基于分區硫化工藝的輪胎活絡模具結構優化

摘 "要：為實現花紋塊和側板分區控溫，進而提升輪胎的硫化質量，以輪胎活絡模具為研究對象，基于有限元仿真分析軟件，對模具結構進行了優化設計，并對比分析了模具優化前后花紋塊及側板在預熱完成后的溫度分布均勻性以及兩者的溫度差異情況。結果表明：優化后模具預熱完成后花紋塊與側板溫差明顯提高，花紋塊型腔面溫差降低，花紋塊和側板實現了分區控溫且溫度分布更均勻。同時對優化前后模具結構進行了實際測溫，測試結果充分證明了優化結構在分區硫化控溫上效果顯著，因此該模具結構優化方案可有效提高輪胎的硫化成型質量。

關鍵詞：輪胎活絡模具；有限元分析；結構優化；分區硫化

中圖分類號：TP391.7 """""""文獻標志碼： B

Structure optimization of segmented tire mould based on zoning vulcanization process

YU Cuixiang1，2， YU Yong1，2， SUN Riwen1， LIU Zhilan1，2*

（1. Himile Mechanical Science and Technology （Shandong）

Co.， Ltd.， Gaomi 261500， Shandong， China）

（2. Key Laboratory of Tire Mould Key Technology in Shandong Province， Gaomi 261500， Shandong， China）

Abstract： "In order to achieve zone temperature control of pattern blocks and sidewall plates and improve the vulcanization quality of tires， the segmented tire mould was taken as the research object， and the mould structure was optimized based on finite element analysis software. After preheating， the difference in temperature between the pattern blocks and the sidewall plates and the uniformity of temperature distribution in mold cavity before and after optimization was compared and analyzed. The results showed that the temperature difference between the pattern blocks and the sidewall plates was increased obviously after optimized， the temperature difference of pattern blocks was decreased. Therefore， the temperature of pattern blocks and sidewall plates can zoned control， and the temperature distribution of pattern blocks and sidewall plates were more uniform. The actual temperature measurement of the mould structure before and after optimization was carried out， the test results fully proved that the optimized structure has a significant effect on partition vulcanization temperature control. Therefore， the mold structure optimization scheme can effectively improve the vulcanization quality of molded tires.

Key words： segmented tire mould; finite element analysis; structure optimization; zone vulcanization

0 "引 "言

輪胎模具是實現輪胎硫化成型的關鍵工裝，其傳熱性能的好壞、型腔溫度的均勻程度決定了成型輪胎的質量［1］。隨著汽車行業的發展及人們對于輪胎壽命、舒適性要求的提高，高質量輪胎的需求不斷增加，成型輪胎所必須的輪胎模具結構也在不斷優化改進。

輪胎硫化過程中，由于輪胎胎側和胎冠部位膠料厚度及種類不同，所需最佳硫化溫度也不同，若兩處硫化溫度保持一致，往往會造成胎側過度硫化以及胎頂欠硫問題。為使輪胎硫化后達到最佳使用性能，輪胎廠常采用熱板和模套分區控溫的方法進行輪胎硫化［2］，但由于花紋塊與側板間存在熱量交換，并不能有效達到預期目標，因此，對花紋塊和側板分區控溫的研究是非常有必要的。……