Convenient core iron clamping device

The utility model discloses a convenient core iron clamping device, relates to casting equipment technical field, including core box, also including steel needle and spring, the top inner wall of core box is provided with the placing groove, the placing groove is used for placing core sand, the bottom of two groups of steel needle both is fixedly equipped with the nut, the spring is fixed in the placing groove. Clamping grooves are formed in the opposite sides of the two steel needles in the same group, and the clamping grooves are used for clamping and fixing the core iron. The steel needles can be fixed in the core box by rotating the nuts, the core iron can be arranged and limited through the two steel needles at the two ends, the position of the core iron can be limited through the clamping grooves, the core iron can be located in the middle of core sand, the core iron can be prevented from being exposed out of the core sand in the casting process, and the casting quality is improved. And therefore, the c