Grab the four key parts in the cross-cutting adjustment of the carton to make the size accurate enough!
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Some customers have precise requirements on the size of the carton. Therefore, the carton factory attaches great importance to the carton size. In the production process, there are many factors affecting the carton size. The most direct ones are the crosscutting machine and the slitting machine. The operating principle of the machine and the four key parts of the cross-cutting machine adjustment.
1. The improper operation of the cross-cutting machine directly affects the size of the carton.
Improper operation of the cross-cutting machine will directly affect the size of the carton. Accuracy is one of the most important indicators for measuring the quality of the carton. If the size of the carton made is not accurate, it will directly lead to the scrapping of the carton, which will cause huge waste to the production.
Second, the working principle of computer cross-cutting machine
There are two main types of computer cross-cutting machines: DC motor drive control system and AC servo motor control system. The cross-cutting machine control system requires the computer to determine the cutting mode according to the set cutting length of the order and the number of pulses of the metering wheel and the motor position. And calculate the time parameters that need to be controlled and transmit them to the drive system. According to these parameters, the system control output is controlled, and the motor is controlled to achieve automatic cutting.
The shear rate of the control system must automatically track the feed rate of the shear material. The system detects the in and out speed of the material and the length of the cardboard (the number of pulses of the cardboard) in real time, and compensates the shear speed in the adjustment section to achieve precise shearing. purpose. The cross-cutting machine is operated at a speed that is synchronized with the line speed by pressing the speed measuring wheel on the cardboard. Therefore, the speed measuring wheel is a key factor affecting the accuracy of the cutting machine.
Third, to ensure the size of the carton, how to adjust the cross-cutting machine?
1. The gap between the speed measuring wheel and the roller greatly affects the accuracy of the cutting length. The gap should be adjusted to about 1mm to ensure that the cardboard can not be too tight or too loose when passing through the speed measuring wheel, otherwise the cutting length error will be caused.
2. The cross-cutting machine control system should have a cut length compensation function to compensate for systematic errors and random errors due to human factors.
3. The cutter shaft steel needs special treatment to ensure smooth and smooth operation at high speed. The automatic oil pump lubrication system and gear adopt a gapless structure to eliminate the transmission error and achieve accurate size cutting.
4. In the actual production, the factor that affects the size error of the cross-cutting machine to cut the cardboard is the speed of the cardboard. When the double-sided machine drive slips, it will cause the paperboard speed to fluctuate, which seriously affects the cutting length accuracy of the cardboard. Therefore, it is necessary to solve the problem of the slippage of the cardboard first, in order to ensure accurate cutting length accuracy under the condition that the paperboard runs stably.