Rotomolding oven and rotomolding mold heating device

Abstract

The invention provides a rotational molding drying tunnel and a rotational molding mold heating device, which belong to the technical field of working and are used for solving the problems of an existing rotational molding drying oven that a mold is not uniformly heated in a heating process and a deep-cavity type plastic product is difficult to directly mold. The rotational molding drying tunnel comprises a shell, a combustor and a fuel gas barrel, wherein the shell is internally provided with a volute chamber, an air inlet channel and an air outlet channel; the volute chamber is internally provided with a draught fan impeller and a rotary shaft of the draught fan impeller penetrates through the shell; and the combustor and the fuel gas barrel are fixed on the shell. The rotational molding drying tunnel is characterized in that the fuel gas barrel is located in the air inlet channel; a fire nozzle of the combustor is communicated with one port of the fuel gas barrel and the other port of the fuel gas barrel is arranged towards the volute chamber; an air outlet of the air outlet channel is provided with a plurality of air guide plates which are arranged in parallel; and the air guide plates are hinged with the shell. When the rotational molding drying tunnel is used for heating the rotational molding mold, the rotational molding drying tunnel has the advantages that the heating time is short, the heating is uniform, the deep-cavity type plastic product can be directly molded and the surface of the rotational molding mold keeps clean; and meanwhile, the rotational molding drying tunnel has the advantages of low energy consumption and energy source conservation.

Description

technical field [0001] The invention belongs to the technical field of operations, and relates to a processing of plastics, in particular to a rolling molding drying tunnel. [0002] The invention belongs to the technical field of operations, and relates to a processing of plastics, in particular to a heating device for a rolling mold. Background technique [0003] The rotational molding process is a thermoplastic hollow molding method. Compared with the blow molding process and the injection molding process, the rotational molding process can easily produce hollow plastic products of different sizes within a limited cost range. With the advancement of the rotomolding process, more and more products are manufactured using the rotomolding process. [0004] The rotomolding oven is one of the core equipment in the rotomolding process. The relevant literature on the rotomolding oven, such as the US patent Rotational molding machine (publication number: US4767299A), uses open fl...

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Problems solved by technology

[0004] The rotomolding oven is one of the core equipment in the rotomolding process. The relevant literature on the rotomolding oven, such as the US patent Rotational molding machine (publication number: US4767299A), uses open flame or semi-open flame heating. The disadvantage of this heating method is that rotomolding Product molding efficiency is low, heating time is long, and energy consumption is high; the mold is heated unevenly during heating, resulting in uneven wall thickness of the product; the mold is polluted during the heating molding process; it is difficult to directly form deep cavity plastic products

[0005] Another example is an energy-saving and environment-friendly rotomolding oven (publication number: CN102173020A) that the applicant applied for before; The problem of uneven heating of the mold and the inability to directly form deep-cavity plastic products

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