| 摘要 |
Installation for centrifugally casting pipes from plastic containing filler, glass fibres, and, optionally, other additives has a rotary stand (1) with a horizontal axis on which 6 - 8 motor-driven centrifugal moulds (31-38) are rotatable mounted, uniformly distributed at the same axial distance from the axis (11k) of the stand, each independently driven by its own drive motor (40). A drive (25-28) and fixing device (11a-11h,19,20) enable the stand to be rotated in steps so that each mould, in turn, reaches the position previously occupied by the preceding mould. Heating elements enable each mould to be heated in at least one of its position and an extraction device extracts gases liberated from the individual moulds during curing. A feed device (2), movable only parallel to the axis during operation, introduces the pipe composition into one mould, or two moulds simultaneously, and a demoulding device draws a finished pipe out of each mould at a fixed point (G). A control device (29) controls the stepped rotation of the rotary stand, the rotation of each mould at a speed dependent on the position in which it is located, the movement of the feed device relative to the rotary stand, the feed rate and total amount of composition introduced, and the operation of the demoulding device. |
