JPH11277579A - Mold for insert molding and method for insert molding - Google Patents

Mold for insert molding and method for insert molding

Info

Publication number
JPH11277579A
JPH11277579A JP10081738A JP8173898A JPH11277579A JP H11277579 A JPH11277579 A JP H11277579A JP 10081738 A JP10081738 A JP 10081738A JP 8173898 A JP8173898 A JP 8173898A JP H11277579 A JPH11277579 A JP H11277579A
Authority
JP
Japan
Prior art keywords
insert
mold
shaped
pipe
end side
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
JP10081738A
Other languages
Japanese (ja)
Other versions
JP3668369B2 (en
Inventor
Tadashi Mitsuma
正 三間
Takayuki Ito
尊之 伊藤
Haruo Gonda
治男 権田
Hiromi Otani
博己 大谷
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.)
Sumitomo Riko Co Ltd
Mitsubishi Engineering Plastics Corp
Murakami Seiki Manufacturing Co Ltd
Fudow Co Ltd
Original Assignee
Sumitomo Riko Co Ltd
Mitsubishi Engineering Plastics Corp
Fudow Co Ltd
Murakami Seiki Kousakusho KK
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 Sumitomo Riko Co Ltd, Mitsubishi Engineering Plastics Corp, Fudow Co Ltd, Murakami Seiki Kousakusho KK filed Critical Sumitomo Riko Co Ltd
Priority to JP08173898A priority Critical patent/JP3668369B2/en
Publication of JPH11277579A publication Critical patent/JPH11277579A/en
Application granted granted Critical
Publication of JP3668369B2 publication Critical patent/JP3668369B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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  • Moulds For Moulding Plastics Or The Like (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)

Abstract

PROBLEM TO BE SOLVED: To avoid a damage to or a breakage of an insert by providing a clamping means using an elastically deformable material brought into pressure contact with an outer periphery of the insert at an insert holding part opened at mating surfaces of upper and lower molds. SOLUTION: A clamping means 14 made of a silicone rubber supported by a flange-like pressing member 13 on overall peripheries is formed in a lined state on inner peripheries of an insert holding part 19 of a base end side and an insert holding part 20 of a front end side. Further, a fixed split flange-like holding part 21 at an outer part of a mold is provided the part 19 of the base end side. A part of a stopper surface of the member 13 is dug and a seat 23 is provided at the part 20 of the front end side. A head part 26 of an inner pin 25 inserted into a pipe-like insert 24 is radially contained at a predetermined play 27 in the seat 23. Thus, a clamping effect of an insert holding part 23 is added to increase a positioning effect against an injection pressure of the melted resin, thereby reinforcing the insert by the pin 25 to prevent its damage or breakage.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【０００１】[0001]

【発明の属する技術分野】本発明は、インサート成形型
及びインサート成形方法に関し、更に詳しくは、パイプ
状あるいは棒状挿入体の外周部に任意形状の樹脂部材を
射出成形するためのインサート成形型及びインサート成
形方法に関する。本発明は、挿入体が、金型金属よりも
弱い樹脂製等の材質のものである場合や、径方向の圧力
によって損傷／破壊され易い構造的要因を持つ場合や、
外周部表面が粗く、外径が不均一で射出成形時にバリを
生じる場合等に、特に好ましく適用される。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an insert molding die and an insert molding method, and more particularly, to an insert molding die and an insert for injection molding a resin member of an arbitrary shape on an outer peripheral portion of a pipe-like or rod-like insert. It relates to a molding method. The present invention relates to the case where the insert is made of a material such as resin which is weaker than the mold metal, or has a structural factor which is easily damaged / destructed by radial pressure,
It is particularly preferably applied when the outer peripheral surface is rough, the outer diameter is not uniform, and burrs occur during injection molding.

【０００２】[0002]

【従来の技術】パイプ体あるいは棒状体の外周部に任意
形状の樹脂部材を接合状態で形成する場合、これらを挿
入体としてインサート成形型に挿入し、その外周部に溶
融樹脂を射出成形すると言うインサート成形法が用いら
れることがある。2. Description of the Related Art When a resin member of an arbitrary shape is formed on the outer periphery of a pipe or rod in a joined state, these are inserted into an insert mold as an insert, and a molten resin is injection-molded on the outer periphery. An insert molding method may be used.

【０００３】例えば、トンネル等の掘削工事において使
用される樹脂製ロックボルトは、通常は引抜き成形（Ｆ
ＲＰ樹脂製）や押出し成形によって単なるリニアなパイ
プ状あるいは棒状に形成されるが、ナット型ジョイント
を用いて長尺化するケースやパイプ型ロックボルトにお
いて薬液注入ホースと螺合接続するケースに備え、ロッ
クボルト本体の端部外周に雄ネジ部をインサート成形す
る場合がある。For example, resin lock bolts used in excavation work for tunnels and the like are usually drawn (F)
RP resin) or extruded to form a simple linear pipe or rod, but use a nut-type joint for a longer case or a pipe-type lock bolt for screw connection with a chemical injection hose. There is a case where a male screw portion is insert-molded on the outer periphery of the end portion of the lock bolt main body.

【０００４】このようなインサート成形においては、溶
融樹脂の大きな射出圧による挿入体の軸方向への位置ズ
レを防止するために、成形型の挿入体保持部において挿
入体を強く挟持しておく必要がある。又、挿入体保持部
と挿入体間の隙間への溶融樹脂浸入によるバリの形成を
防止（いわゆる樹脂の噛切り）するために、挿入体保持
部内周面と挿入体外周面を密接させておく必要がある。In such insert molding, in order to prevent the axial displacement of the insert due to a large injection pressure of the molten resin, it is necessary to strongly hold the insert in the insert holder of the mold. There is. Further, in order to prevent the formation of burrs due to infiltration of the molten resin into the gap between the insert holder and the insert (so-called resin biting), the inner peripheral surface of the insert holder and the outer peripheral surface of the insert are closely contacted. There is a need.

【０００５】このため従来は、例えば図１に示すよう
に、成形型の上型１と下型２（いずれも切断端面で図示
する）との合せ面に開口した挿入体保持部３の閉型時内
径ｄ1を、挿入体４の外径ｄ0 より僅かに（例えば、
０．０５〜０．２ｍｍ程度）小さく設計し、その締代に
よって挿入体４の外周部を強く締付けて、挿入体４の強
力な挟持と溶融樹脂の噛切りを図っていた。For this reason, conventionally, as shown in FIG. 1, for example, a closed mold of an inserted body holding portion 3 opened at a mating surface of an upper mold 1 and a lower mold 2 (both of which are shown by cut end faces). The inner diameter d1 is slightly smaller than the outer diameter d0 of the insert 4 (for example,
(About 0.05 to 0.2 mm), and the outer periphery of the insert 4 is strongly tightened by the tightening allowance, so that the insert 4 is strongly held and the molten resin is cut off.

【０００６】[0006]

【発明が解決しようとする課題】しかし、上記従来技術
の方法は、挿入体が鉄等の頑丈な金属製である場合には
良いが、挿入体が例えば樹脂製である場合には、剛体で
ある金型の強力な締付けに耐えられずに、損傷又は破壊
を受ける恐れがある。However, the above-mentioned prior art method is good when the insert is made of a sturdy metal such as iron, but is rigid when the insert is made of resin, for example. Certain molds may not be able to withstand strong clamping and may be damaged or destroyed.

【０００７】更に、挿入体が径方向の圧力によって損傷
／破壊され易い構造的要因を持つ場合、即ちパイプ体で
ある場合や、ガラス長繊維束に樹脂を含浸させて引抜き
成形されたＦＲＰ製のパイプ体／棒状体（ＦＲＰ製ロッ
クボルトが代表的である）である場合には、かかる不具
合が一層顕著になる。Further, when the insert has a structural factor that is easily damaged / destructed by the radial pressure, that is, when the insert is a pipe, or when a long glass fiber bundle is impregnated with a resin, the FRP is formed by drawing. In the case of a pipe / rod (typically a lock bolt made of FRP), such a problem becomes more remarkable.

【０００８】そこで本発明は、上記従来技術のような不
具合のないインサート成形型及びインサート成形方法を
提供することを、解決すべき課題とする。Accordingly, an object of the present invention is to provide an insert molding die and an insert molding method which are free from the above-mentioned problems of the prior art.

【０００９】[0009]

【課題を解決するための手段】（第１発明の構成）上記
課題を解決するための本願第１発明（請求項１に記載の
発明）の構成は、パイプ状あるいは棒状挿入体の外周部
に任意形状の樹脂部材を射出成形するためのインサート
成形型であって、上下型の合せ面に開口した挿入体保持
部に、前記挿入体の外周面に圧接される弾性変形可能な
材料を用いた締付け手段を備えている、インサート成形
型である。Means for Solving the Problems (Structure of the First Invention) The structure of the first invention of the present application (the invention as set forth in claim 1) for solving the above-mentioned problem is that the outer periphery of a pipe-shaped or rod-shaped insert is provided. An insert molding die for injection-molding a resin member of an arbitrary shape, wherein an elastically deformable material pressed against the outer peripheral surface of the insert is used for an insert holder holding an opening at the mating surface of the upper and lower molds. An insert mold having a fastening means.

【００１０】（第２発明の構成）上記課題を解決するた
めの本願第２発明（請求項２に記載の発明）の構成は、
前記第１発明において、インサート成形型がパイプ状挿
入体補強用の中ピンを含んで構成されている、インサー
ト成形型である。(Structure of the Second Invention) The structure of the second invention (the invention described in claim 2) for solving the above-mentioned problem is as follows.
In the first aspect, the insert molding die is configured to include a middle pin for reinforcing a pipe-shaped insert.

【００１１】（第３発明の構成）上記課題を解決するた
めの本願第３発明（請求項３に記載の発明）の構成は、
インサート成形型における先端側の挿入体保持部には、
前記第２発明の中ピンの頭部に対する受座が径方向への
遊びを以て形成されている、インサート成形型である。(Structure of Third Invention) The structure of the third invention of the present application (the invention according to claim 3) for solving the above problems is as follows.
In the insert holder on the tip side of the insert mold,
The insert molding die according to the second invention, wherein the seat for the head of the middle pin is formed with play in the radial direction.

【００１２】（第４発明の構成）上記課題を解決するた
めの本願第４発明（請求項４に記載の発明）の構成は、
パイプ状あるいは棒状挿入体をインサート成形型に挿入
し、前記第１発明に係る締付け手段によって締付け状態
に保持しながら、前記挿入体の外周部に任意形状の樹脂
部材を射出成形する、インサート成形方法である。射出
成形は、一般に用いられている方法の他、射出圧縮、注
入プレス等の公知の成形法によるものを含む。(Structure of the Fourth Invention) The structure of the fourth invention of the present application (the invention according to claim 4) for solving the above problems is as follows.
An insert molding method, wherein a pipe-shaped or rod-shaped insert is inserted into an insert mold and an arbitrary-shaped resin member is injection-molded on an outer peripheral portion of the insert while being held in a tightened state by the tightening means according to the first invention. It is. Injection molding includes known methods such as injection compression and injection press, in addition to commonly used methods.

【００１３】（第５発明の構成）上記課題を解決するた
めの本願第５発明（請求項５に記載の発明）の構成は、
パイプ状挿入体に前記第２発明又は第３発明に係る中ピ
ンを内挿してインサート成形型に挿入し、前記第１発明
に係る締付け手段によって挿入体を締付け状態に保持し
ながら、挿入体の外周部に任意形状の樹脂部材を射出成
形する、インサート成形方法である。射出成形は、一般
に用いられている方法の他、射出圧縮、注入プレス等の
公知の成形法によるものを含む。(Structure of the Fifth Invention) The structure of the fifth invention (the invention described in claim 5) for solving the above problems is as follows.
While inserting the middle pin according to the second or third aspect of the present invention into the pipe-shaped insert and inserting it into the insert mold, holding the insert in a tightened state by the tightening means according to the first aspect of the present invention, This is an insert molding method in which an arbitrary-shaped resin member is injection-molded on an outer peripheral portion. Injection molding includes known methods such as injection compression and injection press, in addition to commonly used methods.

【００１４】[0014]

【発明の作用・効果】（第１発明及び第４発明の作用・
効果）第１発明及び第４発明によれば、挿入体保持部に
おいて、弾性変形可能な材料を用いた締付け手段が挿入
体の外周面に圧接される。このため、その圧接力と弾性
変形材料に特有の摩擦抵抗とによって、挿入体は軸方向
への位置ズレに対して強力に保持され、溶融樹脂の大き
な射出圧によっても位置ズレを起こさない。Operation and effect of the present invention (operation and effect of the first and fourth inventions)
Effect) According to the first and fourth aspects of the present invention, the fastening means using an elastically deformable material is pressed against the outer peripheral surface of the insert in the insert holder. For this reason, the insert body is strongly held against displacement in the axial direction by the pressing force and the frictional resistance peculiar to the elastically deformable material, and does not cause displacement even by a large injection pressure of the molten resin.

【００１５】又、このような強い保持力が弾性的圧接力
及び摩擦力と言う形で作用するため、剛体による締付け
の場合に比較して挿入体に加わる径方向の圧力は著しく
小さく、従ってその損傷や破壊が起こり難い。Further, since such a strong holding force acts in the form of an elastic pressure contact force and a frictional force, the radial pressure applied to the insert is extremely small as compared with the case of tightening with a rigid body. Less likely to be damaged or destroyed.

【００１６】更に、締付け手段が弾性変形を伴って挿入
体に圧接されるので、挿入体保持部と挿入体間の隙間は
高度の液密状態に封止され、樹脂の噛切りが実質的に完
全に行われる。Further, since the fastening means is pressed against the insert with elastic deformation, the gap between the insert holder and the insert is sealed in a highly liquid-tight state, and the resin is substantially cut off. Completely done.

【００１７】（第２発明、第３発明及び第５発明の作用
・効果）これらの発明においては、パイプ状挿入体に補
強用の中ピンが内挿された状態で前記締付け手段による
締付けが行われるので、径方向の圧力によって損傷／破
壊され易いと言うパイプ状挿入体の構造的要因が解消さ
れ、その損傷や破壊が一層起こり難くなる。換言すれ
ば、この場合には挿入***置決めのための一層強力な締
付けが許容される。(Operation / Effect of the Second, Third and Fifth Inventions) In these inventions, the tightening by the tightening means is performed in a state where the reinforcing middle pin is inserted in the pipe-shaped insert. Therefore, the structural factor of the pipe-shaped insert, which is easily damaged / broken by the radial pressure, is eliminated, and the damage or breakage of the pipe-shaped insert is more unlikely to occur. In other words, a stronger tightening for the positioning of the insert is allowed in this case.

【００１８】又、第３発明による場合には、パイプ体の
インサート成形におけるパイプ孔の偏心の問題が解消さ
れる。Further, according to the third aspect, the problem of eccentricity of the pipe hole in insert molding of the pipe body is solved.

【００１９】即ち、図２にやや誇張して示すように、挿
入体４のパイプ孔５は、特に引抜き成形法等の特定の成
形法による場合には、往々にして偏心状態に形成され
る。このような挿入体４の先端側より図３に示す中ピン
６を内挿してインサート成形を行う場合には、挿入体４
の先端側は中ピン６で位置決めする場合にはパイプ孔５
の中心点Ｏ2 を軸として位置決めされる一方、挿入体４
の基端側は挿入体４外周形状の中心点Ｏ1 を軸として位
置決めされるため、双方の固定位置に幅δのズレを生じ
て、挿入体４のインサート成形型内での固定的保持が困
難になったり、閉型時に挿入体４が折れたりし易くな
る。That is, as shown somewhat exaggeratedly in FIG. 2, the pipe hole 5 of the insert 4 is often formed in an eccentric state, particularly when a particular molding method such as a pultrusion molding method is used. When insert molding is performed by inserting the middle pin 6 shown in FIG.
When positioning with the middle pin 6, the tip side of
Is positioned about the center point O2 of the
Is positioned about the center point O1 of the outer peripheral shape of the insert 4 as an axis, a deviation of the width δ occurs at both fixed positions, and it is difficult to hold the insert 4 in the insert mold in a fixed manner. Or the insert 4 is easily broken when the mold is closed.

【００２０】しかし、図３のように、中ピン６の頭部７
に対する受座８（断面で図示する）が、幅δの変位を許
す径方向への遊びを以て先端側の挿入体保持部３に形成
されている場合には、中ピン６が上記の遊びを利用して
幅δ分だけ径方向へ変位することができるため、上記の
固定位置のズレを解消できるのである。However, as shown in FIG.
Is formed in the insert holder 3 on the distal end side with a play in the radial direction that allows displacement of the width δ, the middle pin 6 uses the play described above. As a result, it is possible to displace in the radial direction by the width δ, so that the displacement of the fixed position can be eliminated.

【００２１】[0021]

【発明の実施の形態】次に、第１発明〜第５発明の実施
の形態について説明する。以下において単に「本発明」
と言うときは、第１発明〜第５発明を一括して指してい
る。Next, embodiments of the first to fifth inventions will be described. In the following, simply "the present invention"
When it says, it refers to 1st invention-5th invention collectively.

【００２２】〔挿入体〕本発明において加工対象となる
挿入体は、基本的にはその材質、外形及び内部構造を限
定されず、例えば金属製のパイプ体あるいは棒状体（金
属製ロックボルト等）の外周部に任意形状の樹脂部材
（例えば、雄ネジ部材）を接合状態で形成することもで
きる。[Insert Body] The insert to be machined in the present invention is basically not limited in its material, outer shape and internal structure. For example, a metal pipe body or rod-shaped body (metal lock bolt, etc.) A resin member of an arbitrary shape (for example, a male screw member) can be formed in a joined state on the outer peripheral portion of.

【００２３】しかし、発明の効果をより有効に発現させ
るためには、前記従来技術のインサート成形方法によっ
て損傷又は破壊を受ける恐れがある材質のもの（例え
ば、樹脂製ロックボルト）、とりわけ、径方向の圧力に
よって損傷／破壊され易い構造的要因を持つもの（例え
ば、パイプ状の樹脂製ロックボルトや、パイプ状あるい
は棒状のＦＲＰ製ロックボルト）を対象とすることが好
ましい。However, in order to make the effects of the present invention more effective, it is necessary to use a material (for example, a resin lock bolt) which is liable to be damaged or broken by the insert molding method of the prior art, particularly, in the radial direction. (For example, a pipe-shaped lock bolt made of resin or a pipe-shaped or rod-shaped FRP lock bolt) having a structural factor that is easily damaged / destructed by the pressure.

【００２４】挿入体は必ずしもロックボルトのようにリ
ニアで細長い外形を備えたパイプ体あるいは棒状体であ
る必要はなく、比較的短尺形状や、屈曲部等を備えるパ
イプ体あるいは棒状体でも良いし、ロックボルトも含め
て外周表面に任意形態の凹凸が形成されていても構わな
い。The insert need not necessarily be a pipe or rod having a linear and elongated outer shape like a lock bolt, but may be a pipe or rod having a relatively short shape, a bent portion, or the like. Any form of irregularities may be formed on the outer peripheral surface including the lock bolt.

【００２５】〔インサート成形型〕インサート成形型
は、開閉可能な上型と下型の合せ面に、締付け手段を備
えた挿入体保持部を開口させたものであり、パイプ状挿
入体を補強するための内挿用中ピンを含んで構成される
場合と、そうでない場合とがある。上型及び／又は下型
には、適宜に溶融樹脂の射出孔が設けられる。[Insert Mold] The insert mold is one in which an insert holding portion provided with a fastening means is opened at the mating surface of the upper and lower molds that can be opened and closed to reinforce the pipe-shaped insert. There is a case where it is configured to include a pin during interpolation for use, and a case where it is not so. In the upper mold and / or the lower mold, injection holes for molten resin are appropriately provided.

【００２６】〔挿入体保持部〕挿入体保持部は、成形型
のキャビティにおける挿入体先端側と挿入体基端側に設
けて挿入体を２ケ所で保持する構成が好ましいが、基端
側だけに挿入体保持部が設けられた片持ち形式でも実施
可能である。先端側にも挿入体保持部を設ける場合、そ
の開口形態は成形型の外部まで開口していても良い（こ
の場合、挿入体の先端部を成形型外部まで突出させて位
置決めすることにより、挿入体の中間部外周に任意形状
の樹脂部材を成形することもできる。）し、先端部が上
下成形型の壁部によって閉止される盲孔状に開口してい
ても良い。[Insert Body Holder] The insert holder is preferably provided at the insert distal end side and the insert proximal end side in the cavity of the mold to hold the insert at two locations, but only at the proximal end side. It can also be implemented in a cantilever type in which an insert holder is provided. In the case where the insert holding portion is also provided on the distal end side, the opening may be open to the outside of the molding die (in this case, by inserting the distal end of the insert to the outside of the molding die and positioning it, A resin member of an arbitrary shape may be molded on the outer periphery of the middle part of the body.) Alternatively, the distal end may be opened in a blind hole shape closed by the walls of the upper and lower molding dies.

【００２７】〔締付け手段〕締付け手段は上記挿入体保
持部に備えさせるものであって、弾性変形可能な材料を
用い、かつ挿入体の外周面に圧接可能な形状及び形態で
形成される。このような要求を満たす限りにおいて締付
け手段の構成は限定されないが、その代表的な一例が、
ゴム／エラストマー材料を挿入体の外径より僅かに（例
えば、０．１〜２ｍｍ程度）小さな内径となるように、
挿入体保持部内周の全周囲にわたって、かつ挿入体保持
部内周の一部幅又は全幅にわたって、設けることである
（実際には上型側と下型側に分割形成される）。[Tightening Means] Tightening means is provided on the insert holder and is made of a material which can be elastically deformed and is formed in a shape and form capable of being pressed against the outer peripheral surface of the insert. The configuration of the fastening means is not limited as long as such a requirement is satisfied.
The rubber / elastomer material has an inner diameter slightly smaller (for example, about 0.1 to 2 mm) than the outer diameter of the insert,
That is, it is provided over the entire circumference of the inner periphery of the insertion body holding part and over a part or the entire width of the inner circumference of the insertion body holding part (actually, it is divided and formed on the upper mold side and the lower mold side).

【００２８】本発明において、挿入体の樹脂射出圧に抗
する位置決めと溶融樹脂の噛切りは上記構成の締付け手
段によって行われるが、溶融樹脂の射出圧や挿入体の形
状等に関して極めて厳しい条件でインサート成形がおこ
なわれる場合に備え、念のために、締付け効果のない溶
融樹脂封止用のパッキンを適部に施したり、締付け手段
付きの挿入体保持部を成形型外部にまで延長して設けて
も良い。In the present invention, the positioning of the insert against the resin injection pressure and the cutting of the molten resin are performed by the above-described tightening means, but the injection pressure of the molten resin, the shape of the insert, and the like are subject to extremely severe conditions. In case insert molding is performed, packing should be applied to the appropriate part for sealing the molten resin without tightening effect, or an insert holding part with tightening means extended to the outside of the mold, just in case May be.

【００２９】〔中ピン〕インサート成形型がパイプ状挿
入体を補強するための内挿用中ピンを含んで構成される
場合、成形後のピン抜きを考慮して、ピン本体より大径
の頭部を備えた中ピンを挿入体先端側より内挿する方式
が好ましく、そのための頭部用受座が上記挿入体先端側
の挿入体保持部に設けられることがある。この受座は、
前記「作用・効果」の項で説明した理由から、中ピンの
頭部に対する径方向への一定の遊びを以て形成されるこ
とが、より好ましい。[Medium Pin] When the insert mold includes an intermediate pin for reinforcing the pipe-shaped insert, a head having a diameter larger than that of the pin body is taken into consideration in order to remove the pin after molding. It is preferable to insert a middle pin provided with a part from the distal end side of the insert, and a seat for the head for this purpose may be provided in the insert holder on the distal end side of the insert. This seat is
For the reason described in the section of “action / effect”, it is more preferable that the middle pin is formed with a certain play in the radial direction with respect to the head portion.

【００３０】[0030]

【実施例】次に、本発明の実施例を図面に基づいて説明
する。Next, an embodiment of the present invention will be described with reference to the drawings.

【００３１】（実施例１）図４は内挿用中ピンを含まず
に構成されるタイプのインサート成形型と、これによる
インサート成形方法を示し、上型９と下型１０からなる
インサート成形型の合せ面に、基端側の挿入体保持部１
１と先端側の挿入体保持部１２とが開口形成されてい
る。(Embodiment 1) FIG. 4 shows an insert molding die of a type which does not include a pin for insertion and an insert molding method using the insert molding die. An insert molding die comprising an upper die 9 and a lower die 10 is shown. The insertion body holding part 1 on the base end side
An opening 1 is formed in the insertion body holder 1 and the insertion body holder 12 on the distal end side.

【００３２】双方の挿入体保持部１１，１２の内周面に
はそれぞれ、全周囲にわたって、シリコンラバー製の締
付け手段１４が接着剤等を用いて内張り状に設けられて
いる。締付け手段１４は分割フランジ状の押え部材１３
により軸方向にサポートされている。そして先端側の挿
入体保持部１２においては、上記押え部材１３の端面の
一部が挿入体１５（樹脂製ロックボルトである）に対す
るストッパ面となっており、かつ、図５に拡大して示す
ように、このストッパ面と締付け手段１４の間には溶融
樹脂の封止を一層完全にするためのシートパッキン１６
が介装されている。A fastening means 14 made of silicone rubber is provided on the inner peripheral surfaces of both insert holders 11 and 12 over the entire periphery in a lining shape using an adhesive or the like. The fastening means 14 is a split flange-shaped holding member 13.
Is supported in the axial direction. In the insertion body holding portion 12 on the distal end side, a part of the end surface of the pressing member 13 serves as a stopper surface for the insertion body 15 (which is a resin lock bolt), and is shown in an enlarged scale in FIG. As described above, between the stopper surface and the fastening means 14, there is provided a sheet packing 16 for more completely sealing the molten resin.
Is interposed.

【００３３】本実施例では、以上の構成により、挿入体
１５がその先端を上記ストッパ面に突当てた位置で、挿
入体保持部１１，１２の締付け手段１４を弾性的に圧接
された状態で保持される。そして射出孔１７から雄ネジ
部材成形用のキャビティ１８に溶融樹脂が射出されるの
である。その間、締付け手段１４によって挿入体１５の
軸方向への位置ズレが防止されると共に、締付け手段１
４によって（及び補完的にシートパッキン１６によっ
て）溶融樹脂の封止がなされ、バリの発生が防止され
る。In this embodiment, with the above structure, the fastening means 14 of the insert holders 11, 12 is elastically pressed against the stopper 15 at the position where the tip of the insert 15 abuts against the stopper surface. Will be retained. Then, the molten resin is injected from the injection hole 17 into the cavity 18 for forming the male screw member. In the meantime, the displacement of the insert 15 in the axial direction is prevented by the fastening means 14 and the fastening means 1
The sealing of the molten resin is performed by 4 (and complementarily by the sheet packing 16), and the generation of burrs is prevented.

【００３４】（実施例２）図６は内挿用中ピンを含んで
構成されるタイプのインサート成形型と、これによるイ
ンサート成形方法を示し、基端側の挿入体保持部１９と
先端側の挿入体保持部２０との内周面にはそれぞれ、全
周囲にわたって、フランジ状の押え部材１３によりサポ
ートされたシリコンラバー製の締付け手段１４が内張り
状に形成されている。(Embodiment 2) FIG. 6 shows an insert molding die of a type including a pin for insertion and an insert molding method using the insert molding die. A fastening means 14 made of silicone rubber supported by a flange-shaped pressing member 13 is formed in a lining shape on the inner peripheral surface of the insert holding portion 20 over the entire circumference.

【００３５】そして基端側の挿入体保持部１９において
は、更に成形型外部に固定した分割フランジ状の保持部
材２１を設けると共に、その内周面の全周囲にわたって
前記同様の締付け手段１４を内張り状に形成することに
より、挿入体保持部１９と同軸同内径の挿入体保持部２
２を形成している。In the insertion body holding portion 19 on the base end side, a split flange-shaped holding member 21 fixed to the outside of the molding die is further provided, and the same tightening means 14 is lined around the entire inner peripheral surface thereof. The insertion member holding portion 2 having the same inner diameter as the insertion member holding portion 19
2 are formed.

【００３６】一方、先端側の挿入体保持部２０において
は、押え部材１３のストッパ面の一部を掘込んで受座２
３が設けられ、パイプ状の挿入体２４（引抜き成形され
たＦＲＰ製ロックボルトである）に内挿された中ピン２
５の頭部２６がこの受座２３に径方向への一定の遊び２
７を以て収容されている。なお、中ピン２５は、キャビ
ティ１８よりも深く内挿されることでパイプ状挿入体２
４の溶融樹脂射出圧に対する抵抗性を付与し、少なくと
も基端側の挿入体保持部１９，２２による保持部分より
も深く内挿されることで締付けに対するパイプ状挿入体
２４の抵抗性を付与するので、後者の深さにまで内挿さ
れることが好ましい。On the other hand, in the insertion body holding portion 20 on the distal end side, a part of the stopper surface of the holding member 13 is dug into the receiving seat 2.
3 and a middle pin 2 inserted in a pipe-shaped insert 24 (which is a pull-formed FRP lock bolt).
5 has a constant radial play 2 on the seat 23.
7 The middle pin 25 is inserted deeper than the cavity 18 so that the pipe-shaped insert 2 is inserted.
4 is given resistance to the injection pressure of the molten resin, and is inserted deeper than at least the holding parts of the insertion body holding parts 19 and 22 on the base end side, so that the pipe-shaped insertion body 24 is given resistance to tightening. It is preferable to interpolate to the latter depth.

【００３７】本実施例では、以上の構成により、挿入体
保持部２２による締付け効果が付加されて溶融樹脂の射
出圧に抗する位置決め効果が一層大きくなると共に、か
かる締付けの強化に対応して中ピン２５による挿入体１
５の補強がなされるために、挿入体１５の損傷や破壊は
一層有効に防止される。In the present embodiment, with the above structure, the tightening effect of the insert holder 22 is added, the positioning effect against the injection pressure of the molten resin is further increased, and the tightening effect is increased in response to such tightening. Insert 1 with pin 25
Since the reinforcing member 5 is provided, damage or destruction of the insert 15 is more effectively prevented.

【００３８】本実施例において、上記以外の点は実施例
１と同様である。The present embodiment is the same as Embodiment 1 except for the above points.

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

【図１】従来技術に係るインサート成形型とその使用方
法を示す図である。FIG. 1 is a diagram showing an insert mold according to a conventional technique and a method of using the same.

【図２】パイプ状挿入体の断面図である。FIG. 2 is a sectional view of a pipe-shaped insert.

【図３】中ピンと受座の関係を示す図である。FIG. 3 is a diagram showing a relationship between a center pin and a seat.

【図４】実施例に係るインサート成形型とその使用方法
を示す図であり、挿入体以外は断面又は切断端面で図示
する。FIG. 4 is a view showing an insert mold according to the embodiment and a method of using the same, and a section other than the insert is shown in a cross section or a cut end face.

【図５】図４の要部拡大図である。FIG. 5 is an enlarged view of a main part of FIG. 4;

【図６】実施例に係るインサート成形型とその使用方法
を断面又は切断端面で示す図である。FIG. 6 is a view showing a cross section or a cut end surface of an insert mold according to an example and a method of using the insert mold.

【符号の説明】[Explanation of symbols]

９ 上型 １０ 下型 １１，１２，１９，２０，２２ 挿入体保持部 １４ 締付け手段 ２３ 受座 ２５ 中ピン 9 Upper Die 10 Lower Die 11, 12, 19, 20, 22 Insert Holder 14 Tightening Means 23 Receipt 25 Medium Pin

フロントページの続き (51)Int.Cl.6 識別記号 ＦＩ // Ｂ２９Ｌ 1:00 (71)出願人 598040916 有限会社村上精機 名古屋市南区南野２丁目93番地 (72)発明者 三間 正 愛知県小牧市大字北外山字哥津3600番地 東海ゴム工業株式会社内 (72)発明者 伊藤 尊之 神奈川県平塚市東八幡５丁目６番２号 三 菱エンジニアリングプラスチックス株式会 社技術センター内 (72)発明者 権田 治男 東京都大田区西六郷４丁目11番26号 フド ー株式会社内 (72)発明者 大谷 博己 名古屋市南区南野２丁目93番地 有限会社 村上精機内Continued on the front page (51) Int.Cl. 6 Identification symbol FI // B29L 1:00 (71) Applicant 598040916 Murakami Seiki Co., Ltd. 2-93 Minamino, Minami-ku, Nagoya-shi (72) Inventor Tadashi Mima Komaki, Aichi 3600 No. Gezu, Kita-gai-shi, Tokai Rubber Industry Co., Ltd. (72) Inventor Takayuki Ito 5-6-2 Higashi-Hachiman, Hiratsuka-shi, Kanagawa Prefecture Mitsubishi Engineering Plastics Co., Ltd. Technology Center (72) Inventor Gonda Haruo Haruo Otani 2-93, Minami-ku, Minami-ku, Nagoya-shi Murakami Seiki Co., Ltd. (72) Inventor Hiromi Otani 4--11-2 Nishirokugo, Ota-ku, Tokyo

Claims (5)

【特許請求の範囲】[Claims] 【請求項１】 パイプ状あるいは棒状挿入体の外周部に
任意形状の樹脂部材を射出成形するためのインサート成
形型であって、上下型の合せ面に開口した挿入体保持部
に、前記挿入体の外周面に圧接される弾性変形可能な材
料を用いた締付け手段を備えていることを特徴とするイ
ンサート成形型。1. An insert molding die for injection-molding a resin member of an arbitrary shape on an outer peripheral portion of a pipe-shaped or rod-shaped insert. An insert molding die, comprising: fastening means made of an elastically deformable material pressed against the outer peripheral surface of the insert molding die. 【請求項２】 前記インサート成形型がパイプ状挿入体
補強用の中ピンを含んで構成されていることを特徴とす
る請求項１に記載のインサート成形型。2. The insert mold according to claim 1, wherein the insert mold includes a middle pin for reinforcing a pipe-shaped insert. 【請求項３】 前記インサート成形型における先端側の
挿入体保持部には、前記中ピンの頭部に対する受座が径
方向への遊びを以て形成されていることを特徴とする請
求項２に記載のインサート成形型。3. A seat for the head of the middle pin is formed with a play in the radial direction in the insert holding portion on the distal end side of the insert molding die. Insert mold. 【請求項４】 パイプ状あるいは棒状挿入体をインサー
ト成形型に挿入し、請求項１に記載の締付け手段によっ
て締付け状態に保持しながら、前記挿入体の外周部に任
意形状の樹脂部材を射出成形することを特徴とするイン
サート成形方法。4. A pipe-shaped or rod-shaped insert is inserted into an insert mold, and a resin member of an arbitrary shape is injection-molded on an outer peripheral portion of the insert while being held in a tightened state by the tightening means according to claim 1. Insert molding method characterized by performing. 【請求項５】 パイプ状挿入体に請求項２又は請求項３
に記載の中ピンを内挿してインサート成形型に挿入し、
請求項１に記載の締付け手段によって前記挿入体を締付
け状態に保持しながら、前記挿入体の外周部に任意形状
の樹脂部材を射出成形することを特徴とするインサート
成形方法。5. The pipe-shaped insert according to claim 2 or claim 3.
Insert the middle pin described in and insert it into the insert mold.
An insert molding method, wherein an arbitrary-shaped resin member is injection-molded on an outer peripheral portion of the insert while the insert is held in a tightened state by the tightening means according to claim 1.
JP08173898A 1998-03-27 1998-03-27 Insert molding die and insert molding method Expired - Fee Related JP3668369B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP08173898A JP3668369B2 (en) 1998-03-27 1998-03-27 Insert molding die and insert molding method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP08173898A JP3668369B2 (en) 1998-03-27 1998-03-27 Insert molding die and insert molding method

Publications (2)

Publication Number Publication Date
JPH11277579A true JPH11277579A (en) 1999-10-12
JP3668369B2 JP3668369B2 (en) 2005-07-06

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ID=13754786

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Country Link
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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1500488A1 (en) * 2003-07-23 2005-01-26 Calsonic Kansei Corporation Insert injection molding method and jig
JP2007216580A (en) * 2006-02-17 2007-08-30 Seiko Epson Corp Elastic tube equipped with connector and its manufacturing method
EP2576178A2 (en) * 2010-05-25 2013-04-10 Saint-Gobain Performance Plastics Corporation System, method and apparatus for polymer seals to form positive shut-off for insert molding of liquid silicone rubber
JP2017109397A (en) * 2015-12-17 2017-06-22 株式会社豊和 Manufacturing method of synthetic resin rod having core grid
WO2020173517A1 (en) * 2019-02-26 2020-09-03 Leoni Kabel Gmbh Injection molding an element onto a cable
JP2022045932A (en) * 2020-09-10 2022-03-23 プライムプラネットエナジー＆ソリューションズ株式会社 Manufacturing method of secondary battery

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1500488A1 (en) * 2003-07-23 2005-01-26 Calsonic Kansei Corporation Insert injection molding method and jig
JP2007216580A (en) * 2006-02-17 2007-08-30 Seiko Epson Corp Elastic tube equipped with connector and its manufacturing method
EP2576178A2 (en) * 2010-05-25 2013-04-10 Saint-Gobain Performance Plastics Corporation System, method and apparatus for polymer seals to form positive shut-off for insert molding of liquid silicone rubber
JP2013526440A (en) * 2010-05-25 2013-06-24 サン−ゴバン パフォーマンス プラスティックス コーポレイション System, method and apparatus for polymer seal forming a positive shut-off for liquid silicone rubber insert molding
EP2576178A4 (en) * 2010-05-25 2015-04-15 Saint Gobain Performance Plast System, method and apparatus for polymer seals to form positive shut-off for insert molding of liquid silicone rubber
US9085102B2 (en) 2010-05-25 2015-07-21 Saint-Gobain Performance Plastics Corporation System, method and apparatus for polymer seals to form positive shut-off for insert molding of liquid silicone rubber
JP2017109397A (en) * 2015-12-17 2017-06-22 株式会社豊和 Manufacturing method of synthetic resin rod having core grid
WO2020173517A1 (en) * 2019-02-26 2020-09-03 Leoni Kabel Gmbh Injection molding an element onto a cable
CN113453864A (en) * 2019-02-26 2021-09-28 莱尼电缆有限公司 Injection moulding of components onto cables
CN113453864B (en) * 2019-02-26 2023-05-23 莱尼电缆有限公司 Injection molding of components onto cables
JP2022045932A (en) * 2020-09-10 2022-03-23 プライムプラネットエナジー＆ソリューションズ株式会社 Manufacturing method of secondary battery

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