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注塑模具是怎样挤压成型制造出塑胶产品的?

来源:    发布时间:2019-05-20 12:04:25    点击:

  自人们踏入制造业社會以后,各种商品的制造都解决了手功工作,智能化的设备制造早已在各个领域获得推广,塑胶产品的制造也不例外,如今的塑胶制品全是运用注塑模具在塑料机内根据注塑加工而成,如人们生活起居中普遍的各种家用电器、电子产品的壳子皆是根据注塑加工而成的,一个完整的塑料产品是如何在注塑机中加工的?
  Since people entered the manufacturing society, the manufacturing of various commodities has solved the problem of hand work. Intelligent equipment manufacturing has already been promoted in various fields, and the manufacturing of plastic products is no exception. Nowadays, all plastic products are processed by injection moulds in plastic machines, such as the shells of various household appliances and electronic products, which are common in people's daily life. It is based on injection moulding. How can a complete plastic product be processed in an injection moulding machine?
  1.加热、预塑化
  1. Heating and Preplasticization
  螺杆是传动系统的驱动,将来自料斗的材料向前输送、压实,在缸外加热器、螺杆和缸的剪切、摩擦的混合作用下,材料逐渐熔融,缸的头部蓄积一定量的熔融塑料,在熔融的压力下螺杆缓慢后退。后退的距离根据计量装置的1次注射所需的量进行调整,达到规定的注射量后,螺杆的旋转和后退停止。
  The screw is driven by the transmission system. The material from the hopper is conveyed and compacted forward. Under the mixed action of shearing and friction of the outside heater, screw and cylinder, the material gradually melts. A certain amount of melted plastic is accumulated at the head of the cylinder, and the screw slowly recedes under the pressure of melting. The distance of retreat is adjusted according to the quantity required for the first injection of the metering device. After reaching the prescribed injection quantity, the rotation and retreat of the screw stop.
  2.合模和锁紧
  2. Closing and locking
  锁模组织促进模版及安裝在动模版上的磨具动模部位与动模版上的磨具动模部位锁模并卡紧,以确保成形时可出示任何的夹持力使磨具卡紧。
  The clamping structure promotes the clamping and clamping of the moving part of the abrasive tool and the moving part of the abrasive tool installed on the moving part of the template, so as to ensure that any clamping force can be shown to clamp the abrasive tool during forming.
  3.注射装置前移
  3. Move the injection device forward
                         济南模具
  当合模完成后,整个注射座被推动,前移,使注射机喷嘴与模具主浇道口完全贴合。
  When the clamping is completed, the whole injection seat is pushed forward to make the injector nozzle fully fit with the main runner of the mould.
  4.注射、保压
  4. Injection and Pressure Maintenance
  在锁模和喷嘴完全贴合模具以后,注射液压缸进入高压油,推动螺杆相对料筒前移,将积聚在料筒的头部的熔体以足够压力注入模具的型腔,因温度降低而使塑料体积产生收缩,为保证塑件的致密性、尺寸精度和力学性能,需对模具型腔内的熔体保持一定的压力,以补充物料。
  After the clamping die and the nozzle are fully fitted to the mould, the injection cylinder enters the high-pressure oil, pushes the screw forward relative to the barrel, injects the melt accumulated at the head of the barrel with sufficient pressure into the cavity of the mould, and shrinks the plastic volume due to the decrease of temperature. In order to ensure the compactness, dimensional accuracy and mechanical properties of the plastic parts, it is necessary to maintain a certain pressure on the melt in the cavity of the mould. Supplementary materials.
  5.卸压
  5. pressure relief
  当模具浇口处的熔体冻结时,即可卸压。
  When the melt at the gate of the die freezes, the pressure can be relieved.
  6.注射装置后退
  6. Back-off of injection device
  一般来说,卸压完成后,螺杆即可旋转,后退,以完成下一次的加料、预塑化过程。(现有注塑一般情况下,注射座撤离模具主浇口这一动作已取消,对成型流涎比较严重的材料比如PA时执行此动作)。
  Generally speaking, after pressure relief, the screw can rotate and retreat to complete the next feeding and pre-plasticizing process. (In general, the action of withdrawing the injection seat from the main gate of the mould has been cancelled in the existing injection moulding, and this action is performed for the materials with serious salivation, such as PA).
  7.开模、顶出塑件
  7. Opening and ejecting plastic parts
  模具型腔内的塑件经冷却定型后,锁模机构开模,并且推出模具内的塑件。
  After cooling and finalizing the plastic parts in the mould cavity, the clamping mechanism opens the mould and pushes out the plastic parts in the mould.
  自此,一个完整的塑胶产品便算完成了,当然大多数的塑胶件后续还会需要经过喷油、丝印、烫金、镭雕等等辅助工艺,再与其他的产品组装在一起,最后形成一个完整的产品,才会最终到了消费者的手中。济南宏捷模具有限公司有压铸,模具两大车间,车间内有大型压铸设备。喷砂机,数控车床,加工中心,注塑机,线切割,电火花,铣床,磨床,摇臂钻等先进设备和经验丰富的技术人员。是专业的济南模具厂家。
  Since then, a complete plastic product has been completed, of course, most plastic parts will need to be sprayed, screen printing, bronzing, radium carving and other auxiliary processes, and then assembled with other products, and finally form a complete product, which will ultimately reach the hands of consumers. Jinan Hongjie Mould Co., Ltd. has two workshops: die-casting and die-casting. There are large-scale die-casting equipment in the workshop. Sandblasting machine, CNC lathe, processing center, injection molding machine, WEDM, EDM, milling machine, grinder, rocker drill and other advanced equipment and experienced technicians. Jinan Mold Factory is a professional manufacturer.
 
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