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1, the structure of the gear drive: gear transmission is an indispensable printing machine, when the determination of the plate roller diameter after the gear size is also set, but by what means the first color of power transmitted to the second color, Designers have their own methods. Some manufacturers in the transmission mechanism design is too complex, in order to improve accuracy in the hole pitch accuracy, gear precision, make a fuss, may be able to achieve the purpose in the new time, the use of time is slightly longer error will follow. And the cost will increase.
I think that the shorter the transmission distance is, the better, that is, only one bridge gear is used between the two roller gears, and this bridge gear can make slight adjustments to the center distances of the two second gears, so that the old and new machines can guarantee The smallest gear backlash. This is the most economical and effective transmission structure.
2. The structure of the printing roller 1) plate roller: It is better to be able to hang plates now, so that the plate speed is fast, the overprint is accurate, and it is not easy to produce errors. Avoid the problems that the adhesive paper directly on the roller is easy to get dirty.
2) The wall thickness of the plate roller: the larger the diameter, the thicker the wall thickness, and the longer the length, the thicker the wall thickness. To ensure sufficient stiffness.
3) Balance of the printing roller: The printing roller must be statically balanced (because it is running at low speed, so it is not necessary to perform dynamic balance calibration). If the balance does not exceed a certain value, overprinting cannot be correct.
4) The radial runout of the plate roller: theoretically ≤ 0.05 mm, and 0.10 mm when the roller diameter is extremely large.
5) The stress relief treatment of the printing plate roller: the printing plate roller is generally crimp welded with a steel plate or welded with a seamless tube. However, internal welding will inevitably produce stress. Therefore, the roller must be stress-relief, otherwise it will be deformed after a period of use.
Carton printing equipment parts accuracy
The overprint accuracy of the machine should be the first consideration of the manufacturer, but how to guarantee the overprint accuracy involves a lot of problems in the design and manufacturing process: