JP7367538B2 - Mold - Google Patents
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- JP7367538B2 JP7367538B2 JP2020009167A JP2020009167A JP7367538B2 JP 7367538 B2 JP7367538 B2 JP 7367538B2 JP 2020009167 A JP2020009167 A JP 2020009167A JP 2020009167 A JP2020009167 A JP 2020009167A JP 7367538 B2 JP7367538 B2 JP 7367538B2
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- 238000011144 upstream manufacturing Methods 0.000 claims description 32
- 239000000498 cooling water Substances 0.000 claims description 29
- 238000000465 moulding Methods 0.000 claims description 29
- 239000012530 fluid Substances 0.000 claims description 17
- 239000011347 resin Substances 0.000 claims description 6
- 229920005989 resin Polymers 0.000 claims description 6
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 238000001816 cooling Methods 0.000 description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- -1 and for example Substances 0.000 description 1
- 239000012809 cooling fluid Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
Description
本発明は、温度調節用の流体が流通する通路を有する金型に関する。 The present invention relates to a mold having a passage through which a temperature regulating fluid flows.
特許文献１には、車両の内装部品の製造に用いる金型が開示されている。この金型は、固定側金型と、固定側金型に対して進退可能に設けられて型締めされる可動側金型とを備えている。固定側金型に対して可動側金型が型締めされることによって、溶融樹脂が充填されるキャビティが形成される。固定側金型及び可動側金型内には、冷却水が流通する冷却水通路が設けられている。 Patent Document 1 discloses a mold used for manufacturing interior parts of a vehicle. This mold includes a fixed mold and a movable mold that is movable forward and backward relative to the fixed mold and is clamped. By clamping the movable mold to the fixed mold, a cavity is formed that is filled with molten resin. A cooling water passage through which cooling water flows is provided in the fixed mold and the movable mold.
こうした金型においては、冷却水通路内に冷却水を流通させることによって、固定側金型及び可動側金型の温度が所定温度以下に調節される。これにより、キャビティ内に充填された溶融樹脂の冷却及び固化が促進され、成形時間の短縮が図られる。 In such a mold, the temperatures of the stationary mold and the movable mold are adjusted to a predetermined temperature or lower by circulating cooling water in the cooling water passage. This promotes cooling and solidification of the molten resin filled in the cavity, thereby shortening the molding time.
ところで、成形品の孔や凹部は、固定側金型または可動側金型に設けられた成形凸部によって成形される。こうした成形凸部の冷却を図るために、冷却水通路の主通路から分岐する分岐通路が成形凸部内に設けられる場合がある。ただし、この場合には、以下の不都合が生じるおそれがある。すなわち、成形凸部の外径が小さい場合には、同外径に応じて分岐通路の断面積が小さくされる。そのため、分岐通路内における冷却水の圧力損失が大きくなり、分岐通路内を冷却水が流通しにくくなることで成形凸部の冷却を図ることが難しい。 By the way, the holes and recesses of the molded product are formed by molding protrusions provided on the stationary mold or the movable mold. In order to cool the molded convex portion, a branch passage branching from the main cooling water passage may be provided within the molded convex portion. However, in this case, the following inconvenience may occur. That is, when the outer diameter of the molded convex portion is small, the cross-sectional area of the branch passage is reduced in accordance with the outer diameter. Therefore, the pressure loss of the cooling water in the branch passage increases, and it becomes difficult for the cooling water to flow through the branch passage, making it difficult to cool the molded convex portion.
なお、こうした問題は、成形凸部内に分岐通路が設けられる金型に限定されるものではなく、主通路と、主通路から分岐する分岐通路とを有する金型においては同様にして生じる。 Note that such problems are not limited to molds in which a branch passage is provided in the molding convex portion, but similarly occur in molds having a main passage and a branch passage branching from the main passage.
本発明の目的は、分岐通路内において流体を好適に流通させることのできる金型を提供することにある。 An object of the present invention is to provide a mold that can appropriately circulate fluid within a branch passage.
上記目的を達成するための金型は、温度調節用の流体が流通する通路を内部に有する金型であって、前記通路は、主通路と、前記主通路から分岐するとともに前記主通路に再び接続される分岐通路と、を有し、前記分岐通路の出口部の位置における前記主通路の断面積は、前記分岐通路の入口部の位置における前記主通路の断面積よりも小さい。 A mold for achieving the above object is a mold having a passage inside thereof through which a temperature regulating fluid flows, and the passage includes a main passage, and a main passage that branches off from the main passage and returns to the main passage. and a connected branch passage, wherein the cross-sectional area of the main passage at the outlet of the branch passage is smaller than the cross-sectional area of the main passage at the entrance of the branch passage.
同構成によれば、分岐通路の出口部の位置における主通路の断面積が、分岐通路の入口部の位置における主通路の断面積よりも小さいため、主通路において出口部付近を流れる流体の流速が入口部付近を流れる流体の流速よりも上昇するようになる。このとき、主通路において出口部付近の圧力は入口部付近の圧力よりも低くなるため、分岐通路を流れる流体に対して当該流体を出口部側へと引き込む力が作用するようになる。これにより、分岐通路を流れる流体の流速が高められる。したがって、分岐通路内において流体を好適に流通させることができる。 According to this configuration, the cross-sectional area of the main passage at the outlet of the branch passage is smaller than the cross-sectional area of the main passage at the inlet of the branch passage, so the flow rate of the fluid flowing near the outlet in the main passage becomes higher than the flow velocity of the fluid flowing near the inlet. At this time, the pressure near the outlet in the main passage becomes lower than the pressure near the inlet, so a force acts on the fluid flowing through the branch passage to draw the fluid toward the outlet. This increases the flow velocity of the fluid flowing through the branch passage. Therefore, fluid can be suitably circulated within the branch passage.
以下、図１を参照して、一実施形態について説明する。なお、本実施形態では、樹脂成形に用いられる金型として本発明を具体化している。
まず、金型の基本構成について説明する。
Hereinafter, one embodiment will be described with reference to FIG. In this embodiment, the present invention is embodied as a mold used for resin molding.
First, the basic configuration of the mold will be explained.
図１に示すように、金型は、固定型１０と、固定型１０に対して進退可能に設けられて型締めされる可動型（図示略）とを備えている。
固定型１０は、固定型１０に対して可動型（図示略）が型締めされた際に溶融樹脂が充填されるキャビティを形成する成形面１１を有している。
As shown in FIG. 1, the mold includes a fixed mold 10 and a movable mold (not shown) that is movable forward and backward relative to the fixed mold 10 and is clamped.
The fixed mold 10 has a molding surface 11 that forms a cavity filled with molten resin when a movable mold (not shown) is clamped to the fixed mold 10.
成形面１１は、主成形面１１ａと、主成形面１１ａから突出する成形凸部１２とを有している。主成形面１１ａは、成形品の一般面を成形する部分であり、成形凸部１２は、成形品の一般面に設けられた孔または凹部を成形する部分である。 The molding surface 11 has a main molding surface 11a and a molding convex portion 12 protruding from the main molding surface 11a. The main molding surface 11a is a portion for molding the general surface of the molded product, and the molding convex portion 12 is a portion for molding holes or recesses provided in the general surface of the molded product.
図１に示すように、固定型１０は、金型冷却用の流体として冷却水が流通する冷却通路２０を内部に有している。冷却通路２０には、図示しないポンプにより圧送される冷却水が循環している。 As shown in FIG. 1, the fixed mold 10 has a cooling passage 20 inside thereof through which cooling water flows as a mold cooling fluid. Cooling water pumped by a pump (not shown) circulates in the cooling passage 20 .
また、可動型（図示略）にも図示しない冷却通路が設けられており、固定型１０と同様にして冷却水が循環している。
図１に示すように、冷却通路２０は、主通路２１と、主通路２１から分岐するとともに主通路２１に再び接続される分岐通路３０とを有している。なお、以降において、主通路２１を流れる冷却水の流れ方向における上流側及び下流側を、単に「上流側」及び「下流側」として説明する。
Further, the movable mold (not shown) is also provided with a cooling passage (not shown), and cooling water is circulated therein in the same manner as in the fixed mold 10.
As shown in FIG. 1, the cooling passage 20 includes a main passage 21 and a branch passage 30 that branches from the main passage 21 and is connected to the main passage 21 again. Note that, hereinafter, the upstream side and downstream side in the flow direction of the cooling water flowing through the main passage 21 will be simply referred to as "upstream side" and "downstream side."
＜主通路２１＞
主通路２１は、固定型１０の主成形面１１ａに沿って延在する断面円形の孔である。
主通路２１は、内径が一定である一般部２１ａと、一般部２１ａよりも内径が小さい小径部２１ｂとを有している。
<Main passage 21>
The main passage 21 is a hole with a circular cross section that extends along the main molding surface 11a of the fixed mold 10.
The main passage 21 has a general portion 21a having a constant inner diameter and a small diameter portion 21b having a smaller inner diameter than the general portion 21a.
小径部２１ｂは、合流部２３、合流部２３の上流側に接続される上流側接続部２４、及び合流部２３の下流側に接続される下流側接続部２５を有している。
上流側接続部２４の内径は、下流側ほど小さい。すなわち、上流側接続部２４の断面積は、上流側ほど大きい。
The small diameter portion 21b includes a merging portion 23, an upstream connecting portion 24 connected to the upstream side of the merging portion 23, and a downstream connecting portion 25 connected to the downstream side of the merging portion 23.
The inner diameter of the upstream connecting portion 24 is smaller toward the downstream side. That is, the cross-sectional area of the upstream connecting portion 24 is larger toward the upstream side.
合流部２３の内径は一定である。すなわち、合流部２３の断面積は一定である。
下流側接続部２５の内径は、下流側ほど大きい。すなわち、下流側接続部２５の断面積は、下流側ほど大きい。
The inner diameter of the merging portion 23 is constant. That is, the cross-sectional area of the merging portion 23 is constant.
The inner diameter of the downstream connecting portion 25 is larger toward the downstream side. That is, the cross-sectional area of the downstream connecting portion 25 is larger toward the downstream side.
また、上流側接続部２４の通路長さＬ１は下流側接続部２５の通路長さＬ２よりも短く設定されている（Ｌ１＜Ｌ２）。
＜分岐通路３０＞
分岐通路３０は、合流部２３の内径よりも小さい一定の内径を有する断面円形の孔であり、一般部２１ａのうち上流側接続部２４の上流側の部分（以下、分岐部２２）から分岐するとともに、合流部２３に再び接続される。より詳しくは、分岐通路３０は、分岐部２２に開口する入口部３１から、主通路２１の延在方向に直交して延在する第１基端部３３ａと、第１基端部３３ａの先端から成形凸部１２の中心に向かって傾斜して延在する第１傾斜部３４ａと、第１傾斜部３４ａの先端から成形凸部１２の先端側に向かって延在する第１先端部３５ａとを有している。また、分岐通路３０は、合流部２３に開口する出口部３２から、主通路２１の延在方向に直交して延在する第２基端部３３ｂと、第２基端部３３ｂの先端から成形凸部１２の中心に向かって傾斜して延在する第２傾斜部３４ｂと、第２傾斜部３４ｂの先端から成形凸部１２の先端側に向かって延在する第２先端部３５ｂとを有している。第１先端部３５ａの先端と第２先端部３５ｂの先端とが接続されている。
Moreover, the passage length L1 of the upstream side connection part 24 is set shorter than the passage length L2 of the downstream side connection part 25 (L1<L2).
<Branch passage 30>
The branch passage 30 is a hole with a circular cross section having a constant inner diameter smaller than the inner diameter of the merging portion 23, and branches from a portion of the general portion 21a on the upstream side of the upstream connecting portion 24 (hereinafter referred to as the branch portion 22). At the same time, it is connected to the confluence section 23 again. More specifically, the branch passage 30 includes a first base end 33a extending perpendicularly to the extending direction of the main passage 21 from an inlet 31 opening into the branch part 22, and a distal end of the first base end 33a. A first inclined portion 34a extending from the tip toward the center of the molded convex portion 12; and a first tip portion 35a extending from the tip of the first sloped portion 34a toward the tip side of the molded convex portion 12. have. The branch passage 30 also includes a second base end 33b extending perpendicularly to the extending direction of the main passage 21 from the outlet 32 opening into the confluence part 23, and a distal end of the second base end 33b formed from It has a second inclined part 34b that extends obliquely toward the center of the convex part 12, and a second tip part 35b that extends from the tip of the second inclined part 34b toward the distal end side of the molded convex part 12. are doing. The tip of the first tip 35a and the tip of the second tip 35b are connected.
こうした冷却通路２０においては、合流部２３の断面積が分岐部２２の断面積よりも小さくされている。
次に、本実施形態の作用について説明する。
In such a cooling passage 20, the cross-sectional area of the merging portion 23 is smaller than the cross-sectional area of the branching portion 22.
Next, the operation of this embodiment will be explained.
合流部２３の断面積が、分岐部２２の断面積よりも小さいため、合流部２３を流れる冷却水の流速が分岐部２２を流れる冷却水の流速よりも上昇するようになる。このとき、合流部２３の圧力は分岐部２２の圧力よりも低くなるため、分岐通路３０を流れる冷却水に対して当該冷却水を出口部３２側へと引き込む力が作用するようになる。 Since the cross-sectional area of the confluence part 23 is smaller than the cross-sectional area of the branch part 22, the flow rate of the cooling water flowing through the confluence part 23 becomes higher than the flow rate of the cooling water flowing through the branch part 22. At this time, since the pressure in the confluence section 23 becomes lower than the pressure in the branch section 22, a force acts on the cooling water flowing through the branch passage 30 to draw the cooling water toward the outlet section 32 side.
次に、本実施形態の効果について説明する。
（１）合流部２３の断面積は、分岐部２２の断面積よりも小さい。
こうした構成によれば、分岐通路３０を流れる冷却水の流速が高められる。したがって、分岐通路３０内において冷却水を好適に流通させることができる。
Next, the effects of this embodiment will be explained.
(1) The cross-sectional area of the merging portion 23 is smaller than the cross-sectional area of the branching portion 22.
According to this configuration, the flow rate of the cooling water flowing through the branch passage 30 is increased. Therefore, cooling water can be appropriately circulated within the branch passage 30.
（２）分岐通路３０は、固定型１０の成形面１１を構成する成形凸部１２内に設けられている。
こうした構成によれば、分岐通路３０を流れる冷却水によって成形凸部１２の冷却を行うことができる。
(2) The branch passage 30 is provided within the molding convex portion 12 that constitutes the molding surface 11 of the fixed mold 10.
According to such a configuration, the molded convex portion 12 can be cooled by the cooling water flowing through the branch passage 30.
（３）主通路２１は、合流部２３の上流側に接続され、上流側ほど断面積が大きい上流側接続部２４を有している。
こうした構成によれば、合流部２３と分岐部２２とが上流側接続部２４によって緩やかに接続される。そのため、分岐部２２から合流部２３へと流れる際の冷却水の圧力損失が低減される。これにより、合流部２３を流れる冷却水の流速を一層高めることができ、合流部２３の圧力を一層低めることができる。したがって、分岐通路３０を流れる冷却水に対して当該冷却水を出口部３２側へと引き込む力を一層高めることができる。
(3) The main passage 21 is connected to the upstream side of the merging portion 23, and has an upstream connecting portion 24 whose cross-sectional area is larger toward the upstream side.
According to this configuration, the merging portion 23 and the branching portion 22 are loosely connected by the upstream connecting portion 24. Therefore, the pressure loss of the cooling water when flowing from the branch section 22 to the confluence section 23 is reduced. Thereby, the flow rate of the cooling water flowing through the confluence section 23 can be further increased, and the pressure in the confluence section 23 can be further lowered. Therefore, the force for drawing the cooling water flowing through the branch passage 30 toward the outlet portion 32 can be further increased.
（４）主通路２１は、合流部２３の下流側に接続され、下流側ほど断面積が大きい下流側接続部２５を有している。
合流部２３を流れる冷却水は、分岐通路３０からの冷却水と合流して下流側へと流れる。このとき、主通路２１の断面積が急に大きくなると、冷却水の圧力損失が増大することによって冷却水の流速が低下するようになる。そのため、合流部２３よりも下流側の部分ほど固定型１０の冷却の効率が低下するおそれがある。
(4) The main passage 21 is connected to the downstream side of the merging portion 23, and has a downstream connecting portion 25 whose cross-sectional area is larger toward the downstream side.
The cooling water flowing through the merging portion 23 merges with the cooling water from the branch passage 30 and flows downstream. At this time, if the cross-sectional area of the main passage 21 suddenly increases, the pressure loss of the cooling water increases and the flow rate of the cooling water decreases. Therefore, there is a possibility that the cooling efficiency of the stationary mold 10 decreases as the portion downstream of the merging portion 23 increases.
この点、上記構成によれば、合流部２３とそれよりも下流側の部分とが下流側接続部２５によって緩やかに接続される。そのため、合流部２３から下流側へと流れる際の冷却水の圧力損失が低減されるようになり、冷却水の流速が上昇するようになる。したがって、合流部２３よりも下流側の部分における固定型１０の冷却の効率を高めることができる。 In this regard, according to the above configuration, the merging portion 23 and a portion downstream from the merging portion 23 are loosely connected by the downstream connecting portion 25. Therefore, the pressure loss of the cooling water when flowing downstream from the confluence section 23 is reduced, and the flow rate of the cooling water is increased. Therefore, the cooling efficiency of the stationary mold 10 in the portion downstream of the merging portion 23 can be increased.
（５）上流側接続部２４の通路長さＬ１は、下流側接続部２５の通路長さＬ２よりも短い。
こうした構成によれば、分岐通路３０の入口部３１と出口部３２との間隔が狭くなるため、分岐通路３０の形成に要するスペースを小さくできる。したがって、固定型１０内に分岐通路３０をより容易に形成することができる。
(5) The passage length L1 of the upstream connecting part 24 is shorter than the passage length L2 of the downstream connecting part 25.
According to such a configuration, the space between the inlet portion 31 and the outlet portion 32 of the branch passage 30 becomes narrower, so that the space required for forming the branch passage 30 can be reduced. Therefore, the branch passage 30 can be formed more easily within the fixed mold 10.
＜変更例＞
本実施形態は、以下のように変更して実施することができる。本実施形態及び以下の変更例は、技術的に矛盾しない範囲で互いに組み合わせて実施することができる。
<Example of change>
This embodiment can be modified and implemented as follows. This embodiment and the following modified examples can be implemented in combination with each other within a technically consistent range.
・冷却通路２０は、固定型１０に形成されるものに限定されず、固定型１０に対して進退可能に設けられて型締めされる可動型や同可動型の移動方向に対して傾斜した方向にスライド可能に設けられたスライド型に形成してもよい。 - The cooling passage 20 is not limited to one formed in the fixed mold 10, but may be a movable mold that is movable forward and backward relative to the fixed mold 10 and clamped, or a direction inclined with respect to the moving direction of the movable mold. It may be formed into a sliding type that is slidably provided.
こうした構成によれば、可動型またはスライド型において、成形面を構成する成形凸部の冷却を行うことができる。
・基端部３３ａ，３３ｂの少なくとも一方は省略することができる。例えば第１基端部３３ａを省略する場合には、第１傾斜部３４ａの基端を分岐部２２に接続すればよい。
According to this configuration, in the movable mold or the slide mold, it is possible to cool the molding convex portions that constitute the molding surface.
- At least one of the base end portions 33a and 33b can be omitted. For example, when the first base end portion 33a is omitted, the base end of the first inclined portion 34a may be connected to the branch portion 22.
・図２に示すように、基端部３３ａ，３３ｂ及び傾斜部３４ａ，３４ｂは省略することができる。すなわち、分岐通路３０は、第１先端部３５ａと第２先端部３５ｂとの間隔が広がったものであってもよい。 - As shown in FIG. 2, the base end portions 33a, 33b and the inclined portions 34a, 34b can be omitted. That is, the branch passage 30 may have a wider interval between the first tip 35a and the second tip 35b.
・上流側接続部２４の通路長さＬ１は、下流側接続部２５の通路長さＬ２よりも短いものに限定されない。すなわち、上流側接続部２４の通路長さＬ１は、下流側接続部２５の通路長さＬ２よりも長くてもよいし（Ｌ１＞Ｌ２）、同じ長さであってもよい（Ｌ１＝Ｌ２）。 - The passage length L1 of the upstream connecting part 24 is not limited to being shorter than the passage length L2 of the downstream connecting part 25. That is, the passage length L1 of the upstream connection part 24 may be longer than the passage length L2 of the downstream connection part 25 (L1>L2), or may be the same length (L1=L2). .
・下流側接続部２５は、本実施形態に例示したように下流側ほど内径が大きくされたものに限定されず、一定の内径を有するものであってもよい。この場合、下流側接続部２５の内径を、合流部２３の内径よりも大きく、主通路２１の内径よりも小さくすればよい。また、図２に示すように、下流側接続部２５は省略することもできる。 - The downstream connecting portion 25 is not limited to having an inner diameter larger toward the downstream side as exemplified in this embodiment, but may have a constant inner diameter. In this case, the inner diameter of the downstream connecting portion 25 may be made larger than the inner diameter of the merging portion 23 and smaller than the inner diameter of the main passage 21. Further, as shown in FIG. 2, the downstream connecting portion 25 can be omitted.
・上流側接続部２４は、本実施形態に例示したように下流側ほど内径が小さくされたものに限定されず、一定の内径を有するものであってもよい。この場合、上流側接続部２４の内径を、合流部２３の内径よりも大きく、主通路２１の内径よりも小さくすればよい。また、図２に示すように、上流側接続部２４は省略することもできる。 - The upstream connecting portion 24 is not limited to having an inner diameter smaller toward the downstream side as illustrated in this embodiment, but may have a constant inner diameter. In this case, the inner diameter of the upstream connecting portion 24 may be made larger than the inner diameter of the merging portion 23 and smaller than the inner diameter of the main passage 21. Further, as shown in FIG. 2, the upstream connecting portion 24 can be omitted.
・主通路２１の断面形状は円形に限定されず、正方形などの多角形であってもよい。
・本発明に係る通路は、冷却水が流通する冷却通路２０に限定されず、加熱水が流通する加熱通路であってもよい。すなわち、本発明に係る通路は、水が流通されることによって、金型の温度を調節するものであればよい。
- The cross-sectional shape of the main passage 21 is not limited to a circle, but may be a polygon such as a square.
- The passage according to the present invention is not limited to the cooling passage 20 through which cooling water flows, but may be a heating passage through which heated water flows. In other words, the passage according to the present invention may be one that allows water to flow therethrough to adjust the temperature of the mold.
・本発明に係る流体は、水には限定されず、例えばオイルやガスを用いることもできる。
・本発明に係る金型は、樹脂成型用の金型に限定されず、金属成形用の金型であってもよい。
- The fluid according to the present invention is not limited to water, and for example, oil or gas can also be used.
- The mold according to the present invention is not limited to a mold for resin molding, but may be a mold for metal molding.
１０…固定型
１１…成形面
１１ａ…主成形面
１２…成形凸部
２０…冷却通路
２１…主通路
２１ａ…一般部
２１ｂ…小径部
２２…分岐部
２３…合流部
２４…上流側接続部
２５…下流側接続部
３０…分岐通路
３１…入口部
３２…出口部
３３ａ…第１基端部
３３ｂ…第２基端部
３４ａ…第１傾斜部
３４ｂ…第２傾斜部
３５ａ…第１先端部
３５ｂ…第２先端部
Ｌ１…通路長さ
Ｌ２…通路長さ
DESCRIPTION OF SYMBOLS 10... Fixed mold 11... Molding surface 11a... Main molding surface 12... Molding convex part 20... Cooling passage 21... Main passage 21a... General part 21b... Small diameter part 22... Branch part 23... Merging part 24... Upstream side connection part 25... Downstream connection part 30... Branch passage 31... Inlet part 32... Outlet part 33a... First base end part 33b... Second base end part 34a... First inclined part 34b... Second inclined part 35a... First tip part 35b... Second tip L1...Passage length L2...Passage length
Claims (5)
前記金型の成形面は、主成形面と、前記主成形面から突出する成形凸部と、を有し、
前記通路は、前記主成形面に沿って延在する主通路と、前記主通路から分岐するとともに前記主通路に再び接続される分岐通路と、を有し、
前記分岐通路は、前記成形凸部内に設けられており、
前記分岐通路のうち前記分岐通路を流れる前記流体が前記主通路に流出する部分である出口部の位置における前記主通路の断面積は、前記分岐通路のうち前記主通路を流れる前記流体の一部が前記分岐通路に流入する部分である入口部の位置における前記主通路の断面積よりも小さい、
金型。 A mold having a passage inside thereof through which a temperature regulating fluid flows,
The molding surface of the mold has a main molding surface and a molding convex portion protruding from the main molding surface,
The passage has a main passage extending along the main molding surface , and a branch passage that branches from the main passage and is connected to the main passage again,
The branch passage is provided within the molded convex portion,
The cross -sectional area of the main passage at the outlet portion of the branch passage where the fluid flowing through the branch passage flows out into the main passage is a portion of the branch passage where the fluid flowing through the main passage is located. is smaller than the cross-sectional area of the main passage at the inlet portion where it flows into the branch passage;
Mold.
前記主通路は、前記出口部を含む部分の上流側に接続され、上流側ほど断面積が大きい上流側接続部を有している、
請求項１に記載の金型。 When the upstream side in the flow direction of the fluid flowing through the main passage is defined as the upstream side,
The main passage is connected to the upstream side of the part including the outlet part, and has an upstream connecting part whose cross-sectional area is larger toward the upstream side.
The mold according to claim 1.
前記主通路は、前記出口部を含む部分の下流側に接続され、下流側ほど断面積が大きい下流側接続部を有している、
請求項１または請求項２に記載の金型。 When the downstream side in the flow direction of the fluid flowing through the main passage is defined as the downstream side,
The main passage is connected to the downstream side of the part including the outlet part, and has a downstream connecting part whose cross-sectional area is larger toward the downstream side.
The mold according to claim 1 or claim 2.
前記主通路は、前記出口部を含む部分の上流側に接続され、上流側ほど断面積が大きい上流側接続部を有しており、
前記上流側接続部の通路長さは、前記下流側接続部の通路長さよりも短い、
請求項３に記載の金型。 When the upstream side in the flow direction of the fluid flowing through the main passage is defined as the upstream side,
The main passage is connected to the upstream side of the portion including the outlet portion, and has an upstream connecting portion whose cross-sectional area is larger toward the upstream side;
The passage length of the upstream connection part is shorter than the passage length of the downstream connection part.
The mold according to claim 3.
前記流体は、冷却水である、
請求項１～請求項４のいずれか一項に記載の金型。 The mold is a mold for resin molding,
the fluid is cooling water;
The mold according to any one of claims 1 to 4.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005280266A (en) | 2004-03-30 | 2005-10-13 | Daiwa Kasei Ind Co Ltd | Mold and its manufacturing method |
| JP2012106501A (en) | 2005-09-07 | 2012-06-07 | Sacmi Cooperativa Meccanici Imola Soc Cooperativa | Method for producing mould element |
| JP2019136648A (en) | 2018-02-09 | 2019-08-22 | リンナイ株式会社 | Cleaning liquid generator |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005280266A (en) | 2004-03-30 | 2005-10-13 | Daiwa Kasei Ind Co Ltd | Mold and its manufacturing method |
| JP2012106501A (en) | 2005-09-07 | 2012-06-07 | Sacmi Cooperativa Meccanici Imola Soc Cooperativa | Method for producing mould element |
| JP2019136648A (en) | 2018-02-09 | 2019-08-22 | リンナイ株式会社 | Cleaning liquid generator |
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