The utility model provides a crimping
machine for a
metal tube, which comprises a bottom plate and the
metal tube, a vertical plate and a base are arranged on the bottom plate, an air cylinder is arranged in the base, a trapezoidal pushing block is arranged at the output end of the air cylinder, a self-centering clamping
assembly is arranged on the inner side of the vertical plate, and the trapezoidal pushing block is arranged on the inner side of the vertical plate. And the self-centering clamping
assembly comprises a rotating seat and a fixed seat, two first clamping wheels are rotationally connected to the fixed seat, an L-shaped connecting rod is rotationally connected to the rotating seat, a rolling wheel is rotationally connected to the end, close to the trapezoidal pushing block, of the L-shaped connecting rod, and a second clamping wheel is rotationally connected to the end, close to the
metal pipe, of the L-shaped connecting rod. According to the crimping
machine for the metal pipes, the metal pipes with different
pipe diameters can be clamped by using the self-centering clamping
assembly, and after the metal pipes are clamped, the circle centers of the metal pipes with different
pipe diameters are positioned at the same height, so that an additional centering process is not needed, the
workload is reduced, and the production efficiency is improved. And the metal pipes on the two sides can be sleeved and crimped conveniently.