Diseño e implementación de un sistema de monitoreo y control automático para una máquina empacadora de aceite vegetal para la Empresa EPASEM
In these times with a world with greater demands and global markets, is looking at the need to optimize resources, improve product quality and increase production volume, that is why the trend of production companies, refiners, etc.. are modernizing and automating production processes. The compa...
| Autor Principal: | Bastidas Villacrés, Juan Carlos |
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| Formato: | bachelorThesis |
| Idioma: | spa |
| Publicado: |
2013
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| Materias: | |
| Acceso en línea: |
http://dspace.ups.edu.ec/handle/123456789/5110 |
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| Sumario: |
In these times with a world with greater demands and global markets, is looking at the need to optimize resources, improve product quality and increase production volume, that is why the trend of production companies, refiners, etc.. are modernizing and automating production processes.
The company EPACEM S.A. dedicated to the production of refined olein, has been the need to increase production, bringing a new production line of vegetable oil in sleeves with a new ¼ liter.
The machine that was implemented on a production line that was designed under the criteria of quality, reliability and economy, which serves to drag the sleeves of a roll, which gives way to spend that are sideways and are ready to receivers in the liquid inside the sleeve while at the same time is taking shape, the dosing system is responsible for absorbing the oil pipes and dosing in quantities of 250ml, to be placed inside the sleeves, the sleeves and finally are sealed and released to the operator within the packing boxes of 12 units.
The electrical control system of the machine is programmed in a PLC SIEMENS S7-200 CPU 224xp, it was selected by having two communication ports, which are used to connect the PLC to the computer server and with the touch panel, located on the control panel of the machine, to control the system on the site and PC in addition to control, monitor and archive data from production, this computer located in a distant room monitoring of the production area.
In the pneumatic system, the designs were made taking into account the reliability of the system as it goes to work in a climate of high temperature and humidity, as is the province of Santo Domingo Tsachilas.
Pneumatic instruments are controlled by solenoid valves which convert electrical signals into pneumatic signals, which are controlled cylinder and valve passage which is responsible for directing the liquid into the dispenser and into the sleeve.
Smart cards with built fulfill the function of controlling the on / off valve and for controlling the temperature of the resistance of the seals, the latter is a control card for voltage phase angle, this card provides the passing voltage to the primary low-voltage transformers, that because the primary drive in less that current transformer secondary gearbox. To calibrate the temperature of the sealing sleeves on the board is a variable resistance (potentiometer), which regulates the time of the shooting in the TRIAC control card.
The programming of the touch panel and SCADA system are performed using the software WinCC flexible 2005 Advance, which was chosen to present this in a very friendly working environment with the user and the programmer, the programming functions are very similar SCADA for the touch panel. The difference between the two programs are the settings for the connection and the screen size and programming of work, with only 7 "on the panel, which is the actual physical size, the SCADA system, presents the options to control, monitor and store data in the system, checks are being made to start production, you can make changes within the program, as the speed of the machine, time stamp, is the monitoring process by displaying the state of the elements within the system, as well as the production and be stored within a database, with screens that are displayed in the working time of the components which indicates when the operator must perform preventive maintenance.
Once integrated electrical and pneumatic systems, we proceeded with the tests, which began going to the main engine, noting that the system of this mobile set, lubricated and working normally, as the cam shaft and presses . In the same way the motor which moves the rubber rollers, which pull the cover towards the presses.
We measured electrical parameters such as voltage, current, in engines, making sure they are working within normal parameters.
Verified that the mobile system is running in sync with the tests was of the stamps in the sleeves. With a roll-and-white signs tacas be tested, which began with the minimum temperature, and increased gradually until a uniform seal around the edge of the holster.
For calibration of the dosing is performed by the route of the stem of the pneumatic cylinder, the cylinder is connected with a dosing volume, which works similarly to a syringe to absorb and expel the liquid, the route of stem is limited by two magnetic sensors located in the body of the pneumatic cylinder.
Tested all systems separately, we proceeded to give up the whole system, performing the tests in water dosed and packing sleeves test, verifying that systems are in sync, and linked to the SCADA system to verify communications and programming on the PC.
We could create an economic system at the cost of acquisition, operation and maintenance, which can compete in the local market, with a machine of quality, reliability and profitability, because for every dollar invested there is a yield of approximately Thirteen dollars, the operation in air consumption and electrical energy is minimal thanks to the sealing sleeve. |
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