The utility model discloses a reciprocating type division special crisp device of pine cone crisp short cakes with sesame preparation, action wheel and from the both ends of driving wheel movable mounting in the frame, this action wheel passes through the conveyer belt transmission with the follow driving wheel to be connected, driving motor fixed mounting is connected in the frame and with the capstan feed, left side tray and the both ends of right tray difference fixed mounting in the frame to be located the downside of conveyer belt respectively, upside and fixed mounting that the support is located the conveyer belt are provided with vertical spout in the frame on this support, set up in this vertical spout threaded, the screw rod is put in vertical spout of support through this screw thread soon, and the pinch roller is located vertical spout of conveyer belt upside to lower extreme swing joint with the screw rod, the utility model discloses the advantage is: simple structure, labor - and time -saving opens crisp effectually, and intensity of labour when not only having reduced the operation has improved work efficiency, but also effective reduction in production cost.