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Actual Problems in Machine Building. Vol. 4. N 1. 2017
Technological Equipment, Machining
Attachments and Instruments
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58
TOOL’S MODELING FOR
T
HERMOPLASTICS DURING INJECTION MOLDING
Pavlov L.N.
, Graduate students, e-mail:
leruohep@gmail.comShamina O.B.
, Ph.D. (Engineering), Associate Professor, e-mail:
shob@tpu.ruNational 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