Compared with the hot runner system, what are the advantages and disadvantages of the runner system in the production process of the battery holder shell?

Compared with the hot runner system, the runner system has its own advantages and disadvantages in the production process of the battery holder shell. The design and manufacture of the cold runner system are relatively simple, and no additional heating equipment and temperature control system are required, so the initial investment cost is low. Since the cold runner system does not have complex heating elements and temperature control circuits, its maintenance and maintenance are relatively simple, which reduces the long-term operating cost. For some injection molded parts that do not require particularly strict temperature control, the cold runner system can meet production needs and is more cost-effective.
During the production process of the cold runner system, the plastic in the runner part will cool and solidify and demold with the product. This part of the material cannot be reused, resulting in material waste. Since the solidified runner waste needs to be removed manually or mechanically, the auxiliary time in the production process is increased and the production efficiency is reduced. The cold runner system is not as accurate as the hot runner system in temperature control, which may cause defects in the runner part of the injection molded parts, such as shrinkage holes, bubbles, etc., affecting product quality.
The hot runner system keeps the plastic at the runner and gate in a molten state by heating, avoiding material waste and improving material utilization. The hot runner system does not need to wait for the runner to cool and solidify, and can be produced continuously, reducing auxiliary time in the production process and improving production efficiency. The hot runner system can more accurately control the temperature and flow state of the plastic in the mold, thereby obtaining better molding quality and higher dimensional accuracy.
The hot runner system requires additional heating equipment and temperature control systems, which increases the initial investment cost. The hot runner system requires regular maintenance and care to ensure the normal operation of the heating elements and temperature control loops, which increases the difficulty and cost of maintenance. The hot runner system requires high skills and experience of the operator, and requires proficiency in skills such as temperature control and equipment debugging.
Cold runner systems and hot runner systems each have their own advantages and disadvantages. When choosing, they should be considered comprehensively based on factors such as the production needs, cost-effectiveness, production efficiency and quality requirements of specific products. For products such as battery holder shells, if there are high requirements for product quality and production efficiency, and the cost allows, the hot runner system may be a better choice.