Making a cell for a motor-vehicle latent-heat storage unit

Details Making a cell for a motor-vehicle latent-heat storage unit Making a cell for a motor-vehicle latent-heat storage unit

1994-11-30

1995-10-24

Heinrich, Samuel M.

Metal fusion bonding

Means to apply vibratory solid-state bonding energy to work

228 151, 228 60, 228183, B23K 2010

Patent

active

054603153

ABSTRACT:
A motor-vehicle latent-heat storage unit is made by first positioning an elongated rectangular sheet-metal blank over a longitudinally extending slot formed in a die and then pressing an elongated anvil bar forming one of a pair of ultrasonic welding tools down against the blank over the slot to push the bar and the blank into the slot. This imparts to the blank a U-section and leaves longitudinally extending edge regions of the blank projecting out of the slot past the anvil bar. These edge regions are then folded transversely one after the other inward over the bar to form the blank into a tube with the edge regions overlapping each other. The other of the ultrasonic welding tools is subsequently pressed against the overlapped edge regions and therethrough against the anvil bar to ultrasonically weld together the overlapped edge regions along a full length of the tube. Finally the welded tube and the bar are moved longitudinally relative to each other to separate the tube from the bar.

REFERENCES:
patent: 3952937 (1976-04-01), Lamons et al.
patent: 4007740 (1977-02-01), Owen
patent: 4569474 (1986-02-01), Buschor et al.

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