Adjustment of Packaging Speed for Transparent Film Three-dimensional Packaging Machine

Methods and key points for adjusting the packaging speed of transparent film three-dimensional packaging machines

The packaging speed adjustment of the transparent film three-dimensional packaging machine needs to be combined with the equipment structure, process parameters and production requirements. The following is an analysis from four aspects: adjustment principle, operation steps, influencing factors and precautions:

First, the core principle of speed regulation

Main drive system control

The packaging speed is determined by the transmission chain (such as chains and synchronous belts) driven by the main motor. The motor speed is adjusted through a frequency converter or servo controller to achieve stepless speed regulation. For example, if the frequency of the frequency converter is increased from 30Hz to 50Hz, the spindle speed may increase from 60 revolutions per minute to 100 revolutions per minute.

Linkage of auxiliary institutions

Modules such as film material conveying, forming, sealing and cutting, and labeling need to be synchronized with the main drive. For instance, the conveying speed of the membrane material should be matched with the rotational speed of the main shaft to prevent the membrane material from stretching or piling up.

Second, the operation steps for speed adjustment

Parameter setting and testing

Frequency converter speed regulation: Set the motor frequency through the control panel (such as the initial setting of 30Hz), start the equipment and observe the operating status.

Servo system speed regulation: If the equipment uses a servo motor, the electronic gear ratio or pulse frequency needs to be adjusted in the parameter interface.

Gradually increase the speed: Each time, increase the frequency by 5-10Hz and run for 5-10 minutes to check the quality of membrane material conveying, sealing and the stability of the finished product.

Process parameter adaptation

Sealing temperature and time: After the speed is increased, the sealing temperature should be appropriately raised (such as from 160℃ to 170℃) or the heat sealing time should be extended (such as from 0.8 seconds to 1 second) to ensure a firm seal.

Membrane material tension: An increase in speed may cause fluctuations in the membrane material tension, and the tension controller needs to be adjusted (such as increasing the cylinder pressure or adjusting the current of the magnetic powder brake).

Finished product quality verification

Sealing strength test: Randomly select samples and check whether the sealing is intact and free of air leakage.

Inspection of label application position: Confirm that the label application position is accurate, without any skew or bubbling.

Cutting accuracy verification: Check whether the cut surface is flat, free of burrs or adhesions.

Third, the key factors affecting packaging speed

Membrane material characteristics

Thickness and material: Thick films (such as 50μm) require higher temperatures and pressures, which may limit the speed. The melting point of PVC film is relatively low, so the speed can be appropriately increased.

Surface treatment: If the membrane material surface has an anti-static coating, it can reduce adsorption problems and facilitate high-speed operation.

Equipment performance

Heating efficiency: Slow heating speed of the heat sealing knife may lead to poor sealing during high-speed operation. It is necessary to upgrade the heating element or add an insulation layer.

Mechanical accuracy: The wear of guide rollers and deviation correction devices will affect the stability of membrane material transportation and requires regular maintenance.

Size of the packaging

Volume and weight: Large sizes or heavy objects may increase the load on the equipment. The speed needs to be reduced to ensure smooth operation.

Shape complexity: Irregular-shaped packaging materials (such as those with multiple edges and corners) require more precise forming and sealing and cutting, which may limit the speed.

Fourth, precautions for speed adjustment

Safety Operating Specifications

Shutdown adjustment: It is strictly prohibited to adjust the transmission components or parameters during the operation of the equipment. The machine must be stopped first and the power supply cut off.

Protective devices: Ensure that safety doors, emergency stop buttons and other devices are in normal condition to prevent accidents caused by excessive speed.

Equipment maintenance and upkeep

Regular inspection: Check the tightness of the transmission chain and synchronous belt weekly, and lubricate the bearings and gears monthly.

Cleaning and maintenance: After each production, clean up the membrane debris and glue residue to prevent accumulation and affect the operation of the equipment.

Anomaly handling and emergency measures

Membrane blockage treatment: If membrane material accumulation occurs, immediately stop the machine and clear the blockage, and check whether the conveying system is stuck.

Poor sealing: Reduce the speed and adjust the temperature and pressure. If the problem persists, check whether the heat sealing knife is worn.

Fifth, optimization suggestions for speed adjustment

Segmented speed regulation strategy

Startup stage: Operate at a low speed (such as 20-30Hz) to ensure accurate positioning of the membrane material and packaging.

Stable stage: Gradually increase the speed to the target speed (such as 40-50Hz), and monitor the quality indicators.

Final stage: Complete the remaining packaging at a low speed to avoid damage to the finished product due to inertia.

Data recording and analysis

Record parameters: After each adjustment, record parameters such as frequency, temperature, and tension, and establish a process database.

Comparative analysis: Compare the yield rate, energy consumption and other indicators at different speeds, and optimize the process plan.

Personnel training and skill enhancement

Operation training: Regularly train operators to master the methods of speed adjustment and troubleshooting skills.

Emergency drill: Simulate scenarios such as film blockage and poor sealing to enhance personnel's emergency response capabilities.

Summary

The speed adjustment of the transparent film three-dimensional packaging machine needs to comprehensively consider the performance of the equipment, the characteristics of the film material and the requirements of the packaged items. Efficient and stable production can be achieved through step-by-step testing and parameter adaptation. During operation, safety regulations must be strictly followed, equipment should be maintained regularly, and a data recording and analysis mechanism should be established to continuously optimize the process.