What is the pre tightening of bending machine column?

The moment equipment of bending machine column is pre tightened and pre tensioned by hydraulic press. The heating moment mode is applied in the design scheme. It is a common way to warm and prestressed tension. Therefore, a heating hole should be drilled at the end of the column, and the depth of the heating hole should exceed the height width ratio of the beam. After installing the vertical pole and upper beam, the internal and external nuts shall be cooled by water first, and then heated by heating rod or steam to increase the end of the column. After the temperature is reached, tighten the outer nut. The angle of view is generally measured accurately according to the length of the arc, and the diameter of the nut rotates on the length of the arc. After the closed cooling tower, a large torque force is caused between the nut and the beam, which makes the nut not easy to fall off. When heating, pay attention to the other 2 diagonal columns of heating bending machine.

In the hydraulic transmission device of the bending machine, the common high-pressure oil pipe includes seamless steel pipe, nylon pipe, air conditioning copper pipe and plastic hose. Because the working pressure of seamless steel pipe is high in the whole process of work, and the bending half warp can not be very small, so it can not be bent. For the high-pressure oil pipe of high-pressure system software of bending machine, stainless steel pipe is generally used; the pressure of air conditioning copper pipe is generally 6.3-10mpa. The air conditioning copper pipe can be bent after heating and softening, which is more easy to bend than seamless steel pipe, with high price and weak vibration resistance. Nylon pipe is suitable for bottom pressure system software; plastic hose bears relatively low pressure and is generally used for the hydraulic transmission system of bending machine to flow back into the pipe. High pressure hose is made of stainless steel wire system, which can be used as high fuel oil pipe.

The bending machine moves the work roll according to the effect of external force such as hydraulic press and mechanical equipment force, so as to make the plate bend or roll over. What is the cause of the bending problem of the bending machine? According to various experiments and practical activities and their related empirical analysis, it is found that there are three reasons for this situation. The application of winder is very easy to cause problems. Because the force is mutual when turning the thick sheet, the winder is also very easy to be damaged.

One will cause bending in the material itself. In such a case, the device can't solve it. The solution is to use the leveling machine to carry out all leveling work before laser cutting. The other is that the existence of the plate vibration pattern will also cause bending. The key is that the larger the vibration pattern, the greater the probability of bending along the edge in the production process. The three problems are caused by the problems of the equipment itself. Generally, the gap between the upper side and the lower side of the vertical scissors of the bending machine causes uneven force and rapid movement of the equipment.

Safety prevention of bending machine is very important, which can ensure the safety of workers' lives, sense doors and reduce safety risks. Safety devices of grain packaging machine and hydraulic plate shears include safety devices and safety devices. According to the safety protection regulations of the hydraulic shearing machine, the safety device of the hydraulic shearing machine can select and apply two-hand control equipment, concrete microcomputer raw material control, such as the setting of two-hand keys, light source type safety device, and the setting of automatic shutdown.