JPH054979Y2 - - Google Patents
Info
- Publication number
- JPH054979Y2 JPH054979Y2 JP1987199872U JP19987287U JPH054979Y2 JP H054979 Y2 JPH054979 Y2 JP H054979Y2 JP 1987199872 U JP1987199872 U JP 1987199872U JP 19987287 U JP19987287 U JP 19987287U JP H054979 Y2 JPH054979 Y2 JP H054979Y2
- Authority
- JP
- Japan
- Prior art keywords
- mold
- injection molding
- holding member
- mold holding
- molding machine
- 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
- 238000001746 injection moulding Methods 0.000 claims description 40
- 238000000465 moulding Methods 0.000 claims description 19
- 239000011347 resin Substances 0.000 claims description 15
- 229920005989 resin Polymers 0.000 claims description 15
- 238000000926 separation method Methods 0.000 claims description 5
- 208000015943 Coeliac disease Diseases 0.000 description 37
- 230000000694 effects Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 238000013459 approach Methods 0.000 description 2
- 125000006850 spacer group Chemical group 0.000 description 2
- 235000019589 hardness Nutrition 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
Landscapes
- Moulds For Moulding 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、パーテイング射出成形機用金型に係
り、大きな型締力を発揮させることができると共
に、型開きと同時に成形品を取り出すことのでき
る射出成形機用金型に関するものである。[Detailed description of the invention] "Industrial application field" The present invention relates to a mold for a parting injection molding machine, and is capable of exerting a large mold clamping force, and also makes it possible to take out the molded product at the same time as the mold is opened. This relates to molds for injection molding machines.
「従来の技術」
従来のこの種の射出成形機用金型としては、第
１０図、第１１図に示すようなものが知られてい
る。ここで、図を用いて簡単に説明する。"Prior Art" As a conventional mold for an injection molding machine of this type, those shown in FIGS. 10 and 11 are known. Here, it will be briefly explained using figures.
図中符号１は射出成形機用金型を示すものであ
り、この射出成形機用金型１は射出成形機に固定
される固定側金型取付板２と、該固定側金型取付
板２に平行に配設された可動側金型取付板３との
間に、板状の金型４，５を層状に重ねて締め付け
たものであり、固定金型４と可動金型５の間との
合わせ目（パーテイングライン）６には成形品を
成形するキヤビテイ７が設けられていると共に、
固定側金型取付板２及び固定金型４には、図示し
ない射出成形機のノズルから噴出される樹脂をキ
ヤビテイ７へ流入させるための通路であるスプル
ー８がパーテイングライン６とは直交する方向に
形成されている。さらに、各スプルー８はランナ
９によつて連結されていると共に、スプルー８の
先端部はゲート１０によつてキヤビテイ７に連通
されている。また、可動金型取付板３と可動金型
５との間には、スペーサーブロツク１１が介挿さ
れており、該スペーサーブロツク１１の内部には
キヤビテイ７内で形成された成形品をキヤビテイ
７内から突き出すための突出ピン１２が配設され
た構成となつている。 Reference numeral 1 in the figure indicates a mold for an injection molding machine, and the mold 1 for the injection molding machine includes a fixed side mold mounting plate 2 fixed to the injection molding machine, and the fixed side mold mounting plate 2. The plate-shaped molds 4 and 5 are layered and fastened between the movable mold mounting plate 3 arranged parallel to the fixed mold 4 and the movable mold 5. A cavity 7 for molding the molded product is provided at the joint (parting line) 6, and
The fixed side mold mounting plate 2 and the fixed mold 4 have a sprue 8 which is a passage for allowing resin jetted from a nozzle of an injection molding machine (not shown) to flow into the cavity 7 in a direction perpendicular to the parting line 6. is formed. Furthermore, each sprue 8 is connected by a runner 9, and the tip of each sprue 8 is communicated with the cavity 7 by a gate 10. Further, a spacer block 11 is inserted between the movable mold mounting plate 3 and the movable mold 5, and a molded product formed in the cavity 7 is placed inside the spacer block 11. The configuration is such that a protruding pin 12 is provided for protruding from the base.
そして、射出成形機のノズルから噴射された一
定温度で溶解された樹脂は、固定側金型取付板２
及び固定金型４のスプルー８及びランナ９を通つ
てゲート１０からキヤビテイ７の隅々まで充填さ
れた後、金型内で冷却される。樹脂がキヤビテイ
７内で冷却されて硬化して成形品１３となると、
第１１図に示すように可動側金型取付板３を移動
させて型開きを行うが、その際、成形品１３は、
可動金型５側へ付着して残ると共に、スプルー８
やランナ９は固定金型４や固定側金型取付板２内
へ残ることとなる。そのため、前記成形品１３は
突出ピン１２によつて突き出して離型すると共
に、スプルー８やランナ９は、金型から図示しな
い蹴り出しプレートによつて突き出して金型から
離脱し易い状態にした後、図示しない取出機によ
つて抜き取るようにする。 Then, the resin that is injected from the nozzle of the injection molding machine and melted at a constant temperature is transferred to the fixed side mold mounting plate 2.
After passing through the sprue 8 and runner 9 of the fixed mold 4 and filling every corner of the cavity 7 from the gate 10, it is cooled in the mold. When the resin is cooled and hardened in the cavity 7 and becomes the molded product 13,
As shown in FIG. 11, the movable mold mounting plate 3 is moved to open the mold, but at that time, the molded product 13 is
It remains attached to the movable mold 5 side, and the sprue 8
The runners 9 and 9 remain in the fixed mold 4 and the fixed mold mounting plate 2. Therefore, the molded product 13 is ejected by the ejecting pin 12 and released from the mold, and the sprue 8 and runner 9 are ejected from the mold by a kicking plate (not shown) so that they can be easily removed from the mold. , so that it can be removed by a take-out machine (not shown).
「考案が解決しようとする問題点」
ところが、前記従来の射出成形機用金型にあつ
ては、金型が固定側金型取付板と可動側金型取付
板との間に平行に挾み込まれた構造となつている
ため、成形品の成形面積の大きさに応じて大きな
型締機構が必要となること、即ち、射出成形機の
型締力＞成形面積（cm2）×平均金型内樹脂圧力
（Kg／cm2）の関係から、成形面積が増大すると、
その分大きな型締力が必要となり、型締機構に大
形のものが必要となること、さらに、スプルーが
パーテイングラインに対して直交する方向に形成
されているため、スプルーやランナを金型から離
型する際に、取出機を用いた所定の取り出し工程
が必要となり、成形サイクルが延びる原因となつ
ていること等の問題点があつた。``Problem that the invention seeks to solve'' However, in the case of the conventional injection molding machine mold described above, the mold is sandwiched in parallel between the stationary mold mounting plate and the movable mold mounting plate. Since the molded product has a compact structure, a large mold clamping mechanism is required depending on the molding area of the molded product. Due to the resin pressure in the mold (Kg/cm 2 ), when the molding area increases,
This requires a large mold clamping force, which necessitates a large mold clamping mechanism.Furthermore, since the sprue is formed perpendicular to the parting line, the sprue and runners must be attached to the mold. When releasing from the mold, a predetermined ejecting step using a ejecting machine is required, which causes problems such as prolonging the molding cycle.
本考案は前記問題点に鑑みてなされたものであ
り、型締機構を大形化させることなく型締力を大
幅に増大させることができ、あるいは型締機構を
大型化させることなく成形面積の大きな成形品を
成形可能とすることができ、成形後のスプルーや
ランナの取り出しを、取出機を用いることなく型
開と同時に行い、成形サイクルを短縮することの
できる射出成形機用金型を提供することを目的と
しているとしている。 The present invention was made in view of the above problems, and it is possible to significantly increase the mold clamping force without increasing the size of the mold clamping mechanism, or to reduce the molding area without increasing the size of the mold clamping mechanism. Provides a mold for an injection molding machine that is capable of molding large molded products, and that allows sprues and runners to be removed after molding at the same time as the mold is opened without using a take-out machine, thereby shortening the molding cycle. It is said that it is intended to do so.
「問題点を解決するための手段」
本考案は、前記問題点を解決するために、射出
成形機の金型取付板への取付部と、先端に行くに
従つて漸次広がるようにガイド板をＶ字状にボル
トで取り付けた嵌合部とを有する少なくとも一対
の締付部材が、それらの嵌合部を互いに向かい合
わせ、かつ射出成形機の型締方向に離接自在とな
るように配設されると共に、該Ｖ字状のガイド板
に摺動自在に嵌合するガイド溝が形成され、かつ
前記締付部材の離接方向と平行な方向に合わせ目
が形成され、かつ該離接方向と直交する方向に離
接する一対の金型保持部材を前記締付部材の内側
に設けることによつて締付機構が構成され、さら
に、前記金型保持部材の内部には前記合わせ目に
沿つてスプル、ランナ等の樹脂の通路及び成形品
を成形するキヤビテイが設けられると共に、前記
合わせ目と直交する方向に前記スプル、ランナ、
キヤビテイ内で硬化した樹脂を突き出すための突
き出し部材が配設されたものとなつている。``Means for Solving the Problems'' In order to solve the above problems, the present invention provides a mounting part for the mold mounting plate of an injection molding machine and a guide plate that gradually widens toward the tip. At least a pair of clamping members each having a V-shaped fitting portion attached with a bolt are arranged so that the fitting portions face each other and can be freely moved toward and away from each other in the mold clamping direction of the injection molding machine. At the same time, a guide groove is formed to slidably fit into the V-shaped guide plate, and a seam is formed in a direction parallel to the direction of separation of the tightening member, and the direction of movement of the tightening member is A tightening mechanism is constructed by providing a pair of mold holding members that are separated from each other in a direction orthogonal to the clamping member, and further, a pair of mold holding members are provided inside the mold holding member along the seam. A resin passage such as a sprue, a runner, and a cavity for molding the molded product are provided, and the sprue, the runner, etc. are provided in a direction perpendicular to the seam.
A protruding member is provided for protruding the hardened resin within the cavity.
「作用」
本考案では、締付部材のＶ字状の嵌合部に摺動
自在に金型保持部材の摺動面が形成されているた
め、金型保持部材の摺動面は楔状に形成されるこ
となり、締付部材を近接させて金型保持部材を締
め付ける際には、金型保持部材の摺動面の楔効果
によつて金型保持部材には合わせ目に向つて大き
な締め付け力が発生することとなる。したがつ
て、増加した締め付け力の分だけ、金型保持部材
の合わせ目の面積を広くすることができ、成形面
積の大きな成形品を成形することが可能となる。
また、スプルーやランナが合わせ目に沿つて形成
されていると共に、突き出し部材が合わせ目に対
して直交する方向に配設されているため、合わせ
目を挾んで入子金型の両側に突き出し部材を配置
することが可能となり、入子金型の一側部にキヤ
ビテイ内で成形された成形品を押出す突き出し部
材を設け、また入子金型の他側部にスプルーやラ
ンナを押出す突き出し部材を設け、これらによつ
て型開と同時に前記成形品やスプルーやランナを
入子金型から押出すようにすることができる。"Operation" In the present invention, the sliding surface of the mold holding member is formed in a wedge shape so that it can slide freely on the V-shaped fitting part of the tightening member. Therefore, when tightening the mold holding member by bringing the clamping members close together, a large tightening force is applied to the mold holding member toward the seam due to the wedge effect of the sliding surface of the mold holding member. will occur. Therefore, the area of the seam of the mold holding member can be increased by the increased tightening force, making it possible to mold a molded product with a large molding area.
In addition, the sprues and runners are formed along the seam, and the protruding members are arranged in a direction perpendicular to the seam, so the protruding members are inserted on both sides of the nesting mold by sandwiching the seam. A protrusion member is provided on one side of the nesting mold to extrude the molded product formed in the cavity, and a protrusion member on the other side of the nesting mold is used to extrude the sprue or runner. A member is provided so that the molded product, sprue, and runner can be extruded from the nesting mold at the same time as the mold is opened.
「実施例」
以下、本考案の実施例を図面を参照しながら説
明する。図中符号２０は、平行に離間して配設さ
れると共に、図示しない油圧シリンダ等の型締装
置によつて互いに離接自在とされた一対の締付部
材であり、その一方が射出成形機の型締装置の固
定側金型取付板に、他方が移動側金型取付板にそ
れぞれフランジ状の取付部２０ａ，２０ａを介し
て取付けられるようになつており、これらの締付
部材２０の内部に摺動自在に配設された金型保持
部材２１と共に締付機構を構成している。締付部
材２０には、先端に行くに従つて漸次広がるＶ字
状の嵌合部２２が形成されており、該嵌合部２２
の表面には摺動面２２ａが形成されている。金型
保持部材２１は、前記締付部材２０，２０の離接
運動方向に平行で、かつ第１図中Ｘ−Ｘ線を含む
紙面に垂直な面に合わせ目（パーテイング面）２
３が形成されることにより二つに分割されてお
り、その外周部には前記摺動面２２ａと嵌合する
摺動面２２ａと同一傾斜の摺動面２４が形成され
ている。そのため、金型保持部材２１の両端部は
楔状となつており、その先端部には楔角θが形成
されている。そして、金型保持部材２１が締付部
材２０の内部に嵌合された状態で両側から力Ｆで
押圧されると、摺動面２４には楔効果によつて大
きな型締力Fiが発生し、金型保持部材２１をパー
テイング面２３に向つて強く押し付けることとな
る。本実施例においては、楔角θ＝20〜30°を設
定することにより、Fi＝2.8〜1.6Fの関係が成り
立つ。なお、前記各摺動面２２ａ，２４にはかじ
り防止対策として硬度差を設けたり、異種材料の
ものを用いたりするようにしている。"Example" Hereinafter, an example of the present invention will be described with reference to the drawings. Reference numeral 20 in the drawing designates a pair of clamping members that are arranged parallel to each other and spaced apart from each other, and that can be freely moved toward and away from each other by a mold clamping device such as a hydraulic cylinder (not shown). The inside of these clamping members 20 is attached to the stationary mold mounting plate of the mold clamping device, and the other to the movable mold mounting plate of the mold clamping device through flange-shaped mounting portions 20a, 20a, respectively. Together with the mold holding member 21, which is slidably disposed on the mold holding member 21, a tightening mechanism is constituted. The tightening member 20 is formed with a V-shaped fitting portion 22 that gradually widens toward the tip.
A sliding surface 22a is formed on the surface. The mold holding member 21 has a joint (parting surface) 2 in a plane parallel to the direction of movement of the tightening members 20, 20 toward and away from each other and perpendicular to the plane of the paper including the line X-X in FIG.
3 and is divided into two parts, and a sliding surface 24 having the same inclination as the sliding surface 22a that fits into the sliding surface 22a is formed on the outer periphery of the sliding surface 24. Therefore, both ends of the mold holding member 21 are wedge-shaped, and a wedge angle θ is formed at the tip thereof. When the mold holding member 21 is fitted inside the clamping member 20 and is pressed with a force F from both sides, a large mold clamping force Fi is generated on the sliding surface 24 due to the wedge effect. , the mold holding member 21 is strongly pressed toward the parting surface 23. In this embodiment, by setting the wedge angle θ=20 to 30°, the relationship Fi=2.8 to 1.6F is established. The sliding surfaces 22a and 24 are provided with different hardnesses or made of different materials to prevent galling.
前記金型保持部材２１，２１の内部には、第３
図に示すように、それぞれ円柱状、角柱状等の形
状の入子金型２５，２６が嵌合して配設され、さ
らに、パーテイン面２３上で接する入子金型２５
と入子金型２６との間には、一方の入子金型２６
の一端面と他方の入子金型２５に設けた凹所とか
ら成る、成形品を成形するためのキヤビテイ２８
が形成されている。また、各入子金型２５，２６
はその後部を金型保持部材２１に螺着されるロツ
クナツト２９によつて押圧されることにより、金
型保持部材２１に固定されている。金型保持部材
２１に対する入子金型２５，２６の固定構造は、
第４図に示すように、入子金型２５，２６の両側
面と金型保持部材２１とに形成されたキー溝に嵌
合された、キー３０を介して該入子金型２５，２
６が金型保持部材２１に固定され、さらに、金型
保持部材２１と入子金型２５，２６との間に形成
された嵌合溝３１に位置決め固定部材３２がネジ
３３で金型保持部材２１に固定されることによ
り、入子金型２５，２６の背面側への位置保持
が、該位置決め固定部材３２により、なされるよ
うに構成することもできる。 Inside the mold holding members 21, 21, a third
As shown in the figure, nesting molds 25 and 26 each having a cylindrical shape, a prismatic shape, etc. are fitted and disposed, and the nesting molds 25 and 26 are in contact with each other on the parting surface 23.
and the nesting mold 26, one of the nesting molds 26
A cavity 28 for molding a molded product, consisting of one end surface and a recess provided in the other insert mold 25.
is formed. In addition, each nesting mold 25, 26
is fixed to the mold holding member 21 by pressing its rear part with a lock nut 29 screwed onto the mold holding member 21. The structure for fixing the nesting molds 25 and 26 to the mold holding member 21 is as follows:
As shown in FIG. 4, the nesting molds 25, 26 are
6 is fixed to the mold holding member 21, and a positioning fixing member 32 is fixed to the mold holding member 21 with a screw 33 in a fitting groove 31 formed between the mold holding member 21 and the nested molds 25, 26. By being fixed to 21, the positioning and fixing member 32 can be configured to hold the positions of the nesting molds 25 and 26 on the back side.
そして、第１図、第２図に示すように、一方の
入子金型２６のパーテイン面２３に沿つて平行状
に形成されたキヤビテイ２８の一端部には、同様
にパーテイングライン２３に沿つて形成されたス
プルー３４及びランナ３５がゲート３６を介して
連通されており、スプルー３４の他端部は金型保
持部材２１の外端面に開口されることにより、射
出成形機のノズルとの接続口となつている。ま
た、他方の入子金型２５にはキヤビテイ２８内で
硬化した成形品３７の背面を押すことによつて成
形品３７をキヤビテイ２８内から突き出すための
突き出し部材、即ち、突出ピン３８がパーテイン
グ面２３に直交する方向に摺動自在に配設されて
いる一方、一方の入子金型２６には前記スプルー
３４、ランナ３５内で硬化した樹脂を押出すため
の突き出し部材、即ち突出ピン３９がパーテイン
グ面２３に直交する方向に摺動自在に配設されて
いる。また、前記スプルー３４を押出す突出ピン
３９と、成形品３７を押出す突出ピン３８とは、
第６図に示すように、それぞれスプルー３４と成
形品の背面部当接する位置に配設されている。そ
して、突出ピン３８，３９の後端部には、第５図
に示すように、突出プレート４０，４０が固定さ
れており、この突出プレート４０の内側面と入子
金型２５，２６との間には、ばね４１，４２が配
設されており、このばね４１，４２によつて前記
突出ピン３８，３９は常に外側へ付勢されること
によつて、その先端部が入子金型２５，２６の内
側へ収納された状態となつている。さらに、前記
突出プレート４０の背面側には、突出用ローラ４
３が接触した状態で配設されており、該ローラ４
３は、ねじ棒４４ａの内端に固着されたホルダー
４４に回転自在に支持され、該ねじ棒４４ａが一
対の支持部材４５，４５に螺合され、かつナツト
４６によつて締め付けられることにより、パーテ
イング面に直交する方向に移動調節自在に上記支
持部材４５に支持されている。 As shown in FIGS. 1 and 2, one end of the cavity 28, which is formed parallel to the parting surface 23 of one of the nesting molds 26, is also provided along the parting line 23. A sprue 34 and a runner 35 are connected to each other through a gate 36, and the other end of the sprue 34 is opened at the outer end surface of the mold holding member 21 to connect to a nozzle of an injection molding machine. It becomes a mouth. Further, on the other nesting mold 25, an ejecting member, that is, a protruding pin 38, is provided on the parting surface for pushing the back surface of the molded product 37 hardened within the cavity 28 to push the molded product 37 out of the cavity 28. 23, one of the nesting molds 26 has a protruding member, ie, a protruding pin 39, for extruding the resin cured within the sprue 34 and runner 35. It is arranged to be slidable in a direction perpendicular to the parting surface 23. Furthermore, the protruding pin 39 that pushes out the sprue 34 and the protruding pin 38 that pushes out the molded product 37 are as follows:
As shown in FIG. 6, they are arranged at positions where the sprue 34 and the back surface of the molded product come into contact with each other. As shown in FIG. 5, protruding plates 40, 40 are fixed to the rear ends of the protruding pins 38, 39, and the inner surfaces of the protruding plates 40 and the nesting molds 25, 26 are connected to each other. Springs 41 and 42 are disposed between them, and these springs 41 and 42 always urge the protruding pins 38 and 39 outward, so that their tips are pressed against the inserting mold. It is in a state where it is stored inside 25 and 26. Further, on the back side of the protrusion plate 40, a protrusion roller 4 is provided.
3 are arranged in contact with each other, and the roller 4
3 is rotatably supported by a holder 44 fixed to the inner end of a threaded rod 44a, and the threaded rod 44a is screwed into a pair of support members 45, 45, and tightened with a nut 46. It is supported by the support member 45 so as to be movable and adjustable in a direction perpendicular to the parting surface.
なお、上記支持部材４５は、射出成形機の型締
装置の４本のタイバーTB（タイバーTBは締付部
材２０，２０の離接方向に（型締方向）に平行に
設けられているものであるが、第５図では便宜上
締付部材２０，２０の離接方向に直交方向に図示
してある。）の各一対にそれぞれ掛け渡して固着
されている。 Note that the support member 45 is formed by four tie bars TB of a mold clamping device of an injection molding machine (the tie bars TB are provided in parallel to the direction of separation of the clamping members 20, 20 (mold clamping direction)). However, in FIG. 5, for convenience, the fastening members 20, 20 are shown in a direction perpendicular to the direction in which they come and go.
さらに、前記金型保持部材２１，２１の間に
は、基端部が一方の金型保持部材２１に固定され
ていると共に、先端部側が他方の金型保持部材２
１に穿設された摺動孔４８内に摺動自在に嵌合さ
れたガイドロツド４７が設けられており、金型保
持部材２１，２１が型開した場合にも、ガイドロ
ツド４７によつて金型保持部材２１，２１は互い
に分離されることなく、相互に一定の位置を保ち
ながら移動するようになつており、これによつて
入子金型２５，２６の芯だしが行なわれるように
なつている。さらに、締付部材２０，２０には、
第７図ないし第９図に示すように、Ｖ字状の嵌合
部２２に沿つてガイド板４９がボルト５０によつ
て固定されており、このガイド板４９は金型保持
部材２１，２１の両端面に嵌合部２２の摺動面２
２ａに沿つて形成されたガイド溝５１に摺動自在
に嵌合されることにより、型閉あるいは型開する
際に、締付部材２０，２０の移動に伴つて金型保
持部材２１，２１が締付部材２０，２０の移動方
向と直交する方向に移動すると共に、締付部材２
０，２０から離脱しないような構成となつてい
る。 Further, between the mold holding members 21, 21, the base end is fixed to one mold holding member 21, and the distal end side is fixed to the other mold holding member 21.
A guide rod 47 is provided which is slidably fitted into a sliding hole 48 drilled in the mold holder 1. Even when the mold holding members 21, 21 are opened, the guide rod 47 holds the mold. The holding members 21, 21 are not separated from each other and are moved while maintaining a fixed position relative to each other, thereby centering the nesting molds 25, 26. There is. Furthermore, the tightening members 20, 20 include
As shown in FIGS. 7 to 9, a guide plate 49 is fixed by bolts 50 along the V-shaped fitting portion 22, and this guide plate 49 is attached to the mold holding members 21, 21. Sliding surface 2 of fitting part 22 on both end faces
By being slidably fitted into the guide groove 51 formed along the guide groove 2a, the mold holding members 21, 21 move as the clamping members 20, 20 move when closing or opening the mold. While moving in a direction perpendicular to the moving direction of the tightening members 20, 20, the tightening members 2
The configuration is such that it does not deviate from 0.20.
なお、図中５２は、入子金型２５，２６に形成
された軸孔内にパーテイング面２３に直交する方
向に摺動自在に嵌合されたガイド軸であり、外端
部が前記突出プレート４０に固定されており、前
記突出ピン３８，３９の運動を案内するようにな
つており、その内端は径大に形成され、ガイド軸
５２（突出ピン３８，３９）の入子金型２５，２
６からの離脱を防止するようになつている。 Reference numeral 52 in the figure is a guide shaft that is slidably fitted in the shaft holes formed in the nesting molds 25 and 26 in a direction perpendicular to the parting surface 23, and the outer end thereof is connected to the protruding plate. 40 to guide the movement of the protruding pins 38, 39, and its inner end is formed to have a large diameter so that the inserting mold 25 of the guide shaft 52 (protruding pins 38, 39) ,2
It is designed to prevent withdrawal from 6.
つぎに、前記のように構成された、本実施例の
射出成形機用金型の使用方法について、その作用
と共に説明する。 Next, a method of using the mold for an injection molding machine of this embodiment configured as described above will be explained along with its operation.
まず、一対の締付部材２０，２０の一方を射出
成形機の固定側金型取付板（図示せず）に、他方
を可動側板取付板（図示せず）に、それぞれ前記
金型保持部材２１，２１のパーテイン面２３が水
平になるようにして取り付ける。この場合の射出
成形機としては、型締装置の各金型取付板の型締
め運動方向に直交する方向に射出装置の射出ノズ
ルが配置されたものが採用されている。 First, one of the pair of clamping members 20, 20 is attached to the fixed side mold mounting plate (not shown) of the injection molding machine, and the other is attached to the movable side plate mounting plate (not shown), respectively. , 21 so that the parting surfaces 23 of the parts are horizontal. In this case, the injection molding machine employs one in which the injection nozzle of the injection device is arranged in a direction perpendicular to the direction of clamping movement of each mold mounting plate of the mold clamping device.
上記射出成形機の型締め動作が行なわれて、可
動側金型取付板が、固定側金型取付板に接近移動
すると、前記各締付部材２０，２０が相互に接近
し、これに伴い各金型保持部材２１，２１は嵌合
部２２の摺動面２２ａに金型保持部材２１の摺動
面２４を次第に摺動させながら相互に接近移動し
て型閉を行う。そして、金型保持部材２１，２１
がパーテイング面２３で当接されると、締付部材
２０，２０から金型保持部材２１へ伝達される締
め付け力は、金型保持部材２１の摺動面２４の楔
効果によつて大幅に増大された型締力Fiとなつ
て、金型保持部材２１，２１をパーテイング面２
３側へ強力に押し付けることとなり、その結果、
入子金型２５，２６がパーテイング面２３に向つ
て押し付けることとなる。そのため、本実施例の
型締力は大幅に増大し、締付機構を大型化させる
ことなく、成形面積の大きな成形品を成形するこ
とができる。 When the mold clamping operation of the injection molding machine is performed and the movable mold mounting plate moves closer to the fixed mold mounting plate, the respective clamping members 20, 20 approach each other, and accordingly, each of the clamping members 20 approaches each other. The mold holding members 21, 21 move closer to each other while gradually sliding the sliding surface 24 of the mold holding member 21 on the sliding surface 22a of the fitting portion 22 to close the mold. And mold holding members 21, 21
When the parts come into contact with the parting surface 23, the clamping force transmitted from the clamping members 20, 20 to the mold holding member 21 increases significantly due to the wedge effect of the sliding surface 24 of the mold holding member 21. The resulting mold clamping force Fi causes the mold holding members 21, 21 to move toward the parting surface 2.
This results in a strong push towards the 3rd side, and as a result,
The nesting molds 25 and 26 are pressed against the parting surface 23. Therefore, the mold clamping force of this embodiment is significantly increased, and a molded product with a large molding area can be molded without increasing the size of the clamping mechanism.
つぎに、型締装置によつて十分に入子金型２
５，２６が型締めされると、図示しない射出成形
機の射出ノズルを金型保持部材２１のスプルー３
４の開口部に圧接して、可塑化溶融された樹脂を
スプルー３４から注入し、ゲート３６を介してキ
ヤビテイ２８内の隅々まで充填する。キヤビテイ
２８に充填された樹脂が冷却されて硬化すると、
型締装置が型開装置に作動して締付部材２０，２
０を離間（第１図中Ｘ−Ｘ方向へ）させて型開き
させる。締付部材２０，２０が離間すると、第７
図に示すように、締付部材２０に固定されたガイ
ド板４９が金型保持部材２１，２１のガイド溝５
１内を摺動することにより、金型保持部材２１，
２１は次第にパーテイング面２３から離れて型開
きする。金型保持部材２１，２１が、第５図に示
すように、所定の型開量だけ開くに従つて、入子
金型２５，２６も金型保持部材２１，２１と共に
両側へ移動するが、その際、入子金型２５，２６
に設けられた突出ピン３８，３９は、突出プレー
ト４０，４０の背面が突出用ローラ４３，４３に
よつて押圧されるため、入子金型２５，２６と共
に移動することができず、入子金型２５，２６に
対して摺動して、入子金型２５，２６の表面から
パーテイング面２３側へ突出することとなり、そ
の結果、突出ピン３８によつて成形品３７を、ま
た突出ピン３９によつてスプルー３４及びランナ
３５を、それぞれ入子金型２５，２６内から押出
すこととなる。また、前記突出プレート４０は締
付部材２０が移動する方向（Ｘ−Ｘ方向）にも移
動することとなるが、背面が突出用ローラ４３に
よつて押圧されているため円滑に移動することが
できると共に、突出ピン３８，３９の先端部は型
開量分だけ入子金型２５，２６から突出すること
となる。なお、前記突出ピン３８，３９の突出量
は、ホルダー４４に螺着されたナツト４６を回し
て、ホルダー４４を上下に移動させることにより
調節することができる。 Next, the mold 2 is fully inserted by the mold clamping device.
5 and 26 are clamped, the injection nozzle of the injection molding machine (not shown) is connected to the sprue 3 of the mold holding member 21.
4, the plasticized and molten resin is injected from the sprue 34 and filled into every corner of the cavity 28 through the gate 36. When the resin filled in the cavity 28 is cooled and hardened,
The mold clamping device operates as a mold opening device to close the clamping members 20, 2.
0 (in the direction of XX in FIG. 1) and open the mold. When the tightening members 20, 20 are separated, the seventh
As shown in the figure, the guide plate 49 fixed to the tightening member 20 is connected to the guide groove 5 of the mold holding members 21, 21.
1, the mold holding member 21,
21 gradually separates from the parting surface 23 and opens the mold. As the mold holding members 21, 21 open by a predetermined mold opening amount as shown in FIG. 5, the nested molds 25, 26 also move to both sides together with the mold holding members 21, 21. At that time, the nesting molds 25, 26
The ejecting pins 38 and 39 provided in the ejecting plates 40 and 40 cannot move together with the insert molds 25 and 26 because the back surfaces of the ejecting plates 40 and 40 are pressed by the ejecting rollers 43 and 43. It slides against the molds 25 and 26 and protrudes from the surfaces of the nesting molds 25 and 26 toward the parting surface 23, and as a result, the molded product 37 is held by the protrusion pin 38, and the protrusion pin 39, the sprue 34 and runner 35 are extruded from the nesting molds 25 and 26, respectively. The protruding plate 40 also moves in the direction in which the tightening member 20 moves (X-X direction), but because the back surface is pressed by the protruding roller 43, it cannot move smoothly. At the same time, the tips of the protruding pins 38 and 39 protrude from the nesting molds 25 and 26 by the amount of mold opening. The amount of protrusion of the protruding pins 38 and 39 can be adjusted by turning a nut 46 screwed onto the holder 44 and moving the holder 44 up and down.
また、型開する金型保持部材２１，２１は、ガ
イドロツド４７の働きによつて互いに移動方向の
位置ずれが生じないと共に、ガイド板４９の働き
によつて締付部材２０，２０の間に移動自在に保
持された状態となつている。そのため、型開時に
おいても、金型保持部材２１，２１は締付部材か
ら離脱することがないと共に、入子金型２５，２
６の位置がずれることもなく、次ぎの型閉工程に
移行する際にも、芯だし等の作業を行う必要がな
い。 Further, the mold holding members 21 and 21 that open the mold are prevented from being displaced in the moving direction from each other by the action of the guide rod 47, and are moved between the clamping members 20 and 20 by the action of the guide plate 49. It is freely held. Therefore, even when the mold is opened, the mold holding members 21, 21 do not separate from the clamping member, and the nesting molds 25, 2
6 does not shift, and there is no need to perform centering or other work when moving to the next mold closing process.
このように、本実施例の射出成形機用金型にあ
つては、締付部材２０のＶ字状の嵌合部２２に摺
動自在に金型保持部材２１の摺動面２２ａが形成
されているため、金型保持部材２１の摺動面２４
は楔状に形成されることとなり、射出成形機にお
ける型締装置を作動させ、締付部材２０，２０を
近接させて金型保持部材２１を締め付ける際に、
締付部材２０からのＸ−Ｘ方向の締め付け力は、
金型保持部材２１の摺動面２４の楔効果によつて
金型保持部材２１のパーテイング面２３に向かう
大きな型締力となる。したがつて、締め付け力が
増加した分だけ、金型保持部材２１のパーテイン
グ面の面積を広くすることができ、型締装置を大
型化させることなく、成形面積の大きな成形品３
７を形成することが可能となる。また、スプルー
３４やランナ３５がパーテイング面２３に沿つて
形成されていると共に、突出ピン３８，３９がパ
ーテイング面２３に対して直交する方向に配設さ
れているため、パーテイング面２３を挾んで入子
金型２５，２６の両側に突出ピン３８，３９を配
置することが可能となり、入子金型２５内にキヤ
ビテイ２８内で成形された成形品３７を押出す突
出ピン３８を設ける一方、入子金型２６内にスプ
ルー３４やランナ３５を押出す突出ピン３９を設
け、これらによつて型開と同時に成形品３７やス
プルー３４やランナ３５を入子金型２６やコアか
ら押出すようにすることができる。したがつて、
成形品やスプルー等の取出機が不要となると共
に、取り出し工程が不要となり、射出成形機の成
形サイクルを短縮させることができる。 As described above, in the mold for an injection molding machine of this embodiment, the sliding surface 22a of the mold holding member 21 is formed to be slidable on the V-shaped fitting portion 22 of the clamping member 20. Therefore, the sliding surface 24 of the mold holding member 21
is formed into a wedge shape, and when the mold clamping device in the injection molding machine is operated and the clamping members 20, 20 are brought close to each other to clamp the mold holding member 21,
The tightening force from the tightening member 20 in the X-X direction is
The wedge effect of the sliding surface 24 of the mold holding member 21 results in a large mold clamping force directed toward the parting surface 23 of the mold holding member 21 . Therefore, the area of the parting surface of the mold holding member 21 can be increased by the increased clamping force, and the molded product 3 with a large molding area can be produced without increasing the size of the mold clamping device.
7 can be formed. In addition, since the sprue 34 and the runner 35 are formed along the parting surface 23 and the protruding pins 38 and 39 are arranged in a direction perpendicular to the parting surface 23, the sprue 34 and the runner 35 are inserted into the parting surface 23 by sandwiching the parting surface 23. It becomes possible to arrange the protruding pins 38 and 39 on both sides of the child molds 25 and 26, and while the protruding pins 38 for pushing out the molded product 37 formed in the cavity 28 are provided in the child mold 25, A protruding pin 39 for pushing out the sprue 34 and runner 35 is provided in the child mold 26, so that the molded product 37, sprue 34, and runner 35 are pushed out from the nesting mold 26 and the core at the same time as the mold is opened. can do. Therefore,
This eliminates the need for a machine for taking out molded products, sprues, etc., and also eliminates the need for a take-out process, making it possible to shorten the molding cycle of the injection molding machine.
なお、上述した実施例以外の他の実施例及び、
技術的事項について以下に記載する。 In addition, other examples other than the above-mentioned examples and
Technical matters are described below.
(i) 前記実施例においては、締付部材２０の嵌合
部２２及び金型保持部材２１の摺動面２４の楔
角θを20°〜30°に設定したが、これに限られる
ことなく任意の角度に設定し、型締力の調節を
行うことができるのは勿論である。(i) In the above embodiment, the wedge angle θ of the fitting portion 22 of the tightening member 20 and the sliding surface 24 of the mold holding member 21 was set to 20° to 30°, but the wedge angle is not limited to this. Of course, it is possible to set the angle to any desired angle and adjust the mold clamping force.
(ii) 前記実施例においては、金型保持部材２１，
２１の型開方向を上下方向とし、スプルー３４
の開口部が型開方向に直角な水平方向に位置す
るようにしたが、これに限られることなく、金
型保持部材２１，２１の型開方向を水平方向と
し、スプル３４の開口部が上下方向に位置する
ようにしても良い。(ii) In the above embodiment, the mold holding member 21,
The mold opening direction of 21 is the vertical direction, and the sprue 34
Although the opening of the sprue 34 is located in the horizontal direction perpendicular to the mold opening direction, the present invention is not limited to this. It may be positioned in the direction.
(iii) 前記実施例においては、金型保持部材２１，
２１の内部に入子金型２５，２６を配設し、こ
れにスプルー、ランナ等の樹脂通路やキヤビテ
イを形成したが、入子金型２５，２６を省略
し、金型保持部材２１，２１に前記樹脂通路や
キヤビテイを直接設けるようにしてもよい。(iii) In the above embodiment, the mold holding member 21,
The nesting molds 25 and 26 were arranged inside the mold holding members 21 and 21, and resin passages and cavities such as sprues and runners were formed therein, but the nesting molds 25 and 26 were omitted and the mold holding members 21 and The resin passage or cavity may be directly provided in the resin passageway or cavity.
「考案の効果」
以上詳細に説明したように、本考案の射出成形
機用金型においては、射出成形機の金型取付板へ
の取付部と、先端に行くに従つて漸次広がるよう
にガイド板をＶ字状にボルトで取り付けた嵌合部
とを有する少なくとも一対の締付部材が、それら
の嵌合部を互いに向かい合わせ、かつ射出成形機
の型締方向に離接自在となるように配設されると
共に、該Ｖ字状のガイド板に摺動自在に嵌合する
ガイド溝が形成され、かつ前記締付部材の離接方
向と平行な方向に合わせ目が形成され、かつ該離
接方向と直交する方向に離接する一対の金型保持
部材を前記締付部材の内側に設けることによつて
締付機構が構成され、さらに、前記金型保持部材
の内部には前記合わせ目に沿つてスプル、ランナ
等の樹脂の通路及び成形品を成形するキヤビテイ
が設けられると共に、前記合わせ目と直交する方
向に突き出し部材が配設されたものであるので、
金型保持部材の摺動面は楔状に形成されることな
り、締付部材を近接させて金型保持部材を締め付
ける際には、金型保持部材の摺動面の楔効果によ
つて金型保持部材には合わせ目に向つて大きな締
め付け力が発生することとなる。したがつて、増
加した締め付け力の分だけ、金型保持部材の合わ
せ目の面積を広くすることができ、型締装置を大
型化させることなく成形面積の大きな成形品を成
形することが可能となる。また、スプルーやラン
ナが合わせ目に沿つて形成されていると共に、突
き出し部材が合わせ目に対して直交する方向に配
設されているため、合わせ目を挾んで入子金型の
両側に突き出し部材を配置することが可能とな
り、入子金型の一側部にキヤビテイ内で成形され
た成形品を押出す突き出し部材を設け、また入子
金型の他側部にスプルーやランナを押出す突き出
し部材を設け、これらによつて型開と同時に前記
成形品やスプルーやランナを入子金型から押出す
ようにすることができる。したがつて、従来のよ
うにスプルーやランナ等の取出機が不要となると
共に、型開した後に別の取り出し工程が不要とな
り、射出成形機の成形サイクルを短縮させること
ができる。また、ガイド板はボルトで締付部材に
取り付けられているので、金型保持部材との間の
摺動によつて摩耗することがあつても、これを新
しい物に交換することが容易である。"Effects of the invention" As explained in detail above, in the mold for an injection molding machine of the present invention, the attachment part to the mold mounting plate of the injection molding machine and the guide that gradually widens toward the tip At least a pair of clamping members each having a fitting portion formed by attaching a plate in a V-shape with bolts, the fitting portions facing each other and being freely separable in the mold clamping direction of the injection molding machine. A guide groove is formed to slidably fit into the V-shaped guide plate, and a seam is formed in a direction parallel to the direction of separation of the tightening member, and A tightening mechanism is constructed by providing a pair of mold holding members that are separated from each other in a direction orthogonal to the tangential direction inside the clamping member, and further, a pair of mold holding members that are separated from each other in a direction perpendicular to the tangential direction are provided inside the clamping member, and further, a pair of mold holding members are provided inside the mold holding member at the seam. A resin passage such as a sprue, a runner, etc. and a cavity for molding the molded product are provided along the joint, and a protruding member is provided in a direction perpendicular to the seam.
The sliding surface of the mold holding member is formed in a wedge shape, so when the clamping member is brought close to tighten the mold holding member, the wedge effect of the sliding surface of the mold holding member will cause the mold to tighten. A large tightening force is generated in the holding member toward the seam. Therefore, the joint area of the mold holding member can be increased by the increased clamping force, making it possible to mold a molded product with a large molding area without increasing the size of the mold clamping device. Become. In addition, the sprues and runners are formed along the seam, and the protruding members are arranged in a direction perpendicular to the seam, so the protruding members are inserted on both sides of the nesting mold by sandwiching the seam. A protrusion member is provided on one side of the nesting mold to extrude the molded product formed in the cavity, and a protrusion member on the other side of the nesting mold is used to extrude the sprue or runner. A member is provided so that the molded product, sprue, and runner can be extruded from the nesting mold at the same time as the mold is opened. Therefore, there is no need for a conventional ejector such as a sprue or a runner, and there is no need for a separate ejecting process after the mold is opened, so that the molding cycle of the injection molding machine can be shortened. Furthermore, since the guide plate is attached to the tightening member with bolts, even if it wears out due to sliding between it and the mold holding member, it is easy to replace it with a new one. .
第１図ないし第９図は本考案の射出成形機用金
型の一実施例を示すものであり、第１図は射出成
形機用金型の平面図、第２図は射出成形機用金型
の側面図、第３図は金型保持部材内に入子金型及
びコアを装着しパーテイング面上にキヤビテイが
形成された状態を示す金型保持部材の断面図、第
４図は金型保持部材と入子金型との連結状態を説
明するための金型保持部材及び入子金型の他の実
施例の断面図、第５図は射出成形機用金型の型開
状態を示すものであり、パーテイング面に対して
直交する方向に入子金型内に配設された突出ピン
と、その突出ピンを押圧する突出用ローラ部分と
を示す射出成形機用金型の断面の平面図、第６図
は成形品を押出すために一方の入子金型に配設さ
れた突出ピンと、スプルを押出すために他方の入
子金型に配設された突出ピンとが段差を以て配設
された状態を説明するための説明図、第７図は射
出成形機用金型の型開時における、締付部材のガ
イド板と金型保持部材に形成されたガイド溝の摺
動状態を説明するための説明図、第８図は射出成
形機用金型の型閉時における、締付部材のガイド
板と金型保持部材に形成されたガイド溝との摺動
状態を説明するための説明図、第９図は第８図の
−断面を示し、締付部材のガイド板と金型保
持部材のガイド溝の摺動状態を示す側面図、第１
０図、第１１図は従来の射出成形機用金型を示す
ものであり、第１０図は入子金型が層状に重ねら
れて型締めされた状態の射出成形機用金型の断面
図、第１１図は射出成形が行なわれた後に型開さ
れた状態の射出成形機用金型の断面図である。
２０……締付部材、２１……金型保持部材、２
２……嵌合部、２２ａ，２４……摺動面、２３…
…合わせ目（パーテイング面）、２５，２６……
入子金型、２７……コア、２８……キヤビテイ、
３４……スプル、３５……ランナ、３７……成形
品、３８，３９……突き出し部材（突出ピン）、
４９……ガイド板、５０……ボルト、５１……ガ
イド溝。
Figures 1 to 9 show an embodiment of the mold for an injection molding machine of the present invention. Figure 1 is a plan view of the mold for the injection molding machine, and Figure 2 is a diagram of the mold for the injection molding machine. A side view of the mold, FIG. 3 is a sectional view of the mold holding member showing a state in which the nesting mold and core are installed in the mold holding member and a cavity is formed on the parting surface, and FIG. 4 is a cross-sectional view of the mold holding member. FIG. 5 is a sectional view of another embodiment of the mold holding member and the nested mold for explaining the connection state between the holding member and the nested mold, and FIG. 5 shows the mold open state of the mold for the injection molding machine. This is a plan view of a cross section of a mold for an injection molding machine, showing an ejecting pin disposed inside the nesting mold in a direction perpendicular to the parting surface and an ejecting roller portion that presses the ejecting pin. , Figure 6 shows an ejector pin placed on one inserting die for extruding the molded product and an ejecting pin disposed on the other inserting die for extruding the sprue, arranged with a step. FIG. 7 is an explanatory diagram for explaining the state in which the mold is opened, and FIG. 7 explains the sliding state of the guide plate of the clamping member and the guide groove formed in the mold holding member when the mold for an injection molding machine is opened. FIG. 8 is an explanatory diagram for explaining the sliding state of the guide plate of the clamping member and the guide groove formed in the mold holding member when the mold for an injection molding machine is closed. 9 is a side view showing the sliding state of the guide plate of the tightening member and the guide groove of the mold holding member, and FIG.
Figures 0 and 11 show conventional molds for injection molding machines, and Figure 10 is a cross-sectional view of the mold for injection molding machines in which nested molds are layered and clamped. , FIG. 11 is a sectional view of a mold for an injection molding machine in a state where the mold is opened after injection molding is performed. 20...Tightening member, 21...Mold holding member, 2
2... Fitting portion, 22a, 24... Sliding surface, 23...
... Seam (parting surface), 25, 26...
Insert mold, 27... core, 28... cavity,
34... Sprue, 35... Runner, 37... Molded product, 38, 39... Projecting member (projecting pin),
49... Guide plate, 50... Bolt, 51... Guide groove.
Claims (1)
行くに従つて漸次広がるようにガイド板をＶ字状
にボルトで取り付けた嵌合部とを有する少なくと
も一対の締付部材が、それらの嵌合部を互いに向
かい合わせ、かつ射出成形機の型締方向に離接自
在となるように配設されると共に、該Ｖ字状のガ
イド板に摺動自在に嵌合するガイド溝が形成さ
れ、かつ前記締付部材の離接方向と平行な方向に
合わせ目が形成され、かつ該離接方向と直交する
方向に離接する一対の金型保持部材を前記締付部
材の内側に設けることによつて締付機構が構成さ
れ、さらに、前記金型保持部材の内部には前記合
わせ目に沿つてスプル、ランナ等の樹脂の通路及
び成形品を成形するキヤビテイが設けられると共
に、前記合わせ目と直交する方向に前記スプル、
ランナ、キヤビテイ内で硬化した樹脂を突き出す
ための突き出し部材が配設されたことを特徴とす
る射出成形機用金型。 At least one pair of tightening members each have a mounting portion for attaching to a mold mounting plate of an injection molding machine, and a fitting portion for attaching a guide plate with bolts in a V-shape so as to gradually widen toward the tip. The fitting portions of the guide plates are arranged so that they face each other and can be freely moved toward and away from each other in the mold clamping direction of the injection molding machine, and a guide groove is formed to slidably fit into the V-shaped guide plate. A pair of mold holding members are provided inside the tightening member, and a seam is formed in a direction parallel to the direction of separation of the tightening member, and the mold holding members are separated from each other in a direction perpendicular to the direction of separation. A tightening mechanism is configured by the above-mentioned mold holding member, and furthermore, a passage for resin such as a sprue and a runner along the seam and a cavity for molding the molded product are provided inside the mold holding member, and a cavity for molding the molded product is provided along the seam. said sprue in a direction orthogonal to
A mold for an injection molding machine, comprising a runner and an ejecting member for ejecting hardened resin within the cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987199872U JPH054979Y2 (en) | 1987-12-29 | 1987-12-29 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987199872U JPH054979Y2 (en) | 1987-12-29 | 1987-12-29 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01104316U JPH01104316U (en) | 1989-07-13 |
| JPH054979Y2 true JPH054979Y2 (en) | 1993-02-09 |
Family
ID=31490306
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987199872U Expired - Lifetime JPH054979Y2 (en) | 1987-12-29 | 1987-12-29 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH054979Y2 (en) |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5498870U (en) * | 1977-12-23 | 1979-07-12 | ||
| EP0248790B1 (en) * | 1985-11-27 | 1991-04-24 | American Mold Company, Inc. | Stack mold |
-
1987
- 1987-12-29 JP JP1987199872U patent/JPH054979Y2/ja not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01104316U (en) | 1989-07-13 |
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