CN109311557B

CN109311557B - Tray and packaging device

Info

Publication number: CN109311557B
Application number: CN201680083814.3A
Authority: CN
Inventors: 山崎正博
Original assignee: Mitsubishi Electric Corp
Current assignee: Mitsubishi Electric Corp
Priority date: 2016-06-28
Filing date: 2016-06-28
Publication date: 2020-10-16
Anticipated expiration: 2036-06-28
Also published as: GB2566147B; US20190106241A1; JPWO2018003019A1; CN109311557A; GB201811355D0; GB2566147A; WO2018003019A1

Abstract

A pallet (1) is provided with an outer sheet (2) made of a corrugated cardboard, at least one intermediate sheet (3) made of a corrugated cardboard wrapped with the outer sheet (2), and a fixing mechanism. The outer sheet (2) is provided with: a bottom wall (4); a first side wall (5) connected to the bottom wall (4) by a first fold line (9); a second side wall (6) connected to the bottom wall (4) by a second fold line (10); a first upper wall (7) connected to the first side wall (5) by a third bend line (11) parallel to the first bend line (9); the second upper wall (8) is connected to the second side wall (6) by a fourth bend line (12) parallel to the second bend line (10). The fixing mechanism fixes the first upper wall (7) and the second upper wall (8).

Description

Tray and packaging device

Technical Field

The invention relates to a tray and a packaging device.

Background

The packaging device disclosed in patent document 1 includes a tray (2A). The tray (2A) is a laminated body composed of plate bodies (21A, 22A, 23A, 24A) composed of corrugated cardboard. The plate bodies (21A, 22A, 23A, 24A) are bonded together by a bonding material.

Documents of the prior art

Patent document

Patent document 1: japanese laid-open patent publication No. 9-131569

Disclosure of Invention

Problems to be solved by the invention

In the technique of patent document 1, there are the following problems at the time of logistics transportation or at the time of cargo handling. When the plate bodies (21A, 22A, 23A, 24A) are weakly bonded, the bonded portions may be peeled off. In particular, when the packaged object is a heavy object, the strength may be insufficient. The tray (2A) may be deformed by peeling the bonded portions of the plate bodies (21A, 22A, 23A, 24A). In this case, the packaged articles, i.e., the products, may be damaged by contact with each other.

The present invention has been made to solve the above-described problems, and an object thereof is to provide a tray capable of reliably protecting an object to be packed at the time of logistics transportation or at the time of cargo handling, and a packaging device provided with the tray.

Means for solving the problems

The tray of the present invention comprises an outer sheet made of a corrugated cardboard, at least 1 intermediate sheet made of a corrugated cardboard wrapped by the outer sheet, and a fixing mechanism, wherein the outer sheet comprises a bottom wall, a first side wall connected to the bottom wall by a first bending line, a second side wall connected to the bottom wall by a second bending line, a first upper wall connected to the first side wall by a third bending line parallel to the first bending line, and a second upper wall connected to the second side wall by a fourth bending line parallel to the second bending line, and the fixing mechanism fixes the first upper wall and the second upper wall.

The packaging device of the present invention includes the tray.

Effects of the invention

According to the present invention, the packaged object can be reliably protected during logistics transportation or cargo handling.

Drawings

Fig. 1 is a perspective view showing a tray according to embodiment 1.

Fig. 2 is a view of the outer sheet of the tray according to embodiment 1.

Fig. 3 is a perspective view showing one of the intermediate sheets included in the tray according to embodiment 1.

Fig. 4 is a perspective view showing a state in which the tray according to embodiment 1 is assembled.

Fig. 5 is a plan view showing a state where a product is fitted in a recess of the tray according to embodiment 1.

Fig. 6 is a sectional side view showing a state where a product is fitted in a recess of the tray according to embodiment 1.

Fig. 7 is an exploded perspective view of a packaging device provided with the tray according to embodiment 1.

Fig. 8 is a perspective view of the packaging device shown in fig. 7 in an assembled state.

Fig. 9 is a schematic cross-sectional view of the interior of the packaging device shown in fig. 7 and 8.

Fig. 10 is a perspective view showing a tray according to embodiment 2.

Fig. 11 is a view of the outer sheet of the tray according to embodiment 2.

Fig. 12 is a plan view showing an intermediate sheet provided in the tray according to embodiment 2.

Detailed Description

Hereinafter, embodiments will be described with reference to the drawings. The same reference numerals are given to the common elements in the drawings, and redundant description is simplified or omitted. The present disclosure can include all combinations of combinable ones of the structures described in the following embodiments.

Embodiment 1.

Fig. 1 is a perspective view showing a tray 1 according to embodiment 1. Fig. 2 is a view of the outer sheet 2 provided in the tray 1 according to embodiment 1. Fig. 3 is a perspective view showing 1 sheet of the intermediate sheet 3 provided in the tray 1 according to embodiment 1.

As shown in fig. 1, the tray 1 includes an outer sheet 2 made of corrugated cardboard and at least 1 intermediate sheet 3 made of corrugated cardboard. At least 1 of the intermediate sheets 3 is wrapped by the outer sheets 2. The tray 1 of the present embodiment includes 3 stacked intermediate sheets 3. By providing the tray 1 with the plurality of stacked intermediate sheets 3, the strength of the tray 1 can be further improved. The plurality of intermediate sheets 3 included in the tray 1 may have the same shape. The number of the intermediate sheets 3 included in the tray 1 is not limited to the above configuration, and may be 1.

At least 1 concave portion 13 is formed on the upper surface of the tray 1. In the present embodiment, the tray 1 includes 15 recesses 13. Each of the concave portions 13 can at least partially accommodate an object to be packaged, such as a product. In the present embodiment, the shape of the recess 13 in plan view is rectangular. The shape of the concave portion 13 in a plan view is not limited to a rectangle, and may be, for example, a square, a circle, an ellipse, a trapezoid, or the like.

The outer sheet 2 includes a bottom wall 4, a first side wall 5, a second side wall 6, a first upper wall 7, and a second upper wall 8. The first side wall 5 is connected to the bottom wall 4 by a first fold line 9. The second side wall 6 is connected to the bottom wall 4 by a second fold line 10. The first upper wall 7 is connected to the first side wall 5 by a third fold line 11 parallel to the first fold line 9. The second upper wall 8 is connected to the second side wall 6 by a fourth bend line 12 parallel to the second bend line 10.

The upper surface of the bottom wall 4 is in contact with the lower surface of the lowermost intermediate sheet 3. The lower surfaces of the first upper wall 7 and the second upper wall 8 contact the upper surface of the uppermost intermediate sheet 3.

The bottom wall 4 in the present embodiment has a rectangular shape. The first bend line 9 and the second bend line 10 are formed along the longitudinal direction of the bottom wall 4.

The shape of the bottom wall 4 is not limited to a rectangle. The bottom wall 4 may also be trapezoidal in shape, for example. In the present embodiment, the first bend line 9 and the second bend line 10 are parallel to each other. Without being limited to such a configuration, the first bend line 9 may be inclined with respect to the second bend line 10.

As shown in fig. 2, the first upper wall 7 is provided with at least 1 opening 14. In the illustrated construction, the first upper wall 7 is provided with 10 openings 14. The second upper wall 8 is provided with at least 1 opening 14. In the illustrated construction, the second upper wall 8 is provided with 5 openings 14. The opening 14 has a shape corresponding to the recess 13. In the assembled state of the tray 1, the openings 14 form part of the recesses 13.

The outer panel 2 in this embodiment is provided with a first fixing tab 15 and a second fixing tab 16. The first fixing tongue 15 is connected to the first upper wall 7 by a fifth fold line 17. The second fixing tongue 16 is connected to the second upper wall 8 by a sixth fold line 18. In the illustrated construction, the number of first fixing tabs 15 is 2 and the number of second fixing tabs 16 is 2. The number of first fixing tongues 15 may be 1 or more than 3. The number of second fixing tongues 16 may be 1 or more than 3.

The bottom wall 4 is provided with a hole 19. In the illustrated construction, the number of holes 19 is 2. In the assembled state of the tray 1, the first fixing tabs 15 and the second fixing tabs 16 are fitted in the holes 19.

In the present embodiment, the first upper wall 7 and the second upper wall 8 have shapes asymmetrical to each other. The first upper wall 7 is larger than the second upper wall 8. The shape of the first upper wall 7 and the second upper wall 8 is not limited to such a configuration, and may be symmetrical to each other.

The first upper wall 7 and the second upper wall 8 in the present embodiment are each rectangular in shape. The shape of each of the first upper wall 7 and the second upper wall 8 is not limited to a rectangle. The first upper wall 7 and the second upper wall 8 may have trapezoidal shapes, for example.

First upper wall 7 has an edge 21 located on the opposite side of third bend line 11. In the illustrated construction, edge 21 is parallel to third bend line 11. Without being limited to such a configuration, edge 21 may be inclined with respect to third bend line 11. Fifth bend line 17 is substantially collinear with edge 21.

The second upper wall 8 has an edge 22 located on the opposite side of the fourth bend line 12. In the illustrated construction, edge 22 is parallel to fourth bend line 12. Without being limited to such a configuration, edge 22 may also be inclined with respect to fourth bend line 12. Sixth bend line 18 is substantially collinear with edge 22.

As shown in fig. 1, in the assembled state of the tray 1, the edge 21 of the first upper wall 7 is in contact with or close to the edge 22 of the second upper wall 8.

As shown in fig. 3, the shape of the intermediate sheet 3 in the present embodiment is rectangular. The shape of the intermediate sheet 3 may be substantially the same as the shape of the bottom wall 4. The intermediate sheet 3 is provided with at least 1 opening 20. In the illustrated construction, the intermediate sheet 3 is provided with 15 openings 20. The opening 20 has a shape corresponding to the recess 13. The shape of the opening 20 may also be the same as the shape of the opening 14. The assembled state of the tray 1 is as follows. Each opening 20 forms part of each recess 13. The position of each opening 20 is located at the same position as each opening 14. The recess 13 is formed by the opening 14 and the opening 20.

The intermediate sheet 3 is provided with holes 23. In the illustrated construction, the number of holes 23 is 2. The intermediate sheet 3 has

longitudinal edges

24 and 25. The state after the tray 1 is assembled is as follows. The position of each hole 23 of the intermediate sheet 3 is located at the same position as each hole 19 of the bottom wall 4. The first fixing tongue 15 and the second fixing tongue 16 are fitted in the hole 23 and the hole 19. The long-side edges 24 are in contact with or close to the first side walls 5. The long-side edge 25 is in contact with or close to the second side wall 6.

Fig. 4 is a perspective view showing a state in which the tray 1 according to embodiment 1 is assembled. To assemble the pallet 1, the following is performed. First, at least 1 intermediate sheet 3 is placed on the bottom wall 4 of the outer sheet 2. Then, the first sidewall 5 and the second sidewall 6 are bent inward along the first bending line 9 and the second bending line 10, respectively. Next, the first upper wall 7 and the second upper wall 8 are bent inward along the third bending line 11 and the fourth bending line 12, respectively. The first fixing tab 15 and the second fixing tab 16 are then bent inwards along a fifth bending line 17 and a sixth bending line 18, respectively. The first fixing tab 15 and the second fixing tab 16 are then inserted into the hole 23 of the middle panel 3 and into the hole 19 of the bottom wall 4. Thereby, the assembly of the tray 1 is completed.

The state after the tray 1 is assembled is as follows. The first 5 and second 6 side walls are perpendicular to the bottom wall 4. The first upper wall 7 and the second upper wall 8 are parallel to the bottom wall 4. The first and second fixing

tabs

15 and 16 are prevented from falling out of the

holes

23 and 19 by the frictional force between the outer peripheries of the first and second fixing

tabs

15 and 16 and the inner peripheries of the

holes

23 and 19. The first fixing tab 15 and the second fixing tab 16 are in contact with each other.

According to the present embodiment, the following effects can be obtained at the time of logistics transportation or cargo handling. Since the middle sheet 3 is wrapped by the outer sheets 2, the position of the middle sheet 3 is restricted by the first side wall 5 and the second side wall 6. Therefore, the occurrence of positional deviation of the intermediate sheet 3 can be reliably prevented. Therefore, the deformation of the tray 1 can be reliably suppressed. This can reliably prevent the packaged articles, i.e., the products, from being damaged by contact with each other.

The first fixing tab 15, the second fixing tab 16, the hole 19 and the hole 23 are examples of fixing means for fixing the first upper wall 7 and the second upper wall 8. According to the present embodiment, the first upper wall 7 and the second upper wall 8 can be reliably fixed with a simple structure. According to the present embodiment, the position of the intermediate sheet 3 can be fixed by fitting the first fixing tongue 15 and the second fixing tongue 16 into the hole 23 of the intermediate sheet 3. According to the present embodiment, the first fixing tongue 15 and the second fixing tongue 16 are fitted not only in the hole 23 of the intermediate plate 3 but also in the hole 19 of the bottom wall 4, whereby the first upper wall 7 and the second upper wall 8 can be fixed more reliably. Instead of this, the bottom wall 4 may have no holes 19. That is, the first fixing tongue 15 and the second fixing tongue 16 may be fitted only in the hole 23 of the intermediate plate 3. Instead of the structure in which all the intermediate sheets 3 are provided with the holes 23, only a part of the intermediate sheets 3 on the upper layer side may be provided with the holes 23.

In the present embodiment, the first fixing tab 15 and the second fixing tab 16 are fitted together in the hole 19 and the hole 23. Instead of this structure, the first fixing tongue 15 and the second fixing tongue 16 may be fitted into different holes, respectively.

The fixing mechanism of the present invention is not limited to the above structure. For example, the following fixing mechanism may be used. The lower surfaces of the first upper wall 7 and the second upper wall 8 may be bonded to the upper surface of the uppermost intermediate sheet 3 with an adhesive or a double-sided tape. Alternatively, a first fixing tongue and a second fixing tongue having a hook may be connected to the first upper wall 7 and the second upper wall 8, respectively, so that the hooks of the first fixing tongue and the second fixing tongue may be engaged with the lower surface of the bottom wall 4. Conversely, the first and second fixing tabs with hooks may be connected to the bottom wall 4 such that the hooks of the first and second fixing tabs engage with the upper surfaces of the first and second

upper walls

7 and 8, respectively.

Fig. 5 is a plan view showing a state where a product 90 is fitted in the recess 13 of the tray 1 according to embodiment 1. Fig. 6 is a sectional side view showing a state in which a product 90 is fitted into a recess 13 of the tray 1 according to embodiment 1. As shown in these figures, a product 90 to be packaged can be fitted into each recess 13 of the tray 1. The product 90 extends through the opening 20 of the central panel 3 and contacts the bottom wall 4.

Fig. 7 is an exploded perspective view of a packaging device 30 including the tray 1 according to embodiment 1. Fig. 8 is a perspective view of the packaging device 30 shown in fig. 7 in an assembled state. As shown in fig. 7, the packaging apparatus 30 includes a plurality of trays 1, a bottom tray 31, a bottom tray 32, side sheets 33, and a top cover 34. The shoe 31 may also be made of wood or plastic. The bottom tray 32, side panels 33, and top cover 34 may also be corrugated cardboard.

The packaging device 30 is assembled in the following manner. On the shoe 31 is placed a bottom tray 32. The tray 1 is placed on the bottom tray 32. In the present embodiment, a plurality of (6) trays 1 can be arranged on the bottom tray 32. The bottom wall 4 of the tray 1 is in contact with the upper surface of the bottom tray 32. The tray 1 with the product 90 embedded in the recess 13 is stacked in multiple layers. At this time, the position of the product 90 above the tray 1 and the position of the product 90 below the tray 1 coincide in the front-rear and left-right horizontal directions. Next, the side sheet 33 is disposed so as to cover the periphery of the stacked tray 1. Next, the top cover 34 is attached so as to cover the upper side of the stacked trays 1. Finally, as shown in fig. 8, the strap 35 is wound around and fastened to the shoe 31 and the cap 34. The band 35 may be made of polypropylene, for example.

Fig. 9 is a schematic cross-sectional view of the inside of the packaging device 30 shown in fig. 7 and 8. As shown in fig. 9, in the packaging device 30 of the present embodiment, the upper surface of the product 90 below the tray 1 and the lower surface of the product 90 above the tray 1 are in contact with each other through the bottom wall 4 of the tray 1. Fig. 7 shows an example in which the shape of the product 91 fitted into the tray 1 on the uppermost layer is different from the shape of the product 90 shown in fig. 9.

According to the present embodiment, the following effects can be obtained. Primarily as a load-bearing configuration for the product 90. It is not affected by the change in strength of the tray 1 caused by temperature and humidity. The collapse of the goods due to the deformation of the packaging material or the like is less likely to occur.

When unpacking the packaging device 30, each tray 1 may be individually taken out and moved by hand. In this case, even if the product 90 is heavy, the intermediate bending deformation of the tray 1 in the horizontal direction is unlikely to occur, and particularly, the intermediate bending deformation of the tray 1 in the middle of the longitudinal direction is unlikely to occur. Therefore, product damage due to the products 90 contacting each other or dropping the tray 1 is not easily caused.

Since the product 90 is fitted into the concave portion 13 of the pallet 1, the impact generated at the time of truck transportation or at the time of cargo handling is absorbed by the deformation of the laminated corrugated cardboard sheets, and the impact is alleviated. Therefore, damage to the product 90 is not easily generated.

As shown in fig. 1, the corrugated sheets of the outer sheet 2 and the intermediate sheet 3 of the tray 1 have corrugations with a wavy cross-sectional shape. The direction of extension of the corrugations is parallel to the longitudinal direction of the tray 1. According to the present embodiment, the following effects can be obtained by such a configuration. The bending strength of the tray 1 in the longitudinal direction is improved. The occurrence of the intermediate bending deformation of the tray 1 in the horizontal direction, particularly the intermediate bending deformation in the middle of the tray 1 in the longitudinal direction thereof, can be more reliably prevented. Therefore, damage to the products due to the products 90 contacting each other or dropping the tray 1 can be prevented more reliably. Only one of the direction in which the corrugations of the corrugated cardboard of the outer sheet 2 extend and the direction in which the corrugations of the corrugated cardboard of the intermediate sheet 3 extend may be parallel to the longitudinal direction of the tray 1. Even in this case, effects similar to the above-described effects can be obtained.

As shown in fig. 2, in the present embodiment, the length L2 in the longitudinal direction of the first side wall 5 of the outer sheet 2 is equal to the length L1 in the longitudinal direction of the bottom wall 4. The length L3 in the longitudinal direction of the second side wall 6 of the outer panel 2 is equal to the length L1 in the longitudinal direction of the bottom wall 4. According to the present embodiment, the following effects can be obtained by such a configuration. The bending rigidity of the first side wall 5 and the second side wall 6 further improves the bending strength of the tray 1 in the longitudinal direction. The occurrence of the intermediate bending deformation of the tray 1 in the horizontal direction, particularly the intermediate bending deformation in the middle of the tray 1 in the longitudinal direction thereof, can be more reliably prevented. Therefore, damage to the products due to the products 90 contacting each other or dropping the tray 1 can be prevented more reliably. Not limited to the illustrated configuration, the effect similar to the above-described effect can be obtained as long as the length L2 in the longitudinal direction of the first side wall 5 is equal to or greater than 1/2 of the length L1 in the longitudinal direction of the bottom wall 4, and the length L3 in the longitudinal direction of the second side wall 6 is equal to or greater than 1/2 of the length L1 in the longitudinal direction of the bottom wall 4.

Embodiment 2.

Next, although embodiment 2 will be described with reference to fig. 10 to 12, differences from embodiment 1 will be mainly described, and the description of the same or corresponding portions will be simplified or omitted.

Fig. 10 is a perspective view showing a tray 1A according to embodiment 2. Fig. 11 is a view of the outer sheet 2A of the tray 1A according to embodiment 2 being unfolded. Fig. 12 is a plan view showing an intermediate sheet 3A provided in the tray 1A according to embodiment 2.

As shown in fig. 10, chamfered portions 26 are formed at the corners of the tray 1A in embodiment 2. In the illustrated configuration, chamfered portions 26 are formed at each of 4 corners of the tray 1A. The configuration is not limited to this, and the chamfered portions 26 may be formed only in 1, 2, or 3 of the 4 corners of the tray 1A. As shown in fig. 11, the outer sheet 2A of the tray 1A according to embodiment 2 includes notches 27. As shown in fig. 12, the intermediate sheet 3A included in the tray 1A according to embodiment 2 includes notches 28. The chamfered portion 26 of the tray 1A is formed by the notch 27 of the outer sheet 2A and the notch 28 of the intermediate sheet 3A.

According to the present embodiment, the tray 1A includes the chamfered portion 26, and the following effects can be obtained. In the operation of assembling the packaging device 30 or in the operation of unpacking the packaging device 30 and taking out the tray 1A, since the operator can hook the fingers on the chamfered portions 26, the tray 1A is easily moved, and the operability is further improved.

Description of the reference numerals

1. 1A tray; 2. 2A outer sheet; 3. 3A middle sheet; 4a bottom wall; 5 a first side wall; 6 a second side wall; 7 a first upper wall; 8 a second upper wall; 9 a first bend line; 10 a second bend line; 11 a third bend line; 12 a fourth bend line; 13 a recess; 14, an opening; 15 a first securing tab; 16 a second securing tab; 17 a fifth bend line; 18 a sixth bend line; 19 holes; 20, opening; 21. 22 edges; 23 holes; 24. 25 long-side direction edges; 26 chamfering the corner; 30, a packaging device; 31 a bottom support; 32 a bottom tray; 33 side sheets; 34 a top cover; 35 a binding band; 90. 91 product (a).

Claims

1. A packaging device having a plurality of trays, wherein,

the plurality of trays each have:

an outer sheet made of a corrugated cardboard;

a middle sheet separated from the outer sheets, wrapped by the outer sheets, and made of a corrugated cardboard, the middle sheet being at least 1 sheet; and

a fixing mechanism for fixing the position of the movable part,

the outer sheet includes:

a bottom wall;

a first side wall connected to the bottom wall by a first bending line;

a second sidewall connected to the bottom wall by a second bend line;

a first upper wall connected to the first sidewall by a third bending line parallel to the first bending line; and

a second upper wall connected to the second sidewall through a fourth bending line parallel to the second bending line,

the fixing mechanism fixes the first upper wall and the second upper wall,

the lower surfaces of the first upper wall and the second upper wall are in contact with the upper surface of the uppermost intermediate sheet,

a recess is formed in an upper surface of the tray by an opening formed in the first upper wall and an opening formed in the intermediate sheet,

a recess is formed in an upper surface of the tray by an opening formed in the second upper wall and an opening formed in the intermediate sheet,

in each of the recesses, an object to be packed is partially received,

the packaged object protrudes above the upper surface of the first upper wall or the upper surface of the second upper wall,

the tray in which the packaged article is inserted in the concave portion is stacked in a plurality of layers,

the upper surface of the object to be packed below one of the trays and the lower surface of the object to be packed above the tray are brought into contact with each other through the bottom wall of the tray, whereby the object to be packed supports a load.

2. The packaging device of claim 1,

at least one of the extending direction of the corrugations of the corrugated cardboard sheet of the outer sheet and the extending direction of the corrugations of the corrugated cardboard sheet of the intermediate sheet is parallel to the longitudinal direction of the tray.

3. The packaging device of claim 1 or 2,

the length of the first side wall in the longitudinal direction is not less than 1/2 of the length of the bottom wall in the longitudinal direction,

the length of the second side wall in the longitudinal direction is not less than 1/2 of the length of the bottom wall in the longitudinal direction.

4. The packaging device of claim 1 or 2,

the fixing mechanism is provided with a first fixing convex tongue and a second fixing convex tongue, the first fixing convex tongue is connected to the first upper wall through a fifth bending line, and the second fixing convex tongue is connected to the second upper wall through a sixth bending line.

5. The packaging device of claim 4,

the fixing mechanism is provided with a hole formed on the middle sheet,

the first fixing tongue and the second fixing tongue are embedded in the hole of the middle sheet.

6. The packaging device of claim 4,

the fixing mechanism is provided with a hole formed on the middle sheet and a hole formed on the bottom wall,

the first and second fixing tabs are fitted in the holes of the intermediate piece and the holes of the bottom wall.