Automatic jacketed rotational moulding device specially for truck shell

Abstract

The invention relates to an automatic jacketed rotational moulding device specially for a truck shell. The automatic jacketed rotational moulding device comprises a stand, a mould, a rotary mould base, a main shaft, an auxiliary shaft, a PLC (Programmable Logic Controller) automatic control system as well as an automatic mould opening and closing device, an automatic quantitative-charging device, a die heater and an automatic pick-up device controlled by the PLC automatic control system. The rotary mould base is mounted on the stand and can rotate around the main shaft and the auxiliary shaft simultaneously; the mould consists of a movable die and a fixed die, wherein the fixed die is fixedly mounted on the rotary mould base; the movable die is to controlled ascend or descend by the automatic mould opening and closing device and is in a closing or opening state with the fixed die; and walls of the movable die and the fixed die are internally provided with oil pipelines; and the die heater supplies circulating hot oil or circulating cold oil for the oil pipelines through an oil pump and an oil pipe according to technological requirements. According to the invention, the labour intensity is lowered, the working efficiency is improved, the heat transfer efficiency is improved in the mould heating process, the mould is ensured to be heated uniformly and the wall thickness of products is guaranteed to meet the requirement ideally.

Description

Technical field: [0001] The invention belongs to the technical field of rotational molding (or called rotational molding), and in particular relates to a special jacketed rotational molding equipment for fully automatic car shells. Background technique: [0002] Rotomolding is a process that uses heat and rotation along two axes to produce hollow plastic articles such as plastic car shells. There are many types of traditional rotational molding equipment, but most of them have the following disadvantages: [0003] 1. In terms of feeding method, traditional rotomolding equipment uses manual weighing of materials, after the mold is partially closed, then the plastic powder is poured into the mold, and then the mold is completely closed with screws or clamps, so the feeding efficiency is low. [0004] 2. In terms of heating method, traditional rotational molding equipment needs a heating chamber that can accommodate the entire mold rotation space, and burn oil, gas, electricit...

AI Technical Summary

Problems solved by technology

[0003] 1. In terms of feeding method, traditional rotomolding equipment uses manual weighing of materials, after the mold is partially closed, then the plastic powder is poured into the mold, and then the mold is completely closed with screws or clamps, so the feeding efficiency is low

[0004] 2. In terms of heating method, traditional rotational molding equipment needs a heating chamber that can accommodate the entire mold rotation space, and burn oil, gas, electricity or other fuels to directly or indirectly act on the surface of the mold through air to achieve the purpose of mold temperature rise , so that the efficiency of the actual heat transfer to the mold is less than 20%

[0005] 3. The mold of traditional rotomolding equipment is unevenly heated, which makes it difficult to guarantee the wall thickness of the product

[0006] 4. The mold of traditional rotomolding equipment uses screws or quick clamps to lock the mold. When opening the mold, it is necessary to separate the mold by hoisting, crowbar and other tools after removing the screws and clamps to achieve removal. The purpose of the product, so the whole process is very cumbersome, not only the labor intensity of the workers is high, but also the efficiency of mold opening and picking is very low

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