CN113586811B

CN113586811B - Injection molding type RTP plastic composite pressure pipe fitting and machining process thereof

Info

Publication number: CN113586811B
Application number: CN202110749842.7A
Authority: CN
Inventors: 刘俊峰; 刘文江; 万刚; 田祥军
Original assignee: Anhui Glant New Material Co Ltd
Current assignee: Anhui Glant New Material Co Ltd
Priority date: 2021-07-02
Filing date: 2021-07-02
Publication date: 2022-12-27
Anticipated expiration: 2041-07-02
Also published as: CN113586811A

Abstract

The invention discloses an injection molding type RTP (real time processing) plastic composite pressure pipe fitting and a processing technology thereof, and the injection molding type RTP plastic composite pressure pipe fitting comprises an inner pipe, a glass fiber reinforced composite layer and an outer pipe, wherein the glass fiber reinforced composite layer is wound on the outer surface of the inner pipe, the outer pipe is wrapped on the outer surface of the glass fiber reinforced composite layer, a bearing table is arranged in an inner cavity of the inner pipe, a heating resistance wire is embedded in the inner cavity of the inner pipe, a binding post is fixedly connected to the outer surface of the outer pipe, and the binding post is electrically connected with the heating resistance wire. The injection molding type RTP plastic composite pressure pipe fitting and the processing technology thereof are improved on the basis of the existing plastic electric melting pipe fitting, and make up for the blank that the pressure bearing range of the traditional plastic electric melting pipe fitting is more than 3.0 MPa.

Description

Injection molding type RTP plastic composite pressure pipe fitting and machining process thereof

Technical Field

The invention relates to the technical field of plastic pipe fittings, in particular to an injection molding type RTP plastic composite pressure pipe fitting and a processing technology thereof.

Background

In the prior art, the pipe fittings are generally used for long-distance transmission of gas and fluid, but the general pipe fittings are made of PVC plastics, when the pipe fittings are buried in the ground or arranged on the ground for discharge, the pipe fittings are often broken, the broken conditions are influenced by external environment and are caused by external force cutting, however, once the pipe fittings are cut off or broken, or a large amount of resource loss occurs, if the pipe fittings are water pipes, a large amount of water flows out, so that the water resource is seriously wasted, the pipes are generally in direct contact with the bottom surface of the pipe, and the pipe fittings are in hard contact with the bottom surface of the pipe, so that the pressure resistance is poor, and once the pipe fittings are squeezed, the pipe fittings are likely to break, and the pressure resistance is poor.

The existing plastic pipe fitting is not enough in strength, and is broken by squeezing the pipe fitting due to internal pressure, and the installation and connection are not convenient and fast due to the thin outer wall in the installation process of the pipe fitting, so that the difficulty is increased for the production and the manufacture of the pipe fitting.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides an injection molding type RTP plastic composite pressure pipe fitting and a processing technology thereof, which solve the problems that the strength of the pipe fitting is often insufficient when the existing plastic pipe fitting is used, the pipe fitting is broken by internal pressure of the pipe fitting, and the installation and connection are not convenient and fast due to the thin outer wall in the installation process of the pipe fitting, so that the difficulty is increased for the production and the manufacture of the pipe fitting.

In order to achieve the purpose, the invention is realized by the following technical scheme: the utility model provides an injection type RTP plastics composite pressure pipe fitting, includes inner tube, fine reinforcing composite bed of glass and outer tube, fine reinforcing composite bed winding of glass is on the surface of inner tube, the outer tube parcel is on the surface of fine reinforcing composite bed of glass, the inner chamber both ends of inner tube are provided with the bearing platform, the inner chamber embedding of inner tube has the heating resistor silk, outer tube fixedly connected with terminal, terminal and heating resistor silk electric connection.

As a further scheme of the invention: the glass fiber reinforced composite layer is prepared by winding a continuous glass fiber prepreg tape on the surface of the plastic inner pipe in an inclined angle.

As a further scheme of the invention: the glass fiber reinforced composite layer is an injection molding pipe fitting which is provided with a pressure bearing layer and an inner layer and an outer layer which are made of plastic materials and can bear high pressure, and the glass fiber reinforced composite layer can be divided into a straight pipe fitting, an elbow pipe fitting, a three-way pipe fitting and the like according to the appearance of the pipe fitting.

As a further scheme of the invention: the inner pipe and the outer pipe are made of plastic materials.

The invention also discloses a processing technology of the injection molding type RTP plastic composite pressure pipe fitting, which comprises the following steps:

winding a continuous glass fiber prepreg tape on a shaping mold in an inclined angle to manufacture a glass fiber reinforced composite layer insert;

step two, extruding and coating the electric heating copper wire, and winding the electric heating copper wire on a shaping mold to manufacture a heating resistance wire insert;

and step three, respectively installing the glass fiber reinforced composite layer insert and the heating resistance wire insert manufactured in the step one and the step two on an injection mold, pouring the hot-melted PE100 material into an inner cavity of a forming box through an injection port of injection molding equipment, turning on a motor, driving a fan of an injection molding machine body to rotate by the motor, blowing the PE100 material of the forming box by the fan to form on the surface and the inner cavity of the glass fiber reinforced layer, rotating a turntable after primary forming, taking out the pipe fitting in the forming box by the turntable, outputting the pipe fitting to an injection molding outlet from the left end of the turntable, cooling the pipe fitting by a cooling port on the surface of the turntable when the pipe fitting is output, guiding the pipe fitting out through a limiting rod after cooling, and performing injection molding to manufacture the RTP plastic composite pressure pipe fitting.

Advantageous effects

The invention provides an injection molding type RTP plastic composite pressure pipe fitting and a processing technology thereof. Compared with the prior art, the method has the following beneficial effects:

1. an injection molding type RTP plastic composite pressure pipe fitting and a processing technology thereof are disclosed, the injection molding type RTP plastic composite pressure pipe fitting comprises a composite inner pipe, a glass fiber reinforced layer and a composite outer pipe, the glass fiber reinforced layer is wound on the surface of the composite inner pipe, the composite outer pipe is wrapped on the surface of the glass fiber reinforced layer, a bearing table is arranged in the inner cavity of the composite inner pipe, a heating resistance wire is embedded in the inner cavity of the composite inner pipe, the composite outer pipe is fixedly connected with a binding post, and the binding post is electrically connected with the heating resistance wire; the RTP electric melting pipe fitting adopts polyethylene and a glass fiber reinforced prepreg tape as a base body, and is an improved novel flexible high-pressure composite material pipe fitting, when in connection, outer layer plastic of the pipe fitting and inner layer plastic of the pipe fitting are melted by using a heating body on the inner layer of the pipe fitting, the pipe fitting and the pipe fitting are reliably connected together, the reinforced glass fiber prepreg tape is wound on the inner layer of the pipe body at an inclined angle by adopting special professional equipment, and then the PE100 material is used for injection molding or extrusion coating to form a whole, so that the stress can be uniformly dispersed in the axial direction and the circumferential direction when the pipe fitting is subjected to internal pressure, and a stronger safety factor is adopted when the winding layer number of the glass fiber reinforced prepreg tape is determined, thereby greatly improving the safety and reliability of the pipe body; the surface is cleaned, the pipe fittings are inserted and connected in a power-on welding mode, the flexibility of the pipe is guaranteed, the rigidity of the body is good, the external change in the installation process can be borne, the deformation cannot occur, and the welding time of the thin-wall pipe connector is shortened; the electric smelting erection joint is convenient, greatly increases the weld zone area for it is more reliable to connect, does not have the influence of welding ring to the pipeline latus rectum.

2. The invention relates to an injection molding type RTP plastic composite pressure pipe fitting and a processing technology thereof, wherein an injection molding device comprises an injection molding machine body, the bottom of the injection molding machine body is fixedly connected with a rack through a bolt, the surface of the rack is in threaded connection with a support column, the support column penetrates through the top of the rack and extends to the bottom of the rack, the bottom of the support column is fixedly connected with a support seat, the left side of the injection molding machine body is fixedly connected with a forming box, the top of the forming box is fixedly connected with an injection molding port, the left side of the forming box is rotatably connected with a turntable, the left end of the turntable is fixedly connected with an injection molding outlet, the surface of the turntable is fixedly connected with a limit rod, the surface of the turntable is provided with a cooling port, and the right side of the injection molding machine body is fixedly connected with a motor.

Drawings

FIG. 1 is an exploded view of the tubular structure of the present invention;

FIG. 2 is a schematic view of the structural connection of the pipe members of the present invention;

FIG. 3 is an exploded cross-sectional view of the tubular structure of the present invention;

FIG. 4 is a cross-sectional view of a tube structure according to the present invention;

FIG. 5 is a schematic structural connection diagram of the injection molding machine according to the present invention;

fig. 6 is a front view showing the structure of the injection molding machine of the present invention.

In the figure: 1. compounding an inner pipe; 2. a fiberglass reinforced layer; 3. compounding an outer pipe; 4. a binding post; 5. heating resistance wires; 11. an injection molding machine body; 12. a frame; 13. a support pillar; 14. a supporting seat; 15. a forming box; 16. an injection molding port; 17. a turntable; 18. an injection molding outlet; 19. a limiting rod; 20. a cooling port; 21. a motor; 22. a reinforcing plate.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-6, the present invention provides a technical solution: the utility model provides a type of moulding plastics RTP plastics combined pressure pipe fitting, including inner tube 1, fine reinforcing composite bed 2 of glass and outer tube 3, fine reinforcing composite bed 2 winding of glass is on the surface of

inner tube

1, 3 parcels of outer tube are on the surface of fine reinforcing composite bed 2 of glass, the inner chamber both ends of inner tube 1 are provided with the bearing platform, the inner chamber embedding of inner tube 1 has

heating resistor silk

5, 3 fixedly connected with terminals 4 of outer tube,

terminals

4 and 5 electric connection of heating resistor silk, fine reinforcing composite bed 2 of glass is that it twines at the plastics inner tube surface and makes to be the angle of inclination through continuous glass fiber prepreg tape, fine reinforcing composite bed 2 of glass is the bearing layer, the inlayer and the ectonexine can bear highly compressed injection molding pipe fitting for plastic materials, can be the straight-through pipe fitting according to the pipe fitting appearance, the elbow pipe fitting, tee bend pipe fitting etc., inner tube 1 and outer tube 3 are the plastics material.

winding a continuous glass fiber prepreg tape on a shaping mold at an inclined angle to manufacture a glass fiber reinforced composite layer 2 insert;

step two, extruding and coating the electric heating copper wire, and winding the electric heating copper wire on a shaping mold to manufacture a heating resistance wire 5 insert;

step three, respectively installing the glass fiber reinforced composite layer 2 insert and the heating resistance wire 5 insert manufactured in the step one and the step two on an injection mold, pouring the hot-melted PE100 material into the inner cavity of a forming box 15 through an injection port 16 of injection molding equipment, turning on a motor 21, driving a fan of an injection molding machine body 11 to rotate by the motor 21, blowing the PE100 material of the forming box 15 by the fan to form on the surface and the inner cavity of the glass fiber reinforced layer 2, rotating a turntable 17 after primary forming, taking out the pipe fittings in the forming box 15 by the turntable 17, outputting the pipe fittings to an injection molding outlet 18 from the left end of the turntable 17, cooling the pipe fittings by a cooling port 20 on the surface of the turntable 17 when outputting the pipe fittings, guiding out for injection molding through a limiting rod 19 after cooling, manufacturing the RTP plastic composite pressure pipe fitting reinforced layer 2, winding the glass fiber reinforced polypropylene prepreg tape into an inclined angle on the surface of a plastic inner pipe by adopting a continuous glass fiber reinforced polypropylene, the composite pipe fitting comprises a fiber reinforced direct pipe fitting, a continuous glass fiber prepreg tape reinforced PE100 composite pipe fitting, a sealing composite inner pipe 1, a reinforcing continuous glass fiber prepreg tape core layer and a protecting composite outer pipe 3, wherein the three layers are bonded and compounded into a whole, the middle layer is the composite pipe fitting which is formed by winding a glass fiber prepreg tape on an inner pipe body at an oblique angle through special equipment and takes the glass fiber reinforced layer 2 as a bearing layer, the upper step and the lower step of the inner wall of a pipe fitting port as a bell mouth, the composite pipe fitting comprises the fiber reinforced direct pipe fitting, a glass fiber reinforced elbow and a tee pipe fitting, and the composite inner pipe 1 and the composite outer pipe 3 are made of PE100 plastic materials;

the invention also discloses processing equipment of the injection molding type RTP plastic composite pressure pipe fitting, which comprises an injection molding machine body 11, wherein the bottom of the injection molding machine body 11 is fixedly connected with a rack 12 through bolts, the surface of the rack 12 is in threaded connection with support columns 13, the support columns 13 penetrate through the top of the rack 12 and extend to the bottom of the rack, the bottom of the support columns 13 is fixedly connected with a support seat 14, the left side of the injection molding machine body 11 is fixedly connected with a forming box 15, the top of the forming box 15 is fixedly connected with an injection molding opening 16, the left side of the forming box 15 is rotatably connected with a rotary table 17, the left end of the rotary table 17 is fixedly connected with an injection molding outlet 18, the surface of the rotary table 17 is fixedly connected with a limit rod 19, the surface of the rotary table 17 is provided with a cooling opening 20, the right side of the injection molding machine body 11 is fixedly connected with a motor 21, the support columns 13 are uniformly distributed on the surface of the rack 12, the bottom of the motor 21 and the bottom of the forming box 15 are both fixedly connected with the top of the rack 12 through bolts, reinforcing plates 22 are fixedly connected with the bottom of the rack 12, a plurality of the reinforcing plates 22, and the reinforcing plates 22 are uniformly distributed on the bottom of the rack 12.

When in use, the continuous glass fiber prepreg tape is wound on the shaping mould at an inclined angle to manufacture the glass fiber reinforced composite layer 2 insert; extruding and coating an electric heating copper wire, and winding the electric heating copper wire on a shaping die to manufacture an insert of a heating resistance wire 5; respectively installing the glass fiber reinforced composite layer 2 insert and the heating resistance wire 5 insert which are manufactured in the first step and the second step on an injection mold, pouring a hot-melted PE100 material into an inner cavity of a forming box 15 through an injection port 16 of injection equipment, opening a motor 21, driving a fan of an injection molding machine body 11 to rotate by the motor 21, blowing the PE100 material of the forming box 15 by the fan to form on the surface and the inner cavity of the glass fiber reinforced layer 2, rotating a turntable 17 after primary forming, taking out the pipe fittings in the forming box 15 by the turntable 17, outputting the pipe fittings to an injection molding outlet 18 from the left end of the turntable 17, cooling the pipe fittings by a cooling port 20 on the surface of the turntable 17 when outputting the pipe fittings, guiding the pipe fittings out by a limiting rod 19 after cooling, and performing injection molding to manufacture the RTP plastic composite pressure pipe fitting;

equipment installation: fixedly connecting the bottom of an injection molding machine body 11 to a machine frame 12 through bolts, connecting the surface of the machine frame 12 to a support column 13 through threads, penetrating the support column 13 through the top of the machine frame 12 and extending to the bottom of the machine frame, fixedly connecting the bottom of the support column 13 to an upper support seat 14, fixedly connecting the left side of the injection molding machine body 11 to a forming box 15, fixedly connecting the top of the forming box 15 to an injection molding port 16, rotatably connecting the left side of the forming box 15 to an upper rotary table 17, fixedly connecting the left end of the rotary table 17 to an injection molding outlet 18, fixedly connecting the surface of the rotary table 17 to a limit rod 19, arranging an upper cooling port 20 on the surface of the rotary table 17, and fixedly connecting the right side of the injection molding machine body 11 to an upper motor 21;

starting injection molding: and putting the raw materials in the step into injection molding equipment for injection molding production.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "left", "right", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation and a specific orientation configuration and operation, and thus, should not be construed as limiting the present invention. Furthermore, "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate a number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate member, or they may be connected through two or more elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Although an embodiment of the present invention has been described in detail, the description is only a preferred embodiment of the present invention, and should not be considered as limiting the scope of the invention, and all equivalent changes and modifications made within the scope of the present invention should be covered by the present invention.

Claims

1. The utility model provides an injection type RTP plastics composite pressure pipe fitting which characterized in that: the glass fiber reinforced plastic composite pipe comprises an inner pipe (1), a glass fiber reinforced composite layer (2) and an outer pipe (3), wherein the glass fiber reinforced composite layer (2) is wound on the surface of the inner pipe (1), the outer pipe (3) is wrapped on the surface of the glass fiber reinforced composite layer (2), bearing tables are arranged at two ends of an inner cavity of the inner pipe (1), a heating resistance wire (5) is embedded into the inner cavity of the inner pipe (1), the outer pipe (3) is fixedly connected with a binding post (4), and the binding post (4) is electrically connected with the heating resistance wire (5);

the processing technology of the injection molding type RTP plastic composite pressure pipe fitting is characterized in that: the method comprises the following steps:

winding a continuous glass fiber prepreg tape on a shaping mold at an inclined angle to manufacture a glass fiber reinforced composite layer (2) insert;

step two, winding the electric heating copper wire on a shaping die after extruding and coating to manufacture an insert of a heating resistance wire (5);

and step three, respectively installing the inserts of the glass fiber reinforced composite layer (2) and the heating resistance wire (5) manufactured in the step one and the step two on an injection mold, pouring the hot-melted PE100 material into an inner cavity of a forming box (15) through an injection molding port (16) of injection molding equipment, opening a motor (21), driving a fan of an injection molding machine body (11) to rotate by the motor (21), blowing the PE100 material of the forming box (15) to form on the surface and the inner cavity of the glass fiber reinforced composite layer (2) by the fan, rotating a turntable (17) after primary forming, taking out the pipe fittings in the forming box (15) by the turntable (17), outputting the pipe fittings to an injection molding outlet (18) from the left end of the turntable (17), cooling the pipe fittings by a cooling port (20) on the surface of the turntable (17), cooling the pipe fittings, guiding the pipe fittings out through a limiting rod (19) after cooling, and manufacturing the RTP plastic composite pressure pipe fitting.

2. The injection molding type RTP plastic composite pressure pipe fitting of claim 1, wherein: the glass fiber reinforced composite layer (2) is prepared by winding a continuous glass fiber prepreg tape on the surface of the plastic inner pipe in an inclined angle.

3. The injection molding type RTP plastic composite pressure pipe fitting of claim 1, wherein: the glass fiber reinforced composite layer (2) is a pressure bearing layer.

4. The injection molding type RTP plastic composite pressure pipe fitting of claim 1, wherein: the inner pipe (1) and the outer pipe (3) are both made of plastic materials.