KR100544325B1 - a valve-body made with steel plate and its manufacturing method - Google Patents

Abstract

The present invention relates to a valve body made of a steel plate and a method for manufacturing the same, and is formed by cutting, bending, and joining of a steel plate, the opening hole 11 is formed in the lower portion, the cylindrical hole provided with a flow path hole 12 on the side The main body 10 is formed in the phase, the main flow of the fluid through the opening hole 11 and the passage hole 12 and; The side body 20 is formed by cutting, bending, and joining the steel plate and joined to an end portion of the flow path hole 12 of the main body, and serves as an auxiliary flow path for controlling or assisting the main flow of the fluid formed in the main body 10. Based on the technical gist of the product, the valve body can be easily manufactured with the desired shape and material through cutting, bending, and joining of the steel plate, and there is no need to have a wood or mold according to the size and material of the valve. By selecting the material, the valve body can be manufactured without any material constraints, and the production can be made in the working environment at room temperature without the attention required in the casting process, and the harmful gas generated during the casting work is suppressed to reduce the worker's working environment. It relates to a steel plate valve body and a method of manufacturing the same that can be improved.

Valve body iron plate cutting bending joint

Description

Valve valve body and its manufacturing method {a valve-body made with steel plate and its manufacturing method}

1-manufacturing flowchart of the iron plate valve body according to the present invention.

Figure 2-a front sectional view showing an embodiment of the present invention and a development view showing the manufacturing process thereof.

Figure 3 is a front sectional view showing a second embodiment of the present invention and a development view showing the manufacturing process thereof.

Figure 4 is a front cross-sectional view showing a third embodiment of the present invention and a development view showing the manufacturing process thereof.

<Description of Major Symbols Used in Drawings>

10: main body 11: opening hole

12: Euro ball 20: Side body

30: connection pipe Ⅰ: display step

Ⅱ: Cutting step Ⅲ-1: First bending step

Ⅳ-1: Individual bonding step Ⅲ-2: Secondary bending step

Ⅳ-2: Interconnection stage

The present invention relates to a valve body made of a steel plate and a method for manufacturing the same, and more particularly, to form a main body and a side body separately by cutting, bending, and joining the steel plate and joining the side body to the flow path of the main body The present invention relates to a valve body having a structure that can be easily manufactured in a desired shape and size through the selection, cutting, and bending of a steel sheet, and a method of manufacturing the same.

In general, the valve body corresponds to the outer frame of the valve and forms a main body in which the main flow of the fluid flows, and is connected to the inside of the main body to form an auxiliary flow to control the main flow of the fluid or to desire a new oil. It consists of a side body that switches in the direction, and the main movement path and accommodation of the fluid so that the entire valve can control the flow rate and the oil quality by combining and correlating with various oil control devices which are other components of the valve. It provides a space part.

Conventionally, such a valve body was manufactured integrally through a casting process, but there is a limitation that the valve body can only be made of a material suitable for casting in relation to the use of the valve body, and it is difficult to smoothly supply and receive these materials used for casting. In order to integrally form the valve body by casting, it is difficult to manufacture the mold and mold according to the material, shape, and size separately in consideration of the bent shape, space, and size of the valve body. There was this.

In addition, special care is required in handling high-temperature castings and mold devices. Residual defects occurring during the casting process require precise inspections, which reduces productivity, and are not found even during inspection of valve bodies due to the characteristics of castings. Often defects that cannot be compensated for by modifications to the process or equipment are often present, and the manufacturer always has a risk that can be derived accordingly.

The present invention invented to solve the above problems, an object of the present invention is to provide a steel plate valve body and a manufacturing method that can be easily produced in a desired shape and material through cutting, bending, bonding of the iron plate.

In addition, according to the size and material of the valve it is not necessary to have a neck, mold, and to provide a steel plate valve body and a manufacturing method that can be produced without the constraint of the material by the selection of the steel sheet to another object.

The present invention for achieving the object as described above, is formed by cutting, bending, joining the iron plate material, the open hole 11 is formed in the lower portion, is formed in a cylindrical shape provided with a flow path hole 12 on the side A main body 10 through which the main flow of the fluid flows through the opening hole 11 and the passage hole 12; The side body 20 is formed by cutting, bending, and joining the steel plate and joined to an end portion of the flow path hole 12 of the main body, and serves as an auxiliary flow path for controlling or assisting the main flow of the fluid formed in the main body 10. Steel valve valve body consisting of ;;

Here, the flow path hole 12 of the main body is cut into a square, the side body 20 is joined to the rectangular flow path hole 12 is bent in a circular shape extending in the outer circumferential direction toward the outer end portion Examples are included.

In addition, the end of the opening hole 11 or the passage hole 12 of the main body is bent to the outside, the inner end of the connection pipe 30 and the side body 20 is the opening hole 11 or the passage Another embodiment is contacted and tightly coupled to the protruding end of the ball 12.

In addition, the main body 10 is provided with an open hole 11 and a flow path hole 12 to which various oil control devices are coupled or become auxiliary flow paths, and a side body coupled to the flow path hole 12 of the main body ( 20) In the manufacturing of the valve body consisting of, the display step (I) for displaying the cutting and bending line of the main body 10 and the side body 20 on the iron plate surface; A cutting step (II) of cutting the iron sheet according to the developed view; A first bending step (III-1) of bending the cut iron plate into a basic shape of each of the main body 10 and the side body 20; An individual joining step (IV-1) for joining and fixing the ends of the bent iron plate on an integrated iron plate; Steel plate valve body manufacturing method including the; and the mutual bonding step (IV-2) for mutually bonding the main body 10 and the side body 20 to the overall shape of the valve body to another technical gist. .

Here, after the individual bonding step (IV-1), the secondary bending step (III-1) of bending the local parts of the main body 10 or the side body 20 to form protrusions and depressions; .

Therefore, there is an advantage that the valve body can be easily manufactured in a desired shape and material through cutting, bending, and joining of the iron plate.

In addition, there is no need to have a neck, mold according to the size and material of the valve, there is another advantage that can be produced without the constraints of the material by the selection of the iron plate material.

In addition, the production can be made in a working environment at room temperature without the attention required in the casting process, there is another advantage that the harmful gas generated during the casting operation can be suppressed to improve the working environment of the worker.

Hereinafter, the iron valve body and the manufacturing method according to the present invention having the configuration as described above will be described in detail with reference to the drawings. 1 is a manufacturing flow chart of the iron plate valve body according to the present invention, Figures 2, 3, 4 is a front sectional view showing each of the first, second, and third embodiments of the present invention and a development view showing the manufacturing process thereof.

The present invention is composed of a main body 10 is the main flow of the fluid and the side body 20 is connected to the main body 10 is a secondary flow of the fluid, the main body 10 and the side body ( 20) Each is formed by cutting, bending and joining the steel sheet, and finally, they are joined to each other to form an integral valve body.

The valve body corresponds to the outer frame of the valve that provides the main movement path and the receiving space of the fluid, the main body 10 is formed in a cylindrical shape of the upper and lower open to the main body of the fluid through the opening hole (11) A flow path is formed, and a side path 20 is provided with a flow path hole 12 to which the side body 20 is connected, and the side body 20 is joined to an end of the flow path hole 12 to the main body 10. The internal connection creates a pathway through which secondary flows control the main flow of the fluid or divert new oil in the desired direction.

The main body 10 and the side body 20 is a display step (I) for displaying the cutting and bending line of the main body 10 and the side body 20 on the iron plate surface, and the cutting and cutting displayed on the iron plate Cutting step (II) for cutting according to the developed view with reference to the curve, and primary bending step (III-1) for bending the cut iron plate to the basic shape of each of the main body 10 and the side body (20) And, through the individual bonding step (IV-1) for joining and fixing the end of the bent iron plate on an integral iron plate sequentially completed separately, the main body 10 and the side body 20 bonded individually The valve body is formed into a finished product through the interconnection step (IV-2) of mutually bonding the valve body to the overall shape.

The display step (I) is a process of displaying the position, shape, and the like of the intersected end portions on the iron plate surface so as to precisely cut, bend, and join the iron plate surface, taking into account when the valve body manufacturing process is performed semi-automatically or manually. If the production of the valve valve body of the iron plate is made completely automatic, it can be replaced by the process of writing data on the automatic machine without having to fill in the dimensions on the iron plate as described above.

The cutting step (II) refers to the cutting and bending lines displayed on the iron plate surface in the display step (I), and then cuts the iron plate by putting a spare or the like so as to be suitable for manufacturing into a desired shape through the bending and joining process which will be passed afterwards. In the process, the main body 10 or the side body 20 is a step of removing the individual body from the iron plate material, in the case of the main body 10 to form the opening hole 11 or the passage hole 12 Step.

The first bending step (III-1) is a process of forming an internal space by bending the iron plate cut through the cutting step (II) to the basic shape of each of the main body 10 and the side body 20, In the case of the main body 10 is a step of bending to have a passage having a sequential change in the shape of a circle and an ellipse, the case of the side body 20 in the shape of a square, a circle or an ellipse.

In the individual bonding step (IV-1), the main body 10 and the side body are fixed by joining the end portions of the iron plate bent through the primary bending step (III-1) to integral steel plates by welding or the like. In the process of completing the basic shape of (20), since the valve body is used for controlling the flow of fluid, the quality of the product is determined according to the airtightness of the bonded state.

The mutual bonding step (IV-2) is a final process of completing the main body 10 and the side body 20 by the individual bonding step (IV-1) to each other to complete the joint to the overall shape of the valve body By precisely joining together with the jig operation for maintaining the perpendicularity and horizontality of the product, it is possible to precisely control the oil in the main body 10 by expanding or contracting the flow path of the side body 20. .

Iron plate valve body according to the present invention will be described in detail for the following three examples. First, the first embodiment shown in FIG. 2 will be described.

In the embodiment, the valve body has a cylindrical shape having an open top and bottom, and the main body 10 having a rectangular flow path hole 12 formed on the left and right sides thereof, and joined to the rectangular flow path hole 12 and in an outer circumferential direction toward the outer end. Consists of a side body (20) bent in a circle extending to.

The main body 10 has a horizontally long shape and is cut into a rectangle having a rectangular through hole inside, bent in a cylindrical shape, end-joined and fixed, the open hole 11 on the upper and lower sides, the flow path hole 12 on the left and right sides The side body 20 is cut in a trapezoidal shape, including four bent lines formed at equal intervals at narrow ends and bent, end-joined and fixed in a cylindrical shape, and joined to the flow path hole 12. One end portion has a quadrangular shape and the outer end portion has a circular cross section while the inner space is extended toward the outside.

In general, the valve body is an opening hole formed in the upper portion of the opening hole 11 formed above and below the main body 10 is covered by a cover or installed by closing an oil control device, the main body 10, the lower part Since the three openings having a fluid opening including the opening hole 11 and the passage hole 12 formed in the, the upper opening is closed on the contents of the present invention including the first embodiment and the embodiment to be described below Even if only the former structure is described, it is considered to include the contents of the closure of one side of the open hole (11).

3 and 4 illustrate a valve body having a more complicated shape than that of the first embodiment and a manufacturing process thereof, and the individual bonding step (IV-1) during the manufacturing process of the first embodiment. And a secondary bending step (III-1) of bending the local parts of the main body 10 or the side body 20 to form protrusions and depressions.

The valve body according to the second embodiment is joined to the main body 10, the upper and lower open and the circular flow path hole 12 is formed on the left and right sides, and the flow path hole 12 on the left side, the outside of the main body 10 The side of the side body 20 formed with a new flow path in the up and down direction, and the right side of the side body 20 joined to the flow path hole 12 on the right side, and a new flow path in the up and down direction is formed inside and outside the main body 10. It is made of wealth.

The main body 10 has a horizontally long shape and is cut into a rectangle having two circular through-holes on the inside, bent in a cylindrical shape, end-joined and fixed to open holes 11 up and down, flow path holes 12 on the left and right sides After being formed in a basic shape forming an inner space portion, the end of the flow path hole 12 on the left side has a shape that is bent outward by plastic deformation, the flow path hole 12 on the right side of the The entire right side including the passage hole 12 has a shape bent outwardly

The left side of the side body 20 is in contact with and closely coupled to the protruding end of the flow path hole 12 is bent outwardly and the space portion connected to the main body 10, and introduced from the main body 10 It is divided into a space part that forms a vertical flow path that becomes a new auxiliary flow path of the fluid or an auxiliary flow path of the inflow path into the main body, and is cut into a shape for forming and joining each space part, respectively, and bent into a cylindrical shape, It is end joined and fixed to have a "ㅏ" shape.

The right side of the side body 20 is made up of a space part connected to the main body 10 and a space part that forms a new auxiliary flow path in the vertical direction in the same way as the left part. In addition, a new auxiliary flow path in which a main flow path is formed inside the body 10 is further provided so that each space portion is formed to have a "ㅐ" shape by cutting, bending, end joining, and fixing. 12) is fixed.

Referring to the iron plate valve body according to the third embodiment, the side body 20 of the valve body according to the third embodiment is the same space part configuration and manufacturing process as the left side of the side body 20 of the second embodiment However, at the end of the manufacturing process of the main body 10, the upper and lower openings 11 are bent by plastic deformation to have a shape that narrows toward the outside, so that the connecting pipe 30 for providing oil is opened up and down. When coupled to the protruding end of the ball 11, the inner space portion is configured to expand and contract sequentially so that the inflow and outflow into the main body 10 can proceed smoothly.

According to the present invention, as in the above embodiments, it is possible to easily produce the valve body in the desired shape and material through cutting, bending, joining of the iron plate, it is necessary to have a neck, mold according to the size and material of the valve As it saves production cost according to manufacturing space and expensive mold and heat treatment cost, it can produce valve body without material constraints by selecting steel plate material and prevent defects that occurred in casting process. The effect of improving the merchandise and reliability of the product can also be obtained.

The present invention by the configuration as described above, there is an effect that the valve body can be easily produced in the desired shape and material through the cutting, bending, joining of the iron plate.

In addition, there is no need to retain the neck and mold according to the size and material of the valve, there is another effect that the valve body can be produced without the material constraints by the selection of the steel plate.

In addition, the production can be performed in the working environment at room temperature without the attention required in the casting process, there is another effect that the harmful gas generated during the casting operation can be suppressed to improve the working environment of the worker.

Claims (5)

It is formed by cutting, bending, and joining the steel plate, and has an open hole 11 formed at a lower portion thereof, and is formed in a cylindrical shape having a flow path hole 12 at a side thereof, and the open hole 11 and the flow path hole 12 are formed. A main body 10 through which main flow of the fluid is made; It is formed by cutting, bending, and joining the iron plate, and is connected to the end of the passage hole 12 of the main body in a tubular shape having an inner space portion communicating with the main body 10, Iron plate valve body, characterized in that consisting of; side body (20) which is an auxiliary flow path for controlling or assisting the main flow of the fluid made. According to claim 1, The flow path hole 12 of the main body, The side body 20 is cut into a rectangular shape, the side body 20 is joined to the rectangular passage hole 12 is bent in a circular shape extending in the circumferential direction toward the outer end; iron plate valve body, characterized in that. The method of claim 1, wherein the opening hole 11 or the passage hole 12 of the main body, The end is bent to the outside, the inner end of the connecting pipe 30 and the side body 20 is in contact with and closely coupled to the protruding end of the opening 11 or the flow path (12); Steel valve body. The main body 10 is provided with an open hole 11 and a flow path hole 12 to which various oil control devices are combined or become auxiliary flow paths, and a side body 20 coupled to the flow path hole 12 of the main body. In manufacturing the valve body consisting of, A display step (I) of displaying the cut and bent lines of the main body 10 and the side body 20 on an iron plate surface; A cutting step (II) of cutting the iron sheet according to the developed view; A first bending step (III-1) of bending the cut iron plate into a basic shape of each of the main body 10 and the side body 20; An individual joining step (IV-1) for joining and fixing the ends of the bent iron plate on an integrated iron plate; And the mutually bonding step (IV-2) of joining the main body (10) and the side body (20) which are individually joined to each other according to the overall shape of the valve body. The method of claim 4, wherein after the individual bonding step (IV-1), The second body bending step (III-1) to form a protrusion and a depression by bending the local portion of the main body (10) or the side body (20); Iron plate valve body manufacturing method characterized in that the progress.

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