JP6827702B2 - Hollow structure board and manufacturing method of hollow structure board - Google Patents

Description

The present invention relates to a hollow structure plate and a method for manufacturing a hollow structure plate.

Conventionally, a cushioning material attached to the wall of a luggage compartment of a truck has been disclosed (see, for example, Patent Document 1). As such a cushioning material, a hollow structural plate having a core material having voids inside and skin layers provided on the front and back surfaces of the core material can be used (see, for example, Patent Document 2).

Japanese Patent No. 5204514 Japanese Unexamined Patent Publication No. 2004-9493

When the hollow structure plate is to be provided in the luggage compartment of a truck, for example, the hollow structure plate is not easy to handle and takes time and effort.

The present invention has been invented in view of the above-mentioned conventional problems, and an object of the present invention is to provide a hollow structure plate and a method for manufacturing a hollow structure plate which are easy to handle.

The invention according to claim 1 of the present invention is a horizontally long hollow structure plate attached to a wall or a frame, which has a core material having voids inside and skin layers provided on the front and back surfaces of the core material, respectively. The plate surface has a boundary portion extending in a direction intersecting the one direction and connecting the skin layers adjacent to both sides thereof, which divides a plurality of plate surface regions so as to line up in one direction along the plate surface. It is characterized in that a linear V-groove or notch that is recessed with respect to the plate surface is formed over the entire length of the plate surface in the longitudinal direction thereof.

The invention according to claim 2 of the present invention is a hollow structural plate to be attached to a wall or a frame, which has a core material having voids inside and skin layers provided on the front and back surfaces of the core material, respectively. At the first edge in one direction along the plate surface, the skin layer provided on one of the front and back surfaces of the core material is bent and has a resin pool at the inside corner thereof, and the skin layer is bent. Consists of the first end face at the first edge.

The invention according to claim 3 of the present invention is the manufacture of a resin hollow structural plate to be attached to a wall or a frame, which has a core material having voids inside and skin layers provided on the front and back surfaces of the core material, respectively. In the method, a plurality of divided hollow structure plates having the core material and the skin layer, which form a part of the hollow structure plate, are connected by welding so as to be arranged in one direction along the plate surface of the hollow structure plate. A step of pressing the heating blade against the first skin layer provided on one of the front and back surfaces of the core material to form a linear V-groove or notch recessed with respect to the plate surface. It is characterized by having.

The invention according to claim 4 of the present invention is to manufacture a hollow structural plate made of resin to be attached to a wall or a frame, which has a core material having voids inside and skin layers provided on the front and back surfaces of the core material, respectively. In the method, the first skin layer and the core material provided on one of the front and back surfaces of the core material are applied over a predetermined width at the first edge in one direction along the plate surface of the hollow structure plate. A step of forming a thin-walled portion by denting on the side of the second skin layer provided on the other side of the front and back surfaces of the core material, and an upright second skin layer including the thin-walled portion at the first edge. It is characterized by having a step of forming a first end face.

In the present invention, the hollow structure plate can be easily handled.

FIG. 1A is a perspective view including a cut surface of the hollow structure plate according to the first embodiment, and FIG. 1B is a cross-sectional view of the hollow structure plate of the same. FIG. 2 is a perspective view of the hollow structure plate in the developed state. 3A to 3C are cross-sectional views for explaining the end face treatment of the hollow structure plate of the same. 4A to 4D are cross-sectional views illustrating the formation of a V-groove in the hollow structure plate of the same. 5A to 5C are cross-sectional views illustrating a modified example of the V groove of the hollow structure plate of the same. FIG. 6 is a cross-sectional view of the same hollow structure plate in a folded state. FIG. 7A is a perspective view of an expanded state of the same hollow structure plate that is folded in a tri-folded state, and FIG. 7B is a cross-sectional view of the folded state of this example. FIG. 8A is a cross-sectional view for explaining the notch of the hollow structure plate according to the second embodiment, and FIG. 8B is a cross-sectional view for explaining the formation of the notch of the hollow structure plate of the same. FIG. 9A is a cross-sectional view for explaining the 90-degree bending of the hollow structure plate of the same, and FIG. 9B is a cross-sectional view for explaining the 180-degree folding of the hollow structure plate of the same. FIG. 10 is a cross-sectional view of the hollow structure plate in the developed state. FIG. 11 is a cross-sectional view of the same hollow structure plate in a folded state. FIG. 12 is a cross-sectional view of the hollow structure plate according to the third embodiment in an unfolded state. FIG. 13 is a cross-sectional view of the hollow structure plate of the above in a folded state. FIG. 14 is a cross-sectional view of the hollow structure plate according to the fourth embodiment in an unfolded state. FIG. 15 is a cross-sectional view of the same hollow structure plate in a folded state. FIG. 16 is a perspective view of the hollow structure plate according to the fifth embodiment. 17A to 17B are cross-sectional views illustrating the formation of the hollow structure plate of the same.

The hollow structure plate according to the present invention will be described with reference to the accompanying drawings. The hollow structure plate according to the present invention is mainly attached to a wall or a frame, for example, it is attached to a wall or frame of a truck luggage compartment and used as a cushioning material, or is attached to a building wall as a curing sheet. It is expected to be used.

Hereinafter, the hollow structure plate 1 and the manufacturing method thereof according to the first embodiment will be described with reference to FIGS. 1A to 7B. The hollow structure plate 1 according to the first embodiment has a core material 2 and a skin layer 3.

As shown in FIGS. 1A and 1B, the core material 2 is made of a resin having voids inside. As the core material 2, for example, a member having a honeycomb structure in which a large number of hexagonal hollow regions are densely arranged when viewed in the thickness direction (front and back directions) is preferably used. The thickness of the core material 2 is appropriately set, for example, between 5 mm, 10 mm, 5 mm and 10 mm, but may be less than 5 mm or 10 mm or more. The core material 2 is not limited to a member having such a hexagonal honeycomb structure, and various known core materials 2 can be appropriately used. Further, an unknown core material 2 can also be used, and various characteristics such as shape, thickness, weight, strength and rigidity of the core material 2 are not particularly limited. Further, the type of resin constituting the core material 2 is not particularly limited, and the core material 2 may be composed of one type or a plurality of types of resins, and various known resins can be appropriately used.

As shown in FIGS. 1A and 1B, the skin layer 3 is provided on the front and back surfaces of the core material 2, and is made of resin. The skin layer 3 provided on one of the front and back surfaces of the core material 2 is referred to as the first skin layer 31, and the skin layer 3 provided on the other side of the front and back surfaces of the core material 2 is referred to as the second skin layer 32. As the skin layer 3, various known skin layers 3 can be appropriately used. Further, an unknown skin layer 3 can also be used, and various characteristics such as shape, thickness, weight, strength and rigidity of the skin layer 3 are not particularly limited. Further, the type of resin constituting the skin layer 3 is not particularly limited, and the skin layer 3 may be composed of one type or a plurality of types of resins, and various known resins can be appropriately used.

As shown in FIG. 2, the hollow structure plate 1 according to the first embodiment is configured by connecting a plurality of divided hollow structure plates 10 forming a part thereof.

The divided hollow structure plate 10 is one in which the hollow structure plate 1 as a finished product is divided into a plurality of parts in one direction 13 along the plate surface 11. In the first embodiment, as shown in FIG. 2, the divided hollow structure plate 10 is divided into three divided hollow structure plates 10 in one direction 13, but the number of the divided hollow structure plates 10 is not particularly limited.

The divided hollow structure plate 10 has the same core material 2 and skin layer 3 shown in FIGS. 1A and 1B as the hollow structure plate 1 as a finished product has. However, the divided hollow structure plate 10 before being connected does not have the boundary portion 12 and the V groove 4 described later, and is basically a finished product other than the boundary portion 12 and the V groove 4 of the hollow structure plate 1. It has a core material 2 and a skin layer 3 in various parts.

As shown in FIG. 2, adjacent divided hollow structure plates 10 are connected to each other, and a plurality of connected divided hollow structure plates 10 are integrated to form a hollow structure plate 1 as a finished product. The boundary portion 12 is a portion where the adjacent divided hollow structure plates 10 are connected to each other.

The boundary portion 12 is divided so that the plate surface regions of the plurality of divided hollow structure plates 10 are lined up in one direction 13 along the plate surface 11 of the hollow structure plate 1, and the direction intersects the one direction 13 along the plate surface 11. It is growing to. In the first embodiment, the divided hollow structure plates 10 are arranged side by side in the longitudinal direction (one direction 13) of the hollow structure plate 1, but the parallel arrangement direction is not limited to the longitudinal direction.

The boundary portion 12 connects the skin layers 3 of the divided hollow structure plates 10 adjacent to each other with the boundary portion 12 interposed therebetween. That is, the adjacent divided hollow structure plates 10 are connected by welding, and in the first embodiment, the divided hollow structure plates 10 have two boundary portions 12 connecting the three divided hollow structure plates 10. As for the welding process, various known ones can be appropriately used.

At the boundary portion 12, at least the first skin layers 31 and the second skin layers 32 of the adjacent divided hollow structure plates 10 are connected by welding.

In welding, the opposing end faces of the adjacent divided hollow structure plates 10 are pressed against each other for welding. As a result, the welded portion rises as if the resin overflows, so the resin raised from the surface is cut off to flatten the surface. The boundary portion 12 is observed as a whitened portion of the resin, but it does not necessarily have to be a whitened portion.

In the first embodiment, the boundary portion 12 is formed in a straight line, but the boundary portion 12 does not have to be formed in a particularly linear shape. Further, the boundary portion 12 connects the adjacent divided hollow structure plates 10 to each other without a gap, but a portion in the longitudinal direction of the boundary portion 12 does not connect the adjacent divided hollow structure plates 10 to each other. There may be.

Further, the boundary portion 12 extends in the width direction 15 (short direction) intersecting the one direction 13 (longitudinal direction) orthogonally. That is, a plurality of divided hollow structure plates 10 can be connected to each other in one direction 13 to form a long hollow structure plate 1 from a short divided hollow structure plate 10. The boundary portion 12 does not have to extend in the width direction 15, and the direction in which the boundary portion 12 extends is not particularly limited.

In the first embodiment, the end face of the hollow structure plate 1 is subjected to end face treatment so as to be covered with the skin layer 3, and the core material 2 is covered with the skin layer 3. The end face treatment will be described with reference to FIGS. 3A to 3C.

As shown in FIG. 3A, the heating blade 71 is pressed against the first skin layer 31 over a predetermined width from the edge of the hollow structure plate 1 (the right end in FIG. 3A). The end surface of the heating blade 71 on the pressing side is a flat surface, but it does not have to be a flat surface. The heating blade 71 is heated to a temperature at which the pressed first skin layer 31 and the core material 2 can be melted. The heating blade 71 pressed against the first skin layer 31 pushes the first skin layer 31 and the core material 2 toward the second skin layer 32 and compresses them to form the thin portion 16 as shown in FIG. 3B. The thin portion 16 is composed of a compressed first skin layer 31, a core material 2, and a second skin layer 32. At this time, the portion of the thin-walled portion 16 on the side of the first skin layer 31 and the portion to be the new end face of the core material 2 are melted. Next, as shown in FIG. 3C, the thin-walled portion 16 is erected to fuse the melted portions together. As a result, the end face treatment for exposing the second skin layer 32 on the end face of the hollow structure plate 1 is performed. By this end face treatment, a resin pool is formed in the inside corner portion of the second skin layer 32 to be bent, and the effect of reliable welding and the effect of increasing the strength can be obtained. The end face treatment does not have to go through the steps shown in FIGS. 3A to 3C, and is not particularly limited.

In the first embodiment, end face treatment is applied to both ends of the hollow structure plate 1 in the longitudinal direction and both ends in the width direction 15, and the skin layer 3 is located on the end faces and the core material 2 is exposed. Absent. Such end face treatment is preferably applied to the end face of the hollow structure plate 1, but is not necessarily applied to the end face of the hollow structure plate 1. Further, it is not necessary that a part of the end face of the hollow structure plate 1 is subjected to the end face treatment and the remaining portion is not subjected to the end face treatment.

As shown in FIG. 2, the hollow structure plate 1 is formed with a linear V-groove 4 recessed with respect to the plate surface 11. The V-groove 4 is formed over the entire length of the plate surface 11 in the longitudinal direction thereof. As a result, the hollow structure plate 1 is configured to be bent in the V groove 4. In the first embodiment, the V-groove 4 is formed in the width direction 15 of the hollow structure plate 1 over the entire length of the plate surface 11, but the direction in which the longitudinal direction of the V-groove 4 faces is not limited. The process of forming the V-groove 4 will be described with reference to FIGS. 4A to 4D.

As shown in FIG. 4A, the heating blade 72 is pressed against the first skin layer 31 at the portion where the V-groove 4 of the hollow structure plate 1 is to be formed. The tip of the heating blade 72 on the pressing side has a V-shape sharpened at an angle smaller than 90 degrees, but the angle is not particularly limited. The heating blade 72 is heated to a temperature at which the pressed first skin layer 31 and the core material 2 can be melted. As shown in FIG. 4B, the heating blade 72 pressed against the first skin layer 31 pushes the tip portion toward the second skin layer 32 while melting the first skin layer 31 and the core material 2, and the second skin layer 31 is pressed. When the tip reaches the front of the skin layer 32, the progress of the heating blade 72 is stopped. As a result, the V-groove 4 as shown in FIG. 4C is formed. As shown in FIG. 4D, the hollow structure plate 1 is bent 90 degrees to the side where the V-groove 4 is formed.

Further, the radius of curvature of the outer surface of the hollow structure plate 1 when the hollow structure plate 1 is bent differs depending on the depth of the V groove 4, and the description will be made based on the modified examples having different radius of curvature shown in FIGS. 5A to 5C. To do.

In this modification, the heating blade 72 pushes the tip end toward the second skin layer 32 while melting the first skin layer 31 and the core material 2, and as shown in FIG. 5A, the second skin layer 32 is formed. Upon reaching it, the progress is stopped with the surface of the second skin layer 32 on the core material 2 side slightly melted. As a result, as shown in FIG. 5B, a V groove 4 deeper than the V groove 4 shown in FIG. 4C is formed. As shown in FIG. 5C, the hollow structure plate 1 is bent 90 degrees in the V groove 4. At this time, the radius of curvature R2 of the outer surface of the hollow structure plate 1 is formed smaller than the radius of curvature R1 of the outer surface of the V groove 4 shown in FIG. 4D. That is, the deeper the depth of the V-groove 4, the smaller the R of the outer surface of the bent portion of the hollow structure plate 1 when the hollow structure plate 1 is bent by the V-groove 4. As a result, when the hollow structure plate 1 is bent by the V groove 4, the radius of the outer surface of the bent portion of the hollow structure plate 1 can be reduced, and the appearance is improved. It should be noted that the deeper the depth of the V-groove 4, the thinner the thickness of the hollow structure plate 1 in the deepest part of the V-groove 4, and the more easily damage such as cutting occurs. The depth is set.

In the first embodiment, as shown in FIG. 2, the hollow structure plate 1 has two V-grooves 4 extending in the width direction 15 arranged side by side in the central portion in the longitudinal direction. The hollow structure plate 1 is bent 90 degrees at each V-groove 4, is folded 180 degrees at the center, and is folded in half as shown in FIG.

As a modified example of the folded state, as shown in FIG. 7A, two V-grooves 4 extending in the width direction 15 are arranged side by side at two intermediate locations that divide the hollow structure plate 1 into three equal parts in the longitudinal direction. There is. Regarding the two V-grooves 4a arranged side by side at the right side portion in FIG. 7A, the distance between the groove openings in the first skin layer 31 is almost the same as that shown in FIGS. 2 and 6, and is 0. For the two V-grooves 4b arranged side by side in the left side portion in FIG. 7A, the distance between the groove openings in the first skin layer 31 is the thickness t of the hollow structure plate 1. With such a V-groove 4, as shown in FIG. 7B, the hollow structure plate 1 is folded back twice at the intermediate portion and folded in a tri-folded state. In FIGS. 7A and 7B, the boundary portion 12 is omitted for convenience.

The hollow structure plate 1 shown in FIGS. 7A and 7B is folded in a tri-folded state. However, a V-groove 4 is formed in the hollow structure plate 1 in the same manner, and the hollow structure is folded in four or more. The plate 1 may be folded.

Further, in the hollow structure plate 1 that is folded in the two-folded state shown in FIGS. 2 and 6, two V grooves 4 are arranged side by side in a central portion that divides the hollow structure plate 1 into two equal parts in the longitudinal direction. As a result, in the hollow structure plate 1 in the folded state shown in FIG. 6, the upper bent piece 6a and the lower bent piece 6b have the same length, which improves the appearance and shortens the length in the folded state. I'm sorry. Further, in the hollow structure plate 1 that is folded in the tri-folded state shown in FIGS. 7A and 7B, two V-grooves 4 are arranged side by side at two intermediate locations that divide the hollow structure plate 1 into three equal parts in the longitudinal direction. ing. As a result, in the hollow structure plate 1 in the tri-folded state shown in FIG. 7B, the upper bent piece 6c, the middle bent piece 6d, and the lower bent piece 6e have the same length, which improves the appearance and is in the folded state. The length is short.

Similarly, when the hollow structure plate 1 is folded by the number of folds n of four or more, in the same manner, two hollow structure plates 1 are divided into n equal parts in the longitudinal direction at the intermediate (n-1) points. By arranging the V-grooves 4 in parallel, the appearance can be improved and the length in the folded state can be shortened. It should be noted that the locations where the two V-grooves 4 are arranged side by side are not the central portion in the longitudinal direction, the two intermediate locations divided into three equal parts, and the intermediate (n-1) location divided into n equal parts. It is also good and is not particularly limited. Further, the distance between the V grooves 4 is not limited.

In the first embodiment, the boundary portion 12 is provided so as to arrange a plurality of plate surface regions in one direction 13 along the plate surface 11. That is, a plurality of divided hollow structure plates 10 are connected by welding to form the hollow structure plate 1. As a result, it is possible to easily construct an integral long hollow structure plate 1 from a plurality of short divided hollow structure plates 10.

The length and width of the hollow structure plate 1 in the longitudinal direction are appropriately set depending on the location where the hollow structure plate 1 is provided. For example, when the hollow structure plate 1 is used as a cushioning material for the luggage compartment of a truck, the length of the hollow structure plate 1 in the longitudinal direction is set to the length around the luggage compartment of the hollow structure plate 1. The width is set to a length smaller than the height of the luggage compartment or the height of the luggage compartment.

Further, in the first embodiment, a linear V-groove 4 recessed with respect to the plate surface 11 is formed over the entire length of the plate surface 11. As a result, the hollow structure plate 1 is configured to be bent in the V groove 4, and the integrated long hollow structure plate 1 can be easily handled, for example, when the hollow structure plate 1 is transported. In particular, the trouble of providing a large number of vertical joint members shown in Patent Document 1 (Patent No. 5204514) can be saved.

Next, the hollow structure plate 1 according to the second embodiment will be described with reference to FIGS. 8A to 11. Since the second embodiment is almost the same as the first embodiment, description of the same part will be omitted, and different parts will be mainly described.

As shown in FIG. 8A, the hollow structure plate 1 of the second embodiment has a notch 5 formed in place of the V groove 4 in the hollow structure plate 1 of the first embodiment. Regarding the step of forming the notch 5, as shown in FIG. 8B, a cutting blade 73 such as a rotary blade is pressed against the first skin layer 31 of the portion where the notch 5 of the hollow structure plate 1 is to be formed, and the core material is formed. Shave 2 and skin layer 3 and make a notch 5. As shown in FIG. 8B, the cutting blade 73 pressed against the first skin layer 31 stops advancing when the tip portion reaches the front of the second skin layer 32. The hollow structure plate 1 is bent 90 degrees to the side opposite to the side where the notch 5 is formed as shown in FIG. 9A, or is bent 90 degrees to the side opposite to the side where the notch 5 is formed as shown in FIG. 9B. It is folded back 180 degrees.

In the second embodiment, as shown in FIG. 10, the hollow structure plate 1 is divided into six bent pieces (first bent pieces 61 to sixth bent pieces 66) by a notch 5 in the longitudinal direction. The first bent piece 61 and the second bent piece 62 are separated by a first notch 51. The second bent piece 62 and the third bent piece 63 are separated by a second cut 52a, a third cut 52b, and a first connecting piece 67a located between them. The third bent piece 63 and the fourth bent piece 64 are separated by a fourth cut 53a, a fifth cut 53b, and a second connecting piece 67b located between them. The fourth bent piece 64 and the fifth bent piece 65 are separated by a sixth cut 54a, a seventh cut 54b, and a third connecting piece 67c located between them. The fifth bent piece 65 and the sixth bent piece 66 are separated by an eighth notch 55a, a ninth notch 55b, and a fourth connecting piece 67d located between them. All the cuts 5 (51, 52a to b, 53a to b, 54a to b, 55a to b) are formed on the same side (upper side in FIG. 10) of the front and back surfaces of the hollow structure plate 1.

The length of the first connecting piece 67a (the length in the longitudinal direction of the hollow structure plate 1 and the same for the other connecting pieces) is set to the same length as the thickness of the hollow structure plate 1. The length of the second connecting piece 67b is set to be twice the thickness of the hollow structure plate 1. The length of the third connecting piece 67c is set to be three times the thickness of the hollow structure plate 1. The length of the fourth connecting piece 67d is set to be four times the thickness of the hollow structure plate 1.

In the second embodiment, first, at the place where the first cut 51 is provided, the first bent piece 61 and the second bent piece 62 are folded back 180 degrees to the opposite side of the first cut 51. Next, the second bent piece 62 and the first connecting piece 67a are bent 90 degrees to the opposite side of the second notch 52a. After that, in each of the third cuts 52b to 55b, the members (bent piece or connecting piece) on both sides are bent 90 degrees to the opposite side to the third cuts 52b to 55b, and finally as shown in FIG. It can be folded in six. The order in which the notches 5 are bent is not particularly limited.

The dimensions of the hollow structure plate 1 are appropriately set, and as an example, the dimensions of the first to sixth folded pieces having a length of about 2400 mm and a width of about 1200 mm can be mentioned, but of course, the dimensions are particularly limited to this. Not done.

Further, in the second embodiment, since the lengths of the connecting pieces are set as described above, the bent pieces 61 to 66 are vertically adjacent to each other in the state where the hollow structure plate 1 is folded as shown in FIG. It will come into surface contact with the bent pieces 61 to 66. As a result, the hollow structure plate 1 is prevented from being deformed by local contact in the folded state.

Next, the hollow structure plate 1 according to the third embodiment will be described with reference to FIGS. 12 to 13. Since the third embodiment is almost the same as the second embodiment, the same parts will be omitted and mainly different parts will be described.

As shown in FIG. 12, the hollow structure plate 1 of the third embodiment has a different position of the notch 5 as compared with the hollow structure plate 1 of the second embodiment (see FIG. 10).

In the third embodiment, as shown in FIG. 12, the first bent piece 61 and the second bent piece 62 are separated by the first notch 51c. The second bent piece 62 and the third bent piece 63 are separated by a second notch 52c. The third bent piece 63 and the fourth bent piece 64 are separated by a third notch 53c. The fourth bent piece 64 and the fifth bent piece 65 are separated by a fourth notch 54c. The fifth bent piece 65 and the sixth bent piece 66 are separated by a fifth notch 55c. In the third embodiment, the bent pieces 61 to 66 adjacent to each other are separated by one notch 5, and do not have a connecting piece.

The first cut 51c, the third cut 53c, and the fifth cut 55c are formed on the same side (upper side in FIG. 12) of the front and back surfaces of the hollow structure plate 1. Further, the second cut 52c and the fourth cut 54c are formed on the opposite side (lower side in FIG. 12) from the first cut 51c, the third cut 53c and the fifth cut 55c. That is, the first cut 51c to the fifth cut 55c are alternately and staggered.

In the third embodiment, the bent pieces 61 to 66 adjacent to each other are folded 180 degrees to the opposite side of the notch 5 at the place where each notch 5 is provided, and are folded in a six-fold state as shown in FIG. The order in which the notches 5 are bent is not particularly limited. Further, the dimensions of the hollow structure plate 1 are appropriately set as in the second embodiment, and are not particularly limited.

In the third embodiment as well, as in the second embodiment, the bent pieces 61 to 66 come into surface contact with the vertically adjacent bent pieces 61 to 66 in a state where the hollow structure plate 1 is folded as shown in FIG. .. As a result, the hollow structure plate 1 is prevented from being deformed by local contact in the folded state.

Further, in the second embodiment, as shown in FIG. 11, it is necessary to fold the hollow structure plate 1 in order from one end side in the longitudinal direction, but in the third embodiment, as shown in FIG. 13, the folding order is particularly restricted. Not done. Therefore, the bent pieces 61 to 66 can be bent at the same time at all the places where the first cut 51c to the fifth cut 55c are provided, and the folded state can be quickly changed from the unfolded state.

Next, the hollow structure plate 1 according to the fourth embodiment will be described with reference to FIGS. 14 to 15. Since the fourth embodiment is almost the same as the second embodiment, description of the same part will be omitted, and different parts will be mainly described.

As shown in FIG. 14, the hollow structure plate 1 of the fourth embodiment is mainly different from the hollow structure plate 1 of the second embodiment (see FIG. 10).

In the fourth embodiment, as shown in FIG. 14, the first bent piece 61 and the second bent piece 62 are separated by a notch 51d. The second bent piece 62 and the third bent piece 63 are separated by a notch 52d, a notch 52e, and a connecting piece 67e located between them. The third bent piece 63 and the fourth bent piece 64 are separated by a notch 53d, a notch 53e, and a connecting piece 67f located between them. The fourth bent piece 64 and the fifth bent piece 65 are separated by a notch 54d, a notch 54e, and a connecting piece 67g located between them. The fifth bent piece 65 and the sixth bent piece 66 are separated by a notch 55d. All the cuts 5 (51d, 52d to e, 53d to e, 54d to e, 55d) are formed on the same side (upper side in FIG. 14) of the front and back surfaces of the hollow structure plate 1.

The lengths of the connecting pieces 67e and 67g are set to be the same as the thickness of the hollow structure plate 1. The length of the connecting piece 67f is set to be four times the thickness of the hollow structure plate 1.

In the fourth embodiment, first, at the place where the notch 51d is provided, the first bent piece 61 and the second bent piece 62 are folded back 180 degrees to the side opposite to the notch 51d, and at the place where the notch 55d is provided. The fifth bent piece 65 and the sixth bent piece 66 are folded back 180 degrees to the opposite side of the notch 55d. The order of folding is not particularly limited.

Next, the second bent piece 62 and the connecting piece 67e are bent 90 degrees to the opposite side of the notch 52d, and the connecting piece 67e and the third bent piece 63 are bent 90 degrees to the opposite side of the notch 52e. Further, the fourth bent piece 64 and the connecting piece 67g are bent 90 degrees to the opposite side of the notch 54d, and the connecting piece 67g and the fifth bent piece 65 are bent 90 degrees to the opposite side to the notch 54e. The order of folding is not particularly limited.

Next, the third bent piece 63 and the connecting piece 67f are bent 90 degrees to the opposite side of the notch 53d, and the connecting piece 67f and the fourth bent piece 64 are bent 90 degrees to the opposite side of the notch 53e. The order of folding is not particularly limited.

In the fourth embodiment as well, as in the second embodiment, the bent pieces 61 to 66 come into surface contact with the vertically adjacent bent pieces 61 to 66 in a state where the hollow structure plate 1 is folded as shown in FIG. .. As a result, the hollow structure plate 1 is prevented from being deformed by local contact in the folded state.

Further, in the second embodiment, it is necessary to fold the hollow structure plate 1 in order from one end side in the longitudinal direction, but in the fourth embodiment, it can be folded from both end sides as shown in FIG. Therefore, as compared with the hollow structure plate 1 of the second embodiment, the folded state can be quickly changed from the unfolded state.

The hollow structure plate 1a and the manufacturing method thereof according to the fifth embodiment will be described with reference to FIGS. 16 to 17B. Hereinafter, the same parts as those in the first to fifth embodiments will be omitted, and different parts will be mainly described.

Similarly to the hollow structure plate 1 according to the first to fourth embodiments shown in FIGS. 1A and 1B, the hollow structure plate 1a according to the fifth embodiment also has the core material 2 having an internal void and the core material 2. It has skin layers 3 provided on the front and back sides, respectively. Since the description of the core material 2 and the skin layer 3 overlaps, the description thereof will be omitted.

In the fifth embodiment, the hollow structure plate 1a may be configured by connecting the split hollow structure plates 10 or may not be configured by connecting the split hollow structure plates 10. If the divided hollow structure plates 10 are not connected and configured, they do not have the boundary portion 12.

As shown in FIG. 16, in the hollow structure plate 1a, the skin layer 3 (second) provided on one of the front and back surfaces of the core material 2 at the first edge in one direction 13 along the plate surface 11. The skin layer 32) is bent and has a resin pool at the inside corner thereof, and the bent skin layer 3 constitutes the first end face 17 at the first edge.

A method for manufacturing the hollow structure plate 1a will be described. Similar to the first to fourth embodiments shown in FIGS. 4A to 4D or 5A to 5C, over a predetermined width at the first edge of one direction 13 along the plate surface 11 of the hollow structure plate 1a. , The heating blade (heating blade 72) is pressed against the first skin layer 31 provided on one of the front and back surfaces. Then, the step of forming the thin-walled portion by denting the first skin layer 31 and the core material 2 toward the second skin layer 32 provided on the other side of the front and back is carried out.

Then, as shown in FIG. 17A, a step of erecting the second skin layer 32 including the thin-walled portion to form the first end face 17 at the first edge is carried out. At this time, a resin pool is formed at the entrance corner between the upright portion and the base portion thereof, and the upright portion is surely welded to the base portion and its strength is increased. In particular, a large resin pool 33 is formed at the tip of the first skin layer 31 at the bent portion, and the strength is increased.

After that, the cutting blade 74 cuts the portion 19 located above the first skin layer 31. As a result, as shown in FIG. 17B, a hollow structure plate 1a having no portion located above the first skin layer 31 is formed.

By reducing the thickness of the thin portion, the radius of curvature of the outer surface of the bent portion in the state where the second skin layer 32 is erected becomes smaller, and the radius of curvature of the outer surface of the bent portion can be adjusted by the thickness of the thin portion. Is. For example, in order to set the radius of curvature R of the outer surface of the bent portion of the plate material having a thickness of 5 mm to 2.5, the depth of the groove is set to about 2/3 of the thickness of the plate material.

In this way, by setting the depth of the groove to about 2/3 of the thickness of the plate material, it is possible to form a radius of curvature R that is half the plate thickness. As a result, the gap between the plate materials becomes less noticeable.

Further, in forming the first end face 17, the first end face 17 may be formed by the same treatment as the above-mentioned end face treatment as shown in FIGS. 3A to 3C. Even in this case, a resin pool is formed at the entrance corner between the upright portion and the base portion thereof, and the upright portion is surely welded to the base portion and its strength is increased.

Further, the second end surface 18 may be formed in the same manner at the second end surface of the unidirectional direction 13 along the plate surface 11.

The hollow structure plate 1a of the fifth embodiment is mainly attached to a wall or a frame. For example, when it is attached to a wall of a luggage compartment of a truck and used as a cushioning material, a plurality of the hollow structure plates 1a may be attached without gaps.

Due to the manufacturing method of the hollow structure plate 1a, the surface of the first end face 17 (and the second end face 18 when having the second end face 18) is wavy in the width direction 15 by itself. It has become. That is, since the skin layer 3 (second skin layer 32) constituting the second end face 18 is partially connected to the hollow core material 2 in the width direction 15, uneven force occurs in the width direction 15. , The shape becomes slightly wavy. Therefore, when a plurality of hollow structure plates 1a are juxtaposed on the wall with their first end faces 17 abutting against the end faces of adjacent hollow structure plates 1a, they are butted against each other by being pressed against each other in the juxtaposed direction. The end face receives a force and comes into contact with no gap or only a small gap. This makes it possible to arrange a plurality of hollow structure plates 1a side by side without gaps. In particular, the trouble of providing a large number of vertical joint members shown in Patent Document 1 (Patent No. 5204514) can be saved.

The end face of the hollow structure plate 1a is a skin layer 3, a core material 2 and a resin reservoir, a fused portion and a resin reservoir, and a core material 2 from the outside, and the inside of the skin layer 3 is thinner than the skin layer 3. It is a core material 2. When the end face of the hollow structure 1a is pressed, the skin layer 3 is easily elastically deformed. When a strong impact is applied to the end face of the hollow structure 1a, the resin pool and the fused portion are hardened, so that the hollow structure 1a is not easily damaged. Since the skin layer 3 is easily elastically deformed, it may be restored and returned to its original state when a force such as pressing is released.

The hollow structure plate according to the present invention is not limited to one that can be attached to a wall or a frame. Further, the use of the hollow structure plate according to the present invention is not limited to the cushioning material and the curing sheet. Further, when the hollow structure plate according to the present invention is used as a cushioning material or a curing sheet, it may of course be provided in a place other than a truck or a building.

Also, if the rivet is sunk into the surface of the hollow structure so that the rivet does not come out from the surface of the hollow structure even if the hollow structure made of resin is riveted, the hollow structure can be attached to the wall or frame. Even when installed, there is no protruding part from the hollow structure, reducing the risk of injury to the operator.

1 Hollow structure board 1a Hollow structure board 10 Divided hollow structure board 11 Plate surface 12 Boundary part 13 One direction 15 Width direction 16 Thin wall part 2 Core material 3 Skin layer 31 First skin layer 32 Second skin layer 4 V groove 5 Notch 6a ~ E Bending piece 61-66 Bending piece 71-72 Heating blade 73-74 Cutting blade

Claims (6)

A horizontally long hollow structural plate to be attached to a wall or a frame, which has a core material having voids inside and skin layers provided on the front and back surfaces of the core material, respectively.
It has a boundary portion extending in a direction intersecting the one direction and connecting the skin layers adjacent to both sides thereof, which divides a plurality of board surface regions so as to be lined up in one direction along the board surface.
Cut was linear recessed relative to the plate surface is formed perpendicular to the plate surface over the entire length of the plate surface in the longitudinal direction of the plurality of cuts,
Of the plurality of cuts, the first cut separates the first bent piece and the second bent piece, the second cut separates the second bent piece and the first connecting piece, and the third cut divides the first. It is divided into 1 connecting piece and a 3rd bent piece, divided into the 3rd bent piece and the 2nd connecting piece by the 4th cut, and separated into the 2nd connecting piece and the 4th bent piece by the 5th cut. , The 6th cut separates the 4th bent piece and the 3rd connecting piece, the 7th cut separates the 3rd connecting piece and the 5th bent piece, and the 8th cut separates the 5th bent piece and the 5th connecting piece. It is divided into 4 connecting pieces, and is separated into the 4th connecting piece and the 6th bent piece by the 9th cut.
The first notch to the ninth notch are formed on the same side of the front and back surfaces of the hollow structure plate.
Wherein each of the first bending piece - the sixth bending piece is folded back 180 degrees from the bent piece adjacent, hollow structure plate, characterized in that it is configured to be foldable in a six fold state. A horizontally long hollow structural plate to be attached to a wall or a frame, which has a core material having voids inside and skin layers provided on the front and back surfaces of the core material, respectively.
It has a boundary portion extending in a direction intersecting the one direction and connecting the skin layers adjacent to both sides thereof, which divides a plurality of board surface regions so as to be lined up in one direction along the board surface.
A linear notch recessed with respect to the plate surface is formed perpendicular to the plate surface over the entire length of the plate surface in the longitudinal direction of the notch, and is divided into a plurality of bent pieces by the notch. ,
A hollow structure plate characterized in that an end surface of the folded piece in which the notch is formed is perpendicular to the plate surface in a state where the bent piece is folded 180 degrees with respect to the adjacent bent piece . A method for manufacturing a hollow structure plate made of resin to be attached to a wall or a frame, which has a core material having voids inside and skin layers provided on the front and back surfaces of the core material, respectively.
A step of connecting a plurality of divided hollow structure plates having the core material and the skin layer, which form a part of the hollow structure plate, by welding so as to line up in one direction along the plate surface of the hollow structure plate.
The cutting blade is pressed against the first skin layer provided on one of the front and back surfaces of the core material so that the portion on the second skin layer side provided on the other side of the front and back surfaces of the core material remains with respect to the plate surface. forming vertical incisions in which the linear recessed in respect to the plate surface,
A method for manufacturing a hollow structural plate, which comprises. A method for manufacturing a hollow structure plate made of resin to be attached to a wall or a frame, which has a core material having voids inside and skin layers provided on the front and back surfaces of the core material, respectively.
The first skin layer and the core material provided on one of the front and back surfaces of the core material are formed on the front and back surfaces of the core material over a predetermined width at the first edge in one direction along the plate surface of the hollow structure plate. A step of forming a thin portion by denting the other side of the core material on the side of the second skin layer and leaving the portion of the core material on the side of the second skin layer .
A step of erecting the second skin layer including the thin-walled portion to form a first end face at the first edge.
A step of cutting a portion located above the first skin layer with a cutting blade, and
A method for manufacturing a hollow structural plate, which comprises. A hollow structural plate to be attached to a wall or a frame, which has a core material having voids inside and skin layers provided on the front and back surfaces of the core material, respectively.
At the first edge in one direction along the plate surface, the skin layer provided on one of the front and back surfaces of the core material is bent and is a corner portion thereof, and a resin pool is formed through a part of the core material. And the curved skin layer constitutes the first end face at the first edge.
A hollow structural plate characterized in that the end surface of the curved skin layer is a cut surface. A horizontally long hollow structural plate to be attached to a wall or a frame, which has a core material having voids inside and skin layers provided on the front and back surfaces of the core material, respectively.
It has a boundary portion extending in a direction intersecting the one direction and connecting the skin layers adjacent to both sides thereof, which divides a plurality of board surface regions so as to be lined up in one direction along the board surface.
A linear notch recessed with respect to the plate surface is formed perpendicular to the plate surface over the entire length of the plate surface in the longitudinal direction of the plurality of cuts.
Of the plurality of cuts, the first cut separates the first bent piece and the second bent piece, the second cut separates the second bent piece and the third bent piece, and the third cut separates the first folded piece. It is divided into 3 fold pieces and 4 fold pieces, and is divided into the 4 fold pieces and the 5 fold pieces by the 4th cut, and is divided into the 5 fold pieces and the 6 fold pieces by the 5th cut. ,
The first cut, the third cut, and the fifth cut are formed on the same side of the front and back surfaces of the hollow structure plate, and the second cut and the fourth cut are the front and back surfaces of the hollow structure plate. Formed on the opposite side of the first cut, the third cut and the fifth cut,
A hollow structure plate characterized in that each of the first bent piece to the sixth bent piece is folded 180 degrees with respect to the adjacent bent piece and is foldable in a six-fold state.

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