During operation, fully automatic laminating machines may encounter minor issues. These problems may arise from neglect during routine use or result from prolonged machine operation. Manufacturers have investigated and identified three common types of issues: electrical circuits, adhesive pathways, and pneumatic systems.
1. Electrical Circuit Issues: If the adhesive gun or machine's hoses fail to heat up, first check if the fuse is blown or the fuse holder is faulty. Inspect the temperature controller, solid-state relay, or IC. If all these components are functioning correctly, the problem likely lies in the wiring. You should examine the circuitry.
2. Plastic flow issues: If adhesive fails to dispense despite normal temperatures in hoses and guns, this indicates a plastic flow problem. First, identify the specific point where flow stops. If adhesive remains in the hose, the issue lies with the gun, which should be thoroughly cleaned. If the hose shows no adhesive, the main unit may be faulty. Three causes exist for main unit failure: - Inverter malfunction (send for repair or replacement) - Motor failure (same procedure as for inverter) - Adhesive pump failure (Check the seal ring or whether the pump is damaged).
3. Air circuit issues: During operation of automatic laminating machines, solenoid valves are typically used for control, which can lead to air circuit problems. When air circuit issues occur, first check whether the air connections are reversed, whether the solenoid valve is damaged, or whether the wrong type of solenoid valve is being used.
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