| A brief introduction of pipe bender in pipe fitting equipment
Pipe bender and hydraulic pipe bender is a kind of pipe fitting equipment, but also with the blanking of the pipe billet using hydraulic force or high temperature bending out, the use of hydraulic bending out of the bend shape is beautiful and straight obstacle free resistance, production efficiency and quality are better.The bending push machine equipment mainly includes: frame, main cylinder support plate (including main cylinder), movable push plate, elbow clamp wheel platform, elbow rocker arm, rocker arm rotating shaft, elbow combination chuck, intermediate frequency transformer bracket, intermediate frequency power supply, intermediate frequency transformer, electrical control system and so on.And can be controlled by the large diameter medium frequency heating pipe bender, improve the response speed of the push pipe speed to the heating temperature change;Compared with the traditional method, the precision control ability of the process can be improved, so that the control system has a good control performance.
The parameter value of intermediate frequency pipe bender is very important. First, the size of the pipe bending number diameter of the hydraulic intermediate frequency pipe bender with the proper curvature half diameter value determines the resistance of the pipe in the zigzag forming.Generally speaking, the diameter of the pipe is large and half of the diameter is small, and the zigzag occurs simply in the case of wrinkling and skidding. It is difficult to ensure the zigzag quality, so it is better to choose the R value of the bending pipe die as 2 or 3 times of the pipe diameter.The selection of the corresponding mandrel and the mandrel of the azimuth hydraulic medium frequency pipe bender mainly supports the inner wall of the half diameter of the pipe bend to prevent its deformation.
Elbow machine is now made in machine tool zigzag forming without the use of mandil, its quality is difficult to ensure.There are many methods of mandrel.In addition, the mandril's orientation also has a positive influence on the tube bending forming. In theory, the tangent line of the mandril is even with the tangent line of the bending die. However, many practices have proved that it is better to advance 1-2mm, which is the ideal mass ratio of the bending pipe now.
Moderate winding forming rate set out for the main effect of the forming quality, the rate is too fast, simple form catheter and some flat, roundness short of supplication, pipe bend machine form ripping, snap, speed too slow simple form a sliding, catheter wrinkling and compaction of big diameter pipe abnormity tube some twists and turns of subsidence.For many applications on these two hydraulic medium frequency pipe benders, it is advisable to set the tube bending rate as 20-40% of the maximum bending rate of the machine.
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