Butt welding machine (2) adjusting the ends of plastic pipes and welding them to each other, which comprises a cutter (1) having a driving element (16) for moving the trimmer (13) by being driven, at least one movable claw (24, 32, 33) moving depending on a connector to hold pipes which are positioned, a motor (21) which does not have direct connection with the cutter (1) and transfers power to the cutter (1) and to the movable claw (24, 32, 33) via one connector for each, a drive gear unit (22) which provides driving energy from one point to the cutter (1) and the movable claw (24, 32, 33) which wherein the cutter (1) and the movable claw (24, 32, 33) needs to be had two different driving motions performed via two different connectors, a drive gear unit (22) providing driving energy to the movable claw (24, 32, 33) from one point.

A method, and an apparatus associated therewith, for detecting plastic tube ends clamped in a butt welding machine, the plastic tube ends being planed by means of a plane, which can be introduced between the plastic tube ends, and subsequently being heated by means of a heating mirror, which can be introduced between the plastic tube ends, and the plastic tube ends are welded together after removal of the heating mirror, the plane and/or the heating mirror being tilted in between the plastic tube ends by means of a controlled movement, wherein detection or sensing of the plastic tube ends during the controlled movement of tilting in the plane and/or the heating mirror is carried out by means of at least one sensor arranged on the plane and/or on the heating mirror.

A fusion machine which can be top-loaded on very large polyolefin pipes and pipelines has jaws which consist of an upper half jaw and lower left and right complemental jaws which pivot on the half jaw. Left and right actuators connected between the complemental jaws and the half jaw operate in one direction to cause the complemental jaws to rotate to an opened condition in which the upper half jaw can be lowered onto and lifted from the pipes to be fused and in the other direction to cause the complemental jaws to rotate to a closed condition in which the pipes to be fused are gripped so substantially around their circumferences as to resist their deformation from round during manipulation by the machine. The top-loading machine minimizes the need for heavy equipment to load and unload pipe to and from the fusion machine.

The machine (1) for sealing plastic profiled elements comprises: a base frame (6); retention means (7, 8) of at least a profiled element (P) of plastic material having a first main face (2), a second main face (3), a first lateral face (4), a second lateral face (5) and respective areas to seal (Z), the retention means (7, 8) being associated with the base frame (6) and comprising a first support element (7) movable along a first direction of sliding (A) and a second support element (8) mounted on the first support element (7) and movable relative thereto along a second direction of sliding (B); a heat-sealing element with heated plate (11), having two mutually opposite surfaces on which the areas to seal (Z) to be heated are placeable in contact; sliding means (9, 10) of the retention means (7, 8) adapted to shift the profiled elements (P) between a position of reciprocal moving away and a position of mutual approach wherein the heated areas to seal (Z) are joined together; wherein the machine (1) comprises positioning means (13, 14) associated with the support elements (7, 8) and adapted to receive a portion of one of the lateral faces (4, 5); locking means (15, 28) movably associated with the retention means (7, 8) and adapted to keep the profiled elements (P) in a locking configuration wherein one of the main faces (2, 3) is kept into contact with one of the support elements (7, 8) and one of the lateral faces (4, 5) is arranged into contact with the positioning means (13, 14), and wherein the locking means (15, 28) prevent the profiled elements (P) from rotating around the longitudinal axis of the profiled elements themselves.

A fusion bead testing device is provided for testing the strength of a fusion bead removed from a pipe joint. The testing device comprises a first pressing means for exerting a force against the fusion bead. If the fusion bead splits as a result of the applied force then the fusion bead fails a quality control test and the fusion bead and consequently the pipe joint from which the bead was removed are deemed too weak. The fusion bead testing apparatus comprises an automatic split detection device for detecting a split in the bead.

A facer facing the ends of polyolefin pipes for butt fusion is modular in the sense that it employs three types of modules, a drive unit, two blade holders and a motor assembly, that are separable from one another and each independently light enough to be hand-lifted along walls and up to ceilings. The drive unit module is adjustable to accommodate different guide rail spacings. The blade holder modules are interchangeable to accommodate different diameters of pipe. The motor assembly module has multispeed capability to accommodate the total area of material to be faced. Each module can be exchanged or modified without use of tools to change the geometry of the assembled facer to accommodate different fusion machines and/or diameters of pipe within working spaces dictated by the diameter of the pipe and not by a fixed geometry of a facer.

The machine (1) comprises: retaining means (3, 4) of a first profiled element (5) and of a second profiled element (6) made of plastic material, which extend along respective longitudinal directions and are each provided with at least one area to be welded (7) substantially inclined by an angle comprised between 10? and 80? with respect to the respective longitudinal direction and at least one main face (5a, 6a) square-shaped, wherein the main face (5a) of the first profiled element (5) is projected with respect to the respective area to be welded (7) and the main face (6a) of the second profiled element (6) is recessed with respect to the relevant area to be welded (7); removal means (16) comprising a pair of milling tools (17) movable in rotation around a relevant axis of rotation (R); suction means (20) adapted to remove the residues of plastic material generated during the removal of the plastic material;
wherein the suction means (20) comprise at least one suction duct (21) arranged around a respective milling tool (17), which comprises a substantially flat abutment portion (24) adapted to internally abut against the main face (5a) of the first profiled element (5) during the removal of the plastic material.

A structure for delivering a pipe fusion machine may include a base that supports a container. A hose station may be provided in the container. And a swing arm may be mounted on the base for pivot action between a stowed position and an extended position. The delivery structure may be mounted on a motorized vehicle having an on-board hydraulic fluid system. The distal end of the swing arm may support pipe fusion jaws and a pipe facer. The pipe fusion jaws and the pipe facer may be connected to the hose station via hydraulic lines, and the hose station may be connected to the vehicle's on-board hydraulic system. In this way, the vehicle's on-board hydraulic system can power the pipe fusion jaws and the pipe facer.

The invention relates to a butt welding machine adjusting the ends of plastic pipes and welding them to each other, which comprises a cutter having a driving element for moving the trimmer by being driven, at least one movable claw, moving depending on a connector to hold pipes which are positioned, a motor which does not have direct connection with the cutter and transfers power to the cutter and to the movable claw via one connector for each, a cutter which needs to be had two different driving motion performed via two different connectors, a drive gear unit providing driving energy to the movable claw from one point.

The machine (1) for sealing plastic profiled elements comprises: a base frame (6); a pair of retention members (7, 8), adapted to retain respective plastic profiled elements (P) having respective areas to seal (Z) with a first main edge (2a), a second main edge (3a), a first lateral edge (4a) and a second lateral edge (5a); a heat-sealing element with heated plate (11); sliding means (9, 10) of the retention members (7, 8); removing means (13, 14) adapted to remove material from the areas to seal (Z) at least at the first lateral edges (4a); lateral containment means (23, 24), which are adapted to abut on the areas to seal (Z) at the first lateral edges (4a) for the containment of a lateral sealing bead (S) and which comprise at least a V-shaped element (23) having two sides (25) arranged in a V pattern which are adapted to abut on at least a portion of respective first lateral faces (4) of the profiled elements (P).