INDEX LIST OF FIGURES:. 1 LIST OF TABLES: .2 Manufacturing process of Plastic tag products .3 Subject and scope.2 Scope of the study. 9 CHAPTER 2: LITERATURE REVIEW .1 Concept and definition about heating ovens .1 Definition of heating oven .2 Introduction to electric oven .1 Types of Industrial Oven: .2 Commercially available industrial ovens .3 Thermal concepts and principles .2 The rocess of heat gain and exothermic .4 PI control temperature: .5 Methods for determining the parameters of a PI controller: .1 Manual adjustment method .2 Determining parameters for PI controller by experimental method (the second method of Ziegler - Nichols) .3 Method Chien - Hrones - Reswick (CHR) .4 Cohen - Coon method .5 Method Wang - Juang - Chan (WJC) .6 Tyreus – Luyben Method: .6 Select controller design method. 24 CHAPTER 3: DESIGN AND IMPROVEMENT .1 Calculation and selecting components: .1 Block diagram of Heating system: .4 Diagram of Circuit: .5 Set up parameters for PI controller: .2 Determine PI controller parameters by Ziegler-Nichols 1 method (for Right oven): 74 3.3 Determine PI controller parameters by Ziegler-Nichols 2 method (for Right oven): 76 3.4 Determine the PI controller parameters by using Matlab (for Right oven): .5 Determine the PI controller parameters for Left oven:.6 Apply the PI controller to the real system:.
84 CHAPTER 4: EXPERIMENTS AND ANALYSIS .1 List of needs: .2 List of metrics: .3 Needs Metrics Correlation Matrix: .5 Methods of Experiment: .1 Static test analysis: .2 Dynamic test Analysis:. 100 CHAPTER 5: CONCLUSION & DEVELOPMENT. 104 LIST OF FIGURES: Figure 1: Manufactory process of plastic tag. 7 Figure 2: Promotional two layers PVC baking oven [9].
12 Figure 3: Energy-saving PVC baking oven [10]. 13 Figure 4: The process of cooling and baking. 16 Figure 5: Response of PV to step change of SP vs time for Kp. 19 Figure 6: Response of PV to step change of SP vs time for Ki.
20 Figure 7: Response of the system to Ziegler-Nichols method [4]. 21 Figure 8: Response of the system when adjusting Cohen-Coon[4]. 23 Figure 9: System response to the Wang-Juang-Chan method[4]. 24 Figure 10: Properties of plastic material.
27 Figure 11: Maysor coil [11]. 28 Figure 12: LOGO! 12-24 RCE siemens 6ed1052-1md00-0ba8[13]. 30 Figure 13: PT100 M6 screw thermocouple temperature sensor[14]. 31 Figure 14: Temperature transmitter coil[15].
32 Figure 15: HMI screen. 32 Figure 16: Expansion module for LOGO!. 34 Figure 17: Analog output modules. 35 Figure 19: Galvanized steel box[16].
36 Figure 20: Corrugated iron. 37 Figure 21: Stainless steel. 38 Figure 23: Cooling system by air [17]. 38 Figure 24: Cooling system by water (using radiator) [17].
39 Figure 25: Cooling system combine cooling table and water [18]. 39 Figure 26: Plumbing structure. 41 Figure 27: Diaper calculation of water tank. 42 Figure 28: Detail calculation diagram of the radiator.
43 Figure 29: Diaper calculation of the radiator. 43 Figure 30: Draft drawing. 50 Figure 31: Base drawing. 51 Figure 32: Left oven cover drawing.
52 Figure 33: Right oven cover drawing. 53 Figure 34: Water tray drawing. 54 Figure 35: Overall drawing. 56 Figure 37: Implementation process.
56 Figure 38: Overall view of the machine. 57 Figure 39: The oven door. 59 Figure 40: Block diagram. 59 Figure 41: Power supply diagram.
60 Figure 42: Oven temperature control cluster. 61 Figure 43: Cylinder control cluster. 62 Figure 44: Cooler cluster. 63 Figure 45: Circuit wiring digram.
63 Figure 46: Cylinder step diagram. 64 Figure 47: Structure simulation of the furnace. 65 Figure 48: Flow chart of control design. 66 Figure 49: Heat control diagram.
67 Figure 50: Working principle of the cooling system. 68 Figure 51: Control panel. 69 Figure 52: The SCADA system is displayed on HMI screen. 70 Figure 53: Use Factory IO to simulation machine.
71 Figure 54: System response chart, experiment, Right oven. 72 Figure 55: System response chart, experiment, left oven. 72 1 Figure 56: Accurate characteristic, Approximate characteristic [7]. 73 Figure 57: System response chart with Z-N-1.
75 Figure 58: System response chart with Z-N-2. 75 Figure 59: The system’s oscillation response chart of right oven. 76 Figure 60: Chart the system’s response with K=41, T=77. 77 Figure 61: Chart the system’s response with K=41, T=667.
77 Figure 62: The system’s response chart with K=21,t=67. 78 Figure 63: The system’s response chart with K=20. 78 Figure 64: Measured and simulated model output. 79 Figure 65: Transfer function of right oven.
79 Figure 66: Right oven system response chart, matlab. 80 Figure 67: Diagram of the system. 80 Figure 68: Right oven response chart using PI algorithm. 80 Figure 69: System response chart with Z-N-1.
82 Figure 70: Measured and simulated model output. 83 Figure 71: Right oven response system chart, matlab. 83 Figure 72: Diagram of the system. 84 Figure 73: System response chart in experiment with PI controller right oven.
84 Figure 74: System response chart in experiment with PI controller of left oven. 85 Figure 75: Temperature of left oven (℃). 95 Figure 76: Temperature of right oven (℃). 95 Figure 77: Testing time to set baking time (s).
97 Figure 78: Locations of sensors- upper oven. 98 Figure 79: Locations of sensors-lower oven. 98 Figure 80: Heating process on water. 100 Figure 81: Cooling testing.
100 2 LIST OF TABLES: Table 1: Mission statement. 5 Table 2: Specific capacities of some substances. 15 Table 3: Determining parameters for PID controller Ziegler-Nichols method. 21 Table 4: Select controller according to CHR method.
22 Table 5: The PID set parameter according to CHR method. 22 Table 6: Control parameter of Cohen-Coon method. 23 Table 7: Control parameter of Tyreus-Luyben method. 24 Table 8: Specific heat of aluminum mold.
26 Table 9: Conductor value [12]. 30 Table 10: Thermal conductivity. 36 Table 11: PI controller parameter by Ziegler-Nichols method 1. 74 Table 12: List of needs.
86 Table 13: List of metrics. 87 Table 14: Correlation matrix. 90 Table 16: Method of experiment. 92 Table 17: 1-time sampling specification data collection.
92 Table 18: Controlling machine mechanical test data. 93 Table 19: Electrical components test data. 94 Table 20: Transporting time in 6 km (min). 94 Table 21: Experiment to discover the optimum timing.
96 Table 22: Experiment to discover the optimum timing. 97 Table 23: Testing time to maintenance (hour). 97 Table 24: Table determine where the optimum temperature sensor should be placed. 97 Table 25: Table determine where the optimum temperature sensor should be placed.
98 Table 26: 1-time sampling specification result and comment. 102 3 ACKNOWLEDGEMENT Our team would like to thank the Ho Chi Minh City University of Technology and Education's Management Board and teachers. Throughout the years, the instructors of Mechanical Engineering, Mechatronics in particular, have been devoted to teaching and imparting important information and expertise to us. We would especially want to thank Mr.
Pham Bach Duong for his committed assistance, straight counsel, and direction throughout the project-making process. We continually gain more relevant information while improving the project, but we also learn the spirit of work, the attitude of serious and successful scientific study, and these are extremely important things for We are in the process of learning. We also sincerely appreciate THACH GIA CO., LTD (where the product is operated) for allowing us to borrow the equipment for research and development. In the process of completing the project as well as making a project report, it is difficult to avoid errors, we eagerly await your comments and recommendations so that we may gain more experience and develop our project in the best way possible.
We sincerely thank you! 4 RESEARCH, IMPROVE AND MANUFACTURE OF THERMAL OVEN MOLDING PLASTIC TAG PRODUCTS Mission statement: Project name Research, improve and manufacture mold-processing furnaces for liquid plastic-label products. Product Description Heating oven is used in small and medium-sized companies, enterprises with the number of workers about 5- 7 people. Project type Product improvement base on bakery products Main business goals Provide heating furnaces for companies, enterprises need to use. Producing the first heating product with Vietnamese brand.
Minimize competitive costs with machine brands from other countries. Main marketing On online sales websites such as AMAZON, EBAY, ALIBABA. Sub market Social networking sites such as Facebook, Youtube, Weibo, Zalo, Zing me,. Assumptions and Create products with low cost, suitable productivity, constraints easy to repair, suitable for processing workshops to distribute to garment companies,.
Related parties Material suppliers (electromechanical system suppliers, control circuit systems, etc.), Assembly and processing workshops, service marketing groups, buyers and users, distributors and agents physical. Table 1: Mission statement 5 ABSTRACT Plastic manufacturing sector is a strong development trend in today's industrialized society, and it plays an essential part in human existence. Although plastic has detrimental impacts on the environment and humans, we cannot ignore the numerous advantages it provides. As a result, the plastics manufacturing sector, particularly the manufacture of liquid plastic logos and cards, is quickly expanding.
These items are frequently used as key chains, shoe tags, emblems, and souvenir presents. Not only that, but it also manufactures protective equipment such as gloves, helmets, and so on. Heating is a crucial stage in the manufacture of a plastic product. It aids in the transformation of plastic from liquid to solid.
As a result, we research and improve a heating oven. With characteristics such as compactness, ease of transportation, high efficiency, and cheap cost, we will strive to create the best machine, therefore making the plastic production line more effective. Our country is growing in terms of modernisation and industrialisation. People's lives are becoming increasingly better.
As a result, energy plays a role important. Energy is used in a variety of ways, including the quantity of heat needed for heating, drying, and heat treatment. It is critical to utilise this energy source effectively and efficiently. Provides high efficiency and significant advantages to consumers as well as the entire land water system in general.
Electric ovens are frequently utilized in industry to satisfy a variety of practical purposes. Thermal energy is used in business and everyday life. Play a very vital function. Drying may be heated using heat energy.
As a result, the logical and effective utilization of energy resources is critical. Because of the answer to many practical needs, electric resistance furnaces are widely employed in industry.1 Introduction Nowadays, the application of plastic stamps to serve in industries such as garments, shoes. of brands is extremely rich that can be attached to many types of products that wrongly promote brands and makeup. for more beautiful products.
A number of lines of flexible rubber labels are listed as follows: - Stamps of flexible rubber rubbers used to make brand identity logos. - Stamps of plastic rubber labels used as key chains. - Stamps of plastic rubber labels used in fashion and apparel industry. - Stamps of plastic rubber labels for making household appliances labels.
- Stamps of plastic rubber labels make the team of interior labels. - Stamps of plastic rubber labels for making briefcases, suitcases and bags. - Stamps of plastic rubber labels for making footwear labels. The market for plastic labeling machines has been largely dominated by China and the prices of Chinese products are quite high.
The potential of quality Vietnamese products and more reasonable prices is huge. Major brands of the world are increasingly concentrated in Vietnam and their need to use labels is very large, which makes the plastic stamp market in greater demand than ever.
