Die clamping device for injection molding machine

摘要

Breakage of the actuator moving the movable platen in the clamping device of an injection molder is prevented. The clamping device includes a movable platen shifting device increasing and decreasing a horizontal distance between the movable platen (3) and the fixed platen (2). It includes an actuator (41), a clevis pin connecting the actuator (41) and the movable platen (3), a clevis pin holding part holding a central axis of the clevis pin perpendicular to a moving direction of the movable platen (3), and a clevis pin connecting part that connects the actuator (41) and the clevis pin. The clevis pin connecting part is a supporting structure rotating with the clevis pin. The clevis pin connecting part is supported by the movable platen (3). The clevis pin, the clevis pin connecting part, and the front end of the actuator are aligned in a straight line.

主权项

1. A clamping device of an injection moulder comprising:
a fixed platen that is fixed to a base; a movable platen that moves along at least two guiding sliding parts fixed to the base in parallel with the base, the movable platen facing the fixed platen during the movement; and a movable platen shifting device that increases and decrease a horizontal distance between the movable platen and the fixed platen, wherein the movable platen shifting device comprises:
an actuator that moves the movable platen;a clevis pin that connects an end of an operation rod of the actuator and the movable platen;a clevis pin holding part that holds a central axis of the clevis pin perpendicular to a moving direction of the movable platen and fixes the clevis pin to the movable platen; anda clevis pin connecting part that connects the actuator and the clevis pin, wherein:the clevis pin connecting part is a supporting structure configured to rotate with the clevis pin;the clevis pin connecting part is supported by the movable platen through the clevis pin holding part;the clevis pin, the clevis pin connecting part, and the front end of the actuator are aligned in a straight line;the clevis pin has a spherical surface on an outer circumference side surface thereof; andthe clevis pin connecting part has a spherical surface on an inner circumference surface thereof facing the clevis pin, the spherical surface of the clevis pin connecting part fitting to the spherical surface of the clevis pin slidably.