Holder for car cable
Free-form injection molding in the automotive sector
Part Design
This part design was provided by a leading global automotive manufacturer based in Germany. STEP files are preferred for FIM.
60 minutes
Mold making
The next step is to convert the STEP file into a mold design. To do this, the part is rotated into a cavity in a block of material, and then the inlet opening(s) and the first vent are added.
2 hours
Print tools
As it was a large piece, the mold was divided into two parts and put together.
5 minutes
Freeform Injection Molding (FIM)
The parts were formed on a 50-ton press. The FIM molds work hand in hand with every installed basic molding system.
An aluminum mold frame was used to hold the large mold assembly in place.
1 day
Demolding
The alkaline Nexa3D solution was used to demold these parts over a period of 2.5 days.
This time can be optimized by redesigning the mould or by removing part of the mould before demoulding.
The holder above comes straight from the tool: no post-processing, no polishing. The details in the design and the functionality of the part stand out clearly.
Total time to the injection-molded part:
3 hours 5 minutes + 1 day demolding
Observations
- The construction of the molds is a simple process.
- The material (BASF Ultramid®) fills the molds well in the first test rounds.
- Optimization for demoulding is always a good thing and improves the subsequent iterations.
- Data sheets were used for mold data, settings, pressure, temperatures and more.
- Iterating the design, changing the materials or both based on the results achieved are just some of the benefits of working with
- Freeform Injection Molding.
Live tests for 9 weeks:
3 days after receipt of the partial draft
Result
The parts were installed in a series of high-end sports cars.
- The part is located directly above the turbocharger in the engine area
- Several parts were tested under real conditions for more than 9 weeks:
- Extreme temperature conditions.
- Humidity test.
- UV exposure.
- Various vibration conditions.
- Mechanical performance tests.