| The medium frequency pipe bender can push a variety of bending angles at one time
Characteristics of medium frequency pipe bender
1) The process can avoid the phenomenon of uneven wall thickness caused by tensile thinning of the convex edge of the pipe wall and compression thickening of the concave edge of the pipe wall during the forming of the traditional bending process.
2) The small radius (R≈D) and thin wall (t/D≈0.015) 180 elbow with uniform wall thickness can be produced by using this process, which can not be achieved by other bending processes.
3) If the design of various process parameters is reasonable, the process can ensure that the thickness of the pipe wall in each position is always unchanged during the forming process of the elbow, that is, it is always equal to the thickness of the straight pipe blank before deformation.
4) The technology can be used to push the same horn mandrel at one time to produce the same caliber of 45°, 90°, 180° and other bending angles of the bend pipe, high production efficiency.
How should the mould of pipe bender be improved
Because the diameter of the seamless pipe is more and the size of the elbow R is more, so every time the diameter changes, the size of the elbow must be changed. Each change is very troublesome, not only to make many molds, but also to adjust each time.We all know that the pipe bender is required to press out different shapes of pipe, and the requirements of the pipe for different shapes require that the pipe bender has a variety of grinding tools to match the pipe.
The use method of the shaped clamping die is basically the same as that of the R-shaped clamping die. Because of the changes in its structure, there are differences with the R-shaped clamping die when it is applied. The process methods that need to be paid attention to are as follows:
1. The V-shape size of the guide die and the clamping die should be unified to facilitate observation and adjustment of the die.After the improvement, nearly 20 kinds of molds can be saved in one year, and the adjustment time is reduced, and obvious economic benefits have been obtained.The following is the clip mold diagram, the shape of the guide mold and the clip mold is similar, the length is longer, so it is omitted.
2, with V-shaped clamping die clamping, clamping die and wheel die sometimes have a gap, the size of the gap is related to the size of the pipe diameter, when the pipe diameter is Φ10mm, the smallest gap.With the increase of pipe diameter, the gap gradually increases, but does not affect the clamping and processing.If the pipe is larger than Φ18mm, the V-shaped clamp die, wheel die and guide die should be replaced.Unlike the V-shaped clamping die, such as the use of R-shaped clamping die clamping, the gap between the clamping die and the wheel die is not changed.
3. When bending the pipe with soft and thin material, the clamping part should be through the mandrel to prevent deformation.
4. The clamping die and the wheel die rotate to bend the pipe at the same time. The clamping force does not need to be too large, so the clamping force of the clamping die should be properly clamped according to the diameter of the pipe and the thickness of the pipe wall.Otherwise, if the force is too large, the pipe will be deformed (because the wheel mould is forced by the surface, and the clamping mould is clamped by two lines).
5. The clamping part should not be too short when bending the pipe, otherwise it is easy to cause the deformation of the pipe, and ensure 20mm.
In order to improve productivity and save product cost, we design and transform the mold structure.Originally each set of mold needs three kinds of parts, now after the improvement of the original R - shaped clip mold, guide mold to V - shaped clip mold, guide mold.In this way, the general Φ10 ~ Φ18mm seamless pipe bending, clamping die and guide die need not be replaced.If the bend R changes, it doesn't matter, just need to replace the wheel mold.
The 1907-1904-2015
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