公开(公告)号：US5562795A

公开(公告)日：1996-10-08

申请号：US394535

申请日：1995-02-21

申请人： Charles R. Landrum ,  Thomas G. Sanford

发明人： Charles R. Landrum ,  Thomas G. Sanford

IPC分类号： B29C65/00 ,  B29C65/10 ,  B31B50/62 ,  B32B31/20

CPC分类号： B29C66/1122 ,  B29C65/103 ,  B29C65/787 ,  B29C66/003 ,  B29C66/43121 ,  B29C66/72328 ,  B29C66/80 ,  B29C66/83411 ,  B29C66/8744 ,  B31B1/00 ,  B29C66/73921 ,  B29C66/73941 ,  B29C66/849 ,  B29L2031/7162 ,  B31B2201/6013

摘要： An apparatus for feeding/heat sealing cartons along the feed path of a cartoning line is provided. A conveyor moves the cartons past the heat sealing station where an elongated nozzle assembly forms a heated air stream directed against the carton flap and the side of the carton to activate the coating to form an adhesive. A bypass valve and duct is provided to interrupt the flow of heated air in the event that the carton does not clear the activation zone in a predetermined time. Strategically placed heat shields and coolant passages are provided to further isolate the conveyor from the heat. The nozzle includes a slotted outlet with an elongated bar closely spaced above to deflect the heated air stream when a carton is present for adhesive activation; said bar having a tapered fin to form a modified air foil along the trailing edge to divide, recombine and compact the stream when a carton is not present. The upper feed belts of the conveyor are adjustable to adapt to cartons of various heights.

摘要翻译： 提供了一种用于沿着装箱线的进给路径进给/热封纸箱的装置。 输送机将纸箱移动通过热封站，其中细长的喷嘴组件形成指向纸箱盖和纸箱侧面的加热空气流，以激活涂层以形成粘合剂。 提供旁通阀和管道以在纸箱在预定时间内不清除活化区域的情况下中断加热空气的流动。 提供了策略放置的隔热罩和冷却剂通道，以进一步隔离输送机与热量。 喷嘴包括带槽的出口，当存在用于粘合剂活化的纸箱时，细长条紧密地间隔开以偏转加热的空气流; 所述杆具有锥形翅片，以沿着后缘形成改进的气翼，以在不存在纸箱时分流，重组和压实流。 输送机的上进料带是可调节的，以适应不同高度的纸箱。