JPH09165813A - Grating and manufacture thereof - Google Patents
Grating and manufacture thereofInfo
- Publication number
- JPH09165813A JPH09165813A JP7330921A JP33092195A JPH09165813A JP H09165813 A JPH09165813 A JP H09165813A JP 7330921 A JP7330921 A JP 7330921A JP 33092195 A JP33092195 A JP 33092195A JP H09165813 A JPH09165813 A JP H09165813A
- Authority
- JP
- Japan
- Prior art keywords
- grating
- skeleton member
- mold
- manufacturing
- molding compound
- 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.)
- Granted
Links
Landscapes
- Sewage (AREA)
- Reinforced Plastic Materials (AREA)
- Moulding By Coating Moulds (AREA)
Abstract
Description
【0001】[0001]
【発明の属する技術分野】本発明は、排水溝ふた、ます
ふた、化粧ふた、歩道、玄関マット、ツリーゴーランド
等に使用されるグレーチングおよびその製造方法に関
し、さらに詳しくは、滑べり止め処理の施されたグレー
チングおよびその製造方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a grating used for drainage gutter lids, mast lids, makeup lids, sidewalks, entrance mats, tree golands, etc., and its manufacturing method. Grating and its manufacturing method.
【0002】[0002]
【従来の技術】従来、排水溝ふた等に使用されるグレー
チングには、歩行の際等の滑べり止めが考慮されていな
いものが多かった。一方、グレーチングの表面に微細な
凹凸を設けて滑べり止めとしたものもあるが、凹凸を施
すために多くの手間を要していた。2. Description of the Related Art Conventionally, many gratings used for drainage channel lids and the like do not consider anti-slip during walking. On the other hand, there is also one in which fine unevenness is provided on the surface of the grating to prevent slipping, but it takes a lot of time and effort to make the unevenness.
【0003】また、グレーチングの製造方法としては、
平板にドリルで一つ一つ孔開けする方法、平板を井桁に
組み合せてグレーチングとする方法等があるが、その製
造に非常に多くの手間を要していた。さらに、FRP製
のグレーチングを製造する場合、従来のようにシートモ
ールディングコンパウンド(以下「SMC」という)ま
たはバルクモールディングコンパウンド(以下「BM
C」という)を所定の形状を有する半割り金型内に供給
し、加熱下で圧縮成形するという方法では、図5に示す
ように貫通孔3の中央部に発生するバリ12の処理に問
題があり、グレーチングを構成する骨格部材4間の一つ
一つのバリの処理に非常に多くの手間を要することか
ら、ハンドレイアップ法やスプレイアップ法といった非
モールド成形法が採用されていた。Further, as a manufacturing method of grating,
There are methods such as drilling holes in the flat plate one by one, and combining the flat plate with the cross girder for grating, etc., but it took a lot of time and effort to manufacture the plate. Further, when manufacturing a grating made of FRP, a sheet molding compound (hereinafter referred to as "SMC") or a bulk molding compound (hereinafter referred to as "BM") is used as in the past.
C ”) is fed into a half mold having a predetermined shape and compression-molded under heating, as shown in FIG. 5, there is a problem in processing the burr 12 generated in the central portion of the through hole 3. However, it takes a great deal of time to process each burr between the skeleton members 4 constituting the grating, so that a non-mold forming method such as a hand layup method or a spray up method has been adopted.
【0004】すなわち、成形に伴うバリは、半割り金型
の合わせ面となる貫通孔の中央部に発生するため、貫通
孔におけるバリ処理は、貫通孔の一つ一つにおいて垂直
方向にバリ取り用のカッター等を用いて除去しなければ
ならず、貫通孔の数に応じた工数を必要とし、非常に多
くの手間を要するという問題があった。That is, since burr accompanying molding is generated in the central portion of the through hole which is the mating surface of the half mold, the burr treatment in the through hole is performed by deburring vertically in each of the through holes. There is a problem in that it must be removed using a cutter or the like for use, a man-hour corresponding to the number of through holes is required, and a great deal of labor is required.
【0005】[0005]
【発明が解決しようとする課題】そこで、本発明は、単
純形状かつ効果的な滑べり止め処理が施されたグレーチ
ングの提供および成形サイクルの速い加熱圧縮成形にお
いて一度にすべてのバリを除去することができ、生産性
を大幅に向上することができるグレーチングの製造方法
を提供することを目的とする。SUMMARY OF THE INVENTION Therefore, the present invention provides a grating having a simple shape and an effective anti-slip treatment, and removes all burrs at once in hot compression molding having a fast molding cycle. It is an object of the present invention to provide a method for manufacturing a grating which can improve the productivity and can significantly improve the productivity.
【0006】[0006]
【課題を解決するための手段】上述の目的を達成するた
め、第1の発明は、骨格部材と骨格部材間に設けられた
貫通孔とからなるグレーチングにおいて、前記骨格部材
の端縁部に貫通孔を囲う凸部を設けたものであり、第2
の発明は、SMCまたはBMCを所定の形状を有する金
型内に供給し、加熱下で圧縮成形して骨格部材と貫通孔
とからなるグレーチングを製造する方法において、圧縮
成形に伴って発生するバリを前記骨格部材の端縁部に凸
状に発生させ、その後、バリを骨格部材の外表面から
0.1mm以上7mm以下の範囲で残して取り除くことによ
り凸部を形成するようにしたグレーチングの製造方法で
あり、第3の発明は、前記SMCまたはBMCを、切断
長さが16分の1インチ以上、1インチ以下のガラス繊
維を15%以上、55%以下含有する不飽和ポリエステ
ル樹脂組成物としたものである。In order to achieve the above-mentioned object, a first invention is a grating consisting of a skeleton member and a through hole provided between the skeleton members. It has a convex part that surrounds the hole.
In the method of manufacturing a grating including a skeletal member and a through hole by supplying SMC or BMC into a mold having a predetermined shape and performing compression molding under heating, burrs generated by the compression molding are disclosed. Of the skeleton member in a convex shape, and then removing burrs from the outer surface of the skeleton member in a range of 0.1 mm or more and 7 mm or less to form a convex portion, thereby producing a grating. A third invention is a method, wherein the SMC or BMC is an unsaturated polyester resin composition containing 15% or more and 55% or less of glass fibers having a cut length of 1/16 inch or more and 1 inch or less. It was done.
【0007】[0007]
【発明の実施の形態】第1の発明においては、グレーチ
ングを構成する骨格部材の端縁部に貫通孔を囲う凸部を
設けただけなので簡単に製造することができ、雨天時等
の滑べり易い状況下で歩行者がグレーチング上を歩いて
も、靴底が凸部に引っ掛かって確実に滑べり止めとな
り、転倒することがない。BEST MODE FOR CARRYING OUT THE INVENTION In the first aspect of the present invention, since only the convex portion surrounding the through hole is provided at the end edge portion of the skeleton member constituting the grating, it can be easily manufactured and slips in rainy weather. Even if a pedestrian walks on the grating in an easy situation, the sole of the shoe catches on the convex portion, which surely prevents slipping and does not fall.
【0008】また、第2の発明においては、グレーチン
グを成形サイクルの速い加熱圧縮成形で製造し、その
際、上型と下型を金型の中央部でなく、製品となるグレ
ーチングの外側で割り、圧縮成形に伴うバリを骨格部材
の外側の金型の合わせ面で外部に凸状に発生させ、バリ
を骨格部材の外表面から0.1mm以上7mm以下の範囲で
残してバリ取り用のカッター等を移動させれば、骨格部
材の外表面から突出しているバリを滑べり止めとなる凸
部を残して一度に切断することが可能となり、貫通孔の
一つ一つのバリ取りをする必要がないため、生産性が大
幅に向上する。この場合、凸状のバリの内面と貫通孔の
外表面との内角を5度以上、90度以下となるように突
出させることが好ましい。According to the second aspect of the invention, the grating is manufactured by heat compression molding with a fast molding cycle, in which case the upper die and the lower die are divided not on the central portion of the die but on the outside of the grating to be the product. , A cutter for deburring by generating burrs associated with compression molding on the outside of the skeleton member at the mating surface of the mold and leaving burrs within a range of 0.1 mm to 7 mm from the outer surface of the skeleton member. It is possible to remove the burrs protruding from the outer surface of the skeletal member at a time by leaving the protrusions that prevent slipping, and it is necessary to remove burrs for each through hole. Productivity is greatly improved because it does not exist. In this case, it is preferable that the inner angle between the inner surface of the convex burr and the outer surface of the through hole is projected to be 5 degrees or more and 90 degrees or less.
【0009】さらに、第3の発明は、SMCまたはBM
Cとして、切断長さが16分の1インチ以上、1インチ
以下のガラス繊維を15%以上、55%以下含有した不
飽和ポリエステル樹脂組成物を用いたので、グレーチン
グの各骨格部材の内部にまでガラス繊維が多く入り込
み、強度と外観が向上する。ここで、ガラス繊維の切断
長さが16分の1インチ未満であると、ガラス繊維によ
る補強効果を得ることができず、1インチより長いと、
各格子の内部にガラス繊維が入り込み難くなり、パネル
の強度と外観が低下する。また、ガラス繊維の含有量が
15%未満であると、ガラス繊維による補強効果を得る
ことができず、55%より多いとSMCまたはBMCの
流動性が悪くなり、各格子の所定の形状を得ることが困
難になる。Further, the third invention is SMC or BM.
As C, an unsaturated polyester resin composition containing 15% or more and 55% or less of glass fibers having a cut length of 1/16 inch or more and 1 inch or less was used, so that even inside each grating skeleton member A large amount of glass fiber is incorporated to improve strength and appearance. Here, if the cut length of the glass fiber is less than 1/16 inch, the reinforcing effect by the glass fiber cannot be obtained, and if it is longer than 1 inch,
It becomes difficult for glass fibers to enter the inside of each lattice, and the strength and appearance of the panel deteriorate. Further, if the content of glass fiber is less than 15%, the reinforcing effect by the glass fiber cannot be obtained, and if it is more than 55%, the fluidity of SMC or BMC is deteriorated and a predetermined shape of each lattice is obtained. Becomes difficult.
【0010】[0010]
【実施例】以下に、本発明の好適な実施例を図面を参照
して説明する。図1は、本発明の排水溝ふた用グレーチ
ングの一例を示す斜視図であって、グレーチング1を構
成する骨格部材4の端縁部に貫通孔3を囲う凸部13が
設けられている。骨格部材4の幅d1は7mmとなってお
り、貫通孔3は長さ30mm、幅12mmの長方形である。
また、凸部13は、高さ0.7mm、幅1mm、立ち上げ角
15°となっている。グレーチング1は、図示しない排
水溝に枠体2がはまり込み、排水溝ふたとなる。また、
図2は、図1におけるA−A部の切り欠き部を示す図で
ある。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view showing an example of the draining groove lid grating of the present invention, in which a convex portion 13 that surrounds the through hole 3 is provided at an end edge portion of a skeleton member 4 that constitutes the grating 1. The skeleton member 4 has a width d1 of 7 mm, and the through hole 3 is a rectangle having a length of 30 mm and a width of 12 mm.
Further, the convex portion 13 has a height of 0.7 mm, a width of 1 mm, and a rising angle of 15 °. The grating 1 serves as a drain groove lid in which the frame body 2 is fitted in a drain groove (not shown). Also,
FIG. 2 is a view showing a cutout portion of AA portion in FIG.
【0011】図3は、本発明のグレーチングのバリ取り
前の状態を示す斜視図であって、圧縮成形に伴って発生
したバリ12が骨格部材4の外側に凸状に発生してい
る。この中間成形物は、この後、図示しないカッターを
矢印方向に移動させることにより、バリ12が骨格部材
4の外表面7から0.7mm残された状態で一度に取り除
かれる。残されたバリ12は最終的に滑べり止め用凸部
13を形成し、本発明のグレーチング1が得られる。滑
べり止め用凸部13の高さは、バリ取り位置を変化させ
るだけで、簡単に調整できる。FIG. 3 is a perspective view showing a state before deburring of the grating according to the present invention, in which burrs 12 generated by the compression molding are convexly formed on the outer side of the skeleton member 4. Thereafter, the intermediate molded product is removed at once by moving a cutter (not shown) in the direction of the arrow while leaving the burr 12 at 0.7 mm from the outer surface 7 of the skeleton member 4. The remaining burr 12 finally forms the non-slip convex portion 13, and the grating 1 of the present invention is obtained. The height of the non-slip convex portion 13 can be easily adjusted by changing the deburring position.
【0012】図4は、本発明の製造方法に使用する金型
の一例を示す一部断面図であって、図3の中間成形物
は、切断長さが8分の1インチのガラス繊維を25%含
有する不飽和ポリエステル組成物からなるSMCを金型
5内に供給し、温度140℃、圧力50Kg/cm2、保持時
間5分の条件で加熱圧縮成形して得られたものである。
金型は上型5aと下型5bとからなり、上下の金型の分
割面6は、骨格部材4の外表面7と一致している。そし
て、分割面6における下型5bの立ち上げ角8は85
度、上型5aまでの角度9は90度である。SMCの加
熱圧縮に伴い、上型5aと下型5bとで構成されるキャ
ビティー10、11内にSMCが流動し、キャビティー
10により骨格部材4が、キャビティー11によりバリ
12が形成される。金型5から取り出された中間成形物
には図3に示すような凸状のバリ12が残っており、バ
リ12の内面と骨格部材4の外表面7との内角は、下型
5bの立ち上げ角8、すなわち、85度である。なお、
キャビティー10の幅を下方に行くにしたがって狭くす
れば、金型からの抜き出しが容易になる。FIG. 4 is a partial cross-sectional view showing an example of a mold used in the manufacturing method of the present invention. The intermediate molded product of FIG. 3 is made of glass fiber having a cut length of 1/8 inch. It was obtained by supplying SMC consisting of an unsaturated polyester composition containing 25% into a mold 5 and heating and compression molding under the conditions of a temperature of 140 ° C., a pressure of 50 kg / cm 2 , and a holding time of 5 minutes.
The mold is composed of an upper mold 5a and a lower mold 5b, and the dividing surfaces 6 of the upper and lower molds coincide with the outer surface 7 of the skeleton member 4. The rising angle 8 of the lower die 5b on the split surface 6 is 85.
And the angle 9 to the upper die 5a is 90 degrees. Along with the heating and compression of the SMC, the SMC flows in the cavities 10 and 11 formed by the upper mold 5a and the lower mold 5b, and the skeleton member 4 is formed by the cavity 10 and the burr 12 is formed by the cavity 11. . A convex burr 12 as shown in FIG. 3 remains on the intermediate molded product taken out from the mold 5, and the inner angle between the inner surface of the burr 12 and the outer surface 7 of the skeleton member 4 is the same as that of the lower mold 5b. The raising angle is 8, that is, 85 degrees. In addition,
If the width of the cavity 10 becomes narrower as it goes downward, it becomes easier to extract from the mold.
【0013】本発明のグレーチング1は、排水溝ふた、
ますふた、化粧ふた、歩道、玄関マット、ツリーゴーラ
ンド等に使用することができる。なお、貫通孔3および
グレーチング1は、四角形に限るものではなく、菱形、
円形、ハート形等の任意の形状にすることができ、その
数も任意に設定することができる。また、滑べり止め用
凸部の高さも必要に応じて任意に設定することができ
る。The grating 1 of the present invention includes a drain cover,
It can be used for lids, makeup lids, sidewalks, entrance mats, tree golands, etc. The through hole 3 and the grating 1 are not limited to the quadrangle, but a rhombus,
The shape can be an arbitrary shape such as a circle or a heart shape, and the number thereof can also be set arbitrarily. Further, the height of the non-slip convex portion can be arbitrarily set as required.
【0014】[0014]
【発明の効果】以上説明したように、本発明のグレーチ
ングおよびその製造方法によれば、グレーチングを構成
する骨格部材の端縁部に貫通孔を囲う凸部を設けただけ
なので簡単に製造することができ、雨天時等の滑べり易
い状況下で歩行者がグレーチング上を歩いても、靴底が
凸部に引っ掛かって確実に滑べり止めとなり、転倒する
ことがない。As described above, according to the grating and the method of manufacturing the grating of the present invention, the skeleton member constituting the grating is simply provided with the convex portion surrounding the through hole, which is easy to manufacture. Therefore, even if a pedestrian walks on the grating in a slippery condition such as in the rain, the soles of the shoes will be caught by the convex portions to prevent slipping and prevent the bicycle from tipping over.
【0015】また、グレーチングをSMCまたはBMC
を所定の形状を有する金型内に供給し、加熱下で一体的
に圧縮成形するので成形サイクルが速くなり、上型と下
型を金型の中央部でなく、製品となるグレーチングの外
側で割り、圧縮成形に伴うバリを骨格部材の外側の金型
の合わせ面で外部に凸状に発生させ、バリを骨格部材の
外表面から0.1mm以上7mm以下の範囲で残してバリを
取り除いたので、骨格部材の外表面から突出しているバ
リを滑べり止めとなる凸部を残して一度に切断すること
が可能となり、貫通孔の一つ一つのバリ取りをする必要
がないため、生産性が大幅に向上する。また、SMCま
たはBMCとして、切断長さが16分の1インチ以上、
1インチ以下のガラス繊維を15%以上、55%以下含
有した不飽和ポリエステル樹脂組成物を用いれば、各骨
格部材の内部にまでガラス繊維が多く入り込み、強度と
外観が向上する。Further, the grating may be SMC or BMC.
Is supplied into a mold having a predetermined shape and is integrally compression-molded under heating, so the molding cycle is faster, and the upper and lower molds are not in the center of the mold but outside the grating that will be the product. The burrs caused by the splitting and compression molding were generated in a convex shape on the outside of the skeleton member at the mating surface of the mold, and the burrs were removed from the outer surface of the skeleton member within a range of 0.1 mm to 7 mm. Therefore, it is possible to cut burrs protruding from the outer surface of the skeletal member at a time, leaving a convex portion that prevents slipping, and it is not necessary to deburr each through hole individually, so productivity is improved. Is greatly improved. Also, as SMC or BMC, the cutting length is 1/16 inch or more,
When an unsaturated polyester resin composition containing 15% or more and 55% or less of glass fibers of 1 inch or less is used, a large amount of glass fibers penetrates into each skeleton member, and the strength and appearance are improved.
【図1】本発明のグレーチングを示す斜視図である。FIG. 1 is a perspective view showing a grating of the present invention.
【図2】本発明のグレーチングを一部で切り欠いた斜視
図である。FIG. 2 is a perspective view in which the grating of the present invention is partially cut away.
【図3】本発明により製造されるグレーチングのバリ取
り前の状態を示す斜視図である。FIG. 3 is a perspective view showing a state before deburring of a grating manufactured according to the present invention.
【図4】本発明の製造方法に使用する金型の一例を示す
一部断面図である。FIG. 4 is a partial cross-sectional view showing an example of a mold used in the manufacturing method of the present invention.
【図5】従来のグレーチングの製造方法によるバリの発
生状態を示す斜視図である。FIG. 5 is a perspective view showing a state in which burrs are generated by a conventional grating manufacturing method.
1 グレーチング 2 枠体 3 貫通孔 4 骨格部材 5 金型 5a 上型 5b 下型 6 上下の金型の分割面 7 骨格部材の外表面 8 金型の分割面における下型の立ち上げ角 9 金型の分割面における上型までの角度 10,11 上型と下型とで構成されるキャビティー 12 バリ 13 凸部 1 Grating 2 Frame 3 Through Hole 4 Skeleton Member 5 Mold 5a Upper Mold 5b Lower Mold 6 Upper and Lower Mold Dividing Surfaces 7 Outer Surface of Skeleton Member 8 Lower Mold Rise Angle on Mold Dividing Surface 9 Mold Angle to the upper mold on the divided surface of the cavity 10, 11 Cavity composed of upper mold and lower mold 12 Burr 13 Convex part
Claims (3)
孔とからなるグレーチングにおいて、前記骨格部材の端
縁部に、貫通孔を囲う凸部を設けたことを特徴とするグ
レーチング。1. A grating comprising a skeleton member and a through hole provided between the skeleton members, wherein a grating portion surrounding the through hole is provided at an edge portion of the skeleton member.
はバルクモールディングコンパウンドを所定の形状を有
する金型内に供給し、加熱下で圧縮成形して骨格部材と
貫通孔とからなるグレーチングを製造する方法におい
て、圧縮成形に伴って発生するバリを前記骨格部材の端
縁部に凸状に発生させ、その後、バリを骨格部材の外表
面から0.1mm以上7mm以下の範囲で残して取り除くこ
とにより凸部を形成することを特徴とするとする請求項
1に記載のグレーチングの製造方法。2. A method for producing a grating consisting of a skeletal member and a through hole by supplying a sheet molding compound or a bulk molding compound into a mold having a predetermined shape and performing compression molding under heating. Forming a convex portion by generating a burr generated along with it in a convex shape on the edge portion of the skeleton member, and then removing the burr from the outer surface of the skeleton member within a range of 0.1 mm or more and 7 mm or less. The manufacturing method of the grating according to claim 1, wherein:
またはバルクモールディングコンパウンドが、切断長さ
が16分の1インチ以上、1インチ以下のガラス繊維を
15%以上、55%以下含有する不飽和ポリエステル樹
脂組成物であることを特徴とする請求項2に記載のグレ
ーチングの製造方法。3. The sheet molding compound or bulk molding compound is an unsaturated polyester resin composition containing 15% or more and 55% or less of glass fibers having a cut length of 1/16 inch or more and 1 inch or less. The method for manufacturing a grating according to claim 2, wherein:
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP33092195A JP3568664B2 (en) | 1995-12-19 | 1995-12-19 | Manufacturing method of grating |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP33092195A JP3568664B2 (en) | 1995-12-19 | 1995-12-19 | Manufacturing method of grating |
Publications (2)
Publication Number | Publication Date |
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JPH09165813A true JPH09165813A (en) | 1997-06-24 |
JP3568664B2 JP3568664B2 (en) | 2004-09-22 |
Family
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Application Number | Title | Priority Date | Filing Date |
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JP33092195A Expired - Fee Related JP3568664B2 (en) | 1995-12-19 | 1995-12-19 | Manufacturing method of grating |
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JP (1) | JP3568664B2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101536955B1 (en) * | 2014-04-01 | 2015-07-15 | 글로벌피앤에프주식회사 | Grating method with clean tech wood composites |
US11400662B2 (en) * | 2018-10-12 | 2022-08-02 | Airbus Operations (S.A.S.) | Method for manufacturing a stiffened structural panel for an aircraft |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR102150402B1 (en) * | 2015-05-29 | 2020-09-01 | 이장원 | Conduit trench for draining water of the underground building structure |
KR101991729B1 (en) * | 2015-06-08 | 2019-06-21 | 이장원 | Conduit trench for draining water of the building structure |
-
1995
- 1995-12-19 JP JP33092195A patent/JP3568664B2/en not_active Expired - Fee Related
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101536955B1 (en) * | 2014-04-01 | 2015-07-15 | 글로벌피앤에프주식회사 | Grating method with clean tech wood composites |
US11400662B2 (en) * | 2018-10-12 | 2022-08-02 | Airbus Operations (S.A.S.) | Method for manufacturing a stiffened structural panel for an aircraft |
Also Published As
Publication number | Publication date |
---|---|
JP3568664B2 (en) | 2004-09-22 |
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