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Design and Research on Control System of the Seaming Packer

Author: WuXinCheng
Tutor: TangShanHua
School: Wuhan Polytechnic University
Course: Mechanical and Electronic Engineering
Keywords: seaming packer PLC single chip microcomputer bag-length instrument color-marked tracking
CLC: TB486
Type: Master's thesis
Year: 2010
Downloads: 49
Quote: 0
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Abstract


The seaming packager is a continuous device, which wraps and seals products with using flexible materials. The packager has been widely used in the packaging of food, chemicals, daily necessities, medicine, hardware and other departments. The automation of seaming Packager depends on the intelligent level of control system, so it is necessary to design a kind of control system, which can improve the reliability, offer the convenience of operating, enhance the level of automation, provide a wider range of applications for the packager for us, according to the deep research on the control system of the seaming packager.Two kinds of electric control systems based on the PLC and single chip microcomputer were designed by analyzing the packaging craft and two different system of the transmission of the seaming packager: the control system of single power scheme of transmission, and the control system of double-power scheme of transmission. Two kinds of the the control system were researched and realised in terms of the hardware and the software, which met following four requirements of the seaming packager: Firstly, the capacity of the seaming packager could be adjusted continuously within a certain scope. Secondly, the length of bags could be adjusted continuously within a certain scope. Thirdly, the length of bags could be examined and displayed on spot. Fourthly, the film patterns on the bags could be kept full when the bags were cut off.Two electrical control systems, which could meet the control requirements of variable speed, compensation, the real-time display of the length of bags and the control of temperature, were designed in the paper. The capacity of the packing could be adjusted by adjusting inverter’s frequency. In the way of the control of temperature, AI-208 of temperature controller was used, which could control the sealing temperature of the package film.The control precision of the AI-208 is up to 0.1℃, so the controller could make the temperature of sealing equipments closer to the sealing temperature of the packaging film. With the single chip, LED digital tubes and photoelectric sensors, the designing of the bag-length instrument was completed, which could display length of bags at all times. The author showed originality a way of color-marked tracking, which could make the system of color-marked compensation more reliable and accurate, guarantee the integrity of patterns on the bags when the bags were cut off.The control system of single power transmission scheme could adjust the speed of the vertical sealing roller by start-stop the minor motor. The function of setting the length of the bags was added, and the institutions of vertical sealing roller was drived by step motor in the control system of the double-power transmission scheme. The aim of color-marked tracking was reached by changing the operating parameters of step motor automatically, and the precision of the compensation was improved further.Design of two electrical control systems in the paper has a active significance for the development and research of other control systems of packaging machines.

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CLC: > Industrial Technology > General industrial technology > Industrial common technology and equipment > Packaging Engineering > Packaging machinery and equipment
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