First-in-first-out cache conveying method and device

The invention discloses a first-in first-out cache conveying method and device, and relates to the technical field of tobacco machinery. Comprising an upstream conveying device, a storage, a downstream conveying device and an electric control system. An outlet of the upstream conveying device is communicated with an inlet of the storage device; and the outlet of the storage device is communicated with the inlet of the downstream conveying device. The first-in first-out buffer conveying device can be flexibly matched with the production speed of the cigarette making machine and the production speed of the packaging machine; the method for adjusting the height of the conveyed materials solves the problems that in the conveying process of the rod-shaped materials in the storage device, due to the fact that the height difference exists between a conveying belt of the storage device and a conveying steel belt mechanical structure, the rod-shaped materials possibly roll excessively, and the conveyed materials are d