Actual Problems in Machine Building 2017 Vol. 4 No. 1

Actual Problems in Machine Building. Vol. 4. N 1. 2017 Technological Equipment, Machining Attachments and Instruments ____________________________________________________________________ 58 TOOL’S MODELING FOR THERMOPLASTICS DURING INJECTION MOLDING Pavlov L.N. , Graduate students, e-mail: leruohep@gmail.com Shamina O.B. , Ph.D. (Engineering), Associate Professor, e-mail: shob@tpu.ru National Research Tomsk Polytechnic University, 30 Lenina Avenue, Tomsk, 634050, Russian Federation Abstract Tool’s modeling during injection molding is the most important stage of thermoplastics implementation in production. The model for plastic products machining has to dissipate a heat and simultaneously to provide production output that required. In accordance with the demands, the product’s shape has inner hollows. It is necessary to create additional elements to form the appropriate tool. Elements have to provide rigidity for bending or flexural stiffness. This demand complicates considerably the tool’s modeling and increases the cost of their practical realization. CAD / CAM and LVMFlow help to solve his task. Several design options were created with using of CAD / CAM systems. Modeling of the injection molding processes with LVMFlow allowed the most appropriated tool’s forms finding. Comparative in-place tests gave the possibility to find the optimal variant for design of tool’s elements for injection molding from thermoplastics. This design of tool’s elements allows reaching necessary operational characteristics. Keywords Tool’s modeling, injection molding, design, thermoplastics, heat balance, CAD / CAM systems, LVMFlow