JPS63109014A - Preparation of mold having path for temperature controlling medium - Google Patents
Preparation of mold having path for temperature controlling mediumInfo
- Publication number
- JPS63109014A JPS63109014A JP25450886A JP25450886A JPS63109014A JP S63109014 A JPS63109014 A JP S63109014A JP 25450886 A JP25450886 A JP 25450886A JP 25450886 A JP25450886 A JP 25450886A JP S63109014 A JPS63109014 A JP S63109014A
- Authority
- JP
- Japan
- Prior art keywords
- mold
- path
- temp
- medium passage
- welding
- 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
- 230000001105 regulatory effect Effects 0.000 claims description 21
- 238000000034 method Methods 0.000 claims description 8
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 238000000465 moulding Methods 0.000 claims description 4
- 238000003466 welding Methods 0.000 abstract description 19
- 239000000463 material Substances 0.000 abstract description 12
- 229910000831 Steel Inorganic materials 0.000 abstract description 4
- 239000010959 steel Substances 0.000 abstract description 4
- 238000005496 tempering Methods 0.000 abstract description 3
- 239000011347 resin Substances 0.000 description 6
- 229920005989 resin Polymers 0.000 description 6
- 238000002347 injection Methods 0.000 description 5
- 239000007924 injection Substances 0.000 description 5
- 238000003754 machining Methods 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- 238000001746 injection moulding Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000010791 quenching Methods 0.000 description 2
- 230000000171 quenching effect Effects 0.000 description 2
- 230000035882 stress Effects 0.000 description 2
- 239000002826 coolant Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010894 electron beam technology Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Moulds For Moulding Plastics 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、例えば射出成形用金型のボトムキャビティ金
型やコア金型等冷却媒体通路を有する金型を製造するた
めの方法に関するものである。Detailed Description of the Invention (Field of Industrial Application) The present invention relates to a method for manufacturing a mold having a cooling medium passage, such as a bottom cavity mold or a core mold of an injection mold. be.
（従来の技術とその問題点）
射出成形用ボトムキャビティ金型では、成形サイクル時
間を短縮できるようキャビティ内の樹脂を効率良く温調
（冷却）するために、第５図に示すように、射出口手前
で樹脂通路を取り囲む位置に温調媒体通路を設けている
が、従来、この温調媒体通路は、機械加工により、第６
図に示す如くボトムキャビティ金型１０内の樹脂通路中
心線りを中心とする円周上に樹脂通路に沿って間隔をお
いて温調媒体通路１１を穿設したり、第７図に示す如く
ボトムキャビティ金型１２内の樹脂通路中心線りのまわ
りにコ状の温調媒体通路１３を穿設し、その中間通路の
開口端をプラグ１４で塞ぐと共に、金型まわりに、温調
媒体通路１３の両開口端が臨んだ温調媒体通路１５をさ
らに付設していたが、温調したい部分（例えばゲート付
近）に近づけて温調媒体が回せず、いずれも温調（冷却
）効率が悪く、射出口付近の温度分布も均一にならない
という欠点があった。(Prior art and its problems) In bottom cavity molds for injection molding, injection molding is used as shown in Figure 5 in order to efficiently control (cool) the temperature of the resin in the cavity to shorten the molding cycle time. A temperature regulating medium passage is provided at a position surrounding the resin passage in front of the outlet, but conventionally, this temperature regulating medium passage has been machined into the sixth
As shown in the figure, temperature regulating medium passages 11 are bored at intervals along the resin passage on the circumference around the center line of the resin passage in the bottom cavity mold 10, or as shown in Fig. 7. A U-shaped temperature regulating medium passage 13 is bored around the center line of the resin passage in the bottom cavity mold 12, and the open end of the middle passage is closed with a plug 14, and a temperature regulating medium passage is formed around the mold. 13 was additionally provided with a temperature control medium passage 15 facing both open ends, but the temperature control medium could not be circulated close to the area where the temperature was to be controlled (for example, near the gate), and the temperature control (cooling) efficiency was poor in both cases. However, there was a drawback that the temperature distribution near the injection port was not uniform.
そこで、金型を樹脂通路中心線と同心の二重筒構造とし
て、内筒と外筒の対向した周面の一方又は両方に温調媒
体通路用溝を形成し、この内筒と外筒を溶接して内部に
環状の温調媒体通路を設けることも提案されているが（
特開昭５９−１６４１０９号公報参照）、内筒と外筒と
の間（特に温調媒体通路外の対向面間）に錆を生じ長期
使用に耐えないと共に、内筒と外筒間の完全な接合はし
難く、温調媒体の漏れを生じるおそれがあるという不都
合を免れない。Therefore, the mold has a double cylinder structure that is concentric with the center line of the resin passage, and a groove for the temperature regulating medium passage is formed on one or both of the opposing circumferential surfaces of the inner cylinder and the outer cylinder, and this inner cylinder and outer cylinder are connected. It has also been proposed to weld an annular temperature-regulating medium passage inside (
(Refer to Japanese Unexamined Patent Application Publication No. 59-164109), rust occurs between the inner cylinder and the outer cylinder (especially between the facing surfaces outside the temperature regulating medium passage), making it impossible to withstand long-term use, and the gap between the inner cylinder and the outer cylinder is completely damaged. It is difficult to make a proper joint, and there is a risk of leakage of the temperature control medium.
（発明の目的）
本発明は前記従来の問題点を解決するためになしたもの
で、温調（冷却）効率を向上させるために、射出成形用
のボトムキャビティ金型等に射出口に近い環状の温調媒
体通路を設けることを可能とすることを目的とする。(Purpose of the Invention) The present invention was made to solve the above-mentioned conventional problems, and in order to improve temperature control (cooling) efficiency, an annular shape close to the injection port is installed in a bottom cavity mold for injection molding. The purpose is to make it possible to provide a temperature regulating medium passage.
（問題点を解決するための手段）
本発明に操る温調媒体通路を有する金型の製造方法は、
円柱状突起を先端面に有する第１部材と、この第１部材
の先端面及び前記突起の周面に面接触させ、かつ、該突
起に嵌合させて組合わせ可能な環状の第２部材の内、一
方又は双方の部材の対向面に温調媒体通路形成用溝を形
成した後、第１部材及び第２部材を溶接組合わせ、しか
る後焼入れ・焼戻しを行ない、温調媒体通路を有する金
型のベース部材を成形することを特徴とするものである
。(Means for Solving the Problems) A method for manufacturing a mold having a temperature regulating medium passage operated by the present invention is as follows:
A first member having a cylindrical protrusion on its distal end surface; and an annular second member that is in surface contact with the distal end surface of the first member and the circumferential surface of the protrusion, and that can be assembled by fitting into the protrusion. After forming a groove for forming a temperature regulating medium passage on the opposing surfaces of one or both members, the first member and the second member are welded together, and then quenched and tempered to form a metal having a temperature regulating medium passage. It is characterized by molding the base member of the mold.
（実施例）
以下、本発明の一実施例を第１図〜第４図に沿い説明す
る。(Example) An example of the present invention will be described below with reference to FIGS. 1 to 4.
まず、円柱状突起１を先端面に有する第１部材２と、こ
の第１部材２の先端面及び前記突起１の周面に面接触さ
せ、かつ、該突起に嵌合させて組合わせ可能な環状の第
２部材３とを、冷間合型用鋼や熱間合型用鋼を使用して
機械加工等により製作する。First, a first member 2 having a cylindrical protrusion 1 on its distal end surface is brought into surface contact with the distal end surface of this first member 2 and the circumferential surface of the protrusion 1, and is assembled by being fitted into the protrusion. The annular second member 3 is manufactured by machining or the like using steel for cold forming molds or steel for hot forming molds.
この部材１．３の内、一方又は双方の部材には、所定断
面形状の温調媒体通路形成用溝４と溶接用の開先５が機
械加工等により溶接組立てをし易いような形状に、又射
出圧力により生ずる応力の影響をできるだけ少なくする
形状に形成しておく （第１図及び第３図参照）。One or both of the members 1.3 has a groove 4 for forming a temperature regulating medium passage having a predetermined cross-sectional shape and a groove 5 for welding in a shape that facilitates welding and assembly by machining or the like. Also, it is formed in a shape that minimizes the influence of stress caused by injection pressure (see Figures 1 and 3).
次いで、第１部材２と第２部材３を組合わせた後、電子
ビーム溶接、ＭＩＧ又はＴＩＧ溶接、プラズマ溶接等、
高温溶着部を狭くでき、溶接雰囲気がシールドでき、電
流・電圧等溶接条件をコントロールできる溶接法により
、部材２．３の接合部を予熱しながら溶接する。Next, after combining the first member 2 and the second member 3, electron beam welding, MIG or TIG welding, plasma welding, etc.
Using a welding method that allows the high-temperature weld zone to be narrowed, the welding atmosphere to be shielded, and welding conditions such as current and voltage to be controlled, welding is performed while preheating the joint portion of member 2.3.
上記溶接法は、溶接欠陥が生じ易く、応力が働くと壊れ
易い高温溶着部を狭くして、金型の成形面に露出する溶
接部を少くするために使用され、例えば第３図に示すよ
うに温調媒体通路形成用溝４から先端面（上面）までの
薄肉部分でも溶接可能である。The above welding method is used to narrow the high-temperature weld that is prone to weld defects and break when stress is applied, and to reduce the weld exposed to the molding surface of the mold, for example as shown in Figure 3. It is also possible to weld the thin wall portion from the temperature regulating medium passage forming groove 4 to the tip surface (upper surface).
また、溶接の際部材を予熱するのは、熱応力の発生を回
避し、かつ、溶接欠陥の発生を防止するためである。Further, the reason why the members are preheated during welding is to avoid the generation of thermal stress and to prevent the generation of welding defects.
第１部材ｌと第２部材３の溶接組立て後、所定の強度を
確保するために規定の焼入・焼戻しを行ない、温調媒体
通路６を有するボトムキャビティ金型７のベース部材を
成形する。After welding and assembling the first member 1 and the second member 3, prescribed quenching and tempering are performed to ensure a predetermined strength, and a base member of a bottom cavity mold 7 having a temperature regulating medium passage 6 is formed.
しかる後、このベース部材を機械加工等により最終形状
に仕上加工し、ボトムキャビティ金型７が得られ、第５
図に示す如く使用される。Thereafter, this base member is finished into the final shape by machining, etc., and the bottom cavity mold 7 is obtained.
It is used as shown in the figure.
同様に、第３図及び第４図に示した温調媒体通路８を有
するコア金型９等も前記と同じ手順で製造できる。Similarly, the core mold 9 having the temperature regulating medium passage 8 shown in FIGS. 3 and 4 can be manufactured by the same procedure as described above.
（発明の効果）
以上の通り本発明は、金型材料であるベース部材を、一
方の先端部に他方を雌雄嵌合可能な２部材で構成し、少
くとも一方の部材の対向面に温調媒体通路形成用溝を形
成しておき、溶接組立て、焼入・焼戻しによって温調媒
体通路を有するベース部材を成形するから、温調媒体通
路が機械加工では製作不可能或は製作困難な形状であっ
ても、容易に加工できると共に、温調媒体通路を射出口
に近く環状に設けて温調（冷却）効率を向上させること
ができるし、溶接法と溶接後の熱処理により金型の品質
向上と耐久性の向上が確実に図れる。また、溶接部が溶
接し易いよう外面に露呈しており、前記２部材の接触面
からの水の漏洩がない構造にできる。(Effects of the Invention) As described above, the present invention consists of a base member, which is a mold material, consisting of two members that can be male-female fitted to the tip of the other, and the temperature control is provided on the opposing surface of at least one member. Since the groove for forming the medium passage is formed and the base member having the temperature regulating medium passage is formed by welding, assembling, quenching and tempering, the shape of the temperature regulating medium passage is impossible or difficult to manufacture by machining. Even if there is, it can be easily processed, and the temperature control medium passage can be provided in a ring shape near the injection port to improve temperature control (cooling) efficiency, and the quality of the mold can be improved by the welding method and post-weld heat treatment. This will ensure improved durability. Further, the welding portion is exposed on the outer surface for easy welding, and a structure can be created in which water does not leak from the contact surface of the two members.
第１図、第３図は本発明の異なる実施例に係る金型製品
を示す正断面図、第２図、第４図は夫々第１図の■〜線
、第３図の■〜線に沿う断面図、第５図は製品の使用状
態を示す断面図、第６図、第７図は従来製品の断面図で
ある。
１・・・円柱状突起、２・・・第１部材、３・・・第２
部材、４・・・温調媒体通路形成用溝、５・・・開先、
６．８・・・温調媒体通路、７・・・ボトムキャビイ金
型、９・・・コア金型。
第３図
ヱ
７２図 第４図
第５図
第６図
第７図Figures 1 and 3 are front cross-sectional views showing mold products according to different embodiments of the present invention, and Figures 2 and 4 are taken along lines 1 and 2 in Figure 1 and 2 and 3 in Figure 3, respectively. FIG. 5 is a sectional view showing how the product is used, and FIGS. 6 and 7 are sectional views of conventional products. 1... Cylindrical projection, 2... First member, 3... Second
Member, 4... Groove for forming temperature regulating medium passage, 5... Groove,
6.8... Temperature control medium passage, 7... Bottom cavity mold, 9... Core mold. Figure 3ヱ72 Figure 4 Figure 5 Figure 6 Figure 7
Claims (1)
の先端面及び前記突起の周面に面接触させ、かつ、該突
起に嵌合させて組合わせ可能な環状の第２部材の内、一
方又は双方の部材の対向面に温調媒体通路形成用溝を形
成した後、第１部材及び第２部材を溶接組合わせ、しか
る後、焼入れ・焼戻しを行ない、温調媒体通路を有する
金型のベース部材を成形することを特徴とする温調媒体
通路を有する金型の製造方法。A first member having a cylindrical protrusion on its distal end surface; and an annular second member that is in surface contact with the distal end surface of the first member and the circumferential surface of the protrusion, and that can be assembled by fitting into the protrusion. After forming a groove for forming a temperature regulating medium passage on the opposing surfaces of one or both members, the first member and the second member are welded together, and then quenched and tempered to form a temperature regulating medium passage. A method for manufacturing a mold having a temperature regulating medium passage, the method comprising molding a base member of the mold.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25450886A JPS63109014A (en) | 1986-10-25 | 1986-10-25 | Preparation of mold having path for temperature controlling medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25450886A JPS63109014A (en) | 1986-10-25 | 1986-10-25 | Preparation of mold having path for temperature controlling medium |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63109014A true JPS63109014A (en) | 1988-05-13 |
| JPH0460418B2 JPH0460418B2 (en) | 1992-09-28 |
Family
ID=17266027
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP25450886A Granted JPS63109014A (en) | 1986-10-25 | 1986-10-25 | Preparation of mold having path for temperature controlling medium |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63109014A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010188666A (en) * | 2009-02-19 | 2010-09-02 | Mitsubishi Heavy Industries Plastic Technology Co Ltd | Method of producing mold, mold split body, and mold |
| JP2011016357A (en) * | 2009-07-07 | 2011-01-27 | Pegatron Corp | Injection mold and manufacturing process for injection mold |
| KR102146100B1 (en) * | 2019-10-02 | 2020-08-19 | (주)대림진공열처리 | Vacuum brazing cooling line gate bush and its manufacturing method |
-
1986
- 1986-10-25 JP JP25450886A patent/JPS63109014A/en active Granted
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010188666A (en) * | 2009-02-19 | 2010-09-02 | Mitsubishi Heavy Industries Plastic Technology Co Ltd | Method of producing mold, mold split body, and mold |
| JP2011016357A (en) * | 2009-07-07 | 2011-01-27 | Pegatron Corp | Injection mold and manufacturing process for injection mold |
| KR102146100B1 (en) * | 2019-10-02 | 2020-08-19 | (주)대림진공열처리 | Vacuum brazing cooling line gate bush and its manufacturing method |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0460418B2 (en) | 1992-09-28 |
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