Core Mold Manufacturing Technologies

1. Demolding Optimization for Thin Rib Structures

• Optimize draft angle on every thin rib surface to reduce friction between plastic part and mold steel;
• Adopt gradual ejection action to avoid instant heavy pulling force on fragile thin ribs;
• Reinforce rib root wall thickness in mold design, eliminate stress concentration during demolding to prevent rib breakage.

2. Cavity-Side Ejector Pin Auxiliary Demolding Solution

• Arrange multiple precision small ejector pins directly on the cavity surface, covering barb rib zone and buckle base area;
• Synchronous ejection from both cavity and core sides to release the plastic clip evenly;
• Avoid single-side pulling that causes twisted, cracked thin ribs after mold opening.

3. Separate Insert Design for Thin-Wall Plastic Sections

1. Easier Machining & Maintenance: Thin rib inserts can be processed separately by wire EDM, higher precision for layered barb shapes; if inserts wear out after long mass production, only replace the insert instead of whole cavity, greatly cut maintenance cost.
2. Superior Venting Performance: Small gaps between split inserts serve as natural vent slots, smoothly exhaust trapped air during plastic injection; effectively eliminate burn marks, short shot and bubble defects on thin plastic ribs.
3. Convenient Polishing & Draft Tuning: Individual inserts allow fine adjustment of draft angle and surface polishing without altering the entire mold block.

Platform Service Advantages

1. Custom mold design according to customer 2D/3D drawings or physical samples;
2. Full mold processing flow: CNC roughing, wire EDM for thin ribs, mold fitting and trial molding;
3. Flexible mold modification and quotation update once final revised drawings are provided;
4. Mass production of automotive plastic clips with strict assembly force, aging and impact testing for auto-grade quality.