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塑料模具加工射出成型需求哪些条件

来源:http://www.sdlqmj.com 日期:2018-12-18 发布人:admin 浏览次数:
塑料模具加工射出成型需求哪些条件
What are the requirements for injection moulding in plastic mould processing
塑料模具,是塑料加工工业中和塑料成型机配套,赋予塑料制品以完好构型和精确尺寸的工具。那麼在塑料模具加工成型的时分需求哪些操作条件,大家理解其中的知识吗。
Plastic moulds, which are matched with plastic moulding machines in the plastic processing industry, provide plastic products with intact configuration and precise size tools. So what operating conditions are needed in the processing and forming of plastic moulds? Do you understand the knowledge?
1.关模压:准绳上应大于塑胶射入模内的总压,以不出毛边爲基准。
1. Mold closing pressure: The total pressure on the criterion should be greater than the total pressure of plastic injection into the mold, based on the absence of rough edges.
2.压力和速度有局部相反的关系作用于模内:目的使原料进入模内能平均、彻底,过量的充溢各角落。
2. Pressure and velocity have a local opposite relationship to act on the mold: the purpose is to make the raw materials into the mold can be averaged, thorough, excessive filling in all corners.
3.温度:原料不同,温度各异,太低溶液胶颜色不均,成品内应力增大。因温渡过低增压过高,能够惹起螺杆断裂。过高产品有毛边,又因冷却发生温差,惹起膨胀,原料会分解、变黄、变色、易断裂,冷却工夫变长,气不容易排出,会有瓦斯气。
3. Temperature: Different raw materials, different temperatures, too low solution gum color is uneven, the internal stress of finished products increases. Because the temperature is too low and the pressure is too high, the screw can be broken. Excessive products have wool edges, and because of cooling temperature difference, causing expansion, raw materials will decompose, yellowing, discoloration, easy to break, cooling time becomes longer, gas is not easy to discharge, there will be gas.
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4.速度:速度的快慢决议原料在模具浇道内及成品中之情况,快有毛边、过饱、烧焦,慢了呈现短射、缩水、结合不良易断等。
4. Speed: The speed decides the situation of raw materials in the runner and finished products, such as burr edge, excessive saturation, burning, short shooting, shrinkage, poor bonding and easy breaking.
5.背压:螺杆在旋转加料时前进之阻力称爲背压,其作用使原料在保送紧缩中愈加严密,能使原料的空气、水份从螺杆后排出,使溶胶中不含影响成品外表的气体成份。
5. Back pressure: Back pressure is the resistance of screw when it is rotating and feeding. Its function is to make the raw material more compact in the conveying and contracting process. It can make the air and moisture of the raw material discharged from the screw, so that the sol does not contain the gas component affecting the appearance of the finished product.
6.模温上下及冷却工夫的长短,影响成品的粘模、缩水、尺寸公差,外表亮度、周期等,应依实践际状况而适时调整,另压克力、PC如成品肉厚时要有模温,才不会发生气泡及应力。
6. Mould temperature and cooling time affect the viscosity, shrinkage, dimension tolerance, appearance brightness and cycle of the finished product. It should be adjusted according to the actual situation. In addition, when the thickness of the finished product is thick, the mold temperature should be used for acrylic and PC to avoid bubbles and stress.
综上所述有济南立强模具有限公司提供,想了解更多山东模具制造厂家知识,欢迎关注我们的网站:http://www.sdlqmj.com谢谢支持!
In summary, all the above-mentioned Jinan Liqiang Mould Co., Ltd. provides, want to know more about Shandong mould manufacturers, welcome to pay attention to our website: http://www.sdlqmj.com, thank you for your support!

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