The overall design requirements for toy plastic parts: the drawings should be standardized, and the references to the same icon annotations in the drawings should be unified. The purchased parts manually produced before mold opening should be stock general parts or national standard parts.
If the color of a certain part of the product appearance is different, you should first consider disassembling, and then carry out the 4 items of oiling, silk-screening or labeling. In addition to the appearance required by the customer, the design of plastic parts should also consider the production of molds. In principle, if insert cannot be used, row position cannot be used. The accuracy of the mold and the size of the part mainly depend on the accuracy of the mold and the size of the part.
The demolding slope of toy plastic parts: Generally, hard rubber parts must be designed along the demolding direction, Injection Molding Machine with sufficient demolding slope. Wall thickness of plastic parts: The wall thickness of the same plastic part should be the same. Otherwise, the gradual change principle should be adopted, but it should not exceed 1.5-2 times the wall thickness 9. Rounded corners/rounded edges: During the molding process of plastic parts, the structure of toy plastic parts should be as smooth as possible.
In terms of the performance of toy plastic parts, the surface of the plastic parts should be as smooth as possible to reduce the potential hazards of the product and the stress concentration at acute corners, as well as sharp edges. Surface finish and surface pattern: Generally speaking, the surface finish of the mold should be one level higher than that of the plastic parts. If there is no requirement for the surface finish of the plastic part, it is recommended to increase the brain pattern to improve the molding quality of the plastic part.
Stiffener (bone): The material thickness of toy plastic parts is 0.5-0.6 times the wall thickness, the transition fillet between the steel bar and the wall should be better than 0.25 times the wall thickness, and the height of the stiffener should not exceed 3-of the wall thickness. 10 times; the end face of the stiffener should be completely rounded to reduce its own pressure.
Lips: no special requirements, single lip, single-side outlet structure, lip size 0.3-0.5mm; for ultrasonic parts or other rubber parts with higher matching requirements, you can choose double lips, hole: toy plastic parts are generally divided For through holes and blind holes. The distance between the hole and the hole should be at least 2 times the hole diameter, and the hole edge and parts should be as large as 3 times the hole diameter.