An injection molding apparatus comprises a support base and a mold carrier removably mounted to the support base. The mold carrier includes a mounting plate with attachment features for engaging the support base. A mold with two mold plates is slidably mounted to the mounting plate. A clamp is operable to move the plates between open and closed positions. In the closed position, the plates abut one another. In the open position, the plates are spaced apart for removing molded articles.

A higher-level substrate and lower-level substrates communicatively connected to the higher-level substrate are provided. The higher-level substrate is configured to obtain identification information from each of the lower-level substrates at first timing, to obtain identification information from each of the lower-level substrates at second timing following the first timing, and when the identification information obtained at the first timing is different from the identification information obtained at the second timing, notify a user of substrate replacement of that lower-level substrate for each lower-level substrate.

A moving system for structures includes a linking unit located between first and second structures that can move in a first direction. A drive unit is connected to the first structure, and the first and second structures are connected. The second structure moves along the first direction when the drive unit moves the first structure along the first direction. The linking unit has a first part located on the side of the first structure and a second part located on the side of the second structure. The first and second parts line up along the first direction. The first part can shift toward the second part in a second direction different from the first direction without moving along the first direction, and the second part can shift toward the first part in the second direction without moving along the first direction.

A moving system for structures includes a linking unit located between first and second structures that can move in a first direction. A drive unit is connected to the first structure, and the first and second structures are connected. The second structure moves along the first direction when the drive unit moves the first structure along the first direction. The linking unit has a first part located on the side of the first structure and a second part located on the side of the second structure. The first and second parts line up along the first direction. The first part can shift toward the second part in a second direction different from the first direction without moving along the first direction, and the second part can shift toward the first part in the second direction without moving along the first direction.

An injection molding machine includes: a fixed side member; and a movable side member fixed to the fixed side member, the movable side member being driven by a motor in order to perform injection molding of a molded product. The injection molding machine further includes a power feeding apparatus, one or more motors, and at least one servo amplifier. The power feeding apparatus converts a three-phase AC voltage into a DC voltage. The one or more of the motors are provided in the movable side member and drive the movable side member. The at least one servo amplifier is provided in the movable side member and drives one of the one or more of the motors by the DC voltage being supplied thereto through a DC power supply line.

A controller of an injection molding machine controls mold clamping of a fixed mold and a movable mold. The controller includes a servomotor drive control unit for limiting increase in driving current during driving of a mold clamping servomotor, and a moving state acquisition unit that acquires a detection signal of an encoder. The controller further includes an abnormality determination processing unit for determining that a clamping force sensor is abnormal when recognizing stoppage of movement of the movable mold during mold clamping, based on the acquired detection signal of the encoder.

A controller of an injection molding machine controls mold clamping of a fixed mold and a movable mold. The controller includes a servomotor drive control unit for limiting increase in driving current during driving of a mold clamping servomotor, and a moving state acquisition unit that acquires a detection signal of an encoder. The controller further includes an abnormality determination processing unit for determining that a clamping force sensor is abnormal when recognizing stoppage of movement of the movable mold during mold clamping, based on the acquired detection signal of the encoder.

A pull or push rod for a molding machine having a groove. The groove is suitable for forming a positive-locking connection with a locking nut, by which positive-locking connection forces are transmittable between the locking nut and the pull or push rod. The groove has a groove cross-section, has at least two groove flanks, and has a groove base. The at least two groove flanks, viewed in the groove cross-section, each transition with at least one transition curvature into the groove base. The groove base in the groove cross-section is at least partially formed as a curvature, and the curvature of the groove base differs from the transition curvatures of the groove flanks.

A pull or push rod or locking nut for a molding machine has an undercut, and the undercut has an undercut cross-section, a side wall, and an undercut ramp. The side wall transitions via a first transition curvature into an undercut base, and the undercut base transitions via a second transition curvature into the undercut ramp. The undercut base, viewed in the undercut cross-section, is at least partially designed as a curvature, and the curvature of the undercut base differs from the first and/or the second transition curvature.

An injection molding machine is equipped with a screw having a spline shaft formed with a spline on an outer circumferential surface, a bush having a spline hole formed with a spline on an inner circumferential surface, a linear motion motor for moving the bush in an axial direction of the screw, a rotational motion motor for rotating the bush about an axis of the screw, and a motor control unit which, in the case of fitting the spline shaft in the spline hole, controls the linear motion motor to advance the bush in a direction approaching the screw in a state that the bush and the screw are separated, and which controls the rotational motion motor to rotate the bush when the acquired output torque becomes equal to or larger than a first predetermined torque.