Sumitomo Heavy Industries, Ltd.

Shinji Terada

Tsutomu Miyatake

Yoshiyasu Itsuji

Norihito Okada

Koki Tsunemi

Yosuke Maruta

Takahiro Namiki

Toshiki Ogiwara

Tomohiro Moriya

Hiroaki Asai

A mold clamping device includes a first fixed member to which a stationary mold is to be attached; a first movable member to which a movable mold is to be attached; a second movable member configured to move together with the first movable member; a second fixed member provided between the first movable member and the second movable member; a mold clamping force generating mechanism configured to generate a mold clamping force due to an electromagnetic force between the second movable member and the second fixed member; and a mold clamping force amplifying mechanism configured to amplify the mold clamping force generated by the mold clamping force generating mechanism.

Mold clamping device

A cooling mechanism for cooling an electric driving part of an injection molding machine, includes a cooling part for cooling the electric driving part; and an actuating part actuated by being supplied an actuating fluid, the actuating fluid being in fluid communication with the cooling part. The actuating fluid may be used as a cooling fluid for cooling the electric driving part.

Cooling mechanism for cooling electric driving part of injection molding machine and cooling method for the same

In a hydraulic driving apparatus with a bladder-type accumulator connected to a fluid supply pipe extending from a hydraulic fluid source to at least one actuator, the apparatus comprises a hydraulic pressure sensor attached to the fluid supply pipe in the vicinity of the bladder-type accumulator and a control unit responsive to a detected pressure detected by the hydraulic pressure sensor for controlling the hydraulic fluid source. The control unit carries out the steps of judging, at the start of the hydraulic driving apparatus, an initial gas pressure supplied to the bladder-type accumulator with reference to a gradient of variation of the detected pressure detected by the hydraulic pressure sensor; monitoring, during a normal operation of the hydraulic driving apparatus, a difference .DELTA.P between the initial gas pressure and the detected pressure; and judging occurrence of a trouble when the difference .DELTA.P becomes smaller than a predetermined first difference .DELTA.P1 or when the difference .DELTA.P becomes greater than a predetermined second difference .DELTA.P2 (.DELTA.P1&lt;.DELTA.P2).

Hydraulic driving apparatus using a bladder-type accumulator with an

Growing community of inventors

Kanagawa, Japan

Shinji Terada