30 principles of standardized production of injection moulds

1. less than 2020 of the mold embryo, between a and B boards need to be a pry pit; more than 2020 of the mold embryo, all templates including the thimble boards should be prized.
2 the mold guide sleeve should process the exhaust slot to prevent the guide pin from pulling.
3 die must not have sharp angle, need chamfering treatment. Excepted places are excepted
4 internal mold and mold parts shall not be welded without consent.
5 the periphery of the mold must be opened in the proper position. The specifications of the exhaust manifold refer to the die design manual.
6 as far as possible, avoid using the grinding machine to polish the mold. If you must use the grinding machine, you must use the oil stone (especially the parting surface).
7 the surface treatment of the inner surface of the die must be carried out according to the technical requirements of the BOM form or other official notification. Processing lines on non adhesive surfaces (wire cutting, milling machines, CNC Gong beds, spark machines) also need to be brightly lit.
8 all internal mold materials, mold grading requirements must be purchased according to the order, or the technical requirements formally identified in the design process. Material proof must be provided. If it is a hard mold, heat treatment report must be provided.  All relevant certificates.
9 the front and back mould, insert, row position, oblique top, straight top (push block), shovel chicken, etc. need to process a waist round pit at the bottom or side, and engraved the name and hardness of the material.
10 row bits, pushing blocks, shoveling chickens and mouths and other important wear parts must be nitrided and hardened.
The 11 line must have a position. The positioning methods include catapult, wave beads, HASCO (DME) standard position clamp and so on. The row needs to have a pressure strip and a wear-resistant plate.  Layering, wear resistant plate must be wear resistant hard material, need to add oil groove.
The 12 row inclined pillar must be tightly pressed, unable to rotate and loose. The tail part of the inclined guide must be processed into hemispherical or conical shape, which is beneficial to ensure normal movement of the row. The length, size and inclination of the slanting guide column must be the same for two or two more inclined columns on the same row.
13 cable-stayed seats must be hardened and hardened. The slanted roof must be processed with an oil tank, and the top seat is usually hardened to hrc40-45 by 2510 or Cr12, because the slanted roof is subjected to the impact load, so it can’t be too hard or it will break, and angle c angle at all right angles. There needs to be a skew guide plate (bronze). No welding.
The 14 channel and the injection position need to save the light #400-600.
15 the thimble, the barrel, the thimble, the oblique top and the thimble plate should be engraved with the corresponding identification code, which is convenient for installation. If the thimble position is not horizontal, the pin seat should be made into a “D” type or an anti pin key.
16 the thimble should adopt HASCO or DME standard, which kind of mould technology requirement determined by BOM table or other formal notice should be chosen.
17 processing water rubber ring (“O” ring) slot, the need for single side reserved 0.25mm clearance, the general rubber ring to prepress the 0.5-0.8mm. if not attached to this point, the apron is easy to be damaged by pressure, causing leakage.
18 nozzles to nitride, need to do stop pin. The radius of the pump must be in accordance with the requirements of the drawing. The nozzle is not nitrided, and it may have been damaged before the mold is moved.
19 conventional structure die must be equipped with supporting head, both ends need to be smoothed, small die prepressing 0.1mm, large die prepressing 0.1mm-0.15mm.
20 the diameter of the locating ring must conform to the drawing, and the form and position of the top bar must conform to the drawing.
21 according to the BOM gauge or the confirmed die diagram, the nozzle must be processed and installed according to the mold drawing.  The drilling must not be drilled, and the sharp angle needs to be chamfered.
22 water must be in1, out1, in2, out2… ..
23 all the marks on the mould must be neat, straight and not crooked.
24 mold needs to be installed in the four sides of the side lock (straight lock). If you can not install the side lock, you need to install taper lock or conical lock. The taper lock should be installed horizontally.
25 all screws and mold fittings are required to have standard parts, and screw heads can not be sawn off. The length of effective locking of screws must be sufficient, normally 1.5 or 2.
26 the heat sink must have fillet to avoid scratching wires.
27 the hot mouth ID card is mounted on the side of the mold panel.
28 mold transfer inspection: need to cooperate with the mold engineer according to the “mold check list” acceptance before passing the packaging mold.
29 before moving the mold, it is necessary to carry out the test of water pressure (100Pa or above).
30 the outer surface of mould must be maintained in the manufacturing process to prevent rusting and scratching. Before the mold packing, white or / or colourless rust inhibitor is needed for the internal mold, all the surface of the mold must be cleaned, and then butter.