A machine for welding an overlapped region of two adjacent strips of material and a method of using the same. The machine includes a housing with front and rear ends, a wheel train engaged with the housing for moving the housing across the material; a nozzle on the housing having a welding head at a free end; the nozzle being positionable at least partially beneath the housing's bottom wall for welding the overlapped region; front and rear pressure rollers engaged with the housing, where the front roller is positioned forwardly of the welding head and the rear roller is positioned rearwardly of the welding head; wherein the rear pressure roller applies pressure to the overlapped region when the wheel train moves the housing in a forward direction; and the front pressure roller applies pressure to the overlapped region when the wheel train moves the housing in a reverse direction.

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.

A turf joining system i ncluding a first piece and second piece of a synthetic turf and a bridge support. The first and second pieces have side edges which are closely adjacent each other. The bridge support heat welds to the overlying first and second pieces to form an elongated first heat weld and elongated second heat weld each proximate and spaced from the respective side edge to define a water channel therebetween. A method of sealing a plurality of synthetic turf pieces together is disclosed.

A method for fastening material webs, such as roofing sheets made of plastic on a surface with fastening points (head disks including a hot-melt adhesive layer) arranged thereon using a self-propelled fastening unit (20) comprising the following steps: (A) detecting a route marking by means of a first detector (22) on the fastening unit (20) and moving the fastening unit along the route marking; (B) detecting and calculating the position of a head disk (14) by means of a second detector (24); (C) approaching and remaining at an operating position during the subsequent fastening process; (D) positioning an induction heater (30) and heating up the head disk (14) for a period of time Th; (E) removing the induction heater (30) and pressing the material web against the head disk by a cooling device (32); (F) taking off the cooling device after a predetermined time Tk has passed; (G) continuing with (A), until an end of the route marking is reached.

Welding machine for edge-side connection at the edge of overlapping material webs, wherein the materials are connectable to one another under the effect of heat and subsequent pressure, with a chassis on which at least guide rollers, a heating device and at least one pressure roller are arranged. The heating device has a cantilevered contact heating element that can be inserted laterally between the edges of the material webs, wherein the chassis is driven by an electric motor which is arranged on a longitudinal leg of the chassis. The electric motor according to the invention is formed as a brushless DC motor and the reduction gear as a planetary gear, which are united by a drum drive motor. In this case, the direct current motor is preferably a disk rotor motor. The chassis has a lateral leg which is adjustable perpendicularly to the working direction relative to the longitudinal leg.

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.

An automatic bonding apparatus and a method for thermally induced seam bonding of weldable and/or gluable flat flexible material layers with each other which are each configured as a material web, material band and/or material piece and arranged so that they overlap at least partially wherein the bonding is performed by an electrically controlled contact heating arrangement through a heating wedge welding method. A temperature and/or a power of the heating wedge which is formed by a thin folded steel sheet blank is controlled as a function of a relative velocity between the material layers and the automatic bonding apparatus. This is performed so that a thermal energy that is transferred from the heating wedge to the material layers to be glued is kept constant. For this purpose the relative velocity is detected and the power of the heating wedge is automatically adjusted when the relative velocity changes.

A butt fusion machine for joining of polyethylene pipe comprises a carriage assembly and a carriage controller disposed in the fusion machine. Programmed instructions stored in a non-volatile memory of the carriage controller control the carriage assembly for selectively operating in at least one of a manual, automatic, and semi-automatic mode of the butt fusion process. A butt fusion process, after a setup sequence includes (1) selecting a sequence of operating steps of a manual mode, an automatic mode, and a semi-automatic mode; and (2) executing the selected operating mode. The semi-automatic mode includes at least one step requiring intervention by an operator to confirm proceeding to a next step.

A machine for welding an overlapped region of two adjacent strips of material and a method of using the same. The machine includes a housing with front and rear ends, a wheel train engaged with the housing for moving the housing across the material; a nozzle on the housing having a welding head at a free end; the nozzle being positionable at least partially beneath the housing's bottom wall for welding the overlapped region; front and rear pressure rollers engaged with the housing, where the front roller is positioned forwardly of the welding head and the rear roller is positioned rearwardly of the welding head; wherein the rear pressure roller applies pressure to the overlapped region when the wheel train moves the housing in a forward direction; and the front pressure roller applies pressure to the overlapped region when the wheel train moves the housing in a reverse direction.

A method of joining polymer-lined pipe sections end-to-end comprises friction welding a polymer liner bridge fitting to parent liners of the pipe sections and welding metallic outer pipes of the pipe sections to each other before, during or after the friction welding operation. The fitting may be engaged telescopically with the pipe sections in socket formations formed by the parent liners. Friction welding is effected by relative rotational movement between the fitting and the pipe sections about a common longitudinal axis. A spinning tool is advanced longitudinally within at least one of the pipe sections, inserted into the fitting, anchored within at least one of the pipe sections, engaged with the fitting and rotated to effect the relative rotational movement. This friction-welds the fitting to the parent liners simultaneously at interfaces located at respective ends of the fitting.