JP2024060294A - Packing device - Google Patents

Abstract

To shorten an operation time and reduce a material of secondary processing for multistage stacking of packed pallets.SOLUTION: A packing device comprises: a pallet part which has an upper stage pallet becoming a packaged pallet by being packaged together with an article on an article loading surface and a lower stage pallet loaded with the upper stage pallet on its upper surface, and forms a step part constituted by an outer peripheral side surface of the upper stage pellet and an annular plane spreading outward of the outer peripheral side surface out of the upper surface of the lower stage pallet; a corrugated fiberboard frame placed on the lower stage pallet so as to surround the outer periphery of an upper space of the article loading surface; and a lid placed on the corrugated fiberboard frame so as to cover the upper space surrounded by the corrugated fiberboard frame. The corrugated fiberboard frame is placed in a state where a lower end part is bent so as to contact to both of the annular plane and the outer peripheral side surface constituting the step part.SELECTED DRAWING: Figure 6

Description

The present invention relates to a packaging device.

Conventionally, known methods for stacking wrapped pallets in multiple layers include packaging devices that use processed wooden boxes and packaging devices that use cardboard boxes. An example of a packaging device that uses a cardboard box is described in Patent Document 1. From the standpoint of reducing the material costs of the box or simplifying the preparation work for packaging, it is more advantageous to use a cardboard box than a processed wooden box.

JP 2002-145324 A

However, even when using a cardboard box as described above, the cardboard alone cannot secure the load. Therefore, measures are generally taken to stabilize the position of the load and the box, such as filling the gap between the load and the cardboard box with a large amount of cushioning material. However, using a fixing aid such as cushioning material has the problem of high material costs. In addition, in order to ensure fixation by the cushioning material, it may be necessary to dismantle the wrapped pallet once by removing the packaging film, place the load together with the cushioning material in a cardboard box, and then transfer it to another pallet. In this case, the packaging work becomes complicated. In other words, with the above-mentioned conventional packaging device, there was a problem that the secondary processing for stacking the wrapped pallets in multiple layers takes time or the material costs increase.

The objective of this invention is to reduce the time and materials required for secondary processing to stack wrapped pallets in multiple layers.

One aspect of the packaging device according to the present invention is to
a pallet section including an upper pallet that is packaged together with the items on the article placement surface to become a packaged pallet, and a lower pallet on whose upper surface the upper pallet is loaded, forming a step section comprised of an outer peripheral side surface of the upper pallet and an annular flat surface on the upper surface of the lower pallet that extends outward beyond the outer peripheral side surface;
A cardboard frame is installed on the lower pallet so as to surround the outer periphery of the space above the article mounting surface;
a lid that is placed on the cardboard frame so as to cover the upper space surrounded by the cardboard frame;
The cardboard frame is installed in a bent state such that its lower end portion contacts both the annular plane and the outer peripheral side surface that constitute the step portion.

The present invention makes it possible to reduce the time and materials required for secondary processing to stack wrapped pallets in multiple layers.

1 is an external view of a packaging device according to an embodiment of the present invention; FIG. 2 is an exploded perspective view of a packaging device according to an embodiment of the present invention, with a top pallet unpackaged; FIG. 2 is an exploded perspective view of a packaging device according to an embodiment of the present invention, with the upper pallet already wrapped. 4A to 4F are diagrams illustrating an assembly procedure of the packaging device according to the embodiment of the present invention. 5A to 5E are diagrams illustrating a procedure for producing a cardboard frame of the packaging device according to the embodiment of the present invention. 1 is a schematic side view showing a packed state of a packing device according to an embodiment of the present invention; FIG. 1 is an external view of a packaging device according to an embodiment of the present invention in which multiple layers are stacked;

The following describes in detail the embodiments of the present invention with reference to the drawings.

Figure 1 is an external view of a packaging device according to this embodiment. Figures 2 and 3 are exploded perspective views of the packaging device according to this embodiment, with the upper pallet unpackaged in Figure 2 and the upper pallet already packed in Figure 3. Figures 4A to 4F show the assembly procedure for the packaging device according to this embodiment, and Figures 5A to 5E show the preparation procedure for the cardboard frame of the packaging device according to this embodiment. Figure 6 is a schematic diagram showing the packaging state of the packaging device according to this embodiment from a side view. Figure 7 is a diagram showing the state in which packaging devices according to this embodiment are stacked in multiple layers.

The packaging device 1 has a pallet section 10, a cardboard frame 20 which is a frame body made of cardboard, a cardboard lid 30 which is a lid body made of cardboard, and a band 40 which is wrapped around the cardboard frame 20 and the cardboard lid 30 and fixed to the pallet section 10.

The pallet section 10 includes a lower pallet 12 and an upper pallet 14. The lower pallet 12 and the upper pallet 14 are each a member having sufficient rigidity to support the item A, for example a resin molded body. The lower pallet 12 and the upper pallet 14 are both rectangular in plan view, more specifically square, and the upper surfaces (pallet loading surface 12a and item loading surface 14a) of the lower pallet 12 and the upper pallet 14 are both flat surfaces. The lower pallet 12 and the upper pallet 14 have outer peripheral side surfaces 12b, 14b that are equal in height, and the outer peripheral side surfaces 12b, 14b have lower openings 12c and upper openings 14c formed in two locations per side.

The lower pallet 12 and the upper pallet 14 are stacked on top of each other with the lower pallet 12 placed underneath, forming the pallet section 10, which is a two-tiered stack. The lower pallet 12 has larger external dimensions than the upper pallet 14. Therefore, when the stack is formed, a portion of the outer periphery of the pallet loading surface 12a of the lower pallet 12 becomes an annular plane 12d that extends outward beyond the outer periphery side surface 14b of the upper pallet 14 (see Figures 4B and 4C).

The upper pallet 14 is in an unpackaged state in FIG. 2, but when packing the item A, as shown in FIG. 3 etc., the item A is placed on the item loading surface 14a and is wrapped together with the item A in stretch film F to form the packaged pallet 16. In this embodiment, as an example, the item A is a nickel-metal hydride battery pack. By loading the packaged pallet 16 on the pallet loading surface 12a of the lower pallet 12 without dismantling it, the packaged pallet 16 can be packed in the packaging device 1 without transferring it. In addition, since the packaged pallet 16 is not dismantled, the item A can be fixed with stretch film F when packing the item A, making it unnecessary to use cushioning material.

In the initial stage of the assembly procedure for the packaging device 1, as shown in Figure 4A, a wrapped pallet 16 is loaded onto the pallet loading surface 12a of the lower pallet 12. In the second stage when the wrapped pallet 16 is loaded onto the lower pallet 12 (see Figure 4B), an annular plane 12d having a width W1 between the inner end and the outer end is formed on the upper surface of the lower pallet 12. At this time, the stepped portion 10a of the pallet section 10 is formed by the annular plane 12d of the lower pallet 12 and the outer peripheral side surface 14b of the upper pallet 14.

The cardboard frame 20 is made of a flat sheet of cardboard with mountain folds 27, valley folds 28, and slits 29 (see FIG. 5A). Before assembly (before use), it is advantageous to leave it flat, since this allows many cardboard frames 20 to be stored without taking up too much space.

When assembled, the cardboard frame 20 is a rectangular (more specifically, square) cylindrical body when viewed from above (see FIG. 5E). No creases are provided at the upper end 20b of the cardboard frame 20, and an outer fold 22 is provided at the lower end 20a.

The steps for making the cardboard frame 20 are as shown in Figures 5A to 5E. Specifically, in the initial stage shown in Figure 5A, the cardboard frame 20 is a single flat piece of cardboard. In the second stage of the steps for making the cardboard frame 20 (see Figure 5B), the cardboard frame 20 is folded along the boundaries between the walls 24a, 24b, 24c, and 24d, and in the third stage (see Figure 5C), the joint 26 is adhesively bonded to the inner surface of the wall 24d to form a rectangular tube.

Furthermore, in the manufacturing procedure of the cardboard frame 20, in the fourth stage (see FIG. 5D), valley folds are formed along the half-cut or V-cut valley folds 28 provided between the walls 24a, 24b, 24c, 24d and the outer folds 22a, 22b, 22c, 22d, and in the fifth stage (see FIG. 5E), the outer folds 22a, 22b, 22c, 22d are spread outward so as to be perpendicular to the walls 24a, 24b, 24c, 24d, and the cardboard frame 20 is completed.

The cardboard frame 20 completed as described above is placed on the lower pallet 12 in the third stage of the assembly procedure for the packaging device 1 (see FIG. 4C). More specifically, the installation position is the annular plane 12d. The cardboard frame 20 placed on the lower pallet 12 surrounds the space S above the item placement surface 12a on which item A is placed. In this way, the packaged pallet 16 containing item A is stored in the packaging device 1.

Here, the width W2 from the base end to the outer tip end of the outer folds 22a, 22b, 22c, 22d located directly below the walls 24a, 24b, 24c, 24d is equal to the width W1 between the inner end and the outer end of the annular plane 12d. As a result, when the cardboard frame 20 is placed on the lower pallet 12, the outer folds 22 do not protrude outward from the outer peripheral side surface 12b of the lower pallet 12, so that binding by the bands 40 described below is not hindered by the protrusion of the outer folds 22a, 22b, 22c, 22d.

In the fourth stage of the assembly procedure for the packaging device 1 (see FIG. 4D), the space S above the item placement surface 12a surrounded by the cardboard frame 20 is covered with a cardboard lid 30. In the fifth stage of the assembly procedure for the packaging device 1 (see FIG. 4E), when the installation of the cardboard lid 30 is complete, the wrapped pallet 16 is completely housed inside the packaging device 1.

The cardboard lid 30 is a lid member made of cardboard and has a top surface portion 32 and a side wall portion 34 that hangs down from the outer periphery of the top surface portion 32.

The top surface 32 has the same dimensions and shape as the opening above the space S defined by the upper end 20b of the cardboard frame 20. This allows the top surface 32 to cover the space S surrounded by the cardboard frame 20 exactly when the cardboard lid 30 is placed on the cardboard frame 20. In addition, since the cardboard lid 30 can be placed on the cardboard frame 20 with the side wall 34 abutting the upper end 20b of the cardboard frame 20 from the outer periphery, the cardboard lid 30 is less likely to shift horizontally relative to the cardboard frame 20, and the packaging state can be stabilized.

The cardboard lid 30 may be flat like the cardboard frame 20 when stored before assembly. If the mountain folds, valley folds, and slits are formed in advance to match the shape and dimensions of the cardboard frame 20, the cardboard lid 30 can be easily produced during assembly.

In the fifth (final) stage of the assembly procedure for the packaging device 1 (see FIG. 4F), the lowermost pallet section 10, particularly the lower pallet 12, and the uppermost cardboard lid 30 are bound and secured together by the bands 40 with the cardboard frame 20 sandwiched between them. This completes the packaging state of the packaging device 1.

The band 40 is a long, string-like binding or fastening device, and is made of a material such as polypropylene that is low cost, durable, and has high mechanical strength, including heat and chemical resistance.

The bands 40 are wrapped around the pallet section 10, the cardboard frame 20, and the cardboard lid 30 in the vertical direction, and the lower end side is inserted through the lower opening 12c of the lower pallet 12 and fixed to the lower pallet 12. In this embodiment, two bands 40 are used in the front-to-back direction and two in the left-to-right direction, but the number of bands used is not limited to this.

When the cardboard lid 30 is placed on the cardboard frame 20, as shown in FIG. 6, the side wall portion 34 of the cardboard lid 30 is located in the region R between the inner end and the outer end of the annular plane 12d of the lower pallet 12 in the horizontal direction. As a result, the wound shape of the band 40 that binds the three bodies of the pallet part 10, the cardboard frame 20, and the cardboard lid 30 becomes a trapezoidal shape that spreads out at the end when viewed from the side, so that the posture of the packaging state of the packaging device 1 can be further stabilized. In addition, since the band 40 is in a floating (separated) state from the cardboard frame 20 on the side of the packaging device 1, it is easy to cut when unpacking, which is advantageous in terms of work efficiency. Furthermore, if a recess into which the cardboard lid 30 fits is provided on the back surface (not shown) of the lower pallet 12, it can also contribute to stabilizing the stacked state when multiple packaging devices 1 are stacked in multiple layers (see FIG. 7).

As described above, according to this embodiment, the packaging device 1 includes an upper pallet 14 that is packaged with the item A on the item placement surface 14a to become a packaged pallet 16, and a lower pallet 12 on which the upper pallet 14 is loaded on the pallet loading surface 12a. The pallet section 10 forms a step portion 10a consisting of the outer peripheral side surface 14b of the upper pallet 14 and the annular plane 12d of the pallet loading surface 12a of the lower pallet 12 that extends outward beyond the outer peripheral side surface 14b. The cardboard frame 20 is installed on the lower pallet 12 so as to surround the outer periphery of the space S above the item placement surface 14a, and the cardboard lid 30 is installed on the cardboard frame 20 so as to cover the upper space S surrounded by the cardboard frame 20. The cardboard frame 20 is installed in a state in which the lower end 20a is bent so as to contact both the annular plane 1d and the outer peripheral side surface 14b that constitute the step portion 10a.

With this configuration, the upright position of the cardboard frame 20 is supported and stabilized by the annular flat surface 1d and outer peripheral side surface 14b that constitute the step portion 10a, making it easy to bind and fix with the bands 40. As a result, there is no need to reload the wrapped pallets 16 or use a large amount of cushioning material. This makes it possible to shorten the work time for secondary processing to stack the wrapped pallets 16 in multiple layers, and also reduces the material costs of packaging materials.

In addition, according to this embodiment, the step portion 10a extends around the entire periphery of the space S, and the lower end portion 20a of the cardboard frame 20 contacts both the annular plane 1d and the outer peripheral side surface 14b that constitute the step portion 10a over the entire circumference. As a result, the cardboard frame 20 can be supported over the entire circumference by the annular plane 1d and the outer peripheral side surface 14b that constitute the step portion 10a, which further stabilizes the upright position of the cardboard frame 20 and more reliably achieves the effects of shortening the secondary processing work time and reducing material costs as described above.

In addition, according to this embodiment, the lower end 20a of the cardboard frame 20 is folded outward and comes into contact with both the annular plane 1d and the outer peripheral side surface 14b that constitute the step portion 10a. This makes it easy to form a support state for the cardboard frame 20 by the step portion 10a.

In addition, according to this embodiment, the width W2 from the base end to the tip end of the folded-out lower end 20a of the cardboard frame 20 is the same as the width W1 from the inner end to the outer end of the annular plane 12d. Note that "same" here does not only mean completely same, but also includes substantial sameness including errors of the order of manufacturing tolerance. By making the width W2 and the width W1 the same, the folded-out portion 22 is prevented from protruding, and the folded-out portion 22 does not interfere with the binding by the band 40. In addition, the contact area between the folded-out portion 22 and the annular plane 12d can be maximized, so the installation state of the cardboard frame 20 can be stabilized.

In addition, according to this embodiment, the cardboard lid 30 is provided hanging down from the top surface portion 32 that covers the upper space S, and has a side wall portion 34 that is located in the region R between the inner end and the outer end of the annular plane 12d in the horizontal direction when the cardboard lid 30 is placed on the cardboard frame 20, and the lower pallet 12 and the cardboard lid 30 are bound and fixed in the vertical direction by the band 40 while sandwiching the cardboard frame 20. As a result, the band 40 is wound in a trapezoidal shape that spreads out at the end, so that the posture of the packaging device 1 in the packaged state can be stabilized. In addition, since the band 40 floats from the cardboard frame 20 on the side of the packaging device 1, it is easy to cut the band 40 when opening the package, and the work efficiency when opening the package can be improved. In addition, if a recess into which the cardboard lid 30 fits is provided on the back side of the lower pallet 12, it can also contribute to stabilizing the stacked state when multiple packaging devices 1 are stacked in multiple layers.

Although the embodiments of the present disclosure have been specifically described above, the present disclosure is not limited to the specific embodiments described above. Various modifications and changes to the specific examples described in the above embodiments are possible within the scope of the gist of the present disclosure as described in the claims.

The present invention can be suitably used as a packaging device for wrapped pallets.

LIST OF SYMBOLS 1 Packing device 10 Pallet section 10a Step section 12 Lower pallet 12a Pallet loading surface 12b Lower outer peripheral side surface 12c Lower opening 12d Annular plane 14 Upper pallet 14a Article loading surface 14b Upper outer peripheral side surface 14c Upper opening 20 Cardboard frame 20a Lower end 20b Upper end 22, 22a, 22b, 22c, 22d Outer fold section 24, 24a, 24b, 24c, 24d Wall section 26 Joint section 27 Mountain fold section 28 Valley fold section 29 Slit section 30 Cardboard lid 32 Top surface section 34 Side wall section 40 Band (binding device, fastener)
A: Item F: Stretch film R: Area S: Space

Claims (5)

a pallet section including an upper pallet that is packaged together with the items on the article placement surface to become a packaged pallet, and a lower pallet on whose upper surface the upper pallet is loaded, forming a step section comprised of an outer peripheral side surface of the upper pallet and an annular flat surface on the upper surface of the lower pallet that extends outward beyond the outer peripheral side surface;
A cardboard frame is installed on the lower pallet so as to surround the outer periphery of the space above the article mounting surface;
a lid that is placed on the cardboard frame so as to cover the upper space surrounded by the cardboard frame;
The cardboard frame is installed in a state where the lower end is bent so as to contact both the annular plane and the outer peripheral side surface that constitute the step portion.
Packaging equipment. The step portion extends around the entire outer periphery,
The lower end of the cardboard frame contacts both the annular plane and the outer peripheral side surface that constitute the step portion over the entire circumference.
2. The packaging device of claim 1. The lower end of the cardboard frame is folded outward and contacts both the annular plane and the outer peripheral side surface that constitute the step portion.
2. The packaging device of claim 1. The width from the base end to the tip end of the folded bottom end of the cardboard frame is the same as the width from the inner end to the outer end of the annular plane.
4. The packaging device according to claim 3. the lid is provided so as to hang down from an outer periphery of a top surface portion covering the upper space, and has a side wall portion positioned between the inner end portion and the outer end portion of the annular plane in a horizontal direction when the lid is placed on the cardboard frame;
The lower pallet and the lid are bound and fixed in the vertical direction by a binding tool with the cardboard frame sandwiched therebetween.
5. The packaging device according to claim 4.

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