JPH0218229B2 - - Google Patents
Info
- Publication number
- JPH0218229B2 JPH0218229B2 JP58098585A JP9858583A JPH0218229B2 JP H0218229 B2 JPH0218229 B2 JP H0218229B2 JP 58098585 A JP58098585 A JP 58098585A JP 9858583 A JP9858583 A JP 9858583A JP H0218229 B2 JPH0218229 B2 JP H0218229B2
- Authority
- JP
- Japan
- Prior art keywords
- side plate
- plate
- synthetic resin
- overlapping
- case
- 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.)
- Expired - Lifetime
Links
- 239000000463 material Substances 0.000 claims description 19
- 229920003002 synthetic resin Polymers 0.000 claims description 18
- 239000000057 synthetic resin Substances 0.000 claims description 18
- 238000000034 method Methods 0.000 claims description 12
- 238000004519 manufacturing process Methods 0.000 claims description 11
- 230000003014 reinforcing effect Effects 0.000 claims description 8
- 238000003466 welding Methods 0.000 claims description 8
- 238000010438 heat treatment Methods 0.000 claims description 7
- 238000004080 punching Methods 0.000 claims description 4
- 239000004020 conductor Substances 0.000 claims description 3
- 239000012777 electrically insulating material Substances 0.000 claims description 2
- 238000005520 cutting process Methods 0.000 claims 2
- 238000002844 melting Methods 0.000 description 4
- 230000008018 melting Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 229920001342 Bakelite® Polymers 0.000 description 1
- 229910001369 Brass Inorganic materials 0.000 description 1
- 239000004637 bakelite Substances 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000002932 luster Substances 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
Landscapes
- Shaping Of Tube Ends By Bending Or Straightening (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
- Making Paper Articles (AREA)
Description
【発明の詳細な説明】
この発明は、例えばめがねケースの如き扁平角
筒形で一端が開口する軟質合成樹脂ケースの製造
方法の改良に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in a method for manufacturing a soft synthetic resin case, such as an eyeglass case, which has a flat prismatic cylindrical shape and is open at one end.
この種ケースの従来の製造方法は、ケースを展
開した状態にシートから打抜き折目筋も施すが、
側板部を対向する側板部と重ね合わせて溶着一体
化するものであるため、対向する両側板部を重ね
合わすには打抜かれた展開状態の素材を箱形に保
持するための中型と外型を必要とし、そのため溶
接装置が複雑となる。 The conventional manufacturing method for this type of case is to punch out creases from a sheet while the case is unfolded.
Since the side panels are overlapped with the opposing side panels and welded together, in order to overlap the opposing side panels, a medium and outer mold are required to hold the punched and unfolded material in a box shape. This makes the welding equipment complicated.
この発明は扁平な軟質合成樹脂ケース製造上の
上記問題点を解決したもので、その目的とすると
ころは、ケースを展開した状態に打抜いた素材か
らケースにする工程に、内型と外型からなる保形
金型を必要としない合成樹脂ケースの製法を提供
するにある。 This invention solves the above-mentioned problems in manufacturing flat soft synthetic resin cases.The purpose of this invention is to create an inner mold and an outer mold in the process of making the case from the material punched out in the unfolded state. To provide a method for manufacturing a synthetic resin case that does not require a shape-retaining mold.
又この発明の他の目的とするところは、高周波
加熱による折目筋形成時に折目筋付近に加熱によ
る軟化乃至溶融による不体裁な光沢が生じること
なき合成樹脂ケースとするにある。 Another object of the present invention is to provide a synthetic resin case that does not produce an unsightly luster near the crease lines due to softening or melting due to heating when the crease lines are formed by high-frequency heating.
この発明の詳細を添付図面に示す実施例に基づ
いて以下に説明する。 The details of this invention will be explained below based on embodiments shown in the accompanying drawings.
第１図においてＡは合成樹脂からなる扁平なケ
ースとなすための、軟質合成樹脂シートから打抜
かれ展開状態のケース素材であり、この素材Ａは
正面板部１と底板部２、および背面板部３をその
順に一体に連成し、各板部１，２，３の両側縁に
は側板部４，５，６が連成してある。 In Fig. 1, A is a case material punched out of a soft synthetic resin sheet and in an expanded state to form a flat case made of synthetic resin. 3 are integrally connected in that order, and side plate parts 4, 5, 6 are connected to both side edges of each plate part 1, 2, 3.
底板部２における側板部５は三角片とした方が
あとの溶着工程での納まりがよい。又側板部５を
三角片とした場合には正面板部１や背面板部３の
方の側板部４，６も三角片に対応して側端縁を傾
斜させる。 The side plate portions 5 of the bottom plate portion 2 may be formed into triangular pieces for better fit in the subsequent welding process. Further, when the side plate portion 5 is formed into a triangular piece, the side plate portions 4 and 6 of the front plate portion 1 and the rear plate portion 3 also have their side edges inclined in accordance with the triangular piece.
又打抜きと同時に各板部１，２，３とその側板
部４，５，６の境界部に高周波等による加熱下で
折目筋７が施こされる（以下第１工程）。 Simultaneously with punching, creases 7 are formed at the boundaries between the plate parts 1, 2, 3 and their side plate parts 4, 5, 6 under heating by high frequency or the like (hereinafter referred to as the first step).
得られた上記素材Ａは第２図のように底板部２
を中央にして２つ折りする（第２工程）。 The obtained material A is used as the bottom plate part 2 as shown in FIG.
Fold in half with the center in the center (second step).
次いで２つ折りした素材Ａにおける重なり合う
側板部４，６を巾方向中央部で溶断する（第３工
程）。溶断は左右の側板部を同時に行うが、第２
図では一方の側板部のみ溶断して示した。同図に
おいて８は溶断した部分、９は溶断による捨てら
れる部分を示す。 Next, the overlapping side plate portions 4 and 6 of the folded material A are melt-cut at the center in the width direction (third step). The left and right side panels are melted at the same time, but the second
In the figure, only one side plate is shown as being fused and cut. In the figure, 8 indicates a portion that has been fused and 9 indicates a portion that is discarded due to the fusion.
第２図において上下に重なり合う左右の側板部
を溶断すると、正面板部１及び背面板部３と底板
部２間には折目が存在しないので、底板部付近で
は第１図の展開状態に復元しようとし、且つ正面
板部や背面板部とその側板部間には折目筋７があ
るので、前記溶断と同時に自然に第３図のように
扁平角形のケースの状態となる。１０は溶断接続
部分での対向する側板部４，６のつき合わされた
部分を示す。 When the left and right side plates that overlap vertically in Fig. 2 are cut by melting, there is no crease between the front plate 1, the back plate 3, and the bottom plate 2, so the area near the bottom plate is restored to the unfolded state shown in Fig. 1. Since there are crease lines 7 between the front plate, the back plate, and the side plates, the case naturally becomes a flat rectangular case as shown in FIG. 3 at the same time as the melting. Reference numeral 10 indicates a portion where the opposing side plate portions 4 and 6 are brought into contact with each other at the fusing connection portion.
上記溶断した接続のみでは接続部分が外力によ
り離断するおそれがあるので、第４図のように、
連結する側板部４，６の表面にこれと同形同材質
の補強シート１１を重ねて溶着一体化して成品と
する、（第４工程）。１２は溶着を強固にするため
の凹凸条を示す。又補強シート１１の溶着時、溶
着の前に底板部２の側板部５を、溶断接続された
側板部４，６の端の空所１３に指先を使用して挿
入し補強シート１１で押えるとにより底部両側に
生じるおそれがある切込みのような隙間を皆無に
することができる。 If the above-mentioned fused connection is used alone, there is a risk that the connected part may be separated by external force, so as shown in Figure 4,
A reinforcing sheet 11 of the same shape and material is overlaid on the surfaces of the side plate parts 4 and 6 to be connected and welded together to form a finished product (fourth step). Reference numeral 12 indicates a concavo-convex strip for strengthening the welding. In addition, when welding the reinforcing sheet 11, before welding, insert the side plate 5 of the bottom plate 2 into the space 13 at the end of the fused and connected side plates 4 and 6 using your fingertips and press it with the reinforcing sheet 11. This makes it possible to completely eliminate gaps such as cuts that may occur on both sides of the bottom.
この発明は上記したような構成であり、この合
成樹脂ケースの製造方法は、堅型扁平角筒形のケ
ースの展開状素材を軟質合成樹脂シートから打抜
くと共に各側板部の根元部に加熱下で折目筋を施
こす第１工程と、打抜いた素材を底板部を中央に
して２つ折りする第２工程、２つ折りに重なり合
う側板部を巾方向中央で溶断する第３工程と、最
後に溶断により連続状態となる側板部外面に樹脂
シートを重ねて溶着一体化する第４工程とからな
るもので、この方法によれば打抜かれたケース素
材を２つ折りした状態で重なり合う側板部を巾方
向中央部で溶断すると同時に堅型扁平の有底角筒
形となり、従来のこの種ケース製造におけるよう
な箱形にするための内型や外型を全く必要とせ
ず、且つ製造装置もきわめて簡単となり、単位時
間の生産量も大となり、勢い合成樹脂ケースを低
コストで提供し得るという効果がある。 The present invention has the above-described configuration, and the method for manufacturing this synthetic resin case includes punching out the expanded material of the hard flat rectangular cylindrical case from a soft synthetic resin sheet, and applying heat to the base of each side plate. The first step is to create crease lines, the second step is to fold the punched material in half with the bottom plate in the center, the third step is to melt and cut the side panels that overlap the two folds at the center of the width, and finally, This method consists of a fourth step of stacking the resin sheet on the outer surface of the side plate, which is made continuous by fusing, and welding and integrating it. According to this method, the punched case material is folded in half and the overlapping side plates are folded in the width direction. As soon as it melts in the center, it becomes a rigid, flat, rectangular cylinder with a bottom, and there is no need for an inner or outer mold to create a box shape, which is required in conventional case manufacturing, and the manufacturing equipment is also extremely simple. , the production volume per unit time is also large, and the effect is that synthetic resin cases can be provided at low cost.
又この種合成樹脂ケースにおいて折目筋７を加
熱下で形成すると折目筋付近が軟化乃至溶融して
光沢を生じ商品価値を著しく低下するものである
が、第６図に示すように折目筋を施す部分でケー
ス素材の裏面にベークライト等の電気絶縁材から
なる板片１３を介在し、且つ前記板片１３の両側
に真ちゆうのような熱良導材からなる板片１４を
配して高周波加熱により折目筋７を形成すること
により、高周波の上部電極１５と下部電極１６間
に発生する熱は電気絶縁されることによつて半は
抑制され且つ発生した熱は熱良導板片１４に吸収
されるので折目筋付近の熱は速やかに消失し、以
て合成樹脂シートにおける加熱を望まぬ部分の、
過熱に起因する軟化乃至溶融を良好に防止できて
この部分に不体裁な光沢が生じることがないとい
う効果がある。 In addition, when the crease line 7 is formed under heating in this type of synthetic resin case, the vicinity of the crease line softens or melts and becomes glossy, which significantly reduces the commercial value. A plate piece 13 made of an electrically insulating material such as Bakelite is interposed on the back side of the case material at the part where the striations are applied, and plate pieces 14 made of a thermally conductive material such as brass are arranged on both sides of the plate piece 13. By forming the crease line 7 by high frequency heating, the heat generated between the high frequency upper electrode 15 and the lower electrode 16 is electrically insulated and partially suppressed, and the generated heat is transferred to the heat conductive plate. Since the heat is absorbed by the sheet 14, the heat near the creases disappears quickly, and the heat in the areas of the synthetic resin sheet that is not desired to be heated is
The effect is that softening or melting caused by overheating can be well prevented, and that unsightly gloss will not occur in this area.
図面は本発明の合成樹脂ケースの製造方法の実
施例を示すもので、第１図は軟質合成樹脂シート
から打抜かれた合成樹脂ケース素材の一例の展開
斜視図、第２図は重なり合う側板部を溶断する工
程の斜視図、第３図は前記溶断と同時にケース形
となつた斜視図、第４図は完成ケースの斜視図、
第５図は同上要部の拡大断面図、第６図は高周波
による折目筋形成の工程の断面図である。
Ａ…素材、１…正面板部、２…底板部、３…背
面板部、４，５，６…側板部、７…折目筋、８…
溶断部、１１…補強シート、１３…絶縁材からな
る板片、１４…熱良導材からなる材片。
The drawings show an embodiment of the method for manufacturing a synthetic resin case of the present invention. Fig. 1 is a developed perspective view of an example of a synthetic resin case material punched from a soft synthetic resin sheet, and Fig. 2 shows overlapping side plate parts. A perspective view of the process of fusing, FIG. 3 is a perspective view of the case forming at the same time as the fusing, and FIG. 4 is a perspective view of the completed case.
FIG. 5 is an enlarged sectional view of the essential parts of the same, and FIG. 6 is a sectional view of the process of forming crease lines using high frequency waves. A...Material, 1...Front plate part, 2...Bottom plate part, 3...Back plate part, 4, 5, 6...Side plate part, 7...Fold line, 8...
Fused portion, 11... Reinforcement sheet, 13... Plate piece made of insulating material, 14... Piece made of heat conductive material.
Claims (1)
の順に連成し、前記各板部の両側縁には、側板部
をそれぞれ連成した素材を軟質合成樹脂シートか
ら打抜くと共に前記各板部と側板部の境界に加熱
下で折目筋を施こす第１工程と、前記打抜いた素
材をその底板部を中央にして２つ折りし重ね合わ
せる第２工程と、前記２つ折りし重ね合わせた素
材における重なり合う側板部を巾方向中央部で溶
断する第３工程と、前記溶断し連結状態の側板部
外面に補強シートを重ね且つ底板部両側の側板部
を前記溶断連結する側板部の方に挿入してこれら
の側板部と補強シートを溶着一体する第４工程と
からなることを特徴とする合成樹脂ケースの製造
方法。 ２ ケースの正面板部、底板部、背面板部をその
順に連成し、前記各板部の両側縁には側板部をそ
れぞれ連成した素材を軟質合成樹脂シートから打
抜く第１工程と、前記各板部と側板部の境界の折
目筋を施こす部分で素材裏面に電気絶縁材からな
る板片とその両側に熱良導材からなる板片を配し
て前記境界に高周波加熱により折目筋を施こす第
２工程と、前記打抜いた素材をその底板部を中央
にして２つ折りし重ね合わせる第３工程と、前記
２つ折りし重ね合わせた素材における重なり合う
側板部を巾方向中央部で溶断する第４工程と、前
記溶断し連結状態の側板部外面に補強シートを重
ね且つ底板部両側の側板部を前記溶断連結する側
板部の方に挿入してこれらの側板部と補強シート
を溶着一体する第５工程とからなることを特徴と
する合成樹脂ケースの製造方法。[Scope of Claims] 1. The front plate, the bottom plate, and the back plate of the case are connected in this order, and on both side edges of each plate, the material from which the side plates are connected is made of a soft synthetic resin sheet. A first step of punching out and creating crease lines under heating at the boundaries between each of the plate parts and the side plate parts, and a second step of folding the punched material in half with the bottom plate part in the center and overlapping them; A third step of fusing and cutting the overlapping side plate portions of the two-folded and stacked materials at the center in the width direction, and superimposing a reinforcing sheet on the outer surface of the side plate portions in the fusing and connected state, and fusing and connecting the side plate portions on both sides of the bottom plate portion. A method for manufacturing a synthetic resin case, comprising a fourth step of inserting the reinforcing sheet into the side plate portions and welding the side plate portions and the reinforcing sheet together. 2. A first step of punching out a material from a soft synthetic resin sheet, in which the front plate part, bottom plate part, and back plate part of the case are connected in that order, and side plate parts are connected to both side edges of each plate part, respectively; A plate piece made of an electrically insulating material and a plate piece made of a heat conductive material are arranged on the back side of the material at the part where the crease line is formed at the boundary between each plate part and the side plate part, and the boundary is heated by high frequency heating. A second step of creating crease lines, a third step of folding the punched material in half with the bottom plate in the center and overlapping it, and folding the overlapping side plate portions of the two-folded and overlapping material into the center in the width direction. a fourth step of fusing and cutting the reinforcing sheet at the melt-cut and connected side plate parts, and inserting the side plate parts on both sides of the bottom plate part toward the side plate parts to be melt-cut and connected, and bonding these side plate parts and the reinforcing sheet. A method for manufacturing a synthetic resin case, comprising a fifth step of welding and integrating the two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58098585A JPS59222319A (en) | 1983-05-31 | 1983-05-31 | Manufacture of synthetic resin case |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58098585A JPS59222319A (en) | 1983-05-31 | 1983-05-31 | Manufacture of synthetic resin case |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59222319A JPS59222319A (en) | 1984-12-14 |
| JPH0218229B2 true JPH0218229B2 (en) | 1990-04-24 |
Family
ID=14223722
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58098585A Granted JPS59222319A (en) | 1983-05-31 | 1983-05-31 | Manufacture of synthetic resin case |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59222319A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0741906U (en) * | 1994-07-18 | 1995-07-21 | オプトニクス株式会社 | Push-button switch device for vending machines |
-
1983
- 1983-05-31 JP JP58098585A patent/JPS59222319A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0741906U (en) * | 1994-07-18 | 1995-07-21 | オプトニクス株式会社 | Push-button switch device for vending machines |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59222319A (en) | 1984-12-14 |
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