Core rod preassembling device

The utility model provides a core rod preassembling device which comprises an installation table, an installation groove is formed in the surface of the installation table, a core rod body can be inserted into the installation groove, installation bases are fixed to the positions, located on the two sides of an inlet of the installation groove, of the installation table, and clamping mechanisms for positioning the core rod body are arranged in the installation bases. The distance between the outer wall of the core rod body and the inner wall of the mounting groove is accurately read through the exposed length of the limiting frame and the toothed plate, it is ensured that the core rod body is located at the circle center position of the mounting groove through comparison of numerical values on the two sides, and the core rod body is pushed to be inserted into the mounting groove in the vertical direction under the action of the pressing mechanism and the conveying wheel. Compared with the prior art, the insta