JP2016182743A - Mold - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a mold for improving molding ability.SOLUTION: A mold (1) of the invention is a mold on which a molded body material (30) is installed and which performs vertical lamination molding, and the mold comprises: a bottom wall part (11); and a side wall part (12) continuous to the bottom wall part (11). A lower face side of the bottom wall part (12) comprises a recess part (13) for releasing the molded body material (30) installed on a lower stage. The mold (1) preferably further comprises an inner frame which is disposed on an inner peripheral face (10b) of the bottom wall part (11) and the side wall part (12), and which comprises a bottom part (21), a side part (22) continuous to the bottom part (21), and a flange part (23) continuous to the side part (22) and extending outward.SELECTED DRAWING: Figure 7

Description

  The present invention relates to a formwork, and more particularly to a formwork for forming a molded body material and vertically forming it in the vertical direction.

  Conventionally, in order to produce a molded plate such as concrete, the material of the molded plate is placed on a mold and cured. JP-A-5-4210 (Patent Document 1), JP-A-2001-315112 (Patent Document 2), and the like can be cited as techniques for manufacturing a molded plate by laminating mold frames in the vertical direction. Patent Document 1 discloses that a concrete block is manufactured by stacking and curing molds filled with ready-mixed concrete. Patent Document 2 discloses an assembly type in which a plurality of molding spaces are formed by a mold frame including a molding base plate, a column body erected on the molding base plate, and a frame plate attached to the column body. A formwork is disclosed.

Japanese Patent Laid-Open No. 5-4210 JP 2001-315112 A

  If it is a general concrete material, even if it uses a formwork like patent documents 1 and 2, the influence on formability is small, but when specific material is cast, formability is bad. The present inventors have found a new problem.

  This invention makes it a subject to provide the formwork which improves a moldability.

  The problem of poor formability when a specific material is placed is that the surface when a general concrete material is filled into a mold is a flat surface, whereas a highly viscous material is a mold. The inventor has found that the surface of the frame when it is placed is caused by the rise. Therefore, the present inventor has completed the present invention as a result of earnestly researching a mold that can improve moldability even when a highly viscous material is cast.

  In other words, the mold of the present invention is a mold for casting a molded body material and vertically stacking in the vertical direction, and includes a bottom wall part and a side wall part connected to the bottom wall part. On the lower surface side of the bottom wall portion, there is formed a recess for allowing the molded material placed in the lower stage to escape.

  According to the mold of the present invention, even if the surface of the cast molded material is raised, it is pressed by the mold stacked in the upper stage, and the molded material for the portion thicker than the desired thickness is It moves to a recess formed in the bottom wall of the mold located on the upper stage. For this reason, since the molded object of desired thickness can be manufactured, a moldability can be improved.

  Preferably, in the mold of the present invention, the recess includes an outer peripheral groove formed along the outer periphery of the bottom wall portion. Thereby, since an excess molded object material can be escaped to the outer peripheral side, since the influence on a molded object becomes small, a moldability can be improved more.

  Preferably, in the mold according to the present invention, the concave portion further includes a plurality of burr forming grooves extending from the respective positions of the outer peripheral groove toward the center side. The molded body material that has escaped into the burr forming groove becomes a burr of the molded body, but since this burr can be easily removed, the moldability can be further improved.

  In the mold of the present invention, preferably, the recess is formed point-symmetrically with respect to the center. Thereby, since an excess molding material can be discharged | emitted uniformly, a moldability can be improved more.

  In the mold according to the present invention, preferably, the lower end of the side wall portion is configured to be engaged with the upper end of the side wall portion located in the lower stage. Thereby, a some formwork can be stacked vertically easily.

  Preferably, the mold according to the present invention includes a bottom part, a side part connected to the bottom part, and a flange part connected to the side part and extending outward. An inner frame is further provided. As a result, it is easy to take out a molded body that is cast on the inner frame and molded. Moreover, it can prevent that a molded object material flows into the clearance gap formed by arrange | positioning an inner frame with a flange part.

  In the mold of the present invention, the inner frame is preferably a vacuum formed sheet. Thereby, the surface of the inner frame has high smoothness, and the molded body material is placed on the surface having high smoothness, so that the moldability can be further improved.

  In the mold of the present invention, preferably, the surface in contact with the molded body material is formed of a resin. Molded materials such as concrete and silicate polymer can be further improved in moldability since they have high mold release properties from the resin.

  Preferably, in the mold according to the present invention, the molded body material includes an aggregate having a ceramic siding waste, an aluminosilicate, and an alkali silica solution. As a result of earnestly researching means for using ceramics siding waste for the purpose of reducing the environmental load, the present inventor has made ceramics siding waste as an aggregate to a polymer containing an aluminosilicate and an alkali silica solution. It has been found that a silicate polymer molding can be realized by mixing. The mold of the present invention is suitably used for the vertical stack molding of this novel silicate polymer molded body.

  According to the mold of the present invention, moldability can be improved.

It is sectional drawing which shows schematically the formwork in embodiment of this invention, and respond | corresponds to sectional drawing along the II line in FIG.2 (D). BRIEF DESCRIPTION OF THE DRAWINGS The outer mold form which comprises the mold form in embodiment of this invention is shown schematically, (A) is a top view, (B) is a side view, (C) is sectional drawing, (D ) Is a bottom view. It is a bottom view which shows roughly the formwork in the modification of embodiment of this invention. It is a perspective view which shows roughly the inner mold frame which comprises the mold frame in embodiment of this invention. The internal mold which comprises the mold in embodiment of this invention is shown schematically, (A) is a top view, (B) is sectional drawing. It is sectional drawing which shows the state which attaches the outer form frame which comprises the mold form in embodiment of this invention, and an internal mold form schematically, and respond | corresponds to sectional drawing along the II line in FIG.2 (D) To do. It is sectional drawing which shows the state which manufactures a molded object using the formwork in embodiment of this invention schematically, (A) respond | corresponds to sectional drawing along the VIIA-VIIA line | wire in FIG.2 (D). (B) corresponds to a cross-sectional view taken along the line VIIB-VIIB in FIG. It is a perspective view which shows the inner formwork of a comparative example roughly. FIG. 9 is a plan view schematically showing a state after molding material is placed on the inner mold of FIG. 8.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following drawings, the same or corresponding parts are denoted by the same reference numerals, and description thereof will not be repeated.

  With reference to FIGS. 1-7, the formwork of one Embodiment of this invention is demonstrated. As shown in FIG. 1, the mold 1 of the present embodiment is a mold for casting a molded body material 30 and vertically stacking in the vertical direction, and includes an outer mold 10 and the outer mold. An inner mold frame (inner frame) 20 detachably attached to the inside of the frame 10 is provided.

  As shown in FIG. 2, the outer mold frame 10 includes a bottom wall portion 11 and a side wall portion 12 that is continuous with the bottom wall portion 11. The bottom wall portion 11 and the side wall portion 12 may be integrally molded, or may be connected with different members.

  As shown in FIG.1 and FIG.2, the bottom wall part 11 is a flat plate, Although the shape in planar view is not specifically limited, For example, it is a rectangle, circular, etc. The bottom wall portion 11 has a shape that is in close contact with the upper surface of the molded body material 30 that is placed on the mold 1 located on the lower stage, and the molded body that is placed on the lower stage on the lower surface 11a side of the bottom wall section 11. A recess 13 for releasing the material is formed. The recess 13 is a relief groove for receiving an excessive molding material. For this reason, when forming a molded object vertically using the mold 1, the excessive molding material may not flow into a part of the recessed part 13, but a part of the recessed part 13 may become a space | gap. The concave portion 13 is formed point-symmetrically with respect to the center O in order to allow excess molding material to escape uniformly.

  The recess 13 includes an outer peripheral groove 14 and a burr forming groove 15 as shown in FIGS. 1 and 2B to 2D. When the bottom wall portion 11 is rectangular in a plan view, the outer peripheral groove 14 is a step portion formed on the four sides of the lower surface 11a, and the burr forming groove 15 is a groove portion protruding inward from a plurality of positions on the four sides. is there.

  The outer peripheral groove 14 is a step portion formed at the outer peripheral end on the lower surface 11 a of the bottom wall portion 11, and forms a groove with the side wall portion 12 of the mold 1 located in the lower step. The outer peripheral groove 14 is formed on the entire outer periphery when viewed from the lower surface 11a.

  A plurality of burr forming grooves 15 extend from each of a plurality of predetermined positions of the outer circumferential groove 14 toward the center O side in a row with the outer circumferential groove 14. The predetermined positions are positions that are spaced at substantially equal intervals on the sides of the outer circumferential groove 14. As shown in FIG. 2 (D), when viewed from below, the outer peripheral edge and the inner peripheral edge of the outer peripheral groove 14 are rectangular, and for burr formation so that each side of the inner peripheral edge of the outer peripheral groove 14 is substantially perpendicular. Each of the grooves 15 extends. When viewed from below, the burr forming groove 15 may have a rectangular shape as shown in FIG. 2D, or may have a tapered shape as shown in FIG. In the case of FIG. 3, burrs formed on the molded body are very easy to remove.

  A side wall 12 is provided so as to stand upward from the outer peripheral end of the bottom wall 11. Note that the boundary between the side wall portion 12 and the bottom wall portion 11 is indicated by a dotted line in FIG. As shown in FIG. 1, the side wall portion 12 includes a first wall surface 12a extending upward from the upper surface 11b of the bottom wall portion 11, and a second wall surface extending from the upper end of the first wall surface 12a to the outer peripheral side. A wall surface 12b, a third wall surface 12c extending upward from the second wall surface 12b, a fourth wall surface 12d extending outward from the third wall surface 12c, and an outer periphery of the bottom wall portion 11 And a fifth wall surface 12e extending from the end to the outer peripheral side. The first wall surface 12a supports the molded body material from the side. The 2nd wall surface 12b and the 3rd wall surface 12c comprise the outer periphery groove | channel 14 with the recessed part formed in the outer peripheral end of the bottom wall part 11 of the outer mold frame 10 which comprises the mold 1 located in the upper stage. The fourth wall surface 12 d is the upper surface of the side wall portion 12, and the fifth wall surface 12 e is the lower surface of the side wall portion 12.

  The lower end (fifth wall surface 12e in FIG. 1) of the side wall portion 12 is configured to be engaged with the upper end (fourth wall surface 12d in FIG. 1) of the side wall portion 12 located in the lower stage. In the present embodiment, the step formed by the third wall surface 12c and the fourth wall surface 12d has the fifth wall surface 12e and the bottom wall portion 11 which are the lower surfaces of the side wall portions 12 of the mold located on the upper stage. Is engaged with the step formed by

  Here, an example of specific dimensions of the outer mold 10 is given. As shown in FIG. 2A, the bottom wall 11 is rectangular (square in FIG. 2) in plan view, the side X is 300 mm, and the side Y is 300 mm. As shown in FIG. 2B, the thickness U of the bottom wall portion 11 is 10 mm, the thickness V from the upper surface of the bottom wall portion 11 to the second wall surface 12b of the side wall portion 12 is 30 mm, The thickness W from the wall surface 12b to the fourth wall surface 12d as the upper surface is 10 mm.

  As shown in FIG. 1, an inner mold 20 is disposed on the inner wall 10 b of the bottom wall 11 and the side wall 12 of the outer mold 10. As shown in FIGS. 4 and 5, the inner mold frame 20 includes a bottom portion 21, a side portion 22 that is continuous with the bottom portion 21, and a flange portion 23 that is continuous with the side portion 22 and extends outward. .

  The inner mold frame 20 is configured to be fitted to the outer mold frame 10. That is, the outer peripheral surface of the inner mold frame 20 has a shape along the inner peripheral surface 10 b of the outer mold frame 10. Specifically, the outer peripheral surface of the bottom portion 21 of the inner mold frame 20 has a shape along the inner peripheral surface (the upper surface 11b in FIG. 1) of the bottom wall portion 11 of the outer mold frame 10, and the inner mold frame 20 side. The outer peripheral surface of the portion 22 is shaped along the first wall surface 12 a of the side wall portion 12 of the outer mold frame 10, and the lower surface of the flange portion 23 of the inner mold frame 20 is the first shape of the side wall portion 12 of the outer mold frame 10. 2 along the wall surface 12b.

  The inner mold 20 is a vacuum formed sheet. Vacuum forming is a method of forming a sheet into a shape that matches a mold using only one of a female mold and a male mold. The sheet is preferably a resin sheet (resin plate). In addition, the sheet | seat has the intensity | strength of the grade which supports the molded object by which the molded object material was cast and hardened | cured. Specifically, after heat-softening the sheet, the gap between the mold and the sheet is reduced, the sheet is brought into close contact with the mold, and air is blown after cooling to obtain the inner mold frame 20. By matching the outer peripheral surface to the mold, the smoothness of the inner peripheral surface 20b of the inner mold frame 20 is increased. In the present embodiment, the inner peripheral surface 20 b of the inner mold frame 20 has higher smoothness than the inner peripheral surface 10 b of the outer mold frame 10. Since the inner peripheral surface of the bottom 21 of the inner mold frame 20 is a surface that forms the surface of the molded body, the smoothness of the surface of the molded body can be improved, and mirror finishing is also possible. In addition, characters, patterns, and the like may be formed on the inner mold frame 20.

  In the outer mold frame 10 and the inner mold frame 20, the surface in contact with the molded body material is formed of resin, and the outer mold frame 10 and the inner mold frame 20 are preferably made of resin. The resin is not particularly limited, but it is preferable to use a resin that has good releasability from the molded body material. For example, polypropylene, ABS resin, or the like can be used. When the mold is made of resin, the workability can be improved because it is lightweight. The outer mold 10 and the inner mold 20 are not limited to resin, and all or a part of the portion not in contact with the molded body material may be metal, wood, or the like.

  The molding material to be placed on the mold 1 is not particularly limited, and any material such as a concrete material or a silicate polymer molding material can be used, and a highly viscous material is preferably used. A highly viscous material is a material whose surface rises as shown in FIG. Examples of such a material include a high-strength concrete material, an aggregate having a ceramic siding waste material, a silicate polymer molded material containing an aluminosilicate and an alkali silica solution.

  Here, the material of the silicate polymer molded body containing the aggregate having the ceramic siding waste, the aluminosilicate, and the alkali silica solution will be described. The material of this silicate polymer molding is a novel material found by the present inventor, in which an aggregate containing ceramic siding waste, an aluminosilicate, and an alkali silica solution are mixed.

  The aggregate has a role of increasing the bulk, and is not particularly limited as long as it contains ceramic siding waste, and may contain other materials or may be made of ceramic siding waste. Other materials are not particularly limited, and for example, ceramics, tiles, calcium silicate products, concrete products, wood, sand, gravel, clay and the like can be used, and waste materials are preferable.

  Aluminosilicate and alkali silica solutions are constituents of the polymer and act as binders.

  Although aluminosilicate is not specifically limited, For example, kaolinite, bentonite, etc. can be used, It is preferable that it is a semi-baked state with high reactivity, such as metakaolin which carried out the semi-baking of the clay (kaolin).

  The alkali silica solution is not particularly limited, and is an alkali silicate solution. For example, sodium silicate, potassium silicate, lithium silicate, or the like can be used.

  From the viewpoint of improving moldability, aggregate: aluminosilicate: alkali silica solution = (3.0 to 3.8): (1.0 to 0.3): 1.0, (1.8 to 2.8 ): (1.2-0.2): 1.0, (1.0-2.2): (1.3-0.2): 1.0 and (0.3-0.5): (1.3 to 1.0): It is preferably mixed at a mass ratio of 1.0, and from the viewpoint of increasing the strength of the molded body, aggregate: aluminosilicate: alkali silica solution = (3 .0 to 3.5): (1.0 to 0.5): 1.0, (1.8 to 2.6): (1.2 to 0.4): 1.0, (1.0 1.7): (1.3-0.7): 1.0 and (0.3-0.5): (1.3-1.0): 1.0 More preferably, they are mixed in a ratio.

  In addition, the material of the silicate polymer molded body has a total mass ratio of the aggregate and the aluminosilicate of 1.5 to 4.0 when the mass ratio of the alkali silica solution is 1.0. And the ratio of the mass ratio of the aluminosilicate is preferably 0.2 or more and 1.3 or less, and the total ratio of the mass ratio of the aggregate and the aluminosilicate is 1.5 or more and 4.0 or less. More preferably, the mass ratio of the aluminosilicate is 0.4 or more and 1.3 or less.

  Then, the method to shape | mold a molded object material using the formwork 1 of this Embodiment is demonstrated. In the present embodiment, a mold plate is manufactured using the mold 1.

  First, the outer mold 10 shown in FIG. 2 or 3 and the inner mold 20 shown in FIGS. 4 and 5 are prepared. As shown in FIG. 6, the bottom wall 11 and the side wall of the outer mold 10 are prepared. The inner mold frame 20 is attached to the 12 inner peripheral surfaces 10b. Thereby, the formwork 1 shown in FIG. 1 can be prepared.

  Next, as shown in FIG. 1, a molded body material 30 is placed inside the mold 1. When the molded body material 30 is a material of a silicate polymer molded body including an aggregate having ceramics-based siding waste, an aluminosilicate, and an alkali silica solution, for example, the aggregate and the aluminosilicate using a kneading mixer or the like. Are mixed, and then an alkali silica solution is added and mixed. At the time of placing, the surface is oscillated by shaking with a shaking table to flatten the surface. When at least a part of the mold 1 is made of resin, the weight is very light compared to the metal mold, so that vibration is directly transmitted to the molded body material 30 and the vibration time can be shortened.

  Next, similarly to the above-described method, another mold 1 is prepared, and a molded body material 30 is placed inside the mold 1. Thereafter, as shown in FIG. 7, another mold 1 on which the molded body material 30 is cast is overlaid. At this time, the lower end of the side wall part 12 is locked with the upper end of the side wall part 12 located in the lower stage.

  By repeating these steps, as shown in FIGS. 7A and 7B, the molds 1 on which the molded body material 30 is cast are sequentially stacked. After the molds 1 on which the molding material 30 has been placed are stacked in a plurality of stages in the vertical direction, the mold 1 on which the molding material is not placed (only the outer mold 10 in FIG. 7) is Arrange on the top. And the pressing member 40 is arrange | positioned on the outer formwork 10 located in the uppermost step. The pressing member 40 is a weight having a weight that allows the excess of the molding material 30 in the lower stage to escape into the concave portion 13 of the outer mold 10 located in the uppermost stage. It is cured in this state.

  Even if the surface of the molding material placed on the mold 1 is raised, the molding material on which the molding material located in the upper stage is placed, or the pressing member 40 is used to remove excess molding material. It can escape to the recessed part 13 of the outer frame 10 located in an upper stage.

  By performing the above steps, a molded body can be manufactured by curing the molded body material in each of the vertically stacked molds 1. In addition, the molded object of this Embodiment is plate shape. When the molded body is taken out from the mold 1, the mold can be easily removed by holding only the inner frame 20 by holding the flange portion 23 of the inner mold 20 and turning the inner frame 20 upside down. Since the burrs that have entered the recess 13 of the outer mold 10 are formed in the removed molded body, the burrs are removed. Burrs can be easily removed by tapping.

  In addition, when the molded body material includes an aggregate having ceramic siding waste, an aluminosilicate, and an alkali silica solution, it contains Si (silicon) element, and the aluminosilicate and the alkali silica solution are polymerized under an alkaline condition. A silicate polymer molded body in which the silicon polymer body produced by molding is molded is produced. The silicate polymer molded body contains an Al (aluminum) element, an Si element, and an O (oxygen) element, and each element is chemically bonded.

  Thus, since the recessed part 13 for escaping the molding material 30 cast | placed in the lower stage is formed in the lower surface side of the bottom wall part 11 of the outer mold frame 10 of this Embodiment, a molding material Even when the surface rises as shown in FIG. 1 when it is placed on the mold 1 due to the high viscosity of 30, a uniform pressure is applied by the mold stacked on the upper stage, and the surface is thicker than the desired thickness. The excess molding material is discharged along the recess 13. For this reason, since the thickness of a molded object can be adjusted, the molded object of desired thickness can be manufactured and the precision of the thickness of a molded object can be improved. Therefore, it is possible to improve moldability, which is easy to make a desired shape.

  Moreover, since the molding material 30 located in the upper stage or the molding material 30 in the mold 1 located in the lower stage can be suppressed by the pressing member 40 by vertical stacking, the manufacturing is performed. It is possible to suppress warping of the molded body. In particular, in a new molding material found by the present inventors, that is, a molding material including an aggregate having ceramics-based siding waste, an aluminosilicate, and an alkali silica solution, the mold 1 of the present embodiment is used. Due to the vertical stacking, the warpage of the silicate polymer molded product is remarkable.

  In addition, by vertically stacking, a plurality of molded bodies are molded in a space for forming one molded body (installation area of the mold 1), so that the molded bodies can be molded in a space-saving manner. For this reason, the formwork 1 of this Embodiment enables reduction of a space and mass production.

  In the mold 1 of the present invention, the inner mold 20 may be omitted. In this case, a molded body material is placed on the inner peripheral surface 10b of the outer mold 10.

  However, when the mold 1 is provided with the inner mold frame 20 having the flange portion 23, the flange portion 23 forms between the side portion 22 of the inner mold frame 20 and the side wall portion 12 of the outer mold frame 10. The body material can be prevented from flowing. For this reason, a moldability can be improved more. Further, the manufactured molded body can be easily taken out by supporting the flange portion 23 and taking it out from the outer mold 10 and turning the inner mold 20 upside down.

  Furthermore, since the inner mold frame 20 of the present embodiment has the flange portion 23, it is possible to prevent deformation of the formed molded body material 30 due to pressure. About the effect of the deformation rate by the shape of a flange part, it has the following knowledge.

Table 1 shows that the bottom portion 21 is about 300 mm × about 300 mm, the side portion 22 has a height of about 30 mm, and the thickness and width of the flange portion 23 are variously changed to 2.0 g / cm ³ . The deformation amount when the molded body material is placed is measured, and the deformation rate calculated from the result is shown. These molds are formed by vacuum molding a resin sheet. The mold with the flange portion having a width of 0 mm is a case where there is no flange portion as shown in FIG. The x direction and the y direction in Table 1 are directions shown in FIG.

  As shown in Table 1, when the molded body material is placed on the mold 100 having no flange portion shown in FIG. 8, the molded body material is greatly deformed by the pressure of the molded body material as shown in FIG. On the other hand, by forming the flange portion 23 in the mold, it is possible to suppress the deformation of the side portion 22 due to the pressure of the formed molded material. Further, when the width of the flange portion is 20 mm or more, the deformation of the side portion 22 when the molded body material is placed can be further suppressed.

  Further, when the inner mold frame 20 is a vacuum molded sheet, the smoothness of the inner peripheral surface 20b of the inner mold frame 20 is high, so that the surface property of the molded body to be manufactured can be improved. Further, when the inner mold 20 is formed by vacuum molding, it is easier to handle and can be mass-produced at a lower cost than the case where the parts are assembled separately. For this reason, when changing the design of the surface of the molded body, the design of the molded body can be easily changed by changing only the inner mold frame 20 without changing the outer mold frame 10.

  Further, when the surface in contact with the molded body material is formed of a resin, the mold material can be easily demolded without applying a release agent to the mold 1 because the peelability from the molded body material is very high. For this reason, since the process of apply | coating a release agent to the formwork 1 can be skipped, manufacture of a molded object is easy. In particular, in a new molding material found by the inventor, that is, a molding material including an aggregate having a ceramic siding waste, an aluminosilicate, and an alkali silica solution, the followability to the mold 1 is high. This effect is remarkable because the releasability from the resin is very high.

  Since the surface of the molded body material including the aggregate having the ceramic siding waste found by the present inventor, the aluminosilicate, and the alkali silica solution is raised when it is placed on the mold 1, The formwork 1 can be used suitably. As the material of the silicate polymer molded body, the ceramic siding waste can be used as a polymer aggregate formed of an aluminosilicate and an alkali silica solution. For this reason, since the ceramics-type siding waste material discarded as a waste can be reused as a silicate polymer molding, an environmental load can be reduced.

  In the material of this silicate polymer molding, aggregate: aluminosilicate: alkali silica solution = (3.0 to 3.5): (1.0 to 0.5): 1.0, (1.8 to 2 .6): (1.2 to 0.4): 1.0, (1.0 to 1.7): (1.3 to 0.7): 1.0 and (0.3 to 0.5) ): (1.3 to 1.0): When mixed at a mass ratio of 1.0, the strength of the silicate polymer molded body produced using the mold 1 can be improved. . Therefore, the silicate polymer molded body manufactured using the mold 1 is used for floor materials, structural materials, interior materials, exterior materials, pavement materials, exterior construction materials, and the like.

  The embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is shown not by the embodiments and examples described above but by the claims, and is intended to include all modifications within the meaning and scope equivalent to the claims.

  DESCRIPTION OF SYMBOLS 1 Formwork, 10 Outer formwork, 10b, 20b Inner peripheral surface, 11 Bottom wall part, 11a Lower surface, 11b Upper surface, 12 Side wall part, 12a 1st wall surface, 12b 2nd wall surface, 12c 3rd wall surface, 12d 4th wall surface, 12e 5th wall surface, 13 recessed part, 14 outer peripheral groove, 15 burr forming groove, 20 inner frame, 21 bottom part, 22 side part, 23 flange part, 30 molded body material, 40 pressing member, O Center, U, V, W thickness, X, Y sides.

Claims (9)

A molding for casting material to be vertically stacked in the vertical direction,
The bottom wall,
A side wall portion connected to the bottom wall portion,
The formwork in which the recessed part for letting the molded object material cast | placed by the lower stage escape is formed in the lower surface side of the said bottom wall part.   The mold according to claim 1, wherein the recess includes an outer peripheral groove formed along an outer periphery of the bottom wall portion.   The mold according to claim 2, wherein the recess further includes a plurality of burr forming grooves that are continuous with the outer peripheral groove and extend toward the center from each of a plurality of positions of the outer peripheral groove.   The said recessed part is a formwork of any one of Claims 1-3 currently formed in point symmetry with respect to the center.   The formwork of any one of Claims 1-4 comprised so that the lower end of the said side wall part may be latched with the upper end of the said side wall part located in a lower stage.   And further comprising an inner frame that is disposed on an inner peripheral surface of the bottom wall portion and the side wall portion and includes a bottom portion, a side portion that is continuous with the bottom portion, and a flange portion that is continuous with the side portion and extends outward. Item 6. The mold according to any one of Items 1 to 5.   The mold according to claim 6, wherein the inner frame is a vacuum-formed sheet.   The formwork according to any one of claims 1 to 7, wherein a surface in contact with the molded body material is formed of a resin.   The said molded object material is a formwork of any one of Claims 1-8 containing the aggregate which has ceramics system siding waste material, an aluminosilicate, and an alkali silica solution.

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