Mitsubishi Heavy Industries Limited

Kenji Tsutsui

Makoto Hattori

Koji Nakano

Takayuki Takashige

Kazuki Niwa

Takashi Mizuno

Tetsuo Uwaji

Akihiro Maekawa

Junji Murase

Tadashi Murata

Kimio Akazawa

Kouji Kuwabara

There is provided an integrated electric compressor having a circuit configuration capable of decreasing the size thereof while restraining current ripples. In an inverter of the electric compressor, by providing a capacitorand a reactorbetween a power source and an inverter board, the ripples of a driving voltage is restrained, and a motor can be driven with high efficiency and the size of a housing can be decreased. Further, by connecting the capacitorand the reactorto a power boardby using a bus bar, the voltage ripple restraining effect is further increased, and the capacitorand the reactorare unitized integrally by the bus barto improve the assembling workability of the power board

Integrated electric compressor

A method for analyzing injection molding conditions, which takes into consideration the compressibility of molten resin in a barrel and mechanical delays in resin flow caused by constituent elements of an injection molding machine and analysis results thereof are provided. In a method for analyzing injection molding conditions in which, by using input data having shape data () and injection conditions data () to perform flow analysis of the process of filling the inside of the mold with molten resin, analysis of the pressure maintenance process from the filling with molten resin to the gate sealing, and analysis of the cooling process within the mold after gate sealing, the pressure and temperature distributions of resin within the mold are calculated, data () regarding compressibility of molten resin held in the barrel of the cylinder and mechanical data caused by constituent elements of the injection molding machine are added to the input data.

Method of analyzing injection molding conditions

The invention relates to an electric injecting molder and an injection velocity and injection pressure controlling method for an electric injecting molder, and it is an object of the present invention to make it possible, in injection molding by an electric injection molder, to mold stable resin products having a minimized dispersion in the quality even if the operation environment varies. When an injection screw () disposed in an injection cylinder () is driven to move in forward and backward directions by an electric motor (A) to inject resin material () in the injection cylinder () into a metal mold () to fill the metal mold (), the electric motor (A) is first velocity-controlled to fill the resin material () into the metal mold (), and, after the filling, the electric motor (A) is pressure-controlled to replenish the resin material for shrinkage of the resin. Upon the velocity control, a velocity target value for the injection screw () is corrected in response to a force detection value so that the velocity target value for the injection screw () may decrease as the force detection value increases to perform velocity feedback control of the electric motor (A) so that a velocity detection value from velocity detection means may be equal to the velocity target value.

Electric injection molding machine for controlling injection speed and injection pressure of electric injection molding machine

Growing community of inventors

Aichi-ken, Japan

Kenji Tsutsui