Oil core replacing device

An oil core replacing device comprising a base, said base pivotally provided thereon with a driving gear, said driving gear fixed with a connecting member at the location of an axis, said base further pivotally disposed thereon with three driven gears, said driven gears spaced apart equiangularly and annularly positioned at a circumferential side of said driving gear and meshed with said driving gear, said driven gears eccentrically fixed thereon with three clamping units;

• and characterized by,
• said clamping unit comprising a rod body, said rod body having one end secured with said driven gear and forming a fixed end, said rod body having another end forming a free end, said rod body provided with a position-limiting portion at a location of said free end, said rod body having an outer circumferential side circularly fitted with a tubular body, said tubular body having an upper inner circumferential wall formed with a stop portion, said stop portion positioned between said driven gear and said position-limiting portion, said rod body having an outer circumferential wall set therein with an elastic resisting piece, said elastic resisting piece elastically resisting an inner circumferential wall of said tubular body;
• said tubular body able to slide axially along said rod body to form a contracted-upward state and an extended state, the outer circumferential .wall annularly provided around said rod body forming said contracted-upward state when said tubular body slides in a direction close to said driven gear, said outer circumferential wall around said rod body forming said extended state when said tubular body slides in a direction far away from said driven gear and extends outward to the outermost side of said free end by said stop portion and position-limiting portion being mutually restricted and stopped in position.