热熔压敏胶涂胶系统在YB29自粘软盒包装机上的应用

Application of Hot Melt Pressure Sensitive Adhesive Application System to YB29 Self-binding Soft Packer

为解决自粘软盒包装机对商标纸进行刮胶时出现的胶条歪斜、形状不准确以及胶条厚薄不均等问题,设计了一种新型热熔压敏胶涂胶系统。该系统主要由胶缸、胶管、胶枪、操控屏、控制器、编码器以及电眼(检测传感器)等部件组成。采用刮胶方式的涂胶技术,以获得外观平整美观的胶条;设计了商标纸定位导轨,防止在刮胶过程中模盒内的商标纸发生歪斜;利用脉冲定位方法确定刮胶起点与终点位置,避免涂出的胶条相对商标纸的位置出现偏差;采用I/P转换器使胶缸内的压力调节与包装机运行速度保持同步。设胶条长度为45 mm,胶条宽度为4 mm,对刮出的胶条效果进行测试。结果表明:1刮出的胶条在长度方向的位置误差为±1.100 mm,宽度方向的位置误差为±0.375 mm,符合卷烟产品包装品质要求,能够满足自粘软盒包装机的使用需求。2在商标纸运行速度曲线的中间位置选择刮胶起点和终点位置,可以获得位置准确、外观平整美观的胶条。该涂胶技术可推广应用于其他有涂胶需求的卷烟设备。

In order to prevent the adhesive pattern on labels from misalignment, inaccurate shape or uneven adhesive thickness in a self-binding soft packets, a new type hot melt pressure sensitive adhesive application system was designed, which comprised an adhesive pot, an adhesive pipe, an adhesive gun, an operation panel, a controller, an encoder, a sensor, wherein the adhesive was applied by scraping to ensure good appearance. A label guide was designed to ensure the label positioning during scraping. The start and stop positions of scraping were monitored by pulse positioning method. I/P converter was utilized to harmonize the pressure in adhesive pot with the running speed of the packer. The scraping adhesive pattern was tested by setting its length and width 45 mm and 4 mm respectively, and the results showed that： 1） The longitudinal and transverse position errors of scraped adhesive pattern were 4-1.100 and 4- 0.375 ram, respectively; which met the requirements of cigarette packing quality and satisfied the needs of self-binding soft packer. 2） Setting the start and stop positions of adhesive scraping at the middle of label running speed curve would obtain an adhesive pattern with accurate position and good appearance.