JPS6251410A - Molding of multi-color article and mold thereof - Google Patents

Molding of multi-color article and mold thereof

Info

Publication number
JPS6251410A
JPS6251410A JP19259985A JP19259985A JPS6251410A JP S6251410 A JPS6251410 A JP S6251410A JP 19259985 A JP19259985 A JP 19259985A JP 19259985 A JP19259985 A JP 19259985A JP S6251410 A JPS6251410 A JP S6251410A
Authority
JP
Japan
Prior art keywords
molding
mold
resin
movable
molded
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
JP19259985A
Other languages
Japanese (ja)
Other versions
JPH0344886B2 (en
Inventor
Yasumitsu Iwata
岩田　康光
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.)
Brother Industries Ltd
Original Assignee
Brother Industries 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 Brother Industries Ltd filed Critical Brother Industries Ltd
Priority to JP19259985A priority Critical patent/JPS6251410A/en
Publication of JPS6251410A publication Critical patent/JPS6251410A/en
Publication of JPH0344886B2 publication Critical patent/JPH0344886B2/ja
Granted legal-status Critical Current

Links

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
    • B29C45/16—Making multilayered or multicoloured articles

Landscapes

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

Abstract

PURPOSE:To simplify the molding of a multi-color article by a method wherein a grooved gap to connect close molding parts with each other is formed so as to pour resin with different colors through the grooved gap in the respective close molding parts when the molding of resin part surrounding the close molding part is intended. CONSTITUTION:Firstly, a stationary mold 9 and a movable mold 8, by both of which a molding part 3 containing character parts 2 and 2' is molded, are opposite to each other so as to be contacted with each other under pressure. At this time, the tip part of a flat plate 13 abuts against the respective protruded parts 14 and 14' for constituting a plurality of enclosed molding parts 5 and 5' of the stationary mold 9. Under the above-mentioned state, resin for molding character is poured through a resin leading-in passage 15 and a gate 16 in order to mold the molding part 3 containing the character parts 2 and 2'. Secondly, the flat plate 13 is retreated so as to develop a grooved gap 17 and at the same time the movable mold 8 is transferred from the stationary mold 9 to a stationary mold 10 without releasing the molding part 3 from the movable mold 8 so as to oppose the mold 9 to the mold 10 in order to be brought into contact with each other under pressure and, after that, to pour resin for molding part with color different from that of the molding part 3 through a resin leading-in passage 18 and a gate 19 in order to mold a molding part 4 integrally with the molding part 3. Thus, a multi-color article with a large number of enclosed molding parts can be easily molded.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、タイプライタキー等の多色樹脂物品の成形方
法及びその成形用金型に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for molding multicolored resin articles such as typewriter keys, and a mold for the molding.

〔従来の技術〕[Conventional technology]

多色樹脂物品たとえばタイプライタキー又はその類似物
品では、第１２図及び第１３図に示すように、タイプラ
イタキー１の文字を形成する文字部分２．２′を有する
第１成形部３と、地を形成する第２成形部４とはそれぞ
れ色の異なる樹脂で構成され一体に成形されろ、このた
め、共通の可動型とｔｊＳ１成形部用の固定型とで第１
成形部３のみを成形し、次いで、可動型から成形された
第１成形部３を取り外すことなく固定型を交換し、色の
異なる樹脂を注入して第２成形ｎ４を第１成形部３と一
体に成形する成形方法が用いられる。この時、形成する
文字によっては文字部分２．２′により周囲を囲まれた
閉鎖成形部分５．５′が存在することがある。この、島
部分とも称される閉鎖成形部分５．５′には、特別の樹
脂通路を設けてやらないと第２成形部用の樹脂を充填す
ることができない。In a multicolored resin article, such as a typewriter key or similar article, as shown in FIGS. 12 and 13, a first molded part 3 having a character portion 2.2' forming the characters of the typewriter key 1; The second molding part 4 that forms the base is made of resin of a different color and is molded integrally. Therefore, the common movable mold and the fixed mold for the tjS1 molding part
Only the molded part 3 is molded, then the fixed mold is replaced without removing the first molded part 3 molded from the movable mold, and a resin of a different color is injected to form the second molded part n4 with the first molded part 3. A molding method of integrally molding is used. At this time, depending on the character to be formed, there may be a closed molded part 5.5' surrounded by the character part 2.2'. This closed molded part 5.5', also called island part, cannot be filled with the resin for the second molded part unless special resin channels are provided.

そこで、従来の方法においては、第１成形部３の成形時
にｒ！ＩＭＩ成形部分５．５′を取り囲む文字部分２．
２′の直下に可動型からピンを挿入して、第１４図に示
す如く、文字部分２．２′の裏側にピンによる小孔６．
６′が明けられた第１成形部３を成形し、この小孔６．
６′を閉鎖成形部分５．５′と開放された部分７とを連
通する樹脂通路として用いていた。Therefore, in the conventional method, when molding the first molded part 3, r! Character portion 2 surrounding IMI molded portion 5.5'.
A pin is inserted from the movable mold directly under the character part 2.2', and a small hole 6.
6' is formed in the first molded part 3, and the small hole 6.
6' was used as a resin passage communicating the closed molded part 5.5' and the open part 7.

しかし、この方法では各々の閉鎖成形部分５．５′毎に
ピンを設は小孔６．６′を明けなければならないので、
閉鎖成形部分５．５′が多数個存在するようなタイプラ
イタキーでは多数個のピンが必要であり、可動型の構造
が複雑になり、加工や組立が大変面倒であるという問題
点があった。However, in this method, it is necessary to set a pin and drill a small hole 6.6' for each closing molded part 5.5'.
A typewriter key with a large number of closed molded parts 5.5' requires a large number of pins, which complicates the structure of the movable type and makes processing and assembly very troublesome. .

また、同じ形状で単に文字のスペリングが異なるだけの
タイプライタキーを成形する際にも、文字によりピンの
位置が異なるため可動型をそれぞれ交換しなければなら
ないという問題点があった。Furthermore, when molding typewriter keys that have the same shape but simply have different spellings of characters, there is a problem in that the movable molds must be replaced because the pin positions differ depending on the character.

〔発明が解決しようとする問題点〕[Problem that the invention seeks to solve]

本発明は、上記の問題点を解決するためなされたもので
あり、閉鎖成形部分を多数個有する多色樹脂物品を容易
に成形でさ、単に閉鎖成形部分の位置が若干具なるだけ
の多色樹脂物品であれば可動型を交換することな（成形
することができる成形方法および成形金型を提供するこ
とを目的とする。The present invention was made in order to solve the above problems, and it is possible to easily mold a multicolored resin article having a large number of closed molded parts, and to easily mold a multicolored resin article having a plurality of closed molded parts. The object of the present invention is to provide a molding method and a molding die that can mold resin articles without replacing the movable mold.

〔問題点を解決するための手段〕[Means for solving problems]

このため本発明では、成形部を有する可動型と、その可
動型の成形部と相対して樹脂の色に対応したそれぞれの
成形部用空間を形成する複数の固定型とを用いて、周囲
を色の異なる樹脂で囲まれた閉鎖成形部分を複数個有す
る多色樹脂物品を一体に成形する多色物品の成形方法に
おいて、前記閉鎖成形部分を取囲む樹脂部分を含むｆｊ
％１成形部を成形する際に、前記複数の閉鎖成形１分を
連結するように連続した溝状の空隙を形成し、次いで、
前記複数のｒＩｉ鎖成形成形部分む第２成形部を前記第
１成形部と色の異なる樹脂により成形する際に、前記溝
状の空隙を介して各々のｆｆ！鎖成形成形部脂を注入し
て成形することを特徴とする多色物品の成形方法が提供
される。Therefore, in the present invention, a movable mold having a molding part and a plurality of fixed molds facing the molding part of the movable mold and forming spaces for respective molding parts corresponding to the color of the resin are used to mold the surrounding area. In a method for molding a multicolor article, in which a multicolor resin article having a plurality of closed molded parts surrounded by resins of different colors is integrally molded, fj including a resin part surrounding the closed molded part
When molding the %1 molded part, a continuous groove-shaped void is formed so as to connect the plurality of closed molded parts, and then,
When molding the second molding part containing the plurality of rIi chain molding parts with a resin of a different color from the first molding part, each ff! A method for molding a multicolored article is provided, which comprises molding by injecting a chain-forming molding resin.

さらに本発明では、上記の方法を実施するに好適な金型
として、周囲を色の異なる樹脂で囲まれたｒＷ鎖成形部
分を複数個有する多色樹脂物品を、成形部を有する可動
型と、その可動型の成形部と相対して樹脂の色に対応し
たそれぞれの成形部用空間を形成する複数の固定型とを
用いて、一体に成形する多色成形用金型において、前記
可動型には、前記複数の閉鎖成形部分に対応する箇所を
連絡する溝が設けられ、その溝には、可動小片が摺動可
能に底枠され、その可動小片は、成形部用空間に突出し
て相対する固定型に当接する位置から可動型の成形部表
面付近に後退した位置まで往復移動が可能とされている
ことを特徴とする９色成形用金型が提供される。Further, in the present invention, as a mold suitable for carrying out the above method, a multicolored resin article having a plurality of rW chain molding parts surrounded by resins of different colors, a movable mold having a molding part, In a multi-color molding mold that integrally molds a molding part of the movable mold and a plurality of fixed molds facing each other and forming spaces for respective molding parts corresponding to the color of the resin, the movable mold is is provided with a groove connecting locations corresponding to the plurality of closed molding parts, a movable small piece is slidably attached to the bottom frame in the groove, and the movable small piece protrudes into and faces the molding part space. A nine-color mold is provided, which is capable of reciprocating from a position in contact with a fixed mold to a position recessed near the surface of a molding part of a movable mold.

〔実施例〕〔Example〕

本発明の実施例について図面に従って具体的に説明する
。Embodiments of the present invention will be specifically described with reference to the drawings.

ｍ１図及び第２図はタイプライタキーを製造する金型の
断面図、第３図は可動型の平面図、第４図及び第５図は
それぞれ第１及び第２の固定型の平面図、第６図は＃Ｓ
１成形部の絣視図である。Figure m1 and Figure 2 are cross-sectional views of the mold for manufacturing typewriter keys, Figure 3 is a plan view of the movable mold, Figures 4 and 5 are plan views of the first and second fixed molds, respectively. Figure 6 is #S
It is a Kasuri perspective view of 1 molding part.

この実施例では、ラムにより抑圧移動される可動型８と
２つの固定型９．１０を用いて、ｆｆ１１２図に示す如
き文字部分２．２″により囲まれた複数の閉鎖成形部分
５．５′を有するタイプライタキー１を成形する。可動
型８の成形部１１には、閉鎖成形部分５．５′に対応す
る箇所に可動型８を貫通する溝１２が設けられ、その溝
１２に平板１３が摺動可能に嵌挿されている。Ｖ板１３
は図示しないスプリングにより可動型８がら突出する方
向に付勢されており、自由状態ではその先端部が可動型
８の成形部１１表面から突出した位置を占める。また、
図示しない機構により、平板１３をスプリング圧に抗し
て後退させ、その先端部が成形部１１の表面付近に位置
するよう固定することが可能である。平板１３は複数の
閉鎖成形部分５．５′を連結する溝状の空隙を形成する
ための可動小片を構成する。In this embodiment, a movable mold 8 and two fixed molds 9.10, which are compressed and moved by a ram, are used to form a plurality of closed molding parts 5.5' surrounded by character parts 2.2" as shown in FIG. ff112. The molding part 11 of the movable mold 8 is provided with a groove 12 passing through the movable mold 8 at a location corresponding to the closing molded part 5.5', and a flat plate 13 is formed in the groove 12. is slidably inserted.V plate 13
is urged by a spring (not shown) in the direction of protruding from the movable mold 8, and in a free state, its tip occupies a position protruding from the surface of the molding part 11 of the movable mold 8. Also,
A mechanism not shown allows the flat plate 13 to be moved backward against the spring pressure and fixed so that its tip is positioned near the surface of the molded part 11. The plate 13 constitutes a movable piece for forming a groove-like cavity connecting a plurality of closed molding parts 5.5'.

まず、第１図に示すように、文字部分２．２′を含む第
１成形部３を成形する第１の固定型９と可動型８とを相
対し圧接する。この時、平板１３は自由状態にする。平
板１３は図示しないスプリングによって第１成形部用空
間に突出し、その先端部が第１の固定型９の複数の閉鎖
成形部分５．５′構成用の各々の突起部１４．１４′に
当接する。この状態で、文字部分成形用０１脂（たとえ
ば黒色）を樹脂導入路１５及びデート１６を経て第１成
形部用空間に注入し、文字部分２．２″を含む第１成形
部３を成形する。ここで、ｍｉ成形部用空間に突出した
平板１３により占められていた箇所には黒色の樹脂が充
填されないため、成形された第１成形部３には、第６図
に示すように、複数個の閉鎖成形部分５．５′を連絡す
る溝状の空１ＦｉＸ１７が文字部分２．２′の裏側に形
成される。First, as shown in FIG. 1, a first stationary mold 9 and a movable mold 8 for molding the first molded part 3 including the character portions 2.2' are pressed against each other. At this time, the flat plate 13 is left in a free state. The flat plate 13 projects into the space for the first molding part by a spring (not shown), and its tip abuts on each of the protrusions 14.14' for forming the plurality of closed molding parts 5.5' of the first stationary mold 9. . In this state, 01 resin (for example, black) for character part molding is injected into the space for the first molding part through the resin introduction path 15 and the date 16, and the first molding part 3 including the character part 2.2'' is molded. .Here, since the part occupied by the flat plate 13 protruding into the space for the mi molding part is not filled with black resin, the molded first molding part 3 has a plurality of molded parts as shown in FIG. A groove-like cavity 1FiX17 connecting the closed molding parts 5.5' is formed on the back side of the character part 2.2'.

次に、ｆｉ２図に示すように、平板１３を後退させ溝状
の空隙１７が現われるようにすると共に、１１成形部３
を可動型８がら取外すことなく、その可動型８を第１の
固定型９がら第２の固定型１０に移動し、第２の固定型
１ｏと可動型８とを相対し圧接する。そして、ｐｌＳ１
成形部３とは色の異なる第２成形部用樹脂（たとえば白
色）を樹脂導入路１８及びデート１９を経て第２成形部
用空間に注入し、白色の地をなす第２成形部４を黒色の
文字をなすｍｉ成形部３と一体に成形する。ここで、平
板１３が可動型８の成形部１１表面付近まで後退してい
るため、文字部分２．２′の裏側に形成された溝状の空
隙１７が、複数個の閉鎖成形部分５．５′と開放された
部分７とを連通する連続した樹脂通路となる。それ故、
文字部分２．２′に囲まれた複数個の閉鎖成形部分５．
５′に確実に白色の樹脂を充填することができる。Next, as shown in FIG.
Without removing the movable mold 8 from the movable mold 8, the movable mold 8 is moved from the first fixed mold 9 to the second fixed mold 10, and the second fixed mold 1o and the movable mold 8 are brought into pressure contact with each other by facing each other. And plS1
A resin for the second molding part having a different color from that of the molding part 3 (for example, white) is injected into the space for the second molding part through the resin introduction path 18 and the date 19, and the second molding part 4, which has a white background, is colored black. It is molded integrally with the mi molding part 3 which forms the letters . Here, since the flat plate 13 has retreated to the vicinity of the surface of the molding part 11 of the movable mold 8, the groove-shaped void 17 formed on the back side of the character part 2.2' has a plurality of closed molding parts 5.5. ' and the open portion 7 form a continuous resin passage. Therefore,
A plurality of closed molded parts surrounded by character parts 2.2' 5.
5' can be reliably filled with white resin.

以上述べた実施例では作動を簡明に説明するため、閉鎖
成形部分を２つしが有さないタイプライタキー１を例に
説明した。しかし、本発明の効果がより顕者に現われる
のは閉鎖成形部分を多数個有する多色樹脂物品を成形す
る場合である。In the embodiments described above, in order to explain the operation simply, the typewriter key 1 which does not have two closing molded parts has been described as an example. However, the effects of the present invention become more apparent when a multicolored resin article having a large number of closed molded parts is molded.

たとえば、第７図又は第８図に示す第１の固定型２１．
２２を用いて成形されるタイプライタキーは、多くの文
字を有し多数の閉鎖成形部分を有している。しかし、本
発明によれば第９図に示すように、これらの固定型２１
．２２に相対しで用いられる可動型２３には、ただ一つ
の平板１３を設けるのみで全てのＩ％ＨＪＩｔ形部分に
樹脂を充填することができる。さらに、第７図に示す固
定型２１と第８図に示す固定型２２とでは、文字のスペ
リングが異なり閉鎖成形部分の位置及び個数が異なるに
もかかわらず、同一の可動型２３を用いることができる
。For example, the first fixed mold 21 shown in FIG. 7 or 8.
Typewriter keys molded using 22 have many characters and many closed molded parts. However, according to the present invention, as shown in FIG.
．． By providing only one flat plate 13 in the movable mold 23 used opposite to the mold 22, all the I%HJIt-shaped parts can be filled with resin. Furthermore, the same movable mold 23 can be used for the fixed mold 21 shown in FIG. 7 and the fixed mold 22 shown in FIG. can.

これに討り従来の方法では、’＃７図に示す固定型２１
には第１０図に示す可動型２４を、＃！１８図に示す固
定型２２には＠１１図に示す可動型２５をと、それぞれ
の閉鎖成形部分に対応した箇所に多数のピン２６を有す
るそれぞ紅の固定型に専用の異なった可動型を用いねば
ならなかった。To overcome this, the conventional method uses a fixed type 21 shown in Figure #7.
The movable mold 24 shown in FIG. 10 is attached to #! The fixed mold 22 shown in Fig. 18 has a movable mold 25 shown in Fig. 11, and a different movable mold dedicated to the red fixed mold has a large number of pins 26 at locations corresponding to the respective closed molding parts. I had to use it.

〔発明の効果〕〔Effect of the invention〕

以上説明したように本発明方法によれば、第１成形部を
成形する際に複数の閉鎖成形部分を連結する連続した溝
状の空隙が形成されるから、閉鎖成形部分を多数個有す
る多色物品を容昌に成形することがでさるという効果が
ある。また、本発明の金型によれば、−個の可動小片で
複数個の閉鎖成形部分への樹脂通路となる溝状の空隙が
形成されるから、多数個の閉鎖成形部分を有する多色物
品であっても一個若しくは少数個の可動小片で全ての閉
鎖成形部分への樹脂通路を形成することができ、金型の
構造を簡単にすることができると共に、単に閉鎖成形部
分の位置及び個数が若干異なるだけの多色物品であれば
、同一の可動型を用いて成形することができるという優
れた効果がある。As explained above, according to the method of the present invention, a continuous groove-like void connecting a plurality of closed molded parts is formed when molding the first molded part. This has the effect of allowing the article to be shaped into a shape. Furthermore, according to the mold of the present invention, a groove-like void that becomes a resin passage to a plurality of closed molded parts is formed by the - pieces of movable pieces, so a multicolored article having a large number of closed molded parts is formed. However, it is possible to form resin passages to all closed molded parts with one or a few movable pieces, simplifying the structure of the mold, and simply changing the position and number of closed molded parts. An excellent effect is that multi-colored articles that differ only slightly can be molded using the same movable mold.

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

第１図乃至第６図は第１の実施例を示し、！＠１図及び
第２図は金型の断面図、第３図は可動型の平面図、第４
図は第１の固定型の平面図、第５図はｔｊＳ２の固定型
の平面図、第６図は第１成形部の斜視図であり、第７図
乃至第９図は第２の実施例を示し、第７図及び第８図は
第１の固定型の平面図、第９図は可動型の平面図であり
、第１０図及び第１１図は従来の可動型の平面図、第１
２図はタイプライタキーの斜視図、第１３図は第１２図
のＸ−Ｘ＠断面図、第１４図は従来の方法で成形された
第１成形部の斜視図である。 ２．２′・・・文字部分、３・・・第１成形部、４・・
・第２成形部、５．５′・・・閉鎖成形部分、８・・・
可動型。 ９・・・第１の固定型、１０・・・第２の固定型、１２
・・・溝、１３・・・平板（可動小片）、１７・・・溝
状の空隙、２６・・・ピン。 代理人　　弁理士　　後　藤　男　作 第　１　図 第２図 第３　図 第４図 第５０ 第６図 第７図 第９図 第１０図 第１１図1 to 6 show the first embodiment, and! @ Figures 1 and 2 are cross-sectional views of the mold, Figure 3 is a plan view of the movable mold, and Figure 4 is a cross-sectional view of the mold.
The figure is a plan view of the first fixed mold, FIG. 5 is a plan view of the fixed mold of tjS2, FIG. 6 is a perspective view of the first molding part, and FIGS. 7 to 9 are views of the second embodiment. 7 and 8 are plan views of the first fixed type, FIG. 9 is a plan view of the movable type, and FIGS. 10 and 11 are plan views of the conventional movable type.
2 is a perspective view of the typewriter key, FIG. 13 is a sectional view taken along the line X-X in FIG. 12, and FIG. 14 is a perspective view of the first molded part formed by the conventional method. 2.2'...Character part, 3...First molded part, 4...
・Second molded part, 5.5'...Closed molded part, 8...
Movable type. 9...First fixed mold, 10...Second fixed mold, 12
...Groove, 13...Flat plate (movable small piece), 17...Groove-shaped gap, 26...Pin. Agent Patent Attorney Mano Goto Figure 1 Figure 2 Figure 3 Figure 4 Figure 50 Figure 6 Figure 7 Figure 9 Figure 10 Figure 11

Claims (1)

【特許請求の範囲】 １　成形部を有する可動型と、その可動型の成形部と相
対して樹脂の色に対応したそれぞれの成形部用空間を形
成する複数の固定型とを用いて、周囲を色の異なる樹脂
で囲まれた閉鎖成形部分を複数個有する多色樹脂物品を
一体に成形する多色物品の成形方法において、 前記閉鎖成形部分を取囲む樹脂部分を含む第１成形部を
成形する際に、前記複数の閉鎖成形部分を連結するよう
に連続した溝状の空隙を形成し、次いで、前記複数の閉
鎖成形部分を含む第２成形部を前記第１成形部と色の異
なる樹脂により成形する際に、前記溝状の空隙を介して
各々の閉鎖成形部に樹脂を注入して成形することを特徴
とする多色物品の成形方法。 ２　前記成形方法は、 前記閉鎖成形部分を取囲む樹脂部分を含む第１成形部を
成形する第１の固定型と前記可動型とを相対して形成さ
れる第１成形部用空間中に、前記可動型から１つの可動
小片を突出させ、その可動小片を前記第１の固定型の前
記複数の閉鎖成形部分構成用の各々の突起部に当接させ
た状態でもって、樹脂を注入し第１成形部を成形する第
１の成形工程と、 次いで、前記可動小片を後退させ連続した溝状の空隙を
生じしめる可動小片後退工程と、 次いで、前記第１成形部を前記可動型から取出すことな
く、前記第１の固定型を前記複数の閉鎖成形部分を含む
第２成形部を成形する第２の固定型と取換え、その第２
の固定型と前記第１成形部が付着したままの前記可動型
とを相対させて形成される第２成形部用空間に第１成形
部と色の異なる樹脂を注入し、第２成形部を成形する第
２の成形工程と を含んでいることを特徴とする特許請求の範囲第１項記
載の多色物品の成形方法。 ３　周囲を色の異なる樹脂で囲まれた閉鎖成形部分を複
数個有する多色樹脂物品を、成形部を有する可動型と、
その可動型の成形部と相対して樹脂の色に対応したそれ
ぞれの成形部用空間を形成する複数の固定型とを用いて
、一体に成形する多色成形用金型において、 前記可動型には、前記複数の閉鎖成形部分に対応する箇
所を連絡する溝が設けられ、 その溝には、可動小片が摺動可能に嵌挿され、その可動
小片は、成形部用空間に突出して相対する固定型に当接
する位置から可動型の成形部表面付近に後退した位置ま
で往復移動が可能とされていることを特徴とする多色成
形用金型。 ４　前記可動小片が、一枚の平板である特許請求の範囲
第３項記載の多色成形用金型。[Claims] 1. Using a movable mold having a molding part and a plurality of fixed molds facing the molding part of the movable mold and forming spaces for each molding part corresponding to the color of the resin, A method for molding a multicolored article that integrally molds a multicolored resin article having a plurality of closed molded parts surrounded by resins of different colors, comprising: molding a first molded part including a resin part surrounding the closed molded part; When doing so, a continuous groove-shaped void is formed to connect the plurality of closed molded parts, and then a second molded part including the plurality of closed molded parts is molded with a resin different in color from the first molded part. A method for molding a multicolored article, characterized in that when molding, resin is injected into each closed molding part through the groove-like gap. 2. The molding method includes: forming a space for a first molding part formed by opposing a first fixed mold for molding a first molding part including a resin part surrounding the closed molding part and the movable mold; One movable piece is made to protrude from the movable mold, and with the movable piece in contact with each of the protrusions of the plurality of closed molded parts of the first fixed mold, resin is injected and the first movable piece is injected. a first molding step of molding one molded part; a movable piece retreating step of retracting the movable small piece to create a continuous groove-like gap; and then taking out the first molded part from the movable mold. the first stationary mold is replaced with a second stationary mold for molding a second molding section including the plurality of closed molding parts;
A resin different in color from the first molding part is injected into a space for the second molding part formed by facing the fixed mold and the movable mold to which the first molding part is attached, and forming the second molding part. A method for molding a multicolored article according to claim 1, further comprising a second molding step of molding. 3. A multicolored resin article having a plurality of closed molded parts surrounded by resins of different colors is combined with a movable mold having a molded part,
A multicolor mold for integrally molding using a molding part of the movable mold and a plurality of fixed molds facing each other and forming spaces for respective molding parts corresponding to the color of the resin, wherein the movable mold is is provided with a groove connecting locations corresponding to the plurality of closed molded parts, a movable small piece is slidably inserted into the groove, and the movable small piece protrudes into the molded part space and faces the molded part space. A multicolor molding die characterized in that it is capable of reciprocating movement from a position in contact with a fixed mold to a position retracted near the surface of a molding part of a movable mold. 4. The multicolor mold according to claim 3, wherein the movable piece is a single flat plate.
JP19259985A 1985-08-31 1985-08-31 Molding of multi-color article and mold thereof Granted JPS6251410A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP19259985A JPS6251410A (en) 1985-08-31 1985-08-31 Molding of multi-color article and mold thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP19259985A JPS6251410A (en) 1985-08-31 1985-08-31 Molding of multi-color article and mold thereof

Publications (2)

Publication Number Publication Date
JPS6251410A true JPS6251410A (en) 1987-03-06
JPH0344886B2 JPH0344886B2 (en) 1991-07-09

Family

ID=16293943

Family Applications (1)

Application Number Title Priority Date Filing Date
JP19259985A Granted JPS6251410A (en) 1985-08-31 1985-08-31 Molding of multi-color article and mold thereof

Country Status (1)

Country Link
JP (1) JPS6251410A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06318418A (en) * 1993-11-30 1994-11-15 Alps Electric Co Ltd Key top and manufacture thereof
US7811497B2 (en) 2003-06-24 2010-10-12 Johnson Controls Technology Company Multi-color injection molded door panel and process
WO2011018803A1 (en) * 2009-08-11 2011-02-17 Uniteam Italia S.R.L. Covering panel and method of moulding thereof

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06318418A (en) * 1993-11-30 1994-11-15 Alps Electric Co Ltd Key top and manufacture thereof
US7811497B2 (en) 2003-06-24 2010-10-12 Johnson Controls Technology Company Multi-color injection molded door panel and process
WO2011018803A1 (en) * 2009-08-11 2011-02-17 Uniteam Italia S.R.L. Covering panel and method of moulding thereof

Also Published As

Publication number Publication date
JPH0344886B2 (en) 1991-07-09

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