Rotational molding mould and processing technology thereof

A rotational molding and processing technology, which is applied to household appliances, other household appliances, household components, etc., can solve the problems of slow internal air flow, restrict the quality and development of all-plastic body molding, and have many surface bumps and features, and achieve improvement. The effect of molding quality

Active Publication Date: 2019-12-13
东莞秋元精密塑胶模具有限公司
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  • 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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  • Rotational molding mould and processing technology thereof
  • Rotational molding mould and processing technology thereof
  • Rotational molding mould and processing technology thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] 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

[0069] 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 mould and a processing technology thereof. A material-structure-process coupling design system can be developed, an all-plastic vehicle body mould is divided into three-dimensional units through preparation of glass fiber reinforced polyethylene resin and auxiliary materials and by a large complicated aluminum alloy mould unit segmenting, combining andmolding method, aluminum alloy micro-elements are manufactured by an aluminum alloy casting molding technology, the shape-responsible all-plastic vehicle body mould can be divided into different parts, thus, the integral processing difficulty of the vehicle body mould is reduced, the service life of the mould is prolonged, the apparent quality of the product is ensured, a novel temperature controlmethod for directional heating is introduced in the process, under the micro-control of ensuring the global temperature uniformity of the mould, directional heating of some key areas can be realized,high-quality products with uniform wall thicknesses can be produced, local areas can even be thickened, the mechanical strength of the product is improved, and the service life of the product is prolonged.

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 the car's self-weight, the 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, corrosio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C41/04B29C41/46B29C33/30B29K23/00B29L31/30
CPCB29C33/302B29C41/003B29C41/045B29C41/46B29K2023/06B29L2031/3055
Inventor 江洁赵海波
Owner 东莞秋元精密塑胶模具有限公司
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