What should be paid attention to in the use of high-speed base film machine for knife die processing equipment?

As the key equipment in knife die processing, high-speed base film machine is mainly used for high-speed cutting and molding of base film (such as rubber, foam and other liner materials), which has high running speed and high precision requirements. The operation should strictly follow the specifications to ensure equipment life, processing quality and personnel safety. The following are the core precautions during use:

First, preparation and inspection before startup

Equipment status check

Check whether the power supply voltage is stable (it is necessary to match the rated voltage of the equipment to avoid motor damage caused by lack of phase and excessive voltage fluctuation) and whether the grounding line is firm (to prevent leakage from causing safety accidents).

Check whether the transmission system (such as belt, gear and guide rail) is stuck by foreign objects, and whether the lubricating parts (such as bearings and sliders) are filled with enough lubricating oil to ensure smooth operation and no abnormal noise.

Make sure that the cutting tools (such as round knives and flat knives) are firmly installed, the blade is free of defects and cracks, and the joint gap between the cutter shaft and the basement membrane is even (too large a gap will easily lead to incomplete cutting, while too small a gap will wear the blade or basement membrane).

Material and parameter confirmation

Check whether the thickness and hardness of the base film material are suitable for the equipment (for example, too thick hard material may exceed the cutting capacity of the equipment, resulting in tool cracking or motor overload).

According to the material of the base film, the preset parameters are: adjusting the cutting speed (try cutting at a low speed at high speed to avoid material slipping), the cutter pressure (soft materials such as foam need to reduce the pressure to prevent deformation, and hard materials such as rubber need to increase the pressure to ensure cutting), and the feeding tension (uneven tension will easily lead to the deviation of the base film and affect the cutting dimensional accuracy).

Second, the operation specification in operation

Safety protection operation

Operators must wear protective equipment, such as non-slip gloves (to avoid being caught in the feed roller when manually adjusting materials) and goggles (to prevent the debris of the basement membrane from splashing), and long hair should be tied up and a working cap should be worn.

When the equipment is running, it is forbidden to put hands and tools into the feeding area, cutting area or transmission parts (such as feeding roller and cutter shaft). If it is necessary to clean up the waste or adjust the position, you must first press the emergency stop button and operate after the equipment stops completely.

It is forbidden to change the tool, adjust the parameters or remove the protective cover during the operation of the equipment (the protective cover can prevent foreign objects from entering the tool area and avoid accidental contact by personnel).

Processing quality monitoring

Observe in real time whether the edge of the cut base film is smooth (with or without burrs and curling) and whether the size meets the requirements of the drawings (samples can be taken regularly and measured with calipers). If there is any deviation, stop the machine in time to adjust the parameters (such as correcting the feeding speed and cutter pressure).

Pay attention to the feeding status of the base film: in case of wrinkle and deviation, it is necessary to check whether the pressure of the feeding roller is uniform (the height of the rollers on both sides can be adjusted slightly) or whether the base film coil is installed correctly (the center of the coil should be aligned with the feeding center line of the equipment).

Avoid continuous high-speed operation for a long time: after the equipment works continuously for 1-2 hours, it can be suspended for 10-15 minutes to allow the motor and cutter to cool down, so as to prevent performance degradation caused by overheating (especially in high temperature environment in summer).

Third, the maintenance and maintenance after downtime

Equipment cleaning and resetting

After turning off the power supply, clean up the waste and dust in the cutting area (compressed air can be used to purge the surfaces of the cutter shaft and the feed roller to avoid debris accumulation affecting the next cutting accuracy), and wipe the oil stain on the cutter surface (to prevent the blade from rusting).

Raise the cutter to a safe position, reset the feed roller, and reset the parameter panel to zero, so as to ensure the initial state is stable when starting the machine next time.

Key points of regular maintenance

Daily: Check the tool wear. If the blade becomes dull, it needs to be polished or replaced in time (a blunt knife will increase the cutting force, increase the equipment load and produce burrs).

Weekly: lubricate the transmission parts (such as guide rails and screw rods) and clean the adhesive on the surface of the feed roller (such as the residual adhesive layer on the base film, which can be wiped with alcohol).

Monthly: Check whether the electrical system (such as terminals and sensors) is loose and aging, and ensure that the emergency stop button and safety switch function normally (the equipment needs to be powered off immediately after pressing the emergency stop).

Iv. handling of special circumstances

Sudden failure response

If the equipment has abnormal sound, severe vibration or smoke, immediately press the emergency stop button to cut off the main power supply, and wait for professional maintenance personnel to troubleshoot (non-professionals are prohibited from disassembling the motor and circuit components without authorization).

If the base film is stuck in the cutting area, do not forcibly pull it, and carefully take it out with tools (such as tweezers) after stopping the machine to avoid damaging the cutter or feeding mechanism.

Attention to material replacement

When replacing the base film with different materials or thicknesses, it is necessary to recalibrate the tool gap and pressure parameters (for example, to change from rubber film to foam film, it is necessary to reduce the pressure and the feeding speed to prevent the foam from being crushed), and try to cut in small batches before mass production.

summary

The safe and stable operation of high-speed bottom film machine depends on the whole process management of "pre-inspection, in-process standardization and post-maintenance". Strictly following the above precautions can not only ensure the safety of operators, reduce equipment failures, but also ensure the accuracy and consistency of base film cutting, laying a foundation for the assembly quality of subsequent knife dies. For new operators, they need professional training (including equipment principle and emergency treatment) before taking up their posts, so as to avoid losses caused by improper operation.