Mold shell for tire mold

The utility model relates to the field of tire molds. The mold shell for the tire mold comprises a mold shell body, the mold comprises a lower side plate, movable seats, a traction block, an upper side plate and a mold core, the multiple movable seats distributed in a radial mode slide on the lower side plate in the horizontal direction, the movable seats and the traction block are connected in asliding mode through inclined sliding rails, and a vertically-arranged connecting arm is fixed to the bottom of the traction block; according to the utility model, the connecting arms for synchronously driving the plurality of traction blocks to move and the rigid connecting pieces connected to the connecting arms are arranged; in this way, synchronization can be achieved by driving the rigid connecting piece through one driving device, the traction blocks are driven to move at the same time, inaccurate die assembly caused by time and action errors of the driving device is avoided, and therefore the operation process