Form sealer shear fracture crack

Source:   Date:2014-10-28 15:46:34   Views:

Deformation Mechanism of packaging finishing seal cutting machine shearing process, both in theory and in practice are of great importance. In theory, cutting metal sealing and cutting machine cutting process can be divided into rigid cutting edge of the elastic pressure on people, several stages of packaging plastic deformation, resulting in packaging microcracks extended until the final merger crack instability fracture. Deformation of Metal sealing and cutting machine shearing process, in theory, as previously mentioned is very complex. It involves elasticity, plasticity, metal physics, damage and fracture, content calculation methods and other subjects, and is material, geometry and boundary conditions of multiple nonlinear problems. In actual production, design and use of sealing and cutting machine cutting equipment are needed to force the sealing and cutting machine shearing process and to have a clear understanding. Sealing and cutting machine shearing section quality is good or bad, -a great impact on the quality of the parts as a whole, while the cross-sectional shape and size precision cutting machine shearing process glimpse of many factors, the current situation on the influence of these factors is not deep enough understanding of people thus the lack of production practice effective theoretical guidance. The actual production of many designs are done by means of empirical knowledge, has great blindness. In addition, sealing and cutting machine shearing process due to the impact load generated by the vibration, noise pollution caused great work environment, the need to improve existing technology to improve. In short, the study of metal mechanism and mechanical laws shearing process of sealing and cutting machine in addition to the theoretical value, in practice for the proper design and use of equipment, reasonable development of sealing and cutting machine shearing process and proper design sealer shearing mold, improve sealing and cutting machine shears cutting efficiency and quality, reduce production costs as well as various aspects of environmental protection are of great significance.
After years of research, scholars from various countries in the theoretical study of sealing and cutting machine cut made ??great achievements, but the study was not very deep person, sealing and cutting machine shearing process involving material damage and breakage, just from the perspective of static analysis of high-speed packaging sealing and cutting machine shearing process is not enough, because the high-speed sealing machine when the cutting mechanism of shear deformation of materials has changed, so this chapter from the perspective of the dynamic process of fracture mechanics packaging sealer shear analysis.
In order to facilitate high-speed sealing and cutting mechanism studies, we need first to high shear cracks in the analysis, because the formation of cracks and direction related to the quality of the entire cross-section of the original predetermined linear direction of extension if the crack formed along the words to form quality good shear section is bound to meet the requirements of precision machining. Conversely, if a crack is formed not by the original intended route forward, then, is bound to the formation of cracks branch off and irregularities will be significantly increased.