JPS63120625A - Injection mold - Google Patents
Injection moldInfo
- Publication number
- JPS63120625A JPS63120625A JP26608286A JP26608286A JPS63120625A JP S63120625 A JPS63120625 A JP S63120625A JP 26608286 A JP26608286 A JP 26608286A JP 26608286 A JP26608286 A JP 26608286A JP S63120625 A JPS63120625 A JP S63120625A
- Authority
- JP
- Japan
- Prior art keywords
- cooling water
- sprue
- space
- sprue bush
- resin
- 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
- 238000002347 injection Methods 0.000 title description 12
- 239000007924 injection Substances 0.000 title description 12
- 239000000498 cooling water Substances 0.000 claims abstract description 19
- 238000001746 injection moulding Methods 0.000 claims abstract description 9
- 239000011347 resin Substances 0.000 abstract description 14
- 229920005989 resin Polymers 0.000 abstract description 14
- 238000000465 moulding Methods 0.000 abstract description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000007711 solidification Methods 0.000 abstract description 3
- 230000008023 solidification Effects 0.000 abstract description 3
- 238000001816 cooling Methods 0.000 abstract 1
- 238000004904 shortening Methods 0.000 abstract 1
- 230000000052 comparative effect Effects 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000000630 rising effect Effects 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
- B29C45/2737—Heating or cooling means therefor
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- 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」
本発明はコールドランナー式の射出成形用金型に係わり
、特に成形時間の短縮が図れる金型に関する。DETAILED DESCRIPTION OF THE INVENTION "Field of Industrial Application" The present invention relates to a cold runner type injection mold, and particularly to a mold that can shorten molding time.
「従来の技術」
第３図は、この種のコールドランナー式射出成形用金型
の一例を示す縦断面図である。"Prior Art" FIG. 3 is a longitudinal sectional view showing an example of this type of cold runner injection mold.
図中符号ｌは固定側取付板であり、その下面には固定側
型板２が固定されている。また、この固定側型板２と対
向して、図示しない可動側取付板に取り付けられた可動
側型板３が設けられており、これら固定側型板２と可動
側型板３の間には、キャビティ（図示路）およびこのキ
ャビティに連通ずるランナー４．４が形成されている。Reference numeral 1 in the figure represents a fixed side mounting plate, and a fixed side mold plate 2 is fixed to the lower surface thereof. Further, a movable side template 3 attached to a movable side mounting plate (not shown) is provided opposite to the fixed side template 2, and between the fixed side template 2 and the movable side template 3. , a cavity (channel shown) and a runner 4.4 communicating with this cavity are formed.
また、前記固定側型板２には、前記ランナー４，４に通
じるスプルー５が形成されたノズルタッチ６が貫入固定
されており、このノズルタッチ６の上端面の凹部７に射
出ノズル（図示路）を押し当てて溶融樹脂を射出するこ
とにより、スプルー５およびランナー４．４を介してキ
ャビティ内に樹脂が充填されるようになっている。そし
て、キャビティ、ランナー４，４、ならびにスプルー５
内の樹脂が十分に固化したら、金型を開いてスプル一部
分およびランナ一部分がつながった成形品を取り出すよ
うになっている。Further, a nozzle touch 6 in which a sprue 5 communicating with the runners 4 and 4 is formed is inserted and fixed in the stationary template 2, and an injection nozzle (as shown in the figure) is inserted into a recess 7 on the upper end surface of the nozzle touch 6. ) to inject the molten resin into the cavity via the sprue 5 and the runner 4.4. Then, the cavity, runners 4, 4, and sprue 5
Once the resin inside has sufficiently solidified, the mold is opened and the molded product, in which part of the sprue and part of the runner are connected, is taken out.
「発明が解決しようとする問題点」
ところで、このような射出成形用金型では、スプルー５
内に繰り返し注入される溶融樹脂によってノズルタッチ
６が加温されるため、その近傍に冷却水通路が形成され
ているキャビティ内の樹脂に比べて、スプルー５内の樹
脂は冷えに＜＜、固化に時間がかかる。１．たがって、
このスプルー５内の樹脂の同化時間が成形サイクルの速
度を律しており、生産効率を高めることが困難であると
いう問題かあった。"Problem to be solved by the invention" By the way, in such an injection mold, the sprue 5
Since the nozzle touch 6 is heated by the molten resin that is repeatedly injected into the nozzle touch 6, the resin in the sprue 5 cools and solidifies compared to the resin in the cavity where the cooling water passage is formed in the vicinity. It takes time. 1. Therefore,
This assimilation time of the resin in the sprue 5 controls the speed of the molding cycle, which poses a problem in that it is difficult to increase production efficiency.
［発明の目的」
本発明は前記事情に鑑みてなされたもので、成形サイク
ルを短縮でき、生産性向上が図れる射出成形用金型を提
供ずろことを目的とする。[Object of the Invention] The present invention has been made in view of the above circumstances, and an object thereof is to provide an injection mold that can shorten the molding cycle and improve productivity.
「−問題点を解決するための手段」
本発明の射出成形用金型は、ノズルタッチ内部に冷却水
通路を形成し１、ここに冷却水を流すことによってスプ
ルー内の樹脂の同化を促進するよう１こしにことを特徴
とする。"-Means for Solving the Problems" The injection mold of the present invention has a cooling water passage formed inside the nozzle touch (1), and by flowing cooling water there, the assimilation of the resin in the sprue is promoted. It is characterized by the fact that it is easy to use.
「実施例」
以下、図面を参照して本発明の一実施例を詳細に説明４
−る。なお、前記従来例と同一部分には同一符号を付し
て説明を省略する。“Example” An example of the present invention will be described below in detail with reference to the drawings.
-ru. Note that the same parts as in the conventional example are given the same reference numerals, and the description thereof will be omitted.
第１図は一実施例の射出成形用金型を示すもので、ノズ
ルタッチ１０のみは正面図、他の部分は縦断面図によっ
て表している。FIG. 1 shows an injection mold according to an embodiment, in which only the nozzle touch 10 is shown in a front view, and the other parts are shown in a longitudinal sectional view.
前記ノズルタッチＩＯには、中央部の周面に１対の凹部
１１，１１が形成されており、これによりノズルタッチ
１０と固定側型板２との間には、第２図に示ケように互
いに連通しない２つの空間１２Ａ、１２Ｂが画成さねて
いる。また、ノズルタッチ１０には、その上端のノズル
当接面から、互いに平行な４本の縦穴１３・・が形成さ
れており、うち２本は空間！２Ａに連通１２、他の２本
は空間１２Ｂと連通するようになっている。また、これ
ら縦穴１３・・・の上端は、それぞれネジ１５が螺合さ
れて液密に封止されている。The nozzle touch IO has a pair of recesses 11, 11 formed on the circumferential surface of the central part, so that there is a gap between the nozzle touch 10 and the stationary template 2 as shown in FIG. Two spaces 12A and 12B that do not communicate with each other are defined. In addition, the nozzle touch 10 has four vertical holes 13 parallel to each other formed from the nozzle contact surface at its upper end, two of which are spaces! 2A communicates with 12, and the other two communicate with space 12B. Further, the upper ends of these vertical holes 13 are each screwed with screws 15 and sealed liquid-tightly.
一方、ノズルタッチｌＯの下端部には、外周面から横穴
１６．１６が２本形成されており、これら横穴１６．１
６が、空間１２Ａに連通ずる縦穴１３と空間１２Ｂに連
通ずる縦穴１３とをそれぞれ１組づつ連通させている。On the other hand, two horizontal holes 16.16 are formed from the outer peripheral surface at the lower end of the nozzle touch lO, and these horizontal holes 16.1
6 communicates one set of vertical holes 13 communicating with the space 12A and one set of vertical holes 13 communicating with the space 12B.
これにより、ノズルタッチＩＯ内には、空間＋２Ａから
縦穴１３，１３および横穴１６を介して空間１２Ｂに至
る冷却水通路が２つ構成されている。 士た、固定側型
板２内には、空間１２Ａと図示しない給水源とを連通ず
る給水路１７と、空間１２Ｂと排水光とを連通ずる排水
路１８とが形成されている。As a result, two cooling water passages are configured in the nozzle touch IO from the space +2A to the space 12B via the vertical holes 13, 13 and the horizontal hole 16. Additionally, a water supply channel 17 that communicates the space 12A with a water supply source (not shown) and a drainage channel 18 that communicates the space 12B with a drainage light are formed in the fixed side template 2.
このような構成からなる射出成形用金型では、射出成形
時にｉＴｉ記給水路１７を通じて冷却水を供給すると、
この冷却水がノズルタッチＩＯ内の縦穴１３・・・およ
び横穴１６．１６に流れ、ノズルタッチＩＯ全体が冷却
される。したがって、この金型によれば、溶融した樹脂
によるノズルタッチ１０の昇温を防ぎ、スプルー１４内
の樹脂の同化を早めることかできるので、従来の射出成
形用金型に比べて成形サイクルの短縮および生産効率の
向上が図れる。In an injection mold having such a configuration, when cooling water is supplied through the iTi water supply channel 17 during injection molding,
This cooling water flows into the vertical holes 13, . . . and the horizontal holes 16, 16 in the Nozzle Touch IO, and the entire Nozzle Touch IO is cooled. Therefore, according to this mold, it is possible to prevent the temperature of the nozzle touch 10 from rising due to the molten resin and to hasten the assimilation of the resin in the sprue 14, resulting in a shorter molding cycle compared to conventional injection molding molds. and improve production efficiency.
ここで、この点を実証するため、本発明者らは第１図お
よび第２図に示す金型（実験例）を試作して実際に射出
成形を行ない、ノズルタッチに冷却水通路が形成されて
いない点のみが異なる金型（比較例）と１成形サイクル
に要する時間を比べた。Here, in order to prove this point, the present inventors prototyped a mold (experimental example) shown in Figs. 1 and 2 and actually performed injection molding, and a cooling water passage was formed at the nozzle touch. The time required for one molding cycle was compared with a mold (comparative example) that differs only in that it is not molded.
その結果、比較例の射出成形用金型ではｌ成形サイクル
に１６ｓｅｃ、必要だったのに対し、実験例の金型では
１３〜ｌ ４ ｓｅｃ、で成形を行なうことができた。As a result, the injection mold of the comparative example required 16 sec for 1 molding cycle, whereas the mold of the experimental example was able to perform molding in 13 to 1 4 sec.
なお、冷却水通路の形状は前記実施例に限られるもので
はなく、ノズルタッチの形状・サイズに応じて種々変形
してよい。例えば、ノズルタッチが細い場合には、ノズ
ルタッチの外周面に螺旋状に溝を形成し、固定側型板と
前記溝によって画成される空間を冷却水通路として使用
する構成などら可能である。Note that the shape of the cooling water passage is not limited to the above embodiment, and may be modified in various ways depending on the shape and size of the nozzle touch. For example, if the nozzle touch is narrow, it is possible to form a spiral groove on the outer peripheral surface of the nozzle touch and use the space defined by the fixed side template and the groove as a cooling water passage. .
「発明の効果」
本発明の射出成形用金型はノズルタッチ内に冷却水通路
を形成したものなので、この冷却水通路に冷却水を流す
ことにより、注入された樹脂によるノズルタッチの昇温
を防ぎ、スプルー内の樹脂の固化を早めることができろ
。したがって、従来の射出成形用金型に比べ、成形サイ
クルを短縮することができ、生産効率の向上が図れる。``Effects of the Invention'' Since the injection mold of the present invention has a cooling water passage formed within the nozzle touch, by flowing cooling water through this cooling water passage, the temperature of the nozzle touch due to the injected resin can be reduced. It should be possible to prevent this and speed up the solidification of the resin in the sprue. Therefore, compared to conventional injection molds, the molding cycle can be shortened and production efficiency can be improved.
第１図は本発明の射出成形用金型の一実施例を示す縦断
面図、第２図は第１図中■−■線視断面図、第３図は従
来の射出成形用金型を示す縦断面図である。
ＩＯ・・・ノズルタッチ、１４・・・スプルー（以下、
冷却水通路）
１２Ａ、１２Ｂ・・・空間、
１３・・・縦穴、 １６・・・横穴、１７・・・給水
路、１８・・・排水路。Fig. 1 is a longitudinal sectional view showing an embodiment of the injection molding mold of the present invention, Fig. 2 is a sectional view taken along the line ■-■ in Fig. 1, and Fig. 3 is a conventional injection molding die. FIG. IO...Nozzle touch, 14...Sprue (hereinafter referred to as
cooling water passage) 12A, 12B...space, 13...vertical hole, 16...horizontal hole, 17...supply waterway, 18...drainage channel.
Claims (1)
チを備えた射出成形用金型において、前記ノズルタッチ
に冷却水通路を形成したことを特徴とする射出成形用金
型。An injection molding mold comprising a nozzle touch in which a sprue communicating with a cavity is formed, characterized in that a cooling water passage is formed in the nozzle touch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26608286A JPS63120625A (en) | 1986-11-08 | 1986-11-08 | Injection mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26608286A JPS63120625A (en) | 1986-11-08 | 1986-11-08 | Injection mold |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63120625A true JPS63120625A (en) | 1988-05-25 |
Family
ID=17426091
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP26608286A Pending JPS63120625A (en) | 1986-11-08 | 1986-11-08 | Injection mold |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63120625A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0444455A2 (en) * | 1990-02-27 | 1991-09-04 | Mold-Masters Limited | Injection molding cooled manifold |
| EP1614521A1 (en) * | 2004-07-10 | 2006-01-11 | Incoe International, Inc. | Tool insert for the gate of a hot runner nozzle for an injection moulding machine |
| CN104139501A (en) * | 2014-07-31 | 2014-11-12 | 上海维科精密模塑有限公司 | Threaded core cooling water connector |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5040880B2 (en) * | 1971-10-14 | 1975-12-27 | ||
| JPS5539815B1 (en) * | 1969-03-21 | 1980-10-14 | ||
| JPS618115B2 (en) * | 1976-08-13 | 1986-03-12 | Myoshi Yushi Kk |
-
1986
- 1986-11-08 JP JP26608286A patent/JPS63120625A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5539815B1 (en) * | 1969-03-21 | 1980-10-14 | ||
| JPS5040880B2 (en) * | 1971-10-14 | 1975-12-27 | ||
| JPS618115B2 (en) * | 1976-08-13 | 1986-03-12 | Myoshi Yushi Kk |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0444455A2 (en) * | 1990-02-27 | 1991-09-04 | Mold-Masters Limited | Injection molding cooled manifold |
| EP1614521A1 (en) * | 2004-07-10 | 2006-01-11 | Incoe International, Inc. | Tool insert for the gate of a hot runner nozzle for an injection moulding machine |
| CN104139501A (en) * | 2014-07-31 | 2014-11-12 | 上海维科精密模塑有限公司 | Threaded core cooling water connector |
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