What technical requirements should be paid attention to in plastic mold processing and manufacturing

In order to improve the quality level of injection mold, minimize the complaints about the quality of plastic mold to the maximum extent, hand over to the mold satisfied by the customer, summarize and summarize the common problems in the processing and manufacturing of injection mold, establish norms, and perform as required.

1. for molds smaller than 2020, skid pits are required between plates a and B; Mold embryo larger than 2020 all formwork including thimble plates shall be provided with skid pits.

2. the die blank guide post guide sleeve shall be processed with an exhaust slot to prevent the guide post guide sleeve from being strained.

3. there shall be no sharp corners on the mold, and chamfering is required. The specially designated place is outside.

4. the nozzle shall be nitrided, and the anti rotation pin is required. The nozzle radius must meet the drawing requirements. The nozzle is not nitrided, and it can be bruised before moving the mold.

5. the support head must be installed for the conventional layout of the mold. The two ends need to be ground flat. The small mold is preloaded by 0.1mm and the large mold is preloaded by 0.1mm-0.15mm

6. the diameter of the locating ring must conform to the drawing, and the joint mode and orientation of the top rod must conform to the drawing.

What technical requirements should be paid attention to in plastic mold processing and manufacturing

7. for the specification of water nozzle, please refer to the die drawing recognized in BOM table. It is necessary to process and install the countersunk hole of water nozzle according to the die drawing. Drilling shall not be deviated, and sharp corners shall be chamfered.

8. it is necessary to mark ini, outI, in2, out2 for water transportation

9. all the words and marks printed on the mold must be neat, regular and not distorted.

10. the mold needs to be equipped with side lock (straight lock) on four sides. If you can’t install the side lock, you need to install the taper lock, maybe the taper lock. The taper lock shall be transverse to the device.

11. all screws and mold accessories shall be first selected as standard parts, and the screw head shall not be sawed off. It is necessary to meet the locking length of the screw, which is normally 1.5 or 2.

12. it is necessary to fillet the hot nozzle trunking to avoid scratching the wires.

13. install the hot nozzle ID card on the side of the mold panel.

14. mold transfer inspection: cooperative mold engineers are required to perform packaging and mold walking only after passing the inspection according to the “mold Checklist”.

15. before moving the mold, test the water pressure (above 100Pa) and clean the water with an air gun after the water is transported.

16. during the manufacturing process of the outer surface of the mold embryo, care should be taken to avoid rust and scratches. Before moving the mold for packaging, the inner mold needs to be sprayed with white/or colorless antirust agent. It is necessary to clean the surface of all molds, and then apply butter.