| 摘要 |
PURPOSE:To position a pallet surely and prevent rising and falling pallets from shaking, by providing guide rollers, with which outside edge parts of pallets are brought into contact, in raising and lowering mechanisms for pallets where discs are freely attached and detached. CONSTITUTION:Raising and lowering mechanisms for pallets 1, where discs are freely attached and detached, consisting of pairs of guide bars 29 in, for example, three stages, an electric chain 28, etc. are provided with guide rollers 30- vertically. Outside edges of pallets 1 carried to the lowering mechanism or the like through an upper parallel carrying path forming a circular carrying path are brought into contact with rollers 30 to position pallets 1 surely. Lowered pallets 1 are guided by rollers 30 continuously to prevent pallets 1 from shaking. When pallets are raised, the shaking is prevented similarly. |
