JPS6282014A - Plastic injection molding method - Google Patents
Plastic injection molding methodInfo
- Publication number
- JPS6282014A JPS6282014A JP22320985A JP22320985A JPS6282014A JP S6282014 A JPS6282014 A JP S6282014A JP 22320985 A JP22320985 A JP 22320985A JP 22320985 A JP22320985 A JP 22320985A JP S6282014 A JPS6282014 A JP S6282014A
- Authority
- JP
- Japan
- Prior art keywords
- mold
- central mold
- central
- injection molding
- sides
- 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
Links
- 238000001746 injection moulding Methods 0.000 title claims abstract description 27
- 229920003023 plastic Polymers 0.000 title claims abstract description 26
- 239000004033 plastic Substances 0.000 title claims abstract description 26
- 238000002347 injection Methods 0.000 claims abstract description 18
- 239000007924 injection Substances 0.000 claims abstract description 18
- 238000000034 method Methods 0.000 abstract description 9
- 238000000465 moulding Methods 0.000 abstract description 6
- 238000003780 insertion Methods 0.000 abstract description 4
- 230000037431 insertion Effects 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 235000010724 Wisteria floribunda Nutrition 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000011218 seed culture Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/32—Moulds having several axially spaced mould cavities, i.e. for making several separated articles
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
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明はプラスチックの射出成形方法に関する０
〔従来の技術〕
第１０図に示す如く、従来のプラスチック射出成形装置
３０は一般に固定型３１と移動型３２とを用い１両者間
に型凹部（キャビティ）３３ヲ形成し１適宜のプラスチ
ック射出機構ｃ文示省略）によりト記型凹部に溶融プラ
スチックを圧入し成形する手段が採られている。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a plastic injection molding method. [Prior Art] As shown in FIG. A method is adopted in which a mold cavity 33 is formed between the two using a mold 32, and molten plastic is press-fitted into the mold cavity by an appropriate plastic injection mechanism (not shown).
上記射出成形はプラスチックの冷却凝固するまでには一
定の時間を要し、従って射出成形のサイクル時間の短縮
には限度がある。このため小車部品の成形においては、
上記固定、移動両型の対向面に多数の型凹部を設け、能
率の向上を計る手段が採られているが、その数には限度
がある。The above-mentioned injection molding requires a certain amount of time for the plastic to cool and solidify, and therefore there is a limit to how much the cycle time of injection molding can be shortened. For this reason, when molding small car parts,
A measure has been taken to improve efficiency by providing a large number of mold recesses on the facing surfaces of both the fixed and movable molds, but there is a limit to the number of mold recesses.
本発明はかかる点に鑑み、従来の射出成形法に比し、同
一サイクル時間毎に、従来より多数の成形品を形成する
ことを目的とする。In view of the above, an object of the present invention is to form a larger number of molded products per cycle time than conventional injection molding methods.
上記目的を達成するための本発明を実施例に対応する第
１〜７図を用いて説明する０中央型３を挾んで左右に移
動型５．６を配儂し、中央型３と両側の移動型５，６と
の間にそれぞれ溶融プラスチックを注入する型凹部１５
１に形成する。そして共通のブンスナック射出機構校よ
り射出される溶融プラスチックを上記中央型３０両側の
型四部１５に同時に供給し、射出成形を行う。To achieve the above object, the present invention will be explained with reference to FIGS. 1 to 7 corresponding to the embodiments.0 A movable mold 5.6 is distributed to the left and right between the central mold 3, and the central mold 3 and both sides of the movable mold 5. Mold recesses 15 into which molten plastic is injected between the movable molds 5 and 6, respectively.
1. Then, molten plastic injected from a common Bunsnack injection mechanism is simultaneously supplied to the four mold parts 15 on both sides of the central mold 30 to carry out injection molding.
中央型３の両側面において同時に射出成形により成形品
Ｗを形成し、これにより生産能率の向上を計ることがで
きる。The molded product W can be formed by injection molding on both sides of the central mold 3 at the same time, thereby improving production efficiency.
第１〜７図は本発明方法を実施するためのプラスチック
射出成形装置を示すもので、本実施例はこの射出成形装
置により第８〜９図に示す如くビンＰをインサート加工
した射出成形品Ｗを形成する例全示す。この射出成形装
置ｉｆｌは、第４〜５図ニ示す如くプラテン２を備え、
このプラテン２の前面にはこれと直交し、かつ周囲に中
央型３を備えた回転円板４と、この中央型３を挾んで左
右方向に移動可能の移動型５，６を備える。Figures 1 to 7 show a plastic injection molding apparatus for carrying out the method of the present invention, and the present example shows an injection molded product W having a bottle P inserted therein as shown in Figures 8 to 9 using this injection molding apparatus. Show all examples of forming . This injection molding apparatus ifl is equipped with a platen 2 as shown in FIGS.
The front surface of the platen 2 is provided with a rotary disk 4 which is perpendicular to the platen 2 and has a central mold 3 around it, and movable molds 5 and 6 which are movable in the left-right direction while sandwiching the central mold 3.
中央型３は回転円板４に複数（図例は８個）取付けられ
、回転円板４には適所にピン供給機構７を対設し、かつ
割出し機構８により８分の１回転づつタクト回転を行い
、中央型３を左右の移動型５．６との対向位置即ち射出
成形位置に移行する。A plurality of central molds 3 (eight in the example shown) are attached to a rotary disk 4, and a pin supply mechanism 7 is provided at a suitable position on the rotary disk 4, and an indexing mechanism 8 rotates the pins in tact by one-eighth rotation at a time. The center mold 3 is rotated and moved to a position facing the left and right movable molds 5.6, that is, an injection molding position.
左右それぞれの移動型５，６は同一構造であり、それぞ
れ進退用シリンダ１０’ｌ、１（ｌを備え、移動型５．
６はプラテン２に取付けられるベースプレート１１に沿
って移行し、上記シリンダ１０（１，１０６と各移動型
５，６との間には、例えばトグル機構等を介在させ、押
圧時は移動型の復行を阻止する如くなす。The left and right movable molds 5 and 6 have the same structure, respectively, and are provided with advancing and retracting cylinders 10'l and 1(l).
6 moves along the base plate 11 attached to the platen 2, and a toggle mechanism or the like is interposed between the cylinder 10 (1, 106) and each movable mold 5, 6, so that the movable mold returns when pressed. It's like blocking the line.
なお、上記プラテン２の後方には周知構造のプラスチッ
ク射出機構１２ｔ−ａえ、プラテン２には、上記中央型
３に対向してプラスチック注出孔１３を穿設する。上記
中央型３の両側面と左右の移動型５．６との対向面には
射出成形用の型凹部（キャビティ）１５を形成する。こ
の型凹部１５は後述する如く、成形操作後移動型５，６
を後退させたとき、この移動型５，６に射出成形品Ｗが
付着し中央型３から離間するように例えば中央型３の型
凹部には抜は勾配を付することが好ましい。なお、中央
型３には、ビンＰｔ挿入する挿入孔１６ヲ穿孔する。A plastic injection mechanism 12t-a of a well-known structure is installed behind the platen 2, and a plastic injection hole 13 is formed in the platen 2 so as to face the central mold 3. Mold recesses (cavities) 15 for injection molding are formed on both sides of the central mold 3 and on the opposing surfaces of the left and right movable molds 5.6. As will be described later, this mold recess 15 is provided with movable molds 5 and 6 after the molding operation.
For example, it is preferable that the mold concave portion of the central mold 3 is sloped so that the injection molded product W adheres to the movable molds 5 and 6 and separates from the central mold 3 when the movable molds 5 and 6 are moved back. Note that an insertion hole 16 into which the bottle Pt is inserted is bored in the central mold 3.
また、中央型３の両側面、または移動型５，６には、前
記射出機構１２より供、給される溶融プラスチックを種
菌１５に導くための湯道１７ ｋ形成する。この湯道１
７の先端全上記ブラテ゛ン２の注出孔１３に連通するた
め、中央型３の先端を断面Ｖ字形とし為左右移動型５，
６もこれに倣った傾斜面とすることが好ましい。Further, on both sides of the central mold 3 or on the movable molds 5 and 6, runners 17k are formed for guiding the molten plastic supplied from the injection mechanism 12 to the seed culture 15. This hot water path 1
In order to communicate with the spout hole 13 of the above-mentioned platen 2, the tip of the central mold 3 is made V-shaped in cross section.
It is preferable that the slope 6 also has a similar slope.
なお、第１〜２図は中央型３の両側に１個づつの型四部
１５を形成した例を示したが、これはそれぞれ複数個形
成することが好ましい。第４図は中央型３９両面にそれ
ぞれ２個の型凹部を形成した例を示す。Although FIGS. 1 and 2 show an example in which one mold four part 15 is formed on each side of the central mold 3, it is preferable to form a plurality of mold parts 15 on each side. FIG. 4 shows an example in which two mold recesses are formed on each side of the central mold 39.
前記ビン供給機構７は第６〜７図に示す。本例の射出成
形品Ｗは、３個づつ上下２列に合計６ （！！のピンＰ
をインサート加工するようにしたもので、併列する３個
のピンＰは接続部ａ、ｂにおいチ一体内に連結して帯状
の７−ブＦを形成し、各フープＦは供給リール２０．２
０に巻付けられる。上記ピン供給機構７は、供給リール
２０がら繰出される７−ブＦの直線性を矯正するための
矯正機２１と、繰出ローラ２２及び上記接続部ａ、ｂを
切断するためのカッタ２４．２５を備えた切断部器とを
備える。The bottle supply mechanism 7 is shown in FIGS. 6-7. The injection molded products W in this example are arranged in two rows of three pieces each, top and bottom, with a total of 6 pins (!!)
The three pins P arranged in parallel are connected in one piece at the connection parts a and b to form a band-shaped 7-bunch F, and each hoop F is connected to the supply reel 20.2.
0. The pin supply mechanism 7 includes a straightening machine 21 for correcting the linearity of the 7-branch F fed out from the supply reel 20, a feed roller 22, and cutters 24 and 25 for cutting the connection parts a and b. and a cutting device.
なお、第４図において２６は中央型３に挿入されるピン
Ｐの有無を検出する検出機構、２７は後述する如く湯道
１７に残存するランナの除去機構である。In FIG. 4, 26 is a detection mechanism for detecting the presence or absence of the pin P inserted into the central mold 3, and 27 is a mechanism for removing the runner remaining in the runner 17, as will be described later.
次に上記射出成形装置１による射出成形装置１による射
出成形方法について説明する。Next, an injection molding method using the injection molding apparatus 1 described above will be explained.
先づビン供給機構７において供給リール２０より繰出さ
れるフープＦを矯正機２１により直線性を矯正し切断部
路において接続部σ、ｂを切断し、各ビン戸毎に分離し
、繰出ローラ弗により押出して中央型３のピン挿入孔１
６に挿入する。次いで円板４をタクト回動し、ビン検出
機構２６によりビンＰの挿入の有無を検出し、プラテン
２に対向する成形位置に定位させる。これと同期して左
右の移動型５，６を進退用シリンダ１０ａ、１（３ｂに
より１１ｊ１進し中央型３を圧接挟持する。しかる後射
出機構１２よりプラスチックを射出し、湯道１７ヲ介し
て中央型３の１両側に設けられる型四部１５内に圧入す
る。First, in the bottle supply mechanism 7, the straightener 21 corrects the straightness of the hoop F fed out from the supply reel 20, cuts the connecting parts σ and b at the cutting path, separates each bottle door, and transfers the hoop F to the feeding roller. Push out the pin insertion hole 1 of the central mold 3.
Insert into 6. Next, the disk 4 is rotated in a tact, the presence or absence of insertion of the bottle P is detected by the bottle detection mechanism 26, and the disk 4 is positioned at a molding position facing the platen 2. In synchronization with this, the left and right movable molds 5 and 6 are advanced and retracted by cylinders 10a and 1 (3b) to press and hold the central mold 3. After that, plastic is injected from the injection mechanism 12 and passed through the runner 17. It is press-fitted into the four mold parts 15 provided on both sides of the central mold 3.
圧入されたプラスチックが冷却凝固樹脂体Ａ（第８〜９
図）を形成した後、左右の移動型５．６ｔ−後退させる
。この場合、形成された射出成形品Ｗは前述の如く移動
型５，６に付着して中央型３から取り出すことが好まし
くＡ移動型５，６に付着した射出成形品Ｗは１例えばそ
れぞれの移動型に取付けられる突出しピン（図示省略）
により突き出して排出される。この場合、湯道１７に残
存するランナは中央型３を挾んでＶ字状となっており、
従って移動型５．６に付着して除去されることなく中央
型３に付着したままである。このランナは円板４が回動
し中央型３が下方に移行したとぎ、ランナ除去両溝２７
により除去される。このランナは、例えば上記プラテン
２に設けられる注出孔１３に連結する部分を把持し、こ
れを引脹ることにより容易に除去することができる。The press-fitted plastic is cooled and solidified resin body A (8th to 9th
After forming (Fig.), the left and right moving mold 5.6t is retreated. In this case, it is preferable that the formed injection molded product W adheres to the movable molds 5 and 6 as described above and is taken out from the central mold 3. The injection molded product W that adheres to the A movable molds 5 and 6 is preferably Ejector pin attached to the mold (not shown)
It is ejected by protruding. In this case, the runners remaining in the runner 17 are V-shaped, sandwiching the central mold 3.
Therefore, it adheres to the movable mold 5.6 and remains attached to the central mold 3 without being removed. When the disk 4 rotates and the central mold 3 moves downward, the runner is removed by the runner removal grooves 27.
removed by This runner can be easily removed, for example, by grasping the portion connected to the pouring hole 13 provided in the platen 2 and inflating it.
以上の操作を各中央型３毎に繰返す。なお上記成形方法
はピンＰの一部を埋込んだインサート加工方法について
述べたが、必ずしもこれに限るものではなく、本発明を
通常の射出成形に適用できることは勿論である。The above operation is repeated for each central mold 3. Although the above molding method has been described as an insert processing method in which a part of the pin P is embedded, the invention is not necessarily limited to this, and it goes without saying that the present invention can be applied to normal injection molding.
本発明によるときは中央型の両側面に移動型を配備し中
央型の両側面において同時に射出形＊１−行うようにし
たから、従来の１組の固定型と移動型との組合わせによ
る射出成形方法に比し約２倍の生産能力を得ることがで
き＼能率向上にきわめて有効である。According to the present invention, movable molds are arranged on both sides of the central mold, and injection molding*1 is performed simultaneously on both sides of the central mold, so injection is performed using a combination of a fixed mold and a movable mold as in the past. Compared to the molding method, it is possible to obtain approximately twice the production capacity and is extremely effective in improving efficiency.
第１〜７図は本発明方法を実施するためのプラスチック
射出成形装置に関し、第１図は射出成形要領を示す説明
図、第２図は中央型の平面図、第３図は第１図における
Ｘ−Ｘ線に沿う断面図、第４図は射出成形装置の全体正
面図、第５図は第４図における右側面図、第６〜７図は
ピン供給機構に関し１第６図はその概略説明図、第７図
はその平面図、第８図は射出成形品の一部切欠した平面
図、第９図はその右側面図、第１０図は従来の射出成形
装置の作動説明図である。
ｌはプラスチック射出成形装置、３は中央型、５．６は
移動塵、認はプラスチック射出機構、 １５は型凹部で
ある。
図面の浄書（内容に変更なし）
手 続 補 正 書 （方式）特許庁、＆！
ア。工部“ｍ、ｊｌ ＊ 五）’ｊ、２７） Ｅ３し
１、事件の表示 特願８８韻〜２２３２０９号２・ 発
明の名称 プラスチック射出成形方法３、補正する者
事件との関係 出 願 人
日本スピンドル製造株式会社
４、代理人
大阪市西区西本町１丁目２番８号第５富士ビル新館内（
６３８３） 弁理士 池 １）萬 喜 生（外１名）
５、指令又は通知の日付 昭和７７年 ７月
２ｚ日６、補正の対象
図面
７、補正の内容Figures 1 to 7 relate to a plastic injection molding apparatus for carrying out the method of the present invention, Figure 1 is an explanatory diagram showing the injection molding procedure, Figure 2 is a plan view of the central mold, and Figure 3 is the same as that in Figure 1. 4 is a front view of the entire injection molding device, FIG. 5 is a right side view of FIG. 4, and FIGS. 6 and 7 are a schematic diagram of the pin supply mechanism. 7 is a plan view thereof, FIG. 8 is a partially cutaway plan view of the injection molded product, FIG. 9 is a right side view thereof, and FIG. 10 is an explanatory diagram of the operation of a conventional injection molding device. . 1 is a plastic injection molding device, 3 is a central mold, 5.6 is moving dust, 1 is a plastic injection mechanism, and 15 is a mold recess. Engraving of drawings (no changes to the content) Procedures Amendment (Method) Patent Office, &!
a. Engineering Department "m, jl * 5)'j, 27) E3shi1, Indication of the case Patent application No. 88 Rhyme ~ No. 223209 2. Title of the invention Plastic injection molding method 3, relationship with the amended person case Applicant Japan Spindle Manufacturing Co., Ltd. 4, Agent: No. 5 Fuji Building New Building, 1-2-8 Nishihonmachi, Nishi-ku, Osaka (
6383) Patent Attorney Ike 1) Yoshio Yomo (one other person)
5. Date of directive or notification July 2z, 1987 6. Drawings subject to amendment 7. Contents of amendment
Claims (1)
移動型との間にそれぞれ溶融プラスチックを注入する型
凹部を形成し、共通のプラスチック射出機構より送り出
される溶融プラスチックを上記中央型の両側の型凹部に
同時に供給し射出成形を行うことを特徴とするプラスチ
ック射出成形方法。Movable molds are placed on both sides of the central mold, and mold recesses into which molten plastic is injected are formed between the central mold and the movable molds on both sides, and the molten plastic sent out from a common plastic injection mechanism is injected into the central mold. A plastic injection molding method characterized in that injection molding is performed by simultaneously feeding into mold recesses on both sides.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22320985A JPS6282014A (en) | 1985-10-07 | 1985-10-07 | Plastic injection molding method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22320985A JPS6282014A (en) | 1985-10-07 | 1985-10-07 | Plastic injection molding method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6282014A true JPS6282014A (en) | 1987-04-15 |
| JPH0325329B2 JPH0325329B2 (en) | 1991-04-05 |
Family
ID=16794501
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP22320985A Granted JPS6282014A (en) | 1985-10-07 | 1985-10-07 | Plastic injection molding method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6282014A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5028244A (en) * | 1973-07-12 | 1975-03-22 | ||
| JPS54159464A (en) * | 1978-06-07 | 1979-12-17 | Seikou Jiyushi Kk | Metal mold for side gate type*both face producti plastic injection machine |
| JPS5686730A (en) * | 1979-12-17 | 1981-07-14 | Mitsubishi Monsanto Chem Co | Method and device for preparation of molded article |
-
1985
- 1985-10-07 JP JP22320985A patent/JPS6282014A/en active Granted
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5028244A (en) * | 1973-07-12 | 1975-03-22 | ||
| JPS54159464A (en) * | 1978-06-07 | 1979-12-17 | Seikou Jiyushi Kk | Metal mold for side gate type*both face producti plastic injection machine |
| JPS5686730A (en) * | 1979-12-17 | 1981-07-14 | Mitsubishi Monsanto Chem Co | Method and device for preparation of molded article |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0325329B2 (en) | 1991-04-05 |
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