1、 Preparation before operation

1. Environmental and equipment inspection

• Venue requirements：
  • Ensure that there are no debris around the equipment, the ground is flat and dry, and avoid the wrapping machine shaking or film roll falling off due to uneven ground.
  • Reserve sufficient operating space (it is recommended to leave at least 1 meter on each side of the equipment) to prevent personnel collision or membrane jamming.
• Power and gas source(If applicable):
  • Check if the power supply voltage meets the equipment requirements (such as 220V/380V) to avoid unstable voltage that may damage the motor or control system.
  • The pneumatic wrapping machine needs to confirm that the air pressure is stable (usually 0.5-0.7MPa), the air source is free of oil or moisture, and prevent abnormal cylinder operation.

2. Preparation of membrane materials and consumables

• Film roll selection：
  • Select the appropriate specifications of stretch film (such as width, thickness, and pre stretch ratio) based on product size and packaging requirements.
  • Check if the film roll is damaged, deformed, or damp to avoid interruption of the film or loose wrapping during the wrapping process.
• Install film roll：
  • Install the film roll correctly onto the film rack or film feeding mechanism, ensuring that the center of the film roll is aligned with the equipment axis to prevent deviation during wrapping.
  • Adjust the tension of the film (through a tension controller or manual knob) to ensure that the film is neither too loose (easy to loosen) nor too tight (may break) during wrapping.

3. Equipment parameter settings

• Number of wrapping layers and tension：
  • Set the number of wrapping layers (usually 2-6 layers) according to the weight and stability of the product, and increase the number of layers for heavy objects to enhance the firmness of the wrapping.
  • Adjust the pre stretching rate of the stretch film (usually 100% -300%). The higher the pre stretching rate, the better the stretchability of the film, but it is necessary to avoid excessive stretching that may cause the film to rupture.
• Wrapping speed and height：
  • Set the wrapping speed (such as the number of packages per minute) according to the product size and production line rhythm to avoid incomplete wrapping caused by too fast a speed.
  • Adjust the wrapping height range (e.g. minimum height of 50mm, maximum height of 2000mm) to ensure that the equipment can adapt to products of different sizes.

2、 Key control points during operation

1. Product placement and positioning

• Product placement：
  • Place the product steadily on the wrapping machine turntable or conveyor belt, ensuring that the center of the product is aligned with the wrapping center to avoid deviation or tilting during wrapping.
  • For fragile or irregularly shaped products, pallets or fillers should be used to secure them to prevent displacement or damage during the wrapping process.
• auto-positioning(If applicable):
  • If the device is equipped with photoelectric sensors or visual positioning systems, it is necessary to check whether the sensors are clean and sensitive to ensure accurate identification of the product location.

2. Packaging process monitoring

• Stretching and wrapping of film：
  • Observe the stretching of the film to ensure that it evenly wraps around the surface of the product without wrinkles or gaps.
  • If the film is found to be broken or the wrapping is not tight, immediately stop the machine to adjust the tension or replace the film roll.
• Equipment operating status：
  • The sound of equipment operation and abnormal noise (such as friction sound, impact sound) may indicate loose or worn components, which need to be checked in a timely manner.
  • Check whether the turntable or conveyor belt runs smoothly to avoid wrapping interruption or product damage caused by jamming.

3. Personnel safety protection

• Operating Specifications：
  • It is prohibited to insert hands or tools into the wrapping area during the operation of the wrapping machine to prevent injury from film rolls or mechanical components.
  • Operators need to wear protective gloves and goggles to avoid scratching the skin or eye injuries from splashes on the edge of the film material.
• Emergency shutdown：
  • Familiarize yourself with the location of the emergency stop button. In case of sudden situations such as film roll jamming or equipment noise, immediately stop the machine and cut off the power or gas source before handling.

3、 Maintenance and upkeep after operation

1. Equipment cleaning

• Cleaning of membrane residue：
  • After each assignment, wipe the surface of the equipment (such as the turntable, film frame, conveyor belt) with a soft cloth to remove film residue or dust, and prevent corrosion or jamming.
  • Clean the core shaft and film feeding mechanism of the film roll to avoid the accumulation of film debris that may affect the next use.
• Internal cleaning(If needed):
  • Regularly open the device casing (such as once a month), blow the internal dust with compressed air, and check whether the motor, gears, and other components are clean.

2. Component inspection and replacement

• Inspection of vulnerable parts：
  • Check whether the membrane frame roller, turntable bearing, conveyor belt and other components are worn or loose, and replace or tighten them in a timely manner.
  • Lubricate moving parts (such as chains and gears) using specialized lubricants (such as lithium based grease) to avoid wear caused by dry friction.
• Electrical system inspection：
  • Check if the power cord and plug are damaged to avoid the risk of electrical leakage.
  • Clean the control panel buttons and display screen to ensure sensitive operation.

3. Long term parking treatment

• Film roll preservation：
  • If the equipment is not used for a long time, the film roll should be removed and sealed for storage to prevent moisture or deformation.
• Equipment Protection：
  • Cover the equipment with a dust cover to prevent dust from entering the interior.
  • Regularly (e.g. every 2 weeks) start the equipment and run it idle for 5 minutes to prevent components from rusting or getting stuck due to long-term idle.

4、 Common faults and troubleshooting methods