Automobile roof foam attaching clamp

The utility model discloses an automobile roof foam attaching clamp which is characterized in that a first motor drives a positive and negative screw rod to rotate, so that two moving blocks at the two ends of the positive and negative screw rod move together; the air cylinder is started, so that the pressing plate moves downwards and is pressed on the foam pasted on the automobile roof; through the arrangement of a U-shaped rod, a vertical rod and a lantern ring, the U-shaped rod is sleeved with the lantern ring all the time in the moving process of the fixing block, and therefore the moving stability of the fixing block is improved; through the arrangement of a placing groove, a spring and an I-shaped plate, when a pressing plate presses foam, the spring is compressed to play a buffering role, and the situation that the foam and an automobile roof are damaged due to the fact that the downward pressing force is too large is prevented; and through the arrangement of the clamp assembly, the side wall of the au