JPH0692095B2 - Molding method for multicolor molded products - Google Patents
Molding method for multicolor molded productsInfo
- Publication number
- JPH0692095B2 JPH0692095B2 JP63297717A JP29771788A JPH0692095B2 JP H0692095 B2 JPH0692095 B2 JP H0692095B2 JP 63297717 A JP63297717 A JP 63297717A JP 29771788 A JP29771788 A JP 29771788A JP H0692095 B2 JPH0692095 B2 JP H0692095B2
- Authority
- JP
- Japan
- Prior art keywords
- color
- engraving
- molding
- nozzle
- molded product
- 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.)
- Expired - Lifetime
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
- B29C45/1615—The materials being injected at different moulding stations
- B29C45/1628—The materials being injected at different moulding stations using a mould carrier rotatable about an axis perpendicular to the opening and closing axis of the moulding stations
-
- 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
- B29C45/03—Injection moulding apparatus
- B29C45/04—Injection moulding apparatus using movable moulds or mould halves
- B29C45/0441—Injection moulding apparatus using movable moulds or mould halves involving a rotational movement
- B29C45/045—Injection moulding apparatus using movable moulds or mould halves involving a rotational movement mounted on the circumference of a rotating support having a rotating axis perpendicular to the mould opening, closing or clamping direction
Description
本発明は多色とした樹脂成形品の成形方法に関するもの
である。The present invention relates to a method for molding a multicolored resin molded product.
従来のこの種の成形方法を具体的に二色の例で示すもの
が第４図であり、回転金型21には回転軸21aを点対称と
して同じ形状の第一彫込部22と第二彫込部23とが設けら
れていて、夫々の彫込部22と23とは更に第一色彩部22
a、23aと第二色彩部22b、23bとに区分されているもので
ある。 前記回転金型を二色成形機（図示は省略する）に取付
け、先ず第４図（Ａ）に示す状態で、前記第一彫込部22
の第一色彩部22aには例えば赤色の樹脂を第一ノズル24
から射出し、同時に第二彫込部23の第二色彩部23bに例
えばアンバ色の樹脂を第二ノズル25から射出する。 次に、第４図（Ｂ）に示すように回転金型21を180度回
転させ再度、同様に第一ノズル24と第二ノズル25から射
出を行えば、前記第一彫込部22と第二彫込部23とに全く
同形の成形品を得られるものとなる。FIG. 4 shows a concrete example of this type of conventional molding method in a two-color example. The rotary mold 21 has a first engraved portion 22 and a second engraved portion 22 which have the same shape with the rotary shaft 21a as point symmetry. An engraving section 23 is provided, and each engraving section 22 and 23 further includes a first color section 22.
It is divided into a and 23a and second color portions 22b and 23b. The rotary mold is attached to a two-color molding machine (not shown), and first, in the state shown in FIG.
For example, red resin is applied to the first color portion 22a of the first nozzle 24
At the same time, for example, amber resin is injected from the second nozzle 25 to the second color portion 23b of the second engraving portion 23. Next, as shown in FIG. 4 (B), the rotary mold 21 is rotated 180 degrees, and injection is again performed from the first nozzle 24 and the second nozzle 25 in the same manner. A molded product having exactly the same shape as the second engraving portion 23 can be obtained.
具体的に車両用レンズなどの成形時などについては、例
えば右用30aと左用30bとが全く同一形状とされているに
も係わらず、一方のレンズ、例えば左用30bのみに記号
などの表示が義務付けられている場合があり、このよう
な場合には前記第一彫込部22と第二彫込部23との対応す
る部分を入れ子として形成しておき、例えば記号無しの
右用30aを所定数だけ成形した後に、前記第一彫込部22
と第二彫込部23との夫々の入れ子の交換を行い、再度同
様な手順で記号付の左用30bを所定数だけ成形するもの
であった。 しかしながら、前記した樹脂成形においては金型の交換
が最大のロスタイムになるものであり、実質的には一種
類の製品を得るために途中に停止時間を設けざるを得な
いのは生産効率を大きく阻害すると云う課題を生ずるも
のとなっていた。Specifically, when molding a vehicle lens, etc., for example, even though the right 30a and the left 30b have exactly the same shape, it is mandatory to display a symbol or the like on only one lens, for example, the left 30b. In such a case, the corresponding portions of the first engraving portion 22 and the second engraving portion 23 are formed as a nest, for example, a predetermined number of right-use 30a without a symbol. After only molding, the first engraving part 22
The respective nests of the second engraving section 23 and the second engraving section 23 are exchanged, and a predetermined number of left 30b for symbols are molded again by the same procedure. However, in the above-mentioned resin molding, the replacement of the mold becomes the maximum loss time, and in practice it is necessary to provide a stop time in the middle to obtain one type of product, which increases the production efficiency. It caused a problem called inhibition.
本発明は、前記した従来の課題を解決するための具体的
手段として、複数の彫込部を有する回転金型と多色成形
機を使用する多色成形品の成形方法において、夫々の前
記彫込部の少なくとも一方の同一色となる部分を他の一
方に対して異なる形状としてあり、一方の色のノズルに
対峙する彫込部には一方の色の樹脂から注入し、他方の
色のノズルに対峙する彫込部には他方の色の樹脂から注
入することを特徴とする多色成形品の成形方法を提供す
ることで、前記従来の課題を解決するものである。As a concrete means for solving the above-mentioned conventional problems, the present invention provides a method for molding a multicolor molded product using a rotary mold having a plurality of engraving parts and a multicolor molding machine, wherein At least one part of the engraved part having the same color has a different shape from the other, and the engraved part facing the nozzle of one color is injected from the resin of one color and the nozzle of the other color. The conventional problem is solved by providing a molding method of a multicolor molded product, which is characterized in that a resin of the other color is injected into the engraving part facing the above.
つぎに、本発明を図に示す一実施例に基づいて詳細に説
明する。 第１図および第２図は工程の順に示した本発明の多色成
形品の成形方法であり、理解を容易とするために従来例
と同じ二色成形の車両用レンズの例で説明する。 先ず、第１図において、回転金型１には第一彫込部２と
第二彫込部３とがあり、夫々の彫込部２、３には夫々に
第一色彩部2a、3aおよび第二色彩部2b、3bが形成されて
いるのは従来例のものと同様であるが、前記第一彫込部
２の第一色彩部2aには、例えば記号2cが彫込まれ、これ
に対応する第二彫込部の第一色彩部3aには彫込が行われ
ていないものとされている。 この状態で、例えば赤色樹脂を射出する第一ノズル４で
前記第一彫込部２の第一色彩部2aへ、アンバ色樹脂を射
出する第二ノズル５から第二彫込部の第二色彩部3bに同
時に射出を行い、その後に第２図に示すように回転金型
１を回転軸1aを中心として180度回転させ、前記したの
と同様な手順で再度第一ノズル４と第二ノズル５とから
射出を行う。 前記した１サイクルが終了した時点で、第３図に示すよ
うに、前記第一彫込部２には信号2c付の左用レンズ10L
と、無しの右用レンズ10Rとの一対が得られるものとな
り、成形サイクルを必要数だけ繰り返すことで、夫々を
必要数だけ得られるものとなり、この間に従来の方法で
必要とした休止期間は無いものとなる。Next, the present invention will be described in detail based on an embodiment shown in the drawings. 1 and 2 show a method of molding a multicolor molded product of the present invention shown in the order of steps, and for ease of understanding, an example of a two-color molded vehicle lens similar to the conventional example will be described. First, in FIG. 1, the rotary mold 1 has a first engraving section 2 and a second engraving section 3, and the respective engraving sections 2 and 3 have first color portions 2a, 3a and The second color portions 2b and 3b are formed in the same manner as in the conventional example, but the first color portion 2a of the first engraving portion 2 is engraved with a symbol 2c, for example. Engraving is not performed on the corresponding first color portion 3a of the second engraving portion. In this state, for example, the first nozzle 4 for injecting red resin to the first color portion 2a of the first engraving portion 2 and the second color for the second engraving portion from the second nozzle 5 for injecting amber resin The parts 3b are simultaneously injected, and thereafter, the rotary mold 1 is rotated 180 degrees about the rotary shaft 1a as shown in FIG. 2, and the first nozzle 4 and the second nozzle 4 are again rotated in the same procedure as described above. Injection is performed from 5 and. At the end of the above-mentioned one cycle, as shown in FIG. 3, the first engraving section 2 has a left lens 10L with a signal 2c.
, And a pair of right lens 10R without the lens, and by repeating the molding cycle as many times as necessary, each of them can be obtained as many as necessary, and there is no pause period required by the conventional method in the meantime. Will be things.
以上に説明したように本発明により一方の彫込部と、他
の一方の彫込部との形状を異なるものとしたことにより
一対の製品が同時に得られるものとなり、途中に行う金
型の交換などを無くし、生産効率を飛躍的に高くすると
云う卓越した効果を奏するものである。As described above, a pair of products can be obtained at the same time by making the shape of one engraved portion different from the shape of the other engraved portion according to the present invention. It has the outstanding effect of dramatically improving production efficiency by eliminating such problems.
第１図、第２図は本発明に係る多色成形品の成形方法の
一実施例を工程の順に示す説明図、第３図は本発明によ
り得られる成形品の例を示す正面図、第４図は従来の工
程を示す説明図、第５図は従来例で得られる成形品の例
を示す正面図である。 １……回転金型 1a……回転軸、 ２……第一彫込部 2a……第一色彩部、2b……第二色彩部 2c……記号 ３……第二彫込部 3a……第一色彩部、3b……第二色彩部 ４……第一ノズル、５……第二ノズル 10L……左用レンズ、10R……右用レンズ1 and 2 are explanatory views showing an embodiment of a method of molding a multicolor molded product according to the present invention in the order of steps, and FIG. 3 is a front view showing an example of a molded product obtained according to the present invention. FIG. 4 is an explanatory view showing a conventional process, and FIG. 5 is a front view showing an example of a molded product obtained in a conventional example. 1 …… Rotating mold 1a …… Rotary axis, 2 …… First engraving part 2a …… First color part, 2b …… Second color part 2c …… Symbol 3 …… Second engraving part 3a …… First color part, 3b …… Second color part 4 …… First nozzle, 5 …… Second nozzle 10L …… Left lens, 10R …… Right lens
Claims (1)
機を使用する多色成形品の成形方法において、夫々の前
記彫込部の少なくとも一方の同一色と成る部分を他の一
方に対して異なる形状としてあり、一方の色のノズルに
対峙する彫込部には一方の色の樹脂から注入し、他方の
色のノズルに対峙する彫込部には他方の色の樹脂から注
入することを特徴とする多色成形品の成形方法。1. A method of molding a multicolor molded product using a rotary mold having a plurality of engraved parts and a multicolor molding machine, wherein at least one of the engraved parts is replaced by another part having the same color. There is a different shape for one side, and the engraving part facing the nozzle of one color is filled with resin of one color, and the engraving part facing the nozzle of the other color is filled with resin of the other color. A method for molding a multicolor molded product, which comprises injecting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63297717A JPH0692095B2 (en) | 1988-11-25 | 1988-11-25 | Molding method for multicolor molded products |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63297717A JPH0692095B2 (en) | 1988-11-25 | 1988-11-25 | Molding method for multicolor molded products |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02143819A JPH02143819A (en) | 1990-06-01 |
| JPH0692095B2 true JPH0692095B2 (en) | 1994-11-16 |
Family
ID=17850260
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63297717A Expired - Lifetime JPH0692095B2 (en) | 1988-11-25 | 1988-11-25 | Molding method for multicolor molded products |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0692095B2 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| PT1475209E (en) * | 1997-01-29 | 2007-01-31 | Jes Tougaard Gram | Mould for producing of an assembled object |
| WO1998038021A1 (en) | 1997-02-25 | 1998-09-03 | Jes Tougaard Gram | Procedure and machine for multi component moulding |
| CA2375668A1 (en) * | 1999-05-17 | 2000-12-07 | Jes Tougaard Gram | Mould with turnable middle section |
| US6709251B2 (en) | 2001-11-16 | 2004-03-23 | Mgs Enterprises, Inc. | Self-contained frameless rotating mold support |
| CH702831A2 (en) | 2010-03-02 | 2011-09-15 | Foboha Gmbh Formenbau | RETAINING DEVICE FOR A ROTATABLE CENTRE IN an injection molding. |
| CN107756734B (en) * | 2017-09-13 | 2020-02-11 | 上海德舒赫金属制品有限公司 | Four-station mold and injection molding method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5212267A (en) * | 1975-07-18 | 1977-01-29 | Matsushita Electric Ind Co Ltd | Apparatus for injection molding synthetic resin |
| JPS5428363A (en) * | 1977-08-04 | 1979-03-02 | Yoshiaki Fukushima | Twoocolor molding method for plastic handle of cooking tools such as spoon or knife |
-
1988
- 1988-11-25 JP JP63297717A patent/JPH0692095B2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5212267A (en) * | 1975-07-18 | 1977-01-29 | Matsushita Electric Ind Co Ltd | Apparatus for injection molding synthetic resin |
| JPS5428363A (en) * | 1977-08-04 | 1979-03-02 | Yoshiaki Fukushima | Twoocolor molding method for plastic handle of cooking tools such as spoon or knife |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02143819A (en) | 1990-06-01 |
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