Rounding apparatus for a can welding machine

Details Rounding apparatus for a can welding machine Rounding apparatus for a can welding machine

1988-03-24

1989-08-15

Combs, E. Michael

Metal deforming

By deflecting successively-presented portions of work during...

With feeding of discrete articles or orienting of work...

72169, 228 175, B21D 514

Patent

active

048563129

ABSTRACT:
During the rounding of sheet-metal blanks, problems have hitherto arisen in the rounding apparatus (2) because the leading edge of the rounded sheet-metal blanks struck against a stationary stop at the end (48) of a slit (24) between an inner shell (20) and an outer shell (22), so that the sheet-metal blank rebounded and did not have a defined starting position for further conveying. In order to overcome this problem, the stop is constructed in the form of a pivotally movable damping flap (50) on which there is formed a catch hook (54) which closes the slit (24) at its end (48). Compression springs (70) are disposed between the damping flap (50) and the inner shell (20). Under the impact of the sheet-metal blank, the catch hook (54) yields and urges the damping flat (50) about the pivot axis (52) pressing its front portion (50') into the slit (24) as a result of which the sheet-metal blank is temporarily clamped against the outer shell (22). Subsequently, the damping flap (50) is restored via the compression springs (70) and the rounded sheet-metal blanks can thus be taken over by the dogs (42,44) of the conveyor chains from a defined position and be conveyed further.

REFERENCES:
patent: 3959066 (1976-05-01), Miller et al.
patent: 4133197 (1979-01-01), Allen
patent: 4634038 (1987-01-01), Luigi

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