Extrusion molding die and corner member manufacturing method with use of the same, l-shaped corner member and installation structure thereof

Abstract

To obtain a corner member extrusion molding die that can use conventional flat panel manufacturing dies as is without newly manufacturing an exclusive die, and a corner member manufacturing method with use of the extrusion molding die.SOLUTION: An extrusion molding die comprises: an outer frame with a gap part; a plurality of medium balls with substantially rectangular cross section that are arranged in the gap part; and two medium balls of substantially triangular cross section that are arranged at an outermost end of the gap part. Further, a corner member manufacturing method manufactures a pre-corner member by extrusion molding of a material in the extrusion molding die, and forms an inclined joint area by cutting along an inclined plane of a hollow part, which is positioned at the farthest end, of two hollow parts with substantially triangular cross section that are molded at an end of the pre-corner member.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to an extrusion molding die, a method for manufacturing a corner member using the die, an L-shaped corner member, and an installation structure for the same.

[0002] An example of this type of conventional known technology is the extrusion molded flat panel (hereinafter simply referred to as flat panel) shown in Figure 4 of Patent Document 1. This flat panel is formed into a hollow shape by interposing ribs between a thin front panel and a back panel.

[0003] This flat panel is generally manufactured by extruding a plastic material such as a cement-based mixture from an extrusion port and curing it. For example, Patent Document 4 shows a manufacturing method in which a thickener is discharged onto the base surface of an extrusion molding machine from at least one discharge port provided on the die and / or the side wall of the inner ball of the extrusion molding machine, and the extrusion molding plate is an extrusion molding cement plate.

[0004] Patent Document 5 discloses a method for manufacturing an extruded plate having a plurality of elongated hollow portions therein, in which a pair of rollers rotating in opposite directions are arranged on the outlet side inside an extruder with a gap between them to form an outlet portion by said gap, a center ball is arranged in front of the rollers, and a hydraulic material as a raw material for the extruded plate is pressed and sent to the outlet portion, and is squeezed by the rollers and transferred to the outlet portion to obtain the extruded plate.

[0005] Here, we will briefly explain the flat panel manufacturing method exemplified in the aforementioned Patent Document 1. Fig. 14 is a perspective view of a flat panel 40. Fig. 15 is a front view of the flat panel 40. Note that the flat panel 40 shown here is an example, and is not limited to this shape.

[0006] The flat panel 40 is manufactured using the following extrusion molding die: Figure 16 is a schematic front view of an outer frame 43 that constitutes an extrusion molding die 42 for manufacturing the flat panel 40 shown in Figure 14.

[0007] As shown in FIG. 16, the outer frame 43 is provided with a gap 44 for forming the outer shape of the flat panel 40.

[0008] Next, FIG. 17 is a diagram showing a schematic view of an embodiment in which a center ball 45 and a center ball 46 are arranged inside a gap 44 of an outer frame 43. As shown in FIG.

[0009] When material cement is extruded into this extrusion molding die 42 from the front direction in Figure 17, the material cement does not flow into the areas of the center balls 45 and 46, and a flat panel 40 is obtained with a hollow portion 41 as shown in Figures 14 and 15.

[0010] On the other hand, corner members with an L-shaped cross section are sometimes used for the protruding and recessed corners of buildings. For example, the technology shown in Patent Document 2 involves cutting the entire edge of a hollow extrusion molded plate at an arbitrary angle to form a notched slope over the entire length of the front and back, and then butting the notched slopes of a pair of hollow extrusion molded plates thus formed and bonding them together with an adhesive, or inserting an L-shaped metal fitting into the hollow part of the end surface of the hollow extrusion molded plate to join them, or further joining them using both an adhesive and an L-shaped metal fitting to form a wall corner.

[0011] The technology disclosed in Patent Document 3 is a wall panel in which a hollow extruded panel has parallel front and back panels integrally joined at a predetermined interval by multiple joints, and the front panel is cut at an angle from the inner corners of the end portions, excluding the outer corners, to the back panel, and mortar is filled into the angled cut portions of the wall panel. [Prior art documents] [Patent documents]

[0012] [Patent Document 1] Japanese Patent Application Publication No. 5-306558 [Patent Document 2] Japanese Patent Application Publication No. 1-39455 [Patent Document 3] Japanese Patent Application Publication No. 9-170291 [Patent Document 4] Japanese Patent Application Publication No. 10-109306 [Patent Document 5] JP 2006-315396 A [Patent Document 6] JP 2004-257024 A Summary of the Invention [Problem to be solved by the invention]

[0013] In the method shown in Patent Document 3, one side of a plate is cut at an angle and the gap left after the cut is filled with mortar to join the slanted surfaces of the plate. This method has problems such as the time it takes for the mortar to harden and the increased effort, equipment, and cost required to fill the mortar.

[0014] Therefore, Patent Document 6 shows a method for manufacturing a corner member that can produce a corner member of a desired shape at a high yield and low cost. This method has the effect of eliminating the need for a process of cutting at an angle and the equipment required for that, and of easily manufacturing a corner member with good dimensional accuracy and shape accuracy.

[0015] However, this method requires a special mold for extrusion molding a corner member of such a shape, which results in low versatility and high costs.

[0016] Therefore, the problem that the present invention aims to solve is to provide an extrusion molding die for manufacturing corner members that allows the use of conventional flat panel manufacturing dies as is, without the need to manufacture a new dedicated die for manufacturing corner members, thereby making it versatile and reducing costs, and to provide a method for manufacturing corner members using this extrusion molding die.

[0017] Another object of the present invention is to provide an installation structure suitable for installing the corner member obtained by the above manufacturing method on a column surface. [Means for solving the problem]

[0018] The first invention for solving the above problem is an extrusion molding die comprising an outer frame having a gap, a plurality of central balls having an approximately rectangular cross-section arranged in the gap, and two central balls having an approximately triangular cross-section arranged at the extreme ends of the gap.

[0019] The second invention is a method for manufacturing a corner member, which comprises extruding a material into the extrusion molding die of the first invention to produce a pre-corner member, and then cutting along the slope of the hollow portion located at the farthest end of two hollow portions with approximately triangular cross-sections molded at the ends of this pre-corner member to form an inclined joint surface.

[0020] The third invention is an L-shaped corner member formed by joining two corner members manufactured by the corner member manufacturing method of the second invention. More specifically, the L-shaped corner member is formed by joining the inclined joint surfaces of the two corner members with an adhesive or secondary construction materials.

[0021] The fourth invention is an installation structure for an L-shaped corner member in which the L-shaped corner member of the third invention is installed on a column surface via a mounting hardware. Effect of the Invention

[0022] According to the present invention, there is provided an extrusion molding die for manufacturing corner members that can use conventional dies for manufacturing flat panels without manufacturing a new die specifically for the corner members, and thus is versatile and reduces costs, and a manufacturing method for corner members using this extrusion molding die. In addition, when the corner members obtained by this manufacturing method are installed on the surface of a column, an installation structure suitable for this purpose is obtained. [Brief description of the drawings]

[0023] [Figure 1] FIG. 1 is a front schematic view of an extrusion molding die for manufacturing a corner member. [Diagram 2] An enlarged view of part A in Figure 1. [Diagram 3] FIG. [Figure 4] Enlarged view of part B in Figure 3. [Diagram 5] FIG. [Figure 6] Enlarged view of part C in Figure 5. [Figure 7] FIG. 13 is a diagram showing how two corner members are bonded together. [Figure 8] FIG. [Figure 9] Enlarged view of part D in Figure 8. [Figure 10] FIG. 13 is a diagram showing a manner in which corner members are connected via auxiliary construction materials. [Figure 11] FIG. [Figure 12] Enlarged view of part E in Figure 11. [Figure 13] FIG. 13 is a diagram showing how the L-shaped corner member is installed on a column surface. [Figure 14] FIG. 1 is a perspective view of an extruded cement board flat panel. [Figure 15] FIG. [Figure 16] FIG. 2 is a front schematic view of an outer frame that constitutes an extrusion molding die for manufacturing a flat panel. [Figure 17] Schematic diagram showing an embodiment in which a center ball is placed inside the gap in the outer frame. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0024] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. Fig. 1 is a schematic front view of an extrusion molding die 10 for manufacturing a corner member of the present invention. Fig. 2 is an enlarged view of part A in Fig. 1.

[0025] 1 and 2, the extrusion molding die 10 for manufacturing a corner member uses the outer frame 43 of the extrusion molding die 42 shown in Figures 16 and 17 and the central ball 45 having a substantially rectangular cross section installed in the cavity 44. Also, instead of the central ball 46 in Figure 17, two central balls 11 and 12 having substantially triangular cross sections are arranged.

[0026] Then, material cement is extruded into extrusion mold 10 shown in Fig. 1 from the front direction of Fig. 1 to produce pre-corner member 20 shown in Fig. 3. Fig. 3 is a front view of pre-corner member 20 produced in this way. Fig. 4 is an enlarged view of part B in Fig. 3. When viewed obliquely, this pre-corner member 20 has the same shape as flat panel 40 shown in Fig. 14, so this will not be shown here.

[0027] Next, of the two hollow sections 24 and 25 with approximately triangular cross-sections formed at the end of pre-corner member 20 (see part B in Figure 3 and Figure 4), the end of pre-corner member 20 is cut along cutting line 26 (shown in Figure 4) that follows the triangular slope of hollow section 25 located at the extreme end using a chip saw or the like.

[0028] In this way, the corner member 21 having the inclined joining surface 27 shown in Figures 5 and 6 is manufactured. Here, Figure 5 is a front view of the corner member 21, and Figure 6 is an enlarged view of part C in Figure 5.

[0029] Next, an L-shaped corner member formed by bonding corner members 21 will be described. Fig. 7 is a diagram showing how the inclined bonding surfaces 27 of two corner members 21 are bonded together. Fig. 8 is a diagram showing an L-shaped corner member 22 of a first embodiment obtained by bonding two corner members 21 together. Fig. 9 is an enlarged view of part D in Fig. 8. The inclined bonding surfaces 27 can be bonded using an epoxy adhesive.

[0030] Fig. 10 is a diagram showing a mode in which two corner members 21 are connected via a secondary construction material 30. Fig. 11 is a diagram showing a second form of an L-shaped corner member 23. Fig. 12 is an enlarged view of part E in Fig. 11. This secondary construction material 30 is composed of a sealant, a fireproof joint material, and a gasket.

[0031] Next, an installation structure of the L-shaped corner member in which the L-shaped corner member is installed on the column surface via auxiliary construction materials will be described.

[0032] Figure 13 shows how an L-shaped corner member is installed on a column surface 31. In detail, Figure 13(a) shows a structure in which a first form of L-shaped corner member 22 and Figure 13(b) shows a second form of L-shaped corner member 23 are installed on a column surface 31 via a mounting hardware 32. The installation via the mounting hardware 32 may be performed according to a conventionally known method. [Explanation of symbols]

[0033] 10 Extrusion mold for manufacturing corner parts 11 Medium 12 Medium size 20 Pre-corner parts 21 Corner parts 22 L-shaped corner member of the first form 23 Second form L-shaped corner member 24 Hollow part 25 Hollow part 26 Cut line 27 Inclined joint surface 30 Construction auxiliary materials 31 Column surface 32 Construction hardware 40 Flat Panel 41 Hollow part 41 42 Extrusion mold 43 Outer Frame 44 Cavity 45 Medium 46 Medium

Claims

1. An extrusion molding die comprising an outer frame having a gap, a plurality of central balls having an approximately rectangular cross-section arranged in the gap, and two central balls having an approximately triangular cross-section arranged at the very ends of the gap.

2. 2. A method for manufacturing a corner member, comprising the steps of: extruding a material into the extrusion molding die according to claim 1 to produce a pre-corner member; and cutting the endmost hollow portion of two hollow portions having an approximately triangular cross section formed at the end of the pre-corner member along the slope of the hollow portion located at the end to form an inclined joint surface.

2. A method for manufacturing a corner member using the extrusion molding die according to claim 1, comprising the steps of: cutting the hollow portion located at the farthest end of two hollow portions with approximately triangular cross-sections formed at the end of a pre-corner member formed by extruding a material into the extrusion molding die at an angle of approximately 45° along a slope of the approximately triangular shape to form an inclined joint surface.

3. 3. An L-shaped corner member formed by joining two corner members manufactured by the corner member manufacturing method described in claim 2, wherein the inclined joint surfaces of the two corner members are joined by an adhesive or auxiliary construction materials.

4. 4. An installation structure for an L-shaped corner member, comprising the L-shaped corner member according to claim 3 installed on a column surface via a mounting hardware.

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