Abstract: A molding device for pre-shaped plastic films has a body, a platform and a driving shaft. The body can be rotatably mounted in a pre-shape machine and has an annular side surface and a top opening. The platform is detachably mounted in the top opening of the body. The driving shaft is mounted longitudinally through the body, movably extends longitudinally relative to the body and has an end attached securely to the platform to selectively raise the platform to lift a pre-shaped plastic film from the body. Accordingly, the plastic films can easily be separated from the platform, and to manually separate the plastic film from the molding device is unnecessary to prevent the plastic films from being damaged.

Abstract: An automatic gathering pre-shape machine has a main body and a gathering device. The main body can make plastic films formed into a circular shape with an annular flange formed around a top edge of the film. The gathering device allows a pre-shaped plastic film be blown toward an outer end of the barrel to hit a block wall and drop and mount around a tip portion of corresponding shelf to be gathered. Consequently, the plastic film may easily and automatically be gathered from the main body. Therefore, the plastic films can be kept from being damaged and the pre-shaping process is accelerated.

Abstract: A molding device for pre-shaped plastic films has a body, a platform and a driving shaft. The body can be rotatably mounted in a pre-shape machine and has an annular side surface and a top opening. The platform is detachably mounted in the top opening of the body. The driving shaft is mounted longitudinally through the body, movably extends longitudinally relative to the body and has an end attached securely to the platform to selectively raise the platform to lift a pre-shaped plastic film from the body. Accordingly, the plastic films can easily be separated from the platform, and to manually separate the plastic film from the molding device is unnecessary to prevent the plastic films from being damaged.

Abstract: An automatic gathering pre-shape machine has a main body and a gathering device. The main body can make plastic films formed into a circular shape with an annular flange formed around a top edge of the film. The gathering device allows a pre-shaped plastic film be blown toward an outer end of the barrel to hit a block wall and drop and mount around a tip portion of corresponding shelf to be gathered. Consequently, the plastic film may easily and automatically be gathered from the main body. Therefore, the plastic films can be kept from being damaged and the pre-shaping process is accelerated.