JP7232635B2 - Chamfered box - Google Patents

Description

TECHNICAL FIELD The present invention relates to a box having chamfered walls inclined with respect to side walls and end walls so that the body has an octagonal or hexagonal cylindrical shape.

As this type of chamfered box, Patent Document 1 below discloses a pair of side walls 1 and end walls 2, a chamfered wall 3 inclined at four corners, and a joint connecting them, as shown in FIG. 13 (13A). By folding the piece 4 along the vertical ruled lines a and b of the boundary, the body 10 is formed in an octagonal cylindrical shape, and the inner flap 5 and the outer flap 6 are connected to the upper and lower ends of the side wall 1 and the end wall 2. are sequentially folded along the boundary horizontal ruled lines c and d to form the lid portions 20 and 30 on the bottom surface and the top surface in a closed state.

In such a chamfered box, it is possible to reduce the used area of the material while maintaining the compressive strength of the rectangular parallelepiped box.

In the chamfered box, the side walls 1 and the end walls 2 have width surfaces and long surfaces, respectively. A pair of outer flaps 6 cover the entire bottom surface and top surface with a gap between the side edge of the end wall 5 and the inner surface of the end wall 2 .

When assembling the above chamfered box, as shown in FIG. 13 (13B), in a blank state, the side wall 1 and the end wall 2 are wound around the mandrel M to form the body 10. If the body 10 is removed from the mandrel M, the shape of the body 10 will not be maintained in the shape of an octagonal cylinder, and the body 10 may be distorted. It is necessary to fold the inner flap 5 and the outer flap 6 sequentially and fix them.

For this reason, in the manufacturing process, the passage piece 4 cannot be attached to the opposite end in a flat folded state, and the flexo folder gluer cannot be used. A dedicated box making machine is required.

On the other hand, as shown in FIG. 14, Patent Document 2 below describes a packaging method in which an assembly of aligned PET bottles B is used instead of a mandrel.

In this method, the trunk portion 10 is formed in a rectangular tubular shape, and the collection of PET bottles B is covered with a chamfered box using the shoulder portion of the PET bottle B as a guide surface. The chamfered walls 3 at the four corners of the body part 10 are inclined by pushing the body from the inside, and then the inner flaps 5 and outer flaps 6 on the bottom surface and the top surface are folded and sealed.

Further, in Patent Document 3 below, as shown in FIG. 15 , both side edges of a pair of inner flaps 5 protrude outward from the extension line of the vertical ruled line a, and are attached to the inner surfaces of the end wall 2 and the chamfered wall 3. By abutting, the outer flap 6 is folded over the inner flap 5 while maintaining the body portion 10 in the shape of an octagonal cylinder without depending on the mandrel or the package to be packaged, and the lid portions 20 and 30 on the bottom and top surfaces are folded. A chamfered box is described that allows the formation of a

In this chamfered box, when the inner flaps 5 are folded inward from the pair of side walls 1, there is a gap between the tip edges of the pair of inner flaps 5, and the tip edges of the pair of outer flaps 6 are butted against each other. , and sealed with tape or the like.

JP-A-4-239442 JP 2014-5072 A JP 2017-61341 A

However, even in the case of the chamfered box described in Patent Document 3, the interval between the pair of side walls 1 facing each other is not determined when the inner flap 5 is folded inward from the pair of side walls 1 during assembly. There is a possibility that the shape of the body 10 at the time may not be stable.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a chamfered box that can be easily assembled into a predetermined shape and packaged without using a mandrel or the like, and that can be manufactured using a flexo folder gluer. be.

In order to solve the above-mentioned problems, the present invention has a square tube-shaped body with a pair of side walls and end walls, a chamfered wall inclined at a diagonal position, and a connecting piece connecting these with a vertical ruled line serving as a ridgeline. Inner flaps and outer flaps are continuously provided on the side wall and the end wall via horizontal ruled lines, respectively, and the inner flaps and the outer flaps are sequentially folded along the horizontal ruled lines. In the chamfered box in which the lid is formed,
In the lid portion, the tip edges of the pair of inner flaps are in contact with each other at least partially, and both side edges of the pair of inner flaps protrude outward from extension lines of vertical ruled lines on both sides of the side walls, contacting the inner surface of the boundary between the end wall and the outer flap,
Both side edges of the outer flap are positioned inside the extension lines of the vertical ruled lines on both sides of the end wall, and the width of the outer flap is set narrower than the width of the end wall,
It is assembled from a flat folded state centering on the folding line at the diagonal position among the vertical ruled lines on both sides of the end wall,
Insertion pieces project from both sides of the tip of the pair of outer flaps, and insertion holes are formed in the pair of inner flaps,
The outer flap holds the inner flap in a state in which it is bent inward from the side wall, and the insertion piece is inserted into the insertion hole and is prevented from coming out of the insertion hole, thereby closing the lid. It was supposed to be maintained in the same condition.

Further, in the lid portion, the tip edges of the pair of inner flaps are butted against each other, or the notch portions of the tip edges of the pair of inner flaps are engaged with each other, and the portions facing the tip edges are overlapped. .

Further, the pair of outer flaps has a center fold line extending in the width direction at an intermediate portion in the extending direction from the end wall,
When the insertion piece is inserted into the insertion hole while the outer flap is bent about the center fold line, the bending at the center fold line is extended to prevent the insertion piece from coming out of the insertion hole. It was supposed to be done.

In the chamfered box according to the present invention, when the inner flaps are folded inward from the side walls and the tip edges of the pair of inner flaps are brought into contact with each other, the dimension between the opposing side walls is determined, and both side edges of the inner flaps are attached to the end walls. The dimension between the end walls which abut against the inner surface of the boundary with the outer flap of the and are opposed is also determined.

For this reason, the chamfered wall is inclined at an angle according to the design with respect to the side wall and the end wall, and the body part has a predetermined octagonal or hexagonal cylindrical shape and is stable, so no mandrel is required. can also be assembled manually.

In addition, the edges on both sides of the outer flap are located inside the extension lines of the vertical creases on both sides of the end wall, so it can be folded flat. It can be easily and quickly assembled from the folded state without the need.

1 is a diagram showing a blank of a first embodiment of a chamfered box according to the present invention; FIG. The perspective view which shows a folding state same as the above. The perspective view which shows an assembly process same as the above in an upside-down state. The perspective view which shows an assembly process same as the above in an upside-down state. A perspective view from below showing an assembled state of the same. A perspective view from above showing an assembled state of the same. A diagram showing a blank of the second embodiment of the chamfered box according to the present invention. The perspective view which shows a folding state same as the above. The perspective view which shows an assembly process same as the above in an upside-down state. The perspective view which shows an assembly process same as the above in an upside-down state. A perspective view from below showing an assembled state of the same. A perspective view from above showing an assembled state of the same. In the chamfered box described in Patent Document 1, (13A) a perspective view from above showing an assembled state, (13B) a schematic diagram showing an assembling process using a mandrel The perspective view which shows the product packaging process by the chamfered box described in patent document 2. A perspective view from above showing an assembled state of the chamfered box described in Patent Document 3.

A first embodiment of a chamfered box according to the present invention will be described with reference to FIGS. 1 to 6. FIG.

The chamfered box is assembled from cardboard blanks with the corrugations oriented vertically as shown in FIG. This blank is composed of a body portion 10 forming a peripheral surface, a lid portion 20 forming a bottom surface, and a lid portion 30 forming a top surface.

In the trunk portion 10, a long side wall 1 and a width end wall 2 are alternately arranged in pairs with a chamfered wall 3 interposed therebetween. , and the other end of the trunk portion 10 is connected to the side end of the end wall 2 by a succession piece 4 . A vertical ruled line a is drawn at the boundary between the side wall 1 and the chamfered walls 3 on both sides thereof, and a vertical ruled line b is drawn at the boundary between the end wall 2 and the chamfered walls 3 or the successive pieces 4 on both sides thereof. there is The vertical ruled lines a and b are ruled from the back side of the cardboard.

Of the vertical ruled lines b on both sides of the pair of end walls 2, those that are positioned diagonally on the chamfered box in the assembled state are folding lines FL, which are bending positions during manufacture with a flexo folder gluer.

In addition, in the lid portion 20 on the bottom surface, an inner flap 5 and an outer flap 6 are continuously provided at the lower ends of the side walls 1 and the end walls 2, respectively. 7 and 8 are connected respectively. The boundary between the side wall 1 and the inner flap 5 and the lid flap 7 is marked with a horizontal ruled line c, and the boundary between the end wall 2 and the outer flap 6 and the lid flap 8 is marked with a horizontal ruled line d. Horizontal ruled lines c and d are ruled from the back side of the cardboard.

In the lid portion 20, the extension length _D1 of the inner flap 5 from the side wall 1 is set to be substantially the same as half the width W (see FIG. 6) of the chamfered box in the assembled state. Also, since the original blank is manufactured by a corrugator, the extension length _D1 of the inner flap 5 from the side wall 1 and the extension length D2 of the outer flap 6 from the end wall ₂ are are complete.

Both side edges of the inner flap 5 protrude outward from the extended lines of the vertical ruled lines a on both sides of the side wall 1, and portions of the side edges of the inner flap 5 closer to the side wall 1 are cut into the chamfered wall 3 during assembly. Along the inner surface, an oblique side forms an angle of 45° with respect to the extension of the horizontal ruled line c. there is

Both side edges of the outer flap 6 are positioned inside the extension lines of the vertical ruled lines b on both sides of the end wall 2, and the width B of the outer flap 6 is set narrower than the width A of the end wall 2. - 特許庁As a result, when the crease is processed by the creaser of the flexo folder gluer, no crease is formed on the extension line of the vertical crease b on the outer flap 6 .

Insertion pieces 21 protrude from both sides of the tip of the outer flap 6 , and insertion holes 22 are formed in portions near both ends of the inner flap 5 .

The insertion hole 22 is an L-shaped cut extending in the direction of the longitudinal center of the outer flap 6 and the boundary with the side wall 1, and a push-in piece 22a is formed inside. The push-in piece 22a is swingable by using a crease near the side edge of the outer flap 6 as a hinge, and the inside of the push-in piece 22a has creases inserted from the back side of the cardboard so that it can be easily bent when pushed. .

A center fold line 23 extending in the width direction is inserted in the middle portion of the outer flap 6 in the extending direction from the end wall 2, and the center fold line 23 is a crease from the back surface of the corrugated cardboard. A tapered pressing piece 24 protrudes between the insertion pieces 21 on both sides of the outer flap 6 at the middle portion of the tip end thereof.

Also in the lid portion 30, similarly to the inner flap 5 and the outer flap 6 of the lid portion 20, the extension length _D3 of the lid flap 7 from the side wall 1 is the width W ( 6), and the extension length _D3 of the lid flap 7 from the side wall 1 and the extension length _D4 of the lid flap 8 from the end wall 2 are are complete.

One of the lid flaps 7 has a notched edge 7a formed by obliquely cutting one side portion from the tip edge to the base side, and the side portion of the one lid flap 8 adjacent to the notched edge 7a has a corner-filled edge. A piece 8a is projected.

Further, an oval handle hole 2a is bored in the middle portion in the width direction near the upper end of the end wall 2, and a circular ventilation hole 5a is bored in the middle portion near the tip of the inner flap 5. .

When manufacturing a chamfered box, the blank as described above is folded around the folding line FL as shown in FIG. They are stuck together to form a flat folded state. This step can be performed using a flexo folder gluer.

When packing an article using this chamfered box, as shown in FIG. The inner flap 5 is folded inward along the horizontal ruled line c, and the tip edges thereof are butted against each other.

Thus, when the leading edges of the pair of inner flaps 5 are brought into contact with each other, the dimension between the opposing side walls 1 is determined. Also, at this time, of the both side edges of the inner flap 5, the portion extending in the direction orthogonal to the horizontal ruled line c abuts the inner surface of the boundary between the outer flap 6 and the opposing end wall 2. The distance between them is also determined and the shape of the barrel 10 is fixed.

Therefore, the chamfered wall 3 is inclined at an angle of 45° with respect to the side wall 1 and the end wall 2 as designed, and the body 10 has a stable octagonal cylindrical shape.

Next, as shown in FIG. 4 , the outer flap 6 is folded inward along the horizontal ruled line d, and the insertion piece 21 is inserted into the insertion hole 22 while being folded about the center fold line 23 . At this time, the pushing piece 22a is pushed by the insertion piece 21, and the insertion hole 22 is opened.

5, the inner flap 5 is held by the outer flap 6 in a state of being bent inward from the side wall 1, and the insertion piece 21 is inserted into the insertion hole 22, as shown from the bottom in FIG. As the insertion progresses, the bending of the outer flap 6 about the folding line 23 is extended, and the insertion piece 21 is prevented from coming out of the insertion hole 22.例文帳に追加

In this state, the insertion piece 21 is sandwiched between the pushing piece 22a restored by elasticity and the edge of the insertion hole 22, and the abutting portion of the pair of inner flaps 5 is held between the insertion piece 21 and the pressing piece 24. Sandwiched.

Since the inserting piece 21 is along the inner surface of the inner flap 5 and the articles stored in the box press the inserting piece 21 against the inner flap 5, the lid portion 20 on the bottom can be secured without attaching a tape or the like. It is kept closed to prevent bottoming out.

In FIG. 6, as shown from above, the pair of lid flaps 7 and 8 on the top surface are sequentially folded in the circumferential direction from one lid flap 7 along horizontal ruled lines c and d. When the portion facing the notch edge 7a of the flap 7 is run over the adjacent lid flap 8, the lid portion 30 on the top surface is maintained in the closed state without applying tape or the like.

In this sealed state, the chamfered wall 3 and the notch edge 7a of the lid flap 7 are closed by the corner filling piece 8a so as not to leave a gap.

As described above, this chamfered box can be efficiently manufactured with a flexo folder gluer, and when used, it can be easily manufactured with a general caser without using a mandrel or the like, without requiring a dedicated box making machine. An article can be packaged by assembling it into a predetermined shape. It can also be assembled manually.

Next, a chamfered box according to a second embodiment of the present invention will be described with reference to FIGS. 7 to 12. FIG. It should be noted that, here, only the features that are different from those of the first embodiment will be mentioned.

This chamfered box is made by folding the blank shown in FIG. 7 with a flexo folder gluer as shown in FIG. As shown in FIG. 12, the lid portion 20 on the bottom surface is closed, and as shown in FIG. 12, the lid portion 30 on the top surface is closed. It has a remarkably large shape.

Thus, when the dimension in the length direction is remarkably large, in the configuration in which the tip edges of the pair of inner flaps 5 are butted against each other in the lid portion 20 on the bottom surface as in the first embodiment, the state in which the article is accommodated When the flap is lifted up with a handle, the torso 10 may be twisted and a gap may be formed between the tip edges of the pair of inner flaps 5.例文帳に追加

Therefore, in this chamfered box, as shown in FIG. 7, the extension length _D1 of the inner flap 5 from the side wall 1 is less than half the box width W (see FIG. 12) in the assembled state of the chamfered box. is set large, and a V-shaped recessed portion 5b is formed in the central portion of the tip edge of the inner flap 5. As shown in FIG.

The chamfered box can be manufactured using a flexofolder gluer and can be flat folded as shown in FIG.

When packing an article using a chamfered box as described above, as shown in FIG. When the pair of inner flaps 5 are folded inward along the horizontal ruled line c and the recessed portions 5b at the tip edges thereof are engaged with each other, the portions facing the tip edges of the pair of inner flaps 5 overlap each other.

Even in this state, since the tip edges of the pair of inner flaps 5 are in contact with each other, the dimension between the opposing side walls 1 is determined. Since the portion extending in the opposite direction abuts the inner surface of the boundary between the end wall 2 and the outer flap 6, the dimension between the opposing end walls 2 is also determined, and the shape of the trunk portion 10 is fixed.

After that, as shown in FIGS. 10 and 11, the outer flap 6 is folded inward along the horizontal ruled line d, bent and stretched about the center fold line 23, and the insertion piece 21 is inserted into the insertion hole 22 to form the bottom surface. 12, after folding the lid flap 8 inward along the horizontal ruled line c, the lid flap 7 is folded inward along the horizontal ruled line d, and the pair of lid flaps 7 The tip edges are butted against each other, and the cover part 30 on the top surface is closed.

In such a chamfered box, both side edges of the pair of inner flaps 5 are in contact with the inner surface of the end wall 2, and the portions facing the tip edges of the pair of inner flaps 5 are engaged and overlapped, so that the articles can be accommodated. When lifted in the state, the phenomenon that the body 10 is twisted and bent is suppressed, and even if the body 10 is slightly bent, the phenomenon that a gap opens between the tip edges of the pair of inner flaps 5 is prevented. be.

In each of the above-described embodiments, the body 10 has the chamfered walls 3 at the four corners and has an octagonal cylindrical shape, but the body 10 has at least one set of chamfered walls 3 at diagonal positions. and can be flatly folded with the folding line FL on one side as an axis, it can be manufactured with a flexo folder gluer, so it may be in the shape of a hexagonal cylinder.

The shape of the top surface is not particularly limited. For example, the lid flap 7 extending from one side wall 1 may cover the entire top surface, or the top surface may have an opening in the center. Alternatively, it may be in the form of a tray without lid flaps 7,8.

In addition, if at least the longitudinal lines of the horizontal ruled lines c and d on the top surface side are made in a V-shape or a U-shape that lowers toward the center from both ends, the center of the ridgeline between the top surface and the long surface When a plurality of chamfered boxes are piled up, the corners of the ridge lines, which are superior in strength, can bear a large load, thereby preventing deformation of the body part 10.例文帳に追加be able to.

In addition, the side wall 1 to which the inner flaps 5 are connected has a long surface, and the end wall 2 to which the outer flaps 6 are connected has a width surface. The end wall 2 may have a width surface and the end wall 2 connected to the outer flap 6 may have a long surface.

1 Side wall 2 End wall 2a Handle hole 3 Chamfered wall 4 Succession piece 5 Inner flap 5a Vent hole 5b Recessed portion 6 Outer flaps 7, 8 Lid flap 7a Notch edge 8a Corner filling piece 10 Body 20 Lid (bottom)
21 Insertion piece 22 Insertion hole 22a Push piece 23 Center fold line 24 Press piece 30 Cover (top surface)
a, b Vertical ruled line c, d Horizontal ruled line FL Folding line

Claims (4)

A square tube-shaped body (10) has a pair of side walls (1) and end walls (2), a chamfered wall (3) inclined at a diagonal position, and a connecting piece (4) connecting these as ridgelines. The side wall (1) and the end wall (2) are formed by folding along vertical creases (a, b), and an inner flap (5) and an outer flap (6) are formed along horizontal creases (c, d), respectively. A chamfered box in which the lid (20) is formed by sequentially folding the inner flap (5) and the outer flap (6) along the horizontal ruled lines (c, d) ,
The horizontal ruled lines (c, d) forming the roots of the inner flap (5) and the outer flap (6) are aligned on a straight line,
In the lid portion (20), the tip edges of the pair of inner flaps (5) are in contact with each other at least partially, and both side edges of the pair of inner flaps (5) extend vertically along both sides of the side wall (1). A portion of the side edge of the inner flap (5) extending outward from the extension of the ruled line (a) and near the base is formed as an oblique side cut off from the chamfered wall (3), and the chamfered The tip of the inner flap (5) extends along the inner surface of the wall (3) and extends in a direction orthogonal to the horizontal ruled line (c) to extend along the inner surface of the end wall (2). Abuts on the inner surface of the boundary with the outer flap (6),
Both side edges of the outer flap (6) are located inside the extended lines of the vertical ruled lines (b) on both sides of the end wall (2), and are wider than the width (A) of the end wall (2). The width (B) of the outer flap (6) is set narrow,
Among the vertical ruled lines (b) on both sides of the end wall (2), the folding line (FL) at the diagonal position is used as an axis, and assembled from a flat folded state,
Insertion pieces (21) protrude from both sides of the tip of the pair of outer flaps (6), and insertion holes (22) are formed in the pair of inner flaps (5),
The outer flap (6) holds the inner flap (5) in a state of being bent inward from the side wall (1), and the insertion piece (21) is inserted into the insertion hole (22) to A chamfered box characterized in that the lid (20) is maintained in a closed state by being prevented from slipping out of the insertion hole (22). 2. The chamfered box according to claim 1, wherein the top edges of the pair of inner flaps (5) abut against each other in the lid (20). 2. Chamfering according to claim 1, characterized in that in the lid portion (20), the recessed portions (5b) at the tip edges of the pair of inner flaps (5) are engaged with each other so that the portions facing the tip edges overlap each other. box. A center fold line (23) extending in the width direction is inserted in the pair of outer flaps (6) in an intermediate portion in the extending direction from the end wall (2),
When the insertion piece (21) is inserted into the insertion hole (22) while bending the outer flap (6) about the folding line (23), the folding at the folding line (23) is extended. 4. A chamfered box according to claim 2 or 3, wherein said insertion piece (21) is prevented from slipping out of said insertion hole (22).

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