Bottle cap and inner gasket press-fitting device thereof

According to the technical scheme, the press fitting device is characterized in that the press fitting device comprises a cap body and a sealing gasket, internal threads matched with a bottle opening are arranged on the inner circumference of the cap body, the sealing gasket is installed on the inner end face of the cap body, an aluminum gasket is compounded on the side, facing the inner end face, of the sealing gasket, and an extending edge is formed on the periphery of the aluminum gasket; the extending edge abuts against and is embedded in the inner circumferential face of the cover body to achieve fixation. The sealing gasket in the bottle cap can be stably installed, and the sealing gasket can be always kept in a stable state in the using process of the bottle cap. 本发明公开一种瓶盖及其内垫片压装装置，其技术方案要点是：包括盖体和密封垫，所述盖体内周设置有与瓶口适配的内螺纹，所述密封垫安装于盖体的内端面，所述密封垫朝向内端面的一侧复合有铝衬垫，所述铝衬垫的外周形成延伸边，所述延伸边抵压嵌合于盖体的内周面实现固定。本发明可保持瓶盖内的密封垫安装稳定，在瓶盖使用过程中可保持密封垫始终处于稳定状态。