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The basic idea of injection molding machine maintenance work

2024-12-13 15:02:04 injection molding machine maintenance work

1. Core of Maintenance Work

Injection molding machine maintenance centers on fault judgment and treatment. It demands knowledge in mechanical, hydraulic, and electrical maintenance. Maintenance workers need to understand the machine's operation manual, be familiar with its mechanical parts, circuits, and oil circuits, and know normal and abnormal working states to avoid misjudgment.

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2. Importance of Operation and Debugging Knowledge

Maintenance requires understanding equipment operation and injection molding basics. As circuit boards and components are affected by factors like high - temperature and time, debugging is an essential skill. Understanding the injection molding process and being able to debug circuits and oil circuits is crucial.

3. Maintenance Principles and Information Collection

Maintenance should be accurate, reliable, and timely. Usually, the maintenance idea follows the sequence of circuit - oil circuit - mechanical parts. General manufacturers' provided diagrams are insufficient. Daily maintenance involves collecting information on electrical, mechanical, and hydraulic components. For example, mapping circuit schematics and measuring electrical parameters helps in fault - finding.

4. Basic Ideas of Maintenance Work

4.1 Fault Phenomenon Collection and Analysis

4.1.1 Communication with Operators

Ask operators about failure circumstances, like if it occurred during normal production or after specific operations. Inquire about pre - failure abnormal sounds, smells, or vibrations, and the machine's post - fault performance.

4.1.2 Observation of Fault Phenomena

Observe the machine's overall state for signs of damage, check indicator lights and display for alarm codes, and watch the machine's actions in the fault state.

4.2 Initial Fault Scope Determination

4.2.1 Mechanical System

Check mechanical transmission components like motors, belts, and gears. Examine structural components for deformation. Ensure the lubrication system has sufficient oil and smooth oil circuits.

4.2.2 Hydraulic System

Inspect hydraulic oil level and quality. Check power components like hydraulic pumps and motors. Verify the proper functioning of hydraulic valves.

4.2.3 Electrical System

Check the power supply, electrical lines in the control cabinet, and detection elements such as sensors.

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4.3 Troubleshooting and Repair

4.3.1 Screening Plan

Based on the initial fault scope, create a detailed troubleshooting plan. Check components from easy - to - access to hard - to - access, and external to internal.

4.3.2 Tools and Spare Parts Preparation

Prepare necessary maintenance tools like wrenches, multimeters, and hydraulic meters. Have spare parts such as seals and fuses ready.

4.3.3 Fault Repair

Repair or replace damaged mechanical parts. Clean, adjust, or replace components in the hydraulic system. Fix or replace electrical components and reconnect lines.

4.4 Test and Verification after Maintenance

4.4.1 No - load Test

After repair, conduct a no - load test. Observe the smoothness of the machine's actions and check for abnormal sounds and vibrations.

4.4.2 Load Test

Perform a load test after the no - load test is normal. Check the injection molding process and product quality.

4.4.3 Data Recording and Summary

Record maintenance data including fault symptoms and repair steps. Analyze failure causes and develop preventive measures.

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