JPS60245520A - Integrally molding process of molded product mutually separable - Google Patents
Integrally molding process of molded product mutually separableInfo
- Publication number
- JPS60245520A JPS60245520A JP10320884A JP10320884A JPS60245520A JP S60245520 A JPS60245520 A JP S60245520A JP 10320884 A JP10320884 A JP 10320884A JP 10320884 A JP10320884 A JP 10320884A JP S60245520 A JPS60245520 A JP S60245520A
- Authority
- JP
- Japan
- Prior art keywords
- molded product
- molded
- mold
- cavity
- parts
- 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
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
-
- 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
- B29C45/06—Injection moulding apparatus using movable moulds or mould halves mounted on a turntable, i.e. on a rotating support having a rotating axis parallel to the mould opening, closing or clamping direction
- B29C45/062—Injection moulding apparatus using movable moulds or mould halves mounted on a turntable, i.e. on a rotating support having a rotating axis parallel to the mould opening, closing or clamping direction carrying mould halves co-operating with fixed mould halves
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は相対的に移動（回転）可能な成形品、例えば、
歯車と歯車箱、カセットケース（ケースとローラ）、軸
と軸受、又は、相対位置を保持したまた成形した後、組
立時に互に分離する部品、例えばキーボードのキ一群等
を一体に成形する成形方法に関するものである。Detailed Description of the Invention (Industrial Application Field) The present invention relates to relatively movable (rotatable) molded products, such as
A molding method that integrally molds gears and gear boxes, cassette cases (cases and rollers), shafts and bearings, or parts that maintain their relative positions and are separated from each other during assembly, such as a group of keys on a keyboard. It is related to.
（従来技術とその問題点）
号部分に充填して一体に成形する二色成形方法、カセッ
トケースの如く、ケースの窓部を除いた本体部分を成形
した後、窓部に透明な樹脂を射出して一体に成形する多
種成形方法或は金属材料等で予め成形した生成品を金型
内に装入して射出成形的に使用されるものであって、射
出成形される機能部品、例えば、歯車と歯車箱、カセッ
トケースのケースとローラの如く相対的に移動（回転）
するもの或は複数のキーを有するキーボードのキー等は
各々を個々に成形した後組立てているのが実状であり１
せいぜい例えばプラモデルの様に相互に関連する部品を
同一金型で成形してランナーを利用して各構成部品が互
に分離して離散するのを媚
防止すに爲まっている。(Prior art and its problems) A two-color molding method in which the No. 1 part is filled and integrally molded. After molding the main body part of the case excluding the window part, like a cassette case, transparent resin is injected into the window part. It is used for injection molding by various molding methods in which the products are molded in one piece, or by inserting the product pre-molded from metal materials into a mold, and the functional parts to be injection molded, for example, Relative movement (rotation) like gears and gear boxes, cassette case and rollers
The actual situation is that the keys of keyboards with multiple keys are individually molded and then assembled.
At most, mutually related parts, such as plastic models, are molded in the same mold and runners are used to prevent the constituent parts from separating and scattering.
従って、部品成形後複雑な組立工程が不可欠であり組立
工数が増加すると共に部品点数も多くなり部品管理もめ
んどうとなる等、作業能率を著しるしく低下させるとい
う不具合を免れなかった。Therefore, a complicated assembly process is required after the parts are molded, which increases the number of assembly steps, increases the number of parts, and makes parts management troublesome, resulting in a significant decrease in work efficiency.
（目 的）
本発明は上記の不具合を解決するためになされたもので
あって、異種の材料（樹脂）の特定の組合せ或は同種の
材料の特定の成形条件においては一体に成形した複数の
構成部品であっても容易に分離可能であることに着目し
、歯車と歯車箱等の機能部品或は−組のキーボードのキ
ー等を一体に成形して組立時或は組立後に相互に分離す
ることによって部品点数の削減２組立工数の低減を図る
ことを目的とする。(Purpose) The present invention was made in order to solve the above-mentioned problems, and it is possible to use a plurality of integrally molded materials under specific combinations of different materials (resins) or under specific molding conditions for the same materials. Focusing on the fact that even component parts can be easily separated, functional parts such as gears and gear boxes, or keys of a set of keyboards, etc., are molded into one piece and separated from each other during or after assembly. The purpose is to reduce the number of parts and assembly man-hours by doing so.
（構成）
金型内で射出成形された第一成形品を、該成形品よりも
容積の大なる所望形状のキャビティを有する同−又は異
なる金型内に移し、該キャビティ内に第一成形品と非融
着性の樹脂若しくは融着性沼を射出して一体に成形する
こと及び金型内で射出成形した第一成形品を所望温度ま
で冷却した後、この成形品を該成形品よりも容積の大な
る所望形状のキャビティを有する金型内に移し、該キャ
ビティ内に第一成形品と同一の樹脂を射出して一体成形
するようにしたものである。(Structure) A first molded product injection-molded in a mold is transferred to the same or a different mold having a cavity of a desired shape with a larger volume than that of the molded product, and the first molded product is placed in the cavity. and a non-fusible resin or a fusible swamp and are integrally molded, and after cooling the first molded product injection-molded in the mold to a desired temperature, this molded product is The molded product is transferred into a mold having a large volume cavity of a desired shape, and the same resin as that of the first molded product is injected into the cavity to integrally mold the molded product.
（実施例）
第１図は本発明方法を実施するための金型の一例を示す
もので、１は図示しない射出成形機本体に装着した固定
プラテン、２は該固定プラテン１に装着した金型取付板
、３は中間プレート、４は該中間プレート３を介して金
型取付板２に装着した固定側金型、５は図示しない射出
成形橋本゛体に型締機構を介して装着した可動プラテン
、６は該可動プラテン５に装着した金型取付板、奪は該
金型取付板６に型締方向と平行な軸を回転中心として回
転可能にく前記固定側金型４と対向するように装着され
た可動側金型である。 ９，９′は前記金型取付板６内
に移動可能に配設されたエジェクタプレート、１０．１
０’は該エジェクタプレー４９．９’に一端部を装着さ
れたエジェクタビンで、該ピン１０．ＩＱ’は前記可動
側金型８を貫挿し、他端は後述するキャビテイ面又はパ
ーティング面まで延長されている。 １１は前記可動プ
ラテン５を貫挿し、エジェクタプレート９の反金型側面
に向って進退するエジェクタロットである。 １２は前
記金型４，８により形成された第一キャビティ（第−成
形品）、１３は同じく金型４．８により形成された第二
キャビティ（第二成形品、１４は図示しない射出装置に
連設された第一射出／ スＡ＋、１ ｓは同第二射出ノ
ズル、１６はスプルーランナー、１７は）にティング面
である。(Example) Fig. 1 shows an example of a mold for carrying out the method of the present invention, in which 1 is a fixed platen attached to the main body of an injection molding machine (not shown), and 2 is a mold attached to the fixed platen 1. A mounting plate, 3 is an intermediate plate, 4 is a fixed mold attached to the mold mounting plate 2 via the intermediate plate 3, and 5 is a movable platen attached to an injection molded Hashimoto body (not shown) via a mold clamping mechanism. , 6 is a mold mounting plate attached to the movable platen 5, and 6 is a mold mounting plate mounted on the mold mounting plate 6 so as to be rotatable about an axis parallel to the mold clamping direction and facing the stationary side mold 4. This is the attached movable mold. 9 and 9' are ejector plates movably disposed within the mold mounting plate 6; 10.1;
0' is an ejector bin with one end attached to the ejector plate 49.9', and the pin 10. IQ' penetrates the movable mold 8, and the other end extends to a cavity surface or a parting surface, which will be described later. Reference numeral 11 denotes an ejector rod that penetrates the movable platen 5 and moves forward and backward toward the side of the ejector plate 9 opposite to the mold. 12 is a first cavity (first molded product) formed by the molds 4 and 8, 13 is a second cavity (second molded product) also formed by the mold 4.8, and 14 is an injection device (not shown). 1s is a second injection nozzle, 16 is a sprue runner, and 17 is a ring surface.
上記の金型は二色（工材）成形金型として格別目新しい
ものではなく公知のものであるが、本発明では第一成形
品と第二成形品の材料及び第一成形品と第二成形品の成
形工程に特徴を有する。The above-mentioned mold is not particularly new as a two-color (work material) molding mold and is well-known. However, in the present invention, the materials of the first molded product and the second molded product, and the It is characterized by the molding process of the product.
第一図の状態は第一成形品１２を成形した後、第二キャ
ビティに第一成形品１２を装入し、型締した状態を示す
もので−この状態で図示しない射出成形機の射出装置を
作動して射出ノズル１４．１５を介して材料（ｍ脂）を
射出すると第一キャビティ１２では同キャビティ形状と
同一の第一成形品が、また、第２キヤビテイ１３では予
め装入した第一成形品と一体に第二成形品がそれぞれ成
形される。The state shown in Figure 1 shows a state in which after the first molded product 12 has been molded, the first molded product 12 is charged into the second cavity and the mold is clamped.In this state, the injection device of the injection molding machine (not shown) When the material (M resin) is injected through the injection nozzle 14.15, the first molded product having the same shape as the same cavity is produced in the first cavity 12, and the first molded product charged in advance is produced in the second cavity 13. A second molded product is molded integrally with the molded product.
成形完了後型開きして第二成形品１３はエジェクタピン
１０．１０’によって離型し、第一成形品は可動側金型
８内に保持したまま該金型８を回転して型締めすると再
び図示の状態になり前記したと同様の工程を繰返すこと
によりｆ続的に一体成形できる。After the molding is completed, the mold is opened and the second molded product 13 is released by the ejector pins 10 and 10', and the first molded product is held in the movable mold 8 and the mold 8 is rotated to close the mold. By returning to the state shown in the figure and repeating the same steps as described above, continuous integral molding can be achieved.
装置から第一、第二射出ノズルに分配しても良いことは
言うまでもない。Needless to say, it may be distributed from the device to the first and second injection nozzles.
ぞして、合成樹脂は大別する参結晶性の樹脂例えばＰＯ
Ｍ（ポリオ、キシメチレン＆、ナイロン、ＰＢＴ（ポリ
ブチレンテレフタレート）、ＰＥＴ（ポリエチレンテレ
フタレート）と非晶性の樹脂、例えばＡｓ（アクリルス
チレン）、ＰＳ（ポリスチレン）、ＡＢＳ、ポリカーボ
ネート、とに分けられ、一般的に非晶性の樹脂同士は溶
は合い（融着性が強い）が両樹脂の溶融温度差が大きい
場合融着力が弱くなる、結晶性の樹脂同士は特定の条件
で溶は合う（融着する）また、結晶性の樹脂と非晶性の
樹脂とでは非晶性樹脂に結晶性樹脂が入り込む（溶は合
う）場合があるが、結晶性樹脂に非晶性樹脂は入り込ま
ない（溶は合わない）ことは知られている。Therefore, synthetic resins are broadly divided into crystalline resins such as PO
Divided into M (polio, xymethylene & nylon, PBT (polybutylene terephthalate), PET (polyethylene terephthalate) and amorphous resins such as As (acrylic styrene), PS (polystyrene), ABS, polycarbonate, and general Generally, amorphous resins melt together (strong fusion), but if the difference in melting temperature between the two resins is large, the fusion strength becomes weak, and crystalline resins melt together under certain conditions (strong fusion). In addition, when it comes to crystalline resin and amorphous resin, the crystalline resin may enter the amorphous resin (they melt together), but the amorphous resin does not enter the crystalline resin (they melt together). It is known that
即ち、結晶性及び非晶性の樹脂同士を一体に成形する場
合、溶融温度の高いナイロン或はＰＢＴを先に成形し、
これに溶融温度の低いＰＯＭを一体に成形した場合、両
樹脂の密着性は弱く容易に分離できる。 同様に結晶性
の樹脂と非晶性の樹脂とを一体に成形する場合、先に結
晶性の樹脂例えばＰＯＭ、ナイロン、ＰＢＴを成形した
後、これと一体に非晶性の樹脂例えばＡＳ、ＰＳ、ＡＢ
Ｓ等を成形した場合、両樹脂の密着性は弱く容易に分離
できる。 また、相互の樹脂の融着力が大きすぎＺ場合
、先に成形した成形品の冷却度を高めることにより融着
力が小さくなる。That is, when molding crystalline and amorphous resins together, nylon or PBT with a high melting temperature is molded first,
When this is integrally molded with POM having a low melting temperature, the adhesion between the two resins is weak and they can be easily separated. Similarly, when molding a crystalline resin and an amorphous resin together, first mold the crystalline resin, such as POM, nylon, or PBT, and then mold the amorphous resin, such as AS, PS. , AB
When molding S or the like, the adhesion between both resins is weak and they can be easily separated. In addition, if the mutual fusion strength of the resins is too large, the fusion strength becomes smaller by increasing the degree of cooling of the previously molded product.
の如き機能部品或は組立時個々に分離される一組のキー
ボードのキ一群等を一体に成形するものである。Functional parts such as , or a group of keys of a set of keyboards that are separated individually during assembly are integrally molded.
第２図〜第６図は本発明方法により成形し、た歯車と歯
車箱の例で、まず互に噛合う歯車２１．２２互に組合せ
ると互に噛合する歯車を有する歯車箱が完成する。 こ
の第４図の状態では歯車２１と歯車箱２３及び歯車２２
と歯車箱２３’は密着したままであるので、第６図に示
す如く、歯車２１゜２３に小さな外力を加えれば鎖車２
１．２３は歯車箱２３．２３’に予め成形した軸受部２
４に軸受された状態となり容易に回転する。Figures 2 to 6 show examples of gears and gear boxes molded by the method of the present invention. First, the gears 21 and 22 that mesh with each other are assembled to complete a gear box with gears that mesh with each other. . In the state shown in FIG. 4, the gear 21, the gear box 23, and the gear 22
Since the gear box 23' and the gear box 23' remain in close contact with each other, if a small external force is applied to the gears 21 and 23, the chain wheel 2
1.23 is the bearing part 2 pre-formed on the gear box 23.23'
4 and rotates easily.
また、第７〜１０図はキーボードのキ一群の一体 ４成
形例でまず一組（又は一部）のキ一群２５゜２５“・・
・・・・を最終組立位置と同じ相対位置関係で例えばＰ
ＢＴで成形して、これに互に架橋２６するように例えば
ＰＯＭで一体に成形したもので、離型状態では第８図に
示す如くキ一群は所定の相対位置を保持したまま一体に
形成されている。In addition, Figures 7 to 10 show four examples of integral molding of a group of keys on a keyboard.
For example, P in the same relative positional relationship as the final assembly position.
It is molded with BT and then integrally molded with POM, for example, so as to be cross-linked 26 with each other, and when the mold is released, the key group is integrally formed while maintaining a predetermined relative position as shown in FIG. ing.
従って、この状態のまま組立基板２υこ載置して架橋２
６のみを取外せばキ一群は一度で組立てられる。Therefore, in this state, the assembled board 2υ is placed and the bridge 2
If only 6 is removed, the key group can be assembled in one go.
（効果）
以上の通り本発明方法によれば互に分離する必要がある
機能部品或は組立部品を一体に成形できるので、複雑な
組立部品の部品点数を実質的に減少させることが可能と
なりめんどうな部品管理力く容ち
易になると共に組立工数鍮少くなり作業能率も向保持で
きるので、組立精度も向上する等の効果を有する。(Effects) As described above, according to the method of the present invention, functional parts or assembly parts that need to be separated from each other can be integrally molded, making it possible to substantially reduce the number of parts in complex assembly parts, thereby reducing the trouble. Parts management becomes easier, assembly man-hours are reduced, work efficiency can be maintained, and assembly precision is improved.
【図面の簡単な説明】
第１図は本方法を実施するための金型の一例を示す正断
面図、第２図〜第６図は本発明方法により成形した成形
品の一例で、第２図囚は第３図（２）１−１線に沿う平
面図、第２図（Ｂ）は第３図（Ｂ） Ｉｌ−■線に沿う
平面図、第３図（ＡＪは第２図（５）Ｉ−１に沿う断面
図、第３図ＣＢ＋は第２図（Ｂ）Ｎ−ＩＶ線に沿う断面
図、第４図は組立状態を示す断面図、第５゜６図は第４
図Ａ部の拡大図、第７〜１０図は他の成形品の例で第７
図は平面図、第８図は第７図■−■線に沿う断面図、第
９．１０図は組立状態を示す断面図である。[Brief Description of the Drawings] Figure 1 is a front sectional view showing an example of a mold for carrying out the method of the present invention, and Figures 2 to 6 are examples of molded products molded by the method of the present invention. Figure 3 (B) is a plan view taken along line 1-1 of Figure 3 (2), Figure 2 (B) is a plan view taken along line Il-■ of Figure 3 (AJ is Figure 2 ( 5) A cross-sectional view along line I-1, Figure 3 CB+ is a cross-sectional view along line N-IV of Figure 2 (B), Figure 4 is a cross-sectional view showing the assembled state, and Figures 5 and 6 are cross-sectional views of Figure 4.
Enlarged view of part A in Figure 7 to Figure 10 are examples of other molded products.
The figure is a plan view, FIG. 8 is a sectional view taken along line 7--7 in FIG. 7, and FIGS. 9 and 10 are sectional views showing an assembled state.
Claims (1)
も容積の大なる所望形状のキャビティを有する同−又は
異なる金型内に移し、該キャビティ内に第一成形品と非
融着性の材料若しくは融着性の小さい材料を射出して一
体に成形することを特徴とする互に分離可能な成形品の
一体成形方法。 ２）金型内で射出成形した第一成形品を所望温度まで冷
却した後、該成形品よりも容積の大なる所望形状のキャ
ビティを有する同−又は異なる金型内に移し、該キャビ
ティ内に第一成形品と同一材料を射出して一体に成形す
ることを特徴とする互に分離可能な成形品の一体成形方
法。[Claims] 1) A first molded product injection-molded in a mold is transferred into the same or a different mold having a cavity of a desired shape with a larger volume than that of the molded product, and A method for integrally molding molded products that can be separated from each other, characterized by integrally molding the first molded product and a non-fusible material or a material with low fusibility. 2) After cooling the first molded product injection-molded in the mold to a desired temperature, transfer it to the same or a different mold having a cavity of the desired shape and larger volume than the molded product, and place the molded product in the cavity. A method for integrally molding molded products that can be separated from each other, characterized by integrally molding the same material as the first molded product by injection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10320884A JPS60245520A (en) | 1984-05-22 | 1984-05-22 | Integrally molding process of molded product mutually separable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10320884A JPS60245520A (en) | 1984-05-22 | 1984-05-22 | Integrally molding process of molded product mutually separable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS60245520A true JPS60245520A (en) | 1985-12-05 |
Family
ID=14348089
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10320884A Pending JPS60245520A (en) | 1984-05-22 | 1984-05-22 | Integrally molding process of molded product mutually separable |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60245520A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5753151A (en) * | 1996-05-28 | 1998-05-19 | Windsor Mold Inc. | Method and apparatus for molding composite articles |
| JPH1119939A (en) * | 1997-07-03 | 1999-01-26 | Central Fine Tool:Kk | Molding/assembling device for resin finished product and method for molding/assembling resin finished product |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51151753A (en) * | 1975-06-20 | 1976-12-27 | Matsushita Electric Ind Co Ltd | Method of producing resin product with slide |
| JPS55146724A (en) * | 1980-04-21 | 1980-11-15 | Yoshida Kogyo Kk <Ykk> | Double molding device using different kinds of materials |
-
1984
- 1984-05-22 JP JP10320884A patent/JPS60245520A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51151753A (en) * | 1975-06-20 | 1976-12-27 | Matsushita Electric Ind Co Ltd | Method of producing resin product with slide |
| JPS55146724A (en) * | 1980-04-21 | 1980-11-15 | Yoshida Kogyo Kk <Ykk> | Double molding device using different kinds of materials |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5753151A (en) * | 1996-05-28 | 1998-05-19 | Windsor Mold Inc. | Method and apparatus for molding composite articles |
| JPH1119939A (en) * | 1997-07-03 | 1999-01-26 | Central Fine Tool:Kk | Molding/assembling device for resin finished product and method for molding/assembling resin finished product |
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