Abstract: A die block device in an extruder including a cooling mechanism of a simple structure reciprocable between an operation position and a changing position. A die block portion configured to reciprocate between an operation position for extrusion and a changing position for die changing; and a gas supply portion configured to supply a cooling gas toward the die block portion. The die block portion includes a block body having a support surface that supports the die, and a gas channel having a supply port for the cooling gas and an exhaust port that extends from the supply port through the block body and opens into the support surface.

Abstract: A control device of an injection molding machine, the injection molding machine including: a mold clamping device that advances and retracts a movable mold with respect to a fixed mold; and an injection device that injects and fills a molten material into a cavity formed between both the molds, the control device including: a display unit that displays a setting screen for setting molding conditions of the injection molding machine; and a setting unit that sets the molding conditions based on information displayed on the setting screen.

Abstract: A control device of an injection molding machine, the injection molding machine including: a mold clamping device that advances and retracts a movable mold with respect to a fixed mold; and an injection device that injects and fills a molten material into a cavity formed between both the molds, the control device including: a display unit that displays a setting screen for setting molding conditions of the injection molding machine; and a setting unit that sets the molding conditions based on information displayed on the setting screen.

Abstract: An extrusion press shearing device includes: a converter that converts rotational motion of a ball screw into linear motion of a shearing slide drive frame; a shearing slide attached to the leading end of the shearing slide drive frame; and hydraulic cylinders attached to the shearing slide drive frame, wherein the ball screw of the converter and the hydraulic cylinders are arranged in parallel, and the ball screw is rotated to move the shearing slide vertically so that a discard is cut off by the hydraulic cylinders.

Abstract: A die casting machine is provided with a movable platen for holding a movable mold, a stationary platen for holding a stationary mold, and tie bars inserted into insertion holes provided in the movable platen and the stationary platen, the movable platen being arranged so as to be capable of advancing to and retreating from the fixed platen along the tie bars. A hollow section is provided in at least one of the movable platen and the stationary platen.

Abstract: A mold clamp control method for an injection molding machine having a toggle-type mold clamping mechanism. The mold clamp control method includes: a low-pressure mold clamping step that performs position hold control by which a crosshead is held in a set holding position in a state where a toggle link has been bent, when injection-filling is started; and a compression-press step that performs speed and position control by which the crosshead is advanced toward a set advancement position from the set holding position in a state where a first output upper limit value has been provided to a driving section. Advancement of the crosshead is continued in at least part of the compression-press step in a state where a generated output of the driving section is maintained at the first output upper limit value.

Abstract: Provided is an injection molding method for resin that contains reinforcing fiber, the method being capable of easily eliminating uneven distribution of added components. The injection molding method is provided with: a plasticizing step for supplying resin pellets P and added components to a cylinder equipped with a screw 10, which has a rotating axis as the center is capable of rotating normally and in reverse, and generating molten resin by rotating the screw 10 in the normal direction; and an injecting step for injecting the molten resin M comprising the added components into a cavity. In the plasticizing step, a reverse rotation operation for reversing the rotation of the screw 10 is performed or a screw-stopping operation of stopping the normal rotation of the screw 10 is performed with a prescribed timing and for a prescribed period.

Abstract: A method for producing an injection molded article including a highly-filled fiber-reinforced resin composition includes a step of charging a first resin feedstock including a thermoplastic polymer into an injection molding machine through a first inlet port; a step of charging a second resin feedstock into the injection molding machine through a second inlet port disposed downstream of the first inlet port, the second resin feedstock including a masterbatch that includes long fibers impregnated with a resin mixture including a thermoplastic polymer and an acid-modified polyolefin; a step of melt-kneading the first resin feedstock and the second resin feedstock together in the injection molding machine to give a fiber-reinforced resin composition melt; and a step of injection molding the fiber-reinforced resin composition melt in a mold, the first resin feedstock being charged intermittently or continuously from the start to the end of the charging of the second resin feedstock.

Abstract: An extrusion press die-slide device is equipped with: a fixed frame; a moveable frame that can move linearly but which is supported by the fixed frame in a non-rotatable manner; a first motion conversion mechanism that converts input rotational motion to linear motion and outputs the same to cause the moveable frame to move linearly with respect to the fixed frame; and a second motion conversion mechanism attached to the moveable frame and equipped with a pusher to impart a pressing force to a die of the extrusion press, and which transmits the input rotational motion to the first motion conversion mechanism and converts the input rotational motion to linear motion and outputs the same to cause the pusher to move linearly with respect to the moveable frame.

Abstract: A shear device (21) of an extrusion press having a booster mechanism using an air cylinder or electric motor to supplement thrust to an amount corresponding to hydraulic pressure is provided. A fastening part pressing against a die stack (4) is configured by a booster mechanism using a lever and a shear guide (24) is pressed against a horseshoe (13) to fasten it in the extrusion direction. Further, a clearance between a surface of the die stack and a shear knife can be held constant. Also, a booster mechanism using a lever is employed for a tilt mechanism for the shear guide in the extrusion press.

Abstract: A hybrid extrusion press is provided with electric motors and hydraulic assist cylinders to cause a container holder to slide, wherein connecting rods are fastened to a container holder, the hydraulic assist cylinders have piston rods and gate devices connecting or disconnecting the connecting rods and the piston rods, and the gate devices are provided with hollow members fastened to the piston rods, enlarged diameter parts provided at single ends of the connecting rods and moving back and forth inside hollow parts of the hollow members, and locking parts provided at the hollow members and locking the enlarged diameter parts.

Abstract: A mold for injection molding includes a design-surface-side mold which is capable of forming a design surface of a resin molded product and a non-design-surface-side mold which is capable of forming a mold cavity with the design-surface-side mold. A convex portion is provided in any one of the design-surface-side mold and the non-design-surface-side mold so as to protrude toward the other one. The mold for injection molding is configured to be capable of switching a first mold closing state in which the convex portion is present from any one of the design-surface-side mold and the non-design-surface-side mold over the other one and a second mold closing state in which the convex portion is not present from any one of the design-surface-side mold and the non-design-surface-side mold over the other one.

Abstract: An electric powered extrusion press pushes an extrusion stem by extrusion force generated by an electric powered drive device so that pressure is applied to a billet and a predetermined product is extruded through a die, wherein the electric powered drive device is provided with one or more freely rotatable wire drums, an electric powered extrusion-use main motor makes the wire drums rotate wind up wires and thereby give a thrust to movable pulleys in the extrusion direction so that a crosshead and extrusion stem are driven to advance through an extrusion movement part.

Abstract: A mold clamp control method for an injection molding machine having a toggle-type mold clamping mechanism. The mold clamp control method includes: a low-pressure mold clamping step that performs position hold control by which a crosshead is held in a set holding position in a state where a toggle link has been bent, when injection-filling is started; and a compression-press step that performs speed and position control by which the crosshead is advanced toward a set advancement position from the set holding position in a state where a first output upper limit value has been provided to a driving section. Advancement of the crosshead is continued in at least part of the compression-press step in a state where a generated output of the driving section is maintained at the first output upper limit value.

Abstract: The present invention comprises: a base layer molding step that injection-fills a mold cavity with a base layer resin to mold a base layer; a first expansion step that causes the volume of the mold cavity to expand to a specified quantity such that a certain space is formed between an outer surface of the base layer molded by the base layer molding step and an inner surface of the mold; a first injection-filling step that injection-fills the space formed by the first expansion step with a first resin; a second expansion step that, after the start of the first injection-filling step, causes the mold cavity to expand to a specified quantity such that the space is expanded; and a second injection-filling step that, after completion of the first injection-filling step and after the start of the second expansion step, injection-fills a second resin into the first resin.

Abstract: An extrusion method using an extrusion press including an end platen to which a pressure ring is provided, a die, a container, a drive part for movement of the container, and a main cylinder device having an extrusion stem to form a billet into a shape includes extruding the billet loaded in the container by the extrusion stem from the die to shape it to an extruded material, releasing sealing pressure from the die, cutting the billet between the die and the container and between the die and the pressure ring by moving the die, and resuming shaping of extruded materials by the billet remaining inside the container.

Abstract: A billet transport device inserts a billet emerging from a billet heater into a container of an extrusion press device, and includes a conveyor transporting a billet from a billet heater, an overhead type billet carrier directly transporting a billet from the conveyor to a billet loader, and a billet loader transporting a billet from the outside to inside of the extrusion press device. Further, the billet loader is comprised of an insertion roller device inserting a billet into a container and a billet insertion device placed at the front end of the billet loader.

Abstract: An injection molding method comprising: a mold clamping step of clamping a first mold and a second mold to form a mold cavity; a first injection filling step of injecting a foamable molten resin into the mold cavity to fill an interior of the mold cavity with the foamable molten resin, after completion of the mold clamping step; a mold cavity expansion step of expanding the mold cavity by a specified quantity to cause the foamable molten resin to foam, after the start of the first injection filling step; and a second injection filling step of pouring a molten resin or gas into the foamable molten resin within the mold cavity, after the completion of the first injection filling step, and after the start of the mold cavity expansion step.

Abstract: A double action extrusion press has: a main crosshead provided freely movable with the application of pressure in an axial direction by a main cylinder and having a pressing system disposed on the tip thereof; and a piercer cylinder built into the main cylinder and provided within the main ram, allowing a mandrel to slide within the pressing system and the main crosshead. The double action extrusion press complements the extrusion force by force equivalent to a mandrel pull force acting on a mandrel stop rod by affixing the piercer cylinder in contact to a piercer crosshead that is joined with the mandrel stop rod and applying hydraulic force to the rod side of the piercer cylinder.

Abstract: A shearing device for an extrusion press is adapted for cutting off from each other an extruded product and a discard which is the residue of a billet, the shearing device being configured so that the configuration thereof is simplified to reduce costs required for maintenance and production and so that the gap between the shear blade and an end surface of a die is automatically adjusted to improve the shearing accuracy, thereby providing a satisfactory cut surface. A shear cylinder (21) is mounted in a downward facing position to a frame (16) provided on the side of an end platen (11) which faces a container (10). A shear guide (18) is mounted to the frame (16) in a tiltable manner, the shear guide (18) having a shear blade (24) which is provided at the lower end thereof and guiding a shear slide (23).