Plastic pipe end face bending machine

Abstract

The invention discloses a plastic pipe end face collaring machine, relates to a processing device for plastic pipes, and provides a plastic pipe end face collaring machine which is simple in structure, is convenient to carry and use, and can be used for processing flanges and turnup edges or integrally molding flanges and turnup edges on end faces of pipes without being effected by the construction environment and the restriction of the length of a conveying pipe at any occasion. The plastic pipe end face collaring machine is provided with an engine base, a fixture, a heating cover, electric heat pipes, an extruding and molding disc and a push-pull cylinder, wherein the fixture is installed on the engine base; the heating cover is arranged behind the fixture, and is provided with a hollow cavity and heat dissipation holes; the electric heat pipes are provided with shells and electric heat elements arranged in the shells, and are connected and communicated with the heating cover; the extruding and molding disc is arranged behind the fixture, and is provided with an interlining and an annular groove which surrounds the interlining and is used for molding curve edges; the heating cover covers the outer part of the extruding and molding disc in the radial direction; the push-pull cylinder is installed on the engine base; a piston of the push-pull cylinder is connected with the rear end of the extruding and molding disc which is matched with the heating cover in a sliding mode via the arrangement of slide rails.

Description

technical field [0001] The invention relates to a processing equipment for plastic pipes, in particular to a plastic pipe end face bending machine. Background technique [0002] Plastic pipes are widely used, such as water supply and drainage pipes. The products produced by the existing plastic pipes are all straight pipes, and the plastic pipes cannot be produced on-line with curved end (flange) products. Since each section of plastic pipe needs to be connected during construction, the current connection methods generally have the following two types: [0003] First, at present, the connection between PE pipes needs to be connected by hot-melt butt welding. The butt joint can only be directly heated and welded at the pipe end. The thickness of the welded joint is actually only a few millimeters thick, and the welding requirements for construction technology are relatively high. The disadvantage is that during welding, the operating pressure and temperature need to be very...

AI Technical Summary

Problems solved by technology

[0003] First, at present, the connection between PE pipes needs to be connected by hot-melt butt welding. The butt joint can only be directly heated and welded at the pipe end. The thickness of the welded joint is actually only a few millimeters thick, and the welding requirements for the construction process are relatively high.

The disadvantage is that during welding, the operating pressure and temperature need to be very emphasized. Excessive force or high temperature will cause excessive melting of the pipe, and uneven weld bumps and seams will easily occur on the inner wall of the pipe, resulting in shrinkage and flow path. It becomes smaller, and at the same time, it is easy to produce defect areas of piled materials. After a long period of time, it is bound to form a dead angle at the hot-melt welding point and cause pipeline blockage

Disadvantages: 1. The welding quality is not easy to check, and it is easily affected by factors such as climate, environment, and human factors; 2. The investment in equipment is high and the volume and weight are large; 3. It is only suitable for the butt connection of pipe diameters larger than 110mm, and small diameters cannot Implement docking; 4. The processing length is limited by the tool; 5. The hot-melt butt joint connection is a fusion connection (also a rigid connection), and once it faces an earthquake, the fracture of the connection end is very serious, and the dislocation is easy to break

Disadvantages: 1. The welding quality is not easy to check, and it is easily affected by climate, environment, human factors and other factors; 2. The investment in equipment is high and the volume and weight are large; 3. It is only suitable for butt joints with pipe diameters larger than 110mm, and small diameters cannot be used for butt joints ; 4. The processing length is limited by the tool

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