JPH0522564B2 - - Google Patents
Info
- Publication number
- JPH0522564B2 JPH0522564B2 JP24516784A JP24516784A JPH0522564B2 JP H0522564 B2 JPH0522564 B2 JP H0522564B2 JP 24516784 A JP24516784 A JP 24516784A JP 24516784 A JP24516784 A JP 24516784A JP H0522564 B2 JPH0522564 B2 JP H0522564B2
- Authority
- JP
- Japan
- Prior art keywords
- undercut
- mold
- cross
- taken along
- main body
- 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
- 238000000034 method Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000004519 manufacturing process Methods 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
- B29C45/40—Removing or ejecting moulded articles
- B29C45/44—Removing or ejecting moulded articles for undercut articles
- B29C45/4435—Removing or ejecting moulded articles for undercut articles using inclined, tiltable or flexible undercut forming elements driven by the ejector means
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、射出成形金型において、成形品に有
する２方向のアンダーカツト部分を金型より離型
するためのアンダーカツト処理装置に関するもの
である。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an undercut treatment device for releasing undercut portions in two directions of a molded product from the mold in an injection mold.
従来例の構成とその問題点
従来のアンダーカツト処理装置は、第１図にそ
の具体構造を示すように、成形品１０に有するア
ンダーカツトの部分１１が一方向のものしか処理
が出来ないし、箱型の成形品１０の内側の端面に
近い所にある場合、第２図に示すように金型の強
度や摺動などの製作上の面から、端面を含めた範
囲でアンダーカツト処理装置１２を作らなければ
ならず、そのためアンダーカツト処理装置に成形
品の収縮で内側に引張力が作用し、前記アンダー
カツト処理装置の摺動が困難になつたり破損が起
こる。また、成形品の離型が困難などの問題があ
つた。なお図中矢印Ｗ方向は成形品の収縮による
引張力の方向である。Structure of the conventional example and its problems As the specific structure of the conventional undercut processing apparatus is shown in FIG. If the undercut treatment device 12 is located close to the inner end face of the molded product 10 in the mold, the undercut treatment device 12 should be removed within the range including the end face from the viewpoint of production such as the strength and sliding of the mold, as shown in Fig. 2. Therefore, a tensile force acts on the undercut treatment device inward due to shrinkage of the molded product, making it difficult to slide the undercut treatment device or causing damage. Additionally, there were problems such as difficulty in releasing the molded product. Note that the direction of arrow W in the figure is the direction of tensile force due to shrinkage of the molded product.
発明の目的
本発明は、上記従来の欠点を解消するものであ
り、成形品のアンダーカツト処理を容易にするた
めのものである。OBJECTS OF THE INVENTION The present invention solves the above-mentioned conventional drawbacks and facilitates undercut treatment of molded products.
発明の構成
本発明は、型開き方向とは垂直な平面で、かつ
各々が垂直な軸を第１軸及び第２軸と設定し、こ
の両軸に対し傾斜して設けられ、型開き時突出し
プレート内を前記平面上に移動可能な構成であ
り、１方向のアンダーカツトを処理すると共に、
前記アンダーカツトと垂直方向にあるアンダーカ
ツトを同時に処理が行え、金型の摺動を容易にし
たり、また、ビンの破損が起きないようにした。
また、成形品の離型が容易に出来きわめて有利で
ある。Structure of the Invention The present invention has a first axis and a second axis which are a plane perpendicular to the mold opening direction and which are perpendicular to each other. It is configured to be movable within the plate on the plane, and processes undercuts in one direction.
The above-mentioned undercut and the vertical undercut can be treated at the same time, making it easier to slide the mold and preventing damage to the bottle.
Moreover, the molded product can be easily released from the mold, which is very advantageous.
実施例の説明
以下に、本発明の一実施例を図により説明す
る。第３図は金型設定状態（型閉め時）を示し、
１は金型に内蔵したアンダーカツト処理装置の本
体、２は本体に２方向加工されたアンダーカツト
部分を示す。断面Ａ−Ａに示すような構造は従来
のアンダーカツト処理装置と変らず本体１が、金
型本体に設定されたガイド部３，４に上、下に摺
動する。本体１に固定されたツバ部８が、上部突
出しプレート５にガイド設定され、下部突出プレ
ート６の面を左、右方向に摺動する。断面Ｂ−Ｂ
が従来の構造と違い、本実施例の特徴を示し、本
体１の形状には、ある突出し寸法９まで突出しプ
レートを突出したときからアンダーカツト部分２
を処理するために処理ガイド部７にｂの突出し傾
れ寸法が設定されている。上部突出しプレート５
にガイド設定された本体１のツバ部８には本体１
がアンダーカツト処理するために傾れるための逃
し寸法ｃとｄが設けられている。DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. Figure 3 shows the mold setting state (when the mold is closed).
Reference numeral 1 indicates the main body of an undercut processing device built into the mold, and reference numeral 2 indicates an undercut portion processed in two directions on the main body. The structure shown in cross section A-A is the same as that of a conventional undercut processing device, and the main body 1 slides upward and downward on guide portions 3 and 4 set in the mold main body. A collar portion 8 fixed to the main body 1 is guided by the upper protruding plate 5 and slides on the surface of the lower protruding plate 6 in left and right directions. Cross section B-B
is different from the conventional structure, and shows the characteristics of this embodiment.
In order to process this, a protruding inclination dimension b is set in the processing guide section 7. Upper protruding plate 5
The body 1 is attached to the collar 8 of the body 1 which is set as a guide.
Relief dimensions c and d are provided for tilting for undercut treatment.
第４図に突出しプレートを突出しストロークい
つぱいに突出したときの図面を示している。断面
Ａ−Ａで本体１は突出しに従つて矢印Ｘ方向に摺
動し、成形品から離型していきアンダーカツト部
２を処理していく。断面Ｂ−Ｂでツバ部８のポイ
ントＥは動かないが、本体１は突出し寸法ａの突
出しをかけられたときからＹ方向に傾れてゆきｂ
の突出し寸法設定値によりアンダーカツト部２を
処理できるものである。 FIG. 4 shows a drawing when the ejector plate is ejected to its full stroke. In the cross section AA, the main body 1 slides in the direction of the arrow X as it protrudes, and is released from the molded product to process the undercut portion 2. Point E of the collar 8 does not move in the cross section B-B, but the main body 1 is tilted in the Y direction from when the protrusion of the protrusion dimension a is applied b.
The undercut portion 2 can be treated with the set value of the protrusion dimension.
発明の効果
このように本発明は射出成形金型のアンダーカ
ツト処理装置を１方向だけのものだけではなく、
２方向のアンダーカツトを処理するためのもので
あるため、金型で起きるアンダーカツト処理装置
本体の摺動不良や破損の防止また、成形品の離型
が容易になつたり、２方向のアンダーカツトが可
能なため、商品設計上の利点があるという特徴も
奏している。Effects of the Invention As described above, the present invention provides an undercut treatment device for injection molding not only in one direction.
Because it is designed to treat undercuts in two directions, it prevents sliding defects and damage to the undercut treatment device that occurs in the mold, makes it easier to release molded products, and prevents undercuts in two directions. Because it is possible to do this, it also has advantages in terms of product design.
第１図イ，ロ，ハは従来のアンダーカツト処理
装置の平面図、Ｂ−Ｂ線切断の断面図、Ａ−Ａ線
切断の断面図、第２図イ，ロ，ハは同従来のアン
ダーカツト処理装置の平面図、Ｂ−Ｂ線切断の断
面図、Ａ−Ａ線切断の断面図、第３図イ，ロ，ハ
は本発明の一実施例におけるアンダーカツト処理
装置の平面図、Ｂ−Ｂ線切断の断面図、Ａ−Ａ線
切断の断面図、第４図イ，ロは突出しプレートが
移動したときの第３図イにおけるＢ−Ｂ線切断の
断面図及びＡ−Ａ線切断の断面図である。
１……本体、３，４……ガイド部、５……上部
突出しプレート。
Figure 1 A, B, and C are a plan view of the conventional undercut processing device, a cross-sectional view taken along the line B-B, and a cross-sectional view taken along the A-A line. A plan view of the cut processing device, a cross-sectional view taken along the line B-B, a cross-sectional view taken along the line A-A, and FIGS. - Cross-sectional view taken along line B, cross-sectional view taken along line A-A, Figure 4 A and B are cross-sectional views taken along line B-B in Figure 3 I when the ejector plate moves, and cross-sectional view taken along line A-A. FIG. 1... Main body, 3, 4... Guide portion, 5... Upper protruding plate.
Claims (1)
直な軸を第１軸及び第２軸と設定し、第１軸と第
２軸に対し所定の角を有して傾斜して設けられ、
型開き時、突出しプレート内を前記平面上に移動
可能に構成された２方向アンダーカツト処理装
置。1 The plane is perpendicular to the mold opening direction, and the axes that are perpendicular to each other are set as the first axis and the second axis, and the plane is inclined at a predetermined angle with respect to the first axis and the second axis. ,
A two-way undercut processing device configured to be movable within the protrusion plate on the plane when the mold is opened.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24516784A JPS61121920A (en) | 1984-11-20 | 1984-11-20 | Bidirectional undercut processing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24516784A JPS61121920A (en) | 1984-11-20 | 1984-11-20 | Bidirectional undercut processing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61121920A JPS61121920A (en) | 1986-06-09 |
| JPH0522564B2 true JPH0522564B2 (en) | 1993-03-30 |
Family
ID=17129602
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24516784A Granted JPS61121920A (en) | 1984-11-20 | 1984-11-20 | Bidirectional undercut processing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61121920A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19507009C2 (en) * | 1995-02-28 | 1997-03-13 | Johannes Ludwig Foellmer | Device for demoulding injection molded parts |
| KR100846850B1 (en) | 2007-04-17 | 2008-07-17 | 한국단자공업 주식회사 | A discharging-device of mold assembly |
| KR100924926B1 (en) * | 2007-10-29 | 2009-11-12 | 주식회사 신한금형 | Undercut processing die base on angler cam and angler block |
| CN109551720B (en) * | 2018-11-05 | 2020-05-05 | 浙江工商职业技术学院 | Double-inner-side core-pulling mechanism of movable die driven fixed die |
-
1984
- 1984-11-20 JP JP24516784A patent/JPS61121920A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61121920A (en) | 1986-06-09 |
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