JPH1029215A - Mold for molding plastic product and manufacture of the mold - Google Patents

Mold for molding plastic product and manufacture of the mold

Info

Publication number
JPH1029215A
JPH1029215A JP18444196A JP18444196A JPH1029215A JP H1029215 A JPH1029215 A JP H1029215A JP 18444196 A JP18444196 A JP 18444196A JP 18444196 A JP18444196 A JP 18444196A JP H1029215 A JPH1029215 A JP H1029215A
Authority
JP
Japan
Prior art keywords
mold
molding
product
temperature
heat medium
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
Application number
JP18444196A
Other languages
Japanese (ja)
Inventor
Takeshi Kato
毅 加藤
Hirofumi Tateyama
弘文 舘山
Hideyuki Ishiyama
英行 石山
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tohoku Munekata Co Ltd
Original Assignee
Tohoku Munekata Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Tohoku Munekata Co Ltd filed Critical Tohoku Munekata Co Ltd
Priority to JP18444196A priority Critical patent/JPH1029215A/en
Publication of JPH1029215A publication Critical patent/JPH1029215A/en
Pending legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17Component parts, details or accessories; Auxiliary operations
    • B29C45/72Heating or cooling
    • B29C45/73Heating or cooling of the mould
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C33/00Moulds or cores; Details thereof or accessories therefor
    • B29C33/02Moulds or cores; Details thereof or accessories therefor with incorporated heating or cooling means
    • B29C33/04Moulds or cores; Details thereof or accessories therefor with incorporated heating or cooling means using liquids, gas or steam
    • B29C2033/042Meander or zig-zag shaped cooling channels, i.e. continuous cooling channels whereby a plurality of cooling channel sections are oriented in a substantial parallel direction
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17Component parts, details or accessories; Auxiliary operations
    • B29C45/72Heating or cooling
    • B29C45/73Heating or cooling of the mould
    • B29C45/7312Construction of heating or cooling fluid flow channels
    • B29C2045/7325Mould cavity linings for covering fluid channels or provided therewith

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)

Abstract

PROBLEM TO BE SOLVED: To contrive improvement of the quick heating and cooling and temperature controllability of a mold by a method wherein an insert piece, which is formed by assembling a temperature-controlling molding surface member, in which a heating medium circulating flow path is formed between a thin plate and a covering layer by eluting cavity molding material, in a packing, is assembled onto the molding surface of the mold. SOLUTION: By eluting wax under heat, a heating medium circulating flow path is formed so as to obtain a temperature controlling molding surface member 1. By assembling the temperature controlling molding surface member 1 in a packing 10, an insert piece 12 is produced. At a cavity 22 side, resin is quickly heated up under high temperature at its charging by the heating medium flowing in the heating medium circulating flow path formed on the rear surface of the thin plate of a mold surface quick heating and cooling insert piece 12. After that, the resin is quickly cooled and solidified under low temperature and finally removed from a mold 20. The heating medium flowing in the heating medium circulating flow path is supplied from a heating medium temperature controller, with which quick heating and cooling can be possible.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【産業上の利用分野】本発明は、プラスチック樹脂を材
料とし、成形工程中に金型表面温度を短時間に精度良く
加熱又は冷却することにより、高品質な表面を有するプ
ラスチック製品を得る金型とこの金型の製法に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mold for obtaining a plastic product having a high quality surface by heating or cooling a mold surface temperature in a short time with high precision during the molding process using a plastic resin as a material. And the manufacturing method of this mold.

【0002】[0002]

【従来の技術】金型を常温のまま使用する従来のプラス
チック成形では、溶融した熱可塑性樹脂等の材料樹脂が
金型内で急速に冷却、固化、収縮するのに起因して、製
品表面にウェルド、フローマーク、ひけ等と呼ばれる外
観不良が生じるほか、樹脂の機械的強度補強のため樹脂
内に含入されている収縮の小さいガラス等のフィラー、
ブタジエン等のゴム粒子が樹脂表面に選択的に残され、
これが樹脂表面に微細な凹凸あるいは光学的特性の異な
る部分を形成するため、高光沢な製品表面外観が損なわ
れる。このような外観不良、光沢不良は、製品の見栄え
を損なって価値を低下させると共に、更に製品表面に塗
装を施す場合にも均質な塗装を阻害して美観を損ね、補
修のための費用が高くなる問題がある。
2. Description of the Related Art In conventional plastic molding in which a mold is used at room temperature, a material resin such as a molten thermoplastic resin rapidly cools, solidifies, and shrinks in the mold. In addition to appearance defects such as welds, flow marks, sink marks, etc., fillers such as glass with small shrinkage included in the resin for reinforcing the mechanical strength of the resin,
Rubber particles such as butadiene are selectively left on the resin surface,
This forms fine irregularities or portions having different optical characteristics on the resin surface, thereby impairing the appearance of a highly glossy product surface. Such poor appearance and poor gloss reduce the value of the product by impairing the appearance of the product, and also impair uniform appearance when painting the product surface, impair the aesthetic appearance, and increase the cost for repair. There is a problem.

【0003】以上のような外観不良、光沢不良は、樹脂
充填時の樹脂流れのコントロール、あるいは材料樹脂に
含入されるフィラー、ゴム粒子等の量の低減、粒径の小
型化等、材料樹脂自体の改良によりある程度は改善でき
るが、最も効果的に外観不良の発生を阻止し得る手段
は、金型の可視面側であって材料樹脂が流れる部分を高
温に加熱することである。
[0003] The above-mentioned poor appearance and poor gloss are caused by controlling the resin flow at the time of filling the resin, reducing the amount of fillers and rubber particles contained in the material resin, and reducing the particle size. Although improvement can be made to some extent by the improvement of itself, the most effective means for preventing the appearance defect from occurring is to heat the portion on the visible surface side of the mold where the material resin flows to a high temperature.

【0004】このような考え方に基づき、製品可視面側
の金型表面を例えば電熱ヒータで加熱する等の方法が提
案されている。しかし、この方法は、加熱に時間がかか
り、成形サイクルが延びて製品コストを高くする問題が
ある。そこで、金型の温度応答性を改善して金型加熱時
間の短縮を図るようにした提案があり、これには次のよ
うなものがある。
[0004] Based on such a concept, there has been proposed a method of heating the mold surface on the visible side of the product by, for example, an electric heater. However, this method has a problem in that it takes a long time for heating, the molding cycle is extended, and the product cost is increased. Therefore, there is a proposal for improving the temperature responsiveness of the mold so as to shorten the time required for heating the mold.

【0005】金型の外周に誘導コイルを設けたもの
(実開昭62−111832号公報)。 金型に銅パイプから成る高周波誘導コイルを設け、パ
イプ内に冷却水を流すようにしたもの(特開昭63−1
5707号公報)。 電熱ヒータを設けた可動入子を金型に出し入れ可能と
したもの(特開昭63−15719号公報)。 金型外部に金型温度調節用媒体を急速に加熱、冷却あ
るいは加熱、冷却した媒体を切り替えて金型に供給する
装置を設け、供給される加熱、冷却媒体を金型内の温度
調節用媒体循環路に通して金型を加熱、冷却できるよう
にしたもの(特開昭62−15707号公報、特開昭6
2−208918号公報、特公平7−25115号公
報)。
[0005] A mold in which an induction coil is provided on the outer periphery of the mold (Japanese Utility Model Laid-Open No. 62-111182). A high-frequency induction coil made of a copper pipe is provided in a mold so that cooling water flows in the pipe (Japanese Patent Laid-Open No. 63-1).
No. 5707). One in which a movable insert provided with an electric heater can be taken in and out of a mold (JP-A-63-15719). A device for rapidly heating, cooling, or switching between heated and cooled media for supplying the mold temperature adjusting medium to the mold outside the mold, and supplying the supplied heating and cooling medium to the temperature adjusting medium in the mold. A device in which a mold can be heated and cooled by passing through a circulation path (JP-A-62-15707, JP-A-62-15707,
JP-A-2-208918, JP-B-7-25115).

【0006】[0006]

【発明が解決しようとする課題】上記公知例からも明ら
かなように、製品外観不良は、金型の可視面側で材料樹
脂が流れる表面を高温に加熱することによって改善でき
るが、加熱に時間がかかれば成形サイクルが延びて生産
性が低下し、製品コストの高騰を招く。また、特に光沢
不良、反りに関して言えば、金型を高温に加熱後、急速
に冷却した時に最も高光沢な成形品、反りのない成形品
が得られる。このためには急速な加熱のみならず、急速
な冷却を併せて行うことが必要である。光沢不良の改善
では、単に高温に加熱して成形するだけでは、得られる
光沢の高さに限界があり、また温度制御精度が不十分で
高温になりすぎた場合には、材料樹脂の収縮量がさらに
大きくなり、後収縮等によりガラス等のフィラー、ブタ
ジエン等のゴム粒子が樹脂表面に残されて光沢不良が再
度発生する問題がある。従って、製品の外観不良、光沢
不良、反りを改善するには、急速に金型表面を加熱及び
冷却できる金型構造が必要不可欠である。
As is clear from the above-mentioned known examples, the poor appearance of the product can be improved by heating the surface where the material resin flows on the visible surface side of the mold to a high temperature. This increases the molding cycle, lowers productivity, and raises product costs. In particular, regarding the gloss defect and warpage, when the mold is heated to a high temperature and then rapidly cooled, a molded product with the highest gloss and a molded product without warpage can be obtained. For this purpose, it is necessary to perform not only rapid heating but also rapid cooling. In the improvement of poor gloss, simply heating and molding at a high temperature has a limit on the height of the gloss that can be obtained, and if the temperature control accuracy is insufficient and the temperature becomes too high, the shrinkage of the material resin will increase. And filler particles such as glass and rubber particles such as butadiene are left on the resin surface due to post-shrinkage and the like, which causes a problem of poor gloss again. Therefore, a mold structure capable of rapidly heating and cooling the mold surface is indispensable for improving poor appearance, poor gloss, and warpage of a product.

【0007】また、金型表面を加熱する方法について
も、上記公知例には以下のような問題がある。、の
誘導コイルを設けるものは、金型内組み込みに制約が多
く金型が大型化する。の電熱ヒータを有する可動入子
を設けたものは、金型に可動入子の挿入部を設けなくて
はならず、金型構造が複雑となる。また、加熱手段の汎
用性がないと共に、冷却については自然冷却によるた
め、成形サイクルが長くなる。の外部装置より加熱、
冷却媒体を金型内の温度調節用媒体循環路に通して金型
表面を加熱、冷却するものは、汎用性があり、かつ金型
構造も特殊な加工を要さない特徴を有するが、反面、通
常設けられている範疇の金型内の温度調節用媒体循環路
を使用した場合、加熱、冷却する金型部分の熱容量が大
きく温度的ロスが生じ、加熱、冷却に時間がかかる。ま
た、最終的には金型表面の温度応答が遅いために、温度
制御精度が悪くなる問題がある。本発明は、上記事情に
鑑みて創案されたものであり、プラスチック製品の成形
において、急速加熱、冷却及び温度制御性の向上を図る
ことにより、外観不良のない、高品位、高光沢、かつ反
りのないプラスチック製品を成形できる金型とこの金型
の製法を提供することを目的とする。
[0007] Also, regarding the method of heating the mold surface, the above-mentioned known examples have the following problems. In the case where the induction coil is provided, there are many restrictions on the incorporation into the mold, and the mold becomes large. When the movable insert having the electric heater is provided, the mold must be provided with an insertion portion for the movable insert, and the mold structure becomes complicated. In addition, the heating means is not versatile, and the cooling is performed by natural cooling, so that the molding cycle becomes longer. Heating from an external device,
Heating and cooling the mold surface by passing the cooling medium through the temperature control medium circulation path in the mold has the versatility and the mold structure does not require special processing, but on the other hand, However, when a temperature control medium circulation path in a mold in a normally provided category is used, the heat capacity of a mold portion to be heated and cooled is large, causing a temperature loss, and it takes time for heating and cooling. In addition, since the temperature response of the mold surface is finally slow, there is a problem that the temperature control accuracy is deteriorated. The present invention has been made in view of the above circumstances. In molding plastic products, by improving rapid heating, cooling and temperature controllability, high quality, high gloss, and warpage without poor appearance are provided. It is an object of the present invention to provide a mold capable of molding a plastic product having no resin and a method of manufacturing the mold.

【0008】[0008]

【課題を解決するための手段】本発明の構成は次のとお
りである。 1.製品の表面形状に合わせた成形面形成用薄板の裏面
に、後から溶融可能な空洞成形材料により循環流路条を
形成する、次に、前記循環流路条の表面に被覆層を形成
し、その後前記空洞成形材料を溶し出すことにより、薄
板と被覆層間に熱媒循環流路を形成して温調用成形面部
材を製作する、次に、前記温調用成形面部材を金型の成
形面に組み込む、ことを特徴とするプラスチック製品成
形用金型の製法。 2.空洞成形材料として、ワックスを用いる前記1記載
のプラスチック製品成形用金型の製法。 3.電鋳法により循環流路条の表面に金属製の被覆層を
形成する前記1又は2記載のプラスチック製品成形用金
型の製法。 4.メッキ法により循環流路条の表面に金属の被覆層を
形成する前記1又は2記載のプラスチック製品成形用金
型の製法。
The configuration of the present invention is as follows. 1. On the back surface of the molding surface forming thin plate according to the surface shape of the product, to form a circulation channel with a cavity molding material that can be melted later, then form a coating layer on the surface of the circulation channel, Thereafter, the cavity molding material is melted out to form a heat medium circulating flow path between the thin plate and the coating layer to produce a temperature control molding surface member. Next, the temperature control molding surface member is formed into a molding surface of a mold. A method for manufacturing a mold for molding plastic products, which is incorporated in a mold. 2. 2. The method for producing a plastic product molding die as described in 1 above, wherein wax is used as the cavity molding material. 3. 3. The method for producing a plastic product molding die according to the above 1 or 2, wherein a metal coating layer is formed on the surface of the circulation channel by electroforming. 4. 3. The method for producing a metal mold for forming a plastic product according to the above item 1 or 2, wherein a metal coating layer is formed on the surface of the circulation channel by a plating method.

【0009】5.製品面と同一形状を有するマスターの
正面側に接近させて製品面に対し同じ3次元形状かつ高
密度となるよう、空洞成形材料により循環流路条を形成
し、これを電鋳槽内に浸漬して薄板と被覆層を同時に一
体成形する前記1又は2記載のプラスチック製品成形用
金型の製法。 6.製品の表面形状に合わせた薄板の裏面に、後から溶
融可能な空洞成形材料により循環流路条を形成したの
ち、前記循環流路条の表面に金属被覆層を形成し、その
後前記空洞成形材料を溶し出すことにより、薄板と被覆
層間に熱媒循環流路を形成した温調用成形面部材を製作
し、これをバッキング内に組み込んで入れ駒を作り、こ
の入れ駒を金型の成形面に組み込んで成るプラスチック
製品成形用金型。
[0009] 5. Close the front side of the master having the same shape as the product surface, form a circulation channel with a cavity molding material so that it has the same three-dimensional shape and high density with respect to the product surface, and immerse it in the electroforming tank 3. The method for producing a plastic product molding die according to the above item 1 or 2, wherein the thin plate and the coating layer are integrally molded at the same time. 6. After forming a circulation channel with a cavity molding material that can be melted later on the back surface of the thin plate according to the surface shape of the product, a metal coating layer is formed on the surface of the circulation channel, and then the cavity molding material is formed. To form a molding surface member for temperature control in which a heat medium circulation channel is formed between the thin plate and the coating layer, and this is incorporated into a backing to form a insert. Mold for molding plastic products, which is built into the product.

【0010】7.製品面に対し同じ3次元形状かつ高密
度となるように面状の熱媒循環流路を薄板の裏面に形成
して成る前記6記載のプラスチック製品成形用金型。 8.熱媒循環流路内に乱流発生部材を組み込んで成る前
記6又は7記載のプラスチック製品成形用金型。 9.製品の可視面側にのみ温調用成形面部材を組み込ん
で成る前記6又は7又は8記載のプラスチック製品成形
用金型。 10.製品に接する成形面の一部にのみ、温調用成形面
部材を組み込んで成る前記6又は7又は8又は9記載の
プラスチック製品成形用金型。 11.温調形成面部材をバッキング内に組み込む際、温
調用成形面部材の裏面とバッキングの組み込み面間に断
熱層を形成して成る前記6又は7又は8又は9又は10
記載のプラスチック製品成形用金型。
[0010] 7. 7. The plastic product mold according to the above item 6, wherein a planar heat medium circulation channel is formed on the back surface of the thin plate so as to have the same three-dimensional shape and high density with respect to the product surface. 8. 8. The mold for molding a plastic product according to 6 or 7, wherein the turbulence generating member is incorporated in the heat medium circulation channel. 9. 9. The plastic product molding die as set forth in 6 or 7 or 8, wherein a temperature control molding surface member is incorporated only on the visible surface side of the product. 10. 10. The mold for molding a plastic product according to the above 6 or 7, or 8 or 9, wherein the molding surface member for temperature control is incorporated only in a part of the molding surface in contact with the product. 11. 6 or 7 or 8 or 9 or 10 or 10 wherein a heat insulating layer is formed between the back surface of the temperature control forming surface member and the backing mounting surface when incorporating the temperature control forming surface member into the backing.
The mold for molding plastic products as described.

【0011】[0011]

【作用】金型の成形面に組み込まれた温調用成形面部材
の熱媒循環流路内には、成形時には高温の熱媒が供給さ
れて循環し、樹脂充填製品の成形面を先ず急速に加熱す
る。そして、充填が終わると、低温の熱媒に切り換えら
れてこの低温熱媒が熱媒循環流路内を循環し、成形品の
成形面を急速に冷却する。熱媒循環流路内に組み込まれ
た乱流発生部材は、循環する熱媒に縮流、拡流、旋回流
等の乱流を発生させて伝熱効率を高める。
[Function] A high-temperature heat medium is supplied and circulated in the heat medium circulation channel of the temperature control molding surface member incorporated in the molding surface of the mold at the time of molding, and the molding surface of the resin-filled product is rapidly cooled. Heat. Then, when the filling is completed, the medium is switched to a low-temperature heat medium, and the low-temperature heat medium circulates in the heat medium circulation channel, thereby rapidly cooling the molding surface of the molded article. The turbulence generating member incorporated in the heat medium circulation flow channel generates turbulence such as contraction, expansion, and swirling flow in the circulating heat medium to increase heat transfer efficiency.

【0012】[0012]

【発明を実施するための形態】金型の成形面に組み込ま
れる温調用成形面部材の薄板及びこの裏面の熱媒循環流
路は、製品形状に沿った例えば3次元形状に形成され
る。この温調用成形面部材は、金型に対して直接組み込
んでもよいが、組み立て上の問題及び金型表面部位の熱
容量を小さく形成して金型表面の加熱、冷却時温度の応
答性、温度制御性を改善し、これにより成形サイクルを
延ばすことなく短時間で金型表面温度を高温に制御した
り、低温に制御して外観不良のない高品位、高光沢かつ
反りのない製品を成形するためには、温調用成形面部材
を断熱層を介してバッキングに組み込んで入れ駒を製作
し、これを金型(キャビティ)の成形面の全部又は一部
に組み込むと良い。
BEST MODE FOR CARRYING OUT THE INVENTION A thin plate of a molding surface member for temperature adjustment incorporated in a molding surface of a mold and a heat medium circulation channel on the back surface thereof are formed, for example, in a three-dimensional shape along the product shape. The temperature control molding surface member may be directly incorporated into the mold, but it is difficult to assemble the mold and to reduce the heat capacity of the surface of the mold to reduce the heat response of the mold surface, the responsiveness during cooling, and the temperature control. To improve moldability and thereby control the mold surface temperature to a high temperature in a short time without extending the molding cycle, or to control a low temperature to produce a high-quality, high-gloss and warp-free product without poor appearance In this case, it is preferable that a temperature control molding surface member is incorporated into a backing via a heat insulating layer to produce an insert, which is incorporated into all or a part of the molding surface of a mold (cavity).

【0013】金型の特徴は、金型の成形面に前記成形面
に沿った熱媒循環流路を形成したことにある。特に流路
は、金型材に孔を設ける場合はもとより、銅等の金属管
を用いて金型表面近くに形成する場合にも曲げR半径の
制限があるなどして、思い通りに配置することは、特に
3次元形状の金型の場合難しかったが、本発明の場合
は、薄板の裏面にワックス等により先ず循環流路条を形
成し、この表面を電鋳法あるいはメッキで被覆した後、
ワックス等を溶かし出して流路を形成するようにしてい
るため、流路を任意の位置に、任意の形状と径で構成す
ることができる。よって、流路、形状に制限がなく、金
型表面に近い位置に高密度に配置でき、かつ3次元の複
雑な形状であっても問題はない。
A feature of the mold is that a heat medium circulating flow path is formed on the molding surface of the mold along the molding surface. In particular, the flow path is not limited to the case where a hole is formed in the mold material, but also has a limitation on the bending radius when formed near the mold surface using a metal tube such as copper. Particularly, in the case of a three-dimensional mold, it was difficult, but in the case of the present invention, firstly, a circulation channel is formed on the back surface of the thin plate with wax or the like, and the surface is coated by electroforming or plating.
Since the wax or the like is dissolved to form the flow path, the flow path can be formed at an arbitrary position and with an arbitrary shape and diameter. Therefore, there is no limitation on the flow path and the shape, and it can be arranged at a high density at a position close to the mold surface, and there is no problem even if it has a three-dimensional complicated shape.

【0014】流路を形成するための空洞成形材料は、後
で溶出させることができるものであればワックス以外に
もアルミニウム、低融点合金あるいは化合物、水溶性ポ
リマー等を用いることができる。そして、これらの材料
を溶かす方法としては、アルカリ液中に浸漬する、加熱
する、等の方法がある。
As the cavity molding material for forming the flow path, aluminum, a low melting point alloy or compound, a water-soluble polymer, or the like can be used other than wax as long as it can be eluted later. As a method for dissolving these materials, there is a method of immersing in an alkaline solution, heating, or the like.

【0015】薄板(金型の成形面)と熱媒循環流路の間
は、金型温度の応答性を考えれば薄ければ薄い程良い
が、成形時の金型内圧に耐えるに充分な5mm以上が望
ましい。但し、板厚が薄くても、熱媒循環流路の裏面側
の断熱層を樹脂型材料等で構成することで必要強度が得
られれば5mm以下として熱伝導の即効性を高めるよう
にしてもよい。
The thinner the space between the thin plate (molding surface of the mold) and the heat medium circulation flow path, the thinner it is better in consideration of the mold temperature responsiveness. However, 5 mm is sufficient to withstand the mold internal pressure during molding. The above is desirable. However, even if the plate thickness is small, if the required strength can be obtained by forming the heat insulating layer on the back surface side of the heat medium circulating channel with a resin type material or the like, the heat conduction can be immediately reduced to 5 mm or less to enhance the immediate effect. Good.

【0016】熱媒循環流路の径は、金型内での高密度達
成および内部流体の流速をかせいでレイノルズ数を大き
くし、熱交換効果を高めるためには細い方が有利であ
り、内径Φ5mm程度以下が望ましい。金型温度を高温
にして成形する時の温度調節用熱媒体としてシリコンオ
イル等を用いる場合、レイノルズ数が小さく層流となる
ことが多いが、この場合には流路内に、乱流発生部材と
して、例えば邪魔板を入れるか、流路内に突起物を形成
して流体の流れを乱し、乱流とするのが伝熱率を高める
ためには望ましい。又、流路内に邪魔板等を入れること
が困難であれば、流路の出入り口及び途中の一部に邪魔
板等を入れてもよく、あるいは事前にワックス等に突起
物を入れておいたり、ワックス等の形状を流れが縮流、
拡流、旋回流となるよう複雑な形状にしておいて熱媒循
環流路を形成する方法も採用できる。
The diameter of the heat medium circulating flow path is preferably smaller in order to increase the Reynolds number and increase the heat exchange effect by utilizing high density in the mold and increasing the flow rate of the internal fluid. It is desirable that the diameter is about 5 mm or less. When silicone oil or the like is used as a heat medium for temperature adjustment when molding at a high mold temperature, the Reynolds number is small and a laminar flow is often used. For example, it is desirable to disturb the flow of the fluid by inserting a baffle plate or to form a protrusion in the flow path to form a turbulent flow in order to increase the heat transfer rate. Also, if it is difficult to insert a baffle plate or the like into the flow path, a baffle plate or the like may be placed at the entrance and exit of the flow path and a part of the way, or a projection may be put in advance in wax or the like. , The flow contracts through the shape of wax, etc.
It is also possible to adopt a method of forming a heat medium circulation channel in a complicated shape so as to form a diverging or swirling flow.

【0017】次に、熱媒循環流路の断面形状は、円形、
四角形、不規則形状、或いは偏平な面状等いかなるもの
でも良いが、伝熱及び電鋳層あるいはメッキ層のつきま
わりを考慮すると台形状が望ましい。
Next, the cross section of the heat medium circulating channel is circular,
Any shape such as a square, an irregular shape, or a flat surface may be used, but a trapezoidal shape is preferable in consideration of heat transfer and the throwing power of the electroformed layer or the plated layer.

【0018】熱媒循環流路の裏面側には、樹脂材等によ
り断熱層を形成して温度制御する金型部分の熱容量を小
さくし、金型表面温度の制御性および応答性を向上させ
ると良い。断熱層には、熱伝導性の低いプラスチックを
はじめとする高分子材料、セラミックあるいはこれらに
補強のための充填材を混入した材料、発泡金属を始めと
するポーラスな金属等が採用できる。
On the back side of the heat medium circulating flow path, a heat insulating layer is formed of a resin material or the like to reduce the heat capacity of the mold portion for controlling the temperature and to improve the controllability and response of the mold surface temperature. good. As the heat insulating layer, a polymer material such as a plastic having low thermal conductivity, a ceramic or a material obtained by mixing a filler for reinforcement, a porous metal such as a foamed metal, or the like can be used.

【0019】本発明に係る金型を用いて成形できる樹脂
には、ポリオレフィン樹脂、ポリスチレン樹脂、ABS
樹脂などの汎用性樹脂やポリカーボネート樹脂、ポリア
ミド樹脂などの工業用樹脂だけでなく、各種の樹脂を混
合したものや補強剤を混合したものも使用できる。
The resin that can be molded using the mold according to the present invention includes polyolefin resin, polystyrene resin, ABS
Not only general-purpose resins such as resins, industrial resins such as polycarbonate resins and polyamide resins, but also those obtained by mixing various resins and those obtained by mixing reinforcing agents can be used.

【0020】上記のように、金型表面温度を精度良く、
短時間で効果的に加熱、冷却できるプラスチック製品成
形用金型を用いて製品可視面側金型表面温度を樹脂充填
時に樹脂のガラス移転温度近傍まで急加熱した後、急冷
して金型温度を下げる射出成形を行った場合、高温の製
品可視面側金型表面に接する樹脂表面には固化層が発達
しにくく、変形しやすいために、通常行われる低温な金
型表面温度で樹脂表面に固化層が急速に発達して形成、
保存されるところのフローマーク、ウェルドといった製
品外観不良が発生しない。また、樹脂が金型表面に充分
密着して転写性が良いために樹脂の離型が遅れ、この間
に充分な強度まで固化層が発達するために、樹脂の熱収
縮による影響が少なく、熱収縮に起因して製品表面に生
じる外観不良、例えば窪み状のヒケ、あるいは材料樹脂
中収縮の小さいガラス等のフィラー、ブタジエン等のゴ
ム粒子の樹脂表面への選択的残存に起因する光沢不良が
発生せず、外観不良のない高品位な製品を得ることがで
きる。
As described above, the mold surface temperature can be accurately determined.
Using a mold for plastic product molding that can heat and cool effectively in a short period of time, after rapidly heating the surface temperature of the mold on the visible side of the product to near the glass transfer temperature of the resin when filling the resin, quenching and cooling the mold temperature When injection molding is performed, a solidified layer hardly develops on the resin surface in contact with the mold surface on the visible surface side of the high-temperature product, and is easily deformed, so it solidifies on the resin surface at the usual low mold surface temperature. Layers develop and form rapidly,
Product appearance defects such as flow marks and welds to be stored do not occur. In addition, the release of the resin is delayed because the resin is sufficiently adhered to the mold surface and the transferability is good. During this time, the solidified layer develops to a sufficient strength, so that the influence of the heat shrinkage of the resin is small. Appearance defects caused on the product surface due to, for example, dent-like sink marks, or poor gloss due to selective residual of rubber particles such as butadiene or fillers such as glass or glass filler with small shrinkage in the resin material. And a high-quality product without appearance defects can be obtained.

【0021】特に光沢については、金型温度制御精度が
不十分で高温になりすぎた場合には材料樹脂の収縮量が
更に大きくなり、後収縮等によりガラス等のフィラー、
ブタジエン等のゴム粒子が樹脂表面に残されて光沢不良
が再度発生する懸念があるが、本金型は表面温度の応答
性、制御性が良いために、安定して高光沢な製品が得ら
れる。更に、金型表面を高温にして成形する場合、冷却
が遅いと製品に反り等の変形も生じやすいが、本金型で
は急速に金型表面を冷却できるため製品の反り、変形も
生じない。しかも、金型表面の加熱、冷却が短時間で精
度良く達成できるため、成形サイクルが延びて量産性を
損なうことがなく、低コストで高品位な成形が得られ
る。
In particular, regarding gloss, when the mold temperature control accuracy is insufficient and the temperature is too high, the amount of shrinkage of the material resin further increases, and filler such as glass due to post-shrinkage, etc.
Rubber particles such as butadiene may remain on the resin surface and cause poor gloss again.However, since this mold has good responsiveness and controllability of surface temperature, a stable and high-gloss product can be obtained. . Furthermore, when the mold surface is formed at a high temperature, if the cooling is slow, the product is likely to be warped or deformed. However, in the present mold, the mold surface can be rapidly cooled, so that the product does not warp or deform. In addition, since the heating and cooling of the mold surface can be accurately achieved in a short time, the molding cycle is not extended and the mass productivity is not impaired, and high-quality molding can be performed at low cost.

【0022】[0022]

【実施例1】金型の成形面に熱媒循環流路を形成するた
めの部材は、図1に示す工程を経て製作される。先ず、
(A)に示すように、マスター7の表面に電鋳法を用い
てニッケルから成る約2mm厚さの薄板2を形成する。
次に、(B)に示すように前記成形した薄板2の裏面に
温度制御用熱媒循環流路を形成するための流路条4をワ
ックス3で形成する。次に(C)に示すように電鋳液
8′を満した電鋳槽8内にマスター7と共に薄板2を浸
漬してワックス3の表面にニッケル被覆層5を形成す
る。図中9は電極である。次に、ワックス3に熱を加え
て溶かし出すことにより、薄板2と被覆層5間に空洞、
つまり熱媒循環流路6を形成したのち、マスター7を取
り外ずして温調用成形面部材1を得る。次に、(E)に
示すように前記温調用成形面部材1を断熱層11を間に
挿入してバッキング10内に組み込んで入れ駒12を製
作し、この入れ駒12を金型の成形面内に組み込む。
Embodiment 1 A member for forming a heat medium circulation channel on a molding surface of a mold is manufactured through the steps shown in FIG. First,
As shown in FIG. 1A, a thin plate 2 made of nickel and having a thickness of about 2 mm is formed on the surface of the master 7 by electroforming.
Next, as shown in (B), a flow path strip 4 for forming a temperature control heat medium circulation flow path is formed of wax 3 on the back surface of the formed thin plate 2. Next, as shown in (C), the thin plate 2 is immersed together with the master 7 in an electroforming tank 8 filled with an electroforming solution 8 ′ to form a nickel coating layer 5 on the surface of the wax 3. 9 is an electrode in the figure. Next, a heat is applied to the wax 3 to melt it, thereby forming a cavity between the thin plate 2 and the coating layer 5,
In other words, after forming the heat medium circulating flow path 6, the molding surface member 1 for temperature control is obtained without removing the master 7. Next, as shown in (E), the temperature control molding surface member 1 is inserted into the backing 10 with the heat insulating layer 11 inserted therebetween to produce the insert piece 12, and the insert piece 12 is attached to the molding surface of the mold. Incorporate within.

【0023】[0023]

【実施例2】この実施例は、実施例1で製作された入れ
駒12を、金型20の成形面に一体に組み込んだ実施例
であって、図2は金型の全体図、図3は入れ駒12の説
明図、図4はA−A′線断面図、図5は金型の熱媒流入
口と流出口の説明図である。図2に示すプラスチック射
出成形用金型20は、大きく分けてコア21(製品非可
視面側)とキャビティー22(製品可視面側)からな
り、共に図外の射出成形機に連結されており、コア21
とキャビティー22とが開閉可能にされている。コア2
1とキャビティー22には製品の外形状に対応した凹部
23が形成されており、キャビティー22の所定箇所に
設けられたスプルー24を介して図外の射出成形機から
溶融プラスチックが凹部23に流し込まれ、製品が成形
されるようになっている。この製品の製品可視面側(キ
ャビティー22側)には、金型表面急加熱、冷却用入れ
駒12内が組み込まれており、この入れ駒12の薄板2
の裏面に形成された熱媒循環流路6内を流れる熱媒によ
り、樹脂はその充填時に高温で急速に加熱され、その後
低温で急速に冷却されて固化し、その後金型20内から
取り出される。なお、熱媒循環流路6内を流れる熱媒
は、図外の高周波加熱機及び冷却機を備え、急速加熱、
冷却が可能な熱媒温度調節機より供給される。
Embodiment 2 This embodiment is an embodiment in which the insert piece 12 manufactured in Embodiment 1 is integrated into the molding surface of the mold 20. FIG. 2 is an overall view of the mold, and FIG. Is an explanatory view of the insert 12, FIG. 4 is a sectional view taken along the line AA ', and FIG. 5 is an explanatory view of a heat medium inlet and an outlet of a mold. The plastic injection mold 20 shown in FIG. 2 is roughly divided into a core 21 (product invisible surface side) and a cavity 22 (product visible surface side), and both are connected to an injection molding machine (not shown). , Core 21
And the cavity 22 can be opened and closed. Core 2
1 and a cavity 22 corresponding to the outer shape of the product are formed in the cavity 22, and molten plastic is injected into the recess 23 from an injection molding machine (not shown) through a sprue 24 provided at a predetermined position of the cavity 22. It is poured and the product is shaped. On the product visible surface side (the cavity 22 side) of this product, the inside of the insert 12 for rapid heating and cooling of the mold surface is incorporated.
The resin is heated rapidly at a high temperature at the time of filling by the heat medium flowing in the heat medium circulation flow path 6 formed on the back surface of the resin, then rapidly cooled at a low temperature to be solidified, and thereafter taken out from the mold 20. . The heat medium flowing in the heat medium circulation flow path 6 includes a high-frequency heater and a cooler (not shown),
It is supplied from a heat medium temperature controller capable of cooling.

【0024】図3、図4は、金型表面急加熱、冷却用の
熱媒循環流路6を形成した温調用成形面部材1を固定し
た入れ駒12の説明図であって、製品可視面に接する薄
板2はNi−Crで形成されており、内部には熱媒流入
口13と流出口14に結ばれた熱媒循環流路6が形成さ
れている。この熱媒循環流路6は薄板2の金型内部面に
ワックス3で管路を形成後に電鋳槽で表面に被覆層5を
形成し、その後ワックス3を溶出させて空洞化すること
により薄板2と一体的に構成されている。熱媒循環流路
6の断面形状は、5mm×5mmの正方形で、ピッチは
12mmである。この熱媒循環流路6と製品に接する金
型表面急加熱、冷却用入れ駒12の表面間距離は2mm
とした。また、熱媒循環流路6の裏面には、2mm程度
厚のエポキシおよび補強材で構成される断熱層11を設
け、急加熱、冷却を行う金型部位を熱的に隔離すること
で熱容量を小さく構成した。
FIGS. 3 and 4 are explanatory views of the insert 12 to which the temperature-adjusting molding surface member 1 in which the heat medium circulation channel 6 for rapid heating and cooling of the mold surface is formed is fixed. Is formed of Ni—Cr, and a heat medium circulation channel 6 connected to a heat medium inlet 13 and an outlet 14 is formed therein. The heat medium circulating flow path 6 is formed by forming a pipe on the inner surface of the mold of the thin plate 2 with the wax 3 and then forming the coating layer 5 on the surface in an electroforming tank. 2 and one. The cross-sectional shape of the heat medium circulation channel 6 is a square of 5 mm × 5 mm, and the pitch is 12 mm. The distance between the surfaces of the mold 12 for heating and cooling the mold surface in contact with the heat medium circulation channel 6 and the product is 2 mm.
And In addition, a heat insulating layer 11 made of epoxy and reinforcing material having a thickness of about 2 mm is provided on the back surface of the heat medium circulating flow path 6, and a heat capacity is achieved by thermally isolating a mold portion for performing rapid heating and cooling. It was made small.

【0025】図2〜図5の金型を用いてガラスフィラー
20%含入のABS樹脂(15G20、ガラス転移温度
98℃、日本合成ゴム)を用い、製品可視面側金型表面
温度を樹脂充填時100℃、冷却時60℃に急加熱、冷
却して射出成形を行った。また、この時の成形サイクル
(射出〜保圧〜冷却〜取出し、型開閉)は50秒で、加
熱に要した時間は13秒、冷却に要した時間は20秒で
あった。製品可視面の光沢度測定結果は、光沢度92と
ガラスフィラー入りにもかかわらず高光沢な製品が得ら
れた。また、製品の取出し時点において、製品は充分に
固化しており、製品の変形、離型の問題はなかった。
Using the molds shown in FIGS. 2 to 5, an ABS resin (15G20, glass transition temperature 98 ° C., Japan Synthetic Rubber) containing 20% glass filler was used to fill the mold surface temperature on the visible side of the product with the resin. Injection molding was performed by rapidly heating and cooling to 100 ° C. and 60 ° C. during cooling. The molding cycle (injection-holding pressure-cooling-unloading, mold opening / closing) at this time was 50 seconds, the time required for heating was 13 seconds, and the time required for cooling was 20 seconds. As a result of measuring the glossiness of the visible surface of the product, a product with a high glossiness was obtained despite having a glossiness of 92 and containing a glass filler. Further, at the time of taking out the product, the product was sufficiently solidified, and there was no problem of deformation and release of the product.

【0026】[0026]

【実施例3】実施例2と同じ装置と耐衝撃性ポリスチレ
ン(400、ガラス転移温度97℃、旭化成工業)を用
い、製品可視面側金型表面温度を樹脂充填時100℃、
冷却時60℃に急速加熱、冷却して射出成形を行った。
また、この時の成形サイクル(射出〜保圧〜冷却〜取出
し、型開閉)は50秒で、加熱に要した時間は、13
秒、冷却に要した時間は20秒であった。
Example 3 Using the same apparatus as in Example 2 and impact-resistant polystyrene (400, glass transition temperature 97 ° C., Asahi Kasei Kogyo), the surface temperature of the mold on the visible side of the product was set at 100 ° C. when the resin was filled.
Upon cooling, the mixture was rapidly heated to 60 ° C. and cooled to perform injection molding.
The molding cycle (injection-holding pressure-cooling-unloading, mold opening / closing) at this time is 50 seconds, and the time required for heating is 13 seconds.
Seconds and the time required for cooling was 20 seconds.

【0027】なお、製品非可視面側の金型面には、成形
品にヒケ、ウェルド等の外観不良を発生しやすくするた
めにボス、リブ形状彫り込み及び製品可視面側金型との
押し切り突起を設けて成形を行った。得られた成形品可
視面には、ヒケ、ウェルド、フローマーク等の外観不良
がなく、光沢も光沢度96と高光沢で高品位な製品が得
られた。また、製品に反り等の変形も見られなかった。
The mold surface on the product invisible surface side is provided with a boss, a rib-shaped engraving, and a push-out protrusion with the product visible surface side mold so as to easily cause appearance defects such as sink marks and welds on the molded product. And molding was performed. On the visible surface of the obtained molded product, there were no appearance defects such as sink marks, welds, and flow marks, and a high-quality product having a gloss of 96 and a high gloss was obtained. No deformation such as warpage was observed in the product.

【0028】[0028]

【実施例4】図6は熱媒循環流路6内に乱流発生部材と
しての邪魔板16を入れて循環する熱媒に縮流、拡流、
旋回流を発生させて伝熱率を高めるようにした実施例で
ある。なお、邪魔板16に換えて、図7に示すように、
流れを乱す形状の突起物15を熱媒循環流路6内に形成
してもよい。
Embodiment 4 FIG. 6 shows that a baffle plate 16 as a turbulent flow generating member is inserted into a heat medium circulating flow path 6 so that the heat medium circulates through the heat medium.
This is an embodiment in which a swirling flow is generated to increase the heat transfer rate. In addition, instead of the baffle plate 16, as shown in FIG.
A protrusion 15 that disturbs the flow may be formed in the heat medium circulation channel 6.

【実施例5】実施例1〜4の温調用成形面部材1は、薄
板2の裏面にワックス3を用いて熱媒循環流路6を形成
しているが、この薄板2と熱媒循環流路6を電鋳法によ
り同時に一体成形することも可能である。この方法は、
マスター7の表面側に薄板2に相当する間隔をあけてワ
ックス3により熱媒循環流路条4を配置し、この状態で
電鋳槽8内に浸漬して薄板2に相当する成形面と熱媒循
環流路6を一体形成するものである。
Fifth Embodiment In the molding surface member 1 for temperature control of the first to fourth embodiments, the heat medium circulation flow path 6 is formed on the back surface of the thin plate 2 using the wax 3. It is also possible to simultaneously form the path 6 integrally by electroforming. This method
The heating medium circulation flow path 4 is arranged with wax 3 on the surface side of the master 7 at an interval corresponding to the thin plate 2, and is immersed in the electroforming tank 8 in this state, and the molding surface corresponding to the thin plate 2 is heated. The medium circulation channel 6 is formed integrally.

【0029】[0029]

【比較例1】実施例の金型表面急加熱、冷却用入れ駒1
2をS55C製で熱媒循環流路6が横穴状に2本機械加
工してある通常の金型構造を模擬した入れ駒に交換した
以外は、実施例2と同じ装置、樹脂を用い、樹脂充填時
の製品可視面側金型表面温度を同じ100℃、冷却時6
0℃の温度条件で成形を行った。この時の成形サイクル
(射出〜保圧〜冷却〜取出し、型開閉)は84秒で、加
熱に要した時間は39秒、冷却に要した時間は40秒
と、成形サイクルが68%長くなった。また、製品可視
面の光沢度測定結果も、光沢度88と実施例2の製品光
沢度に較べ低下した。また、逆に成形サイクルを実施例
2と同じ50秒にした場合、製品光沢は著しく低く、ま
た取出し時点の製品温度が高く変形しやすかった。
Comparative Example 1 Insert 1 for Rapid Heating and Cooling of Mold Surface of Example
The same apparatus and resin as in Example 2 were used, except that S2C was replaced with an insert that simulated a normal mold structure in which two heat medium circulation channels 6 were machined in a horizontal hole shape using S55C. The same mold surface temperature at the visible side of the product at the time of filling is 100 ° C, and at the time of cooling 6
The molding was performed under the temperature condition of 0 ° C. At this time, the molding cycle (injection-holding pressure-cooling-unloading, mold opening / closing) was 84 seconds, the time required for heating was 39 seconds, the time required for cooling was 40 seconds, and the molding cycle was 68% longer. . Also, the gloss measurement result of the visible surface of the product was 88, which was lower than that of the product of Example 2. Conversely, when the molding cycle was set to 50 seconds, the same as in Example 2, the product gloss was extremely low, and the product temperature at the time of removal was high and the product was easily deformed.

【0030】[0030]

【比較例2】実施例の金型表面急加熱、冷却用入れ駒1
2をS55C製で熱媒循環流路6が横穴状に2本あいた
通常の金型構造を模擬した入れ駒に交換した以外は、実
施例3と同じ装置、樹脂を用い、樹脂充填時の製品可視
面側金型表面温度を同じ100℃、冷却時60℃の温度
条件で成形を行った。この時の成形サイクル(射出〜保
圧〜冷却〜取出し、型開閉)は84秒で、加熱に要した
時間は39秒、冷却に要した時間は40秒と、成形サイ
クルが68%長くなった。また、製品可視面の光沢度測
定結果も、光沢度91と実施例2の製品光沢度に較べ低
下した他、製品の反り変形が大きかった。
Comparative Example 2 Insert 1 for Rapid Heating and Cooling of Mold Surface of Example
2 was replaced with an insert that simulates a normal mold structure made of S55C and having two heat medium circulation channels 6 in a horizontal hole shape. Molding was performed under the same temperature conditions of the visible surface side mold surface of 100 ° C. and cooling at 60 ° C. At this time, the molding cycle (injection-holding pressure-cooling-unloading, mold opening / closing) was 84 seconds, the time required for heating was 39 seconds, the time required for cooling was 40 seconds, and the molding cycle was 68% longer. . In addition, the measurement result of the glossiness of the visible surface of the product also showed that the glossiness 91 was lower than the glossiness of the product of Example 2 and that the warpage of the product was large.

【0031】[0031]

【発明の効果】上記金型によれば、汎用の樹脂に限らず
従来高光沢な製品面を得ることが難しいとされていたガ
ラス等のフィラー、ブタジエン等のゴム粒子を含む樹脂
の成形品においても外観不良のない高光沢、高品位かつ
反りのない製品が得られ、品質並びにコストの面からも
メリットが大きく、製品不良を低減する上での効果は極
めて大きい(請求項1〜11)。次に、熱媒循環流路内
に乱流発生部材を組み入れることにより、伝熱率の向上
を図ることができる(請求項8)。又、本発明は、熱媒
循環流路の裏側に断熱層を形成することにより、金型側
の熱容量を小さくすることで急加熱、急冷却を即効的に
行うことができる(請求項11)。
According to the above-mentioned mold, not only general-purpose resins but also resin moldings containing fillers such as glass and rubber particles such as butadiene, which have conventionally been considered difficult to obtain a high-gloss product surface. In addition, a high gloss, high quality, and non-warped product having no defective appearance can be obtained, the merits are great in terms of quality and cost, and the effect of reducing product defects is extremely large (claims 1 to 11). Next, by incorporating a turbulence generating member into the heat medium circulation flow path, the heat transfer rate can be improved (claim 8). Further, according to the present invention, by forming a heat insulating layer on the back side of the heat medium circulating flow path, the heat capacity on the mold side is reduced, so that rapid heating and rapid cooling can be performed immediately. .

【図面の簡単な説明】[Brief description of the drawings]

【図1】本発明に係わる金型の製法の説明図。FIG. 1 is an explanatory view of a method for manufacturing a mold according to the present invention.

【図2】本発明の実施例に係わる射出成形用金型の一例
を示す断面図。
FIG. 2 is a cross-sectional view showing an example of an injection mold according to an embodiment of the present invention.

【図3】熱媒循環流路と入れ駒の説明図。FIG. 3 is an explanatory view of a heat medium circulating flow path and an insertion piece.

【図4】A−A′線断面図。FIG. 4 is a sectional view taken along line AA ′.

【図5】金型における熱媒流入口と流出口の説明図。FIG. 5 is an explanatory view of a heat medium inlet and an outlet in a mold.

【図6】熱媒循環流路内に邪魔板を入れた実施例の説明
図。
FIG. 6 is an explanatory view of an embodiment in which a baffle plate is placed in a heat medium circulation channel.

【図7】熱媒循環流路内に突起物を形成した実施例の説
明図。
FIG. 7 is an explanatory view of an embodiment in which a protrusion is formed in a heat medium circulation channel.

【符号の説明】[Explanation of symbols]

1 温調用成形面部材 2 薄板 3 ワックス 4 熱媒循環流路条 5 被覆層 6 熱媒循環流路 7 マスター 8 電鋳槽 9 電極 11 断熱層 12 入れ駒 13 熱媒流入口 14 熱媒流出口 15 突起物 16 邪魔板 20 金型 DESCRIPTION OF SYMBOLS 1 Molding surface member for temperature control 2 Thin plate 3 Wax 4 Heat medium circulation channel 5 Coating layer 6 Heat medium circulation channel 7 Master 8 Electroforming tank 9 Electrode 11 Heat insulation layer 12 Insert 13 Heat medium inlet 14 Heat medium outlet 15 Projection 16 Baffle plate 20 Mold

Claims (11)

【特許請求の範囲】[Claims] 【請求項1】 製品の表面形状に合わせた成形面形成用
薄板の裏面に、後から溶融可能な空洞成形材料により循
環流路条を形成する、 次に、前記循環流路条の表面に被覆層を形成し、その後
前記空洞成形材料を溶し出すことにより、薄板と被覆層
間に熱媒循環流路を形成して温調用成形面部材を製作す
る、 次に、前記温調用成形面部材を金型の成形面に組み込
む、 ことを特徴とするプラスチック製品成形用金型の製法。
1. A circulating channel is formed on a back surface of a forming surface forming thin plate according to a surface shape of a product by a cavity molding material that can be melted later. Next, the surface of the circulating channel is coated. Forming a layer, and then extruding the cavity molding material to form a heat medium circulating flow path between the thin plate and the coating layer to produce a temperature control molding surface member. A method for producing a mold for molding plastic products, which is incorporated into a molding surface of the mold.
【請求項2】 空洞成形材料として、ワックスを用いる
請求項1記載のプラスチック製品成形用金型の製法。
2. The method according to claim 1, wherein wax is used as the cavity molding material.
【請求項3】 電鋳法により循環流路条の表面に金属製
の被覆層を形成する請求項1又は2記載のプラスチック
製品成形用金型の製法。
3. The method according to claim 1, wherein a metal coating layer is formed on the surface of the circulation channel by electroforming.
【請求項4】 メッキ法により循環流路条の表面に金属
の被覆層を形成する請求項1又は2記載のプラスチック
製品成形用金型の製法。
4. The method according to claim 1, wherein a metal coating layer is formed on the surface of the circulation channel by plating.
【請求項5】 製品面と同一形状を有するマスターの正
面側に接近させて製品面に対し同じ3次元形状かつ高密
度となるよう、空洞成形材料により循環流路条を形成
し、これを電鋳槽内に浸漬して薄板と被覆層を同時に一
体成形する請求項1又は2記載のプラスチック製品成形
用金型の製法。
5. A circulating flow path is formed from a cavity molding material so as to approach the front side of a master having the same shape as the product surface so as to have the same three-dimensional shape and high density with respect to the product surface. 3. The method for manufacturing a plastic product molding die according to claim 1, wherein the thin plate and the coating layer are integrally molded simultaneously by dipping in a casting tank.
【請求項6】 製品の表面形状に合わせた薄板の裏面
に、後から溶融可能な空洞成形材料により循環流路条を
形成したのち、前記循環流路条の表面に金属被覆層を形
成し、その後前記空洞成形材料を溶し出すことにより、
薄板と被覆層間に熱媒循環流路を形成した温調用成形面
部材を製作し、これをバッキング内に組み込んで入れ駒
を作り、この入れ駒を金型の成形面に組み込んで成るプ
ラスチック製品成形用金型。
6. After forming a circulation channel with a cavity molding material that can be melted later on the back surface of the thin plate according to the surface shape of the product, a metal coating layer is formed on the surface of the circulation channel. Then, by extruding the cavity molding material,
A temperature control molding surface member with a heat medium circulation channel formed between the thin plate and the coating layer is manufactured, this is incorporated into a backing to make a insert, and this insert is incorporated into the molding surface of a mold to form a plastic product. Mold.
【請求項7】 製品面に対し同じ3次元形状かつ高密度
となるように面状の熱媒循環流路を薄板の裏面に形成し
て成る請求項6記載のプラスチック製品成形用金型。
7. A plastic product molding die according to claim 6, wherein a planar heat medium circulation channel is formed on the back surface of the thin plate so as to have the same three-dimensional shape and high density with respect to the product surface.
【請求項8】 熱媒循環流路内に乱流発生部材を組み込
んで成る請求項6又は7記載のプラスチック製品成形用
金型。
8. The plastic product molding die according to claim 6, wherein a turbulence generating member is incorporated in the heat medium circulating flow path.
【請求項9】 製品の可視面側にのみ温調用成形面部材
を組み込んで成る請求項6又は7又は8記載のプラスチ
ック製品成形用金型。
9. The mold for molding a plastic product according to claim 6, wherein a molding surface member for temperature control is incorporated only on the visible surface side of the product.
【請求項10】 製品に接する成形面の一部にのみ、温
調用成形面部材を組み込んで成る請求項6又は7又は8
又は9記載のプラスチック製品成形用金型。
10. A temperature control molding surface member is incorporated only in a part of a molding surface in contact with a product.
Or a mold for molding a plastic product according to 9 above.
【請求項11】 温調形成面部材をバッキング内に組み
込む際、温調用成形面部材の裏面とバッキングの組み込
み面間に断熱層を形成して成る請求項6又は7又は8又
は9又は10記載のプラスチック製品成形用金型。
11. A heat insulating layer is formed between the back surface of the temperature control forming surface member and the backing mounting surface when the temperature control forming surface member is incorporated in the backing. Mold for plastic products molding.
JP18444196A 1996-07-15 1996-07-15 Mold for molding plastic product and manufacture of the mold Pending JPH1029215A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP18444196A JPH1029215A (en) 1996-07-15 1996-07-15 Mold for molding plastic product and manufacture of the mold

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18444196A JPH1029215A (en) 1996-07-15 1996-07-15 Mold for molding plastic product and manufacture of the mold

Publications (1)

Publication Number Publication Date
JPH1029215A true JPH1029215A (en) 1998-02-03

Family

ID=16153210

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18444196A Pending JPH1029215A (en) 1996-07-15 1996-07-15 Mold for molding plastic product and manufacture of the mold

Country Status (1)

Country Link
JP (1) JPH1029215A (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0909626A2 (en) * 1997-10-17 1999-04-21 TOHOKU MUNEKATA Co., Ltd. Method and apparatus for injection moulding plastics
JP2002210795A (en) * 2001-01-17 2002-07-30 Mitsui Chemicals Inc Mold for injection-molding synthetic resin
JP2002210781A (en) * 2001-01-17 2002-07-30 Mitsui Chemicals Inc Mold for molding synthetic resin
JP2005514224A (en) * 2001-10-26 2005-05-19 アクララ バイオサイエンシーズ, インコーポレイテッド Systems and methods for injection micro-replication of microfluidic substrates
EP1950020A1 (en) * 2005-09-21 2008-07-30 Mitsubishi Heavy Industries, Ltd. Mold, mold temperature regulation method, mold temperature regulation device, injection molding method, injection molding machine, and thermoplastic resin sheet
DE102011013193A1 (en) * 2011-03-05 2012-09-06 Nordex Energy Gmbh Apparatus for tempering components in production tool for producing blades for wind turbines, has two layers of liquid-sealed sheet that are connected in linear shape to form path for liquid medium between layers
JP2015025159A (en) * 2013-07-25 2015-02-05 三菱重工業株式会社 Method of manufacturing bored structure, and bored structure
WO2015063327A1 (en) * 2013-11-04 2015-05-07 Plastics Unbound Ltd An injection mold, injection molding tool comprising the injection mold, methods of theirs uses and objects obtained
EP2923811A1 (en) * 2014-03-28 2015-09-30 Plastics Unbound Ltd An injection mold, injection molding tool comprising the injection mold, methods of theirs uses and objects obtained.
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Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0909626A2 (en) * 1997-10-17 1999-04-21 TOHOKU MUNEKATA Co., Ltd. Method and apparatus for injection moulding plastics
EP0909626A3 (en) * 1997-10-17 2000-02-02 TOHOKU MUNEKATA Co., Ltd. Method and apparatus for injection moulding plastics
JP2002210795A (en) * 2001-01-17 2002-07-30 Mitsui Chemicals Inc Mold for injection-molding synthetic resin
JP2002210781A (en) * 2001-01-17 2002-07-30 Mitsui Chemicals Inc Mold for molding synthetic resin
JP2005514224A (en) * 2001-10-26 2005-05-19 アクララ バイオサイエンシーズ, インコーポレイテッド Systems and methods for injection micro-replication of microfluidic substrates
EP1950020A1 (en) * 2005-09-21 2008-07-30 Mitsubishi Heavy Industries, Ltd. Mold, mold temperature regulation method, mold temperature regulation device, injection molding method, injection molding machine, and thermoplastic resin sheet
EP1950020A4 (en) * 2005-09-21 2010-12-08 Mitsubishi Heavy Ind Ltd Mold, mold temperature regulation method, mold temperature regulation device, injection molding method, injection molding machine, and thermoplastic resin sheet
DE102011013193A1 (en) * 2011-03-05 2012-09-06 Nordex Energy Gmbh Apparatus for tempering components in production tool for producing blades for wind turbines, has two layers of liquid-sealed sheet that are connected in linear shape to form path for liquid medium between layers
JP2015025159A (en) * 2013-07-25 2015-02-05 三菱重工業株式会社 Method of manufacturing bored structure, and bored structure
WO2015063327A1 (en) * 2013-11-04 2015-05-07 Plastics Unbound Ltd An injection mold, injection molding tool comprising the injection mold, methods of theirs uses and objects obtained
WO2015063321A1 (en) * 2013-11-04 2015-05-07 Plastics Unbound Ltd A method for injection molding plastic parts by means of an injection molding machine
CN105848850A (en) * 2013-11-04 2016-08-10 普莱斯提克恩邦德有限公司 An injection mold, injection molding tool comprising the injection mold, methods of theirs uses and objects obtained
EA031669B1 (en) * 2013-11-04 2019-02-28 ПЛАСТИКС АНБАУНД ГмбХ Injection mold, injection molding tool comprising the injection mold, methods of theirs uses and objects obtained
US10279526B2 (en) 2013-11-04 2019-05-07 Plastics Unbound Gmbh Method for injection molding plastic parts by an injection molding machine
EA033100B1 (en) * 2013-11-04 2019-08-30 ПЛАСТИКС АНБАУНД ГмбХ Method for injection molding plastic parts by means of an injection molding machine
US10442125B2 (en) 2013-11-04 2019-10-15 Plastics Unbound Gmbh Injection mold, molding tool comprising the mold and methods of use thereof
EP2923811A1 (en) * 2014-03-28 2015-09-30 Plastics Unbound Ltd An injection mold, injection molding tool comprising the injection mold, methods of theirs uses and objects obtained.
KR20160136743A (en) * 2015-05-20 2016-11-30 김종현 Cooling method of injection mold of battery pack for vehicle

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