JP2856367B2 - Fluid passage working method for porous mold - Google Patents
Fluid passage working method for porous moldInfo
- Publication number
- JP2856367B2 JP2856367B2 JP10191291A JP10191291A JP2856367B2 JP 2856367 B2 JP2856367 B2 JP 2856367B2 JP 10191291 A JP10191291 A JP 10191291A JP 10191291 A JP10191291 A JP 10191291A JP 2856367 B2 JP2856367 B2 JP 2856367B2
- Authority
- JP
- Japan
- Prior art keywords
- porous mold
- pipe
- hole
- fluid passage
- mold
- 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 - Fee Related
Links
Landscapes
- Moulds For Moulding Plastics Or The Like (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は２０μ以下の細孔を全面
に有する金型に温度調整用の流体を流すための流体通路
を工作する方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for forming a fluid passage for flowing a fluid for temperature adjustment through a mold having pores of 20 .mu.m or less on the entire surface.
【０００２】[0002]
【従来技術と問題点】従来金型によりプラスチックを射
出成形する場合キャビティ（金型内部）からのガス抜け
が不十分となり、成形品にウェルドラインあるいはガス
焼け等の不良が生じる問題があり、これを防止する目的
で金型に細孔、スリットあるいはベントプラグ等の加工
を施すことが一般に行なわれているが微細な空孔が全面
にわたって均一に有する金型材を使用して金型を製作す
ることにより空気抜けがさらに向上すると共に空孔が微
細であるためスリット及びベントプラグ等の点写がない
ことから近年多孔質金型が使われることが多くなってき
ている。しかし、このような多孔質の金型は温度調整用
の流体通路を設けることがてきない（設けても微細な孔
から流体が漏洩してしまう）という問題があり使用範囲
が限定されていた。本発明は上記の問題に鑑みて成され
たもので流体の洩れがない通路を簡単に工作する方法を
提供することを目的とするものである。2. Description of the Related Art Conventionally, when plastic is injection-molded with a mold, there is a problem that gas escape from a cavity (inside of the mold) becomes insufficient and a molded product is defective such as a weld line or gas burning. It is common practice to process the mold with pores, slits, vent plugs, etc. in order to prevent blemishes, but it is necessary to manufacture the mold using a mold material having fine holes uniformly over the entire surface. In this case, the air escape is further improved, and the pores are fine, so that there is no spotting such as a slit and a vent plug. However, such a porous mold has a problem that a fluid passage for temperature adjustment cannot be provided (even if provided, a fluid leaks from a fine hole), and its use range is limited. SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and an object of the present invention is to provide a method for easily making a passage having no fluid leakage.
【０００３】[0003]
【問題解決のための手段】上記の目的を達成するために
本発明における多孔質金型の流体通路工作法は、多孔質
金型の左右側あるいは上下側に対しドリルにより左右あ
るいは上下に貫通する貫通孔を穿孔し、該貫通孔に対し
該貫通孔よりも若干細くした熱伝導性のよいパイプを圧
入または挿入し、該パイプを各種固定法により多孔質金
型に固定することを特徴とするものである。In order to achieve the above object, a method of working a fluid passage in a porous mold according to the present invention is to penetrate a porous mold by drilling left, right, up and down on the left and right sides or up and down sides of the porous mold. It is characterized in that a through hole is drilled, and a pipe having good thermal conductivity, which is slightly thinner than the through hole, is pressed into or inserted into the through hole, and the pipe is fixed to a porous mold by various fixing methods. Things.
【０００４】[0004]
【実施例】以下本発明の実施例について図面に基づいて
詳細に説明する。表面にキャビティー１Ａを形成した多
孔質金型１は平均開空孔径が２０μ以下の細孔が全面に
均一に設けられ、開空孔率１５〜３０％になっていて、
この多孔質金型１に対し小径（８．１mm）ドリル２によ
り左右側面に貫通する貫通孔１Ｂを２本穿孔した（図
１）（図２）後、大径（１０．５mm）ドリル３により貫
通孔１Ｂの両端を深さ略２０mm程度穿孔して貫通孔口１
Ｃを広い孔にする。（図２）（図３）。次に各貫通孔口
１Ｃの一部にタップを使用してねじを切った後該貫通孔
１Ｂに銅あるいは真ちゅう製の熱伝導性のよいパイプ
（８．０mm）４を挿入しこれにすり割付の締め付けねじ
５により前記貫通孔口１Ｃのねじ部にねじ止め固定する
（図３）（図４）。またねじ止め固定された各パイプ４
の両端部は、流体供給管、流体排出管、あるいは連通配
管等を介してそれぞれ適宜の部位に連通されてパイプ４
は流体の通路として利用される。したがって流体はパイ
プ４内を流れるため多孔質金型１の表面に洩れる等の問
題は発生しない。尚上記実施例でパイプ４の固定をすり
割付締め付けねじによりねじ止め固定としているが、単
に接着剤や半田付けにより固定したり、パイプ４の端部
を膨張拡大させて嵌合固定させるようにしてもよい。こ
れらの場合貫通孔１Ｂの貫通孔１Ｃを拡大させたり、ね
じ切りをしたりする必要はなくなる。DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail with reference to the drawings. In the porous mold 1 having a cavity 1A formed on the surface, pores having an average open pore diameter of 20 μm or less are uniformly provided on the entire surface, and the open porosity is 15 to 30%.
After drilling two through holes 1B through the porous mold 1 on the left and right sides with a small-diameter (8.1 mm) drill 2 (FIG. 1) (FIG. 2), a large-diameter (10.5 mm) drill 3 is used. The both ends of the through hole 1B are pierced to a depth of about 20 mm to form a through hole 1
Make C a wide hole. (FIG. 2) (FIG. 3). Next, a part of each through-hole opening 1C is threaded using a tap, and then a pipe (8.0 mm) 4 made of copper or brass having good heat conductivity is inserted into the through-hole 1B and sliced to this. (FIG. 3) (FIG. 4). Each screw 4
Are connected to appropriate portions via a fluid supply pipe, a fluid discharge pipe, a communication pipe, or the like.
Are used as fluid passages. Therefore, since the fluid flows in the pipe 4, there is no problem such as leakage to the surface of the porous mold 1. In the above embodiment, the pipe 4 is fixed by screwing with a slotted tightening screw. However, the pipe 4 may be fixed by simply using an adhesive or soldering, or may be fitted and fixed by expanding and expanding the end of the pipe 4. Is also good. In these cases, it is not necessary to enlarge the through-hole 1C of the through-hole 1B or perform thread cutting.
【０００５】[0005]
【発明の効果】本発明は上記の説明から明らかなよう
に、多孔質金型の左右側あるいは上下側にドリルにより
貫通孔を穿孔し、この貫通孔に熱伝導性のよいパイプを
圧入あるいは挿入して固定するものであるから温度調整
用の流体はパイプ内を流れ多孔質部へ洩れ出すことがな
いと共に流体通路をきわめて簡単に工作することがでそ
の効果は著大である。As is apparent from the above description, according to the present invention, through holes are drilled on the left and right sides or upper and lower sides of a porous mold, and a pipe having good heat conductivity is pressed or inserted into the through holes. Since the fluid for temperature adjustment does not flow through the pipe and leaks to the porous portion, the fluid passage can be machined very easily, and the effect is remarkable.
【図１】本発明の実施例を説明するための模式図で貫通
孔の穿孔前の状態を示すものである。FIG. 1 is a schematic view for explaining an embodiment of the present invention, showing a state before a through hole is drilled.
【図２】本発明の実施例を説明するための模式図で貫通
孔口の穿孔前の状態を示すものである。FIG. 2 is a schematic diagram for explaining an embodiment of the present invention, and shows a state before a through hole is formed.
【図３】本発明の実施例を説明するための模式図で貫通
孔にパイプを挿入する前の状態を示すものである。FIG. 3 is a schematic view for explaining an embodiment of the present invention, showing a state before a pipe is inserted into a through hole.
【図４】本発明の実施例を説明するための模式図でパイ
プを多孔質金型に固定した状態を示すものである。FIG. 4 is a schematic diagram for explaining an embodiment of the present invention, showing a state in which a pipe is fixed to a porous mold.
１ 多孔質金型 ２ ドリル ４ パイプ ５ すり割付締め付けねじ DESCRIPTION OF SYMBOLS 1 Porous mold 2 Drill 4 Pipe 5 Slotting fastening screw
Claims (1)
対しドリル２により左右あるいは上下に貫通する貫通孔
１Ｂを穿孔し、該貫通孔１Ｂに対し該貫通孔１Ｂよりも
若干細くした熱伝導性のよいパイプ４を圧入または挿入
し、該パイプ４を各種固定法により多孔質金型１に固定
することを特徴とする多孔質金型の流体通路工作法。1. A through hole 1B penetrating left and right or up and down with a drill 2 on the left and right sides or upper and lower sides of a porous mold 1, and a heat which is slightly thinner than the through hole 1B. A fluid passage working method for a porous mold, comprising press-fitting or inserting a pipe 4 having good conductivity and fixing the pipe 4 to the porous mold 1 by various fixing methods.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10191291A JP2856367B2 (en) | 1991-04-05 | 1991-04-05 | Fluid passage working method for porous mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10191291A JP2856367B2 (en) | 1991-04-05 | 1991-04-05 | Fluid passage working method for porous mold |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04308705A JPH04308705A (en) | 1992-10-30 |
| JP2856367B2 true JP2856367B2 (en) | 1999-02-10 |
Family
ID=14313124
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10191291A Expired - Fee Related JP2856367B2 (en) | 1991-04-05 | 1991-04-05 | Fluid passage working method for porous mold |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2856367B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2478796B (en) * | 2010-03-19 | 2014-01-08 | Upcycle Holdings Ltd | Process for forming a mould |
-
1991
- 1991-04-05 JP JP10191291A patent/JP2856367B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH04308705A (en) | 1992-10-30 |
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