DEVICE FOR WELDING OF THE PLASTIC PIPES Russian patent published in 2008 - IPC B29C65/02 B29C65/72 

FIELD: construction industry; natural gas industry; oil-producing industry; other industries; devices for welding of the plastic pipes.

SUBSTANCE: the invention is pertaining to the field of construction and may be used at laying-out, manufacture and repairs of the pipelines, in particular, in the technological equipment for enhancement of the functional capabilities of the devices which are used for the butt-seam welding of the plastic pipes. The device contains the cradle, the mobile and motionless carriages, on which the clamps for holding the pipes are tightened. The movable carriage contains two manual self-propelled drives. At that only one drive actuates the loading spring and is equipped with the screw, which ensures the spring compression. The other drive actuates only the lever and provides the idle motion of the movable carriage. The bracket, on which the shaft of the lever turning is fixed, is radially welded to the nut of the screw drive. On the opposite side from the first bracket there is the second bracket radially welded to the same screw drive nut. The indicated bracket has two radial grooves for provision of the possibility to fix the lever in two positions. The device also contains the feed spindle, on which the bushing is freely set. The bushing is moved by the lever through the thrust blocks and ensures the capability of the carriage passing through the loading spring. The invention ensures extension of the functional capabilities of the device, reduction of duration of the technological pause from the moment of the heater removal up to the pipes jointing.

EFFECT: the invention ensures extension of the functional capabilities of the device, reduction of duration of the technological pause.

2 cl, 3 dwg