Basic product information:
Processing method: turning and milling composite precision parts
Product Category: Automotive Precision Parts
Material category: aluminum alloy precision machining
Surface treatment: bright chrome plating
Detailed description of product processing:
The automotive precision parts are made of AL6061 aluminum, first processed by CNC lathes, and then precision processed by CNC machining centers. The product structure is relatively simple, and the surface requirements are high. After processing, the surface is processed by mirror polishing, and then electroplated bright Chromium makes the surface of the product very beautiful;
Several knowledge that injection mold technology should know (1)
In the injection mold, the melt is usually poured through the injection port, but for some molds, the nozzle is integrated with the mold, so the melt can spread to the bottom of the mold. There are two injection nozzles for the injection mold: one is Open, but closed. Generally, an open type is often used in injection molds, which can reduce waste.
If the injection molding machine is equipped with a pressure release device, even lower viscosity hot melt adhesives can use this nozzle. Sometimes it is necessary to use a closed nozzle, where the nozzle is used as a shut-off valve, in the female runner plastic cylinder block. Ensure proper access to the nozzle nozzle sleeve, which is slightly smaller than the sleeve, which allows the nozzle to be more easily removed from the top nozzle hole of the mold. When the adapter nozzle hole is 1mm larger than the larger lens, it is smaller than the radius of the 0.5mm sprue nozzle sleeve radius.
2. Filter and combination nozzle
Plastic impurities can be removed by a filter with an expanded nozzle, that is, the melt and plastic flows are separated by channels inserted into narrow spaces. Therefore, fixed and fixed mixers can be used to extend the mixer to obtain a better mixing effect. These devices can be installed between the injection cylinder and the injection nozzle for separation and mixing. Most of the work of the molten glue is to make the melt flow through the stainless steel channel.
Some plastics need to be vented in the injection cylinder to allow the gas to escape, but this gas is mostly air, or it may be the gas released during melting. If the gas is not released, the gas will be compressed by the molten rubber and carried into the mold. , And it will expand and form bubbles in the product. In order to remove the gas before reaching the nozzle or mold, reduce or reduce the diameter of the screw to reduce the melted glue in the injection cylinder.
Here, the gas can be discharged from the upper pot outlet hole or holes. Then the diameter of the screw root is increased, and the volatiles from the outlet of the suitable nozzle are removed. The facility is equipped with an injection molding machine called an exhaust injection molding machine. The injection molding machine above the exhaust gas catalyst burner should have good smoke, a potentially harmful gas removal.
4. Increase the effect of back pressure
Plastics can be melted and mixed by heating to improve quality. The correct screw can be used for proper melting and mixing, and there is sufficient pressure (or back pressure) in the injection cylinder to achieve the consistency of mixing and heat.
Increasing the oil return resistance can produce back pressure in the combustion cylinder, but it takes a while for the screw to reset, so the injection molding machine will produce more consumption. To keep the back pressure insulated from the air as much as possible, the consistency of the melting temperature and the degree of mixing is also required.