JPS62297127A - Molding tool for coating pin-like body with resin - Google Patents

Molding tool for coating pin-like body with resin

Info

Publication number
JPS62297127A
JPS62297127A JP13978186A JP13978186A JPS62297127A JP S62297127 A JPS62297127 A JP S62297127A JP 13978186 A JP13978186 A JP 13978186A JP 13978186 A JP13978186 A JP 13978186A JP S62297127 A JPS62297127 A JP S62297127A
Authority
JP
Japan
Prior art keywords
pin
retainer
resin
sliding pin
shaped body
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP13978186A
Other languages
Japanese (ja)
Inventor
Masaharu Furukawa
雅晴 古川
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.)
Fuji Electric Co Ltd
Original Assignee
Fuji Electric 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 Fuji Electric Co Ltd filed Critical Fuji Electric Co Ltd
Priority to JP13978186A priority Critical patent/JPS62297127A/en
Publication of JPS62297127A publication Critical patent/JPS62297127A/en
Pending 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
    • B29C45/14073—Positioning or centering articles in the mould using means being retractable during injection
    • 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
    • B29C45/14073—Positioning or centering articles in the mould using means being retractable during injection
    • B29C2045/14081—Positioning or centering articles in the mould using means being retractable during injection centering means retracted by the injection pressure
    • 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
    • B29C2045/14163—Positioning or centering articles in the mould using springs being part of the positioning means

Abstract

PURPOSE:To make it possible to mold a molded product with a pin-like body coated with resin by one process of molding by a method wherein a support, a sliding pin, a spring energizing means and an engaging piece are put into actuation by the pressure of resin poured in a mold cavity in the injection molding of the resin. CONSTITUTION:When the coating molding is intended while a molding tool is closed, a support 20 is slided along the wall surface of a cavity 14 by the pressure of resin poured in the cavity 14 against a spring energizing means 24 until the support engages with the engaging part of an engaging member 30 so as to shift the engaging member by cam action in order to release the engagement of the other end part of a sliding pin 26, which is anchored by the anchoring part 32 of the engaging member. As a result, the sliding pin 26 is shifted by means of a spring energizing means 24 so as to release the releasable support of the sliding pin 26 to a pin-like body 21 in order to fill a space developed by the shifting of the sliding pin with the resin. The molded product with the pin-like body coated with the resin is obtained by being ejected by the action of an ejector pin 34 after the opening of the molding tool.

Description

【発明の詳細な説明】[Detailed description of the invention]

３、発明の詳細な説明 3. Detailed description of the invention

【発明の属する技術分野】[Technical field to which the invention pertains]

本発明は射出成形によってピン禮体をインサートしたピ
ン状体の樹脂被覆成形品を成形する金型に関する。The present invention relates to a mold for molding a resin-coated molded product of a pin-shaped body into which a pin-shaped body is inserted by injection molding.

【従来技術とその問題点】[Prior art and its problems]

この種の成形品を成形するには、従来工程を２工程に分
けて成形していた。すなわち第５図（ａ）に示すように
、（可動型）ｌｌａの中に、インサートして樹脂ｍ覆す
る被加工物のピン状体２１の半分を挿入して支承する孔
と、ピン状体２１を成形後に押し出すためのエジェクタ
ピン３４ａとを設け、該（可動型Ｈ１ａと、成形キャビ
ティ１４ａを設けた固定型１２ａを閉じて、成形キャビ
ティ１４ａに樹脂を射出成形して、型を開いてエジェク
タピン３４ａで第５図世）に示す半成形品３５をエジェ
クトして第１工程を終わる。 続いて第６図ｆａｌに示すように、（可動型）ｌｌｂの
中に、半成形品３５を挿入して支承する孔と、エジェク
タピン３４ｂとを設け、該（可動型）１１ｂと成形キャ
ビティ１４ｂを設けた固定型１２ｂを閉じて、成形キャ
ビティ１４ｂに樹脂を射出成形して、型を開いてエジェ
クタピン３４ｂで第６図（ト））に示す成形品３６をエ
ジェクトして第２工程を終る成形金型が知られている。 前記従来例では成形工程が２工程となるために、第１工
程の成形部と第２工程の成形部の境界３７が完全に密着
せず、水や各種溶液中で該ピン状体樹脂被覆品を使用す
ると、境界３７から液が浸入しピン状体２１が腐食した
り、着色した液中に使用した後、他の液中で使用すると
境界３７に入っていた着色した液が出てきて後者の液を
変色１汚染させるという欠点があった。 また成形が２工程のため、成形に要す時間が長く、人手
を要しコストが高いという欠点があった。In order to mold this type of molded product, the conventional process was divided into two steps. That is, as shown in FIG. 5(a), there is a hole in which half of the pin-shaped body 21 of the workpiece to be inserted and covered with resin is inserted and supported in the (movable type) lla, and a pin-shaped body The movable mold H1a and the fixed mold 12a provided with the molding cavity 14a are closed, the resin is injected into the molding cavity 14a, and the mold is opened to extrude the ejector pin 34a. The first step is completed by ejecting the semi-molded product 35 shown in Figure 5 using the pin 34a. Subsequently, as shown in FIG. 6fal, a hole for inserting and supporting the semi-molded product 35 and an ejector pin 34b are provided in the (movable mold) llb, and the (movable mold) 11b and the molding cavity 14b are formed. The fixed mold 12b provided with is closed, resin is injected into the molding cavity 14b, the mold is opened, and the molded product 36 shown in FIG. Molding molds are known. In the conventional example, since the molding process is two steps, the boundary 37 between the molded part in the first step and the molded part in the second step does not come into complete contact with each other, and the pin-shaped resin-coated product does not adhere completely in water or various solutions. If you use it, liquid may enter from the boundary 37 and corrode the pin-shaped body 21, or if you use it in a colored liquid and then use it in another liquid, the colored liquid that entered the boundary 37 will come out and cause damage to the pin-shaped body 21. This had the disadvantage of causing discoloration and contamination of the liquid. Furthermore, since the molding is done in two steps, it takes a long time to mold, requires manpower, and is expensive.

【発明の目的】[Purpose of the invention]

本発明は成形部の境界を無くし、しかも１工程の成形で
ピン状体樹脂被覆品を成形できるピン状体の樹脂被覆用
成形金型を提供することを目的とする。SUMMARY OF THE INVENTION An object of the present invention is to provide a mold for resin-coating a pin-shaped body, which eliminates boundaries between molding parts and can mold a resin-coated pin-shaped body in one molding step.

【発明の要点】[Key points of the invention]

本発明は金型の一方の割型部分（可動型）中に、成形キ
ャビティの壁面に沿って滑動自在に挿入されたその内孔
壁に樹脂被覆をすべき被加工物のピン状体を保持可能な
筒状体として構成されかつ割型部分に対する位置決めの
ためのストッパ面を備えた保持子と、該保持子の内孔壁
に沿って滑動自在にその一端部が挿入され該一端部によ
り保持子の内孔に挿入されるピン状体を支承することが
できる滑動ピンが設けられている。 保持子と滑動ピンとをお互いに遠ざけるように作用する
ばね付勢手段が設けられている。係合子が設けられてお
り、該係合子は保持子に対する係合部が保持子の移動に
よって係合して係合子を移動させ、それによって滑動ピ
ンの他端部が係合子の係止部により係止されていたのを
解除するようになっている。 本発明は樹脂の射出成形で成形キャビティ内に注入され
る樹脂圧力によって前記保持子、滑動ピン、ばね付勢手
段、係合子が作動して１工程の成形でピン状体樹脂被覆
品を成形できるようにしたピン状体の樹脂被覆用成形金
型である。 すなわち被覆成形開始前には滑動ピンはばね付勢手段に
より付勢され他端部が係合子の係止部に当接して係止さ
れている。保持子はばね付勢手段でそのストッパ面が割
型部分に当接して位置決めされた状態で、保持子の内孔
にピン状体を挿入し滑動ピンの一端部に当接するまで押
込んだ所定位置にピン状体を保持する。 金型を閉じて行う被覆成形時には、キャビティ内に注入
される樹脂圧力により保持子がばね付勢手段に抗してキ
ャビティの壁面に沿って滑動し、遵には保持子が係合子
の保合部に係合し、カム作用で係合子を移動させて、係
合子の係止部により修止されていた滑動ピンの他端部の
係止が解除され、ばね付勢手段により滑動ピンは移動し
てピン状体に対する支承が解除され、この空所に樹脂が
充填される。成形型を開きエジェクタピンの作動により
ピン状体樹脂被覆成形品がエジェクトされて得られる。 成形品がエジェクトされると前記の構成ａｔｌは原位置
に復元し、次の作業にそなえる。The present invention holds a pin-shaped body of a workpiece whose inner hole wall is to be coated with resin, which is inserted into one split mold part (movable mold) of a mold so as to be slidable along the wall surface of a molding cavity. a retainer configured as a flexible cylindrical body and provided with a stopper surface for positioning with respect to the split mold part, one end of which is slidably inserted along the inner hole wall of the retainer and held by the one end; A sliding pin is provided which can support a pin-shaped body inserted into the inner bore of the child. Spring biasing means are provided which act to force the retainer and sliding pin away from each other. An engaging element is provided, and the engaging part of the engaging element is engaged with the retainer by movement of the retainer to move the engaging element, whereby the other end of the sliding pin is moved by the engaging part of the engaging element. It is designed to release the lock. In the present invention, the retainer, the sliding pin, the spring biasing means, and the engaging element are actuated by the resin pressure injected into the molding cavity during resin injection molding, and a pin-shaped resin-coated product can be molded in one molding step. This is a mold for resin coating a pin-shaped body. That is, before the start of the covering molding, the sliding pin is biased by the spring biasing means, and the other end thereof is in contact with and locked in the locking portion of the engaging element. The retainer is positioned with its stopper surface in contact with the split mold part by the spring biasing means, and a pin-shaped body is inserted into the inner hole of the retainer and pushed until it comes into contact with one end of the sliding pin. Hold the pin in position. During coating molding with the mold closed, the retainer slides along the wall of the cavity against the spring biasing means due to the resin pressure injected into the cavity. The engaging element is moved by the cam action, and the locking of the other end of the sliding pin that was fixed by the locking part of the engaging element is released, and the sliding pin is moved by the spring biasing means. The support for the pin-shaped body is released, and this cavity is filled with resin. The mold is opened and an ejector pin is operated to eject a pin-shaped resin-coated molded product. When the molded product is ejected, the above structure atl is restored to its original position and is ready for the next operation.

【発明の実施例】[Embodiments of the invention]

第１図は本発明の実施例を示す断面図で、金型の割型部
分１１（以下可動型１１と記す）に設けた成形キャビテ
ィ１４の壁面に沿って滑動自在に挿入された保持子２０
が設け′られている。該保持子２０は樹脂被覆すべき被
加工品のピン状体２１を保持するもので、筒状体として
構成された内孔壁２２にピン状体２１を保持する。また
該保持子２０は可動型１１に対する位置決めのためのス
トッパ面２３を備え、被覆成形開始前には保持子２０が
ばね付勢手段２４によりそのストッパ面２３が可動型１
１に当接して位置決めされた状態にある。該保持子２０
の内孔壁２２に沿って滑動自在にその一端部が挿入され
た滑動ピン２６が設けられている。該滑動ピン２６は該
一端部により保持子２０の内孔に挿入されるピン状体２
１を支承可能である。該滑動ピン２６と前記保持子２０
とを互いに遠ざけるようにばね付勢手段２４が設けられ
ている。保合子３０が設けられ、該保合子３０は保持子
２０に対する保合部３１と、滑動ピン２６の他端部に対
する係止部３２を備えている。この他通常の成形金型の
構成機構の固定型１２と、エジェクタピン３４を備えて
成形金型を構成している。 第２図ないし第４図は本発明のピン状体の樹脂被覆用成
形金型の作用の説明図で、図中交差斜線で示す切断面１
４は成形キャビティと充填された樹脂部分を示す。 第２図に示す前の段階として、可動型１１は開いており
ピン状体２１を挿入支持させて可動型１１を閉じ、第１
図の状態として溶融樹脂を成形キャビティ１４に注入し
て第２図の状態とする。保持子２０はばね付勢手段２４
により、その・ストッパ面２３が可動型１１に当接して
位置決めされた状態にある。滑動ピン２６は、ばね付勢
手段２４で保持子２０と互いに遠ざけるように付勢され
ており、滑動ピン２６の他端部は、係合子３０の係止部
３２に当接してその移動が係止されている。この状態で
保持子２０の内孔にピン状体２１を挿入し、内孔壁２２
と滑動ピン２６の一端部とによりピン状体２１が図の所
定位置に保持されており、第２図に示すように樹脂が注
入充填されてもピン状体２１はその位置を変えない。 第３図はさらに樹脂注入が進んだ状態を示し、キャビテ
ィ１４内に注入される樹脂圧力により保持子２０が、ば
ね付勢手段２４に抗してキャビティの壁面に沿って滑動
している状態を示している。この段階では滑動ピン２６
は、その他端部が係合子３０の係止部３２で係止されて
おり、その一端部はピン状体２１を支承している。 さらに樹脂注入が進むと第４図になるが、その前に図示
してない段階で、キャビティ１４内に注入される樹脂圧
力により保持子２０は第３図に示す位置よりさらに滑動
して、係合子３０の係合部３１に当接して、カム作用に
よって係合子を移動させて第４図に示す状態となる。保
持子２０の内孔壁２２はピン状体２１の保持から外れ、
一時滑動ピン２６の一端部のみで支承されており、注入
樹脂は滑動ピン２６の一端部のピン状体２１に当接して
いる狭幅部を残してピン状体２１を包み込む。 係合子３０が移動すると係止部３２で係止されていた滑
動ピン２６の他端部の係止が解かれ、滑動ピン２６がば
ね付勢手段２４の付勢力により移動してピン状体２１の
支承を解除するようにし、ここに生じた空所は注入樹脂
によって注入されピン状体２１を完全に包み込み樹脂注
入を終る。 可動型１１を開き、エジェクタピン３４を作動させて滑
動ピン２６を作動させ成形品３６をエジェクトする。成
形品３６が可動型１１から取り去られると、ばね付勢手
段２４の付勢力で、保持子２０は成形キャビティ１４の
壁面に沿って滑動し、ストッパ面２３が可動型１１に当
接して位置決めされた状態に復元する。 滑動ピン２６の係合子３０に係止する他端部は、エジェ
クタピン３４によって保持子２０側に押圧されており、
保持子２０が復元動作に入ると、係合子３０の係合部３
１の保持子２０との保合が解かれて、保合子３０は滑動
ピン２６を係止する位置に復元し、エジェクタピン３４
がニジエフを動作終了により復元すると、ばね付勢手段
２４の押圧力で滑動ピン２６の他端部は、係合子３０の
係止部３２に当接して係止される。すなわち各構成機構
は、第１図に示す状態で可動型１１を開いた状態に復元
する。以降は前記の説明の順序によって次の成形品を成
形する。FIG. 1 is a sectional view showing an embodiment of the present invention, in which a retainer 20 is slidably inserted along the wall surface of a molding cavity 14 provided in a split mold part 11 (hereinafter referred to as movable mold 11) of a mold.
is provided. The holder 20 holds a pin-shaped body 21 of a workpiece to be coated with resin, and holds the pin-shaped body 21 in an inner hole wall 22 configured as a cylindrical body. Further, the retainer 20 is provided with a stopper surface 23 for positioning with respect to the movable mold 11, and before the start of coating molding, the retainer 20 is pressed against the movable mold 1 by a spring biasing means 24.
1 and is in a positioned position. The retainer 20
A sliding pin 26 is provided, one end of which is slidably inserted along the inner hole wall 22. The sliding pin 26 is a pin-shaped body 2 that is inserted into the inner hole of the retainer 20 by the one end.
1 can be supported. The sliding pin 26 and the retainer 20
A spring biasing means 24 is provided to move the two away from each other. A retainer 30 is provided, and the retainer 30 includes a retaining portion 31 for the retainer 20 and a locking portion 32 for the other end of the sliding pin 26. In addition, the molding die includes a fixed mold 12, which is a constituent mechanism of a normal molding die, and an ejector pin 34. FIGS. 2 to 4 are explanatory diagrams of the function of the mold for resin coating a pin-shaped body according to the present invention, and the cut surface 1 shown by crossed diagonal lines in the figure
4 shows the molding cavity and the filled resin part. As a step before shown in FIG. 2, the movable mold 11 is opened, the pin-shaped body 21 is inserted and supported, the movable mold 11 is closed, and the first
In the state shown in the figure, molten resin is injected into the molding cavity 14 to create the state shown in FIG. 2. The retainer 20 has a spring biasing means 24
As a result, the stopper surface 23 is in contact with the movable die 11 and positioned. The sliding pin 26 is biased by a spring biasing means 24 to move away from the retainer 20, and the other end of the sliding pin 26 comes into contact with the locking portion 32 of the engaging element 30 to prevent its movement. It has been stopped. In this state, the pin-shaped body 21 is inserted into the inner hole of the retainer 20, and the inner hole wall 22
The pin-shaped body 21 is held in a predetermined position as shown in the figure by the and one end of the sliding pin 26, and the pin-shaped body 21 does not change its position even if the resin is injected and filled as shown in FIG. FIG. 3 shows a state in which the resin injection has further progressed, and the retainer 20 is sliding along the wall surface of the cavity against the spring biasing means 24 due to the resin pressure injected into the cavity 14. It shows. At this stage, the sliding pin 26
The other end thereof is locked by a locking portion 32 of the engaging member 30, and one end thereof supports the pin-shaped body 21. As the resin injection progresses further, the state shown in FIG. 4 occurs, but before that, at a stage not shown, the retainer 20 slides further from the position shown in FIG. 3 due to the resin pressure injected into the cavity 14, and is engaged The engaging member 30 comes into contact with the engaging portion 31 of the engaging member 30, and is moved by the cam action to reach the state shown in FIG. 4. The inner hole wall 22 of the retainer 20 is released from the pin-shaped body 21,
The temporary sliding pin 26 is supported only at one end, and the injected resin wraps around the pin-shaped body 21 leaving a narrow portion at one end of the sliding pin 26 in contact with the pin-shaped body 21. When the engager 30 moves, the other end of the sliding pin 26 that has been locked by the locking portion 32 is released, and the sliding pin 26 is moved by the urging force of the spring urging means 24 and the pin-shaped body 21 The support of the pin body 21 is released, and the cavity created here is injected with injection resin, completely enveloping the pin-shaped body 21, and the resin injection is completed. The movable mold 11 is opened, the ejector pin 34 is activated, the sliding pin 26 is activated, and the molded product 36 is ejected. When the molded product 36 is removed from the movable mold 11, the retainer 20 slides along the wall surface of the molding cavity 14 due to the biasing force of the spring biasing means 24, and the stopper surface 23 abuts against the movable mold 11 and is positioned. restore to the original state. The other end of the sliding pin 26 that engages the engagement element 30 is pressed toward the retainer 20 by the ejector pin 34.
When the retainer 20 enters the restoring operation, the engaging portion 3 of the engaging member 30
1 is released, the retainer 30 returns to the position where it locks the sliding pin 26, and the ejector pin 34
When the operation is completed, the other end of the sliding pin 26 comes into contact with the locking portion 32 of the engaging member 30 and is locked by the pressing force of the spring biasing means 24. That is, each component mechanism restores the movable mold 11 to the open state in the state shown in FIG. Thereafter, the next molded product is molded in the order described above.

【発明の効果】　　・ 本発明によれば、被加工物の樹脂被覆されるピン状体を
挿入支承する滑動自在の保持子と滑動ピンと、保持子と
滑動ピ、ンとを互いに遠ざけるように設けられたばね付
勢手段と、保持子と滑動ピンの運動に係る係−子とを可
動型中に設けた成形金型で、これにより保持子が注入さ
れる樹脂圧力でばね付勢手段に抗して滑動し、該滑動の
終期に係合子の保合部に係合してカム作用によって係合
子を移動させるため、今迄係合子の係止部で係止されて
いた滑動ピンの係止が解除され、ばね付勢手段の付勢力
によって移動してピン状体の支承を解除するようにした
ので、従来例で２工程を要し、境界部が完全に密着しな
いために生じる欠点と、２工程のため成形に要する時間
が長く、人手を要しコストが高いという欠点を解消して
、ｌ工程でピン状体を樹脂被覆した成形品が得られるピ
ン状体の樹脂被覆用成形金型が提供可能となる。[Effects of the Invention] - According to the present invention, a slidable retainer and a sliding pin that insert and support a resin-coated pin-like body of a workpiece, and a retainer and a sliding pin are provided so as to be spaced apart from each other. This is a mold in which a movable mold is provided with a spring biasing means and a retainer related to the movement of the retainer and sliding pin, so that the retainer resists the spring biasing means by the resin pressure injected. At the end of the sliding movement, the engaging element engages with the retaining part of the engaging element and moves the engaging element by the cam action. Since the support of the pin-shaped body is released by being moved by the biasing force of the spring biasing means, two steps are required in the conventional example, and there are two drawbacks: A mold for resin-coating pin-shaped bodies that eliminates the disadvantages of long molding times, high labor costs, and high costs due to the process, and allows molded products with resin-coated pin-shaped bodies to be obtained in the first process. Available.

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

第１図は本発明の実施例を示す断面図、第２図ないし第
４図は各々本発明の作用の各段階の説明図、第５図は従
来例の第１工程を示す説明図、第６図は従来例の第２工
程を示す説明図である。 １１：割型部分　（可動型）、１２：固定型、１４：成
形キャビティ、２０：保持子、２１：ピン状体、２３：
ストッパ面、２４：ばね付勢手段、２６：滑動ピン、第
１図 （Ｑ） 第５図 第６図FIG. 1 is a sectional view showing an embodiment of the present invention, FIGS. 2 to 4 are explanatory views of each stage of the action of the present invention, and FIG. 5 is an explanatory view showing the first step of the conventional example. FIG. 6 is an explanatory diagram showing the second step of the conventional example. 11: Split mold part (movable mold), 12: Fixed mold, 14: Molding cavity, 20: Retainer, 21: Pin-shaped body, 23:
Stopper surface, 24: Spring biasing means, 26: Sliding pin, Fig. 1 (Q) Fig. 5 Fig. 6

Claims (1)

【特許請求の範囲】[Claims] １）金型の一方の割型部分に設けられた成形キャビティ
の壁面に沿って滑動自在に挿入され、その内孔部に樹脂
被覆をすべきピン状体を保持可能な筒状体として構成さ
れかつ割型部分に対する位置決めのためのストッパ面を
備えた保持子と、該保持子の内孔壁に沿って滑動自在に
その一端部が挿入され該一端部により保持子の内孔に挿
入されるピン状体を支承可能な滑動ピンと、該滑動ピン
と前記保持子とを互いに遠ざけるように設けられたばね
付勢手段と、保持子に対する係合部と滑動ピンの他端部
に対する係止部とを備えた係合子とを備えてなり、被覆
成形開始前には滑動ピンの他端部が係合子の係止部によ
り係止されかつ保持子がばね付勢手段によりそのストッ
パ面が割型部分に当接して位置決めされた状態で保持子
の内孔壁と滑動ピンの一端部とによりピン状体を所定位
置に保持し、被覆成形時にはキャビティ内に注入される
樹脂圧力により保持子がばね付勢手段に抗してキャビテ
ィの壁面に沿って滑動し、かつ保持子が係合子の係合部
に係合したとき係合子の滑動ピンに対する係止が解かれ
て滑動ピンがばね付勢手段の付勢力によりピン状体に対
する支承を解除するようにしたことを特徴とするピン状
体の樹脂被覆用成形金型。1) A cylindrical body that is slidably inserted along the wall of a molding cavity provided in one split part of the mold, and capable of holding a pin-shaped body to be coated with resin in its inner hole. and a retainer provided with a stopper surface for positioning with respect to the split mold part, one end of which is slidably inserted along the inner hole wall of the retainer and inserted into the inner hole of the retainer by the one end. A sliding pin capable of supporting a pin-shaped body, a spring biasing means provided to move the sliding pin and the retainer away from each other, an engaging portion for the retainer, and a locking portion for the other end of the sliding pin. The other end of the sliding pin is locked by the locking part of the engager before the start of coating molding, and the retainer has its stopper surface brought into contact with the split mold part by means of a spring biasing means. The pin-shaped body is held in a predetermined position by the inner hole wall of the retainer and one end of the sliding pin in a state in which they are in contact with each other, and during cover molding, the retainer is actuated by spring biasing means due to the resin pressure injected into the cavity. When the retainer slides along the wall surface of the cavity against the force and engages with the engaging portion of the engager, the engager is released from the sliding pin and the sliding pin is moved by the biasing force of the spring biasing means. 1. A mold for resin coating a pin-shaped body, characterized in that support for the pin-shaped body is released by .
JP13978186A 1986-06-16 1986-06-16 Molding tool for coating pin-like body with resin Pending JPS62297127A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13978186A JPS62297127A (en) 1986-06-16 1986-06-16 Molding tool for coating pin-like body with resin

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13978186A JPS62297127A (en) 1986-06-16 1986-06-16 Molding tool for coating pin-like body with resin

Publications (1)

Publication Number Publication Date
JPS62297127A true JPS62297127A (en) 1987-12-24

Family

ID=15253271

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13978186A Pending JPS62297127A (en) 1986-06-16 1986-06-16 Molding tool for coating pin-like body with resin

Country Status (1)

Country Link
JP (1) JPS62297127A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109070421A (en) * 2016-04-28 2018-12-21 恩普乐斯股份有限公司 The driving mechanism of sliding part

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109070421A (en) * 2016-04-28 2018-12-21 恩普乐斯股份有限公司 The driving mechanism of sliding part
CN109070421B (en) * 2016-04-28 2020-07-28 恩普乐斯股份有限公司 Driving mechanism of sliding part

Similar Documents

Publication Publication Date Title
KR0168694B1 (en) Apparatus and method for local pressurizing type injection molding
JPS59500661A (en) Insert molding method and retractable insert molding pin
JPS62297127A (en) Molding tool for coating pin-like body with resin
JPS6152779B2 (en)
JP3240605B2 (en) Insert molding method
US5158736A (en) Method for stripping molded U-shaped article from mold
JP3114028B2 (en) Hollow injection molding method
JPH01209119A (en) Mold for molding mold
JPS62255109A (en) Molded form ejecting device for injection molder
JP2000071259A (en) Molding ejecting device and method for ejecting holding
JP2837335B2 (en) Mold structure for thin wall molding
JP3312209B2 (en) Mold equipment for insert molding
JPH0131456Y2 (en)
JPS6031648B2 (en) Method for cutting the sprue of injection molded products
JPH0511016B2 (en)
JPS5634418A (en) Releasing method for molded article and molding die
JP3138629B2 (en) Mold equipment
JP2005279947A (en) Mold and insert molding method
JPH08281716A (en) Injection mold
JPH0735074B2 (en) Molded product and method of stripping molded product
JPH01202412A (en) Finishing method for injection-molded product
JPH08323813A (en) Compression injection mold for thermoplastic resin, and method for compression injection molding using the mold
JPH05192976A (en) Molding control method for injection molding machine and device therefor
JPS6217219Y2 (en)
JPH0966546A (en) Mold