| 摘要 |
A machine installation for the manufacture of a thick-walled insulating pipe of elastic, laminatable foamed synthetic resin sheet material, includes an apparatus for effecting the lamination of a foamed synthetic resin sheet material to form a multilayer insulating pipe having a length corresponding to the sheet width of the sheet of foam material and a finishing unit. The laminating apparatus has an expandable and rotatable mandrel equipped with a pneumatic expanding means and an infinitely variable drive mechanisms for rotating the mandrel to wrap the sheet material thereon, and a pressure roller which can be urged against the mandrel. The roller is movable pneumatically by a telescopic holder, and the mandrel is associated with a pivotably mounted burner and a cutter. The unit for finishing the initially formed pipe product has a shaft rotatable in timed segments with clamping jaws attached to holding arms that are spaced from the shaft; the jaws being capable of receiving an unfinished insulating pipe product and being opened and closed pneumatically. One holding arm is associated with a band cutter for trimming the end faces of the insulating pipe product, and another holding arm is associated with a blade for slitting the insulating pipe along its length. |
