An ultrasonic welding system includes a motion control system that is coupled to and that causes controlled movement of an ultrasonic welding stack, in accordance with control inputs that are based on one or more control signals that are received from one or more sensors. The motion control system initiates a welding operation, subsequent to which an initial motion delay occurs until a predetermined condition is satisfied. Subsequently, in response to the predetermined condition being satisfied, the ultrasonic welding stack is caused to move in accordance with a weld profile. Subsequently, in response to an occurrence of a predetermined delay initiating condition, the ultrasonic welding stack is caused to stop motion and to maintain a stationary position. Subsequently, in response to an occurrence of a predetermined delay terminating condition, motion of the ultrasonic welding stack is resumed in accordance with the weld profile.

An ultrasonic welding system includes a motion control system that is coupled to and that causes controlled movement of an ultrasonic welding stack, in accordance with control inputs that are based on one or more control signals that are received from one or more sensors. The motion control system initiates a welding operation, subsequent to which an initial motion delay occurs until a predetermined condition is satisfied. Subsequently, in response to the predetermined condition being satisfied, the ultrasonic welding stack is caused to move in accordance with a weld profile. Subsequently, in response to an occurrence of a predetermined delay initiating condition, the ultrasonic welding stack is caused to stop motion and to maintain a stationary position. Subsequently, in response to an occurrence of a predetermined delay terminating condition, motion of the ultrasonic welding stack is resumed in accordance with the weld profile.

A form-fill-seal machine 100 has a pull-down belt mechanism 23, a vertical sealing mechanism 2, and a controller 29. The pull-down belt mechanism conveys a cylindrical film Fm. The vertical sealing mechanism applies pressure and ultrasonic oscillation to the cylindrical film which is conveyed by the pull-down belt mechanism, and seals the cylindrical film. The controller controls the pull-down belt mechanism, and the pressure and the amplitude of the ultrasonic oscillation applied to the cylindrical film by the vertical sealing mechanism. The controller applies pressure and ultrasonic oscillation to the cylindrical film immediately before reaching a first point in time when the cylindrical film begins to be conveyed. The controller changes at least one of the pressure and the amplitude of the ultrasonic oscillation applied to the film according to the speed of the film in a time period after reaching the first point in time.

A device for producing a packaged electrode having an electrode sandwiched between a pair of separators includes: a conveyance unit configured to sequentially overlay the electrode and the pair of separators from a front end side in a conveying direction while conveying the electrode and the pair of separators; a joining unit configured to join lateral edges of the pair of separators together, the lateral edges being positioned in a direction intersecting the conveying direction; and a controller configured to control operations of the conveyance unit and the joining unit. The controller is configured to repeatedly perform joining a plurality of times from the front end side in the conveying direction, each of the joining being performed while moving the joining unit so that a speed of the joining unit relative to a conveyance speed of a workpiece approaches zero.

A repair method is provided during which a thermoplastic patch is arranged on a thermoplastic aerospace component. An ultrasonic horn is arranged on the thermoplastic patch. The thermoplastic patch is vertically between the thermoplastic aerospace component and the ultrasonic horn. The thermoplastic patch contacts the ultrasonic horn. The thermoplastic patch is continuous ultrasonic welded to the thermoplastic aerospace component using the ultrasonic horn.