KR20220083491A - Method of manufacturing non-combustible sound-absorbing metal ceiling panel that reduces manufacturing cost - Google Patents

Abstract

The present technology relates to a method for manufacturing a non-combustible sound-absorbing metal ceiling material. Non-combustible sound-absorbing metal ceiling material manufacturing method of the present technology comprising the steps of providing a base panel; forming a perforated plate by forming a plurality of perforated holes for sound absorption in the base panel; cutting the perforated plate to fit the required size of the ceiling material; deleting a slit portion forming portion with respect to the cut perforated plate; and bending the deleted perforated plate to form a slit portion in which the slit portion forming portion gathers with adjacent ceiling materials to form a single fastener. According to the present technology, it is possible to provide a ceiling material structure of a new structure that is compatible with fastening screws of various standards and accommodates tolerances between operations.

Description

{Method of manufacturing non-combustible sound-absorbing metal ceiling panel that reduces manufacturing cost}

The present invention relates to a method for manufacturing a non-combustible sound-absorbing metal ceiling material, and more particularly, to a method for manufacturing a non-combustible sound-absorbing metal ceiling material complying with KS standards.

Ceiling materials are used to finish the ceiling. It is applied indoors or outdoors of the building.

In the past, gypsum board was mainly used, and recently, metal ceiling materials made of galvanized steel sheet or aluminum are widely used. Galvalume can be applied for non-combustible performance, galvanized steel sheet for non-combustible performance. Galvalume is an aluminum zinc alloy plated steel sheet, and it is a high corrosion resistance hot-dip galvanized steel sheet that ideally combines the advantages of zinc and aluminum.

If sound absorption performance is required, a perforated hole may be arranged. By arranging small holes several millimeters in size on the front of the ceiling material, the ceiling material absorbs reverberation and reflections in the room to reduce noise.

Light-weight steel frame materials are used to install the non-combustible sound-absorbing metal ceiling material on the ceiling. As is known, clip bars, carrying rings, minor channels, hanger bolts and nuts, wire clips, hanger pins, clip bar joints, minor channel clips, anchors, leaf springs, and the like are used.

For example, it is possible to finish the ceiling construction by firmly binding several sheets of non-combustible sound-absorbing metal ceiling materials to the clip bar.

Closing caps are sometimes applied for more robust fixation. As disclosed in Korean Patent Registration Publication No. 10-1738564 (invention name: metal ceiling material finish) applied by the present applicant, the metal ceiling material finish is inserted and fixed with the clip bar disposed thereon at the place where the metal ceiling materials are gathered By being in close contact with the ceiling materials through, it is possible to firmly fix the ceiling materials. In particular, since ceiling materials installed outdoors of a building are exposed to harsh external environments and require more robust installation, application of a finishing cap is essential.

As it is applied for the strong installation of ceiling materials, the stable fixing force of the finishing cap and the fastening screw must be ensured.

For this purpose, it is necessary to install and manage the fastening screws with products exceeding a certain standard. The length of the fastening screw and the thickness of the body both play an important role in fixing force. It is required to have an appropriate length and to enter the upper clip bar, and it is required to support the weight of the ceiling materials with an appropriate thickness. In particular, the thicker the body, the stronger the support is possible, but since it is possible to break the predetermined arrangement interval of the ceiling materials during the installation process, a fastening screw of an appropriate thickness is required.

However, requiring field workers to use only fastening screws of a certain standard is resource-consuming and time-consuming. There are also tolerances between tasks. A ceiling material system that can accommodate a certain degree of tolerance and is compatible with fastening screws of various standards is required.

The inventor of the present invention has completed the present invention after long research and trial and error in order to solve this problem.

An embodiment of the present invention provides a ceiling material structure of a new structure that is compatible with fastening screws of various standards and accommodates tolerances between operations.

On the other hand, other objects not specified in the present invention will be additionally considered within the range that can be easily inferred from the following detailed description and effects thereof.

Method for manufacturing a non-combustible sound-absorbing metal ceiling material according to an embodiment of the present invention, comprising the steps of providing a base panel; forming a perforated plate by forming a plurality of perforated holes for sound absorption in the base panel; cutting the perforated plate to fit the required size of the ceiling material; deleting a slit portion forming portion with respect to the cut perforated plate; and bending the deleted perforated plate to form a slit portion in which the slit portion forming portion gathers with adjacent ceiling materials to form a single fastener.

Through the cutting step, a center portion in which the perforated holes are disposed and an edge portion extending in all directions from the center portion may be defined.

Through the bending, a first portion forming the front surface of the ceiling material and a second portion forming the inclined inclined surfaces of the ceiling material among the center portion may be defined.

The inclined bevel surface of the second portion may have a first angle that is an obtuse angle from the front surface, and the edge portion may extend from the second portion with a second angle that is an obtuse angle.

In the deleting step, the slit portion forming portion may include a portion of the center portion and a portion of the edge portion.

In the bending step, the slit portion may be formed over the second portion excluding the first portion and the edge portion.

In the deleting step, the slit portion forming portion may not interfere with the perforated holes disposed in the center portion.

In the bending step, the slit portion may have an inwardly angled depression.

The angled shape to the inside of the depression may have an angle of 80 to 100 degrees.

The bending includes forming a groove for coupling with an external lightweight steel frame material as a first concave-convex structure for the edge portion, and seating the external fixing cap bent portion as a second concave-convex structure for the second portion It may include the step of forming a groove-shaped trench to guide.

This technology can provide a non-combustible sound-absorbing metal ceiling material with a new structure that is compatible with fastening screws of various standards and accommodates tolerances between operations.

In addition, the present technology may provide a manufacturing method capable of reducing manufacturing cost by simplifying the manufacturing process.

1 is a view showing a ceiling material system for a non-combustible sound-absorbing metal ceiling material according to an embodiment of the present invention.
2 is a view showing a detailed configuration of the ceiling material constituting the ceiling material system for the non-combustible sound-absorbing metal ceiling material according to an embodiment of the present invention.
Figure 3 is a view showing in detail the fastener formed by the ceiling materials according to an embodiment of the present invention.
4 is a view illustrating various embodiments of a fastener according to an embodiment of the present invention.
5 is a view schematically showing a state in which the ceiling materials are fixed by a fixing cap according to an embodiment of the present invention.
6 is a view showing in detail the structure of the guide unit provided on the ceiling materials according to an embodiment of the present invention.
7 is a view showing a state in which the fixing cap is seated through the guide part provided on the ceiling materials according to an embodiment of the present invention.
8 is a flowchart illustrating a method of manufacturing a ceiling material according to an embodiment of the present invention over time.
9 is a view showing the overall shape of a perforated plate in which a slit portion forming portion is deleted according to an embodiment of the present invention.
FIG. 10 is a diagram illustrating a partially enlarged view of FIG. 9 .
It is revealed that the accompanying drawings are exemplified by reference for understanding the technical idea of the present invention, and the scope of the present invention is not limited thereby.

In the following, the most preferred embodiment of the present invention is described. In the drawings, thickness and spacing are expressed for convenience of description, and may be exaggerated compared to the actual physical thickness. In describing the present invention, well-known components that are not related to the gist of the present invention may be omitted. In adding reference numbers to the components of each drawing, it should be noted that only the same components are given the same number as possible even though they are indicated on different drawings.

1 is a view showing a ceiling material system for a non-combustible sound-absorbing metal ceiling material according to an embodiment of the present invention.

As shown in Figure 1, the ceiling material system (1) for a non-combustible sound-absorbing metal ceiling material (hereinafter simply referred to as 'ceiling material system') is the ceiling materials 100A, 100B, clip bars extending in the first direction (I) (10A, 10B), carrying carriages 20 extending in a second direction II intersecting the first direction, and hangers 30 extending in a third direction III intersecting the first and second directions may include Although not shown in the drawing, it may further include lightweight steel materials such as minor channels, wire clips, and anchors.

The ceiling materials 100A and 100B may be non-combustible sound-absorbing metal ceiling materials. Since the ceiling materials have sound absorption performance, they include perforated holes PH as described below.

The ceiling materials are bound to the clip bars 10A and 10B to constitute a ceiling material system. It is bound by being inserted and fixed to the clip bar through an insertion part 122 to be described later.

Although only the two clip bars 10A and 10B are illustrated in the drawing, the present invention is not limited thereto, and a large number of clip bars may be arranged in the second direction according to the construction area. The clip bar 10A may be referred to as a first clip bar, and the clip bar 10B may be referred to as a second clip bar. Also, a clip bar (not shown) arranged next to the second clip bar and side by side may be referred to as a third clip bar.

A plurality of ceiling materials 100A may be fitted and bound to the first clip bar 10A and the second clip bar 10B in a line along the extension direction I of the clip bar. These ceiling materials are referred to as first ceiling materials. A plurality of ceiling materials 100B may be fitted and bound to the second clip bar 10B and the third clip bar (not shown) in a line along the extension direction I of the clip bar. These ceiling materials are referred to as second ceiling materials. In the third clip bar (not shown) and the fourth clip bar (not shown), a plurality of ceiling materials may be fitted in a line along the extension direction (I) of the clip bar and be bound, so that the ceiling finishing construction for the entire area is reduced. can be done

The first ceiling material and the second ceiling material may have the same structure. The first ceiling material 100A and the second ceiling material 100B may be simply referred to as the ceiling material 100 .

Figure 2 is a view showing a detailed configuration of the ceiling material constituting the ceiling material system for the non-combustible sound-absorbing metal ceiling material according to an embodiment of the present invention.

As shown in FIG. 2 , the non-combustible sound-absorbing metal ceiling material 100 (hereinafter, simply referred to as 'ceiling material') includes a perforated area 110 and an extended area 120 . The perforated area is a portion exposed during construction and forms the entire surface of the ceiling material. The extended area is a part that is not exposed during construction, and serves for binding of the ceiling material to the clip bar and gripping for transfer between processes in the manufacturing process of the ceiling material.

A plurality of perforated holes PH for sound absorption are disposed in the perforated area 110 . In FIG. 1 showing the rear surface of the ceiling material, as the sound absorbing material such as nonwoven fabric is disposed, the perforated holes are not shown because they are covered, and the perforated holes may be formed through the base plate of the ceiling material.

Meanwhile, although FIG. 2 shows the base plate of the ceiling material as a center, the ceiling material may further include a sound absorbing material for sound absorbing in addition to the base plate, and an adhesive for bonding between the base plate and the sound absorbing material.

The base plate may be a steel plate serving as a base of the ceiling material and a plating layer, a coating layer, or a coating layer formed thereon. For example, the steel plate may have a thickness of 0.2 to 0.8 mm. The perforated hole may have a diameter (d1, FIG. 6 ) of 1.8 mm. The distance between the perforated holes (d2, FIG. 6 ) may be 5 mm. However, the present invention is not limited thereto.

The extension area 120 extends in all directions from the perforated area, and the insertion part 122 for coupling to the clip bar is disposed. The extension region may be formed by bending a portion extending from the base plate. The insertion part may be provided with a coupling groove (CH). The coupling groove strengthens the coupling by interacting with the clip of the clip bar during coupling.

Both the perforated area and the extended area may be formed of the same material.

The perforated area 110 according to the embodiment of the present invention includes a first perforated area 112 forming the front surface of the ceiling material and a second perforated area 114 forming inclined slopes of the ceiling material. The second perforated area may be formed by bending a portion of the perforated area. Note that perforated holes are also formed on the inclined slope. This greatly increases the perforated hole arrangement efficiency within a given area. It provides more efficient space to comply with perforated hole layout area according to industrial standards such as KS standards. In addition, the problem of interference with the slit that may occur while arranging the perforated hole up to the second perforated area is solved as described below.

The second perforated area may be positioned along the edge of the first perforated area. The extension area may be located along the edge of the second perforated area.

The second perforated area 114 extends from the front surface of the ceiling material with a first angle that is an obtuse angle. The extension area 120 extends from the second perforated area at a second angle that is an obtuse angle. The first angle and the second angle may be substantially the same. For example, the first angle and the second angle may be 135 degrees so that the inclined inclined plane may have an inclination of 45 degrees. However, the present invention is not limited thereto.

The ceiling material 100 includes a slit portion SL provided at a corner. The slit part is gathered with adjacent ceiling materials to form one fastener (FH, FIG. 3 ). For example, since the ceiling material may have a rectangular shape, a total of four slits may be provided for each corner.

Figure 3 is a view showing in detail the fastener formed by the ceiling materials according to an embodiment of the present invention.

And, Figure 4 is a view showing various embodiments of the fastener according to the embodiment of the present invention.

First, referring to FIG. 3 , one fastener FH is formed at a corner where four ceiling materials 100A, 100A, 100B, and 100B are gathered.

One slit SL may provide an open space corresponding to 1/4 of the fastener FH.

That is, the slit SL of the first ceiling member 100A and the slit SL of the second ceiling member 100B shown on the left side of the drawing, and the slit SL of the first ceiling member 100A shown on the right side of the drawing. And the slits SL of the second ceiling member 100B are gathered to form one fastener FH.

The fastener FH provides a space for entry of the fastening member 50 (for example, it may be a fastening screw) to be described later. The fastener is preferably formed to have a diameter equal to or greater than the thickness of the body 52 of the fastening screw.

The slit part SL according to an embodiment of the present invention may be formed over the second perforated area 114 and the extended area 120 for the ceiling material including the perforated area and the extended area. That is, it is not formed in the first perforated area.

Also, the slit portion may be formed so as not to interfere with the perforated holes disposed in the second perforated area. That is, the slit part does not delete the perforated hole.

According to the KS standard, the area to be formed per the total area of the perforated hole is determined (at the present time, it is more than 20% of the total area), so the perforated hole is not deleted by the formation of the slit part. This makes it possible to provide a slit portion that guarantees the area of the perforated hole designed according to the established KS standard. Even when the KS standard is changed or other industrial standards require 25% or more of the total area, the slit part can be formed within the range that does not delete the perforated hole.

To this end, the slit portion SL according to the embodiment of the present invention has a structure that is depressed in the inner direction DI of the ceiling member, as shown in FIG. 4 . It has an angled-shaped recessed part AS. The four corners of the fastener can thereby be formed. That is, a fastener having a size capable of accommodating the body 52 of the fastening screw is formed.

Referring to FIG. 2 together, the slit portion may have a rectangular prism shape as the slit portion has an angled recessed portion. That is, the slit portion of the square pillar provides 1/4 space for one fastener. Note that it is not a cylinder.

4A shows the angle α1 of the angled shape of the recessed portion AS of the slit according to the first embodiment of the present invention. 4B shows the angles α2 and α3 of the angled shape of the recessed portion AS of the slit portion according to the second and third embodiments. A fastener formed when α1 is FH1, a fastener formed when α2 is FH2, and a fastener formed when α3 is FH3, respectively. As shown in the drawing, the fasteners FH1 , FH2 or FH3 may have a polygonal structure.

The angle of the angular shape of the depression of the slit may be 80 degrees to 100 degrees. Preferably, it may be 90 degrees. The embodiment at 80 degrees is shown by α2 in the figure, the embodiment at 100 degrees by α3 in the figure, and the embodiment at 90 degrees by α1 in the figure.

The slit according to the embodiment of the present invention does not interfere with the area of the designed perforated hole of the ceiling material. This guarantees the area of the perforated hole designed according to the KS standard. In addition, in the process of bending a part of the perforated area to form the second perforated area, the edge portion ED ( FIG. 3 ) where the adjacent second perforated areas meet is more easily and naturally formed. In addition, the thickness of the body 52 of the fastening screw can be accommodated in an optimal size so as to secure the support structure of the ceiling material.

If it is less than 80 degrees, the possibility of deleting some of the perforated holes increases. In the case of more than 100 degrees, it becomes difficult to form the edge portion in the bending process. As it approaches 180 degrees, the fastener converges to a size close to the body of the fastening screw, making it difficult to accommodate tolerances that may occur in design or between operations.

According to an embodiment of the present invention, it is possible to provide a fastener of an optimal size that can accommodate a fastening screw of an appropriate thickness reflecting the tolerance without interfering with the design of the perforated hole.

5 is a view schematically showing a state in which the ceiling materials are fixed by a fixing cap according to an embodiment of the present invention.

6 is a view showing in detail the structure of the guide unit provided on the ceiling materials according to an embodiment of the present invention.

And, FIG. 7 is a view showing a state in which the fixing cap is seated through the guide part provided on the ceiling materials according to an embodiment of the present invention.

First, referring to FIG. 5 , the fixing cap 40 is in close contact with the ceiling materials through the fastening member 50 at the corner where the four ceiling materials 100A, 100A, 100B, and 100B are gathered to firmly fix them to the upper clip bar. .

The fastening member 50 may have a screw structure such as a piece nail. It may be referred to as a fastening screw. The fastening screw 50 may have a head 51 and a body 52 .

The fastening member 50 passing through the fixing cap enters the clip bar at the upper part through the fastener FH, and the fastening member is inserted and fixed with the clip bar to enable stable fixing of the ceiling materials.

The fixing cap 40 may include a bent portion 42 formed at an edge thereof. The bent part is closely attached to the space between the ceiling materials to increase the fastening force. In addition, in the process of fastening the fastening member, it serves as a stumbling block for rotation in the space between the ceiling materials, thereby increasing the efficiency of the screw tightening operation.

According to an embodiment of the present invention, the space between the ceiling materials in which the bent portion of the fixing cap acts is formed by the above-described second perforated area 114 . As shown in the figure, it is formed by a total of eight second perforated areas. That is, two adjacent second perforated areas of the first ceiling material 100A shown on the left side of the drawing and two adjacent second perforated areas of the second ceiling material 100B shown on the left side of the drawing, and shown on the right side of the drawing Two adjacent second perforated areas of the first ceiling material 100A and two adjacent second perforated areas of the second ceiling material 100B interact with the bent portion of the fixing cap.

At this time, according to an embodiment of the present invention, as shown in FIG. 6 , the second perforated area of the ceiling material may include a trench portion (G). In the drawing, in order to show an enlarged view, only the trench portions G provided in the second perforated areas adjacent to each ceiling material are shown, but each ceiling material may include a total of eight trench portions.

The trench portion G may have a groove shape. It may have a concave shape downward from the inclined bevel surface of the second perforated area.

The trench portion may be formed together in the process of forming the coupling groove CH of the above-described extended region. This is because both the coupling groove and the trench portion are concave-convex structures provided with respect to the base plate. For example, it may be formed by a press process.

The trench portion may be formed to have a predetermined inclination. As an example, it may have a mirror-symmetrical slope with the above-described edge portion. This guides the bent portion of the above-described fixing cap to be more closely attached to the space between the ceiling materials. That is, the trench portion may have a slope substantially coincident with the bent portion. This allows the bent portion to be seated directly into the trench portion.

In general, the trench portions guide the seating of the fixing cap at the corner where the four ceiling materials are gathered. That is, as shown in FIG. 7 , the seating of the fixing cap may be guided by a total of eight trench portions. The trench portions of the first ceiling material 100A and the second ceiling material 100B shown on the left side in the drawing guide the seating of the left bent portion of the fixing cap in the drawing. The trench portions of the first ceiling material 100A and the second ceiling material 100B shown on the right side in the drawing guide the seating of the right bent portion of the fixing cap in the drawing. The trench portions of the first ceiling materials 100A shown on the upper side in the drawing guide the seating of the upper bent portion of the fixing cap in the drawing. The trench portions of the second ceiling materials 100B shown on the lower side in the drawing guide the seating of the lower bent portion of the fixing cap in the drawing.

The trench portions according to an embodiment of the present invention further increase the role of the second perforated areas. The space between the ceiling materials in which the bent part of the fixing cap acts is formed by the second perforated area, and the trench part increases the fastening force by making the bent part more closely contact the space between the ceiling materials, and also locks in rotation in the process of fastening the fastening member By acting as a jaw, the efficiency of tightening the screw is further increased.

8 is a flowchart illustrating a method of manufacturing a ceiling material according to an embodiment of the present invention over time.

9 is a view showing the overall shape of a perforated plate in which a slit portion forming portion is deleted according to an embodiment of the present invention.

And, FIG. 10 is a diagram illustrating a partially enlarged view of FIG. 9 .

First, as shown in FIG. 8, the ceiling material manufacturing process according to an embodiment of the present invention includes the steps of providing a base panel (S110), forming perforated holes to form a perforated plate (S120), and cutting (S120). S130), removing the slit portion forming portion (S140), and bending (S150) may be included.

First, in step S110, the base panel includes a steel plate and a plating layer, a coating layer, or a coating layer formed thereon. The plating layer may be aluminum or a mixed layer of aluminum and zinc phosphate. The coating layer may be a polyester resin. The coating layer may be a ceramic coating.

For example, at least a portion of the base panel may be made of a cold rolled steel sheet. For example, the steel sheet may be formed through pre-processing, annealing (heat treatment), plating, alloying, temper rolling, and chemical treatment processes. The pretreatment of the steel sheet may be performed using an alkali solution. Plating may be performed by plating aluminum on a steel sheet or by plating a mixture of aluminum and zinc phosphate. The steel sheet may be plated with at least one of aluminum (Al) and zinc (Zn). In the plating of the steel sheet, the weight ratio of aluminum (Al) may be 55% and the weight ratio of zinc (Zn) may be 45% or less. The plating of the steel sheet may be performed for a specific range of time. For example, the plating time of the steel sheet may be 3 minutes to 15 minutes. If the plating time is less than 3 minutes, the thickness of the plating layer may be too thin. If the plating time is more than 15 minutes, the thickness of the plating layer may be too thick. The plated steel sheet can generate relatively little toxic gas in case of fire. At least a portion of the steel sheet may be coated with chromium as a post-treatment. When chrome is coated, it can be expected to improve the corrosion resistance and aesthetic effect of the base panel. A coating layer may be coated on the steel sheet. For example, at least a portion of the steel sheet may be preheated to 60 to 70 degrees (Celsius) as a pretreatment process. At least a portion of the steel sheet may be coated with chromium. For example, at least a portion of the steel sheet may be coated with a polyester resin. The thickness of the polyester to be coated may be 3 to 5 μm. At least a portion of the base panel may be coated with a ceramic. When the ceramic is coated, it can be expected to improve the corrosion resistance and aesthetic effect of the base panel. The steel plate constituting at least a portion of the base panel may have a thickness of 0.2 to 0.8 mm. If the thickness of the steel sheet is less than 0.2 mm, it may be difficult to secure the rigidity of the base panel. If the thickness of the steel sheet is greater than 0.8 mm, the weight of the base panel may be too heavy. The plating layer of the steel sheet constituting at least a part of the base panel may have a thickness of 5 to 50 μm.

Next, in step S120 , the perforated holes PH may be formed in a jig jig with a predetermined perforated hole diameter that satisfies a perforated area determined for the base panel and a spacing between the perforated holes.

A perforated plate is provided through step (S120).

The area in which the perforated holes are formed becomes the perforated area described above with reference to FIGS. 1 to 7 . In addition, as a part of the perforated area is bent, the above-described first perforated area and the second perforated area may be defined. Note that the perforated holes are formed in both the first perforated area and the second perforated area.

For example, the perforated holes may lead from one surface of the base panel to the other surface. The perforated holes may form a specific pattern. The perforated holes may form a passage through which sound waves generated in the room pass. Conversely, a portion of the base panel in which the perforated holes are not formed may be a region in which sound waves are reflected and/or a region in which heat is reflected in case of fire. The perforated hole may be formed in a specific shape. For example, the perforated hole may be formed in a circular shape. The diameter of the perforated hole may be, for example, 1.8 mm. An aperture ratio of the base panel may be defined. The aperture ratio of the base panel may mean a ratio of the area in which the perforated holes are formed to the total area of the perforated area described above in FIGS. 1 to 7 . For example, the aperture ratio of the base panel may be 10 to 40%. If the aperture ratio of the base panel is less than 10%, the proportion of sound waves passing through the perforated plate may be too small. In this case, the sound-absorbing function of the non-combustible sound-absorbing metal ceiling material may be too small. If the aperture ratio of the base panel is greater than 40%, it may be difficult to secure the rigidity of the perforated plate. Also, the heat reflection function of the perforated plate may be too small.

Then, in the cutting step (S130), the perforated plate manufactured through the steps (S110, S120) is cut to fit the required size of the ceiling material.

The perforated plate TP cut through step S130 is provided.

It corresponds to the process of cutting out parts other than the perforated area and the extension area described above in FIGS. 1 to 7 from the perforated plate.

Through the cutting step ( S130 ), a center portion C in which the perforated holes PH are disposed and an edge portion B extending in all directions from the center portion may be defined. The center part corresponds to the perforated area described above in FIGS. 1 to 7 . The edge portion corresponds to the extended region described above in FIGS. 1 to 7 .

Subsequently, in the deletion step (S140), the slit portion forming region (P_SL) is deleted with respect to the perforated plate (TP) cut in the step (S130).

Referring to FIG. 9 , the slit portion forming portion P_SL deleted in step S140 may include a portion P_SL1 of the center portion C and a portion P_SL2 of the edge portion B. Referring to FIG. That is, a part of the center part P_SL1 and a part of the edge part P_SL2 may be deleted. Accordingly, as described above with reference to FIGS. 1 to 7 , the slit portion may be formed over the second perforated area and the extended area.

Preferably, the slit portion forming portion P_SL does not interfere with the perforated hole PH disposed in the center portion C. That is, the slit portion forming portion does not include the perforated hole. Accordingly, as described above with reference to FIGS. 1 to 7 , the slit portion is formed so as not to interfere with the perforated holes disposed in the second perforated area.

It is preferable that the slit portion forming portion is deleted so that the slit portion has an inwardly angled depression as described above. To this end, a portion of the center portion P_SL1 may have a concave portion having an inwardly angled shape. Since a part of the center portion P_SL1 derives the angular depression described above in FIGS. 1 to 7 , the description of the depression may be equally applied to the depression, and a more detailed description thereof will be omitted. For example, the angle of the angular shape of the concave portion of the part P_SL1 of the center portion may be 80 degrees to 100 degrees.

Finally, in step S150, the deleted perforated plate having completed the steps S110 to S140 is bent to have a predetermined shape. The slit portion forming portion is bent to form a slit portion forming a single fastener by gathering with adjacent ceiling materials.

Through the bending step ( S150 ), a first portion R1 forming the front surface of the ceiling material and a second portion R2 forming inclined inclined surfaces of the ceiling material among the center portion C may be defined. The first portion corresponds to the first perforated area described above in FIGS. 1 to 7 . The second portion corresponds to the second perforated area described above in FIGS. 1 to 7 .

In step S150, the second portion is processed to have a sloped surface of the ceiling material at a predetermined angle with respect to the first portion forming the front surface of the ceiling material. In addition, the edge portion is machined to have a predetermined angle with respect to the second portion. The former angle and the latter angle may generally coincide.

In addition, in step S150, the edge portion is processed to be perpendicular to the front surface of the ceiling material, and an insertion portion for insertion and fixation of the clip bar is provided.

The slit portion formed through the bending step S150 may be formed over the second portion except for the first portion and the edge portion. In addition, the slit portion formed through the bending step may have an inwardly angled depression. The shape angled to the inside of the depression may have an angle of 80 to 100 degrees. As described above with reference to FIGS. 1 to 7 .

In addition, in step S150, the process of forming a concave-convex structure with respect to the edge portion may be further performed. The above-described coupling groove may be formed. In addition, a process of forming a concave-convex structure on the second part may be further performed. The above-described trench portion may be formed. The manufacturing process can be simplified by performing the coupling groove and the trench part capable of the press process in the same step (S150).

Meanwhile, in the bending step, an edge portion may be formed by the adjacent second portions, and the trench portion may be formed symmetrically with the edge portion.

When manufactured through the above-described steps, the operation is simplified, it is possible to reduce the manufacturing cost. If chamfering is performed after bending to form a slit portion of the ceiling material, a separate chamfering process or equipment for this is required. On the other hand, as in the embodiment of the present invention, by removing the slit portion forming portion before bending, it is possible to utilize the cutter process or equipment for the cutting step, which is the immediately preceding step. In addition, the process of transferring the perforated plate to the cutting step and the deletion step can also be continuously simplified.

The embodiments of the method for manufacturing a non-combustible sound-absorbing metal ceiling material according to the present invention have been described so far, and the configuration related to the non-combustible sound-absorbing metal ceiling material 100 described above in FIGS. 1 to 7 is also applicable to this embodiment as it is. Accordingly, a more detailed description will be omitted.

As described above, in the present invention, specific matters such as specific components, etc., and limited embodiments and drawings have been described, but these are only provided to help a more general understanding of the present invention, and the present invention is not limited to the above embodiments. , various modifications and variations are possible from these descriptions by those of ordinary skill in the art to which the present invention pertains. Therefore, the spirit of the present invention should not be limited to the described embodiments, and not only the claims to be described later, but also all those with equivalent or equivalent modifications to the claims will be said to belong to the scope of the spirit of the present invention. .

1: Ceiling material system for non-combustible sound-absorbing metal ceiling material
10A, 10B : Clip bar
20 : Carrying
30 : hanger
40: fixed cap
42: bend
50: fastening member
51, 52: head, body of the fastening member
100, 100A, 100B: Non-combustible sound-absorbing metal ceiling material
110: perforated area
112: first perforated area
114: second perforated area
120: extended area
122: insertion part
CH : bonding ohm
SL: slit
PH: perforated hole
FH, FH1, FH2, FH3 : fasteners
ED: Edge
AS : Rectangular shaped depression
G: trench
TP : Cut perforated plate
C: Center part of perforated plate
B: the edge of the perforated plate
P_SL: slit part formation site
P_SL1 : Part of the center part
P_SL2: part of the edge
R1: the first part of the center part
R2: second part of center part

Claims (10)

providing a base panel;
forming a perforated plate by forming a plurality of perforated holes for sound absorption in the base panel;
cutting the perforated plate to fit the required size of the ceiling material;
deleting a slit portion forming portion with respect to the cut perforated plate; and
A non-combustible sound-absorbing metal ceiling material manufacturing method comprising; bending the deleted perforated plate to form a slit portion in which the slit portion forming portion gathers with adjacent ceiling materials to form a single fastener. According to claim 1,
A non-combustible sound-absorbing metal ceiling material manufacturing method, characterized in that through the cutting step, the center portion in which the perforated holes are disposed and the edge portion extending in all directions from the center portion are defined. 3. The method of claim 2,
A method of manufacturing a non-combustible sound-absorbing metal ceiling material, characterized in that a first portion forming the front surface of the ceiling material and a second portion forming the inclined inclined surfaces of the ceiling material among the center portion are defined through the bending. 4. The method of claim 3,
the inclined bevel surface of the second part has a first angle which is an obtuse angle from the front surface,
The non-combustible sound-absorbing metal ceiling material manufacturing method, characterized in that the edge portion extends from the second portion with an obtuse second angle. 4. The method of claim 3,
In the deleting step, the slit portion forming portion is a non-combustible sound-absorbing metal ceiling material manufacturing method, characterized in that it includes a portion of the center portion and a portion of the edge portion. 4. The method of claim 3,
In the bending step, the slit portion is a non-combustible sound-absorbing metal ceiling material manufacturing method, characterized in that formed over the second portion and the edge portion except for the first portion. 4. The method of claim 3,
The non-combustible sound-absorbing metal ceiling material manufacturing method, characterized in that the slit portion forming portion in the deleting step does not interfere with the perforated holes disposed in the center portion. 4. The method of claim 3,
In the bending step, the slit portion is a non-combustible sound-absorbing metal ceiling material manufacturing method, characterized in that it has a recessed portion of an angled shape to the inside. 9. The method of claim 8,
A non-combustible sound-absorbing metal ceiling material manufacturing method, characterized in that the angled shape to the inside of the depression has an angle of 80 to 100 degrees. 4. The method of claim 3,
The bending step is
Forming a groove for coupling with an external lightweight steel frame material as a first concave-convex structure for the edge portion;
Non-combustible sound-absorbing metal ceiling material manufacturing method comprising the step of forming a groove-shaped trench for guiding the seating of the external fixing cap bent portion as a second concave-convex structure with respect to the second portion.

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