JP2605451B2 - Surface reinforcement method for concrete mold - Google Patents

Surface reinforcement method for concrete mold

Info

Publication number
JP2605451B2
JP2605451B2 JP2123663A JP12366390A JP2605451B2 JP 2605451 B2 JP2605451 B2 JP 2605451B2 JP 2123663 A JP2123663 A JP 2123663A JP 12366390 A JP12366390 A JP 12366390A JP 2605451 B2 JP2605451 B2 JP 2605451B2
Authority
JP
Japan
Prior art keywords
concrete
mold
carbon fiber
crack
reinforcing
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
Application number
JP2123663A
Other languages
Japanese (ja)
Other versions
JPH0419111A (en
Inventor
泰彦 菊地
康和 前川
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nissan Motor Co Ltd
Original Assignee
Nissan Motor Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Nissan Motor Co Ltd filed Critical Nissan Motor Co Ltd
Priority to JP2123663A priority Critical patent/JP2605451B2/en
Publication of JPH0419111A publication Critical patent/JPH0419111A/en
Application granted granted Critical
Publication of JP2605451B2 publication Critical patent/JP2605451B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C33/00Moulds or cores; Details thereof or accessories therefor
    • B29C33/38Moulds or cores; Details thereof or accessories therefor characterised by the material or the manufacturing process
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29KINDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2709/00Use of inorganic materials not provided for in groups B29K2703/00 - B29K2707/00, for preformed parts, e.g. for inserts
    • B29K2709/06Concrete
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29KINDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2909/00Use of inorganic materials not provided for in groups B29K2803/00 - B29K2807/00, as mould material
    • B29K2909/06Concrete

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Laminated Bodies (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION 【発明の目的】[Object of the invention]

(産業上の利用分野) 本発明は、樹脂のスタンピング成形等に用いるコンク
リート製の成形型の成形表面を炭素繊維強化プラスチッ
クで覆うことによって前記成形型の表面を補強するのに
利用される表面補強方法に関するものである。 (従来の技術) 従来、例えば樹脂のスタンピング成形に用いるコンク
リート製成形型としては、第4図に示すものがあった。 すなわち、図に示す成形型10は、上型10aと下型10bと
に別れ、これら上型10aおよび下型10bは、それぞれ鋳鉄
製のホルダー11および耐熱高強度コンクリート12から主
に構成され、上記ホルダー11とコンクリート12との間の
結合および補強のためのスタッド13,金網14,鉄筋15およ
び前記金網14に固着された銅パイプ16を備え、前記銅パ
イプ16に温水あるいは加熱油を通すことによって当該上
型10aおよび下型10bの温度調節を行うと共に、前記上型
10aと下型10bとの間に樹脂成形用の空隙17が形成される
ようになっている。 このような構造の成形型10は、モデルにホルダー11を
被せ、コンクリートを注型することによって、切削加工
なしに短時間,低コストで製作することができ、樹脂の
スタンピング成形に広く使用されている。 (発明が解決しようとする課題) しかしながら、上記構造のコンクリート製成形型10に
あっては、急激な加熱や衝撃などによって、コンクリー
トの成形表面12aに亀裂を生じることがあり、成形品の
品種,工法によっては亀裂が製品表面に転写する場合が
ある。また、亀裂が次第に伸展したり、亀裂の周辺部が
欠けて脱落したりして当該成形型10が使用できなくなる
などの問題点があって、このようなコンクリート製成形
型10の課題となっていた。 (発明の目的) 本発明は、コンクリート製成形型の上記課題を解決す
るためになされたものであって、コンクリート表面の亀
裂発生を抑止すると共に、万一コンクリートに亀裂が生
じた場合でもその伸展や亀裂近傍からのコンクリートの
欠落を防止し、もって成形型の寿命を延ばすことのでき
るコンクリート製成形型の表面補強方法を提供すること
を目的としている。
(Industrial application field) The present invention relates to surface reinforcement used to reinforce the surface of a concrete mold used for stamping molding of a resin by covering the molding surface of the mold with carbon fiber reinforced plastic. It is about the method. (Prior Art) Conventionally, for example, there is a concrete mold used for stamping molding of a resin as shown in FIG. That is, the forming die 10 shown in the figure is divided into an upper die 10a and a lower die 10b, and the upper die 10a and the lower die 10b are mainly constituted by a cast iron holder 11 and a heat-resistant high-strength concrete 12, respectively. A stud 13, a wire mesh 14, a reinforcing bar 15, and a copper pipe 16 fixed to the wire mesh 14 for connection and reinforcement between the holder 11 and the concrete 12, and hot water or heated oil is passed through the copper pipe 16. While controlling the temperature of the upper mold 10a and the lower mold 10b, the upper mold
A space 17 for resin molding is formed between the lower mold 10a and the lower mold 10b. The molding die 10 having such a structure can be manufactured in a short time and at low cost without cutting work by covering the model with the holder 11 and casting concrete, and is widely used for stamping molding of resin. I have. (Problems to be Solved by the Invention) However, in the concrete molding die 10 having the above structure, a crack may be generated on the concrete molding surface 12a due to rapid heating or impact, and the type of molded product, Cracks may transfer to the product surface depending on the construction method. In addition, there is a problem that the crack gradually expands, or the peripheral portion of the crack is chipped and falls off, making the mold 10 unusable. Was. (Object of the Invention) The present invention has been made in order to solve the above-mentioned problems of a concrete mold, and suppresses the occurrence of cracks on the concrete surface and expands the concrete even if a crack occurs. It is an object of the present invention to provide a method of reinforcing the surface of a concrete molding die, which can prevent concrete from falling near cracks and cracks, thereby extending the life of the molding die.

【発明の構成】Configuration of the Invention

(課題を解決するための手段) 本発明におけるコンクリート製成形型の表面補強方法
は、コンクリート製成形型のコンクリート表面に耐熱接
着剤を塗布して炭素繊維プリプレグ材を貼り付け、硬化
させる構成としたものであり、コンクリート製成形型の
表面補強方法における上記構成を前述した課題を解決す
るための手段としたことを特徴としている。 (作用) 本発明に係わるコンクリート製成形型の表面強化方法
では、コンクリート表面に耐熱接着剤を塗布して炭素繊
維プリプレグ材を貼り付け、硬化させることによって、
前記炭素繊維プリプレグ材は高強度でしかも耐熱性,熱
伝導性に優れた炭素繊維強化プラスチックとなってコン
クリート製成形型の成形面を覆うことになり、コンクリ
ート表面の亀裂発生やその伸展、拡大を防止する。ま
た、万一コンクリート部分に亀裂が入った場合でも前記
炭素繊維強化プラスチックによって覆われているので、
亀裂が成形品に転写されることはない。 (実施例) 以下、実施例によって本発明を具体的に説明する。 第1図(a)(b)(c)は、本発明に係わるコンク
リート製成形型の表面補強方法の一実施例を工程順に示
すものである。 まず、コンクリート製成形型10の下型10bにおいて、
耐熱高強度コンクリート12の表面12aに、第1図(a)
に示すように、銅粉入りの耐熱エポキシ系接着剤を塗布
して接着剤層1を形成させた。この場合、前記接着剤
は、成形品の種類,型温度等により選択するが200℃耐
熱のものを利用するのが望ましい。なお、接着剤は、前
記コンクリート表面12aおよび後述する炭素繊維プリプ
レグ材2(炭素繊維強化プラスチック)の相方との接着
性を考慮したものとすることが必要である。また、該接
着剤を銅粉入りのものとしたのは接着剤層1における熱
伝導性を配慮したものであって、必ずしも銅粉に限定さ
れず、例えばアルミニウム粉末であっても差しつかえな
い。 次に、第1図(b)に示すように、前記接着剤層1の
上に、炭素繊維クロスに常温硬化型の耐熱エポキシ樹脂
を含浸させた厚さ0.25mmの常温硬化型炭素繊維プリプレ
グ材2を重ねて貼り付けた。 次いで、第1図(c)に示すように、前記炭素繊維プ
リプレグ材2をコンクリート表面12aに貼り合わせた下
型10bを全体的にポリ四フッ化エチレン(テフロン)シ
ート3で覆い、真空バッキングによって、接着剤層1や
該接着剤層1とコンクリート12,プリプレグ材2との間
に介在する空気を追い出し、接着剤層1および炭素繊維
プリプレグ材を硬化させることにより、第2図に示すよ
うな、コンクリート表面12aが炭素繊維強化プラスチッ
ク4で覆われた補強下型5を得るに到った。 このように構成された下型(成形型)5において、前
記炭素繊維プリプレグ材2は、第3図にも拡大して示す
ように硬化によってエポキシ樹脂の約10倍の熱伝導率を
備えた炭素繊維強化プラスチック4となっており、接着
剤層1と合わせても0.3mm内外の厚さである上に、真空
バッキングによってコンクリート表面12aに密着状態で
接着されているため、銅パイプ16による温度調節性能を
損うことなくコンクリート12の表面12aのみの補強が可
能である。 また、前記炭素繊維強化プラスチック4は、約120kgf
/mm2もの高強度耐熱複合材であり、コンクリート12の亀
裂発生を抑止すると共に、万一亀裂が生じた場合にも、
当該炭素繊維強化プラスチック4に亀裂が入ることがな
いので、成形された樹脂製品に亀裂が転写さえる不具合
を解消することができ、さらに、亀裂の伸展,拡大,亀
裂周辺部のコンクリート欠落などの防止によって当該下
型(成形型)5の寿命を大幅に延ばすことが可能とな
る。 なお、この実施例ではコンクリート製成形型10の下型
10bについてその補強方法を説明したが、上型10aについ
ても同様の手順で補強が可能であることは説明するまで
もない。
(Means for Solving the Problems) The method for reinforcing the surface of a concrete mold according to the present invention has a configuration in which a heat-resistant adhesive is applied to the concrete surface of the concrete mold, a carbon fiber prepreg material is attached, and the concrete is cured. Wherein the above-described configuration in the method for reinforcing a surface of a concrete molding die is used as means for solving the above-mentioned problems. (Function) In the method for strengthening the surface of a concrete mold according to the present invention, a heat-resistant adhesive is applied to the concrete surface, a carbon fiber prepreg material is adhered thereto, and the concrete is cured.
The carbon fiber prepreg material is a carbon fiber reinforced plastic having high strength and excellent heat resistance and heat conductivity, and covers the molding surface of the concrete mold, thereby preventing cracking on the concrete surface and its extension and expansion. To prevent. Also, even if the concrete part is cracked, it is covered with the carbon fiber reinforced plastic,
No cracks are transferred to the part. (Examples) Hereinafter, the present invention will be described specifically with reference to examples. 1 (a), 1 (b) and 1 (c) show an embodiment of a method for reinforcing the surface of a concrete mold according to the present invention in the order of steps. First, in the lower mold 10b of the concrete molding die 10,
Fig. 1 (a) on the surface 12a of the heat-resistant high-strength concrete 12
As shown in (1), a heat-resistant epoxy-based adhesive containing copper powder was applied to form an adhesive layer 1. In this case, the adhesive is selected depending on the type of the molded product, the mold temperature, and the like, but it is preferable to use an adhesive having a heat resistance of 200 ° C. It is necessary that the adhesive be used in consideration of the adhesiveness between the concrete surface 12a and the carbon fiber prepreg material 2 (carbon fiber reinforced plastic) described later. Further, the reason why the adhesive containing copper powder is used in consideration of the thermal conductivity of the adhesive layer 1, is not necessarily limited to copper powder, and may be, for example, aluminum powder. Next, as shown in FIG. 1 (b), a cold-curable carbon fiber prepreg material having a thickness of 0.25 mm obtained by impregnating a carbon fiber cloth with a cold-curable heat-resistant epoxy resin on the adhesive layer 1 is used. 2 were pasted together. Next, as shown in FIG. 1 (c), the lower mold 10b in which the carbon fiber prepreg material 2 is bonded to the concrete surface 12a is entirely covered with a polytetrafluoroethylene (Teflon) sheet 3, and is vacuum-backed. By expelling the air existing between the adhesive layer 1 and the adhesive layer 1 and the concrete 12 and the prepreg material 2 and curing the adhesive layer 1 and the carbon fiber prepreg material, as shown in FIG. As a result, a reinforcing lower mold 5 in which the concrete surface 12a is covered with the carbon fiber reinforced plastic 4 was obtained. In the lower die (molding die) 5 configured as described above, the carbon fiber prepreg material 2 is cured by curing, as shown in FIG. It is made of fiber reinforced plastic 4 and has a thickness of 0.3 mm inside and outside when combined with the adhesive layer 1, and is adhered to the concrete surface 12 a by vacuum backing so that the temperature is controlled by the copper pipe 16. Only the surface 12a of the concrete 12 can be reinforced without impairing the performance. Further, the carbon fiber reinforced plastic 4 has a weight of about 120 kgf.
/ mm 2 is a high-strength heat-resistant composite material, which suppresses the cracking of concrete 12 and, even if a crack should occur,
Since the carbon fiber reinforced plastic 4 does not crack, it is possible to eliminate the problem that the crack is transferred to the molded resin product, and further prevent the extension and expansion of the crack and the lack of concrete around the crack. Thus, the life of the lower die (molding die) 5 can be greatly extended. In this embodiment, the lower mold of the concrete mold 10 is used.
The method of reinforcing the upper die 10b has been described, but it is needless to say that the upper die 10a can be reinforced in the same procedure.

【発明の効果】【The invention's effect】

以上説明したように、本発明に係わるコンクリート製
成形型の表面補強方法は、コンクリート製成形型のコン
クリート表面に耐熱接着剤を塗布して炭素繊維プリプレ
グ材を貼り付け、硬化させる構成としたものであるか
ら、コンクリート表面が高強度高熱伝導率,耐熱性を備
えた炭素繊維強化プラスチックで覆われており、当該成
形型の温度調節性能を損うことなく亀裂の発生を抑止す
ることができ、万一亀裂が生じた時でも亀裂の成形品へ
の転写や、亀裂の伸展,拡大,コンクリートの欠落を防
止することができ、成形型の寿命を大幅に延長すること
が可能になるという優れた効果が得られるものである。
As described above, the method for reinforcing the surface of a concrete mold according to the present invention has a configuration in which a heat-resistant adhesive is applied to the concrete surface of the concrete mold, a carbon fiber prepreg material is attached, and the concrete is cured. As a result, the concrete surface is covered with carbon fiber reinforced plastic having high strength, high thermal conductivity and heat resistance, and cracks can be suppressed without impairing the temperature control performance of the mold. Even when one crack is generated, it is possible to prevent the transfer of the crack to the molded product, the extension and expansion of the crack, and the loss of concrete, and it is possible to greatly extend the life of the mold. Is obtained.

【図面の簡単な説明】[Brief description of the drawings]

第1図(a)(b)(c)は本発明に係わるコンクリー
ト製成形型の表面補強方法の一実施例を工程順に説明す
る断面図、第2図は第1図(a)(b)(c)に示した
表面補強方法によって補強された下型(成形型)を示す
断面図、第3図は第2図のコンクリート表面補強部にお
ける部分拡大断面図、第4図は従来のコンクリート製成
形型の構造を示す断面図である。 1……接着剤層、2……炭素繊維プリプレグ、4……炭
素繊維強化プラスチック、10b……下型(コンクリート
製成形型)、2……コンクリート、12a……表面。
1 (a), 1 (b) and 1 (c) are cross-sectional views illustrating an embodiment of a method for reinforcing the surface of a concrete mold according to the present invention in the order of steps, and FIGS. 2 (a) and 2 (b). FIG. 3 is a cross-sectional view showing a lower mold (molding die) reinforced by the surface reinforcing method shown in FIG. 3C, FIG. 3 is a partially enlarged cross-sectional view of a concrete surface reinforcing portion shown in FIG. 2, and FIG. It is sectional drawing which shows the structure of a shaping | molding die. 1 ... adhesive layer, 2 ... carbon fiber prepreg, 4 ... carbon fiber reinforced plastic, 10b ... lower mold (concrete mold), 2 ... concrete, 12a ... surface.

Claims (1)

(57)【特許請求の範囲】(57) [Claims] 【請求項1】コンクリート製成形型のコンクリート表面
に耐熱接着剤を塗布して炭素繊維プリプレグ材を貼り付
け、硬化させることを特徴とするコンクリート製成形型
の表面補強方法。
1. A method for reinforcing a surface of a concrete molding die, comprising applying a heat-resistant adhesive to the concrete surface of the concrete molding die, affixing a carbon fiber prepreg material, and curing.
JP2123663A 1990-05-14 1990-05-14 Surface reinforcement method for concrete mold Expired - Lifetime JP2605451B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2123663A JP2605451B2 (en) 1990-05-14 1990-05-14 Surface reinforcement method for concrete mold

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2123663A JP2605451B2 (en) 1990-05-14 1990-05-14 Surface reinforcement method for concrete mold

Publications (2)

Publication Number Publication Date
JPH0419111A JPH0419111A (en) 1992-01-23
JP2605451B2 true JP2605451B2 (en) 1997-04-30

Family

ID=14866209

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2123663A Expired - Lifetime JP2605451B2 (en) 1990-05-14 1990-05-14 Surface reinforcement method for concrete mold

Country Status (1)

Country Link
JP (1) JP2605451B2 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006187975A (en) * 2005-01-07 2006-07-20 Dogu:Kk Reactive injection mold
DE102007037701A1 (en) * 2007-08-09 2009-02-12 MAX BÖGL Fertigteilwerke GmbH & Co. KG Mold and method of making a mold
DE102007042513A1 (en) * 2007-09-07 2009-03-12 Deutsches Zentrum für Luft- und Raumfahrt e.V. Method for and mold for the production of components, in particular made of fiber composites
FR2941644B1 (en) * 2009-01-30 2011-08-05 Arrk Tooling Sermo France MOLD COMPRISING AT LEAST ONE REMOVABLE INSERT FOR INJECTION MOLDING, COMPRESSION, REMOVABLE INSERT EQUIPPING THE MOLD AND METHOD FOR MANUFACTURING AND MODIFYING THE MOLD.
DE102016103851A1 (en) * 2016-03-03 2017-09-07 Kmb Keramischer Modell- Und Formenbau Gmbh Umform and / or Urformwerkzeug

Also Published As

Publication number Publication date
JPH0419111A (en) 1992-01-23

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