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A kind of rotational molding mold and its processing technology

A rotational molding and processing technology, applied in home appliances, other home appliances, coatings, etc., can solve the problems that restrict the quality and development of all-plastic body molding, slow internal air flow, and little macro control. Achieve the effect of ensuring apparent quality, improving service life and improving mechanical strength

Active Publication Date: 2021-08-13
吴晓春
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The all-plastic body structure is a deep concave structure with many surface bumps and slow internal air flow. Therefore, the macro control in the prior art has little effect, which restricts the molding quality and development of the all-plastic body.

Method used

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  • A kind of rotational molding mold and its processing technology
  • A kind of rotational molding mold and its processing technology
  • A kind of rotational molding mold and its processing technology

Examples

Experimental program
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Effect test

Embodiment 1

[0047] see Figure 1-2 , a rotational molding mold, including a mold body, the inner end of the mold body is dug with an all-plastic vehicle body cavity, and the mold body includes several mold subunits 1, for processing products with complex shapes such as all-plastic vehicle bodies, the mold volume and quality Large, complex surface structure, if the block method of irregular multi-directional mold is adopted, it is necessary to turn over and adjust the angle of the mold when installing and dismantling the mold, which makes opening and closing the mold difficult and inefficient When using a block mold, it is easy to reduce the assembly accuracy, and the installation and coordination between the block molds are misplaced. The method of dividing and combining large-scale and complex aluminum alloy mold units is used to divide the three-dimensional unit of the all-plastic body mold. The mold block method Mainly aiming at the shape of the mold cavity, directly divide the mold of...

Embodiment 2

[0066] The difference between this embodiment and Embodiment 1 is that when the thickness of the all-plastic body is relatively thick, the "solid + foam + solid" sandwich reinforced all-plastic body structure only relies on the bonding force between surfaces, and the strength is difficult to meet the design requirements , so technicians can selectively install an electromagnet on the temperature control node 6, and the electromagnet is also electrically connected to the auxiliary control module 5, that is, the temperature control node 6 can realize dual control of temperature and magnetic field at the same time. The auxiliary material package and the glass fiber reinforced polyethylene resin are mixed with an appropriate amount of magnetic particles during the preparation process. The magnetic particles can be micro-nano-level Fe203, Fe304 or Ni particles, etc., and the first layer of glass fiber reinforced polyethylene resin is melted to cover the mold After the inner wall is ...

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Abstract

The invention discloses a rotational molding mold and its processing technology, which can realize the development of a set of material-structure-process mutual coupling design system, through the material preparation of glass fiber reinforced polyethylene resin and auxiliary materials, and adopt large and complex The method of splitting and combining the aluminum alloy mold unit is to divide the three-dimensional unit of the all-plastic body mold into blocks, and use the aluminum alloy casting molding technology to manufacture aluminum alloy micro-elements, which can divide the all-plastic body mold responsible for the shape into parts, and reduce the weight of the body. Difficulty in the overall processing of the mold improves the service life of the mold and ensures the apparent quality of the product. In the process, a new temperature control method of directional heating is introduced. Directional heating in key areas can not only produce uniform wall thickness and high-quality products with uniform wall thickness, but even thicken local areas to improve the mechanical strength of the product and the service life of the product.

Description

technical field [0001] The invention relates to the technical field of mold processing, and more specifically, relates to a rotational molding mold and a processing technology thereof. Background technique [0002] At present, the main direction of the development of automotive material technology in the world is lightweight and environmental protection. Reducing the weight of the car itself is one of the most effective measures to reduce car emissions and improve combustion efficiency. For every 10% reduction in car weight, fuel consumption can be reduced by 6%-8%. Materials play a key role in the development of more economical, safer and lighter vehicles. In recent years, aluminum alloys, high-strength steels, synthetic plastics and ceramics have become rivals for certain applications. Among these materials, plastic has the lowest specific gravity. It is 36% lighter than aluminum alloy and 78% lighter than steel. It has good mechanical properties, corrosion resistance, a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C41/04B29C41/46B29C33/30B29K23/00B29L31/30
CPCB29C33/302B29C41/003B29C41/045B29C41/46B29K2023/06B29L2031/3055
Inventor 江洁赵海波
Owner 吴晓春
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