JPH0644663Y2 - Injection mold - Google Patents
Injection moldInfo
- Publication number
- JPH0644663Y2 JPH0644663Y2 JP1989034038U JP3403889U JPH0644663Y2 JP H0644663 Y2 JPH0644663 Y2 JP H0644663Y2 JP 1989034038 U JP1989034038 U JP 1989034038U JP 3403889 U JP3403889 U JP 3403889U JP H0644663 Y2 JPH0644663 Y2 JP H0644663Y2
- Authority
- JP
- Japan
- Prior art keywords
- core
- hole
- replacement
- fitting member
- exchange
- 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 - Fee Related
Links
Landscapes
- Moulds For Moulding Plastics Or The Like (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Description
【考案の詳細な説明】 〈産業上の利用分野〉 本考案は差換コアの交換により型形状が部分的に変更で
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 field of application> The present invention relates to an injection molding die whose mold shape can be partially changed by replacing a replacement 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、型形状の局部変更が可能なものが公知であ
る。従来のこの種の金型を第５図を参照しつつ説明す
る。<Prior Art> As a kind of injection molding die used for molding a plastic material, there is known one in which a mold shape can be locally changed. A conventional mold of this type will be described with reference to FIG.
金型はコアと称される雄型10と、キャビティと称される
雌型20との組み合わせからなる。コア10およびキャビテ
ィ20は型締め装置の例えば固定側および可動側に夫々取
付けられている。コア本体11のキャビティ20に対向する
面には、凹状の差換コア取付部11aが形成されている。
差換コア取付部11aに嵌入された差換コア12は、コア10
の背面よりコア10を貫通させたボルト13によって差換コ
ア取付部11a内に固定されている。コア10とキャビティ2
0とを型締め装置により閉じた状態でキャビティ20のキ
ャビティ部21にスプール22よりプラスチック材料を注入
することにより、差換コア12の形状に対応した成形品が
製造されるようになっている。The mold comprises a combination of a male mold 10 called a core and a female mold 20 called a cavity. The core 10 and the cavity 20 are attached to, for example, the fixed side and the movable side of the mold clamping device, respectively. A concave replacement core attachment portion 11a is formed on the surface of the core body 11 facing the cavity 20.
The replacement core 12 fitted in the replacement core attachment portion 11a is the core 10
It is fixed in the replacement core attachment portion 11a by a bolt 13 penetrating the core 10 from the back surface of the. Core 10 and cavity 2
By injecting a plastic material from the spool 22 into the cavity portion 21 of the cavity 20 in a state where 0 and 0 are closed by the mold clamping device, a molded product corresponding to the shape of the exchange core 12 is manufactured.
〈考案が解決しようとする課題〉 このような従来の射出成形用金型では、差換コア12のみ
を交換すれば、コア10全体を交換しなくても、かなりの
自由度で型形状の変更が可能になる。しかし、差換コア
12の固定に用いられているボルト13の抜き取りが必要で
あり、そのために型締め装置の例えば固定側からコア10
を取り外す必要がある。この作業は時間がかかりこの種
の金型の機能を低下させる結果となっている。<Problems to be solved by the invention> In such a conventional injection molding die, if only the exchange core 12 is replaced, the mold shape can be changed with a great degree of freedom without replacing the entire core 10. Will be possible. But the replacement core
It is necessary to remove the bolts 13 used for fixing the cores 12, and therefore the core 10 from the fixed side of the mold clamping device, for example.
Need to be removed. This work is time consuming and results in a deterioration of the function of this type of mold.
また、プラスチック材料の流入を防ぐために、差換コア
取付部11aと差換コア12との間隔は0.01〜0.001mm程度に
設定されている。そのため、差換コア12を所定の深さま
で差換コア取付部11aに差し込むためには、木づち等で
差換コア12をたたき込まなければならず、差換コア12や
コア本体11を破損させるおそれがある。Further, in order to prevent the inflow of the plastic material, the gap between the exchange core attachment portion 11a and the exchange core 12 is set to about 0.01 to 0.001 mm. Therefore, in order to insert the exchange core 12 into the exchange core attachment portion 11a to a predetermined depth, the exchange core 12 must be struck with a wood hammer or the like, which damages the exchange core 12 or the core body 11. There is a risk.
本考案はこれらの問題を解決した差換コア12の交換が容
易で、しかも交換時に破損が生じる危険性の少ない射出
成形用金型を提供することを目的とする。An object of the present invention is to provide a mold for injection molding which solves these problems and which allows easy replacement of the replacement core 12 and has less risk of breakage during replacement.
〈課題を解決するための手段〉 本考案にかかる射出成形用金型は、コア本体に形成され
たコア収容部に差換コアが挿脱自在である射出成形用金
型であって、前記差換コアに前記コア収容部に対する挿
脱方向と直交する方向に貫通させるように形成した第１
の穴と、前記コア本体に前記第１の穴に連通するように
形成した第２の穴と、第１の穴及び第２の穴に嵌入され
る第１嵌入部材と、第１嵌入部材を前記差換コアととも
に前記コア本体に固定するための締結部材であって第１
嵌入部材の中央部に第１、第２の穴の方向と同じ方向に
貫通させるように形成した穴に通されるねじ部と、前記
コア本体におけるコア収容部の内壁上に形成しており前
記ねじ部の先端部と螺合されるねじ穴と、第１の穴とは
別に、前記差換コアに前記コア収容部に対する挿脱方向
と直交する方向に形成した第３の穴と、第２の穴とは別
に、前記コア本体に第３の穴に連通するように形成した
第４の穴と、第３の穴及び第４の穴に嵌入される第２嵌
入部材とを具備しており、且つ第１嵌入部材の先端部が
第１の穴に挿入されるに伴って前記差換コアを前記コア
収容部に位置決めさせるべく、第１嵌入部材の先端部及
び第１の穴の内面には第１テーパ面が形成されている一
方、第２嵌入部材の先端部が第４の穴を介して第３の穴
に挿入されるに伴って前記差換コアを前記コア収容部か
ら離脱させるべく、第３の穴には第２テーパ面が形成さ
れていることを特徴としている。<Means for Solving the Problems> An injection molding die according to the present invention is an injection molding die in which a replacement core can be inserted into and removed from a core accommodating portion formed in a core body. A first core formed so as to penetrate the replacement core in a direction orthogonal to the insertion / removal direction with respect to the core accommodating portion.
A second hole formed in the core body so as to communicate with the first hole, a first fitting member fitted into the first hole and the second hole, and a first fitting member. A fastening member for fixing the replacement core and the core body together with the replacement core;
A threaded portion that is inserted through a hole formed in the central portion of the fitting member so as to penetrate in the same direction as the first and second holes; and an inner wall of the core accommodating portion of the core body, In addition to the screw hole to be screwed with the tip end of the screw portion and the first hole, a third hole formed in the exchange core in a direction orthogonal to the insertion / removal direction with respect to the core accommodating portion, and a second hole In addition to the above holes, the core body is provided with a fourth hole formed to communicate with the third hole, and a second fitting member fitted into the third hole and the fourth hole. Also, in order to position the exchange core in the core accommodating portion as the tip end portion of the first fitting member is inserted into the first hole, the tip end portion of the first fitting member and the inner surface of the first hole are positioned. While the first tapered surface is formed, as the tip of the second fitting member is inserted into the third hole through the fourth hole, Wherein in order to disengage the Sa換 core from the core housing portion, the third hole is characterized in that it is formed a second tapered surface Te.
〈作用〉 まず、差換コアをコア本体に装着する場合について説明
する。差換コアをコア本体のコア収容部に挿入すると、
差換コアの第１の穴とコア本体の第２の穴とが連通す
る。この状態で、第１嵌入部材を第２の穴に差し込んで
嵌入すると、第１嵌入部材の先端部が差換コアの第１の
穴に挿入される。第１嵌入部材の先端部及び第１の穴の
内面には、第１テーパ面が形成されているので、そのく
さび作用により、第１嵌入部材の先端部が第１の穴に挿
入されるに伴って、差換コアが若干位置修正されてコア
収容部に位置決めされる。この状態で、ねじ部を第１嵌
入部材に形成された穴に通して締め付けると、その先端
部がねじ穴に螺合し、その結果、第１嵌入部材が差換コ
アとともにコア本体に固定される。<Operation> First, the case where the replacement core is attached to the core body will be described. When the replacement core is inserted into the core accommodating part of the core body,
The first hole of the exchange core communicates with the second hole of the core body. In this state, when the first fitting member is inserted into the second hole and fitted therein, the tip portion of the first fitting member is inserted into the first hole of the exchange core. Since the first tapered surface is formed on the distal end portion of the first fitting member and the inner surface of the first hole, the wedge action of the first tapered surface causes the distal end portion of the first fitting member to be inserted into the first hole. Accordingly, the position of the exchange core is slightly corrected and positioned in the core accommodating portion. In this state, when the threaded portion is passed through the hole formed in the first fitting member and tightened, the tip portion is screwed into the threaded hole, and as a result, the first fitting member is fixed to the core body together with the replacement core. It
次に、差換コアをコア本体から取り外す場合について説
明する。ねじ部を緩めて、これを第１嵌入部材の穴から
抜き、第１嵌入部材をコア本体から引き抜く。Next, a case where the replacement core is removed from the core body will be described. Loosen the screw part, pull out this from the hole of the first fitting member, and pull out the first fitting member from the core body.
この状態で、第２嵌入部材をコア本体の第４の穴に差し
込んで嵌入すると、第２嵌入部材の先端部が差換コアの
第３の穴に挿入される。第３の穴の内面には、第２テー
パ面が形成されているので、そのくさび作用により、第
１嵌入部材の先端部が第３の穴に挿入されるに伴って、
差換コアがコア収容部から離脱する方向に若干動く。こ
れで差換コアをコア収容部から容易に離脱させることが
できる。In this state, when the second insertion member is inserted and inserted into the fourth hole of the core body, the tip end portion of the second insertion member is inserted into the third hole of the exchange core. Since the second tapered surface is formed on the inner surface of the third hole, the wedge action of the second tapered surface causes the distal end portion of the first fitting member to be inserted into the third hole.
The replacement core slightly moves in the direction in which it is separated from the core housing. With this, the exchange core can be easily separated from the core accommodating portion.
〈実施例〉 以下、図面を参照して本考案にかかる一実施例を説明す
る。<Embodiment> An embodiment according to the present invention will be described below with reference to the drawings.
第１図は本考案にかかる射出成形用金型の断面図、第２
図はその差換コアの斜視図、第３図及び第４図は要部詳
細構造及び動作を示す断面図である。FIG. 1 is a sectional view of an injection molding die according to the present invention, and FIG.
The drawings are perspective views of the replacement core, and FIGS. 3 and 4 are sectional views showing the detailed structure and operation of the main parts.
図中100は射出成形用金型のコアであって、ここでは型
締め装置の固定側に連結されている。コア100のコア本
体120にはコア収容部である差換コア取付部12が形成さ
れており、ここに差換コア130が挿脱自在となってい
る。一方、図中200は射出成形用金型のキャビティであ
って、ここでは型締め装置の可動側に連結されている。
キャビティ200のキャビティ本体220には差換コア130に
対応した形状の窪みであるキャビティ部221aが形成され
ている。以下、詳細について説明する。In the figure, reference numeral 100 denotes a core of an injection molding die, which is connected to the fixed side of the mold clamping device here. The core body 120 of the core 100 is formed with a replacement core attachment portion 12 that is a core housing portion, and the replacement core 130 can be inserted and removed in the core body 120. On the other hand, reference numeral 200 in the drawing denotes a cavity of the injection molding die, which is connected to the movable side of the mold clamping device here.
The cavity main body 220 of the cavity 200 is provided with a cavity portion 221a having a shape corresponding to the exchange core 130. The details will be described below.
射出成形用金型のコア100は取付板110と、その表面に重
合されたコア本体120とを備えている。コア本体120のキ
ャビティ200に対向する対向面121には、凹状の差換コア
取付部122が形成されている。差換コア取付部122は対向
面121の中心と側縁との略中間に位置し、長方形の平面
形状を有する。差換コア取付部122とコア本体120の側面
123との間には、第２の穴である断面真円の丸孔124及び
第４の穴である角孔125が、差換コア130が差換コア取付
部122に挿脱される方向と直交する方向に貫通して形成
されている。角孔125は丸孔124よりも背面側に位置し、
その背面側の内側面125aは差換コア取付部122の底面122
aの面一になっている。A core 100 of an injection molding die includes a mounting plate 110 and a core body 120 superposed on the surface thereof. On the facing surface 121 of the core body 120 facing the cavity 200, a concave replacement core mounting portion 122 is formed. The replacement core mounting portion 122 is located approximately in the center between the center of the facing surface 121 and the side edge, and has a rectangular planar shape. Side surfaces of the replacement core mounting portion 122 and the core body 120
Between 123 and 123, a round hole 124 having a perfect circular cross section, which is a second hole, and a square hole 125, which is a fourth hole, are formed in the direction in which the exchange core 130 is inserted into and removed from the exchange core attachment portion 122. It is formed so as to penetrate in the orthogonal direction. The square hole 125 is located on the rear side of the round hole 124,
The inner surface 125a on the back side is the bottom surface 122 of the replacement core mounting portion 122.
It is flush with a.
差換コア取付部122に嵌着される差換コア130は、直方体
状のブロックからなり、差換コア取付部122との間に0.0
1〜0.001mm程度の隙間を生じるように設計されている。
差換コア130が差換コア取付部122に完全に嵌入した状態
で差換コア130とコア本体120との関係は次のようにな
る。The replacement core 130 fitted to the replacement core mounting portion 122 is made of a rectangular parallelepiped block, and has a space of 0.0 between the replacement core mounting portion 122 and the replacement core mounting portion 122.
It is designed to create a gap of about 1 to 0.001 mm.
The relationship between the replacement core 130 and the core body 120 when the replacement core 130 is completely fitted in the replacement core attachment portion 122 is as follows.
コア本体120の対向面121より突出する頭部131には、成
形すべき製品の形状の一部に応じた外形が与えられてい
る。また、コア本体120のうちでも、差換コア取付部122
内に嵌入される本体部には、第１の穴であるテーパ丸孔
132及び第３の穴であるテーパ溝133が形成されている。
テーパ丸孔132及びテーパ溝133は、差換コア130が差換
コア取付部122に挿脱される方向と直交する方向に形成
されている。テーパ丸孔132、テーパ溝133は、差換コア
130が差換コア取付部122に嵌着された状態で、丸孔12
4、角孔125に夫々連通するようになっている。テーパ丸
孔132は、コア本体120に設けた丸孔124と同軸で、コア
一端面側の丸孔124に合致する部分を起点として丸孔124
から離れるに従って漸次縮径する円錐状の第１テーパ面
132aを有する。第１テーパ面132aの先は同一内径の内周
面132bを経てコア他端面側に達する。差換コア130の他
端面に接する差換コア取付部122内側面には、丸孔124と
同軸の雌ねじ穴126が穿設されている。テーパ溝133は、
コア本体120に設けた角孔125に対応し、その底面とし
て、コア一端面側の角孔125に合致する部分を起点とし
てコア本体120の対向面121から離れる方向に傾斜する平
面状の第２テーパ面133aを有する。The head 131 protruding from the facing surface 121 of the core body 120 has an outer shape corresponding to a part of the shape of the product to be molded. In addition, in the core body 120, the replacement core mounting portion 122
The main body to be fitted inside has a tapered round hole which is the first hole.
132 and a tapered groove 133 that is a third hole are formed.
The tapered round hole 132 and the tapered groove 133 are formed in a direction orthogonal to a direction in which the exchange core 130 is inserted into and removed from the exchange core attachment portion 122. The tapered round hole 132 and the tapered groove 133 are interchangeable cores.
With the 130 fitted in the replacement core mounting portion 122,
4 and the square holes 125 respectively communicate with each other. The tapered round hole 132 is coaxial with the round hole 124 provided in the core body 120, and has a portion corresponding to the round hole 124 on the one end face side of the core as a starting point.
Cone-shaped first tapered surface whose diameter gradually decreases with increasing distance from
Has 132a. The tip of the first tapered surface 132a reaches the other end surface side of the core through the inner peripheral surface 132b having the same inner diameter. A female screw hole 126, which is coaxial with the round hole 124, is formed in the inner surface of the replacement core mounting portion 122 that contacts the other end surface of the replacement core 130. The taper groove 133 is
Corresponding to the square hole 125 provided in the core body 120, the bottom surface of the second flat surface is inclined in a direction away from the facing surface 121 of the core body 120 from a portion corresponding to the square hole 125 on one end surface side of the core as a starting point. It has a tapered surface 133a.
丸孔124及びテーパ丸孔132は第１嵌入部材140を受け入
れ、角孔125及びテーパ溝133は第２嵌入部材150を受け
入れるためにそれぞれ形成されたものである。The round hole 124 and the tapered round hole 132 are formed to receive the first fitting member 140, and the square hole 125 and the tapered groove 133 are formed to receive the second fitting member 150, respectively.
第１嵌入部材140は所謂テーパピンで、丸孔124に対向す
る直胴部141と、テーパ丸孔132に対応するテーパ胴部14
2とからなる。直胴部141は丸孔124にがたつきなく挿入
され得る外径を有し、テーパ胴部142はテーパ丸孔132の
第１テーパ面132aに全体にわたって対応する円錐状のテ
ーパ面142aを有する。第１嵌入部材140の中心部には、
第１嵌入部材140を丸孔124及びテーパ丸孔132に押し込
むためのねじ部であるボルト160の貫通孔143が設けられ
ている。ボルト160はその先端部に形成された雄ねじ部1
61をコア本体120の雌ねじ穴126に蝶合させ得るようにな
っている。The first fitting member 140 is a so-called taper pin, and has a straight body portion 141 facing the round hole 124 and a taper body portion 14 corresponding to the tapered round hole 132.
It consists of 2 and. The straight body portion 141 has an outer diameter that allows it to be inserted into the round hole 124 without rattling, and the tapered body portion 142 has a conical tapered surface 142a that entirely corresponds to the first tapered surface 132a of the tapered round hole 132. . At the center of the first fitting member 140,
A through hole 143 of a bolt 160, which is a screw portion for pushing the first fitting member 140 into the round hole 124 and the tapered round hole 132, is provided. The bolt 160 has a male screw portion 1 formed at its tip.
61 can be engaged with the internally threaded hole 126 of the core body 120.
角孔125及びテーパ溝133に嵌入される第２嵌入部材150
は所謂くさび板で、先端部にくさび部151を有する。く
さび部151はテーパ溝133のコア一端面側の端部形状に合
致し、第２テーパ面133aのコア一端面側に部分的に対応
するテーパ面151aを有する。くさび部151以外の部分は
角孔125にがたつきなく挿入され得る長さ方向で同一の
断面形状を有する。The second fitting member 150 fitted in the square hole 125 and the tapered groove 133.
Is a so-called wedge plate and has a wedge portion 151 at the tip. The wedge portion 151 has a tapered surface 151a that matches the end shape of the tapered groove 133 on the one end surface side of the core, and partially corresponds to the one end surface side of the second tapered surface 133a. Portions other than the wedge portion 151 have the same cross-sectional shape in the longitudinal direction that can be inserted into the square hole 125 without rattling.
コア100はその取付板110を型締め装置の例えば固定側に
固着してあり、コア100部に組み合わされるキャビティ2
00は、その取付板210を型締め装置の例えば可動側に固
着してある。キャビティ200は、中心部にスプール230を
有し、本体220のコア100との対向面221に、差換コア130
の頭部131の形状に対するキャビティ部221aを有する。
型締め装置を作動させてコア100とキャビティ200とを閉
じ、キャビティ200のスプール20より本体220のキャビテ
ィ部221aにプラスチック樹脂を注入することにより、所
望形状の成形品が製造されるようになっている。The mounting plate 110 of the core 100 is fixed to, for example, the fixed side of the mold clamping device, and the cavity 2 combined with the core 100 part
In 00, the mounting plate 210 is fixed to, for example, the movable side of the mold clamping device. The cavity 200 has a spool 230 in the center thereof, and a replacement core 130 is provided on a surface 221 of the main body 220 facing the core 100.
It has a cavity portion 221a corresponding to the shape of the head portion 131.
By operating the mold clamping device to close the core 100 and the cavity 200 and injecting the plastic resin from the spool 20 of the cavity 200 into the cavity portion 221a of the main body 220, a molded product having a desired shape can be manufactured. There is.
このような射出成形用金型では、差換コア130の嵌着及
び離脱が次のようにして行われる。In such an injection molding die, the replacement core 130 is fitted and removed as follows.
差換コア130をコア本体120の差換コア取付部122に嵌着
するには、金型を開いた状態で、まず差換コア取付部12
2に差換コア130を押し込む。差換コア取付部122と差換
コア130との間のクリアランスは僅かであるので、差し
込みだけでは差換コア130は差換コア取付部122に完全に
嵌入さない。そこで、コア本体120の雌ねじ穴126が丸孔
124を通じて差換コア130のテーパ丸孔132内に現れるま
で差換コア130を押し込んだ段階で、コア本体120の側面
123の側より丸孔124に第１嵌入部材140を差し込む。差
換コア130が十分に押し込めない場合には、差し込んだ
第１嵌入部材140を木づち等で軽くたたく。しかる後、
第１嵌入部材140にその挿通孔143よりボルト160を差し
込んでその雄ねじ部161をコア本体120の雌ねじ穴126に
蝶合させる。To fit the replacement core 130 into the replacement core mounting portion 122 of the core body 120, first, with the mold open, replace the replacement core mounting portion 12 first.
Push the exchange core 130 into 2. Since the clearance between the exchange core attachment portion 122 and the exchange core 130 is small, the exchange core 130 cannot be completely fitted into the exchange core attachment portion 122 only by inserting. Therefore, the female screw hole 126 of the core body 120 is a round hole.
The side surface of the core body 120 when the exchange core 130 is pushed in until it appears in the tapered round hole 132 of the exchange core 130 through 124.
The first fitting member 140 is inserted into the round hole 124 from the 123 side. When the replacement core 130 cannot be pushed in sufficiently, the inserted first insertion member 140 is lightly tapped with a wooden stick or the like. After that,
A bolt 160 is inserted into the first fitting member 140 through the insertion hole 143 so that the male screw portion 161 is engaged with the female screw hole 126 of the core body 120.
この状態では、第１嵌入部材140におけるテーパ胴部142
の先端部が差換コア130のテーパ丸孔132内に挿入され、
先端部のテーパ周面142aがテーパ丸孔132の第１テーパ
面132aに差換コア取付部122の底面122a側で接触する。In this state, the tapered barrel 142 of the first fitting member 140
Is inserted into the tapered round hole 132 of the exchange core 130,
The tapered peripheral surface 142a of the tip portion contacts the first tapered surface 132a of the tapered round hole 132 on the side of the bottom surface 122a of the exchange core mounting portion 122.
次いで、この状態からボルト160の雄ねじ部161をコア本
体120の雌ねじ部126にねじ込んで行くと、第１嵌入部材
140のテーパ胴部142がテーパ丸孔132内に侵入して行
く。これによりテーパ周面142aと第１テーパ面132aとの
接触部でくさび作用が生じ、テーパ胴部142のテーパ丸
孔132内に侵入にともなって、差換コア130が差換コア取
付部122に圧入される。テーパ胴部142が第１テーパ面13
2aの内面側に完全に侵入し終わるまで、ボルト160のね
じ込みを続ければ、差換コア130は差換コア取付部122に
完全に嵌入する。ねじ込まれたボルト160をそのままに
しておけば、第１嵌入部材140の抜けが防止され、第１
嵌入部材140が差換コア130に対する抜け止めピンとして
機能する。その結果、差換コア130は差換コア取付部122
内に固定される。Next, when the male screw portion 161 of the bolt 160 is screwed into the female screw portion 126 of the core body 120 from this state, the first fitting member is inserted.
The tapered body 142 of 140 enters into the tapered round hole 132. As a result, a wedge action is generated at the contact portion between the tapered peripheral surface 142a and the first tapered surface 132a, and when the tapered core hole 142 enters the tapered round hole 132, the replacement core 130 becomes the replacement core mounting portion 122. Pressed in. The tapered body portion 142 has the first tapered surface 13
If the bolt 160 is continuously screwed in until it completely penetrates into the inner surface side of 2a, the exchange core 130 is completely fitted into the exchange core mounting portion 122. If the screwed bolt 160 is left as it is, the first fitting member 140 is prevented from coming off, and
The fitting member 140 functions as a retaining pin for the exchange core 130. As a result, the replacement core 130 is replaced with the replacement core mounting portion 122.
Fixed inside.
差換コア取付部122に嵌着された差換コア130を離脱させ
るには、ボルト160を取り外して第１嵌入部材140を丸孔
124及びテーパ丸孔132から抜き取る。次いで、コア本体
120の側面123の側から角孔125内に第２嵌入部材150を差
し込む。第２嵌入部材150のくさび部151が差換コア130
におけるテーパ溝133のコアー端側に挿入される。引き
続き第２嵌入部材150を木づち等を用いて圧入すれば、
くさび部151のテーパ面151aとテーパ溝133の第２テーパ
面133aとの間にくさび作用が生じ、僅かの圧入力で差換
コア130が差換コア取付部122より抜けて行く。差換コア
取付部122から差換コア130がある程度抜けると、差換コ
ア130を外部へ容易に抜き出すことができる。In order to detach the exchange core 130 fitted in the exchange core attachment portion 122, the bolt 160 is removed and the first insertion member 140 is provided with a round hole.
Remove from 124 and tapered round hole 132. Then the core body
The second fitting member 150 is inserted into the square hole 125 from the side surface 123 side of the 120. The wedge portion 151 of the second fitting member 150 is the replacement core 130.
In the core groove side of the taper groove 133. If the second fitting member 150 is subsequently press-fitted using a wood hammer or the like,
A wedge action occurs between the tapered surface 151a of the wedge portion 151 and the second tapered surface 133a of the tapered groove 133, and the exchange core 130 comes out of the exchange core attachment portion 122 with a slight pressure input. When the exchange core 130 is pulled out from the exchange core attachment portion 122 to some extent, the exchange core 130 can be easily pulled out to the outside.
以上のようにして、コア100の正面側及び側面側からの
操作だけで、差換コア130の交換が行われる。従って、
差換コア130の交換に際して、コア100を型締め装置から
取り外す必要がない。As described above, the exchange core 130 is exchanged only by the operation from the front and side surfaces of the core 100. Therefore,
When replacing the replacement core 130, it is not necessary to remove the core 100 from the mold clamping device.
なお、上記実施例では、差換コア130をコア100の側に取
付けているが、キャビティ200の側にとり付けることも
でき、更にコア100及びキャビティ200の両方に取り付け
ることも可能である。また、差換コア130の形状及び個
数について、成形品の形状に応じて適宜決定され、更
に、差換コア130を差換コア取付部122に差し込む際の作
業を容易ならしめるために、その先端部を全体的にテー
パ形状とすることも可能である。Although the replacement core 130 is attached to the core 100 side in the above-described embodiment, it may be attached to the cavity 200 side, or may be attached to both the core 100 and the cavity 200. Further, the shape and the number of the exchange core 130 are appropriately determined according to the shape of the molded product, and further, in order to facilitate the work when inserting the exchange core 130 into the exchange core mounting portion 122, the tip thereof It is also possible for the part to be entirely tapered.
〈考案の効果〉 以上、本考案にかかる射出成形用金型による場合は、コ
ア本体を型締め装置等から取り外すことなく差換コアを
交換できる構成となっているので、差換コアの交換が容
易となる。しかも差換コアを装着するに当たり、第１嵌
入部材を挿入するだけで差換コアが位置決めされるの
で、木づち等を用いて差換コアを叩くようなことをせず
とも、差換コアを容易に装着できる一方、差換コアを離
脱させるに当たり、第２嵌入部材を挿入すれば差換コア
が離脱する方向に若干動くので、差換コアを容易に離脱
させることができる。つまり金型を破損させる可能性が
極めて低いにもかかわらず、差換コアの交換作業をスム
ーズに行うことができるというメリットがある。<Effects of the Invention> As described above, in the case of the injection molding die according to the present invention, since the replacement core can be replaced without removing the core body from the mold clamping device, the replacement core can be replaced. It will be easy. In addition, when the replacement core is mounted, the replacement core is positioned only by inserting the first fitting member, so that the replacement core can be mounted without hitting the replacement core with a wood hammer or the like. While it can be easily mounted, when the second insertion member is inserted when the exchange core is detached, the exchange core slightly moves in the detaching direction, so that the exchange core can be easily detached. In other words, there is an advantage that the replacement core replacement work can be performed smoothly even though the possibility of damaging the mold is extremely low.
第１図は本考案にかかる射出成形用金型の断面図、第２
図はその差換コアの斜視図、第３図及び第４図は要部詳
細構造及び動作を示す断面図、第５図は従来の射出成形
用金型の断面図である。 100……コア 120……コア本体 121……対向面 122……差換コア取付部 130……差換コア 132a……第１テーパ面 133a……第２テーパ面 140……第１嵌入部材 150……第２嵌入部材 200……キャビティ 220……キャビティ本体 221……対向面FIG. 1 is a sectional view of an injection molding die according to the present invention, and FIG.
FIG. 3 is a perspective view of the replacement core, FIGS. 3 and 4 are cross-sectional views showing a detailed structure and operation of a main part, and FIG. 5 is a cross-sectional view of a conventional injection molding die. 100 …… Core 120 …… Core body 121 …… Opposing surface 122 …… Replacement core mounting part 130 …… Replacement core 132a …… First tapered surface 133a …… Second tapered surface 140 …… First fitting member 150 ...... Second fitting member 200 ...... Cavity 220 ...... Cavity body 221 ...... Counter face
Claims (1)
アが挿脱自在である射出成形用金型において、 前記差換コアに前記コア収容部に対する挿脱方向と直交
する方向に貫通させるように形成した第１の穴と、 前記コア本体に前記第１の穴に連通するように形成した
第２の穴と、 第１の穴及び第２の穴に嵌入される第１嵌入部材と、 第１嵌入部材を前記差換コアとともに前記コア本体に固
定するための締結部材であって第１嵌入部材の中央部に
第１、第２の穴の方向と同じ方向に貫通させて形成した
穴に通されるねじ部と、 前記コア本体におけるコア収容部の内壁上に形成してお
り前記ねじ部の先端部と螺合されるねじ穴と、 第１の穴とは別に、前記差換コアに前記コア収容部に対
する挿脱方向と直交する方向に形成した第３の穴と、 第２の穴とは別に、前記コア本体に第３の穴に連通する
ように形成した第４の穴と、 第３の穴及び第４の穴に嵌入される第２嵌入部材とを具
備しており、 且つ第１嵌入部材の先端部が第１の穴に挿入されるに伴
って前記差換コアを前記コア収容部に位置決めさせるべ
く、第１嵌入部材の先端部及び第１の穴の内面には第１
テーパ面が形成されている一方、第２嵌入部材の先端部
が第４の穴を介して第３の穴に挿入されるに伴って前記
差換コアを前記コア収容部から離脱させるべく、第３の
穴には第２テーパ面が形成されていることを特徴とする
射出成形用金型。1. An injection molding die in which a replacement core is insertable into and removable from a core accommodating portion formed in a core body, and the exchange core penetrates in a direction orthogonal to an inserting and removing direction with respect to the core accommodating portion. So formed, a second hole formed in the core body so as to communicate with the first hole, and a first fitting member fitted into the first hole and the second hole. And a fastening member for fixing the first fitting member together with the exchange core to the core body, and formed in the central portion of the first fitting member so as to penetrate in the same direction as the first and second holes. A threaded portion that is passed through the hole, a threaded hole that is formed on the inner wall of the core accommodating portion of the core body and that is screwed into the tip of the threaded portion, and the first hole, A third hole formed in the replacement core in a direction orthogonal to the inserting / removing direction with respect to the core accommodating portion; In addition to the second hole, the core body includes a fourth hole formed to communicate with the third hole, and a second fitting member fitted into the third hole and the fourth hole. And the inner surface of the first hole of the first fitting member and the inner surface of the first hole so as to position the exchange core in the core accommodating portion as the tip of the first inserting member is inserted into the first hole. Is the first
While the tapered surface is formed, as the distal end portion of the second fitting member is inserted into the third hole through the fourth hole, the exchange core is detached from the core accommodating portion. A second taper surface is formed in the hole 3 for injection molding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989034038U JPH0644663Y2 (en) | 1989-03-25 | 1989-03-25 | Injection mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989034038U JPH0644663Y2 (en) | 1989-03-25 | 1989-03-25 | Injection mold |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02124125U JPH02124125U (en) | 1990-10-12 |
| JPH0644663Y2 true JPH0644663Y2 (en) | 1994-11-16 |
Family
ID=31538164
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1989034038U Expired - Fee Related JPH0644663Y2 (en) | 1989-03-25 | 1989-03-25 | Injection mold |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0644663Y2 (en) |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6384316U (en) * | 1986-11-21 | 1988-06-02 | ||
| JPS63128009U (en) * | 1987-02-14 | 1988-08-22 |
-
1989
- 1989-03-25 JP JP1989034038U patent/JPH0644663Y2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02124125U (en) | 1990-10-12 |
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| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |