In the plane coordinate system (the vertical coordinate is the Y axis, and the horizontal coordinate is the axis), any point can be represented by its coordinate, otherwise, the coordinate of any point can also be expressed in the plane coordinate system .
        The pull gauge is to solve the size of the Y axis direction
        The front rule is to solve the size of the X axis direction
        1. Common pull gauge
        1. Two tangential rollers (usually up and down positions) are positioned by turning to pull the paper to a fixed position. Among them, the lower roller makes 360-degree rotation, and the upper roller is passive follow-up. Under normal circumstances, the lower roller must be quenched, and the upper roller uses a rolling bearing with a dust cover, because the paper is more or less dust and paper wool, if these dust or paper wool enter the bearing, it will inevitably affect the flexibility of the bearing , It will affect the normal work of the pull gauge.
        2. One roller (bearing) and one pull bar.
        The scroll wheel moves up and down, controlled by a cam, which can adjust the up and down time. The rack is also controlled by a cam, which can adjust the back and forth time. (The rack must be quenched)
        3. One roller (bearing) and one sector plate.
        The paper roller is moved up and down, and the fan-shaped plate swings back and forth. The drawing rule of our current local machine is in the form of two rollers, and the drawing rule of the laminating machine belongs to the third form.
        Second, the characteristics of the two forms of regulation
        1. Two rollers: the lower roller makes a rotating motion, and when the upper roller is pressed down, it starts to pull the paper, otherwise, when the upper roller is lifted, the paper passes. This form is relatively simple, only one cam control is required in the structure, and the adjustment is relatively simple.
        2. The drawing gauge used by the laminating machine is a little more complicated. The upper paper-drawing roller (bearing) is controlled by a cam, and the bottom is the knurling roller, which is controlled by the other end-face cam. It is worth noting that the up and down time of the laminating machine cannot be adjusted and can only be coordinated by the lower roller and cam. In addition, the rollers below must have a high hardness, and they must be concentric, and there should be no jumping phenomenon. In addition, the pulling force of the paper is always greater than the 'supporting force' of the paper. So how to adjust the size of the pulling force to make it just right? First, rely on experience, explore carefully, and keep summing up. Second, it is guaranteed by design. Because the laminating machine does not have high requirements for drawing gauges, and it is mainly based on thick paper. Our debuggers and installers must carefully study the working principle and structure of the pull gauge to be able to cope with the various problems that actually arise.
        3. The Front Regulation Department
        1. The function of the front gauge cover is to ensure the accuracy of the X axis direction.
        For the laminating machine, adjusting the front rules is an important part to ensure the correct buckle. The laminating machine has 6 front rules. These 6 front rules should be adjusted to the same plane, and the height is basically the same (relative to the panel). The rise and fall of the pre-regulation should be active, but no looseness is allowed. The four sides of the front gauge should be smooth and wear-resistant, and the oil passage should be smooth.
        2. The main function of the front gauge wheel is to send out the paper that has been positioned. The two front gauge wheels must be able to turn flexibly, but they cannot be shaken from side to side. The two left and right front gauge wheels should be adjusted to the "light and heavy" consistency, and fine-tuning should be repeated during the adjustment to make it consistent, so as to ensure that the "buckle" is basically consistent.
        4. The relationship between the pull rule, the front rule and the paper feed wheel
        After we have basically understood the role of the pull rule, the front rule and the paper feed wheel, let's discuss the relationship between the three. (In this respect, the principle of the laminating machine and the local machine are similar, the same is the same)
        First of all, we need to adjust the pull gauge sleeve. When the lower knurling wheel just turned towards the "knock body", the upper pressing wheel (bearing) just pressed down on the lower knurling wheel, and a certain pressure was generated between the two, which also led The upper pressing wheel rotates (counter-rotating), at this time the paper should be between the upper and lower pressing wheels, and be pulled towards the "backer body". This is the paper pulling action.
         I think we must first find a basic point, that is, the end of the pull gauge action, the pull gauge paper pulling cam (upper pressure wheel) has just been raised, and the distance between the upper and lower wheels is a piece of paper. Use this as a reference to adjust the front gauge and feed roller. When the top of the front gauge is lowered to a position above the panel by one sheet of paper, the gap between the paper feed roller and the paper feed roller below should also be the thickness of a sheet of paper. At the same time, observe whether there is a phenomenon of "bowing up" when the paper is fed in the front regulation during paper feeding, and whether the paper feed is smooth, and then make micro adjustments.
        5. How to ensure that each piece of paper can be pulled to the designated position:
        As mentioned earlier, the pulling force of the pull gauge should be greater than the supporting force of the paper, and the pressure of its compression spring must be adjusted patiently. When the paper is pulled to the designated position, that is, against the "mountain", the paper roller should stop rotating, commonly known as "slip", and the pull gauge has a knurled screw for adjusting the compression spring. Turn the screw to adjust the pressure of the compression spring, so that the contact between the upper and lower rollers generates pressure (overpressure), which is the pulling force of the paper. (The upper pressure wheel should be able to rotate very flexibly without any damping phenomenon.)
        In physics, the magnitude of the frictional force (tensile force of the pull gauge) is equal to the positive pressure × friction coefficient. The outer knurling of the lower roller is to increase the friction coefficient. When the pull gauge is pulling the paper, if you feel the phenomenon of ‘pulling over the head’, you can adjust the knurled screw on the back to reduce the positive pressure. (The front knurled screw is not used to adjust the pulling force of the paper pulling cam.) When we observe the pull of the pull gauge, the gap between the pressure plate and the lower plate should be 3 times that of the paper to be coated. If there is no paperboard on it, it will be too far when pulling the paper. When changing from thin paper to thick paper, adjust the gap between the two boards: turn the knurled screw on the front to adjust the upper board to be raised or lowered. At this time, as the upper pressure wheel is raised (increased clearance) with the upper pressure plate, the gap between the upper pressure wheel and the lower roller is also increased, and the pressure between them is also reduced. It is necessary to adjust the eccentric shaft at the upper pressure wheel to ensure sufficient positive pressure. At the same time, it is necessary to adjust the length of the knurled screw behind the compression spring.