微成型领域的关键技术

介绍了微成型技术产生的背景，探讨了微成型技术与常规注射成型技术的区别与联系，阐述了微型注塑机、微型模具制造等技术的特点，以及各成型工艺参数对塑件成型质量的影响和控制措施。     

微结构注塑机注射单元的单曲肘机构的研究

微结构注塑机要求塑化均匀、计量和注射精密,故对注射单元的设计至关重要。本文介绍了微结构注塑成型制品的特点及其对注塑成型设备的特殊要求,分析比较了目前用于微结构注塑机的注射单元的优缺点。在此基础上,提出了单曲肘机构作为注射单元的思想,系统计算出了单曲肘机构的运动和受力特性,利用仿真软件ADAMS建立了单曲肘注射单元结构模型。     

差动传动式微型注塑机注射系统的设计与开发

在对国内外微型注塑成型机的注射系统进行分析的基础上,提出了结构简单、制造成本较低的差动传动式微型注塑机的注射方法;基于差动传动的注射原理,设计差动传动的微型注塑机的注射装置,并开发相应的控制原理和流程;分析计算了注射系统的功率和相关参数,为解决微注塑过程中难以控制微小注射量和注射精度的问题提供了新途径。     

微注射成型工艺及装备研究进展

阐述了微注射成型技术的研究进展,比较了微注射成型技术与传统注射成型技术的不同要求,重点分析了微注射成型工艺及其装备的主要特点及研究现状,并基于熔体微分原理,提出了具有自主知识产权的微分注射成型技术及装备。发现采用微分注射成型创新技术,可以用1台微分注射成型装备达到多台微型注塑机的效果,最终实现微塑料制品高效率、低成本、大批量的生产。     

威猛巴顿菲尔为亚洲注塑市场注入新活力

在展会中,威猛巴顿菲尔机械设备（上海）有限公司（以下简称“威猛巴顿菲尔”）将凭借PowerSeries系列的两款机器,展示其在注塑机领域中的强大竞争实力。所展示的产品将是一台EcoPower系列全电动注塑机和一台专为实现微型部件和纳米级部件的高精密注塑成型而设计的MicroPower微型注塑机。同时,     

微量注塑机的现状与发展趋势

微注射成型技术是微结构零件最主要的成型方式,受到了人们高度重视,微结构零件迅速发展对微量注塑机带来了新的挑战。阐述了微注射成型技术的产生背景,分析了微注射成型技术对注射设备的特殊要求,从微量注塑机的螺杆式、柱塞式和螺杆柱塞混合式塑化与注射单元机构和液压、电动和电液复合驱动方式等方面介绍了当前微量注塑机的发展现状并比较了它们的优缺点,分析了微量注塑机面临的挑战并展望了微量注塑机的发展趋势。     

四缸直锁二板式注塑机及精密注射成型关键技术

本文从注塑机锁模结构的角度分析精密注塑成型的关键技术，并通过广东泓利机器有限公司研制的四缸直锁二板式注塑机在光盘注塑机的成功应用，提出精密、超精密注塑成型的一些重要技术指标，为以后精密、超精密注射成型技术概念的形成和标准的制定提供参考。     

四缸直锁二板式注塑机及精密注射成型关键技术

本文从注塑机锁模结构的角度分析精密注塑成型的关键技术,并通过广东泓利机器有限公司研制的四缸直锁二板式注塑机在光盘注塑机的成功应用,提出精密、超精密注塑成型的一些重要技术指标,为以后精密、超精密注射成型技术概念的形成和标准的制定提供参考。     

微分注射成型微型齿轮的实验

介绍了现有微注射成型机的特点,基于高分子材料微积分方法研制成功全电动微分注塑机,利用该微分注塑机成功注射成型平均质量仅为0.0116 g的精密微型齿轮。同时设计了正交试验探究不同工艺参数对制品成型质量的影响权重,研究成果为进一步提高微注射成型效果提供了一定理论基础。     

微注射成型与微分注射成型技术

综述了国外微注射成型设备的发展历史,国内微注射成型设备的最新进展以及国内学者在微注射成型基础理论领域的研究进展,对现有微注射成型技术进行了系统地比较;提出了一种微型制品成型的新技术--微分注射成型技术,阐述了基于熔体泵的微分注射成型的成型机理,提出了一种利用常规注塑机进行微制品高效注射成型的实施方法。     

Development of a multimicroinjection molding system for thermoplastic polymer

A novel concept of microinjection molding system was designed and presented. The system was designed as a multimicroinjection module, which is matched with a vertical injection molding machine (IMM) and can be applied on commercial IMMs. A planetary gear pump was integrated in this system to complete the multi microinjection molding (MμIM). The module is fixed between the stationary platen and the mold of IMM. The plasticizing unit of the IMM provides the melt and initial pressure for the multi microinjection molding system. With this system, a commercial IMM could be upgraded to a precise microinjection machine and has the capability of precise metering for the microinjection molding. Melt flowing behavior was predicted through the 3D injection molding simulation and experiments were carried out to testify the performance of the MμIM. The injection molding performance was evaluated and the results revealed that the MμIM system could effectively realize the microinjection molding. POLYM. ENG. SCI., 2012. © 2012 Society of Plastics Engineers     

Effect of injection speed on the mechanical properties of isotactic polypropylene micro injection molded parts based on a nanoindentation test

Isotactic polypropylene micro parts were molded at different injection speeds by microinjection molding. The morphology and micro structure were characterized by a polarizing microscope, and the mechanical properties of differently structured layers were characterized by nanoindentation experiments. The influence of injection speed on the nanoindentation mechanical properties of each structural layer of the micro parts was analyzed. The results showed that the mechanical properties of different layers were different, the modulus and hardness of the position near the core layer were largest, and the modulus and hardness of the position near the skin were smallest. It is compelling that the modulus and hardness of each layer decreased first and then increased as the injection speed increased under a higher melt temperature (240 °C). Meanwhile, the opposite trend was observed at a lower melt temperature (220 °C). This phenomenon can be attributed to the competitive mechanism of the shear heat effect and the disorientation effect. In addition, injection speed had a greater influence on the nanoindentation mechanical properties in the perpendicular direction than in the flow direction. This work systematically explored the relationship between the microstructure and the local mechanical properties, which can provide new insights for microinjection molding design in the future. © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019 , 136, 47329.     

电动注塑机与液压注塑机共创注塑机新发展

分析电动注塑机的发展现状及性能优势,比较电动注塑机与液压注塑机两者在结构、注射成型范围等方面的技术特点,指出液压注塑机应向多功能、多品种方向发展,并且应注重节能技术;电动注塑机应向高附加值的精密注塑机方向发展。     

Effect of rapid mold surface inducting heating on the replication ability of microinjection molding light‐guided plates with V‐grooved microfeatures

This study applies a magnetic induction heating method for rapid and uniform heating of a mold surface for injection molding of 2‐inch light‐guided plates (LGPs). Mold temperature is an important process parameter that affects microinjection molding quality. This research investigates the effects of high‐mold surface temperature generated by induction heating in enhancing the replication rate of microfeatures of LGPs. This study has three stages. First, an appropriate power rate setting is determined for induction heating and injection molding process window. Second, all key parameters affecting microfeature quality are identified to determine the optimum LGP micromolding parameters using the Taguchi and ANOVA methods. Third, the quality of microfeature heights and angles are experimentally verified. Polymethyl methacrylate was molded under various injection molding conditions to replicate an electroformed nickel stamper with V‐grooves 10 μm in width and 5 μm in depth. In this investigation, injection speed was set in the conventional range. Experimental findings indicate that instead of high‐mold temperature, the combination of low mold temperature and high surface temperature obtained using induction heating improve replication quality and reduce cycle time. © 2010 Wiley Periodicals, Inc. J Appl Polym Sci, 2010     

注射成型技术进展

介绍了注射成型工艺,注射成型机的一些新进展,重点介绍了气体辅助注射成型,微孔泡沫塑料注射成型,挤出和注射成型组合的直接成型技术及多组分注射成型的特点,同时介绍了电动注射成型机,无拉杆注射成型机和PET注射成型机。     

Using polymer compounds in place of metal material to make cost‐effective parts

The use of plastic materials in place of metals is attractive because of their versatility and ease of batch fabrication, which reduces costs. This article investigates the possibility of using nylon compounds in place of metal materials to make cost‐effective parts through microinjection molding. Experimental results showed that the plastic parts were well formed with high accuracy and reproducibility through microinjection molding. The average tolerance in the dimensions of the plastic parts was less than 20 μm. The resulting composites with 15 wt % carbon particles exhibited the optimum improvement in accuracy, reproducibility, and wear resistance. In addition, the wear loss of the metal parts without lubrication was 4–10 times higher than that of the polymer compounds. The results revealed that the ball‐screw plates made with nylon compounds exhibited high accuracy, reproducibility, and wear resistance, could be produced at low cost, and they could successfully replace S316 metal parts in microinjection molding. © 2006 Wiley Periodicals, Inc. J Appl Polym Sci 102: 1645–1652, 2006     

微注射成型聚合物熔体流变和充填性能研究进展

介绍了影响微注射成型过程中流变和充填性能的主要因素,重点综述了近年来国内外关于这些影响因素的相关研究情况及进展,同时对该领域今后发展趋势和研究热点进行了展望。     

The morphology evolution and crystallization behavior of microinjection molded polyoxymethylene/molybdenum disulfide nanocomposite

Microinjection molding was carried out on polyoxymethylene (POM)/molybdenum disulfide (MoS₂) nanocomposite prepared by solid state shear milling (S³M) technology. The morphology evolution and crystallization behavior were then investigated under different conditions of mold temperature and injection speed. The comparison between the microinjection molded micropart with conventional injection molded macropart was also conducted. Results showed that the higher mold temperature could improve the filling property and replication quality. The MoS₂ particles played a heterogeneous nucleation role and remarkably affected the crystallization process of POM. Meanwhile, the crystallization orientation and skin‐core structure induced by the shear stress presented the similar evolution tendency under different microinjection conditions. The multi‐melting behaviors of microparts occurring under different microinjection conditions were attributed to the formation of shish‐kebab structures. The increase of crystallinity and the reduction of mechanical property occurring in macropart are related to its crystallization morphology formed, which is different from that of micropart. The results of this work would lay a foundation for preparation of POM/MoS₂ transmission microparts with good comprehensive performance. © 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017 , 134, 44625.     

诱导式全电动注塑机电控系统设计

使用特制的诱导电机和有效的过程控制技术,开发出了性能价格比高的诱导式全电动注塑机。介绍了诱导式全电动注塑机电控系统的工作原理和主要组成部分。诱导式全电动注塑机相对于油压式注塑机而言,在环保、节能和性能方面有着独特的优势,且比永磁全电动注塑机价格低。