JPH0571030B2 - - Google Patents
Info
- Publication number
- JPH0571030B2 JPH0571030B2 JP62228155A JP22815587A JPH0571030B2 JP H0571030 B2 JPH0571030 B2 JP H0571030B2 JP 62228155 A JP62228155 A JP 62228155A JP 22815587 A JP22815587 A JP 22815587A JP H0571030 B2 JPH0571030 B2 JP H0571030B2
- Authority
- JP
- Japan
- Prior art keywords
- tube
- resin
- material tube
- resin layer
- coating
- 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
- 239000011347 resin Substances 0.000 claims description 60
- 229920005989 resin Polymers 0.000 claims description 60
- 239000011248 coating agent Substances 0.000 claims description 32
- 238000000576 coating method Methods 0.000 claims description 32
- 239000000463 material Substances 0.000 claims description 32
- 230000001681 protective effect Effects 0.000 claims description 20
- 238000000034 method Methods 0.000 claims description 10
- 239000004575 stone Substances 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 description 8
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 4
- 238000005452 bending Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000007654 immersion Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 229910001209 Low-carbon steel Inorganic materials 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000001879 gelation Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
Landscapes
- Protection Of Pipes Against Damage, Friction, And Corrosion (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
Description
【発明の詳細な説明】
−産業上の利用分野−
本発明は自動車用チユーブに関し、特に、跳ね
石対策用保護樹脂層を部分的に被覆する自動車用
部分コーテイングチユーブの製造方法に関する。DETAILED DESCRIPTION OF THE INVENTION -Field of Industrial Application- The present invention relates to a tube for an automobile, and more particularly to a method for manufacturing a partially coated tube for an automobile, which partially coats the tube with a protective resin layer for protection against flying stones.
−従来の技術−
一般に、ブレーキチユーブ等の自動車用チユー
ブにおいては、表面をフツ素樹脂コートした亜鉛
メツキ軟鋼チユーブが用いられる場合があるが、
このような軟鉄チユーブが自動車の走行中に跳ね
石で傷付けられると、同部分から腐食する可能性
があるので、非常に危険である。このため、この
種の自動車用チユーブでは、跳ね石が当たる可能
性のある部分に厚い保護樹脂層を被覆しているの
が普通である。-Prior Art- Generally, in automotive tubes such as brake tubes, galvanized mild steel tubes whose surfaces are coated with fluororesin are sometimes used.
If such a soft iron tube is damaged by a flying stone while the car is running, it is very dangerous because the same part may corrode. For this reason, in this type of automobile tube, the parts that are likely to be hit by flying stones are usually coated with a thick protective resin layer.
ところで、この自動車用チユーブに用いる素材
チユーブＡは、例えば第５図示のように、車体の
形状に対応した状態の３次元的な形状にベンデイ
ングマシンで曲げ加工されるから、曲げ加工され
た素材チユーブＡをゾル状態のコーテイング樹脂
Ｂ（例えば塩化ビニル系樹脂で構成される）を収
容したコーテイング樹脂槽Ｃ中に一部を浸漬し、
付着したコーテイング樹脂Ｂを加熱してゲル化固
定している。ここに、ゾル状態の樹脂とは、コロ
イド粒子が高分子溶媒中に分散して流動性を示す
状態の樹脂をいい、ゲル状態樹脂とは、コロイド
粒子または高分子溶媒が相互作用のために独立し
た運動性を失つた状態、つまり固化した状態の樹
脂をいう。なお、素材チユーブに部分的な保護樹
脂層を被覆するため、従来では、熱収縮性樹脂チ
ユーブに素材チユーブを挿入して、加熱収縮によ
り樹脂チユーブを素材チユーブに密着させること
も行なわれている。 By the way, the material tube A used for this automotive tube is bent by a bending machine into a three-dimensional shape corresponding to the shape of the vehicle body, as shown in FIG. A portion of the tube A is immersed in a coating resin tank C containing a coating resin B in a sol state (for example, composed of a vinyl chloride resin),
The attached coating resin B is heated to gel and fix. Here, a sol-state resin refers to a resin in which colloidal particles are dispersed in a polymeric solvent and exhibits fluidity, and a gel-state resin refers to a resin in which colloidal particles or a polymeric solvent are independent due to interaction. This refers to resin that has lost its mobility, that is, is in a solidified state. In order to partially cover the material tube with a protective resin layer, conventionally, the material tube is inserted into a heat-shrinkable resin tube and the resin tube is brought into close contact with the material tube by heat shrinkage.
−発明が解決しようとする問題点−
しかしながら、前述したような工程で得られる
自動車用チユーブでは、素材チユーブＡをコーテ
イング樹脂Ｂ中に急速に浸漬すると、保護樹脂層
Ｄにピンホールが形成されることがあるので、曲
げ加工された素材チユーブＡを注意深くゆつくり
と浸漬する必要があり、手間を要する能率の悪い
作業が余儀なくされている。また、この作業で
は、コーテイング樹脂層Ｃから取りあげた素材チ
ユーブＡに付着した保護樹脂層Ｄは未だ流動性を
もつから、後の加熱工程でのゲル化固定前に、第
６図示のように重力方向へ垂れ、偏肉を起こし、
仕上りのよい加工状態が得られなかつた。そし
て、前述したコーテイング樹脂槽Ｃへの浸漬工程
では、素材チユーブＡが既に曲げられているの
で、被覆箇所によつては、余分な部分までも浸漬
する必要があり、余分なコーテイング樹脂Ｂの付
着により自動車用チユーブの重量が予定した値よ
りも大になり、車体重量の削減や素材の歩留り向
上の障害となり、コーテイング樹脂Ｂの複数箇所
への被覆が要求される場合には、各被覆箇所ごと
にゲル化工程までの工程を繰返えさなければなら
なかつた。-Problems to be Solved by the Invention- However, in the automotive tube obtained by the process described above, pinholes are formed in the protective resin layer D when the material tube A is rapidly immersed in the coating resin B. Therefore, it is necessary to carefully and slowly immerse the bent material tube A, which requires laborious and inefficient work. In addition, in this work, since the protective resin layer D attached to the material tube A taken from the coating resin layer C still has fluidity, it is necessary to apply gravity as shown in Figure 6 before gelling and fixing in the later heating process. It sag in the direction, causing uneven thickness,
A good finished machining condition could not be obtained. In the above-mentioned immersion process in the coating resin bath C, since the material tube A has already been bent, it may be necessary to immerse even the excess part depending on the coating location, and the excess coating resin B may not adhere to the material tube A. If the weight of the automobile tube becomes larger than the planned value due to this, which becomes an obstacle to reducing the vehicle weight or improving the material yield, and if coating resin B is required to cover multiple locations, each coating location must be The process up to the gelation step had to be repeated.
また、熱収縮性樹脂チユーブを用いる方法にあ
つては、熱収縮性樹脂チユーブ自体が高価で、素
材チユーブの挿入がやつかいであり、保護樹脂層
の密着性が悪く、境界面に水分が毛細管現象で浸
透する問題がある。 In addition, in the case of the method using a heat-shrinkable resin tube, the heat-shrinkable resin tube itself is expensive, the insertion of the material tube is difficult, the adhesion of the protective resin layer is poor, and moisture can form on the interface. There is a problem that permeates the phenomenon.
本発明の目的は、以上に述べたような従来の自
動車用部分コーテイングチユーブの問題に鑑み、
作業能率が高く、複数箇所の被覆でも同時に加工
でき、必要箇所のみに保護樹脂層を偏肉なく被覆
可能な密着性のよい自動車用部分コーテイングチ
ユーブの製造方法を提案するものである。 The purpose of the present invention is to solve the problems of the conventional partial coating tube for automobiles as described above.
The present invention proposes a method for manufacturing a partial coating tube for automobiles that has high work efficiency, can coat multiple locations at the same time, and has good adhesion and can coat only necessary locations with a protective resin layer without uneven thickness.
−問題点を解決するための手段−
この目的を達成するため、本発明は、外面の一
部に跳ね石対策用保護樹脂層を被覆する自動車用
チユーブにおいて、直管状態の素材チユーブを予
備加熱してゾル状態の樹脂を収容したまたは噴流
型コーテイング樹脂槽に一部を浸漬し、同素材チ
ユーブを加熱して保護樹脂層をゲル化した後、素
材チユーブを曲げ加工することを提案するもので
ある。-Means for Solving the Problems- In order to achieve this object, the present invention provides for preheating a straight material tube in an automobile tube whose outer surface is partially coated with a protective resin layer to prevent flying stones. This proposal proposes bending the material tube after heating the same material tube to gel the protective resin layer by immersing a portion of the material tube in a sol-state resin or jet-type coating resin bath. be.
−実施例−
以下、第１図から第４図について本発明の実施
例の詳細を説明する。-Embodiments- Hereinafter, details of embodiments of the present invention will be explained with reference to FIGS. 1 to 4.
先ず、自動車用部分コーテイングチユーブの加
工に当たつては、第１図に示すように、必要な寸
法に切断された直管状態の素材チユーブ１が用意
される。この素材チユーブ１としては、表面をフ
ツ素樹脂コートした亜鉛メツキ軟鋼チユーブ等の
周知の自動車用チユーブであればよい。そして、
同素材チユーブ１の表面には例えば塩化ビニル系
樹脂で構成するコーテイング樹脂の密着性を高め
るプライマー材が塗布され、第１図示のように必
要箇所が加熱トーチ２で予備加熱される。この予
備加熱温度としては、前述した塩化ビニル系樹脂
の場合、約180℃程度の温度が好ましい。 First, in processing a partial coating tube for an automobile, as shown in FIG. 1, a straight material tube 1 cut into required dimensions is prepared. The material tube 1 may be any well-known automotive tube such as a galvanized mild steel tube whose surface is coated with a fluororesin. and,
A primer material that enhances the adhesion of a coating resin made of, for example, vinyl chloride resin is applied to the surface of the tube 1 made of the same material, and the necessary locations are preheated with a heating torch 2 as shown in the first figure. In the case of the above-mentioned vinyl chloride resin, the preheating temperature is preferably about 180°C.
つぎに、予備加熱された素材チユーブ１は、第
２図に示すように、噴流型コーテイング樹脂槽３
Ａ，３Ｂに部分的に浸漬される。この場合、保護
樹脂層４Ａ，４Ｂを形成すべき箇所が複数ある場
合には、複数基の噴流型コーテイング樹脂槽３
Ａ，３Ｂが併設され、これらの噴流型コーテイン
グ樹脂槽３Ａ，３Ｂ間の間隔及び各噴流型コーテ
イング樹脂槽３Ａ，３Ｂでの噴流幅L1，L2を設
定することにより、同時に複数箇所のコーテイン
グ樹脂が素材チユーブ１の表面に付着される。こ
の場合、素材チユーブ１がコーテイング樹脂のゲ
ル化温度に予備加熱されているので、十分な厚み
の保護樹脂層４Ａ，４Ｂが形成されるが、この工
程では、矢印で示すように、素材チユーブ１を回
転しながら浸漬することにより、保護樹脂層４
Ａ，４Ｂの偏肉を防止できる。勿論、噴流型コー
テイング樹脂層３Ａ，３Ｂの噴流幅L1，L2を保
護樹脂層４Ａ，４Ｂとして必要な長さに設定でき
るから、素材チユーブ１の必要箇所のみにコーテ
イング樹脂を付着できる。 Next, the preheated material tube 1 is transferred to a jet type coating resin tank 3 as shown in FIG.
Partially immersed in A and 3B. In this case, if there are multiple locations where the protective resin layers 4A and 4B are to be formed, multiple jet-type coating resin tanks 3 are provided.
A and 3B are installed side by side, and by setting the spacing between these jet-type coating resin tanks 3A and 3B and the jet widths L 1 and L 2 in each jet-type coating resin tank 3A and 3B, it is possible to coat multiple locations at the same time. A resin is applied to the surface of the material tube 1. In this case, since the material tube 1 is preheated to the gelling temperature of the coating resin, the protective resin layers 4A and 4B are formed with sufficient thickness. By immersing the protective resin layer 4 while rotating the
Uneven thickness of A and 4B can be prevented. Of course, since the jet widths L 1 and L 2 of the jet-type coating resin layers 3A and 3B can be set to the required lengths as the protective resin layers 4A and 4B, the coating resin can be applied only to the necessary parts of the material tube 1.
この後、第３図に示すように、部分的に保護樹
脂層４Ａ，４Ｂを形成した素材チユーブ１を、コ
ーテイング樹脂のゲル化温度（塩化ビニル系樹脂
の場合、約180℃）に保つた加熱路５内で加熱す
る。したがつて、この加熱工程では、素材チユー
ブ１に形成されたコーテイング樹脂がゲル化固定
され、素材チユーブ１と完全に一体化されること
による。よつて、このような工程を経た素材チユ
ーブ１を、第４図示のようにベンデイングマシン
で曲げ加工することにより自動車用チユーブを完
成できる。なお、前記実施例においては、加熱ト
ーチで予備加熱し、噴流型コーテイング樹脂槽で
保護樹脂層を形成する例を説明したが、本発明で
は、電熱で素材チユーブを予備加熱して保護樹脂
層を形成してもよい。 After that, as shown in Fig. 3, the material tube 1 on which the protective resin layers 4A and 4B are partially formed is heated while maintaining the gelling temperature of the coating resin (approximately 180°C in the case of vinyl chloride resin). Heat in channel 5. Therefore, in this heating step, the coating resin formed on the material tube 1 is gelled and fixed, and is completely integrated with the material tube 1. Therefore, a tube for an automobile can be completed by bending the raw material tube 1 that has undergone such steps using a bending machine as shown in the fourth figure. In the above embodiment, an example was explained in which the protective resin layer was formed in a jet-type coating resin bath by preheating with a heating torch, but in the present invention, the protective resin layer was formed by preheating the material tube with electric heat. may be formed.
−発明の効果−
以上の説明から明らかなように、本発明によれ
ば、偏肉や垂れを起こすことなく、部分的に保護
樹脂層を被覆した部分コーテイングチユーブを得
ることができ、この部分コーテイングチユーブは
材料の無駄なく、能率的に製造できる効果があ
る。- Effects of the Invention - As is clear from the above description, according to the present invention, it is possible to obtain a partially coated tube that is partially covered with a protective resin layer without causing uneven thickness or sag, and Tubes have the advantage of efficient manufacturing without wasting materials.
第１図は本発明による予備加熱工程概念図、第
２図はコーテイング樹脂浸漬工程概念図、第３図
は加熱工程概念図、第４図は完成された本発明の
部分コーテイングチユーブの斜視図、第５図は従
来のコーテイング樹脂槽浸漬工程説明図、第６図
は従来の部分コーテイングチユーブの要部拡大斜
視図である。
１……素材チユーブ、２……加熱トーチ、３
Ａ，３Ｂ……噴流型コーテイング樹脂槽、４Ａ，
４Ｂ……保護樹脂層、５……加熱炉。
Fig. 1 is a conceptual diagram of the preheating process according to the present invention, Fig. 2 is a conceptual diagram of the coating resin immersion process, Fig. 3 is a conceptual diagram of the heating process, and Fig. 4 is a perspective view of the completed partial coating tube of the present invention. FIG. 5 is an explanatory diagram of a conventional coating resin bath immersion process, and FIG. 6 is an enlarged perspective view of a main part of a conventional partial coating tube. 1...Material tube, 2...Heating torch, 3
A, 3B...Jet type coating resin tank, 4A,
4B...Protective resin layer, 5...Heating furnace.
Claims (1)
する自動車用チユーブにおいて、直管状態の素材
チユーブを予備加熱してゾル状態の樹脂を収容し
た噴流型コーテイング樹脂槽に一部を浸漬し、同
素材チユーブを加熱して保護樹脂層をゲル化した
後、素材チユーブを曲げ加工したことを特徴とす
る自動車用部分コーテイングチユーブの製造方
法。1. In an automotive tube whose outer surface is partially coated with a protective resin layer to prevent flying stones, a straight material tube is preheated and a portion is immersed in a jet-type coating resin tank containing resin in a sol state. A method for manufacturing a partial coating tube for an automobile, characterized in that the same material tube is heated to gel a protective resin layer, and then the material tube is bent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62228155A JPS6471737A (en) | 1987-09-11 | 1987-09-11 | Partially coated tube for car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62228155A JPS6471737A (en) | 1987-09-11 | 1987-09-11 | Partially coated tube for car |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6471737A JPS6471737A (en) | 1989-03-16 |
| JPH0571030B2 true JPH0571030B2 (en) | 1993-10-06 |
Family
ID=16872089
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62228155A Granted JPS6471737A (en) | 1987-09-11 | 1987-09-11 | Partially coated tube for car |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6471737A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5270678A (en) * | 1992-03-06 | 1993-12-14 | Walker Magnetics Group, Inc. | Magnetic rail chuck |
-
1987
- 1987-09-11 JP JP62228155A patent/JPS6471737A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6471737A (en) | 1989-03-16 |
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