Mechanism for machining glasses tube

The invention discloses a mechanism for machining a glasses tube. The mechanism comprises a workbench, the workbench is provided with a forming core die, and a first pull rod and a second pull rod are arranged on the forming core die, wherein the first pull rod and the second pull rod can extend into the machined tube to expand the tube; the workbench is further provided with a first forming clamping die, a second forming clamping die, clamping die driving mechanisms and a transmission mechanism, wherein the first forming clamping die and the second forming clamping die can move on the workbench relatively, and the clamping die driving mechanisms drive the first forming clamping die and the second forming clamping die to move relatively; and the inner side of the first forming clamping die and the inner side of the second forming clamping die are each provided with glasses forming hole halves. The mechanism is convenient to machine, short in machining time, simple in structure and low in cost; and the glasses