KR102318542B1 - Manufacturing method of invertor box - Google Patents

Abstract

The present invention relates to a manufacturing method of an inverter box, and more particularly, a manufacturing method of an inverter box that can store an inverter by performing sheet metal fabricating, bending, cutting, and boring on a raw metal material to process the raw metal material into a desired shape, size, etc. The manufacturing method of the inverter box according to the present invention can automate manufacture of the inverter box, thereby promoting mass production of the inverter box.

Description

Inverter box manufacturing method {MANUFACTURING METHOD OF INVERTOR BOX}

The present invention relates to a method of manufacturing an inverter box, and more particularly, an inverter capable of storing an inverter by performing sheet metal, bending, cutting, and perforating processing on the raw metal material to process the metal raw material into a desired shape, size, etc. It relates to an inverter box manufacturing method for manufacturing the box.

An inverter, a power converter installed in various equipment, is connected between the motor and the battery to convert direct current (DC) into alternating current (AC) or convert alternating current (AC) into direct current (DC). do.

Various electronic components such as a switching device such as a Field Effect Transistor (FET) and an Insulated Gate Bipolar Transistor (IGBT), and a capacitor are embedded in the inverter.

In particular, as industries in various fields, including electric vehicles, continue to develop, the demand for the inverter as well as the demand for the inverter box in which the inverter is built-in is continuously increasing. It can be seen that it is very important to improve manufacturability, workability, etc. through this, but there is still no technology for realizing the automation of such an inverter box manufacturing method.

On the other hand, as a prior art for this, Republic of Korea Patent Registration No. 10-1842672, etc. exist.

The present invention has been devised to solve the above problems, and it is an object of the present invention to provide an inverter box manufacturing method capable of realizing automation of a manufacturing method of an inverter box accommodating an inverter to achieve mass production of inverter box manufacturing. .

Inverter box manufacturing method according to the present invention for the purpose of solving the above problems, a sheet metal step of sheet metal raw material, and a cutting step of cutting the metal base material sheet metal sheet metal by the sheet metal step into a plurality of intermediate materials having different sizes and a bending step of bending a portion of the first intermediate material, the second intermediate material, and the third intermediate material cut by the cutting step to form the main plate material, the sub-plate material and the auxiliary material, respectively, and a hole in the main plate material, the sub-plate material and the auxiliary material A drilling step of drilling a hole, and a polishing step of grinding the main plate material, the sub-plate material and the auxiliary material, and a wall forming step of bonding the main plate material to each other to form a wall, and bonding the sub-plate material to the inner surface of the wall A partition wall forming step of forming a partition wall in the accommodating space formed in the wall, and an auxiliary material bonding step of bonding the auxiliary material to the bottom surface of the wall.

In addition, a plurality of curved surfaces are formed by the bending step, and the plurality of curved surfaces include curved surfaces having different bending directions from each other.

In addition, the method further includes a through-hole forming step of forming a through-hole in one surface of the wall so as to accommodate the inverter into the receiving space, and the opening and closing door can be coupled to the inner surface of the wall provided with the through-hole. The method further includes a coupling groove forming step of forming a coupling groove along the inner side.

In addition, the joint is configured so that both a bolting method and a welding method are used.

The present invention having the above configuration, steps and characteristics has the advantage of realizing automation of the manufacturing method of the inverter box accommodating the inverter to promote mass production of the inverter box manufacturing.

1 is a flowchart of an inverter box manufacturing method according to the present invention.
2 is a view showing a main plate material, a sub-plate material, and an auxiliary material on which the bending is performed.
3 is a view showing a bending machine.
Figure 4 is a view showing a cavity (Cavity) formed through laser processing.
5 is a view showing an inverter box having a wall formed therein;

The present invention is intended to be described in detail in the text of the embodiment (態樣, aspect) (or embodiments) can be applied to various changes and can have various forms. However, this is not intended to limit the present invention to the specific disclosed form, it should be understood to include all modifications, equivalents and substitutes included in the spirit and scope of the present invention.

The terminology used herein is only used to describe a specific embodiment (aspect, aspect, aspect) (or embodiment), and is not intended to limit the present invention. The singular expression includes the plural expression unless the context clearly dictates otherwise. In the present application, terms such as comprises or consists of are intended to designate that the features, numbers, steps, operations, components, parts, or combinations thereof described in the specification exist, but one or more other features It is to be understood that it does not preclude the possibility of the presence or addition of numbers, steps, operations, components, parts, or combinations thereof.

Unless defined otherwise, all terms used herein, including technical and scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the related art, and should not be interpreted in an ideal or excessively formal meaning unless explicitly defined in the present application. does not

~1~, ~2~, etc. described in the present specification will be referred to only to distinguish that they are different components, and are not limited to the order of manufacture, and their names in the detailed description and claims of the invention are may not match.

The present invention relates to a method of manufacturing an inverter box, and more particularly, an inverter capable of storing an inverter by performing sheet metal, bending, cutting, and perforating processing on the raw metal material to process the metal raw material into a desired shape, size, etc. It relates to an inverter box manufacturing method for manufacturing the box.

First, as shown in Figure 1, the inverter box manufacturing method according to the present invention is largely a sheet metal step (S0), a cutting step (S1), a bending step (S2), a drilling step (S3), a polishing step (S4), It includes a wall forming step (S5), a barrier rib forming step (S6), and an auxiliary material bonding step (S7).

In addition, an alloy containing iron, aluminum, etc. may be used as the type of the metal raw material used in the present invention, and it is not limited to a specific type of metal.

And the sheet metal step (S0) of sheet metal raw material means a step of processing the raw metal material into a thin and wide plate-shaped iron plate shape, which is one of the processing methods to make various shapes by deforming the object using plasticity.

By using the sheet metal step (S0) to produce a metal plate material corresponding to the base material (母材) of the main plate material 100, the sub-plate material 200, and the auxiliary material 300. Here, the base material of the main plate 100, the sub-plate 200, and the auxiliary material 300 means a state in which the raw metal material is processed only in the form of an iron plate.

And here, the main plate 100 means a configuration used as a wall, the sub plate 200 means a configuration used to form a partition in the receiving space formed inside the wall, and the auxiliary material 300 is an opening and closing door It means a configuration that is coupled to the inner surface of the wall to form a coupling groove (D1) on the inner corner so that it can be coupled or a configuration used to partition the space of the bottom of the wall. If simply arranged in size order, the main plate 100 is the largest, the sub plate 200 is next, and the auxiliary material 300 has the next size.

And in the sheet metal step (S0), an automated machine tool coupled with a numerical control device may be used, and accordingly, the automation of sheet metal processing may be realized, and ultimately, there is an advantage that work efficiency can be improved.

And these metal plates need to be cut or bent to form a wall or mounted inside according to the design of the inverter box or the like, but to be cut or bent for connection and assembly with another member, the present invention cuts the base material to a predetermined size It includes a cutting step (S1) and a bending step (S2) of bending a portion of the cut base material.

The cutting step (S1) of cutting the metal base material formed by the sheet metal step (S0) into a plurality of intermediate materials having different sizes may be performed through laser processing.

And bending a portion of the first intermediate material, the second intermediate material, and the third intermediate material cut by the cutting step (S1) to form the main plate 100, the sub-plate 200 and the auxiliary material 300, respectively, a bending step ( S2) may be performed on each side of the metal plate, as shown in FIG. 2 .

And the bending surface (C) formed by the bending step (S2) may be used as a bonding surface for bonding each main plate 100 to form a wall.

In addition, a plurality of curved surfaces C are formed by the bending step S2, and the plurality of curved surfaces C include curved surfaces C having different bending directions from each other.

Here, as shown in FIG. 2 , that the bending directions include the curved surfaces C different from each other means that the curved surfaces C go through the bending step S2 again, and the curved surfaces C are arranged adjacent to each other. means to be

As described above, when the auxiliary material 300 is bonded to the bottom surface of the wall when the bending surfaces C having different bending directions are included, a wider bonding surface can be obtained, and also on the bonding surface. Bolting may be performed by performing a drilling step (S3) of drilling a hole (H1) in the hole (H1), so there is an advantage that various types of bonding methods can be selectively employed.

In addition, the bending step (S2) may be performed with a bending machine M1 commonly used in the art, as shown in FIG. 3 .

And it includes a drilling step (S3) of drilling a plurality of holes (H1) in order to be joined by bolting to another member. Specifically, it includes a drilling step (S3) of drilling a hole (H1) in the bonding portion of the main plate 100, the sub-plate material 200, and the auxiliary material 300.

In order to drill the hole H1, a Numerical Control Turret punch press (NCT) may be used.

The NCT is a method in which the amount of movement of the workpiece (metal plate, etc.) with respect to the tool is automatically controlled according to the input numerical information by including a numerical control device including a high-speed CPU, and the hole (H1) of various diameters is It is a punch press configured to enable batch processing.

And the drilling step (S3) using the NCT with a mold of various shapes such as embossing, louver, burring, and lance may be performed. Of course, implementation of using a mold having a shape other than the mold described above is not excluded.

And in order to form a cavity (H2) (Cavity) having a larger diameter or more complex shape than the hole (H1), a cavity (H2) forming step performed through laser processing rather than processing using NCT may be further included. can

As an example, as shown in FIG. 4 , in the case of a square shape and a circular cavity H2 formed on a metal plate, they are formed through laser processing.

And since the inverter accommodated in the inverter box manufactured according to the present invention repeatedly performs a high-speed switching operation in order to perform the function of power conversion, considerable heat is generated, so that the inverter is operated by the inverter while maintaining normal and durability. It is necessary to provide ventilation holes to dissipate the generated heat. Accordingly, the cavity H2 may be used as the ventilation hole.

And it may further include a polishing step (S4) of grinding the outer surfaces of the main plate 100, the sub-plate material 200, and the auxiliary material 300.

The grinding step (S4) refers to a grinding process step of flattening the uneven portion of the metal plate by rotating the grinding wheel at a high speed.

The grinding step (S4) may be performed with a conventional grinder, and as an embodiment of the grinder, a cylindrical grinder for finishing a shaft, etc. for general grinding, an internal grinding machine for grinding the internal surface, an internal surface/taper including a flat surface A plane grinder capable of shaving, the most widely used cylindrical outer periphery, and a universal grinder that grinds the inner surface of a hole, etc. can be used.

And a wall forming step (S5) of bonding the main plate 100 to each other to form a wall. Bolting bonding is used for bonding the main plate materials 100 to each other, and bolting bonding may be performed using the bending surface C formed by the bending step S2 as the bonding surface.

And a partition wall forming step (S6) of forming a partition in the receiving space formed in the wall by bonding to the inner surface of the wall with the sub-plate material 200 is included.

As shown in FIG. 5 through the partition wall shape step, it is possible to obtain the effect of partitioning the accommodation space in the inverter box.

In addition, various methods such as a bolt bonding method and a welding method may be employed for bonding the sub-plate material 200 to the inside of the wall.

Thereafter, a through-hole forming step of forming a through-hole in one surface of the wall to accommodate the inverter into the receiving space is included, and the through-hole forming step may also be performed through laser processing as described above.

And it may further include a coupling groove (D1) forming step of forming a coupling groove (D1) along the inner side of the wall so that the opening and closing door can be coupled to the inner surface of the wall provided with the through hole.

And in order to form the coupling groove (D1) on the inner side, as shown in FIGS. 2 and 5, the auxiliary material 300 formed by bending the third intermediate member into a digut shape is coupled to the inner surface of the wall. .

And as described above in order to combine the inner surface of the wall and the auxiliary material 300, the inner surface of each wall and the auxiliary material 300 are perforated by performing a perforating step (S3) using NCT (S3) By performing bolting to the hole (H1) formed by the coupling can be completed.

And, as shown in FIG. 5, the auxiliary material 300 is bonded to the bottom surface of the inside of the inverter box by the auxiliary material coupling step (S7) so that the space of the bottom surface can be partitioned. And, as the auxiliary material 300 is bonded, a seating space D2 may be formed on the bottom surface. An inverter or the like can be seated on the seating space D2.

In addition, both a bolting method and a welding method may be employed for the bonding between the main plate 100 , the sub-plate 200 , and the auxiliary material 300 .

The advantages are as follows. First, in the case of the bolting method, in order to perform the bolting method, the bending step S2 must be performed to form the bent surface C as described above, and the hole H1 to which the bolt is to be fastened to the bent surface C must be formed. A drilling step S3 of drilling is to be performed, wherein the bending step S2 is performed by the automatic bending machine M1 and the drilling step S3 is performed by the NCT. Therefore, in the case of the bolting method, there is an advantage that the operation speed is quite fast, uniformity, and the same quality of quality can be guaranteed.

And in the case of the welding method, since the strength of the weld depends on the function of the welder during manual welding, the same quality may not be guaranteed, but it has the advantage of being easy to maintain the airtightness of the joint and reducing the number of work processes. do.

In the present invention, the joint includes both the bolting method and the welding method so that both the advantages of the bolting method and the advantages of the welding method can be adopted.

On the other hand, the inside of the inverter box has a disadvantage that it is difficult to apply a composition such as a dye and a rust preventive agent (hereinafter a coating composition) evenly as a step is formed because various metal members are bonded to the bottom surface of the inverter box. Accordingly, in the application step according to the present invention, the cylindrical handle A1 on the upper portion and the lower portion of the handle A1 are coupled to the lower portion of the handle A1 so that the coating composition can be evenly applied even to the stepped portion, and the height of the lower surface can be adjusted differently. It can be performed with the application equipment having a base (A3) including the comb teeth (A2) of.

In the case of a conventional comb or brush for application of a coating composition, when the application object (0) is sweeping away the application object (0) having a stepped shape because the comb teeth (A2) in contact with the application object (O) are all the same in height, the stepped surface and There is a disadvantage that the coating composition cannot be applied evenly because the contact area is small or not uniform.

Accordingly, in the following, as shown in FIG. 6, by adjusting the height of the comb A2, the area in contact with the stepped surface as well as the flat surface is uniformly applied to the coating equipment that can evenly apply the coating composition to any surface. I would like to explain Although not shown in FIG. 6, a brush is provided on the side of each comb A2.

First, the application equipment includes a height adjusting means for adjusting the height of the comb teeth A2 penetrating the inside of the handle A1, as shown in FIG. 6, the height adjusting means is the handle A1. It includes a button member (A13) protruding from the upper portion of the, and when the user presses the button member (A13), the plurality of comb teeth (A2) make a step between each other, so that the portion in contact with the curved surface can be made to the maximum. . Through this, it is possible to ultimately bring the result that the coating composition is evenly applied to the application target (O) surface.

In order to correspond to the application target (O) surface of various shapes, the state of the lower surface before the user presses the button member A13, the user presses the button member A13 to the first stage, and the user presses the button member A13 ) as the second stage, it can be configured in three different ways.

Next, the height adjusting means is a vertical stand (A11) including a button member (A13) provided to protrude to the upper portion of the handle (A1) and the vertical stand (A11) is horizontal by contact according to the entry and exit in the vertical direction. It includes a horizontal bar (A12) moving in the direction. Here, the vertical direction means a height direction forming the height of the handle A1, and the horizontal direction means a direction perpendicular thereto. The vertical stand (A11) is coupled to the lower end of the button member (A13), and includes a lifting member (A113) built into the handle (A1). The elevating member A113 is configured to be in contact with the horizontal bar A12 as will be described later, and by such contact, the horizontal bar A12 is moved in the horizontal direction. And a step is formed between the plurality of comb teeth (A2) by pushing the comb teeth (A2) downward due to the horizontal movement of the horizontal bar (A12). And it is coupled to the lower portion of the handle (A1) and includes a base (A3) including a plurality of comb teeth (A2) on the lower surface, wherein the comb teeth (A2) are pairwise symmetrical with respect to the central central comb (A21). It includes a first lateral comb (A22) provided with and a second lateral comb (A23) provided on the outside of the first lateral comb (A22). And the horizontal bar (A12) is in contact with the first lateral comb teeth (A22), has a 'L' shape, one end is provided with an inclined portion having a downward inclination toward the inside, and a horizontal unit extending in the horizontal direction and the It includes a first horizontal stand (A121) including a vertical unit extending in the vertical direction to the horizontal unit. And the first horizontal bar (A121) adjusts the height of the first side comb (A22) by contacting the upper part of the first side comb (A22), and the second horizontal table (A122) is the second side comb (A22) By contacting the upper part of A23), the height of the second lateral comb teeth (A23) is adjusted. And this horizontal bar (A12) is built into the base (A3) is moved in the horizontal direction according to the vertical movement of the vertical bar (A11).

And the horizontal unit is formed on different heights of the vertical unit, and includes one horizontal unit 1211 and another horizontal unit 1212 having different lengths extending in the horizontal direction, and the one horizontal unit 1211 is It is provided above the other horizontal unit 1212, and the length extending in the horizontal direction is shorter than that of the other horizontal unit 1212. Accordingly, the pressing portion provided at the lower end of the elevating member A113 and in contact with the horizontal bar A12 can easily enter along the inclined portion, and the other horizontal unit 1212 is extended longer in the inward direction. Because there is, the horizontal bar (A12) can be further pushed outward when in contact with the other horizontal unit (1212). And the elevating member (A113) includes a protrusion member (A111) (A112) provided to protrude outward from the outer surface, the protrusion member (A111) (A112) is one protrusion member (A111) provided at the lower portion of the elevating member (A111) ) and the other protrusion member (A112) provided on the upper portion of the one protrusion member (A111) and more protruding in the horizontal direction than the one protrusion member (A111). When the protrusion member (A111) (A112) enters the entry part of the horizontal table (A12), which is the space in which the lifting member (A113) is lifted, the upper part of the protrusion member (A113) is in contact with the horizontal unit and the lifting member (A113) It is possible to prevent the return to the return point due to the return force of the elastic member. And it is preferable that the material of the protrusion members A111 and A112 is made of rubber or urethane having elasticity, thereby forcibly pushing up the button member A13 to the horizontal bar A12 and the vertical bar A11. ) can be returned to the return point.

Next, the horizontal bar A12 includes a second horizontal bar A122 that is formed to protrude to the outside of the first horizontal bar A121. The second horizontal bar (A122) is in contact with the upper surface of the second lateral comb teeth (A23), and a slope having an upward inclination toward the outside on the lower surface and a stepped portion connected to the slope to form a stepped portion. And the slope and the stepped portion should be provided with at least two or more, whereby the first side comb teeth (A22) and the second side comb teeth (A23) can form different steps. That is, when only one protrusion member (A111) enters the entry and comes into contact with one horizontal unit 1211, the upper stepped portion (P1) is in contact with the second lateral comb (A23), and one protrusion member (A111) Including the other protrusion member (A112) to enter the entry and when the other protrusion member (A112) is in contact with the other horizontal unit 1212, the lower stepped portion (P2) is a case in contact with the second side comb teeth (A23).

And the slope includes an upper slope (G1) provided outside the upper stepped portion (P1), the upper stepped portion (P1), and a lower slope (G2) provided between the lower stepped portion (P2). And when the lower stepped portion (P2) is in contact with the second side comb (A23), obviously, the upper stepped portion (P1) is in contact with the second side comb (A23) compared to the case of the second side comb ( A23) can be placed further down. That is, when the curvature is greater, the lower stepped portion (P2) is in contact with the second lateral comb (A23) rather than the first stepped state in which the upper stepped portion (P1) is in contact with the second lateral comb (A23). It would be desirable to carry out the application in accordance with it.

And the comb teeth (A2) is provided with an inclined surface having a downward inclination toward the outside with respect to the comb teeth (A2) on the upper portion, the length of the second inclined surface (I2) of the second side comb teeth (A23) is the first side It is formed longer than the length of the first inclined surface (I1) of the comb teeth (A22). This is to form a different step between the first side comb (A22) and the second side comb (A23), as described above.

The present invention described above with reference to the accompanying drawings is capable of various modifications and changes by those skilled in the art, and such modifications and changes should be construed as being included in the scope of the present invention.

100: main plate 200: sub plate
300: auxiliary material
C: bend surface
D1: coupling groove D2: seating space
M1: Bending machine
H1: Hall H2: Cavity

Claims (4)

In the inverter box manufacturing method for manufacturing the inverter box accommodating the inverter,
A sheet metal step of sheet metal raw material;
a cutting step of cutting the metal base material sheet metal by the sheet metal step into a plurality of intermediate materials having different sizes;
a bending step of bending a portion of the first intermediate material, the second intermediate material, and the third intermediate material cut by the cutting step to form the main plate material, the sub-plate material and the auxiliary material, respectively;
a perforating step of drilling holes in the main plate, the sub-plate and the auxiliary;
a polishing step of grinding the main plate material, the sub plate material and the auxiliary material;
a wall forming step of bonding the main boards to each other to form a wall;
a partition forming step of forming a partition in the receiving space formed in the wall by joining the sub-plate to the inner surface of the wall;
Auxiliary material bonding step of bonding the auxiliary material to the bottom surface of the wall;
including,
Further comprising the step of applying a composition (hereinafter referred to as a coating composition) such as a dye and a rust inhibitor after the auxiliary material bonding step,
The application step is performed with an application equipment comprising a cylindrical handle on the upper portion and a base coupled to the lower portion of the handle and including a plurality of comb teeth on the lower surface,
The dispensing equipment is
Penetrating the inside of the handle, including a height adjustment means for adjusting the height of the comb,
The height adjusting means includes a vertical bar including a button member protruding to the upper portion of the handle and a horizontal bar moving in the horizontal direction by contact with the vertical bar in the vertical direction,
The comb includes a first lateral comb and a second lateral comb that are provided symmetrically in pairs based on the central comb,
The horizontal bar is in contact with the upper portion of the first side comb a first horizontal bar for adjusting the height of the first side comb and a second for adjusting the height of the second side comb by contacting the upper part of the second side comb including a horizontal
The second horizontal band inverter box manufacturing method, characterized in that it comprises a plurality of stepped portions having different heights.
The method according to claim 1,
A plurality of curved surfaces are formed by the bending step,
Inverter box manufacturing method, characterized in that the plurality of curved surfaces include curved surfaces having different bending directions from each other.
The method according to claim 1,
Further comprising a through-hole forming step of forming a through-hole in one surface of the wall to accommodate the inverter into the receiving space,
Inverter box manufacturing method, characterized in that it further comprises a coupling groove forming step of forming a coupling groove along the inner side of the wall so that the opening and closing door can be coupled to the inner surface of the wall provided with the through hole.
The method according to claim 1,
The joint is an inverter box manufacturing method, characterized in that both a bolting method and a welding method are used.

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