KR100394557B1 - Apparatus Of Metal Plate Embossed With Mesh-Type Groove For Duct - Google Patents

Abstract

The present invention relates to a metal plate for a duct and a manufacturing apparatus thereof, by forming a mesh-shaped bead of regular irregular irregular grid on the surface of the metal plate to improve the appearance of the duct and increase its rigidity.

In the apparatus for manufacturing a metal plate for ducts having mesh-shaped beads of the present invention, a driving motor, which is a driving unit, is seated, and a rectangular base plate having one post upright at four corners, and an upper base plate connecting the upper end of the post. A base frame composed of; A pair of roll stands upright on both side ends of the upper base plate of the base frame; A pair of upper and lower pinch rolls interposed through the bearings into the roll chocks assembled in the choke assembly grooves of both roll stands; A pair of upper and lower bead processing rolls assembled on both roll stands so as to be adjacent to the pinch rolls in the same manner as pinch rolls, each of which has a bead shape on its surface; And a power transmission consisting of a sprocket provided on one end of the rotating shaft of the drive motor and the pinch roll and the bead processing roll to drive the bead processing roll and the pinch roll, and a chain connecting these sprockets. .

Therefore, the duct metal plate formed by the apparatus for manufacturing a duct metal plate in which the mesh-shaped beads are formed of the present invention has a remarkable increase in rigidity and can reduce the thickness of the metal plate required for duct fabrication. The manufacturing apparatus for manufacturing the duct metal plate in which the mesh-shaped beads are formed can be reduced in cost by using a pair of bead processing rolls in which the bead shape is embossed and embossed. Since manufacture is made, the pattern of the beads formed on the metal plate is not only accurate and regular, but also has the advantage of improving productivity.

Description

Apparatus Of Metal Plate Embossed With Mesh-Type Groove For Duct}

The present invention relates to a manufacturing apparatus for manufacturing a metal plate used for the manufacture of a duct, and more particularly, by forming a mesh-shaped bead of regular irregularities lattice pattern on the surface of the metal plate for ducts to increase the rigidity of the duct, The present invention relates to a device for manufacturing a metal plate for a duct, in which a mesh-shaped bead can be formed by reducing the thickness of the metal plate for a duct, thereby reducing the manufacturing cost of the duct and improving the appearance of the duct.

With the development of building technology, modern buildings are getting higher for efficient use of land. In particular, in the case of high-rise office buildings, steel-framed buildings are the main components, and in order to reduce the heating and cooling costs of the building, there is a tendency to form a small size even by adopting a closed window or an open / closed window.

Therefore, in the case of high-rise office buildings, it is common to adopt an artificial air conditioning system rather than natural air conditioning. In the air conditioning system, the importance of ducts, which are air passages for circulation of air for heating and cooling the air, is increasing.

As described above, conventional ducts, which are indispensable in modern buildings, are generally manufactured by bending a galvanized steel sheet to have a rectangular cross section. As a result, the thickness of the steel sheet is increased to increase the duct rigidity, thereby increasing the manufacturing cost of the duct. Increasing the stiffness of the ducts has increased the cost of construction, because the stiffness of the building must also be increased by increasing its own weight.

Furthermore, as the building becomes larger and higher, the conventional duct must also increase in size. For the rigid reinforcement of the duct, the thickness of the metal plate for the duct must be increased. However, there is a limit in improving the duct stiffness by increasing the thickness. Therefore, the length of the duct is shortened, the number of the ducts must be increased, and a large amount of reinforcement is used. The complexity leads to an increase in the overall duct installation cost.

In addition, in the case of an industrial duct exposed to the outside in addition to the air conditioning duct, which is invisible by the interior and exterior of the building, it is not only preferable in terms of rigidity but also in appearance. That is, the metal plate generally used in the manufacture of a conventional duct is a simple plate or a metal plate in which a straight bead is formed at regular intervals in a direction perpendicular to the longitudinal direction of the duct to improve some duct stiffness. There is a drawback that the aspect of aesthetic appearance is not considered at all.

In particular, in the case of a duct using a flat plate, there is a vulnerability that can hardly absorb vibration caused by an earthquake or a machine.

The present invention is to solve the problems of the conventional metal plate for ducts, to form a bead that regularly crosses the surface of the metal plate for ducts to increase the stiffness of the duct, at the same time by the bent portion for the bead formation To provide a manufacturing apparatus for manufacturing a metal plate for a duct formed with a mesh bead that can not only absorb the vibration applied to some extent, but also the decorative appearance can be improved by the regular pattern pattern formed on the surface. There is an object of the present invention.

1 shows a metal plate for ducts according to the present invention,

(A) is a perspective view,

(B) is sectional drawing of the metal plate for ducts in which the bead of triangular cross section was formed,

(C) is sectional drawing of the metal plate for ducts in which the bead of circular arc cross section was formed.

Figure 2 is a schematic view showing a stiffness test method of a metal plate for ducts according to the present invention.

Figure 3 is a graph of the stiffness test results of the metal plate for ducts according to the present invention.

Figure 4 is a left perspective view of the metal plate manufacturing apparatus for ducts according to the present invention.

5 is a perspective view of the right side of the metal plate manufacturing apparatus for ducts according to the present invention.

Figure 6 is a rear view of the metal plate manufacturing apparatus for ducts according to the present invention.

7 is an operational state diagram of the metal plate manufacturing apparatus for ducts according to the present invention.

<Explanation of symbols for the main parts of the drawings>

DESCRIPTION OF SYMBOLS 1: Metal plate for ducts 11, 12, b: Bead 21: Bottom face of metal plate for ducts 31: 0.6 mm duct metal plate 32: 0.5 mm duct metal plate 31A: 0.6 mm conventional steel plate 32 B: 0.5 mm Conventional steel plate 41: base frame

41A: Post 41B: Lower base plate 41C: Upper base plate 42: Roll stand 42A: Cover plate 43: Pinch roll

43A, 43B: Sprocket 44: Bead processing roll 44A, 44B, 44C: Sprocket

B: Bolt C: Chain H: Choke assembly groove M: Drive motor MS: Sprocket P: Steel plate before molding DP: Metal plate for molded duct TS: Tension sprocket RC: Roll choke W: Weight d: Deflection amount

The above object of the present invention is achieved by forming a concave-convex lattice bead on the surface of a metal plate for a duct by a manufacturing apparatus having a pair of upper and lower rolls in which lattice beads are negatively and embossed, respectively.

The metal plate for duct of the present invention utilizes the work hardening property of a metal whose rigidity increases by processing, and increases the deformation resistance against external forces acting in the longitudinal direction of the bent portion by the bent portion accompanying the bead formation. It is a metal plate that improves the overall stiffness of the duct and the absorption ability against vibration by providing absorption force against vibration acting in the width direction of the bent portion.

Each bead formed over the entire surface of the metal plate has a predetermined width and direction, and the beads thus formed have a group of straight beads parallel to one side and a group of straight beads of the other end parallel to the other side. That is, a regular cross pattern of a lattice or net form formed by the two bead groups intersecting with each other is formed on the surface of the metal plate, the plate for the duct of the present invention in all directions other than the external load applied in one direction It has deformation resistance against load and vibration.

The bead of the surface of the metal plate for ducts according to the present invention formed as described above is formed through the manufacturing apparatus of the present invention, a pair of cylindrical bead processing rolls that are mutually negative, embossed and rotated in the same shape as the beads. It is processed and formed by passing a metal flat plate through.

Details of the effects and the resulting effects, including the object and technical configuration of the present invention will be clearly understood by the following description with reference to the drawings showing a preferred embodiment of the present invention.

A perspective view and a cross-sectional view of the metal plate for ducts according to the present invention is shown in FIG.

As shown in the figure, the bead B formed on the surface of the metal plate 1 for ducts according to the present invention has a cross-sectional shape of a triangular bead 11 or an arc-shaped bead 12, each having a different direction from each other. The two parallel bead groups of parallel straight lines cross each other, and form a lattice or mesh pattern as a whole.

At this time, each of the beads (B) is a straight bead in the longitudinal direction, in consideration of the appearance effect, in order to increase the amount of work hardened by the beads, the shape of the two bead group as a wave form bead of the wave form rather than a straight form It is also preferable to form so as to cross each other.

Therefore, the duct metal plate 1 of the present invention in which the mesh-like or bead-shaped mesh bead is formed has improved rigidity than the conventional duct metal plate of flat plate by the bead, which is a work hardening site, and grasps the degree of increase in rigidity. To do this, the following tests were conducted.

A steel plate in an unprocessed state using a galvanized steel sheet having a width of 700 mm, a length of 1000 mm, a thickness of 0.5 mm, and 0.6 mm, and a metal plate for duct of the present invention in which beads having a triangular cross section are formed as shown in FIG. 2. Likewise, when the weight W is placed on the center of the steel sheet in the state in which the entire bottom surface 21 of the longitudinal direction both ends of the steel sheet is supported, the distance that the steel sheet sags, that is, the amount of sag d, is measured. Shown.

As can be seen from Fig. 3, the amount of deflection of the present invention duct metal plate 32, 31 having a thickness of 0.5 mm and 0.6 mm at the same load than that of a conventional duct steel sheet 32A, 31 A of the same thickness. In addition to the small size, it can be seen that the amount of deflection d is significantly reduced in the 0.5 mm duct metal plate 32 of the present invention than the thicker 0.6 mm conventional duct steel plate 31A.

That is, if only the amount of deflection is considered, the metal plate for duct of the present invention has the same rigidity with a thickness of at least 20% or more than that of the conventional duct steel sheet, which is a flat plate, which means that a weight reduction of at least 20 wt% or more is possible.

As described above, the metal plate manufacturing apparatus for duct of the present invention for forming the beads on the surface of the metal plate for improving the rigidity is a pair of two pairs in which the bead shape is negatively embossed to form the beads on the surface of the metal plate as a roll method. Of two sets of beads serving to stably supply the bead processing roll and the metal plate introduced into the roll bite of the bead processing roll in front of the bead processing roll and to hold the metal plate so that the bead is precisely processed on the metal plate. A pinch roll, a roll stand on which the bead processing roll and the pinch roll are assembled, a base frame on which the roll stand is seated and supported, a driving unit for driving the bead processing roll and the pinch roll, and a power source for transmitting the driving unit. The power transmission unit and the control unit, wherein the type of drive motor and the structure of the power transmission unit employed in the drive unit It doesn't matter much.

An apparatus for manufacturing a metal plate for a duct of an embodiment according to the present invention configured as described above is illustrated as a perspective view showing a left and right perspective view and a rear front view and a working state in FIGS. 4 to 7.

As shown, the metal plate manufacturing apparatus for duct of the present invention, the lower base plate 41B of the rectangular shape in which the drive motor (M) which is a drive unit is seated, and each post 41A is erected upright at four corners. A base frame 41 composed of an upper base plate 41C connecting upper ends of the posts 41A; A pair of roll stands 42 upright on both side ends of the upper base plate 41C of the base frame; A pair of upper and lower pinch rolls 43 inserted into the roll chocks RC assembled in the choke assembly grooves H of both roll stands 42 via a bearing; A pair of upper and lower bead processing rolls 44 assembled on both roll stands 42 in the same manner as the pinch rolls 43 so as to be adjacent to the pinch rolls 43, each of which has a bead shape on the surface; Sprockets (MS) 43A provided on the rotary shaft of the drive motor and one end of the pinch roll 43 and the bead processing roll 44, respectively, to drive the bead processing roll 44 and the pinch roll 43 ( 44A) and the power transmission part which consists of the chain C which connects these sprockets.

And, sprockets 43A and 43B are provided at both ends of the lower pinch rolls of the two pinch rolls 43, but the upper pinch rolls are not provided with the sprockets, and in the case of the bead processing roll 44, The sprockets 44A and 44B are provided at both ends of the bead processing roll, and the sprocket 44C is also provided at one end of the upper bead processing roll corresponding to the sprocket 44B.

That is, since the pinch roll is a lower pinch roll is a driving roll and the upper pinch roll is an idle roll, the upper pinch roll does not need a sprocket, but when the upper pinch roll needs to drive the chain, the chain is not caught. Sprockets coupled to one side sprocket 43B of the lower pinch roll may be provided at one end of the upper pinch roll.

However, in the case of a bead processing roll, the sprocket 44C of an upper bead processing roll meshes with the sprocket 44A of the lower bead processing roll which is a main drive roll, and it drives like a lower bead processing roll. This is because the metal plate is processed in the roll bite of the bead processing roll, and a large load is placed on the bead processing roll. Therefore, the upper and lower bead processing rolls must be driven together so that the roll at the roll bite which is the contact portion between the bead processing roll 44 and the metal plate is rolled. Slip between the metal plate and the work piece is suppressed, so that the bead processing is smoothly performed.

In addition, the space | interval between the pinch roll 43 and the upper and lower rolls of the bead processing roll 44 becomes a very important variable for productivity and quality in metal processing. Therefore, in order to adjust the gap between the pinch roll 43 and the top and bottom rolls of the bead processing roll 44, that is, to adjust the gap between the top and bottom roll chocks RC having bearings so that the rolls are assembled and rotated. Up and down choke gap adjustment bolt (B) is provided at the center of the cover plate (42A) coupled to the choke assembly groove (H) upper portion of the roll stand (42).

Looking at the operation principle of the metal plate manufacturing apparatus for duct of the present invention configured as described above based on Figure 7 as follows.

The sprocket MS provided on the rotation shaft of the drive motor is connected to the sprocket 43A provided at one end of the lower pinch roll by the chain C and the sprocket 44A provided at one end of the lower bead processing roll. Tension sprocket (TS) is rotatable on one side of the roll stand for tensioning the chain (C) between the sprocket (43A) of the lower pinch roll and the sprocket (44A) of the lower bead processing roll for accurate and stable power transmission. It is provided. Therefore, when the drive motor M is rotated, the lower pinch roll and the lower bead processing roll are rotated together by the chain.

At this time, the upper pinch roll is a non-driven roll that is rotated only when it is in contact with the lower pinch roll, sprocket (44C) provided on one side end of the upper bead processing roll, but the other end of the lower bead processing roll By being combined with the sprocket 44B provided at the end, the upper bead processing roll is driven in conjunction with the lower bead processing roll.

That is, when the drive motor is operated in a state in which the distance between the upper and lower pinch rolls is adjusted to be equal to or less than the thickness of the metal plate to be beaded, and the metal plate P is inserted into the roll bite of the pinch rolls, the upper and lower pinch rolls 43 As a result, the metal plate is moved into the roll bite of the bead processing roll 44 to produce a duct metal plate DP having a bead shape formed on the surface of the metal plate between the up and down bead processing rolls in which the bead shape is embossed.

As described above, the metal plate for ducts formed with the mesh-shaped beads of the present invention has a significant improvement in rigidity compared to the conventional duct metal plate, so that the thickness of the metal plate required for the duct fabrication can be reduced. There is an advantage in that the cost of transportation and construction is reduced according to the cost and duct installation.

And, in the case of high-rise buildings that require a large amount of ducts, the durability of the building is improved due to the reduction in the load of the entire duct, it is possible to reduce the construction cost, in the case of ducts exposed to the outside are formed regularly on the surface The bead can also improve the appearance, and regular bends are formed throughout the plate, so even if vibrations are caused by earthquakes, they will absorb vibrations to some extent and will also be effective in preventing the deformation of the ducts due to vibrations. do.

In addition, the manufacturing apparatus for manufacturing a metal plate for ducts in which the mesh beads are formed is a duct metal plate in which the mesh beads are formed by only one pass of roll processing by a pair of bead processing rolls in which the bead shape is embossed and embossed. Since manufacture is made, the pattern of the beads formed in the metal plate is not only accurate and regular, but also has an advantage of improving productivity.

Claims (3)

delete delete In the manufacturing apparatus which forms the mesh-shaped bead which is a regular lattice pattern of irregularities in the metal plate for ducts, A base frame comprising a lower base plate having a square shape in which a driving motor, which is a driving unit, is mounted, and having four posts upright at four corners, and an upper base plate connecting upper ends of the posts; A pair of roll stands upright on both side ends of the upper base plate of the base frame; A pair of upper and lower pinch rolls interposed through the bearings into the roll chocks assembled in the choke assembly grooves of both roll stands; A pair of upper and lower bead processing rolls assembled on both roll stands so as to be adjacent to the pinch rolls in the same manner as pinch rolls, each of which has a bead shape on its surface; A power transmission unit comprising a rotating shaft of a drive motor and sprockets provided on one end of the pinch roll and the bead processing roll to drive the bead processing roll and the pinch roll, and a chain connecting the sprockets; Apparatus for producing a metal plate for the ducts with a mesh-shaped bead, characterized in that comprising a.