Design and optimization of a pneumatically controlled application system
Vila-Flor, Daniel (2015)
2015
Automaatiotekniikan koulutusohjelma
Teknisten tieteiden tiedekunta - Faculty of Engineering Sciences
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Hyväksymispäivämäärä
2015-05-06
Julkaisun pysyvä osoite on
https://urn.fi/URN:NBN:fi:tty-201504231243
https://urn.fi/URN:NBN:fi:tty-201504231243
Tiivistelmä
The purpose of this thesis is to design and optimize a pneumatically controlled application system. Within the design process, the design criteria for the specific system and other options are considered and sub sequentially removed from consideration.
The general concept of the application system is to control the linear motion of an attachment plate. The attachment plate contains a nozzle and connection equipment. The purposed of the application system is to spray product onto a moving surface. Accurate linear motion control is required as the attachment plate moves side to side as the nozzle applies product on the moving surface. Problems associated with the installation of the application system relate to high temperatures, a contaminating environment, fire and explosion risk as well as the size of installation.
Typical linear motion control systems are controlled electronically, hydraulically or pneumatically. Each control system type possesses positives and negatives depending on the application and design requirements. In hazardous environments, such as potentially explosion risk areas, direct electronic control is avoided or limited due highest explosion risk. Hydraulic and pneumatic systems both fulfill explosion proof standards; however, pneumatic systems are more reliable as they do not have any component, such as hydraulic oil that may create an explosion risk. Pneumatic systems may be overloaded without damaged to the device itself. [1, p. 108].
The working concept of the Application System is to control the linear motion an at-tachment plate by means of a pneumatic motor. The motor rotates a sprocket-chain con-veyor system. The attachment plate hangs on two conveying rods. The attachment plate moves back and forth by motion of the chain controlled by the geared-motor combina-tion. Motor controlled is done by a proportional valve with position feedback of the attachment plate.
The general concept of the application system is to control the linear motion of an attachment plate. The attachment plate contains a nozzle and connection equipment. The purposed of the application system is to spray product onto a moving surface. Accurate linear motion control is required as the attachment plate moves side to side as the nozzle applies product on the moving surface. Problems associated with the installation of the application system relate to high temperatures, a contaminating environment, fire and explosion risk as well as the size of installation.
Typical linear motion control systems are controlled electronically, hydraulically or pneumatically. Each control system type possesses positives and negatives depending on the application and design requirements. In hazardous environments, such as potentially explosion risk areas, direct electronic control is avoided or limited due highest explosion risk. Hydraulic and pneumatic systems both fulfill explosion proof standards; however, pneumatic systems are more reliable as they do not have any component, such as hydraulic oil that may create an explosion risk. Pneumatic systems may be overloaded without damaged to the device itself. [1, p. 108].
The working concept of the Application System is to control the linear motion an at-tachment plate by means of a pneumatic motor. The motor rotates a sprocket-chain con-veyor system. The attachment plate hangs on two conveying rods. The attachment plate moves back and forth by motion of the chain controlled by the geared-motor combina-tion. Motor controlled is done by a proportional valve with position feedback of the attachment plate.