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Automatic shrink packaging machine control machine theory and repair - Packaging Machine, Packaging by zyzy wang
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Automatic shrink packaging machine control machine theory and repair - Packaging Machine, Packaging by ZYZY WANG
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| Article Posted: 06/29/2010 |
| Article Views: 239 |
| Articles Written: 2301 - MORE ARTICLES FROM THIS AUTHOR |
| Word Count: 673 |
| Article Votes: 0 |
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Automatic shrink packaging machine control machine theory and repair - Packaging Machine, Packaging |
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Business,Business News,Business Opportunities
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Automatic Shrink Package Machine is a highly automated equipment, the product widely used in medicine, Food & Beverage And home-based industries, applications can significantly reduce the contraction plane in the box with packing materials and labor costs, have important economic significance.
1, equipment, principles and structure Automatic shrink packaging machine is a kind of pneumatic components and the combination of mechanical devices, and other peripheral circuits by the plc control of automatic packaging equipment. The device is a cylinder actuator. By the two five-solenoid valve to control its forward and backward. The work place by the magnetic cylinder and the proximity switch to detect and switch back to the plc, the plc control commands issued through the program to the appropriate cylinder valve to control the action cylinder.
2, fault repair 2.1 plc fault Plc fault relay contact output points are mainly adhesion. If the point of control motor, a signal failure phenomena start motor, the motor is running, but the stop signal is issued, the motor does not stop running, when the plc power outage, the motor stopped running. If the point of control valve. Solenoid valve coil failure phenomenon UPS, the cylinder is not reset. If blunt plc to separate the adhesion method, can help determine the failure.
Plc output point of failure in the maintenance of two ways, one is more convenient to modify the program with the programmer, will damage the output point changes as the stand-out point, and transfer lines. Such as the control solenoid valve 1004 points damage to alternate points 1105 points. 1004 points available programmer to find the relevant statement, keep (014) 01004 to keep (014) 01105. 1002 points damage to the motor control, to reserve point 1106, revised 1002 statement out01002 point related to out01106, while transfer cable.
If there is no programmer, can be more trouble with the second, remove plc, apart plc will remove standby point for the output relay to the output point of damage. Then the original line numbers can be installed.
2.2 Proximity Switch Fault Shrink machine packing machine has five close switch. 3 for knife protection, two for the control of the upper and lower film release membrane motor. Which is used to control knife protection, and occasionally a second malfunction, it will interrupt the normal operation of the process, and because fewer failures occur, time is short, to the failure analysis, exclusion caused some difficulties. Typical performance for the occasional failure knife melt down is not in place then automatically lifted. Failure due to melting knife in the fall was not encountered during the packaging, but melting and proximity switch knife l lose the signal, and protect knives on board, like access to a packaged product, melting knife automatically up to return.
Fault repair methods, can be melted and proximity switch knife rise of a parallel installation of the same type of switches, double switches in parallel, to improve its reliability.
2.3 magnetic switch failure Magnetic switches used to detect the location of the cylinder and control cylinder stroke. Stack, push package, press kits and knife four cylinder melting movements are interrelated, with the magnetic switch to detect and control their position. Cylinder failure is not mainly for the follow-up action, because the cylinder faster, leading to magnetic switch can not detect the signal. If pushed too fast packet cylinder, push reset packets, press kits and melting knife cylinder does not operate.
Fault repair methods, adjustable and two five-cylinder solenoid valve on the throttle, adjusting a small compressed air flow and reduce the cylinder speed, until the magnetic switch can detect the signal up.
2.4 solenoid valve malfunction
Solenoid valve failure mainly to the cylinder does not move or do not reset, because the cylinder valve can not change to or channeling gas. I am a professional writer from Chinese Manufacturers, which contains a great deal of information about $keyword_li, welcome to visit!
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