Reasons, countermeasures and effects of BOPP film slitting quality ---
three. Irregular end faces
2. The effect of uneven end faces on usage
Regardless of the type and purpose of the film, the problem of "alignment" is involved, and the user generally uses the form of electric eye tracking to perform alignment. The film roll with irregular end faces, the wrong film layer appears to be bent under the pressure of the package, and the electric eye is difficult to track during use, which affects the use effect, such as inaccurate printing overprinting, misalignment of the bag, and the like. In addition, the film roll with irregular end faces is inconspicuous, and the "selling phase" is poor, which affects the brand image of the product.
Slitting machine operation guide ---
5 handling of abnormal conditions
5.1 Once the quality problem is found in the cutting process, it should be stopped immediately and recorded. The products that cannot be processed should be strictly distinguished, and the label should be marked and reported to the workshop to be handled by the monitor.
5.2 If the abnormal cutting process, abnormal smell, high temperature or sudden failure occurs, the machine should stop immediately. The machine personnel should fill in the “equipment failure repair order” and submit it to the squad leader for confirmation. Also recorded in the production record. 5.3 Timely feedback to the squad leader for problems that cannot be dealt with with quality, equipment, materials, and crafts.
5.4 Equipment failure Machine personnel should actively cooperate with the machine repair to debug, and record the equipment failure, the amount of damage, etc. in the "machine failure debugging consumption table", signed and confirmed by the machine personnel, the shift supervisor, and the machine repair class. The number of equipment faults after on-site confirmation is not included in the consumption assessment.
5.5 When the machine is running, it is strictly prohibited to be unattended.
Slitting machine parts ---
1. Type of inspection system for the tension and speed of the slitting machine:
1 Tension sensor detection: The tension sensor is installed under the bearing of the tension detecting roller, converts the detected aluminum foil tension into an electrical signal, sends it to the tension adjuster, compares it with the original set tension signal, performs PID calculation, and then inputs The winding motor controller achieves the purpose of controlling the tension and rotation speed of the winding roller.
2Floating roller indirect tension detecting system: a set of floating roller is installed in front of the aluminum foil tracking roller. The position of the floating roller is detected by a potentiometer. The tension control method is to keep the tension constant by keeping the position of the floating roller as constant as possible. .
3 The magnetic powder clutch is used to control the rotational torque of the input winding roller to achieve tension control: the magnetic powder clutch is composed of an active part and a driven part, and is connected to the winding roller through a transmission mechanism such as a universal joint, and the fine ferromagnetic powder is filled in the middle. As a torque transmission medium. A magnetic field is formed by applying a constant current to the exciting coil, and the magnetic powder is magnetized. The magnetized magnetic powder attracts each other to form a chain arrangement. When the active part rotates at a constant speed, the coupling force between the magnetic powders is broken to form a circumferential tangential force, and the product of the tangential force and the radius of the magnetic ring is the driving driven part. The winding torque of the winding realizes the coupling of the output torque from the active part to the driven part in continuous rotation, thereby achieving the purpose of controlling the tension.
4 slitting Unwinding capacity and speed detection system: The magnetic powder tension brake is mainly used to control the unwinding force and speed. The working principle is: the coupling is installed in the magnetic powder brake, and the input parts and output with magnetic coils are installed. component. Below the magnetic coil is an annular groove, the underside of which is an annular rotor or output member. The annular groove is located at the center of the output member and is filled with magnetic powder. When there is excitation current in the magnetic coil, the coil generates magnetic flux to align the magnetic powder in the direction of the magnetic field, thus generating damping between the input member and the output member, and transmitting the torque. If the tension and speed applied to the aluminum foil are increased or decreased, the magnitude of the exciting current can be changed, or the magnitude of the current applied to the coupling coil by the varying amplifier can be effectively controlled.
Zhengzhou EAST IMPORT AND EXPORT co., ltd . ( a goulian group of company) a manufacturer and exporter for all kind of packaging machinery , like bopp tape coating machines, bopp tape slitting machines. Bopp tape core cutter, bopp tape core loader etc