We always encounter some problems when using the injection molding machine to make Daily Necessities Mould(FURNITUREMOULD). Today we mainly talk about the difficulty of removing the gate and the solution of the bending of the moving plate. 1. It is difficult to remove the gate During the injection molding process, the gate is stuck in the sprue bushing and is not easily peeled off. When the mold is opened, the product is cracked. In addition, the operator must use the tip of the copper rod to knock out from the nozzle, so that it can be released after being loosened, which seriously affects the production efficiency. The main cause of this failure is the poor smoothness of the gate cone and the presence of tool marks in the circumferential direction of the bore. Secondly, the material is too soft. After a period of use, the small end of the tapered hole is deformed or damaged, and the spherical curvature of the nozzle is too small, so that the gate material produces a rivet head here. The taper hole of the sprue sleeve is difficult to process. Standard parts should be used as much as possible. If you need to process it yourself, you should also make a special reamer. The taper hole needs to be ground to below Ra0.4. In addition, a gate pull rod or gate ejection mechanism must be provided. 2. Moving template bending When the daily necessities mould is injected, the molten plastic in the cavity produces a huge back pressure, generally 600 ~ 1000 kg / cm 2 . Daily necessities mould makers sometimes do not pay attention to this problem, often change the original design size, or replace the moving template with low-strength steel plate. In the daily necessities mould with top bar topping, due to the large span of the two sides, the injection time The template is bent down. The moving template must be made of high-quality steel. It must have sufficient thickness. It is not allowed to use low-strength steel plates such as A3. If necessary, support columns or support blocks should be placed under the moving plate to reduce the thickness of the template and improve the carrying capacity. Click Household Product Mould to learn about more information.
