Whether the cutter of the cutter is sharp and how long it is used greatly affects the production efficiency of the cutter. The life and effect of the tool depends on the following factors,
1. Materials for making props.
2. Factors such as the shape and angle of the sharpening stone (sharpening wheel), the quality of the sharpening blade, and the type of material being cut.
For the raw material of the cutting head, the material of the cutting edge should be chromium tungsten manganese steel with relatively high hardness, and the cutting body can be made of low carbon steel. If it is a high-quality blade, it can reach a certain hardness after fire extraction.
In terms of the shape and angle of the sharpening blade, if the sharpening angle of the cutting blade is relatively small, its blade will be sharper. Therefore, as long as the tool material allows, the angle of sharpening should be as small as possible.
The quality of the sharpening knife depends mainly on the skill level of the operator. If the quality you feel is relatively high, the longer it can be used.
The safety of the paper cutter is a problem that many digital printing practitioners tend to overlook, and it affects the safe use of the paper cutter in the following ways:
1. Braking device. In order to save money, many manufacturers use the principle of circuit braking, that is, cutting off the power supply of the cutter motor through the upper and lower limit sensors. This device may cause "slider" in the event of sudden power failure, loose sockets, and sensor failure. Extremely dangerous situation. In order to prevent this from happening, it is necessary to use a motor assembly with a mechanical brake device, so that no matter what circuit failure occurs, the motor is locked to avoid accidents.
2. Double button operation principle. This requires the two buttons to be pressed at the same time, otherwise the cutter motor will not move, which can guarantee the absolute safety of single-person operation.
3. In the actual use process, two people often cooperate to operate, so that the situation becomes very dangerous, which requires the cutter to be equipped with front and rear safety covers. When the safety cover is opened, the motor will not move to ensure safety.
4. The above is a safety factor that affects the use process, so pay attention to the replacement of the blade during maintenance and maintenance, use the knife holder to ensure that the blade edge is closed, not only to ensure the safety of people, but also to ensure that the blade is not damaged.
5. Furthermore, the removed blades must not be left at will to avoid hurting people.
1. The flat sheet cutter is divided into electric cutters in terms of the driving mechanism of the paper pushing mechanism (only the button can be pressed manually or the corresponding mechanism can be operated to control the motor or mechanical transmission mechanism to realize the pusher Positioning), program-controlled paper cutter (automatic positioning of the paper pusher through the program control system, and also the positioning method of the electric paper cutter) and an intelligent digital display paper cutter between two ways (through The control system automatically roughly positions, and then realizes accurate positioning through manual fine-tuning).
2. The program-controlled paper cutter is divided into three ways: stepper motor control, frequency conversion speed control, and AC servo control from the control method of the paper pusher movement.
The stepping motor control and frequency conversion speed control method can achieve ± 0.1mm in the positioning accuracy of the paper cutter pusher, and the speed can reach 8-14 meters / minute (the specific accuracy and speed are due to the manufacturer ’s use The control system and the selected electrical components will be quite different), but the noise of the stepper motor control mode is harsh when it is started, and it is not optimistic about many paper cutter manufacturers and paper cutter users.
The AC servo control method has a great qualitative and quantitative breakthrough in the positioning accuracy and speed of the paper cutter pusher than the frequency conversion speed control. The positioning accuracy can reach ± 0.025- ± 0.015mm, and the paper pushing speed can reach 16-20 M / min (the accuracy and speed achieved will vary greatly depending on the control system used by the manufacturer and the electrical components selected).
3. From the operation interface (operation mode) of the program-controlled paper cutter, it can be divided into three types: button type, touch screen, button and touch screen dual mode.
The key-operated program-controlled paper cutter first appeared, which doubled the efficiency of the digital display cutter, improved the work efficiency for many users, created more wealth, and was favored by customers. This method can not be compared with the touch screen operation method in the intuitive and simple operation.
The touch screen operation mode can easily realize functions such as equal division, isometric, cycle size, calculator use and calculation result input program, and the operation is simple and intuitive (the key operation mode requires a combination of several keys when performing certain functions To achieve this, many customers consult the manufacturer for instructions after replacing the operator and unable to find the manual); there is a visual display of the status of the detection switch on each link of the machine on the screen, which provides great convenience for the removal of common faults , Saves time and money for customers and manufacturers who use paper cutters.
The dual mode of buttons and touch screen can be used in combination, which can meet the old habits of some operators. At the same time, it provides one more input method, which has relatively improved durability, but the interface designed by the paper cutter manufacturer in the touch screen operation mode and When the operation menu is reasonable and the quality of the selected screen is stable and reliable, its significance is not very great.
4. From the driving mode of the paper pressing mechanism, it is divided into mechanical paper pressing and hydraulic paper pressing.
The hydraulic paper pressing method can more accurately ensure the precision of the equal length tolerance of the cut material after cutting (commonly known as the accuracy of the upper and lower knife), especially when the cutting density is larger, the difference is particularly obvious. Therefore, with the advent of hydraulic paper-pressing paper cutters, mechanical paper-pressing paper cutters are no longer used by customers who require high cutting accuracy.
The clutches of the paper pressing mechanism and the cutting mechanism are driven by hydraulic methods, and are also called full hydraulic or dual hydraulic paper cutting machines. Full hydraulic or dual hydraulic paper cutters have a greater cutting force, which has obvious advantages when cutting high-density cut objects. The clutch is not easy to slip and there is no need to adjust the clutch clearance frequently.
5. From the size display mode and the positioning of the paper pusher, it is divided into a digital display paper cutter and a program-controlled paper cutter. The same as the paper cutter).
The main difference between the digital display paper cutter and the program-controlled paper cutter is the control of the paper pushing mechanism. The program-controlled paper cutter not only greatly improves the efficiency, but also effectively reduces the labor intensity of the operator.
6. From the width of the sheet width (maximum cutting width) of the flat sheet cutter, it is divided into a half-cut cutter (also called a half-open cutter), a full-open cutter (full-sheet cutter) and many more.
There are different types of paper cutter blades, and their applications vary.
(1) Alloy tool steel cutter blade
The blade is compound rolled and can be used for general cutting. The original grains are more refined and resistant to chipping. The combination of blade steel and blade body has no defects such as transition and gap, and there is no stripping of the blade edge to ensure the service life.
(2) High-speed tool steel cutter blade
It is suitable for all kinds of paper, especially cutting all kinds of high-gage coated paper, and the life of one-time sharpening is increased by 5 times. High-speed steel contains 18% tungsten, wear resistance, flat blade, sharp and stable, cutting quality is accurate and smooth.
The paper-cutting equipment has strict usage specifications, and today I will share with you:
1. Before starting the machine, you should first check the machine, do a good job of cleaning, add engine oil or butter, try the empty knife three times, and observe whether there is a return knife. Knives should be parked immediately and repaired in a timely manner.
2. When working, think must be concentrated, and it is strictly forbidden for two people to operate the paper cutter at the same time.
3. When the machine is running, it is strictly forbidden to reach into the machine. If there is a fault, it is strictly forbidden to grab the paper by hand. The machine should be stopped immediately.
4. When adjusting the machine, changing the blade, and repairing the oil, scrubbing and inspection, it is necessary to block the power supply.