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1、 Production mold number

1. The mold number must be processed using a milling machine above the outer end face of the mold blank (square iron), with a height of 40mm and a depth of 0.5mm, and the font should be an equal line font.

2. Each template must be labeled with the mold number using a letter code, and the direction must be consistent.

3. All screws, hanging ring holes, and mold components of the mold must be in metric specifications, while the processed mold accessories must be in standard specifications, and self making is prohibited.

2、 Prying position

1. Each set of molds is milled with four corner pry positions on the B board (moving template) for use in FIT and mold repair.

3、 Code pit

1. Non I-shaped mold blanks need to be milled with code grooves in the front and rear molds, and the specific size depends on the mold design size.

4、 Code mold screw hole

1. Each set of molds must have mold holes drilled on the bottom plate of the moving mold and the fixed mold panel.

2. The hole spacing size needs to be determined based on the injection model

5、 Top rod hole

1. The bottom of the moving mold must have a sufficiently large top rod hole with a diameter of Φ 25-40mm

2. Small molds only require one top rod hole, medium molds must have at least three top rod holes, and large molds require five holes

3. The aperture and position of the top rod are based on the actual size of the injection machine (design size)

6、 Positioning ring

1. Each set of molds must be equipped with positioning rings (i.e. positioning flanges) to facilitate mold positioning,

2. The size of the positioning ring should be determined based on the aperture of the injection model wall panel,

3. The diameter tolerance of the positioning ring is 0.2-0.4mm, and the height of the protruding mold panel is 8-10mm,

4. The standard size of the positioning ring (flange) for the mold and machine board is 100mm-0.20 ^ -0.40mm,

7、 Reset the device first

1. When the ejector pin cylinder is related to the row position ejection device, a first reset device must be installed on the mold, and the ejector pin plate should not be reset solely by the spring to avoid spring failure and collision between the row position (core pulling) and the ejector pin cylinder in the future.

2. A travel switch must be installed between the top needle plate and the moving template to ensure that the reset device is effective before powering on and closing the mold.

8、 Top needle plate guide pillar guide sleeve

1. The length of the top pin plate is 12 or more, or the positioning of the work model is off center

2. Equipped with a large number of small top pins with a diameter of less than 2mm

3. Equipped with more than 10 cylinders,

4. In the above three situations, four guide pillars and sleeves must be added to the top needle plate to ensure that the top needle is balanced and smoothly ejected from the rubber part.

9、 Top needle plate spring bow

1. All molds must be equipped with four reset slingshots on the top needle plate to help the top needle retract evenly,

2. Using a blue slingshot specially designed for plastic molds, the two ends of the reset slingshot are ground flat,

3. The reset slingshot cannot compress more than 40% of the free length, and four ejection limit nails need to be made on the ejector pin panel under the effective ejection of the rubber part

4. To fix the reset slingshot, both ends must have fixed sinking holes, and the unreliable practice of sinking holes at one end and grinding the surface at the other end is prohibited.

10、 Automatic dehydration device

1. The fine water outlet mold (three plate mold) must be equipped with a pull rod, pull rod or return pin to ensure that the water outlet plate and A plate move and the water outlet automatically falls off.

2. The thickness of the material used for the pull rod is 10mm or more, or 12mm or more,

3. The diameter of the pull rod screw should not be less than 8-14mm,

4. Using B board (dynamic template) with 4 nylon glue nails (nylon pulling machine) installed on the surface, the effect is safe and reliable, economical and practical.