JP5142576B2 - Extruded plate manufacturing method, extruded plate manufacturing apparatus, and endless mold belt - Google Patents

Description

  The present invention extrudes a kneaded material containing a hydraulic material such as cement from a base part, and forms a concavo-convex pattern on the surface of a green plate that is extruded and molded, for example, an outer wall material, a partition material, a floor material, etc. The present invention relates to an extrusion plate manufacturing method, an extrusion plate manufacturing apparatus, and an endless mold belt that can manufacture an extrusion plate including the building material.

  An example of a conventional extrusion-molded plate manufacturing apparatus is shown in FIG. 9 (see, for example, Patent Document 1). This extrusion plate manufacturing apparatus 1 extrudes a kneaded material containing a hydraulic material such as cement from a base portion 3 of an extrusion molding machine 2, and forms a raw plate 4 which is extruded and molded into an upper synthetic resin. The concavo-convex pattern 7 can be formed on the upper surface of the green plate 4 by being sandwiched between the endless mold belt 5 and the lower conveyer 6 and passing between them. In this way, an extruded cement board including, for example, building materials such as an outer wall material, a partition material, and a flooring material is manufactured by cutting the raw plate 4 having the uneven pattern 7 formed on the surface into a predetermined length. be able to.

The uneven pattern 7 formed on the surface of the extrusion-molded cement board includes, for example, a pattern in which a large number of vertical and horizontal thin grooves are formed in a grid pattern (a grid pattern). It looks like a joint on the surface of the material.
JP 2005-297508 A

  However, in the extruded cement board manufactured by the conventional extrusion board manufacturing apparatus 1 shown in FIG. 9, each linear groove of the joint pattern 7 formed on the upper surface in the state of the raw board 4 is a straight line. The shape may be distorted.

  As described above, the grooves constituting the joint pattern 7 may be distorted when the green plate 4 is pressed against the upper surface of the green plate 4 pushed out from the base 3 when the green plate 4 is pressed. Due to the internal pressure, the molding belt 5 expands or contracts in the extrusion direction 8 and the lateral width direction orthogonal to the extrusion direction 8, and the mold belt 5 is deformed by the expansion or contraction of the green plate 4. This is because the joint pattern 7 distorted on the upper surface of the green plate 4 is formed.

  Further, when the mold belt 5 is running, the mold belt 5 itself may expand and contract in the running direction and the lateral width direction, which causes the mold belt 5 to be deformed. The joint pattern 7 distorted on the upper surface may be formed.

  Therefore, in order to prevent deformation of the mold, it is conceivable to use a metal forming roll. However, in the metal forming roll, the length of the repeated pattern of the uneven pattern 7 such as a joint pattern is shorter than that when the endless mold belt 5 is used, and the uneven pattern 7 becomes monotonous.

  In general, when the material of the mold is made of metal, the uneven pattern 7 such as a joint pattern formed on the surface of the extrusion-molded cement board is compared with the case where the material is made of a relatively soft synthetic resin. There is a problem that the appearance of is inferior. This is presumably because the kneaded material containing a hydraulic material such as cement hardly enters every corner of the concave portion of the metal mold during molding. On the other hand, in the case of a relatively soft synthetic resin mold, it is considered that the kneaded material easily enters every corner of the concave portion of the synthetic resin mold due to its elastic properties.

  As another example of a conventional molding die, a molding surface that comes into contact with the kneaded material is formed with a synthetic resin mold plate portion, and in order to prevent the deformation of the synthetic resin mold plate portion, the mold plate There is one in which a metal reinforcing plate is attached to the lower surface of the part.

  However, if the mold is such that the rigidity is increased by the metal reinforcing plate as described above, the deformation of the mold plate portion can be prevented, but the mold is conveyed to the vicinity of the outlet of the base portion 3 of the extrusion molding machine 2. It is difficult to press against the surface of the green plate 4 pushed out from the base part 3 through the presser roller 9 or the like. That is, for example, as shown in FIG. 9, by inserting the green plate 4 between the endless mold belt 5 and the presser roller 9 and passing the green plate 4 on the surface of the green plate 4 easily and at a relatively high speed, It is desired that the uneven pattern 7 can be formed.

  The present invention has been made in order to solve the above-described problems, and it is possible to form a concavo-convex pattern such as a joint pattern on the surface of an extrusion-molded plate with a good appearance and at a high speed. It aims at providing the manufacturing method of an extrusion-molded board, the manufacturing apparatus of an extrusion-molded board, and an endless mold belt.

According to a first aspect of the present invention, there is provided a method for producing an extrusion-molded plate, wherein a kneaded material containing a hydraulic material is extruded from a base portion, and a mold made of synthetic resin is held on the surface of the green plate that is extruded and molded. In the manufacturing method of an extrusion-molded plate for manufacturing an extrusion-molded plate having a concavo-convex pattern formed on the surface thereof by moving in the extrusion direction of the green plate while being pressed by a roll, the molding die made of the synthetic resin has this molding A flexible thin plate-like reinforcing member is fixedly embedded over the range of the concave / convex pattern mold for molding provided in the mold, and the reinforcing member has many higher rigidity than the concave / convex pattern mold. A metal or synthetic resin sheet having a small hole, or a metal or synthetic resin mesh sheet , and the mold includes a base portion in which the reinforcing member is embedded, and a surface of the base portion In Made that have said uneven pattern mold for molding is, the reinforcing member, characterized in that is provided at a position closer to the concave and convex pattern type than the center in the thickness direction of the base portion is there.

  According to the manufacturing method of the extrusion-molded plate of the invention according to claim 1, the raw plate is extruded while pressing the concave / convex pattern mold of the synthetic resin mold on the surface of the raw plate that is extruded and molded from the die portion. It is possible to produce a green plate on which a concavo-convex pattern is formed. And an extrusion-molded board can be manufactured by cutting the raw board on which the concavo-convex pattern is formed in this way into a predetermined dimension. And, the raw plate extruded from the base part and pressed with the mold on the surface is subjected to a force that expands or contracts in the extrusion direction and the lateral width direction perpendicular to the extrusion direction by the internal pressure. Since the thin plate-like reinforcing member having flexibility is fixed and embedded in the mold for manufacturing over the range of the concavo-convex pattern mold for molding provided in the mold, It is possible to prevent the mold from being deformed by the expansion or contraction force in the extrusion direction and the direction orthogonal thereto. Furthermore, the reinforcing member can also prevent the mold from being deformed when the synthetic resin mold is pressed against the green plate. As a result, for example, lattice-like linear grooves (joint pattern) can be accurately formed on the surface of the raw plate, and as a result, an extruded plate having such a highly accurate joint pattern can be manufactured.

Since the molding die is made of synthetic resin, the kneaded material containing a hydraulic material such as cement can easily enter the concave portion of the concave and convex pattern mold, so that a good-looking concave and convex pattern can be molded on the surface of the extruded plate. it can.
Further, since the reinforcing member is a sheet-like member, it can be easily embedded in a synthetic resin mold, and any portion of the concavo-convex pattern mold can be reinforced with the same level of strength. Therefore, it is possible to effectively reduce the distortion of the uneven pattern type. Further, if the reinforcing member is provided with a large number of small holes or has a mesh structure, the bonding force between the reinforcing member and the synthetic resin mold can be increased, and the mold can be effectively reinforced. Furthermore, the durability of the mold can be improved.
Furthermore, by providing the reinforcing member at a position closer to the concavo-convex pattern mold than the center in the thickness direction of the base portion, the degree of deformation is relatively small when the concavo-convex pattern mold receives a force from, for example, a green plate Can do. Thereby, for example, distortion of the joint pattern can be effectively prevented.

  According to a second aspect of the present invention, there is provided a method for producing an extrusion-molded plate according to the first aspect of the present invention, wherein the mold is an endless mold belt and is pressed against the surface of the green plate that is extruded from the base portion. In this state, the vehicle travels in the same direction at the same speed as the green board. In this way, when the mold is formed as an endless mold belt, the concavo-convex pattern mold can be continuously pressed against the surface of the green plate that is pushed out from the base part while the endless mold belt is running, As a result, it is possible to form an uneven pattern such as a joint pattern on the surface of the green plate with a good appearance and with a high speed.

  According to a third aspect of the present invention, there is provided a method for producing an extrusion-molded plate according to the first aspect of the present invention, wherein the mold is a plate-shaped mold plate and is formed on the surface of the green plate that is extruded from the base portion. The mold plate is removed from the surface of the green plate after being pressed and after a predetermined time has elapsed. In this case, for example, a large number of plate-shaped molds are sequentially pressed against the surface of the green plate that is pushed out from the base, and after each predetermined time has passed, each mold template is pressed from the surface of the green plate. By removing them sequentially, it is possible to form an uneven pattern such as a joint pattern with respect to the surface of the green board with a good appearance, and at a high speed. And since the reinforcing member is fixedly embedded in the mold plate, the reinforcing plate is pressed by the reinforcing member even when the green plate is transferred in a state where the mold plate is pressed against the surface of the green plate. The deformation of the green plate can be suppressed. Therefore, for example, when the raw plate is cured, when the raw plate is not subjected to external force, if the molding template is removed from the raw plate, the green plate and its surface are molded. The deformation of the uneven pattern can be prevented.

According to a fourth aspect of the present invention, there is provided an apparatus for manufacturing an extrusion-molded plate, wherein a kneaded material containing a hydraulic material is extruded from a base portion, and a mold made of a synthetic resin is held on the surface of a green plate that is extruded and molded. In the manufacturing apparatus of the extrusion molding board which manufactures the extrusion molding board in which the concavo-convex pattern was formed on the surface by moving in the extrusion direction of the green board while pressing with a roll, the molding die made of the synthetic resin has this molding A flexible thin plate-like reinforcing member is fixedly embedded over the range of the concave / convex pattern mold for molding provided in the mold, and the reinforcing member has many higher rigidity than the concave / convex pattern mold. A metal or synthetic resin sheet having a small hole, or a metal or synthetic resin mesh sheet , and the mold includes a base portion in which the reinforcing member is embedded, and a surface of the base portion In Made that have said uneven pattern mold for molding is, the reinforcing member, characterized in that is provided at a position closer to the concave and convex pattern type than the center in the thickness direction of the base portion is there.

  Since the extrusion plate manufacturing apparatus of the invention according to claim 4 can manufacture the extrusion plate in the same manner as the method of manufacturing the extrusion plate of the invention according to claim 1, the description thereof is omitted.

  According to a fifth aspect of the present invention, there is provided an apparatus for manufacturing an extrusion-molded plate according to the fourth aspect of the present invention, wherein the mold is an endless mold belt and is pressed against the surface of the green plate extruded from the base portion. In this state, the vehicle travels in the same direction at the same speed as the green board.

  The extrusion plate manufacturing apparatus according to the fifth aspect of the invention operates in the same manner as the extrusion plate manufacturing method according to the second aspect of the invention, so that the description thereof is omitted.

  According to a sixth aspect of the present invention, there is provided an apparatus for manufacturing an extrusion-molded plate according to the fourth aspect of the present invention, wherein the molding die is a plate-shaped molding plate, and is formed on the surface of the raw plate that is extruded from the base portion. The mold plate is removed from the surface of the green plate after a predetermined time has passed.

  The extrusion plate manufacturing apparatus according to the sixth aspect of the invention operates in the same manner as the extrusion plate manufacturing method according to the third aspect of the invention, so that the description thereof is omitted.

  According to a seventh aspect of the present invention, there is provided an apparatus for manufacturing an extruded plate according to any one of the fourth to sixth aspects, wherein the concavo-convex pattern mold has a protrusion for forming a groove in the extruded plate. The protrusions are characterized by being substantially orthogonal to or substantially parallel to the extrusion direction of the green plate that is extruded from the base portion.

  According to the extrusion plate manufacturing apparatus of the invention according to claim 7, the protrusions formed on the concavo-convex pattern mold cause the surface of the green plate to be in a direction substantially perpendicular to the extrusion direction or in a direction substantially parallel to the raw plate surface. A straight groove (joint pattern) can be formed. Therefore, for example, when constructing the outer wall using the outer wall material that is a large number of extrusion-molded plates produced in this way, the joint pattern extending in the vertical and horizontal directions can be made to match substantially exactly, and the appearance is good. An outer wall can be constructed.

The endless mold belt of the invention according to claim 8 is caused to run in the extrusion direction of the green plate while pressing with a presser roll on the surface of the green plate to which the kneaded material containing the hydraulic material is extruded and molded. In the endless mold belt made of synthetic resin for producing an extruded plate having a concavo-convex pattern formed on the surface, a concavo-convex pattern mold for forming a concavo-convex pattern on the green plate is formed on the surface, A flexible thin plate-like reinforcing member is fixed and embedded over the range of the uneven pattern mold, and the reinforcing member is made of a metal having a large number of small holes having rigidity higher than that of the uneven pattern mold or synthetic resin sheet, or a metallic or synthetic resin mesh sheet, further, the endless mold belt includes a base portion to which the reinforcing member is embedded, the base portion And a said uneven pattern mold for molding, which is formed on the surface, the reinforcing member may be provided in a position closer to the concave and convex pattern type than the center in the thickness direction of the base portion Is.

Since the endless mold belt according to the eighth aspect of the invention operates in the same manner as the endless mold belt used in the inventions according to the second and fifth aspects, the description thereof is omitted.

  According to the extrusion plate manufacturing method, the extrusion plate manufacturing apparatus, and the endless mold belt according to the present invention, each linear groove of a joint pattern, for example, formed on the surface of the green plate, is shaped as the linear groove. In this state, it can be formed on the surface of the extruded plate with almost no distortion. Therefore, for example, when the outer wall material which is a large number of extrusion-molded plates manufactured in this way is attached to the base material of the building so as to be aligned vertically and horizontally, the outer wall materials attached adjacent to each other, The straight grooves (joint pattern) extending in the vertical and horizontal directions can be made to coincide with each other almost exactly, so that a good-looking outer wall can be constructed.

  Hereinafter, a first embodiment of an extrusion plate manufacturing method, an extrusion plate manufacturing apparatus, and an endless mold belt according to the present invention will be described with reference to FIGS. This extrusion-molded plate manufacturing apparatus 11 uses an extrusion-molded plate manufacturing method and an endless mold belt. As shown in FIG. 1, hydraulic properties such as cement-based materials, ceramic-based materials, and gypsum-based materials are used. The kneaded material 20 containing the material is extruded from the mouthpiece 13 of the extrusion molding machine 12, and the green plate is pressed while pressing the molding die belt (molding die) 15 made of synthetic resin against the upper surface of the green plate 14 that is extruded and molded. By running in the extruding direction 8 of 14, the long raw plate 14 having the concavo-convex pattern 25 formed on the upper surface can be formed. And this raw board 14 is cut | disconnected to a predetermined dimension, and an extrusion molding board (refer FIG. 5 (a), (b), (c)) 16, 17 or the like after passing through curing and a processing process, or 18 can be manufactured.

  As shown in FIG. 1, the extrusion machine 12 has a pumping unit 19 for pumping a kneaded material 20 such as a hydraulic material such as cement, a reinforcing fiber, and an admixture with a screw, and the tip of the pumping unit 19. A base 13 is attached to the base. The base 13 has a rectangular extrusion opening 13a that is long in the lateral width direction. As a result, the kneaded material 20 containing the uncured hydraulic material extruded from the base 13 is extruded into a green plate 14 having a rectangular cross section.

  As shown in FIG. 4, an inner ball 21 is disposed inside the base portion 13. The inner ball 21 is for forming a hollow portion 14 a inside the green plate 14 that is extruded and molded from the base portion 13. The hollow portion 14 a is formed in a direction parallel to the extrusion direction 8 of the green plate 14. The center ball 21 is attached to a center ball mounting portion (a center ball stay) 22. And as shown in FIG. 4, the conveyance conveyor 23 is arrange | positioned in the back | latter stage of the nozzle | cap | die part 13. As shown in FIG.

  The transport conveyor 23 is, for example, a belt conveyor, and receives the long raw plate 14 sequentially pushed out from the base 13 and transports it to the subsequent stage side. The transport conveyor 23 includes a transport drive roller 23a and a transport driven roller 23b arranged at a predetermined interval, and an endless transport belt 23c is hung on the transport drive roller 23a and the transport driven roller 23b. (See FIG. 1). The conveyance drive roller 23a is configured to be rotationally driven by a drive motor (not shown). A molding device 24 is provided above the conveyor 23.

  As shown in FIG. 1, the molding device 24 presses a synthetic resin molding die belt (molding die) 15 against the upper surface of the green plate 14 that is extruded from the base portion 13 of the extrusion molding machine 12. By running in the extrusion direction 8 of the green plate 14, the uneven pattern 25 can be sequentially formed on the upper surface of the green plate 14. As shown in FIG. 2A, the forming device 24 includes a presser driving roller 24a and a presser driven roller 24b arranged at a predetermined interval, and the presser drive roller 24a and the presser driven roller 24b are provided with the presser drive roller 24a and the presser driven roller 24b. The endless mold belt 15 is hung. The presser drive roller 24a is rotationally controlled by a drive motor (not shown). The material of the mold belt 15 is, for example, urethane-based or silicon-based rubber-based synthetic resin.

  As shown in the partial enlarged oblique perspective view of FIG. 2B (enlarged view of portion A of FIG. 2A), the mold belt 15 has an uneven pattern mold 26 formed on the outer peripheral surface thereof. The concavo-convex pattern mold 26 formed on the mold belt 15 is provided on the upper surface of the raw plate 14, that is, the extrusion-molded plates 16, 17, and 18 shown in FIGS. 5 (a), 5 (b), and 5 (c). , 25, 25 are formed. The concavo-convex patterns 25, 25, 25 formed on the upper surfaces of the extrusion-molded plates 16, 17, 18 have shapes in which the concave and convex portions of the concavo-convex pattern mold 26 formed on the mold belt 15 are reversed. Yes. And, for example, a plurality of concavo-convex pattern molds 26 for forming the concavo-convex pattern 25 of the extrusion molding plate shown in FIG. 5A are formed on the outer peripheral surface of the mold belt 15.

  Then, as shown in FIG. 4, the presser driven roller 24 b is disposed in the vicinity of the extrusion opening 13 a of the base part 13, and presses the mold belt 15 against the upper surface of the green plate 14 pushed out from the base part 13. The concave and convex pattern 25 is formed on the upper surface of the green plate 14. At this time, the mold belt 15 travels in the same direction at the same speed as the extrusion speed of the green plate 14. In addition, as shown in FIG. 4, an inner ball 21 is placed inside the green plate 14 sandwiched between the presser driven roller 24 b and the bottom wall portion 13 b that forms the extrusion opening 13 a of the base portion 13. Has been placed. As a result, it is possible to prevent the hollow portion 14a from being deformed when the mold belt 15 is pressed against the green plate 14, and the concave-convex pattern mold 26 of the mold belt 15 can be cleaned neatly. Can be formed on the upper surface of the substrate.

  Further, as shown in FIG. 2B, the concave-convex pattern die 26 of the mold belt 15 has a large number of first and second protrusions 26a, 26b having a trapezoidal cross-sectional shape formed in a lattice shape. A large number of first and second protrusions 26a and 26b formed in a lattice shape are for forming the uneven pattern 25 of the extrusion-molded plate 16 shown in FIG. 5 (a). However, the 1st protrusion 26a shown in FIG.2 (b) is formed in the direction orthogonal to the extrusion direction 8 of the raw board 14 extruded from the nozzle | cap | die part 13, and the extrusion direction 8 is shown in the same figure. The 2nd protrusion 26b parallel to is not appearing. That is, the first and second protrusions 26a and 26b formed in a lattice shape are for forming grooves on the upper surface of the green plate 14 in a lattice shape, and the lattice-like grooves are like joints. It is a visible joint pattern.

  As shown in FIG. 2B, the mold belt 15 includes a flexible thin plate that covers the entire range of the concavo-convex pattern mold 26 provided on the outer surface of the mold belt 15. A reinforcing member 27 having a shape is fixed and embedded.

The reinforcing member 27 is a sheet-like member with little residual strain against bending. For example, as shown in FIGS. 3A, 3B, or 3C, a mesh sheet 42 made of metal or synthetic resin is used. Alternatively, a metal or synthetic resin sheet 43 having a large number of small holes 43a, or a metal or synthetic resin sheet 44 can be used. The thickness of these reinforcing members 27 is preferably 0.1 to 0.5 mm. The tensile strength of the reinforcing member 27 is 10 times or more the tensile strength (approximately 3 N / mm 2) of urethane rubber, which is the material of the mold belt 15. The linear expansion coefficient of the reinforcing member 27 is preferably less than half the linear expansion coefficient of urethane rubber (about 6 × 10 −5 / ° C.). However, FIG. 3 (c) shows a reference technical example.

  Further, since the reinforcing member 27 is a sheet-like member, it can be easily embedded in the molding die belt 15 made of synthetic resin, and any portion of the concavo-convex pattern die 26 can be reinforced with the same level of strength. Therefore, the distortion of the uneven pattern mold 26 can be effectively reduced. If the reinforcing member 27 is provided with a large number of small holes 43a or has a mesh structure, the bonding force between the reinforcing member 27 and the synthetic resin molding belt 15 can be increased, and the molding belt 15 can be effectively used. Can be reinforced. Furthermore, the durability of the mold belt 15 can be improved.

  Incidentally, the mold belt 15 of this embodiment has a lateral width of about 1,200 mm, a peripheral length of about 5,000 mm, a thickness c of about 25 mm, a thickness a of the base portion 15 a of about 10 mm, and the reinforcing member 27. The thickness is about 0.5 mm, and the height b of the first and second protrusions 26a and 26b is about 15 mm.

  Further, as shown in FIG. 2B, the reinforcing member 27 is provided at a position closer to the concavo-convex pattern mold 26 than the center in the thickness direction of the base portion 15a. Thereby, when the concavo-convex pattern mold 26 receives a force from the raw board 14, for example, the degree of deformation can be made relatively small. Thereby, the distortion of the uneven pattern 25 such as a joint pattern can be effectively prevented.

  In addition, the conveyance speed which conveys the raw board 14 to a back | latter stage with the conveyance conveyor 23, and the running speed of the shaping | molding die belt 15 attached to the shaping | molding apparatus 24 are the extrusion speed of the raw board 14 extruded from the nozzle | cap | die part 13. The speed is controlled to match.

  Next, a procedure for manufacturing the extrusion-molded cement board 16 using the extrusion-plate manufacturing apparatus 11 configured as described above will be described. First, the molding apparatus 24 and the conveyor 23 shown in FIG. 1 are driven, and the extrusion molding machine 12 is operated. When the extrusion molding machine 12 is operated, as shown in FIG. 4, the kneaded material 20 containing a hydraulic material such as cement is extruded from the base part 13, and the long green plate 14 having a rectangular cross section can be sequentially formed. . At this time, the molding device 24 presses the concave / convex pattern die 26 of the synthetic resin molding die belt 15 against the upper surface of the green plate 14 having the hollow portion 14a to be extruded and molded. Is moved in the extrusion direction 8 of the green plate 14, the long green plate 14 with the concave and convex pattern 25 formed on the upper surface can be sequentially formed. And the long raw board 14 in which the uneven | corrugated pattern 25 was shape | molded on the upper surface is conveyed by the back | latter stage by the conveyance conveyor 23. FIG. And this raw board 14 can be cut | disconnected to the predetermined length used as the cut of the pattern of the uneven | corrugated pattern 25, and the extrusion-molded cement board 16 can be manufactured through a curing and a process process.

  According to the extrusion plate manufacturing apparatus 11 and the manufacturing method thereof, as shown in FIG. 4, the green plate 14 extruded from the base portion 13 and pressed against the upper surface of the mold belt 15 is extruded by its internal pressure. A force that expands or contracts in the direction 8 and the lateral width direction orthogonal to the extrusion direction 8 acts, and deformation of the mold belt 15 by this force can be prevented.

  That is, a flexible thin plate-like reinforcing member 27 is fixed to the synthetic resin molding die belt 15 over the entire range of the molding concavo-convex pattern die 26 provided on the molding die belt 15. Therefore, the molding belt 15 and the first and second protrusions 26a and 26b are prevented from being deformed by the expansion or contraction force in the extrusion direction 8 of the green plate 14 and the direction orthogonal thereto. can do. Furthermore, the reinforcing member 27 can also prevent the molding die belt 15 from being deformed when the synthetic resin molding die belt 15 is pressed against the green plate 14.

  Thereby, for example, a grid-like linear groove having a joint pattern (uneven pattern 25) can be accurately formed on the upper surface of the raw board 14, and as a result, the extruded cement board 16 having such a highly accurate joint pattern. Can be manufactured.

  Therefore, for example, when a large number of extrusion-molded cement boards 16 manufactured in this way are attached to the base material of the building as the outer wall material in the vertical and horizontal directions, they are attached adjacent to each other. It is possible to match the straight grooves (joint pattern) extending in the vertical and horizontal directions of the outer wall material that are close to each other almost exactly, and it is possible to construct a good-looking outer wall.

  Further, since the mold belt 15 is made of a synthetic resin, the kneaded material 20 containing a hydraulic material such as cement easily enters the concave portion of the concave-convex pattern mold 26 of the mold belt 15. The concavo-convex pattern 25 having a good appearance can be formed.

  Further, as shown in FIG. 4, the concave / convex pattern die 26 of the molding die belt 15 is successively and continuously applied to the upper surface of the green plate 14 pushed out from the base portion 13 while the molding die belt 15 is traveling in a predetermined direction. Since it can be pressed, the concave / convex pattern 25 such as a joint pattern can be formed on the upper surface of the raw plate 14 with a good appearance and at a high speed.

  Next, with reference to FIG. 6 (a), (b), about the precision of the grid-like joint pattern (unevenness pattern 25) formed in the upper surface of the extrusion-molded cement board 16, the extrusion-molded board of 1st Embodiment. Extruded cement board 16 manufactured using the manufacturing apparatus 11 of the present invention and an extruded cement board of a comparative example manufactured using an extruded board manufacturing apparatus not provided with a reinforcing member 27 are compared. To do.

  The difference between the extruded plate manufacturing apparatus 11 of the first embodiment and the extruded plate manufacturing apparatus (comparative example manufacturing apparatus) for manufacturing the extruded cement plate of the comparative example is shown in FIG. ), The reinforcing member 27 is embedded in the mold belt 15 of the extrusion plate manufacturing apparatus 11 of the first embodiment, whereas such a reinforcement is provided in the manufacturing apparatus of the comparative example. The member 27 is not buried, and the rest is the same.

  Incidentally, the material of both mold belts is urethane rubber, the lateral width is about 1,200 mm, the peripheral length is about 5,000 mm, the thickness c is about 25 mm, the base portion thickness a is about 10 mm, and the reinforcement is made. The thickness of the member 27 is about 0.5 mm, and the height b of the first and second protrusions 26a, 26b is about 15 mm. And the reinforcing member 27 is the metal sheet | seat 43 which has many small holes (circular hole) 43a shown in FIG.3 (b), and is a product made from a steel plate about 0.3 mm thick. The diameter of the small hole 43a is about 3 mm, and the aperture ratio of the small hole 43a is about 32%. The manufactured extruded cement board has a width of about 1,000 mm and a length of about 3,000 mm.

  6 (a) and 6 (b) compare the dimensional accuracy of the grid-like joint pattern formed on the upper surface of the extruded cement board 16 manufactured by the manufacturing apparatus 11 of the first embodiment and the manufacturing apparatus of the comparative example. It is a figure for doing. The grid-like joint pattern formed on the upper surface of the extruded cement plate 16 shown in FIG. 6A is as shown in FIG. In this grid-like joint pattern, a large number of quadrangular pyramid trapezoidal protrusions are formed on the upper surface of the extruded cement board 16.

  The variation of the joint pattern pitch in the vertical directions A and E shown in FIG. 6B is the variation of the interval between the points A and E shown in FIG. In the example, it is ± 1.0 mm, and in the comparative example, it is ± 4.0 mm. The variation in the horizontal direction C and F of the joint pattern pitch is a variation with respect to a specified value of 1,000 mm of the interval between the point C and the point F shown in FIG. In the comparative example, it is ± 1.5 mm.

  The variation in the vertical direction C and D of the linearity of the joint pattern shown in FIG. 6B is a variation in deviation between the point C and the point D (interval is 3,000 mm) shown in FIG. In the example, it is ± 1.0 mm, and in the comparative example, it is ± 2.0 mm. The variation in the horizontal direction A and B of the joint pattern linearity is a variation in deviation between the point A and the point B (interval is 1,000 mm) shown in FIG. In the comparative example, it is ± 1.0 mm.

  As described above, in the embodiment, the variation in joint pattern pitch and joint pattern linearity can be extremely reduced as compared with the comparative example.

  Next, a second embodiment of the extrusion plate manufacturing method and the extrusion plate manufacturing apparatus according to the present invention will be described with reference to FIGS. The extrusion plate manufacturing apparatus 37 of the second embodiment shown in FIGS. 7 and 8 uses the method of manufacturing an extrusion plate, and the extrusion plate of the first embodiment shown in FIGS. 1 and 2. The difference from the manufacturing apparatus 11 is that the molding apparatuses 38 and 24 are different.

  That is, the extrusion plate manufacturing apparatus 37 according to the second embodiment shown in FIGS. 7 and 8 extrudes the kneaded material 20 containing a hydraulic material such as cement from the base portion 13 of the extrusion molding machine 12, and is extruded. While pressing a flexible synthetic resin molding plate (molding die) 40 formed to a predetermined length on the upper surface of the green plate 14 to be molded, the raw plate 14 is fed in the extrusion direction 8, At the same time, the long raw plate 14 on which the molding template 40 is pressed and placed can be sequentially cut into the length dimension of the molding template 40.

  As shown in FIG. 7, the molding device 38 presses a flexible synthetic resin molding template 40 onto the upper surface of the green plate 14 that is extruded from the die 13 of the extruder 12 and molded. However, by feeding the raw plate 14 in the pushing direction 8, the concave / convex pattern 25 can be sequentially formed on, for example, the upper surface of the raw plate 14. The molding device 38 includes a presser drive roller 24a, and the presser drive roller 24a is configured to be rotationally driven by a drive motor (not shown). Then, as shown in FIG. 7, the presser drive roller 24 a is disposed in the vicinity of the extrusion opening 13 a of the base part 13, and presses the molding template 40 against the upper surface of the raw plate 14 pushed out from the base part 13. The concave and convex pattern 25 is formed on the upper surface of the green plate 14. At this time, the mold template 40 is sent out at the same speed as the extrusion speed of the green board 14.

  As shown in the partially enlarged oblique perspective views of FIGS. 8A and 8B, the mold plate 40 is equivalent to the concavo-convex pattern mold 26 formed on the outer peripheral surface of the mold belt 15 of the first embodiment. An uneven pattern mold 26 is formed on one surface thereof. The molding template 40 is formed to have substantially the same dimensions as the extrusion-molded cement plate 16, and the material of the molding template 40 is, for example, urethane-based or silicon-based rubber-based synthetic resin.

  Further, as shown in FIG. 8B (FIG. 8B is an enlarged view of a portion B in FIG. 8A), the mold belt 15 of the first embodiment is formed on the surface of the mold plate 40. Similarly, a large number of first and second protrusions 26a and 26b having a trapezoidal cross-sectional shape are formed in a lattice shape, and the reinforcing member 27 is embedded in the base portion 15a in a fixed state.

  Although not shown in the drawing, the extrusion plate manufacturing apparatus 37 is provided with a cutting machine for cutting the raw plate 14 into a predetermined length. According to this cutting machine, the long raw plate 14 on which the mold plate 40 is pressed and placed can be sequentially cut to the length of the mold plate 40. The raw plate 14 cut in this way is a rectangular plate-like body, and the mold plate 40 is pressed and placed on the upper surface thereof. Since other than this is equivalent to the molding apparatus 11 of the first embodiment shown in FIG. 1, the same parts are denoted by the same reference numerals, and detailed description thereof is omitted.

  Next, a procedure for manufacturing the extrusion-molded cement board 16 using the extrusion-plate manufacturing apparatus 37 configured as described above will be described. First, similarly to the first embodiment, the molding apparatus 38 and the transport conveyor 23 shown in FIG. 7 are driven to operate the extrusion molding machine 12. When the extrusion molding machine 12 is operated, the kneaded material 20 containing a hydraulic material such as cement is extruded from the base part 13, and the long green plate 14 having a rectangular cross section can be sequentially formed. Then, as shown in FIG. 7, by automatically inserting a molding die 40 between the presser drive roller 24a and the green plate 14 at a predetermined timing, the hollow portion 14a that is extruded and molded is inserted. While pressing the concave / convex pattern mold 26 of the synthetic resin mold 40 on the upper surface of the green board 14, the mold 40 can be sent out in the extrusion direction 8 of the green board 14.

  Then, the long raw plate 14 placed with the mold plate 40 pressed against the upper surface is sequentially cut into a predetermined length by the cutting machine, and the raw plate 14 having a predetermined length can be manufactured. The raw board 14 cut to a predetermined length is conveyed to the subsequent stage by the conveyor 23. Further, the raw plate 14 cut to a predetermined length is sent out from the conveyor 23 and sent out above a receiving plate (not shown) arranged in the subsequent stage. And when the raw board 14 is sent out above this receiving board, it removes from the shaping | molding die board 40, and is moved on a receiving board. The raw board 14 placed on the receiving board is subjected to a curing process and a processing process, and an extruded cement board 16 is manufactured. Then, as shown in FIG. 7, the forming mold plate 40 from which the raw plate 14 has been removed is conveyed to the forming device 38 and sent out by the press drive roller 24a in the same manner as described above. The fed mold template 40 is used to form a concavo-convex pattern 25 such as a joint pattern on the upper surface of the next green plate 14.

  In this way, when the green plate 14 cut to a predetermined size is conveyed by the conveyor 23 and transferred to the upper surface of the receiving plate, the molding template 40 is pressed against the upper surface of the raw plate 14. It is placed. A reinforcing member 27 is embedded in the mold template 40. Therefore, until the green plate 14 is pushed out from the base 13 and before it is placed on the upper surface of the receiving plate, the forming die 8 is pushed by the force of expanding or contracting in the pushing direction 8 and the direction perpendicular thereto. It is possible to prevent the plate 40, that is, the first and second protrusions 26a and 26b from being deformed.

  Then, after the raw plate 14 is placed on the receiving plate, the mold plate 40 is detached from the raw plate 14, but the raw plate 14 is placed on the receiving plate until the curing process is completed. In addition, since the raw plate 14 itself is not delivered, the possibility that the raw plate 14 and the concavo-convex pattern 25 formed on the upper surface thereof are deformed is extremely low.

  As a result, for example, a grid-like linear groove having a joint pattern can be accurately formed on the upper surface of the green plate 14, and as a result, the extruded cement board 16 having such a precise joint pattern can be easily obtained. It can be manufactured at high speed.

  Therefore, for example, when the outer wall material, which is a large number of extruded cement plates 16 manufactured in this way, is attached to the base material of a building so as to be aligned vertically and horizontally, the outer wall material attached adjacent to each other. The straight grooves (joint pattern) extending in the vertical and horizontal directions can be made to match substantially exactly, and an external wall having a good appearance can be constructed.

  However, in the first and second embodiments, as shown in FIG. 4, the green plate 14 having the hollow portion 14 a is formed by providing the center ball 21. The green board 14 in which the part 14a is not formed can be formed.

  As described above, the extrusion plate manufacturing method and the extrusion plate manufacturing apparatus according to the present invention form a concavo-convex pattern such as a joint pattern on the surface of the extrusion plate with a good appearance and at a high speed. It has an excellent effect that can be achieved, and is suitable for application to such a method for producing an extruded plate and an apparatus for producing an extruded plate.

It is a perspective view which shows the manufacturing apparatus of the extrusion molding board which concerns on 1st Embodiment of this invention. It is a figure which shows the shaping | molding apparatus provided in the manufacturing apparatus which concerns on the same 1st Embodiment, (a) is a perspective view of a shaping | molding apparatus, (b) is the elements on larger scale which show the reinforcement member of a shaping | molding die belt. is there. It is a partial enlarged perspective view showing an example of a reinforcing member of the mold belt according to the first embodiment, (a) is a metal mesh sheet, (b) is a metal sheet having a large number of small holes , (C) is a synthetic resin or metal sheet of a reference technical example . It is a partial expanded sectional view which shows the manufacturing apparatus which concerns on the 1st Embodiment. It is a top view of the extrusion-molded cement board manufactured by the manufacturing apparatus which concerns on the same 1st Embodiment, (a) is a top view of a 1st extrusion-molded cement board, (b) is a plane of a 2nd extrusion-molded cement board. FIG. 4C is a plan view of a third extruded cement board. It is a figure for demonstrating the shaping | molding precision of the extrusion-molded cement board manufactured by the manufacturing apparatus which concerns on the same 1st Embodiment, (a) is a schematic top view of an extrusion-molded cement board, (b) is an extrusion-molded cement. It is a figure which shows the dimension dispersion | variation of each part of a board. It is a perspective view which shows the manufacturing apparatus of the extrusion molding board which concerns on 2nd Embodiment of the same invention. It is a figure which shows the shaping | molding die plate provided in the manufacturing apparatus which concerns on the said 2nd Embodiment, (a) is a perspective view of a shaping die plate, (b) is the partial expansion perspective view which shows the reinforcement member of a shaping die plate. FIG. It is a perspective view which shows the manufacturing apparatus of the conventional extrusion molding board.

Explanation of symbols

DESCRIPTION OF SYMBOLS 8 Extrusion direction 11, 37 Extrusion board manufacturing apparatus 12 Extruder 13 Cap part 13a Extrusion opening part 13b Bottom wall part 14 Raw plate 14a Hollow part 15 Mold belt 16, 17, 18 Extrusion cement board 19 Pressure sending part 20 Kneaded material 21 Inner ball 22 Inner ball mounting portion 23 Conveyor 23a Conveying drive roller 23b Conveying driven roller 23c Conveying belt 24, 38 Molding device 24a Presser driving roller 24b Pressing driven roller 25 Concave and convex pattern of green plate 26 Concave and convex pattern of mold belt Mold 26a 1st protrusion 26b 2nd protrusion 27, 41, 42, 43 Reinforcement member 32 Base 40 Molding template

Claims (8)

By extruding a kneaded material containing a hydraulic material from the base part and moving it in the extrusion direction of the green plate while pressing a synthetic resin mold with a presser roll on the surface of the green plate to be extruded and molded In the manufacturing method of an extrusion-molded plate for manufacturing an extrusion-molded plate having a concavo-convex pattern formed on the surface,
In the synthetic resin mold, a flexible thin plate-like reinforcing member is fixed and embedded over the range of the concave / convex pattern mold for molding provided in the mold,
The reinforcing member is a metal or synthetic resin sheet having a large number of small holes having rigidity higher than that of the concavo-convex pattern type, or a metal or synthetic resin mesh sheet ,
The molding die has a base portion in which the reinforcing member is embedded, and the concavo-convex pattern die for molding formed on the surface of the base portion,
The method for manufacturing an extrusion-molded board, wherein the reinforcing member is provided at a position closer to the concave-convex pattern mold than a center in a thickness direction of the base portion .   The mold is an endless mold belt, and travels in the same direction at the same speed as the green plate while being pressed against the surface of the green plate being pushed out from the base portion. The manufacturing method of the extrusion molding board of Claim 1.   The molding die is a plate-shaped molding die, and is pressed against the surface of the green plate pushed out from the base part, and after a predetermined time has elapsed, the molding die is removed from the surface of the green plate. The method for producing an extruded plate according to claim 1, wherein By extruding a kneaded material containing a hydraulic material from the base part and moving it in the extrusion direction of the green plate while pressing a synthetic resin mold with a presser roll on the surface of the green plate to be extruded and molded In an extrusion plate manufacturing apparatus for manufacturing an extrusion plate having a concavo-convex pattern formed on the surface,
In the synthetic resin mold, a flexible thin plate-like reinforcing member is fixed and embedded over the range of the concave / convex pattern mold for molding provided in the mold,
The reinforcing member is a metal or synthetic resin sheet having a large number of small holes having rigidity higher than that of the concavo-convex pattern type, or a metal or synthetic resin mesh sheet ,
The molding die has a base portion in which the reinforcing member is embedded, and the concavo-convex pattern die for molding formed on the surface of the base portion,
The said reinforcement member is provided in the position close | similar to the said uneven | corrugated pattern type | mold rather than the center of the thickness direction of the said base part, The manufacturing apparatus of the extrusion molding board characterized by the above-mentioned .   The mold is an endless mold belt, and travels in the same direction at the same speed as the green plate while being pressed against the surface of the green plate being pushed out from the base portion. The manufacturing apparatus of the extrusion-molded board of Claim 4.   The mold is a plate-shaped mold, and is pressed against the surface of the green plate that is pushed out from the base, and after a predetermined time has elapsed, the mold plate is removed from the surface of the green plate. The manufacturing apparatus of the extrusion molding board of Claim 4 characterized by these.   The concavo-convex pattern mold has a ridge for forming a groove in the extruded plate, and the ridge is substantially orthogonal to or substantially perpendicular to the extrusion direction of the green plate extruded from the base part. The apparatus for manufacturing an extrusion-molded plate according to any one of claims 4 to 6, wherein the apparatus is parallel. An extruded plate having a concavo-convex pattern formed on its surface by running in the extrusion direction of the green plate while pressing it with a presser roll onto the surface of the green plate that is extruded and molded with a kneaded material containing a hydraulic material. In an endless mold belt made of synthetic resin for manufacturing ,
A concavo-convex pattern mold for forming a concavo-convex pattern on the green plate is formed on the surface, and a flexible thin plate-like reinforcing member is fixed and embedded over the range of the concavo-convex pattern mold,
The reinforcing member is a metal or synthetic resin sheet having a large number of small holes having rigidity higher than that of the concavo-convex pattern type, or a metal or synthetic resin mesh sheet ,
The endless mold belt includes a base portion in which the reinforcing member is embedded, and the uneven pattern mold for molding formed on the surface of the base portion,
The endless molding die belt , wherein the reinforcing member is provided at a position closer to the concavo-convex pattern die than a center in a thickness direction of the base portion .

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