The Design And Research Of High-speed Box-taking Mechanism In Medicine Automatic Cartoner

There are a large number of automatic cartoners in the domestic market, butit basically concentrated in low-speed level market. The high-speed cartoningmachine market mainly carved up by imported products. Box-taking mechanismis a “bottleneck” of automatic cartoner. Many manufacturers has not been able todevelop a high-speed automatic cartoning machine; one of the important reasonsis that the box-taking mechanism has not been designed with the most reasonabledesign theory and mechanism parameters. In response to this situation, the authorused simulation technology to make a detailed analysis of box-taking mechanismof120type automatic cartoner based on packing machinery design theory in thispaper. At last, the author completed the improved design of the box-takingmechanism. In addition that it also designed a new four heads mechanism of camlinkage combined mechanism to take box. The new product has been put intooperation in an enterprise; practice result shows that the mechanism cancomplete box-taking action quickly and smoothly.In this paper, it made detailed analysis of box-taking action process in the120type automatic cartoning machine and made a deep analysis of sucking box,opening the box, putting the box action. At last, analyzed the result is that thethree tricuspid valve line is the box-taking trajectory and found the key factorswhich effect box-taking trajectory.If the higher speed of box-taking mechanism needed, the planetary wheel isno longer adapted to the situation. In this paper, the author designed a newbox-taking mechanism of cam-five link combined mechanism which combinesthe advantages of cam and linkage mechanism. Five-bar mechanism can fulfillcomplex trajectory and cam mechanism has intermittent characteristics. Thishigh-speed box-taking mechanism makes use of the dual-cam to drivedual-degree five-bar mechanism to meet the requirements of speed and posture.The designation of cam is a key part of this paper. In this paper, the author reversed the position of the five-bar mechanism through the designed trajectory,eventually deduced the curve of the cam contour. Used Solidworks software tomodel three-dimensional of the entire mechanism after finish all the designationcalculation, then assembled all the parts and simulate them to verify whether themechanism is reasonable and whether the parts are interference.Finally, finish the kinematics simulation for the mechanism to getting the motionparameters under the high-speed running. Then modify and optimize themechanism based on the simulation parameters until getting the suitablemovement result.Also in this paper, the designation of the vacuum air road is a key part,which effects whether the box-taking can success or not. Designed vacuum airroad of multi-head box-taking mechanism. There are four access roads and theycan control the suction head to finish box-taking action independently. In theaspect of replaceable design, the author designed an independent installation ofthe sealing parts. When the seals needed to be replaced, we just need to separateout the gland, rather than disassemble the whole mechanism, then reducing thecomplexity of the replacement.