JP2019059049A - Method for producing building board - Google Patents

Abstract

To provide a method for producing a building board capable of simplifying equipment for producing a building board.SOLUTION: Provided is a method for producing a building board comprising: a water-hydraulic material feeding step where water is fed onto a conveyor 13, and a cement-containing hydraulic material 10 is fed onto the conveyor 13; a decorative material scattering step where a decorative material 31 is scattered to the surface of the hydraulic material 10 without performing hydrolysis; and a decorative material hydrolysis step where the surface of the decorative material 31 is subjected to hydrolysis.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a method of manufacturing a building board. More particularly, the present invention relates to a method of manufacturing a building board suitable for outer wall materials, roofing materials and the like.

  Conventionally, after supplying a hydraulic material containing cement onto a belt conveyor, the hydraulic material is press-formed, and a construction board or mineral board is manufactured by curing and hardening the pressed hydraulic material. Has been done.

  For example, Patent Document 1 proposes a method of producing an inorganic plate. The method of manufacturing this mineral board is to spray water 40 from the water sprayer 42 onto the belt conveyor 13 as shown in FIG. 3 and to supply the dry hydraulic material 11 onto the sprayed belt conveyor 13; The hydraulic material 11 is pressurized by the pressure roller 15 while being transported by the belt conveyor 13, and then water is sprinkled from the water sprayer 16 onto the upper surface of the hydraulic material 11; this sprinkled hydraulic material 11 is belt conveyor 13, pressurize with the pressure roller 17 while conveying at a later time, and then dry the surface layer material 21 from the surface layer material feeder 22 onto the upper surface of the hydraulic material 11 and supply it in a dry state; hydraulic material 11 and surface layer material 21 Is conveyed by the belt conveyor 13 and pressurized by the pressure rollers 25, 27, and the water 52 is sprayed from the water sprinkler 26 onto the upper surface of the surface material 21 between the pressure rollers 25, 27. And as well as it includes cutting to a predetermined length by a cutter 44 by transferring the surface layer material 21 and the hydraulic material 11 which is the sprinkler to the cutting table 43; it is.

  However, in the case of Patent Document 1, since the dry hydraulic material 11 is supplied to the belt conveyor 13, the hydraulic property is sufficient to make the water content of the hydraulic material 11 and the surface material 21 sufficient before curing and curing. After the supply of the material 11 and after the supply of the surface material 21, it was necessary to spray water.

Patent No. 4960683

  The present invention has been made in view of the above-mentioned point, and an object of the present invention is to make it possible to make the water content sufficient before curing and curing without supplying water immediately after supplying the hydraulic material. Thus, it is an object of the present invention to provide a method of manufacturing a building board which can simplify equipment for manufacturing the building board.

The method of manufacturing a building board according to the present invention comprises the steps of: supplying water on a conveyor, and supplying a hydraulic material containing cement on the conveyor;
A cosmetic material spraying step of spraying a cosmetic material without hydrolyzing the surface of the hydraulic material;
And d) adding a cosmetic material to the surface of the cosmetic material.

  The method of manufacturing a building board according to the present invention may further include a cosmetic material pressing step of pressing the surface of the decorative material between the cosmetic material spraying step and the cosmetic material adding step.

  According to the present invention, equipment for manufacturing a building board can be simplified.

FIG. 1 is a schematic view showing a method of manufacturing a building board according to an embodiment of the present invention. FIG. 2A is a longitudinal sectional view schematically showing a cosmetic material scattering step in the above manufacturing method. FIG. 2: B is a longitudinal cross-sectional view which shows roughly the cosmetics material pressurization process in the manufacturing method same as the above. FIG. 3 is a schematic view showing a conventional method of manufacturing a building board.

  Hereinafter, modes for carrying out the present invention will be described with reference to FIGS. 1, 2A, and 2B.

  In FIG. 1, the manufacturing method of the building board which concerns on one Embodiment is shown roughly.

  The method of manufacturing a building board according to the present embodiment includes a water / hydraulic material supply process, a cosmetic material dispersion process, and a cosmetic material addition process.

  The water and hydraulic material supply step is a step of supplying water from the water sprayer 42 onto the conveyor (belt conveyor) 13 and then supplying the hydraulic material 10 containing cement from the hydraulic material supply machine 7 onto the conveyor 13 It is. In this step, various components such as cement contained in the hydraulic material 10 are automatically weighed by the raw material hoppers 7a, 7b and 7c, and the weighed components are uniformly dry mixed in the hydraulic material feeder 7 Then, a dry hydraulic material 10 is produced. And this dry hydraulic material 10 is continuously dropped and supplied to the conveyance surface of the conveyor 13 in drive rotation. The hydraulic material 10 supplied to the conveyor 13 in this manner is formed into a sheet. The sheet-like hydraulic material 10 has a fine uneven structure 10 a formed on the upper surface thereof.

  The hydraulic material 10 contains cement as a main component, and can contain, for example, aggregates and reinforcing fibers in addition to the cement. Examples of cement include portland cement, fly ash cement and blast furnace cement. Further, as the aggregate, for example, crushed stone such as granite and serpentine, silica stone powder, shirasu balloon, glass balloon, perlite, sand and beads can be mentioned. Further, examples of the reinforcing fibers include cellulose pulp fibers, mineral fibers, organic resin fibers such as polypropylene and vinylon, glass fibers, carbon fibers and metal fibers. Moreover, the hydraulic material 10 can contain an admixture according to the need. Examples of this admixture include silica fume. Moreover, the hydraulic material 10 can contain a siliceous raw material. Examples of the siliceous raw material include powdered silica and fly ash. The hydraulic material 10 can contain the component suitable for ceramic material other than the said component.

  The conveyor 13 is a traveling belt conveyor, and an endless loop-shaped traveling belt 23 is provided so as to be able to move forward. The traveling belt 23 travels in one direction from the base end side to the end side of the conveyor 13.

  FIG. 2A schematically shows a cosmetic material scattering step in the present manufacturing method.

  The cosmetic material spraying step is a step of spraying the cosmetic material 31 from the cosmetic material sprayer 30 without further adding water to the surface (upper surface) of the sheet-like hydraulic material 10. The cosmetic material 31 is dry-applied from the cosmetic material spreader 30 to the upper surface of the hydraulic material 10. Specifically, the cosmetic material 31 is dispersed so as to fill the recess of the uneven structure 10a without smoothing the uneven structure 10a. The cosmetic material 31 thus dispersed is formed into a layer by passing under the thickness adjusting plate 24. Then, a laminate 45 including the layered cosmetic material 31 and the sheet-like hydraulic material 10 is formed. In addition, the cosmetic material 31 can be formed into a layer by spraying the cosmetic material 31 from the cosmetic material spreader 30, and by adjusting the amount of the cosmetic material 31 to be sprayed, the layered cosmetic material 31 can have an appropriate thickness. If it can be provided, the thickness adjusting plate 24 may not be disposed.

  The cosmetic material spreader 30 is an apparatus for spraying the dry cosmetic material 31 from above the hydraulic material 10. The structure is not particularly limited as long as the cosmetic material spreader 30 can spray the dry cosmetic material 31 from the lower end thereof. For example, the cosmetic material spreader 30 can be provided with a sieve such as a mesh or a slit at its lower end. When the cosmetic material spreader 30 includes a sieve, the particle size of the cosmetic material 31 to be sprayed can be adjusted.

  The decorative material 31 contains cement as a main component, and may contain a coloring agent such as a pigment in addition to the cement. Examples of the colorant include black pigments containing iron oxide, red pigments containing red iron oxide, green pigments containing chromium oxide, and white pigments containing titanium oxide. Among these pigments, one may be used as a colorant, or a combination of two or more pigments may be used as a colorant. Moreover, the cosmetic material 31 can contain the component suitable for porcelain-based material other than the said component according to the objective. In addition, the decorative material 31 may contain reinforcing fibers. This reinforcing fiber improves the surface strength of the inorganic plate. Further, the reinforcing fibers and the reinforcing fibers in the hydraulic material 10 on the conveyor 13 are entangled, and the adhesion between the decorative material 31 and the hydraulic material 10 is improved.

  Moreover, it is preferable not to arrange a pressure roller (pressure roll), a water sprinkler, etc. like FIG. 3 between a water and hydraulic material supply process and a cosmetic material dispersion process. In this case, the equipment can be simplified, whereby the complexity of the manufacturing operation can be reduced and the manufacturing cost can be reduced in the present manufacturing method. Furthermore, since the concavo-convex structure 10 a is difficult to be smoothed, the cosmetic material 31 can be dispersed to the concavo-convex structure 10 a as shown in FIG. 2A in the cosmetic material dispersing step. Thereby, even if it presses from the upper surface of this decorative material 31 after spraying of the decorative material 31 as mentioned later, it becomes difficult to smooth the uneven structure 10a, and the adhesiveness of the decorative material 31 and the hydraulic material 10 improves. It can be done. Furthermore, in the building board obtained after hardening, the uneven structure 10a is hardly smoothed, and in the building board obtained after curing, it is flat between the layer (cosmetic layer) made of the decorative material 31 and the layer (base layer) made of the hydraulic material 10 An interface is less likely to occur, and it can be expected that a part of the cosmetic layer and a part of the base layer are entangled and bonded to each other.

  The cosmetic material adding step is a step of adding water to the surface (upper surface) of the cosmetic material 31 from the water sprinkler 26. By adding water in this manner, the moisture content of the laminate 45 including the cosmetic material 31 and the hydraulic material 10 can be made sufficient to be suitable for curing and curing described later. In addition, a sprinkler 26 may be disposed above the conveyor 13 and water may be sprinkled from the sprinkler 26 to water the upper surface of the cosmetic material 31. And the water sprinkled in this way may also be supplied to the hydraulic material 10 through the layer of the cosmetic material 31. The cosmetic material 31 after the water addition may be pressed by the pressure roll 27 from the upper surface thereof. In this case, even if the moisture content of the laminate 45 varies, the pressure roll 27 can reduce the variation in the water content. The moisture content of the laminate 45 can be appropriately adjusted as long as it is suitable for curing.

  The pressure roll 27 is configured to be rotatable about its axis. Furthermore, the pressure roll 27 is formed such that the outer peripheral edge of the cross section along the direction orthogonal to the axis is a circle. The pressure roll 27 is disposed such that the axis is orthogonal to the direction in which the traveling belt 23 travels.

  FIG. 2B schematically shows a cosmetic material pressing step in the present manufacturing method.

  The manufacturing method may further include a cosmetic material pressing process of pressurizing the upper surface of the cosmetic material 31 between the cosmetic material spraying process and the cosmetic material adding process. In this case, even if pressure is applied from the upper surface of the cosmetic material 31, the uneven structure 10a is not easily smoothed, and the adhesion between the hydraulic material 10 and the cosmetic material 31 can be improved. For this reason, a building board of higher quality can be obtained after curing. When pressing the cosmetic material 31 between the cosmetic material application process and the cosmetic material application process, the pressure roller 25 and the auxiliary pressure roller 25a may be disposed as shown in FIG. In this case, the cosmetic material 31 and the hydraulic material do not have the uneven structure 10a smoothed as shown in FIG. 2B even if the pressure is applied from the upper surface of the cosmetic material 31 before the water is added to the laminate 45 from the water sprayer 26. The adhesion to 10 can be improved. In particular, by pre-pressurizing with the sub pressure roll 25 a, it is possible to make springback difficult to occur at least in the decorative material 31 after the pressure roll 25. Thereby, the thickness of the cosmetic material 31 can be easily adjusted, and the adhesion between the cosmetic material 31 and the hydraulic material 10 can be improved.

  The pressure roll 25 is configured to be rotatable about its axis. Furthermore, the pressure roll 25 is formed such that the outer peripheral edge of the cross section along the direction orthogonal to the axis is a circle. The pressure roller 25 is disposed such that the axis is orthogonal to the direction in which the traveling belt 23 travels.

  The sub pressure roll 25a is configured to be rotatable about its axis. Furthermore, the sub pressure roll 25a is formed such that the outer peripheral edge of the cross section along the direction orthogonal to the axis is a circle. When arranging the sub pressure roll 25 a above the conveyor 13, the axis of the sub pressure roll 25 a is orthogonal to the traveling direction of the traveling belt 23. In addition, one sub pressure roll 25a may be disposed on the conveyor 13, or a plurality of sub pressure rolls 25a may be disposed.

  The manufacturing method can include a cutting step. This cutting step is a step of cutting the laminate 45 into a predetermined length by the cutter 44a after the cosmetic material adding step (after the pressure roll 27). Since such a cutter 44 a is disposed above the conveyor 13, the equipment can be simplified. The structure of the cutter 44a is not particularly limited as long as the cutter 44a can cut the laminate 45 on the conveyor 13. For example, the cutter 44a can include a pressure roll 44b and a cutting tooth 44c provided on the outer surface of the pressure roll 44b. In such an exemplary cutter 44a, the number of cutting teeth 44c may be one or more. When the cutter 44a includes a plurality of cutting teeth 44c, the cutting teeth 44c can be provided on the outer surface of the pressure roll 44b at equal intervals. According to the cutter 44a illustrated above, the pressure roll 44b can be rotated while pressing from the upper surface of the decorative material 31, and the laminate 45 can be cut by the cutting teeth 44c. For this reason, the laminated body 45 can be cut | disconnected, with the hydraulic material 10 and the decorative material 31 being stuck.

  The pressure roll 44b is configured to be rotatable about its axis. Furthermore, the pressure roll 44b is formed such that the outer peripheral edge of the cross section along the direction orthogonal to the axis is a circle. The pressure roller 44 b is disposed such that its axis is orthogonal to the direction in which the traveling belt 23 travels.

  In the present manufacturing method, after the cutting process, the laminate 45 may be pressed from the upper surface of the decorative material 31 by the pressure roll 28. In this case, even when pressure is applied from the upper surface of the decorative material 31 by the pressure roll 28, the adhesion between the decorative material 31 and the hydraulic material 10 can be improved without smoothing the uneven structure 10a. Furthermore, by applying pressure by the pressure roll 28, the thickness of the laminate 45 can be adjusted so as to be suitable for a building board obtained after curing and curing.

  The pressure roll 28 is configured to be rotatable about an axis. Furthermore, the pressure roll 28 is formed such that the outer peripheral edge of the cross section along the direction orthogonal to the axis is a circle. The pressure roller 28 is disposed such that the axis is orthogonal to the direction in which the traveling belt 23 travels.

  Moreover, the laminated body 45 can contain the color sand 33 spread on the upper surface of the cosmetic material 31. The color sand 33 is spread on the top surface of the decorative material 31 from the color sand feeder 32 after the pressure roll 28 and formed into a layer. The laminate 45 including the layer of color sand 33 formed in this manner may be pressed by the pressure roll 29 from the upper surface of the layer of color sand 33. In this case, the adhesion between the color sand 33 and the cosmetic material 31 can be improved. In addition, the pressure roll 29 may have a pattern formed on the outer surface thereof. In this case, it is possible to give the laminate 45 a shape according to the pattern of the pressure roll 29. Further, after the color sand 33 is sprayed, it is preferable not to add water from above the laminate 45 with a water sprayer or the like.

  The colored sand 33 is colored according to the appearance color of the building board obtained through the curing and curing process. The color sand 33 may be a single color or a plurality of colors. When the color sand 33 consists of color sand of multiple colors, each of the color sand may be sprayed from the color sand feeder. For example, when the color sand 33 comprises four color sands 33a, 33b, 33c and 33d, the color sand 33a is from the color sand feeder 32a, the color sand 33b is from the color sand feeder 32b, and the color sand 33c is color sand From the feeder 32c, colored sand 33d may be dispersed from the colored sand feeder 32d. Not limited to this, a plurality of color sands 33a, 33b, 33c and 33d may be mixed in advance, and this mixture may be dispersed from a color sand feeder.

  The pressure roll 29 is configured to be rotatable about its axis. Furthermore, the pressure roll 29 is formed such that the outer peripheral edge of the cross section along the direction orthogonal to the axis is a circle. The pressure roller 29 is disposed such that the axis is orthogonal to the direction in which the traveling belt 23 travels.

  Here, "orthogonal" according to the present embodiment may not be exactly orthogonal to the direction in which the traveling belt 23 travels, and if substantially orthogonal, it may be conceptually substantially orthogonal. Including.

  In this manufacturing method, a building board can be formed through the curing and curing step of curing and curing the laminate 45 after the pressure roll 29. The curing and curing step may be performed by arranging the conveyor 13 and another conveyor to be connected, and curing and curing the laminated body 45 supplied from the conveyor 13 sequentially. Further, when the curing and curing step is not connected to the conveyor 13 via another conveyor, the laminate 45 after the pressure roll 29 may be stacked on a conveying device such as a conveying pallet. Then, the stacked laminates 45 may be supplied as they are to the curing and curing step to be cured by curing, or the laminates 45 may be supplied to the curing and curing step one by one to be cured and cured. In addition, when carrying out the curing and hardening step, curing methods such as normal temperature curing, steam curing, autoclave curing and the like can be arbitrarily adopted.

  As described above, according to the present manufacturing method, equipment used for manufacturing the laminated body 45 without arranging a pressure roll, a water sprinkler and the like between the hydraulic material supply machine 7 and the decorative material spreader 30 is provided. Even if it simplifies, the laminated body 45 can be produced. Then, a construction board can be obtained by curing and curing the laminate 45.

10 Hydraulic material 13 Conveyor 31 Cosmetic material

Claims (2)

A water / hydraulic material supply step of supplying water onto a conveyor and supplying a hydraulic material including cement onto the conveyor;
A cosmetic material spraying step of spraying a cosmetic material without hydrolyzing the surface of the hydraulic material;
And d) adding a cosmetic material to the surface of the cosmetic material.
How to make a building board. In claim 1,
The manufacturing method of the construction board which further includes a cosmetic material pressurization process of pressurizing the surface of the cosmetic material between the cosmetic material dispersion process and the cosmetic material addition process.

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