JPS63157732A - Manufacture of die made of urethane - Google Patents
Manufacture of die made of urethaneInfo
- Publication number
- JPS63157732A JPS63157732A JP61303773A JP30377386A JPS63157732A JP S63157732 A JPS63157732 A JP S63157732A JP 61303773 A JP61303773 A JP 61303773A JP 30377386 A JP30377386 A JP 30377386A JP S63157732 A JPS63157732 A JP S63157732A
- Authority
- JP
- Japan
- Prior art keywords
- punch
- urethane resin
- urethane
- resin layer
- recess
- 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
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 8
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 title claims abstract description 6
- 229920002803 thermoplastic polyurethane Polymers 0.000 claims abstract description 32
- 229920005989 resin Polymers 0.000 claims abstract description 31
- 239000011347 resin Substances 0.000 claims abstract description 31
- 239000000314 lubricant Substances 0.000 claims abstract description 16
- 239000012783 reinforcing fiber Substances 0.000 claims abstract description 13
- 229920001296 polysiloxane Polymers 0.000 claims abstract description 8
- 238000000034 method Methods 0.000 claims description 7
- 239000011248 coating agent Substances 0.000 abstract 1
- 238000000576 coating method Methods 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 37
- 239000002131 composite material Substances 0.000 description 7
- 239000000835 fiber Substances 0.000 description 6
- 230000002787 reinforcement Effects 0.000 description 6
- 230000003014 reinforcing effect Effects 0.000 description 6
- 238000000465 moulding Methods 0.000 description 4
- 229910001018 Cast iron Inorganic materials 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 3
- 229920000049 Carbon (fiber) Polymers 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000004917 carbon fiber Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 239000002344 surface layer Substances 0.000 description 2
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 1
- 235000017491 Bambusa tulda Nutrition 0.000 description 1
- 241001330002 Bambuseae Species 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- OWYWGLHRNBIFJP-UHFFFAOYSA-N Ipazine Chemical compound CCN(CC)C1=NC(Cl)=NC(NC(C)C)=N1 OWYWGLHRNBIFJP-UHFFFAOYSA-N 0.000 description 1
- 229920000271 Kevlar® Polymers 0.000 description 1
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 1
- 239000011425 bamboo Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- XXKOQQBKBHUATC-UHFFFAOYSA-N cyclohexylmethylcyclohexane Chemical compound C1CCCCC1CC1CCCCC1 XXKOQQBKBHUATC-UHFFFAOYSA-N 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 229920006332 epoxy adhesive Polymers 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 239000004761 kevlar Substances 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000013022 venting Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING 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
- B29K2075/00—Use of PU, i.e. polyureas or polyurethanes or derivatives thereof, as moulding material
Landscapes
- Mounting, Exchange, And Manufacturing Of Dies (AREA)
- Presses And Accessory Devices Thereof (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、内面にパンチ形状を転写したウレタン樹脂か
ら成る樹脂層を形成したウレタン製ダイの製造方法に関
する。DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a method for manufacturing a urethane die having a resin layer made of urethane resin having a punch shape transferred onto the inner surface.
（従来の技術）
従来、特開昭６１−１７６４２６号公報により、ダイ本
体にパンチを空隙を存して挿入可能な凹部を形成し、該
凹部にパンチを挿入した状態で該凹部内の空隙にウレタ
ン樹脂を注入して、該凹部内面にパンチ形状を転写した
樹脂層を有するダイを製造するようにしたものは知られ
る。(Prior Art) Conventionally, according to Japanese Unexamined Patent Publication No. 176426/1983, a recess into which a punch can be inserted is formed in a die body, and the punch is inserted into the recess into the recess. It is known to manufacture a die having a resin layer in which a punch shape is transferred to the inner surface of the recess by injecting urethane resin.
又、ウレタン樹脂を用いるものではないが、内面に樹脂
層を形成したダイとして、特公昭５９−１１３７０号に
より、樹脂層に鋳鉄粉を混入して、樹脂層の耐圧強度及
びブランクに対する滑り性を向上させたものが知られて
いる。In addition, although urethane resin is not used, as a die with a resin layer formed on the inner surface, cast iron powder is mixed in the resin layer to improve the pressure resistance of the resin layer and the slipperiness against the blank, according to Japanese Patent Publication No. 59-11370. Improvements are known.
（発明が解決しようとする問題点）
ところで、上記した製造方法では、樹脂層にパンチ形状
がそのままブランクの板厚を見込むことなく転写される
ため、プレス成形特樹脂層がブランクの板厚弁だけ圧縮
されるようにする必要があり、この場合樹脂層をウレタ
ン樹脂で形成すれば適度な圧縮反力が１９られて、成形
荷重を余り大きくせずに形状精度の良い製品を（ｑられ
る利点がある。(Problems to be Solved by the Invention) By the way, in the above manufacturing method, the punch shape is directly transferred to the resin layer without taking into account the thickness of the blank, so the press-molded special resin layer only covers the thickness of the blank. In this case, if the resin layer is made of urethane resin, an appropriate compression reaction force can be generated, and a product with good shape accuracy can be produced without increasing the molding load too much. be.
然し、Ｒ部や絞り部等の成形負荷の高い部分は樹脂層の
耐圧強度を高めなければ精度良く成形できず、樹脂層の
耐圧強度を部分的に強化する必要がある。However, parts such as R parts and narrowed parts that are subject to high molding loads cannot be molded accurately unless the pressure strength of the resin layer is increased, and it is necessary to partially strengthen the pressure strength of the resin layer.
この場合、上記した後者の従来技術を利用し、耐圧強度
を必要とする部分に鋳鉄粉を多く混入することが考えら
れるが、鋳鉄粉の混入層を部分的に変化させることは実
際上困難であり、実用的ではない。In this case, it is conceivable to use the latter conventional technique mentioned above and mix a large amount of cast iron powder into the parts that require pressure resistance, but it is practically difficult to partially change the mixed layer of cast iron powder. Yes, it is not practical.
本発明は、以上の問題点に鑑み、樹脂層のブランクに対
する滑り性を高め且つ樹脂層の耐圧強度の部分的な強化
も可能としたダイの製造方法を提供することをその目的
とする。SUMMARY OF THE INVENTION In view of the above problems, an object of the present invention is to provide a die manufacturing method that increases the slipperiness of a resin layer against a blank and also makes it possible to partially strengthen the compressive strength of the resin layer.
（問題点を解決するための手段）
本発明は、上記目的を達成すべく、ダイ本体にパンチを
空隙を有して挿入可能な凹部を形成し、該凹部に該パン
チを挿入した状態で該凹部内の空隙にウレタン樹脂を注
入して、該凹部内面にパンチ形状を転写した樹脂層を形
成するものにおいて、該パンチの挿入前工程で該パンチ
にシリコン系潤滑剤を混入したｒウレタン樹脂を塗布し
、次いで該樹脂層の耐圧強度を必要とする部分に対応す
る該パンチの箇所にウレタン樹脂を含浸させた補強繊維
片を貼付するようにしたことを特徴とする。(Means for Solving the Problems) In order to achieve the above object, the present invention forms a recess in a die body with a gap into which a punch can be inserted, and when the punch is inserted into the recess, the punch is inserted into the recess. In a method in which urethane resin is injected into the gap in the recess to form a resin layer with the punch shape transferred to the inner surface of the recess, the urethane resin mixed with a silicone lubricant is added to the punch in the process before inserting the punch. The method is characterized in that a reinforcing fiber piece impregnated with urethane resin is applied to the punch at a location corresponding to a portion of the resin layer that requires pressure resistance strength.
（作 用）
ダイ本体の凹部内に注入するウレタン樹脂にパンチに予
め塗布したシリコン潤滑剤入りのウレタン樹脂及び補強
繊維片が一体化して、表面層にシリコン系潤滑剤を含み
且つ耐圧強度を必要とする部分に補強繊維片とウレタン
樹脂との複合強化層を有する樹脂層が形成される。(Function) The urethane resin injected into the recess of the die body, the urethane resin containing silicone lubricant applied to the punch in advance, and the reinforcing fiber pieces are integrated, and the surface layer contains silicone lubricant and is required to have high pressure resistance. A resin layer having a composite reinforcing layer of reinforcing fiber pieces and urethane resin is formed on the portion where the reinforcing fiber pieces and urethane resin are combined.
その結果、樹脂層のブランクに対する滑り性がシリコン
潤滑剤の潤滑作用により高められて、ブランクとのこじ
りによる成形性の悪化が防止され、更に複合強化層によ
り樹脂層の耐圧強度が必要部分で強化されて、プレス成
形品の形状精度が向上する。As a result, the slipperiness of the resin layer against the blank is increased by the lubricating action of the silicone lubricant, preventing deterioration of moldability due to prying with the blank, and the composite reinforcing layer strengthens the pressure resistance of the resin layer in the necessary areas. As a result, the shape accuracy of the press-formed product is improved.
（実施例）
第１図を参照して、（１）はダイ本体、（２）はパンチ
を示し、該ダイ本体（１）と該パンチ（２）とはＦＣ材
等の金属製とし、該ダイ本体（１）に該パンチ（２）を
空隙を存して挿入可能な下向きに間口する凹部（３）を
形成し、該凹部（３）の開口端内周に目止め用のシート
ワックス（４）を貼付けた状態で該凹部（３）に該パン
チ（２）を挿入して該ダイ本体（１）と該パンチ（シ）
とをシャットハイド状態にセットし、この状態で該ダイ
本体（１）の土壁部のエア抜き孔（５）から凹部（３）
内のエア抜きを行ないつつ、該ダイ本体（１）の周壁部
に形成した注入孔（６）から該凹部（３）内の空隙にウ
レタン樹脂（７）、例えば日本チバガイギー社製のウレ
オール６４１４Ａを注入するようにした。(Example) Referring to FIG. 1, (1) is a die body, (2) is a punch, and the die body (1) and the punch (2) are made of metal such as FC material. A downwardly opening recess (3) into which the punch (2) can be inserted with a gap is formed in the die body (1), and a sealing sheet wax ( 4), insert the punch (2) into the recess (3) and separate the die body (1) and the punch (shi).
and in a shut-hide state, and in this state, from the air vent hole (5) in the soil wall of the die body (1) to the concave part (3).
While venting the air inside, a urethane resin (7), such as ureol 6414A manufactured by Ciba Geigy Japan, is poured into the gap in the recess (3) from the injection hole (6) formed in the peripheral wall of the die body (1). I decided to inject it.
ここで、該パンチ（２）には、これを凹部（３）に挿入
する前に、シリコン系ｆａ滑剤を混入した上記と同一の
ウレタン樹脂（８）を塗布し、更に該パンチ（２）の肩
部やその上面の突起の立上りコーナ部等に上記と同一の
ウレタン樹脂を含浸させた補強繊維片（９）を貼付して
おくものとし、上記した凹部（３）内へのウレタン樹脂
（７′＞の注入でこれらウレタン樹脂（８）や補強繊維
片（９）が該ウレタン樹脂（７）と一体化され、その硬
化によって表面層に潤滑剤を含み且つ部分的に補強ｌｌ
ｌ竹片９）とウレタン樹脂との複合強化層を有する樹脂
層がダイ本体（１）の凹部（３）内面に形成されるよう
にした。Here, before inserting the punch (2) into the recess (3), the same urethane resin (8) as above mixed with a silicone fa lubricant is applied, and the punch (2) is A piece of reinforcing fiber (9) impregnated with the same urethane resin as above shall be pasted on the shoulder and the rising corner of the protrusion on its upper surface, and the urethane resin (7) in the recess (3) described above shall be pasted. The urethane resin (8) and reinforcing fiber pieces (9) are integrated with the urethane resin (7) by injecting the urethane resin (7), and by curing, the surface layer contains lubricant and is partially reinforced.
A resin layer having a composite reinforcing layer of bamboo pieces 9) and urethane resin was formed on the inner surface of the recess (3) of the die body (1).
尚、ダイ本体（１）から樹脂層が剥離しないよう、四部
（３）の内面に予めエポキシ接着剤とその上にウレタン
系ブライマーとを塗布しておく。Incidentally, in order to prevent the resin layer from peeling off from the die body (1), an epoxy adhesive and a urethane-based brusher are applied on the inner surface of the fourth part (3) in advance.
ここで、上記したシリコン系潤滑剤としては、例えばダ
ウコーニング社製のＤＫＱ８−７７８が適当である。Here, as the silicone lubricant mentioned above, for example, DKQ8-778 manufactured by Dow Corning is suitable.
第２図は樹脂層の表面の動摩擦係数、硬度（シヨアＤ硬
度ｌ５Ｏ８６８）及び摩耗量（１０万シヨツト後）と潤
滑剤のウレタン樹脂（８）への混入率との関係を示し、
動Ｉ’ｌ′ｖ、係数は同図ａ線で示すように潤滑剤を混
入しない場合０．１８であったのが１％の混入で０．０
８７と大きく減少し、５％の混入で０．０７５．１０％
の混入で０．０６８となり、それ以上は余り減少しなく
なる。又、潤滑剤の混入率の増加に伴い同図ｂ１線の如
く硬度が低下して摩耗量が同図Ｃ４線の如く増加し、耐
摩耗性を確保する上で混入率は１〜５％にすることが望
ましい。尚、第２図ｂ１、Ｃ１線は補強ｍ雄片（９）の
無い部分の硬度と摩耗量ｂ ２．０２線は補強ＩＩ雑片
（９）の有る部分の硬度と摩耗量を示す。Figure 2 shows the relationship between the dynamic friction coefficient, hardness (Shore D hardness 15O868), and wear amount (after 100,000 shots) of the surface of the resin layer and the mixing rate of the lubricant into the urethane resin (8).
As shown by line a in the figure, the coefficient of dynamic I'l'v was 0.18 when no lubricant was mixed, but it became 0.0 when 1% of lubricant was mixed.
It decreased significantly to 87, and 0.075.10% with 5% contamination.
With the addition of , it becomes 0.068, and beyond that it does not decrease much. In addition, as the mixing rate of lubricant increases, the hardness decreases as shown by line B1 in the same figure, and the amount of wear increases as shown by line C4 in the same figure.In order to ensure wear resistance, the mixing rate should be 1 to 5%. It is desirable to do so. In addition, the lines b1 and C1 in FIG. 2 show the hardness and wear amount of the part without the reinforcement m male piece (9), and the b2.02 line shows the hardness and the wear amount of the part with the reinforcement II miscellaneous piece (9).
補強繊維片（９）用の繊維としては、炭素ｍ維、ガラス
Ｉ！維、スチール繊維も考えられるが、炭素繊維は強度
は有るがパンチ形状に対してのなじみ性が悪く、又ガラ
ス繊維やスチール繊維は取扱い性が悪いため、強度が有
って且つパンチ形状に倣い易く取扱いの容易なケブラー
繊維（デュポン社登録商標）を用いることが望ましい。The fibers for the reinforcing fiber piece (9) include carbon M fiber and glass I! Carbon fibers and steel fibers are also considered, but carbon fibers have strength but do not conform well to the punch shape, and glass fibers and steel fibers have poor handling properties. It is desirable to use Kevlar fiber (registered trademark of DuPont), which is easy to handle.
補強繊維片（９）は、各部分の耐圧強度に合わせて適宜
複数枚を積層する。A plurality of reinforcing fiber pieces (9) are laminated as appropriate depending on the pressure resistance of each part.
第３図はウレタン樹脂層（厚さ１５＃１Ｍ＞の圧縮歪を
示し、図中ａ線は補強繊維片（９）の複合強化層（厚さ
２ Ｍ＞を有する場合、ｂ線は複合強化層の無い場合で
あり、複合強化層により樹脂層の耐圧強度が高められる
ことが分る。Figure 3 shows the compressive strain of the urethane resin layer (thickness 15 #1M>, and in the figure, the a line is the composite reinforcement layer (thickness 2M>) of the reinforcing fiber piece (9), and the b line is the composite reinforcement layer (thickness 2M>). This is the case where there is no layer, and it can be seen that the compressive strength of the resin layer is increased by the composite reinforcing layer.
上記したパンチ（２）の肩部や突起の立上りコーナ部に
対応する樹脂層の部分の耐圧強度が低いと、ブランクの
プレス成形時に成形負荷により樹脂層が該部分で大きく
圧縮変形されて、ブランクがこれら肩部やコーナ部に圧
着しなくなり、形状精度が悪くなるが、上記実施例によ
れば該部分の耐圧強度が複合強化層により強化され、か
かる不具合を生じない。If the pressure resistance of the parts of the resin layer corresponding to the shoulders of the punch (2) and the rising corners of the protrusions described above is low, the resin layer will be compressed and deformed greatly at these parts due to the molding load during press molding of the blank, and the blank will be However, according to the embodiment described above, the pressure resistance of these portions is strengthened by the composite reinforcing layer, and this problem does not occur.
（発明の効果）
以上の如く本発明によるときは、ダイ本体の凹部内に形
成する樹脂層のブランクに対する滑り性を良くしてブラ
ンクとのこじりによる成形性の悪化を防止できると共に
、該樹脂層の耐圧強度を必要箇所において部分的に強化
して、プレス成形の形状精度を向上でき、而もこの部分
強化は予めパンチの適所に補強繊維片を貼付しておくだ
けで簡単に行ない得られ、ダイの製造コストを低く抑え
られる効果を有する。(Effects of the Invention) As described above, according to the present invention, the resin layer formed in the recess of the die main body can improve the slipperiness against the blank, thereby preventing deterioration of moldability due to prying with the blank, and the resin layer It is possible to improve the shape accuracy of press forming by partially reinforcing the pressure resistance of the punch at the required locations.This partial reinforcement can be easily achieved by simply pasting reinforcing fiber pieces at the appropriate locations on the punch in advance. This has the effect of keeping die manufacturing costs low.
第１図は本発明方法によるダイ内へのウレタン樹脂の注
入状態を示す截断側面図、第２図はｆｌｌＩｌ滑剤の混
入率と樹脂層のｉ！Ｉ摩擦係数及び硬度及び摩耗量との
関係を示す線図、第３図は樹脂層の圧縮歪を示す線図で
ある。
（１）・・・ダイ本体
（２）・・・パ ン チ
（３）・・・凹 部
（７）・・・凹部内に注入するウレタン樹脂（８）・・
・潤滑剤入りウレタン樹脂
（９）・・・補強繊維片FIG. 1 is a cross-sectional side view showing the state of injection of urethane resin into a die according to the method of the present invention, and FIG. 2 shows the mixing ratio of flll lubricant and i! of the resin layer. A diagram showing the relationship between I friction coefficient, hardness, and amount of wear; FIG. 3 is a diagram showing the compressive strain of the resin layer. (1)...Die body (2)...Punch (3)...Recess (7)...Urethane resin injected into the recess (8)...
・Urethane resin with lubricant (9)...Reinforcement fiber piece
Claims (1)
し、該凹部に該パンチを挿入した状態で該凹部内の空隙
にウレタン樹脂を注入して、該凹部内面にパンチ形状を
転写した樹脂層を形成するものにおいて、該パンチの挿
入前工程で該パンチにシリコン系潤滑剤を混入したウレ
タン樹脂を塗布し、次いで該樹脂層の耐圧強度を必要と
する部分に対応する該パンチの箇所にウレタン樹脂を含
浸させた補強繊維片を貼付するようにしたことを特徴と
するウレタン製ダイの製造方法。A recess into which a punch can be inserted is formed in the die body, and with the punch inserted into the recess, urethane resin is injected into the recess to transfer the punch shape to the inner surface of the recess. In the case where a resin layer is formed, a urethane resin mixed with a silicone lubricant is applied to the punch in the process before inserting the punch, and then a portion of the punch corresponding to a portion of the resin layer that requires pressure resistance strength is applied. A method for manufacturing a urethane die, characterized in that a reinforcing fiber piece impregnated with urethane resin is attached to the die.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61303773A JPS63157732A (en) | 1986-12-22 | 1986-12-22 | Manufacture of die made of urethane |
| GB8728440A GB2199282B (en) | 1986-12-19 | 1987-12-04 | Process for producing a urethane moulding |
| US07/420,602 US4935085A (en) | 1986-12-19 | 1989-10-04 | Process for producing urethane die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61303773A JPS63157732A (en) | 1986-12-22 | 1986-12-22 | Manufacture of die made of urethane |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63157732A true JPS63157732A (en) | 1988-06-30 |
| JPH0369606B2 JPH0369606B2 (en) | 1991-11-01 |
Family
ID=17925110
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61303773A Granted JPS63157732A (en) | 1986-12-19 | 1986-12-22 | Manufacture of die made of urethane |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63157732A (en) |
-
1986
- 1986-12-22 JP JP61303773A patent/JPS63157732A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0369606B2 (en) | 1991-11-01 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |