No abstract

The VHTP platform presented in this study is for computer mouse pattern transfer. Works needed to be completed before VHTP processes are listed as following: A specially-made mouse fixture is used, and a mouse shell is fixed on it for pattern decorations. Next, a multi-layer coated film is precisely fixed on the mouse fixture with the pattern on the film touched the mouse shell. Finally, the mouse fixture is moved onto the VHTP platform. This study is dedicated to making an innovative automated machine to replace the manpower as well as maintaining the same production rate and accuracy. The mechanism first used to separate the unwanted cover from the multi-layer film of decoration pattern is designed; our brand new design consumes less material and less cost than the existing film stripping mechanisms, which are mostly used in vacuum technology and adhesive tapes. After separation, the film was cut to remove part of the protective layer of the pattern film. Then, the film is moved to a stripping mechanism which is used to remove the protective layer of the film by clamping a portion of the film where the protective layer was cut in the previous process on the mouse fixture. The mouse fixture is then rotated to strip the film off the protection layer which is not been cut. In the mean time the film is precisely attached on the mouse fixture and covers the mouse fixture with the film. The automation of the VHTP is then completed.

A knife blade cutting experiment was performed to study the effect of clearance between two knife blades on cutting only one layer of a multi-layer thin film. The multi-layer thin films are made up of three major layers: a 0.1mm Polyethylene terephthalate (PET) layer, a 25 ~ 50 μm elastic plastic layer, and a 0.18 mm paper layer. The clearance between two knife blades is controlled by a micro manual stage. The cutting parameters are the clearance of knife blades, the edge of knife blades, and cutting speed. The relationships between layers to be cut and clearance between knife blades are measured using specific knife blades and a constant cut speed. Using the experimental results, several criteria for cutting paper layer are critically assessed. Through assessment of the criteria, the paper layer alone is practicably removed from multi-layer thin film. This experiment successfully provided a method to cut a specific layer but other layers of multi-layer thin film at once.