Fabrication method for pipe clamp from flat material uses reciprocating piston with piston head having two parallel projections, and anvil with bending edge

摘要

A reciprocating piston (12) with piston head (18) is moved towards an anvil (21) with bending edge (22). The bending edge projects into the space between two parallel projections (19) located on the piston head at a distance to each other. The flat material (27) is advanced step by step between the piston head, which moves to and fro, and the anvil, in the rhythm of the reciprocating piston. Material advance may be by hand, or by a stepping motor and a toothed rack, driven by the motor and engaging on the material.