CN104626526A

CN104626526A - Manufacturing method of socket flaring pipe fitting formed by winding polyethylene winding structure wall drainage pipe material

Info

Publication number: CN104626526A
Application number: CN201510029953.5A
Authority: CN
Inventors: 倪士民
Original assignee: Individual
Current assignee: Individual
Priority date: 2015-01-21
Filing date: 2015-01-21
Publication date: 2015-05-20

Abstract

The invention discloses a manufacturing method of a socket flaring pipe fitting formed by winding a polyethylene winding structure wall drainage pipe material. The socket flaring pipe fitting is manufactured from plastic mold materials produced in advance on a specific mold by a winding and welding molding method. The manufacturing method can be used for meeting the requirements of high injection molding amount and high back pressure, which cannot be completed by adopting an injection molding extrusion molding technology in the prior; the inner wall of the manufactured pipe fitting is relatively smooth and level; the circumference degree of the pipe fitting is relatively high; the leakage hazard of a seal point can be reduced.

Description

The preparation method of the Wrapping formed socket joint flared pipe fitting of a kind of polyethylene spirally enwound structure-wall drainage pipe

Technical field

The present invention relates to plastic flared tube, particularly a kind of preparation method of heavy caliber polyethylene spirally enwound structure-wall drainage pipe socket joint flared pipe fitting.

Background technology

Along with all types of plastic tubing rises gradually at home, traditional pipe of concrete, concrete reinforced pipe and cast iron pipe is replaced to become a kind of trend.Relative to pipe of concrete, concrete reinforced pipe and cast iron pipe, plastic pipe, under identical withstand voltage condition, has that quality is light, corrosion-resistant, low stain or a free of contamination remarkable advantage, and plastic pipe is also longer for service life.What current plastic pipe was relatively more conventional is PVC, although price is lower, there is heavier mass, withstand voltage deficiency, with shortcomings such as a small amount of pollutions.And HDPE solid wall pipe, although function admirable, cost is higher, waste material.So a kind of novel plastic winding structural wall tube arises at the historic moment, and it maintains the advantage of common plastics tubing, overcome again their some shortcomings simultaneously.

But the plastic winding structural wall tube of prior art can only produce straight wall tube material because of technical reason, thus there is certain difficulty when constructing, the connection between tubing comparatively bothers time-consuming.The connected mode of current employing generally has sweat soldering, the connected modes such as metal clip connection, these connected modes carry out connection construction early stage needed for preparation more loaded down with trivial details, connection operation is installed more complicated, also longer during installation fee, and because construction interface is more, after too increasing tubing installation there is the risk of seepage in sealing place.At present, a kind of winding structure tube with enlarging connected mode solves the problems referred to above, but the flared pipe fitting of this winding structure tube with enlarging mainly adopts Shooting Technique to produce, Shooting Technique is satisfiable for the production carrying out small-bore pipe fitting, because small-bore pipe fitting is lightweight, extrusion capacity is little, mould back pressure is little, produce and still can apply, but buried drain pipe material bore is larger, DN300mm has been small-bore in drainage pipeline, this has been difficult to produce for Shooting Technique, and due to the reason of shot, product quality is difficult to ensure, the extrusion capacity of large-caliber pipe fittings is larger, mould back pressure is large, existing equipment is difficult to meet.Because large shot injection-moulding device is expensive, part producing producer replaces injection machine to produce this kind of large-caliber pipe fittings with large extrusion capacity extruder, and because extruder back pressure is very low, product quality is very unstable.

Summary of the invention

Object of the present invention, is to overcome above-mentioned prior art Problems existing, provides a kind of preparation method adopting Wrapping formed a kind of heavy caliber polyethylene spirally enwound structure-wall drainage pipe socket joint flared pipe fitting.

The object of the present invention is achieved like this: a kind of preparation method of heavy caliber polyethylene spirally enwound structure-wall drainage pipe socket joint flared pipe fitting.Adopt Wrapping formed method to make, comprise the following steps:

A. produce mould according to the shape size of the heavy caliber plastic flared tube member of required making, make the outer shape of this mould corresponding with the shape size of heavy caliber plastic flared tube member with size;

B. above-mentioned mould is connected on the rotating shaft of forming machine;

C. the section bar of the plastics produced in advance is wrapped on mould, while winding, uses plastic welding rod welding fabrication;

D. continuing by mold cools down under the state rotated, take out at mould, the Wrapping formed pipe fitting of surface formation, is heavy caliber plastic flared tube member.

The present invention, owing to have employed above technical scheme, makes it compared with prior art, has following advantage and disadvantage:

A. owing to adopting winding shaping process, can solve the requirement of large shot and the large back pressure using injection molding process to complete, heavy caliber pipe socket joint flared pipe fitting is produced becomes possibility.

B. owing to adopting winding shaping process, the inwall of pipe fitting is more smooth, and socket joint connection reliability is stronger.

C. for being both Wrapping formed structure-wall pipe material, supporting application, decreases the system suitability problem that the goods produced because there is various processes in pipe-line system bring.

D. owing to adopting winding shaping process, pipe fitting circular degree is higher, and pipe fitting rigidity under equivalent material weight is higher, stronger from round.

The preparation method of plastic socket pipe fitting of the present invention, for making heavy caliber spigot-and-socket winding structure drainage pipe, solves the difficult problem that heavy caliber winding structure drainage pipe is made into spigot-and-socket pipe.

Accompanying drawing explanation

The preparation method schematic diagram of a kind of heavy caliber polyethylene spirally enwound structure-wall of Fig. 1 drainage pipe socket joint flared pipe fitting

Detailed description of the invention

The preparation method of the plastic socket pipe fitting in the present invention can 1 be described as follows by reference to the accompanying drawings: first started by wrapping machine in equipment 1, start to rotate vertically, drive and be placed in its pipe mold 2 axially, it is made to produce axial-rotation, along with the rotation of mould, the plastic material 3 made in advance is wrapped on mould, and extrudes welding rod 5 by plastic material welding fabrication with welding rod extruder 4 simultaneously.And simultaneously cooling and shaping, after completing the winding welding of die surface presumptive area, will be placed in the pipe fitting break away from moulds being wound around welding fabrication of die surface, finishing round edge, namely obtains plastic socket pipe fitting product.

Claims

1. the preparation method of the Wrapping formed socket joint flared pipe fitting of a kind of polyethylene spirally enwound structure-wall drainage pipe, it is characterized in that: adopt the method being wound around welding fabrication to make, comprise the following steps:

B. above-mentioned mould is connected on the rotating shaft of shaping 6 machines;

C. the section bar of the plastics produced in advance is wrapped on mould, with plastic welding rod welding also cooling forming while winding;

D. continuing by mold cools down under the state rotated, the demoulding, the Wrapping formed pipe fitting that surface is formed, is heavy caliber plastic flared tube member.

2. the preparation method of the Wrapping formed socket joint flared pipe fitting of polyethylene spirally enwound structure-wall drainage pipe as claimed in claim 1, is characterized in that: described pipe fitting mold is identical with pipe shape, includes the straight length suitable with tubing bore and socket joint flared section.

3. the preparation method of the Wrapping formed socket joint flared pipe fitting of polyethylene spirally enwound structure-wall drainage pipe as claimed in claim 1, it is characterized in that: the described plastic material cross section produced in advance can be circular, oval, the square of with or without chamfering, fillet, rectangle, the polygon such as trapezoidal, or by these form cross sections a mutual or more than section bar formed.