Abstract: A foam molding method includes: moving a screw backward to take air into a heating barrel through a nozzle part in a state in which a shut-off nozzle is opened, the shut-off nozzle that opens or closes the nozzle part for injecting the molten resin and is disposed on a heating barrel; closing the shut-off nozzle and moving the screw forward, to diffuse the air taken into the heating barrel, in the molten resin in the heating barrel; feeding the molten resin forward while dispersing the air as the air bubbles in the molten resin by moving the screw backward while rotating it in a state in which the shut-off nozzle is closed; and opening the shut-off nozzle, to inject the molten resin containing the dispersed air bubbles into the cavity.

Abstract: An injection molding machine includes: a timing belt wound around a driving-side rotation member and a driven-side rotation member and configured to transmit power from the driving-side rotation member to the driven-side rotation member; a driving-side rotation detecting unit configured to detect a rotational speed of the driving-side rotation member; a driven-side rotation detecting unit configured to detect a rotational speed of the driven-side rotation member; and an abnormality detecting unit configured to detect an abnormality in the timing belt based on a relative speed difference between the rotational speed of the driving-side rotation member detected by the driving-side rotation detecting unit and the rotational speed of the driven-side rotation member detected by the driven-side rotation detecting unit in a predetermined period after the driving-side rotation member starts to rotate from a stopped state.

Abstract: A control method for an injection molding machine including a measurement process of measuring molten resin by moving a screw backward while rotating the screw in a heating barrel for melting a resin material, a rotational speed of the screw is reduced from a timing when a backward movement speed of the screw is reduced at the measurement process before the measurement process is completed, for stopping backward movement of the screw when the measurement process is completed, and the rotational speed and a rotation direction of the screw are controlled such that a back pressure as a pressure of the molten resin measured at the measurement process becomes a target pressure lower than the back pressure of when the measurement process is completed, when a target time comes.

Abstract: A friction stir welding device includes a table that has a placement surface on which a workpiece is to be placed and is rotatable about a table rotation axis intersecting the placement surface, a tool holder movable relative to the table in a direction along the placement surface and rotatable about a holder rotation axis parallel to the table rotation axis, and a welding tool supported by the tool holder and rotating about a tool rotation axis intersecting the holder rotation axis. A control device has a biaxial operation mode in which the welding tool in a rotating state is pressed against a welding portion of a side surface of the workpiece, the welding tool is relatively moved along the welding portion by rotating the table, and the tool holder is rotated so that the welding tool is directed in a normal direction of the welding portion.

Abstract: A workpiece machining device includes a positional deviation correction unit configured to correct a positional deviation of a radius end mill by detecting a positional deviation between a real contour line and an ideal contour line of the radius end mill. The positional deviation correction unit calculates a first correction value configured to make a center of a first arc section formed into an arc shape at a corner portion of the ideal contour line and a center of a second arc section formed into an arc shape at a corner portion of the real contour line to be identical to each other in a plane perpendicular to the rotational axis, and corrects a machining point by the radius end mill using the first correction value.

Abstract: A processing apparatus for processing a workpiece includes a tool holding part 9 for holding a tool 3 for processing a workpiece 5, a transferring part 11 for transferring the tool 3 for processing the workpiece 5 with the tool 3, and a control unit 13 for controlling the transferring part 11 so as to transfer the tool 3 with respect to the workpiece 5 on the basis of an NC program, and in the NC program, an arithmetic expression for calculating the position of the tool 3 is incorporated and the program is corrected on the basis of the relationship between the cutting transferring distance, the wear amount, and the deflection amount in addition to the contour error of the tool 3.

Abstract: A friction stir welding attachment includes a body configured to be attached to a spindle of a machine tool, a metalworking shaft rotatably supported by the body and including an attachment portion configured to attach a welding tool at an end thereof, and a pair of press components supported by the body and provided at respective sides across the attachment portion. The press components are each made of disc-shaped elastic material and are each supported in a manner rotatable around a rotation axis diagonally intersecting a rotation axis of the metalworking shaft.

Abstract: A die casting machine of an embodiment includes: a holding furnace holding molten metal; a sleeve located outside the holding furnace and having a molten metal supply port passing through a mold; a plunger sliding through the sleeve and including a plunger rod and a plunger tip fixed to a tip of the plunger rod; a molten metal supply pipe pushed against the sleeve to cover the molten metal supply port and supplying the molten metal into the sleeve; and a pushing force variable mechanism reducing a pushing force for the sleeve in the molten metal supply pipe when the plunger is sliding.

Abstract: A friction stir welding attachment includes a body configured to be attached to a spindle supported by a spindle head of a machine tool, a metalworking shaft rotatably supported by the body wherein a welding tool is attachable to the metalworking shaft, a plurality of air motors provided in the body, and a transmission mechanism configured to transmit a rotation of each of the plurality of air motors to the metalworking shaft. A fixing portion is provided to supply external air to the plurality of air motors. A drive air distributor is provided to distribute drive air to the air motors. A rotation sensor for detecting a rotation state is provided to the metalworking shaft.

Abstract: A gap control part controls a clamping device so that mating surfaces in a die face each other across a gap, and thereby a cavity and an external part of the die communicate across the gap. A molten metal feed control part controls a molten metal feed device so as to feed molten metal into a sleeve when the gap is being maintained. An injection control part controls an injection device so as to start a forward movement of a plunger at a time when the gap is maintained and there is the molten metal in the sleeve. A clamping control part controls a clamping device so as to make the mating surfaces abut against each other to eliminate the gap after the forward movement of the plunger is started and before the molten metal reaches a molten metal surface height at which the molten metal flows into the gap.

Abstract: A surface treatment apparatus includes a mounting device, a housing unit, a surface treatment device, a conveyance device, and a first adjustment device. A workpiece is mounted on the mounting device. The housing unit houses the workpiece mounted on the mounting device. The surface treatment device performs at least one kind of surface treatment on the workpiece housed in the housing unit. The conveyance device conveys the workpiece mounted on the mounting device along the surface treatment device. The first adjustment device adjusts an orientation of the workpiece according to a conveyance position by the conveyance device and a position of the surface treatment device.

Abstract: A die casting machine of an embodiment includes: a holding furnace holding molten metal; a sleeve located outside the holding furnace and having a molten metal supply port passing through a mold; a plunger sliding through the sleeve and including a plunger rod and a plunger tip fixed to a tip of the plunger rod; a molten metal supply pipe supplying the molten metal into the sleeve and attachable to and detachable from the molten metal supply port; and a moving mechanism detaching the molten metal supply pipe from the molten metal supply port when the plunger is sliding.

Abstract: This method for producing a fiber-reinforced composite material includes: a fiber dispersion process of providing a fiber-dispersed resin by kneading a resin 10a with fibers 10b to disperse the fibers 10b in the resin 10a; and a molecular weight reduction process in which, while transporting the fiber-dispersed resin along an outer peripheral surface of a screw body 37 provided with a passage 88 inside, the fiber-dispersed resin passes from an inlet 91 of the passage 88 to an outlet 92 of the passage 88 and a shear force is applied to the fiber-dispersed resin by restricting the transport of the fiber-dispersed resin with a barrier unit 82 disposed between the inlet 91 and the outlet 92 of the passage 88 on the outer peripheral surface.

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 control device of a processing machine controls a first drive source based on detection values from a first sensor so that a reference workpiece other than a workpiece is processed from a first direction by a tool into a prescribed target shape. The control device measures a shape of the reference workpiece based on a detection value from the first sensor at the time when contact in the first direction of a touch sensor with the processed reference workpiece by the touch sensor. The control device specifies a first deviation amount of a position of the tool in the X-direction based on a deviation amount in the first direction between the target shape and the measured shape, and corrects control for processing the workpiece based on the specified first deviation amount.

Abstract: A production device for melt-blown non-woven fabric, with which a high molecular weight polymer can be reduced in molecular weight by applying a shear force to the high molecular weight polymer without adding an additive such as a peroxide that promotes thermal decomposition reaction, and a low molecular weight polymer can be efficiently produced. The low molecular weight polymer and the melt-blown non-woven fabric are produced using a continuous high shearing device that applies a shear force to the high molecular weight polymer serving as a raw material by rotation of a screw body 37 to reduce the molecular weight of the high molecular weight polymer so as to obtain a low molecular weight polymer, and cools the low molecular weight polymer by passing the low molecular weight polymer through a passage 88 arranged in the axial direction inside the screw body 37.

Abstract: An extruder has a pair of linkage parts configured to respectively link end portions of a pair of output shafts of the speed reducer with end portions of a pair of screws coaxially. The linkage parts each has: a coupling having an insertion hole into which the end portion of the screw and the end portion of the output shaft are inserted; and a locking part attached to the end portion of the output shaft. The coupling has a first receiving portion configured to receive the end portion of the output shaft; the second receiving portion configured to receive the locking part; and a step portion formed between the first receiving portion and the second receiving portion. As the step portion is locked by the locking part, a relative movement of the coupling relative to the output shaft in a direction towards the screw is restricted.

Abstract: A screw includes a screw main body, a conveyance portion conveying a raw material, and a passage provided in the screw main body. The passage includes a first passage element, a second passage element, and a third passage element. The screw main body has a plurality of cylindrical bodies arranged in an axial direction of the rotating shaft. At least a portion of the conveyance portion is formed on outer peripheral surfaces of the cylindrical bodies adjacent to each other, and the passage is formed in the cylindrical body so as to cross over between the adjacent cylindrical bodies.

Abstract: A die casting machine of an embodiment includes: a base; a fixed die plate fixed onto the base and holding a fixed die; a movable die plate provided on the base to be movable in a mold opening and closing direction and holding a movable die to face the fixed die; an injection device filling a molten metal into a cavity formed by the fixed die and the movable die and applying a first pressure to the molten metal; a first pressurizing device pressurizing the molten metal filled in the cavity in a region other than a product region of the cavity and applying a second pressure to the molten metal; and a control device controlling the first pressurizing device so that the second pressure becomes higher than the first pressure.

Abstract: A molding machine of an embodiment includes: a base; a fixed die plate holding a fixed die; a movable die plate provided on the base and closing direction and holding a movable die to face the fixed die; a toggle mechanism capable of clamping the fixed die and the movable die; a link housing provided on the base and allowing one end of a link of the toggle mechanism to be fixed thereto; a first motor driving the toggle mechanism; a second motor moving the movable die plate and the link housing; an extrusion plate allowing an extrusion pin to appear and disappear in the movable die; a guide bar fixed to any one of the link housing and the movable die plate, penetrating the extrusion plate, and slidably holding the extrusion plate; a positioning member positioning the extrusion plate; a tie bar; and an injection device.