KR100665647B1 - Apparatus and Method for Manufacturing Sewage Pipe - Google Patents

Abstract

The present invention relates to a sewage pipe manufacturing apparatus and a method of manufacturing the same. More specifically, the present invention relates to a sewage pipe manufacturing apparatus and a method for manufacturing the sewage pipe for improving the strength of the pipe and producing a high quality sewage pipe with fewer defects.

To this end, the present invention is melted through the heater while maintaining a constant tension on the adhesive resin and the adhesive resin injection device and the adhesive resin injection device installed to inject the adhesive resin between the gap between the profile wound on the drum A long fiber supply device for supplying the long fiber tape, and an auxiliary extrusion device for evenly applying the fusion resin on the profile and the long fiber tape, and the fusion resin and the long fiber tape, and the adhesive resin and the profile to be firmly attached. Compression means for applying an external force.

Description

Apparatus and Method for Manufacturing Sewage Pipe

1 is a view showing a system for manufacturing a conventional sewage pipe, (a) is a plan view of the sewage pipe manufacturing apparatus, (b) is a side view of the sewage pipe manufacturing apparatus.

2 is a perspective view briefly showing the sewage pipe manufacturing apparatus according to the present invention.

Figure 3 is a side view briefly showing a sewage pipe manufacturing apparatus according to the present invention.

4 is a view showing another embodiment of the sewage pipe manufacturing apparatus according to the present invention.

5 is a view showing another embodiment of the mixed extrusion apparatus constituting the sewage pipe manufacturing apparatus according to the present invention.

6 is a view briefly showing a manufacturing process of the sewage pipe according to the present invention.

 [Explanation of symbols on the main parts of the drawings]

1: sewage pipe manufacturing apparatus 100: adhesive resin injection device

101: adhesive resin 110: long fiber supply device

111: long fiber tape 112: long fiber conveying unit

113: heater 114: guide roller

115: long fiber tape release device 130: auxiliary extrusion device

131: fusion resin 140: pressing means

141: pressing roller P: profile

The present invention relates to a sewage pipe manufacturing apparatus and a method of manufacturing the same. More specifically, the present invention relates to a sewage pipe manufacturing apparatus and a method for manufacturing the sewage pipe for structurally improving the strength of the pipe and producing a high quality sewage pipe with few defects.

In general, sewage pipes made of synthetic resins are given adequate strength to prevent deformation and breakage. Background Art Conventionally, attention has been drawn to the manufacture of light and strong tubes, and in this respect, the design of new structural materials has also been parallel. Factors affecting the strength of the tube include the structure of the tube, the structural material forming the tube, and defects that occur when plastically deforming the structural material in the manufacturing process, or the original thermal properties of the structural material. Influencing variables appear in the structure of the tube, the selected structural material, and the process and equipment of the tube. They are all predictable, but it is difficult to reflect all of these matters in the design and manufacture of the pipes, and the material of the pipe should be selected and manufactured so that the mechanical strength is maintained when using the manufacturing process or the structural design suitable for the designated structural material. do. In terms of strength, the structure of the pipes also plays an important part, but basically the design of a suitable manufacturing process takes up a greater proportion. As such, the range in which the required pipe strength can be obtained through the structural design of the pipe is very limited. Accordingly, the sewage pipe manufacturing technology that induces the maximum rigidity of the structural material in consideration of the thermal properties of the structural material is provided. The impact on the strength of the pipe is greater. The known pipe manufacturing technology using synthetic resin as a structural material is a technique for manufacturing a tube through a process such as extrusion, molding, cooling, drawing, cutting, etc., in order to obtain high strength while using less material. The method of creating an appropriate atmosphere for stable plastic deformation is applied. The cross-sectional shape of the pipe produced by this method is a solid layer, and is generally used as a water pipe, a jacket pipe, a conduit, or another rigid pipe.

In the manufacture of sewage pipes made of synthetic resin materials, pipe sections are designed to satisfy certain conditions such as reducing the amount of material used, while maintaining the stiffness to withstand earth pressure and lubrication pressure when buried underground, and reducing the weight. One way is to create a void in the cross section of the pipe and reduce the amount and weight of the material by the void. However, the sewage pipes produced in this way have a problem that the voids remain in the cross section, which reduces the strength of the pipes.

Therefore, in the pipe section design of sewage pipes, attention has been focused on how to maintain the sufficient strength to withstand earth pressure and rotation pressure while reducing the amount of material. Examples thereof include a method for manufacturing large diameter plastic pipes disclosed in Japanese Patent Laid-Open No. 3-205137, and a method and apparatus for manufacturing double wall sewer pipes in Korean Patent No. 026184. All of them are hollowed out, and a small pipe of a certain shape having a hole or a square groove is first extruded, and then wound on a drum to make a sewage pipe having a smooth inside and outside. Here, the shape of the hole of the small pipe is determined by the extrusion die, it is also possible to manufacture a hollow hole of various forms.

However, in the former case, since the small resin tube molded through the guide and the liquid resin extruded from the resin injection nozzle are bonded in a gel state during the bonding process, the bonding failure occurs or the hardness of the beam decreases after hardening. Weakening phenomenon appeared. In other words, the small pipe coming out of the guide is immediately wound on the drum. In this process, the resin is injected into the space between the small pipes, and the small pipes are pressed together by pressing rollers. Therefore, the shape of the small pipes is not completely solidified. In the process of forming a small tube by combining the high temperature of the liquid resin for joining in a state that is not in the state, there is a problem in that the original structure or structure is changed by high temperature, weakening the strength of the bond.

In the latter case, the problem of the former can be remarkably reduced by supplying the profile to the drum in a solid state to reduce deformation and increasing the strength of the tube by using a bonding resin injected between the profiles. Toughness, that is, because the adhesive portion is very vulnerable to pressure, load and impact applied from the outside, there was a problem that it can not easily bear the load such as ground after embedding.

Therefore, in order to improve the above problems, the present inventors have come to develop a sewage pipe having increased rigidity and external force between the bonded profile and the profile.

An object of the present invention is to insert the adhesive resin between the profile of the hollow form having a continuous form or the hollow portion of the hollow portion and the profile, the long-fiber tape and the fusion resin is applied thereon, and then pressed by using a pressing roller, the toughness It is to provide a high quality sewer pipe with increased rigidity.

Another object of the present invention by applying a long-fiber tape between the profile gap junction surface in the step of manufacturing the sewage pipe and then applying a fusion resin on the upper surface to reduce the defects, such as the separation of the profile between the internal hydrostatic pressure and tension and This is to ensure that the mechanical strength of the pipe deformation factor such as the torsional load can always be achieved.

The above and other objects of the present invention can be achieved by the present invention described below.

The present invention, the sewage pipe manufacturing apparatus is an extrusion apparatus, a profile molding apparatus for making a molten resin from the extrusion apparatus into a hollow (including a solid form with a hollow portion) and cooling and forming the profile, the profile having a constant gap A drum wound up to

An adhesive resin injection device installed to inject adhesive resin between the gaps of the profile wound on the drum;

A long fiber supply device for supplying a molten long fiber tape through a heater on the adhesive resin and the profile from the adhesive resin injection device;

An auxiliary extrusion device for evenly applying a fusion resin on the long fiber tape;

The fusion resin and the long fiber tape, and the adhesive resin and the profile is characterized by consisting of the pressing means for applying an external force to be firmly attached.

The long fiber supply device is characterized in that consisting of a long fiber feed unit having a heater therein, a long fiber tape loosening device and a guide roller to be supplied to the long fiber feed unit while maintaining a constant tension.

The present invention, the sewage pipe manufacturing apparatus is an extrusion apparatus, a profile molding apparatus for making a molten resin from the extrusion apparatus into a hollow (including a solid form with a hollow portion) and cooling and forming the profile, the profile having a constant gap A drum wound up to

An adhesive resin injection device installed to inject adhesive resin between the gaps of the profile wound on the drum;

A mixed extrusion device for evenly applying the long-fiber tape and the fused resin on the adhesive resin and the profile from the adhesive resin injector;

A long fiber tape decoupling device and a guide roller for supplying the long fiber tape to a mixed extrusion device while maintaining a constant tension;

It characterized in that it consists of a pressing means for applying an external force to be firmly attached to the long fiber tape and the fusion resin drawn from the mixed extrusion apparatus.

The sewage pipe manufacturing method according to the present invention,

An extrusion process for melting the synthetic resin material;

A cooling molding process for making the extruded molten resin into a hollow profile (including a hollow solid form) and cooling the melted profile;

A winding process of winding the cooled molded profile in a spiral shape at a predetermined interval on a drum;

An adhesive resin injection step of injecting adhesive resin between the gaps of the profile wound on the drum;

Winding a long fiber tape while maintaining a constant tension on the adhesive resin and the profile;

A fusion resin coating step of applying the fusion resin evenly on the long fiber tape;

The fusion resin and the long fiber tape and a compression process for applying an external force so that the profile and the adhesive resin is firmly attached.

Hereinafter, with reference to the accompanying drawings the contents of the present invention will be described in detail below.

Figure 2 is a perspective view briefly showing a sewage pipe manufacturing apparatus according to the present invention, Figure 3 is a side view briefly showing a sewage pipe manufacturing apparatus according to the present invention.

The sewage pipe manufacturing apparatus of this invention uses a conventional sewage pipe manufacturing apparatus, as shown to Fig.1 (a) or (b). That is, the extrusion apparatus 10, the profile forming apparatus 20 for cooling the molten resin coming out through the extrusion apparatus into a hollow (including the solid form filled with hollow), and cooling it, so that the profile has a certain gap The part of the drum 30 wound up is used as it is. The present invention is an adhesive resin injection device is installed to inject the adhesive resin 101 between the gap of the profile wound on the drum 30, as shown in Figure 2 or 3 in the conventional sewage pipe manufacturing apparatus as described above And a long fiber supply device 110 for supplying the molten long fiber tape 111 through the heater 113 on the adhesive resin and the profile from the adhesive resin injection device, and the long fiber tape. An auxiliary extrusion device 130 for evenly applying the fusion resin 131 on the 111, and the pressing means 140 for applying an external force so that the fusion resin and the long fiber tape, the adhesive resin and the profile is firmly attached It consists of. The long fiber supply device 110 is a long fiber tape solver for supplying the long fiber conveying unit 112 having a heater 113 therein, the long fiber tape is supplied to the long fiber conveying unit 112 while maintaining a constant tension And a guide roller 114.

At this time, the arrangement of the profile molding apparatus 20 and the adhesive resin injection apparatus 100 is shown in Figure 1 (a), the profile molding apparatus 20 is disposed in the lateral direction around the drum (30) As a result, the profile P has a horizontal advancing direction in the supply path, and the adhesive resin injection device 100 is disposed in the vertical direction on the upper side.

In more detail, the configuration and operation of the sewage pipe manufacturing apparatus 1, the melted resin in the extrusion device 10 has a shape of a profile while passing through a die (not shown), the initial structure of the profile The state before firing is completed, and the arrangement of tissues is not constant. This state is the state before solidification where deformation easily occurs. If the profile is solidified through the process of forming in a vacuum and cooling again, it is changed into the desired solidified profile (P) form, and the profile is given elasticity to have an appropriate strength.

After cooling the profile (P) as a tube (or rod) of a complete form through the cooling process, and then wound on the drum 30, and rotating the drum, the profile (P) as the drum rotates to the drum 30 As a result, they are wound at regular intervals in the spiral direction. At this time, the supply path of the profile P represents the horizontal direction which is lateral to the drum 30.

As shown in FIG. 3, the adhesive resin 101 is injected between the profile and the profile wound at a predetermined interval on the drum 30 as described above to form a profile wound one by one integrally, and the sheet is mounted thereon. Winding the long fiber tape 111 coming out through the fiber supply device (110).

The long fiber tape 111 is used as a reinforcing material, such as glass fiber, arimid fiber or polyester fiber, nylon fiber. Preferably, a long fiber tape prepared by impregnating the reinforcing material in the same material as the sewer pipe is used.

As described above, after the long fiber tape 111 is wound on the profile and the adhesive resin 101, the fusion resin 131 is applied, and compressed using a compression roller 141 to produce a sewage pipe.

4 is a view showing another embodiment of the sewage pipe manufacturing apparatus according to the present invention, in this embodiment, the adhesive is installed to inject the adhesive resin 101 between the gap of the profile (P) wound on the drum (30) Mixed extrusion apparatus 150 for evenly applying the long fiber tape 111 and the fusion resin 131 on the resin injection device 100, the adhesive resin 101 and the profile P from the adhesive resin injection device And a long fiber tape releasing device 115 and a guide roller 114 for supplying the long fiber tape to the mixed extrusion device 150 while maintaining a constant tension, and the long fiber drawn out from the mixed extrusion device 150. The tape 111 and the fusion resin 131 are composed of pressing means 130 for applying an external force to be firmly attached to the profile and the adhesive resin.

In the present embodiment, the mixed extrusion device 150 is composed of the long fiber supply device 110 and the auxiliary extrusion device 130 in the embodiment described in FIG. 3, and specifically, a partition is installed therein. The fusion resin 131 is discharged into the first space and the long fiber tape 111 is discharged into the second space, and the long fiber tape 111 and the fusion resin 131 are discharged together during the final discharge.

In this case, when the long fiber tape 111 passes through the mixing extrusion device 150, a separate heater device is required because the heater device used for melting the fusion resin and the heat of the fusion resin in the molten state are used. Therefore, the device can be simplified. That is, the long fiber tape 111 is a resin impregnated in the latent fiber, but the molten fiber tape does not need a heater because the molten fiber needs to be kept in a molten state.

5 is a view showing another embodiment of the mixed extrusion apparatus 150 according to the present invention, wherein partitions 152 and 153 are formed in one main body, and spaces are formed by the partitions. The fusion resin 131 through the first space, the long fiber tape 111 through the second space, the fusion resin 131 is discharged through the third space.

Method for producing a sewer pipe using the sewer pipe manufacturing apparatus having the configuration as described above is as follows.

The molten synthetic resin in the extruder 10 has the shape of a hollow (including solid form with a hollow hole) profile through the die, the initial structure of the profile being before the completion of firing, the arrangement of the tissue is constant It is not. This state is the state before solidification where deformation easily occurs. When the profile is solidified through a process of forming in a vacuum and cooling again, the profile is changed into a solidified profile (P), and the profile is given elasticity to have an appropriate strength.

Here, the profile forming apparatus 20 forms and cools the profile P formed from an extrusion die (not shown) in a vacuum state, and maintains a constant degree of cooling by changing the cooling method according to the size and production speed of the profile. That is, the profile forming apparatus is composed of a chamber such as a vacuum tank, the inside of which has a stepped cooling section in a vacuum atmosphere to cool the profile, and this cooling section is changed by changing the extrusion amount (the production speed of the profile). It is possible to create a solidified profile of (S2).

The profile (P) as described above is made into a tube (or rod) of a complete form through a cooling process, and then wound on the drum (30). When the drum is rotated, the profile (P) moves the drum (30) as the drum rotates. It is wound at regular intervals in the spiral direction (S3).

As described above, the adhesive resin 101 is injected between the gaps of the profile P wound on the drum 30 (S4).

Winding the molten long-fiber tape 111 through the heater on the adhesive resin 101 and the profile (P) (S5).

The fusion resin 131 is evenly coated on the profile P and the long fiber tape 111 wound as described above (S6).

By pressing in the axial direction using the compression roller 141 in the applied state as described above, it has a fusion resin and a long fiber tape and an adhesive layer to which the profile and the adhesive resin are firmly attached (S7).

The present invention is to put the adhesive resin between the profile and the profile having a continuity, by applying a long-fiber tape and fusion resin on the compression roller using a compression roller, thereby reducing the defects such as the separation of the profile between the internal hydrostatic pressure and tension In addition, it is possible to obtain a sewer pipe having improved mechanical strength against deformation factors of the pipe such as torsional load.

Simple modifications and variations of the present invention can be readily used by those skilled in the art, and all such variations or modifications can be considered to be included within the scope of the present invention.

Claims (6)

An extrusion apparatus, a profile molding apparatus for profile the molten resin from the extrusion apparatus, a drum for winding the profile to have a predetermined gap, an apparatus for joining the profile wound on the drum, and a profile wound on the drum An adhesive resin injection device installed to inject adhesive resin between the gaps between the adhesive resin injection device and a long fiber supply device for supplying a molten long fiber tape through a heater on the profile and the adhesive resin from the adhesive resin injection device; In the sewage pipe manufacturing apparatus comprising an auxiliary extrusion device for evenly applying the fusion resin on the long fiber tape, and a pressing means for applying an external force to firmly adhere the fusion resin and the long fiber tape and the profile and the adhesive resin , The long fiber supply device is a sewage pipe manufacturing apparatus comprising a long fiber tape unwinding device and a guide roller for supplying a long fiber conveying unit having a heater therein, the long fiber tape is supplied to the long fiber conveying unit while maintaining a constant tension. An extrusion apparatus, a profile molding apparatus for profile the molten resin from the extrusion apparatus, a drum for winding the profile to have a predetermined gap, an apparatus for joining the profile wound on the drum, and a profile wound on the drum An adhesive resin injection device installed to inject adhesive resin between the gaps of the adhesive resin, a mixed extrusion device for evenly applying the long-fiber tape and the fused resin on the adhesive resin and the profile from the adhesive resin injection device, and the mixed extrusion In the sewage pipe manufacturing apparatus comprising a crimping means for applying an external force so that the long-fiber tape and the fusion resin withdrawn from the device can be firmly attached to the profile and the adhesive resin, The mixing extrusion device is sewage pipe manufacturing apparatus, characterized in that partitioned by a partition installed inside the fusion resin through the first space, the long fiber tape through the second space, respectively. An extrusion apparatus, a profile molding apparatus for profile the molten resin from the extrusion apparatus, a drum for winding the profile to have a predetermined gap, an apparatus for joining the profile wound on the drum, and a profile wound on the drum An adhesive resin injection device installed to inject adhesive resin between the gaps of the adhesive resin, a mixed extrusion device for evenly applying the long-fiber tape and the fused resin on the adhesive resin and the profile from the adhesive resin injection device, and the mixed extrusion In the sewage pipe manufacturing apparatus comprising a crimping means for applying an external force so that the long-fiber tape and the fusion resin withdrawn from the device can be firmly attached to the profile and the adhesive resin, The mixed extrusion device is partitioned by two partitions installed therein, and discharging the fusion resin through the first space, the long fiber tape through the second space, and the fusion resin through the third space, respectively. Sewage pipe manufacturing equipment. delete delete delete

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