1、 Poor formation of bubble caps
Reason: The upper and lower molds are not parallel, the sealing ring is damaged, the blowing pressure/time is improper, or the cooling is insufficient.
Solution: Adjust the parallelism of the mold and replace the sealing ring, optimize the blowing parameters (pressure 0.5-0.6MPa, time 0.6-1.0 seconds), and increase the cooling water flow rate (recommended ≥ 20L/min). If the exhaust hole is blocked and needs to be cleaned, the distance between the heating plate and the mold should be ≤ 1mm.
2、 Poor heat sealing effect
Reason: Low temperature, insufficient pressure, dirt on the mesh surface, or incomplete melting of the aluminum foil adhesive layer.
Solution: Increase the temperature by 5-10 ℃ and calibrate the pressure, clean the mesh with a wire brush, and replace the aluminum foil if necessary. During high-speed operation, it is necessary to synchronously increase the temperature.
3、 PVC/aluminum foil positioning offset
Reason: The center lines of the formed film and the heat sealing film are not aligned or the track adjustment is improper.
Solution: Re calibrate the centerline, optimize the track width to 1.5 times the width of the film material, and replace the film material with a consistent expansion rate.
4、 Aluminum foil wrinkles
Reason: Unbalanced height of the pressure rod, improper tension control, or parallelism error of the guide roller.
Solution: Adjust the height adjustment knob of the pressure rod, check the tension sensor, and calibrate the guide roller.
5、 Poor punching quality
Reason: The itinerary was not adjusted correctly or the molding/heat sealing film/track was not aligned.
Solution: Adjust the punching mobile handle, readjust the forming/heat sealing mold and track.
6、 Equipment safety maintenance
Operation standard: Avoid contact with high temperature areas (150-200 ℃), regularly check the motor circuit and lubrication.
Maintenance strategy: Clean up mold residue weekly, inspect cooling water circuit monthly, and replace heating element insulation layer quarterly.