Abstract: A movable platen according to the present invention includes: a mold clamping platen 42 having a projecting portion 62 in a mold closing direction-side surface; a mold mounting platen 44 mounted to the projecting portion 62 of the mold clamping platen 42; and a guide mechanism 50 fixed to the mold clamping platen 42 and supporting the mold mounting platen 44. Only the mold clamping platen 42 is fixed to the guide mechanism 50, while the mold mounting platen 44 is not fixed but placed on platen surface support portions 52.

Abstract: A movable platen according to the present invention includes: a mold clamping platen 42 having a projecting portion 62 in a mold closing direction-side surface; a mold mounting platen 44 mounted to the projecting portion 62 of the mold clamping paten 42; and a guide mechanism 50 fixed to the mold clamping paten 42 and supporting the mold mounting platen 44. Only the mold clamping paten 42 is fixed to the guide mechanism 50, while the mold mounting platen 44 is not fixed but placed on platen surface support portions 52.

Abstract: A movable platen according to the present invention includes: a mold clamping platen 42 having a projecting portion 62 in a mold closing direction-side surface; a mold mounting platen 44 mounted to the projecting portion 62 of the mold clamping platen 42; and a guide mechanism 50 fixed to the mold clamping platen 42 and supporting the mold mounting platen 44. Only the mold clamping platen 42 is fixed to the guide mechanism 50, while the mold mounting platen 44 is not fixed but placed on platen surface support portions 52.

Abstract: 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 apparatus 40 according to the present invention includes a guide mechanism which movably engages a rail 41 extending on a frame 11 in the direction of movement of a movable platen 16, to which a movable mold 19 is to be mounted, and which movably supports the movable platen 16. The guide mechanism includes a linear guide 42 composed of blocks 42a to 42d arranged in a line, in which at least one of the blocks 42a to 42d, e.g. the blocks 42b, 42c, has a load rating which differs from the load rating(s) of the other block(s), e.g. the blocks 42a, 42d.

Abstract: 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.

Abstract: A movable platen according to the present invention includes: a mold clamping platen having a projecting portion in a mold closing direction-side surface; a mold mounting platen mounted to the projecting portion of the mold clamping paten; and a guide mechanism fixed to the mold clamping paten and supporting the mold mounting platen. Only the mold clamping paten is fixed to the guide mechanism, while the mold mounting platen is not fixed but placed on platen surface support portions.

Abstract: There is provided an opening/closing apparatus which can 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 mold replacement, An opening/closing apparatus according to an embodiment includes: a fixed platen 20 to which one mold 21 of a pair of molds is to be mounted; a movable platen 22 to which the other mold 23 is to be mounted; a pressure-receiving platen 24 connected to the fixed platen 20 via tie bars 36; an opening/closing mechanism for opening/closing the molds by moving the movable platen 22 back and forth, including a toggle link mechanism 28 connecting the pressure-receiving platen 24 and the movable platen 22; a first drive mechanism for driving the opening/closing mechanism; and a second drive mechanism 50 for applying a load to the movable platen 22 in a given direction in conjunction with the first drive mechanism.

Abstract: 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 apparatus 40 according to the present invention includes a guide mechanism which movably engages a rail 41 extending on a frame 11 in the direction of movement of a movable platen 16, to which a movable mold 19 is to be mounted, and which movably supports the movable platen 16. The guide mechanism includes a linear guide 42 composed of blocks 42a to 42d arranged in a line, in which at least one of the blocks 42a to 42d, e.g. the blocks 42b, 42c, has a load rating which differs from the load rating(s) of the other block(s), e.g. the blocks 42a, 42d.

Abstract: A nozzle touch mechanism (50) includes a base frame (6), a stationary platen (4) to which a mold (5) is to be attached, and an injection mechanism (1). The injection mechanism (1) is moved it toward the stationary platen (4) by means of a ball screw shaft (11). A motor portion (14) which applies a pressing force to the mold (5) from a nozzle (3) is connected to one end (11a) of the ball screw shaft (11). A connection mechanism (7) is provided which is connected to the other end (11b) of the ball screw shaft (11) and to the stationary platen (4) at a support located above the center of the nozzle (3). When no pressing force is applied to the mold (5) from the nozzle (3) by the motor portion (14), springs (18) can press the connection mechanism (7) in such a direction as to move it away from the stationary platen (4) with respect to the base frame (6).

Abstract: A nozzle touch mechanism (50) includes a base frame (6), a stationary platen (4) to which a mold (5) is to be attached, and an injection mechanism (1). The injection mechanism (1) is moved it toward the stationary platen (4) by means of a ball screw shaft (11). A motor portion (14) which applies a pressing force to the mold (5) from a nozzle (3) is connected to one end (11a) of the ball screw shaft (11). A connection mechanism (7) is provided which is connected to the other end (11b) of the ball screw shaft (11) and to the stationary platen (4) at a support located above the center of the nozzle (3). When no pressing force is applied to the mold (5) from the nozzle (3) by the motor portion (14), springs (18) can press the connection mechanism (7) in such a direction as to move it away from the stationary platen (4) with respect to the base frame (6).

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: An exhaust control device for an exhaust system for an internal combustion engine specifically applied to a motorcycle. An exhaust control device is incorporated that includes a single valve body having a plurality of exhaust gas passages that cooperate with each of a plurality of exhaust pipes that extend from the engine to the valve body. Parallel valve shafts are supported in the valve body and support valves that control the flow through the exhaust gas passages.

Abstract: An improved valve for use in an exhaust system to increase the performance of the engine throughout the entire engine and load speed ranges by providing reflective areas that cooperate with the individual exhaust pipes of the engine to reduce pressure pulses in the combustion chamber during valve overlap periods. A number of embodiments of compact valve constructions are shown that employ relatively short journaling shafts for minimizing the effects of thermal expansion.