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 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 curved, and the curvature of the undercut base differs from the first transition curvature and/or the second transition curvature.

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 curved, and the curvature of the undercut base differs from the first transition curvature and/or the second transition curvature.

The present disclosure provides a clamping assembly in operative connection with a mold of an injection-molding apparatus. The clamping assembly includes a fixed plate, a rear plate, a plurality of tie bars, a movable plate, a driving module, and a temperature adjuster. The rear plate is spaced apart from the fixed plate. The tie bars are interlinked with the fixed plate and the rear plate and provided with a plurality of channels. The movable plate, between the fixed plate and the rear plate, is capable of moving with respect to the fixed plate along the tie bars. The driving module interlinks the rear plate and the movable plate. The temperature adjuster is employed to supply a fluid into the channels to remove heat from the tie bars, thereby preventing non-uniform thermal expansion of the tie bars, and hence preventing the structural wear and flash issues.

The present disclosure provides a clamping assembly in operative connection with a mold of an injection-molding apparatus. The clamping assembly includes a fixed plate, a rear plate, a plurality of tie bars, a movable plate, a driving module, and a temperature adjuster. The rear plate is spaced apart from the fixed plate. The tie bars are interlinked with the fixed plate and the rear plate and provided with a plurality of channels. The movable plate, between the fixed plate and the rear plate, is capable of moving with respect to the fixed plate along the tie bars. The driving module interlinks the rear plate and the movable plate. The temperature adjuster is employed to supply a fluid into the channels to remove heat from the tie bars, thereby preventing non-uniform thermal expansion of the tie bars, and hence preventing the structural wear and flash issues.

A die clamping device for an injection molding machine comprises: a ball screw that is rotated by a motor; a crosshead that is disposed between a rear platen and a movable platen and moves along the axial direction of a tie-bar via the rotation of the ball screw; a toggle link that moves along the axial direction of the movable platen in accordance with the movement of the crosshead; and a crosshead pressing mechanism that presses the crosshead such that the crosshead moves toward the rear platen side.

A die clamping device for an injection molding machine comprises: a ball screw that is rotated by a motor; a crosshead that is disposed between a rear platen and a movable platen and moves along the axial direction of a tie-bar via the rotation of the ball screw; a toggle link that moves along the axial direction of the movable platen in accordance with the movement of the crosshead; and a crosshead pressing mechanism that presses the crosshead such that the crosshead moves toward the rear platen side.

This mold-clamping device, which is for an injection molding machine in which resin in injected into a cavity of an open mold, after which the mold is closed to carry out molding, is provided with a movable platen capable of moving along an axial direction of tie bars, and a parallelism maintenance mechanism for maintaining parallelism between a fixed mold and a movable mold when the resin is injected. The parallelism maintenance mechanism includes a contraction member which has a spring member and is for generating biasing force causing the fixed mold and the movable mold to separate from each other, and a length adjustment member for adjusting the biasing force generated by the contraction member.

A mold clamping device includes at least two mold platens and a plurality of rod-shaped members connecting two of the mold platens. An offset load detector is provided for at least one of the rod-shaped members at a connection portion between the at least one of the rod-shaped members and at least one of the mold platens. The offset load detector is configured to detect loads at two or more different detection positions, respectively, in a circumferential direction of the at least one of the rod-shaped members.