| 摘要 |
VULCANIZING APPARATUS The vulcanizing apparatus of the present invention can be used for vulcanizing spliced sections of rubber belting, sheeting or the like. The apparatus includes an upper platen assembly and a lower platen assembly. The upper platen assembly includes an upper frame member and a sheet-like platen member having a relatively rigid platen surface. The platen member is affixed to an upper frame member. A heat exchanger, a heating pad and a layer of insulation are sandwiched between the sheetlike platen member and the upper frame member. The lower platen assembly includes a lower frame member and a sheet-like platen member having a relatively rigid platen surface, below which are interposed in sandwiched relationship a heat exchanger, a heating pad, and a layer of insulation. The layer of insulation rests upon a flexible diaphragm that has a flexible surface substantially co-extensive with the lower platen surface. The peripheral portions of the diaphragm surrounding the platen surface coextensive portion are affixed to a lower frame member in sealed relationship, forming a fluid pressure chamber between the lower surface of the diaphragm and the lower frame member. An inlet to the pressure chamber is provided fro admitting a fluid under pressure into the chamber and for exhausting the fluid. Connecting members, in the form of bolts pivotally mounted to the lower frame member and removably secured in appropriately positioned slots in the upper frame member, position and hold the upper platen surface in mutually opposing spaced relationship to the lower platen surface when a belt or other material to be vulcanized is interposed between the two platen surfaces. In use, a pressurized fluid is injected into the pressure chamber in the lower platen assembly causing the flexible diaphragm and the portion of the lower platen assembly resting on it to move upwardly, compressing the belt or other work piece to be vulcanized between the upper and lower platen surfaces. Thereafter, the heating pads are energized to heat the workpiece to vulcanizing temperature. After the workpiece is vulcanized, the heating pad is de-energized and a cooling fluid is injected into the heat exchangers to cool the work piece sufficiently for handling. Thereafter, the pressure is released from the pressure chamber, the bolts holding the upper and lower platen assemblies together are uncoupled, the upper platen assembly is lifted off the belt, and the belt is removed and placed in use. |
