Plastic injection chair mold design is a critical aspect of modern furniture manufacturing, ensuring high-quality, efficient, and cost-effective production. Below are the core elements of chair mold design, as highlighted in your description:

1. Selection of Mold Steel Materials

• Cavity Steel: Pre-hardened steels like P20 are commonly used due to their excellent wear resistance and suitability for long-term production.

• Surface Treatment: Techniques such as nitriding or chrome plating are applied to enhance the mold's durability, reduce sticking, and extend its service life.
      

2. Structural Design of the Chair Mold

• Parting Surface Design: The parting line should be carefully placed to avoid visible surfaces of the chair, ensuring a clean appearance and precise mold closure.

• Demolding Slope: A slope of 1° to 3° is recommended to facilitate smooth demolding, preventing scratches or deformation of the chair.

• Wall Thickness Uniformity: Maintain a consistent wall thickness of 2-4mm to avoid issues like shrinkage (if too thick) or insufficient strength (if too thin).

• Reinforcing Rib Design: Strategically placed ribs improve structural strength without compromising the chair's aesthetic appeal.
    

3. Cooling System Design

• Conformal Cooling Channels: These channels are designed to follow the contours of the chair, improving cooling efficiency and reducing cycle times by over 30%.

• Avoid Crossing Waterways: Ensure cooling channels do not intersect to prevent uneven cooling, which can lead to part deformation.
   

4. Surface Treatment Processes

• Mirror Polishing: Applied to contact surfaces (e.g., seat areas) to enhance the tactile feel and comfort of the chair.

• Etch Texture Treatment: Adds functional and aesthetic textures, such as wood grain or stone grain, for non-slip properties and personalized design effects.
   

5. Key Considerations for Mold Design

• Precision and Durability: The mold must be designed to withstand high-pressure injection cycles while maintaining dimensional accuracy.

• Efficiency: Optimizing cooling and ejection systems ensures faster production cycles and higher output.

• Aesthetic Quality: Surface finishes and texture treatments contribute to the final appearance and functionality of the chair.
   

6. Why Choose LANGKO MOULD?

• Expertise: Specialized in chair mold design and manufacturing, ensuring high-quality molds tailored to your needs.

• Advanced Technology: Use of conformal cooling and precision machining for superior mold performance.

• Custom Solutions: Ability to create molds for unique designs, including textured surfaces and ergonomic features.

If you are looking for a reliable partner for chair mold design and manufacturing, LANGKO MOULD is your go-to solution. Feel free to reach out for customized mold solutions that meet your production requirements!

Contact person: Grace
Email: sales2@langkomould.com