JPH0447610B2 - - Google Patents
Info
- Publication number
- JPH0447610B2 JPH0447610B2 JP13744484A JP13744484A JPH0447610B2 JP H0447610 B2 JPH0447610 B2 JP H0447610B2 JP 13744484 A JP13744484 A JP 13744484A JP 13744484 A JP13744484 A JP 13744484A JP H0447610 B2 JPH0447610 B2 JP H0447610B2
- Authority
- JP
- Japan
- Prior art keywords
- sheet
- cylindrical body
- manufacturing
- take
- view
- 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
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
- B29C53/36—Bending and joining, e.g. for making hollow articles
- B29C53/38—Bending and joining, e.g. for making hollow articles by bending sheets or strips at right angles to the longitudinal axis of the article being formed and joining the edges
- B29C53/48—Bending and joining, e.g. for making hollow articles by bending sheets or strips at right angles to the longitudinal axis of the article being formed and joining the edges for articles of indefinite length, i.e. bending a strip progressively
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shaping Of Tube Ends By Bending Or Straightening (AREA)
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、一枚のプラスチツクシートを折曲げ
て、筒状体を形成する製造方法に係り、特に薄肉
の筒状体の製造に好適な製造方法に関する。Detailed Description of the Invention (Industrial Application Field) The present invention relates to a manufacturing method for forming a cylindrical body by bending a single plastic sheet, and is particularly suitable for manufacturing a thin-walled cylindrical body. Regarding the manufacturing method.
（従来の技術）
一枚のプラスチツクシートを折曲げて筒状体を
成形する製造方法に、進行するシートを成形用ホ
ーマーに沿わせて折曲げ成形し、ついでシートの
両縁部を接合し、引取つた後一定長さに切断する
方法が知られている。(Prior art) A manufacturing method in which a single plastic sheet is bent to form a cylindrical body, the advancing sheet is bent and formed along a forming homer, and then both edges of the sheet are joined. A method is known in which the material is harvested and then cut into a certain length.
（発明が解決しようとする問題点）
しかしながら、上記方法において、折曲げ成形
した筒状体は、通常、引取ロールや引取ベルト等
で挾持して、引取られているが、プラスチツクシ
ートの肉厚が薄いものでは、引取り時に変形した
り、シートに傷が入つたりすることがあり、特に
複雑な断面形状の筒状体ではその傾向が強く、シ
ートの肉厚を厚くせざるを得なくなり、コスト的
に不利益という問題がある。(Problems to be Solved by the Invention) However, in the above method, the bent and formed cylindrical body is usually picked up by being held by a take-up roll or a take-up belt, but the thickness of the plastic sheet is Thin sheets may be deformed or scratched when picked up, and this tendency is particularly strong in cylindrical objects with complex cross-sectional shapes, forcing the sheet to be thicker. There is a problem of cost disadvantage.
（問題点を解決するための手段）
本発明は、一枚のプラスチツクシートから、外
観や寸法精度に優れた筒状体を効率よく形成でき
る製造方法を提供するものであり、その要旨とす
るところは、
一枚のプラスチツクシート１を進行させつつ、
該シートを成形用ホーマー６により折曲げ成形し
て筒状体Ａを製造する方法において、成形した筒
状体の一部に進行方向へ連続した引取用シート片
９を設け、該シート片を挾持して引取り、その後
シート片を除去することを特徴とする筒状体の製
造方法にある。(Means for Solving the Problems) The present invention provides a manufacturing method that can efficiently form a cylindrical body with excellent appearance and dimensional accuracy from a single plastic sheet. While advancing one plastic sheet 1,
In the method of manufacturing the cylindrical body A by bending and forming the sheet using a forming former 6, a sheet piece 9 for taking up that is continuous in the traveling direction is provided in a part of the formed cylindrical body, and the sheet piece is held between the sheets. The method of manufacturing a cylindrical body is characterized in that the sheet piece is removed.
以下、本発明を図面により詳細に説明する。 Hereinafter, the present invention will be explained in detail with reference to the drawings.
第１図は本発明方法を実施するための装置の一
例を示す正面図、第２図は第１図のにおける断
面図、第３図は他の実施例を示した断面図、第４
図は本発明により製造した筒状体の一例を示す斜
視図である。 FIG. 1 is a front view showing an example of an apparatus for implementing the method of the present invention, FIG. 2 is a sectional view of FIG. 1, FIG. 3 is a sectional view showing another embodiment, and FIG.
The figure is a perspective view showing an example of a cylindrical body manufactured according to the present invention.
本発明におけるプラスチツクシートには、熱可
塑性プラスチツクシート、例えばポリ塩化ビニ
ル、ポリスチレン、ポリプロピレン、ポリカーボ
ネート、ポリエステル等の単一又は複合した一枚
のシートを使用する。 The plastic sheet used in the present invention may be a thermoplastic sheet, such as a single sheet or a composite sheet of polyvinyl chloride, polystyrene, polypropylene, polycarbonate, polyester, or the like.
該シートの厚みは、筒状体の大きさ、形状等に
よつて決定するが、通常0.1〜２mm程度が折曲げ
加工のし易さや強度の点から好ましく、本発明で
は薄肉シートでも変形することなく製造できる。 The thickness of the sheet is determined depending on the size, shape, etc. of the cylindrical body, but is preferably about 0.1 to 2 mm from the viewpoint of ease of bending and strength, and in the present invention, even a thin sheet can be deformed. It can be manufactured without any
また、シート自体は透明、半透明又は着色した
ものが使用でき、さらには文字等の印刷を施した
ものも使用できる。 Further, the sheet itself can be transparent, translucent, or colored, and can also be printed with characters or the like.
第１図に示す装置の構成について説明すると、
まずシート１の片面に罫線ロール２，２によつ
て、折曲げ用の溝部を形成する。溝部を設ける位
置や本数は、筒状体の形状によつて決められる
が、第４図に示す筒状体では３箇所形成する。溝
部の形成は罫線ロール以外の方法でもよい。 To explain the configuration of the device shown in Fig. 1,
First, a groove for folding is formed on one side of the sheet 1 using the scoring rolls 2, 2. The position and number of grooves to be provided are determined by the shape of the cylindrical body, but in the cylindrical body shown in FIG. 4, three grooves are formed. The grooves may be formed by a method other than the ruled roll.
次にこのように溝部が設けられたシートは、成
形用ホーマー３、成形用ロール４及び押えロール
６により第２図の断面図に示す三角形々状の筒状
体Ａ、及び引取用シート片９を形成するように折
曲げられる。この間において、シート片を除いた
シートの両縁部は接着剤ノズル５から注入される
接着剤により、完全に固着される。接着剤として
は、通常の感熱接着剤、感圧接着剤等が使用でき
る。固着する方法としては、接着剤の他にヒート
シール法等の手段を用いることもできる。 Next, the sheet provided with the grooves in this way is formed into a triangular cylindrical body A shown in the sectional view of FIG. is bent to form a During this time, both edges of the sheet except for the sheet pieces are completely fixed by the adhesive injected from the adhesive nozzle 5. As the adhesive, ordinary heat-sensitive adhesives, pressure-sensitive adhesives, etc. can be used. As a method for fixing, in addition to adhesives, means such as heat sealing can also be used.
成形用ホーマーや成形用ロールの形状等につい
ては、最終的な筒状体の形状に応じて適宜決める
ことができる。 The shapes of the forming homer and forming rolls can be appropriately determined depending on the final shape of the cylindrical body.
折曲げ成形された筒状体は、次の引取工程で、
第２図の断面図に示すように引取用シート片９の
みが引取ロール７，７により挾持されて筒状体が
引取られる。引取ロール７は、、シートとの滑り
が少ないゴムロールや表面に凹凸を施こした金属
ロールが好適に使用できる。 The bent and formed cylindrical body is then taken over in the next taking process.
As shown in the sectional view of FIG. 2, only the take-off sheet piece 9 is held between take-off rolls 7, 7, and the cylindrical body is taken off. As the take-up roll 7, a rubber roll that hardly slips with the sheet or a metal roll with an uneven surface can be suitably used.
この引取ロールはシート片のみを挾持している
ため、従来のように筒状体が引取ロールによつて
変形したりすることがなくなる。上記引取ロール
は一対でも、複数対使用してもよく、ロールの代
わりに一対のベルトで挾持して引取ることもでき
る。その後、引取用シート片９はカツター８によ
り切断され除去される。この切断を第３図の断面
図に示すように、引き取りロール７と回転刃１１
とを組み合わせたもので引き取りと切断を同時に
行なうこともできる。 Since the take-up rolls only hold the sheet pieces, the cylindrical body is not deformed by the take-up rolls as in the conventional case. One pair or a plurality of pairs of the above-mentioned take-up rolls may be used, and the take-up may be carried out by being held between a pair of belts instead of the rolls. Thereafter, the take-up sheet piece 9 is cut by the cutter 8 and removed. As shown in the cross-sectional view of FIG.
It is also possible to take over and cut at the same time using a combination of these.
シート片９が除去された筒状体は、次の切断工
程（図示されていない）で所望の長さに切断され
製品とされる。 The cylindrical body from which the sheet piece 9 has been removed is cut into a desired length in the next cutting process (not shown) to produce a product.
（発明の効果）
上述したように、本発明の方法によれば、傷入
りや変形のない外観や寸法精度に優れた筒状体を
形成でき、また筒状体の製造速度を増すことがで
きるという利点を有し、特に肉厚の薄い筒状体の
製造に適するものである。(Effects of the Invention) As described above, according to the method of the present invention, a cylindrical body with excellent appearance and dimensional accuracy without scratches or deformation can be formed, and the manufacturing speed of the cylindrical body can be increased. This has the advantage that it is particularly suitable for manufacturing thin-walled cylindrical bodies.
第１図は本発明方法を実施するための装置の一
例を示す正面図、第２図は第１図のにおける断
面図、第３図は他の実施例を示した断面図、第４
図は本発明により製造した筒状体の一例を示す斜
視図である。
１……プラスチツクシート、Ａ……筒状体、６
……成形用ホーマー、９……引取用シート片。
FIG. 1 is a front view showing an example of an apparatus for carrying out the method of the present invention, FIG. 2 is a sectional view of FIG. 1, FIG. 3 is a sectional view showing another embodiment, and FIG.
The figure is a perspective view showing an example of a cylindrical body manufactured according to the present invention. 1...Plastic sheet, A...Cylindrical body, 6
... Homer for molding, 9 ... Sheet piece for collection.
Claims (1)
つ、該シートを成形用ホーマー６により折曲げ成
形して筒状体Ａを製造する方法において、成形し
た筒状体の一部に進行方向へ連続した引取用シー
ト片９を設け、該シート片を挾持して引取り、そ
の後シート片を除去することを特徴とする筒状体
の製造方法。1. In a method of manufacturing a cylindrical body A by bending and forming a sheet of plastic sheet 1 with a forming former 6 while advancing, a portion of the formed cylindrical body is provided with continuous pulling in the direction of travel. A method for manufacturing a cylindrical body, characterized in that a sheet piece 9 is provided, the sheet piece is held and taken, and then the sheet piece is removed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13744484A JPS6116831A (en) | 1984-07-03 | 1984-07-03 | Manufacture of cylindrical body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13744484A JPS6116831A (en) | 1984-07-03 | 1984-07-03 | Manufacture of cylindrical body |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6116831A JPS6116831A (en) | 1986-01-24 |
| JPH0447610B2 true JPH0447610B2 (en) | 1992-08-04 |
Family
ID=15198761
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13744484A Granted JPS6116831A (en) | 1984-07-03 | 1984-07-03 | Manufacture of cylindrical body |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6116831A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5700079B2 (en) * | 2013-07-02 | 2015-04-15 | 株式会社オートネットワーク技術研究所 | Vehicle exterior material manufacturing method |
-
1984
- 1984-07-03 JP JP13744484A patent/JPS6116831A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6116831A (en) | 1986-01-24 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |