Analysis and Structure Optimization of the Wind Distribution of Nozzle in the Gravure Printing Drying System

2015 ◽  
Vol 731 ◽  
pp. 411-415
Author(s):  
Xin Zheng ◽  
Yan Fei Gao
Keyword(s):  
Simulation Analysis ◽  
Structure Optimization ◽  
Hydrodynamic Theory ◽  
Air Distribution ◽  
Gravure Printing ◽  
Heated Air ◽  
Drying System ◽  
Wind Distribution ◽  
Printing Machine ◽  
Crosswind Landing

The drying system plays an important role in printing speed and energy consumption of gravure printing machine. Nozzle is a factor which decides heated air distribution in drying system finally. This research makes a model for the structure of nozzle and takes a numerical simulation analysis of heated air field with hydrodynamic theory. The defect of structure is found through the distribution of velocity, temperature and trajectories. A crosswind landing area is added around outlet area of nozzle. In this study, it is evaluated that the distribution of the wind field. It is found that the velocity and pressure of heated air in the vortex area between substrate and nozzle by the cross-wind board can be improved from the simulation results. The study has significance on optimizing the structure of nozzle and improving efficiency of drying system.

Analysis and Optimization of Hot Air Drying Device of a Gravure Printing Machine Based on Fluid Analysis

2011 ◽  
Vol 121-126 ◽  
pp. 2517-2521 ◽  
Author(s):  
Lin Lin Liu ◽  
Jian Liu ◽  
Xiao Yan Zhang ◽  
Shan Shan Zheng
Keyword(s):  
Fluid Dynamics ◽  
Simulation Analysis ◽  
Paper Analysis ◽  
Utilization Efficiency ◽  
Gravure Printing ◽  
Analysis Model ◽  
Fluid Analysis ◽  
Hot Air ◽  
Cfd Method ◽  
Printing Machine

in this paper, analysis of the fluid dynamics was carried out on hot air in drying mechanism of a gravure printing machine by applying the fluid dynamics and aerodynamics theories. The kinematical equation and the kinetic equation were established respectively and the RNG model was added according to flowing conditions of hot air. The CFD analysis model was established by adopting the computational fluid dynamics (CFD) method to implement dynamic simulation analysis on air hot in the drying mechanism. Uniformity of drying was improved through adding clapboard and a flow guide plate to optimize the structure of air nozzles, so that the hot air convolutes for multi times on substrate and the utilization efficiency was increased.

Based on the CFD Technologys Negative Pressure Chamber Air Flow Field Simulation Analysis of the Aspiration Drum Precision Seeding Mechanism

2013 ◽  
Vol 706-708 ◽  
pp. 1226-1230
Author(s):  
Yan Jing Wang ◽  
Zu Li Zhang ◽  
Yun Ze Jiang
Keyword(s):  
Flow Field ◽  
Negative Pressure ◽  
Optimization Design ◽  
Simulation Analysis ◽  
Structure Optimization ◽  
Pressure Chamber ◽  
Air Distribution ◽  
Ansys Fluent ◽  
Material Resources ◽  
Icem Cfd

Through using the ICEM CFD software , we make a model and mesh division to one of the aspiration drum precision seeding mechanisms negative pressure chamber. And we reuse software ANSYS FLUENT to make simulation analysis of the negative pressure chamber for flow field . The conclusion reflects the distributor in the suction of air distribution in the process of the situation correctly. That provides references for distributor structure optimization design, and provides the guidance for experiment so as to save manpower, material resources and the time.

Uniform Heating Device for a Paper Mill Process

2009 ◽  
Author(s):  
Krishna Guntur ◽  
R. S. Amano ◽  
Brinda Athreya
Keyword(s):  
Paper Mill ◽  
Drying Process ◽  
Paper Mills ◽  
Conveyor System ◽  
Hot Air ◽  
Heated Air ◽  
Drying System ◽  
Forced Air ◽  
Drying Conditions ◽  
Mill Process

Paper mills use elaborated drying process using hot rollers to dry the paper. In the recent past, use of hot air for drying has gained some interest. The main disadvantage of this method is non-uniform air temperature, which will cause lateral shrinkage of the paper. This paper discusses a new drying system. The process incorporates a porous medium to ensure uniform temperature by flattening the velocity distribution. The new system requires less equipment pieces and utilized less space for the drying process. A cloth is used in place of paper to increase the repeatability of the experiment. This experiment utilized a conveyor system to transport the cloth within the heater section. Variables concerning velocity and temperature values of the heated air, and heater intensity were adjusted to produce the different drying conditions. Forced air propane heater was used as the heat source. Design modifications were made so that the heater is more suitable for this process. The results showed significant improvement of the velocity and feasibility of extending this technology to the actual scale.

Research on Friction between Gravure Roller and Scraping Blade

2013 ◽  
Vol 469 ◽  
pp. 399-403 ◽  
Author(s):  
Jian Dong Lu ◽  
Gai Mei Zhang ◽  
Lian Fang Li
Keyword(s):  
Qualitative Research ◽  
Gravure Printing ◽  
Blade Angle ◽  
Machine Vibration ◽  
Printing Quality ◽  
Run Time ◽  
Printing Machine ◽  
Printing Speed

A variety of friction exists during gravure printing machine run-time. The friction between gravure roller and scraping blade has a great effect on the printing quality and gravure printing endurance. In this article, the friction between gravure roller and scraping blade is studied from the micro-contact perspective. The qualitative research of the factors that affect the friction between gravure roller and scraping blade is done, in order to confirm the effect law of the printing speed, scraping blade angle and gravure printing machine vibration on the friction between gravure roller and scraping blade.

Research on Dynamics Simulation of Buffering Process of Docking Mechanism

2014 ◽  
Vol 701-702 ◽  
pp. 748-752
Author(s):  
Yuan Zhang ◽  
Li Li Zhou ◽  
Jian Wang ◽  
Chang Zhen Fan
Keyword(s):  
Mathematical Modeling ◽  
Dynamic Simulation ◽  
Simulation Analysis ◽  
Structure Optimization ◽  
Working Life ◽  
Dynamics Simulation ◽  
Buffer System ◽  
Factors Influencing ◽  
Docking Mechanism ◽  
Important Basis

On-orbit service technology can extend the working life of the spacecraft, and improve the ability to perform various tasks. Docking mechanism is the key equipment of the space docking. The cushion performance of the system determines the dynamic characteristics in the docking process, and it is one of the important factors influencing the docking success or not. It is established that mathematical modeling of the new grasping mechanism in the buffering process, due to lack of the experiment equipments, the dynamic simulation on computer is an effective method to test and verify the parameters or evaluate the performance of the buffer system designed. Simulation analysis is conducted to get the corresponding buffer force for four different sets of buffer parameter, and it provides important basis for docking cushioning structure optimization.

Research on Energy Consumption Test and Data Process Method of Gravure Printing Machine

2015 ◽  
Vol 738-739 ◽  
pp. 854-857
Author(s):  
Jian Jun Bai ◽  
Yi Ming Wang ◽  
Ying Cai Yuan
Keyword(s):  
Energy Consumption ◽  
Energy Balance ◽  
High Speed ◽  
Electric Energy ◽  
Test Method ◽  
Gravure Printing ◽  
Balance Test ◽  
Data Process ◽  
Three Phase ◽  
Printing Machine

In order to achieve high-speed gravure printing machine energy consumption tested and analyzed process efficiently, put forward a kind of electric energy balance test and analysis method, using power analyzer acquire and record the electric energy balance parameters of motors input ports of the three-phase power supply, and processing the data with the method of successive difference. By means of experiment, tested and analyzed the main motor energy consumption of gravure printing machine, the results verify the feasibility of electric energy balance test method and the method of successive difference.

Application of Virtual Prototyping Technology on Kinematical Simulation of Baler Compression Device

2012 ◽  
Vol 591-593 ◽  
pp. 644-647
Author(s):  
Xue Fei Zheng ◽  
Bi Wen Li ◽  
Ying Zhang
Keyword(s):  
Simulation Analysis ◽  
Virtual Prototyping ◽  
Three Dimensional ◽  
Structure Optimization ◽  
High Density ◽  
Digital Model ◽  
Compression Device ◽  
Virtual Prototyping Technology ◽  
Kinematical Simulation

Compression device is the important mechanism of baler. This paper uses the virtual prototyping technology. It analyzes the function of compression device in 9KG-350 high density baler and the three-dimensional digital model of compression device is obtained based on UG package .Then the model is put into ADAMS, and a kinematical simulation analysis is performed. Through the simulation, the whole kinematical process is reflected, gaining the relative kinematical curves of compression device as well. The results can be help in study the design of baler and the structure optimization.

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