我厂部分大型铸件生产是手工造型,由工人用铁锹向砂箱内加砂,劳动强度大。为了减轻工人的劳动强度,自行设制了两台二级胶带送砂机,代替工人加砂,结构原理见下图。 Some of our factory large-scale casting production is hand-modeling, by workers with shovels to sand box sand, labor-intensive. In order to reduce the labor intensity of workers, they have set up two secondary tape-sending sand mills to replace the workers to add sand. The structural principle is shown in the following figure.