Optimization Design for MA5300 Injection Molding Machine’s Clamping Unit’s Hydraulic System

2013 ◽  
Vol 321-324 ◽  
pp. 1770-1774
Author(s):  
Jing Wang ◽  
Zheng Cai Wang ◽  
Li Ying Xue ◽  
Li Zhu Liu
Keyword(s):  
Injection Molding ◽  
Hydraulic System ◽  
Optimization Design ◽  
Response Speed ◽  
Control Circuit ◽  
Hydraulic Control ◽  
Hydraulic Circuit ◽  
Magnetic Exchange ◽  
Oil Source

Focusing on PET perform molding features, working principles of MA5300 Injection Molding Machine’s clamping unit’s hydraulic system has been analyzed in this paper. Based on previous hydraulic system, magnetic exchange valve has been added on the demoulding hydraulic circuit, demolding speed has been fastened; energy accumulator has been added on the control circuit so as to stabilize controlled oil-source, improve time of opening and clamping mould and response speed. In addition, common one-way valve in core oil circuit is replaced with hydraulic control one-way valve, in order to realize pressure maintaining function; hydraulic insurance structure is changed into inner circulation, and two-way cartridge valve is used as security valve, so as to realize faster response, and largely improved equipment security. Through adopting common hydraulic components, under the premise of limited increasing cost, the injection molding cycle for PET perform product has been reduced, and enterprise’s productivity has been improved.

Study on Hydraulic Circuit Simulation Based on MSC·EASY5 for the Arm of Excavator

2011 ◽  
Vol 291-294 ◽  
pp. 2281-2286
Author(s):  
Li Rong Wan ◽  
Yun Qing Gong ◽  
Cheng Long Wang
Keyword(s):  
Performance Analysis ◽  
Hydraulic System ◽  
Optimization Design ◽  
Circuit Simulation ◽  
New Product ◽  
Hydraulic Cylinder ◽  
Hydraulic Circuit ◽  
Graphical Modeling ◽  
Simulation Based ◽  
Overall Performance

In this paper, a hydraulic excavator is used as an example, and a model of the hydraulic circuit of the excavator arm is established using the graphical modeling method of EASY5. Through the simulation and analysis of the results, it can be seen that the simulation results can accurately simulate the dynamic characteristics of actual hydraulic circuit, and show the variation of the pressure in the hydraulic cylinder chambers. It not only provides a basis for the system performance analysis and the further improvement, but also provides a new method for the optimization design and overall performance analysis of the engineering machinery hydraulic system. And it also provides a new idea of design for the development of new product.

Hydraulic Control of Speed and Position of a Pneumatic Actuator

2015 ◽  
Vol 772 ◽  
pp. 334-338
Author(s):  
Mihai Avram ◽  
Constantin Bucşan ◽  
Despina Duminică ◽  
Dana Rizescu ◽  
Daniel Besnea
Keyword(s):  
Mathematical Model ◽  
Numerical Simulations ◽  
Hydraulic System ◽  
Experimental Results ◽  
Pneumatic Actuator ◽  
Hydraulic Control ◽  
Hydraulic Circuit

The paper presents an original pneumo-hydraulic system that controls the speed and the position of the actuated load by using a hydraulic circuit containing a hydraulic proportional throttle. A mathematical model of the solution is developed and numerical simulations are performed. The experimental results obtained on the built model confirm the theoretical ones.

Simulation Research on the Influence of Oil Damping to the Effect of Assimilating Impulsion Based on Accumulator

2011 ◽  
Vol 228-229 ◽  
pp. 332-339
Author(s):  
Qing Nie ◽  
Hong Nie ◽  
Ming Zhang
Keyword(s):  
Dynamic Model ◽  
Hydraulic System ◽  
General Function ◽  
Hydraulic Control ◽  
Hydraulic Circuit ◽  
Simulation Research ◽  
Throttle Valve ◽  
Simulation Results ◽  
Different Diameters ◽  
Sudden Load

The general function library and hydraulic control library of EASY5 software were used to establish the dynamic model of hydraulic system of a sudden load, which could assimilate impulsion based on accumulator. The system was simulated with different diameters of the oil supply hole of accumulator. The simulation results were compared and analyzed to research the influence of oil damping to the effect of assimilating impulsion based on accumulator. From the simulation results, a hydraulic circuit consists of a throttle valve controlled by pressure and an accumulator was put forward to improve the capacity of accumulator to assimilate impulsion by changing the oil damping of accumulator through throttle valve, which had certain of meaning in project.

The Analysis and Improvement of Hydraulic Control System of Sealant-Spreading Machine

2011 ◽  
Vol 110-116 ◽  
pp. 2206-2209
Author(s):  
Cai Xia Ju ◽  
Feng Gang Li
Keyword(s):  
Control System ◽  
Hydraulic System ◽  
Production Cost ◽  
Control Circuit ◽  
Hydraulic Control ◽  
Equipment Operation ◽  
Operation Stability ◽  
Hydraulic Valves ◽  
Improved Methods ◽  
Hydraulic Control System

This paper introduces the composing and the principle of hydraulic control system of Sealant-spreading machine _ a specific machine for insulating-glass made. It analyzes the matters of the hydraulic system that often appear on operation, and implements the methods of improvement to hydraulic oil, hydraulic valves, etc hydraulic system and its control circuit system. The improved methods not only reduce the production cost, but also improve the equipment operation stability. Practice shows that these schemes are effective and feasible.The improvement of hydraulic control system not only fulfils the technology demand of Sealant-spreading Machine, but also stabilizes the performance much more.

Reliability optimization design of hydraulic system considering oil contamination

2020 ◽  
Vol 34 (12) ◽  
pp. 5041-5051
Author(s):  
Xinda Zhou ◽  
Zhaojun Yang ◽  
Hailong Tian ◽  
Chuanhai Chen ◽  
Liding Wang ◽  
...  
Keyword(s):  
Hydraulic System ◽  
Optimization Design ◽  
Oil Contamination ◽  
Reliability Optimization

The Study of Temperature Control Hydraulic Sensor

2012 ◽  
Vol 468-471 ◽  
pp. 1266-1269
Author(s):  
Yan Jun Zhang ◽  
Zi Ming Kou ◽  
Gui Jun Gao ◽  
Jun Zhang
Keyword(s):  
Temperature Control ◽  
Hydraulic System ◽  
Control Valve ◽  
Elastic Force ◽  
Working Environment ◽  
Hydraulic Circuit ◽  
New Type ◽  
Spool Valve ◽  
Special Working

Abstract. To improve the automation degree in special working environment which contains explosive gas. We develop a new type of temperature control hydraulic sensor basically on theory and lots of experiments. As the temperature reaches about 85°C，the motion part of the inductor will stretch to a certain length, and then it will push the adjusting rod. Simultaneously，the adjusting rod will overcome the elastic force of the spring and compel the spool valve to deform, and finally the control valve port will be open, it allows the control oil of the hydraulic system to pass. At last it reaches our destination that we can make the control of hydraulic circuit be realized.

Determination of Optimum Process Parameters in Gas-Assisted Injection Molding

2011 ◽  
Vol 143-144 ◽  
pp. 494-498
Author(s):  
Ke Ming Zi ◽  
Li Heng Chen
Keyword(s):  
Injection Molding ◽  
Delay Time ◽  
Optimization Design ◽  
Gas Pressure ◽  
Optimum Process ◽  
Injection Molding Process ◽  
Technological Parameters ◽  
Molding Process ◽  
Element Analysis ◽  
Melt Temperature

With finite element analysis software Moldflow, numerical simulation and studies about FM truck roof handle were conducted on gas-assisted injection molding process. The influences of melt pre-injection shot, gas pressure, delay time and melt temperature were observed by using multi-factor orthogonal experimental method. According to the analysis of the factors' impact on evaluation index, the optimized parameter combination is obtained. Therefore the optimization design of technological parameters is done. The results show that during the gas-assisted injection molding, optimum pre-injection shot is 94%,gas pressure is 15MPa,delay time is 0.5s,melt temperature is 240 oC. This study provided a more practical approach for the gas-assisted injection molding process optimization.

Study on Dynamic Characteristics of Hydraulic Pressure System of MPM Tube Rolling Mill

2013 ◽  
Vol 706-708 ◽  
pp. 1580-1584
Author(s):  
Gui Hua Fang ◽  
Jian Bo Wang ◽  
Wen Shuai Zheng
Keyword(s):  
Dynamic Characteristics ◽  
Response Speed ◽  
Pipe Production ◽  
Hydraulic Pressure ◽  
Hydraulic Control ◽  
Pressure System ◽  
Steel Rolling ◽  
Hydraulic Servo ◽  
Tube Rolling Mill ◽  
The Impact

Now MPM mill is widely used in hydraulic servo control technology in the field of seamless steel pipe production. But the hydraulic control system has the defect of complex control, bigger load power, more disturbance factors, higher response speed requirement and so on, which are unfavorable for analyzing the impact of factors of steel rolling precision. The conclusions show that: the system model is conducive to the analysis of the factors that affect the rolling accuracy, and it provides a theoretical basis for study the dynamic characteristics of the system, the optimal design and so on.

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