JPH01108015A - Mold for plastic injection molding - Google Patents
Mold for plastic injection moldingInfo
- Publication number
- JPH01108015A JPH01108015A JP26522787A JP26522787A JPH01108015A JP H01108015 A JPH01108015 A JP H01108015A JP 26522787 A JP26522787 A JP 26522787A JP 26522787 A JP26522787 A JP 26522787A JP H01108015 A JPH01108015 A JP H01108015A
- Authority
- JP
- Japan
- Prior art keywords
- mold
- hard alumite
- aluminum alloy
- thickness
- fixed side
- 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.)
- Pending
Links
- 229920003023 plastic Polymers 0.000 title claims description 11
- 239000004033 plastic Substances 0.000 title claims description 11
- 238000001746 injection moulding Methods 0.000 title abstract description 8
- 229910000838 Al alloy Inorganic materials 0.000 claims abstract description 31
- 239000010959 steel Substances 0.000 claims abstract description 19
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 18
- 238000002347 injection Methods 0.000 claims description 9
- 239000007924 injection Substances 0.000 claims description 9
- 229910000851 Alloy steel Inorganic materials 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 14
- 238000000465 moulding Methods 0.000 abstract description 9
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 abstract description 8
- 239000000956 alloy Substances 0.000 abstract description 7
- 229910045601 alloy Inorganic materials 0.000 abstract description 6
- 230000013011 mating Effects 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 239000003792 electrolyte Substances 0.000 abstract 1
- 238000004049 embossing Methods 0.000 abstract 1
- 230000003746 surface roughness Effects 0.000 description 6
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 239000008151 electrolyte solution Substances 0.000 description 3
- 238000003754 machining Methods 0.000 description 3
- 230000000873 masking effect Effects 0.000 description 3
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 2
- 241000272814 Anser sp. Species 0.000 description 2
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000003063 flame retardant Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- YMHOBZXQZVXHBM-UHFFFAOYSA-N 2,5-dimethoxy-4-bromophenethylamine Chemical compound COC1=CC(CCN)=C(OC)C=C1Br YMHOBZXQZVXHBM-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 241000238557 Decapoda Species 0.000 description 1
- 241000545067 Venus Species 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000010068 moulding (rubber) Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明はグラスチックを射出成形するための金型に関し
、４０ＰＫその一部にアルミニウム合金を用いた射出成
形用金製の改良に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a mold for injection molding plastic, and relates to an improvement of a mold for injection molding using an aluminum alloy as a part of 40PK.
グラスチックの射出成形用金型としては、一般に鋼材を
機械加工したものが使用されてｈる。これらの金型は、
その中に彫込まれるキャビティ・コアの加工に多大の加
工工数を要するために、−般にその価格は数十万円から
数百万円と高価なものにつく、そこで、近年の各稽製品
の多品種少量化およびライフサイクルの短期化に伴ない
、短納期で低価格な金型が求められている。Generally, a mold made of machined steel is used as a mold for injection molding of glass. These molds are
Because it takes a large amount of man-hours to process the cavity core that is carved into it, the cost is generally high, ranging from hundreds of thousands of yen to several million yen. With the reduction in the number of high-mix products and the shortening of life cycles, there is a need for low-cost molds with short delivery times.
これに対応する一つの手段として、加工性の良いアルミ
ニウム合金を用いて金型を製作することが試みられてい
る。As one means to deal with this, attempts have been made to manufacture molds using aluminum alloys with good workability.
アルミニウム合金としては機械的強度の大きいＪＩＳ−
Ａ７０７５系の材料を用することか多いが。JIS- has high mechanical strength as an aluminum alloy.
A7075-based materials are often used.
この材料を使用しても、鋼材に比べると硬度が小さいた
めに、プラスチックの流動および離型時の摩擦によ）型
が摩耗し易く、スライドコア等の摺動部がかじり易い。Even if this material is used, since its hardness is lower than that of steel, the mold is likely to wear out (due to plastic flow and friction during mold release), and sliding parts such as the slide core are likely to be galled.
これらの理由から、アルミニウム合金製金属でプラスチ
ックの射出成形を行なった場合、１万シ、クトないしは
３万シ、ット程度で使用不能になることが多かった。ア
ルミニウム合金製金型の耐久性を錆性金型のそれに近づ
けることができれば、その経済性は計シ知れないものか
あシ、各種の方法が検討されている。For these reasons, when plastic injection molding is performed using aluminum alloy metal, it often becomes unusable after about 10,000 to 30,000 tons. If the durability of aluminum alloy molds could be brought close to that of rust-resistant molds, the economic efficiency would be immeasurable, and various methods are being considered.
その一つは、金型のキャピテイ・コアの表面に硬質アル
マイト処理を施すことである。「アルミニウム表面技術
便覧」（軽金属出版）によると、硬質アルマイトの皮膜
厚は２０〜１００μｍ程度が実用範囲とされ、一般に２
０〜６０μｍ程度の厚さとすることによシ、鋼製金型に
近り耐久性が得られることが知られている。One of these is to apply hard alumite treatment to the surface of the cavity core of the mold. According to "Aluminum Surface Technology Handbook" (Keikinzoku Publishing), the practical range of hard alumite film thickness is about 20 to 100 μm, and generally 2.
It is known that by setting the thickness to about 0 to 60 μm, durability similar to that of a steel mold can be obtained.
しかしながら、この方法では硬質アルマイト処理により
てアルミニウム合金表面が硬質アルマイト皮膜厚さの１
７３〜Ｖ２、即ち７〜３０μｍ程度増加するので、成形
品に高精度が要求される場合には、製品の形状寸法が変
化して不都合が生じる。However, in this method, the hard alumite treatment makes the aluminum alloy surface 1/2 the thickness of the hard alumite film.
Since the increase is about 73 to V2, that is, about 7 to 30 μm, if high precision is required for the molded product, the shape and dimensions of the product will change, causing problems.
また、凹凸の組合せによ多形成される可動側と固定側の
聾合せ面やスライドコア等の摺動面、さらに割シ型の盟
合せ面など、約１／１００ｍの加工精度が要求される部
分では、硬質アルマイト皮膜によ）寸法が増加すると型
寸法が許容寸法範囲に入らなくなるため、金型が使用不
能となる。In addition, machining accuracy of approximately 1/100 m is required for mating surfaces of the movable side and fixed side, sliding surfaces of slide cores, etc., which are formed by combinations of unevenness, and mating surfaces of split molds. In some parts, if the dimensions (due to the hard alumite coating) increase, the mold dimensions no longer fall within the allowable dimension range, making the mold unusable.
これらの不都合を避けるために、（イ）硬質アルマイト
処理の後に再調整する方法、仲）金型加工時に硬質アル
マイト処理による寸法増加を考慮して本来の型寸法より
小さめに加工しておく方法、（／う型合せ面や摺動面を
マスキングしてプラスチックの接する面だけに硬質アル
マイト処理を施す方法、などが考えられている。In order to avoid these inconveniences, (a) a method of readjusting after hard alumite treatment; (middle) a method of machining the mold to be smaller than the original size in consideration of the increase in dimensions due to hard alumite treatment; (/Methods such as masking the mating surfaces and sliding surfaces and applying hard alumite treatment only to the surfaces in contact with the plastic are being considered.
しかし、（イ）の再調整する方法は加工が困難で非常な
技術を要するため、実用的ではない。また、（ロ）の本
来の型寸法よシ小さめに加工する方法では、硬質アルマ
イト処理前に形状および寸法確認のための予備成形が行
なえないという問題点がある。However, the readjustment method (a) is difficult to process and requires a great deal of skill, so it is not practical. Furthermore, in the method (b) of processing the mold to make it smaller than the original dimensions, there is a problem in that it is not possible to perform preforming to confirm the shape and dimensions before hard alumite treatment.
さらに（ハ）の摺動面等をマスキングして硬質アルマイ
ト処理を施す方法によると、樹脂の流動および離型時の
摩擦に対しては耐久性向上の効果があるものの、摺動部
分の面は硬質アルマイトの皮膜が形成されていないため
、かにシが発生して金型が便用不能になることが多い。Furthermore, according to the method (c) of masking the sliding surfaces and applying hard alumite treatment, although it has the effect of improving durability against resin flow and friction during mold release, the sliding surfaces, etc. Because the hard alumite film is not formed, crabs often occur and the mold becomes unusable.
また、従来方法では硬質アルマイト処理によりてアルミ
ニウム合金の表面が粗くなるので、シボや光沢面等を有
する部品では、硬質アルマイト処理によって外観面が変
化し使用不能となる問題もあった。In addition, in the conventional method, the hard alumite treatment roughens the surface of the aluminum alloy, so parts with grains, shiny surfaces, etc. have a problem in that the appearance changes due to the hard alumite treatment, making them unusable.
本発明の目的は、硬質アルマイト皮膜の厚さを従来よシ
大巾に小さくして、硬質アルマイト処理による寸法変化
および表面粗さの劣化を減少させたプラスチック射出成
形用金型を提供することＫある。An object of the present invention is to provide a plastic injection mold in which the thickness of the hard alumite film is made much smaller than in the past, thereby reducing dimensional changes and surface roughness deterioration caused by hard alumite treatment. be.
本発明のプラスチック射出成形用金型は、鋼製のグイセ
ットと、このグイセットの固定側型板に嵌め込まれ且つ
キャピテイ形状が彫込まれているア／Ｉ／ξニクム合金
製の固定側入れ子部材と、上記グイセットの可動側型板
に嵌め込まれ且つコア形状が彫込まれているアルミニウ
ム合金製の可動側入れ子部材とからなり、これら入れ子
部材の表面に厚さ約１０μｍ以下の硬質アルマイト皮膜
を形成したことを特徴とする。The plastic injection mold of the present invention includes a steel goose set, and a fixed side nesting member made of an A/I/ξ nicum alloy that is fitted into the fixed side template of the goose set and has a capity shape engraved therein. , consisting of a movable-side nesting member made of aluminum alloy that is fitted into the movable-side template of the above-mentioned Guiset and has a core shape engraved therein, and a hard alumite film with a thickness of about 10 μm or less is formed on the surface of these nesting members. It is characterized by
また、前記入れ子部材に嵌め込まれるアルミニウム合金
製のスライドコアを有するプラスチック射出成形用金型
においては、このスライドコアの表面にも厚さ約１０μ
ｍ以下の硬質アルマイト皮膜を形成することが好ましい
。In addition, in a plastic injection mold having an aluminum alloy slide core that is fitted into the nesting member, the surface of the slide core also has a thickness of about 10 μm.
It is preferable to form a hard alumite film with a thickness of m or less.
本発明のプラスチック射出成形用金型におｈて、硬質ア
ルマイト皮膜の厚さを１０ Ａｍ以下にすれば。In the plastic injection mold of the present invention, the thickness of the hard alumite film is 10 Am or less.
硬質アルマイト処理によるアルミニウム合金材表面の寸
法増加を５μｍ以下に抑えることができる。The increase in dimension of the surface of the aluminum alloy material due to hard alumite treatment can be suppressed to 5 μm or less.
この変化量では、型合せ面および摺動面の寸法が許容範
囲に入るため、型製作時に硬質アルマイト処理による寸
法変化を考慮せずに金型の設計・加工を一般の金型と同
様に行なったうえでマスキングなしでアルミ二りム合金
製部品全面に硬質アルマイト皮膜を形成して、再調整な
しに型組み、成形が可能になる。さらに、硬質アルマイ
ト処理前に形状・寸法確認のための予備成形を行なうこ
とも可能である。With this amount of change, the dimensions of the mold mating surface and sliding surface are within the allowable range, so the mold should be designed and processed in the same way as general molds without considering the dimensional change due to hard alumite treatment during mold manufacturing. Then, a hard alumite film is formed on the entire surface of aluminum alloy parts without masking, allowing mold assembly and molding without readjustment. Furthermore, it is also possible to perform preforming to confirm the shape and dimensions before hard alumite treatment.
硬質アルマイトの皮膜厚を１０μｍ以下にすると。When the hard alumite film thickness is 10 μm or less.
厚さが２０μｍ以上の従来方法に比べ耐久性が減少する
心配があったが、実際は後記の実施例に示すように十分
な耐久性を示すことが確認された。−方、第３図は硬質
アルマイトの皮膜厚と表面粗さの関係を示すもので、ア
ルミニウム合金ＪＩＳ−Ａ’、、。Although there was a concern that the durability would be reduced compared to the conventional method in which the thickness was 20 μm or more, it was confirmed that sufficient durability was actually exhibited as shown in the examples below. - On the other hand, Figure 3 shows the relationship between the film thickness and surface roughness of hard alumite, aluminum alloy JIS-A'.
７０７５板材で裏作した２５Ｘ２５Ｘ５■の、−面を十
点平約粗さＲｚ −０，０８程度に鏡面加工した試験片
に対し、直流定電法で１流密度ＩＡ／ｄｍ 。A 1-current density IA/dm was measured using the DC constant current method on a test piece of 25 x 25 x 5 square made of 7075 plate material whose negative surface was mirror-finished to a ten-point average roughness Rz of about -0.08.
電解液１８チ硫酸、温度約１０℃にて硬質アルマイト処
理ｔ−施し、鏡面の表面粗さを測定した結果である。同
図に明らかなように、表面粗さは硬質アルマイトの皮膜
厚さに大きく依存し、その厚さを従来よシ大巾に小さく
することが、表面粗さの変化を小さくする上で非常に効
果的であることが実証された。These are the results of hard alumite treatment performed using an electrolytic solution of 18 sulfuric acid at a temperature of about 10° C. and measuring the surface roughness of the mirror surface. As is clear from the figure, surface roughness greatly depends on the thickness of the hard alumite film, and reducing the thickness to a much larger extent than before is extremely effective in reducing changes in surface roughness. Proven to be effective.
一般に、アルミニウム合金を使用した金型を裏作する場
合、アルミ、 ＋クム合金の軽量で熱伝導が良好な性質
に着目してダイセットもアルミニウム合金製とすること
がある。しかしながら、同合金は鋼と比較してヤング率
が約ｖ３と剛性が低いため、成形時の射出圧力によるた
わみ量が大きくなる。射出成形機の構造上、高剛性化の
ためにダイセット寸法を大きくとることに限界があるこ
とを考慮すると、高精度な製品を成形する金型には、ダ
イセラ）Ｋ鋼を使用し、多大な加工数を要するキャピテ
イ・コア部およびスライドコア部のみに加工性の良いア
ルミ＋ウム合金を用いるのが合理的である。Generally, when making a mold using an aluminum alloy, the die set may also be made of aluminum alloy, taking note of the lightweight and good heat conduction properties of aluminum and cum alloys. However, since the same alloy has a Young's modulus of about v3, which is lower in rigidity than steel, the amount of deflection due to injection pressure during molding increases. Due to the structure of injection molding machines, there is a limit to increasing the size of the die set in order to increase rigidity. It is reasonable to use an aluminum+umium alloy with good workability only for the capacity core part and the slide core part, which require a large number of machining operations.
なお、本発明の技術思想はアルミニウム合金を用いた各
種成形用金型、たとえばゴム成形用金型にも適用できる
ものである。The technical idea of the present invention can also be applied to various molding molds using aluminum alloys, such as rubber molding molds.
以下、実施例１および実施例２を挙げて本発明をさらに
具体的に説明する。Hereinafter, the present invention will be explained in more detail with reference to Example 1 and Example 2.
実施例１
第１図は鋼製固定側置板１に嵌め込まれたアルミニウム
合金製固定側入れ子部材３、鋼製可動側型板２に嵌め込
まれたアルミニウム合金製可動側入れ子部材４を使用し
た射出成形用金型を示す。Example 1 Figure 1 shows an injection using an aluminum alloy fixed side insert member 3 fitted into a steel fixed side mounting plate 1 and an aluminum alloy movable side insert member 4 fitted into a steel movable side mold plate 2. A mold for molding is shown.
使用したアルミニウム合金はＪＩＳ−Ａ７０７５板材で
あシ、鋼は５５５Ｃである。固定側入れ子部材３の中ヤ
ピティ形状部にはシボ加工が施されている。この射出成
形用金型を用いて予備成形を行ない形状および寸法を確
認した。しかるのち、アルミニウム合金製の固定側入れ
子部材３および可動側入れ子部材４の表面に対し直流定
電流法で電流密度Ｉ Ａ／ ｄｍ２．電解液１８俤硫酸
、温度約ｌθ℃にて厚さ約６μｍの硬質アルマイトの皮
膜を形成したところ、再調整なしで屋組みができた。ま
た難燃ＡＢＳ樹脂を成形したところ、１０万シ、ットま
での成形にもかかわらず耐久性に問題はなかった。The aluminum alloy used was JIS-A7075 plate material, and the steel was 555C. A textured portion of the stationary insert member 3 is textured. Preliminary molding was performed using this injection mold, and the shape and dimensions were confirmed. Thereafter, a current density I A/dm2. When a hard alumite film with a thickness of about 6 μm was formed using an electrolytic solution of 18% sulfuric acid and a temperature of about 1θ° C., the roof structure was completed without readjustment. Furthermore, when flame-retardant ABS resin was molded, there were no problems with durability despite molding up to 100,000 tons.
シボ面は、硬質アルマイト処理前の予備成形時の成形品
と硬質アルマイト処理後の量産時の成形品を比較したが
、実用上の変化はなかった。Regarding the grained surface, a comparison was made between the preformed molded product before hard alumite treatment and the mass-produced molded product after hard alumite treatment, but no practical changes were found.
実施例２
第２図は、鋼製固定側置板１に嵌め込まれたアルミニウ
ム合金製固定側入れ子部材３、鋼製可動側製板２に嵌め
込まれたアルミニウム合金製可動側入れ子部材４、およ
び鋼製スライドガイド５によシ可動側屋板２にと〕つけ
られたアルミニウム合金製スライドコア６を有する射出
成形用金型を示す・
アルミニウム合金も鋼も実施例１と同じものを用いた。Example 2 FIG. 2 shows an aluminum alloy fixed side insert member 3 fitted into a steel fixed side mounting plate 1, an aluminum alloy movable side insert member 4 fitted into a steel movable side plate 2, and a steel This shows an injection mold having an aluminum alloy slide core 6 attached to the movable side roof plate 2 by a slide guide 5 made of aluminum alloy.The same aluminum alloy and steel as in Example 1 were used.
上記金型で必要なショツト数は２万であったため、固定
側入れ子部材３、可動側入れ子部材４およびスライドコ
ア６にいづれも硬質アルミイト処理を施さすに成形を行
なったところ、約２千シ。The number of shots required for the above mold was 20,000, so when molding was carried out after applying hard alumite treatment to the fixed side nesting member 3, movable side nesting member 4, and slide core 6, approximately 2,000 shots were required. .
ットでスライドコア６の摺動部がかじって使用不能とな
りた。鳳修理後、スライド作動確認のための予備成形を
行なりた。しかるのち、固定側入れ子部材３、可動側入
れ子部材４およびスライドコア６に対し直流定電流法で
電流密度１．２ Ａ／ ｄ ｍ、電解液１５係硫酸、温
度約１０℃にて厚さ５μｍの硬質アルマイトの皮膜を形
成したところ、再調整なしで型組みができた。The sliding part of the slide core 6 got stuck and became unusable. After the repair, preforming was performed to confirm the slide operation. Thereafter, the fixed side nesting member 3, the movable side nesting member 4, and the slide core 6 were heated to a thickness of 5 μm using a DC constant current method at a current density of 1.2 A/dm, an electrolytic solution of 15% sulfuric acid, and a temperature of about 10°C. After forming a hard alumite film, the mold could be assembled without readjustment.
また、難燃ＡＢＳ樹脂を成形したところ、２万シ曹ツト
まで成形できた。さらに追加成形も可能であった。Furthermore, when flame-retardant ABS resin was molded, it was possible to mold up to 20,000 carbon tons. Furthermore, additional molding was also possible.
以上説明したように１本発明のプラスチック射出成形用
金製は従来の硬質アルマイト処理したアルミニウム合金
製金属のように硬質アルマイト処理による型寸法の変化
を考慮せずに星の設計、加工ができ、外観面の硬質アル
マイト処理前後での変化を従来のものよシ減少させるこ
とができ、鋼製金散と同等もしくはそれに近い耐久性を
実現するものである。As explained above, the metal for plastic injection molding of the present invention can be designed and processed into a star shape without considering changes in mold dimensions due to hard alumite treatment, unlike conventional hard alumite treated aluminum alloy metals. Changes in appearance before and after hard alumite treatment can be reduced compared to conventional products, and durability is equivalent to or close to that of steel powder.
したがって、本発明によれば鋼裏金型と比べて加工工数
が少ない低価格な金星を、鋼製金雛と同等もしく４はそ
れに近い耐久性をもたせて使用することが可能になシ、
金製の価格を大巾に低減することができる。Therefore, according to the present invention, it is possible to use low-priced Venus, which requires fewer processing steps than steel-backed molds, with durability equivalent to or close to that of steel-backed metal molds.
The price of gold products can be drastically reduced.
第１図および第２図は本発明の互に異なる実施例を示す
射出成形用金製の断面図、第３図は研質アルマイト皮膜
厚さと表面粗さの関係を示す線図である。
ｌ・・・鋼製固定側展板、２・・・鋼製可動何屋板、３
・・・アルミニウム合金製固定側入れ子部材、４・・・
アルミニウム合金製可動側入れ子部材、５・・・鋼製ス
ライドガイド、６・・・アルばニウム合金製スライドコ
ア。
代理人 弁理士 山 下 嬢 平FIGS. 1 and 2 are cross-sectional views of injection-molded metal parts showing different embodiments of the present invention, and FIG. 3 is a diagram showing the relationship between the thickness of the ground alumite film and the surface roughness. l...Steel fixed side plate, 2...Steel movable side plate, 3
...Aluminum alloy fixed side nesting member, 4...
Aluminum alloy movable nesting member, 5...Steel slide guide, 6...Albanium alloy slide core. Agent Patent Attorney Ms. Taira Yamashita
Claims (2)
板に嵌め込まれ且つキャビティ形状が彫込まれているア
ルミニウム合金製の固定側入れ子部材と、前記ダイセッ
トの可動側型板に嵌め込まれ且つコア形状が、彫込まれ
ているアルミニウム合金製の可動側入れ子部材とからな
り、前記各入れ子部材の表面に厚さ約１０μｍ以下の硬
質アルマイト皮膜を形成したことを特徴とするプラスチ
ック射出成形用金型。(1) A die set made of steel, a fixed side insert member made of aluminum alloy that is fitted into the fixed side template of this die set and has a cavity shape carved into it, and a fixed side insert member that is fitted into the movable side template of the die set. and a movable nesting member made of aluminum alloy with a carved core shape, and a hard alumite film having a thickness of about 10 μm or less is formed on the surface of each of the nesting members. Mold for use.
ウム合金製のスライドコアを有し、前記入れ子部材およ
びアルミニウム合金製スライドコアの表面に厚さ約１０
μｍ以下の硬質アルマイト皮膜が形成されている特許請
求の範囲第１項記載のプラスチック射出成形用金型。(2) It has a slide core made of steel or aluminum alloy that is fitted into the nest member, and the surface of the nest member and the aluminum alloy slide core has a thickness of about 10 mm.
The plastic injection mold according to claim 1, wherein a hard alumite film of μm or less is formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26522787A JPH01108015A (en) | 1987-10-22 | 1987-10-22 | Mold for plastic injection molding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26522787A JPH01108015A (en) | 1987-10-22 | 1987-10-22 | Mold for plastic injection molding |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01108015A true JPH01108015A (en) | 1989-04-25 |
Family
ID=17414290
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP26522787A Pending JPH01108015A (en) | 1987-10-22 | 1987-10-22 | Mold for plastic injection molding |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01108015A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0489308U (en) * | 1990-07-31 | 1992-08-04 | ||
| JP2009137154A (en) * | 2007-12-06 | 2009-06-25 | Nippon Platec Co Ltd | Injection molding mold |
-
1987
- 1987-10-22 JP JP26522787A patent/JPH01108015A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0489308U (en) * | 1990-07-31 | 1992-08-04 | ||
| JP2009137154A (en) * | 2007-12-06 | 2009-06-25 | Nippon Platec Co Ltd | Injection molding mold |
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