JPH01271010A - Method for forming by bending composite stock - Google Patents
Method for forming by bending composite stockInfo
- Publication number
- JPH01271010A JPH01271010A JP10117888A JP10117888A JPH01271010A JP H01271010 A JPH01271010 A JP H01271010A JP 10117888 A JP10117888 A JP 10117888A JP 10117888 A JP10117888 A JP 10117888A JP H01271010 A JPH01271010 A JP H01271010A
- Authority
- JP
- Japan
- Prior art keywords
- bending
- hot water
- forming
- bender
- die
- 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
- 239000002131 composite material Substances 0.000 title claims abstract description 25
- 238000005452 bending Methods 0.000 title claims abstract description 24
- 238000000034 method Methods 0.000 title claims abstract description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 22
- 239000011347 resin Substances 0.000 abstract description 9
- 229920005989 resin Polymers 0.000 abstract description 9
- 238000010438 heat treatment Methods 0.000 abstract description 8
- 239000000463 material Substances 0.000 abstract description 7
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 abstract description 5
- 239000007788 liquid Substances 0.000 abstract description 3
- 229920003023 plastic Polymers 0.000 abstract 2
- 230000002087 whitening effect Effects 0.000 description 12
- 238000000465 moulding Methods 0.000 description 9
- 239000011248 coating agent Substances 0.000 description 5
- 238000000576 coating method Methods 0.000 description 5
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 3
- 229920002554 vinyl polymer Polymers 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000004566 building material Substances 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 239000002918 waste heat Substances 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
この発明は、複合材の屈曲成形方法に関するものである
。さらに詳しくは、この発明は、塩化ビニル樹脂被覆鋼
板等の複合材を屈曲成形し、雨とい、その他建材等を製
造するにあたり、屈曲部の白化を防止し、しかも生産性
の高い成形を行うことができる複合材の屈曲成形方法に
関するものである。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a method for bending and forming composite materials. More specifically, the present invention aims to prevent whitening of bent portions and to perform highly productive forming when manufacturing rain gutters and other building materials by bending and forming composite materials such as vinyl chloride resin-coated steel sheets. The present invention relates to a method for bending and forming composite materials.
（従来の技術）
従来より、雨とい、その他建材等に用いることのできる
加工性の良好な複合材の屈曲成形においては、上刃と下
刃からなるペングーとダイで屈曲成形することが行われ
てきている。また、この方法において硬質塩化ビニル樹
脂等によって被覆した複合材の屈曲による白化を防止す
る方法として、ペングーとダイの上刃と下刃を電熱ヒー
タで予熱し、屈曲時に複合材のペングーとの接触部を熱
し゛て塩化ビニル等の被覆材を軟化させる方法が行われ
てきている。(Prior art) Conventionally, bending forming of composite materials with good workability that can be used for rain gutters and other building materials has been carried out using a pengu and die consisting of an upper blade and a lower blade. It's coming. In addition, in this method, as a method to prevent whitening due to bending of the composite material coated with hard vinyl chloride resin, etc., the upper and lower blades of the pengu and die are preheated with an electric heater, so that the composite material does not come into contact with the pengu when bent. A method has been used to soften coating materials such as vinyl chloride by heating the parts.
たとえば、このような白化防止法としては、第３図に示
したように、電熱し−タ（ア）でペングーの上刃（イ）
とダイの下刃（つ）を予熱して複合材（工）の屈曲部（
オ）を熱しつつ折曲げるものが知られている。For example, to prevent whitening, as shown in Figure 3, use an electric heater (A) to heat the upper blade (A) of the Pengu.
Preheat the lower blade of the die and bend the composite material.
There is a known method that bends (e) while heating it.
この方法は、たとえば第４図に示したスチール芯（力）
の表面に硬化ビニル樹脂等（キ）で被覆した加工性の良
好な複合材（工）を第５図に示したような雨といに成形
するに際し、屈曲部（り）（ゲ）等において硬化ビニル
樹脂等（キ）の被覆材の白化を防止する方法として知ら
れているものである。This method can be applied, for example, to the steel core (force) shown in Figure 4.
When molding a composite material with good workability, the surface of which is coated with hardened vinyl resin, etc., into a rain gutter as shown in Figure 5, hardening is required at bends, etc. This method is known as a method for preventing whitening of coating materials such as vinyl resin (g).
しかしながら、この従来の複合材屈曲部の白化防止法に
おいては、複合材（１）の表面状態により、ベンダーの
上刃（イ）およびダイ下刃（つ）の密着性が均一でない
ために熱伝達を均一に行うことができず、熱伝達効率は
悪く、しかも、ベンダーが複合材に接触する部分だけの
わずかな範囲のみが集中して焦されるために、屈曲部（
オ）で充分な被覆材の軟化が得られず、白化が避けられ
ないという問題があった。However, in this conventional method for preventing whitening of bent parts of composite materials, heat transfer occurs because the adhesion between the upper blade (a) of the bender and the lower blade (2) of the die is not uniform due to the surface condition of the composite material (1). heat transfer efficiency is poor, and the bending area (
In (e), there was a problem in that sufficient softening of the coating material could not be obtained and whitening was unavoidable.
（発明が解決しようとする課題）
この発明は、以上の通りの事情に鑑みてなされたもので
あり、上記した通りの従来の複合材の屈曲成形において
避けられなかった屈曲部の白化を防止し、高効率での成
形を行うという課題を解決することを目的としている。(Problems to be Solved by the Invention) This invention has been made in view of the above circumstances, and is intended to prevent the whitening of bent portions that is unavoidable in the conventional bending molding of composite materials as described above. The aim is to solve the problem of performing molding with high efficiency.
（課題を解決するための手段）
この発明は、上記の目的を実現するために、屈曲部を湯
槽の循環熱湯に浸して屈曲成形することを特徴とする複
合材の屈曲成形における屈曲部の白化防止成形法を提供
する。(Means for Solving the Problems) In order to achieve the above object, the present invention provides whitening of bent portions in bending forming of a composite material, which is characterized in that bending is performed by immersing the bent portions in circulating hot water in a hot water bath. Provides a prevention molding method.
（作 用）
この発明の方法においては、一定の形状に溝を刻んだダ
イ下刃の溝部を湯槽とし、これに熱湯を循環させ、複合
材を浸し、ペングー上刃を押しつけて屈曲成形する。(Function) In the method of the present invention, the groove of the lower die blade cut into a certain shape is used as a hot water tank, hot water is circulated through this, the composite material is immersed, and the upper blade of the pengu is pressed against it to bend and form it.
このために、屈曲成形は、従来の方法に比べて、熱湯か
らの熱伝達が均一で効率的であり、しかも複合材屈曲部
の広い範囲におよぶ加熱ができる。For this reason, bend forming provides more uniform and efficient heat transfer from hot water than conventional methods, and allows for heating over a wide range of composite bends.
硬質塩化ビニル樹脂等の被覆材を均一にしかも適度に軟
化させ、ベンダー押圧による荷重による歪みと熱応力等
を解消し、屈曲時の白化を防止することができる。It is possible to uniformly and appropriately soften the covering material such as hard vinyl chloride resin, eliminate distortion and thermal stress caused by the load caused by bending, and prevent whitening when bent.
また、成形における屈曲率を、ダイの溝形状に制約され
ることなくベンダーの下方向の静止位置の選択によって
調整でき、生産性は極めて高いものとなる。さらに熱湯
を加熱媒体とすることで、加熱温度の調整が極めて容易
で、しかも廃熱利用等による熱効率をも良好とすること
ができる。Furthermore, the bending rate during molding can be adjusted by selecting the downward resting position of the bender without being restricted by the groove shape of the die, resulting in extremely high productivity. Furthermore, by using hot water as the heating medium, it is extremely easy to adjust the heating temperature, and the thermal efficiency can also be improved by utilizing waste heat.
（実施例）
以下実施例として示した図面に沿って、この発明の複合
材の屈曲成形における屈曲部の白化防止法について説明
する。(Example) A method for preventing whitening of a bent portion in bending molding of a composite material according to the present invention will be described below with reference to the drawings shown as an example.
第１図および第２図は、この発明の方法の一例を示して
いる。第１図に示したようにベンダー（１）の下方に、
複合材（２）をダイ（３）の溝部（４）に対応して配置
する。このベンダー（１）を矢印で示した下方に押圧す
ることにより複合材（２）を折曲げる。この過程におい
て屈曲部（５）は、溝部（４）を循環する熱湯（６）の
中に浸して加熱する。この加熱により複合材（２）表面
の樹脂被覆材を軟化させる。熱湯（６）の液面（７）は
、屈曲部（５）の最下点よりも上部にあるようにする。1 and 2 show an example of the method of the invention. As shown in Figure 1, below the bender (1),
The composite material (2) is placed in correspondence with the groove (4) of the die (3). The composite material (2) is bent by pressing the bender (1) downward as indicated by the arrow. In this process, the bent part (5) is heated by immersing the groove part (4) in circulating hot water (6). This heating softens the resin coating material on the surface of the composite material (2). The liquid level (7) of the hot water (6) should be above the lowest point of the bent part (5).
こうすることにより、複合材（２）を均一に加熱するこ
とができ、屈曲部（５）周辺を広い範囲で加熱すること
ができる。By doing so, the composite material (2) can be heated uniformly, and the periphery of the bent portion (5) can be heated in a wide range.
ダイ（３）の溝部（４）は湯槽の役割を果たすことにな
る。The groove (4) of the die (3) will serve as a tundish.
第２図は、この発明の方法の熱湯循環について例示した
ものである。この図から明らかなように、熱湯（６）は
、ヒータ（８）で適温に保たれ、ボン１（９）で一定速
度で湯槽としてのダイ（４）の溝部（５）に循環する。FIG. 2 illustrates the hot water circulation of the method of this invention. As is clear from this figure, the hot water (6) is kept at an appropriate temperature by the heater (8) and circulated at a constant speed by the bong 1 (9) into the groove (5) of the die (4) serving as a hot water tank.
もちろん、ヒータ（８）にいては、熱湯の廃熱等を利用
するようにしてもよい。Of course, the heater (8) may utilize waste heat of hot water or the like.
ベンダー（１）の静止位置の制御は、ＮＣベンダー、そ
の他についてその駆動方法も含めて、従来公知の任意の
ものを用いることができる。ＮＣベンダーを使用する場
合にもベンダーの下止点調整を行い、非接触伝熱ができ
る。熱湯の温度制御の手段も、適宜なセンサとヒータと
の組合わせによって容易に行うことができる。To control the static position of the bender (1), any conventionally known method can be used, including an NC bender and other driving methods. Even when using an NC bender, the bottom end point of the bender can be adjusted to enable non-contact heat transfer. The temperature of hot water can also be easily controlled by combining an appropriate sensor and heater.
もちろん、この発明は以上の例によって限定されるもの
ではない、ベンダーやダイの構造、さらに熱湯の加熱循
環機構等の細部については、様々なｇ様が可能であるこ
とはいうまでもない。Of course, the present invention is not limited to the above examples, and it goes without saying that various modifications can be made to details such as the structure of the bender and die, and the heating circulation mechanism for hot water.
（発明の効果）
以上詳しく説明した通り、この発明の屈曲成形方法によ
り、硬質ビニル樹脂等の樹脂被覆材の均−１かつ効率的
な軟化処理により、屈曲による白化を防ぐことが可能と
なる。また、ＮＣベングーの使用時にも、ベンダー下止
点調整を行うことにより非接触伝熱が可能であって、高
い生産性とともに、優れた白化防止効果が得られる。(Effects of the Invention) As explained in detail above, the bending molding method of the present invention makes it possible to prevent whitening due to bending by uniformly and efficiently softening the resin coating material such as hard vinyl resin. Furthermore, even when using an NC Bengu, non-contact heat transfer is possible by adjusting the bender bottom end point, and high productivity and excellent whitening prevention effects can be obtained.
第１図および第２図は、この発明の方法を例示した正断
面図と側断面図である。
第３図は、従来の白化防止成形法を示した正断面図であ
る。
第４図は、通常の複合材を示した断面図である。
第５図は屈曲成形により製造される成形品の一例として
雨といを示した断面図である。
１・・・ベンダー ２・・・複合材３・・・ダ イ
４・・・渭 部５・・・屈曲部 ６・・
・熱 湯７・・・液 面 ８・・・ｂ−タ９・・
・ポンプ
代理人 弁理士 西 澤 利 失笑 １
図
第 ３ 図
ウ 耳
第 ４ 図
エ
キ
第 ５ 図
ケ り1 and 2 are a front sectional view and a side sectional view illustrating the method of the present invention. FIG. 3 is a front sectional view showing a conventional anti-whitening molding method. FIG. 4 is a cross-sectional view of a typical composite material. FIG. 5 is a sectional view showing a rain gutter as an example of a molded product manufactured by bending molding. 1...Bender 2...Composite material 3...Die 4...Wing part 5...Bending part 6...
・Hot water 7...liquid level 8...b-ta 9...
・Pump agent Patent attorney Toshi Nishizawa Smile 1
Figure 3 C Ear Figure 4 Exhaust Figure 5
Claims (2)
とを特徴とする複合材の屈曲成形方法。(1) A method for bending and forming a composite material, which comprises immersing the bent portion in circulating hot water in a hot water tank to form the bend.
の複合材の屈曲成形方法。(2) The method for bending and forming a composite material according to claim (1), wherein hot water is circulated through the die forming section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63101178A JP2527785B2 (en) | 1988-04-23 | 1988-04-23 | Bending molding method for composite materials |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63101178A JP2527785B2 (en) | 1988-04-23 | 1988-04-23 | Bending molding method for composite materials |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01271010A true JPH01271010A (en) | 1989-10-30 |
| JP2527785B2 JP2527785B2 (en) | 1996-08-28 |
Family
ID=14293742
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63101178A Expired - Lifetime JP2527785B2 (en) | 1988-04-23 | 1988-04-23 | Bending molding method for composite materials |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2527785B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114178361A (en) * | 2021-10-26 | 2022-03-15 | 中铁十六局集团第五工程有限公司 | Bent pipe preparation method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57103739A (en) * | 1980-12-20 | 1982-06-28 | Toyota Motor Corp | Forming method for painted metallic plate |
| JPS6020192A (en) * | 1983-07-15 | 1985-02-01 | 株式会社東芝 | Controller for output from reactor |
-
1988
- 1988-04-23 JP JP63101178A patent/JP2527785B2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57103739A (en) * | 1980-12-20 | 1982-06-28 | Toyota Motor Corp | Forming method for painted metallic plate |
| JPS6020192A (en) * | 1983-07-15 | 1985-02-01 | 株式会社東芝 | Controller for output from reactor |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114178361A (en) * | 2021-10-26 | 2022-03-15 | 中铁十六局集团第五工程有限公司 | Bent pipe preparation method |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2527785B2 (en) | 1996-08-28 |
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