JPH0780926A - Sheet having bending rule applied - Google Patents
Sheet having bending rule appliedInfo
- Publication number
- JPH0780926A JPH0780926A JP22743093A JP22743093A JPH0780926A JP H0780926 A JPH0780926 A JP H0780926A JP 22743093 A JP22743093 A JP 22743093A JP 22743093 A JP22743093 A JP 22743093A JP H0780926 A JPH0780926 A JP H0780926A
- Authority
- JP
- Japan
- Prior art keywords
- sheet
- bending
- folded
- folding
- becomes
- 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
- Shaping Of Tube Ends By Bending Or Straightening (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、プラスチック製の折り
曲げ罫線入りシートに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plastic sheet with folding lines.
【０００２】[0002]
【従来の技術】プラスチック製の組み立てケースの素材
となる折り曲げ罫線入りシートは、平坦なプラスチック
シートの曲げ部分に溝状の折り曲げ罫線を設けてこの部
分から曲げやすくしている。2. Description of the Related Art A folded ruled sheet, which is a material for a plastic assembly case, is provided with groove-shaped folded ruled lines in a bent portion of a flat plastic sheet so that the bent portion can be easily bent.
【０００３】[0003]
【発明が解決しようとする課題】しかし従来の折り曲げ
罫線入りシートは、折り曲げ罫線の折り曲げ応力が大き
いので、折り曲げた時に折り曲げ罫線の両側のシート面
が折り曲げ外側にふくらんで所定角度に曲がらず見苦し
いものとなる。However, since a conventional sheet having a folded ruled line has a large bending stress of the folded ruled line, the sheet surface on both sides of the folded ruled line bulges outward at the time of folding and is unsightly at a predetermined angle. Becomes
【０００４】これらの現状を解決するために手で角部を
押えて折り返して所定角度に仕上げる手法があるが、手
間がかかり、押え力によって角度にばらつきが発生す
る。また罫線を深く入れることにより曲げ応力を小さく
して解決する場合もあるが、材質によっては罫線を深く
入れると罫線部分が弱くなったり、割れたりする問題が
発生する。In order to solve these problems, there is a method of pressing a corner portion by hand and folding it back to finish it at a predetermined angle. However, it takes time and the pressing force causes a variation in the angle. There are also cases where the bending stress is reduced by making the ruled lines deeper to solve the problem, but depending on the material, if the ruled lines are deeply inserted, the problem of weakening or cracking of the ruled lines occurs.
【０００５】[0005]
【課題を解決するための手段】本発明は、上記問題点を
解決するために考え出されたもので、プラスチック製シ
ートに、折り曲げ用の罫線を設けてなる折り曲げ罫線入
りシートにおいて、折り曲げ内側のシート面が凸面とな
るようにカールさせてなることを特長とする折り曲げ罫
線入りシートである。The present invention has been conceived to solve the above-mentioned problems, and in a folded crease-containing sheet in which a fold line for folding is provided on a plastic sheet, A folded ruled sheet characterized by being curled so that the sheet surface becomes a convex surface.
【０００６】このことにより、本発明の折り曲げ罫線入
りシートを折り曲げた場合に、折り曲げ罫線の折り曲げ
応力に対抗して折り曲げ内側に向かうカール応力によ
り、折り曲げ罫線の両側のシート面が折り曲げ外側にふ
くらむのを防ぎ、所定角度に仕上げることができる。As a result, when the sheet with folded creases of the present invention is folded, the sheet surface on both sides of the folded creases bulges outward due to the curl stress toward the inner side of the fold against the bending stress of the creases. And can be finished to a predetermined angle.
【０００７】以下、本発明を添付した図面に基いて説明
する。図１は本発明の折り曲げ罫線入りシートの一例を
示す断面正面図、図２は図１の折り曲げ罫線入りシート
により組み立てケースを組み立てる順序を示す断面正面
図、図３は本発明の折り曲げ罫線入りシートを製造する
装置の一例を説明する断面正面図であり、図４は同じく
折り曲げ罫線入りシートを製造する装置の他の例を説明
する断面正面図である。The present invention will be described below with reference to the accompanying drawings. FIG. 1 is a sectional front view showing an example of a folded ruled sheet of the present invention, FIG. 2 is a sectional front view showing an order of assembling an assembly case by the folded ruled sheet of FIG. 1, and FIG. 3 is a folded ruled sheet of the present invention. FIG. 4 is a sectional front view for explaining an example of an apparatus for manufacturing a sheet, and FIG. 4 is a sectional front view for explaining another example of an apparatus for manufacturing a sheet with folded ruled lines.
【０００８】本発明は図１ないし図４に示すように、プ
ラスチック製シート１に、折り曲げ用の罫線２を設けて
なる折り曲げ罫線入りシートにおいて、折り曲げ内側の
シート面１１が凸面となるようにカールさせてなること
を特長とする折り曲げ罫線入りシートである。As shown in FIGS. 1 to 4, the present invention is a sheet having a folding ruled line in which a folding line 2 is provided on a plastic sheet 1 so that the sheet surface 11 on the inner side of the folding is curled. It is a sheet with folding ruled lines that is characterized by being made.
【０００９】この折り曲げ罫線入りシートを用いて組み
立てケースを組み立てるためには、例えば図２に示すよ
うに、ａ 折り曲げ内面１１が凸面となるように、矢印
方向に半折して、ｂ 糊代１２を他端に接着して筒状と
し、矢印方向に開き起こして、ｃ 四角筒状の組み立て
ケースに組み立てることができる。In order to assemble an assembly case using this sheet with folding lines, for example, as shown in FIG. 2, half-fold in the direction of the arrow so that the inner surface 11 of the fold is a convex surface, and the margin 12 of the glue 12 Can be attached to the other end to form a tube, which can be opened and raised in the direction of the arrow to be assembled into a c-square tube-shaped assembly case.
【００１０】折り曲げ内側のシート面１１が凸面となる
ようにカールさせる方法としては、たとえば図３に示す
様に罫線刃３を植え付けた押型４と受け台５の間でプラ
スチック製シート１を挟圧するにあたり、予め全体にカ
ールさせたプラスチック製シート１に、罫線刃３を押し
付けることにより所定の折り曲げ罫線２を設け、折り曲
げ内側のシート面１１が凸面となるように折り曲げて端
部同士を接着し、筒状に組立てることにより所定角度の
組み立てケースを得ることができる。As a method of curling the sheet surface 11 on the inner side of the fold so as to be a convex surface, for example, as shown in FIG. 3, the plastic sheet 1 is pressed between the pressing die 4 in which the ruled line blades 3 are planted and the receiving base 5. At this time, a predetermined folding ruled line 2 is provided by pressing the ruled line blade 3 on the plastic sheet 1 which has been curled in its entirety in advance, and is bent so that the sheet surface 11 on the inner side of the folding is a convex surface and the end portions are bonded to each other By assembling in a tubular shape, an assembly case having a predetermined angle can be obtained.
【００１１】また、図４に示す様に罫線刃３を植え付け
た押型４と受け台５の間でプラスチック製シート１を押
圧するにあたり、受け台５の罫線間の位置に台材５１を
設けておき、平坦なプラスチック製シート１を受け台５
上に位置させ上部より罫線刃３で押圧することで、台材
５１に支えられた部分が折り曲げ内側のシート面が凸面
となるようにカールしたシートが得られる。尚この場
合、予めプラスチック製シート１を加熱しておいたり、
受け台５、台材５１を加熱してもよい。Further, as shown in FIG. 4, when pressing the plastic sheet 1 between the pressing die 4 in which the ruled line blade 3 is planted and the receiving table 5, a base material 51 is provided at a position between the ruled lines of the receiving table 5. Place the flat plastic sheet 1 on the cradle 5
A sheet curled such that the portion supported by the base material 51 is bent so that the inner sheet surface is a convex surface is obtained by pressing the ruled line blade 3 from the upper position. In this case, if the plastic sheet 1 is heated in advance,
The pedestal 5 and the base material 51 may be heated.
【００１２】また、台材５１の上面形状はカールさせる
形状に合せて形成しておいてもよい。さらに押型４の罫
線刃３の間には押圧用ゴム等を取り付けておき、罫線を
付けると同時に台材５１との間でプラスチック製シート
１を押圧して型付けすることによりカールさせてもよ
い。プラスチック製シートの材質、罫線の種類、罫線間
距離の大・小等によりカールの度合いを変更させてもよ
い。Further, the upper surface shape of the base material 51 may be formed in conformity with the curling shape. Further, a pressing rubber or the like may be attached between the ruled line blades 3 of the pressing die 4, and at the same time when the ruled lines are applied, the plastic sheet 1 is pressed against the base material 51 to be shaped and curled. The degree of curl may be changed depending on the material of the plastic sheet, the type of ruled line, the size of the distance between the ruled lines, and the like.
【００１３】[0013]
［実施例］図３に示すようにプラスチック製シート１と
して厚さ０．２ｍｍ、高さ１００ｍｍ、幅８５ｍｍのポ
リプロピレンシートを用い、予めプラスチック製シート
１に曲率半径Ｒが１５０ｍｍのカールを付けておく。[Example] As shown in FIG. 3, a polypropylene sheet having a thickness of 0.2 mm, a height of 100 mm, and a width of 85 mm is used as the plastic sheet 1, and the plastic sheet 1 is previously curled with a radius of curvature R of 150 mm. .
【００１４】これに深さ０．１ｍｍ、幅０．７ｍｍの罫
線２を２０ｍｍ間隔に形成して、図１に示すプラスチッ
ク製シート１を形成し、図２に示すように折り曲げ内側
のシート面１１が凸面となるように、半折して糊代１２
を他端に接着して筒状とし、最後にこれを開き起こして
四角筒状の組み立てケースを形成した。Ruled lines 2 having a depth of 0.1 mm and a width of 0.7 mm are formed on this at intervals of 20 mm to form a plastic sheet 1 shown in FIG. 1. As shown in FIG. So that it becomes convex
Was bonded to the other end to form a tubular shape, and finally this was opened and raised to form a square tubular assembly case.
【００１５】得られた組み立てケースは各角部がほぼ直
角に仕上がり、中央部の幅Ｗは１９．５ｍｍ〜２１ｍｍ
となった。In the obtained assembly case, each corner is finished almost at right angles, and the width W of the central part is 19.5 mm to 21 mm.
Became.
【００１６】［比較例］これに対して、平坦なポリプロ
ピレンシートを用いて前記実施例と同様、図２に示すよ
うに四角筒状の組み立てケースを形成した結果、角部が
丸くなり、シート面が折り曲げ外側にふくらんで中央部
の幅Ｗは２６ｍｍとなった。[Comparative Example] On the other hand, as in the case of the above-described example, a flat cylindrical polypropylene sheet was used to form a square tubular assembly case, resulting in rounded corners and a sheet surface. Was bulged outward and the width W of the central portion was 26 mm.
【００１７】[0017]
【発明の効果】本発明はプラスチック製シートに、折り
曲げ用の罫線を設けてなる折り曲げ罫線入りシートにお
いて、折り曲げ内側のシート面が凸面となるようにカー
ルさせてなることを特長とする折り曲げ罫線入りシート
であるから、角部が所定角度に仕上がった組み立てケー
スが得られ、従来の様に手で折り返したりする手間もい
らず、外観の良い組み立てケースとなり実用上の利点は
大である。EFFECTS OF THE INVENTION The present invention is a sheet having a folding ruled line in which a folding line is provided on a plastic sheet, which is characterized in that it is curled so that the inner surface of the folding is a convex surface. Since it is a sheet, it is possible to obtain an assembly case in which the corners are finished at a predetermined angle, and there is no need to fold it back by hand as in the conventional case, and the assembly case has a good appearance, which is a great practical advantage.
【図１】本発明の折り曲げ罫線入りシートの一例を示す
断面正面図FIG. 1 is a cross-sectional front view showing an example of a sheet with folded ruled lines of the present invention.
【図２】図１の折り曲げ罫線入りシートにより組み立て
ケースを組み立てる順序を示す断面正面図FIG. 2 is a sectional front view showing an order of assembling an assembly case by the sheet with folding ruled lines of FIG.
【図３】本発明の折り曲げ罫線入りシートを製造する装
置の一例を説明する断面正面図FIG. 3 is a cross-sectional front view illustrating an example of an apparatus for manufacturing a sheet with folded ruled lines according to the present invention.
【図４】同じく折り曲げ罫線入りシートを製造する装置
の他の例を説明する断面正面図FIG. 4 is a sectional front view illustrating another example of an apparatus for manufacturing a sheet with folding ruled lines.
１ プラスチック製シート １１ 折り曲げ内側のシート面 ２ 折り曲げ用の罫線 1 plastic sheet 11 sheet surface inside folding 2 ruled line for folding
Claims (1)
罫線を設けてなる折り曲げ罫線入りシートにおいて、折
り曲げ内側のシート面が凸面となるようにカールさせて
なることを特長とする折り曲げ罫線入りシート。1. A folded ruled sheet comprising a plastic sheet provided with folding ruled lines, wherein the folded inner surface of the folded sheet is curled so that the inner surface of the folded sheet becomes a convex surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22743093A JP3467295B2 (en) | 1993-09-13 | 1993-09-13 | Folded lined sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22743093A JP3467295B2 (en) | 1993-09-13 | 1993-09-13 | Folded lined sheet |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0780926A true JPH0780926A (en) | 1995-03-28 |
| JP3467295B2 JP3467295B2 (en) | 2003-11-17 |
Family
ID=16860736
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP22743093A Expired - Lifetime JP3467295B2 (en) | 1993-09-13 | 1993-09-13 | Folded lined sheet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3467295B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7148423B2 (en) * | 2003-06-19 | 2006-12-12 | Sumitomo Electric Industries, Ltd | Phase split structure of multiphase superconducting cable |
-
1993
- 1993-09-13 JP JP22743093A patent/JP3467295B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7148423B2 (en) * | 2003-06-19 | 2006-12-12 | Sumitomo Electric Industries, Ltd | Phase split structure of multiphase superconducting cable |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3467295B2 (en) | 2003-11-17 |
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