Electric heating – Metal heating – Of cylinders
Patent
1990-08-22
1992-06-16
Lateef, Marvin M.
Electric heating
Metal heating
Of cylinders
219 81, 219 84, B23K 116
Patent
active
051226294
ABSTRACT:
A compact resistance seam welding machine wherein the upper electrode roller (14) is provided on a pivotally mounted arm (12) instead of on a pendulum roller head. The lower electrode roller (16), which is disposed below the upper electrode roller (14), is provided on a rigid lower arm (8) as usual. The pivotal mounting (10) of the arm (12) includes a stack of copper foils (102) on the side adjacent to the lower arm (8) and of a steel strip (101) on the side remote from the lower arm (8). The steel strip (101) and the copper foils (102) are each clamped, on the one side to the machine frame (4) and on the other side to the opposite end of the arm (12). The arm (12) is therefore pivotally mounted on the principle of a parallelogram linkage, while the pivotal mounting (10) serves for the transmission of welding current to the upper electrode roller (14) at the same time. The pivotal mounting ( 10) only permits the upper electrode roller (14) a vertical movement up and down.
REFERENCES:
patent: 4051343 (1977-09-01), Opprecht
patent: 4803323 (1988-02-01), Frei et al.
Elpatronic AG
Lateef Marvin M.
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