A transmission device that uses the
time difference of the movement of a movable
pulley block to solve the storage of the web, characterized in that it includes a frame, a guide rail, a web laying trolley and a movable
pulley block of the rear compensation trolley, a
web storage trolley and a movable
pulley block of the front compensation trolley, a front cotton conveyor curtain, a rear cotton conveyor curtain, a web inlet curtain, a cotton outlet and a web outlet curtain. The front and rear cotton conveyor curtains respectively form a
closed loop after bypassing each roller. By using the
time difference of the reciprocating movement of the movable pulley block of the
web storage trolley and the movable pulley block of the web laying trolley, the web uniformly fed by the
carding machine is stored in the sandwich channel formed by the front and rear cotton conveyor curtains. When the web laying trolley changes direction and pauses, the continuously fed web can be stored in the clamping channel to achieve the
web storage function; and by precisely controlling the
servo motor through an electrical program, the web wrinkles and "smiling face" phenomena are eliminated, and the uniformity of the web surface output to the web outlet curtain is ensured. The advantages of this mechanism are effectively improving the web surface quality, effectively controlling the CV value of the web, enhancing the
production line efficiency, saving raw materials, and having good
economic benefits.