JP2008087409A - Aluminum alloy case structure and its manufacturing process - Google Patents

Aluminum alloy case structure and its manufacturing process Download PDF

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JP2008087409A
JP2008087409A JP2006272951A JP2006272951A JP2008087409A JP 2008087409 A JP2008087409 A JP 2008087409A JP 2006272951 A JP2006272951 A JP 2006272951A JP 2006272951 A JP2006272951 A JP 2006272951A JP 2008087409 A JP2008087409 A JP 2008087409A
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aluminum alloy
plastic material
fine holes
alloy casing
manufacturing
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Yung-Hung Chih
永宏 遲
Szu-Song Chen
思嵩 陳
Shin-Di Li
信迪 李
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FORE SHOT IND CORP
FORE SHOT INDUSTRIAL CORP
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<P>PROBLEM TO BE SOLVED: To improve adhesion with a plastic material laminated by forming fine protrusions/recesses without performing a wet chemical treatment on the front surface of an aluminum alloy plate material. <P>SOLUTION: Many recesses 3 having fine holes 31 are formed by laser irradiating on the front surface of a housing made of an aluminum alloy to be processed, a plastic layer is laminated by plastic injection molding within a mold, and the housing is coupled. An anchoring effect is performed by the recesses and the fine holes of their inner surfaces, and the adhesion with the plastic layer is improved. Moreover, due to physical processing, treatment causing a high environmental load, such as a waste liquid treatment, etc., is not required. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、アルミ合金筐体構造及びその製造方法に関するもので、機械加工方法で、特にアルミ合金材の表層に細微孔を具えた凹み部を成型し、続いてプラスチック材料の射出成形によりアルミ合金とプラスチックの複合体を形成する構造とその製造方法である。   The present invention relates to an aluminum alloy casing structure and a method for manufacturing the same, and is a machining method, in particular, forming a recess having a fine hole in the surface layer of an aluminum alloy material, followed by injection molding of a plastic material. A structure for forming a composite of an alloy and a plastic, and a method for manufacturing the structure.

アルミ合金は、比重が小さく、錆びにくく、加工が容易で且つ設置が簡単という特徴を具え、３Ｃ製品の外筐用、特にノート型パソコンの外筐と携帯電話の外筐体に広く応用されている。筐体はこの種の製品を保護する直接的な部品で、通常アルミ合金の筐体上には耐熱性、安定性及び成形性の高いプラスチック材を積層して強度を高める。   Aluminum alloy has the features of low specific gravity, resistance to rust, easy processing and easy installation, and is widely applied to the outer casing of 3C products, especially the outer casing of notebook computers and the outer casing of mobile phones. Yes. The casing is a direct part that protects this type of product. Usually, a plastic material having high heat resistance, stability, and moldability is laminated on the aluminum alloy casing to increase the strength.

公知のプラスチック材でアルミ合金の強度を向上する方法は、通常先ずアルミ合金の表層に化学エッチングを行い、アルミ合金板材の表層に皺状の凹凸の凹紋を形成させる。続いてプラスチック材をアルミ合金板材上に流し込む。しかしながら、化学エッチングには致命的な欠点がある。それは処理過程に於いて、大量の強酸性と強アルカリ性のエッチング廃液が発生するため、加工後の板材を長時間洗浄しなければならず、更に再生できない洗浄廃液が発生する。このため、公知のエッチング技術はアルミ合金の加工はできても、工程上の手間と時間がかかり、且つエッチング後に発生する危険度の高い化学廃液が発生し、重複使用ができない。更に作業員に作業環境の負担を掛ける。環境保護の概念が高まっている今日、エッチング廃液の処理問題は、できるだけ早く解決しなければならない問題である。
特開２０００−４３２０５号公報 A known method for improving the strength of an aluminum alloy with a plastic material is usually to first chemically etch the surface layer of the aluminum alloy to form a ridge-like uneven pattern on the surface layer of the aluminum alloy sheet. Subsequently, the plastic material is poured onto the aluminum alloy plate. However, chemical etching has fatal drawbacks. In the treatment process, a large amount of strongly acidic and strongly alkaline etching waste liquid is generated. Therefore, the processed plate material must be washed for a long time, and further, a cleaning waste liquid that cannot be regenerated is generated. For this reason, even if the known etching technique can process the aluminum alloy, it takes time and effort in the process, and chemical waste liquid having a high risk of being generated after etching is generated and cannot be used repeatedly. Furthermore, the work environment is burdened on the workers. With the growing concept of environmental protection, the problem of etching waste solution treatment is a problem that must be solved as soon as possible.
JP 2000-43205 A

解決しようとする問題点は、公知のプラスチック材をアルミ合金材に積層して強度を向上するにはその密着性を確保するため化学のエッチングによる表面処理を行なうが、この種の方法は加工後にエッチング廃液が発生し、環境に対する負荷が大きい。     The problem to be solved is that in order to improve the strength by laminating a known plastic material on an aluminum alloy material, a surface treatment by chemical etching is performed to ensure its adhesion. Etching wastewater is generated and the burden on the environment is large.

本発明は、加工したいアルミ合金の筐体を加工装置内に設置し、化学溶液を含まない機械加工方式でアルミ合金の筐体の表層に複数個の微細孔を具えた凹陥部を成形し、高流動性のプラスチック材を金型と共に射出成型方式で直接凹陥部に結合させる。これにより、アルミ合金の筐体上に環境を汚染せず、且つ結合性の高いアルミ合金とプラスチックの複合体が形成されることを最も主要な特徴とする。   In the present invention, an aluminum alloy casing to be processed is installed in a processing apparatus, and a concave portion having a plurality of fine holes is formed on a surface layer of the aluminum alloy casing by a machining method that does not include a chemical solution. A high-fluidity plastic material is directly bonded to the recess by injection molding together with a mold. As a result, the main feature is that a composite of an aluminum alloy and a plastic that does not pollute the environment and has high bonding properties is formed on the aluminum alloy casing.

本発明のアルミ合金筐体構造及びその製造方法は、上述の欠点を改善し、従来のエッチング加工後の合金を洗浄、乾燥させるステップを省き、直接機械加工したアルミ合金にプラスチック材を塗布し、一貫作業を達成し、時間と工程を省き、更に環境保護の要求に応えるという利点がある。     The aluminum alloy casing structure and the manufacturing method thereof according to the present invention improve the above-mentioned drawbacks, omit the step of cleaning and drying the conventional alloy after etching, applying a plastic material directly to the machined aluminum alloy, It has the advantages of achieving integrated work, saving time and processes, and meeting environmental protection requirements.

本発明の主な目的は、アルミ合金筐体構造及びその製造方法を提供することで、そのうち加工処理方法は、アルミ合金板材の表層に機械加工方式で、複数個の微細孔を具えた凹陥部を形成し、続いてプラスチック材の射出成型により該凹陥部を充填して積層し、アルミ合金とプラスチック複合体を形成する。     The main object of the present invention is to provide an aluminum alloy casing structure and a method for manufacturing the same, in which the processing method is a machining method on a surface layer of an aluminum alloy sheet, and a recessed portion having a plurality of fine holes. Then, the recess is filled and laminated by injection molding of a plastic material to form an aluminum alloy and a plastic composite.

本発明の別の目的は、アルミ合金筐体構造及びその製造方法を提供し、そのうち製造過程では物理的加工方式を用い、公知の化学エッチング溶液の使用を必要でない。それによりエッチング終了後の板材を洗浄するために費やされる大量な時間を省き、アルミ合金板材の加工効率を高め、加工工程で発生する環境汚染を防ぐ。   Another object of the present invention is to provide an aluminum alloy casing structure and a manufacturing method thereof, in which a physical processing method is used in the manufacturing process, and the use of a known chemical etching solution is not necessary. As a result, a large amount of time spent for cleaning the plate material after completion of etching is saved, the processing efficiency of the aluminum alloy plate material is increased, and environmental pollution generated in the processing process is prevented.

図１、２に示すのは、本発明のアルミ合金筐体構造の断面図で、アルミ合金板材１及び複合プラスチック層(図未提示)を含む。そのうち、アルミ合金板材１は、物理的機械加工処理２、例としてマイクロ機械加工もしくはコンピュータ制御の高機能レーザ装置のレーザビームを使用し、接触式もしくは非接触式で、この板材１の表層１１に一定の深さで、更にその表面に分布した複数個の深浅不等の微細孔３１、３１´を具えた凹陥部３を形成し、それによってこの凹陥部３内の表面の接触面積を大幅に増大する。   1 and 2 are sectional views of the aluminum alloy casing structure of the present invention, including an aluminum alloy sheet 1 and a composite plastic layer (not shown). Among them, the aluminum alloy plate 1 is a physical machining process 2, for example, using a laser beam of a high-performance laser device controlled by micromachining or computer, and is contact-type or non-contact type. A concave portion 3 having a plurality of fine holes 31 and 31 ′ with different depths and distributed on the surface is formed at a constant depth, thereby greatly increasing the contact area of the surface in the concave portion 3. Increase.

更に、予め加工済みのアルミ合金板材１をそれに合わせた金型(図未提示)にセットし、高流動性のプラスチック材であるＰＢＴもしくはＰＢＴ＋ＰＣを射出方式で凹陥部３内に入れて成型し、アルミ合金とプラスチックの複合体を形成する。   Furthermore, a pre-processed aluminum alloy sheet 1 is set in a mold (not shown) matched therewith, and PBT or PBT + PC, which is a high fluidity plastic material, is put into the recessed portion 3 by an injection method and molded. A composite of aluminum alloy and plastic is formed.

上述に示した説明及び図に基づき、本発明はアルミ合金筐体構造及びその製造方法を提供する。その製造過程は、先ず加工するアルミ合金の表層に機械加工処理、例としてマイクロ機械加工もしくはコンピュータ制御のレーザ装置で、表面が平坦な板体に複数個の微細孔を具えた凹陥部を形成する。続いてプラスチック材（ＰＢＴもしくはＰＢＴ＋ＰＣ）を金型内で射出成型により凹陥部内に充填して直接結合させる。プラスチックの冷却凝固を待って被加工板材を金型から取り出すと、その表面はアルミ合金とプラスチック材が結合したアルミ合金とプラスチックの複合体が形成される。   Based on the description and drawings shown above, the present invention provides an aluminum alloy casing structure and a manufacturing method thereof. In the manufacturing process, first, a machining process is performed on the surface layer of an aluminum alloy to be processed, for example, a micromachined or computer-controlled laser device is used to form a recess having a plurality of fine holes on a flat plate body. . Subsequently, a plastic material (PBT or PBT + PC) is filled in the recess by injection molding in a mold and directly bonded. When the workpiece is removed from the mold after the plastic has cooled and solidified, a composite of aluminum alloy and plastic, in which the aluminum alloy and plastic material are bonded, is formed on the surface.

本発明の長所は下述のとおりである。
国内金型業及び３Ｃ産業の発展から見て、高速化、高生産効率の製造方式は、将来の発展に欠かせないものである。本発明は、アルミ合金板材を加工した後、即座にそれにあわせた金型に入れ、プラスチック材を射出方式でその上に成型し、公知の複雑な工程を省き、二段階のステップだけで完了する一貫生産作業であり、生産速度及びコストを大幅に縮小し、大きな経済利益を得ることができる。 The advantages of the present invention are as follows.
In view of the development of domestic mold industry and 3C industry, high speed and high production efficiency manufacturing method is indispensable for future development. In the present invention, after processing an aluminum alloy sheet material, it is immediately put into a mold according to it, a plastic material is molded thereon by an injection method, and a known complicated process is omitted, and it is completed in only two steps. It is an integrated production operation, and production speed and cost can be greatly reduced, and great economic benefits can be obtained.

本発明は、コンピュータ制御の機械加工方式、例としてマイクロ機械加工もしくはレーザ加工を採用するため、複雑な形状のアルミ合金板材を正確でスピーディに処理でき、早く、安く、良好な複合成型技術は大きな競争力と発展潜在性を具える。   Since the present invention adopts a computer-controlled machining method, for example, micro machining or laser machining, it can accurately and speedily process a complex-shaped aluminum alloy sheet, and it is fast, cheap, and has good composite molding technology. Competitiveness and development potential.

本発明では、公知の化学エッチング技術を使わず、物理性の機械加工方式を用いるため、大量の危険な化学廃液の発生を防ぎ、作業者に対して危険度を大幅に下げただけでなく、環境保護にも大いに役立つ。   In the present invention, since a physical machining method is used without using a known chemical etching technique, the generation of a large amount of dangerous chemical waste liquid is prevented, and not only the risk is greatly reduced for the operator, It is also very useful for environmental protection.

本発明のアルミ合金の表層強化工程指示図である。It is a surface layer reinforcement | strengthening process instruction | indication figure of the aluminum alloy of this invention. 本発明のアルミ合金構造の一部拡大図である。It is a partially expanded view of the aluminum alloy structure of the present invention.

符号の説明Explanation of symbols

１ アルミ合金材
１１ 表層
２ 機械加工処理
３ 凹陥部
３１ 細微孔
３１´ 微細孔 DESCRIPTION OF SYMBOLS 1 Aluminum alloy material 11 Surface layer 2 Machining process 3 Recessed part 31 Fine hole 31 'Fine hole

Claims (10)

アルミ合金筐体表面をプラスチック材料で覆うと共に、
板材の表層に物理的加工によって形成した複数の微細孔を備えた凹陥部に該プラスチック材料を充填して、結合性を向上したこと
を特徴とするアルミ合金筐体構造。 While covering the aluminum alloy housing surface with plastic material,
An aluminum alloy casing structure characterized in that the plastic material is filled in a concave portion having a plurality of fine holes formed on a surface layer of a plate material by physical processing to improve the bonding property. 前記物理的加工処理は、マイクロ機械加工で、接触式加工方式でアルミ合金の表層に複数個の微細孔を具えた凹陥部を形成したものであることを特徴とする請求項１記載のアルミ合金筐体構造。   2. The aluminum alloy according to claim 1, wherein the physical processing is micromachining, and a concave portion having a plurality of fine holes is formed on a surface layer of the aluminum alloy by a contact processing method. Enclosure structure. 前記アルミ合金筐体構造は、アルミ合金板材の表層に複数個の微細孔を具えた凹陥部を斜めに形成したものであることを特徴とする請求項１記載のアルミ合金筐体構造。   2. The aluminum alloy casing structure according to claim 1, wherein the aluminum alloy casing structure is formed by obliquely forming a concave portion having a plurality of fine holes in a surface layer of an aluminum alloy plate material. 前記複合プラスチック層は、高流動性のプラスチック材料で、射出成形により上記アルミ合金板材の凹陥部内に充填・結合したことを特徴とする請求項１記載のアルミ合金筐体構造。   2. The aluminum alloy casing structure according to claim 1, wherein the composite plastic layer is made of a highly fluid plastic material and is filled and bonded into a recessed portion of the aluminum alloy plate by injection molding. 前記高流動性のプラスチック材料は、ＰＢＴもしくはＰＢＴ＋ＰＣであることを特徴とする請求項４記載のアルミ合金筐体構造。   5. The aluminum alloy casing structure according to claim 4, wherein the high fluidity plastic material is PBT or PBT + PC. １．アルミ合金筐体表面に物理的加工により複数の微細孔を内面に形成した凹陥 部を形成し、
２．該アルミ合金筐体を金型内にセットして、プラスチック材料の射出成形によ り、該プラスチック材料を該アルミ合金筐体上に積層すると共に、該凹陥部 内に充填せしめて結合する、
ことを特徴するアルミ合金筐体の製造方法。 1. On the surface of the aluminum alloy housing, a concave part with a plurality of fine holes formed on the inner surface is formed by physical processing.
2. The aluminum alloy casing is set in a mold, and the plastic material is laminated on the aluminum alloy casing by injection molding of a plastic material, and the recess is filled and bonded.
A method of manufacturing an aluminum alloy casing characterized by the above. 前記ステップ１の物理的加工処理は、コンピュータ制御のレーザ加工装置による、レーザー照射であることを特徴とする請求項６記載のアルミ合金筐体の製造方法。   7. The method of manufacturing an aluminum alloy casing according to claim 6, wherein the physical processing in Step 1 is laser irradiation by a computer-controlled laser processing apparatus. 前記ステップ１の物理的加工処理は、マイクロ機械処理で、接触式加工方式でアルミ合金板材の表層に複数個の微細孔を具えた凹陥部を形成することを特徴とする請求項６記載のアルミ合金筐体の製造方法。   7. The aluminum according to claim 6, wherein the physical processing in step 1 is a micromechanical process, and a concave portion having a plurality of fine holes is formed in the surface layer of the aluminum alloy sheet by a contact processing method. Manufacturing method of alloy housing. 前記ステップ１の物理的加工処理は、アルミ合金板材の表層に複数個の微細孔を具えた凹陥部を形成することを特徴とする請求項６記載のアルミ合金筐体の製造方法。   7. The method of manufacturing an aluminum alloy casing according to claim 6, wherein the physical processing in step 1 forms a recessed portion having a plurality of fine holes in a surface layer of the aluminum alloy sheet. 前記ステップ２のプラスチック材は、ＰＢＴもしくはＰＢＴ＋ＰＣの高流動性のプラスチック材とすることを特徴とする請求項６記載のアルミ合金筐体の製造方法。   7. The method of manufacturing an aluminum alloy casing according to claim 6, wherein the plastic material in step 2 is a plastic material having high fluidity of PBT or PBT + PC.
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