Abstract: According to an embodiment, a method for manufacturing a joined metal member includes: disposing a first metal member inside a mold of an injection molding apparatus, the first metal member being made of a first metal material, unevenness being formed over a surface of the first metal member, and an oxide film being formed so as to cover the unevenness; and injecting a second metal material into the mold, and thereby molding a second metal member and joining the second metal member to the first metal member, the second metal material being, when it is injected into the mold, in a semi-molten state, or in a molten state in which a difference between a temperature of the second metal material and a liquidus temperature thereof is smaller than or equal to 30° C.

Abstract: A consumed power calculation method for an electric motor for calculating consumed power of the electric motor in an industrial machine including one or more electric motors supplied with a current and driven by an inverter, the consumed power calculation method including: measuring a current Im supplied to the electric motor; obtaining an output torque Tm of the electric motor based on the current Im; and calculating consumed power Wm of the electric motor by the equation: Wm=2?·Tm·Rm/(?m·?p)/60+Pw, where Rm is a rotational speed of the electric motor, ?m is a motor efficiency of the electric motor, ?p is a power factor, and Pw is a switching loss of the inverter.

Abstract: A molding machine includes: a tie bar connected continuously to any one of a stationary platen and a movable platen, and including an engagement groove; a first engagement member configured to engage with or move away from the engagement groove of the tie bar; a second engagement member configured to engage with or move away from the engagement groove of the tie bar, and configured to be displaceable in an axial direction of the tie bar; a force transmission member located opposite the first engagement member across the second engagement member, and including a pressure surface to press the second engagement member and a through hole in which the tie bar is inserted; and a drive mechanism configured to use the force transmission member to cause the second engagement member to be displaceable in the axial direction of the tie bar with respect to the first engagement member.

Abstract: A resin intrusion prevention structure for preventing resin intrusion into a heater in a shut-off nozzle, the shut-off nozzle including a nozzle body having an injection flow path, through which resin flows, in an axial direction and a shut-off valve configured to open and block the injection flow path. The resin intrusion prevention structure is provided in a vicinity of a sliding exposed portion, which is exposed to an outer circumferential surface of the nozzle body in a sliding portion, and is configured to prevent the resin leaking from the sliding exposed portion from intruding into the heater provided in the shut-off nozzle.

Abstract: A bonded substrate includes a quartz substrate and a piezoelectric substrate which is bonded on the quartz substrate and on which a surface acoustic wave propagates, wherein the quartz substrate and the piezoelectric substrate are bonded by covalently coupling at a bonding interface, and an orientation of the quartz substrate and an orientation of the piezoelectric substrate intersect with each other on an orthogonal direction side or in the range of 65 degrees to 115 degrees in a bonding surface direction.

Abstract: An injection nozzle is attachable to a tip end of a heating cylinder and having an in-nozzle flow path formed therein. The injection nozzle is attached to the heating cylinder by being pressed against the heating cylinder by a nozzle pressing member that is fixed to an end surface of a tip end of the heating cylinder. An outer peripheral surface of the injection nozzle has a sensor hole that is opened at a position contacting the nozzle pressing member, and a temperature sensor is inserted into the sensor hole.

Abstract: A screw driving device includes: a plasticization motor; a rotation drive shaft provided coaxially with a screw and configured to rotate the screw; and a transmission mechanism configured to decelerate rotation of the plasticization motor and transmit the rotation to the rotation drive shaft. The transmission mechanism includes: a speed reducer whose output shaft is coupled to the rotation drive shaft; a drive rotation member provided in the plasticization motor; a driven rotation member provided on an input shaft of the speed reducer; and one endless string-shaped force transmission member wound around the drive rotation member and the driven rotation member.

Abstract: An injection molding machine for foam molding includes a heating cylinder having a gas injection port, a screw which is drivable in the heating cylinder, a gas supply device configured to supply a gas to the gas injection port, the gas supply device including a valve mechanism in a gas flow path, and a control device. The control device is configured to control the valve mechanism to close the valve mechanism at least once in a molding cycle, and keep the valve mechanism open at least in a measuring step.

Abstract: A vertical injection molding machine includes a mold clamping device configured to clamp a mold and an injection device configured to inject an injection material. The mold clamping device includes a fixed plate, an upper movable plate that is driven up and down with respect to the fixed plate, and a turntable provided on the fixed plate and is rotatable with respect to the fixed plate. In a case the turntable is provided with a plurality of types of molds configured to mold different molded articles, when the turntable is rotated, one type of the molds is switched to a molding target mold and the other type of the molds is switched to a standby target mold, and the molding target mold is clamped by driving of the upper movable plate and is injected with the injection material.

Abstract: A vertical injection molding machine includes a mold clamping device configured to clamp a mold, an injection device provided on the mold clamping device, the injection device being configured to inject an injection material, a controller including an operation terminal, the operation terminal provided on an operation side of the vertical injection molding machine, and a safety fence surrounding other three sides of the vertical injection molding machine except for the operation side. Alight curtain and a cover are provided on the operation side. The light curtain includes a plurality of spaced light sources and the same number of light receiving sensors, the light curtain being configured to detect an entry into the mold clamping device from the operation side. The cover is disposed on or above the light curtain.

Abstract: An extruder which can be applied to various types of resin and elastomer without having to replace a die is provided. An extruder of the present inventions has: a barrel to which raw material, that is raw elastomer or raw material resin, is supplied; a screw that is driven to rotate in the barrel in order to process the raw material together with the barrel; and die 5 that is provided at a discharge point of the barrel and that discharges the raw material that has been processed. Die 5 includes first flat plate 11 having at least one first hole 13 and second flat plate 12 having at least one second hole 14, wherein first flat plate 11 and second flat plate 12 are arranged adjacent to each other along longitudinal axis X1 of the barrel, and at least either first flat plate 11 or second flat plate 12 is movable relative to the other flat plate such that an overlapping part of first hole 13 and second hole 14 can be varied.

Abstract: An electric injection molding machine includes an injection apparatus including a screw configured to inject a resin, a driving direction conversion part configured to move the injection apparatus forward and backward in an axial direction of the screw, and a first motor coaxially connected to a rotation shaft of the driving direction conversion part, the first motor being configured to drive the driving direction conversion part. The first motor includes a motor connection part, the motor connection part being configured to connect a second motor to the first motor coaxially with the driving direction conversion part on a side of the first motor opposite to a side thereof on which the driving direction conversion part is connected thereto, the second motor being configured to drive the driving direction conversion part in an interlocking manner with the first motor.

Abstract: A twin-screw extruder is provided in which screws have different rotational speeds depending on the process of treating the raw material and in which degradation of the raw material is less likely to occur. Twin-screw extruder 1 has two screws 3, 5 that extend in parallel to each other. Each screw 3, 5 has cylindrical upstream screw 31 and downstream screw 35, wherein upstream screw 31 has shaft hole 315 that extends in longitudinal direction X and screw flight 316 on an outer circumferential surface thereof, and downstream screw 35 includes large diameter portion 353 having screw flight 357 on an outer circumferential surface thereof and small diameter shaft portion 351 that has a smaller diameter than large diameter portion 353, wherein small diameter shaft portion 351 of downstream screw 35 is inserted into shaft hole 315 of upstream screw 31. Upstream screw 31 and downstream screw 35 can be independently rotated.

Abstract: It is an object of the present invention to provide a feed block that can stably produce a resin sheet in which a main material and an auxiliary material are stacked on top of another. The feed block feeds laminated molten resin P to a die, wherein laminated molten resin P has at least one main material A that consists of a molten resin in a shape of a plate or a sheet and auxiliary material B that consists of a molten resin in a shape of a plate or a sheet, wherein auxiliary material B is stacked on at least a part of at least one main material A with regard to a width direction thereof.

Abstract: An injection piston can be driven along an axial direction of a heating barrel. The injection piston is connected to a screw and drives the screw along the axial direction. An injection hydraulic cylinder drives the injection piston in the axial direction by pressure of hydraulic oil. Inside of the injection hydraulic cylinder being partitioned into a first chamber and a second chamber. An oil discharge port is provided in the injection hydraulic cylinder and discharges the hydraulic oil from the second chamber. A first valve is inserted in a path for discharging the hydraulic oil discharged from the second chamber. A second valve opens when the pressure of the provided oil is higher than a first threshold value. The first valve closes when the pressure of the hydraulic oil supplied through the second valve is applied to the first valve.

Abstract: In a surface acoustic wave resonator according to an embodiment, a quartz-crystal substrate includes an AT-cut 0° X-propagation first quartz-crystal substrate and a Z-cut second quartz-crystal substrate bonded over the first quartz-crystal substrate. A propagation direction of a surface acoustic wave in the second quartz-crystal substrate is inclined from an X-axis of a crystal by 27 to 33°, 87 to 93°, or 147 to 153°, and a thickness of the second quartz-crystal substrate is 0.2 to 1.0 times a wavelength of the surface acoustic wave.

Abstract: A wave plate 1 according to an embodiment includes a first birefringent substrate 10 including a first main surface and an optical axis 13 in a first direction; a second birefringent substrate 20 disposed over the first birefringent substrate 10 and including a second main surface and an optical axis 23 in a second direction; and a third birefringent substrate 30 disposed over the second birefringent substrate 20 and including a third main surface and an optical axis 33 in a third direction. The first birefringent substrate 10 and the second birefringent substrate 20 are made of the same kind of birefringent material. The first main surface, the second main surface, and the third main surface are disposed in parallel to one another. The first direction and the second direction are parallel to the first main surface and the second main surface.

Abstract: The apparatus of the invention includes: an acquisition unit 101 that acquires input information including resin properties and acquires, as output information, a specified value of a physical quantity related to a kneaded resin or a kneading machine; a storage unit 16 that stores a knowledge file 162 containing correlations among the input information, the physical quantity and a plurality of screw configurations; and a search unit 106 and a configuration generator unit 107 together that infers, on the basis of the input information and the knowledge file 162, such a screw configuration that is able to meet the specified value.

Abstract: An injection molding machine for foam molding includes: a heating cylinder; a screw disposed in the heating cylinder; and a plurality of inlet portions provided in the heating cylinder and configured to introduce inert gas. An inside of the heating cylinder includes a starvation section on an upstream side in which a pressure of the resin is decreased, and the inert gas from the plurality of inlet portions being to be supplied in the starvation section. Each of the plurality of inlet portions is provided with a check valve or an opening and closing mechanism. A product P×N of an interval P of the plurality of inlet portions and a number N of the inlet portions is 0.5H or more and 1.71H or less with respect to a length H of the starvation section.

Abstract: An injection device includes: a heating cylinder; a screw disposed in the heating cylinder; and a pair of piston cylinder components disposed on two sides of the heating cylinder. The pair of piston cylinder components are installed so that one end portion of each of the pair of piston cylinder components is connected to a mold clamping device, and the heating cylinder and the screw are integrally driven in a direction close to or away from the mold clamping device by expansion and contraction of the pair of piston cylinder components. One of the pair of piston cylinder components is provided with a stop mechanism configured to stop expansion and contraction of the piston cylinder component.