基于两步法的饮料塑料防盗瓶盖切割机设计

为了解决防盗瓶盖在一次注塑成型中存在的瓶盖主体与防盗环产生粘连及制盖模具结构庞大的问题。将注塑与机械切割相结合的两步法技术应用到制盖工艺中。开展了采用机械切割的方法切割防盗环的分析,建立了切割机与瓶盖防盗环之间的关系,进行了切割机的设计、制造工作,并提出了在瓶盖注塑成型后加一道切割工艺生成防盗环的制盖方法,最后,对切割机进行了瓶盖的切割试验。试验结果表明,与一次注塑成型的防盗瓶盖相比,该方法不仅解决了防盗环的粘连问题,同时去除了制盖模具中的抽芯机构,简化了模具结构,使模具的制盖产量提高一倍以上。

Slitting machine for beverage plastic closures with tamper-evident band based on two-steps process

In order to solve the problem of the flash between the main part and the tamper-evident band of the beverage closures,and the large structure of the injection mold made by one step injection process,the two-steps technology combined with slitting and injection was investigated.After the analysis of using mechanical slitting process to cut the closures,the relationship between the slitting machine and the tamper-evident band of closure was established.A pilot slitting machine was made,and the method of slitting the closures to form the tamper-evident band after injection was brought out.Finally,the closure slitting test was carried out.The test results indicate that,not only the problem of the flash is solved completely,but also the production efficiency is doubled for the reason of simplified mold structure by getting rid of the core-pulling mechanism of the mold compared with the one step injection process.