| Analysis of Air Vent of Tire Molding with Different Tread Pattern |
| Received:April 11, 2019 Revised:April 11, 2019 |
| DOI：10.12136/j.issn.1000-890X.2019.11.0858 |
| Key Words: tread pattern；vent field；fluidity；fluid dynamics；vent；gas velocity |
| Author Name | Affiliation | E-mail | | Hu Hai-ming | Qingdao University of Science and Technology | huhm64@163.com | | Xu Fang-xin* | Qingdao University of Science and Technology | qdxufx@163.com |
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| Abstract: |
| Based on the theory of fluid dynamics，a mathematical model of the vent field for tire molding
with a different tread pattern was established. The air flow in the vent field of tread pattern during the second
stage of tire molding process was then analyzed using software Fluent.The results showed that，when two vents
were set for rectangular pattern，the gas flow was well split and the collision between the gas and cavity wall
could be reduced.When the vent diameter was 3 mm，the outlet gas velocity was stable，and the internal pressure
of the cavity was relatively constant. For the polygonal pattern，the vent performance could be improved by
adjusting the number of the vents and setting one vent at the corner of the pattern. The turbulence intensity
increased gradually from the inlet to the outlet of the vent，and the peak value was reached at the surface of the
wall. |
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