I. Daily: Ensuring a Basic Operating Environment
Even if the equipment is running normally, the following maintenance should be performed after each shift:
Clean the dyeing tank, nozzles, and roller surfaces to remove residual fabric scraps, dye, and adhesive residue, preventing blockages in the circulation system or fabric abrasions.
Check the fabric guide path for smoothness, removing any tangled yarn and foreign objects to ensure a smooth start-up the next day.
II. Weekly: Critical Transmission System Maintenance
This is the core step in preventing mechanical failures:
Check and clean any adhesive residue inside the machine to prevent buildup that could affect transmission stability.
Lubricate the drive chain to prevent loosening or breakage and ensure winding synchronization.
Check the stainless steel rollers for tangled yarn ends, keeping the surface smooth to reduce the risk of fabric damage.
III. Monthly: Systematic Verification and Testing
This is the in-depth inspection stage, focusing on accuracy and stability:
Verify the drive rollers, gearbox, and tension control system to ensure smooth operation and prevent wrinkles or weft skew caused by component misalignment.
Check for aging seals and stable hydraulic system pressure to prevent leaks or uncontrolled tension.
Use a laser alignment instrument to check the parallelism of the fabric roll and guide rollers; adjust promptly if the deviation exceeds 0.1mm.
IV. Quarterly: Comprehensive Lubrication and Structural Maintenance
Perform periodic maintenance on easily worn parts:
Give all transmission bearings a comprehensive lubrication to reduce dry friction wear and extend service life.
Check if the fabric stretcher curvature is suitable for the current fabric type (for silk, it is recommended to control the chord pitch at 4–8mm) to prevent uneven edges.
Assess the condition of easily worn parts such as scrapers and limit switches, and replace them in advance if necessary.
V. Annual: Complete Machine "Check-up" and Safety Review
Equivalent to an annual overhaul of the equipment, recommended to be performed by professional technicians:
Comprehensively inspect the cylinder, safety valves, electrical system, and temperature control device, and replace aging components.
Change the hydraulic oil in the hydraulic system (every 1000 hours of operation) and clean the return oil filter (every 250–300 hours). Calibrate the temperature sensors and instruments to ensure that the temperature difference between different areas of the dyeing vat is ≤ ±0.5℃, in order to avoid color variations caused by temperature control failure.
