Optimized punches geometry for paper punching systems: An industrial approach

摘要

This paper focuses on the comparison of two optimized punch geometries, for the perforation of paper documents and polymer layers, on the context of design of mechatronic systems for perforation of those paper documents. The optimization of the punch geometry allows the punching equipment to increase the maximum punch capacity, increasing, this way, the working cadence of these equipments. On the other hand, by optimizing punches and maintaining the maximum amount of punched sheets, it is possible to reduce the size, weight and costs of these equipments. The comparison performed in this work is based on the load distribution profiles along the displacement of the punching system, as well as on the maximum force required to perform the punching. The experimental results were performed using a compression/tensioning machine and a torque sensor coupled to the punching equipment. Measurements were made with 80gsm office paper in tests of 5,10, 15, 20 and 23 blocks of sheets.