In the plastic processing industry and supporting plastic molding machine, plastic mold is a plastic products to give complete configuration and precise size of the tool. Many plastic processing methods, one of the small steps of a mistake may lead to failure of processed products. To improve the quality of mold quality, minimize mold quality complaints, to customer satisfaction mold, die manufacturing common problems are summarized, summarized, and the establishment of standards, according to the requirements.
1. Less than 2020 of the mold embryo, a, b need to do between the pry mold pits; greater than 2020 of the mold all the template, including the ejector plate must be done between the pry mold pits.
2. Mold embryo guide column guide sleeve to process the exhaust slot, to prevent the guide column guide sleeve strain.
3. Mold must not have sharp corners, need to be chamfered. Unless otherwise specified.
4. Internal mold and mold parts may not be welded without consent.
5. Mold products must be in the periphery of the appropriate location to open the exhaust slot, exhaust tank size, please refer to mold design manual.
6. As far as possible to avoid the use of grinding machine grinding in the mold, if you have to use grinding machine processing, you must use Whetstone save light (especially sub-surface)
7. The surface treatment of the inner mold surface must be performed in accordance with the technical requirements of the bom sheet or other formal notice. Non-plastic surface of the processing lines (line cutting, milling machine, cnc gong bed, sparks machine) also use oilstone province bright.
8. All internal mold materials, mold embryo grade requirements must be based on orders, or design review process formally confirmed the technical requirements for procurement. Material proof must be provided and heat treatment report if hard die. All relevant certificates.
9. All the mold before and after the mold, inserts, line position, inclined top, straight top (push block), shovel chicken and other needs in the bottom or side processing a waist circular pit, the material name and hardness carved out.
10. Line position, pushing block, shovel chicken, jack mouth and other important parts must be easy to wear nitrided hardened.
11. Position must be positioned. Positioning methods are slingshot, wave beads, hasco (dme) standard position clamp, etc., the specific needs in accordance with the requirements of each project. Line-bit need to have pressure, wear plate. Beading, wear-resistant board must be used to wear hard materials, the need to add oil tank.
12. The row of inclined pin must be pressed, can not turn and loose. Oblique guide post tail must be processed into a hemispherical or cone-shaped table, is conducive to ensuring the normal line of movement. The length, size, and inclination of the oblique guide post must be the same for two or more oblique guide posts on the same row.
13. Slanting seats must be made of hard-wearing materials. Sloping roof must be processed oil tank, inclined roof with 2510 or cr12 generally stiffened to hrc40-45 degrees, because the impact of the top seat is the impact load, so it can not be too hard or broken, and in all the right angle chamfer angle c . Need to have a sloping top guide plate (bronze). Not welding.
14. Runner and glue into the need to save light # 400-600.
15. Thimble, Secretary tube, Ding thimble, inclined roof and thimble plate to be engraved with the corresponding identification number, easy to install. If the product, the thimble position is not a horizontal plane, need to make the thimble seat made of "d" type or use anti-pin key positioning.
16. Thimble using hasco or dme standard, which depends on the bom table or other formal notice of the mold technical requirements.
17. Processing of water apron ("o" -shaped ring) groove, need to set aside 0.25mm of unilateral gap, the general apron to preload 0.5 ~ 0.8mm. If you do not attach importance to this, the apron is easily damaged by pressure Out, causing leakage.
18. The nozzle to be nitriding, you need to do to stop the pin. The nozzle radius must meet the drawing requirements. The jaws are not nitrided and may have been bruised before moving.
19. Conventional structure mold must be arranged stent, both ends need to be polished, small-mode pre-pressure 0.1mm, large-mode pre-pressure 0.1mm-0.15mm.
20. The diameter of the locating ring must be in accordance with the drawings, the form and location of the top stick must meet the drawings.
21. Spigot specifications According to bom table or confirm the model, the spigot countersink must be in accordance with the model for processing and installation. Drilling shall not drift, sharp angle to be chamfered.
22. transport water must be marked ini, outi, in2, out2 ......
23. all playing in the word on the mold must be neat, correct, not crooked.
24. The mold needs to install the side lock (straight lock) on four sides. If you can not install a side lock, you need to install a taper lock, or a tapered lock. Taper lock to be installed sideways.
25. All screws and mold accessories are preferred standard parts, screw head can not be cut off. The effective lock length of the screw must be sufficient, normally 1.5 or 2.
26. Hot-lips trough must be rounded, so as not to scratch the wire.
27. Install the hot-mouth id card on the side of the mold panel.
28. Before moving the mold to carry water to test the water pressure (100pa or more) acceptance transport water, the need to use air guns to blow clean water.
29. Emulsion surface in the manufacturing process, the need for attention to maintenance, to prevent rust, scratch. Before the mold is packed, the inner mold needs to be sprayed with white and / or colorless rust inhibitor. All mold surfaces must be cleaned and then buttered.
30. Mold transfer acceptance: the need to meet the mold engineer by "mold check sheet" to pass through the packaging to take the mold.
