KR102412991B1 - Manufacturing method for large toriconical end plate - Google Patents

Abstract

The present invention relates to a method for manufacturing a special large-sized conical pipe joint used in the plant field, etc., wherein the conical pipe joint is divided along the periphery of the conical pipe joint in consideration of the dimensions of a plurality of sections A divided design step of dividing the design into; a material manufacturing step of designing a shape of a material for manufacturing each section in a developed view, and manufacturing a flat material according to the development; a mold manufacturing step of designing and manufacturing a mold for manufacturing each section by molding the material; a material heating step of heating the material; a section manufacturing step of manufacturing each section by molding the heated material into the mold; and a section assembly step of assembling each of the manufactured sections to produce a conical pipe joint. Discloses a method for manufacturing a conical pipe joint comprising.

Description

Manufacturing method of a conical pipe joint {Manufacturing method for large toriconical end plate}

The present invention relates to a method for manufacturing a conical pipe joint used to connect two pipes of different diameters, and more particularly, to a method for manufacturing a special large conical pipe joint used in the plant field.

As a technology related to a pipe joint for connecting two pipes of different diameters, the Republic of Korea Patent Publication No. 10-2211705 (registered on Jan. 28, 2021) 'Single pipe connecting pipes of different diameters' (hereinafter referred to as 'prior art') ) is presented.

In the prior art, "a first pipe part into which the first main pipe is fitted; and a second main pipe having a diameter smaller than that of the first pipe part while communicating with the first pipe part and the inner periphery, and having a smaller diameter than the first main pipe part, is fitted and fastened. It is a technology related to the pyeonsu pipe, characterized in that it includes a second pipe part.

The prior art provides a pipe joint that can be efficiently used when connecting two pipes of different diameters, minimizes fluid flow resistance and has excellent structural soundness of the joint, but is used in large-scale It is difficult to apply to pipe joints.

On the other hand, conventionally, a large-sized pipe joint used in the plant field has been manufactured by processing an iron plate in a hot forming (hot forming) method using a mold, but the large-sized pipe joint has a special structure and is produced in small quantities In this case, there is a problem in that it takes a lot of money and time to provide a large mold corresponding to the size of the pipe joint.

Therefore, in the conical pipe joint used to connect two pipes of different diameters, a special large-sized conical pipe joint can be manufactured more easily, but a separate technology is required to reduce the cost and time required for manufacturing to become

[Document 1] Republic of Korea Patent Publication No. 10-2211705 (Registered on Jan. 28, 2021)

The present invention has been devised to solve the above problems, and it is an object of the present invention to provide a method for manufacturing a conical pipe joint that allows a special conical pipe joint to be produced in a small amount to be manufactured quickly and inexpensively.

The problems to be solved by the present invention are not limited to the aforementioned problems. Other technical problems not mentioned will be clearly understood by those of ordinary skill in the art to which the present invention belongs from the following description.

In order to solve the above problems, the method for manufacturing a conical pipe joint according to an embodiment of the present invention is designed to divide the conical pipe joint into a plurality of sections divided along the perimeter thereof in consideration of the dimensions of the conical pipe joint to be manufactured. divided design stage; a material production step of designing a shape of a material for manufacturing each section in a developed view, and manufacturing a flat material according to the development; a mold manufacturing step of designing and manufacturing a mold for manufacturing each section by molding the material; a material heating step of heating the material; a section manufacturing step of manufacturing each section by molding the heated material into the mold; and a section assembly step of assembling each of the manufactured sections to produce a conical pipe joint.

In an embodiment of the present invention, the mold includes a lower mold installed on the bottom of the press; and an upper mold installed on the upper side of the lower mold so as to be movable in a lifting operation by a press, and forming the material into the section together with the lower mold by pressing the material placed on the lower mold during the lowering operation. Silver, a lower molding plate having a lower molding surface having a shape corresponding to the outer surface of each section on the upper surface; and a seating surface having a shape corresponding to the cross-sectional shape of the lower molding plate is formed on each upper surface to support the lower molding plate on the lower side of the lower molding plate, and spaced apart from each other along the width direction of the lower molding plate A plurality of lower support plates are arranged to be; and the upper mold includes: an upper molding plate having an upper molding surface having a shape corresponding to the inner surface of each section on a lower surface thereof; and a support surface having a shape corresponding to the cross-sectional shape of the upper molding plate is formed on each lower surface of the upper molding plate to support the upper molding plate on the upper side of the upper molding plate, and spaced apart from each other along the width direction of the upper molding plate A plurality of upper support plates arranged to be;

In an embodiment of the present invention, the lower molding plate comprises a fixed plate fixed to the lower support plate, and a lifting plate mounted on the lower support plate to enable vertical flow, and the lower mold includes the lifting plate and It is connected and made to further include a lift driving unit for lifting the section placed on the lower molding plate by raising the lifting plate.

In an embodiment of the present invention, the lifting plate is formed to extend along the width direction of the lower forming plate, two are provided and are arranged to be spaced apart from each other in the longitudinal direction of the lower forming plate.

According to the manufacturing method of the conical pipe joint according to the embodiment of the present invention, the conical pipe joint has a structure divided into a plurality of sections, and each section is made of the same or similar size and shape, so that each Since sections can be made, the size and type of mold can be reduced, and therefore, special conical pipe joints produced in small quantities can be manufactured quickly and inexpensively.

In addition, according to the manufacturing method of the conical pipe joint according to the embodiment of the present invention, the lower molding plate and the lower support plate forming the lower mold, and the upper molding plate and the upper support plate forming the upper mold can be manufactured by processing a metal plate. There is an effect that a mold for the production of the section can be provided more quickly and inexpensively.

1 is a flowchart of a method for manufacturing a conical pipe joint according to an embodiment of the present invention.
2 and 3 are perspective views each showing an example of a conical pipe joint manufactured by the manufacturing method of the conical pipe joint according to an embodiment of the present invention.
4 is a plan view showing the material manufacturing step in the manufacturing method of the conical pipe joint according to the embodiment of the present invention.
5 is a perspective view showing an example of a mold manufactured in the mold manufacturing step in the manufacturing method of the conical pipe joint according to the embodiment of the present invention.
Figure 6 is an exploded perspective view of Figure 5;
7 is a cross-sectional configuration view showing a mold according to another embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. For convenience of description, components shown in the drawings may be exaggerated, omitted, or schematically represented.

1 is a flowchart of a method for manufacturing a conical pipe joint according to an embodiment of the present invention, and FIGS. 2 and 3 are each showing an example of a conical pipe joint manufactured by the manufacturing method of a conical pipe joint according to an embodiment of the present invention It is a perspective view, and FIG. 4 is a plan view showing the material manufacturing step in the manufacturing method of the conical pipe joint according to the embodiment of the present invention.

As shown in Figure 1, the manufacturing method of the conical pipe joint according to the embodiment of the present invention is largely divided design step (S10), material production step (S20), mold production step (S30), material heating step (S40) , including a section manufacturing step (S50) and a section assembling step (S60).

The dividing design step S10 divides the conical pipe joint 10 into a plurality of sections 11 divided along its perimeter in consideration of the dimensions of the conical pipe joint 10 to be manufactured as shown in FIG. 2 . This is the design stage.

Here, the conical pipe joint 10 is a special large-sized pipe joint 10 used in the plant field, etc., and has a large conical shape that can connect a small diameter pipe from about 800 mm to a large diameter pipe from about 15,000 mm. It is a pipe joint (10).

Therefore, in the division design step ( S10 ), the volume and weight of the mold to be described later can be significantly reduced by designing the large conical pipe joint 10 to be divided into a plurality of sections 11 .

Each section 11 is designed to divide the conical pipe joint 10 into two or more along its perimeter. At this time, the section 11 divided along the circumference of the conical pipe joint 10 may be divided into 4 to 12 depending on the size of the conical pipe joint 10 .

Accordingly, the conical pipe joint 10 is made of a plurality of sections 11 each having the same or similar size and shape. (10) can be manufactured.

On the other hand, when the conical pipe joint 10 is formed in an elongated shape as shown in FIG. 3 , each section 11 divides the conical pipe joint 10 along its periphery and up and down. can be designed According to this, when the number of sections 11 divided along the circumference of the conical pipe joint 10 is four, the four sections 11 are again divided up and down to create a total of eight sections 11 .

In addition, when the conical pipe joint 10 is formed in an elongated shape up and down as shown in FIG. 3 , each section that forms the upper part of the conical pipe joint 10 among the respective sections 11 (hereinafter, 'upper section') (referred to as '11A)') and each section constituting the lower portion of the conical pipe joint 10 (hereinafter referred to as 'lower section (11B)') is preferably designed so that the position of the joint 12 is different, respectively. do. That is, in a state where each section 11 is assembled to form one conical pipe joint 10, the joint portion 12A of each upper section 11A and the joint portion 12B of each lower section 11B are arranged to be displaced from each other. Designed, according to this structure, it is possible to prevent the junction 12 of each section 11 from intersecting in a '+' shape in the completed conical pipe joint 10, so the rigidity of the part where the junction 12 intersects. This vulnerability can be prevented.

In the material manufacturing step (S20), as shown in FIG. 4, the shape of the material 11' for manufacturing each section 11 is designed in a developed view, and the flat material 11' according to the developed view. is the stage of making

In this step, the development plan is designed so that the material 11' for manufacturing each section 11 is arranged in an optimal shape on the iron plate M, which is a raw material, and the iron plate M is press-worked according to the development diagram. A flat plate material 11' is produced.

That is, in this step, not only the development of each material 11' is designed, but also the structure in which each material 11' is arranged on the iron plate M is optimized to minimize the loss of the iron plate M, which is a raw material. The material 11' will be designed and manufactured so that it can be.

The mold manufacturing step ( S30 ) is a step of designing and manufacturing a mold for manufacturing each section 11 by molding the material 11 ′.

The mold manufactured in this step will be described later.

The material heating step (S40) is a step of heating the material 11'.

In this step, the material 11' is heated to a high temperature in order to hot-form the material 11' using the mold.

The section manufacturing step ( S50 ) is a step of manufacturing the respective sections 11 by molding the heated material 11 ′ with the mold.

That is, in this step, each section 11 that will form the conical pipe joint 10 is manufactured by hot forming the heated material 11 ′ using the mold.

The section assembling step ( S60 ) is a step of assembling each of the manufactured sections 11 to manufacture the conical pipe joint 10 .

In this step, the conical pipe joint 10 configured as shown in FIG. 2 is completed by assembling each section 11 by welding.

Hereinafter, a mold manufactured in the mold manufacturing step ( S30 ) will be described with reference to FIGS. 5 and 6 .

5 is a perspective view showing an example of a mold manufactured in the mold manufacturing step in the method for manufacturing a conical pipe joint according to an embodiment of the present invention, and FIG. 6 is an exploded perspective view of FIG.

5 and 6, the mold includes a lower mold 100 installed on the bottom of the press; and the material 11' installed on the upper side of the lower mold 100 so as to be movable up and down by pressing, by pressing the material 11' placed on the lower mold 100 during the lowering operation, together with the lower mold 100. ) to the upper mold 200 for forming the section 11;

Here, the lower mold 100 includes a lower molding plate 110 having a lower molding surface 111 having a shape corresponding to the outer surface of each section 11 (the surface forming the outer surface of the pipe joint) on the upper surface; and a seating surface 121 having a shape corresponding to the cross-sectional shape of the lower molding plate 110 is formed on each upper surface to support the lower molding plate 110 on the lower side of the lower molding plate 110, , a plurality of lower support plates 120 arranged to be spaced apart from each other along the width direction of the lower molding plate 110;

The upper mold 200 includes an upper molding plate 210 having an upper molding surface 211 having a shape corresponding to the inner surface (surface forming the inner surface of the pipe joint) of each section 11 on the lower surface; and a support surface 221 having a shape corresponding to the cross-sectional shape of the upper molding plate 210 is formed on each lower surface to support the upper molding plate 210 on the upper side of the upper molding plate 210, , and a plurality of upper support plates 220 arranged to be spaced apart from each other along the width direction of the upper molding plate 210;

The lower molding plate 110 and the upper molding plate 210 may be manufactured by press-working or bending a metal plate, and the lower support plate 120 and the upper support plate 220 are the lower molding plate 110 . ) and a slightly thicker metal plate than the upper molding plate 210 can be manufactured by processing it by laser cutting, electric discharge machining, or the like.

As a result, the lower molding plate 110 and the upper molding plate 210 have shapes corresponding to the outer and inner surfaces of the section 11 , respectively, and the material 11 ′ is molded into the section 11 . And the lower support plate 120 and the upper support plate 220 support them so that the lower molding plate 110 and the upper molding plate 210 can maintain their shape when the material 11' is molded.

On the other hand, as shown in FIG. 2, when the conical pipe joint 10 to be manufactured includes a knuckle part 10a formed at the upper end and lower end, respectively, the lower forming plate 110 and the upper forming plate. Reference numeral 210 may further include knuckle forming surfaces 112 and 212 for forming a part to be the knuckle part 10a in each of the sections 11 . According to this structure, when each section 11 is manufactured, the part to be the knuckle part 10a of the pipe joint 10 can be formed in advance, so that the knuckle part 10a can be formed without additional equipment and processes. can be easily formed. That is, in the prior art, the knuckle part 10a had to be formed through a separate spinning process after the pipe joint 10 was manufactured, so equipment and processes were required accordingly. However, according to the present invention, the knuckle part 10a is It can be easily formed without a separate spinning facility or process.

According to the mold configured as described above, the lower molding plate 110 and the lower support plate 120 constituting the lower mold 100 , and the upper molding plate 210 and the upper support plate 220 constituting the upper mold 200 ) can be manufactured by processing a metal plate, so that a mold for manufacturing the section 11 can be provided more quickly and inexpensively. In addition, since the mold configured as described above can be reduced in size and weight, there is an effect of easy handling.

Hereinafter, another embodiment of the mold will be described with further reference to FIG. 7 , but the same reference numerals are assigned to the same components as in the above-described embodiment, and repeated description thereof will be omitted.

7 is a cross-sectional view showing a mold according to another embodiment of the present invention.

As shown in FIG. 7 , the lower molding plate 110 includes a fixed plate 110A fixed to the lower support plate 120 , and a lifting plate 110B mounted on the lower support plate 120 to enable vertical flow. ) is included. And the lower mold 100 is connected to the lifting plate (110B) by raising the lifting plate (110B) to lift the section 11 placed on the lower molding plate (110) further includes a lifting drive unit 130 is done by

Here, the lifting plate 110B is formed to form an area in the entire area of the lower molding plate 110 excluding the area forming the fixing plate 110A. At this time, the fixing plate 110A is fixed to each of the lower support plates 120 by welding, and the lifting plate 110B is installed to rest on the lower support plate 120 to be non-fixed. installed possible.

The lifting driving unit 130 is made of a pneumatic cylinder or a hydraulic cylinder and is installed between two lower support plates 120 disposed adjacent to each other, and the rod of the cylinder is connected to the lifting plate 110B. Therefore, the lifting driving unit 130 is operated by pneumatic or hydraulic pressure to lift the lifting plate 110B to lift the section 11 placed on the lower forming plate 110, and accordingly, the operator operates the lower forming plate ( The section 11 separated from 110 can be easily moved.

The lifting plate 110B is formed to extend along the longitudinal direction of the lower forming plate 110, it is preferable that two are provided so as to be spaced apart from each other along the width direction of the lower forming plate 110. That is, the lifting plate 110B may be installed to form a two-row structure. According to such a structure, each lifting plate 110B supports both sides of the lower surface of the section 11 to stably lift the section 11 . At this time, the fork of the forklift enters the lower side of the section 11 and the section 11 ) can be easily moved.

In the foregoing, the present invention has been described with reference to limited embodiments and drawings, but it will be apparent to those skilled in the art that various modifications are possible within the scope of the technical idea of the present invention. Accordingly, the protection scope of the present invention should be defined by the description of the claims and their equivalents.

10: conical pipe joint 10a: knuckle part
11: Section 11': Material
11A: upper section 11B: lower section
12: junction 12A: upper junction
12B: lower joint 100: lower mold
110: lower molding plate 110A: fixed plate
110B: lifting plate 111: lower molding surface
112: knuckle forming surface 120: lower support plate
121: seating surface 130: elevator shaft
200: upper mold 210: upper molded plate
211: upper molding surface 212: knuckle molding surface
220: upper support plate 221: support surface

Claims (4)

a division design step (S10) of dividing and designing the conical pipe joint (10) into a plurality of sections (11) divided along its circumference in consideration of the dimensions of the conical pipe joint (10) to be manufactured;
A material manufacturing step (S20) of designing the shape of the material 11' for manufacturing each section 11 in a developed view, and manufacturing the flat material 11' according to the developed view;
a mold manufacturing step (S30) of designing and manufacturing a mold for manufacturing each section 11 by molding the material 11';
a material heating step of heating the material 11'(S40);
a section manufacturing step (S50) of forming each section 11 by molding the heated material 11' into the mold; and
Section assembly step (S60) of assembling each of the manufactured sections 11 to produce a conical pipe joint 10;
In the division design step (S10), each section 11 is designed to divide the conical pipe joint 10 along the perimeter and to divide it up and down. Each upper section 11A forming the upper portion and each lower section 11B forming the lower portion of the conical pipe joint 10 are the joint portion 12A of each upper section 11A and the joint portion of each lower section 11B ( 12B) A method of manufacturing a conical pipe joint, characterized in that it is designed to be displaced from each other.
According to claim 1,
The mold is
The lower mold 100 is installed on the bottom of the press; and
The material 11' is installed on the upper side of the lower mold 100 so as to be movable by a press, and the material 11' placed on the lower mold 100 is pressed by pressing the material 11' placed on the lower mold 100 during the lowering operation. An upper mold 200 for forming the section 11 into the section 11;
The lower mold 100,
a lower molding plate 110 having a lower molding surface 111 having a shape corresponding to the outer surface of each section 11 on the upper surface; and
As installed to support the lower molding plate 110 on the lower side of the lower molding plate 110, a seating surface 121 having a shape corresponding to the cross-sectional shape of the lower molding plate 110 is formed on each upper surface, A plurality of lower support plates 120 arranged to be spaced apart from each other along the width direction of the lower molding plate 110;
The upper mold 200,
an upper molding plate 210 having an upper molding surface 211 having a shape corresponding to the inner surface of each section 11 on its lower surface; and
As installed to support the upper molding plate 210 on the upper side of the upper molding plate 210, a support surface 221 having a shape corresponding to the cross-sectional shape of the upper molding plate 210 is formed on each lower surface, A method of manufacturing a conical pipe joint comprising a; a plurality of upper support plates (220) arranged to be spaced apart from each other along the width direction of the upper molding plate (210).
3. The method of claim 2,
The lower molding plate 110 includes a fixed plate 110A fixed to the lower support plate 120, and a lifting plate 110B mounted on the lower support plate 120 to enable vertical flow,
The lower mold 100 is connected to the lifting plate 110B by elevating the lifting plate 110B to lift the section 11 placed on the lower molding plate 110, further comprising a lifting driving unit 130 A method of manufacturing a conical pipe joint, characterized in that it is made.
4. The method of claim 3,
The lifting plate (110B) is formed to extend along the width direction of the lower forming plate (110) is provided with two conical, characterized in that arranged spaced apart from each other along the longitudinal direction of the lower forming plate (110) A method for manufacturing a pipe joint.

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