ROLL FORM APPARATUS, METHOD TO MANUFACTURE CRUSH TUBES
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United States of America Patent
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Issued Date -
Dec 25, 2014
app pub date -
Apr 22, 2014
filing date -
Jun 24, 2013
priority date (Note) -
Abandoned
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Abstract
An apparatus comprises an uncoiling device for unrolling sheet material, an embossing device for embossing a series of crush initiating embossments into the sheet, a slitter to remove deformed edges of the sheet to facilitate welding, and a roll former with rolls configured to deform the sheet into a continuous tubular beam with walls each including some of the embossments, with the rolls being configured to clear the embossments but accurately form corners joining the walls. The apparatus further includes a welder welding abutting edges of the sheet together to fix the tubular beam, with the abutting edges being located inboard of an adjacent one of the corners but outboard of an outboard edge of adjacent ones of the embossments, and a cutoff device for cutting the continuous tubular beam into beam segments. A related method is also disclosed.
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