on a bellows cylinder (13), said table (14) carrying support means comprising blocks (30) resting on a hose (28) under pressure. On the convex top side (38) of each block rests a fish-plate (32), the top side (34) of which supports the conveyor belt (l) immediately under the grinding roller (3). The fish-plates (32) may individually adapt themselves to the shape of the rubber item (2) during the grinding process. (Fig. 1)

555358

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