Injection molding pipeline joint

Abstract

The utility model discloses an injection molding pipeline joint which comprises a pipeline main body and an injection molding main body, the pipeline main body is provided with at least two pipeline parts and at least one bending part, one end part of one pipeline part is connected with the end part of the other pipeline part, and the bending part is formed at the connecting part; a plurality of pipe wall holes are formed in the wall of each pipeline part, the pipe wall holes are distributed in the parts, away from the bent parts, of the pipeline parts, and the pipeline main body is wrapped with the injection molding main body.

Description

TECHNICAL FIELD

[0001] The utility model relates to pipeline joint field especially relates to injection molding pipeline joint. BACKGROUND

[0002] Pipeline joint is a kind of joint of two pipelines of different extension direction, and pipeline joint is usually made of plastic or steel, wherein the pipeline joint of steel will be corroded to different degrees whether exposed to air or buried in land, so the pipeline joint of steel will be injection molded on surface to reduce the degree of corrosion.

[0003] In prior art, pipeline joint needs to be placed in mold and inserted into interface by two columnar elements during injection molding, so that rubber compound only wraps the wall of pipeline joint and does not block the pipeline.However, since the curved portion of pipeline joint is welding zone, after columnar element is inserted into interface, injected rubber compound is easy to gather in the curved portion of pipeline joint, and uneven distribution of rubber compound is easy to occur, and rubber compound will generate scouring force on the curved portion of pipeline joint, leading to damage of pipeline joint. SUMMARY

[0004] To achieve at least one advantage of the utility model, the utility model provides injection molding pipeline joint, which comprises:

[0005] Pipeline main body, the pipeline main body has at least two pipeline parts and at least one curved portion, wherein one end of one pipeline part is connected with the end of another pipeline part and forms the curved portion at the connecting portion, and a plurality of pipe wall holes are formed on the wall of each pipeline part, and the plurality of pipe wall holes are distributed on the part of the pipeline part away from the curved portion;

[0006] Injection molding main body, the injection molding main body is wrapped outside the pipeline main body and forms the pipeline with predetermined inner diameter.

[0007] According to an embodiment of the utility model, a plurality of near-bend holes are formed on the part of the pipeline main body close to the curved portion, the aperture of the near-bend hole is not greater than the aperture of the pipe wall hole, and the aperture of the near-bend hole close to the curved portion is smaller than the aperture of the near-bend hole away from the curved portion.

[0008] According to an embodiment of the utility model, the plurality of pipe wall holes are evenly distributed in row on the part of the pipeline wall away from the curved portion, and the distance between any pipe wall hole in each row of pipe wall holes and the curved portion is equal, and the near-bend holes are evenly distributed in row on the part of the pipeline wall close to the curved portion, and the distance between any near-bend hole in each row of near-bend holes and the curved portion is equal.

[0009] According to an embodiment of the present application, the number of the near-bending holes on each pipeline part is set to four rows.

[0010] According to an embodiment of the present application, the wall thickness of the pipeline part near the bending part is greater than the wall thickness of the pipeline part far from the bending part, and the wall thickness of the part of the injection molding main body near the bending part is less than the wall thickness of the part of the injection molding main body far from the bending part. BRIEF DESCRIPTION OF DRAWINGS

[0011] Fig. 1 The structure schematic diagram of the injection molding pipeline joint is shown.

[0012] Fig. 2 The structure schematic diagram of the pipeline main body of the injection molding pipeline joint is shown.

[0013] Fig. 3 The cross-sectional schematic diagram of the injection molding pipeline joint is shown.

[0014] Fig. 4 The cross-sectional schematic diagram of the pipeline main body of the injection molding pipeline joint is shown. DETAILED DESCRIPTION

[0015] The following description is provided to disclose the present application so that those skilled in the art can implement the present application. The preferred embodiments in the following description are only examples, and other obvious modifications can be thought of by those skilled in the art. The basic principles of the present application defined in the following description can be applied to other embodiments, modifications, improvements, equivalents and other technical solutions without departing from the spirit and scope of the present application.

[0016] Those skilled in the art should understand that in the disclosure of the present application, the orientations or positional relationships indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like are based on the orientations or positional relationships shown in the drawings, which are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore the above terms cannot be understood as a limitation of the present application.

[0017] It can be understood that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of one element can be one, and in another embodiment, the number of the element can be multiple, and the term "one" cannot be understood as a limitation on the number.

[0018] REFERENCE Figs. 1 to 4, the injection molding pipe joint according to the preferred embodiment of the utility model will be described in detail below, the injection molding pipe joint comprises a pipe body 10 and an injection molding body 20. The injection molding body 20 is wrapped outside the pipe body 10 and forms a pipe with a predetermined inner diameter to protect the pipe body 10.

[0019] The pipe body 10 has at least two pipe sections 11 and at least one bending section 12, wherein one end of one pipe section 10 is connected with the end of another pipe section 11 and forms the bending section 20 at the connecting part. A plurality of pipe wall holes 1101 are formed on the wall of each pipe section 11, and the plurality of pipe wall holes 1101 are distributed on the part of the pipe section 11 away from the bending section 12. When the pipe body 10 is injection molded, the rubber passes through the pipe wall holes 1101 of the pipe section 10, which reduces the pressure of the rubber on the pipe wall of the pipe section 10 and also reduces the weight of the injection molding pipe joint as a whole, thereby facilitating manual transportation by the staff.

[0020] Preferably, a plurality of near-bending holes 1102 are formed on the part of the pipe wall of each pipe body 10 close to the bending section 12, the diameter of the near-bending holes 1102 is not greater than the diameter of the pipe wall holes 1101, and the diameter of the near-bending holes 1102 close to the bending section 12 is smaller than the diameter of the near-bending holes 1102 away from the bending section 12.

[0021] Preferably, the plurality of pipe wall holes 1101 are uniformly distributed in rows on the part of the pipe wall of the pipe section 11 away from the bending section 12, and the distance between any pipe wall hole 1101 in each row of pipe wall holes 1101 and the bending section 12 is equal. The near-bending holes 1102 are uniformly distributed in rows on the part of the pipe wall of the pipe section 11 close to the bending section 12, and the distance between any near-bending hole 1102 in each row of near-bending holes 1102 and the bending section 12 is equal, so that the pipe wall of the pipe section 11 is uniformly stressed.

[0022] Preferably, the number of near-bending holes 1102 on each pipe section 11 is set to four rows, so that the overall resistance of the pipe section 11 is qualified while the space for the pipe wall holes 1101 is saved.

[0023] The skilled in the art can understand that the bending portion 12 of the pipe body 10 is usually welded to ensure that the two pipe portions 11 are not separated, and the bending portion 12 is usually at the lowest position when the pipe body 10 is injection molded, so that the bending portion 12 is subjected to the greatest pressure. When the hole diameter of the near-bending hole 1102 near the bending portion 12 is smaller, the amount of glue wrapped around the bending portion 12 is less than that of other parts under the same volume, which improves the pressure resistance of the bending portion 12 and avoids damage to the bending portion 12.

[0024] Preferably, the pipe wall thickness of the pipe portion 11 near the bending portion 12 is greater than that of the pipe portion 11 away from the bending portion 12, and the wall thickness of the injection molded body 20 near the bending portion 12 is less than that of the injection molded body 20 away from the bending portion 12. That is, the pipe wall thickness of the pipe portion 11 gradually decreases from the part near the bending portion 12 to the part away from the bending portion 12, and the wall thickness of the injection molded body 20 gradually increases from the part near the bending portion 12 to the part away from the bending portion 12.

[0025] It can be understood that the wall thickness of the injection molded pipe joint is fixed, and the wall of the injection molded pipe joint is formed by the wall of the pipe body 10 and the wall of the injection molded body 20, so that when the wall thickness of the pipe body 10 increases, the thickness of the injection molded body 20 decreases. In this way, the wall thickness around the bending portion 12 is large, and the bending portion 12 can resist the scouring force of the glue during injection molding, so that the bending portion 12 is not easily damaged.

[0026] The skilled in the art should understand that the above description and the embodiments of the utility model shown in the drawings are only examples and do not limit the utility model. The advantages of the utility model have been fully and effectively realized. The function and structural principle of the utility model have been shown and described in the embodiments, and the embodiments of the utility model can be any deformation or modification without departing from the principle.

Claims

1. An injection-molded pipe joint, characterized in that, The injection-molded pipe fitting includes: A pipe body having at least two pipe sections and at least one bend, wherein one end of one pipe section is connected to the end of the other pipe section and the bend is formed at the connection portion, and a plurality of pipe wall holes are formed on the wall of each pipe section, the plurality of pipe wall holes being distributed in the portion of the pipe section away from the bend. The injection-molded body is wrapped around the outside of the pipe body and forms a pipe with a predetermined inner diameter.

2. The injection-molded pipe joint according to claim 1, characterized in that, Multiple near-bend holes are formed on the pipe wall near the bend in each pipe body. The diameter of the near-bend hole is not greater than the diameter of the hole in the pipe wall, and the diameter of the near-bend hole near the bend is smaller than the diameter of the near-bend hole away from the bend.

3. The injection-molded pipe joint according to claim 2, characterized in that, The plurality of pipe wall holes are evenly distributed in rows on the pipe wall of the pipe section away from the bend, and the distance between any pipe wall hole in each row and the bend is equal. The near bend holes are evenly distributed in rows on the pipe wall of the pipe section close to the bend, and the distance between any near bend hole in each row and the bend is equal.

4. The injection-molded pipe joint according to claim 3, characterized in that, The number of near-bend holes on each of the pipe sections is set to four rows.

5. The injection-molded pipe joint according to claim 1, characterized in that, The wall thickness of the pipe section near the bend is greater than the wall thickness away from the bend, and the wall thickness of the injection-molded body near the bend is less than the wall thickness away from the bend.

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