The utility model relates to the technical field of toy production, and discloses a sand filling device for toy production, which comprises a box body and a support frame, the inner side of the box body is provided with a storage bin, the bottom of the storage bin is provided with a feed opening, the inner side of the box body is provided with a movable cavity, and the inner wall of the movable cavity is provided with a sealing seat in a sliding manner; a flow guide hole is formed in the sealing seat, a discharging port is formed in the bottom of the box body and located under the discharging port, a sand filling
pipe is fixedly installed at the bottom of the box body, a rotating shaft is rotatably installed on the inner wall of the bottom of the movable cavity, and a guide seat of a
cam type structure is fixedly connected to the outer wall of the rotating shaft. When the sand filling device is used for filling sand, the sand is added into the toys through the feed opening, the flow guide hole, the
discharge opening and the sand filling
pipe, and the sand can be quantitatively filled under the
reciprocating motion of the sealing seat, so that the sand filling amount is conveniently and accurately controlled, the sand filling amount of each toy is ensured to be consistent, and the sand filling device is beneficial to improving the quality of the toys.