| 主权项 |
1. A machine for blow-molding articles from a strip of material, the machine comprising:
a mount having mounted thereon in succession along a rectilinear path of the strip through the machine:
a guide pipe coaxial about a longitudinal direction of the strip;a shaper arranged around the guide pipe to bring the longitudinal edges of the strip close to each other in order to shape the strip into a tube around the guide pipe;a welder member for welding together adjacent edges of the strip shaped as a tube;at least one heater member for heating the strip; anda mold having two portions movable relative to each other; wherein the machine includes a device for driving the strip along its longitudinal direction and a blower member connected to an air manifold member for deforming the tube inside the mold and for pressing the tube against a cavity of the mold; wherein the blower member, the welder member, the heater member, the mold, and the drive device are connected to a control unit for controlling them; and wherein the drive device comprises at least one member for longitudinally holding the strip and two frames mounted on the mount and each connected to a movement actuator so as to be movable along the path of the strip, each being movable between an upstream position and a downstream position relative to a movement direction of the strip through the machine, and in that the pipe, the holder member, and the mold are respectively mounted on one item selected from the mount and the frames, and the control unit is connected to the movement actuators to control them in such a manner as to generate a sequence of moving the guide pipe and the mold relative to the holder member and of opening and closing the mold in such a manner as to cause the strip to advance along the rectilinear path. |
