JPH04189118A - Injection molding method and injection mold - Google Patents
Injection molding method and injection moldInfo
- Publication number
- JPH04189118A JPH04189118A JP31846690A JP31846690A JPH04189118A JP H04189118 A JPH04189118 A JP H04189118A JP 31846690 A JP31846690 A JP 31846690A JP 31846690 A JP31846690 A JP 31846690A JP H04189118 A JPH04189118 A JP H04189118A
- Authority
- JP
- Japan
- Prior art keywords
- mold
- metal piece
- synthetic resin
- resin
- protrusion
- 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 claims description 22
- 239000007924 injection Substances 0.000 title claims description 22
- 238000001746 injection moulding Methods 0.000 title claims description 10
- 229920003002 synthetic resin Polymers 0.000 claims abstract description 41
- 239000000057 synthetic resin Substances 0.000 claims abstract description 41
- 229920005989 resin Polymers 0.000 claims abstract description 25
- 239000011347 resin Substances 0.000 claims abstract description 25
- 239000002184 metal Substances 0.000 claims description 39
- 239000002131 composite material Substances 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 5
- 238000009413 insulation Methods 0.000 abstract description 4
- 238000005266 casting Methods 0.000 abstract 2
- 238000010276 construction Methods 0.000 abstract 1
- 239000003795 chemical substances by application Substances 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
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
- B29C45/14065—Positioning or centering articles in the mould
- B29C45/14073—Positioning or centering articles in the mould using means being retractable during injection
-
- 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
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
- B29C45/14065—Positioning or centering articles in the mould
- B29C45/14073—Positioning or centering articles in the mould using means being retractable during injection
- B29C2045/14081—Positioning or centering articles in the mould using means being retractable during injection centering means retracted by the injection pressure
-
- 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
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
- B29C45/14065—Positioning or centering articles in the mould
- B29C2045/14163—Positioning or centering articles in the mould using springs being part of the positioning means
-
- 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
- B29C2045/1784—Component parts, details or accessories not otherwise provided for; Auxiliary operations not otherwise provided for
- B29C2045/1787—Mould parts driven by pressure of injected material
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Injection Moulding Of 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 合成樹脂の部材を射出成形によって作るため
の射出成形方法および射出成形用金形に関するものであ
４
従来の技術
以下、射出成形方法の中で金属片を合成樹脂部材の中に
一体に埋め込むための方法の一例を説明すも 第３図に
おいて、射出成形用金形２１は上型２２と下型２３から
構成されている。２４は上型２２と下型２３によって形
成された内部空間に充填された合成樹脂であり、これか
合成樹脂製品となム ２５は合成樹脂製品２４の中に埋
め込まれた金属片である。 ２６は上型２２に突設され
た突起であり、金属片２５を押し 金属片２５を合成樹
脂製品２４内の所定の位置に位置決めするためのもので
ある。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to an injection molding method and injection mold for producing synthetic resin members by injection molding. An example of a method for integrally embedding a metal piece into a synthetic resin member will be described below. In FIG. 3, an injection mold 21 is composed of an upper mold 22 and a lower mold 23. 24 is a synthetic resin filled in the internal space formed by the upper mold 22 and the lower mold 23, and is a synthetic resin product. 25 is a metal piece embedded in the synthetic resin product 24. Reference numeral 26 denotes a protrusion protruding from the upper die 22 for pushing the metal piece 25 and positioning the metal piece 25 at a predetermined position within the synthetic resin product 24.
射出成形工程においては まず下型２３に金属片２５を
仮保持させる。次に上型２２と下型２３とを嵌め合わせ
も すると、突起２６が金属片２５の一部を押じ 金属
片２５は金型内の所定の位置に位置決めされる。次にス
プールランナー２７を通し 供給口２８から合成樹脂が
注入され 合成樹脂製品２４の形に充填される。In the injection molding process, first, the metal piece 25 is temporarily held in the lower mold 23. Next, when the upper mold 22 and the lower mold 23 are fitted together, the protrusion 26 presses a part of the metal piece 25, and the metal piece 25 is positioned at a predetermined position within the mold. Next, synthetic resin is injected from the supply port 28 through the spool runner 27 and filled into the shape of the synthetic resin product 24.
発明が解決しようとする課題
しかしながら以上のような構成で（よ 次のような問題
があも すなわ板 成形された合成樹脂製品２４に突起
２６によって穴が残る事となり、この穴によって金属片
２５が辻らか外部に露出する事となる。従ってこのよう
にして製造したものは金属片２５と外部との絶縁を確保
する事が出来ず、絶縁性が重視される場所で使用する事
か出来なかつｔら
課題を解決するための手段
本発明は以上の課題を解決するた敢 一対の型の中の一
方に中間型を移動可能に保持し 上記中間型に柱状部を
形成するとともにこの中間型を保持する型に柱状部と嵌
り合うシリンダ部を形成して柱状部がピストンとなるよ
うにＬ 上記中間型に形成された突起部を金属片に当接
させてこの金属片の位置決めを行なうためのばねを設け
、樹脂注入時に注入された合成樹脂を上記シリンダ部へ
進入させる樹脂通路を設け、上記合成樹脂の圧力によっ
て上記ピストン部番ミ 上記中間型の突起部が金属片か
ら離れる方向に力が加わるようにし九作 用
このようにしたことにより、樹脂注入時に注入された合
成樹脂が上記シリンダ部へ進入し その圧力かばねの弾
圧力に抗して中間型を移動させ、突起部は金属片から離
れ 突起部と金属片との間に生じた隙間に合成樹脂か進
入する事となる。Problems to be Solved by the Invention However, with the above-described structure, the following problems arise: The projections 26 leave holes in the molded synthetic resin product 24, and these holes cause the metal pieces 25 to Therefore, the parts manufactured in this way cannot ensure insulation between the metal piece 25 and the outside, and cannot be used in places where insulation is important. Means for Solving the Problems The present invention aims to solve the above problems.An intermediate mold is movably held in one of a pair of molds, a columnar part is formed in the intermediate mold, and a columnar part is formed in the intermediate mold. A cylinder part that fits into the columnar part is formed on the mold that holds the L, so that the columnar part becomes a piston.L To position the metal piece by bringing the protrusion formed on the intermediate mold into contact with the metal piece. A spring is provided, and a resin passage is provided through which the synthetic resin injected during resin injection enters the cylinder part, and the pressure of the synthetic resin causes the protrusion of the piston part to move away from the metal piece. By doing this, the synthetic resin injected at the time of resin injection enters the cylinder part and moves the intermediate mold against the pressure and the elastic force of the spring, and the protrusion part is formed by a metal piece. When the resin separates from the metal piece, the synthetic resin will enter the gap created between the protrusion and the metal piece.
実 施 例
以下、本発明における射出成形方法および射出成形用金
形の実施例を図面を参照して説明する。EXAMPLES Hereinafter, examples of the injection molding method and the injection mold according to the present invention will be described with reference to the drawings.
第１図は本実施例の射出成形用金形の断面図であも ２
は射出成形用金形］の上監 ３は同下型である。第１図
では射出成形用金形１の上型２と下型３を嵌め合わせ、
かつ樹脂注入前の状態を示す。Figure 1 is a cross-sectional view of the injection mold of this example.
3 is the upper mold for injection molding. 3 is the lower mold. In Figure 1, the upper mold 2 and lower mold 3 of the injection mold 1 are fitted together,
And shows the state before resin injection.
４は合成樹脂製品の形に形成された空間であり、この空
間に合成樹脂が注入され 合成樹脂製品か作られる事と
なム 下型３には金属片を仮保持するための溝が形成さ
れている。 ５は下型３に仮保持された金属片であム
７は上型２に設けられ合成樹脂の通路となるスプールラ
ンナーである。4 is a space formed in the shape of a synthetic resin product, and a synthetic resin is injected into this space to make a synthetic resin product.A groove for temporarily holding a metal piece is formed in the lower mold 3. ing. 5 is a metal piece temporarily held on the lower mold 3.
A spool runner 7 is provided on the upper die 2 and serves as a passage for the synthetic resin.
９は金属片５を所定の位置に位置決めするための中間型
である。中間型９は 上型２に形成された収容空間１３
に上下方向に移動自在なように収容されている。 １０
は中間型９を下方に付勢すためのはねである。 １１は
中間型９に突設された突起部であり、この突起部１１か
金属片５に当接可能に構成されている。そしてはね］０
の弾圧力によって金属片５が浮き上がらないように金属
片５を下型３の方へ押し 合成樹脂製品内の金属片５の
位置が合成樹脂製品内の所定の位置からずれるという不
良を防止している。9 is an intermediate mold for positioning the metal piece 5 at a predetermined position. The intermediate mold 9 has a housing space 13 formed in the upper mold 2.
It is housed in such a way that it can be moved vertically. 10
is a spring for urging the intermediate mold 9 downward. Reference numeral 11 denotes a protrusion protruding from the intermediate die 9, and the protrusion 11 is configured to be able to come into contact with the metal piece 5. And splash] 0
Push the metal piece 5 toward the lower mold 3 so that the metal piece 5 does not lift up due to the elastic force of There is.
１４は中間型９に設けられたピストン阻１２は上型２に
形成されたシリンダ一部であり、 ピストン部１４はシ
リンダ一部１２に収容されている。A piston block 12 provided on the intermediate mold 9 is a part of a cylinder formed in the upper mold 2, and the piston part 14 is housed in the cylinder part 12.
そして樹脂注入工程において、合成樹脂は樹脂通路１５
を通ってシリンダ一部１２の下部空間にも注入され そ
の合成樹脂の圧力によってピストン部１４を上方へ押し
上げる事が出来るように構成されている。Then, in the resin injection process, the synthetic resin is poured into the resin passage 15.
The synthetic resin is injected into the lower space of the cylinder portion 12 through the resin, and the pressure of the synthetic resin is configured to push the piston portion 14 upward.
第２図は本実施例において、合成樹脂の射出成形が完了
した状態の断面図である。樹脂注入工程において、合成
樹脂はスプールランナー７を通じ供給口８から合成樹脂
製品を作るための空間４に注入され この空間４に充填
され４６は空間４に充填された合成樹脂によって作られ
た合成樹脂製品であａ
また樹脂注入工程ではシリンダ一部１２の下部空間にも
合成樹脂が注入され その合成樹脂の圧力によってピス
トン部１４は上方へ力を受ける。FIG. 2 is a sectional view of a state in which injection molding of synthetic resin is completed in this embodiment. In the resin injection process, the synthetic resin is injected from the supply port 8 through the spool runner 7 into the space 4 for making synthetic resin products. In the product a.In the resin injection process, synthetic resin is also injected into the lower space of the cylinder part 12, and the piston part 14 receives an upward force due to the pressure of the synthetic resin.
そして中間型９はばね１０の付勢力に抗して上方へ押し
上げられ 突起部１１は金属片５から離れも 突起部１
１が金属片５から離れると、この両者の間に生じた隙間
に合成樹脂が進入する事となａ 従って、出来上がった
合成樹脂製品は 突起部１１によって穴が残る事が無く
、この部分で金属片５が外部に露出する事がなくなる。Then, the intermediate die 9 is pushed upward against the biasing force of the spring 10, and the protrusion 11 is separated from the metal piece 5.
1 separates from the metal piece 5, the synthetic resin will enter the gap created between the two. Therefore, the finished synthetic resin product will not have any holes left due to the protrusion 11, and the metal will be removed in this area. Piece 5 is no longer exposed to the outside.
発明の効果
以上のように本発明（よ 一対の型の中の一方に中間型
を移動可能に保持し 上記中間型に柱状部を形成すると
ともにこの中間型を保持する型に柱状部と嵌り合うシリ
ンダ部を形成して上記柱状部がピストンとなるように構
成し 突起部か金属片を押すように弾圧するばねとを設
けるとともに樹脂注入時に注入された合成樹脂か上記シ
リンダ部へ進入するように樹脂通路を設けた事により、
樹脂注入時に注入された合成樹脂か上記シリンダ部へ進
入し その圧力によって中間型をばねの弾圧力に抗して
移動させるので、突起部は金属片から離れ 突起部と金
属片との間に生じた隙間に合成樹脂が進入する事となり
、成形された合成樹脂製品に突起部によって穴か残る事
が無くなり、金属片の露出を無くし 例えは絶縁性を向
上させる事が可能となる。Effects of the Invention As described above, the present invention (as shown in FIG. A cylinder part is formed and the columnar part acts as a piston, and a spring is provided to press the protrusion or metal piece, and the synthetic resin injected during resin injection enters the cylinder part. By providing a resin passage,
The synthetic resin injected during resin injection enters the cylinder and its pressure moves the intermediate mold against the elastic force of the spring, causing the protrusion to separate from the metal piece and form between the protrusion and the metal piece. This allows the synthetic resin to enter the gaps created by the molded synthetic resin product, eliminating holes left by the protrusions in the molded synthetic resin product, eliminating exposure of metal pieces, and improving insulation.
第１図は本発明の実施例における射出成形用金形の樹脂
注入前の状態を示す断面＠ 第２図は同実施例の射出成
形用金形の樹脂注入後の状態を示す断面＠ 第３図は従
来の射出成形用金形の樹脂注入後の状態を示す断面図で
ある。
１・・・射出成形用金形 ２・・・上型３・・・下
型 ５・・・金属片７・・・スプールラン
ナー ９・・・中間型１３・・・収容空間 １０
・・・はね１１・・・突起部 １４・・・ピス
トン部１２・・・シリンダ一部 １５・・・樹脂通路
代理人の氏名 弁理士 小鍜治 明 ほか２名第 １ｒ
ｉＩ
第２図
Ｔ５ ’Figure 1 is a cross section showing the state of the injection mold in the embodiment of the present invention before resin injection; Figure 2 is the cross section showing the state of the injection mold in the same embodiment after resin injection; The figure is a sectional view showing the state of a conventional injection mold after resin injection. 1... Mold for injection molding 2... Upper mold 3... Lower mold 5... Metal piece 7... Spool runner 9... Intermediate mold 13... Housing space 10
... Splash 11 ... Protrusion 14 ... Piston part 12 ... Part of cylinder 15 ... Name of resin passage agent Patent attorney Akira Okaji and 2 others 1r
iI Figure 2 T5'
Claims (2)
容した状態で同空間へ合成樹脂を注入することによって
合成樹脂製品を作る射出成形方法であって、 一方の型に金属片を仮保持し、 一方と他方の型を互いに嵌め合せた際に一方の型に設け
られた中間型の一部を金属片に弾圧させてこの金属片の
位置決めを行ない、 樹脂注入時に、注入された合成樹脂の圧力によって上記
中間型を金属片から離れるように押すようにした事を特
徴とする射出成形方法。(1) An injection molding method in which a synthetic resin product is made by injecting synthetic resin into a space formed by a pair of molds with a metal piece housed in the space, in which the metal piece is temporarily placed in one mold. When one mold and the other mold are fitted together, a part of the intermediate mold provided in one mold is pressed against the metal piece to position this metal piece, and when resin is injected, the injected composite An injection molding method characterized in that the intermediate mold is pushed away from the metal piece by the pressure of the resin.
容した状態で同空間へ合成樹脂を注入することによって
合成樹脂製品を作る金型において、突起部を備えた中間
型を一方の型に移動可能に保持し、 上記中間型に柱状部を形成するとともに上記中間型を保
持する型に上記柱状部と嵌り合うシリンダ部を形成して
上記柱状部がピストンとなるように構成し、 少なくとも一方の型に金属片を仮保持するための係止手
段を形成し、 上記中間型の突起部を金属片に当接させ、金属片を上記
係止手段の方へ弾圧させることによって金属片の位置決
めを行なうためのばねを設け、樹脂注入時に注入された
合成樹脂を上記シリンダ部へ進入させる樹脂通路を設け
、上記シリンダ部へ進入して来た合成樹脂の圧力によっ
て上記ピストン部に上記中間型の突起部を金属片から離
す方向に力が加わるように構成した事を特徴とする射出
成形用金形。(2) In a mold for manufacturing a synthetic resin product by injecting synthetic resin into a space formed by a pair of molds with a metal piece housed in the space, an intermediate mold with a protrusion is placed in one mold. a columnar part is formed on the intermediate mold, and a cylinder part that fits into the columnar part is formed on the mold holding the intermediate mold so that the columnar part serves as a piston, and at least A locking means for temporarily holding the metal piece is formed on one of the molds, and the protrusion of the intermediate mold is brought into contact with the metal piece, and the metal piece is elastically pressed toward the locking means. A spring is provided for positioning, and a resin passage is provided through which the synthetic resin injected during resin injection enters the cylinder part, and the pressure of the synthetic resin entering the cylinder part causes the piston part to move into the intermediate mold. An injection mold characterized in that a force is applied in a direction to separate the protrusion from the metal piece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31846690A JPH04189118A (en) | 1990-11-22 | 1990-11-22 | Injection molding method and injection mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31846690A JPH04189118A (en) | 1990-11-22 | 1990-11-22 | Injection molding method and injection mold |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04189118A true JPH04189118A (en) | 1992-07-07 |
Family
ID=18099433
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP31846690A Pending JPH04189118A (en) | 1990-11-22 | 1990-11-22 | Injection molding method and injection mold |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04189118A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1996033061A1 (en) * | 1995-04-20 | 1996-10-24 | United Technologies Automotive Systems, Inc. | Method and mold design for in-mold decoration of injection molded articles |
| CN102468190A (en) * | 2010-11-12 | 2012-05-23 | 三星半导体(中国)研究开发有限公司 | Packaging mould and semiconductor packaging process using same |
-
1990
- 1990-11-22 JP JP31846690A patent/JPH04189118A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1996033061A1 (en) * | 1995-04-20 | 1996-10-24 | United Technologies Automotive Systems, Inc. | Method and mold design for in-mold decoration of injection molded articles |
| CN102468190A (en) * | 2010-11-12 | 2012-05-23 | 三星半导体(中国)研究开发有限公司 | Packaging mould and semiconductor packaging process using same |
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