JPH0531767A - Molding die - Google Patents
Molding dieInfo
- Publication number
- JPH0531767A JPH0531767A JP21476491A JP21476491A JPH0531767A JP H0531767 A JPH0531767 A JP H0531767A JP 21476491 A JP21476491 A JP 21476491A JP 21476491 A JP21476491 A JP 21476491A JP H0531767 A JPH0531767 A JP H0531767A
- Authority
- JP
- Japan
- Prior art keywords
- gate
- split molds
- mold
- molding die
- ion implantation
- 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
- 238000000465 moulding Methods 0.000 title claims abstract description 22
- 238000005468 ion implantation Methods 0.000 claims abstract description 16
- 238000004381 surface treatment Methods 0.000 claims abstract description 7
- 238000000034 method Methods 0.000 claims description 16
- 239000011347 resin Substances 0.000 claims description 5
- 229920005989 resin Polymers 0.000 claims description 5
- 238000007740 vapor deposition Methods 0.000 claims description 5
- 238000005260 corrosion Methods 0.000 abstract description 5
- 230000007797 corrosion Effects 0.000 abstract description 5
- 238000005137 deposition process Methods 0.000 abstract 1
- 230000006866 deterioration Effects 0.000 abstract 1
- IJGRMHOSHXDMSA-UHFFFAOYSA-N nitrogen Substances N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 10
- 229910052757 nitrogen Inorganic materials 0.000 description 9
- -1 nitrogen ions Chemical class 0.000 description 8
- 150000002500 ions Chemical class 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 238000001746 injection moulding Methods 0.000 description 3
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 229910052735 hafnium Inorganic materials 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 229910052758 niobium Inorganic materials 0.000 description 1
- 150000004767 nitrides Chemical class 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000009751 slip forming Methods 0.000 description 1
- 229910052715 tantalum Inorganic materials 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 238000001721 transfer moulding Methods 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/27—Sprue channels ; Runner channels or runner nozzles
- B29C45/2701—Details not specific to hot or cold runner channels
- B29C45/2708—Gates
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は成形金型に関する。具体
的にいうと、インジェクションモールド用金型やトラン
スファ成形用金型等のゲート構造を有する成形金型に関
する。FIELD OF THE INVENTION The present invention relates to a molding die. More specifically, it relates to a molding die having a gate structure, such as an injection molding die or a transfer molding die.
【０００２】[0002]
【従来の技術】インジェクションモールド用金型等で
は、ランナー成形部とキャビティとの間にゲート口が設
けられている。このゲート口は、成形品にゲートの痕跡
が残らないようにするため、また、成形品とランナーを
容易に切断できるようにするため、非常に小さく設計さ
れている。2. Description of the Related Art In injection molding dies and the like, a gate port is provided between a runner molding portion and a cavity. The gate opening is designed to be very small so that no trace of the gate is left on the molded product and that the molded product and the runner can be easily cut.
【０００３】このようにゲート口が狭くなっているた
め、樹脂注入時にはゲート口の部分に樹脂圧力が集中
し、従来の成形金型ではゲート口の摩耗や腐食が進み易
かった。しかも、従来の成形金型では、ゲート口が金型
本体（上型及び下型）と一体に構成されていたので、ゲ
ート口が損耗した場合には、金型全体を交換しなければ
ならず、金型の寿命が短く、金型コストが高くつくとい
う問題があった。Since the gate opening is narrow in this way, the resin pressure is concentrated on the gate opening when the resin is injected, and the conventional molding die is apt to wear and corrode the gate opening. Moreover, in the conventional molding die, since the gate opening is integrally formed with the die main body (upper die and lower die), if the gate opening is worn, the entire die must be replaced. However, there is a problem that the mold life is short and the mold cost is high.
【０００４】[0004]
【発明が解決しようとする課題】本発明は叙上の従来例
の欠点に鑑みてなされたものであり、その目的とすると
ころは、最も劣化の激しいゲート口の耐食性及び耐摩耗
性を高め、さらに、ゲート口が劣化した時の修復コスト
を低廉にすることにある。SUMMARY OF THE INVENTION The present invention has been made in view of the drawbacks of the above conventional examples, and an object of the present invention is to enhance the corrosion resistance and wear resistance of the gate opening, which is the most deteriorated. Further, it is to reduce the repair cost when the gate opening is deteriorated.
【０００５】[0005]
【課題を解決するための手段】本発明の成形金型は、金
型本体に着脱交換可能なゲート割り型を装着することに
よってゲート口が形成され、ゲート割り型の少なくとも
樹脂と接触する面がイオン注入法やイオン注入蒸着法等
の表面処理を施されていることを特徴としている。In the molding die of the present invention, a gate opening is formed by attaching a detachable and replaceable gate split die to a die main body, and at least a surface of the gate split die which comes into contact with a resin is formed. It is characterized by being subjected to a surface treatment such as an ion implantation method or an ion implantation vapor deposition method.
【０００６】[0006]
【作用】本発明の成形金型にあっては、ゲート割り型に
よってゲート口を構成しているので、ゲート割り型の樹
脂と接触する面（ゲート口）にイオン注入法やイオン注
入蒸着法等の表面処理を施すことができるようになっ
た。そして、ゲート割り型にイオン注入法やイオン注入
蒸着法等の表面処理を施されているので、最も損耗の激
しいゲート口の耐食性及び耐摩耗性を高めることがで
き、ゲート口及び成形金型の寿命を長くすることができ
た。In the molding die of the present invention, since the gate opening is formed by the gate split mold, the surface of the gate split mold that contacts the resin (gate opening) is subjected to an ion implantation method, an ion implantation deposition method, or the like. It is now possible to apply the surface treatment of. Since the gate split mold is subjected to a surface treatment such as an ion implantation method or an ion implantation vapor deposition method, it is possible to enhance the corrosion resistance and wear resistance of the gate opening, which is the most worn. I was able to extend the life.
【０００７】また、ゲート口が損耗した場合には、ゲー
ト割り型のみを交換すればよいので、修復コストを安価
にできる。さらに、金型本体の交換時期が長くなるの
で、金型費用も大幅に削減される。Further, when the gate opening is worn out, only the gate split mold needs to be replaced, so that the repair cost can be reduced. Furthermore, since the replacement period of the mold body becomes longer, the mold cost is significantly reduced.
【０００８】[0008]
【実施例】図１は本発明の一実施例によるインジェクシ
ョンモールド用成形金型の一部を示す断面図である。こ
の成形金型１は上型２と下型３（金型本体）に分割され
ており、図外の部分では一般的に用いられている成形金
型と同様な構造を有している。上下型２，３間にはラン
ナー成形部４、ゲート口５及びキャビティ６等が連続的
に形成されている。このうち、ランナー成形部４及びキ
ャビティ６は上下型２，３に直接刻設されているが、ゲ
ート口５は着脱交換可能な一対のピン状をしたゲート割
り型７，８によって構成されている。すなわち、上型２
及び下型３内にはゲート位置に向けて各ピン挿入孔９，
１０が穿孔され、両ピン挿入孔９，１０内にはゲート割
り型７，８が装着されており、上下型２，３が閉じた状
態では上下のゲート割り型７，８間にキャビティ６及び
ランナー成形部４と連通したゲート口５が構成される。
なお、１１は型開き後に成形品を突き出すためのエジェ
クタピン、１２はランナーを突き出すためのエジェクタ
ピンである。1 is a sectional view showing a part of a molding die for injection molding according to an embodiment of the present invention. The molding die 1 is divided into an upper die 2 and a lower die 3 (die body), and has a structure similar to a generally used molding die in a portion not shown. A runner molding portion 4, a gate opening 5, a cavity 6 and the like are continuously formed between the upper and lower molds 2 and 3. Of these, the runner molding portion 4 and the cavity 6 are directly engraved in the upper and lower molds 2 and 3, but the gate port 5 is composed of a pair of detachable and replaceable pin-shaped gate split molds 7 and 8. . That is, upper mold 2
And each pin insertion hole 9 in the lower mold 3 toward the gate position.
10 is perforated, and gate split molds 7 and 8 are mounted in both pin insertion holes 9 and 10. When the upper and lower molds 2 and 3 are closed, the cavity 6 and the upper and lower gate split molds 7 and 8 are formed. A gate port 5 communicating with the runner molding section 4 is formed.
In addition, 11 is an ejector pin for ejecting a molded product after mold opening, and 12 is an ejector pin for ejecting a runner.
【０００９】図２は上記ゲート割り型７，８の斜視図で
あって、上方のゲート割り型７の下端面には凹部１３が
設けられ、下方のゲート割り型８の上端面にも凹部１４
が設けられており、上下のゲート割り型７，８を突き合
せることにより突き合せ部において凹部１３，１４によ
るゲート口５が構成される。さらに、上方のゲート割り
型７の下端面と下方のゲート割り型８の上端面は、Ｎ2
ガスを用いたイオン注入法（イオンインプランテーショ
ン）によって表面処理を施されている。FIG. 2 is a perspective view of the above gate split molds 7 and 8. A recess 13 is provided in the lower end surface of the upper gate split mold 7, and a recess 14 is also provided in the upper end surface of the lower gate split mold 8.
Is provided, and the upper and lower gate split molds 7 and 8 are butted against each other to form the gate port 5 by the recesses 13 and 14 at the butted portions. Further, the lower end face of the upper gate split mold 7 and the upper end face of the lower gate split mold 8 are N 2
Surface treatment is performed by an ion implantation method (ion implantation) using gas.
【００１０】このイオン注入法とは、イオンインプラン
テーション装置内にゲート割り型７，８を納入し、窒素
イオンをゲート割り型７，８の端面に打ち込んで端面の
硬度を高める方法であり、耐摩耗性及び耐腐食性を向上
させることができる。The ion implantation method is a method in which the gate split molds 7 and 8 are delivered into the ion implantation apparatus, and nitrogen ions are implanted into the end faces of the gate split molds 7 and 8 to increase the hardness of the end faces. Abrasion resistance and corrosion resistance can be improved.
【００１１】従って、ゲート口５の寿命が長くなり、ひ
いては、成形金型１の寿命も長くなる。しかも、ゲート
口５が損耗した場合には、ゲート割り型７，８を上下型
２，３から抜いて交換することができるので、金型の交
換コストも安価になる。Therefore, the life of the gate opening 5 is extended, and the life of the molding die 1 is also extended. Moreover, when the gate opening 5 is worn, the gate split molds 7 and 8 can be removed from the upper and lower molds 2 and 3 and replaced, so that the mold replacement cost can be reduced.
【００１２】また、ゲート割り型７，８の表面処理方法
としては、イオン注入蒸着法を用いてもよい。これは、
ゲート割り型７，８の周囲を金属蒸気雰囲気とし、ゲー
ト割り型の表面に窒素イオンを打ち込む方法である。あ
るいは、金属蒸気雰囲気を用いず、窒素イオンと同時に
イオン源から金属イオンをゲート割り型７，８の表面に
注入してもよい。例えば、イオンインプランテーション
装置内において、Ｔｉ蒸気雰囲気中で窒素イオンを打ち
込むと、Ｔｉの一部は窒素イオンと衝突してイオン化さ
れる。このＴｉイオンは窒素イオンと同時にゲート割り
型７，８の端面に打ち込まれ、その一部は窒素イオンと
反応してゲート割り型７，８の表面にＴｉＮの強固な核
が生成される。このＴｉＮは入射エネルギーの大きさに
より被処理物の内部及び表面に形成され、表面の硬化に
大きな効果を与える。また、反応しなかった多数のＴｉ
イオン及び／又は窒素イオンはゲート割り型７，８の母
材の中に注入されてイオン注入法と同等の効果が得られ
る。As a surface treatment method for the gate split molds 7 and 8, an ion implantation vapor deposition method may be used. this is,
This is a method in which a metal vapor atmosphere is provided around the gate split molds 7 and 8 and nitrogen ions are implanted into the surface of the gate split molds. Alternatively, without using the metal vapor atmosphere, metal ions may be injected into the surfaces of the gate split molds 7 and 8 from the ion source simultaneously with nitrogen ions. For example, in the ion implantation apparatus, when nitrogen ions are implanted in a Ti vapor atmosphere, part of Ti collides with nitrogen ions and is ionized. The Ti ions are simultaneously implanted into the end faces of the gate split molds 7 and 8 at the same time as the nitrogen ions, and a part of them reacts with the nitrogen ions to generate strong TiN nuclei on the surfaces of the gate split molds 7 and 8. This TiN is formed inside and on the surface of the object to be processed depending on the magnitude of incident energy, and has a great effect on the hardening of the surface. In addition, many Ti that did not react
Ions and / or nitrogen ions are injected into the base material of the gate split molds 7 and 8 to obtain the same effect as the ion injection method.
【００１３】イオン注入蒸着法に用いられる金属として
は、高硬度の窒化物を作るＩＶａ、Ｖａ、ＶＩａ族の金
属、すなわちＴｉ、Ｚｎ、Ｈｆ、Ｖ、Ｎｂ、Ｔａ、Ｃ
ｒ、Ｍｏ、Ｗ等を用いるのが効果的である。Metals used in the ion implantation vapor deposition method are IVa, Va, and VIa group metals that form high hardness nitrides, that is, Ti, Zn, Hf, V, Nb, Ta, and C.
It is effective to use r, Mo, W or the like.
【００１４】なお、注入される非金属イオンは、窒素が
主なものであるが、この５０％未満をＯ、Ｂ、Ｃの１種
又は２種で置き換えたものでもよい。The main non-metal ions to be implanted are nitrogen, but less than 50% of these may be replaced with one or two of O, B and C.
【００１５】[0015]
【発明の効果】本発明によれば、成形金型のゲート口の
耐食性及び耐摩耗性を高めることができるので、ゲート
口及び成形金型を長寿命化できる。また、ゲート口が損
耗した場合には、ゲート割り型のみを交換すればよいの
で、修復コストを安価にできる。さらに、金型本体の交
換時期が長くなるので、金型費用も大幅に削減される。According to the present invention, since the corrosion resistance and wear resistance of the gate opening of the molding die can be enhanced, the life of the gate opening and the molding die can be extended. Further, when the gate opening is worn, only the gate split mold needs to be replaced, so that the repair cost can be reduced. Furthermore, since the replacement period of the mold body becomes longer, the mold cost is significantly reduced.
【図１】本発明の一実施例による成形金型を示す一部破
断した断面図である。FIG. 1 is a partially cutaway sectional view showing a molding die according to an embodiment of the present invention.
【図２】同上の実施例における一対のゲート割り型を示
す一部破断した斜視図である。FIG. 2 is a partially cutaway perspective view showing a pair of gate split molds in the same embodiment.
２ 上型 ３ 下型 ４ ランナー成形部 ５ ゲート口 ７，８ ゲート割り型 2 Upper mold 3 Lower mold 4 Runner molding part 5 Gate opening 7,8 Gate split mold
Claims (1)
を装着することによってゲート口が形成され、ゲート割
り型の少なくとも樹脂と接触する面がイオン注入法やイ
オン注入蒸着法等の表面処理を施されていることを特徴
とする成形金型。Claim: What is claimed is: 1. A gate opening is formed by attaching a detachable and replaceable gate split mold to a mold body, and at least a surface of the gate split mold that comes into contact with a resin is an ion implantation method or an ion implantation method. A molding die characterized by being subjected to a surface treatment such as a vapor deposition method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21476491A JPH0531767A (en) | 1991-07-30 | 1991-07-30 | Molding die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21476491A JPH0531767A (en) | 1991-07-30 | 1991-07-30 | Molding die |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0531767A true JPH0531767A (en) | 1993-02-09 |
Family
ID=16661155
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21476491A Pending JPH0531767A (en) | 1991-07-30 | 1991-07-30 | Molding die |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0531767A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1226008A1 (en) * | 1999-09-30 | 2002-07-31 | Textron Automotive Company Inc. | Method and apparatus for molding plastic materials with a metallic appearance |
| EP1394123A1 (en) * | 2002-08-29 | 2004-03-03 | Eastman Kodak Company | Mechanism to mold glass lenses using an implanted precision glass molding tool |
-
1991
- 1991-07-30 JP JP21476491A patent/JPH0531767A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1226008A1 (en) * | 1999-09-30 | 2002-07-31 | Textron Automotive Company Inc. | Method and apparatus for molding plastic materials with a metallic appearance |
| EP1226008A4 (en) * | 1999-09-30 | 2004-05-12 | Textron Automotive Co Inc | Method and apparatus for molding plastic materials with a metallic appearance |
| US7108824B1 (en) | 1999-09-30 | 2006-09-19 | Collins & Aikman Products Co. | Method and apparatus for molding plastic materials with a metallic appearance |
| EP1394123A1 (en) * | 2002-08-29 | 2004-03-03 | Eastman Kodak Company | Mechanism to mold glass lenses using an implanted precision glass molding tool |
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