In the field of mold heating, different installation methods of mold heating tubes have their own advantages and disadvantages in terms of heat transfer efficiency and ease of later maintenance. Among them, the embedded installation method performs particularly well in these two aspects.
Embedded installation is to directly embed the heating tube into the reserved hole slot of the mold. From the perspective of heat transfer, this installation method can ensure a tight fit between the heating tube and the mold. The heat generated by the heating tube can be directly conducted to the mold through the shortest path, reducing the loss of heat during the transfer process. Due to the large contact area between the heating tube and the interior of the mold, heat can be evenly distributed on the surface of the mold. For example, in injection molds, embedded heating tubes can ensure that plastic raw materials receive uniform heat in various parts of the mold cavity, thereby improving product quality and reducing product defects such as warping and shrinkage caused by local temperature differences.
In terms of later maintenance, embedded installation also has certain advantages. Because the heating tube is embedded inside the mold, as long as a suitable disassembly channel is reserved during the mold design, when the heating tube malfunctions, maintenance personnel can easily remove it for replacement or repair. Moreover, due to this installation method, the position of the heating tube is relatively fixed. During daily inspections, technicians can easily locate the position of the heating tube and perform performance tests, such as checking whether the resistance value of the heating tube is within the normal range and whether the surface is damaged.
The opposite of embedded installation is external installation. The external heating tube is installed outside the mold, although the installation process is relatively simple, there are certain disadvantages in heat transfer. Heat needs to be conducted through the outer shell of the mold to the interior, which results in a large thermal resistance, leading to a decrease in heat transfer efficiency and making it difficult to ensure uniform heating of various parts inside the mold. In terms of later maintenance, external heating tubes may be subject to more interference from external environmental factors, such as collisions, dust accumulation, etc., and their connection with the mold may also become loose due to thermal expansion and contraction, increasing the complexity of maintenance.
In summary, the embedded installation method performs well in terms of heat transfer efficiency and convenient maintenance in the later stage, and is one of the ideal choices for installing mold heating tubes. However, in practical applications, it still needs to be comprehensively considered based on factors such as the specific type and usage environment of the mold.
