JP2007186244A - Synthetic resin pallet - Google Patents

Synthetic resin pallet Download PDF

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JP2007186244A
JP2007186244A JP2006006584A JP2006006584A JP2007186244A JP 2007186244 A JP2007186244 A JP 2007186244A JP 2006006584 A JP2006006584 A JP 2006006584A JP 2006006584 A JP2006006584 A JP 2006006584A JP 2007186244 A JP2007186244 A JP 2007186244A
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bending strength
pallet
molding material
molding
girder
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JP4908850B2 (en
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Atsushi Kojima
篤史 小島
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Gifu Plastic Industry Co Ltd
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Gifu Plastic Industry Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide an inexpensive synthetic resin pallet which is provided with a satisfactory bending strength and a forming characteristic and which is not easily damaged by the tip end, etc. of a fork hitting its outermost peripheral edge or by a shock applied thereto when it falls down. <P>SOLUTION: This synthetic resin pallet 4 is provided with a deck part 1 for placing an item to be placed thereon and a plurality of beams 2. The area between the beams 2 where a fork is inserted is a fork insertion part 3. A bending reinforcement part 5 made of a forming material having a bending strength larger than that of the forming material forming the other area is provided at a part connecting the beams 2 of the pallet 4. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は、曲げ強度の強い合成樹脂製パレットに関するものである。   The present invention relates to a synthetic resin pallet having high bending strength.

従来から合成樹脂製のパレットにおいて、パレット下部を強化するものが特許文献１により知られている。   Conventionally, a pallet made of synthetic resin that reinforces the lower part of the pallet is known from Patent Document 1.

この特許文献１に示される従来例は、合成樹脂製のパレットの下部の全面部にタルクを添加することで補強するようにしている。しかしながら、この従来例においては、パレットにおいて、最も強度（曲げ強度）が必要な部分のみを補強するものではなく、下部全面を補強するものであるから、不必要な箇所も補強することになって、コストが高くなり、また、タルクを添加した成形材料は流れが悪いため、この流れの悪い成形材料で下部全面を成形する従来例は成形性が悪くなると共に重くなるという問題がある。   The conventional example shown in Patent Document 1 is reinforced by adding talc to the entire lower surface of a synthetic resin pallet. However, in this conventional example, the pallet does not reinforce only the portion that requires the most strength (bending strength), but reinforces the entire lower portion, so that unnecessary portions are also reinforced. The cost increases, and the molding material to which talc is added has a poor flow. Therefore, the conventional example in which the entire lower surface is molded with the molding material having the poor flow has a problem that the moldability deteriorates and becomes heavy.

また、上記特許文献１に示された従来例にあっては、下部の全面部にタルクを添加した成形材料で成形しているため、下部の最外周端もタルクを添加した成形材料で成形してある。ところで、タルクを添加した成形材料で成形した部位は曲げ強度は強いが耐衝撃性が劣り、このため、フォークの先端などが最外周端に衝突したり、パレットが落下した場合に最外周端に衝撃が加わると最外周端が破損し易いという問題がある。また、タルクを添加した成形材料で成形した部位は、もろくなり、自動倉庫のチェーンコンベア等の搬送装置でパレットを搬送すると、パレットが削れて塵の発生に繋がる。
特開平１１−２６８７４０号公報 Further, in the conventional example shown in the above-mentioned Patent Document 1, since the molding is performed with the molding material with talc added to the entire lower surface portion, the outermost peripheral edge of the lower part is also molded with the molding material with talc added. It is. By the way, the part molded with a molding material added with talc has high bending strength but poor impact resistance.For this reason, if the tip of the fork collides with the outermost peripheral edge or the pallet falls, When an impact is applied, there is a problem that the outermost peripheral end is easily damaged. Moreover, the site | part shape | molded with the molding material which added talc becomes fragile, and if a pallet is conveyed with conveying apparatuses, such as a chain conveyor of an automatic warehouse, a pallet will be shaved and it will lead to generation | occurrence | production of dust.
JP-A-11-268740

本発明は上記の従来の問題点に鑑みて発明したものであって、低コストで曲げ強度が強く、成形性も優れ、更に、最外周端にフォークの先端等が衝突したり、落下して衝撃が加わっても破損し難く、チェーンコンベア等で削れ難い合成樹脂製パレットを提供することを課題とするものである。   The present invention was invented in view of the above-mentioned conventional problems, and was low in cost, strong in bending strength, excellent in formability, and further, the tip of the fork collided with the outermost peripheral end or dropped. It is an object of the present invention to provide a synthetic resin pallet which is not easily damaged even when an impact is applied and which is difficult to be cut by a chain conveyor or the like.

上記課題を解決するために本発明に係る合成樹脂製パレットは、載置物を載置するためのデッキ部１と、複数の桁部２とを備え、桁部２間がフォーク挿入部３となった合成樹脂製のパレット４において、該パレット４の桁部２間を繋ぐ部位に、他の部位を成形する成形材料よりも曲げ強度の強い成形材料で成形した曲げ強度補強部５を設けて成ることを特徴とするものである。   In order to solve the above-mentioned problems, a synthetic resin pallet according to the present invention includes a deck portion 1 for placing an object to be placed thereon and a plurality of beam portions 2, and a space between the beam portions 2 serves as a fork insertion portion 3. In the pallet 4 made of synthetic resin, a bending strength reinforcing portion 5 formed by a molding material having a bending strength stronger than that of the molding material for molding the other portion is provided at a portion connecting the beam portions 2 of the pallet 4. It is characterized by this.

このようにパレット４において最も強い曲げ強度が求められる部位である桁部２間を繋ぐ部位に、他の部位を成形する成形材料よりも曲げ強度の強い成形材料で成形した曲げ強度補強部５を設けることで、例えば、自動倉庫のチェーンコンベアやローラコンベア等の搬送装置上にパレット４を載せて、左右の二箇所で支持する際に曲げ強度補強部５により効果的に補強ができるものであり、また、全面を曲げ強度の強い成形材料で成形するのではなく、桁部２間を繋ぐ部位を曲げ強度の強い成形材料を用いて成形するので、高価な曲げ強度の強い成形材料の使用量が少なくてコストを低減できると共に、曲げ強度の強い成形材料は流動性が悪いが使用量が少ないので、成形性が悪くなるのを抑制できる。   In this way, the bending strength reinforcing portion 5 formed of a molding material having a bending strength stronger than that of the molding material for molding the other portion is connected to the portion connecting the beam portions 2 which are the portions where the strongest bending strength is required in the pallet 4. By providing, for example, when the pallet 4 is placed on a conveying device such as a chain conveyor or a roller conveyor in an automatic warehouse and supported at two left and right locations, the bending strength reinforcing portion 5 can effectively reinforce. In addition, the entire surface is not molded with a molding material having a high bending strength, but the portion connecting the beams 2 is molded using a molding material with a high bending strength. However, the molding material with high bending strength is poor in fluidity but has a small amount of use, so that deterioration in moldability can be suppressed.

また、桁部２を繋ぐ部位を成形するための成形材料中に補強材が添加してあることが好ましい。   Moreover, it is preferable that the reinforcing material is added in the molding material for molding the site | part which connects the girder part 2. FIG.

このような構成とすることで、タルクのような補強材を添加するという簡単な構成で、パレット４の桁部２間を繋ぐ部位に、他の部位を成形する成形材料よりも曲げ強度の強い成形材料で成形した曲げ強度補強部５を設けることができる。   By having such a configuration, the bending strength is stronger than the molding material for molding the other part at the part connecting the beam portions 2 of the pallet 4 with a simple structure of adding a reinforcing material such as talc. The bending strength reinforcement part 5 shape | molded with the molding material can be provided.

また、桁部２間を繋ぐ曲げ強度補強部５は、桁部２の一部を含ませて一体に成形してあることが好ましい。   Moreover, it is preferable that the bending strength reinforcement part 5 which connects between the girder parts 2 includes a part of the girder part 2 and is integrally formed.

このように、桁部２間を繋ぐ曲げ強度補強部５は、桁部２の一部を含ませて一体に成形してあるので、高価な曲げ強度の強い成形材料の使用量をできるだけ少なくしながら桁部２間を繋ぐ部位をより曲げ強度の強い部位とすることができる。また、パレット４表面から荷重が掛かっても、桁部２の外側（フォーク挿入部３側）が基点になって曲って破損することがない。   In this way, the bending strength reinforcing portion 5 that connects between the spar portions 2 is formed integrally with a part of the spar portion 2, so that the amount of expensive molding material having high bending strength is minimized. However, the site | part which connects between the beam parts 2 can be made into a site | part with stronger bending strength. Further, even if a load is applied from the surface of the pallet 4, the outer side of the beam part 2 (fork insertion part 3 side) becomes a base point and is not bent and damaged.

また、曲げ強度の強い成形材料で成形した曲げ強度補強部５の端部がパレット４の最外周端よりパレット４の内側方向に引き込んだ位置であることが好ましい。   Moreover, it is preferable that the end of the bending strength reinforcing portion 5 formed of a molding material having a high bending strength is a position where the end of the pallet 4 is drawn inward from the outermost peripheral end of the pallet 4.

桁部２を繋ぐ部位に曲げ強度の強い成形材料で成形した曲げ強度補強部５を設けるといえども、上記のように、パレット４の最外周端が耐衝撃性の劣る曲げ強度の強い材料で成形してないので、フォークの先端などが最外周端に衝突したり、パレットが落下して最外周端に衝撃が加わっても最外周端が破損し難いものである。また、パレット４の一部を持ち上げてパレット４を引きずりながら移動しても、削れて塵が発生し難いものである。つまり、自動倉庫で利用の際の曲げ強度が強く、しかも、最外周端に衝撃が作用しても破損し難く削れ難いパレット４を提供できる。   Even if the bending strength reinforcing portion 5 formed of a molding material having a high bending strength is provided at a portion connecting the girder portions 2, the outermost peripheral end of the pallet 4 is made of a material having a high bending strength with poor impact resistance as described above. Since it is not molded, even if the tip of the fork collides with the outermost peripheral end or the pallet falls and an impact is applied to the outermost peripheral end, the outermost peripheral end is hardly damaged. Further, even if a part of the pallet 4 is lifted and moved while dragging the pallet 4, it is difficult to be scraped off and generate dust. In other words, it is possible to provide the pallet 4 that has a high bending strength when used in an automatic warehouse and is not easily damaged even when an impact is applied to the outermost peripheral end.

本発明は、高価な曲げ強度の強い成形材料の使用量を少なくして、自動倉庫で支持する際に強い曲げ強度を効果的に発揮することができ、また、高価な曲げ強度の強い成形材料の使用量が少なくてコストを低減できると共に、曲げ強度の強い成形材料は流動性が悪いが使用量が少ないので、成形性が悪くならない。   The present invention reduces the amount of expensive molding material having high bending strength, can effectively exert strong bending strength when supported in an automatic warehouse, and is expensive and has high bending strength. The molding material having a high bending strength has poor flowability but the molding amount does not deteriorate because the usage amount is small.

以下、本発明を添付図面に示す実施形態に基いて説明する。   Hereinafter, the present invention will be described based on embodiments shown in the accompanying drawings.

合成樹脂製のパレット４は載置物を載置するためのデッキ部１と、複数の桁部２とを備えたもので、桁部２間がフォーク挿入部３となっている。   The pallet 4 made of synthetic resin is provided with a deck portion 1 for placing a placement object and a plurality of girders 2, and a fork insertion portion 3 is formed between the girders 2.

ここで、合成樹脂製のパレット４としては、全体を合成樹脂の一体成形により成形する一体成形型のパレット４と、上半体４ａと、下半体４ｂとを別々に成形して上半体４ａと下半体４ｂとを溶着一体化して成形する溶着タイプのパレット４とに大別でき、更に、一体成形型のパレット４、溶着タイプのパレット４のいずれのタイプも、上面部のみが載置物を載置するためのデッキ部となり、下面部に開口部を形成した片面使用タイプと、上面部及び下面部がいずれもデッキ部となり、上下反転することで、いずれも面もデッキ部として使用できる両面使用タイプのものとがある。   Here, as the pallet 4 made of synthetic resin, the upper half body is formed by separately molding the integrally molded pallet 4 which is molded by synthetic resin integral molding, the upper half body 4a and the lower half body 4b separately. 4a and the lower half 4b can be roughly divided into a welding type pallet 4 which is formed by welding and integration. Further, only the upper surface portion of each of the integrally-molding pallet 4 and the welding type pallet 4 is mounted. It becomes a deck part for placing figurines, a single-sided use type in which an opening is formed on the lower surface part, and both the upper surface part and the lower surface part become deck parts, and both surfaces are used as deck parts by flipping up and down Some types can be used on both sides.

そして、本発明においては、パレット４の桁部２間を繋ぐ部位に、他の部位を成形する成形材料よりも曲げ強度の強い成形材料で成形した曲げ強度補強部５を設けたことに特徴があり、パレット４のタイプとしては上記のいずれのタイプのパレット４であってもかまわない。また、パレット４の桁部２間を繋ぐ部位に設ける曲げ強度補強部５は、パレット４の上面側のみに設けても、下面側のみに設けても、また、上面側と下面側の両方に設けてもよい。   In the present invention, a feature is provided in that a bending strength reinforcing portion 5 formed of a molding material having a higher bending strength than a molding material for molding the other portion is provided at a portion connecting between the beam portions 2 of the pallet 4. Yes, the pallet 4 may be any type of pallet 4 described above. Moreover, the bending strength reinforcement part 5 provided in the site | part which connects between the girder parts 2 of the pallet 4 may be provided only on the upper surface side of the pallet 4, only on the lower surface side, or on both the upper surface side and the lower surface side. It may be provided.

以下添付図面に示す実施形態では、溶着タイプのパレット４で両面使用タイプの例（つまり上下両面がデッキ部１となっている例）を示して説明する。   Hereinafter, in the embodiment shown in the accompanying drawings, an example of a double-sided use type (that is, an example in which the upper and lower sides are the deck portion 1) is shown and described in the welding type pallet 4.

図１、図２に示すように、合成樹脂により一体成形した上半体４ａは、上面がデッキ部１（１ａ）となり、デッキ部１ａの下面に複数の筒状をした上桁部２ａを一体に垂設して構成してあり、合成樹脂により一体成形した下半体４ｂは、下面がデッキ部１（１ｂ）となり、デッキ部１ｂの上面に複数の筒状をした下桁部２ｂを上方に向けて一体に突設して構成してあり、上記の上半体４ａの上桁部２ａの下端面部と下半体４ｂの下桁部２ｂの上端面部とを熱溶着して上桁部２ａと下桁部２ｂとで桁部２を一体化することでパレット４を構成してある。   As shown in FIG. 1 and FIG. 2, the upper half 4a integrally formed of synthetic resin has a deck portion 1 (1a) on the upper surface, and a plurality of cylindrical upper beams 2a are integrally formed on the lower surface of the deck portion 1a. The lower half 4b formed integrally with the synthetic resin and integrally formed with a synthetic resin has a lower surface serving as a deck portion 1 (1b), and a plurality of cylindrical lower girders 2b formed on the upper surface of the deck portion 1b. The upper girder part is formed by projecting integrally toward the upper part of the upper half 4a by thermally welding the lower end part of the upper girder part 2a of the upper half part 4a and the upper end part of the lower girder part 2b of the lower half part 4b. The pallet 4 is constituted by integrating the girder part 2 with 2a and the lower girder part 2b.

上記上半体４ａと下半体４ｂとは同じ形状をしていて同じ成形金型により成形したものであってもよく、あるいは、異なる形状をしていて異なる成形金型により成形したものであってもよい。   The upper half 4a and the lower half 4b may have the same shape and are molded with the same molding die, or have different shapes and are molded with different molding dies. May be.

なお、以下の説明では特別区別する必要がある場合を除き、デッキ部１ａ、デッキ部１ｂはいずれも単にデッキ部１と表現し、上桁部２ａ、下桁部２ｂはいずれも単に桁部２として表現して説明する。   In the following description, the deck portion 1a and the deck portion 1b are both simply expressed as the deck portion 1, and the upper girder portion 2a and the lower girder portion 2b are both simply the girder portion 2 unless special distinction is necessary. It expresses and explains as.

添付図面に示す実施形態ではパレット４の上面部と下面部とにおける桁部２を繋ぐ部位に曲げ強度補強部５を設けた例が示してある。   In the embodiment shown in the accompanying drawings, an example is shown in which a bending strength reinforcing portion 5 is provided at a portion connecting the girder portion 2 in the upper surface portion and the lower surface portion of the pallet 4.

桁部２間を繋ぐ部位にはデッキ部１の裏面側（デッキ部１ａの下面側、デッキ部１ｂの上面側）に複数の補強リブ６が設けてあり、図１乃至図５に示す実施形態では、この桁部２間を繋ぐ部位において、補強リブ６の一部とデッキ部１の一部が、他の部位を成形する成形材料よりも曲げ強度の強い成形材料で成形した曲げ強度補強部５となっている。作図上曲げ強度の強い材料で成形した曲げ強度補強部５を多数のドットを施して描いている。   A plurality of reinforcing ribs 6 are provided on the back surface side of the deck portion 1 (the lower surface side of the deck portion 1a and the upper surface side of the deck portion 1b) at the portion connecting the beam portions 2, and the embodiment shown in FIGS. Then, in the part which connects between these girder parts 2, a part of the reinforcing rib 6 and a part of the deck part 1 are formed with a bending strength reinforcing part formed of a molding material whose bending strength is stronger than the molding material for molding the other part. 5 In the drawing, the bending strength reinforcing portion 5 formed of a material having high bending strength is drawn with a large number of dots.

パレット４の上記曲げ強度補強部５以外の部位は、例えば、通常のポリプロピレンにより成形し、曲げ強度補強部５は上記通常のポリプロピレンよりも曲げ強度が強い物性のポリプロピレンや、あるいは、通常のポリプロピレンにタルクを添加した成形材料を使用して成形してある。パレット４の曲げ強度補強部５を成形するための曲げ強度の強い成形材料はバージン材を用いるが、曲げ強度補強部５を成形する部分以外の部位を成形するための成形材料はバージン、再生材のいずれであってもよい。   Parts other than the bending strength reinforcing portion 5 of the pallet 4 are formed of, for example, ordinary polypropylene, and the bending strength reinforcing portion 5 is made of polypropylene having physical properties that have higher bending strength than the normal polypropylene or normal polypropylene. It is molded using a molding material to which talc is added. A virgin material is used as a molding material having a high bending strength for molding the bending strength reinforcing portion 5 of the pallet 4, but a molding material for molding a portion other than a portion where the bending strength reinforcing portion 5 is molded is a virgin or recycled material. Any of these may be used.

ところで、曲げ強度の強い成形材料はタルクを添加したりして高価で流動性が悪いが、上記のように、桁部２間を繋ぐ部位にのみ少量使用するだけであるから、コストが高くなるのを抑え、且つ、成形性の低下も防止できる。なお、タルクを添加することによって重量が増すものの、少量使用するに過ぎないので、それほど重くならない。また、パレット４の桁部２間を繋ぐ部位に、他の部位を成形する成形材料よりも曲げ強度の強い成形材料で成形した曲げ強度補強部５を設けることで、自動倉庫においてパレット４を取り扱う際に、最も曲げ強度を必要とする箇所は、桁部２間を繋ぐ部位であるため、この部分を重点的に補強することで、全体として曲げ強度の強い成形材料の使用料を少なくして高い曲げ強度を有するパレット４を提供できることになる。   By the way, a molding material with high bending strength is expensive and poor in fluidity due to the addition of talc. However, as described above, only a small amount is used for the portion connecting between the spar portions 2, so that the cost increases. Can be suppressed, and deterioration of moldability can also be prevented. In addition, although the weight increases by adding talc, it is not so heavy because it is only used in a small amount. Further, the pallet 4 is handled in an automatic warehouse by providing a bending strength reinforcing portion 5 formed of a molding material having a higher bending strength than a molding material for molding other portions at a portion connecting the beam portions 2 of the pallet 4. At that time, the place that needs the most bending strength is the part that connects between the girder parts 2, so by reinforcing this part intensively, the usage fee of the molding material with high bending strength as a whole can be reduced. The pallet 4 having high bending strength can be provided.

図１乃至図５、図６乃至図１６には桁部２と桁部２との間を繋ぐ部位に、曲げ強度補強部５を設ける位置の各例を示してある。   FIGS. 1 to 5 and FIGS. 6 to 16 show examples of positions where the bending strength reinforcing portion 5 is provided at a portion connecting the beam portion 2 and the beam portion 2.

図１乃至図５には、４方差しのパレット４において、図２、図４の縦方向、横方向に隣合う桁部２と桁部２とを繋ぐ部分をそれぞれ他の部位を成形する成形材料よりも曲げ強度の強い成形材料で成形して曲げ強度補強部５を設けた例が示してある。   1 to 5, in the four-way pallet 4, moldings for forming other portions of the portions connecting the spar 2 and the spar 2 adjacent to each other in the vertical and horizontal directions in FIGS. 2 and 4 are performed. An example in which a bending strength reinforcing portion 5 is formed by molding with a molding material having a bending strength stronger than that of the material is shown.

また、図６には、４方差しのパレット４において、図６の縦方向、横方向に隣合う桁部２と桁部２とを繋ぐ部分をそれぞれ他の部位を成形する成形材料よりも曲げ強度の強い成形材料で成形した曲げ強度補強部５とすることに加え、外周に位置するすべての桁部２を繋ぐ部分と外周に位置する桁部２の一部が連続するように曲げ強度補強部５の一部がロ字状部となっている例が示してある。この実施形態では外周部にロ字状部が形成してあるため、全体としての曲げ強度がより強固となる。   Further, in FIG. 6, in the four-way pallet 4, the portions connecting the spar 2 and the spar 2 adjacent to each other in the vertical direction and the horizontal direction in FIG. In addition to the bending strength reinforcement portion 5 formed of a strong molding material, the bending strength reinforcement is made so that a portion connecting all the girder portions 2 located on the outer periphery and a part of the girder portion 2 located on the outer periphery are continuous. An example in which a part of the part 5 is a square-shaped part is shown. In this embodiment, since the square-shaped part is formed in the outer peripheral part, the bending strength as a whole becomes stronger.

また、図７には４方差しのパレット４において、縦方向、横方向にそれぞれ隣合う桁部２と桁部２を繋ぐ部位にそれぞれ複数本の曲げ強度補強部５を設けた例が示してある。   Further, FIG. 7 shows an example in which a plurality of bending strength reinforcing portions 5 are provided at portions connecting the spar 2 and the spar 2 adjacent to each other in the longitudinal direction and the lateral direction in the four-way pallet 4. is there.

また、図８には４方差しのパレット４において、縦方向、横方向にそれぞれ隣合う桁部２と桁部２を繋ぐ部位にそれぞれ曲げ強度補強部５を設けるに当たって、曲げ強度補強部５の端部が桁部２からやや離れた位置にある例が示してある。   Further, in FIG. 8, in the four-way pallet 4, when the bending strength reinforcing portions 5 are provided at the portions connecting the girder portions 2 and 2 that are adjacent to each other in the vertical direction and the horizontal direction, An example in which the end portion is located slightly away from the beam portion 2 is shown.

また、図９には４方差しのパレット４において、縦方向、横方向にそれぞれ隣合う桁部２と桁部２を繋ぐ部位にそれぞれ複数本の曲げ強度補強部５を設けると共に、更に、パレット４の上面部と下面部とに設けた曲げ強度補強部５の位置が上面部と下面部とで平面視においてずれている例であり、図９の実施形態では上面部に設けた曲げ強度補強部５Ａと下面部に設けた曲げ曲げ強度補強部５Ｂとが内外方向にずれている例が示してある。   Further, in FIG. 9, in the four-way pallet 4, a plurality of bending strength reinforcing portions 5 are provided at portions connecting the spar 2 adjacent to each other in the longitudinal direction and the lateral direction, respectively, and further, the pallet 4 is an example in which the positions of the bending strength reinforcing portions 5 provided on the upper surface portion and the lower surface portion are shifted in plan view between the upper surface portion and the lower surface portion. In the embodiment of FIG. An example in which the portion 5A and the bending bending strength reinforcing portion 5B provided on the lower surface portion are displaced in the inner and outer directions is shown.

上記の各例は４方差しパレット４において、縦方向、横方向にそれぞれ隣合う桁部２と桁部２を繋ぐ縦方向、横方向の繋ぎ部位のすべてに曲げ強度補強部５を設けた例を示したが、図１０、図１１のように４方差しパレット４において、外周に位置する隣接する桁部２同士を繋ぐ部位に曲げ強度補強部５で設けても良い。ここで、図１０は外周に位置する隣接する桁部２と桁部２との間の部位のみに設けたものを示し、図１１は外周に位置するすべての桁部２を繋ぐ部分と外周に位置する桁部２の一部が連続するように曲げ強度補強部５がロ字状部となっている例が示してある。   In each of the above examples, in the four-way pallet 4, the bending strength reinforcing portions 5 are provided in all of the connecting portions in the vertical direction and the horizontal direction connecting the girder portions 2 adjacent to each other in the vertical direction and the horizontal direction, respectively. However, in the four-way pallet 4 as shown in FIG. 10 and FIG. 11, the bending strength reinforcing portion 5 may be provided at a portion connecting adjacent girder portions 2 located on the outer periphery. Here, FIG. 10 shows what was provided only in the site | part between the adjacent girder part 2 and the girder part 2 located in an outer periphery, FIG. 11 shows the part and the outer periphery which connect all the girder parts 2 located in an outer periphery. An example is shown in which the bending strength reinforcing portion 5 is a square-shaped portion so that a part of the positioned girder portion 2 is continuous.

また、図１２には４方差しパレット４において、四隅の桁部２と中央の桁部２とをそれぞれ繋ぐ部位に曲げ強度補強部５を設けた例を示している。   FIG. 12 shows an example in which a bending strength reinforcing portion 5 is provided in each of the four-way pallet 4 where the four-corner girder 2 and the central girder 2 are connected to each other.

また、図１３には４方差しパレット４において、左右における縦方向の中間の桁部２と中央の桁部２を繋ぐ部位、及び、前後における横方向の中間の桁部２と中央の桁部２を繋ぐ部位にそれぞれ曲げ強度補強部５を設けた例が示してある。   Further, in FIG. 13, in the four-way pallet 4, the part connecting the vertical middle girder part 2 and the central girder part 2 in the left and right, and the middle middle girder part 2 and the middle girder part in the front and rear direction. The example which provided the bending strength reinforcement part 5 in the site | part which connects 2 is shown.

また、図１４には４方差しパレット４において、左右における縦方向の中間の桁部２と中央の桁部２を繋ぐ部位、及び、前後における横方向の中間の桁部２と中央の桁部２を繋ぐ部位にそれぞれ曲げ強度補強部５を設けると共に、中央の桁部２部分にも上記曲げ強度補強部５と連続するように曲げ強度補強部５を一体に設けた例が示してある。   Further, in FIG. 14, in the four-way pallet 4, a part connecting the vertical intermediate girder part 2 and the central girder part 2 in the left and right, and the horizontal intermediate girder part 2 and the central girder part in the front and rear direction. 2 shows an example in which a bending strength reinforcing portion 5 is provided at each of the two connecting portions 2 and a bending strength reinforcing portion 5 is integrally provided so as to be continuous with the bending strength reinforcing portion 5 at the central girder portion 2.

また、図１５には２方差しパレット４において、桁部２間を繋ぐ部位のほぼ全領域に巾広の曲げ強度補強部５を設けた例である。   FIG. 15 shows an example in which a wide bending strength reinforcing portion 5 is provided in almost the entire region of the portion connecting the beam portions 2 in the two-way pallet 4.

また、図１６には２方差しパレット４において、桁部２間を繋ぐ部位の一部に複数の曲げ強度補強部５を設けた例である。   FIG. 16 shows an example in which a plurality of bending strength reinforcing portions 5 are provided in a part of a portion connecting the beam portions 2 in the two-way pallet 4.

また、他の成形材料と曲げ強度補強部５の境界線を、直線の組み合わせの凹凸や曲線の組み合わせの波状や直線と曲線の組み合わせとしてもよい。   Further, the boundary line between the other molding material and the bending strength reinforcing portion 5 may be a wavy shape of a combination of straight lines or a combination of curves, or a combination of straight lines and curves.

更に、金型の形状に左右されず、曲げ強度の強い成形材料を垂れ流すようにして成形することも可能である。   Furthermore, it is also possible to mold by casting a molding material having high bending strength regardless of the shape of the mold.

上記図１乃至図１６の各実施形態に示すように、曲げ強度の強い成形材料で成形した曲げ強度補強部５の端部はいずれも、パレット４の最外周端よりパレット４の内側方向に引き込んだ位置となっており、パレット４の最外周端は曲げ強度の強い成形材料では成形してなく、他の成形材料（曲げ強度補強部５以外の部位を成形する通常のパレット成形材料）により成形してある。つまり、本発明において最外周端に曲げ強度の強い成形材料を用いて桁間の曲げ強度を向上させることもできるが、曲げ強度の強い材料は曲げ強度は強いが耐衝撃性に劣るため、曲げ強度補強部５の端部がパレット４の最外周端まで至っていると、パレット４の最外周端にフォークの先端が衝突したり、パレット４が落下してパレット４の最外周端に衝撃が加わったりした場合、曲げ強度補強部５の端部がパレット４の最外周端まで至った部分が破損し易いという問題がある。よって、上記のように、パレット４の最外周端は曲げ強度の強い成形材料では成形してなく、曲げ強度補強部５以外の部位を成形する成形材料で成形することで、曲げ強度が向上したパレット４であると共に、耐衝撃の低下を防止できて、衝撃により破損し難いパレット４を提供できることになる。また、パレット４のフォーク挿入部３の湾曲部も、曲げ強度の強い成形材料では成形してなく、他の成形材料により成形することによって、フォークの先端が衝突しても破損し難いものである。   As shown in each of the embodiments in FIGS. 1 to 16, the end portions of the bending strength reinforcing portion 5 formed of a molding material having high bending strength are all drawn inward from the outermost peripheral end of the pallet 4 toward the inner side of the pallet 4. The outermost peripheral edge of the pallet 4 is not molded with a molding material with high bending strength, but is molded with another molding material (a normal pallet molding material that molds a part other than the bending strength reinforcing portion 5). It is. That is, in the present invention, it is possible to improve the bending strength between girders by using a molding material having a high bending strength at the outermost peripheral end, but a material having a high bending strength has a high bending strength but is inferior in impact resistance. When the end of the strength reinforcing portion 5 reaches the outermost peripheral end of the pallet 4, the tip of the fork collides with the outermost peripheral end of the pallet 4 or the pallet 4 falls and an impact is applied to the outermost peripheral end of the pallet 4. In such a case, there is a problem that the portion where the end of the bending strength reinforcing portion 5 reaches the outermost peripheral end of the pallet 4 is easily damaged. Therefore, as described above, the outermost peripheral end of the pallet 4 is not molded with a molding material having a high bending strength, and the bending strength is improved by molding with a molding material that molds a portion other than the bending strength reinforcing portion 5. In addition to the pallet 4, it is possible to provide a pallet 4 that can prevent a decrease in impact resistance and is not easily damaged by the impact. In addition, the bending portion of the fork insertion portion 3 of the pallet 4 is not formed with a molding material having a high bending strength, and is not easily damaged even when the tip of the fork collides by being formed with another molding material. .

更に、パレット４の一部を持ち上げて引きずりながら移動しても、削れて塵が発生し難いものである。   Further, even if a part of the pallet 4 is lifted and dragged and moved, it is less likely to be scraped and generate dust.

また、上記各実施形態において、桁部２間を繋ぐ部位に、他の部位を成形する成形材料よりも曲げ強度の強い成形材料で成形した曲げ強度補強部５を設けるに当たり、桁部２間を繋ぐ曲げ強度補強部５は、桁部２の一部を含ませて一体に成形してもよい。このように桁部２の一部２ｃを桁部２間を繋ぐ部位と一体に曲げ強度の強い材料で成形して曲げ強度補強部５を形成してあることで、高価な曲げ強度の強い成形材料の使用量をできるだけ少なくしながら曲げ強度補強部５の曲げ強度を向上させることができる。   Moreover, in each said embodiment, in providing the bending strength reinforcement part 5 shape | molded with the molding material whose bending strength is stronger than the molding material which shape | molds another part in the site | part which connects between the beam parts 2, between the beam parts 2 is provided. The bending strength reinforcing part 5 to be joined may include a part of the girder part 2 and be integrally formed. As described above, the bending strength reinforcing portion 5 is formed by molding a part 2c of the spar 2 with a material having a high bending strength integrally with a portion connecting the spar 2 to each other, thereby forming an expensive high bending strength. The bending strength of the bending strength reinforcing portion 5 can be improved while reducing the amount of material used as much as possible.

ここで、図５の実施形態のように、桁部２における桁部２間を繋ぐ部位に隣接した部位の上下全長で且つ全厚みを曲げ強度の強い成形材料により成形して曲げ強度補強部５を形成してもよい。   Here, as in the embodiment of FIG. 5, the bending strength reinforcing portion 5 is formed by molding the entire thickness of the portion adjacent to the portion connecting the spar 2 in the spar 2 with the entire thickness of the slab by a molding material having a high bending strength. May be formed.

また、図１７（ａ）、（ｃ）の実施形態のように、桁部２における桁部２間を繋ぐ部位に隣接した部位の上下全長で且つ厚み巾の略半分厚を曲げ強度の強い成形材料により成形して曲げ強度補強部５を形成してもよい。この形状の上半体４ａと、下半体４ｂとを溶着すると、フォーク挿入部３を囲むようにロ字状になり、より一層曲げ強度が向上する。   Moreover, like embodiment of FIG. 17 (a), (c), it is the shaping | molding with strong bending strength about the half length of the thickness width in the vertical and full length of the site | part adjacent to the site | part which connects between the beam parts 2 in the beam part 2. FIG. The bending strength reinforcing portion 5 may be formed by molding with a material. When the upper half 4a and the lower half 4b of this shape are welded, a round shape is formed so as to surround the fork insertion portion 3, and the bending strength is further improved.

また、図１７（ｄ）に示す実施形態のように、桁部２における桁部２間を繋ぐ部位に隣接した部位の補強リブ６の上下高さに対応した部位（つまり桁部２の上下長さの略半分）で且つ全厚み巾を曲げ強度の強い成形材料により成形して曲げ強度補強部５を形成してもよい。   Further, as in the embodiment shown in FIG. 17 (d), the portion corresponding to the vertical height of the reinforcing rib 6 in the portion adjacent to the portion connecting the spar 2 in the spar 2 (that is, the vertical length of the spar 2). The bending strength reinforcing portion 5 may be formed by molding the entire thickness width with a molding material having a high bending strength.

もちろん、桁部２間を繋ぐ部位の一部と、桁部２の一部を上記のように曲げ強度の強い成形材料により一体に成形して曲げ強度補強部５を形成するもののみに限定されず、図１７（ｂ）に示すように、桁部２の外側（フォーク挿入部３側）に、他の部位を成形する成形材料よりも曲げ強度の強い成形材料で成形した曲げ強度補強部５を設けてもよい。また、図１７（ｂ）（ｄ）に示す実施形態の上半体４ａと、下半体４ｂとを溶着すると、タルク入り等の曲げ強度に強い成形材料とは異なる他の成形材料同士が溶着されることになり、溶着強度が劣ることはない。   Of course, it is limited only to the part which connects the part between the girder parts 2 and the part where the girder part 2 is integrally formed with the molding material having a high bending strength as described above to form the bending strength reinforcing part 5. First, as shown in FIG. 17 (b), the bending strength reinforcing portion 5 formed on the outer side of the girder portion 2 (on the fork insertion portion 3 side) with a molding material having a bending strength stronger than the molding material for molding other portions. May be provided. Also, when the upper half 4a and the lower half 4b of the embodiment shown in FIGS. 17 (b) and 17 (d) are welded, other molding materials different from molding materials having strong bending strength such as talc are welded together. Therefore, the welding strength is not inferior.

更に、上記各実施形態では、桁部２間を繋ぐ部位に曲げ強度の強い成形材料で成形した曲げ強度補強部５を設けるに当たって、該当する部位の補強リブ６に加え該当する部位のデッキ部１の全厚み巾を曲げ強度の強い成形材料で成形して曲げ強度補強部５を設けた例を示したが、図１７（ｃ）に示すように該当する部位の補強リブ６に加え該当する部位のデッキ部１の厚み巾の裏面側の略半分を曲げ強度の強い成形材料で成形して曲げ強度補強部５を設けてもよい。このように、該当するデッキ部１の裏面側の略半分を曲げ強度の強い成形材料で成形することで、デッキ部１の表面に曲げ強度の強い成形材料が露出せず、したがって、デッキ部１の表面に衝撃が加わっても、破損しないようにできる。また、自動倉庫のチェーンコンベア等の搬送装置でパレット４を搬送しても、パレット４が削れて塵の発生に繋がらないことや、パレット４の一部を持ち上げて引きずりながら移動しても、削れて塵が発生し難いものである。ここで、図示を省略しているが、図５、図１７（ａ）（ｂ）（ｄ）の各実施形態等においてもデッキ部１においてはデッキ部１の厚み巾の裏面側の略半分を曲げ強度の強い成形材で成形するようにしてもよい。   Further, in each of the above embodiments, when the bending strength reinforcing portion 5 formed of a molding material having a high bending strength is provided at a portion connecting the beam portions 2, the deck portion 1 of the corresponding portion in addition to the reinforcing rib 6 of the corresponding portion. Although the example which provided the bending strength reinforcement part 5 by shape | molding the whole thickness width of this with the molding material with strong bending strength was shown, as shown in FIG.17 (c), in addition to the reinforcement rib 6 of an applicable part, applicable site | part The bending strength reinforcing portion 5 may be provided by molding substantially half of the thickness width of the deck portion 1 on the back side with a molding material having high bending strength. In this way, by molding substantially half of the back side of the corresponding deck portion 1 with a molding material having a high bending strength, the molding material having a high bending strength is not exposed on the surface of the deck portion 1. Even if an impact is applied to the surface, it can be prevented from being damaged. In addition, even if the pallet 4 is transported by a transport device such as a chain conveyor in an automatic warehouse, the pallet 4 is shaved and does not cause dust generation, or even if a part of the pallet 4 is lifted and dragged and moved. It is hard to generate dust. Here, although not shown in the drawings, in each of the embodiments of FIGS. 5, 17 (a), (b), and (d), in the deck portion 1, approximately half of the thickness width of the deck portion 1 on the back side is used. You may make it shape | mold with a molding material with strong bending strength.

また、曲げ強度に強い成形材料が桁部２及び一部の桁部２を含む図１７（ａ）（ｃ）（ｄ）の各実施形態は、パレット４上面からの荷重によって、補強リブが下方に変形する基点の桁部２と補強リブ６の連結部分に、曲げ強度に強い成形材料が成形されているので、より一層曲げ強度が向上する。なお、一箇所の曲げ強度補強部５に図１７（ａ）（ｂ）（ｃ）（ｄ）を組み合わせてもよい。   Further, in each of the embodiments shown in FIGS. 17 (a), 17 (c), and 17 (d), in which the molding material having a high bending strength includes the spar 2 and a part of the spar 2, the reinforcing rib is lowered by the load from the upper surface of the pallet 4. Since a molding material having a high bending strength is formed at the connecting portion between the base portion girder 2 and the reinforcing rib 6 which are deformed into a bending strength, the bending strength is further improved. In addition, you may combine FIG.17 (a) (b) (c) (d) with the bending strength reinforcement part 5 of one place.

桁部２間を繋ぐ部位に曲げ強度の強い成形材料で成形した曲げ強度補強部５を設けるに当たっては、二色成形、サンドイッチ成形、インサート成形等種々の成形方法により成形することができる。また、パレット４の主体を通常のパレット成形材料により成形し、この主体とは別に主体を成形する成形材料よりも曲げ強度の強い成形材料で曲げ強度補強部５を成形し、この別に成形した曲げ強度補強部５をパレット４の主体の桁部２を繋ぐ部位に、嵌合、接着、溶着等の固着手段により固着してもよい。更に、パレット４の主体の成形後、補強リブ６間に曲げ強度の強い成形材料を注入（ホットメルト形式）することで、曲げ強度補強部５を成形してもよい。   In providing the bending strength reinforcing portion 5 formed of a molding material having a high bending strength at a portion connecting between the girder portions 2, it can be formed by various molding methods such as two-color molding, sandwich molding, and insert molding. In addition, the main body of the pallet 4 is formed of a normal pallet molding material, and the bending strength reinforcing portion 5 is formed of a molding material having a bending strength stronger than that of the main body. The strength reinforcing portion 5 may be fixed to a portion connecting the main spar portion 2 of the pallet 4 by fixing means such as fitting, adhesion, and welding. Further, after the main body of the pallet 4 is formed, the bending strength reinforcing portion 5 may be formed by injecting a molding material having a high bending strength between the reinforcing ribs 6 (hot melt type).

また、曲げ強度の強い成形材料と、他の部位を成形する成形材料との色は同じ色であってもよく、異なる色であってもよい。   The color of the molding material having high bending strength and the molding material for molding other parts may be the same color or different colors.

図１８、図１９には桁部２間を繋ぐ部位に曲げ強度の強い成形材料で成形した曲げ強度補強部５を設けるための金型装置１０の一実施形態が示してある。   FIG. 18 and FIG. 19 show an embodiment of a mold apparatus 10 for providing a bending strength reinforcing portion 5 formed of a molding material having a high bending strength at a portion connecting between the girder portions 2.

金型装置１０は、固定金型１１と、固定金型１１に対して移動自在な可動金型１２と、固定金型１１又は可動金型１２に移動に設けたリングコア１３をにより構成してある。   The mold apparatus 10 includes a fixed mold 11, a movable mold 12 that is movable with respect to the fixed mold 11, and a ring core 13 that is provided for movement on the fixed mold 11 or the movable mold 12. .

図１８の実施形態では固定金型１１に凹部１４を設け、凹部１４にリングコア１３を移動自在に嵌め込んだ例を示している。可動金型１２を固定金型１１側に移動して型締めすることで可動金型１２と固定金型１１との対向面にキャビティ１５が形成される。リングコア１３の先端部にはリング状をした凸部１７が設けてあり、図１９（ａ）のようにリングコア１３を前進させて凸部１７を可動金型１２に当接してリング状の凸部１７によりキャビティ１５の一部（桁部２間を繋ぐ部位の一部）を囲った状態で、図１９（ｂ）のようにキャビティ１５の凸部１７により囲われいる部分以外の部分に一次成形材料である成形材料２０を射出する一次射出を行なう。この一次射出終了後に、図１９（ｃ）のように、リングコア１３を後退させて凸部１７の先端面でキャビティ１５の内面の一部を構成させて上記一次射出により射出した成形材料２０の側端面を凸部１７により囲っていたキャビティ１５の未充填部分とを連通させ、次に、このキャビティ１５の未充填部分に図１９（ｄ）のように上記成形材料２０よりも曲げ強度の強い二次成形材料である成形材料２１を射出して図２０に示すように桁部２間を繋ぐ部位に曲げ強度補強部５を成形する。   In the embodiment of FIG. 18, an example is shown in which a recess 14 is provided in the fixed mold 11 and a ring core 13 is movably fitted in the recess 14. A cavity 15 is formed on the opposing surface of the movable mold 12 and the fixed mold 11 by moving the movable mold 12 toward the fixed mold 11 and clamping the mold. A ring-shaped convex portion 17 is provided at the tip of the ring core 13, and as shown in FIG. 19A, the ring core 13 is advanced to bring the convex portion 17 into contact with the movable mold 12 and the ring-shaped convex portion. In a state where a part of the cavity 15 (a part of a part connecting the beam portions 2) is surrounded by 17, primary molding is performed on a part other than the part surrounded by the convex part 17 of the cavity 15 as shown in FIG. The primary injection which injects the molding material 20 which is material is performed. After the completion of the primary injection, as shown in FIG. 19 (c), the ring core 13 is retracted to form a part of the inner surface of the cavity 15 at the tip surface of the convex portion 17, and the side of the molding material 20 injected by the primary injection. The unfilled portion of the cavity 15 whose end face is surrounded by the convex portion 17 is communicated, and then the unfilled portion of the cavity 15 has a higher bending strength than the molding material 20 as shown in FIG. The molding material 21 which is the next molding material is injected, and the bending strength reinforcing portion 5 is formed at a portion connecting the beam portions 2 as shown in FIG.

本発明のパレットの一実施形態の斜視図である。It is a perspective view of one embodiment of the pallet of the present invention. 同上の平面図である。It is a top view same as the above. 同上の図２のＸ−Ｘ線の断面図である。It is sectional drawing of the XX line of FIG. 2 same as the above. 同上の図３のＹ１−Ｙ１線又はＹ２−Ｙ２線の断面図である。It is a cross-sectional view of a Y 1 -Y 1-wire or Y 2 -Y 2 line in FIG. 3; FIG. 同上の曲げ強度補強部と桁部との関係を示す拡大断面図である。It is an expanded sectional view which shows the relationship between a bending strength reinforcement part same as the above and a girder part. 本発明の他の実施例を示し、該他の実施例を図２のＹ１−Ｙ１線又はＹ２−Ｙ２線に対応した部分で切断した断面図である。It shows another embodiment of the present invention, is a cross-sectional view taken along a portion corresponding to the another embodiment the Y 1 -Y 1-wire or Y 2 -Y 2 line in FIG. 本発明の更に他の実施例を示し、該更に他の実施例を図２のＹ１−Ｙ１線又はＹ２−Ｙ２線に対応した部分で切断した断面図である。FIG. 5 is a cross-sectional view showing still another embodiment of the present invention, which is cut at a portion corresponding to the Y 1 -Y 1 line or the Y 2 -Y 2 line of FIG. 本発明の更に他の実施例を示し、該更に他の実施例を図２のＹ１−Ｙ１線又はＹ２−Ｙ２線に対応した部分で切断した断面図である。FIG. 5 is a cross-sectional view showing still another embodiment of the present invention, which is cut at a portion corresponding to the Y 1 -Y 1 line or the Y 2 -Y 2 line of FIG. 本発明の更に他の実施例を示し、該更に他の実施例を図２のＹ１−Ｙ１線又はＹ２−Ｙ２線に対応した部分で切断した断面図である。FIG. 5 is a cross-sectional view showing still another embodiment of the present invention, which is cut at a portion corresponding to the Y 1 -Y 1 line or the Y 2 -Y 2 line of FIG. 本発明の更に他の実施例を示し、該更に他の実施例を図２のＹ１−Ｙ１線又はＹ２−Ｙ２線に対応した部分で切断した断面図である。FIG. 5 is a cross-sectional view showing still another embodiment of the present invention, which is cut at a portion corresponding to the Y 1 -Y 1 line or the Y 2 -Y 2 line of FIG. 本発明の更に他の実施例を示し、該更に他の実施例を図２のＹ１−Ｙ１線又はＹ２−Ｙ２線に対応した部分で切断した断面図である。FIG. 5 is a cross-sectional view showing still another embodiment of the present invention, which is cut at a portion corresponding to the Y 1 -Y 1 line or the Y 2 -Y 2 line of FIG. 本発明の更に他の実施例を示し、該更に他の実施例を図２のＹ１−Ｙ１線又はＹ２−Ｙ２線に対応した部分で切断した断面図である。FIG. 5 is a cross-sectional view showing still another embodiment of the present invention, which is cut at a portion corresponding to the Y 1 -Y 1 line or the Y 2 -Y 2 line of FIG. 本発明の更に他の実施例を示し、該更に他の実施例を図２のＹ１−Ｙ１線又はＹ２−Ｙ２線に対応した部分で切断した断面図である。FIG. 5 is a cross-sectional view showing still another embodiment of the present invention, which is cut at a portion corresponding to the Y 1 -Y 1 line or the Y 2 -Y 2 line of FIG. 本発明の更に他の実施例を示し、該更に他の実施例を図２のＹ１−Ｙ１線又はＹ２−Ｙ２線に対応した部分で切断した断面図である。FIG. 5 is a cross-sectional view showing still another embodiment of the present invention, which is cut at a portion corresponding to the Y 1 -Y 1 line or the Y 2 -Y 2 line of FIG. 本発明の更に他の実施例を示し、該更に他の実施例を図２のＹ１−Ｙ１線又はＹ２−Ｙ２線に対応した部分で切断した断面図である。FIG. 5 is a cross-sectional view showing still another embodiment of the present invention, which is cut at a portion corresponding to the Y 1 -Y 1 line or the Y 2 -Y 2 line of FIG. 本発明の更に他の実施例を示し、該更に他の実施例を図２のＹ１−Ｙ１線又はＹ２−Ｙ２線に対応した部分で切断した断面図である。FIG. 5 is a cross-sectional view showing still another embodiment of the present invention, which is cut at a portion corresponding to the Y 1 -Y 1 line or the Y 2 -Y 2 line of FIG. （ａ）（ｂ）（ｃ）（ｄ）はそれぞれ本発明の他の実施形態における曲げ強度補強部と桁部との関係を示す拡大断面図である。(A) (b) (c) (d) is an expanded sectional view which shows the relationship between the bending strength reinforcement part and girder part in other embodiment of this invention, respectively. 本発明のパレットを製造するための金型装置の一例を示す要部断面図である。It is principal part sectional drawing which shows an example of the metal mold | die apparatus for manufacturing the pallet of this invention. （ａ）（ｂ）（ｃ）（ｄ）は同上の金型装置を用いた成形順序を示す説明図である。(A) (b) (c) (d) is explanatory drawing which shows the shaping | molding order using the mold apparatus same as the above. 同上の曲げ強度補強部を設けた位置の一例を示す説明図である。It is explanatory drawing which shows an example of the position which provided the bending strength reinforcement part same as the above.

符号の説明Explanation of symbols

１ デッキ部
２ 桁部
３ フォーク挿入部
４ パレット
５ 曲げ強度補強部 1 Deck part 2 Girder part 3 Fork insertion part 4 Pallet 5 Bending strength reinforcement part

Claims (4)

載置物を載置するためのデッキ部と、複数の桁部とを備え、桁部間がフォーク挿入部となった合成樹脂製のパレットにおいて、該パレットの桁部間を繋ぐ部位に、他の部位を成形する成形材料よりも曲げ強度の強い成形材料で成形した曲げ強度補強部を設けて成ることを特徴とする合成樹脂製パレット。   In a synthetic resin pallet provided with a deck part for placing the object to be placed and a plurality of girders, and between the girders being a fork insertion part, other parts are connected to the parts connecting the girders of the pallet. A synthetic resin pallet comprising a bending strength reinforcing portion formed of a molding material having a bending strength stronger than that of a molding material for molding a portion. 桁部間を繋ぐ部位を成形するための成形材料中に補強材が添加してあることを特徴とする請求項１記載の合成樹脂製パレット。   The synthetic resin pallet according to claim 1, wherein a reinforcing material is added to a molding material for molding a portion connecting the beam portions. 桁部間を繋ぐ曲げ強度補強部は、桁部の一部を含ませて一体に成形してあることを特徴とする請求項１又は請求項２記載の合成樹脂製パレット。   The synthetic resin pallet according to claim 1 or 2, wherein the bending strength reinforcing portion connecting between the girder portions is formed integrally with a part of the girder portion. 曲げ強度の強い成形材料で成形した曲げ強度補強部の端部がパレットの最外周端よりパレットの内側方向に引き込んだ位置であることを特徴とする請求項１乃至請求項３のいずれかに記載の合成樹脂製パレット。
4. The end of the bending strength reinforcing portion formed of a molding material having a high bending strength is a position where the end of the pallet is drawn inward from the outermost peripheral end of the pallet. Synthetic resin pallet.
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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009202934A (en) * 2008-02-29 2009-09-10 Gifu Plast Ind Co Ltd Synthetic resin-made pallet
JP2009202933A (en) * 2008-02-29 2009-09-10 Gifu Plast Ind Co Ltd Synthetic resin-made pallet
JP2009202935A (en) * 2008-02-29 2009-09-10 Gifu Plast Ind Co Ltd Synthetic resin-made pallet
JP2017007695A (en) * 2015-06-19 2017-01-12 岐阜プラスチック工業株式会社 Pallet and manufacturing method of pallet

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Publication number Priority date Publication date Assignee Title
JPS5074655A (en) * 1973-11-01 1975-06-19
JPH09272538A (en) * 1996-04-05 1997-10-21 Sanei Kk Synthetic resin pallet
JPH11268740A (en) * 1998-03-24 1999-10-05 Dainippon Ink & Chem Inc Synthetic resin pallet and its manufacture
JP2003072753A (en) * 2001-08-27 2003-03-12 Ain Kosan Kk Spring-structured resin pallet and manufacturing method therefor
JP2003267369A (en) * 2002-03-11 2003-09-25 Meiji Rubber & Chem Co Ltd Double insertion pallet and method for manufacturing the same

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5074655A (en) * 1973-11-01 1975-06-19
JPH09272538A (en) * 1996-04-05 1997-10-21 Sanei Kk Synthetic resin pallet
JPH11268740A (en) * 1998-03-24 1999-10-05 Dainippon Ink & Chem Inc Synthetic resin pallet and its manufacture
JP2003072753A (en) * 2001-08-27 2003-03-12 Ain Kosan Kk Spring-structured resin pallet and manufacturing method therefor
JP2003267369A (en) * 2002-03-11 2003-09-25 Meiji Rubber & Chem Co Ltd Double insertion pallet and method for manufacturing the same

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009202934A (en) * 2008-02-29 2009-09-10 Gifu Plast Ind Co Ltd Synthetic resin-made pallet
JP2009202933A (en) * 2008-02-29 2009-09-10 Gifu Plast Ind Co Ltd Synthetic resin-made pallet
JP2009202935A (en) * 2008-02-29 2009-09-10 Gifu Plast Ind Co Ltd Synthetic resin-made pallet
JP2017007695A (en) * 2015-06-19 2017-01-12 岐阜プラスチック工業株式会社 Pallet and manufacturing method of pallet

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