KR100898239B1 - Method for manufacturing metal box using bending machine - Google Patents

Abstract

The present invention relates to a method for manufacturing a metal housing using a bending factory, the metal housing to be formed in the curved surface and the corner portion of the enclosure without having to use a mold for each product using the existing bending factory It is an object to provide a manufacturing method.

In order to achieve the above object, the present invention, in the manufacturing method of the metal enclosure in which the door is rotated in the front of the main body having a receiving space opened forward in the inside directly or indirectly coupled through the door frame, the metal plate to the door or A metal plate cutting process of cutting according to the specification of the door frame to form a material plate, and forming notches cut in the horizontal, vertical and diagonal directions so as to be connected to each corner of the material plate while forming a curved surface; Arranging the material plate between the upper mold and the lower mold of the bending processing apparatus and pressing the curved portion so that the horizontal and vertical circumferential portions are bent to form a door or door frame-shaped intermediate workpiece; An edge bending process of bending each corner portion such that adjacent horizontal and vertical circumferences of the intermediate workpiece are connected to each other while forming a rounded curved surface; Edge finishing process of welding and polishing the edge of the intermediate workpiece to complete the door or door frame; And it provides a metal housing manufacturing method using a bending machine factory comprising a coupling process for coupling the door or door frame to the front of the body produced separately.

Metal enclosure, door, door frame, bending processing device, mold, elastic support material

Description

METHOD FOR MANUFACTURING METAL CONTAINER USING BENDING FACTORY {METHOD FOR MANUFACTURING METAL BOX USING BENDING MACHINE}

The present invention relates to a method for manufacturing a metal enclosure using a bending processing plant, and more particularly, a drawing processing apparatus and a blanking processing apparatus and a product-specific dedicated product for manufacturing a housing by processing a metal plate. The present invention relates to a method of manufacturing a metal enclosure of improved quality at a low cost by round molding a peripheral portion and a corner portion of the enclosure without a mold.

Metal enclosures are used for the purpose of accommodating equipment for various purposes such as communication equipment, electrical equipment, and control equipment. This metal enclosure is equipped with a pivoting door in the front part of the main body with a receiving space open to the front, so that the door is normally closed and locked so that internal equipment is not exposed to the outside. It has a structure that can manage management such as maintenance and replacement.

Such a metal enclosure may be made of a structure in which the door is directly hinged to the body, or may be made of a structure in which a door frame coupled to the door is joined to the body by welding or the like, and each of the above-mentioned parts, namely, the body, the door, and the door frame. The back plate is generally manufactured by bending a circumferential portion and a corner portion by using a metal sheet bending machine.

Accordingly, the metal enclosure manufactured by the conventional method as described above has to be formed in an angular form around the periphery and the corner, so that the appearance quality is not good, and when carrying the enclosure or repairing / replacing the equipment inside, In many cases, such as when traveling around the enclosure, there is a high possibility that a person may be injured by being hit or scratched at the periphery and corners of the enclosure.

In order to improve these disadvantages, it is also possible to manufacture the enclosure formed by the circumference and the corner portion by forming a shape through drawing processing and removing the peripheral portion through blanking processing, but in this case, an expensive drawing processing apparatus and a blanking processing apparatus It is necessary to provide a dedicated mold individually for each product standard, and thus there is a problem in that manufacturing cost is high.

The present invention is to solve the problems as described above, the object of the present invention is to use a conventional bending machine factory, even without having a mold for each product by using a metal enclosure that can be formed in the circumference and corners of the enclosure It is to provide a manufacturing method.

According to the present invention for achieving the above object, in the manufacturing method of the metal enclosure in which the door is rotated in front of the main body having a receiving space open to the front therein directly or indirectly coupled through the door frame, A metal plate cutting process of cutting according to a specification of a door or door frame to form a material plate, and forming notches cut in a horizontal direction, a vertical direction, and a diagonal direction so as to be connected to each corner of the material plate while forming a curved surface; Arranging the material plate between the upper mold and the lower mold of the bending processing apparatus and pressing the curved portion so that the horizontal and vertical circumferential portions are bent to form a door or door frame-shaped intermediate workpiece; An edge bending process of bending each corner portion such that adjacent horizontal and vertical circumferences of the intermediate workpiece are connected to each other while forming a rounded curved surface; Edge finishing process of welding and polishing the edge of the intermediate workpiece to complete the door or door frame; And it provides a metal housing manufacturing method using a bending temporary factory value including a coupling process for coupling the door or door frame to the front of the body produced separately.

In the method of manufacturing a metal enclosure of the present invention, the circumferential bending process is performed by placing and pressing a material plate between a lower mold having an elastic support material of a synthetic resin material disposed therein and an upper mold having a curved molding surface. It is desirable to.

More preferably, it may further include an end finishing process of bending the outer end portion of the material plate cut by the metal plate cutting process so that a sharp cut surface is not exposed.

According to the present invention as described above, by processing the door or the door frame located in front of the housing in the form of the bent portion of the circumference and the corner portion by using the bending machine, the drawing can be removed after molding as in the processing method using the factory. Since no part is generated, it is possible to provide a higher quality metal enclosure at a lower cost without a post-processing device such as a blanking device.

In addition, by forming the curved surface naturally by the elastic support material inherent without forming the molding surface on the lower mold, even if the product specifications are different, the curved surface can be formed through the same mold to provide a mold for each product There is no need to further reduce manufacturing costs.

In addition, since the bending temporary plant for the end cut surface finishing process of the material plate can be shared and used in the circumferential bending process, the device cost can be further reduced.

The objects, features and advantages of the present invention described above will become more apparent from the following detailed description. Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a process diagram showing an embodiment of a metal enclosure manufacturing method using a bending temporary factory according to the present invention, Figures 2a to 2e shows a processing state for each process.

As shown in FIG. 1, the method of manufacturing a metal enclosure of the present invention includes a metal plate cutting process (S10), an end finishing process (S20), a circumferential bending process (S30), a corner bending process (S40), and a corner finishing process ( S50, S60) to produce a door or door frame of the enclosure, and combines the door or door frame to the front of the body separately produced (S70) to make a metal enclosure for a variety of uses, such as communication equipment, electrical equipment.

In more detail, the metal plate cutting process (S10) is a material plate of a suitable size and shape according to the specifications of the product to be processed, that is, the door or door frame, as shown in FIG. Cut to (10a). The illustrated embodiment illustrates that the material is applied to the manufacture of a metal enclosure in which the door is directly coupled to the main body, and the material plate 10a forms the door of the enclosure. In addition, in the cutting step S10, notches 11 cut in the horizontal direction, the vertical direction, and the diagonal direction so as to be connected to the four corners of the material plate 10a by forming a rounded curved surface by a bending process, which is a post-process. ).

On the other hand, the main body portion of the enclosure is manufactured in a conventional form having a receiving space with a front opening by processing a metal plate through a separate process.

The end finishing process (S20) is bent in a narrow width so that the sharp cut surface is not exposed to the outer end portion of the cut material plate (10a) as shown in Figure 2b. At this time, the shape of the finishing portion may be a shape bent in the form of the "c" shaped cross-section shown in the figure or may be a form of a curved cross-section, such as a circular shape.

The circumferential bending process (S30) is a process of bending the respective circumferential portions of the material plate (10a) by using a bending mill factory, as shown in Figure 2c the lower mold 20 installed on the base side of the bending processing apparatus The material plate (10a) is placed in the) and the upper mold 30 having a curved molding surface 31 is lowered to press the circumference of the material plate (10a) and bend to form a door shape, respectively. At this time, the elastic support member 25 made of a high elastic synthetic resin material such as a urethane pad is disposed in the lower mold 20. Accordingly, when the material plate 10a is pressed by the upper mold 30, the elastic support material 25 elastically deforms and supports the material plate 10a with an appropriate strength to form the molding surface of the upper mold 30 ( 31 is deformed in a state in which the material plate 10a is in close contact with each other, so that bending is performed in a curved shape that is smoothly curved according to the shape of the forming surface 31.

The corner portion bending process (S40) is to process each corner portion of the intermediate workpiece (10b) formed in the shape of a door approximately through the bending process as described above to the curved surface, as shown in Figure 2d adjacent horizontal and vertical Each corner portion 13 is bent so that the circumferential portions 14 and 15 are rounded and connected to each other. This may be achieved by various methods of rounding a part of the metal sheet into a curved shape. For example, each corner portion may be arranged in a jig having a convex or concave curved support surface, and then press or strike the opposite surface, or a mold having a convex or concave curved surface without jig. It may be made by the method of pressing or hitting.

The edge finishing process (S50, S60) is to finish the door 10 as shown in Figure 2e by finishing the edge portion 13 of the intermediate work (10b), first of the intermediate work (10b) The edges 13 are welded to fill the gaps or steps formed by the notches 11, and then the welds and the periphery are polished to remove the step and irregularities of the surface, so that each edge 13 is smooth as shown. The door 10 formed of a curved surface can be manufactured.

When the hinge 10 is coupled to the front of the main body 40 of the conventional type manufactured separately, the door 10 manufactured as described above may produce a metal enclosure as shown in FIG. 3.

The metal enclosure produced by the manufacturing method of the present invention as described above is formed in a curved surface circumferential portion 14, 15 and the corner portion 13 of the door 10 located in front, only the appearance is beautiful In addition, even if a person contacts or collides with the circumferential portions 14 and 15 or the edge portion 13, the risk of injury or injury may be significantly reduced, thereby providing a safer facility.

Moreover, the manufacturing method of the present invention is a bending process for bending the plate using a factory value does not occur after the process to remove the part, using the lower mold 20 is provided with the elastic support material 25 therein various The standard product can be manufactured in one mold. Accordingly, when the drawing processing plant is used for molding, there is no need for the blanking processing apparatus necessary for post-processing, and there is no need to have a separate mold according to the specification of the product, thereby reducing the production cost by reducing the device cost. .

Figure 4 shows another example of the metal enclosure manufactured by the present invention, which is the door 31 is indirectly coupled to the main body 40 by the door frame 31, the circumference of the door frame 33 is curved Has a structure. This enclosure is the metal plate cutting step (S10), end finishing step (S20), circumferential bending step (S30), corner bending step (S40), corners that were applied to the manufacture of the door 10 in the above-described embodiment Sub finishing processes (S50, S60) and the like can be produced by applying the same to the production of the door frame (33).

The present invention described above is not limited to the above-described embodiment and the accompanying drawings, and various substitutions, modifications, and changes are possible within the scope without departing from the technical spirit of the present invention. It will be evident to those who have knowledge of.

1 is a process progress diagram showing an embodiment of a method for manufacturing a metal enclosure using a bending plant factory in accordance with the present invention.

2A to 2E are process charts illustrating the above embodiment for each process.

3 is a perspective view showing an example of a metal enclosure manufactured by the method of the present invention.

Figure 4 is a perspective view showing another example of a metal enclosure produced by the method of the present invention.

Claims (3)

In the manufacturing method of the metal enclosure in which the door 10 is rotated in front of the main body 40 having a receiving space open in the front is directly or indirectly coupled through the door frame 33, The metal plate is cut in accordance with the specifications of the door 10 or the door frame 33 to form a material plate 10a, which is horizontally, vertically and so as to be connected to each corner of the material plate 10a while forming a curved surface. Metal plate cutting process (S10) to form a notch 11 cut in a diagonal direction; The intermediate plate in the form of a door 10 or a door frame 33 is disposed by placing the material plate 10a between the upper mold 30 and the lower mold 20 of the bending processing apparatus and pressing the curved portion in the horizontal and vertical directions. 10b) circumferential bending step of forming (S30); Corner bending process (S40) for bending the corners (13) so that the adjacent horizontal and longitudinal peripheral portion (14, 15) of the intermediate workpiece (10b) is connected to each other while forming a rounded curved surface (S40); An edge finishing process (S50, S60) of completing the door 10 or the door frame 33 by welding and polishing the edge portion 13 of the intermediate workpiece 10b; And It includes a coupling step (S70) for coupling the door 10 or the door frame 33 to the front of the body 40 separately manufactured, The circumferential bending process S30 may include a material plate between the lower mold 20 having the elastic support material 25 made of synthetic resin therein and the upper mold 30 having the curved surface 31. Method for producing a metal housing using the bending factory plant, characterized in that the bending by pressing and positioning (10a). delete The method of claim 1, Method for producing a metal housing using a bending factory factory further comprises an end finishing process (S20) for bending the outer end portion of the material plate (10a) cut by the metal plate cutting step (S10) so that a sharp cut surface is not exposed.

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