The machine consists of preform heating block and blowing block. The working operations of semi-automatic blow molding machine are as follows. The operator installs PET workpieces (preforms) onto the heating furnace spots, which, rotating on their axes, move the preforms to the heating zone providing uniform heating. Then the operator removes the preform from the furnace and puts it into the blowing machine mold, presses the button “Start”, after that the mold semi-matrixes automatically clamp, the locks rigidly close; with further automatic stretching of the preform with the rod and simultaneous pre-blowing of the bottle. Then the stage of the main blowing out feeding the compressed air under the maximum pressure starts. The mold walls are cooled down through the main channels to stabilize the shape of the blown bottle. After that the mold opens and the operator manually unloads the finished plastic bottle.
- lack of the visible seam on the bottle
- lack of the crank-and-rod mechanism
- maximum number of adjustments to control the blowing quality
- compact size
- 80 bottles per hour