| 摘要 |
A device supported on a tubular frame and having a vertical cheek supporting pulleys including drive pulley and tension pulley, a belt having a circular cross section running over these pulleys and cooperating with a lower conveyor to fold parts of a composite flap of a box blank as the blank passes therebeneath. Depending on the construction of the box blank, several cheeks with associated pulleys and belts can be positioned above the conveyor conveying the blanks therethrough. Preferably, the belt has a circular cross section and moves at a linear speed approximately the same as the conveyor of the device. |
