Strapping tool with energy-release feature

A strapping device comprising:

• a support comprising a punch;
• a sealing assembly comprising:
• a die assembly movable relative to the support between a home position and a sealing position, the die assembly comprising a body and a die supported by the body;
• and
• a camshaft rotatable relative to the support, the camshaft comprising one or more cams;
• a motor operably connected to the camshaft to rotate the camshaft in a sealing rotational direction to carry out a sealing cycle,
• wherein the one or more cams are shaped such that during first and second phases of the sealing cycle, the cam forces the die assembly from the home position to the sealing position, and during third and fourth phases of the sealing cycle, the cam enables the die assembly to move from the sealing position to the home position, wherein the first phase comprises a strap-engage phase during which the die assembly moves from the home position toward the sealing position until the die contacts an upper portion of two overlapping strap portions positioned between the die and the punch, wherein the second phase follows the first phase and comprises a strap-cut phase during which the die assembly reaches the sealing position and causes the die and punch to cooperate to cut the overlapping strap portions, wherein the third phase follows the second phase and comprises an energy-release phase during which the die assembly begins moving from the sealing position back toward the home position, wherein the fourth phase follows the third phase and comprises a return phase during which the die assembly reaches the home position,
• wherein an angular displacement of at least one of the one or more cams during the third phase is a third cam angular displacement and a displacement of the die assembly during the third phase is a third die-assembly displacement,
• wherein an angular displacement of at least one of the one or more cams during the fourth phase is a fourth cam angular displacement and a displacement of the die assembly during the fourth phase is a fourth die-assembly displacement,
• wherein the third cam angular displacement is greater than the fourth cam angular displacement, and
• wherein the fourth die-assembly displacement is greater than the third die-assembly displacement.