High-Efficiency Front Protection Plate Mold from China Suppliers - Factory with Hot Runner System for Automotive Parts
This mold is a large injection mold specifically designed for automotive front protective panels (such as A-pillar upper panels). By optimizing the gating system and core-pulling mechanism, it solves the problems of difficult filling of thin-walled parts and easy breakage of angled ejector pins. Both the mold cavity and core material are made of P20 steel, and the mold base is made of 45# steel. It is equipped with a water cooling system and a hot runner + side gate combination injection system to ensure high precision and durability.
1. High-efficiency Production
◎ Molding cycle ≤ 30 seconds, hot runner system reduces waste and improves efficiency.
2. Structural Optimization
◎ The double-slanted push rod core-pulling mechanism enhances demolding stability and reduces the risk of breakage.
3. Durable Material
◎ P20 steel mold cavity/core material + 45# steel mold base, balancing hardness and impact resistance.
4. Precise Cooling
◎ The water cooling system quickly controls the temperature, ensuring the dimensional stability of the plastic parts.
5. Multi-alveolar Design
◎ Two alveoli (right tooth + left tooth) to accommodate complex structures and reduce secondary processing.
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Decorative door frames for commercial projects and municipal engineering projects, combining practicality and aesthetics.
| Cavity Material | P20 steel |
| Core Material | P20 steel |
| Mould Base Material | 45# |
| Ejection System | Pin ejector and ejection plate |
| Number of Cavity | 2 cavities (right + left) |
| Gate | Hot runner system + Normal side gate |
| Cooling System | By water |
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Q What materials are used for the mold cavity and core in this automotive injection mold?
Both the mold cavity and core are made of P20 steel, which offers an excellent balance of hardness, machinability, and impact resistance. The mold base is made of 45# steel for additional structural strength and durability.
Q What is the molding cycle time for this injection mold?
The molding cycle is ≤ 30 seconds. This is achieved through the optimized hot runner system, which also reduces material waste and improves overall production efficiency.
Q How does the cooling system work in this mold?
The mold is equipped with a water-based cooling system that rapidly and precisely controls the mold temperature during the injection process. This ensures consistent dimensional stability of the finished plastic parts and supports faster cycle times.
Q What type of gating system does this mold use?
This mold uses a combination of a hot runner system and a normal side gate. This hybrid gating approach optimizes material flow into thin-walled areas, reduces waste, and enhances production efficiency.
Q How does the mold handle complex part geometries during demolding?
The mold incorporates a double-slanted push rod core-pulling mechanism, which significantly enhances demolding stability for complex geometries. This design greatly reduces the risk of ejector pin breakage compared to conventional single-angle designs.
Q How many cavities does this mold have, and what parts does it produce?
This mold features 2 cavities — one right tooth and one left tooth — specifically designed for automotive front protective panels such as A-pillar upper panels. The multi-cavity design accommodates complex structures and minimizes the need for secondary processing.



