Page 98 - 《橡塑技术与装备》英文版2026年1月

HINA R&P TECHNOLOGY AND EQUIPMENT

sizes to ensure that the heating coils can be evenly arranged additional processing of flow channels. To ensure heat transfer
without affecting the heating effect. At the same time, check efficiency, the lower heating plate is designed as a solid plate,
the wiring and insulation of the heating coils to ensure safety with precision requirements for flatness, parallelism, and
and reliability. other aspects consistent with the original lower heating plate
(2) Electromagnetic heating technology eliminates structure.
the need to introduce steam into the upper heating plate, (3) The thickness and hole design of the upper heat shield
meaning that the new upper heating plate does not require are carried out according to the technical requirements of
additional processing of flow channels. To ensure heat transfer electromagnetic heating.
efficiency, the upper heating plate is designed as a solid plate, (4) To reduce electromagnetic radiation and mitigate
with precision requirements such as flatness and parallelism the heating effect of the heating coil on the base unit panel, a
consistent with the original upper heating plate structure. magnetic isolation plate can be added between the lower heat
(3) The upper heat shield is designed for thickness insulation plate and the base unit panel.
and hole opening according to the technical requirements of The schematic diagram of the design is shown in Figure 3.
electromagnetic heating.
(4) To reduce electromagnetic radiation and mitigate the
heating effect of the heating coil on the upper support plate,
1-Lower heating plate; 2-Lower coil plate; 3-Heating coil;
a magnetic isolation plate can be added between the upper
4-Lower heat insulation plate; 5-Magnetic isolation plate; 6-Base unit panel
support plate and the upper heat insulation plate. Figure 3 Schematic diagram of the hot plate structure
The schematic diagram of the design is shown in Figure 2. under electromagnetic heating

3.3 Design of electromagnetic heating
scheme for mold sleeve
The mold sleeve, as a core component in the tire
vulcanization process, has a direct impact on tire quality
1-Upper support plate; 2-Magnetic isolation plate; and vulcanization efficiency due to its heating effect. The
3-Upper heat insulation plate; 4-Upper coil plate; 5 - Heating coil;
6-Upper heating plate traditional steam heating method involves directly injecting
Figure 2 Schematic diagram of the electromagnetic high-temperature steam into the mold sleeve cavity, whereas
heating upper heating plate structure the electromagnetic heating method requires a specially

designed electromagnetic heating shield to heat the mold
3.2 Design of electromagnetic heating sleeve. Since electromagnetic heating necessitates strict control
scheme for lower heating plate over the distance between the heating coil and the magnetic

The electromagnetic heating scheme for the lower heating
conductor to ensure effective heating and heating range, a set
plate is relatively simple to design. Since the lower heating
of electromagnetic heating shield is only suitable for molds
plate usually does not need to accommodate molds of different
of the same external dimensions. When the mold dimensions
specifications, as they are all installed in the T-slot of the lower change, the corresponding size of electromagnetic heating
heating plate, the design can be directly based on the original
shield needs to be replaced. Of course, it is also possible to
structure. The specific design approach is as follows:
directly wrap the heating coil around the mold's outer wall,
(1) Firstly, according to the size and heating requirements
but this solution requires each mold to be equipped with a set
of the curing press, select the appropriate size and
of electromagnetic heating coils, with no interchangeability,
specifications of the electromagnetic heating plate.
resulting in high cost investment, and the heating coil may
(2) Electromagnetic heating technology eliminates
affect the replacement of tread blocks. Our company has
the need to introduce steam into the lower heating plate,
designed a detachable electromagnetic heating shield that
meaning that the new lower heating plate does not require

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