The utility model discloses a
necking machine buffering positioning baffle device which comprises a second positioning baffle, four second guide rods are arranged on the second positioning baffle in a penetrating mode, the front ends of the four second guide rods penetrate through the four corners of the second positioning baffle in a sliding mode respectively, and the other ends of the four second guide rods are fixed to a buffering base. A limiting piece for preventing the second positioning baffle from being separated from the second guide rod is fixed to the end, away from the buffer base, of the second guide rod. The end of a
piston rod of the second buffering cylinder is fixed to the middle of the side, close to the buffering base, of the second positioning baffle. The second guide rod is connected with an adjusting oil way and a
backflow oil way, throttling valves are installed in the middle of the adjusting oil way and the middle of the
backflow oil way, and one end of the adjusting oil way and one end of the
backflow oil way are adjusted and controlled through a
reversing valve, so that the rigidity of the buffering and positioning baffle device of the
necking machine is greatly improved, and the structure is greatly simplified. And after the buffering force, the retreating speed and the distance are controlled by the
throttle valve, the buffering effect is obvious, so that the oil injection leakage of the hydraulic
system is radically eliminated, and the maintenance cost of equipment is reduced.