| 摘要 |
A machine for welding handles on plastic bags comprising a pushing mechanism for pushing individual handles with their uppermost edge forward to a pivotal gripper which grips each handle and pivots the same downwardly to position the handle between displaceable welding electrodes. An opening mechanism is disposed at the level of the electrodes and serves for holding a plastic bag therebetween to open the mouth of the bag and permit the lower edge of the handle to pass thereinto. The electrodes are then moved together to clamp the handle between the uppermost edges of the bag to effect welding of the edges to the handle. When the bag has gussets a pair of displaceable rods are disposed at opposite sides of the bag and move inwardly to tuck in the gussets in the bag when the opening mechanism has returned to its initial position and the bag mouth is closed. |
