The primary maintenance of a mold involves the daily operations and upkeep of the mold during production. Key tasks include cleaning, lubrication, and regular inspections to ensure smooth operation and longevity.
First, Mold Maintenance Before Installation
Before installing the mold, it is essential to clean both the upper and lower surfaces thoroughly. This ensures that the mold mounting surface and the press table are free from debris, preventing any damage and maintaining the parallelism between the upper and lower mounting areas. Proper preparation before installation helps avoid misalignment issues during production.
Maintenance After Installation
Once the mold is installed, open it and clean all internal components, especially the guiding mechanisms. For surface molds, ensure the exterior is clean to maintain part quality. Apply grease to moving parts and inspect all components, with special attention to safety features such as side pins, screws, guards, and waste channels. These elements play a critical role in ensuring safe and efficient operation.
Maintenance During Production
During production, regularly lubricate key areas of the mold, such as the drawing ring and rounded corners of the drawing die, the edges of the trimming die, and the flanging block. It's also important to clean the small hole waste channels in the trimming and punching dies to prevent blockages and maintain efficiency.
Post-Production Maintenance
After production ends, conduct a thorough inspection of the mold. Clean it completely to ensure no dirt or residue remains. Remove any waste materials from the mold and check that the waste bin is empty. Document the mold’s condition before and after use, and provide accurate feedback to the mold management system for future reference.
Secondary Mold Maintenance
Secondary maintenance refers to scheduled, more comprehensive maintenance based on the mold’s technical condition and complexity. This task is typically carried out by mold repair technicians and recorded accordingly. Here are some specific maintenance procedures for different mold components:
Drawing Dies and Punching Dies: The main issue with convex and concave dies is surface wear and embossing. Regular polishing of the die’s rounded sections helps maintain precision. If deep craters form, professional repair is necessary to restore functionality.
Guide Components (Guide Pins, Guide Sleeves, etc.): These parts can become scratched due to dirt or improper alignment. Use oil stones to remove scratches and polish the surfaces to restore their smoothness and accuracy.
Trimming Blade Edges: Blade edges may chip or break during use. Repairing these requires replacing elastic components like springs. Springs are one of the most vulnerable parts of a mold, often breaking or deforming. When replacing them, always match the color, outer diameter, and length to ensure compatibility and performance.
Punches and Punching Tools: Most punches are standard parts and are prone to breakage or bending. If damaged, they should be replaced with identical specifications. Key parameters to check include the working size, mounting dimensions, and overall length.
Fastening Components: Regularly check bolts, screws, and other fasteners for looseness or damage. Replace them with matching parts if necessary to maintain structural integrity.
Pressing and Ejection Components: Components such as pressure plates, spring pads, and unloading plates require inspection for wear or damage. Check pneumatic top devices for air leaks and replace damaged hoses or parts as needed.
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