Mitsubishi Heavy Industries Plastic Technology Co., Ltd.

U-mhi Platech Co., Ltd.

Menicon Co., Ltd.

Shizuoka University

Ube Machinery Corporation, Ltd.

Naoki Kato

Toshihiko Kariya

Yasuo Okochi

Hiroto Matsushita

Yasuaki Ozeki

Masamitsu Saji

Shinichi Takahashi

Saburo Fujita

Koji Kubota

Satoshi Miyagawa

Toshimasa Sugie

Masakazu Hara

A plant stress tolerance-inducing agent is provided that contains, as an active ingredient, a compound having a specific quinone skeleton. Alternatively, a plant stress tolerance-inducing agent is provided that contains, as an active ingredient, at least one compound selected from the group consisting of 1,4-naphthoquinone, 5-hydroxy-1,4-naphthoquinone, 5,8-dihydroxy-1,4-naphthoquinone, 2-hydroxy-1,4-naphthoquinone, 5-hydroxy-2-methyl-1,4-naphthoquinone, 2,3-dichloro-1,4-naphthoquinone, 2,3-dichloro-5,8-dihydroxy-1,4-naphthoquinone, 2,3-dichloro-5-nitro-1,4-naphthoquinone, 2,3-dichloro-6-nitro-1,4-naphthoquinone, 2-methoxy-1,4-naphthoquinone, 2-amino-3-chloro-1,4-naphthoquinone, a shikonin compound, and an alkannin compound.

Agent for inducing stress tolerance in plants

A mold platen includes a mold plate to which a mold is attached, a rear-surface plate provided opposite to the mold plate, coupling portions configured to be coupled to respective tie rods at four corners of the mold plate and the rear-surface plate, a cylindrical rib that is provided between the mold plate and the rear-surface plate and is located at a center part of the mold plate and the rear-surface plate, a diagonal reinforcing rib that is provided between the mold plate and the rear-surface plate and is configured to connect the cylindrical rib and each of the coupling portions, and a longitudinal/lateral reinforcing rib that is provided between the mold plate and the rear-surface plate and extends from the cylindrical rib along a position between the adjacent coupling portions.

Mold platen, mold clamping device, injection molding device

Provided is a mold opening/closing device that can prevent a ball screw shaft from reaching a risky speed while using a ball screw having a cantilever supporting structure. A mold clamping device according to the present invention is provided with: a ball screw having a ball screw shaft and a ball screw nut that meshes with the ball screw shaft; and a motor that drives the ball screw. One end of the ball screw shaft is supported by a fixation plate or a movable plate so as to be rotatable or non-rotatable, while being restricted in movement in an axial direction and thereby serving as a fixed end, and the other end thereof serves as a free end. Further, the mold clamping device is characterized in that a distance between the ball screw nut and the fixed end is shorter than a distance between the fixed plate and the movable plate.

Mold opening/closing device

A mold clamping device includes a fixed platen on which a fixed mold is disposed, a movable platen on which a movable mold that defines a cavity along with the fixed mold is disposed, a tie bar configured to resist a mold clamping force that is generated between the fixed platen and the movable platen, and a half nut opening and closing device configured to grip the tie bar, thereby locking the movable platen and the tie bar, in which the half nut opening and closing device includes half nuts configured to grip the tie bars, an actuator which is disposed on the movable platen and configured to move the half nuts back and forth with respect to the tie bars, and a clevis configured to connect the actuator to the half nuts so as to allow the actuator to swing with respect to the gripping member.

Mold clamping device and injection molding machine

Breakage of the actuator moving the movable platen in the clamping device of an injection molder is prevented. The clamping device includes a movable platen shifting device increasing and decreasing a horizontal distance between the movable platen () and the fixed platen (). It includes an actuator (), a clevis pin connecting the actuator () and the movable platen (), a clevis pin holding part holding a central axis of the clevis pin perpendicular to a moving direction of the movable platen (), and a clevis pin connecting part that connects the actuator () and the clevis pin. The clevis pin connecting part is a supporting structure rotating with the clevis pin. The clevis pin connecting part is supported by the movable platen (). The clevis pin, the clevis pin connecting part, and the front end of the actuator are aligned in a straight line.

Die clamping device for injection molding machine

It is an object to prevent dies from interfering with each other when the dies are closed and effectively prevent overshoot of cavity temperature while efficiently performing heating of the dies. In an injection molding machine for two-material molding including two sets of a first injecting unit and a second injecting unit that respectively plasticize different resin materials and inject and fill the resin materials, prior to performing injection molding on the first injecting unit side on a secondary side, after injection molding on the second injecting unit side on a primary side, heating of the dies is started before 180-degree rotation of a rotary die plate is completed. After the start of heating, until the 180-degree rotation of the rotary die plate is completed, i.e., die closing is performed, die temperatures are maintained within a temperature range set higher than die temperatures during the heating start and lower than die temperatures during injection.

Injection molding machine for two-material molding

In a mold clamping device including a fixed platen, a movable platen, a plurality of tie bars, and mold clamping half nuts, a pair of additional half members which is restricted in the axial direction of the tie bar and moves in an opening/closing direction of the half nuts relative to the mold clamping half nuts is further provided, and when the mold clamping half nuts are closed and mated with the screw or the ring groove of the tie bar, the additional half members are closed to hold the tie bar so that play at mated parts is removed or cancelled by fixation.

Mold clamping device

In an injection molding machine for two-material molding including two sets of injection unitsthat plasticize different resin materials and injection-fill the materials, a mold clamping unit is a hydraulic mold clamping unit that mold-clamps three sets of die platessimultaneously, a movable die plate opening and closing unitis a movable die plate opening and closing unit driven by an electric motor, a rotational die plate opening and closing unitis a rotational die plate opening and closing unitdriven by an electric motor, and a rotating unit for the rotational die plateis a rotation driving unit driven by an electric motor attached to a reversal pedestal

Growing community of inventors

Nagoya, Japan

Naoki Kato