JPH0469052B2 - - Google Patents
Info
- Publication number
- JPH0469052B2 JPH0469052B2 JP58201607A JP20160783A JPH0469052B2 JP H0469052 B2 JPH0469052 B2 JP H0469052B2 JP 58201607 A JP58201607 A JP 58201607A JP 20160783 A JP20160783 A JP 20160783A JP H0469052 B2 JPH0469052 B2 JP H0469052B2
- Authority
- JP
- Japan
- Prior art keywords
- slide core
- molded product
- core
- slide
- mold
- 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
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/40—Removing or ejecting moulded articles
- B29C45/44—Removing or ejecting moulded articles for undercut articles
- B29C45/4407—Removing or ejecting moulded articles for undercut articles by flexible movement of undercut portions of the articles
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、金型開閉と異方向に２方向以上の離
型が必要な窪みを併有する成形品を離型するため
の金型装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a mold device for opening and closing a mold and releasing a molded product having a recess that requires mold release in two or more directions in different directions. be.
従来例の構成とその問題点
従来の金型装置は第１図にその具体構成を示す
ように、アンダーカツト部４をスライドコア５で
矢印Ｘ方向に引張り、成形品３をたわませてアン
ダーカツト部４がコア本体２より抜けた後、成形
品３を金型開閉方向（矢印Ｙ方向）に突出してい
た。しかし、アンダーカツト部に第２図に示すよ
うに金型開閉方向と異方向に離型の必要な窪みが
あると、この窪みを形成するコア、およびピンが
邪魔になりアンダーカツト部を引張り成形品をた
わませての離型ができなかつた。Structure of the conventional example and its problems As shown in FIG. 1, the conventional mold device pulls the undercut portion 4 in the direction of the arrow X with the slide core 5, bends the molded product 3, and forms the undercut. After the cut portion 4 was removed from the core body 2, the molded product 3 was projected in the mold opening/closing direction (arrow Y direction). However, if the undercut part has a depression that requires release from the mold in a direction different from the mold opening/closing direction, as shown in Figure 2, the core and pins that form this depression will get in the way, and the undercut part will not be able to be tension-molded. It was not possible to release the product by bending it.
発明の目的
本発明は上記の窪みを有するアンダーカツトを
処理するためのものである。OBJECTS OF THE INVENTION The present invention is for treating undercuts having the above-mentioned depressions.
発明の構成
本発明は、型開き開始と同時に一方向の窪を離
型するスライドコアと、このスライドコア摺動よ
り適時遅れて摺動し、他の方向に離型すべき部分
を成形品をたわませる事によつて離型可能とする
スライドコアと、これらを作動させる機構とから
構成されている。Structure of the Invention The present invention has a slide core that releases the recess in one direction at the same time as the opening of the mold starts, and a slide core that slides at a timely delay after the slide core slides to release the molded product in the other direction. It consists of a slide core that can be released from the mold by bending, and a mechanism that operates these.
実施例の説明
以下に本発明の第１の実施例を第３〜６図にも
とづいて説明する。図において、６はキヤビテ
イ、７はコア本体、８は成形品、９は成形品８の
アンダーカツト部、１０はアンダーカツト部９に
設けられた窪み、１１は窪み１０を形成するスラ
イドコア、１２はスライドコア１１を摺動させる
溝を設けたスライドブロツク、１３はスライドコ
ア１１の摺動に適時遅れて摺動しアンダーカツト
部９を矢印Ｘ方向に引張り成形品８をたわませる
スライドコア、１４はスライドコア１３の成形時
における位置を固定し、かつスライドコア１１の
初期摺動時にスライドコア１３を固定する固定ピ
ン、１５は固定ピン１４を受ける穴、１６はスプ
リング、１７はスライドコア１１，１３の摺動の
タイミングを決めるためにスライドブロツク１２
に固定されたストツプボルト、１８はスライドコ
ア１３に設けられたストツプボルト１７の摺動
溝、１９はスライドブロツク１２を作動させるシ
リンダーである。DESCRIPTION OF EMBODIMENTS A first embodiment of the present invention will be described below with reference to FIGS. 3 to 6. In the figure, 6 is a cavity, 7 is a core body, 8 is a molded product, 9 is an undercut portion of the molded product 8, 10 is a recess provided in the undercut portion 9, 11 is a slide core forming the recess 10, 12 13 is a slide block provided with a groove on which the slide core 11 slides; 13 is a slide core that slides with a timely delay to the sliding of the slide core 11 and pulls the undercut portion 9 in the direction of the arrow X to bend the molded product 8; 14 is a fixing pin that fixes the position of the slide core 13 during molding and also fixes the slide core 13 during initial sliding of the slide core 11; 15 is a hole for receiving the fixing pin 14; 16 is a spring; 17 is a slide core 11 , 13 to determine the sliding timing of slide block 12.
18 is a sliding groove for the stop bolt 17 provided in the slide core 13, and 19 is a cylinder for operating the slide block 12.
成形後型開き開始と同時に、シリンダー１９に
よりスライドブロツク１２を矢印Ｘ方向に摺動さ
せる。スライドコア１１はスライドブロツク１２
に適当な角度をもつて設けられた溝を摺つて矢印
Ｚ方向に摺動し、窪み１０より抜ける。次に、ス
ライドコア１３が摺動しないように穴１５に挿入
していた固定ピンが、型開きによつて抜ける。次
に、スライドブロツク１２に固定したストツプボ
ルト１７が摺動溝１８を摺動し終つてスライドコ
ア１３にぶつかり、これも矢印Ｘ方向に摺動を開
始する。スライドコア１３はアンダーカツト部９
を矢印Ｘ方向に引張り成形品８をたわませ、コア
本体７より抜く。その後、シリンダーによりスラ
イドブロツク１２を停止させ、成形品８を矢印Ｙ
方向に突出す。 Simultaneously with the start of mold opening after molding, the cylinder 19 slides the slide block 12 in the direction of arrow X. The slide core 11 is the slide block 12
It slides in the direction of arrow Z through a groove provided at an appropriate angle, and exits from the depression 10. Next, the fixing pin inserted into the hole 15 to prevent the slide core 13 from sliding is removed by opening the mold. Next, the stop bolt 17 fixed to the slide block 12 finishes sliding in the slide groove 18 and collides with the slide core 13, which also starts sliding in the direction of arrow X. The slide core 13 is the undercut part 9
is pulled in the direction of arrow X to bend the molded product 8 and pull it out from the core body 7. After that, the slide block 12 is stopped by the cylinder, and the molded product 8 is moved toward the arrow Y.
protrude in a direction.
次に本発明の第二の実施例を第７〜１０図にも
とづいて説明する。図において、２０はキヤビテ
イ、２１はコア本体、２２は成形品、２３は成形
品２２のアンダーカツト部、２４はアンダーカツ
ト部２３に設けられた窪み、２５は窪み２４を形
成するスライドコア、２６はスライドコア２５の
摺動に適時遅れて摺動しアンダーカツト部２３を
矢印Ｘ方向に引張り成形品２２をたわませるスラ
イドコア、２７はスライドコア２６の成形時にお
ける位置を固定し、かつスライドコア２５の初期
摺動時にスライドコア２６を固定する固定ピン、
２８は固定ピン２７を受ける穴、２９はスライド
コア２６に設けられたスライドコア２５の摺動
溝、３０はスライドコア２５を摺動させるシリン
ダーである。 Next, a second embodiment of the present invention will be described based on FIGS. 7 to 10. In the figure, 20 is a cavity, 21 is a core body, 22 is a molded product, 23 is an undercut portion of the molded product 22, 24 is a recess provided in the undercut portion 23, 25 is a slide core forming the recess 24, 26 27 is a slide core that slides after an appropriate delay in sliding of the slide core 25 and pulls the undercut portion 23 in the direction of the arrow X to bend the molded product 22; 27 fixes the position of the slide core 26 during molding; a fixing pin that fixes the slide core 26 during initial sliding of the core 25;
28 is a hole for receiving the fixing pin 27, 29 is a sliding groove for the slide core 25 provided in the slide core 26, and 30 is a cylinder on which the slide core 25 slides.
成形後型開き開始と同時にシリンダー３０によ
りスライドコア２５を矢印Ｘ方向に摺動させ、ア
ンダーカツト部２３に設けられた窪み２４を離型
する。次に、スライドコア２６の摺動を固定して
いた固定ピン２７が型開きにより穴２８より抜け
る。次に、スライドコア２５がスライドコア２６
にぶつかりスライドコア２６も矢印Ｘ方向に摺動
を開始する。スライドコア２６はアンダーカツト
部２３を矢印Ｘ方向に引張り成形品２２をたわま
せて、コア本体２１より抜く。その後、シリンダ
ーによりスライドコア２５を停止させ、成形品２
２を矢印Ｙ方向に突出す。 After molding, the slide core 25 is slid in the direction of the arrow X by the cylinder 30 at the same time as the mold opens, and the recess 24 provided in the undercut portion 23 is released from the mold. Next, the fixing pin 27 that fixed the sliding of the slide core 26 is removed from the hole 28 by opening the mold. Next, the slide core 25 is moved to the slide core 26.
The slide core 26 also starts sliding in the direction of the arrow X. The slide core 26 is pulled out from the core body 21 by pulling the undercut portion 23 in the direction of the arrow X, bending the molded product 22. After that, the slide core 25 is stopped by the cylinder, and the molded product 2
2 in the direction of arrow Y.
前記第一・二の実施例ではスライドコアの作動
をシリンダーにて行なつたが、フインガーピン等
によることも可能である。 In the first and second embodiments, the slide core is operated by a cylinder, but it is also possible to use a finger pin or the like.
発明の効果
以上のように本発明は、複数のスライドコアを
用いて、窪みのついた形状の離型を可能にした。Effects of the Invention As described above, the present invention makes it possible to release a recessed mold by using a plurality of slide cores.
第１図ａ，ｂは各々従来のアンダーカツト処理
を示した金型の要部断面図、第２図イ〜ヘは複雑
な形状をしたアンダーカツトを有した製品の断面
図、第３図は本発明の一実施例における金型装置
の断面図、第４図は成形時における金型装置の断
面図、第５図はスライドブロツクが摺動しピンが
アンダーカツトより抜けた状態の同断面図、第６
図はさらにスライドコアが摺動しアンダーカツト
がコア本体より抜けた状態を示した同断面図、第
７図は他の実施例における金型の断面図、第８図
は成形時における同断面図、第９図はスライドコ
アが摺動し窪みから離型した状態の同断面図、第
１０図はもう一つのスライドコアも摺動し、アン
ダーカツトがコア本体より抜けた状態の同断面図
である。
９，２３……アンダーカツト部、１０，２４…
…窪み、１１，１３，２５，２６……スライドコ
ア、１２……スライドブロツク、１４，２７……
固定ピン、１５，２８……穴、１７……ストツプ
ボルト、１８，１９……摺動溝、１６……スプリ
ング、１９，３０……シリンダー。
Figures 1a and b are cross-sectional views of the main parts of a mold showing conventional undercut processing, Figures 2a-f are cross-sectional views of a product with a complex-shaped undercut, and Figure 3 is A sectional view of a mold device according to an embodiment of the present invention, FIG. 4 is a sectional view of the mold device during molding, and FIG. 5 is a sectional view of the same with the slide block sliding and the pin coming out from the undercut. , 6th
The figure shows the same sectional view showing the slide core sliding further and the undercut coming out from the core body, Figure 7 is a sectional view of the mold in another embodiment, and Figure 8 is the same sectional view during molding. , Figure 9 is the same sectional view with the slide core sliding and released from the recess, and Figure 10 is the same sectional view with the other slide core also sliding and the undercut pulled out from the core body. be. 9, 23... Undercut part, 10, 24...
...Recess, 11,13,25,26...Slide core, 12...Slide block, 14,27...
Fixed pin, 15, 28... hole, 17... stop bolt, 18, 19... sliding groove, 16... spring, 19, 30... cylinder.
Claims (1)
形品のアンダカツト部を、その発生方向と逆方向
に押してたわませる第１のスライドコアと、前記
アンダカツト部に、前記成形品をたわませる方向
とは異なる方向に窪みを形成する第２のスライド
コアとからなり、前記第２のスライドコアを前記
窪みから離脱せしめるよう移動させる駆動手段
が、前記第２スライドコアに引続き、前記第１の
スライドコアを移動させ、前記成形品をたわませ
ることにより、前記成形品を前記コア本体より離
脱可能とする金型装置。1. A first slide core that pushes and bends an undercut portion of a molded product formed by a core body and a cavity in a direction opposite to the direction in which the undercut occurs, and a direction in which the molded product is bent by the undercut portion. a second slide core forming recesses in different directions, and a driving means for moving the second slide core to separate from the recess, the drive means moves the first slide core following the second slide core. A mold device that allows the molded product to be removed from the core body by moving the molded product and bending the molded product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58201607A JPS6092819A (en) | 1983-10-27 | 1983-10-27 | Molding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58201607A JPS6092819A (en) | 1983-10-27 | 1983-10-27 | Molding device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6092819A JPS6092819A (en) | 1985-05-24 |
| JPH0469052B2 true JPH0469052B2 (en) | 1992-11-05 |
Family
ID=16443857
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58201607A Granted JPS6092819A (en) | 1983-10-27 | 1983-10-27 | Molding device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6092819A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2019006074A (en) * | 2017-06-28 | 2019-01-17 | トヨタ自動車九州株式会社 | Injection molding mold, and injection molding method |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59142110A (en) * | 1983-02-03 | 1984-08-15 | Toyoda Gosei Co Ltd | Mold for molding item with undercut |
-
1983
- 1983-10-27 JP JP58201607A patent/JPS6092819A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6092819A (en) | 1985-05-24 |
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