Plastic Injection Mold Evaluation Guidelines

Plastic parts manufacturing companies' molds are neatly placed and the surface should not have pits, mirror effects, rust, unused rings, water pipe joints, gas pipe joints or any other defects that may affect the appearance of the cavity.

1. All templates should have chamfers greater than 1.5mm to avoid being too sharp and hurting people.

2. The mold should be installed with a suitable flange ring and open a standard code mold pit.

3. The mold accessories should be located above the mold surface, preferably on the non-operating side.

4. If each lifting ring weighs more than 10 kg, its size must be marked, or it must be easy to use.

5. The mold bottom plate should have a qualified ejector hole, and the hole position should meet the ejection balance requirements.

    Ensure that the support structure is 0.05-0.15mm higher than the block.

6. All cooling accessories should be marked with "IN" and "OUT", and serial numbers should be marked if necessary, such as IN1, OUT1, IN2, OUT2.

7. Each set of molds should be numbered, located 10mm from the edge, with clear, neat and evenly spaced markings.

8. Both the A and B plates of small molds must have lifting holes; all plates of large molds must have lifting holes.

9. The four corners of the mold should have prying grooves between the two plates.

10. The movement of the slide should be smooth, and the contact surface should have oil grooves. The slide should be installed with a spring that enables the slide to pop up, and a limit device should be installed.

11. The ejector should be set up by the plastic contract manufacturing company so that the product will not deform when demolding and will not affect the appearance of the plastic part. The ejector should be flexible, reliable, and without erroneous movements. When the top surface of the ejector and the sleeve is not flat, the ejector and the sleeve should be positioned.