Toshiba Kikai Kabushiki Kaisha

Shibaura Machine Co., Ltd.

Hideaki Kitta

Masato Kinoshita

Noriyuki Sasaki

Atsushi Takemoto

Motoyasu Ohue

Toshihiro Kasai

Makoto Nishizawa

Jun Koike

Takaki Miyauchi

Hiroyuki Onuma

A movable platen according to the present invention includes: a mold clamping platenhaving a projecting portionin a mold closing direction-side surface; a mold mounting platenmounted to the projecting portionof the mold clamping platen; and a guide mechanismfixed to the mold clamping platenand supporting the mold mounting platen. Only the mold clamping platenis fixed to the guide mechanism, while the mold mounting platenis not fixed but placed on platen surface support portions

Opening/closing apparatus and molding apparatus comprising the same

Movable platen, opening/closing apparatus and molding apparatus

The present invention provides a movable platen support apparatus which, with a linear guide having a minimum necessary load rating, can secure a sufficient traveling life of the linear guide and, in addition, can secure the rigidity of the linear guide which is necessary and sufficient taking into consideration a moment that acts on a movable platen. A movable platen support apparatusaccording to the present invention includes a guide mechanism which movably engages a railextending on a framein the direction of movement of a movable platen, to which a movable moldis to be mounted, and which movably supports the movable platen. The guide mechanism includes a linear guidecomposed of blockstoarranged in a line, in which at least one of the blocksto, e.g. the blocks, has a load rating which differs from the load rating(s) of the other block(s), e.g. the blocks

Movable platen support apparatus, movable platen, mold opening/closing apparatus and molding apparatus

An opening/closing apparatus is provided for use in a molding apparatus, such as an injection molding machine. The opening/closing apparatus may eliminate the influence of a slight gap formed between a bush and a pin in a link connecting portion of a toggle link mechanism and in addition, can enhance workability e.g., in mold replacement. An opening/closing apparatus of the present technology may include an opening/closing mechanism including a toggle link mechanism connecting a pressure-receiving platen and a movable platen; a drive mechanism for driving the opening/closing mechanism; and a core-back hydraulic cylinder for applying a load to the movable platen in a given direction in conjunction with the first drive mechanism, configured to perform the operation of slightly opening of the mold.

Opening/closing apparatus and molding apparatus

A nozzle touch mechanism () includes a base frame (), a stationary platen () to which a mold () is to be attached, and an injection mechanism (). The injection mechanism () is moved it toward the stationary platen () by means of a ball screw shaft (). A motor portion () which applies a pressing force to the mold () from a nozzle () is connected to one end () of the ball screw shaft (). A connection mechanism () is provided which is connected to the other end () of the ball screw shaft () and to the stationary platen () at a support located above the center of the nozzle (). When no pressing force is applied to the mold () from the nozzle () by the motor portion (), springs () can press the connection mechanism () in such a direction as to move it away from the stationary platen () with respect to the base frame ().

Nozzle touch mechanism and injection molding machine

An injection molding machine that can prevent a stationary platen and a mold attached thereto from being tilted by applying a nozzle touch force. A connection part is mounted on a stationary platen via a connection pipe. The connection part is mounted on a connection mechanism via a block. A ball screw shaft as a nozzle touch drive mechanism is rotatably mounted on the connection mechanism. The block is adjusted for a mounting position thereof such that tilt in the stationary platen and a mold attached thereto is eliminated when the mold is attached to the stationary platen and a nozzle touch force is applied to the mold. The nozzle touch force prevents the stationary platen and the mold from being tilted.

Injection molding machine

A screw is moved along an axis by a screw advancement-retraction mechanism. A screw rotation mechanism is supported for movement along the axis by a pair of supporting members, each includes a rail for use as a guide member. The supporting members are arranged individually along tie-bars for use as lateral members and extend parallel to the tie-bars. One longitudinal end portion of each supporting member is secured to a frame of an injection unit by a fixing portion including a fixing member. The other end portion of the supporting member is supported on each tie-bar by a movable portion including a sliding member. The sliding member is movable along an axis of the tie-bar. With this arrangement, deformation, if any, of the tie-bar is prevented from affecting the rail, so that the screw rotation mechanism and the screw can move steadily.

Injection molding machine having a guide member

An injection apparatus includes a guide member on a frame via a guide member support mechanism. A screw rotation mechanism is assembled on the guide member. This prevents the guide member from being affected by deformation of the frame and allows the screw rotation mechanism to be smoothly moved. Thus, a screw rotatably coupled to the screw rotation mechanism can be smoothly moved.

A horizontal multi-material molding machine includes a rotary table having a rotation axis center in a horizontal direction, a multi-material molding metal mold mounted on the rotary table, injection plunger units disposed to advance to and retreat from the multi-material molding metal mold for injecting a molten resin into cavities of the multi-material molding metal mold, a servo motor for rotating the rotary table, and a brake mechanism mounted on the servo motor and actuated when the servo motor is stopped for maintaing the position of the rotary table.

Growing community of inventors

Numazu, Japan

Hideaki Kitta