Electric heating – Metal heating – For bonding with pressure
Patent
1996-10-11
1998-04-14
Berhane, Adolf
Electric heating
Metal heating
For bonding with pressure
B23K 1111
Patent
active
057395012
ABSTRACT:
A method and apparatus for forming a metal housing, such as a blower housing, by successively securing a wrap panel to spaced-apart end panels by a series of welds. The end panels are rotated through a series of steps by a work-holding subassembly while a pair of primary welder subassemblies reciprocate in a linear path through a plurality of weld positions and apply a plurality of spot welds to the circumference of the generally circular end panels joining the end panels to the wrap panel. A panel advancing subassembly pushes a rear end of the wrap panel to assist the forward wrapping movement of the wrap panel around the end panels A pair of secondary welder subassemblies, each having a pinch gun welder, move horizontally along another linear path and perform a plurality of welds along a linear lip of the blower housing. The primary welder subassemblies are then indexed horizontally along another linear path to perform spot welds along a linear aligned section of the blower housing. A plurality of pneumatic cylinders move the primary and the secondary welders linearly and horizontally along a plurality of guide rails. One side of the apparatus is adjustable toward or away from the other side to allow the apparatus to receive wrap panels of different sizes. The height of the secondary welder subassemblies is adjustable to align the pinch gun welders with lips of blower housings of different sizes.
REFERENCES:
patent: 5188276 (1993-02-01), Furuya et al.
patent: 5548096 (1996-08-01), Akasaka et al.
patent: 5593604 (1997-01-01), Beasley et al.
Berhane Adolf
Tru-Cut, Inc.
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