JPS5894438A - Injection molding die for sphere having multilayered structure - Google Patents

Injection molding die for sphere having multilayered structure

Info

Publication number
JPS5894438A
JPS5894438A JP19271281A JP19271281A JPS5894438A JP S5894438 A JPS5894438 A JP S5894438A JP 19271281 A JP19271281 A JP 19271281A JP 19271281 A JP19271281 A JP 19271281A JP S5894438 A JPS5894438 A JP S5894438A
Authority
JP
Japan
Prior art keywords
sphere
injection molding
mold
cavity
molded
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.)
Granted
Application number
JP19271281A
Other languages
Japanese (ja)
Other versions
JPS6026691B2 (en
Inventor
Hiroyoshi Hanada
花田　博義
Hiroyoshi Adachi
安達　弘義
Akiji Miyaoku
宮奥　章治
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hayakawa Rubber Co Ltd
Original Assignee
Hayakawa Rubber Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hayakawa Rubber Co Ltd filed Critical Hayakawa Rubber Co Ltd
Priority to JP19271281A priority Critical patent/JPS6026691B2/en
Publication of JPS5894438A publication Critical patent/JPS5894438A/en
Publication of JPS6026691B2 publication Critical patent/JPS6026691B2/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
    • B29C45/14065—Positioning or centering articles in the mould
    • 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
    • B29C45/1703—Introducing an auxiliary fluid into the mould
    • 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
    • B29C45/72—Heating or cooling
    • B29C45/73—Heating or cooling of the mould
    • B29C2045/7387—Heating or cooling of the mould jetting a cooling fluid onto the moulded article while still in the mould

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)

Abstract

PURPOSE:To obtain the titled die by which a high-grade and excellent product without defect can be made by a method wherein the split surface of the die is titled to the die-opening direction, an injection molding sphere is ejected and cooled simultaneously by a spherical core holding pin. CONSTITUTION:The split surface 3 of the molding die is titled by 75-85 degrees to the die opening direction A and cavities 5 are provided respectively on and under this dividing surface 3. The spherical core 1 is held by three pins or more in each cavity 5. After the forces are opened, cooling air is ejected from the spherica core holding pin slide hole 9 onto the surface of the injection molding sphere to cool resin or rubber composition 2 covering the spherical core 1 and at the same time to operate the pin 6 as the ejector pin.

Description

【発明の詳細な説明】 本発明は、射出成形方法によ抄多層構造を有する球体を
能率的にかつ高品質で製造するための射出成形用金型に
関するものである・ 従来は、多層構造を有する球体の製造方法とし、外部被
覆用の材料（たとえば熱可塑性樹脂、熱硬化性樹脂、あ
るいけゴム組成物）會平板から打ち抜き、半球形に予備
成形したもの、又は射出成形方法により半球形に成形し
九ところの被覆材（以下セルという）を所望のキャビテ
ィーに装入し、中芯球体を半球形状のセルの内に入れ、
上下から圧縮成形するのが一般的である。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an injection mold for efficiently and high quality manufacturing of spheres having a multilayer structure by an injection molding method. A method for producing a spherical body with an outer covering material (e.g., thermoplastic resin, thermosetting resin, or rubber composition), which is punched out from a flat plate and preformed into a hemispherical shape, or into a hemispherical shape by an injection molding method. The nine molded covering materials (hereinafter referred to as cells) are placed in the desired cavity, the core sphere is placed inside the hemispherical cell,
It is common to compression mold from the top and bottom.

しかし、これらの半球形セルの圧縮成形方法では非常に
能率が悪く、又パリの発生本多く、成形後のパフ仕上に
も時間がかかるなどの欠点があり、直接中芯球体に射出
成形する金型や方法が考えられた・ しかし麿から、従来の射出底形金型や方法では、射出成
形球体（以下成形球体という）の脱型が困−であり、侍
にセルの柔らかい材料の場合、エゼタタービンで１１ｔ
形球体を突き上げる際に、成形球体の表面に局部的なキ
ズや日令が発生しやすく、清足する品質が得られなかグ
た。However, these compression molding methods for hemispherical cells have drawbacks such as being extremely inefficient, producing a lot of flakes, and taking a long time to finish the puff after molding. However, Maro discovered that it is difficult to demold injection molded spheres (hereinafter referred to as molded spheres) using conventional injection bottom molds and methods, and in the case of soft cell materials, 11t with Ezeta turbine
When pushing up the shaped sphere, local scratches and aging tend to occur on the surface of the shaped sphere, making it difficult to obtain satisfactory quality.

球体Ｏ脱璽方法として、金１ｉ１を傾斜させた方法もあ
るが、この方法だと射出された成形球体だけは、キャビ
ティーの分割面で回転することにより脱型できろが、ス
プール中ランナーの部分はまったく回転せず、金型より
はずれない・そ−のため中ヤビテイーにセルを注入する
ケント部は成形球体とランナ一部とのずれにより引きち
ぎられ、成形筆体表面に傷が発生することがしばしば起
り品質的に１１１足できる方法でない・ 本発明の金型は、従来の成形金型及び成形方法では演足
しえなかった能率及び品質の欠点を解決し、１動成形運
転も可能とする、多層構造を有する成形球体の射出成形
粗金ｍｔ＊供しようとする４のである。As a method for removing the sphere O, there is a method in which the gold 1i1 is tilted, but with this method, only the injected molded sphere can be removed from the mold by rotating on the dividing surface of the cavity, but the runner in the spool The part does not rotate at all and does not come off the mold. Therefore, the part that injects the cells into the inner cavity may be torn off due to the misalignment between the molded sphere and part of the runner, causing scratches on the surface of the molded brush. The mold of the present invention solves the drawbacks of efficiency and quality that could not be achieved with conventional molding molds and molding methods, and also enables single-motion molding operation. , 4 is intended to provide injection molded crude gold mt* of molded spheres having a multilayer structure.

本発明は、先ず、球体の射出成形用金型に於いて、金型
の分割面Ｊと射出成形機のＷｉＲき方向大に対し人との
あいだにできる面角Ｂ（ｔｏ０〜７ｊＯの角度に傾斜さ
せ、この分割面Ｊに上下それぞれキャビティー！を設け
、中芯球体／ｌこのキャヒテイー！内にて保持するピア
４ｔ−１本以上設け、分割面Ｊに対し直角方向、又は鉛
直線方向に可−して会Ｗ１ｗＩ放後はエゼクタ−ビンと
して作動する構造とし、キャビティー！にあけた中芯球
体保持ビンスライド穴？より、冷却空気を射出成形球体
の表面に放出し、中芯球体ｌに被覆した樹脂又はゴム組
成物コの冷却と同時に射出成形球体の離型を行なうこと
ｔ特徴とする・ さらに、本発明は、これに加えて、２ビン穴／／の突き
出し用エゼクタービン／コを設け、射出成形球体を、中
芯球体ｌを保持するビンｔがエゼクタ−ビンとして押し
出すと同時期に作動さすこと全特徴とする０ 本発明の金Ｓ！をさらに具体的に説明をすると、全壊の
分割面Ｊに対し直角な方向又は鉛直線方向に１キヤビテ
イーＩの内壁面より出入り自在にして、射出成形球体の
表面に傷や特別な凹凸の跡を幾重ないようキャビティー
！との表面と一体化した構造の先端を有するエゼクタ−
ビン兼用の中芯球体保持ビン４會少なくとも３本以上設
けた構造とし、射出ｔ１．形する際、この中芯球体保持
ビ／４をキャビティー！の内側に向けて進入させ、中芯
球体／ｌキャビティー！の中心に位置するよう保持する
・中芯球体ｌを保持し力から、射出成形機１７よりセル
２の射出を行なう。セルコの射出が完了する直前にキャ
ビティー！の表面に中芯球体保持ビン６の先端が一致す
るまで、中芯球体保持、ビン４を後退畜せ、キャビティ
ーＪ内にセルコの材料を完全に充満させ、二層構造の成
形球体を得る・ 射出完了後性中芯球体保持ビン１がエゼクタ−ビンとし
て成形球体全会Ｗｉｖ４放後に押し出す・中芯球体保持
ビン６が押し出すときに成形球体の表面は局部的に圧力
が集中しやすいので、中芯球体保持ビンで押される部分
は大きな強賓が必要である。First, in a spherical injection mold, the surface angle B (to0 to 7jO) formed between the dividing surface J of the mold and the person with respect to the WiR direction of the injection molding machine. The upper and lower cavities are provided on this dividing surface J, and one or more piers 4t to be held within the center sphere/l are provided in a direction perpendicular to the dividing surface J or in a vertical direction. Possibly, the assembly W1WI has a structure that operates as an ejector bin, and cooling air is released onto the surface of the injection molded sphere through the core sphere holding bottle slide hole drilled in the cavity! The injection molded sphere is released from the mold at the same time as the resin or rubber composition coated on the resin or rubber composition is cooled.Furthermore, the present invention also provides an ejection turbine/coil with two bottle holes. A more specific explanation of the gold S! of the present invention is as follows: The surface of the cavity is made to be able to move in and out of the inner wall of the cavity I in a direction perpendicular or perpendicular to the dividing plane J of the complete collapse, so as not to leave any scratches or marks of special irregularities on the surface of the injection molded sphere. ejector with a tip that is integrated with the
It has a structure in which at least three or more four core sphere holding bottles are provided which also serve as bottles, and the injection t1. When shaping, use this center sphere holding part 4 as a cavity! Enter it towards the inside of the center sphere/l cavity! The cell 2 is injected from the injection molding machine 17 by holding the center sphere l so that it is located at the center of the sphere. Cavity just before Serco injection is completed! Retract the core sphere holding bottle 4 until the tip of the core sphere holding bottle 6 matches the surface of the center sphere, completely filling the cavity J with the Selco material to obtain a molded sphere with a two-layer structure. - After injection is completed, the core sphere holding bottle 1 acts as an ejector bin and pushes out the entire formed sphere Wiv4. - When the core sphere holding bottle 6 pushes out, pressure tends to concentrate locally on the surface of the formed sphere. The part pressed by the core sphere holding bottle requires a large force.

そこで、この傷つきの改良とし、成形球体の表面を冷却
空気で冷却硬化させて硬くしたものを取り出し易いよう
な型開きにして押し出す方法を発明したのである。Therefore, in order to improve this damage, we invented a method of cooling and hardening the surface of the molded sphere with cooling air, and then extruding it by opening the mold so that it could be easily taken out.

成形球体の射出が完了と同時に、冷却空気を外部より冷
却空気導管７會通して冷却空気弁配置１１でキャビティ
ー！に設けた、中芯球体保持ビンスライド穴りの各々よ
り噴出できるよう分け、中芯球体保持ビンｔと中芯球体
保持ビンスライド穴りとのす！＆まから、この冷却空気
をキャビティー！内に放出し、成形球体の表面の硬化を
促進さすことｔ−特徴とし、エゼクタ−ビンの押し出す
圧力に負けない強賓を得る◎ さらに、冷却空気の放出により成形球体の密着面の剥離
効果があることがわかった。中芯球体保持スライド穴？
より放出された冷却空気は、キャビティーＪの内壁面と
成形球体との密着面に進入しこの密着部分を薄い空気層
が剥して分割面３に抜けて行くことがわかり、成形球体
の脱型により一層の効果があった。At the same time as the injection of the molded sphere is completed, cooling air is passed through the cooling air conduit 7 from the outside and the cavity is filled with the cooling air valve arrangement 11! Separate the core sphere holding bottle slide holes provided in the center so that it can be ejected from each, and place the core sphere holding bottle t and the center sphere holding bottle slide hole! &Makara, this cooling air cavity! It is characterized by releasing cooling air into the air and promoting hardening of the surface of the molded sphere, and obtains a strong force that can withstand the extrusion pressure of the ejector bottle.In addition, the release of cooling air has a peeling effect on the adhesion surface of the molded sphere. I found out something. Center sphere holding slide hole?
It can be seen that the cooling air released from the cavity J enters the contact surface between the inner wall surface of the cavity J and the molded sphere, and a thin air layer peels off this contact part and escapes to the dividing surface 3, and the molded sphere is removed from the mold. It was even more effective.

冷却空気は中芯球体保持ピンｔと中芯球体保持ビンスラ
イド穴デとのすきまから放出するのであるが、このすき
まの間隔は０．ＯＪｍ濯〜０．／ａｒｍが望ましく、間
隔が少なすぎると冷却空気の吐出量が少なく冷却効果が
悪く傷の発生が多い◎又、逆に間隔が大きいと射出材料
が入りこみ易く成形球体の表面にパリが発生する欠点が
起きる０そのたパめす！まけ０．６４４ｍｍ〜０．Ｄｉ
ｍｓの間隔が最も望ましい。The cooling air is released from the gap between the core sphere holding pin t and the core sphere holding bottle slide hole D, and the interval between this gap is 0. OJm rinse~0. /arm is desirable; if the interval is too small, the amount of cooling air discharged will be low, the cooling effect will be poor, and more scratches will occur. ◎On the other hand, if the interval is too large, the injection material will easily get in, causing cracks to form on the surface of the molded sphere. 0 that happens! Allowance 0.644mm~0. Di
A spacing of ms is most desirable.

なお、この場合に、中芯球体保持ピンを自体の先端面に
穿設したピンホール状小孔（図示せず）から、冷却した
圧搾空気を噴出せしめるような構゛成にしても勿論同様
に良い結果が得られる。In this case, of course, the same effect can be achieved even if the core sphere holding pin is constructed in such a way that cooled compressed air is blown out from a small pinhole-shaped hole (not shown) formed in the tip surface of the central sphere holding pin. Good results can be obtained.

５ｉｓｙｔさらに容易ならしめるため、金−の分割面Ｊ
は射出成形機のｍ開き方向ムと分割面Ｊとでなる面角Ｂ
　ｔ　１０°〜７ｊ’の角度に傾斜さす・金型開放のと
きに成形球体をキャビティー５の分割面一・・Ｊの端で
回転させ、金型と成形球体の位１１移動させ、税源を促
進する構造とする。5isyt To make it even easier, divide the gold parting surface J
is the surface angle B formed by the opening direction M of the injection molding machine and the dividing surface J.
t Tilt at an angle of 10° to 7j'. When the mold is opened, rotate the molded sphere at the end of the dividing plane 1...J of the cavity 5, move the mold and the molded sphere 11 positions, and release the tax source. Create a structure that promotes this.

これだけでは、スプールｌ＃中ランナー／ｊがはずれな
いため、成形球体の表面に付いているゲートｔがちぎれ
傷が発生するので、２ビンエゼクタ−／Ｊを設け、スプ
ール／４１Ｌやランナーｔｚｔ−はずす構造とする。If this is done alone, the runner /j in spool l# will not come off, and the gate t attached to the surface of the molded sphere will tear and scratch. shall be.

金型が開放されるときに、スプール／ｌ　を抜くために
、スプール孔の反対測置［ＫＺビ／穴／／を設け、中芯
球体ｌの保持ピンｔがエゼクタ−ピンとして作１する同
時期に、２ピ／エゼクタ−ｌコラ作動させ、スプール揮
、ランナー１ｊｔ−はずし、成形球体の回転によってゲ
ート部が切れるのを防止する。In order to pull out the spool/l when the mold is opened, the opposite position of the spool hole [KZ hole// is provided so that the retaining pin t of the center sphere l is made as an ejector pin. At this time, operate the 2 pin/ejector 1, remove the spool, and remove the runner 1 to prevent the gate part from being cut due to the rotation of the molded sphere.

ヒの２ピンエゼクタ−の作動のタイミングが早すぎると
、スプールが抜けなく脱蓋ができない・逆に遅いと成形
球体の回転によりゲートが切れ、成形球体の表面に−が
発生し不良となる。そのためｚピンエゼクタ＝ｌコＯ突
き出し作動のタイミングは、中芯球体保持ピ／１が成形
球体を突き出す時に同時に作動するのが望ましいタイミ
ングで１ある。If the timing of the operation of the two-pin ejector is too early, the spool will not come out and the lid cannot be removed; if it is too slow, the gate will break due to the rotation of the molded sphere, causing a - to occur on the surface of the molded sphere, resulting in a defect. Therefore, the timing of the ejecting operation of the z pin ejector is preferably such that it operates at the same time as the core sphere holding pin 1 ejects the molded sphere.

以下実施ｆ４ＪＫついてさらに説明する。The f4JK implementation will be further explained below.

実施例　１ 本発明の金ｉｌＫ於いて中芯球体保持ビンスライ・ド大
かも放出する冷却空気の圧力と、冷却時間とｔ変えた実
鞄例であって、ポリエチレン系の熱可塑性樹ｉｉｔｔｍ
覆した成形球体の表面温度と、不良の発数とを一定し評
価した・ 実験番号１〜５は冷却時間を一定にし冷却空気Ｃの圧力
をＪ鵬偽２〜４ψシの範囲で変えたものである・ 実験番号４〜６は冷却空気の圧力を一定にして冷却時間
を変えたものである。Example 1 This is an example of an actual bag in which the pressure of the cooling air released in the metal core of the present invention and the cooling time were varied, and the bag was made of polyethylene thermoplastic resin.
The surface temperature of the overturned molded sphere and the number of defects were fixed and evaluated. Experiments Nos. 1 to 5 were conducted in which the cooling time was kept constant and the pressure of the cooling air C was varied in the range of 2 to 4 ψ. In experiments Nos. 4 to 6, the pressure of the cooling air was kept constant and the cooling time was varied.

比較例は本発明の金１１に於いて冷却空気を放出しない
場合の数値で参る。In the comparative example, the values are shown for the case where cooling air is not released in Gold 11 of the present invention.

表１に示すごとく本発明の金型を使用するととによに従
来の方法では得られなかった高品質の成形球体が得られ
ることがわかった。As shown in Table 1, it was found that when the mold of the present invention was used, molded spheres of high quality, which could not be obtained by conventional methods, could be obtained.

本発明の金−の使用により、成形球体及びスプール、ラ
ンナー等の射出品の完全脱型が可能で、作業能率が向上
し、なによりも高品質の欠陥のない製品が得られ、慶を
かつ射出品の取り出し、中芯球体の供給をロボットで行
なえば自動成形運転も可能となるー さらに、本発明の金型を使って射出した成形球体を仕上
げ、先に射出成形した金型のキャビティーより４大きな
径を有する本発明と同一構造の金１１に中芯球体として
装入し射出成形を行なう。この作１１！！管繰返し行な
えば所望の２層構造以上の多層構造を有する成形球体の
成形が出来る。By using the gold of the present invention, injection products such as molded spheres, spools, and runners can be completely demolded, work efficiency is improved, and above all, high-quality and defect-free products can be obtained. If a robot takes out the injection product and supplies the core sphere, automatic molding operation becomes possible.Furthermore, the molded sphere injected using the mold of the present invention is finished, and the cavity of the mold that was previously injection molded is finished. The gold 11 having the same structure as the present invention having a diameter 4 larger is charged as a core sphere and injection molding is performed. This work 11! ! By repeating the process, it is possible to form a shaped sphere having a desired multilayer structure of two or more layers.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は、本発明の一実施例において中芯球体／を装入
して金型を閉鎖した時の状態を示す垂直断面正面図、第
２図は射出を終了したときの状態を示す垂直断面正面図
、第３図は金型を開放しで射出品を脱型した状ａｔ示す
垂直断面正面図である・ ／・・・中芯球体、コ・・・外部被覆材（セル１、Ｊ・
・・金型分割面、参・・・ガイドピン及びガイドビン穴
、！・・・キャビティー、６・・・中芯球体保持ビン（
兼エゼクタービン）、７・・・冷却９気導管、ｔ・・・
冷却空気分配量、り・・・中芯球体保持ピンスライド穴
、ＩＯ・・・油圧又はエアーシリンダー、ｌ／・・・２
ビン穴、／Ｕ・・・２ピンエゼクタ−１／Ｊ・・・２ピ
ンエゼクタ−用油圧又はエアーシリンダー、／４１１・
・・スプール及びスプール孔、／！・・・ランナー及び
ランナー構、１４・・・ゲート及びゲート溝、／７・・
・射出成形機、λ・・・型開色方向、Ｂ・・・型開き方
向と分割面とで出来る面角〇 第１図 第２図 第８図 手続補正書 昭和５７年　１　月怜日 １、事件の表示 昭和５６年特　許願第１９２７１２　号２発明の名称 多層構造を有する球体の射出成形用金型３、補正をする
者 事件との関係　特許出願人 早川ゴム株式会社 電話（５８１）　２２４１番（代表） １、明細書第８頁第１４行の「ケント部」を「ゲート部
」に訂正する。 ２、図面第１〜８図を別紙のとおりに訂正する。 第１図 第２ｒ？ｌ 第８図Fig. 1 is a vertical sectional front view showing the state when the core sphere/ is inserted and the mold is closed in one embodiment of the present invention, and Fig. 2 is a vertical cross-sectional front view showing the state when injection is completed. Figure 3 is a vertical cross-sectional front view showing the injection molded product after the mold is opened and the injection product is demolded.・
...Mold dividing surface, guide pin and guide bottle hole,! ... Cavity, 6... Core sphere holding bottle (
(cum-execution turbine), 7... cooling 9 air conduit, t...
Cooling air distribution amount, Ri...Central sphere holding pin slide hole, IO...Hydraulic pressure or air cylinder, l/...2
Bottle hole, /U...2 pin ejector 1/J...2 pin ejector hydraulic or air cylinder, /411.
・・Spool and spool hole, /! ...Runner and runner structure, 14...Gate and gate groove, /7...
・Injection molding machine, λ...Mold opening direction, B...Face angle formed by the mold opening direction and the dividing surface〇Figure 1 Figure 2 Figure 8 Procedure amendment document January 1, 1982 , Indication of the case 1981 Patent Application No. 192712 2 Name of the invention spherical injection mold with multilayer structure 3 Person making the amendment Relationship to the case Patent applicant Hayakawa Rubber Co., Ltd. Telephone number (581) 2241 (Representative) 1. Correct "Kent section" to "Gate section" on page 8, line 14 of the specification. 2. Figures 1 to 8 of the drawings are corrected as shown in the attached sheet. Figure 1 2r? l Figure 8

Claims (1)

【特許請求の範囲】 １、球体の射出成形吊金ＩＮＫ於いて、金型の分割面Ｊ
と射出成形機の！ＩＷｉＩき方向大に対し人とのあいだ
にできる面角Ｂを１００〜７７’の角度に傾斜させ、こ
の分割面Ｊに上下それぞれキャビティーＩを設け、中芯
球体ｌをこのキャビティー！内にて保持するビンｔｔ−
１３本以上設叶、分割面ＪＫ対し直角方向、又は鉛直線
方向に可動して金ＷＩＩ！！放後はエゼクタ−ビンとし
て作動する構造とし、キャビティーＩにあけた中芯球体
保持ビンスライド穴２より、冷却空気管射出成形球体の
表面に放出し、中芯球体ｌに被覆した樹脂又はゴム組成
物コの冷却と同時に射出成形球体の離Ｗｉを行なうこと
を特徴とする多層構造を有する球体の射出成形用金型− ！、Ｚピン穴ｌｌの突き出し用エゼクタ−ビン／Ｊを設
け、射出成形球体を、中芯球体／ｆ　　・保持するビン
４がエゼクタ−ビンとして押し出すと同時期に作動さす
ことを特徴とする特許請求の範囲第１項に記載の多層構
造を有する球体の射出成形用金部。[Claims] 1. In the spherical injection molding hanger INK, the dividing surface J of the mold
And an injection molding machine! The face angle B formed between the person and the person in the IWi direction is inclined at an angle of 100 to 77', and cavities I are provided at the top and bottom of this dividing plane J, respectively, and the central sphere l is inserted into this cavity! Bin held within tt-
With 13 or more leaves, movable in the direction perpendicular to the dividing plane JK or in the vertical direction, gold WII! ! After release, the structure is such that it operates as an ejector bottle, and the cooling air tube is released onto the surface of the injection molded sphere from the core sphere holding bottle slide hole 2 drilled in the cavity I, and the resin or rubber coated on the core sphere L is A mold for injection molding a sphere having a multilayer structure, characterized in that the injection molding sphere is released simultaneously with the cooling of the composition. A patent claim characterized in that an ejector bin/J with a Z pin hole ll is provided, and the injection molded sphere is operated at the same time as the holding bin 4 is pushed out as an ejector bin. A spherical injection molding metal part having a multilayer structure according to item 1.
JP19271281A 1981-12-02 1981-12-02 Spherical injection mold with multilayer structure Expired JPS6026691B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP19271281A JPS6026691B2 (en) 1981-12-02 1981-12-02 Spherical injection mold with multilayer structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP19271281A JPS6026691B2 (en) 1981-12-02 1981-12-02 Spherical injection mold with multilayer structure

Publications (2)

Publication Number Publication Date
JPS5894438A true JPS5894438A (en) 1983-06-04
JPS6026691B2 JPS6026691B2 (en) 1985-06-25

Family

ID=16295797

Family Applications (1)

Application Number Title Priority Date Filing Date
JP19271281A Expired JPS6026691B2 (en) 1981-12-02 1981-12-02 Spherical injection mold with multilayer structure

Country Status (1)

Country Link
JP (1) JPS6026691B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006117134A (en) * 2004-10-22 2006-05-11 Sumitomo Rubber Ind Ltd Core-less elastic crawler and its manufacturing method
CN112959613A (en) * 2021-02-01 2021-06-15 台州市黄岩恒多模业有限公司 Closestool seat ring die

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006117134A (en) * 2004-10-22 2006-05-11 Sumitomo Rubber Ind Ltd Core-less elastic crawler and its manufacturing method
JP4633438B2 (en) * 2004-10-22 2011-02-16 住友ゴム工業株式会社 Mandrel-less elastic crawler and its manufacturing method
CN112959613A (en) * 2021-02-01 2021-06-15 台州市黄岩恒多模业有限公司 Closestool seat ring die

Also Published As

Publication number Publication date
JPS6026691B2 (en) 1985-06-25

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