| 摘要 |
PURPOSE:To shorten a molding cycle and improve work efficiency by providing a linear guide member, extruding a partially fabricated rubber product supported by the guide member and mounting the product, holding one end of a rubber tube having high temperature with a holding member, and pulling the holding member in the direction of axis of a mandrel. CONSTITUTION:A method for manufacturing a rubber bent tube 1 comprises a vulcanizing process where a partially fabricated rubber product 4 mounted on a mandrel 2 is heated and vulcanized so as to form the rubber tube 1 fixed in a curved shape and a process for pulling out the vulcanized rubber tube 1 from the mandrel 2. In the mounting process, a linear guide member 3 is arranged on the same axis as the mandrel 2. The partially fabricated rubber product 4 supported by the guide member 3 is extruded on the mandrel 2. Thus, the partially fabricated rubber product 4 is mounted. In the pull-out process, periphery of one end of the rubber tube 1 which is vulcanized and still has high temperature is held by a holding member 10. The holding member 10 is pulled in the direction of the axis of the mandrel 2 so as to pull out the runner tube 1. |
