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2025
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08
Top 10 Key Parameters for Cup Making Machine Debugging, Mastering These Makes Production Smoother!
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Debugging the cup forming machine is like "taking the pulse" of the equipment. Setting the parameters reasonably not only ensures the quality of the cup body but also allows the equipment to operate efficiently. The following 10 key parameters each have their own intricacies:
1. Heating Temperature
Different materials require different temperatures. PP sheets generally need 180-220℃, while PET sheets require 220-250℃. Biodegradable PLA material is more "delicate" and the temperature should be controlled between 170-190℃, otherwise it may degrade and affect the cup's performance.
2. Forming Air Pressure
The conventional forming air pressure for cups is suitable at 0.6-0.8MPa. For producing special-shaped cups, segmented adjustment is needed: 0.4MPa during pre-forming and then adjusted to 0.8MPa during final forming to avoid uneven cup wall thickness.
3. Cooling Time
For thinner cup bodies, 8-12 seconds of cooling time is sufficient; thick-walled cups require 15-20 seconds. Insufficient cooling causes deformation; too long cooling slows down production.
4. Mold Clearance
The mold clearance is best set 0.05-0.1mm larger than the sheet thickness. If the clearance is too small, the cup body is easily scratched; if too large, the cup edges will have burrs.
5. Feeding Speed
Usually set at 8-15 meters per minute, matching the forming cycle. Too fast causes sheet deviation; too slow may cause overheating issues.
6. Cutter Pressure
Pneumatic cutter pressure adjusted to 0.5-0.7MPa ensures smooth, burr-free cuts. If the cutter becomes dull, replace it promptly to avoid crushing the cup rim.
7. Demolding Force
During vacuum adsorption demolding, keep the force between -0.06 and -0.08MPa. Insufficient force causes the cup to stick to the mold; excessive force deforms the cup.
8. Heat Sealing Temperature
The heat sealing temperature for paper cup coating is 120-150℃, while plastic cup welding requires 180-200℃. Insufficient temperature results in poor sealing and leakage.
9. Stacking Count
Set 20-50 pieces per stack according to packaging requirements. Inaccurate counting easily causes jams in subsequent packaging steps.
10. Servo Speed
Start the trial run at 50% speed, then gradually increase to 80%-90% after stabilization. Rushing to speed up causes equipment vibration, affecting production stability.
Remember to adjust only one parameter at a time during debugging. Observe for 30 minutes without issues before adjusting the next. For new molds, it’s best to run at low speed for the first 3 hours to "break in" the mold. Have you encountered any tricky parameter issues when debugging the cup forming machine? Feel free to consult us!
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