JP2000296512A - Apparatus for preparing board for construction - Google Patents

Abstract

PROBLEM TO BE SOLVED: To efficiently produce a board for construction consisting of a base layer, a kneaded substance and a protective sheet. SOLUTION: An upper main roller 4 and a lower main roller 6 arranged so as to pinch a carrying path P for a base layer 2 and to place a gap up and down, carrying means 9, 10, 12 and 18 for carrying the base layer toward the gap, a paying-out roller 30 on which a protective sheet 32 is wound, a kneaded substance feeding means 20 for feeding a kneaded susbstance 22 to the surface of the base layer 2 on the upstream side of the upper main roller 4, and a pair of side plates 50 arranged in such a way that they pinch the carrying path P and are extended toward the upstream of the carrying path P from the arranging position of the upper main roller 4, are provided.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the manufacture of a building board comprising a laminate of a base layer, a kneaded substance adhered to the surface of the base layer, and a protective sheet adhered so as to cover the surface of the kneaded substance. Related to the device.

[0002]

2. Description of the Related Art As a style of interior or exterior of a building, it has recently been proposed to attach a building board having a decorative layer on the surface to a surface of a foundation. Such an architectural board generally includes a base layer having a rectangular plate shape, a decorative layer provided on the surface of the base layer, and a protective sheet disposed to cover the surface of the decorative layer. Then, by arranging the side edges of the building boards adjacent to each other and arranging them in parallel along the base, the walls whose surfaces are covered with the decorative layer can be formed much more easily than in the conventional plastering work. Protective sheet is not removed from the surface of the decorative layer at the time of construction and until after handing over to the hand of the user,
It is made to be laminated so as to cover it, and the surface of the decorative layer is protected from damage.

[0003]

Generally, the architectural board of the above-mentioned form has a decorative layer applied to the surface of a base layer, and then a paste is applied to one surface of the protective sheet, and the protective sheet is applied to the surface of the decorative layer. Is completed by detachably attaching the. The decorative layer is formed by solidifying the kneaded product of the curable composition adhered to the surface of the base layer by an appropriate method, for example, by leaving it in a required environment for a predetermined time. Therefore, it takes a relatively long time from when the kneaded material is attached to the surface of the base layer to when the decorative layer is formed,
Then, since the protective sheet is adhered thereafter, the production efficiency is poor and the production cost is high. Further, there has not yet been proposed a device for easily and surely and continuously forming a building board of the above-described form having a receding surface such as a chamfered surface on both side edges of the surface. Was about to be done.

[0004] The present invention has been made based on the above facts, and an object thereof is to provide a base layer, a kneaded material attached to the surface of the base layer, and a protective sheet adhered so as to cover the surface of the kneaded material. It is an object of the present invention to provide a new building board manufacturing apparatus capable of efficiently producing a building board made of a laminate of the above.

Another object of the present invention is to provide an architectural board comprising a laminate of a base layer, a kneaded material adhered to the surface of the base layer, and a protective sheet adhered so as to cover the surface of the kneaded material. It is an object of the present invention to provide a new building board manufacturing apparatus which can be efficiently produced at a relatively low cost by a relatively simple structure.

Still another object of the present invention is to provide an architectural board comprising a laminate of a base layer, a kneaded material adhered to the surface of the base layer, and a protective sheet adhered so as to cover the surface of the kneaded material. It is an object of the present invention to provide a new building board manufacturing apparatus which can be mass-produced continuously.

Still another object of the present invention is to provide an architectural board comprising a laminate of a base layer, a kneaded material attached to the surface of the base layer, and a protective sheet adhered so as to cover the surface of the kneaded material. It is an object of the present invention to provide a novel building board manufacturing apparatus capable of continuously manufacturing a kneaded material while reliably preventing the kneaded material from leaking from the surface of the base layer to the outside.

Still another object of the present invention is an architectural board comprising a laminate of a base layer, a kneaded material adhered to the surface of the base layer, and a protective sheet adhered so as to cover the surface of the kneaded material. Accordingly, it is an object of the present invention to provide a novel construction board manufacturing apparatus capable of easily and surely continuously producing a construction board having receding surfaces on both side edges of the surface.

Still another object of the present invention is to provide an architectural board comprising a laminate of a base layer, a kneaded material attached to the surface of the base layer, and a protective sheet adhered so as to cover the surface of the kneaded material. It is an object of the present invention to provide a new building board manufacturing apparatus capable of manufacturing a protective sheet without damaging it.

[0010] Other objects and features of the present invention will become apparent from the following description in which an embodiment of a building board manufacturing apparatus constructed according to the present invention is described in detail with reference to the accompanying drawings.

[0011]

According to the present invention, an upper main roller and a lower main roller which are disposed with a gap vertically above and below a transport path of a horizontally extending base layer, and the base layer includes Conveying means for conveying the upper and lower main rollers along the conveying path toward the gap, and an unwinding roller disposed downstream of the upper main roller and wound with a protective sheet laminated thereon, Kneaded material supply means for supplying a kneaded material of a slurry-like curable composition upstream of the upper main roller to the surface of the base layer transported to the gap between the upper and lower main rollers by the transport means The kneaded material supplied to the surface of the base layer is arranged so as to extend upstream from the arrangement position of the upper main roller with the conveyance path interposed therebetween so as not to leak in the width direction. And a pair of side plates, and the protective sheet unwound from the unwind roller. The surface of the base layer conveyed into the gap by the conveying means in a state of being wound around the upper main roller and being substantially inverted, one surface of the base layer is polymerized across the kneaded material and the upper surface is compressed and compressed. And by being transported together with the base layer by the lower main roller, the base layer, the kneaded material adhered to the surface of the base layer, and the protective sheet adhered so as to cover the surface of the kneaded material. An architectural board manufacturing apparatus, wherein an architectural board made of a laminate is formed.

[0012]

Preferred embodiments of the present invention will be described below in detail with reference to the accompanying drawings. In addition,
1 to 16, substantially the same parts are denoted by the same reference numerals.

FIG. 1 schematically shows a preferred embodiment of a building board manufacturing apparatus constructed according to the present invention. The base layer 2 which may be a rectangular plate is transported along a transport path P extending horizontally from right to left in FIG. 1 which is the transport direction. In the transport path P, an upper main roller 4 and a lower main roller 6 are disposed with a gap above and below the transport path P. In the transport path P, a plurality of freely rotating transport rollers 8 are disposed immediately downstream (the left side in FIG. 1) of the upper main roller 4 and the lower main roller 6, and directly upstream (the right side in FIG. 1). 2), a plurality of transport rollers 9 that are free to rotate are provided. Immediately upstream of the transport roller 9 in the transport path P, a pair of pressing rollers 10
It is arranged with a gap vertically above and below the transport path P. The gap between the pair of pressing rollers 10 is defined such that the pair of pressing rollers 10 substantially press-contact the front and back surfaces of the base layer 2 passing through the gap. With this configuration, in the process in which the base layer 2 passes between the pressing rollers 10, the variation in the thickness of the base layer 2 is corrected to be substantially uniform (the pressing rollers 10.
The gap between them is set in this way).

A pair of feed belt means 12 (FIG. 1) is located immediately upstream of the pair of pressing rollers 10 in the transport path P.
Are shown on one side only) at intervals in the width direction of the transport path P (the front-back direction in FIG. 1) with the transport path P interposed therebetween. Each of the feed belt means 12 is provided with a pair of pulleys 14 disposed to extend along the transport path P and spaced from each other in the transport direction of the base layer 2 of the transport path P.
And the endless feed belt 1 wound around the pulley 14
6 is provided. Immediately upstream of the pair of feed belt means 12, a plurality of transport rollers 18 are provided. An upper main roller 4, a lower main roller 6, transport rollers 8, 9 and 18,
Each shaft of the pair of pressing rollers 10 is arranged to extend horizontally (extending in the front and back direction in FIG. 1) perpendicular to the transport direction and parallel to each other. The axes of the twelve pulleys 14 are arranged to extend in the vertical direction in parallel with each other (extend in the vertical direction in FIG. 1). The transport roller 18, the pair of feed belt means 12, the pair of pressing rollers 10 and the transport roller 9 move the base layer 2 along the transport path P to the upper main roller 4.
And a transport means for transporting the paper toward the gap between the lower main rollers 6.

Each of the transport rollers 18 is driven to rotate counterclockwise in FIG. 1 by an electric motor M. That is, one of the transport rollers 18 is driven to rotate by the electric motor M, and the other transport rollers 18 are linked by a sprocket and a chain (not shown). The pair of feed belt means 12 is driven to rotate by the electric motor M. That is, the pulley 14 on one side, for example, the downstream side of the feed belt means 12 on the front side in FIG. 1 is driven to rotate counterclockwise as viewed from above in FIG. 1 by the electric motor M, and the feed belt 16 on one side is driven to rotate. Can be The pulley 14 on the downstream side of the feed belt means 12 on the other side (the back side in FIG. 1) is connected to the feed belt means 1 on one side by a sprocket and a chain (not shown).
2 (turned clockwise as viewed from above in FIG. 1), and the other side feed belt 16 is driven to rotate. The interval between the pair of feed belt means 12 is defined so as to press against the corresponding side surface of the base layer 2 passing through the interval. The pair of pressing rollers 10 are driven to rotate by the electric motor M. That is, the pressing roller 10 on one side, for example, the lower side is rotationally driven counterclockwise in FIG.
The other (upper) holding roller 10 is interlocked with the lower holding roller 10 via a gear mechanism (not shown) (rotated clockwise in FIG. 1).

The upper main roller 4 is rotated clockwise in FIG. 1 by an electric motor M, and the lower main roller 6 is
It is linked with the upper main roller 4 via a gear mechanism (not shown), and is rotated counterclockwise in FIG.
The upper main roller 4 and the lower main roller 6 are configured by applying chrome plating to the outer peripheral surface of a metal roller, in this embodiment, a steel roller. The pair of pressing rollers 10 are formed of steel rollers, and the transport rollers 8, 9 and 18 are formed by applying zinc plating to the outer peripheral surfaces of the steel rollers. The belts 16 of the pair of feed belt means 12 are made of, for example, synthetic rubber or a laminate of a polyester resin and a polyurethane resin.

On the surface of the base layer 2 conveyed into the gap between the upper main roller 4 and the lower main roller 6 by the conveying means, the slurry-like curable composition is kneaded on the upstream side of the upper main roller 4 in the conveying path P. A kneaded material supply means 20 for supplying the material 22 is provided. The kneaded material supply means 20 includes a tank 23 in which the kneaded material 22 is stored, one kneaded material supply pipe 24 that forms kneaded material supply pipe means for supplying (discharging) the kneaded material 22 in the tank 23, The tank 2 is disposed at the bottom having a substantially V-shaped cross section in the tank 23.
3 includes a screw feeder 25 for feeding the kneaded material 22 in the pipe 24 into a pipe 24 and a flow control valve 26 for adjusting the flow rate of the kneaded material 22 in the pipe 24. The flow control valve 2 which itself may use a well-known configuration
The opening 6 can be appropriately adjusted manually or automatically. The screw feeder 25 is rotated by the electric motor M. A discharge opening 24 described later of the pipe 24
The discharge amount of the kneaded material 22 from a is controlled according to the feed speed of the base layer 2 (the peripheral speed of the upper main roller 4 and the lower main roller 6) and the thickness of the kneaded material 22 to be attached to the surface of the base layer 2. .

Referring to FIGS. 2 and 3 together with FIG. 1, a stationary frame 28 is disposed at a position immediately upstream of the position where the upper main roller 4 and the lower main roller 6 are disposed on the transport path P. I have. The stationary frame body 28 includes a pair of vertical frames 28a that stand upright with the transport path P interposed therebetween, and a horizontal frame 28b that extends horizontally between upper ends of the vertical frames 28a. A portion near the downstream end of the pipe 24 is detachably attached to a central portion in the longitudinal direction of the horizontal frame 28b by an appropriate clamp means (not shown). Thereby, the pipe 24 is positioned so as to extend vertically at the center in the width direction of the transport path P. The downstream end of the pipe 24 defines one discharge opening 24a.
The pipe 24 having a circular cross section can be formed from an appropriate metal or synthetic resin. The discharge opening 24a is
It is formed so as to be inclined downward from the upstream to the downstream of the transport path P, and is disposed at the center in the width direction of the transport path P.
The discharge opening 24a is also positioned at a distance above the surface of the base layer 2 conveyed to the gap between the upper main roller 4 and the lower main roller 6 by the above-described conveying means and is directed toward the surface as described later. The kneaded material 22 can be discharged.

Referring to FIG. 1, reference numeral 30 denotes an unwinding roller on which a protective sheet 32 is laminated and wound. The unwinding roller 30 is disposed on the downstream side of the transport path P of the upper main roller 4 and above the upper main roller 4. The unwinding roller 30 includes a braking means having a variable braking force, specifically, a powder brake B (not shown) which may use a configuration known per se. The powder brake B includes a rotating shaft supported by the housing, a cylindrical rotating body fixed to the rotating shaft, a fixed body disposed inside the cylindrical portion of the rotating body, and an opening in the cylindrical portion of the rotating body. A plate member fixed to the rotating body so as to close the side; and an exciting coil disposed in the housing so as to surround the outer periphery of the cylindrical portion of the rotating body. A powder gap is provided between the outer peripheral surface of the fixed body and the inner peripheral surface of the cylindrical portion of the rotating body, and the powder gap is filled with powder (magnetic iron powder). When the excitation coil is energized, a coupling force is generated in the powder, and a braking force acts on the rotating body. This braking force is appropriately controlled by changing the magnitude of the current to the exciting coil. The rotation shaft of the powder brake B is integrally connected to a rotation shaft (not shown) of the unwind roller 30. Powder brake B
Preferred examples include, for example, model names ZKB-0.3 and 0.6YN manufactured or sold by Mitsubishi Electric Corporation, or model names ZKB-1.2 to 20XN.

Between the unwinding roller 30 and the upper main roller 4, four rollers 33, 34, 35, and 36, which are free to rotate, are mutually connected in the above order from the downstream to the upstream of the transport path P. They are arranged at intervals. Rollers 33 and 3
5, the roller 34 between the rollers 33 and 35 is disposed at a position higher than them, and the roller 36 is disposed at a position lower than the roller 36. Protective sheet 32 unwound from unwind roller 30
Is wound around a part of the outer peripheral surface of each of the rollers 33, 34, 35 and 36, is wound around the upper main roller 4, and is substantially reversed, toward the downstream of the transport path P. It is positioned to extend. The roller 36 is composed of an expander roll, and prevents the protection sheet 32 from wrinkling. The roller 34 is provided with a pressure sensor S which is a tension detecting means for detecting the tension of the protection sheet 32. By forming the roller 34 from a so-called pick-up roll, the pressure sensor S is incorporated in the bearing of the roller 34, and the pressure acting on the bearing of the roller 34 is detected to detect the tension of the protection sheet 32. The intensity of the current to the exciting coil of the powder brake B is controlled based on the detection signal from the pressure sensor S, and the braking force of the powder brake B is controlled. Thereby, the tension of the protection sheet 32 is controlled to a predetermined tension, and the protection sheet 32 can be smoothly unwound from the unwinding roller 30 without being loosened or deformed or broken.

A pair of side plates 50 are connected to a frame 5 to be described later so that the kneaded material 22 supplied to the surface of the base layer 2 by the kneaded material supply means 20 does not leak in the width direction of the transport path P.
9. The pair of side plates 50 extend from the disposition position of the upper main roller 4 and the lower main roller 6 toward the upstream of the transport path P at intervals in the width direction of the transport path P across the transport path P of the base layer 2. It is arranged to be. As will be described later, the side plate 50 is formed so that the kneaded material 22 adhered to one surface of the protective sheet 32 compressed between the upper main roller 4 and the surface of the base layer 2 does not leak in the width direction of the transport path P. Each part is brought into close contact with a part of the upper main roller 4. This configuration will be described more specifically. Since the side plates 50 have substantially the same configuration, the configuration of one side plate 50 will be described.

Referring to FIGS. 4 to 7 together with FIGS.
In this embodiment, the width of the protective sheet 32 is
, The axial length of the upper main roller 4 is defined to be longer than the width of the base layer 2, and the axial length of the lower main roller 6 is specified to be shorter than the width of the base layer 2. Have been. In this embodiment, the base layer 2 is made of a commercially available gypsum board, and as shown in FIG. 3, a core 200a formed by kneading and shaping a small amount of inorganic fine aggregate and water into a raw material gypsum. And cardboard 200b covering both the front and back surfaces and both side surfaces (left and right sides in FIG. 3) of the core 200a. One end face (one end face in the left-right direction in FIG. 1) and the other end face (the other end face in the left-right direction in FIG. 1) of the core 200a are exposed without being covered with the cardboard 200b. A chamfered surface 2a formed of a flat inclined surface is formed between both side edges (left and right side edges in FIG. 3) of the surface of the base layer 2 and the corresponding side surfaces. Each of the chamfered surfaces 2a, which are receding surfaces receding to the back surface side with respect to the front surface, is formed of a constant inclined surface extending linearly when viewed from the longitudinal direction of the side plate 50. Each of the chamfered surfaces 2a also has a constant width substantially the same as the corresponding side surface (side edge) of the base layer 2 when viewed from a plane, as shown in FIG. It is formed so as to extend from one end to the other end along a corresponding side surface in parallel with the side surface. The width of the protective sheet 32 is defined to be substantially the same as the width between the boundaries between the flat surface of the base layer 2 and each of the chamfered surfaces 2a (substantially linear when viewed from the top surface of the base layer 2).
Therefore, the width of the protective sheet 32 is defined as the width of the base layer 2 minus the length corresponding to each width of the chamfered surface 2a when the base layer 2 is viewed from a plane.

The side plate 50, which can be made of a metal such as stainless steel, preferably a synthetic resin such as ultrahigh molecular weight polyethylene (U HMWPE), polypropylene, polyvinyl chloride, or Teflon (trade name), has a substantially rectangular shape. However, one upper end surface in the longitudinal direction positioned on the downstream side of the transport path P has an arc surface 52 substantially coinciding with a part of the outer peripheral surface of the upper main roller 4, and is slightly horizontal from the lower end of the arc surface 52. And a horizontal surface 53 extending in the horizontal direction. An inclined surface 54 is formed on one surface of the side plate 50 on the side facing the other side plate 50 in the other longitudinal direction positioned on the upstream side of the transport path P. The inclined surface 54 is
As going from the downstream side to the upstream side, one surface (the front surface in FIG. 4, the lower surface in FIG. 5, the left surface in FIG. 6) becomes the other surface (the back surface in FIG. 4, the upper surface in FIG. 6 (the right side in FIG. 6) and extend from the upper end to the other end. One side of the side plate 50 further includes an inner vertical surface 55 and an inner vertical surface 5 that are in close contact with corresponding side surfaces of the base layer 2.
5 includes an overhang portion 56 formed of a flat inclined surface extending upward from the upper end toward the inside, and another inner vertical surface 58 extending upward from the inner end of the overhang portion 56. The overhang portion 56 extends straight from one end in the longitudinal direction toward the other at a constant height from the lower end of the side plate 50, and has a constant inclined surface extending linearly as described above when viewed from the longitudinal direction. Since the other surface of the side plate 50 is substantially flat, the upper side of the side plate 50 is thicker than the lower side with the overhang portion 56 as a boundary. The upper end of the overhang portion 56 is positioned so as to coincide with the lower end of the arc surface 52 of the side plate 50 and the horizontal surface 53.

In the state where the pair of side plates 50 configured as described above are arranged with the transport path P of the base layer 2 interposed therebetween, each of the arc surfaces 52 extends from the lower end of the outer peripheral surface of the upper main roller 4 to the transport path. It is brought into close contact with a partial area extending toward the upstream side of P. The distance between the side plates 50 is defined such that the inner vertical surface 55 of the inner surfaces facing each other can be brought into close contact with the corresponding side surface of the base layer 2 to be conveyed. Furthermore,
Each of the overhang portions 56 is in close contact with the corresponding side surface of the base layer 2 on which each of the inner vertical surfaces 55 is conveyed,
It is positioned so that a gap is formed above the corresponding side edge of the surface of the base layer 2. As described above, since the chamfered surfaces 2 a are formed on both side edges of the surface of the base layer 2, each of the overhang portions 56 is in close contact with the corresponding side surface of the base layer 2 on which each of the inner vertical surfaces 55 is conveyed. In this state, it is positioned so that a gap is formed above the corresponding chamfered surface 2a (see FIG. 7). In addition, since each of the overhang portions 56 is formed on an inclined surface that can be aligned with the chamfered surface 2a of the base layer 2, in the above state shown in FIG. It is positioned substantially vertically above 2a and spaced apart in parallel and facing each other. In this state, the side plate 50
Are positioned so that the other inner vertical surface 58 in each of the above and the boundary between the surface of the base layer 2 and the chamfered surface 2a substantially coincide with each other when viewed from the vertical direction.

Referring to FIGS. 2 and 3, each side plate 50 is provided on a frame means 59 provided on a corresponding side of the transport path P, and is a compression coil spring 60 serving as an urging means. Are biased in a direction approaching each other. A plurality of support plate members 62 are fixed to the other outer surface of each side plate 50, and two support rod members 64 are provided on the outer support plate member 62 at intervals in the transport direction of the base layer 2. Fixed. Each of the support rod members 64 is provided with a support hole 66 provided in the corresponding frame means 59.
Is slidably supported via a bush 68. A through hole 69 is formed in each of the frame means 59, and a screw rod 70 having a male screw portion is inserted into each of the through holes 69 so as to be relatively movable. Both ends of each male screw portion of the screw rod 70 protrude from both ends of the corresponding through hole 69, and the protruding male screw portion has a lock nut 7.
2 are engaged, whereby each of the threaded rods 70 is fixed to the corresponding frame means 59 so that the axial position thereof can be adjusted.

At one end in the axial direction of the screw rod 70 (one end on the side facing the corresponding side plate 50), a cap member 74 having one end opened is formed with a through hole formed at the bottom of the cap member 74. The holes are fitted so that they are slidably supported. A stopper 75 having a larger diameter than the through hole of the cap member 74 is provided at one axial end of each of the screw rods 70.
The movement to the one end side is prevented. Cap member 74
Another cap member 76 is screw-engaged with the outer peripheral surface on the open end side of each. In each of the other cap members 76, a female screw portion formed on the inner peripheral surface on the open end side of each of the cap members 76 is engaged with a male screw portion formed on the outer peripheral surface on the open end side of the corresponding cap member 74. By being combined, it is engaged with the corresponding cap member 74. Each of the other cap members 76 is fixed to the support plate member 62 outside the corresponding side plate 50 via a bottom having a through hole. Each of the compression coil springs 60 is interposed between the corresponding stopper 75 of the threaded rod 70 and the outer support plate member 62 exposed through a through hole at the bottom of the other cap member 76. . Side plate 5
Each of the zeros is biased toward each other by a corresponding compression coil spring 60. Base layer 2 between each side plate 50
The position of each of the side plates 50 in a state where is not conveyed is
The position of each stopper 75 is defined by a corresponding stopper 75 of the corresponding screw rod 70.
0 is defined by the fixed position with respect to the frame means 59.

The base layer 2 in the building board is made of a suitable material widely used as a base material in a building, for example, gypsum board, calcium silicate board, asbestos cement calcium silicate board, wood plywood, steel plate, wood wool cement. It can be formed from a board, a hollow cement board, a foam cement board, a concrete board, a mortar board and the like. In particular, it is preferable to form the base layer 2 from a breathable board such as a gypsum board, a calcium silicate board, an asbestos cement calcium silicate board, or a wood plywood. Such a breathable board can be used as the base layer 2 as it is in a commercially available form. The base layer 2 in this embodiment is composed of the gypsum board as described above.

The slurry-like kneaded material 22 that forms the decorative layer by being solidified can be formed by kneading the curable composition and water. The curable composition used for forming the kneaded material 22 is preferably an inorganic curable composition which is solidified by an appropriate method.
Inorganic curable compositions preferably used include those obtained by adding appropriate additives to curable compounds such as calcium hydroxide, calcium sulfate, and magnesium oxide, particularly, plastered slaked lime, plaster, and water such as dolomite plaster. Curable compositions containing calcium oxide as a main component, in particular, those obtained by adding an aqueous emulsion to calcium hydroxide can be used. Further, if necessary, short fibers, inorganic fine aggregates, fine particles, thickeners, fluidizers, defoamers and the like can be added. Plaster is used as the curable composition of the kneaded material 22 shown in FIGS.

As the protective sheet 32, a porous sheet having a non-uniform air permeability is preferable, and preferable examples thereof include a fiber sheet made of a synthetic resin such as polypropylene, polyethylene, polyester, etc. Examples thereof include water-resistant paper having unevenness, and a microporous resin sheet in which air permeability unevenness is generated by a method such as heat fusion. Among them, a preferable example of the nonwoven fabric is “Tyvek 1059B” manufactured by Asahi DuPont Flashpan Products Co., Ltd.
(Product name). As a preferred example of the microporous resin sheet, NF sheet: "NF sheet NG" (trade name) manufactured by Tokuyama Corporation can be exemplified. Note that a microporous resin sheet is used as the protection sheet 32 in this embodiment.

Referring mainly to FIG. 1, the operation of the above-described building board manufacturing apparatus will be described. Although not shown, first, the first base layer 2 is inserted into the gap between the upper main roller 4 and the lower main roller 6, and the leading end is positioned downstream of each of the rollers 4 and 6. When the tip of the base layer 2 is inserted between each of the side plates 50 from the upstream side, each of the inclined surfaces 54 located inside the upstream end of the side plate 50 functions as a guide, so that smooth insertion is performed. This guiding action is
Of course, this is also performed when the base layer 2 is continuously transported. Each inner vertical surface 55 of the side plate 50 is pressed (closely contacted) with a predetermined pressure by a compression coil spring 60 corresponding to a corresponding side surface of the base layer 2. Furthermore, as described above, each overhang portion 56 of the side plate 50 is positioned with a gap above the chamfered surface 2a, which is a corresponding side edge of the surface of the base layer 2 (see FIG. 7). Continuous belt-shaped protection sheet 32 unwound from unwind roller 30
Is wound around the upper main roller 4 via the rollers 33, 34, 35 and 36, and is substantially reversed so as to pass through the gap between the upper main roller 4 and the surface of the first base layer 2 so that the protective sheet 32 Is fixed to the tip of the base layer 2 by, for example, an adhesive tape.

As long as the powder brake B is turned on, a predetermined amount of current is supplied to the powder brake B to apply a predetermined braking force to the unwinding roller 30, and if the protection sheet 32 is not subjected to a predetermined tension or more, The unwind roller 30 is prevented from rotating. Next, the flow control valve 26 is opened at a predetermined opening degree,
By rotating the screw feeder 25 of the kneaded material supply means 20, the kneaded material 22 of the slurry-like curable composition is discharged from the discharge opening 24a at the downstream end of the pipe 24. First first base layer 2
To the surface. Since the discharge opening 24a is arranged at the center in the width direction of the transport path P, the kneaded material 22 is supplied to the center of the surface of the base layer 2 in the width direction immediately upstream of the upper main roller 4. In addition, the outer peripheral surface of the upper main roller 4 and the side plate 5 are disposed on the surface of the base layer 2 immediately upstream of the upper main roller 4.
With each of the zeros, a stagnant portion of the kneaded material 22 substantially closed on three sides except the upstream side is formed, so that the kneaded material 22 is diffused over the entire area in the width direction of the surface.

After a predetermined amount of the kneaded material 22 is supplied to the center of the surface of the first base layer 2 in the width direction, each electric motor M
Is turned ON, the upper main roller 4 and the lower main roller 6 are driven to rotate, and at the same time, the pair of pressing rollers 10, the pair of feed belt means 12, and the conveying roller 18 are driven to rotate. By the rotation of the upper main roller 4 and the lower main roller 6, the first base layer 2 positioned between the upper main roller 4 and the lower main roller 6 is positioned immediately upstream of the upper main roller 4. The kneaded material 22 is conveyed in the downstream direction along the conveyance path P in a state where the kneaded material 22 is adhered to the entire surface in the width direction of the surface. At the same time, a predetermined or more tension acts on the protection sheet 32, and the protection sheet 32 is unwound from the unwind roller 30 overcoming the braking force of the powder brake B. Protective sheet 32 unwound from unwind roller 30
The kneaded material 22 has one surface on the surface of the first base layer 2 in a state of being wound around the upper main roller 4 and substantially inverted.
Is conveyed together with the base layer 2 by the upper main roller 4 and the lower main roller 6 while being polymerized and compressed. 1 above
Following the second base layer 2, the second base layer, the third base layer, and so on
Are continuously conveyed by the conveying means in a state where the rear end face and the front end face adjacent to each other are in close contact with each other. The kneaded material 22 and the protective sheet 32 laminated on the surface of the base layer 2 are separated from the adjacent base layer 2 in a cutting area (not shown) provided downstream of the upper main roller 4 and the lower main roller 6. In the above, cutting is performed by moving a cutter (not shown) in the width direction of the base layer 2. In this way, building boards each formed of a rectangular plate-like laminate in which the base layer 2, the kneaded material 22, and the protective sheet 32 are sequentially laminated are formed one after another.
The kneaded material 22 forms a decorative layer by being solidified.

The gap between the upper main roller 4 and the lower main roller 6 is
It is defined that the kneaded material 22 is pressure-bonded to the surface of the base layer 2 via the protective sheet 32. By the above-described compression by the upper main roller 4 and the lower main roller 6, the kneaded material 22 is relatively thickly and uniformly attached to the surface of the base layer 2 without unevenness. As shown in FIG. 1, the outer peripheral surface of the upper main roller 4 is formed on the upstream side of the press-contact portion pressed against the surface of the base layer 2 via the protective sheet 32. Since the object 22 is retained in a wedge shape, the base layer 2
The kneaded material 22 discharged to the surface of the surface is effectively diffused over the entire area in the width direction of the surface, and the kneaded material 22 is
It is uniformly adhered to the whole area including each of the chamfered surfaces 2a. Further, since the pressure is increased in accordance with an increase in the peripheral speed of the upper main roller 4, the adhesion of the kneaded material 22 is improved. As can be easily understood from the above description, the gap between the upper main roller 4 and the lower main roller 6 defines a lamination area.

As described above, the chamfered surfaces 2a, which are inclined surfaces, are formed on both side edges in the width direction of the surface of the base layer 2, and each of the overhang portions 56 formed of the inclined surfaces corresponds to the corresponding chamfered surface 2a. Are positioned so as to form a gap above. As shown in FIG. 7, the width of the protective sheet 32 is defined so as to cover substantially the entire flat surface excluding each of the chamfered surfaces 2a via the kneaded material 22. The kneaded material 22 is compressed in the gap between the upper main roller 4 and the lower main roller 6 and tends to leak in the width direction of the base layer 2.
Compression spring 60
Is pressed against the corresponding side surface of the base layer 2 by
The arcuate surface 52 is brought into close contact with the above-mentioned region of the outer peripheral surface of the upper main roller 4, and the overhang portion 56 formed of an inclined surface is a chamfered surface 2 which is a corresponding side edge of the surface of the base layer 2.
This is reliably prevented by being positioned so that a gap is formed above a. Chamfered surface 2a of base layer 2
And the gap formed by each of the overhang portions 56 positioned above each is compressed and filled with the kneaded material 22, so that the width direction of the upper surface of the kneaded material 22 pressed against the surface of the base layer 2 Corresponding chamfered surfaces 2 on both sides
An inclined surface along a is formed.

There is also an embodiment in which the chamfered surface 2a as described above is not formed at both side edges in the width direction of the surface of the base layer 2, that is, formed at a right angle (see FIG. 8). In the embodiment shown in FIG. 8, the inclined surface forming each overhang portion 56 of the side plate 50 is defined to be smaller in both height and width than the overhang portion 56 shown in FIG. Each of such overhang portions 56 is attached to a corresponding side edge (in this case, a flat surface) of the surface of the base layer 2 in a state where each of the inner vertical surfaces 55 is in close contact with the corresponding side surface of the base layer 2. On the other hand, it is positioned so that a gap is formed above (see FIG. 8). Also in the embodiment shown in FIG. 8, for the same reason as above, leakage of the kneaded material 22 is reliably prevented. In addition, due to the presence of the overhang portion 56, the overhang portion is formed on both sides in the width direction of the upper surface of the kneaded material 22 that is pressed against the surface of the base layer 2, even though the both sides in the width direction of the surface of the base layer 2 are perpendicular. An inclined surface corresponding to the inclined surface of the portion 56 is formed. As a result, the base layer 2
It is possible to form inclined surfaces (chamfered surfaces) on both widthwise side edges of the upper surface of the kneaded material 22 without forming the chamfered surfaces 2a on both side edges in the width direction of the surface. As is apparent from the above description, the overhang portion 5 is provided inside each of the side plates 50.
6 is formed, and the kneaded material 22 is compressed and filled between each of the lower surfaces thereof and the corresponding surface (chamfered surface 2a or flat surface) of the base layer 2 so that the kneaded material 22 is pressed against the surface of the base layer 2 Since both edges in the width direction of the kneaded material 22 are suppressed, leakage of the kneaded material 22 is reliably prevented, and the inclined surfaces (chamfered surfaces) of both side edges are favorably formed.

In the case where the chamfered surfaces 2a as described above are formed on both side edges of the surface of the base layer 2 in the width direction, each of the overhang portions 56 is formed such that each of the inner vertical surfaces 55 is formed of the base layer 2.
In some embodiments, the base layer 2 is positioned so as to be in close contact with the corresponding chamfered surface 2a of the base layer 2 while being in close contact with the corresponding side surface (see FIG. 9). In this embodiment, the kneaded material 22 is adhered on a flat surface of the base layer 2 excluding each of the chamfered surfaces 2a, and the protective sheet 32 is adhered to the surface of the kneaded material 22. Therefore, the architectural board is manufactured in a state where each of the chamfered surfaces 2a is exposed without applying a decorative layer.

As shown in FIG. 10, there is also an embodiment in which the overhang portion 56 is not formed on the side plate 50 as described above.
In this embodiment, the one surface of the side plate 50 is constituted by an inner vertical surface 55 and an inclined surface 54 (see FIG. 5). Both side edges in the width direction of the surface of the base layer 2 are formed at right angles as shown in FIG. The width of the protection sheet 32 is defined to be substantially the same as the width of the base layer 2. The kneaded material 22 is attached to the entire flat upper surface of the base layer 2, and the entire flat surface of the kneaded material 22 is covered with the protective sheet 32. In the embodiment shown in FIG. 10, since the overhang portion 56 as described above is not formed on the side plate 50, there is a concern that the kneaded material 22 may leak. By appropriately setting the pressing force between the roller 4 and the lower main roller 6 against the base layer 2, the pressing force against the side surface of the side plate 50 of the side plate 50, the transport speed of the base layer 2, etc. It is possible to suppress it. In the embodiment of FIG. 9 described above, the kneaded material 22 is not compressed and filled between the lower surface of the overhang portion 56 and the corresponding surface of the base layer 2 (chamfer surface 2a).
Although the leakage of the kneaded material 22 is the same as in the embodiment shown in FIG. 10, it can be sufficiently suppressed to a practically acceptable level for the same reason as described above.

The upper main roller 4 and the lower main roller 6 are driven to rotate at the same peripheral speed. Specifically, the peripheral speed (S1) of the upper main roller 4 and the lower main roller 6 is m / min (minute).
Is defined to be 5.0 m to 15.0 m / min.
The transport roller 18 is driven to rotate at the same peripheral speed as each other and at the same peripheral speed (S1) m / min as the upper main roller 4 and the lower main roller 6, and the pair of pressing rollers 10 and the pair of feed belt means 12 are mutually rotated. At the same peripheral speed and the upper main roller 4,
Peripheral speed (S1) of lower main roller 6 and transport roller 18 m / m
It is driven to rotate at a peripheral speed (S2) m / min slightly faster than in. Specifically, the peripheral speed (S2) of the pair of pressing rollers 10 and the pair of feed belt means 12 is m / min.
Is a peripheral speed (S2) m / min that is 0.3 m / min faster than the peripheral speed (S1) m / min of the upper main roller 4, the lower main roller 6, and the transport roller 18, that is, 5.3 m to 15.m.
It is regulated at 3 m / min. The base layer 2 conveyed by the conveying rollers 18 at the peripheral speed (S1) m / min reaches the pair of feed belt means 12 and the pair of pressing rollers 10, and increases the peripheral speed to (S1) m / min + 0.3 m / min. Then, the sheet is conveyed toward the gap between the upper main roller 4 and the lower main roller 6. These differences in peripheral speed are easily absorbed by slippage between the transport roller 18 and the back surface of the base layer 2.

As described above, the base layer 2 conveyed to the gap between the upper main roller 4 and the lower main roller 6 is pressed against the surface by the upper main roller 4 and the lower main roller 6 while the kneaded material 22 and the protective sheet 32 are pressed against each other. Laminated and peripheral speed (S1) m / mi
n is conveyed at a reduced speed. Subsequent to the base layer 2 compressed and conveyed by the upper main roller 4 and the lower main roller 6, the sheet is conveyed from behind by a pair of pressing rollers 10 and a pair of feed belt means 12 at a peripheral speed (S1) m / min + 0.3 m / min. The front end of the subsequent base layer 2 is continuously pressed against the rear end of the front base layer 2 conveyed at a lower peripheral speed (S1) m / min, so that the upper main roller 4 and the lower main roller 6 Immediately upstream, the sheet is transported without any gap between the rear end of the front base layer 2 and the front end of the subsequent base layer 2.
As a result, the kneaded material 22 is reliably prevented from leaking from between the rear end of the front base layer 2 and the front end of the subsequent base layer 2. Peripheral speed (S1) of upper main roller 4 and lower main roller 6 m /
min and the peripheral speed (S1) of the pair of pressing rollers 10 and the pair of feed belt means 12 m / min + 0.3 m / min
Is easily absorbed by slip between the pair of pressing rollers 10 and the surface of the base layer 2 and slip between the pair of feed belt means 12 and the corresponding side surface of the base layer 2. The pair of feed belt means 12 conveys the base layer 2 while pressing the corresponding side surfaces thereof, so that the base layer 2 can be positioned correctly while suppressing the blur in the width direction of the base layer 2 and cooperate with the pair of pressing rollers 10. It acts to feed the base layer 2 to the preceding base layer 2 without gaps.

The above-mentioned construction board manufacturing apparatus constructed in accordance with the present invention is configured such that the protection sheet 32 unwound from the unwind roller 30 is wound around the upper main roller 4 and substantially reversed. One surface of the base layer 2 conveyed to the gap between the upper main roller 4 and the lower main roller 6 by the pair of pressing rollers 10 and the pair of feed belt means 12 is superimposed on one surface with the kneaded material 22 interposed therebetween and compressed while being compressed. 4
And the lower main roller 6 is configured to be conveyed together with the base layer 2, so that the base layer 2, the kneaded material 22 attached to the surface of the base layer 2, and the protection adhered so as to cover the surface of the kneaded material 22 An architectural board composed of a laminate with the sheet 32 is efficiently produced. The construction board is also efficiently produced with a relatively simple construction and therefore at a relatively low cost. Furthermore, the building boards are continuously mass-produced.

In the apparatus for manufacturing a building board constructed according to the present invention, the pair of pressing rollers 10
A kneaded material 22 of a slurry-like curable composition is supplied upstream of the upper main roller 4 to the surface of the base layer 2 conveyed to the gap between the upper main roller 4 and the lower main roller 6 by the pair of feed belt means 12. And a kneaded material supply means 20 for supplying the kneaded material 22 supplied to the surface of the base layer 2 so that the kneaded material 22 does not leak in the width direction of the transport path P. A pair of side plates 50 arranged to extend upstream of the transport path P. The kneaded material 22 is supplied to the surface of the base layer 2 immediately upstream of the upper main roller 4. The outer peripheral surface of the upper main roller 4 and each of the side plates 50 are provided on the surface of the base layer 2 immediately upstream of the pressing portion where the outer peripheral surface of the upper main roller 4 is pressed against the surface of the base layer 2 via the protective sheet 32. Thereby, a stagnant portion of the kneaded material 22 is formed in which the three sides except the upstream side of the transport path P are substantially closed. As shown in FIG. 1, the kneaded material 22 is retained in a wedge shape in the retaining portion by the pressing of the upper main roller 4. The kneaded material 22 discharged to the surface of the base layer 2 is effectively diffused over the entire width of the surface, and the kneaded material 22 is adhered to the entire surface of the surface. In this state, one surface of the protective sheet 32 wound around the upper main roller 4 and substantially inverted is attached to the surface of the base layer 2 by the kneaded material 22.
The kneaded material 22 is adhered with a uniform thickness over the entire surface of the base layer 2 in the process of being passed together with the base layer 2 by the upper main roller 4 and the lower main roller 6 while being polymerized and compressed while sandwiching the base layer 2. The entire surface is covered with the protective sheet 32 adhered through the kneaded material 22 adhered with a uniform thickness. Upper main roller 4
The pressure at the press contact portion is increased in accordance with the increase in the peripheral speed of the kneaded material 22, so that the adhesion of the kneaded material 22 is improved.

In the above-mentioned construction board manufacturing apparatus constructed in accordance with the present invention, the kneaded material supply means 20 also comprises:
One discharge opening 24 positioned above and spaced from the surface of the base layer 2 and discharging the kneaded material 22 toward the surface.
a kneaded material supply pipe 24 having a
a is configured to be arranged at the center in the width direction of the transport path P. The kneaded material 22 is discharged and supplied from the discharge opening 24a of the pipe 24 to the central portion in the width direction on the surface of the base layer 2 which is continuously conveyed, as described above, immediately upstream of the upper main roller 4. However, the surface of the base layer 2 immediately upstream of the upper main roller 4 has a kneaded material 22 as described above.
Is formed, so that the kneaded material 22 is only discharged and supplied to the center of the surface of the base layer 2 in the width direction.
The kneaded material 22 is diffused over the entire width of the surface. Therefore, with a remarkably simple structure, the kneaded material 22 can be sufficiently and reliably adhered not only to the central region in the width direction of the surface of the base layer 2 but also to the entire region including both side edges in the width direction.

In the construction board manufacturing apparatus constructed in accordance with the present invention, a part of each side plate 50 is disposed in close contact with a part of the upper main roller 4, and the side plate 50
Are defined so that the inner surfaces facing each other can be in close contact with the corresponding side surfaces of the base layer 2 conveyed by the pair of pressing rollers 10 and the pair of feed belt means 12, so that the above-mentioned stagnation portion The leakage of the kneaded material 22 to the above three directions is reliably prevented. The leakage of the kneaded material 22 in the staying portion in the upstream direction of the transport path P is reliably prevented because the base layer 2 is constantly moved in the downstream direction.

In the above construction board manufacturing apparatus constructed in accordance with the present invention, the length of the upper main roller 4 in the axial direction is defined to be longer than the width of the base layer 2. A certain upper end surface on the downstream side is brought into close contact with a part of the outer peripheral surface, which is the above-mentioned part of the upper main roller 4, extending from the lower end toward the upstream side of the transport path P.
With this configuration, it is possible to reliably prevent the kneaded material 22 from leaking in the axial direction along the outer peripheral surface of the upper main roller 4 covered with the protective sheet 32.

In the above-mentioned construction board manufacturing apparatus constructed in accordance with the present invention, the axial length of the lower main roller 6 is further defined to be shorter than the width of the base layer 2, and each of the side plates 50 is moved along the transport path P. And are urged in a direction approaching each other by each of the compression coil springs 60 which are urging means. With this configuration, the sealing properties between both side surfaces (side edges) in the width direction of the base layer 2 and each of the side plates 50 are improved,
It is possible to reliably prevent the kneaded material 22 from leaking from the surface of the base layer 2 in the width direction in the staying portion.

In the construction board manufacturing apparatus constructed in accordance with the present invention, each of the side plates 50 further comprises:
An inner vertical surface 55 adhered to the corresponding side surface of the base layer 2,
And an overhang portion 56 formed of an inclined surface extending upward from the upper end of the inner vertical surface 55 toward the inside, and each of the overhang portions 56 is in a state where each of the inner vertical surfaces 55 is in close contact with a corresponding side surface of the base layer 2. , So as to form a gap above the corresponding side edge of the surface of the base layer 2 (see FIGS. 7 and 8). With this configuration, the kneaded material 22 compressed in the gap between the upper main roller 4 and the lower main roller 6 is prevented from leaking from the surface of the base layer 2 in the width direction without fail.
This makes it possible to easily, reliably and continuously manufacture a building board having inclined surfaces (chamfered surfaces) on both side edges of the surface of the second. In the architectural board manufactured using the side plate 50 shown in FIG. 8, no chamfered surface is formed on both side edges in the width direction of the base layer 2. In other words, the boundary between the both side edges in the width direction and the corresponding side surface on the surface of the base layer 2 is formed as a boundary corner. After being cured, the kneaded material 22 constituting the decorative layer is disposed so as to cover the entire surface of the base layer 2. On both side edges in the width direction of the kneaded material 22, chamfered surfaces (recessed surfaces) in a form in which a boundary between the surface of the kneaded material 22 and the corresponding side surface of the kneaded material 22 are removed are formed. The protective sheet 32 is provided so as to cover the entire surface of the surface of the kneaded material 22 except for each of the substantially upper chamfered surfaces. The width of the protective sheet 32 and the disposition position with respect to the kneaded material 22 are defined in advance as such. The receding surface of the laminate is defined by each chamfered surface of the kneaded material 22.

In the building board manufacturing apparatus constructed in accordance with the present invention, a chamfered surface 2a is formed between both side edges of the surface of the base layer 2 and the corresponding side surface, and each of the side plates 50 An overhang portion 5 comprising an inner vertical surface 55 that is in close contact with the corresponding side surface of the base layer 2 and an inclined surface that extends upward from the upper end of the inner vertical surface 55 toward the inside.
6, and a gap is formed above each of the overhang portions 56 with respect to the corresponding chamfered surface 2a of the base layer 2 in a state where each of the inner vertical surfaces 55 is in close contact with the corresponding side surface of the base layer 2. (See FIG. 7) or in close contact (see FIG. 9). In an embodiment in which a gap is formed above the corresponding chamfered surface 2a of the base layer 2 (see FIG. 7), the kneaded material 22 compressed in the gap between the upper main roller 4 and the lower main roller 6 is formed. An inclined surface (chamfered surface) along the chamfered surface 2a of the base layer 2 is provided on both side edges of the surface of the kneaded material 22 while reliably preventing leakage from the surface of the base layer 2 in the width direction. This makes it possible to easily and surely and continuously manufacture such architectural boards. FIG.
7, the kneaded material 22 is applied so as to cover the entire area of the surface of the base layer 2 including each chamfered surface 2a. You. The protective sheet 32 is disposed so as to cover the entire surface of the surface of the kneaded material 22 except for a portion covering each of the substantially upper chamfered surfaces 2a. Width of protective sheet 32 and kneaded material 22
The arrangement position with respect to is defined in advance as such. Base layer 2
Each of the receding surfaces of the laminate is defined by the surface of the kneaded material 22 covering each of the chamfered surfaces 2a.

Further, in the embodiment, which is configured so as to be able to be in close contact with the corresponding chamfered surface 2a of the base layer 2 (see FIG. 9), the material is compressed in the gap between the upper main roller 4 and the lower main roller 6. In practice, the kneaded material 22 is prevented from leaking from the surface of the base layer 2 in the width direction at a level that does not cause any problem in practical use, and the inclined edges that are not covered with the kneaded material 22 are formed on both side edges of the surface of the building board. An object of the present invention is to make it possible to manufacture an architectural board having a surface (chamfered surface) easily, reliably and continuously. In the building board manufactured in the form shown in FIG. 9 using the side plate 50 shown in FIGS. 5 to 7, the kneaded material 22 covers the entire surface of the surface of the base layer 2 except for each of the chamfered surfaces 2 a. Will be applied. The protective sheet is provided so as to cover the entire surface of the kneaded material 22. The width of the protective sheet 32 and the disposition position with respect to the kneaded material 22 are defined in advance as such. Chamfered surface 2 of base layer 2
Each surface of a defines each of the receding surfaces of the laminate.

As shown in FIGS. 7 to 9, by using the side plate 50 having the overhang portion 56 formed thereon, a building board having a chamfered surface which is a receding surface on both side edges of the surface is continuously manufactured. It is possible to do. Each of the chamfered surfaces constitutes a receding surface with respect to the surface of the architectural board. After the kneaded material 22 of the architectural board thus manufactured is cured to form a decorative layer, a pair of the chamfered surfaces is formed. By arranging the side surfaces of the building board adjacent to each other and in parallel on the surface of the base, the base of the interior or exterior of the wall is constructed. Between each adjacent side of the building board, the mutually inclined receding surfaces form joints that form a substantially V-shaped groove structure. With the protective sheet 32 disposed on each of the building boards, the joint is filled with a caulking material, and the surface is leveled with a suitable spatula. The caulking material protruding from the joint is received on the surface of the side edge of the protective sheet 32. After the caulking material has been cured, joints can be decorated by peeling off each of the protective sheets 32 from the surface of the decorative layer. Therefore, it is possible to perform joint makeup with a caulking material without using a masking tape as in the related art, and excellent effects such as labor burden, cost reduction, and shortening of the construction period are obtained. Things. ADVANTAGE OF THE INVENTION According to the manufacturing apparatus of the building board by this invention, it becomes possible to manufacture the useful building board efficiently and continuously as mentioned above.

On the other hand, as shown in FIG. 10, by using the side plate 50 without forming the overhang portion 56, it is possible to continuously manufacture the building board of the above-described form in which both side edges in the width direction of the surface are at right angles. Becomes possible. After the kneaded material 22 of the building board thus manufactured is cured to form a decorative layer, the side surfaces of the pair of building boards are arranged adjacent to each other in parallel on the surface of the base, thereby forming a wall. The base of the interior or exterior of is constituted. Between each adjacent side of the building board, a joint is formed that does not have a receding surface as in the previously described embodiment. For this reason, the makeup of the joint is achieved by attaching an appropriate joint makeup member with the side edges of the protective sheet 32 peeled off.

In the construction board manufacturing apparatus according to the present invention, the upper main roller 4 is formed of a rigid body which does not substantially elastically deform, and more specifically, is entirely formed of a metal material. . In the above embodiment, the upper main roller 4 is configured by applying chrome plating to the outer peripheral surface of a steel roller. With this configuration, when there is a relatively hard foreign substance (for example, a relatively large mass of mica or pebbles compounded to improve the design of the decorative layer) in the kneaded material 22 of the slurry-like curable composition Even so, the protection sheet 32 can be prevented from being torn and damaged by pushing the foreign matter into the inside of the base layer 2 from the surface of the base layer 2 by pressing against the outer peripheral surface of the upper main roller 4. This embodiment is effective when the surface of the base layer 2 is formed of a material having a hardness low enough to accept foreign substances (in the embodiment, cardboard). The effect is that the upper main roller 4 and the lower main roller 6 are driven to rotate at the same peripheral speed, so that the outer peripheral surface of the upper main roller 4 and thus the protective sheet 3 wrapped around it.
This is ensured by the fact that there is substantially no speed difference between the pressure contact portion between one surface of the base layer 2 and the surface of the base layer 2. In this embodiment, the lower main roller 6 is formed by applying chrome plating to the outer peripheral surface of a steel roller. However, at least the outer peripheral portion is formed of a material having elasticity, for example, an embodiment formed of synthetic rubber. is there.

In the construction board manufacturing apparatus according to the present invention, at least the outer peripheral edge of the upper main roller 4 is formed of an elastic material, for example, synthetic rubber, contrary to the above embodiment. Other embodiments also hold. With this configuration, even when the relatively hard foreign matter as described above exists in the kneaded material 22 of the slurry-like curable composition, the protective sheet 32 is absorbed by the deformation of the elastic material and the protective sheet 32 is formed. Even when the protection sheet 32 is slightly expanded, the protection sheet 32 is reliably prevented from being torn and damaged. This embodiment is effective when the base layer 2 has a relatively high hardness, contrary to the above. However, when the base layer 2 is formed of a material having a low hardness as described above (in the embodiment, cardboard), the foreign matter is not generated. In addition to the fact that a part of the protective sheet 32 is slightly swollen due to the deformation of the elastic material and the protective sheet 32 is slightly expanded, a part of the protective layer 32 is pushed into the base layer 2 from the surface thereof.
Is reliably prevented from being torn and damaged. In this embodiment, the lower main roller 6 is configured by applying chrome plating to the outer peripheral surface of a steel roller, and the lower main roller 6 is formed of a material having elasticity at least at the outer peripheral edge thereof, for example, synthetic rubber. In any of the embodiments formed by The kneaded material 22 is relatively thickly and evenly adhered to the surface of the base layer 2 by the above-described compression action on the base layer 2 by the upper main roller 4 and the lower main roller 6. When the upper main roller 4 and / or the lower main roller 6 are in an embodiment in which at least the outer peripheral edge is made of an elastic material, for example, synthetic rubber, the embodiment is more effectively performed.

FIGS. 11 and 12 show another embodiment of the kneaded material supply pipe 24 which is kneaded material supply pipe means. In this embodiment, the downstream end of the kneaded material supply pipe 24 having a circular cross section is formed substantially flat (in practice, it is configured by connecting a flat member having both open ends to the downstream end of the pipe 24. ). Thus, one discharge opening 24 defining the downstream end of the flat pipe 24
a has both sides extending substantially parallel to each other at a distance from each other;
It is formed in a long hole shape consisting of both ends defining both ends of both sides. The discharge opening 24a formed in such a long hole shape is arranged to extend from one end to the other end in the width direction of the transport path P. That is, the discharge opening 2
4a is positioned so as to extend from one end to the other end in the width direction at an interval above the surface of the base layer 2. The kneaded material 22 is discharged / supplied from the discharge opening 24a of the pipe 24 to almost the entire area in the width direction on the surface of the continuously transported base layer 2 immediately upstream of the upper main roller 4 as described above. . According to this configuration, the kneaded material 22 can be adhered over the entire surface of the base layer 2, but this operation can be stably performed immediately after the supply of the kneaded material 22 is started.

In still another embodiment of the kneaded material supply pipe 24 which is kneaded material supply pipe means shown in FIG. 13, a plurality of flat portions (three in the embodiment) of the discharge opening 24a shown in FIG. Is closed. Thus, the downstream end of the flat pipe 24 is defined by a plurality of (four in the embodiment) discharge openings 24a. According to this configuration, substantially the same operation and effect as those described above by the pipe 24 shown in FIGS. 11 and 12 can be obtained. In the case of this embodiment, means for controlling the discharge amount of the kneaded material 22 from each discharge opening 24a to be substantially the same, for example, by changing the sectional area of the two inner discharge openings 24a to the two outer discharge openings 2
It is desirable to make the cross-sectional area smaller than 4a.

Another embodiment of the kneaded material supply pipe 24, which is a kneaded material supply pipe means shown in FIG. 14, is a method in which a conveying path P is provided at a vertically lower end of the pipe 24 having a circular cross section shown in FIG.
And a plurality of (four in the embodiment) branch pipes 24c extending vertically downward with a space between both ends and an intermediate portion of the horizontal pipe 24b extending horizontally in the width direction of the horizontal pipe 24b. It is constituted by doing.
Each downstream end (downstream end of the pipe 24) of the branch pipe 24c defines a discharge opening 24a of the pipe 24, respectively. Branch pipes 24 arranged at both ends of the horizontal pipe 24b
Each of c is positioned at both ends in the width direction of the transport path P, and each of the other branch pipes 24c is positioned at an intermediate portion in the width direction of the transport path P. Therefore, the discharge opening 24a
Are arranged from one end to the other end in the width direction of the transport path P. Then, each of the discharge openings 24a is positioned from one end to the other end in the width direction at a distance above the surface of the base layer 2. According to this configuration, substantially the same operation and effect as those described above by the pipe 24 shown in FIGS. 11 and 12 can be obtained. Also in this embodiment, means for controlling the discharge amount of the kneaded material 22 from each discharge opening 24a to be substantially the same, for example, the cross-sectional area of the two inner branch pipes 24c and therefore the discharge opening 24a is reduced. Two branch pipes 2
4c Therefore, it is desirable to make the cross-sectional area smaller than the discharge opening 24a.

FIGS. 15 and 16 show a main part of a building board manufacturing apparatus provided with still another embodiment of the kneaded material supply pipe 24. Upper main roller 4 of transport path P
A stationary frame 80 is disposed immediately upstream of the position where the lower main roller 6 is disposed. The stationary frame 80 is moved along the transport path P.
And a pair of vertical frames 82 erected upright, and a horizontal frame 84 installed between upper ends of the vertical frames 82. The horizontal frame 84 is disposed so as to extend horizontally in the width direction of the transport path P at an interval above the transport path P. A rodless air cylinder 86 is attached to the horizontal frame 84 so as to extend therewith. A well-known configuration may be used per se. The slide member 88 of the rodless air cylinder 86 is detachably attached so that the vicinity of the downstream end of the pipe 24 extends vertically by an appropriate clamp means (not shown). Can be The downstream end of the pipe 24 and thus the discharge opening 2
4a is continuously reciprocated at a predetermined speed between one end and the other end in the width direction of the transport path P by the rodless air cylinder 86 (see the arrow in FIG. 16). Therefore, the rodless air cylinder 86 constitutes a reciprocating means for reciprocating the pipe 24 as the kneaded material supply means as described above. In order to allow the reciprocating movement of the downstream end of the pipe 24 as described above, a part of the pipe 24 above the mounting portion for the rodless air cylinder 86 is:
It is composed of a flexible pipe 24d. Kneaded material 22
Is transported by the rodless air cylinder 86
As described above, the base layer 2 continuously conveyed from the discharge opening 24a continuously reciprocated between one end and the other end in the width direction of the upper main roller 4 as described above.
It is discharged and supplied to the surface of. Therefore, the kneaded material 22
It is discharged and supplied as desired over the entire area between one end and the other end in the width direction of the surface of the base layer 2. According to this configuration, the kneaded material 22 can be adhered over the entire surface of the base layer 2.
Can be stably performed immediately after the start of supply.

As described above, the present invention has been described in detail based on the embodiments with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments, and furthermore, does not depart from the scope of the present invention. Various other variations or modifications are possible. For example, in the above embodiment, each urging means of the side plate 50 is constituted by the compression coil spring 60, but an embodiment in which one of the compression coil springs 60 is constituted by an air cylinder is also realized. In the above embodiment, the receding surface of the architectural board is formed from a flat inclined surface, but there is also an embodiment formed from a curved surface (a convex curved surface or a concave curved surface). Such deformation is caused by the side plate 5
It is easy to appropriately set the shape of the surface of each overhang portion 56 of 0. Further, by forming the overhang portion 56 on only one of the side plates 50, it is also possible to easily form the receding surface on only one of the width direction side edges of the building board.

In the present invention, the kneaded material supply means may further include a kneading material which is positioned above the surface of the base layer at a distance and has one discharge opening for discharging the kneaded material toward the surface. It is preferable that the apparatus includes a supply pipe means, and the discharge opening is formed in a long hole shape and is arranged to extend from one end to the other end in the width direction of the transport path. Furthermore, tension detecting means for detecting the tension of the protective sheet is provided between the upper main roller and the unwinding roller, and the unwinding roller includes a braking means with a variable braking force. It is preferable that the tension of the protection sheet is controlled to a predetermined tension by controlling a braking force of the braking means based on a detection signal from the tension detecting means. Still further, the transporting means includes a pair of pressing rollers disposed upstream and downstream of the upper and lower main rollers and the lower main roller of the transporting path with a gap above and below the transporting path, A plurality of conveying rollers disposed further upstream than the pair of pressing rollers in the conveying path, wherein the gap between the pair of pressing rollers is a surface of the base layer where the pair of pressing rollers pass through the gap. The upper main roller, the lower main roller, and the plurality of transport rollers are driven to rotate at the same peripheral speed, and the pair of pressing rollers are driven at the same peripheral speed. In addition, it is preferable that the roller is driven to rotate at a higher peripheral speed than the upper main roller, the lower main roller, and the plurality of transport rollers. Still further, between the pair of pressing rollers and the plurality of transport rollers of the transport path, a pair of feed belt means are provided at intervals in the width direction of the transport path with the transport path therebetween. The pair of feed belt means are disposed so as to extend along the transport path, and a distance between the pair of feed belt means is defined so as to press against a corresponding side surface of the base layer passing through the distance, and the pair of feed belt means are the same as each other. It is preferable to be driven to rotate at a peripheral speed and at the same peripheral speed as the pair of pressing rollers.

[0059]

According to the construction board manufacturing apparatus of the present invention, the lamination of the base layer, the kneaded material attached to the surface of the base layer, and the protective sheet adhered so as to cover the surface of the kneaded material. An architectural board made of a body can be efficiently produced. In addition, a relatively simple configuration enables efficient production at a relatively low cost. Furthermore, it can be mass-produced continuously. Furthermore,
The kneaded product can be manufactured while reliably preventing the kneaded material from leaking outward from the surface of the base layer. Furthermore, the building board of the above-described configuration having the receding surfaces on both side edges of the surface can be manufactured easily, reliably, and continuously. Furthermore, it can be manufactured without damaging the protective sheet.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of a main part of an embodiment of a building board manufacturing apparatus configured according to the present invention as viewed from a side.

FIG. 2 is a partially cutaway schematic view of a part of the apparatus shown in FIG. 1 as viewed from above.

FIG. 3 is a cross-sectional view taken along the line AA of FIG.

FIG. 4 is a side view of the left side plate shown in FIG. 3 as viewed from the right side in FIG. 3;

FIG. 5 is a top view of the side plate shown in FIG. 4;

FIG. 6 is a view of the side plate shown in FIG. 4 as viewed from the right side in FIG. 4;

FIG. 7 is an enlarged view showing a main part of FIG. 6;

8 is a view showing another embodiment of the side plate shown in FIG. 4, and is a view similar to FIG. 7;

9 is a view showing still another embodiment of the side plate shown in FIG. 4, and is a view similar to FIG. 7;

FIG. 10 is a view showing still another embodiment of the side plate shown in FIG. 4, and is a view similar to FIG. 7;

FIG. 11 is a view showing another embodiment of the kneaded material supply pipe means, which is similar to FIG. 3;

FIG. 12 is a view showing a discharge opening of the kneaded material supply pipe means shown in FIG. 11;

FIG. 13 is a diagram showing another embodiment of the discharge opening of the kneaded material supply pipe means shown in FIG.

FIG. 14 is a view showing still another embodiment of the kneaded material supply pipe means, similar to FIG. 3;

FIG. 15 is a schematic structural view of another embodiment of a building board manufacturing apparatus according to the present invention, which is a side view of a main part provided with still another embodiment of a kneaded material supply pipe means.

16 is a cross-sectional view taken along the line BB of FIG.

[Explanation of symbols]

 Reference Signs List 2 base layer 2a chamfered surface 4 upper main roller 6 lower main roller 8, 9, 18 transport roller 20 kneaded material supply means 22 kneaded material 24 kneaded material supply pipe 24a discharge opening 30 unwinding roller 32 protective sheet 50 side plate 55 inner vertical surface 56 Overhang part 60 Compression coil spring 86 Rodless air cylinder

Claims (11)

[Claims] An upper main roller and a lower main roller disposed with a gap above and below a horizontally extending base layer transport path, and the upper and lower main rollers along the transport path. Conveying means for conveying the rollers toward the gap, an unwinding roller disposed downstream of the upper main roller and having a protective sheet laminated thereon and wound thereon, and the upper and lower main rollers by the conveying means Kneaded material supply means for supplying a kneaded material of a curable composition in the form of slurry on the upstream side of the upper main roller to the surface of the base layer conveyed to the gap, and supplied to the surface of the base layer. A pair of side plates disposed so as to extend upstream from a position where the upper main roller is disposed with the conveyance path interposed therebetween so that the kneaded material does not leak in the width direction. The protection sheet unwound from the exit roller is wound around the upper main roller. One surface of the base layer conveyed to the gap by the conveyance means in a substantially inverted state is conveyed with the base layer by the upper and lower main rollers while one surface is polymerized with the kneaded material interposed therebetween and compressed. By doing
An architectural board consisting of a laminate of the base layer, the kneaded material adhered to the surface of the base layer, and the protective sheet adhered to cover the surface of the kneaded material is formed. Characteristic building board manufacturing equipment. 2. The kneaded material supply means, wherein the kneaded material supply means is positioned above the surface of the base layer at a distance and has at least one discharge opening for discharging the kneaded material toward the surface. The manufacturing apparatus of a building board according to claim 1, comprising: 3. The kneaded material supply means includes a kneaded material supply pipe means which is positioned above the surface of the base layer at a distance and has one discharge opening for discharging the kneaded material toward the surface. 2. The apparatus for manufacturing a building board according to claim 1, wherein the discharge opening is disposed at a central portion in a width direction of the transport path. 3. 4. A kneaded material supply means, comprising: a kneaded material supply means positioned at a distance above the surface of the base layer and having one discharge opening for discharging the kneaded material toward the surface; And reciprocating means for reciprocating the kneaded material supply pipe means so that the discharge opening reciprocates between one end and the other end in the width direction of the transport path. An apparatus for manufacturing a building board as described above. 5. A part of each of the side plates is disposed in close contact with a part of the upper main roller, and the interval between the side plates is such that inner surfaces facing each other are conveyed by the conveying means. 2. The structure according to claim 1, wherein the base layer is provided so as to be able to adhere to a corresponding side surface of the base layer.
The manufacturing apparatus for a building board according to any one of claims 4 to 4. 6. A length of the upper main roller in the axial direction is longer than a width of the base layer, and a downstream upper end surface, which is a part of each of the side plates, is formed by the part of the upper main roller. Of the outer peripheral surface,
6. The building board manufacturing apparatus according to claim 5, wherein the apparatus is closely attached to a partial area extending from a lower end toward an upstream side of the transport path. 7. An axial length of the lower main roller is defined to be shorter than a width of the base layer, and each of the side plates is provided on a frame means provided on a corresponding side of the transport path. The building board manufacturing apparatus according to claim 5, wherein the building board is urged in a direction approaching each other by the urging means. 8. Each of the side plates includes an inner vertical surface that is in close contact with the corresponding side surface of the base layer, and an overhang portion including an inclined surface that extends upward from the upper end of the inner vertical surface toward the inside. , Each of the overhang portions, with each of the inner vertical surfaces being in close contact with the corresponding side surface of the base layer,
The building board manufacturing apparatus according to any one of claims 5 to 7, wherein a gap is positioned above a corresponding side edge of the surface of the base layer. 9. A chamfered surface is formed between both side edges of the surface of the base layer and a corresponding side surface, and each of the side plates has an inner vertical surface closely attached to the corresponding side surface of the base layer; An overhang portion comprising an inclined surface extending upward from the upper end of the inner vertical surface toward the inside, wherein each of the overhang portions is in a state in which each of the inner vertical surfaces is in close contact with the corresponding side surface of the base layer. With respect to the corresponding chamfered surface of the base layer,
The manufacturing apparatus of a building board according to any one of claims 5 to 7, wherein the building board is positioned so that a gap is formed or can be in close contact with the building board. 10. The building board manufacturing apparatus according to claim 1, wherein said upper main roller is formed of a metal material. 11. An apparatus according to claim 1, wherein at least the outer peripheral edge of said upper main roller is formed of an elastic material.
The manufacturing apparatus of a building board according to any one of the above.