| Summary: | 碩士 === 國立臺北科技大學 === 機電整合研究所 === 101 === In general, a plastic cup runs hot press exhaust molding with plastic molded cup machines prior to cutting with a cutting machine. Consequently, the process is relatively long and volume of the whole system is relatively large. To be more efficient, the improved process combines hot press and cutting into a single machine which can be done by varying acceleration with time. In this thesis, we propose a design of an accelerating cam to accomplish cutting inside the mold with minimum power consumption.
The profile of the cams is determined with a selected cam curve and position analysis. It is calculated by the vector loop from mechanical design. Newton''s law is then applied to find out the internal stress of each bar. When the machine is modularized, giving different bar length can have corresponding cam profile without affecting mold movement. As a result, the machine is highly customizable for variant user needs. It speeds up the diagram modification and simulation in computer design In addition, we innovate a machine transformation which gives it diverse motion. In conclusion, our design process supports the systematic machine production, the integrated machine design, the diversified use of the machine.
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