Ultrasonic press with automatic speed changes in advancing movement of welding stack
AssigneeDukane IAS, LLC
InventorsLeo Klinstein, Paul Golko, William E. Jurkowski
Life of this patent
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Abstract
An ultrasonic welding system includes a movable ultrasonic welding stack for applying vibrational energy to a workpiece. A motion control system controls the motion of the ultrasonic welding stack and one or more sensors sense a control variable and output a corresponding control signal. A controller provides control inputs, based on the control signal, to the motion control system and causes, following initiation of a welding operation, an automatic change of speed of motion of the ultrasonic welding stack. The automatic change of the speed is a function of at least one control variable until the control variable reaches a predetermined value.
Claims27
An ultrasonic welding system comprising:
- a movable ultrasonic welding stack to apply vibrational energy, in response to control inputs, to at least one workpiece;
- a motion control system including an electrically powered actuator or motor that directly control the speed of advancing movement of the ultrasonic welding stack relative to said workpiece, based on at least one control variable;
- and
- a controller providing control inputs to the motion control system and causing, following initiation of a welding operation, an automatic change of speed of said advancing movement of the ultrasonic welding stack, when the at least one control variable reaches a predetermined value.
A method for a welding operation, the method comprising:
- initiating a welding operation by moving, in response to control inputs, an ultrasonic welding stack to apply vibrational energy to a workpiece;
- causing, via a controllable motion control system, controlled advancing movement of the ultrasonic welding stack toward said workpiece based on at least one control variable, the controllable motion control system including an electrically powered actuator or motor that directly controls the advancing movement of the ultrasonic welding stack;
- and
- in response to control inputs received from a controller and based on the control variable, causing, following initiation of a welding operation, an automatic change of speed of the controlled advancing movement of the ultrasonic welding stack when the at least one control variable reaches a predetermined value.
Dependencies are inferred from the claim text.