A stripping device for stripping a waste piece from a sheet of material, which includes a stripping member with a connecting portion, a supporting finger located on one side of the connecting portion, and a stripping finger located on another side of the connecting portion. A first link has a first end movably and pivotably connected with a slot defined in the arm and a second end of the first link is movably and pivotably connected to a first end of a second link. The interchange includes a common format processor and a plurality of converters to interface with a plurality of different controllers of mobile communications. The ion trap has a simple rectilinear geometry with a high trapping capacity. Each upper segment is pivotably connected to upper portions of the first sidewall to provide clamshell movement of the second sidewall above the platform. , and then the detected parameters are analyzed and converted into an input gesture sequence by a specific algorithm to be compared with a predefined motion information sequence so as to enable any of the controlled electronic devices to perform a specific operation according to the result of the comparison.