JP2021011063A - Method for manufacturing curved plate material formed of plate material to which bending is imparted - Google Patents

Abstract

To provide a method for manufacturing a curved plate material formed of a plate material to which bending is imparted which can economically and efficiently manufacture a large-sized curved plate material such as an annular wooden strut.SOLUTION: A method for manufacturing a curved plate material formed of a plate material to which bending is imparted using a) a plurality of outer peripheral surface setting members 3 fixed to a stand board for working so as to define a projecting outer peripheral surface, b) a groove positioned inside each of the outer peripheral surface setting members, c) a plurality of inner peripheral surface formulation auxiliary members 5 facing each of the outer peripheral surface setting members with grooves and d) a plurality of wedges 6 used while being fit into the grooves includes: 1) a step of arranging a plate material 1 between each of the outer peripheral surface setting members and each of the inner peripheral surface formulation auxiliary members; 2) a step of driving the plurality of wedges into grooves between the arranged plate material and each of the inner peripheral surface formulation auxiliary member, and pressure-bonding the plate material to each of the outer peripheral surface setting members; 3) a step of holding the plate material in the state of (2) for a predetermined period of time, and fixing bending of the plate material; and 4) a step of removing the plurality of wedges from the groove, and taking out the manufactured curved plate material.SELECTED DRAWING: Figure 6

Description

The present invention relates to a method for producing a curved plate material composed of a single plate material to which bending is applied or a laminated material formed by laminating and adhering a plurality of plate materials.

Curved wood processing is cheaper in production cost than ordinary curved processing that cuts and cuts wood, is light and robust, and has the characteristics of being seamless and giving a beautiful design unique to the appearance. Mechanical curved wood that is powerfully and quickly processed using various curved wood machines such as type curved wood machines, push-type curved wood machines, lever type curved wood machines, press type curved wood machines, and bent at one end of the inner mold. Clamp one end of the processing material and the iron band, then clamp the other end of the material to be bent and the iron band, then gradually bend along the inner mold, and clamp the key points together with the inner mold. However, various processing methods such as hand-made curved wood that follows the work procedure of bending the whole have been adopted.

However, in these curved wood processing methods, it is necessary to prepare a concavo-convex mold for each curved shape to be manufactured, and aside from mass production of products having a certain shape, products are produced in the case of high-mix low-volume production. It is necessary to manufacture and prepare a different uneven mold each time, and there is a drawback that the product price rises due to an increase in production cost and setup man-hours.

Further, as a curved wood processing method that does not use a concavo-convex mold, a method using a plurality of clamp devices such as Japanese Patent Application Laid-Open No. 58-48088 (Patent Document 1) and Japanese Patent Application Laid-Open No. 2008-188871 (Patent Document 2) Proposed. In Japanese Patent Application Laid-Open No. 58-48088 (Patent Document 1), as shown in FIG. 11, a plywood coated with an adhesive is inserted into the sandwiching portion 13 between the plate 11 and the pressing plate 12 and attached. It is disclosed that the sandwiching portion 13 is formed in an arbitrary arc shape by adjusting the expansion adjustment of the base 14, and pressure is applied by the pressing plate 12 to appropriately bend the plywood. Further, in Japanese Patent Application Laid-Open No. 2008-188871 (Patent Document 2), as shown in FIG. 12, a plurality of curved wood tools 22 in which the target commercially available clamp 21 is incorporated at an arbitrary position on the work table T are provided. It is disclosed that the material M for fixing and bending is sandwiched between the target commercially available clamps 21 of a plurality of curved wood tools 22 to form a desired curved shape or curved meander shape.

However, in these curved wood processing methods, it is necessary to prepare a large number of clamp devices when producing a large product, aside from the production of a small product, which increases the production cost and the setup man-hours. There is a drawback that the product price rises due to this.

On the other hand, the inventors of the present invention have previously filed a patent application for a wooden trailer house that is not easily damaged by vibration / shock and wind pressure during towing / transporting, and a method for manufacturing the wooden trailer house, and patented it as Patent No. 6497568 (Patent Document 3). I just got it. As shown in FIG. 13, in this wooden trailer house 31, the wooden living part 32 arranges a plurality of annular wooden columns formed by bending wooden columns in the front-rear direction, and directly or indirectly to the chassis. It is provided with a central skeleton portion 33 formed by being fixedly fixed, and flexibility can be imparted to the entire wooden living portion 32.

However, it is difficult to economically and efficiently manufacture a large curved plate material such as the annular wooden support by the conventional curved wood processing method using the uneven type or a plurality of clamp devices as described above. is there.

The present inventors have made the present invention by diligently studying a method capable of economically and efficiently manufacturing a large curved plate material including an annular wooden support of the wooden trailer house.

Jikken Sho 58-48088 Japanese Unexamined Patent Publication No. 2008-188871 Japanese Patent No. 6497568

An object of the present invention to be solved is to provide a method for manufacturing a curved plate material made of a bent plate material, which can economically and efficiently produce a large curved plate material such as an annular wooden support. is there.

The gist of the present invention is shown below.
(1) A method for manufacturing a curved plate material made of a plate material to which bending is applied.
As a tool
a) A plurality of outer peripheral surface setting members fixed to a work base so as to define a convex outer peripheral surface of the curved plate material to be manufactured.
b) A groove provided in the work base so as to be located inside each outer peripheral surface setting member.
c) A plurality of inner peripheral surface forming auxiliary members fixed to the work base so as to face each outer peripheral surface setting member across the groove, and d) used by fitting into the groove. Using multiple wedges
1) A step of arranging the plate material between each outer peripheral surface setting member and each inner peripheral surface formulation auxiliary member.
2) A step of driving the plurality of wedges into the grooves between the arranged plate material and the inner peripheral surface forming auxiliary members, and crimping the plate material toward the outer peripheral surface setting members.
3) A manufacturing method including a step of holding the plate material in the state of 2) for a predetermined time to fix the bending of the plate material, and 4) a step of removing the plurality of wedges from the groove and taking out the manufactured curved plate material.
(2) The manufacturing method according to (1), wherein the bent plate material is a single plate material.
(3) The bent plate material is a laminated wood formed by laminating and adhering a plurality of plate materials.
Following the steps 1) to 3) above,
4') A step of removing the plurality of wedges from the groove and applying an adhesive to the concave inner peripheral surface of the manufactured curved plate material.
5') A step of arranging another plate material between the concave inner peripheral surface of the curved plate material and each of the inner peripheral surface forming auxiliary members.
6') The plurality of wedges are driven into the grooves between the other plate materials arranged and the inner peripheral surface forming auxiliary members, respectively, and the curved plate materials and the other plate materials are set on the outer peripheral surfaces. The process of crimping toward a member,
7') The step of holding in the state of 6') for a predetermined time, fixing the bending of the other plate material, and adhering the curved plate material and the other plate material.
8') The steps of 4') to 7') are repeated a predetermined number of times to form a curved plate material composed of a plurality of plate materials, and 9') the plurality of wedges are removed from the groove to produce a plurality of sheets. The manufacturing method according to (1), which comprises a step of taking out a curved plate material made of a plate material.
(4) The wedge is formed of a plate material having a substantially uniform thickness, and has a right-angled triangular shape with an acute angle of θ degrees at the tip.
The surface of the inner peripheral surface forming auxiliary member on the outer peripheral surface setting member side is a plane inclined by (90-θ) degrees with respect to the vertical surface.
In the step 2) or 6'), the plurality of wedges are driven so that the surface sandwiched between the right angle and the acute angle θ is on the outer peripheral surface setting member side. The production method according to any one of 1) to (3).
(5) The surface of the outer peripheral surface setting member on the inner peripheral surface forming auxiliary member side is a curved surface corresponding to the shape of the convex outer peripheral surface of the curved plate material to be manufactured (1). The production method according to any one of (4).
(6) The surface of the wedge driven in the step 2) on the outer peripheral surface setting member side is a curved surface corresponding to the shape of the convex inner peripheral surface of the curved plate material to be manufactured. , (1) to (5).
(7) The production method according to any one of (1) to (6), wherein the curved portion of the plate material and / or the other plate material is preheated before bending is applied.

In the method for manufacturing a curved plate material made of a plate material to which bending of the present invention is applied (hereinafter, referred to as "the present invention"),
〇 Multiple pairs of outer peripheral surface setting members and inner peripheral surface formulation auxiliary members fixed on the work platform 〇 Between each pair of outer peripheral surface setting members and inner peripheral surface formulation auxiliary members, the work platform is provided. Grooves 〇 Using wedges that are used by fitting into each groove as a tool,
A large curved plate material can be economically and efficiently manufactured by arranging the plate material between a plurality of pairs of the outer peripheral surface setting member and the inner peripheral surface formulation auxiliary member and driving a wedge into each groove.

FIG. 1 is a schematic perspective view showing a state of the tool before step 1). FIG. 2 shows the state of the tool before the step 1), and is a schematic view of a cross section perpendicular to the longitudinal direction of the plate material. FIG. 3 is a schematic view of a cross section perpendicular to the longitudinal direction of the plate material, showing the state of the tool and the plate material in the step 1). FIG. 4 is a schematic view of a cross section perpendicular to the longitudinal direction of the plate material, showing the state of the tool and the plate material in step 2). FIG. 5 is a schematic view showing the state of the tool and the plate material in the step 1) when viewed from above the work base. FIG. 6 is a schematic view showing the state of the tool and the plate material in the step 2) when viewed from above the work base. FIG. 7 is a schematic cross-sectional view showing the state of the tool and the manufactured curved plate material in step 4') in the direction perpendicular to the cross section of the curved plate material. FIG. 8 is a schematic cross-sectional view showing the state of the tool, the manufactured curved plate material, and the other plate material in step 5') in the direction perpendicular to the cross section of the curved plate material and the other plate material. FIG. 9 is a schematic cross-sectional view showing the state of the tool, the manufactured curved plate material, and the other plate material in the step 6') in the direction perpendicular to the cross section of the curved plate material and the other plate material. FIG. 10 is a schematic view of the work base viewed from above, showing the state of the tool, the manufactured curved plate material, and other plate materials in step 6'). FIG. 11 is FIG. 2 of Japanese Patent Application Laid-Open No. 58-48088 (Patent Document 1) showing a curved wood processing method using a plurality of conventional clamp devices. FIG. 12 is FIG. 11 of Japanese Patent Application Laid-Open No. 2008-188871 (Patent Document 2) showing a curved wood processing method using a plurality of conventional clamp devices. FIG. 13 is FIG. 1 of Japanese Patent No. 6497568 (Patent Document 3) showing a wooden trailer house patented by the present inventor.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings, but the present invention is not limited thereto.

<Main features of the present invention>
First, the main features of the present invention will be described.

The present invention is a tool.
〇 Multiple pairs of outer peripheral surface setting members and inner peripheral surface formulation auxiliary members fixed on the work platform 〇 Between each pair of outer peripheral surface setting members and inner peripheral surface formulation auxiliary members, the work platform is provided. Grooves 〇 This is performed using wedges that are used by fitting into each groove, and is an excellent product that can economically and efficiently manufacture large curved plate materials such as annular wooden columns.

That is, since the present invention can be easily performed on-site by using waste wood, scraps, etc. without using a concavo-convex type different for each product or a plurality of clamp devices, an annular wooden support can be used. Such a large curved plate material can be manufactured economically and efficiently.

The present invention will be described with reference to FIGS. 1 to 10.

1 to 6 show the first embodiment of the present invention, and FIGS. 7 to 10 show the second embodiment of the present invention.

<Tool used in the present invention>
As shown in FIGS. 1 to 10, in the present invention, as a tool,
a) A plurality of outer peripheral surface setting members 3 fixed to the work base 2 so as to define the convex outer peripheral surface of the curved plate material to be manufactured.
b) Grooves 4 provided on the work base 2 so as to be located inside each outer peripheral surface setting member 3.
c) Used by fitting into a plurality of inner peripheral surface forming auxiliary members 5 fixed to the work base 2 and d) grooves 4 so as to face each outer peripheral surface setting member 3 across the groove 4. Multiple wedges to be made 6
Is used.

The work base 2 is preferably made as flat as possible from the viewpoint of workability and the like, and is made of wood because the outer peripheral surface setting member 3 and the inner peripheral surface formulation auxiliary member 5 can be easily fixed and the groove 4 can be easily formed. Is preferable. The outer peripheral surface setting member 3 and the inner peripheral surface forming auxiliary member 5 can be appropriately fixed to the work base 2 by using fixing means such as screws, nails, and adhesives.

Since the wedge 6 is used by being fitted into the groove 4, the widths of the wedge 6 and the groove 4 are preferably substantially uniform and even. Further, since the plate member 1 can be uniformly crimped toward the outer peripheral surface setting member 3, the shape of the wedge 6 is a right triangle with an acute angle of θ degree at the tip, and the outer peripheral surface setting member 3 of the inner peripheral surface formulation auxiliary member 5 is formed. It is preferable that the side surface is a plane inclined by (90-θ) degrees with respect to the vertical plane. The tip angle θ degree of the wedge 6 is preferably reduced when a large force is required to crimp the plate member 1 to the outer peripheral surface setting member 3, but is usually in the range of 5 to 15 degrees.

The outer peripheral surface setting member 3, the inner peripheral surface formulation auxiliary member 5, and the wedge 6 can be created by using waste wood, scraps, and the like.

The surface of the outer peripheral surface setting member 3 on the inner peripheral surface forming auxiliary member 5 side and the surface of the wedge 6 to be driven on the outer peripheral surface setting member 3 side are curved surfaces corresponding to the shape of the convex outer peripheral surface of the curved plate material to be manufactured. Is preferable.

<First Embodiment of the present invention>
The first embodiment of the present invention shown in FIGS. 1 to 6 is for producing a curved plate material made of a single plate material to which bending is applied, and the above-mentioned tool is used.
1) As shown in FIGS. 3 and 5, a step of arranging the plate material 1 between each outer peripheral surface setting member 3 and each inner peripheral surface formulation auxiliary member 5.
2) As shown in FIGS. 4 and 6, a plurality of wedges 6 are driven into the grooves 4 between the arranged plate material 1 and each inner peripheral surface forming auxiliary member 5, and the plate material 1 is set on each outer peripheral surface. A step of crimping toward the member 3 and a step of 3) holding in the state of 2) above for a predetermined time to fix the bending of the plate material 1.
4) This is performed by removing a plurality of wedges 6 from the groove 4 and taking out the manufactured curved plate material.

When the plate material 1 is thick, it is preferable to heat the plate material 1 in advance before applying bending in order to soften the cellulose and make it easy to bend. When the plate material 1 is small, the whole may be heated, but when the plate material 1 is large, it is preferable to heat the curved portion in consideration of efficiency, economy, and heating equipment. The plate material 1 can be heated by steam (immersed in hot water or steamed with high-temperature steam), microwave (sufficiently absorbs water and heat-treated with microwave), or the like.

<Second Embodiment of the Invention>
The second embodiment of the present invention shown in FIGS. 7 to 10 is for producing a curved plate material made of laminated wood formed by laminating and adhering a plurality of bent plate materials, and using the above-mentioned tool. After manufacturing the curved plate material in the above steps 1) to 3) as in the first embodiment,
4') As shown in FIG. 7, a step of removing a plurality of wedges 6 from the groove 4 and applying the adhesive 8 to the concave inner peripheral surface of the manufactured curved plate material 7.
5') As shown in FIG. 8, a step of arranging another plate member 9 between the concave inner peripheral surface of the curved plate member 7 and each inner peripheral surface forming auxiliary member 5.
6') As shown in FIGS. 8 and 9, a plurality of wedges 6 are driven into the grooves 4 between the other arranged plate members 9 and the inner peripheral surface forming auxiliary members 5, respectively, and the curved plate members 7 and A process of crimping another plate member 9 toward each outer peripheral surface setting member 3.
7') The step of holding in the state of 6') for a predetermined time, fixing the bending of the other plate material 9, and adhering the curved plate material 7 and the other plate material 9.
8') The step of repeating the steps of 4') to 7') a predetermined number of times to obtain a curved plate material composed of a plurality of plate materials.
9') This is performed by removing a plurality of wedges from the groove 4 and taking out a curved plate material composed of the manufactured plurality of plate materials.

As with the plate material 1, when the thickness of the other plate material 9 is thick, it is preferable to heat the other plate material 9 in advance before bending the cellulose in order to soften the cellulose and make it easy to bend.

The adhesive 8 includes aqueous emulsion-based adhesives such as polyvinyl acetate-based emulsions, ethylene-vinyl acetate copolymer-based emulsions and acrylic emulsions, and latexes such as styrene-butadiene copolymer latex, which are generally used as woodworking adhesives. It is possible to use based adhesives, PVA adhesives, isobutylene-maleic anhydride copolymer adhesives, polyurethane adhesives, urea resin adhesives, melamine resin adhesives, urea melamine copolymer resin adhesives, etc. it can. The adhesive is selected in consideration of water resistance, heat resistance, initial adhesive strength, safety, etc., depending on the use of the curved plate material.

<Effects of the present invention>
As described above, the method for producing a curved plate material of the present invention can economically and efficiently produce various large-sized curved plate materials such as the annular wooden support of the wooden trailer house.

1: Plate material 2: Work base 3: Outer peripheral surface setting member 4: Groove 5: Inner peripheral surface formulation auxiliary member 6: Wedge 7: Curved plate material (manufactured) 8: Adhesive 9: Other plate material 11: This plate 12: Pressing plate 13: Holding part 14: Mounting base 21: Target commercial clamp 22: Curved wood tool T: Work base M: Bending material 31: Wooden trailer house 32: Wooden living part 33: Central skeleton part

The gist of the present invention is shown below.
(1) A method for manufacturing a curved plate material made of a plate material to which bending is applied.
As a tool
a) A plurality of outer peripheral surface setting members fixed to a work base so as to define a convex outer peripheral surface of the curved plate material to be manufactured.
b) A groove provided in the work base so as to be located inside each outer peripheral surface setting member.
c) A plurality of inner peripheral surface forming auxiliary members fixed to the work base so as to face each outer peripheral surface setting member across the groove, and d) used by fitting into the groove. Using multiple wedges
1) A step of arranging the plate material between each outer peripheral surface setting member and each inner peripheral surface formulation auxiliary member.
2) A step of driving the plurality of wedges into the grooves between the arranged plate material and the inner peripheral surface forming auxiliary members, and crimping the plate material toward the outer peripheral surface setting members.
3) A manufacturing method including a step of holding the plate material in the state of 2) for a predetermined time to fix the bending of the plate material, and 4) a step of removing the plurality of wedges from the groove and taking out the manufactured curved plate material.
(2) The manufacturing method according to (1), wherein the bent plate material is a single plate material.
(3) The wedge is formed of a plate material having a substantially uniform thickness, and has a right-angled triangular shape with an acute angle of θ degrees at the tip.
The surface of the inner peripheral surface forming auxiliary member on the outer peripheral surface setting member side is a plane inclined by (90-θ) degrees with respect to the vertical surface.
In the step (2), the plurality of wedges are driven so that the surface sandwiched between the right angle and the acute angle θ is on the outer peripheral surface setting member side, respectively. ).
( 4 ) The bent plate material is a laminated wood formed by laminating and adhering a plurality of plate materials.
Following the steps 1) to 3) above,
4') A step of removing the plurality of wedges from the groove and applying an adhesive to the concave inner peripheral surface of the manufactured curved plate material.
5') A step of arranging another plate material between the concave inner peripheral surface of the curved plate material and each of the inner peripheral surface forming auxiliary members.
6') The plurality of wedges are driven into the grooves between the other plate materials arranged and the inner peripheral surface forming auxiliary members, respectively, and the curved plate materials and the other plate materials are set on the outer peripheral surfaces. The process of crimping toward a member,
7') The step of holding in the state of 6') for a predetermined time, fixing the bending of the other plate material, and adhering the curved plate material and the other plate material.
8') The steps of 4') to 7') are repeated a predetermined number of times to form a curved plate material composed of a plurality of plate materials, and 9') the plurality of wedges are removed from the groove to produce a plurality of sheets. The manufacturing method according to (1), which comprises a step of taking out a curved plate material made of a plate material.
( 5 ) The wedge is formed of a plate material having a substantially uniform thickness, and has a right-angled triangular shape with an acute angle of θ degrees at the tip.
The surface of the inner peripheral surface forming auxiliary member on the outer peripheral surface setting member side is a plane inclined by (90-θ) degrees with respect to the vertical surface.
In the step 2) or 6'), the plurality of wedges are driven so that the surface sandwiched between the right angle and the acute angle θ is on the outer peripheral surface setting member side. The manufacturing method according to 4) .
( 6 ) The surface of the outer peripheral surface setting member on the inner peripheral surface forming auxiliary member side is a curved surface corresponding to the shape of the convex outer peripheral surface of the curved plate material to be manufactured (1). The manufacturing method according to any one of ( 5 ).
( 7 ) The surface of the wedge driven in the step 2) on the outer peripheral surface setting member side is a curved surface corresponding to the shape of the convex inner peripheral surface of the curved plate material to be manufactured. , (1) to ( 6 ).
( 8 ) The production method according to any one of (1) to ( 7 ), wherein the curved portion of the plate material and / or the other plate material is preheated before bending is applied.

Claims (7)

It is a method of manufacturing a curved plate material made of a plate material to which bending is applied.
As a tool
a) A plurality of outer peripheral surface setting members fixed to a work base so as to define a convex outer peripheral surface of the curved plate material to be manufactured.
b) A groove provided in the work base so as to be located inside each outer peripheral surface setting member.
c) A plurality of inner peripheral surface forming auxiliary members fixed to the work base so as to face each outer peripheral surface setting member across the groove, and d) used by fitting into the groove. Using multiple wedges
1) A step of arranging the plate material between each outer peripheral surface setting member and each inner peripheral surface formulation auxiliary member.
2) A step of driving the plurality of wedges into the grooves between the arranged plate material and the inner peripheral surface forming auxiliary members, and crimping the plate material toward the outer peripheral surface setting members.
3) A manufacturing method including a step of holding the plate material in the state of 2) for a predetermined time to fix the bending of the plate material, and 4) a step of removing the plurality of wedges from the groove and taking out the manufactured curved plate material. The manufacturing method according to claim 1, wherein the bent plate material is a single plate material. The bent plate material is an laminated wood formed by laminating and adhering a plurality of plate materials.
Following the steps 1) to 3) above,
4') A step of removing the plurality of wedges from the groove and applying an adhesive to the concave inner peripheral surface of the manufactured curved plate material.
5') A step of arranging another plate material between the concave inner peripheral surface of the curved plate material and each of the inner peripheral surface forming auxiliary members.
6') The plurality of wedges are driven into the grooves between the other plate materials arranged and the inner peripheral surface forming auxiliary members, respectively, and the curved plate materials and the other plate materials are set on the outer peripheral surfaces. The process of crimping toward a member,
7') The step of holding in the state of 6') for a predetermined time, fixing the bending of the other plate material, and adhering the curved plate material and the other plate material.
8') The steps of 4') to 7') are repeated a predetermined number of times to form a curved plate material composed of a plurality of plate materials, and 9') the plurality of wedges are removed from the groove to produce a plurality of sheets. The manufacturing method according to claim 1, further comprising a step of taking out a curved plate material made of a plate material. The wedge is formed of a plate having a substantially uniform thickness, and has a right-angled triangular shape with an acute angle of θ degrees at the tip.
The surface of the inner peripheral surface forming auxiliary member on the outer peripheral surface setting member side is a plane inclined by (90-θ) degrees with respect to the vertical surface.
The claim is characterized in that, in the step 2) or 6'), the plurality of wedges are driven so that the surface sandwiched between the right angle and the acute angle θ is on the outer peripheral surface setting member side. Item 8. The production method according to any one of Items 1 to 3. Claims 1 to 4, wherein the surface of the outer peripheral surface setting member on the inner peripheral surface forming auxiliary member side is a curved surface corresponding to the shape of the convex outer peripheral surface of the curved plate material to be manufactured. The manufacturing method according to any one. The present invention is characterized in that the surface of the wedge driven in the step 2) on the outer peripheral surface setting member side is a curved surface corresponding to the shape of the convex inner peripheral surface of the curved plate material to be manufactured. The production method according to any one of 1 to 5. The production method according to any one of claims 1 to 6, wherein the curved portion of the plate material and / or the other plate material is preheated before bending is applied.

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