JPH0353917A - Multi-color molding method, in injection molding - Google Patents

Multi-color molding method, in injection molding

Info

Publication number
JPH0353917A
JPH0353917A JP18979389A JP18979389A JPH0353917A JP H0353917 A JPH0353917 A JP H0353917A JP 18979389 A JP18979389 A JP 18979389A JP 18979389 A JP18979389 A JP 18979389A JP H0353917 A JPH0353917 A JP H0353917A
Authority
JP
Japan
Prior art keywords
molding
mold
resin
primary
injection
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
Application number
JP18979389A
Other languages
Japanese (ja)
Other versions
JP2585102B2 (en
Inventor
Kazuhiko Shimoda
一彦 下田
Masahiro Takatani
昌宏 高谷
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.)
Panasonic Electric Works Co Ltd
Original Assignee
Matsushita Electric Works 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 Matsushita Electric Works Ltd filed Critical Matsushita Electric Works Ltd
Priority to JP1189793A priority Critical patent/JP2585102B2/en
Publication of JPH0353917A publication Critical patent/JPH0353917A/en
Application granted granted Critical
Publication of JP2585102B2 publication Critical patent/JP2585102B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B29C45/16Making multilayered or multicoloured articles
    • B29C45/1635Making multilayered or multicoloured articles using displaceable mould parts, e.g. retractable partition between adjacent mould cavities

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

PURPOSE:To mold a molded product comprised of molding material having at least two kinds of the quality of the materials or two colors with the same mold without turning a movable side mold, by a method wherein mold break is preformed by equivalent amount of a thickness of the secondary molding part, under this state of which resin is fed. CONSTITUTION:A sandwich molding device 10 possesses the primary and secondary molding nozzles 11, 12 and at least two kinds of resin can be fed. Then the primary and secondary cavity parts 15, 16, into which the resin is fed are provided between a stationary and movable molds 13, 14. Then at the time of molding, the primary molding is performed on the primary molding cavity parts 15 by feeding the resin through the primary molding nozzle of the sandwich molding device 10 under a mold clamping state. Then mold break is performed by equivalent amount of a thickness of the secondary molding part with a mold breaking device of a molding machine. The secondary molding is performed on the secondary molding cavity part 16 molded like this with the secondary molding nozzle 12 of the sandwich molding device 10.

Description

【発明の詳細な説明】 (産業上の利用分野) 本発明は、射出成形金型を回転することなく、2材質あ
るいは2色以上の成形材料からなる成形品を同一の金型
内において成形することを可能とした射出成形における
多色成形方法に関する。
Detailed Description of the Invention (Field of Industrial Application) The present invention is capable of molding molded products made of two materials or molding materials of two or more colors in the same mold without rotating the injection mold. This invention relates to a multicolor molding method in injection molding that makes it possible to do this.

(従来の技術) 従来から成形方法としては種々のものがあるが、多色成
形としては第4図(a). (b)に示すように、金型
回転盤式2色あるいは2材質成形装置を使用する場合が
ある。この方法では、l次成形キャビテイ部の2面の金
型を使用している。
(Prior Art) There are various molding methods in the past, but the one shown in Fig. 4(a) is one for multicolor molding. As shown in (b), there are cases where a two-color or two-material molding machine using a mold rotary disk is used. This method uses a two-sided mold for the primary molding cavity.

すなわち、図中(+)は固定側金型、(2)は可動側金
型、(3)はコア部、(4)は1次成形キャビティ部、
(5)は2次成形キャビティ部、(6)は1次成形品、
(7)は2層成形品、(8)は1次成形ノズル、(9)
は2次成形ノズルである。
That is, in the figure (+) is the fixed side mold, (2) is the movable side mold, (3) is the core part, (4) is the primary molding cavity part,
(5) is the secondary molded cavity part, (6) is the primary molded product,
(7) is a two-layer molded product, (8) is a primary molded nozzle, (9)
is a secondary molding nozzle.

しかして、動作に際しては、先ず、第4図(a)中A部
において、1次成形後、1次成形品6をコア部3に密着
させたまま型開きし、可動側金型2を180゜回転さセ
て、B部において1次成形晶6を2次或形キャビテイ部
5に型締め挿入し、2次成形し、2層成形品7を成形し
ている。
Therefore, in the operation, first, in part A in FIG. After being rotated by .degree., the primary molded crystal 6 is clamped and inserted into the secondary molded cavity part 5 at part B, and subjected to secondary molding to form a two-layer molded product 7.

(発明が解決しようとする課題) しかしながら、上記した従来の成形方法では金型が2面
必要なことから金型コストが高い、また、可動側金型を
回転さセる必要があることから成形サイクルが長いなど
の課題を有していた。
(Problems to be Solved by the Invention) However, in the conventional molding method described above, the mold cost is high because two molds are required, and the movable mold needs to be rotated, so the molding It had problems such as long cycles.

本発明は以上のことに鑑み提案されたもので、その目的
とするところは、可動側金型を回転することなく、2材
質あるいは2色以上の成形材料からなる成形品を同一の
金型で成形することができ、高品質で安価で、かつ速や
かに成形品を得ることができる射出成形における多色成
形方法を提供するにある。
The present invention was proposed in view of the above, and its purpose is to produce molded products made of two materials or molding materials of two or more colors in the same mold without rotating the movable mold. It is an object of the present invention to provide a multicolor molding method for injection molding, which can be molded and quickly obtain a high-quality, inexpensive molded product.

3 (課題を解決ずるための手段) 本発明では、共通ノズルを通して射出成形金型に少なく
とも2種類の樹脂を順次供給できる成形装置を用いてな
る成形方法において、 2次成形部の肉厚相当分だけ型開きし、この状態で樹脂
を供給するようにし、上記目的を達威している。
3 (Means for solving the problem) In the present invention, in a molding method using a molding device that can sequentially supply at least two types of resin to an injection mold through a common nozzle, The mold is opened only once, and the resin is supplied in this state, thereby achieving the above purpose.

また、2次成形に際して型開きと連動するスライドコア
を用いて2次成形部の肉厚を部分的に大きくさせて樹脂
を供給するよう6こして上記目的を達威している。
Furthermore, during secondary molding, the above objective is achieved by partially increasing the wall thickness of the secondary molding part using a slide core that operates in conjunction with the opening of the mold to supply resin.

さらに、エジェクターロソトを介し移動自在な移動コア
を2次成形時に2次成形部の肉厚相当分だけ移動させ、
この状態で樹脂を供給するようにし、上記目的を達威す
るようにしている。
Furthermore, the movable core is moved by an amount equivalent to the wall thickness of the secondary molding part during secondary molding via an ejector rotor,
The resin is supplied in this state to achieve the above purpose.

(作用) 本発明では上記のように構威し、成形機の型開き装置を
使って2次成形キ千ビテイ部を形威し、少なくとも2種
類の樹脂を順次供給できる或形装置を用いて2層もしく
は2色以上の成形材料から4 なる成形品を同一の金型で或形できるよう6こし、1面
の金型で、かつ可動側金型を回転させることなく2材質
あるいは2色以上の成形材料からなる成形品が得られる
ようになっている。
(Function) The present invention is constructed as described above, and uses a mold opening device of a molding machine to shape the secondary molding space, and a molding device that can sequentially supply at least two types of resin. In order to be able to form a molded product made of two layers or two or more colors of molding materials using the same mold, it is possible to form a molded product made of two layers or two or more colors of molding materials using one mold, and without rotating the movable mold. It is now possible to obtain molded products made of molding materials.

また、型開きと連動するスライドコアを使って部分的に
肉厚の異なる2次成形キャビテイ部を形威し、この部分
に、少なくとも2種類の樹脂を順次供給できる成形装置
を用いて2層もしくは2色以上の成形材料からなる成形
品を同一の金型で成形できるようにしている。
In addition, a slide core that works with the opening of the mold is used to form a secondary molding cavity with partially different wall thicknesses, and a molding device that can sequentially supply at least two types of resin is used to form a two-layer or Molded products made of molding materials of two or more colors can be molded using the same mold.

(実施例1) 第1図(a), (b)は本発明の第1実施例を示すも
ので、図中10はサンドイッチ成形装置で、このサンド
イッチ成形装i110は1次成形ノズル11と2次成形
ノズル12とを有し、かつそれらが中央部にまとめられ
、少なくとも2種類の樹脂を供給できるようになってお
り、下方の共通のノズルを介し樹脂が供給される固定側
金型13が配設されている。また、l4は固定側金型1
3と対応する可動側金型であり、それらの間に樹脂が供
給される1次、2次成形キャビテイ部l5、16が設け
られる。
(Embodiment 1) FIGS. 1(a) and 1(b) show a first embodiment of the present invention, in which 10 is a sandwich molding device, and this sandwich molding device i110 has primary molding nozzles 11 and 2. The molding nozzle 12 has a second molding nozzle 12, and these are gathered in the center so that at least two types of resin can be supplied. It is arranged. In addition, l4 is the fixed side mold 1
This is a movable mold corresponding to 3, and primary and secondary molding cavities l5 and 16 are provided between them to which resin is supplied.

しかして、成形に際しては、まず、(a)図において、
型締めした状態でサンドイッチ成形装置10のl次成形
用ノズルl1から樹脂を供給し1次成形キャビテイ部l
5に1次成形を行う、次に、(b)図に示すように、成
形機の型開き装置で2次成形部の肉厚相当分だけ型開き
を行う。このようにして形威された2次成形キャビテイ
部l6に、サンドインチ成形装置10の2次成形用ノズ
ルl2より2次成形を行う。
Therefore, when molding, first, in figure (a),
With the mold clamped, resin is supplied from the primary molding nozzle l1 of the sandwich molding device 10 to form the primary molding cavity part l.
5, primary molding is performed. Next, as shown in FIG. 5(b), the mold is opened by the mold opening device of the molding machine by an amount corresponding to the wall thickness of the secondary molded part. The thus shaped secondary molding cavity portion l6 is subjected to secondary molding from the secondary molding nozzle l2 of the sandwich molding device 10.

このように、この実施例では、サンドイッチ或形装置l
Oを用い、かつ成形機自体の型開き装置を使って2次成
形キャビテイ部16を形威し、2層もしくは2色以上の
成形材料からなる成形品を、同の金型内において成形可
能としている。
Thus, in this embodiment, the sandwich forming device l
O and the mold opening device of the molding machine itself to shape the secondary molding cavity part 16, so that molded products made of two layers or molding materials of two or more colors can be molded in the same mold. There is.

このため、金型が1面で済むので、金型のコストダウン
になる。また、可動側金型14の回転が不要になるので
、成形サイクルが短縮できる。さらCこ、2次成形キャ
ビテイ部l6の形威に成形機の型開き装置を使用してい
るので、キャビテイ形威用の特別な装置が不要になる、
などの優れた効果を有している。
Therefore, only one surface of the mold is required, which reduces the cost of the mold. Further, since the movable mold 14 does not need to be rotated, the molding cycle can be shortened. Moreover, since the mold opening device of the molding machine is used to shape the secondary molding cavity part l6, there is no need for a special device to shape the cavity.
It has excellent effects such as

(実施例2) 第2図(a). (b)は本発明の第2実施例を示すも
ので、この実施例では成形機の型開き装置および型開き
と連動ずるスライドコア23を使って2次成形部の肉厚
が部分的に異なる2層もしくは2色以上の成形材料から
なる成形品を同一の金型によって得られるようにしたこ
とに特徴を有している。
(Example 2) Figure 2 (a). (b) shows a second embodiment of the present invention, in which the wall thickness of the secondary molded part is partially different by using a mold opening device of a molding machine and a slide core 23 that slides in conjunction with the mold opening. A feature of this method is that molded products made of two layers or two or more colors of molding materials can be obtained using the same mold.

すなわち、金型装置自体は、可動側金型24にかけて、
その両側にそれぞれ斜め上方に延びるフィンガーピン2
5が設けられ、かつ固定側金型26側であって各フィン
ガーピン25の回りにスライドコア23がそれぞれ設け
られた構威となっている。
That is, the mold device itself is connected to the movable mold 24,
Finger pins 2 extending diagonally upward on each side
5 is provided, and slide cores 23 are provided around each finger pin 25 on the fixed side mold 26 side.

そして、成形にあったでは、(a)図に示されるように
、型締めした状態でサンドイッチ成形装置20の1次成
形用ノズル21から1次成形キャビテイ部27に共通ノ
ズルを介し成形材料を供給し1次成形を行う。次に、(
ロ)図に示すように、成形機の型開き装置で2次成形部
28の肉厚相当分だけ型開きを−7 行う。この場合、同時に型開きと連動するスライドコア
23の作動により部分的に肉厚の大きい2次成形キャビ
テイ部29が形威される。このような2次成形キャビテ
イ部29に、サンドインチ成形装置20の2次成形用ノ
ズル22より異なる成形材料を共通ノズル を介し供給
し2次成形を行う。
In the molding process, as shown in FIG. Then perform primary forming. next,(
b) As shown in the figure, the mold is opened by an amount equivalent to the wall thickness of the secondary molded part 28 using the mold opening device of the molding machine. In this case, at the same time, the slide core 23 is operated in conjunction with the opening of the mold, thereby partially forming a secondary molding cavity portion 29 with a large wall thickness. A different molding material is supplied from the secondary molding nozzle 22 of the sand inch molding device 20 to the secondary molding cavity portion 29 through a common nozzle to perform secondary molding.

上述のように、この実施例では、成形機の型開き装置お
よび型開きと連動するスライドコア23を使って部分的
に肉厚の異なる2次或形キャビテイ部29を形威し、サ
ンドイッチ成形装置20を用いて2次成形部の肉厚が部
分的に異なる2層もしくは2色以上の成形材料からなる
成形品を、同一の金型内において成形可能としている。
As described above, in this embodiment, the mold opening device of the molding machine and the slide core 23 interlocked with the mold opening are used to form the secondary shaped cavity portion 29 having partially different wall thicknesses, and the sandwich molding machine 20, it is possible to mold a molded product made of two layers or molding materials of two or more colors with partially different wall thicknesses in the secondary molding part in the same mold.

(実施例3) 第3図(a). (b)は本発明の第3実施例を示すも
ので、この例における金型装置は、固定側金型40と対
応して設けられた可動側金型33に移動コア部34が設
けられ、かつ移動コア部34の下方両側にそれぞれフラ
ンジ34aが設けられ、このフランジ34a上面と可動
側金型33に形威された空間部にスプリ8 ング35が設けられ、また、移動コア部34の底部には
基台36側から上下に移動自在なエジエクタロッド37
が設けられた構威となっている。
(Example 3) Figure 3(a). (b) shows a third embodiment of the present invention, and the mold device in this example includes a movable mold 33 provided in correspondence with a fixed mold 40, and a movable core portion 34. Further, flanges 34a are provided on both sides of the lower part of the moving core part 34, and springs 35 are provided in the space defined by the upper surface of the flanges 34a and the movable mold 33. There is an ejector rod 37 that can be moved up and down from the base 36 side.
The structure has been set up.

成形にあたっては、まず、fal図において、エジェク
ターロソド37を突出した状態でサンドインチ成形装置
30の1次成形用ノズル31からl次或形キャビテイ部
38に1次成形を行う。次に、(b)図に示すように、
エジエクターロッド37を引くと、スプリングl4によ
り移動コア部34が2次成形部の肉厚相当分だけ移動す
る。このようにして形威された2次或形キャビテイ部3
9に、サンドイッチ成形装置30の2次成形用ノズル3
9より樹脂を供給して2次成形を行う。
In the molding, first, as shown in the fal diagram, primary molding is performed from the primary molding nozzle 31 of the sandwich molding device 30 into the l-dimensional cavity portion 38 with the ejector rod 37 protruding. Next, as shown in figure (b),
When the ejector rod 37 is pulled, the moving core portion 34 is moved by the spring l4 by an amount corresponding to the wall thickness of the secondary molded portion. The secondary shaped cavity part 3 formed in this way
9, the secondary molding nozzle 3 of the sandwich molding device 30
9, the resin is supplied and secondary molding is performed.

このように、この実施例では、可動側金型33に、エジ
ェククーロンド37の作用で移動可能となるコア部を設
け、サンドイッチ成形装置30を使用して2層もしくは
2色以上の成形材料からなる成形品を、同一の金型内に
おいて成形可能としたことを特徴としている。
As described above, in this embodiment, the movable side mold 33 is provided with a core portion that is movable by the action of the ejector coulomb 37, and the sandwich molding device 30 is used to form molding materials of two layers or two or more colors. It is characterized by being able to mold two molded products in the same mold.

(発明の効果) 本発明は以上のように、要するに、少なくとも2種類の
樹脂を順次供給できる成形装置を用い、2次成形部の肉
厚相当分だけ型開きしたり、あるいは2次成形に際して
型開きと連動するスライドコアを用いて2次成形部の肉
厚を部分的に大きくさせたり、あるいはエジェクターロ
ッドを介して移動自在な移動コアを2次成形時に2次成
形部の肉厚相当分だけ移動させ、2次成形用の樹脂を供
給するようにしたから、一面の金型でもって容易に多色
或形でき、金型のコストダウンを図ることができる。
(Effects of the Invention) As described above, the present invention uses a molding device that can sequentially supply at least two types of resin, and opens the mold by an amount corresponding to the wall thickness of the secondary molding part, or when performing the secondary molding. The wall thickness of the secondary molded part can be partially increased using a sliding core that moves in conjunction with the opening, or a moving core that can be moved freely via an ejector rod can be used to increase the wall thickness of the secondary molded part during secondary molding. Since the mold is moved and the resin for secondary molding is supplied, it is possible to easily form multiple colors using a single mold, thereby reducing the cost of the mold.

また、可動側金型の回転が不要になるため、成形サイク
ルが短縮できる効果がある。
Furthermore, since rotation of the movable mold is no longer necessary, the molding cycle can be shortened.

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

第l図(al, (b)は本発明の第1実施例を示すも
ので、(a)は1次成形時の金型の断面図、(b)は2
次成形時の断面図、第2図(a). (b)は本発明の
第2実施例、第3図(a). (b)は本発明の第3実
施例、第4図(a)は従来の金型回転盤式2色成形装置
を使って1次成形後型開きした状態の断面図、(I))
図は同様の装置で、2次成形時の断面図である。 10  20. 30・・・サンドイソチ成形装置11
. 21. 31・・・1次成形ノズル12, 22.
 32・・・2次成形ノズル15, 27. 38  
・・1次成形キャビテイ部16, 29,’ 39・・
・2次成形キャビテイ部23・ ・・スライドコア 34・・・移動コア部 37・・・エジェクターロッド I 1 qノ σ)  \了 (’J(’JCXJ
Figures 1 (al) and (b) show the first embodiment of the present invention, (a) is a sectional view of the mold during primary molding, and (b) is a sectional view of the mold during primary molding.
Cross-sectional view during subsequent molding, Figure 2(a). (b) is a second embodiment of the present invention, and FIG. 3(a). (b) is a third embodiment of the present invention; FIG. 4(a) is a cross-sectional view of the mold opened after primary molding using a conventional two-color mold rotary molding device; (I))
The figure is a sectional view of a similar device during secondary molding. 10 20. 30...Sandwich molding device 11
.. 21. 31... Primary forming nozzle 12, 22.
32...Secondary forming nozzle 15, 27. 38
...Primary molding cavity part 16, 29,' 39...
・Secondary molding cavity part 23...Slide core 34...Moving core part 37...Ejector rod I 1 qノ σ)

Claims (3)

【特許請求の範囲】[Claims] (1)共通ノズルを通して射出成形金型に少なくとも2
種類の樹脂を順次供給できる成形装置を用いてなる成形
方法において、 2次成形部の肉厚相当分だけ型開きし、この状態で樹脂
を供給することを特徴とした射出成形による多色成形法
(1) At least two injection molds into the injection mold through a common nozzle.
A multicolor molding method using injection molding, which uses a molding device that can sequentially supply different types of resin, and which is characterized by opening the mold by an amount corresponding to the wall thickness of the secondary molding part, and supplying the resin in this state. .
(2)共通ノズルを通して射出成形金型に少なくとも2
種類の樹脂を順次供給できる成形装置を用いてなる成形
方法において、 2次成形に際して型開きと連動するスライドコアを用い
て2次成形部の肉厚を部分的に大きくさせて樹脂を供給
することを特徴とした射出成形による多色成形法。
(2) at least two injection molds through a common nozzle;
In a molding method using a molding device that can sequentially supply different types of resin, the resin is supplied by partially increasing the wall thickness of the secondary molded part using a slide core that is linked to the opening of the mold during secondary molding. A multi-color molding method using injection molding.
(3)共通ノズルを通して射出成形金型に少なくとも2
種類の樹脂を順次供給できる成形装置を用いてなる成形
方法において、 エジェクターロッドを介し移動自在な移動コア部を2次
成形時に2次成形部の肉厚相当分だけ移動させ、 この状態で樹脂を供給することを特徴とした射出成形に
よる多色成形法。
(3) at least two injection molds through a common nozzle;
In a molding method using a molding device that can sequentially supply different types of resin, a movable core part that is movable via an ejector rod is moved during secondary molding by an amount equivalent to the wall thickness of the secondary molded part, and in this state, the resin is Multicolor molding method by injection molding characterized by supply.
JP1189793A 1989-07-21 1989-07-21 Multicolor molding method in injection molding Expired - Lifetime JP2585102B2 (en)

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JP1189793A JP2585102B2 (en) 1989-07-21 1989-07-21 Multicolor molding method in injection molding

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JP2585102B2 JP2585102B2 (en) 1997-02-26

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7731883B2 (en) * 2006-06-05 2010-06-08 Nike, Inc. Method for making a tread assembly
CN103331880A (en) * 2013-06-17 2013-10-02 广东联塑科技实业有限公司 U-shaped pipe ejection mold structure
KR200470933Y1 (en) * 2012-03-20 2014-01-27 박제현 Injection mold of a thick stand base

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5657632A (en) * 1979-10-04 1981-05-20 Toppan Printing Co Ltd Multilayer vessel
JPS61242818A (en) * 1985-04-20 1986-10-29 Nissei Plastics Ind Co Multi-color molding method

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5657632A (en) * 1979-10-04 1981-05-20 Toppan Printing Co Ltd Multilayer vessel
JPS61242818A (en) * 1985-04-20 1986-10-29 Nissei Plastics Ind Co Multi-color molding method

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7731883B2 (en) * 2006-06-05 2010-06-08 Nike, Inc. Method for making a tread assembly
KR200470933Y1 (en) * 2012-03-20 2014-01-27 박제현 Injection mold of a thick stand base
CN103331880A (en) * 2013-06-17 2013-10-02 广东联塑科技实业有限公司 U-shaped pipe ejection mold structure

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Publication number Publication date
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