Patent ID: 8096339
Filing Date: 2012-01-17
Classification: B29C

Abstract:
1. An ultrasonic welding tool with fluid drive, wherein the ultrasonic welding tool ( 2 ) is connected by way of a piston rod ( 3 ) to a working piston ( 5 ) which is guided in a housing ( 4 ) of the drive, wherein the working piston ( 5 ) sub-divides the drive housing ( 4 ) into a primary chamber ( 6 ) and a secondary chamber ( 7 ), wherein each of the chambers is able to communicate by way of a valve ( 16 ) with a fluidized pressure source, wherein at least one sensor ( 18 , 19 ) is provided for detecting a physical property of the fluid drive which sensor emits an actual signal which is in relationship with the physical property detected and which via a control circuit controls the two valves in such a way that the physical property detected follows a reference value profile.