Secondary charging device for rotational moulding

Abstract

The invention discloses a secondary charging device for rotational moulding. The secondary charging device comprises a rack, a first motor and a second motor, wherein the first motor and the second motor are arranged on the rack. Two air conveying pipes are arranged on the two sides of the rack, a first output shaft is arranged between the two air conveying pipes, and the first motor communicateswith the first output shaft; a detachable mould is arranged at the bottom of the rack and is of a hollow structure; an inserting opening allowing the first output shaft to be inserted is formed in thetop end of the mould; an annular through hole located outside the inserting opening is formed in the mould and communicates with the two air conveying pipes; second output shafts of hollow structuresare arranged in the air conveying pipes and connected with the motors; rotating heads are arranged at the ends of the second output shafts and internally provided with heating cavities; first propeller blades and second propeller blades are arranged at the upper ends and the lower ends of the rotating heads and internally provided with storage cavities, wherein moulding powder can be put into thestorage cavities, and the storage cavities communicate with the heating cavities; screens for screening the moulding powder are arranged in the storage cavities correspondingly; heating plates are arranged in the heating cavities; and sticky parts communicate with the side walls of the mould, and the mould is evenly covered with liquid.

Description

technical field [0001] The invention belongs to the technical field of plastic processing, in particular to a secondary feeding device for rotational molding. Background technique [0002] Rotomolding is a hollow molding method for thermoplastics. The method is to add plastic raw materials into the mold first, then the mold is continuously rotated along two vertical axes and heated, and the plastic raw materials in the mold are gradually and evenly coated and melted and adhered to the cavity under the action of gravity and heat energy. On the entire surface, it is formed into the desired shape, and then cooled and shaped to form a product. [0003] In order to obtain multi-color multi-layer wall rotomolding products, the traditional secondary feeding technology is to position the mold in the oven when the mold is heated for a certain period of time, and when the outer layer of the rotomolding product is melted and adhered to a certain extent, the rotomolding In the seconda...

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Problems solved by technology

[0005] The present invention intends to provide a secondary feeding device for rotational molding to solve the problem of putting the plastic powder into the mold through the funnel and heating it. The heated liquid will sink to the bottom of the mold, so that the liquid covered by the mold is not uniform, and it needs The amount of plastic powder will be a lot, resulting in technical problems of material waste

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