http://www.allpinouts.org/index.php/RS-449_(EIA-449)_Serial_37_pinLooks like 37-pin serial (RS-449) - not SCSI
And I looked at serial cards, all the ones with your DB37 port are multiple head cards (like 4 serial ports or 8 ports). So I would say you could try a card like this:
http://www.newegg.com/Product/Product.aspx?Item=N82E16815124041But I definitely can't say for sure that will work. More than likely that card came with the engraver, and there's a good possibility that it's proprietary. You could try contacting the engraver manufacturer...