Aim for a "sweet spot" where your part weight is 20–80% of the machine's maximum shot capacity. If the ratio is too low, the resin may degrade; if too high, it leads to inconsistent melt quality.
This is the pressure required to keep the mold closed during injection. A common rule is to add a 10–20% safety margin to your calculated minimum to prevent "flash" (excess plastic). buy used injection molding machine
Buying a used injection molding machine can save you compared to new equipment. However, the success of this investment depends on rigorous technical inspections and matching the machine's specifications to your production needs. 1. Key Technical Specifications Aim for a "sweet spot" where your part
Check for leaks around pumps and valves. Listen for unusual whining or knocking sounds from the pump, which often indicates wear. A common rule is to add a 10–20%
Verify the touchscreen responsiveness and check for any active error codes. Note that obsolete controls are extremely difficult to service.
Offers 30–50% energy savings , higher precision, and cleaner operation, though repairs are more specialized. Hybrid: Combines servo-electric speed with hydraulic power. 2. Essential Pre-Purchase Inspection Checklist
Measure for parallelism ; misalignment can damage molds. Look for cracks, pitting, or rust on the tie bars.