| 摘要 |
A mold clamping device is disclosed. The device includes a clamping ram, whose front end is connected to a movable board of an injection molding machine, etc., is slidably fitted in a clamping cylinder, and a support cylinder is provided in parallel to the clamping cylinder A support piston is slidably positioned in the support cylinder, and the front end of the rod of the support piston is connected to the movable board of the injection molding machine. A front chamber and a rear chamber of the clamping cylinder divided by the piston section of the clamping ram and a front chamber of the support cylinder are connected by an oil path. There is provided a means for opening or closing the connection between the rear chamber of the clamping cylinder and the front chamber of the clamping cylinder and the front chamber of the support cylinder. The effective pressure receiving area of the rear chamber of the clamping cylinder is substantially equal to the sum of the effective pressure receiving area of the front chamber of the clamping cylinder and the front chamber of the support cylinder. |
