Patent ID: 6540494
Filing Date: 2003-04-01
Classification: B29C,Y10S,Y10T

Abstract:
A linkage type mold clamping device, comprising:a stationary plate on which a stationary side mold is mountable; a movable plate on which a movable side mold is mountable in a position opposite the stationary side mold; a mold guiding mechanism by which said movable plate can slide; a lathe; and a movable plate driving mechanism for driving the movable plate, using electromagnetic force, on said mold guiding mechanism, said movable plate driving mechanism comprising: a slider guiding mechanism fixedly mounted on said lathe; a driving slider slidably arranged on the slider guiding mechanism for sliding on the slider guiding mechanism; a magnetic field generating system comprising a magnetic field generating device and a magnetic base, for generating first and second magnetic fields, the magnetic field generating device being attached on the driving slider and the magnetic base being attached on the lathe; a magnetic force controller electrically connected to the magnetic field generating system, for controlling a direction and a magnitude of the magnetic fields; and at least one linkage, one end of the linkage being rotatably mounted on a back side of the movable plate and another end of the linkage being rotatably mounted on the driving slider; wherein the first magnetic field causes an attracting force to be generated between the magnetic field generating device and the magnetic base, and the second magnetic field causes a repulsive force to be generated between the magnetic field generating device and the magnetic base, thereby causing the driving slider to slide and drive the linkage to move the movable plate toward and away from the stationary plate, with a limit position of the linkage being in a dead center position of said movable plate driving mechanism, so that the mold clamping device generates a self-clamping effect to complete a mold-locking movement.