JPH01178358A - Device for cooling metallic mold - Google Patents
Device for cooling metallic moldInfo
- Publication number
- JPH01178358A JPH01178358A JP50788A JP50788A JPH01178358A JP H01178358 A JPH01178358 A JP H01178358A JP 50788 A JP50788 A JP 50788A JP 50788 A JP50788 A JP 50788A JP H01178358 A JPH01178358 A JP H01178358A
- Authority
- JP
- Japan
- Prior art keywords
- cooling water
- cooling
- mold
- water passage
- iron pipe
- 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
- 238000001816 cooling Methods 0.000 title claims abstract description 14
- 239000000498 cooling water Substances 0.000 claims abstract description 28
- 239000008187 granular material Substances 0.000 claims abstract description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000013618 particulate matter Substances 0.000 claims description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 16
- 229910052742 iron Inorganic materials 0.000 abstract description 8
- 229910000831 Steel Inorganic materials 0.000 abstract description 3
- 239000010959 steel Substances 0.000 abstract description 3
- 238000007599 discharging Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 abstract 1
- 238000012856 packing Methods 0.000 abstract 1
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 238000004512 die casting Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000003779 heat-resistant material Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000012778 molding material Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野コ
本発明はダイカスト成形用金型または射出成形用金型そ
の他の金型に設けられる冷却装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a cooling device provided in a die-casting mold, an injection mold, or other mold.
〔従来の技術とその問題点］
ダイカスト成形用金型、射出成形用金型その他の金型で
は、周知のように、成形材料を冷却固化させるに要する
時間を短縮させ、或いは金型の過熱を防止し、金型寿命
の延長をはかるために、内部に冷却水を通す冷却水通路
を形成している。この冷却水通路は冷却効果を高めるた
めに従来から所要冷却部分に小径のものを多数本形成し
伝熱面積を増大させることが行なわれている。しかし冷
却水通路を多数本形成するには加工コストが高くなると
いう問題或いは金型形状によってはその形成スペースが
ないという問題があった。[Prior art and its problems] As is well known, in die casting molds, injection molds, and other molds, it is necessary to shorten the time required for cooling and solidifying the molding material, or to prevent overheating of the mold. In order to prevent this and extend the life of the mold, a cooling water passage is formed inside to allow cooling water to pass through. In order to enhance the cooling effect, a large number of cooling water passages with small diameters have been conventionally formed in the required cooling portion to increase the heat transfer area. However, there is a problem in that forming a large number of cooling water passages increases the processing cost, or that there is not enough space to form them depending on the shape of the mold.
〔問題点を解決するための手段］ 本発明は上記問題点を解決せんとするもので。[Means for solving problems] The present invention aims to solve the above problems.
所要冷却部分に形成された冷却水通路の中に粒状物を通
水間隙が残るように充填してなることを特徴とした金型
の冷却装置である。This mold cooling device is characterized in that a cooling water passage formed in a required cooling portion is filled with particulate matter so that a water passage gap remains.
［作用］
冷却水通路に粒状物を充填することにより、伝熱係数を
増大させ、金型からの抜熱量を向上させる。[Function] Filling the cooling water passage with granules increases the heat transfer coefficient and improves the amount of heat removed from the mold.
粒状物が充填されていない場合の伝熱抵抗は、冷却水通
路の内壁のみにあるが、粒状物を充填した場合には、冷
却水通路の通水可能な横断面積が小さくなり、冷却水を
粒状物を充填していない場合と同量流すことを想定すれ
ば、粒状物を充填した場合は冷却水は充分に撹拌され流
速は速くなる。When granules are not filled, the heat transfer resistance is only on the inner wall of the cooling water passage, but when granules are filled, the cross-sectional area of the cooling water passage that allows water to flow becomes smaller, making it difficult for cooling water to pass through. Assuming that the same amount of water flows as when no particulate matter is filled, when the particulate matter is filled, the cooling water is sufficiently agitated and the flow rate becomes faster.
流速が速くなると境界面での伝熱係数が上る。さらに、
管内壁に接触している粒状物に熱伝達され管内部におい
ても、充填された粒状物と冷却水間でも熱伝達が行なわ
れ、冷却能力、即ち抜熱量が大きくなる。As the flow velocity increases, the heat transfer coefficient at the interface increases. moreover,
Heat is transferred to the granules in contact with the inner wall of the tube, and heat is transferred both inside the tube and between the filled granules and the cooling water, increasing the cooling capacity, that is, the amount of heat removed.
［実施例］ 次に図面と共に本発明の詳細な説明する。[Example] Next, the present invention will be described in detail with reference to the drawings.
第１図に金型の一例を示し、図中１．２は互いに開閉し
得る上型と下型、３はその間に形成される湯道である。An example of a mold is shown in FIG. 1, where 1.2 is an upper mold and a lower mold that can be opened and closed with each other, and 3 is a runner formed between them.
下型２には内径３０ｍｍの冷却水通路４を有する直線状
の鉄バイブ５が貫挿され、該鉄パイプ５の一端には冷却
水を注入するための接続口６、他端には排出させるため
の接続ロアが設けられている。しかして鉄パイプ５内に
は直径５〜７ｍｍの粒状物（鋼球）８，８・・・・を特
に湯道３に近い所要冷却部分につき充填する。９，９は
該粒状物８，８・・・・の移動を防ぐため鉄バイブ５内
に張設した網部材である。A straight iron vibrator 5 having a cooling water passage 4 with an inner diameter of 30 mm is inserted into the lower mold 2, and one end of the iron pipe 5 has a connection port 6 for injecting cooling water, and the other end has a connection port 6 for discharging cooling water. A connection lower is provided for this purpose. The iron pipe 5 is filled with granules (steel balls) 8, 8, . Reference numerals 9, 9 are net members stretched within the iron vibrator 5 to prevent the movement of the granules 8, 8, . . . .
一方、第２図に示した金型では、上型ｌＯと下型とで形
成される半球状の製品成形用空間１２を冷却するため下
型１１をスポット冷却させている。即ち。On the other hand, in the mold shown in FIG. 2, the lower mold 11 is spot-cooled in order to cool the hemispherical product molding space 12 formed by the upper mold 1O and the lower mold. That is.
ドーム状の鉄製器体１３の中心に注水パイプ１４と排水
パイプ１５を貫挿することにより該器体１３内に形成さ
れた冷却水通路に粒状物８，８・・・・を充填してなる
ものである。A cooling water passage formed in the dome-shaped iron vessel body 13 by inserting a water injection pipe 14 and a drainage pipe 15 into the center thereof is filled with granules 8, 8, etc. It is something.
第３図には従来の単なる円管状の冷却水通路（直径３０
ｍｍ、 １５ｍｍ、 １０ｍｍ）の抜熱量と、本発明に
係る第１図の冷却水通路（直径３０■）に粒状物を充填
したものの抜熱量とを比較実験しその結果を横軸に冷却
水量を採ってグラフに表わしたものである。Figure 3 shows a conventional simple circular cooling water passage (diameter 30 mm).
A comparison experiment was conducted between the amount of heat removed from the cooling water passage (diameter 30mm) shown in Fig. 1 according to the present invention (diameter 30mm) filled with granules, and the results were plotted on the horizontal axis to plot the amount of cooling water. This is what was taken and expressed in a graph.
このように粒状物８，８・・・・を充填することにより
通過する冷却水への熱伝達が活発になり抜熱量を大幅に
増大させることができた。By filling the granules 8, 8, . . . in this manner, heat transfer to the passing cooling water becomes active, and the amount of heat removed can be significantly increased.
なお１粒状物８，８・・・・はこの実施例のように球状
のものでなくてもよくその大きさも特に限定されるもの
ではないが１通過する冷却水の圧力損失を考慮すれば一
定の大きさの球状の粒状物のほうが通水間隙が冷却水通
路内に均一に形、成されるため冷却水の流れがスムース
になり望ましい、また粒状物８，８・・・・の材質につ
いては特に鋼球でなくてもよくセラミックス等の耐熱材
料を使用してもよいが、熱伝導率の高い材料を使用した
ほうがよい。Note that the granules 8, 8, etc. do not have to be spherical as in this embodiment, and their size is not particularly limited, but it is constant if the pressure loss of the cooling water that passes through it is taken into consideration. It is preferable to use spherical granules with a size of The ball does not need to be a steel ball, and a heat-resistant material such as ceramics may be used, but it is better to use a material with high thermal conductivity.
［発明の効果］
以上説明したように本発明に係る金型の冷却装置は冷却
水通路に粒状物を充填させるだけで抜熱量を大幅に改善
することができる有益なものである。[Effects of the Invention] As explained above, the mold cooling device according to the present invention is advantageous because it can significantly improve the amount of heat removed just by filling the cooling water passage with granules.
第１図は本発明の一実施例を示した金型の縦断面図、第
２図は他の実施例を示した金型の縦断面図、第３図は抜
熱量を比較したグラフである。
４・・・・冷却水通路、８・・・・粒状物。Fig. 1 is a longitudinal cross-sectional view of a mold showing one embodiment of the present invention, Fig. 2 is a longitudinal cross-sectional view of a mold showing another embodiment, and Fig. 3 is a graph comparing the amount of heat removed. . 4... Cooling water passage, 8... Particulate matter.
Claims (1)
を通水間隙が残るように充填してなることを特徴とした
金型の冷却装置。 ２、粒状物が球状の形態をしている請求項１記載の金型
の冷却装置。[Scope of Claims] 1. A cooling device for a mold, characterized in that a cooling water passage formed in a required cooling portion is filled with particulate matter so that a water passage gap remains. 2. The mold cooling device according to claim 1, wherein the granules have a spherical shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP50788A JPH01178358A (en) | 1988-01-05 | 1988-01-05 | Device for cooling metallic mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP50788A JPH01178358A (en) | 1988-01-05 | 1988-01-05 | Device for cooling metallic mold |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01178358A true JPH01178358A (en) | 1989-07-14 |
Family
ID=11475681
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP50788A Pending JPH01178358A (en) | 1988-01-05 | 1988-01-05 | Device for cooling metallic mold |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01178358A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH069744U (en) * | 1992-07-21 | 1994-02-08 | 株式会社アーレスティ | Mold |
| JP2011167751A (en) * | 2010-02-22 | 2011-09-01 | Jatco Ltd | Die cooling structure and method of manufacturing the same |
| GB2478796A (en) * | 2010-03-19 | 2011-09-21 | Alfred Rodlsberger | Process for forming heating/cooling channels in a mould |
| JP2011183399A (en) * | 2009-11-11 | 2011-09-22 | Takeuchi Seisakusho:Kk | Heat exchange structure and method of manufacturing injection molded article |
-
1988
- 1988-01-05 JP JP50788A patent/JPH01178358A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH069744U (en) * | 1992-07-21 | 1994-02-08 | 株式会社アーレスティ | Mold |
| JP2011183399A (en) * | 2009-11-11 | 2011-09-22 | Takeuchi Seisakusho:Kk | Heat exchange structure and method of manufacturing injection molded article |
| JP2011167751A (en) * | 2010-02-22 | 2011-09-01 | Jatco Ltd | Die cooling structure and method of manufacturing the same |
| GB2478796A (en) * | 2010-03-19 | 2011-09-21 | Alfred Rodlsberger | Process for forming heating/cooling channels in a mould |
| GB2478796B (en) * | 2010-03-19 | 2014-01-08 | Upcycle Holdings Ltd | Process for forming a mould |
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