CN214535054U

CN214535054U - PPR pipe fitting screw thread mold insert

Info

Publication number: CN214535054U
Application number: CN202120700372.0U
Authority: CN
Inventors: 陈鹏; 陈思翰
Original assignee: Cixi Zhenpeng Pipe Parts Co ltd
Current assignee: Ningbo Zhenpeng Plumbing Fittings Co ltd
Priority date: 2021-04-07
Filing date: 2021-04-07
Publication date: 2021-10-29
Anticipated expiration: 2031-04-07

Abstract

The utility model discloses a PPR pipe fitting screw thread mold insert, mould the piece including screwed pipe, stand pipe and package, the screwed pipe is pegged graft in the stand pipe and with stand pipe interference fit, the cladding of moulding the piece cladding is in the outside of screwed pipe and stand pipe. The utility model provides a PPR pipe fitting thread insert, which realizes the tight connection of a threaded pipe and a guide pipe through the interference fit of the threaded pipe and the guide pipe; the plastic part is coated outside the connected threaded pipe and the guide pipe, so that the connection between the threaded pipe and the guide pipe is more stable, the plastic part is utilized to prevent the threaded pipe and the guide pipe from relative displacement, the connection quality is ensured, and the leakage is avoided.

Description

PPR pipe fitting screw thread mold insert

Technical Field

The utility model relates to a pipe fitting technical field especially relates to a PPR pipe fitting screw thread mold insert.

Background

The most popular pipeline systems in the market in China are PPR pipelines and PPR pipe fittings. Many of the PPR pipe fittings are of a structure with internal and external threads. In the prior art, most of the internal threads and the external threads are made of metal materials such as brass or stainless steel.

However, the cost of the insert is fluctuated by raw materials in the existing structure, and the cost is high. And the metal material contains lead and heavy metal ions, which seriously affects the sanitation of drinking water.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a PPR pipe fitting screw thread mold insert to solve the problem that above-mentioned prior art exists.

In order to achieve the above object, the utility model provides a following scheme: the utility model provides a PPR pipe fitting screw thread mold insert, mould the piece including screwed pipe, stand pipe and package, the screwed pipe is pegged graft in the stand pipe and with stand pipe interference fit, the cladding of moulding the piece cladding is in the outside of screwed pipe and stand pipe.

Preferably, the threaded pipe comprises a threaded section and an insertion section, the insertion section is located above the threaded section, the diameter of the insertion section is smaller than that of the threaded section, and threads are formed in the threaded section of the threaded pipe.

Preferably, a plurality of bosses are fixed on the outer wall of the threaded section of the threaded pipe in the circumferential direction, and the bottom end of the guide pipe is in contact connection with the bosses.

Preferably, the bosses are of arc structures, and the number of the bosses is not less than three.

Preferably, the top ends of the thread section and the insertion section are provided with chamfers.

Preferably, the outer wall of the bottom of the guide pipe is sleeved and fixed with a gear ring, the guide pipe and the gear ring are integrally formed, and a plurality of teeth are fixed on the outer side wall of the gear ring in the circumferential direction.

Preferably, the plastic-coated part is coated outside the boss and the gear ring, and the plastic-coated part bottom end is flush with the bottom end of the threaded pipe.

Preferably, a plurality of connecting rods are fixedly connected to the tops of the bosses, a plurality of connecting holes are formed in the bottom of the gear ring, the connecting rods correspond to the connecting holes, and the connecting rods are fixedly inserted into the connecting holes.

Preferably, the connecting rod is provided with anti-skid grains.

Preferably, the screwed pipe is the mold insert of PPSU material, the pipe fitting that the spare is PPR material is moulded with the package to the stand pipe.

The utility model discloses a following technological effect: the utility model provides a PPR pipe fitting thread insert, which realizes the tight connection of a threaded pipe and a guide pipe through the interference fit of the threaded pipe and the guide pipe; the plastic part is coated outside the connected threaded pipe and the guide pipe, so that the connection between the threaded pipe and the guide pipe is more stable, the plastic part is utilized to prevent the threaded pipe and the guide pipe from relative displacement, the connection quality is ensured, and the leakage is avoided.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a front view of a threaded pipe;

FIG. 3 is a bottom view of a threaded pipe;

FIG. 4 is a bottom view of the guide tube;

wherein, the threaded pipe-1; thread section-1.1; splicing section-1.2; 1.3 of a boss; connecting rod-1.4; a guide tube-2; ring gear-2.1; 2.2 of teeth; connecting hole-2.3; and (4) plastic coating parts-3.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the accompanying drawings and the detailed description.

The utility model provides a PPR pipe fitting screw thread mold insert, mould 3 including screwed pipe 1, stand pipe 2 and package, screwed pipe 1 is pegged graft in the stand pipe 2 and with 2 interference fit of stand pipe, the package is moulded 3 cladding and is in the outside of screwed pipe 1 and stand pipe 2.

Further, the threaded pipe 1 comprises a threaded section 1.1 and an insertion section 1.2, the insertion section 1.2 is located above the threaded section 1.1, the diameter of the insertion section 1.2 is smaller than that of the threaded section 1.1, an internal thread or an external thread is arranged on the threaded section 1.1 of the threaded pipe 1, and the guide pipe 2 is matched with the threaded pipe 1.

Furthermore, in order to improve the effect of connecting the plastic-coated part 3 with the threaded pipe 1 and the guide pipe 2, six bosses 1.3 are fixed on the outer wall of the threaded section 1.1 of the threaded pipe 1 in the circumferential direction, a gear ring 2.1 is fixedly sleeved on the outer wall of the bottom of the guide pipe 2, the bottom of the gear ring 2.1 is in contact connection with the tops of the bosses 1.3, a plurality of teeth 2.2 are fixed on the outer side wall of the gear ring 2.1 in the circumferential direction, and the guide pipe 2 and the gear ring 2.1 are integrally formed; the boss 1.3 is arranged at a position 5mm away from the bottom plane of the threaded pipe 1, and the bottom end of the guide pipe 2 is in contact connection with the boss 1.3; the boss 1.3 is an arc structure with the length of 6mm, the width of 5mm and the height of 2.5 mm.

Further, for making screwed pipe 1 peg graft in the stand pipe 2 more easily, and realize connecting more firmly, all be provided with the chamfer on screwed pipe section 1.1 and grafting section 1.2 top, the position internal diameter that stand pipe 2 is connected with 1.2 grafting section of screwed pipe 1 is 1.42mm less than the external diameter of 1.2 grafting section of screwed pipe 1, the position internal diameter that stand pipe 2 is connected with 1.1 screwed pipe section of screwed pipe 1 is 0.95mm less than the external diameter of 1.1 screwed pipe 1, the cladding of plastic-coated piece 3 is in the outside of boss 1.3 and ring gear 2.1, plastic-coated piece 3 bottom with 1 bottom of screwed pipe flushes.

Further, for realizing that screwed pipe 1 and stand pipe 2 are connected more tightly, prevent relative displacement, at a plurality of connecting rod 1.4 of boss 1.3 top fixedly connected with, a plurality of connecting hole 2.3 has been seted up to ring gear 2.1 bottom, connecting rod 1.4 with connecting hole 2.3 corresponds the setting, connecting rod 1.4 is pegged graft and is fixed in connecting hole 2.3, has seted up anti-skidding line on connecting rod 1.4.

The PPR pipe fitting threaded insert provided by the invention realizes tight connection of the threaded pipe 1 and the guide pipe 2 through interference fit of the threaded pipe 1 and the guide pipe 2; through covering the plastic-coated piece 3 outside the connected threaded pipe 1 and the guide pipe 2, the connection between the threaded pipe 1 and the guide pipe 2 is more stable, the plastic-coated piece 3 can prevent the threaded pipe 1 and the guide pipe 2 from relative displacement, the connection quality is ensured, and the leakage is avoided.

Further, screwed pipe 1 is the mold insert of PPSU material, the pipe fitting that piece 3 is the PPR material is moulded to stand 2 and package.

The utility model provides a PPR pipe fitting screw thread mold insert's production step does:

the first step is as follows: a separate threaded pipe 1 and guide pipe 2 are manufactured, respectively.

And secondly, assembling the threaded pipe 1 and the guide pipe 2 in the mold or by using a special tool outside the mold, and putting the assembled components into the plastic-coated mold.

The third step: and (3) coating the threaded pipe 1 and the guide pipe 2 by using a plastic coating piece to prepare a qualified product.

The utility model provides a PPR pipe fitting screw thread mold insert adopts high strength, polymer plastics, has improved product performance, replaces the metal material that has used all the time originally, has reduced product manufacturing cost, and the wholeness can be superior to former product, not only protects the environment but also makes the industry upgrade; the PPSU material has excellent corrosion resistance, and can avoid the condition that the metal insert is easy to form micropores on a joint, so that the metal insert cannot be used; the one-time advanced injection molding process is adopted, the original multi-channel machining process of the product is changed, the efficiency is improved, and the energy is saved and the emission is reduced; the structural design accords with humanized design concept.

The utility model discloses main technical index of PPSU mold insert:

1. maximum use temperature: 192 deg.C

2. Minimum use temperature: 100 deg.C

3. Deformation temperature: 197 deg.C

4. Lead-containing: 0

5. Tensile strength: 77

6. Flexural strength: 108

7.5000 hours 95 ℃ 10MPa leak test

8. The material has NSF non-toxic certification and is approved by drinking water.

In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description of the present invention, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

The above-mentioned embodiments are only intended to describe the preferred embodiments of the present invention, but not to limit the scope of the present invention, and those skilled in the art should also be able to make various modifications and improvements to the technical solution of the present invention without departing from the spirit of the present invention, and all such modifications and improvements are intended to fall within the scope of the present invention as defined in the appended claims.

Claims

1. The utility model provides a PPR pipe fitting screw thread mold insert which characterized in that moulds piece (3) including screwed pipe (1), stand pipe (2) and package, screwed pipe (1) peg graft in stand pipe (2) and with stand pipe (2) interference fit, the cladding of package mould piece (3) is in the outside of screwed pipe (1) and stand pipe (2).

2. The PPR tubular threaded insert of claim 1, wherein: the threaded pipe (1) comprises a threaded section (1.1) and an insertion section (1.2), the insertion section (1.2) is located above the threaded section (1.1), the diameter of the insertion section (1.2) is smaller than that of the threaded section (1.1), and threads are formed in the threaded section (1.1) of the threaded pipe (1).

3. The PPR tubular threaded insert of claim 2, wherein: a plurality of bosses (1.3) are fixed on the outer wall of the thread section (1.1) of the threaded pipe (1) in the circumferential direction, and the bottom end of the guide pipe (2) is in contact connection with the bosses (1.3).

4. The PPR tubular threaded insert of claim 3, wherein: the boss (1.3) is of an arc structure, and the number of the bosses (1.3) is not less than three.

5. The PPR tubular threaded insert of claim 2, wherein: and chamfers are arranged at the top ends of the thread section (1.1) and the insertion section (1.2).

6. The PPR tubular threaded insert of claim 3, wherein: the utility model discloses a gear ring (2.2) is fixed with to the cover is established on stand pipe (2) bottom outer wall, stand pipe (2) and gear ring (2.1) integrated into one piece, a plurality of teeth (2.2) are all inherent in circumference on the lateral wall of gear ring (2.1).

7. The PPR tubular threaded insert of claim 6, wherein: the plastic coated piece (3) is coated outside the boss (1.3) and the gear ring (2.1), and the bottom end of the plastic coated piece (3) is flush with the bottom end of the threaded pipe (1).

8. The PPR tubular threaded insert of claim 6, wherein: boss (1.3) top fixedly connected with a plurality of connecting rod (1.4), a plurality of connecting hole (2.3) have been seted up to ring gear (2.1) bottom, connecting rod (1.4) with connecting hole (2.3) correspond the setting, connecting rod (1.4) are pegged graft and are fixed in connecting hole (2.3).

9. The PPR tubular threaded insert of claim 8, wherein: the connecting rod (1.4) is provided with anti-skid grains.

10. The PPR tubular threaded insert of claim 1, wherein: screwed pipe (1) is the mold insert of PPSU material, pipe fitting that piece (3) are the PPR material is moulded to stand (2) and package.