JPH0529855Y2 - - Google Patents
Info
- Publication number
- JPH0529855Y2 JPH0529855Y2 JP1987138413U JP13841387U JPH0529855Y2 JP H0529855 Y2 JPH0529855 Y2 JP H0529855Y2 JP 1987138413 U JP1987138413 U JP 1987138413U JP 13841387 U JP13841387 U JP 13841387U JP H0529855 Y2 JPH0529855 Y2 JP H0529855Y2
- Authority
- JP
- Japan
- Prior art keywords
- ejector
- pins
- pin
- ejection
- molded product
- 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
- 230000007246 mechanism Effects 0.000 claims description 37
- 238000000465 moulding Methods 0.000 claims description 21
- 238000010137 moulding (plastic) Methods 0.000 claims description 4
- 230000004913 activation Effects 0.000 claims 1
- 230000002093 peripheral effect Effects 0.000 description 8
- 230000001105 regulatory effect Effects 0.000 description 4
- 230000007547 defect Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000012778 molding material Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000006748 scratching Methods 0.000 description 1
- 230000002393 scratching effect Effects 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 230000008685 targeting Effects 0.000 description 1
- 238000001721 transfer moulding 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〕
この考案は、箱形形状のプラスチツク製品等を
形成するプラスチツク成形機に組み込んで成形品
を金型より突出し操作する突出しピンの駆動機構
に関する。[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a drive mechanism for an ejector pin that is incorporated into a plastic molding machine for forming box-shaped plastic products, etc., and operates to eject the molded product from the mold.
周知のようにトランスフアモルード成形機等で
は、成形後に成形品を金型から取り出すための手
段として突出しピンが金型内に組込まれている。
この突出しピンは一端をエジエクタ機構の突出し
板に結合した上で金型を貫通してその先端がキヤ
ビテイ内に突き出すように組み込まれている。こ
こで金型のキヤビテイへ成形材料を注入して成形
品を成形した後、金型を開く際にエジエクタ機構
を駆動して突出しピンをキヤビテイ内へ向けて背
後から突出し操作することにより、成形品が金型
のキヤビテイ内から外方に押し出されるようにな
る。
As is well known, in transfer mold molding machines and the like, ejector pins are incorporated into the mold as means for taking out the molded product from the mold after molding.
The ejector pin has one end connected to the ejector plate of the ejector mechanism, and is inserted through the mold so that its tip protrudes into the cavity. After injecting the molding material into the mold cavity and molding the molded product, when the mold is opened, the ejector mechanism is driven to direct the ejector pin into the cavity and eject it from behind, allowing the molded product to be begins to be extruded outward from the mold cavity.
かかる突出しピンはプラスチツク製品の形状に
応じて通常複数本のピンがキヤビテイ内に分散配
備されており、特に箱形形状のプラスチツク製品
を成形する場合には、その成形品の箱外周縁部に
沿つた複数箇所の他に、カスレ不良の生じ易い箱
内部の底面中央箇所にも成形に伴つて発生するガ
スのベント機能を与えるように金型を貫通して突
出しピンを配備し、該突出しピンの貫通穴を通じ
てガス抜きを行うとともに、成形後には周縁部の
突出しピンと協同して成形品を安定よく突出し操
作するようにしている。 Usually, a plurality of such protruding pins are distributed within the cavity depending on the shape of the plastic product, and in particular, when molding a box-shaped plastic product, they are placed along the outer periphery of the box of the molded product. In addition to the multiple locations where scratches are likely to occur, an ejector pin is provided that penetrates the mold to provide a vent function for the gas generated during molding at the center of the bottom inside the box, where scratching defects are likely to occur. Gas is vented through the through hole, and after molding, the molded product is stably ejected and manipulated in cooperation with ejection pins on the peripheral edge.
ところで前記のように特に箱形形状のプラスチ
ツク製品を成形する場合に、その成形品突出し用
として箱形成形品の周縁部および箱内中央部に対
応させて複数本の突出しピンを金型に分散配備
し、これら突出しピンをエジエクタ機構の突出し
板に一括結合して駆動するようにしたものでは、
時に成形品の排出時に次記のような問題点が発生
する。
By the way, as mentioned above, when molding a box-shaped plastic product, a plurality of ejecting pins are distributed in the mold in order to eject the molded product, corresponding to the periphery of the box-formed product and the center of the box. In the case where these ejector pins are collectively connected to the ejector plate of the ejector mechanism and driven,
Sometimes, the following problems occur when discharging molded products.
すなわち、箱形形状の成形品を対象とした場合
には、その成形品の形状から箱の周縁部に配備し
た突出しピンと比べて箱内底部の中央部に配備し
た突出しピンの長さが箱の深さ分だけ長く、した
がつて成形品を金型のキヤビテイから突出した際
に中央部に位置する長い突出ピンが障害物となつ
て成形品を金型外へ円滑に自動排出することがで
きず、しばしば成形品が中央部の突出しピンに引
つ掛かつたまま機内に停滞することがある。 In other words, when targeting a box-shaped molded product, the length of the ejector pin placed at the center of the bottom of the box is longer than the ejector pin placed at the periphery of the box due to the shape of the molded product. It is long by the depth, so when the molded product is ejected from the mold cavity, the long protrusion pin located in the center becomes an obstacle and the molded product cannot be smoothly and automatically ejected from the mold. Often, the molded product gets stuck in the machine while being caught on the central ejector pin.
しかもこのような成形品の排出トラブルが発生
すると次の成形工程に進むことができず、その都
度成形機の運転を中断して人手等により機内に引
つ掛かつている成形品を取り除く必要がある。こ
のために例えばトランスフアモールド成形機のよ
うに自動運転により連続成形を行うものでは、運
転稼働率低下の原因となる。また仮に成形品が機
内に引つ掛かつたままの状態を放置して次の成形
を行うとすると成形品の二重押し発生の原因とな
る。 Moreover, if such molded product ejection problems occur, it is not possible to proceed to the next molding process, and it is necessary to interrupt the operation of the molding machine and manually remove the molded products that are stuck inside the machine. . For this reason, for example, in a machine that performs continuous molding by automatic operation, such as a transfer molding machine, this causes a reduction in the operating efficiency. Furthermore, if the molded product is left stuck in the machine and the next molding is performed, double pressing of the molded product may occur.
この考案は上記の点にかんがみ成されたもので
あり、その目的は前記した成形品の取出しの際の
トラブル発生を未然に防止できるようにした特に
箱形形状のプラスチツク製品を対象とする成形機
の突出しピン駆動機構を提供することにある。 This idea was made in consideration of the above points, and its purpose is to create a molding machine that is especially suitable for box-shaped plastic products, and which can prevent the troubles that occur when taking out molded products. An object of the present invention is to provide an ejector pin drive mechanism.
上記問題点を解決するために、この考案によれ
ば箱形の成形品を対象に、成形品突出し用として
金型キヤビテイに向けてその周縁部および中央部
に複数本の突出しピンを組込んだプラスチツク成
形機において、前記突出しピンのうち周縁部に位
置する突出しピンはエジエクタ機構の突出し板に
一括して結合し、中央部に位置する突出しピンは
エジエクタ機構と切り離し、かつ突出し操作時に
ピン先端が周縁部の突出しピンの先端より前方に
突き出ないようにその突出しストロークを規制す
る駆動機構に結合し、この駆動機構は、エジエク
タ機構の突出し板の背後に位置して該突出し板を
貫通した突出しピンと結合し合う可動駒部材と、
該可動駒部材を背後からピン突出し方向に付勢す
る駆動ばねと、前記可動駒部材と駆動ばねを収納
し、前記可動駒部材の移動ストロークを規制する
ストツパ部材とからなるものである。
In order to solve the above problems, this invention targets box-shaped molded products and incorporates a plurality of ejection pins into the periphery and center of the mold cavity toward the mold cavity for ejecting the molded product. In a plastic molding machine, the ejector pins located at the peripheral edge of the ejector pins are collectively connected to the ejector plate of the ejector mechanism, and the ejector pins located at the center are separated from the ejector mechanism, and the tips of the pins are It is coupled to a drive mechanism that restricts the ejection stroke of the ejector pin so that it does not protrude forward beyond the tip of the ejector pin on the periphery. Movable piece members that connect to each other,
It consists of a drive spring that urges the movable bridge member from behind in the pin protrusion direction, and a stopper member that accommodates the movable bridge member and the drive spring and restricts the movement stroke of the movable bridge member.
上記の構成で、中央部の突出しピンに対する駆
動機構は、エジエクタ機構の突出し板の背後に位
置して該突出し板を貫通した突出しピンと結合し
合う可動駒部材と、該駒部材を背後からピン突出
し方向に付勢する駆動ばねと、可動駒部材の移動
ストロークを規制するストツパ部材とから構成さ
れたものであり、かつその移動ストロークは突出
し時に突出しピンの先端が金型の端面より前方に
突き出さない程度に規制されている。
In the above configuration, the drive mechanism for the central protrusion pin includes a movable piece member that is located behind the ejector plate of the ejector mechanism and connects with the ejector pin that passes through the ejector plate, and a movable piece member that protrudes the pin from behind the piece member. It is composed of a drive spring that biases the movable piece in the direction and a stopper member that restricts the movement stroke of the movable piece member, and the movement stroke is such that the tip of the ejection pin protrudes forward from the end surface of the mold during ejection. It is regulated to no extent.
かかる構成でエジエクタ機構が後退している待
機状態では前記の可動駒部材が突出し板に押され
て後退位置に拘束されている。ここで成形後にエ
ジエクタ機構を待機位置から前進駆動すると、突
出し板の前進移動とともに可動駒部材の拘束が解
け、中央部に位置する突出しピンはばね付勢を受
けて前方に突出するが、その突出しストロークは
ストツパ部材により規制され、可動駒部材がスト
ツパ部材に係止されてそれ以上の移動が阻止され
る。一方、周縁部の突出しピンはエジエクタ機構
によりさらに前進する。したがつて中央部に位置
する突出しピンは突出し工程の途中までは周縁部
の突出しピンと協同して成形品を突き出すが、そ
れ以降は停止して成形品より離脱する。これに対
し成形品は引続き周縁部の突出しピンに押されて
最終の突出し位置まで進む。これにより中央部の
突出しピンが成形品の機外排出動作の障害物とな
ることがなくなり、成形品を円滑に排出できる。
しかもキヤビテイの中央部に金型を貫通して突出
しピンを配備したことにより、該突出しピンが通
る金型の貫通穴がガス抜き用のベントとして機能
し、成形の際にカスレ不良発生を良好に防止でき
る。 With this configuration, in a standby state in which the ejector mechanism is retracted, the movable bridge member is pushed by the protruding plate and restrained at the retracted position. Here, when the ejector mechanism is driven forward from the standby position after molding, the movable piece member is released from the restraint as the ejector plate moves forward, and the ejector pin located in the center is biased by the spring and protrudes forward. The stroke is regulated by the stopper member, and the movable bridge member is locked by the stopper member to prevent further movement. On the other hand, the ejector pin at the peripheral edge is further advanced by the ejector mechanism. Therefore, the ejector pin located at the center cooperates with the ejector pins at the peripheral edge to eject the molded product until part way through the ejection process, but after that it stops and separates from the molded product. On the other hand, the molded part continues to be pushed by the ejector pins on the periphery and advances to the final ejected position. As a result, the projecting pin at the center does not become an obstacle to the operation of discharging the molded product from the machine, and the molded product can be smoothly discharged.
Moreover, by placing an ejector pin in the center of the cavity that penetrates through the mold, the through hole in the mold through which the ejector pin passes functions as a vent for gas release, reducing the occurrence of scratches during molding. It can be prevented.
第１図，第２図はそれぞれ金型を閉じた成形待
機状態，および成形品の突出し操作状態を示す本
考案実施例の構成図を示すものである。なお図示
は固定，可動側の金型が上下に並べて描かれてい
るが、実際の使用状態では金型が横向きになつて
いる。
FIGS. 1 and 2 are diagrams showing the construction of the embodiment of the present invention, respectively, showing the molding standby state with the mold closed and the ejecting operation state of the molded product. Although the illustration shows the fixed and movable molds arranged vertically, in actual use the molds are oriented horizontally.
図において、１は固定側型板、２は可動側型
板、３はスペーサブロツク、４は可動側取付け板
であり、可動側型板２には箱型形状のプラスチツ
ク製品の形状に対応したキヤビテイ５が形成さ
れ、かつキヤビテイ５に向けて固定側型板１には
成形材料の通るスプールブツシユ６，スプールラ
ンナ７を備えている。一方、可動側型板２を貫通
してキヤビテイ５の底面側にはキヤビテイ周縁部
に位置する突出しピン８，および中央部に位置す
る突出しピン９が配備されており、ここで周縁部
の突出しピン８は一括してエジエクタ機構の突出
し板１０に固定板１１を介して結合されている。
なお１２はエジエクタ機構の突出しロツドであ
る。 In the figure, 1 is a stationary side template, 2 is a movable side template, 3 is a spacer block, and 4 is a movable side mounting plate.The movable side template 2 has a cavity corresponding to the shape of the box-shaped plastic product. 5 is formed, and facing the cavity 5, the stationary mold plate 1 is provided with a spool bush 6 and a spool runner 7 through which the molding material passes. On the other hand, on the bottom side of the cavity 5 passing through the movable mold plate 2, an ejecting pin 8 located at the periphery of the cavity and an ejecting pin 9 located at the center are provided. 8 are collectively connected to a protruding plate 10 of the ejector mechanism via a fixing plate 11.
Note that 12 is a protruding rod of the ejector mechanism.
これに対し中央部の突出しピン９は突出し板１
０を遊嵌式に貫通してその背後に配備した次記構
造の駆動機構１３に結合されている。ここで駆動
機構１３は、突出し板１０の背後に位置して突出
しピン９の後端に結合した段付きの可動駒部材１
４と、該駒部材を背後から前方に向けて突き出す
ように付勢する駆動ばね１５と、駒部材１４の移
動ストロークを規制する鍔付きブツシユとして成
るストツパ部材１６との組立体として構成されて
いる。 On the other hand, the protruding pin 9 in the center is the protruding plate 1.
0 in a loosely-fitted manner and is coupled to a drive mechanism 13 having the following structure and arranged behind it. Here, the drive mechanism 13 includes a stepped movable piece member 1 located behind the protrusion plate 10 and coupled to the rear end of the protrusion pin 9.
4, a drive spring 15 that urges the bridge member to protrude forward from behind, and a stopper member 16 that is a flanged bush that restricts the movement stroke of the bridge member 14. .
ここで駆動機構１３の動作を述べると、まず第
１図のように金型を閉じた待機状態では後退位置
に在るエジエクタ機構の突出し板１０に押されて
可動駒部材１４が後退位置に拘束されている。こ
こから第２図のように金型を開いた状態でエジエ
クタ機構を前進させると駆動機構１３の拘束が解
け、駒部材１４は駆動ばね１５の付勢を受けて突
出しピン９とともに前進移動するが、その途中で
駒部材１４の段付き部がストツパ部材１６の鍔部
に突き当たるとそれ以上の移動が阻止される。し
かも可動駒部材１４の移動ストロークは突出しピ
ン９の先端が可動側型板２の端面より前方に突き
出ないようなストロークＳ１（第１図）に規制さ
れている。なおエジエクタ機構の移動ストローク
Ｓ２は前記駆動機構１３の移動ストロークＳ１に
比べて遥かに大に設定してある。 Here, the operation of the drive mechanism 13 will be described. First, in the standby state with the mold closed as shown in FIG. has been done. From here, when the ejector mechanism is moved forward with the mold open as shown in FIG. When the stepped portion of the bridge member 14 hits the flange portion of the stopper member 16 midway through, further movement is prevented. Furthermore, the movement stroke of the movable piece member 14 is regulated to a stroke S1 (FIG. 1) such that the tip of the ejecting pin 9 does not protrude forward from the end surface of the movable mold plate 2. Note that the movement stroke S2 of the ejector mechanism is set to be much larger than the movement stroke S1 of the drive mechanism 13.
次に上記構成による成形品の突出し操作に付い
て説明する。まず第１図の状態でスプールブツシ
ユ６，スプールランナ７を通じてキヤビテイ５に
成形材料を注入して成形を行う。次いで第２図の
ように可動側型板２を後退させて金型を開くとと
もに、エジエクタ機構を前進駆動させる。これに
より突出し板１０とともに周縁部に位置する突出
しピン８が一括してキヤビテイ内に背後から突出
し、成形品１７をキヤビテイ外に押し出す。また
突出し板１０の前進移動に伴い、先記のように駆
動機構１３の拘束が解けて、中央部の突出しピン
９が駆動ばね１５の付勢を受けてキヤビテイ内に
突出し、周縁部の突出しピン８と協同して成形品
１７を突出し操作する。しかして突出しピン９が
所定の地点まで進むと可動駒部材１４がストツパ
部材１６に係止してその位置に停止する。一方、
成形品１７は引続きエジエクタ機構による突出し
ピン８の突出し操作で第２図に示した最終突出し
位置まで移動し、この位置から機外に落下排出し
て回収される。 Next, the ejection operation of the molded product with the above configuration will be explained. First, in the state shown in FIG. 1, molding material is injected into the cavity 5 through the spool bush 6 and spool runner 7 to perform molding. Next, as shown in FIG. 2, the movable mold plate 2 is moved backward to open the mold, and the ejector mechanism is driven forward. As a result, the protruding pins 8 located on the peripheral edge together with the protruding plate 10 collectively protrude into the cavity from behind, pushing the molded product 17 out of the cavity. In addition, as the protrusion plate 10 moves forward, the drive mechanism 13 is released from the restraint as described above, the protrusion pin 9 at the center is urged by the drive spring 15 and protrudes into the cavity, and the protrusion pin at the periphery 8 to eject and manipulate the molded product 17. When the projecting pin 9 advances to a predetermined point, the movable bridge member 14 is engaged with the stopper member 16 and stopped at that position. on the other hand,
The molded product 17 is then moved to the final ejected position shown in FIG. 2 by ejecting the ejector pin 8 using the ejector mechanism, and is discharged from this position to be recovered.
しかも前記した成形品の突出し操作工程では、
中央部の突出しピン９の先端が可動側型板２の端
面より前方に突き出すことがないようにその突出
しストロークが規制されている。したがつて成形
品１７は中央部の突出しピン９と干渉し合うこと
なく円滑に機外に排出される。これにより中央部
の突出しピン９が障害物となつて成形品１７が突
出しピン９に引つ掛かつたまま機内に停滞する排
出トラブルを確実に防止することができる。 Moreover, in the above-mentioned ejection operation process of the molded product,
The protruding stroke of the central protruding pin 9 is regulated so that the tip thereof does not protrude forward beyond the end surface of the movable mold plate 2. Therefore, the molded product 17 is smoothly ejected out of the machine without interfering with the central protruding pin 9. Thereby, it is possible to reliably prevent the ejection trouble in which the ejecting pin 9 at the center becomes an obstacle and the molded product 17 remains stuck in the machine while being caught on the ejecting pin 9.
以上述べたようにこの考案によれば、箱形の成
形品を対象に、成形品突出し用として金型キヤビ
テイに向けてその周縁部および中央部に複数本の
突出しピンを組込んだプラスチツク成形機におい
て、前記突出しピンのうち周縁部に位置する突出
しピンはエジエクタ機構の突出し板に一括して結
合し、中央部に位置する突出しピンはエジエクタ
機構と切り離し、かつ突出し操作時にピン先端が
周縁部の突出しピンの先端より前方に突き出ない
ようにその突出しストロークを規制する駆動機構
に結合し、この駆動機構は、エジエクタ機構の突
出し板の背後に位置して該突出し板を貫通した突
出しピンと結合し合う可動駒部材と、該可動駒部
材を背後からピン突出し方向に付勢する駆動ばね
と、前記可動駒部材と駆動ばねを収納し、前記可
動駒部材の移動ストロークを規制するストツパ部
材とにより構成したことにより、成形品突出し操
作の安定化，並びに中央部の突出しピン貫通穴を
利用したガス抜きベント機能による成形カスレ不
良の発生防止を図りつつ、しかも中央部の突出し
ピンが障害物となつて成形品の排出を阻害するこ
とを確実に防止できる等、特に箱形の成形品に対
してその突出し、機外排出等の取扱面で優れた効
果を発揮することができる。
As described above, according to this invention, a plastic molding machine for box-shaped molded products incorporates a plurality of ejection pins at the periphery and center of the mold cavity toward the mold cavity for ejecting the molded product. The ejector pins located at the peripheral edge of the ejector pins are collectively coupled to the ejector plate of the ejector mechanism, and the ejector pins located at the center are separated from the ejector mechanism, and the tips of the pins are connected to the peripheral edge during the ejecting operation. It is coupled to a drive mechanism that restricts the ejection stroke of the ejector pin so that it does not protrude forward beyond the tip thereof, and this drive mechanism is coupled to the ejection pin that is located behind the ejector plate of the ejector mechanism and passes through the ejector plate. It is constituted by a movable bridge member, a drive spring that biases the movable bridge member from behind in a direction in which the pin protrudes, and a stopper member that accommodates the movable bridge member and the drive spring and regulates the movement stroke of the movable bridge member. This stabilizes the ejection operation of the molded product and prevents molding defects due to the gas release vent function that utilizes the ejection pin through hole in the center, while also preventing molding defects due to the ejection pin in the center becoming an obstacle. It is possible to reliably prevent the discharge of the product from being obstructed, and it is particularly effective for handling box-shaped molded products such as their protrusion and discharge outside the machine.
第１図，第２図はそれぞれ金型を閉じた成形待
機状態，および成形後の成形品突出し操作状態を
示す本考案実施例の構成図である。各図におい
て、
１……固定側型板、２……可動側型板、５……
キヤビテイ、８……周縁部に位置する突出しピ
ン、９……中央部に位置する突出しピン、１０…
…エジエクタ機構の突出し板、１３……中央部の
突出しピンに対する駆動機構、１４……可動駒部
材、１５……駆動ばね、１６……ストツパ部材、
Ｓ１……周縁部の突出しピンの突出しストローク
量、Ｓ２……中央部の突出しピンの突出しストロ
ーク量。
FIGS. 1 and 2 are configuration diagrams of an embodiment of the present invention, respectively showing a molding standby state with the mold closed and a molded product ejection operation state after molding. In each figure, 1... Fixed side template, 2... Movable side template, 5...
Cavity, 8... Protrusion pin located at the periphery, 9... Protrusion pin located at the center, 10...
...Protruding plate of ejector mechanism, 13... Drive mechanism for the central protruding pin, 14... Movable piece member, 15... Drive spring, 16... Stopper member,
S1...Protrusion stroke amount of the ejection pin in the peripheral portion, S2...Protrusion stroke amount of the ejection pin in the center portion.
Claims (1)
金型キヤビテイに向けてその周縁部および中央部
に複数本の突出しピンを組込んだプラスチツク成
形機において、前記突出しピンのうち周縁部に位
置する突出しピンはエジエクタ機構の突出し板に
一括して結合し、中央部に位置する突出しピンは
エジエクタ機構と切り離し、かつ突出し操作時に
ピン先端が周縁部の突出しピンの先端より前方に
突き出ないようにその突出しストロークを規制す
る駆動機構に結合し、この駆動機構は、エジエク
タ機構の突出し板の背後に位置して該突出し板を
貫通した突出しピンと結合し合う可動駒部材と、
該可動駒部材を背後からピン突出し方向に付勢す
る駆動ばねと、前記可動駒部材と駆動ばねを収納
し、前記可動駒部材の移動ストロークを規制する
ストツパ部材とからなることを特徴とするプラス
チツク成形機の突出しピン起動機構。 In a plastic molding machine that targets a box-shaped molded product and incorporates a plurality of ejection pins at the periphery and center of the mold cavity toward the mold cavity for ejecting the molded product, the ejector pins are located at the periphery of the ejection pins. The ejector pins located at the center are connected together to the ejector plate of the ejector mechanism, and the ejector pins located in the center are separated from the ejector mechanism, and the tips of the pins are prevented from protruding forward than the tips of the ejector pins on the periphery during the ejector operation. a movable piece member coupled to a drive mechanism that regulates the ejection stroke, the drive mechanism being coupled to an ejection pin located behind a protrusion plate of the ejector mechanism and passing through the ejection plate;
A plastic device comprising: a drive spring that urges the movable bridge member from behind in a direction in which the pin protrudes; and a stopper member that accommodates the movable bridge member and the drive spring and regulates the movement stroke of the movable bridge member. Molding machine ejector pin activation mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987138413U JPH0529855Y2 (en) | 1987-09-10 | 1987-09-10 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987138413U JPH0529855Y2 (en) | 1987-09-10 | 1987-09-10 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6442114U JPS6442114U (en) | 1989-03-14 |
| JPH0529855Y2 true JPH0529855Y2 (en) | 1993-07-30 |
Family
ID=31400727
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987138413U Expired - Lifetime JPH0529855Y2 (en) | 1987-09-10 | 1987-09-10 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0529855Y2 (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5831727A (en) * | 1981-08-18 | 1983-02-24 | Sanyo Electric Co Ltd | Mold for injection molding |
| JPS58188641A (en) * | 1982-04-30 | 1983-11-04 | Mitsubishi Heavy Ind Ltd | Multiple extruding device of injection molding machine |
-
1987
- 1987-09-10 JP JP1987138413U patent/JPH0529855Y2/ja not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5831727A (en) * | 1981-08-18 | 1983-02-24 | Sanyo Electric Co Ltd | Mold for injection molding |
| JPS58188641A (en) * | 1982-04-30 | 1983-11-04 | Mitsubishi Heavy Ind Ltd | Multiple extruding device of injection molding machine |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6442114U (en) | 1989-03-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US2483094A (en) | Stripping and knockout mechanism for molding dies | |
| US3196483A (en) | Molding device | |
| JPH081680A (en) | Mold apparatus | |
| JPH0529855Y2 (en) | ||
| JP3354701B2 (en) | Injection mold equipment | |
| JPS62255109A (en) | Molded form ejecting device for injection molder | |
| JPH07164490A (en) | Mold for injection molding | |
| JP3191036B2 (en) | Injection mold equipment | |
| JPH11277589A (en) | Mold for injection molding | |
| JPH0736730Y2 (en) | Injection mold | |
| JPH02164509A (en) | Injection die | |
| JP2564791Y2 (en) | Automatic gate cutting device for injection mold | |
| JP3079863B2 (en) | How to remove the mold runner | |
| JPS63295224A (en) | Mold assembly for resin molding | |
| JP2667996B2 (en) | Injection mold equipment | |
| JPS6217219Y2 (en) | ||
| JPH0725107B2 (en) | Injection mold | |
| JP3301192B2 (en) | Mold equipment for injection molding | |
| JPS5917932B2 (en) | Mold release method and molding mold for molded products | |
| JPH077133Y2 (en) | Injection mold | |
| JPS6327224A (en) | Separation mechanism between product and sprue runner in mold for injection molding | |
| JPH02169223A (en) | Injection molding die | |
| JPS6017300Y2 (en) | injection mold | |
| JPH0511009B2 (en) | ||
| KR960005803Y1 (en) | Injection molding mould |