JP7397284B2 - Pallet and manufacturing method - Google Patents

Pallet and manufacturing method Download PDF

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Publication number
JP7397284B2
JP7397284B2 JP2019172322A JP2019172322A JP7397284B2 JP 7397284 B2 JP7397284 B2 JP 7397284B2 JP 2019172322 A JP2019172322 A JP 2019172322A JP 2019172322 A JP2019172322 A JP 2019172322A JP 7397284 B2 JP7397284 B2 JP 7397284B2
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JP
Japan
Prior art keywords
molded body
resin molded
pallet
slip member
resin
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
JP2019172322A
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Japanese (ja)
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JP2021050003A (en
Inventor
素晴 藤井
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kyoraku Co Ltd
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Kyoraku Co Ltd
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Publication date
Application filed by Kyoraku Co Ltd filed Critical Kyoraku Co Ltd
Priority to JP2019172322A priority Critical patent/JP7397284B2/en
Priority to CN201980095873.6A priority patent/CN113748069B/en
Priority to PCT/JP2019/050898 priority patent/WO2021053838A1/en
Publication of JP2021050003A publication Critical patent/JP2021050003A/en
Application granted granted Critical
Publication of JP7397284B2 publication Critical patent/JP7397284B2/en
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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D19/00Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
    • B65D19/0004Rigid pallets without side walls
    • B65D19/0006Rigid pallets without side walls the load supporting surface being made of a single element
    • B65D19/0008Rigid pallets without side walls the load supporting surface being made of a single element forming a continuous plane contact surface
    • B65D19/001Rigid pallets without side walls the load supporting surface being made of a single element forming a continuous plane contact surface the base surface being made of a single element
    • B65D19/0014Rigid pallets without side walls the load supporting surface being made of a single element forming a continuous plane contact surface the base surface being made of a single element forming discontinuous or non-planar contact surfaces
    • B65D19/0018Rigid pallets without side walls the load supporting surface being made of a single element forming a continuous plane contact surface the base surface being made of a single element forming discontinuous or non-planar contact surfaces and each contact surface having a discrete foot-like shape
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/001Combinations of extrusion moulding with other shaping operations
    • B29C48/0017Combinations of extrusion moulding with other shaping operations combined with blow-moulding or thermoforming
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/07Flat, e.g. panels
    • B29C48/08Flat, e.g. panels flexible, e.g. films
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25Component parts, details or accessories; Auxiliary operations
    • B29C48/30Extrusion nozzles or dies
    • B29C48/305Extrusion nozzles or dies having a wide opening, e.g. for forming sheets
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25Component parts, details or accessories; Auxiliary operations
    • B29C48/36Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/475Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using pistons, accumulators or press rams
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C51/00Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
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    • B29C51/00Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
    • B29C51/16Lining or labelling
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
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    • B29C2791/006Using vacuum
    • BPERFORMING OPERATIONS; TRANSPORTING
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    • B29C49/00Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/02Combined blow-moulding and manufacture of the preform or the parison
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    • BPERFORMING OPERATIONS; TRANSPORTING
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    • B29C49/00Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/02Combined blow-moulding and manufacture of the preform or the parison
    • B29C49/04Extrusion blow-moulding
    • B29C49/04104Extrusion blow-moulding extruding the material discontinuously
    • BPERFORMING OPERATIONS; TRANSPORTING
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    • B29C49/00Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/42Component parts, details or accessories; Auxiliary operations
    • B29C49/64Heating or cooling preforms, parisons or blown articles
    • B29C49/6409Thermal conditioning of preforms
    • B29C49/6427Cooling of preforms
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C49/00Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/42Component parts, details or accessories; Auxiliary operations
    • B29C49/78Measuring, controlling or regulating
    • B29C49/80Testing, e.g. for leaks
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C51/00Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
    • B29C51/006Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor for making articles having hollow walls
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C51/00Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C51/00Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
    • B29C51/12Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor of articles having inserts or reinforcements
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
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    • B65D2519/00034Plastic
    • BPERFORMING OPERATIONS; TRANSPORTING
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    • B65D2519/00273Overall construction of the pallet made of more than one piece
    • BPERFORMING OPERATIONS; TRANSPORTING
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    • B65D2519/00338Overall construction of the base surface shape of the contact surface of the base contact surface having a discrete foot-like shape
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    • B65D2519/00825Finishing of the external surfaces
    • B65D2519/0083Anti-slip means
    • B65D2519/0084Separated elements, e.g. including in-moulded elements

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Pallets (AREA)

Description

特許法第30条第2項適用 [展示日]平成31年2月20日,[展示会名、開催場所]第16回シーフードショー大阪 アジア太平洋トレードセンター(大阪府大阪市住之江区南港北2-1-10),[展示日]令和1年8月21日,[展示会名、開催場所]第21回ジャパンインターナショナルシーフードショー 東京ビッグサイト 南展示棟(東京都江東区有明3-11-1)Article 30, Paragraph 2 of the Patent Act applies [Exhibition date] February 20, 2019, [Exhibition name, venue] 16th Seafood Show Osaka Asia Pacific Trade Center (2-Nankokita, Suminoe-ku, Osaka-shi, Osaka) 1-10), [Exhibition date] August 21, 2020, [Exhibition name, venue] 21st Japan International Seafood Show Tokyo Big Sight South Exhibition Building (3-11-1 Ariake, Koto-ku, Tokyo) )

本発明は、パレット及び製造方法に関する。 The present invention relates to a pallet and a manufacturing method.

モノの運搬のため、種々のパレットが提案されている。例えば、特許文献1には、パレットに載せた荷物の安定化を図ることを目的としたパレットが開示されている。 Various pallets have been proposed for transporting goods. For example, Patent Document 1 discloses a pallet aimed at stabilizing cargo placed on the pallet.

特開2007-176534号公報Japanese Patent Application Publication No. 2007-176534

ところで、パレットは、パレットを移動させる機械(例:フォークリフト)との間の安定化についても考慮すべきである。 By the way, consideration should also be given to stabilizing the pallet with the machine that moves the pallet (for example, a forklift).

本発明は、かかる事情を鑑みてなされたものであり、安定した移動が可能なパレット及び製造方法を提供することを目的とする。 The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a pallet that can be stably moved and a manufacturing method.

本発明の一態様によれば、パレットであって、中空の樹脂成形体、及び、滑止部材を備え、前記樹脂成形体は、差込孔を備え、前記滑止部材は、差込部を備え、前記差込部が前記差込孔に差し込まれた状態で、前記滑止部材が前記樹脂成形体に取り付けられており、前記滑止部材は、前記樹脂成形体の下面から前記樹脂成形体の内部に向けて取り付けられている、パレットが提供される。 According to one aspect of the present invention, the pallet includes a hollow resin molded body and a non-slip member, the resin molded body has an insertion hole, and the non-slip member has an insertion part. The anti-slip member is attached to the resin molded body in a state in which the insertion portion is inserted into the insertion hole, and the anti-slip member is inserted into the resin molded body from the bottom surface of the resin molded body. A pallet is provided which is mounted towards the interior of the pallet.

本発明の一態様によれば、パレットを構成する樹脂成形体の下面から滑止部材は樹脂成形体に取り付けられている。ここで、滑止部材は差込部を備え、樹脂成形体は差込孔を備える。そして、差込部が差込孔に差し込まれた状態で、滑止部材が樹脂成形体に取り付けられる。これにより、滑止部材によってパレット移動が安定する。 According to one aspect of the present invention, the anti-slip member is attached to the resin molded body from the bottom surface of the resin molded body constituting the pallet. Here, the anti-slip member includes an insertion portion, and the resin molded body includes an insertion hole. Then, with the insertion portion inserted into the insertion hole, the anti-slip member is attached to the resin molded body. Thereby, the movement of the pallet is stabilized by the anti-slip member.

本発明の一実施形態に係るパレット3の上面斜視図である。FIG. 3 is a top perspective view of a pallet 3 according to an embodiment of the present invention. パレット3の下面斜視図である。FIG. 3 is a bottom perspective view of the pallet 3. FIG. パレット3の底面図である。FIG. 3 is a bottom view of the pallet 3. FIG. 図4Aは、滑止部材40の斜視図である。図4Bは、図4Aと異なる方向から見た滑止部材40の斜視図である。FIG. 4A is a perspective view of the anti-slip member 40. FIG. 4B is a perspective view of the anti-slip member 40 seen from a different direction from FIG. 4A. 図2のA-A線端面図である。3 is an end view taken along line AA in FIG. 2. FIG. 図5の領域Xの部分拡大図である。6 is a partially enlarged view of region X in FIG. 5. FIG. 図6の状態から滑止部材40を除いた状態の図である。7 is a diagram showing a state in which the anti-slip member 40 is removed from the state shown in FIG. 6. FIG. 図2のB-B線端面図である。3 is an end view taken along line BB in FIG. 2. FIG. 成形機1の概念図である。1 is a conceptual diagram of a molding machine 1. FIG. 垂下工程を説明するための概念図である。It is a conceptual diagram for explaining a hanging process. 賦形工程を説明するための概念図である。FIG. 2 is a conceptual diagram for explaining a shaping process. インサート工程及び型締工程を説明するための概念図である。It is a conceptual diagram for explaining an insert process and a mold clamping process. 構造体3Pの端面図である。It is an end view of structure 3P. 図7の領域Xの形成方法を説明するための図である。8 is a diagram for explaining a method of forming region X in FIG. 7. FIG.

以下、図面を用いて本発明の実施形態について説明する。以下に示す実施形態中で示した各種特徴事項は、互いに組み合わせ可能である。 Embodiments of the present invention will be described below with reference to the drawings. Various features shown in the embodiments described below can be combined with each other.

1.パレット3
図1~図8を用いて、本発明の一実施形態に係るパレット3について説明する。図1及び図5に示すように、パレット3は、中空の樹脂成形体30、及び、滑止部材40を備える。本実施形態では、パレット3はさらに発泡体50を備える。図5に示すように、発泡体50は、樹脂成形体30内に配置される。
1. Palette 3
A pallet 3 according to an embodiment of the present invention will be described using FIGS. 1 to 8. As shown in FIGS. 1 and 5, the pallet 3 includes a hollow resin molded body 30 and a non-slip member 40. As shown in FIGS. In this embodiment, the pallet 3 further includes a foam 50. As shown in FIG. 5, the foam 50 is placed within the resin molded body 30.

樹脂成形体30は、樹脂により形成されるものである。発泡体50は、任意の発泡材料により形成され、断熱効果及び軽量化に寄与するものである。滑止部材40は、パレット3搬送時の摩擦抵抗を低減する部材であり、パレットを構成する樹脂成形体30よりも摩擦係数が大きい材料で形成される。滑止部材40の材質は特に限定されないが、例えばエラストマーにより構成することができる。 The resin molded body 30 is formed of resin. The foam 50 is made of any foam material and contributes to heat insulation and weight reduction. The anti-slip member 40 is a member that reduces frictional resistance during conveyance of the pallet 3, and is formed of a material having a larger coefficient of friction than the resin molded body 30 constituting the pallet. The material of the anti-slip member 40 is not particularly limited, but may be made of elastomer, for example.

図1及び図2に示すように、樹脂成形体30は、上面31及び下面32を備える。本実施形態では、上面31及び下面32は互いに対向する面である。 As shown in FIGS. 1 and 2, the resin molded body 30 includes an upper surface 31 and a lower surface 32. In this embodiment, the upper surface 31 and the lower surface 32 are surfaces facing each other.

また、本実施形態では、樹脂成形体30は、肉抜き孔が設けられない状態で形成されることが好ましい。具体的には、樹脂成形体30を構成する上面31及び下面32に加え、上面31及び下面32以外の面においても肉抜孔が存在しないことが好ましい。これは、従来のパレット3と比べ、樹脂成形体30の内部に発泡体50が存在することにより重量が軽くなっていること、及び、後述する封止面43と樹脂成形体30に形成された取付凹部34の内壁(側壁35)が当接することによる水の侵入防止効果により実現されるものである。具体的には、従来のパレットでは、軽量化のために肉抜きが必要であり、且つ、洗浄時等に水がパレットの内部に侵入した場合にかかる水を外部を排出するために肉抜孔を設けることが必須であったが、本実施形態に係るパレット3では、発泡体50をインサートすることによる軽量化に加え、封止面43による水の侵入の防止が実現されるので、従来のパレットのような肉抜孔が不要になり、美観が向上するという効果を奏する。さらに、肉抜孔が存在しないため、断熱性が向上する。これは、肉抜孔が存在する場合には、接地面から伝わる熱が肉抜孔を介して積載物に伝わりやすくなるためである。 Moreover, in this embodiment, it is preferable that the resin molded body 30 is formed without any lightening holes. Specifically, in addition to the upper surface 31 and lower surface 32 constituting the resin molded body 30, it is preferable that no lightening holes exist on surfaces other than the upper surface 31 and the lower surface 32. This is because compared to the conventional pallet 3, the weight is lighter due to the presence of the foam 50 inside the resin molded body 30, and the sealing surface 43 and the sealing surface 43 formed on the resin molded body 30, which will be described later, are lighter. This is achieved by the effect of preventing water from entering due to the abutment of the inner wall (side wall 35) of the mounting recess 34. Specifically, conventional pallets require lightening in order to reduce their weight, and in addition, lightening holes are required to drain water from the outside when water enters the inside of the pallet during cleaning. However, in the pallet 3 according to the present embodiment, the weight is reduced by inserting the foam 50, and the sealing surface 43 prevents water from entering. This eliminates the need for lightening holes such as the one shown in the figure, and has the effect of improving the aesthetic appearance. Furthermore, since there are no hollow holes, the heat insulation properties are improved. This is because when a lightening hole exists, heat transmitted from the ground surface is easily transmitted to the loaded object via the lightening hole.

図2に示すように、パレット3を構成する樹脂成形体30の下面32側には、複数の脚部33が形成される。本実施形態では、中心に配置された脚部33を囲むように8個の脚部33が形成される。図3に示すように、複数の脚部33は、第1方向及び第2方向からフォークリフトによりパレット3を搭載可能な位置に形成されている。また、本実施形態では、図2に示すように、下面32には、複数の凹部32bが形成される。凹部32bを設けることにより、パレット3の搬送者がパレット3を持ち上げるときに指を引っ掛けることができる。 As shown in FIG. 2, a plurality of legs 33 are formed on the lower surface 32 side of the resin molded body 30 that constitutes the pallet 3. As shown in FIG. In this embodiment, eight leg parts 33 are formed so as to surround the leg part 33 arranged at the center. As shown in FIG. 3, the plurality of legs 33 are formed at positions where the pallet 3 can be mounted by a forklift from the first direction and the second direction. Furthermore, in this embodiment, as shown in FIG. 2, a plurality of recesses 32b are formed in the lower surface 32. By providing the recessed portion 32b, the person carrying the pallet 3 can hook his/her fingers thereon when lifting the pallet 3.

また、図3に示すように、滑止部材40は、樹脂成形体30の下面32に取り付けられている。図4A及び図4Bに示すように、滑止部材40は、接触面41、連結面42、封止面43、基面44、軸45、差込部46を備える。 Further, as shown in FIG. 3, the anti-slip member 40 is attached to the lower surface 32 of the resin molded body 30. As shown in FIGS. 4A and 4B, the anti-slip member 40 includes a contact surface 41, a connecting surface 42, a sealing surface 43, a base surface 44, a shaft 45, and an insertion portion 46.

図3及び図6に示すように、接触面41は、パレット3を搬送する機械の一部と接触する面であり、例えば、フォークリフトの爪又はサヤと接触する面である。封止面43は、樹脂成形体30の下面32側に形成された取付凹部34(図6及び図7を用いて後述)の内壁と当接するように構成される。連結面42は、接触面41と封止面43を連結する面である。また、封止面43は、基面44から垂直に形成される。そして、基面44から垂直且つ封止面43と逆方向に軸45が形成される。軸45の先端には、先端に向けて先細り形状の差込部46が形成される。 As shown in FIGS. 3 and 6, the contact surface 41 is a surface that comes into contact with a part of the machine that conveys the pallet 3, for example, a surface that comes into contact with the claws or sheaths of a forklift. The sealing surface 43 is configured to abut against an inner wall of a mounting recess 34 (described later with reference to FIGS. 6 and 7) formed on the lower surface 32 side of the resin molded body 30. The connecting surface 42 is a surface that connects the contact surface 41 and the sealing surface 43. Furthermore, the sealing surface 43 is formed perpendicularly from the base surface 44 . A shaft 45 is formed perpendicularly from the base surface 44 and in a direction opposite to the sealing surface 43 . At the tip of the shaft 45, an insertion portion 46 is formed that tapers toward the tip.

滑止部材40は、フォークリフトによるパレット3の搭載が第1方向及び第2方向のいずれの方向からであってもフォークリフトと当接する箇所に取り付けられていることが好ましい。ここで、図3中の破線部分は、フォークリフトの爪又はサヤと接触するパレット3の下面32の範囲を模式的に示すものである。ここで、図3の例では、第1方向及び第2方向は互いに垂直な方向であるが、これに限定されない。これにより、第1方向及び第2方向のいずれの方向から、フォークリフトの爪又はサヤによりパレット3の下面32を持ち上げられた場合でも、滑止部材40とフォークリフトの爪又はサヤが接触することにより、フォークリフトの爪又はサヤとパレット3が滑ることを低減することができる。 Preferably, the anti-slip member 40 is attached to a location where the pallet 3 comes into contact with a forklift, regardless of whether the pallet 3 is loaded by the forklift from either the first direction or the second direction. Here, the broken line portion in FIG. 3 schematically shows the range of the lower surface 32 of the pallet 3 that comes into contact with the claw or sheath of the forklift. Here, in the example of FIG. 3, the first direction and the second direction are directions perpendicular to each other, but are not limited thereto. As a result, even if the lower surface 32 of the pallet 3 is lifted by the forklift's claw or sheath from either the first direction or the second direction, the non-slip member 40 and the forklift's claw or sheath will come into contact with each other. It is possible to reduce slippage between the pallet 3 and the claws or sheaths of the forklift.

図5に示すように、滑止部材40を通る端面において、発泡体50の両端部(角部37a)において、樹脂成形体30と発泡体50の間に空間Sが形成される。空間Sを形成することにより、パレット3の搬送中にパレット3が他の備品等と接触した場合でも、パレット3の角部の損傷を低減することができる。これは、パレット3の搬送中において、角部が接触しやすいためである。 As shown in FIG. 5, a space S is formed between the resin molded body 30 and the foamed body 50 at both ends (corner portions 37a) of the foamed body 50 on the end face passing through the anti-slip member 40. By forming the space S, it is possible to reduce damage to the corners of the pallet 3 even if the pallet 3 comes into contact with other fixtures or the like while the pallet 3 is being transported. This is because the corners are likely to come into contact with each other while the pallet 3 is being transported.

また、図8に示すように、複数の脚部33を通る端面において、発泡体50の両端部(角部37b)において、樹脂成形体30と発泡体50の間に空間Sが形成される。空間Sを形成することにより、パレット3の搬送中にパレット3が他の備品等と接触した場合でも、パレット3の周縁の損傷を低減することができる。これは、パレット3の搬送中において、周縁が接触しやすいためである。 Further, as shown in FIG. 8, a space S is formed between the resin molded body 30 and the foamed body 50 at both ends (corner portions 37b) of the foamed body 50 on the end face passing through the plurality of legs 33. By forming the space S, it is possible to reduce damage to the periphery of the pallet 3 even if the pallet 3 comes into contact with other fixtures or the like while the pallet 3 is being transported. This is because the periphery of the pallet 3 tends to come into contact with each other while the pallet 3 is being transported.

図6及び図7に示すように、滑止部材40は、樹脂成形体30の下面32から樹脂成形体30の内部に向けて取り付けられている。また、滑止部材40は、下面32から樹脂成形体30の外部に向けて突出するように構成されることが好ましい。 As shown in FIGS. 6 and 7, the anti-slip member 40 is attached from the lower surface 32 of the resin molded body 30 toward the inside of the resin molded body 30. Moreover, it is preferable that the anti-slip member 40 is configured to protrude from the lower surface 32 toward the outside of the resin molded body 30.

図6及び図7に示すように、本実施形態では、樹脂成形体30は、下面32に取付凹部34を備える。そして、滑止部材40は、取付凹部34にその一部を挿入された状態で樹脂成形体30に取り付けられている。本実施形態では、滑止部材40の一部である差込部46が取付凹部34に挿入されている。また、図6に示すように、封止面43は、下面32の延在方向に非平行に形成される。図6の例では、封止面43は、下面32の延在方向に垂直に形成される。 As shown in FIGS. 6 and 7, in this embodiment, the resin molded body 30 includes a mounting recess 34 on the lower surface 32. As shown in FIGS. The anti-slip member 40 is attached to the resin molded body 30 with a portion thereof inserted into the attachment recess 34. In this embodiment, an insertion portion 46 that is a part of the anti-slip member 40 is inserted into the mounting recess 34 . Further, as shown in FIG. 6, the sealing surface 43 is formed non-parallel to the extending direction of the lower surface 32. In the example of FIG. 6, the sealing surface 43 is formed perpendicular to the direction in which the lower surface 32 extends.

本実施形態では、図6及び図7に示すように、樹脂成形体30は、差込孔36を備える。そして、滑止部材40の差込部46が差込孔36に差し込まれた状態で、滑止部材40が樹脂成形体30に取り付けられている。なお、差込部46は、封止面43より樹脂成形体30の内側に設けられる。 In this embodiment, as shown in FIGS. 6 and 7, the resin molded body 30 includes an insertion hole 36. The anti-slip member 40 is attached to the resin molded body 30 with the insertion portion 46 of the anti-slip member 40 inserted into the insertion hole 36. Note that the insertion portion 46 is provided inside the resin molded body 30 from the sealing surface 43.

図6に示すように、封止面43は、樹脂成形体30の下面32側に形成された取付凹部34(図7参照)の内壁(側壁35)と当接するように構成される。また、差込部46が位置する周辺と、側壁35の近傍に、空間Sが形成される。また、取付凹部34の内側(破線箇所)において、取付凹部34と発泡体50が溶着している。これは、取付凹部34と発泡体50を溶着させることにより、溶着箇所の周辺の強度を高めるためである。このように、取付凹部34と発泡体50をわずかに溶着させ、側壁35の近傍に空間Sを形成することにより、滑止部材40を差込孔36に圧入する際に樹脂が撓みやすくなるとともに、取付凹部34と発泡体50を溶着させることにより、滑止部材40を差込孔36に圧入する際に樹脂成形体30が破損することを低減することができる。かかる構成により、滑止部材40を所定の強度以上の力で押し混むと滑止部材40が撓むようになり、圧入しやすく、一度圧入されると抜けにくくなる。 As shown in FIG. 6, the sealing surface 43 is configured to come into contact with the inner wall (side wall 35) of the mounting recess 34 (see FIG. 7) formed on the lower surface 32 side of the resin molded body 30. Further, a space S is formed around where the insertion portion 46 is located and near the side wall 35 . Furthermore, the mounting recess 34 and the foam 50 are welded to each other inside the mounting recess 34 (indicated by the broken line). This is to increase the strength around the welding location by welding the attachment recess 34 and the foam 50. In this way, by slightly welding the mounting recess 34 and the foam 50 and forming the space S in the vicinity of the side wall 35, the resin becomes easier to bend when the anti-slip member 40 is press-fitted into the insertion hole 36. By welding the mounting recess 34 and the foam 50, it is possible to reduce damage to the resin molded body 30 when the anti-slip member 40 is press-fitted into the insertion hole 36. With this configuration, when the anti-slip member 40 is pushed together with a force greater than a predetermined strength, the anti-slip member 40 is bent, making it easy to press-fit, and once press-fitted, difficult to come out.

ここで、下面32と、滑止部材40の樹脂成形体30の外側の端面までの距離をdとし、下面32と、上面31までの距離Dとした場合、(d/D)の値は、0.01~0.3であることが好ましい。好ましくは、(d/D)の値は、0.02~0.2であり、さらに好ましくは、0.03~0.1である。(d/D)の値は、具体的には例えば、0.01、0.02、0.03、0.04、0.05、0.06、0.07、0.08、0.09、0.1、0.11、0.12、0.13、0.14、0.15、0.16、0.17、0.18、0.19、0.2、0.21、0.22、0.23、0.24、0.25、0.26、0.27、0.28、0.29、0.3であり、ここで例示した数値の何れか2つの間の範囲内であってもよい。 Here, if the distance between the lower surface 32 and the outer end surface of the resin molded body 30 of the anti-slip member 40 is d, and the distance between the lower surface 32 and the upper surface 31 is D, then the value of (d/D) is: It is preferably 0.01 to 0.3. Preferably, the value of (d/D) is from 0.02 to 0.2, more preferably from 0.03 to 0.1. Specifically, the value of (d/D) is, for example, 0.01, 0.02, 0.03, 0.04, 0.05, 0.06, 0.07, 0.08, 0.09. , 0.1, 0.11, 0.12, 0.13, 0.14, 0.15, 0.16, 0.17, 0.18, 0.19, 0.2, 0.21, 0 .22, 0.23, 0.24, 0.25, 0.26, 0.27, 0.28, 0.29, 0.3, and the range between any two of the numerical values exemplified here. It may be within.

また、dの大きさは、0mmより大きく、20mm以下であることが好ましい。これは、dが大きすぎると、フォークリフトの爪又はサヤをパレット3の下面32に形成された脚部33の間に挿入する際に、滑止部材40の接触面41とフォークリフトの爪又はサヤが干渉する恐れが生じる。かかる干渉により、接触面41及びフォークリフトの爪又はサヤの破損につながるため好ましくないからである。 Further, the size of d is preferably larger than 0 mm and smaller than 20 mm. This is because if d is too large, when inserting the forklift's claw or sheath between the legs 33 formed on the lower surface 32 of the pallet 3, the contact surface 41 of the anti-slip member 40 and the forklift's claw or sheath may There is a risk of interference. This is because such interference leads to damage to the contact surface 41 and the claw or sheath of the forklift, which is undesirable.

そして、図6、図7及び図14に示すように、滑止部材40の取付方向の中心線が、樹脂成形体30に形成された空気通過孔(AH)の近傍に配置されるように滑止部材40が樹脂成形体30に取り付けられている。本実施形態では、差込孔36は、空気通過孔(AH)と略同軸に孔形成機を用いて形成されるものである。換言すると、差込孔36は、樹脂成形体30に形成された空気通過孔(AH)の径を拡張した孔である。ここで、空気通過孔(AH)は、真空吸引の場合には、発泡体50を内包した樹脂成形体30において、樹脂成形体30の内部に残留した空気を樹脂成形体30の外部に排出するために形成されるものである。樹脂成形体30内部の残留空気については公知の課題であり、空気通過孔(AH)を形成した場合、一般的には空気通過孔(AH)を隠蔽するための様々な処理が施される。本発明の一実施形態に係るパレット3では、滑止部材40の取付方向の中心線が、樹脂成形体30に形成された空気通過孔(AH)の近傍に配置されるように滑止部材40が樹脂成形体30に取り付けられている。好ましくは、滑止部材40の軸と空気通過孔(AH)の軸が略同軸上に構成される。また、空気通過孔(AH)と略同軸に差込孔36を形成することにより、樹脂成形体30に形成された空気通過孔(AH)が差込孔36により隠蔽される。さらに、滑止部材40の差込部46を差込孔36に差し込むことにより、結果的に空気通過孔(AH)の隠蔽と滑止部材40の取り付けを1つの部材で実現することができる。これにより、滑止部材40よりパレット3移動の安定化と、空気通過孔(AH)の隠蔽を両立することが可能になる。 Then, as shown in FIGS. 6, 7, and 14, the slider is arranged such that the center line of the anti-slip member 40 in the mounting direction is located near the air passage hole (AH) formed in the resin molded body 30. A stopper member 40 is attached to the resin molded body 30. In this embodiment, the insertion hole 36 is formed substantially coaxially with the air passage hole (AH) using a hole forming machine. In other words, the insertion hole 36 is a hole obtained by expanding the diameter of the air passage hole (AH) formed in the resin molded body 30. Here, in the case of vacuum suction, the air passage hole (AH) discharges air remaining inside the resin molded body 30 to the outside of the resin molded body 30 in the resin molded body 30 containing the foam 50. It is formed for the purpose of Residual air inside the resin molded body 30 is a well-known problem, and when air passage holes (AH) are formed, various treatments are generally performed to hide the air passage holes (AH). In the pallet 3 according to the embodiment of the present invention, the anti-slip member 40 is arranged such that the center line in the mounting direction of the anti-slip member 40 is located near the air passage hole (AH) formed in the resin molded body 30. is attached to the resin molded body 30. Preferably, the axis of the anti-slip member 40 and the axis of the air passage hole (AH) are substantially coaxial. Further, by forming the insertion hole 36 substantially coaxially with the air passage hole (AH), the air passage hole (AH) formed in the resin molded body 30 is hidden by the insertion hole 36. Furthermore, by inserting the insertion portion 46 of the anti-slip member 40 into the insertion hole 36, it is possible to conceal the air passage hole (AH) and attach the anti-slip member 40 with one member. This makes it possible to both stabilize the movement of the pallet 3 and hide the air passage holes (AH) using the anti-slip member 40.

また、樹脂成形体30の内部に発泡体50が設けられることにより、発泡体50の断熱効果によりパレット3の載置面から受ける熱の影響を低減することができる。 Further, by providing the foam 50 inside the resin molded body 30, the effect of heat received from the mounting surface of the pallet 3 can be reduced due to the heat insulating effect of the foam 50.

2.成形機1の構成
次に、図9を用いて、本発明の一実施形態に係るパレット3の製造方法の実施に利用可能な成形機1について説明する。成形機1は、樹脂供給装置2と、Tダイ18と、第1及び第2金型21,22を備える。樹脂供給装置2は、ホッパー12と、押出機13と、アキュームレータ17を備える。押出機13とアキュームレータ17は、連結管19aを介して連結される。アキュームレータ17とTダイ18は、連結管19bを介して連結される。以下、各構成について詳細に説明する。
2. Configuration of Molding Machine 1 Next, with reference to FIG. 9, a molding machine 1 that can be used to implement a method for manufacturing a pallet 3 according to an embodiment of the present invention will be described. The molding machine 1 includes a resin supply device 2, a T-die 18, and first and second molds 21 and 22. The resin supply device 2 includes a hopper 12, an extruder 13, and an accumulator 17. The extruder 13 and the accumulator 17 are connected via a connecting pipe 19a. The accumulator 17 and the T-die 18 are connected via a connecting pipe 19b. Each configuration will be explained in detail below.

<ホッパー12、押出機13>
ホッパー12は、原料樹脂11を押出機13のシリンダ13a内に投入するために用いられる。原料樹脂11の形態は、特に限定されないが、通常は、ペレット状である。原料樹脂は、例えばポリオレフィンなどの熱可塑性樹脂であり、ポリオレフィンとしては、低密度ポリエチレン、直鎖状低密度ポリエチレン、高密度ポリエチレン、ポリプロピレン、エチレン-プロピレン共重合体及びその混合物などが挙げられる。原料樹脂11は、ホッパー12からシリンダ13a内に投入された後、シリンダ13a内で加熱されることによって溶融されて溶融樹脂になる。また、シリンダ13a内に配置されたスクリューの回転によってシリンダ13aの先端に向けて搬送される。スクリューは、シリンダ13a内に配置され、その回転によって溶融樹脂を混練しながら搬送する。スクリューの基端にはギア装置が設けられており、ギア装置によってスクリューが回転駆動される。シリンダ13a内に配置されるスクリューの数は、1本でもよく、2本以上であってもよい。
<Hopper 12, extruder 13>
The hopper 12 is used to charge the raw resin 11 into the cylinder 13a of the extruder 13. Although the form of the raw resin 11 is not particularly limited, it is usually in the form of pellets. The raw material resin is, for example, a thermoplastic resin such as polyolefin, and examples of the polyolefin include low density polyethylene, linear low density polyethylene, high density polyethylene, polypropylene, ethylene-propylene copolymer, and mixtures thereof. The raw resin 11 is charged into the cylinder 13a from the hopper 12, and then heated and melted into a molten resin in the cylinder 13a. Furthermore, the material is conveyed toward the tip of the cylinder 13a by rotation of a screw disposed within the cylinder 13a. The screw is disposed within the cylinder 13a, and its rotation transports the molten resin while kneading it. A gear device is provided at the base end of the screw, and the screw is rotationally driven by the gear device. The number of screws arranged within the cylinder 13a may be one, or two or more.

<アキュームレータ17、Tダイ18>
原料樹脂と発泡剤が溶融混練されてなる発泡樹脂は、シリンダ13aの樹脂押出口から押し出され、連結管19aを通じてアキュームレータ17内に注入される。アキュームレータ17は、シリンダ17aとその内部で摺動可能なピストン17bを備えており、シリンダ17a内に溶融樹脂11aが貯留可能になっている。そして、シリンダ17a内に発泡樹脂が所定量貯留された後にピストン17bを移動させることによって、連結管19bを通じて発泡樹脂をTダイ18内に設けられたスリットから押し出して垂下させて第1及び第2樹脂シート23a,23bを形成する。
<Accumulator 17, T die 18>
The foamed resin obtained by melting and kneading the raw material resin and the foaming agent is extruded from the resin extrusion port of the cylinder 13a and injected into the accumulator 17 through the connecting pipe 19a. The accumulator 17 includes a cylinder 17a and a piston 17b that is slidable inside the cylinder 17a, and the molten resin 11a can be stored in the cylinder 17a. Then, by moving the piston 17b after a predetermined amount of foamed resin is stored in the cylinder 17a, the foamed resin is pushed out through the slit provided in the T-die 18 through the connecting pipe 19b and is made to hang down. Resin sheets 23a and 23b are formed.

<第1及び第2金型21,22>
第1及び第2樹脂シート23a,23bは、第1及び第2金型21,22間に導かれる。図9及び図10に示すように、第1金型21には、多数の減圧吸引孔(不図示)が設けられており、第1樹脂シート23aを減圧吸引して第1金型21に沿った形状に賦形することが可能になっている。第1金型21は、凹部21cを有する形状になっており、凹部21cを取り囲むようにピンチオフ部21dが設けられている。第2金型22には、多数の減圧吸引孔(不図示)が設けられており、第2樹脂シート23bを減圧吸引して第2金型22のキャビティ22bに沿った形状に賦形することが可能になっている。キャビティ22bは、凸部22c及び凹部22eを有する形状になっており、凸部22c及び凹部22eを取り囲むようにピンチオフ部21dが設けられている。
<First and second molds 21, 22>
The first and second resin sheets 23a and 23b are guided between the first and second molds 21 and 22. As shown in FIGS. 9 and 10, the first mold 21 is provided with a large number of vacuum suction holes (not shown), and the first resin sheet 23a is vacuum-suctioned along the first mold 21. It is now possible to form it into a specific shape. The first mold 21 has a shape having a recess 21c, and a pinch-off portion 21d is provided to surround the recess 21c. The second mold 22 is provided with a large number of vacuum suction holes (not shown), and the second resin sheet 23b is vacuum-suctioned and shaped into a shape that conforms to the cavity 22b of the second mold 22. is now possible. The cavity 22b has a shape having a convex portion 22c and a concave portion 22e, and a pinch-off portion 21d is provided to surround the convex portion 22c and the concave portion 22e.

3.パレット3の製造方法
次に、図10~図14を用いてパレット3の製造方法について説明する。
3. Method for manufacturing pallet 3 Next, a method for manufacturing pallet 3 will be described using FIGS. 10 to 14.

本実施形態の方法は、垂下工程、賦形工程、インサート工程、型締工程、取付工程を備える。以下、詳細に説明する。 The method of this embodiment includes a hanging process, a shaping process, an inserting process, a mold clamping process, and an attaching process. This will be explained in detail below.

3.1 垂下工程
垂下工程では、第1金型21及び第2金型22の間に樹脂シート23を垂下させる。本実施形態では、樹脂シート23は、第1樹脂シート23a及び第2樹脂シート23bである。具体的には、図10に示すように、発泡体50を、第1及び第2金型21,22間に配置する。
3.1 Hanging Process In the hanging process, the resin sheet 23 is suspended between the first mold 21 and the second mold 22. In this embodiment, the resin sheets 23 are a first resin sheet 23a and a second resin sheet 23b. Specifically, as shown in FIG. 10, the foam 50 is placed between the first and second molds 21 and 22.

そして、第1及び第2金型21,22間に、溶融状態の発泡樹脂をTダイ18のスリットから押し出して垂下させて形成した第1及び第2樹脂シート23a,23bを垂下する。本実施形態では、Tダイ18から押し出された第1及び第2樹脂シート23a,23bをそのまま使用するダイレクト真空成形が行われるので、第1及び第2樹脂シート23a,23bは、成形前に室温にまで冷却されて固化されることがなく、固化された第1及び第2樹脂シート23a,23bが成形前に加熱されることもない。ここで、図10では、垂下工程中において、第1及び第2樹脂シート23a,23bの間に発泡体50を図示しているが、垂下工程では、発泡体50を他の場所に待機させておいてもよい。 Then, first and second resin sheets 23a and 23b, which are formed by extruding molten foamed resin through the slit of the T-die 18 and letting it hang down, are suspended between the first and second molds 21 and 22. In this embodiment, direct vacuum forming is performed in which the first and second resin sheets 23a and 23b extruded from the T-die 18 are used as they are, so the first and second resin sheets 23a and 23b are placed at room temperature before molding. The solidified first and second resin sheets 23a and 23b are not cooled and solidified, and the solidified first and second resin sheets 23a and 23b are not heated before molding. Here, in FIG. 10, the foam 50 is illustrated between the first and second resin sheets 23a and 23b during the hanging process, but the foam 50 is placed on standby at another location during the hanging process. You can leave it there.

3.2 賦形工程
次に、図11に示すように、第1及び第2樹脂シート23a,23bをそれぞれ第1及び第2金型21,22の一部に当接させた後、第1及び第2金型21,22の両方によって第1及び第2樹脂シート23a,23bを減圧吸引して第1及び第2金型21,22に沿った形状に賦形する。
3.2 Shaping process Next, as shown in FIG. The first and second resin sheets 23a and 23b are vacuum-suctioned by both the second molds 21 and 22 and shaped into shapes that conform to the first and second molds 21 and 22.

3.3 インサート工程及び型締工程
次に、インサート工程において、発泡体50を第1及び第2樹脂シート23a,23bに溶着させる(不図示)。そして、図12に示すように、型締工程において、第1及び第2金型21,22を型締めする。そして、第1及び第2金型21,22から成形体を取り出し、バリ26を除去することによって、図13に示される構造体3Pが得られる。
3.3 Insert process and mold clamping process Next, in the insert process, the foam 50 is welded to the first and second resin sheets 23a and 23b (not shown). Then, as shown in FIG. 12, in the mold clamping step, the first and second molds 21 and 22 are clamped. Then, the molded bodies are taken out from the first and second molds 21 and 22, and the burrs 26 are removed, thereby obtaining the structure 3P shown in FIG. 13.

3.3 取付工程
取付工程では、滑止部材40を第1樹脂シート23a及び第2樹脂シート23bにより形成される樹脂成形体30に取り付ける。ここで、取付工程までに、樹脂成形体30に差込孔36を形成する。
3.3 Attachment Process In the attachment process, the anti-slip member 40 is attached to the resin molded body 30 formed by the first resin sheet 23a and the second resin sheet 23b. Here, the insertion hole 36 is formed in the resin molded body 30 before the attachment process.

4.滑止部材40の取り付け方法
図14を用いて、型締工程後の構造体3Pに対して滑止部材40を取り付けて、図1~図3に示されるパレット3を形成する方法について説明する。
4. Method of attaching the anti-slip member 40 A method of attaching the anti-slip member 40 to the structure 3P after the mold clamping process to form the pallet 3 shown in FIGS. 1 to 3 will be described with reference to FIG.

図14に示すように、インサート工程前の構造体3Pの下面32側に形成された樹脂壁に対し、針等を用いて空気通過孔(AH)を形成する。例えば、賦形工程の際に、針を金型から突出させておいてもよく、賦形後に針が金型から突出することで空気通過孔(AH)を形成してもよい。 As shown in FIG. 14, air passage holes (AH) are formed using a needle or the like in the resin wall formed on the lower surface 32 side of the structure 3P before the inserting process. For example, the needle may be made to protrude from the mold during the shaping process, or the air passage hole (AH) may be formed by the needle protruding from the mold after shaping.

本実施形態では、差込孔36は、型締工程と取付工程の間に、樹脂成形体30の空気通過孔(AH)の近傍に孔形成機を用いて形成される。本実施形態では、差込孔36は、空気通過孔(NG)と略同軸に孔形成機を用いて形成される。孔形成機は、例えばドリルである。本実施形態では、空気通過孔(AH)に対して孔形成器の孔形成部を略垂直に位置決めすることにより、差込孔36を正確に形成することが可能になる。また、金型による成形中に空気通過孔(AH)を形成しているため、孔形成器による孔形成加工が容易になる。これは、金型から取り出して冷えた成形品に孔を開けるよりも、成形品にすで形成された孔に対して孔形成器をあてる方が作業負荷が低減されるためである。 In this embodiment, the insertion hole 36 is formed in the vicinity of the air passage hole (AH) of the resin molded body 30 using a hole forming machine between the mold clamping process and the attachment process. In this embodiment, the insertion hole 36 is formed substantially coaxially with the air passage hole (NG) using a hole forming machine. The hole forming machine is, for example, a drill. In this embodiment, the insertion hole 36 can be formed accurately by positioning the hole forming part of the hole forming device substantially perpendicularly to the air passage hole (AH). Furthermore, since the air passage holes (AH) are formed during molding using a metal mold, the hole forming process using a hole forming machine becomes easy. This is because the workload is reduced by applying the hole former to the holes already formed in the molded product, rather than drilling holes in the molded product after it has been taken out of the mold and cooled.

そして、滑止部材40の取付方向の中心線が、空気通過孔(AH)の近傍に配置されるように滑止部材40を樹脂成形体30に取り付けることにより、図1及び図6に示されるパレット3が形成される。本実施形態では、滑止部材40に設けれた差込部46が差込孔36に差し込まれることにより、滑止部材40が樹脂成形体30に取り付けられる。このとき、滑止部材40は、樹脂成形体30の下面32から樹脂成形体30の内部に向けて取り付けられる。 Then, by attaching the non-slip member 40 to the resin molded body 30 such that the center line of the non-slip member 40 in the mounting direction is located near the air passage hole (AH), the shape shown in FIGS. 1 and 6 is obtained. A pallet 3 is formed. In this embodiment, the anti-slip member 40 is attached to the resin molded body 30 by inserting the insertion portion 46 provided on the anti-slip member 40 into the insertion hole 36. At this time, the anti-slip member 40 is attached from the lower surface 32 of the resin molded body 30 toward the inside of the resin molded body 30.

本実施形態では、図14に示される空気通過孔(AH)と略同軸に差込孔36を形成することにより、樹脂成形体30に形成された空気通過孔(AH)が差込孔36により隠蔽される。さらに、滑止部材40の差込部46を差込孔36に差し込むことにより、結果的に空気通過孔(AH)の隠蔽と滑止部材40の取り付けを1つの部材で実現することができる。これにより、滑止部材40よりパレット3移動の安定化と、空気通過孔(AH)の隠蔽を両立することが可能になる。 In this embodiment, by forming the insertion hole 36 substantially coaxially with the air passage hole (AH) shown in FIG. hidden. Furthermore, by inserting the insertion portion 46 of the anti-slip member 40 into the insertion hole 36, it is possible to conceal the air passage hole (AH) and attach the anti-slip member 40 with one member. This makes it possible to both stabilize the movement of the pallet 3 and hide the air passage holes (AH) using the anti-slip member 40.

5.その他
本発明に係るパレット3は、以下の態様でも実現可能である。
・発泡体50を用いずにパレット3を形成する。
・2枚の樹脂シート23を用いる代わりに、円筒状のパリソンを利用したブロー成形でパレット3を成形する。この場合、空気通過孔(AH)は、樹脂成形体30の内部に空気を吹き込むための空気吹込孔となる。
・樹脂シート23を加熱してから賦形する。
5. Others The pallet 3 according to the present invention can also be realized in the following aspects.
- Form the pallet 3 without using the foam 50.
- Instead of using two resin sheets 23, the pallet 3 is molded by blow molding using a cylindrical parison. In this case, the air passing hole (AH) becomes an air blowing hole for blowing air into the inside of the resin molded body 30.
- Heat the resin sheet 23 and then shape it.

次に記載の各態様で提供されてもよい。
前記パレットにおいて、発泡体を備え、前記発泡体は、前記樹脂成形体内に配置され、前記差込孔は、前記樹脂成形体の内部に残留する空気を排出する空気通過孔の径を拡張した孔である、パレット。
前記パレットにおいて、前記樹脂成形体は、前記下面側に取付凹部を備え、前記滑止部材は、前記取付凹部にその一部を挿入された状態で前記樹脂成形体に取り付けられており、前記滑止部材は、前記下面の延在方向に非平行な封止面を備え、前記封止面が前記取付凹部の内壁に当接するように構成される、パレット。
前記パレットにおいて、前記差込部は、前記封止面より前記樹脂成形体の内側に設けられる、パレット。
前記パレットにおいて、前記樹脂成形体は、肉抜き孔が設けられない状態で形成される、パレット。
前記パレットにおいて、前記下面に複数の脚部が形成され、前記複数の脚部は、第1方向及び第2方向からフォークリフトにより前記パレットを搭載可能な位置に形成されており、前記滑止部材は、前記フォークリフトによる前記パレットの搭載が前記第1方向及び前記第2方向のいずれの方向からであっても前記フォークリフトと当接する箇所に取り付けられている、パレット。
前記パレットにおいて、前記下面と、前記滑止部材の前記樹脂成形体の外側の端面までの距離をdとし、前記下面と、前記上面までの距離をDとした場合、(d/D)の値は、0.01~0.3である、パレット。
パレットの製造方法であって、垂下工程、型締工程、及び、取付工程を備え、前記垂下工程では、第1金型及び第2金型の間に樹脂シートを垂下させ、前記型締工程では、第1金型及び第2金型を型締めし、前記取付工程では、滑止部材を樹脂シートにより形成される樹脂成形体に取り付け、前記取付工程までに前記樹脂成形体に差込部を形成し、前記取付工程において、前記滑止部材に設けれた差込部が前記差込孔に差し込まれることにより、前記滑止部材が前記樹脂成形体に取り付けられ、前記滑止部材は、前記樹脂成形体の下面から前記樹脂成形体の内部に向けて取り付けられる、製造方法。
前記製造方法において、前記樹脂成形体に空気通過孔を形成し、前記差込孔は、前記空気通過孔と略同軸に孔形成機を用いて形成される、製造方法。
もちろん、この限りではない。
It may be provided in each of the following embodiments.
The pallet includes a foam body, the foam body is placed inside the resin molded body, and the insertion hole is a hole with an enlarged diameter of an air passage hole for discharging air remaining inside the resin molded body. A palette.
In the pallet, the resin molded body includes a mounting recess on the lower surface side, and the anti-slip member is attached to the resin molded body with a part thereof inserted into the mounting recess, and the non-slip member is attached to the resin molded body with a part thereof inserted into the mounting recess. The pallet is configured such that the sealing member includes a sealing surface that is non-parallel to the extending direction of the lower surface, and the sealing surface is configured to abut against an inner wall of the mounting recess.
In the pallet, the insertion portion is provided inside the resin molded body from the sealing surface.
In the pallet, the resin molded body is formed without any lightening holes.
In the pallet, a plurality of legs are formed on the lower surface, the plurality of legs are formed at a position where the pallet can be mounted by a forklift from a first direction and a second direction, and the non-slip member is The pallet is attached to a location where the forklift comes into contact with the forklift, regardless of whether the pallet is mounted by the forklift from either the first direction or the second direction.
In the pallet, when the distance between the lower surface and the outer end surface of the resin molded body of the anti-slip member is d, and the distance between the lower surface and the upper surface is D, the value of (d/D) is is a palette between 0.01 and 0.3.
A method for manufacturing a pallet, comprising a hanging process, a mold clamping process, and an attaching process, in the hanging process, a resin sheet is suspended between a first mold and a second mold, and in the mold clamping process, , the first mold and the second mold are clamped, and in the mounting step, an anti-slip member is mounted on a resin molded body formed of a resin sheet, and an insertion portion is attached to the resin molded body before the mounting step. and in the attachment step, the insertion part provided on the anti-skid member is inserted into the insertion hole, so that the anti-skid member is attached to the resin molded body, and the anti-skid member is attached to the resin molded body. A manufacturing method in which the resin molded body is attached from the lower surface toward the inside of the resin molded body.
In the manufacturing method, an air passage hole is formed in the resin molded body, and the insertion hole is formed approximately coaxially with the air passage hole using a hole forming machine.
Of course, this is not the case.

1 :成形機
2 :樹脂供給装置
3 :パレット
3P :構造体
11 :原料樹脂
11a :溶融樹脂
12 :ホッパー
13 :押出機
13a :シリンダ
17 :アキュームレータ
17a :シリンダ
17b :ピストン
18 :Tダイ
19a :連結管
19b :連結管
21 :第1金型
21c :凹部
21d :ピンチオフ部
22 :第2金型
22b :キャビティ
22c :凸部
22e :凹部
23 :樹脂シート
23a :第1樹脂シート
23b :第2樹脂シート
26 :バリ
30 :樹脂成形体
31 :上面
32 :下面
32b :凹部
33 :脚部
34 :取付凹部
35 :側壁
36 :差込孔
37a :角部
37b :角部
40 :滑止部材
41 :接触面
42 :連結面
43 :封止面
44 :基面
45 :軸
46 :差込部
50 :発泡体
AH :空気通過孔
D :距離
S :空間
X :領域
1: Molding machine 2: Resin supply device 3: Pallet 3P: Structure 11: Raw resin 11a: Molten resin 12: Hopper 13: Extruder 13a: Cylinder 17: Accumulator 17a: Cylinder 17b: Piston 18: T-die 19a: Connection Pipe 19b: Connecting pipe 21: First mold 21c: Recess 21d: Pinch-off portion 22: Second mold 22b: Cavity 22c: Convex portion 22e: Recess 23: Resin sheet 23a: First resin sheet 23b: Second resin sheet 26: Burr 30: Resin molded body 31: Top surface 32: Bottom surface 32b: Recess 33: Leg 34: Mounting recess 35: Side wall 36: Insertion hole 37a: Corner 37b: Corner 40: Anti-slip member 41: Contact surface 42: Connection surface 43: Sealing surface 44: Base surface 45: Shaft 46: Insertion part 50: Foam AH: Air passage hole D: Distance S: Space X: Area

Claims (7)

パレットであって、
中空の樹脂成形体、及び、滑止部材を備え、
前記樹脂成形体は、差込孔を備え、
前記滑止部材は、差込部を備え、
前記差込部が前記差込孔に差し込まれた状態で、前記滑止部材が前記樹脂成形体に取り付けられており、
前記滑止部材は、前記樹脂成形体の下面から前記樹脂成形体の内部に向けて取り付けられており、
前記パレットは、発泡体をさらに備え、
前記発泡体は、前記樹脂成形体内に配置され、
前記差込孔は、前記樹脂成形体に形成された空気通過孔の径を拡張した孔である、
パレット。
A palette,
Equipped with a hollow resin molded body and a non-slip member,
The resin molded body includes an insertion hole,
The anti-slip member includes an insertion portion,
The anti-slip member is attached to the resin molded body in a state where the insertion part is inserted into the insertion hole,
The anti-slip member is attached from the lower surface of the resin molded body toward the inside of the resin molded body,
The pallet further includes a foam,
the foam is placed within the resin molded body,
The insertion hole is a hole with an expanded diameter of an air passage hole formed in the resin molded body,
palette.
請求項1に記載のパレットにおいて、
前記樹脂成形体は、前記下面側に取付凹部を備え、
前記滑止部材は、前記取付凹部にその一部を挿入された状態で前記樹脂成形体に取り付けられており、
前記滑止部材は、前記下面の延在方向に非平行な封止面を備え、
前記封止面が前記取付凹部の内壁に当接するように構成される、
パレット。
The pallet according to claim 1,
The resin molded body includes a mounting recess on the lower surface side,
The anti-slip member is attached to the resin molded body with a part thereof inserted into the attachment recess,
The anti-slip member includes a sealing surface that is non-parallel to the extending direction of the lower surface,
the sealing surface is configured to abut against an inner wall of the mounting recess;
palette.
請求項2に記載のパレットにおいて、
前記差込部は、前記封止面より前記樹脂成形体の内側に設けられる、
パレット。
The pallet according to claim 2,
The insertion portion is provided inside the resin molded body from the sealing surface,
palette.
請求項1~請求項3の何れか1つに記載のパレットにおいて、
前記樹脂成形体は、肉抜き孔が設けられない状態で形成される、
パレット。
The pallet according to any one of claims 1 to 3,
The resin molded body is formed without a lightening hole,
palette.
請求項1~請求項4の何れか1つに記載のパレットにおいて、
前記下面に複数の脚部が形成され、
前記複数の脚部は、第1方向及び第2方向からフォークリフトにより前記パレットを搭載可能な位置に形成されており、
前記滑止部材は、前記フォークリフトによる前記パレットの搭載が前記第1方向及び前記第2方向のいずれの方向からであっても前記フォークリフトと当接する箇所に取り付けられている、
パレット。
The pallet according to any one of claims 1 to 4,
a plurality of legs are formed on the lower surface;
The plurality of legs are formed at a position where the pallet can be mounted by a forklift from a first direction and a second direction,
The anti-slip member is attached to a location where the pallet comes into contact with the forklift, regardless of whether the pallet is mounted by the forklift from either the first direction or the second direction.
palette.
請求項1~請求項5の何れか1つに記載のパレットにおいて、
前記下面と、前記滑止部材の前記樹脂成形体の外側の端面までの距離をdとし、
前記下面と、前記樹脂成形体の上面までの距離をDとした場合、
(d/D)の値は、0.01~0.3である、
パレット。
The pallet according to any one of claims 1 to 5,
The distance between the lower surface and the outer end surface of the resin molded body of the anti-slip member is d,
When the distance between the lower surface and the upper surface of the resin molded body is D,
The value of (d/D) is 0.01 to 0.3,
palette.
パレットの製造方法であって、
垂下工程、型締工程、及び、取付工程を備え、
前記垂下工程では、第1金型及び第2金型の間に樹脂シートを垂下させ、
前記型締工程では、第1金型及び第2金型を型締めし、
前記取付工程では、滑止部材を樹脂シートにより形成される樹脂成形体に取り付け、
前記取付工程までに前記樹脂成形体に差込孔を形成し、
前記取付工程において、前記滑止部材に設けれた差込部が前記差込孔に差し込まれることにより、前記滑止部材が前記樹脂成形体に取り付けられ、
前記滑止部材は、前記樹脂成形体の下面から前記樹脂成形体の内部に向けて取り付けられ、
前記樹脂成形体に空気通過孔を形成し、
前記差込孔は、前記空気通過孔と略同軸に孔形成機を用いて形成される、
製造方法。
A method for manufacturing a pallet, the method comprising:
Equipped with a hanging process, a mold clamping process, and an installation process,
In the hanging step, a resin sheet is hung between the first mold and the second mold,
In the mold clamping step, the first mold and the second mold are clamped,
In the attachment step, the anti-slip member is attached to a resin molded body formed of a resin sheet,
An insertion hole is formed in the resin molded body before the attachment step,
In the attachment step, the anti-skid member is attached to the resin molded body by inserting an insertion part provided on the anti-skid member into the insertion hole,
The anti-slip member is attached from the lower surface of the resin molded body toward the inside of the resin molded body,
forming air passage holes in the resin molded body,
The insertion hole is formed approximately coaxially with the air passage hole using a hole forming machine.
Production method.
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