Key Mold Design Challenges

Difficult ejection from deep U-shaped cavity: Requires sliders or angled lifters to ensure smooth demolding of the 180° bend without surface damage or deformation.
Balanced runner system and uniform cooling across 4 cavities: Ensures dimensional consistency among all parts and prevents sealing issues caused by uneven filling.
High air-tightness and dimensional accuracy: The tolerance at pipe ends is typically controlled within ±0.1 mm to guarantee leak-free connections during push-fit assembly or adhesive bonding.
Smooth internal flow path design: Minimizes fluid resistance and prevents particle buildup, demanding high-quality mold polishing and efficient venting.

Typical Application Industries

Building plumbing systems (e.g., P-traps for floor drains, sink waste pipes)
Home appliances (e.g., drain hoses for washing machines, water purifiers, and dishwashers)
HVAC systems (e.g., odor-sealing condensate drain traps for air conditioners)
Municipal and residential construction materials (e.g., standard PVC drainage fittings)
Industrial equipment (e.g., small liquid circulation or cooling loop connectors)

U-bend Pipe Injection Mold Design Proposal (1×4 Cavity)