A liner heat sealing device used to fuse two or more sheets of plastic or vinyl together along a straight line using a heating element and a temperature control unit to control the temperature of the device, the device having three separate temperature zones along a linear axis, including a front preheating segment, a central fusing segment and a rear cooling section, each section provided on the common linear sealing device.

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.

An integrated system for fusing and sealing of a plurality of tubes is disclosed. The integrated system includes one or more fusing units configured to cut one or more tubes of multiple tubes simultaneously, and fusing the one or more tubes together along their respective cut ends; one or more sealing units configured to seal an end of the tube of the multiple tubes; and a control unit for controlling functions of the one or more fusing units and the one or more sealing units.

An apparatus having a first treatment module and a second treatment module, at least one of which includes a welding device for treating one or more workpieces. The apparatus has a controller arranged to: receive a real-time amplitude signal of ultrasonic vibration of at least one of the first treatment module and the second treatment module during a treatment cycle; segment the amplitude signal into a plurality of amplitude segments for the treatment cycle; monitor an amplitude value of each of the plurality of amplitude segments during the treatment cycle; operate a plurality of closed-loop control algorithms to determine a plurality of amplitude adjustment values, each of the plurality of amplitude adjustment values corresponding to a respective one of the plurality of amplitude segments; and apply each amplitude adjustment value to the corresponding respective one of the plurality of amplitude segments during the subsequent treatment cycle in real-time.

An apparatus having a first treatment module and a second treatment module, at least one of which includes a welding device for treating one or more workpieces. The apparatus has a controller arranged to: receive a real-time amplitude signal of ultrasonic vibration of at least one of the first treatment module and the second treatment module during a treatment cycle; segment the amplitude signal into a plurality of amplitude segments for the treatment cycle; monitor an amplitude value of each of the plurality of amplitude segments during the treatment cycle; operate a plurality of closed-loop control algorithms to determine a plurality of amplitude adjustment values, each of the plurality of amplitude adjustment values corresponding to a respective one of the plurality of amplitude segments; and apply each amplitude adjustment value to the corresponding respective one of the plurality of amplitude segments during the subsequent treatment cycle in real-time.

An apparatus having a first treatment module and a second treatment module positionable in proximity to the first treatment module, wherein at least one of the first treatment module and the second treatment module includes a welding device for treating one or more workpieces. The apparatus has a controller arranged to: receive a real-time amplitude signal of ultrasonic vibration of at least one of the first treatment module and the second treatment module during a treatment cycle; segment the amplitude signal into a plurality of amplitude segments for the treatment cycle; monitor an amplitude value of each of the plurality of amplitude segments during the treatment cycle; operate a plurality of closed-loop control algorithms to determine a plurality of amplitude adjustment values, each of the plurality of amplitude adjustment values corresponding to a respective one of the plurality of amplitude segments; and apply each amplitude adjustment value to the corresponding respective one of the plurality of amplitude segments during the subsequent treatment cycle in real-time. The treatment cycle comprises treating a single workpiece in a plurality of workpieces, and the treating including a bonding operation, a welding operation, a soldering operation, a fusing operation, or a cutting operation.