| Spring hole sleeve technology |
| Received:September 10, 2018 Revised:September 10, 2018 |
| DOI：10.12136/j.issn.1000-890X.2019.05.0372 |
| Key Words: spring hole sleeve installation; drilling; exhaust; rubber whisker; flexible mold; mold cleaning |
| Author Name | Affiliation | E-mail | | HU Haiming | Qingdao University of Science and Technology | huhaiming@163.com | | XU Wenzhi* | Qingdao University of Science and Technology | 806829828@qq.com |
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| Abstract: |
| The technology of spring vent for tire vulcanizing mold was introduced. The spring vent was composed of valve stem，spring and shell. Under the action of spring，the gas remaining in the cavity of vulcanizing mold with the tire was discharged from the gap between the sleeve and the core of the shaft，and the compound was prevented from flowing into the sleeve through the valve stem movement，thus avoiding burr formation on the surface of vulcanized tires. The spring vent was mounted in the drill hole of the vulcanizing mold. The drill hole was formed by drilling for three times，and the size and tolerance of the drill hole were determined by the outer diameter of the spring vent. The tire vulcanizing mold with spring vent could be cleaned by conventional methods，and the dry ice cleaning was the best. |
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