Seamer with improved back-up assembly

Details Seamer with improved back-up assembly Seamer with improved back-up assembly

1994-02-03

1995-09-19

Rowan, Kurt

Metal fusion bonding

Seam backup means

219160, 269 22, 269 43, B23K 3704

Patent

active

054509963

ABSTRACT:
This seamer (10) with back-up assembly (50) includes a first table (30) supporting one of the workpieces W1, a second table (32) supporting the other of the workpieces W2, fingers (40, 42) clamping the workpieces to the table, and an improved back-up assembly (50) disposed between the first and second table (30, 32). The back-up assembly (50) includes an elongate back-up bar (52), a holder (54) carrying the back-up bar (52), a support (70) disposed in spaced relation from the holder (54), inflatable hoses (80, 82) operatively disposed between the holder (54) and the support (70), and a control system (88) inflating the hoses to adjust the elevation of the back-up bar (52) relative to the workpieces W1 and W2. The assembly (50) is slidingly removable as a unit to facilitate removal of the back-up bar (52).

REFERENCES:
patent: 2043020 (1936-06-01), Thiemer
patent: 2522659 (1950-09-01), Anderson
patent: 2941491 (1960-06-01), Knost
patent: 3938797 (1976-02-01), Frederick

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