Produzione di alloggiamenti per apparecchiature di ispezione mediante stampaggio a inserto

Injection Molding Defects and Quality Standards

1. Sink Marks:

The maximum depth of sink marks in this inspection equipment housing manufacturing project is 0.05 mm.

2. Warping:

Warping must be less than 0.2% of the total part dimension.

3. Flash:

Flash should not exceed 0.05 mm.

4. Scatti brevi:

No short shots are permissible.

5. Segni di bruciatura:

No burn marks are permissible.

Requisiti di montaggio

1. Screw Insert Alignment:

Brass screw inserts must be aligned within ±0.1 mm.

2. Surface Finish:

Surface roughness should be maintained at Ra 1.6 µm or better.

3. Dimensional Accuracy:

All critical dimensions must be within ±0.05 mm.

4. Fastening Integrity:

Screws must be fastened to a torque of 1-2 Nm.

Documentation and Reporting

1. Production Reports:

• Daily reports detailing production quantities, defect rates, and any issues encountered.
• Monthly summary reports including overall defect analysis and corrective actions taken.

2. Quality Inspection Reports:

• Detailed inspection reports for each batch, including measurements and compliance with specified tolerances.
• Non-conformance reports (NCR) for any detected defects, with root cause analysis and corrective action plans.

3. Material Certification:

• Certification of materials used, ensuring they meet the specified requirements for PVC and any other materials involved.

Q1. What types of materials are best for injection molding inspection equipment housings?

The most common materials include PVC, ABS, and polycarbonate due to their durability and ease of molding. The material choice depends on the specific application requirements such as strength, temperature resistance, and electrical insulation.

Q2. What are the typical lead times for developing injection molded parts for inspection equipment?

Lead times can vary based on complexity, but generally, prototype molds can take 4-6 weeks, and production molds can take 8-12 weeks.

Q3. How can you ensure the accuracy and consistency of our injection molded parts?

Implementing strict quality control measures, including dimensional inspections using CMM (Coordinate Measuring Machines), regular maintenance of molds, and thorough inspection of the first run parts.

Q4. What considerations should be taken into account when designing parts with deep internal ribs?

Deep ribs can cause sink marks and warping. Design considerations include ensuring uniform wall thickness, proper rib-to-wall thickness ratio, and strategic placement of ribs to balance the mold flow.

Q5. How do you prevent warping in large, flat parts of inspection equipment?

Warping can be minimized by maintaining uniform cooling rates, using proper mold design, and controlling the molding parameters such as temperature and pressure.

Q6. What are the best practices for incorporating threaded inserts into molded parts?

Threaded inserts can be incorporated using insert molding techniques, where the inserts are placed into the mold before injection. This ensures strong, durable threads and accurate placement.

Q7. How do you handle the assembly requirements for multi-part inspection equipment housings?

Ensuring precise alignment of parts, using alignment jigs and fixtures, and implementing rigorous quality checks to verify fit and finish. Fasteners should be torqued to specified limits to avoid damage.

Q8. How can you reduce the cost of injection molding for our inspection equipment housing manufacturing?

Cost reduction can be achieved by optimizing the design for manufacturability, using multi-cavity molds for higher production rates, and selecting appropriate materials that balance cost and performance.