Overview of Aluminium Coil Slitting Machine
1. Purpose of aluminium coil slitting line: Suitable for longitudinal shearing of metal strips, and rewinding the slit narrow strips into coils.
2. Advantages of aluminium coil slitting machine: Easy operation, high cutting quality, high material utilization, stepless speed regulation of cutting speed, etc.
3. Structure of aluminium coil slitting line: It consists of unwinding, material positioning, strip slitting, coiling, etc.
Exquisiteness of the Design Details in Aluminium Coil Slitting Line
Every detail on the aluminium coil slitting machine is carefully designed. In addition to realizing the shearing function of the aluminium coil slitting line, it is also to ensure the safety of the operation process. You may not have noticed that the protective operation measures in the aluminium coil slitting machine are actually reflected in various aspects. The editor can point out a few points.
For example, the knife shaft of the aluminium coil slitting line adopts high-precision machine tool spindle bearing support, which makes the axial and radial runout of the knife shaft small; at the same time, its knife disc adopts the three-point positioning locking method of the nut (or matching hydraulic nut strong tightening), not only for accurate dimensional accuracy but also for the function of firm locking. In order to more conveniently adjust the slitting speed, electronic control components and hydraulic components are used. Not only is the working reliability high, the control system has strong anti-interference ability, but more importantly, it has a self-diagnosis function, which can help quickly query the cause of the fault. In addition, it can be clearly seen that the slitting shear of the aluminium coil slitting machine is positioned and installed using an eccentric sleeve. Even if the shearing weight of the eccentric distance is changed, its material feeding height will not change, which is both reliable and safe.
Detailed Introduction to Several Types of Knife Holders for Aluminium Coil Slitting Lines
The blade is the executive component of the entire aluminium coil slitting machine. Whether a better shearing effect can be achieved has a lot to do with the setting of the blade and even the knife holder. The aluminium coil slitting line mainly has a structural form of knife holder, each of which has its own characteristics and applicable range. Understanding it will help everyone choose it. The knife seat of the aluminium coil slitting machine includes four structures: slider type, eccentric type, adjustable knife shaft length type and swing arm type.
1. Slider Type
In the entire knife seat, the knife seat of the lower knife shaft is fixed in the movable frame and the fixed frame, and the knife seat of the upper knife shaft is in the left and right sliders, so that the left and right sliders can move up and down in the guide rails of the movable frame and the fixed frame.
2. Eccetric Type
Its upper and lower knife shafts are supported in the eccentric sleeve, and the synchronous gear shaft is driven by the adjusting gear to rotate in opposite directions to adjust the eccentricity, thereby changing the height of the upper and lower knife shafts.
3. Adjustable Knife Shaft Length Type
It has such a feature that the movable frame on the left side can be adjusted to the outermost pair of blades close to the left end of the knife shaft, so that the working length of the knife shaft is shortened, so as to achieve the purpose of improving the rigidity of the knife shaft. Due to this feature, the aluminium coil slitting line can adapt to the shearing of large-width thin strips and small-width thick strips, and its application range is relatively wide.
4. Swing Arm Type
In comparison, its structure is much simpler, so it is mainly suitable for the longitudinal shearing of thin strips.
Many Options Exist for Aluminium Coil Slitting Line Signal Conversion
Most of the aluminium coil slitting machines we have seen are used for plate processing, and its functions have basically been automated, so the control system in the equipment is particularly important. The electro-hydraulic servo control system is used in the aluminium coil slitting line, which mainly uses the conversion between various signals to achieve various actions. However, there are many options for signal conversion. A detailed understanding will help us make a choice.
1.High-speed switch valve method for aluminium coil slitting machine
This method uses a high-speed response torque motor to directly or indirectly drive the fixed opening switch valve. When the digital signal output by the computer is amplified, it can control the switch valve in front, so that the valve can control the open and closed states. The feedback signal can be processed by the sampler and transmitted back to the computer in the form of digital quantity to control the operation of the aluminium coil slitting line.
2. Digital-to-analog conversion method
Through the digital-to-analog converter, the digital quantity generated by the computer can be converted into an analog quantity, which is used to control the current acting on the input end of the servo valve or proportional valve. The feedback signal can also be converted into a digital quantity through the analog-to-digital converter and enter the computer, thereby completing the conversion between signals.
3. Stepper motor method
It relies on a conversion method realized by the progressive motor controller. The digital signal output by the computer is input into the converter in pulse mode. The angle of the stepper motor is converted into the opening of the valve through a set of transmission devices, thus forming a digital flow valve. In addition, its outlet pressure is proportional to it to form a digital pressure valve, so as to achieve the purpose.
Importance of Tension Controller for Aluminium Coil Slitting Line
During the operation of the aluminium coil slitting machine, tension is one of the most important skill indicators. This parameter is involved when the aluminium coil slitting line is reeled in and out. In order to better control the size of the tension in the aluminium coil slitting machine, the tension controller has also become one of the indispensable parts of the aluminium coil slitting line. The tension controller calculates the roll diameter and load torque by detecting the linear speed of the reel, thereby setting the size of the tension.
Since the tension control of the aluminium coil slitting machine can output a standard zero to ten volt analog signal, corresponding to the rated torque of the asynchronous motor, this analog signal can be connected to the frequency converter to select the torque setting. In this way, the tension can be kept constant during the operation of the aluminium coil slitting line. If it is in tension control mode, whether it is a DC motor, an AC motor or a servo motor, the speed must be limited. Otherwise, when the torque generated by the motor overcomes the load torque and runs, rotation acceleration will be generated, causing the speed to increase continuously until the highest speed.
