Operating rules and matters needing attention of industrial aluminum extrusion machine plant line
First from the process of analysis:1. Before opening the aluminum extrusion machine, ensure that there are no sundries and oil stains around the equipment and on the machine.2 according to the production request to prepare the material, according to the ratio request into the material groove.3. Check the power supply condition and acknowledge the normal operation of each control cabinet.I. Main machine of industrial aluminum profile kneading machineCan be divided into the following some:1. The transmission and kneading system is controlled by the main frequency converter to control the variable frequency speed regulating motor, which is passed to the screw step by step through the reducer distribution box and the cross spline. During the process, the program and parameter values input in the frequency converter have been set and completed when the equipment leaves the factory, and cannot be changed at will.2. The heating and cooling system is composed of cylinder heating and cooling, die head heating, screw core heating and cooling, controlled by the electric cavity program, B&R temperature module with PID temperature control software to replace the traditional temperature control table, the system can actively optimize PID parameters in the heating process, and actively assign values after the calculation. The PID parameters can also be manually assigned according to the existing test, and the temperature control is accurate to ±℃. The operating principle is that a temperature value such as 180℃ is given in each heating section, and the data is measured by the thermocouple. When heating, with the gradual increase of temperature, the heating frequency is gradually reduced, and the heating time is gradually shortened. When ≥180℃, the area begins to cool and the fan begins to operate. (cooling and air cooling and oil cooling two) when the temperature is less than or equal to 180℃ and the beginning of heating, cycle, eventually reach balance. Core temperature is the same reason, the only set at low temperature in 80 ℃, and is a heat conduction medium to heat transfer, when the temperature of 80 ℃ or less core temperature heating tube heating operation, through the heat pump cycle to screw supply, when the temperature of 80 ℃ or higher cooler water solenoid valve open, oil after after cooler to take away the screw in the remaining heat pump cycle. The two, three and four regions of the cylinder and the core temperature are based on the active control, and a manual forced cooling function is provided to control the instantaneous temperature increase.3. The active feeding system is controlled by the time relay or the material level meter to transmit the signal. When the material is short, the material level meter transmits the signal, and the system begins to feed the material, and the material level meter signal is interrupted after the material is full.4. The feeding system is also realized by the frequency converter controlling the frequency conversion speed regulating cycloid pin wheel reducer. Its share is regulated according to the speed of the host screw. The host current and torque are directly affected by the amount of feeding, feeding less, and the host current and torque are reduced. Otherwise, it increases. When the feeding is too much, the practice current exceeds its rated current or torque exceeds its set value when the main time overload alarm shutdown, usually operated in 50%~80% of the rated value.5. The vacuum exhaust system is directly controlled by buttons to control the vacuum pump. When the vacuum is opened, the solenoid valve is opened, and when it is closed, the solenoid valve is closed.Industrial aluminum extruder commodities have their own design parameters, such as kneading component, kneading volume, kneading metal, etc., do not knead beyond the design parameters of the commodity in the kneading operation.On the transmission of industrial aluminum kneading machine itself, we should pay attention to the difference between single screw and double screw industrial aluminum kneading machine. Do not change the disorderly use, otherwise it is easy to form irreversible problems on industrial aluminum extruder products.Two, industrial aluminum kneading machine operating rules:1. Check whether the oil pressure system is leaking oil and whether the air pressure is normal.2, check the transmission belt, cold bed, storage table is not damaged and scraped profiles.3. Admit the length of the aluminum profile before stretching, then book the stretching rate, determine the stretching length, that is, the main collet moving direction, usually 6063T5 tensile rate of 0.5%- 1%, 6061T6 tensile rate of 0.8%- 1.5%.4, according to the shape of aluminum profile admit clamping method, large section hollow profile, can be inserted into the stretch pad, but try to ensure that the clamping area to meet.5, when the aluminum profile is cooled to below 50℃, open energy stretch profile.6, when the profile together with twists and turns, should be corrected after twisting twists and turns.7, the first and second root test pull, admit that the reservation of tensile rate and clamping method is not appropriate. Visual twists and turns, twisting, view the profile of the plane gap, flaring, parallel mouth, such as inappropriate, to properly adjust the tensile rate. 8, the normal stretch rate still can not eliminate twists and turns, twisting, or can not make how many scales qualified, should tell the operator to stop kneading.9, the profile on the cooling table can not conflict with each other, knock against, overlapping accumulation, avoid rubbing flowers.