| 摘要 |
The present invention relates to an injection device for injection molding machines, wherein the injection device comprises: an injection unit which is installed in the front of the clamping unit on an installation region, so as to be movable in the forward/backward directions and rotatable in the left and right directions, and whose end portion injects an injection resin into a cavity of the injection mold through an injection opening formed on the clamping unit; and a nozzle cylinder unit which includes a pair of nozzle cylinders, both end portions of which are, respectively, rotatably joined with one side of the clamping unit and one side of the injection unit, and which, by contracting and expanding, supplies power enabling forward/backward motion to the injection unit, wherein the stroke of one nozzle cylinder is formed to be larger than the stroke of the other nozzle cylinder. Accordingly, the present invention allows a barrel unit, which is an expendable part, to be easily repaired or replaced by adjusting the maximum stroke length of the pair of nozzle cylinders moving the injection unit forward and backward to make a barrel unit rotate without using a separate driving unit. |
