Outer back head cross -shaped supporting welding position frock

The utility model discloses an outer back head cross -shaped supporting welding position frock relates to gas cylinder production frock field, including criss -cross bed plate and support column, fixed setting of one end of support column be in criss -cross central point puts, with the bed plate perpendicular, the bed plate include four extension boards of horizontal distribution, four extension boards all be provided with the arc recess, the arc recess distribute with criss -cross center be on the same circumference in the centre of a circle. The utility model discloses a recess on the base comes to pinpoint the cross -shaped supporting subassembly, fixed action through the frock for can not lead to warping during the welding of cross -shaped supporting subassembly, still guarantee the axiality of outer back head and cross -shaped supporting subassembly simultaneously, improve the disposable qualification rate of product, cross -shaped supporting welding position frock light in weight, easy and simple to han