Device and process for forming solid reinforcing rib from rotational molding container at one step

Abstract

The invention discloses a device for forming a solid reinforcing rib from a rotational molding container in one step. The device comprises a rotational molding mold, a crank arm and a heating box; the rotational molding mold is arranged on the top surface of a rotating disc, the rotating disc is connected with the crank arm, and the rotational molding mold is located in the heating box for heating forming; an upper die is arranged on the outer wall of a lower die in a sleeving mode and axially moves in the vertical direction of the lower die, an annular reinforcing rib structure is arranged at the joint of an inner cavity of the upper die and an inner cavity of the lower die, a push-pull air cylinder is installed on the outer wall of the upper die, the output end of the push-pull air cylinder is connected with the lower die through a bolt, and the upper die is connected with the lower die through a reset spring; and a fluoroplastic plate is arranged at an opening in the top of the upper die, and a fluoroplastic breather pipe is arranged in the middle of the fluoroplastic plate in a penetrating manner. The method has the advantages that one-time feeding and one-time forming of the local entity of the reinforcing rib of the rotational molding container product are achieved, secondary filling or welding of the local structure of the product is not needed, and the production and machining technological process becomes simple.

Description

technical field [0001] The invention belongs to the technical field of rotomolding, and relates to a device and a process for one-time molding into a solid rib, in particular to a device and a process for one-time molding of a rotomolded container into a solid rib. Background technique [0002] The rotational molding process is a plastic hollow molding process that uses a rotating mold for processing plastics. The processing process is to put the material powder or slurry into the mold, and the closed mold rotates or swings on the equipment, and at the same time, the outside of the mold is heated by an open flame or hot air, and the material powder or slurry is heated in the mold. Turn and flow internally, after the temperature reaches the softening point, gradually and evenly coat, melt and adhere to the entire inner surface of the mold cavity, form into the required shape, then cool and shape, demould, and finally obtain the product; [0003] In the prior art, the connect...

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Problems solved by technology

[0003]In the prior art, the connecting flange of the rotomolded container product is formed into a hollow structure, and the product is connected by bolts during use, and the structure is poorly stressed. It is easy to crack and damage, and there is a bigger problem when bolt holes need to be drilled. For rotomolded fuel tanks, water tanks and chemical containers, cracking and leakage will cause functional failure and serious quality and safety risks.

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