JPH04219220A - Insert mold - Google Patents
Insert moldInfo
- Publication number
- JPH04219220A JPH04219220A JP41254190A JP41254190A JPH04219220A JP H04219220 A JPH04219220 A JP H04219220A JP 41254190 A JP41254190 A JP 41254190A JP 41254190 A JP41254190 A JP 41254190A JP H04219220 A JPH04219220 A JP H04219220A
- Authority
- JP
- Japan
- Prior art keywords
- sheet
- mold
- cutting
- molds
- edge
- 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
- 238000000465 moulding Methods 0.000 claims abstract description 41
- 239000011347 resin Substances 0.000 claims abstract description 22
- 229920005989 resin Polymers 0.000 claims abstract description 22
- 238000010422 painting Methods 0.000 abstract description 10
- 238000010586 diagram Methods 0.000 description 7
- 238000001746 injection moulding Methods 0.000 description 7
- 238000010438 heat treatment Methods 0.000 description 4
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 230000002093 peripheral effect Effects 0.000 description 4
- 238000007796 conventional method Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 1
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000003825 pressing Methods 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
- B29C45/1418—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 the inserts being deformed or preformed, e.g. by the injection pressure
- B29C45/14196—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 the inserts being deformed or preformed, e.g. by the injection pressure the inserts being positioned around an edge of the injected part
-
- 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
- B29C45/1418—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 the inserts being deformed or preformed, e.g. by the injection pressure
- B29C2045/14188—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 the inserts being deformed or preformed, e.g. by the injection pressure trimming the article in the mould
-
- 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
- B29C45/1418—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 the inserts being deformed or preformed, e.g. by the injection pressure
- B29C45/14196—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 the inserts being deformed or preformed, e.g. by the injection pressure the inserts being positioned around an edge of the injected part
- B29C2045/14204—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 the inserts being deformed or preformed, e.g. by the injection pressure the inserts being positioned around an edge of the injected part the edges formed by an intermediate mould part
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
【０００１】0001
【産業上の利用分野】本発明は、予め金型内に絵付シー
トを配置し、成形作業と同時に成形品に絵付シートによ
り絵付作業を行うインサート成形金型に関する。この絵
付シートは、製品に絵付作業を行ったのち何も剥離する
必要がないインサートシート及び絵付作業後に剥離シー
トを剥離する必要がある転写シートの両方を含むもので
あり、絵柄や所定の文字等を製品に形成するためのもの
である。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an insert molding die in which a decorated sheet is placed in the mold in advance and a molded product is decorated with the decorated sheet at the same time as the molding operation. This painted sheet includes both an insert sheet that does not need to be peeled off after painting the product, and a transfer sheet that requires peeling off the release sheet after painting. It is used to form products into products.
【０００２】0002
【従来の技術】従来、この種のインサート成形金型にお
いては、図１０，１１に示すように、型閉め時に、一対
の金型４１，４２のうち一方の金型４２の凹部４２ａに
対して他方の金型４１の凸部４１ａを嵌合させ、この嵌
合時に上記凹部４２ａの内周縁４２ｂと上記凸部４１ａ
の外周縁４１ｂとにより絵付シート４３を剪断して切り
取り、切り取った絵付シートを一対の金型４１，４２で
形成するキャビティ部内に配置したのち成形作業を行う
ようにしている。2. Description of the Related Art Conventionally, in this type of insert molding die, as shown in FIGS. The convex portion 41a of the other mold 41 is fitted, and during this fitting, the inner peripheral edge 42b of the concave portion 42a and the convex portion 41a
The decorative sheet 43 is sheared and cut by the outer peripheral edge 41b, and the cut decorative sheet is placed in a cavity formed by a pair of molds 41 and 42, and then a molding operation is performed.
【０００３】0003
【発明が解決しようとする課題】しかしながら、上記構
造のものでは、射出成形時に金型自体が不均一に熱膨張
する傾向があるため、上記一方の金型４２の凹部４２ａ
の内周縁４２ｂと他方の金型４１の凸部４１ａの外周縁
４１ｂとの隙間調整が非常に難しいといった問題があっ
た。さらに、摺動面に切断残渣が付着するので、金型が
損傷して長時間における実用性に多々問題をきたすとと
もに、成形品にシートを回り込ませることができなかっ
た。[Problems to be Solved by the Invention] However, with the structure described above, the mold itself tends to thermally expand non-uniformly during injection molding.
There was a problem in that it was very difficult to adjust the gap between the inner peripheral edge 42b of the mold 41 and the outer peripheral edge 41b of the convex portion 41a of the other mold 41. Furthermore, since cutting residue adheres to the sliding surface, the mold is damaged, causing many problems in practical use over a long period of time, and it is not possible to wrap the sheet around the molded product.
【０００４】従って、本発明の目的は、上記問題を解決
することにあって、一対の金型間での隙間調整が不要と
なるインサート成形金型を提供することにある。[0004] Accordingly, an object of the present invention is to solve the above-mentioned problems by providing an insert molding die that does not require gap adjustment between a pair of molds.
【０００５】[0005]
【課題を解決するための手段】上記目的を達成するため
に、本発明は、一対の金型間に絵付シートを保持部材で
保持するとともに、射出成形時に熔融樹脂の圧力でもっ
て上記エッジに絵付シートの切断予定部分を押し付けて
該絵付シートを切断するように構成する。すなわち、一
対の金型を備え、かつ、絵付シートをインサート成形前
に金型内に配置するインサート成形金型において、上記
一対の金型で形成されるキャビティ部のアンダーカット
部内に臨みかつ上記絵付シートの切断予定部分に接触す
る絵付シート切断用エッジを有する切断部材と、上記切
断部材との間で上記絵付シートを保持する保持部材とを
備えて、上記切断部材と上記保持部材との間で保持され
た上記絵付シートの切断予定部分が、樹脂成形時に上記
キャビティ部内に射出される熔融樹脂の圧力により、上
記エッジに押し付けられて切断されるように構成する。[Means for Solving the Problems] In order to achieve the above object, the present invention holds a painted sheet between a pair of molds with a holding member, and also applies the painting to the edge using the pressure of molten resin during injection molding. The illustrated sheet is cut by pressing the portion of the sheet to be cut. That is, in an insert molding mold that includes a pair of molds and in which a decorated sheet is placed in the mold before insert molding, the sheet facing into the undercut part of the cavity formed by the pair of molds and the decorated sheet A cutting member having a decorated sheet cutting edge that contacts a portion of the sheet to be cut, and a holding member that holds the decorated sheet between the cutting member and the cutting member, The portion of the held decorated sheet to be cut is pressed against the edge and cut by the pressure of molten resin injected into the cavity during resin molding.
【０００６】上記構成においては、上記切断部材は、上
記エッジの近傍の上記キャビティ部の上記アンダーカッ
ト部内に臨む面に凹部を形成するように構成することも
できる。[0006] In the above structure, the cutting member may be configured to form a concave portion on a surface facing into the undercut portion of the cavity portion near the edge.
【０００７】[0007]
【発明の作用・効果】上記構成によれば、上記一対の金
型間に配置される切断部材に絵付シート切断用エッジを
備えて、上記一対の金型間に上記保持部材で上記絵付シ
ートを保持し、成形時の熔融樹脂の圧力により上記絵付
シートの切断予定部分を上記エッジに押し付けて該エッ
ジで切断する。従って、従来のように一対の金型の凹部
と該凹部に嵌合する凸部との隙間調整を行う必要がなく
なり、煩雑な隙間調整を不要とすることができる。よっ
て、射出成形時に金型自体が不均一に熱膨張しても何ら
問題が生じない。また、摺動面に切断残渣が付着するこ
とがないので、金型の損傷を効果的に防止することがで
きるとともに、成形品にシートを回り込ませることもで
きるようになる。According to the above structure, the cutting member disposed between the pair of molds is provided with an edge for cutting the painted sheet, and the holding member is used to cut the painted sheet between the pair of molds. The section of the decorated sheet to be cut is pressed against the edge by the pressure of the molten resin during molding, and cut at the edge. Therefore, it is no longer necessary to adjust the gap between the concave portion of the pair of molds and the convex portion that fits into the concave portion as in the conventional method, and it is possible to eliminate the need for complicated gap adjustment. Therefore, no problem occurs even if the mold itself thermally expands unevenly during injection molding. Further, since cutting residues do not adhere to the sliding surface, damage to the mold can be effectively prevented, and the sheet can also be passed around the molded product.
【０００８】[0008]
【実施例】以下に、本発明にかかる実施例を図１〜９に
基づいて詳細に説明する。[Embodiments] Hereinafter, embodiments according to the present invention will be explained in detail based on FIGS. 1 to 9.
【０００９】本実施例にかかるインサート成形金型は、
図１，５及び図２（Ａ）に示すように、一方の金型２１
に凸部２１ａを備え、該凸部２１ａにゲート２１ｂを備
える一方、他方の金型２２に凸部嵌合用凹部２２ａを備
え、該凹部２２ａと上記一方の金型２１の凸部２１ａと
の間にキャビティ部２９を形成する。[0009] The insert molding die according to this example is as follows:
As shown in FIGS. 1, 5 and 2(A), one mold 21
is provided with a convex portion 21a, and the convex portion 21a is provided with a gate 21b, while the other mold 22 is provided with a convex fitting recess 22a, and between the concave portion 22a and the convex portion 21a of the one mold 21. A cavity portion 29 is formed in.
【００１０】上記一方の金型２１と他方の金型２２との
間には、上記キャビティ部２９の一部を構成する面を有
する枠体状の切断部材２３と該切断部材２３との間で絵
付シート２４を保持する枠体状の保持部材２７とを備え
る。Between the one mold 21 and the other mold 22, there is a frame-shaped cutting member 23 having a surface forming a part of the cavity portion 29; A frame-shaped holding member 27 that holds the illustrated sheet 24 is provided.
【００１１】上記切断部材２３は、一方の金型２１と接
触する部分でかつ上記キャビティ部２９のアンダーカッ
ト部２９ａ内に臨む部分（図３，４参照）の角部に絵付
シート切断用エッジ２３ａを形成する。このエッジ２３
ａは、図１，５及び図２（Ａ）において一方の金型２１
の凸部２１ａと接触する面と上記キャビティ部２９を構
成する面との交わり部分として構成され、成形時の熔融
樹脂５の圧力により上記絵付シート２４の切断予定部分
２４ａがエッジ２３ａに押し付けられて該部分２４ａで
切断されるようにしている。The cutting member 23 has an edge 23a for cutting the illustrated sheet at the corner of the part that contacts one of the molds 21 and faces into the undercut part 29a of the cavity part 29 (see FIGS. 3 and 4). form. This edge 23
a is one mold 21 in FIGS. 1, 5 and 2(A).
The section 24a of the illustrated sheet 24 to be cut is pressed against the edge 23a by the pressure of the molten resin 5 during molding. It is cut at the portion 24a.
【００１２】一方、上記保持部材２７は、上記切断部材
２３との間で絵付シート２４を挟み込んで保持するとと
もに、金型締付時に一方の金型２１の凸部２１ａと接触
する。On the other hand, the holding member 27 holds the illustrated sheet 24 by sandwiching it between the holding member 27 and the cutting member 23, and also comes into contact with the convex portion 21a of one of the molds 21 when the mold is clamped.
【００１３】また、上記絵付シート２４の主たる材質と
しては、塩化ビニル又はＡＢＳ樹脂など射出時の圧力で
エッジ２３ａに絵付シート２４の切断予定部分２４ａが
押し付けられると該部分２４ａで切断するような材質が
好ましい。この絵付シート２４の切断予定部分２４ａは
成形品の全周に限定されるものではなく、所望の部分に
のみ形成するようにしてもよい。上記絵付シート２４は
、図５に示すように、金型２１，２２の上下において夫
々一対の案内ローラ２５，２５と２６，２６とにより案
内される。The main material of the illustrated sheet 24 is a material such as vinyl chloride or ABS resin that will cut at the portion 24a of the illustrated sheet 24 when the portion 24a to be cut is pressed against the edge 23a by the pressure during injection. is preferred. The portion 24a of the illustrated sheet 24 to be cut is not limited to the entire circumference of the molded product, but may be formed only at a desired portion. The illustrated sheet 24 is guided by a pair of guide rollers 25, 25 and 26, 26 above and below the molds 21, 22, respectively, as shown in FIG.
【００１４】上記構成によれば、図１，５に示すように
、まず、上記切断部材２３を他方の金型２２に接触させ
たのち、切断部材２３と保持部材２７との間で上記絵付
シート２４を所定位置まで移動させたのち上記保持部材
２７を切断部材２３に接触させるように移動させて両部
材２３，２７で上記絵付シート２４を保持する。そして
、図６に示すように、加熱装置２８を両金型２１，２２
間に挿入して絵付シート２４を該加熱装置２８のヒータ
２８ａにより加熱して容易に変形するようにすると同時
に他方の金型２２の吸引孔２２ｂ，…，２２ｂより吸引
動作を行い、他方の金型２２の凹部２２ａの内面に上記
絵付シート２４を沿わせる。このとき、絵付シート２４
の切断予定部分２４ａが上記切断部材２３のエッジ２３
ａに接触するようになる。そして、加熱装置２８を両金
型間から取り除いたのち、図７に示すように一方の金型
２１の凸部２１ａを上記保持部材２７と上記切断部材２
３を貫通させたのち、上記他方の金型２２の凹部２２ａ
内に臨ませてキャビティ部２９を形成する。この状態で
は、上記絵付シート２４の切断予定部分２４ａは一方の
金型２１の凸部２１ａと切断部材２３のエッジ２３ａと
の間に挟み込まれて該エッジ２３ａに当接した状態であ
り、上記絵付シート２４の切断予定部分２４ａより他方
の金型２２側の部分では、図２（Ａ）及び図３に良く示
すように、他方の金型２２の凹部内面との間に若干の隙
間１２が形成されている。そして、図３に示すように、
溶融樹脂５を一方の金型２１の凸部２１ａのゲート２１
ｂから絵付シート２４と一方の金型２１の凸部２１ａと
の間の空間内に射出する。図２（Ａ）に示すように溶融
樹脂５が上記空間内に大略充填されるようになると、図
４に示すように射出圧力により溶融樹脂５がキャビティ
部２９のアンダーカット部２９ａに回り込み、上記絵付
シート２４であって他方の金型２２の凹部内面との間に
隙間１２がある部分を凹部内面側に押圧する。このとき
、絵付シート２４の切断予定部分２４ａが上記切断部材
２３のエッジ２３ａに射出圧力により押し付けられて切
断され、切断された絵付シート２４は溶融樹脂５の圧力
により他方の金型２２の凹部内面及び切断部材２３のキ
ャビティ部構成面に沿うようになる。その後、射出を停
止し、溶融樹脂５を冷却したのち、図８に示すように、
案内ローラ２５，２５，２６，２６により絵付シート２
４をクランプした状態で、一方の金型２１と保持部材２
７と切断部材２３とを他方の金型２２から分離するよう
に一体的に移動させたのち、成型品取出装置３０の吸盤
３０ａ，３０ａで成型品１０を吸着して一方の金型２１
からを取り出す。この成型品１０は図２（Ｂ）に示すよ
うに、アンダーカット部分１０ａの裏面まで絵付シート
２４の端部４ｂが回り込んだ状態になっている。
絵付シート２４によっては、絵付シート２４が貼り付け
られた状態の成型品１０がそのまま完成品となる場合や
、絵付シート２４のベースフィルムを成型品１０に貼り
付いた絵付シート２４から剥がすことによって完成品と
なる場合とがある。成型品１０を取り出したのちは、上
記切断部材２３と上記保持部材２７とを一体的に第２金
型側に移動したのち、保持部材２７を切断部材２３より
離して絵付シート２４を自動的に巻き戻して絵付シート
２４の位置決めを行い、次の樹脂成形動作に備える。
又は、上記切断部材２３をまず第２金型２２に移動した
のち、絵付シート２４と保持部材２７とを移動させて絵
付シート２４を自動的に巻き戻して絵付シート２４の位
置決めを行い、次の樹脂成形に備える。According to the above structure, as shown in FIGS. 1 and 5, first, the cutting member 23 is brought into contact with the other mold 22, and then the illustrated sheet is cut between the cutting member 23 and the holding member 27. 24 is moved to a predetermined position, the holding member 27 is moved so as to come into contact with the cutting member 23, and both members 23 and 27 hold the illustrated sheet 24. Then, as shown in FIG. 6, the heating device 28 is connected to both molds 21 and
The illustrated sheet 24 is inserted between them and heated by the heater 28a of the heating device 28 so that it can be easily deformed.At the same time, a suction operation is performed from the suction holes 22b, ..., 22b of the other mold 22, and the The illustrated sheet 24 is placed along the inner surface of the recess 22a of the mold 22. At this time, the illustrated sheet 24
The portion 24a to be cut is the edge 23 of the cutting member 23.
comes into contact with a. After removing the heating device 28 from between both molds, as shown in FIG.
3, the recess 22a of the other mold 22 is inserted.
A cavity portion 29 is formed facing inward. In this state, the portion 24a of the illustrated sheet 24 to be cut is sandwiched between the convex portion 21a of one of the molds 21 and the edge 23a of the cutting member 23, and is in contact with the edge 23a. As clearly shown in FIGS. 2(A) and 3, a slight gap 12 is formed between the sheet 24 and the inner surface of the recess of the other mold 22 in the part of the sheet 24 that is closer to the other mold 22 than the part 24a to be cut. has been done. And, as shown in Figure 3,
The molten resin 5 is passed through the gate 21 of the protrusion 21a of one of the molds 21.
The liquid is injected into the space between the illustrated sheet 24 and the convex portion 21a of one of the molds 21 from b. As shown in FIG. 2(A), when the molten resin 5 is almost filled into the above-mentioned space, the molten resin 5 wraps around the undercut portion 29a of the cavity portion 29 due to the injection pressure, as shown in FIG. A portion of the illustrated sheet 24 where there is a gap 12 between it and the inner surface of the recess of the other mold 22 is pressed toward the inner surface of the recess. At this time, the portion 24a of the decorative sheet 24 to be cut is pressed against the edge 23a of the cutting member 23 by the injection pressure and cut, and the cut decorative sheet 24 is transferred to the inner surface of the recess of the other mold 22 by the pressure of the molten resin 5. and along the cavity forming surface of the cutting member 23. After that, after stopping the injection and cooling the molten resin 5, as shown in FIG.
The illustrated sheet 2 is moved by the guide rollers 25, 25, 26, 26.
4 is clamped, one of the molds 21 and the holding member 2
7 and the cutting member 23 are integrally moved so as to be separated from the other mold 22, and then the molded product 10 is sucked by the suction cups 30a, 30a of the molded product removal device 30, and the molded product 10 is removed from the other mold 21.
Take it out. As shown in FIG. 2(B), this molded product 10 is in a state in which the end portion 4b of the illustrated sheet 24 wraps around to the back surface of the undercut portion 10a. Depending on the illustrated sheet 24, the molded product 10 with the attached illustrated sheet 24 may become the finished product as is, or the finished product may be completed by peeling off the base film of the illustrated sheet 24 from the illustrated sheet 24 attached to the molded article 10. It may become a product. After taking out the molded product 10, the cutting member 23 and the holding member 27 are integrally moved to the second mold side, the holding member 27 is separated from the cutting member 23, and the illustrated sheet 24 is automatically removed. The illustrated sheet 24 is rewound and positioned to prepare for the next resin molding operation. Alternatively, after first moving the cutting member 23 to the second mold 22, the illustrated sheet 24 and the holding member 27 are moved and the illustrated sheet 24 is automatically rewound to position the illustrated sheet 24, and then the illustrated sheet 24 is positioned. Prepare for resin molding.
【００１５】上記実施例によれば、上記切断部材２３に
絵付シート切断用エッジ２３ａを備えて、該エッジ２３
ａと上記他方の金型２２の凸部２２ａとの間で上記絵付
シート２４の切断予定部分２４ａを挟み込み、射出成形
時の熔融樹脂５の圧力により上記絵付シート２４の切断
予定部分２４ａが上記エッジ２３ａに押し付けられて切
断される。従って、従来のように一対の金型の凹部と該
凹部に嵌合する凸部との隙間調整を行う必要がなくなり
、煩雑な隙間調整を不要とすることができる。よって、
射出成形時に金型自体が不均一に熱膨張しても何ら問題
が生じない。また、摺動面に切断残渣が付着することが
ないので、金型の損傷を効果的に防止することができる
とともに、成形品にシートを回り込ませることもできる
ようになる。According to the above embodiment, the cutting member 23 is provided with the edge 23a for cutting the illustrated sheet, and the edge 23
The portion 24a of the decorated sheet 24 to be cut is sandwiched between the convex portion 22a of the other mold 22, and the portion 24a of the decorated sheet 24 to be cut is pressed against the edge by the pressure of the molten resin 5 during injection molding. It is pressed against 23a and cut. Therefore, it is no longer necessary to adjust the gap between the concave portion of the pair of molds and the convex portion that fits into the concave portion as in the conventional method, and it is possible to eliminate the need for complicated gap adjustment. Therefore,
No problem occurs even if the mold itself thermally expands unevenly during injection molding. Further, since cutting residues do not adhere to the sliding surface, damage to the mold can be effectively prevented, and the sheet can also be passed around the molded product.
【００１６】なお、本発明は上記実施例に限定されるも
のではなく、その他種々の態様で実施できる。It should be noted that the present invention is not limited to the above-mentioned embodiments, but can be implemented in various other embodiments.
【００１７】例えば、図９に示すように、上記切断部材
１１は、上記エッジ１１ａの近傍に大きく湾曲した凹部
１１ｂを形成するようにして、樹脂成形時に溶融樹脂５
により絵付シート２４が上記凹部１１ｂ内にまで押し込
まれると、絵付シート２４の切断予定部分２４ａがエッ
ジ１１ａに対してより大きな力で押し付けられることに
なり、シートそのものが引き込まれるテンションが強く
なることによって切断されやすくなる。For example, as shown in FIG. 9, the cutting member 11 is configured to form a greatly curved recess 11b near the edge 11a, so that the molten resin 5 is removed during resin molding.
When the illustrated sheet 24 is pushed into the recess 11b, the portion 24a of the illustrated sheet 24 to be cut is pressed against the edge 11a with a larger force, and the tension that draws the sheet itself becomes stronger. more likely to be cut.
【００１８】また、成型品１０は樹脂成形後に一方の金
型２１とともに他方の金型２２から取り出されるものに
限らず、他方の金型２２の凹部２２ａ内に残るようにし
てもよい。このとき、上記切断部材２３と上記保持部材
２７は一体的に一方の金型２１とともに他方の金型２２
から離れるようにしてもよいし、一方の金型２１が他方
の金型２２から離れたのち、上記切断部材２３と上記保
持部材２７とが一体的に他方の金型２２から離れるよう
にしてもよい。Furthermore, the molded product 10 is not limited to being removed from the other mold 22 together with the one mold 21 after resin molding, and may remain in the recess 22a of the other mold 22. At this time, the cutting member 23 and the holding member 27 are integrally connected to one mold 21 and the other mold 22.
Alternatively, after one mold 21 is separated from the other mold 22, the cutting member 23 and the holding member 27 may be integrally separated from the other mold 22. good.
【図１】 本発明の一実施例にかかるインサート成形
金型において射出成形前における要部拡大断面図。FIG. 1 is an enlarged sectional view of a main part of an insert molding die according to an embodiment of the present invention before injection molding.
【図２】 上記実施例にかかるインサート成形金型に
おいて射出成形後における要部拡大断面図。FIG. 2 is an enlarged sectional view of a main part of the insert molding die according to the above embodiment after injection molding.
【図３】 上記インサート成形金型における樹脂成形
工程の説明図。FIG. 3 is an explanatory diagram of the resin molding process in the insert molding die.
【図４】 上記インサート成形金型における樹脂成形
工程の説明図。FIG. 4 is an explanatory diagram of the resin molding process in the insert molding die.
【図５】 上記実施例にかかるインサート成形金型を
用いての成形動作の説明図。FIG. 5 is an explanatory diagram of a molding operation using the insert molding die according to the above embodiment.
【図６】 上記実施例にかかるインサート成形金型を
用いての成形動作の説明図。FIG. 6 is an explanatory diagram of a molding operation using the insert molding die according to the above embodiment.
【図７】 上記実施例にかかるインサート成形金型を
用いての成形動作の説明図。FIG. 7 is an explanatory diagram of a molding operation using the insert molding die according to the above embodiment.
【図８】 上記実施例にかかるインサート成形金型を
用いての成形動作の説明図。FIG. 8 is an explanatory diagram of a molding operation using the insert molding die according to the above embodiment.
【図９】 他の実施例におけるかかるインサート成形
金型の要部拡大断面図。FIG. 9 is an enlarged sectional view of a main part of such an insert molding die in another embodiment.
【図１０】 従来のインサート成形金型の概略説明図
。FIG. 10 is a schematic explanatory diagram of a conventional insert molding die.
【図１１】 従来のインサート成形金型の要部拡大断
面図。FIG. 11 is an enlarged sectional view of main parts of a conventional insert molding die.
１０ 成型品、１１ 切断部材、１１ａ エッジ
、１２ 隙間、２１ 第１金型、２１ａ 凸部、
２１ｂ ゲート、２２ 第２金型、２２ａ 凹部
、２３ 切断部材、２３ａ エッジ、２４ 絵付
シート、２４ａ 切断予定部分、２５，２６案内ロー
ラ、２７ 保持部材、２８ 加熱装置、２９ キ
ャビティ部、２９ａ アンダーカット部、３０ 成
形品取出装置。10 Molded product, 11 Cutting member, 11a Edge, 12 Gap, 21 First mold, 21a Convex part,
21b gate, 22 second mold, 22a recess, 23 cutting member, 23a edge, 24 painted sheet, 24a section to be cut, 25, 26 guide rollers, 27 holding member, 28 heating device, 29 cavity section, 29a undercut section , 30 Molded product removal device.
Claims (2)
つ、絵付シート（２４）をインサート成形前に金型内に
配置するインサート成形金型において、上記一対の金型
（２１，２２）で形成されるキャビティ部（２９）のア
ンダーカット部（２９ａ）内に臨みかつ上記絵付シート
（２４）の切断予定部分（２４ａ）に接触する絵付シー
ト切断用エッジ（１１ａ，２３ａ）を有する切断部材（
１１，２３）と、上記切断部材（１１，２３）との間で
上記絵付シート（２４）を保持する保持部材（２７）と
を備えて、上記切断部材（１１，２３）と上記保持部材
（２７）との間で保持された上記絵付シート（２４）の
切断予定部分（２４ａ）が、樹脂成形時に上記キャビテ
ィ部内に射出される熔融樹脂（５）の圧力により、上記
エッジ（２３ａ）に押し付けられて切断されるようにし
たことを特徴とするインサート成形金型。Claim 1. An insert molding mold comprising a pair of molds (21, 22) and in which a decorated sheet (24) is placed in the mold before insert molding, wherein the pair of molds (21, 22) ) A cutter having a decorated sheet cutting edge (11a, 23a) facing into the undercut part (29a) of the cavity part (29) formed by the above-mentioned decorated sheet (24) and in contact with the intended cutting part (24a) of the said decorated sheet (24). Element(
11, 23) and a holding member (27) for holding the illustrated sheet (24) between the cutting member (11, 23), the cutting member (11, 23) and the holding member ( The portion (24a) to be cut of the illustrated sheet (24) held between the sheet (27) is pressed against the edge (23a) by the pressure of the molten resin (5) injected into the cavity during resin molding. An insert molding die characterized in that the insert molding die is cut by cutting.
（１１ａ）の近傍の上記キャビティ部（２９）の上記ア
ンダーカット部（２９ａ）内に臨む面に凹部（１１ｂ）
を形成するようにした請求項１に記載のインサート成形
金型。2. The cutting member (11) has a recess (11b) on a surface facing into the undercut portion (29a) of the cavity portion (29) near the edge (11a).
The insert molding die according to claim 1, wherein the insert molding die is configured to form a mold.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2412541A JPH0753397B2 (en) | 1990-12-19 | 1990-12-19 | Insert mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2412541A JPH0753397B2 (en) | 1990-12-19 | 1990-12-19 | Insert mold |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04219220A true JPH04219220A (en) | 1992-08-10 |
| JPH0753397B2 JPH0753397B2 (en) | 1995-06-07 |
Family
ID=18521370
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2412541A Expired - Lifetime JPH0753397B2 (en) | 1990-12-19 | 1990-12-19 | Insert mold |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0753397B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0692358A1 (en) * | 1994-06-24 | 1996-01-17 | Corell Resin Technology B.V. | Method for manufacturing a plastic board and a board obtained with this method |
| EP0698465A1 (en) * | 1994-08-25 | 1996-02-28 | GEBR. HAPPICH GmbH | Construction element such as covering or trim element or the like as well as method for manufacturing such an element |
| NL9401392A (en) * | 1994-08-29 | 1996-04-01 | Corell Resin Technology Bv | Method for fabricating a plastic lamina provided with a covering film, and lamina obtained via said method |
| KR100618571B1 (en) * | 2004-12-30 | 2006-08-31 | 전성도 | Device and method for manufacture of interior parts for automobiles |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6141517A (en) * | 1984-08-03 | 1986-02-27 | Toyoda Gosei Co Ltd | Manufacture of molded item with skin |
| JPS6321387U (en) * | 1986-07-28 | 1988-02-12 | ||
| JPS63126711A (en) * | 1986-11-17 | 1988-05-30 | Nissha Printing Co Ltd | Preparation and mold for injection molded product with simultaneous in-mold decoration |
-
1990
- 1990-12-19 JP JP2412541A patent/JPH0753397B2/en not_active Expired - Lifetime
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6141517A (en) * | 1984-08-03 | 1986-02-27 | Toyoda Gosei Co Ltd | Manufacture of molded item with skin |
| JPS6321387U (en) * | 1986-07-28 | 1988-02-12 | ||
| JPS63126711A (en) * | 1986-11-17 | 1988-05-30 | Nissha Printing Co Ltd | Preparation and mold for injection molded product with simultaneous in-mold decoration |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0692358A1 (en) * | 1994-06-24 | 1996-01-17 | Corell Resin Technology B.V. | Method for manufacturing a plastic board and a board obtained with this method |
| EP0698465A1 (en) * | 1994-08-25 | 1996-02-28 | GEBR. HAPPICH GmbH | Construction element such as covering or trim element or the like as well as method for manufacturing such an element |
| NL9401392A (en) * | 1994-08-29 | 1996-04-01 | Corell Resin Technology Bv | Method for fabricating a plastic lamina provided with a covering film, and lamina obtained via said method |
| KR100618571B1 (en) * | 2004-12-30 | 2006-08-31 | 전성도 | Device and method for manufacture of interior parts for automobiles |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0753397B2 (en) | 1995-06-07 |
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| Date | Code | Title | Description |
|---|---|---|---|
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 19970610 |