Die-change device for a multi-stage forming machine
AssigneeHatebur Umformmaschinen AG
InventorsJoseph Broquet, Raymond Schoenenberger
Life of this patent
Estimating the term…
Abstract
In a multi-stage forming machine, a die-change device, for male dies in a male-die block has a mounting plate for receiving a clamping face of the male-die block on one side. Bayonet fasteners on hollow pistons in the mounting plate then engage the male dies, and a pressure medium then moves the hollow pistons to move the male dies against thrust pieces displacably in the hollow pistons and the thrust pieces against an adjusting wedge on the opposite side of the mounting plate.
Claims6
In a multi-stage forming machine for non-cutting shaping with cooperative male and female dies (13, 1 respectively) having respective longitudinal center axes, the male and female dies being in rows in respective male-die and female-die blocks, (14, 5), the forming machine having clamping means for clamping the male-die and female-die blocks (14, 5) into the forming machine, the improvement in the clamping means for clamping the male-die block (14) into the forming machine, comprising:
- a mounting plate (24) mounted on the forming machine and having one side for receiving a clamping face (29) of the male-die block (14), an opposite side, and coupling and clamping element means (35) respectively aligned with the longitudinal center axes of the male dies (13) when the clamping face (29) of the male-die block (14) is received on the one side of the mounting plate (24), each coupling and clamping element means (35) comprising:
- a hollow piston (16) guided through the mounting plate (24) for axial relative displacement away from the one side of the mounting plate (24), and having one end at the one side of the mounting plate (24);
- pressure-medium means (38) in the mounting plate (24) for so relatively displacing the hollow piston (16);
- bayonet fastening means (17) comprising a connecting sleeve (36) on the one end of the hollow piston (16) for joining the hollow piston (16) to a sleeve counterpiece (37) on one, rear end of the male die (13) at the clamping face (29) of the male-die block (14);
- an adjusting wedge (18) at the opposite side of the mounting plate (24) displaceable relative to the mounting plate (24) in the wedge direction thereof;
- and
- a thrust piece (19) relatively displaceable in the hollow piston (16) in a direction corresponding to the relative displacement of the hollow piston (16) for engaging the one, rear end of the male die (13) at one end and the adjusting wedge at the opposite end when the bayonet fastening means (17) is joined to the sleeve counterpiece (37) of the male die (13) and the pressure medium means (38) has displaced the hollow piston (16) away from the one side of the mounting plate (24).
Dependencies are inferred from the claim text.