KR100851675B1 - A watertight connection structure for drainpipe coupling and that production method - Google Patents

Abstract

The present invention relates to a watertight connection structure for a sewer pipe connector and a manufacturing method thereof, and more particularly, to a primary molding product by injecting a raw material into a blow molding, and to supplying the primary molding product to a molding mold, the finished product having a desired shape as an open mold. The present invention relates to a watertight connection structure for a sewer pipe connector, and a method of manufacturing the same, which enables to form a phosphorous pipe connector so that the connection can be made to be robust and secure.

In the present invention, in the connection structure for connecting so that the watertight is maintained by the rubber ring by inserting the sewer pipe (30, 31) to both sides of the connector,

The primary molded product 60 is molded in the blow molding 50, and the molded product 70 is secondarily formed from the molding mold 70 to the open mold 71, but the reinforcement protrusions are formed in a semicircle in the horizontal and vertical directions ( 11) having a ring groove 13 into which the rubber ring 14 is inserted at both sides thereof, and is formed to have inclined grooves 12 protruding outwardly at both ends thereof.

Pipe connector, connector, sewer pipe

Description

A watertight connection structure for drainpipe coupling and that production method}

1 is a cross-sectional view of a blow molding of the present invention.

2 is a cross-sectional view of a state in which raw materials are supplied to a blow molding of the present invention.

3 is a cross-sectional view of a state of molding by injecting air into the blow molding of the present invention

4 is an enlarged cross-sectional view of the main part of FIG. 3 of the present invention;

5 is a cross-sectional view of the primary molded product of the present invention

6 is a cross-sectional view of a state in which the primary molded product of the present invention is inserted into a molding mold.

Figure 7 is a cross-sectional view of the assembled state of the molding die of the present invention

8 is a cross-sectional view of a state of assembling the open mold to the molding mold of the present invention.

Figure 9 is a cross-sectional view of the insertion state of the opening mold of the present invention

10 is a cross-sectional view of an operating state of the opening mold of the present invention.

Figure 11 is an enlarged cross-sectional view of the main portion of the connector completed by the opening mold of the present invention

Figure 12 is an exploded perspective view of the tube connector of the present invention

13 is a cross-sectional view of the tube connector of the present invention.

Figure 14 is an enlarged cross-sectional view of the main part of the pipe connector of the present invention

Figure 15 is an enlarged cross-sectional view of the main portion of the sewer pipe inserted into the pipe connector of the present invention.

[Description of Symbols for Main Parts of Drawing]

10: pipe connector 11: reinforcement protrusion

12: inclined groove 13: ring groove

14: rubber ring 15: teflon

16: fixing protrusion 17: sealing protrusion

18: uneven protrusions 40: finished product

50: boring molding 51: injection hole

52: raw material 60: primary molded product

70: molding mold 71: opening mold

The present invention relates to a watertight connection structure for a sewer pipe connector and a manufacturing method thereof, and more particularly, to a primary molding product by injecting a raw material into a blow molding, and to supplying the primary molding product to a molding mold, the finished product having a desired shape as an open mold. The present invention relates to a watertight connection structure for a sewer pipe connector, and a method of manufacturing the same, which enables to form a phosphorous pipe connector so that the connection can be made to be robust and secure.

In general, the sewer pipe is a double wall sewer pipe that is formed by spirally supplying a profile in which one hollow is formed, and a multi-walled sewer pipe that is formed by spirally supplying a profile in which a plurality of hollow and crisscross reinforcements are formed. Various sewer pipes are provided, such as laminated wall sewer pipes that are formed by molding, and sewage pipes that are formed by extrusion into a single structure or various shapes or double or triple structures, and these various sewer pipes are mainly buried underground to supply various liquids such as sewage and wastewater. We use to

Various pipe connectors have been proposed for connecting such sewer pipes, but since these pipe connectors are injection molded, they are molded in a very thick form to improve safety, so it is difficult to cool after injection, and it takes a lot of cooling time while cooling. Shrinkage occurred and there was a drawback that it was not possible to provide products of the correct dimensions depending on the outside temperature.

In recent years, a connection method for inserting a rubber ring into a connector and inserting a sewer pipe from both sides has been used.

However, this connection method is not only difficult to insert the sewage pipe, but the sewage pipe is difficult to maintain the watertight in many spaces after inserting because the outer diameter is not kept constant due to the characteristics of the raw material.

And since the connector is manufactured by injection molding, it can't provide the desired shape properly and the rubber ring can't be installed firmly, so even when fixing with adhesive, the installation position is changed when inserting the sewer pipe to prevent leakage. I could not.

The present invention has been made to solve the above-mentioned drawbacks, and to provide a connector that is maintained watertight only by the rubber ring after the insertion of the sewage pipe by molding the various shapes required by molding the tube connector by blow molding without injection molding. The purpose.

The present invention is not molded into the exact shape and shape when forming the pipe connector by the blow molding, so once molded by the blow molding after supplying the primary molded product to the molding die once more through the operation of forming the open mold of the desired shape Its purpose is to provide stable, robust and accurate pipe connections.

According to the accompanying drawings, preferred embodiments of the present invention made for this purpose will be described in detail.

The primary molded product 60 molded primarily by the blow molding 50 has a cylindrical shape and is symmetrical with respect to the center, and has a plurality of reinforcing protrusions protruding in a semicircle in the horizontal direction and the vertical direction. 11) was formed and molded to resist impact.

The primary molded product 60 forms a ring groove 13 for inserting the rubber ring 14 into the outer side of the reinforcing protrusion 11, but protrudes inclined toward the center from the outside to be inclined inwardly from the front end. And, the rubber ring 14 is inserted into each of the ring groove 13 independently.

The rubber ring 14 is assembled so that the outer side is coincided with the ring groove 13, the fixing projection 16 protrudes in one part as the inner diameter to surround the outer diameter of the sewage pipes (30, 31) and relatively inside the center direction. Teflon 15 made of a strong material is installed to firmly adhere to the installation position, the inside of the sealing projections 17 to protrude obliquely toward the center direction, so as to project more than the fixing projections (16).

On the outer side of the ring groove 13 is formed in the circumferential convex protrusions 18 to reinforce, and the inclined groove 12 is formed to be inclined toward the outer direction at both ends.

The blow molding 50 for molding the primary molded product 60 may be divided into two parts to open and combine, and an injection hole 51 may be formed on the upper side to be molded by the supply of the raw material 52. will be.

The primary molded product 60 constitutes a molding mold 70 so as to mold the pipe connector 10, and supplies the primary molded product 60 to the inside of the molding mold 70 to insert the opening mold 71. After opening the open mold 71 to re-molded the primary molded product 60 to be able to mold the pipe connector 10 which is the finished product (40).

The present invention having such a configuration is formed by a pair of molds and the open blow molding 50 is combined as shown in Figure 2 to supply the raw material 52, which is a molten resin to the injection port 51, the raw material 52 By supplying air in the interior of the primary molded product 60 will be able to be molded.

After the primary molded product 60 is supplied into the molding die 70, the finished product 40 molds the pipe connector 10 by using the opening mold 71.

The pipe connector 10 is formed by forming the reinforcement protrusion 11, the ring groove 13 and the inclined groove 12 at the same time, but can be molded firmly by a variety of reinforcement protrusions 11 and uneven protrusions (18). It is.

After the pipe connector 10 is integrally formed by blow molding, the rubber ring 14 having the Teflon 15 inserted therein is supplied to the ring groove 13.

When connecting the sewer pipes (30, 31), the sewer pipes (30, 31) are forcibly inserted at both sides of the pipe connector (10), respectively.

As the sewer pipes 30 and 31 are inserted, the fixing protrusions 16 and the sealing protrusions 17 of the rubber ring 14 are inclined in the direction in which the sewer pipes 30 and 31 enter, so as to the outer diameters of the sewer pipes 30 and 31. It is able to keep water tightly.

Since the rubber ring 14 is provided with a strong material Teflon 15 and the ring groove 13 is formed relatively deep, the rubber ring 14 can stably adhere to the installed position without moving even in the deep insertion of the sewer pipes 30 and 31. It is.

Since the sealing protrusion 17 protrudes higher than the fixing protrusion 16, the sealing protrusion 17 is in close contact with the outer diameters of the sewer pipes 30 and 31 to maintain the watertightness.

Thus, by forcibly pushing the sewage pipes 30 and 31 to both sides of the pipe connector 10, the connection of the sewage pipes 30 and 31 can be terminated.

Preferred embodiments of the manufacturing process of such a pipe connector 10 will be described in detail according to the accompanying drawings.

EXAMPLE

(1) Mold installation process

Molding the blow molding 50 is installed in a bisected state, by combining the bisected blow molding 50 to open only the inlet 51 and the rest to remain blocked.

(2) Supply process of raw materials

When a predetermined amount of the raw material 52, which is a molten resin, is supplied to the open inlet 51, and air is supplied from the outside through the inlet 51, the raw material 52 adheres to the inner wall of the blow molding 50, thereby forming a mold. Molding takes place as it is.

However, since the thickness of the primary molded product 60 to be formed due to the raw material 52 is so thick that the desired shape is not molded at one time, the molding is finished in a state that is not completely molded.

(3) Primary molded product separation process

After the primary molded product 60 is molded by the blow molding 50, the primary molded product 60 is separated after opening the blow molding 50 to both sides.

(4) Joining Process of Primary Molded Products

After separating the primary molded product, it is supplied to the molding die 70 to prepare for secondary molding, and the opening mold 71 is supplied.

(5) Finishing process

When the opening mold 71 is supplied to the inside of the molding mold 70, the primary molded product 60 is located at the outside thereof, so that when the molding mold 70 is spread outward, the molding is formed into the finished product 40. .

Here, the molding die 70 is provided with a spiral pipe to continuously supply externally heated water or oil so that the heating is performed so that the finished product 40 can be accurately molded to supply the pipe connector 10. will be.

In the present invention, after molding the primary molded product by blow molding without the pipe connector, the finished product is formed by using the open mold in the molding mold, and thus molding various shapes required to maintain watertightness only with the rubber ring after insertion of the sewer pipe. It is to provide a pipe connector.

The present invention is to provide a pipe connector that is molded and supplied in various shapes, so that even when molded in a thin shape, the strength is improved by the reinforcement projections, so that even when thin is not easily broken.

Claims (2)

In the connection structure to connect the sewer pipes (30, 31) to both sides of the connector so that the watertight is maintained by the rubber ring, The primary molded product 60 is formed in the blow molding 50, and the molded product 70 is secondarily formed from the molding mold 70 to the open mold 71, but a plurality of reinforcements are formed in a semicircle in the horizontal and vertical directions. Forming a projection 11 and forming a ring groove 13 is inserted into the rubber ring 14 on both sides of the reinforcement projection 11, the inclined groove 12 is inclined toward the outside toward both ends of the finished product 40 Watertight connection structure for sewer pipe connector, characterized in that the molding. In the manufacturing method of the connector for connecting so that the watertight is maintained by the rubber ring by inserting the sewer pipes (30, 31) to both sides of the connector, Forming the blow molding 50 and installing the bi-divided state, and combining the bisecting blow molding 50 to open only the injection hole 51 and the rest of the mold installation process; When a predetermined amount of the raw material 52, which is a molten resin, is supplied to the open inlet 51, and air is supplied from the outside through the inlet 51, the raw material 52 adheres to the inner wall of the blow molding 50, thereby forming a mold. Supply process of raw materials to be molded into a mold; After molding the primary molded product 60 by the blow molding 50, the process of separating the primary molded product 60 after opening the blow molding 50 to both sides; Separating the primary molded product 60 and supplying it to the molding mold 70 to prepare for secondary molding, and combining the primary molded product to supply the opening mold 71; When the opening mold 71 is supplied to the inside of the molding mold 70, the primary molded product 60 is located at the outside thereof, so that the molding mold 70 is spread outwards to a plurality of semicircular shapes in the horizontal and vertical directions. Finished product having a reinforcing protrusion 11 and a ring groove 13 is inserted into the rubber ring 14 is inserted into both sides of the reinforcing protrusion 11, the end product having an inclined groove 12 that is inclined toward the outside toward both ends Watertight connector manufacturing method for sewer pipe connector characterized in that the molding to 40.

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