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U-steel steel profile bending machine/U-steel section bending machine adopts arc downward adjustable structure, the upper roller shaft is fixed, the two lower rollers around a central axis relative to the upper roller shaft were made in the arc lifting movement, its function is mainly to pre-bend the end of the profile and make the profile bending and deformation, at the same time the two lower rollers are also the main drive shaft, driven by hydraulic motors, so that the bending and deformation of the profile rolled into shape. In order to prevent the profile in the process of bending the twisted deformation, improve the profile bending accuracy, the addition of two rollers and rollers, can be up and down vertical movement, in order to adapt to the bending of different specifications and different bending radius of the profile. Vertical profile bending machine of the above moving parts are installed in the welded structure of the bed, constituting the main body of the profile bending machine, the machine's entire action is driven by the liquid card, by the electrical centralised control of the lifting movement of the two lower rollers, the digital display, centralised in the operation of the operating table. Overview of structural components
1, drive part
The three moulds of the machine are driven by high-torque hydraulic motors, which can be rotated in positive and negative directions; this can avoid the "slipping" phenomenon that may occur during the rolling process, and the linear speed of the upper and lower moulds are automatically matched during the coupon making process.
The rotary motion is equipped with a brake to ensure accurate positioning of the workpiece during rolling. The device operates smoothly and the rolling is flexible and reliable.
2、Spindle part
The main spindles are the main execution elements of the machine and have sufficient strength, rigidity, surface hardness and storage accuracy to ensure reliability and service life. All three spindles are supported by spherical roller bearings, which are suitable for low-speed and heavy-duty applications with long service life and low friction loss. The span between the two bearings supporting the spindles is large, which increases the stability of the spindles.
The upper shaft is fixed in position, and the two lower shafts are driven by double-acting hydraulic cylinders to make arc lifting and lowering movements around the centre shaft.
Oil pin, the centre shaft and other rotating parts are supported by SF-1 oil-free lubricated plain bearings (the bearings are based on steel backing, a layer of spherical bronze powder is sintered on the steel backing, and the surface is modified polyformaldehyde, which is used to support the spindle.
surface is modified polyformaldehyde, after rolling in the round pores of the bronze powder is filled with wear-resistant layer material of the three-layer composite material), is a commercialised product.
3、Mould part
The three moulds of the machine are installed at the end of the three spindles, and the torque is transmitted by the guiding flat key. Connected by the centre bolt, the moulds can be easily replaced. The rollers can follow with the lower mould, or lift and rotate, to cooperate with the main mould to bend and roll the profiles and provide bending precision.
4、Hydraulic part
The main role of the hydraulic system is to drive the rotary movement of the hydraulic motor, the two lower shaft lifting movement, tracking of the rollers and so on.
Pump station part of the power source for the hydraulic system. Provide the power needed by the system. By the motor, the pump provides power, the control part of the oil block form reduces the pipeline, joints, easy to operate and maintain, the pump outlet is a good place for the hydraulic system. For operation and maintenance, the outlet of the pump is equipped with a relief valve and pressure relay for system safety protection.
When the system pressure exceeds the pressure set by the relief valve relief valve opens, the system unloading, relief valve failure pressure exceeds the set pressure can not be unloaded when the pressure, by the bed force relays
Feedback signal electrical system power failure protection.
The entire hydraulic system is reasonably designed, reliable, and equipped with high-precision suction and return filters to ensure the cleanliness of the system fluid. There is an air filter to ensure the normal breathing of the oil tank and water evaporation. The oil temperature and oil level gauge shows the amount of hydraulic oil in the tank and the temperature of the hydraulic oil. The system pressure and pressure fluctuation can be observed visually through the pressure gauge.
Through the electro-hydraulic reversing valve, it can control the lifting and lowering movement of the lower mould; through the liquid-controlled check valve, the mould can stay at any position.
5、Electrical system
The electrical system consists of operation desk and control system. All movements are operated in the operating table. Use and characteristics
Vertical profile bending machine machine structure is reasonable, stable performance, energy saving and material saving effect is remarkable, is the ideal profile bending equipment. The equipment is dedicated to bending angle steel, channel steel, I-beam, flat steel, square steel, round steel and other shaped steel processing equipment, can be completed at a time on the material rolled round, school round process. Profile bending machine is widely used in petroleum, chemical, hydropower, shipbuilding and machinery manufacturing industries.
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