JPH03216314A - Manufacture of injection mold - Google Patents
Manufacture of injection moldInfo
- Publication number
- JPH03216314A JPH03216314A JP1216190A JP1216190A JPH03216314A JP H03216314 A JPH03216314 A JP H03216314A JP 1216190 A JP1216190 A JP 1216190A JP 1216190 A JP1216190 A JP 1216190A JP H03216314 A JPH03216314 A JP H03216314A
- Authority
- JP
- Japan
- Prior art keywords
- core
- resin
- model
- plate
- 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.)
- Granted
Links
- 238000002347 injection Methods 0.000 title claims abstract description 20
- 239000007924 injection Substances 0.000 title claims abstract description 20
- 238000004519 manufacturing process Methods 0.000 title claims description 20
- 239000011347 resin Substances 0.000 claims abstract description 30
- 229920005989 resin Polymers 0.000 claims abstract description 30
- 238000000034 method Methods 0.000 claims abstract description 18
- 238000005266 casting Methods 0.000 claims abstract description 13
- 239000004020 conductor Substances 0.000 claims description 4
- 238000001816 cooling Methods 0.000 abstract description 12
- 239000000498 cooling water Substances 0.000 abstract description 12
- 238000012545 processing Methods 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 9
- 238000010586 diagram Methods 0.000 description 6
- 238000003754 machining Methods 0.000 description 5
- 238000012805 post-processing Methods 0.000 description 4
- 238000001746 injection moulding Methods 0.000 description 2
- 125000006850 spacer group Chemical group 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000007730 finishing process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000002470 thermal conductor Substances 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)
本発明は多品種少量生産の成形品の射出成形型上して好
通な、樹脂にてなる射出成形型の製造方法に関する。DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a method for manufacturing an injection mold made of resin, which is suitable for injection molding of molded products produced in small quantities in a wide variety of products.
(従来の技術)
従来、射出成形型としては金属性のものが一般的であっ
たが、成形品が少量生産のもののような場合、射出成形
型の製作期間が短い、取扱いが容易であるなどの利点か
ら、樹脂を射出成形型として用いることが行われるよう
になってきている。(Prior art) Conventionally, injection molds have generally been made of metal, but when the molded product is produced in small quantities, the manufacturing period of the injection mold is short, the mold is easy to handle, etc. Because of these advantages, resins are increasingly being used as injection molds.
第15図ないし第21図は、この種の従来例を示すもの
で、従来においては、先ず、第15図に示すように、底
板51上に設けられた注型枠50内にパーティング面形
成プレート52をセットし、その上にモデル53を設置
し、その後、第16図に示すように、樹!N54aを注
入し、かつ上方開口部を上板55にて覆う。15 to 21 show conventional examples of this type. In the conventional method, first, as shown in FIG. 15, a parting surface is formed in a casting frame 50 provided on a bottom plate 51. The plate 52 is set, the model 53 is placed on it, and then, as shown in FIG. 16, the tree! N54a is injected and the upper opening is covered with an upper plate 55.
ついで、第17図に示すように、硬化後、パーティング
面形成プレート52および底板51を取外し、注型枠5
0を反転させ、第18図に示すように、樹脂54bを注
入し、かつ取付板56を設けていた.しかして、第19
図に示すように、硬化後、反転させ、かつ注型枠50、
上仮55、取付板5G、モデル53等を除去していた。Then, as shown in FIG. 17, after curing, the parting surface forming plate 52 and the bottom plate 51 are removed, and the casting frame 5 is removed.
0 was inverted, resin 54b was injected, and a mounting plate 56 was provided, as shown in FIG. However, the 19th
As shown in the figure, after curing, the casting frame 50,
Upper temporary 55, mounting plate 5G, model 53, etc. were removed.
この場合、モデル53の脱型はモデル材質がプラスチッ
クのような場合、加熱して軟化させていた.その後、第
20図に示すように、樹脂54bにてなるコア54Bに
エジェクタピン穴57や冷却水管58を、また、キャビ
ティ54Aにスプール59や冷却水管58を機械加工に
より形成していた。In this case, when the model 53 was demolded from plastic, it was heated to soften it. Thereafter, as shown in FIG. 20, an ejector pin hole 57 and a cooling water pipe 58 were formed in the core 54B made of resin 54b, and a spool 59 and a cooling water pipe 58 were formed in the cavity 54A by machining.
第21図はコア54B1キャビティ54A等をモールド
ヘースに組込んだ状態を示すもので、図中、60、61
は型板、62は受板、63は取付板、64はスペーサブ
ロソク、65は上側のエジェクタプレート、66は下側
のエジェクタプレートである。また、67はエジエクタ
ビンで、かつ取付板63側が固定側、その反対側が可動
側となっている。FIG. 21 shows the state in which the core 54B1 cavity 54A, etc. are assembled into the mold head, and in the figure, 60, 61
62 is a template plate, 62 is a receiving plate, 63 is a mounting plate, 64 is a spacer block, 65 is an upper ejector plate, and 66 is a lower ejector plate. Further, 67 is an ejector bin, and the mounting plate 63 side is a fixed side, and the opposite side is a movable side.
(発明が解決しようとする諜8)
しかるに、上記従来例においては射出成形型の製造に際
して、第20図に示すように、機械加工によって冷却水
管58等を後で形成しているが、優れた冷却効果を得る
には工夫が必要であり、冷却回路の形成が煩雑である、
というtlBがあった.本発明は上記のことに鑑み提案
されたもので、その目的とするところは、成形品の巣(
ゲート口)、ヒケを防止するため、熱良導部材を注型時
に埋込み、冷却性を向上させるとともに、簡単に冷却回
路を形成し得る射出成形型の製造方法を提供することに
ある.
また、上記に加えてスプール形成の後加工も不要とし、
その分、製造時間を短縮し得る射出成形型の製造方法を
提供することにある.
(課題を解決するための手段)
本発明は、(1)樹脂により射出成形型を製造する方法
において、キャビティ側のゲート位置に対応しかつ埋込
まれるモデルの裏面であってコア側に熱良導部材を予め
埋込みコアを注型することにより、上記目的を達成して
いる。(Intelligence to be Solved by the Invention 8) However, in the above conventional example, when manufacturing the injection mold, the cooling water pipes 58, etc. are formed later by machining, as shown in FIG. In order to obtain the cooling effect, some ingenuity is required, and the formation of the cooling circuit is complicated.
There was a tlB. The present invention was proposed in view of the above, and its purpose is to
The purpose of this invention is to provide a method for manufacturing an injection mold, which improves cooling performance by embedding a heat-conducting member during molding to prevent sink marks (gate opening), and in which a cooling circuit can be easily formed. In addition to the above, it also eliminates the need for post-processing to form the spool.
The purpose of this invention is to provide a method for manufacturing an injection mold that can shorten the manufacturing time accordingly. (Means for Solving the Problems) The present invention provides (1) a method for manufacturing an injection mold using a resin, in which a thermal conductor is placed on the back side of the model to be embedded, corresponding to the gate position on the cavity side, and on the core side. The above object is achieved by embedding the conductive member in advance and casting the core.
また、(2)樹脂により射出成形型を製造する方法にお
いて、キャビティ側にゲート・スプール部材をモデルと
ともに予め埋込むとともに、コア側に、キャビティ側の
ゲート位置に対応し、かつ前記モデルの裏面であってコ
ア側に熱良導部材を予め埋込みコアを注型することによ
り、上記目的を達成している.
(作用)
先ず、上記(1)記載の構成とすることにより、熱良導
部材はゲートに面し、かつコア側に形成される冷却水管
の上部に設けたため、冷却水管の冷却作用を熱良導部材
を介しゲートから注入された樹脂に伝え、冷却性を向上
させている。(2) In the method of manufacturing an injection molding mold using resin, a gate/spool member is embedded in advance with the model on the cavity side, and a gate/spool member is placed on the core side corresponding to the gate position on the cavity side and on the back side of the model. The above objective is achieved by pre-embedding a thermally conductive material on the core side and casting the core. (Function) First, with the configuration described in (1) above, the thermal conductivity member is provided above the cooling water pipe facing the gate and formed on the core side, so that the cooling effect of the cooling water pipe is improved. It is transmitted to the resin injected from the gate via the conductive member, improving cooling performance.
また、上記(2)記載の構成とすることにより、上述の
作用に加え、後加工によってスブールを形成する工程を
削減している.
(実施例1)
第1図ないし第6図は本発明の1実施例を示す.この実
施例においては次の工程により、射出成形型が製造され
る。Further, by adopting the configuration described in (2) above, in addition to the above-mentioned effect, the process of forming the subur by post-processing is reduced. (Embodiment 1) Figures 1 to 6 show one embodiment of the present invention. In this example, an injection mold is manufactured through the following steps.
すなわち、先ず、第1図に示すように、底板1上に設け
られた注型枠2内にパーティング面形成プレート3を設
け、その上に、モデル4を設ける.この場合、モデル4
の下部には熱良導部材Aが配設され、二〇熱良導部材A
はゲート位置に対応している。That is, as shown in FIG. 1, first, a parting surface forming plate 3 is provided in a casting frame 2 provided on a bottom plate 1, and a model 4 is provided thereon. In this case, model 4
A thermally conductive member A is disposed at the bottom of the 20 thermally conductive member A.
corresponds to the gate position.
ついで、第2図に示すように、上方部分に樹脂5aを注
入し、かつ上板6によって上方開口部を覆い、常温もし
くは乾燥炉に入れ一次硬化させる。Next, as shown in FIG. 2, a resin 5a is injected into the upper part, the upper opening is covered with the upper plate 6, and the resin 5a is placed at room temperature or in a drying oven to be primarily cured.
なお、上板6には、樹脂硬化後、モールドベースに組込
む場合、その取付用の穴7を得るためのネジ部材8が設
けられている。Incidentally, the upper plate 6 is provided with a screw member 8 for obtaining a mounting hole 7 when the upper plate 6 is assembled into a mold base after the resin hardens.
次に、第3図に示すように、樹脂5aが硬化した後、反
転させ、かつバーティング面形成プレート3や底板工を
除去する。また、モデル4突出し用のエジエクタピン9
を設ける。Next, as shown in FIG. 3, after the resin 5a is cured, it is turned over and the parting surface forming plate 3 and the bottom plate are removed. Also, ejector pin 9 for model 4 ejection
will be established.
しかして、上方にコアとなる樹脂5bを注入し、かつネ
ジ部材8と同棒のネジ部材11を有する取付板10を注
型枠2の上方に設け、二次硬化させる。Then, the resin 5b serving as the core is injected upward, and a mounting plate 10 having a threaded member 11 of the same rod as the threaded member 8 is provided above the casting frame 2, and secondary hardening is performed.
しかる後、第4図に示すように、反転させ、モデル4、
硬化した樹脂5a、この樹脂5aに設けられているエジ
エクタピン9、このエジェクタピン9が貫設されている
取付板10等を注型枠2から取外す。After that, as shown in Fig. 4, it is reversed and model 4,
The cured resin 5a, the ejector pin 9 provided on the resin 5a, the mounting plate 10 through which the ejector pin 9 is inserted, and the like are removed from the casting frame 2.
そして、第5図に示すように、エジェクタビン9の頭部
側に設けられたロノドBを伸長し、エジェクタピン9に
よってその先端に設けられたモデル4を取出す。このよ
うにしてモデル4は破壊されることなく容昌に樹脂5a
にてなる樹脂型から分離することができる。Then, as shown in FIG. 5, the rod B provided on the head side of the ejector bin 9 is extended, and the model 4 provided at the tip thereof is taken out by the ejector pin 9. In this way, Model 4 can be transferred to Yongchang with resin 5a without being destroyed.
It can be separated from the resin mold.
しかして、第6図に示すように、注型枠2、禾ジ部材8
、9等を有する上板6、取付板IO等を取外す。As shown in FIG.
, 9, etc., remove the upper plate 6, mounting plate IO, etc.
ついで、第8図に示すように、硬化した樹脂5a、5b
の外周部分を仕上げ加工して、キャビティ5Aやコア5
Bを得る.すなわち、図中外周部分の一点鎖線はこの仕
上しろである。Then, as shown in FIG. 8, the cured resins 5a and 5b are
Finish processing the outer periphery of the cavity 5A and core 5.
Get B. That is, the dashed dotted line on the outer periphery in the figure is this finishing margin.
この場合、コア5Bには機械加工により冷却水管12を
形成する。また、キャビテイ5Aにはスプール13等が
形成される。In this case, the cooling water pipe 12 is formed in the core 5B by machining. Further, a spool 13 and the like are formed in the cavity 5A.
しかして、コア5B側の冷却水管l2は熱良導部材Aの
下側に位置し、冷却水の冷却効果が効率良く熱良導部材
Aに伝達されるようになっている。Thus, the cooling water pipe l2 on the core 5B side is located below the heat conducting member A, so that the cooling effect of the cooling water is efficiently transmitted to the heat conducting member A.
第8図は、射出成形型としてのキャビティ5Aとコア5
Bとをモールドヘースに組込んだ状態を示す。図中14
は基台で、この上方外側部分にはスペーサブロソク15
が立設され、かつその上方に受板16が設けられている
.受板l6上にはネジ部材l7を介しコア5Bが設けら
れ、コア5Bの外側には型板l8が設けられている。ま
た、型板18と対向しキャビティ5A側に型板l9が設
けられ、型板19の上部にはネジ部材20を介しキャビ
テイ5Aが取付けられた取付板21が設けられている.
なお、取付板21にはキャビテイ5Aのスブール13と
連通ずるスプール13aが形成されている。Figure 8 shows the cavity 5A and core 5 as an injection mold.
B is shown assembled into the mold hese. 14 in the diagram
is the base, and the upper outer part of this is the spacer block 15.
is erected, and a receiving plate 16 is provided above it. A core 5B is provided on the receiving plate 16 via a screw member 17, and a template 18 is provided on the outside of the core 5B. Further, a mold plate 19 is provided on the side of the cavity 5A facing the mold plate 18, and a mounting plate 21 to which the cavity 5A is attached via screw members 20 is provided on the upper part of the mold plate 19.
Note that a spool 13a is formed on the mounting plate 21 and communicates with the spool 13 of the cavity 5A.
また、コア5Bにはエジエクタビン9が設けられ、この
エジェクタビン9の基端側は受板16の下方に延び、か
つ上側のエジエクタプレート22に支持されている。ま
た、このエジエクタプレート22の下方には下側のエジ
エクタプレート23が設けられ、これらは基台14の上
方に設けられ、周知構成の如《、エジエクタピン9が駆
動されるように構成されている。Further, the core 5B is provided with an ejector bin 9, and the base end side of the ejector bin 9 extends below the receiving plate 16 and is supported by the upper ejector plate 22. Further, a lower ejector plate 23 is provided below this ejector plate 22, and these are provided above the base 14, and are configured so that the ejector pin 9 is driven, as in the well-known configuration. There is.
なお、図中24は成形品であり、スブール13を介し樹
脂を型内に注入することにより成形品24を得るもので
あるが、この場合、速やかに樹脂を硬化すべく冷却水管
l2に冷却水が通される.しかして、この実施例では冷
却水管l2の上方に、スプール13のゲート位置に対応
して熱良導部材Aが埋込まれているため、冷却作用を速
やかに樹脂に伝え、その硬化を促進することができる。In addition, 24 in the figure is a molded product, and the molded product 24 is obtained by injecting resin into the mold through the Subur 13. In this case, cooling water is supplied to the cooling water pipe 12 in order to quickly harden the resin. is passed. In this embodiment, the heat conductive member A is embedded above the cooling water pipe l2 in correspondence with the gate position of the spool 13, so that the cooling effect is quickly transmitted to the resin to promote its hardening. be able to.
(実施例2)
第9図ないし第14図は本発明の第2実施例を示す。こ
の実施例では、モデル4にスプール形成部4aが一体に
突設されたものを用い、第1実施例において第7図に示
したように、後加工によってスプールl3を形成する工
程を不要としたことに特徴を;−tている。(Embodiment 2) FIGS. 9 to 14 show a second embodiment of the present invention. In this embodiment, a model 4 in which a spool forming portion 4a is integrally protruded is used, and as shown in FIG. 7 in the first embodiment, the process of forming the spool l3 by post-processing is unnecessary. In particular, it has some special features.
その他の構成、製造工程、作用効果は前述の第1実施例
と同様であるため、同一部材は同し符号で示し、説明は
省略する.
(発明の効果)
以上のように本発明によれば、樹脂により射出成形型を
製造する方法において、キャビテイ側のゲート位置に対
応しかつ埋込まれるモデルの裏面であってコア側に熱良
導部材を予め埋込みコアを注型するようしたから、熱良
導部材によって冷却性が向上し、簡単に優れた冷却回路
を形成することができる。Other configurations, manufacturing processes, and effects are similar to those of the first embodiment described above, so the same members are designated by the same reference numerals and description thereof will be omitted. (Effects of the Invention) As described above, according to the present invention, in the method of manufacturing an injection mold using resin, a portion of the mold that corresponds to the gate position on the cavity side and on the back side of the model to be embedded and that has good thermal conductivity on the core side. Since the member is embedded in advance and the core is cast, cooling performance is improved by the heat conductive member, and an excellent cooling circuit can be easily formed.
また、樹脂により射出成形型を製造する方法において、
キャビテイ側にゲート・スブール部材をモデルとともに
予め埋込むとともに、コア側に、キャビティ側のゲート
位置に対応し、かつ前記モデルの裏面であってコア側に
熱良導部材を予め埋込みコアを注型するようにしたから
、上記効果に加え、機械加工によってキャビテイにスプ
ールを後で形成する工程が不要となり、後加工によりキ
ャビティの損傷を防止でき、かつ製造時間が短縮する、
といった効果がある。In addition, in a method of manufacturing an injection mold using resin,
A gate/subur member is pre-embedded with the model on the cavity side, and a thermally conductive material is pre-embedded on the core side, corresponding to the gate position on the cavity side, and on the back side of the model, and the core is cast. In addition to the above-mentioned effects, this method eliminates the need for the process of later forming a spool in the cavity by machining, prevents damage to the cavity by post-processing, and shortens manufacturing time.
There is an effect like this.
第1図ないし第8図は本発明の第1実施例で、第】図は
モデルの七ノト状態、第2図はキャビティとなる樹脂注
入、一次硬化工程説明図、第3図はコア製作工程、第4
図は型部の分割説明図、第5図はモデルの脱型工程、第
6図は型部の取外し、ネジ部材の取外し工程、第7図は
機械加工、仕上げ加工工程、第8図はモールドヘースに
組込んだ状態の説明図、第9図ないし第14図は本発明
の第2実施例で、第9図はスブール形成部を有するモデ
ルのセント状態、第IO図はキャビティとなる樹脂注入
、一次硬化工程説明図、第11図はコア製作工程、第1
2図は型部の分割工程、第13図はモデルの脱型工程、
第14図はモールドベースへの組込状態説明図、第15
図ないし第21図は従来の製造工程説明図である。
A ・ ・
4 ・
4 a ・
5a,
5A ・
5 B ・
熱良導部材
モデル
スプール形成部材
樹脂
キャビテイ
コアFigures 1 to 8 show the first embodiment of the present invention, in which Figure 1 shows the model in its seven-point state, Figure 2 shows the resin injection and primary curing process that will become the cavity, and Figure 3 shows the core manufacturing process. , 4th
The figure is an explanatory diagram of the division of the mold part, Figure 5 is the model demolding process, Figure 6 is the mold part removal process and screw member removal process, Figure 7 is the machining and finishing process, and Figure 8 is the mold head. Figures 9 to 14 are explanatory diagrams of the assembled state, and Figures 9 to 14 are the second embodiment of the present invention, Figure 9 is the cent state of the model with the Subur forming part, Figure IO is the resin injection that will become the cavity, Primary hardening process explanatory diagram, Figure 11 is the core manufacturing process, 1st
Figure 2 shows the process of dividing the mold part, Figure 13 shows the process of demolding the model,
Fig. 14 is an explanatory diagram of the installation state in the mold base, Fig. 15
21 to 21 are explanatory diagrams of conventional manufacturing steps. A ・ ・ 4 ・ 4 a ・ 5a, 5A ・ 5 B ・ Good thermal conductivity member model Spool forming member Resin cavity core
Claims (2)
キャビティ側のゲート位置に対応しかつ埋込まれるモデ
ルの裏面であってコア側に熱良導部材を予め埋込みコア
を注型することを特徴とした射出成形型の製造方法。(1) In a method of manufacturing an injection mold using resin,
A method for manufacturing an injection mold, characterized by embedding a thermally conductive material in advance on the core side, which corresponds to the gate position on the cavity side and on the back side of the model to be embedded, and then casting the core.
キャビティ側にゲート・スプール部材をモデルとともに
予め埋込むとともに、コア側に、キャビティ側のゲート
位置に対応し、かつ前記モデルの裏面であってコア側に
熱良導部材を予め埋込みコアを注型することを特徴とし
た射出成形型の製造方法。(2) In a method of manufacturing an injection mold using resin,
A gate spool member is embedded in advance with the model on the cavity side, and a thermally conductive material is embedded in advance on the core side, corresponding to the gate position on the cavity side, and on the back side of the model and on the core side, and the core is cast. A method for manufacturing an injection mold, characterized by:
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2012161A JPH0788028B2 (en) | 1990-01-22 | 1990-01-22 | Injection mold manufacturing method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2012161A JPH0788028B2 (en) | 1990-01-22 | 1990-01-22 | Injection mold manufacturing method |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH03216314A true JPH03216314A (en) | 1991-09-24 |
JPH0788028B2 JPH0788028B2 (en) | 1995-09-27 |
Family
ID=11797726
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2012161A Expired - Lifetime JPH0788028B2 (en) | 1990-01-22 | 1990-01-22 | Injection mold manufacturing method |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0788028B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113547672A (en) * | 2021-07-26 | 2021-10-26 | 麦格纳宏立汽车系统集团有限公司 | Foaming mold processing technology capable of realizing rapid first delivery and secondary delivery and reuse |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5824262A (en) * | 1981-08-05 | 1983-02-14 | Nec Corp | Terminal equipment for guarding |
-
1990
- 1990-01-22 JP JP2012161A patent/JPH0788028B2/en not_active Expired - Lifetime
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5824262A (en) * | 1981-08-05 | 1983-02-14 | Nec Corp | Terminal equipment for guarding |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113547672A (en) * | 2021-07-26 | 2021-10-26 | 麦格纳宏立汽车系统集团有限公司 | Foaming mold processing technology capable of realizing rapid first delivery and secondary delivery and reuse |
Also Published As
Publication number | Publication date |
---|---|
JPH0788028B2 (en) | 1995-09-27 |
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