Nissei Jushi Kogyo K.k.

Nissei Jushi Kogyo Kabushiki Kaisha

Nissie Jushi Kogyo K.k.

Hisakazu Hirata

Kazuyuki Okubo

Motomi Kitamura

A clamping apparatus of molding machine including a base; a fixed board disposed on the base; a movable board movable relative to the fixed board; a plurality of mold clamping cylinders disposed in predetermined positions of the fixed board, the mold clamping cylinders each having a mold clamping piston with a tie bar reception hole and a tie bar connection device disposed on the mold clamping piston; a plurality of tie bars with a thread at their one end, the tie bars being disposed in correspondence with the mold clamping cylinders on the movable board; a plurality of mold opening/closing cylinders for moving the movable board; and an axially movable sleeve associated with each clamping cylinder for adjusting an axial position of an associated piston to adjust an engagement position of the tie bar connection device, the sleeve being disposed in an opening in the fixed board and forming an extension of the tie bar reception hole, with one end of the sleeve abutting against a reception wall provided in each piston surrounding the tie bar reception hole and the other end of the sleeve threadedly cooperating with an engagement adjustment screw ring secured to the fixed board.

Clamping apparatus for molding machine

A safety apparatus for a clamping device which includes a machine base, a first fixed board fixed on the base, a movable board movably disposed on the base, either a second fixed board or a bearing member fixed to the base behind the movable board, and a safety door slidably disposed on the base between an open and a closed position. The safety apparatus includes an engagement device disposed on the movable board, the engagement device having a stopper member which is vertically movable between an engaged and a disengaged position when the safety door is opened or closed, a safety rod disposed between the first fixed board and either the bearing member or the second fixed board, the safety rod having a plurality of engagement portions spaced therealong, and a drive device disposed on either the bearing member or the second fixed board for axially moving the safety rod. When the safety door is in the open position and the stopper member is in the disengaged position, the drive device axially moves the safety rod so as to enable the stopper member to engage one of the engagement portions of the safety rod.

A mold clamping apparatus for use in molding machines such as injection molding machines, diecasting machines and press molding machines. The mold clamping apparatus includes a base; a fixed panel and a movable panel disposed on the base and respectively supporting mold halves; a plurality of tie bars each having a screw shaft at one end thereof which passes through the movable panel; a plurality of clamping cylinders disposed on the fixed panel for clamping an other opposite end of the tie bars when the mold apparatus is in a closed position; a mechanism for moving the movable panel toward and away from the fixed panel; an adjusting mechanism, disposed on the movable panel, for simultaneously fixedly adjusting the axial position of the plurality of tie screws with respect to the movable panel such that the distance between the movable panel and the fixed panel when the mold apparatus is in the closed position can correspondingly be adjusted so as to accommodate molds of varying sizes.

Mold clamping apparatus for molding apparatus

A clamping apparatus of molding machine including a base; a fixed board disposed on the base; a movable board movable relative to the fixed board; a plurality of mold clamping cylinders disposed in predetermined positions of the fixed board, the mold clamping cylinders each having a mold clamping piston with a tie bar reception hole and a tie bar connection device disposed on the mold clamping piston; a plurality of tie bars with a thread at their one end, the tie bars being disposed in correspondence with the mold clamping cylinders on the movable board; a plurality of mold opening/closing cylinders for moving the movable board; and a mold thickness adjustment device having a movable stopper for contacting an end of each tie bar to control the axial position of each of the tie bars with respect to the connection devices during clamping.

A clamping apparatus of molding machine including a base; a fixed board disposed on the base; a movable board movable relative to the fixed board; a plurality of mold clamping cylinders disposed in predetermined positions of the fixed board, the mold clamping cylinders each having a mold clamping piston with a tie bar reception hole and a tie bar connection device disposed on the mold clamping piston; a plurality of tie bars with a thread at their one end, the tie bars being disposed in correspondence with the mold clamping cylinders on the movable board; a plurality of mold opening/closing cylinders for moving the movable board; and a differential circuit connected between a front oil chamber and a rear oil chamber of each of the plurality of mold clamping cylinder.

Growing community of inventors

Nagano, Japan

Hisakazu Hirata