| 摘要 |
<p>A mold clamping device includes a clamping ram (30), whose front end is connected to a movable board (20) of an injection molding machine, and which is slidably fitted in a clamping cylinder (28). A support cylinder (29) is provided in parallel to the clamping cylinder (28). A support piston (34) is slidable in the support cylinder, and is connected to the movable board (20). A front chamber (A) and a rear chamber (B) of the clamping cylinder (separated by a piston section of the clamping ram) and a front chamber (E) of the support cylinder are connected by an oil path (36) controlled by valve means (37,38). The effective pressure receiving area of the rear chamber (B) of the clamping cylinder is substantially equal to the sum of the effective pressure receiving area of the front chamber (A) of the clamping cylinder and the front chamber (E) of the support cylinder.</p> |
