Method and system for manufacturing decorative semi-perforated sound absorbing board, and decorative semi-perforated sound absorbing board manufactured by manufacturing method

Abstract

Disclosed are a method and a system for manufacturing a decorative semi-perforated sound absorbing board, and a decorative semi-perforated sound absorbing board manufactured by the manufacturing method. A method for manufacturing a decorative semi-perforated sound absorbing board according to one embodiment of the present invention comprises: an eco-friendly board manufacturing step of manufacturing an eco-friendly board; an eco-friendly board groove formation step of forming, in the eco-friendly board, a plurality of grooves for a sound absorbing function; and an eco-friendly board surface printing step of printing on the surface of the eco-friendly board in which the grooves are formed, and thereby forming a printed layer.

Description

Manufacturing method and system for decorative semi-perforated sound-absorbing board, and decorative semi-perforated sound-absorbing board manufactured by the manufacturing method

[0001] The present invention relates to a method and system for manufacturing a decorative semi-perforated sound-absorbing board, and to a decorative semi-perforated sound-absorbing board manufactured by the manufacturing method, and more particularly, to a method and system for manufacturing a decorative semi-perforated sound-absorbing board, and to a decorative semi-perforated sound-absorbing board manufactured by the manufacturing method, which can express a variety of photo colors unlike in the past while still providing the original sound-absorbing function, thereby doubling the decorative effect of a wall surface by getting rid of a plain wall.

[0002] A sound-absorbing board is a type of functional board that absorbs noise and prevents it from transmitting to adjacent spaces. It is commonly installed on interior walls of buildings.

[0003] In the past, sound-absorbing boards were manufactured by inserting a certain sound-absorbing material into a frame made of wood or MDF, but recently, perforated boards are being used as an alternative to increase manufacturing convenience.

[0004] Meanwhile, considering that the sound-absorbing boards currently available on the market are mainly wooden sound-absorbing boards or magnesium sound-absorbing boards, and that they are all one-color products, the need for a new type of decorative semi-perforated sound-absorbing board has arisen because the boards are too monotonous and the decorative effect is bound to be poor.

[0005] Accordingly, the technical problem to be achieved by the present invention is to provide a method and system for manufacturing a decorative semi-perforated sound-absorbing board, which can express various photo colors unlike the conventional method while maintaining the original sound-absorbing function, thereby doubling the decorative effect of a wall surface by breaking away from a plain wall, and a decorative semi-perforated sound-absorbing board manufactured by the manufacturing method.

[0006] According to the present invention, while maintaining the original sound absorption function, it is possible to express a variety of photo colors, unlike conventional methods, thereby doubling the decorative effect of the wall surface, thereby moving away from a plain wall.

[0007] Figure 1 is a flow chart of a method for manufacturing a decorative semi-perforated sound-absorbing board according to one embodiment of the present invention.

[0008] Fig. 2 is a front view of a decorative semi-perforated sound-absorbing board manufactured by the method for manufacturing a decorative semi-perforated sound-absorbing board of Fig. 1.

[0009] Figure 3 is a cross-sectional view taken along line AA of Figure 2.

[0010] Figure 4 is a configuration diagram of a decorative semi-perforated sound-absorbing board manufacturing system according to one embodiment of the present invention.

[0011] Figure 5 is a control block diagram of the system of Figure 4.

[0012] Figure 6 is a schematic diagram of an eco-friendly board manufacturing device.

[0013] Figures 7 to 12 are drawings for explaining the eco-friendly board manufacturing device of Figure 6.

[0014] Figure 13 is a perspective view of an eco-friendly board.

[0015] Figures 14 and 15 are schematic diagrams of an eco-friendly board home forming device.

[0016] Figure 16 is a schematic diagram of an eco-friendly board protrusion cutting device.

[0017] Figure 17 is a flowchart of a method for manufacturing a decorative semi-perforated sound-absorbing board according to another embodiment of the present invention.

[0018] Fig. 18 is a front view of a decorative semi-perforated sound-absorbing board manufactured by the method for manufacturing a decorative semi-perforated sound-absorbing board of Fig. 17.

[0019] Fig. 19 is a cross-sectional view taken along line BB of Fig. 18.

[0020] Figure 20 is a configuration diagram of a decorative semi-perforated sound-absorbing board manufacturing system according to another embodiment of the present invention.

[0021] Fig. 21 is a control block diagram of the system of Fig. 20.

[0022] FIG. 22a is a schematic perspective view of a decorative semi-perforated sound-absorbing board manufactured by a method for manufacturing a decorative semi-perforated sound-absorbing board according to another embodiment of the present invention.

[0023] Figure 22b is a partial cross-sectional view of Figure 22a.

[0024] Figure 23 is a flowchart of a method for manufacturing a decorative semi-perforated sound-absorbing board according to another embodiment of the present invention.

[0025] Fig. 24 is a schematic structural diagram of a decorative semi-perforated sound-absorbing board for explaining the method of Fig. 23.

[0026] According to one aspect of the present invention, a method for manufacturing a decorative semi-perforated sound-absorbing board and a decorative semi-perforated sound-absorbing board manufactured by the method can be provided, characterized in that the method comprises: an eco-friendly board manufacturing step of manufacturing an eco-friendly board; an eco-friendly board groove forming step of forming a plurality of grooves for sound-absorbing function in the eco-friendly board; and an eco-friendly board surface printing step of forming a printed layer by printing the surface of the eco-friendly board on which the grooves are formed.

[0027] The above-mentioned eco-friendly board home forming step can form a home on the eco-friendly board using a predetermined home processing unit having a plurality of punches for processing home on the eco-friendly board, a punch head for supporting the plurality of punches, and a head up / down driving unit for driving the punch head up / down.

[0028] The above plurality of grooves can be arranged at equal intervals on the eco-friendly board.

[0029] Before performing the above-mentioned eco-friendly board surface printing step, an eco-friendly board protrusion cutting step may further be included, in which a protrusion protruding from one side of the eco-friendly board is cut without the groove being pierced through the eco-friendly board groove forming step using a predetermined protrusion cutting unit having a rotating cutter, a cutter driver for driving the rotating cutter, and a connecting portion connecting the rotating cutter and the cutter driver.

[0030] The above-mentioned eco-friendly board manufacturing step may include an eco-friendly raw material mixing step of mixing eco-friendly raw materials such as LM fiber and PET at a predetermined mixing ratio through an eco-friendly raw material mixing unit; a raw material processing step of processing the mixed raw materials into a semi-finished product having a predetermined thickness by lumping them using a raw material processing unit; a first cutting step of cutting the semi-finished product into a size suitable for impregnation using a first cutting unit; a composite agent impregnation step of impregnating the semi-finished product, which has been first cut, with a composite agent through a composite agent impregnation unit containing all of a composite agent, a dehumidifier, and an adhesive; and a drying step of drying the semi-finished product after completion of impregnation using a microwave drying unit.

[0031] The above-mentioned eco-friendly board manufacturing step may further include, after the drying step, a pressing step of pressing the semi-finished product through a pressing unit so that the outer surface of the semi-finished product does not rise.

[0032] The above-mentioned eco-friendly board manufacturing step may further include a second cutting step of completing the manufacturing of the eco-friendly board by cutting it to a predetermined size using a second cutting unit after the above-mentioned pressing step.

[0033] After performing the above eco-friendly board surface printing step, an eco-friendly board surface coating treatment step may be further included to form a protective coating layer by coating the printed layer area to protect the printed layer.

[0034] According to another aspect of the present invention, a method for manufacturing a decorative semi-perforated sound-absorbing board, characterized in that it comprises an eco-friendly board manufacturing step of manufacturing an eco-friendly board; and an eco-friendly board surface printing step of printing the surface of the eco-friendly board to form a printing layer, and a decorative semi-perforated sound-absorbing board manufactured by the manufacturing method can be provided.

[0035] According to another aspect of the present invention, a decorative semi-perforated sound-absorbing board manufacturing system can be provided, characterized by including: an eco-friendly board manufacturing device for manufacturing an eco-friendly board; an eco-friendly board groove forming device for forming a plurality of grooves for sound-absorbing function in the eco-friendly board as a post-process of the eco-friendly board manufacturing device; and an eco-friendly board surface printing device for forming a printing layer by printing the surface of the eco-friendly board on which the grooves are formed as a post-process of the eco-friendly board groove forming device.

[0036] The above-mentioned eco-friendly board manufacturing device may include an eco-friendly raw material mixing unit that mixes eco-friendly raw materials such as LM fiber and PET at a predetermined mixing ratio; a raw material processing unit that processes the mixed raw materials into a semi-finished product having a predetermined thickness by lumping them together; a first cutting unit that first cuts the semi-finished product into a size suitable for impregnation; a composite impregnation unit that impregnates the first-cut semi-finished product with a composite containing a composite agent, a dehumidifier, and an adhesive; and a drying unit that dries the semi-finished product after completion of impregnation using a microwave method.

[0037] The above eco-friendly board manufacturing device may further include a pressing unit that presses the semi-finished product so that the outer surface of the semi-finished product does not rise.

[0038] The above-mentioned eco-friendly board manufacturing device further includes a second cutting unit that completes the manufacturing of the eco-friendly board by performing a second cutting to a predetermined size, and the eco-friendly raw material mixing unit, the raw material processing unit, the first cutting unit, the composite agent impregnation unit, the drying unit, the pressing unit, and the second cutting unit form an inline process line that can be automatically performed.

[0039] The above-mentioned eco-friendly board home forming device includes a first loader into which the eco-friendly board is loaded; and a home processing unit that forms the home in the eco-friendly board loaded into the first loader, wherein the home processing unit may include a plurality of punches that process the home in the eco-friendly board; a punch head that supports the plurality of punches; and a head up / down driving unit that is connected to the punch head and drives the punch head up / down.

[0040] The above plurality of grooves can be arranged at equal intervals on the eco-friendly board.

[0041] A post-process of the above-mentioned eco-friendly board home forming device may further include an eco-friendly board protrusion cutting device that cuts a protrusion protruding from one side of the eco-friendly board due to the action of the above-mentioned eco-friendly board home forming device.

[0042] The above-described eco-friendly board protrusion cutting device may include a second loader into which an eco-friendly board having the protrusions formed thereon is loaded; and a protrusion cutting unit for cutting a protrusion protruding from one side of the eco-friendly board loaded into the second loader, wherein the protrusion cutting unit may include a rotary cutter for cutting a protrusion protruding from one side of the eco-friendly board without piercing the groove; a cutter driver for driving the rotary cutter; and a connecting unit for connecting the rotary cutter and the cutter driver.

[0043] The above-mentioned eco-friendly board manufacturing device, the eco-friendly board groove forming device, the eco-friendly board protrusion cutting device, and the eco-friendly board surface printing device may further include a system controller that organically controls the operations of the eco-friendly board manufacturing device, the eco-friendly board groove forming device, the eco-friendly board protrusion cutting device, and the eco-friendly board surface printing device to form an inline automatic process line.

[0044] In order to protect the above-mentioned printing layer, an eco-friendly board surface coating treatment device may be further included to form a protective coating layer by coating the printing layer area.

[0045] In order to fully understand the present invention, its operational advantages, and the objects achieved by the practice of the present invention, reference should be made to the accompanying drawings illustrating preferred embodiments of the present invention and the contents described in the accompanying drawings.

[0046] Hereinafter, the present invention will be described in detail by describing preferred embodiments thereof with reference to the attached drawings. The same reference numerals in each drawing represent the same components.

[0047] FIG. 1 is a flowchart of a method for manufacturing a decorative semi-perforated sound-absorbing board according to an embodiment of the present invention, FIG. 2 is a front view of a decorative semi-perforated sound-absorbing board manufactured by the method for manufacturing a decorative semi-perforated sound-absorbing board of FIG. 1, FIG. 3 is a cross-sectional view taken along line AA of FIG. 2, FIG. 4 is a configuration diagram of a decorative semi-perforated sound-absorbing board manufacturing system according to an embodiment of the present invention, FIG. 5 is a control block diagram of the system of FIG. 4, FIG. 6 is a configuration diagram of an eco-friendly board manufacturing device, and FIGS. 7 to 12 are drawings for explaining the eco-friendly board manufacturing device of FIG. 6, FIG. 13 is a perspective view of an eco-friendly board, FIGS. 14 and 15 are configuration diagrams of an eco-friendly board groove forming device, and FIG. 16 is a configuration diagram of an eco-friendly board protrusion cutting device.

[0048] Referring to these drawings, the present invention provides the original sound absorption function while expressing diverse photo colors unlike the conventional one, thereby allowing the decorative effect of the wall to be doubled, breaking away from a plain wall.

[0049] The present invention, which can provide such effects, can be applied to the decorative semi-perforated sound-absorbing board manufacturing method of FIG. 1, the decorative semi-perforated sound-absorbing board (1) manufactured by the decorative semi-perforated sound-absorbing board manufacturing method of FIG. 2, and the decorative semi-perforated sound-absorbing board manufacturing system of FIG. 4.

[0050] First, referring to FIG. 1, the method for manufacturing a decorative semi-perforated sound-absorbing board according to the present embodiment may include an eco-friendly board manufacturing step (S110), an eco-friendly board groove forming step (S120), an eco-friendly board protrusion cutting step (S130), and an eco-friendly board surface printing step (S140).

[0051] The eco-friendly board manufacturing step (S110) is a process for manufacturing a specific eco-friendly board (10, see Fig. 13) that is eco-friendly and has a semi-fireproof function. In other words, an eco-friendly board (10) having the specifications shown in Fig. 13 can be produced through the eco-friendly board manufacturing step (S110).

[0052] This eco-friendly board manufacturing step (S110) may include an eco-friendly raw material mixing step (S111) by an eco-friendly raw material mixing unit (110), a raw material processing step (S112) by a raw material processing unit (120), a first cutting step (S113) by a first cutting unit (130), a composite agent impregnation step (S114) by a composite agent impregnation unit (140), a drying step (S115) by a drying unit (150), a pressing step (S116) by a pressing unit (160), and a second cutting step (S117) by a second cutting unit (170), and by sequentially performing these steps, an eco-friendly board (10) for making a decorative semi-perforated sound-absorbing board (1) according to the present embodiment can be manufactured. Specific descriptions of the eco-friendly raw material mixing unit (110), raw material processing unit (120), primary cutting unit (130), composite impregnation unit (140), drying unit (150), pressing unit (160), and secondary cutting unit (170) are described in the system below.

[0053] The eco-friendly board home formation step (S120) is a process of forming a plurality of grooves (11) for sound absorption function in an eco-friendly board (10), as shown in FIGS. 14 and 15. This process can be performed using an eco-friendly board home formation device (200).

[0054] At this time, a plurality of grooves (11) can be arranged at equal intervals on the eco-friendly board (10). The depth of the grooves (11) can be adjusted as desired.

[0055] The eco-friendly board protrusion cutting step (S130) is a process of cutting the protrusion (12) protruding from one side of the eco-friendly board (10) through the eco-friendly board groove forming step (S120) as shown in Fig. 16 without piercing the groove (11). This process can be performed using an eco-friendly board protrusion cutting device (300).

[0056] The eco-friendly board surface printing step (S140) is a process of forming a printing layer (20) by printing the surface of an eco-friendly board (10) in which grooves (11) are formed, as shown in FIGS. 2 and 3. The eco-friendly board surface printing device (400) at this time may be a variety of industrial printers. In addition, the printing layer (20) may have various patterns, shapes, pictures, etc., and may have a variety of colorful colors. Therefore, when a decorative semi-perforated sound-absorbing board (1) in which a printing layer (20) is formed in this way is installed on, for example, an inner wall of a building, the original sound-absorbing function is provided as is, while, unlike in the past, it can express a variety of photo colors, thereby doubling the decorative effect of the wall, moving away from a plain wall.

[0057] Meanwhile, the decorative semi-perforated sound-absorbing board manufacturing system according to the present embodiment for manufacturing a decorative semi-perforated sound-absorbing board (1) as shown in FIG. 2 includes an eco-friendly board manufacturing device (100), an eco-friendly board groove forming device (200), an eco-friendly board protrusion cutting device (300), and an eco-friendly board surface printing device (400), as shown in FIG. 4. These devices (100 to 400) are automatically controlled by a system controller (600).

[0058] First, the eco-friendly board manufacturing device (100) serves to manufacture an eco-friendly board of the form shown in Fig. 13 (10).

[0059] This eco-friendly board manufacturing device (100) may include an eco-friendly raw material mixing unit (110), a raw material processing unit (120), a first cutting unit (130), a composite agent impregnation unit (140), a drying unit (150), a pressing unit (160), and a second cutting unit (170), as illustrated in detail in FIGS. 6 to 12. The eco-friendly raw material mixing unit (110), the raw material processing unit (120), the first cutting unit (130), the composite agent impregnation unit (140), the drying unit (150), the pressing unit (160), and the second cutting unit (170) form an inline process line that is automatically performed. Therefore, productivity is high.

[0060] An eco-friendly raw material mixing unit (110) that performs the eco-friendly raw material mixing step (S111) of FIG. 1 may include a mixing unit tank (111), an opening / closing shutter (112) that is provided to be openable and closable within the mixing unit tank (111), and a raw material mixer (116) that mixes raw materials introduced into the mixing unit tank (111).

[0061] The raw material mixer (116) plays a role in stirring the raw material, and the eco-friendly raw material mixing unit (110) additionally includes at least one raw material binder (117) for binding the raw material in addition to the raw material mixer (116).

[0062] The raw material binder (117) is arranged adjacent to the raw material mixer (116) and serves to mix the raw materials well while compacting them. This raw material binder (117) includes a binding shaft (117a) and a shaft up / down driver (117b) that is connected to the binding shaft (117a) and drives the binding shaft (117a) up / down. Since the raw materials can be compacted while the binding shaft (117a) is driven up / down by the action of the shaft up / down driver (117b), the mixed raw materials can be mixed well and compounded. A plurality of raw material binders (117) can be applied.

[0063] At this time, the eco-friendly raw materials used in the eco-friendly raw material mixing step (S111) may include LM fiber and PET. Of course, in addition to these raw materials, eco-friendly plant-based kenaf may also be included. The mixing ratio of these ingredients can be varied at any time. Of course, recycled polyurethane or polypropylene may also be added.

[0064] The tank (111) for the mixing unit is a structure in the shape of a barrel or hopper, and forms a place where the aforementioned raw materials are mixed. A discharge port (111a) is provided on one side of the tank (111) for the mixing unit so that the raw materials that have been mixed inside can be discharged to the outside of the tank (111) for the mixing unit. It is preferable that the discharge port (111a) be provided at the bottom of the tank (111) for the mixing unit, but the scope of the present invention is not limited to the shape of the drawing.

[0065] The opening shutter (112) is a structure that is rotatably arranged within the tank (111) for the mixing unit, and opens and closes the interior of the tank (111) for the mixing unit. That is, as in Fig. 11, the interior of the tank (111) for the mixing unit is shielded, or as in Fig. 12, the interior of the tank (111) for the mixing unit is opened.

[0066] In order to drive the opening / closing shutter (112) as described above, a shutter driving unit (113) is provided. That is, the shutter driving unit (113) is connected to the opening / closing shutter (112) and serves to drive the opening / closing shutter (112).

[0067] An open signal generator (114) is connected to the open shutter (112). The open signal generator (114) is connected to the open shutter (112) and serves to generate an open signal for the open shutter (112). The open signal generator (114) can be set to open the open shutter (112) through, for example, the operating time of the stirring motor (116a).

[0068] In this way, when the open signal generator (114) is applied, the controller (not shown) can control the operation of the shutter drive unit (113) based on the signal of the open signal generator (114). However, the open signal generator (114) is not necessarily applied to the eco-friendly raw material mixing unit (110), and instead of the open signal generator (114), a load cell or the like can be applied to open and close the open / close shutter (112) by detecting weight.

[0069] A raw material mixer (116) may be provided in the tank (111) for the mixing unit to ensure smooth mixing of raw materials introduced into the tank (111) for the mixing unit. That is, the raw material mixer (116) is provided in the tank (111) for the mixing unit and serves to mix raw materials introduced into the tank (111) for the mixing unit.

[0070] A raw material mixer (116) may include a stirring motor (116a), a stirring shaft (116b) connected to the stirring motor (116a) and arranged in a tank (111) for a mixing unit, and a plurality of stirring blades (116c) connected to the stirring shaft (116b) and coming into contact with the raw material when the stirring shaft (116b) rotates to stir the raw material. The plurality of stirring blades (116c) are arranged alternately on the stirring shaft (116b) so as to increase the efficiency of the stirring action.

[0071] Accordingly, when the stirring motor (116a) is operated and the stirring shaft (116b) rotates, a plurality of stirring blades (116c) connected to the stirring shaft (116b) rotate to break up the clumped raw materials or mix and stir the raw materials.

[0072] By the structure of the eco-friendly raw material mixing unit (110) as described above, the stirring process for the raw material in the mixing unit tank (111) can be performed through the raw material mixer (116) while the opening / closing shutter (112) is closed as shown in FIG. 11, and when the set stirring time is completed, the opening signal generator (114) transmits an opening signal to the controller so that the controller can control the operation of the shutter drive unit (113) based on the signal of the opening signal generator (114). Then, as shown in FIG. 12, when the opening / closing shutter (112) is opened, the raw material for which mixing is completed can be discharged through the discharge portion (111a) of the mixing unit tank (111).

[0073] Next, the raw material processing unit (120) is positioned after the process of the eco-friendly raw material mixing unit (110) and functions to process the mixed raw materials into a semi-finished product having a certain thickness by lumping them together. That is, in the case of the eco-friendly raw material mixing unit (110), since the raw materials are simply mixed together, the raw material processing unit (120) can be applied so that the mixed raw materials can be lumped together to form a structure having a certain thickness, i.e., a semi-finished product.

[0074] This raw material processing unit (120) may include a plurality of first to third processing rollers (121 to 123) that pressurize the raw material whose mixing is completed and discharged from the discharge portion (110a) of the eco-friendly raw material mixing unit (110) to form it into a semi-finished product of a certain thickness.

[0075] The first to third processing rollers (121 to 123) may be arranged in pairs, but the gap between each pair of the first to third processing rollers (121 to 123) may be gradually narrowed as they move from the eco-friendly raw material mixing unit (110) to the first cutting unit (130). In other words, the gap between each pair of the second processing rollers (122) is narrower than the gap between each pair of the first processing rollers (121), and the gap between each pair of the third processing rollers (123) is narrower than the gap between each pair of the second processing rollers (122).

[0076] Accordingly, raw materials that are simply mixed can be formed into a semi-finished product of a certain thickness by passing between the first to third processing rollers (121 to 123) according to the gap difference. For reference, although the first to third processing rollers (121 to 123) are disclosed in the drawing, the number of these may be two or four or more, and thus the scope of the present invention is not limited to the shape of the drawing.

[0077] The raw material processing unit (120) may include a plurality of needle punches (126). By pressing the semi-finished product with the plurality of needle punches (126), the materials forming the semi-finished product are well mixed again, thereby improving the quality of the board.

[0078] Next, the primary cutting unit (130) is positioned throughout the process of the composite impregnation unit (140) and serves to cut the semi-finished product formed by the raw material processing unit (120) into a size suitable for impregnation.

[0079] That is, when the raw material processing unit (120) processes a semi-finished product of a certain thickness, the processed semi-finished product may be continuously attached, and is cut into a size suitable for impregnation by the first cutting unit (130) so that subsequent impregnation processes, etc. can be efficiently performed.

[0080] This primary cutting unit (130) may include a first cutter (131) that cuts a semi-finished product while being driven up / down, and a first cutter up / down driving unit (132) that is connected to the first cutter (131) and drives the first cutter (131) up / down. Here, the first cutter up / down driving unit (132) may be a hydraulic, pneumatic, or hydraulic-pneumatic composite cylinder, but a device that is a combination of a motor and a ball screw may be applied instead of a cylinder.

[0081] A roller conveyor (135) is applied so that the semi-finished product can be cut well when the first cutter (131) is moved up / down by the first cutter up / down driving unit (132). That is, in the case of the present embodiment, the conveyor that transports the semi-finished product from below the first cutter (131) can be applied as a roller conveyor (135) to allow the operation of the first cutter (131). Therefore, the cutting operation can proceed well without interference.

[0082] A plurality of guide rollers (136) may be provided around the roller conveyor (135) to guide semi-finished products discharged through the raw material processing unit (120) to the roller conveyor (135).

[0083] Next, the composite impregnation unit (140) impregnates the semi-finished product cut into a size suitable for impregnation by the primary cutting unit (130) with a composite agent to impart flame retardant, (semi) flame retardant, dehumidifying, and adhesive functions. Therefore, the composite agent is a component that includes a flame retardant, a dehumidifying agent, and an adhesive. The component ratio thereof may be 1:1:1.

[0084] The composite impregnation unit (140) includes an impregnation unit table (141), a composite impregnation tank (142) provided on the impregnation unit table (141) and filled with a composite agent inside, a non-powered transport unit (143) that transports a semi-finished product to be flame-retardant but is immersed in the composite impregnation tank (142), and a power transport unit (144) that is rotatably arranged on top of the non-powered transport unit (143) and transports the semi-finished product to be flame-retardant together with the non-powered transport unit (143).

[0085] A loading roller (145) and an unloading roller (146) are provided at the front and rear ends of the non-powered conveying unit (143), respectively. The loading roller (145) serves to load the semi-finished product to be flame-retardant into the non-powered conveying unit (143), and the unloading roller (146) serves to remove the semi-finished product after flame-retardancy from the composite impregnation tank (142). Both the loading roller (145) and the unloading roller (146) may be powered rollers.

[0086] Accordingly, when the loading roller (145) is operated, the semi-finished product provided in the previous process can be loaded onto the non-powered conveying unit (143), and thereafter, the semi-finished product is conveyed while maintaining a state of being immersed in the composite material by the operation of the power conveying unit (143). In this process, the semi-finished product can be impregnated with the composite material, and when the impregnation is completed, the semi-finished product is taken out by the operation of the unloading roller (146).

[0087] Next, the drying unit (150) is positioned after the process of the composite impregnation unit (140) and serves to dry the semi-finished product that has completed impregnation. In other words, the drying unit (150) serves to dry the semi-finished product that has been wetted by the composite. Various types of dryers can be applied, but in the case of the present embodiment, a microwave-type drying unit (150) that allows the drying action to proceed by microwaves is applied.

[0088] When a microwave drying unit (150) is applied as in this embodiment, drying can proceed from the inside of the semi-finished product in which the composite agent has been absorbed, and rapid drying can be achieved without burning, thereby contributing to improved productivity.

[0089] Such a microwave drying unit (150) may include a dryer (151) and a microwave module (152).

[0090] A dryer (151) forms a location where drying of semi-finished products that have been impregnated is performed. This dryer (151) is equipped with a drying unit inlet (151a) into which semi-finished products that have been impregnated are introduced, and a drying unit discharge port (151b) from which semi-finished products that have been dried are discharged, and can be placed on a conveyor (156) through which semi-finished products are transported.

[0091] The drying unit inlet (151a) and the drying unit outlet (151b) are provided with dryer doors (153, 154) that open when the semi-finished product is being transported and close when the transport of the semi-finished product is stopped. Although the dryer doors (153, 154) are shown in a very schematic manner in the drawing, it is preferable that the dryer doors (153, 154) operate in a sealed manner so that the drying unit inlet (151a) and the drying unit outlet (151b) do not open while opening and closing the drying unit inlet (151a) and the drying unit outlet (151b).

[0092] A microwave module (152) is installed in the dryer (151) and functions to generate microwaves toward the semi-finished product. When microwaves are generated toward the semi-finished product through the microwave module (152), the semi-finished product can be dried quickly as heat is generated from within the semi-finished product due to the dielectric effect of the microwaves. The semi-finished product that has been completely dried can be made harder and more solid.

[0093] Next, the pressing unit (160) serves to press the semi-finished product without causing the surface of the semi-finished product to rise. This pressing unit (160) may include a heat pressing unit (161) and a cold pressing unit (163).

[0094] In the present embodiment, the compression unit (160) is implemented to include a heat compression unit (161) and a cooling compression unit (163), thereby improving the compression quality and thus the quality of the product. A conveyor (165) is provided between the heat compression unit (161) and the cooling compression unit (163) for moving semi-finished products between them.

[0095] The heat pressing unit (161) may include a pair of heat pressing rollers (161a) for heat pressing a semi-finished product, a first roller driving unit (161b) for driving the heat pressing rollers (161a) to adjust the gap between the heat pressing rollers (161a), and a heat supplier (161c) for supplying heat to the heat pressing rollers (161a). Heat is supplied to the heat pressing rollers (161a) by the heat supplier (161c), and then the gap between the heat pressing rollers (161a) is adjusted by the first roller driving unit (161b), whereby the semi-finished product passes between the heat pressing rollers (161a), thereby allowing a heat-induced heat pressing process to proceed.

[0096] The cold pressing unit (163) is positioned after the process of the heat pressing unit (161) and serves to cold press the semi-finished product that has undergone heat pressing. The cooling time by the cold pressing unit (163) may vary depending on the product.

[0097] This cold pressing unit (163) includes a pair of cold pressing rollers (163a) that cold press a semi-finished product that has undergone thermal pressing, a second roller driving unit (163b) that drives the cold pressing rollers (163a) to adjust the gap between the cold pressing rollers (163a), and a cold air supplier (163c) that supplies cold air to the cold pressing rollers (163a). Cold air is supplied to the cold pressing rollers (163a) by the cold air supplier (163c), and then the gap between the cold pressing rollers (163a) is adjusted by the second roller driving unit (163b), so that the semi-finished product that has undergone thermal pressing passes between the cold pressing rollers (163a), thereby allowing the cold pressing process using cold air to proceed.

[0098] Meanwhile, although the thermal compression unit (161) and the cold compression unit (163) are illustrated and described as roller types in the above description, they can also be applied as press types. Therefore, the scope of the present invention is not limited to the shapes of the drawings.

[0099] Lastly, the secondary cutting unit (170) performs secondary cutting to a set size to complete the manufacturing of an eco-friendly board (10) having the shape of FIG. 13.

[0100] This secondary cutting unit (170) has the same structure as the primary cutting unit (130) described above. That is, the secondary cutting unit (170) may include a second cutter (171) that cuts a semi-finished product while being driven up / down, and a second cutter up / down driving unit (172) that is connected to the second cutter (171) and drives the second cutter (131) up / down. Here, the second cutter up / down driving unit (172) may be a hydraulic, pneumatic, or hydraulic-pneumatic composite cylinder, but a device composed of a combination of a motor and a ball screw may be applied instead of the cylinder.

[0101] Next, the eco-friendly board home forming device (200) forms a post-process of the eco-friendly board manufacturing device (100), and is a process of forming a plurality of grooves (11) for sound absorption function in the eco-friendly board (10).

[0102] This eco-friendly board home forming device (200) may include a first loader (210) into which an eco-friendly board (10) is loaded, as shown in FIGS. 13 to 15, and a home processing unit (220) that forms a home (11) in the eco-friendly board (10) loaded into the first loader (210).

[0103] The first loader (210) allows the eco-friendly board (10) to be loaded without interfering with the processing of the home (11). Unlike the illustration, the first loader (210) may be capable of up / down.

[0104] The home processing unit (220) may include a plurality of punches (221) for processing a home (11) in an eco-friendly board (10), a punch head (222) for supporting the plurality of punches (221), and a head up / down driving unit (223) connected to the punch head (222) and driving the punch head (222) up / down. Accordingly, as shown in FIGS. 14 and 15, when the punch (221) is driven down by the action of the head up / down driving unit (223) and then moves up, a home (11) may be processed in the eco-friendly board (10).

[0105] Next, the eco-friendly board protrusion cutting device (300) forms a post-process of the eco-friendly board home forming device (200), and serves to cut the protrusion (12) protruding from one side of the eco-friendly board (10) by the action of the eco-friendly board home forming device (200).

[0106] This eco-friendly board protrusion cutting device (300) may include, as shown in FIG. 16, a second loader (310) into which an eco-friendly board (10) having protrusions (12) formed is loaded, and a protrusion cutting unit (320) that cuts the protrusions (12) protruding from one side of the eco-friendly board (10) loaded onto the second loader (310).

[0107] The second loader (310) enables the eco-friendly board (10) to be loaded so that it does not interfere with the cutting process of the protrusion (12). Unlike the illustration, the second loader (310) may be capable of going up / down.

[0108] The protrusion cutting unit (320) may include a rotary cutter (321) that cuts a protrusion (12) protruding from one side of an eco-friendly board (10) without piercing a groove (11), a cutter driver (322) that drives the rotary cutter (321), and a connecting part (323) that connects the rotary cutter (321) and the cutter driver (322). Accordingly, as the rotary cutter (321) rotates due to the action of the cutter driver (322), the protrusion (12) protruding from one side of the eco-friendly board (10) can be cut.

[0109] Of course, an eco-friendly board protrusion cutting device (300) can be used, but a groove (11) of a desired depth can also be formed on the eco-friendly board (10) using a groove processing unit (220). In this case, the use of an eco-friendly board protrusion cutting device (300) is not necessary, and all of these matters should be considered to fall within the scope of the present invention.

[0110] Next, the eco-friendly board surface printing device (400) forms a post-process of the eco-friendly board home forming device (300), and serves to print the surface of the eco-friendly board (10) on which the home (11) is formed to form a printing layer (20).

[0111] As described above, the eco-friendly board surface printing device (400) may be a variety of industrial printers. In addition, the printing layer (20) may have various patterns, shapes, pictures, etc., and may have a variety of colorful colors. Therefore, when a decorative semi-perforated sound-absorbing board (1) having a printing layer (20) formed in this way is installed on, for example, an inner wall of a building, the original sound-absorbing function is maintained while expressing a variety of photo colors, unlike in the past, thereby doubling the decorative effect of the wall, rather than a plain wall.

[0112] Meanwhile, the system controller (600) controls the operations of the eco-friendly board manufacturing device (100), the eco-friendly board home forming device (200), the eco-friendly board protrusion cutting device (300), and the eco-friendly board surface printing device (400) as an organic mechanism to form an inline automatic process line.

[0113] A system controller (600) that performs this role may include a central processing unit (610, CPU), a memory (620, MEMORY), and a support circuit (630, SUPPORT CIRCUIT).

[0114] In this embodiment, the central processing unit (610) may be one of various computer processors that can be applied industrially to organically control the operations of the eco-friendly board manufacturing device (100), the eco-friendly board groove forming device (200), the eco-friendly board protrusion cutting device (300), and the eco-friendly board surface printing device (400) to form an inline automatic process line, thereby forming an eco-friendly board manufacturing device (100), an eco-friendly board groove forming device (200), an eco-friendly board protrusion cutting device (300), and an eco-friendly board surface printing device (400).

[0115] The memory (620, MEMORY) is connected to the central processing unit (610). The memory (620) is a computer-readable recording medium that can be installed locally or remotely, and may be at least one readily available memory such as a random access memory (RAM), a ROM, a floppy disk, a hard disk, or any digital storage form.

[0116] The support circuit (630) is coupled with the central processing unit (610) to support typical operations of the processor. This support circuit (630) may include a cache, a power supply, a clock circuit, an input / output circuit, a subsystem, etc.

[0117] In this embodiment, the system controller (600) controls the operations of the eco-friendly board manufacturing device (100), the eco-friendly board groove forming device (200), the eco-friendly board protrusion cutting device (300), and the eco-friendly board surface printing device (400) as an organic mechanism to form an inline automatic process line, and a series of control processes, etc. can be stored in the memory (620). Typically, a software routine can be stored in the memory (620). The software routine can also be stored or executed by another central processing unit (not shown).

[0118] While the processes of the present invention have been described as being executed by software routines, at least some of the processes of the present invention can also be implemented by hardware. Thus, the processes of the present invention can be implemented as software running on a computer system, as hardware such as an integrated circuit, or as a combination of software and hardware.

[0119] Below, a series of processes for manufacturing a decorative semi-perforated sound-absorbing board (1) are described.

[0120] First, an environmentally friendly board (10, see Fig. 13) that is environmentally friendly and has a semi-combustible function is manufactured. That is, an environmentally friendly board (10) having the specifications shown in Fig. 13 can be manufactured using an environmentally friendly board manufacturing device (100).

[0121] Next, as shown in FIGS. 14 and 15, a plurality of grooves (11) for sound absorption are formed on an eco-friendly board (10). This process can be performed using an eco-friendly board groove forming device (200).

[0122] Next, as shown in Fig. 16, in the eco-friendly board home formation step (S120), the protrusion (12) protruding from one side of the eco-friendly board (10) is cut without perforating the home (11). This process can be performed using an eco-friendly board protrusion cutting device (300).

[0123] Then, as in Figs. 2 and 3, the surface of the eco-friendly board (10) having a groove (11) formed thereon is printed to form a printing layer (20). At this time, the eco-friendly board surface printing device (400) may be a variety of industrial printers. In addition, the printing layer (20) may have various patterns, shapes, pictures, etc., and may have a variety of colorful colors. Therefore, when the decorative semi-perforated sound-absorbing board (1) having the printing layer (20) formed in this way is installed on, for example, the inner wall of a building, the original sound-absorbing function is provided as is, while, unlike in the past, it can express a variety of photo colors, thereby doubling the decorative effect of the wall, moving away from a plain wall.

[0124] According to this embodiment, which operates with the structure described above, while still providing the original sound absorption function, it is possible to express a variety of photo colors, unlike in the past, thereby doubling the decorative effect of the wall, rather than leaving it as a plain wall.

[0125] FIG. 17 is a flowchart of a method for manufacturing a decorative semi-perforated sound-absorbing board according to another embodiment of the present invention, FIG. 18 is a front view of a decorative semi-perforated sound-absorbing board manufactured by the method for manufacturing a decorative semi-perforated sound-absorbing board of FIG. 17, FIG. 19 is a cross-sectional view taken along line BB of FIG. 18, FIG. 20 is a configuration diagram of a decorative semi-perforated sound-absorbing board manufacturing system according to another embodiment of the present invention, and FIG. 21 is a control block diagram of the system of FIG. 20.

[0126] Referring to these drawings, the method for manufacturing a decorative semi-perforated sound-absorbing board according to the present embodiment may include an eco-friendly board manufacturing step (S110), an eco-friendly board groove forming step (S120), an eco-friendly board protrusion cutting step (S130), an eco-friendly board surface printing step (S140), and an eco-friendly board surface coating treatment step (S150).

[0127] The configuration, function, and role of the eco-friendly board manufacturing step (S110), eco-friendly board home forming step (S120), eco-friendly board protrusion cutting step (S130), and eco-friendly board surface printing step (S140) are the same as those of the above-described embodiment. Therefore, redundant descriptions are omitted.

[0128] The eco-friendly board surface coating treatment step (S150) can be performed by an eco-friendly board surface coating treatment device (500), and is a process of forming a protective coating layer (22) by coating the area of ​​the printed layer (20) to protect the printed layer (20).

[0129] The protective coating layer (22) is provided to protect the printed layer (20), and thus can be formed transparently. Only after the eco-friendly board surface coating treatment step (S150) is performed is the decorative semi-perforated sound-absorbing board (1a) manufactured. The material forming the protective coating layer (22) at this time may include a material that makes the printed layer (20) more transparent, a material that prevents the printed layer (20) from rotting or becoming contaminated, a material that includes a water-repellent function, etc.

[0130] And, the decorative semi-perforated sound-absorbing board manufacturing system according to the present embodiment that performs these steps includes an eco-friendly board manufacturing device (100), an eco-friendly board groove forming device (200), an eco-friendly board protrusion cutting device (300), an eco-friendly board surface printing device (400), and an eco-friendly board surface coating treatment device (500). These devices (100 to 500) are automatically controlled by a system controller (600a).

[0131] The eco-friendly board surface coating treatment device (500) is a practical mechanical device that forms a protective coating layer (22) by coating the area of ​​the printed layer (20) to protect the printed layer (20). As mentioned above, the protective coating layer (22) is provided to protect the printed layer (20), and therefore must be formed transparently. Only when the operation of the eco-friendly board surface coating treatment device (500) is completed is the decorative semi-perforated sound-absorbing board (1a) manufactured.

[0132] Even if this embodiment is applied, the original sound absorption function is maintained, and unlike the conventional method, it can express a variety of photo colors, thereby doubling the decorative effect of the wall surface, breaking away from a plain wall.

[0133] FIG. 22a is a schematic perspective view of a decorative semi-perforated sound-absorbing board manufactured by a method for manufacturing a decorative semi-perforated sound-absorbing board according to another embodiment of the present invention, and FIG. 22b is a partial cross-sectional view of FIG. 22a.

[0134] Referring to these drawings, in the case of the decorative semi-perforated sound-absorbing board (1b) according to the present embodiment, a slanted corner portion (C) is formed along the outer perimeter. The angle of the slanted corner portion (C) can be adjusted as desired.

[0135] At this time, in the case of the decorative semi-perforated sound-absorbing board (1b) according to the present embodiment, a printed layer (20b) is formed not only on the outer surface but also on the inner wall of the groove (11). In this case, the three-dimensional decorative effect of the printed layer (20b) can be doubled.

[0136] And, a protective coating layer (22b) is formed on the printing layer (20b), and at this time, the protective coating layer (22b) is also formed on the printing layer (20b) up to the inner wall of the groove (11). Therefore, the printing layer (20b) can be completely protected.

[0137] And, in the case of this embodiment, the printing layer (20b) and the protective coating layer (22b) are formed on the inclined corner portion (C), which is the corner of the decorative semi-perforated sound-absorbing board (1b). In this case, when the decorative semi-perforated sound-absorbing board (1b) of Fig. 22a is connected and constructed laterally, the printed form extends to the inclined corner portion (C) forming the boundary area, so the three-dimensional printing decorative effect can be doubled. In other words, if the printing pattern is a picture, the picture can be formed continuously, which can enhance the interior value.

[0138] Even if this embodiment is applied, the original sound absorption function is maintained, and unlike the conventional method, it can express a variety of photo colors, thereby doubling the decorative effect of the wall surface, breaking away from a plain wall.

[0139] Fig. 23 is a flowchart of a method for manufacturing a decorative semi-perforated sound-absorbing board according to another embodiment of the present invention, and Fig. 24 is a schematic structural diagram of a decorative semi-perforated sound-absorbing board for explaining the method of Fig. 23.

[0140] Referring to Fig. 23, the method for manufacturing a decorative semi-perforated sound-absorbing board according to the present embodiment further includes a sound-absorbing board assembly forming step (S160) in addition to the manufacturing method of Fig. 17. This is a process for forming an assembly part (15) on the side of a decorative semi-perforated sound-absorbing board (1c, 1d). The assembly part (15) may have a rough structure. When such an assembly part (15) is formed on the side of a decorative semi-perforated sound-absorbing board (1c, 1d), the lateral construction work of the decorative semi-perforated sound-absorbing board (1c, 1d) can be more effective.

[0141] Even if this embodiment is applied, the original sound absorption function is maintained, and unlike the conventional method, it can express a variety of photo colors, thereby doubling the decorative effect of the wall surface, breaking away from a plain wall.

[0142] As such, the present invention is not limited to the described embodiments, and it will be apparent to those skilled in the art that various modifications and variations can be made without departing from the spirit and scope of the present invention. Accordingly, such modifications and variations should be considered to fall within the scope of the claims of the present invention.

[0143] The present invention can be used when constructing an interior wall of a building.

Claims

1. Eco-friendly board manufacturing step for manufacturing eco-friendly boards; An eco-friendly board groove forming step of forming a plurality of grooves for sound absorption function on the eco-friendly board; and A method for manufacturing a decorative semi-perforated sound-absorbing board, characterized in that it includes an eco-friendly board surface printing step of forming a printing layer by printing the surface of the eco-friendly board on which the above-mentioned grooves are formed.

2. In paragraph 1, The above eco-friendly board home formation step is: A method for manufacturing a decorative semi-perforated sound-absorbing board characterized in that a groove is formed in the eco-friendly board using a predetermined groove processing unit having a plurality of punches for processing grooves in the eco-friendly board, a punch head for supporting the plurality of punches, and a head up / down driving unit for driving the punch head up / down.

3. In paragraph 1, A method for manufacturing a decorative semi-perforated sound-absorbing board, characterized in that the plurality of grooves are arranged at equal intervals on the eco-friendly board.

4. In paragraph 1, Before performing the above eco-friendly board surface printing step, A method for manufacturing a decorative semi-perforated sound-absorbing board, characterized in that it further includes an eco-friendly board protrusion cutting step for cutting a protrusion protruding from one side of the eco-friendly board through the eco-friendly board groove forming step without perforating the groove using a predetermined protrusion cutting unit having a rotary cutter, a cutter driver for driving the rotary cutter, and a connecting portion connecting the rotary cutter and the cutter driver.

5. In paragraph 1, The above eco-friendly board manufacturing steps are: An eco-friendly raw material mixing step in which eco-friendly raw materials such as LM fiber and PET are mixed in a predetermined mixing ratio through an eco-friendly raw material mixing unit; A raw material processing step in which the mixed raw materials are lumped together using a raw material processing unit and processed into a semi-finished product with a certain thickness; A first cutting step of cutting the semi-finished product into a size suitable for impregnation using a first cutting unit; A composite impregnation step in which the first cut semi-finished product is impregnated with a composite agent through a composite agent impregnation unit containing a composite agent, a dehumidifier, and an adhesive; and A method for manufacturing a decorative semi-perforated sound-absorbing board, characterized in that it includes a drying step of drying an impregnated semi-finished product using a microwave drying unit.

6. In paragraph 5, The above eco-friendly board manufacturing steps are: A method for manufacturing a decorative semi-perforated sound-absorbing board, characterized in that after the drying step is performed, the method further includes a pressing step of pressing the semi-finished product through a pressing unit so that the outer surface of the semi-finished product does not rise.

7. In paragraph 6, The above eco-friendly board manufacturing steps are: A method for manufacturing a decorative semi-perforated sound-absorbing board, characterized in that it further includes a second cutting step of completing the manufacturing of the eco-friendly board by cutting it a second time to a predetermined size using a second cutting unit after the above pressing step.

8. In paragraph 1, After performing the above eco-friendly board surface printing step, A method for manufacturing a decorative semi-perforated sound-absorbing board, characterized in that it further includes an eco-friendly board surface coating treatment step of forming a protective coating layer by coating the printed layer area to protect the printed layer.

9. Eco-friendly board manufacturing step for manufacturing eco-friendly boards; and A method for manufacturing a decorative semi-perforated sound-absorbing board, characterized in that it includes an eco-friendly board surface printing step of forming a printing layer by printing the surface of the eco-friendly board.

10. Decorative semi-perforated sound-absorbing board manufactured by the manufacturing method of paragraph 1 or paragraph 9.

11. Eco-friendly board manufacturing device for manufacturing eco-friendly boards; An eco-friendly board groove forming device that forms a post-process of the above eco-friendly board manufacturing device and forms a plurality of grooves for sound absorption function in the eco-friendly board; and A decorative semi-perforated sound-absorbing board manufacturing system characterized by including an eco-friendly board surface printing device that forms a post-process of the eco-friendly board home forming device and forms a printing layer by printing the surface of the eco-friendly board on which the home is formed.

12. In paragraph 11, The above eco-friendly board manufacturing device is, An eco-friendly raw material mixing unit that mixes eco-friendly raw materials such as LM fiber and PET in a predetermined mixing ratio; A raw material processing unit that processes mixed raw materials into a semi-finished product with a certain thickness; A first cutting unit for first cutting the above semi-finished product into a size suitable for impregnation; A composite impregnation unit that impregnates the first cut semi-finished product with a composite containing a composite agent, a dehumidifier, and an adhesive; and A decorative semi-perforated sound-absorbing board manufacturing system characterized by including a drying unit that dries a semi-finished product that has been impregnated using a microwave method.

13. In paragraph 12, A decorative semi-perforated sound-absorbing board manufacturing system characterized in that the above eco-friendly board manufacturing device further includes a pressing unit that presses the semi-finished product so that the outer surface of the semi-finished product does not rise.

14. In paragraph 13, The above eco-friendly board manufacturing device further includes a second cutting unit that completes manufacturing of the eco-friendly board by performing a second cutting to a predetermined size. A decorative semi-perforated sound-absorbing board manufacturing system characterized in that the eco-friendly raw material mixing unit, the raw material processing unit, the first cutting unit, the composite agent impregnation unit, the drying unit, the pressing unit, and the second cutting unit form an inline process line and are automatically performed.

15. In paragraph 11, The above eco-friendly board home forming device is, A first loader into which the above eco-friendly board is loaded; and A home processing unit is included to form the home on the eco-friendly board loaded into the first loader, The above home processing unit, A plurality of punches for processing grooves in the above eco-friendly board; a punch head supporting the plurality of punches; and A decorative semi-perforated sound-absorbing board manufacturing system characterized by including a head up / down driving unit connected to the punch head and driving the punch head up / down.

16. In paragraph 15, A decorative semi-perforated sound-absorbing board manufacturing system characterized in that the plurality of grooves are arranged at equal intervals on the eco-friendly board.

17. In paragraph 11, A decorative semi-perforated sound-absorbing board manufacturing system characterized in that it forms a post-process of the above-mentioned eco-friendly board home forming device and further includes an eco-friendly board protrusion cutting device that cuts a protrusion protruding from one side of the eco-friendly board by the action of the above-mentioned eco-friendly board home forming device.

18. In paragraph 17, The above eco-friendly board protrusion cutting device is, A second loader into which the eco-friendly board having the above protrusions formed is loaded; and It includes a protrusion cutting unit that cuts a protrusion protruding from one side of the eco-friendly board loaded on the second loader, The above protrusion cutting unit, A rotary cutter that cuts the protrusion protruding from one side of the above-mentioned eco-friendly board without piercing the groove; a cutter driver for driving the above rotary cutter; and A decorative semi-perforated sound-absorbing board manufacturing system characterized by including a connecting part connecting the above-mentioned rotary cutter and the above-mentioned cutter driver.

19. In paragraph 17, A decorative semi-perforated sound-absorbing board manufacturing system characterized in that it further includes a system controller that organically controls the operations of the eco-friendly board manufacturing device, the eco-friendly board groove forming device, the eco-friendly board protrusion cutting device, and the eco-friendly board surface printing device to form an inline automatic process line, the eco-friendly board manufacturing device, the eco-friendly board groove forming device, the eco-friendly board protrusion cutting device, and the eco-friendly board surface printing device.

20. In paragraph 11, A decorative semi-perforated sound-absorbing board manufacturing system further comprising an eco-friendly board surface coating treatment device for forming a protective coating layer by coating the printed layer area to protect the printed layer.

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