| 摘要 |
The invention concerns a device and a method for continuous pressing of a plastically deformable blank into a three-dimensional section with a predetermined cross-sectional area, comprising a substantially cylindrical, fixed die, an opening formed in the die, through which the plastic blank is intended to be pressed, and at least one rotary die arranged adjacent to the opening, the rotary die having one or more recesses in its peripheral surface for forming the blank, during the rotation of the die, into a three-dimensional section with transverse sectional parts. According to the invention, the rotary die is arranged immediately downstream of the opening, whereby the blank is reducible, when passing through the opening, substantially down to the predetermined cross-sectional area, and formable, when passing the rotary die, thereby determining the final shape of the three-dimensional section. furthermore, the device is compatible with conventional extrusion machines in order to allow rapid switching of tools with no need for expensive production stop-pages. |
