JP2020001757A - Pallet - Google Patents

Abstract

To provide a pallet which is light weight and has enough strength and surface endurance that can mount a heavy object, and can separate a resin sheet from a pallet body easily.SOLUTION: A pallet 1 comprises a plate-like pallet body 2 made of foaming resin, and a resin sheet 4 covering an outer surface of the pallet body 2. The pallet body 2 has grooves 5 formed on the outer surface. The resin sheet 4 is integrally formed in a vacuum state to the pallet body 2, so that the resin sheet has portions that do not come in directly contact with surfaces of the grooves 5. According to this construction, the pallet is light weight as the pallet body 2 is made of foaming resin, and can obtain surface endurance as the resin sheet 4 is integrally formed in the vacuum state. And because the grooves 5 are formed in the pallet body 2, and the resin sheet 4 has portions that do not come in directly contact with the surfaces of the grooves 5, the pallet can separate the resin sheet 4 from the pallet body 2 easily by tearing and breaking this portion.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a pallet made of a foamed resin such as styrene foam, which is used for carrying loads using a forklift or a handlift.

  2. Description of the Related Art Conventionally, various pallets have been widely used as a carrier for carrying loads by a forklift, a handlift, or the like. For example, when transporting cargo using a forklift or the like at a logistics site or the like, the cargo is loaded on the pallet mounting surface, a fork such as a forklift is inserted into the fork insertion port on the side of the pallet, and the pallet is lifted to a predetermined height. Will be up. After the pallet is transported to the destination by operating a forklift or the like, the fork is lowered, and after the pallet is placed at the destination, the fork is removed from the fork insertion opening.

  As general pallets, those made of wood, plastic, metal (iron alloy) or paper are known. However, many of the general pallets, for example, weigh 10 kg or more even on wooden pallets, and paper pallets are lighter than plastic or metal pallets. It is compressed and has a considerable weight.

  A pallet made of foamed resin is known as a pallet that is lighter than a paper pallet (for example, see Patent Document 1). However, there is a problem that the surface of the pallet made of foamed resin is brittle and easily roughened as compared with the pallet made of wood or plastic. Therefore, a resin pallet in which the surface of the pallet body is covered with a resin sheet for reinforcement is known (for example, see Patent Document 2).

JP 2003-72754 A JP 2007-176534 A

  However, when the pallet is discarded, if the pallet body and the resin sheet are made of different materials, or if they are colored in different colors, it is necessary to separate them. However, since the resin sheet reinforces the surface of the pallet body, it is strongly adhered to the pallet body and has a predetermined durability so as not to be easily torn, so that it is easy to separate the resin sheet from the pallet body. Not. In addition, a general pallet used for a forklift has a large size of one side of 1000 mm or more, and the work of separating resin sheets requires a great deal of labor for an operator.

  The present invention has been made in view of the above problems, and is lightweight and has sufficient strength and surface durability to allow a heavy object to be placed thereon. It is an object of the present invention to provide a pallet from which resin sheets can be easily separated.

  In order to solve the above problems, the present invention is a pallet including a plate-shaped pallet body made of a foamed resin, and a resin sheet covering an outer surface of the pallet body, wherein the pallet body has an outer surface. Wherein the resin sheet is vacuum-integrally formed on the pallet body so as to have a portion that does not directly contact the surface of the groove.

  In the pallet, it is preferable that a plurality of the grooves are provided on at least one surface of the pallet body so as to be arranged in parallel.

  In the above pallet, it is preferable that a string-like member is accommodated in the groove.

  In the pallet, it is preferable that an end of the cord-like member extends outside the resin sheet.

  In the pallet, it is preferable that a cut is provided in a portion of the resin sheet adjacent to an end of the string-shaped member.

  The pallet further includes a plurality of girders arranged in a grid on the lower surface of the pallet main body, wherein the girders are covered with the resin sheet together with the pallet main body, and the grooves are provided near the girders. It is preferable to be provided along.

  In the pallet, it is preferable that the pallet body and the resin sheet are formed of different resin materials.

  In the pallet, it is preferable that the resin sheet is colored in a different color from the pallet body.

  ADVANTAGE OF THE INVENTION According to the pallet which concerns on this invention, since the main body of the pallet is made of foamed resin, it is lightweight, and since the resin sheet is integrally formed in vacuum, the surface durability is higher than the foamed resin which forms the pallet body. Can be obtained. In addition, since a groove is formed in the pallet body and the resin sheet has a portion that does not directly contact the surface of the groove, the resin sheet can be easily separated from the pallet body by cutting and breaking this portion. Can be.

(A) is a perspective view mainly showing the upper surface of the pallet according to the first embodiment of the present invention, (b) is an enlarged view of a region A in (a), and (c) is surrounded by a dashed line in (b). FIG. (A) is a perspective view mainly showing the lower surface of the pallet, and (b) is an enlarged view of a region B in (a). (A) is sectional drawing for demonstrating the beam of the same pallet, (b) is an enlarged view of the dashed-dotted area of (a). (A), (b) is a perspective view for demonstrating the procedure of vacuum forming of the resin sheet on the upper surface of the pallet. (A), (b) is a perspective view for explaining the procedure of vacuum forming of the resin sheet on the lower surface of the pallet. FIG. 3 is a perspective view showing a state where the resin sheet is cut and separated on the pallet. (A) is a perspective view mainly showing the upper surface of the pallet according to the second embodiment of the present invention, and (b) is a perspective view mainly showing the lower surface. FIG. 8A is an enlarged cross-sectional view of a portion surrounded by a dashed line in FIG. FIG. 3 is a perspective view showing a state where the resin sheet is cut and separated on the pallet.

  A pallet according to a first embodiment of the present invention will be described with reference to FIGS. As shown in FIGS. 1A and 1C and FIGS. 2A and 2B, the pallet 1 of the present embodiment is suitable for managing and transporting luggage using a forklift or a handlift at a logistics site or the like. It is used for The pallet 1 includes a plate-shaped pallet body 2 made of a foamed resin, a plurality of girders 3 provided on a lower surface of the pallet main body 2, and a resin sheet 4 covering outer surfaces of the pallet main body 2 and the girders 3. . Here, the pallet body 2 and the resin sheet 4 are formed of different resin materials, respectively, or the resin sheet 4 is colored differently from the pallet body 2. Therefore, when the pallet 1 is discarded, it is necessary to separate the resin sheet 4.

  The pallet main body 2 and the beam body 3 may be molded as an integral body, or may be molded as separate bodies. The material forming the pallet body 2 is, for example, a foamed synthetic resin such as a polyolefin-based resin such as polystyrene, polyethylene, and polypropylene. In the present embodiment, expanded polystyrene (EPS) is used. The material forming the beam body 3 is preferably the same as that of the pallet body 2, but a material having a different density or hardness from the pallet body 2 may be used, or another material may be used.

  The pallet body 2 is a plate member having a predetermined thickness and a rectangular shape in plan view. In addition, the shape of the pallet main body 2 can be appropriately selected from various shapes including a polygonal shape in plan view. The pallet body 2 includes an upper surface 21 serving as a loading surface on which a load is loaded, a lower surface 22 provided with a plurality of (9 in this embodiment) beam bodies 3, and a side surface 23 connecting the upper surface 21 and the lower surface 22. Have. The outer dimensions of the upper surface 21 and the lower surface 22 are substantially equal, and the corners of each side surface 23 are chamfered so as to be rounded. The ridges of the upper surface 21 and the side surfaces 23 are also chamfered so as to be gently rounded (see FIG. 1B).

  The girder 3 is a support member that raises the height of the upper surface 21 serving as a loading surface, and a plurality of girder 3 is arranged at a predetermined interval from an adjacent girder 3, so that a fork of a forklift is formed. The fork insertion part 10 to be inserted is formed. Here, a configuration of a pallet 1 in which three beam members 3 are arranged in parallel and fork insertion portions 10 are opened on both sides in the insertion direction of the fork, and so-called four-way insertion is shown. In addition, on the surface of the lower surface 22 of the pallet main body 2, a concave portion 24 formed in a lattice shape is provided in order to prevent the inserted fork from sliding sideways.

  As shown in FIGS. 3A and 3B, the girder 3 has a joining surface 31 joined to the pallet body 2, a placing surface 32 serving as a bottom surface when the pallet 1 is placed, and a joining surface. And a side surface 33 connecting the mounting surface 32 and the mounting surface 32. In the girder 3 of the present embodiment, the joining surface 31 and the mounting surface 32 are rectangular in plan view, and have a long block shape having four side surfaces 33. The joint surface 31 of the beam body 3 is formed with a concave portion 31a for lightening (lightening) on the lower surface side. A cover (not shown) made of a hardening resin, wood, metal, or the like is attached to the lower surface of the girder 3 in order to prevent the deterioration of the styrofoam and the generation of debris due to a plurality of transportations using a forklift. You may be.

  The girder 3 is formed so that the joint surface 31 is slightly larger than the mounting surface 32, and the joint surface 31 of the girder 3 has a flange portion 31b slightly spread outward. Note that the beam 3 is not limited to the illustrated shape, and may be, for example, an elliptical column or a polygonal column other than a square column. The side surface 33 is set such that the height of the upper surface 21 serving as the loading surface becomes a desired value. The corners of the side surfaces 33 and the corners of the side surfaces 33 and the mounting surface 32 are chamfered so as to be rounded.

  The resin sheet 4 is formed so as to cover the entire surface of the pallet body 2 and the girder body 3 except for their joints. The resin sheet 4 is a sheet member which is softened and deformed by heating, is hardened at room temperature, and has sufficient strength and surface durability for mounting a heavy object. It is preferable that a resin material different from that of the pallet body 2 be used as the material of the resin sheet 4 of the present embodiment. For example, vinyl chloride, which is a non-foamed material with a higher density than the pallet body 2 and the beam body 3, is used. Can be

  The pallet body 2 has a groove 5 formed on its outer surface. The resin sheet 4 is formed integrally with the pallet body 2 and the beam 3 by vacuum so as to have a portion that does not directly contact the surface of the groove 5. In the present embodiment, the string-shaped member (string 6) is accommodated in the groove 5, and the resin sheet 4 that is vacuum-formed is prevented from directly contacting the surface of the groove 5.

  A plurality of grooves 5 are provided on at least one surface of the pallet body 2 so as to be in parallel. In this embodiment, four rows of grooves 5 are formed on both surfaces of the upper surface 21 and the lower surface 22, respectively. The string 6 used is 0.1 to 1.5 mm. The width and depth of the groove 5 correspond to the diameter of the string 6, and for example, if the string 6 is 0.5 mm, it may be slightly larger. Examples of the material forming the cord 6 include nylon, polyester, polyethylene, polypropylene, and fluorocarbon.

  Further, in the pallet 1 of the present embodiment, as shown in FIG. 1B and FIG. 2B, the end 61 of the string 6 extends outside the resin sheet 4. In addition, as shown in FIG. 1C, a cut 41 is provided in a portion of the resin sheet 4 adjacent to the end portion 61 of the string 6.

  A procedure for integrally forming the resin sheet 4 on the pallet main body 2 in the pallet 1 of the present embodiment will be described with reference to FIGS. First, as shown in FIG. 4A, a pallet body 2 molded into a predetermined shape is prepared. Then, the strings 6 are respectively housed in the grooves 5, and the resin sheet 4 is covered from above. Although FIG. 4A shows the dyed resin sheet 4 for convenience of description, the resin sheet 4 may be transparent or may be the same white as the pallet body 2.

  Next, as shown in FIG. 4B, the pallet body 2 is placed on the upper surface of the vacuum container 71 with the upper surface 21 facing upward, and the resin sheet 4 is placed thereon. A heater 72 is disposed above the resin sheet 4, and the heater 72 heats the resin sheet 4 to soften the resin sheet 4. The vacuum vessel 71 is provided with a suction port (not shown) that passes through the internal space and the outside of the upper surface side of the vacuum vessel 71, and a decompression pump 73 that decompresses the internal space. The vacuum container 71 on which the pallet main body 2 is placed can be moved upward. The pallet main body 2 is brought into close contact with the resin sheet 4 softened by the heater 72, and the decompression pump 73 is operated so that the pallet main body can be moved in advance. The air between the pallet main body 2 and the resin sheet 4 is sucked through a vent hole (not shown) provided, and the resin sheet 4 is vacuum-adsorbed to the pallet main body 2. Thereby, the upper surface 21 and the side surface 23 of the pallet main body 2 are covered with the resin sheet 4 without gaps.

  Subsequently, as shown in FIG. 5A, a plurality of girders 3 are arranged on the lower surface 22 of the pallet main body 2, and the strings 6 are respectively stored in the grooves 5. Next, as shown in FIG. 5B, the pallet main body 2 on which the beam 3 is disposed is placed on the upper surface of the vacuum container 71 with the lower surface 22 facing upward, and the resin sheet 4 is disposed thereon. Is done. Then, the vacuum container 71 on which the pallet main body 2 is placed is moved upward to bring the pallet main body 2 into close contact with the resin sheet 4 softened by the heater 72, and the decompression pump 73 is operated to operate through the vent. Then, the resin sheet 4 is vacuum-adsorbed to the pallet body 2. Thereby, the lower surface 22 and the side surface 23 of the pallet main body 2 and the outer surface of the beam body 3 are covered with the resin sheet 4 without any gap. In the above-described procedure, the description has been given based on the configuration in which the beam body 3 is separate from the pallet body 2. However, they may be integrated, and the resin sheet 4 May be integrally formed in vacuum.

  The pallet 1 is lightweight because the main body 2 of the pallet is made of foamed resin, and the resin sheet 4 is formed integrally with the vacuum, so that the pallet 1 has a higher surface durability than the foamed resin that forms the main body 2 of the pallet. be able to.

  Further, the pallet 1 has a groove 5 formed in the pallet body 2 and the resin sheet 4 has a portion that does not directly contact the surface of the groove 5. As shown, the resin sheet 4 can be easily separated from the pallet main body 2. Therefore, the pallet main body 2 and the resin sheet 4 can be formed of different resin materials, respectively. In particular, by using a resin sheet 4 having higher strength, the durability of the pallet 1 is further improved. Can be done. Further, a resin sheet 4 having a color different from that of the pallet body 2 can be used, and a color variation according to the use of the pallet 1 can be provided.

  Further, since the plurality of grooves 5 are provided on the surface of the pallet body 2 so as to be arranged in parallel, the resin sheet 4 can be broken at a plurality of places. Can be simplified.

  Further, since the string 6 is housed in the groove 5, the resin sheet 4 can be easily torn along the groove 5 by pulling the string 6. Further, since the end 61 of the string 6 extends outside the resin sheet 4, the sorting worker can easily pull the string 6 from the end 61.

  In addition, since the cut 41 (see FIG. 1C) is provided in the resin sheet 4 at a position adjacent to the end 61 of the string 6, the sorting worker can lightly end the end 61 of the string 6. By simply pulling, the resin sheet 4 can be easily torn. In addition, when the resin sheet 4 is formed integrally with the pallet body 2 in a vacuum, the resin sheet 4 is in close contact with the string 6 in the longitudinal direction. Therefore, even if the end 61 of the string 6 is pulled, only the string 6 There is no escape. In addition, in the present embodiment, since the cuts 41 are provided, the resin sheet 4 can be cut with a weaker force without the string 6 alone coming off.

  Since the upper surface 21 of the pallet body 2 is smooth, the resin sheet 4 is two-dimensionally adhered to the upper surface 21, and the operation of peeling the resin sheet 4 from the upper surface 21 is relatively easy. On the other hand, since the lower surface 22 of the pallet body 2 is provided with the plurality of beam members 3, the resin sheet 4 is three-dimensionally adhered to the lower surface 22 and the beam member 3, and the resin sheet 4 is peeled from them. Is troublesome. Here, in the pallet 1 of the present embodiment, since the groove 5 is provided along the vicinity of the beam 3, the vicinity of the beam 3 can be cut off, and the resin sheet 4 can be easily peeled off. .

  Next, a pallet according to a second embodiment of the present invention will be described with reference to FIGS. As shown in FIGS. 7A and 7B and FIG. 8, the string 6 is not accommodated in the groove 5, but a filling member 51 made of a material such as elastic urethane is accommodated (in particular, FIG. 8). In the present embodiment, since the outer surface of the groove 5 and the resin sheet 4 do not directly contact each other and have a gap, for example, if a perforation is formed along the groove 5 with a perforation cutter, The resin sheet can be broken along the eyes, and the pallet main body 2 and the resin sheet 4 can be easily separated as shown in FIG.

  The present invention is not limited to the configuration of the above-described embodiment, and various modifications can be made without departing from the spirit of the invention. Further, in the above-described embodiment, an example has been described in which the structure of the pallet 1 is applied to the transport of luggage by a forklift, but it is needless to say that the structure of the pallet 1 can be applied to other structures made of synthetic foam. Although the pallet 1 of the above embodiment is preferably used for a forklift, the pallet 1 may be of a floor type or a movable type having casters provided on the lower surface of the pallet body 2, for example.

DESCRIPTION OF SYMBOLS 1 Pallet 2 Pallet main body 21 Upper surface 22 Lower surface 4 Resin sheet 5 Groove 6 String (string-like member)

Claims (8)

A pallet including a plate-shaped pallet body made of a foamed resin, and a resin sheet covering an outer surface of the pallet body,
The pallet body has a groove formed on the outer surface thereof,
A pallet, wherein the resin sheet is formed integrally with the pallet body so as to have a portion that does not directly contact the surface of the groove.   2. The pallet according to claim 1, wherein a plurality of the grooves are provided on at least one surface of the pallet body so as to be in parallel. 3.   The pallet according to claim 1, wherein a string member is accommodated in the groove.   The pallet according to claim 3, wherein an end of the cord-like member extends outside the resin sheet.   The pallet according to claim 4, wherein a cut is provided in a portion of the resin sheet adjacent to an end of the string-shaped member. The pallet further includes a plurality of girders arranged in a lattice on the lower surface of the pallet body,
The beam body is covered with the resin sheet together with the pallet body,
The pallet according to claim 1, wherein the groove is provided along a vicinity of the beam body.   The pallet according to any one of claims 1 to 6, wherein the pallet main body and the resin sheet are formed of different resin materials, respectively.   The pallet according to any one of claims 1 to 7, wherein the resin sheet is colored in a different color from the pallet body.

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