Nissei Plastic Industrial Co., Ltd.

Keizou Shimizu

Hiroshi Yamaura

Fumio Shiozawa

Kinji Yokoya

The purpose of the invention is to prevent a sticking of lubricant to a ball screw shaft and a scattering to the circumstance in an electromotive toggle mold clamping device. This invention relates to the electric motor driven toggle mold clamping device wherein a ball nut member is screwed together to the ball screw shaft which rotates by an electric motor to advance and retreat freely and a cross head is fixed to the ball nut member, a cylindrical or polygonal cylindrical member which has a cylindrical body shape or square cylindrical body shape with a length and a size of placing the ball screw shaft with a required gap while retreating the cross head, is attached to the front ends of the cross head concentrically with the ball screw shaft. The ball screw shaft protruding from the cross head is placed in the cylindrical or polygonal cylindrical member having a required gap.

Electric motor driven toggle mold clamping device

A pressure detection apparatus of an injection molding machine composed of a drive mechanism and a movable member includes a pressure reception member disposed in the drive mechanism in such a manner as to be movable in a reciprocating direction of the movable member while being guided by a guide member. A ball screw or nut of a ball screw mechanism of the drive mechanism is fixedly attached to the pressure reception member. A load cell is disposed between the drive mechanism and the movable member in such a way as to be fixedly attached to one of a bearing ring retainer facing the movable member and the pressure reception member while abutting the other. The pressure reception member receives stress (load) directed in a rotation direction and arising from the ball screw or nut, thereby preventing imposition of the stress (load) on the load cell.

Growing community of inventors

Nagano-ken, Japan

Keizou Shimizu