CN213919312U

CN213919312U - Special-shaped injection molding pipe fitting structure

Info

Publication number: CN213919312U
Application number: CN202022901028.6U
Authority: CN
Inventors: 周建军
Original assignee: Jiangmen Junsheng Industrial Co ltd
Current assignee: Jiangmen Junsheng Industrial Co ltd
Priority date: 2020-12-04
Filing date: 2020-12-04
Publication date: 2021-08-10
Anticipated expiration: 2030-12-04

Abstract

The utility model relates to a technical field of moulding plastics discloses a heterotypic injection molding pipe fitting structure, including pipe fitting inner bag and rubber coating layer, the pipe fitting inner bag comprises corresponding synthetic holistic two halves, be provided with the bellying on the outer wall of pipe fitting inner bag, the rubber coating layer parcel pipe fitting inner bag outer wall. The mould used in the production process of the special-shaped injection molding pipe fitting structure is very easy to manufacture, the cost of the mould can be effectively reduced, the production is very easy, the production efficiency is quite high, and the quality of the special-shaped pipe fitting is also better.

Description

Special-shaped injection molding pipe fitting structure

Technical Field

The utility model relates to a technical field of moulding plastics especially relates to a heterotypic injection molding pipe fitting structure.

Background

At present, in the injection molding production of pipe fittings such as rubber tubes, plastic tubes and the like, the injection molding manufacturing method is generally used for commonly molding the pipe fittings with the conventional shapes, the injection molding of the special-shaped pipe fittings is difficult, the manufacturing difficulty of an injection mold is quite high, the processing production is not facilitated, the cost is high, the efficiency is low, and the quality of finished products is difficult to control.

SUMMERY OF THE UTILITY MODEL

The utility model aims at: the method for manufacturing the special-shaped injection molding pipe fitting and the structure of the special-shaped injection molding pipe fitting are easy to produce, low in cost, good in efficiency and good in injection molding quality.

In order to solve the technical problem, the utility model provides a method for manufacturing a special-shaped injection molding pipe fitting.

A method for manufacturing a special-shaped injection molding pipe fitting comprises the following steps:

firstly, manufacturing a pipe fitting inner container in a two-half injection molding mode, wherein a protruding part is arranged on the outer wall of the pipe fitting inner container;

two halves of the pipe fitting liner are correspondingly combined into a whole liner;

and thirdly, placing the pipe fitting inner container in a mould, enabling the bulge part to be abutted against the inner wall of the mould, and performing secondary rubber coating on the outside of the pipe fitting inner container by injection molding to obtain a pipe fitting finished product.

As the preferred scheme of the utility model, the two halves of pipe fitting inner bag are provided with the depressed part and the grafting portion of matcing each other respectively to the punishment.

As the preferred scheme of the utility model, the depressed part is for following the stairstepping that the pipe fitting inner bag extends is sunken, grafting portion is for following the stairstepping that the pipe fitting inner bag extends is protruding.

As the preferred scheme of the utility model, the bellying is oblate cylindricality, just the outer wall of pipe fitting inner bag has the several along axial distribution the bellying.

As the utility model discloses a preferred scheme, the bulge lay in the top of the two halves outer wall of pipe fitting inner bag, the axis of bellying with the involution face of pipe fitting inner bag is perpendicular, just the bellying is followed the involution face mutual symmetry of pipe fitting inner bag.

The utility model provides a heterotypic injection molding tubular product structure, includes pipe fitting inner bag and rubber coating layer, the pipe fitting inner bag comprises corresponding synthetic holistic two halves, be provided with the bellying on the outer wall of pipe fitting inner bag, the rubber coating layer parcel pipe fitting inner bag outer wall.

The embodiment of the utility model provides a heterotypic injection molding pipe fitting manufacturing method and heterotypic injection molding pipe fitting structure compare with prior art, its beneficial effect lies in: the die used in the production process of the manufacturing method is very easy to manufacture, the cost of the die can be effectively reduced, the manufacturing method is very easy, the production efficiency is quite high, and the quality of the special-shaped pipe fitting is also better.

Drawings

FIG. 1 is a schematic view of two halves of a pipe liner in an embodiment of the present invention;

FIG. 2 is a schematic view of the structure of FIG. 1 from another perspective;

fig. 3 is a schematic structural diagram of a finished pipe in an embodiment of the present invention;

fig. 4 is a schematic cross-sectional structure diagram of the finished pipe in the embodiment of the present invention.

In the figure, 1, a pipe fitting inner container; 11. a boss portion; 12. a recessed portion; 13. a plug-in part; 2. and (6) an encapsulating layer.

Detailed Description

The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

In the description of the present invention, it is to be understood that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are used in a generic sense, e.g., fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the description of the present invention, it should be further understood that the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the machine or component in question must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be considered as limiting the present invention. It should be understood that the terms "first", "second", etc. are used herein to describe various information, but the information should not be limited to these terms, and these terms are only used to distinguish one type of information from another. For example, "first" information may also be referred to as "second" information, and similarly, "second" information may also be referred to as "first" information, without departing from the scope of the present invention.

Referring to fig. 1-3, the present invention discloses a special-shaped injection molding pipe structure and a method for manufacturing the special-shaped injection molding pipe, including the following steps:

firstly, a pipe fitting inner container 1 is manufactured in a two-half injection molding mode, a protruding portion 11 is arranged on the outer wall of the pipe fitting inner container 1, the protruding portion 11 can be a protrusion in the shape of a column, a hemisphere, a cone, a rectangle, a strip and the like, the protruding portion 11 can extend on the outer wall of the pipe fitting inner container 1 in the radial direction or the circumferential direction, the pipe fitting inner container 1 is in the two-half injection molding mode, the injection molding can be achieved only through a simple mold, and the pipe fitting inner container 1 does not need to be provided with a special-shaped strip shape corresponding to an inner hole of the pipe fitting inner container 1 so as to form a pipe hole in the injection molding process;

two halves of the pipe fitting liner 1 are correspondingly combined into a liner whole and fixed into a pipe fitting prototype;

thirdly, the pipe fitting inner container 1 is placed in a mold, the protruding portion 11 is abutted against the inner wall of the mold, so that the pipe fitting inner container 1 can be fixed in the mold only through the inner wall, secondary encapsulation is performed on the outer side of the pipe fitting inner container 1 through injection molding to form an encapsulating layer 2, a finished pipe fitting is manufactured, the two halves of the pipe fitting inner container 1 are further tightly encapsulated through the encapsulating layer 2 from the outside, the pipe fitting inner container 1 is also used as an injection molding mold core of the encapsulating layer 2, the protruding portion 11 is naturally surrounded by the encapsulating layer 2 and is parallel and level to each other, the structure is quite firm, the mold used in the whole injection molding production process of the special-shaped pipe fitting is quite easy to manufacture, the cost of the mold can be effectively reduced, the production efficiency is quite high, and the quality of the special-shaped pipe fitting is also better.

Referring to fig. 2 and 4, exemplarily, the two halves of the pipe inner container 1 are respectively provided with a concave portion 12 and an inserting portion 13 matched with each other at the matching positions, the two halves of the pipe inner container 1 are respectively and correspondingly placed into the concave portion 12 through the inserting portion 13 on the matching edges, so as to play a role in limiting and fixing during matching, the concave portion 12 can be a concave hole, a groove, a concave position, etc., the inserting portion 13 can also be a corresponding convex pin, a convex strip, a protrusion, etc., and the concave portion 12 and the inserting portion 13 can correspondingly extend or be distributed along the extension of the pipe inner container 1.

Referring to fig. 2 and 4, for example, the recess 12 is a stepped recess extending along the tube liner 1, and the plug 13 is a stepped protrusion extending along the tube liner 1, so the recess 12 and the plug 13 are correspondingly close to the involution edge inside or outside the tube liner 1, and the two are easy to be joined together and the tube liner 1 is easy to be positioned, and the extension of the recess 12 and the plug 13 along the tube liner 1 can make the involution have better structural stress, and in addition, the design of the injection mold is easier, especially the special-shaped tube is small, the fine structure is more difficult to be designed on the mold, for example, if the recess 12 is a groove, the mold is required to be finer at the structure corresponding to the groove, and the cost is not reduced better.

Referring to fig. 1 and 3, for example, the protrusion 11 is a flat cylinder, and a plurality of protrusions 11 are axially distributed on the outer wall of the pipe inner container 1, and generally, the two halves of the pipe inner container 1 are respectively abutted with the wall surface of the mould through the convex parts 11 on the outer wall, so that the pipe fitting liner 1 is fixed in the mould and a space is reserved for injection molding and encapsulation, and the positioning of the pipe fitting liner 1 can be supported in the mould through the reverse acting force of the inner wall of the mould on the bulge part 11, so the bulge part 11 can be distributed and arranged around the outer wall of the pipe fitting liner 1 along the radial direction, for example, two convex parts 11 are distributed on one half of the outer wall of the pipe inner container 1 in a radial direction, at least one convex part 11 is distributed on the other half of the outer wall of the pipe inner container 1 in the radial direction, therefore, the limiting position of automatic centering in at least three directions is formed, the included angles among the convex parts 11 can be arranged at any intervals, and the injection molding and the encapsulation are very convenient.

Referring to fig. 1 and 3, exemplarily, the protruding portions 11 are distributed on the top ends of the two half outer walls of the tube inner container 1, the central axis of the protruding portion 11 is perpendicular to the mating surface of the tube inner container 1, and the protruding portions 11 are symmetrical to each other along the mating surface of the tube inner container 1, so that the two halves of the tube inner container 1 are pressed together perpendicularly along the mating surface by the reaction force of the protruding portion 11 received by the inner wall of the mold when the tube inner container 1 is in the mold, the symmetrical protruding portions 11 correspondingly support the tube inner container 1 to ensure uniform stress, and the tube inner container 1 only needs the protruding portions 11 with symmetrical sides, if the protruding portions 11 on the two halves of the tube inner container 1 are staggered from each other along the axial direction, although the protruding portions can also be positioned in the mold, the tube inner container 1 can have corresponding internal stress after being encapsulated.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and replacements can be made without departing from the technical principle of the present invention, and these modifications and replacements should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides a heterotypic injection molding tubular product structure which characterized in that: the pipe fitting inner container comprises a pipe fitting inner container and an encapsulating layer, wherein the pipe fitting inner container is composed of two halves which are correspondingly combined into a whole, a protruding portion is arranged on the outer wall of the pipe fitting inner container, and the encapsulating layer wraps the outer wall of the pipe fitting inner container.

2. The structure of a profile injection molded pipe as claimed in claim 1, wherein: the two halves of the pipe fitting liner are respectively provided with a concave part and an inserting part which are matched with each other at the involution position.

3. A profile injection molded tubular article structure according to claim 2, wherein: the depressed part is along the stairstepping that the pipe fitting inner bag extends is sunken, grafting portion is along the stairstepping that the pipe fitting inner bag extends is protruding.

4. A profile injection molded pipe structure according to any one of claims 1 to 3, wherein: the protruding parts are flat cylinders, and a plurality of protruding parts are axially distributed on the outer wall of the pipe fitting inner container.

5. The structure of a profile injection molded pipe as claimed in claim 4, wherein: the bulge is distributed at the top ends of the two half outer walls of the pipe fitting inner container, the central axis of the bulge is perpendicular to the fitting surface of the pipe fitting inner container, and the bulge is symmetrical to the fitting surface of the pipe fitting inner container.