Automatic layout design of plastic injection mould cooling system

2005 ◽  
Vol 37 (7) ◽  
pp. 645-662 ◽  
Author(s):  
C.L. Li ◽  
C.G. Li ◽  
A.C.K. Mok
Keyword(s):  
Cooling System ◽  
Layout Design ◽  
Injection Mould ◽  
Automatic Layout ◽  
Plastic Injection Mould ◽  
Plastic Injection

Automatic Synthesis of Cooling System Design for Plastic Injection Mould

2001 ◽  
Author(s):  
C. L. Li
Keyword(s):  
System Design ◽  
Cooling System ◽  
Research Area ◽  
Plastic Part ◽  
Injection Mould ◽  
Design Synthesis ◽  
Initial Design ◽  
Important Research Area ◽  
Plastic Injection Mould ◽  
Plastic Injection

Abstract This paper reports an automatic algorithm that synthesizes the design of cooling system for plastic injection mould. Automation in cooling system design is an important research area that has not received much attention. In the proposed method, a building block approach to design synthesis is adopted. Given a plastic part and a library of pre-defined cooling sub-systems, the algorithm first decomposes the part into features known as cooling features. For each cooling feature, the corresponding cooling sub-systems are retrieved from the library. The cooling sub-systems are then modified and combined into an initial design of the cooling system for the entire plastic part. The performance of the initial design is verified by using CMold analysis. A design synthesis program has been implemented and an example is given to illustrate the feasible of the proposed algorithm.

scholarly journals Bonding Integrity of Hybrid 18Ni300-17-4 PH Steel Using The Laser Powder Bed Fusion Process For The Fabrication of Plastic Injection Mould Inserts

2021 ◽  
Author(s):  
Yuk Lun Simon Chan ◽  
Olaf Diegel ◽  
Xun Xu
Keyword(s):  
Tool Steel ◽  
High Performance ◽  
High Volume ◽  
Successful Outcome ◽  
Powder Bed Fusion ◽  
Laser Powder Bed Fusion ◽  
Injection Mould ◽  
Powder Bed ◽  
Plastic Injection Mould ◽  
Plastic Injection

Abstract Laser powder bed fusion (LPBF) is a metal additive manufacturing (AM) process for fabricating high-performance functional parts and tools in various metallic alloys, such as titanium, aluminium and tool steels. The process can produce geometrically complex features such as conformal cooling channels (CCC) in plastic injection mould inserts to improve cooling efficiency. A recent attempt using a hybrid-build LPBF AM technique to fabricate aluminium mould inserts with CCC attained a substantial reduction in processing time, making it an attractive alternative method to the mould-making industry. Also, the successful bonding of aluminium powder with wrought aluminium alloys proved the practicability of this concept. This study further investigates whether a similarly successful outcome could apply to tool steel since tool steel is the preferred material for constructing high-grade high-volume plastic injection moulds. In this investigation, hybrid 18Ni300 powder-wrought 17-4 PH steel parts were additively fabricated using the hybrid-build LPBF technique, followed by various post-build heat treatments. The mechanical and metallurgical properties of the samples’ bonded interface were examined. Microstructure analysis revealed homogenous powder-substrate fusion across the interface region. Results from tensile tests confirmed strong powder-substrate bonding as none of the tensile fractures occurred at the interface. A direct post-build one-hour age-hardening treatment achieved the best combination of hardness, tensile strength, and ductility. The overall result demonstrates that hybrid-built 18Ni300-17-4 PH steel can be a material choice for manufacturing durable and high-performance injection mould inserts for high-volume production.

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