Patent ID: 8689850

Claim:
An improved ultrasonic welding device, for use at a sealing station of a horizontal or rotary form-fill-seal machine or a pre-made pouch machine, said ultrasonic welding device comprising: a housing; a parallel gripper, said parallel gripper being fixedly secured to said housing; a linear rail, a portion of said linear rail being fixedly secured to a portion of said housing; an anvil support member, said anvil support member configured to slide relative to said linear rail, said anvil support member configured to be connected to a first piston of said parallel gripper; a stack support member, said stack support member configured to slide relative to said linear rail, said stack support member configured to be connected to a second piston of said parallel gripper; an anvil secured to said anvil support member; an ultrasonic stack secured to said stack support member, said ultrasonic stack comprising a sonotrode; and wherein said first and second pistons of said parallel gripper are configured to cause translation of each of said anvil support member and said stack support member, relative to said housing, from a first respective position to a second respective position, said second respective position of said anvil support member and of said stack support member comprising a position where a surface of said anvil selectively engages a surface of said sonotrode.