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High-Precision Plastic Mould for Bumpers - China Suppliers & Factory for Automotive Injection Molding Components
Product Overview
This mold uses injection molding to process PP/ABS and other raw materials into highly consistent car bumpers. Its core structure includes a P20 steel mold core, a 45# mold base, a hot runner gate, and a double-groove ejection system. Optimized cooling channels can shorten the molding cycle by 50%, meeting automotive industry standards for light weighting and impact resistance. It is suitable for mass production of exterior parts such as front/rear bumpers and door panels.
Product Features
1
High Precision and Durability
◎ P20 steel mold core, dimensional error ±0.2mm, lifespan over one million cycles.
2
High-Efficiency Cooling
◎ The water cooling system reduces the molding cycle from 120 seconds to 60 seconds.
3
Flexible Configuration
◎ Supports multiple cavities and adjustable partitions to adapt to different product specifications.
4
Advanced Process
◎ Electrical discharge machining/wire cutting, surface roughness ≤ Ra0.4μm.
5
Stable Demolding
◎ The dual system of pin ejector and ejector plate reduces the risk of mold sticking.
Use Cases
Automobile Manufacturing
Mass production of bumpers for gasoline and new energy vehicles to meet pedestrian protection and lightweight requirements.
Customization Needs
Quickly adjust molds to adapt to model changes or special designs.
Industrialized Production
A single mold can support continuous injection molding of more than 500,000 bumpers.
Technical Parameters
| 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 |
Conclusion
Contact us now for a quote and experience the difference of working with the best in the business.
Frequently Asked Questions
Q
What materials can this car bumper injection mold process?
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This mold is designed to process PP (polypropylene) and ABS (acrylonitrile butadiene styrene) raw materials, as well as other compatible thermoplastics. Both materials are widely used in the automotive industry for their excellent impact resistance, lightweight properties, and processability.
Q
What is the expected lifespan of the P20 steel mold core?
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The P20 steel mold core is engineered for exceptional longevity, with a guaranteed lifespan of over one million injection cycles. This ensures long-term reliability in high-volume automotive production environments while maintaining a dimensional accuracy of ±0.2mm throughout its service life.
Q
How does the water cooling system improve production efficiency?
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The optimized water cooling channel design cuts the molding cycle time from 120 seconds down to just 60 seconds — a 50% reduction. This dramatically increases output per shift, lowers energy consumption per part, and reduces thermal stress on both the mold and the finished bumper components.
Q
Can the mold be customized for different bumper designs or vehicle models?
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Yes. The mold supports multiple cavity configurations and features adjustable partitions, allowing it to adapt quickly to different product specifications and vehicle model changes. This flexible configuration makes it ideal for both standard mass production and custom design requirements.
Q
What ejection system does this mold use, and why is it important?
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The mold uses a dual demolding system combining a pin ejector and an ejector plate. This combination ensures uniform force distribution during part release, significantly reducing the risk of mold sticking, part deformation, or surface damage — which is critical for maintaining the aesthetic quality of visible automotive exterior components.
Q
How many bumpers can a single mold produce over its service life?
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A single mold unit is capable of supporting continuous injection molding production of more than 500,000 bumpers. With a mold core lifespan exceeding one million cycles and a 2-cavity (left + right) configuration, this mold delivers outstanding return on investment for high-volume automotive manufacturers.