JPH047114A - Injection mold - Google Patents
Injection moldInfo
- Publication number
- JPH047114A JPH047114A JP10936490A JP10936490A JPH047114A JP H047114 A JPH047114 A JP H047114A JP 10936490 A JP10936490 A JP 10936490A JP 10936490 A JP10936490 A JP 10936490A JP H047114 A JPH047114 A JP H047114A
- Authority
- JP
- Japan
- Prior art keywords
- core
- wedge
- shaped member
- replacement
- replacement core
- 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
- 238000002347 injection Methods 0.000 title claims abstract description 14
- 239000007924 injection Substances 0.000 title claims abstract description 14
- 239000011347 resin Substances 0.000 abstract description 5
- 229920005989 resin Polymers 0.000 abstract description 5
- 238000001746 injection moulding Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 1
- 238000000465 moulding 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
- B29C45/26—Moulds
- B29C45/2673—Moulds with exchangeable mould parts, e.g. cassette moulds
- B29C45/2675—Mounting of exchangeable mould inserts
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding 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、差換コアの交換により型形状を部分的に変更
することができるようになった射出成形用金型に関する
。DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to an injection mold in which the shape of the mold can be partially changed by replacing an exchangeable core.
〈従来の技術〉
プラスチック材料の成形に使用される射出成形用金型の
一種として、型形状を部分的に変更可能なものが公知で
ある。従来のこの種の金型を第３図を参照しつつ説明す
る。<Prior Art> As a type of injection molding die used for molding plastic materials, one in which the shape of the die can be partially changed is known. A conventional mold of this type will be explained with reference to FIG.
かかる金型は、凸部１１が形成された雄型１０と、前記
凸部１１に対応するキャビティ部２１が設けられた雌型
２０との組み合わせからなり、凸部１１とキャビティ部
２１との間が、溶融樹脂が注入されるキャビティ４０と
なっている。雌型２０は射出成形機の固定側に取り付け
られ、雄型１０は可動側に取り付けられる。This mold consists of a combination of a male die 10 in which a convex part 11 is formed and a female die 20 in which a cavity part 21 corresponding to the convex part 11 is provided, and between the convex part 11 and the cavity part 21. is a cavity 40 into which molten resin is injected. The female die 20 is attached to the fixed side of the injection molding machine, and the male die 10 is attached to the movable side.
キャビティ部２１には、溶融樹脂の注入孔たるスプルー
２２が開口するとともに、差換コア３０が取り付けられ
るコア取付部２３が設けられている。かかるコア取付部
２３に取り付けられる差換コア３０は、雌型２０の背面
側から貫通させられたボルト８０によって固定されてい
る。従って、差換コア３０を適宜交換することによって
、キャビティ４０の型形状を変更することができるので
ある。The cavity portion 21 is provided with a sprue 22 that is an injection hole for molten resin and a core attachment portion 23 to which a replacement core 30 is attached. The replacement core 30 attached to the core attachment part 23 is fixed by a bolt 80 passed through the female die 20 from the back side. Therefore, by appropriately replacing the replacement core 30, the mold shape of the cavity 40 can be changed.
かかる雄型１０及び雌型２０を閉し、キャビティ３０に
スプルー２２を介して溶融樹脂を注入すると、キャビテ
ィ４０の型形状に対応した成形品が製造されるようにな
っている。When the male mold 10 and the female mold 20 are closed and molten resin is injected into the cavity 30 through the sprue 22, a molded product corresponding to the mold shape of the cavity 40 is manufactured.
〈発明が解決しようとする課題〉
かかる射出成形用金型では、差換コアのみを交換するこ
とで、金型全体を交換することなくかなりの自由度で成
形品の形状を変更することができる。<Problem to be solved by the invention> In such an injection mold, by replacing only the replacement core, the shape of the molded product can be changed with a considerable degree of freedom without replacing the entire mold. .
しかしながら、差換コアは雌型の背面側から貫通された
ボルトでコア取付部に固定されているので、差換コアの
交換は射出成形機の固定側から雌型を取り外してから行
わなければならない。この作業は、熟練した者でも最低
３０分以上かかる。However, since the replacement core is fixed to the core mounting part with a bolt that penetrates from the back side of the female mold, the replacement core must be replaced after removing the female mold from the fixed side of the injection molding machine. . This work takes at least 30 minutes even for an experienced person.
本発明は上記事情に鑑みて創案されたもので、差換コア
を容易に交換することができる射出成形用金型を提供す
ることを目的としている。The present invention was devised in view of the above circumstances, and an object of the present invention is to provide an injection molding die whose replacement core can be easily replaced.
〈課題を解決するための手段〉
本発明に係る射出成形用金型は、雄型及び雌型の少なく
とも一方に設けられたコア取付部に取り付けられた差換
コアと、この差換コアをコア取付部から取り外すくさび
型部材と、このくさび型部材をコア取付部内において差
換コアの取外方向と直交する方向に移動させるくさび型
部材移動手段と、前記差換コアをコア取付部内で固定す
るコア固定手段とを備えており、くさび型部材のテーパ
面が差換コアに当接し、くさび型部材移動手段によるく
さび型部材の移動に伴って差換コアがコア取付部から取
り外されるように構成されている。<Means for Solving the Problems> The injection mold according to the present invention includes a replacement core attached to a core attachment part provided on at least one of a male mold and a female mold, and a replacement core attached to a core attachment part provided on at least one of a male mold and a female mold. a wedge-shaped member to be removed from the mounting portion; a wedge-shaped member moving means for moving the wedge-shaped member within the core mounting portion in a direction perpendicular to the removal direction of the replacement core; and a wedge-shaped member moving means for fixing the replacement core within the core mounting portion. and core fixing means, the tapered surface of the wedge-shaped member contacts the replacement core, and the replacement core is removed from the core attachment portion as the wedge-shaped member is moved by the wedge-shaped member moving means. has been done.
〈作用〉 コア固定手段による差換コアの固定を解除する。<Effect> The replacement core is released from being fixed by the core fixing means.
次に、くさび型部材移動手段によって、コア取付部の内
部でくさび型部材を移動させる。すると、くさび型部材
のテーパ面は差換コアに当接しているので、くさび型部
材の移動に伴って差換コアはコア取付部から外れる。Next, the wedge-shaped member is moved inside the core mounting portion by the wedge-shaped member moving means. Then, since the tapered surface of the wedge-shaped member is in contact with the replacement core, the replacement core is removed from the core mounting portion as the wedge-shaped member moves.
〈実施例〉
以下、図面を参照して本発明に係る一実施例を説明する
。<Example> Hereinafter, an example according to the present invention will be described with reference to the drawings.
第１図は本発明の一実施例に係る射出成形用金型の概略
的断面図、第２図は差換コアの取り外しを説明する断面
図である。FIG. 1 is a schematic sectional view of an injection mold according to an embodiment of the present invention, and FIG. 2 is a sectional view illustrating removal of a replacement core.
本実施例に係る射出成形用金型は、雌型２０に設けられ
たコア取付部２３に取り付けられた差換コア３０と、こ
の差換コア３０をコア取付部２３から取り外すくさび型
部材５０と、このくさび型部材５０をコア取付部２３内
において差換コア３０の取外方向と直交する方向に移動
させるくさび型部材移動手段たる移動用ボルト６０と、
前記差換コア３０をコア取付部２３内で固定するコア固
定手段たる固定用ボルト７０を有している。The injection mold according to this embodiment includes a replacement core 30 attached to a core attachment part 23 provided in a female mold 20, and a wedge-shaped member 50 for removing this replacement core 30 from the core attachment part 23. , a moving bolt 60 serving as a wedge-shaped member moving means for moving this wedge-shaped member 50 within the core mounting portion 23 in a direction perpendicular to the removal direction of the replacement core 30;
A fixing bolt 70 is provided as a core fixing means for fixing the replacement core 30 within the core mounting portion 23.
雌型２０には、雄型１０の凸部１１に対応したキャビテ
ィ部２１が凹設されている。すなわち、雄型１０と雌型
２０とを組み合わせると凸部１１とキャビティ部２１と
の間がキャビティ４０となるのである。かかるキャビテ
ィ部２１には、溶融樹脂をキャビティ４０に注入するた
めのスプルー２２と、差換コア３０が取り付けられるコ
ア取付部２３とが開設されている。コア取付部２３には
、前記スプルー２２とは直交する方向から、すなわち雌
型２０の側方から２本の貫通孔２３１．２３２が並行し
て穿設されている。A cavity portion 21 corresponding to the convex portion 11 of the male mold 10 is provided in the female mold 20 . That is, when the male die 10 and the female die 20 are combined, a cavity 40 is formed between the convex portion 11 and the cavity portion 21. The cavity portion 21 is provided with a sprue 22 for injecting molten resin into the cavity 40 and a core attachment portion 23 to which the replacement core 30 is attached. Two through holes 231 and 232 are bored in the core attachment part 23 in parallel from the direction perpendicular to the sprue 22, that is, from the side of the female mold 20.
前記コア取付部２３に取り付けられる差換コア３０は、
コア取付部２３に露出する露出面３１こそ成形品の形状
に応じて各種形状のものがあるが、裏面側はどの差換コ
ア３０でも同一形状に設定されている。The replacement core 30 attached to the core attachment part 23 is
The exposed surface 31 exposed to the core mounting portion 23 has various shapes depending on the shape of the molded product, but the back surface side is set to have the same shape in all replacement cores 30.
すなわち、すべての差換コア３０の裏面側には、コア取
付部２３の側壁に沿った突出部３２が形成されているの
である。また、かかる差換コア３０には、前記貫通孔２
３２に挿通された固定用ボルト７０が螺合される雌ネジ
部３３が形成されている。That is, on the back side of all the replacement cores 30, a protrusion 32 is formed along the side wall of the core attachment part 23. In addition, the replacement core 30 has the through hole 2.
A female threaded portion 33 is formed into which a fixing bolt 70 inserted through the portion 32 is screwed.
また、差換コア３０を取り外すためのくさび型部材５０
は、コア取付部２３の内部で移動可能なようにコア取付
部２３より小さく形成されており、その１面はテーパ面
５１としで形成されている。このテーパ面５１は、前記
差換コア３０の突出部３２に当接するように設定されて
いる。しかも、当該くさび型部材５０には、前記貫通孔
２３１に挿通された移動用ボルト６０が連結されている
。この移動用ボルト６０は、前記貫通孔２３１の開口部
に設けられたナツト６１に貫通螺合されているので、回
転させるとくさび型部材５０がコア取付部２３の内部で
移動するようになっている。Also, a wedge-shaped member 50 for removing the replacement core 30
is formed smaller than the core attachment part 23 so as to be movable inside the core attachment part 23, and one surface thereof is formed as a tapered surface 51. This tapered surface 51 is set so as to come into contact with the protrusion 32 of the replacement core 30. Moreover, a moving bolt 60 inserted into the through hole 231 is connected to the wedge-shaped member 50. This moving bolt 60 is threaded through a nut 61 provided at the opening of the through hole 231, so that when rotated, the wedge-shaped member 50 moves inside the core mounting portion 23. There is.
次に、上記射出成形用金型における差換コア３０の交換
について説明する。Next, replacement of the replacement core 30 in the injection mold will be described.
雌型２０を射出成形機の固定側に取り付けたまま、固定
用ボルト７０による差換コア３０の固定を解除する。While the female mold 20 is still attached to the fixed side of the injection molding machine, the fixing of the replacement core 30 by the fixing bolts 70 is released.
次に、移動用ボルト６０を回転させ、コア取付部２３の
内部でくさび型部材５０を第２図（ａ）に示す矢印Ａ方
向に移動させる。すると、くさび型部材５０のテーパ面
５１は差換コア３０の突出部３２に当接しているので、
くさび型部材５０の移動に伴って差換コア３０はコア取
付部２３から外れる（第２図（ｂ）参照）。Next, the moving bolt 60 is rotated to move the wedge-shaped member 50 inside the core mounting portion 23 in the direction of arrow A shown in FIG. 2(a). Then, since the tapered surface 51 of the wedge-shaped member 50 is in contact with the protrusion 32 of the replacement core 30,
As the wedge-shaped member 50 moves, the replacement core 30 comes off from the core attachment part 23 (see FIG. 2(b)).
差換コア３０がコア取付部２３から外れたならば、くさ
び型部材５０を元の位置に戻し、交換すべき差換コア３
０をコア取付部２３に取り付け、固定用ボルト７０で固
定する。Once the replacement core 30 is removed from the core attachment part 23, return the wedge-shaped member 50 to its original position and remove the replacement core 3 to be replaced.
0 to the core attachment part 23 and fixed with a fixing bolt 70.
なお、上記実施例では雌型２０に差換コア３ｏを取り付
けるとして説明したが、本発明がこれに限定されるわけ
ではなく、雄型１ｏに差換コア３ｏを取り付けるように
してもよい。In the above embodiment, the replacement core 3o is attached to the female mold 20, but the present invention is not limited to this, and the replacement core 3o may be attached to the male mold 1o.
〈発明の効果〉
本発明に係る射出成形用金型は、雄型及び雌型の少なく
とも一方に設けられたコア取付部に取り付けられた差換
コアと、この差換コアをコア取付部から取り外すくさび
型部材と、このくさび型部材をコア取付部内において差
換コアの取外方向と直交する方向に移動させるくさび型
部材移動手段と、前記差換コアをコア取付部内で固定す
るコア固定手段とを備えており、くさび型部材のテーパ
面が差換コアに当接し、くさび型部材移動手段によるく
さび型部材の移動に伴って差換コアがコア取付部から取
り外されるように構成されているので、従来のように金
型を射出成形機から取り外すことなく、容易に差換コア
の交換を行うことができる。<Effects of the Invention> The injection mold according to the present invention includes a replacement core attached to a core attachment part provided on at least one of the male mold and the female mold, and a replacement core that is removed from the core attachment part. a wedge-shaped member; a wedge-shaped member moving means for moving the wedge-shaped member in a direction perpendicular to a direction in which the replacement core is removed within the core mounting portion; and a core fixing means for fixing the replacement core within the core mounting portion; The tapered surface of the wedge-shaped member is in contact with the replacement core, and the replacement core is removed from the core mounting portion as the wedge-shaped member is moved by the wedge-shaped member moving means. , the replacement core can be easily replaced without removing the mold from the injection molding machine as in the conventional case.
第１図は本発明の一実施例に係る射出成形用金型の概略
的断面図、第２図は差換コアの取り外しを説明する断面
図、第３図は従来の射出成形用金型の概略的断面図であ
る。
１０・・・雄型、２０・・・雌型、２３・・・コア取付
部、３０・・・差換コア、５０・・・くさび型部材、５
１・・・テーパ面、６０・・・移動用ボルト（＜さび型
部材移動手段）、７０・・・固定用ボルト （コア固定
手段）。Fig. 1 is a schematic sectional view of an injection mold according to an embodiment of the present invention, Fig. 2 is a sectional view illustrating removal of a replacement core, and Fig. 3 is a schematic sectional view of a conventional injection mold. It is a schematic cross-sectional view. DESCRIPTION OF SYMBOLS 10... Male type, 20... Female type, 23... Core attachment part, 30... Replacement core, 50... Wedge-shaped member, 5
DESCRIPTION OF SYMBOLS 1... Tapered surface, 60... Moving bolt (<rust-shaped member moving means), 70... Fixing bolt (core fixing means).
Claims (1)
取付部に取り付けられた差換コアと、この差換コアをコ
ア取付部から取り外すくさび型部材と、このくさび型部
材をコア取付部内において差換コアの取外方向と直交す
る方向に移動させるくさび型部材移動手段と、前記差換
コアをコア取付部内で固定するコア固定手段とを具備し
ており、くさぴ型部材のテーパ面が差換コアに当接し、
くさび型部材移動手段によるくさび型部材の移動に伴っ
て差換コアがコア取付部から取り外されることを特徴と
する射出成形用金型。(1) A replacement core attached to a core attachment part provided on at least one of the male and female molds, a wedge-shaped member for removing the replacement core from the core attachment part, and a wedge-shaped member for removing the replacement core from the core attachment part. a wedge-shaped member moving means for moving the replacement core in a direction perpendicular to the direction in which the replacement core is removed; and a core fixing means for fixing the replacement core within the core attachment part; comes into contact with the replacement core,
An injection mold characterized in that a replacement core is removed from a core attachment part as the wedge-shaped member is moved by a wedge-shaped member moving means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10936490A JPH047114A (en) | 1990-04-24 | 1990-04-24 | Injection mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10936490A JPH047114A (en) | 1990-04-24 | 1990-04-24 | Injection mold |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH047114A true JPH047114A (en) | 1992-01-10 |
Family
ID=14508360
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10936490A Pending JPH047114A (en) | 1990-04-24 | 1990-04-24 | Injection mold |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH047114A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1147873A2 (en) * | 2000-04-17 | 2001-10-24 | Christof Glaab | Stamp member specially for use in machine tools for injection molding, injection compression molding or the like of moulding materials |
| WO2004035290A1 (en) * | 2002-10-18 | 2004-04-29 | Injectnotech Inc. | Interchangeable mold insert system |
-
1990
- 1990-04-24 JP JP10936490A patent/JPH047114A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1147873A2 (en) * | 2000-04-17 | 2001-10-24 | Christof Glaab | Stamp member specially for use in machine tools for injection molding, injection compression molding or the like of moulding materials |
| EP1147873A3 (en) * | 2000-04-17 | 2002-03-20 | Christof Glaab | Stamp member specially for use in machine tools for injection molding, injection compression molding or the like of moulding materials |
| WO2004035290A1 (en) * | 2002-10-18 | 2004-04-29 | Injectnotech Inc. | Interchangeable mold insert system |
| US7291000B2 (en) | 2002-10-18 | 2007-11-06 | Injectnotech, Inc. | Interchangeable mold insert system |
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