CAD Application on Manufacture of Forming Shoulder for Packaging Machines

Abstract

Based on the theoretical analysis of forming shoulder used in fill-and-seal packaging machine, this paper presented the 2-D and 3-D mathematical models of offset bending curve jointing the vertical tube and shoulder parts. According to the technology widely used in the manufacturers, the theoretical basis was provided for preparing the rough parts to make the shoulders. Furthermore, a new method using test tube was proposed to check the shape curve and locate the shoulder parts before welding. Transformed from 3-D offset bending curve, the 2-D cutting data of test tube was also provided for practical use.

Modelling the Material Flow and Web Tension in the Vertical Form–Fill–Seal Packaging Process

“…14 A mathematical model for the geometry allows automated methods of production to be considered. If the model allows the 3D surface geometry to be 'flattened' into a 2D form, then this simplifies manufacture 15,16 although it does require the 2D forms to be bent and joined. Alternatively, the shoulder can be made directly as a 3D object using conventional three-axis or five-axis machining.…”