The invention relates to the technical field of
welding tools, in particular to a supporting and fixing device for
welding of
pipe fittings. The supporting and fixing comprises a bottom plate, two sets of fixed frames are arranged at the top of the bottom plate, top frames are fixedly connected to the tops of the fixed frames, rotating rods are arranged on left and right sides in the fixed frames,and bottoms of the rotating rods are rotationally connected with bottoms of inner sides of the rotating rods; the top of each rotating rod penetrates through the top of the
fixed frame, the bottom ofeach rotating rod is connected with a worm wheel, the front side of the worm wheel is engaged with a worm, a left end of the worm is rotationally connected with a left side wall of the top frame, anda right end of the worm penetrates through a right side wall of the top frame, and a right side of the worm is connected with a
handle; and external threads are oppositely arranged on the upper end and the lower end of each rotating rod. The supporting and fixing device disclosed by the invention is novel in design and convenient to use, not only can the rotation of the
pipe fitting be realized,but also the alignment at the interface of the
pipe fitting is convenient, and the
welding of the
pipe fitting is facilitated; in addition, the device is also convenient to move and fix, stronger in applicability and suitable for popularization and use.