期刊名称：Advances in Science and Technology Research Journal
印刷版ISSN：2080-4075
电子版ISSN：2299-8624
出版年度：2019
卷号：13
期号：4
页码：246-254
DOI：10.12913/22998624/114028
语种：English
出版社：Society of Polish Mechanical Engineers and Technicians
摘要：The objective of the study was to present the results of research on the thermoforming process using a patented,original male mold vibrating with the adequate frequency during the stretching of a polystyrene sheet. The researchincluded determining the influence pertaining to the frequency of the mold vibration as well as other selected conditions of the thermoforming process, such as the temperature of the heater and heating time on the irregularity ofthe wall thickness of the formed product. The research was conducted using the DOE methods – central compositedesign. The thermoforming process was conducted using the vacuum stretching method with initial forming byhigh-pressure air. The analysis of the results obtained showed that the frequency of mold vibration has a signifcantstatistic influence on the thickness of the walls of a fnished product, both in the area of their bottom as well as thebottom’s edge. The thickness of the product wall on these areas is also signifcantly influenced by the other abovementioned factors. No interaction, however, was detected between those and the frequency of the mold vibration.Using the vibrating mold in the presented process proved favourable, since the walls of the obtained fnished products showed lesser irregularity in terms of the wall thickness than the products manufactured using a fxed mold.
