全自动注肩机合模成型保压机构的设计

论述了全自动注肩机合模成型保压机构的工作原理及设计方法。对模具的结构、合模加压系统的机理和结构作了介绍,讨论了压力调整的可行性。介绍了一种动态过程无后续动力源的模具保压机构。     

920 SEF模切烫金自动机合模机构的设计

根据920 SEF模切烫金自动机合模机构的工作要求,提出了采用对称的曲柄肘杆机构作为920 SEF模切烫金自动机的合模机构;并给出了该曲柄肘杆合模机构结构参数以及工作滑块（动平台）的位移与曲柄（曲轴）转角的数值关系,最后分析和总结了这种合模机构的结构特性.     

塑料中空成型设备锁模机构的一种新设计

介绍了一种塑料中空成型设备的锁模机构的新设计,并对其结构、工作原理和性能进行了分析。该机构对简单化、轻型化中空成型设备的设计,提高模具及锁模机构的使用寿命都具有很好的参考价值。     

REV100注塑-吹塑机非对称合模机构的锁模与调模特性

主要结合REV 100型注塑(射)-吹塑机的三铰点双曲肘合模机构的结构特点,分析、讨论了一种非对称性特殊双曲肘合模机构的机构变形力与移模力的关系,研究了机构锁模条件,油缸推力与合模角关系,机构锁模调模特性及机构工作的特点。     

现代冲压技术与凸模结构的变化

现代冲压技术的发展，引起冲模结构新变化。本文介绍了一些新的凸模结构与机构，从中可以窥视现代模具技术的进展。     

铜合金钥匙级进模设计

中对铜合金钥匙的冲压工艺进行了分析，采用冲孔——落料连续冲压工步级进模进行生产，可明显地提高制件质量及生产率。从而降低生产成本。介绍了铜合金钥匙毛坯的排样图、冲压力及模具压力中心的工艺计算。设计了铜合金钥匙冲孔——落料级进模的模具结构。     

精密注塑机新型合模机构

论述了国内外新型精密注塑机的合模机构,分析了几种液压式合模装置工作原理,特别对电动式合模机构丝杆螺母的具体传动形式进行了比较.在此基础上,设计了中小型注塑机的电液复合式合模装置,包括机构布置和传动形式设计等,探讨了其区别于其他合模机构的精密、高效的优势.这一新型合模机构可满足精密塑料制件的成型要求.     

注塑机合模系统的优化模型研究

连杆式合模机构设计中最优参数的选择是一个很难解决的问题，本文采用现代设计的理论与方法对该形式的合模机构进行优化研究，建立了综合有合模机构的力学特性、运动特性及结构尺寸的多目标优化设计模型，详细分析了该模型的约束要求，并通过算例验证所建模型在实际工程设计中非常有效。     

车灯面罩注射成型的工艺参数优化

运用CAE软件Moldflow模拟了车灯面罩塑料熔体在模具模腔中的流动、保压、冷却过程,预测制品可能发生的翘曲、气穴、熔接痕等缺陷,据此进行了模具结构和注塑工艺参数优化,提高了一次试模的成功率,加快了模具开发进度,进而缩短产品开发周期,提高企业的配套能力和产品质量。     

XS-ZY-120A塑料注射成型机合模装置的设计

介绍了 XS- ZY- 12 0 A型塑料注射成型机合模装置的设计 ,主要包括其主要功能结构、工作原理、模板距离调节机构、推出机构及其液压系统 ,并分析了其优缺点     

手机外壳注塑模具设计

手机外壳外表面要求高,扣位多而尺寸小,结构复杂,是手机模具研制中的关键。运用UG、Auto CAD软件设计一个翻盖手机外壳注塑模具,根据塑件结构,阐述了浇注系统、侧抽芯机构以及顶针与模仁等模具设计要点。侧抽芯机构为该模具设计难点,共设有5个滑块机构和7个单边导滑的斜顶机构。其中,2个滑块机构由斜导柱驱动的定模滑块成型2个内侧转轴孔,这2个滑块共用1个楔紧块。采用一模一腔,三板模结构,共设3个浇口以迅速均匀填充。采用镶块式的组合式型芯模仁以便于加工利于排气。该模具设计思路新颖,在保证塑件成型质量和效率的前提下,简化了模具结构,降低加工和维修难度。     

超高压对草莓浆杀菌效果及微生物菌落形态的影响

研究了超高压对草莓浆的杀菌效果,考察了常温下菌落总数、霉菌、酵母菌数及大肠菌群在处理压强分别为400、500、600MPa,保压时间5～25min时的变化.实验结果表明,大肠菌群为压力敏感型菌,400MPa处理5min后全部杀死;霉菌、酵母菌对压力较为敏感,500MPa处理10min可全部杀死;虽有部分耐压细菌存在,但600MPa处理25min后仅有15～21cfu/g存活,符合国家食品卫生标准要求.同时发现,高压处理后细菌菌落形态发生变化.     

Exploring the problem of mold growth and the efficacy of various mold inhibitor methods during moisture sorption isotherm measurements

ABSTRACT:  Mold growth is a common problem during the equilibration of food materials at high relative humidity values using the standard saturated salt slurry method. Exposing samples to toluene vapor and mixing samples with mold inhibitor chemicals are suggested methods for preventing mold growth while obtaining isotherms. However, no published research was found that examined the effect of mold growth on isotherm performance or the efficacy of various mold inhibitor methods, including their possible effect on the physicochemical properties of food materials. Therefore, the objectives of this study were to (1) explore the effect of mold growth on isotherm performance in a range of food materials, (2) investigate the effectiveness of 4 mold inhibitor methods, irradiation, 2 chemical inhibitors (potassium sorbate and sodium acetate), and toluene vapor, on mold growth on dent corn starch inoculated with A. niger , and (3) examine the effect of mold inhibitor methods on the physicochemical properties of dent corn starch, including isotherm performance, pasting properties, gelatinization temperature, and enthalpy. Mold growth was found to affect starch isotherm performance by contributing to weight changes during sample equilibration. Among the 4 mold inhibitor methods tested, irradiation and toluene vapor were found to be the most effective for inhibiting growth of A. niger on dent cornstarch. However, both methods exhibited a significant impact on the starches' physiochemical properties, suggesting the need to probe the efficacy of other mold inhibitor methods and explore the use of new rapid isotherm instruments, which hamper mold growth by significantly decreasing measurement time.     

纸浆模塑制品生产工艺及其自动生产设备

介绍纸浆模塑制品生产工艺及其自动生产设备。纸浆模塑制品自动生产设备采用吸浆成型和导热油加热定型，用PLC可编程控制器实现了顺序动作循环。设备不仅适合于生产纸浆模塑餐具，还可以适合于生产工业包装制品。     

塑料注射成型机合模部件参数的优选

合模部件是塑料注射成型机的关键部件。文章所提供的合模部件优选参数范围源于生产实践,并经过适当的理性综合而成。它为相关工程技术人员提供了便捷的方法和可靠的保证。     

塑料注射成型充模阶段中熔体流动的研究

采用有限元/有限差分法对薄壁制品注射成型充模阶段的流动进行了数值模拟,得到温度场、速度场及压力场分布;并结合实验结果进行了分析,得到了一些结论。为整个充模过程的控制机理提供理论依据,对控制注射工艺、模具设计有指导意义。     

WRD-Ⅲ型农用杀菌剂的研制

报道了ＷＲＤ—Ⅲ型农用杀菌剂的制备方法及部分试验结果。实验证明该药剂是一种较理想的生物源农药和植物生长调节剂。其原料来源丰富，制作工艺简单，对有关植物病原菌和致病病毒抑制效果好，环境污染小，有较高的开发利用价值     

Evaluation of biopreservatives in Greek yogurt to inhibit yeast and mold spoilage and development of a yogurt spoilage predictive model

Dairy products, including cultured dairy products such as cheese and yogurt, are susceptible to fungal spoilage. Traditionally, additives such as potassium sorbate have been used to control fungal spoilage; however, with consumer demand for clean-label products, other strategies to control fungal spoilage (e.g., biopreservatives) are increasingly being used in dairy formulations. In order to help the dairy industry better evaluate biopreservatives for control of fungal spoilage, we developed a challenge study protocol, which was applied to evaluate 2 commercially available protective cultures for their ability to control yeast and mold spoilage of Greek yogurt. Greek yogurt formulated with and without protective cultures was inoculated with a cocktail consisting of 5 yeasts and 1 mold to yield inoculum levels of 10¹ and 10³ cfu/g of yogurt. The inoculated yogurts were stored at 7°C and fungal counts as well as time to visible growth, on the yogurt surface, of mycelium mold colonies or yeast were determined over shelf-life. Whereas fungal concentrations increased to spoilage levels (≥10⁵ cfu/g) in all yogurt formulations at both inoculum levels by d 23 of storage at 7°C, no surface mold was observed over 76 d in any of the products formulated with protective cultures. Control yogurts without biopreservatives all showed surface mold by d 23. In order to allow industry to better evaluate the business effects of improved control of surface mold growth that can be achieved with protective cultures, we developed a Monte Carlo simulation model to estimate consumer exposure to visible mold growth in yogurt formulated without fungal inhibitors. Our model showed that initial mold contamination rate has the largest effect on the model outcome, indicating that accurate data on contamination rates are important for use of these models. When air plates were used, in a proof-of-concept approach, to estimate initial contamination rates in a small yogurt manufacturing operation, our model predicted that 550 ± 25.2 consumers (±standard deviation) would be exposed to visible mold growth for every 1 million cups of yogurt produced. With initial contamination rate data for individual facilities, this model could be used by industry to estimate the number of consumers exposed to visible mold spoilage and could allow industry to better assess the value of mold-control strategies.     

自动络筒机用金属槽筒及其整体铸造技术

针对自动络筒机用金属槽筒槽形结构非常复杂，国产化难度很大的现状，介绍了整体精密铸造技术，同轴向对开、砂芯与活块相结合的开模方案，解决了花瓶状槽形的倒拔模问题，成功开发了质量符合工艺要求、达国外产品水平的金属槽筒，并形成了小批量生产能力。