JPS60168619A - Injection molding device - Google Patents
Injection molding deviceInfo
- Publication number
- JPS60168619A JPS60168619A JP2560884A JP2560884A JPS60168619A JP S60168619 A JPS60168619 A JP S60168619A JP 2560884 A JP2560884 A JP 2560884A JP 2560884 A JP2560884 A JP 2560884A JP S60168619 A JPS60168619 A JP S60168619A
- Authority
- JP
- Japan
- Prior art keywords
- hot runner
- mold
- injection
- gate
- injection molding
- 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
Links
- 238000001746 injection moulding Methods 0.000 title claims description 24
- 229920005989 resin Polymers 0.000 claims abstract description 34
- 239000011347 resin Substances 0.000 claims abstract description 34
- 238000002347 injection Methods 0.000 claims abstract description 33
- 239000007924 injection Substances 0.000 claims abstract description 33
- 238000009792 diffusion process Methods 0.000 abstract description 5
- 238000010586 diagram Methods 0.000 description 5
- 238000000465 moulding Methods 0.000 description 4
- 230000004308 accommodation Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 210000003608 fece Anatomy 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
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
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/27—Sprue channels ; Runner channels or runner nozzles
- B29C45/2701—Details not specific to hot or cold runner channels
-
- 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
- B29C45/26—Moulds
- B29C45/27—Sprue channels ; Runner channels or runner nozzles
-
- 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
- B29C45/26—Moulds
- B29C45/27—Sprue channels ; Runner channels or runner nozzles
- B29C2045/2796—Axially movable nozzles or nozzle tips
Abstract
Description
【発明の詳細な説明】
〈発明の技術分管〉
本発明は射出成形装置、特にホットランナを通る溶融樹
脂を均一状態に保つことのできる射出成形装置に関する
ものである。DETAILED DESCRIPTION OF THE INVENTION <Technical Division of the Invention> The present invention relates to an injection molding apparatus, and particularly to an injection molding apparatus that can maintain a uniform state of molten resin passing through a hot runner.
〈従来技術と問題点〉
熱可塑性樹脂を成形加工する射出成形装置には各種構造
のものが使用されているが、この射出成形装置の一典型
例が第１図に示しである。この射出装置は、固定側６と
これに相対向して配置され、間に樹脂成形用のキャビテ
ィを形成する可動側７とから構成され且つ固定側６部分
には収容室１３を有する金型と、軸方向先端にゲート部
４、後端部にノズル受部１１を形成し且つ内部にノズル
受部１１からゲート部４へと延びる樹脂通路１２を有す
ると共に、上記収容室１３内に設置されるホ・ソトラン
ナＨと、ホットランナＨのノズル受部１１に嵌合するノ
ズル部８ａを有しボットランナＨに当接して溶融樹脂を
射出する射出ユニット８とから成る。ホットランナＨは
、内部に樹脂通路１２が形成されたほぼ円筒形状の本体
２と、樹脂通路】２のほぼ中心部において軸方向に延び
るトーピード１とを有し、本体２からゲート部４にかけ
ては次第に先細りとなった略弾丸状の外形形状を有する
。また、このホットランナＨは、収容室内において、ゲ
ート部４が固定側６の樹脂出口部分に形成されたゲート
受部５に密着嵌合した状態で固定側にしっかりと固定さ
れる。更に、トーピード１の中には、例えばニタロム線
のような、電熱発熱体１０が埋設されている。そして樹
脂成形作業時にあっては、射出ユニット８が軸方向へ前
進してノズル部８ａがノズル受部１１に嵌合することに
より、溶融樹脂がホットランナ１１の中へ送り込まれる
。この溶融樹脂は、トーピード１により保温或いは加熱
されて溶融状態で金型のキャビティ９内に射出される。<Prior Art and Problems> Various types of injection molding apparatuses are used for molding thermoplastic resin, and a typical example of this injection molding apparatus is shown in FIG. This injection device is composed of a fixed side 6 and a movable side 7 which is arranged opposite to the fixed side and forms a cavity for resin molding therebetween, and a mold having a storage chamber 13 on the fixed side 6. , has a gate part 4 at the axial tip, a nozzle receiving part 11 at the rear end, has a resin passage 12 inside extending from the nozzle receiving part 11 to the gate part 4, and is installed in the storage chamber 13. It consists of a hot runner H and an injection unit 8 which has a nozzle part 8a that fits into the nozzle receiving part 11 of the hot runner H and injects molten resin by coming into contact with the hot runner H. The hot runner H has a substantially cylindrical main body 2 with a resin passage 12 formed therein, and a torpedo 1 extending in the axial direction approximately at the center of the resin passage 2. It has an approximately bullet-like external shape that gradually tapers. Further, the hot runner H is firmly fixed to the stationary side in the accommodation chamber with the gate portion 4 tightly fitted to the gate receiving portion 5 formed at the resin outlet portion of the stationary side 6. Furthermore, an electric heating element 10, such as a Nitarom wire, is embedded in the torpedo 1. During the resin molding operation, the injection unit 8 moves forward in the axial direction and the nozzle portion 8a fits into the nozzle receiving portion 11, whereby molten resin is fed into the hot runner 11. This molten resin is kept warm or heated by the torpedo 1 and is injected into the cavity 9 of the mold in a molten state.
しかしながら、このような従来の射出成形装置にあって
は、ホットランナＨ内を通過する樹脂のうち、トーピー
ド１に接し又はこれに近接した部分を通る樹脂は本体２
の内壁面に隣接した部分を通る樹脂よりも温度が高く、
従って粘度も低いため、射出の際にトーピード１に近い
部分の樹脂が優先的にキャビティ９内に射出される一方
、内壁面３に近い部分の樹脂は滞溜し長時間加熱される
ことになる。そのため、塩化ビニール樹脂や、あるいは
難燃剤を添加した樹脂の如く、熱安定性の悪い樹脂を成
形すると、樹脂が変色し、或いは分解する等の問題があ
る。また、内壁面３付近の滞溜をなくずために、本体２
の外周にヒータを取付けて加熱してもゲート部４が常に
金型に接触しているため、金型に熱が奪われて本体２の
外周を加熱した効果が薄く逆に金型のゲート受部５の温
度が上昇して、溶融便脂射出後の冷却に長時間を要し、
作業能率が低下する等の不具合があった。However, in such a conventional injection molding apparatus, among the resin passing through the hot runner H, the resin passing through a portion in contact with or close to the torpedo 1 is transferred to the main body 2.
The temperature is higher than that of the resin passing through the area adjacent to the inner wall surface of the
Therefore, since the viscosity is low, during injection, the resin near the torpedo 1 is preferentially injected into the cavity 9, while the resin near the inner wall surface 3 stagnates and is heated for a long time. . Therefore, when molding a resin with poor thermal stability, such as a vinyl chloride resin or a resin to which a flame retardant is added, there are problems such as the resin changing color or decomposing. In addition, in order to eliminate accumulation near the inner wall surface 3, the main body 2
Even if a heater is attached to the outer periphery of the main body 2 to heat it, the gate part 4 is always in contact with the mold, so the heat is absorbed by the mold, and the effect of heating the outer periphery of the main body 2 is weak, and conversely, the gate part 4 of the mold is heated. The temperature of part 5 rises, and it takes a long time to cool down after injection of molten feces fat.
There were problems such as a decrease in work efficiency.
〈発明の目的〉
本発明は、乙のような従来の問題点に着目してなされた
もので、その目的は、ホットランナの内部を溶融樹脂が
通り易いように構成すると共に、当該ホットランナを通
る溶融樹脂を均一状態に保つことのできる射出成形装置
を提供することにより、上記従来の問題点を解決するこ
とである。<Object of the Invention> The present invention has been made by focusing on the conventional problems as described in B above.The purpose of the present invention is to configure the hot runner so that the molten resin can easily pass through the inside of the hot runner, and to The object of the present invention is to solve the above-mentioned conventional problems by providing an injection molding apparatus that can maintain a uniform state of molten resin passing therethrough.
〈発明の構成〉
本発明は、上記目的を達成するために、射出成形用の金
型に設けられた収容室内で、ホットランナを軸方向へ摺
動可能に配設する一方、金型の樹脂出口部分にはゲート
受部を形成し、ホットランナを弾性部材により金型に対
して射出位置から後退する方向へ常時弾性支持し、射出
ユニットの前進によるノズル部の衝合圧力によってホッ
トランナが弾性部材に抗して前進し、当該ポットランナ
のゲート部が金型のゲート受部に嵌合するようにしたこ
とを要旨とするものである。ホットランナの弾性支持は
、例えば当該ホットランナの基端、即ち後端部分に軸に
対して直角方向に延びるフランジを設け、このフランジ
面にホットランナの後退方向へ作用するバネ部材を係合
させて行′う。即ち、ホットランナのフランジに通孔を
形成すると共に、との通孔に遊嵌状態でボルトを通し、
とのボルトを金型にねじ込み固定すれば、ホットランナ
はボルトにガイドされて軸方向に摺動する乙とが出来る
。更にボルトの頭部とフランジ面との間に弾性部材とし
て圧縮コイルバネを装着すれば、ホットランナは射出操
作時の金型ゲート受部に密嵌した位置から後退する方向
へ常時付勢されることになり、射出時以外はホットラン
ナと金型とを熱的に切離して不必要な熱の拡散を防止す
ることができる。<Structure of the Invention> In order to achieve the above object, the present invention disposes a hot runner so as to be slidable in the axial direction within a housing chamber provided in an injection mold, A gate receiving part is formed at the exit part, and the hot runner is always elastically supported by an elastic member in the direction of retreating from the injection position with respect to the mold, and the hot runner is elastically supported by the collision pressure of the nozzle part due to the advancement of the injection unit. The gist of the pot runner is to move forward against the member so that the gate part of the pot runner fits into the gate receiving part of the mold. The hot runner can be elastically supported by, for example, providing a flange extending perpendicularly to the axis at the base end, that is, the rear end portion of the hot runner, and engaging a spring member acting in the backward direction of the hot runner on the flange surface. Let's go. That is, a through hole is formed in the flange of the hot runner, and a bolt is inserted loosely into the through hole.
By screwing and fixing the bolts into the mold, the hot runner can be guided by the bolts and slide in the axial direction. Furthermore, if a compression coil spring is installed as an elastic member between the head of the bolt and the flange surface, the hot runner will always be biased in the direction of retreat from the position where it is tightly fitted into the mold gate receiver during injection operation. This makes it possible to thermally separate the hot runner and the mold except during injection to prevent unnecessary heat diffusion.
〈実施例の説明〉
本発明の一実施例を添付の図面を参照して詳細に説明す
る。<Description of Embodiments> An embodiment of the present invention will be described in detail with reference to the accompanying drawings.
第２図及び第３図は本発明の一実施例を示す図である。FIGS. 2 and 3 are diagrams showing an embodiment of the present invention.
乙の実施例に係る射出成形装置は、固定側６及び当該固
定側６に対向して配設された可動側から構成され且つ収
容室１３を形成した金型と、上記収容室１３内に軸方向
に摺動可能に設置されるホットランナ２１と、ホットラ
ンナ２１に当接して熱溶融樹脂を射出する射出ユニット
８とを備え、上記ホットランナ２１を射出位置から後退
する方向へ弾性支持して成る。ホットランナ２１は、軸
方向先端にゲート部４、後端には射出ユニット８のノズ
ル部８ａに嵌合する。ノズル受部１１を形成し、内部に
は、ノズル受部１１からゲート部までホットランナ１３
を軸方向に貫通して延びる樹脂通路１２を有している。The injection molding apparatus according to the embodiment B is composed of a fixed side 6 and a movable side disposed opposite to the fixed side 6, and includes a mold having a housing chamber 13, and a shaft inside the housing chamber 13. The hot runner 21 is installed so as to be slidable in the direction, and the injection unit 8 contacts the hot runner 21 to inject hot molten resin, and elastically supports the hot runner 21 in the direction of retreating from the injection position. Become. The hot runner 21 fits into the gate portion 4 at its axial tip and into the nozzle portion 8a of the injection unit 8 at its rear end. A hot runner 13 is formed inside the nozzle receiving part 11 from the nozzle receiving part 11 to the gate part.
It has a resin passageway 12 that extends through it in the axial direction.
このホットランナ２１には後端部分、即ちノズル受部１
１に近接した位置に直角方向外方に延びるフランジ２５
が形成され、このフランジ２５は熱伝導率の低い材料（
例えばステンレス鋼）で構成され所定の数の通孔２６が
形成されている。乙の通孔２６には、ボルト２４が遊嵌
状態で押通されると共に、乙のボルト２４は、固定側６
に固定されるロケートリング２３にねじ込み固定され、
ホットランナ２１をボルト２４に治って軸方向に摺動可
能に支持する。更に、ボルト２４頭部とホットランナ２
１のフランジ２５との間には、弾性部材、即ちコイル状
に巻いたバネ部材２７が装着され、ホットランナ２１を
金型のゲート受部５に嵌合した射出位置から後退する方
向へ常時付勢してロケートリング２３に押し付ける。こ
れによりホットランナ２１のゲート部４は金型のゲート
受部５から離間するから、ホットランナ２１と金型とは
熱的に絶縁される。This hot runner 21 has a rear end portion, that is, a nozzle receiving portion 1.
a flange 25 extending perpendicularly outward in a position proximate to 1;
is formed, and this flange 25 is made of a material with low thermal conductivity (
For example, it is made of stainless steel) and has a predetermined number of through holes 26 formed therein. The bolt 24 is pushed through the through hole 26 in a loosely fitted state, and the bolt 24 is inserted into the fixed side 6.
is screwed and fixed to the locate ring 23 fixed to the
A hot runner 21 is supported by a bolt 24 so as to be slidable in the axial direction. Furthermore, bolt 24 head and hot runner 2
An elastic member, that is, a coiled spring member 27 is attached between the flange 25 of the hot runner 21 and the flange 25 of the mold. force and press it against the locate ring 23. As a result, the gate portion 4 of the hot runner 21 is separated from the gate receiving portion 5 of the mold, so that the hot runner 21 and the mold are thermally insulated.
一方、ホットランナ２１の外周にはバンドヒータ２２が
巻装され又、温度調節器２８がホットランナ２１に埋設
されており、これによってホットランナ２１を所定温度
に自動調節しながら加熱するようになっているから、通
常時において、ホットランナ２１から金型へ熱が伝わる
ということはなく、ホットランナ２１を良好な状態に保
つことができる。On the other hand, a band heater 22 is wrapped around the outer circumference of the hot runner 21, and a temperature regulator 28 is embedded in the hot runner 21, so that the hot runner 21 is heated while being automatically adjusted to a predetermined temperature. Therefore, in normal times, heat is not transferred from the hot runner 21 to the mold, and the hot runner 21 can be maintained in a good condition.
なお、ロケートリング２３の中心部には、金型内に設置
されたホットランナ２１に射出ユニット８が当接し得る
様開口２９が形成されている。Note that an opening 29 is formed in the center of the locate ring 23 so that the injection unit 8 can come into contact with the hot runner 21 installed in the mold.
かかる構成を有する射出成形装置において、射出成形を
行うには、先ず射出ユニット８が矢印Ａの方向へ前進す
ると、ノズル部８ａの押圧力によってホットランナ２１
もｔこまバネ部材２７の作用力に抗して前進し、第３図
に示すようにそのゲート部４が金型のゲート受部５に当
接、嵌合して押圧される。乙の状態で、射出ユニット８
から供給されＪコ溶融樹脂がキュビティ９内に射出され
、スクリュー回転（図示していない）によって射出量が
計量される。そして上記射出量の計量が完了し、射出ユ
ニツト８が図中矢印Ｂ方向に後退すると、ポットランナ
２１はバネ部材２７の作用力によって矢印Ｂ方向へスラ
イドし、ゲート部４はゲート受部５から離間する。In the injection molding apparatus having such a configuration, to perform injection molding, first, when the injection unit 8 moves forward in the direction of arrow A, the hot runner 21 is moved by the pressing force of the nozzle portion 8a.
It moves forward against the acting force of the top spring member 27, and as shown in FIG. 3, the gate portion 4 comes into contact with the gate receiving portion 5 of the mold and is pressed. In the state B, the injection unit 8
The molten resin supplied from J is injected into the cuvette 9, and the amount of injection is measured by rotating a screw (not shown). When the measurement of the injection amount is completed and the injection unit 8 retreats in the direction of arrow B in the figure, the pot runner 21 slides in the direction of arrow B by the acting force of the spring member 27, and the gate part 4 is moved away from the gate receiving part 5. Separate.
この動作が射出成形の一サイクル操作毎に繰り返される
から、ホットランナの熱は容易に金型へ伝わって拡散す
ることは防止され、熱安定性の悪い樹脂でも同等支障な
く連続成形することが出来る。Since this operation is repeated for each cycle of injection molding, the heat from the hot runner is easily transmitted to the mold and prevented from spreading, making it possible to continuously mold even resins with poor thermal stability without any problems. .
なお、この実施例において、バネ部材２７はボルト２４
頭部とフランジ２５との間に装着されているが、これと
は異なり、収容室１３内の金型当接面（図中６ａで示す
）とフランジ２５との間に介装させて当該フランジ２５
を押圧させてもよい。Note that in this embodiment, the spring member 27 is connected to the bolt 24.
It is installed between the head and the flange 25, but unlike this, the flange is interposed between the mold contact surface (indicated by 6a in the figure) in the storage chamber 13 and the flange 25. 25
may be pressed.
乙の場合バネ部材にはバネ部材２７のような小径の圧縮
コイルバネのみならず、ホットランナ２１の外径よりも
大きな内径を有するコイルバネを金型当接面６ａとフラ
ンジ２５との間に当接させてもよい。更に射出成形機の
ノズル部８ａにシャットオフバルブを取付ければ、射出
完了時点でスクリュー回転による計量以前に射出ユニツ
ｌ−８を後退させることが出来るので、より一層金型へ
の熱の拡散を防止することが可能となる。又複数個のゲ
ートを必要とする場合も第４図に示したように同様に容
易に実施することが出来る。なお、第４図の参照番号中
筒２図及び第３図と同一の参照番号は同一の部材を示し
、参照番号のうち「ダッシュ」がついているものは付し
ていないものと同様の部材であることを示す。In the case of B, the spring member includes not only a small-diameter compression coil spring like the spring member 27 but also a coil spring having an inner diameter larger than the outer diameter of the hot runner 21 in contact between the mold contact surface 6a and the flange 25. You may let them. Furthermore, if a shutoff valve is attached to the nozzle part 8a of the injection molding machine, the injection unit 1-8 can be retreated at the time of completion of injection before metering by rotating the screw, which further reduces the diffusion of heat to the mold. It becomes possible to prevent this. Also, even if a plurality of gates are required, it can be implemented easily as shown in FIG. In addition, reference numbers that are the same as those in Figure 4 of the inner tube 2 and Figure 3 indicate the same parts, and reference numbers with a dash are the same parts as those without a dash. Show that something is true.
〈発明の効果〉
以上説明したように、本発明によれば射出成形装置のホ
ットランナを金型内で前進、後退するように構成したた
め、ホットランナから金型への熱の拡散が防止され、ホ
ットランナ内を流れる溶融樹脂を常に均一な状態に保つ
ことが出来、良好な射出成形を行い得るようになる。<Effects of the Invention> As explained above, according to the present invention, since the hot runner of the injection molding apparatus is configured to move forward and backward within the mold, the diffusion of heat from the hot runner to the mold is prevented. The molten resin flowing inside the hot runner can always be kept in a uniform state, making it possible to perform good injection molding.
第１図は射出成形装置の一従来例を示す図、第２図は本
発明の一実施例に係る射出成形機のホットランナ後退時
の状態を示す図、第３図は上記実施例におけるホットラ
ンナ前進時の状態を示す間第４図は複数個のゲートを設
けた場合の実施例を示す図である。
１・・・・１・−ピード、２・・・・・・本体、４・・
・・・ゲート部、５・・・・・ゲート受部、６・・・・
・・固定側金型、７・・・・可動側金型、８・・・・・
・射出ユニット、９・・・・・型キャビティ、１３・・
・・・収容部、２１．Ｈ・・・・・・ホットランナ、２
４・・・・・・ボルト、２５・・・・・・フランジ、２
７・・・・・・バネ部材（弾性部材）。
第１図
第３図
第４図
手続補正書（自船
特許庁長官 若 杉 和 夫 殿
１、事件の表示
昭和５９年 特 許 願 第２５６０８号２、発明の名
称
射出成形装置
３、補正をする者
事件との関係 特許出願人
オリオセイヒ成ｆ４七式会社
４、代 理 人
〒１０５ 東京都港区虎）門１丁目１番２０号虎ノ門実
業会館
（８１５１）弁理士 ン西 す１−一
電話（５９１）１５１６ （代表）（ほか２名）５、補
正の対象
（１）明細書の「特許請求の範囲」の項（２）明細書の
「発明の詳細な説明Ｊの項１、明細書の特許請求の範囲
を下記のように補正する。
特許請求の範囲
ｌ） 固定側及び可動側から構成され且つ固定側に収容
室を有する金型と、軸方向先端にゲート部、後端にノズ
ル受部を形成し、内部にノズル受部からゲート部へと延
びる樹脂通路を有すると共に、上記収容室内に設置され
るホットランナと、ホットランナのノズル受部に当接し
て熱溶融樹脂を射出する射出ユニットとから成る射出成
形装置において、
収容室内でホットランナを軸方向へ摺動可能に配設する
一方、金型の樹脂出口部分にはゲート受部を形成し、ホ
ットランナを弾性部材により金型に対して射出位置から
後退する方向へ常時弾性支持し、射出ユニッｌ〜の直進
によるノズレ部の衝合圧力によってホットランナが弾性
部才に抗して前進し、当該ホットランナのゲート事が金
型のゲート受部に嵌合するようにしたここを特徴とする
射出成形装置。
２）ホットランナは、当該ホットランナの後端部分に軸
に対して直角方向に延びるフランジを設け、このフラン
ジ面にホットランナの後退方向へ作用するバネ部材を係
合させて弾性支持されることを特徴とする特許請求の範
囲第１項記載の射出成形装置。」
２、明細書第９頁第２行目「２１もたま」を「２１もま
た」と訂正する。FIG. 1 is a diagram showing a conventional example of an injection molding apparatus, FIG. 2 is a diagram showing a state when the hot runner of an injection molding machine according to an embodiment of the present invention is retracted, and FIG. 3 is a diagram showing a hot runner in the above embodiment. FIG. 4, which shows the state when the runner moves forward, is a diagram showing an embodiment in which a plurality of gates are provided. 1...1...Peed, 2...Body, 4...
...Gate part, 5...Gate receiving part, 6...
・・Fixed side mold, 7・・・Movable side mold, 8・・・・
・Injection unit, 9...Mold cavity, 13...
...accommodation section, 21. H・・・Hot runner, 2
4... Bolt, 25... Flange, 2
7... Spring member (elastic member). Figure 1 Figure 3 Figure 4 Procedural amendment (Mr. Kazuo Wakasugi, Commissioner of the Ship's Patent Office1, Indication of the case, 1982 Patent Application No. 256082, Name of the invention Injection molding device 3, Make amendments) Patent applicant: Orio Seihi Seifu F4 Seven Type Company 4, Agent: Toranomon Jitsugyo Kaikan (8151), 1-1-20 Toranomon, Minato-ku, Tokyo, 105, Japan Patent attorney Nnishi Su 1-1 Telephone: 591) 1516 (Representative) (and 2 others) 5. Subject of amendment (1) Section ``Claims'' of the specification (2) Section 1 of ``Detailed Description of the Invention J'' of the specification The scope of the claims is amended as follows: Claims 1) A mold consisting of a fixed side and a movable side and having a storage chamber on the fixed side, a gate part at the axial tip, and a nozzle receiver at the rear end. a hot runner that is installed in the storage chamber, and an injection device that injects hot molten resin by contacting the nozzle receiving portion of the hot runner; In an injection molding apparatus consisting of a unit, a hot runner is arranged to be slidable in the axial direction within a housing chamber, and a gate receiving part is formed at the resin outlet part of the mold, and the hot runner is attached to the mold by an elastic member. The hot runner is always elastically supported in the direction of retreating from the injection position, and the hot runner moves forward against the elastic force due to the collision pressure of the nozzle part caused by the straight movement of the injection unit, and the gate of the hot runner is An injection molding apparatus characterized by this, which fits into the gate receiving part of the mold. 2) The hot runner is provided with a flange extending in a direction perpendicular to the axis at the rear end portion of the hot runner, and the flange surface 2. The injection molding apparatus according to claim 1, wherein the injection molding apparatus is elastically supported by engaging a spring member that acts in the backward direction of the hot runner." 2. Specification, page 9, line 2. Correct ``21 mo tama'' to ``21 mo ta.''
Claims (1)
を有する金型と、軸方向先端にゲート部、後端にノズル
受部を形成し、内部にノズル受部からゲート部へと延び
る樹脂通路を有すると共に、上記収容室内に設置される
ホットランナと、ホットランナのノズル受部に当接して
熱溶融樹脂を射出する射出ユニットとから成る射出成形
装置において、 収容室内でホットランナを軸方向へ摺動可能に配設する
一方、金型の樹脂出口部分にはゲート受部を形成し、ホ
ットランナを弾性部材により金型に対して射出位置から
後退する方向へ常時弾性支持し、射出ユニットの前途に
よるノズル部の衝合圧力によってホットランナが弾性部
材に抗して前進し、当該ホットランナのゲート部が金型
のゲート受部に嶽合するようにしたことを特徴とする射
出成形装置。 ２）ホットランナは、当該ホットランナの後端部分に軸
に対して直角方向に延びるフランジを設け、このフラン
ジ面にホットランナの後退方向へ作用するバネ部材を係
合させて弾性支持されることを特徴とする特許請求の範
囲第１項記載の射出成形装置。[Scope of Claims] l) A mold consisting of a fixed side and a movable side and having a storage chamber on the fixed side, a gate portion at the axial tip, a nozzle receiving portion at the rear end, and a nozzle receiving portion inside. An injection molding apparatus comprising a hot runner having a resin passage extending from the housing chamber to the gate portion, and an injection unit that injects hot molten resin by contacting a nozzle receiving portion of the hot runner. While the hot runner is arranged to be able to slide in the axial direction indoors, a gate receiving part is formed at the resin outlet part of the mold, and the hot runner is moved in the direction of retreat from the injection position with respect to the mold by an elastic member. The hot runner is always elastically supported, and the hot runner moves forward against the elastic member due to the collision pressure of the nozzle part due to the front part of the injection unit, so that the gate part of the hot runner fits into the gate receiving part of the mold. An injection molding device featuring: 2) The hot runner is provided with a flange extending perpendicularly to the axis at the rear end portion of the hot runner, and is elastically supported by engaging a spring member acting in the backward direction of the hot runner with the flange surface. An injection molding apparatus according to claim 1, characterized in that:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2560884A JPS60168619A (en) | 1984-02-14 | 1984-02-14 | Injection molding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2560884A JPS60168619A (en) | 1984-02-14 | 1984-02-14 | Injection molding device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS60168619A true JPS60168619A (en) | 1985-09-02 |
Family
ID=12170608
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2560884A Pending JPS60168619A (en) | 1984-02-14 | 1984-02-14 | Injection molding device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60168619A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63124112U (en) * | 1987-02-04 | 1988-08-12 | ||
| EP0344381A2 (en) * | 1988-06-01 | 1989-12-06 | Sankyo Engineering Co. Ltd. | Nozzle touch sprue bushing device |
| US7416402B2 (en) | 2003-03-31 | 2008-08-26 | Mold-Masters (2007) Limited | Sprue bushing anti-drool device |
| JP2013202823A (en) * | 2012-03-27 | 2013-10-07 | Daihatsu Motor Co Ltd | Hot runner unit for injection molding machine |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5472262A (en) * | 1977-11-21 | 1979-06-09 | Asahi Chem Ind Co Ltd | Hot runner mold |
-
1984
- 1984-02-14 JP JP2560884A patent/JPS60168619A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5472262A (en) * | 1977-11-21 | 1979-06-09 | Asahi Chem Ind Co Ltd | Hot runner mold |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63124112U (en) * | 1987-02-04 | 1988-08-12 | ||
| JPH0529854Y2 (en) * | 1987-02-04 | 1993-07-30 | ||
| EP0344381A2 (en) * | 1988-06-01 | 1989-12-06 | Sankyo Engineering Co. Ltd. | Nozzle touch sprue bushing device |
| US7416402B2 (en) | 2003-03-31 | 2008-08-26 | Mold-Masters (2007) Limited | Sprue bushing anti-drool device |
| JP2013202823A (en) * | 2012-03-27 | 2013-10-07 | Daihatsu Motor Co Ltd | Hot runner unit for injection molding machine |
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