Controllable demoulding push rod device applied to stamping automatic production line

The invention relates to a controllable demoulding push rod device applied to a stamping automatic production line, the controllable demoulding push rod device comprises a push rod body, a needle-type air cylinder, a thimble, a strong magnet and a spring, wherein the thimble is mutually connected with the needle-type air cylinder, and the thimble and the needle-type air cylinder are installed inside the push rod body together, the strong magnet is distributed at a tail end of the push rod body, the push rod body is installed inside a punching head of a mould through the spring. The controllable demoulding push rod device is simple in structure and convenient to install and use, and mainly solves problems that a caster support accurately controls demoulding time of a workpiece and a position after demoulding according to a requirement of the automatic production line after the caster support is stretched and formed, demoulding is controllable after a gripping device is in place so as to assure realization of a