ELASTOMERIC SPRING

摘要

An elastomeric die spring (12) has a fibre reinforced elastomeric cylindrical block (14) enclosed within a Neoprene sheath (16) with heat conductive retainers (24) and (26) overlying opposite ends of the block to act as heat sinks. Each retainer has a tubular portion (44, 46) pressfitted within a bore (18) of the block with a precompression member (74) extending between the retainers and holding them against the ends of the block (14) to precompress it between 7 % and 12 % of its free length. The construction permits compression of the block up to 40 % of its free length. The retainers serve as heat sinks for heat developed within the block during repetitive compressions and expansions in the operation of the stamping press in which the spring is used.