全自动吹瓶机

一种全自动吹瓶机，包括机架、安装瓶坯座并可作间歇运动的公转链条、上料装置、上坯机构、预热烘道装置：将瓶坯从公转链条上的瓶坯座转移到抓坯机械手的退坯机构，使各部件协调动作的控制装置。吹瓶机构设置在公转链条之外；吹瓶机构包括分别位于该退坯机构两侧的第1、第2吹瓶机构；2个吹瓶机构的吹瓶工位与退坯机构的退坯工位的距离相等；     

一种新型压铸或注塑设备

一种新型压铸或注塑设备，包括机架和在机架上设置的锁模机构。所述的机架和锁模机构之间设置自动传送机构，从锁模机构脱模出来的产品经该传送机构传送到设备尾部。在压铸或注塑设备尾部设置容器，用于盛放产品。传送机构包括一主动轴和一从动轴，在主动轴和从动轴之间张设环形传动带，主动轴由电动马达带动旋转，从而使传动带运动，进行产品的传送。     

论安全评价机构的系统化建设与管理

安全评价机构是一个特殊的系统,其建设和管理可以采用系统化的原理和方法进行分析。文章从部门设置、人员结构、过程控制和技术支撑四个方面对安全评价机构的系统化建设与管理进行了一些探讨,建议从系统化的观点和方法入手,建设与管理安全评价机构,更好地为我国企业的安全生产服务。     

塑料扎带自动绑扎线束的设备

本发明的塑料扎带自动绑扎线束的设备,包括底座、电机固定机构、推送机构、助推机构、闭合控制机构、拉紧机构和剪切机构;电机固定机构用于固定电机;推送机构设置在底座的一侧,用于将塑料扎带尾部推送到达卡紧槽;助推机构安置在底座的前部,与助推电机连接,用于将塑料扎带头部推送至穿过塑料扎带尾部;     

专利文摘

一种塑料管的自动定位加工模具 本实用新型涉及一种塑料管的自动定位加工模具,包括模体、固定机构、限位机构和接头机构。模体上设有至少一条塑料管通道和一流道,塑料管通道的底端设有一接头型腔,且该流道与接头型腔连通。固定机构设置在塑料管通道上,限位机构设置在塑料管通道的底端,接头机构设置在接头型腔的下方,以封住塑料管的管口。     

ISO9001：2000标准条款在卫生陶瓷产品制造和服务过程中的应用

1 5.5.1职责和权限 ISO9001标准(以下简称标准)要求"最高管理者应确保组织内的职责、权限得到规定和沟通",任何部门,任何岗位开展工作的首要前提是知道自己的职责,即做什么?否则更谈不上怎么做了?因此组织应明确规定各部门各岗职责,而且所赋予的职责要与企业的组织机构设置相适应,允许一个萝卜多个坑,即一个机构、一个岗位可以承担多项职责,但绝不允许,同一项职能职责由多个部门或岗位承担,除非把该职责分解成多项小职责来由多个部门或岗位承担.     

“蓝领双证工程”管理模式的实践与研究

本文从四个方面对"蓝领双证工程"的管理模式进行了探索,在实践的基础上提出:健全机构、权责明确是基础;设置专业、设计课程是前提;建立机制、强化激励是关键;校企合作、健全制度是保证.意在通过探索,为推动"蓝领双证工程"健康发展尽微薄之力.     

发挥化院优势,创办市场营销专业特色

本文从目前高等院校中市场营销专业设置的状况、我院市场营销专业现状、发挥优势创办市场营销专业特色三个方面进行论述,阐明内蒙古化工职业学院创办市场营销专业的特色方案。     

一种塑料薄膜的整平装置

正本发明公开了一种塑料薄膜的整平装置,包括设置在吹膜机出料口一侧的操作台,操作台上侧距吹膜机由近及远依次设有支撑机构、压紧机构、整平机构,吹膜机出料口、支撑机构、压紧机构、整平机构位于同一直线上,支撑机构包括两个对称设置的第一立板,两个第一立板之间通过转轴转动连接有支承辊,压紧机构包括两个对称设置的第二立板,两个第二立板之间通过第一连接轴转动连接有压紧辊。本发明通过可调节高度的压紧辊和整平辊的设置,     

中国轮胎循环利用协会召开会长办公扩大会议

2021年1月7日上午,中国轮胎循环利用协会(简称:协会)会长办公扩大会议通过腾讯会议方式召开。会议的主要议题有"总结秘书处各部门2020年度工作"、"研究2021年度各分支机构重点工作"、"研究决定协会秘书处机构设置方案"、"研究‘第二届轮胎(橡胶)循环利用国际合作会议’及‘中国轮胎资源循环利用协会第34次年会’实施方案"等。     

E.p.r. study of molecular phases in coal

E.p.r. spectra from coals of various carbon content are reported. The e.p.r. signal from coals in a vacuum consists of two lines with different widths. The results are interpreted using the Larsen-Kovac structural model (Am. Chem. Soc. Div. Fuel Chem. Preprints 1977, 22, 181). The paramagnetic centres, disposed in the macromolecular phase, give a narrow line whereas the spins of the molecular phase are responsible for the broad line. These results provide a good interpretation of the changes in e.p.r. signal-shape under the influence of various organic solvents observed by Yokokawa (Fuel 1968, 47, 273; Fuel 1969, 48, 29).     

N.m.r. studies of molecular motion in modified polypropylene

N.m.r. proton spin-lattice relaxation measurements were performed on modified polypropylene at 88 MHz over a wide range of temperatures. The modification by ethylene acrylate copolymer produced compatibility between the polymer fibres and the dyestuff molecules. The influence of the modifier on the segmental motion and on the methyl group relaxation regions was studied, and a slight shift of the high frequency glass transition to lower temperatures and a change in the form of T₁ minima were found. Both effects are discussed in terms of a qualitative n.m.r. relaxation model.     

Diffusion of stabilizers in polymers. I. 2,4-dihydroxybenzophenone in polyolefins

The diffusion of the ultraviolet stabilizer 2,4-dihydroxybenzophenone in compressionmolded sheets of low-density polyethylene, high-density polyethylene, and isotactic polypropylene was investigated over the temperature range of 44–75°C. The magnitude of the diffusion coefficients for these polyolefins was found to decrease in the order low-density polyethylene > high-density polyethylene > polypropylene, the corresponding activation energies being approximately 18, 23, and 34 kcal/mole. Studies under conditions of saturation indicated that the migration of this stabilizer was confined to the more accessible amorphous regions of the polymers. The rate of loss of stabilizer from polymer samples immersed in water was also investigated at 44°C. Values of the diffusion coefficients calculated from the results of these studies were somewhat greater than those determined from the diffusion studies for the low-density polyethylene and isotactic polypropylene samples and considerably smaller in the case of high-density polyethylene. The extraction studies also permitted the quantitative evaluation of the solubilities of the stabilizer in the polymers. These were found to be 0.003, 0.03, and 0.07 wt-% for high-density polyethylene, low-density polyethylene, and polypropylene, respectively, at 44°C.     

H.p.l.c. quantitation of hydrocarbon class types in cracked products

H.p.l.c. was optimized to obtain quantitative compositional data on hydrocarbon class type (saturates, olefins, aromatics plus polars) in cracked products from vacuum gas oil (370–500°C) feed over REY zeolite catalyst in a micro-activity test unit. H.p.l.c. separation was achieved using an amino column, a backflush device and nC₆ as mobile phase. An RI detector was used to obtain total saturates and aromatics and a 200 nm u.v. detector to estimate olefins and aromatic hydrocarbons by ring number. Quantitation was achieved using external standard procedure and standards were prepared from the identical petroleum products to obtain response factors. A considerable variation in the liquid product yield during cracking reactions was noticed, from 40 to 70 wt%. Cracking reactions were also favoured through hydrogen transfer, increasing substantially the aromatic content in the range 50–70 wt%. Olefins were also formed during cracking, ranging from 5 to 10 wt%.     

U.K.A.E.A. northern division studies of the radiolytic oxidation of graphite in carbon dioxide

The radiolytic oxidation of graphite in carbon dioxide cooled nuclear reactors is of great practical importance, but direct measurements of the oxidation of pores are very difficult. Progress has recently been made by studying the changes in permeability of graphite and the diffusivity ratio with oxidation in carbon dioxide with carbon monoxide and methane additives because these measurements provide several direct measures of pore size. The satisfactory modelling of these properties has encouraged application of the same model to carbon deposition in the graphite pores and to the weight loss. The initial application of the model to one graphite has been extended to other graphites successfully. The changes in Young's modulus, thermal resistivity and strength have been found to be independent of the oxidation inhibitors for a given weight loss and apparently independent of the type of graphite—a highly useful result, but very surprising.     

Mercerization of cellulose. III. Changes in crystallite sizes

When cellulose is mercerized slowly, the initial conversion is from the cellulose I crystal structure to that of Na–cellulose I. The conversion is a crystal-to-crystal phase transformation, without passage through an amorphous state. The analysis of crystallite sizes of cellulose I and Na-cellulose I during this transformation has shown that the process takes place in two steps. The first is a rapid step, occurring in approximately 1/7 (or less) of the total conversion time, resulting in a conversion ratio of ca. 65%. The measured crystallite sizes of both cellulose I and Na–cellulose I remain constant during this stage, at ～ 62 and ～ 35 Å, respectively. In the following slow step, complete conversion to Na–cellulose I takes place, and the crystallite size of cellulose I decreases steadily until disappearance. The crystallite size of Na–cellulose I increases steadily at the same time, to a final value of ～ 50 Å. Simultaneously, the unit cell parameters of cellulose I change significantly. The observation of a two-step conversion is consistent with a proposed mercerization mechanism in which the conversion is assumed to begin in the amorphous phase of the cellulose fiber.