An effect of feeding system on the scratches of sheet metal strips

Over the years, significant improvements have been made in the area of press feeding system. As feeds become more accurate, faster, and varied in their use, the entire system must also be more capable to accommodate these new requirements. Generally, mechanical feeders used for thin sheet metal strips are adjusted to press eccentric shafts. Pneumatic feeders are installed to an air pressure system. Both mechanical and pneumatic feeders have been used in industry. These systems had many overlapping applications. Therefore, it is important for the industry to understand both processes, in order to optimize the process. The comprehensive knowledge on usefulness, deformation and damage scratches would help the users to judge which feeder is more appropriate for each type of application. This paper presents how to select a useful feeder according to deformation and damage scratches of both mechanical and pneumatic system. Case on feeding dead-soft material, cold-rolled material and hot-rolled material of different thicknesses are also discussed in a comparison study.