Symmetrical restraining tray

The utility model provides a symmetrical restraining tray in the technical field of battery cell production devices. The symmetrical restraining tray comprises a bottom plate, the two fixing plates are vertically arranged on the left side and the right side of the top end of the bottom plate; two ends of the four guide shafts are respectively connected with one fixing plate; eight linear bearings; the two movable plates are in sliding connection with the guide shafts through the linear bearings; the four bearing seats are arranged in the middles of the two fixing plates respectively; the four self-locking nut seats are arranged in the middles of the two movable plates respectively and directly face the bearing seats respectively; the two ends of each transmission lead screw penetrate through the corresponding self-locking nut seat to be fixed to a bearing seat, and the transmission lead screws are in threaded connection with the self-locking nut seats. The electric core restraining device has the advantages t