Concrete pouring method, chamfer strips, and chamfer strip processing equipment

Abstract

To provide a concrete pouring method that allows air contained in air bubbles to be suitably released into the atmosphere without attaching special materials to the chamfer strips. [Solution] The concrete pouring method of the present invention is A concrete pouring method in which concrete is poured into formwork 100 and chamfered surfaces are formed on the concrete using chamfering strips 10A, 10B, and 10C, The molding strips 10A, 10B, and 10C are, The structure includes a contact surface 11 with concrete, an exposed surface 13 connected to the contact surface 11 and exposed to the atmosphere, a mounting surface 12 connected to the contact surface 11 and the exposed surface 13 and attached facing the formwork 100, and ventilation paths 15A, 15B, and 15C that direct air released from the poured concrete toward the exposed surface.

Description

Technical Field

[0001] The present invention relates to a concrete placing method using a chamfer strip. The present invention also relates to a chamfer strip used when placing concrete, and to a chamfer strip processing apparatus for processing the chamfer strip. Background Art

[0002] When placing concrete into a formwork, a chamfered surface is formed on the concrete by attaching a chamfer strip to the corner portion of the formwork. Air bubbles that have risen from inside the concrete may remain on the contact surface where the chamfer strip and the concrete come into contact. If the concrete solidifies while air bubbles remain on the contact surface between the chamfer strip and the concrete, traces of the air bubbles remain on the surface portion of the concrete where the bubbles were trapped. Since traces of air bubbles cause a reduction in the strength of concrete, it is desirable that air bubbles flow out to the atmosphere without remaining on the contact surface with the chamfer strip.

[0003] The sheet-shaped material to be bonded to the chamfer strip disclosed in Patent Document 1 allows air to be discharged to the atmosphere from air bubbles that have risen inside the concrete through the sheet-shaped material, without the chamfer strip coming into direct contact with the concrete. Prior Art Documents Patent Documents

[0004] Patent Document 1 Japanese Unexamined Patent Publication No. 2020-143456 Summary of the Invention Problem to be Solved by the Invention

[0005] Since chamfer strips are available in various sizes, bonding a sheet-shaped material as disclosed in Patent Document 1 to a chamfer strip in accordance with the size of the chamfer strip requires time and labor, and additionally requires purchasing the sheet-shaped material.

[0006] Therefore, the present invention aims to provide a concrete pouring method that allows air contained in air bubbles to be suitably released into the atmosphere without attaching special materials to the molding strip. [Means for solving the problem]

[0007] The concrete pouring method of the present invention is A concrete pouring method in which concrete is poured into a formwork and a chamfered surface is formed on the concrete using a chamfering strip, The faceplate is, It comprises a contact surface with concrete, an exposed surface connected to the contact surface and exposed to the atmosphere, a mounting surface connected to the contact surface and exposed surface and attached opposite to the formwork, and a ventilation path that directs air released from the poured concrete toward the exposed surface.

[0008] The faceplate is, Multiple ventilation holes penetrating the contact surface, It comprises a hollow cavity surrounded by a contact surface, an exposed surface, and a mounting surface, Ventilation holes and hollow cavities constitute the ventilation path. The present invention relates to a concrete pouring method.

[0009] The ventilation holes are arranged in a staggered pattern on the contact surface. The present invention relates to a concrete pouring method.

[0010] The ventilation path is, From the contact surface, through the mounting surface, to the exposed surface, The present invention relates to a concrete pouring method.

[0011] The ventilation path is, From the mounting surface, through the contact surface, to the exposed surface, The present invention relates to a concrete pouring method.

[0012] The ventilation path consists of a rectangular cross-section. The present invention relates to a concrete pouring method.

[0013] The concrete pouring method of the present invention is A concrete placing method of placing concrete into a formwork and forming a chamfered surface on the concrete by a chamfer strip, wherein Air released from the concrete through the chamfer strip is allowed to flow into the atmosphere.

[0014] The chamfer strip of the present invention is A chamfer strip for placing concrete into a formwork and forming a chamfered surface on the concrete, comprising:[DEL] a contact surface in contact with concrete, an exposed surface connected to the contact surface and exposed to the atmosphere, a mounting surface connected to the contact surface and the exposed surface and attached to face the formwork, and a ventilation path for allowing air released from placed concrete to flow toward the exposed surface.

[0015] The chamfer strip of the present invention comprises a plurality of ventilation holes penetrating the contact surface, and a hollow cavity surrounded by the contact surface, the exposed surface and the mounting surface, wherein the ventilation holes and the hollow cavity constitute the ventilation path.

[0016] The chamfer strip processing apparatus of the present invention is A chamfer strip processing apparatus for forming ventilation holes penetrating a predetermined surface of a chamfer strip, comprising:[DEL] a frame of the chamfer strip processing apparatus, a support roller rotatably supported by the frame and configured to support the chamfer strip, and a processing roller rotatably supported by the frame and having a plurality of punches arranged thereon for forming the ventilation holes. [Effects of the Invention]

[0017] According to the present invention, it is possible to provide a concrete placing method capable of suitably causing air contained in air bubbles to flow into the atmosphere. [Brief Description of the Drawings]

[0018] [Figure 1]This figure shows a chamfer strip according to the first embodiment of the present invention, where (a) is a perspective view of the chamfer strip and (b) is a diagram showing a cross-section of the formwork, chamfer strip and concrete when the chamfer strip is used for concrete pouring. [Figure 2] This figure shows a chamfering processing apparatus for processing chamfering according to the first embodiment of the present invention, where (a) is a front view of the chamfering processing apparatus and (b) is a side view of the chamfering processing apparatus. [Figure 3] This figure shows a punch for a chamfering machine that processes chamfering according to the first embodiment of the present invention, where (a) is a side view of the chamfering machine in the middle of processing the chamfering, and (b) and (c) are enlarged side views of the punch. [Figure 4] This figure shows a chamfer strip according to a second embodiment of the present invention, where (a) is a perspective view of the chamfer strip and (b) is a diagram showing a cross-section of the formwork, chamfer strip and concrete when the chamfer strip is used for concrete pouring. [Figure 5] This figure shows a chamfer strip according to a third embodiment of the present invention, where (a) is a perspective view of the chamfer strip and (b) is a diagram showing a cross-section of the formwork, chamfer strip and concrete when the chamfer strip is used for concrete pouring. [Modes for carrying out the invention]

[0019] The following describes an embodiment of the present invention, a concrete pouring method in which concrete is poured into a formwork and a chamfered surface is formed on the concrete using chamfering strips, with reference to the attached drawings. The embodiments include at least the first, second, and third embodiments. <First Embodiment: See Figures 1-3> The chamfering strip 10A according to this embodiment forms a chamfered surface on the concrete C poured into the formwork 100. The chamfer strip 10A is equipped with a ventilation path 15A that directs air (bubbles B) released from the concrete C being poured towards the atmosphere. By pouring the concrete C using the chamfer strip 10A, the air contained in the bubbles B can be effectively directed towards the atmosphere.

[0020] [Corner 10A: See Figure 1] As shown in Figure 1, the chamfer strip 10A comprises a contact surface 11 with the concrete C, an exposed surface 13 connected to the contact surface 11 and exposed to the atmosphere, a mounting surface 12 connected to the contact surface 11 and the exposed surface 13 and attached facing the inner surface 101 of the formwork 100, and a ventilation path 15A that directs air (bubbles B) released from the poured concrete C toward the exposed surface 13. The chamfer strip 10A is made of, for example, a resin material such as polypropylene or a foamed resin material.

[0021] Furthermore, the chamfer strip 10A includes a plurality of ventilation holes 151 that penetrate the contact surface 11, and a hollow cavity 152 surrounded by the contact surface 11, the exposed surface 13, and the mounting surface 12. The ventilation holes 151 and the hollow cavity 152 constitute a ventilation path 15A. The ventilation holes 151 are arranged, for example, in a staggered pattern on the contact surface 11. The spacing between each ventilation hole 151 may be shorter than, for example, the size of air bubbles B that significantly reduce the strength of the concrete C. The hollow cavity 152 penetrates both sides of the side surface 14 of the chamfer strip 10A. In other words, the chamfer strip 10A is a hollow chamfer strip. The surface of the contact surface 11 that forms the hollow cavity 152 where air is trapped, and the side surface 14 that is connected to and open to the hollow cavity 152, constitute the exposed surface of the present invention. In Figure 1(a), the reference numerals for the ventilation holes 151 are shown only for some of them, and the reference numerals for all ventilation holes are omitted.

[0022] For example, when viewing the formwork 100 that make up the four sides of a rectangular frame in plan view, the side surface 14 of the chamfer strip 10A attached to the formwork 100 that makes up one side of the frame comes into contact with the inner surface 101 of the formwork 100 that is connected to that side. Alternatively, if another chamfer strip 10A is attached to the formwork 100 that is connected to that side, for example, the cut surfaces that are cut at a 45-degree angle to each other will abut against each other.

[0023] Concrete C is poured inside the formwork 100. Once concrete C is poured, it is compacted using a vibrator. As the concrete C sinks due to the vibrations from the compaction process, air bubbles contained within the concrete C rise to the surface of the concrete C, which is exposed to the atmosphere. However, not all air bubbles contained within the concrete C rise to the surface, and even after the compaction process, air bubbles that remained inside the concrete C gradually rise to the surface.

[0024] The chamfer strip 10A can release air bubbles B that rise inside the concrete C into the atmosphere through the ventilation path 15A. Specifically, when air bubbles B reach the ventilation holes 151 on the contact surface 11 of the chamfer strip 10A, the air in the air bubbles B is sent through the ventilation holes 151 to the hollow cavity 152, as shown by the arrow.

[0025] For example, if the inner surface 101 of another formwork 100 connected to the formwork 100 to which the chamfer strip 10A is attached is in contact with the side surface 14 of the chamfer strip 10A, then air is discharged into the atmosphere from the hollow cavity 152 through the gap between the inner surface 101 and the side surface 14 of the other formwork 100. Also, for example, if it is butted against the cut surface of another chamfer strip 10A, then the hollow cavity 152 of the other chamfer strip 10A and the hollow cavity 152 of the chamfer strip 10A are in communication. Since the amount of air contained in bubble B is far less than the amount of air (atmosphere) remaining in the entire connected hollow cavity 152, the air contained in bubble B flows into the atmosphere, which is the air remaining in the hollow cavity 152, without maintaining the shape of bubble B.

[0026] [Corner molding device 50: See Figures 2 and 3] The chamfer strip 10A can be obtained, for example, by processing a hollow chamfer strip using the chamfer strip processing device 50 shown in Figure 2. The chamfering machine 50 forms ventilation holes 151 in a hollow chamfering piece, penetrating a contact surface 11 that is a predetermined surface that contacts concrete. The chamfering machine 50 comprises a frame 51, a support roller 53 rotatably supported by the frame 51 to support the chamfering piece to be processed, and a processing roller 55 rotatably supported by the frame 51, on which a plurality of punches 55B that form the ventilation holes 151 are arranged. The processing roller 55 rotates in the direction of the white arrow. Note that in Figures 2 and 3, only some of the reference numerals for the punches 55B are shown, and the reference numerals for all punches are omitted.

[0027] The processing roller 55 consists of a cylindrical roller 55A with multiple punches 55B provided on its side, and multiple punches 55B that punch out the surface corresponding to the contact surface 11 of the chamfer block 10A to form ventilation holes 151. An electric motor (not shown) may be connected to the rotation axis of the processing roller 55 as a drive source, or a handle (not shown) may be connected to be rotated by an operator. The punches 55B may be arranged in a staggered pattern on the side of the roller 55A.

[0028] When processing the chamfer strip, a hollow chamfer strip is placed on the support roller 53. Next, it is moved to just before it contacts the punch 55B of the processing roller 55, and then the processing roller 55 is rotated around the axis of rotation, so that the chamfer strip is fed and the surface corresponding to the contact surface 11 is punched out by multiple punches 55B, forming ventilation holes 151 in the chamfer strip.

[0029] The punch 55B (circled in Figure 3(a)), which punches out the hollow chamfer strip, is shown, for example, in the enlarged view of punch 55B1 in Figure 3(b). The punch 55B1 has a gently curved surface on the side that leads when the processing roller 55 rotates, and the part connecting the acute-angled tip, where the most force is applied to the punch 55B1, to the roller 55A forms an angle of approximately 90 degrees with respect to the curved surface of the roller 55A. When punching out the chamfer strip, the acute-angled tip of the punch 55B1 first reaches and pierces the chamfer strip, and then the gently curved surface pushes down on the area that will become the hole, thereby forming a ventilation hole 151 in the chamfer strip.

[0030] The shape of the punch 55B1 allows for continuous processing of the chamfer strip, and prevents the generation of debris caused by drilling holes for forming the ventilation holes 151. Furthermore, the sharp tip, which functions as a blade that penetrates the chamfer strip, is used to penetrate the strip first, and then the gently curved portion pushes down the area that will become the hole in the chamfer strip towards the hollow cavity 152, thereby preventing the generation of burrs that protrude from the inside to the outside of the chamfer strip 10A. Therefore, the chamfer strip processing device 50 can prevent the generation of burrs that would form depressions on the chamfered surface of the concrete, thus preventing a decrease in the strength of the chamfered surface of the concrete. Furthermore, by first inserting the sharp-angled tip into the chamfer strip to create a starting point for processing, and then proceeding with the shearing of the chamfer strip by the gently curved portion as the roller 55A rotates, deformation that would cause the hollow chamfer strip to lose its hollow triangular shape in cross-section can be suppressed.

[0031] The punch 55B (circled in Figure 3(a)), which punches out the hollow chamfer strip, is shown, for example, in the enlarged view of punch 55B2 in Figure 3(c). The punch 55B2 consists of gently curved sections on both the leading and trailing sides when the processing roller 55 rotates, and the tip where the greatest force is applied to punch 55B2 is located at the intersection of the gently curved sections. When punching out the chamfer strip, the sharp tip of punch 55B2 first reaches and pierces the chamfer strip, and then the gently curved section pushes down on the area that will become the hole, forming a ventilation hole 151 in the chamfer strip. In addition, the gently curved section pushes the contact surface 11 of the chamfer strip after the tip has pierced it. In other words, the ventilation hole 151 is formed when the front and rear portions of the contact surface 11 are pushed toward the hollow cavity 152 by the gently curved section of punch 55B2 in the direction of feeding the chamfer strip, starting from the point where the tip of punch 55B2 pierces the surface.

[0032] The punch 55B2 has gently curved sections on both sides of the circumferential direction of the roller 55A, which has a sharp-angled tip that functions as a blade to pierce the chamfering block. This allows the chamfering block to be processed even if the direction in which it is fed is reversed. In other words, regardless of the rotation direction of the roller 55A, the tip of the punch 55B2 can pierce the block, and then shearing can be performed with the curved section.

[0033] Even with the shape of the punch 55B2, the chamfer strips can be processed continuously, and the generation of debris due to drilling holes for forming the ventilation holes 151 can be suppressed. Similarly, the generation of burrs protruding from the inside to the outside of the chamfer strip 10A can be suppressed, and the chamfer strip processing device 50 can suppress the generation of burrs that would cause depressions in the chamfered surface of the concrete, thus suppressing a decrease in the strength of the chamfered surface of the concrete. Similarly, by first inserting the sharp-angled tip into the chamfer strip to create a processing starting point, and then proceeding with the shearing of the chamfer strip by the gently curved portion along with the rotation of the roller 55A, deformation that would cause the hollow chamfer strip to lose its hollow triangular shape in cross-section can be suppressed.

[0034] [effect] The concrete pouring method using the 10A chamfer strip described above has the following effects. [First Effect] The chamfer strip 10A is equipped with ventilation holes 151 and a hollow cavity 152 that constitute the ventilation path 15A. This allows air that floats up inside the concrete C and is released from the concrete C to be sent from the ventilation holes 151 that penetrate the contact surface 11 to the hollow cavity 152, and then to the atmosphere through the open portion of the side surface 14 connected to the hollow cavity 152. Alternatively, the air that floats up inside the concrete C and is released from the concrete C can be released into the atmosphere that remains in the hollow cavity 152. In other words, when concrete C is poured using the chamfer strip 10A, the air contained in the air bubbles B that float up inside the concrete C can be suitably released into the atmosphere without attaching any special materials to the chamfer strip.

[0035] Furthermore, the chamfering device 50 described above provides the following effects. [Second Effect] The chamfering machine 50 is equipped with a processing roller 55 on which a plurality of punches 55B1 or punches 55B2 for forming ventilation holes 151 are arranged, allowing for continuous processing of the chamfering and suppressing the generation of debris caused by punching holes in order to form the ventilation holes 151.

[0036] [Third Effect] Furthermore, the chamfering machine 50, which is equipped with a processing roller 55 on which punches 55B1 or punches 55B2 are arranged, first pierces the chamfering with the sharp tip portion to create a starting point for processing, and then proceeds with shearing the chamfering with the gently curved portion as the roller 55A rotates. This prevents deformation that would cause a hollow chamfering to lose its hollow triangular shape in cross-section, for example.

[0037] [Fourth Effect] The chamfering device 50, which is equipped with a processing roller 55 on which punches 55B1 or punches 55B2 are arranged, first pierces the chamfering material with its sharp tip, and then uses the gently curved portion to push down the area that will become the hole in the chamfering material toward the hollow cavity 152, thereby suppressing the generation of burrs that protrude from the inside to the outside of the chamfering material 10A. Therefore, the chamfering device 50 can suppress the generation of burrs that would form recessed portions on the chamfered surface of the concrete, and thus can suppress a decrease in the strength of the chamfered surface of the concrete.

[0038] [Fifth Effect] The punch 55B2 has gently curved sections on both sides of the circumferential direction of the roller 55A, which has a sharp-angled tip that functions as a blade to pierce the molding block. Therefore, regardless of the rotation direction of the roller 55A, the tip of the punch 55B2 can pierce the molding block, and then shearing can be performed with the curved sections.

[0039] <Second Embodiment: See Figure 4> In the first embodiment, the chamfer strip 10A is equipped with ventilation holes 151 and a hollow cavity 152 that constitute a ventilation path 15A, so that air that floats up inside the concrete C and is released from the concrete C is sent from the ventilation holes 151 that penetrate the contact surface 11 to the hollow cavity 152 and then released into the atmosphere. The chamfer strip 10B in the second embodiment differs in that it releases air that floats up inside the concrete C and is released from the concrete C into the atmosphere from a ventilation path 15B that connects from the contact surface 11 through the mounting surface 12 to the exposed surface 13. In addition, while the chamfer strip 10A is hollow, the chamfer strip 10B is solid, but the chamfer strip 10B may also be hollow like the chamfer strip 10A. In Figure 4, elements identical to those in the first embodiment are denoted by the same reference numerals as in Figure 1, and their detailed descriptions are omitted.

[0040] [Corner 10B: See Figure 4] As shown in Figure 4, the chamfer strip 10B is provided with a ventilation path 15B that connects from the contact surface 11 through the mounting surface 12 to the exposed surface 13. The ventilation path 15B forms a path through which air passes between the mounting surface 12 of the chamfer strip 10B and the inner surface 101 of the formwork 100.

[0041] The ventilation path 15B allows air contained in bubbles B that have risen along the inner surface 101 of the formwork 100 and reached the ventilation path 15B to pass through the inner surface 101 to the exposed surface 13, as shown by the arrow, and flow out into the atmosphere.

[0042] The ventilation path 15B has a rectangular cross-section. Specifically, a ventilation groove with a rectangular cross-section is provided, which is recessed from the mounting surface 12 toward the inside of the molding 10B, and the ventilation groove connects from the contact surface 11 to the exposed surface 13. In other words, the ventilation groove is open at both the contact surface 11 and the exposed surface 13, allowing air to flow from the open portion of the contact surface 11 to the open portion of the exposed surface 13.

[0043] The concrete pouring method using the 10B chamfer strip described above has the following effects in addition to the first effect. [6th effect] The ventilation path 15B of the molding strip 10B allows the air contained in the bubbles B that have risen along the inner surface 101 of the formwork 100 and reached the ventilation path 15B to pass through the inner surface 101 directly to the exposed surface 13 and out into the atmosphere.

[0044] <Third Embodiment: See Figure 5> In the first embodiment, the chamfer strip 10A is equipped with ventilation holes 151 and a hollow cavity 152 that constitute a ventilation path 15A, so that air that floats up inside the concrete C and is released from the concrete C is sent from the ventilation holes 151 that penetrate the contact surface 11 to the hollow cavity 152 and then released into the atmosphere. In the second embodiment, the chamfer strip 10B is supplied with air that floats up inside the concrete C and is released from the concrete C through a ventilation path 15B that connects from the contact surface 11 through the mounting surface 12 to the exposed surface 13, and then released into the atmosphere. The third embodiment of the chamfer strip 10C differs in that it allows air that floats up inside the concrete C and is released from the concrete C to the atmosphere via a ventilation path 15C that connects from the mounting surface 12 through the contact surface 11 to the exposed surface 13. Furthermore, while the chamfer strip 10A is hollow, the chamfer strip 10C is solid, but the chamfer strip 10C may also be hollow like the chamfer strip 10A. In Figure 5, elements identical to those in the first and second embodiments are denoted by the same reference numerals as in Figures 1 and 4, and their detailed descriptions are omitted.

[0045] [Corner 10C: See Figure 5] As shown in Figure 5, the chamfer strip 10C is provided with a ventilation path 15C that connects from the mounting surface 12 through the contact surface 11 to the exposed surface 13. The ventilation path 15C constitutes a path through which air traverses the contact surface 11 of the chamfer strip 10C.

[0046] The ventilation path 15C can, for example, send bubbles B that have risen along the inner surface 101 of the formwork 100 and reached the ventilation path 15C, or the air contained in bubbles B that have reached the ventilation path 15C on the contact surface 11, toward the exposed surface 13 and into the atmosphere, as indicated by the arrow.

[0047] The ventilation path 15C has a rectangular cross-section. Specifically, a ventilation groove with a rectangular cross-section is provided, which is recessed from the contact surface 11 toward the inside of the chamfer strip 10C, and the ventilation groove connects from the mounting surface 12 to the exposed surface 13. In other words, the ventilation groove is open at the exposed surface 13, and the air that passes through the ventilation groove flows into the atmosphere from the open portion of the exposed surface 13.

[0048] The concrete pouring method using the 10C chamfer strip described above produces the first and sixth effects.

[0049] In addition to the above, it is possible to select or replace the configurations listed in the above embodiments, or to change them to other configurations as appropriate, as long as they do not deviate from the spirit of the present invention. Although the chamfer strips 10A, 10B, and 10C described in the embodiment had a triangular cross-section, they may also have a polygonal shape, and the contact surface 11 may be curved. [Explanation of Symbols]

[0050] 10A,10B,10C Mengi 11 Contact surface 12 Mounting surface 13 Exposed surface 14 Side (exposed side) 15A, 15B, 15C Ventilation routes 50 face wood processing equipment 51 frames 53 Support roller 55 Machining rollers 55A Roller 55B, 55B1, 55B2 Punch 100 formwork 101 Inner self 151 Ventilation holes 152 Hollow Cavity B bubbles C Concrete

Claims

1. A concrete pouring method in which concrete is poured into a formwork and a chamfered surface is formed on the concrete using a chamfering strip, The aforementioned chamfer strip is The formwork comprises a contact surface with the concrete, an exposed surface connected to the contact surface and exposed to the atmosphere, an attachment surface connected to the contact surface and the exposed surface and attached opposite to the formwork, and a ventilation path that directs air released from the concrete being poured toward the exposed surface. Concrete pouring method.

2. The aforementioned chamfer strip is Multiple ventilation holes penetrating the aforementioned contact surface, A hollow cavity surrounded by the contact surface, the exposed surface, and the mounting surface, The ventilation holes and the hollow cavity constitute the ventilation path. The concrete pouring method according to claim 1.

3. The ventilation holes are arranged in a staggered pattern on the contact surface. The concrete pouring method according to claim 2.

4. The aforementioned ventilation path is From the contact surface, through the mounting surface, to the exposed surface, The concrete pouring method according to claim 1.

5. The aforementioned ventilation path is From the mounting surface, through the contact surface, to the exposed surface, The concrete pouring method according to claim 1.

6. The ventilation path has a rectangular cross-section, The concrete pouring method according to claim 4 or 5.

7. A concrete pouring method in which concrete is poured into a formwork and a chamfered surface is formed on the concrete using a chamfering strip, The air released from the concrete through the aforementioned molding is allowed to flow into the atmosphere. Concrete pouring method.

8. A chamfering tool used to pour concrete into a formwork and to create a chamfered surface on the concrete, The contact surface with the concrete, An exposed surface connected to the aforementioned contact surface and exposed to the atmosphere, A mounting surface connected to the contact surface and the exposed surface and attached to the formwork, It includes a ventilation path that directs air released from the concrete being poured toward the exposed surface, Menki.

9. The aforementioned chamfer strip is Multiple ventilation holes penetrating the aforementioned contact surface, A hollow cavity surrounded by the contact surface, the exposed surface, and the mounting surface, The ventilation holes and the hollow cavity constitute the ventilation path. The molding according to claim 8.

10. A molding process apparatus for forming ventilation holes that penetrate a predetermined surface of a molding, The frame of the aforementioned molding device, A support roller rotatably supported on the frame and supporting the chamfer strip, The system comprises a processing roller rotatably supported on the frame, on which a plurality of punches for forming the ventilation holes are arranged, Face wood processing equipment.

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